--- /dev/null
+{
+ "name": "chart.js",
+ "description": "Simple HTML5 charts using the canvas element.",
+ "homepage": "https://www.chartjs.org",
+ "license": "MIT",
+ "version": "2.8.0",
+ "main": "./dist/Chart.js",
+ "ignore": [
+ ".github",
+ ".codeclimate.yml",
+ ".gitignore",
+ ".npmignore",
+ ".travis.yml",
+ "scripts"
+ ]
+}
\ No newline at end of file
--- /dev/null
+/*!
+ * Chart.js v2.8.0
+ * https://www.chartjs.org
+ * (c) 2019 Chart.js Contributors
+ * Released under the MIT License
+ */
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+typeof define === 'function' && define.amd ? define(factory) :
+(global.Chart = factory());
+}(this, (function () { 'use strict';
+
+/* MIT license */
+
+var conversions = {
+ rgb2hsl: rgb2hsl,
+ rgb2hsv: rgb2hsv,
+ rgb2hwb: rgb2hwb,
+ rgb2cmyk: rgb2cmyk,
+ rgb2keyword: rgb2keyword,
+ rgb2xyz: rgb2xyz,
+ rgb2lab: rgb2lab,
+ rgb2lch: rgb2lch,
+
+ hsl2rgb: hsl2rgb,
+ hsl2hsv: hsl2hsv,
+ hsl2hwb: hsl2hwb,
+ hsl2cmyk: hsl2cmyk,
+ hsl2keyword: hsl2keyword,
+
+ hsv2rgb: hsv2rgb,
+ hsv2hsl: hsv2hsl,
+ hsv2hwb: hsv2hwb,
+ hsv2cmyk: hsv2cmyk,
+ hsv2keyword: hsv2keyword,
+
+ hwb2rgb: hwb2rgb,
+ hwb2hsl: hwb2hsl,
+ hwb2hsv: hwb2hsv,
+ hwb2cmyk: hwb2cmyk,
+ hwb2keyword: hwb2keyword,
+
+ cmyk2rgb: cmyk2rgb,
+ cmyk2hsl: cmyk2hsl,
+ cmyk2hsv: cmyk2hsv,
+ cmyk2hwb: cmyk2hwb,
+ cmyk2keyword: cmyk2keyword,
+
+ keyword2rgb: keyword2rgb,
+ keyword2hsl: keyword2hsl,
+ keyword2hsv: keyword2hsv,
+ keyword2hwb: keyword2hwb,
+ keyword2cmyk: keyword2cmyk,
+ keyword2lab: keyword2lab,
+ keyword2xyz: keyword2xyz,
+
+ xyz2rgb: xyz2rgb,
+ xyz2lab: xyz2lab,
+ xyz2lch: xyz2lch,
+
+ lab2xyz: lab2xyz,
+ lab2rgb: lab2rgb,
+ lab2lch: lab2lch,
+
+ lch2lab: lch2lab,
+ lch2xyz: lch2xyz,
+ lch2rgb: lch2rgb
+};
+
+
+function rgb2hsl(rgb) {
+ var r = rgb[0]/255,
+ g = rgb[1]/255,
+ b = rgb[2]/255,
+ min = Math.min(r, g, b),
+ max = Math.max(r, g, b),
+ delta = max - min,
+ h, s, l;
+
+ if (max == min)
+ h = 0;
+ else if (r == max)
+ h = (g - b) / delta;
+ else if (g == max)
+ h = 2 + (b - r) / delta;
+ else if (b == max)
+ h = 4 + (r - g)/ delta;
+
+ h = Math.min(h * 60, 360);
+
+ if (h < 0)
+ h += 360;
+
+ l = (min + max) / 2;
+
+ if (max == min)
+ s = 0;
+ else if (l <= 0.5)
+ s = delta / (max + min);
+ else
+ s = delta / (2 - max - min);
+
+ return [h, s * 100, l * 100];
+}
+
+function rgb2hsv(rgb) {
+ var r = rgb[0],
+ g = rgb[1],
+ b = rgb[2],
+ min = Math.min(r, g, b),
+ max = Math.max(r, g, b),
+ delta = max - min,
+ h, s, v;
+
+ if (max == 0)
+ s = 0;
+ else
+ s = (delta/max * 1000)/10;
+
+ if (max == min)
+ h = 0;
+ else if (r == max)
+ h = (g - b) / delta;
+ else if (g == max)
+ h = 2 + (b - r) / delta;
+ else if (b == max)
+ h = 4 + (r - g) / delta;
+
+ h = Math.min(h * 60, 360);
+
+ if (h < 0)
+ h += 360;
+
+ v = ((max / 255) * 1000) / 10;
+
+ return [h, s, v];
+}
+
+function rgb2hwb(rgb) {
+ var r = rgb[0],
+ g = rgb[1],
+ b = rgb[2],
+ h = rgb2hsl(rgb)[0],
+ w = 1/255 * Math.min(r, Math.min(g, b)),
+ b = 1 - 1/255 * Math.max(r, Math.max(g, b));
+
+ return [h, w * 100, b * 100];
+}
+
+function rgb2cmyk(rgb) {
+ var r = rgb[0] / 255,
+ g = rgb[1] / 255,
+ b = rgb[2] / 255,
+ c, m, y, k;
+
+ k = Math.min(1 - r, 1 - g, 1 - b);
+ c = (1 - r - k) / (1 - k) || 0;
+ m = (1 - g - k) / (1 - k) || 0;
+ y = (1 - b - k) / (1 - k) || 0;
+ return [c * 100, m * 100, y * 100, k * 100];
+}
+
+function rgb2keyword(rgb) {
+ return reverseKeywords[JSON.stringify(rgb)];
+}
+
+function rgb2xyz(rgb) {
+ var r = rgb[0] / 255,
+ g = rgb[1] / 255,
+ b = rgb[2] / 255;
+
+ // assume sRGB
+ r = r > 0.04045 ? Math.pow(((r + 0.055) / 1.055), 2.4) : (r / 12.92);
+ g = g > 0.04045 ? Math.pow(((g + 0.055) / 1.055), 2.4) : (g / 12.92);
+ b = b > 0.04045 ? Math.pow(((b + 0.055) / 1.055), 2.4) : (b / 12.92);
+
+ var x = (r * 0.4124) + (g * 0.3576) + (b * 0.1805);
+ var y = (r * 0.2126) + (g * 0.7152) + (b * 0.0722);
+ var z = (r * 0.0193) + (g * 0.1192) + (b * 0.9505);
+
+ return [x * 100, y *100, z * 100];
+}
+
+function rgb2lab(rgb) {
+ var xyz = rgb2xyz(rgb),
+ x = xyz[0],
+ y = xyz[1],
+ z = xyz[2],
+ l, a, b;
+
+ x /= 95.047;
+ y /= 100;
+ z /= 108.883;
+
+ x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
+ y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
+ z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
+
+ l = (116 * y) - 16;
+ a = 500 * (x - y);
+ b = 200 * (y - z);
+
+ return [l, a, b];
+}
+
+function rgb2lch(args) {
+ return lab2lch(rgb2lab(args));
+}
+
+function hsl2rgb(hsl) {
+ var h = hsl[0] / 360,
+ s = hsl[1] / 100,
+ l = hsl[2] / 100,
+ t1, t2, t3, rgb, val;
+
+ if (s == 0) {
+ val = l * 255;
+ return [val, val, val];
+ }
+
+ if (l < 0.5)
+ t2 = l * (1 + s);
+ else
+ t2 = l + s - l * s;
+ t1 = 2 * l - t2;
+
+ rgb = [0, 0, 0];
+ for (var i = 0; i < 3; i++) {
+ t3 = h + 1 / 3 * - (i - 1);
+ t3 < 0 && t3++;
+ t3 > 1 && t3--;
+
+ if (6 * t3 < 1)
+ val = t1 + (t2 - t1) * 6 * t3;
+ else if (2 * t3 < 1)
+ val = t2;
+ else if (3 * t3 < 2)
+ val = t1 + (t2 - t1) * (2 / 3 - t3) * 6;
+ else
+ val = t1;
+
+ rgb[i] = val * 255;
+ }
+
+ return rgb;
+}
+
+function hsl2hsv(hsl) {
+ var h = hsl[0],
+ s = hsl[1] / 100,
+ l = hsl[2] / 100,
+ sv, v;
+
+ if(l === 0) {
+ // no need to do calc on black
+ // also avoids divide by 0 error
+ return [0, 0, 0];
+ }
+
+ l *= 2;
+ s *= (l <= 1) ? l : 2 - l;
+ v = (l + s) / 2;
+ sv = (2 * s) / (l + s);
+ return [h, sv * 100, v * 100];
+}
+
+function hsl2hwb(args) {
+ return rgb2hwb(hsl2rgb(args));
+}
+
+function hsl2cmyk(args) {
+ return rgb2cmyk(hsl2rgb(args));
+}
+
+function hsl2keyword(args) {
+ return rgb2keyword(hsl2rgb(args));
+}
+
+
+function hsv2rgb(hsv) {
+ var h = hsv[0] / 60,
+ s = hsv[1] / 100,
+ v = hsv[2] / 100,
+ hi = Math.floor(h) % 6;
+
+ var f = h - Math.floor(h),
+ p = 255 * v * (1 - s),
+ q = 255 * v * (1 - (s * f)),
+ t = 255 * v * (1 - (s * (1 - f))),
+ v = 255 * v;
+
+ switch(hi) {
+ case 0:
+ return [v, t, p];
+ case 1:
+ return [q, v, p];
+ case 2:
+ return [p, v, t];
+ case 3:
+ return [p, q, v];
+ case 4:
+ return [t, p, v];
+ case 5:
+ return [v, p, q];
+ }
+}
+
+function hsv2hsl(hsv) {
+ var h = hsv[0],
+ s = hsv[1] / 100,
+ v = hsv[2] / 100,
+ sl, l;
+
+ l = (2 - s) * v;
+ sl = s * v;
+ sl /= (l <= 1) ? l : 2 - l;
+ sl = sl || 0;
+ l /= 2;
+ return [h, sl * 100, l * 100];
+}
+
+function hsv2hwb(args) {
+ return rgb2hwb(hsv2rgb(args))
+}
+
+function hsv2cmyk(args) {
+ return rgb2cmyk(hsv2rgb(args));
+}
+
+function hsv2keyword(args) {
+ return rgb2keyword(hsv2rgb(args));
+}
+
+// http://dev.w3.org/csswg/css-color/#hwb-to-rgb
+function hwb2rgb(hwb) {
+ var h = hwb[0] / 360,
+ wh = hwb[1] / 100,
+ bl = hwb[2] / 100,
+ ratio = wh + bl,
+ i, v, f, n;
+
+ // wh + bl cant be > 1
+ if (ratio > 1) {
+ wh /= ratio;
+ bl /= ratio;
+ }
+
+ i = Math.floor(6 * h);
+ v = 1 - bl;
+ f = 6 * h - i;
+ if ((i & 0x01) != 0) {
+ f = 1 - f;
+ }
+ n = wh + f * (v - wh); // linear interpolation
+
+ switch (i) {
+ default:
+ case 6:
+ case 0: r = v; g = n; b = wh; break;
+ case 1: r = n; g = v; b = wh; break;
+ case 2: r = wh; g = v; b = n; break;
+ case 3: r = wh; g = n; b = v; break;
+ case 4: r = n; g = wh; b = v; break;
+ case 5: r = v; g = wh; b = n; break;
+ }
+
+ return [r * 255, g * 255, b * 255];
+}
+
+function hwb2hsl(args) {
+ return rgb2hsl(hwb2rgb(args));
+}
+
+function hwb2hsv(args) {
+ return rgb2hsv(hwb2rgb(args));
+}
+
+function hwb2cmyk(args) {
+ return rgb2cmyk(hwb2rgb(args));
+}
+
+function hwb2keyword(args) {
+ return rgb2keyword(hwb2rgb(args));
+}
+
+function cmyk2rgb(cmyk) {
+ var c = cmyk[0] / 100,
+ m = cmyk[1] / 100,
+ y = cmyk[2] / 100,
+ k = cmyk[3] / 100,
+ r, g, b;
+
+ r = 1 - Math.min(1, c * (1 - k) + k);
+ g = 1 - Math.min(1, m * (1 - k) + k);
+ b = 1 - Math.min(1, y * (1 - k) + k);
+ return [r * 255, g * 255, b * 255];
+}
+
+function cmyk2hsl(args) {
+ return rgb2hsl(cmyk2rgb(args));
+}
+
+function cmyk2hsv(args) {
+ return rgb2hsv(cmyk2rgb(args));
+}
+
+function cmyk2hwb(args) {
+ return rgb2hwb(cmyk2rgb(args));
+}
+
+function cmyk2keyword(args) {
+ return rgb2keyword(cmyk2rgb(args));
+}
+
+
+function xyz2rgb(xyz) {
+ var x = xyz[0] / 100,
+ y = xyz[1] / 100,
+ z = xyz[2] / 100,
+ r, g, b;
+
+ r = (x * 3.2406) + (y * -1.5372) + (z * -0.4986);
+ g = (x * -0.9689) + (y * 1.8758) + (z * 0.0415);
+ b = (x * 0.0557) + (y * -0.2040) + (z * 1.0570);
+
+ // assume sRGB
+ r = r > 0.0031308 ? ((1.055 * Math.pow(r, 1.0 / 2.4)) - 0.055)
+ : r = (r * 12.92);
+
+ g = g > 0.0031308 ? ((1.055 * Math.pow(g, 1.0 / 2.4)) - 0.055)
+ : g = (g * 12.92);
+
+ b = b > 0.0031308 ? ((1.055 * Math.pow(b, 1.0 / 2.4)) - 0.055)
+ : b = (b * 12.92);
+
+ r = Math.min(Math.max(0, r), 1);
+ g = Math.min(Math.max(0, g), 1);
+ b = Math.min(Math.max(0, b), 1);
+
+ return [r * 255, g * 255, b * 255];
+}
+
+function xyz2lab(xyz) {
+ var x = xyz[0],
+ y = xyz[1],
+ z = xyz[2],
+ l, a, b;
+
+ x /= 95.047;
+ y /= 100;
+ z /= 108.883;
+
+ x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
+ y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
+ z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
+
+ l = (116 * y) - 16;
+ a = 500 * (x - y);
+ b = 200 * (y - z);
+
+ return [l, a, b];
+}
+
+function xyz2lch(args) {
+ return lab2lch(xyz2lab(args));
+}
+
+function lab2xyz(lab) {
+ var l = lab[0],
+ a = lab[1],
+ b = lab[2],
+ x, y, z, y2;
+
+ if (l <= 8) {
+ y = (l * 100) / 903.3;
+ y2 = (7.787 * (y / 100)) + (16 / 116);
+ } else {
+ y = 100 * Math.pow((l + 16) / 116, 3);
+ y2 = Math.pow(y / 100, 1/3);
+ }
+
+ x = x / 95.047 <= 0.008856 ? x = (95.047 * ((a / 500) + y2 - (16 / 116))) / 7.787 : 95.047 * Math.pow((a / 500) + y2, 3);
+
+ z = z / 108.883 <= 0.008859 ? z = (108.883 * (y2 - (b / 200) - (16 / 116))) / 7.787 : 108.883 * Math.pow(y2 - (b / 200), 3);
+
+ return [x, y, z];
+}
+
+function lab2lch(lab) {
+ var l = lab[0],
+ a = lab[1],
+ b = lab[2],
+ hr, h, c;
+
+ hr = Math.atan2(b, a);
+ h = hr * 360 / 2 / Math.PI;
+ if (h < 0) {
+ h += 360;
+ }
+ c = Math.sqrt(a * a + b * b);
+ return [l, c, h];
+}
+
+function lab2rgb(args) {
+ return xyz2rgb(lab2xyz(args));
+}
+
+function lch2lab(lch) {
+ var l = lch[0],
+ c = lch[1],
+ h = lch[2],
+ a, b, hr;
+
+ hr = h / 360 * 2 * Math.PI;
+ a = c * Math.cos(hr);
+ b = c * Math.sin(hr);
+ return [l, a, b];
+}
+
+function lch2xyz(args) {
+ return lab2xyz(lch2lab(args));
+}
+
+function lch2rgb(args) {
+ return lab2rgb(lch2lab(args));
+}
+
+function keyword2rgb(keyword) {
+ return cssKeywords[keyword];
+}
+
+function keyword2hsl(args) {
+ return rgb2hsl(keyword2rgb(args));
+}
+
+function keyword2hsv(args) {
+ return rgb2hsv(keyword2rgb(args));
+}
+
+function keyword2hwb(args) {
+ return rgb2hwb(keyword2rgb(args));
+}
+
+function keyword2cmyk(args) {
+ return rgb2cmyk(keyword2rgb(args));
+}
+
+function keyword2lab(args) {
+ return rgb2lab(keyword2rgb(args));
+}
+
+function keyword2xyz(args) {
+ return rgb2xyz(keyword2rgb(args));
+}
+
+var cssKeywords = {
+ aliceblue: [240,248,255],
+ antiquewhite: [250,235,215],
+ aqua: [0,255,255],
+ aquamarine: [127,255,212],
+ azure: [240,255,255],
+ beige: [245,245,220],
+ bisque: [255,228,196],
+ black: [0,0,0],
+ blanchedalmond: [255,235,205],
+ blue: [0,0,255],
+ blueviolet: [138,43,226],
+ brown: [165,42,42],
+ burlywood: [222,184,135],
+ cadetblue: [95,158,160],
+ chartreuse: [127,255,0],
+ chocolate: [210,105,30],
+ coral: [255,127,80],
+ cornflowerblue: [100,149,237],
+ cornsilk: [255,248,220],
+ crimson: [220,20,60],
+ cyan: [0,255,255],
+ darkblue: [0,0,139],
+ darkcyan: [0,139,139],
+ darkgoldenrod: [184,134,11],
+ darkgray: [169,169,169],
+ darkgreen: [0,100,0],
+ darkgrey: [169,169,169],
+ darkkhaki: [189,183,107],
+ darkmagenta: [139,0,139],
+ darkolivegreen: [85,107,47],
+ darkorange: [255,140,0],
+ darkorchid: [153,50,204],
+ darkred: [139,0,0],
+ darksalmon: [233,150,122],
+ darkseagreen: [143,188,143],
+ darkslateblue: [72,61,139],
+ darkslategray: [47,79,79],
+ darkslategrey: [47,79,79],
+ darkturquoise: [0,206,209],
+ darkviolet: [148,0,211],
+ deeppink: [255,20,147],
+ deepskyblue: [0,191,255],
+ dimgray: [105,105,105],
+ dimgrey: [105,105,105],
+ dodgerblue: [30,144,255],
+ firebrick: [178,34,34],
+ floralwhite: [255,250,240],
+ forestgreen: [34,139,34],
+ fuchsia: [255,0,255],
+ gainsboro: [220,220,220],
+ ghostwhite: [248,248,255],
+ gold: [255,215,0],
+ goldenrod: [218,165,32],
+ gray: [128,128,128],
+ green: [0,128,0],
+ greenyellow: [173,255,47],
+ grey: [128,128,128],
+ honeydew: [240,255,240],
+ hotpink: [255,105,180],
+ indianred: [205,92,92],
+ indigo: [75,0,130],
+ ivory: [255,255,240],
+ khaki: [240,230,140],
+ lavender: [230,230,250],
+ lavenderblush: [255,240,245],
+ lawngreen: [124,252,0],
+ lemonchiffon: [255,250,205],
+ lightblue: [173,216,230],
+ lightcoral: [240,128,128],
+ lightcyan: [224,255,255],
+ lightgoldenrodyellow: [250,250,210],
+ lightgray: [211,211,211],
+ lightgreen: [144,238,144],
+ lightgrey: [211,211,211],
+ lightpink: [255,182,193],
+ lightsalmon: [255,160,122],
+ lightseagreen: [32,178,170],
+ lightskyblue: [135,206,250],
+ lightslategray: [119,136,153],
+ lightslategrey: [119,136,153],
+ lightsteelblue: [176,196,222],
+ lightyellow: [255,255,224],
+ lime: [0,255,0],
+ limegreen: [50,205,50],
+ linen: [250,240,230],
+ magenta: [255,0,255],
+ maroon: [128,0,0],
+ mediumaquamarine: [102,205,170],
+ mediumblue: [0,0,205],
+ mediumorchid: [186,85,211],
+ mediumpurple: [147,112,219],
+ mediumseagreen: [60,179,113],
+ mediumslateblue: [123,104,238],
+ mediumspringgreen: [0,250,154],
+ mediumturquoise: [72,209,204],
+ mediumvioletred: [199,21,133],
+ midnightblue: [25,25,112],
+ mintcream: [245,255,250],
+ mistyrose: [255,228,225],
+ moccasin: [255,228,181],
+ navajowhite: [255,222,173],
+ navy: [0,0,128],
+ oldlace: [253,245,230],
+ olive: [128,128,0],
+ olivedrab: [107,142,35],
+ orange: [255,165,0],
+ orangered: [255,69,0],
+ orchid: [218,112,214],
+ palegoldenrod: [238,232,170],
+ palegreen: [152,251,152],
+ paleturquoise: [175,238,238],
+ palevioletred: [219,112,147],
+ papayawhip: [255,239,213],
+ peachpuff: [255,218,185],
+ peru: [205,133,63],
+ pink: [255,192,203],
+ plum: [221,160,221],
+ powderblue: [176,224,230],
+ purple: [128,0,128],
+ rebeccapurple: [102, 51, 153],
+ red: [255,0,0],
+ rosybrown: [188,143,143],
+ royalblue: [65,105,225],
+ saddlebrown: [139,69,19],
+ salmon: [250,128,114],
+ sandybrown: [244,164,96],
+ seagreen: [46,139,87],
+ seashell: [255,245,238],
+ sienna: [160,82,45],
+ silver: [192,192,192],
+ skyblue: [135,206,235],
+ slateblue: [106,90,205],
+ slategray: [112,128,144],
+ slategrey: [112,128,144],
+ snow: [255,250,250],
+ springgreen: [0,255,127],
+ steelblue: [70,130,180],
+ tan: [210,180,140],
+ teal: [0,128,128],
+ thistle: [216,191,216],
+ tomato: [255,99,71],
+ turquoise: [64,224,208],
+ violet: [238,130,238],
+ wheat: [245,222,179],
+ white: [255,255,255],
+ whitesmoke: [245,245,245],
+ yellow: [255,255,0],
+ yellowgreen: [154,205,50]
+};
+
+var reverseKeywords = {};
+for (var key in cssKeywords) {
+ reverseKeywords[JSON.stringify(cssKeywords[key])] = key;
+}
+
+var convert = function() {
+ return new Converter();
+};
+
+for (var func in conversions) {
+ // export Raw versions
+ convert[func + "Raw"] = (function(func) {
+ // accept array or plain args
+ return function(arg) {
+ if (typeof arg == "number")
+ arg = Array.prototype.slice.call(arguments);
+ return conversions[func](arg);
+ }
+ })(func);
+
+ var pair = /(\w+)2(\w+)/.exec(func),
+ from = pair[1],
+ to = pair[2];
+
+ // export rgb2hsl and ["rgb"]["hsl"]
+ convert[from] = convert[from] || {};
+
+ convert[from][to] = convert[func] = (function(func) {
+ return function(arg) {
+ if (typeof arg == "number")
+ arg = Array.prototype.slice.call(arguments);
+
+ var val = conversions[func](arg);
+ if (typeof val == "string" || val === undefined)
+ return val; // keyword
+
+ for (var i = 0; i < val.length; i++)
+ val[i] = Math.round(val[i]);
+ return val;
+ }
+ })(func);
+}
+
+
+/* Converter does lazy conversion and caching */
+var Converter = function() {
+ this.convs = {};
+};
+
+/* Either get the values for a space or
+ set the values for a space, depending on args */
+Converter.prototype.routeSpace = function(space, args) {
+ var values = args[0];
+ if (values === undefined) {
+ // color.rgb()
+ return this.getValues(space);
+ }
+ // color.rgb(10, 10, 10)
+ if (typeof values == "number") {
+ values = Array.prototype.slice.call(args);
+ }
+
+ return this.setValues(space, values);
+};
+
+/* Set the values for a space, invalidating cache */
+Converter.prototype.setValues = function(space, values) {
+ this.space = space;
+ this.convs = {};
+ this.convs[space] = values;
+ return this;
+};
+
+/* Get the values for a space. If there's already
+ a conversion for the space, fetch it, otherwise
+ compute it */
+Converter.prototype.getValues = function(space) {
+ var vals = this.convs[space];
+ if (!vals) {
+ var fspace = this.space,
+ from = this.convs[fspace];
+ vals = convert[fspace][space](from);
+
+ this.convs[space] = vals;
+ }
+ return vals;
+};
+
+["rgb", "hsl", "hsv", "cmyk", "keyword"].forEach(function(space) {
+ Converter.prototype[space] = function(vals) {
+ return this.routeSpace(space, arguments);
+ };
+});
+
+var colorConvert = convert;
+
+var colorName = {\r
+ "aliceblue": [240, 248, 255],\r
+ "antiquewhite": [250, 235, 215],\r
+ "aqua": [0, 255, 255],\r
+ "aquamarine": [127, 255, 212],\r
+ "azure": [240, 255, 255],\r
+ "beige": [245, 245, 220],\r
+ "bisque": [255, 228, 196],\r
+ "black": [0, 0, 0],\r
+ "blanchedalmond": [255, 235, 205],\r
+ "blue": [0, 0, 255],\r
+ "blueviolet": [138, 43, 226],\r
+ "brown": [165, 42, 42],\r
+ "burlywood": [222, 184, 135],\r
+ "cadetblue": [95, 158, 160],\r
+ "chartreuse": [127, 255, 0],\r
+ "chocolate": [210, 105, 30],\r
+ "coral": [255, 127, 80],\r
+ "cornflowerblue": [100, 149, 237],\r
+ "cornsilk": [255, 248, 220],\r
+ "crimson": [220, 20, 60],\r
+ "cyan": [0, 255, 255],\r
+ "darkblue": [0, 0, 139],\r
+ "darkcyan": [0, 139, 139],\r
+ "darkgoldenrod": [184, 134, 11],\r
+ "darkgray": [169, 169, 169],\r
+ "darkgreen": [0, 100, 0],\r
+ "darkgrey": [169, 169, 169],\r
+ "darkkhaki": [189, 183, 107],\r
+ "darkmagenta": [139, 0, 139],\r
+ "darkolivegreen": [85, 107, 47],\r
+ "darkorange": [255, 140, 0],\r
+ "darkorchid": [153, 50, 204],\r
+ "darkred": [139, 0, 0],\r
+ "darksalmon": [233, 150, 122],\r
+ "darkseagreen": [143, 188, 143],\r
+ "darkslateblue": [72, 61, 139],\r
+ "darkslategray": [47, 79, 79],\r
+ "darkslategrey": [47, 79, 79],\r
+ "darkturquoise": [0, 206, 209],\r
+ "darkviolet": [148, 0, 211],\r
+ "deeppink": [255, 20, 147],\r
+ "deepskyblue": [0, 191, 255],\r
+ "dimgray": [105, 105, 105],\r
+ "dimgrey": [105, 105, 105],\r
+ "dodgerblue": [30, 144, 255],\r
+ "firebrick": [178, 34, 34],\r
+ "floralwhite": [255, 250, 240],\r
+ "forestgreen": [34, 139, 34],\r
+ "fuchsia": [255, 0, 255],\r
+ "gainsboro": [220, 220, 220],\r
+ "ghostwhite": [248, 248, 255],\r
+ "gold": [255, 215, 0],\r
+ "goldenrod": [218, 165, 32],\r
+ "gray": [128, 128, 128],\r
+ "green": [0, 128, 0],\r
+ "greenyellow": [173, 255, 47],\r
+ "grey": [128, 128, 128],\r
+ "honeydew": [240, 255, 240],\r
+ "hotpink": [255, 105, 180],\r
+ "indianred": [205, 92, 92],\r
+ "indigo": [75, 0, 130],\r
+ "ivory": [255, 255, 240],\r
+ "khaki": [240, 230, 140],\r
+ "lavender": [230, 230, 250],\r
+ "lavenderblush": [255, 240, 245],\r
+ "lawngreen": [124, 252, 0],\r
+ "lemonchiffon": [255, 250, 205],\r
+ "lightblue": [173, 216, 230],\r
+ "lightcoral": [240, 128, 128],\r
+ "lightcyan": [224, 255, 255],\r
+ "lightgoldenrodyellow": [250, 250, 210],\r
+ "lightgray": [211, 211, 211],\r
+ "lightgreen": [144, 238, 144],\r
+ "lightgrey": [211, 211, 211],\r
+ "lightpink": [255, 182, 193],\r
+ "lightsalmon": [255, 160, 122],\r
+ "lightseagreen": [32, 178, 170],\r
+ "lightskyblue": [135, 206, 250],\r
+ "lightslategray": [119, 136, 153],\r
+ "lightslategrey": [119, 136, 153],\r
+ "lightsteelblue": [176, 196, 222],\r
+ "lightyellow": [255, 255, 224],\r
+ "lime": [0, 255, 0],\r
+ "limegreen": [50, 205, 50],\r
+ "linen": [250, 240, 230],\r
+ "magenta": [255, 0, 255],\r
+ "maroon": [128, 0, 0],\r
+ "mediumaquamarine": [102, 205, 170],\r
+ "mediumblue": [0, 0, 205],\r
+ "mediumorchid": [186, 85, 211],\r
+ "mediumpurple": [147, 112, 219],\r
+ "mediumseagreen": [60, 179, 113],\r
+ "mediumslateblue": [123, 104, 238],\r
+ "mediumspringgreen": [0, 250, 154],\r
+ "mediumturquoise": [72, 209, 204],\r
+ "mediumvioletred": [199, 21, 133],\r
+ "midnightblue": [25, 25, 112],\r
+ "mintcream": [245, 255, 250],\r
+ "mistyrose": [255, 228, 225],\r
+ "moccasin": [255, 228, 181],\r
+ "navajowhite": [255, 222, 173],\r
+ "navy": [0, 0, 128],\r
+ "oldlace": [253, 245, 230],\r
+ "olive": [128, 128, 0],\r
+ "olivedrab": [107, 142, 35],\r
+ "orange": [255, 165, 0],\r
+ "orangered": [255, 69, 0],\r
+ "orchid": [218, 112, 214],\r
+ "palegoldenrod": [238, 232, 170],\r
+ "palegreen": [152, 251, 152],\r
+ "paleturquoise": [175, 238, 238],\r
+ "palevioletred": [219, 112, 147],\r
+ "papayawhip": [255, 239, 213],\r
+ "peachpuff": [255, 218, 185],\r
+ "peru": [205, 133, 63],\r
+ "pink": [255, 192, 203],\r
+ "plum": [221, 160, 221],\r
+ "powderblue": [176, 224, 230],\r
+ "purple": [128, 0, 128],\r
+ "rebeccapurple": [102, 51, 153],\r
+ "red": [255, 0, 0],\r
+ "rosybrown": [188, 143, 143],\r
+ "royalblue": [65, 105, 225],\r
+ "saddlebrown": [139, 69, 19],\r
+ "salmon": [250, 128, 114],\r
+ "sandybrown": [244, 164, 96],\r
+ "seagreen": [46, 139, 87],\r
+ "seashell": [255, 245, 238],\r
+ "sienna": [160, 82, 45],\r
+ "silver": [192, 192, 192],\r
+ "skyblue": [135, 206, 235],\r
+ "slateblue": [106, 90, 205],\r
+ "slategray": [112, 128, 144],\r
+ "slategrey": [112, 128, 144],\r
+ "snow": [255, 250, 250],\r
+ "springgreen": [0, 255, 127],\r
+ "steelblue": [70, 130, 180],\r
+ "tan": [210, 180, 140],\r
+ "teal": [0, 128, 128],\r
+ "thistle": [216, 191, 216],\r
+ "tomato": [255, 99, 71],\r
+ "turquoise": [64, 224, 208],\r
+ "violet": [238, 130, 238],\r
+ "wheat": [245, 222, 179],\r
+ "white": [255, 255, 255],\r
+ "whitesmoke": [245, 245, 245],\r
+ "yellow": [255, 255, 0],\r
+ "yellowgreen": [154, 205, 50]\r
+};
+
+/* MIT license */
+
+
+var colorString = {
+ getRgba: getRgba,
+ getHsla: getHsla,
+ getRgb: getRgb,
+ getHsl: getHsl,
+ getHwb: getHwb,
+ getAlpha: getAlpha,
+
+ hexString: hexString,
+ rgbString: rgbString,
+ rgbaString: rgbaString,
+ percentString: percentString,
+ percentaString: percentaString,
+ hslString: hslString,
+ hslaString: hslaString,
+ hwbString: hwbString,
+ keyword: keyword
+};
+
+function getRgba(string) {
+ if (!string) {
+ return;
+ }
+ var abbr = /^#([a-fA-F0-9]{3,4})$/i,
+ hex = /^#([a-fA-F0-9]{6}([a-fA-F0-9]{2})?)$/i,
+ rgba = /^rgba?\(\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i,
+ per = /^rgba?\(\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i,
+ keyword = /(\w+)/;
+
+ var rgb = [0, 0, 0],
+ a = 1,
+ match = string.match(abbr),
+ hexAlpha = "";
+ if (match) {
+ match = match[1];
+ hexAlpha = match[3];
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = parseInt(match[i] + match[i], 16);
+ }
+ if (hexAlpha) {
+ a = Math.round((parseInt(hexAlpha + hexAlpha, 16) / 255) * 100) / 100;
+ }
+ }
+ else if (match = string.match(hex)) {
+ hexAlpha = match[2];
+ match = match[1];
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = parseInt(match.slice(i * 2, i * 2 + 2), 16);
+ }
+ if (hexAlpha) {
+ a = Math.round((parseInt(hexAlpha, 16) / 255) * 100) / 100;
+ }
+ }
+ else if (match = string.match(rgba)) {
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = parseInt(match[i + 1]);
+ }
+ a = parseFloat(match[4]);
+ }
+ else if (match = string.match(per)) {
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = Math.round(parseFloat(match[i + 1]) * 2.55);
+ }
+ a = parseFloat(match[4]);
+ }
+ else if (match = string.match(keyword)) {
+ if (match[1] == "transparent") {
+ return [0, 0, 0, 0];
+ }
+ rgb = colorName[match[1]];
+ if (!rgb) {
+ return;
+ }
+ }
+
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = scale(rgb[i], 0, 255);
+ }
+ if (!a && a != 0) {
+ a = 1;
+ }
+ else {
+ a = scale(a, 0, 1);
+ }
+ rgb[3] = a;
+ return rgb;
+}
+
+function getHsla(string) {
+ if (!string) {
+ return;
+ }
+ var hsl = /^hsla?\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
+ var match = string.match(hsl);
+ if (match) {
+ var alpha = parseFloat(match[4]);
+ var h = scale(parseInt(match[1]), 0, 360),
+ s = scale(parseFloat(match[2]), 0, 100),
+ l = scale(parseFloat(match[3]), 0, 100),
+ a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
+ return [h, s, l, a];
+ }
+}
+
+function getHwb(string) {
+ if (!string) {
+ return;
+ }
+ var hwb = /^hwb\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
+ var match = string.match(hwb);
+ if (match) {
+ var alpha = parseFloat(match[4]);
+ var h = scale(parseInt(match[1]), 0, 360),
+ w = scale(parseFloat(match[2]), 0, 100),
+ b = scale(parseFloat(match[3]), 0, 100),
+ a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
+ return [h, w, b, a];
+ }
+}
+
+function getRgb(string) {
+ var rgba = getRgba(string);
+ return rgba && rgba.slice(0, 3);
+}
+
+function getHsl(string) {
+ var hsla = getHsla(string);
+ return hsla && hsla.slice(0, 3);
+}
+
+function getAlpha(string) {
+ var vals = getRgba(string);
+ if (vals) {
+ return vals[3];
+ }
+ else if (vals = getHsla(string)) {
+ return vals[3];
+ }
+ else if (vals = getHwb(string)) {
+ return vals[3];
+ }
+}
+
+// generators
+function hexString(rgba, a) {
+ var a = (a !== undefined && rgba.length === 3) ? a : rgba[3];
+ return "#" + hexDouble(rgba[0])
+ + hexDouble(rgba[1])
+ + hexDouble(rgba[2])
+ + (
+ (a >= 0 && a < 1)
+ ? hexDouble(Math.round(a * 255))
+ : ""
+ );
+}
+
+function rgbString(rgba, alpha) {
+ if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
+ return rgbaString(rgba, alpha);
+ }
+ return "rgb(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2] + ")";
+}
+
+function rgbaString(rgba, alpha) {
+ if (alpha === undefined) {
+ alpha = (rgba[3] !== undefined ? rgba[3] : 1);
+ }
+ return "rgba(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2]
+ + ", " + alpha + ")";
+}
+
+function percentString(rgba, alpha) {
+ if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
+ return percentaString(rgba, alpha);
+ }
+ var r = Math.round(rgba[0]/255 * 100),
+ g = Math.round(rgba[1]/255 * 100),
+ b = Math.round(rgba[2]/255 * 100);
+
+ return "rgb(" + r + "%, " + g + "%, " + b + "%)";
+}
+
+function percentaString(rgba, alpha) {
+ var r = Math.round(rgba[0]/255 * 100),
+ g = Math.round(rgba[1]/255 * 100),
+ b = Math.round(rgba[2]/255 * 100);
+ return "rgba(" + r + "%, " + g + "%, " + b + "%, " + (alpha || rgba[3] || 1) + ")";
+}
+
+function hslString(hsla, alpha) {
+ if (alpha < 1 || (hsla[3] && hsla[3] < 1)) {
+ return hslaString(hsla, alpha);
+ }
+ return "hsl(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%)";
+}
+
+function hslaString(hsla, alpha) {
+ if (alpha === undefined) {
+ alpha = (hsla[3] !== undefined ? hsla[3] : 1);
+ }
+ return "hsla(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%, "
+ + alpha + ")";
+}
+
+// hwb is a bit different than rgb(a) & hsl(a) since there is no alpha specific syntax
+// (hwb have alpha optional & 1 is default value)
+function hwbString(hwb, alpha) {
+ if (alpha === undefined) {
+ alpha = (hwb[3] !== undefined ? hwb[3] : 1);
+ }
+ return "hwb(" + hwb[0] + ", " + hwb[1] + "%, " + hwb[2] + "%"
+ + (alpha !== undefined && alpha !== 1 ? ", " + alpha : "") + ")";
+}
+
+function keyword(rgb) {
+ return reverseNames[rgb.slice(0, 3)];
+}
+
+// helpers
+function scale(num, min, max) {
+ return Math.min(Math.max(min, num), max);
+}
+
+function hexDouble(num) {
+ var str = num.toString(16).toUpperCase();
+ return (str.length < 2) ? "0" + str : str;
+}
+
+
+//create a list of reverse color names
+var reverseNames = {};
+for (var name in colorName) {
+ reverseNames[colorName[name]] = name;
+}
+
+/* MIT license */
+
+
+
+var Color = function (obj) {
+ if (obj instanceof Color) {
+ return obj;
+ }
+ if (!(this instanceof Color)) {
+ return new Color(obj);
+ }
+
+ this.valid = false;
+ this.values = {
+ rgb: [0, 0, 0],
+ hsl: [0, 0, 0],
+ hsv: [0, 0, 0],
+ hwb: [0, 0, 0],
+ cmyk: [0, 0, 0, 0],
+ alpha: 1
+ };
+
+ // parse Color() argument
+ var vals;
+ if (typeof obj === 'string') {
+ vals = colorString.getRgba(obj);
+ if (vals) {
+ this.setValues('rgb', vals);
+ } else if (vals = colorString.getHsla(obj)) {
+ this.setValues('hsl', vals);
+ } else if (vals = colorString.getHwb(obj)) {
+ this.setValues('hwb', vals);
+ }
+ } else if (typeof obj === 'object') {
+ vals = obj;
+ if (vals.r !== undefined || vals.red !== undefined) {
+ this.setValues('rgb', vals);
+ } else if (vals.l !== undefined || vals.lightness !== undefined) {
+ this.setValues('hsl', vals);
+ } else if (vals.v !== undefined || vals.value !== undefined) {
+ this.setValues('hsv', vals);
+ } else if (vals.w !== undefined || vals.whiteness !== undefined) {
+ this.setValues('hwb', vals);
+ } else if (vals.c !== undefined || vals.cyan !== undefined) {
+ this.setValues('cmyk', vals);
+ }
+ }
+};
+
+Color.prototype = {
+ isValid: function () {
+ return this.valid;
+ },
+ rgb: function () {
+ return this.setSpace('rgb', arguments);
+ },
+ hsl: function () {
+ return this.setSpace('hsl', arguments);
+ },
+ hsv: function () {
+ return this.setSpace('hsv', arguments);
+ },
+ hwb: function () {
+ return this.setSpace('hwb', arguments);
+ },
+ cmyk: function () {
+ return this.setSpace('cmyk', arguments);
+ },
+
+ rgbArray: function () {
+ return this.values.rgb;
+ },
+ hslArray: function () {
+ return this.values.hsl;
+ },
+ hsvArray: function () {
+ return this.values.hsv;
+ },
+ hwbArray: function () {
+ var values = this.values;
+ if (values.alpha !== 1) {
+ return values.hwb.concat([values.alpha]);
+ }
+ return values.hwb;
+ },
+ cmykArray: function () {
+ return this.values.cmyk;
+ },
+ rgbaArray: function () {
+ var values = this.values;
+ return values.rgb.concat([values.alpha]);
+ },
+ hslaArray: function () {
+ var values = this.values;
+ return values.hsl.concat([values.alpha]);
+ },
+ alpha: function (val) {
+ if (val === undefined) {
+ return this.values.alpha;
+ }
+ this.setValues('alpha', val);
+ return this;
+ },
+
+ red: function (val) {
+ return this.setChannel('rgb', 0, val);
+ },
+ green: function (val) {
+ return this.setChannel('rgb', 1, val);
+ },
+ blue: function (val) {
+ return this.setChannel('rgb', 2, val);
+ },
+ hue: function (val) {
+ if (val) {
+ val %= 360;
+ val = val < 0 ? 360 + val : val;
+ }
+ return this.setChannel('hsl', 0, val);
+ },
+ saturation: function (val) {
+ return this.setChannel('hsl', 1, val);
+ },
+ lightness: function (val) {
+ return this.setChannel('hsl', 2, val);
+ },
+ saturationv: function (val) {
+ return this.setChannel('hsv', 1, val);
+ },
+ whiteness: function (val) {
+ return this.setChannel('hwb', 1, val);
+ },
+ blackness: function (val) {
+ return this.setChannel('hwb', 2, val);
+ },
+ value: function (val) {
+ return this.setChannel('hsv', 2, val);
+ },
+ cyan: function (val) {
+ return this.setChannel('cmyk', 0, val);
+ },
+ magenta: function (val) {
+ return this.setChannel('cmyk', 1, val);
+ },
+ yellow: function (val) {
+ return this.setChannel('cmyk', 2, val);
+ },
+ black: function (val) {
+ return this.setChannel('cmyk', 3, val);
+ },
+
+ hexString: function () {
+ return colorString.hexString(this.values.rgb);
+ },
+ rgbString: function () {
+ return colorString.rgbString(this.values.rgb, this.values.alpha);
+ },
+ rgbaString: function () {
+ return colorString.rgbaString(this.values.rgb, this.values.alpha);
+ },
+ percentString: function () {
+ return colorString.percentString(this.values.rgb, this.values.alpha);
+ },
+ hslString: function () {
+ return colorString.hslString(this.values.hsl, this.values.alpha);
+ },
+ hslaString: function () {
+ return colorString.hslaString(this.values.hsl, this.values.alpha);
+ },
+ hwbString: function () {
+ return colorString.hwbString(this.values.hwb, this.values.alpha);
+ },
+ keyword: function () {
+ return colorString.keyword(this.values.rgb, this.values.alpha);
+ },
+
+ rgbNumber: function () {
+ var rgb = this.values.rgb;
+ return (rgb[0] << 16) | (rgb[1] << 8) | rgb[2];
+ },
+
+ luminosity: function () {
+ // http://www.w3.org/TR/WCAG20/#relativeluminancedef
+ var rgb = this.values.rgb;
+ var lum = [];
+ for (var i = 0; i < rgb.length; i++) {
+ var chan = rgb[i] / 255;
+ lum[i] = (chan <= 0.03928) ? chan / 12.92 : Math.pow(((chan + 0.055) / 1.055), 2.4);
+ }
+ return 0.2126 * lum[0] + 0.7152 * lum[1] + 0.0722 * lum[2];
+ },
+
+ contrast: function (color2) {
+ // http://www.w3.org/TR/WCAG20/#contrast-ratiodef
+ var lum1 = this.luminosity();
+ var lum2 = color2.luminosity();
+ if (lum1 > lum2) {
+ return (lum1 + 0.05) / (lum2 + 0.05);
+ }
+ return (lum2 + 0.05) / (lum1 + 0.05);
+ },
+
+ level: function (color2) {
+ var contrastRatio = this.contrast(color2);
+ if (contrastRatio >= 7.1) {
+ return 'AAA';
+ }
+
+ return (contrastRatio >= 4.5) ? 'AA' : '';
+ },
+
+ dark: function () {
+ // YIQ equation from http://24ways.org/2010/calculating-color-contrast
+ var rgb = this.values.rgb;
+ var yiq = (rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000;
+ return yiq < 128;
+ },
+
+ light: function () {
+ return !this.dark();
+ },
+
+ negate: function () {
+ var rgb = [];
+ for (var i = 0; i < 3; i++) {
+ rgb[i] = 255 - this.values.rgb[i];
+ }
+ this.setValues('rgb', rgb);
+ return this;
+ },
+
+ lighten: function (ratio) {
+ var hsl = this.values.hsl;
+ hsl[2] += hsl[2] * ratio;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ darken: function (ratio) {
+ var hsl = this.values.hsl;
+ hsl[2] -= hsl[2] * ratio;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ saturate: function (ratio) {
+ var hsl = this.values.hsl;
+ hsl[1] += hsl[1] * ratio;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ desaturate: function (ratio) {
+ var hsl = this.values.hsl;
+ hsl[1] -= hsl[1] * ratio;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ whiten: function (ratio) {
+ var hwb = this.values.hwb;
+ hwb[1] += hwb[1] * ratio;
+ this.setValues('hwb', hwb);
+ return this;
+ },
+
+ blacken: function (ratio) {
+ var hwb = this.values.hwb;
+ hwb[2] += hwb[2] * ratio;
+ this.setValues('hwb', hwb);
+ return this;
+ },
+
+ greyscale: function () {
+ var rgb = this.values.rgb;
+ // http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale
+ var val = rgb[0] * 0.3 + rgb[1] * 0.59 + rgb[2] * 0.11;
+ this.setValues('rgb', [val, val, val]);
+ return this;
+ },
+
+ clearer: function (ratio) {
+ var alpha = this.values.alpha;
+ this.setValues('alpha', alpha - (alpha * ratio));
+ return this;
+ },
+
+ opaquer: function (ratio) {
+ var alpha = this.values.alpha;
+ this.setValues('alpha', alpha + (alpha * ratio));
+ return this;
+ },
+
+ rotate: function (degrees) {
+ var hsl = this.values.hsl;
+ var hue = (hsl[0] + degrees) % 360;
+ hsl[0] = hue < 0 ? 360 + hue : hue;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ /**
+ * Ported from sass implementation in C
+ * https://github.com/sass/libsass/blob/0e6b4a2850092356aa3ece07c6b249f0221caced/functions.cpp#L209
+ */
+ mix: function (mixinColor, weight) {
+ var color1 = this;
+ var color2 = mixinColor;
+ var p = weight === undefined ? 0.5 : weight;
+
+ var w = 2 * p - 1;
+ var a = color1.alpha() - color2.alpha();
+
+ var w1 = (((w * a === -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
+ var w2 = 1 - w1;
+
+ return this
+ .rgb(
+ w1 * color1.red() + w2 * color2.red(),
+ w1 * color1.green() + w2 * color2.green(),
+ w1 * color1.blue() + w2 * color2.blue()
+ )
+ .alpha(color1.alpha() * p + color2.alpha() * (1 - p));
+ },
+
+ toJSON: function () {
+ return this.rgb();
+ },
+
+ clone: function () {
+ // NOTE(SB): using node-clone creates a dependency to Buffer when using browserify,
+ // making the final build way to big to embed in Chart.js. So let's do it manually,
+ // assuming that values to clone are 1 dimension arrays containing only numbers,
+ // except 'alpha' which is a number.
+ var result = new Color();
+ var source = this.values;
+ var target = result.values;
+ var value, type;
+
+ for (var prop in source) {
+ if (source.hasOwnProperty(prop)) {
+ value = source[prop];
+ type = ({}).toString.call(value);
+ if (type === '[object Array]') {
+ target[prop] = value.slice(0);
+ } else if (type === '[object Number]') {
+ target[prop] = value;
+ } else {
+ console.error('unexpected color value:', value);
+ }
+ }
+ }
+
+ return result;
+ }
+};
+
+Color.prototype.spaces = {
+ rgb: ['red', 'green', 'blue'],
+ hsl: ['hue', 'saturation', 'lightness'],
+ hsv: ['hue', 'saturation', 'value'],
+ hwb: ['hue', 'whiteness', 'blackness'],
+ cmyk: ['cyan', 'magenta', 'yellow', 'black']
+};
+
+Color.prototype.maxes = {
+ rgb: [255, 255, 255],
+ hsl: [360, 100, 100],
+ hsv: [360, 100, 100],
+ hwb: [360, 100, 100],
+ cmyk: [100, 100, 100, 100]
+};
+
+Color.prototype.getValues = function (space) {
+ var values = this.values;
+ var vals = {};
+
+ for (var i = 0; i < space.length; i++) {
+ vals[space.charAt(i)] = values[space][i];
+ }
+
+ if (values.alpha !== 1) {
+ vals.a = values.alpha;
+ }
+
+ // {r: 255, g: 255, b: 255, a: 0.4}
+ return vals;
+};
+
+Color.prototype.setValues = function (space, vals) {
+ var values = this.values;
+ var spaces = this.spaces;
+ var maxes = this.maxes;
+ var alpha = 1;
+ var i;
+
+ this.valid = true;
+
+ if (space === 'alpha') {
+ alpha = vals;
+ } else if (vals.length) {
+ // [10, 10, 10]
+ values[space] = vals.slice(0, space.length);
+ alpha = vals[space.length];
+ } else if (vals[space.charAt(0)] !== undefined) {
+ // {r: 10, g: 10, b: 10}
+ for (i = 0; i < space.length; i++) {
+ values[space][i] = vals[space.charAt(i)];
+ }
+
+ alpha = vals.a;
+ } else if (vals[spaces[space][0]] !== undefined) {
+ // {red: 10, green: 10, blue: 10}
+ var chans = spaces[space];
+
+ for (i = 0; i < space.length; i++) {
+ values[space][i] = vals[chans[i]];
+ }
+
+ alpha = vals.alpha;
+ }
+
+ values.alpha = Math.max(0, Math.min(1, (alpha === undefined ? values.alpha : alpha)));
+
+ if (space === 'alpha') {
+ return false;
+ }
+
+ var capped;
+
+ // cap values of the space prior converting all values
+ for (i = 0; i < space.length; i++) {
+ capped = Math.max(0, Math.min(maxes[space][i], values[space][i]));
+ values[space][i] = Math.round(capped);
+ }
+
+ // convert to all the other color spaces
+ for (var sname in spaces) {
+ if (sname !== space) {
+ values[sname] = colorConvert[space][sname](values[space]);
+ }
+ }
+
+ return true;
+};
+
+Color.prototype.setSpace = function (space, args) {
+ var vals = args[0];
+
+ if (vals === undefined) {
+ // color.rgb()
+ return this.getValues(space);
+ }
+
+ // color.rgb(10, 10, 10)
+ if (typeof vals === 'number') {
+ vals = Array.prototype.slice.call(args);
+ }
+
+ this.setValues(space, vals);
+ return this;
+};
+
+Color.prototype.setChannel = function (space, index, val) {
+ var svalues = this.values[space];
+ if (val === undefined) {
+ // color.red()
+ return svalues[index];
+ } else if (val === svalues[index]) {
+ // color.red(color.red())
+ return this;
+ }
+
+ // color.red(100)
+ svalues[index] = val;
+ this.setValues(space, svalues);
+
+ return this;
+};
+
+if (typeof window !== 'undefined') {
+ window.Color = Color;
+}
+
+var chartjsColor = Color;
+
+/**
+ * @namespace Chart.helpers
+ */
+var helpers = {
+ /**
+ * An empty function that can be used, for example, for optional callback.
+ */
+ noop: function() {},
+
+ /**
+ * Returns a unique id, sequentially generated from a global variable.
+ * @returns {number}
+ * @function
+ */
+ uid: (function() {
+ var id = 0;
+ return function() {
+ return id++;
+ };
+ }()),
+
+ /**
+ * Returns true if `value` is neither null nor undefined, else returns false.
+ * @param {*} value - The value to test.
+ * @returns {boolean}
+ * @since 2.7.0
+ */
+ isNullOrUndef: function(value) {
+ return value === null || typeof value === 'undefined';
+ },
+
+ /**
+ * Returns true if `value` is an array (including typed arrays), else returns false.
+ * @param {*} value - The value to test.
+ * @returns {boolean}
+ * @function
+ */
+ isArray: function(value) {
+ if (Array.isArray && Array.isArray(value)) {
+ return true;
+ }
+ var type = Object.prototype.toString.call(value);
+ if (type.substr(0, 7) === '[object' && type.substr(-6) === 'Array]') {
+ return true;
+ }
+ return false;
+ },
+
+ /**
+ * Returns true if `value` is an object (excluding null), else returns false.
+ * @param {*} value - The value to test.
+ * @returns {boolean}
+ * @since 2.7.0
+ */
+ isObject: function(value) {
+ return value !== null && Object.prototype.toString.call(value) === '[object Object]';
+ },
+
+ /**
+ * Returns true if `value` is a finite number, else returns false
+ * @param {*} value - The value to test.
+ * @returns {boolean}
+ */
+ isFinite: function(value) {
+ return (typeof value === 'number' || value instanceof Number) && isFinite(value);
+ },
+
+ /**
+ * Returns `value` if defined, else returns `defaultValue`.
+ * @param {*} value - The value to return if defined.
+ * @param {*} defaultValue - The value to return if `value` is undefined.
+ * @returns {*}
+ */
+ valueOrDefault: function(value, defaultValue) {
+ return typeof value === 'undefined' ? defaultValue : value;
+ },
+
+ /**
+ * Returns value at the given `index` in array if defined, else returns `defaultValue`.
+ * @param {Array} value - The array to lookup for value at `index`.
+ * @param {number} index - The index in `value` to lookup for value.
+ * @param {*} defaultValue - The value to return if `value[index]` is undefined.
+ * @returns {*}
+ */
+ valueAtIndexOrDefault: function(value, index, defaultValue) {
+ return helpers.valueOrDefault(helpers.isArray(value) ? value[index] : value, defaultValue);
+ },
+
+ /**
+ * Calls `fn` with the given `args` in the scope defined by `thisArg` and returns the
+ * value returned by `fn`. If `fn` is not a function, this method returns undefined.
+ * @param {function} fn - The function to call.
+ * @param {Array|undefined|null} args - The arguments with which `fn` should be called.
+ * @param {object} [thisArg] - The value of `this` provided for the call to `fn`.
+ * @returns {*}
+ */
+ callback: function(fn, args, thisArg) {
+ if (fn && typeof fn.call === 'function') {
+ return fn.apply(thisArg, args);
+ }
+ },
+
+ /**
+ * Note(SB) for performance sake, this method should only be used when loopable type
+ * is unknown or in none intensive code (not called often and small loopable). Else
+ * it's preferable to use a regular for() loop and save extra function calls.
+ * @param {object|Array} loopable - The object or array to be iterated.
+ * @param {function} fn - The function to call for each item.
+ * @param {object} [thisArg] - The value of `this` provided for the call to `fn`.
+ * @param {boolean} [reverse] - If true, iterates backward on the loopable.
+ */
+ each: function(loopable, fn, thisArg, reverse) {
+ var i, len, keys;
+ if (helpers.isArray(loopable)) {
+ len = loopable.length;
+ if (reverse) {
+ for (i = len - 1; i >= 0; i--) {
+ fn.call(thisArg, loopable[i], i);
+ }
+ } else {
+ for (i = 0; i < len; i++) {
+ fn.call(thisArg, loopable[i], i);
+ }
+ }
+ } else if (helpers.isObject(loopable)) {
+ keys = Object.keys(loopable);
+ len = keys.length;
+ for (i = 0; i < len; i++) {
+ fn.call(thisArg, loopable[keys[i]], keys[i]);
+ }
+ }
+ },
+
+ /**
+ * Returns true if the `a0` and `a1` arrays have the same content, else returns false.
+ * @see https://stackoverflow.com/a/14853974
+ * @param {Array} a0 - The array to compare
+ * @param {Array} a1 - The array to compare
+ * @returns {boolean}
+ */
+ arrayEquals: function(a0, a1) {
+ var i, ilen, v0, v1;
+
+ if (!a0 || !a1 || a0.length !== a1.length) {
+ return false;
+ }
+
+ for (i = 0, ilen = a0.length; i < ilen; ++i) {
+ v0 = a0[i];
+ v1 = a1[i];
+
+ if (v0 instanceof Array && v1 instanceof Array) {
+ if (!helpers.arrayEquals(v0, v1)) {
+ return false;
+ }
+ } else if (v0 !== v1) {
+ // NOTE: two different object instances will never be equal: {x:20} != {x:20}
+ return false;
+ }
+ }
+
+ return true;
+ },
+
+ /**
+ * Returns a deep copy of `source` without keeping references on objects and arrays.
+ * @param {*} source - The value to clone.
+ * @returns {*}
+ */
+ clone: function(source) {
+ if (helpers.isArray(source)) {
+ return source.map(helpers.clone);
+ }
+
+ if (helpers.isObject(source)) {
+ var target = {};
+ var keys = Object.keys(source);
+ var klen = keys.length;
+ var k = 0;
+
+ for (; k < klen; ++k) {
+ target[keys[k]] = helpers.clone(source[keys[k]]);
+ }
+
+ return target;
+ }
+
+ return source;
+ },
+
+ /**
+ * The default merger when Chart.helpers.merge is called without merger option.
+ * Note(SB): also used by mergeConfig and mergeScaleConfig as fallback.
+ * @private
+ */
+ _merger: function(key, target, source, options) {
+ var tval = target[key];
+ var sval = source[key];
+
+ if (helpers.isObject(tval) && helpers.isObject(sval)) {
+ helpers.merge(tval, sval, options);
+ } else {
+ target[key] = helpers.clone(sval);
+ }
+ },
+
+ /**
+ * Merges source[key] in target[key] only if target[key] is undefined.
+ * @private
+ */
+ _mergerIf: function(key, target, source) {
+ var tval = target[key];
+ var sval = source[key];
+
+ if (helpers.isObject(tval) && helpers.isObject(sval)) {
+ helpers.mergeIf(tval, sval);
+ } else if (!target.hasOwnProperty(key)) {
+ target[key] = helpers.clone(sval);
+ }
+ },
+
+ /**
+ * Recursively deep copies `source` properties into `target` with the given `options`.
+ * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
+ * @param {object} target - The target object in which all sources are merged into.
+ * @param {object|object[]} source - Object(s) to merge into `target`.
+ * @param {object} [options] - Merging options:
+ * @param {function} [options.merger] - The merge method (key, target, source, options)
+ * @returns {object} The `target` object.
+ */
+ merge: function(target, source, options) {
+ var sources = helpers.isArray(source) ? source : [source];
+ var ilen = sources.length;
+ var merge, i, keys, klen, k;
+
+ if (!helpers.isObject(target)) {
+ return target;
+ }
+
+ options = options || {};
+ merge = options.merger || helpers._merger;
+
+ for (i = 0; i < ilen; ++i) {
+ source = sources[i];
+ if (!helpers.isObject(source)) {
+ continue;
+ }
+
+ keys = Object.keys(source);
+ for (k = 0, klen = keys.length; k < klen; ++k) {
+ merge(keys[k], target, source, options);
+ }
+ }
+
+ return target;
+ },
+
+ /**
+ * Recursively deep copies `source` properties into `target` *only* if not defined in target.
+ * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
+ * @param {object} target - The target object in which all sources are merged into.
+ * @param {object|object[]} source - Object(s) to merge into `target`.
+ * @returns {object} The `target` object.
+ */
+ mergeIf: function(target, source) {
+ return helpers.merge(target, source, {merger: helpers._mergerIf});
+ },
+
+ /**
+ * Applies the contents of two or more objects together into the first object.
+ * @param {object} target - The target object in which all objects are merged into.
+ * @param {object} arg1 - Object containing additional properties to merge in target.
+ * @param {object} argN - Additional objects containing properties to merge in target.
+ * @returns {object} The `target` object.
+ */
+ extend: function(target) {
+ var setFn = function(value, key) {
+ target[key] = value;
+ };
+ for (var i = 1, ilen = arguments.length; i < ilen; ++i) {
+ helpers.each(arguments[i], setFn);
+ }
+ return target;
+ },
+
+ /**
+ * Basic javascript inheritance based on the model created in Backbone.js
+ */
+ inherits: function(extensions) {
+ var me = this;
+ var ChartElement = (extensions && extensions.hasOwnProperty('constructor')) ? extensions.constructor : function() {
+ return me.apply(this, arguments);
+ };
+
+ var Surrogate = function() {
+ this.constructor = ChartElement;
+ };
+
+ Surrogate.prototype = me.prototype;
+ ChartElement.prototype = new Surrogate();
+ ChartElement.extend = helpers.inherits;
+
+ if (extensions) {
+ helpers.extend(ChartElement.prototype, extensions);
+ }
+
+ ChartElement.__super__ = me.prototype;
+ return ChartElement;
+ }
+};
+
+var helpers_core = helpers;
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.callback instead.
+ * @function Chart.helpers.callCallback
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers.callCallback = helpers.callback;
+
+/**
+ * Provided for backward compatibility, use Array.prototype.indexOf instead.
+ * Array.prototype.indexOf compatibility: Chrome, Opera, Safari, FF1.5+, IE9+
+ * @function Chart.helpers.indexOf
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers.indexOf = function(array, item, fromIndex) {
+ return Array.prototype.indexOf.call(array, item, fromIndex);
+};
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.valueOrDefault instead.
+ * @function Chart.helpers.getValueOrDefault
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers.getValueOrDefault = helpers.valueOrDefault;
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.valueAtIndexOrDefault instead.
+ * @function Chart.helpers.getValueAtIndexOrDefault
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers.getValueAtIndexOrDefault = helpers.valueAtIndexOrDefault;
+
+/**
+ * Easing functions adapted from Robert Penner's easing equations.
+ * @namespace Chart.helpers.easingEffects
+ * @see http://www.robertpenner.com/easing/
+ */
+var effects = {
+ linear: function(t) {
+ return t;
+ },
+
+ easeInQuad: function(t) {
+ return t * t;
+ },
+
+ easeOutQuad: function(t) {
+ return -t * (t - 2);
+ },
+
+ easeInOutQuad: function(t) {
+ if ((t /= 0.5) < 1) {
+ return 0.5 * t * t;
+ }
+ return -0.5 * ((--t) * (t - 2) - 1);
+ },
+
+ easeInCubic: function(t) {
+ return t * t * t;
+ },
+
+ easeOutCubic: function(t) {
+ return (t = t - 1) * t * t + 1;
+ },
+
+ easeInOutCubic: function(t) {
+ if ((t /= 0.5) < 1) {
+ return 0.5 * t * t * t;
+ }
+ return 0.5 * ((t -= 2) * t * t + 2);
+ },
+
+ easeInQuart: function(t) {
+ return t * t * t * t;
+ },
+
+ easeOutQuart: function(t) {
+ return -((t = t - 1) * t * t * t - 1);
+ },
+
+ easeInOutQuart: function(t) {
+ if ((t /= 0.5) < 1) {
+ return 0.5 * t * t * t * t;
+ }
+ return -0.5 * ((t -= 2) * t * t * t - 2);
+ },
+
+ easeInQuint: function(t) {
+ return t * t * t * t * t;
+ },
+
+ easeOutQuint: function(t) {
+ return (t = t - 1) * t * t * t * t + 1;
+ },
+
+ easeInOutQuint: function(t) {
+ if ((t /= 0.5) < 1) {
+ return 0.5 * t * t * t * t * t;
+ }
+ return 0.5 * ((t -= 2) * t * t * t * t + 2);
+ },
+
+ easeInSine: function(t) {
+ return -Math.cos(t * (Math.PI / 2)) + 1;
+ },
+
+ easeOutSine: function(t) {
+ return Math.sin(t * (Math.PI / 2));
+ },
+
+ easeInOutSine: function(t) {
+ return -0.5 * (Math.cos(Math.PI * t) - 1);
+ },
+
+ easeInExpo: function(t) {
+ return (t === 0) ? 0 : Math.pow(2, 10 * (t - 1));
+ },
+
+ easeOutExpo: function(t) {
+ return (t === 1) ? 1 : -Math.pow(2, -10 * t) + 1;
+ },
+
+ easeInOutExpo: function(t) {
+ if (t === 0) {
+ return 0;
+ }
+ if (t === 1) {
+ return 1;
+ }
+ if ((t /= 0.5) < 1) {
+ return 0.5 * Math.pow(2, 10 * (t - 1));
+ }
+ return 0.5 * (-Math.pow(2, -10 * --t) + 2);
+ },
+
+ easeInCirc: function(t) {
+ if (t >= 1) {
+ return t;
+ }
+ return -(Math.sqrt(1 - t * t) - 1);
+ },
+
+ easeOutCirc: function(t) {
+ return Math.sqrt(1 - (t = t - 1) * t);
+ },
+
+ easeInOutCirc: function(t) {
+ if ((t /= 0.5) < 1) {
+ return -0.5 * (Math.sqrt(1 - t * t) - 1);
+ }
+ return 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1);
+ },
+
+ easeInElastic: function(t) {
+ var s = 1.70158;
+ var p = 0;
+ var a = 1;
+ if (t === 0) {
+ return 0;
+ }
+ if (t === 1) {
+ return 1;
+ }
+ if (!p) {
+ p = 0.3;
+ }
+ if (a < 1) {
+ a = 1;
+ s = p / 4;
+ } else {
+ s = p / (2 * Math.PI) * Math.asin(1 / a);
+ }
+ return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
+ },
+
+ easeOutElastic: function(t) {
+ var s = 1.70158;
+ var p = 0;
+ var a = 1;
+ if (t === 0) {
+ return 0;
+ }
+ if (t === 1) {
+ return 1;
+ }
+ if (!p) {
+ p = 0.3;
+ }
+ if (a < 1) {
+ a = 1;
+ s = p / 4;
+ } else {
+ s = p / (2 * Math.PI) * Math.asin(1 / a);
+ }
+ return a * Math.pow(2, -10 * t) * Math.sin((t - s) * (2 * Math.PI) / p) + 1;
+ },
+
+ easeInOutElastic: function(t) {
+ var s = 1.70158;
+ var p = 0;
+ var a = 1;
+ if (t === 0) {
+ return 0;
+ }
+ if ((t /= 0.5) === 2) {
+ return 1;
+ }
+ if (!p) {
+ p = 0.45;
+ }
+ if (a < 1) {
+ a = 1;
+ s = p / 4;
+ } else {
+ s = p / (2 * Math.PI) * Math.asin(1 / a);
+ }
+ if (t < 1) {
+ return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
+ }
+ return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p) * 0.5 + 1;
+ },
+ easeInBack: function(t) {
+ var s = 1.70158;
+ return t * t * ((s + 1) * t - s);
+ },
+
+ easeOutBack: function(t) {
+ var s = 1.70158;
+ return (t = t - 1) * t * ((s + 1) * t + s) + 1;
+ },
+
+ easeInOutBack: function(t) {
+ var s = 1.70158;
+ if ((t /= 0.5) < 1) {
+ return 0.5 * (t * t * (((s *= (1.525)) + 1) * t - s));
+ }
+ return 0.5 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
+ },
+
+ easeInBounce: function(t) {
+ return 1 - effects.easeOutBounce(1 - t);
+ },
+
+ easeOutBounce: function(t) {
+ if (t < (1 / 2.75)) {
+ return 7.5625 * t * t;
+ }
+ if (t < (2 / 2.75)) {
+ return 7.5625 * (t -= (1.5 / 2.75)) * t + 0.75;
+ }
+ if (t < (2.5 / 2.75)) {
+ return 7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375;
+ }
+ return 7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375;
+ },
+
+ easeInOutBounce: function(t) {
+ if (t < 0.5) {
+ return effects.easeInBounce(t * 2) * 0.5;
+ }
+ return effects.easeOutBounce(t * 2 - 1) * 0.5 + 0.5;
+ }
+};
+
+var helpers_easing = {
+ effects: effects
+};
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.easing.effects instead.
+ * @function Chart.helpers.easingEffects
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers_core.easingEffects = effects;
+
+var PI = Math.PI;
+var RAD_PER_DEG = PI / 180;
+var DOUBLE_PI = PI * 2;
+var HALF_PI = PI / 2;
+var QUARTER_PI = PI / 4;
+var TWO_THIRDS_PI = PI * 2 / 3;
+
+/**
+ * @namespace Chart.helpers.canvas
+ */
+var exports$1 = {
+ /**
+ * Clears the entire canvas associated to the given `chart`.
+ * @param {Chart} chart - The chart for which to clear the canvas.
+ */
+ clear: function(chart) {
+ chart.ctx.clearRect(0, 0, chart.width, chart.height);
+ },
+
+ /**
+ * Creates a "path" for a rectangle with rounded corners at position (x, y) with a
+ * given size (width, height) and the same `radius` for all corners.
+ * @param {CanvasRenderingContext2D} ctx - The canvas 2D Context.
+ * @param {number} x - The x axis of the coordinate for the rectangle starting point.
+ * @param {number} y - The y axis of the coordinate for the rectangle starting point.
+ * @param {number} width - The rectangle's width.
+ * @param {number} height - The rectangle's height.
+ * @param {number} radius - The rounded amount (in pixels) for the four corners.
+ * @todo handle `radius` as top-left, top-right, bottom-right, bottom-left array/object?
+ */
+ roundedRect: function(ctx, x, y, width, height, radius) {
+ if (radius) {
+ var r = Math.min(radius, height / 2, width / 2);
+ var left = x + r;
+ var top = y + r;
+ var right = x + width - r;
+ var bottom = y + height - r;
+
+ ctx.moveTo(x, top);
+ if (left < right && top < bottom) {
+ ctx.arc(left, top, r, -PI, -HALF_PI);
+ ctx.arc(right, top, r, -HALF_PI, 0);
+ ctx.arc(right, bottom, r, 0, HALF_PI);
+ ctx.arc(left, bottom, r, HALF_PI, PI);
+ } else if (left < right) {
+ ctx.moveTo(left, y);
+ ctx.arc(right, top, r, -HALF_PI, HALF_PI);
+ ctx.arc(left, top, r, HALF_PI, PI + HALF_PI);
+ } else if (top < bottom) {
+ ctx.arc(left, top, r, -PI, 0);
+ ctx.arc(left, bottom, r, 0, PI);
+ } else {
+ ctx.arc(left, top, r, -PI, PI);
+ }
+ ctx.closePath();
+ ctx.moveTo(x, y);
+ } else {
+ ctx.rect(x, y, width, height);
+ }
+ },
+
+ drawPoint: function(ctx, style, radius, x, y, rotation) {
+ var type, xOffset, yOffset, size, cornerRadius;
+ var rad = (rotation || 0) * RAD_PER_DEG;
+
+ if (style && typeof style === 'object') {
+ type = style.toString();
+ if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') {
+ ctx.drawImage(style, x - style.width / 2, y - style.height / 2, style.width, style.height);
+ return;
+ }
+ }
+
+ if (isNaN(radius) || radius <= 0) {
+ return;
+ }
+
+ ctx.beginPath();
+
+ switch (style) {
+ // Default includes circle
+ default:
+ ctx.arc(x, y, radius, 0, DOUBLE_PI);
+ ctx.closePath();
+ break;
+ case 'triangle':
+ ctx.moveTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
+ rad += TWO_THIRDS_PI;
+ ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
+ rad += TWO_THIRDS_PI;
+ ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
+ ctx.closePath();
+ break;
+ case 'rectRounded':
+ // NOTE: the rounded rect implementation changed to use `arc` instead of
+ // `quadraticCurveTo` since it generates better results when rect is
+ // almost a circle. 0.516 (instead of 0.5) produces results with visually
+ // closer proportion to the previous impl and it is inscribed in the
+ // circle with `radius`. For more details, see the following PRs:
+ // https://github.com/chartjs/Chart.js/issues/5597
+ // https://github.com/chartjs/Chart.js/issues/5858
+ cornerRadius = radius * 0.516;
+ size = radius - cornerRadius;
+ xOffset = Math.cos(rad + QUARTER_PI) * size;
+ yOffset = Math.sin(rad + QUARTER_PI) * size;
+ ctx.arc(x - xOffset, y - yOffset, cornerRadius, rad - PI, rad - HALF_PI);
+ ctx.arc(x + yOffset, y - xOffset, cornerRadius, rad - HALF_PI, rad);
+ ctx.arc(x + xOffset, y + yOffset, cornerRadius, rad, rad + HALF_PI);
+ ctx.arc(x - yOffset, y + xOffset, cornerRadius, rad + HALF_PI, rad + PI);
+ ctx.closePath();
+ break;
+ case 'rect':
+ if (!rotation) {
+ size = Math.SQRT1_2 * radius;
+ ctx.rect(x - size, y - size, 2 * size, 2 * size);
+ break;
+ }
+ rad += QUARTER_PI;
+ /* falls through */
+ case 'rectRot':
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + yOffset, y - xOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.lineTo(x - yOffset, y + xOffset);
+ ctx.closePath();
+ break;
+ case 'crossRot':
+ rad += QUARTER_PI;
+ /* falls through */
+ case 'cross':
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.moveTo(x + yOffset, y - xOffset);
+ ctx.lineTo(x - yOffset, y + xOffset);
+ break;
+ case 'star':
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.moveTo(x + yOffset, y - xOffset);
+ ctx.lineTo(x - yOffset, y + xOffset);
+ rad += QUARTER_PI;
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.moveTo(x + yOffset, y - xOffset);
+ ctx.lineTo(x - yOffset, y + xOffset);
+ break;
+ case 'line':
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ break;
+ case 'dash':
+ ctx.moveTo(x, y);
+ ctx.lineTo(x + Math.cos(rad) * radius, y + Math.sin(rad) * radius);
+ break;
+ }
+
+ ctx.fill();
+ ctx.stroke();
+ },
+
+ /**
+ * Returns true if the point is inside the rectangle
+ * @param {object} point - The point to test
+ * @param {object} area - The rectangle
+ * @returns {boolean}
+ * @private
+ */
+ _isPointInArea: function(point, area) {
+ var epsilon = 1e-6; // 1e-6 is margin in pixels for accumulated error.
+
+ return point.x > area.left - epsilon && point.x < area.right + epsilon &&
+ point.y > area.top - epsilon && point.y < area.bottom + epsilon;
+ },
+
+ clipArea: function(ctx, area) {
+ ctx.save();
+ ctx.beginPath();
+ ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top);
+ ctx.clip();
+ },
+
+ unclipArea: function(ctx) {
+ ctx.restore();
+ },
+
+ lineTo: function(ctx, previous, target, flip) {
+ var stepped = target.steppedLine;
+ if (stepped) {
+ if (stepped === 'middle') {
+ var midpoint = (previous.x + target.x) / 2.0;
+ ctx.lineTo(midpoint, flip ? target.y : previous.y);
+ ctx.lineTo(midpoint, flip ? previous.y : target.y);
+ } else if ((stepped === 'after' && !flip) || (stepped !== 'after' && flip)) {
+ ctx.lineTo(previous.x, target.y);
+ } else {
+ ctx.lineTo(target.x, previous.y);
+ }
+ ctx.lineTo(target.x, target.y);
+ return;
+ }
+
+ if (!target.tension) {
+ ctx.lineTo(target.x, target.y);
+ return;
+ }
+
+ ctx.bezierCurveTo(
+ flip ? previous.controlPointPreviousX : previous.controlPointNextX,
+ flip ? previous.controlPointPreviousY : previous.controlPointNextY,
+ flip ? target.controlPointNextX : target.controlPointPreviousX,
+ flip ? target.controlPointNextY : target.controlPointPreviousY,
+ target.x,
+ target.y);
+ }
+};
+
+var helpers_canvas = exports$1;
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.canvas.clear instead.
+ * @namespace Chart.helpers.clear
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers_core.clear = exports$1.clear;
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.canvas.roundedRect instead.
+ * @namespace Chart.helpers.drawRoundedRectangle
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers_core.drawRoundedRectangle = function(ctx) {
+ ctx.beginPath();
+ exports$1.roundedRect.apply(exports$1, arguments);
+};
+
+var defaults = {
+ /**
+ * @private
+ */
+ _set: function(scope, values) {
+ return helpers_core.merge(this[scope] || (this[scope] = {}), values);
+ }
+};
+
+defaults._set('global', {
+ defaultColor: 'rgba(0,0,0,0.1)',
+ defaultFontColor: '#666',
+ defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
+ defaultFontSize: 12,
+ defaultFontStyle: 'normal',
+ defaultLineHeight: 1.2,
+ showLines: true
+});
+
+var core_defaults = defaults;
+
+var valueOrDefault = helpers_core.valueOrDefault;
+
+/**
+ * Converts the given font object into a CSS font string.
+ * @param {object} font - A font object.
+ * @return {string} The CSS font string. See https://developer.mozilla.org/en-US/docs/Web/CSS/font
+ * @private
+ */
+function toFontString(font) {
+ if (!font || helpers_core.isNullOrUndef(font.size) || helpers_core.isNullOrUndef(font.family)) {
+ return null;
+ }
+
+ return (font.style ? font.style + ' ' : '')
+ + (font.weight ? font.weight + ' ' : '')
+ + font.size + 'px '
+ + font.family;
+}
+
+/**
+ * @alias Chart.helpers.options
+ * @namespace
+ */
+var helpers_options = {
+ /**
+ * Converts the given line height `value` in pixels for a specific font `size`.
+ * @param {number|string} value - The lineHeight to parse (eg. 1.6, '14px', '75%', '1.6em').
+ * @param {number} size - The font size (in pixels) used to resolve relative `value`.
+ * @returns {number} The effective line height in pixels (size * 1.2 if value is invalid).
+ * @see https://developer.mozilla.org/en-US/docs/Web/CSS/line-height
+ * @since 2.7.0
+ */
+ toLineHeight: function(value, size) {
+ var matches = ('' + value).match(/^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/);
+ if (!matches || matches[1] === 'normal') {
+ return size * 1.2;
+ }
+
+ value = +matches[2];
+
+ switch (matches[3]) {
+ case 'px':
+ return value;
+ case '%':
+ value /= 100;
+ break;
+ default:
+ break;
+ }
+
+ return size * value;
+ },
+
+ /**
+ * Converts the given value into a padding object with pre-computed width/height.
+ * @param {number|object} value - If a number, set the value to all TRBL component,
+ * else, if and object, use defined properties and sets undefined ones to 0.
+ * @returns {object} The padding values (top, right, bottom, left, width, height)
+ * @since 2.7.0
+ */
+ toPadding: function(value) {
+ var t, r, b, l;
+
+ if (helpers_core.isObject(value)) {
+ t = +value.top || 0;
+ r = +value.right || 0;
+ b = +value.bottom || 0;
+ l = +value.left || 0;
+ } else {
+ t = r = b = l = +value || 0;
+ }
+
+ return {
+ top: t,
+ right: r,
+ bottom: b,
+ left: l,
+ height: t + b,
+ width: l + r
+ };
+ },
+
+ /**
+ * Parses font options and returns the font object.
+ * @param {object} options - A object that contains font options to be parsed.
+ * @return {object} The font object.
+ * @todo Support font.* options and renamed to toFont().
+ * @private
+ */
+ _parseFont: function(options) {
+ var globalDefaults = core_defaults.global;
+ var size = valueOrDefault(options.fontSize, globalDefaults.defaultFontSize);
+ var font = {
+ family: valueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily),
+ lineHeight: helpers_core.options.toLineHeight(valueOrDefault(options.lineHeight, globalDefaults.defaultLineHeight), size),
+ size: size,
+ style: valueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle),
+ weight: null,
+ string: ''
+ };
+
+ font.string = toFontString(font);
+ return font;
+ },
+
+ /**
+ * Evaluates the given `inputs` sequentially and returns the first defined value.
+ * @param {Array} inputs - An array of values, falling back to the last value.
+ * @param {object} [context] - If defined and the current value is a function, the value
+ * is called with `context` as first argument and the result becomes the new input.
+ * @param {number} [index] - If defined and the current value is an array, the value
+ * at `index` become the new input.
+ * @since 2.7.0
+ */
+ resolve: function(inputs, context, index) {
+ var i, ilen, value;
+
+ for (i = 0, ilen = inputs.length; i < ilen; ++i) {
+ value = inputs[i];
+ if (value === undefined) {
+ continue;
+ }
+ if (context !== undefined && typeof value === 'function') {
+ value = value(context);
+ }
+ if (index !== undefined && helpers_core.isArray(value)) {
+ value = value[index];
+ }
+ if (value !== undefined) {
+ return value;
+ }
+ }
+ }
+};
+
+var helpers$1 = helpers_core;
+var easing = helpers_easing;
+var canvas = helpers_canvas;
+var options = helpers_options;
+helpers$1.easing = easing;
+helpers$1.canvas = canvas;
+helpers$1.options = options;
+
+function interpolate(start, view, model, ease) {
+ var keys = Object.keys(model);
+ var i, ilen, key, actual, origin, target, type, c0, c1;
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+
+ target = model[key];
+
+ // if a value is added to the model after pivot() has been called, the view
+ // doesn't contain it, so let's initialize the view to the target value.
+ if (!view.hasOwnProperty(key)) {
+ view[key] = target;
+ }
+
+ actual = view[key];
+
+ if (actual === target || key[0] === '_') {
+ continue;
+ }
+
+ if (!start.hasOwnProperty(key)) {
+ start[key] = actual;
+ }
+
+ origin = start[key];
+
+ type = typeof target;
+
+ if (type === typeof origin) {
+ if (type === 'string') {
+ c0 = chartjsColor(origin);
+ if (c0.valid) {
+ c1 = chartjsColor(target);
+ if (c1.valid) {
+ view[key] = c1.mix(c0, ease).rgbString();
+ continue;
+ }
+ }
+ } else if (helpers$1.isFinite(origin) && helpers$1.isFinite(target)) {
+ view[key] = origin + (target - origin) * ease;
+ continue;
+ }
+ }
+
+ view[key] = target;
+ }
+}
+
+var Element = function(configuration) {
+ helpers$1.extend(this, configuration);
+ this.initialize.apply(this, arguments);
+};
+
+helpers$1.extend(Element.prototype, {
+
+ initialize: function() {
+ this.hidden = false;
+ },
+
+ pivot: function() {
+ var me = this;
+ if (!me._view) {
+ me._view = helpers$1.clone(me._model);
+ }
+ me._start = {};
+ return me;
+ },
+
+ transition: function(ease) {
+ var me = this;
+ var model = me._model;
+ var start = me._start;
+ var view = me._view;
+
+ // No animation -> No Transition
+ if (!model || ease === 1) {
+ me._view = model;
+ me._start = null;
+ return me;
+ }
+
+ if (!view) {
+ view = me._view = {};
+ }
+
+ if (!start) {
+ start = me._start = {};
+ }
+
+ interpolate(start, view, model, ease);
+
+ return me;
+ },
+
+ tooltipPosition: function() {
+ return {
+ x: this._model.x,
+ y: this._model.y
+ };
+ },
+
+ hasValue: function() {
+ return helpers$1.isNumber(this._model.x) && helpers$1.isNumber(this._model.y);
+ }
+});
+
+Element.extend = helpers$1.inherits;
+
+var core_element = Element;
+
+var exports$2 = core_element.extend({
+ chart: null, // the animation associated chart instance
+ currentStep: 0, // the current animation step
+ numSteps: 60, // default number of steps
+ easing: '', // the easing to use for this animation
+ render: null, // render function used by the animation service
+
+ onAnimationProgress: null, // user specified callback to fire on each step of the animation
+ onAnimationComplete: null, // user specified callback to fire when the animation finishes
+});
+
+var core_animation = exports$2;
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart.Animation instead
+ * @prop Chart.Animation#animationObject
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ */
+Object.defineProperty(exports$2.prototype, 'animationObject', {
+ get: function() {
+ return this;
+ }
+});
+
+/**
+ * Provided for backward compatibility, use Chart.Animation#chart instead
+ * @prop Chart.Animation#chartInstance
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ */
+Object.defineProperty(exports$2.prototype, 'chartInstance', {
+ get: function() {
+ return this.chart;
+ },
+ set: function(value) {
+ this.chart = value;
+ }
+});
+
+core_defaults._set('global', {
+ animation: {
+ duration: 1000,
+ easing: 'easeOutQuart',
+ onProgress: helpers$1.noop,
+ onComplete: helpers$1.noop
+ }
+});
+
+var core_animations = {
+ animations: [],
+ request: null,
+
+ /**
+ * @param {Chart} chart - The chart to animate.
+ * @param {Chart.Animation} animation - The animation that we will animate.
+ * @param {number} duration - The animation duration in ms.
+ * @param {boolean} lazy - if true, the chart is not marked as animating to enable more responsive interactions
+ */
+ addAnimation: function(chart, animation, duration, lazy) {
+ var animations = this.animations;
+ var i, ilen;
+
+ animation.chart = chart;
+ animation.startTime = Date.now();
+ animation.duration = duration;
+
+ if (!lazy) {
+ chart.animating = true;
+ }
+
+ for (i = 0, ilen = animations.length; i < ilen; ++i) {
+ if (animations[i].chart === chart) {
+ animations[i] = animation;
+ return;
+ }
+ }
+
+ animations.push(animation);
+
+ // If there are no animations queued, manually kickstart a digest, for lack of a better word
+ if (animations.length === 1) {
+ this.requestAnimationFrame();
+ }
+ },
+
+ cancelAnimation: function(chart) {
+ var index = helpers$1.findIndex(this.animations, function(animation) {
+ return animation.chart === chart;
+ });
+
+ if (index !== -1) {
+ this.animations.splice(index, 1);
+ chart.animating = false;
+ }
+ },
+
+ requestAnimationFrame: function() {
+ var me = this;
+ if (me.request === null) {
+ // Skip animation frame requests until the active one is executed.
+ // This can happen when processing mouse events, e.g. 'mousemove'
+ // and 'mouseout' events will trigger multiple renders.
+ me.request = helpers$1.requestAnimFrame.call(window, function() {
+ me.request = null;
+ me.startDigest();
+ });
+ }
+ },
+
+ /**
+ * @private
+ */
+ startDigest: function() {
+ var me = this;
+
+ me.advance();
+
+ // Do we have more stuff to animate?
+ if (me.animations.length > 0) {
+ me.requestAnimationFrame();
+ }
+ },
+
+ /**
+ * @private
+ */
+ advance: function() {
+ var animations = this.animations;
+ var animation, chart, numSteps, nextStep;
+ var i = 0;
+
+ // 1 animation per chart, so we are looping charts here
+ while (i < animations.length) {
+ animation = animations[i];
+ chart = animation.chart;
+ numSteps = animation.numSteps;
+
+ // Make sure that currentStep starts at 1
+ // https://github.com/chartjs/Chart.js/issues/6104
+ nextStep = Math.floor((Date.now() - animation.startTime) / animation.duration * numSteps) + 1;
+ animation.currentStep = Math.min(nextStep, numSteps);
+
+ helpers$1.callback(animation.render, [chart, animation], chart);
+ helpers$1.callback(animation.onAnimationProgress, [animation], chart);
+
+ if (animation.currentStep >= numSteps) {
+ helpers$1.callback(animation.onAnimationComplete, [animation], chart);
+ chart.animating = false;
+ animations.splice(i, 1);
+ } else {
+ ++i;
+ }
+ }
+ }
+};
+
+var resolve = helpers$1.options.resolve;
+
+var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift'];
+
+/**
+ * Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice',
+ * 'unshift') and notify the listener AFTER the array has been altered. Listeners are
+ * called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments.
+ */
+function listenArrayEvents(array, listener) {
+ if (array._chartjs) {
+ array._chartjs.listeners.push(listener);
+ return;
+ }
+
+ Object.defineProperty(array, '_chartjs', {
+ configurable: true,
+ enumerable: false,
+ value: {
+ listeners: [listener]
+ }
+ });
+
+ arrayEvents.forEach(function(key) {
+ var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1);
+ var base = array[key];
+
+ Object.defineProperty(array, key, {
+ configurable: true,
+ enumerable: false,
+ value: function() {
+ var args = Array.prototype.slice.call(arguments);
+ var res = base.apply(this, args);
+
+ helpers$1.each(array._chartjs.listeners, function(object) {
+ if (typeof object[method] === 'function') {
+ object[method].apply(object, args);
+ }
+ });
+
+ return res;
+ }
+ });
+ });
+}
+
+/**
+ * Removes the given array event listener and cleanup extra attached properties (such as
+ * the _chartjs stub and overridden methods) if array doesn't have any more listeners.
+ */
+function unlistenArrayEvents(array, listener) {
+ var stub = array._chartjs;
+ if (!stub) {
+ return;
+ }
+
+ var listeners = stub.listeners;
+ var index = listeners.indexOf(listener);
+ if (index !== -1) {
+ listeners.splice(index, 1);
+ }
+
+ if (listeners.length > 0) {
+ return;
+ }
+
+ arrayEvents.forEach(function(key) {
+ delete array[key];
+ });
+
+ delete array._chartjs;
+}
+
+// Base class for all dataset controllers (line, bar, etc)
+var DatasetController = function(chart, datasetIndex) {
+ this.initialize(chart, datasetIndex);
+};
+
+helpers$1.extend(DatasetController.prototype, {
+
+ /**
+ * Element type used to generate a meta dataset (e.g. Chart.element.Line).
+ * @type {Chart.core.element}
+ */
+ datasetElementType: null,
+
+ /**
+ * Element type used to generate a meta data (e.g. Chart.element.Point).
+ * @type {Chart.core.element}
+ */
+ dataElementType: null,
+
+ initialize: function(chart, datasetIndex) {
+ var me = this;
+ me.chart = chart;
+ me.index = datasetIndex;
+ me.linkScales();
+ me.addElements();
+ },
+
+ updateIndex: function(datasetIndex) {
+ this.index = datasetIndex;
+ },
+
+ linkScales: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var dataset = me.getDataset();
+
+ if (meta.xAxisID === null || !(meta.xAxisID in me.chart.scales)) {
+ meta.xAxisID = dataset.xAxisID || me.chart.options.scales.xAxes[0].id;
+ }
+ if (meta.yAxisID === null || !(meta.yAxisID in me.chart.scales)) {
+ meta.yAxisID = dataset.yAxisID || me.chart.options.scales.yAxes[0].id;
+ }
+ },
+
+ getDataset: function() {
+ return this.chart.data.datasets[this.index];
+ },
+
+ getMeta: function() {
+ return this.chart.getDatasetMeta(this.index);
+ },
+
+ getScaleForId: function(scaleID) {
+ return this.chart.scales[scaleID];
+ },
+
+ /**
+ * @private
+ */
+ _getValueScaleId: function() {
+ return this.getMeta().yAxisID;
+ },
+
+ /**
+ * @private
+ */
+ _getIndexScaleId: function() {
+ return this.getMeta().xAxisID;
+ },
+
+ /**
+ * @private
+ */
+ _getValueScale: function() {
+ return this.getScaleForId(this._getValueScaleId());
+ },
+
+ /**
+ * @private
+ */
+ _getIndexScale: function() {
+ return this.getScaleForId(this._getIndexScaleId());
+ },
+
+ reset: function() {
+ this.update(true);
+ },
+
+ /**
+ * @private
+ */
+ destroy: function() {
+ if (this._data) {
+ unlistenArrayEvents(this._data, this);
+ }
+ },
+
+ createMetaDataset: function() {
+ var me = this;
+ var type = me.datasetElementType;
+ return type && new type({
+ _chart: me.chart,
+ _datasetIndex: me.index
+ });
+ },
+
+ createMetaData: function(index) {
+ var me = this;
+ var type = me.dataElementType;
+ return type && new type({
+ _chart: me.chart,
+ _datasetIndex: me.index,
+ _index: index
+ });
+ },
+
+ addElements: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var data = me.getDataset().data || [];
+ var metaData = meta.data;
+ var i, ilen;
+
+ for (i = 0, ilen = data.length; i < ilen; ++i) {
+ metaData[i] = metaData[i] || me.createMetaData(i);
+ }
+
+ meta.dataset = meta.dataset || me.createMetaDataset();
+ },
+
+ addElementAndReset: function(index) {
+ var element = this.createMetaData(index);
+ this.getMeta().data.splice(index, 0, element);
+ this.updateElement(element, index, true);
+ },
+
+ buildOrUpdateElements: function() {
+ var me = this;
+ var dataset = me.getDataset();
+ var data = dataset.data || (dataset.data = []);
+
+ // In order to correctly handle data addition/deletion animation (an thus simulate
+ // real-time charts), we need to monitor these data modifications and synchronize
+ // the internal meta data accordingly.
+ if (me._data !== data) {
+ if (me._data) {
+ // This case happens when the user replaced the data array instance.
+ unlistenArrayEvents(me._data, me);
+ }
+
+ if (data && Object.isExtensible(data)) {
+ listenArrayEvents(data, me);
+ }
+ me._data = data;
+ }
+
+ // Re-sync meta data in case the user replaced the data array or if we missed
+ // any updates and so make sure that we handle number of datapoints changing.
+ me.resyncElements();
+ },
+
+ update: helpers$1.noop,
+
+ transition: function(easingValue) {
+ var meta = this.getMeta();
+ var elements = meta.data || [];
+ var ilen = elements.length;
+ var i = 0;
+
+ for (; i < ilen; ++i) {
+ elements[i].transition(easingValue);
+ }
+
+ if (meta.dataset) {
+ meta.dataset.transition(easingValue);
+ }
+ },
+
+ draw: function() {
+ var meta = this.getMeta();
+ var elements = meta.data || [];
+ var ilen = elements.length;
+ var i = 0;
+
+ if (meta.dataset) {
+ meta.dataset.draw();
+ }
+
+ for (; i < ilen; ++i) {
+ elements[i].draw();
+ }
+ },
+
+ removeHoverStyle: function(element) {
+ helpers$1.merge(element._model, element.$previousStyle || {});
+ delete element.$previousStyle;
+ },
+
+ setHoverStyle: function(element) {
+ var dataset = this.chart.data.datasets[element._datasetIndex];
+ var index = element._index;
+ var custom = element.custom || {};
+ var model = element._model;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ element.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth
+ };
+
+ model.backgroundColor = resolve([custom.hoverBackgroundColor, dataset.hoverBackgroundColor, getHoverColor(model.backgroundColor)], undefined, index);
+ model.borderColor = resolve([custom.hoverBorderColor, dataset.hoverBorderColor, getHoverColor(model.borderColor)], undefined, index);
+ model.borderWidth = resolve([custom.hoverBorderWidth, dataset.hoverBorderWidth, model.borderWidth], undefined, index);
+ },
+
+ /**
+ * @private
+ */
+ resyncElements: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var data = me.getDataset().data;
+ var numMeta = meta.data.length;
+ var numData = data.length;
+
+ if (numData < numMeta) {
+ meta.data.splice(numData, numMeta - numData);
+ } else if (numData > numMeta) {
+ me.insertElements(numMeta, numData - numMeta);
+ }
+ },
+
+ /**
+ * @private
+ */
+ insertElements: function(start, count) {
+ for (var i = 0; i < count; ++i) {
+ this.addElementAndReset(start + i);
+ }
+ },
+
+ /**
+ * @private
+ */
+ onDataPush: function() {
+ var count = arguments.length;
+ this.insertElements(this.getDataset().data.length - count, count);
+ },
+
+ /**
+ * @private
+ */
+ onDataPop: function() {
+ this.getMeta().data.pop();
+ },
+
+ /**
+ * @private
+ */
+ onDataShift: function() {
+ this.getMeta().data.shift();
+ },
+
+ /**
+ * @private
+ */
+ onDataSplice: function(start, count) {
+ this.getMeta().data.splice(start, count);
+ this.insertElements(start, arguments.length - 2);
+ },
+
+ /**
+ * @private
+ */
+ onDataUnshift: function() {
+ this.insertElements(0, arguments.length);
+ }
+});
+
+DatasetController.extend = helpers$1.inherits;
+
+var core_datasetController = DatasetController;
+
+core_defaults._set('global', {
+ elements: {
+ arc: {
+ backgroundColor: core_defaults.global.defaultColor,
+ borderColor: '#fff',
+ borderWidth: 2,
+ borderAlign: 'center'
+ }
+ }
+});
+
+var element_arc = core_element.extend({
+ inLabelRange: function(mouseX) {
+ var vm = this._view;
+
+ if (vm) {
+ return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2));
+ }
+ return false;
+ },
+
+ inRange: function(chartX, chartY) {
+ var vm = this._view;
+
+ if (vm) {
+ var pointRelativePosition = helpers$1.getAngleFromPoint(vm, {x: chartX, y: chartY});
+ var angle = pointRelativePosition.angle;
+ var distance = pointRelativePosition.distance;
+
+ // Sanitise angle range
+ var startAngle = vm.startAngle;
+ var endAngle = vm.endAngle;
+ while (endAngle < startAngle) {
+ endAngle += 2.0 * Math.PI;
+ }
+ while (angle > endAngle) {
+ angle -= 2.0 * Math.PI;
+ }
+ while (angle < startAngle) {
+ angle += 2.0 * Math.PI;
+ }
+
+ // Check if within the range of the open/close angle
+ var betweenAngles = (angle >= startAngle && angle <= endAngle);
+ var withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius);
+
+ return (betweenAngles && withinRadius);
+ }
+ return false;
+ },
+
+ getCenterPoint: function() {
+ var vm = this._view;
+ var halfAngle = (vm.startAngle + vm.endAngle) / 2;
+ var halfRadius = (vm.innerRadius + vm.outerRadius) / 2;
+ return {
+ x: vm.x + Math.cos(halfAngle) * halfRadius,
+ y: vm.y + Math.sin(halfAngle) * halfRadius
+ };
+ },
+
+ getArea: function() {
+ var vm = this._view;
+ return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2));
+ },
+
+ tooltipPosition: function() {
+ var vm = this._view;
+ var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2);
+ var rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius;
+
+ return {
+ x: vm.x + (Math.cos(centreAngle) * rangeFromCentre),
+ y: vm.y + (Math.sin(centreAngle) * rangeFromCentre)
+ };
+ },
+
+ draw: function() {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
+ var sA = vm.startAngle;
+ var eA = vm.endAngle;
+ var pixelMargin = (vm.borderAlign === 'inner') ? 0.33 : 0;
+ var angleMargin;
+
+ ctx.save();
+
+ ctx.beginPath();
+ ctx.arc(vm.x, vm.y, Math.max(vm.outerRadius - pixelMargin, 0), sA, eA);
+ ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true);
+ ctx.closePath();
+
+ ctx.fillStyle = vm.backgroundColor;
+ ctx.fill();
+
+ if (vm.borderWidth) {
+ if (vm.borderAlign === 'inner') {
+ // Draw an inner border by cliping the arc and drawing a double-width border
+ // Enlarge the clipping arc by 0.33 pixels to eliminate glitches between borders
+ ctx.beginPath();
+ angleMargin = pixelMargin / vm.outerRadius;
+ ctx.arc(vm.x, vm.y, vm.outerRadius, sA - angleMargin, eA + angleMargin);
+ if (vm.innerRadius > pixelMargin) {
+ angleMargin = pixelMargin / vm.innerRadius;
+ ctx.arc(vm.x, vm.y, vm.innerRadius - pixelMargin, eA + angleMargin, sA - angleMargin, true);
+ } else {
+ ctx.arc(vm.x, vm.y, pixelMargin, eA + Math.PI / 2, sA - Math.PI / 2);
+ }
+ ctx.closePath();
+ ctx.clip();
+
+ ctx.beginPath();
+ ctx.arc(vm.x, vm.y, vm.outerRadius, sA, eA);
+ ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true);
+ ctx.closePath();
+
+ ctx.lineWidth = vm.borderWidth * 2;
+ ctx.lineJoin = 'round';
+ } else {
+ ctx.lineWidth = vm.borderWidth;
+ ctx.lineJoin = 'bevel';
+ }
+
+ ctx.strokeStyle = vm.borderColor;
+ ctx.stroke();
+ }
+
+ ctx.restore();
+ }
+});
+
+var valueOrDefault$1 = helpers$1.valueOrDefault;
+
+var defaultColor = core_defaults.global.defaultColor;
+
+core_defaults._set('global', {
+ elements: {
+ line: {
+ tension: 0.4,
+ backgroundColor: defaultColor,
+ borderWidth: 3,
+ borderColor: defaultColor,
+ borderCapStyle: 'butt',
+ borderDash: [],
+ borderDashOffset: 0.0,
+ borderJoinStyle: 'miter',
+ capBezierPoints: true,
+ fill: true, // do we fill in the area between the line and its base axis
+ }
+ }
+});
+
+var element_line = core_element.extend({
+ draw: function() {
+ var me = this;
+ var vm = me._view;
+ var ctx = me._chart.ctx;
+ var spanGaps = vm.spanGaps;
+ var points = me._children.slice(); // clone array
+ var globalDefaults = core_defaults.global;
+ var globalOptionLineElements = globalDefaults.elements.line;
+ var lastDrawnIndex = -1;
+ var index, current, previous, currentVM;
+
+ // If we are looping, adding the first point again
+ if (me._loop && points.length) {
+ points.push(points[0]);
+ }
+
+ ctx.save();
+
+ // Stroke Line Options
+ ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle;
+
+ // IE 9 and 10 do not support line dash
+ if (ctx.setLineDash) {
+ ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash);
+ }
+
+ ctx.lineDashOffset = valueOrDefault$1(vm.borderDashOffset, globalOptionLineElements.borderDashOffset);
+ ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle;
+ ctx.lineWidth = valueOrDefault$1(vm.borderWidth, globalOptionLineElements.borderWidth);
+ ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor;
+
+ // Stroke Line
+ ctx.beginPath();
+ lastDrawnIndex = -1;
+
+ for (index = 0; index < points.length; ++index) {
+ current = points[index];
+ previous = helpers$1.previousItem(points, index);
+ currentVM = current._view;
+
+ // First point moves to it's starting position no matter what
+ if (index === 0) {
+ if (!currentVM.skip) {
+ ctx.moveTo(currentVM.x, currentVM.y);
+ lastDrawnIndex = index;
+ }
+ } else {
+ previous = lastDrawnIndex === -1 ? previous : points[lastDrawnIndex];
+
+ if (!currentVM.skip) {
+ if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) {
+ // There was a gap and this is the first point after the gap
+ ctx.moveTo(currentVM.x, currentVM.y);
+ } else {
+ // Line to next point
+ helpers$1.canvas.lineTo(ctx, previous._view, current._view);
+ }
+ lastDrawnIndex = index;
+ }
+ }
+ }
+
+ ctx.stroke();
+ ctx.restore();
+ }
+});
+
+var valueOrDefault$2 = helpers$1.valueOrDefault;
+
+var defaultColor$1 = core_defaults.global.defaultColor;
+
+core_defaults._set('global', {
+ elements: {
+ point: {
+ radius: 3,
+ pointStyle: 'circle',
+ backgroundColor: defaultColor$1,
+ borderColor: defaultColor$1,
+ borderWidth: 1,
+ // Hover
+ hitRadius: 1,
+ hoverRadius: 4,
+ hoverBorderWidth: 1
+ }
+ }
+});
+
+function xRange(mouseX) {
+ var vm = this._view;
+ return vm ? (Math.abs(mouseX - vm.x) < vm.radius + vm.hitRadius) : false;
+}
+
+function yRange(mouseY) {
+ var vm = this._view;
+ return vm ? (Math.abs(mouseY - vm.y) < vm.radius + vm.hitRadius) : false;
+}
+
+var element_point = core_element.extend({
+ inRange: function(mouseX, mouseY) {
+ var vm = this._view;
+ return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false;
+ },
+
+ inLabelRange: xRange,
+ inXRange: xRange,
+ inYRange: yRange,
+
+ getCenterPoint: function() {
+ var vm = this._view;
+ return {
+ x: vm.x,
+ y: vm.y
+ };
+ },
+
+ getArea: function() {
+ return Math.PI * Math.pow(this._view.radius, 2);
+ },
+
+ tooltipPosition: function() {
+ var vm = this._view;
+ return {
+ x: vm.x,
+ y: vm.y,
+ padding: vm.radius + vm.borderWidth
+ };
+ },
+
+ draw: function(chartArea) {
+ var vm = this._view;
+ var ctx = this._chart.ctx;
+ var pointStyle = vm.pointStyle;
+ var rotation = vm.rotation;
+ var radius = vm.radius;
+ var x = vm.x;
+ var y = vm.y;
+ var globalDefaults = core_defaults.global;
+ var defaultColor = globalDefaults.defaultColor; // eslint-disable-line no-shadow
+
+ if (vm.skip) {
+ return;
+ }
+
+ // Clipping for Points.
+ if (chartArea === undefined || helpers$1.canvas._isPointInArea(vm, chartArea)) {
+ ctx.strokeStyle = vm.borderColor || defaultColor;
+ ctx.lineWidth = valueOrDefault$2(vm.borderWidth, globalDefaults.elements.point.borderWidth);
+ ctx.fillStyle = vm.backgroundColor || defaultColor;
+ helpers$1.canvas.drawPoint(ctx, pointStyle, radius, x, y, rotation);
+ }
+ }
+});
+
+var defaultColor$2 = core_defaults.global.defaultColor;
+
+core_defaults._set('global', {
+ elements: {
+ rectangle: {
+ backgroundColor: defaultColor$2,
+ borderColor: defaultColor$2,
+ borderSkipped: 'bottom',
+ borderWidth: 0
+ }
+ }
+});
+
+function isVertical(vm) {
+ return vm && vm.width !== undefined;
+}
+
+/**
+ * Helper function to get the bounds of the bar regardless of the orientation
+ * @param bar {Chart.Element.Rectangle} the bar
+ * @return {Bounds} bounds of the bar
+ * @private
+ */
+function getBarBounds(vm) {
+ var x1, x2, y1, y2, half;
+
+ if (isVertical(vm)) {
+ half = vm.width / 2;
+ x1 = vm.x - half;
+ x2 = vm.x + half;
+ y1 = Math.min(vm.y, vm.base);
+ y2 = Math.max(vm.y, vm.base);
+ } else {
+ half = vm.height / 2;
+ x1 = Math.min(vm.x, vm.base);
+ x2 = Math.max(vm.x, vm.base);
+ y1 = vm.y - half;
+ y2 = vm.y + half;
+ }
+
+ return {
+ left: x1,
+ top: y1,
+ right: x2,
+ bottom: y2
+ };
+}
+
+function swap(orig, v1, v2) {
+ return orig === v1 ? v2 : orig === v2 ? v1 : orig;
+}
+
+function parseBorderSkipped(vm) {
+ var edge = vm.borderSkipped;
+ var res = {};
+
+ if (!edge) {
+ return res;
+ }
+
+ if (vm.horizontal) {
+ if (vm.base > vm.x) {
+ edge = swap(edge, 'left', 'right');
+ }
+ } else if (vm.base < vm.y) {
+ edge = swap(edge, 'bottom', 'top');
+ }
+
+ res[edge] = true;
+ return res;
+}
+
+function parseBorderWidth(vm, maxW, maxH) {
+ var value = vm.borderWidth;
+ var skip = parseBorderSkipped(vm);
+ var t, r, b, l;
+
+ if (helpers$1.isObject(value)) {
+ t = +value.top || 0;
+ r = +value.right || 0;
+ b = +value.bottom || 0;
+ l = +value.left || 0;
+ } else {
+ t = r = b = l = +value || 0;
+ }
+
+ return {
+ t: skip.top || (t < 0) ? 0 : t > maxH ? maxH : t,
+ r: skip.right || (r < 0) ? 0 : r > maxW ? maxW : r,
+ b: skip.bottom || (b < 0) ? 0 : b > maxH ? maxH : b,
+ l: skip.left || (l < 0) ? 0 : l > maxW ? maxW : l
+ };
+}
+
+function boundingRects(vm) {
+ var bounds = getBarBounds(vm);
+ var width = bounds.right - bounds.left;
+ var height = bounds.bottom - bounds.top;
+ var border = parseBorderWidth(vm, width / 2, height / 2);
+
+ return {
+ outer: {
+ x: bounds.left,
+ y: bounds.top,
+ w: width,
+ h: height
+ },
+ inner: {
+ x: bounds.left + border.l,
+ y: bounds.top + border.t,
+ w: width - border.l - border.r,
+ h: height - border.t - border.b
+ }
+ };
+}
+
+function inRange(vm, x, y) {
+ var skipX = x === null;
+ var skipY = y === null;
+ var bounds = !vm || (skipX && skipY) ? false : getBarBounds(vm);
+
+ return bounds
+ && (skipX || x >= bounds.left && x <= bounds.right)
+ && (skipY || y >= bounds.top && y <= bounds.bottom);
+}
+
+var element_rectangle = core_element.extend({
+ draw: function() {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
+ var rects = boundingRects(vm);
+ var outer = rects.outer;
+ var inner = rects.inner;
+
+ ctx.fillStyle = vm.backgroundColor;
+ ctx.fillRect(outer.x, outer.y, outer.w, outer.h);
+
+ if (outer.w === inner.w && outer.h === inner.h) {
+ return;
+ }
+
+ ctx.save();
+ ctx.beginPath();
+ ctx.rect(outer.x, outer.y, outer.w, outer.h);
+ ctx.clip();
+ ctx.fillStyle = vm.borderColor;
+ ctx.rect(inner.x, inner.y, inner.w, inner.h);
+ ctx.fill('evenodd');
+ ctx.restore();
+ },
+
+ height: function() {
+ var vm = this._view;
+ return vm.base - vm.y;
+ },
+
+ inRange: function(mouseX, mouseY) {
+ return inRange(this._view, mouseX, mouseY);
+ },
+
+ inLabelRange: function(mouseX, mouseY) {
+ var vm = this._view;
+ return isVertical(vm)
+ ? inRange(vm, mouseX, null)
+ : inRange(vm, null, mouseY);
+ },
+
+ inXRange: function(mouseX) {
+ return inRange(this._view, mouseX, null);
+ },
+
+ inYRange: function(mouseY) {
+ return inRange(this._view, null, mouseY);
+ },
+
+ getCenterPoint: function() {
+ var vm = this._view;
+ var x, y;
+ if (isVertical(vm)) {
+ x = vm.x;
+ y = (vm.y + vm.base) / 2;
+ } else {
+ x = (vm.x + vm.base) / 2;
+ y = vm.y;
+ }
+
+ return {x: x, y: y};
+ },
+
+ getArea: function() {
+ var vm = this._view;
+
+ return isVertical(vm)
+ ? vm.width * Math.abs(vm.y - vm.base)
+ : vm.height * Math.abs(vm.x - vm.base);
+ },
+
+ tooltipPosition: function() {
+ var vm = this._view;
+ return {
+ x: vm.x,
+ y: vm.y
+ };
+ }
+});
+
+var elements = {};
+var Arc = element_arc;
+var Line = element_line;
+var Point = element_point;
+var Rectangle = element_rectangle;
+elements.Arc = Arc;
+elements.Line = Line;
+elements.Point = Point;
+elements.Rectangle = Rectangle;
+
+var resolve$1 = helpers$1.options.resolve;
+
+core_defaults._set('bar', {
+ hover: {
+ mode: 'label'
+ },
+
+ scales: {
+ xAxes: [{
+ type: 'category',
+ categoryPercentage: 0.8,
+ barPercentage: 0.9,
+ offset: true,
+ gridLines: {
+ offsetGridLines: true
+ }
+ }],
+
+ yAxes: [{
+ type: 'linear'
+ }]
+ }
+});
+
+/**
+ * Computes the "optimal" sample size to maintain bars equally sized while preventing overlap.
+ * @private
+ */
+function computeMinSampleSize(scale, pixels) {
+ var min = scale.isHorizontal() ? scale.width : scale.height;
+ var ticks = scale.getTicks();
+ var prev, curr, i, ilen;
+
+ for (i = 1, ilen = pixels.length; i < ilen; ++i) {
+ min = Math.min(min, Math.abs(pixels[i] - pixels[i - 1]));
+ }
+
+ for (i = 0, ilen = ticks.length; i < ilen; ++i) {
+ curr = scale.getPixelForTick(i);
+ min = i > 0 ? Math.min(min, curr - prev) : min;
+ prev = curr;
+ }
+
+ return min;
+}
+
+/**
+ * Computes an "ideal" category based on the absolute bar thickness or, if undefined or null,
+ * uses the smallest interval (see computeMinSampleSize) that prevents bar overlapping. This
+ * mode currently always generates bars equally sized (until we introduce scriptable options?).
+ * @private
+ */
+function computeFitCategoryTraits(index, ruler, options) {
+ var thickness = options.barThickness;
+ var count = ruler.stackCount;
+ var curr = ruler.pixels[index];
+ var size, ratio;
+
+ if (helpers$1.isNullOrUndef(thickness)) {
+ size = ruler.min * options.categoryPercentage;
+ ratio = options.barPercentage;
+ } else {
+ // When bar thickness is enforced, category and bar percentages are ignored.
+ // Note(SB): we could add support for relative bar thickness (e.g. barThickness: '50%')
+ // and deprecate barPercentage since this value is ignored when thickness is absolute.
+ size = thickness * count;
+ ratio = 1;
+ }
+
+ return {
+ chunk: size / count,
+ ratio: ratio,
+ start: curr - (size / 2)
+ };
+}
+
+/**
+ * Computes an "optimal" category that globally arranges bars side by side (no gap when
+ * percentage options are 1), based on the previous and following categories. This mode
+ * generates bars with different widths when data are not evenly spaced.
+ * @private
+ */
+function computeFlexCategoryTraits(index, ruler, options) {
+ var pixels = ruler.pixels;
+ var curr = pixels[index];
+ var prev = index > 0 ? pixels[index - 1] : null;
+ var next = index < pixels.length - 1 ? pixels[index + 1] : null;
+ var percent = options.categoryPercentage;
+ var start, size;
+
+ if (prev === null) {
+ // first data: its size is double based on the next point or,
+ // if it's also the last data, we use the scale size.
+ prev = curr - (next === null ? ruler.end - ruler.start : next - curr);
+ }
+
+ if (next === null) {
+ // last data: its size is also double based on the previous point.
+ next = curr + curr - prev;
+ }
+
+ start = curr - (curr - Math.min(prev, next)) / 2 * percent;
+ size = Math.abs(next - prev) / 2 * percent;
+
+ return {
+ chunk: size / ruler.stackCount,
+ ratio: options.barPercentage,
+ start: start
+ };
+}
+
+var controller_bar = core_datasetController.extend({
+
+ dataElementType: elements.Rectangle,
+
+ initialize: function() {
+ var me = this;
+ var meta;
+
+ core_datasetController.prototype.initialize.apply(me, arguments);
+
+ meta = me.getMeta();
+ meta.stack = me.getDataset().stack;
+ meta.bar = true;
+ },
+
+ update: function(reset) {
+ var me = this;
+ var rects = me.getMeta().data;
+ var i, ilen;
+
+ me._ruler = me.getRuler();
+
+ for (i = 0, ilen = rects.length; i < ilen; ++i) {
+ me.updateElement(rects[i], i, reset);
+ }
+ },
+
+ updateElement: function(rectangle, index, reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var dataset = me.getDataset();
+ var options = me._resolveElementOptions(rectangle, index);
+
+ rectangle._xScale = me.getScaleForId(meta.xAxisID);
+ rectangle._yScale = me.getScaleForId(meta.yAxisID);
+ rectangle._datasetIndex = me.index;
+ rectangle._index = index;
+ rectangle._model = {
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderSkipped: options.borderSkipped,
+ borderWidth: options.borderWidth,
+ datasetLabel: dataset.label,
+ label: me.chart.data.labels[index]
+ };
+
+ me._updateElementGeometry(rectangle, index, reset);
+
+ rectangle.pivot();
+ },
+
+ /**
+ * @private
+ */
+ _updateElementGeometry: function(rectangle, index, reset) {
+ var me = this;
+ var model = rectangle._model;
+ var vscale = me._getValueScale();
+ var base = vscale.getBasePixel();
+ var horizontal = vscale.isHorizontal();
+ var ruler = me._ruler || me.getRuler();
+ var vpixels = me.calculateBarValuePixels(me.index, index);
+ var ipixels = me.calculateBarIndexPixels(me.index, index, ruler);
+
+ model.horizontal = horizontal;
+ model.base = reset ? base : vpixels.base;
+ model.x = horizontal ? reset ? base : vpixels.head : ipixels.center;
+ model.y = horizontal ? ipixels.center : reset ? base : vpixels.head;
+ model.height = horizontal ? ipixels.size : undefined;
+ model.width = horizontal ? undefined : ipixels.size;
+ },
+
+ /**
+ * Returns the stacks based on groups and bar visibility.
+ * @param {number} [last] - The dataset index
+ * @returns {string[]} The list of stack IDs
+ * @private
+ */
+ _getStacks: function(last) {
+ var me = this;
+ var chart = me.chart;
+ var scale = me._getIndexScale();
+ var stacked = scale.options.stacked;
+ var ilen = last === undefined ? chart.data.datasets.length : last + 1;
+ var stacks = [];
+ var i, meta;
+
+ for (i = 0; i < ilen; ++i) {
+ meta = chart.getDatasetMeta(i);
+ if (meta.bar && chart.isDatasetVisible(i) &&
+ (stacked === false ||
+ (stacked === true && stacks.indexOf(meta.stack) === -1) ||
+ (stacked === undefined && (meta.stack === undefined || stacks.indexOf(meta.stack) === -1)))) {
+ stacks.push(meta.stack);
+ }
+ }
+
+ return stacks;
+ },
+
+ /**
+ * Returns the effective number of stacks based on groups and bar visibility.
+ * @private
+ */
+ getStackCount: function() {
+ return this._getStacks().length;
+ },
+
+ /**
+ * Returns the stack index for the given dataset based on groups and bar visibility.
+ * @param {number} [datasetIndex] - The dataset index
+ * @param {string} [name] - The stack name to find
+ * @returns {number} The stack index
+ * @private
+ */
+ getStackIndex: function(datasetIndex, name) {
+ var stacks = this._getStacks(datasetIndex);
+ var index = (name !== undefined)
+ ? stacks.indexOf(name)
+ : -1; // indexOf returns -1 if element is not present
+
+ return (index === -1)
+ ? stacks.length - 1
+ : index;
+ },
+
+ /**
+ * @private
+ */
+ getRuler: function() {
+ var me = this;
+ var scale = me._getIndexScale();
+ var stackCount = me.getStackCount();
+ var datasetIndex = me.index;
+ var isHorizontal = scale.isHorizontal();
+ var start = isHorizontal ? scale.left : scale.top;
+ var end = start + (isHorizontal ? scale.width : scale.height);
+ var pixels = [];
+ var i, ilen, min;
+
+ for (i = 0, ilen = me.getMeta().data.length; i < ilen; ++i) {
+ pixels.push(scale.getPixelForValue(null, i, datasetIndex));
+ }
+
+ min = helpers$1.isNullOrUndef(scale.options.barThickness)
+ ? computeMinSampleSize(scale, pixels)
+ : -1;
+
+ return {
+ min: min,
+ pixels: pixels,
+ start: start,
+ end: end,
+ stackCount: stackCount,
+ scale: scale
+ };
+ },
+
+ /**
+ * Note: pixel values are not clamped to the scale area.
+ * @private
+ */
+ calculateBarValuePixels: function(datasetIndex, index) {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var scale = me._getValueScale();
+ var isHorizontal = scale.isHorizontal();
+ var datasets = chart.data.datasets;
+ var value = +scale.getRightValue(datasets[datasetIndex].data[index]);
+ var minBarLength = scale.options.minBarLength;
+ var stacked = scale.options.stacked;
+ var stack = meta.stack;
+ var start = 0;
+ var i, imeta, ivalue, base, head, size;
+
+ if (stacked || (stacked === undefined && stack !== undefined)) {
+ for (i = 0; i < datasetIndex; ++i) {
+ imeta = chart.getDatasetMeta(i);
+
+ if (imeta.bar &&
+ imeta.stack === stack &&
+ imeta.controller._getValueScaleId() === scale.id &&
+ chart.isDatasetVisible(i)) {
+
+ ivalue = +scale.getRightValue(datasets[i].data[index]);
+ if ((value < 0 && ivalue < 0) || (value >= 0 && ivalue > 0)) {
+ start += ivalue;
+ }
+ }
+ }
+ }
+
+ base = scale.getPixelForValue(start);
+ head = scale.getPixelForValue(start + value);
+ size = head - base;
+
+ if (minBarLength !== undefined && Math.abs(size) < minBarLength) {
+ size = minBarLength;
+ if (value >= 0 && !isHorizontal || value < 0 && isHorizontal) {
+ head = base - minBarLength;
+ } else {
+ head = base + minBarLength;
+ }
+ }
+
+ return {
+ size: size,
+ base: base,
+ head: head,
+ center: head + size / 2
+ };
+ },
+
+ /**
+ * @private
+ */
+ calculateBarIndexPixels: function(datasetIndex, index, ruler) {
+ var me = this;
+ var options = ruler.scale.options;
+ var range = options.barThickness === 'flex'
+ ? computeFlexCategoryTraits(index, ruler, options)
+ : computeFitCategoryTraits(index, ruler, options);
+
+ var stackIndex = me.getStackIndex(datasetIndex, me.getMeta().stack);
+ var center = range.start + (range.chunk * stackIndex) + (range.chunk / 2);
+ var size = Math.min(
+ helpers$1.valueOrDefault(options.maxBarThickness, Infinity),
+ range.chunk * range.ratio);
+
+ return {
+ base: center - size / 2,
+ head: center + size / 2,
+ center: center,
+ size: size
+ };
+ },
+
+ draw: function() {
+ var me = this;
+ var chart = me.chart;
+ var scale = me._getValueScale();
+ var rects = me.getMeta().data;
+ var dataset = me.getDataset();
+ var ilen = rects.length;
+ var i = 0;
+
+ helpers$1.canvas.clipArea(chart.ctx, chart.chartArea);
+
+ for (; i < ilen; ++i) {
+ if (!isNaN(scale.getRightValue(dataset.data[i]))) {
+ rects[i].draw();
+ }
+ }
+
+ helpers$1.canvas.unclipArea(chart.ctx);
+ },
+
+ /**
+ * @private
+ */
+ _resolveElementOptions: function(rectangle, index) {
+ var me = this;
+ var chart = me.chart;
+ var datasets = chart.data.datasets;
+ var dataset = datasets[me.index];
+ var custom = rectangle.custom || {};
+ var options = chart.options.elements.rectangle;
+ var values = {};
+ var i, ilen, key;
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ var keys = [
+ 'backgroundColor',
+ 'borderColor',
+ 'borderSkipped',
+ 'borderWidth'
+ ];
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$1([
+ custom[key],
+ dataset[key],
+ options[key]
+ ], context, index);
+ }
+
+ return values;
+ }
+});
+
+var valueOrDefault$3 = helpers$1.valueOrDefault;
+var resolve$2 = helpers$1.options.resolve;
+
+core_defaults._set('bubble', {
+ hover: {
+ mode: 'single'
+ },
+
+ scales: {
+ xAxes: [{
+ type: 'linear', // bubble should probably use a linear scale by default
+ position: 'bottom',
+ id: 'x-axis-0' // need an ID so datasets can reference the scale
+ }],
+ yAxes: [{
+ type: 'linear',
+ position: 'left',
+ id: 'y-axis-0'
+ }]
+ },
+
+ tooltips: {
+ callbacks: {
+ title: function() {
+ // Title doesn't make sense for scatter since we format the data as a point
+ return '';
+ },
+ label: function(item, data) {
+ var datasetLabel = data.datasets[item.datasetIndex].label || '';
+ var dataPoint = data.datasets[item.datasetIndex].data[item.index];
+ return datasetLabel + ': (' + item.xLabel + ', ' + item.yLabel + ', ' + dataPoint.r + ')';
+ }
+ }
+ }
+});
+
+var controller_bubble = core_datasetController.extend({
+ /**
+ * @protected
+ */
+ dataElementType: elements.Point,
+
+ /**
+ * @protected
+ */
+ update: function(reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var points = meta.data;
+
+ // Update Points
+ helpers$1.each(points, function(point, index) {
+ me.updateElement(point, index, reset);
+ });
+ },
+
+ /**
+ * @protected
+ */
+ updateElement: function(point, index, reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var custom = point.custom || {};
+ var xScale = me.getScaleForId(meta.xAxisID);
+ var yScale = me.getScaleForId(meta.yAxisID);
+ var options = me._resolveElementOptions(point, index);
+ var data = me.getDataset().data[index];
+ var dsIndex = me.index;
+
+ var x = reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex);
+ var y = reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex);
+
+ point._xScale = xScale;
+ point._yScale = yScale;
+ point._options = options;
+ point._datasetIndex = dsIndex;
+ point._index = index;
+ point._model = {
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ hitRadius: options.hitRadius,
+ pointStyle: options.pointStyle,
+ rotation: options.rotation,
+ radius: reset ? 0 : options.radius,
+ skip: custom.skip || isNaN(x) || isNaN(y),
+ x: x,
+ y: y,
+ };
+
+ point.pivot();
+ },
+
+ /**
+ * @protected
+ */
+ setHoverStyle: function(point) {
+ var model = point._model;
+ var options = point._options;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ point.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ radius: model.radius
+ };
+
+ model.backgroundColor = valueOrDefault$3(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault$3(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault$3(options.hoverBorderWidth, options.borderWidth);
+ model.radius = options.radius + options.hoverRadius;
+ },
+
+ /**
+ * @private
+ */
+ _resolveElementOptions: function(point, index) {
+ var me = this;
+ var chart = me.chart;
+ var datasets = chart.data.datasets;
+ var dataset = datasets[me.index];
+ var custom = point.custom || {};
+ var options = chart.options.elements.point;
+ var data = dataset.data[index];
+ var values = {};
+ var i, ilen, key;
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ var keys = [
+ 'backgroundColor',
+ 'borderColor',
+ 'borderWidth',
+ 'hoverBackgroundColor',
+ 'hoverBorderColor',
+ 'hoverBorderWidth',
+ 'hoverRadius',
+ 'hitRadius',
+ 'pointStyle',
+ 'rotation'
+ ];
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$2([
+ custom[key],
+ dataset[key],
+ options[key]
+ ], context, index);
+ }
+
+ // Custom radius resolution
+ values.radius = resolve$2([
+ custom.radius,
+ data ? data.r : undefined,
+ dataset.radius,
+ options.radius
+ ], context, index);
+
+ return values;
+ }
+});
+
+var resolve$3 = helpers$1.options.resolve;
+var valueOrDefault$4 = helpers$1.valueOrDefault;
+
+core_defaults._set('doughnut', {
+ animation: {
+ // Boolean - Whether we animate the rotation of the Doughnut
+ animateRotate: true,
+ // Boolean - Whether we animate scaling the Doughnut from the centre
+ animateScale: false
+ },
+ hover: {
+ mode: 'single'
+ },
+ legendCallback: function(chart) {
+ var text = [];
+ text.push('<ul class="' + chart.id + '-legend">');
+
+ var data = chart.data;
+ var datasets = data.datasets;
+ var labels = data.labels;
+
+ if (datasets.length) {
+ for (var i = 0; i < datasets[0].data.length; ++i) {
+ text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
+ if (labels[i]) {
+ text.push(labels[i]);
+ }
+ text.push('</li>');
+ }
+ }
+
+ text.push('</ul>');
+ return text.join('');
+ },
+ legend: {
+ labels: {
+ generateLabels: function(chart) {
+ var data = chart.data;
+ if (data.labels.length && data.datasets.length) {
+ return data.labels.map(function(label, i) {
+ var meta = chart.getDatasetMeta(0);
+ var ds = data.datasets[0];
+ var arc = meta.data[i];
+ var custom = arc && arc.custom || {};
+ var arcOpts = chart.options.elements.arc;
+ var fill = resolve$3([custom.backgroundColor, ds.backgroundColor, arcOpts.backgroundColor], undefined, i);
+ var stroke = resolve$3([custom.borderColor, ds.borderColor, arcOpts.borderColor], undefined, i);
+ var bw = resolve$3([custom.borderWidth, ds.borderWidth, arcOpts.borderWidth], undefined, i);
+
+ return {
+ text: label,
+ fillStyle: fill,
+ strokeStyle: stroke,
+ lineWidth: bw,
+ hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
+
+ // Extra data used for toggling the correct item
+ index: i
+ };
+ });
+ }
+ return [];
+ }
+ },
+
+ onClick: function(e, legendItem) {
+ var index = legendItem.index;
+ var chart = this.chart;
+ var i, ilen, meta;
+
+ for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
+ meta = chart.getDatasetMeta(i);
+ // toggle visibility of index if exists
+ if (meta.data[index]) {
+ meta.data[index].hidden = !meta.data[index].hidden;
+ }
+ }
+
+ chart.update();
+ }
+ },
+
+ // The percentage of the chart that we cut out of the middle.
+ cutoutPercentage: 50,
+
+ // The rotation of the chart, where the first data arc begins.
+ rotation: Math.PI * -0.5,
+
+ // The total circumference of the chart.
+ circumference: Math.PI * 2.0,
+
+ // Need to override these to give a nice default
+ tooltips: {
+ callbacks: {
+ title: function() {
+ return '';
+ },
+ label: function(tooltipItem, data) {
+ var dataLabel = data.labels[tooltipItem.index];
+ var value = ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
+
+ if (helpers$1.isArray(dataLabel)) {
+ // show value on first line of multiline label
+ // need to clone because we are changing the value
+ dataLabel = dataLabel.slice();
+ dataLabel[0] += value;
+ } else {
+ dataLabel += value;
+ }
+
+ return dataLabel;
+ }
+ }
+ }
+});
+
+var controller_doughnut = core_datasetController.extend({
+
+ dataElementType: elements.Arc,
+
+ linkScales: helpers$1.noop,
+
+ // Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly
+ getRingIndex: function(datasetIndex) {
+ var ringIndex = 0;
+
+ for (var j = 0; j < datasetIndex; ++j) {
+ if (this.chart.isDatasetVisible(j)) {
+ ++ringIndex;
+ }
+ }
+
+ return ringIndex;
+ },
+
+ update: function(reset) {
+ var me = this;
+ var chart = me.chart;
+ var chartArea = chart.chartArea;
+ var opts = chart.options;
+ var availableWidth = chartArea.right - chartArea.left;
+ var availableHeight = chartArea.bottom - chartArea.top;
+ var minSize = Math.min(availableWidth, availableHeight);
+ var offset = {x: 0, y: 0};
+ var meta = me.getMeta();
+ var arcs = meta.data;
+ var cutoutPercentage = opts.cutoutPercentage;
+ var circumference = opts.circumference;
+ var chartWeight = me._getRingWeight(me.index);
+ var i, ilen;
+
+ // If the chart's circumference isn't a full circle, calculate minSize as a ratio of the width/height of the arc
+ if (circumference < Math.PI * 2.0) {
+ var startAngle = opts.rotation % (Math.PI * 2.0);
+ startAngle += Math.PI * 2.0 * (startAngle >= Math.PI ? -1 : startAngle < -Math.PI ? 1 : 0);
+ var endAngle = startAngle + circumference;
+ var start = {x: Math.cos(startAngle), y: Math.sin(startAngle)};
+ var end = {x: Math.cos(endAngle), y: Math.sin(endAngle)};
+ var contains0 = (startAngle <= 0 && endAngle >= 0) || (startAngle <= Math.PI * 2.0 && Math.PI * 2.0 <= endAngle);
+ var contains90 = (startAngle <= Math.PI * 0.5 && Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 2.5 && Math.PI * 2.5 <= endAngle);
+ var contains180 = (startAngle <= -Math.PI && -Math.PI <= endAngle) || (startAngle <= Math.PI && Math.PI <= endAngle);
+ var contains270 = (startAngle <= -Math.PI * 0.5 && -Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 1.5 && Math.PI * 1.5 <= endAngle);
+ var cutout = cutoutPercentage / 100.0;
+ var min = {x: contains180 ? -1 : Math.min(start.x * (start.x < 0 ? 1 : cutout), end.x * (end.x < 0 ? 1 : cutout)), y: contains270 ? -1 : Math.min(start.y * (start.y < 0 ? 1 : cutout), end.y * (end.y < 0 ? 1 : cutout))};
+ var max = {x: contains0 ? 1 : Math.max(start.x * (start.x > 0 ? 1 : cutout), end.x * (end.x > 0 ? 1 : cutout)), y: contains90 ? 1 : Math.max(start.y * (start.y > 0 ? 1 : cutout), end.y * (end.y > 0 ? 1 : cutout))};
+ var size = {width: (max.x - min.x) * 0.5, height: (max.y - min.y) * 0.5};
+ minSize = Math.min(availableWidth / size.width, availableHeight / size.height);
+ offset = {x: (max.x + min.x) * -0.5, y: (max.y + min.y) * -0.5};
+ }
+
+ for (i = 0, ilen = arcs.length; i < ilen; ++i) {
+ arcs[i]._options = me._resolveElementOptions(arcs[i], i);
+ }
+
+ chart.borderWidth = me.getMaxBorderWidth();
+ chart.outerRadius = Math.max((minSize - chart.borderWidth) / 2, 0);
+ chart.innerRadius = Math.max(cutoutPercentage ? (chart.outerRadius / 100) * (cutoutPercentage) : 0, 0);
+ chart.radiusLength = (chart.outerRadius - chart.innerRadius) / (me._getVisibleDatasetWeightTotal() || 1);
+ chart.offsetX = offset.x * chart.outerRadius;
+ chart.offsetY = offset.y * chart.outerRadius;
+
+ meta.total = me.calculateTotal();
+
+ me.outerRadius = chart.outerRadius - chart.radiusLength * me._getRingWeightOffset(me.index);
+ me.innerRadius = Math.max(me.outerRadius - chart.radiusLength * chartWeight, 0);
+
+ for (i = 0, ilen = arcs.length; i < ilen; ++i) {
+ me.updateElement(arcs[i], i, reset);
+ }
+ },
+
+ updateElement: function(arc, index, reset) {
+ var me = this;
+ var chart = me.chart;
+ var chartArea = chart.chartArea;
+ var opts = chart.options;
+ var animationOpts = opts.animation;
+ var centerX = (chartArea.left + chartArea.right) / 2;
+ var centerY = (chartArea.top + chartArea.bottom) / 2;
+ var startAngle = opts.rotation; // non reset case handled later
+ var endAngle = opts.rotation; // non reset case handled later
+ var dataset = me.getDataset();
+ var circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / (2.0 * Math.PI));
+ var innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius;
+ var outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius;
+ var options = arc._options || {};
+
+ helpers$1.extend(arc, {
+ // Utility
+ _datasetIndex: me.index,
+ _index: index,
+
+ // Desired view properties
+ _model: {
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ borderAlign: options.borderAlign,
+ x: centerX + chart.offsetX,
+ y: centerY + chart.offsetY,
+ startAngle: startAngle,
+ endAngle: endAngle,
+ circumference: circumference,
+ outerRadius: outerRadius,
+ innerRadius: innerRadius,
+ label: helpers$1.valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index])
+ }
+ });
+
+ var model = arc._model;
+
+ // Set correct angles if not resetting
+ if (!reset || !animationOpts.animateRotate) {
+ if (index === 0) {
+ model.startAngle = opts.rotation;
+ } else {
+ model.startAngle = me.getMeta().data[index - 1]._model.endAngle;
+ }
+
+ model.endAngle = model.startAngle + model.circumference;
+ }
+
+ arc.pivot();
+ },
+
+ calculateTotal: function() {
+ var dataset = this.getDataset();
+ var meta = this.getMeta();
+ var total = 0;
+ var value;
+
+ helpers$1.each(meta.data, function(element, index) {
+ value = dataset.data[index];
+ if (!isNaN(value) && !element.hidden) {
+ total += Math.abs(value);
+ }
+ });
+
+ /* if (total === 0) {
+ total = NaN;
+ }*/
+
+ return total;
+ },
+
+ calculateCircumference: function(value) {
+ var total = this.getMeta().total;
+ if (total > 0 && !isNaN(value)) {
+ return (Math.PI * 2.0) * (Math.abs(value) / total);
+ }
+ return 0;
+ },
+
+ // gets the max border or hover width to properly scale pie charts
+ getMaxBorderWidth: function(arcs) {
+ var me = this;
+ var max = 0;
+ var chart = me.chart;
+ var i, ilen, meta, arc, controller, options, borderWidth, hoverWidth;
+
+ if (!arcs) {
+ // Find the outmost visible dataset
+ for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) {
+ if (chart.isDatasetVisible(i)) {
+ meta = chart.getDatasetMeta(i);
+ arcs = meta.data;
+ if (i !== me.index) {
+ controller = meta.controller;
+ }
+ break;
+ }
+ }
+ }
+
+ if (!arcs) {
+ return 0;
+ }
+
+ for (i = 0, ilen = arcs.length; i < ilen; ++i) {
+ arc = arcs[i];
+ options = controller ? controller._resolveElementOptions(arc, i) : arc._options;
+ if (options.borderAlign !== 'inner') {
+ borderWidth = options.borderWidth;
+ hoverWidth = options.hoverBorderWidth;
+
+ max = borderWidth > max ? borderWidth : max;
+ max = hoverWidth > max ? hoverWidth : max;
+ }
+ }
+ return max;
+ },
+
+ /**
+ * @protected
+ */
+ setHoverStyle: function(arc) {
+ var model = arc._model;
+ var options = arc._options;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ arc.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ };
+
+ model.backgroundColor = valueOrDefault$4(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault$4(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault$4(options.hoverBorderWidth, options.borderWidth);
+ },
+
+ /**
+ * @private
+ */
+ _resolveElementOptions: function(arc, index) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = me.getDataset();
+ var custom = arc.custom || {};
+ var options = chart.options.elements.arc;
+ var values = {};
+ var i, ilen, key;
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ var keys = [
+ 'backgroundColor',
+ 'borderColor',
+ 'borderWidth',
+ 'borderAlign',
+ 'hoverBackgroundColor',
+ 'hoverBorderColor',
+ 'hoverBorderWidth',
+ ];
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$3([
+ custom[key],
+ dataset[key],
+ options[key]
+ ], context, index);
+ }
+
+ return values;
+ },
+
+ /**
+ * Get radius length offset of the dataset in relation to the visible datasets weights. This allows determining the inner and outer radius correctly
+ * @private
+ */
+ _getRingWeightOffset: function(datasetIndex) {
+ var ringWeightOffset = 0;
+
+ for (var i = 0; i < datasetIndex; ++i) {
+ if (this.chart.isDatasetVisible(i)) {
+ ringWeightOffset += this._getRingWeight(i);
+ }
+ }
+
+ return ringWeightOffset;
+ },
+
+ /**
+ * @private
+ */
+ _getRingWeight: function(dataSetIndex) {
+ return Math.max(valueOrDefault$4(this.chart.data.datasets[dataSetIndex].weight, 1), 0);
+ },
+
+ /**
+ * Returns the sum of all visibile data set weights. This value can be 0.
+ * @private
+ */
+ _getVisibleDatasetWeightTotal: function() {
+ return this._getRingWeightOffset(this.chart.data.datasets.length);
+ }
+});
+
+core_defaults._set('horizontalBar', {
+ hover: {
+ mode: 'index',
+ axis: 'y'
+ },
+
+ scales: {
+ xAxes: [{
+ type: 'linear',
+ position: 'bottom'
+ }],
+
+ yAxes: [{
+ type: 'category',
+ position: 'left',
+ categoryPercentage: 0.8,
+ barPercentage: 0.9,
+ offset: true,
+ gridLines: {
+ offsetGridLines: true
+ }
+ }]
+ },
+
+ elements: {
+ rectangle: {
+ borderSkipped: 'left'
+ }
+ },
+
+ tooltips: {
+ mode: 'index',
+ axis: 'y'
+ }
+});
+
+var controller_horizontalBar = controller_bar.extend({
+ /**
+ * @private
+ */
+ _getValueScaleId: function() {
+ return this.getMeta().xAxisID;
+ },
+
+ /**
+ * @private
+ */
+ _getIndexScaleId: function() {
+ return this.getMeta().yAxisID;
+ }
+});
+
+var valueOrDefault$5 = helpers$1.valueOrDefault;
+var resolve$4 = helpers$1.options.resolve;
+var isPointInArea = helpers$1.canvas._isPointInArea;
+
+core_defaults._set('line', {
+ showLines: true,
+ spanGaps: false,
+
+ hover: {
+ mode: 'label'
+ },
+
+ scales: {
+ xAxes: [{
+ type: 'category',
+ id: 'x-axis-0'
+ }],
+ yAxes: [{
+ type: 'linear',
+ id: 'y-axis-0'
+ }]
+ }
+});
+
+function lineEnabled(dataset, options) {
+ return valueOrDefault$5(dataset.showLine, options.showLines);
+}
+
+var controller_line = core_datasetController.extend({
+
+ datasetElementType: elements.Line,
+
+ dataElementType: elements.Point,
+
+ update: function(reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var line = meta.dataset;
+ var points = meta.data || [];
+ var scale = me.getScaleForId(meta.yAxisID);
+ var dataset = me.getDataset();
+ var showLine = lineEnabled(dataset, me.chart.options);
+ var i, ilen;
+
+ // Update Line
+ if (showLine) {
+ // Compatibility: If the properties are defined with only the old name, use those values
+ if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
+ dataset.lineTension = dataset.tension;
+ }
+
+ // Utility
+ line._scale = scale;
+ line._datasetIndex = me.index;
+ // Data
+ line._children = points;
+ // Model
+ line._model = me._resolveLineOptions(line);
+
+ line.pivot();
+ }
+
+ // Update Points
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ me.updateElement(points[i], i, reset);
+ }
+
+ if (showLine && line._model.tension !== 0) {
+ me.updateBezierControlPoints();
+ }
+
+ // Now pivot the point for animation
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ points[i].pivot();
+ }
+ },
+
+ updateElement: function(point, index, reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var custom = point.custom || {};
+ var dataset = me.getDataset();
+ var datasetIndex = me.index;
+ var value = dataset.data[index];
+ var yScale = me.getScaleForId(meta.yAxisID);
+ var xScale = me.getScaleForId(meta.xAxisID);
+ var lineModel = meta.dataset._model;
+ var x, y;
+
+ var options = me._resolvePointOptions(point, index);
+
+ x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex);
+ y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex);
+
+ // Utility
+ point._xScale = xScale;
+ point._yScale = yScale;
+ point._options = options;
+ point._datasetIndex = datasetIndex;
+ point._index = index;
+
+ // Desired view properties
+ point._model = {
+ x: x,
+ y: y,
+ skip: custom.skip || isNaN(x) || isNaN(y),
+ // Appearance
+ radius: options.radius,
+ pointStyle: options.pointStyle,
+ rotation: options.rotation,
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ tension: valueOrDefault$5(custom.tension, lineModel ? lineModel.tension : 0),
+ steppedLine: lineModel ? lineModel.steppedLine : false,
+ // Tooltip
+ hitRadius: options.hitRadius
+ };
+ },
+
+ /**
+ * @private
+ */
+ _resolvePointOptions: function(element, index) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = chart.data.datasets[me.index];
+ var custom = element.custom || {};
+ var options = chart.options.elements.point;
+ var values = {};
+ var i, ilen, key;
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ var ELEMENT_OPTIONS = {
+ backgroundColor: 'pointBackgroundColor',
+ borderColor: 'pointBorderColor',
+ borderWidth: 'pointBorderWidth',
+ hitRadius: 'pointHitRadius',
+ hoverBackgroundColor: 'pointHoverBackgroundColor',
+ hoverBorderColor: 'pointHoverBorderColor',
+ hoverBorderWidth: 'pointHoverBorderWidth',
+ hoverRadius: 'pointHoverRadius',
+ pointStyle: 'pointStyle',
+ radius: 'pointRadius',
+ rotation: 'pointRotation'
+ };
+ var keys = Object.keys(ELEMENT_OPTIONS);
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$4([
+ custom[key],
+ dataset[ELEMENT_OPTIONS[key]],
+ dataset[key],
+ options[key]
+ ], context, index);
+ }
+
+ return values;
+ },
+
+ /**
+ * @private
+ */
+ _resolveLineOptions: function(element) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = chart.data.datasets[me.index];
+ var custom = element.custom || {};
+ var options = chart.options;
+ var elementOptions = options.elements.line;
+ var values = {};
+ var i, ilen, key;
+
+ var keys = [
+ 'backgroundColor',
+ 'borderWidth',
+ 'borderColor',
+ 'borderCapStyle',
+ 'borderDash',
+ 'borderDashOffset',
+ 'borderJoinStyle',
+ 'fill',
+ 'cubicInterpolationMode'
+ ];
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$4([
+ custom[key],
+ dataset[key],
+ elementOptions[key]
+ ]);
+ }
+
+ // The default behavior of lines is to break at null values, according
+ // to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158
+ // This option gives lines the ability to span gaps
+ values.spanGaps = valueOrDefault$5(dataset.spanGaps, options.spanGaps);
+ values.tension = valueOrDefault$5(dataset.lineTension, elementOptions.tension);
+ values.steppedLine = resolve$4([custom.steppedLine, dataset.steppedLine, elementOptions.stepped]);
+
+ return values;
+ },
+
+ calculatePointY: function(value, index, datasetIndex) {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var yScale = me.getScaleForId(meta.yAxisID);
+ var sumPos = 0;
+ var sumNeg = 0;
+ var i, ds, dsMeta;
+
+ if (yScale.options.stacked) {
+ for (i = 0; i < datasetIndex; i++) {
+ ds = chart.data.datasets[i];
+ dsMeta = chart.getDatasetMeta(i);
+ if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id && chart.isDatasetVisible(i)) {
+ var stackedRightValue = Number(yScale.getRightValue(ds.data[index]));
+ if (stackedRightValue < 0) {
+ sumNeg += stackedRightValue || 0;
+ } else {
+ sumPos += stackedRightValue || 0;
+ }
+ }
+ }
+
+ var rightValue = Number(yScale.getRightValue(value));
+ if (rightValue < 0) {
+ return yScale.getPixelForValue(sumNeg + rightValue);
+ }
+ return yScale.getPixelForValue(sumPos + rightValue);
+ }
+
+ return yScale.getPixelForValue(value);
+ },
+
+ updateBezierControlPoints: function() {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var lineModel = meta.dataset._model;
+ var area = chart.chartArea;
+ var points = meta.data || [];
+ var i, ilen, model, controlPoints;
+
+ // Only consider points that are drawn in case the spanGaps option is used
+ if (lineModel.spanGaps) {
+ points = points.filter(function(pt) {
+ return !pt._model.skip;
+ });
+ }
+
+ function capControlPoint(pt, min, max) {
+ return Math.max(Math.min(pt, max), min);
+ }
+
+ if (lineModel.cubicInterpolationMode === 'monotone') {
+ helpers$1.splineCurveMonotone(points);
+ } else {
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ model = points[i]._model;
+ controlPoints = helpers$1.splineCurve(
+ helpers$1.previousItem(points, i)._model,
+ model,
+ helpers$1.nextItem(points, i)._model,
+ lineModel.tension
+ );
+ model.controlPointPreviousX = controlPoints.previous.x;
+ model.controlPointPreviousY = controlPoints.previous.y;
+ model.controlPointNextX = controlPoints.next.x;
+ model.controlPointNextY = controlPoints.next.y;
+ }
+ }
+
+ if (chart.options.elements.line.capBezierPoints) {
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ model = points[i]._model;
+ if (isPointInArea(model, area)) {
+ if (i > 0 && isPointInArea(points[i - 1]._model, area)) {
+ model.controlPointPreviousX = capControlPoint(model.controlPointPreviousX, area.left, area.right);
+ model.controlPointPreviousY = capControlPoint(model.controlPointPreviousY, area.top, area.bottom);
+ }
+ if (i < points.length - 1 && isPointInArea(points[i + 1]._model, area)) {
+ model.controlPointNextX = capControlPoint(model.controlPointNextX, area.left, area.right);
+ model.controlPointNextY = capControlPoint(model.controlPointNextY, area.top, area.bottom);
+ }
+ }
+ }
+ }
+ },
+
+ draw: function() {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var points = meta.data || [];
+ var area = chart.chartArea;
+ var ilen = points.length;
+ var halfBorderWidth;
+ var i = 0;
+
+ if (lineEnabled(me.getDataset(), chart.options)) {
+ halfBorderWidth = (meta.dataset._model.borderWidth || 0) / 2;
+
+ helpers$1.canvas.clipArea(chart.ctx, {
+ left: area.left,
+ right: area.right,
+ top: area.top - halfBorderWidth,
+ bottom: area.bottom + halfBorderWidth
+ });
+
+ meta.dataset.draw();
+
+ helpers$1.canvas.unclipArea(chart.ctx);
+ }
+
+ // Draw the points
+ for (; i < ilen; ++i) {
+ points[i].draw(area);
+ }
+ },
+
+ /**
+ * @protected
+ */
+ setHoverStyle: function(point) {
+ var model = point._model;
+ var options = point._options;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ point.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ radius: model.radius
+ };
+
+ model.backgroundColor = valueOrDefault$5(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault$5(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault$5(options.hoverBorderWidth, options.borderWidth);
+ model.radius = valueOrDefault$5(options.hoverRadius, options.radius);
+ },
+});
+
+var resolve$5 = helpers$1.options.resolve;
+
+core_defaults._set('polarArea', {
+ scale: {
+ type: 'radialLinear',
+ angleLines: {
+ display: false
+ },
+ gridLines: {
+ circular: true
+ },
+ pointLabels: {
+ display: false
+ },
+ ticks: {
+ beginAtZero: true
+ }
+ },
+
+ // Boolean - Whether to animate the rotation of the chart
+ animation: {
+ animateRotate: true,
+ animateScale: true
+ },
+
+ startAngle: -0.5 * Math.PI,
+ legendCallback: function(chart) {
+ var text = [];
+ text.push('<ul class="' + chart.id + '-legend">');
+
+ var data = chart.data;
+ var datasets = data.datasets;
+ var labels = data.labels;
+
+ if (datasets.length) {
+ for (var i = 0; i < datasets[0].data.length; ++i) {
+ text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
+ if (labels[i]) {
+ text.push(labels[i]);
+ }
+ text.push('</li>');
+ }
+ }
+
+ text.push('</ul>');
+ return text.join('');
+ },
+ legend: {
+ labels: {
+ generateLabels: function(chart) {
+ var data = chart.data;
+ if (data.labels.length && data.datasets.length) {
+ return data.labels.map(function(label, i) {
+ var meta = chart.getDatasetMeta(0);
+ var ds = data.datasets[0];
+ var arc = meta.data[i];
+ var custom = arc.custom || {};
+ var arcOpts = chart.options.elements.arc;
+ var fill = resolve$5([custom.backgroundColor, ds.backgroundColor, arcOpts.backgroundColor], undefined, i);
+ var stroke = resolve$5([custom.borderColor, ds.borderColor, arcOpts.borderColor], undefined, i);
+ var bw = resolve$5([custom.borderWidth, ds.borderWidth, arcOpts.borderWidth], undefined, i);
+
+ return {
+ text: label,
+ fillStyle: fill,
+ strokeStyle: stroke,
+ lineWidth: bw,
+ hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
+
+ // Extra data used for toggling the correct item
+ index: i
+ };
+ });
+ }
+ return [];
+ }
+ },
+
+ onClick: function(e, legendItem) {
+ var index = legendItem.index;
+ var chart = this.chart;
+ var i, ilen, meta;
+
+ for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
+ meta = chart.getDatasetMeta(i);
+ meta.data[index].hidden = !meta.data[index].hidden;
+ }
+
+ chart.update();
+ }
+ },
+
+ // Need to override these to give a nice default
+ tooltips: {
+ callbacks: {
+ title: function() {
+ return '';
+ },
+ label: function(item, data) {
+ return data.labels[item.index] + ': ' + item.yLabel;
+ }
+ }
+ }
+});
+
+var controller_polarArea = core_datasetController.extend({
+
+ dataElementType: elements.Arc,
+
+ linkScales: helpers$1.noop,
+
+ update: function(reset) {
+ var me = this;
+ var dataset = me.getDataset();
+ var meta = me.getMeta();
+ var start = me.chart.options.startAngle || 0;
+ var starts = me._starts = [];
+ var angles = me._angles = [];
+ var arcs = meta.data;
+ var i, ilen, angle;
+
+ me._updateRadius();
+
+ meta.count = me.countVisibleElements();
+
+ for (i = 0, ilen = dataset.data.length; i < ilen; i++) {
+ starts[i] = start;
+ angle = me._computeAngle(i);
+ angles[i] = angle;
+ start += angle;
+ }
+
+ for (i = 0, ilen = arcs.length; i < ilen; ++i) {
+ arcs[i]._options = me._resolveElementOptions(arcs[i], i);
+ me.updateElement(arcs[i], i, reset);
+ }
+ },
+
+ /**
+ * @private
+ */
+ _updateRadius: function() {
+ var me = this;
+ var chart = me.chart;
+ var chartArea = chart.chartArea;
+ var opts = chart.options;
+ var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);
+
+ chart.outerRadius = Math.max(minSize / 2, 0);
+ chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0);
+ chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
+
+ me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index);
+ me.innerRadius = me.outerRadius - chart.radiusLength;
+ },
+
+ updateElement: function(arc, index, reset) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = me.getDataset();
+ var opts = chart.options;
+ var animationOpts = opts.animation;
+ var scale = chart.scale;
+ var labels = chart.data.labels;
+
+ var centerX = scale.xCenter;
+ var centerY = scale.yCenter;
+
+ // var negHalfPI = -0.5 * Math.PI;
+ var datasetStartAngle = opts.startAngle;
+ var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
+ var startAngle = me._starts[index];
+ var endAngle = startAngle + (arc.hidden ? 0 : me._angles[index]);
+
+ var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
+ var options = arc._options || {};
+
+ helpers$1.extend(arc, {
+ // Utility
+ _datasetIndex: me.index,
+ _index: index,
+ _scale: scale,
+
+ // Desired view properties
+ _model: {
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ borderAlign: options.borderAlign,
+ x: centerX,
+ y: centerY,
+ innerRadius: 0,
+ outerRadius: reset ? resetRadius : distance,
+ startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle,
+ endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle,
+ label: helpers$1.valueAtIndexOrDefault(labels, index, labels[index])
+ }
+ });
+
+ arc.pivot();
+ },
+
+ countVisibleElements: function() {
+ var dataset = this.getDataset();
+ var meta = this.getMeta();
+ var count = 0;
+
+ helpers$1.each(meta.data, function(element, index) {
+ if (!isNaN(dataset.data[index]) && !element.hidden) {
+ count++;
+ }
+ });
+
+ return count;
+ },
+
+ /**
+ * @protected
+ */
+ setHoverStyle: function(arc) {
+ var model = arc._model;
+ var options = arc._options;
+ var getHoverColor = helpers$1.getHoverColor;
+ var valueOrDefault = helpers$1.valueOrDefault;
+
+ arc.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ };
+
+ model.backgroundColor = valueOrDefault(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault(options.hoverBorderWidth, options.borderWidth);
+ },
+
+ /**
+ * @private
+ */
+ _resolveElementOptions: function(arc, index) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = me.getDataset();
+ var custom = arc.custom || {};
+ var options = chart.options.elements.arc;
+ var values = {};
+ var i, ilen, key;
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ var keys = [
+ 'backgroundColor',
+ 'borderColor',
+ 'borderWidth',
+ 'borderAlign',
+ 'hoverBackgroundColor',
+ 'hoverBorderColor',
+ 'hoverBorderWidth',
+ ];
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$5([
+ custom[key],
+ dataset[key],
+ options[key]
+ ], context, index);
+ }
+
+ return values;
+ },
+
+ /**
+ * @private
+ */
+ _computeAngle: function(index) {
+ var me = this;
+ var count = this.getMeta().count;
+ var dataset = me.getDataset();
+ var meta = me.getMeta();
+
+ if (isNaN(dataset.data[index]) || meta.data[index].hidden) {
+ return 0;
+ }
+
+ // Scriptable options
+ var context = {
+ chart: me.chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ return resolve$5([
+ me.chart.options.elements.arc.angle,
+ (2 * Math.PI) / count
+ ], context, index);
+ }
+});
+
+core_defaults._set('pie', helpers$1.clone(core_defaults.doughnut));
+core_defaults._set('pie', {
+ cutoutPercentage: 0
+});
+
+// Pie charts are Doughnut chart with different defaults
+var controller_pie = controller_doughnut;
+
+var valueOrDefault$6 = helpers$1.valueOrDefault;
+var resolve$6 = helpers$1.options.resolve;
+
+core_defaults._set('radar', {
+ scale: {
+ type: 'radialLinear'
+ },
+ elements: {
+ line: {
+ tension: 0 // no bezier in radar
+ }
+ }
+});
+
+var controller_radar = core_datasetController.extend({
+
+ datasetElementType: elements.Line,
+
+ dataElementType: elements.Point,
+
+ linkScales: helpers$1.noop,
+
+ update: function(reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var line = meta.dataset;
+ var points = meta.data || [];
+ var scale = me.chart.scale;
+ var dataset = me.getDataset();
+ var i, ilen;
+
+ // Compatibility: If the properties are defined with only the old name, use those values
+ if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
+ dataset.lineTension = dataset.tension;
+ }
+
+ // Utility
+ line._scale = scale;
+ line._datasetIndex = me.index;
+ // Data
+ line._children = points;
+ line._loop = true;
+ // Model
+ line._model = me._resolveLineOptions(line);
+
+ line.pivot();
+
+ // Update Points
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ me.updateElement(points[i], i, reset);
+ }
+
+ // Update bezier control points
+ me.updateBezierControlPoints();
+
+ // Now pivot the point for animation
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ points[i].pivot();
+ }
+ },
+
+ updateElement: function(point, index, reset) {
+ var me = this;
+ var custom = point.custom || {};
+ var dataset = me.getDataset();
+ var scale = me.chart.scale;
+ var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]);
+ var options = me._resolvePointOptions(point, index);
+ var lineModel = me.getMeta().dataset._model;
+ var x = reset ? scale.xCenter : pointPosition.x;
+ var y = reset ? scale.yCenter : pointPosition.y;
+
+ // Utility
+ point._scale = scale;
+ point._options = options;
+ point._datasetIndex = me.index;
+ point._index = index;
+
+ // Desired view properties
+ point._model = {
+ x: x, // value not used in dataset scale, but we want a consistent API between scales
+ y: y,
+ skip: custom.skip || isNaN(x) || isNaN(y),
+ // Appearance
+ radius: options.radius,
+ pointStyle: options.pointStyle,
+ rotation: options.rotation,
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ tension: valueOrDefault$6(custom.tension, lineModel ? lineModel.tension : 0),
+
+ // Tooltip
+ hitRadius: options.hitRadius
+ };
+ },
+
+ /**
+ * @private
+ */
+ _resolvePointOptions: function(element, index) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = chart.data.datasets[me.index];
+ var custom = element.custom || {};
+ var options = chart.options.elements.point;
+ var values = {};
+ var i, ilen, key;
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ var ELEMENT_OPTIONS = {
+ backgroundColor: 'pointBackgroundColor',
+ borderColor: 'pointBorderColor',
+ borderWidth: 'pointBorderWidth',
+ hitRadius: 'pointHitRadius',
+ hoverBackgroundColor: 'pointHoverBackgroundColor',
+ hoverBorderColor: 'pointHoverBorderColor',
+ hoverBorderWidth: 'pointHoverBorderWidth',
+ hoverRadius: 'pointHoverRadius',
+ pointStyle: 'pointStyle',
+ radius: 'pointRadius',
+ rotation: 'pointRotation'
+ };
+ var keys = Object.keys(ELEMENT_OPTIONS);
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$6([
+ custom[key],
+ dataset[ELEMENT_OPTIONS[key]],
+ dataset[key],
+ options[key]
+ ], context, index);
+ }
+
+ return values;
+ },
+
+ /**
+ * @private
+ */
+ _resolveLineOptions: function(element) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = chart.data.datasets[me.index];
+ var custom = element.custom || {};
+ var options = chart.options.elements.line;
+ var values = {};
+ var i, ilen, key;
+
+ var keys = [
+ 'backgroundColor',
+ 'borderWidth',
+ 'borderColor',
+ 'borderCapStyle',
+ 'borderDash',
+ 'borderDashOffset',
+ 'borderJoinStyle',
+ 'fill'
+ ];
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$6([
+ custom[key],
+ dataset[key],
+ options[key]
+ ]);
+ }
+
+ values.tension = valueOrDefault$6(dataset.lineTension, options.tension);
+
+ return values;
+ },
+
+ updateBezierControlPoints: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var area = me.chart.chartArea;
+ var points = meta.data || [];
+ var i, ilen, model, controlPoints;
+
+ function capControlPoint(pt, min, max) {
+ return Math.max(Math.min(pt, max), min);
+ }
+
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ model = points[i]._model;
+ controlPoints = helpers$1.splineCurve(
+ helpers$1.previousItem(points, i, true)._model,
+ model,
+ helpers$1.nextItem(points, i, true)._model,
+ model.tension
+ );
+
+ // Prevent the bezier going outside of the bounds of the graph
+ model.controlPointPreviousX = capControlPoint(controlPoints.previous.x, area.left, area.right);
+ model.controlPointPreviousY = capControlPoint(controlPoints.previous.y, area.top, area.bottom);
+ model.controlPointNextX = capControlPoint(controlPoints.next.x, area.left, area.right);
+ model.controlPointNextY = capControlPoint(controlPoints.next.y, area.top, area.bottom);
+ }
+ },
+
+ setHoverStyle: function(point) {
+ var model = point._model;
+ var options = point._options;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ point.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ radius: model.radius
+ };
+
+ model.backgroundColor = valueOrDefault$6(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault$6(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault$6(options.hoverBorderWidth, options.borderWidth);
+ model.radius = valueOrDefault$6(options.hoverRadius, options.radius);
+ }
+});
+
+core_defaults._set('scatter', {
+ hover: {
+ mode: 'single'
+ },
+
+ scales: {
+ xAxes: [{
+ id: 'x-axis-1', // need an ID so datasets can reference the scale
+ type: 'linear', // scatter should not use a category axis
+ position: 'bottom'
+ }],
+ yAxes: [{
+ id: 'y-axis-1',
+ type: 'linear',
+ position: 'left'
+ }]
+ },
+
+ showLines: false,
+
+ tooltips: {
+ callbacks: {
+ title: function() {
+ return ''; // doesn't make sense for scatter since data are formatted as a point
+ },
+ label: function(item) {
+ return '(' + item.xLabel + ', ' + item.yLabel + ')';
+ }
+ }
+ }
+});
+
+// Scatter charts use line controllers
+var controller_scatter = controller_line;
+
+// NOTE export a map in which the key represents the controller type, not
+// the class, and so must be CamelCase in order to be correctly retrieved
+// by the controller in core.controller.js (`controllers[meta.type]`).
+
+var controllers = {
+ bar: controller_bar,
+ bubble: controller_bubble,
+ doughnut: controller_doughnut,
+ horizontalBar: controller_horizontalBar,
+ line: controller_line,
+ polarArea: controller_polarArea,
+ pie: controller_pie,
+ radar: controller_radar,
+ scatter: controller_scatter
+};
+
+/**
+ * Helper function to get relative position for an event
+ * @param {Event|IEvent} event - The event to get the position for
+ * @param {Chart} chart - The chart
+ * @returns {object} the event position
+ */
+function getRelativePosition(e, chart) {
+ if (e.native) {
+ return {
+ x: e.x,
+ y: e.y
+ };
+ }
+
+ return helpers$1.getRelativePosition(e, chart);
+}
+
+/**
+ * Helper function to traverse all of the visible elements in the chart
+ * @param {Chart} chart - the chart
+ * @param {function} handler - the callback to execute for each visible item
+ */
+function parseVisibleItems(chart, handler) {
+ var datasets = chart.data.datasets;
+ var meta, i, j, ilen, jlen;
+
+ for (i = 0, ilen = datasets.length; i < ilen; ++i) {
+ if (!chart.isDatasetVisible(i)) {
+ continue;
+ }
+
+ meta = chart.getDatasetMeta(i);
+ for (j = 0, jlen = meta.data.length; j < jlen; ++j) {
+ var element = meta.data[j];
+ if (!element._view.skip) {
+ handler(element);
+ }
+ }
+ }
+}
+
+/**
+ * Helper function to get the items that intersect the event position
+ * @param {ChartElement[]} items - elements to filter
+ * @param {object} position - the point to be nearest to
+ * @return {ChartElement[]} the nearest items
+ */
+function getIntersectItems(chart, position) {
+ var elements = [];
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inRange(position.x, position.y)) {
+ elements.push(element);
+ }
+ });
+
+ return elements;
+}
+
+/**
+ * Helper function to get the items nearest to the event position considering all visible items in teh chart
+ * @param {Chart} chart - the chart to look at elements from
+ * @param {object} position - the point to be nearest to
+ * @param {boolean} intersect - if true, only consider items that intersect the position
+ * @param {function} distanceMetric - function to provide the distance between points
+ * @return {ChartElement[]} the nearest items
+ */
+function getNearestItems(chart, position, intersect, distanceMetric) {
+ var minDistance = Number.POSITIVE_INFINITY;
+ var nearestItems = [];
+
+ parseVisibleItems(chart, function(element) {
+ if (intersect && !element.inRange(position.x, position.y)) {
+ return;
+ }
+
+ var center = element.getCenterPoint();
+ var distance = distanceMetric(position, center);
+ if (distance < minDistance) {
+ nearestItems = [element];
+ minDistance = distance;
+ } else if (distance === minDistance) {
+ // Can have multiple items at the same distance in which case we sort by size
+ nearestItems.push(element);
+ }
+ });
+
+ return nearestItems;
+}
+
+/**
+ * Get a distance metric function for two points based on the
+ * axis mode setting
+ * @param {string} axis - the axis mode. x|y|xy
+ */
+function getDistanceMetricForAxis(axis) {
+ var useX = axis.indexOf('x') !== -1;
+ var useY = axis.indexOf('y') !== -1;
+
+ return function(pt1, pt2) {
+ var deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0;
+ var deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0;
+ return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2));
+ };
+}
+
+function indexMode(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ // Default axis for index mode is 'x' to match old behaviour
+ options.axis = options.axis || 'x';
+ var distanceMetric = getDistanceMetricForAxis(options.axis);
+ var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
+ var elements = [];
+
+ if (!items.length) {
+ return [];
+ }
+
+ chart.data.datasets.forEach(function(dataset, datasetIndex) {
+ if (chart.isDatasetVisible(datasetIndex)) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ var element = meta.data[items[0]._index];
+
+ // don't count items that are skipped (null data)
+ if (element && !element._view.skip) {
+ elements.push(element);
+ }
+ }
+ });
+
+ return elements;
+}
+
+/**
+ * @interface IInteractionOptions
+ */
+/**
+ * If true, only consider items that intersect the point
+ * @name IInterfaceOptions#boolean
+ * @type Boolean
+ */
+
+/**
+ * Contains interaction related functions
+ * @namespace Chart.Interaction
+ */
+var core_interaction = {
+ // Helper function for different modes
+ modes: {
+ single: function(chart, e) {
+ var position = getRelativePosition(e, chart);
+ var elements = [];
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inRange(position.x, position.y)) {
+ elements.push(element);
+ return elements;
+ }
+ });
+
+ return elements.slice(0, 1);
+ },
+
+ /**
+ * @function Chart.Interaction.modes.label
+ * @deprecated since version 2.4.0
+ * @todo remove at version 3
+ * @private
+ */
+ label: indexMode,
+
+ /**
+ * Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something
+ * If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item
+ * @function Chart.Interaction.modes.index
+ * @since v2.4.0
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use during interaction
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ index: indexMode,
+
+ /**
+ * Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something
+ * If the options.intersect is false, we find the nearest item and return the items in that dataset
+ * @function Chart.Interaction.modes.dataset
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use during interaction
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ dataset: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ options.axis = options.axis || 'xy';
+ var distanceMetric = getDistanceMetricForAxis(options.axis);
+ var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
+
+ if (items.length > 0) {
+ items = chart.getDatasetMeta(items[0]._datasetIndex).data;
+ }
+
+ return items;
+ },
+
+ /**
+ * @function Chart.Interaction.modes.x-axis
+ * @deprecated since version 2.4.0. Use index mode and intersect == true
+ * @todo remove at version 3
+ * @private
+ */
+ 'x-axis': function(chart, e) {
+ return indexMode(chart, e, {intersect: false});
+ },
+
+ /**
+ * Point mode returns all elements that hit test based on the event position
+ * of the event
+ * @function Chart.Interaction.modes.intersect
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ point: function(chart, e) {
+ var position = getRelativePosition(e, chart);
+ return getIntersectItems(chart, position);
+ },
+
+ /**
+ * nearest mode returns the element closest to the point
+ * @function Chart.Interaction.modes.intersect
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ nearest: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ options.axis = options.axis || 'xy';
+ var distanceMetric = getDistanceMetricForAxis(options.axis);
+ return getNearestItems(chart, position, options.intersect, distanceMetric);
+ },
+
+ /**
+ * x mode returns the elements that hit-test at the current x coordinate
+ * @function Chart.Interaction.modes.x
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ x: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ var items = [];
+ var intersectsItem = false;
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inXRange(position.x)) {
+ items.push(element);
+ }
+
+ if (element.inRange(position.x, position.y)) {
+ intersectsItem = true;
+ }
+ });
+
+ // If we want to trigger on an intersect and we don't have any items
+ // that intersect the position, return nothing
+ if (options.intersect && !intersectsItem) {
+ items = [];
+ }
+ return items;
+ },
+
+ /**
+ * y mode returns the elements that hit-test at the current y coordinate
+ * @function Chart.Interaction.modes.y
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ y: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ var items = [];
+ var intersectsItem = false;
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inYRange(position.y)) {
+ items.push(element);
+ }
+
+ if (element.inRange(position.x, position.y)) {
+ intersectsItem = true;
+ }
+ });
+
+ // If we want to trigger on an intersect and we don't have any items
+ // that intersect the position, return nothing
+ if (options.intersect && !intersectsItem) {
+ items = [];
+ }
+ return items;
+ }
+ }
+};
+
+function filterByPosition(array, position) {
+ return helpers$1.where(array, function(v) {
+ return v.position === position;
+ });
+}
+
+function sortByWeight(array, reverse) {
+ array.forEach(function(v, i) {
+ v._tmpIndex_ = i;
+ return v;
+ });
+ array.sort(function(a, b) {
+ var v0 = reverse ? b : a;
+ var v1 = reverse ? a : b;
+ return v0.weight === v1.weight ?
+ v0._tmpIndex_ - v1._tmpIndex_ :
+ v0.weight - v1.weight;
+ });
+ array.forEach(function(v) {
+ delete v._tmpIndex_;
+ });
+}
+
+function findMaxPadding(boxes) {
+ var top = 0;
+ var left = 0;
+ var bottom = 0;
+ var right = 0;
+ helpers$1.each(boxes, function(box) {
+ if (box.getPadding) {
+ var boxPadding = box.getPadding();
+ top = Math.max(top, boxPadding.top);
+ left = Math.max(left, boxPadding.left);
+ bottom = Math.max(bottom, boxPadding.bottom);
+ right = Math.max(right, boxPadding.right);
+ }
+ });
+ return {
+ top: top,
+ left: left,
+ bottom: bottom,
+ right: right
+ };
+}
+
+function addSizeByPosition(boxes, size) {
+ helpers$1.each(boxes, function(box) {
+ size[box.position] += box.isHorizontal() ? box.height : box.width;
+ });
+}
+
+core_defaults._set('global', {
+ layout: {
+ padding: {
+ top: 0,
+ right: 0,
+ bottom: 0,
+ left: 0
+ }
+ }
+});
+
+/**
+ * @interface ILayoutItem
+ * @prop {string} position - The position of the item in the chart layout. Possible values are
+ * 'left', 'top', 'right', 'bottom', and 'chartArea'
+ * @prop {number} weight - The weight used to sort the item. Higher weights are further away from the chart area
+ * @prop {boolean} fullWidth - if true, and the item is horizontal, then push vertical boxes down
+ * @prop {function} isHorizontal - returns true if the layout item is horizontal (ie. top or bottom)
+ * @prop {function} update - Takes two parameters: width and height. Returns size of item
+ * @prop {function} getPadding - Returns an object with padding on the edges
+ * @prop {number} width - Width of item. Must be valid after update()
+ * @prop {number} height - Height of item. Must be valid after update()
+ * @prop {number} left - Left edge of the item. Set by layout system and cannot be used in update
+ * @prop {number} top - Top edge of the item. Set by layout system and cannot be used in update
+ * @prop {number} right - Right edge of the item. Set by layout system and cannot be used in update
+ * @prop {number} bottom - Bottom edge of the item. Set by layout system and cannot be used in update
+ */
+
+// The layout service is very self explanatory. It's responsible for the layout within a chart.
+// Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need
+// It is this service's responsibility of carrying out that layout.
+var core_layouts = {
+ defaults: {},
+
+ /**
+ * Register a box to a chart.
+ * A box is simply a reference to an object that requires layout. eg. Scales, Legend, Title.
+ * @param {Chart} chart - the chart to use
+ * @param {ILayoutItem} item - the item to add to be layed out
+ */
+ addBox: function(chart, item) {
+ if (!chart.boxes) {
+ chart.boxes = [];
+ }
+
+ // initialize item with default values
+ item.fullWidth = item.fullWidth || false;
+ item.position = item.position || 'top';
+ item.weight = item.weight || 0;
+
+ chart.boxes.push(item);
+ },
+
+ /**
+ * Remove a layoutItem from a chart
+ * @param {Chart} chart - the chart to remove the box from
+ * @param {ILayoutItem} layoutItem - the item to remove from the layout
+ */
+ removeBox: function(chart, layoutItem) {
+ var index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1;
+ if (index !== -1) {
+ chart.boxes.splice(index, 1);
+ }
+ },
+
+ /**
+ * Sets (or updates) options on the given `item`.
+ * @param {Chart} chart - the chart in which the item lives (or will be added to)
+ * @param {ILayoutItem} item - the item to configure with the given options
+ * @param {object} options - the new item options.
+ */
+ configure: function(chart, item, options) {
+ var props = ['fullWidth', 'position', 'weight'];
+ var ilen = props.length;
+ var i = 0;
+ var prop;
+
+ for (; i < ilen; ++i) {
+ prop = props[i];
+ if (options.hasOwnProperty(prop)) {
+ item[prop] = options[prop];
+ }
+ }
+ },
+
+ /**
+ * Fits boxes of the given chart into the given size by having each box measure itself
+ * then running a fitting algorithm
+ * @param {Chart} chart - the chart
+ * @param {number} width - the width to fit into
+ * @param {number} height - the height to fit into
+ */
+ update: function(chart, width, height) {
+ if (!chart) {
+ return;
+ }
+
+ var layoutOptions = chart.options.layout || {};
+ var padding = helpers$1.options.toPadding(layoutOptions.padding);
+ var leftPadding = padding.left;
+ var rightPadding = padding.right;
+ var topPadding = padding.top;
+ var bottomPadding = padding.bottom;
+
+ var leftBoxes = filterByPosition(chart.boxes, 'left');
+ var rightBoxes = filterByPosition(chart.boxes, 'right');
+ var topBoxes = filterByPosition(chart.boxes, 'top');
+ var bottomBoxes = filterByPosition(chart.boxes, 'bottom');
+ var chartAreaBoxes = filterByPosition(chart.boxes, 'chartArea');
+
+ // Sort boxes by weight. A higher weight is further away from the chart area
+ sortByWeight(leftBoxes, true);
+ sortByWeight(rightBoxes, false);
+ sortByWeight(topBoxes, true);
+ sortByWeight(bottomBoxes, false);
+
+ var verticalBoxes = leftBoxes.concat(rightBoxes);
+ var horizontalBoxes = topBoxes.concat(bottomBoxes);
+ var outerBoxes = verticalBoxes.concat(horizontalBoxes);
+
+ // Essentially we now have any number of boxes on each of the 4 sides.
+ // Our canvas looks like the following.
+ // The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and
+ // B1 is the bottom axis
+ // There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays
+ // These locations are single-box locations only, when trying to register a chartArea location that is already taken,
+ // an error will be thrown.
+ //
+ // |----------------------------------------------------|
+ // | T1 (Full Width) |
+ // |----------------------------------------------------|
+ // | | | T2 | |
+ // | |----|-------------------------------------|----|
+ // | | | C1 | | C2 | |
+ // | | |----| |----| |
+ // | | | | |
+ // | L1 | L2 | ChartArea (C0) | R1 |
+ // | | | | |
+ // | | |----| |----| |
+ // | | | C3 | | C4 | |
+ // | |----|-------------------------------------|----|
+ // | | | B1 | |
+ // |----------------------------------------------------|
+ // | B2 (Full Width) |
+ // |----------------------------------------------------|
+ //
+ // What we do to find the best sizing, we do the following
+ // 1. Determine the minimum size of the chart area.
+ // 2. Split the remaining width equally between each vertical axis
+ // 3. Split the remaining height equally between each horizontal axis
+ // 4. Give each layout the maximum size it can be. The layout will return it's minimum size
+ // 5. Adjust the sizes of each axis based on it's minimum reported size.
+ // 6. Refit each axis
+ // 7. Position each axis in the final location
+ // 8. Tell the chart the final location of the chart area
+ // 9. Tell any axes that overlay the chart area the positions of the chart area
+
+ // Step 1
+ var chartWidth = width - leftPadding - rightPadding;
+ var chartHeight = height - topPadding - bottomPadding;
+ var chartAreaWidth = chartWidth / 2; // min 50%
+
+ // Step 2
+ var verticalBoxWidth = (width - chartAreaWidth) / verticalBoxes.length;
+
+ // Step 3
+ // TODO re-limit horizontal axis height (this limit has affected only padding calculation since PR 1837)
+ // var horizontalBoxHeight = (height - chartAreaHeight) / horizontalBoxes.length;
+
+ // Step 4
+ var maxChartAreaWidth = chartWidth;
+ var maxChartAreaHeight = chartHeight;
+ var outerBoxSizes = {top: topPadding, left: leftPadding, bottom: bottomPadding, right: rightPadding};
+ var minBoxSizes = [];
+ var maxPadding;
+
+ function getMinimumBoxSize(box) {
+ var minSize;
+ var isHorizontal = box.isHorizontal();
+
+ if (isHorizontal) {
+ minSize = box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2);
+ maxChartAreaHeight -= minSize.height;
+ } else {
+ minSize = box.update(verticalBoxWidth, maxChartAreaHeight);
+ maxChartAreaWidth -= minSize.width;
+ }
+
+ minBoxSizes.push({
+ horizontal: isHorizontal,
+ width: minSize.width,
+ box: box,
+ });
+ }
+
+ helpers$1.each(outerBoxes, getMinimumBoxSize);
+
+ // If a horizontal box has padding, we move the left boxes over to avoid ugly charts (see issue #2478)
+ maxPadding = findMaxPadding(outerBoxes);
+
+ // At this point, maxChartAreaHeight and maxChartAreaWidth are the size the chart area could
+ // be if the axes are drawn at their minimum sizes.
+ // Steps 5 & 6
+
+ // Function to fit a box
+ function fitBox(box) {
+ var minBoxSize = helpers$1.findNextWhere(minBoxSizes, function(minBox) {
+ return minBox.box === box;
+ });
+
+ if (minBoxSize) {
+ if (minBoxSize.horizontal) {
+ var scaleMargin = {
+ left: Math.max(outerBoxSizes.left, maxPadding.left),
+ right: Math.max(outerBoxSizes.right, maxPadding.right),
+ top: 0,
+ bottom: 0
+ };
+
+ // Don't use min size here because of label rotation. When the labels are rotated, their rotation highly depends
+ // on the margin. Sometimes they need to increase in size slightly
+ box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2, scaleMargin);
+ } else {
+ box.update(minBoxSize.width, maxChartAreaHeight);
+ }
+ }
+ }
+
+ // Update, and calculate the left and right margins for the horizontal boxes
+ helpers$1.each(verticalBoxes, fitBox);
+ addSizeByPosition(verticalBoxes, outerBoxSizes);
+
+ // Set the Left and Right margins for the horizontal boxes
+ helpers$1.each(horizontalBoxes, fitBox);
+ addSizeByPosition(horizontalBoxes, outerBoxSizes);
+
+ function finalFitVerticalBox(box) {
+ var minBoxSize = helpers$1.findNextWhere(minBoxSizes, function(minSize) {
+ return minSize.box === box;
+ });
+
+ var scaleMargin = {
+ left: 0,
+ right: 0,
+ top: outerBoxSizes.top,
+ bottom: outerBoxSizes.bottom
+ };
+
+ if (minBoxSize) {
+ box.update(minBoxSize.width, maxChartAreaHeight, scaleMargin);
+ }
+ }
+
+ // Let the left layout know the final margin
+ helpers$1.each(verticalBoxes, finalFitVerticalBox);
+
+ // Recalculate because the size of each layout might have changed slightly due to the margins (label rotation for instance)
+ outerBoxSizes = {top: topPadding, left: leftPadding, bottom: bottomPadding, right: rightPadding};
+ addSizeByPosition(outerBoxes, outerBoxSizes);
+
+ // We may be adding some padding to account for rotated x axis labels
+ var leftPaddingAddition = Math.max(maxPadding.left - outerBoxSizes.left, 0);
+ outerBoxSizes.left += leftPaddingAddition;
+ outerBoxSizes.right += Math.max(maxPadding.right - outerBoxSizes.right, 0);
+
+ var topPaddingAddition = Math.max(maxPadding.top - outerBoxSizes.top, 0);
+ outerBoxSizes.top += topPaddingAddition;
+ outerBoxSizes.bottom += Math.max(maxPadding.bottom - outerBoxSizes.bottom, 0);
+
+ // Figure out if our chart area changed. This would occur if the dataset layout label rotation
+ // changed due to the application of the margins in step 6. Since we can only get bigger, this is safe to do
+ // without calling `fit` again
+ var newMaxChartAreaHeight = height - outerBoxSizes.top - outerBoxSizes.bottom;
+ var newMaxChartAreaWidth = width - outerBoxSizes.left - outerBoxSizes.right;
+
+ if (newMaxChartAreaWidth !== maxChartAreaWidth || newMaxChartAreaHeight !== maxChartAreaHeight) {
+ helpers$1.each(verticalBoxes, function(box) {
+ box.height = newMaxChartAreaHeight;
+ });
+
+ helpers$1.each(horizontalBoxes, function(box) {
+ if (!box.fullWidth) {
+ box.width = newMaxChartAreaWidth;
+ }
+ });
+
+ maxChartAreaHeight = newMaxChartAreaHeight;
+ maxChartAreaWidth = newMaxChartAreaWidth;
+ }
+
+ // Step 7 - Position the boxes
+ var left = leftPadding + leftPaddingAddition;
+ var top = topPadding + topPaddingAddition;
+
+ function placeBox(box) {
+ if (box.isHorizontal()) {
+ box.left = box.fullWidth ? leftPadding : outerBoxSizes.left;
+ box.right = box.fullWidth ? width - rightPadding : outerBoxSizes.left + maxChartAreaWidth;
+ box.top = top;
+ box.bottom = top + box.height;
+
+ // Move to next point
+ top = box.bottom;
+
+ } else {
+
+ box.left = left;
+ box.right = left + box.width;
+ box.top = outerBoxSizes.top;
+ box.bottom = outerBoxSizes.top + maxChartAreaHeight;
+
+ // Move to next point
+ left = box.right;
+ }
+ }
+
+ helpers$1.each(leftBoxes.concat(topBoxes), placeBox);
+
+ // Account for chart width and height
+ left += maxChartAreaWidth;
+ top += maxChartAreaHeight;
+
+ helpers$1.each(rightBoxes, placeBox);
+ helpers$1.each(bottomBoxes, placeBox);
+
+ // Step 8
+ chart.chartArea = {
+ left: outerBoxSizes.left,
+ top: outerBoxSizes.top,
+ right: outerBoxSizes.left + maxChartAreaWidth,
+ bottom: outerBoxSizes.top + maxChartAreaHeight
+ };
+
+ // Step 9
+ helpers$1.each(chartAreaBoxes, function(box) {
+ box.left = chart.chartArea.left;
+ box.top = chart.chartArea.top;
+ box.right = chart.chartArea.right;
+ box.bottom = chart.chartArea.bottom;
+
+ box.update(maxChartAreaWidth, maxChartAreaHeight);
+ });
+ }
+};
+
+/**
+ * Platform fallback implementation (minimal).
+ * @see https://github.com/chartjs/Chart.js/pull/4591#issuecomment-319575939
+ */
+
+var platform_basic = {
+ acquireContext: function(item) {
+ if (item && item.canvas) {
+ // Support for any object associated to a canvas (including a context2d)
+ item = item.canvas;
+ }
+
+ return item && item.getContext('2d') || null;
+ }
+};
+
+var platform_dom = "/*\n * DOM element rendering detection\n * https://davidwalsh.name/detect-node-insertion\n */\n@keyframes chartjs-render-animation {\n\tfrom { opacity: 0.99; }\n\tto { opacity: 1; }\n}\n\n.chartjs-render-monitor {\n\tanimation: chartjs-render-animation 0.001s;\n}\n\n/*\n * DOM element resizing detection\n * https://github.com/marcj/css-element-queries\n */\n.chartjs-size-monitor,\n.chartjs-size-monitor-expand,\n.chartjs-size-monitor-shrink {\n\tposition: absolute;\n\tdirection: ltr;\n\tleft: 0;\n\ttop: 0;\n\tright: 0;\n\tbottom: 0;\n\toverflow: hidden;\n\tpointer-events: none;\n\tvisibility: hidden;\n\tz-index: -1;\n}\n\n.chartjs-size-monitor-expand > div {\n\tposition: absolute;\n\twidth: 1000000px;\n\theight: 1000000px;\n\tleft: 0;\n\ttop: 0;\n}\n\n.chartjs-size-monitor-shrink > div {\n\tposition: absolute;\n\twidth: 200%;\n\theight: 200%;\n\tleft: 0;\n\ttop: 0;\n}\n";
+
+var platform_dom$1 = /*#__PURE__*/Object.freeze({
+default: platform_dom
+});
+
+var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
+
+function commonjsRequire () {
+ throw new Error('Dynamic requires are not currently supported by rollup-plugin-commonjs');
+}
+
+function createCommonjsModule(fn, module) {
+ return module = { exports: {} }, fn(module, module.exports), module.exports;
+}
+
+function getCjsExportFromNamespace (n) {
+ return n && n.default || n;
+}
+
+var stylesheet = getCjsExportFromNamespace(platform_dom$1);
+
+var EXPANDO_KEY = '$chartjs';
+var CSS_PREFIX = 'chartjs-';
+var CSS_SIZE_MONITOR = CSS_PREFIX + 'size-monitor';
+var CSS_RENDER_MONITOR = CSS_PREFIX + 'render-monitor';
+var CSS_RENDER_ANIMATION = CSS_PREFIX + 'render-animation';
+var ANIMATION_START_EVENTS = ['animationstart', 'webkitAnimationStart'];
+
+/**
+ * DOM event types -> Chart.js event types.
+ * Note: only events with different types are mapped.
+ * @see https://developer.mozilla.org/en-US/docs/Web/Events
+ */
+var EVENT_TYPES = {
+ touchstart: 'mousedown',
+ touchmove: 'mousemove',
+ touchend: 'mouseup',
+ pointerenter: 'mouseenter',
+ pointerdown: 'mousedown',
+ pointermove: 'mousemove',
+ pointerup: 'mouseup',
+ pointerleave: 'mouseout',
+ pointerout: 'mouseout'
+};
+
+/**
+ * The "used" size is the final value of a dimension property after all calculations have
+ * been performed. This method uses the computed style of `element` but returns undefined
+ * if the computed style is not expressed in pixels. That can happen in some cases where
+ * `element` has a size relative to its parent and this last one is not yet displayed,
+ * for example because of `display: none` on a parent node.
+ * @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value
+ * @returns {number} Size in pixels or undefined if unknown.
+ */
+function readUsedSize(element, property) {
+ var value = helpers$1.getStyle(element, property);
+ var matches = value && value.match(/^(\d+)(\.\d+)?px$/);
+ return matches ? Number(matches[1]) : undefined;
+}
+
+/**
+ * Initializes the canvas style and render size without modifying the canvas display size,
+ * since responsiveness is handled by the controller.resize() method. The config is used
+ * to determine the aspect ratio to apply in case no explicit height has been specified.
+ */
+function initCanvas(canvas, config) {
+ var style = canvas.style;
+
+ // NOTE(SB) canvas.getAttribute('width') !== canvas.width: in the first case it
+ // returns null or '' if no explicit value has been set to the canvas attribute.
+ var renderHeight = canvas.getAttribute('height');
+ var renderWidth = canvas.getAttribute('width');
+
+ // Chart.js modifies some canvas values that we want to restore on destroy
+ canvas[EXPANDO_KEY] = {
+ initial: {
+ height: renderHeight,
+ width: renderWidth,
+ style: {
+ display: style.display,
+ height: style.height,
+ width: style.width
+ }
+ }
+ };
+
+ // Force canvas to display as block to avoid extra space caused by inline
+ // elements, which would interfere with the responsive resize process.
+ // https://github.com/chartjs/Chart.js/issues/2538
+ style.display = style.display || 'block';
+
+ if (renderWidth === null || renderWidth === '') {
+ var displayWidth = readUsedSize(canvas, 'width');
+ if (displayWidth !== undefined) {
+ canvas.width = displayWidth;
+ }
+ }
+
+ if (renderHeight === null || renderHeight === '') {
+ if (canvas.style.height === '') {
+ // If no explicit render height and style height, let's apply the aspect ratio,
+ // which one can be specified by the user but also by charts as default option
+ // (i.e. options.aspectRatio). If not specified, use canvas aspect ratio of 2.
+ canvas.height = canvas.width / (config.options.aspectRatio || 2);
+ } else {
+ var displayHeight = readUsedSize(canvas, 'height');
+ if (displayWidth !== undefined) {
+ canvas.height = displayHeight;
+ }
+ }
+ }
+
+ return canvas;
+}
+
+/**
+ * Detects support for options object argument in addEventListener.
+ * https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#Safely_detecting_option_support
+ * @private
+ */
+var supportsEventListenerOptions = (function() {
+ var supports = false;
+ try {
+ var options = Object.defineProperty({}, 'passive', {
+ // eslint-disable-next-line getter-return
+ get: function() {
+ supports = true;
+ }
+ });
+ window.addEventListener('e', null, options);
+ } catch (e) {
+ // continue regardless of error
+ }
+ return supports;
+}());
+
+// Default passive to true as expected by Chrome for 'touchstart' and 'touchend' events.
+// https://github.com/chartjs/Chart.js/issues/4287
+var eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false;
+
+function addListener(node, type, listener) {
+ node.addEventListener(type, listener, eventListenerOptions);
+}
+
+function removeListener(node, type, listener) {
+ node.removeEventListener(type, listener, eventListenerOptions);
+}
+
+function createEvent(type, chart, x, y, nativeEvent) {
+ return {
+ type: type,
+ chart: chart,
+ native: nativeEvent || null,
+ x: x !== undefined ? x : null,
+ y: y !== undefined ? y : null,
+ };
+}
+
+function fromNativeEvent(event, chart) {
+ var type = EVENT_TYPES[event.type] || event.type;
+ var pos = helpers$1.getRelativePosition(event, chart);
+ return createEvent(type, chart, pos.x, pos.y, event);
+}
+
+function throttled(fn, thisArg) {
+ var ticking = false;
+ var args = [];
+
+ return function() {
+ args = Array.prototype.slice.call(arguments);
+ thisArg = thisArg || this;
+
+ if (!ticking) {
+ ticking = true;
+ helpers$1.requestAnimFrame.call(window, function() {
+ ticking = false;
+ fn.apply(thisArg, args);
+ });
+ }
+ };
+}
+
+function createDiv(cls) {
+ var el = document.createElement('div');
+ el.className = cls || '';
+ return el;
+}
+
+// Implementation based on https://github.com/marcj/css-element-queries
+function createResizer(handler) {
+ var maxSize = 1000000;
+
+ // NOTE(SB) Don't use innerHTML because it could be considered unsafe.
+ // https://github.com/chartjs/Chart.js/issues/5902
+ var resizer = createDiv(CSS_SIZE_MONITOR);
+ var expand = createDiv(CSS_SIZE_MONITOR + '-expand');
+ var shrink = createDiv(CSS_SIZE_MONITOR + '-shrink');
+
+ expand.appendChild(createDiv());
+ shrink.appendChild(createDiv());
+
+ resizer.appendChild(expand);
+ resizer.appendChild(shrink);
+ resizer._reset = function() {
+ expand.scrollLeft = maxSize;
+ expand.scrollTop = maxSize;
+ shrink.scrollLeft = maxSize;
+ shrink.scrollTop = maxSize;
+ };
+
+ var onScroll = function() {
+ resizer._reset();
+ handler();
+ };
+
+ addListener(expand, 'scroll', onScroll.bind(expand, 'expand'));
+ addListener(shrink, 'scroll', onScroll.bind(shrink, 'shrink'));
+
+ return resizer;
+}
+
+// https://davidwalsh.name/detect-node-insertion
+function watchForRender(node, handler) {
+ var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
+ var proxy = expando.renderProxy = function(e) {
+ if (e.animationName === CSS_RENDER_ANIMATION) {
+ handler();
+ }
+ };
+
+ helpers$1.each(ANIMATION_START_EVENTS, function(type) {
+ addListener(node, type, proxy);
+ });
+
+ // #4737: Chrome might skip the CSS animation when the CSS_RENDER_MONITOR class
+ // is removed then added back immediately (same animation frame?). Accessing the
+ // `offsetParent` property will force a reflow and re-evaluate the CSS animation.
+ // https://gist.github.com/paulirish/5d52fb081b3570c81e3a#box-metrics
+ // https://github.com/chartjs/Chart.js/issues/4737
+ expando.reflow = !!node.offsetParent;
+
+ node.classList.add(CSS_RENDER_MONITOR);
+}
+
+function unwatchForRender(node) {
+ var expando = node[EXPANDO_KEY] || {};
+ var proxy = expando.renderProxy;
+
+ if (proxy) {
+ helpers$1.each(ANIMATION_START_EVENTS, function(type) {
+ removeListener(node, type, proxy);
+ });
+
+ delete expando.renderProxy;
+ }
+
+ node.classList.remove(CSS_RENDER_MONITOR);
+}
+
+function addResizeListener(node, listener, chart) {
+ var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
+
+ // Let's keep track of this added resizer and thus avoid DOM query when removing it.
+ var resizer = expando.resizer = createResizer(throttled(function() {
+ if (expando.resizer) {
+ var container = chart.options.maintainAspectRatio && node.parentNode;
+ var w = container ? container.clientWidth : 0;
+ listener(createEvent('resize', chart));
+ if (container && container.clientWidth < w && chart.canvas) {
+ // If the container size shrank during chart resize, let's assume
+ // scrollbar appeared. So we resize again with the scrollbar visible -
+ // effectively making chart smaller and the scrollbar hidden again.
+ // Because we are inside `throttled`, and currently `ticking`, scroll
+ // events are ignored during this whole 2 resize process.
+ // If we assumed wrong and something else happened, we are resizing
+ // twice in a frame (potential performance issue)
+ listener(createEvent('resize', chart));
+ }
+ }
+ }));
+
+ // The resizer needs to be attached to the node parent, so we first need to be
+ // sure that `node` is attached to the DOM before injecting the resizer element.
+ watchForRender(node, function() {
+ if (expando.resizer) {
+ var container = node.parentNode;
+ if (container && container !== resizer.parentNode) {
+ container.insertBefore(resizer, container.firstChild);
+ }
+
+ // The container size might have changed, let's reset the resizer state.
+ resizer._reset();
+ }
+ });
+}
+
+function removeResizeListener(node) {
+ var expando = node[EXPANDO_KEY] || {};
+ var resizer = expando.resizer;
+
+ delete expando.resizer;
+ unwatchForRender(node);
+
+ if (resizer && resizer.parentNode) {
+ resizer.parentNode.removeChild(resizer);
+ }
+}
+
+function injectCSS(platform, css) {
+ // https://stackoverflow.com/q/3922139
+ var style = platform._style || document.createElement('style');
+ if (!platform._style) {
+ platform._style = style;
+ css = '/* Chart.js */\n' + css;
+ style.setAttribute('type', 'text/css');
+ document.getElementsByTagName('head')[0].appendChild(style);
+ }
+
+ style.appendChild(document.createTextNode(css));
+}
+
+var platform_dom$2 = {
+ /**
+ * When `true`, prevents the automatic injection of the stylesheet required to
+ * correctly detect when the chart is added to the DOM and then resized. This
+ * switch has been added to allow external stylesheet (`dist/Chart(.min)?.js`)
+ * to be manually imported to make this library compatible with any CSP.
+ * See https://github.com/chartjs/Chart.js/issues/5208
+ */
+ disableCSSInjection: false,
+
+ /**
+ * This property holds whether this platform is enabled for the current environment.
+ * Currently used by platform.js to select the proper implementation.
+ * @private
+ */
+ _enabled: typeof window !== 'undefined' && typeof document !== 'undefined',
+
+ /**
+ * @private
+ */
+ _ensureLoaded: function() {
+ if (this._loaded) {
+ return;
+ }
+
+ this._loaded = true;
+
+ // https://github.com/chartjs/Chart.js/issues/5208
+ if (!this.disableCSSInjection) {
+ injectCSS(this, stylesheet);
+ }
+ },
+
+ acquireContext: function(item, config) {
+ if (typeof item === 'string') {
+ item = document.getElementById(item);
+ } else if (item.length) {
+ // Support for array based queries (such as jQuery)
+ item = item[0];
+ }
+
+ if (item && item.canvas) {
+ // Support for any object associated to a canvas (including a context2d)
+ item = item.canvas;
+ }
+
+ // To prevent canvas fingerprinting, some add-ons undefine the getContext
+ // method, for example: https://github.com/kkapsner/CanvasBlocker
+ // https://github.com/chartjs/Chart.js/issues/2807
+ var context = item && item.getContext && item.getContext('2d');
+
+ // Load platform resources on first chart creation, to make possible to change
+ // platform options after importing the library (e.g. `disableCSSInjection`).
+ this._ensureLoaded();
+
+ // `instanceof HTMLCanvasElement/CanvasRenderingContext2D` fails when the item is
+ // inside an iframe or when running in a protected environment. We could guess the
+ // types from their toString() value but let's keep things flexible and assume it's
+ // a sufficient condition if the item has a context2D which has item as `canvas`.
+ // https://github.com/chartjs/Chart.js/issues/3887
+ // https://github.com/chartjs/Chart.js/issues/4102
+ // https://github.com/chartjs/Chart.js/issues/4152
+ if (context && context.canvas === item) {
+ initCanvas(item, config);
+ return context;
+ }
+
+ return null;
+ },
+
+ releaseContext: function(context) {
+ var canvas = context.canvas;
+ if (!canvas[EXPANDO_KEY]) {
+ return;
+ }
+
+ var initial = canvas[EXPANDO_KEY].initial;
+ ['height', 'width'].forEach(function(prop) {
+ var value = initial[prop];
+ if (helpers$1.isNullOrUndef(value)) {
+ canvas.removeAttribute(prop);
+ } else {
+ canvas.setAttribute(prop, value);
+ }
+ });
+
+ helpers$1.each(initial.style || {}, function(value, key) {
+ canvas.style[key] = value;
+ });
+
+ // The canvas render size might have been changed (and thus the state stack discarded),
+ // we can't use save() and restore() to restore the initial state. So make sure that at
+ // least the canvas context is reset to the default state by setting the canvas width.
+ // https://www.w3.org/TR/2011/WD-html5-20110525/the-canvas-element.html
+ // eslint-disable-next-line no-self-assign
+ canvas.width = canvas.width;
+
+ delete canvas[EXPANDO_KEY];
+ },
+
+ addEventListener: function(chart, type, listener) {
+ var canvas = chart.canvas;
+ if (type === 'resize') {
+ // Note: the resize event is not supported on all browsers.
+ addResizeListener(canvas, listener, chart);
+ return;
+ }
+
+ var expando = listener[EXPANDO_KEY] || (listener[EXPANDO_KEY] = {});
+ var proxies = expando.proxies || (expando.proxies = {});
+ var proxy = proxies[chart.id + '_' + type] = function(event) {
+ listener(fromNativeEvent(event, chart));
+ };
+
+ addListener(canvas, type, proxy);
+ },
+
+ removeEventListener: function(chart, type, listener) {
+ var canvas = chart.canvas;
+ if (type === 'resize') {
+ // Note: the resize event is not supported on all browsers.
+ removeResizeListener(canvas);
+ return;
+ }
+
+ var expando = listener[EXPANDO_KEY] || {};
+ var proxies = expando.proxies || {};
+ var proxy = proxies[chart.id + '_' + type];
+ if (!proxy) {
+ return;
+ }
+
+ removeListener(canvas, type, proxy);
+ }
+};
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use EventTarget.addEventListener instead.
+ * EventTarget.addEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener
+ * @function Chart.helpers.addEvent
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers$1.addEvent = addListener;
+
+/**
+ * Provided for backward compatibility, use EventTarget.removeEventListener instead.
+ * EventTarget.removeEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/removeEventListener
+ * @function Chart.helpers.removeEvent
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers$1.removeEvent = removeListener;
+
+// @TODO Make possible to select another platform at build time.
+var implementation = platform_dom$2._enabled ? platform_dom$2 : platform_basic;
+
+/**
+ * @namespace Chart.platform
+ * @see https://chartjs.gitbooks.io/proposals/content/Platform.html
+ * @since 2.4.0
+ */
+var platform = helpers$1.extend({
+ /**
+ * @since 2.7.0
+ */
+ initialize: function() {},
+
+ /**
+ * Called at chart construction time, returns a context2d instance implementing
+ * the [W3C Canvas 2D Context API standard]{@link https://www.w3.org/TR/2dcontext/}.
+ * @param {*} item - The native item from which to acquire context (platform specific)
+ * @param {object} options - The chart options
+ * @returns {CanvasRenderingContext2D} context2d instance
+ */
+ acquireContext: function() {},
+
+ /**
+ * Called at chart destruction time, releases any resources associated to the context
+ * previously returned by the acquireContext() method.
+ * @param {CanvasRenderingContext2D} context - The context2d instance
+ * @returns {boolean} true if the method succeeded, else false
+ */
+ releaseContext: function() {},
+
+ /**
+ * Registers the specified listener on the given chart.
+ * @param {Chart} chart - Chart from which to listen for event
+ * @param {string} type - The ({@link IEvent}) type to listen for
+ * @param {function} listener - Receives a notification (an object that implements
+ * the {@link IEvent} interface) when an event of the specified type occurs.
+ */
+ addEventListener: function() {},
+
+ /**
+ * Removes the specified listener previously registered with addEventListener.
+ * @param {Chart} chart - Chart from which to remove the listener
+ * @param {string} type - The ({@link IEvent}) type to remove
+ * @param {function} listener - The listener function to remove from the event target.
+ */
+ removeEventListener: function() {}
+
+}, implementation);
+
+core_defaults._set('global', {
+ plugins: {}
+});
+
+/**
+ * The plugin service singleton
+ * @namespace Chart.plugins
+ * @since 2.1.0
+ */
+var core_plugins = {
+ /**
+ * Globally registered plugins.
+ * @private
+ */
+ _plugins: [],
+
+ /**
+ * This identifier is used to invalidate the descriptors cache attached to each chart
+ * when a global plugin is registered or unregistered. In this case, the cache ID is
+ * incremented and descriptors are regenerated during following API calls.
+ * @private
+ */
+ _cacheId: 0,
+
+ /**
+ * Registers the given plugin(s) if not already registered.
+ * @param {IPlugin[]|IPlugin} plugins plugin instance(s).
+ */
+ register: function(plugins) {
+ var p = this._plugins;
+ ([]).concat(plugins).forEach(function(plugin) {
+ if (p.indexOf(plugin) === -1) {
+ p.push(plugin);
+ }
+ });
+
+ this._cacheId++;
+ },
+
+ /**
+ * Unregisters the given plugin(s) only if registered.
+ * @param {IPlugin[]|IPlugin} plugins plugin instance(s).
+ */
+ unregister: function(plugins) {
+ var p = this._plugins;
+ ([]).concat(plugins).forEach(function(plugin) {
+ var idx = p.indexOf(plugin);
+ if (idx !== -1) {
+ p.splice(idx, 1);
+ }
+ });
+
+ this._cacheId++;
+ },
+
+ /**
+ * Remove all registered plugins.
+ * @since 2.1.5
+ */
+ clear: function() {
+ this._plugins = [];
+ this._cacheId++;
+ },
+
+ /**
+ * Returns the number of registered plugins?
+ * @returns {number}
+ * @since 2.1.5
+ */
+ count: function() {
+ return this._plugins.length;
+ },
+
+ /**
+ * Returns all registered plugin instances.
+ * @returns {IPlugin[]} array of plugin objects.
+ * @since 2.1.5
+ */
+ getAll: function() {
+ return this._plugins;
+ },
+
+ /**
+ * Calls enabled plugins for `chart` on the specified hook and with the given args.
+ * This method immediately returns as soon as a plugin explicitly returns false. The
+ * returned value can be used, for instance, to interrupt the current action.
+ * @param {Chart} chart - The chart instance for which plugins should be called.
+ * @param {string} hook - The name of the plugin method to call (e.g. 'beforeUpdate').
+ * @param {Array} [args] - Extra arguments to apply to the hook call.
+ * @returns {boolean} false if any of the plugins return false, else returns true.
+ */
+ notify: function(chart, hook, args) {
+ var descriptors = this.descriptors(chart);
+ var ilen = descriptors.length;
+ var i, descriptor, plugin, params, method;
+
+ for (i = 0; i < ilen; ++i) {
+ descriptor = descriptors[i];
+ plugin = descriptor.plugin;
+ method = plugin[hook];
+ if (typeof method === 'function') {
+ params = [chart].concat(args || []);
+ params.push(descriptor.options);
+ if (method.apply(plugin, params) === false) {
+ return false;
+ }
+ }
+ }
+
+ return true;
+ },
+
+ /**
+ * Returns descriptors of enabled plugins for the given chart.
+ * @returns {object[]} [{ plugin, options }]
+ * @private
+ */
+ descriptors: function(chart) {
+ var cache = chart.$plugins || (chart.$plugins = {});
+ if (cache.id === this._cacheId) {
+ return cache.descriptors;
+ }
+
+ var plugins = [];
+ var descriptors = [];
+ var config = (chart && chart.config) || {};
+ var options = (config.options && config.options.plugins) || {};
+
+ this._plugins.concat(config.plugins || []).forEach(function(plugin) {
+ var idx = plugins.indexOf(plugin);
+ if (idx !== -1) {
+ return;
+ }
+
+ var id = plugin.id;
+ var opts = options[id];
+ if (opts === false) {
+ return;
+ }
+
+ if (opts === true) {
+ opts = helpers$1.clone(core_defaults.global.plugins[id]);
+ }
+
+ plugins.push(plugin);
+ descriptors.push({
+ plugin: plugin,
+ options: opts || {}
+ });
+ });
+
+ cache.descriptors = descriptors;
+ cache.id = this._cacheId;
+ return descriptors;
+ },
+
+ /**
+ * Invalidates cache for the given chart: descriptors hold a reference on plugin option,
+ * but in some cases, this reference can be changed by the user when updating options.
+ * https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
+ * @private
+ */
+ _invalidate: function(chart) {
+ delete chart.$plugins;
+ }
+};
+
+var core_scaleService = {
+ // Scale registration object. Extensions can register new scale types (such as log or DB scales) and then
+ // use the new chart options to grab the correct scale
+ constructors: {},
+ // Use a registration function so that we can move to an ES6 map when we no longer need to support
+ // old browsers
+
+ // Scale config defaults
+ defaults: {},
+ registerScaleType: function(type, scaleConstructor, scaleDefaults) {
+ this.constructors[type] = scaleConstructor;
+ this.defaults[type] = helpers$1.clone(scaleDefaults);
+ },
+ getScaleConstructor: function(type) {
+ return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined;
+ },
+ getScaleDefaults: function(type) {
+ // Return the scale defaults merged with the global settings so that we always use the latest ones
+ return this.defaults.hasOwnProperty(type) ? helpers$1.merge({}, [core_defaults.scale, this.defaults[type]]) : {};
+ },
+ updateScaleDefaults: function(type, additions) {
+ var me = this;
+ if (me.defaults.hasOwnProperty(type)) {
+ me.defaults[type] = helpers$1.extend(me.defaults[type], additions);
+ }
+ },
+ addScalesToLayout: function(chart) {
+ // Adds each scale to the chart.boxes array to be sized accordingly
+ helpers$1.each(chart.scales, function(scale) {
+ // Set ILayoutItem parameters for backwards compatibility
+ scale.fullWidth = scale.options.fullWidth;
+ scale.position = scale.options.position;
+ scale.weight = scale.options.weight;
+ core_layouts.addBox(chart, scale);
+ });
+ }
+};
+
+var valueOrDefault$7 = helpers$1.valueOrDefault;
+
+core_defaults._set('global', {
+ tooltips: {
+ enabled: true,
+ custom: null,
+ mode: 'nearest',
+ position: 'average',
+ intersect: true,
+ backgroundColor: 'rgba(0,0,0,0.8)',
+ titleFontStyle: 'bold',
+ titleSpacing: 2,
+ titleMarginBottom: 6,
+ titleFontColor: '#fff',
+ titleAlign: 'left',
+ bodySpacing: 2,
+ bodyFontColor: '#fff',
+ bodyAlign: 'left',
+ footerFontStyle: 'bold',
+ footerSpacing: 2,
+ footerMarginTop: 6,
+ footerFontColor: '#fff',
+ footerAlign: 'left',
+ yPadding: 6,
+ xPadding: 6,
+ caretPadding: 2,
+ caretSize: 5,
+ cornerRadius: 6,
+ multiKeyBackground: '#fff',
+ displayColors: true,
+ borderColor: 'rgba(0,0,0,0)',
+ borderWidth: 0,
+ callbacks: {
+ // Args are: (tooltipItems, data)
+ beforeTitle: helpers$1.noop,
+ title: function(tooltipItems, data) {
+ var title = '';
+ var labels = data.labels;
+ var labelCount = labels ? labels.length : 0;
+
+ if (tooltipItems.length > 0) {
+ var item = tooltipItems[0];
+ if (item.label) {
+ title = item.label;
+ } else if (item.xLabel) {
+ title = item.xLabel;
+ } else if (labelCount > 0 && item.index < labelCount) {
+ title = labels[item.index];
+ }
+ }
+
+ return title;
+ },
+ afterTitle: helpers$1.noop,
+
+ // Args are: (tooltipItems, data)
+ beforeBody: helpers$1.noop,
+
+ // Args are: (tooltipItem, data)
+ beforeLabel: helpers$1.noop,
+ label: function(tooltipItem, data) {
+ var label = data.datasets[tooltipItem.datasetIndex].label || '';
+
+ if (label) {
+ label += ': ';
+ }
+ if (!helpers$1.isNullOrUndef(tooltipItem.value)) {
+ label += tooltipItem.value;
+ } else {
+ label += tooltipItem.yLabel;
+ }
+ return label;
+ },
+ labelColor: function(tooltipItem, chart) {
+ var meta = chart.getDatasetMeta(tooltipItem.datasetIndex);
+ var activeElement = meta.data[tooltipItem.index];
+ var view = activeElement._view;
+ return {
+ borderColor: view.borderColor,
+ backgroundColor: view.backgroundColor
+ };
+ },
+ labelTextColor: function() {
+ return this._options.bodyFontColor;
+ },
+ afterLabel: helpers$1.noop,
+
+ // Args are: (tooltipItems, data)
+ afterBody: helpers$1.noop,
+
+ // Args are: (tooltipItems, data)
+ beforeFooter: helpers$1.noop,
+ footer: helpers$1.noop,
+ afterFooter: helpers$1.noop
+ }
+ }
+});
+
+var positioners = {
+ /**
+ * Average mode places the tooltip at the average position of the elements shown
+ * @function Chart.Tooltip.positioners.average
+ * @param elements {ChartElement[]} the elements being displayed in the tooltip
+ * @returns {object} tooltip position
+ */
+ average: function(elements) {
+ if (!elements.length) {
+ return false;
+ }
+
+ var i, len;
+ var x = 0;
+ var y = 0;
+ var count = 0;
+
+ for (i = 0, len = elements.length; i < len; ++i) {
+ var el = elements[i];
+ if (el && el.hasValue()) {
+ var pos = el.tooltipPosition();
+ x += pos.x;
+ y += pos.y;
+ ++count;
+ }
+ }
+
+ return {
+ x: x / count,
+ y: y / count
+ };
+ },
+
+ /**
+ * Gets the tooltip position nearest of the item nearest to the event position
+ * @function Chart.Tooltip.positioners.nearest
+ * @param elements {Chart.Element[]} the tooltip elements
+ * @param eventPosition {object} the position of the event in canvas coordinates
+ * @returns {object} the tooltip position
+ */
+ nearest: function(elements, eventPosition) {
+ var x = eventPosition.x;
+ var y = eventPosition.y;
+ var minDistance = Number.POSITIVE_INFINITY;
+ var i, len, nearestElement;
+
+ for (i = 0, len = elements.length; i < len; ++i) {
+ var el = elements[i];
+ if (el && el.hasValue()) {
+ var center = el.getCenterPoint();
+ var d = helpers$1.distanceBetweenPoints(eventPosition, center);
+
+ if (d < minDistance) {
+ minDistance = d;
+ nearestElement = el;
+ }
+ }
+ }
+
+ if (nearestElement) {
+ var tp = nearestElement.tooltipPosition();
+ x = tp.x;
+ y = tp.y;
+ }
+
+ return {
+ x: x,
+ y: y
+ };
+ }
+};
+
+// Helper to push or concat based on if the 2nd parameter is an array or not
+function pushOrConcat(base, toPush) {
+ if (toPush) {
+ if (helpers$1.isArray(toPush)) {
+ // base = base.concat(toPush);
+ Array.prototype.push.apply(base, toPush);
+ } else {
+ base.push(toPush);
+ }
+ }
+
+ return base;
+}
+
+/**
+ * Returns array of strings split by newline
+ * @param {string} value - The value to split by newline.
+ * @returns {string[]} value if newline present - Returned from String split() method
+ * @function
+ */
+function splitNewlines(str) {
+ if ((typeof str === 'string' || str instanceof String) && str.indexOf('\n') > -1) {
+ return str.split('\n');
+ }
+ return str;
+}
+
+
+/**
+ * Private helper to create a tooltip item model
+ * @param element - the chart element (point, arc, bar) to create the tooltip item for
+ * @return new tooltip item
+ */
+function createTooltipItem(element) {
+ var xScale = element._xScale;
+ var yScale = element._yScale || element._scale; // handle radar || polarArea charts
+ var index = element._index;
+ var datasetIndex = element._datasetIndex;
+ var controller = element._chart.getDatasetMeta(datasetIndex).controller;
+ var indexScale = controller._getIndexScale();
+ var valueScale = controller._getValueScale();
+
+ return {
+ xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '',
+ yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '',
+ label: indexScale ? '' + indexScale.getLabelForIndex(index, datasetIndex) : '',
+ value: valueScale ? '' + valueScale.getLabelForIndex(index, datasetIndex) : '',
+ index: index,
+ datasetIndex: datasetIndex,
+ x: element._model.x,
+ y: element._model.y
+ };
+}
+
+/**
+ * Helper to get the reset model for the tooltip
+ * @param tooltipOpts {object} the tooltip options
+ */
+function getBaseModel(tooltipOpts) {
+ var globalDefaults = core_defaults.global;
+
+ return {
+ // Positioning
+ xPadding: tooltipOpts.xPadding,
+ yPadding: tooltipOpts.yPadding,
+ xAlign: tooltipOpts.xAlign,
+ yAlign: tooltipOpts.yAlign,
+
+ // Body
+ bodyFontColor: tooltipOpts.bodyFontColor,
+ _bodyFontFamily: valueOrDefault$7(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily),
+ _bodyFontStyle: valueOrDefault$7(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle),
+ _bodyAlign: tooltipOpts.bodyAlign,
+ bodyFontSize: valueOrDefault$7(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize),
+ bodySpacing: tooltipOpts.bodySpacing,
+
+ // Title
+ titleFontColor: tooltipOpts.titleFontColor,
+ _titleFontFamily: valueOrDefault$7(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily),
+ _titleFontStyle: valueOrDefault$7(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle),
+ titleFontSize: valueOrDefault$7(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize),
+ _titleAlign: tooltipOpts.titleAlign,
+ titleSpacing: tooltipOpts.titleSpacing,
+ titleMarginBottom: tooltipOpts.titleMarginBottom,
+
+ // Footer
+ footerFontColor: tooltipOpts.footerFontColor,
+ _footerFontFamily: valueOrDefault$7(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily),
+ _footerFontStyle: valueOrDefault$7(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle),
+ footerFontSize: valueOrDefault$7(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize),
+ _footerAlign: tooltipOpts.footerAlign,
+ footerSpacing: tooltipOpts.footerSpacing,
+ footerMarginTop: tooltipOpts.footerMarginTop,
+
+ // Appearance
+ caretSize: tooltipOpts.caretSize,
+ cornerRadius: tooltipOpts.cornerRadius,
+ backgroundColor: tooltipOpts.backgroundColor,
+ opacity: 0,
+ legendColorBackground: tooltipOpts.multiKeyBackground,
+ displayColors: tooltipOpts.displayColors,
+ borderColor: tooltipOpts.borderColor,
+ borderWidth: tooltipOpts.borderWidth
+ };
+}
+
+/**
+ * Get the size of the tooltip
+ */
+function getTooltipSize(tooltip, model) {
+ var ctx = tooltip._chart.ctx;
+
+ var height = model.yPadding * 2; // Tooltip Padding
+ var width = 0;
+
+ // Count of all lines in the body
+ var body = model.body;
+ var combinedBodyLength = body.reduce(function(count, bodyItem) {
+ return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length;
+ }, 0);
+ combinedBodyLength += model.beforeBody.length + model.afterBody.length;
+
+ var titleLineCount = model.title.length;
+ var footerLineCount = model.footer.length;
+ var titleFontSize = model.titleFontSize;
+ var bodyFontSize = model.bodyFontSize;
+ var footerFontSize = model.footerFontSize;
+
+ height += titleLineCount * titleFontSize; // Title Lines
+ height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing
+ height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin
+ height += combinedBodyLength * bodyFontSize; // Body Lines
+ height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing
+ height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin
+ height += footerLineCount * (footerFontSize); // Footer Lines
+ height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing
+
+ // Title width
+ var widthPadding = 0;
+ var maxLineWidth = function(line) {
+ width = Math.max(width, ctx.measureText(line).width + widthPadding);
+ };
+
+ ctx.font = helpers$1.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily);
+ helpers$1.each(model.title, maxLineWidth);
+
+ // Body width
+ ctx.font = helpers$1.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily);
+ helpers$1.each(model.beforeBody.concat(model.afterBody), maxLineWidth);
+
+ // Body lines may include some extra width due to the color box
+ widthPadding = model.displayColors ? (bodyFontSize + 2) : 0;
+ helpers$1.each(body, function(bodyItem) {
+ helpers$1.each(bodyItem.before, maxLineWidth);
+ helpers$1.each(bodyItem.lines, maxLineWidth);
+ helpers$1.each(bodyItem.after, maxLineWidth);
+ });
+
+ // Reset back to 0
+ widthPadding = 0;
+
+ // Footer width
+ ctx.font = helpers$1.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily);
+ helpers$1.each(model.footer, maxLineWidth);
+
+ // Add padding
+ width += 2 * model.xPadding;
+
+ return {
+ width: width,
+ height: height
+ };
+}
+
+/**
+ * Helper to get the alignment of a tooltip given the size
+ */
+function determineAlignment(tooltip, size) {
+ var model = tooltip._model;
+ var chart = tooltip._chart;
+ var chartArea = tooltip._chart.chartArea;
+ var xAlign = 'center';
+ var yAlign = 'center';
+
+ if (model.y < size.height) {
+ yAlign = 'top';
+ } else if (model.y > (chart.height - size.height)) {
+ yAlign = 'bottom';
+ }
+
+ var lf, rf; // functions to determine left, right alignment
+ var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart
+ var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges
+ var midX = (chartArea.left + chartArea.right) / 2;
+ var midY = (chartArea.top + chartArea.bottom) / 2;
+
+ if (yAlign === 'center') {
+ lf = function(x) {
+ return x <= midX;
+ };
+ rf = function(x) {
+ return x > midX;
+ };
+ } else {
+ lf = function(x) {
+ return x <= (size.width / 2);
+ };
+ rf = function(x) {
+ return x >= (chart.width - (size.width / 2));
+ };
+ }
+
+ olf = function(x) {
+ return x + size.width + model.caretSize + model.caretPadding > chart.width;
+ };
+ orf = function(x) {
+ return x - size.width - model.caretSize - model.caretPadding < 0;
+ };
+ yf = function(y) {
+ return y <= midY ? 'top' : 'bottom';
+ };
+
+ if (lf(model.x)) {
+ xAlign = 'left';
+
+ // Is tooltip too wide and goes over the right side of the chart.?
+ if (olf(model.x)) {
+ xAlign = 'center';
+ yAlign = yf(model.y);
+ }
+ } else if (rf(model.x)) {
+ xAlign = 'right';
+
+ // Is tooltip too wide and goes outside left edge of canvas?
+ if (orf(model.x)) {
+ xAlign = 'center';
+ yAlign = yf(model.y);
+ }
+ }
+
+ var opts = tooltip._options;
+ return {
+ xAlign: opts.xAlign ? opts.xAlign : xAlign,
+ yAlign: opts.yAlign ? opts.yAlign : yAlign
+ };
+}
+
+/**
+ * Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment
+ */
+function getBackgroundPoint(vm, size, alignment, chart) {
+ // Background Position
+ var x = vm.x;
+ var y = vm.y;
+
+ var caretSize = vm.caretSize;
+ var caretPadding = vm.caretPadding;
+ var cornerRadius = vm.cornerRadius;
+ var xAlign = alignment.xAlign;
+ var yAlign = alignment.yAlign;
+ var paddingAndSize = caretSize + caretPadding;
+ var radiusAndPadding = cornerRadius + caretPadding;
+
+ if (xAlign === 'right') {
+ x -= size.width;
+ } else if (xAlign === 'center') {
+ x -= (size.width / 2);
+ if (x + size.width > chart.width) {
+ x = chart.width - size.width;
+ }
+ if (x < 0) {
+ x = 0;
+ }
+ }
+
+ if (yAlign === 'top') {
+ y += paddingAndSize;
+ } else if (yAlign === 'bottom') {
+ y -= size.height + paddingAndSize;
+ } else {
+ y -= (size.height / 2);
+ }
+
+ if (yAlign === 'center') {
+ if (xAlign === 'left') {
+ x += paddingAndSize;
+ } else if (xAlign === 'right') {
+ x -= paddingAndSize;
+ }
+ } else if (xAlign === 'left') {
+ x -= radiusAndPadding;
+ } else if (xAlign === 'right') {
+ x += radiusAndPadding;
+ }
+
+ return {
+ x: x,
+ y: y
+ };
+}
+
+function getAlignedX(vm, align) {
+ return align === 'center'
+ ? vm.x + vm.width / 2
+ : align === 'right'
+ ? vm.x + vm.width - vm.xPadding
+ : vm.x + vm.xPadding;
+}
+
+/**
+ * Helper to build before and after body lines
+ */
+function getBeforeAfterBodyLines(callback) {
+ return pushOrConcat([], splitNewlines(callback));
+}
+
+var exports$3 = core_element.extend({
+ initialize: function() {
+ this._model = getBaseModel(this._options);
+ this._lastActive = [];
+ },
+
+ // Get the title
+ // Args are: (tooltipItem, data)
+ getTitle: function() {
+ var me = this;
+ var opts = me._options;
+ var callbacks = opts.callbacks;
+
+ var beforeTitle = callbacks.beforeTitle.apply(me, arguments);
+ var title = callbacks.title.apply(me, arguments);
+ var afterTitle = callbacks.afterTitle.apply(me, arguments);
+
+ var lines = [];
+ lines = pushOrConcat(lines, splitNewlines(beforeTitle));
+ lines = pushOrConcat(lines, splitNewlines(title));
+ lines = pushOrConcat(lines, splitNewlines(afterTitle));
+
+ return lines;
+ },
+
+ // Args are: (tooltipItem, data)
+ getBeforeBody: function() {
+ return getBeforeAfterBodyLines(this._options.callbacks.beforeBody.apply(this, arguments));
+ },
+
+ // Args are: (tooltipItem, data)
+ getBody: function(tooltipItems, data) {
+ var me = this;
+ var callbacks = me._options.callbacks;
+ var bodyItems = [];
+
+ helpers$1.each(tooltipItems, function(tooltipItem) {
+ var bodyItem = {
+ before: [],
+ lines: [],
+ after: []
+ };
+ pushOrConcat(bodyItem.before, splitNewlines(callbacks.beforeLabel.call(me, tooltipItem, data)));
+ pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data));
+ pushOrConcat(bodyItem.after, splitNewlines(callbacks.afterLabel.call(me, tooltipItem, data)));
+
+ bodyItems.push(bodyItem);
+ });
+
+ return bodyItems;
+ },
+
+ // Args are: (tooltipItem, data)
+ getAfterBody: function() {
+ return getBeforeAfterBodyLines(this._options.callbacks.afterBody.apply(this, arguments));
+ },
+
+ // Get the footer and beforeFooter and afterFooter lines
+ // Args are: (tooltipItem, data)
+ getFooter: function() {
+ var me = this;
+ var callbacks = me._options.callbacks;
+
+ var beforeFooter = callbacks.beforeFooter.apply(me, arguments);
+ var footer = callbacks.footer.apply(me, arguments);
+ var afterFooter = callbacks.afterFooter.apply(me, arguments);
+
+ var lines = [];
+ lines = pushOrConcat(lines, splitNewlines(beforeFooter));
+ lines = pushOrConcat(lines, splitNewlines(footer));
+ lines = pushOrConcat(lines, splitNewlines(afterFooter));
+
+ return lines;
+ },
+
+ update: function(changed) {
+ var me = this;
+ var opts = me._options;
+
+ // Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition
+ // that does _view = _model if ease === 1. This causes the 2nd tooltip update to set properties in both the view and model at the same time
+ // which breaks any animations.
+ var existingModel = me._model;
+ var model = me._model = getBaseModel(opts);
+ var active = me._active;
+
+ var data = me._data;
+
+ // In the case where active.length === 0 we need to keep these at existing values for good animations
+ var alignment = {
+ xAlign: existingModel.xAlign,
+ yAlign: existingModel.yAlign
+ };
+ var backgroundPoint = {
+ x: existingModel.x,
+ y: existingModel.y
+ };
+ var tooltipSize = {
+ width: existingModel.width,
+ height: existingModel.height
+ };
+ var tooltipPosition = {
+ x: existingModel.caretX,
+ y: existingModel.caretY
+ };
+
+ var i, len;
+
+ if (active.length) {
+ model.opacity = 1;
+
+ var labelColors = [];
+ var labelTextColors = [];
+ tooltipPosition = positioners[opts.position].call(me, active, me._eventPosition);
+
+ var tooltipItems = [];
+ for (i = 0, len = active.length; i < len; ++i) {
+ tooltipItems.push(createTooltipItem(active[i]));
+ }
+
+ // If the user provided a filter function, use it to modify the tooltip items
+ if (opts.filter) {
+ tooltipItems = tooltipItems.filter(function(a) {
+ return opts.filter(a, data);
+ });
+ }
+
+ // If the user provided a sorting function, use it to modify the tooltip items
+ if (opts.itemSort) {
+ tooltipItems = tooltipItems.sort(function(a, b) {
+ return opts.itemSort(a, b, data);
+ });
+ }
+
+ // Determine colors for boxes
+ helpers$1.each(tooltipItems, function(tooltipItem) {
+ labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, me._chart));
+ labelTextColors.push(opts.callbacks.labelTextColor.call(me, tooltipItem, me._chart));
+ });
+
+
+ // Build the Text Lines
+ model.title = me.getTitle(tooltipItems, data);
+ model.beforeBody = me.getBeforeBody(tooltipItems, data);
+ model.body = me.getBody(tooltipItems, data);
+ model.afterBody = me.getAfterBody(tooltipItems, data);
+ model.footer = me.getFooter(tooltipItems, data);
+
+ // Initial positioning and colors
+ model.x = tooltipPosition.x;
+ model.y = tooltipPosition.y;
+ model.caretPadding = opts.caretPadding;
+ model.labelColors = labelColors;
+ model.labelTextColors = labelTextColors;
+
+ // data points
+ model.dataPoints = tooltipItems;
+
+ // We need to determine alignment of the tooltip
+ tooltipSize = getTooltipSize(this, model);
+ alignment = determineAlignment(this, tooltipSize);
+ // Final Size and Position
+ backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment, me._chart);
+ } else {
+ model.opacity = 0;
+ }
+
+ model.xAlign = alignment.xAlign;
+ model.yAlign = alignment.yAlign;
+ model.x = backgroundPoint.x;
+ model.y = backgroundPoint.y;
+ model.width = tooltipSize.width;
+ model.height = tooltipSize.height;
+
+ // Point where the caret on the tooltip points to
+ model.caretX = tooltipPosition.x;
+ model.caretY = tooltipPosition.y;
+
+ me._model = model;
+
+ if (changed && opts.custom) {
+ opts.custom.call(me, model);
+ }
+
+ return me;
+ },
+
+ drawCaret: function(tooltipPoint, size) {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
+ var caretPosition = this.getCaretPosition(tooltipPoint, size, vm);
+
+ ctx.lineTo(caretPosition.x1, caretPosition.y1);
+ ctx.lineTo(caretPosition.x2, caretPosition.y2);
+ ctx.lineTo(caretPosition.x3, caretPosition.y3);
+ },
+ getCaretPosition: function(tooltipPoint, size, vm) {
+ var x1, x2, x3, y1, y2, y3;
+ var caretSize = vm.caretSize;
+ var cornerRadius = vm.cornerRadius;
+ var xAlign = vm.xAlign;
+ var yAlign = vm.yAlign;
+ var ptX = tooltipPoint.x;
+ var ptY = tooltipPoint.y;
+ var width = size.width;
+ var height = size.height;
+
+ if (yAlign === 'center') {
+ y2 = ptY + (height / 2);
+
+ if (xAlign === 'left') {
+ x1 = ptX;
+ x2 = x1 - caretSize;
+ x3 = x1;
+
+ y1 = y2 + caretSize;
+ y3 = y2 - caretSize;
+ } else {
+ x1 = ptX + width;
+ x2 = x1 + caretSize;
+ x3 = x1;
+
+ y1 = y2 - caretSize;
+ y3 = y2 + caretSize;
+ }
+ } else {
+ if (xAlign === 'left') {
+ x2 = ptX + cornerRadius + (caretSize);
+ x1 = x2 - caretSize;
+ x3 = x2 + caretSize;
+ } else if (xAlign === 'right') {
+ x2 = ptX + width - cornerRadius - caretSize;
+ x1 = x2 - caretSize;
+ x3 = x2 + caretSize;
+ } else {
+ x2 = vm.caretX;
+ x1 = x2 - caretSize;
+ x3 = x2 + caretSize;
+ }
+ if (yAlign === 'top') {
+ y1 = ptY;
+ y2 = y1 - caretSize;
+ y3 = y1;
+ } else {
+ y1 = ptY + height;
+ y2 = y1 + caretSize;
+ y3 = y1;
+ // invert drawing order
+ var tmp = x3;
+ x3 = x1;
+ x1 = tmp;
+ }
+ }
+ return {x1: x1, x2: x2, x3: x3, y1: y1, y2: y2, y3: y3};
+ },
+
+ drawTitle: function(pt, vm, ctx) {
+ var title = vm.title;
+
+ if (title.length) {
+ pt.x = getAlignedX(vm, vm._titleAlign);
+
+ ctx.textAlign = vm._titleAlign;
+ ctx.textBaseline = 'top';
+
+ var titleFontSize = vm.titleFontSize;
+ var titleSpacing = vm.titleSpacing;
+
+ ctx.fillStyle = vm.titleFontColor;
+ ctx.font = helpers$1.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily);
+
+ var i, len;
+ for (i = 0, len = title.length; i < len; ++i) {
+ ctx.fillText(title[i], pt.x, pt.y);
+ pt.y += titleFontSize + titleSpacing; // Line Height and spacing
+
+ if (i + 1 === title.length) {
+ pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing
+ }
+ }
+ }
+ },
+
+ drawBody: function(pt, vm, ctx) {
+ var bodyFontSize = vm.bodyFontSize;
+ var bodySpacing = vm.bodySpacing;
+ var bodyAlign = vm._bodyAlign;
+ var body = vm.body;
+ var drawColorBoxes = vm.displayColors;
+ var labelColors = vm.labelColors;
+ var xLinePadding = 0;
+ var colorX = drawColorBoxes ? getAlignedX(vm, 'left') : 0;
+ var textColor;
+
+ ctx.textAlign = bodyAlign;
+ ctx.textBaseline = 'top';
+ ctx.font = helpers$1.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);
+
+ pt.x = getAlignedX(vm, bodyAlign);
+
+ // Before Body
+ var fillLineOfText = function(line) {
+ ctx.fillText(line, pt.x + xLinePadding, pt.y);
+ pt.y += bodyFontSize + bodySpacing;
+ };
+
+ // Before body lines
+ ctx.fillStyle = vm.bodyFontColor;
+ helpers$1.each(vm.beforeBody, fillLineOfText);
+
+ xLinePadding = drawColorBoxes && bodyAlign !== 'right'
+ ? bodyAlign === 'center' ? (bodyFontSize / 2 + 1) : (bodyFontSize + 2)
+ : 0;
+
+ // Draw body lines now
+ helpers$1.each(body, function(bodyItem, i) {
+ textColor = vm.labelTextColors[i];
+ ctx.fillStyle = textColor;
+ helpers$1.each(bodyItem.before, fillLineOfText);
+
+ helpers$1.each(bodyItem.lines, function(line) {
+ // Draw Legend-like boxes if needed
+ if (drawColorBoxes) {
+ // Fill a white rect so that colours merge nicely if the opacity is < 1
+ ctx.fillStyle = vm.legendColorBackground;
+ ctx.fillRect(colorX, pt.y, bodyFontSize, bodyFontSize);
+
+ // Border
+ ctx.lineWidth = 1;
+ ctx.strokeStyle = labelColors[i].borderColor;
+ ctx.strokeRect(colorX, pt.y, bodyFontSize, bodyFontSize);
+
+ // Inner square
+ ctx.fillStyle = labelColors[i].backgroundColor;
+ ctx.fillRect(colorX + 1, pt.y + 1, bodyFontSize - 2, bodyFontSize - 2);
+ ctx.fillStyle = textColor;
+ }
+
+ fillLineOfText(line);
+ });
+
+ helpers$1.each(bodyItem.after, fillLineOfText);
+ });
+
+ // Reset back to 0 for after body
+ xLinePadding = 0;
+
+ // After body lines
+ helpers$1.each(vm.afterBody, fillLineOfText);
+ pt.y -= bodySpacing; // Remove last body spacing
+ },
+
+ drawFooter: function(pt, vm, ctx) {
+ var footer = vm.footer;
+
+ if (footer.length) {
+ pt.x = getAlignedX(vm, vm._footerAlign);
+ pt.y += vm.footerMarginTop;
+
+ ctx.textAlign = vm._footerAlign;
+ ctx.textBaseline = 'top';
+
+ ctx.fillStyle = vm.footerFontColor;
+ ctx.font = helpers$1.fontString(vm.footerFontSize, vm._footerFontStyle, vm._footerFontFamily);
+
+ helpers$1.each(footer, function(line) {
+ ctx.fillText(line, pt.x, pt.y);
+ pt.y += vm.footerFontSize + vm.footerSpacing;
+ });
+ }
+ },
+
+ drawBackground: function(pt, vm, ctx, tooltipSize) {
+ ctx.fillStyle = vm.backgroundColor;
+ ctx.strokeStyle = vm.borderColor;
+ ctx.lineWidth = vm.borderWidth;
+ var xAlign = vm.xAlign;
+ var yAlign = vm.yAlign;
+ var x = pt.x;
+ var y = pt.y;
+ var width = tooltipSize.width;
+ var height = tooltipSize.height;
+ var radius = vm.cornerRadius;
+
+ ctx.beginPath();
+ ctx.moveTo(x + radius, y);
+ if (yAlign === 'top') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x + width - radius, y);
+ ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
+ if (yAlign === 'center' && xAlign === 'right') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x + width, y + height - radius);
+ ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
+ if (yAlign === 'bottom') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x + radius, y + height);
+ ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
+ if (yAlign === 'center' && xAlign === 'left') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x, y + radius);
+ ctx.quadraticCurveTo(x, y, x + radius, y);
+ ctx.closePath();
+
+ ctx.fill();
+
+ if (vm.borderWidth > 0) {
+ ctx.stroke();
+ }
+ },
+
+ draw: function() {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
+
+ if (vm.opacity === 0) {
+ return;
+ }
+
+ var tooltipSize = {
+ width: vm.width,
+ height: vm.height
+ };
+ var pt = {
+ x: vm.x,
+ y: vm.y
+ };
+
+ // IE11/Edge does not like very small opacities, so snap to 0
+ var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity;
+
+ // Truthy/falsey value for empty tooltip
+ var hasTooltipContent = vm.title.length || vm.beforeBody.length || vm.body.length || vm.afterBody.length || vm.footer.length;
+
+ if (this._options.enabled && hasTooltipContent) {
+ ctx.save();
+ ctx.globalAlpha = opacity;
+
+ // Draw Background
+ this.drawBackground(pt, vm, ctx, tooltipSize);
+
+ // Draw Title, Body, and Footer
+ pt.y += vm.yPadding;
+
+ // Titles
+ this.drawTitle(pt, vm, ctx);
+
+ // Body
+ this.drawBody(pt, vm, ctx);
+
+ // Footer
+ this.drawFooter(pt, vm, ctx);
+
+ ctx.restore();
+ }
+ },
+
+ /**
+ * Handle an event
+ * @private
+ * @param {IEvent} event - The event to handle
+ * @returns {boolean} true if the tooltip changed
+ */
+ handleEvent: function(e) {
+ var me = this;
+ var options = me._options;
+ var changed = false;
+
+ me._lastActive = me._lastActive || [];
+
+ // Find Active Elements for tooltips
+ if (e.type === 'mouseout') {
+ me._active = [];
+ } else {
+ me._active = me._chart.getElementsAtEventForMode(e, options.mode, options);
+ }
+
+ // Remember Last Actives
+ changed = !helpers$1.arrayEquals(me._active, me._lastActive);
+
+ // Only handle target event on tooltip change
+ if (changed) {
+ me._lastActive = me._active;
+
+ if (options.enabled || options.custom) {
+ me._eventPosition = {
+ x: e.x,
+ y: e.y
+ };
+
+ me.update(true);
+ me.pivot();
+ }
+ }
+
+ return changed;
+ }
+});
+
+/**
+ * @namespace Chart.Tooltip.positioners
+ */
+var positioners_1 = positioners;
+
+var core_tooltip = exports$3;
+core_tooltip.positioners = positioners_1;
+
+var valueOrDefault$8 = helpers$1.valueOrDefault;
+
+core_defaults._set('global', {
+ elements: {},
+ events: [
+ 'mousemove',
+ 'mouseout',
+ 'click',
+ 'touchstart',
+ 'touchmove'
+ ],
+ hover: {
+ onHover: null,
+ mode: 'nearest',
+ intersect: true,
+ animationDuration: 400
+ },
+ onClick: null,
+ maintainAspectRatio: true,
+ responsive: true,
+ responsiveAnimationDuration: 0
+});
+
+/**
+ * Recursively merge the given config objects representing the `scales` option
+ * by incorporating scale defaults in `xAxes` and `yAxes` array items, then
+ * returns a deep copy of the result, thus doesn't alter inputs.
+ */
+function mergeScaleConfig(/* config objects ... */) {
+ return helpers$1.merge({}, [].slice.call(arguments), {
+ merger: function(key, target, source, options) {
+ if (key === 'xAxes' || key === 'yAxes') {
+ var slen = source[key].length;
+ var i, type, scale;
+
+ if (!target[key]) {
+ target[key] = [];
+ }
+
+ for (i = 0; i < slen; ++i) {
+ scale = source[key][i];
+ type = valueOrDefault$8(scale.type, key === 'xAxes' ? 'category' : 'linear');
+
+ if (i >= target[key].length) {
+ target[key].push({});
+ }
+
+ if (!target[key][i].type || (scale.type && scale.type !== target[key][i].type)) {
+ // new/untyped scale or type changed: let's apply the new defaults
+ // then merge source scale to correctly overwrite the defaults.
+ helpers$1.merge(target[key][i], [core_scaleService.getScaleDefaults(type), scale]);
+ } else {
+ // scales type are the same
+ helpers$1.merge(target[key][i], scale);
+ }
+ }
+ } else {
+ helpers$1._merger(key, target, source, options);
+ }
+ }
+ });
+}
+
+/**
+ * Recursively merge the given config objects as the root options by handling
+ * default scale options for the `scales` and `scale` properties, then returns
+ * a deep copy of the result, thus doesn't alter inputs.
+ */
+function mergeConfig(/* config objects ... */) {
+ return helpers$1.merge({}, [].slice.call(arguments), {
+ merger: function(key, target, source, options) {
+ var tval = target[key] || {};
+ var sval = source[key];
+
+ if (key === 'scales') {
+ // scale config merging is complex. Add our own function here for that
+ target[key] = mergeScaleConfig(tval, sval);
+ } else if (key === 'scale') {
+ // used in polar area & radar charts since there is only one scale
+ target[key] = helpers$1.merge(tval, [core_scaleService.getScaleDefaults(sval.type), sval]);
+ } else {
+ helpers$1._merger(key, target, source, options);
+ }
+ }
+ });
+}
+
+function initConfig(config) {
+ config = config || {};
+
+ // Do NOT use mergeConfig for the data object because this method merges arrays
+ // and so would change references to labels and datasets, preventing data updates.
+ var data = config.data = config.data || {};
+ data.datasets = data.datasets || [];
+ data.labels = data.labels || [];
+
+ config.options = mergeConfig(
+ core_defaults.global,
+ core_defaults[config.type],
+ config.options || {});
+
+ return config;
+}
+
+function updateConfig(chart) {
+ var newOptions = chart.options;
+
+ helpers$1.each(chart.scales, function(scale) {
+ core_layouts.removeBox(chart, scale);
+ });
+
+ newOptions = mergeConfig(
+ core_defaults.global,
+ core_defaults[chart.config.type],
+ newOptions);
+
+ chart.options = chart.config.options = newOptions;
+ chart.ensureScalesHaveIDs();
+ chart.buildOrUpdateScales();
+
+ // Tooltip
+ chart.tooltip._options = newOptions.tooltips;
+ chart.tooltip.initialize();
+}
+
+function positionIsHorizontal(position) {
+ return position === 'top' || position === 'bottom';
+}
+
+var Chart = function(item, config) {
+ this.construct(item, config);
+ return this;
+};
+
+helpers$1.extend(Chart.prototype, /** @lends Chart */ {
+ /**
+ * @private
+ */
+ construct: function(item, config) {
+ var me = this;
+
+ config = initConfig(config);
+
+ var context = platform.acquireContext(item, config);
+ var canvas = context && context.canvas;
+ var height = canvas && canvas.height;
+ var width = canvas && canvas.width;
+
+ me.id = helpers$1.uid();
+ me.ctx = context;
+ me.canvas = canvas;
+ me.config = config;
+ me.width = width;
+ me.height = height;
+ me.aspectRatio = height ? width / height : null;
+ me.options = config.options;
+ me._bufferedRender = false;
+
+ /**
+ * Provided for backward compatibility, Chart and Chart.Controller have been merged,
+ * the "instance" still need to be defined since it might be called from plugins.
+ * @prop Chart#chart
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ * @private
+ */
+ me.chart = me;
+ me.controller = me; // chart.chart.controller #inception
+
+ // Add the chart instance to the global namespace
+ Chart.instances[me.id] = me;
+
+ // Define alias to the config data: `chart.data === chart.config.data`
+ Object.defineProperty(me, 'data', {
+ get: function() {
+ return me.config.data;
+ },
+ set: function(value) {
+ me.config.data = value;
+ }
+ });
+
+ if (!context || !canvas) {
+ // The given item is not a compatible context2d element, let's return before finalizing
+ // the chart initialization but after setting basic chart / controller properties that
+ // can help to figure out that the chart is not valid (e.g chart.canvas !== null);
+ // https://github.com/chartjs/Chart.js/issues/2807
+ console.error("Failed to create chart: can't acquire context from the given item");
+ return;
+ }
+
+ me.initialize();
+ me.update();
+ },
+
+ /**
+ * @private
+ */
+ initialize: function() {
+ var me = this;
+
+ // Before init plugin notification
+ core_plugins.notify(me, 'beforeInit');
+
+ helpers$1.retinaScale(me, me.options.devicePixelRatio);
+
+ me.bindEvents();
+
+ if (me.options.responsive) {
+ // Initial resize before chart draws (must be silent to preserve initial animations).
+ me.resize(true);
+ }
+
+ // Make sure scales have IDs and are built before we build any controllers.
+ me.ensureScalesHaveIDs();
+ me.buildOrUpdateScales();
+ me.initToolTip();
+
+ // After init plugin notification
+ core_plugins.notify(me, 'afterInit');
+
+ return me;
+ },
+
+ clear: function() {
+ helpers$1.canvas.clear(this);
+ return this;
+ },
+
+ stop: function() {
+ // Stops any current animation loop occurring
+ core_animations.cancelAnimation(this);
+ return this;
+ },
+
+ resize: function(silent) {
+ var me = this;
+ var options = me.options;
+ var canvas = me.canvas;
+ var aspectRatio = (options.maintainAspectRatio && me.aspectRatio) || null;
+
+ // the canvas render width and height will be casted to integers so make sure that
+ // the canvas display style uses the same integer values to avoid blurring effect.
+
+ // Set to 0 instead of canvas.size because the size defaults to 300x150 if the element is collapsed
+ var newWidth = Math.max(0, Math.floor(helpers$1.getMaximumWidth(canvas)));
+ var newHeight = Math.max(0, Math.floor(aspectRatio ? newWidth / aspectRatio : helpers$1.getMaximumHeight(canvas)));
+
+ if (me.width === newWidth && me.height === newHeight) {
+ return;
+ }
+
+ canvas.width = me.width = newWidth;
+ canvas.height = me.height = newHeight;
+ canvas.style.width = newWidth + 'px';
+ canvas.style.height = newHeight + 'px';
+
+ helpers$1.retinaScale(me, options.devicePixelRatio);
+
+ if (!silent) {
+ // Notify any plugins about the resize
+ var newSize = {width: newWidth, height: newHeight};
+ core_plugins.notify(me, 'resize', [newSize]);
+
+ // Notify of resize
+ if (options.onResize) {
+ options.onResize(me, newSize);
+ }
+
+ me.stop();
+ me.update({
+ duration: options.responsiveAnimationDuration
+ });
+ }
+ },
+
+ ensureScalesHaveIDs: function() {
+ var options = this.options;
+ var scalesOptions = options.scales || {};
+ var scaleOptions = options.scale;
+
+ helpers$1.each(scalesOptions.xAxes, function(xAxisOptions, index) {
+ xAxisOptions.id = xAxisOptions.id || ('x-axis-' + index);
+ });
+
+ helpers$1.each(scalesOptions.yAxes, function(yAxisOptions, index) {
+ yAxisOptions.id = yAxisOptions.id || ('y-axis-' + index);
+ });
+
+ if (scaleOptions) {
+ scaleOptions.id = scaleOptions.id || 'scale';
+ }
+ },
+
+ /**
+ * Builds a map of scale ID to scale object for future lookup.
+ */
+ buildOrUpdateScales: function() {
+ var me = this;
+ var options = me.options;
+ var scales = me.scales || {};
+ var items = [];
+ var updated = Object.keys(scales).reduce(function(obj, id) {
+ obj[id] = false;
+ return obj;
+ }, {});
+
+ if (options.scales) {
+ items = items.concat(
+ (options.scales.xAxes || []).map(function(xAxisOptions) {
+ return {options: xAxisOptions, dtype: 'category', dposition: 'bottom'};
+ }),
+ (options.scales.yAxes || []).map(function(yAxisOptions) {
+ return {options: yAxisOptions, dtype: 'linear', dposition: 'left'};
+ })
+ );
+ }
+
+ if (options.scale) {
+ items.push({
+ options: options.scale,
+ dtype: 'radialLinear',
+ isDefault: true,
+ dposition: 'chartArea'
+ });
+ }
+
+ helpers$1.each(items, function(item) {
+ var scaleOptions = item.options;
+ var id = scaleOptions.id;
+ var scaleType = valueOrDefault$8(scaleOptions.type, item.dtype);
+
+ if (positionIsHorizontal(scaleOptions.position) !== positionIsHorizontal(item.dposition)) {
+ scaleOptions.position = item.dposition;
+ }
+
+ updated[id] = true;
+ var scale = null;
+ if (id in scales && scales[id].type === scaleType) {
+ scale = scales[id];
+ scale.options = scaleOptions;
+ scale.ctx = me.ctx;
+ scale.chart = me;
+ } else {
+ var scaleClass = core_scaleService.getScaleConstructor(scaleType);
+ if (!scaleClass) {
+ return;
+ }
+ scale = new scaleClass({
+ id: id,
+ type: scaleType,
+ options: scaleOptions,
+ ctx: me.ctx,
+ chart: me
+ });
+ scales[scale.id] = scale;
+ }
+
+ scale.mergeTicksOptions();
+
+ // TODO(SB): I think we should be able to remove this custom case (options.scale)
+ // and consider it as a regular scale part of the "scales"" map only! This would
+ // make the logic easier and remove some useless? custom code.
+ if (item.isDefault) {
+ me.scale = scale;
+ }
+ });
+ // clear up discarded scales
+ helpers$1.each(updated, function(hasUpdated, id) {
+ if (!hasUpdated) {
+ delete scales[id];
+ }
+ });
+
+ me.scales = scales;
+
+ core_scaleService.addScalesToLayout(this);
+ },
+
+ buildOrUpdateControllers: function() {
+ var me = this;
+ var newControllers = [];
+
+ helpers$1.each(me.data.datasets, function(dataset, datasetIndex) {
+ var meta = me.getDatasetMeta(datasetIndex);
+ var type = dataset.type || me.config.type;
+
+ if (meta.type && meta.type !== type) {
+ me.destroyDatasetMeta(datasetIndex);
+ meta = me.getDatasetMeta(datasetIndex);
+ }
+ meta.type = type;
+
+ if (meta.controller) {
+ meta.controller.updateIndex(datasetIndex);
+ meta.controller.linkScales();
+ } else {
+ var ControllerClass = controllers[meta.type];
+ if (ControllerClass === undefined) {
+ throw new Error('"' + meta.type + '" is not a chart type.');
+ }
+
+ meta.controller = new ControllerClass(me, datasetIndex);
+ newControllers.push(meta.controller);
+ }
+ }, me);
+
+ return newControllers;
+ },
+
+ /**
+ * Reset the elements of all datasets
+ * @private
+ */
+ resetElements: function() {
+ var me = this;
+ helpers$1.each(me.data.datasets, function(dataset, datasetIndex) {
+ me.getDatasetMeta(datasetIndex).controller.reset();
+ }, me);
+ },
+
+ /**
+ * Resets the chart back to it's state before the initial animation
+ */
+ reset: function() {
+ this.resetElements();
+ this.tooltip.initialize();
+ },
+
+ update: function(config) {
+ var me = this;
+
+ if (!config || typeof config !== 'object') {
+ // backwards compatibility
+ config = {
+ duration: config,
+ lazy: arguments[1]
+ };
+ }
+
+ updateConfig(me);
+
+ // plugins options references might have change, let's invalidate the cache
+ // https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
+ core_plugins._invalidate(me);
+
+ if (core_plugins.notify(me, 'beforeUpdate') === false) {
+ return;
+ }
+
+ // In case the entire data object changed
+ me.tooltip._data = me.data;
+
+ // Make sure dataset controllers are updated and new controllers are reset
+ var newControllers = me.buildOrUpdateControllers();
+
+ // Make sure all dataset controllers have correct meta data counts
+ helpers$1.each(me.data.datasets, function(dataset, datasetIndex) {
+ me.getDatasetMeta(datasetIndex).controller.buildOrUpdateElements();
+ }, me);
+
+ me.updateLayout();
+
+ // Can only reset the new controllers after the scales have been updated
+ if (me.options.animation && me.options.animation.duration) {
+ helpers$1.each(newControllers, function(controller) {
+ controller.reset();
+ });
+ }
+
+ me.updateDatasets();
+
+ // Need to reset tooltip in case it is displayed with elements that are removed
+ // after update.
+ me.tooltip.initialize();
+
+ // Last active contains items that were previously in the tooltip.
+ // When we reset the tooltip, we need to clear it
+ me.lastActive = [];
+
+ // Do this before render so that any plugins that need final scale updates can use it
+ core_plugins.notify(me, 'afterUpdate');
+
+ if (me._bufferedRender) {
+ me._bufferedRequest = {
+ duration: config.duration,
+ easing: config.easing,
+ lazy: config.lazy
+ };
+ } else {
+ me.render(config);
+ }
+ },
+
+ /**
+ * Updates the chart layout unless a plugin returns `false` to the `beforeLayout`
+ * hook, in which case, plugins will not be called on `afterLayout`.
+ * @private
+ */
+ updateLayout: function() {
+ var me = this;
+
+ if (core_plugins.notify(me, 'beforeLayout') === false) {
+ return;
+ }
+
+ core_layouts.update(this, this.width, this.height);
+
+ /**
+ * Provided for backward compatibility, use `afterLayout` instead.
+ * @method IPlugin#afterScaleUpdate
+ * @deprecated since version 2.5.0
+ * @todo remove at version 3
+ * @private
+ */
+ core_plugins.notify(me, 'afterScaleUpdate');
+ core_plugins.notify(me, 'afterLayout');
+ },
+
+ /**
+ * Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate`
+ * hook, in which case, plugins will not be called on `afterDatasetsUpdate`.
+ * @private
+ */
+ updateDatasets: function() {
+ var me = this;
+
+ if (core_plugins.notify(me, 'beforeDatasetsUpdate') === false) {
+ return;
+ }
+
+ for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
+ me.updateDataset(i);
+ }
+
+ core_plugins.notify(me, 'afterDatasetsUpdate');
+ },
+
+ /**
+ * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate`
+ * hook, in which case, plugins will not be called on `afterDatasetUpdate`.
+ * @private
+ */
+ updateDataset: function(index) {
+ var me = this;
+ var meta = me.getDatasetMeta(index);
+ var args = {
+ meta: meta,
+ index: index
+ };
+
+ if (core_plugins.notify(me, 'beforeDatasetUpdate', [args]) === false) {
+ return;
+ }
+
+ meta.controller.update();
+
+ core_plugins.notify(me, 'afterDatasetUpdate', [args]);
+ },
+
+ render: function(config) {
+ var me = this;
+
+ if (!config || typeof config !== 'object') {
+ // backwards compatibility
+ config = {
+ duration: config,
+ lazy: arguments[1]
+ };
+ }
+
+ var animationOptions = me.options.animation;
+ var duration = valueOrDefault$8(config.duration, animationOptions && animationOptions.duration);
+ var lazy = config.lazy;
+
+ if (core_plugins.notify(me, 'beforeRender') === false) {
+ return;
+ }
+
+ var onComplete = function(animation) {
+ core_plugins.notify(me, 'afterRender');
+ helpers$1.callback(animationOptions && animationOptions.onComplete, [animation], me);
+ };
+
+ if (animationOptions && duration) {
+ var animation = new core_animation({
+ numSteps: duration / 16.66, // 60 fps
+ easing: config.easing || animationOptions.easing,
+
+ render: function(chart, animationObject) {
+ var easingFunction = helpers$1.easing.effects[animationObject.easing];
+ var currentStep = animationObject.currentStep;
+ var stepDecimal = currentStep / animationObject.numSteps;
+
+ chart.draw(easingFunction(stepDecimal), stepDecimal, currentStep);
+ },
+
+ onAnimationProgress: animationOptions.onProgress,
+ onAnimationComplete: onComplete
+ });
+
+ core_animations.addAnimation(me, animation, duration, lazy);
+ } else {
+ me.draw();
+
+ // See https://github.com/chartjs/Chart.js/issues/3781
+ onComplete(new core_animation({numSteps: 0, chart: me}));
+ }
+
+ return me;
+ },
+
+ draw: function(easingValue) {
+ var me = this;
+
+ me.clear();
+
+ if (helpers$1.isNullOrUndef(easingValue)) {
+ easingValue = 1;
+ }
+
+ me.transition(easingValue);
+
+ if (me.width <= 0 || me.height <= 0) {
+ return;
+ }
+
+ if (core_plugins.notify(me, 'beforeDraw', [easingValue]) === false) {
+ return;
+ }
+
+ // Draw all the scales
+ helpers$1.each(me.boxes, function(box) {
+ box.draw(me.chartArea);
+ }, me);
+
+ me.drawDatasets(easingValue);
+ me._drawTooltip(easingValue);
+
+ core_plugins.notify(me, 'afterDraw', [easingValue]);
+ },
+
+ /**
+ * @private
+ */
+ transition: function(easingValue) {
+ var me = this;
+
+ for (var i = 0, ilen = (me.data.datasets || []).length; i < ilen; ++i) {
+ if (me.isDatasetVisible(i)) {
+ me.getDatasetMeta(i).controller.transition(easingValue);
+ }
+ }
+
+ me.tooltip.transition(easingValue);
+ },
+
+ /**
+ * Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw`
+ * hook, in which case, plugins will not be called on `afterDatasetsDraw`.
+ * @private
+ */
+ drawDatasets: function(easingValue) {
+ var me = this;
+
+ if (core_plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) {
+ return;
+ }
+
+ // Draw datasets reversed to support proper line stacking
+ for (var i = (me.data.datasets || []).length - 1; i >= 0; --i) {
+ if (me.isDatasetVisible(i)) {
+ me.drawDataset(i, easingValue);
+ }
+ }
+
+ core_plugins.notify(me, 'afterDatasetsDraw', [easingValue]);
+ },
+
+ /**
+ * Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw`
+ * hook, in which case, plugins will not be called on `afterDatasetDraw`.
+ * @private
+ */
+ drawDataset: function(index, easingValue) {
+ var me = this;
+ var meta = me.getDatasetMeta(index);
+ var args = {
+ meta: meta,
+ index: index,
+ easingValue: easingValue
+ };
+
+ if (core_plugins.notify(me, 'beforeDatasetDraw', [args]) === false) {
+ return;
+ }
+
+ meta.controller.draw(easingValue);
+
+ core_plugins.notify(me, 'afterDatasetDraw', [args]);
+ },
+
+ /**
+ * Draws tooltip unless a plugin returns `false` to the `beforeTooltipDraw`
+ * hook, in which case, plugins will not be called on `afterTooltipDraw`.
+ * @private
+ */
+ _drawTooltip: function(easingValue) {
+ var me = this;
+ var tooltip = me.tooltip;
+ var args = {
+ tooltip: tooltip,
+ easingValue: easingValue
+ };
+
+ if (core_plugins.notify(me, 'beforeTooltipDraw', [args]) === false) {
+ return;
+ }
+
+ tooltip.draw();
+
+ core_plugins.notify(me, 'afterTooltipDraw', [args]);
+ },
+
+ /**
+ * Get the single element that was clicked on
+ * @return An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw
+ */
+ getElementAtEvent: function(e) {
+ return core_interaction.modes.single(this, e);
+ },
+
+ getElementsAtEvent: function(e) {
+ return core_interaction.modes.label(this, e, {intersect: true});
+ },
+
+ getElementsAtXAxis: function(e) {
+ return core_interaction.modes['x-axis'](this, e, {intersect: true});
+ },
+
+ getElementsAtEventForMode: function(e, mode, options) {
+ var method = core_interaction.modes[mode];
+ if (typeof method === 'function') {
+ return method(this, e, options);
+ }
+
+ return [];
+ },
+
+ getDatasetAtEvent: function(e) {
+ return core_interaction.modes.dataset(this, e, {intersect: true});
+ },
+
+ getDatasetMeta: function(datasetIndex) {
+ var me = this;
+ var dataset = me.data.datasets[datasetIndex];
+ if (!dataset._meta) {
+ dataset._meta = {};
+ }
+
+ var meta = dataset._meta[me.id];
+ if (!meta) {
+ meta = dataset._meta[me.id] = {
+ type: null,
+ data: [],
+ dataset: null,
+ controller: null,
+ hidden: null, // See isDatasetVisible() comment
+ xAxisID: null,
+ yAxisID: null
+ };
+ }
+
+ return meta;
+ },
+
+ getVisibleDatasetCount: function() {
+ var count = 0;
+ for (var i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {
+ if (this.isDatasetVisible(i)) {
+ count++;
+ }
+ }
+ return count;
+ },
+
+ isDatasetVisible: function(datasetIndex) {
+ var meta = this.getDatasetMeta(datasetIndex);
+
+ // meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false,
+ // the dataset.hidden value is ignored, else if null, the dataset hidden state is returned.
+ return typeof meta.hidden === 'boolean' ? !meta.hidden : !this.data.datasets[datasetIndex].hidden;
+ },
+
+ generateLegend: function() {
+ return this.options.legendCallback(this);
+ },
+
+ /**
+ * @private
+ */
+ destroyDatasetMeta: function(datasetIndex) {
+ var id = this.id;
+ var dataset = this.data.datasets[datasetIndex];
+ var meta = dataset._meta && dataset._meta[id];
+
+ if (meta) {
+ meta.controller.destroy();
+ delete dataset._meta[id];
+ }
+ },
+
+ destroy: function() {
+ var me = this;
+ var canvas = me.canvas;
+ var i, ilen;
+
+ me.stop();
+
+ // dataset controllers need to cleanup associated data
+ for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
+ me.destroyDatasetMeta(i);
+ }
+
+ if (canvas) {
+ me.unbindEvents();
+ helpers$1.canvas.clear(me);
+ platform.releaseContext(me.ctx);
+ me.canvas = null;
+ me.ctx = null;
+ }
+
+ core_plugins.notify(me, 'destroy');
+
+ delete Chart.instances[me.id];
+ },
+
+ toBase64Image: function() {
+ return this.canvas.toDataURL.apply(this.canvas, arguments);
+ },
+
+ initToolTip: function() {
+ var me = this;
+ me.tooltip = new core_tooltip({
+ _chart: me,
+ _chartInstance: me, // deprecated, backward compatibility
+ _data: me.data,
+ _options: me.options.tooltips
+ }, me);
+ },
+
+ /**
+ * @private
+ */
+ bindEvents: function() {
+ var me = this;
+ var listeners = me._listeners = {};
+ var listener = function() {
+ me.eventHandler.apply(me, arguments);
+ };
+
+ helpers$1.each(me.options.events, function(type) {
+ platform.addEventListener(me, type, listener);
+ listeners[type] = listener;
+ });
+
+ // Elements used to detect size change should not be injected for non responsive charts.
+ // See https://github.com/chartjs/Chart.js/issues/2210
+ if (me.options.responsive) {
+ listener = function() {
+ me.resize();
+ };
+
+ platform.addEventListener(me, 'resize', listener);
+ listeners.resize = listener;
+ }
+ },
+
+ /**
+ * @private
+ */
+ unbindEvents: function() {
+ var me = this;
+ var listeners = me._listeners;
+ if (!listeners) {
+ return;
+ }
+
+ delete me._listeners;
+ helpers$1.each(listeners, function(listener, type) {
+ platform.removeEventListener(me, type, listener);
+ });
+ },
+
+ updateHoverStyle: function(elements, mode, enabled) {
+ var method = enabled ? 'setHoverStyle' : 'removeHoverStyle';
+ var element, i, ilen;
+
+ for (i = 0, ilen = elements.length; i < ilen; ++i) {
+ element = elements[i];
+ if (element) {
+ this.getDatasetMeta(element._datasetIndex).controller[method](element);
+ }
+ }
+ },
+
+ /**
+ * @private
+ */
+ eventHandler: function(e) {
+ var me = this;
+ var tooltip = me.tooltip;
+
+ if (core_plugins.notify(me, 'beforeEvent', [e]) === false) {
+ return;
+ }
+
+ // Buffer any update calls so that renders do not occur
+ me._bufferedRender = true;
+ me._bufferedRequest = null;
+
+ var changed = me.handleEvent(e);
+ // for smooth tooltip animations issue #4989
+ // the tooltip should be the source of change
+ // Animation check workaround:
+ // tooltip._start will be null when tooltip isn't animating
+ if (tooltip) {
+ changed = tooltip._start
+ ? tooltip.handleEvent(e)
+ : changed | tooltip.handleEvent(e);
+ }
+
+ core_plugins.notify(me, 'afterEvent', [e]);
+
+ var bufferedRequest = me._bufferedRequest;
+ if (bufferedRequest) {
+ // If we have an update that was triggered, we need to do a normal render
+ me.render(bufferedRequest);
+ } else if (changed && !me.animating) {
+ // If entering, leaving, or changing elements, animate the change via pivot
+ me.stop();
+
+ // We only need to render at this point. Updating will cause scales to be
+ // recomputed generating flicker & using more memory than necessary.
+ me.render({
+ duration: me.options.hover.animationDuration,
+ lazy: true
+ });
+ }
+
+ me._bufferedRender = false;
+ me._bufferedRequest = null;
+
+ return me;
+ },
+
+ /**
+ * Handle an event
+ * @private
+ * @param {IEvent} event the event to handle
+ * @return {boolean} true if the chart needs to re-render
+ */
+ handleEvent: function(e) {
+ var me = this;
+ var options = me.options || {};
+ var hoverOptions = options.hover;
+ var changed = false;
+
+ me.lastActive = me.lastActive || [];
+
+ // Find Active Elements for hover and tooltips
+ if (e.type === 'mouseout') {
+ me.active = [];
+ } else {
+ me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions);
+ }
+
+ // Invoke onHover hook
+ // Need to call with native event here to not break backwards compatibility
+ helpers$1.callback(options.onHover || options.hover.onHover, [e.native, me.active], me);
+
+ if (e.type === 'mouseup' || e.type === 'click') {
+ if (options.onClick) {
+ // Use e.native here for backwards compatibility
+ options.onClick.call(me, e.native, me.active);
+ }
+ }
+
+ // Remove styling for last active (even if it may still be active)
+ if (me.lastActive.length) {
+ me.updateHoverStyle(me.lastActive, hoverOptions.mode, false);
+ }
+
+ // Built in hover styling
+ if (me.active.length && hoverOptions.mode) {
+ me.updateHoverStyle(me.active, hoverOptions.mode, true);
+ }
+
+ changed = !helpers$1.arrayEquals(me.active, me.lastActive);
+
+ // Remember Last Actives
+ me.lastActive = me.active;
+
+ return changed;
+ }
+});
+
+/**
+ * NOTE(SB) We actually don't use this container anymore but we need to keep it
+ * for backward compatibility. Though, it can still be useful for plugins that
+ * would need to work on multiple charts?!
+ */
+Chart.instances = {};
+
+var core_controller = Chart;
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart instead.
+ * @class Chart.Controller
+ * @deprecated since version 2.6
+ * @todo remove at version 3
+ * @private
+ */
+Chart.Controller = Chart;
+
+/**
+ * Provided for backward compatibility, not available anymore.
+ * @namespace Chart
+ * @deprecated since version 2.8
+ * @todo remove at version 3
+ * @private
+ */
+Chart.types = {};
+
+/**
+ * Provided for backward compatibility, not available anymore.
+ * @namespace Chart.helpers.configMerge
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers$1.configMerge = mergeConfig;
+
+/**
+ * Provided for backward compatibility, not available anymore.
+ * @namespace Chart.helpers.scaleMerge
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers$1.scaleMerge = mergeScaleConfig;
+
+var core_helpers = function() {
+
+ // -- Basic js utility methods
+
+ helpers$1.where = function(collection, filterCallback) {
+ if (helpers$1.isArray(collection) && Array.prototype.filter) {
+ return collection.filter(filterCallback);
+ }
+ var filtered = [];
+
+ helpers$1.each(collection, function(item) {
+ if (filterCallback(item)) {
+ filtered.push(item);
+ }
+ });
+
+ return filtered;
+ };
+ helpers$1.findIndex = Array.prototype.findIndex ?
+ function(array, callback, scope) {
+ return array.findIndex(callback, scope);
+ } :
+ function(array, callback, scope) {
+ scope = scope === undefined ? array : scope;
+ for (var i = 0, ilen = array.length; i < ilen; ++i) {
+ if (callback.call(scope, array[i], i, array)) {
+ return i;
+ }
+ }
+ return -1;
+ };
+ helpers$1.findNextWhere = function(arrayToSearch, filterCallback, startIndex) {
+ // Default to start of the array
+ if (helpers$1.isNullOrUndef(startIndex)) {
+ startIndex = -1;
+ }
+ for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
+ var currentItem = arrayToSearch[i];
+ if (filterCallback(currentItem)) {
+ return currentItem;
+ }
+ }
+ };
+ helpers$1.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) {
+ // Default to end of the array
+ if (helpers$1.isNullOrUndef(startIndex)) {
+ startIndex = arrayToSearch.length;
+ }
+ for (var i = startIndex - 1; i >= 0; i--) {
+ var currentItem = arrayToSearch[i];
+ if (filterCallback(currentItem)) {
+ return currentItem;
+ }
+ }
+ };
+
+ // -- Math methods
+ helpers$1.isNumber = function(n) {
+ return !isNaN(parseFloat(n)) && isFinite(n);
+ };
+ helpers$1.almostEquals = function(x, y, epsilon) {
+ return Math.abs(x - y) < epsilon;
+ };
+ helpers$1.almostWhole = function(x, epsilon) {
+ var rounded = Math.round(x);
+ return (((rounded - epsilon) < x) && ((rounded + epsilon) > x));
+ };
+ helpers$1.max = function(array) {
+ return array.reduce(function(max, value) {
+ if (!isNaN(value)) {
+ return Math.max(max, value);
+ }
+ return max;
+ }, Number.NEGATIVE_INFINITY);
+ };
+ helpers$1.min = function(array) {
+ return array.reduce(function(min, value) {
+ if (!isNaN(value)) {
+ return Math.min(min, value);
+ }
+ return min;
+ }, Number.POSITIVE_INFINITY);
+ };
+ helpers$1.sign = Math.sign ?
+ function(x) {
+ return Math.sign(x);
+ } :
+ function(x) {
+ x = +x; // convert to a number
+ if (x === 0 || isNaN(x)) {
+ return x;
+ }
+ return x > 0 ? 1 : -1;
+ };
+ helpers$1.log10 = Math.log10 ?
+ function(x) {
+ return Math.log10(x);
+ } :
+ function(x) {
+ var exponent = Math.log(x) * Math.LOG10E; // Math.LOG10E = 1 / Math.LN10.
+ // Check for whole powers of 10,
+ // which due to floating point rounding error should be corrected.
+ var powerOf10 = Math.round(exponent);
+ var isPowerOf10 = x === Math.pow(10, powerOf10);
+
+ return isPowerOf10 ? powerOf10 : exponent;
+ };
+ helpers$1.toRadians = function(degrees) {
+ return degrees * (Math.PI / 180);
+ };
+ helpers$1.toDegrees = function(radians) {
+ return radians * (180 / Math.PI);
+ };
+
+ /**
+ * Returns the number of decimal places
+ * i.e. the number of digits after the decimal point, of the value of this Number.
+ * @param {number} x - A number.
+ * @returns {number} The number of decimal places.
+ * @private
+ */
+ helpers$1._decimalPlaces = function(x) {
+ if (!helpers$1.isFinite(x)) {
+ return;
+ }
+ var e = 1;
+ var p = 0;
+ while (Math.round(x * e) / e !== x) {
+ e *= 10;
+ p++;
+ }
+ return p;
+ };
+
+ // Gets the angle from vertical upright to the point about a centre.
+ helpers$1.getAngleFromPoint = function(centrePoint, anglePoint) {
+ var distanceFromXCenter = anglePoint.x - centrePoint.x;
+ var distanceFromYCenter = anglePoint.y - centrePoint.y;
+ var radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
+
+ var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);
+
+ if (angle < (-0.5 * Math.PI)) {
+ angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2]
+ }
+
+ return {
+ angle: angle,
+ distance: radialDistanceFromCenter
+ };
+ };
+ helpers$1.distanceBetweenPoints = function(pt1, pt2) {
+ return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2));
+ };
+
+ /**
+ * Provided for backward compatibility, not available anymore
+ * @function Chart.helpers.aliasPixel
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ */
+ helpers$1.aliasPixel = function(pixelWidth) {
+ return (pixelWidth % 2 === 0) ? 0 : 0.5;
+ };
+
+ /**
+ * Returns the aligned pixel value to avoid anti-aliasing blur
+ * @param {Chart} chart - The chart instance.
+ * @param {number} pixel - A pixel value.
+ * @param {number} width - The width of the element.
+ * @returns {number} The aligned pixel value.
+ * @private
+ */
+ helpers$1._alignPixel = function(chart, pixel, width) {
+ var devicePixelRatio = chart.currentDevicePixelRatio;
+ var halfWidth = width / 2;
+ return Math.round((pixel - halfWidth) * devicePixelRatio) / devicePixelRatio + halfWidth;
+ };
+
+ helpers$1.splineCurve = function(firstPoint, middlePoint, afterPoint, t) {
+ // Props to Rob Spencer at scaled innovation for his post on splining between points
+ // http://scaledinnovation.com/analytics/splines/aboutSplines.html
+
+ // This function must also respect "skipped" points
+
+ var previous = firstPoint.skip ? middlePoint : firstPoint;
+ var current = middlePoint;
+ var next = afterPoint.skip ? middlePoint : afterPoint;
+
+ var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2));
+ var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2));
+
+ var s01 = d01 / (d01 + d12);
+ var s12 = d12 / (d01 + d12);
+
+ // If all points are the same, s01 & s02 will be inf
+ s01 = isNaN(s01) ? 0 : s01;
+ s12 = isNaN(s12) ? 0 : s12;
+
+ var fa = t * s01; // scaling factor for triangle Ta
+ var fb = t * s12;
+
+ return {
+ previous: {
+ x: current.x - fa * (next.x - previous.x),
+ y: current.y - fa * (next.y - previous.y)
+ },
+ next: {
+ x: current.x + fb * (next.x - previous.x),
+ y: current.y + fb * (next.y - previous.y)
+ }
+ };
+ };
+ helpers$1.EPSILON = Number.EPSILON || 1e-14;
+ helpers$1.splineCurveMonotone = function(points) {
+ // This function calculates Bézier control points in a similar way than |splineCurve|,
+ // but preserves monotonicity of the provided data and ensures no local extremums are added
+ // between the dataset discrete points due to the interpolation.
+ // See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation
+
+ var pointsWithTangents = (points || []).map(function(point) {
+ return {
+ model: point._model,
+ deltaK: 0,
+ mK: 0
+ };
+ });
+
+ // Calculate slopes (deltaK) and initialize tangents (mK)
+ var pointsLen = pointsWithTangents.length;
+ var i, pointBefore, pointCurrent, pointAfter;
+ for (i = 0; i < pointsLen; ++i) {
+ pointCurrent = pointsWithTangents[i];
+ if (pointCurrent.model.skip) {
+ continue;
+ }
+
+ pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
+ pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
+ if (pointAfter && !pointAfter.model.skip) {
+ var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x);
+
+ // In the case of two points that appear at the same x pixel, slopeDeltaX is 0
+ pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0;
+ }
+
+ if (!pointBefore || pointBefore.model.skip) {
+ pointCurrent.mK = pointCurrent.deltaK;
+ } else if (!pointAfter || pointAfter.model.skip) {
+ pointCurrent.mK = pointBefore.deltaK;
+ } else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) {
+ pointCurrent.mK = 0;
+ } else {
+ pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2;
+ }
+ }
+
+ // Adjust tangents to ensure monotonic properties
+ var alphaK, betaK, tauK, squaredMagnitude;
+ for (i = 0; i < pointsLen - 1; ++i) {
+ pointCurrent = pointsWithTangents[i];
+ pointAfter = pointsWithTangents[i + 1];
+ if (pointCurrent.model.skip || pointAfter.model.skip) {
+ continue;
+ }
+
+ if (helpers$1.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) {
+ pointCurrent.mK = pointAfter.mK = 0;
+ continue;
+ }
+
+ alphaK = pointCurrent.mK / pointCurrent.deltaK;
+ betaK = pointAfter.mK / pointCurrent.deltaK;
+ squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2);
+ if (squaredMagnitude <= 9) {
+ continue;
+ }
+
+ tauK = 3 / Math.sqrt(squaredMagnitude);
+ pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK;
+ pointAfter.mK = betaK * tauK * pointCurrent.deltaK;
+ }
+
+ // Compute control points
+ var deltaX;
+ for (i = 0; i < pointsLen; ++i) {
+ pointCurrent = pointsWithTangents[i];
+ if (pointCurrent.model.skip) {
+ continue;
+ }
+
+ pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
+ pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
+ if (pointBefore && !pointBefore.model.skip) {
+ deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3;
+ pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX;
+ pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK;
+ }
+ if (pointAfter && !pointAfter.model.skip) {
+ deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3;
+ pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX;
+ pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK;
+ }
+ }
+ };
+ helpers$1.nextItem = function(collection, index, loop) {
+ if (loop) {
+ return index >= collection.length - 1 ? collection[0] : collection[index + 1];
+ }
+ return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1];
+ };
+ helpers$1.previousItem = function(collection, index, loop) {
+ if (loop) {
+ return index <= 0 ? collection[collection.length - 1] : collection[index - 1];
+ }
+ return index <= 0 ? collection[0] : collection[index - 1];
+ };
+ // Implementation of the nice number algorithm used in determining where axis labels will go
+ helpers$1.niceNum = function(range, round) {
+ var exponent = Math.floor(helpers$1.log10(range));
+ var fraction = range / Math.pow(10, exponent);
+ var niceFraction;
+
+ if (round) {
+ if (fraction < 1.5) {
+ niceFraction = 1;
+ } else if (fraction < 3) {
+ niceFraction = 2;
+ } else if (fraction < 7) {
+ niceFraction = 5;
+ } else {
+ niceFraction = 10;
+ }
+ } else if (fraction <= 1.0) {
+ niceFraction = 1;
+ } else if (fraction <= 2) {
+ niceFraction = 2;
+ } else if (fraction <= 5) {
+ niceFraction = 5;
+ } else {
+ niceFraction = 10;
+ }
+
+ return niceFraction * Math.pow(10, exponent);
+ };
+ // Request animation polyfill - https://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
+ helpers$1.requestAnimFrame = (function() {
+ if (typeof window === 'undefined') {
+ return function(callback) {
+ callback();
+ };
+ }
+ return window.requestAnimationFrame ||
+ window.webkitRequestAnimationFrame ||
+ window.mozRequestAnimationFrame ||
+ window.oRequestAnimationFrame ||
+ window.msRequestAnimationFrame ||
+ function(callback) {
+ return window.setTimeout(callback, 1000 / 60);
+ };
+ }());
+ // -- DOM methods
+ helpers$1.getRelativePosition = function(evt, chart) {
+ var mouseX, mouseY;
+ var e = evt.originalEvent || evt;
+ var canvas = evt.target || evt.srcElement;
+ var boundingRect = canvas.getBoundingClientRect();
+
+ var touches = e.touches;
+ if (touches && touches.length > 0) {
+ mouseX = touches[0].clientX;
+ mouseY = touches[0].clientY;
+
+ } else {
+ mouseX = e.clientX;
+ mouseY = e.clientY;
+ }
+
+ // Scale mouse coordinates into canvas coordinates
+ // by following the pattern laid out by 'jerryj' in the comments of
+ // https://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/
+ var paddingLeft = parseFloat(helpers$1.getStyle(canvas, 'padding-left'));
+ var paddingTop = parseFloat(helpers$1.getStyle(canvas, 'padding-top'));
+ var paddingRight = parseFloat(helpers$1.getStyle(canvas, 'padding-right'));
+ var paddingBottom = parseFloat(helpers$1.getStyle(canvas, 'padding-bottom'));
+ var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight;
+ var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom;
+
+ // We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However
+ // the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here
+ mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio);
+ mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio);
+
+ return {
+ x: mouseX,
+ y: mouseY
+ };
+
+ };
+
+ // Private helper function to convert max-width/max-height values that may be percentages into a number
+ function parseMaxStyle(styleValue, node, parentProperty) {
+ var valueInPixels;
+ if (typeof styleValue === 'string') {
+ valueInPixels = parseInt(styleValue, 10);
+
+ if (styleValue.indexOf('%') !== -1) {
+ // percentage * size in dimension
+ valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
+ }
+ } else {
+ valueInPixels = styleValue;
+ }
+
+ return valueInPixels;
+ }
+
+ /**
+ * Returns if the given value contains an effective constraint.
+ * @private
+ */
+ function isConstrainedValue(value) {
+ return value !== undefined && value !== null && value !== 'none';
+ }
+
+ /**
+ * Returns the max width or height of the given DOM node in a cross-browser compatible fashion
+ * @param {HTMLElement} domNode - the node to check the constraint on
+ * @param {string} maxStyle - the style that defines the maximum for the direction we are using ('max-width' / 'max-height')
+ * @param {string} percentageProperty - property of parent to use when calculating width as a percentage
+ * @see {@link https://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser}
+ */
+ function getConstraintDimension(domNode, maxStyle, percentageProperty) {
+ var view = document.defaultView;
+ var parentNode = helpers$1._getParentNode(domNode);
+ var constrainedNode = view.getComputedStyle(domNode)[maxStyle];
+ var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle];
+ var hasCNode = isConstrainedValue(constrainedNode);
+ var hasCContainer = isConstrainedValue(constrainedContainer);
+ var infinity = Number.POSITIVE_INFINITY;
+
+ if (hasCNode || hasCContainer) {
+ return Math.min(
+ hasCNode ? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity,
+ hasCContainer ? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity);
+ }
+
+ return 'none';
+ }
+ // returns Number or undefined if no constraint
+ helpers$1.getConstraintWidth = function(domNode) {
+ return getConstraintDimension(domNode, 'max-width', 'clientWidth');
+ };
+ // returns Number or undefined if no constraint
+ helpers$1.getConstraintHeight = function(domNode) {
+ return getConstraintDimension(domNode, 'max-height', 'clientHeight');
+ };
+ /**
+ * @private
+ */
+ helpers$1._calculatePadding = function(container, padding, parentDimension) {
+ padding = helpers$1.getStyle(container, padding);
+
+ return padding.indexOf('%') > -1 ? parentDimension * parseInt(padding, 10) / 100 : parseInt(padding, 10);
+ };
+ /**
+ * @private
+ */
+ helpers$1._getParentNode = function(domNode) {
+ var parent = domNode.parentNode;
+ if (parent && parent.toString() === '[object ShadowRoot]') {
+ parent = parent.host;
+ }
+ return parent;
+ };
+ helpers$1.getMaximumWidth = function(domNode) {
+ var container = helpers$1._getParentNode(domNode);
+ if (!container) {
+ return domNode.clientWidth;
+ }
+
+ var clientWidth = container.clientWidth;
+ var paddingLeft = helpers$1._calculatePadding(container, 'padding-left', clientWidth);
+ var paddingRight = helpers$1._calculatePadding(container, 'padding-right', clientWidth);
+
+ var w = clientWidth - paddingLeft - paddingRight;
+ var cw = helpers$1.getConstraintWidth(domNode);
+ return isNaN(cw) ? w : Math.min(w, cw);
+ };
+ helpers$1.getMaximumHeight = function(domNode) {
+ var container = helpers$1._getParentNode(domNode);
+ if (!container) {
+ return domNode.clientHeight;
+ }
+
+ var clientHeight = container.clientHeight;
+ var paddingTop = helpers$1._calculatePadding(container, 'padding-top', clientHeight);
+ var paddingBottom = helpers$1._calculatePadding(container, 'padding-bottom', clientHeight);
+
+ var h = clientHeight - paddingTop - paddingBottom;
+ var ch = helpers$1.getConstraintHeight(domNode);
+ return isNaN(ch) ? h : Math.min(h, ch);
+ };
+ helpers$1.getStyle = function(el, property) {
+ return el.currentStyle ?
+ el.currentStyle[property] :
+ document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
+ };
+ helpers$1.retinaScale = function(chart, forceRatio) {
+ var pixelRatio = chart.currentDevicePixelRatio = forceRatio || (typeof window !== 'undefined' && window.devicePixelRatio) || 1;
+ if (pixelRatio === 1) {
+ return;
+ }
+
+ var canvas = chart.canvas;
+ var height = chart.height;
+ var width = chart.width;
+
+ canvas.height = height * pixelRatio;
+ canvas.width = width * pixelRatio;
+ chart.ctx.scale(pixelRatio, pixelRatio);
+
+ // If no style has been set on the canvas, the render size is used as display size,
+ // making the chart visually bigger, so let's enforce it to the "correct" values.
+ // See https://github.com/chartjs/Chart.js/issues/3575
+ if (!canvas.style.height && !canvas.style.width) {
+ canvas.style.height = height + 'px';
+ canvas.style.width = width + 'px';
+ }
+ };
+ // -- Canvas methods
+ helpers$1.fontString = function(pixelSize, fontStyle, fontFamily) {
+ return fontStyle + ' ' + pixelSize + 'px ' + fontFamily;
+ };
+ helpers$1.longestText = function(ctx, font, arrayOfThings, cache) {
+ cache = cache || {};
+ var data = cache.data = cache.data || {};
+ var gc = cache.garbageCollect = cache.garbageCollect || [];
+
+ if (cache.font !== font) {
+ data = cache.data = {};
+ gc = cache.garbageCollect = [];
+ cache.font = font;
+ }
+
+ ctx.font = font;
+ var longest = 0;
+ helpers$1.each(arrayOfThings, function(thing) {
+ // Undefined strings and arrays should not be measured
+ if (thing !== undefined && thing !== null && helpers$1.isArray(thing) !== true) {
+ longest = helpers$1.measureText(ctx, data, gc, longest, thing);
+ } else if (helpers$1.isArray(thing)) {
+ // if it is an array lets measure each element
+ // to do maybe simplify this function a bit so we can do this more recursively?
+ helpers$1.each(thing, function(nestedThing) {
+ // Undefined strings and arrays should not be measured
+ if (nestedThing !== undefined && nestedThing !== null && !helpers$1.isArray(nestedThing)) {
+ longest = helpers$1.measureText(ctx, data, gc, longest, nestedThing);
+ }
+ });
+ }
+ });
+
+ var gcLen = gc.length / 2;
+ if (gcLen > arrayOfThings.length) {
+ for (var i = 0; i < gcLen; i++) {
+ delete data[gc[i]];
+ }
+ gc.splice(0, gcLen);
+ }
+ return longest;
+ };
+ helpers$1.measureText = function(ctx, data, gc, longest, string) {
+ var textWidth = data[string];
+ if (!textWidth) {
+ textWidth = data[string] = ctx.measureText(string).width;
+ gc.push(string);
+ }
+ if (textWidth > longest) {
+ longest = textWidth;
+ }
+ return longest;
+ };
+ helpers$1.numberOfLabelLines = function(arrayOfThings) {
+ var numberOfLines = 1;
+ helpers$1.each(arrayOfThings, function(thing) {
+ if (helpers$1.isArray(thing)) {
+ if (thing.length > numberOfLines) {
+ numberOfLines = thing.length;
+ }
+ }
+ });
+ return numberOfLines;
+ };
+
+ helpers$1.color = !chartjsColor ?
+ function(value) {
+ console.error('Color.js not found!');
+ return value;
+ } :
+ function(value) {
+ /* global CanvasGradient */
+ if (value instanceof CanvasGradient) {
+ value = core_defaults.global.defaultColor;
+ }
+
+ return chartjsColor(value);
+ };
+
+ helpers$1.getHoverColor = function(colorValue) {
+ /* global CanvasPattern */
+ return (colorValue instanceof CanvasPattern || colorValue instanceof CanvasGradient) ?
+ colorValue :
+ helpers$1.color(colorValue).saturate(0.5).darken(0.1).rgbString();
+ };
+};
+
+function abstract() {
+ throw new Error(
+ 'This method is not implemented: either no adapter can ' +
+ 'be found or an incomplete integration was provided.'
+ );
+}
+
+/**
+ * Date adapter (current used by the time scale)
+ * @namespace Chart._adapters._date
+ * @memberof Chart._adapters
+ * @private
+ */
+
+/**
+ * Currently supported unit string values.
+ * @typedef {('millisecond'|'second'|'minute'|'hour'|'day'|'week'|'month'|'quarter'|'year')}
+ * @memberof Chart._adapters._date
+ * @name Unit
+ */
+
+/**
+ * @class
+ */
+function DateAdapter(options) {
+ this.options = options || {};
+}
+
+helpers$1.extend(DateAdapter.prototype, /** @lends DateAdapter */ {
+ /**
+ * Returns a map of time formats for the supported formatting units defined
+ * in Unit as well as 'datetime' representing a detailed date/time string.
+ * @returns {{string: string}}
+ */
+ formats: abstract,
+
+ /**
+ * Parses the given `value` and return the associated timestamp.
+ * @param {any} value - the value to parse (usually comes from the data)
+ * @param {string} [format] - the expected data format
+ * @returns {(number|null)}
+ * @function
+ */
+ parse: abstract,
+
+ /**
+ * Returns the formatted date in the specified `format` for a given `timestamp`.
+ * @param {number} timestamp - the timestamp to format
+ * @param {string} format - the date/time token
+ * @return {string}
+ * @function
+ */
+ format: abstract,
+
+ /**
+ * Adds the specified `amount` of `unit` to the given `timestamp`.
+ * @param {number} timestamp - the input timestamp
+ * @param {number} amount - the amount to add
+ * @param {Unit} unit - the unit as string
+ * @return {number}
+ * @function
+ */
+ add: abstract,
+
+ /**
+ * Returns the number of `unit` between the given timestamps.
+ * @param {number} max - the input timestamp (reference)
+ * @param {number} min - the timestamp to substract
+ * @param {Unit} unit - the unit as string
+ * @return {number}
+ * @function
+ */
+ diff: abstract,
+
+ /**
+ * Returns start of `unit` for the given `timestamp`.
+ * @param {number} timestamp - the input timestamp
+ * @param {Unit} unit - the unit as string
+ * @param {number} [weekday] - the ISO day of the week with 1 being Monday
+ * and 7 being Sunday (only needed if param *unit* is `isoWeek`).
+ * @function
+ */
+ startOf: abstract,
+
+ /**
+ * Returns end of `unit` for the given `timestamp`.
+ * @param {number} timestamp - the input timestamp
+ * @param {Unit} unit - the unit as string
+ * @function
+ */
+ endOf: abstract,
+
+ // DEPRECATIONS
+
+ /**
+ * Provided for backward compatibility for scale.getValueForPixel(),
+ * this method should be overridden only by the moment adapter.
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+ _create: function(value) {
+ return value;
+ }
+});
+
+DateAdapter.override = function(members) {
+ helpers$1.extend(DateAdapter.prototype, members);
+};
+
+var _date = DateAdapter;
+
+var core_adapters = {
+ _date: _date
+};
+
+/**
+ * Namespace to hold static tick generation functions
+ * @namespace Chart.Ticks
+ */
+var core_ticks = {
+ /**
+ * Namespace to hold formatters for different types of ticks
+ * @namespace Chart.Ticks.formatters
+ */
+ formatters: {
+ /**
+ * Formatter for value labels
+ * @method Chart.Ticks.formatters.values
+ * @param value the value to display
+ * @return {string|string[]} the label to display
+ */
+ values: function(value) {
+ return helpers$1.isArray(value) ? value : '' + value;
+ },
+
+ /**
+ * Formatter for linear numeric ticks
+ * @method Chart.Ticks.formatters.linear
+ * @param tickValue {number} the value to be formatted
+ * @param index {number} the position of the tickValue parameter in the ticks array
+ * @param ticks {number[]} the list of ticks being converted
+ * @return {string} string representation of the tickValue parameter
+ */
+ linear: function(tickValue, index, ticks) {
+ // If we have lots of ticks, don't use the ones
+ var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0];
+
+ // If we have a number like 2.5 as the delta, figure out how many decimal places we need
+ if (Math.abs(delta) > 1) {
+ if (tickValue !== Math.floor(tickValue)) {
+ // not an integer
+ delta = tickValue - Math.floor(tickValue);
+ }
+ }
+
+ var logDelta = helpers$1.log10(Math.abs(delta));
+ var tickString = '';
+
+ if (tickValue !== 0) {
+ var maxTick = Math.max(Math.abs(ticks[0]), Math.abs(ticks[ticks.length - 1]));
+ if (maxTick < 1e-4) { // all ticks are small numbers; use scientific notation
+ var logTick = helpers$1.log10(Math.abs(tickValue));
+ tickString = tickValue.toExponential(Math.floor(logTick) - Math.floor(logDelta));
+ } else {
+ var numDecimal = -1 * Math.floor(logDelta);
+ numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places
+ tickString = tickValue.toFixed(numDecimal);
+ }
+ } else {
+ tickString = '0'; // never show decimal places for 0
+ }
+
+ return tickString;
+ },
+
+ logarithmic: function(tickValue, index, ticks) {
+ var remain = tickValue / (Math.pow(10, Math.floor(helpers$1.log10(tickValue))));
+
+ if (tickValue === 0) {
+ return '0';
+ } else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) {
+ return tickValue.toExponential();
+ }
+ return '';
+ }
+ }
+};
+
+var valueOrDefault$9 = helpers$1.valueOrDefault;
+var valueAtIndexOrDefault = helpers$1.valueAtIndexOrDefault;
+
+core_defaults._set('scale', {
+ display: true,
+ position: 'left',
+ offset: false,
+
+ // grid line settings
+ gridLines: {
+ display: true,
+ color: 'rgba(0, 0, 0, 0.1)',
+ lineWidth: 1,
+ drawBorder: true,
+ drawOnChartArea: true,
+ drawTicks: true,
+ tickMarkLength: 10,
+ zeroLineWidth: 1,
+ zeroLineColor: 'rgba(0,0,0,0.25)',
+ zeroLineBorderDash: [],
+ zeroLineBorderDashOffset: 0.0,
+ offsetGridLines: false,
+ borderDash: [],
+ borderDashOffset: 0.0
+ },
+
+ // scale label
+ scaleLabel: {
+ // display property
+ display: false,
+
+ // actual label
+ labelString: '',
+
+ // top/bottom padding
+ padding: {
+ top: 4,
+ bottom: 4
+ }
+ },
+
+ // label settings
+ ticks: {
+ beginAtZero: false,
+ minRotation: 0,
+ maxRotation: 50,
+ mirror: false,
+ padding: 0,
+ reverse: false,
+ display: true,
+ autoSkip: true,
+ autoSkipPadding: 0,
+ labelOffset: 0,
+ // We pass through arrays to be rendered as multiline labels, we convert Others to strings here.
+ callback: core_ticks.formatters.values,
+ minor: {},
+ major: {}
+ }
+});
+
+function labelsFromTicks(ticks) {
+ var labels = [];
+ var i, ilen;
+
+ for (i = 0, ilen = ticks.length; i < ilen; ++i) {
+ labels.push(ticks[i].label);
+ }
+
+ return labels;
+}
+
+function getPixelForGridLine(scale, index, offsetGridLines) {
+ var lineValue = scale.getPixelForTick(index);
+
+ if (offsetGridLines) {
+ if (scale.getTicks().length === 1) {
+ lineValue -= scale.isHorizontal() ?
+ Math.max(lineValue - scale.left, scale.right - lineValue) :
+ Math.max(lineValue - scale.top, scale.bottom - lineValue);
+ } else if (index === 0) {
+ lineValue -= (scale.getPixelForTick(1) - lineValue) / 2;
+ } else {
+ lineValue -= (lineValue - scale.getPixelForTick(index - 1)) / 2;
+ }
+ }
+ return lineValue;
+}
+
+function computeTextSize(context, tick, font) {
+ return helpers$1.isArray(tick) ?
+ helpers$1.longestText(context, font, tick) :
+ context.measureText(tick).width;
+}
+
+var core_scale = core_element.extend({
+ /**
+ * Get the padding needed for the scale
+ * @method getPadding
+ * @private
+ * @returns {Padding} the necessary padding
+ */
+ getPadding: function() {
+ var me = this;
+ return {
+ left: me.paddingLeft || 0,
+ top: me.paddingTop || 0,
+ right: me.paddingRight || 0,
+ bottom: me.paddingBottom || 0
+ };
+ },
+
+ /**
+ * Returns the scale tick objects ({label, major})
+ * @since 2.7
+ */
+ getTicks: function() {
+ return this._ticks;
+ },
+
+ // These methods are ordered by lifecyle. Utilities then follow.
+ // Any function defined here is inherited by all scale types.
+ // Any function can be extended by the scale type
+
+ mergeTicksOptions: function() {
+ var ticks = this.options.ticks;
+ if (ticks.minor === false) {
+ ticks.minor = {
+ display: false
+ };
+ }
+ if (ticks.major === false) {
+ ticks.major = {
+ display: false
+ };
+ }
+ for (var key in ticks) {
+ if (key !== 'major' && key !== 'minor') {
+ if (typeof ticks.minor[key] === 'undefined') {
+ ticks.minor[key] = ticks[key];
+ }
+ if (typeof ticks.major[key] === 'undefined') {
+ ticks.major[key] = ticks[key];
+ }
+ }
+ }
+ },
+ beforeUpdate: function() {
+ helpers$1.callback(this.options.beforeUpdate, [this]);
+ },
+
+ update: function(maxWidth, maxHeight, margins) {
+ var me = this;
+ var i, ilen, labels, label, ticks, tick;
+
+ // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
+ me.beforeUpdate();
+
+ // Absorb the master measurements
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = helpers$1.extend({
+ left: 0,
+ right: 0,
+ top: 0,
+ bottom: 0
+ }, margins);
+
+ me._maxLabelLines = 0;
+ me.longestLabelWidth = 0;
+ me.longestTextCache = me.longestTextCache || {};
+
+ // Dimensions
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
+
+ // Data min/max
+ me.beforeDataLimits();
+ me.determineDataLimits();
+ me.afterDataLimits();
+
+ // Ticks - `this.ticks` is now DEPRECATED!
+ // Internal ticks are now stored as objects in the PRIVATE `this._ticks` member
+ // and must not be accessed directly from outside this class. `this.ticks` being
+ // around for long time and not marked as private, we can't change its structure
+ // without unexpected breaking changes. If you need to access the scale ticks,
+ // use scale.getTicks() instead.
+
+ me.beforeBuildTicks();
+
+ // New implementations should return an array of objects but for BACKWARD COMPAT,
+ // we still support no return (`this.ticks` internally set by calling this method).
+ ticks = me.buildTicks() || [];
+
+ // Allow modification of ticks in callback.
+ ticks = me.afterBuildTicks(ticks) || ticks;
+
+ me.beforeTickToLabelConversion();
+
+ // New implementations should return the formatted tick labels but for BACKWARD
+ // COMPAT, we still support no return (`this.ticks` internally changed by calling
+ // this method and supposed to contain only string values).
+ labels = me.convertTicksToLabels(ticks) || me.ticks;
+
+ me.afterTickToLabelConversion();
+
+ me.ticks = labels; // BACKWARD COMPATIBILITY
+
+ // IMPORTANT: from this point, we consider that `this.ticks` will NEVER change!
+
+ // BACKWARD COMPAT: synchronize `_ticks` with labels (so potentially `this.ticks`)
+ for (i = 0, ilen = labels.length; i < ilen; ++i) {
+ label = labels[i];
+ tick = ticks[i];
+ if (!tick) {
+ ticks.push(tick = {
+ label: label,
+ major: false
+ });
+ } else {
+ tick.label = label;
+ }
+ }
+
+ me._ticks = ticks;
+
+ // Tick Rotation
+ me.beforeCalculateTickRotation();
+ me.calculateTickRotation();
+ me.afterCalculateTickRotation();
+ // Fit
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
+ //
+ me.afterUpdate();
+
+ return me.minSize;
+
+ },
+ afterUpdate: function() {
+ helpers$1.callback(this.options.afterUpdate, [this]);
+ },
+
+ //
+
+ beforeSetDimensions: function() {
+ helpers$1.callback(this.options.beforeSetDimensions, [this]);
+ },
+ setDimensions: function() {
+ var me = this;
+ // Set the unconstrained dimension before label rotation
+ if (me.isHorizontal()) {
+ // Reset position before calculating rotation
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
+ } else {
+ me.height = me.maxHeight;
+
+ // Reset position before calculating rotation
+ me.top = 0;
+ me.bottom = me.height;
+ }
+
+ // Reset padding
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
+ },
+ afterSetDimensions: function() {
+ helpers$1.callback(this.options.afterSetDimensions, [this]);
+ },
+
+ // Data limits
+ beforeDataLimits: function() {
+ helpers$1.callback(this.options.beforeDataLimits, [this]);
+ },
+ determineDataLimits: helpers$1.noop,
+ afterDataLimits: function() {
+ helpers$1.callback(this.options.afterDataLimits, [this]);
+ },
+
+ //
+ beforeBuildTicks: function() {
+ helpers$1.callback(this.options.beforeBuildTicks, [this]);
+ },
+ buildTicks: helpers$1.noop,
+ afterBuildTicks: function(ticks) {
+ var me = this;
+ // ticks is empty for old axis implementations here
+ if (helpers$1.isArray(ticks) && ticks.length) {
+ return helpers$1.callback(me.options.afterBuildTicks, [me, ticks]);
+ }
+ // Support old implementations (that modified `this.ticks` directly in buildTicks)
+ me.ticks = helpers$1.callback(me.options.afterBuildTicks, [me, me.ticks]) || me.ticks;
+ return ticks;
+ },
+
+ beforeTickToLabelConversion: function() {
+ helpers$1.callback(this.options.beforeTickToLabelConversion, [this]);
+ },
+ convertTicksToLabels: function() {
+ var me = this;
+ // Convert ticks to strings
+ var tickOpts = me.options.ticks;
+ me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback, this);
+ },
+ afterTickToLabelConversion: function() {
+ helpers$1.callback(this.options.afterTickToLabelConversion, [this]);
+ },
+
+ //
+
+ beforeCalculateTickRotation: function() {
+ helpers$1.callback(this.options.beforeCalculateTickRotation, [this]);
+ },
+ calculateTickRotation: function() {
+ var me = this;
+ var context = me.ctx;
+ var tickOpts = me.options.ticks;
+ var labels = labelsFromTicks(me._ticks);
+
+ // Get the width of each grid by calculating the difference
+ // between x offsets between 0 and 1.
+ var tickFont = helpers$1.options._parseFont(tickOpts);
+ context.font = tickFont.string;
+
+ var labelRotation = tickOpts.minRotation || 0;
+
+ if (labels.length && me.options.display && me.isHorizontal()) {
+ var originalLabelWidth = helpers$1.longestText(context, tickFont.string, labels, me.longestTextCache);
+ var labelWidth = originalLabelWidth;
+ var cosRotation, sinRotation;
+
+ // Allow 3 pixels x2 padding either side for label readability
+ var tickWidth = me.getPixelForTick(1) - me.getPixelForTick(0) - 6;
+
+ // Max label rotation can be set or default to 90 - also act as a loop counter
+ while (labelWidth > tickWidth && labelRotation < tickOpts.maxRotation) {
+ var angleRadians = helpers$1.toRadians(labelRotation);
+ cosRotation = Math.cos(angleRadians);
+ sinRotation = Math.sin(angleRadians);
+
+ if (sinRotation * originalLabelWidth > me.maxHeight) {
+ // go back one step
+ labelRotation--;
+ break;
+ }
+
+ labelRotation++;
+ labelWidth = cosRotation * originalLabelWidth;
+ }
+ }
+
+ me.labelRotation = labelRotation;
+ },
+ afterCalculateTickRotation: function() {
+ helpers$1.callback(this.options.afterCalculateTickRotation, [this]);
+ },
+
+ //
+
+ beforeFit: function() {
+ helpers$1.callback(this.options.beforeFit, [this]);
+ },
+ fit: function() {
+ var me = this;
+ // Reset
+ var minSize = me.minSize = {
+ width: 0,
+ height: 0
+ };
+
+ var labels = labelsFromTicks(me._ticks);
+
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+ var scaleLabelOpts = opts.scaleLabel;
+ var gridLineOpts = opts.gridLines;
+ var display = me._isVisible();
+ var position = opts.position;
+ var isHorizontal = me.isHorizontal();
+
+ var parseFont = helpers$1.options._parseFont;
+ var tickFont = parseFont(tickOpts);
+ var tickMarkLength = opts.gridLines.tickMarkLength;
+
+ // Width
+ if (isHorizontal) {
+ // subtract the margins to line up with the chartArea if we are a full width scale
+ minSize.width = me.isFullWidth() ? me.maxWidth - me.margins.left - me.margins.right : me.maxWidth;
+ } else {
+ minSize.width = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
+ }
+
+ // height
+ if (isHorizontal) {
+ minSize.height = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
+ } else {
+ minSize.height = me.maxHeight; // fill all the height
+ }
+
+ // Are we showing a title for the scale?
+ if (scaleLabelOpts.display && display) {
+ var scaleLabelFont = parseFont(scaleLabelOpts);
+ var scaleLabelPadding = helpers$1.options.toPadding(scaleLabelOpts.padding);
+ var deltaHeight = scaleLabelFont.lineHeight + scaleLabelPadding.height;
+
+ if (isHorizontal) {
+ minSize.height += deltaHeight;
+ } else {
+ minSize.width += deltaHeight;
+ }
+ }
+
+ // Don't bother fitting the ticks if we are not showing the labels
+ if (tickOpts.display && display) {
+ var largestTextWidth = helpers$1.longestText(me.ctx, tickFont.string, labels, me.longestTextCache);
+ var tallestLabelHeightInLines = helpers$1.numberOfLabelLines(labels);
+ var lineSpace = tickFont.size * 0.5;
+ var tickPadding = me.options.ticks.padding;
+
+ // Store max number of lines and widest label for _autoSkip
+ me._maxLabelLines = tallestLabelHeightInLines;
+ me.longestLabelWidth = largestTextWidth;
+
+ if (isHorizontal) {
+ var angleRadians = helpers$1.toRadians(me.labelRotation);
+ var cosRotation = Math.cos(angleRadians);
+ var sinRotation = Math.sin(angleRadians);
+
+ // TODO - improve this calculation
+ var labelHeight = (sinRotation * largestTextWidth)
+ + (tickFont.lineHeight * tallestLabelHeightInLines)
+ + lineSpace; // padding
+
+ minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding);
+
+ me.ctx.font = tickFont.string;
+ var firstLabelWidth = computeTextSize(me.ctx, labels[0], tickFont.string);
+ var lastLabelWidth = computeTextSize(me.ctx, labels[labels.length - 1], tickFont.string);
+ var offsetLeft = me.getPixelForTick(0) - me.left;
+ var offsetRight = me.right - me.getPixelForTick(labels.length - 1);
+ var paddingLeft, paddingRight;
+
+ // Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned
+ // which means that the right padding is dominated by the font height
+ if (me.labelRotation !== 0) {
+ paddingLeft = position === 'bottom' ? (cosRotation * firstLabelWidth) : (cosRotation * lineSpace);
+ paddingRight = position === 'bottom' ? (cosRotation * lineSpace) : (cosRotation * lastLabelWidth);
+ } else {
+ paddingLeft = firstLabelWidth / 2;
+ paddingRight = lastLabelWidth / 2;
+ }
+ me.paddingLeft = Math.max(paddingLeft - offsetLeft, 0) + 3; // add 3 px to move away from canvas edges
+ me.paddingRight = Math.max(paddingRight - offsetRight, 0) + 3;
+ } else {
+ // A vertical axis is more constrained by the width. Labels are the
+ // dominant factor here, so get that length first and account for padding
+ if (tickOpts.mirror) {
+ largestTextWidth = 0;
+ } else {
+ // use lineSpace for consistency with horizontal axis
+ // tickPadding is not implemented for horizontal
+ largestTextWidth += tickPadding + lineSpace;
+ }
+
+ minSize.width = Math.min(me.maxWidth, minSize.width + largestTextWidth);
+
+ me.paddingTop = tickFont.size / 2;
+ me.paddingBottom = tickFont.size / 2;
+ }
+ }
+
+ me.handleMargins();
+
+ me.width = minSize.width;
+ me.height = minSize.height;
+ },
+
+ /**
+ * Handle margins and padding interactions
+ * @private
+ */
+ handleMargins: function() {
+ var me = this;
+ if (me.margins) {
+ me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0);
+ me.paddingTop = Math.max(me.paddingTop - me.margins.top, 0);
+ me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0);
+ me.paddingBottom = Math.max(me.paddingBottom - me.margins.bottom, 0);
+ }
+ },
+
+ afterFit: function() {
+ helpers$1.callback(this.options.afterFit, [this]);
+ },
+
+ // Shared Methods
+ isHorizontal: function() {
+ return this.options.position === 'top' || this.options.position === 'bottom';
+ },
+ isFullWidth: function() {
+ return (this.options.fullWidth);
+ },
+
+ // Get the correct value. NaN bad inputs, If the value type is object get the x or y based on whether we are horizontal or not
+ getRightValue: function(rawValue) {
+ // Null and undefined values first
+ if (helpers$1.isNullOrUndef(rawValue)) {
+ return NaN;
+ }
+ // isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values
+ if ((typeof rawValue === 'number' || rawValue instanceof Number) && !isFinite(rawValue)) {
+ return NaN;
+ }
+ // If it is in fact an object, dive in one more level
+ if (rawValue) {
+ if (this.isHorizontal()) {
+ if (rawValue.x !== undefined) {
+ return this.getRightValue(rawValue.x);
+ }
+ } else if (rawValue.y !== undefined) {
+ return this.getRightValue(rawValue.y);
+ }
+ }
+
+ // Value is good, return it
+ return rawValue;
+ },
+
+ /**
+ * Used to get the value to display in the tooltip for the data at the given index
+ * @param index
+ * @param datasetIndex
+ */
+ getLabelForIndex: helpers$1.noop,
+
+ /**
+ * Returns the location of the given data point. Value can either be an index or a numerical value
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ * @param value
+ * @param index
+ * @param datasetIndex
+ */
+ getPixelForValue: helpers$1.noop,
+
+ /**
+ * Used to get the data value from a given pixel. This is the inverse of getPixelForValue
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ * @param pixel
+ */
+ getValueForPixel: helpers$1.noop,
+
+ /**
+ * Returns the location of the tick at the given index
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ */
+ getPixelForTick: function(index) {
+ var me = this;
+ var offset = me.options.offset;
+ if (me.isHorizontal()) {
+ var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
+ var tickWidth = innerWidth / Math.max((me._ticks.length - (offset ? 0 : 1)), 1);
+ var pixel = (tickWidth * index) + me.paddingLeft;
+
+ if (offset) {
+ pixel += tickWidth / 2;
+ }
+
+ var finalVal = me.left + pixel;
+ finalVal += me.isFullWidth() ? me.margins.left : 0;
+ return finalVal;
+ }
+ var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
+ return me.top + (index * (innerHeight / (me._ticks.length - 1)));
+ },
+
+ /**
+ * Utility for getting the pixel location of a percentage of scale
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ */
+ getPixelForDecimal: function(decimal) {
+ var me = this;
+ if (me.isHorizontal()) {
+ var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
+ var valueOffset = (innerWidth * decimal) + me.paddingLeft;
+
+ var finalVal = me.left + valueOffset;
+ finalVal += me.isFullWidth() ? me.margins.left : 0;
+ return finalVal;
+ }
+ return me.top + (decimal * me.height);
+ },
+
+ /**
+ * Returns the pixel for the minimum chart value
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ */
+ getBasePixel: function() {
+ return this.getPixelForValue(this.getBaseValue());
+ },
+
+ getBaseValue: function() {
+ var me = this;
+ var min = me.min;
+ var max = me.max;
+
+ return me.beginAtZero ? 0 :
+ min < 0 && max < 0 ? max :
+ min > 0 && max > 0 ? min :
+ 0;
+ },
+
+ /**
+ * Returns a subset of ticks to be plotted to avoid overlapping labels.
+ * @private
+ */
+ _autoSkip: function(ticks) {
+ var me = this;
+ var isHorizontal = me.isHorizontal();
+ var optionTicks = me.options.ticks.minor;
+ var tickCount = ticks.length;
+ var skipRatio = false;
+ var maxTicks = optionTicks.maxTicksLimit;
+
+ // Total space needed to display all ticks. First and last ticks are
+ // drawn as their center at end of axis, so tickCount-1
+ var ticksLength = me._tickSize() * (tickCount - 1);
+
+ // Axis length
+ var axisLength = isHorizontal
+ ? me.width - (me.paddingLeft + me.paddingRight)
+ : me.height - (me.paddingTop + me.PaddingBottom);
+
+ var result = [];
+ var i, tick;
+
+ if (ticksLength > axisLength) {
+ skipRatio = 1 + Math.floor(ticksLength / axisLength);
+ }
+
+ // if they defined a max number of optionTicks,
+ // increase skipRatio until that number is met
+ if (tickCount > maxTicks) {
+ skipRatio = Math.max(skipRatio, 1 + Math.floor(tickCount / maxTicks));
+ }
+
+ for (i = 0; i < tickCount; i++) {
+ tick = ticks[i];
+
+ if (skipRatio > 1 && i % skipRatio > 0) {
+ // leave tick in place but make sure it's not displayed (#4635)
+ delete tick.label;
+ }
+ result.push(tick);
+ }
+ return result;
+ },
+
+ /**
+ * @private
+ */
+ _tickSize: function() {
+ var me = this;
+ var isHorizontal = me.isHorizontal();
+ var optionTicks = me.options.ticks.minor;
+
+ // Calculate space needed by label in axis direction.
+ var rot = helpers$1.toRadians(me.labelRotation);
+ var cos = Math.abs(Math.cos(rot));
+ var sin = Math.abs(Math.sin(rot));
+
+ var padding = optionTicks.autoSkipPadding || 0;
+ var w = (me.longestLabelWidth + padding) || 0;
+
+ var tickFont = helpers$1.options._parseFont(optionTicks);
+ var h = (me._maxLabelLines * tickFont.lineHeight + padding) || 0;
+
+ // Calculate space needed for 1 tick in axis direction.
+ return isHorizontal
+ ? h * cos > w * sin ? w / cos : h / sin
+ : h * sin < w * cos ? h / cos : w / sin;
+ },
+
+ /**
+ * @private
+ */
+ _isVisible: function() {
+ var me = this;
+ var chart = me.chart;
+ var display = me.options.display;
+ var i, ilen, meta;
+
+ if (display !== 'auto') {
+ return !!display;
+ }
+
+ // When 'auto', the scale is visible if at least one associated dataset is visible.
+ for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) {
+ if (chart.isDatasetVisible(i)) {
+ meta = chart.getDatasetMeta(i);
+ if (meta.xAxisID === me.id || meta.yAxisID === me.id) {
+ return true;
+ }
+ }
+ }
+
+ return false;
+ },
+
+ /**
+ * Actually draw the scale on the canvas
+ * @param {object} chartArea - the area of the chart to draw full grid lines on
+ */
+ draw: function(chartArea) {
+ var me = this;
+ var options = me.options;
+
+ if (!me._isVisible()) {
+ return;
+ }
+
+ var chart = me.chart;
+ var context = me.ctx;
+ var globalDefaults = core_defaults.global;
+ var defaultFontColor = globalDefaults.defaultFontColor;
+ var optionTicks = options.ticks.minor;
+ var optionMajorTicks = options.ticks.major || optionTicks;
+ var gridLines = options.gridLines;
+ var scaleLabel = options.scaleLabel;
+ var position = options.position;
+
+ var isRotated = me.labelRotation !== 0;
+ var isMirrored = optionTicks.mirror;
+ var isHorizontal = me.isHorizontal();
+
+ var parseFont = helpers$1.options._parseFont;
+ var ticks = optionTicks.display && optionTicks.autoSkip ? me._autoSkip(me.getTicks()) : me.getTicks();
+ var tickFontColor = valueOrDefault$9(optionTicks.fontColor, defaultFontColor);
+ var tickFont = parseFont(optionTicks);
+ var lineHeight = tickFont.lineHeight;
+ var majorTickFontColor = valueOrDefault$9(optionMajorTicks.fontColor, defaultFontColor);
+ var majorTickFont = parseFont(optionMajorTicks);
+ var tickPadding = optionTicks.padding;
+ var labelOffset = optionTicks.labelOffset;
+
+ var tl = gridLines.drawTicks ? gridLines.tickMarkLength : 0;
+
+ var scaleLabelFontColor = valueOrDefault$9(scaleLabel.fontColor, defaultFontColor);
+ var scaleLabelFont = parseFont(scaleLabel);
+ var scaleLabelPadding = helpers$1.options.toPadding(scaleLabel.padding);
+ var labelRotationRadians = helpers$1.toRadians(me.labelRotation);
+
+ var itemsToDraw = [];
+
+ var axisWidth = gridLines.drawBorder ? valueAtIndexOrDefault(gridLines.lineWidth, 0, 0) : 0;
+ var alignPixel = helpers$1._alignPixel;
+ var borderValue, tickStart, tickEnd;
+
+ if (position === 'top') {
+ borderValue = alignPixel(chart, me.bottom, axisWidth);
+ tickStart = me.bottom - tl;
+ tickEnd = borderValue - axisWidth / 2;
+ } else if (position === 'bottom') {
+ borderValue = alignPixel(chart, me.top, axisWidth);
+ tickStart = borderValue + axisWidth / 2;
+ tickEnd = me.top + tl;
+ } else if (position === 'left') {
+ borderValue = alignPixel(chart, me.right, axisWidth);
+ tickStart = me.right - tl;
+ tickEnd = borderValue - axisWidth / 2;
+ } else {
+ borderValue = alignPixel(chart, me.left, axisWidth);
+ tickStart = borderValue + axisWidth / 2;
+ tickEnd = me.left + tl;
+ }
+
+ var epsilon = 0.0000001; // 0.0000001 is margin in pixels for Accumulated error.
+
+ helpers$1.each(ticks, function(tick, index) {
+ // autoskipper skipped this tick (#4635)
+ if (helpers$1.isNullOrUndef(tick.label)) {
+ return;
+ }
+
+ var label = tick.label;
+ var lineWidth, lineColor, borderDash, borderDashOffset;
+ if (index === me.zeroLineIndex && options.offset === gridLines.offsetGridLines) {
+ // Draw the first index specially
+ lineWidth = gridLines.zeroLineWidth;
+ lineColor = gridLines.zeroLineColor;
+ borderDash = gridLines.zeroLineBorderDash || [];
+ borderDashOffset = gridLines.zeroLineBorderDashOffset || 0.0;
+ } else {
+ lineWidth = valueAtIndexOrDefault(gridLines.lineWidth, index);
+ lineColor = valueAtIndexOrDefault(gridLines.color, index);
+ borderDash = gridLines.borderDash || [];
+ borderDashOffset = gridLines.borderDashOffset || 0.0;
+ }
+
+ // Common properties
+ var tx1, ty1, tx2, ty2, x1, y1, x2, y2, labelX, labelY, textOffset, textAlign;
+ var labelCount = helpers$1.isArray(label) ? label.length : 1;
+ var lineValue = getPixelForGridLine(me, index, gridLines.offsetGridLines);
+
+ if (isHorizontal) {
+ var labelYOffset = tl + tickPadding;
+
+ if (lineValue < me.left - epsilon) {
+ lineColor = 'rgba(0,0,0,0)';
+ }
+
+ tx1 = tx2 = x1 = x2 = alignPixel(chart, lineValue, lineWidth);
+ ty1 = tickStart;
+ ty2 = tickEnd;
+ labelX = me.getPixelForTick(index) + labelOffset; // x values for optionTicks (need to consider offsetLabel option)
+
+ if (position === 'top') {
+ y1 = alignPixel(chart, chartArea.top, axisWidth) + axisWidth / 2;
+ y2 = chartArea.bottom;
+ textOffset = ((!isRotated ? 0.5 : 1) - labelCount) * lineHeight;
+ textAlign = !isRotated ? 'center' : 'left';
+ labelY = me.bottom - labelYOffset;
+ } else {
+ y1 = chartArea.top;
+ y2 = alignPixel(chart, chartArea.bottom, axisWidth) - axisWidth / 2;
+ textOffset = (!isRotated ? 0.5 : 0) * lineHeight;
+ textAlign = !isRotated ? 'center' : 'right';
+ labelY = me.top + labelYOffset;
+ }
+ } else {
+ var labelXOffset = (isMirrored ? 0 : tl) + tickPadding;
+
+ if (lineValue < me.top - epsilon) {
+ lineColor = 'rgba(0,0,0,0)';
+ }
+
+ tx1 = tickStart;
+ tx2 = tickEnd;
+ ty1 = ty2 = y1 = y2 = alignPixel(chart, lineValue, lineWidth);
+ labelY = me.getPixelForTick(index) + labelOffset;
+ textOffset = (1 - labelCount) * lineHeight / 2;
+
+ if (position === 'left') {
+ x1 = alignPixel(chart, chartArea.left, axisWidth) + axisWidth / 2;
+ x2 = chartArea.right;
+ textAlign = isMirrored ? 'left' : 'right';
+ labelX = me.right - labelXOffset;
+ } else {
+ x1 = chartArea.left;
+ x2 = alignPixel(chart, chartArea.right, axisWidth) - axisWidth / 2;
+ textAlign = isMirrored ? 'right' : 'left';
+ labelX = me.left + labelXOffset;
+ }
+ }
+
+ itemsToDraw.push({
+ tx1: tx1,
+ ty1: ty1,
+ tx2: tx2,
+ ty2: ty2,
+ x1: x1,
+ y1: y1,
+ x2: x2,
+ y2: y2,
+ labelX: labelX,
+ labelY: labelY,
+ glWidth: lineWidth,
+ glColor: lineColor,
+ glBorderDash: borderDash,
+ glBorderDashOffset: borderDashOffset,
+ rotation: -1 * labelRotationRadians,
+ label: label,
+ major: tick.major,
+ textOffset: textOffset,
+ textAlign: textAlign
+ });
+ });
+
+ // Draw all of the tick labels, tick marks, and grid lines at the correct places
+ helpers$1.each(itemsToDraw, function(itemToDraw) {
+ var glWidth = itemToDraw.glWidth;
+ var glColor = itemToDraw.glColor;
+
+ if (gridLines.display && glWidth && glColor) {
+ context.save();
+ context.lineWidth = glWidth;
+ context.strokeStyle = glColor;
+ if (context.setLineDash) {
+ context.setLineDash(itemToDraw.glBorderDash);
+ context.lineDashOffset = itemToDraw.glBorderDashOffset;
+ }
+
+ context.beginPath();
+
+ if (gridLines.drawTicks) {
+ context.moveTo(itemToDraw.tx1, itemToDraw.ty1);
+ context.lineTo(itemToDraw.tx2, itemToDraw.ty2);
+ }
+
+ if (gridLines.drawOnChartArea) {
+ context.moveTo(itemToDraw.x1, itemToDraw.y1);
+ context.lineTo(itemToDraw.x2, itemToDraw.y2);
+ }
+
+ context.stroke();
+ context.restore();
+ }
+
+ if (optionTicks.display) {
+ // Make sure we draw text in the correct color and font
+ context.save();
+ context.translate(itemToDraw.labelX, itemToDraw.labelY);
+ context.rotate(itemToDraw.rotation);
+ context.font = itemToDraw.major ? majorTickFont.string : tickFont.string;
+ context.fillStyle = itemToDraw.major ? majorTickFontColor : tickFontColor;
+ context.textBaseline = 'middle';
+ context.textAlign = itemToDraw.textAlign;
+
+ var label = itemToDraw.label;
+ var y = itemToDraw.textOffset;
+ if (helpers$1.isArray(label)) {
+ for (var i = 0; i < label.length; ++i) {
+ // We just make sure the multiline element is a string here..
+ context.fillText('' + label[i], 0, y);
+ y += lineHeight;
+ }
+ } else {
+ context.fillText(label, 0, y);
+ }
+ context.restore();
+ }
+ });
+
+ if (scaleLabel.display) {
+ // Draw the scale label
+ var scaleLabelX;
+ var scaleLabelY;
+ var rotation = 0;
+ var halfLineHeight = scaleLabelFont.lineHeight / 2;
+
+ if (isHorizontal) {
+ scaleLabelX = me.left + ((me.right - me.left) / 2); // midpoint of the width
+ scaleLabelY = position === 'bottom'
+ ? me.bottom - halfLineHeight - scaleLabelPadding.bottom
+ : me.top + halfLineHeight + scaleLabelPadding.top;
+ } else {
+ var isLeft = position === 'left';
+ scaleLabelX = isLeft
+ ? me.left + halfLineHeight + scaleLabelPadding.top
+ : me.right - halfLineHeight - scaleLabelPadding.top;
+ scaleLabelY = me.top + ((me.bottom - me.top) / 2);
+ rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI;
+ }
+
+ context.save();
+ context.translate(scaleLabelX, scaleLabelY);
+ context.rotate(rotation);
+ context.textAlign = 'center';
+ context.textBaseline = 'middle';
+ context.fillStyle = scaleLabelFontColor; // render in correct colour
+ context.font = scaleLabelFont.string;
+ context.fillText(scaleLabel.labelString, 0, 0);
+ context.restore();
+ }
+
+ if (axisWidth) {
+ // Draw the line at the edge of the axis
+ var firstLineWidth = axisWidth;
+ var lastLineWidth = valueAtIndexOrDefault(gridLines.lineWidth, ticks.length - 1, 0);
+ var x1, x2, y1, y2;
+
+ if (isHorizontal) {
+ x1 = alignPixel(chart, me.left, firstLineWidth) - firstLineWidth / 2;
+ x2 = alignPixel(chart, me.right, lastLineWidth) + lastLineWidth / 2;
+ y1 = y2 = borderValue;
+ } else {
+ y1 = alignPixel(chart, me.top, firstLineWidth) - firstLineWidth / 2;
+ y2 = alignPixel(chart, me.bottom, lastLineWidth) + lastLineWidth / 2;
+ x1 = x2 = borderValue;
+ }
+
+ context.lineWidth = axisWidth;
+ context.strokeStyle = valueAtIndexOrDefault(gridLines.color, 0);
+ context.beginPath();
+ context.moveTo(x1, y1);
+ context.lineTo(x2, y2);
+ context.stroke();
+ }
+ }
+});
+
+var defaultConfig = {
+ position: 'bottom'
+};
+
+var scale_category = core_scale.extend({
+ /**
+ * Internal function to get the correct labels. If data.xLabels or data.yLabels are defined, use those
+ * else fall back to data.labels
+ * @private
+ */
+ getLabels: function() {
+ var data = this.chart.data;
+ return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels;
+ },
+
+ determineDataLimits: function() {
+ var me = this;
+ var labels = me.getLabels();
+ me.minIndex = 0;
+ me.maxIndex = labels.length - 1;
+ var findIndex;
+
+ if (me.options.ticks.min !== undefined) {
+ // user specified min value
+ findIndex = labels.indexOf(me.options.ticks.min);
+ me.minIndex = findIndex !== -1 ? findIndex : me.minIndex;
+ }
+
+ if (me.options.ticks.max !== undefined) {
+ // user specified max value
+ findIndex = labels.indexOf(me.options.ticks.max);
+ me.maxIndex = findIndex !== -1 ? findIndex : me.maxIndex;
+ }
+
+ me.min = labels[me.minIndex];
+ me.max = labels[me.maxIndex];
+ },
+
+ buildTicks: function() {
+ var me = this;
+ var labels = me.getLabels();
+ // If we are viewing some subset of labels, slice the original array
+ me.ticks = (me.minIndex === 0 && me.maxIndex === labels.length - 1) ? labels : labels.slice(me.minIndex, me.maxIndex + 1);
+ },
+
+ getLabelForIndex: function(index, datasetIndex) {
+ var me = this;
+ var chart = me.chart;
+
+ if (chart.getDatasetMeta(datasetIndex).controller._getValueScaleId() === me.id) {
+ return me.getRightValue(chart.data.datasets[datasetIndex].data[index]);
+ }
+
+ return me.ticks[index - me.minIndex];
+ },
+
+ // Used to get data value locations. Value can either be an index or a numerical value
+ getPixelForValue: function(value, index) {
+ var me = this;
+ var offset = me.options.offset;
+ // 1 is added because we need the length but we have the indexes
+ var offsetAmt = Math.max((me.maxIndex + 1 - me.minIndex - (offset ? 0 : 1)), 1);
+
+ // If value is a data object, then index is the index in the data array,
+ // not the index of the scale. We need to change that.
+ var valueCategory;
+ if (value !== undefined && value !== null) {
+ valueCategory = me.isHorizontal() ? value.x : value.y;
+ }
+ if (valueCategory !== undefined || (value !== undefined && isNaN(index))) {
+ var labels = me.getLabels();
+ value = valueCategory || value;
+ var idx = labels.indexOf(value);
+ index = idx !== -1 ? idx : index;
+ }
+
+ if (me.isHorizontal()) {
+ var valueWidth = me.width / offsetAmt;
+ var widthOffset = (valueWidth * (index - me.minIndex));
+
+ if (offset) {
+ widthOffset += (valueWidth / 2);
+ }
+
+ return me.left + widthOffset;
+ }
+ var valueHeight = me.height / offsetAmt;
+ var heightOffset = (valueHeight * (index - me.minIndex));
+
+ if (offset) {
+ heightOffset += (valueHeight / 2);
+ }
+
+ return me.top + heightOffset;
+ },
+
+ getPixelForTick: function(index) {
+ return this.getPixelForValue(this.ticks[index], index + this.minIndex, null);
+ },
+
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var offset = me.options.offset;
+ var value;
+ var offsetAmt = Math.max((me._ticks.length - (offset ? 0 : 1)), 1);
+ var horz = me.isHorizontal();
+ var valueDimension = (horz ? me.width : me.height) / offsetAmt;
+
+ pixel -= horz ? me.left : me.top;
+
+ if (offset) {
+ pixel -= (valueDimension / 2);
+ }
+
+ if (pixel <= 0) {
+ value = 0;
+ } else {
+ value = Math.round(pixel / valueDimension);
+ }
+
+ return value + me.minIndex;
+ },
+
+ getBasePixel: function() {
+ return this.bottom;
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults = defaultConfig;
+scale_category._defaults = _defaults;
+
+var noop = helpers$1.noop;
+var isNullOrUndef = helpers$1.isNullOrUndef;
+
+/**
+ * Generate a set of linear ticks
+ * @param generationOptions the options used to generate the ticks
+ * @param dataRange the range of the data
+ * @returns {number[]} array of tick values
+ */
+function generateTicks(generationOptions, dataRange) {
+ var ticks = [];
+ // To get a "nice" value for the tick spacing, we will use the appropriately named
+ // "nice number" algorithm. See https://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks
+ // for details.
+
+ var MIN_SPACING = 1e-14;
+ var stepSize = generationOptions.stepSize;
+ var unit = stepSize || 1;
+ var maxNumSpaces = generationOptions.maxTicks - 1;
+ var min = generationOptions.min;
+ var max = generationOptions.max;
+ var precision = generationOptions.precision;
+ var rmin = dataRange.min;
+ var rmax = dataRange.max;
+ var spacing = helpers$1.niceNum((rmax - rmin) / maxNumSpaces / unit) * unit;
+ var factor, niceMin, niceMax, numSpaces;
+
+ // Beyond MIN_SPACING floating point numbers being to lose precision
+ // such that we can't do the math necessary to generate ticks
+ if (spacing < MIN_SPACING && isNullOrUndef(min) && isNullOrUndef(max)) {
+ return [rmin, rmax];
+ }
+
+ numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing);
+ if (numSpaces > maxNumSpaces) {
+ // If the calculated num of spaces exceeds maxNumSpaces, recalculate it
+ spacing = helpers$1.niceNum(numSpaces * spacing / maxNumSpaces / unit) * unit;
+ }
+
+ if (stepSize || isNullOrUndef(precision)) {
+ // If a precision is not specified, calculate factor based on spacing
+ factor = Math.pow(10, helpers$1._decimalPlaces(spacing));
+ } else {
+ // If the user specified a precision, round to that number of decimal places
+ factor = Math.pow(10, precision);
+ spacing = Math.ceil(spacing * factor) / factor;
+ }
+
+ niceMin = Math.floor(rmin / spacing) * spacing;
+ niceMax = Math.ceil(rmax / spacing) * spacing;
+
+ // If min, max and stepSize is set and they make an evenly spaced scale use it.
+ if (stepSize) {
+ // If very close to our whole number, use it.
+ if (!isNullOrUndef(min) && helpers$1.almostWhole(min / spacing, spacing / 1000)) {
+ niceMin = min;
+ }
+ if (!isNullOrUndef(max) && helpers$1.almostWhole(max / spacing, spacing / 1000)) {
+ niceMax = max;
+ }
+ }
+
+ numSpaces = (niceMax - niceMin) / spacing;
+ // If very close to our rounded value, use it.
+ if (helpers$1.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {
+ numSpaces = Math.round(numSpaces);
+ } else {
+ numSpaces = Math.ceil(numSpaces);
+ }
+
+ niceMin = Math.round(niceMin * factor) / factor;
+ niceMax = Math.round(niceMax * factor) / factor;
+ ticks.push(isNullOrUndef(min) ? niceMin : min);
+ for (var j = 1; j < numSpaces; ++j) {
+ ticks.push(Math.round((niceMin + j * spacing) * factor) / factor);
+ }
+ ticks.push(isNullOrUndef(max) ? niceMax : max);
+
+ return ticks;
+}
+
+var scale_linearbase = core_scale.extend({
+ getRightValue: function(value) {
+ if (typeof value === 'string') {
+ return +value;
+ }
+ return core_scale.prototype.getRightValue.call(this, value);
+ },
+
+ handleTickRangeOptions: function() {
+ var me = this;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+
+ // If we are forcing it to begin at 0, but 0 will already be rendered on the chart,
+ // do nothing since that would make the chart weird. If the user really wants a weird chart
+ // axis, they can manually override it
+ if (tickOpts.beginAtZero) {
+ var minSign = helpers$1.sign(me.min);
+ var maxSign = helpers$1.sign(me.max);
+
+ if (minSign < 0 && maxSign < 0) {
+ // move the top up to 0
+ me.max = 0;
+ } else if (minSign > 0 && maxSign > 0) {
+ // move the bottom down to 0
+ me.min = 0;
+ }
+ }
+
+ var setMin = tickOpts.min !== undefined || tickOpts.suggestedMin !== undefined;
+ var setMax = tickOpts.max !== undefined || tickOpts.suggestedMax !== undefined;
+
+ if (tickOpts.min !== undefined) {
+ me.min = tickOpts.min;
+ } else if (tickOpts.suggestedMin !== undefined) {
+ if (me.min === null) {
+ me.min = tickOpts.suggestedMin;
+ } else {
+ me.min = Math.min(me.min, tickOpts.suggestedMin);
+ }
+ }
+
+ if (tickOpts.max !== undefined) {
+ me.max = tickOpts.max;
+ } else if (tickOpts.suggestedMax !== undefined) {
+ if (me.max === null) {
+ me.max = tickOpts.suggestedMax;
+ } else {
+ me.max = Math.max(me.max, tickOpts.suggestedMax);
+ }
+ }
+
+ if (setMin !== setMax) {
+ // We set the min or the max but not both.
+ // So ensure that our range is good
+ // Inverted or 0 length range can happen when
+ // ticks.min is set, and no datasets are visible
+ if (me.min >= me.max) {
+ if (setMin) {
+ me.max = me.min + 1;
+ } else {
+ me.min = me.max - 1;
+ }
+ }
+ }
+
+ if (me.min === me.max) {
+ me.max++;
+
+ if (!tickOpts.beginAtZero) {
+ me.min--;
+ }
+ }
+ },
+
+ getTickLimit: function() {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var stepSize = tickOpts.stepSize;
+ var maxTicksLimit = tickOpts.maxTicksLimit;
+ var maxTicks;
+
+ if (stepSize) {
+ maxTicks = Math.ceil(me.max / stepSize) - Math.floor(me.min / stepSize) + 1;
+ } else {
+ maxTicks = me._computeTickLimit();
+ maxTicksLimit = maxTicksLimit || 11;
+ }
+
+ if (maxTicksLimit) {
+ maxTicks = Math.min(maxTicksLimit, maxTicks);
+ }
+
+ return maxTicks;
+ },
+
+ _computeTickLimit: function() {
+ return Number.POSITIVE_INFINITY;
+ },
+
+ handleDirectionalChanges: noop,
+
+ buildTicks: function() {
+ var me = this;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+
+ // Figure out what the max number of ticks we can support it is based on the size of
+ // the axis area. For now, we say that the minimum tick spacing in pixels must be 40
+ // We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
+ // the graph. Make sure we always have at least 2 ticks
+ var maxTicks = me.getTickLimit();
+ maxTicks = Math.max(2, maxTicks);
+
+ var numericGeneratorOptions = {
+ maxTicks: maxTicks,
+ min: tickOpts.min,
+ max: tickOpts.max,
+ precision: tickOpts.precision,
+ stepSize: helpers$1.valueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize)
+ };
+ var ticks = me.ticks = generateTicks(numericGeneratorOptions, me);
+
+ me.handleDirectionalChanges();
+
+ // At this point, we need to update our max and min given the tick values since we have expanded the
+ // range of the scale
+ me.max = helpers$1.max(ticks);
+ me.min = helpers$1.min(ticks);
+
+ if (tickOpts.reverse) {
+ ticks.reverse();
+
+ me.start = me.max;
+ me.end = me.min;
+ } else {
+ me.start = me.min;
+ me.end = me.max;
+ }
+ },
+
+ convertTicksToLabels: function() {
+ var me = this;
+ me.ticksAsNumbers = me.ticks.slice();
+ me.zeroLineIndex = me.ticks.indexOf(0);
+
+ core_scale.prototype.convertTicksToLabels.call(me);
+ }
+});
+
+var defaultConfig$1 = {
+ position: 'left',
+ ticks: {
+ callback: core_ticks.formatters.linear
+ }
+};
+
+var scale_linear = scale_linearbase.extend({
+ determineDataLimits: function() {
+ var me = this;
+ var opts = me.options;
+ var chart = me.chart;
+ var data = chart.data;
+ var datasets = data.datasets;
+ var isHorizontal = me.isHorizontal();
+ var DEFAULT_MIN = 0;
+ var DEFAULT_MAX = 1;
+
+ function IDMatches(meta) {
+ return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
+ }
+
+ // First Calculate the range
+ me.min = null;
+ me.max = null;
+
+ var hasStacks = opts.stacked;
+ if (hasStacks === undefined) {
+ helpers$1.each(datasets, function(dataset, datasetIndex) {
+ if (hasStacks) {
+ return;
+ }
+
+ var meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
+ meta.stack !== undefined) {
+ hasStacks = true;
+ }
+ });
+ }
+
+ if (opts.stacked || hasStacks) {
+ var valuesPerStack = {};
+
+ helpers$1.each(datasets, function(dataset, datasetIndex) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ var key = [
+ meta.type,
+ // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
+ ((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
+ meta.stack
+ ].join('.');
+
+ if (valuesPerStack[key] === undefined) {
+ valuesPerStack[key] = {
+ positiveValues: [],
+ negativeValues: []
+ };
+ }
+
+ // Store these per type
+ var positiveValues = valuesPerStack[key].positiveValues;
+ var negativeValues = valuesPerStack[key].negativeValues;
+
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ helpers$1.each(dataset.data, function(rawValue, index) {
+ var value = +me.getRightValue(rawValue);
+ if (isNaN(value) || meta.data[index].hidden) {
+ return;
+ }
+
+ positiveValues[index] = positiveValues[index] || 0;
+ negativeValues[index] = negativeValues[index] || 0;
+
+ if (opts.relativePoints) {
+ positiveValues[index] = 100;
+ } else if (value < 0) {
+ negativeValues[index] += value;
+ } else {
+ positiveValues[index] += value;
+ }
+ });
+ }
+ });
+
+ helpers$1.each(valuesPerStack, function(valuesForType) {
+ var values = valuesForType.positiveValues.concat(valuesForType.negativeValues);
+ var minVal = helpers$1.min(values);
+ var maxVal = helpers$1.max(values);
+ me.min = me.min === null ? minVal : Math.min(me.min, minVal);
+ me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
+ });
+
+ } else {
+ helpers$1.each(datasets, function(dataset, datasetIndex) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ helpers$1.each(dataset.data, function(rawValue, index) {
+ var value = +me.getRightValue(rawValue);
+ if (isNaN(value) || meta.data[index].hidden) {
+ return;
+ }
+
+ if (me.min === null) {
+ me.min = value;
+ } else if (value < me.min) {
+ me.min = value;
+ }
+
+ if (me.max === null) {
+ me.max = value;
+ } else if (value > me.max) {
+ me.max = value;
+ }
+ });
+ }
+ });
+ }
+
+ me.min = isFinite(me.min) && !isNaN(me.min) ? me.min : DEFAULT_MIN;
+ me.max = isFinite(me.max) && !isNaN(me.max) ? me.max : DEFAULT_MAX;
+
+ // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
+ this.handleTickRangeOptions();
+ },
+
+ // Returns the maximum number of ticks based on the scale dimension
+ _computeTickLimit: function() {
+ var me = this;
+ var tickFont;
+
+ if (me.isHorizontal()) {
+ return Math.ceil(me.width / 40);
+ }
+ tickFont = helpers$1.options._parseFont(me.options.ticks);
+ return Math.ceil(me.height / tickFont.lineHeight);
+ },
+
+ // Called after the ticks are built. We need
+ handleDirectionalChanges: function() {
+ if (!this.isHorizontal()) {
+ // We are in a vertical orientation. The top value is the highest. So reverse the array
+ this.ticks.reverse();
+ }
+ },
+
+ getLabelForIndex: function(index, datasetIndex) {
+ return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
+ },
+
+ // Utils
+ getPixelForValue: function(value) {
+ // This must be called after fit has been run so that
+ // this.left, this.top, this.right, and this.bottom have been defined
+ var me = this;
+ var start = me.start;
+
+ var rightValue = +me.getRightValue(value);
+ var pixel;
+ var range = me.end - start;
+
+ if (me.isHorizontal()) {
+ pixel = me.left + (me.width / range * (rightValue - start));
+ } else {
+ pixel = me.bottom - (me.height / range * (rightValue - start));
+ }
+ return pixel;
+ },
+
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var isHorizontal = me.isHorizontal();
+ var innerDimension = isHorizontal ? me.width : me.height;
+ var offset = (isHorizontal ? pixel - me.left : me.bottom - pixel) / innerDimension;
+ return me.start + ((me.end - me.start) * offset);
+ },
+
+ getPixelForTick: function(index) {
+ return this.getPixelForValue(this.ticksAsNumbers[index]);
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults$1 = defaultConfig$1;
+scale_linear._defaults = _defaults$1;
+
+var valueOrDefault$a = helpers$1.valueOrDefault;
+
+/**
+ * Generate a set of logarithmic ticks
+ * @param generationOptions the options used to generate the ticks
+ * @param dataRange the range of the data
+ * @returns {number[]} array of tick values
+ */
+function generateTicks$1(generationOptions, dataRange) {
+ var ticks = [];
+
+ var tickVal = valueOrDefault$a(generationOptions.min, Math.pow(10, Math.floor(helpers$1.log10(dataRange.min))));
+
+ var endExp = Math.floor(helpers$1.log10(dataRange.max));
+ var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp));
+ var exp, significand;
+
+ if (tickVal === 0) {
+ exp = Math.floor(helpers$1.log10(dataRange.minNotZero));
+ significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp));
+
+ ticks.push(tickVal);
+ tickVal = significand * Math.pow(10, exp);
+ } else {
+ exp = Math.floor(helpers$1.log10(tickVal));
+ significand = Math.floor(tickVal / Math.pow(10, exp));
+ }
+ var precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1;
+
+ do {
+ ticks.push(tickVal);
+
+ ++significand;
+ if (significand === 10) {
+ significand = 1;
+ ++exp;
+ precision = exp >= 0 ? 1 : precision;
+ }
+
+ tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision;
+ } while (exp < endExp || (exp === endExp && significand < endSignificand));
+
+ var lastTick = valueOrDefault$a(generationOptions.max, tickVal);
+ ticks.push(lastTick);
+
+ return ticks;
+}
+
+var defaultConfig$2 = {
+ position: 'left',
+
+ // label settings
+ ticks: {
+ callback: core_ticks.formatters.logarithmic
+ }
+};
+
+// TODO(v3): change this to positiveOrDefault
+function nonNegativeOrDefault(value, defaultValue) {
+ return helpers$1.isFinite(value) && value >= 0 ? value : defaultValue;
+}
+
+var scale_logarithmic = core_scale.extend({
+ determineDataLimits: function() {
+ var me = this;
+ var opts = me.options;
+ var chart = me.chart;
+ var data = chart.data;
+ var datasets = data.datasets;
+ var isHorizontal = me.isHorizontal();
+ function IDMatches(meta) {
+ return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
+ }
+
+ // Calculate Range
+ me.min = null;
+ me.max = null;
+ me.minNotZero = null;
+
+ var hasStacks = opts.stacked;
+ if (hasStacks === undefined) {
+ helpers$1.each(datasets, function(dataset, datasetIndex) {
+ if (hasStacks) {
+ return;
+ }
+
+ var meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
+ meta.stack !== undefined) {
+ hasStacks = true;
+ }
+ });
+ }
+
+ if (opts.stacked || hasStacks) {
+ var valuesPerStack = {};
+
+ helpers$1.each(datasets, function(dataset, datasetIndex) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ var key = [
+ meta.type,
+ // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
+ ((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
+ meta.stack
+ ].join('.');
+
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ if (valuesPerStack[key] === undefined) {
+ valuesPerStack[key] = [];
+ }
+
+ helpers$1.each(dataset.data, function(rawValue, index) {
+ var values = valuesPerStack[key];
+ var value = +me.getRightValue(rawValue);
+ // invalid, hidden and negative values are ignored
+ if (isNaN(value) || meta.data[index].hidden || value < 0) {
+ return;
+ }
+ values[index] = values[index] || 0;
+ values[index] += value;
+ });
+ }
+ });
+
+ helpers$1.each(valuesPerStack, function(valuesForType) {
+ if (valuesForType.length > 0) {
+ var minVal = helpers$1.min(valuesForType);
+ var maxVal = helpers$1.max(valuesForType);
+ me.min = me.min === null ? minVal : Math.min(me.min, minVal);
+ me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
+ }
+ });
+
+ } else {
+ helpers$1.each(datasets, function(dataset, datasetIndex) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ helpers$1.each(dataset.data, function(rawValue, index) {
+ var value = +me.getRightValue(rawValue);
+ // invalid, hidden and negative values are ignored
+ if (isNaN(value) || meta.data[index].hidden || value < 0) {
+ return;
+ }
+
+ if (me.min === null) {
+ me.min = value;
+ } else if (value < me.min) {
+ me.min = value;
+ }
+
+ if (me.max === null) {
+ me.max = value;
+ } else if (value > me.max) {
+ me.max = value;
+ }
+
+ if (value !== 0 && (me.minNotZero === null || value < me.minNotZero)) {
+ me.minNotZero = value;
+ }
+ });
+ }
+ });
+ }
+
+ // Common base implementation to handle ticks.min, ticks.max
+ this.handleTickRangeOptions();
+ },
+
+ handleTickRangeOptions: function() {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var DEFAULT_MIN = 1;
+ var DEFAULT_MAX = 10;
+
+ me.min = nonNegativeOrDefault(tickOpts.min, me.min);
+ me.max = nonNegativeOrDefault(tickOpts.max, me.max);
+
+ if (me.min === me.max) {
+ if (me.min !== 0 && me.min !== null) {
+ me.min = Math.pow(10, Math.floor(helpers$1.log10(me.min)) - 1);
+ me.max = Math.pow(10, Math.floor(helpers$1.log10(me.max)) + 1);
+ } else {
+ me.min = DEFAULT_MIN;
+ me.max = DEFAULT_MAX;
+ }
+ }
+ if (me.min === null) {
+ me.min = Math.pow(10, Math.floor(helpers$1.log10(me.max)) - 1);
+ }
+ if (me.max === null) {
+ me.max = me.min !== 0
+ ? Math.pow(10, Math.floor(helpers$1.log10(me.min)) + 1)
+ : DEFAULT_MAX;
+ }
+ if (me.minNotZero === null) {
+ if (me.min > 0) {
+ me.minNotZero = me.min;
+ } else if (me.max < 1) {
+ me.minNotZero = Math.pow(10, Math.floor(helpers$1.log10(me.max)));
+ } else {
+ me.minNotZero = DEFAULT_MIN;
+ }
+ }
+ },
+
+ buildTicks: function() {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var reverse = !me.isHorizontal();
+
+ var generationOptions = {
+ min: nonNegativeOrDefault(tickOpts.min),
+ max: nonNegativeOrDefault(tickOpts.max)
+ };
+ var ticks = me.ticks = generateTicks$1(generationOptions, me);
+
+ // At this point, we need to update our max and min given the tick values since we have expanded the
+ // range of the scale
+ me.max = helpers$1.max(ticks);
+ me.min = helpers$1.min(ticks);
+
+ if (tickOpts.reverse) {
+ reverse = !reverse;
+ me.start = me.max;
+ me.end = me.min;
+ } else {
+ me.start = me.min;
+ me.end = me.max;
+ }
+ if (reverse) {
+ ticks.reverse();
+ }
+ },
+
+ convertTicksToLabels: function() {
+ this.tickValues = this.ticks.slice();
+
+ core_scale.prototype.convertTicksToLabels.call(this);
+ },
+
+ // Get the correct tooltip label
+ getLabelForIndex: function(index, datasetIndex) {
+ return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
+ },
+
+ getPixelForTick: function(index) {
+ return this.getPixelForValue(this.tickValues[index]);
+ },
+
+ /**
+ * Returns the value of the first tick.
+ * @param {number} value - The minimum not zero value.
+ * @return {number} The first tick value.
+ * @private
+ */
+ _getFirstTickValue: function(value) {
+ var exp = Math.floor(helpers$1.log10(value));
+ var significand = Math.floor(value / Math.pow(10, exp));
+
+ return significand * Math.pow(10, exp);
+ },
+
+ getPixelForValue: function(value) {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var reverse = tickOpts.reverse;
+ var log10 = helpers$1.log10;
+ var firstTickValue = me._getFirstTickValue(me.minNotZero);
+ var offset = 0;
+ var innerDimension, pixel, start, end, sign;
+
+ value = +me.getRightValue(value);
+ if (reverse) {
+ start = me.end;
+ end = me.start;
+ sign = -1;
+ } else {
+ start = me.start;
+ end = me.end;
+ sign = 1;
+ }
+ if (me.isHorizontal()) {
+ innerDimension = me.width;
+ pixel = reverse ? me.right : me.left;
+ } else {
+ innerDimension = me.height;
+ sign *= -1; // invert, since the upper-left corner of the canvas is at pixel (0, 0)
+ pixel = reverse ? me.top : me.bottom;
+ }
+ if (value !== start) {
+ if (start === 0) { // include zero tick
+ offset = valueOrDefault$a(tickOpts.fontSize, core_defaults.global.defaultFontSize);
+ innerDimension -= offset;
+ start = firstTickValue;
+ }
+ if (value !== 0) {
+ offset += innerDimension / (log10(end) - log10(start)) * (log10(value) - log10(start));
+ }
+ pixel += sign * offset;
+ }
+ return pixel;
+ },
+
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var reverse = tickOpts.reverse;
+ var log10 = helpers$1.log10;
+ var firstTickValue = me._getFirstTickValue(me.minNotZero);
+ var innerDimension, start, end, value;
+
+ if (reverse) {
+ start = me.end;
+ end = me.start;
+ } else {
+ start = me.start;
+ end = me.end;
+ }
+ if (me.isHorizontal()) {
+ innerDimension = me.width;
+ value = reverse ? me.right - pixel : pixel - me.left;
+ } else {
+ innerDimension = me.height;
+ value = reverse ? pixel - me.top : me.bottom - pixel;
+ }
+ if (value !== start) {
+ if (start === 0) { // include zero tick
+ var offset = valueOrDefault$a(tickOpts.fontSize, core_defaults.global.defaultFontSize);
+ value -= offset;
+ innerDimension -= offset;
+ start = firstTickValue;
+ }
+ value *= log10(end) - log10(start);
+ value /= innerDimension;
+ value = Math.pow(10, log10(start) + value);
+ }
+ return value;
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults$2 = defaultConfig$2;
+scale_logarithmic._defaults = _defaults$2;
+
+var valueOrDefault$b = helpers$1.valueOrDefault;
+var valueAtIndexOrDefault$1 = helpers$1.valueAtIndexOrDefault;
+var resolve$7 = helpers$1.options.resolve;
+
+var defaultConfig$3 = {
+ display: true,
+
+ // Boolean - Whether to animate scaling the chart from the centre
+ animate: true,
+ position: 'chartArea',
+
+ angleLines: {
+ display: true,
+ color: 'rgba(0, 0, 0, 0.1)',
+ lineWidth: 1,
+ borderDash: [],
+ borderDashOffset: 0.0
+ },
+
+ gridLines: {
+ circular: false
+ },
+
+ // label settings
+ ticks: {
+ // Boolean - Show a backdrop to the scale label
+ showLabelBackdrop: true,
+
+ // String - The colour of the label backdrop
+ backdropColor: 'rgba(255,255,255,0.75)',
+
+ // Number - The backdrop padding above & below the label in pixels
+ backdropPaddingY: 2,
+
+ // Number - The backdrop padding to the side of the label in pixels
+ backdropPaddingX: 2,
+
+ callback: core_ticks.formatters.linear
+ },
+
+ pointLabels: {
+ // Boolean - if true, show point labels
+ display: true,
+
+ // Number - Point label font size in pixels
+ fontSize: 10,
+
+ // Function - Used to convert point labels
+ callback: function(label) {
+ return label;
+ }
+ }
+};
+
+function getValueCount(scale) {
+ var opts = scale.options;
+ return opts.angleLines.display || opts.pointLabels.display ? scale.chart.data.labels.length : 0;
+}
+
+function getTickBackdropHeight(opts) {
+ var tickOpts = opts.ticks;
+
+ if (tickOpts.display && opts.display) {
+ return valueOrDefault$b(tickOpts.fontSize, core_defaults.global.defaultFontSize) + tickOpts.backdropPaddingY * 2;
+ }
+ return 0;
+}
+
+function measureLabelSize(ctx, lineHeight, label) {
+ if (helpers$1.isArray(label)) {
+ return {
+ w: helpers$1.longestText(ctx, ctx.font, label),
+ h: label.length * lineHeight
+ };
+ }
+
+ return {
+ w: ctx.measureText(label).width,
+ h: lineHeight
+ };
+}
+
+function determineLimits(angle, pos, size, min, max) {
+ if (angle === min || angle === max) {
+ return {
+ start: pos - (size / 2),
+ end: pos + (size / 2)
+ };
+ } else if (angle < min || angle > max) {
+ return {
+ start: pos - size,
+ end: pos
+ };
+ }
+
+ return {
+ start: pos,
+ end: pos + size
+ };
+}
+
+/**
+ * Helper function to fit a radial linear scale with point labels
+ */
+function fitWithPointLabels(scale) {
+
+ // Right, this is really confusing and there is a lot of maths going on here
+ // The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
+ //
+ // Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
+ //
+ // Solution:
+ //
+ // We assume the radius of the polygon is half the size of the canvas at first
+ // at each index we check if the text overlaps.
+ //
+ // Where it does, we store that angle and that index.
+ //
+ // After finding the largest index and angle we calculate how much we need to remove
+ // from the shape radius to move the point inwards by that x.
+ //
+ // We average the left and right distances to get the maximum shape radius that can fit in the box
+ // along with labels.
+ //
+ // Once we have that, we can find the centre point for the chart, by taking the x text protrusion
+ // on each side, removing that from the size, halving it and adding the left x protrusion width.
+ //
+ // This will mean we have a shape fitted to the canvas, as large as it can be with the labels
+ // and position it in the most space efficient manner
+ //
+ // https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif
+
+ var plFont = helpers$1.options._parseFont(scale.options.pointLabels);
+
+ // Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.
+ // Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points
+ var furthestLimits = {
+ l: 0,
+ r: scale.width,
+ t: 0,
+ b: scale.height - scale.paddingTop
+ };
+ var furthestAngles = {};
+ var i, textSize, pointPosition;
+
+ scale.ctx.font = plFont.string;
+ scale._pointLabelSizes = [];
+
+ var valueCount = getValueCount(scale);
+ for (i = 0; i < valueCount; i++) {
+ pointPosition = scale.getPointPosition(i, scale.drawingArea + 5);
+ textSize = measureLabelSize(scale.ctx, plFont.lineHeight, scale.pointLabels[i] || '');
+ scale._pointLabelSizes[i] = textSize;
+
+ // Add quarter circle to make degree 0 mean top of circle
+ var angleRadians = scale.getIndexAngle(i);
+ var angle = helpers$1.toDegrees(angleRadians) % 360;
+ var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);
+ var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);
+
+ if (hLimits.start < furthestLimits.l) {
+ furthestLimits.l = hLimits.start;
+ furthestAngles.l = angleRadians;
+ }
+
+ if (hLimits.end > furthestLimits.r) {
+ furthestLimits.r = hLimits.end;
+ furthestAngles.r = angleRadians;
+ }
+
+ if (vLimits.start < furthestLimits.t) {
+ furthestLimits.t = vLimits.start;
+ furthestAngles.t = angleRadians;
+ }
+
+ if (vLimits.end > furthestLimits.b) {
+ furthestLimits.b = vLimits.end;
+ furthestAngles.b = angleRadians;
+ }
+ }
+
+ scale.setReductions(scale.drawingArea, furthestLimits, furthestAngles);
+}
+
+function getTextAlignForAngle(angle) {
+ if (angle === 0 || angle === 180) {
+ return 'center';
+ } else if (angle < 180) {
+ return 'left';
+ }
+
+ return 'right';
+}
+
+function fillText(ctx, text, position, lineHeight) {
+ var y = position.y + lineHeight / 2;
+ var i, ilen;
+
+ if (helpers$1.isArray(text)) {
+ for (i = 0, ilen = text.length; i < ilen; ++i) {
+ ctx.fillText(text[i], position.x, y);
+ y += lineHeight;
+ }
+ } else {
+ ctx.fillText(text, position.x, y);
+ }
+}
+
+function adjustPointPositionForLabelHeight(angle, textSize, position) {
+ if (angle === 90 || angle === 270) {
+ position.y -= (textSize.h / 2);
+ } else if (angle > 270 || angle < 90) {
+ position.y -= textSize.h;
+ }
+}
+
+function drawPointLabels(scale) {
+ var ctx = scale.ctx;
+ var opts = scale.options;
+ var angleLineOpts = opts.angleLines;
+ var gridLineOpts = opts.gridLines;
+ var pointLabelOpts = opts.pointLabels;
+ var lineWidth = valueOrDefault$b(angleLineOpts.lineWidth, gridLineOpts.lineWidth);
+ var lineColor = valueOrDefault$b(angleLineOpts.color, gridLineOpts.color);
+ var tickBackdropHeight = getTickBackdropHeight(opts);
+
+ ctx.save();
+ ctx.lineWidth = lineWidth;
+ ctx.strokeStyle = lineColor;
+ if (ctx.setLineDash) {
+ ctx.setLineDash(resolve$7([angleLineOpts.borderDash, gridLineOpts.borderDash, []]));
+ ctx.lineDashOffset = resolve$7([angleLineOpts.borderDashOffset, gridLineOpts.borderDashOffset, 0.0]);
+ }
+
+ var outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max);
+
+ // Point Label Font
+ var plFont = helpers$1.options._parseFont(pointLabelOpts);
+
+ ctx.font = plFont.string;
+ ctx.textBaseline = 'middle';
+
+ for (var i = getValueCount(scale) - 1; i >= 0; i--) {
+ if (angleLineOpts.display && lineWidth && lineColor) {
+ var outerPosition = scale.getPointPosition(i, outerDistance);
+ ctx.beginPath();
+ ctx.moveTo(scale.xCenter, scale.yCenter);
+ ctx.lineTo(outerPosition.x, outerPosition.y);
+ ctx.stroke();
+ }
+
+ if (pointLabelOpts.display) {
+ // Extra pixels out for some label spacing
+ var extra = (i === 0 ? tickBackdropHeight / 2 : 0);
+ var pointLabelPosition = scale.getPointPosition(i, outerDistance + extra + 5);
+
+ // Keep this in loop since we may support array properties here
+ var pointLabelFontColor = valueAtIndexOrDefault$1(pointLabelOpts.fontColor, i, core_defaults.global.defaultFontColor);
+ ctx.fillStyle = pointLabelFontColor;
+
+ var angleRadians = scale.getIndexAngle(i);
+ var angle = helpers$1.toDegrees(angleRadians);
+ ctx.textAlign = getTextAlignForAngle(angle);
+ adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition);
+ fillText(ctx, scale.pointLabels[i] || '', pointLabelPosition, plFont.lineHeight);
+ }
+ }
+ ctx.restore();
+}
+
+function drawRadiusLine(scale, gridLineOpts, radius, index) {
+ var ctx = scale.ctx;
+ var circular = gridLineOpts.circular;
+ var valueCount = getValueCount(scale);
+ var lineColor = valueAtIndexOrDefault$1(gridLineOpts.color, index - 1);
+ var lineWidth = valueAtIndexOrDefault$1(gridLineOpts.lineWidth, index - 1);
+ var pointPosition;
+
+ if ((!circular && !valueCount) || !lineColor || !lineWidth) {
+ return;
+ }
+
+ ctx.save();
+ ctx.strokeStyle = lineColor;
+ ctx.lineWidth = lineWidth;
+ if (ctx.setLineDash) {
+ ctx.setLineDash(gridLineOpts.borderDash || []);
+ ctx.lineDashOffset = gridLineOpts.borderDashOffset || 0.0;
+ }
+
+ ctx.beginPath();
+ if (circular) {
+ // Draw circular arcs between the points
+ ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2);
+ } else {
+ // Draw straight lines connecting each index
+ pointPosition = scale.getPointPosition(0, radius);
+ ctx.moveTo(pointPosition.x, pointPosition.y);
+
+ for (var i = 1; i < valueCount; i++) {
+ pointPosition = scale.getPointPosition(i, radius);
+ ctx.lineTo(pointPosition.x, pointPosition.y);
+ }
+ }
+ ctx.closePath();
+ ctx.stroke();
+ ctx.restore();
+}
+
+function numberOrZero(param) {
+ return helpers$1.isNumber(param) ? param : 0;
+}
+
+var scale_radialLinear = scale_linearbase.extend({
+ setDimensions: function() {
+ var me = this;
+
+ // Set the unconstrained dimension before label rotation
+ me.width = me.maxWidth;
+ me.height = me.maxHeight;
+ me.paddingTop = getTickBackdropHeight(me.options) / 2;
+ me.xCenter = Math.floor(me.width / 2);
+ me.yCenter = Math.floor((me.height - me.paddingTop) / 2);
+ me.drawingArea = Math.min(me.height - me.paddingTop, me.width) / 2;
+ },
+
+ determineDataLimits: function() {
+ var me = this;
+ var chart = me.chart;
+ var min = Number.POSITIVE_INFINITY;
+ var max = Number.NEGATIVE_INFINITY;
+
+ helpers$1.each(chart.data.datasets, function(dataset, datasetIndex) {
+ if (chart.isDatasetVisible(datasetIndex)) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+
+ helpers$1.each(dataset.data, function(rawValue, index) {
+ var value = +me.getRightValue(rawValue);
+ if (isNaN(value) || meta.data[index].hidden) {
+ return;
+ }
+
+ min = Math.min(value, min);
+ max = Math.max(value, max);
+ });
+ }
+ });
+
+ me.min = (min === Number.POSITIVE_INFINITY ? 0 : min);
+ me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max);
+
+ // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
+ me.handleTickRangeOptions();
+ },
+
+ // Returns the maximum number of ticks based on the scale dimension
+ _computeTickLimit: function() {
+ return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options));
+ },
+
+ convertTicksToLabels: function() {
+ var me = this;
+
+ scale_linearbase.prototype.convertTicksToLabels.call(me);
+
+ // Point labels
+ me.pointLabels = me.chart.data.labels.map(me.options.pointLabels.callback, me);
+ },
+
+ getLabelForIndex: function(index, datasetIndex) {
+ return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
+ },
+
+ fit: function() {
+ var me = this;
+ var opts = me.options;
+
+ if (opts.display && opts.pointLabels.display) {
+ fitWithPointLabels(me);
+ } else {
+ me.setCenterPoint(0, 0, 0, 0);
+ }
+ },
+
+ /**
+ * Set radius reductions and determine new radius and center point
+ * @private
+ */
+ setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) {
+ var me = this;
+ var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l);
+ var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r);
+ var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t);
+ var radiusReductionBottom = -Math.max(furthestLimits.b - (me.height - me.paddingTop), 0) / Math.cos(furthestAngles.b);
+
+ radiusReductionLeft = numberOrZero(radiusReductionLeft);
+ radiusReductionRight = numberOrZero(radiusReductionRight);
+ radiusReductionTop = numberOrZero(radiusReductionTop);
+ radiusReductionBottom = numberOrZero(radiusReductionBottom);
+
+ me.drawingArea = Math.min(
+ Math.floor(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2),
+ Math.floor(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2));
+ me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom);
+ },
+
+ setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) {
+ var me = this;
+ var maxRight = me.width - rightMovement - me.drawingArea;
+ var maxLeft = leftMovement + me.drawingArea;
+ var maxTop = topMovement + me.drawingArea;
+ var maxBottom = (me.height - me.paddingTop) - bottomMovement - me.drawingArea;
+
+ me.xCenter = Math.floor(((maxLeft + maxRight) / 2) + me.left);
+ me.yCenter = Math.floor(((maxTop + maxBottom) / 2) + me.top + me.paddingTop);
+ },
+
+ getIndexAngle: function(index) {
+ var angleMultiplier = (Math.PI * 2) / getValueCount(this);
+ var startAngle = this.chart.options && this.chart.options.startAngle ?
+ this.chart.options.startAngle :
+ 0;
+
+ var startAngleRadians = startAngle * Math.PI * 2 / 360;
+
+ // Start from the top instead of right, so remove a quarter of the circle
+ return index * angleMultiplier + startAngleRadians;
+ },
+
+ getDistanceFromCenterForValue: function(value) {
+ var me = this;
+
+ if (value === null) {
+ return 0; // null always in center
+ }
+
+ // Take into account half font size + the yPadding of the top value
+ var scalingFactor = me.drawingArea / (me.max - me.min);
+ if (me.options.ticks.reverse) {
+ return (me.max - value) * scalingFactor;
+ }
+ return (value - me.min) * scalingFactor;
+ },
+
+ getPointPosition: function(index, distanceFromCenter) {
+ var me = this;
+ var thisAngle = me.getIndexAngle(index) - (Math.PI / 2);
+ return {
+ x: Math.cos(thisAngle) * distanceFromCenter + me.xCenter,
+ y: Math.sin(thisAngle) * distanceFromCenter + me.yCenter
+ };
+ },
+
+ getPointPositionForValue: function(index, value) {
+ return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));
+ },
+
+ getBasePosition: function() {
+ var me = this;
+ var min = me.min;
+ var max = me.max;
+
+ return me.getPointPositionForValue(0,
+ me.beginAtZero ? 0 :
+ min < 0 && max < 0 ? max :
+ min > 0 && max > 0 ? min :
+ 0);
+ },
+
+ draw: function() {
+ var me = this;
+ var opts = me.options;
+ var gridLineOpts = opts.gridLines;
+ var tickOpts = opts.ticks;
+
+ if (opts.display) {
+ var ctx = me.ctx;
+ var startAngle = this.getIndexAngle(0);
+ var tickFont = helpers$1.options._parseFont(tickOpts);
+
+ if (opts.angleLines.display || opts.pointLabels.display) {
+ drawPointLabels(me);
+ }
+
+ helpers$1.each(me.ticks, function(label, index) {
+ // Don't draw a centre value (if it is minimum)
+ if (index > 0 || tickOpts.reverse) {
+ var yCenterOffset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]);
+
+ // Draw circular lines around the scale
+ if (gridLineOpts.display && index !== 0) {
+ drawRadiusLine(me, gridLineOpts, yCenterOffset, index);
+ }
+
+ if (tickOpts.display) {
+ var tickFontColor = valueOrDefault$b(tickOpts.fontColor, core_defaults.global.defaultFontColor);
+ ctx.font = tickFont.string;
+
+ ctx.save();
+ ctx.translate(me.xCenter, me.yCenter);
+ ctx.rotate(startAngle);
+
+ if (tickOpts.showLabelBackdrop) {
+ var labelWidth = ctx.measureText(label).width;
+ ctx.fillStyle = tickOpts.backdropColor;
+ ctx.fillRect(
+ -labelWidth / 2 - tickOpts.backdropPaddingX,
+ -yCenterOffset - tickFont.size / 2 - tickOpts.backdropPaddingY,
+ labelWidth + tickOpts.backdropPaddingX * 2,
+ tickFont.size + tickOpts.backdropPaddingY * 2
+ );
+ }
+
+ ctx.textAlign = 'center';
+ ctx.textBaseline = 'middle';
+ ctx.fillStyle = tickFontColor;
+ ctx.fillText(label, 0, -yCenterOffset);
+ ctx.restore();
+ }
+ }
+ });
+ }
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults$3 = defaultConfig$3;
+scale_radialLinear._defaults = _defaults$3;
+
+var valueOrDefault$c = helpers$1.valueOrDefault;
+
+// Integer constants are from the ES6 spec.
+var MIN_INTEGER = Number.MIN_SAFE_INTEGER || -9007199254740991;
+var MAX_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;
+
+var INTERVALS = {
+ millisecond: {
+ common: true,
+ size: 1,
+ steps: [1, 2, 5, 10, 20, 50, 100, 250, 500]
+ },
+ second: {
+ common: true,
+ size: 1000,
+ steps: [1, 2, 5, 10, 15, 30]
+ },
+ minute: {
+ common: true,
+ size: 60000,
+ steps: [1, 2, 5, 10, 15, 30]
+ },
+ hour: {
+ common: true,
+ size: 3600000,
+ steps: [1, 2, 3, 6, 12]
+ },
+ day: {
+ common: true,
+ size: 86400000,
+ steps: [1, 2, 5]
+ },
+ week: {
+ common: false,
+ size: 604800000,
+ steps: [1, 2, 3, 4]
+ },
+ month: {
+ common: true,
+ size: 2.628e9,
+ steps: [1, 2, 3]
+ },
+ quarter: {
+ common: false,
+ size: 7.884e9,
+ steps: [1, 2, 3, 4]
+ },
+ year: {
+ common: true,
+ size: 3.154e10
+ }
+};
+
+var UNITS = Object.keys(INTERVALS);
+
+function sorter(a, b) {
+ return a - b;
+}
+
+function arrayUnique(items) {
+ var hash = {};
+ var out = [];
+ var i, ilen, item;
+
+ for (i = 0, ilen = items.length; i < ilen; ++i) {
+ item = items[i];
+ if (!hash[item]) {
+ hash[item] = true;
+ out.push(item);
+ }
+ }
+
+ return out;
+}
+
+/**
+ * Returns an array of {time, pos} objects used to interpolate a specific `time` or position
+ * (`pos`) on the scale, by searching entries before and after the requested value. `pos` is
+ * a decimal between 0 and 1: 0 being the start of the scale (left or top) and 1 the other
+ * extremity (left + width or top + height). Note that it would be more optimized to directly
+ * store pre-computed pixels, but the scale dimensions are not guaranteed at the time we need
+ * to create the lookup table. The table ALWAYS contains at least two items: min and max.
+ *
+ * @param {number[]} timestamps - timestamps sorted from lowest to highest.
+ * @param {string} distribution - If 'linear', timestamps will be spread linearly along the min
+ * and max range, so basically, the table will contains only two items: {min, 0} and {max, 1}.
+ * If 'series', timestamps will be positioned at the same distance from each other. In this
+ * case, only timestamps that break the time linearity are registered, meaning that in the
+ * best case, all timestamps are linear, the table contains only min and max.
+ */
+function buildLookupTable(timestamps, min, max, distribution) {
+ if (distribution === 'linear' || !timestamps.length) {
+ return [
+ {time: min, pos: 0},
+ {time: max, pos: 1}
+ ];
+ }
+
+ var table = [];
+ var items = [min];
+ var i, ilen, prev, curr, next;
+
+ for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
+ curr = timestamps[i];
+ if (curr > min && curr < max) {
+ items.push(curr);
+ }
+ }
+
+ items.push(max);
+
+ for (i = 0, ilen = items.length; i < ilen; ++i) {
+ next = items[i + 1];
+ prev = items[i - 1];
+ curr = items[i];
+
+ // only add points that breaks the scale linearity
+ if (prev === undefined || next === undefined || Math.round((next + prev) / 2) !== curr) {
+ table.push({time: curr, pos: i / (ilen - 1)});
+ }
+ }
+
+ return table;
+}
+
+// @see adapted from https://www.anujgakhar.com/2014/03/01/binary-search-in-javascript/
+function lookup(table, key, value) {
+ var lo = 0;
+ var hi = table.length - 1;
+ var mid, i0, i1;
+
+ while (lo >= 0 && lo <= hi) {
+ mid = (lo + hi) >> 1;
+ i0 = table[mid - 1] || null;
+ i1 = table[mid];
+
+ if (!i0) {
+ // given value is outside table (before first item)
+ return {lo: null, hi: i1};
+ } else if (i1[key] < value) {
+ lo = mid + 1;
+ } else if (i0[key] > value) {
+ hi = mid - 1;
+ } else {
+ return {lo: i0, hi: i1};
+ }
+ }
+
+ // given value is outside table (after last item)
+ return {lo: i1, hi: null};
+}
+
+/**
+ * Linearly interpolates the given source `value` using the table items `skey` values and
+ * returns the associated `tkey` value. For example, interpolate(table, 'time', 42, 'pos')
+ * returns the position for a timestamp equal to 42. If value is out of bounds, values at
+ * index [0, 1] or [n - 1, n] are used for the interpolation.
+ */
+function interpolate$1(table, skey, sval, tkey) {
+ var range = lookup(table, skey, sval);
+
+ // Note: the lookup table ALWAYS contains at least 2 items (min and max)
+ var prev = !range.lo ? table[0] : !range.hi ? table[table.length - 2] : range.lo;
+ var next = !range.lo ? table[1] : !range.hi ? table[table.length - 1] : range.hi;
+
+ var span = next[skey] - prev[skey];
+ var ratio = span ? (sval - prev[skey]) / span : 0;
+ var offset = (next[tkey] - prev[tkey]) * ratio;
+
+ return prev[tkey] + offset;
+}
+
+function toTimestamp(scale, input) {
+ var adapter = scale._adapter;
+ var options = scale.options.time;
+ var parser = options.parser;
+ var format = parser || options.format;
+ var value = input;
+
+ if (typeof parser === 'function') {
+ value = parser(value);
+ }
+
+ // Only parse if its not a timestamp already
+ if (!helpers$1.isFinite(value)) {
+ value = typeof format === 'string'
+ ? adapter.parse(value, format)
+ : adapter.parse(value);
+ }
+
+ if (value !== null) {
+ return +value;
+ }
+
+ // Labels are in an incompatible format and no `parser` has been provided.
+ // The user might still use the deprecated `format` option for parsing.
+ if (!parser && typeof format === 'function') {
+ value = format(input);
+
+ // `format` could return something else than a timestamp, if so, parse it
+ if (!helpers$1.isFinite(value)) {
+ value = adapter.parse(value);
+ }
+ }
+
+ return value;
+}
+
+function parse(scale, input) {
+ if (helpers$1.isNullOrUndef(input)) {
+ return null;
+ }
+
+ var options = scale.options.time;
+ var value = toTimestamp(scale, scale.getRightValue(input));
+ if (value === null) {
+ return value;
+ }
+
+ if (options.round) {
+ value = +scale._adapter.startOf(value, options.round);
+ }
+
+ return value;
+}
+
+/**
+ * Returns the number of unit to skip to be able to display up to `capacity` number of ticks
+ * in `unit` for the given `min` / `max` range and respecting the interval steps constraints.
+ */
+function determineStepSize(min, max, unit, capacity) {
+ var range = max - min;
+ var interval = INTERVALS[unit];
+ var milliseconds = interval.size;
+ var steps = interval.steps;
+ var i, ilen, factor;
+
+ if (!steps) {
+ return Math.ceil(range / (capacity * milliseconds));
+ }
+
+ for (i = 0, ilen = steps.length; i < ilen; ++i) {
+ factor = steps[i];
+ if (Math.ceil(range / (milliseconds * factor)) <= capacity) {
+ break;
+ }
+ }
+
+ return factor;
+}
+
+/**
+ * Figures out what unit results in an appropriate number of auto-generated ticks
+ */
+function determineUnitForAutoTicks(minUnit, min, max, capacity) {
+ var ilen = UNITS.length;
+ var i, interval, factor;
+
+ for (i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) {
+ interval = INTERVALS[UNITS[i]];
+ factor = interval.steps ? interval.steps[interval.steps.length - 1] : MAX_INTEGER;
+
+ if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) {
+ return UNITS[i];
+ }
+ }
+
+ return UNITS[ilen - 1];
+}
+
+/**
+ * Figures out what unit to format a set of ticks with
+ */
+function determineUnitForFormatting(scale, ticks, minUnit, min, max) {
+ var ilen = UNITS.length;
+ var i, unit;
+
+ for (i = ilen - 1; i >= UNITS.indexOf(minUnit); i--) {
+ unit = UNITS[i];
+ if (INTERVALS[unit].common && scale._adapter.diff(max, min, unit) >= ticks.length) {
+ return unit;
+ }
+ }
+
+ return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0];
+}
+
+function determineMajorUnit(unit) {
+ for (var i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) {
+ if (INTERVALS[UNITS[i]].common) {
+ return UNITS[i];
+ }
+ }
+}
+
+/**
+ * Generates a maximum of `capacity` timestamps between min and max, rounded to the
+ * `minor` unit, aligned on the `major` unit and using the given scale time `options`.
+ * Important: this method can return ticks outside the min and max range, it's the
+ * responsibility of the calling code to clamp values if needed.
+ */
+function generate(scale, min, max, capacity) {
+ var adapter = scale._adapter;
+ var options = scale.options;
+ var timeOpts = options.time;
+ var minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, capacity);
+ var major = determineMajorUnit(minor);
+ var stepSize = valueOrDefault$c(timeOpts.stepSize, timeOpts.unitStepSize);
+ var weekday = minor === 'week' ? timeOpts.isoWeekday : false;
+ var majorTicksEnabled = options.ticks.major.enabled;
+ var interval = INTERVALS[minor];
+ var first = min;
+ var last = max;
+ var ticks = [];
+ var time;
+
+ if (!stepSize) {
+ stepSize = determineStepSize(min, max, minor, capacity);
+ }
+
+ // For 'week' unit, handle the first day of week option
+ if (weekday) {
+ first = +adapter.startOf(first, 'isoWeek', weekday);
+ last = +adapter.startOf(last, 'isoWeek', weekday);
+ }
+
+ // Align first/last ticks on unit
+ first = +adapter.startOf(first, weekday ? 'day' : minor);
+ last = +adapter.startOf(last, weekday ? 'day' : minor);
+
+ // Make sure that the last tick include max
+ if (last < max) {
+ last = +adapter.add(last, 1, minor);
+ }
+
+ time = first;
+
+ if (majorTicksEnabled && major && !weekday && !timeOpts.round) {
+ // Align the first tick on the previous `minor` unit aligned on the `major` unit:
+ // we first aligned time on the previous `major` unit then add the number of full
+ // stepSize there is between first and the previous major time.
+ time = +adapter.startOf(time, major);
+ time = +adapter.add(time, ~~((first - time) / (interval.size * stepSize)) * stepSize, minor);
+ }
+
+ for (; time < last; time = +adapter.add(time, stepSize, minor)) {
+ ticks.push(+time);
+ }
+
+ ticks.push(+time);
+
+ return ticks;
+}
+
+/**
+ * Returns the start and end offsets from edges in the form of {start, end}
+ * where each value is a relative width to the scale and ranges between 0 and 1.
+ * They add extra margins on the both sides by scaling down the original scale.
+ * Offsets are added when the `offset` option is true.
+ */
+function computeOffsets(table, ticks, min, max, options) {
+ var start = 0;
+ var end = 0;
+ var first, last;
+
+ if (options.offset && ticks.length) {
+ if (!options.time.min) {
+ first = interpolate$1(table, 'time', ticks[0], 'pos');
+ if (ticks.length === 1) {
+ start = 1 - first;
+ } else {
+ start = (interpolate$1(table, 'time', ticks[1], 'pos') - first) / 2;
+ }
+ }
+ if (!options.time.max) {
+ last = interpolate$1(table, 'time', ticks[ticks.length - 1], 'pos');
+ if (ticks.length === 1) {
+ end = last;
+ } else {
+ end = (last - interpolate$1(table, 'time', ticks[ticks.length - 2], 'pos')) / 2;
+ }
+ }
+ }
+
+ return {start: start, end: end};
+}
+
+function ticksFromTimestamps(scale, values, majorUnit) {
+ var ticks = [];
+ var i, ilen, value, major;
+
+ for (i = 0, ilen = values.length; i < ilen; ++i) {
+ value = values[i];
+ major = majorUnit ? value === +scale._adapter.startOf(value, majorUnit) : false;
+
+ ticks.push({
+ value: value,
+ major: major
+ });
+ }
+
+ return ticks;
+}
+
+var defaultConfig$4 = {
+ position: 'bottom',
+
+ /**
+ * Data distribution along the scale:
+ * - 'linear': data are spread according to their time (distances can vary),
+ * - 'series': data are spread at the same distance from each other.
+ * @see https://github.com/chartjs/Chart.js/pull/4507
+ * @since 2.7.0
+ */
+ distribution: 'linear',
+
+ /**
+ * Scale boundary strategy (bypassed by min/max time options)
+ * - `data`: make sure data are fully visible, ticks outside are removed
+ * - `ticks`: make sure ticks are fully visible, data outside are truncated
+ * @see https://github.com/chartjs/Chart.js/pull/4556
+ * @since 2.7.0
+ */
+ bounds: 'data',
+
+ adapters: {},
+ time: {
+ parser: false, // false == a pattern string from https://momentjs.com/docs/#/parsing/string-format/ or a custom callback that converts its argument to a moment
+ format: false, // DEPRECATED false == date objects, moment object, callback or a pattern string from https://momentjs.com/docs/#/parsing/string-format/
+ unit: false, // false == automatic or override with week, month, year, etc.
+ round: false, // none, or override with week, month, year, etc.
+ displayFormat: false, // DEPRECATED
+ isoWeekday: false, // override week start day - see https://momentjs.com/docs/#/get-set/iso-weekday/
+ minUnit: 'millisecond',
+ displayFormats: {}
+ },
+ ticks: {
+ autoSkip: false,
+
+ /**
+ * Ticks generation input values:
+ * - 'auto': generates "optimal" ticks based on scale size and time options.
+ * - 'data': generates ticks from data (including labels from data {t|x|y} objects).
+ * - 'labels': generates ticks from user given `data.labels` values ONLY.
+ * @see https://github.com/chartjs/Chart.js/pull/4507
+ * @since 2.7.0
+ */
+ source: 'auto',
+
+ major: {
+ enabled: false
+ }
+ }
+};
+
+var scale_time = core_scale.extend({
+ initialize: function() {
+ this.mergeTicksOptions();
+ core_scale.prototype.initialize.call(this);
+ },
+
+ update: function() {
+ var me = this;
+ var options = me.options;
+ var time = options.time || (options.time = {});
+ var adapter = me._adapter = new core_adapters._date(options.adapters.date);
+
+ // DEPRECATIONS: output a message only one time per update
+ if (time.format) {
+ console.warn('options.time.format is deprecated and replaced by options.time.parser.');
+ }
+
+ // Backward compatibility: before introducing adapter, `displayFormats` was
+ // supposed to contain *all* unit/string pairs but this can't be resolved
+ // when loading the scale (adapters are loaded afterward), so let's populate
+ // missing formats on update
+ helpers$1.mergeIf(time.displayFormats, adapter.formats());
+
+ return core_scale.prototype.update.apply(me, arguments);
+ },
+
+ /**
+ * Allows data to be referenced via 't' attribute
+ */
+ getRightValue: function(rawValue) {
+ if (rawValue && rawValue.t !== undefined) {
+ rawValue = rawValue.t;
+ }
+ return core_scale.prototype.getRightValue.call(this, rawValue);
+ },
+
+ determineDataLimits: function() {
+ var me = this;
+ var chart = me.chart;
+ var adapter = me._adapter;
+ var timeOpts = me.options.time;
+ var unit = timeOpts.unit || 'day';
+ var min = MAX_INTEGER;
+ var max = MIN_INTEGER;
+ var timestamps = [];
+ var datasets = [];
+ var labels = [];
+ var i, j, ilen, jlen, data, timestamp;
+ var dataLabels = chart.data.labels || [];
+
+ // Convert labels to timestamps
+ for (i = 0, ilen = dataLabels.length; i < ilen; ++i) {
+ labels.push(parse(me, dataLabels[i]));
+ }
+
+ // Convert data to timestamps
+ for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
+ if (chart.isDatasetVisible(i)) {
+ data = chart.data.datasets[i].data;
+
+ // Let's consider that all data have the same format.
+ if (helpers$1.isObject(data[0])) {
+ datasets[i] = [];
+
+ for (j = 0, jlen = data.length; j < jlen; ++j) {
+ timestamp = parse(me, data[j]);
+ timestamps.push(timestamp);
+ datasets[i][j] = timestamp;
+ }
+ } else {
+ for (j = 0, jlen = labels.length; j < jlen; ++j) {
+ timestamps.push(labels[j]);
+ }
+ datasets[i] = labels.slice(0);
+ }
+ } else {
+ datasets[i] = [];
+ }
+ }
+
+ if (labels.length) {
+ // Sort labels **after** data have been converted
+ labels = arrayUnique(labels).sort(sorter);
+ min = Math.min(min, labels[0]);
+ max = Math.max(max, labels[labels.length - 1]);
+ }
+
+ if (timestamps.length) {
+ timestamps = arrayUnique(timestamps).sort(sorter);
+ min = Math.min(min, timestamps[0]);
+ max = Math.max(max, timestamps[timestamps.length - 1]);
+ }
+
+ min = parse(me, timeOpts.min) || min;
+ max = parse(me, timeOpts.max) || max;
+
+ // In case there is no valid min/max, set limits based on unit time option
+ min = min === MAX_INTEGER ? +adapter.startOf(Date.now(), unit) : min;
+ max = max === MIN_INTEGER ? +adapter.endOf(Date.now(), unit) + 1 : max;
+
+ // Make sure that max is strictly higher than min (required by the lookup table)
+ me.min = Math.min(min, max);
+ me.max = Math.max(min + 1, max);
+
+ // PRIVATE
+ me._horizontal = me.isHorizontal();
+ me._table = [];
+ me._timestamps = {
+ data: timestamps,
+ datasets: datasets,
+ labels: labels
+ };
+ },
+
+ buildTicks: function() {
+ var me = this;
+ var min = me.min;
+ var max = me.max;
+ var options = me.options;
+ var timeOpts = options.time;
+ var timestamps = [];
+ var ticks = [];
+ var i, ilen, timestamp;
+
+ switch (options.ticks.source) {
+ case 'data':
+ timestamps = me._timestamps.data;
+ break;
+ case 'labels':
+ timestamps = me._timestamps.labels;
+ break;
+ case 'auto':
+ default:
+ timestamps = generate(me, min, max, me.getLabelCapacity(min), options);
+ }
+
+ if (options.bounds === 'ticks' && timestamps.length) {
+ min = timestamps[0];
+ max = timestamps[timestamps.length - 1];
+ }
+
+ // Enforce limits with user min/max options
+ min = parse(me, timeOpts.min) || min;
+ max = parse(me, timeOpts.max) || max;
+
+ // Remove ticks outside the min/max range
+ for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
+ timestamp = timestamps[i];
+ if (timestamp >= min && timestamp <= max) {
+ ticks.push(timestamp);
+ }
+ }
+
+ me.min = min;
+ me.max = max;
+
+ // PRIVATE
+ me._unit = timeOpts.unit || determineUnitForFormatting(me, ticks, timeOpts.minUnit, me.min, me.max);
+ me._majorUnit = determineMajorUnit(me._unit);
+ me._table = buildLookupTable(me._timestamps.data, min, max, options.distribution);
+ me._offsets = computeOffsets(me._table, ticks, min, max, options);
+
+ if (options.ticks.reverse) {
+ ticks.reverse();
+ }
+
+ return ticksFromTimestamps(me, ticks, me._majorUnit);
+ },
+
+ getLabelForIndex: function(index, datasetIndex) {
+ var me = this;
+ var adapter = me._adapter;
+ var data = me.chart.data;
+ var timeOpts = me.options.time;
+ var label = data.labels && index < data.labels.length ? data.labels[index] : '';
+ var value = data.datasets[datasetIndex].data[index];
+
+ if (helpers$1.isObject(value)) {
+ label = me.getRightValue(value);
+ }
+ if (timeOpts.tooltipFormat) {
+ return adapter.format(toTimestamp(me, label), timeOpts.tooltipFormat);
+ }
+ if (typeof label === 'string') {
+ return label;
+ }
+ return adapter.format(toTimestamp(me, label), timeOpts.displayFormats.datetime);
+ },
+
+ /**
+ * Function to format an individual tick mark
+ * @private
+ */
+ tickFormatFunction: function(time, index, ticks, format) {
+ var me = this;
+ var adapter = me._adapter;
+ var options = me.options;
+ var formats = options.time.displayFormats;
+ var minorFormat = formats[me._unit];
+ var majorUnit = me._majorUnit;
+ var majorFormat = formats[majorUnit];
+ var majorTime = +adapter.startOf(time, majorUnit);
+ var majorTickOpts = options.ticks.major;
+ var major = majorTickOpts.enabled && majorUnit && majorFormat && time === majorTime;
+ var label = adapter.format(time, format ? format : major ? majorFormat : minorFormat);
+ var tickOpts = major ? majorTickOpts : options.ticks.minor;
+ var formatter = valueOrDefault$c(tickOpts.callback, tickOpts.userCallback);
+
+ return formatter ? formatter(label, index, ticks) : label;
+ },
+
+ convertTicksToLabels: function(ticks) {
+ var labels = [];
+ var i, ilen;
+
+ for (i = 0, ilen = ticks.length; i < ilen; ++i) {
+ labels.push(this.tickFormatFunction(ticks[i].value, i, ticks));
+ }
+
+ return labels;
+ },
+
+ /**
+ * @private
+ */
+ getPixelForOffset: function(time) {
+ var me = this;
+ var isReverse = me.options.ticks.reverse;
+ var size = me._horizontal ? me.width : me.height;
+ var start = me._horizontal ? isReverse ? me.right : me.left : isReverse ? me.bottom : me.top;
+ var pos = interpolate$1(me._table, 'time', time, 'pos');
+ var offset = size * (me._offsets.start + pos) / (me._offsets.start + 1 + me._offsets.end);
+
+ return isReverse ? start - offset : start + offset;
+ },
+
+ getPixelForValue: function(value, index, datasetIndex) {
+ var me = this;
+ var time = null;
+
+ if (index !== undefined && datasetIndex !== undefined) {
+ time = me._timestamps.datasets[datasetIndex][index];
+ }
+
+ if (time === null) {
+ time = parse(me, value);
+ }
+
+ if (time !== null) {
+ return me.getPixelForOffset(time);
+ }
+ },
+
+ getPixelForTick: function(index) {
+ var ticks = this.getTicks();
+ return index >= 0 && index < ticks.length ?
+ this.getPixelForOffset(ticks[index].value) :
+ null;
+ },
+
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var size = me._horizontal ? me.width : me.height;
+ var start = me._horizontal ? me.left : me.top;
+ var pos = (size ? (pixel - start) / size : 0) * (me._offsets.start + 1 + me._offsets.start) - me._offsets.end;
+ var time = interpolate$1(me._table, 'pos', pos, 'time');
+
+ // DEPRECATION, we should return time directly
+ return me._adapter._create(time);
+ },
+
+ /**
+ * Crude approximation of what the label width might be
+ * @private
+ */
+ getLabelWidth: function(label) {
+ var me = this;
+ var ticksOpts = me.options.ticks;
+ var tickLabelWidth = me.ctx.measureText(label).width;
+ var angle = helpers$1.toRadians(ticksOpts.maxRotation);
+ var cosRotation = Math.cos(angle);
+ var sinRotation = Math.sin(angle);
+ var tickFontSize = valueOrDefault$c(ticksOpts.fontSize, core_defaults.global.defaultFontSize);
+
+ return (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation);
+ },
+
+ /**
+ * @private
+ */
+ getLabelCapacity: function(exampleTime) {
+ var me = this;
+
+ // pick the longest format (milliseconds) for guestimation
+ var format = me.options.time.displayFormats.millisecond;
+ var exampleLabel = me.tickFormatFunction(exampleTime, 0, [], format);
+ var tickLabelWidth = me.getLabelWidth(exampleLabel);
+ var innerWidth = me.isHorizontal() ? me.width : me.height;
+ var capacity = Math.floor(innerWidth / tickLabelWidth);
+
+ return capacity > 0 ? capacity : 1;
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults$4 = defaultConfig$4;
+scale_time._defaults = _defaults$4;
+
+var scales = {
+ category: scale_category,
+ linear: scale_linear,
+ logarithmic: scale_logarithmic,
+ radialLinear: scale_radialLinear,
+ time: scale_time
+};
+
+var moment = createCommonjsModule(function (module, exports) {
+(function (global, factory) {
+ module.exports = factory();
+}(commonjsGlobal, (function () {
+ var hookCallback;
+
+ function hooks () {
+ return hookCallback.apply(null, arguments);
+ }
+
+ // This is done to register the method called with moment()
+ // without creating circular dependencies.
+ function setHookCallback (callback) {
+ hookCallback = callback;
+ }
+
+ function isArray(input) {
+ return input instanceof Array || Object.prototype.toString.call(input) === '[object Array]';
+ }
+
+ function isObject(input) {
+ // IE8 will treat undefined and null as object if it wasn't for
+ // input != null
+ return input != null && Object.prototype.toString.call(input) === '[object Object]';
+ }
+
+ function isObjectEmpty(obj) {
+ if (Object.getOwnPropertyNames) {
+ return (Object.getOwnPropertyNames(obj).length === 0);
+ } else {
+ var k;
+ for (k in obj) {
+ if (obj.hasOwnProperty(k)) {
+ return false;
+ }
+ }
+ return true;
+ }
+ }
+
+ function isUndefined(input) {
+ return input === void 0;
+ }
+
+ function isNumber(input) {
+ return typeof input === 'number' || Object.prototype.toString.call(input) === '[object Number]';
+ }
+
+ function isDate(input) {
+ return input instanceof Date || Object.prototype.toString.call(input) === '[object Date]';
+ }
+
+ function map(arr, fn) {
+ var res = [], i;
+ for (i = 0; i < arr.length; ++i) {
+ res.push(fn(arr[i], i));
+ }
+ return res;
+ }
+
+ function hasOwnProp(a, b) {
+ return Object.prototype.hasOwnProperty.call(a, b);
+ }
+
+ function extend(a, b) {
+ for (var i in b) {
+ if (hasOwnProp(b, i)) {
+ a[i] = b[i];
+ }
+ }
+
+ if (hasOwnProp(b, 'toString')) {
+ a.toString = b.toString;
+ }
+
+ if (hasOwnProp(b, 'valueOf')) {
+ a.valueOf = b.valueOf;
+ }
+
+ return a;
+ }
+
+ function createUTC (input, format, locale, strict) {
+ return createLocalOrUTC(input, format, locale, strict, true).utc();
+ }
+
+ function defaultParsingFlags() {
+ // We need to deep clone this object.
+ return {
+ empty : false,
+ unusedTokens : [],
+ unusedInput : [],
+ overflow : -2,
+ charsLeftOver : 0,
+ nullInput : false,
+ invalidMonth : null,
+ invalidFormat : false,
+ userInvalidated : false,
+ iso : false,
+ parsedDateParts : [],
+ meridiem : null,
+ rfc2822 : false,
+ weekdayMismatch : false
+ };
+ }
+
+ function getParsingFlags(m) {
+ if (m._pf == null) {
+ m._pf = defaultParsingFlags();
+ }
+ return m._pf;
+ }
+
+ var some;
+ if (Array.prototype.some) {
+ some = Array.prototype.some;
+ } else {
+ some = function (fun) {
+ var t = Object(this);
+ var len = t.length >>> 0;
+
+ for (var i = 0; i < len; i++) {
+ if (i in t && fun.call(this, t[i], i, t)) {
+ return true;
+ }
+ }
+
+ return false;
+ };
+ }
+
+ function isValid(m) {
+ if (m._isValid == null) {
+ var flags = getParsingFlags(m);
+ var parsedParts = some.call(flags.parsedDateParts, function (i) {
+ return i != null;
+ });
+ var isNowValid = !isNaN(m._d.getTime()) &&
+ flags.overflow < 0 &&
+ !flags.empty &&
+ !flags.invalidMonth &&
+ !flags.invalidWeekday &&
+ !flags.weekdayMismatch &&
+ !flags.nullInput &&
+ !flags.invalidFormat &&
+ !flags.userInvalidated &&
+ (!flags.meridiem || (flags.meridiem && parsedParts));
+
+ if (m._strict) {
+ isNowValid = isNowValid &&
+ flags.charsLeftOver === 0 &&
+ flags.unusedTokens.length === 0 &&
+ flags.bigHour === undefined;
+ }
+
+ if (Object.isFrozen == null || !Object.isFrozen(m)) {
+ m._isValid = isNowValid;
+ }
+ else {
+ return isNowValid;
+ }
+ }
+ return m._isValid;
+ }
+
+ function createInvalid (flags) {
+ var m = createUTC(NaN);
+ if (flags != null) {
+ extend(getParsingFlags(m), flags);
+ }
+ else {
+ getParsingFlags(m).userInvalidated = true;
+ }
+
+ return m;
+ }
+
+ // Plugins that add properties should also add the key here (null value),
+ // so we can properly clone ourselves.
+ var momentProperties = hooks.momentProperties = [];
+
+ function copyConfig(to, from) {
+ var i, prop, val;
+
+ if (!isUndefined(from._isAMomentObject)) {
+ to._isAMomentObject = from._isAMomentObject;
+ }
+ if (!isUndefined(from._i)) {
+ to._i = from._i;
+ }
+ if (!isUndefined(from._f)) {
+ to._f = from._f;
+ }
+ if (!isUndefined(from._l)) {
+ to._l = from._l;
+ }
+ if (!isUndefined(from._strict)) {
+ to._strict = from._strict;
+ }
+ if (!isUndefined(from._tzm)) {
+ to._tzm = from._tzm;
+ }
+ if (!isUndefined(from._isUTC)) {
+ to._isUTC = from._isUTC;
+ }
+ if (!isUndefined(from._offset)) {
+ to._offset = from._offset;
+ }
+ if (!isUndefined(from._pf)) {
+ to._pf = getParsingFlags(from);
+ }
+ if (!isUndefined(from._locale)) {
+ to._locale = from._locale;
+ }
+
+ if (momentProperties.length > 0) {
+ for (i = 0; i < momentProperties.length; i++) {
+ prop = momentProperties[i];
+ val = from[prop];
+ if (!isUndefined(val)) {
+ to[prop] = val;
+ }
+ }
+ }
+
+ return to;
+ }
+
+ var updateInProgress = false;
+
+ // Moment prototype object
+ function Moment(config) {
+ copyConfig(this, config);
+ this._d = new Date(config._d != null ? config._d.getTime() : NaN);
+ if (!this.isValid()) {
+ this._d = new Date(NaN);
+ }
+ // Prevent infinite loop in case updateOffset creates new moment
+ // objects.
+ if (updateInProgress === false) {
+ updateInProgress = true;
+ hooks.updateOffset(this);
+ updateInProgress = false;
+ }
+ }
+
+ function isMoment (obj) {
+ return obj instanceof Moment || (obj != null && obj._isAMomentObject != null);
+ }
+
+ function absFloor (number) {
+ if (number < 0) {
+ // -0 -> 0
+ return Math.ceil(number) || 0;
+ } else {
+ return Math.floor(number);
+ }
+ }
+
+ function toInt(argumentForCoercion) {
+ var coercedNumber = +argumentForCoercion,
+ value = 0;
+
+ if (coercedNumber !== 0 && isFinite(coercedNumber)) {
+ value = absFloor(coercedNumber);
+ }
+
+ return value;
+ }
+
+ // compare two arrays, return the number of differences
+ function compareArrays(array1, array2, dontConvert) {
+ var len = Math.min(array1.length, array2.length),
+ lengthDiff = Math.abs(array1.length - array2.length),
+ diffs = 0,
+ i;
+ for (i = 0; i < len; i++) {
+ if ((dontConvert && array1[i] !== array2[i]) ||
+ (!dontConvert && toInt(array1[i]) !== toInt(array2[i]))) {
+ diffs++;
+ }
+ }
+ return diffs + lengthDiff;
+ }
+
+ function warn(msg) {
+ if (hooks.suppressDeprecationWarnings === false &&
+ (typeof console !== 'undefined') && console.warn) {
+ console.warn('Deprecation warning: ' + msg);
+ }
+ }
+
+ function deprecate(msg, fn) {
+ var firstTime = true;
+
+ return extend(function () {
+ if (hooks.deprecationHandler != null) {
+ hooks.deprecationHandler(null, msg);
+ }
+ if (firstTime) {
+ var args = [];
+ var arg;
+ for (var i = 0; i < arguments.length; i++) {
+ arg = '';
+ if (typeof arguments[i] === 'object') {
+ arg += '\n[' + i + '] ';
+ for (var key in arguments[0]) {
+ arg += key + ': ' + arguments[0][key] + ', ';
+ }
+ arg = arg.slice(0, -2); // Remove trailing comma and space
+ } else {
+ arg = arguments[i];
+ }
+ args.push(arg);
+ }
+ warn(msg + '\nArguments: ' + Array.prototype.slice.call(args).join('') + '\n' + (new Error()).stack);
+ firstTime = false;
+ }
+ return fn.apply(this, arguments);
+ }, fn);
+ }
+
+ var deprecations = {};
+
+ function deprecateSimple(name, msg) {
+ if (hooks.deprecationHandler != null) {
+ hooks.deprecationHandler(name, msg);
+ }
+ if (!deprecations[name]) {
+ warn(msg);
+ deprecations[name] = true;
+ }
+ }
+
+ hooks.suppressDeprecationWarnings = false;
+ hooks.deprecationHandler = null;
+
+ function isFunction(input) {
+ return input instanceof Function || Object.prototype.toString.call(input) === '[object Function]';
+ }
+
+ function set (config) {
+ var prop, i;
+ for (i in config) {
+ prop = config[i];
+ if (isFunction(prop)) {
+ this[i] = prop;
+ } else {
+ this['_' + i] = prop;
+ }
+ }
+ this._config = config;
+ // Lenient ordinal parsing accepts just a number in addition to
+ // number + (possibly) stuff coming from _dayOfMonthOrdinalParse.
+ // TODO: Remove "ordinalParse" fallback in next major release.
+ this._dayOfMonthOrdinalParseLenient = new RegExp(
+ (this._dayOfMonthOrdinalParse.source || this._ordinalParse.source) +
+ '|' + (/\d{1,2}/).source);
+ }
+
+ function mergeConfigs(parentConfig, childConfig) {
+ var res = extend({}, parentConfig), prop;
+ for (prop in childConfig) {
+ if (hasOwnProp(childConfig, prop)) {
+ if (isObject(parentConfig[prop]) && isObject(childConfig[prop])) {
+ res[prop] = {};
+ extend(res[prop], parentConfig[prop]);
+ extend(res[prop], childConfig[prop]);
+ } else if (childConfig[prop] != null) {
+ res[prop] = childConfig[prop];
+ } else {
+ delete res[prop];
+ }
+ }
+ }
+ for (prop in parentConfig) {
+ if (hasOwnProp(parentConfig, prop) &&
+ !hasOwnProp(childConfig, prop) &&
+ isObject(parentConfig[prop])) {
+ // make sure changes to properties don't modify parent config
+ res[prop] = extend({}, res[prop]);
+ }
+ }
+ return res;
+ }
+
+ function Locale(config) {
+ if (config != null) {
+ this.set(config);
+ }
+ }
+
+ var keys;
+
+ if (Object.keys) {
+ keys = Object.keys;
+ } else {
+ keys = function (obj) {
+ var i, res = [];
+ for (i in obj) {
+ if (hasOwnProp(obj, i)) {
+ res.push(i);
+ }
+ }
+ return res;
+ };
+ }
+
+ var defaultCalendar = {
+ sameDay : '[Today at] LT',
+ nextDay : '[Tomorrow at] LT',
+ nextWeek : 'dddd [at] LT',
+ lastDay : '[Yesterday at] LT',
+ lastWeek : '[Last] dddd [at] LT',
+ sameElse : 'L'
+ };
+
+ function calendar (key, mom, now) {
+ var output = this._calendar[key] || this._calendar['sameElse'];
+ return isFunction(output) ? output.call(mom, now) : output;
+ }
+
+ var defaultLongDateFormat = {
+ LTS : 'h:mm:ss A',
+ LT : 'h:mm A',
+ L : 'MM/DD/YYYY',
+ LL : 'MMMM D, YYYY',
+ LLL : 'MMMM D, YYYY h:mm A',
+ LLLL : 'dddd, MMMM D, YYYY h:mm A'
+ };
+
+ function longDateFormat (key) {
+ var format = this._longDateFormat[key],
+ formatUpper = this._longDateFormat[key.toUpperCase()];
+
+ if (format || !formatUpper) {
+ return format;
+ }
+
+ this._longDateFormat[key] = formatUpper.replace(/MMMM|MM|DD|dddd/g, function (val) {
+ return val.slice(1);
+ });
+
+ return this._longDateFormat[key];
+ }
+
+ var defaultInvalidDate = 'Invalid date';
+
+ function invalidDate () {
+ return this._invalidDate;
+ }
+
+ var defaultOrdinal = '%d';
+ var defaultDayOfMonthOrdinalParse = /\d{1,2}/;
+
+ function ordinal (number) {
+ return this._ordinal.replace('%d', number);
+ }
+
+ var defaultRelativeTime = {
+ future : 'in %s',
+ past : '%s ago',
+ s : 'a few seconds',
+ ss : '%d seconds',
+ m : 'a minute',
+ mm : '%d minutes',
+ h : 'an hour',
+ hh : '%d hours',
+ d : 'a day',
+ dd : '%d days',
+ M : 'a month',
+ MM : '%d months',
+ y : 'a year',
+ yy : '%d years'
+ };
+
+ function relativeTime (number, withoutSuffix, string, isFuture) {
+ var output = this._relativeTime[string];
+ return (isFunction(output)) ?
+ output(number, withoutSuffix, string, isFuture) :
+ output.replace(/%d/i, number);
+ }
+
+ function pastFuture (diff, output) {
+ var format = this._relativeTime[diff > 0 ? 'future' : 'past'];
+ return isFunction(format) ? format(output) : format.replace(/%s/i, output);
+ }
+
+ var aliases = {};
+
+ function addUnitAlias (unit, shorthand) {
+ var lowerCase = unit.toLowerCase();
+ aliases[lowerCase] = aliases[lowerCase + 's'] = aliases[shorthand] = unit;
+ }
+
+ function normalizeUnits(units) {
+ return typeof units === 'string' ? aliases[units] || aliases[units.toLowerCase()] : undefined;
+ }
+
+ function normalizeObjectUnits(inputObject) {
+ var normalizedInput = {},
+ normalizedProp,
+ prop;
+
+ for (prop in inputObject) {
+ if (hasOwnProp(inputObject, prop)) {
+ normalizedProp = normalizeUnits(prop);
+ if (normalizedProp) {
+ normalizedInput[normalizedProp] = inputObject[prop];
+ }
+ }
+ }
+
+ return normalizedInput;
+ }
+
+ var priorities = {};
+
+ function addUnitPriority(unit, priority) {
+ priorities[unit] = priority;
+ }
+
+ function getPrioritizedUnits(unitsObj) {
+ var units = [];
+ for (var u in unitsObj) {
+ units.push({unit: u, priority: priorities[u]});
+ }
+ units.sort(function (a, b) {
+ return a.priority - b.priority;
+ });
+ return units;
+ }
+
+ function zeroFill(number, targetLength, forceSign) {
+ var absNumber = '' + Math.abs(number),
+ zerosToFill = targetLength - absNumber.length,
+ sign = number >= 0;
+ return (sign ? (forceSign ? '+' : '') : '-') +
+ Math.pow(10, Math.max(0, zerosToFill)).toString().substr(1) + absNumber;
+ }
+
+ var formattingTokens = /(\[[^\[]*\])|(\\)?([Hh]mm(ss)?|Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w[o|w]?|W[o|W]?|Qo?|YYYYYY|YYYYY|YYYY|YY|gg(ggg?)?|GG(GGG?)?|e|E|a|A|hh?|HH?|kk?|mm?|ss?|S{1,9}|x|X|zz?|ZZ?|.)/g;
+
+ var localFormattingTokens = /(\[[^\[]*\])|(\\)?(LTS|LT|LL?L?L?|l{1,4})/g;
+
+ var formatFunctions = {};
+
+ var formatTokenFunctions = {};
+
+ // token: 'M'
+ // padded: ['MM', 2]
+ // ordinal: 'Mo'
+ // callback: function () { this.month() + 1 }
+ function addFormatToken (token, padded, ordinal, callback) {
+ var func = callback;
+ if (typeof callback === 'string') {
+ func = function () {
+ return this[callback]();
+ };
+ }
+ if (token) {
+ formatTokenFunctions[token] = func;
+ }
+ if (padded) {
+ formatTokenFunctions[padded[0]] = function () {
+ return zeroFill(func.apply(this, arguments), padded[1], padded[2]);
+ };
+ }
+ if (ordinal) {
+ formatTokenFunctions[ordinal] = function () {
+ return this.localeData().ordinal(func.apply(this, arguments), token);
+ };
+ }
+ }
+
+ function removeFormattingTokens(input) {
+ if (input.match(/\[[\s\S]/)) {
+ return input.replace(/^\[|\]$/g, '');
+ }
+ return input.replace(/\\/g, '');
+ }
+
+ function makeFormatFunction(format) {
+ var array = format.match(formattingTokens), i, length;
+
+ for (i = 0, length = array.length; i < length; i++) {
+ if (formatTokenFunctions[array[i]]) {
+ array[i] = formatTokenFunctions[array[i]];
+ } else {
+ array[i] = removeFormattingTokens(array[i]);
+ }
+ }
+
+ return function (mom) {
+ var output = '', i;
+ for (i = 0; i < length; i++) {
+ output += isFunction(array[i]) ? array[i].call(mom, format) : array[i];
+ }
+ return output;
+ };
+ }
+
+ // format date using native date object
+ function formatMoment(m, format) {
+ if (!m.isValid()) {
+ return m.localeData().invalidDate();
+ }
+
+ format = expandFormat(format, m.localeData());
+ formatFunctions[format] = formatFunctions[format] || makeFormatFunction(format);
+
+ return formatFunctions[format](m);
+ }
+
+ function expandFormat(format, locale) {
+ var i = 5;
+
+ function replaceLongDateFormatTokens(input) {
+ return locale.longDateFormat(input) || input;
+ }
+
+ localFormattingTokens.lastIndex = 0;
+ while (i >= 0 && localFormattingTokens.test(format)) {
+ format = format.replace(localFormattingTokens, replaceLongDateFormatTokens);
+ localFormattingTokens.lastIndex = 0;
+ i -= 1;
+ }
+
+ return format;
+ }
+
+ var match1 = /\d/; // 0 - 9
+ var match2 = /\d\d/; // 00 - 99
+ var match3 = /\d{3}/; // 000 - 999
+ var match4 = /\d{4}/; // 0000 - 9999
+ var match6 = /[+-]?\d{6}/; // -999999 - 999999
+ var match1to2 = /\d\d?/; // 0 - 99
+ var match3to4 = /\d\d\d\d?/; // 999 - 9999
+ var match5to6 = /\d\d\d\d\d\d?/; // 99999 - 999999
+ var match1to3 = /\d{1,3}/; // 0 - 999
+ var match1to4 = /\d{1,4}/; // 0 - 9999
+ var match1to6 = /[+-]?\d{1,6}/; // -999999 - 999999
+
+ var matchUnsigned = /\d+/; // 0 - inf
+ var matchSigned = /[+-]?\d+/; // -inf - inf
+
+ var matchOffset = /Z|[+-]\d\d:?\d\d/gi; // +00:00 -00:00 +0000 -0000 or Z
+ var matchShortOffset = /Z|[+-]\d\d(?::?\d\d)?/gi; // +00 -00 +00:00 -00:00 +0000 -0000 or Z
+
+ var matchTimestamp = /[+-]?\d+(\.\d{1,3})?/; // 123456789 123456789.123
+
+ // any word (or two) characters or numbers including two/three word month in arabic.
+ // includes scottish gaelic two word and hyphenated months
+ var matchWord = /[0-9]{0,256}['a-z\u00A0-\u05FF\u0700-\uD7FF\uF900-\uFDCF\uFDF0-\uFF07\uFF10-\uFFEF]{1,256}|[\u0600-\u06FF\/]{1,256}(\s*?[\u0600-\u06FF]{1,256}){1,2}/i;
+
+ var regexes = {};
+
+ function addRegexToken (token, regex, strictRegex) {
+ regexes[token] = isFunction(regex) ? regex : function (isStrict, localeData) {
+ return (isStrict && strictRegex) ? strictRegex : regex;
+ };
+ }
+
+ function getParseRegexForToken (token, config) {
+ if (!hasOwnProp(regexes, token)) {
+ return new RegExp(unescapeFormat(token));
+ }
+
+ return regexes[token](config._strict, config._locale);
+ }
+
+ // Code from http://stackoverflow.com/questions/3561493/is-there-a-regexp-escape-function-in-javascript
+ function unescapeFormat(s) {
+ return regexEscape(s.replace('\\', '').replace(/\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g, function (matched, p1, p2, p3, p4) {
+ return p1 || p2 || p3 || p4;
+ }));
+ }
+
+ function regexEscape(s) {
+ return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
+ }
+
+ var tokens = {};
+
+ function addParseToken (token, callback) {
+ var i, func = callback;
+ if (typeof token === 'string') {
+ token = [token];
+ }
+ if (isNumber(callback)) {
+ func = function (input, array) {
+ array[callback] = toInt(input);
+ };
+ }
+ for (i = 0; i < token.length; i++) {
+ tokens[token[i]] = func;
+ }
+ }
+
+ function addWeekParseToken (token, callback) {
+ addParseToken(token, function (input, array, config, token) {
+ config._w = config._w || {};
+ callback(input, config._w, config, token);
+ });
+ }
+
+ function addTimeToArrayFromToken(token, input, config) {
+ if (input != null && hasOwnProp(tokens, token)) {
+ tokens[token](input, config._a, config, token);
+ }
+ }
+
+ var YEAR = 0;
+ var MONTH = 1;
+ var DATE = 2;
+ var HOUR = 3;
+ var MINUTE = 4;
+ var SECOND = 5;
+ var MILLISECOND = 6;
+ var WEEK = 7;
+ var WEEKDAY = 8;
+
+ // FORMATTING
+
+ addFormatToken('Y', 0, 0, function () {
+ var y = this.year();
+ return y <= 9999 ? '' + y : '+' + y;
+ });
+
+ addFormatToken(0, ['YY', 2], 0, function () {
+ return this.year() % 100;
+ });
+
+ addFormatToken(0, ['YYYY', 4], 0, 'year');
+ addFormatToken(0, ['YYYYY', 5], 0, 'year');
+ addFormatToken(0, ['YYYYYY', 6, true], 0, 'year');
+
+ // ALIASES
+
+ addUnitAlias('year', 'y');
+
+ // PRIORITIES
+
+ addUnitPriority('year', 1);
+
+ // PARSING
+
+ addRegexToken('Y', matchSigned);
+ addRegexToken('YY', match1to2, match2);
+ addRegexToken('YYYY', match1to4, match4);
+ addRegexToken('YYYYY', match1to6, match6);
+ addRegexToken('YYYYYY', match1to6, match6);
+
+ addParseToken(['YYYYY', 'YYYYYY'], YEAR);
+ addParseToken('YYYY', function (input, array) {
+ array[YEAR] = input.length === 2 ? hooks.parseTwoDigitYear(input) : toInt(input);
+ });
+ addParseToken('YY', function (input, array) {
+ array[YEAR] = hooks.parseTwoDigitYear(input);
+ });
+ addParseToken('Y', function (input, array) {
+ array[YEAR] = parseInt(input, 10);
+ });
+
+ // HELPERS
+
+ function daysInYear(year) {
+ return isLeapYear(year) ? 366 : 365;
+ }
+
+ function isLeapYear(year) {
+ return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
+ }
+
+ // HOOKS
+
+ hooks.parseTwoDigitYear = function (input) {
+ return toInt(input) + (toInt(input) > 68 ? 1900 : 2000);
+ };
+
+ // MOMENTS
+
+ var getSetYear = makeGetSet('FullYear', true);
+
+ function getIsLeapYear () {
+ return isLeapYear(this.year());
+ }
+
+ function makeGetSet (unit, keepTime) {
+ return function (value) {
+ if (value != null) {
+ set$1(this, unit, value);
+ hooks.updateOffset(this, keepTime);
+ return this;
+ } else {
+ return get(this, unit);
+ }
+ };
+ }
+
+ function get (mom, unit) {
+ return mom.isValid() ?
+ mom._d['get' + (mom._isUTC ? 'UTC' : '') + unit]() : NaN;
+ }
+
+ function set$1 (mom, unit, value) {
+ if (mom.isValid() && !isNaN(value)) {
+ if (unit === 'FullYear' && isLeapYear(mom.year()) && mom.month() === 1 && mom.date() === 29) {
+ mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value, mom.month(), daysInMonth(value, mom.month()));
+ }
+ else {
+ mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value);
+ }
+ }
+ }
+
+ // MOMENTS
+
+ function stringGet (units) {
+ units = normalizeUnits(units);
+ if (isFunction(this[units])) {
+ return this[units]();
+ }
+ return this;
+ }
+
+
+ function stringSet (units, value) {
+ if (typeof units === 'object') {
+ units = normalizeObjectUnits(units);
+ var prioritized = getPrioritizedUnits(units);
+ for (var i = 0; i < prioritized.length; i++) {
+ this[prioritized[i].unit](units[prioritized[i].unit]);
+ }
+ } else {
+ units = normalizeUnits(units);
+ if (isFunction(this[units])) {
+ return this[units](value);
+ }
+ }
+ return this;
+ }
+
+ function mod(n, x) {
+ return ((n % x) + x) % x;
+ }
+
+ var indexOf;
+
+ if (Array.prototype.indexOf) {
+ indexOf = Array.prototype.indexOf;
+ } else {
+ indexOf = function (o) {
+ // I know
+ var i;
+ for (i = 0; i < this.length; ++i) {
+ if (this[i] === o) {
+ return i;
+ }
+ }
+ return -1;
+ };
+ }
+
+ function daysInMonth(year, month) {
+ if (isNaN(year) || isNaN(month)) {
+ return NaN;
+ }
+ var modMonth = mod(month, 12);
+ year += (month - modMonth) / 12;
+ return modMonth === 1 ? (isLeapYear(year) ? 29 : 28) : (31 - modMonth % 7 % 2);
+ }
+
+ // FORMATTING
+
+ addFormatToken('M', ['MM', 2], 'Mo', function () {
+ return this.month() + 1;
+ });
+
+ addFormatToken('MMM', 0, 0, function (format) {
+ return this.localeData().monthsShort(this, format);
+ });
+
+ addFormatToken('MMMM', 0, 0, function (format) {
+ return this.localeData().months(this, format);
+ });
+
+ // ALIASES
+
+ addUnitAlias('month', 'M');
+
+ // PRIORITY
+
+ addUnitPriority('month', 8);
+
+ // PARSING
+
+ addRegexToken('M', match1to2);
+ addRegexToken('MM', match1to2, match2);
+ addRegexToken('MMM', function (isStrict, locale) {
+ return locale.monthsShortRegex(isStrict);
+ });
+ addRegexToken('MMMM', function (isStrict, locale) {
+ return locale.monthsRegex(isStrict);
+ });
+
+ addParseToken(['M', 'MM'], function (input, array) {
+ array[MONTH] = toInt(input) - 1;
+ });
+
+ addParseToken(['MMM', 'MMMM'], function (input, array, config, token) {
+ var month = config._locale.monthsParse(input, token, config._strict);
+ // if we didn't find a month name, mark the date as invalid.
+ if (month != null) {
+ array[MONTH] = month;
+ } else {
+ getParsingFlags(config).invalidMonth = input;
+ }
+ });
+
+ // LOCALES
+
+ var MONTHS_IN_FORMAT = /D[oD]?(\[[^\[\]]*\]|\s)+MMMM?/;
+ var defaultLocaleMonths = 'January_February_March_April_May_June_July_August_September_October_November_December'.split('_');
+ function localeMonths (m, format) {
+ if (!m) {
+ return isArray(this._months) ? this._months :
+ this._months['standalone'];
+ }
+ return isArray(this._months) ? this._months[m.month()] :
+ this._months[(this._months.isFormat || MONTHS_IN_FORMAT).test(format) ? 'format' : 'standalone'][m.month()];
+ }
+
+ var defaultLocaleMonthsShort = 'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split('_');
+ function localeMonthsShort (m, format) {
+ if (!m) {
+ return isArray(this._monthsShort) ? this._monthsShort :
+ this._monthsShort['standalone'];
+ }
+ return isArray(this._monthsShort) ? this._monthsShort[m.month()] :
+ this._monthsShort[MONTHS_IN_FORMAT.test(format) ? 'format' : 'standalone'][m.month()];
+ }
+
+ function handleStrictParse(monthName, format, strict) {
+ var i, ii, mom, llc = monthName.toLocaleLowerCase();
+ if (!this._monthsParse) {
+ // this is not used
+ this._monthsParse = [];
+ this._longMonthsParse = [];
+ this._shortMonthsParse = [];
+ for (i = 0; i < 12; ++i) {
+ mom = createUTC([2000, i]);
+ this._shortMonthsParse[i] = this.monthsShort(mom, '').toLocaleLowerCase();
+ this._longMonthsParse[i] = this.months(mom, '').toLocaleLowerCase();
+ }
+ }
+
+ if (strict) {
+ if (format === 'MMM') {
+ ii = indexOf.call(this._shortMonthsParse, llc);
+ return ii !== -1 ? ii : null;
+ } else {
+ ii = indexOf.call(this._longMonthsParse, llc);
+ return ii !== -1 ? ii : null;
+ }
+ } else {
+ if (format === 'MMM') {
+ ii = indexOf.call(this._shortMonthsParse, llc);
+ if (ii !== -1) {
+ return ii;
+ }
+ ii = indexOf.call(this._longMonthsParse, llc);
+ return ii !== -1 ? ii : null;
+ } else {
+ ii = indexOf.call(this._longMonthsParse, llc);
+ if (ii !== -1) {
+ return ii;
+ }
+ ii = indexOf.call(this._shortMonthsParse, llc);
+ return ii !== -1 ? ii : null;
+ }
+ }
+ }
+
+ function localeMonthsParse (monthName, format, strict) {
+ var i, mom, regex;
+
+ if (this._monthsParseExact) {
+ return handleStrictParse.call(this, monthName, format, strict);
+ }
+
+ if (!this._monthsParse) {
+ this._monthsParse = [];
+ this._longMonthsParse = [];
+ this._shortMonthsParse = [];
+ }
+
+ // TODO: add sorting
+ // Sorting makes sure if one month (or abbr) is a prefix of another
+ // see sorting in computeMonthsParse
+ for (i = 0; i < 12; i++) {
+ // make the regex if we don't have it already
+ mom = createUTC([2000, i]);
+ if (strict && !this._longMonthsParse[i]) {
+ this._longMonthsParse[i] = new RegExp('^' + this.months(mom, '').replace('.', '') + '$', 'i');
+ this._shortMonthsParse[i] = new RegExp('^' + this.monthsShort(mom, '').replace('.', '') + '$', 'i');
+ }
+ if (!strict && !this._monthsParse[i]) {
+ regex = '^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
+ this._monthsParse[i] = new RegExp(regex.replace('.', ''), 'i');
+ }
+ // test the regex
+ if (strict && format === 'MMMM' && this._longMonthsParse[i].test(monthName)) {
+ return i;
+ } else if (strict && format === 'MMM' && this._shortMonthsParse[i].test(monthName)) {
+ return i;
+ } else if (!strict && this._monthsParse[i].test(monthName)) {
+ return i;
+ }
+ }
+ }
+
+ // MOMENTS
+
+ function setMonth (mom, value) {
+ var dayOfMonth;
+
+ if (!mom.isValid()) {
+ // No op
+ return mom;
+ }
+
+ if (typeof value === 'string') {
+ if (/^\d+$/.test(value)) {
+ value = toInt(value);
+ } else {
+ value = mom.localeData().monthsParse(value);
+ // TODO: Another silent failure?
+ if (!isNumber(value)) {
+ return mom;
+ }
+ }
+ }
+
+ dayOfMonth = Math.min(mom.date(), daysInMonth(mom.year(), value));
+ mom._d['set' + (mom._isUTC ? 'UTC' : '') + 'Month'](value, dayOfMonth);
+ return mom;
+ }
+
+ function getSetMonth (value) {
+ if (value != null) {
+ setMonth(this, value);
+ hooks.updateOffset(this, true);
+ return this;
+ } else {
+ return get(this, 'Month');
+ }
+ }
+
+ function getDaysInMonth () {
+ return daysInMonth(this.year(), this.month());
+ }
+
+ var defaultMonthsShortRegex = matchWord;
+ function monthsShortRegex (isStrict) {
+ if (this._monthsParseExact) {
+ if (!hasOwnProp(this, '_monthsRegex')) {
+ computeMonthsParse.call(this);
+ }
+ if (isStrict) {
+ return this._monthsShortStrictRegex;
+ } else {
+ return this._monthsShortRegex;
+ }
+ } else {
+ if (!hasOwnProp(this, '_monthsShortRegex')) {
+ this._monthsShortRegex = defaultMonthsShortRegex;
+ }
+ return this._monthsShortStrictRegex && isStrict ?
+ this._monthsShortStrictRegex : this._monthsShortRegex;
+ }
+ }
+
+ var defaultMonthsRegex = matchWord;
+ function monthsRegex (isStrict) {
+ if (this._monthsParseExact) {
+ if (!hasOwnProp(this, '_monthsRegex')) {
+ computeMonthsParse.call(this);
+ }
+ if (isStrict) {
+ return this._monthsStrictRegex;
+ } else {
+ return this._monthsRegex;
+ }
+ } else {
+ if (!hasOwnProp(this, '_monthsRegex')) {
+ this._monthsRegex = defaultMonthsRegex;
+ }
+ return this._monthsStrictRegex && isStrict ?
+ this._monthsStrictRegex : this._monthsRegex;
+ }
+ }
+
+ function computeMonthsParse () {
+ function cmpLenRev(a, b) {
+ return b.length - a.length;
+ }
+
+ var shortPieces = [], longPieces = [], mixedPieces = [],
+ i, mom;
+ for (i = 0; i < 12; i++) {
+ // make the regex if we don't have it already
+ mom = createUTC([2000, i]);
+ shortPieces.push(this.monthsShort(mom, ''));
+ longPieces.push(this.months(mom, ''));
+ mixedPieces.push(this.months(mom, ''));
+ mixedPieces.push(this.monthsShort(mom, ''));
+ }
+ // Sorting makes sure if one month (or abbr) is a prefix of another it
+ // will match the longer piece.
+ shortPieces.sort(cmpLenRev);
+ longPieces.sort(cmpLenRev);
+ mixedPieces.sort(cmpLenRev);
+ for (i = 0; i < 12; i++) {
+ shortPieces[i] = regexEscape(shortPieces[i]);
+ longPieces[i] = regexEscape(longPieces[i]);
+ }
+ for (i = 0; i < 24; i++) {
+ mixedPieces[i] = regexEscape(mixedPieces[i]);
+ }
+
+ this._monthsRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
+ this._monthsShortRegex = this._monthsRegex;
+ this._monthsStrictRegex = new RegExp('^(' + longPieces.join('|') + ')', 'i');
+ this._monthsShortStrictRegex = new RegExp('^(' + shortPieces.join('|') + ')', 'i');
+ }
+
+ function createDate (y, m, d, h, M, s, ms) {
+ // can't just apply() to create a date:
+ // https://stackoverflow.com/q/181348
+ var date;
+ // the date constructor remaps years 0-99 to 1900-1999
+ if (y < 100 && y >= 0) {
+ // preserve leap years using a full 400 year cycle, then reset
+ date = new Date(y + 400, m, d, h, M, s, ms);
+ if (isFinite(date.getFullYear())) {
+ date.setFullYear(y);
+ }
+ } else {
+ date = new Date(y, m, d, h, M, s, ms);
+ }
+
+ return date;
+ }
+
+ function createUTCDate (y) {
+ var date;
+ // the Date.UTC function remaps years 0-99 to 1900-1999
+ if (y < 100 && y >= 0) {
+ var args = Array.prototype.slice.call(arguments);
+ // preserve leap years using a full 400 year cycle, then reset
+ args[0] = y + 400;
+ date = new Date(Date.UTC.apply(null, args));
+ if (isFinite(date.getUTCFullYear())) {
+ date.setUTCFullYear(y);
+ }
+ } else {
+ date = new Date(Date.UTC.apply(null, arguments));
+ }
+
+ return date;
+ }
+
+ // start-of-first-week - start-of-year
+ function firstWeekOffset(year, dow, doy) {
+ var // first-week day -- which january is always in the first week (4 for iso, 1 for other)
+ fwd = 7 + dow - doy,
+ // first-week day local weekday -- which local weekday is fwd
+ fwdlw = (7 + createUTCDate(year, 0, fwd).getUTCDay() - dow) % 7;
+
+ return -fwdlw + fwd - 1;
+ }
+
+ // https://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
+ function dayOfYearFromWeeks(year, week, weekday, dow, doy) {
+ var localWeekday = (7 + weekday - dow) % 7,
+ weekOffset = firstWeekOffset(year, dow, doy),
+ dayOfYear = 1 + 7 * (week - 1) + localWeekday + weekOffset,
+ resYear, resDayOfYear;
+
+ if (dayOfYear <= 0) {
+ resYear = year - 1;
+ resDayOfYear = daysInYear(resYear) + dayOfYear;
+ } else if (dayOfYear > daysInYear(year)) {
+ resYear = year + 1;
+ resDayOfYear = dayOfYear - daysInYear(year);
+ } else {
+ resYear = year;
+ resDayOfYear = dayOfYear;
+ }
+
+ return {
+ year: resYear,
+ dayOfYear: resDayOfYear
+ };
+ }
+
+ function weekOfYear(mom, dow, doy) {
+ var weekOffset = firstWeekOffset(mom.year(), dow, doy),
+ week = Math.floor((mom.dayOfYear() - weekOffset - 1) / 7) + 1,
+ resWeek, resYear;
+
+ if (week < 1) {
+ resYear = mom.year() - 1;
+ resWeek = week + weeksInYear(resYear, dow, doy);
+ } else if (week > weeksInYear(mom.year(), dow, doy)) {
+ resWeek = week - weeksInYear(mom.year(), dow, doy);
+ resYear = mom.year() + 1;
+ } else {
+ resYear = mom.year();
+ resWeek = week;
+ }
+
+ return {
+ week: resWeek,
+ year: resYear
+ };
+ }
+
+ function weeksInYear(year, dow, doy) {
+ var weekOffset = firstWeekOffset(year, dow, doy),
+ weekOffsetNext = firstWeekOffset(year + 1, dow, doy);
+ return (daysInYear(year) - weekOffset + weekOffsetNext) / 7;
+ }
+
+ // FORMATTING
+
+ addFormatToken('w', ['ww', 2], 'wo', 'week');
+ addFormatToken('W', ['WW', 2], 'Wo', 'isoWeek');
+
+ // ALIASES
+
+ addUnitAlias('week', 'w');
+ addUnitAlias('isoWeek', 'W');
+
+ // PRIORITIES
+
+ addUnitPriority('week', 5);
+ addUnitPriority('isoWeek', 5);
+
+ // PARSING
+
+ addRegexToken('w', match1to2);
+ addRegexToken('ww', match1to2, match2);
+ addRegexToken('W', match1to2);
+ addRegexToken('WW', match1to2, match2);
+
+ addWeekParseToken(['w', 'ww', 'W', 'WW'], function (input, week, config, token) {
+ week[token.substr(0, 1)] = toInt(input);
+ });
+
+ // HELPERS
+
+ // LOCALES
+
+ function localeWeek (mom) {
+ return weekOfYear(mom, this._week.dow, this._week.doy).week;
+ }
+
+ var defaultLocaleWeek = {
+ dow : 0, // Sunday is the first day of the week.
+ doy : 6 // The week that contains Jan 6th is the first week of the year.
+ };
+
+ function localeFirstDayOfWeek () {
+ return this._week.dow;
+ }
+
+ function localeFirstDayOfYear () {
+ return this._week.doy;
+ }
+
+ // MOMENTS
+
+ function getSetWeek (input) {
+ var week = this.localeData().week(this);
+ return input == null ? week : this.add((input - week) * 7, 'd');
+ }
+
+ function getSetISOWeek (input) {
+ var week = weekOfYear(this, 1, 4).week;
+ return input == null ? week : this.add((input - week) * 7, 'd');
+ }
+
+ // FORMATTING
+
+ addFormatToken('d', 0, 'do', 'day');
+
+ addFormatToken('dd', 0, 0, function (format) {
+ return this.localeData().weekdaysMin(this, format);
+ });
+
+ addFormatToken('ddd', 0, 0, function (format) {
+ return this.localeData().weekdaysShort(this, format);
+ });
+
+ addFormatToken('dddd', 0, 0, function (format) {
+ return this.localeData().weekdays(this, format);
+ });
+
+ addFormatToken('e', 0, 0, 'weekday');
+ addFormatToken('E', 0, 0, 'isoWeekday');
+
+ // ALIASES
+
+ addUnitAlias('day', 'd');
+ addUnitAlias('weekday', 'e');
+ addUnitAlias('isoWeekday', 'E');
+
+ // PRIORITY
+ addUnitPriority('day', 11);
+ addUnitPriority('weekday', 11);
+ addUnitPriority('isoWeekday', 11);
+
+ // PARSING
+
+ addRegexToken('d', match1to2);
+ addRegexToken('e', match1to2);
+ addRegexToken('E', match1to2);
+ addRegexToken('dd', function (isStrict, locale) {
+ return locale.weekdaysMinRegex(isStrict);
+ });
+ addRegexToken('ddd', function (isStrict, locale) {
+ return locale.weekdaysShortRegex(isStrict);
+ });
+ addRegexToken('dddd', function (isStrict, locale) {
+ return locale.weekdaysRegex(isStrict);
+ });
+
+ addWeekParseToken(['dd', 'ddd', 'dddd'], function (input, week, config, token) {
+ var weekday = config._locale.weekdaysParse(input, token, config._strict);
+ // if we didn't get a weekday name, mark the date as invalid
+ if (weekday != null) {
+ week.d = weekday;
+ } else {
+ getParsingFlags(config).invalidWeekday = input;
+ }
+ });
+
+ addWeekParseToken(['d', 'e', 'E'], function (input, week, config, token) {
+ week[token] = toInt(input);
+ });
+
+ // HELPERS
+
+ function parseWeekday(input, locale) {
+ if (typeof input !== 'string') {
+ return input;
+ }
+
+ if (!isNaN(input)) {
+ return parseInt(input, 10);
+ }
+
+ input = locale.weekdaysParse(input);
+ if (typeof input === 'number') {
+ return input;
+ }
+
+ return null;
+ }
+
+ function parseIsoWeekday(input, locale) {
+ if (typeof input === 'string') {
+ return locale.weekdaysParse(input) % 7 || 7;
+ }
+ return isNaN(input) ? null : input;
+ }
+
+ // LOCALES
+ function shiftWeekdays (ws, n) {
+ return ws.slice(n, 7).concat(ws.slice(0, n));
+ }
+
+ var defaultLocaleWeekdays = 'Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday'.split('_');
+ function localeWeekdays (m, format) {
+ var weekdays = isArray(this._weekdays) ? this._weekdays :
+ this._weekdays[(m && m !== true && this._weekdays.isFormat.test(format)) ? 'format' : 'standalone'];
+ return (m === true) ? shiftWeekdays(weekdays, this._week.dow)
+ : (m) ? weekdays[m.day()] : weekdays;
+ }
+
+ var defaultLocaleWeekdaysShort = 'Sun_Mon_Tue_Wed_Thu_Fri_Sat'.split('_');
+ function localeWeekdaysShort (m) {
+ return (m === true) ? shiftWeekdays(this._weekdaysShort, this._week.dow)
+ : (m) ? this._weekdaysShort[m.day()] : this._weekdaysShort;
+ }
+
+ var defaultLocaleWeekdaysMin = 'Su_Mo_Tu_We_Th_Fr_Sa'.split('_');
+ function localeWeekdaysMin (m) {
+ return (m === true) ? shiftWeekdays(this._weekdaysMin, this._week.dow)
+ : (m) ? this._weekdaysMin[m.day()] : this._weekdaysMin;
+ }
+
+ function handleStrictParse$1(weekdayName, format, strict) {
+ var i, ii, mom, llc = weekdayName.toLocaleLowerCase();
+ if (!this._weekdaysParse) {
+ this._weekdaysParse = [];
+ this._shortWeekdaysParse = [];
+ this._minWeekdaysParse = [];
+
+ for (i = 0; i < 7; ++i) {
+ mom = createUTC([2000, 1]).day(i);
+ this._minWeekdaysParse[i] = this.weekdaysMin(mom, '').toLocaleLowerCase();
+ this._shortWeekdaysParse[i] = this.weekdaysShort(mom, '').toLocaleLowerCase();
+ this._weekdaysParse[i] = this.weekdays(mom, '').toLocaleLowerCase();
+ }
+ }
+
+ if (strict) {
+ if (format === 'dddd') {
+ ii = indexOf.call(this._weekdaysParse, llc);
+ return ii !== -1 ? ii : null;
+ } else if (format === 'ddd') {
+ ii = indexOf.call(this._shortWeekdaysParse, llc);
+ return ii !== -1 ? ii : null;
+ } else {
+ ii = indexOf.call(this._minWeekdaysParse, llc);
+ return ii !== -1 ? ii : null;
+ }
+ } else {
+ if (format === 'dddd') {
+ ii = indexOf.call(this._weekdaysParse, llc);
+ if (ii !== -1) {
+ return ii;
+ }
+ ii = indexOf.call(this._shortWeekdaysParse, llc);
+ if (ii !== -1) {
+ return ii;
+ }
+ ii = indexOf.call(this._minWeekdaysParse, llc);
+ return ii !== -1 ? ii : null;
+ } else if (format === 'ddd') {
+ ii = indexOf.call(this._shortWeekdaysParse, llc);
+ if (ii !== -1) {
+ return ii;
+ }
+ ii = indexOf.call(this._weekdaysParse, llc);
+ if (ii !== -1) {
+ return ii;
+ }
+ ii = indexOf.call(this._minWeekdaysParse, llc);
+ return ii !== -1 ? ii : null;
+ } else {
+ ii = indexOf.call(this._minWeekdaysParse, llc);
+ if (ii !== -1) {
+ return ii;
+ }
+ ii = indexOf.call(this._weekdaysParse, llc);
+ if (ii !== -1) {
+ return ii;
+ }
+ ii = indexOf.call(this._shortWeekdaysParse, llc);
+ return ii !== -1 ? ii : null;
+ }
+ }
+ }
+
+ function localeWeekdaysParse (weekdayName, format, strict) {
+ var i, mom, regex;
+
+ if (this._weekdaysParseExact) {
+ return handleStrictParse$1.call(this, weekdayName, format, strict);
+ }
+
+ if (!this._weekdaysParse) {
+ this._weekdaysParse = [];
+ this._minWeekdaysParse = [];
+ this._shortWeekdaysParse = [];
+ this._fullWeekdaysParse = [];
+ }
+
+ for (i = 0; i < 7; i++) {
+ // make the regex if we don't have it already
+
+ mom = createUTC([2000, 1]).day(i);
+ if (strict && !this._fullWeekdaysParse[i]) {
+ this._fullWeekdaysParse[i] = new RegExp('^' + this.weekdays(mom, '').replace('.', '\\.?') + '$', 'i');
+ this._shortWeekdaysParse[i] = new RegExp('^' + this.weekdaysShort(mom, '').replace('.', '\\.?') + '$', 'i');
+ this._minWeekdaysParse[i] = new RegExp('^' + this.weekdaysMin(mom, '').replace('.', '\\.?') + '$', 'i');
+ }
+ if (!this._weekdaysParse[i]) {
+ regex = '^' + this.weekdays(mom, '') + '|^' + this.weekdaysShort(mom, '') + '|^' + this.weekdaysMin(mom, '');
+ this._weekdaysParse[i] = new RegExp(regex.replace('.', ''), 'i');
+ }
+ // test the regex
+ if (strict && format === 'dddd' && this._fullWeekdaysParse[i].test(weekdayName)) {
+ return i;
+ } else if (strict && format === 'ddd' && this._shortWeekdaysParse[i].test(weekdayName)) {
+ return i;
+ } else if (strict && format === 'dd' && this._minWeekdaysParse[i].test(weekdayName)) {
+ return i;
+ } else if (!strict && this._weekdaysParse[i].test(weekdayName)) {
+ return i;
+ }
+ }
+ }
+
+ // MOMENTS
+
+ function getSetDayOfWeek (input) {
+ if (!this.isValid()) {
+ return input != null ? this : NaN;
+ }
+ var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
+ if (input != null) {
+ input = parseWeekday(input, this.localeData());
+ return this.add(input - day, 'd');
+ } else {
+ return day;
+ }
+ }
+
+ function getSetLocaleDayOfWeek (input) {
+ if (!this.isValid()) {
+ return input != null ? this : NaN;
+ }
+ var weekday = (this.day() + 7 - this.localeData()._week.dow) % 7;
+ return input == null ? weekday : this.add(input - weekday, 'd');
+ }
+
+ function getSetISODayOfWeek (input) {
+ if (!this.isValid()) {
+ return input != null ? this : NaN;
+ }
+
+ // behaves the same as moment#day except
+ // as a getter, returns 7 instead of 0 (1-7 range instead of 0-6)
+ // as a setter, sunday should belong to the previous week.
+
+ if (input != null) {
+ var weekday = parseIsoWeekday(input, this.localeData());
+ return this.day(this.day() % 7 ? weekday : weekday - 7);
+ } else {
+ return this.day() || 7;
+ }
+ }
+
+ var defaultWeekdaysRegex = matchWord;
+ function weekdaysRegex (isStrict) {
+ if (this._weekdaysParseExact) {
+ if (!hasOwnProp(this, '_weekdaysRegex')) {
+ computeWeekdaysParse.call(this);
+ }
+ if (isStrict) {
+ return this._weekdaysStrictRegex;
+ } else {
+ return this._weekdaysRegex;
+ }
+ } else {
+ if (!hasOwnProp(this, '_weekdaysRegex')) {
+ this._weekdaysRegex = defaultWeekdaysRegex;
+ }
+ return this._weekdaysStrictRegex && isStrict ?
+ this._weekdaysStrictRegex : this._weekdaysRegex;
+ }
+ }
+
+ var defaultWeekdaysShortRegex = matchWord;
+ function weekdaysShortRegex (isStrict) {
+ if (this._weekdaysParseExact) {
+ if (!hasOwnProp(this, '_weekdaysRegex')) {
+ computeWeekdaysParse.call(this);
+ }
+ if (isStrict) {
+ return this._weekdaysShortStrictRegex;
+ } else {
+ return this._weekdaysShortRegex;
+ }
+ } else {
+ if (!hasOwnProp(this, '_weekdaysShortRegex')) {
+ this._weekdaysShortRegex = defaultWeekdaysShortRegex;
+ }
+ return this._weekdaysShortStrictRegex && isStrict ?
+ this._weekdaysShortStrictRegex : this._weekdaysShortRegex;
+ }
+ }
+
+ var defaultWeekdaysMinRegex = matchWord;
+ function weekdaysMinRegex (isStrict) {
+ if (this._weekdaysParseExact) {
+ if (!hasOwnProp(this, '_weekdaysRegex')) {
+ computeWeekdaysParse.call(this);
+ }
+ if (isStrict) {
+ return this._weekdaysMinStrictRegex;
+ } else {
+ return this._weekdaysMinRegex;
+ }
+ } else {
+ if (!hasOwnProp(this, '_weekdaysMinRegex')) {
+ this._weekdaysMinRegex = defaultWeekdaysMinRegex;
+ }
+ return this._weekdaysMinStrictRegex && isStrict ?
+ this._weekdaysMinStrictRegex : this._weekdaysMinRegex;
+ }
+ }
+
+
+ function computeWeekdaysParse () {
+ function cmpLenRev(a, b) {
+ return b.length - a.length;
+ }
+
+ var minPieces = [], shortPieces = [], longPieces = [], mixedPieces = [],
+ i, mom, minp, shortp, longp;
+ for (i = 0; i < 7; i++) {
+ // make the regex if we don't have it already
+ mom = createUTC([2000, 1]).day(i);
+ minp = this.weekdaysMin(mom, '');
+ shortp = this.weekdaysShort(mom, '');
+ longp = this.weekdays(mom, '');
+ minPieces.push(minp);
+ shortPieces.push(shortp);
+ longPieces.push(longp);
+ mixedPieces.push(minp);
+ mixedPieces.push(shortp);
+ mixedPieces.push(longp);
+ }
+ // Sorting makes sure if one weekday (or abbr) is a prefix of another it
+ // will match the longer piece.
+ minPieces.sort(cmpLenRev);
+ shortPieces.sort(cmpLenRev);
+ longPieces.sort(cmpLenRev);
+ mixedPieces.sort(cmpLenRev);
+ for (i = 0; i < 7; i++) {
+ shortPieces[i] = regexEscape(shortPieces[i]);
+ longPieces[i] = regexEscape(longPieces[i]);
+ mixedPieces[i] = regexEscape(mixedPieces[i]);
+ }
+
+ this._weekdaysRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
+ this._weekdaysShortRegex = this._weekdaysRegex;
+ this._weekdaysMinRegex = this._weekdaysRegex;
+
+ this._weekdaysStrictRegex = new RegExp('^(' + longPieces.join('|') + ')', 'i');
+ this._weekdaysShortStrictRegex = new RegExp('^(' + shortPieces.join('|') + ')', 'i');
+ this._weekdaysMinStrictRegex = new RegExp('^(' + minPieces.join('|') + ')', 'i');
+ }
+
+ // FORMATTING
+
+ function hFormat() {
+ return this.hours() % 12 || 12;
+ }
+
+ function kFormat() {
+ return this.hours() || 24;
+ }
+
+ addFormatToken('H', ['HH', 2], 0, 'hour');
+ addFormatToken('h', ['hh', 2], 0, hFormat);
+ addFormatToken('k', ['kk', 2], 0, kFormat);
+
+ addFormatToken('hmm', 0, 0, function () {
+ return '' + hFormat.apply(this) + zeroFill(this.minutes(), 2);
+ });
+
+ addFormatToken('hmmss', 0, 0, function () {
+ return '' + hFormat.apply(this) + zeroFill(this.minutes(), 2) +
+ zeroFill(this.seconds(), 2);
+ });
+
+ addFormatToken('Hmm', 0, 0, function () {
+ return '' + this.hours() + zeroFill(this.minutes(), 2);
+ });
+
+ addFormatToken('Hmmss', 0, 0, function () {
+ return '' + this.hours() + zeroFill(this.minutes(), 2) +
+ zeroFill(this.seconds(), 2);
+ });
+
+ function meridiem (token, lowercase) {
+ addFormatToken(token, 0, 0, function () {
+ return this.localeData().meridiem(this.hours(), this.minutes(), lowercase);
+ });
+ }
+
+ meridiem('a', true);
+ meridiem('A', false);
+
+ // ALIASES
+
+ addUnitAlias('hour', 'h');
+
+ // PRIORITY
+ addUnitPriority('hour', 13);
+
+ // PARSING
+
+ function matchMeridiem (isStrict, locale) {
+ return locale._meridiemParse;
+ }
+
+ addRegexToken('a', matchMeridiem);
+ addRegexToken('A', matchMeridiem);
+ addRegexToken('H', match1to2);
+ addRegexToken('h', match1to2);
+ addRegexToken('k', match1to2);
+ addRegexToken('HH', match1to2, match2);
+ addRegexToken('hh', match1to2, match2);
+ addRegexToken('kk', match1to2, match2);
+
+ addRegexToken('hmm', match3to4);
+ addRegexToken('hmmss', match5to6);
+ addRegexToken('Hmm', match3to4);
+ addRegexToken('Hmmss', match5to6);
+
+ addParseToken(['H', 'HH'], HOUR);
+ addParseToken(['k', 'kk'], function (input, array, config) {
+ var kInput = toInt(input);
+ array[HOUR] = kInput === 24 ? 0 : kInput;
+ });
+ addParseToken(['a', 'A'], function (input, array, config) {
+ config._isPm = config._locale.isPM(input);
+ config._meridiem = input;
+ });
+ addParseToken(['h', 'hh'], function (input, array, config) {
+ array[HOUR] = toInt(input);
+ getParsingFlags(config).bigHour = true;
+ });
+ addParseToken('hmm', function (input, array, config) {
+ var pos = input.length - 2;
+ array[HOUR] = toInt(input.substr(0, pos));
+ array[MINUTE] = toInt(input.substr(pos));
+ getParsingFlags(config).bigHour = true;
+ });
+ addParseToken('hmmss', function (input, array, config) {
+ var pos1 = input.length - 4;
+ var pos2 = input.length - 2;
+ array[HOUR] = toInt(input.substr(0, pos1));
+ array[MINUTE] = toInt(input.substr(pos1, 2));
+ array[SECOND] = toInt(input.substr(pos2));
+ getParsingFlags(config).bigHour = true;
+ });
+ addParseToken('Hmm', function (input, array, config) {
+ var pos = input.length - 2;
+ array[HOUR] = toInt(input.substr(0, pos));
+ array[MINUTE] = toInt(input.substr(pos));
+ });
+ addParseToken('Hmmss', function (input, array, config) {
+ var pos1 = input.length - 4;
+ var pos2 = input.length - 2;
+ array[HOUR] = toInt(input.substr(0, pos1));
+ array[MINUTE] = toInt(input.substr(pos1, 2));
+ array[SECOND] = toInt(input.substr(pos2));
+ });
+
+ // LOCALES
+
+ function localeIsPM (input) {
+ // IE8 Quirks Mode & IE7 Standards Mode do not allow accessing strings like arrays
+ // Using charAt should be more compatible.
+ return ((input + '').toLowerCase().charAt(0) === 'p');
+ }
+
+ var defaultLocaleMeridiemParse = /[ap]\.?m?\.?/i;
+ function localeMeridiem (hours, minutes, isLower) {
+ if (hours > 11) {
+ return isLower ? 'pm' : 'PM';
+ } else {
+ return isLower ? 'am' : 'AM';
+ }
+ }
+
+
+ // MOMENTS
+
+ // Setting the hour should keep the time, because the user explicitly
+ // specified which hour they want. So trying to maintain the same hour (in
+ // a new timezone) makes sense. Adding/subtracting hours does not follow
+ // this rule.
+ var getSetHour = makeGetSet('Hours', true);
+
+ var baseConfig = {
+ calendar: defaultCalendar,
+ longDateFormat: defaultLongDateFormat,
+ invalidDate: defaultInvalidDate,
+ ordinal: defaultOrdinal,
+ dayOfMonthOrdinalParse: defaultDayOfMonthOrdinalParse,
+ relativeTime: defaultRelativeTime,
+
+ months: defaultLocaleMonths,
+ monthsShort: defaultLocaleMonthsShort,
+
+ week: defaultLocaleWeek,
+
+ weekdays: defaultLocaleWeekdays,
+ weekdaysMin: defaultLocaleWeekdaysMin,
+ weekdaysShort: defaultLocaleWeekdaysShort,
+
+ meridiemParse: defaultLocaleMeridiemParse
+ };
+
+ // internal storage for locale config files
+ var locales = {};
+ var localeFamilies = {};
+ var globalLocale;
+
+ function normalizeLocale(key) {
+ return key ? key.toLowerCase().replace('_', '-') : key;
+ }
+
+ // pick the locale from the array
+ // try ['en-au', 'en-gb'] as 'en-au', 'en-gb', 'en', as in move through the list trying each
+ // substring from most specific to least, but move to the next array item if it's a more specific variant than the current root
+ function chooseLocale(names) {
+ var i = 0, j, next, locale, split;
+
+ while (i < names.length) {
+ split = normalizeLocale(names[i]).split('-');
+ j = split.length;
+ next = normalizeLocale(names[i + 1]);
+ next = next ? next.split('-') : null;
+ while (j > 0) {
+ locale = loadLocale(split.slice(0, j).join('-'));
+ if (locale) {
+ return locale;
+ }
+ if (next && next.length >= j && compareArrays(split, next, true) >= j - 1) {
+ //the next array item is better than a shallower substring of this one
+ break;
+ }
+ j--;
+ }
+ i++;
+ }
+ return globalLocale;
+ }
+
+ function loadLocale(name) {
+ var oldLocale = null;
+ // TODO: Find a better way to register and load all the locales in Node
+ if (!locales[name] && ('object' !== 'undefined') &&
+ module && module.exports) {
+ try {
+ oldLocale = globalLocale._abbr;
+ var aliasedRequire = commonjsRequire;
+ aliasedRequire('./locale/' + name);
+ getSetGlobalLocale(oldLocale);
+ } catch (e) {}
+ }
+ return locales[name];
+ }
+
+ // This function will load locale and then set the global locale. If
+ // no arguments are passed in, it will simply return the current global
+ // locale key.
+ function getSetGlobalLocale (key, values) {
+ var data;
+ if (key) {
+ if (isUndefined(values)) {
+ data = getLocale(key);
+ }
+ else {
+ data = defineLocale(key, values);
+ }
+
+ if (data) {
+ // moment.duration._locale = moment._locale = data;
+ globalLocale = data;
+ }
+ else {
+ if ((typeof console !== 'undefined') && console.warn) {
+ //warn user if arguments are passed but the locale could not be set
+ console.warn('Locale ' + key + ' not found. Did you forget to load it?');
+ }
+ }
+ }
+
+ return globalLocale._abbr;
+ }
+
+ function defineLocale (name, config) {
+ if (config !== null) {
+ var locale, parentConfig = baseConfig;
+ config.abbr = name;
+ if (locales[name] != null) {
+ deprecateSimple('defineLocaleOverride',
+ 'use moment.updateLocale(localeName, config) to change ' +
+ 'an existing locale. moment.defineLocale(localeName, ' +
+ 'config) should only be used for creating a new locale ' +
+ 'See http://momentjs.com/guides/#/warnings/define-locale/ for more info.');
+ parentConfig = locales[name]._config;
+ } else if (config.parentLocale != null) {
+ if (locales[config.parentLocale] != null) {
+ parentConfig = locales[config.parentLocale]._config;
+ } else {
+ locale = loadLocale(config.parentLocale);
+ if (locale != null) {
+ parentConfig = locale._config;
+ } else {
+ if (!localeFamilies[config.parentLocale]) {
+ localeFamilies[config.parentLocale] = [];
+ }
+ localeFamilies[config.parentLocale].push({
+ name: name,
+ config: config
+ });
+ return null;
+ }
+ }
+ }
+ locales[name] = new Locale(mergeConfigs(parentConfig, config));
+
+ if (localeFamilies[name]) {
+ localeFamilies[name].forEach(function (x) {
+ defineLocale(x.name, x.config);
+ });
+ }
+
+ // backwards compat for now: also set the locale
+ // make sure we set the locale AFTER all child locales have been
+ // created, so we won't end up with the child locale set.
+ getSetGlobalLocale(name);
+
+
+ return locales[name];
+ } else {
+ // useful for testing
+ delete locales[name];
+ return null;
+ }
+ }
+
+ function updateLocale(name, config) {
+ if (config != null) {
+ var locale, tmpLocale, parentConfig = baseConfig;
+ // MERGE
+ tmpLocale = loadLocale(name);
+ if (tmpLocale != null) {
+ parentConfig = tmpLocale._config;
+ }
+ config = mergeConfigs(parentConfig, config);
+ locale = new Locale(config);
+ locale.parentLocale = locales[name];
+ locales[name] = locale;
+
+ // backwards compat for now: also set the locale
+ getSetGlobalLocale(name);
+ } else {
+ // pass null for config to unupdate, useful for tests
+ if (locales[name] != null) {
+ if (locales[name].parentLocale != null) {
+ locales[name] = locales[name].parentLocale;
+ } else if (locales[name] != null) {
+ delete locales[name];
+ }
+ }
+ }
+ return locales[name];
+ }
+
+ // returns locale data
+ function getLocale (key) {
+ var locale;
+
+ if (key && key._locale && key._locale._abbr) {
+ key = key._locale._abbr;
+ }
+
+ if (!key) {
+ return globalLocale;
+ }
+
+ if (!isArray(key)) {
+ //short-circuit everything else
+ locale = loadLocale(key);
+ if (locale) {
+ return locale;
+ }
+ key = [key];
+ }
+
+ return chooseLocale(key);
+ }
+
+ function listLocales() {
+ return keys(locales);
+ }
+
+ function checkOverflow (m) {
+ var overflow;
+ var a = m._a;
+
+ if (a && getParsingFlags(m).overflow === -2) {
+ overflow =
+ a[MONTH] < 0 || a[MONTH] > 11 ? MONTH :
+ a[DATE] < 1 || a[DATE] > daysInMonth(a[YEAR], a[MONTH]) ? DATE :
+ a[HOUR] < 0 || a[HOUR] > 24 || (a[HOUR] === 24 && (a[MINUTE] !== 0 || a[SECOND] !== 0 || a[MILLISECOND] !== 0)) ? HOUR :
+ a[MINUTE] < 0 || a[MINUTE] > 59 ? MINUTE :
+ a[SECOND] < 0 || a[SECOND] > 59 ? SECOND :
+ a[MILLISECOND] < 0 || a[MILLISECOND] > 999 ? MILLISECOND :
+ -1;
+
+ if (getParsingFlags(m)._overflowDayOfYear && (overflow < YEAR || overflow > DATE)) {
+ overflow = DATE;
+ }
+ if (getParsingFlags(m)._overflowWeeks && overflow === -1) {
+ overflow = WEEK;
+ }
+ if (getParsingFlags(m)._overflowWeekday && overflow === -1) {
+ overflow = WEEKDAY;
+ }
+
+ getParsingFlags(m).overflow = overflow;
+ }
+
+ return m;
+ }
+
+ // Pick the first defined of two or three arguments.
+ function defaults(a, b, c) {
+ if (a != null) {
+ return a;
+ }
+ if (b != null) {
+ return b;
+ }
+ return c;
+ }
+
+ function currentDateArray(config) {
+ // hooks is actually the exported moment object
+ var nowValue = new Date(hooks.now());
+ if (config._useUTC) {
+ return [nowValue.getUTCFullYear(), nowValue.getUTCMonth(), nowValue.getUTCDate()];
+ }
+ return [nowValue.getFullYear(), nowValue.getMonth(), nowValue.getDate()];
+ }
+
+ // convert an array to a date.
+ // the array should mirror the parameters below
+ // note: all values past the year are optional and will default to the lowest possible value.
+ // [year, month, day , hour, minute, second, millisecond]
+ function configFromArray (config) {
+ var i, date, input = [], currentDate, expectedWeekday, yearToUse;
+
+ if (config._d) {
+ return;
+ }
+
+ currentDate = currentDateArray(config);
+
+ //compute day of the year from weeks and weekdays
+ if (config._w && config._a[DATE] == null && config._a[MONTH] == null) {
+ dayOfYearFromWeekInfo(config);
+ }
+
+ //if the day of the year is set, figure out what it is
+ if (config._dayOfYear != null) {
+ yearToUse = defaults(config._a[YEAR], currentDate[YEAR]);
+
+ if (config._dayOfYear > daysInYear(yearToUse) || config._dayOfYear === 0) {
+ getParsingFlags(config)._overflowDayOfYear = true;
+ }
+
+ date = createUTCDate(yearToUse, 0, config._dayOfYear);
+ config._a[MONTH] = date.getUTCMonth();
+ config._a[DATE] = date.getUTCDate();
+ }
+
+ // Default to current date.
+ // * if no year, month, day of month are given, default to today
+ // * if day of month is given, default month and year
+ // * if month is given, default only year
+ // * if year is given, don't default anything
+ for (i = 0; i < 3 && config._a[i] == null; ++i) {
+ config._a[i] = input[i] = currentDate[i];
+ }
+
+ // Zero out whatever was not defaulted, including time
+ for (; i < 7; i++) {
+ config._a[i] = input[i] = (config._a[i] == null) ? (i === 2 ? 1 : 0) : config._a[i];
+ }
+
+ // Check for 24:00:00.000
+ if (config._a[HOUR] === 24 &&
+ config._a[MINUTE] === 0 &&
+ config._a[SECOND] === 0 &&
+ config._a[MILLISECOND] === 0) {
+ config._nextDay = true;
+ config._a[HOUR] = 0;
+ }
+
+ config._d = (config._useUTC ? createUTCDate : createDate).apply(null, input);
+ expectedWeekday = config._useUTC ? config._d.getUTCDay() : config._d.getDay();
+
+ // Apply timezone offset from input. The actual utcOffset can be changed
+ // with parseZone.
+ if (config._tzm != null) {
+ config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
+ }
+
+ if (config._nextDay) {
+ config._a[HOUR] = 24;
+ }
+
+ // check for mismatching day of week
+ if (config._w && typeof config._w.d !== 'undefined' && config._w.d !== expectedWeekday) {
+ getParsingFlags(config).weekdayMismatch = true;
+ }
+ }
+
+ function dayOfYearFromWeekInfo(config) {
+ var w, weekYear, week, weekday, dow, doy, temp, weekdayOverflow;
+
+ w = config._w;
+ if (w.GG != null || w.W != null || w.E != null) {
+ dow = 1;
+ doy = 4;
+
+ // TODO: We need to take the current isoWeekYear, but that depends on
+ // how we interpret now (local, utc, fixed offset). So create
+ // a now version of current config (take local/utc/offset flags, and
+ // create now).
+ weekYear = defaults(w.GG, config._a[YEAR], weekOfYear(createLocal(), 1, 4).year);
+ week = defaults(w.W, 1);
+ weekday = defaults(w.E, 1);
+ if (weekday < 1 || weekday > 7) {
+ weekdayOverflow = true;
+ }
+ } else {
+ dow = config._locale._week.dow;
+ doy = config._locale._week.doy;
+
+ var curWeek = weekOfYear(createLocal(), dow, doy);
+
+ weekYear = defaults(w.gg, config._a[YEAR], curWeek.year);
+
+ // Default to current week.
+ week = defaults(w.w, curWeek.week);
+
+ if (w.d != null) {
+ // weekday -- low day numbers are considered next week
+ weekday = w.d;
+ if (weekday < 0 || weekday > 6) {
+ weekdayOverflow = true;
+ }
+ } else if (w.e != null) {
+ // local weekday -- counting starts from beginning of week
+ weekday = w.e + dow;
+ if (w.e < 0 || w.e > 6) {
+ weekdayOverflow = true;
+ }
+ } else {
+ // default to beginning of week
+ weekday = dow;
+ }
+ }
+ if (week < 1 || week > weeksInYear(weekYear, dow, doy)) {
+ getParsingFlags(config)._overflowWeeks = true;
+ } else if (weekdayOverflow != null) {
+ getParsingFlags(config)._overflowWeekday = true;
+ } else {
+ temp = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy);
+ config._a[YEAR] = temp.year;
+ config._dayOfYear = temp.dayOfYear;
+ }
+ }
+
+ // iso 8601 regex
+ // 0000-00-00 0000-W00 or 0000-W00-0 + T + 00 or 00:00 or 00:00:00 or 00:00:00.000 + +00:00 or +0000 or +00)
+ var extendedIsoRegex = /^\s*((?:[+-]\d{6}|\d{4})-(?:\d\d-\d\d|W\d\d-\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?::\d\d(?::\d\d(?:[.,]\d+)?)?)?)([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?$/;
+ var basicIsoRegex = /^\s*((?:[+-]\d{6}|\d{4})(?:\d\d\d\d|W\d\d\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?:\d\d(?:\d\d(?:[.,]\d+)?)?)?)([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?$/;
+
+ var tzRegex = /Z|[+-]\d\d(?::?\d\d)?/;
+
+ var isoDates = [
+ ['YYYYYY-MM-DD', /[+-]\d{6}-\d\d-\d\d/],
+ ['YYYY-MM-DD', /\d{4}-\d\d-\d\d/],
+ ['GGGG-[W]WW-E', /\d{4}-W\d\d-\d/],
+ ['GGGG-[W]WW', /\d{4}-W\d\d/, false],
+ ['YYYY-DDD', /\d{4}-\d{3}/],
+ ['YYYY-MM', /\d{4}-\d\d/, false],
+ ['YYYYYYMMDD', /[+-]\d{10}/],
+ ['YYYYMMDD', /\d{8}/],
+ // YYYYMM is NOT allowed by the standard
+ ['GGGG[W]WWE', /\d{4}W\d{3}/],
+ ['GGGG[W]WW', /\d{4}W\d{2}/, false],
+ ['YYYYDDD', /\d{7}/]
+ ];
+
+ // iso time formats and regexes
+ var isoTimes = [
+ ['HH:mm:ss.SSSS', /\d\d:\d\d:\d\d\.\d+/],
+ ['HH:mm:ss,SSSS', /\d\d:\d\d:\d\d,\d+/],
+ ['HH:mm:ss', /\d\d:\d\d:\d\d/],
+ ['HH:mm', /\d\d:\d\d/],
+ ['HHmmss.SSSS', /\d\d\d\d\d\d\.\d+/],
+ ['HHmmss,SSSS', /\d\d\d\d\d\d,\d+/],
+ ['HHmmss', /\d\d\d\d\d\d/],
+ ['HHmm', /\d\d\d\d/],
+ ['HH', /\d\d/]
+ ];
+
+ var aspNetJsonRegex = /^\/?Date\((\-?\d+)/i;
+
+ // date from iso format
+ function configFromISO(config) {
+ var i, l,
+ string = config._i,
+ match = extendedIsoRegex.exec(string) || basicIsoRegex.exec(string),
+ allowTime, dateFormat, timeFormat, tzFormat;
+
+ if (match) {
+ getParsingFlags(config).iso = true;
+
+ for (i = 0, l = isoDates.length; i < l; i++) {
+ if (isoDates[i][1].exec(match[1])) {
+ dateFormat = isoDates[i][0];
+ allowTime = isoDates[i][2] !== false;
+ break;
+ }
+ }
+ if (dateFormat == null) {
+ config._isValid = false;
+ return;
+ }
+ if (match[3]) {
+ for (i = 0, l = isoTimes.length; i < l; i++) {
+ if (isoTimes[i][1].exec(match[3])) {
+ // match[2] should be 'T' or space
+ timeFormat = (match[2] || ' ') + isoTimes[i][0];
+ break;
+ }
+ }
+ if (timeFormat == null) {
+ config._isValid = false;
+ return;
+ }
+ }
+ if (!allowTime && timeFormat != null) {
+ config._isValid = false;
+ return;
+ }
+ if (match[4]) {
+ if (tzRegex.exec(match[4])) {
+ tzFormat = 'Z';
+ } else {
+ config._isValid = false;
+ return;
+ }
+ }
+ config._f = dateFormat + (timeFormat || '') + (tzFormat || '');
+ configFromStringAndFormat(config);
+ } else {
+ config._isValid = false;
+ }
+ }
+
+ // RFC 2822 regex: For details see https://tools.ietf.org/html/rfc2822#section-3.3
+ var rfc2822 = /^(?:(Mon|Tue|Wed|Thu|Fri|Sat|Sun),?\s)?(\d{1,2})\s(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\s(\d{2,4})\s(\d\d):(\d\d)(?::(\d\d))?\s(?:(UT|GMT|[ECMP][SD]T)|([Zz])|([+-]\d{4}))$/;
+
+ function extractFromRFC2822Strings(yearStr, monthStr, dayStr, hourStr, minuteStr, secondStr) {
+ var result = [
+ untruncateYear(yearStr),
+ defaultLocaleMonthsShort.indexOf(monthStr),
+ parseInt(dayStr, 10),
+ parseInt(hourStr, 10),
+ parseInt(minuteStr, 10)
+ ];
+
+ if (secondStr) {
+ result.push(parseInt(secondStr, 10));
+ }
+
+ return result;
+ }
+
+ function untruncateYear(yearStr) {
+ var year = parseInt(yearStr, 10);
+ if (year <= 49) {
+ return 2000 + year;
+ } else if (year <= 999) {
+ return 1900 + year;
+ }
+ return year;
+ }
+
+ function preprocessRFC2822(s) {
+ // Remove comments and folding whitespace and replace multiple-spaces with a single space
+ return s.replace(/\([^)]*\)|[\n\t]/g, ' ').replace(/(\s\s+)/g, ' ').replace(/^\s\s*/, '').replace(/\s\s*$/, '');
+ }
+
+ function checkWeekday(weekdayStr, parsedInput, config) {
+ if (weekdayStr) {
+ // TODO: Replace the vanilla JS Date object with an indepentent day-of-week check.
+ var weekdayProvided = defaultLocaleWeekdaysShort.indexOf(weekdayStr),
+ weekdayActual = new Date(parsedInput[0], parsedInput[1], parsedInput[2]).getDay();
+ if (weekdayProvided !== weekdayActual) {
+ getParsingFlags(config).weekdayMismatch = true;
+ config._isValid = false;
+ return false;
+ }
+ }
+ return true;
+ }
+
+ var obsOffsets = {
+ UT: 0,
+ GMT: 0,
+ EDT: -4 * 60,
+ EST: -5 * 60,
+ CDT: -5 * 60,
+ CST: -6 * 60,
+ MDT: -6 * 60,
+ MST: -7 * 60,
+ PDT: -7 * 60,
+ PST: -8 * 60
+ };
+
+ function calculateOffset(obsOffset, militaryOffset, numOffset) {
+ if (obsOffset) {
+ return obsOffsets[obsOffset];
+ } else if (militaryOffset) {
+ // the only allowed military tz is Z
+ return 0;
+ } else {
+ var hm = parseInt(numOffset, 10);
+ var m = hm % 100, h = (hm - m) / 100;
+ return h * 60 + m;
+ }
+ }
+
+ // date and time from ref 2822 format
+ function configFromRFC2822(config) {
+ var match = rfc2822.exec(preprocessRFC2822(config._i));
+ if (match) {
+ var parsedArray = extractFromRFC2822Strings(match[4], match[3], match[2], match[5], match[6], match[7]);
+ if (!checkWeekday(match[1], parsedArray, config)) {
+ return;
+ }
+
+ config._a = parsedArray;
+ config._tzm = calculateOffset(match[8], match[9], match[10]);
+
+ config._d = createUTCDate.apply(null, config._a);
+ config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
+
+ getParsingFlags(config).rfc2822 = true;
+ } else {
+ config._isValid = false;
+ }
+ }
+
+ // date from iso format or fallback
+ function configFromString(config) {
+ var matched = aspNetJsonRegex.exec(config._i);
+
+ if (matched !== null) {
+ config._d = new Date(+matched[1]);
+ return;
+ }
+
+ configFromISO(config);
+ if (config._isValid === false) {
+ delete config._isValid;
+ } else {
+ return;
+ }
+
+ configFromRFC2822(config);
+ if (config._isValid === false) {
+ delete config._isValid;
+ } else {
+ return;
+ }
+
+ // Final attempt, use Input Fallback
+ hooks.createFromInputFallback(config);
+ }
+
+ hooks.createFromInputFallback = deprecate(
+ 'value provided is not in a recognized RFC2822 or ISO format. moment construction falls back to js Date(), ' +
+ 'which is not reliable across all browsers and versions. Non RFC2822/ISO date formats are ' +
+ 'discouraged and will be removed in an upcoming major release. Please refer to ' +
+ 'http://momentjs.com/guides/#/warnings/js-date/ for more info.',
+ function (config) {
+ config._d = new Date(config._i + (config._useUTC ? ' UTC' : ''));
+ }
+ );
+
+ // constant that refers to the ISO standard
+ hooks.ISO_8601 = function () {};
+
+ // constant that refers to the RFC 2822 form
+ hooks.RFC_2822 = function () {};
+
+ // date from string and format string
+ function configFromStringAndFormat(config) {
+ // TODO: Move this to another part of the creation flow to prevent circular deps
+ if (config._f === hooks.ISO_8601) {
+ configFromISO(config);
+ return;
+ }
+ if (config._f === hooks.RFC_2822) {
+ configFromRFC2822(config);
+ return;
+ }
+ config._a = [];
+ getParsingFlags(config).empty = true;
+
+ // This array is used to make a Date, either with `new Date` or `Date.UTC`
+ var string = '' + config._i,
+ i, parsedInput, tokens, token, skipped,
+ stringLength = string.length,
+ totalParsedInputLength = 0;
+
+ tokens = expandFormat(config._f, config._locale).match(formattingTokens) || [];
+
+ for (i = 0; i < tokens.length; i++) {
+ token = tokens[i];
+ parsedInput = (string.match(getParseRegexForToken(token, config)) || [])[0];
+ // console.log('token', token, 'parsedInput', parsedInput,
+ // 'regex', getParseRegexForToken(token, config));
+ if (parsedInput) {
+ skipped = string.substr(0, string.indexOf(parsedInput));
+ if (skipped.length > 0) {
+ getParsingFlags(config).unusedInput.push(skipped);
+ }
+ string = string.slice(string.indexOf(parsedInput) + parsedInput.length);
+ totalParsedInputLength += parsedInput.length;
+ }
+ // don't parse if it's not a known token
+ if (formatTokenFunctions[token]) {
+ if (parsedInput) {
+ getParsingFlags(config).empty = false;
+ }
+ else {
+ getParsingFlags(config).unusedTokens.push(token);
+ }
+ addTimeToArrayFromToken(token, parsedInput, config);
+ }
+ else if (config._strict && !parsedInput) {
+ getParsingFlags(config).unusedTokens.push(token);
+ }
+ }
+
+ // add remaining unparsed input length to the string
+ getParsingFlags(config).charsLeftOver = stringLength - totalParsedInputLength;
+ if (string.length > 0) {
+ getParsingFlags(config).unusedInput.push(string);
+ }
+
+ // clear _12h flag if hour is <= 12
+ if (config._a[HOUR] <= 12 &&
+ getParsingFlags(config).bigHour === true &&
+ config._a[HOUR] > 0) {
+ getParsingFlags(config).bigHour = undefined;
+ }
+
+ getParsingFlags(config).parsedDateParts = config._a.slice(0);
+ getParsingFlags(config).meridiem = config._meridiem;
+ // handle meridiem
+ config._a[HOUR] = meridiemFixWrap(config._locale, config._a[HOUR], config._meridiem);
+
+ configFromArray(config);
+ checkOverflow(config);
+ }
+
+
+ function meridiemFixWrap (locale, hour, meridiem) {
+ var isPm;
+
+ if (meridiem == null) {
+ // nothing to do
+ return hour;
+ }
+ if (locale.meridiemHour != null) {
+ return locale.meridiemHour(hour, meridiem);
+ } else if (locale.isPM != null) {
+ // Fallback
+ isPm = locale.isPM(meridiem);
+ if (isPm && hour < 12) {
+ hour += 12;
+ }
+ if (!isPm && hour === 12) {
+ hour = 0;
+ }
+ return hour;
+ } else {
+ // this is not supposed to happen
+ return hour;
+ }
+ }
+
+ // date from string and array of format strings
+ function configFromStringAndArray(config) {
+ var tempConfig,
+ bestMoment,
+
+ scoreToBeat,
+ i,
+ currentScore;
+
+ if (config._f.length === 0) {
+ getParsingFlags(config).invalidFormat = true;
+ config._d = new Date(NaN);
+ return;
+ }
+
+ for (i = 0; i < config._f.length; i++) {
+ currentScore = 0;
+ tempConfig = copyConfig({}, config);
+ if (config._useUTC != null) {
+ tempConfig._useUTC = config._useUTC;
+ }
+ tempConfig._f = config._f[i];
+ configFromStringAndFormat(tempConfig);
+
+ if (!isValid(tempConfig)) {
+ continue;
+ }
+
+ // if there is any input that was not parsed add a penalty for that format
+ currentScore += getParsingFlags(tempConfig).charsLeftOver;
+
+ //or tokens
+ currentScore += getParsingFlags(tempConfig).unusedTokens.length * 10;
+
+ getParsingFlags(tempConfig).score = currentScore;
+
+ if (scoreToBeat == null || currentScore < scoreToBeat) {
+ scoreToBeat = currentScore;
+ bestMoment = tempConfig;
+ }
+ }
+
+ extend(config, bestMoment || tempConfig);
+ }
+
+ function configFromObject(config) {
+ if (config._d) {
+ return;
+ }
+
+ var i = normalizeObjectUnits(config._i);
+ config._a = map([i.year, i.month, i.day || i.date, i.hour, i.minute, i.second, i.millisecond], function (obj) {
+ return obj && parseInt(obj, 10);
+ });
+
+ configFromArray(config);
+ }
+
+ function createFromConfig (config) {
+ var res = new Moment(checkOverflow(prepareConfig(config)));
+ if (res._nextDay) {
+ // Adding is smart enough around DST
+ res.add(1, 'd');
+ res._nextDay = undefined;
+ }
+
+ return res;
+ }
+
+ function prepareConfig (config) {
+ var input = config._i,
+ format = config._f;
+
+ config._locale = config._locale || getLocale(config._l);
+
+ if (input === null || (format === undefined && input === '')) {
+ return createInvalid({nullInput: true});
+ }
+
+ if (typeof input === 'string') {
+ config._i = input = config._locale.preparse(input);
+ }
+
+ if (isMoment(input)) {
+ return new Moment(checkOverflow(input));
+ } else if (isDate(input)) {
+ config._d = input;
+ } else if (isArray(format)) {
+ configFromStringAndArray(config);
+ } else if (format) {
+ configFromStringAndFormat(config);
+ } else {
+ configFromInput(config);
+ }
+
+ if (!isValid(config)) {
+ config._d = null;
+ }
+
+ return config;
+ }
+
+ function configFromInput(config) {
+ var input = config._i;
+ if (isUndefined(input)) {
+ config._d = new Date(hooks.now());
+ } else if (isDate(input)) {
+ config._d = new Date(input.valueOf());
+ } else if (typeof input === 'string') {
+ configFromString(config);
+ } else if (isArray(input)) {
+ config._a = map(input.slice(0), function (obj) {
+ return parseInt(obj, 10);
+ });
+ configFromArray(config);
+ } else if (isObject(input)) {
+ configFromObject(config);
+ } else if (isNumber(input)) {
+ // from milliseconds
+ config._d = new Date(input);
+ } else {
+ hooks.createFromInputFallback(config);
+ }
+ }
+
+ function createLocalOrUTC (input, format, locale, strict, isUTC) {
+ var c = {};
+
+ if (locale === true || locale === false) {
+ strict = locale;
+ locale = undefined;
+ }
+
+ if ((isObject(input) && isObjectEmpty(input)) ||
+ (isArray(input) && input.length === 0)) {
+ input = undefined;
+ }
+ // object construction must be done this way.
+ // https://github.com/moment/moment/issues/1423
+ c._isAMomentObject = true;
+ c._useUTC = c._isUTC = isUTC;
+ c._l = locale;
+ c._i = input;
+ c._f = format;
+ c._strict = strict;
+
+ return createFromConfig(c);
+ }
+
+ function createLocal (input, format, locale, strict) {
+ return createLocalOrUTC(input, format, locale, strict, false);
+ }
+
+ var prototypeMin = deprecate(
+ 'moment().min is deprecated, use moment.max instead. http://momentjs.com/guides/#/warnings/min-max/',
+ function () {
+ var other = createLocal.apply(null, arguments);
+ if (this.isValid() && other.isValid()) {
+ return other < this ? this : other;
+ } else {
+ return createInvalid();
+ }
+ }
+ );
+
+ var prototypeMax = deprecate(
+ 'moment().max is deprecated, use moment.min instead. http://momentjs.com/guides/#/warnings/min-max/',
+ function () {
+ var other = createLocal.apply(null, arguments);
+ if (this.isValid() && other.isValid()) {
+ return other > this ? this : other;
+ } else {
+ return createInvalid();
+ }
+ }
+ );
+
+ // Pick a moment m from moments so that m[fn](other) is true for all
+ // other. This relies on the function fn to be transitive.
+ //
+ // moments should either be an array of moment objects or an array, whose
+ // first element is an array of moment objects.
+ function pickBy(fn, moments) {
+ var res, i;
+ if (moments.length === 1 && isArray(moments[0])) {
+ moments = moments[0];
+ }
+ if (!moments.length) {
+ return createLocal();
+ }
+ res = moments[0];
+ for (i = 1; i < moments.length; ++i) {
+ if (!moments[i].isValid() || moments[i][fn](res)) {
+ res = moments[i];
+ }
+ }
+ return res;
+ }
+
+ // TODO: Use [].sort instead?
+ function min () {
+ var args = [].slice.call(arguments, 0);
+
+ return pickBy('isBefore', args);
+ }
+
+ function max () {
+ var args = [].slice.call(arguments, 0);
+
+ return pickBy('isAfter', args);
+ }
+
+ var now = function () {
+ return Date.now ? Date.now() : +(new Date());
+ };
+
+ var ordering = ['year', 'quarter', 'month', 'week', 'day', 'hour', 'minute', 'second', 'millisecond'];
+
+ function isDurationValid(m) {
+ for (var key in m) {
+ if (!(indexOf.call(ordering, key) !== -1 && (m[key] == null || !isNaN(m[key])))) {
+ return false;
+ }
+ }
+
+ var unitHasDecimal = false;
+ for (var i = 0; i < ordering.length; ++i) {
+ if (m[ordering[i]]) {
+ if (unitHasDecimal) {
+ return false; // only allow non-integers for smallest unit
+ }
+ if (parseFloat(m[ordering[i]]) !== toInt(m[ordering[i]])) {
+ unitHasDecimal = true;
+ }
+ }
+ }
+
+ return true;
+ }
+
+ function isValid$1() {
+ return this._isValid;
+ }
+
+ function createInvalid$1() {
+ return createDuration(NaN);
+ }
+
+ function Duration (duration) {
+ var normalizedInput = normalizeObjectUnits(duration),
+ years = normalizedInput.year || 0,
+ quarters = normalizedInput.quarter || 0,
+ months = normalizedInput.month || 0,
+ weeks = normalizedInput.week || normalizedInput.isoWeek || 0,
+ days = normalizedInput.day || 0,
+ hours = normalizedInput.hour || 0,
+ minutes = normalizedInput.minute || 0,
+ seconds = normalizedInput.second || 0,
+ milliseconds = normalizedInput.millisecond || 0;
+
+ this._isValid = isDurationValid(normalizedInput);
+
+ // representation for dateAddRemove
+ this._milliseconds = +milliseconds +
+ seconds * 1e3 + // 1000
+ minutes * 6e4 + // 1000 * 60
+ hours * 1000 * 60 * 60; //using 1000 * 60 * 60 instead of 36e5 to avoid floating point rounding errors https://github.com/moment/moment/issues/2978
+ // Because of dateAddRemove treats 24 hours as different from a
+ // day when working around DST, we need to store them separately
+ this._days = +days +
+ weeks * 7;
+ // It is impossible to translate months into days without knowing
+ // which months you are are talking about, so we have to store
+ // it separately.
+ this._months = +months +
+ quarters * 3 +
+ years * 12;
+
+ this._data = {};
+
+ this._locale = getLocale();
+
+ this._bubble();
+ }
+
+ function isDuration (obj) {
+ return obj instanceof Duration;
+ }
+
+ function absRound (number) {
+ if (number < 0) {
+ return Math.round(-1 * number) * -1;
+ } else {
+ return Math.round(number);
+ }
+ }
+
+ // FORMATTING
+
+ function offset (token, separator) {
+ addFormatToken(token, 0, 0, function () {
+ var offset = this.utcOffset();
+ var sign = '+';
+ if (offset < 0) {
+ offset = -offset;
+ sign = '-';
+ }
+ return sign + zeroFill(~~(offset / 60), 2) + separator + zeroFill(~~(offset) % 60, 2);
+ });
+ }
+
+ offset('Z', ':');
+ offset('ZZ', '');
+
+ // PARSING
+
+ addRegexToken('Z', matchShortOffset);
+ addRegexToken('ZZ', matchShortOffset);
+ addParseToken(['Z', 'ZZ'], function (input, array, config) {
+ config._useUTC = true;
+ config._tzm = offsetFromString(matchShortOffset, input);
+ });
+
+ // HELPERS
+
+ // timezone chunker
+ // '+10:00' > ['10', '00']
+ // '-1530' > ['-15', '30']
+ var chunkOffset = /([\+\-]|\d\d)/gi;
+
+ function offsetFromString(matcher, string) {
+ var matches = (string || '').match(matcher);
+
+ if (matches === null) {
+ return null;
+ }
+
+ var chunk = matches[matches.length - 1] || [];
+ var parts = (chunk + '').match(chunkOffset) || ['-', 0, 0];
+ var minutes = +(parts[1] * 60) + toInt(parts[2]);
+
+ return minutes === 0 ?
+ 0 :
+ parts[0] === '+' ? minutes : -minutes;
+ }
+
+ // Return a moment from input, that is local/utc/zone equivalent to model.
+ function cloneWithOffset(input, model) {
+ var res, diff;
+ if (model._isUTC) {
+ res = model.clone();
+ diff = (isMoment(input) || isDate(input) ? input.valueOf() : createLocal(input).valueOf()) - res.valueOf();
+ // Use low-level api, because this fn is low-level api.
+ res._d.setTime(res._d.valueOf() + diff);
+ hooks.updateOffset(res, false);
+ return res;
+ } else {
+ return createLocal(input).local();
+ }
+ }
+
+ function getDateOffset (m) {
+ // On Firefox.24 Date#getTimezoneOffset returns a floating point.
+ // https://github.com/moment/moment/pull/1871
+ return -Math.round(m._d.getTimezoneOffset() / 15) * 15;
+ }
+
+ // HOOKS
+
+ // This function will be called whenever a moment is mutated.
+ // It is intended to keep the offset in sync with the timezone.
+ hooks.updateOffset = function () {};
+
+ // MOMENTS
+
+ // keepLocalTime = true means only change the timezone, without
+ // affecting the local hour. So 5:31:26 +0300 --[utcOffset(2, true)]-->
+ // 5:31:26 +0200 It is possible that 5:31:26 doesn't exist with offset
+ // +0200, so we adjust the time as needed, to be valid.
+ //
+ // Keeping the time actually adds/subtracts (one hour)
+ // from the actual represented time. That is why we call updateOffset
+ // a second time. In case it wants us to change the offset again
+ // _changeInProgress == true case, then we have to adjust, because
+ // there is no such time in the given timezone.
+ function getSetOffset (input, keepLocalTime, keepMinutes) {
+ var offset = this._offset || 0,
+ localAdjust;
+ if (!this.isValid()) {
+ return input != null ? this : NaN;
+ }
+ if (input != null) {
+ if (typeof input === 'string') {
+ input = offsetFromString(matchShortOffset, input);
+ if (input === null) {
+ return this;
+ }
+ } else if (Math.abs(input) < 16 && !keepMinutes) {
+ input = input * 60;
+ }
+ if (!this._isUTC && keepLocalTime) {
+ localAdjust = getDateOffset(this);
+ }
+ this._offset = input;
+ this._isUTC = true;
+ if (localAdjust != null) {
+ this.add(localAdjust, 'm');
+ }
+ if (offset !== input) {
+ if (!keepLocalTime || this._changeInProgress) {
+ addSubtract(this, createDuration(input - offset, 'm'), 1, false);
+ } else if (!this._changeInProgress) {
+ this._changeInProgress = true;
+ hooks.updateOffset(this, true);
+ this._changeInProgress = null;
+ }
+ }
+ return this;
+ } else {
+ return this._isUTC ? offset : getDateOffset(this);
+ }
+ }
+
+ function getSetZone (input, keepLocalTime) {
+ if (input != null) {
+ if (typeof input !== 'string') {
+ input = -input;
+ }
+
+ this.utcOffset(input, keepLocalTime);
+
+ return this;
+ } else {
+ return -this.utcOffset();
+ }
+ }
+
+ function setOffsetToUTC (keepLocalTime) {
+ return this.utcOffset(0, keepLocalTime);
+ }
+
+ function setOffsetToLocal (keepLocalTime) {
+ if (this._isUTC) {
+ this.utcOffset(0, keepLocalTime);
+ this._isUTC = false;
+
+ if (keepLocalTime) {
+ this.subtract(getDateOffset(this), 'm');
+ }
+ }
+ return this;
+ }
+
+ function setOffsetToParsedOffset () {
+ if (this._tzm != null) {
+ this.utcOffset(this._tzm, false, true);
+ } else if (typeof this._i === 'string') {
+ var tZone = offsetFromString(matchOffset, this._i);
+ if (tZone != null) {
+ this.utcOffset(tZone);
+ }
+ else {
+ this.utcOffset(0, true);
+ }
+ }
+ return this;
+ }
+
+ function hasAlignedHourOffset (input) {
+ if (!this.isValid()) {
+ return false;
+ }
+ input = input ? createLocal(input).utcOffset() : 0;
+
+ return (this.utcOffset() - input) % 60 === 0;
+ }
+
+ function isDaylightSavingTime () {
+ return (
+ this.utcOffset() > this.clone().month(0).utcOffset() ||
+ this.utcOffset() > this.clone().month(5).utcOffset()
+ );
+ }
+
+ function isDaylightSavingTimeShifted () {
+ if (!isUndefined(this._isDSTShifted)) {
+ return this._isDSTShifted;
+ }
+
+ var c = {};
+
+ copyConfig(c, this);
+ c = prepareConfig(c);
+
+ if (c._a) {
+ var other = c._isUTC ? createUTC(c._a) : createLocal(c._a);
+ this._isDSTShifted = this.isValid() &&
+ compareArrays(c._a, other.toArray()) > 0;
+ } else {
+ this._isDSTShifted = false;
+ }
+
+ return this._isDSTShifted;
+ }
+
+ function isLocal () {
+ return this.isValid() ? !this._isUTC : false;
+ }
+
+ function isUtcOffset () {
+ return this.isValid() ? this._isUTC : false;
+ }
+
+ function isUtc () {
+ return this.isValid() ? this._isUTC && this._offset === 0 : false;
+ }
+
+ // ASP.NET json date format regex
+ var aspNetRegex = /^(\-|\+)?(?:(\d*)[. ])?(\d+)\:(\d+)(?:\:(\d+)(\.\d*)?)?$/;
+
+ // from http://docs.closure-library.googlecode.com/git/closure_goog_date_date.js.source.html
+ // somewhat more in line with 4.4.3.2 2004 spec, but allows decimal anywhere
+ // and further modified to allow for strings containing both week and day
+ var isoRegex = /^(-|\+)?P(?:([-+]?[0-9,.]*)Y)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)W)?(?:([-+]?[0-9,.]*)D)?(?:T(?:([-+]?[0-9,.]*)H)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)S)?)?$/;
+
+ function createDuration (input, key) {
+ var duration = input,
+ // matching against regexp is expensive, do it on demand
+ match = null,
+ sign,
+ ret,
+ diffRes;
+
+ if (isDuration(input)) {
+ duration = {
+ ms : input._milliseconds,
+ d : input._days,
+ M : input._months
+ };
+ } else if (isNumber(input)) {
+ duration = {};
+ if (key) {
+ duration[key] = input;
+ } else {
+ duration.milliseconds = input;
+ }
+ } else if (!!(match = aspNetRegex.exec(input))) {
+ sign = (match[1] === '-') ? -1 : 1;
+ duration = {
+ y : 0,
+ d : toInt(match[DATE]) * sign,
+ h : toInt(match[HOUR]) * sign,
+ m : toInt(match[MINUTE]) * sign,
+ s : toInt(match[SECOND]) * sign,
+ ms : toInt(absRound(match[MILLISECOND] * 1000)) * sign // the millisecond decimal point is included in the match
+ };
+ } else if (!!(match = isoRegex.exec(input))) {
+ sign = (match[1] === '-') ? -1 : 1;
+ duration = {
+ y : parseIso(match[2], sign),
+ M : parseIso(match[3], sign),
+ w : parseIso(match[4], sign),
+ d : parseIso(match[5], sign),
+ h : parseIso(match[6], sign),
+ m : parseIso(match[7], sign),
+ s : parseIso(match[8], sign)
+ };
+ } else if (duration == null) {// checks for null or undefined
+ duration = {};
+ } else if (typeof duration === 'object' && ('from' in duration || 'to' in duration)) {
+ diffRes = momentsDifference(createLocal(duration.from), createLocal(duration.to));
+
+ duration = {};
+ duration.ms = diffRes.milliseconds;
+ duration.M = diffRes.months;
+ }
+
+ ret = new Duration(duration);
+
+ if (isDuration(input) && hasOwnProp(input, '_locale')) {
+ ret._locale = input._locale;
+ }
+
+ return ret;
+ }
+
+ createDuration.fn = Duration.prototype;
+ createDuration.invalid = createInvalid$1;
+
+ function parseIso (inp, sign) {
+ // We'd normally use ~~inp for this, but unfortunately it also
+ // converts floats to ints.
+ // inp may be undefined, so careful calling replace on it.
+ var res = inp && parseFloat(inp.replace(',', '.'));
+ // apply sign while we're at it
+ return (isNaN(res) ? 0 : res) * sign;
+ }
+
+ function positiveMomentsDifference(base, other) {
+ var res = {};
+
+ res.months = other.month() - base.month() +
+ (other.year() - base.year()) * 12;
+ if (base.clone().add(res.months, 'M').isAfter(other)) {
+ --res.months;
+ }
+
+ res.milliseconds = +other - +(base.clone().add(res.months, 'M'));
+
+ return res;
+ }
+
+ function momentsDifference(base, other) {
+ var res;
+ if (!(base.isValid() && other.isValid())) {
+ return {milliseconds: 0, months: 0};
+ }
+
+ other = cloneWithOffset(other, base);
+ if (base.isBefore(other)) {
+ res = positiveMomentsDifference(base, other);
+ } else {
+ res = positiveMomentsDifference(other, base);
+ res.milliseconds = -res.milliseconds;
+ res.months = -res.months;
+ }
+
+ return res;
+ }
+
+ // TODO: remove 'name' arg after deprecation is removed
+ function createAdder(direction, name) {
+ return function (val, period) {
+ var dur, tmp;
+ //invert the arguments, but complain about it
+ if (period !== null && !isNaN(+period)) {
+ deprecateSimple(name, 'moment().' + name + '(period, number) is deprecated. Please use moment().' + name + '(number, period). ' +
+ 'See http://momentjs.com/guides/#/warnings/add-inverted-param/ for more info.');
+ tmp = val; val = period; period = tmp;
+ }
+
+ val = typeof val === 'string' ? +val : val;
+ dur = createDuration(val, period);
+ addSubtract(this, dur, direction);
+ return this;
+ };
+ }
+
+ function addSubtract (mom, duration, isAdding, updateOffset) {
+ var milliseconds = duration._milliseconds,
+ days = absRound(duration._days),
+ months = absRound(duration._months);
+
+ if (!mom.isValid()) {
+ // No op
+ return;
+ }
+
+ updateOffset = updateOffset == null ? true : updateOffset;
+
+ if (months) {
+ setMonth(mom, get(mom, 'Month') + months * isAdding);
+ }
+ if (days) {
+ set$1(mom, 'Date', get(mom, 'Date') + days * isAdding);
+ }
+ if (milliseconds) {
+ mom._d.setTime(mom._d.valueOf() + milliseconds * isAdding);
+ }
+ if (updateOffset) {
+ hooks.updateOffset(mom, days || months);
+ }
+ }
+
+ var add = createAdder(1, 'add');
+ var subtract = createAdder(-1, 'subtract');
+
+ function getCalendarFormat(myMoment, now) {
+ var diff = myMoment.diff(now, 'days', true);
+ return diff < -6 ? 'sameElse' :
+ diff < -1 ? 'lastWeek' :
+ diff < 0 ? 'lastDay' :
+ diff < 1 ? 'sameDay' :
+ diff < 2 ? 'nextDay' :
+ diff < 7 ? 'nextWeek' : 'sameElse';
+ }
+
+ function calendar$1 (time, formats) {
+ // We want to compare the start of today, vs this.
+ // Getting start-of-today depends on whether we're local/utc/offset or not.
+ var now = time || createLocal(),
+ sod = cloneWithOffset(now, this).startOf('day'),
+ format = hooks.calendarFormat(this, sod) || 'sameElse';
+
+ var output = formats && (isFunction(formats[format]) ? formats[format].call(this, now) : formats[format]);
+
+ return this.format(output || this.localeData().calendar(format, this, createLocal(now)));
+ }
+
+ function clone () {
+ return new Moment(this);
+ }
+
+ function isAfter (input, units) {
+ var localInput = isMoment(input) ? input : createLocal(input);
+ if (!(this.isValid() && localInput.isValid())) {
+ return false;
+ }
+ units = normalizeUnits(units) || 'millisecond';
+ if (units === 'millisecond') {
+ return this.valueOf() > localInput.valueOf();
+ } else {
+ return localInput.valueOf() < this.clone().startOf(units).valueOf();
+ }
+ }
+
+ function isBefore (input, units) {
+ var localInput = isMoment(input) ? input : createLocal(input);
+ if (!(this.isValid() && localInput.isValid())) {
+ return false;
+ }
+ units = normalizeUnits(units) || 'millisecond';
+ if (units === 'millisecond') {
+ return this.valueOf() < localInput.valueOf();
+ } else {
+ return this.clone().endOf(units).valueOf() < localInput.valueOf();
+ }
+ }
+
+ function isBetween (from, to, units, inclusivity) {
+ var localFrom = isMoment(from) ? from : createLocal(from),
+ localTo = isMoment(to) ? to : createLocal(to);
+ if (!(this.isValid() && localFrom.isValid() && localTo.isValid())) {
+ return false;
+ }
+ inclusivity = inclusivity || '()';
+ return (inclusivity[0] === '(' ? this.isAfter(localFrom, units) : !this.isBefore(localFrom, units)) &&
+ (inclusivity[1] === ')' ? this.isBefore(localTo, units) : !this.isAfter(localTo, units));
+ }
+
+ function isSame (input, units) {
+ var localInput = isMoment(input) ? input : createLocal(input),
+ inputMs;
+ if (!(this.isValid() && localInput.isValid())) {
+ return false;
+ }
+ units = normalizeUnits(units) || 'millisecond';
+ if (units === 'millisecond') {
+ return this.valueOf() === localInput.valueOf();
+ } else {
+ inputMs = localInput.valueOf();
+ return this.clone().startOf(units).valueOf() <= inputMs && inputMs <= this.clone().endOf(units).valueOf();
+ }
+ }
+
+ function isSameOrAfter (input, units) {
+ return this.isSame(input, units) || this.isAfter(input, units);
+ }
+
+ function isSameOrBefore (input, units) {
+ return this.isSame(input, units) || this.isBefore(input, units);
+ }
+
+ function diff (input, units, asFloat) {
+ var that,
+ zoneDelta,
+ output;
+
+ if (!this.isValid()) {
+ return NaN;
+ }
+
+ that = cloneWithOffset(input, this);
+
+ if (!that.isValid()) {
+ return NaN;
+ }
+
+ zoneDelta = (that.utcOffset() - this.utcOffset()) * 6e4;
+
+ units = normalizeUnits(units);
+
+ switch (units) {
+ case 'year': output = monthDiff(this, that) / 12; break;
+ case 'month': output = monthDiff(this, that); break;
+ case 'quarter': output = monthDiff(this, that) / 3; break;
+ case 'second': output = (this - that) / 1e3; break; // 1000
+ case 'minute': output = (this - that) / 6e4; break; // 1000 * 60
+ case 'hour': output = (this - that) / 36e5; break; // 1000 * 60 * 60
+ case 'day': output = (this - that - zoneDelta) / 864e5; break; // 1000 * 60 * 60 * 24, negate dst
+ case 'week': output = (this - that - zoneDelta) / 6048e5; break; // 1000 * 60 * 60 * 24 * 7, negate dst
+ default: output = this - that;
+ }
+
+ return asFloat ? output : absFloor(output);
+ }
+
+ function monthDiff (a, b) {
+ // difference in months
+ var wholeMonthDiff = ((b.year() - a.year()) * 12) + (b.month() - a.month()),
+ // b is in (anchor - 1 month, anchor + 1 month)
+ anchor = a.clone().add(wholeMonthDiff, 'months'),
+ anchor2, adjust;
+
+ if (b - anchor < 0) {
+ anchor2 = a.clone().add(wholeMonthDiff - 1, 'months');
+ // linear across the month
+ adjust = (b - anchor) / (anchor - anchor2);
+ } else {
+ anchor2 = a.clone().add(wholeMonthDiff + 1, 'months');
+ // linear across the month
+ adjust = (b - anchor) / (anchor2 - anchor);
+ }
+
+ //check for negative zero, return zero if negative zero
+ return -(wholeMonthDiff + adjust) || 0;
+ }
+
+ hooks.defaultFormat = 'YYYY-MM-DDTHH:mm:ssZ';
+ hooks.defaultFormatUtc = 'YYYY-MM-DDTHH:mm:ss[Z]';
+
+ function toString () {
+ return this.clone().locale('en').format('ddd MMM DD YYYY HH:mm:ss [GMT]ZZ');
+ }
+
+ function toISOString(keepOffset) {
+ if (!this.isValid()) {
+ return null;
+ }
+ var utc = keepOffset !== true;
+ var m = utc ? this.clone().utc() : this;
+ if (m.year() < 0 || m.year() > 9999) {
+ return formatMoment(m, utc ? 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]' : 'YYYYYY-MM-DD[T]HH:mm:ss.SSSZ');
+ }
+ if (isFunction(Date.prototype.toISOString)) {
+ // native implementation is ~50x faster, use it when we can
+ if (utc) {
+ return this.toDate().toISOString();
+ } else {
+ return new Date(this.valueOf() + this.utcOffset() * 60 * 1000).toISOString().replace('Z', formatMoment(m, 'Z'));
+ }
+ }
+ return formatMoment(m, utc ? 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]' : 'YYYY-MM-DD[T]HH:mm:ss.SSSZ');
+ }
+
+ /**
+ * Return a human readable representation of a moment that can
+ * also be evaluated to get a new moment which is the same
+ *
+ * @link https://nodejs.org/dist/latest/docs/api/util.html#util_custom_inspect_function_on_objects
+ */
+ function inspect () {
+ if (!this.isValid()) {
+ return 'moment.invalid(/* ' + this._i + ' */)';
+ }
+ var func = 'moment';
+ var zone = '';
+ if (!this.isLocal()) {
+ func = this.utcOffset() === 0 ? 'moment.utc' : 'moment.parseZone';
+ zone = 'Z';
+ }
+ var prefix = '[' + func + '("]';
+ var year = (0 <= this.year() && this.year() <= 9999) ? 'YYYY' : 'YYYYYY';
+ var datetime = '-MM-DD[T]HH:mm:ss.SSS';
+ var suffix = zone + '[")]';
+
+ return this.format(prefix + year + datetime + suffix);
+ }
+
+ function format (inputString) {
+ if (!inputString) {
+ inputString = this.isUtc() ? hooks.defaultFormatUtc : hooks.defaultFormat;
+ }
+ var output = formatMoment(this, inputString);
+ return this.localeData().postformat(output);
+ }
+
+ function from (time, withoutSuffix) {
+ if (this.isValid() &&
+ ((isMoment(time) && time.isValid()) ||
+ createLocal(time).isValid())) {
+ return createDuration({to: this, from: time}).locale(this.locale()).humanize(!withoutSuffix);
+ } else {
+ return this.localeData().invalidDate();
+ }
+ }
+
+ function fromNow (withoutSuffix) {
+ return this.from(createLocal(), withoutSuffix);
+ }
+
+ function to (time, withoutSuffix) {
+ if (this.isValid() &&
+ ((isMoment(time) && time.isValid()) ||
+ createLocal(time).isValid())) {
+ return createDuration({from: this, to: time}).locale(this.locale()).humanize(!withoutSuffix);
+ } else {
+ return this.localeData().invalidDate();
+ }
+ }
+
+ function toNow (withoutSuffix) {
+ return this.to(createLocal(), withoutSuffix);
+ }
+
+ // If passed a locale key, it will set the locale for this
+ // instance. Otherwise, it will return the locale configuration
+ // variables for this instance.
+ function locale (key) {
+ var newLocaleData;
+
+ if (key === undefined) {
+ return this._locale._abbr;
+ } else {
+ newLocaleData = getLocale(key);
+ if (newLocaleData != null) {
+ this._locale = newLocaleData;
+ }
+ return this;
+ }
+ }
+
+ var lang = deprecate(
+ 'moment().lang() is deprecated. Instead, use moment().localeData() to get the language configuration. Use moment().locale() to change languages.',
+ function (key) {
+ if (key === undefined) {
+ return this.localeData();
+ } else {
+ return this.locale(key);
+ }
+ }
+ );
+
+ function localeData () {
+ return this._locale;
+ }
+
+ var MS_PER_SECOND = 1000;
+ var MS_PER_MINUTE = 60 * MS_PER_SECOND;
+ var MS_PER_HOUR = 60 * MS_PER_MINUTE;
+ var MS_PER_400_YEARS = (365 * 400 + 97) * 24 * MS_PER_HOUR;
+
+ // actual modulo - handles negative numbers (for dates before 1970):
+ function mod$1(dividend, divisor) {
+ return (dividend % divisor + divisor) % divisor;
+ }
+
+ function localStartOfDate(y, m, d) {
+ // the date constructor remaps years 0-99 to 1900-1999
+ if (y < 100 && y >= 0) {
+ // preserve leap years using a full 400 year cycle, then reset
+ return new Date(y + 400, m, d) - MS_PER_400_YEARS;
+ } else {
+ return new Date(y, m, d).valueOf();
+ }
+ }
+
+ function utcStartOfDate(y, m, d) {
+ // Date.UTC remaps years 0-99 to 1900-1999
+ if (y < 100 && y >= 0) {
+ // preserve leap years using a full 400 year cycle, then reset
+ return Date.UTC(y + 400, m, d) - MS_PER_400_YEARS;
+ } else {
+ return Date.UTC(y, m, d);
+ }
+ }
+
+ function startOf (units) {
+ var time;
+ units = normalizeUnits(units);
+ if (units === undefined || units === 'millisecond' || !this.isValid()) {
+ return this;
+ }
+
+ var startOfDate = this._isUTC ? utcStartOfDate : localStartOfDate;
+
+ switch (units) {
+ case 'year':
+ time = startOfDate(this.year(), 0, 1);
+ break;
+ case 'quarter':
+ time = startOfDate(this.year(), this.month() - this.month() % 3, 1);
+ break;
+ case 'month':
+ time = startOfDate(this.year(), this.month(), 1);
+ break;
+ case 'week':
+ time = startOfDate(this.year(), this.month(), this.date() - this.weekday());
+ break;
+ case 'isoWeek':
+ time = startOfDate(this.year(), this.month(), this.date() - (this.isoWeekday() - 1));
+ break;
+ case 'day':
+ case 'date':
+ time = startOfDate(this.year(), this.month(), this.date());
+ break;
+ case 'hour':
+ time = this._d.valueOf();
+ time -= mod$1(time + (this._isUTC ? 0 : this.utcOffset() * MS_PER_MINUTE), MS_PER_HOUR);
+ break;
+ case 'minute':
+ time = this._d.valueOf();
+ time -= mod$1(time, MS_PER_MINUTE);
+ break;
+ case 'second':
+ time = this._d.valueOf();
+ time -= mod$1(time, MS_PER_SECOND);
+ break;
+ }
+
+ this._d.setTime(time);
+ hooks.updateOffset(this, true);
+ return this;
+ }
+
+ function endOf (units) {
+ var time;
+ units = normalizeUnits(units);
+ if (units === undefined || units === 'millisecond' || !this.isValid()) {
+ return this;
+ }
+
+ var startOfDate = this._isUTC ? utcStartOfDate : localStartOfDate;
+
+ switch (units) {
+ case 'year':
+ time = startOfDate(this.year() + 1, 0, 1) - 1;
+ break;
+ case 'quarter':
+ time = startOfDate(this.year(), this.month() - this.month() % 3 + 3, 1) - 1;
+ break;
+ case 'month':
+ time = startOfDate(this.year(), this.month() + 1, 1) - 1;
+ break;
+ case 'week':
+ time = startOfDate(this.year(), this.month(), this.date() - this.weekday() + 7) - 1;
+ break;
+ case 'isoWeek':
+ time = startOfDate(this.year(), this.month(), this.date() - (this.isoWeekday() - 1) + 7) - 1;
+ break;
+ case 'day':
+ case 'date':
+ time = startOfDate(this.year(), this.month(), this.date() + 1) - 1;
+ break;
+ case 'hour':
+ time = this._d.valueOf();
+ time += MS_PER_HOUR - mod$1(time + (this._isUTC ? 0 : this.utcOffset() * MS_PER_MINUTE), MS_PER_HOUR) - 1;
+ break;
+ case 'minute':
+ time = this._d.valueOf();
+ time += MS_PER_MINUTE - mod$1(time, MS_PER_MINUTE) - 1;
+ break;
+ case 'second':
+ time = this._d.valueOf();
+ time += MS_PER_SECOND - mod$1(time, MS_PER_SECOND) - 1;
+ break;
+ }
+
+ this._d.setTime(time);
+ hooks.updateOffset(this, true);
+ return this;
+ }
+
+ function valueOf () {
+ return this._d.valueOf() - ((this._offset || 0) * 60000);
+ }
+
+ function unix () {
+ return Math.floor(this.valueOf() / 1000);
+ }
+
+ function toDate () {
+ return new Date(this.valueOf());
+ }
+
+ function toArray () {
+ var m = this;
+ return [m.year(), m.month(), m.date(), m.hour(), m.minute(), m.second(), m.millisecond()];
+ }
+
+ function toObject () {
+ var m = this;
+ return {
+ years: m.year(),
+ months: m.month(),
+ date: m.date(),
+ hours: m.hours(),
+ minutes: m.minutes(),
+ seconds: m.seconds(),
+ milliseconds: m.milliseconds()
+ };
+ }
+
+ function toJSON () {
+ // new Date(NaN).toJSON() === null
+ return this.isValid() ? this.toISOString() : null;
+ }
+
+ function isValid$2 () {
+ return isValid(this);
+ }
+
+ function parsingFlags () {
+ return extend({}, getParsingFlags(this));
+ }
+
+ function invalidAt () {
+ return getParsingFlags(this).overflow;
+ }
+
+ function creationData() {
+ return {
+ input: this._i,
+ format: this._f,
+ locale: this._locale,
+ isUTC: this._isUTC,
+ strict: this._strict
+ };
+ }
+
+ // FORMATTING
+
+ addFormatToken(0, ['gg', 2], 0, function () {
+ return this.weekYear() % 100;
+ });
+
+ addFormatToken(0, ['GG', 2], 0, function () {
+ return this.isoWeekYear() % 100;
+ });
+
+ function addWeekYearFormatToken (token, getter) {
+ addFormatToken(0, [token, token.length], 0, getter);
+ }
+
+ addWeekYearFormatToken('gggg', 'weekYear');
+ addWeekYearFormatToken('ggggg', 'weekYear');
+ addWeekYearFormatToken('GGGG', 'isoWeekYear');
+ addWeekYearFormatToken('GGGGG', 'isoWeekYear');
+
+ // ALIASES
+
+ addUnitAlias('weekYear', 'gg');
+ addUnitAlias('isoWeekYear', 'GG');
+
+ // PRIORITY
+
+ addUnitPriority('weekYear', 1);
+ addUnitPriority('isoWeekYear', 1);
+
+
+ // PARSING
+
+ addRegexToken('G', matchSigned);
+ addRegexToken('g', matchSigned);
+ addRegexToken('GG', match1to2, match2);
+ addRegexToken('gg', match1to2, match2);
+ addRegexToken('GGGG', match1to4, match4);
+ addRegexToken('gggg', match1to4, match4);
+ addRegexToken('GGGGG', match1to6, match6);
+ addRegexToken('ggggg', match1to6, match6);
+
+ addWeekParseToken(['gggg', 'ggggg', 'GGGG', 'GGGGG'], function (input, week, config, token) {
+ week[token.substr(0, 2)] = toInt(input);
+ });
+
+ addWeekParseToken(['gg', 'GG'], function (input, week, config, token) {
+ week[token] = hooks.parseTwoDigitYear(input);
+ });
+
+ // MOMENTS
+
+ function getSetWeekYear (input) {
+ return getSetWeekYearHelper.call(this,
+ input,
+ this.week(),
+ this.weekday(),
+ this.localeData()._week.dow,
+ this.localeData()._week.doy);
+ }
+
+ function getSetISOWeekYear (input) {
+ return getSetWeekYearHelper.call(this,
+ input, this.isoWeek(), this.isoWeekday(), 1, 4);
+ }
+
+ function getISOWeeksInYear () {
+ return weeksInYear(this.year(), 1, 4);
+ }
+
+ function getWeeksInYear () {
+ var weekInfo = this.localeData()._week;
+ return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);
+ }
+
+ function getSetWeekYearHelper(input, week, weekday, dow, doy) {
+ var weeksTarget;
+ if (input == null) {
+ return weekOfYear(this, dow, doy).year;
+ } else {
+ weeksTarget = weeksInYear(input, dow, doy);
+ if (week > weeksTarget) {
+ week = weeksTarget;
+ }
+ return setWeekAll.call(this, input, week, weekday, dow, doy);
+ }
+ }
+
+ function setWeekAll(weekYear, week, weekday, dow, doy) {
+ var dayOfYearData = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy),
+ date = createUTCDate(dayOfYearData.year, 0, dayOfYearData.dayOfYear);
+
+ this.year(date.getUTCFullYear());
+ this.month(date.getUTCMonth());
+ this.date(date.getUTCDate());
+ return this;
+ }
+
+ // FORMATTING
+
+ addFormatToken('Q', 0, 'Qo', 'quarter');
+
+ // ALIASES
+
+ addUnitAlias('quarter', 'Q');
+
+ // PRIORITY
+
+ addUnitPriority('quarter', 7);
+
+ // PARSING
+
+ addRegexToken('Q', match1);
+ addParseToken('Q', function (input, array) {
+ array[MONTH] = (toInt(input) - 1) * 3;
+ });
+
+ // MOMENTS
+
+ function getSetQuarter (input) {
+ return input == null ? Math.ceil((this.month() + 1) / 3) : this.month((input - 1) * 3 + this.month() % 3);
+ }
+
+ // FORMATTING
+
+ addFormatToken('D', ['DD', 2], 'Do', 'date');
+
+ // ALIASES
+
+ addUnitAlias('date', 'D');
+
+ // PRIORITY
+ addUnitPriority('date', 9);
+
+ // PARSING
+
+ addRegexToken('D', match1to2);
+ addRegexToken('DD', match1to2, match2);
+ addRegexToken('Do', function (isStrict, locale) {
+ // TODO: Remove "ordinalParse" fallback in next major release.
+ return isStrict ?
+ (locale._dayOfMonthOrdinalParse || locale._ordinalParse) :
+ locale._dayOfMonthOrdinalParseLenient;
+ });
+
+ addParseToken(['D', 'DD'], DATE);
+ addParseToken('Do', function (input, array) {
+ array[DATE] = toInt(input.match(match1to2)[0]);
+ });
+
+ // MOMENTS
+
+ var getSetDayOfMonth = makeGetSet('Date', true);
+
+ // FORMATTING
+
+ addFormatToken('DDD', ['DDDD', 3], 'DDDo', 'dayOfYear');
+
+ // ALIASES
+
+ addUnitAlias('dayOfYear', 'DDD');
+
+ // PRIORITY
+ addUnitPriority('dayOfYear', 4);
+
+ // PARSING
+
+ addRegexToken('DDD', match1to3);
+ addRegexToken('DDDD', match3);
+ addParseToken(['DDD', 'DDDD'], function (input, array, config) {
+ config._dayOfYear = toInt(input);
+ });
+
+ // HELPERS
+
+ // MOMENTS
+
+ function getSetDayOfYear (input) {
+ var dayOfYear = Math.round((this.clone().startOf('day') - this.clone().startOf('year')) / 864e5) + 1;
+ return input == null ? dayOfYear : this.add((input - dayOfYear), 'd');
+ }
+
+ // FORMATTING
+
+ addFormatToken('m', ['mm', 2], 0, 'minute');
+
+ // ALIASES
+
+ addUnitAlias('minute', 'm');
+
+ // PRIORITY
+
+ addUnitPriority('minute', 14);
+
+ // PARSING
+
+ addRegexToken('m', match1to2);
+ addRegexToken('mm', match1to2, match2);
+ addParseToken(['m', 'mm'], MINUTE);
+
+ // MOMENTS
+
+ var getSetMinute = makeGetSet('Minutes', false);
+
+ // FORMATTING
+
+ addFormatToken('s', ['ss', 2], 0, 'second');
+
+ // ALIASES
+
+ addUnitAlias('second', 's');
+
+ // PRIORITY
+
+ addUnitPriority('second', 15);
+
+ // PARSING
+
+ addRegexToken('s', match1to2);
+ addRegexToken('ss', match1to2, match2);
+ addParseToken(['s', 'ss'], SECOND);
+
+ // MOMENTS
+
+ var getSetSecond = makeGetSet('Seconds', false);
+
+ // FORMATTING
+
+ addFormatToken('S', 0, 0, function () {
+ return ~~(this.millisecond() / 100);
+ });
+
+ addFormatToken(0, ['SS', 2], 0, function () {
+ return ~~(this.millisecond() / 10);
+ });
+
+ addFormatToken(0, ['SSS', 3], 0, 'millisecond');
+ addFormatToken(0, ['SSSS', 4], 0, function () {
+ return this.millisecond() * 10;
+ });
+ addFormatToken(0, ['SSSSS', 5], 0, function () {
+ return this.millisecond() * 100;
+ });
+ addFormatToken(0, ['SSSSSS', 6], 0, function () {
+ return this.millisecond() * 1000;
+ });
+ addFormatToken(0, ['SSSSSSS', 7], 0, function () {
+ return this.millisecond() * 10000;
+ });
+ addFormatToken(0, ['SSSSSSSS', 8], 0, function () {
+ return this.millisecond() * 100000;
+ });
+ addFormatToken(0, ['SSSSSSSSS', 9], 0, function () {
+ return this.millisecond() * 1000000;
+ });
+
+
+ // ALIASES
+
+ addUnitAlias('millisecond', 'ms');
+
+ // PRIORITY
+
+ addUnitPriority('millisecond', 16);
+
+ // PARSING
+
+ addRegexToken('S', match1to3, match1);
+ addRegexToken('SS', match1to3, match2);
+ addRegexToken('SSS', match1to3, match3);
+
+ var token;
+ for (token = 'SSSS'; token.length <= 9; token += 'S') {
+ addRegexToken(token, matchUnsigned);
+ }
+
+ function parseMs(input, array) {
+ array[MILLISECOND] = toInt(('0.' + input) * 1000);
+ }
+
+ for (token = 'S'; token.length <= 9; token += 'S') {
+ addParseToken(token, parseMs);
+ }
+ // MOMENTS
+
+ var getSetMillisecond = makeGetSet('Milliseconds', false);
+
+ // FORMATTING
+
+ addFormatToken('z', 0, 0, 'zoneAbbr');
+ addFormatToken('zz', 0, 0, 'zoneName');
+
+ // MOMENTS
+
+ function getZoneAbbr () {
+ return this._isUTC ? 'UTC' : '';
+ }
+
+ function getZoneName () {
+ return this._isUTC ? 'Coordinated Universal Time' : '';
+ }
+
+ var proto = Moment.prototype;
+
+ proto.add = add;
+ proto.calendar = calendar$1;
+ proto.clone = clone;
+ proto.diff = diff;
+ proto.endOf = endOf;
+ proto.format = format;
+ proto.from = from;
+ proto.fromNow = fromNow;
+ proto.to = to;
+ proto.toNow = toNow;
+ proto.get = stringGet;
+ proto.invalidAt = invalidAt;
+ proto.isAfter = isAfter;
+ proto.isBefore = isBefore;
+ proto.isBetween = isBetween;
+ proto.isSame = isSame;
+ proto.isSameOrAfter = isSameOrAfter;
+ proto.isSameOrBefore = isSameOrBefore;
+ proto.isValid = isValid$2;
+ proto.lang = lang;
+ proto.locale = locale;
+ proto.localeData = localeData;
+ proto.max = prototypeMax;
+ proto.min = prototypeMin;
+ proto.parsingFlags = parsingFlags;
+ proto.set = stringSet;
+ proto.startOf = startOf;
+ proto.subtract = subtract;
+ proto.toArray = toArray;
+ proto.toObject = toObject;
+ proto.toDate = toDate;
+ proto.toISOString = toISOString;
+ proto.inspect = inspect;
+ proto.toJSON = toJSON;
+ proto.toString = toString;
+ proto.unix = unix;
+ proto.valueOf = valueOf;
+ proto.creationData = creationData;
+ proto.year = getSetYear;
+ proto.isLeapYear = getIsLeapYear;
+ proto.weekYear = getSetWeekYear;
+ proto.isoWeekYear = getSetISOWeekYear;
+ proto.quarter = proto.quarters = getSetQuarter;
+ proto.month = getSetMonth;
+ proto.daysInMonth = getDaysInMonth;
+ proto.week = proto.weeks = getSetWeek;
+ proto.isoWeek = proto.isoWeeks = getSetISOWeek;
+ proto.weeksInYear = getWeeksInYear;
+ proto.isoWeeksInYear = getISOWeeksInYear;
+ proto.date = getSetDayOfMonth;
+ proto.day = proto.days = getSetDayOfWeek;
+ proto.weekday = getSetLocaleDayOfWeek;
+ proto.isoWeekday = getSetISODayOfWeek;
+ proto.dayOfYear = getSetDayOfYear;
+ proto.hour = proto.hours = getSetHour;
+ proto.minute = proto.minutes = getSetMinute;
+ proto.second = proto.seconds = getSetSecond;
+ proto.millisecond = proto.milliseconds = getSetMillisecond;
+ proto.utcOffset = getSetOffset;
+ proto.utc = setOffsetToUTC;
+ proto.local = setOffsetToLocal;
+ proto.parseZone = setOffsetToParsedOffset;
+ proto.hasAlignedHourOffset = hasAlignedHourOffset;
+ proto.isDST = isDaylightSavingTime;
+ proto.isLocal = isLocal;
+ proto.isUtcOffset = isUtcOffset;
+ proto.isUtc = isUtc;
+ proto.isUTC = isUtc;
+ proto.zoneAbbr = getZoneAbbr;
+ proto.zoneName = getZoneName;
+ proto.dates = deprecate('dates accessor is deprecated. Use date instead.', getSetDayOfMonth);
+ proto.months = deprecate('months accessor is deprecated. Use month instead', getSetMonth);
+ proto.years = deprecate('years accessor is deprecated. Use year instead', getSetYear);
+ proto.zone = deprecate('moment().zone is deprecated, use moment().utcOffset instead. http://momentjs.com/guides/#/warnings/zone/', getSetZone);
+ proto.isDSTShifted = deprecate('isDSTShifted is deprecated. See http://momentjs.com/guides/#/warnings/dst-shifted/ for more information', isDaylightSavingTimeShifted);
+
+ function createUnix (input) {
+ return createLocal(input * 1000);
+ }
+
+ function createInZone () {
+ return createLocal.apply(null, arguments).parseZone();
+ }
+
+ function preParsePostFormat (string) {
+ return string;
+ }
+
+ var proto$1 = Locale.prototype;
+
+ proto$1.calendar = calendar;
+ proto$1.longDateFormat = longDateFormat;
+ proto$1.invalidDate = invalidDate;
+ proto$1.ordinal = ordinal;
+ proto$1.preparse = preParsePostFormat;
+ proto$1.postformat = preParsePostFormat;
+ proto$1.relativeTime = relativeTime;
+ proto$1.pastFuture = pastFuture;
+ proto$1.set = set;
+
+ proto$1.months = localeMonths;
+ proto$1.monthsShort = localeMonthsShort;
+ proto$1.monthsParse = localeMonthsParse;
+ proto$1.monthsRegex = monthsRegex;
+ proto$1.monthsShortRegex = monthsShortRegex;
+ proto$1.week = localeWeek;
+ proto$1.firstDayOfYear = localeFirstDayOfYear;
+ proto$1.firstDayOfWeek = localeFirstDayOfWeek;
+
+ proto$1.weekdays = localeWeekdays;
+ proto$1.weekdaysMin = localeWeekdaysMin;
+ proto$1.weekdaysShort = localeWeekdaysShort;
+ proto$1.weekdaysParse = localeWeekdaysParse;
+
+ proto$1.weekdaysRegex = weekdaysRegex;
+ proto$1.weekdaysShortRegex = weekdaysShortRegex;
+ proto$1.weekdaysMinRegex = weekdaysMinRegex;
+
+ proto$1.isPM = localeIsPM;
+ proto$1.meridiem = localeMeridiem;
+
+ function get$1 (format, index, field, setter) {
+ var locale = getLocale();
+ var utc = createUTC().set(setter, index);
+ return locale[field](utc, format);
+ }
+
+ function listMonthsImpl (format, index, field) {
+ if (isNumber(format)) {
+ index = format;
+ format = undefined;
+ }
+
+ format = format || '';
+
+ if (index != null) {
+ return get$1(format, index, field, 'month');
+ }
+
+ var i;
+ var out = [];
+ for (i = 0; i < 12; i++) {
+ out[i] = get$1(format, i, field, 'month');
+ }
+ return out;
+ }
+
+ // ()
+ // (5)
+ // (fmt, 5)
+ // (fmt)
+ // (true)
+ // (true, 5)
+ // (true, fmt, 5)
+ // (true, fmt)
+ function listWeekdaysImpl (localeSorted, format, index, field) {
+ if (typeof localeSorted === 'boolean') {
+ if (isNumber(format)) {
+ index = format;
+ format = undefined;
+ }
+
+ format = format || '';
+ } else {
+ format = localeSorted;
+ index = format;
+ localeSorted = false;
+
+ if (isNumber(format)) {
+ index = format;
+ format = undefined;
+ }
+
+ format = format || '';
+ }
+
+ var locale = getLocale(),
+ shift = localeSorted ? locale._week.dow : 0;
+
+ if (index != null) {
+ return get$1(format, (index + shift) % 7, field, 'day');
+ }
+
+ var i;
+ var out = [];
+ for (i = 0; i < 7; i++) {
+ out[i] = get$1(format, (i + shift) % 7, field, 'day');
+ }
+ return out;
+ }
+
+ function listMonths (format, index) {
+ return listMonthsImpl(format, index, 'months');
+ }
+
+ function listMonthsShort (format, index) {
+ return listMonthsImpl(format, index, 'monthsShort');
+ }
+
+ function listWeekdays (localeSorted, format, index) {
+ return listWeekdaysImpl(localeSorted, format, index, 'weekdays');
+ }
+
+ function listWeekdaysShort (localeSorted, format, index) {
+ return listWeekdaysImpl(localeSorted, format, index, 'weekdaysShort');
+ }
+
+ function listWeekdaysMin (localeSorted, format, index) {
+ return listWeekdaysImpl(localeSorted, format, index, 'weekdaysMin');
+ }
+
+ getSetGlobalLocale('en', {
+ dayOfMonthOrdinalParse: /\d{1,2}(th|st|nd|rd)/,
+ ordinal : function (number) {
+ var b = number % 10,
+ output = (toInt(number % 100 / 10) === 1) ? 'th' :
+ (b === 1) ? 'st' :
+ (b === 2) ? 'nd' :
+ (b === 3) ? 'rd' : 'th';
+ return number + output;
+ }
+ });
+
+ // Side effect imports
+
+ hooks.lang = deprecate('moment.lang is deprecated. Use moment.locale instead.', getSetGlobalLocale);
+ hooks.langData = deprecate('moment.langData is deprecated. Use moment.localeData instead.', getLocale);
+
+ var mathAbs = Math.abs;
+
+ function abs () {
+ var data = this._data;
+
+ this._milliseconds = mathAbs(this._milliseconds);
+ this._days = mathAbs(this._days);
+ this._months = mathAbs(this._months);
+
+ data.milliseconds = mathAbs(data.milliseconds);
+ data.seconds = mathAbs(data.seconds);
+ data.minutes = mathAbs(data.minutes);
+ data.hours = mathAbs(data.hours);
+ data.months = mathAbs(data.months);
+ data.years = mathAbs(data.years);
+
+ return this;
+ }
+
+ function addSubtract$1 (duration, input, value, direction) {
+ var other = createDuration(input, value);
+
+ duration._milliseconds += direction * other._milliseconds;
+ duration._days += direction * other._days;
+ duration._months += direction * other._months;
+
+ return duration._bubble();
+ }
+
+ // supports only 2.0-style add(1, 's') or add(duration)
+ function add$1 (input, value) {
+ return addSubtract$1(this, input, value, 1);
+ }
+
+ // supports only 2.0-style subtract(1, 's') or subtract(duration)
+ function subtract$1 (input, value) {
+ return addSubtract$1(this, input, value, -1);
+ }
+
+ function absCeil (number) {
+ if (number < 0) {
+ return Math.floor(number);
+ } else {
+ return Math.ceil(number);
+ }
+ }
+
+ function bubble () {
+ var milliseconds = this._milliseconds;
+ var days = this._days;
+ var months = this._months;
+ var data = this._data;
+ var seconds, minutes, hours, years, monthsFromDays;
+
+ // if we have a mix of positive and negative values, bubble down first
+ // check: https://github.com/moment/moment/issues/2166
+ if (!((milliseconds >= 0 && days >= 0 && months >= 0) ||
+ (milliseconds <= 0 && days <= 0 && months <= 0))) {
+ milliseconds += absCeil(monthsToDays(months) + days) * 864e5;
+ days = 0;
+ months = 0;
+ }
+
+ // The following code bubbles up values, see the tests for
+ // examples of what that means.
+ data.milliseconds = milliseconds % 1000;
+
+ seconds = absFloor(milliseconds / 1000);
+ data.seconds = seconds % 60;
+
+ minutes = absFloor(seconds / 60);
+ data.minutes = minutes % 60;
+
+ hours = absFloor(minutes / 60);
+ data.hours = hours % 24;
+
+ days += absFloor(hours / 24);
+
+ // convert days to months
+ monthsFromDays = absFloor(daysToMonths(days));
+ months += monthsFromDays;
+ days -= absCeil(monthsToDays(monthsFromDays));
+
+ // 12 months -> 1 year
+ years = absFloor(months / 12);
+ months %= 12;
+
+ data.days = days;
+ data.months = months;
+ data.years = years;
+
+ return this;
+ }
+
+ function daysToMonths (days) {
+ // 400 years have 146097 days (taking into account leap year rules)
+ // 400 years have 12 months === 4800
+ return days * 4800 / 146097;
+ }
+
+ function monthsToDays (months) {
+ // the reverse of daysToMonths
+ return months * 146097 / 4800;
+ }
+
+ function as (units) {
+ if (!this.isValid()) {
+ return NaN;
+ }
+ var days;
+ var months;
+ var milliseconds = this._milliseconds;
+
+ units = normalizeUnits(units);
+
+ if (units === 'month' || units === 'quarter' || units === 'year') {
+ days = this._days + milliseconds / 864e5;
+ months = this._months + daysToMonths(days);
+ switch (units) {
+ case 'month': return months;
+ case 'quarter': return months / 3;
+ case 'year': return months / 12;
+ }
+ } else {
+ // handle milliseconds separately because of floating point math errors (issue #1867)
+ days = this._days + Math.round(monthsToDays(this._months));
+ switch (units) {
+ case 'week' : return days / 7 + milliseconds / 6048e5;
+ case 'day' : return days + milliseconds / 864e5;
+ case 'hour' : return days * 24 + milliseconds / 36e5;
+ case 'minute' : return days * 1440 + milliseconds / 6e4;
+ case 'second' : return days * 86400 + milliseconds / 1000;
+ // Math.floor prevents floating point math errors here
+ case 'millisecond': return Math.floor(days * 864e5) + milliseconds;
+ default: throw new Error('Unknown unit ' + units);
+ }
+ }
+ }
+
+ // TODO: Use this.as('ms')?
+ function valueOf$1 () {
+ if (!this.isValid()) {
+ return NaN;
+ }
+ return (
+ this._milliseconds +
+ this._days * 864e5 +
+ (this._months % 12) * 2592e6 +
+ toInt(this._months / 12) * 31536e6
+ );
+ }
+
+ function makeAs (alias) {
+ return function () {
+ return this.as(alias);
+ };
+ }
+
+ var asMilliseconds = makeAs('ms');
+ var asSeconds = makeAs('s');
+ var asMinutes = makeAs('m');
+ var asHours = makeAs('h');
+ var asDays = makeAs('d');
+ var asWeeks = makeAs('w');
+ var asMonths = makeAs('M');
+ var asQuarters = makeAs('Q');
+ var asYears = makeAs('y');
+
+ function clone$1 () {
+ return createDuration(this);
+ }
+
+ function get$2 (units) {
+ units = normalizeUnits(units);
+ return this.isValid() ? this[units + 's']() : NaN;
+ }
+
+ function makeGetter(name) {
+ return function () {
+ return this.isValid() ? this._data[name] : NaN;
+ };
+ }
+
+ var milliseconds = makeGetter('milliseconds');
+ var seconds = makeGetter('seconds');
+ var minutes = makeGetter('minutes');
+ var hours = makeGetter('hours');
+ var days = makeGetter('days');
+ var months = makeGetter('months');
+ var years = makeGetter('years');
+
+ function weeks () {
+ return absFloor(this.days() / 7);
+ }
+
+ var round = Math.round;
+ var thresholds = {
+ ss: 44, // a few seconds to seconds
+ s : 45, // seconds to minute
+ m : 45, // minutes to hour
+ h : 22, // hours to day
+ d : 26, // days to month
+ M : 11 // months to year
+ };
+
+ // helper function for moment.fn.from, moment.fn.fromNow, and moment.duration.fn.humanize
+ function substituteTimeAgo(string, number, withoutSuffix, isFuture, locale) {
+ return locale.relativeTime(number || 1, !!withoutSuffix, string, isFuture);
+ }
+
+ function relativeTime$1 (posNegDuration, withoutSuffix, locale) {
+ var duration = createDuration(posNegDuration).abs();
+ var seconds = round(duration.as('s'));
+ var minutes = round(duration.as('m'));
+ var hours = round(duration.as('h'));
+ var days = round(duration.as('d'));
+ var months = round(duration.as('M'));
+ var years = round(duration.as('y'));
+
+ var a = seconds <= thresholds.ss && ['s', seconds] ||
+ seconds < thresholds.s && ['ss', seconds] ||
+ minutes <= 1 && ['m'] ||
+ minutes < thresholds.m && ['mm', minutes] ||
+ hours <= 1 && ['h'] ||
+ hours < thresholds.h && ['hh', hours] ||
+ days <= 1 && ['d'] ||
+ days < thresholds.d && ['dd', days] ||
+ months <= 1 && ['M'] ||
+ months < thresholds.M && ['MM', months] ||
+ years <= 1 && ['y'] || ['yy', years];
+
+ a[2] = withoutSuffix;
+ a[3] = +posNegDuration > 0;
+ a[4] = locale;
+ return substituteTimeAgo.apply(null, a);
+ }
+
+ // This function allows you to set the rounding function for relative time strings
+ function getSetRelativeTimeRounding (roundingFunction) {
+ if (roundingFunction === undefined) {
+ return round;
+ }
+ if (typeof(roundingFunction) === 'function') {
+ round = roundingFunction;
+ return true;
+ }
+ return false;
+ }
+
+ // This function allows you to set a threshold for relative time strings
+ function getSetRelativeTimeThreshold (threshold, limit) {
+ if (thresholds[threshold] === undefined) {
+ return false;
+ }
+ if (limit === undefined) {
+ return thresholds[threshold];
+ }
+ thresholds[threshold] = limit;
+ if (threshold === 's') {
+ thresholds.ss = limit - 1;
+ }
+ return true;
+ }
+
+ function humanize (withSuffix) {
+ if (!this.isValid()) {
+ return this.localeData().invalidDate();
+ }
+
+ var locale = this.localeData();
+ var output = relativeTime$1(this, !withSuffix, locale);
+
+ if (withSuffix) {
+ output = locale.pastFuture(+this, output);
+ }
+
+ return locale.postformat(output);
+ }
+
+ var abs$1 = Math.abs;
+
+ function sign(x) {
+ return ((x > 0) - (x < 0)) || +x;
+ }
+
+ function toISOString$1() {
+ // for ISO strings we do not use the normal bubbling rules:
+ // * milliseconds bubble up until they become hours
+ // * days do not bubble at all
+ // * months bubble up until they become years
+ // This is because there is no context-free conversion between hours and days
+ // (think of clock changes)
+ // and also not between days and months (28-31 days per month)
+ if (!this.isValid()) {
+ return this.localeData().invalidDate();
+ }
+
+ var seconds = abs$1(this._milliseconds) / 1000;
+ var days = abs$1(this._days);
+ var months = abs$1(this._months);
+ var minutes, hours, years;
+
+ // 3600 seconds -> 60 minutes -> 1 hour
+ minutes = absFloor(seconds / 60);
+ hours = absFloor(minutes / 60);
+ seconds %= 60;
+ minutes %= 60;
+
+ // 12 months -> 1 year
+ years = absFloor(months / 12);
+ months %= 12;
+
+
+ // inspired by https://github.com/dordille/moment-isoduration/blob/master/moment.isoduration.js
+ var Y = years;
+ var M = months;
+ var D = days;
+ var h = hours;
+ var m = minutes;
+ var s = seconds ? seconds.toFixed(3).replace(/\.?0+$/, '') : '';
+ var total = this.asSeconds();
+
+ if (!total) {
+ // this is the same as C#'s (Noda) and python (isodate)...
+ // but not other JS (goog.date)
+ return 'P0D';
+ }
+
+ var totalSign = total < 0 ? '-' : '';
+ var ymSign = sign(this._months) !== sign(total) ? '-' : '';
+ var daysSign = sign(this._days) !== sign(total) ? '-' : '';
+ var hmsSign = sign(this._milliseconds) !== sign(total) ? '-' : '';
+
+ return totalSign + 'P' +
+ (Y ? ymSign + Y + 'Y' : '') +
+ (M ? ymSign + M + 'M' : '') +
+ (D ? daysSign + D + 'D' : '') +
+ ((h || m || s) ? 'T' : '') +
+ (h ? hmsSign + h + 'H' : '') +
+ (m ? hmsSign + m + 'M' : '') +
+ (s ? hmsSign + s + 'S' : '');
+ }
+
+ var proto$2 = Duration.prototype;
+
+ proto$2.isValid = isValid$1;
+ proto$2.abs = abs;
+ proto$2.add = add$1;
+ proto$2.subtract = subtract$1;
+ proto$2.as = as;
+ proto$2.asMilliseconds = asMilliseconds;
+ proto$2.asSeconds = asSeconds;
+ proto$2.asMinutes = asMinutes;
+ proto$2.asHours = asHours;
+ proto$2.asDays = asDays;
+ proto$2.asWeeks = asWeeks;
+ proto$2.asMonths = asMonths;
+ proto$2.asQuarters = asQuarters;
+ proto$2.asYears = asYears;
+ proto$2.valueOf = valueOf$1;
+ proto$2._bubble = bubble;
+ proto$2.clone = clone$1;
+ proto$2.get = get$2;
+ proto$2.milliseconds = milliseconds;
+ proto$2.seconds = seconds;
+ proto$2.minutes = minutes;
+ proto$2.hours = hours;
+ proto$2.days = days;
+ proto$2.weeks = weeks;
+ proto$2.months = months;
+ proto$2.years = years;
+ proto$2.humanize = humanize;
+ proto$2.toISOString = toISOString$1;
+ proto$2.toString = toISOString$1;
+ proto$2.toJSON = toISOString$1;
+ proto$2.locale = locale;
+ proto$2.localeData = localeData;
+
+ proto$2.toIsoString = deprecate('toIsoString() is deprecated. Please use toISOString() instead (notice the capitals)', toISOString$1);
+ proto$2.lang = lang;
+
+ // Side effect imports
+
+ // FORMATTING
+
+ addFormatToken('X', 0, 0, 'unix');
+ addFormatToken('x', 0, 0, 'valueOf');
+
+ // PARSING
+
+ addRegexToken('x', matchSigned);
+ addRegexToken('X', matchTimestamp);
+ addParseToken('X', function (input, array, config) {
+ config._d = new Date(parseFloat(input, 10) * 1000);
+ });
+ addParseToken('x', function (input, array, config) {
+ config._d = new Date(toInt(input));
+ });
+
+ // Side effect imports
+
+
+ hooks.version = '2.24.0';
+
+ setHookCallback(createLocal);
+
+ hooks.fn = proto;
+ hooks.min = min;
+ hooks.max = max;
+ hooks.now = now;
+ hooks.utc = createUTC;
+ hooks.unix = createUnix;
+ hooks.months = listMonths;
+ hooks.isDate = isDate;
+ hooks.locale = getSetGlobalLocale;
+ hooks.invalid = createInvalid;
+ hooks.duration = createDuration;
+ hooks.isMoment = isMoment;
+ hooks.weekdays = listWeekdays;
+ hooks.parseZone = createInZone;
+ hooks.localeData = getLocale;
+ hooks.isDuration = isDuration;
+ hooks.monthsShort = listMonthsShort;
+ hooks.weekdaysMin = listWeekdaysMin;
+ hooks.defineLocale = defineLocale;
+ hooks.updateLocale = updateLocale;
+ hooks.locales = listLocales;
+ hooks.weekdaysShort = listWeekdaysShort;
+ hooks.normalizeUnits = normalizeUnits;
+ hooks.relativeTimeRounding = getSetRelativeTimeRounding;
+ hooks.relativeTimeThreshold = getSetRelativeTimeThreshold;
+ hooks.calendarFormat = getCalendarFormat;
+ hooks.prototype = proto;
+
+ // currently HTML5 input type only supports 24-hour formats
+ hooks.HTML5_FMT = {
+ DATETIME_LOCAL: 'YYYY-MM-DDTHH:mm', // <input type="datetime-local" />
+ DATETIME_LOCAL_SECONDS: 'YYYY-MM-DDTHH:mm:ss', // <input type="datetime-local" step="1" />
+ DATETIME_LOCAL_MS: 'YYYY-MM-DDTHH:mm:ss.SSS', // <input type="datetime-local" step="0.001" />
+ DATE: 'YYYY-MM-DD', // <input type="date" />
+ TIME: 'HH:mm', // <input type="time" />
+ TIME_SECONDS: 'HH:mm:ss', // <input type="time" step="1" />
+ TIME_MS: 'HH:mm:ss.SSS', // <input type="time" step="0.001" />
+ WEEK: 'GGGG-[W]WW', // <input type="week" />
+ MONTH: 'YYYY-MM' // <input type="month" />
+ };
+
+ return hooks;
+
+})));
+});
+
+var FORMATS = {
+ datetime: 'MMM D, YYYY, h:mm:ss a',
+ millisecond: 'h:mm:ss.SSS a',
+ second: 'h:mm:ss a',
+ minute: 'h:mm a',
+ hour: 'hA',
+ day: 'MMM D',
+ week: 'll',
+ month: 'MMM YYYY',
+ quarter: '[Q]Q - YYYY',
+ year: 'YYYY'
+};
+
+core_adapters._date.override(typeof moment === 'function' ? {
+ _id: 'moment', // DEBUG ONLY
+
+ formats: function() {
+ return FORMATS;
+ },
+
+ parse: function(value, format) {
+ if (typeof value === 'string' && typeof format === 'string') {
+ value = moment(value, format);
+ } else if (!(value instanceof moment)) {
+ value = moment(value);
+ }
+ return value.isValid() ? value.valueOf() : null;
+ },
+
+ format: function(time, format) {
+ return moment(time).format(format);
+ },
+
+ add: function(time, amount, unit) {
+ return moment(time).add(amount, unit).valueOf();
+ },
+
+ diff: function(max, min, unit) {
+ return moment.duration(moment(max).diff(moment(min))).as(unit);
+ },
+
+ startOf: function(time, unit, weekday) {
+ time = moment(time);
+ if (unit === 'isoWeek') {
+ return time.isoWeekday(weekday).valueOf();
+ }
+ return time.startOf(unit).valueOf();
+ },
+
+ endOf: function(time, unit) {
+ return moment(time).endOf(unit).valueOf();
+ },
+
+ // DEPRECATIONS
+
+ /**
+ * Provided for backward compatibility with scale.getValueForPixel().
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+ _create: function(time) {
+ return moment(time);
+ },
+} : {});
+
+core_defaults._set('global', {
+ plugins: {
+ filler: {
+ propagate: true
+ }
+ }
+});
+
+var mappers = {
+ dataset: function(source) {
+ var index = source.fill;
+ var chart = source.chart;
+ var meta = chart.getDatasetMeta(index);
+ var visible = meta && chart.isDatasetVisible(index);
+ var points = (visible && meta.dataset._children) || [];
+ var length = points.length || 0;
+
+ return !length ? null : function(point, i) {
+ return (i < length && points[i]._view) || null;
+ };
+ },
+
+ boundary: function(source) {
+ var boundary = source.boundary;
+ var x = boundary ? boundary.x : null;
+ var y = boundary ? boundary.y : null;
+
+ return function(point) {
+ return {
+ x: x === null ? point.x : x,
+ y: y === null ? point.y : y,
+ };
+ };
+ }
+};
+
+// @todo if (fill[0] === '#')
+function decodeFill(el, index, count) {
+ var model = el._model || {};
+ var fill = model.fill;
+ var target;
+
+ if (fill === undefined) {
+ fill = !!model.backgroundColor;
+ }
+
+ if (fill === false || fill === null) {
+ return false;
+ }
+
+ if (fill === true) {
+ return 'origin';
+ }
+
+ target = parseFloat(fill, 10);
+ if (isFinite(target) && Math.floor(target) === target) {
+ if (fill[0] === '-' || fill[0] === '+') {
+ target = index + target;
+ }
+
+ if (target === index || target < 0 || target >= count) {
+ return false;
+ }
+
+ return target;
+ }
+
+ switch (fill) {
+ // compatibility
+ case 'bottom':
+ return 'start';
+ case 'top':
+ return 'end';
+ case 'zero':
+ return 'origin';
+ // supported boundaries
+ case 'origin':
+ case 'start':
+ case 'end':
+ return fill;
+ // invalid fill values
+ default:
+ return false;
+ }
+}
+
+function computeBoundary(source) {
+ var model = source.el._model || {};
+ var scale = source.el._scale || {};
+ var fill = source.fill;
+ var target = null;
+ var horizontal;
+
+ if (isFinite(fill)) {
+ return null;
+ }
+
+ // Backward compatibility: until v3, we still need to support boundary values set on
+ // the model (scaleTop, scaleBottom and scaleZero) because some external plugins and
+ // controllers might still use it (e.g. the Smith chart).
+
+ if (fill === 'start') {
+ target = model.scaleBottom === undefined ? scale.bottom : model.scaleBottom;
+ } else if (fill === 'end') {
+ target = model.scaleTop === undefined ? scale.top : model.scaleTop;
+ } else if (model.scaleZero !== undefined) {
+ target = model.scaleZero;
+ } else if (scale.getBasePosition) {
+ target = scale.getBasePosition();
+ } else if (scale.getBasePixel) {
+ target = scale.getBasePixel();
+ }
+
+ if (target !== undefined && target !== null) {
+ if (target.x !== undefined && target.y !== undefined) {
+ return target;
+ }
+
+ if (helpers$1.isFinite(target)) {
+ horizontal = scale.isHorizontal();
+ return {
+ x: horizontal ? target : null,
+ y: horizontal ? null : target
+ };
+ }
+ }
+
+ return null;
+}
+
+function resolveTarget(sources, index, propagate) {
+ var source = sources[index];
+ var fill = source.fill;
+ var visited = [index];
+ var target;
+
+ if (!propagate) {
+ return fill;
+ }
+
+ while (fill !== false && visited.indexOf(fill) === -1) {
+ if (!isFinite(fill)) {
+ return fill;
+ }
+
+ target = sources[fill];
+ if (!target) {
+ return false;
+ }
+
+ if (target.visible) {
+ return fill;
+ }
+
+ visited.push(fill);
+ fill = target.fill;
+ }
+
+ return false;
+}
+
+function createMapper(source) {
+ var fill = source.fill;
+ var type = 'dataset';
+
+ if (fill === false) {
+ return null;
+ }
+
+ if (!isFinite(fill)) {
+ type = 'boundary';
+ }
+
+ return mappers[type](source);
+}
+
+function isDrawable(point) {
+ return point && !point.skip;
+}
+
+function drawArea(ctx, curve0, curve1, len0, len1) {
+ var i;
+
+ if (!len0 || !len1) {
+ return;
+ }
+
+ // building first area curve (normal)
+ ctx.moveTo(curve0[0].x, curve0[0].y);
+ for (i = 1; i < len0; ++i) {
+ helpers$1.canvas.lineTo(ctx, curve0[i - 1], curve0[i]);
+ }
+
+ // joining the two area curves
+ ctx.lineTo(curve1[len1 - 1].x, curve1[len1 - 1].y);
+
+ // building opposite area curve (reverse)
+ for (i = len1 - 1; i > 0; --i) {
+ helpers$1.canvas.lineTo(ctx, curve1[i], curve1[i - 1], true);
+ }
+}
+
+function doFill(ctx, points, mapper, view, color, loop) {
+ var count = points.length;
+ var span = view.spanGaps;
+ var curve0 = [];
+ var curve1 = [];
+ var len0 = 0;
+ var len1 = 0;
+ var i, ilen, index, p0, p1, d0, d1;
+
+ ctx.beginPath();
+
+ for (i = 0, ilen = (count + !!loop); i < ilen; ++i) {
+ index = i % count;
+ p0 = points[index]._view;
+ p1 = mapper(p0, index, view);
+ d0 = isDrawable(p0);
+ d1 = isDrawable(p1);
+
+ if (d0 && d1) {
+ len0 = curve0.push(p0);
+ len1 = curve1.push(p1);
+ } else if (len0 && len1) {
+ if (!span) {
+ drawArea(ctx, curve0, curve1, len0, len1);
+ len0 = len1 = 0;
+ curve0 = [];
+ curve1 = [];
+ } else {
+ if (d0) {
+ curve0.push(p0);
+ }
+ if (d1) {
+ curve1.push(p1);
+ }
+ }
+ }
+ }
+
+ drawArea(ctx, curve0, curve1, len0, len1);
+
+ ctx.closePath();
+ ctx.fillStyle = color;
+ ctx.fill();
+}
+
+var plugin_filler = {
+ id: 'filler',
+
+ afterDatasetsUpdate: function(chart, options) {
+ var count = (chart.data.datasets || []).length;
+ var propagate = options.propagate;
+ var sources = [];
+ var meta, i, el, source;
+
+ for (i = 0; i < count; ++i) {
+ meta = chart.getDatasetMeta(i);
+ el = meta.dataset;
+ source = null;
+
+ if (el && el._model && el instanceof elements.Line) {
+ source = {
+ visible: chart.isDatasetVisible(i),
+ fill: decodeFill(el, i, count),
+ chart: chart,
+ el: el
+ };
+ }
+
+ meta.$filler = source;
+ sources.push(source);
+ }
+
+ for (i = 0; i < count; ++i) {
+ source = sources[i];
+ if (!source) {
+ continue;
+ }
+
+ source.fill = resolveTarget(sources, i, propagate);
+ source.boundary = computeBoundary(source);
+ source.mapper = createMapper(source);
+ }
+ },
+
+ beforeDatasetDraw: function(chart, args) {
+ var meta = args.meta.$filler;
+ if (!meta) {
+ return;
+ }
+
+ var ctx = chart.ctx;
+ var el = meta.el;
+ var view = el._view;
+ var points = el._children || [];
+ var mapper = meta.mapper;
+ var color = view.backgroundColor || core_defaults.global.defaultColor;
+
+ if (mapper && color && points.length) {
+ helpers$1.canvas.clipArea(ctx, chart.chartArea);
+ doFill(ctx, points, mapper, view, color, el._loop);
+ helpers$1.canvas.unclipArea(ctx);
+ }
+ }
+};
+
+var noop$1 = helpers$1.noop;
+var valueOrDefault$d = helpers$1.valueOrDefault;
+
+core_defaults._set('global', {
+ legend: {
+ display: true,
+ position: 'top',
+ fullWidth: true,
+ reverse: false,
+ weight: 1000,
+
+ // a callback that will handle
+ onClick: function(e, legendItem) {
+ var index = legendItem.datasetIndex;
+ var ci = this.chart;
+ var meta = ci.getDatasetMeta(index);
+
+ // See controller.isDatasetVisible comment
+ meta.hidden = meta.hidden === null ? !ci.data.datasets[index].hidden : null;
+
+ // We hid a dataset ... rerender the chart
+ ci.update();
+ },
+
+ onHover: null,
+ onLeave: null,
+
+ labels: {
+ boxWidth: 40,
+ padding: 10,
+ // Generates labels shown in the legend
+ // Valid properties to return:
+ // text : text to display
+ // fillStyle : fill of coloured box
+ // strokeStyle: stroke of coloured box
+ // hidden : if this legend item refers to a hidden item
+ // lineCap : cap style for line
+ // lineDash
+ // lineDashOffset :
+ // lineJoin :
+ // lineWidth :
+ generateLabels: function(chart) {
+ var data = chart.data;
+ return helpers$1.isArray(data.datasets) ? data.datasets.map(function(dataset, i) {
+ return {
+ text: dataset.label,
+ fillStyle: (!helpers$1.isArray(dataset.backgroundColor) ? dataset.backgroundColor : dataset.backgroundColor[0]),
+ hidden: !chart.isDatasetVisible(i),
+ lineCap: dataset.borderCapStyle,
+ lineDash: dataset.borderDash,
+ lineDashOffset: dataset.borderDashOffset,
+ lineJoin: dataset.borderJoinStyle,
+ lineWidth: dataset.borderWidth,
+ strokeStyle: dataset.borderColor,
+ pointStyle: dataset.pointStyle,
+
+ // Below is extra data used for toggling the datasets
+ datasetIndex: i
+ };
+ }, this) : [];
+ }
+ }
+ },
+
+ legendCallback: function(chart) {
+ var text = [];
+ text.push('<ul class="' + chart.id + '-legend">');
+ for (var i = 0; i < chart.data.datasets.length; i++) {
+ text.push('<li><span style="background-color:' + chart.data.datasets[i].backgroundColor + '"></span>');
+ if (chart.data.datasets[i].label) {
+ text.push(chart.data.datasets[i].label);
+ }
+ text.push('</li>');
+ }
+ text.push('</ul>');
+ return text.join('');
+ }
+});
+
+/**
+ * Helper function to get the box width based on the usePointStyle option
+ * @param {object} labelopts - the label options on the legend
+ * @param {number} fontSize - the label font size
+ * @return {number} width of the color box area
+ */
+function getBoxWidth(labelOpts, fontSize) {
+ return labelOpts.usePointStyle && labelOpts.boxWidth > fontSize ?
+ fontSize :
+ labelOpts.boxWidth;
+}
+
+/**
+ * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
+ */
+var Legend = core_element.extend({
+
+ initialize: function(config) {
+ helpers$1.extend(this, config);
+
+ // Contains hit boxes for each dataset (in dataset order)
+ this.legendHitBoxes = [];
+
+ /**
+ * @private
+ */
+ this._hoveredItem = null;
+
+ // Are we in doughnut mode which has a different data type
+ this.doughnutMode = false;
+ },
+
+ // These methods are ordered by lifecycle. Utilities then follow.
+ // Any function defined here is inherited by all legend types.
+ // Any function can be extended by the legend type
+
+ beforeUpdate: noop$1,
+ update: function(maxWidth, maxHeight, margins) {
+ var me = this;
+
+ // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
+ me.beforeUpdate();
+
+ // Absorb the master measurements
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = margins;
+
+ // Dimensions
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
+ // Labels
+ me.beforeBuildLabels();
+ me.buildLabels();
+ me.afterBuildLabels();
+
+ // Fit
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
+ //
+ me.afterUpdate();
+
+ return me.minSize;
+ },
+ afterUpdate: noop$1,
+
+ //
+
+ beforeSetDimensions: noop$1,
+ setDimensions: function() {
+ var me = this;
+ // Set the unconstrained dimension before label rotation
+ if (me.isHorizontal()) {
+ // Reset position before calculating rotation
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
+ } else {
+ me.height = me.maxHeight;
+
+ // Reset position before calculating rotation
+ me.top = 0;
+ me.bottom = me.height;
+ }
+
+ // Reset padding
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
+
+ // Reset minSize
+ me.minSize = {
+ width: 0,
+ height: 0
+ };
+ },
+ afterSetDimensions: noop$1,
+
+ //
+
+ beforeBuildLabels: noop$1,
+ buildLabels: function() {
+ var me = this;
+ var labelOpts = me.options.labels || {};
+ var legendItems = helpers$1.callback(labelOpts.generateLabels, [me.chart], me) || [];
+
+ if (labelOpts.filter) {
+ legendItems = legendItems.filter(function(item) {
+ return labelOpts.filter(item, me.chart.data);
+ });
+ }
+
+ if (me.options.reverse) {
+ legendItems.reverse();
+ }
+
+ me.legendItems = legendItems;
+ },
+ afterBuildLabels: noop$1,
+
+ //
+
+ beforeFit: noop$1,
+ fit: function() {
+ var me = this;
+ var opts = me.options;
+ var labelOpts = opts.labels;
+ var display = opts.display;
+
+ var ctx = me.ctx;
+
+ var labelFont = helpers$1.options._parseFont(labelOpts);
+ var fontSize = labelFont.size;
+
+ // Reset hit boxes
+ var hitboxes = me.legendHitBoxes = [];
+
+ var minSize = me.minSize;
+ var isHorizontal = me.isHorizontal();
+
+ if (isHorizontal) {
+ minSize.width = me.maxWidth; // fill all the width
+ minSize.height = display ? 10 : 0;
+ } else {
+ minSize.width = display ? 10 : 0;
+ minSize.height = me.maxHeight; // fill all the height
+ }
+
+ // Increase sizes here
+ if (display) {
+ ctx.font = labelFont.string;
+
+ if (isHorizontal) {
+ // Labels
+
+ // Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one
+ var lineWidths = me.lineWidths = [0];
+ var totalHeight = 0;
+
+ ctx.textAlign = 'left';
+ ctx.textBaseline = 'top';
+
+ helpers$1.each(me.legendItems, function(legendItem, i) {
+ var boxWidth = getBoxWidth(labelOpts, fontSize);
+ var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
+
+ if (i === 0 || lineWidths[lineWidths.length - 1] + width + labelOpts.padding > minSize.width) {
+ totalHeight += fontSize + labelOpts.padding;
+ lineWidths[lineWidths.length - (i > 0 ? 0 : 1)] = labelOpts.padding;
+ }
+
+ // Store the hitbox width and height here. Final position will be updated in `draw`
+ hitboxes[i] = {
+ left: 0,
+ top: 0,
+ width: width,
+ height: fontSize
+ };
+
+ lineWidths[lineWidths.length - 1] += width + labelOpts.padding;
+ });
+
+ minSize.height += totalHeight;
+
+ } else {
+ var vPadding = labelOpts.padding;
+ var columnWidths = me.columnWidths = [];
+ var totalWidth = labelOpts.padding;
+ var currentColWidth = 0;
+ var currentColHeight = 0;
+ var itemHeight = fontSize + vPadding;
+
+ helpers$1.each(me.legendItems, function(legendItem, i) {
+ var boxWidth = getBoxWidth(labelOpts, fontSize);
+ var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
+
+ // If too tall, go to new column
+ if (i > 0 && currentColHeight + itemHeight > minSize.height - vPadding) {
+ totalWidth += currentColWidth + labelOpts.padding;
+ columnWidths.push(currentColWidth); // previous column width
+
+ currentColWidth = 0;
+ currentColHeight = 0;
+ }
+
+ // Get max width
+ currentColWidth = Math.max(currentColWidth, itemWidth);
+ currentColHeight += itemHeight;
+
+ // Store the hitbox width and height here. Final position will be updated in `draw`
+ hitboxes[i] = {
+ left: 0,
+ top: 0,
+ width: itemWidth,
+ height: fontSize
+ };
+ });
+
+ totalWidth += currentColWidth;
+ columnWidths.push(currentColWidth);
+ minSize.width += totalWidth;
+ }
+ }
+
+ me.width = minSize.width;
+ me.height = minSize.height;
+ },
+ afterFit: noop$1,
+
+ // Shared Methods
+ isHorizontal: function() {
+ return this.options.position === 'top' || this.options.position === 'bottom';
+ },
+
+ // Actually draw the legend on the canvas
+ draw: function() {
+ var me = this;
+ var opts = me.options;
+ var labelOpts = opts.labels;
+ var globalDefaults = core_defaults.global;
+ var defaultColor = globalDefaults.defaultColor;
+ var lineDefault = globalDefaults.elements.line;
+ var legendWidth = me.width;
+ var lineWidths = me.lineWidths;
+
+ if (opts.display) {
+ var ctx = me.ctx;
+ var fontColor = valueOrDefault$d(labelOpts.fontColor, globalDefaults.defaultFontColor);
+ var labelFont = helpers$1.options._parseFont(labelOpts);
+ var fontSize = labelFont.size;
+ var cursor;
+
+ // Canvas setup
+ ctx.textAlign = 'left';
+ ctx.textBaseline = 'middle';
+ ctx.lineWidth = 0.5;
+ ctx.strokeStyle = fontColor; // for strikethrough effect
+ ctx.fillStyle = fontColor; // render in correct colour
+ ctx.font = labelFont.string;
+
+ var boxWidth = getBoxWidth(labelOpts, fontSize);
+ var hitboxes = me.legendHitBoxes;
+
+ // current position
+ var drawLegendBox = function(x, y, legendItem) {
+ if (isNaN(boxWidth) || boxWidth <= 0) {
+ return;
+ }
+
+ // Set the ctx for the box
+ ctx.save();
+
+ var lineWidth = valueOrDefault$d(legendItem.lineWidth, lineDefault.borderWidth);
+ ctx.fillStyle = valueOrDefault$d(legendItem.fillStyle, defaultColor);
+ ctx.lineCap = valueOrDefault$d(legendItem.lineCap, lineDefault.borderCapStyle);
+ ctx.lineDashOffset = valueOrDefault$d(legendItem.lineDashOffset, lineDefault.borderDashOffset);
+ ctx.lineJoin = valueOrDefault$d(legendItem.lineJoin, lineDefault.borderJoinStyle);
+ ctx.lineWidth = lineWidth;
+ ctx.strokeStyle = valueOrDefault$d(legendItem.strokeStyle, defaultColor);
+
+ if (ctx.setLineDash) {
+ // IE 9 and 10 do not support line dash
+ ctx.setLineDash(valueOrDefault$d(legendItem.lineDash, lineDefault.borderDash));
+ }
+
+ if (opts.labels && opts.labels.usePointStyle) {
+ // Recalculate x and y for drawPoint() because its expecting
+ // x and y to be center of figure (instead of top left)
+ var radius = boxWidth * Math.SQRT2 / 2;
+ var centerX = x + boxWidth / 2;
+ var centerY = y + fontSize / 2;
+
+ // Draw pointStyle as legend symbol
+ helpers$1.canvas.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY);
+ } else {
+ // Draw box as legend symbol
+ if (lineWidth !== 0) {
+ ctx.strokeRect(x, y, boxWidth, fontSize);
+ }
+ ctx.fillRect(x, y, boxWidth, fontSize);
+ }
+
+ ctx.restore();
+ };
+ var fillText = function(x, y, legendItem, textWidth) {
+ var halfFontSize = fontSize / 2;
+ var xLeft = boxWidth + halfFontSize + x;
+ var yMiddle = y + halfFontSize;
+
+ ctx.fillText(legendItem.text, xLeft, yMiddle);
+
+ if (legendItem.hidden) {
+ // Strikethrough the text if hidden
+ ctx.beginPath();
+ ctx.lineWidth = 2;
+ ctx.moveTo(xLeft, yMiddle);
+ ctx.lineTo(xLeft + textWidth, yMiddle);
+ ctx.stroke();
+ }
+ };
+
+ // Horizontal
+ var isHorizontal = me.isHorizontal();
+ if (isHorizontal) {
+ cursor = {
+ x: me.left + ((legendWidth - lineWidths[0]) / 2) + labelOpts.padding,
+ y: me.top + labelOpts.padding,
+ line: 0
+ };
+ } else {
+ cursor = {
+ x: me.left + labelOpts.padding,
+ y: me.top + labelOpts.padding,
+ line: 0
+ };
+ }
+
+ var itemHeight = fontSize + labelOpts.padding;
+ helpers$1.each(me.legendItems, function(legendItem, i) {
+ var textWidth = ctx.measureText(legendItem.text).width;
+ var width = boxWidth + (fontSize / 2) + textWidth;
+ var x = cursor.x;
+ var y = cursor.y;
+
+ // Use (me.left + me.minSize.width) and (me.top + me.minSize.height)
+ // instead of me.right and me.bottom because me.width and me.height
+ // may have been changed since me.minSize was calculated
+ if (isHorizontal) {
+ if (i > 0 && x + width + labelOpts.padding > me.left + me.minSize.width) {
+ y = cursor.y += itemHeight;
+ cursor.line++;
+ x = cursor.x = me.left + ((legendWidth - lineWidths[cursor.line]) / 2) + labelOpts.padding;
+ }
+ } else if (i > 0 && y + itemHeight > me.top + me.minSize.height) {
+ x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding;
+ y = cursor.y = me.top + labelOpts.padding;
+ cursor.line++;
+ }
+
+ drawLegendBox(x, y, legendItem);
+
+ hitboxes[i].left = x;
+ hitboxes[i].top = y;
+
+ // Fill the actual label
+ fillText(x, y, legendItem, textWidth);
+
+ if (isHorizontal) {
+ cursor.x += width + labelOpts.padding;
+ } else {
+ cursor.y += itemHeight;
+ }
+
+ });
+ }
+ },
+
+ /**
+ * @private
+ */
+ _getLegendItemAt: function(x, y) {
+ var me = this;
+ var i, hitBox, lh;
+
+ if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) {
+ // See if we are touching one of the dataset boxes
+ lh = me.legendHitBoxes;
+ for (i = 0; i < lh.length; ++i) {
+ hitBox = lh[i];
+
+ if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) {
+ // Touching an element
+ return me.legendItems[i];
+ }
+ }
+ }
+
+ return null;
+ },
+
+ /**
+ * Handle an event
+ * @private
+ * @param {IEvent} event - The event to handle
+ */
+ handleEvent: function(e) {
+ var me = this;
+ var opts = me.options;
+ var type = e.type === 'mouseup' ? 'click' : e.type;
+ var hoveredItem;
+
+ if (type === 'mousemove') {
+ if (!opts.onHover && !opts.onLeave) {
+ return;
+ }
+ } else if (type === 'click') {
+ if (!opts.onClick) {
+ return;
+ }
+ } else {
+ return;
+ }
+
+ // Chart event already has relative position in it
+ hoveredItem = me._getLegendItemAt(e.x, e.y);
+
+ if (type === 'click') {
+ if (hoveredItem && opts.onClick) {
+ // use e.native for backwards compatibility
+ opts.onClick.call(me, e.native, hoveredItem);
+ }
+ } else {
+ if (opts.onLeave && hoveredItem !== me._hoveredItem) {
+ if (me._hoveredItem) {
+ opts.onLeave.call(me, e.native, me._hoveredItem);
+ }
+ me._hoveredItem = hoveredItem;
+ }
+
+ if (opts.onHover && hoveredItem) {
+ // use e.native for backwards compatibility
+ opts.onHover.call(me, e.native, hoveredItem);
+ }
+ }
+ }
+});
+
+function createNewLegendAndAttach(chart, legendOpts) {
+ var legend = new Legend({
+ ctx: chart.ctx,
+ options: legendOpts,
+ chart: chart
+ });
+
+ core_layouts.configure(chart, legend, legendOpts);
+ core_layouts.addBox(chart, legend);
+ chart.legend = legend;
+}
+
+var plugin_legend = {
+ id: 'legend',
+
+ /**
+ * Backward compatibility: since 2.1.5, the legend is registered as a plugin, making
+ * Chart.Legend obsolete. To avoid a breaking change, we export the Legend as part of
+ * the plugin, which one will be re-exposed in the chart.js file.
+ * https://github.com/chartjs/Chart.js/pull/2640
+ * @private
+ */
+ _element: Legend,
+
+ beforeInit: function(chart) {
+ var legendOpts = chart.options.legend;
+
+ if (legendOpts) {
+ createNewLegendAndAttach(chart, legendOpts);
+ }
+ },
+
+ beforeUpdate: function(chart) {
+ var legendOpts = chart.options.legend;
+ var legend = chart.legend;
+
+ if (legendOpts) {
+ helpers$1.mergeIf(legendOpts, core_defaults.global.legend);
+
+ if (legend) {
+ core_layouts.configure(chart, legend, legendOpts);
+ legend.options = legendOpts;
+ } else {
+ createNewLegendAndAttach(chart, legendOpts);
+ }
+ } else if (legend) {
+ core_layouts.removeBox(chart, legend);
+ delete chart.legend;
+ }
+ },
+
+ afterEvent: function(chart, e) {
+ var legend = chart.legend;
+ if (legend) {
+ legend.handleEvent(e);
+ }
+ }
+};
+
+var noop$2 = helpers$1.noop;
+
+core_defaults._set('global', {
+ title: {
+ display: false,
+ fontStyle: 'bold',
+ fullWidth: true,
+ padding: 10,
+ position: 'top',
+ text: '',
+ weight: 2000 // by default greater than legend (1000) to be above
+ }
+});
+
+/**
+ * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
+ */
+var Title = core_element.extend({
+ initialize: function(config) {
+ var me = this;
+ helpers$1.extend(me, config);
+
+ // Contains hit boxes for each dataset (in dataset order)
+ me.legendHitBoxes = [];
+ },
+
+ // These methods are ordered by lifecycle. Utilities then follow.
+
+ beforeUpdate: noop$2,
+ update: function(maxWidth, maxHeight, margins) {
+ var me = this;
+
+ // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
+ me.beforeUpdate();
+
+ // Absorb the master measurements
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = margins;
+
+ // Dimensions
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
+ // Labels
+ me.beforeBuildLabels();
+ me.buildLabels();
+ me.afterBuildLabels();
+
+ // Fit
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
+ //
+ me.afterUpdate();
+
+ return me.minSize;
+
+ },
+ afterUpdate: noop$2,
+
+ //
+
+ beforeSetDimensions: noop$2,
+ setDimensions: function() {
+ var me = this;
+ // Set the unconstrained dimension before label rotation
+ if (me.isHorizontal()) {
+ // Reset position before calculating rotation
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
+ } else {
+ me.height = me.maxHeight;
+
+ // Reset position before calculating rotation
+ me.top = 0;
+ me.bottom = me.height;
+ }
+
+ // Reset padding
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
+
+ // Reset minSize
+ me.minSize = {
+ width: 0,
+ height: 0
+ };
+ },
+ afterSetDimensions: noop$2,
+
+ //
+
+ beforeBuildLabels: noop$2,
+ buildLabels: noop$2,
+ afterBuildLabels: noop$2,
+
+ //
+
+ beforeFit: noop$2,
+ fit: function() {
+ var me = this;
+ var opts = me.options;
+ var display = opts.display;
+ var minSize = me.minSize;
+ var lineCount = helpers$1.isArray(opts.text) ? opts.text.length : 1;
+ var fontOpts = helpers$1.options._parseFont(opts);
+ var textSize = display ? (lineCount * fontOpts.lineHeight) + (opts.padding * 2) : 0;
+
+ if (me.isHorizontal()) {
+ minSize.width = me.maxWidth; // fill all the width
+ minSize.height = textSize;
+ } else {
+ minSize.width = textSize;
+ minSize.height = me.maxHeight; // fill all the height
+ }
+
+ me.width = minSize.width;
+ me.height = minSize.height;
+
+ },
+ afterFit: noop$2,
+
+ // Shared Methods
+ isHorizontal: function() {
+ var pos = this.options.position;
+ return pos === 'top' || pos === 'bottom';
+ },
+
+ // Actually draw the title block on the canvas
+ draw: function() {
+ var me = this;
+ var ctx = me.ctx;
+ var opts = me.options;
+
+ if (opts.display) {
+ var fontOpts = helpers$1.options._parseFont(opts);
+ var lineHeight = fontOpts.lineHeight;
+ var offset = lineHeight / 2 + opts.padding;
+ var rotation = 0;
+ var top = me.top;
+ var left = me.left;
+ var bottom = me.bottom;
+ var right = me.right;
+ var maxWidth, titleX, titleY;
+
+ ctx.fillStyle = helpers$1.valueOrDefault(opts.fontColor, core_defaults.global.defaultFontColor); // render in correct colour
+ ctx.font = fontOpts.string;
+
+ // Horizontal
+ if (me.isHorizontal()) {
+ titleX = left + ((right - left) / 2); // midpoint of the width
+ titleY = top + offset;
+ maxWidth = right - left;
+ } else {
+ titleX = opts.position === 'left' ? left + offset : right - offset;
+ titleY = top + ((bottom - top) / 2);
+ maxWidth = bottom - top;
+ rotation = Math.PI * (opts.position === 'left' ? -0.5 : 0.5);
+ }
+
+ ctx.save();
+ ctx.translate(titleX, titleY);
+ ctx.rotate(rotation);
+ ctx.textAlign = 'center';
+ ctx.textBaseline = 'middle';
+
+ var text = opts.text;
+ if (helpers$1.isArray(text)) {
+ var y = 0;
+ for (var i = 0; i < text.length; ++i) {
+ ctx.fillText(text[i], 0, y, maxWidth);
+ y += lineHeight;
+ }
+ } else {
+ ctx.fillText(text, 0, 0, maxWidth);
+ }
+
+ ctx.restore();
+ }
+ }
+});
+
+function createNewTitleBlockAndAttach(chart, titleOpts) {
+ var title = new Title({
+ ctx: chart.ctx,
+ options: titleOpts,
+ chart: chart
+ });
+
+ core_layouts.configure(chart, title, titleOpts);
+ core_layouts.addBox(chart, title);
+ chart.titleBlock = title;
+}
+
+var plugin_title = {
+ id: 'title',
+
+ /**
+ * Backward compatibility: since 2.1.5, the title is registered as a plugin, making
+ * Chart.Title obsolete. To avoid a breaking change, we export the Title as part of
+ * the plugin, which one will be re-exposed in the chart.js file.
+ * https://github.com/chartjs/Chart.js/pull/2640
+ * @private
+ */
+ _element: Title,
+
+ beforeInit: function(chart) {
+ var titleOpts = chart.options.title;
+
+ if (titleOpts) {
+ createNewTitleBlockAndAttach(chart, titleOpts);
+ }
+ },
+
+ beforeUpdate: function(chart) {
+ var titleOpts = chart.options.title;
+ var titleBlock = chart.titleBlock;
+
+ if (titleOpts) {
+ helpers$1.mergeIf(titleOpts, core_defaults.global.title);
+
+ if (titleBlock) {
+ core_layouts.configure(chart, titleBlock, titleOpts);
+ titleBlock.options = titleOpts;
+ } else {
+ createNewTitleBlockAndAttach(chart, titleOpts);
+ }
+ } else if (titleBlock) {
+ core_layouts.removeBox(chart, titleBlock);
+ delete chart.titleBlock;
+ }
+ }
+};
+
+var plugins = {};
+var filler = plugin_filler;
+var legend = plugin_legend;
+var title = plugin_title;
+plugins.filler = filler;
+plugins.legend = legend;
+plugins.title = title;
+
+/**
+ * @namespace Chart
+ */
+
+
+core_controller.helpers = helpers$1;
+
+// @todo dispatch these helpers into appropriated helpers/helpers.* file and write unit tests!
+core_helpers(core_controller);
+
+core_controller._adapters = core_adapters;
+core_controller.Animation = core_animation;
+core_controller.animationService = core_animations;
+core_controller.controllers = controllers;
+core_controller.DatasetController = core_datasetController;
+core_controller.defaults = core_defaults;
+core_controller.Element = core_element;
+core_controller.elements = elements;
+core_controller.Interaction = core_interaction;
+core_controller.layouts = core_layouts;
+core_controller.platform = platform;
+core_controller.plugins = core_plugins;
+core_controller.Scale = core_scale;
+core_controller.scaleService = core_scaleService;
+core_controller.Ticks = core_ticks;
+core_controller.Tooltip = core_tooltip;
+
+// Register built-in scales
+
+core_controller.helpers.each(scales, function(scale, type) {
+ core_controller.scaleService.registerScaleType(type, scale, scale._defaults);
+});
+
+// Load to register built-in adapters (as side effects)
+
+
+// Loading built-in plugins
+
+for (var k in plugins) {
+ if (plugins.hasOwnProperty(k)) {
+ core_controller.plugins.register(plugins[k]);
+ }
+}
+
+core_controller.platform.initialize();
+
+var src = core_controller;
+if (typeof window !== 'undefined') {
+ window.Chart = core_controller;
+}
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, not available anymore
+ * @namespace Chart.Chart
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.Chart = core_controller;
+
+/**
+ * Provided for backward compatibility, not available anymore
+ * @namespace Chart.Legend
+ * @deprecated since version 2.1.5
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.Legend = plugins.legend._element;
+
+/**
+ * Provided for backward compatibility, not available anymore
+ * @namespace Chart.Title
+ * @deprecated since version 2.1.5
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.Title = plugins.title._element;
+
+/**
+ * Provided for backward compatibility, use Chart.plugins instead
+ * @namespace Chart.pluginService
+ * @deprecated since version 2.1.5
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.pluginService = core_controller.plugins;
+
+/**
+ * Provided for backward compatibility, inheriting from Chart.PlugingBase has no
+ * effect, instead simply create/register plugins via plain JavaScript objects.
+ * @interface Chart.PluginBase
+ * @deprecated since version 2.5.0
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.PluginBase = core_controller.Element.extend({});
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.canvas instead.
+ * @namespace Chart.canvasHelpers
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.canvasHelpers = core_controller.helpers.canvas;
+
+/**
+ * Provided for backward compatibility, use Chart.layouts instead.
+ * @namespace Chart.layoutService
+ * @deprecated since version 2.7.3
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.layoutService = core_controller.layouts;
+
+/**
+ * Provided for backward compatibility, not available anymore.
+ * @namespace Chart.LinearScaleBase
+ * @deprecated since version 2.8
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.LinearScaleBase = scale_linearbase;
+
+/**
+ * Provided for backward compatibility, instead we should create a new Chart
+ * by setting the type in the config (`new Chart(id, {type: '{chart-type}'}`).
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ */
+core_controller.helpers.each(
+ [
+ 'Bar',
+ 'Bubble',
+ 'Doughnut',
+ 'Line',
+ 'PolarArea',
+ 'Radar',
+ 'Scatter'
+ ],
+ function(klass) {
+ core_controller[klass] = function(ctx, cfg) {
+ return new core_controller(ctx, core_controller.helpers.merge(cfg || {}, {
+ type: klass.charAt(0).toLowerCase() + klass.slice(1)
+ }));
+ };
+ }
+);
+
+return src;
+
+})));
--- /dev/null
+/*!
+ * Chart.js v2.8.0
+ * https://www.chartjs.org
+ * (c) 2019 Chart.js Contributors
+ * Released under the MIT License
+ */
+!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):t.Chart=e()}(this,function(){"use strict";var t={rgb2hsl:e,rgb2hsv:i,rgb2hwb:n,rgb2cmyk:a,rgb2keyword:o,rgb2xyz:s,rgb2lab:l,rgb2lch:function(t){return v(l(t))},hsl2rgb:u,hsl2hsv:function(t){var e=t[0],i=t[1]/100,n=t[2]/100;if(0===n)return[0,0,0];return[e,100*(2*(i*=(n*=2)<=1?n:2-n)/(n+i)),100*((n+i)/2)]},hsl2hwb:function(t){return n(u(t))},hsl2cmyk:function(t){return a(u(t))},hsl2keyword:function(t){return o(u(t))},hsv2rgb:d,hsv2hsl:function(t){var e,i,n=t[0],a=t[1]/100,r=t[2]/100;return e=a*r,[n,100*(e=(e/=(i=(2-a)*r)<=1?i:2-i)||0),100*(i/=2)]},hsv2hwb:function(t){return n(d(t))},hsv2cmyk:function(t){return a(d(t))},hsv2keyword:function(t){return o(d(t))},hwb2rgb:h,hwb2hsl:function(t){return e(h(t))},hwb2hsv:function(t){return i(h(t))},hwb2cmyk:function(t){return a(h(t))},hwb2keyword:function(t){return o(h(t))},cmyk2rgb:c,cmyk2hsl:function(t){return 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t,e=this._chart.ctx,i=this._view,n=i.startAngle,a=i.endAngle,r="inner"===i.borderAlign?.33:0;e.save(),e.beginPath(),e.arc(i.x,i.y,Math.max(i.outerRadius-r,0),n,a),e.arc(i.x,i.y,i.innerRadius,a,n,!0),e.closePath(),e.fillStyle=i.backgroundColor,e.fill(),i.borderWidth&&("inner"===i.borderAlign?(e.beginPath(),t=r/i.outerRadius,e.arc(i.x,i.y,i.outerRadius,n-t,a+t),i.innerRadius>r?(t=r/i.innerRadius,e.arc(i.x,i.y,i.innerRadius-r,a+t,n-t,!0)):e.arc(i.x,i.y,r,a+Math.PI/2,n-Math.PI/2),e.closePath(),e.clip(),e.beginPath(),e.arc(i.x,i.y,i.outerRadius,n,a),e.arc(i.x,i.y,i.innerRadius,a,n,!0),e.closePath(),e.lineWidth=2*i.borderWidth,e.lineJoin="round"):(e.lineWidth=i.borderWidth,e.lineJoin="bevel"),e.strokeStyle=i.borderColor,e.stroke()),e.restore()}}),Mt=ut.valueOrDefault,St=ot.global.defaultColor;ot._set("global",{elements:{line:{tension:.4,backgroundColor:St,borderWidth:3,borderColor:St,borderCapStyle:"butt",borderDash:[],borderDashOffset:0,borderJoinStyle:"miter",capBezierPoints:!0,fill:!0}}});var Dt=gt.extend({draw:function(){var t,e,i,n,a=this._view,r=this._chart.ctx,o=a.spanGaps,s=this._children.slice(),l=ot.global,u=l.elements.line,d=-1;for(this._loop&&s.length&&s.push(s[0]),r.save(),r.lineCap=a.borderCapStyle||u.borderCapStyle,r.setLineDash&&r.setLineDash(a.borderDash||u.borderDash),r.lineDashOffset=Mt(a.borderDashOffset,u.borderDashOffset),r.lineJoin=a.borderJoinStyle||u.borderJoinStyle,r.lineWidth=Mt(a.borderWidth,u.borderWidth),r.strokeStyle=a.borderColor||l.defaultColor,r.beginPath(),d=-1,t=0;t<s.length;++t)e=s[t],i=ut.previousItem(s,t),n=e._view,0===t?n.skip||(r.moveTo(n.x,n.y),d=t):(i=-1===d?i:s[d],n.skip||(d!==t-1&&!o||-1===d?r.moveTo(n.x,n.y):ut.canvas.lineTo(r,i._view,e._view),d=t));r.stroke(),r.restore()}}),Ct=ut.valueOrDefault,Pt=ot.global.defaultColor;function Tt(t){var e=this._view;return!!e&&Math.abs(t-e.x)<e.radius+e.hitRadius}ot._set("global",{elements:{point:{radius:3,pointStyle:"circle",backgroundColor:Pt,borderColor:Pt,borderWidth:1,hitRadius:1,hoverRadius:4,hoverBorderWidth:1}}});var Ot=gt.extend({inRange:function(t,e){var i=this._view;return!!i&&Math.pow(t-i.x,2)+Math.pow(e-i.y,2)<Math.pow(i.hitRadius+i.radius,2)},inLabelRange:Tt,inXRange:Tt,inYRange:function(t){var e=this._view;return!!e&&Math.abs(t-e.y)<e.radius+e.hitRadius},getCenterPoint:function(){var t=this._view;return{x:t.x,y:t.y}},getArea:function(){return Math.PI*Math.pow(this._view.radius,2)},tooltipPosition:function(){var t=this._view;return{x:t.x,y:t.y,padding:t.radius+t.borderWidth}},draw:function(t){var e=this._view,i=this._chart.ctx,n=e.pointStyle,a=e.rotation,r=e.radius,o=e.x,s=e.y,l=ot.global,u=l.defaultColor;e.skip||(void 0===t||ut.canvas._isPointInArea(e,t))&&(i.strokeStyle=e.borderColor||u,i.lineWidth=Ct(e.borderWidth,l.elements.point.borderWidth),i.fillStyle=e.backgroundColor||u,ut.canvas.drawPoint(i,n,r,o,s,a))}}),It=ot.global.defaultColor;function At(t){return t&&void 0!==t.width}function Ft(t){var e,i,n,a,r;return At(t)?(r=t.width/2,e=t.x-r,i=t.x+r,n=Math.min(t.y,t.base),a=Math.max(t.y,t.base)):(r=t.height/2,e=Math.min(t.x,t.base),i=Math.max(t.x,t.base),n=t.y-r,a=t.y+r),{left:e,top:n,right:i,bottom:a}}function Rt(t,e,i){return t===e?i:t===i?e:t}function Lt(t,e,i){var n,a,r,o,s=t.borderWidth,l=function(t){var e=t.borderSkipped,i={};return e?(t.horizontal?t.base>t.x&&(e=Rt(e,"left","right")):t.base<t.y&&(e=Rt(e,"bottom","top")),i[e]=!0,i):i}(t);return ut.isObject(s)?(n=+s.top||0,a=+s.right||0,r=+s.bottom||0,o=+s.left||0):n=a=r=o=+s||0,{t:l.top||n<0?0:n>i?i:n,r:l.right||a<0?0:a>e?e:a,b:l.bottom||r<0?0:r>i?i:r,l:l.left||o<0?0:o>e?e:o}}function Wt(t,e,i){var n=null===e,a=null===i,r=!(!t||n&&a)&&Ft(t);return r&&(n||e>=r.left&&e<=r.right)&&(a||i>=r.top&&i<=r.bottom)}ot._set("global",{elements:{rectangle:{backgroundColor:It,borderColor:It,borderSkipped:"bottom",borderWidth:0}}});var Yt=gt.extend({draw:function(){var t=this._chart.ctx,e=this._view,i=function(t){var e=Ft(t),i=e.right-e.left,n=e.bottom-e.top,a=Lt(t,i/2,n/2);return{outer:{x:e.left,y:e.top,w:i,h:n},inner:{x:e.left+a.l,y:e.top+a.t,w:i-a.l-a.r,h:n-a.t-a.b}}}(e),n=i.outer,a=i.inner;t.fillStyle=e.backgroundColor,t.fillRect(n.x,n.y,n.w,n.h),n.w===a.w&&n.h===a.h||(t.save(),t.beginPath(),t.rect(n.x,n.y,n.w,n.h),t.clip(),t.fillStyle=e.borderColor,t.rect(a.x,a.y,a.w,a.h),t.fill("evenodd"),t.restore())},height:function(){var t=this._view;return t.base-t.y},inRange:function(t,e){return Wt(this._view,t,e)},inLabelRange:function(t,e){var i=this._view;return At(i)?Wt(i,t,null):Wt(i,null,e)},inXRange:function(t){return Wt(this._view,t,null)},inYRange:function(t){return Wt(this._view,null,t)},getCenterPoint:function(){var t,e,i=this._view;return At(i)?(t=i.x,e=(i.y+i.base)/2):(t=(i.x+i.base)/2,e=i.y),{x:t,y:e}},getArea:function(){var t=this._view;return At(t)?t.width*Math.abs(t.y-t.base):t.height*Math.abs(t.x-t.base)},tooltipPosition:function(){var t=this._view;return{x:t.x,y:t.y}}}),Nt={},zt=wt,Vt=Dt,Ht=Ot,Et=Yt;Nt.Arc=zt,Nt.Line=Vt,Nt.Point=Ht,Nt.Rectangle=Et;var Bt=ut.options.resolve;ot._set("bar",{hover:{mode:"label"},scales:{xAxes:[{type:"category",categoryPercentage:.8,barPercentage:.9,offset:!0,gridLines:{offsetGridLines:!0}}],yAxes:[{type:"linear"}]}});var jt=kt.extend({dataElementType:Nt.Rectangle,initialize:function(){var t;kt.prototype.initialize.apply(this,arguments),(t=this.getMeta()).stack=this.getDataset().stack,t.bar=!0},update:function(t){var e,i,n=this.getMeta().data;for(this._ruler=this.getRuler(),e=0,i=n.length;e<i;++e)this.updateElement(n[e],e,t)},updateElement:function(t,e,i){var n=this,a=n.getMeta(),r=n.getDataset(),o=n._resolveElementOptions(t,e);t._xScale=n.getScaleForId(a.xAxisID),t._yScale=n.getScaleForId(a.yAxisID),t._datasetIndex=n.index,t._index=e,t._model={backgroundColor:o.backgroundColor,borderColor:o.borderColor,borderSkipped:o.borderSkipped,borderWidth:o.borderWidth,datasetLabel:r.label,label:n.chart.data.labels[e]},n._updateElementGeometry(t,e,i),t.pivot()},_updateElementGeometry:function(t,e,i){var n=this,a=t._model,r=n._getValueScale(),o=r.getBasePixel(),s=r.isHorizontal(),l=n._ruler||n.getRuler(),u=n.calculateBarValuePixels(n.index,e),d=n.calculateBarIndexPixels(n.index,e,l);a.horizontal=s,a.base=i?o:u.base,a.x=s?i?o:u.head:d.center,a.y=s?d.center:i?o:u.head,a.height=s?d.size:void 0,a.width=s?void 0:d.size},_getStacks:function(t){var e,i,n=this.chart,a=this._getIndexScale().options.stacked,r=void 0===t?n.data.datasets.length:t+1,o=[];for(e=0;e<r;++e)(i=n.getDatasetMeta(e)).bar&&n.isDatasetVisible(e)&&(!1===a||!0===a&&-1===o.indexOf(i.stack)||void 0===a&&(void 0===i.stack||-1===o.indexOf(i.stack)))&&o.push(i.stack);return o},getStackCount:function(){return this._getStacks().length},getStackIndex:function(t,e){var i=this._getStacks(t),n=void 0!==e?i.indexOf(e):-1;return-1===n?i.length-1:n},getRuler:function(){var t,e,i=this._getIndexScale(),n=this.getStackCount(),a=this.index,r=i.isHorizontal(),o=r?i.left:i.top,s=o+(r?i.width:i.height),l=[];for(t=0,e=this.getMeta().data.length;t<e;++t)l.push(i.getPixelForValue(null,t,a));return{min:ut.isNullOrUndef(i.options.barThickness)?function(t,e){var i,n,a,r,o=t.isHorizontal()?t.width:t.height,s=t.getTicks();for(a=1,r=e.length;a<r;++a)o=Math.min(o,Math.abs(e[a]-e[a-1]));for(a=0,r=s.length;a<r;++a)n=t.getPixelForTick(a),o=a>0?Math.min(o,n-i):o,i=n;return o}(i,l):-1,pixels:l,start:o,end:s,stackCount:n,scale:i}},calculateBarValuePixels:function(t,e){var i,n,a,r,o,s,l=this.chart,u=this.getMeta(),d=this._getValueScale(),h=d.isHorizontal(),c=l.data.datasets,f=+d.getRightValue(c[t].data[e]),g=d.options.minBarLength,m=d.options.stacked,p=u.stack,v=0;if(m||void 0===m&&void 0!==p)for(i=0;i<t;++i)(n=l.getDatasetMeta(i)).bar&&n.stack===p&&n.controller._getValueScaleId()===d.id&&l.isDatasetVisible(i)&&(a=+d.getRightValue(c[i].data[e]),(f<0&&a<0||f>=0&&a>0)&&(v+=a));return r=d.getPixelForValue(v),s=(o=d.getPixelForValue(v+f))-r,void 0!==g&&Math.abs(s)<g&&(s=g,o=f>=0&&!h||f<0&&h?r-g:r+g),{size:s,base:r,head:o,center:o+s/2}},calculateBarIndexPixels:function(t,e,i){var n=i.scale.options,a="flex"===n.barThickness?function(t,e,i){var n,a=e.pixels,r=a[t],o=t>0?a[t-1]:null,s=t<a.length-1?a[t+1]:null,l=i.categoryPercentage;return null===o&&(o=r-(null===s?e.end-e.start:s-r)),null===s&&(s=r+r-o),n=r-(r-Math.min(o,s))/2*l,{chunk:Math.abs(s-o)/2*l/e.stackCount,ratio:i.barPercentage,start:n}}(e,i,n):function(t,e,i){var n,a,r=i.barThickness,o=e.stackCount,s=e.pixels[t];return ut.isNullOrUndef(r)?(n=e.min*i.categoryPercentage,a=i.barPercentage):(n=r*o,a=1),{chunk:n/o,ratio:a,start:s-n/2}}(e,i,n),r=this.getStackIndex(t,this.getMeta().stack),o=a.start+a.chunk*r+a.chunk/2,s=Math.min(ut.valueOrDefault(n.maxBarThickness,1/0),a.chunk*a.ratio);return{base:o-s/2,head:o+s/2,center:o,size:s}},draw:function(){var t=this.chart,e=this._getValueScale(),i=this.getMeta().data,n=this.getDataset(),a=i.length,r=0;for(ut.canvas.clipArea(t.ctx,t.chartArea);r<a;++r)isNaN(e.getRightValue(n.data[r]))||i[r].draw();ut.canvas.unclipArea(t.ctx)},_resolveElementOptions:function(t,e){var i,n,a,r=this.chart,o=r.data.datasets[this.index],s=t.custom||{},l=r.options.elements.rectangle,u={},d={chart:r,dataIndex:e,dataset:o,datasetIndex:this.index},h=["backgroundColor","borderColor","borderSkipped","borderWidth"];for(i=0,n=h.length;i<n;++i)u[a=h[i]]=Bt([s[a],o[a],l[a]],d,e);return u}}),Ut=ut.valueOrDefault,Gt=ut.options.resolve;ot._set("bubble",{hover:{mode:"single"},scales:{xAxes:[{type:"linear",position:"bottom",id:"x-axis-0"}],yAxes:[{type:"linear",position:"left",id:"y-axis-0"}]},tooltips:{callbacks:{title:function(){return""},label:function(t,e){var i=e.datasets[t.datasetIndex].label||"",n=e.datasets[t.datasetIndex].data[t.index];return i+": ("+t.xLabel+", "+t.yLabel+", "+n.r+")"}}}});var qt=kt.extend({dataElementType:Nt.Point,update:function(t){var e=this,i=e.getMeta().data;ut.each(i,function(i,n){e.updateElement(i,n,t)})},updateElement:function(t,e,i){var n=this,a=n.getMeta(),r=t.custom||{},o=n.getScaleForId(a.xAxisID),s=n.getScaleForId(a.yAxisID),l=n._resolveElementOptions(t,e),u=n.getDataset().data[e],d=n.index,h=i?o.getPixelForDecimal(.5):o.getPixelForValue("object"==typeof u?u:NaN,e,d),c=i?s.getBasePixel():s.getPixelForValue(u,e,d);t._xScale=o,t._yScale=s,t._options=l,t._datasetIndex=d,t._index=e,t._model={backgroundColor:l.backgroundColor,borderColor:l.borderColor,borderWidth:l.borderWidth,hitRadius:l.hitRadius,pointStyle:l.pointStyle,rotation:l.rotation,radius:i?0:l.radius,skip:r.skip||isNaN(h)||isNaN(c),x:h,y:c},t.pivot()},setHoverStyle:function(t){var e=t._model,i=t._options,n=ut.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth,radius:e.radius},e.backgroundColor=Ut(i.hoverBackgroundColor,n(i.backgroundColor)),e.borderColor=Ut(i.hoverBorderColor,n(i.borderColor)),e.borderWidth=Ut(i.hoverBorderWidth,i.borderWidth),e.radius=i.radius+i.hoverRadius},_resolveElementOptions:function(t,e){var i,n,a,r=this.chart,o=r.data.datasets[this.index],s=t.custom||{},l=r.options.elements.point,u=o.data[e],d={},h={chart:r,dataIndex:e,dataset:o,datasetIndex:this.index},c=["backgroundColor","borderColor","borderWidth","hoverBackgroundColor","hoverBorderColor","hoverBorderWidth","hoverRadius","hitRadius","pointStyle","rotation"];for(i=0,n=c.length;i<n;++i)d[a=c[i]]=Gt([s[a],o[a],l[a]],h,e);return d.radius=Gt([s.radius,u?u.r:void 0,o.radius,l.radius],h,e),d}}),Zt=ut.options.resolve,$t=ut.valueOrDefault;ot._set("doughnut",{animation:{animateRotate:!0,animateScale:!1},hover:{mode:"single"},legendCallback:function(t){var e=[];e.push('<ul class="'+t.id+'-legend">');var i=t.data,n=i.datasets,a=i.labels;if(n.length)for(var r=0;r<n[0].data.length;++r)e.push('<li><span style="background-color:'+n[0].backgroundColor[r]+'"></span>'),a[r]&&e.push(a[r]),e.push("</li>");return e.push("</ul>"),e.join("")},legend:{labels:{generateLabels:function(t){var e=t.data;return e.labels.length&&e.datasets.length?e.labels.map(function(i,n){var a=t.getDatasetMeta(0),r=e.datasets[0],o=a.data[n],s=o&&o.custom||{},l=t.options.elements.arc;return{text:i,fillStyle:Zt([s.backgroundColor,r.backgroundColor,l.backgroundColor],void 0,n),strokeStyle:Zt([s.borderColor,r.borderColor,l.borderColor],void 0,n),lineWidth:Zt([s.borderWidth,r.borderWidth,l.borderWidth],void 0,n),hidden:isNaN(r.data[n])||a.data[n].hidden,index:n}}):[]}},onClick:function(t,e){var i,n,a,r=e.index,o=this.chart;for(i=0,n=(o.data.datasets||[]).length;i<n;++i)(a=o.getDatasetMeta(i)).data[r]&&(a.data[r].hidden=!a.data[r].hidden);o.update()}},cutoutPercentage:50,rotation:-.5*Math.PI,circumference:2*Math.PI,tooltips:{callbacks:{title:function(){return""},label:function(t,e){var i=e.labels[t.index],n=": "+e.datasets[t.datasetIndex].data[t.index];return ut.isArray(i)?(i=i.slice())[0]+=n:i+=n,i}}}});var Xt=kt.extend({dataElementType:Nt.Arc,linkScales:ut.noop,getRingIndex:function(t){for(var e=0,i=0;i<t;++i)this.chart.isDatasetVisible(i)&&++e;return e},update:function(t){var e,i,n=this,a=n.chart,r=a.chartArea,o=a.options,s=r.right-r.left,l=r.bottom-r.top,u=Math.min(s,l),d={x:0,y:0},h=n.getMeta(),c=h.data,f=o.cutoutPercentage,g=o.circumference,m=n._getRingWeight(n.index);if(g<2*Math.PI){var p=o.rotation%(2*Math.PI),v=(p+=2*Math.PI*(p>=Math.PI?-1:p<-Math.PI?1:0))+g,y={x:Math.cos(p),y:Math.sin(p)},b={x:Math.cos(v),y:Math.sin(v)},x=p<=0&&v>=0||p<=2*Math.PI&&2*Math.PI<=v,_=p<=.5*Math.PI&&.5*Math.PI<=v||p<=2.5*Math.PI&&2.5*Math.PI<=v,k=p<=-Math.PI&&-Math.PI<=v||p<=Math.PI&&Math.PI<=v,w=p<=.5*-Math.PI&&.5*-Math.PI<=v||p<=1.5*Math.PI&&1.5*Math.PI<=v,M=f/100,S={x:k?-1:Math.min(y.x*(y.x<0?1:M),b.x*(b.x<0?1:M)),y:w?-1:Math.min(y.y*(y.y<0?1:M),b.y*(b.y<0?1:M))},D={x:x?1:Math.max(y.x*(y.x>0?1:M),b.x*(b.x>0?1:M)),y:_?1:Math.max(y.y*(y.y>0?1:M),b.y*(b.y>0?1:M))},C={width:.5*(D.x-S.x),height:.5*(D.y-S.y)};u=Math.min(s/C.width,l/C.height),d={x:-.5*(D.x+S.x),y:-.5*(D.y+S.y)}}for(e=0,i=c.length;e<i;++e)c[e]._options=n._resolveElementOptions(c[e],e);for(a.borderWidth=n.getMaxBorderWidth(),a.outerRadius=Math.max((u-a.borderWidth)/2,0),a.innerRadius=Math.max(f?a.outerRadius/100*f:0,0),a.radiusLength=(a.outerRadius-a.innerRadius)/(n._getVisibleDatasetWeightTotal()||1),a.offsetX=d.x*a.outerRadius,a.offsetY=d.y*a.outerRadius,h.total=n.calculateTotal(),n.outerRadius=a.outerRadius-a.radiusLength*n._getRingWeightOffset(n.index),n.innerRadius=Math.max(n.outerRadius-a.radiusLength*m,0),e=0,i=c.length;e<i;++e)n.updateElement(c[e],e,t)},updateElement:function(t,e,i){var n=this,a=n.chart,r=a.chartArea,o=a.options,s=o.animation,l=(r.left+r.right)/2,u=(r.top+r.bottom)/2,d=o.rotation,h=o.rotation,c=n.getDataset(),f=i&&s.animateRotate?0:t.hidden?0:n.calculateCircumference(c.data[e])*(o.circumference/(2*Math.PI)),g=i&&s.animateScale?0:n.innerRadius,m=i&&s.animateScale?0:n.outerRadius,p=t._options||{};ut.extend(t,{_datasetIndex:n.index,_index:e,_model:{backgroundColor:p.backgroundColor,borderColor:p.borderColor,borderWidth:p.borderWidth,borderAlign:p.borderAlign,x:l+a.offsetX,y:u+a.offsetY,startAngle:d,endAngle:h,circumference:f,outerRadius:m,innerRadius:g,label:ut.valueAtIndexOrDefault(c.label,e,a.data.labels[e])}});var v=t._model;i&&s.animateRotate||(v.startAngle=0===e?o.rotation:n.getMeta().data[e-1]._model.endAngle,v.endAngle=v.startAngle+v.circumference),t.pivot()},calculateTotal:function(){var t,e=this.getDataset(),i=this.getMeta(),n=0;return ut.each(i.data,function(i,a){t=e.data[a],isNaN(t)||i.hidden||(n+=Math.abs(t))}),n},calculateCircumference:function(t){var e=this.getMeta().total;return e>0&&!isNaN(t)?2*Math.PI*(Math.abs(t)/e):0},getMaxBorderWidth:function(t){var e,i,n,a,r,o,s,l,u=0,d=this.chart;if(!t)for(e=0,i=d.data.datasets.length;e<i;++e)if(d.isDatasetVisible(e)){t=(n=d.getDatasetMeta(e)).data,e!==this.index&&(r=n.controller);break}if(!t)return 0;for(e=0,i=t.length;e<i;++e)a=t[e],"inner"!==(o=r?r._resolveElementOptions(a,e):a._options).borderAlign&&(s=o.borderWidth,u=(l=o.hoverBorderWidth)>(u=s>u?s:u)?l:u);return u},setHoverStyle:function(t){var e=t._model,i=t._options,n=ut.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth},e.backgroundColor=$t(i.hoverBackgroundColor,n(i.backgroundColor)),e.borderColor=$t(i.hoverBorderColor,n(i.borderColor)),e.borderWidth=$t(i.hoverBorderWidth,i.borderWidth)},_resolveElementOptions:function(t,e){var i,n,a,r=this.chart,o=this.getDataset(),s=t.custom||{},l=r.options.elements.arc,u={},d={chart:r,dataIndex:e,dataset:o,datasetIndex:this.index},h=["backgroundColor","borderColor","borderWidth","borderAlign","hoverBackgroundColor","hoverBorderColor","hoverBorderWidth"];for(i=0,n=h.length;i<n;++i)u[a=h[i]]=Zt([s[a],o[a],l[a]],d,e);return u},_getRingWeightOffset:function(t){for(var e=0,i=0;i<t;++i)this.chart.isDatasetVisible(i)&&(e+=this._getRingWeight(i));return e},_getRingWeight:function(t){return Math.max($t(this.chart.data.datasets[t].weight,1),0)},_getVisibleDatasetWeightTotal:function(){return this._getRingWeightOffset(this.chart.data.datasets.length)}});ot._set("horizontalBar",{hover:{mode:"index",axis:"y"},scales:{xAxes:[{type:"linear",position:"bottom"}],yAxes:[{type:"category",position:"left",categoryPercentage:.8,barPercentage:.9,offset:!0,gridLines:{offsetGridLines:!0}}]},elements:{rectangle:{borderSkipped:"left"}},tooltips:{mode:"index",axis:"y"}});var Kt=jt.extend({_getValueScaleId:function(){return this.getMeta().xAxisID},_getIndexScaleId:function(){return this.getMeta().yAxisID}}),Jt=ut.valueOrDefault,Qt=ut.options.resolve,te=ut.canvas._isPointInArea;function ee(t,e){return Jt(t.showLine,e.showLines)}ot._set("line",{showLines:!0,spanGaps:!1,hover:{mode:"label"},scales:{xAxes:[{type:"category",id:"x-axis-0"}],yAxes:[{type:"linear",id:"y-axis-0"}]}});var ie=kt.extend({datasetElementType:Nt.Line,dataElementType:Nt.Point,update:function(t){var e,i,n=this,a=n.getMeta(),r=a.dataset,o=a.data||[],s=n.getScaleForId(a.yAxisID),l=n.getDataset(),u=ee(l,n.chart.options);for(u&&(void 0!==l.tension&&void 0===l.lineTension&&(l.lineTension=l.tension),r._scale=s,r._datasetIndex=n.index,r._children=o,r._model=n._resolveLineOptions(r),r.pivot()),e=0,i=o.length;e<i;++e)n.updateElement(o[e],e,t);for(u&&0!==r._model.tension&&n.updateBezierControlPoints(),e=0,i=o.length;e<i;++e)o[e].pivot()},updateElement:function(t,e,i){var n,a,r=this,o=r.getMeta(),s=t.custom||{},l=r.getDataset(),u=r.index,d=l.data[e],h=r.getScaleForId(o.yAxisID),c=r.getScaleForId(o.xAxisID),f=o.dataset._model,g=r._resolvePointOptions(t,e);n=c.getPixelForValue("object"==typeof d?d:NaN,e,u),a=i?h.getBasePixel():r.calculatePointY(d,e,u),t._xScale=c,t._yScale=h,t._options=g,t._datasetIndex=u,t._index=e,t._model={x:n,y:a,skip:s.skip||isNaN(n)||isNaN(a),radius:g.radius,pointStyle:g.pointStyle,rotation:g.rotation,backgroundColor:g.backgroundColor,borderColor:g.borderColor,borderWidth:g.borderWidth,tension:Jt(s.tension,f?f.tension:0),steppedLine:!!f&&f.steppedLine,hitRadius:g.hitRadius}},_resolvePointOptions:function(t,e){var i,n,a,r=this.chart,o=r.data.datasets[this.index],s=t.custom||{},l=r.options.elements.point,u={},d={chart:r,dataIndex:e,dataset:o,datasetIndex:this.index},h={backgroundColor:"pointBackgroundColor",borderColor:"pointBorderColor",borderWidth:"pointBorderWidth",hitRadius:"pointHitRadius",hoverBackgroundColor:"pointHoverBackgroundColor",hoverBorderColor:"pointHoverBorderColor",hoverBorderWidth:"pointHoverBorderWidth",hoverRadius:"pointHoverRadius",pointStyle:"pointStyle",radius:"pointRadius",rotation:"pointRotation"},c=Object.keys(h);for(i=0,n=c.length;i<n;++i)u[a=c[i]]=Qt([s[a],o[h[a]],o[a],l[a]],d,e);return u},_resolveLineOptions:function(t){var e,i,n,a=this.chart,r=a.data.datasets[this.index],o=t.custom||{},s=a.options,l=s.elements.line,u={},d=["backgroundColor","borderWidth","borderColor","borderCapStyle","borderDash","borderDashOffset","borderJoinStyle","fill","cubicInterpolationMode"];for(e=0,i=d.length;e<i;++e)u[n=d[e]]=Qt([o[n],r[n],l[n]]);return 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t,e=this.chart,i=this.getMeta(),n=i.data||[],a=e.chartArea,r=n.length,o=0;for(ee(this.getDataset(),e.options)&&(t=(i.dataset._model.borderWidth||0)/2,ut.canvas.clipArea(e.ctx,{left:a.left,right:a.right,top:a.top-t,bottom:a.bottom+t}),i.dataset.draw(),ut.canvas.unclipArea(e.ctx));o<r;++o)n[o].draw(a)},setHoverStyle:function(t){var e=t._model,i=t._options,n=ut.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth,radius:e.radius},e.backgroundColor=Jt(i.hoverBackgroundColor,n(i.backgroundColor)),e.borderColor=Jt(i.hoverBorderColor,n(i.borderColor)),e.borderWidth=Jt(i.hoverBorderWidth,i.borderWidth),e.radius=Jt(i.hoverRadius,i.radius)}}),ne=ut.options.resolve;ot._set("polarArea",{scale:{type:"radialLinear",angleLines:{display:!1},gridLines:{circular:!0},pointLabels:{display:!1},ticks:{beginAtZero:!0}},animation:{animateRotate:!0,animateScale:!0},startAngle:-.5*Math.PI,legendCallback:function(t){var e=[];e.push('<ul class="'+t.id+'-legend">');var i=t.data,n=i.datasets,a=i.labels;if(n.length)for(var r=0;r<n[0].data.length;++r)e.push('<li><span style="background-color:'+n[0].backgroundColor[r]+'"></span>'),a[r]&&e.push(a[r]),e.push("</li>");return e.push("</ul>"),e.join("")},legend:{labels:{generateLabels:function(t){var e=t.data;return e.labels.length&&e.datasets.length?e.labels.map(function(i,n){var a=t.getDatasetMeta(0),r=e.datasets[0],o=a.data[n].custom||{},s=t.options.elements.arc;return{text:i,fillStyle:ne([o.backgroundColor,r.backgroundColor,s.backgroundColor],void 0,n),strokeStyle:ne([o.borderColor,r.borderColor,s.borderColor],void 0,n),lineWidth:ne([o.borderWidth,r.borderWidth,s.borderWidth],void 0,n),hidden:isNaN(r.data[n])||a.data[n].hidden,index:n}}):[]}},onClick:function(t,e){var i,n,a,r=e.index,o=this.chart;for(i=0,n=(o.data.datasets||[]).length;i<n;++i)(a=o.getDatasetMeta(i)).data[r].hidden=!a.data[r].hidden;o.update()}},tooltips:{callbacks:{title:function(){return""},label:function(t,e){return e.labels[t.index]+": "+t.yLabel}}}});var ae=kt.extend({dataElementType:Nt.Arc,linkScales:ut.noop,update:function(t){var e,i,n,a=this,r=a.getDataset(),o=a.getMeta(),s=a.chart.options.startAngle||0,l=a._starts=[],u=a._angles=[],d=o.data;for(a._updateRadius(),o.count=a.countVisibleElements(),e=0,i=r.data.length;e<i;e++)l[e]=s,n=a._computeAngle(e),u[e]=n,s+=n;for(e=0,i=d.length;e<i;++e)d[e]._options=a._resolveElementOptions(d[e],e),a.updateElement(d[e],e,t)},_updateRadius:function(){var t=this,e=t.chart,i=e.chartArea,n=e.options,a=Math.min(i.right-i.left,i.bottom-i.top);e.outerRadius=Math.max(a/2,0),e.innerRadius=Math.max(n.cutoutPercentage?e.outerRadius/100*n.cutoutPercentage:1,0),e.radiusLength=(e.outerRadius-e.innerRadius)/e.getVisibleDatasetCount(),t.outerRadius=e.outerRadius-e.radiusLength*t.index,t.innerRadius=t.outerRadius-e.radiusLength},updateElement:function(t,e,i){var n=this,a=n.chart,r=n.getDataset(),o=a.options,s=o.animation,l=a.scale,u=a.data.labels,d=l.xCenter,h=l.yCenter,c=o.startAngle,f=t.hidden?0:l.getDistanceFromCenterForValue(r.data[e]),g=n._starts[e],m=g+(t.hidden?0:n._angles[e]),p=s.animateScale?0:l.getDistanceFromCenterForValue(r.data[e]),v=t._options||{};ut.extend(t,{_datasetIndex:n.index,_index:e,_scale:l,_model:{backgroundColor:v.backgroundColor,borderColor:v.borderColor,borderWidth:v.borderWidth,borderAlign:v.borderAlign,x:d,y:h,innerRadius:0,outerRadius:i?p:f,startAngle:i&&s.animateRotate?c:g,endAngle:i&&s.animateRotate?c:m,label:ut.valueAtIndexOrDefault(u,e,u[e])}}),t.pivot()},countVisibleElements:function(){var t=this.getDataset(),e=this.getMeta(),i=0;return ut.each(e.data,function(e,n){isNaN(t.data[n])||e.hidden||i++}),i},setHoverStyle:function(t){var e=t._model,i=t._options,n=ut.getHoverColor,a=ut.valueOrDefault;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth},e.backgroundColor=a(i.hoverBackgroundColor,n(i.backgroundColor)),e.borderColor=a(i.hoverBorderColor,n(i.borderColor)),e.borderWidth=a(i.hoverBorderWidth,i.borderWidth)},_resolveElementOptions:function(t,e){var i,n,a,r=this.chart,o=this.getDataset(),s=t.custom||{},l=r.options.elements.arc,u={},d={chart:r,dataIndex:e,dataset:o,datasetIndex:this.index},h=["backgroundColor","borderColor","borderWidth","borderAlign","hoverBackgroundColor","hoverBorderColor","hoverBorderWidth"];for(i=0,n=h.length;i<n;++i)u[a=h[i]]=ne([s[a],o[a],l[a]],d,e);return u},_computeAngle:function(t){var e=this,i=this.getMeta().count,n=e.getDataset(),a=e.getMeta();if(isNaN(n.data[t])||a.data[t].hidden)return 0;var r={chart:e.chart,dataIndex:t,dataset:n,datasetIndex:e.index};return ne([e.chart.options.elements.arc.angle,2*Math.PI/i],r,t)}});ot._set("pie",ut.clone(ot.doughnut)),ot._set("pie",{cutoutPercentage:0});var re=Xt,oe=ut.valueOrDefault,se=ut.options.resolve;ot._set("radar",{scale:{type:"radialLinear"},elements:{line:{tension:0}}});var le=kt.extend({datasetElementType:Nt.Line,dataElementType:Nt.Point,linkScales:ut.noop,update:function(t){var e,i,n=this,a=n.getMeta(),r=a.dataset,o=a.data||[],s=n.chart.scale,l=n.getDataset();for(void 0!==l.tension&&void 0===l.lineTension&&(l.lineTension=l.tension),r._scale=s,r._datasetIndex=n.index,r._children=o,r._loop=!0,r._model=n._resolveLineOptions(r),r.pivot(),e=0,i=o.length;e<i;++e)n.updateElement(o[e],e,t);for(n.updateBezierControlPoints(),e=0,i=o.length;e<i;++e)o[e].pivot()},updateElement:function(t,e,i){var n=this,a=t.custom||{},r=n.getDataset(),o=n.chart.scale,s=o.getPointPositionForValue(e,r.data[e]),l=n._resolvePointOptions(t,e),u=n.getMeta().dataset._model,d=i?o.xCenter:s.x,h=i?o.yCenter:s.y;t._scale=o,t._options=l,t._datasetIndex=n.index,t._index=e,t._model={x:d,y:h,skip:a.skip||isNaN(d)||isNaN(h),radius:l.radius,pointStyle:l.pointStyle,rotation:l.rotation,backgroundColor:l.backgroundColor,borderColor:l.borderColor,borderWidth:l.borderWidth,tension:oe(a.tension,u?u.tension:0),hitRadius:l.hitRadius}},_resolvePointOptions:function(t,e){var i,n,a,r=this.chart,o=r.data.datasets[this.index],s=t.custom||{},l=r.options.elements.point,u={},d={chart:r,dataIndex:e,dataset:o,datasetIndex:this.index},h={backgroundColor:"pointBackgroundColor",borderColor:"pointBorderColor",borderWidth:"pointBorderWidth",hitRadius:"pointHitRadius",hoverBackgroundColor:"pointHoverBackgroundColor",hoverBorderColor:"pointHoverBorderColor",hoverBorderWidth:"pointHoverBorderWidth",hoverRadius:"pointHoverRadius",pointStyle:"pointStyle",radius:"pointRadius",rotation:"pointRotation"},c=Object.keys(h);for(i=0,n=c.length;i<n;++i)u[a=c[i]]=se([s[a],o[h[a]],o[a],l[a]],d,e);return u},_resolveLineOptions:function(t){var e,i,n,a=this.chart,r=a.data.datasets[this.index],o=t.custom||{},s=a.options.elements.line,l={},u=["backgroundColor","borderWidth","borderColor","borderCapStyle","borderDash","borderDashOffset","borderJoinStyle","fill"];for(e=0,i=u.length;e<i;++e)l[n=u[e]]=se([o[n],r[n],s[n]]);return l.tension=oe(r.lineTension,s.tension),l},updateBezierControlPoints:function(){var t,e,i,n,a=this.getMeta(),r=this.chart.chartArea,o=a.data||[];function s(t,e,i){return Math.max(Math.min(t,i),e)}for(t=0,e=o.length;t<e;++t)i=o[t]._model,n=ut.splineCurve(ut.previousItem(o,t,!0)._model,i,ut.nextItem(o,t,!0)._model,i.tension),i.controlPointPreviousX=s(n.previous.x,r.left,r.right),i.controlPointPreviousY=s(n.previous.y,r.top,r.bottom),i.controlPointNextX=s(n.next.x,r.left,r.right),i.controlPointNextY=s(n.next.y,r.top,r.bottom)},setHoverStyle:function(t){var e=t._model,i=t._options,n=ut.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth,radius:e.radius},e.backgroundColor=oe(i.hoverBackgroundColor,n(i.backgroundColor)),e.borderColor=oe(i.hoverBorderColor,n(i.borderColor)),e.borderWidth=oe(i.hoverBorderWidth,i.borderWidth),e.radius=oe(i.hoverRadius,i.radius)}});ot._set("scatter",{hover:{mode:"single"},scales:{xAxes:[{id:"x-axis-1",type:"linear",position:"bottom"}],yAxes:[{id:"y-axis-1",type:"linear",position:"left"}]},showLines:!1,tooltips:{callbacks:{title:function(){return""},label:function(t){return"("+t.xLabel+", "+t.yLabel+")"}}}});var ue={bar:jt,bubble:qt,doughnut:Xt,horizontalBar:Kt,line:ie,polarArea:ae,pie:re,radar:le,scatter:ie};function de(t,e){return t.native?{x:t.x,y:t.y}:ut.getRelativePosition(t,e)}function he(t,e){var i,n,a,r,o;for(n=0,r=t.data.datasets.length;n<r;++n)if(t.isDatasetVisible(n))for(a=0,o=(i=t.getDatasetMeta(n)).data.length;a<o;++a){var 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n=e.footer;n.length&&(t.x=Ze(e,e._footerAlign),t.y+=e.footerMarginTop,i.textAlign=e._footerAlign,i.textBaseline="top",i.fillStyle=e.footerFontColor,i.font=ut.fontString(e.footerFontSize,e._footerFontStyle,e._footerFontFamily),ut.each(n,function(n){i.fillText(n,t.x,t.y),t.y+=e.footerFontSize+e.footerSpacing}))},drawBackground:function(t,e,i,n){i.fillStyle=e.backgroundColor,i.strokeStyle=e.borderColor,i.lineWidth=e.borderWidth;var a=e.xAlign,r=e.yAlign,o=t.x,s=t.y,l=n.width,u=n.height,d=e.cornerRadius;i.beginPath(),i.moveTo(o+d,s),"top"===r&&this.drawCaret(t,n),i.lineTo(o+l-d,s),i.quadraticCurveTo(o+l,s,o+l,s+d),"center"===r&&"right"===a&&this.drawCaret(t,n),i.lineTo(o+l,s+u-d),i.quadraticCurveTo(o+l,s+u,o+l-d,s+u),"bottom"===r&&this.drawCaret(t,n),i.lineTo(o+d,s+u),i.quadraticCurveTo(o,s+u,o,s+u-d),"center"===r&&"left"===a&&this.drawCaret(t,n),i.lineTo(o,s+d),i.quadraticCurveTo(o,s,o+d,s),i.closePath(),i.fill(),e.borderWidth>0&&i.stroke()},draw:function(){var t=this._chart.ctx,e=this._view;if(0!==e.opacity){var i={width:e.width,height:e.height},n={x:e.x,y:e.y},a=Math.abs(e.opacity<.001)?0:e.opacity,r=e.title.length||e.beforeBody.length||e.body.length||e.afterBody.length||e.footer.length;this._options.enabled&&r&&(t.save(),t.globalAlpha=a,this.drawBackground(n,e,t,i),n.y+=e.yPadding,this.drawTitle(n,e,t),this.drawBody(n,e,t),this.drawFooter(n,e,t),t.restore())}},handleEvent:function(t){var e,i=this,n=i._options;return i._lastActive=i._lastActive||[],"mouseout"===t.type?i._active=[]:i._active=i._chart.getElementsAtEventForMode(t,n.mode,n),(e=!ut.arrayEquals(i._active,i._lastActive))&&(i._lastActive=i._active,(n.enabled||n.custom)&&(i._eventPosition={x:t.x,y:t.y},i.update(!0),i.pivot())),e}}),Ke=je,Je=Xe;Je.positioners=Ke;var Qe=ut.valueOrDefault;function ti(){return ut.merge({},[].slice.call(arguments),{merger:function(t,e,i,n){if("xAxes"===t||"yAxes"===t){var a,r,o,s=i[t].length;for(e[t]||(e[t]=[]),a=0;a<s;++a)o=i[t][a],r=Qe(o.type,"xAxes"===t?"category":"linear"),a>=e[t].length&&e[t].push({}),!e[t][a].type||o.type&&o.type!==e[t][a].type?ut.merge(e[t][a],[Ee.getScaleDefaults(r),o]):ut.merge(e[t][a],o)}else ut._merger(t,e,i,n)}})}function ei(){return ut.merge({},[].slice.call(arguments),{merger:function(t,e,i,n){var a=e[t]||{},r=i[t];"scales"===t?e[t]=ti(a,r):"scale"===t?e[t]=ut.merge(a,[Ee.getScaleDefaults(r.type),r]):ut._merger(t,e,i,n)}})}function ii(t){return"top"===t||"bottom"===t}ot._set("global",{elements:{},events:["mousemove","mouseout","click","touchstart","touchmove"],hover:{onHover:null,mode:"nearest",intersect:!0,animationDuration:400},onClick:null,maintainAspectRatio:!0,responsive:!0,responsiveAnimationDuration:0});var ni=function(t,e){return this.construct(t,e),this};ut.extend(ni.prototype,{construct:function(t,e){var i=this;e=function(t){var e=(t=t||{}).data=t.data||{};return e.datasets=e.datasets||[],e.labels=e.labels||[],t.options=ei(ot.global,ot[t.type],t.options||{}),t}(e);var n=Ve.acquireContext(t,e),a=n&&n.canvas,r=a&&a.height,o=a&&a.width;i.id=ut.uid(),i.ctx=n,i.canvas=a,i.config=e,i.width=o,i.height=r,i.aspectRatio=r?o/r:null,i.options=e.options,i._bufferedRender=!1,i.chart=i,i.controller=i,ni.instances[i.id]=i,Object.defineProperty(i,"data",{get:function(){return i.config.data},set:function(t){i.config.data=t}}),n&&a?(i.initialize(),i.update()):console.error("Failed to create chart: can't acquire context from the given item")},initialize:function(){var t=this;return He.notify(t,"beforeInit"),ut.retinaScale(t,t.options.devicePixelRatio),t.bindEvents(),t.options.responsive&&t.resize(!0),t.ensureScalesHaveIDs(),t.buildOrUpdateScales(),t.initToolTip(),He.notify(t,"afterInit"),t},clear:function(){return ut.canvas.clear(this),this},stop:function(){return vt.cancelAnimation(this),this},resize:function(t){var e=this,i=e.options,n=e.canvas,a=i.maintainAspectRatio&&e.aspectRatio||null,r=Math.max(0,Math.floor(ut.getMaximumWidth(n))),o=Math.max(0,Math.floor(a?r/a:ut.getMaximumHeight(n)));if((e.width!==r||e.height!==o)&&(n.width=e.width=r,n.height=e.height=o,n.style.width=r+"px",n.style.height=o+"px",ut.retinaScale(e,i.devicePixelRatio),!t)){var s={width:r,height:o};He.notify(e,"resize",[s]),i.onResize&&i.onResize(e,s),e.stop(),e.update({duration:i.responsiveAnimationDuration})}},ensureScalesHaveIDs:function(){var t=this.options,e=t.scales||{},i=t.scale;ut.each(e.xAxes,function(t,e){t.id=t.id||"x-axis-"+e}),ut.each(e.yAxes,function(t,e){t.id=t.id||"y-axis-"+e}),i&&(i.id=i.id||"scale")},buildOrUpdateScales:function(){var t=this,e=t.options,i=t.scales||{},n=[],a=Object.keys(i).reduce(function(t,e){return t[e]=!1,t},{});e.scales&&(n=n.concat((e.scales.xAxes||[]).map(function(t){return{options:t,dtype:"category",dposition:"bottom"}}),(e.scales.yAxes||[]).map(function(t){return{options:t,dtype:"linear",dposition:"left"}}))),e.scale&&n.push({options:e.scale,dtype:"radialLinear",isDefault:!0,dposition:"chartArea"}),ut.each(n,function(e){var n=e.options,r=n.id,o=Qe(n.type,e.dtype);ii(n.position)!==ii(e.dposition)&&(n.position=e.dposition),a[r]=!0;var s=null;if(r in i&&i[r].type===o)(s=i[r]).options=n,s.ctx=t.ctx,s.chart=t;else{var l=Ee.getScaleConstructor(o);if(!l)return;s=new l({id:r,type:o,options:n,ctx:t.ctx,chart:t}),i[s.id]=s}s.mergeTicksOptions(),e.isDefault&&(t.scale=s)}),ut.each(a,function(t,e){t||delete i[e]}),t.scales=i,Ee.addScalesToLayout(this)},buildOrUpdateControllers:function(){var t=this,e=[];return ut.each(t.data.datasets,function(i,n){var a=t.getDatasetMeta(n),r=i.type||t.config.type;if(a.type&&a.type!==r&&(t.destroyDatasetMeta(n),a=t.getDatasetMeta(n)),a.type=r,a.controller)a.controller.updateIndex(n),a.controller.linkScales();else{var o=ue[a.type];if(void 0===o)throw new Error('"'+a.type+'" is not a chart type.');a.controller=new o(t,n),e.push(a.controller)}},t),e},resetElements:function(){var t=this;ut.each(t.data.datasets,function(e,i){t.getDatasetMeta(i).controller.reset()},t)},reset:function(){this.resetElements(),this.tooltip.initialize()},update:function(t){var e,i,n=this;if(t&&"object"==typeof t||(t={duration:t,lazy:arguments[1]}),i=(e=n).options,ut.each(e.scales,function(t){xe.removeBox(e,t)}),i=ei(ot.global,ot[e.config.type],i),e.options=e.config.options=i,e.ensureScalesHaveIDs(),e.buildOrUpdateScales(),e.tooltip._options=i.tooltips,e.tooltip.initialize(),He._invalidate(n),!1!==He.notify(n,"beforeUpdate")){n.tooltip._data=n.data;var a=n.buildOrUpdateControllers();ut.each(n.data.datasets,function(t,e){n.getDatasetMeta(e).controller.buildOrUpdateElements()},n),n.updateLayout(),n.options.animation&&n.options.animation.duration&&ut.each(a,function(t){t.reset()}),n.updateDatasets(),n.tooltip.initialize(),n.lastActive=[],He.notify(n,"afterUpdate"),n._bufferedRender?n._bufferedRequest={duration:t.duration,easing:t.easing,lazy:t.lazy}:n.render(t)}},updateLayout:function(){!1!==He.notify(this,"beforeLayout")&&(xe.update(this,this.width,this.height),He.notify(this,"afterScaleUpdate"),He.notify(this,"afterLayout"))},updateDatasets:function(){if(!1!==He.notify(this,"beforeDatasetsUpdate")){for(var t=0,e=this.data.datasets.length;t<e;++t)this.updateDataset(t);He.notify(this,"afterDatasetsUpdate")}},updateDataset:function(t){var e=this.getDatasetMeta(t),i={meta:e,index:t};!1!==He.notify(this,"beforeDatasetUpdate",[i])&&(e.controller.update(),He.notify(this,"afterDatasetUpdate",[i]))},render:function(t){var e=this;t&&"object"==typeof t||(t={duration:t,lazy:arguments[1]});var i=e.options.animation,n=Qe(t.duration,i&&i.duration),a=t.lazy;if(!1!==He.notify(e,"beforeRender")){var r=function(t){He.notify(e,"afterRender"),ut.callback(i&&i.onComplete,[t],e)};if(i&&n){var o=new pt({numSteps:n/16.66,easing:t.easing||i.easing,render:function(t,e){var i=ut.easing.effects[e.easing],n=e.currentStep,a=n/e.numSteps;t.draw(i(a),a,n)},onAnimationProgress:i.onProgress,onAnimationComplete:r});vt.addAnimation(e,o,n,a)}else e.draw(),r(new pt({numSteps:0,chart:e}));return e}},draw:function(t){var e=this;e.clear(),ut.isNullOrUndef(t)&&(t=1),e.transition(t),e.width<=0||e.height<=0||!1!==He.notify(e,"beforeDraw",[t])&&(ut.each(e.boxes,function(t){t.draw(e.chartArea)},e),e.drawDatasets(t),e._drawTooltip(t),He.notify(e,"afterDraw",[t]))},transition:function(t){for(var e=0,i=(this.data.datasets||[]).length;e<i;++e)this.isDatasetVisible(e)&&this.getDatasetMeta(e).controller.transition(t);this.tooltip.transition(t)},drawDatasets:function(t){var e=this;if(!1!==He.notify(e,"beforeDatasetsDraw",[t])){for(var i=(e.data.datasets||[]).length-1;i>=0;--i)e.isDatasetVisible(i)&&e.drawDataset(i,t);He.notify(e,"afterDatasetsDraw",[t])}},drawDataset:function(t,e){var i=this.getDatasetMeta(t),n={meta:i,index:t,easingValue:e};!1!==He.notify(this,"beforeDatasetDraw",[n])&&(i.controller.draw(e),He.notify(this,"afterDatasetDraw",[n]))},_drawTooltip:function(t){var e=this.tooltip,i={tooltip:e,easingValue:t};!1!==He.notify(this,"beforeTooltipDraw",[i])&&(e.draw(),He.notify(this,"afterTooltipDraw",[i]))},getElementAtEvent:function(t){return pe.modes.single(this,t)},getElementsAtEvent:function(t){return pe.modes.label(this,t,{intersect:!0})},getElementsAtXAxis:function(t){return pe.modes["x-axis"](this,t,{intersect:!0})},getElementsAtEventForMode:function(t,e,i){var n=pe.modes[e];return"function"==typeof n?n(this,t,i):[]},getDatasetAtEvent:function(t){return pe.modes.dataset(this,t,{intersect:!0})},getDatasetMeta:function(t){var e=this.data.datasets[t];e._meta||(e._meta={});var i=e._meta[this.id];return i||(i=e._meta[this.id]={type:null,data:[],dataset:null,controller:null,hidden:null,xAxisID:null,yAxisID:null}),i},getVisibleDatasetCount:function(){for(var t=0,e=0,i=this.data.datasets.length;e<i;++e)this.isDatasetVisible(e)&&t++;return t},isDatasetVisible:function(t){var e=this.getDatasetMeta(t);return"boolean"==typeof e.hidden?!e.hidden:!this.data.datasets[t].hidden},generateLegend:function(){return this.options.legendCallback(this)},destroyDatasetMeta:function(t){var e=this.id,i=this.data.datasets[t],n=i._meta&&i._meta[e];n&&(n.controller.destroy(),delete i._meta[e])},destroy:function(){var t,e,i=this,n=i.canvas;for(i.stop(),t=0,e=i.data.datasets.length;t<e;++t)i.destroyDatasetMeta(t);n&&(i.unbindEvents(),ut.canvas.clear(i),Ve.releaseContext(i.ctx),i.canvas=null,i.ctx=null),He.notify(i,"destroy"),delete ni.instances[i.id]},toBase64Image:function(){return this.canvas.toDataURL.apply(this.canvas,arguments)},initToolTip:function(){var t=this;t.tooltip=new Je({_chart:t,_chartInstance:t,_data:t.data,_options:t.options.tooltips},t)},bindEvents:function(){var t=this,e=t._listeners={},i=function(){t.eventHandler.apply(t,arguments)};ut.each(t.options.events,function(n){Ve.addEventListener(t,n,i),e[n]=i}),t.options.responsive&&(i=function(){t.resize()},Ve.addEventListener(t,"resize",i),e.resize=i)},unbindEvents:function(){var t=this,e=t._listeners;e&&(delete t._listeners,ut.each(e,function(e,i){Ve.removeEventListener(t,i,e)}))},updateHoverStyle:function(t,e,i){var n,a,r,o=i?"setHoverStyle":"removeHoverStyle";for(a=0,r=t.length;a<r;++a)(n=t[a])&&this.getDatasetMeta(n._datasetIndex).controller[o](n)},eventHandler:function(t){var e=this,i=e.tooltip;if(!1!==He.notify(e,"beforeEvent",[t])){e._bufferedRender=!0,e._bufferedRequest=null;var n=e.handleEvent(t);i&&(n=i._start?i.handleEvent(t):n|i.handleEvent(t)),He.notify(e,"afterEvent",[t]);var a=e._bufferedRequest;return a?e.render(a):n&&!e.animating&&(e.stop(),e.render({duration:e.options.hover.animationDuration,lazy:!0})),e._bufferedRender=!1,e._bufferedRequest=null,e}},handleEvent:function(t){var e,i=this,n=i.options||{},a=n.hover;return i.lastActive=i.lastActive||[],"mouseout"===t.type?i.active=[]:i.active=i.getElementsAtEventForMode(t,a.mode,a),ut.callback(n.onHover||n.hover.onHover,[t.native,i.active],i),"mouseup"!==t.type&&"click"!==t.type||n.onClick&&n.onClick.call(i,t.native,i.active),i.lastActive.length&&i.updateHoverStyle(i.lastActive,a.mode,!1),i.active.length&&a.mode&&i.updateHoverStyle(i.active,a.mode,!0),e=!ut.arrayEquals(i.active,i.lastActive),i.lastActive=i.active,e}}),ni.instances={};var ai=ni;ni.Controller=ni,ni.types={},ut.configMerge=ei,ut.scaleMerge=ti;function ri(){throw new Error("This method is not implemented: either no adapter can be found or an incomplete integration was provided.")}function oi(t){this.options=t||{}}ut.extend(oi.prototype,{formats:ri,parse:ri,format:ri,add:ri,diff:ri,startOf:ri,endOf:ri,_create:function(t){return t}}),oi.override=function(t){ut.extend(oi.prototype,t)};var si={_date:oi},li={formatters:{values:function(t){return ut.isArray(t)?t:""+t},linear:function(t,e,i){var n=i.length>3?i[2]-i[1]:i[1]-i[0];Math.abs(n)>1&&t!==Math.floor(t)&&(n=t-Math.floor(t));var a=ut.log10(Math.abs(n)),r="";if(0!==t)if(Math.max(Math.abs(i[0]),Math.abs(i[i.length-1]))<1e-4){var o=ut.log10(Math.abs(t));r=t.toExponential(Math.floor(o)-Math.floor(a))}else{var s=-1*Math.floor(a);s=Math.max(Math.min(s,20),0),r=t.toFixed(s)}else r="0";return r},logarithmic:function(t,e,i){var n=t/Math.pow(10,Math.floor(ut.log10(t)));return 0===t?"0":1===n||2===n||5===n||0===e||e===i.length-1?t.toExponential():""}}},ui=ut.valueOrDefault,di=ut.valueAtIndexOrDefault;function hi(t){var e,i,n=[];for(e=0,i=t.length;e<i;++e)n.push(t[e].label);return n}function ci(t,e,i){return ut.isArray(e)?ut.longestText(t,i,e):t.measureText(e).width}ot._set("scale",{display:!0,position:"left",offset:!1,gridLines:{display:!0,color:"rgba(0, 0, 0, 0.1)",lineWidth:1,drawBorder:!0,drawOnChartArea:!0,drawTicks:!0,tickMarkLength:10,zeroLineWidth:1,zeroLineColor:"rgba(0,0,0,0.25)",zeroLineBorderDash:[],zeroLineBorderDashOffset:0,offsetGridLines:!1,borderDash:[],borderDashOffset:0},scaleLabel:{display:!1,labelString:"",padding:{top:4,bottom:4}},ticks:{beginAtZero:!1,minRotation:0,maxRotation:50,mirror:!1,padding:0,reverse:!1,display:!0,autoSkip:!0,autoSkipPadding:0,labelOffset:0,callback:li.formatters.values,minor:{},major:{}}});var fi=gt.extend({getPadding:function(){return{left:this.paddingLeft||0,top:this.paddingTop||0,right:this.paddingRight||0,bottom:this.paddingBottom||0}},getTicks:function(){return this._ticks},mergeTicksOptions:function(){var t=this.options.ticks;for(var e in!1===t.minor&&(t.minor={display:!1}),!1===t.major&&(t.major={display:!1}),t)"major"!==e&&"minor"!==e&&(void 0===t.minor[e]&&(t.minor[e]=t[e]),void 0===t.major[e]&&(t.major[e]=t[e]))},beforeUpdate:function(){ut.callback(this.options.beforeUpdate,[this])},update:function(t,e,i){var n,a,r,o,s,l,u=this;for(u.beforeUpdate(),u.maxWidth=t,u.maxHeight=e,u.margins=ut.extend({left:0,right:0,top:0,bottom:0},i),u._maxLabelLines=0,u.longestLabelWidth=0,u.longestTextCache=u.longestTextCache||{},u.beforeSetDimensions(),u.setDimensions(),u.afterSetDimensions(),u.beforeDataLimits(),u.determineDataLimits(),u.afterDataLimits(),u.beforeBuildTicks(),s=u.buildTicks()||[],s=u.afterBuildTicks(s)||s,u.beforeTickToLabelConversion(),r=u.convertTicksToLabels(s)||u.ticks,u.afterTickToLabelConversion(),u.ticks=r,n=0,a=r.length;n<a;++n)o=r[n],(l=s[n])?l.label=o:s.push(l={label:o,major:!1});return u._ticks=s,u.beforeCalculateTickRotation(),u.calculateTickRotation(),u.afterCalculateTickRotation(),u.beforeFit(),u.fit(),u.afterFit(),u.afterUpdate(),u.minSize},afterUpdate:function(){ut.callback(this.options.afterUpdate,[this])},beforeSetDimensions:function(){ut.callback(this.options.beforeSetDimensions,[this])},setDimensions:function(){var t=this;t.isHorizontal()?(t.width=t.maxWidth,t.left=0,t.right=t.width):(t.height=t.maxHeight,t.top=0,t.bottom=t.height),t.paddingLeft=0,t.paddingTop=0,t.paddingRight=0,t.paddingBottom=0},afterSetDimensions:function(){ut.callback(this.options.afterSetDimensions,[this])},beforeDataLimits:function(){ut.callback(this.options.beforeDataLimits,[this])},determineDataLimits:ut.noop,afterDataLimits:function(){ut.callback(this.options.afterDataLimits,[this])},beforeBuildTicks:function(){ut.callback(this.options.beforeBuildTicks,[this])},buildTicks:ut.noop,afterBuildTicks:function(t){var e=this;return ut.isArray(t)&&t.length?ut.callback(e.options.afterBuildTicks,[e,t]):(e.ticks=ut.callback(e.options.afterBuildTicks,[e,e.ticks])||e.ticks,t)},beforeTickToLabelConversion:function(){ut.callback(this.options.beforeTickToLabelConversion,[this])},convertTicksToLabels:function(){var t=this.options.ticks;this.ticks=this.ticks.map(t.userCallback||t.callback,this)},afterTickToLabelConversion:function(){ut.callback(this.options.afterTickToLabelConversion,[this])},beforeCalculateTickRotation:function(){ut.callback(this.options.beforeCalculateTickRotation,[this])},calculateTickRotation:function(){var t=this,e=t.ctx,i=t.options.ticks,n=hi(t._ticks),a=ut.options._parseFont(i);e.font=a.string;var r=i.minRotation||0;if(n.length&&t.options.display&&t.isHorizontal())for(var o,s=ut.longestText(e,a.string,n,t.longestTextCache),l=s,u=t.getPixelForTick(1)-t.getPixelForTick(0)-6;l>u&&r<i.maxRotation;){var d=ut.toRadians(r);if(o=Math.cos(d),Math.sin(d)*s>t.maxHeight){r--;break}r++,l=o*s}t.labelRotation=r},afterCalculateTickRotation:function(){ut.callback(this.options.afterCalculateTickRotation,[this])},beforeFit:function(){ut.callback(this.options.beforeFit,[this])},fit:function(){var t=this,e=t.minSize={width:0,height:0},i=hi(t._ticks),n=t.options,a=n.ticks,r=n.scaleLabel,o=n.gridLines,s=t._isVisible(),l=n.position,u=t.isHorizontal(),d=ut.options._parseFont,h=d(a),c=n.gridLines.tickMarkLength;if(e.width=u?t.isFullWidth()?t.maxWidth-t.margins.left-t.margins.right:t.maxWidth:s&&o.drawTicks?c:0,e.height=u?s&&o.drawTicks?c:0:t.maxHeight,r.display&&s){var f=d(r),g=ut.options.toPadding(r.padding),m=f.lineHeight+g.height;u?e.height+=m:e.width+=m}if(a.display&&s){var p=ut.longestText(t.ctx,h.string,i,t.longestTextCache),v=ut.numberOfLabelLines(i),y=.5*h.size,b=t.options.ticks.padding;if(t._maxLabelLines=v,t.longestLabelWidth=p,u){var x=ut.toRadians(t.labelRotation),_=Math.cos(x),k=Math.sin(x)*p+h.lineHeight*v+y;e.height=Math.min(t.maxHeight,e.height+k+b),t.ctx.font=h.string;var w,M,S=ci(t.ctx,i[0],h.string),D=ci(t.ctx,i[i.length-1],h.string),C=t.getPixelForTick(0)-t.left,P=t.right-t.getPixelForTick(i.length-1);0!==t.labelRotation?(w="bottom"===l?_*S:_*y,M="bottom"===l?_*y:_*D):(w=S/2,M=D/2),t.paddingLeft=Math.max(w-C,0)+3,t.paddingRight=Math.max(M-P,0)+3}else a.mirror?p=0:p+=b+y,e.width=Math.min(t.maxWidth,e.width+p),t.paddingTop=h.size/2,t.paddingBottom=h.size/2}t.handleMargins(),t.width=e.width,t.height=e.height},handleMargins:function(){var t=this;t.margins&&(t.paddingLeft=Math.max(t.paddingLeft-t.margins.left,0),t.paddingTop=Math.max(t.paddingTop-t.margins.top,0),t.paddingRight=Math.max(t.paddingRight-t.margins.right,0),t.paddingBottom=Math.max(t.paddingBottom-t.margins.bottom,0))},afterFit:function(){ut.callback(this.options.afterFit,[this])},isHorizontal:function(){return"top"===this.options.position||"bottom"===this.options.position},isFullWidth:function(){return this.options.fullWidth},getRightValue:function(t){if(ut.isNullOrUndef(t))return NaN;if(("number"==typeof t||t instanceof Number)&&!isFinite(t))return NaN;if(t)if(this.isHorizontal()){if(void 0!==t.x)return this.getRightValue(t.x)}else if(void 0!==t.y)return this.getRightValue(t.y);return t},getLabelForIndex:ut.noop,getPixelForValue:ut.noop,getValueForPixel:ut.noop,getPixelForTick:function(t){var e=this,i=e.options.offset;if(e.isHorizontal()){var n=(e.width-(e.paddingLeft+e.paddingRight))/Math.max(e._ticks.length-(i?0:1),1),a=n*t+e.paddingLeft;i&&(a+=n/2);var r=e.left+a;return r+=e.isFullWidth()?e.margins.left:0}var o=e.height-(e.paddingTop+e.paddingBottom);return e.top+t*(o/(e._ticks.length-1))},getPixelForDecimal:function(t){var e=this;if(e.isHorizontal()){var i=(e.width-(e.paddingLeft+e.paddingRight))*t+e.paddingLeft,n=e.left+i;return n+=e.isFullWidth()?e.margins.left:0}return e.top+t*e.height},getBasePixel:function(){return this.getPixelForValue(this.getBaseValue())},getBaseValue:function(){var t=this.min,e=this.max;return this.beginAtZero?0:t<0&&e<0?e:t>0&&e>0?t:0},_autoSkip:function(t){var e,i,n=this,a=n.isHorizontal(),r=n.options.ticks.minor,o=t.length,s=!1,l=r.maxTicksLimit,u=n._tickSize()*(o-1),d=a?n.width-(n.paddingLeft+n.paddingRight):n.height-(n.paddingTop+n.PaddingBottom),h=[];for(u>d&&(s=1+Math.floor(u/d)),o>l&&(s=Math.max(s,1+Math.floor(o/l))),e=0;e<o;e++)i=t[e],s>1&&e%s>0&&delete i.label,h.push(i);return h},_tickSize:function(){var t=this,e=t.isHorizontal(),i=t.options.ticks.minor,n=ut.toRadians(t.labelRotation),a=Math.abs(Math.cos(n)),r=Math.abs(Math.sin(n)),o=i.autoSkipPadding||0,s=t.longestLabelWidth+o||0,l=ut.options._parseFont(i),u=t._maxLabelLines*l.lineHeight+o||0;return e?u*a>s*r?s/a:u/r:u*r<s*a?u/a:s/r},_isVisible:function(){var t,e,i,n=this.chart,a=this.options.display;if("auto"!==a)return!!a;for(t=0,e=n.data.datasets.length;t<e;++t)if(n.isDatasetVisible(t)&&((i=n.getDatasetMeta(t)).xAxisID===this.id||i.yAxisID===this.id))return!0;return!1},draw:function(t){var e=this,i=e.options;if(e._isVisible()){var n,a,r,o=e.chart,s=e.ctx,l=ot.global.defaultFontColor,u=i.ticks.minor,d=i.ticks.major||u,h=i.gridLines,c=i.scaleLabel,f=i.position,g=0!==e.labelRotation,m=u.mirror,p=e.isHorizontal(),v=ut.options._parseFont,y=u.display&&u.autoSkip?e._autoSkip(e.getTicks()):e.getTicks(),b=ui(u.fontColor,l),x=v(u),_=x.lineHeight,k=ui(d.fontColor,l),w=v(d),M=u.padding,S=u.labelOffset,D=h.drawTicks?h.tickMarkLength:0,C=ui(c.fontColor,l),P=v(c),T=ut.options.toPadding(c.padding),O=ut.toRadians(e.labelRotation),I=[],A=h.drawBorder?di(h.lineWidth,0,0):0,F=ut._alignPixel;"top"===f?(n=F(o,e.bottom,A),a=e.bottom-D,r=n-A/2):"bottom"===f?(n=F(o,e.top,A),a=n+A/2,r=e.top+D):"left"===f?(n=F(o,e.right,A),a=e.right-D,r=n-A/2):(n=F(o,e.left,A),a=n+A/2,r=e.left+D);if(ut.each(y,function(n,s){if(!ut.isNullOrUndef(n.label)){var l,u,d,c,v,y,b,x,k,w,C,P,T,R,L,W,Y=n.label;s===e.zeroLineIndex&&i.offset===h.offsetGridLines?(l=h.zeroLineWidth,u=h.zeroLineColor,d=h.zeroLineBorderDash||[],c=h.zeroLineBorderDashOffset||0):(l=di(h.lineWidth,s),u=di(h.color,s),d=h.borderDash||[],c=h.borderDashOffset||0);var N=ut.isArray(Y)?Y.length:1,z=function(t,e,i){var n=t.getPixelForTick(e);return i&&(1===t.getTicks().length?n-=t.isHorizontal()?Math.max(n-t.left,t.right-n):Math.max(n-t.top,t.bottom-n):n-=0===e?(t.getPixelForTick(1)-n)/2:(n-t.getPixelForTick(e-1))/2),n}(e,s,h.offsetGridLines);if(p){var V=D+M;z<e.left-1e-7&&(u="rgba(0,0,0,0)"),v=b=k=C=F(o,z,l),y=a,x=r,T=e.getPixelForTick(s)+S,"top"===f?(w=F(o,t.top,A)+A/2,P=t.bottom,L=((g?1:.5)-N)*_,W=g?"left":"center",R=e.bottom-V):(w=t.top,P=F(o,t.bottom,A)-A/2,L=(g?0:.5)*_,W=g?"right":"center",R=e.top+V)}else{var H=(m?0:D)+M;z<e.top-1e-7&&(u="rgba(0,0,0,0)"),v=a,b=r,y=x=w=P=F(o,z,l),R=e.getPixelForTick(s)+S,L=(1-N)*_/2,"left"===f?(k=F(o,t.left,A)+A/2,C=t.right,W=m?"left":"right",T=e.right-H):(k=t.left,C=F(o,t.right,A)-A/2,W=m?"right":"left",T=e.left+H)}I.push({tx1:v,ty1:y,tx2:b,ty2:x,x1:k,y1:w,x2:C,y2:P,labelX:T,labelY:R,glWidth:l,glColor:u,glBorderDash:d,glBorderDashOffset:c,rotation:-1*O,label:Y,major:n.major,textOffset:L,textAlign:W})}}),ut.each(I,function(t){var e=t.glWidth,i=t.glColor;if(h.display&&e&&i&&(s.save(),s.lineWidth=e,s.strokeStyle=i,s.setLineDash&&(s.setLineDash(t.glBorderDash),s.lineDashOffset=t.glBorderDashOffset),s.beginPath(),h.drawTicks&&(s.moveTo(t.tx1,t.ty1),s.lineTo(t.tx2,t.ty2)),h.drawOnChartArea&&(s.moveTo(t.x1,t.y1),s.lineTo(t.x2,t.y2)),s.stroke(),s.restore()),u.display){s.save(),s.translate(t.labelX,t.labelY),s.rotate(t.rotation),s.font=t.major?w.string:x.string,s.fillStyle=t.major?k:b,s.textBaseline="middle",s.textAlign=t.textAlign;var n=t.label,a=t.textOffset;if(ut.isArray(n))for(var r=0;r<n.length;++r)s.fillText(""+n[r],0,a),a+=_;else s.fillText(n,0,a);s.restore()}}),c.display){var R,L,W=0,Y=P.lineHeight/2;if(p)R=e.left+(e.right-e.left)/2,L="bottom"===f?e.bottom-Y-T.bottom:e.top+Y+T.top;else{var N="left"===f;R=N?e.left+Y+T.top:e.right-Y-T.top,L=e.top+(e.bottom-e.top)/2,W=N?-.5*Math.PI:.5*Math.PI}s.save(),s.translate(R,L),s.rotate(W),s.textAlign="center",s.textBaseline="middle",s.fillStyle=C,s.font=P.string,s.fillText(c.labelString,0,0),s.restore()}if(A){var z,V,H,E,B=A,j=di(h.lineWidth,y.length-1,0);p?(z=F(o,e.left,B)-B/2,V=F(o,e.right,j)+j/2,H=E=n):(H=F(o,e.top,B)-B/2,E=F(o,e.bottom,j)+j/2,z=V=n),s.lineWidth=A,s.strokeStyle=di(h.color,0),s.beginPath(),s.moveTo(z,H),s.lineTo(V,E),s.stroke()}}}}),gi=fi.extend({getLabels:function(){var t=this.chart.data;return this.options.labels||(this.isHorizontal()?t.xLabels:t.yLabels)||t.labels},determineDataLimits:function(){var t,e=this,i=e.getLabels();e.minIndex=0,e.maxIndex=i.length-1,void 0!==e.options.ticks.min&&(t=i.indexOf(e.options.ticks.min),e.minIndex=-1!==t?t:e.minIndex),void 0!==e.options.ticks.max&&(t=i.indexOf(e.options.ticks.max),e.maxIndex=-1!==t?t:e.maxIndex),e.min=i[e.minIndex],e.max=i[e.maxIndex]},buildTicks:function(){var t=this,e=t.getLabels();t.ticks=0===t.minIndex&&t.maxIndex===e.length-1?e:e.slice(t.minIndex,t.maxIndex+1)},getLabelForIndex:function(t,e){var i=this,n=i.chart;return n.getDatasetMeta(e).controller._getValueScaleId()===i.id?i.getRightValue(n.data.datasets[e].data[t]):i.ticks[t-i.minIndex]},getPixelForValue:function(t,e){var i,n=this,a=n.options.offset,r=Math.max(n.maxIndex+1-n.minIndex-(a?0:1),1);if(null!=t&&(i=n.isHorizontal()?t.x:t.y),void 0!==i||void 0!==t&&isNaN(e)){t=i||t;var o=n.getLabels().indexOf(t);e=-1!==o?o:e}if(n.isHorizontal()){var s=n.width/r,l=s*(e-n.minIndex);return a&&(l+=s/2),n.left+l}var u=n.height/r,d=u*(e-n.minIndex);return a&&(d+=u/2),n.top+d},getPixelForTick:function(t){return this.getPixelForValue(this.ticks[t],t+this.minIndex,null)},getValueForPixel:function(t){var e=this,i=e.options.offset,n=Math.max(e._ticks.length-(i?0:1),1),a=e.isHorizontal(),r=(a?e.width:e.height)/n;return t-=a?e.left:e.top,i&&(t-=r/2),(t<=0?0:Math.round(t/r))+e.minIndex},getBasePixel:function(){return this.bottom}}),mi={position:"bottom"};gi._defaults=mi;var pi=ut.noop,vi=ut.isNullOrUndef;var yi=fi.extend({getRightValue:function(t){return"string"==typeof t?+t:fi.prototype.getRightValue.call(this,t)},handleTickRangeOptions:function(){var t=this,e=t.options.ticks;if(e.beginAtZero){var i=ut.sign(t.min),n=ut.sign(t.max);i<0&&n<0?t.max=0:i>0&&n>0&&(t.min=0)}var a=void 0!==e.min||void 0!==e.suggestedMin,r=void 0!==e.max||void 0!==e.suggestedMax;void 0!==e.min?t.min=e.min:void 0!==e.suggestedMin&&(null===t.min?t.min=e.suggestedMin:t.min=Math.min(t.min,e.suggestedMin)),void 0!==e.max?t.max=e.max:void 0!==e.suggestedMax&&(null===t.max?t.max=e.suggestedMax:t.max=Math.max(t.max,e.suggestedMax)),a!==r&&t.min>=t.max&&(a?t.max=t.min+1:t.min=t.max-1),t.min===t.max&&(t.max++,e.beginAtZero||t.min--)},getTickLimit:function(){var t,e=this.options.ticks,i=e.stepSize,n=e.maxTicksLimit;return i?t=Math.ceil(this.max/i)-Math.floor(this.min/i)+1:(t=this._computeTickLimit(),n=n||11),n&&(t=Math.min(n,t)),t},_computeTickLimit:function(){return Number.POSITIVE_INFINITY},handleDirectionalChanges:pi,buildTicks:function(){var t=this,e=t.options.ticks,i=t.getTickLimit(),n={maxTicks:i=Math.max(2,i),min:e.min,max:e.max,precision:e.precision,stepSize:ut.valueOrDefault(e.fixedStepSize,e.stepSize)},a=t.ticks=function(t,e){var i,n,a,r,o=[],s=t.stepSize,l=s||1,u=t.maxTicks-1,d=t.min,h=t.max,c=t.precision,f=e.min,g=e.max,m=ut.niceNum((g-f)/u/l)*l;if(m<1e-14&&vi(d)&&vi(h))return[f,g];(r=Math.ceil(g/m)-Math.floor(f/m))>u&&(m=ut.niceNum(r*m/u/l)*l),s||vi(c)?i=Math.pow(10,ut._decimalPlaces(m)):(i=Math.pow(10,c),m=Math.ceil(m*i)/i),n=Math.floor(f/m)*m,a=Math.ceil(g/m)*m,s&&(!vi(d)&&ut.almostWhole(d/m,m/1e3)&&(n=d),!vi(h)&&ut.almostWhole(h/m,m/1e3)&&(a=h)),r=(a-n)/m,r=ut.almostEquals(r,Math.round(r),m/1e3)?Math.round(r):Math.ceil(r),n=Math.round(n*i)/i,a=Math.round(a*i)/i,o.push(vi(d)?n:d);for(var p=1;p<r;++p)o.push(Math.round((n+p*m)*i)/i);return o.push(vi(h)?a:h),o}(n,t);t.handleDirectionalChanges(),t.max=ut.max(a),t.min=ut.min(a),e.reverse?(a.reverse(),t.start=t.max,t.end=t.min):(t.start=t.min,t.end=t.max)},convertTicksToLabels:function(){var t=this;t.ticksAsNumbers=t.ticks.slice(),t.zeroLineIndex=t.ticks.indexOf(0),fi.prototype.convertTicksToLabels.call(t)}}),bi={position:"left",ticks:{callback:li.formatters.linear}},xi=yi.extend({determineDataLimits:function(){var t=this,e=t.options,i=t.chart,n=i.data.datasets,a=t.isHorizontal();function r(e){return a?e.xAxisID===t.id:e.yAxisID===t.id}t.min=null,t.max=null;var o=e.stacked;if(void 0===o&&ut.each(n,function(t,e){if(!o){var n=i.getDatasetMeta(e);i.isDatasetVisible(e)&&r(n)&&void 0!==n.stack&&(o=!0)}}),e.stacked||o){var s={};ut.each(n,function(n,a){var o=i.getDatasetMeta(a),l=[o.type,void 0===e.stacked&&void 0===o.stack?a:"",o.stack].join(".");void 0===s[l]&&(s[l]={positiveValues:[],negativeValues:[]});var u=s[l].positiveValues,d=s[l].negativeValues;i.isDatasetVisible(a)&&r(o)&&ut.each(n.data,function(i,n){var a=+t.getRightValue(i);isNaN(a)||o.data[n].hidden||(u[n]=u[n]||0,d[n]=d[n]||0,e.relativePoints?u[n]=100:a<0?d[n]+=a:u[n]+=a)})}),ut.each(s,function(e){var i=e.positiveValues.concat(e.negativeValues),n=ut.min(i),a=ut.max(i);t.min=null===t.min?n:Math.min(t.min,n),t.max=null===t.max?a:Math.max(t.max,a)})}else ut.each(n,function(e,n){var a=i.getDatasetMeta(n);i.isDatasetVisible(n)&&r(a)&&ut.each(e.data,function(e,i){var n=+t.getRightValue(e);isNaN(n)||a.data[i].hidden||(null===t.min?t.min=n:n<t.min&&(t.min=n),null===t.max?t.max=n:n>t.max&&(t.max=n))})});t.min=isFinite(t.min)&&!isNaN(t.min)?t.min:0,t.max=isFinite(t.max)&&!isNaN(t.max)?t.max:1,this.handleTickRangeOptions()},_computeTickLimit:function(){var t;return this.isHorizontal()?Math.ceil(this.width/40):(t=ut.options._parseFont(this.options.ticks),Math.ceil(this.height/t.lineHeight))},handleDirectionalChanges:function(){this.isHorizontal()||this.ticks.reverse()},getLabelForIndex:function(t,e){return+this.getRightValue(this.chart.data.datasets[e].data[t])},getPixelForValue:function(t){var e=this,i=e.start,n=+e.getRightValue(t),a=e.end-i;return e.isHorizontal()?e.left+e.width/a*(n-i):e.bottom-e.height/a*(n-i)},getValueForPixel:function(t){var e=this,i=e.isHorizontal(),n=i?e.width:e.height,a=(i?t-e.left:e.bottom-t)/n;return e.start+(e.end-e.start)*a},getPixelForTick:function(t){return this.getPixelForValue(this.ticksAsNumbers[t])}}),_i=bi;xi._defaults=_i;var ki=ut.valueOrDefault;var wi={position:"left",ticks:{callback:li.formatters.logarithmic}};function Mi(t,e){return ut.isFinite(t)&&t>=0?t:e}var Si=fi.extend({determineDataLimits:function(){var t=this,e=t.options,i=t.chart,n=i.data.datasets,a=t.isHorizontal();function r(e){return a?e.xAxisID===t.id:e.yAxisID===t.id}t.min=null,t.max=null,t.minNotZero=null;var o=e.stacked;if(void 0===o&&ut.each(n,function(t,e){if(!o){var n=i.getDatasetMeta(e);i.isDatasetVisible(e)&&r(n)&&void 0!==n.stack&&(o=!0)}}),e.stacked||o){var s={};ut.each(n,function(n,a){var o=i.getDatasetMeta(a),l=[o.type,void 0===e.stacked&&void 0===o.stack?a:"",o.stack].join(".");i.isDatasetVisible(a)&&r(o)&&(void 0===s[l]&&(s[l]=[]),ut.each(n.data,function(e,i){var n=s[l],a=+t.getRightValue(e);isNaN(a)||o.data[i].hidden||a<0||(n[i]=n[i]||0,n[i]+=a)}))}),ut.each(s,function(e){if(e.length>0){var i=ut.min(e),n=ut.max(e);t.min=null===t.min?i:Math.min(t.min,i),t.max=null===t.max?n:Math.max(t.max,n)}})}else ut.each(n,function(e,n){var a=i.getDatasetMeta(n);i.isDatasetVisible(n)&&r(a)&&ut.each(e.data,function(e,i){var n=+t.getRightValue(e);isNaN(n)||a.data[i].hidden||n<0||(null===t.min?t.min=n:n<t.min&&(t.min=n),null===t.max?t.max=n:n>t.max&&(t.max=n),0!==n&&(null===t.minNotZero||n<t.minNotZero)&&(t.minNotZero=n))})});this.handleTickRangeOptions()},handleTickRangeOptions:function(){var t=this,e=t.options.ticks;t.min=Mi(e.min,t.min),t.max=Mi(e.max,t.max),t.min===t.max&&(0!==t.min&&null!==t.min?(t.min=Math.pow(10,Math.floor(ut.log10(t.min))-1),t.max=Math.pow(10,Math.floor(ut.log10(t.max))+1)):(t.min=1,t.max=10)),null===t.min&&(t.min=Math.pow(10,Math.floor(ut.log10(t.max))-1)),null===t.max&&(t.max=0!==t.min?Math.pow(10,Math.floor(ut.log10(t.min))+1):10),null===t.minNotZero&&(t.min>0?t.minNotZero=t.min:t.max<1?t.minNotZero=Math.pow(10,Math.floor(ut.log10(t.max))):t.minNotZero=1)},buildTicks:function(){var t=this,e=t.options.ticks,i=!t.isHorizontal(),n={min:Mi(e.min),max:Mi(e.max)},a=t.ticks=function(t,e){var i,n,a=[],r=ki(t.min,Math.pow(10,Math.floor(ut.log10(e.min)))),o=Math.floor(ut.log10(e.max)),s=Math.ceil(e.max/Math.pow(10,o));0===r?(i=Math.floor(ut.log10(e.minNotZero)),n=Math.floor(e.minNotZero/Math.pow(10,i)),a.push(r),r=n*Math.pow(10,i)):(i=Math.floor(ut.log10(r)),n=Math.floor(r/Math.pow(10,i)));var l=i<0?Math.pow(10,Math.abs(i)):1;do{a.push(r),10==++n&&(n=1,l=++i>=0?1:l),r=Math.round(n*Math.pow(10,i)*l)/l}while(i<o||i===o&&n<s);var u=ki(t.max,r);return a.push(u),a}(n,t);t.max=ut.max(a),t.min=ut.min(a),e.reverse?(i=!i,t.start=t.max,t.end=t.min):(t.start=t.min,t.end=t.max),i&&a.reverse()},convertTicksToLabels:function(){this.tickValues=this.ticks.slice(),fi.prototype.convertTicksToLabels.call(this)},getLabelForIndex:function(t,e){return+this.getRightValue(this.chart.data.datasets[e].data[t])},getPixelForTick:function(t){return this.getPixelForValue(this.tickValues[t])},_getFirstTickValue:function(t){var e=Math.floor(ut.log10(t));return Math.floor(t/Math.pow(10,e))*Math.pow(10,e)},getPixelForValue:function(t){var e,i,n,a,r,o=this,s=o.options.ticks,l=s.reverse,u=ut.log10,d=o._getFirstTickValue(o.minNotZero),h=0;return t=+o.getRightValue(t),l?(n=o.end,a=o.start,r=-1):(n=o.start,a=o.end,r=1),o.isHorizontal()?(e=o.width,i=l?o.right:o.left):(e=o.height,r*=-1,i=l?o.top:o.bottom),t!==n&&(0===n&&(e-=h=ki(s.fontSize,ot.global.defaultFontSize),n=d),0!==t&&(h+=e/(u(a)-u(n))*(u(t)-u(n))),i+=r*h),i},getValueForPixel:function(t){var e,i,n,a,r=this,o=r.options.ticks,s=o.reverse,l=ut.log10,u=r._getFirstTickValue(r.minNotZero);if(s?(i=r.end,n=r.start):(i=r.start,n=r.end),r.isHorizontal()?(e=r.width,a=s?r.right-t:t-r.left):(e=r.height,a=s?t-r.top:r.bottom-t),a!==i){if(0===i){var d=ki(o.fontSize,ot.global.defaultFontSize);a-=d,e-=d,i=u}a*=l(n)-l(i),a/=e,a=Math.pow(10,l(i)+a)}return a}}),Di=wi;Si._defaults=Di;var Ci=ut.valueOrDefault,Pi=ut.valueAtIndexOrDefault,Ti=ut.options.resolve,Oi={display:!0,animate:!0,position:"chartArea",angleLines:{display:!0,color:"rgba(0, 0, 0, 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t=this;t.width=t.maxWidth,t.height=t.maxHeight,t.paddingTop=Ai(t.options)/2,t.xCenter=Math.floor(t.width/2),t.yCenter=Math.floor((t.height-t.paddingTop)/2),t.drawingArea=Math.min(t.height-t.paddingTop,t.width)/2},determineDataLimits:function(){var t=this,e=t.chart,i=Number.POSITIVE_INFINITY,n=Number.NEGATIVE_INFINITY;ut.each(e.data.datasets,function(a,r){if(e.isDatasetVisible(r)){var o=e.getDatasetMeta(r);ut.each(a.data,function(e,a){var r=+t.getRightValue(e);isNaN(r)||o.data[a].hidden||(i=Math.min(r,i),n=Math.max(r,n))})}}),t.min=i===Number.POSITIVE_INFINITY?0:i,t.max=n===Number.NEGATIVE_INFINITY?0:n,t.handleTickRangeOptions()},_computeTickLimit:function(){return Math.ceil(this.drawingArea/Ai(this.options))},convertTicksToLabels:function(){var t=this;yi.prototype.convertTicksToLabels.call(t),t.pointLabels=t.chart.data.labels.map(t.options.pointLabels.callback,t)},getLabelForIndex:function(t,e){return+this.getRightValue(this.chart.data.datasets[e].data[t])},fit:function(){var t=this.options;t.display&&t.pointLabels.display?function(t){var e,i,n,a=ut.options._parseFont(t.options.pointLabels),r={l:0,r:t.width,t:0,b:t.height-t.paddingTop},o={};t.ctx.font=a.string,t._pointLabelSizes=[];var s,l,u,d=Ii(t);for(e=0;e<d;e++){n=t.getPointPosition(e,t.drawingArea+5),s=t.ctx,l=a.lineHeight,u=t.pointLabels[e]||"",i=ut.isArray(u)?{w:ut.longestText(s,s.font,u),h:u.length*l}:{w:s.measureText(u).width,h:l},t._pointLabelSizes[e]=i;var h=t.getIndexAngle(e),c=ut.toDegrees(h)%360,f=Fi(c,n.x,i.w,0,180),g=Fi(c,n.y,i.h,90,270);f.start<r.l&&(r.l=f.start,o.l=h),f.end>r.r&&(r.r=f.end,o.r=h),g.start<r.t&&(r.t=g.start,o.t=h),g.end>r.b&&(r.b=g.end,o.b=h)}t.setReductions(t.drawingArea,r,o)}(this):this.setCenterPoint(0,0,0,0)},setReductions:function(t,e,i){var n=this,a=e.l/Math.sin(i.l),r=Math.max(e.r-n.width,0)/Math.sin(i.r),o=-e.t/Math.cos(i.t),s=-Math.max(e.b-(n.height-n.paddingTop),0)/Math.cos(i.b);a=Yi(a),r=Yi(r),o=Yi(o),s=Yi(s),n.drawingArea=Math.min(Math.floor(t-(a+r)/2),Math.floor(t-(o+s)/2)),n.setCenterPoint(a,r,o,s)},setCenterPoint:function(t,e,i,n){var a=this,r=a.width-e-a.drawingArea,o=t+a.drawingArea,s=i+a.drawingArea,l=a.height-a.paddingTop-n-a.drawingArea;a.xCenter=Math.floor((o+r)/2+a.left),a.yCenter=Math.floor((s+l)/2+a.top+a.paddingTop)},getIndexAngle:function(t){return t*(2*Math.PI/Ii(this))+(this.chart.options&&this.chart.options.startAngle?this.chart.options.startAngle:0)*Math.PI*2/360},getDistanceFromCenterForValue:function(t){var e=this;if(null===t)return 0;var i=e.drawingArea/(e.max-e.min);return e.options.ticks.reverse?(e.max-t)*i:(t-e.min)*i},getPointPosition:function(t,e){var i=this.getIndexAngle(t)-Math.PI/2;return{x:Math.cos(i)*e+this.xCenter,y:Math.sin(i)*e+this.yCenter}},getPointPositionForValue:function(t,e){return this.getPointPosition(t,this.getDistanceFromCenterForValue(e))},getBasePosition:function(){var t=this.min,e=this.max;return this.getPointPositionForValue(0,this.beginAtZero?0:t<0&&e<0?e:t>0&&e>0?t:0)},draw:function(){var t=this,e=t.options,i=e.gridLines,n=e.ticks;if(e.display){var a=t.ctx,r=this.getIndexAngle(0),o=ut.options._parseFont(n);(e.angleLines.display||e.pointLabels.display)&&function(t){var e=t.ctx,i=t.options,n=i.angleLines,a=i.gridLines,r=i.pointLabels,o=Ci(n.lineWidth,a.lineWidth),s=Ci(n.color,a.color),l=Ai(i);e.save(),e.lineWidth=o,e.strokeStyle=s,e.setLineDash&&(e.setLineDash(Ti([n.borderDash,a.borderDash,[]])),e.lineDashOffset=Ti([n.borderDashOffset,a.borderDashOffset,0]));var u=t.getDistanceFromCenterForValue(i.ticks.reverse?t.min:t.max),d=ut.options._parseFont(r);e.font=d.string,e.textBaseline="middle";for(var h=Ii(t)-1;h>=0;h--){if(n.display&&o&&s){var c=t.getPointPosition(h,u);e.beginPath(),e.moveTo(t.xCenter,t.yCenter),e.lineTo(c.x,c.y),e.stroke()}if(r.display){var f=0===h?l/2:0,g=t.getPointPosition(h,u+f+5),m=Pi(r.fontColor,h,ot.global.defaultFontColor);e.fillStyle=m;var p=t.getIndexAngle(h),v=ut.toDegrees(p);e.textAlign=Ri(v),Wi(v,t._pointLabelSizes[h],g),Li(e,t.pointLabels[h]||"",g,d.lineHeight)}}e.restore()}(t),ut.each(t.ticks,function(e,s){if(s>0||n.reverse){var l=t.getDistanceFromCenterForValue(t.ticksAsNumbers[s]);if(i.display&&0!==s&&function(t,e,i,n){var a,r=t.ctx,o=e.circular,s=Ii(t),l=Pi(e.color,n-1),u=Pi(e.lineWidth,n-1);if((o||s)&&l&&u){if(r.save(),r.strokeStyle=l,r.lineWidth=u,r.setLineDash&&(r.setLineDash(e.borderDash||[]),r.lineDashOffset=e.borderDashOffset||0),r.beginPath(),o)r.arc(t.xCenter,t.yCenter,i,0,2*Math.PI);else{a=t.getPointPosition(0,i),r.moveTo(a.x,a.y);for(var d=1;d<s;d++)a=t.getPointPosition(d,i),r.lineTo(a.x,a.y)}r.closePath(),r.stroke(),r.restore()}}(t,i,l,s),n.display){var u=Ci(n.fontColor,ot.global.defaultFontColor);if(a.font=o.string,a.save(),a.translate(t.xCenter,t.yCenter),a.rotate(r),n.showLabelBackdrop){var d=a.measureText(e).width;a.fillStyle=n.backdropColor,a.fillRect(-d/2-n.backdropPaddingX,-l-o.size/2-n.backdropPaddingY,d+2*n.backdropPaddingX,o.size+2*n.backdropPaddingY)}a.textAlign="center",a.textBaseline="middle",a.fillStyle=u,a.fillText(e,0,-l),a.restore()}}})}}}),zi=Oi;Ni._defaults=zi;var Vi=ut.valueOrDefault,Hi=Number.MIN_SAFE_INTEGER||-9007199254740991,Ei=Number.MAX_SAFE_INTEGER||9007199254740991,Bi={millisecond:{common:!0,size:1,steps:[1,2,5,10,20,50,100,250,500]},second:{common:!0,size:1e3,steps:[1,2,5,10,15,30]},minute:{common:!0,size:6e4,steps:[1,2,5,10,15,30]},hour:{common:!0,size:36e5,steps:[1,2,3,6,12]},day:{common:!0,size:864e5,steps:[1,2,5]},week:{common:!1,size:6048e5,steps:[1,2,3,4]},month:{common:!0,size:2628e6,steps:[1,2,3]},quarter:{common:!1,size:7884e6,steps:[1,2,3,4]},year:{common:!0,size:3154e7}},ji=Object.keys(Bi);function Ui(t,e){return t-e}function Gi(t){var e,i,n,a={},r=[];for(e=0,i=t.length;e<i;++e)a[n=t[e]]||(a[n]=!0,r.push(n));return r}function qi(t,e,i,n){var a=function(t,e,i){for(var n,a,r,o=0,s=t.length-1;o>=0&&o<=s;){if(a=t[(n=o+s>>1)-1]||null,r=t[n],!a)return{lo:null,hi:r};if(r[e]<i)o=n+1;else{if(!(a[e]>i))return{lo:a,hi:r};s=n-1}}return{lo:r,hi:null}}(t,e,i),r=a.lo?a.hi?a.lo:t[t.length-2]:t[0],o=a.lo?a.hi?a.hi:t[t.length-1]:t[1],s=o[e]-r[e],l=s?(i-r[e])/s:0,u=(o[n]-r[n])*l;return r[n]+u}function Zi(t,e){var i=t._adapter,n=t.options.time,a=n.parser,r=a||n.format,o=e;return"function"==typeof a&&(o=a(o)),ut.isFinite(o)||(o="string"==typeof r?i.parse(o,r):i.parse(o)),null!==o?+o:(a||"function"!=typeof r||(o=r(e),ut.isFinite(o)||(o=i.parse(o))),o)}function $i(t,e){if(ut.isNullOrUndef(e))return null;var i=t.options.time,n=Zi(t,t.getRightValue(e));return null===n?n:(i.round&&(n=+t._adapter.startOf(n,i.round)),n)}function Xi(t){for(var e=ji.indexOf(t)+1,i=ji.length;e<i;++e)if(Bi[ji[e]].common)return ji[e]}function Ki(t,e,i,n){var a,r=t._adapter,o=t.options,s=o.time,l=s.unit||function(t,e,i,n){var a,r,o,s=ji.length;for(a=ji.indexOf(t);a<s-1;++a)if(o=(r=Bi[ji[a]]).steps?r.steps[r.steps.length-1]:Ei,r.common&&Math.ceil((i-e)/(o*r.size))<=n)return ji[a];return ji[s-1]}(s.minUnit,e,i,n),u=Xi(l),d=Vi(s.stepSize,s.unitStepSize),h="week"===l&&s.isoWeekday,c=o.ticks.major.enabled,f=Bi[l],g=e,m=i,p=[];for(d||(d=function(t,e,i,n){var a,r,o,s=e-t,l=Bi[i],u=l.size,d=l.steps;if(!d)return Math.ceil(s/(n*u));for(a=0,r=d.length;a<r&&(o=d[a],!(Math.ceil(s/(u*o))<=n));++a);return o}(e,i,l,n)),h&&(g=+r.startOf(g,"isoWeek",h),m=+r.startOf(m,"isoWeek",h)),g=+r.startOf(g,h?"day":l),(m=+r.startOf(m,h?"day":l))<i&&(m=+r.add(m,1,l)),a=g,c&&u&&!h&&!s.round&&(a=+r.startOf(a,u),a=+r.add(a,~~((g-a)/(f.size*d))*d,l));a<m;a=+r.add(a,d,l))p.push(+a);return p.push(+a),p}var Ji=fi.extend({initialize:function(){this.mergeTicksOptions(),fi.prototype.initialize.call(this)},update:function(){var t=this.options,e=t.time||(t.time={}),i=this._adapter=new si._date(t.adapters.date);return e.format&&console.warn("options.time.format is deprecated and replaced by options.time.parser."),ut.mergeIf(e.displayFormats,i.formats()),fi.prototype.update.apply(this,arguments)},getRightValue:function(t){return t&&void 0!==t.t&&(t=t.t),fi.prototype.getRightValue.call(this,t)},determineDataLimits:function(){var t,e,i,n,a,r,o=this,s=o.chart,l=o._adapter,u=o.options.time,d=u.unit||"day",h=Ei,c=Hi,f=[],g=[],m=[],p=s.data.labels||[];for(t=0,i=p.length;t<i;++t)m.push($i(o,p[t]));for(t=0,i=(s.data.datasets||[]).length;t<i;++t)if(s.isDatasetVisible(t))if(a=s.data.datasets[t].data,ut.isObject(a[0]))for(g[t]=[],e=0,n=a.length;e<n;++e)r=$i(o,a[e]),f.push(r),g[t][e]=r;else{for(e=0,n=m.length;e<n;++e)f.push(m[e]);g[t]=m.slice(0)}else 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t=this;t.isHorizontal()?(t.width=t.maxWidth,t.left=0,t.right=t.width):(t.height=t.maxHeight,t.top=0,t.bottom=t.height),t.paddingLeft=0,t.paddingTop=0,t.paddingRight=0,t.paddingBottom=0,t.minSize={width:0,height:0}},afterSetDimensions:bn,beforeBuildLabels:bn,buildLabels:bn,afterBuildLabels:bn,beforeFit:bn,fit:function(){var t=this,e=t.options,i=e.display,n=t.minSize,a=ut.isArray(e.text)?e.text.length:1,r=ut.options._parseFont(e),o=i?a*r.lineHeight+2*e.padding:0;t.isHorizontal()?(n.width=t.maxWidth,n.height=o):(n.width=o,n.height=t.maxHeight),t.width=n.width,t.height=n.height},afterFit:bn,isHorizontal:function(){var t=this.options.position;return"top"===t||"bottom"===t},draw:function(){var t=this,e=t.ctx,i=t.options;if(i.display){var 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i(t,"max-width","clientWidth")},ut.getConstraintHeight=function(t){return i(t,"max-height","clientHeight")},ut._calculatePadding=function(t,e,i){return(e=ut.getStyle(t,e)).indexOf("%")>-1?i*parseInt(e,10)/100:parseInt(e,10)},ut._getParentNode=function(t){var e=t.parentNode;return e&&"[object ShadowRoot]"===e.toString()&&(e=e.host),e},ut.getMaximumWidth=function(t){var e=ut._getParentNode(t);if(!e)return t.clientWidth;var i=e.clientWidth,n=i-ut._calculatePadding(e,"padding-left",i)-ut._calculatePadding(e,"padding-right",i),a=ut.getConstraintWidth(t);return isNaN(a)?n:Math.min(n,a)},ut.getMaximumHeight=function(t){var e=ut._getParentNode(t);if(!e)return t.clientHeight;var i=e.clientHeight,n=i-ut._calculatePadding(e,"padding-top",i)-ut._calculatePadding(e,"padding-bottom",i),a=ut.getConstraintHeight(t);return isNaN(a)?n:Math.min(n,a)},ut.getStyle=function(t,e){return t.currentStyle?t.currentStyle[e]:document.defaultView.getComputedStyle(t,null).getPropertyValue(e)},ut.retinaScale=function(t,e){var i=t.currentDevicePixelRatio=e||"undefined"!=typeof window&&window.devicePixelRatio||1;if(1!==i){var n=t.canvas,a=t.height,r=t.width;n.height=a*i,n.width=r*i,t.ctx.scale(i,i),n.style.height||n.style.width||(n.style.height=a+"px",n.style.width=r+"px")}},ut.fontString=function(t,e,i){return e+" "+t+"px "+i},ut.longestText=function(t,e,i,n){var a=(n=n||{}).data=n.data||{},r=n.garbageCollect=n.garbageCollect||[];n.font!==e&&(a=n.data={},r=n.garbageCollect=[],n.font=e),t.font=e;var o=0;ut.each(i,function(e){null!=e&&!0!==ut.isArray(e)?o=ut.measureText(t,a,r,o,e):ut.isArray(e)&&ut.each(e,function(e){null==e||ut.isArray(e)||(o=ut.measureText(t,a,r,o,e))})});var s=r.length/2;if(s>i.length){for(var l=0;l<s;l++)delete a[r[l]];r.splice(0,s)}return o},ut.measureText=function(t,e,i,n,a){var r=e[a];return r||(r=e[a]=t.measureText(a).width,i.push(a)),r>n&&(n=r),n},ut.numberOfLabelLines=function(t){var e=1;return ut.each(t,function(t){ut.isArray(t)&&t.length>e&&(e=t.length)}),e},ut.color=G?function(t){return t instanceof CanvasGradient&&(t=ot.global.defaultColor),G(t)}:function(t){return console.error("Color.js not found!"),t},ut.getHoverColor=function(t){return t instanceof CanvasPattern||t instanceof CanvasGradient?t:ut.color(t).saturate(.5).darken(.1).rgbString()}}(),ai._adapters=si,ai.Animation=pt,ai.animationService=vt,ai.controllers=ue,ai.DatasetController=kt,ai.defaults=ot,ai.Element=gt,ai.elements=Nt,ai.Interaction=pe,ai.layouts=xe,ai.platform=Ve,ai.plugins=He,ai.Scale=fi,ai.scaleService=Ee,ai.Ticks=li,ai.Tooltip=Je,ai.helpers.each(en,function(t,e){ai.scaleService.registerScaleType(e,t,t._defaults)}),kn)kn.hasOwnProperty(Dn)&&ai.plugins.register(kn[Dn]);ai.platform.initialize();var Cn=ai;return"undefined"!=typeof window&&(window.Chart=ai),ai.Chart=ai,ai.Legend=kn.legend._element,ai.Title=kn.title._element,ai.pluginService=ai.plugins,ai.PluginBase=ai.Element.extend({}),ai.canvasHelpers=ai.helpers.canvas,ai.layoutService=ai.layouts,ai.LinearScaleBase=yi,ai.helpers.each(["Bar","Bubble","Doughnut","Line","PolarArea","Radar","Scatter"],function(t){ai[t]=function(e,i){return new ai(e,ai.helpers.merge(i||{},{type:t.charAt(0).toLowerCase()+t.slice(1)}))}}),Cn});
--- /dev/null
+/*
+ * DOM element rendering detection
+ * https://davidwalsh.name/detect-node-insertion
+ */
+@keyframes chartjs-render-animation {
+ from { opacity: 0.99; }
+ to { opacity: 1; }
+}
+
+.chartjs-render-monitor {
+ animation: chartjs-render-animation 0.001s;
+}
+
+/*
+ * DOM element resizing detection
+ * https://github.com/marcj/css-element-queries
+ */
+.chartjs-size-monitor,
+.chartjs-size-monitor-expand,
+.chartjs-size-monitor-shrink {
+ position: absolute;
+ direction: ltr;
+ left: 0;
+ top: 0;
+ right: 0;
+ bottom: 0;
+ overflow: hidden;
+ pointer-events: none;
+ visibility: hidden;
+ z-index: -1;
+}
+
+.chartjs-size-monitor-expand > div {
+ position: absolute;
+ width: 1000000px;
+ height: 1000000px;
+ left: 0;
+ top: 0;
+}
+
+.chartjs-size-monitor-shrink > div {
+ position: absolute;
+ width: 200%;
+ height: 200%;
+ left: 0;
+ top: 0;
+}
--- /dev/null
+/*!
+ * Chart.js v2.8.0
+ * https://www.chartjs.org
+ * (c) 2019 Chart.js Contributors
+ * Released under the MIT License
+ */
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(function() { try { return require('moment'); } catch(e) { } }()) :
+typeof define === 'function' && define.amd ? define(['require'], function(require) { return factory(function() { try { return require('moment'); } catch(e) { } }()); }) :
+(global.Chart = factory(global.moment));
+}(this, (function (moment) { 'use strict';
+
+moment = moment && moment.hasOwnProperty('default') ? moment['default'] : moment;
+
+/* MIT license */
+
+var conversions = {
+ rgb2hsl: rgb2hsl,
+ rgb2hsv: rgb2hsv,
+ rgb2hwb: rgb2hwb,
+ rgb2cmyk: rgb2cmyk,
+ rgb2keyword: rgb2keyword,
+ rgb2xyz: rgb2xyz,
+ rgb2lab: rgb2lab,
+ rgb2lch: rgb2lch,
+
+ hsl2rgb: hsl2rgb,
+ hsl2hsv: hsl2hsv,
+ hsl2hwb: hsl2hwb,
+ hsl2cmyk: hsl2cmyk,
+ hsl2keyword: hsl2keyword,
+
+ hsv2rgb: hsv2rgb,
+ hsv2hsl: hsv2hsl,
+ hsv2hwb: hsv2hwb,
+ hsv2cmyk: hsv2cmyk,
+ hsv2keyword: hsv2keyword,
+
+ hwb2rgb: hwb2rgb,
+ hwb2hsl: hwb2hsl,
+ hwb2hsv: hwb2hsv,
+ hwb2cmyk: hwb2cmyk,
+ hwb2keyword: hwb2keyword,
+
+ cmyk2rgb: cmyk2rgb,
+ cmyk2hsl: cmyk2hsl,
+ cmyk2hsv: cmyk2hsv,
+ cmyk2hwb: cmyk2hwb,
+ cmyk2keyword: cmyk2keyword,
+
+ keyword2rgb: keyword2rgb,
+ keyword2hsl: keyword2hsl,
+ keyword2hsv: keyword2hsv,
+ keyword2hwb: keyword2hwb,
+ keyword2cmyk: keyword2cmyk,
+ keyword2lab: keyword2lab,
+ keyword2xyz: keyword2xyz,
+
+ xyz2rgb: xyz2rgb,
+ xyz2lab: xyz2lab,
+ xyz2lch: xyz2lch,
+
+ lab2xyz: lab2xyz,
+ lab2rgb: lab2rgb,
+ lab2lch: lab2lch,
+
+ lch2lab: lch2lab,
+ lch2xyz: lch2xyz,
+ lch2rgb: lch2rgb
+};
+
+
+function rgb2hsl(rgb) {
+ var r = rgb[0]/255,
+ g = rgb[1]/255,
+ b = rgb[2]/255,
+ min = Math.min(r, g, b),
+ max = Math.max(r, g, b),
+ delta = max - min,
+ h, s, l;
+
+ if (max == min)
+ h = 0;
+ else if (r == max)
+ h = (g - b) / delta;
+ else if (g == max)
+ h = 2 + (b - r) / delta;
+ else if (b == max)
+ h = 4 + (r - g)/ delta;
+
+ h = Math.min(h * 60, 360);
+
+ if (h < 0)
+ h += 360;
+
+ l = (min + max) / 2;
+
+ if (max == min)
+ s = 0;
+ else if (l <= 0.5)
+ s = delta / (max + min);
+ else
+ s = delta / (2 - max - min);
+
+ return [h, s * 100, l * 100];
+}
+
+function rgb2hsv(rgb) {
+ var r = rgb[0],
+ g = rgb[1],
+ b = rgb[2],
+ min = Math.min(r, g, b),
+ max = Math.max(r, g, b),
+ delta = max - min,
+ h, s, v;
+
+ if (max == 0)
+ s = 0;
+ else
+ s = (delta/max * 1000)/10;
+
+ if (max == min)
+ h = 0;
+ else if (r == max)
+ h = (g - b) / delta;
+ else if (g == max)
+ h = 2 + (b - r) / delta;
+ else if (b == max)
+ h = 4 + (r - g) / delta;
+
+ h = Math.min(h * 60, 360);
+
+ if (h < 0)
+ h += 360;
+
+ v = ((max / 255) * 1000) / 10;
+
+ return [h, s, v];
+}
+
+function rgb2hwb(rgb) {
+ var r = rgb[0],
+ g = rgb[1],
+ b = rgb[2],
+ h = rgb2hsl(rgb)[0],
+ w = 1/255 * Math.min(r, Math.min(g, b)),
+ b = 1 - 1/255 * Math.max(r, Math.max(g, b));
+
+ return [h, w * 100, b * 100];
+}
+
+function rgb2cmyk(rgb) {
+ var r = rgb[0] / 255,
+ g = rgb[1] / 255,
+ b = rgb[2] / 255,
+ c, m, y, k;
+
+ k = Math.min(1 - r, 1 - g, 1 - b);
+ c = (1 - r - k) / (1 - k) || 0;
+ m = (1 - g - k) / (1 - k) || 0;
+ y = (1 - b - k) / (1 - k) || 0;
+ return [c * 100, m * 100, y * 100, k * 100];
+}
+
+function rgb2keyword(rgb) {
+ return reverseKeywords[JSON.stringify(rgb)];
+}
+
+function rgb2xyz(rgb) {
+ var r = rgb[0] / 255,
+ g = rgb[1] / 255,
+ b = rgb[2] / 255;
+
+ // assume sRGB
+ r = r > 0.04045 ? Math.pow(((r + 0.055) / 1.055), 2.4) : (r / 12.92);
+ g = g > 0.04045 ? Math.pow(((g + 0.055) / 1.055), 2.4) : (g / 12.92);
+ b = b > 0.04045 ? Math.pow(((b + 0.055) / 1.055), 2.4) : (b / 12.92);
+
+ var x = (r * 0.4124) + (g * 0.3576) + (b * 0.1805);
+ var y = (r * 0.2126) + (g * 0.7152) + (b * 0.0722);
+ var z = (r * 0.0193) + (g * 0.1192) + (b * 0.9505);
+
+ return [x * 100, y *100, z * 100];
+}
+
+function rgb2lab(rgb) {
+ var xyz = rgb2xyz(rgb),
+ x = xyz[0],
+ y = xyz[1],
+ z = xyz[2],
+ l, a, b;
+
+ x /= 95.047;
+ y /= 100;
+ z /= 108.883;
+
+ x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
+ y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
+ z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
+
+ l = (116 * y) - 16;
+ a = 500 * (x - y);
+ b = 200 * (y - z);
+
+ return [l, a, b];
+}
+
+function rgb2lch(args) {
+ return lab2lch(rgb2lab(args));
+}
+
+function hsl2rgb(hsl) {
+ var h = hsl[0] / 360,
+ s = hsl[1] / 100,
+ l = hsl[2] / 100,
+ t1, t2, t3, rgb, val;
+
+ if (s == 0) {
+ val = l * 255;
+ return [val, val, val];
+ }
+
+ if (l < 0.5)
+ t2 = l * (1 + s);
+ else
+ t2 = l + s - l * s;
+ t1 = 2 * l - t2;
+
+ rgb = [0, 0, 0];
+ for (var i = 0; i < 3; i++) {
+ t3 = h + 1 / 3 * - (i - 1);
+ t3 < 0 && t3++;
+ t3 > 1 && t3--;
+
+ if (6 * t3 < 1)
+ val = t1 + (t2 - t1) * 6 * t3;
+ else if (2 * t3 < 1)
+ val = t2;
+ else if (3 * t3 < 2)
+ val = t1 + (t2 - t1) * (2 / 3 - t3) * 6;
+ else
+ val = t1;
+
+ rgb[i] = val * 255;
+ }
+
+ return rgb;
+}
+
+function hsl2hsv(hsl) {
+ var h = hsl[0],
+ s = hsl[1] / 100,
+ l = hsl[2] / 100,
+ sv, v;
+
+ if(l === 0) {
+ // no need to do calc on black
+ // also avoids divide by 0 error
+ return [0, 0, 0];
+ }
+
+ l *= 2;
+ s *= (l <= 1) ? l : 2 - l;
+ v = (l + s) / 2;
+ sv = (2 * s) / (l + s);
+ return [h, sv * 100, v * 100];
+}
+
+function hsl2hwb(args) {
+ return rgb2hwb(hsl2rgb(args));
+}
+
+function hsl2cmyk(args) {
+ return rgb2cmyk(hsl2rgb(args));
+}
+
+function hsl2keyword(args) {
+ return rgb2keyword(hsl2rgb(args));
+}
+
+
+function hsv2rgb(hsv) {
+ var h = hsv[0] / 60,
+ s = hsv[1] / 100,
+ v = hsv[2] / 100,
+ hi = Math.floor(h) % 6;
+
+ var f = h - Math.floor(h),
+ p = 255 * v * (1 - s),
+ q = 255 * v * (1 - (s * f)),
+ t = 255 * v * (1 - (s * (1 - f))),
+ v = 255 * v;
+
+ switch(hi) {
+ case 0:
+ return [v, t, p];
+ case 1:
+ return [q, v, p];
+ case 2:
+ return [p, v, t];
+ case 3:
+ return [p, q, v];
+ case 4:
+ return [t, p, v];
+ case 5:
+ return [v, p, q];
+ }
+}
+
+function hsv2hsl(hsv) {
+ var h = hsv[0],
+ s = hsv[1] / 100,
+ v = hsv[2] / 100,
+ sl, l;
+
+ l = (2 - s) * v;
+ sl = s * v;
+ sl /= (l <= 1) ? l : 2 - l;
+ sl = sl || 0;
+ l /= 2;
+ return [h, sl * 100, l * 100];
+}
+
+function hsv2hwb(args) {
+ return rgb2hwb(hsv2rgb(args))
+}
+
+function hsv2cmyk(args) {
+ return rgb2cmyk(hsv2rgb(args));
+}
+
+function hsv2keyword(args) {
+ return rgb2keyword(hsv2rgb(args));
+}
+
+// http://dev.w3.org/csswg/css-color/#hwb-to-rgb
+function hwb2rgb(hwb) {
+ var h = hwb[0] / 360,
+ wh = hwb[1] / 100,
+ bl = hwb[2] / 100,
+ ratio = wh + bl,
+ i, v, f, n;
+
+ // wh + bl cant be > 1
+ if (ratio > 1) {
+ wh /= ratio;
+ bl /= ratio;
+ }
+
+ i = Math.floor(6 * h);
+ v = 1 - bl;
+ f = 6 * h - i;
+ if ((i & 0x01) != 0) {
+ f = 1 - f;
+ }
+ n = wh + f * (v - wh); // linear interpolation
+
+ switch (i) {
+ default:
+ case 6:
+ case 0: r = v; g = n; b = wh; break;
+ case 1: r = n; g = v; b = wh; break;
+ case 2: r = wh; g = v; b = n; break;
+ case 3: r = wh; g = n; b = v; break;
+ case 4: r = n; g = wh; b = v; break;
+ case 5: r = v; g = wh; b = n; break;
+ }
+
+ return [r * 255, g * 255, b * 255];
+}
+
+function hwb2hsl(args) {
+ return rgb2hsl(hwb2rgb(args));
+}
+
+function hwb2hsv(args) {
+ return rgb2hsv(hwb2rgb(args));
+}
+
+function hwb2cmyk(args) {
+ return rgb2cmyk(hwb2rgb(args));
+}
+
+function hwb2keyword(args) {
+ return rgb2keyword(hwb2rgb(args));
+}
+
+function cmyk2rgb(cmyk) {
+ var c = cmyk[0] / 100,
+ m = cmyk[1] / 100,
+ y = cmyk[2] / 100,
+ k = cmyk[3] / 100,
+ r, g, b;
+
+ r = 1 - Math.min(1, c * (1 - k) + k);
+ g = 1 - Math.min(1, m * (1 - k) + k);
+ b = 1 - Math.min(1, y * (1 - k) + k);
+ return [r * 255, g * 255, b * 255];
+}
+
+function cmyk2hsl(args) {
+ return rgb2hsl(cmyk2rgb(args));
+}
+
+function cmyk2hsv(args) {
+ return rgb2hsv(cmyk2rgb(args));
+}
+
+function cmyk2hwb(args) {
+ return rgb2hwb(cmyk2rgb(args));
+}
+
+function cmyk2keyword(args) {
+ return rgb2keyword(cmyk2rgb(args));
+}
+
+
+function xyz2rgb(xyz) {
+ var x = xyz[0] / 100,
+ y = xyz[1] / 100,
+ z = xyz[2] / 100,
+ r, g, b;
+
+ r = (x * 3.2406) + (y * -1.5372) + (z * -0.4986);
+ g = (x * -0.9689) + (y * 1.8758) + (z * 0.0415);
+ b = (x * 0.0557) + (y * -0.2040) + (z * 1.0570);
+
+ // assume sRGB
+ r = r > 0.0031308 ? ((1.055 * Math.pow(r, 1.0 / 2.4)) - 0.055)
+ : r = (r * 12.92);
+
+ g = g > 0.0031308 ? ((1.055 * Math.pow(g, 1.0 / 2.4)) - 0.055)
+ : g = (g * 12.92);
+
+ b = b > 0.0031308 ? ((1.055 * Math.pow(b, 1.0 / 2.4)) - 0.055)
+ : b = (b * 12.92);
+
+ r = Math.min(Math.max(0, r), 1);
+ g = Math.min(Math.max(0, g), 1);
+ b = Math.min(Math.max(0, b), 1);
+
+ return [r * 255, g * 255, b * 255];
+}
+
+function xyz2lab(xyz) {
+ var x = xyz[0],
+ y = xyz[1],
+ z = xyz[2],
+ l, a, b;
+
+ x /= 95.047;
+ y /= 100;
+ z /= 108.883;
+
+ x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
+ y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
+ z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
+
+ l = (116 * y) - 16;
+ a = 500 * (x - y);
+ b = 200 * (y - z);
+
+ return [l, a, b];
+}
+
+function xyz2lch(args) {
+ return lab2lch(xyz2lab(args));
+}
+
+function lab2xyz(lab) {
+ var l = lab[0],
+ a = lab[1],
+ b = lab[2],
+ x, y, z, y2;
+
+ if (l <= 8) {
+ y = (l * 100) / 903.3;
+ y2 = (7.787 * (y / 100)) + (16 / 116);
+ } else {
+ y = 100 * Math.pow((l + 16) / 116, 3);
+ y2 = Math.pow(y / 100, 1/3);
+ }
+
+ x = x / 95.047 <= 0.008856 ? x = (95.047 * ((a / 500) + y2 - (16 / 116))) / 7.787 : 95.047 * Math.pow((a / 500) + y2, 3);
+
+ z = z / 108.883 <= 0.008859 ? z = (108.883 * (y2 - (b / 200) - (16 / 116))) / 7.787 : 108.883 * Math.pow(y2 - (b / 200), 3);
+
+ return [x, y, z];
+}
+
+function lab2lch(lab) {
+ var l = lab[0],
+ a = lab[1],
+ b = lab[2],
+ hr, h, c;
+
+ hr = Math.atan2(b, a);
+ h = hr * 360 / 2 / Math.PI;
+ if (h < 0) {
+ h += 360;
+ }
+ c = Math.sqrt(a * a + b * b);
+ return [l, c, h];
+}
+
+function lab2rgb(args) {
+ return xyz2rgb(lab2xyz(args));
+}
+
+function lch2lab(lch) {
+ var l = lch[0],
+ c = lch[1],
+ h = lch[2],
+ a, b, hr;
+
+ hr = h / 360 * 2 * Math.PI;
+ a = c * Math.cos(hr);
+ b = c * Math.sin(hr);
+ return [l, a, b];
+}
+
+function lch2xyz(args) {
+ return lab2xyz(lch2lab(args));
+}
+
+function lch2rgb(args) {
+ return lab2rgb(lch2lab(args));
+}
+
+function keyword2rgb(keyword) {
+ return cssKeywords[keyword];
+}
+
+function keyword2hsl(args) {
+ return rgb2hsl(keyword2rgb(args));
+}
+
+function keyword2hsv(args) {
+ return rgb2hsv(keyword2rgb(args));
+}
+
+function keyword2hwb(args) {
+ return rgb2hwb(keyword2rgb(args));
+}
+
+function keyword2cmyk(args) {
+ return rgb2cmyk(keyword2rgb(args));
+}
+
+function keyword2lab(args) {
+ return rgb2lab(keyword2rgb(args));
+}
+
+function keyword2xyz(args) {
+ return rgb2xyz(keyword2rgb(args));
+}
+
+var cssKeywords = {
+ aliceblue: [240,248,255],
+ antiquewhite: [250,235,215],
+ aqua: [0,255,255],
+ aquamarine: [127,255,212],
+ azure: [240,255,255],
+ beige: [245,245,220],
+ bisque: [255,228,196],
+ black: [0,0,0],
+ blanchedalmond: [255,235,205],
+ blue: [0,0,255],
+ blueviolet: [138,43,226],
+ brown: [165,42,42],
+ burlywood: [222,184,135],
+ cadetblue: [95,158,160],
+ chartreuse: [127,255,0],
+ chocolate: [210,105,30],
+ coral: [255,127,80],
+ cornflowerblue: [100,149,237],
+ cornsilk: [255,248,220],
+ crimson: [220,20,60],
+ cyan: [0,255,255],
+ darkblue: [0,0,139],
+ darkcyan: [0,139,139],
+ darkgoldenrod: [184,134,11],
+ darkgray: [169,169,169],
+ darkgreen: [0,100,0],
+ darkgrey: [169,169,169],
+ darkkhaki: [189,183,107],
+ darkmagenta: [139,0,139],
+ darkolivegreen: [85,107,47],
+ darkorange: [255,140,0],
+ darkorchid: [153,50,204],
+ darkred: [139,0,0],
+ darksalmon: [233,150,122],
+ darkseagreen: [143,188,143],
+ darkslateblue: [72,61,139],
+ darkslategray: [47,79,79],
+ darkslategrey: [47,79,79],
+ darkturquoise: [0,206,209],
+ darkviolet: [148,0,211],
+ deeppink: [255,20,147],
+ deepskyblue: [0,191,255],
+ dimgray: [105,105,105],
+ dimgrey: [105,105,105],
+ dodgerblue: [30,144,255],
+ firebrick: [178,34,34],
+ floralwhite: [255,250,240],
+ forestgreen: [34,139,34],
+ fuchsia: [255,0,255],
+ gainsboro: [220,220,220],
+ ghostwhite: [248,248,255],
+ gold: [255,215,0],
+ goldenrod: [218,165,32],
+ gray: [128,128,128],
+ green: [0,128,0],
+ greenyellow: [173,255,47],
+ grey: [128,128,128],
+ honeydew: [240,255,240],
+ hotpink: [255,105,180],
+ indianred: [205,92,92],
+ indigo: [75,0,130],
+ ivory: [255,255,240],
+ khaki: [240,230,140],
+ lavender: [230,230,250],
+ lavenderblush: [255,240,245],
+ lawngreen: [124,252,0],
+ lemonchiffon: [255,250,205],
+ lightblue: [173,216,230],
+ lightcoral: [240,128,128],
+ lightcyan: [224,255,255],
+ lightgoldenrodyellow: [250,250,210],
+ lightgray: [211,211,211],
+ lightgreen: [144,238,144],
+ lightgrey: [211,211,211],
+ lightpink: [255,182,193],
+ lightsalmon: [255,160,122],
+ lightseagreen: [32,178,170],
+ lightskyblue: [135,206,250],
+ lightslategray: [119,136,153],
+ lightslategrey: [119,136,153],
+ lightsteelblue: [176,196,222],
+ lightyellow: [255,255,224],
+ lime: [0,255,0],
+ limegreen: [50,205,50],
+ linen: [250,240,230],
+ magenta: [255,0,255],
+ maroon: [128,0,0],
+ mediumaquamarine: [102,205,170],
+ mediumblue: [0,0,205],
+ mediumorchid: [186,85,211],
+ mediumpurple: [147,112,219],
+ mediumseagreen: [60,179,113],
+ mediumslateblue: [123,104,238],
+ mediumspringgreen: [0,250,154],
+ mediumturquoise: [72,209,204],
+ mediumvioletred: [199,21,133],
+ midnightblue: [25,25,112],
+ mintcream: [245,255,250],
+ mistyrose: [255,228,225],
+ moccasin: [255,228,181],
+ navajowhite: [255,222,173],
+ navy: [0,0,128],
+ oldlace: [253,245,230],
+ olive: [128,128,0],
+ olivedrab: [107,142,35],
+ orange: [255,165,0],
+ orangered: [255,69,0],
+ orchid: [218,112,214],
+ palegoldenrod: [238,232,170],
+ palegreen: [152,251,152],
+ paleturquoise: [175,238,238],
+ palevioletred: [219,112,147],
+ papayawhip: [255,239,213],
+ peachpuff: [255,218,185],
+ peru: [205,133,63],
+ pink: [255,192,203],
+ plum: [221,160,221],
+ powderblue: [176,224,230],
+ purple: [128,0,128],
+ rebeccapurple: [102, 51, 153],
+ red: [255,0,0],
+ rosybrown: [188,143,143],
+ royalblue: [65,105,225],
+ saddlebrown: [139,69,19],
+ salmon: [250,128,114],
+ sandybrown: [244,164,96],
+ seagreen: [46,139,87],
+ seashell: [255,245,238],
+ sienna: [160,82,45],
+ silver: [192,192,192],
+ skyblue: [135,206,235],
+ slateblue: [106,90,205],
+ slategray: [112,128,144],
+ slategrey: [112,128,144],
+ snow: [255,250,250],
+ springgreen: [0,255,127],
+ steelblue: [70,130,180],
+ tan: [210,180,140],
+ teal: [0,128,128],
+ thistle: [216,191,216],
+ tomato: [255,99,71],
+ turquoise: [64,224,208],
+ violet: [238,130,238],
+ wheat: [245,222,179],
+ white: [255,255,255],
+ whitesmoke: [245,245,245],
+ yellow: [255,255,0],
+ yellowgreen: [154,205,50]
+};
+
+var reverseKeywords = {};
+for (var key in cssKeywords) {
+ reverseKeywords[JSON.stringify(cssKeywords[key])] = key;
+}
+
+var convert = function() {
+ return new Converter();
+};
+
+for (var func in conversions) {
+ // export Raw versions
+ convert[func + "Raw"] = (function(func) {
+ // accept array or plain args
+ return function(arg) {
+ if (typeof arg == "number")
+ arg = Array.prototype.slice.call(arguments);
+ return conversions[func](arg);
+ }
+ })(func);
+
+ var pair = /(\w+)2(\w+)/.exec(func),
+ from = pair[1],
+ to = pair[2];
+
+ // export rgb2hsl and ["rgb"]["hsl"]
+ convert[from] = convert[from] || {};
+
+ convert[from][to] = convert[func] = (function(func) {
+ return function(arg) {
+ if (typeof arg == "number")
+ arg = Array.prototype.slice.call(arguments);
+
+ var val = conversions[func](arg);
+ if (typeof val == "string" || val === undefined)
+ return val; // keyword
+
+ for (var i = 0; i < val.length; i++)
+ val[i] = Math.round(val[i]);
+ return val;
+ }
+ })(func);
+}
+
+
+/* Converter does lazy conversion and caching */
+var Converter = function() {
+ this.convs = {};
+};
+
+/* Either get the values for a space or
+ set the values for a space, depending on args */
+Converter.prototype.routeSpace = function(space, args) {
+ var values = args[0];
+ if (values === undefined) {
+ // color.rgb()
+ return this.getValues(space);
+ }
+ // color.rgb(10, 10, 10)
+ if (typeof values == "number") {
+ values = Array.prototype.slice.call(args);
+ }
+
+ return this.setValues(space, values);
+};
+
+/* Set the values for a space, invalidating cache */
+Converter.prototype.setValues = function(space, values) {
+ this.space = space;
+ this.convs = {};
+ this.convs[space] = values;
+ return this;
+};
+
+/* Get the values for a space. If there's already
+ a conversion for the space, fetch it, otherwise
+ compute it */
+Converter.prototype.getValues = function(space) {
+ var vals = this.convs[space];
+ if (!vals) {
+ var fspace = this.space,
+ from = this.convs[fspace];
+ vals = convert[fspace][space](from);
+
+ this.convs[space] = vals;
+ }
+ return vals;
+};
+
+["rgb", "hsl", "hsv", "cmyk", "keyword"].forEach(function(space) {
+ Converter.prototype[space] = function(vals) {
+ return this.routeSpace(space, arguments);
+ };
+});
+
+var colorConvert = convert;
+
+var colorName = {\r
+ "aliceblue": [240, 248, 255],\r
+ "antiquewhite": [250, 235, 215],\r
+ "aqua": [0, 255, 255],\r
+ "aquamarine": [127, 255, 212],\r
+ "azure": [240, 255, 255],\r
+ "beige": [245, 245, 220],\r
+ "bisque": [255, 228, 196],\r
+ "black": [0, 0, 0],\r
+ "blanchedalmond": [255, 235, 205],\r
+ "blue": [0, 0, 255],\r
+ "blueviolet": [138, 43, 226],\r
+ "brown": [165, 42, 42],\r
+ "burlywood": [222, 184, 135],\r
+ "cadetblue": [95, 158, 160],\r
+ "chartreuse": [127, 255, 0],\r
+ "chocolate": [210, 105, 30],\r
+ "coral": [255, 127, 80],\r
+ "cornflowerblue": [100, 149, 237],\r
+ "cornsilk": [255, 248, 220],\r
+ "crimson": [220, 20, 60],\r
+ "cyan": [0, 255, 255],\r
+ "darkblue": [0, 0, 139],\r
+ "darkcyan": [0, 139, 139],\r
+ "darkgoldenrod": [184, 134, 11],\r
+ "darkgray": [169, 169, 169],\r
+ "darkgreen": [0, 100, 0],\r
+ "darkgrey": [169, 169, 169],\r
+ "darkkhaki": [189, 183, 107],\r
+ "darkmagenta": [139, 0, 139],\r
+ "darkolivegreen": [85, 107, 47],\r
+ "darkorange": [255, 140, 0],\r
+ "darkorchid": [153, 50, 204],\r
+ "darkred": [139, 0, 0],\r
+ "darksalmon": [233, 150, 122],\r
+ "darkseagreen": [143, 188, 143],\r
+ "darkslateblue": [72, 61, 139],\r
+ "darkslategray": [47, 79, 79],\r
+ "darkslategrey": [47, 79, 79],\r
+ "darkturquoise": [0, 206, 209],\r
+ "darkviolet": [148, 0, 211],\r
+ "deeppink": [255, 20, 147],\r
+ "deepskyblue": [0, 191, 255],\r
+ "dimgray": [105, 105, 105],\r
+ "dimgrey": [105, 105, 105],\r
+ "dodgerblue": [30, 144, 255],\r
+ "firebrick": [178, 34, 34],\r
+ "floralwhite": [255, 250, 240],\r
+ "forestgreen": [34, 139, 34],\r
+ "fuchsia": [255, 0, 255],\r
+ "gainsboro": [220, 220, 220],\r
+ "ghostwhite": [248, 248, 255],\r
+ "gold": [255, 215, 0],\r
+ "goldenrod": [218, 165, 32],\r
+ "gray": [128, 128, 128],\r
+ "green": [0, 128, 0],\r
+ "greenyellow": [173, 255, 47],\r
+ "grey": [128, 128, 128],\r
+ "honeydew": [240, 255, 240],\r
+ "hotpink": [255, 105, 180],\r
+ "indianred": [205, 92, 92],\r
+ "indigo": [75, 0, 130],\r
+ "ivory": [255, 255, 240],\r
+ "khaki": [240, 230, 140],\r
+ "lavender": [230, 230, 250],\r
+ "lavenderblush": [255, 240, 245],\r
+ "lawngreen": [124, 252, 0],\r
+ "lemonchiffon": [255, 250, 205],\r
+ "lightblue": [173, 216, 230],\r
+ "lightcoral": [240, 128, 128],\r
+ "lightcyan": [224, 255, 255],\r
+ "lightgoldenrodyellow": [250, 250, 210],\r
+ "lightgray": [211, 211, 211],\r
+ "lightgreen": [144, 238, 144],\r
+ "lightgrey": [211, 211, 211],\r
+ "lightpink": [255, 182, 193],\r
+ "lightsalmon": [255, 160, 122],\r
+ "lightseagreen": [32, 178, 170],\r
+ "lightskyblue": [135, 206, 250],\r
+ "lightslategray": [119, 136, 153],\r
+ "lightslategrey": [119, 136, 153],\r
+ "lightsteelblue": [176, 196, 222],\r
+ "lightyellow": [255, 255, 224],\r
+ "lime": [0, 255, 0],\r
+ "limegreen": [50, 205, 50],\r
+ "linen": [250, 240, 230],\r
+ "magenta": [255, 0, 255],\r
+ "maroon": [128, 0, 0],\r
+ "mediumaquamarine": [102, 205, 170],\r
+ "mediumblue": [0, 0, 205],\r
+ "mediumorchid": [186, 85, 211],\r
+ "mediumpurple": [147, 112, 219],\r
+ "mediumseagreen": [60, 179, 113],\r
+ "mediumslateblue": [123, 104, 238],\r
+ "mediumspringgreen": [0, 250, 154],\r
+ "mediumturquoise": [72, 209, 204],\r
+ "mediumvioletred": [199, 21, 133],\r
+ "midnightblue": [25, 25, 112],\r
+ "mintcream": [245, 255, 250],\r
+ "mistyrose": [255, 228, 225],\r
+ "moccasin": [255, 228, 181],\r
+ "navajowhite": [255, 222, 173],\r
+ "navy": [0, 0, 128],\r
+ "oldlace": [253, 245, 230],\r
+ "olive": [128, 128, 0],\r
+ "olivedrab": [107, 142, 35],\r
+ "orange": [255, 165, 0],\r
+ "orangered": [255, 69, 0],\r
+ "orchid": [218, 112, 214],\r
+ "palegoldenrod": [238, 232, 170],\r
+ "palegreen": [152, 251, 152],\r
+ "paleturquoise": [175, 238, 238],\r
+ "palevioletred": [219, 112, 147],\r
+ "papayawhip": [255, 239, 213],\r
+ "peachpuff": [255, 218, 185],\r
+ "peru": [205, 133, 63],\r
+ "pink": [255, 192, 203],\r
+ "plum": [221, 160, 221],\r
+ "powderblue": [176, 224, 230],\r
+ "purple": [128, 0, 128],\r
+ "rebeccapurple": [102, 51, 153],\r
+ "red": [255, 0, 0],\r
+ "rosybrown": [188, 143, 143],\r
+ "royalblue": [65, 105, 225],\r
+ "saddlebrown": [139, 69, 19],\r
+ "salmon": [250, 128, 114],\r
+ "sandybrown": [244, 164, 96],\r
+ "seagreen": [46, 139, 87],\r
+ "seashell": [255, 245, 238],\r
+ "sienna": [160, 82, 45],\r
+ "silver": [192, 192, 192],\r
+ "skyblue": [135, 206, 235],\r
+ "slateblue": [106, 90, 205],\r
+ "slategray": [112, 128, 144],\r
+ "slategrey": [112, 128, 144],\r
+ "snow": [255, 250, 250],\r
+ "springgreen": [0, 255, 127],\r
+ "steelblue": [70, 130, 180],\r
+ "tan": [210, 180, 140],\r
+ "teal": [0, 128, 128],\r
+ "thistle": [216, 191, 216],\r
+ "tomato": [255, 99, 71],\r
+ "turquoise": [64, 224, 208],\r
+ "violet": [238, 130, 238],\r
+ "wheat": [245, 222, 179],\r
+ "white": [255, 255, 255],\r
+ "whitesmoke": [245, 245, 245],\r
+ "yellow": [255, 255, 0],\r
+ "yellowgreen": [154, 205, 50]\r
+};
+
+/* MIT license */
+
+
+var colorString = {
+ getRgba: getRgba,
+ getHsla: getHsla,
+ getRgb: getRgb,
+ getHsl: getHsl,
+ getHwb: getHwb,
+ getAlpha: getAlpha,
+
+ hexString: hexString,
+ rgbString: rgbString,
+ rgbaString: rgbaString,
+ percentString: percentString,
+ percentaString: percentaString,
+ hslString: hslString,
+ hslaString: hslaString,
+ hwbString: hwbString,
+ keyword: keyword
+};
+
+function getRgba(string) {
+ if (!string) {
+ return;
+ }
+ var abbr = /^#([a-fA-F0-9]{3,4})$/i,
+ hex = /^#([a-fA-F0-9]{6}([a-fA-F0-9]{2})?)$/i,
+ rgba = /^rgba?\(\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i,
+ per = /^rgba?\(\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i,
+ keyword = /(\w+)/;
+
+ var rgb = [0, 0, 0],
+ a = 1,
+ match = string.match(abbr),
+ hexAlpha = "";
+ if (match) {
+ match = match[1];
+ hexAlpha = match[3];
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = parseInt(match[i] + match[i], 16);
+ }
+ if (hexAlpha) {
+ a = Math.round((parseInt(hexAlpha + hexAlpha, 16) / 255) * 100) / 100;
+ }
+ }
+ else if (match = string.match(hex)) {
+ hexAlpha = match[2];
+ match = match[1];
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = parseInt(match.slice(i * 2, i * 2 + 2), 16);
+ }
+ if (hexAlpha) {
+ a = Math.round((parseInt(hexAlpha, 16) / 255) * 100) / 100;
+ }
+ }
+ else if (match = string.match(rgba)) {
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = parseInt(match[i + 1]);
+ }
+ a = parseFloat(match[4]);
+ }
+ else if (match = string.match(per)) {
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = Math.round(parseFloat(match[i + 1]) * 2.55);
+ }
+ a = parseFloat(match[4]);
+ }
+ else if (match = string.match(keyword)) {
+ if (match[1] == "transparent") {
+ return [0, 0, 0, 0];
+ }
+ rgb = colorName[match[1]];
+ if (!rgb) {
+ return;
+ }
+ }
+
+ for (var i = 0; i < rgb.length; i++) {
+ rgb[i] = scale(rgb[i], 0, 255);
+ }
+ if (!a && a != 0) {
+ a = 1;
+ }
+ else {
+ a = scale(a, 0, 1);
+ }
+ rgb[3] = a;
+ return rgb;
+}
+
+function getHsla(string) {
+ if (!string) {
+ return;
+ }
+ var hsl = /^hsla?\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
+ var match = string.match(hsl);
+ if (match) {
+ var alpha = parseFloat(match[4]);
+ var h = scale(parseInt(match[1]), 0, 360),
+ s = scale(parseFloat(match[2]), 0, 100),
+ l = scale(parseFloat(match[3]), 0, 100),
+ a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
+ return [h, s, l, a];
+ }
+}
+
+function getHwb(string) {
+ if (!string) {
+ return;
+ }
+ var hwb = /^hwb\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
+ var match = string.match(hwb);
+ if (match) {
+ var alpha = parseFloat(match[4]);
+ var h = scale(parseInt(match[1]), 0, 360),
+ w = scale(parseFloat(match[2]), 0, 100),
+ b = scale(parseFloat(match[3]), 0, 100),
+ a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
+ return [h, w, b, a];
+ }
+}
+
+function getRgb(string) {
+ var rgba = getRgba(string);
+ return rgba && rgba.slice(0, 3);
+}
+
+function getHsl(string) {
+ var hsla = getHsla(string);
+ return hsla && hsla.slice(0, 3);
+}
+
+function getAlpha(string) {
+ var vals = getRgba(string);
+ if (vals) {
+ return vals[3];
+ }
+ else if (vals = getHsla(string)) {
+ return vals[3];
+ }
+ else if (vals = getHwb(string)) {
+ return vals[3];
+ }
+}
+
+// generators
+function hexString(rgba, a) {
+ var a = (a !== undefined && rgba.length === 3) ? a : rgba[3];
+ return "#" + hexDouble(rgba[0])
+ + hexDouble(rgba[1])
+ + hexDouble(rgba[2])
+ + (
+ (a >= 0 && a < 1)
+ ? hexDouble(Math.round(a * 255))
+ : ""
+ );
+}
+
+function rgbString(rgba, alpha) {
+ if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
+ return rgbaString(rgba, alpha);
+ }
+ return "rgb(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2] + ")";
+}
+
+function rgbaString(rgba, alpha) {
+ if (alpha === undefined) {
+ alpha = (rgba[3] !== undefined ? rgba[3] : 1);
+ }
+ return "rgba(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2]
+ + ", " + alpha + ")";
+}
+
+function percentString(rgba, alpha) {
+ if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
+ return percentaString(rgba, alpha);
+ }
+ var r = Math.round(rgba[0]/255 * 100),
+ g = Math.round(rgba[1]/255 * 100),
+ b = Math.round(rgba[2]/255 * 100);
+
+ return "rgb(" + r + "%, " + g + "%, " + b + "%)";
+}
+
+function percentaString(rgba, alpha) {
+ var r = Math.round(rgba[0]/255 * 100),
+ g = Math.round(rgba[1]/255 * 100),
+ b = Math.round(rgba[2]/255 * 100);
+ return "rgba(" + r + "%, " + g + "%, " + b + "%, " + (alpha || rgba[3] || 1) + ")";
+}
+
+function hslString(hsla, alpha) {
+ if (alpha < 1 || (hsla[3] && hsla[3] < 1)) {
+ return hslaString(hsla, alpha);
+ }
+ return "hsl(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%)";
+}
+
+function hslaString(hsla, alpha) {
+ if (alpha === undefined) {
+ alpha = (hsla[3] !== undefined ? hsla[3] : 1);
+ }
+ return "hsla(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%, "
+ + alpha + ")";
+}
+
+// hwb is a bit different than rgb(a) & hsl(a) since there is no alpha specific syntax
+// (hwb have alpha optional & 1 is default value)
+function hwbString(hwb, alpha) {
+ if (alpha === undefined) {
+ alpha = (hwb[3] !== undefined ? hwb[3] : 1);
+ }
+ return "hwb(" + hwb[0] + ", " + hwb[1] + "%, " + hwb[2] + "%"
+ + (alpha !== undefined && alpha !== 1 ? ", " + alpha : "") + ")";
+}
+
+function keyword(rgb) {
+ return reverseNames[rgb.slice(0, 3)];
+}
+
+// helpers
+function scale(num, min, max) {
+ return Math.min(Math.max(min, num), max);
+}
+
+function hexDouble(num) {
+ var str = num.toString(16).toUpperCase();
+ return (str.length < 2) ? "0" + str : str;
+}
+
+
+//create a list of reverse color names
+var reverseNames = {};
+for (var name in colorName) {
+ reverseNames[colorName[name]] = name;
+}
+
+/* MIT license */
+
+
+
+var Color = function (obj) {
+ if (obj instanceof Color) {
+ return obj;
+ }
+ if (!(this instanceof Color)) {
+ return new Color(obj);
+ }
+
+ this.valid = false;
+ this.values = {
+ rgb: [0, 0, 0],
+ hsl: [0, 0, 0],
+ hsv: [0, 0, 0],
+ hwb: [0, 0, 0],
+ cmyk: [0, 0, 0, 0],
+ alpha: 1
+ };
+
+ // parse Color() argument
+ var vals;
+ if (typeof obj === 'string') {
+ vals = colorString.getRgba(obj);
+ if (vals) {
+ this.setValues('rgb', vals);
+ } else if (vals = colorString.getHsla(obj)) {
+ this.setValues('hsl', vals);
+ } else if (vals = colorString.getHwb(obj)) {
+ this.setValues('hwb', vals);
+ }
+ } else if (typeof obj === 'object') {
+ vals = obj;
+ if (vals.r !== undefined || vals.red !== undefined) {
+ this.setValues('rgb', vals);
+ } else if (vals.l !== undefined || vals.lightness !== undefined) {
+ this.setValues('hsl', vals);
+ } else if (vals.v !== undefined || vals.value !== undefined) {
+ this.setValues('hsv', vals);
+ } else if (vals.w !== undefined || vals.whiteness !== undefined) {
+ this.setValues('hwb', vals);
+ } else if (vals.c !== undefined || vals.cyan !== undefined) {
+ this.setValues('cmyk', vals);
+ }
+ }
+};
+
+Color.prototype = {
+ isValid: function () {
+ return this.valid;
+ },
+ rgb: function () {
+ return this.setSpace('rgb', arguments);
+ },
+ hsl: function () {
+ return this.setSpace('hsl', arguments);
+ },
+ hsv: function () {
+ return this.setSpace('hsv', arguments);
+ },
+ hwb: function () {
+ return this.setSpace('hwb', arguments);
+ },
+ cmyk: function () {
+ return this.setSpace('cmyk', arguments);
+ },
+
+ rgbArray: function () {
+ return this.values.rgb;
+ },
+ hslArray: function () {
+ return this.values.hsl;
+ },
+ hsvArray: function () {
+ return this.values.hsv;
+ },
+ hwbArray: function () {
+ var values = this.values;
+ if (values.alpha !== 1) {
+ return values.hwb.concat([values.alpha]);
+ }
+ return values.hwb;
+ },
+ cmykArray: function () {
+ return this.values.cmyk;
+ },
+ rgbaArray: function () {
+ var values = this.values;
+ return values.rgb.concat([values.alpha]);
+ },
+ hslaArray: function () {
+ var values = this.values;
+ return values.hsl.concat([values.alpha]);
+ },
+ alpha: function (val) {
+ if (val === undefined) {
+ return this.values.alpha;
+ }
+ this.setValues('alpha', val);
+ return this;
+ },
+
+ red: function (val) {
+ return this.setChannel('rgb', 0, val);
+ },
+ green: function (val) {
+ return this.setChannel('rgb', 1, val);
+ },
+ blue: function (val) {
+ return this.setChannel('rgb', 2, val);
+ },
+ hue: function (val) {
+ if (val) {
+ val %= 360;
+ val = val < 0 ? 360 + val : val;
+ }
+ return this.setChannel('hsl', 0, val);
+ },
+ saturation: function (val) {
+ return this.setChannel('hsl', 1, val);
+ },
+ lightness: function (val) {
+ return this.setChannel('hsl', 2, val);
+ },
+ saturationv: function (val) {
+ return this.setChannel('hsv', 1, val);
+ },
+ whiteness: function (val) {
+ return this.setChannel('hwb', 1, val);
+ },
+ blackness: function (val) {
+ return this.setChannel('hwb', 2, val);
+ },
+ value: function (val) {
+ return this.setChannel('hsv', 2, val);
+ },
+ cyan: function (val) {
+ return this.setChannel('cmyk', 0, val);
+ },
+ magenta: function (val) {
+ return this.setChannel('cmyk', 1, val);
+ },
+ yellow: function (val) {
+ return this.setChannel('cmyk', 2, val);
+ },
+ black: function (val) {
+ return this.setChannel('cmyk', 3, val);
+ },
+
+ hexString: function () {
+ return colorString.hexString(this.values.rgb);
+ },
+ rgbString: function () {
+ return colorString.rgbString(this.values.rgb, this.values.alpha);
+ },
+ rgbaString: function () {
+ return colorString.rgbaString(this.values.rgb, this.values.alpha);
+ },
+ percentString: function () {
+ return colorString.percentString(this.values.rgb, this.values.alpha);
+ },
+ hslString: function () {
+ return colorString.hslString(this.values.hsl, this.values.alpha);
+ },
+ hslaString: function () {
+ return colorString.hslaString(this.values.hsl, this.values.alpha);
+ },
+ hwbString: function () {
+ return colorString.hwbString(this.values.hwb, this.values.alpha);
+ },
+ keyword: function () {
+ return colorString.keyword(this.values.rgb, this.values.alpha);
+ },
+
+ rgbNumber: function () {
+ var rgb = this.values.rgb;
+ return (rgb[0] << 16) | (rgb[1] << 8) | rgb[2];
+ },
+
+ luminosity: function () {
+ // http://www.w3.org/TR/WCAG20/#relativeluminancedef
+ var rgb = this.values.rgb;
+ var lum = [];
+ for (var i = 0; i < rgb.length; i++) {
+ var chan = rgb[i] / 255;
+ lum[i] = (chan <= 0.03928) ? chan / 12.92 : Math.pow(((chan + 0.055) / 1.055), 2.4);
+ }
+ return 0.2126 * lum[0] + 0.7152 * lum[1] + 0.0722 * lum[2];
+ },
+
+ contrast: function (color2) {
+ // http://www.w3.org/TR/WCAG20/#contrast-ratiodef
+ var lum1 = this.luminosity();
+ var lum2 = color2.luminosity();
+ if (lum1 > lum2) {
+ return (lum1 + 0.05) / (lum2 + 0.05);
+ }
+ return (lum2 + 0.05) / (lum1 + 0.05);
+ },
+
+ level: function (color2) {
+ var contrastRatio = this.contrast(color2);
+ if (contrastRatio >= 7.1) {
+ return 'AAA';
+ }
+
+ return (contrastRatio >= 4.5) ? 'AA' : '';
+ },
+
+ dark: function () {
+ // YIQ equation from http://24ways.org/2010/calculating-color-contrast
+ var rgb = this.values.rgb;
+ var yiq = (rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000;
+ return yiq < 128;
+ },
+
+ light: function () {
+ return !this.dark();
+ },
+
+ negate: function () {
+ var rgb = [];
+ for (var i = 0; i < 3; i++) {
+ rgb[i] = 255 - this.values.rgb[i];
+ }
+ this.setValues('rgb', rgb);
+ return this;
+ },
+
+ lighten: function (ratio) {
+ var hsl = this.values.hsl;
+ hsl[2] += hsl[2] * ratio;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ darken: function (ratio) {
+ var hsl = this.values.hsl;
+ hsl[2] -= hsl[2] * ratio;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ saturate: function (ratio) {
+ var hsl = this.values.hsl;
+ hsl[1] += hsl[1] * ratio;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ desaturate: function (ratio) {
+ var hsl = this.values.hsl;
+ hsl[1] -= hsl[1] * ratio;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ whiten: function (ratio) {
+ var hwb = this.values.hwb;
+ hwb[1] += hwb[1] * ratio;
+ this.setValues('hwb', hwb);
+ return this;
+ },
+
+ blacken: function (ratio) {
+ var hwb = this.values.hwb;
+ hwb[2] += hwb[2] * ratio;
+ this.setValues('hwb', hwb);
+ return this;
+ },
+
+ greyscale: function () {
+ var rgb = this.values.rgb;
+ // http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale
+ var val = rgb[0] * 0.3 + rgb[1] * 0.59 + rgb[2] * 0.11;
+ this.setValues('rgb', [val, val, val]);
+ return this;
+ },
+
+ clearer: function (ratio) {
+ var alpha = this.values.alpha;
+ this.setValues('alpha', alpha - (alpha * ratio));
+ return this;
+ },
+
+ opaquer: function (ratio) {
+ var alpha = this.values.alpha;
+ this.setValues('alpha', alpha + (alpha * ratio));
+ return this;
+ },
+
+ rotate: function (degrees) {
+ var hsl = this.values.hsl;
+ var hue = (hsl[0] + degrees) % 360;
+ hsl[0] = hue < 0 ? 360 + hue : hue;
+ this.setValues('hsl', hsl);
+ return this;
+ },
+
+ /**
+ * Ported from sass implementation in C
+ * https://github.com/sass/libsass/blob/0e6b4a2850092356aa3ece07c6b249f0221caced/functions.cpp#L209
+ */
+ mix: function (mixinColor, weight) {
+ var color1 = this;
+ var color2 = mixinColor;
+ var p = weight === undefined ? 0.5 : weight;
+
+ var w = 2 * p - 1;
+ var a = color1.alpha() - color2.alpha();
+
+ var w1 = (((w * a === -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
+ var w2 = 1 - w1;
+
+ return this
+ .rgb(
+ w1 * color1.red() + w2 * color2.red(),
+ w1 * color1.green() + w2 * color2.green(),
+ w1 * color1.blue() + w2 * color2.blue()
+ )
+ .alpha(color1.alpha() * p + color2.alpha() * (1 - p));
+ },
+
+ toJSON: function () {
+ return this.rgb();
+ },
+
+ clone: function () {
+ // NOTE(SB): using node-clone creates a dependency to Buffer when using browserify,
+ // making the final build way to big to embed in Chart.js. So let's do it manually,
+ // assuming that values to clone are 1 dimension arrays containing only numbers,
+ // except 'alpha' which is a number.
+ var result = new Color();
+ var source = this.values;
+ var target = result.values;
+ var value, type;
+
+ for (var prop in source) {
+ if (source.hasOwnProperty(prop)) {
+ value = source[prop];
+ type = ({}).toString.call(value);
+ if (type === '[object Array]') {
+ target[prop] = value.slice(0);
+ } else if (type === '[object Number]') {
+ target[prop] = value;
+ } else {
+ console.error('unexpected color value:', value);
+ }
+ }
+ }
+
+ return result;
+ }
+};
+
+Color.prototype.spaces = {
+ rgb: ['red', 'green', 'blue'],
+ hsl: ['hue', 'saturation', 'lightness'],
+ hsv: ['hue', 'saturation', 'value'],
+ hwb: ['hue', 'whiteness', 'blackness'],
+ cmyk: ['cyan', 'magenta', 'yellow', 'black']
+};
+
+Color.prototype.maxes = {
+ rgb: [255, 255, 255],
+ hsl: [360, 100, 100],
+ hsv: [360, 100, 100],
+ hwb: [360, 100, 100],
+ cmyk: [100, 100, 100, 100]
+};
+
+Color.prototype.getValues = function (space) {
+ var values = this.values;
+ var vals = {};
+
+ for (var i = 0; i < space.length; i++) {
+ vals[space.charAt(i)] = values[space][i];
+ }
+
+ if (values.alpha !== 1) {
+ vals.a = values.alpha;
+ }
+
+ // {r: 255, g: 255, b: 255, a: 0.4}
+ return vals;
+};
+
+Color.prototype.setValues = function (space, vals) {
+ var values = this.values;
+ var spaces = this.spaces;
+ var maxes = this.maxes;
+ var alpha = 1;
+ var i;
+
+ this.valid = true;
+
+ if (space === 'alpha') {
+ alpha = vals;
+ } else if (vals.length) {
+ // [10, 10, 10]
+ values[space] = vals.slice(0, space.length);
+ alpha = vals[space.length];
+ } else if (vals[space.charAt(0)] !== undefined) {
+ // {r: 10, g: 10, b: 10}
+ for (i = 0; i < space.length; i++) {
+ values[space][i] = vals[space.charAt(i)];
+ }
+
+ alpha = vals.a;
+ } else if (vals[spaces[space][0]] !== undefined) {
+ // {red: 10, green: 10, blue: 10}
+ var chans = spaces[space];
+
+ for (i = 0; i < space.length; i++) {
+ values[space][i] = vals[chans[i]];
+ }
+
+ alpha = vals.alpha;
+ }
+
+ values.alpha = Math.max(0, Math.min(1, (alpha === undefined ? values.alpha : alpha)));
+
+ if (space === 'alpha') {
+ return false;
+ }
+
+ var capped;
+
+ // cap values of the space prior converting all values
+ for (i = 0; i < space.length; i++) {
+ capped = Math.max(0, Math.min(maxes[space][i], values[space][i]));
+ values[space][i] = Math.round(capped);
+ }
+
+ // convert to all the other color spaces
+ for (var sname in spaces) {
+ if (sname !== space) {
+ values[sname] = colorConvert[space][sname](values[space]);
+ }
+ }
+
+ return true;
+};
+
+Color.prototype.setSpace = function (space, args) {
+ var vals = args[0];
+
+ if (vals === undefined) {
+ // color.rgb()
+ return this.getValues(space);
+ }
+
+ // color.rgb(10, 10, 10)
+ if (typeof vals === 'number') {
+ vals = Array.prototype.slice.call(args);
+ }
+
+ this.setValues(space, vals);
+ return this;
+};
+
+Color.prototype.setChannel = function (space, index, val) {
+ var svalues = this.values[space];
+ if (val === undefined) {
+ // color.red()
+ return svalues[index];
+ } else if (val === svalues[index]) {
+ // color.red(color.red())
+ return this;
+ }
+
+ // color.red(100)
+ svalues[index] = val;
+ this.setValues(space, svalues);
+
+ return this;
+};
+
+if (typeof window !== 'undefined') {
+ window.Color = Color;
+}
+
+var chartjsColor = Color;
+
+/**
+ * @namespace Chart.helpers
+ */
+var helpers = {
+ /**
+ * An empty function that can be used, for example, for optional callback.
+ */
+ noop: function() {},
+
+ /**
+ * Returns a unique id, sequentially generated from a global variable.
+ * @returns {number}
+ * @function
+ */
+ uid: (function() {
+ var id = 0;
+ return function() {
+ return id++;
+ };
+ }()),
+
+ /**
+ * Returns true if `value` is neither null nor undefined, else returns false.
+ * @param {*} value - The value to test.
+ * @returns {boolean}
+ * @since 2.7.0
+ */
+ isNullOrUndef: function(value) {
+ return value === null || typeof value === 'undefined';
+ },
+
+ /**
+ * Returns true if `value` is an array (including typed arrays), else returns false.
+ * @param {*} value - The value to test.
+ * @returns {boolean}
+ * @function
+ */
+ isArray: function(value) {
+ if (Array.isArray && Array.isArray(value)) {
+ return true;
+ }
+ var type = Object.prototype.toString.call(value);
+ if (type.substr(0, 7) === '[object' && type.substr(-6) === 'Array]') {
+ return true;
+ }
+ return false;
+ },
+
+ /**
+ * Returns true if `value` is an object (excluding null), else returns false.
+ * @param {*} value - The value to test.
+ * @returns {boolean}
+ * @since 2.7.0
+ */
+ isObject: function(value) {
+ return value !== null && Object.prototype.toString.call(value) === '[object Object]';
+ },
+
+ /**
+ * Returns true if `value` is a finite number, else returns false
+ * @param {*} value - The value to test.
+ * @returns {boolean}
+ */
+ isFinite: function(value) {
+ return (typeof value === 'number' || value instanceof Number) && isFinite(value);
+ },
+
+ /**
+ * Returns `value` if defined, else returns `defaultValue`.
+ * @param {*} value - The value to return if defined.
+ * @param {*} defaultValue - The value to return if `value` is undefined.
+ * @returns {*}
+ */
+ valueOrDefault: function(value, defaultValue) {
+ return typeof value === 'undefined' ? defaultValue : value;
+ },
+
+ /**
+ * Returns value at the given `index` in array if defined, else returns `defaultValue`.
+ * @param {Array} value - The array to lookup for value at `index`.
+ * @param {number} index - The index in `value` to lookup for value.
+ * @param {*} defaultValue - The value to return if `value[index]` is undefined.
+ * @returns {*}
+ */
+ valueAtIndexOrDefault: function(value, index, defaultValue) {
+ return helpers.valueOrDefault(helpers.isArray(value) ? value[index] : value, defaultValue);
+ },
+
+ /**
+ * Calls `fn` with the given `args` in the scope defined by `thisArg` and returns the
+ * value returned by `fn`. If `fn` is not a function, this method returns undefined.
+ * @param {function} fn - The function to call.
+ * @param {Array|undefined|null} args - The arguments with which `fn` should be called.
+ * @param {object} [thisArg] - The value of `this` provided for the call to `fn`.
+ * @returns {*}
+ */
+ callback: function(fn, args, thisArg) {
+ if (fn && typeof fn.call === 'function') {
+ return fn.apply(thisArg, args);
+ }
+ },
+
+ /**
+ * Note(SB) for performance sake, this method should only be used when loopable type
+ * is unknown or in none intensive code (not called often and small loopable). Else
+ * it's preferable to use a regular for() loop and save extra function calls.
+ * @param {object|Array} loopable - The object or array to be iterated.
+ * @param {function} fn - The function to call for each item.
+ * @param {object} [thisArg] - The value of `this` provided for the call to `fn`.
+ * @param {boolean} [reverse] - If true, iterates backward on the loopable.
+ */
+ each: function(loopable, fn, thisArg, reverse) {
+ var i, len, keys;
+ if (helpers.isArray(loopable)) {
+ len = loopable.length;
+ if (reverse) {
+ for (i = len - 1; i >= 0; i--) {
+ fn.call(thisArg, loopable[i], i);
+ }
+ } else {
+ for (i = 0; i < len; i++) {
+ fn.call(thisArg, loopable[i], i);
+ }
+ }
+ } else if (helpers.isObject(loopable)) {
+ keys = Object.keys(loopable);
+ len = keys.length;
+ for (i = 0; i < len; i++) {
+ fn.call(thisArg, loopable[keys[i]], keys[i]);
+ }
+ }
+ },
+
+ /**
+ * Returns true if the `a0` and `a1` arrays have the same content, else returns false.
+ * @see https://stackoverflow.com/a/14853974
+ * @param {Array} a0 - The array to compare
+ * @param {Array} a1 - The array to compare
+ * @returns {boolean}
+ */
+ arrayEquals: function(a0, a1) {
+ var i, ilen, v0, v1;
+
+ if (!a0 || !a1 || a0.length !== a1.length) {
+ return false;
+ }
+
+ for (i = 0, ilen = a0.length; i < ilen; ++i) {
+ v0 = a0[i];
+ v1 = a1[i];
+
+ if (v0 instanceof Array && v1 instanceof Array) {
+ if (!helpers.arrayEquals(v0, v1)) {
+ return false;
+ }
+ } else if (v0 !== v1) {
+ // NOTE: two different object instances will never be equal: {x:20} != {x:20}
+ return false;
+ }
+ }
+
+ return true;
+ },
+
+ /**
+ * Returns a deep copy of `source` without keeping references on objects and arrays.
+ * @param {*} source - The value to clone.
+ * @returns {*}
+ */
+ clone: function(source) {
+ if (helpers.isArray(source)) {
+ return source.map(helpers.clone);
+ }
+
+ if (helpers.isObject(source)) {
+ var target = {};
+ var keys = Object.keys(source);
+ var klen = keys.length;
+ var k = 0;
+
+ for (; k < klen; ++k) {
+ target[keys[k]] = helpers.clone(source[keys[k]]);
+ }
+
+ return target;
+ }
+
+ return source;
+ },
+
+ /**
+ * The default merger when Chart.helpers.merge is called without merger option.
+ * Note(SB): also used by mergeConfig and mergeScaleConfig as fallback.
+ * @private
+ */
+ _merger: function(key, target, source, options) {
+ var tval = target[key];
+ var sval = source[key];
+
+ if (helpers.isObject(tval) && helpers.isObject(sval)) {
+ helpers.merge(tval, sval, options);
+ } else {
+ target[key] = helpers.clone(sval);
+ }
+ },
+
+ /**
+ * Merges source[key] in target[key] only if target[key] is undefined.
+ * @private
+ */
+ _mergerIf: function(key, target, source) {
+ var tval = target[key];
+ var sval = source[key];
+
+ if (helpers.isObject(tval) && helpers.isObject(sval)) {
+ helpers.mergeIf(tval, sval);
+ } else if (!target.hasOwnProperty(key)) {
+ target[key] = helpers.clone(sval);
+ }
+ },
+
+ /**
+ * Recursively deep copies `source` properties into `target` with the given `options`.
+ * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
+ * @param {object} target - The target object in which all sources are merged into.
+ * @param {object|object[]} source - Object(s) to merge into `target`.
+ * @param {object} [options] - Merging options:
+ * @param {function} [options.merger] - The merge method (key, target, source, options)
+ * @returns {object} The `target` object.
+ */
+ merge: function(target, source, options) {
+ var sources = helpers.isArray(source) ? source : [source];
+ var ilen = sources.length;
+ var merge, i, keys, klen, k;
+
+ if (!helpers.isObject(target)) {
+ return target;
+ }
+
+ options = options || {};
+ merge = options.merger || helpers._merger;
+
+ for (i = 0; i < ilen; ++i) {
+ source = sources[i];
+ if (!helpers.isObject(source)) {
+ continue;
+ }
+
+ keys = Object.keys(source);
+ for (k = 0, klen = keys.length; k < klen; ++k) {
+ merge(keys[k], target, source, options);
+ }
+ }
+
+ return target;
+ },
+
+ /**
+ * Recursively deep copies `source` properties into `target` *only* if not defined in target.
+ * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
+ * @param {object} target - The target object in which all sources are merged into.
+ * @param {object|object[]} source - Object(s) to merge into `target`.
+ * @returns {object} The `target` object.
+ */
+ mergeIf: function(target, source) {
+ return helpers.merge(target, source, {merger: helpers._mergerIf});
+ },
+
+ /**
+ * Applies the contents of two or more objects together into the first object.
+ * @param {object} target - The target object in which all objects are merged into.
+ * @param {object} arg1 - Object containing additional properties to merge in target.
+ * @param {object} argN - Additional objects containing properties to merge in target.
+ * @returns {object} The `target` object.
+ */
+ extend: function(target) {
+ var setFn = function(value, key) {
+ target[key] = value;
+ };
+ for (var i = 1, ilen = arguments.length; i < ilen; ++i) {
+ helpers.each(arguments[i], setFn);
+ }
+ return target;
+ },
+
+ /**
+ * Basic javascript inheritance based on the model created in Backbone.js
+ */
+ inherits: function(extensions) {
+ var me = this;
+ var ChartElement = (extensions && extensions.hasOwnProperty('constructor')) ? extensions.constructor : function() {
+ return me.apply(this, arguments);
+ };
+
+ var Surrogate = function() {
+ this.constructor = ChartElement;
+ };
+
+ Surrogate.prototype = me.prototype;
+ ChartElement.prototype = new Surrogate();
+ ChartElement.extend = helpers.inherits;
+
+ if (extensions) {
+ helpers.extend(ChartElement.prototype, extensions);
+ }
+
+ ChartElement.__super__ = me.prototype;
+ return ChartElement;
+ }
+};
+
+var helpers_core = helpers;
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.callback instead.
+ * @function Chart.helpers.callCallback
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers.callCallback = helpers.callback;
+
+/**
+ * Provided for backward compatibility, use Array.prototype.indexOf instead.
+ * Array.prototype.indexOf compatibility: Chrome, Opera, Safari, FF1.5+, IE9+
+ * @function Chart.helpers.indexOf
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers.indexOf = function(array, item, fromIndex) {
+ return Array.prototype.indexOf.call(array, item, fromIndex);
+};
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.valueOrDefault instead.
+ * @function Chart.helpers.getValueOrDefault
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers.getValueOrDefault = helpers.valueOrDefault;
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.valueAtIndexOrDefault instead.
+ * @function Chart.helpers.getValueAtIndexOrDefault
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers.getValueAtIndexOrDefault = helpers.valueAtIndexOrDefault;
+
+/**
+ * Easing functions adapted from Robert Penner's easing equations.
+ * @namespace Chart.helpers.easingEffects
+ * @see http://www.robertpenner.com/easing/
+ */
+var effects = {
+ linear: function(t) {
+ return t;
+ },
+
+ easeInQuad: function(t) {
+ return t * t;
+ },
+
+ easeOutQuad: function(t) {
+ return -t * (t - 2);
+ },
+
+ easeInOutQuad: function(t) {
+ if ((t /= 0.5) < 1) {
+ return 0.5 * t * t;
+ }
+ return -0.5 * ((--t) * (t - 2) - 1);
+ },
+
+ easeInCubic: function(t) {
+ return t * t * t;
+ },
+
+ easeOutCubic: function(t) {
+ return (t = t - 1) * t * t + 1;
+ },
+
+ easeInOutCubic: function(t) {
+ if ((t /= 0.5) < 1) {
+ return 0.5 * t * t * t;
+ }
+ return 0.5 * ((t -= 2) * t * t + 2);
+ },
+
+ easeInQuart: function(t) {
+ return t * t * t * t;
+ },
+
+ easeOutQuart: function(t) {
+ return -((t = t - 1) * t * t * t - 1);
+ },
+
+ easeInOutQuart: function(t) {
+ if ((t /= 0.5) < 1) {
+ return 0.5 * t * t * t * t;
+ }
+ return -0.5 * ((t -= 2) * t * t * t - 2);
+ },
+
+ easeInQuint: function(t) {
+ return t * t * t * t * t;
+ },
+
+ easeOutQuint: function(t) {
+ return (t = t - 1) * t * t * t * t + 1;
+ },
+
+ easeInOutQuint: function(t) {
+ if ((t /= 0.5) < 1) {
+ return 0.5 * t * t * t * t * t;
+ }
+ return 0.5 * ((t -= 2) * t * t * t * t + 2);
+ },
+
+ easeInSine: function(t) {
+ return -Math.cos(t * (Math.PI / 2)) + 1;
+ },
+
+ easeOutSine: function(t) {
+ return Math.sin(t * (Math.PI / 2));
+ },
+
+ easeInOutSine: function(t) {
+ return -0.5 * (Math.cos(Math.PI * t) - 1);
+ },
+
+ easeInExpo: function(t) {
+ return (t === 0) ? 0 : Math.pow(2, 10 * (t - 1));
+ },
+
+ easeOutExpo: function(t) {
+ return (t === 1) ? 1 : -Math.pow(2, -10 * t) + 1;
+ },
+
+ easeInOutExpo: function(t) {
+ if (t === 0) {
+ return 0;
+ }
+ if (t === 1) {
+ return 1;
+ }
+ if ((t /= 0.5) < 1) {
+ return 0.5 * Math.pow(2, 10 * (t - 1));
+ }
+ return 0.5 * (-Math.pow(2, -10 * --t) + 2);
+ },
+
+ easeInCirc: function(t) {
+ if (t >= 1) {
+ return t;
+ }
+ return -(Math.sqrt(1 - t * t) - 1);
+ },
+
+ easeOutCirc: function(t) {
+ return Math.sqrt(1 - (t = t - 1) * t);
+ },
+
+ easeInOutCirc: function(t) {
+ if ((t /= 0.5) < 1) {
+ return -0.5 * (Math.sqrt(1 - t * t) - 1);
+ }
+ return 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1);
+ },
+
+ easeInElastic: function(t) {
+ var s = 1.70158;
+ var p = 0;
+ var a = 1;
+ if (t === 0) {
+ return 0;
+ }
+ if (t === 1) {
+ return 1;
+ }
+ if (!p) {
+ p = 0.3;
+ }
+ if (a < 1) {
+ a = 1;
+ s = p / 4;
+ } else {
+ s = p / (2 * Math.PI) * Math.asin(1 / a);
+ }
+ return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
+ },
+
+ easeOutElastic: function(t) {
+ var s = 1.70158;
+ var p = 0;
+ var a = 1;
+ if (t === 0) {
+ return 0;
+ }
+ if (t === 1) {
+ return 1;
+ }
+ if (!p) {
+ p = 0.3;
+ }
+ if (a < 1) {
+ a = 1;
+ s = p / 4;
+ } else {
+ s = p / (2 * Math.PI) * Math.asin(1 / a);
+ }
+ return a * Math.pow(2, -10 * t) * Math.sin((t - s) * (2 * Math.PI) / p) + 1;
+ },
+
+ easeInOutElastic: function(t) {
+ var s = 1.70158;
+ var p = 0;
+ var a = 1;
+ if (t === 0) {
+ return 0;
+ }
+ if ((t /= 0.5) === 2) {
+ return 1;
+ }
+ if (!p) {
+ p = 0.45;
+ }
+ if (a < 1) {
+ a = 1;
+ s = p / 4;
+ } else {
+ s = p / (2 * Math.PI) * Math.asin(1 / a);
+ }
+ if (t < 1) {
+ return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
+ }
+ return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p) * 0.5 + 1;
+ },
+ easeInBack: function(t) {
+ var s = 1.70158;
+ return t * t * ((s + 1) * t - s);
+ },
+
+ easeOutBack: function(t) {
+ var s = 1.70158;
+ return (t = t - 1) * t * ((s + 1) * t + s) + 1;
+ },
+
+ easeInOutBack: function(t) {
+ var s = 1.70158;
+ if ((t /= 0.5) < 1) {
+ return 0.5 * (t * t * (((s *= (1.525)) + 1) * t - s));
+ }
+ return 0.5 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
+ },
+
+ easeInBounce: function(t) {
+ return 1 - effects.easeOutBounce(1 - t);
+ },
+
+ easeOutBounce: function(t) {
+ if (t < (1 / 2.75)) {
+ return 7.5625 * t * t;
+ }
+ if (t < (2 / 2.75)) {
+ return 7.5625 * (t -= (1.5 / 2.75)) * t + 0.75;
+ }
+ if (t < (2.5 / 2.75)) {
+ return 7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375;
+ }
+ return 7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375;
+ },
+
+ easeInOutBounce: function(t) {
+ if (t < 0.5) {
+ return effects.easeInBounce(t * 2) * 0.5;
+ }
+ return effects.easeOutBounce(t * 2 - 1) * 0.5 + 0.5;
+ }
+};
+
+var helpers_easing = {
+ effects: effects
+};
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.easing.effects instead.
+ * @function Chart.helpers.easingEffects
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers_core.easingEffects = effects;
+
+var PI = Math.PI;
+var RAD_PER_DEG = PI / 180;
+var DOUBLE_PI = PI * 2;
+var HALF_PI = PI / 2;
+var QUARTER_PI = PI / 4;
+var TWO_THIRDS_PI = PI * 2 / 3;
+
+/**
+ * @namespace Chart.helpers.canvas
+ */
+var exports$1 = {
+ /**
+ * Clears the entire canvas associated to the given `chart`.
+ * @param {Chart} chart - The chart for which to clear the canvas.
+ */
+ clear: function(chart) {
+ chart.ctx.clearRect(0, 0, chart.width, chart.height);
+ },
+
+ /**
+ * Creates a "path" for a rectangle with rounded corners at position (x, y) with a
+ * given size (width, height) and the same `radius` for all corners.
+ * @param {CanvasRenderingContext2D} ctx - The canvas 2D Context.
+ * @param {number} x - The x axis of the coordinate for the rectangle starting point.
+ * @param {number} y - The y axis of the coordinate for the rectangle starting point.
+ * @param {number} width - The rectangle's width.
+ * @param {number} height - The rectangle's height.
+ * @param {number} radius - The rounded amount (in pixels) for the four corners.
+ * @todo handle `radius` as top-left, top-right, bottom-right, bottom-left array/object?
+ */
+ roundedRect: function(ctx, x, y, width, height, radius) {
+ if (radius) {
+ var r = Math.min(radius, height / 2, width / 2);
+ var left = x + r;
+ var top = y + r;
+ var right = x + width - r;
+ var bottom = y + height - r;
+
+ ctx.moveTo(x, top);
+ if (left < right && top < bottom) {
+ ctx.arc(left, top, r, -PI, -HALF_PI);
+ ctx.arc(right, top, r, -HALF_PI, 0);
+ ctx.arc(right, bottom, r, 0, HALF_PI);
+ ctx.arc(left, bottom, r, HALF_PI, PI);
+ } else if (left < right) {
+ ctx.moveTo(left, y);
+ ctx.arc(right, top, r, -HALF_PI, HALF_PI);
+ ctx.arc(left, top, r, HALF_PI, PI + HALF_PI);
+ } else if (top < bottom) {
+ ctx.arc(left, top, r, -PI, 0);
+ ctx.arc(left, bottom, r, 0, PI);
+ } else {
+ ctx.arc(left, top, r, -PI, PI);
+ }
+ ctx.closePath();
+ ctx.moveTo(x, y);
+ } else {
+ ctx.rect(x, y, width, height);
+ }
+ },
+
+ drawPoint: function(ctx, style, radius, x, y, rotation) {
+ var type, xOffset, yOffset, size, cornerRadius;
+ var rad = (rotation || 0) * RAD_PER_DEG;
+
+ if (style && typeof style === 'object') {
+ type = style.toString();
+ if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') {
+ ctx.drawImage(style, x - style.width / 2, y - style.height / 2, style.width, style.height);
+ return;
+ }
+ }
+
+ if (isNaN(radius) || radius <= 0) {
+ return;
+ }
+
+ ctx.beginPath();
+
+ switch (style) {
+ // Default includes circle
+ default:
+ ctx.arc(x, y, radius, 0, DOUBLE_PI);
+ ctx.closePath();
+ break;
+ case 'triangle':
+ ctx.moveTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
+ rad += TWO_THIRDS_PI;
+ ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
+ rad += TWO_THIRDS_PI;
+ ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
+ ctx.closePath();
+ break;
+ case 'rectRounded':
+ // NOTE: the rounded rect implementation changed to use `arc` instead of
+ // `quadraticCurveTo` since it generates better results when rect is
+ // almost a circle. 0.516 (instead of 0.5) produces results with visually
+ // closer proportion to the previous impl and it is inscribed in the
+ // circle with `radius`. For more details, see the following PRs:
+ // https://github.com/chartjs/Chart.js/issues/5597
+ // https://github.com/chartjs/Chart.js/issues/5858
+ cornerRadius = radius * 0.516;
+ size = radius - cornerRadius;
+ xOffset = Math.cos(rad + QUARTER_PI) * size;
+ yOffset = Math.sin(rad + QUARTER_PI) * size;
+ ctx.arc(x - xOffset, y - yOffset, cornerRadius, rad - PI, rad - HALF_PI);
+ ctx.arc(x + yOffset, y - xOffset, cornerRadius, rad - HALF_PI, rad);
+ ctx.arc(x + xOffset, y + yOffset, cornerRadius, rad, rad + HALF_PI);
+ ctx.arc(x - yOffset, y + xOffset, cornerRadius, rad + HALF_PI, rad + PI);
+ ctx.closePath();
+ break;
+ case 'rect':
+ if (!rotation) {
+ size = Math.SQRT1_2 * radius;
+ ctx.rect(x - size, y - size, 2 * size, 2 * size);
+ break;
+ }
+ rad += QUARTER_PI;
+ /* falls through */
+ case 'rectRot':
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + yOffset, y - xOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.lineTo(x - yOffset, y + xOffset);
+ ctx.closePath();
+ break;
+ case 'crossRot':
+ rad += QUARTER_PI;
+ /* falls through */
+ case 'cross':
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.moveTo(x + yOffset, y - xOffset);
+ ctx.lineTo(x - yOffset, y + xOffset);
+ break;
+ case 'star':
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.moveTo(x + yOffset, y - xOffset);
+ ctx.lineTo(x - yOffset, y + xOffset);
+ rad += QUARTER_PI;
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.moveTo(x + yOffset, y - xOffset);
+ ctx.lineTo(x - yOffset, y + xOffset);
+ break;
+ case 'line':
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ break;
+ case 'dash':
+ ctx.moveTo(x, y);
+ ctx.lineTo(x + Math.cos(rad) * radius, y + Math.sin(rad) * radius);
+ break;
+ }
+
+ ctx.fill();
+ ctx.stroke();
+ },
+
+ /**
+ * Returns true if the point is inside the rectangle
+ * @param {object} point - The point to test
+ * @param {object} area - The rectangle
+ * @returns {boolean}
+ * @private
+ */
+ _isPointInArea: function(point, area) {
+ var epsilon = 1e-6; // 1e-6 is margin in pixels for accumulated error.
+
+ return point.x > area.left - epsilon && point.x < area.right + epsilon &&
+ point.y > area.top - epsilon && point.y < area.bottom + epsilon;
+ },
+
+ clipArea: function(ctx, area) {
+ ctx.save();
+ ctx.beginPath();
+ ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top);
+ ctx.clip();
+ },
+
+ unclipArea: function(ctx) {
+ ctx.restore();
+ },
+
+ lineTo: function(ctx, previous, target, flip) {
+ var stepped = target.steppedLine;
+ if (stepped) {
+ if (stepped === 'middle') {
+ var midpoint = (previous.x + target.x) / 2.0;
+ ctx.lineTo(midpoint, flip ? target.y : previous.y);
+ ctx.lineTo(midpoint, flip ? previous.y : target.y);
+ } else if ((stepped === 'after' && !flip) || (stepped !== 'after' && flip)) {
+ ctx.lineTo(previous.x, target.y);
+ } else {
+ ctx.lineTo(target.x, previous.y);
+ }
+ ctx.lineTo(target.x, target.y);
+ return;
+ }
+
+ if (!target.tension) {
+ ctx.lineTo(target.x, target.y);
+ return;
+ }
+
+ ctx.bezierCurveTo(
+ flip ? previous.controlPointPreviousX : previous.controlPointNextX,
+ flip ? previous.controlPointPreviousY : previous.controlPointNextY,
+ flip ? target.controlPointNextX : target.controlPointPreviousX,
+ flip ? target.controlPointNextY : target.controlPointPreviousY,
+ target.x,
+ target.y);
+ }
+};
+
+var helpers_canvas = exports$1;
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.canvas.clear instead.
+ * @namespace Chart.helpers.clear
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers_core.clear = exports$1.clear;
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.canvas.roundedRect instead.
+ * @namespace Chart.helpers.drawRoundedRectangle
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers_core.drawRoundedRectangle = function(ctx) {
+ ctx.beginPath();
+ exports$1.roundedRect.apply(exports$1, arguments);
+};
+
+var defaults = {
+ /**
+ * @private
+ */
+ _set: function(scope, values) {
+ return helpers_core.merge(this[scope] || (this[scope] = {}), values);
+ }
+};
+
+defaults._set('global', {
+ defaultColor: 'rgba(0,0,0,0.1)',
+ defaultFontColor: '#666',
+ defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
+ defaultFontSize: 12,
+ defaultFontStyle: 'normal',
+ defaultLineHeight: 1.2,
+ showLines: true
+});
+
+var core_defaults = defaults;
+
+var valueOrDefault = helpers_core.valueOrDefault;
+
+/**
+ * Converts the given font object into a CSS font string.
+ * @param {object} font - A font object.
+ * @return {string} The CSS font string. See https://developer.mozilla.org/en-US/docs/Web/CSS/font
+ * @private
+ */
+function toFontString(font) {
+ if (!font || helpers_core.isNullOrUndef(font.size) || helpers_core.isNullOrUndef(font.family)) {
+ return null;
+ }
+
+ return (font.style ? font.style + ' ' : '')
+ + (font.weight ? font.weight + ' ' : '')
+ + font.size + 'px '
+ + font.family;
+}
+
+/**
+ * @alias Chart.helpers.options
+ * @namespace
+ */
+var helpers_options = {
+ /**
+ * Converts the given line height `value` in pixels for a specific font `size`.
+ * @param {number|string} value - The lineHeight to parse (eg. 1.6, '14px', '75%', '1.6em').
+ * @param {number} size - The font size (in pixels) used to resolve relative `value`.
+ * @returns {number} The effective line height in pixels (size * 1.2 if value is invalid).
+ * @see https://developer.mozilla.org/en-US/docs/Web/CSS/line-height
+ * @since 2.7.0
+ */
+ toLineHeight: function(value, size) {
+ var matches = ('' + value).match(/^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/);
+ if (!matches || matches[1] === 'normal') {
+ return size * 1.2;
+ }
+
+ value = +matches[2];
+
+ switch (matches[3]) {
+ case 'px':
+ return value;
+ case '%':
+ value /= 100;
+ break;
+ default:
+ break;
+ }
+
+ return size * value;
+ },
+
+ /**
+ * Converts the given value into a padding object with pre-computed width/height.
+ * @param {number|object} value - If a number, set the value to all TRBL component,
+ * else, if and object, use defined properties and sets undefined ones to 0.
+ * @returns {object} The padding values (top, right, bottom, left, width, height)
+ * @since 2.7.0
+ */
+ toPadding: function(value) {
+ var t, r, b, l;
+
+ if (helpers_core.isObject(value)) {
+ t = +value.top || 0;
+ r = +value.right || 0;
+ b = +value.bottom || 0;
+ l = +value.left || 0;
+ } else {
+ t = r = b = l = +value || 0;
+ }
+
+ return {
+ top: t,
+ right: r,
+ bottom: b,
+ left: l,
+ height: t + b,
+ width: l + r
+ };
+ },
+
+ /**
+ * Parses font options and returns the font object.
+ * @param {object} options - A object that contains font options to be parsed.
+ * @return {object} The font object.
+ * @todo Support font.* options and renamed to toFont().
+ * @private
+ */
+ _parseFont: function(options) {
+ var globalDefaults = core_defaults.global;
+ var size = valueOrDefault(options.fontSize, globalDefaults.defaultFontSize);
+ var font = {
+ family: valueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily),
+ lineHeight: helpers_core.options.toLineHeight(valueOrDefault(options.lineHeight, globalDefaults.defaultLineHeight), size),
+ size: size,
+ style: valueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle),
+ weight: null,
+ string: ''
+ };
+
+ font.string = toFontString(font);
+ return font;
+ },
+
+ /**
+ * Evaluates the given `inputs` sequentially and returns the first defined value.
+ * @param {Array} inputs - An array of values, falling back to the last value.
+ * @param {object} [context] - If defined and the current value is a function, the value
+ * is called with `context` as first argument and the result becomes the new input.
+ * @param {number} [index] - If defined and the current value is an array, the value
+ * at `index` become the new input.
+ * @since 2.7.0
+ */
+ resolve: function(inputs, context, index) {
+ var i, ilen, value;
+
+ for (i = 0, ilen = inputs.length; i < ilen; ++i) {
+ value = inputs[i];
+ if (value === undefined) {
+ continue;
+ }
+ if (context !== undefined && typeof value === 'function') {
+ value = value(context);
+ }
+ if (index !== undefined && helpers_core.isArray(value)) {
+ value = value[index];
+ }
+ if (value !== undefined) {
+ return value;
+ }
+ }
+ }
+};
+
+var helpers$1 = helpers_core;
+var easing = helpers_easing;
+var canvas = helpers_canvas;
+var options = helpers_options;
+helpers$1.easing = easing;
+helpers$1.canvas = canvas;
+helpers$1.options = options;
+
+function interpolate(start, view, model, ease) {
+ var keys = Object.keys(model);
+ var i, ilen, key, actual, origin, target, type, c0, c1;
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+
+ target = model[key];
+
+ // if a value is added to the model after pivot() has been called, the view
+ // doesn't contain it, so let's initialize the view to the target value.
+ if (!view.hasOwnProperty(key)) {
+ view[key] = target;
+ }
+
+ actual = view[key];
+
+ if (actual === target || key[0] === '_') {
+ continue;
+ }
+
+ if (!start.hasOwnProperty(key)) {
+ start[key] = actual;
+ }
+
+ origin = start[key];
+
+ type = typeof target;
+
+ if (type === typeof origin) {
+ if (type === 'string') {
+ c0 = chartjsColor(origin);
+ if (c0.valid) {
+ c1 = chartjsColor(target);
+ if (c1.valid) {
+ view[key] = c1.mix(c0, ease).rgbString();
+ continue;
+ }
+ }
+ } else if (helpers$1.isFinite(origin) && helpers$1.isFinite(target)) {
+ view[key] = origin + (target - origin) * ease;
+ continue;
+ }
+ }
+
+ view[key] = target;
+ }
+}
+
+var Element = function(configuration) {
+ helpers$1.extend(this, configuration);
+ this.initialize.apply(this, arguments);
+};
+
+helpers$1.extend(Element.prototype, {
+
+ initialize: function() {
+ this.hidden = false;
+ },
+
+ pivot: function() {
+ var me = this;
+ if (!me._view) {
+ me._view = helpers$1.clone(me._model);
+ }
+ me._start = {};
+ return me;
+ },
+
+ transition: function(ease) {
+ var me = this;
+ var model = me._model;
+ var start = me._start;
+ var view = me._view;
+
+ // No animation -> No Transition
+ if (!model || ease === 1) {
+ me._view = model;
+ me._start = null;
+ return me;
+ }
+
+ if (!view) {
+ view = me._view = {};
+ }
+
+ if (!start) {
+ start = me._start = {};
+ }
+
+ interpolate(start, view, model, ease);
+
+ return me;
+ },
+
+ tooltipPosition: function() {
+ return {
+ x: this._model.x,
+ y: this._model.y
+ };
+ },
+
+ hasValue: function() {
+ return helpers$1.isNumber(this._model.x) && helpers$1.isNumber(this._model.y);
+ }
+});
+
+Element.extend = helpers$1.inherits;
+
+var core_element = Element;
+
+var exports$2 = core_element.extend({
+ chart: null, // the animation associated chart instance
+ currentStep: 0, // the current animation step
+ numSteps: 60, // default number of steps
+ easing: '', // the easing to use for this animation
+ render: null, // render function used by the animation service
+
+ onAnimationProgress: null, // user specified callback to fire on each step of the animation
+ onAnimationComplete: null, // user specified callback to fire when the animation finishes
+});
+
+var core_animation = exports$2;
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart.Animation instead
+ * @prop Chart.Animation#animationObject
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ */
+Object.defineProperty(exports$2.prototype, 'animationObject', {
+ get: function() {
+ return this;
+ }
+});
+
+/**
+ * Provided for backward compatibility, use Chart.Animation#chart instead
+ * @prop Chart.Animation#chartInstance
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ */
+Object.defineProperty(exports$2.prototype, 'chartInstance', {
+ get: function() {
+ return this.chart;
+ },
+ set: function(value) {
+ this.chart = value;
+ }
+});
+
+core_defaults._set('global', {
+ animation: {
+ duration: 1000,
+ easing: 'easeOutQuart',
+ onProgress: helpers$1.noop,
+ onComplete: helpers$1.noop
+ }
+});
+
+var core_animations = {
+ animations: [],
+ request: null,
+
+ /**
+ * @param {Chart} chart - The chart to animate.
+ * @param {Chart.Animation} animation - The animation that we will animate.
+ * @param {number} duration - The animation duration in ms.
+ * @param {boolean} lazy - if true, the chart is not marked as animating to enable more responsive interactions
+ */
+ addAnimation: function(chart, animation, duration, lazy) {
+ var animations = this.animations;
+ var i, ilen;
+
+ animation.chart = chart;
+ animation.startTime = Date.now();
+ animation.duration = duration;
+
+ if (!lazy) {
+ chart.animating = true;
+ }
+
+ for (i = 0, ilen = animations.length; i < ilen; ++i) {
+ if (animations[i].chart === chart) {
+ animations[i] = animation;
+ return;
+ }
+ }
+
+ animations.push(animation);
+
+ // If there are no animations queued, manually kickstart a digest, for lack of a better word
+ if (animations.length === 1) {
+ this.requestAnimationFrame();
+ }
+ },
+
+ cancelAnimation: function(chart) {
+ var index = helpers$1.findIndex(this.animations, function(animation) {
+ return animation.chart === chart;
+ });
+
+ if (index !== -1) {
+ this.animations.splice(index, 1);
+ chart.animating = false;
+ }
+ },
+
+ requestAnimationFrame: function() {
+ var me = this;
+ if (me.request === null) {
+ // Skip animation frame requests until the active one is executed.
+ // This can happen when processing mouse events, e.g. 'mousemove'
+ // and 'mouseout' events will trigger multiple renders.
+ me.request = helpers$1.requestAnimFrame.call(window, function() {
+ me.request = null;
+ me.startDigest();
+ });
+ }
+ },
+
+ /**
+ * @private
+ */
+ startDigest: function() {
+ var me = this;
+
+ me.advance();
+
+ // Do we have more stuff to animate?
+ if (me.animations.length > 0) {
+ me.requestAnimationFrame();
+ }
+ },
+
+ /**
+ * @private
+ */
+ advance: function() {
+ var animations = this.animations;
+ var animation, chart, numSteps, nextStep;
+ var i = 0;
+
+ // 1 animation per chart, so we are looping charts here
+ while (i < animations.length) {
+ animation = animations[i];
+ chart = animation.chart;
+ numSteps = animation.numSteps;
+
+ // Make sure that currentStep starts at 1
+ // https://github.com/chartjs/Chart.js/issues/6104
+ nextStep = Math.floor((Date.now() - animation.startTime) / animation.duration * numSteps) + 1;
+ animation.currentStep = Math.min(nextStep, numSteps);
+
+ helpers$1.callback(animation.render, [chart, animation], chart);
+ helpers$1.callback(animation.onAnimationProgress, [animation], chart);
+
+ if (animation.currentStep >= numSteps) {
+ helpers$1.callback(animation.onAnimationComplete, [animation], chart);
+ chart.animating = false;
+ animations.splice(i, 1);
+ } else {
+ ++i;
+ }
+ }
+ }
+};
+
+var resolve = helpers$1.options.resolve;
+
+var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift'];
+
+/**
+ * Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice',
+ * 'unshift') and notify the listener AFTER the array has been altered. Listeners are
+ * called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments.
+ */
+function listenArrayEvents(array, listener) {
+ if (array._chartjs) {
+ array._chartjs.listeners.push(listener);
+ return;
+ }
+
+ Object.defineProperty(array, '_chartjs', {
+ configurable: true,
+ enumerable: false,
+ value: {
+ listeners: [listener]
+ }
+ });
+
+ arrayEvents.forEach(function(key) {
+ var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1);
+ var base = array[key];
+
+ Object.defineProperty(array, key, {
+ configurable: true,
+ enumerable: false,
+ value: function() {
+ var args = Array.prototype.slice.call(arguments);
+ var res = base.apply(this, args);
+
+ helpers$1.each(array._chartjs.listeners, function(object) {
+ if (typeof object[method] === 'function') {
+ object[method].apply(object, args);
+ }
+ });
+
+ return res;
+ }
+ });
+ });
+}
+
+/**
+ * Removes the given array event listener and cleanup extra attached properties (such as
+ * the _chartjs stub and overridden methods) if array doesn't have any more listeners.
+ */
+function unlistenArrayEvents(array, listener) {
+ var stub = array._chartjs;
+ if (!stub) {
+ return;
+ }
+
+ var listeners = stub.listeners;
+ var index = listeners.indexOf(listener);
+ if (index !== -1) {
+ listeners.splice(index, 1);
+ }
+
+ if (listeners.length > 0) {
+ return;
+ }
+
+ arrayEvents.forEach(function(key) {
+ delete array[key];
+ });
+
+ delete array._chartjs;
+}
+
+// Base class for all dataset controllers (line, bar, etc)
+var DatasetController = function(chart, datasetIndex) {
+ this.initialize(chart, datasetIndex);
+};
+
+helpers$1.extend(DatasetController.prototype, {
+
+ /**
+ * Element type used to generate a meta dataset (e.g. Chart.element.Line).
+ * @type {Chart.core.element}
+ */
+ datasetElementType: null,
+
+ /**
+ * Element type used to generate a meta data (e.g. Chart.element.Point).
+ * @type {Chart.core.element}
+ */
+ dataElementType: null,
+
+ initialize: function(chart, datasetIndex) {
+ var me = this;
+ me.chart = chart;
+ me.index = datasetIndex;
+ me.linkScales();
+ me.addElements();
+ },
+
+ updateIndex: function(datasetIndex) {
+ this.index = datasetIndex;
+ },
+
+ linkScales: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var dataset = me.getDataset();
+
+ if (meta.xAxisID === null || !(meta.xAxisID in me.chart.scales)) {
+ meta.xAxisID = dataset.xAxisID || me.chart.options.scales.xAxes[0].id;
+ }
+ if (meta.yAxisID === null || !(meta.yAxisID in me.chart.scales)) {
+ meta.yAxisID = dataset.yAxisID || me.chart.options.scales.yAxes[0].id;
+ }
+ },
+
+ getDataset: function() {
+ return this.chart.data.datasets[this.index];
+ },
+
+ getMeta: function() {
+ return this.chart.getDatasetMeta(this.index);
+ },
+
+ getScaleForId: function(scaleID) {
+ return this.chart.scales[scaleID];
+ },
+
+ /**
+ * @private
+ */
+ _getValueScaleId: function() {
+ return this.getMeta().yAxisID;
+ },
+
+ /**
+ * @private
+ */
+ _getIndexScaleId: function() {
+ return this.getMeta().xAxisID;
+ },
+
+ /**
+ * @private
+ */
+ _getValueScale: function() {
+ return this.getScaleForId(this._getValueScaleId());
+ },
+
+ /**
+ * @private
+ */
+ _getIndexScale: function() {
+ return this.getScaleForId(this._getIndexScaleId());
+ },
+
+ reset: function() {
+ this.update(true);
+ },
+
+ /**
+ * @private
+ */
+ destroy: function() {
+ if (this._data) {
+ unlistenArrayEvents(this._data, this);
+ }
+ },
+
+ createMetaDataset: function() {
+ var me = this;
+ var type = me.datasetElementType;
+ return type && new type({
+ _chart: me.chart,
+ _datasetIndex: me.index
+ });
+ },
+
+ createMetaData: function(index) {
+ var me = this;
+ var type = me.dataElementType;
+ return type && new type({
+ _chart: me.chart,
+ _datasetIndex: me.index,
+ _index: index
+ });
+ },
+
+ addElements: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var data = me.getDataset().data || [];
+ var metaData = meta.data;
+ var i, ilen;
+
+ for (i = 0, ilen = data.length; i < ilen; ++i) {
+ metaData[i] = metaData[i] || me.createMetaData(i);
+ }
+
+ meta.dataset = meta.dataset || me.createMetaDataset();
+ },
+
+ addElementAndReset: function(index) {
+ var element = this.createMetaData(index);
+ this.getMeta().data.splice(index, 0, element);
+ this.updateElement(element, index, true);
+ },
+
+ buildOrUpdateElements: function() {
+ var me = this;
+ var dataset = me.getDataset();
+ var data = dataset.data || (dataset.data = []);
+
+ // In order to correctly handle data addition/deletion animation (an thus simulate
+ // real-time charts), we need to monitor these data modifications and synchronize
+ // the internal meta data accordingly.
+ if (me._data !== data) {
+ if (me._data) {
+ // This case happens when the user replaced the data array instance.
+ unlistenArrayEvents(me._data, me);
+ }
+
+ if (data && Object.isExtensible(data)) {
+ listenArrayEvents(data, me);
+ }
+ me._data = data;
+ }
+
+ // Re-sync meta data in case the user replaced the data array or if we missed
+ // any updates and so make sure that we handle number of datapoints changing.
+ me.resyncElements();
+ },
+
+ update: helpers$1.noop,
+
+ transition: function(easingValue) {
+ var meta = this.getMeta();
+ var elements = meta.data || [];
+ var ilen = elements.length;
+ var i = 0;
+
+ for (; i < ilen; ++i) {
+ elements[i].transition(easingValue);
+ }
+
+ if (meta.dataset) {
+ meta.dataset.transition(easingValue);
+ }
+ },
+
+ draw: function() {
+ var meta = this.getMeta();
+ var elements = meta.data || [];
+ var ilen = elements.length;
+ var i = 0;
+
+ if (meta.dataset) {
+ meta.dataset.draw();
+ }
+
+ for (; i < ilen; ++i) {
+ elements[i].draw();
+ }
+ },
+
+ removeHoverStyle: function(element) {
+ helpers$1.merge(element._model, element.$previousStyle || {});
+ delete element.$previousStyle;
+ },
+
+ setHoverStyle: function(element) {
+ var dataset = this.chart.data.datasets[element._datasetIndex];
+ var index = element._index;
+ var custom = element.custom || {};
+ var model = element._model;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ element.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth
+ };
+
+ model.backgroundColor = resolve([custom.hoverBackgroundColor, dataset.hoverBackgroundColor, getHoverColor(model.backgroundColor)], undefined, index);
+ model.borderColor = resolve([custom.hoverBorderColor, dataset.hoverBorderColor, getHoverColor(model.borderColor)], undefined, index);
+ model.borderWidth = resolve([custom.hoverBorderWidth, dataset.hoverBorderWidth, model.borderWidth], undefined, index);
+ },
+
+ /**
+ * @private
+ */
+ resyncElements: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var data = me.getDataset().data;
+ var numMeta = meta.data.length;
+ var numData = data.length;
+
+ if (numData < numMeta) {
+ meta.data.splice(numData, numMeta - numData);
+ } else if (numData > numMeta) {
+ me.insertElements(numMeta, numData - numMeta);
+ }
+ },
+
+ /**
+ * @private
+ */
+ insertElements: function(start, count) {
+ for (var i = 0; i < count; ++i) {
+ this.addElementAndReset(start + i);
+ }
+ },
+
+ /**
+ * @private
+ */
+ onDataPush: function() {
+ var count = arguments.length;
+ this.insertElements(this.getDataset().data.length - count, count);
+ },
+
+ /**
+ * @private
+ */
+ onDataPop: function() {
+ this.getMeta().data.pop();
+ },
+
+ /**
+ * @private
+ */
+ onDataShift: function() {
+ this.getMeta().data.shift();
+ },
+
+ /**
+ * @private
+ */
+ onDataSplice: function(start, count) {
+ this.getMeta().data.splice(start, count);
+ this.insertElements(start, arguments.length - 2);
+ },
+
+ /**
+ * @private
+ */
+ onDataUnshift: function() {
+ this.insertElements(0, arguments.length);
+ }
+});
+
+DatasetController.extend = helpers$1.inherits;
+
+var core_datasetController = DatasetController;
+
+core_defaults._set('global', {
+ elements: {
+ arc: {
+ backgroundColor: core_defaults.global.defaultColor,
+ borderColor: '#fff',
+ borderWidth: 2,
+ borderAlign: 'center'
+ }
+ }
+});
+
+var element_arc = core_element.extend({
+ inLabelRange: function(mouseX) {
+ var vm = this._view;
+
+ if (vm) {
+ return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2));
+ }
+ return false;
+ },
+
+ inRange: function(chartX, chartY) {
+ var vm = this._view;
+
+ if (vm) {
+ var pointRelativePosition = helpers$1.getAngleFromPoint(vm, {x: chartX, y: chartY});
+ var angle = pointRelativePosition.angle;
+ var distance = pointRelativePosition.distance;
+
+ // Sanitise angle range
+ var startAngle = vm.startAngle;
+ var endAngle = vm.endAngle;
+ while (endAngle < startAngle) {
+ endAngle += 2.0 * Math.PI;
+ }
+ while (angle > endAngle) {
+ angle -= 2.0 * Math.PI;
+ }
+ while (angle < startAngle) {
+ angle += 2.0 * Math.PI;
+ }
+
+ // Check if within the range of the open/close angle
+ var betweenAngles = (angle >= startAngle && angle <= endAngle);
+ var withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius);
+
+ return (betweenAngles && withinRadius);
+ }
+ return false;
+ },
+
+ getCenterPoint: function() {
+ var vm = this._view;
+ var halfAngle = (vm.startAngle + vm.endAngle) / 2;
+ var halfRadius = (vm.innerRadius + vm.outerRadius) / 2;
+ return {
+ x: vm.x + Math.cos(halfAngle) * halfRadius,
+ y: vm.y + Math.sin(halfAngle) * halfRadius
+ };
+ },
+
+ getArea: function() {
+ var vm = this._view;
+ return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2));
+ },
+
+ tooltipPosition: function() {
+ var vm = this._view;
+ var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2);
+ var rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius;
+
+ return {
+ x: vm.x + (Math.cos(centreAngle) * rangeFromCentre),
+ y: vm.y + (Math.sin(centreAngle) * rangeFromCentre)
+ };
+ },
+
+ draw: function() {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
+ var sA = vm.startAngle;
+ var eA = vm.endAngle;
+ var pixelMargin = (vm.borderAlign === 'inner') ? 0.33 : 0;
+ var angleMargin;
+
+ ctx.save();
+
+ ctx.beginPath();
+ ctx.arc(vm.x, vm.y, Math.max(vm.outerRadius - pixelMargin, 0), sA, eA);
+ ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true);
+ ctx.closePath();
+
+ ctx.fillStyle = vm.backgroundColor;
+ ctx.fill();
+
+ if (vm.borderWidth) {
+ if (vm.borderAlign === 'inner') {
+ // Draw an inner border by cliping the arc and drawing a double-width border
+ // Enlarge the clipping arc by 0.33 pixels to eliminate glitches between borders
+ ctx.beginPath();
+ angleMargin = pixelMargin / vm.outerRadius;
+ ctx.arc(vm.x, vm.y, vm.outerRadius, sA - angleMargin, eA + angleMargin);
+ if (vm.innerRadius > pixelMargin) {
+ angleMargin = pixelMargin / vm.innerRadius;
+ ctx.arc(vm.x, vm.y, vm.innerRadius - pixelMargin, eA + angleMargin, sA - angleMargin, true);
+ } else {
+ ctx.arc(vm.x, vm.y, pixelMargin, eA + Math.PI / 2, sA - Math.PI / 2);
+ }
+ ctx.closePath();
+ ctx.clip();
+
+ ctx.beginPath();
+ ctx.arc(vm.x, vm.y, vm.outerRadius, sA, eA);
+ ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true);
+ ctx.closePath();
+
+ ctx.lineWidth = vm.borderWidth * 2;
+ ctx.lineJoin = 'round';
+ } else {
+ ctx.lineWidth = vm.borderWidth;
+ ctx.lineJoin = 'bevel';
+ }
+
+ ctx.strokeStyle = vm.borderColor;
+ ctx.stroke();
+ }
+
+ ctx.restore();
+ }
+});
+
+var valueOrDefault$1 = helpers$1.valueOrDefault;
+
+var defaultColor = core_defaults.global.defaultColor;
+
+core_defaults._set('global', {
+ elements: {
+ line: {
+ tension: 0.4,
+ backgroundColor: defaultColor,
+ borderWidth: 3,
+ borderColor: defaultColor,
+ borderCapStyle: 'butt',
+ borderDash: [],
+ borderDashOffset: 0.0,
+ borderJoinStyle: 'miter',
+ capBezierPoints: true,
+ fill: true, // do we fill in the area between the line and its base axis
+ }
+ }
+});
+
+var element_line = core_element.extend({
+ draw: function() {
+ var me = this;
+ var vm = me._view;
+ var ctx = me._chart.ctx;
+ var spanGaps = vm.spanGaps;
+ var points = me._children.slice(); // clone array
+ var globalDefaults = core_defaults.global;
+ var globalOptionLineElements = globalDefaults.elements.line;
+ var lastDrawnIndex = -1;
+ var index, current, previous, currentVM;
+
+ // If we are looping, adding the first point again
+ if (me._loop && points.length) {
+ points.push(points[0]);
+ }
+
+ ctx.save();
+
+ // Stroke Line Options
+ ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle;
+
+ // IE 9 and 10 do not support line dash
+ if (ctx.setLineDash) {
+ ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash);
+ }
+
+ ctx.lineDashOffset = valueOrDefault$1(vm.borderDashOffset, globalOptionLineElements.borderDashOffset);
+ ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle;
+ ctx.lineWidth = valueOrDefault$1(vm.borderWidth, globalOptionLineElements.borderWidth);
+ ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor;
+
+ // Stroke Line
+ ctx.beginPath();
+ lastDrawnIndex = -1;
+
+ for (index = 0; index < points.length; ++index) {
+ current = points[index];
+ previous = helpers$1.previousItem(points, index);
+ currentVM = current._view;
+
+ // First point moves to it's starting position no matter what
+ if (index === 0) {
+ if (!currentVM.skip) {
+ ctx.moveTo(currentVM.x, currentVM.y);
+ lastDrawnIndex = index;
+ }
+ } else {
+ previous = lastDrawnIndex === -1 ? previous : points[lastDrawnIndex];
+
+ if (!currentVM.skip) {
+ if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) {
+ // There was a gap and this is the first point after the gap
+ ctx.moveTo(currentVM.x, currentVM.y);
+ } else {
+ // Line to next point
+ helpers$1.canvas.lineTo(ctx, previous._view, current._view);
+ }
+ lastDrawnIndex = index;
+ }
+ }
+ }
+
+ ctx.stroke();
+ ctx.restore();
+ }
+});
+
+var valueOrDefault$2 = helpers$1.valueOrDefault;
+
+var defaultColor$1 = core_defaults.global.defaultColor;
+
+core_defaults._set('global', {
+ elements: {
+ point: {
+ radius: 3,
+ pointStyle: 'circle',
+ backgroundColor: defaultColor$1,
+ borderColor: defaultColor$1,
+ borderWidth: 1,
+ // Hover
+ hitRadius: 1,
+ hoverRadius: 4,
+ hoverBorderWidth: 1
+ }
+ }
+});
+
+function xRange(mouseX) {
+ var vm = this._view;
+ return vm ? (Math.abs(mouseX - vm.x) < vm.radius + vm.hitRadius) : false;
+}
+
+function yRange(mouseY) {
+ var vm = this._view;
+ return vm ? (Math.abs(mouseY - vm.y) < vm.radius + vm.hitRadius) : false;
+}
+
+var element_point = core_element.extend({
+ inRange: function(mouseX, mouseY) {
+ var vm = this._view;
+ return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false;
+ },
+
+ inLabelRange: xRange,
+ inXRange: xRange,
+ inYRange: yRange,
+
+ getCenterPoint: function() {
+ var vm = this._view;
+ return {
+ x: vm.x,
+ y: vm.y
+ };
+ },
+
+ getArea: function() {
+ return Math.PI * Math.pow(this._view.radius, 2);
+ },
+
+ tooltipPosition: function() {
+ var vm = this._view;
+ return {
+ x: vm.x,
+ y: vm.y,
+ padding: vm.radius + vm.borderWidth
+ };
+ },
+
+ draw: function(chartArea) {
+ var vm = this._view;
+ var ctx = this._chart.ctx;
+ var pointStyle = vm.pointStyle;
+ var rotation = vm.rotation;
+ var radius = vm.radius;
+ var x = vm.x;
+ var y = vm.y;
+ var globalDefaults = core_defaults.global;
+ var defaultColor = globalDefaults.defaultColor; // eslint-disable-line no-shadow
+
+ if (vm.skip) {
+ return;
+ }
+
+ // Clipping for Points.
+ if (chartArea === undefined || helpers$1.canvas._isPointInArea(vm, chartArea)) {
+ ctx.strokeStyle = vm.borderColor || defaultColor;
+ ctx.lineWidth = valueOrDefault$2(vm.borderWidth, globalDefaults.elements.point.borderWidth);
+ ctx.fillStyle = vm.backgroundColor || defaultColor;
+ helpers$1.canvas.drawPoint(ctx, pointStyle, radius, x, y, rotation);
+ }
+ }
+});
+
+var defaultColor$2 = core_defaults.global.defaultColor;
+
+core_defaults._set('global', {
+ elements: {
+ rectangle: {
+ backgroundColor: defaultColor$2,
+ borderColor: defaultColor$2,
+ borderSkipped: 'bottom',
+ borderWidth: 0
+ }
+ }
+});
+
+function isVertical(vm) {
+ return vm && vm.width !== undefined;
+}
+
+/**
+ * Helper function to get the bounds of the bar regardless of the orientation
+ * @param bar {Chart.Element.Rectangle} the bar
+ * @return {Bounds} bounds of the bar
+ * @private
+ */
+function getBarBounds(vm) {
+ var x1, x2, y1, y2, half;
+
+ if (isVertical(vm)) {
+ half = vm.width / 2;
+ x1 = vm.x - half;
+ x2 = vm.x + half;
+ y1 = Math.min(vm.y, vm.base);
+ y2 = Math.max(vm.y, vm.base);
+ } else {
+ half = vm.height / 2;
+ x1 = Math.min(vm.x, vm.base);
+ x2 = Math.max(vm.x, vm.base);
+ y1 = vm.y - half;
+ y2 = vm.y + half;
+ }
+
+ return {
+ left: x1,
+ top: y1,
+ right: x2,
+ bottom: y2
+ };
+}
+
+function swap(orig, v1, v2) {
+ return orig === v1 ? v2 : orig === v2 ? v1 : orig;
+}
+
+function parseBorderSkipped(vm) {
+ var edge = vm.borderSkipped;
+ var res = {};
+
+ if (!edge) {
+ return res;
+ }
+
+ if (vm.horizontal) {
+ if (vm.base > vm.x) {
+ edge = swap(edge, 'left', 'right');
+ }
+ } else if (vm.base < vm.y) {
+ edge = swap(edge, 'bottom', 'top');
+ }
+
+ res[edge] = true;
+ return res;
+}
+
+function parseBorderWidth(vm, maxW, maxH) {
+ var value = vm.borderWidth;
+ var skip = parseBorderSkipped(vm);
+ var t, r, b, l;
+
+ if (helpers$1.isObject(value)) {
+ t = +value.top || 0;
+ r = +value.right || 0;
+ b = +value.bottom || 0;
+ l = +value.left || 0;
+ } else {
+ t = r = b = l = +value || 0;
+ }
+
+ return {
+ t: skip.top || (t < 0) ? 0 : t > maxH ? maxH : t,
+ r: skip.right || (r < 0) ? 0 : r > maxW ? maxW : r,
+ b: skip.bottom || (b < 0) ? 0 : b > maxH ? maxH : b,
+ l: skip.left || (l < 0) ? 0 : l > maxW ? maxW : l
+ };
+}
+
+function boundingRects(vm) {
+ var bounds = getBarBounds(vm);
+ var width = bounds.right - bounds.left;
+ var height = bounds.bottom - bounds.top;
+ var border = parseBorderWidth(vm, width / 2, height / 2);
+
+ return {
+ outer: {
+ x: bounds.left,
+ y: bounds.top,
+ w: width,
+ h: height
+ },
+ inner: {
+ x: bounds.left + border.l,
+ y: bounds.top + border.t,
+ w: width - border.l - border.r,
+ h: height - border.t - border.b
+ }
+ };
+}
+
+function inRange(vm, x, y) {
+ var skipX = x === null;
+ var skipY = y === null;
+ var bounds = !vm || (skipX && skipY) ? false : getBarBounds(vm);
+
+ return bounds
+ && (skipX || x >= bounds.left && x <= bounds.right)
+ && (skipY || y >= bounds.top && y <= bounds.bottom);
+}
+
+var element_rectangle = core_element.extend({
+ draw: function() {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
+ var rects = boundingRects(vm);
+ var outer = rects.outer;
+ var inner = rects.inner;
+
+ ctx.fillStyle = vm.backgroundColor;
+ ctx.fillRect(outer.x, outer.y, outer.w, outer.h);
+
+ if (outer.w === inner.w && outer.h === inner.h) {
+ return;
+ }
+
+ ctx.save();
+ ctx.beginPath();
+ ctx.rect(outer.x, outer.y, outer.w, outer.h);
+ ctx.clip();
+ ctx.fillStyle = vm.borderColor;
+ ctx.rect(inner.x, inner.y, inner.w, inner.h);
+ ctx.fill('evenodd');
+ ctx.restore();
+ },
+
+ height: function() {
+ var vm = this._view;
+ return vm.base - vm.y;
+ },
+
+ inRange: function(mouseX, mouseY) {
+ return inRange(this._view, mouseX, mouseY);
+ },
+
+ inLabelRange: function(mouseX, mouseY) {
+ var vm = this._view;
+ return isVertical(vm)
+ ? inRange(vm, mouseX, null)
+ : inRange(vm, null, mouseY);
+ },
+
+ inXRange: function(mouseX) {
+ return inRange(this._view, mouseX, null);
+ },
+
+ inYRange: function(mouseY) {
+ return inRange(this._view, null, mouseY);
+ },
+
+ getCenterPoint: function() {
+ var vm = this._view;
+ var x, y;
+ if (isVertical(vm)) {
+ x = vm.x;
+ y = (vm.y + vm.base) / 2;
+ } else {
+ x = (vm.x + vm.base) / 2;
+ y = vm.y;
+ }
+
+ return {x: x, y: y};
+ },
+
+ getArea: function() {
+ var vm = this._view;
+
+ return isVertical(vm)
+ ? vm.width * Math.abs(vm.y - vm.base)
+ : vm.height * Math.abs(vm.x - vm.base);
+ },
+
+ tooltipPosition: function() {
+ var vm = this._view;
+ return {
+ x: vm.x,
+ y: vm.y
+ };
+ }
+});
+
+var elements = {};
+var Arc = element_arc;
+var Line = element_line;
+var Point = element_point;
+var Rectangle = element_rectangle;
+elements.Arc = Arc;
+elements.Line = Line;
+elements.Point = Point;
+elements.Rectangle = Rectangle;
+
+var resolve$1 = helpers$1.options.resolve;
+
+core_defaults._set('bar', {
+ hover: {
+ mode: 'label'
+ },
+
+ scales: {
+ xAxes: [{
+ type: 'category',
+ categoryPercentage: 0.8,
+ barPercentage: 0.9,
+ offset: true,
+ gridLines: {
+ offsetGridLines: true
+ }
+ }],
+
+ yAxes: [{
+ type: 'linear'
+ }]
+ }
+});
+
+/**
+ * Computes the "optimal" sample size to maintain bars equally sized while preventing overlap.
+ * @private
+ */
+function computeMinSampleSize(scale, pixels) {
+ var min = scale.isHorizontal() ? scale.width : scale.height;
+ var ticks = scale.getTicks();
+ var prev, curr, i, ilen;
+
+ for (i = 1, ilen = pixels.length; i < ilen; ++i) {
+ min = Math.min(min, Math.abs(pixels[i] - pixels[i - 1]));
+ }
+
+ for (i = 0, ilen = ticks.length; i < ilen; ++i) {
+ curr = scale.getPixelForTick(i);
+ min = i > 0 ? Math.min(min, curr - prev) : min;
+ prev = curr;
+ }
+
+ return min;
+}
+
+/**
+ * Computes an "ideal" category based on the absolute bar thickness or, if undefined or null,
+ * uses the smallest interval (see computeMinSampleSize) that prevents bar overlapping. This
+ * mode currently always generates bars equally sized (until we introduce scriptable options?).
+ * @private
+ */
+function computeFitCategoryTraits(index, ruler, options) {
+ var thickness = options.barThickness;
+ var count = ruler.stackCount;
+ var curr = ruler.pixels[index];
+ var size, ratio;
+
+ if (helpers$1.isNullOrUndef(thickness)) {
+ size = ruler.min * options.categoryPercentage;
+ ratio = options.barPercentage;
+ } else {
+ // When bar thickness is enforced, category and bar percentages are ignored.
+ // Note(SB): we could add support for relative bar thickness (e.g. barThickness: '50%')
+ // and deprecate barPercentage since this value is ignored when thickness is absolute.
+ size = thickness * count;
+ ratio = 1;
+ }
+
+ return {
+ chunk: size / count,
+ ratio: ratio,
+ start: curr - (size / 2)
+ };
+}
+
+/**
+ * Computes an "optimal" category that globally arranges bars side by side (no gap when
+ * percentage options are 1), based on the previous and following categories. This mode
+ * generates bars with different widths when data are not evenly spaced.
+ * @private
+ */
+function computeFlexCategoryTraits(index, ruler, options) {
+ var pixels = ruler.pixels;
+ var curr = pixels[index];
+ var prev = index > 0 ? pixels[index - 1] : null;
+ var next = index < pixels.length - 1 ? pixels[index + 1] : null;
+ var percent = options.categoryPercentage;
+ var start, size;
+
+ if (prev === null) {
+ // first data: its size is double based on the next point or,
+ // if it's also the last data, we use the scale size.
+ prev = curr - (next === null ? ruler.end - ruler.start : next - curr);
+ }
+
+ if (next === null) {
+ // last data: its size is also double based on the previous point.
+ next = curr + curr - prev;
+ }
+
+ start = curr - (curr - Math.min(prev, next)) / 2 * percent;
+ size = Math.abs(next - prev) / 2 * percent;
+
+ return {
+ chunk: size / ruler.stackCount,
+ ratio: options.barPercentage,
+ start: start
+ };
+}
+
+var controller_bar = core_datasetController.extend({
+
+ dataElementType: elements.Rectangle,
+
+ initialize: function() {
+ var me = this;
+ var meta;
+
+ core_datasetController.prototype.initialize.apply(me, arguments);
+
+ meta = me.getMeta();
+ meta.stack = me.getDataset().stack;
+ meta.bar = true;
+ },
+
+ update: function(reset) {
+ var me = this;
+ var rects = me.getMeta().data;
+ var i, ilen;
+
+ me._ruler = me.getRuler();
+
+ for (i = 0, ilen = rects.length; i < ilen; ++i) {
+ me.updateElement(rects[i], i, reset);
+ }
+ },
+
+ updateElement: function(rectangle, index, reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var dataset = me.getDataset();
+ var options = me._resolveElementOptions(rectangle, index);
+
+ rectangle._xScale = me.getScaleForId(meta.xAxisID);
+ rectangle._yScale = me.getScaleForId(meta.yAxisID);
+ rectangle._datasetIndex = me.index;
+ rectangle._index = index;
+ rectangle._model = {
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderSkipped: options.borderSkipped,
+ borderWidth: options.borderWidth,
+ datasetLabel: dataset.label,
+ label: me.chart.data.labels[index]
+ };
+
+ me._updateElementGeometry(rectangle, index, reset);
+
+ rectangle.pivot();
+ },
+
+ /**
+ * @private
+ */
+ _updateElementGeometry: function(rectangle, index, reset) {
+ var me = this;
+ var model = rectangle._model;
+ var vscale = me._getValueScale();
+ var base = vscale.getBasePixel();
+ var horizontal = vscale.isHorizontal();
+ var ruler = me._ruler || me.getRuler();
+ var vpixels = me.calculateBarValuePixels(me.index, index);
+ var ipixels = me.calculateBarIndexPixels(me.index, index, ruler);
+
+ model.horizontal = horizontal;
+ model.base = reset ? base : vpixels.base;
+ model.x = horizontal ? reset ? base : vpixels.head : ipixels.center;
+ model.y = horizontal ? ipixels.center : reset ? base : vpixels.head;
+ model.height = horizontal ? ipixels.size : undefined;
+ model.width = horizontal ? undefined : ipixels.size;
+ },
+
+ /**
+ * Returns the stacks based on groups and bar visibility.
+ * @param {number} [last] - The dataset index
+ * @returns {string[]} The list of stack IDs
+ * @private
+ */
+ _getStacks: function(last) {
+ var me = this;
+ var chart = me.chart;
+ var scale = me._getIndexScale();
+ var stacked = scale.options.stacked;
+ var ilen = last === undefined ? chart.data.datasets.length : last + 1;
+ var stacks = [];
+ var i, meta;
+
+ for (i = 0; i < ilen; ++i) {
+ meta = chart.getDatasetMeta(i);
+ if (meta.bar && chart.isDatasetVisible(i) &&
+ (stacked === false ||
+ (stacked === true && stacks.indexOf(meta.stack) === -1) ||
+ (stacked === undefined && (meta.stack === undefined || stacks.indexOf(meta.stack) === -1)))) {
+ stacks.push(meta.stack);
+ }
+ }
+
+ return stacks;
+ },
+
+ /**
+ * Returns the effective number of stacks based on groups and bar visibility.
+ * @private
+ */
+ getStackCount: function() {
+ return this._getStacks().length;
+ },
+
+ /**
+ * Returns the stack index for the given dataset based on groups and bar visibility.
+ * @param {number} [datasetIndex] - The dataset index
+ * @param {string} [name] - The stack name to find
+ * @returns {number} The stack index
+ * @private
+ */
+ getStackIndex: function(datasetIndex, name) {
+ var stacks = this._getStacks(datasetIndex);
+ var index = (name !== undefined)
+ ? stacks.indexOf(name)
+ : -1; // indexOf returns -1 if element is not present
+
+ return (index === -1)
+ ? stacks.length - 1
+ : index;
+ },
+
+ /**
+ * @private
+ */
+ getRuler: function() {
+ var me = this;
+ var scale = me._getIndexScale();
+ var stackCount = me.getStackCount();
+ var datasetIndex = me.index;
+ var isHorizontal = scale.isHorizontal();
+ var start = isHorizontal ? scale.left : scale.top;
+ var end = start + (isHorizontal ? scale.width : scale.height);
+ var pixels = [];
+ var i, ilen, min;
+
+ for (i = 0, ilen = me.getMeta().data.length; i < ilen; ++i) {
+ pixels.push(scale.getPixelForValue(null, i, datasetIndex));
+ }
+
+ min = helpers$1.isNullOrUndef(scale.options.barThickness)
+ ? computeMinSampleSize(scale, pixels)
+ : -1;
+
+ return {
+ min: min,
+ pixels: pixels,
+ start: start,
+ end: end,
+ stackCount: stackCount,
+ scale: scale
+ };
+ },
+
+ /**
+ * Note: pixel values are not clamped to the scale area.
+ * @private
+ */
+ calculateBarValuePixels: function(datasetIndex, index) {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var scale = me._getValueScale();
+ var isHorizontal = scale.isHorizontal();
+ var datasets = chart.data.datasets;
+ var value = +scale.getRightValue(datasets[datasetIndex].data[index]);
+ var minBarLength = scale.options.minBarLength;
+ var stacked = scale.options.stacked;
+ var stack = meta.stack;
+ var start = 0;
+ var i, imeta, ivalue, base, head, size;
+
+ if (stacked || (stacked === undefined && stack !== undefined)) {
+ for (i = 0; i < datasetIndex; ++i) {
+ imeta = chart.getDatasetMeta(i);
+
+ if (imeta.bar &&
+ imeta.stack === stack &&
+ imeta.controller._getValueScaleId() === scale.id &&
+ chart.isDatasetVisible(i)) {
+
+ ivalue = +scale.getRightValue(datasets[i].data[index]);
+ if ((value < 0 && ivalue < 0) || (value >= 0 && ivalue > 0)) {
+ start += ivalue;
+ }
+ }
+ }
+ }
+
+ base = scale.getPixelForValue(start);
+ head = scale.getPixelForValue(start + value);
+ size = head - base;
+
+ if (minBarLength !== undefined && Math.abs(size) < minBarLength) {
+ size = minBarLength;
+ if (value >= 0 && !isHorizontal || value < 0 && isHorizontal) {
+ head = base - minBarLength;
+ } else {
+ head = base + minBarLength;
+ }
+ }
+
+ return {
+ size: size,
+ base: base,
+ head: head,
+ center: head + size / 2
+ };
+ },
+
+ /**
+ * @private
+ */
+ calculateBarIndexPixels: function(datasetIndex, index, ruler) {
+ var me = this;
+ var options = ruler.scale.options;
+ var range = options.barThickness === 'flex'
+ ? computeFlexCategoryTraits(index, ruler, options)
+ : computeFitCategoryTraits(index, ruler, options);
+
+ var stackIndex = me.getStackIndex(datasetIndex, me.getMeta().stack);
+ var center = range.start + (range.chunk * stackIndex) + (range.chunk / 2);
+ var size = Math.min(
+ helpers$1.valueOrDefault(options.maxBarThickness, Infinity),
+ range.chunk * range.ratio);
+
+ return {
+ base: center - size / 2,
+ head: center + size / 2,
+ center: center,
+ size: size
+ };
+ },
+
+ draw: function() {
+ var me = this;
+ var chart = me.chart;
+ var scale = me._getValueScale();
+ var rects = me.getMeta().data;
+ var dataset = me.getDataset();
+ var ilen = rects.length;
+ var i = 0;
+
+ helpers$1.canvas.clipArea(chart.ctx, chart.chartArea);
+
+ for (; i < ilen; ++i) {
+ if (!isNaN(scale.getRightValue(dataset.data[i]))) {
+ rects[i].draw();
+ }
+ }
+
+ helpers$1.canvas.unclipArea(chart.ctx);
+ },
+
+ /**
+ * @private
+ */
+ _resolveElementOptions: function(rectangle, index) {
+ var me = this;
+ var chart = me.chart;
+ var datasets = chart.data.datasets;
+ var dataset = datasets[me.index];
+ var custom = rectangle.custom || {};
+ var options = chart.options.elements.rectangle;
+ var values = {};
+ var i, ilen, key;
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ var keys = [
+ 'backgroundColor',
+ 'borderColor',
+ 'borderSkipped',
+ 'borderWidth'
+ ];
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$1([
+ custom[key],
+ dataset[key],
+ options[key]
+ ], context, index);
+ }
+
+ return values;
+ }
+});
+
+var valueOrDefault$3 = helpers$1.valueOrDefault;
+var resolve$2 = helpers$1.options.resolve;
+
+core_defaults._set('bubble', {
+ hover: {
+ mode: 'single'
+ },
+
+ scales: {
+ xAxes: [{
+ type: 'linear', // bubble should probably use a linear scale by default
+ position: 'bottom',
+ id: 'x-axis-0' // need an ID so datasets can reference the scale
+ }],
+ yAxes: [{
+ type: 'linear',
+ position: 'left',
+ id: 'y-axis-0'
+ }]
+ },
+
+ tooltips: {
+ callbacks: {
+ title: function() {
+ // Title doesn't make sense for scatter since we format the data as a point
+ return '';
+ },
+ label: function(item, data) {
+ var datasetLabel = data.datasets[item.datasetIndex].label || '';
+ var dataPoint = data.datasets[item.datasetIndex].data[item.index];
+ return datasetLabel + ': (' + item.xLabel + ', ' + item.yLabel + ', ' + dataPoint.r + ')';
+ }
+ }
+ }
+});
+
+var controller_bubble = core_datasetController.extend({
+ /**
+ * @protected
+ */
+ dataElementType: elements.Point,
+
+ /**
+ * @protected
+ */
+ update: function(reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var points = meta.data;
+
+ // Update Points
+ helpers$1.each(points, function(point, index) {
+ me.updateElement(point, index, reset);
+ });
+ },
+
+ /**
+ * @protected
+ */
+ updateElement: function(point, index, reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var custom = point.custom || {};
+ var xScale = me.getScaleForId(meta.xAxisID);
+ var yScale = me.getScaleForId(meta.yAxisID);
+ var options = me._resolveElementOptions(point, index);
+ var data = me.getDataset().data[index];
+ var dsIndex = me.index;
+
+ var x = reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex);
+ var y = reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex);
+
+ point._xScale = xScale;
+ point._yScale = yScale;
+ point._options = options;
+ point._datasetIndex = dsIndex;
+ point._index = index;
+ point._model = {
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ hitRadius: options.hitRadius,
+ pointStyle: options.pointStyle,
+ rotation: options.rotation,
+ radius: reset ? 0 : options.radius,
+ skip: custom.skip || isNaN(x) || isNaN(y),
+ x: x,
+ y: y,
+ };
+
+ point.pivot();
+ },
+
+ /**
+ * @protected
+ */
+ setHoverStyle: function(point) {
+ var model = point._model;
+ var options = point._options;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ point.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ radius: model.radius
+ };
+
+ model.backgroundColor = valueOrDefault$3(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault$3(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault$3(options.hoverBorderWidth, options.borderWidth);
+ model.radius = options.radius + options.hoverRadius;
+ },
+
+ /**
+ * @private
+ */
+ _resolveElementOptions: function(point, index) {
+ var me = this;
+ var chart = me.chart;
+ var datasets = chart.data.datasets;
+ var dataset = datasets[me.index];
+ var custom = point.custom || {};
+ var options = chart.options.elements.point;
+ var data = dataset.data[index];
+ var values = {};
+ var i, ilen, key;
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ var keys = [
+ 'backgroundColor',
+ 'borderColor',
+ 'borderWidth',
+ 'hoverBackgroundColor',
+ 'hoverBorderColor',
+ 'hoverBorderWidth',
+ 'hoverRadius',
+ 'hitRadius',
+ 'pointStyle',
+ 'rotation'
+ ];
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$2([
+ custom[key],
+ dataset[key],
+ options[key]
+ ], context, index);
+ }
+
+ // Custom radius resolution
+ values.radius = resolve$2([
+ custom.radius,
+ data ? data.r : undefined,
+ dataset.radius,
+ options.radius
+ ], context, index);
+
+ return values;
+ }
+});
+
+var resolve$3 = helpers$1.options.resolve;
+var valueOrDefault$4 = helpers$1.valueOrDefault;
+
+core_defaults._set('doughnut', {
+ animation: {
+ // Boolean - Whether we animate the rotation of the Doughnut
+ animateRotate: true,
+ // Boolean - Whether we animate scaling the Doughnut from the centre
+ animateScale: false
+ },
+ hover: {
+ mode: 'single'
+ },
+ legendCallback: function(chart) {
+ var text = [];
+ text.push('<ul class="' + chart.id + '-legend">');
+
+ var data = chart.data;
+ var datasets = data.datasets;
+ var labels = data.labels;
+
+ if (datasets.length) {
+ for (var i = 0; i < datasets[0].data.length; ++i) {
+ text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
+ if (labels[i]) {
+ text.push(labels[i]);
+ }
+ text.push('</li>');
+ }
+ }
+
+ text.push('</ul>');
+ return text.join('');
+ },
+ legend: {
+ labels: {
+ generateLabels: function(chart) {
+ var data = chart.data;
+ if (data.labels.length && data.datasets.length) {
+ return data.labels.map(function(label, i) {
+ var meta = chart.getDatasetMeta(0);
+ var ds = data.datasets[0];
+ var arc = meta.data[i];
+ var custom = arc && arc.custom || {};
+ var arcOpts = chart.options.elements.arc;
+ var fill = resolve$3([custom.backgroundColor, ds.backgroundColor, arcOpts.backgroundColor], undefined, i);
+ var stroke = resolve$3([custom.borderColor, ds.borderColor, arcOpts.borderColor], undefined, i);
+ var bw = resolve$3([custom.borderWidth, ds.borderWidth, arcOpts.borderWidth], undefined, i);
+
+ return {
+ text: label,
+ fillStyle: fill,
+ strokeStyle: stroke,
+ lineWidth: bw,
+ hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
+
+ // Extra data used for toggling the correct item
+ index: i
+ };
+ });
+ }
+ return [];
+ }
+ },
+
+ onClick: function(e, legendItem) {
+ var index = legendItem.index;
+ var chart = this.chart;
+ var i, ilen, meta;
+
+ for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
+ meta = chart.getDatasetMeta(i);
+ // toggle visibility of index if exists
+ if (meta.data[index]) {
+ meta.data[index].hidden = !meta.data[index].hidden;
+ }
+ }
+
+ chart.update();
+ }
+ },
+
+ // The percentage of the chart that we cut out of the middle.
+ cutoutPercentage: 50,
+
+ // The rotation of the chart, where the first data arc begins.
+ rotation: Math.PI * -0.5,
+
+ // The total circumference of the chart.
+ circumference: Math.PI * 2.0,
+
+ // Need to override these to give a nice default
+ tooltips: {
+ callbacks: {
+ title: function() {
+ return '';
+ },
+ label: function(tooltipItem, data) {
+ var dataLabel = data.labels[tooltipItem.index];
+ var value = ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
+
+ if (helpers$1.isArray(dataLabel)) {
+ // show value on first line of multiline label
+ // need to clone because we are changing the value
+ dataLabel = dataLabel.slice();
+ dataLabel[0] += value;
+ } else {
+ dataLabel += value;
+ }
+
+ return dataLabel;
+ }
+ }
+ }
+});
+
+var controller_doughnut = core_datasetController.extend({
+
+ dataElementType: elements.Arc,
+
+ linkScales: helpers$1.noop,
+
+ // Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly
+ getRingIndex: function(datasetIndex) {
+ var ringIndex = 0;
+
+ for (var j = 0; j < datasetIndex; ++j) {
+ if (this.chart.isDatasetVisible(j)) {
+ ++ringIndex;
+ }
+ }
+
+ return ringIndex;
+ },
+
+ update: function(reset) {
+ var me = this;
+ var chart = me.chart;
+ var chartArea = chart.chartArea;
+ var opts = chart.options;
+ var availableWidth = chartArea.right - chartArea.left;
+ var availableHeight = chartArea.bottom - chartArea.top;
+ var minSize = Math.min(availableWidth, availableHeight);
+ var offset = {x: 0, y: 0};
+ var meta = me.getMeta();
+ var arcs = meta.data;
+ var cutoutPercentage = opts.cutoutPercentage;
+ var circumference = opts.circumference;
+ var chartWeight = me._getRingWeight(me.index);
+ var i, ilen;
+
+ // If the chart's circumference isn't a full circle, calculate minSize as a ratio of the width/height of the arc
+ if (circumference < Math.PI * 2.0) {
+ var startAngle = opts.rotation % (Math.PI * 2.0);
+ startAngle += Math.PI * 2.0 * (startAngle >= Math.PI ? -1 : startAngle < -Math.PI ? 1 : 0);
+ var endAngle = startAngle + circumference;
+ var start = {x: Math.cos(startAngle), y: Math.sin(startAngle)};
+ var end = {x: Math.cos(endAngle), y: Math.sin(endAngle)};
+ var contains0 = (startAngle <= 0 && endAngle >= 0) || (startAngle <= Math.PI * 2.0 && Math.PI * 2.0 <= endAngle);
+ var contains90 = (startAngle <= Math.PI * 0.5 && Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 2.5 && Math.PI * 2.5 <= endAngle);
+ var contains180 = (startAngle <= -Math.PI && -Math.PI <= endAngle) || (startAngle <= Math.PI && Math.PI <= endAngle);
+ var contains270 = (startAngle <= -Math.PI * 0.5 && -Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 1.5 && Math.PI * 1.5 <= endAngle);
+ var cutout = cutoutPercentage / 100.0;
+ var min = {x: contains180 ? -1 : Math.min(start.x * (start.x < 0 ? 1 : cutout), end.x * (end.x < 0 ? 1 : cutout)), y: contains270 ? -1 : Math.min(start.y * (start.y < 0 ? 1 : cutout), end.y * (end.y < 0 ? 1 : cutout))};
+ var max = {x: contains0 ? 1 : Math.max(start.x * (start.x > 0 ? 1 : cutout), end.x * (end.x > 0 ? 1 : cutout)), y: contains90 ? 1 : Math.max(start.y * (start.y > 0 ? 1 : cutout), end.y * (end.y > 0 ? 1 : cutout))};
+ var size = {width: (max.x - min.x) * 0.5, height: (max.y - min.y) * 0.5};
+ minSize = Math.min(availableWidth / size.width, availableHeight / size.height);
+ offset = {x: (max.x + min.x) * -0.5, y: (max.y + min.y) * -0.5};
+ }
+
+ for (i = 0, ilen = arcs.length; i < ilen; ++i) {
+ arcs[i]._options = me._resolveElementOptions(arcs[i], i);
+ }
+
+ chart.borderWidth = me.getMaxBorderWidth();
+ chart.outerRadius = Math.max((minSize - chart.borderWidth) / 2, 0);
+ chart.innerRadius = Math.max(cutoutPercentage ? (chart.outerRadius / 100) * (cutoutPercentage) : 0, 0);
+ chart.radiusLength = (chart.outerRadius - chart.innerRadius) / (me._getVisibleDatasetWeightTotal() || 1);
+ chart.offsetX = offset.x * chart.outerRadius;
+ chart.offsetY = offset.y * chart.outerRadius;
+
+ meta.total = me.calculateTotal();
+
+ me.outerRadius = chart.outerRadius - chart.radiusLength * me._getRingWeightOffset(me.index);
+ me.innerRadius = Math.max(me.outerRadius - chart.radiusLength * chartWeight, 0);
+
+ for (i = 0, ilen = arcs.length; i < ilen; ++i) {
+ me.updateElement(arcs[i], i, reset);
+ }
+ },
+
+ updateElement: function(arc, index, reset) {
+ var me = this;
+ var chart = me.chart;
+ var chartArea = chart.chartArea;
+ var opts = chart.options;
+ var animationOpts = opts.animation;
+ var centerX = (chartArea.left + chartArea.right) / 2;
+ var centerY = (chartArea.top + chartArea.bottom) / 2;
+ var startAngle = opts.rotation; // non reset case handled later
+ var endAngle = opts.rotation; // non reset case handled later
+ var dataset = me.getDataset();
+ var circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / (2.0 * Math.PI));
+ var innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius;
+ var outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius;
+ var options = arc._options || {};
+
+ helpers$1.extend(arc, {
+ // Utility
+ _datasetIndex: me.index,
+ _index: index,
+
+ // Desired view properties
+ _model: {
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ borderAlign: options.borderAlign,
+ x: centerX + chart.offsetX,
+ y: centerY + chart.offsetY,
+ startAngle: startAngle,
+ endAngle: endAngle,
+ circumference: circumference,
+ outerRadius: outerRadius,
+ innerRadius: innerRadius,
+ label: helpers$1.valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index])
+ }
+ });
+
+ var model = arc._model;
+
+ // Set correct angles if not resetting
+ if (!reset || !animationOpts.animateRotate) {
+ if (index === 0) {
+ model.startAngle = opts.rotation;
+ } else {
+ model.startAngle = me.getMeta().data[index - 1]._model.endAngle;
+ }
+
+ model.endAngle = model.startAngle + model.circumference;
+ }
+
+ arc.pivot();
+ },
+
+ calculateTotal: function() {
+ var dataset = this.getDataset();
+ var meta = this.getMeta();
+ var total = 0;
+ var value;
+
+ helpers$1.each(meta.data, function(element, index) {
+ value = dataset.data[index];
+ if (!isNaN(value) && !element.hidden) {
+ total += Math.abs(value);
+ }
+ });
+
+ /* if (total === 0) {
+ total = NaN;
+ }*/
+
+ return total;
+ },
+
+ calculateCircumference: function(value) {
+ var total = this.getMeta().total;
+ if (total > 0 && !isNaN(value)) {
+ return (Math.PI * 2.0) * (Math.abs(value) / total);
+ }
+ return 0;
+ },
+
+ // gets the max border or hover width to properly scale pie charts
+ getMaxBorderWidth: function(arcs) {
+ var me = this;
+ var max = 0;
+ var chart = me.chart;
+ var i, ilen, meta, arc, controller, options, borderWidth, hoverWidth;
+
+ if (!arcs) {
+ // Find the outmost visible dataset
+ for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) {
+ if (chart.isDatasetVisible(i)) {
+ meta = chart.getDatasetMeta(i);
+ arcs = meta.data;
+ if (i !== me.index) {
+ controller = meta.controller;
+ }
+ break;
+ }
+ }
+ }
+
+ if (!arcs) {
+ return 0;
+ }
+
+ for (i = 0, ilen = arcs.length; i < ilen; ++i) {
+ arc = arcs[i];
+ options = controller ? controller._resolveElementOptions(arc, i) : arc._options;
+ if (options.borderAlign !== 'inner') {
+ borderWidth = options.borderWidth;
+ hoverWidth = options.hoverBorderWidth;
+
+ max = borderWidth > max ? borderWidth : max;
+ max = hoverWidth > max ? hoverWidth : max;
+ }
+ }
+ return max;
+ },
+
+ /**
+ * @protected
+ */
+ setHoverStyle: function(arc) {
+ var model = arc._model;
+ var options = arc._options;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ arc.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ };
+
+ model.backgroundColor = valueOrDefault$4(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault$4(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault$4(options.hoverBorderWidth, options.borderWidth);
+ },
+
+ /**
+ * @private
+ */
+ _resolveElementOptions: function(arc, index) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = me.getDataset();
+ var custom = arc.custom || {};
+ var options = chart.options.elements.arc;
+ var values = {};
+ var i, ilen, key;
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ var keys = [
+ 'backgroundColor',
+ 'borderColor',
+ 'borderWidth',
+ 'borderAlign',
+ 'hoverBackgroundColor',
+ 'hoverBorderColor',
+ 'hoverBorderWidth',
+ ];
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$3([
+ custom[key],
+ dataset[key],
+ options[key]
+ ], context, index);
+ }
+
+ return values;
+ },
+
+ /**
+ * Get radius length offset of the dataset in relation to the visible datasets weights. This allows determining the inner and outer radius correctly
+ * @private
+ */
+ _getRingWeightOffset: function(datasetIndex) {
+ var ringWeightOffset = 0;
+
+ for (var i = 0; i < datasetIndex; ++i) {
+ if (this.chart.isDatasetVisible(i)) {
+ ringWeightOffset += this._getRingWeight(i);
+ }
+ }
+
+ return ringWeightOffset;
+ },
+
+ /**
+ * @private
+ */
+ _getRingWeight: function(dataSetIndex) {
+ return Math.max(valueOrDefault$4(this.chart.data.datasets[dataSetIndex].weight, 1), 0);
+ },
+
+ /**
+ * Returns the sum of all visibile data set weights. This value can be 0.
+ * @private
+ */
+ _getVisibleDatasetWeightTotal: function() {
+ return this._getRingWeightOffset(this.chart.data.datasets.length);
+ }
+});
+
+core_defaults._set('horizontalBar', {
+ hover: {
+ mode: 'index',
+ axis: 'y'
+ },
+
+ scales: {
+ xAxes: [{
+ type: 'linear',
+ position: 'bottom'
+ }],
+
+ yAxes: [{
+ type: 'category',
+ position: 'left',
+ categoryPercentage: 0.8,
+ barPercentage: 0.9,
+ offset: true,
+ gridLines: {
+ offsetGridLines: true
+ }
+ }]
+ },
+
+ elements: {
+ rectangle: {
+ borderSkipped: 'left'
+ }
+ },
+
+ tooltips: {
+ mode: 'index',
+ axis: 'y'
+ }
+});
+
+var controller_horizontalBar = controller_bar.extend({
+ /**
+ * @private
+ */
+ _getValueScaleId: function() {
+ return this.getMeta().xAxisID;
+ },
+
+ /**
+ * @private
+ */
+ _getIndexScaleId: function() {
+ return this.getMeta().yAxisID;
+ }
+});
+
+var valueOrDefault$5 = helpers$1.valueOrDefault;
+var resolve$4 = helpers$1.options.resolve;
+var isPointInArea = helpers$1.canvas._isPointInArea;
+
+core_defaults._set('line', {
+ showLines: true,
+ spanGaps: false,
+
+ hover: {
+ mode: 'label'
+ },
+
+ scales: {
+ xAxes: [{
+ type: 'category',
+ id: 'x-axis-0'
+ }],
+ yAxes: [{
+ type: 'linear',
+ id: 'y-axis-0'
+ }]
+ }
+});
+
+function lineEnabled(dataset, options) {
+ return valueOrDefault$5(dataset.showLine, options.showLines);
+}
+
+var controller_line = core_datasetController.extend({
+
+ datasetElementType: elements.Line,
+
+ dataElementType: elements.Point,
+
+ update: function(reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var line = meta.dataset;
+ var points = meta.data || [];
+ var scale = me.getScaleForId(meta.yAxisID);
+ var dataset = me.getDataset();
+ var showLine = lineEnabled(dataset, me.chart.options);
+ var i, ilen;
+
+ // Update Line
+ if (showLine) {
+ // Compatibility: If the properties are defined with only the old name, use those values
+ if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
+ dataset.lineTension = dataset.tension;
+ }
+
+ // Utility
+ line._scale = scale;
+ line._datasetIndex = me.index;
+ // Data
+ line._children = points;
+ // Model
+ line._model = me._resolveLineOptions(line);
+
+ line.pivot();
+ }
+
+ // Update Points
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ me.updateElement(points[i], i, reset);
+ }
+
+ if (showLine && line._model.tension !== 0) {
+ me.updateBezierControlPoints();
+ }
+
+ // Now pivot the point for animation
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ points[i].pivot();
+ }
+ },
+
+ updateElement: function(point, index, reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var custom = point.custom || {};
+ var dataset = me.getDataset();
+ var datasetIndex = me.index;
+ var value = dataset.data[index];
+ var yScale = me.getScaleForId(meta.yAxisID);
+ var xScale = me.getScaleForId(meta.xAxisID);
+ var lineModel = meta.dataset._model;
+ var x, y;
+
+ var options = me._resolvePointOptions(point, index);
+
+ x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex);
+ y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex);
+
+ // Utility
+ point._xScale = xScale;
+ point._yScale = yScale;
+ point._options = options;
+ point._datasetIndex = datasetIndex;
+ point._index = index;
+
+ // Desired view properties
+ point._model = {
+ x: x,
+ y: y,
+ skip: custom.skip || isNaN(x) || isNaN(y),
+ // Appearance
+ radius: options.radius,
+ pointStyle: options.pointStyle,
+ rotation: options.rotation,
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ tension: valueOrDefault$5(custom.tension, lineModel ? lineModel.tension : 0),
+ steppedLine: lineModel ? lineModel.steppedLine : false,
+ // Tooltip
+ hitRadius: options.hitRadius
+ };
+ },
+
+ /**
+ * @private
+ */
+ _resolvePointOptions: function(element, index) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = chart.data.datasets[me.index];
+ var custom = element.custom || {};
+ var options = chart.options.elements.point;
+ var values = {};
+ var i, ilen, key;
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ var ELEMENT_OPTIONS = {
+ backgroundColor: 'pointBackgroundColor',
+ borderColor: 'pointBorderColor',
+ borderWidth: 'pointBorderWidth',
+ hitRadius: 'pointHitRadius',
+ hoverBackgroundColor: 'pointHoverBackgroundColor',
+ hoverBorderColor: 'pointHoverBorderColor',
+ hoverBorderWidth: 'pointHoverBorderWidth',
+ hoverRadius: 'pointHoverRadius',
+ pointStyle: 'pointStyle',
+ radius: 'pointRadius',
+ rotation: 'pointRotation'
+ };
+ var keys = Object.keys(ELEMENT_OPTIONS);
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$4([
+ custom[key],
+ dataset[ELEMENT_OPTIONS[key]],
+ dataset[key],
+ options[key]
+ ], context, index);
+ }
+
+ return values;
+ },
+
+ /**
+ * @private
+ */
+ _resolveLineOptions: function(element) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = chart.data.datasets[me.index];
+ var custom = element.custom || {};
+ var options = chart.options;
+ var elementOptions = options.elements.line;
+ var values = {};
+ var i, ilen, key;
+
+ var keys = [
+ 'backgroundColor',
+ 'borderWidth',
+ 'borderColor',
+ 'borderCapStyle',
+ 'borderDash',
+ 'borderDashOffset',
+ 'borderJoinStyle',
+ 'fill',
+ 'cubicInterpolationMode'
+ ];
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$4([
+ custom[key],
+ dataset[key],
+ elementOptions[key]
+ ]);
+ }
+
+ // The default behavior of lines is to break at null values, according
+ // to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158
+ // This option gives lines the ability to span gaps
+ values.spanGaps = valueOrDefault$5(dataset.spanGaps, options.spanGaps);
+ values.tension = valueOrDefault$5(dataset.lineTension, elementOptions.tension);
+ values.steppedLine = resolve$4([custom.steppedLine, dataset.steppedLine, elementOptions.stepped]);
+
+ return values;
+ },
+
+ calculatePointY: function(value, index, datasetIndex) {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var yScale = me.getScaleForId(meta.yAxisID);
+ var sumPos = 0;
+ var sumNeg = 0;
+ var i, ds, dsMeta;
+
+ if (yScale.options.stacked) {
+ for (i = 0; i < datasetIndex; i++) {
+ ds = chart.data.datasets[i];
+ dsMeta = chart.getDatasetMeta(i);
+ if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id && chart.isDatasetVisible(i)) {
+ var stackedRightValue = Number(yScale.getRightValue(ds.data[index]));
+ if (stackedRightValue < 0) {
+ sumNeg += stackedRightValue || 0;
+ } else {
+ sumPos += stackedRightValue || 0;
+ }
+ }
+ }
+
+ var rightValue = Number(yScale.getRightValue(value));
+ if (rightValue < 0) {
+ return yScale.getPixelForValue(sumNeg + rightValue);
+ }
+ return yScale.getPixelForValue(sumPos + rightValue);
+ }
+
+ return yScale.getPixelForValue(value);
+ },
+
+ updateBezierControlPoints: function() {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var lineModel = meta.dataset._model;
+ var area = chart.chartArea;
+ var points = meta.data || [];
+ var i, ilen, model, controlPoints;
+
+ // Only consider points that are drawn in case the spanGaps option is used
+ if (lineModel.spanGaps) {
+ points = points.filter(function(pt) {
+ return !pt._model.skip;
+ });
+ }
+
+ function capControlPoint(pt, min, max) {
+ return Math.max(Math.min(pt, max), min);
+ }
+
+ if (lineModel.cubicInterpolationMode === 'monotone') {
+ helpers$1.splineCurveMonotone(points);
+ } else {
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ model = points[i]._model;
+ controlPoints = helpers$1.splineCurve(
+ helpers$1.previousItem(points, i)._model,
+ model,
+ helpers$1.nextItem(points, i)._model,
+ lineModel.tension
+ );
+ model.controlPointPreviousX = controlPoints.previous.x;
+ model.controlPointPreviousY = controlPoints.previous.y;
+ model.controlPointNextX = controlPoints.next.x;
+ model.controlPointNextY = controlPoints.next.y;
+ }
+ }
+
+ if (chart.options.elements.line.capBezierPoints) {
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ model = points[i]._model;
+ if (isPointInArea(model, area)) {
+ if (i > 0 && isPointInArea(points[i - 1]._model, area)) {
+ model.controlPointPreviousX = capControlPoint(model.controlPointPreviousX, area.left, area.right);
+ model.controlPointPreviousY = capControlPoint(model.controlPointPreviousY, area.top, area.bottom);
+ }
+ if (i < points.length - 1 && isPointInArea(points[i + 1]._model, area)) {
+ model.controlPointNextX = capControlPoint(model.controlPointNextX, area.left, area.right);
+ model.controlPointNextY = capControlPoint(model.controlPointNextY, area.top, area.bottom);
+ }
+ }
+ }
+ }
+ },
+
+ draw: function() {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var points = meta.data || [];
+ var area = chart.chartArea;
+ var ilen = points.length;
+ var halfBorderWidth;
+ var i = 0;
+
+ if (lineEnabled(me.getDataset(), chart.options)) {
+ halfBorderWidth = (meta.dataset._model.borderWidth || 0) / 2;
+
+ helpers$1.canvas.clipArea(chart.ctx, {
+ left: area.left,
+ right: area.right,
+ top: area.top - halfBorderWidth,
+ bottom: area.bottom + halfBorderWidth
+ });
+
+ meta.dataset.draw();
+
+ helpers$1.canvas.unclipArea(chart.ctx);
+ }
+
+ // Draw the points
+ for (; i < ilen; ++i) {
+ points[i].draw(area);
+ }
+ },
+
+ /**
+ * @protected
+ */
+ setHoverStyle: function(point) {
+ var model = point._model;
+ var options = point._options;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ point.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ radius: model.radius
+ };
+
+ model.backgroundColor = valueOrDefault$5(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault$5(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault$5(options.hoverBorderWidth, options.borderWidth);
+ model.radius = valueOrDefault$5(options.hoverRadius, options.radius);
+ },
+});
+
+var resolve$5 = helpers$1.options.resolve;
+
+core_defaults._set('polarArea', {
+ scale: {
+ type: 'radialLinear',
+ angleLines: {
+ display: false
+ },
+ gridLines: {
+ circular: true
+ },
+ pointLabels: {
+ display: false
+ },
+ ticks: {
+ beginAtZero: true
+ }
+ },
+
+ // Boolean - Whether to animate the rotation of the chart
+ animation: {
+ animateRotate: true,
+ animateScale: true
+ },
+
+ startAngle: -0.5 * Math.PI,
+ legendCallback: function(chart) {
+ var text = [];
+ text.push('<ul class="' + chart.id + '-legend">');
+
+ var data = chart.data;
+ var datasets = data.datasets;
+ var labels = data.labels;
+
+ if (datasets.length) {
+ for (var i = 0; i < datasets[0].data.length; ++i) {
+ text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
+ if (labels[i]) {
+ text.push(labels[i]);
+ }
+ text.push('</li>');
+ }
+ }
+
+ text.push('</ul>');
+ return text.join('');
+ },
+ legend: {
+ labels: {
+ generateLabels: function(chart) {
+ var data = chart.data;
+ if (data.labels.length && data.datasets.length) {
+ return data.labels.map(function(label, i) {
+ var meta = chart.getDatasetMeta(0);
+ var ds = data.datasets[0];
+ var arc = meta.data[i];
+ var custom = arc.custom || {};
+ var arcOpts = chart.options.elements.arc;
+ var fill = resolve$5([custom.backgroundColor, ds.backgroundColor, arcOpts.backgroundColor], undefined, i);
+ var stroke = resolve$5([custom.borderColor, ds.borderColor, arcOpts.borderColor], undefined, i);
+ var bw = resolve$5([custom.borderWidth, ds.borderWidth, arcOpts.borderWidth], undefined, i);
+
+ return {
+ text: label,
+ fillStyle: fill,
+ strokeStyle: stroke,
+ lineWidth: bw,
+ hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
+
+ // Extra data used for toggling the correct item
+ index: i
+ };
+ });
+ }
+ return [];
+ }
+ },
+
+ onClick: function(e, legendItem) {
+ var index = legendItem.index;
+ var chart = this.chart;
+ var i, ilen, meta;
+
+ for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
+ meta = chart.getDatasetMeta(i);
+ meta.data[index].hidden = !meta.data[index].hidden;
+ }
+
+ chart.update();
+ }
+ },
+
+ // Need to override these to give a nice default
+ tooltips: {
+ callbacks: {
+ title: function() {
+ return '';
+ },
+ label: function(item, data) {
+ return data.labels[item.index] + ': ' + item.yLabel;
+ }
+ }
+ }
+});
+
+var controller_polarArea = core_datasetController.extend({
+
+ dataElementType: elements.Arc,
+
+ linkScales: helpers$1.noop,
+
+ update: function(reset) {
+ var me = this;
+ var dataset = me.getDataset();
+ var meta = me.getMeta();
+ var start = me.chart.options.startAngle || 0;
+ var starts = me._starts = [];
+ var angles = me._angles = [];
+ var arcs = meta.data;
+ var i, ilen, angle;
+
+ me._updateRadius();
+
+ meta.count = me.countVisibleElements();
+
+ for (i = 0, ilen = dataset.data.length; i < ilen; i++) {
+ starts[i] = start;
+ angle = me._computeAngle(i);
+ angles[i] = angle;
+ start += angle;
+ }
+
+ for (i = 0, ilen = arcs.length; i < ilen; ++i) {
+ arcs[i]._options = me._resolveElementOptions(arcs[i], i);
+ me.updateElement(arcs[i], i, reset);
+ }
+ },
+
+ /**
+ * @private
+ */
+ _updateRadius: function() {
+ var me = this;
+ var chart = me.chart;
+ var chartArea = chart.chartArea;
+ var opts = chart.options;
+ var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);
+
+ chart.outerRadius = Math.max(minSize / 2, 0);
+ chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0);
+ chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
+
+ me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index);
+ me.innerRadius = me.outerRadius - chart.radiusLength;
+ },
+
+ updateElement: function(arc, index, reset) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = me.getDataset();
+ var opts = chart.options;
+ var animationOpts = opts.animation;
+ var scale = chart.scale;
+ var labels = chart.data.labels;
+
+ var centerX = scale.xCenter;
+ var centerY = scale.yCenter;
+
+ // var negHalfPI = -0.5 * Math.PI;
+ var datasetStartAngle = opts.startAngle;
+ var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
+ var startAngle = me._starts[index];
+ var endAngle = startAngle + (arc.hidden ? 0 : me._angles[index]);
+
+ var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
+ var options = arc._options || {};
+
+ helpers$1.extend(arc, {
+ // Utility
+ _datasetIndex: me.index,
+ _index: index,
+ _scale: scale,
+
+ // Desired view properties
+ _model: {
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ borderAlign: options.borderAlign,
+ x: centerX,
+ y: centerY,
+ innerRadius: 0,
+ outerRadius: reset ? resetRadius : distance,
+ startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle,
+ endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle,
+ label: helpers$1.valueAtIndexOrDefault(labels, index, labels[index])
+ }
+ });
+
+ arc.pivot();
+ },
+
+ countVisibleElements: function() {
+ var dataset = this.getDataset();
+ var meta = this.getMeta();
+ var count = 0;
+
+ helpers$1.each(meta.data, function(element, index) {
+ if (!isNaN(dataset.data[index]) && !element.hidden) {
+ count++;
+ }
+ });
+
+ return count;
+ },
+
+ /**
+ * @protected
+ */
+ setHoverStyle: function(arc) {
+ var model = arc._model;
+ var options = arc._options;
+ var getHoverColor = helpers$1.getHoverColor;
+ var valueOrDefault = helpers$1.valueOrDefault;
+
+ arc.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ };
+
+ model.backgroundColor = valueOrDefault(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault(options.hoverBorderWidth, options.borderWidth);
+ },
+
+ /**
+ * @private
+ */
+ _resolveElementOptions: function(arc, index) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = me.getDataset();
+ var custom = arc.custom || {};
+ var options = chart.options.elements.arc;
+ var values = {};
+ var i, ilen, key;
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ var keys = [
+ 'backgroundColor',
+ 'borderColor',
+ 'borderWidth',
+ 'borderAlign',
+ 'hoverBackgroundColor',
+ 'hoverBorderColor',
+ 'hoverBorderWidth',
+ ];
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$5([
+ custom[key],
+ dataset[key],
+ options[key]
+ ], context, index);
+ }
+
+ return values;
+ },
+
+ /**
+ * @private
+ */
+ _computeAngle: function(index) {
+ var me = this;
+ var count = this.getMeta().count;
+ var dataset = me.getDataset();
+ var meta = me.getMeta();
+
+ if (isNaN(dataset.data[index]) || meta.data[index].hidden) {
+ return 0;
+ }
+
+ // Scriptable options
+ var context = {
+ chart: me.chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ return resolve$5([
+ me.chart.options.elements.arc.angle,
+ (2 * Math.PI) / count
+ ], context, index);
+ }
+});
+
+core_defaults._set('pie', helpers$1.clone(core_defaults.doughnut));
+core_defaults._set('pie', {
+ cutoutPercentage: 0
+});
+
+// Pie charts are Doughnut chart with different defaults
+var controller_pie = controller_doughnut;
+
+var valueOrDefault$6 = helpers$1.valueOrDefault;
+var resolve$6 = helpers$1.options.resolve;
+
+core_defaults._set('radar', {
+ scale: {
+ type: 'radialLinear'
+ },
+ elements: {
+ line: {
+ tension: 0 // no bezier in radar
+ }
+ }
+});
+
+var controller_radar = core_datasetController.extend({
+
+ datasetElementType: elements.Line,
+
+ dataElementType: elements.Point,
+
+ linkScales: helpers$1.noop,
+
+ update: function(reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var line = meta.dataset;
+ var points = meta.data || [];
+ var scale = me.chart.scale;
+ var dataset = me.getDataset();
+ var i, ilen;
+
+ // Compatibility: If the properties are defined with only the old name, use those values
+ if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
+ dataset.lineTension = dataset.tension;
+ }
+
+ // Utility
+ line._scale = scale;
+ line._datasetIndex = me.index;
+ // Data
+ line._children = points;
+ line._loop = true;
+ // Model
+ line._model = me._resolveLineOptions(line);
+
+ line.pivot();
+
+ // Update Points
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ me.updateElement(points[i], i, reset);
+ }
+
+ // Update bezier control points
+ me.updateBezierControlPoints();
+
+ // Now pivot the point for animation
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ points[i].pivot();
+ }
+ },
+
+ updateElement: function(point, index, reset) {
+ var me = this;
+ var custom = point.custom || {};
+ var dataset = me.getDataset();
+ var scale = me.chart.scale;
+ var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]);
+ var options = me._resolvePointOptions(point, index);
+ var lineModel = me.getMeta().dataset._model;
+ var x = reset ? scale.xCenter : pointPosition.x;
+ var y = reset ? scale.yCenter : pointPosition.y;
+
+ // Utility
+ point._scale = scale;
+ point._options = options;
+ point._datasetIndex = me.index;
+ point._index = index;
+
+ // Desired view properties
+ point._model = {
+ x: x, // value not used in dataset scale, but we want a consistent API between scales
+ y: y,
+ skip: custom.skip || isNaN(x) || isNaN(y),
+ // Appearance
+ radius: options.radius,
+ pointStyle: options.pointStyle,
+ rotation: options.rotation,
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ tension: valueOrDefault$6(custom.tension, lineModel ? lineModel.tension : 0),
+
+ // Tooltip
+ hitRadius: options.hitRadius
+ };
+ },
+
+ /**
+ * @private
+ */
+ _resolvePointOptions: function(element, index) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = chart.data.datasets[me.index];
+ var custom = element.custom || {};
+ var options = chart.options.elements.point;
+ var values = {};
+ var i, ilen, key;
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ var ELEMENT_OPTIONS = {
+ backgroundColor: 'pointBackgroundColor',
+ borderColor: 'pointBorderColor',
+ borderWidth: 'pointBorderWidth',
+ hitRadius: 'pointHitRadius',
+ hoverBackgroundColor: 'pointHoverBackgroundColor',
+ hoverBorderColor: 'pointHoverBorderColor',
+ hoverBorderWidth: 'pointHoverBorderWidth',
+ hoverRadius: 'pointHoverRadius',
+ pointStyle: 'pointStyle',
+ radius: 'pointRadius',
+ rotation: 'pointRotation'
+ };
+ var keys = Object.keys(ELEMENT_OPTIONS);
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$6([
+ custom[key],
+ dataset[ELEMENT_OPTIONS[key]],
+ dataset[key],
+ options[key]
+ ], context, index);
+ }
+
+ return values;
+ },
+
+ /**
+ * @private
+ */
+ _resolveLineOptions: function(element) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = chart.data.datasets[me.index];
+ var custom = element.custom || {};
+ var options = chart.options.elements.line;
+ var values = {};
+ var i, ilen, key;
+
+ var keys = [
+ 'backgroundColor',
+ 'borderWidth',
+ 'borderColor',
+ 'borderCapStyle',
+ 'borderDash',
+ 'borderDashOffset',
+ 'borderJoinStyle',
+ 'fill'
+ ];
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve$6([
+ custom[key],
+ dataset[key],
+ options[key]
+ ]);
+ }
+
+ values.tension = valueOrDefault$6(dataset.lineTension, options.tension);
+
+ return values;
+ },
+
+ updateBezierControlPoints: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var area = me.chart.chartArea;
+ var points = meta.data || [];
+ var i, ilen, model, controlPoints;
+
+ function capControlPoint(pt, min, max) {
+ return Math.max(Math.min(pt, max), min);
+ }
+
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ model = points[i]._model;
+ controlPoints = helpers$1.splineCurve(
+ helpers$1.previousItem(points, i, true)._model,
+ model,
+ helpers$1.nextItem(points, i, true)._model,
+ model.tension
+ );
+
+ // Prevent the bezier going outside of the bounds of the graph
+ model.controlPointPreviousX = capControlPoint(controlPoints.previous.x, area.left, area.right);
+ model.controlPointPreviousY = capControlPoint(controlPoints.previous.y, area.top, area.bottom);
+ model.controlPointNextX = capControlPoint(controlPoints.next.x, area.left, area.right);
+ model.controlPointNextY = capControlPoint(controlPoints.next.y, area.top, area.bottom);
+ }
+ },
+
+ setHoverStyle: function(point) {
+ var model = point._model;
+ var options = point._options;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ point.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ radius: model.radius
+ };
+
+ model.backgroundColor = valueOrDefault$6(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault$6(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault$6(options.hoverBorderWidth, options.borderWidth);
+ model.radius = valueOrDefault$6(options.hoverRadius, options.radius);
+ }
+});
+
+core_defaults._set('scatter', {
+ hover: {
+ mode: 'single'
+ },
+
+ scales: {
+ xAxes: [{
+ id: 'x-axis-1', // need an ID so datasets can reference the scale
+ type: 'linear', // scatter should not use a category axis
+ position: 'bottom'
+ }],
+ yAxes: [{
+ id: 'y-axis-1',
+ type: 'linear',
+ position: 'left'
+ }]
+ },
+
+ showLines: false,
+
+ tooltips: {
+ callbacks: {
+ title: function() {
+ return ''; // doesn't make sense for scatter since data are formatted as a point
+ },
+ label: function(item) {
+ return '(' + item.xLabel + ', ' + item.yLabel + ')';
+ }
+ }
+ }
+});
+
+// Scatter charts use line controllers
+var controller_scatter = controller_line;
+
+// NOTE export a map in which the key represents the controller type, not
+// the class, and so must be CamelCase in order to be correctly retrieved
+// by the controller in core.controller.js (`controllers[meta.type]`).
+
+var controllers = {
+ bar: controller_bar,
+ bubble: controller_bubble,
+ doughnut: controller_doughnut,
+ horizontalBar: controller_horizontalBar,
+ line: controller_line,
+ polarArea: controller_polarArea,
+ pie: controller_pie,
+ radar: controller_radar,
+ scatter: controller_scatter
+};
+
+/**
+ * Helper function to get relative position for an event
+ * @param {Event|IEvent} event - The event to get the position for
+ * @param {Chart} chart - The chart
+ * @returns {object} the event position
+ */
+function getRelativePosition(e, chart) {
+ if (e.native) {
+ return {
+ x: e.x,
+ y: e.y
+ };
+ }
+
+ return helpers$1.getRelativePosition(e, chart);
+}
+
+/**
+ * Helper function to traverse all of the visible elements in the chart
+ * @param {Chart} chart - the chart
+ * @param {function} handler - the callback to execute for each visible item
+ */
+function parseVisibleItems(chart, handler) {
+ var datasets = chart.data.datasets;
+ var meta, i, j, ilen, jlen;
+
+ for (i = 0, ilen = datasets.length; i < ilen; ++i) {
+ if (!chart.isDatasetVisible(i)) {
+ continue;
+ }
+
+ meta = chart.getDatasetMeta(i);
+ for (j = 0, jlen = meta.data.length; j < jlen; ++j) {
+ var element = meta.data[j];
+ if (!element._view.skip) {
+ handler(element);
+ }
+ }
+ }
+}
+
+/**
+ * Helper function to get the items that intersect the event position
+ * @param {ChartElement[]} items - elements to filter
+ * @param {object} position - the point to be nearest to
+ * @return {ChartElement[]} the nearest items
+ */
+function getIntersectItems(chart, position) {
+ var elements = [];
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inRange(position.x, position.y)) {
+ elements.push(element);
+ }
+ });
+
+ return elements;
+}
+
+/**
+ * Helper function to get the items nearest to the event position considering all visible items in teh chart
+ * @param {Chart} chart - the chart to look at elements from
+ * @param {object} position - the point to be nearest to
+ * @param {boolean} intersect - if true, only consider items that intersect the position
+ * @param {function} distanceMetric - function to provide the distance between points
+ * @return {ChartElement[]} the nearest items
+ */
+function getNearestItems(chart, position, intersect, distanceMetric) {
+ var minDistance = Number.POSITIVE_INFINITY;
+ var nearestItems = [];
+
+ parseVisibleItems(chart, function(element) {
+ if (intersect && !element.inRange(position.x, position.y)) {
+ return;
+ }
+
+ var center = element.getCenterPoint();
+ var distance = distanceMetric(position, center);
+ if (distance < minDistance) {
+ nearestItems = [element];
+ minDistance = distance;
+ } else if (distance === minDistance) {
+ // Can have multiple items at the same distance in which case we sort by size
+ nearestItems.push(element);
+ }
+ });
+
+ return nearestItems;
+}
+
+/**
+ * Get a distance metric function for two points based on the
+ * axis mode setting
+ * @param {string} axis - the axis mode. x|y|xy
+ */
+function getDistanceMetricForAxis(axis) {
+ var useX = axis.indexOf('x') !== -1;
+ var useY = axis.indexOf('y') !== -1;
+
+ return function(pt1, pt2) {
+ var deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0;
+ var deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0;
+ return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2));
+ };
+}
+
+function indexMode(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ // Default axis for index mode is 'x' to match old behaviour
+ options.axis = options.axis || 'x';
+ var distanceMetric = getDistanceMetricForAxis(options.axis);
+ var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
+ var elements = [];
+
+ if (!items.length) {
+ return [];
+ }
+
+ chart.data.datasets.forEach(function(dataset, datasetIndex) {
+ if (chart.isDatasetVisible(datasetIndex)) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ var element = meta.data[items[0]._index];
+
+ // don't count items that are skipped (null data)
+ if (element && !element._view.skip) {
+ elements.push(element);
+ }
+ }
+ });
+
+ return elements;
+}
+
+/**
+ * @interface IInteractionOptions
+ */
+/**
+ * If true, only consider items that intersect the point
+ * @name IInterfaceOptions#boolean
+ * @type Boolean
+ */
+
+/**
+ * Contains interaction related functions
+ * @namespace Chart.Interaction
+ */
+var core_interaction = {
+ // Helper function for different modes
+ modes: {
+ single: function(chart, e) {
+ var position = getRelativePosition(e, chart);
+ var elements = [];
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inRange(position.x, position.y)) {
+ elements.push(element);
+ return elements;
+ }
+ });
+
+ return elements.slice(0, 1);
+ },
+
+ /**
+ * @function Chart.Interaction.modes.label
+ * @deprecated since version 2.4.0
+ * @todo remove at version 3
+ * @private
+ */
+ label: indexMode,
+
+ /**
+ * Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something
+ * If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item
+ * @function Chart.Interaction.modes.index
+ * @since v2.4.0
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use during interaction
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ index: indexMode,
+
+ /**
+ * Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something
+ * If the options.intersect is false, we find the nearest item and return the items in that dataset
+ * @function Chart.Interaction.modes.dataset
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use during interaction
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ dataset: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ options.axis = options.axis || 'xy';
+ var distanceMetric = getDistanceMetricForAxis(options.axis);
+ var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
+
+ if (items.length > 0) {
+ items = chart.getDatasetMeta(items[0]._datasetIndex).data;
+ }
+
+ return items;
+ },
+
+ /**
+ * @function Chart.Interaction.modes.x-axis
+ * @deprecated since version 2.4.0. Use index mode and intersect == true
+ * @todo remove at version 3
+ * @private
+ */
+ 'x-axis': function(chart, e) {
+ return indexMode(chart, e, {intersect: false});
+ },
+
+ /**
+ * Point mode returns all elements that hit test based on the event position
+ * of the event
+ * @function Chart.Interaction.modes.intersect
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ point: function(chart, e) {
+ var position = getRelativePosition(e, chart);
+ return getIntersectItems(chart, position);
+ },
+
+ /**
+ * nearest mode returns the element closest to the point
+ * @function Chart.Interaction.modes.intersect
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ nearest: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ options.axis = options.axis || 'xy';
+ var distanceMetric = getDistanceMetricForAxis(options.axis);
+ return getNearestItems(chart, position, options.intersect, distanceMetric);
+ },
+
+ /**
+ * x mode returns the elements that hit-test at the current x coordinate
+ * @function Chart.Interaction.modes.x
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ x: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ var items = [];
+ var intersectsItem = false;
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inXRange(position.x)) {
+ items.push(element);
+ }
+
+ if (element.inRange(position.x, position.y)) {
+ intersectsItem = true;
+ }
+ });
+
+ // If we want to trigger on an intersect and we don't have any items
+ // that intersect the position, return nothing
+ if (options.intersect && !intersectsItem) {
+ items = [];
+ }
+ return items;
+ },
+
+ /**
+ * y mode returns the elements that hit-test at the current y coordinate
+ * @function Chart.Interaction.modes.y
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ y: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ var items = [];
+ var intersectsItem = false;
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inYRange(position.y)) {
+ items.push(element);
+ }
+
+ if (element.inRange(position.x, position.y)) {
+ intersectsItem = true;
+ }
+ });
+
+ // If we want to trigger on an intersect and we don't have any items
+ // that intersect the position, return nothing
+ if (options.intersect && !intersectsItem) {
+ items = [];
+ }
+ return items;
+ }
+ }
+};
+
+function filterByPosition(array, position) {
+ return helpers$1.where(array, function(v) {
+ return v.position === position;
+ });
+}
+
+function sortByWeight(array, reverse) {
+ array.forEach(function(v, i) {
+ v._tmpIndex_ = i;
+ return v;
+ });
+ array.sort(function(a, b) {
+ var v0 = reverse ? b : a;
+ var v1 = reverse ? a : b;
+ return v0.weight === v1.weight ?
+ v0._tmpIndex_ - v1._tmpIndex_ :
+ v0.weight - v1.weight;
+ });
+ array.forEach(function(v) {
+ delete v._tmpIndex_;
+ });
+}
+
+function findMaxPadding(boxes) {
+ var top = 0;
+ var left = 0;
+ var bottom = 0;
+ var right = 0;
+ helpers$1.each(boxes, function(box) {
+ if (box.getPadding) {
+ var boxPadding = box.getPadding();
+ top = Math.max(top, boxPadding.top);
+ left = Math.max(left, boxPadding.left);
+ bottom = Math.max(bottom, boxPadding.bottom);
+ right = Math.max(right, boxPadding.right);
+ }
+ });
+ return {
+ top: top,
+ left: left,
+ bottom: bottom,
+ right: right
+ };
+}
+
+function addSizeByPosition(boxes, size) {
+ helpers$1.each(boxes, function(box) {
+ size[box.position] += box.isHorizontal() ? box.height : box.width;
+ });
+}
+
+core_defaults._set('global', {
+ layout: {
+ padding: {
+ top: 0,
+ right: 0,
+ bottom: 0,
+ left: 0
+ }
+ }
+});
+
+/**
+ * @interface ILayoutItem
+ * @prop {string} position - The position of the item in the chart layout. Possible values are
+ * 'left', 'top', 'right', 'bottom', and 'chartArea'
+ * @prop {number} weight - The weight used to sort the item. Higher weights are further away from the chart area
+ * @prop {boolean} fullWidth - if true, and the item is horizontal, then push vertical boxes down
+ * @prop {function} isHorizontal - returns true if the layout item is horizontal (ie. top or bottom)
+ * @prop {function} update - Takes two parameters: width and height. Returns size of item
+ * @prop {function} getPadding - Returns an object with padding on the edges
+ * @prop {number} width - Width of item. Must be valid after update()
+ * @prop {number} height - Height of item. Must be valid after update()
+ * @prop {number} left - Left edge of the item. Set by layout system and cannot be used in update
+ * @prop {number} top - Top edge of the item. Set by layout system and cannot be used in update
+ * @prop {number} right - Right edge of the item. Set by layout system and cannot be used in update
+ * @prop {number} bottom - Bottom edge of the item. Set by layout system and cannot be used in update
+ */
+
+// The layout service is very self explanatory. It's responsible for the layout within a chart.
+// Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need
+// It is this service's responsibility of carrying out that layout.
+var core_layouts = {
+ defaults: {},
+
+ /**
+ * Register a box to a chart.
+ * A box is simply a reference to an object that requires layout. eg. Scales, Legend, Title.
+ * @param {Chart} chart - the chart to use
+ * @param {ILayoutItem} item - the item to add to be layed out
+ */
+ addBox: function(chart, item) {
+ if (!chart.boxes) {
+ chart.boxes = [];
+ }
+
+ // initialize item with default values
+ item.fullWidth = item.fullWidth || false;
+ item.position = item.position || 'top';
+ item.weight = item.weight || 0;
+
+ chart.boxes.push(item);
+ },
+
+ /**
+ * Remove a layoutItem from a chart
+ * @param {Chart} chart - the chart to remove the box from
+ * @param {ILayoutItem} layoutItem - the item to remove from the layout
+ */
+ removeBox: function(chart, layoutItem) {
+ var index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1;
+ if (index !== -1) {
+ chart.boxes.splice(index, 1);
+ }
+ },
+
+ /**
+ * Sets (or updates) options on the given `item`.
+ * @param {Chart} chart - the chart in which the item lives (or will be added to)
+ * @param {ILayoutItem} item - the item to configure with the given options
+ * @param {object} options - the new item options.
+ */
+ configure: function(chart, item, options) {
+ var props = ['fullWidth', 'position', 'weight'];
+ var ilen = props.length;
+ var i = 0;
+ var prop;
+
+ for (; i < ilen; ++i) {
+ prop = props[i];
+ if (options.hasOwnProperty(prop)) {
+ item[prop] = options[prop];
+ }
+ }
+ },
+
+ /**
+ * Fits boxes of the given chart into the given size by having each box measure itself
+ * then running a fitting algorithm
+ * @param {Chart} chart - the chart
+ * @param {number} width - the width to fit into
+ * @param {number} height - the height to fit into
+ */
+ update: function(chart, width, height) {
+ if (!chart) {
+ return;
+ }
+
+ var layoutOptions = chart.options.layout || {};
+ var padding = helpers$1.options.toPadding(layoutOptions.padding);
+ var leftPadding = padding.left;
+ var rightPadding = padding.right;
+ var topPadding = padding.top;
+ var bottomPadding = padding.bottom;
+
+ var leftBoxes = filterByPosition(chart.boxes, 'left');
+ var rightBoxes = filterByPosition(chart.boxes, 'right');
+ var topBoxes = filterByPosition(chart.boxes, 'top');
+ var bottomBoxes = filterByPosition(chart.boxes, 'bottom');
+ var chartAreaBoxes = filterByPosition(chart.boxes, 'chartArea');
+
+ // Sort boxes by weight. A higher weight is further away from the chart area
+ sortByWeight(leftBoxes, true);
+ sortByWeight(rightBoxes, false);
+ sortByWeight(topBoxes, true);
+ sortByWeight(bottomBoxes, false);
+
+ var verticalBoxes = leftBoxes.concat(rightBoxes);
+ var horizontalBoxes = topBoxes.concat(bottomBoxes);
+ var outerBoxes = verticalBoxes.concat(horizontalBoxes);
+
+ // Essentially we now have any number of boxes on each of the 4 sides.
+ // Our canvas looks like the following.
+ // The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and
+ // B1 is the bottom axis
+ // There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays
+ // These locations are single-box locations only, when trying to register a chartArea location that is already taken,
+ // an error will be thrown.
+ //
+ // |----------------------------------------------------|
+ // | T1 (Full Width) |
+ // |----------------------------------------------------|
+ // | | | T2 | |
+ // | |----|-------------------------------------|----|
+ // | | | C1 | | C2 | |
+ // | | |----| |----| |
+ // | | | | |
+ // | L1 | L2 | ChartArea (C0) | R1 |
+ // | | | | |
+ // | | |----| |----| |
+ // | | | C3 | | C4 | |
+ // | |----|-------------------------------------|----|
+ // | | | B1 | |
+ // |----------------------------------------------------|
+ // | B2 (Full Width) |
+ // |----------------------------------------------------|
+ //
+ // What we do to find the best sizing, we do the following
+ // 1. Determine the minimum size of the chart area.
+ // 2. Split the remaining width equally between each vertical axis
+ // 3. Split the remaining height equally between each horizontal axis
+ // 4. Give each layout the maximum size it can be. The layout will return it's minimum size
+ // 5. Adjust the sizes of each axis based on it's minimum reported size.
+ // 6. Refit each axis
+ // 7. Position each axis in the final location
+ // 8. Tell the chart the final location of the chart area
+ // 9. Tell any axes that overlay the chart area the positions of the chart area
+
+ // Step 1
+ var chartWidth = width - leftPadding - rightPadding;
+ var chartHeight = height - topPadding - bottomPadding;
+ var chartAreaWidth = chartWidth / 2; // min 50%
+
+ // Step 2
+ var verticalBoxWidth = (width - chartAreaWidth) / verticalBoxes.length;
+
+ // Step 3
+ // TODO re-limit horizontal axis height (this limit has affected only padding calculation since PR 1837)
+ // var horizontalBoxHeight = (height - chartAreaHeight) / horizontalBoxes.length;
+
+ // Step 4
+ var maxChartAreaWidth = chartWidth;
+ var maxChartAreaHeight = chartHeight;
+ var outerBoxSizes = {top: topPadding, left: leftPadding, bottom: bottomPadding, right: rightPadding};
+ var minBoxSizes = [];
+ var maxPadding;
+
+ function getMinimumBoxSize(box) {
+ var minSize;
+ var isHorizontal = box.isHorizontal();
+
+ if (isHorizontal) {
+ minSize = box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2);
+ maxChartAreaHeight -= minSize.height;
+ } else {
+ minSize = box.update(verticalBoxWidth, maxChartAreaHeight);
+ maxChartAreaWidth -= minSize.width;
+ }
+
+ minBoxSizes.push({
+ horizontal: isHorizontal,
+ width: minSize.width,
+ box: box,
+ });
+ }
+
+ helpers$1.each(outerBoxes, getMinimumBoxSize);
+
+ // If a horizontal box has padding, we move the left boxes over to avoid ugly charts (see issue #2478)
+ maxPadding = findMaxPadding(outerBoxes);
+
+ // At this point, maxChartAreaHeight and maxChartAreaWidth are the size the chart area could
+ // be if the axes are drawn at their minimum sizes.
+ // Steps 5 & 6
+
+ // Function to fit a box
+ function fitBox(box) {
+ var minBoxSize = helpers$1.findNextWhere(minBoxSizes, function(minBox) {
+ return minBox.box === box;
+ });
+
+ if (minBoxSize) {
+ if (minBoxSize.horizontal) {
+ var scaleMargin = {
+ left: Math.max(outerBoxSizes.left, maxPadding.left),
+ right: Math.max(outerBoxSizes.right, maxPadding.right),
+ top: 0,
+ bottom: 0
+ };
+
+ // Don't use min size here because of label rotation. When the labels are rotated, their rotation highly depends
+ // on the margin. Sometimes they need to increase in size slightly
+ box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2, scaleMargin);
+ } else {
+ box.update(minBoxSize.width, maxChartAreaHeight);
+ }
+ }
+ }
+
+ // Update, and calculate the left and right margins for the horizontal boxes
+ helpers$1.each(verticalBoxes, fitBox);
+ addSizeByPosition(verticalBoxes, outerBoxSizes);
+
+ // Set the Left and Right margins for the horizontal boxes
+ helpers$1.each(horizontalBoxes, fitBox);
+ addSizeByPosition(horizontalBoxes, outerBoxSizes);
+
+ function finalFitVerticalBox(box) {
+ var minBoxSize = helpers$1.findNextWhere(minBoxSizes, function(minSize) {
+ return minSize.box === box;
+ });
+
+ var scaleMargin = {
+ left: 0,
+ right: 0,
+ top: outerBoxSizes.top,
+ bottom: outerBoxSizes.bottom
+ };
+
+ if (minBoxSize) {
+ box.update(minBoxSize.width, maxChartAreaHeight, scaleMargin);
+ }
+ }
+
+ // Let the left layout know the final margin
+ helpers$1.each(verticalBoxes, finalFitVerticalBox);
+
+ // Recalculate because the size of each layout might have changed slightly due to the margins (label rotation for instance)
+ outerBoxSizes = {top: topPadding, left: leftPadding, bottom: bottomPadding, right: rightPadding};
+ addSizeByPosition(outerBoxes, outerBoxSizes);
+
+ // We may be adding some padding to account for rotated x axis labels
+ var leftPaddingAddition = Math.max(maxPadding.left - outerBoxSizes.left, 0);
+ outerBoxSizes.left += leftPaddingAddition;
+ outerBoxSizes.right += Math.max(maxPadding.right - outerBoxSizes.right, 0);
+
+ var topPaddingAddition = Math.max(maxPadding.top - outerBoxSizes.top, 0);
+ outerBoxSizes.top += topPaddingAddition;
+ outerBoxSizes.bottom += Math.max(maxPadding.bottom - outerBoxSizes.bottom, 0);
+
+ // Figure out if our chart area changed. This would occur if the dataset layout label rotation
+ // changed due to the application of the margins in step 6. Since we can only get bigger, this is safe to do
+ // without calling `fit` again
+ var newMaxChartAreaHeight = height - outerBoxSizes.top - outerBoxSizes.bottom;
+ var newMaxChartAreaWidth = width - outerBoxSizes.left - outerBoxSizes.right;
+
+ if (newMaxChartAreaWidth !== maxChartAreaWidth || newMaxChartAreaHeight !== maxChartAreaHeight) {
+ helpers$1.each(verticalBoxes, function(box) {
+ box.height = newMaxChartAreaHeight;
+ });
+
+ helpers$1.each(horizontalBoxes, function(box) {
+ if (!box.fullWidth) {
+ box.width = newMaxChartAreaWidth;
+ }
+ });
+
+ maxChartAreaHeight = newMaxChartAreaHeight;
+ maxChartAreaWidth = newMaxChartAreaWidth;
+ }
+
+ // Step 7 - Position the boxes
+ var left = leftPadding + leftPaddingAddition;
+ var top = topPadding + topPaddingAddition;
+
+ function placeBox(box) {
+ if (box.isHorizontal()) {
+ box.left = box.fullWidth ? leftPadding : outerBoxSizes.left;
+ box.right = box.fullWidth ? width - rightPadding : outerBoxSizes.left + maxChartAreaWidth;
+ box.top = top;
+ box.bottom = top + box.height;
+
+ // Move to next point
+ top = box.bottom;
+
+ } else {
+
+ box.left = left;
+ box.right = left + box.width;
+ box.top = outerBoxSizes.top;
+ box.bottom = outerBoxSizes.top + maxChartAreaHeight;
+
+ // Move to next point
+ left = box.right;
+ }
+ }
+
+ helpers$1.each(leftBoxes.concat(topBoxes), placeBox);
+
+ // Account for chart width and height
+ left += maxChartAreaWidth;
+ top += maxChartAreaHeight;
+
+ helpers$1.each(rightBoxes, placeBox);
+ helpers$1.each(bottomBoxes, placeBox);
+
+ // Step 8
+ chart.chartArea = {
+ left: outerBoxSizes.left,
+ top: outerBoxSizes.top,
+ right: outerBoxSizes.left + maxChartAreaWidth,
+ bottom: outerBoxSizes.top + maxChartAreaHeight
+ };
+
+ // Step 9
+ helpers$1.each(chartAreaBoxes, function(box) {
+ box.left = chart.chartArea.left;
+ box.top = chart.chartArea.top;
+ box.right = chart.chartArea.right;
+ box.bottom = chart.chartArea.bottom;
+
+ box.update(maxChartAreaWidth, maxChartAreaHeight);
+ });
+ }
+};
+
+/**
+ * Platform fallback implementation (minimal).
+ * @see https://github.com/chartjs/Chart.js/pull/4591#issuecomment-319575939
+ */
+
+var platform_basic = {
+ acquireContext: function(item) {
+ if (item && item.canvas) {
+ // Support for any object associated to a canvas (including a context2d)
+ item = item.canvas;
+ }
+
+ return item && item.getContext('2d') || null;
+ }
+};
+
+var platform_dom = "/*\n * DOM element rendering detection\n * https://davidwalsh.name/detect-node-insertion\n */\n@keyframes chartjs-render-animation {\n\tfrom { opacity: 0.99; }\n\tto { opacity: 1; }\n}\n\n.chartjs-render-monitor {\n\tanimation: chartjs-render-animation 0.001s;\n}\n\n/*\n * DOM element resizing detection\n * https://github.com/marcj/css-element-queries\n */\n.chartjs-size-monitor,\n.chartjs-size-monitor-expand,\n.chartjs-size-monitor-shrink {\n\tposition: absolute;\n\tdirection: ltr;\n\tleft: 0;\n\ttop: 0;\n\tright: 0;\n\tbottom: 0;\n\toverflow: hidden;\n\tpointer-events: none;\n\tvisibility: hidden;\n\tz-index: -1;\n}\n\n.chartjs-size-monitor-expand > div {\n\tposition: absolute;\n\twidth: 1000000px;\n\theight: 1000000px;\n\tleft: 0;\n\ttop: 0;\n}\n\n.chartjs-size-monitor-shrink > div {\n\tposition: absolute;\n\twidth: 200%;\n\theight: 200%;\n\tleft: 0;\n\ttop: 0;\n}\n";
+
+var platform_dom$1 = /*#__PURE__*/Object.freeze({
+default: platform_dom
+});
+
+function getCjsExportFromNamespace (n) {
+ return n && n.default || n;
+}
+
+var stylesheet = getCjsExportFromNamespace(platform_dom$1);
+
+var EXPANDO_KEY = '$chartjs';
+var CSS_PREFIX = 'chartjs-';
+var CSS_SIZE_MONITOR = CSS_PREFIX + 'size-monitor';
+var CSS_RENDER_MONITOR = CSS_PREFIX + 'render-monitor';
+var CSS_RENDER_ANIMATION = CSS_PREFIX + 'render-animation';
+var ANIMATION_START_EVENTS = ['animationstart', 'webkitAnimationStart'];
+
+/**
+ * DOM event types -> Chart.js event types.
+ * Note: only events with different types are mapped.
+ * @see https://developer.mozilla.org/en-US/docs/Web/Events
+ */
+var EVENT_TYPES = {
+ touchstart: 'mousedown',
+ touchmove: 'mousemove',
+ touchend: 'mouseup',
+ pointerenter: 'mouseenter',
+ pointerdown: 'mousedown',
+ pointermove: 'mousemove',
+ pointerup: 'mouseup',
+ pointerleave: 'mouseout',
+ pointerout: 'mouseout'
+};
+
+/**
+ * The "used" size is the final value of a dimension property after all calculations have
+ * been performed. This method uses the computed style of `element` but returns undefined
+ * if the computed style is not expressed in pixels. That can happen in some cases where
+ * `element` has a size relative to its parent and this last one is not yet displayed,
+ * for example because of `display: none` on a parent node.
+ * @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value
+ * @returns {number} Size in pixels or undefined if unknown.
+ */
+function readUsedSize(element, property) {
+ var value = helpers$1.getStyle(element, property);
+ var matches = value && value.match(/^(\d+)(\.\d+)?px$/);
+ return matches ? Number(matches[1]) : undefined;
+}
+
+/**
+ * Initializes the canvas style and render size without modifying the canvas display size,
+ * since responsiveness is handled by the controller.resize() method. The config is used
+ * to determine the aspect ratio to apply in case no explicit height has been specified.
+ */
+function initCanvas(canvas, config) {
+ var style = canvas.style;
+
+ // NOTE(SB) canvas.getAttribute('width') !== canvas.width: in the first case it
+ // returns null or '' if no explicit value has been set to the canvas attribute.
+ var renderHeight = canvas.getAttribute('height');
+ var renderWidth = canvas.getAttribute('width');
+
+ // Chart.js modifies some canvas values that we want to restore on destroy
+ canvas[EXPANDO_KEY] = {
+ initial: {
+ height: renderHeight,
+ width: renderWidth,
+ style: {
+ display: style.display,
+ height: style.height,
+ width: style.width
+ }
+ }
+ };
+
+ // Force canvas to display as block to avoid extra space caused by inline
+ // elements, which would interfere with the responsive resize process.
+ // https://github.com/chartjs/Chart.js/issues/2538
+ style.display = style.display || 'block';
+
+ if (renderWidth === null || renderWidth === '') {
+ var displayWidth = readUsedSize(canvas, 'width');
+ if (displayWidth !== undefined) {
+ canvas.width = displayWidth;
+ }
+ }
+
+ if (renderHeight === null || renderHeight === '') {
+ if (canvas.style.height === '') {
+ // If no explicit render height and style height, let's apply the aspect ratio,
+ // which one can be specified by the user but also by charts as default option
+ // (i.e. options.aspectRatio). If not specified, use canvas aspect ratio of 2.
+ canvas.height = canvas.width / (config.options.aspectRatio || 2);
+ } else {
+ var displayHeight = readUsedSize(canvas, 'height');
+ if (displayWidth !== undefined) {
+ canvas.height = displayHeight;
+ }
+ }
+ }
+
+ return canvas;
+}
+
+/**
+ * Detects support for options object argument in addEventListener.
+ * https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#Safely_detecting_option_support
+ * @private
+ */
+var supportsEventListenerOptions = (function() {
+ var supports = false;
+ try {
+ var options = Object.defineProperty({}, 'passive', {
+ // eslint-disable-next-line getter-return
+ get: function() {
+ supports = true;
+ }
+ });
+ window.addEventListener('e', null, options);
+ } catch (e) {
+ // continue regardless of error
+ }
+ return supports;
+}());
+
+// Default passive to true as expected by Chrome for 'touchstart' and 'touchend' events.
+// https://github.com/chartjs/Chart.js/issues/4287
+var eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false;
+
+function addListener(node, type, listener) {
+ node.addEventListener(type, listener, eventListenerOptions);
+}
+
+function removeListener(node, type, listener) {
+ node.removeEventListener(type, listener, eventListenerOptions);
+}
+
+function createEvent(type, chart, x, y, nativeEvent) {
+ return {
+ type: type,
+ chart: chart,
+ native: nativeEvent || null,
+ x: x !== undefined ? x : null,
+ y: y !== undefined ? y : null,
+ };
+}
+
+function fromNativeEvent(event, chart) {
+ var type = EVENT_TYPES[event.type] || event.type;
+ var pos = helpers$1.getRelativePosition(event, chart);
+ return createEvent(type, chart, pos.x, pos.y, event);
+}
+
+function throttled(fn, thisArg) {
+ var ticking = false;
+ var args = [];
+
+ return function() {
+ args = Array.prototype.slice.call(arguments);
+ thisArg = thisArg || this;
+
+ if (!ticking) {
+ ticking = true;
+ helpers$1.requestAnimFrame.call(window, function() {
+ ticking = false;
+ fn.apply(thisArg, args);
+ });
+ }
+ };
+}
+
+function createDiv(cls) {
+ var el = document.createElement('div');
+ el.className = cls || '';
+ return el;
+}
+
+// Implementation based on https://github.com/marcj/css-element-queries
+function createResizer(handler) {
+ var maxSize = 1000000;
+
+ // NOTE(SB) Don't use innerHTML because it could be considered unsafe.
+ // https://github.com/chartjs/Chart.js/issues/5902
+ var resizer = createDiv(CSS_SIZE_MONITOR);
+ var expand = createDiv(CSS_SIZE_MONITOR + '-expand');
+ var shrink = createDiv(CSS_SIZE_MONITOR + '-shrink');
+
+ expand.appendChild(createDiv());
+ shrink.appendChild(createDiv());
+
+ resizer.appendChild(expand);
+ resizer.appendChild(shrink);
+ resizer._reset = function() {
+ expand.scrollLeft = maxSize;
+ expand.scrollTop = maxSize;
+ shrink.scrollLeft = maxSize;
+ shrink.scrollTop = maxSize;
+ };
+
+ var onScroll = function() {
+ resizer._reset();
+ handler();
+ };
+
+ addListener(expand, 'scroll', onScroll.bind(expand, 'expand'));
+ addListener(shrink, 'scroll', onScroll.bind(shrink, 'shrink'));
+
+ return resizer;
+}
+
+// https://davidwalsh.name/detect-node-insertion
+function watchForRender(node, handler) {
+ var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
+ var proxy = expando.renderProxy = function(e) {
+ if (e.animationName === CSS_RENDER_ANIMATION) {
+ handler();
+ }
+ };
+
+ helpers$1.each(ANIMATION_START_EVENTS, function(type) {
+ addListener(node, type, proxy);
+ });
+
+ // #4737: Chrome might skip the CSS animation when the CSS_RENDER_MONITOR class
+ // is removed then added back immediately (same animation frame?). Accessing the
+ // `offsetParent` property will force a reflow and re-evaluate the CSS animation.
+ // https://gist.github.com/paulirish/5d52fb081b3570c81e3a#box-metrics
+ // https://github.com/chartjs/Chart.js/issues/4737
+ expando.reflow = !!node.offsetParent;
+
+ node.classList.add(CSS_RENDER_MONITOR);
+}
+
+function unwatchForRender(node) {
+ var expando = node[EXPANDO_KEY] || {};
+ var proxy = expando.renderProxy;
+
+ if (proxy) {
+ helpers$1.each(ANIMATION_START_EVENTS, function(type) {
+ removeListener(node, type, proxy);
+ });
+
+ delete expando.renderProxy;
+ }
+
+ node.classList.remove(CSS_RENDER_MONITOR);
+}
+
+function addResizeListener(node, listener, chart) {
+ var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
+
+ // Let's keep track of this added resizer and thus avoid DOM query when removing it.
+ var resizer = expando.resizer = createResizer(throttled(function() {
+ if (expando.resizer) {
+ var container = chart.options.maintainAspectRatio && node.parentNode;
+ var w = container ? container.clientWidth : 0;
+ listener(createEvent('resize', chart));
+ if (container && container.clientWidth < w && chart.canvas) {
+ // If the container size shrank during chart resize, let's assume
+ // scrollbar appeared. So we resize again with the scrollbar visible -
+ // effectively making chart smaller and the scrollbar hidden again.
+ // Because we are inside `throttled`, and currently `ticking`, scroll
+ // events are ignored during this whole 2 resize process.
+ // If we assumed wrong and something else happened, we are resizing
+ // twice in a frame (potential performance issue)
+ listener(createEvent('resize', chart));
+ }
+ }
+ }));
+
+ // The resizer needs to be attached to the node parent, so we first need to be
+ // sure that `node` is attached to the DOM before injecting the resizer element.
+ watchForRender(node, function() {
+ if (expando.resizer) {
+ var container = node.parentNode;
+ if (container && container !== resizer.parentNode) {
+ container.insertBefore(resizer, container.firstChild);
+ }
+
+ // The container size might have changed, let's reset the resizer state.
+ resizer._reset();
+ }
+ });
+}
+
+function removeResizeListener(node) {
+ var expando = node[EXPANDO_KEY] || {};
+ var resizer = expando.resizer;
+
+ delete expando.resizer;
+ unwatchForRender(node);
+
+ if (resizer && resizer.parentNode) {
+ resizer.parentNode.removeChild(resizer);
+ }
+}
+
+function injectCSS(platform, css) {
+ // https://stackoverflow.com/q/3922139
+ var style = platform._style || document.createElement('style');
+ if (!platform._style) {
+ platform._style = style;
+ css = '/* Chart.js */\n' + css;
+ style.setAttribute('type', 'text/css');
+ document.getElementsByTagName('head')[0].appendChild(style);
+ }
+
+ style.appendChild(document.createTextNode(css));
+}
+
+var platform_dom$2 = {
+ /**
+ * When `true`, prevents the automatic injection of the stylesheet required to
+ * correctly detect when the chart is added to the DOM and then resized. This
+ * switch has been added to allow external stylesheet (`dist/Chart(.min)?.js`)
+ * to be manually imported to make this library compatible with any CSP.
+ * See https://github.com/chartjs/Chart.js/issues/5208
+ */
+ disableCSSInjection: false,
+
+ /**
+ * This property holds whether this platform is enabled for the current environment.
+ * Currently used by platform.js to select the proper implementation.
+ * @private
+ */
+ _enabled: typeof window !== 'undefined' && typeof document !== 'undefined',
+
+ /**
+ * @private
+ */
+ _ensureLoaded: function() {
+ if (this._loaded) {
+ return;
+ }
+
+ this._loaded = true;
+
+ // https://github.com/chartjs/Chart.js/issues/5208
+ if (!this.disableCSSInjection) {
+ injectCSS(this, stylesheet);
+ }
+ },
+
+ acquireContext: function(item, config) {
+ if (typeof item === 'string') {
+ item = document.getElementById(item);
+ } else if (item.length) {
+ // Support for array based queries (such as jQuery)
+ item = item[0];
+ }
+
+ if (item && item.canvas) {
+ // Support for any object associated to a canvas (including a context2d)
+ item = item.canvas;
+ }
+
+ // To prevent canvas fingerprinting, some add-ons undefine the getContext
+ // method, for example: https://github.com/kkapsner/CanvasBlocker
+ // https://github.com/chartjs/Chart.js/issues/2807
+ var context = item && item.getContext && item.getContext('2d');
+
+ // Load platform resources on first chart creation, to make possible to change
+ // platform options after importing the library (e.g. `disableCSSInjection`).
+ this._ensureLoaded();
+
+ // `instanceof HTMLCanvasElement/CanvasRenderingContext2D` fails when the item is
+ // inside an iframe or when running in a protected environment. We could guess the
+ // types from their toString() value but let's keep things flexible and assume it's
+ // a sufficient condition if the item has a context2D which has item as `canvas`.
+ // https://github.com/chartjs/Chart.js/issues/3887
+ // https://github.com/chartjs/Chart.js/issues/4102
+ // https://github.com/chartjs/Chart.js/issues/4152
+ if (context && context.canvas === item) {
+ initCanvas(item, config);
+ return context;
+ }
+
+ return null;
+ },
+
+ releaseContext: function(context) {
+ var canvas = context.canvas;
+ if (!canvas[EXPANDO_KEY]) {
+ return;
+ }
+
+ var initial = canvas[EXPANDO_KEY].initial;
+ ['height', 'width'].forEach(function(prop) {
+ var value = initial[prop];
+ if (helpers$1.isNullOrUndef(value)) {
+ canvas.removeAttribute(prop);
+ } else {
+ canvas.setAttribute(prop, value);
+ }
+ });
+
+ helpers$1.each(initial.style || {}, function(value, key) {
+ canvas.style[key] = value;
+ });
+
+ // The canvas render size might have been changed (and thus the state stack discarded),
+ // we can't use save() and restore() to restore the initial state. So make sure that at
+ // least the canvas context is reset to the default state by setting the canvas width.
+ // https://www.w3.org/TR/2011/WD-html5-20110525/the-canvas-element.html
+ // eslint-disable-next-line no-self-assign
+ canvas.width = canvas.width;
+
+ delete canvas[EXPANDO_KEY];
+ },
+
+ addEventListener: function(chart, type, listener) {
+ var canvas = chart.canvas;
+ if (type === 'resize') {
+ // Note: the resize event is not supported on all browsers.
+ addResizeListener(canvas, listener, chart);
+ return;
+ }
+
+ var expando = listener[EXPANDO_KEY] || (listener[EXPANDO_KEY] = {});
+ var proxies = expando.proxies || (expando.proxies = {});
+ var proxy = proxies[chart.id + '_' + type] = function(event) {
+ listener(fromNativeEvent(event, chart));
+ };
+
+ addListener(canvas, type, proxy);
+ },
+
+ removeEventListener: function(chart, type, listener) {
+ var canvas = chart.canvas;
+ if (type === 'resize') {
+ // Note: the resize event is not supported on all browsers.
+ removeResizeListener(canvas);
+ return;
+ }
+
+ var expando = listener[EXPANDO_KEY] || {};
+ var proxies = expando.proxies || {};
+ var proxy = proxies[chart.id + '_' + type];
+ if (!proxy) {
+ return;
+ }
+
+ removeListener(canvas, type, proxy);
+ }
+};
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use EventTarget.addEventListener instead.
+ * EventTarget.addEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener
+ * @function Chart.helpers.addEvent
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers$1.addEvent = addListener;
+
+/**
+ * Provided for backward compatibility, use EventTarget.removeEventListener instead.
+ * EventTarget.removeEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/removeEventListener
+ * @function Chart.helpers.removeEvent
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers$1.removeEvent = removeListener;
+
+// @TODO Make possible to select another platform at build time.
+var implementation = platform_dom$2._enabled ? platform_dom$2 : platform_basic;
+
+/**
+ * @namespace Chart.platform
+ * @see https://chartjs.gitbooks.io/proposals/content/Platform.html
+ * @since 2.4.0
+ */
+var platform = helpers$1.extend({
+ /**
+ * @since 2.7.0
+ */
+ initialize: function() {},
+
+ /**
+ * Called at chart construction time, returns a context2d instance implementing
+ * the [W3C Canvas 2D Context API standard]{@link https://www.w3.org/TR/2dcontext/}.
+ * @param {*} item - The native item from which to acquire context (platform specific)
+ * @param {object} options - The chart options
+ * @returns {CanvasRenderingContext2D} context2d instance
+ */
+ acquireContext: function() {},
+
+ /**
+ * Called at chart destruction time, releases any resources associated to the context
+ * previously returned by the acquireContext() method.
+ * @param {CanvasRenderingContext2D} context - The context2d instance
+ * @returns {boolean} true if the method succeeded, else false
+ */
+ releaseContext: function() {},
+
+ /**
+ * Registers the specified listener on the given chart.
+ * @param {Chart} chart - Chart from which to listen for event
+ * @param {string} type - The ({@link IEvent}) type to listen for
+ * @param {function} listener - Receives a notification (an object that implements
+ * the {@link IEvent} interface) when an event of the specified type occurs.
+ */
+ addEventListener: function() {},
+
+ /**
+ * Removes the specified listener previously registered with addEventListener.
+ * @param {Chart} chart - Chart from which to remove the listener
+ * @param {string} type - The ({@link IEvent}) type to remove
+ * @param {function} listener - The listener function to remove from the event target.
+ */
+ removeEventListener: function() {}
+
+}, implementation);
+
+core_defaults._set('global', {
+ plugins: {}
+});
+
+/**
+ * The plugin service singleton
+ * @namespace Chart.plugins
+ * @since 2.1.0
+ */
+var core_plugins = {
+ /**
+ * Globally registered plugins.
+ * @private
+ */
+ _plugins: [],
+
+ /**
+ * This identifier is used to invalidate the descriptors cache attached to each chart
+ * when a global plugin is registered or unregistered. In this case, the cache ID is
+ * incremented and descriptors are regenerated during following API calls.
+ * @private
+ */
+ _cacheId: 0,
+
+ /**
+ * Registers the given plugin(s) if not already registered.
+ * @param {IPlugin[]|IPlugin} plugins plugin instance(s).
+ */
+ register: function(plugins) {
+ var p = this._plugins;
+ ([]).concat(plugins).forEach(function(plugin) {
+ if (p.indexOf(plugin) === -1) {
+ p.push(plugin);
+ }
+ });
+
+ this._cacheId++;
+ },
+
+ /**
+ * Unregisters the given plugin(s) only if registered.
+ * @param {IPlugin[]|IPlugin} plugins plugin instance(s).
+ */
+ unregister: function(plugins) {
+ var p = this._plugins;
+ ([]).concat(plugins).forEach(function(plugin) {
+ var idx = p.indexOf(plugin);
+ if (idx !== -1) {
+ p.splice(idx, 1);
+ }
+ });
+
+ this._cacheId++;
+ },
+
+ /**
+ * Remove all registered plugins.
+ * @since 2.1.5
+ */
+ clear: function() {
+ this._plugins = [];
+ this._cacheId++;
+ },
+
+ /**
+ * Returns the number of registered plugins?
+ * @returns {number}
+ * @since 2.1.5
+ */
+ count: function() {
+ return this._plugins.length;
+ },
+
+ /**
+ * Returns all registered plugin instances.
+ * @returns {IPlugin[]} array of plugin objects.
+ * @since 2.1.5
+ */
+ getAll: function() {
+ return this._plugins;
+ },
+
+ /**
+ * Calls enabled plugins for `chart` on the specified hook and with the given args.
+ * This method immediately returns as soon as a plugin explicitly returns false. The
+ * returned value can be used, for instance, to interrupt the current action.
+ * @param {Chart} chart - The chart instance for which plugins should be called.
+ * @param {string} hook - The name of the plugin method to call (e.g. 'beforeUpdate').
+ * @param {Array} [args] - Extra arguments to apply to the hook call.
+ * @returns {boolean} false if any of the plugins return false, else returns true.
+ */
+ notify: function(chart, hook, args) {
+ var descriptors = this.descriptors(chart);
+ var ilen = descriptors.length;
+ var i, descriptor, plugin, params, method;
+
+ for (i = 0; i < ilen; ++i) {
+ descriptor = descriptors[i];
+ plugin = descriptor.plugin;
+ method = plugin[hook];
+ if (typeof method === 'function') {
+ params = [chart].concat(args || []);
+ params.push(descriptor.options);
+ if (method.apply(plugin, params) === false) {
+ return false;
+ }
+ }
+ }
+
+ return true;
+ },
+
+ /**
+ * Returns descriptors of enabled plugins for the given chart.
+ * @returns {object[]} [{ plugin, options }]
+ * @private
+ */
+ descriptors: function(chart) {
+ var cache = chart.$plugins || (chart.$plugins = {});
+ if (cache.id === this._cacheId) {
+ return cache.descriptors;
+ }
+
+ var plugins = [];
+ var descriptors = [];
+ var config = (chart && chart.config) || {};
+ var options = (config.options && config.options.plugins) || {};
+
+ this._plugins.concat(config.plugins || []).forEach(function(plugin) {
+ var idx = plugins.indexOf(plugin);
+ if (idx !== -1) {
+ return;
+ }
+
+ var id = plugin.id;
+ var opts = options[id];
+ if (opts === false) {
+ return;
+ }
+
+ if (opts === true) {
+ opts = helpers$1.clone(core_defaults.global.plugins[id]);
+ }
+
+ plugins.push(plugin);
+ descriptors.push({
+ plugin: plugin,
+ options: opts || {}
+ });
+ });
+
+ cache.descriptors = descriptors;
+ cache.id = this._cacheId;
+ return descriptors;
+ },
+
+ /**
+ * Invalidates cache for the given chart: descriptors hold a reference on plugin option,
+ * but in some cases, this reference can be changed by the user when updating options.
+ * https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
+ * @private
+ */
+ _invalidate: function(chart) {
+ delete chart.$plugins;
+ }
+};
+
+var core_scaleService = {
+ // Scale registration object. Extensions can register new scale types (such as log or DB scales) and then
+ // use the new chart options to grab the correct scale
+ constructors: {},
+ // Use a registration function so that we can move to an ES6 map when we no longer need to support
+ // old browsers
+
+ // Scale config defaults
+ defaults: {},
+ registerScaleType: function(type, scaleConstructor, scaleDefaults) {
+ this.constructors[type] = scaleConstructor;
+ this.defaults[type] = helpers$1.clone(scaleDefaults);
+ },
+ getScaleConstructor: function(type) {
+ return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined;
+ },
+ getScaleDefaults: function(type) {
+ // Return the scale defaults merged with the global settings so that we always use the latest ones
+ return this.defaults.hasOwnProperty(type) ? helpers$1.merge({}, [core_defaults.scale, this.defaults[type]]) : {};
+ },
+ updateScaleDefaults: function(type, additions) {
+ var me = this;
+ if (me.defaults.hasOwnProperty(type)) {
+ me.defaults[type] = helpers$1.extend(me.defaults[type], additions);
+ }
+ },
+ addScalesToLayout: function(chart) {
+ // Adds each scale to the chart.boxes array to be sized accordingly
+ helpers$1.each(chart.scales, function(scale) {
+ // Set ILayoutItem parameters for backwards compatibility
+ scale.fullWidth = scale.options.fullWidth;
+ scale.position = scale.options.position;
+ scale.weight = scale.options.weight;
+ core_layouts.addBox(chart, scale);
+ });
+ }
+};
+
+var valueOrDefault$7 = helpers$1.valueOrDefault;
+
+core_defaults._set('global', {
+ tooltips: {
+ enabled: true,
+ custom: null,
+ mode: 'nearest',
+ position: 'average',
+ intersect: true,
+ backgroundColor: 'rgba(0,0,0,0.8)',
+ titleFontStyle: 'bold',
+ titleSpacing: 2,
+ titleMarginBottom: 6,
+ titleFontColor: '#fff',
+ titleAlign: 'left',
+ bodySpacing: 2,
+ bodyFontColor: '#fff',
+ bodyAlign: 'left',
+ footerFontStyle: 'bold',
+ footerSpacing: 2,
+ footerMarginTop: 6,
+ footerFontColor: '#fff',
+ footerAlign: 'left',
+ yPadding: 6,
+ xPadding: 6,
+ caretPadding: 2,
+ caretSize: 5,
+ cornerRadius: 6,
+ multiKeyBackground: '#fff',
+ displayColors: true,
+ borderColor: 'rgba(0,0,0,0)',
+ borderWidth: 0,
+ callbacks: {
+ // Args are: (tooltipItems, data)
+ beforeTitle: helpers$1.noop,
+ title: function(tooltipItems, data) {
+ var title = '';
+ var labels = data.labels;
+ var labelCount = labels ? labels.length : 0;
+
+ if (tooltipItems.length > 0) {
+ var item = tooltipItems[0];
+ if (item.label) {
+ title = item.label;
+ } else if (item.xLabel) {
+ title = item.xLabel;
+ } else if (labelCount > 0 && item.index < labelCount) {
+ title = labels[item.index];
+ }
+ }
+
+ return title;
+ },
+ afterTitle: helpers$1.noop,
+
+ // Args are: (tooltipItems, data)
+ beforeBody: helpers$1.noop,
+
+ // Args are: (tooltipItem, data)
+ beforeLabel: helpers$1.noop,
+ label: function(tooltipItem, data) {
+ var label = data.datasets[tooltipItem.datasetIndex].label || '';
+
+ if (label) {
+ label += ': ';
+ }
+ if (!helpers$1.isNullOrUndef(tooltipItem.value)) {
+ label += tooltipItem.value;
+ } else {
+ label += tooltipItem.yLabel;
+ }
+ return label;
+ },
+ labelColor: function(tooltipItem, chart) {
+ var meta = chart.getDatasetMeta(tooltipItem.datasetIndex);
+ var activeElement = meta.data[tooltipItem.index];
+ var view = activeElement._view;
+ return {
+ borderColor: view.borderColor,
+ backgroundColor: view.backgroundColor
+ };
+ },
+ labelTextColor: function() {
+ return this._options.bodyFontColor;
+ },
+ afterLabel: helpers$1.noop,
+
+ // Args are: (tooltipItems, data)
+ afterBody: helpers$1.noop,
+
+ // Args are: (tooltipItems, data)
+ beforeFooter: helpers$1.noop,
+ footer: helpers$1.noop,
+ afterFooter: helpers$1.noop
+ }
+ }
+});
+
+var positioners = {
+ /**
+ * Average mode places the tooltip at the average position of the elements shown
+ * @function Chart.Tooltip.positioners.average
+ * @param elements {ChartElement[]} the elements being displayed in the tooltip
+ * @returns {object} tooltip position
+ */
+ average: function(elements) {
+ if (!elements.length) {
+ return false;
+ }
+
+ var i, len;
+ var x = 0;
+ var y = 0;
+ var count = 0;
+
+ for (i = 0, len = elements.length; i < len; ++i) {
+ var el = elements[i];
+ if (el && el.hasValue()) {
+ var pos = el.tooltipPosition();
+ x += pos.x;
+ y += pos.y;
+ ++count;
+ }
+ }
+
+ return {
+ x: x / count,
+ y: y / count
+ };
+ },
+
+ /**
+ * Gets the tooltip position nearest of the item nearest to the event position
+ * @function Chart.Tooltip.positioners.nearest
+ * @param elements {Chart.Element[]} the tooltip elements
+ * @param eventPosition {object} the position of the event in canvas coordinates
+ * @returns {object} the tooltip position
+ */
+ nearest: function(elements, eventPosition) {
+ var x = eventPosition.x;
+ var y = eventPosition.y;
+ var minDistance = Number.POSITIVE_INFINITY;
+ var i, len, nearestElement;
+
+ for (i = 0, len = elements.length; i < len; ++i) {
+ var el = elements[i];
+ if (el && el.hasValue()) {
+ var center = el.getCenterPoint();
+ var d = helpers$1.distanceBetweenPoints(eventPosition, center);
+
+ if (d < minDistance) {
+ minDistance = d;
+ nearestElement = el;
+ }
+ }
+ }
+
+ if (nearestElement) {
+ var tp = nearestElement.tooltipPosition();
+ x = tp.x;
+ y = tp.y;
+ }
+
+ return {
+ x: x,
+ y: y
+ };
+ }
+};
+
+// Helper to push or concat based on if the 2nd parameter is an array or not
+function pushOrConcat(base, toPush) {
+ if (toPush) {
+ if (helpers$1.isArray(toPush)) {
+ // base = base.concat(toPush);
+ Array.prototype.push.apply(base, toPush);
+ } else {
+ base.push(toPush);
+ }
+ }
+
+ return base;
+}
+
+/**
+ * Returns array of strings split by newline
+ * @param {string} value - The value to split by newline.
+ * @returns {string[]} value if newline present - Returned from String split() method
+ * @function
+ */
+function splitNewlines(str) {
+ if ((typeof str === 'string' || str instanceof String) && str.indexOf('\n') > -1) {
+ return str.split('\n');
+ }
+ return str;
+}
+
+
+/**
+ * Private helper to create a tooltip item model
+ * @param element - the chart element (point, arc, bar) to create the tooltip item for
+ * @return new tooltip item
+ */
+function createTooltipItem(element) {
+ var xScale = element._xScale;
+ var yScale = element._yScale || element._scale; // handle radar || polarArea charts
+ var index = element._index;
+ var datasetIndex = element._datasetIndex;
+ var controller = element._chart.getDatasetMeta(datasetIndex).controller;
+ var indexScale = controller._getIndexScale();
+ var valueScale = controller._getValueScale();
+
+ return {
+ xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '',
+ yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '',
+ label: indexScale ? '' + indexScale.getLabelForIndex(index, datasetIndex) : '',
+ value: valueScale ? '' + valueScale.getLabelForIndex(index, datasetIndex) : '',
+ index: index,
+ datasetIndex: datasetIndex,
+ x: element._model.x,
+ y: element._model.y
+ };
+}
+
+/**
+ * Helper to get the reset model for the tooltip
+ * @param tooltipOpts {object} the tooltip options
+ */
+function getBaseModel(tooltipOpts) {
+ var globalDefaults = core_defaults.global;
+
+ return {
+ // Positioning
+ xPadding: tooltipOpts.xPadding,
+ yPadding: tooltipOpts.yPadding,
+ xAlign: tooltipOpts.xAlign,
+ yAlign: tooltipOpts.yAlign,
+
+ // Body
+ bodyFontColor: tooltipOpts.bodyFontColor,
+ _bodyFontFamily: valueOrDefault$7(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily),
+ _bodyFontStyle: valueOrDefault$7(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle),
+ _bodyAlign: tooltipOpts.bodyAlign,
+ bodyFontSize: valueOrDefault$7(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize),
+ bodySpacing: tooltipOpts.bodySpacing,
+
+ // Title
+ titleFontColor: tooltipOpts.titleFontColor,
+ _titleFontFamily: valueOrDefault$7(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily),
+ _titleFontStyle: valueOrDefault$7(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle),
+ titleFontSize: valueOrDefault$7(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize),
+ _titleAlign: tooltipOpts.titleAlign,
+ titleSpacing: tooltipOpts.titleSpacing,
+ titleMarginBottom: tooltipOpts.titleMarginBottom,
+
+ // Footer
+ footerFontColor: tooltipOpts.footerFontColor,
+ _footerFontFamily: valueOrDefault$7(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily),
+ _footerFontStyle: valueOrDefault$7(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle),
+ footerFontSize: valueOrDefault$7(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize),
+ _footerAlign: tooltipOpts.footerAlign,
+ footerSpacing: tooltipOpts.footerSpacing,
+ footerMarginTop: tooltipOpts.footerMarginTop,
+
+ // Appearance
+ caretSize: tooltipOpts.caretSize,
+ cornerRadius: tooltipOpts.cornerRadius,
+ backgroundColor: tooltipOpts.backgroundColor,
+ opacity: 0,
+ legendColorBackground: tooltipOpts.multiKeyBackground,
+ displayColors: tooltipOpts.displayColors,
+ borderColor: tooltipOpts.borderColor,
+ borderWidth: tooltipOpts.borderWidth
+ };
+}
+
+/**
+ * Get the size of the tooltip
+ */
+function getTooltipSize(tooltip, model) {
+ var ctx = tooltip._chart.ctx;
+
+ var height = model.yPadding * 2; // Tooltip Padding
+ var width = 0;
+
+ // Count of all lines in the body
+ var body = model.body;
+ var combinedBodyLength = body.reduce(function(count, bodyItem) {
+ return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length;
+ }, 0);
+ combinedBodyLength += model.beforeBody.length + model.afterBody.length;
+
+ var titleLineCount = model.title.length;
+ var footerLineCount = model.footer.length;
+ var titleFontSize = model.titleFontSize;
+ var bodyFontSize = model.bodyFontSize;
+ var footerFontSize = model.footerFontSize;
+
+ height += titleLineCount * titleFontSize; // Title Lines
+ height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing
+ height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin
+ height += combinedBodyLength * bodyFontSize; // Body Lines
+ height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing
+ height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin
+ height += footerLineCount * (footerFontSize); // Footer Lines
+ height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing
+
+ // Title width
+ var widthPadding = 0;
+ var maxLineWidth = function(line) {
+ width = Math.max(width, ctx.measureText(line).width + widthPadding);
+ };
+
+ ctx.font = helpers$1.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily);
+ helpers$1.each(model.title, maxLineWidth);
+
+ // Body width
+ ctx.font = helpers$1.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily);
+ helpers$1.each(model.beforeBody.concat(model.afterBody), maxLineWidth);
+
+ // Body lines may include some extra width due to the color box
+ widthPadding = model.displayColors ? (bodyFontSize + 2) : 0;
+ helpers$1.each(body, function(bodyItem) {
+ helpers$1.each(bodyItem.before, maxLineWidth);
+ helpers$1.each(bodyItem.lines, maxLineWidth);
+ helpers$1.each(bodyItem.after, maxLineWidth);
+ });
+
+ // Reset back to 0
+ widthPadding = 0;
+
+ // Footer width
+ ctx.font = helpers$1.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily);
+ helpers$1.each(model.footer, maxLineWidth);
+
+ // Add padding
+ width += 2 * model.xPadding;
+
+ return {
+ width: width,
+ height: height
+ };
+}
+
+/**
+ * Helper to get the alignment of a tooltip given the size
+ */
+function determineAlignment(tooltip, size) {
+ var model = tooltip._model;
+ var chart = tooltip._chart;
+ var chartArea = tooltip._chart.chartArea;
+ var xAlign = 'center';
+ var yAlign = 'center';
+
+ if (model.y < size.height) {
+ yAlign = 'top';
+ } else if (model.y > (chart.height - size.height)) {
+ yAlign = 'bottom';
+ }
+
+ var lf, rf; // functions to determine left, right alignment
+ var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart
+ var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges
+ var midX = (chartArea.left + chartArea.right) / 2;
+ var midY = (chartArea.top + chartArea.bottom) / 2;
+
+ if (yAlign === 'center') {
+ lf = function(x) {
+ return x <= midX;
+ };
+ rf = function(x) {
+ return x > midX;
+ };
+ } else {
+ lf = function(x) {
+ return x <= (size.width / 2);
+ };
+ rf = function(x) {
+ return x >= (chart.width - (size.width / 2));
+ };
+ }
+
+ olf = function(x) {
+ return x + size.width + model.caretSize + model.caretPadding > chart.width;
+ };
+ orf = function(x) {
+ return x - size.width - model.caretSize - model.caretPadding < 0;
+ };
+ yf = function(y) {
+ return y <= midY ? 'top' : 'bottom';
+ };
+
+ if (lf(model.x)) {
+ xAlign = 'left';
+
+ // Is tooltip too wide and goes over the right side of the chart.?
+ if (olf(model.x)) {
+ xAlign = 'center';
+ yAlign = yf(model.y);
+ }
+ } else if (rf(model.x)) {
+ xAlign = 'right';
+
+ // Is tooltip too wide and goes outside left edge of canvas?
+ if (orf(model.x)) {
+ xAlign = 'center';
+ yAlign = yf(model.y);
+ }
+ }
+
+ var opts = tooltip._options;
+ return {
+ xAlign: opts.xAlign ? opts.xAlign : xAlign,
+ yAlign: opts.yAlign ? opts.yAlign : yAlign
+ };
+}
+
+/**
+ * Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment
+ */
+function getBackgroundPoint(vm, size, alignment, chart) {
+ // Background Position
+ var x = vm.x;
+ var y = vm.y;
+
+ var caretSize = vm.caretSize;
+ var caretPadding = vm.caretPadding;
+ var cornerRadius = vm.cornerRadius;
+ var xAlign = alignment.xAlign;
+ var yAlign = alignment.yAlign;
+ var paddingAndSize = caretSize + caretPadding;
+ var radiusAndPadding = cornerRadius + caretPadding;
+
+ if (xAlign === 'right') {
+ x -= size.width;
+ } else if (xAlign === 'center') {
+ x -= (size.width / 2);
+ if (x + size.width > chart.width) {
+ x = chart.width - size.width;
+ }
+ if (x < 0) {
+ x = 0;
+ }
+ }
+
+ if (yAlign === 'top') {
+ y += paddingAndSize;
+ } else if (yAlign === 'bottom') {
+ y -= size.height + paddingAndSize;
+ } else {
+ y -= (size.height / 2);
+ }
+
+ if (yAlign === 'center') {
+ if (xAlign === 'left') {
+ x += paddingAndSize;
+ } else if (xAlign === 'right') {
+ x -= paddingAndSize;
+ }
+ } else if (xAlign === 'left') {
+ x -= radiusAndPadding;
+ } else if (xAlign === 'right') {
+ x += radiusAndPadding;
+ }
+
+ return {
+ x: x,
+ y: y
+ };
+}
+
+function getAlignedX(vm, align) {
+ return align === 'center'
+ ? vm.x + vm.width / 2
+ : align === 'right'
+ ? vm.x + vm.width - vm.xPadding
+ : vm.x + vm.xPadding;
+}
+
+/**
+ * Helper to build before and after body lines
+ */
+function getBeforeAfterBodyLines(callback) {
+ return pushOrConcat([], splitNewlines(callback));
+}
+
+var exports$3 = core_element.extend({
+ initialize: function() {
+ this._model = getBaseModel(this._options);
+ this._lastActive = [];
+ },
+
+ // Get the title
+ // Args are: (tooltipItem, data)
+ getTitle: function() {
+ var me = this;
+ var opts = me._options;
+ var callbacks = opts.callbacks;
+
+ var beforeTitle = callbacks.beforeTitle.apply(me, arguments);
+ var title = callbacks.title.apply(me, arguments);
+ var afterTitle = callbacks.afterTitle.apply(me, arguments);
+
+ var lines = [];
+ lines = pushOrConcat(lines, splitNewlines(beforeTitle));
+ lines = pushOrConcat(lines, splitNewlines(title));
+ lines = pushOrConcat(lines, splitNewlines(afterTitle));
+
+ return lines;
+ },
+
+ // Args are: (tooltipItem, data)
+ getBeforeBody: function() {
+ return getBeforeAfterBodyLines(this._options.callbacks.beforeBody.apply(this, arguments));
+ },
+
+ // Args are: (tooltipItem, data)
+ getBody: function(tooltipItems, data) {
+ var me = this;
+ var callbacks = me._options.callbacks;
+ var bodyItems = [];
+
+ helpers$1.each(tooltipItems, function(tooltipItem) {
+ var bodyItem = {
+ before: [],
+ lines: [],
+ after: []
+ };
+ pushOrConcat(bodyItem.before, splitNewlines(callbacks.beforeLabel.call(me, tooltipItem, data)));
+ pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data));
+ pushOrConcat(bodyItem.after, splitNewlines(callbacks.afterLabel.call(me, tooltipItem, data)));
+
+ bodyItems.push(bodyItem);
+ });
+
+ return bodyItems;
+ },
+
+ // Args are: (tooltipItem, data)
+ getAfterBody: function() {
+ return getBeforeAfterBodyLines(this._options.callbacks.afterBody.apply(this, arguments));
+ },
+
+ // Get the footer and beforeFooter and afterFooter lines
+ // Args are: (tooltipItem, data)
+ getFooter: function() {
+ var me = this;
+ var callbacks = me._options.callbacks;
+
+ var beforeFooter = callbacks.beforeFooter.apply(me, arguments);
+ var footer = callbacks.footer.apply(me, arguments);
+ var afterFooter = callbacks.afterFooter.apply(me, arguments);
+
+ var lines = [];
+ lines = pushOrConcat(lines, splitNewlines(beforeFooter));
+ lines = pushOrConcat(lines, splitNewlines(footer));
+ lines = pushOrConcat(lines, splitNewlines(afterFooter));
+
+ return lines;
+ },
+
+ update: function(changed) {
+ var me = this;
+ var opts = me._options;
+
+ // Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition
+ // that does _view = _model if ease === 1. This causes the 2nd tooltip update to set properties in both the view and model at the same time
+ // which breaks any animations.
+ var existingModel = me._model;
+ var model = me._model = getBaseModel(opts);
+ var active = me._active;
+
+ var data = me._data;
+
+ // In the case where active.length === 0 we need to keep these at existing values for good animations
+ var alignment = {
+ xAlign: existingModel.xAlign,
+ yAlign: existingModel.yAlign
+ };
+ var backgroundPoint = {
+ x: existingModel.x,
+ y: existingModel.y
+ };
+ var tooltipSize = {
+ width: existingModel.width,
+ height: existingModel.height
+ };
+ var tooltipPosition = {
+ x: existingModel.caretX,
+ y: existingModel.caretY
+ };
+
+ var i, len;
+
+ if (active.length) {
+ model.opacity = 1;
+
+ var labelColors = [];
+ var labelTextColors = [];
+ tooltipPosition = positioners[opts.position].call(me, active, me._eventPosition);
+
+ var tooltipItems = [];
+ for (i = 0, len = active.length; i < len; ++i) {
+ tooltipItems.push(createTooltipItem(active[i]));
+ }
+
+ // If the user provided a filter function, use it to modify the tooltip items
+ if (opts.filter) {
+ tooltipItems = tooltipItems.filter(function(a) {
+ return opts.filter(a, data);
+ });
+ }
+
+ // If the user provided a sorting function, use it to modify the tooltip items
+ if (opts.itemSort) {
+ tooltipItems = tooltipItems.sort(function(a, b) {
+ return opts.itemSort(a, b, data);
+ });
+ }
+
+ // Determine colors for boxes
+ helpers$1.each(tooltipItems, function(tooltipItem) {
+ labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, me._chart));
+ labelTextColors.push(opts.callbacks.labelTextColor.call(me, tooltipItem, me._chart));
+ });
+
+
+ // Build the Text Lines
+ model.title = me.getTitle(tooltipItems, data);
+ model.beforeBody = me.getBeforeBody(tooltipItems, data);
+ model.body = me.getBody(tooltipItems, data);
+ model.afterBody = me.getAfterBody(tooltipItems, data);
+ model.footer = me.getFooter(tooltipItems, data);
+
+ // Initial positioning and colors
+ model.x = tooltipPosition.x;
+ model.y = tooltipPosition.y;
+ model.caretPadding = opts.caretPadding;
+ model.labelColors = labelColors;
+ model.labelTextColors = labelTextColors;
+
+ // data points
+ model.dataPoints = tooltipItems;
+
+ // We need to determine alignment of the tooltip
+ tooltipSize = getTooltipSize(this, model);
+ alignment = determineAlignment(this, tooltipSize);
+ // Final Size and Position
+ backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment, me._chart);
+ } else {
+ model.opacity = 0;
+ }
+
+ model.xAlign = alignment.xAlign;
+ model.yAlign = alignment.yAlign;
+ model.x = backgroundPoint.x;
+ model.y = backgroundPoint.y;
+ model.width = tooltipSize.width;
+ model.height = tooltipSize.height;
+
+ // Point where the caret on the tooltip points to
+ model.caretX = tooltipPosition.x;
+ model.caretY = tooltipPosition.y;
+
+ me._model = model;
+
+ if (changed && opts.custom) {
+ opts.custom.call(me, model);
+ }
+
+ return me;
+ },
+
+ drawCaret: function(tooltipPoint, size) {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
+ var caretPosition = this.getCaretPosition(tooltipPoint, size, vm);
+
+ ctx.lineTo(caretPosition.x1, caretPosition.y1);
+ ctx.lineTo(caretPosition.x2, caretPosition.y2);
+ ctx.lineTo(caretPosition.x3, caretPosition.y3);
+ },
+ getCaretPosition: function(tooltipPoint, size, vm) {
+ var x1, x2, x3, y1, y2, y3;
+ var caretSize = vm.caretSize;
+ var cornerRadius = vm.cornerRadius;
+ var xAlign = vm.xAlign;
+ var yAlign = vm.yAlign;
+ var ptX = tooltipPoint.x;
+ var ptY = tooltipPoint.y;
+ var width = size.width;
+ var height = size.height;
+
+ if (yAlign === 'center') {
+ y2 = ptY + (height / 2);
+
+ if (xAlign === 'left') {
+ x1 = ptX;
+ x2 = x1 - caretSize;
+ x3 = x1;
+
+ y1 = y2 + caretSize;
+ y3 = y2 - caretSize;
+ } else {
+ x1 = ptX + width;
+ x2 = x1 + caretSize;
+ x3 = x1;
+
+ y1 = y2 - caretSize;
+ y3 = y2 + caretSize;
+ }
+ } else {
+ if (xAlign === 'left') {
+ x2 = ptX + cornerRadius + (caretSize);
+ x1 = x2 - caretSize;
+ x3 = x2 + caretSize;
+ } else if (xAlign === 'right') {
+ x2 = ptX + width - cornerRadius - caretSize;
+ x1 = x2 - caretSize;
+ x3 = x2 + caretSize;
+ } else {
+ x2 = vm.caretX;
+ x1 = x2 - caretSize;
+ x3 = x2 + caretSize;
+ }
+ if (yAlign === 'top') {
+ y1 = ptY;
+ y2 = y1 - caretSize;
+ y3 = y1;
+ } else {
+ y1 = ptY + height;
+ y2 = y1 + caretSize;
+ y3 = y1;
+ // invert drawing order
+ var tmp = x3;
+ x3 = x1;
+ x1 = tmp;
+ }
+ }
+ return {x1: x1, x2: x2, x3: x3, y1: y1, y2: y2, y3: y3};
+ },
+
+ drawTitle: function(pt, vm, ctx) {
+ var title = vm.title;
+
+ if (title.length) {
+ pt.x = getAlignedX(vm, vm._titleAlign);
+
+ ctx.textAlign = vm._titleAlign;
+ ctx.textBaseline = 'top';
+
+ var titleFontSize = vm.titleFontSize;
+ var titleSpacing = vm.titleSpacing;
+
+ ctx.fillStyle = vm.titleFontColor;
+ ctx.font = helpers$1.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily);
+
+ var i, len;
+ for (i = 0, len = title.length; i < len; ++i) {
+ ctx.fillText(title[i], pt.x, pt.y);
+ pt.y += titleFontSize + titleSpacing; // Line Height and spacing
+
+ if (i + 1 === title.length) {
+ pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing
+ }
+ }
+ }
+ },
+
+ drawBody: function(pt, vm, ctx) {
+ var bodyFontSize = vm.bodyFontSize;
+ var bodySpacing = vm.bodySpacing;
+ var bodyAlign = vm._bodyAlign;
+ var body = vm.body;
+ var drawColorBoxes = vm.displayColors;
+ var labelColors = vm.labelColors;
+ var xLinePadding = 0;
+ var colorX = drawColorBoxes ? getAlignedX(vm, 'left') : 0;
+ var textColor;
+
+ ctx.textAlign = bodyAlign;
+ ctx.textBaseline = 'top';
+ ctx.font = helpers$1.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);
+
+ pt.x = getAlignedX(vm, bodyAlign);
+
+ // Before Body
+ var fillLineOfText = function(line) {
+ ctx.fillText(line, pt.x + xLinePadding, pt.y);
+ pt.y += bodyFontSize + bodySpacing;
+ };
+
+ // Before body lines
+ ctx.fillStyle = vm.bodyFontColor;
+ helpers$1.each(vm.beforeBody, fillLineOfText);
+
+ xLinePadding = drawColorBoxes && bodyAlign !== 'right'
+ ? bodyAlign === 'center' ? (bodyFontSize / 2 + 1) : (bodyFontSize + 2)
+ : 0;
+
+ // Draw body lines now
+ helpers$1.each(body, function(bodyItem, i) {
+ textColor = vm.labelTextColors[i];
+ ctx.fillStyle = textColor;
+ helpers$1.each(bodyItem.before, fillLineOfText);
+
+ helpers$1.each(bodyItem.lines, function(line) {
+ // Draw Legend-like boxes if needed
+ if (drawColorBoxes) {
+ // Fill a white rect so that colours merge nicely if the opacity is < 1
+ ctx.fillStyle = vm.legendColorBackground;
+ ctx.fillRect(colorX, pt.y, bodyFontSize, bodyFontSize);
+
+ // Border
+ ctx.lineWidth = 1;
+ ctx.strokeStyle = labelColors[i].borderColor;
+ ctx.strokeRect(colorX, pt.y, bodyFontSize, bodyFontSize);
+
+ // Inner square
+ ctx.fillStyle = labelColors[i].backgroundColor;
+ ctx.fillRect(colorX + 1, pt.y + 1, bodyFontSize - 2, bodyFontSize - 2);
+ ctx.fillStyle = textColor;
+ }
+
+ fillLineOfText(line);
+ });
+
+ helpers$1.each(bodyItem.after, fillLineOfText);
+ });
+
+ // Reset back to 0 for after body
+ xLinePadding = 0;
+
+ // After body lines
+ helpers$1.each(vm.afterBody, fillLineOfText);
+ pt.y -= bodySpacing; // Remove last body spacing
+ },
+
+ drawFooter: function(pt, vm, ctx) {
+ var footer = vm.footer;
+
+ if (footer.length) {
+ pt.x = getAlignedX(vm, vm._footerAlign);
+ pt.y += vm.footerMarginTop;
+
+ ctx.textAlign = vm._footerAlign;
+ ctx.textBaseline = 'top';
+
+ ctx.fillStyle = vm.footerFontColor;
+ ctx.font = helpers$1.fontString(vm.footerFontSize, vm._footerFontStyle, vm._footerFontFamily);
+
+ helpers$1.each(footer, function(line) {
+ ctx.fillText(line, pt.x, pt.y);
+ pt.y += vm.footerFontSize + vm.footerSpacing;
+ });
+ }
+ },
+
+ drawBackground: function(pt, vm, ctx, tooltipSize) {
+ ctx.fillStyle = vm.backgroundColor;
+ ctx.strokeStyle = vm.borderColor;
+ ctx.lineWidth = vm.borderWidth;
+ var xAlign = vm.xAlign;
+ var yAlign = vm.yAlign;
+ var x = pt.x;
+ var y = pt.y;
+ var width = tooltipSize.width;
+ var height = tooltipSize.height;
+ var radius = vm.cornerRadius;
+
+ ctx.beginPath();
+ ctx.moveTo(x + radius, y);
+ if (yAlign === 'top') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x + width - radius, y);
+ ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
+ if (yAlign === 'center' && xAlign === 'right') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x + width, y + height - radius);
+ ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
+ if (yAlign === 'bottom') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x + radius, y + height);
+ ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
+ if (yAlign === 'center' && xAlign === 'left') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x, y + radius);
+ ctx.quadraticCurveTo(x, y, x + radius, y);
+ ctx.closePath();
+
+ ctx.fill();
+
+ if (vm.borderWidth > 0) {
+ ctx.stroke();
+ }
+ },
+
+ draw: function() {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
+
+ if (vm.opacity === 0) {
+ return;
+ }
+
+ var tooltipSize = {
+ width: vm.width,
+ height: vm.height
+ };
+ var pt = {
+ x: vm.x,
+ y: vm.y
+ };
+
+ // IE11/Edge does not like very small opacities, so snap to 0
+ var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity;
+
+ // Truthy/falsey value for empty tooltip
+ var hasTooltipContent = vm.title.length || vm.beforeBody.length || vm.body.length || vm.afterBody.length || vm.footer.length;
+
+ if (this._options.enabled && hasTooltipContent) {
+ ctx.save();
+ ctx.globalAlpha = opacity;
+
+ // Draw Background
+ this.drawBackground(pt, vm, ctx, tooltipSize);
+
+ // Draw Title, Body, and Footer
+ pt.y += vm.yPadding;
+
+ // Titles
+ this.drawTitle(pt, vm, ctx);
+
+ // Body
+ this.drawBody(pt, vm, ctx);
+
+ // Footer
+ this.drawFooter(pt, vm, ctx);
+
+ ctx.restore();
+ }
+ },
+
+ /**
+ * Handle an event
+ * @private
+ * @param {IEvent} event - The event to handle
+ * @returns {boolean} true if the tooltip changed
+ */
+ handleEvent: function(e) {
+ var me = this;
+ var options = me._options;
+ var changed = false;
+
+ me._lastActive = me._lastActive || [];
+
+ // Find Active Elements for tooltips
+ if (e.type === 'mouseout') {
+ me._active = [];
+ } else {
+ me._active = me._chart.getElementsAtEventForMode(e, options.mode, options);
+ }
+
+ // Remember Last Actives
+ changed = !helpers$1.arrayEquals(me._active, me._lastActive);
+
+ // Only handle target event on tooltip change
+ if (changed) {
+ me._lastActive = me._active;
+
+ if (options.enabled || options.custom) {
+ me._eventPosition = {
+ x: e.x,
+ y: e.y
+ };
+
+ me.update(true);
+ me.pivot();
+ }
+ }
+
+ return changed;
+ }
+});
+
+/**
+ * @namespace Chart.Tooltip.positioners
+ */
+var positioners_1 = positioners;
+
+var core_tooltip = exports$3;
+core_tooltip.positioners = positioners_1;
+
+var valueOrDefault$8 = helpers$1.valueOrDefault;
+
+core_defaults._set('global', {
+ elements: {},
+ events: [
+ 'mousemove',
+ 'mouseout',
+ 'click',
+ 'touchstart',
+ 'touchmove'
+ ],
+ hover: {
+ onHover: null,
+ mode: 'nearest',
+ intersect: true,
+ animationDuration: 400
+ },
+ onClick: null,
+ maintainAspectRatio: true,
+ responsive: true,
+ responsiveAnimationDuration: 0
+});
+
+/**
+ * Recursively merge the given config objects representing the `scales` option
+ * by incorporating scale defaults in `xAxes` and `yAxes` array items, then
+ * returns a deep copy of the result, thus doesn't alter inputs.
+ */
+function mergeScaleConfig(/* config objects ... */) {
+ return helpers$1.merge({}, [].slice.call(arguments), {
+ merger: function(key, target, source, options) {
+ if (key === 'xAxes' || key === 'yAxes') {
+ var slen = source[key].length;
+ var i, type, scale;
+
+ if (!target[key]) {
+ target[key] = [];
+ }
+
+ for (i = 0; i < slen; ++i) {
+ scale = source[key][i];
+ type = valueOrDefault$8(scale.type, key === 'xAxes' ? 'category' : 'linear');
+
+ if (i >= target[key].length) {
+ target[key].push({});
+ }
+
+ if (!target[key][i].type || (scale.type && scale.type !== target[key][i].type)) {
+ // new/untyped scale or type changed: let's apply the new defaults
+ // then merge source scale to correctly overwrite the defaults.
+ helpers$1.merge(target[key][i], [core_scaleService.getScaleDefaults(type), scale]);
+ } else {
+ // scales type are the same
+ helpers$1.merge(target[key][i], scale);
+ }
+ }
+ } else {
+ helpers$1._merger(key, target, source, options);
+ }
+ }
+ });
+}
+
+/**
+ * Recursively merge the given config objects as the root options by handling
+ * default scale options for the `scales` and `scale` properties, then returns
+ * a deep copy of the result, thus doesn't alter inputs.
+ */
+function mergeConfig(/* config objects ... */) {
+ return helpers$1.merge({}, [].slice.call(arguments), {
+ merger: function(key, target, source, options) {
+ var tval = target[key] || {};
+ var sval = source[key];
+
+ if (key === 'scales') {
+ // scale config merging is complex. Add our own function here for that
+ target[key] = mergeScaleConfig(tval, sval);
+ } else if (key === 'scale') {
+ // used in polar area & radar charts since there is only one scale
+ target[key] = helpers$1.merge(tval, [core_scaleService.getScaleDefaults(sval.type), sval]);
+ } else {
+ helpers$1._merger(key, target, source, options);
+ }
+ }
+ });
+}
+
+function initConfig(config) {
+ config = config || {};
+
+ // Do NOT use mergeConfig for the data object because this method merges arrays
+ // and so would change references to labels and datasets, preventing data updates.
+ var data = config.data = config.data || {};
+ data.datasets = data.datasets || [];
+ data.labels = data.labels || [];
+
+ config.options = mergeConfig(
+ core_defaults.global,
+ core_defaults[config.type],
+ config.options || {});
+
+ return config;
+}
+
+function updateConfig(chart) {
+ var newOptions = chart.options;
+
+ helpers$1.each(chart.scales, function(scale) {
+ core_layouts.removeBox(chart, scale);
+ });
+
+ newOptions = mergeConfig(
+ core_defaults.global,
+ core_defaults[chart.config.type],
+ newOptions);
+
+ chart.options = chart.config.options = newOptions;
+ chart.ensureScalesHaveIDs();
+ chart.buildOrUpdateScales();
+
+ // Tooltip
+ chart.tooltip._options = newOptions.tooltips;
+ chart.tooltip.initialize();
+}
+
+function positionIsHorizontal(position) {
+ return position === 'top' || position === 'bottom';
+}
+
+var Chart = function(item, config) {
+ this.construct(item, config);
+ return this;
+};
+
+helpers$1.extend(Chart.prototype, /** @lends Chart */ {
+ /**
+ * @private
+ */
+ construct: function(item, config) {
+ var me = this;
+
+ config = initConfig(config);
+
+ var context = platform.acquireContext(item, config);
+ var canvas = context && context.canvas;
+ var height = canvas && canvas.height;
+ var width = canvas && canvas.width;
+
+ me.id = helpers$1.uid();
+ me.ctx = context;
+ me.canvas = canvas;
+ me.config = config;
+ me.width = width;
+ me.height = height;
+ me.aspectRatio = height ? width / height : null;
+ me.options = config.options;
+ me._bufferedRender = false;
+
+ /**
+ * Provided for backward compatibility, Chart and Chart.Controller have been merged,
+ * the "instance" still need to be defined since it might be called from plugins.
+ * @prop Chart#chart
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ * @private
+ */
+ me.chart = me;
+ me.controller = me; // chart.chart.controller #inception
+
+ // Add the chart instance to the global namespace
+ Chart.instances[me.id] = me;
+
+ // Define alias to the config data: `chart.data === chart.config.data`
+ Object.defineProperty(me, 'data', {
+ get: function() {
+ return me.config.data;
+ },
+ set: function(value) {
+ me.config.data = value;
+ }
+ });
+
+ if (!context || !canvas) {
+ // The given item is not a compatible context2d element, let's return before finalizing
+ // the chart initialization but after setting basic chart / controller properties that
+ // can help to figure out that the chart is not valid (e.g chart.canvas !== null);
+ // https://github.com/chartjs/Chart.js/issues/2807
+ console.error("Failed to create chart: can't acquire context from the given item");
+ return;
+ }
+
+ me.initialize();
+ me.update();
+ },
+
+ /**
+ * @private
+ */
+ initialize: function() {
+ var me = this;
+
+ // Before init plugin notification
+ core_plugins.notify(me, 'beforeInit');
+
+ helpers$1.retinaScale(me, me.options.devicePixelRatio);
+
+ me.bindEvents();
+
+ if (me.options.responsive) {
+ // Initial resize before chart draws (must be silent to preserve initial animations).
+ me.resize(true);
+ }
+
+ // Make sure scales have IDs and are built before we build any controllers.
+ me.ensureScalesHaveIDs();
+ me.buildOrUpdateScales();
+ me.initToolTip();
+
+ // After init plugin notification
+ core_plugins.notify(me, 'afterInit');
+
+ return me;
+ },
+
+ clear: function() {
+ helpers$1.canvas.clear(this);
+ return this;
+ },
+
+ stop: function() {
+ // Stops any current animation loop occurring
+ core_animations.cancelAnimation(this);
+ return this;
+ },
+
+ resize: function(silent) {
+ var me = this;
+ var options = me.options;
+ var canvas = me.canvas;
+ var aspectRatio = (options.maintainAspectRatio && me.aspectRatio) || null;
+
+ // the canvas render width and height will be casted to integers so make sure that
+ // the canvas display style uses the same integer values to avoid blurring effect.
+
+ // Set to 0 instead of canvas.size because the size defaults to 300x150 if the element is collapsed
+ var newWidth = Math.max(0, Math.floor(helpers$1.getMaximumWidth(canvas)));
+ var newHeight = Math.max(0, Math.floor(aspectRatio ? newWidth / aspectRatio : helpers$1.getMaximumHeight(canvas)));
+
+ if (me.width === newWidth && me.height === newHeight) {
+ return;
+ }
+
+ canvas.width = me.width = newWidth;
+ canvas.height = me.height = newHeight;
+ canvas.style.width = newWidth + 'px';
+ canvas.style.height = newHeight + 'px';
+
+ helpers$1.retinaScale(me, options.devicePixelRatio);
+
+ if (!silent) {
+ // Notify any plugins about the resize
+ var newSize = {width: newWidth, height: newHeight};
+ core_plugins.notify(me, 'resize', [newSize]);
+
+ // Notify of resize
+ if (options.onResize) {
+ options.onResize(me, newSize);
+ }
+
+ me.stop();
+ me.update({
+ duration: options.responsiveAnimationDuration
+ });
+ }
+ },
+
+ ensureScalesHaveIDs: function() {
+ var options = this.options;
+ var scalesOptions = options.scales || {};
+ var scaleOptions = options.scale;
+
+ helpers$1.each(scalesOptions.xAxes, function(xAxisOptions, index) {
+ xAxisOptions.id = xAxisOptions.id || ('x-axis-' + index);
+ });
+
+ helpers$1.each(scalesOptions.yAxes, function(yAxisOptions, index) {
+ yAxisOptions.id = yAxisOptions.id || ('y-axis-' + index);
+ });
+
+ if (scaleOptions) {
+ scaleOptions.id = scaleOptions.id || 'scale';
+ }
+ },
+
+ /**
+ * Builds a map of scale ID to scale object for future lookup.
+ */
+ buildOrUpdateScales: function() {
+ var me = this;
+ var options = me.options;
+ var scales = me.scales || {};
+ var items = [];
+ var updated = Object.keys(scales).reduce(function(obj, id) {
+ obj[id] = false;
+ return obj;
+ }, {});
+
+ if (options.scales) {
+ items = items.concat(
+ (options.scales.xAxes || []).map(function(xAxisOptions) {
+ return {options: xAxisOptions, dtype: 'category', dposition: 'bottom'};
+ }),
+ (options.scales.yAxes || []).map(function(yAxisOptions) {
+ return {options: yAxisOptions, dtype: 'linear', dposition: 'left'};
+ })
+ );
+ }
+
+ if (options.scale) {
+ items.push({
+ options: options.scale,
+ dtype: 'radialLinear',
+ isDefault: true,
+ dposition: 'chartArea'
+ });
+ }
+
+ helpers$1.each(items, function(item) {
+ var scaleOptions = item.options;
+ var id = scaleOptions.id;
+ var scaleType = valueOrDefault$8(scaleOptions.type, item.dtype);
+
+ if (positionIsHorizontal(scaleOptions.position) !== positionIsHorizontal(item.dposition)) {
+ scaleOptions.position = item.dposition;
+ }
+
+ updated[id] = true;
+ var scale = null;
+ if (id in scales && scales[id].type === scaleType) {
+ scale = scales[id];
+ scale.options = scaleOptions;
+ scale.ctx = me.ctx;
+ scale.chart = me;
+ } else {
+ var scaleClass = core_scaleService.getScaleConstructor(scaleType);
+ if (!scaleClass) {
+ return;
+ }
+ scale = new scaleClass({
+ id: id,
+ type: scaleType,
+ options: scaleOptions,
+ ctx: me.ctx,
+ chart: me
+ });
+ scales[scale.id] = scale;
+ }
+
+ scale.mergeTicksOptions();
+
+ // TODO(SB): I think we should be able to remove this custom case (options.scale)
+ // and consider it as a regular scale part of the "scales"" map only! This would
+ // make the logic easier and remove some useless? custom code.
+ if (item.isDefault) {
+ me.scale = scale;
+ }
+ });
+ // clear up discarded scales
+ helpers$1.each(updated, function(hasUpdated, id) {
+ if (!hasUpdated) {
+ delete scales[id];
+ }
+ });
+
+ me.scales = scales;
+
+ core_scaleService.addScalesToLayout(this);
+ },
+
+ buildOrUpdateControllers: function() {
+ var me = this;
+ var newControllers = [];
+
+ helpers$1.each(me.data.datasets, function(dataset, datasetIndex) {
+ var meta = me.getDatasetMeta(datasetIndex);
+ var type = dataset.type || me.config.type;
+
+ if (meta.type && meta.type !== type) {
+ me.destroyDatasetMeta(datasetIndex);
+ meta = me.getDatasetMeta(datasetIndex);
+ }
+ meta.type = type;
+
+ if (meta.controller) {
+ meta.controller.updateIndex(datasetIndex);
+ meta.controller.linkScales();
+ } else {
+ var ControllerClass = controllers[meta.type];
+ if (ControllerClass === undefined) {
+ throw new Error('"' + meta.type + '" is not a chart type.');
+ }
+
+ meta.controller = new ControllerClass(me, datasetIndex);
+ newControllers.push(meta.controller);
+ }
+ }, me);
+
+ return newControllers;
+ },
+
+ /**
+ * Reset the elements of all datasets
+ * @private
+ */
+ resetElements: function() {
+ var me = this;
+ helpers$1.each(me.data.datasets, function(dataset, datasetIndex) {
+ me.getDatasetMeta(datasetIndex).controller.reset();
+ }, me);
+ },
+
+ /**
+ * Resets the chart back to it's state before the initial animation
+ */
+ reset: function() {
+ this.resetElements();
+ this.tooltip.initialize();
+ },
+
+ update: function(config) {
+ var me = this;
+
+ if (!config || typeof config !== 'object') {
+ // backwards compatibility
+ config = {
+ duration: config,
+ lazy: arguments[1]
+ };
+ }
+
+ updateConfig(me);
+
+ // plugins options references might have change, let's invalidate the cache
+ // https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
+ core_plugins._invalidate(me);
+
+ if (core_plugins.notify(me, 'beforeUpdate') === false) {
+ return;
+ }
+
+ // In case the entire data object changed
+ me.tooltip._data = me.data;
+
+ // Make sure dataset controllers are updated and new controllers are reset
+ var newControllers = me.buildOrUpdateControllers();
+
+ // Make sure all dataset controllers have correct meta data counts
+ helpers$1.each(me.data.datasets, function(dataset, datasetIndex) {
+ me.getDatasetMeta(datasetIndex).controller.buildOrUpdateElements();
+ }, me);
+
+ me.updateLayout();
+
+ // Can only reset the new controllers after the scales have been updated
+ if (me.options.animation && me.options.animation.duration) {
+ helpers$1.each(newControllers, function(controller) {
+ controller.reset();
+ });
+ }
+
+ me.updateDatasets();
+
+ // Need to reset tooltip in case it is displayed with elements that are removed
+ // after update.
+ me.tooltip.initialize();
+
+ // Last active contains items that were previously in the tooltip.
+ // When we reset the tooltip, we need to clear it
+ me.lastActive = [];
+
+ // Do this before render so that any plugins that need final scale updates can use it
+ core_plugins.notify(me, 'afterUpdate');
+
+ if (me._bufferedRender) {
+ me._bufferedRequest = {
+ duration: config.duration,
+ easing: config.easing,
+ lazy: config.lazy
+ };
+ } else {
+ me.render(config);
+ }
+ },
+
+ /**
+ * Updates the chart layout unless a plugin returns `false` to the `beforeLayout`
+ * hook, in which case, plugins will not be called on `afterLayout`.
+ * @private
+ */
+ updateLayout: function() {
+ var me = this;
+
+ if (core_plugins.notify(me, 'beforeLayout') === false) {
+ return;
+ }
+
+ core_layouts.update(this, this.width, this.height);
+
+ /**
+ * Provided for backward compatibility, use `afterLayout` instead.
+ * @method IPlugin#afterScaleUpdate
+ * @deprecated since version 2.5.0
+ * @todo remove at version 3
+ * @private
+ */
+ core_plugins.notify(me, 'afterScaleUpdate');
+ core_plugins.notify(me, 'afterLayout');
+ },
+
+ /**
+ * Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate`
+ * hook, in which case, plugins will not be called on `afterDatasetsUpdate`.
+ * @private
+ */
+ updateDatasets: function() {
+ var me = this;
+
+ if (core_plugins.notify(me, 'beforeDatasetsUpdate') === false) {
+ return;
+ }
+
+ for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
+ me.updateDataset(i);
+ }
+
+ core_plugins.notify(me, 'afterDatasetsUpdate');
+ },
+
+ /**
+ * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate`
+ * hook, in which case, plugins will not be called on `afterDatasetUpdate`.
+ * @private
+ */
+ updateDataset: function(index) {
+ var me = this;
+ var meta = me.getDatasetMeta(index);
+ var args = {
+ meta: meta,
+ index: index
+ };
+
+ if (core_plugins.notify(me, 'beforeDatasetUpdate', [args]) === false) {
+ return;
+ }
+
+ meta.controller.update();
+
+ core_plugins.notify(me, 'afterDatasetUpdate', [args]);
+ },
+
+ render: function(config) {
+ var me = this;
+
+ if (!config || typeof config !== 'object') {
+ // backwards compatibility
+ config = {
+ duration: config,
+ lazy: arguments[1]
+ };
+ }
+
+ var animationOptions = me.options.animation;
+ var duration = valueOrDefault$8(config.duration, animationOptions && animationOptions.duration);
+ var lazy = config.lazy;
+
+ if (core_plugins.notify(me, 'beforeRender') === false) {
+ return;
+ }
+
+ var onComplete = function(animation) {
+ core_plugins.notify(me, 'afterRender');
+ helpers$1.callback(animationOptions && animationOptions.onComplete, [animation], me);
+ };
+
+ if (animationOptions && duration) {
+ var animation = new core_animation({
+ numSteps: duration / 16.66, // 60 fps
+ easing: config.easing || animationOptions.easing,
+
+ render: function(chart, animationObject) {
+ var easingFunction = helpers$1.easing.effects[animationObject.easing];
+ var currentStep = animationObject.currentStep;
+ var stepDecimal = currentStep / animationObject.numSteps;
+
+ chart.draw(easingFunction(stepDecimal), stepDecimal, currentStep);
+ },
+
+ onAnimationProgress: animationOptions.onProgress,
+ onAnimationComplete: onComplete
+ });
+
+ core_animations.addAnimation(me, animation, duration, lazy);
+ } else {
+ me.draw();
+
+ // See https://github.com/chartjs/Chart.js/issues/3781
+ onComplete(new core_animation({numSteps: 0, chart: me}));
+ }
+
+ return me;
+ },
+
+ draw: function(easingValue) {
+ var me = this;
+
+ me.clear();
+
+ if (helpers$1.isNullOrUndef(easingValue)) {
+ easingValue = 1;
+ }
+
+ me.transition(easingValue);
+
+ if (me.width <= 0 || me.height <= 0) {
+ return;
+ }
+
+ if (core_plugins.notify(me, 'beforeDraw', [easingValue]) === false) {
+ return;
+ }
+
+ // Draw all the scales
+ helpers$1.each(me.boxes, function(box) {
+ box.draw(me.chartArea);
+ }, me);
+
+ me.drawDatasets(easingValue);
+ me._drawTooltip(easingValue);
+
+ core_plugins.notify(me, 'afterDraw', [easingValue]);
+ },
+
+ /**
+ * @private
+ */
+ transition: function(easingValue) {
+ var me = this;
+
+ for (var i = 0, ilen = (me.data.datasets || []).length; i < ilen; ++i) {
+ if (me.isDatasetVisible(i)) {
+ me.getDatasetMeta(i).controller.transition(easingValue);
+ }
+ }
+
+ me.tooltip.transition(easingValue);
+ },
+
+ /**
+ * Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw`
+ * hook, in which case, plugins will not be called on `afterDatasetsDraw`.
+ * @private
+ */
+ drawDatasets: function(easingValue) {
+ var me = this;
+
+ if (core_plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) {
+ return;
+ }
+
+ // Draw datasets reversed to support proper line stacking
+ for (var i = (me.data.datasets || []).length - 1; i >= 0; --i) {
+ if (me.isDatasetVisible(i)) {
+ me.drawDataset(i, easingValue);
+ }
+ }
+
+ core_plugins.notify(me, 'afterDatasetsDraw', [easingValue]);
+ },
+
+ /**
+ * Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw`
+ * hook, in which case, plugins will not be called on `afterDatasetDraw`.
+ * @private
+ */
+ drawDataset: function(index, easingValue) {
+ var me = this;
+ var meta = me.getDatasetMeta(index);
+ var args = {
+ meta: meta,
+ index: index,
+ easingValue: easingValue
+ };
+
+ if (core_plugins.notify(me, 'beforeDatasetDraw', [args]) === false) {
+ return;
+ }
+
+ meta.controller.draw(easingValue);
+
+ core_plugins.notify(me, 'afterDatasetDraw', [args]);
+ },
+
+ /**
+ * Draws tooltip unless a plugin returns `false` to the `beforeTooltipDraw`
+ * hook, in which case, plugins will not be called on `afterTooltipDraw`.
+ * @private
+ */
+ _drawTooltip: function(easingValue) {
+ var me = this;
+ var tooltip = me.tooltip;
+ var args = {
+ tooltip: tooltip,
+ easingValue: easingValue
+ };
+
+ if (core_plugins.notify(me, 'beforeTooltipDraw', [args]) === false) {
+ return;
+ }
+
+ tooltip.draw();
+
+ core_plugins.notify(me, 'afterTooltipDraw', [args]);
+ },
+
+ /**
+ * Get the single element that was clicked on
+ * @return An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw
+ */
+ getElementAtEvent: function(e) {
+ return core_interaction.modes.single(this, e);
+ },
+
+ getElementsAtEvent: function(e) {
+ return core_interaction.modes.label(this, e, {intersect: true});
+ },
+
+ getElementsAtXAxis: function(e) {
+ return core_interaction.modes['x-axis'](this, e, {intersect: true});
+ },
+
+ getElementsAtEventForMode: function(e, mode, options) {
+ var method = core_interaction.modes[mode];
+ if (typeof method === 'function') {
+ return method(this, e, options);
+ }
+
+ return [];
+ },
+
+ getDatasetAtEvent: function(e) {
+ return core_interaction.modes.dataset(this, e, {intersect: true});
+ },
+
+ getDatasetMeta: function(datasetIndex) {
+ var me = this;
+ var dataset = me.data.datasets[datasetIndex];
+ if (!dataset._meta) {
+ dataset._meta = {};
+ }
+
+ var meta = dataset._meta[me.id];
+ if (!meta) {
+ meta = dataset._meta[me.id] = {
+ type: null,
+ data: [],
+ dataset: null,
+ controller: null,
+ hidden: null, // See isDatasetVisible() comment
+ xAxisID: null,
+ yAxisID: null
+ };
+ }
+
+ return meta;
+ },
+
+ getVisibleDatasetCount: function() {
+ var count = 0;
+ for (var i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {
+ if (this.isDatasetVisible(i)) {
+ count++;
+ }
+ }
+ return count;
+ },
+
+ isDatasetVisible: function(datasetIndex) {
+ var meta = this.getDatasetMeta(datasetIndex);
+
+ // meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false,
+ // the dataset.hidden value is ignored, else if null, the dataset hidden state is returned.
+ return typeof meta.hidden === 'boolean' ? !meta.hidden : !this.data.datasets[datasetIndex].hidden;
+ },
+
+ generateLegend: function() {
+ return this.options.legendCallback(this);
+ },
+
+ /**
+ * @private
+ */
+ destroyDatasetMeta: function(datasetIndex) {
+ var id = this.id;
+ var dataset = this.data.datasets[datasetIndex];
+ var meta = dataset._meta && dataset._meta[id];
+
+ if (meta) {
+ meta.controller.destroy();
+ delete dataset._meta[id];
+ }
+ },
+
+ destroy: function() {
+ var me = this;
+ var canvas = me.canvas;
+ var i, ilen;
+
+ me.stop();
+
+ // dataset controllers need to cleanup associated data
+ for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
+ me.destroyDatasetMeta(i);
+ }
+
+ if (canvas) {
+ me.unbindEvents();
+ helpers$1.canvas.clear(me);
+ platform.releaseContext(me.ctx);
+ me.canvas = null;
+ me.ctx = null;
+ }
+
+ core_plugins.notify(me, 'destroy');
+
+ delete Chart.instances[me.id];
+ },
+
+ toBase64Image: function() {
+ return this.canvas.toDataURL.apply(this.canvas, arguments);
+ },
+
+ initToolTip: function() {
+ var me = this;
+ me.tooltip = new core_tooltip({
+ _chart: me,
+ _chartInstance: me, // deprecated, backward compatibility
+ _data: me.data,
+ _options: me.options.tooltips
+ }, me);
+ },
+
+ /**
+ * @private
+ */
+ bindEvents: function() {
+ var me = this;
+ var listeners = me._listeners = {};
+ var listener = function() {
+ me.eventHandler.apply(me, arguments);
+ };
+
+ helpers$1.each(me.options.events, function(type) {
+ platform.addEventListener(me, type, listener);
+ listeners[type] = listener;
+ });
+
+ // Elements used to detect size change should not be injected for non responsive charts.
+ // See https://github.com/chartjs/Chart.js/issues/2210
+ if (me.options.responsive) {
+ listener = function() {
+ me.resize();
+ };
+
+ platform.addEventListener(me, 'resize', listener);
+ listeners.resize = listener;
+ }
+ },
+
+ /**
+ * @private
+ */
+ unbindEvents: function() {
+ var me = this;
+ var listeners = me._listeners;
+ if (!listeners) {
+ return;
+ }
+
+ delete me._listeners;
+ helpers$1.each(listeners, function(listener, type) {
+ platform.removeEventListener(me, type, listener);
+ });
+ },
+
+ updateHoverStyle: function(elements, mode, enabled) {
+ var method = enabled ? 'setHoverStyle' : 'removeHoverStyle';
+ var element, i, ilen;
+
+ for (i = 0, ilen = elements.length; i < ilen; ++i) {
+ element = elements[i];
+ if (element) {
+ this.getDatasetMeta(element._datasetIndex).controller[method](element);
+ }
+ }
+ },
+
+ /**
+ * @private
+ */
+ eventHandler: function(e) {
+ var me = this;
+ var tooltip = me.tooltip;
+
+ if (core_plugins.notify(me, 'beforeEvent', [e]) === false) {
+ return;
+ }
+
+ // Buffer any update calls so that renders do not occur
+ me._bufferedRender = true;
+ me._bufferedRequest = null;
+
+ var changed = me.handleEvent(e);
+ // for smooth tooltip animations issue #4989
+ // the tooltip should be the source of change
+ // Animation check workaround:
+ // tooltip._start will be null when tooltip isn't animating
+ if (tooltip) {
+ changed = tooltip._start
+ ? tooltip.handleEvent(e)
+ : changed | tooltip.handleEvent(e);
+ }
+
+ core_plugins.notify(me, 'afterEvent', [e]);
+
+ var bufferedRequest = me._bufferedRequest;
+ if (bufferedRequest) {
+ // If we have an update that was triggered, we need to do a normal render
+ me.render(bufferedRequest);
+ } else if (changed && !me.animating) {
+ // If entering, leaving, or changing elements, animate the change via pivot
+ me.stop();
+
+ // We only need to render at this point. Updating will cause scales to be
+ // recomputed generating flicker & using more memory than necessary.
+ me.render({
+ duration: me.options.hover.animationDuration,
+ lazy: true
+ });
+ }
+
+ me._bufferedRender = false;
+ me._bufferedRequest = null;
+
+ return me;
+ },
+
+ /**
+ * Handle an event
+ * @private
+ * @param {IEvent} event the event to handle
+ * @return {boolean} true if the chart needs to re-render
+ */
+ handleEvent: function(e) {
+ var me = this;
+ var options = me.options || {};
+ var hoverOptions = options.hover;
+ var changed = false;
+
+ me.lastActive = me.lastActive || [];
+
+ // Find Active Elements for hover and tooltips
+ if (e.type === 'mouseout') {
+ me.active = [];
+ } else {
+ me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions);
+ }
+
+ // Invoke onHover hook
+ // Need to call with native event here to not break backwards compatibility
+ helpers$1.callback(options.onHover || options.hover.onHover, [e.native, me.active], me);
+
+ if (e.type === 'mouseup' || e.type === 'click') {
+ if (options.onClick) {
+ // Use e.native here for backwards compatibility
+ options.onClick.call(me, e.native, me.active);
+ }
+ }
+
+ // Remove styling for last active (even if it may still be active)
+ if (me.lastActive.length) {
+ me.updateHoverStyle(me.lastActive, hoverOptions.mode, false);
+ }
+
+ // Built in hover styling
+ if (me.active.length && hoverOptions.mode) {
+ me.updateHoverStyle(me.active, hoverOptions.mode, true);
+ }
+
+ changed = !helpers$1.arrayEquals(me.active, me.lastActive);
+
+ // Remember Last Actives
+ me.lastActive = me.active;
+
+ return changed;
+ }
+});
+
+/**
+ * NOTE(SB) We actually don't use this container anymore but we need to keep it
+ * for backward compatibility. Though, it can still be useful for plugins that
+ * would need to work on multiple charts?!
+ */
+Chart.instances = {};
+
+var core_controller = Chart;
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart instead.
+ * @class Chart.Controller
+ * @deprecated since version 2.6
+ * @todo remove at version 3
+ * @private
+ */
+Chart.Controller = Chart;
+
+/**
+ * Provided for backward compatibility, not available anymore.
+ * @namespace Chart
+ * @deprecated since version 2.8
+ * @todo remove at version 3
+ * @private
+ */
+Chart.types = {};
+
+/**
+ * Provided for backward compatibility, not available anymore.
+ * @namespace Chart.helpers.configMerge
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers$1.configMerge = mergeConfig;
+
+/**
+ * Provided for backward compatibility, not available anymore.
+ * @namespace Chart.helpers.scaleMerge
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers$1.scaleMerge = mergeScaleConfig;
+
+var core_helpers = function() {
+
+ // -- Basic js utility methods
+
+ helpers$1.where = function(collection, filterCallback) {
+ if (helpers$1.isArray(collection) && Array.prototype.filter) {
+ return collection.filter(filterCallback);
+ }
+ var filtered = [];
+
+ helpers$1.each(collection, function(item) {
+ if (filterCallback(item)) {
+ filtered.push(item);
+ }
+ });
+
+ return filtered;
+ };
+ helpers$1.findIndex = Array.prototype.findIndex ?
+ function(array, callback, scope) {
+ return array.findIndex(callback, scope);
+ } :
+ function(array, callback, scope) {
+ scope = scope === undefined ? array : scope;
+ for (var i = 0, ilen = array.length; i < ilen; ++i) {
+ if (callback.call(scope, array[i], i, array)) {
+ return i;
+ }
+ }
+ return -1;
+ };
+ helpers$1.findNextWhere = function(arrayToSearch, filterCallback, startIndex) {
+ // Default to start of the array
+ if (helpers$1.isNullOrUndef(startIndex)) {
+ startIndex = -1;
+ }
+ for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
+ var currentItem = arrayToSearch[i];
+ if (filterCallback(currentItem)) {
+ return currentItem;
+ }
+ }
+ };
+ helpers$1.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) {
+ // Default to end of the array
+ if (helpers$1.isNullOrUndef(startIndex)) {
+ startIndex = arrayToSearch.length;
+ }
+ for (var i = startIndex - 1; i >= 0; i--) {
+ var currentItem = arrayToSearch[i];
+ if (filterCallback(currentItem)) {
+ return currentItem;
+ }
+ }
+ };
+
+ // -- Math methods
+ helpers$1.isNumber = function(n) {
+ return !isNaN(parseFloat(n)) && isFinite(n);
+ };
+ helpers$1.almostEquals = function(x, y, epsilon) {
+ return Math.abs(x - y) < epsilon;
+ };
+ helpers$1.almostWhole = function(x, epsilon) {
+ var rounded = Math.round(x);
+ return (((rounded - epsilon) < x) && ((rounded + epsilon) > x));
+ };
+ helpers$1.max = function(array) {
+ return array.reduce(function(max, value) {
+ if (!isNaN(value)) {
+ return Math.max(max, value);
+ }
+ return max;
+ }, Number.NEGATIVE_INFINITY);
+ };
+ helpers$1.min = function(array) {
+ return array.reduce(function(min, value) {
+ if (!isNaN(value)) {
+ return Math.min(min, value);
+ }
+ return min;
+ }, Number.POSITIVE_INFINITY);
+ };
+ helpers$1.sign = Math.sign ?
+ function(x) {
+ return Math.sign(x);
+ } :
+ function(x) {
+ x = +x; // convert to a number
+ if (x === 0 || isNaN(x)) {
+ return x;
+ }
+ return x > 0 ? 1 : -1;
+ };
+ helpers$1.log10 = Math.log10 ?
+ function(x) {
+ return Math.log10(x);
+ } :
+ function(x) {
+ var exponent = Math.log(x) * Math.LOG10E; // Math.LOG10E = 1 / Math.LN10.
+ // Check for whole powers of 10,
+ // which due to floating point rounding error should be corrected.
+ var powerOf10 = Math.round(exponent);
+ var isPowerOf10 = x === Math.pow(10, powerOf10);
+
+ return isPowerOf10 ? powerOf10 : exponent;
+ };
+ helpers$1.toRadians = function(degrees) {
+ return degrees * (Math.PI / 180);
+ };
+ helpers$1.toDegrees = function(radians) {
+ return radians * (180 / Math.PI);
+ };
+
+ /**
+ * Returns the number of decimal places
+ * i.e. the number of digits after the decimal point, of the value of this Number.
+ * @param {number} x - A number.
+ * @returns {number} The number of decimal places.
+ * @private
+ */
+ helpers$1._decimalPlaces = function(x) {
+ if (!helpers$1.isFinite(x)) {
+ return;
+ }
+ var e = 1;
+ var p = 0;
+ while (Math.round(x * e) / e !== x) {
+ e *= 10;
+ p++;
+ }
+ return p;
+ };
+
+ // Gets the angle from vertical upright to the point about a centre.
+ helpers$1.getAngleFromPoint = function(centrePoint, anglePoint) {
+ var distanceFromXCenter = anglePoint.x - centrePoint.x;
+ var distanceFromYCenter = anglePoint.y - centrePoint.y;
+ var radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
+
+ var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);
+
+ if (angle < (-0.5 * Math.PI)) {
+ angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2]
+ }
+
+ return {
+ angle: angle,
+ distance: radialDistanceFromCenter
+ };
+ };
+ helpers$1.distanceBetweenPoints = function(pt1, pt2) {
+ return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2));
+ };
+
+ /**
+ * Provided for backward compatibility, not available anymore
+ * @function Chart.helpers.aliasPixel
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ */
+ helpers$1.aliasPixel = function(pixelWidth) {
+ return (pixelWidth % 2 === 0) ? 0 : 0.5;
+ };
+
+ /**
+ * Returns the aligned pixel value to avoid anti-aliasing blur
+ * @param {Chart} chart - The chart instance.
+ * @param {number} pixel - A pixel value.
+ * @param {number} width - The width of the element.
+ * @returns {number} The aligned pixel value.
+ * @private
+ */
+ helpers$1._alignPixel = function(chart, pixel, width) {
+ var devicePixelRatio = chart.currentDevicePixelRatio;
+ var halfWidth = width / 2;
+ return Math.round((pixel - halfWidth) * devicePixelRatio) / devicePixelRatio + halfWidth;
+ };
+
+ helpers$1.splineCurve = function(firstPoint, middlePoint, afterPoint, t) {
+ // Props to Rob Spencer at scaled innovation for his post on splining between points
+ // http://scaledinnovation.com/analytics/splines/aboutSplines.html
+
+ // This function must also respect "skipped" points
+
+ var previous = firstPoint.skip ? middlePoint : firstPoint;
+ var current = middlePoint;
+ var next = afterPoint.skip ? middlePoint : afterPoint;
+
+ var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2));
+ var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2));
+
+ var s01 = d01 / (d01 + d12);
+ var s12 = d12 / (d01 + d12);
+
+ // If all points are the same, s01 & s02 will be inf
+ s01 = isNaN(s01) ? 0 : s01;
+ s12 = isNaN(s12) ? 0 : s12;
+
+ var fa = t * s01; // scaling factor for triangle Ta
+ var fb = t * s12;
+
+ return {
+ previous: {
+ x: current.x - fa * (next.x - previous.x),
+ y: current.y - fa * (next.y - previous.y)
+ },
+ next: {
+ x: current.x + fb * (next.x - previous.x),
+ y: current.y + fb * (next.y - previous.y)
+ }
+ };
+ };
+ helpers$1.EPSILON = Number.EPSILON || 1e-14;
+ helpers$1.splineCurveMonotone = function(points) {
+ // This function calculates Bézier control points in a similar way than |splineCurve|,
+ // but preserves monotonicity of the provided data and ensures no local extremums are added
+ // between the dataset discrete points due to the interpolation.
+ // See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation
+
+ var pointsWithTangents = (points || []).map(function(point) {
+ return {
+ model: point._model,
+ deltaK: 0,
+ mK: 0
+ };
+ });
+
+ // Calculate slopes (deltaK) and initialize tangents (mK)
+ var pointsLen = pointsWithTangents.length;
+ var i, pointBefore, pointCurrent, pointAfter;
+ for (i = 0; i < pointsLen; ++i) {
+ pointCurrent = pointsWithTangents[i];
+ if (pointCurrent.model.skip) {
+ continue;
+ }
+
+ pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
+ pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
+ if (pointAfter && !pointAfter.model.skip) {
+ var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x);
+
+ // In the case of two points that appear at the same x pixel, slopeDeltaX is 0
+ pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0;
+ }
+
+ if (!pointBefore || pointBefore.model.skip) {
+ pointCurrent.mK = pointCurrent.deltaK;
+ } else if (!pointAfter || pointAfter.model.skip) {
+ pointCurrent.mK = pointBefore.deltaK;
+ } else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) {
+ pointCurrent.mK = 0;
+ } else {
+ pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2;
+ }
+ }
+
+ // Adjust tangents to ensure monotonic properties
+ var alphaK, betaK, tauK, squaredMagnitude;
+ for (i = 0; i < pointsLen - 1; ++i) {
+ pointCurrent = pointsWithTangents[i];
+ pointAfter = pointsWithTangents[i + 1];
+ if (pointCurrent.model.skip || pointAfter.model.skip) {
+ continue;
+ }
+
+ if (helpers$1.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) {
+ pointCurrent.mK = pointAfter.mK = 0;
+ continue;
+ }
+
+ alphaK = pointCurrent.mK / pointCurrent.deltaK;
+ betaK = pointAfter.mK / pointCurrent.deltaK;
+ squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2);
+ if (squaredMagnitude <= 9) {
+ continue;
+ }
+
+ tauK = 3 / Math.sqrt(squaredMagnitude);
+ pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK;
+ pointAfter.mK = betaK * tauK * pointCurrent.deltaK;
+ }
+
+ // Compute control points
+ var deltaX;
+ for (i = 0; i < pointsLen; ++i) {
+ pointCurrent = pointsWithTangents[i];
+ if (pointCurrent.model.skip) {
+ continue;
+ }
+
+ pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
+ pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
+ if (pointBefore && !pointBefore.model.skip) {
+ deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3;
+ pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX;
+ pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK;
+ }
+ if (pointAfter && !pointAfter.model.skip) {
+ deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3;
+ pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX;
+ pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK;
+ }
+ }
+ };
+ helpers$1.nextItem = function(collection, index, loop) {
+ if (loop) {
+ return index >= collection.length - 1 ? collection[0] : collection[index + 1];
+ }
+ return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1];
+ };
+ helpers$1.previousItem = function(collection, index, loop) {
+ if (loop) {
+ return index <= 0 ? collection[collection.length - 1] : collection[index - 1];
+ }
+ return index <= 0 ? collection[0] : collection[index - 1];
+ };
+ // Implementation of the nice number algorithm used in determining where axis labels will go
+ helpers$1.niceNum = function(range, round) {
+ var exponent = Math.floor(helpers$1.log10(range));
+ var fraction = range / Math.pow(10, exponent);
+ var niceFraction;
+
+ if (round) {
+ if (fraction < 1.5) {
+ niceFraction = 1;
+ } else if (fraction < 3) {
+ niceFraction = 2;
+ } else if (fraction < 7) {
+ niceFraction = 5;
+ } else {
+ niceFraction = 10;
+ }
+ } else if (fraction <= 1.0) {
+ niceFraction = 1;
+ } else if (fraction <= 2) {
+ niceFraction = 2;
+ } else if (fraction <= 5) {
+ niceFraction = 5;
+ } else {
+ niceFraction = 10;
+ }
+
+ return niceFraction * Math.pow(10, exponent);
+ };
+ // Request animation polyfill - https://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
+ helpers$1.requestAnimFrame = (function() {
+ if (typeof window === 'undefined') {
+ return function(callback) {
+ callback();
+ };
+ }
+ return window.requestAnimationFrame ||
+ window.webkitRequestAnimationFrame ||
+ window.mozRequestAnimationFrame ||
+ window.oRequestAnimationFrame ||
+ window.msRequestAnimationFrame ||
+ function(callback) {
+ return window.setTimeout(callback, 1000 / 60);
+ };
+ }());
+ // -- DOM methods
+ helpers$1.getRelativePosition = function(evt, chart) {
+ var mouseX, mouseY;
+ var e = evt.originalEvent || evt;
+ var canvas = evt.target || evt.srcElement;
+ var boundingRect = canvas.getBoundingClientRect();
+
+ var touches = e.touches;
+ if (touches && touches.length > 0) {
+ mouseX = touches[0].clientX;
+ mouseY = touches[0].clientY;
+
+ } else {
+ mouseX = e.clientX;
+ mouseY = e.clientY;
+ }
+
+ // Scale mouse coordinates into canvas coordinates
+ // by following the pattern laid out by 'jerryj' in the comments of
+ // https://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/
+ var paddingLeft = parseFloat(helpers$1.getStyle(canvas, 'padding-left'));
+ var paddingTop = parseFloat(helpers$1.getStyle(canvas, 'padding-top'));
+ var paddingRight = parseFloat(helpers$1.getStyle(canvas, 'padding-right'));
+ var paddingBottom = parseFloat(helpers$1.getStyle(canvas, 'padding-bottom'));
+ var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight;
+ var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom;
+
+ // We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However
+ // the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here
+ mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio);
+ mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio);
+
+ return {
+ x: mouseX,
+ y: mouseY
+ };
+
+ };
+
+ // Private helper function to convert max-width/max-height values that may be percentages into a number
+ function parseMaxStyle(styleValue, node, parentProperty) {
+ var valueInPixels;
+ if (typeof styleValue === 'string') {
+ valueInPixels = parseInt(styleValue, 10);
+
+ if (styleValue.indexOf('%') !== -1) {
+ // percentage * size in dimension
+ valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
+ }
+ } else {
+ valueInPixels = styleValue;
+ }
+
+ return valueInPixels;
+ }
+
+ /**
+ * Returns if the given value contains an effective constraint.
+ * @private
+ */
+ function isConstrainedValue(value) {
+ return value !== undefined && value !== null && value !== 'none';
+ }
+
+ /**
+ * Returns the max width or height of the given DOM node in a cross-browser compatible fashion
+ * @param {HTMLElement} domNode - the node to check the constraint on
+ * @param {string} maxStyle - the style that defines the maximum for the direction we are using ('max-width' / 'max-height')
+ * @param {string} percentageProperty - property of parent to use when calculating width as a percentage
+ * @see {@link https://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser}
+ */
+ function getConstraintDimension(domNode, maxStyle, percentageProperty) {
+ var view = document.defaultView;
+ var parentNode = helpers$1._getParentNode(domNode);
+ var constrainedNode = view.getComputedStyle(domNode)[maxStyle];
+ var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle];
+ var hasCNode = isConstrainedValue(constrainedNode);
+ var hasCContainer = isConstrainedValue(constrainedContainer);
+ var infinity = Number.POSITIVE_INFINITY;
+
+ if (hasCNode || hasCContainer) {
+ return Math.min(
+ hasCNode ? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity,
+ hasCContainer ? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity);
+ }
+
+ return 'none';
+ }
+ // returns Number or undefined if no constraint
+ helpers$1.getConstraintWidth = function(domNode) {
+ return getConstraintDimension(domNode, 'max-width', 'clientWidth');
+ };
+ // returns Number or undefined if no constraint
+ helpers$1.getConstraintHeight = function(domNode) {
+ return getConstraintDimension(domNode, 'max-height', 'clientHeight');
+ };
+ /**
+ * @private
+ */
+ helpers$1._calculatePadding = function(container, padding, parentDimension) {
+ padding = helpers$1.getStyle(container, padding);
+
+ return padding.indexOf('%') > -1 ? parentDimension * parseInt(padding, 10) / 100 : parseInt(padding, 10);
+ };
+ /**
+ * @private
+ */
+ helpers$1._getParentNode = function(domNode) {
+ var parent = domNode.parentNode;
+ if (parent && parent.toString() === '[object ShadowRoot]') {
+ parent = parent.host;
+ }
+ return parent;
+ };
+ helpers$1.getMaximumWidth = function(domNode) {
+ var container = helpers$1._getParentNode(domNode);
+ if (!container) {
+ return domNode.clientWidth;
+ }
+
+ var clientWidth = container.clientWidth;
+ var paddingLeft = helpers$1._calculatePadding(container, 'padding-left', clientWidth);
+ var paddingRight = helpers$1._calculatePadding(container, 'padding-right', clientWidth);
+
+ var w = clientWidth - paddingLeft - paddingRight;
+ var cw = helpers$1.getConstraintWidth(domNode);
+ return isNaN(cw) ? w : Math.min(w, cw);
+ };
+ helpers$1.getMaximumHeight = function(domNode) {
+ var container = helpers$1._getParentNode(domNode);
+ if (!container) {
+ return domNode.clientHeight;
+ }
+
+ var clientHeight = container.clientHeight;
+ var paddingTop = helpers$1._calculatePadding(container, 'padding-top', clientHeight);
+ var paddingBottom = helpers$1._calculatePadding(container, 'padding-bottom', clientHeight);
+
+ var h = clientHeight - paddingTop - paddingBottom;
+ var ch = helpers$1.getConstraintHeight(domNode);
+ return isNaN(ch) ? h : Math.min(h, ch);
+ };
+ helpers$1.getStyle = function(el, property) {
+ return el.currentStyle ?
+ el.currentStyle[property] :
+ document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
+ };
+ helpers$1.retinaScale = function(chart, forceRatio) {
+ var pixelRatio = chart.currentDevicePixelRatio = forceRatio || (typeof window !== 'undefined' && window.devicePixelRatio) || 1;
+ if (pixelRatio === 1) {
+ return;
+ }
+
+ var canvas = chart.canvas;
+ var height = chart.height;
+ var width = chart.width;
+
+ canvas.height = height * pixelRatio;
+ canvas.width = width * pixelRatio;
+ chart.ctx.scale(pixelRatio, pixelRatio);
+
+ // If no style has been set on the canvas, the render size is used as display size,
+ // making the chart visually bigger, so let's enforce it to the "correct" values.
+ // See https://github.com/chartjs/Chart.js/issues/3575
+ if (!canvas.style.height && !canvas.style.width) {
+ canvas.style.height = height + 'px';
+ canvas.style.width = width + 'px';
+ }
+ };
+ // -- Canvas methods
+ helpers$1.fontString = function(pixelSize, fontStyle, fontFamily) {
+ return fontStyle + ' ' + pixelSize + 'px ' + fontFamily;
+ };
+ helpers$1.longestText = function(ctx, font, arrayOfThings, cache) {
+ cache = cache || {};
+ var data = cache.data = cache.data || {};
+ var gc = cache.garbageCollect = cache.garbageCollect || [];
+
+ if (cache.font !== font) {
+ data = cache.data = {};
+ gc = cache.garbageCollect = [];
+ cache.font = font;
+ }
+
+ ctx.font = font;
+ var longest = 0;
+ helpers$1.each(arrayOfThings, function(thing) {
+ // Undefined strings and arrays should not be measured
+ if (thing !== undefined && thing !== null && helpers$1.isArray(thing) !== true) {
+ longest = helpers$1.measureText(ctx, data, gc, longest, thing);
+ } else if (helpers$1.isArray(thing)) {
+ // if it is an array lets measure each element
+ // to do maybe simplify this function a bit so we can do this more recursively?
+ helpers$1.each(thing, function(nestedThing) {
+ // Undefined strings and arrays should not be measured
+ if (nestedThing !== undefined && nestedThing !== null && !helpers$1.isArray(nestedThing)) {
+ longest = helpers$1.measureText(ctx, data, gc, longest, nestedThing);
+ }
+ });
+ }
+ });
+
+ var gcLen = gc.length / 2;
+ if (gcLen > arrayOfThings.length) {
+ for (var i = 0; i < gcLen; i++) {
+ delete data[gc[i]];
+ }
+ gc.splice(0, gcLen);
+ }
+ return longest;
+ };
+ helpers$1.measureText = function(ctx, data, gc, longest, string) {
+ var textWidth = data[string];
+ if (!textWidth) {
+ textWidth = data[string] = ctx.measureText(string).width;
+ gc.push(string);
+ }
+ if (textWidth > longest) {
+ longest = textWidth;
+ }
+ return longest;
+ };
+ helpers$1.numberOfLabelLines = function(arrayOfThings) {
+ var numberOfLines = 1;
+ helpers$1.each(arrayOfThings, function(thing) {
+ if (helpers$1.isArray(thing)) {
+ if (thing.length > numberOfLines) {
+ numberOfLines = thing.length;
+ }
+ }
+ });
+ return numberOfLines;
+ };
+
+ helpers$1.color = !chartjsColor ?
+ function(value) {
+ console.error('Color.js not found!');
+ return value;
+ } :
+ function(value) {
+ /* global CanvasGradient */
+ if (value instanceof CanvasGradient) {
+ value = core_defaults.global.defaultColor;
+ }
+
+ return chartjsColor(value);
+ };
+
+ helpers$1.getHoverColor = function(colorValue) {
+ /* global CanvasPattern */
+ return (colorValue instanceof CanvasPattern || colorValue instanceof CanvasGradient) ?
+ colorValue :
+ helpers$1.color(colorValue).saturate(0.5).darken(0.1).rgbString();
+ };
+};
+
+function abstract() {
+ throw new Error(
+ 'This method is not implemented: either no adapter can ' +
+ 'be found or an incomplete integration was provided.'
+ );
+}
+
+/**
+ * Date adapter (current used by the time scale)
+ * @namespace Chart._adapters._date
+ * @memberof Chart._adapters
+ * @private
+ */
+
+/**
+ * Currently supported unit string values.
+ * @typedef {('millisecond'|'second'|'minute'|'hour'|'day'|'week'|'month'|'quarter'|'year')}
+ * @memberof Chart._adapters._date
+ * @name Unit
+ */
+
+/**
+ * @class
+ */
+function DateAdapter(options) {
+ this.options = options || {};
+}
+
+helpers$1.extend(DateAdapter.prototype, /** @lends DateAdapter */ {
+ /**
+ * Returns a map of time formats for the supported formatting units defined
+ * in Unit as well as 'datetime' representing a detailed date/time string.
+ * @returns {{string: string}}
+ */
+ formats: abstract,
+
+ /**
+ * Parses the given `value` and return the associated timestamp.
+ * @param {any} value - the value to parse (usually comes from the data)
+ * @param {string} [format] - the expected data format
+ * @returns {(number|null)}
+ * @function
+ */
+ parse: abstract,
+
+ /**
+ * Returns the formatted date in the specified `format` for a given `timestamp`.
+ * @param {number} timestamp - the timestamp to format
+ * @param {string} format - the date/time token
+ * @return {string}
+ * @function
+ */
+ format: abstract,
+
+ /**
+ * Adds the specified `amount` of `unit` to the given `timestamp`.
+ * @param {number} timestamp - the input timestamp
+ * @param {number} amount - the amount to add
+ * @param {Unit} unit - the unit as string
+ * @return {number}
+ * @function
+ */
+ add: abstract,
+
+ /**
+ * Returns the number of `unit` between the given timestamps.
+ * @param {number} max - the input timestamp (reference)
+ * @param {number} min - the timestamp to substract
+ * @param {Unit} unit - the unit as string
+ * @return {number}
+ * @function
+ */
+ diff: abstract,
+
+ /**
+ * Returns start of `unit` for the given `timestamp`.
+ * @param {number} timestamp - the input timestamp
+ * @param {Unit} unit - the unit as string
+ * @param {number} [weekday] - the ISO day of the week with 1 being Monday
+ * and 7 being Sunday (only needed if param *unit* is `isoWeek`).
+ * @function
+ */
+ startOf: abstract,
+
+ /**
+ * Returns end of `unit` for the given `timestamp`.
+ * @param {number} timestamp - the input timestamp
+ * @param {Unit} unit - the unit as string
+ * @function
+ */
+ endOf: abstract,
+
+ // DEPRECATIONS
+
+ /**
+ * Provided for backward compatibility for scale.getValueForPixel(),
+ * this method should be overridden only by the moment adapter.
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+ _create: function(value) {
+ return value;
+ }
+});
+
+DateAdapter.override = function(members) {
+ helpers$1.extend(DateAdapter.prototype, members);
+};
+
+var _date = DateAdapter;
+
+var core_adapters = {
+ _date: _date
+};
+
+/**
+ * Namespace to hold static tick generation functions
+ * @namespace Chart.Ticks
+ */
+var core_ticks = {
+ /**
+ * Namespace to hold formatters for different types of ticks
+ * @namespace Chart.Ticks.formatters
+ */
+ formatters: {
+ /**
+ * Formatter for value labels
+ * @method Chart.Ticks.formatters.values
+ * @param value the value to display
+ * @return {string|string[]} the label to display
+ */
+ values: function(value) {
+ return helpers$1.isArray(value) ? value : '' + value;
+ },
+
+ /**
+ * Formatter for linear numeric ticks
+ * @method Chart.Ticks.formatters.linear
+ * @param tickValue {number} the value to be formatted
+ * @param index {number} the position of the tickValue parameter in the ticks array
+ * @param ticks {number[]} the list of ticks being converted
+ * @return {string} string representation of the tickValue parameter
+ */
+ linear: function(tickValue, index, ticks) {
+ // If we have lots of ticks, don't use the ones
+ var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0];
+
+ // If we have a number like 2.5 as the delta, figure out how many decimal places we need
+ if (Math.abs(delta) > 1) {
+ if (tickValue !== Math.floor(tickValue)) {
+ // not an integer
+ delta = tickValue - Math.floor(tickValue);
+ }
+ }
+
+ var logDelta = helpers$1.log10(Math.abs(delta));
+ var tickString = '';
+
+ if (tickValue !== 0) {
+ var maxTick = Math.max(Math.abs(ticks[0]), Math.abs(ticks[ticks.length - 1]));
+ if (maxTick < 1e-4) { // all ticks are small numbers; use scientific notation
+ var logTick = helpers$1.log10(Math.abs(tickValue));
+ tickString = tickValue.toExponential(Math.floor(logTick) - Math.floor(logDelta));
+ } else {
+ var numDecimal = -1 * Math.floor(logDelta);
+ numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places
+ tickString = tickValue.toFixed(numDecimal);
+ }
+ } else {
+ tickString = '0'; // never show decimal places for 0
+ }
+
+ return tickString;
+ },
+
+ logarithmic: function(tickValue, index, ticks) {
+ var remain = tickValue / (Math.pow(10, Math.floor(helpers$1.log10(tickValue))));
+
+ if (tickValue === 0) {
+ return '0';
+ } else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) {
+ return tickValue.toExponential();
+ }
+ return '';
+ }
+ }
+};
+
+var valueOrDefault$9 = helpers$1.valueOrDefault;
+var valueAtIndexOrDefault = helpers$1.valueAtIndexOrDefault;
+
+core_defaults._set('scale', {
+ display: true,
+ position: 'left',
+ offset: false,
+
+ // grid line settings
+ gridLines: {
+ display: true,
+ color: 'rgba(0, 0, 0, 0.1)',
+ lineWidth: 1,
+ drawBorder: true,
+ drawOnChartArea: true,
+ drawTicks: true,
+ tickMarkLength: 10,
+ zeroLineWidth: 1,
+ zeroLineColor: 'rgba(0,0,0,0.25)',
+ zeroLineBorderDash: [],
+ zeroLineBorderDashOffset: 0.0,
+ offsetGridLines: false,
+ borderDash: [],
+ borderDashOffset: 0.0
+ },
+
+ // scale label
+ scaleLabel: {
+ // display property
+ display: false,
+
+ // actual label
+ labelString: '',
+
+ // top/bottom padding
+ padding: {
+ top: 4,
+ bottom: 4
+ }
+ },
+
+ // label settings
+ ticks: {
+ beginAtZero: false,
+ minRotation: 0,
+ maxRotation: 50,
+ mirror: false,
+ padding: 0,
+ reverse: false,
+ display: true,
+ autoSkip: true,
+ autoSkipPadding: 0,
+ labelOffset: 0,
+ // We pass through arrays to be rendered as multiline labels, we convert Others to strings here.
+ callback: core_ticks.formatters.values,
+ minor: {},
+ major: {}
+ }
+});
+
+function labelsFromTicks(ticks) {
+ var labels = [];
+ var i, ilen;
+
+ for (i = 0, ilen = ticks.length; i < ilen; ++i) {
+ labels.push(ticks[i].label);
+ }
+
+ return labels;
+}
+
+function getPixelForGridLine(scale, index, offsetGridLines) {
+ var lineValue = scale.getPixelForTick(index);
+
+ if (offsetGridLines) {
+ if (scale.getTicks().length === 1) {
+ lineValue -= scale.isHorizontal() ?
+ Math.max(lineValue - scale.left, scale.right - lineValue) :
+ Math.max(lineValue - scale.top, scale.bottom - lineValue);
+ } else if (index === 0) {
+ lineValue -= (scale.getPixelForTick(1) - lineValue) / 2;
+ } else {
+ lineValue -= (lineValue - scale.getPixelForTick(index - 1)) / 2;
+ }
+ }
+ return lineValue;
+}
+
+function computeTextSize(context, tick, font) {
+ return helpers$1.isArray(tick) ?
+ helpers$1.longestText(context, font, tick) :
+ context.measureText(tick).width;
+}
+
+var core_scale = core_element.extend({
+ /**
+ * Get the padding needed for the scale
+ * @method getPadding
+ * @private
+ * @returns {Padding} the necessary padding
+ */
+ getPadding: function() {
+ var me = this;
+ return {
+ left: me.paddingLeft || 0,
+ top: me.paddingTop || 0,
+ right: me.paddingRight || 0,
+ bottom: me.paddingBottom || 0
+ };
+ },
+
+ /**
+ * Returns the scale tick objects ({label, major})
+ * @since 2.7
+ */
+ getTicks: function() {
+ return this._ticks;
+ },
+
+ // These methods are ordered by lifecyle. Utilities then follow.
+ // Any function defined here is inherited by all scale types.
+ // Any function can be extended by the scale type
+
+ mergeTicksOptions: function() {
+ var ticks = this.options.ticks;
+ if (ticks.minor === false) {
+ ticks.minor = {
+ display: false
+ };
+ }
+ if (ticks.major === false) {
+ ticks.major = {
+ display: false
+ };
+ }
+ for (var key in ticks) {
+ if (key !== 'major' && key !== 'minor') {
+ if (typeof ticks.minor[key] === 'undefined') {
+ ticks.minor[key] = ticks[key];
+ }
+ if (typeof ticks.major[key] === 'undefined') {
+ ticks.major[key] = ticks[key];
+ }
+ }
+ }
+ },
+ beforeUpdate: function() {
+ helpers$1.callback(this.options.beforeUpdate, [this]);
+ },
+
+ update: function(maxWidth, maxHeight, margins) {
+ var me = this;
+ var i, ilen, labels, label, ticks, tick;
+
+ // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
+ me.beforeUpdate();
+
+ // Absorb the master measurements
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = helpers$1.extend({
+ left: 0,
+ right: 0,
+ top: 0,
+ bottom: 0
+ }, margins);
+
+ me._maxLabelLines = 0;
+ me.longestLabelWidth = 0;
+ me.longestTextCache = me.longestTextCache || {};
+
+ // Dimensions
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
+
+ // Data min/max
+ me.beforeDataLimits();
+ me.determineDataLimits();
+ me.afterDataLimits();
+
+ // Ticks - `this.ticks` is now DEPRECATED!
+ // Internal ticks are now stored as objects in the PRIVATE `this._ticks` member
+ // and must not be accessed directly from outside this class. `this.ticks` being
+ // around for long time and not marked as private, we can't change its structure
+ // without unexpected breaking changes. If you need to access the scale ticks,
+ // use scale.getTicks() instead.
+
+ me.beforeBuildTicks();
+
+ // New implementations should return an array of objects but for BACKWARD COMPAT,
+ // we still support no return (`this.ticks` internally set by calling this method).
+ ticks = me.buildTicks() || [];
+
+ // Allow modification of ticks in callback.
+ ticks = me.afterBuildTicks(ticks) || ticks;
+
+ me.beforeTickToLabelConversion();
+
+ // New implementations should return the formatted tick labels but for BACKWARD
+ // COMPAT, we still support no return (`this.ticks` internally changed by calling
+ // this method and supposed to contain only string values).
+ labels = me.convertTicksToLabels(ticks) || me.ticks;
+
+ me.afterTickToLabelConversion();
+
+ me.ticks = labels; // BACKWARD COMPATIBILITY
+
+ // IMPORTANT: from this point, we consider that `this.ticks` will NEVER change!
+
+ // BACKWARD COMPAT: synchronize `_ticks` with labels (so potentially `this.ticks`)
+ for (i = 0, ilen = labels.length; i < ilen; ++i) {
+ label = labels[i];
+ tick = ticks[i];
+ if (!tick) {
+ ticks.push(tick = {
+ label: label,
+ major: false
+ });
+ } else {
+ tick.label = label;
+ }
+ }
+
+ me._ticks = ticks;
+
+ // Tick Rotation
+ me.beforeCalculateTickRotation();
+ me.calculateTickRotation();
+ me.afterCalculateTickRotation();
+ // Fit
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
+ //
+ me.afterUpdate();
+
+ return me.minSize;
+
+ },
+ afterUpdate: function() {
+ helpers$1.callback(this.options.afterUpdate, [this]);
+ },
+
+ //
+
+ beforeSetDimensions: function() {
+ helpers$1.callback(this.options.beforeSetDimensions, [this]);
+ },
+ setDimensions: function() {
+ var me = this;
+ // Set the unconstrained dimension before label rotation
+ if (me.isHorizontal()) {
+ // Reset position before calculating rotation
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
+ } else {
+ me.height = me.maxHeight;
+
+ // Reset position before calculating rotation
+ me.top = 0;
+ me.bottom = me.height;
+ }
+
+ // Reset padding
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
+ },
+ afterSetDimensions: function() {
+ helpers$1.callback(this.options.afterSetDimensions, [this]);
+ },
+
+ // Data limits
+ beforeDataLimits: function() {
+ helpers$1.callback(this.options.beforeDataLimits, [this]);
+ },
+ determineDataLimits: helpers$1.noop,
+ afterDataLimits: function() {
+ helpers$1.callback(this.options.afterDataLimits, [this]);
+ },
+
+ //
+ beforeBuildTicks: function() {
+ helpers$1.callback(this.options.beforeBuildTicks, [this]);
+ },
+ buildTicks: helpers$1.noop,
+ afterBuildTicks: function(ticks) {
+ var me = this;
+ // ticks is empty for old axis implementations here
+ if (helpers$1.isArray(ticks) && ticks.length) {
+ return helpers$1.callback(me.options.afterBuildTicks, [me, ticks]);
+ }
+ // Support old implementations (that modified `this.ticks` directly in buildTicks)
+ me.ticks = helpers$1.callback(me.options.afterBuildTicks, [me, me.ticks]) || me.ticks;
+ return ticks;
+ },
+
+ beforeTickToLabelConversion: function() {
+ helpers$1.callback(this.options.beforeTickToLabelConversion, [this]);
+ },
+ convertTicksToLabels: function() {
+ var me = this;
+ // Convert ticks to strings
+ var tickOpts = me.options.ticks;
+ me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback, this);
+ },
+ afterTickToLabelConversion: function() {
+ helpers$1.callback(this.options.afterTickToLabelConversion, [this]);
+ },
+
+ //
+
+ beforeCalculateTickRotation: function() {
+ helpers$1.callback(this.options.beforeCalculateTickRotation, [this]);
+ },
+ calculateTickRotation: function() {
+ var me = this;
+ var context = me.ctx;
+ var tickOpts = me.options.ticks;
+ var labels = labelsFromTicks(me._ticks);
+
+ // Get the width of each grid by calculating the difference
+ // between x offsets between 0 and 1.
+ var tickFont = helpers$1.options._parseFont(tickOpts);
+ context.font = tickFont.string;
+
+ var labelRotation = tickOpts.minRotation || 0;
+
+ if (labels.length && me.options.display && me.isHorizontal()) {
+ var originalLabelWidth = helpers$1.longestText(context, tickFont.string, labels, me.longestTextCache);
+ var labelWidth = originalLabelWidth;
+ var cosRotation, sinRotation;
+
+ // Allow 3 pixels x2 padding either side for label readability
+ var tickWidth = me.getPixelForTick(1) - me.getPixelForTick(0) - 6;
+
+ // Max label rotation can be set or default to 90 - also act as a loop counter
+ while (labelWidth > tickWidth && labelRotation < tickOpts.maxRotation) {
+ var angleRadians = helpers$1.toRadians(labelRotation);
+ cosRotation = Math.cos(angleRadians);
+ sinRotation = Math.sin(angleRadians);
+
+ if (sinRotation * originalLabelWidth > me.maxHeight) {
+ // go back one step
+ labelRotation--;
+ break;
+ }
+
+ labelRotation++;
+ labelWidth = cosRotation * originalLabelWidth;
+ }
+ }
+
+ me.labelRotation = labelRotation;
+ },
+ afterCalculateTickRotation: function() {
+ helpers$1.callback(this.options.afterCalculateTickRotation, [this]);
+ },
+
+ //
+
+ beforeFit: function() {
+ helpers$1.callback(this.options.beforeFit, [this]);
+ },
+ fit: function() {
+ var me = this;
+ // Reset
+ var minSize = me.minSize = {
+ width: 0,
+ height: 0
+ };
+
+ var labels = labelsFromTicks(me._ticks);
+
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+ var scaleLabelOpts = opts.scaleLabel;
+ var gridLineOpts = opts.gridLines;
+ var display = me._isVisible();
+ var position = opts.position;
+ var isHorizontal = me.isHorizontal();
+
+ var parseFont = helpers$1.options._parseFont;
+ var tickFont = parseFont(tickOpts);
+ var tickMarkLength = opts.gridLines.tickMarkLength;
+
+ // Width
+ if (isHorizontal) {
+ // subtract the margins to line up with the chartArea if we are a full width scale
+ minSize.width = me.isFullWidth() ? me.maxWidth - me.margins.left - me.margins.right : me.maxWidth;
+ } else {
+ minSize.width = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
+ }
+
+ // height
+ if (isHorizontal) {
+ minSize.height = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
+ } else {
+ minSize.height = me.maxHeight; // fill all the height
+ }
+
+ // Are we showing a title for the scale?
+ if (scaleLabelOpts.display && display) {
+ var scaleLabelFont = parseFont(scaleLabelOpts);
+ var scaleLabelPadding = helpers$1.options.toPadding(scaleLabelOpts.padding);
+ var deltaHeight = scaleLabelFont.lineHeight + scaleLabelPadding.height;
+
+ if (isHorizontal) {
+ minSize.height += deltaHeight;
+ } else {
+ minSize.width += deltaHeight;
+ }
+ }
+
+ // Don't bother fitting the ticks if we are not showing the labels
+ if (tickOpts.display && display) {
+ var largestTextWidth = helpers$1.longestText(me.ctx, tickFont.string, labels, me.longestTextCache);
+ var tallestLabelHeightInLines = helpers$1.numberOfLabelLines(labels);
+ var lineSpace = tickFont.size * 0.5;
+ var tickPadding = me.options.ticks.padding;
+
+ // Store max number of lines and widest label for _autoSkip
+ me._maxLabelLines = tallestLabelHeightInLines;
+ me.longestLabelWidth = largestTextWidth;
+
+ if (isHorizontal) {
+ var angleRadians = helpers$1.toRadians(me.labelRotation);
+ var cosRotation = Math.cos(angleRadians);
+ var sinRotation = Math.sin(angleRadians);
+
+ // TODO - improve this calculation
+ var labelHeight = (sinRotation * largestTextWidth)
+ + (tickFont.lineHeight * tallestLabelHeightInLines)
+ + lineSpace; // padding
+
+ minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding);
+
+ me.ctx.font = tickFont.string;
+ var firstLabelWidth = computeTextSize(me.ctx, labels[0], tickFont.string);
+ var lastLabelWidth = computeTextSize(me.ctx, labels[labels.length - 1], tickFont.string);
+ var offsetLeft = me.getPixelForTick(0) - me.left;
+ var offsetRight = me.right - me.getPixelForTick(labels.length - 1);
+ var paddingLeft, paddingRight;
+
+ // Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned
+ // which means that the right padding is dominated by the font height
+ if (me.labelRotation !== 0) {
+ paddingLeft = position === 'bottom' ? (cosRotation * firstLabelWidth) : (cosRotation * lineSpace);
+ paddingRight = position === 'bottom' ? (cosRotation * lineSpace) : (cosRotation * lastLabelWidth);
+ } else {
+ paddingLeft = firstLabelWidth / 2;
+ paddingRight = lastLabelWidth / 2;
+ }
+ me.paddingLeft = Math.max(paddingLeft - offsetLeft, 0) + 3; // add 3 px to move away from canvas edges
+ me.paddingRight = Math.max(paddingRight - offsetRight, 0) + 3;
+ } else {
+ // A vertical axis is more constrained by the width. Labels are the
+ // dominant factor here, so get that length first and account for padding
+ if (tickOpts.mirror) {
+ largestTextWidth = 0;
+ } else {
+ // use lineSpace for consistency with horizontal axis
+ // tickPadding is not implemented for horizontal
+ largestTextWidth += tickPadding + lineSpace;
+ }
+
+ minSize.width = Math.min(me.maxWidth, minSize.width + largestTextWidth);
+
+ me.paddingTop = tickFont.size / 2;
+ me.paddingBottom = tickFont.size / 2;
+ }
+ }
+
+ me.handleMargins();
+
+ me.width = minSize.width;
+ me.height = minSize.height;
+ },
+
+ /**
+ * Handle margins and padding interactions
+ * @private
+ */
+ handleMargins: function() {
+ var me = this;
+ if (me.margins) {
+ me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0);
+ me.paddingTop = Math.max(me.paddingTop - me.margins.top, 0);
+ me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0);
+ me.paddingBottom = Math.max(me.paddingBottom - me.margins.bottom, 0);
+ }
+ },
+
+ afterFit: function() {
+ helpers$1.callback(this.options.afterFit, [this]);
+ },
+
+ // Shared Methods
+ isHorizontal: function() {
+ return this.options.position === 'top' || this.options.position === 'bottom';
+ },
+ isFullWidth: function() {
+ return (this.options.fullWidth);
+ },
+
+ // Get the correct value. NaN bad inputs, If the value type is object get the x or y based on whether we are horizontal or not
+ getRightValue: function(rawValue) {
+ // Null and undefined values first
+ if (helpers$1.isNullOrUndef(rawValue)) {
+ return NaN;
+ }
+ // isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values
+ if ((typeof rawValue === 'number' || rawValue instanceof Number) && !isFinite(rawValue)) {
+ return NaN;
+ }
+ // If it is in fact an object, dive in one more level
+ if (rawValue) {
+ if (this.isHorizontal()) {
+ if (rawValue.x !== undefined) {
+ return this.getRightValue(rawValue.x);
+ }
+ } else if (rawValue.y !== undefined) {
+ return this.getRightValue(rawValue.y);
+ }
+ }
+
+ // Value is good, return it
+ return rawValue;
+ },
+
+ /**
+ * Used to get the value to display in the tooltip for the data at the given index
+ * @param index
+ * @param datasetIndex
+ */
+ getLabelForIndex: helpers$1.noop,
+
+ /**
+ * Returns the location of the given data point. Value can either be an index or a numerical value
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ * @param value
+ * @param index
+ * @param datasetIndex
+ */
+ getPixelForValue: helpers$1.noop,
+
+ /**
+ * Used to get the data value from a given pixel. This is the inverse of getPixelForValue
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ * @param pixel
+ */
+ getValueForPixel: helpers$1.noop,
+
+ /**
+ * Returns the location of the tick at the given index
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ */
+ getPixelForTick: function(index) {
+ var me = this;
+ var offset = me.options.offset;
+ if (me.isHorizontal()) {
+ var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
+ var tickWidth = innerWidth / Math.max((me._ticks.length - (offset ? 0 : 1)), 1);
+ var pixel = (tickWidth * index) + me.paddingLeft;
+
+ if (offset) {
+ pixel += tickWidth / 2;
+ }
+
+ var finalVal = me.left + pixel;
+ finalVal += me.isFullWidth() ? me.margins.left : 0;
+ return finalVal;
+ }
+ var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
+ return me.top + (index * (innerHeight / (me._ticks.length - 1)));
+ },
+
+ /**
+ * Utility for getting the pixel location of a percentage of scale
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ */
+ getPixelForDecimal: function(decimal) {
+ var me = this;
+ if (me.isHorizontal()) {
+ var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
+ var valueOffset = (innerWidth * decimal) + me.paddingLeft;
+
+ var finalVal = me.left + valueOffset;
+ finalVal += me.isFullWidth() ? me.margins.left : 0;
+ return finalVal;
+ }
+ return me.top + (decimal * me.height);
+ },
+
+ /**
+ * Returns the pixel for the minimum chart value
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ */
+ getBasePixel: function() {
+ return this.getPixelForValue(this.getBaseValue());
+ },
+
+ getBaseValue: function() {
+ var me = this;
+ var min = me.min;
+ var max = me.max;
+
+ return me.beginAtZero ? 0 :
+ min < 0 && max < 0 ? max :
+ min > 0 && max > 0 ? min :
+ 0;
+ },
+
+ /**
+ * Returns a subset of ticks to be plotted to avoid overlapping labels.
+ * @private
+ */
+ _autoSkip: function(ticks) {
+ var me = this;
+ var isHorizontal = me.isHorizontal();
+ var optionTicks = me.options.ticks.minor;
+ var tickCount = ticks.length;
+ var skipRatio = false;
+ var maxTicks = optionTicks.maxTicksLimit;
+
+ // Total space needed to display all ticks. First and last ticks are
+ // drawn as their center at end of axis, so tickCount-1
+ var ticksLength = me._tickSize() * (tickCount - 1);
+
+ // Axis length
+ var axisLength = isHorizontal
+ ? me.width - (me.paddingLeft + me.paddingRight)
+ : me.height - (me.paddingTop + me.PaddingBottom);
+
+ var result = [];
+ var i, tick;
+
+ if (ticksLength > axisLength) {
+ skipRatio = 1 + Math.floor(ticksLength / axisLength);
+ }
+
+ // if they defined a max number of optionTicks,
+ // increase skipRatio until that number is met
+ if (tickCount > maxTicks) {
+ skipRatio = Math.max(skipRatio, 1 + Math.floor(tickCount / maxTicks));
+ }
+
+ for (i = 0; i < tickCount; i++) {
+ tick = ticks[i];
+
+ if (skipRatio > 1 && i % skipRatio > 0) {
+ // leave tick in place but make sure it's not displayed (#4635)
+ delete tick.label;
+ }
+ result.push(tick);
+ }
+ return result;
+ },
+
+ /**
+ * @private
+ */
+ _tickSize: function() {
+ var me = this;
+ var isHorizontal = me.isHorizontal();
+ var optionTicks = me.options.ticks.minor;
+
+ // Calculate space needed by label in axis direction.
+ var rot = helpers$1.toRadians(me.labelRotation);
+ var cos = Math.abs(Math.cos(rot));
+ var sin = Math.abs(Math.sin(rot));
+
+ var padding = optionTicks.autoSkipPadding || 0;
+ var w = (me.longestLabelWidth + padding) || 0;
+
+ var tickFont = helpers$1.options._parseFont(optionTicks);
+ var h = (me._maxLabelLines * tickFont.lineHeight + padding) || 0;
+
+ // Calculate space needed for 1 tick in axis direction.
+ return isHorizontal
+ ? h * cos > w * sin ? w / cos : h / sin
+ : h * sin < w * cos ? h / cos : w / sin;
+ },
+
+ /**
+ * @private
+ */
+ _isVisible: function() {
+ var me = this;
+ var chart = me.chart;
+ var display = me.options.display;
+ var i, ilen, meta;
+
+ if (display !== 'auto') {
+ return !!display;
+ }
+
+ // When 'auto', the scale is visible if at least one associated dataset is visible.
+ for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) {
+ if (chart.isDatasetVisible(i)) {
+ meta = chart.getDatasetMeta(i);
+ if (meta.xAxisID === me.id || meta.yAxisID === me.id) {
+ return true;
+ }
+ }
+ }
+
+ return false;
+ },
+
+ /**
+ * Actually draw the scale on the canvas
+ * @param {object} chartArea - the area of the chart to draw full grid lines on
+ */
+ draw: function(chartArea) {
+ var me = this;
+ var options = me.options;
+
+ if (!me._isVisible()) {
+ return;
+ }
+
+ var chart = me.chart;
+ var context = me.ctx;
+ var globalDefaults = core_defaults.global;
+ var defaultFontColor = globalDefaults.defaultFontColor;
+ var optionTicks = options.ticks.minor;
+ var optionMajorTicks = options.ticks.major || optionTicks;
+ var gridLines = options.gridLines;
+ var scaleLabel = options.scaleLabel;
+ var position = options.position;
+
+ var isRotated = me.labelRotation !== 0;
+ var isMirrored = optionTicks.mirror;
+ var isHorizontal = me.isHorizontal();
+
+ var parseFont = helpers$1.options._parseFont;
+ var ticks = optionTicks.display && optionTicks.autoSkip ? me._autoSkip(me.getTicks()) : me.getTicks();
+ var tickFontColor = valueOrDefault$9(optionTicks.fontColor, defaultFontColor);
+ var tickFont = parseFont(optionTicks);
+ var lineHeight = tickFont.lineHeight;
+ var majorTickFontColor = valueOrDefault$9(optionMajorTicks.fontColor, defaultFontColor);
+ var majorTickFont = parseFont(optionMajorTicks);
+ var tickPadding = optionTicks.padding;
+ var labelOffset = optionTicks.labelOffset;
+
+ var tl = gridLines.drawTicks ? gridLines.tickMarkLength : 0;
+
+ var scaleLabelFontColor = valueOrDefault$9(scaleLabel.fontColor, defaultFontColor);
+ var scaleLabelFont = parseFont(scaleLabel);
+ var scaleLabelPadding = helpers$1.options.toPadding(scaleLabel.padding);
+ var labelRotationRadians = helpers$1.toRadians(me.labelRotation);
+
+ var itemsToDraw = [];
+
+ var axisWidth = gridLines.drawBorder ? valueAtIndexOrDefault(gridLines.lineWidth, 0, 0) : 0;
+ var alignPixel = helpers$1._alignPixel;
+ var borderValue, tickStart, tickEnd;
+
+ if (position === 'top') {
+ borderValue = alignPixel(chart, me.bottom, axisWidth);
+ tickStart = me.bottom - tl;
+ tickEnd = borderValue - axisWidth / 2;
+ } else if (position === 'bottom') {
+ borderValue = alignPixel(chart, me.top, axisWidth);
+ tickStart = borderValue + axisWidth / 2;
+ tickEnd = me.top + tl;
+ } else if (position === 'left') {
+ borderValue = alignPixel(chart, me.right, axisWidth);
+ tickStart = me.right - tl;
+ tickEnd = borderValue - axisWidth / 2;
+ } else {
+ borderValue = alignPixel(chart, me.left, axisWidth);
+ tickStart = borderValue + axisWidth / 2;
+ tickEnd = me.left + tl;
+ }
+
+ var epsilon = 0.0000001; // 0.0000001 is margin in pixels for Accumulated error.
+
+ helpers$1.each(ticks, function(tick, index) {
+ // autoskipper skipped this tick (#4635)
+ if (helpers$1.isNullOrUndef(tick.label)) {
+ return;
+ }
+
+ var label = tick.label;
+ var lineWidth, lineColor, borderDash, borderDashOffset;
+ if (index === me.zeroLineIndex && options.offset === gridLines.offsetGridLines) {
+ // Draw the first index specially
+ lineWidth = gridLines.zeroLineWidth;
+ lineColor = gridLines.zeroLineColor;
+ borderDash = gridLines.zeroLineBorderDash || [];
+ borderDashOffset = gridLines.zeroLineBorderDashOffset || 0.0;
+ } else {
+ lineWidth = valueAtIndexOrDefault(gridLines.lineWidth, index);
+ lineColor = valueAtIndexOrDefault(gridLines.color, index);
+ borderDash = gridLines.borderDash || [];
+ borderDashOffset = gridLines.borderDashOffset || 0.0;
+ }
+
+ // Common properties
+ var tx1, ty1, tx2, ty2, x1, y1, x2, y2, labelX, labelY, textOffset, textAlign;
+ var labelCount = helpers$1.isArray(label) ? label.length : 1;
+ var lineValue = getPixelForGridLine(me, index, gridLines.offsetGridLines);
+
+ if (isHorizontal) {
+ var labelYOffset = tl + tickPadding;
+
+ if (lineValue < me.left - epsilon) {
+ lineColor = 'rgba(0,0,0,0)';
+ }
+
+ tx1 = tx2 = x1 = x2 = alignPixel(chart, lineValue, lineWidth);
+ ty1 = tickStart;
+ ty2 = tickEnd;
+ labelX = me.getPixelForTick(index) + labelOffset; // x values for optionTicks (need to consider offsetLabel option)
+
+ if (position === 'top') {
+ y1 = alignPixel(chart, chartArea.top, axisWidth) + axisWidth / 2;
+ y2 = chartArea.bottom;
+ textOffset = ((!isRotated ? 0.5 : 1) - labelCount) * lineHeight;
+ textAlign = !isRotated ? 'center' : 'left';
+ labelY = me.bottom - labelYOffset;
+ } else {
+ y1 = chartArea.top;
+ y2 = alignPixel(chart, chartArea.bottom, axisWidth) - axisWidth / 2;
+ textOffset = (!isRotated ? 0.5 : 0) * lineHeight;
+ textAlign = !isRotated ? 'center' : 'right';
+ labelY = me.top + labelYOffset;
+ }
+ } else {
+ var labelXOffset = (isMirrored ? 0 : tl) + tickPadding;
+
+ if (lineValue < me.top - epsilon) {
+ lineColor = 'rgba(0,0,0,0)';
+ }
+
+ tx1 = tickStart;
+ tx2 = tickEnd;
+ ty1 = ty2 = y1 = y2 = alignPixel(chart, lineValue, lineWidth);
+ labelY = me.getPixelForTick(index) + labelOffset;
+ textOffset = (1 - labelCount) * lineHeight / 2;
+
+ if (position === 'left') {
+ x1 = alignPixel(chart, chartArea.left, axisWidth) + axisWidth / 2;
+ x2 = chartArea.right;
+ textAlign = isMirrored ? 'left' : 'right';
+ labelX = me.right - labelXOffset;
+ } else {
+ x1 = chartArea.left;
+ x2 = alignPixel(chart, chartArea.right, axisWidth) - axisWidth / 2;
+ textAlign = isMirrored ? 'right' : 'left';
+ labelX = me.left + labelXOffset;
+ }
+ }
+
+ itemsToDraw.push({
+ tx1: tx1,
+ ty1: ty1,
+ tx2: tx2,
+ ty2: ty2,
+ x1: x1,
+ y1: y1,
+ x2: x2,
+ y2: y2,
+ labelX: labelX,
+ labelY: labelY,
+ glWidth: lineWidth,
+ glColor: lineColor,
+ glBorderDash: borderDash,
+ glBorderDashOffset: borderDashOffset,
+ rotation: -1 * labelRotationRadians,
+ label: label,
+ major: tick.major,
+ textOffset: textOffset,
+ textAlign: textAlign
+ });
+ });
+
+ // Draw all of the tick labels, tick marks, and grid lines at the correct places
+ helpers$1.each(itemsToDraw, function(itemToDraw) {
+ var glWidth = itemToDraw.glWidth;
+ var glColor = itemToDraw.glColor;
+
+ if (gridLines.display && glWidth && glColor) {
+ context.save();
+ context.lineWidth = glWidth;
+ context.strokeStyle = glColor;
+ if (context.setLineDash) {
+ context.setLineDash(itemToDraw.glBorderDash);
+ context.lineDashOffset = itemToDraw.glBorderDashOffset;
+ }
+
+ context.beginPath();
+
+ if (gridLines.drawTicks) {
+ context.moveTo(itemToDraw.tx1, itemToDraw.ty1);
+ context.lineTo(itemToDraw.tx2, itemToDraw.ty2);
+ }
+
+ if (gridLines.drawOnChartArea) {
+ context.moveTo(itemToDraw.x1, itemToDraw.y1);
+ context.lineTo(itemToDraw.x2, itemToDraw.y2);
+ }
+
+ context.stroke();
+ context.restore();
+ }
+
+ if (optionTicks.display) {
+ // Make sure we draw text in the correct color and font
+ context.save();
+ context.translate(itemToDraw.labelX, itemToDraw.labelY);
+ context.rotate(itemToDraw.rotation);
+ context.font = itemToDraw.major ? majorTickFont.string : tickFont.string;
+ context.fillStyle = itemToDraw.major ? majorTickFontColor : tickFontColor;
+ context.textBaseline = 'middle';
+ context.textAlign = itemToDraw.textAlign;
+
+ var label = itemToDraw.label;
+ var y = itemToDraw.textOffset;
+ if (helpers$1.isArray(label)) {
+ for (var i = 0; i < label.length; ++i) {
+ // We just make sure the multiline element is a string here..
+ context.fillText('' + label[i], 0, y);
+ y += lineHeight;
+ }
+ } else {
+ context.fillText(label, 0, y);
+ }
+ context.restore();
+ }
+ });
+
+ if (scaleLabel.display) {
+ // Draw the scale label
+ var scaleLabelX;
+ var scaleLabelY;
+ var rotation = 0;
+ var halfLineHeight = scaleLabelFont.lineHeight / 2;
+
+ if (isHorizontal) {
+ scaleLabelX = me.left + ((me.right - me.left) / 2); // midpoint of the width
+ scaleLabelY = position === 'bottom'
+ ? me.bottom - halfLineHeight - scaleLabelPadding.bottom
+ : me.top + halfLineHeight + scaleLabelPadding.top;
+ } else {
+ var isLeft = position === 'left';
+ scaleLabelX = isLeft
+ ? me.left + halfLineHeight + scaleLabelPadding.top
+ : me.right - halfLineHeight - scaleLabelPadding.top;
+ scaleLabelY = me.top + ((me.bottom - me.top) / 2);
+ rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI;
+ }
+
+ context.save();
+ context.translate(scaleLabelX, scaleLabelY);
+ context.rotate(rotation);
+ context.textAlign = 'center';
+ context.textBaseline = 'middle';
+ context.fillStyle = scaleLabelFontColor; // render in correct colour
+ context.font = scaleLabelFont.string;
+ context.fillText(scaleLabel.labelString, 0, 0);
+ context.restore();
+ }
+
+ if (axisWidth) {
+ // Draw the line at the edge of the axis
+ var firstLineWidth = axisWidth;
+ var lastLineWidth = valueAtIndexOrDefault(gridLines.lineWidth, ticks.length - 1, 0);
+ var x1, x2, y1, y2;
+
+ if (isHorizontal) {
+ x1 = alignPixel(chart, me.left, firstLineWidth) - firstLineWidth / 2;
+ x2 = alignPixel(chart, me.right, lastLineWidth) + lastLineWidth / 2;
+ y1 = y2 = borderValue;
+ } else {
+ y1 = alignPixel(chart, me.top, firstLineWidth) - firstLineWidth / 2;
+ y2 = alignPixel(chart, me.bottom, lastLineWidth) + lastLineWidth / 2;
+ x1 = x2 = borderValue;
+ }
+
+ context.lineWidth = axisWidth;
+ context.strokeStyle = valueAtIndexOrDefault(gridLines.color, 0);
+ context.beginPath();
+ context.moveTo(x1, y1);
+ context.lineTo(x2, y2);
+ context.stroke();
+ }
+ }
+});
+
+var defaultConfig = {
+ position: 'bottom'
+};
+
+var scale_category = core_scale.extend({
+ /**
+ * Internal function to get the correct labels. If data.xLabels or data.yLabels are defined, use those
+ * else fall back to data.labels
+ * @private
+ */
+ getLabels: function() {
+ var data = this.chart.data;
+ return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels;
+ },
+
+ determineDataLimits: function() {
+ var me = this;
+ var labels = me.getLabels();
+ me.minIndex = 0;
+ me.maxIndex = labels.length - 1;
+ var findIndex;
+
+ if (me.options.ticks.min !== undefined) {
+ // user specified min value
+ findIndex = labels.indexOf(me.options.ticks.min);
+ me.minIndex = findIndex !== -1 ? findIndex : me.minIndex;
+ }
+
+ if (me.options.ticks.max !== undefined) {
+ // user specified max value
+ findIndex = labels.indexOf(me.options.ticks.max);
+ me.maxIndex = findIndex !== -1 ? findIndex : me.maxIndex;
+ }
+
+ me.min = labels[me.minIndex];
+ me.max = labels[me.maxIndex];
+ },
+
+ buildTicks: function() {
+ var me = this;
+ var labels = me.getLabels();
+ // If we are viewing some subset of labels, slice the original array
+ me.ticks = (me.minIndex === 0 && me.maxIndex === labels.length - 1) ? labels : labels.slice(me.minIndex, me.maxIndex + 1);
+ },
+
+ getLabelForIndex: function(index, datasetIndex) {
+ var me = this;
+ var chart = me.chart;
+
+ if (chart.getDatasetMeta(datasetIndex).controller._getValueScaleId() === me.id) {
+ return me.getRightValue(chart.data.datasets[datasetIndex].data[index]);
+ }
+
+ return me.ticks[index - me.minIndex];
+ },
+
+ // Used to get data value locations. Value can either be an index or a numerical value
+ getPixelForValue: function(value, index) {
+ var me = this;
+ var offset = me.options.offset;
+ // 1 is added because we need the length but we have the indexes
+ var offsetAmt = Math.max((me.maxIndex + 1 - me.minIndex - (offset ? 0 : 1)), 1);
+
+ // If value is a data object, then index is the index in the data array,
+ // not the index of the scale. We need to change that.
+ var valueCategory;
+ if (value !== undefined && value !== null) {
+ valueCategory = me.isHorizontal() ? value.x : value.y;
+ }
+ if (valueCategory !== undefined || (value !== undefined && isNaN(index))) {
+ var labels = me.getLabels();
+ value = valueCategory || value;
+ var idx = labels.indexOf(value);
+ index = idx !== -1 ? idx : index;
+ }
+
+ if (me.isHorizontal()) {
+ var valueWidth = me.width / offsetAmt;
+ var widthOffset = (valueWidth * (index - me.minIndex));
+
+ if (offset) {
+ widthOffset += (valueWidth / 2);
+ }
+
+ return me.left + widthOffset;
+ }
+ var valueHeight = me.height / offsetAmt;
+ var heightOffset = (valueHeight * (index - me.minIndex));
+
+ if (offset) {
+ heightOffset += (valueHeight / 2);
+ }
+
+ return me.top + heightOffset;
+ },
+
+ getPixelForTick: function(index) {
+ return this.getPixelForValue(this.ticks[index], index + this.minIndex, null);
+ },
+
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var offset = me.options.offset;
+ var value;
+ var offsetAmt = Math.max((me._ticks.length - (offset ? 0 : 1)), 1);
+ var horz = me.isHorizontal();
+ var valueDimension = (horz ? me.width : me.height) / offsetAmt;
+
+ pixel -= horz ? me.left : me.top;
+
+ if (offset) {
+ pixel -= (valueDimension / 2);
+ }
+
+ if (pixel <= 0) {
+ value = 0;
+ } else {
+ value = Math.round(pixel / valueDimension);
+ }
+
+ return value + me.minIndex;
+ },
+
+ getBasePixel: function() {
+ return this.bottom;
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults = defaultConfig;
+scale_category._defaults = _defaults;
+
+var noop = helpers$1.noop;
+var isNullOrUndef = helpers$1.isNullOrUndef;
+
+/**
+ * Generate a set of linear ticks
+ * @param generationOptions the options used to generate the ticks
+ * @param dataRange the range of the data
+ * @returns {number[]} array of tick values
+ */
+function generateTicks(generationOptions, dataRange) {
+ var ticks = [];
+ // To get a "nice" value for the tick spacing, we will use the appropriately named
+ // "nice number" algorithm. See https://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks
+ // for details.
+
+ var MIN_SPACING = 1e-14;
+ var stepSize = generationOptions.stepSize;
+ var unit = stepSize || 1;
+ var maxNumSpaces = generationOptions.maxTicks - 1;
+ var min = generationOptions.min;
+ var max = generationOptions.max;
+ var precision = generationOptions.precision;
+ var rmin = dataRange.min;
+ var rmax = dataRange.max;
+ var spacing = helpers$1.niceNum((rmax - rmin) / maxNumSpaces / unit) * unit;
+ var factor, niceMin, niceMax, numSpaces;
+
+ // Beyond MIN_SPACING floating point numbers being to lose precision
+ // such that we can't do the math necessary to generate ticks
+ if (spacing < MIN_SPACING && isNullOrUndef(min) && isNullOrUndef(max)) {
+ return [rmin, rmax];
+ }
+
+ numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing);
+ if (numSpaces > maxNumSpaces) {
+ // If the calculated num of spaces exceeds maxNumSpaces, recalculate it
+ spacing = helpers$1.niceNum(numSpaces * spacing / maxNumSpaces / unit) * unit;
+ }
+
+ if (stepSize || isNullOrUndef(precision)) {
+ // If a precision is not specified, calculate factor based on spacing
+ factor = Math.pow(10, helpers$1._decimalPlaces(spacing));
+ } else {
+ // If the user specified a precision, round to that number of decimal places
+ factor = Math.pow(10, precision);
+ spacing = Math.ceil(spacing * factor) / factor;
+ }
+
+ niceMin = Math.floor(rmin / spacing) * spacing;
+ niceMax = Math.ceil(rmax / spacing) * spacing;
+
+ // If min, max and stepSize is set and they make an evenly spaced scale use it.
+ if (stepSize) {
+ // If very close to our whole number, use it.
+ if (!isNullOrUndef(min) && helpers$1.almostWhole(min / spacing, spacing / 1000)) {
+ niceMin = min;
+ }
+ if (!isNullOrUndef(max) && helpers$1.almostWhole(max / spacing, spacing / 1000)) {
+ niceMax = max;
+ }
+ }
+
+ numSpaces = (niceMax - niceMin) / spacing;
+ // If very close to our rounded value, use it.
+ if (helpers$1.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {
+ numSpaces = Math.round(numSpaces);
+ } else {
+ numSpaces = Math.ceil(numSpaces);
+ }
+
+ niceMin = Math.round(niceMin * factor) / factor;
+ niceMax = Math.round(niceMax * factor) / factor;
+ ticks.push(isNullOrUndef(min) ? niceMin : min);
+ for (var j = 1; j < numSpaces; ++j) {
+ ticks.push(Math.round((niceMin + j * spacing) * factor) / factor);
+ }
+ ticks.push(isNullOrUndef(max) ? niceMax : max);
+
+ return ticks;
+}
+
+var scale_linearbase = core_scale.extend({
+ getRightValue: function(value) {
+ if (typeof value === 'string') {
+ return +value;
+ }
+ return core_scale.prototype.getRightValue.call(this, value);
+ },
+
+ handleTickRangeOptions: function() {
+ var me = this;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+
+ // If we are forcing it to begin at 0, but 0 will already be rendered on the chart,
+ // do nothing since that would make the chart weird. If the user really wants a weird chart
+ // axis, they can manually override it
+ if (tickOpts.beginAtZero) {
+ var minSign = helpers$1.sign(me.min);
+ var maxSign = helpers$1.sign(me.max);
+
+ if (minSign < 0 && maxSign < 0) {
+ // move the top up to 0
+ me.max = 0;
+ } else if (minSign > 0 && maxSign > 0) {
+ // move the bottom down to 0
+ me.min = 0;
+ }
+ }
+
+ var setMin = tickOpts.min !== undefined || tickOpts.suggestedMin !== undefined;
+ var setMax = tickOpts.max !== undefined || tickOpts.suggestedMax !== undefined;
+
+ if (tickOpts.min !== undefined) {
+ me.min = tickOpts.min;
+ } else if (tickOpts.suggestedMin !== undefined) {
+ if (me.min === null) {
+ me.min = tickOpts.suggestedMin;
+ } else {
+ me.min = Math.min(me.min, tickOpts.suggestedMin);
+ }
+ }
+
+ if (tickOpts.max !== undefined) {
+ me.max = tickOpts.max;
+ } else if (tickOpts.suggestedMax !== undefined) {
+ if (me.max === null) {
+ me.max = tickOpts.suggestedMax;
+ } else {
+ me.max = Math.max(me.max, tickOpts.suggestedMax);
+ }
+ }
+
+ if (setMin !== setMax) {
+ // We set the min or the max but not both.
+ // So ensure that our range is good
+ // Inverted or 0 length range can happen when
+ // ticks.min is set, and no datasets are visible
+ if (me.min >= me.max) {
+ if (setMin) {
+ me.max = me.min + 1;
+ } else {
+ me.min = me.max - 1;
+ }
+ }
+ }
+
+ if (me.min === me.max) {
+ me.max++;
+
+ if (!tickOpts.beginAtZero) {
+ me.min--;
+ }
+ }
+ },
+
+ getTickLimit: function() {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var stepSize = tickOpts.stepSize;
+ var maxTicksLimit = tickOpts.maxTicksLimit;
+ var maxTicks;
+
+ if (stepSize) {
+ maxTicks = Math.ceil(me.max / stepSize) - Math.floor(me.min / stepSize) + 1;
+ } else {
+ maxTicks = me._computeTickLimit();
+ maxTicksLimit = maxTicksLimit || 11;
+ }
+
+ if (maxTicksLimit) {
+ maxTicks = Math.min(maxTicksLimit, maxTicks);
+ }
+
+ return maxTicks;
+ },
+
+ _computeTickLimit: function() {
+ return Number.POSITIVE_INFINITY;
+ },
+
+ handleDirectionalChanges: noop,
+
+ buildTicks: function() {
+ var me = this;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+
+ // Figure out what the max number of ticks we can support it is based on the size of
+ // the axis area. For now, we say that the minimum tick spacing in pixels must be 40
+ // We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
+ // the graph. Make sure we always have at least 2 ticks
+ var maxTicks = me.getTickLimit();
+ maxTicks = Math.max(2, maxTicks);
+
+ var numericGeneratorOptions = {
+ maxTicks: maxTicks,
+ min: tickOpts.min,
+ max: tickOpts.max,
+ precision: tickOpts.precision,
+ stepSize: helpers$1.valueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize)
+ };
+ var ticks = me.ticks = generateTicks(numericGeneratorOptions, me);
+
+ me.handleDirectionalChanges();
+
+ // At this point, we need to update our max and min given the tick values since we have expanded the
+ // range of the scale
+ me.max = helpers$1.max(ticks);
+ me.min = helpers$1.min(ticks);
+
+ if (tickOpts.reverse) {
+ ticks.reverse();
+
+ me.start = me.max;
+ me.end = me.min;
+ } else {
+ me.start = me.min;
+ me.end = me.max;
+ }
+ },
+
+ convertTicksToLabels: function() {
+ var me = this;
+ me.ticksAsNumbers = me.ticks.slice();
+ me.zeroLineIndex = me.ticks.indexOf(0);
+
+ core_scale.prototype.convertTicksToLabels.call(me);
+ }
+});
+
+var defaultConfig$1 = {
+ position: 'left',
+ ticks: {
+ callback: core_ticks.formatters.linear
+ }
+};
+
+var scale_linear = scale_linearbase.extend({
+ determineDataLimits: function() {
+ var me = this;
+ var opts = me.options;
+ var chart = me.chart;
+ var data = chart.data;
+ var datasets = data.datasets;
+ var isHorizontal = me.isHorizontal();
+ var DEFAULT_MIN = 0;
+ var DEFAULT_MAX = 1;
+
+ function IDMatches(meta) {
+ return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
+ }
+
+ // First Calculate the range
+ me.min = null;
+ me.max = null;
+
+ var hasStacks = opts.stacked;
+ if (hasStacks === undefined) {
+ helpers$1.each(datasets, function(dataset, datasetIndex) {
+ if (hasStacks) {
+ return;
+ }
+
+ var meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
+ meta.stack !== undefined) {
+ hasStacks = true;
+ }
+ });
+ }
+
+ if (opts.stacked || hasStacks) {
+ var valuesPerStack = {};
+
+ helpers$1.each(datasets, function(dataset, datasetIndex) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ var key = [
+ meta.type,
+ // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
+ ((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
+ meta.stack
+ ].join('.');
+
+ if (valuesPerStack[key] === undefined) {
+ valuesPerStack[key] = {
+ positiveValues: [],
+ negativeValues: []
+ };
+ }
+
+ // Store these per type
+ var positiveValues = valuesPerStack[key].positiveValues;
+ var negativeValues = valuesPerStack[key].negativeValues;
+
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ helpers$1.each(dataset.data, function(rawValue, index) {
+ var value = +me.getRightValue(rawValue);
+ if (isNaN(value) || meta.data[index].hidden) {
+ return;
+ }
+
+ positiveValues[index] = positiveValues[index] || 0;
+ negativeValues[index] = negativeValues[index] || 0;
+
+ if (opts.relativePoints) {
+ positiveValues[index] = 100;
+ } else if (value < 0) {
+ negativeValues[index] += value;
+ } else {
+ positiveValues[index] += value;
+ }
+ });
+ }
+ });
+
+ helpers$1.each(valuesPerStack, function(valuesForType) {
+ var values = valuesForType.positiveValues.concat(valuesForType.negativeValues);
+ var minVal = helpers$1.min(values);
+ var maxVal = helpers$1.max(values);
+ me.min = me.min === null ? minVal : Math.min(me.min, minVal);
+ me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
+ });
+
+ } else {
+ helpers$1.each(datasets, function(dataset, datasetIndex) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ helpers$1.each(dataset.data, function(rawValue, index) {
+ var value = +me.getRightValue(rawValue);
+ if (isNaN(value) || meta.data[index].hidden) {
+ return;
+ }
+
+ if (me.min === null) {
+ me.min = value;
+ } else if (value < me.min) {
+ me.min = value;
+ }
+
+ if (me.max === null) {
+ me.max = value;
+ } else if (value > me.max) {
+ me.max = value;
+ }
+ });
+ }
+ });
+ }
+
+ me.min = isFinite(me.min) && !isNaN(me.min) ? me.min : DEFAULT_MIN;
+ me.max = isFinite(me.max) && !isNaN(me.max) ? me.max : DEFAULT_MAX;
+
+ // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
+ this.handleTickRangeOptions();
+ },
+
+ // Returns the maximum number of ticks based on the scale dimension
+ _computeTickLimit: function() {
+ var me = this;
+ var tickFont;
+
+ if (me.isHorizontal()) {
+ return Math.ceil(me.width / 40);
+ }
+ tickFont = helpers$1.options._parseFont(me.options.ticks);
+ return Math.ceil(me.height / tickFont.lineHeight);
+ },
+
+ // Called after the ticks are built. We need
+ handleDirectionalChanges: function() {
+ if (!this.isHorizontal()) {
+ // We are in a vertical orientation. The top value is the highest. So reverse the array
+ this.ticks.reverse();
+ }
+ },
+
+ getLabelForIndex: function(index, datasetIndex) {
+ return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
+ },
+
+ // Utils
+ getPixelForValue: function(value) {
+ // This must be called after fit has been run so that
+ // this.left, this.top, this.right, and this.bottom have been defined
+ var me = this;
+ var start = me.start;
+
+ var rightValue = +me.getRightValue(value);
+ var pixel;
+ var range = me.end - start;
+
+ if (me.isHorizontal()) {
+ pixel = me.left + (me.width / range * (rightValue - start));
+ } else {
+ pixel = me.bottom - (me.height / range * (rightValue - start));
+ }
+ return pixel;
+ },
+
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var isHorizontal = me.isHorizontal();
+ var innerDimension = isHorizontal ? me.width : me.height;
+ var offset = (isHorizontal ? pixel - me.left : me.bottom - pixel) / innerDimension;
+ return me.start + ((me.end - me.start) * offset);
+ },
+
+ getPixelForTick: function(index) {
+ return this.getPixelForValue(this.ticksAsNumbers[index]);
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults$1 = defaultConfig$1;
+scale_linear._defaults = _defaults$1;
+
+var valueOrDefault$a = helpers$1.valueOrDefault;
+
+/**
+ * Generate a set of logarithmic ticks
+ * @param generationOptions the options used to generate the ticks
+ * @param dataRange the range of the data
+ * @returns {number[]} array of tick values
+ */
+function generateTicks$1(generationOptions, dataRange) {
+ var ticks = [];
+
+ var tickVal = valueOrDefault$a(generationOptions.min, Math.pow(10, Math.floor(helpers$1.log10(dataRange.min))));
+
+ var endExp = Math.floor(helpers$1.log10(dataRange.max));
+ var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp));
+ var exp, significand;
+
+ if (tickVal === 0) {
+ exp = Math.floor(helpers$1.log10(dataRange.minNotZero));
+ significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp));
+
+ ticks.push(tickVal);
+ tickVal = significand * Math.pow(10, exp);
+ } else {
+ exp = Math.floor(helpers$1.log10(tickVal));
+ significand = Math.floor(tickVal / Math.pow(10, exp));
+ }
+ var precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1;
+
+ do {
+ ticks.push(tickVal);
+
+ ++significand;
+ if (significand === 10) {
+ significand = 1;
+ ++exp;
+ precision = exp >= 0 ? 1 : precision;
+ }
+
+ tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision;
+ } while (exp < endExp || (exp === endExp && significand < endSignificand));
+
+ var lastTick = valueOrDefault$a(generationOptions.max, tickVal);
+ ticks.push(lastTick);
+
+ return ticks;
+}
+
+var defaultConfig$2 = {
+ position: 'left',
+
+ // label settings
+ ticks: {
+ callback: core_ticks.formatters.logarithmic
+ }
+};
+
+// TODO(v3): change this to positiveOrDefault
+function nonNegativeOrDefault(value, defaultValue) {
+ return helpers$1.isFinite(value) && value >= 0 ? value : defaultValue;
+}
+
+var scale_logarithmic = core_scale.extend({
+ determineDataLimits: function() {
+ var me = this;
+ var opts = me.options;
+ var chart = me.chart;
+ var data = chart.data;
+ var datasets = data.datasets;
+ var isHorizontal = me.isHorizontal();
+ function IDMatches(meta) {
+ return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
+ }
+
+ // Calculate Range
+ me.min = null;
+ me.max = null;
+ me.minNotZero = null;
+
+ var hasStacks = opts.stacked;
+ if (hasStacks === undefined) {
+ helpers$1.each(datasets, function(dataset, datasetIndex) {
+ if (hasStacks) {
+ return;
+ }
+
+ var meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
+ meta.stack !== undefined) {
+ hasStacks = true;
+ }
+ });
+ }
+
+ if (opts.stacked || hasStacks) {
+ var valuesPerStack = {};
+
+ helpers$1.each(datasets, function(dataset, datasetIndex) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ var key = [
+ meta.type,
+ // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
+ ((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
+ meta.stack
+ ].join('.');
+
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ if (valuesPerStack[key] === undefined) {
+ valuesPerStack[key] = [];
+ }
+
+ helpers$1.each(dataset.data, function(rawValue, index) {
+ var values = valuesPerStack[key];
+ var value = +me.getRightValue(rawValue);
+ // invalid, hidden and negative values are ignored
+ if (isNaN(value) || meta.data[index].hidden || value < 0) {
+ return;
+ }
+ values[index] = values[index] || 0;
+ values[index] += value;
+ });
+ }
+ });
+
+ helpers$1.each(valuesPerStack, function(valuesForType) {
+ if (valuesForType.length > 0) {
+ var minVal = helpers$1.min(valuesForType);
+ var maxVal = helpers$1.max(valuesForType);
+ me.min = me.min === null ? minVal : Math.min(me.min, minVal);
+ me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
+ }
+ });
+
+ } else {
+ helpers$1.each(datasets, function(dataset, datasetIndex) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ helpers$1.each(dataset.data, function(rawValue, index) {
+ var value = +me.getRightValue(rawValue);
+ // invalid, hidden and negative values are ignored
+ if (isNaN(value) || meta.data[index].hidden || value < 0) {
+ return;
+ }
+
+ if (me.min === null) {
+ me.min = value;
+ } else if (value < me.min) {
+ me.min = value;
+ }
+
+ if (me.max === null) {
+ me.max = value;
+ } else if (value > me.max) {
+ me.max = value;
+ }
+
+ if (value !== 0 && (me.minNotZero === null || value < me.minNotZero)) {
+ me.minNotZero = value;
+ }
+ });
+ }
+ });
+ }
+
+ // Common base implementation to handle ticks.min, ticks.max
+ this.handleTickRangeOptions();
+ },
+
+ handleTickRangeOptions: function() {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var DEFAULT_MIN = 1;
+ var DEFAULT_MAX = 10;
+
+ me.min = nonNegativeOrDefault(tickOpts.min, me.min);
+ me.max = nonNegativeOrDefault(tickOpts.max, me.max);
+
+ if (me.min === me.max) {
+ if (me.min !== 0 && me.min !== null) {
+ me.min = Math.pow(10, Math.floor(helpers$1.log10(me.min)) - 1);
+ me.max = Math.pow(10, Math.floor(helpers$1.log10(me.max)) + 1);
+ } else {
+ me.min = DEFAULT_MIN;
+ me.max = DEFAULT_MAX;
+ }
+ }
+ if (me.min === null) {
+ me.min = Math.pow(10, Math.floor(helpers$1.log10(me.max)) - 1);
+ }
+ if (me.max === null) {
+ me.max = me.min !== 0
+ ? Math.pow(10, Math.floor(helpers$1.log10(me.min)) + 1)
+ : DEFAULT_MAX;
+ }
+ if (me.minNotZero === null) {
+ if (me.min > 0) {
+ me.minNotZero = me.min;
+ } else if (me.max < 1) {
+ me.minNotZero = Math.pow(10, Math.floor(helpers$1.log10(me.max)));
+ } else {
+ me.minNotZero = DEFAULT_MIN;
+ }
+ }
+ },
+
+ buildTicks: function() {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var reverse = !me.isHorizontal();
+
+ var generationOptions = {
+ min: nonNegativeOrDefault(tickOpts.min),
+ max: nonNegativeOrDefault(tickOpts.max)
+ };
+ var ticks = me.ticks = generateTicks$1(generationOptions, me);
+
+ // At this point, we need to update our max and min given the tick values since we have expanded the
+ // range of the scale
+ me.max = helpers$1.max(ticks);
+ me.min = helpers$1.min(ticks);
+
+ if (tickOpts.reverse) {
+ reverse = !reverse;
+ me.start = me.max;
+ me.end = me.min;
+ } else {
+ me.start = me.min;
+ me.end = me.max;
+ }
+ if (reverse) {
+ ticks.reverse();
+ }
+ },
+
+ convertTicksToLabels: function() {
+ this.tickValues = this.ticks.slice();
+
+ core_scale.prototype.convertTicksToLabels.call(this);
+ },
+
+ // Get the correct tooltip label
+ getLabelForIndex: function(index, datasetIndex) {
+ return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
+ },
+
+ getPixelForTick: function(index) {
+ return this.getPixelForValue(this.tickValues[index]);
+ },
+
+ /**
+ * Returns the value of the first tick.
+ * @param {number} value - The minimum not zero value.
+ * @return {number} The first tick value.
+ * @private
+ */
+ _getFirstTickValue: function(value) {
+ var exp = Math.floor(helpers$1.log10(value));
+ var significand = Math.floor(value / Math.pow(10, exp));
+
+ return significand * Math.pow(10, exp);
+ },
+
+ getPixelForValue: function(value) {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var reverse = tickOpts.reverse;
+ var log10 = helpers$1.log10;
+ var firstTickValue = me._getFirstTickValue(me.minNotZero);
+ var offset = 0;
+ var innerDimension, pixel, start, end, sign;
+
+ value = +me.getRightValue(value);
+ if (reverse) {
+ start = me.end;
+ end = me.start;
+ sign = -1;
+ } else {
+ start = me.start;
+ end = me.end;
+ sign = 1;
+ }
+ if (me.isHorizontal()) {
+ innerDimension = me.width;
+ pixel = reverse ? me.right : me.left;
+ } else {
+ innerDimension = me.height;
+ sign *= -1; // invert, since the upper-left corner of the canvas is at pixel (0, 0)
+ pixel = reverse ? me.top : me.bottom;
+ }
+ if (value !== start) {
+ if (start === 0) { // include zero tick
+ offset = valueOrDefault$a(tickOpts.fontSize, core_defaults.global.defaultFontSize);
+ innerDimension -= offset;
+ start = firstTickValue;
+ }
+ if (value !== 0) {
+ offset += innerDimension / (log10(end) - log10(start)) * (log10(value) - log10(start));
+ }
+ pixel += sign * offset;
+ }
+ return pixel;
+ },
+
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var reverse = tickOpts.reverse;
+ var log10 = helpers$1.log10;
+ var firstTickValue = me._getFirstTickValue(me.minNotZero);
+ var innerDimension, start, end, value;
+
+ if (reverse) {
+ start = me.end;
+ end = me.start;
+ } else {
+ start = me.start;
+ end = me.end;
+ }
+ if (me.isHorizontal()) {
+ innerDimension = me.width;
+ value = reverse ? me.right - pixel : pixel - me.left;
+ } else {
+ innerDimension = me.height;
+ value = reverse ? pixel - me.top : me.bottom - pixel;
+ }
+ if (value !== start) {
+ if (start === 0) { // include zero tick
+ var offset = valueOrDefault$a(tickOpts.fontSize, core_defaults.global.defaultFontSize);
+ value -= offset;
+ innerDimension -= offset;
+ start = firstTickValue;
+ }
+ value *= log10(end) - log10(start);
+ value /= innerDimension;
+ value = Math.pow(10, log10(start) + value);
+ }
+ return value;
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults$2 = defaultConfig$2;
+scale_logarithmic._defaults = _defaults$2;
+
+var valueOrDefault$b = helpers$1.valueOrDefault;
+var valueAtIndexOrDefault$1 = helpers$1.valueAtIndexOrDefault;
+var resolve$7 = helpers$1.options.resolve;
+
+var defaultConfig$3 = {
+ display: true,
+
+ // Boolean - Whether to animate scaling the chart from the centre
+ animate: true,
+ position: 'chartArea',
+
+ angleLines: {
+ display: true,
+ color: 'rgba(0, 0, 0, 0.1)',
+ lineWidth: 1,
+ borderDash: [],
+ borderDashOffset: 0.0
+ },
+
+ gridLines: {
+ circular: false
+ },
+
+ // label settings
+ ticks: {
+ // Boolean - Show a backdrop to the scale label
+ showLabelBackdrop: true,
+
+ // String - The colour of the label backdrop
+ backdropColor: 'rgba(255,255,255,0.75)',
+
+ // Number - The backdrop padding above & below the label in pixels
+ backdropPaddingY: 2,
+
+ // Number - The backdrop padding to the side of the label in pixels
+ backdropPaddingX: 2,
+
+ callback: core_ticks.formatters.linear
+ },
+
+ pointLabels: {
+ // Boolean - if true, show point labels
+ display: true,
+
+ // Number - Point label font size in pixels
+ fontSize: 10,
+
+ // Function - Used to convert point labels
+ callback: function(label) {
+ return label;
+ }
+ }
+};
+
+function getValueCount(scale) {
+ var opts = scale.options;
+ return opts.angleLines.display || opts.pointLabels.display ? scale.chart.data.labels.length : 0;
+}
+
+function getTickBackdropHeight(opts) {
+ var tickOpts = opts.ticks;
+
+ if (tickOpts.display && opts.display) {
+ return valueOrDefault$b(tickOpts.fontSize, core_defaults.global.defaultFontSize) + tickOpts.backdropPaddingY * 2;
+ }
+ return 0;
+}
+
+function measureLabelSize(ctx, lineHeight, label) {
+ if (helpers$1.isArray(label)) {
+ return {
+ w: helpers$1.longestText(ctx, ctx.font, label),
+ h: label.length * lineHeight
+ };
+ }
+
+ return {
+ w: ctx.measureText(label).width,
+ h: lineHeight
+ };
+}
+
+function determineLimits(angle, pos, size, min, max) {
+ if (angle === min || angle === max) {
+ return {
+ start: pos - (size / 2),
+ end: pos + (size / 2)
+ };
+ } else if (angle < min || angle > max) {
+ return {
+ start: pos - size,
+ end: pos
+ };
+ }
+
+ return {
+ start: pos,
+ end: pos + size
+ };
+}
+
+/**
+ * Helper function to fit a radial linear scale with point labels
+ */
+function fitWithPointLabels(scale) {
+
+ // Right, this is really confusing and there is a lot of maths going on here
+ // The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
+ //
+ // Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
+ //
+ // Solution:
+ //
+ // We assume the radius of the polygon is half the size of the canvas at first
+ // at each index we check if the text overlaps.
+ //
+ // Where it does, we store that angle and that index.
+ //
+ // After finding the largest index and angle we calculate how much we need to remove
+ // from the shape radius to move the point inwards by that x.
+ //
+ // We average the left and right distances to get the maximum shape radius that can fit in the box
+ // along with labels.
+ //
+ // Once we have that, we can find the centre point for the chart, by taking the x text protrusion
+ // on each side, removing that from the size, halving it and adding the left x protrusion width.
+ //
+ // This will mean we have a shape fitted to the canvas, as large as it can be with the labels
+ // and position it in the most space efficient manner
+ //
+ // https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif
+
+ var plFont = helpers$1.options._parseFont(scale.options.pointLabels);
+
+ // Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.
+ // Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points
+ var furthestLimits = {
+ l: 0,
+ r: scale.width,
+ t: 0,
+ b: scale.height - scale.paddingTop
+ };
+ var furthestAngles = {};
+ var i, textSize, pointPosition;
+
+ scale.ctx.font = plFont.string;
+ scale._pointLabelSizes = [];
+
+ var valueCount = getValueCount(scale);
+ for (i = 0; i < valueCount; i++) {
+ pointPosition = scale.getPointPosition(i, scale.drawingArea + 5);
+ textSize = measureLabelSize(scale.ctx, plFont.lineHeight, scale.pointLabels[i] || '');
+ scale._pointLabelSizes[i] = textSize;
+
+ // Add quarter circle to make degree 0 mean top of circle
+ var angleRadians = scale.getIndexAngle(i);
+ var angle = helpers$1.toDegrees(angleRadians) % 360;
+ var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);
+ var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);
+
+ if (hLimits.start < furthestLimits.l) {
+ furthestLimits.l = hLimits.start;
+ furthestAngles.l = angleRadians;
+ }
+
+ if (hLimits.end > furthestLimits.r) {
+ furthestLimits.r = hLimits.end;
+ furthestAngles.r = angleRadians;
+ }
+
+ if (vLimits.start < furthestLimits.t) {
+ furthestLimits.t = vLimits.start;
+ furthestAngles.t = angleRadians;
+ }
+
+ if (vLimits.end > furthestLimits.b) {
+ furthestLimits.b = vLimits.end;
+ furthestAngles.b = angleRadians;
+ }
+ }
+
+ scale.setReductions(scale.drawingArea, furthestLimits, furthestAngles);
+}
+
+function getTextAlignForAngle(angle) {
+ if (angle === 0 || angle === 180) {
+ return 'center';
+ } else if (angle < 180) {
+ return 'left';
+ }
+
+ return 'right';
+}
+
+function fillText(ctx, text, position, lineHeight) {
+ var y = position.y + lineHeight / 2;
+ var i, ilen;
+
+ if (helpers$1.isArray(text)) {
+ for (i = 0, ilen = text.length; i < ilen; ++i) {
+ ctx.fillText(text[i], position.x, y);
+ y += lineHeight;
+ }
+ } else {
+ ctx.fillText(text, position.x, y);
+ }
+}
+
+function adjustPointPositionForLabelHeight(angle, textSize, position) {
+ if (angle === 90 || angle === 270) {
+ position.y -= (textSize.h / 2);
+ } else if (angle > 270 || angle < 90) {
+ position.y -= textSize.h;
+ }
+}
+
+function drawPointLabels(scale) {
+ var ctx = scale.ctx;
+ var opts = scale.options;
+ var angleLineOpts = opts.angleLines;
+ var gridLineOpts = opts.gridLines;
+ var pointLabelOpts = opts.pointLabels;
+ var lineWidth = valueOrDefault$b(angleLineOpts.lineWidth, gridLineOpts.lineWidth);
+ var lineColor = valueOrDefault$b(angleLineOpts.color, gridLineOpts.color);
+ var tickBackdropHeight = getTickBackdropHeight(opts);
+
+ ctx.save();
+ ctx.lineWidth = lineWidth;
+ ctx.strokeStyle = lineColor;
+ if (ctx.setLineDash) {
+ ctx.setLineDash(resolve$7([angleLineOpts.borderDash, gridLineOpts.borderDash, []]));
+ ctx.lineDashOffset = resolve$7([angleLineOpts.borderDashOffset, gridLineOpts.borderDashOffset, 0.0]);
+ }
+
+ var outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max);
+
+ // Point Label Font
+ var plFont = helpers$1.options._parseFont(pointLabelOpts);
+
+ ctx.font = plFont.string;
+ ctx.textBaseline = 'middle';
+
+ for (var i = getValueCount(scale) - 1; i >= 0; i--) {
+ if (angleLineOpts.display && lineWidth && lineColor) {
+ var outerPosition = scale.getPointPosition(i, outerDistance);
+ ctx.beginPath();
+ ctx.moveTo(scale.xCenter, scale.yCenter);
+ ctx.lineTo(outerPosition.x, outerPosition.y);
+ ctx.stroke();
+ }
+
+ if (pointLabelOpts.display) {
+ // Extra pixels out for some label spacing
+ var extra = (i === 0 ? tickBackdropHeight / 2 : 0);
+ var pointLabelPosition = scale.getPointPosition(i, outerDistance + extra + 5);
+
+ // Keep this in loop since we may support array properties here
+ var pointLabelFontColor = valueAtIndexOrDefault$1(pointLabelOpts.fontColor, i, core_defaults.global.defaultFontColor);
+ ctx.fillStyle = pointLabelFontColor;
+
+ var angleRadians = scale.getIndexAngle(i);
+ var angle = helpers$1.toDegrees(angleRadians);
+ ctx.textAlign = getTextAlignForAngle(angle);
+ adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition);
+ fillText(ctx, scale.pointLabels[i] || '', pointLabelPosition, plFont.lineHeight);
+ }
+ }
+ ctx.restore();
+}
+
+function drawRadiusLine(scale, gridLineOpts, radius, index) {
+ var ctx = scale.ctx;
+ var circular = gridLineOpts.circular;
+ var valueCount = getValueCount(scale);
+ var lineColor = valueAtIndexOrDefault$1(gridLineOpts.color, index - 1);
+ var lineWidth = valueAtIndexOrDefault$1(gridLineOpts.lineWidth, index - 1);
+ var pointPosition;
+
+ if ((!circular && !valueCount) || !lineColor || !lineWidth) {
+ return;
+ }
+
+ ctx.save();
+ ctx.strokeStyle = lineColor;
+ ctx.lineWidth = lineWidth;
+ if (ctx.setLineDash) {
+ ctx.setLineDash(gridLineOpts.borderDash || []);
+ ctx.lineDashOffset = gridLineOpts.borderDashOffset || 0.0;
+ }
+
+ ctx.beginPath();
+ if (circular) {
+ // Draw circular arcs between the points
+ ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2);
+ } else {
+ // Draw straight lines connecting each index
+ pointPosition = scale.getPointPosition(0, radius);
+ ctx.moveTo(pointPosition.x, pointPosition.y);
+
+ for (var i = 1; i < valueCount; i++) {
+ pointPosition = scale.getPointPosition(i, radius);
+ ctx.lineTo(pointPosition.x, pointPosition.y);
+ }
+ }
+ ctx.closePath();
+ ctx.stroke();
+ ctx.restore();
+}
+
+function numberOrZero(param) {
+ return helpers$1.isNumber(param) ? param : 0;
+}
+
+var scale_radialLinear = scale_linearbase.extend({
+ setDimensions: function() {
+ var me = this;
+
+ // Set the unconstrained dimension before label rotation
+ me.width = me.maxWidth;
+ me.height = me.maxHeight;
+ me.paddingTop = getTickBackdropHeight(me.options) / 2;
+ me.xCenter = Math.floor(me.width / 2);
+ me.yCenter = Math.floor((me.height - me.paddingTop) / 2);
+ me.drawingArea = Math.min(me.height - me.paddingTop, me.width) / 2;
+ },
+
+ determineDataLimits: function() {
+ var me = this;
+ var chart = me.chart;
+ var min = Number.POSITIVE_INFINITY;
+ var max = Number.NEGATIVE_INFINITY;
+
+ helpers$1.each(chart.data.datasets, function(dataset, datasetIndex) {
+ if (chart.isDatasetVisible(datasetIndex)) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+
+ helpers$1.each(dataset.data, function(rawValue, index) {
+ var value = +me.getRightValue(rawValue);
+ if (isNaN(value) || meta.data[index].hidden) {
+ return;
+ }
+
+ min = Math.min(value, min);
+ max = Math.max(value, max);
+ });
+ }
+ });
+
+ me.min = (min === Number.POSITIVE_INFINITY ? 0 : min);
+ me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max);
+
+ // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
+ me.handleTickRangeOptions();
+ },
+
+ // Returns the maximum number of ticks based on the scale dimension
+ _computeTickLimit: function() {
+ return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options));
+ },
+
+ convertTicksToLabels: function() {
+ var me = this;
+
+ scale_linearbase.prototype.convertTicksToLabels.call(me);
+
+ // Point labels
+ me.pointLabels = me.chart.data.labels.map(me.options.pointLabels.callback, me);
+ },
+
+ getLabelForIndex: function(index, datasetIndex) {
+ return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
+ },
+
+ fit: function() {
+ var me = this;
+ var opts = me.options;
+
+ if (opts.display && opts.pointLabels.display) {
+ fitWithPointLabels(me);
+ } else {
+ me.setCenterPoint(0, 0, 0, 0);
+ }
+ },
+
+ /**
+ * Set radius reductions and determine new radius and center point
+ * @private
+ */
+ setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) {
+ var me = this;
+ var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l);
+ var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r);
+ var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t);
+ var radiusReductionBottom = -Math.max(furthestLimits.b - (me.height - me.paddingTop), 0) / Math.cos(furthestAngles.b);
+
+ radiusReductionLeft = numberOrZero(radiusReductionLeft);
+ radiusReductionRight = numberOrZero(radiusReductionRight);
+ radiusReductionTop = numberOrZero(radiusReductionTop);
+ radiusReductionBottom = numberOrZero(radiusReductionBottom);
+
+ me.drawingArea = Math.min(
+ Math.floor(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2),
+ Math.floor(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2));
+ me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom);
+ },
+
+ setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) {
+ var me = this;
+ var maxRight = me.width - rightMovement - me.drawingArea;
+ var maxLeft = leftMovement + me.drawingArea;
+ var maxTop = topMovement + me.drawingArea;
+ var maxBottom = (me.height - me.paddingTop) - bottomMovement - me.drawingArea;
+
+ me.xCenter = Math.floor(((maxLeft + maxRight) / 2) + me.left);
+ me.yCenter = Math.floor(((maxTop + maxBottom) / 2) + me.top + me.paddingTop);
+ },
+
+ getIndexAngle: function(index) {
+ var angleMultiplier = (Math.PI * 2) / getValueCount(this);
+ var startAngle = this.chart.options && this.chart.options.startAngle ?
+ this.chart.options.startAngle :
+ 0;
+
+ var startAngleRadians = startAngle * Math.PI * 2 / 360;
+
+ // Start from the top instead of right, so remove a quarter of the circle
+ return index * angleMultiplier + startAngleRadians;
+ },
+
+ getDistanceFromCenterForValue: function(value) {
+ var me = this;
+
+ if (value === null) {
+ return 0; // null always in center
+ }
+
+ // Take into account half font size + the yPadding of the top value
+ var scalingFactor = me.drawingArea / (me.max - me.min);
+ if (me.options.ticks.reverse) {
+ return (me.max - value) * scalingFactor;
+ }
+ return (value - me.min) * scalingFactor;
+ },
+
+ getPointPosition: function(index, distanceFromCenter) {
+ var me = this;
+ var thisAngle = me.getIndexAngle(index) - (Math.PI / 2);
+ return {
+ x: Math.cos(thisAngle) * distanceFromCenter + me.xCenter,
+ y: Math.sin(thisAngle) * distanceFromCenter + me.yCenter
+ };
+ },
+
+ getPointPositionForValue: function(index, value) {
+ return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));
+ },
+
+ getBasePosition: function() {
+ var me = this;
+ var min = me.min;
+ var max = me.max;
+
+ return me.getPointPositionForValue(0,
+ me.beginAtZero ? 0 :
+ min < 0 && max < 0 ? max :
+ min > 0 && max > 0 ? min :
+ 0);
+ },
+
+ draw: function() {
+ var me = this;
+ var opts = me.options;
+ var gridLineOpts = opts.gridLines;
+ var tickOpts = opts.ticks;
+
+ if (opts.display) {
+ var ctx = me.ctx;
+ var startAngle = this.getIndexAngle(0);
+ var tickFont = helpers$1.options._parseFont(tickOpts);
+
+ if (opts.angleLines.display || opts.pointLabels.display) {
+ drawPointLabels(me);
+ }
+
+ helpers$1.each(me.ticks, function(label, index) {
+ // Don't draw a centre value (if it is minimum)
+ if (index > 0 || tickOpts.reverse) {
+ var yCenterOffset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]);
+
+ // Draw circular lines around the scale
+ if (gridLineOpts.display && index !== 0) {
+ drawRadiusLine(me, gridLineOpts, yCenterOffset, index);
+ }
+
+ if (tickOpts.display) {
+ var tickFontColor = valueOrDefault$b(tickOpts.fontColor, core_defaults.global.defaultFontColor);
+ ctx.font = tickFont.string;
+
+ ctx.save();
+ ctx.translate(me.xCenter, me.yCenter);
+ ctx.rotate(startAngle);
+
+ if (tickOpts.showLabelBackdrop) {
+ var labelWidth = ctx.measureText(label).width;
+ ctx.fillStyle = tickOpts.backdropColor;
+ ctx.fillRect(
+ -labelWidth / 2 - tickOpts.backdropPaddingX,
+ -yCenterOffset - tickFont.size / 2 - tickOpts.backdropPaddingY,
+ labelWidth + tickOpts.backdropPaddingX * 2,
+ tickFont.size + tickOpts.backdropPaddingY * 2
+ );
+ }
+
+ ctx.textAlign = 'center';
+ ctx.textBaseline = 'middle';
+ ctx.fillStyle = tickFontColor;
+ ctx.fillText(label, 0, -yCenterOffset);
+ ctx.restore();
+ }
+ }
+ });
+ }
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults$3 = defaultConfig$3;
+scale_radialLinear._defaults = _defaults$3;
+
+var valueOrDefault$c = helpers$1.valueOrDefault;
+
+// Integer constants are from the ES6 spec.
+var MIN_INTEGER = Number.MIN_SAFE_INTEGER || -9007199254740991;
+var MAX_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;
+
+var INTERVALS = {
+ millisecond: {
+ common: true,
+ size: 1,
+ steps: [1, 2, 5, 10, 20, 50, 100, 250, 500]
+ },
+ second: {
+ common: true,
+ size: 1000,
+ steps: [1, 2, 5, 10, 15, 30]
+ },
+ minute: {
+ common: true,
+ size: 60000,
+ steps: [1, 2, 5, 10, 15, 30]
+ },
+ hour: {
+ common: true,
+ size: 3600000,
+ steps: [1, 2, 3, 6, 12]
+ },
+ day: {
+ common: true,
+ size: 86400000,
+ steps: [1, 2, 5]
+ },
+ week: {
+ common: false,
+ size: 604800000,
+ steps: [1, 2, 3, 4]
+ },
+ month: {
+ common: true,
+ size: 2.628e9,
+ steps: [1, 2, 3]
+ },
+ quarter: {
+ common: false,
+ size: 7.884e9,
+ steps: [1, 2, 3, 4]
+ },
+ year: {
+ common: true,
+ size: 3.154e10
+ }
+};
+
+var UNITS = Object.keys(INTERVALS);
+
+function sorter(a, b) {
+ return a - b;
+}
+
+function arrayUnique(items) {
+ var hash = {};
+ var out = [];
+ var i, ilen, item;
+
+ for (i = 0, ilen = items.length; i < ilen; ++i) {
+ item = items[i];
+ if (!hash[item]) {
+ hash[item] = true;
+ out.push(item);
+ }
+ }
+
+ return out;
+}
+
+/**
+ * Returns an array of {time, pos} objects used to interpolate a specific `time` or position
+ * (`pos`) on the scale, by searching entries before and after the requested value. `pos` is
+ * a decimal between 0 and 1: 0 being the start of the scale (left or top) and 1 the other
+ * extremity (left + width or top + height). Note that it would be more optimized to directly
+ * store pre-computed pixels, but the scale dimensions are not guaranteed at the time we need
+ * to create the lookup table. The table ALWAYS contains at least two items: min and max.
+ *
+ * @param {number[]} timestamps - timestamps sorted from lowest to highest.
+ * @param {string} distribution - If 'linear', timestamps will be spread linearly along the min
+ * and max range, so basically, the table will contains only two items: {min, 0} and {max, 1}.
+ * If 'series', timestamps will be positioned at the same distance from each other. In this
+ * case, only timestamps that break the time linearity are registered, meaning that in the
+ * best case, all timestamps are linear, the table contains only min and max.
+ */
+function buildLookupTable(timestamps, min, max, distribution) {
+ if (distribution === 'linear' || !timestamps.length) {
+ return [
+ {time: min, pos: 0},
+ {time: max, pos: 1}
+ ];
+ }
+
+ var table = [];
+ var items = [min];
+ var i, ilen, prev, curr, next;
+
+ for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
+ curr = timestamps[i];
+ if (curr > min && curr < max) {
+ items.push(curr);
+ }
+ }
+
+ items.push(max);
+
+ for (i = 0, ilen = items.length; i < ilen; ++i) {
+ next = items[i + 1];
+ prev = items[i - 1];
+ curr = items[i];
+
+ // only add points that breaks the scale linearity
+ if (prev === undefined || next === undefined || Math.round((next + prev) / 2) !== curr) {
+ table.push({time: curr, pos: i / (ilen - 1)});
+ }
+ }
+
+ return table;
+}
+
+// @see adapted from https://www.anujgakhar.com/2014/03/01/binary-search-in-javascript/
+function lookup(table, key, value) {
+ var lo = 0;
+ var hi = table.length - 1;
+ var mid, i0, i1;
+
+ while (lo >= 0 && lo <= hi) {
+ mid = (lo + hi) >> 1;
+ i0 = table[mid - 1] || null;
+ i1 = table[mid];
+
+ if (!i0) {
+ // given value is outside table (before first item)
+ return {lo: null, hi: i1};
+ } else if (i1[key] < value) {
+ lo = mid + 1;
+ } else if (i0[key] > value) {
+ hi = mid - 1;
+ } else {
+ return {lo: i0, hi: i1};
+ }
+ }
+
+ // given value is outside table (after last item)
+ return {lo: i1, hi: null};
+}
+
+/**
+ * Linearly interpolates the given source `value` using the table items `skey` values and
+ * returns the associated `tkey` value. For example, interpolate(table, 'time', 42, 'pos')
+ * returns the position for a timestamp equal to 42. If value is out of bounds, values at
+ * index [0, 1] or [n - 1, n] are used for the interpolation.
+ */
+function interpolate$1(table, skey, sval, tkey) {
+ var range = lookup(table, skey, sval);
+
+ // Note: the lookup table ALWAYS contains at least 2 items (min and max)
+ var prev = !range.lo ? table[0] : !range.hi ? table[table.length - 2] : range.lo;
+ var next = !range.lo ? table[1] : !range.hi ? table[table.length - 1] : range.hi;
+
+ var span = next[skey] - prev[skey];
+ var ratio = span ? (sval - prev[skey]) / span : 0;
+ var offset = (next[tkey] - prev[tkey]) * ratio;
+
+ return prev[tkey] + offset;
+}
+
+function toTimestamp(scale, input) {
+ var adapter = scale._adapter;
+ var options = scale.options.time;
+ var parser = options.parser;
+ var format = parser || options.format;
+ var value = input;
+
+ if (typeof parser === 'function') {
+ value = parser(value);
+ }
+
+ // Only parse if its not a timestamp already
+ if (!helpers$1.isFinite(value)) {
+ value = typeof format === 'string'
+ ? adapter.parse(value, format)
+ : adapter.parse(value);
+ }
+
+ if (value !== null) {
+ return +value;
+ }
+
+ // Labels are in an incompatible format and no `parser` has been provided.
+ // The user might still use the deprecated `format` option for parsing.
+ if (!parser && typeof format === 'function') {
+ value = format(input);
+
+ // `format` could return something else than a timestamp, if so, parse it
+ if (!helpers$1.isFinite(value)) {
+ value = adapter.parse(value);
+ }
+ }
+
+ return value;
+}
+
+function parse(scale, input) {
+ if (helpers$1.isNullOrUndef(input)) {
+ return null;
+ }
+
+ var options = scale.options.time;
+ var value = toTimestamp(scale, scale.getRightValue(input));
+ if (value === null) {
+ return value;
+ }
+
+ if (options.round) {
+ value = +scale._adapter.startOf(value, options.round);
+ }
+
+ return value;
+}
+
+/**
+ * Returns the number of unit to skip to be able to display up to `capacity` number of ticks
+ * in `unit` for the given `min` / `max` range and respecting the interval steps constraints.
+ */
+function determineStepSize(min, max, unit, capacity) {
+ var range = max - min;
+ var interval = INTERVALS[unit];
+ var milliseconds = interval.size;
+ var steps = interval.steps;
+ var i, ilen, factor;
+
+ if (!steps) {
+ return Math.ceil(range / (capacity * milliseconds));
+ }
+
+ for (i = 0, ilen = steps.length; i < ilen; ++i) {
+ factor = steps[i];
+ if (Math.ceil(range / (milliseconds * factor)) <= capacity) {
+ break;
+ }
+ }
+
+ return factor;
+}
+
+/**
+ * Figures out what unit results in an appropriate number of auto-generated ticks
+ */
+function determineUnitForAutoTicks(minUnit, min, max, capacity) {
+ var ilen = UNITS.length;
+ var i, interval, factor;
+
+ for (i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) {
+ interval = INTERVALS[UNITS[i]];
+ factor = interval.steps ? interval.steps[interval.steps.length - 1] : MAX_INTEGER;
+
+ if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) {
+ return UNITS[i];
+ }
+ }
+
+ return UNITS[ilen - 1];
+}
+
+/**
+ * Figures out what unit to format a set of ticks with
+ */
+function determineUnitForFormatting(scale, ticks, minUnit, min, max) {
+ var ilen = UNITS.length;
+ var i, unit;
+
+ for (i = ilen - 1; i >= UNITS.indexOf(minUnit); i--) {
+ unit = UNITS[i];
+ if (INTERVALS[unit].common && scale._adapter.diff(max, min, unit) >= ticks.length) {
+ return unit;
+ }
+ }
+
+ return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0];
+}
+
+function determineMajorUnit(unit) {
+ for (var i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) {
+ if (INTERVALS[UNITS[i]].common) {
+ return UNITS[i];
+ }
+ }
+}
+
+/**
+ * Generates a maximum of `capacity` timestamps between min and max, rounded to the
+ * `minor` unit, aligned on the `major` unit and using the given scale time `options`.
+ * Important: this method can return ticks outside the min and max range, it's the
+ * responsibility of the calling code to clamp values if needed.
+ */
+function generate(scale, min, max, capacity) {
+ var adapter = scale._adapter;
+ var options = scale.options;
+ var timeOpts = options.time;
+ var minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, capacity);
+ var major = determineMajorUnit(minor);
+ var stepSize = valueOrDefault$c(timeOpts.stepSize, timeOpts.unitStepSize);
+ var weekday = minor === 'week' ? timeOpts.isoWeekday : false;
+ var majorTicksEnabled = options.ticks.major.enabled;
+ var interval = INTERVALS[minor];
+ var first = min;
+ var last = max;
+ var ticks = [];
+ var time;
+
+ if (!stepSize) {
+ stepSize = determineStepSize(min, max, minor, capacity);
+ }
+
+ // For 'week' unit, handle the first day of week option
+ if (weekday) {
+ first = +adapter.startOf(first, 'isoWeek', weekday);
+ last = +adapter.startOf(last, 'isoWeek', weekday);
+ }
+
+ // Align first/last ticks on unit
+ first = +adapter.startOf(first, weekday ? 'day' : minor);
+ last = +adapter.startOf(last, weekday ? 'day' : minor);
+
+ // Make sure that the last tick include max
+ if (last < max) {
+ last = +adapter.add(last, 1, minor);
+ }
+
+ time = first;
+
+ if (majorTicksEnabled && major && !weekday && !timeOpts.round) {
+ // Align the first tick on the previous `minor` unit aligned on the `major` unit:
+ // we first aligned time on the previous `major` unit then add the number of full
+ // stepSize there is between first and the previous major time.
+ time = +adapter.startOf(time, major);
+ time = +adapter.add(time, ~~((first - time) / (interval.size * stepSize)) * stepSize, minor);
+ }
+
+ for (; time < last; time = +adapter.add(time, stepSize, minor)) {
+ ticks.push(+time);
+ }
+
+ ticks.push(+time);
+
+ return ticks;
+}
+
+/**
+ * Returns the start and end offsets from edges in the form of {start, end}
+ * where each value is a relative width to the scale and ranges between 0 and 1.
+ * They add extra margins on the both sides by scaling down the original scale.
+ * Offsets are added when the `offset` option is true.
+ */
+function computeOffsets(table, ticks, min, max, options) {
+ var start = 0;
+ var end = 0;
+ var first, last;
+
+ if (options.offset && ticks.length) {
+ if (!options.time.min) {
+ first = interpolate$1(table, 'time', ticks[0], 'pos');
+ if (ticks.length === 1) {
+ start = 1 - first;
+ } else {
+ start = (interpolate$1(table, 'time', ticks[1], 'pos') - first) / 2;
+ }
+ }
+ if (!options.time.max) {
+ last = interpolate$1(table, 'time', ticks[ticks.length - 1], 'pos');
+ if (ticks.length === 1) {
+ end = last;
+ } else {
+ end = (last - interpolate$1(table, 'time', ticks[ticks.length - 2], 'pos')) / 2;
+ }
+ }
+ }
+
+ return {start: start, end: end};
+}
+
+function ticksFromTimestamps(scale, values, majorUnit) {
+ var ticks = [];
+ var i, ilen, value, major;
+
+ for (i = 0, ilen = values.length; i < ilen; ++i) {
+ value = values[i];
+ major = majorUnit ? value === +scale._adapter.startOf(value, majorUnit) : false;
+
+ ticks.push({
+ value: value,
+ major: major
+ });
+ }
+
+ return ticks;
+}
+
+var defaultConfig$4 = {
+ position: 'bottom',
+
+ /**
+ * Data distribution along the scale:
+ * - 'linear': data are spread according to their time (distances can vary),
+ * - 'series': data are spread at the same distance from each other.
+ * @see https://github.com/chartjs/Chart.js/pull/4507
+ * @since 2.7.0
+ */
+ distribution: 'linear',
+
+ /**
+ * Scale boundary strategy (bypassed by min/max time options)
+ * - `data`: make sure data are fully visible, ticks outside are removed
+ * - `ticks`: make sure ticks are fully visible, data outside are truncated
+ * @see https://github.com/chartjs/Chart.js/pull/4556
+ * @since 2.7.0
+ */
+ bounds: 'data',
+
+ adapters: {},
+ time: {
+ parser: false, // false == a pattern string from https://momentjs.com/docs/#/parsing/string-format/ or a custom callback that converts its argument to a moment
+ format: false, // DEPRECATED false == date objects, moment object, callback or a pattern string from https://momentjs.com/docs/#/parsing/string-format/
+ unit: false, // false == automatic or override with week, month, year, etc.
+ round: false, // none, or override with week, month, year, etc.
+ displayFormat: false, // DEPRECATED
+ isoWeekday: false, // override week start day - see https://momentjs.com/docs/#/get-set/iso-weekday/
+ minUnit: 'millisecond',
+ displayFormats: {}
+ },
+ ticks: {
+ autoSkip: false,
+
+ /**
+ * Ticks generation input values:
+ * - 'auto': generates "optimal" ticks based on scale size and time options.
+ * - 'data': generates ticks from data (including labels from data {t|x|y} objects).
+ * - 'labels': generates ticks from user given `data.labels` values ONLY.
+ * @see https://github.com/chartjs/Chart.js/pull/4507
+ * @since 2.7.0
+ */
+ source: 'auto',
+
+ major: {
+ enabled: false
+ }
+ }
+};
+
+var scale_time = core_scale.extend({
+ initialize: function() {
+ this.mergeTicksOptions();
+ core_scale.prototype.initialize.call(this);
+ },
+
+ update: function() {
+ var me = this;
+ var options = me.options;
+ var time = options.time || (options.time = {});
+ var adapter = me._adapter = new core_adapters._date(options.adapters.date);
+
+ // DEPRECATIONS: output a message only one time per update
+ if (time.format) {
+ console.warn('options.time.format is deprecated and replaced by options.time.parser.');
+ }
+
+ // Backward compatibility: before introducing adapter, `displayFormats` was
+ // supposed to contain *all* unit/string pairs but this can't be resolved
+ // when loading the scale (adapters are loaded afterward), so let's populate
+ // missing formats on update
+ helpers$1.mergeIf(time.displayFormats, adapter.formats());
+
+ return core_scale.prototype.update.apply(me, arguments);
+ },
+
+ /**
+ * Allows data to be referenced via 't' attribute
+ */
+ getRightValue: function(rawValue) {
+ if (rawValue && rawValue.t !== undefined) {
+ rawValue = rawValue.t;
+ }
+ return core_scale.prototype.getRightValue.call(this, rawValue);
+ },
+
+ determineDataLimits: function() {
+ var me = this;
+ var chart = me.chart;
+ var adapter = me._adapter;
+ var timeOpts = me.options.time;
+ var unit = timeOpts.unit || 'day';
+ var min = MAX_INTEGER;
+ var max = MIN_INTEGER;
+ var timestamps = [];
+ var datasets = [];
+ var labels = [];
+ var i, j, ilen, jlen, data, timestamp;
+ var dataLabels = chart.data.labels || [];
+
+ // Convert labels to timestamps
+ for (i = 0, ilen = dataLabels.length; i < ilen; ++i) {
+ labels.push(parse(me, dataLabels[i]));
+ }
+
+ // Convert data to timestamps
+ for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
+ if (chart.isDatasetVisible(i)) {
+ data = chart.data.datasets[i].data;
+
+ // Let's consider that all data have the same format.
+ if (helpers$1.isObject(data[0])) {
+ datasets[i] = [];
+
+ for (j = 0, jlen = data.length; j < jlen; ++j) {
+ timestamp = parse(me, data[j]);
+ timestamps.push(timestamp);
+ datasets[i][j] = timestamp;
+ }
+ } else {
+ for (j = 0, jlen = labels.length; j < jlen; ++j) {
+ timestamps.push(labels[j]);
+ }
+ datasets[i] = labels.slice(0);
+ }
+ } else {
+ datasets[i] = [];
+ }
+ }
+
+ if (labels.length) {
+ // Sort labels **after** data have been converted
+ labels = arrayUnique(labels).sort(sorter);
+ min = Math.min(min, labels[0]);
+ max = Math.max(max, labels[labels.length - 1]);
+ }
+
+ if (timestamps.length) {
+ timestamps = arrayUnique(timestamps).sort(sorter);
+ min = Math.min(min, timestamps[0]);
+ max = Math.max(max, timestamps[timestamps.length - 1]);
+ }
+
+ min = parse(me, timeOpts.min) || min;
+ max = parse(me, timeOpts.max) || max;
+
+ // In case there is no valid min/max, set limits based on unit time option
+ min = min === MAX_INTEGER ? +adapter.startOf(Date.now(), unit) : min;
+ max = max === MIN_INTEGER ? +adapter.endOf(Date.now(), unit) + 1 : max;
+
+ // Make sure that max is strictly higher than min (required by the lookup table)
+ me.min = Math.min(min, max);
+ me.max = Math.max(min + 1, max);
+
+ // PRIVATE
+ me._horizontal = me.isHorizontal();
+ me._table = [];
+ me._timestamps = {
+ data: timestamps,
+ datasets: datasets,
+ labels: labels
+ };
+ },
+
+ buildTicks: function() {
+ var me = this;
+ var min = me.min;
+ var max = me.max;
+ var options = me.options;
+ var timeOpts = options.time;
+ var timestamps = [];
+ var ticks = [];
+ var i, ilen, timestamp;
+
+ switch (options.ticks.source) {
+ case 'data':
+ timestamps = me._timestamps.data;
+ break;
+ case 'labels':
+ timestamps = me._timestamps.labels;
+ break;
+ case 'auto':
+ default:
+ timestamps = generate(me, min, max, me.getLabelCapacity(min), options);
+ }
+
+ if (options.bounds === 'ticks' && timestamps.length) {
+ min = timestamps[0];
+ max = timestamps[timestamps.length - 1];
+ }
+
+ // Enforce limits with user min/max options
+ min = parse(me, timeOpts.min) || min;
+ max = parse(me, timeOpts.max) || max;
+
+ // Remove ticks outside the min/max range
+ for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
+ timestamp = timestamps[i];
+ if (timestamp >= min && timestamp <= max) {
+ ticks.push(timestamp);
+ }
+ }
+
+ me.min = min;
+ me.max = max;
+
+ // PRIVATE
+ me._unit = timeOpts.unit || determineUnitForFormatting(me, ticks, timeOpts.minUnit, me.min, me.max);
+ me._majorUnit = determineMajorUnit(me._unit);
+ me._table = buildLookupTable(me._timestamps.data, min, max, options.distribution);
+ me._offsets = computeOffsets(me._table, ticks, min, max, options);
+
+ if (options.ticks.reverse) {
+ ticks.reverse();
+ }
+
+ return ticksFromTimestamps(me, ticks, me._majorUnit);
+ },
+
+ getLabelForIndex: function(index, datasetIndex) {
+ var me = this;
+ var adapter = me._adapter;
+ var data = me.chart.data;
+ var timeOpts = me.options.time;
+ var label = data.labels && index < data.labels.length ? data.labels[index] : '';
+ var value = data.datasets[datasetIndex].data[index];
+
+ if (helpers$1.isObject(value)) {
+ label = me.getRightValue(value);
+ }
+ if (timeOpts.tooltipFormat) {
+ return adapter.format(toTimestamp(me, label), timeOpts.tooltipFormat);
+ }
+ if (typeof label === 'string') {
+ return label;
+ }
+ return adapter.format(toTimestamp(me, label), timeOpts.displayFormats.datetime);
+ },
+
+ /**
+ * Function to format an individual tick mark
+ * @private
+ */
+ tickFormatFunction: function(time, index, ticks, format) {
+ var me = this;
+ var adapter = me._adapter;
+ var options = me.options;
+ var formats = options.time.displayFormats;
+ var minorFormat = formats[me._unit];
+ var majorUnit = me._majorUnit;
+ var majorFormat = formats[majorUnit];
+ var majorTime = +adapter.startOf(time, majorUnit);
+ var majorTickOpts = options.ticks.major;
+ var major = majorTickOpts.enabled && majorUnit && majorFormat && time === majorTime;
+ var label = adapter.format(time, format ? format : major ? majorFormat : minorFormat);
+ var tickOpts = major ? majorTickOpts : options.ticks.minor;
+ var formatter = valueOrDefault$c(tickOpts.callback, tickOpts.userCallback);
+
+ return formatter ? formatter(label, index, ticks) : label;
+ },
+
+ convertTicksToLabels: function(ticks) {
+ var labels = [];
+ var i, ilen;
+
+ for (i = 0, ilen = ticks.length; i < ilen; ++i) {
+ labels.push(this.tickFormatFunction(ticks[i].value, i, ticks));
+ }
+
+ return labels;
+ },
+
+ /**
+ * @private
+ */
+ getPixelForOffset: function(time) {
+ var me = this;
+ var isReverse = me.options.ticks.reverse;
+ var size = me._horizontal ? me.width : me.height;
+ var start = me._horizontal ? isReverse ? me.right : me.left : isReverse ? me.bottom : me.top;
+ var pos = interpolate$1(me._table, 'time', time, 'pos');
+ var offset = size * (me._offsets.start + pos) / (me._offsets.start + 1 + me._offsets.end);
+
+ return isReverse ? start - offset : start + offset;
+ },
+
+ getPixelForValue: function(value, index, datasetIndex) {
+ var me = this;
+ var time = null;
+
+ if (index !== undefined && datasetIndex !== undefined) {
+ time = me._timestamps.datasets[datasetIndex][index];
+ }
+
+ if (time === null) {
+ time = parse(me, value);
+ }
+
+ if (time !== null) {
+ return me.getPixelForOffset(time);
+ }
+ },
+
+ getPixelForTick: function(index) {
+ var ticks = this.getTicks();
+ return index >= 0 && index < ticks.length ?
+ this.getPixelForOffset(ticks[index].value) :
+ null;
+ },
+
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var size = me._horizontal ? me.width : me.height;
+ var start = me._horizontal ? me.left : me.top;
+ var pos = (size ? (pixel - start) / size : 0) * (me._offsets.start + 1 + me._offsets.start) - me._offsets.end;
+ var time = interpolate$1(me._table, 'pos', pos, 'time');
+
+ // DEPRECATION, we should return time directly
+ return me._adapter._create(time);
+ },
+
+ /**
+ * Crude approximation of what the label width might be
+ * @private
+ */
+ getLabelWidth: function(label) {
+ var me = this;
+ var ticksOpts = me.options.ticks;
+ var tickLabelWidth = me.ctx.measureText(label).width;
+ var angle = helpers$1.toRadians(ticksOpts.maxRotation);
+ var cosRotation = Math.cos(angle);
+ var sinRotation = Math.sin(angle);
+ var tickFontSize = valueOrDefault$c(ticksOpts.fontSize, core_defaults.global.defaultFontSize);
+
+ return (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation);
+ },
+
+ /**
+ * @private
+ */
+ getLabelCapacity: function(exampleTime) {
+ var me = this;
+
+ // pick the longest format (milliseconds) for guestimation
+ var format = me.options.time.displayFormats.millisecond;
+ var exampleLabel = me.tickFormatFunction(exampleTime, 0, [], format);
+ var tickLabelWidth = me.getLabelWidth(exampleLabel);
+ var innerWidth = me.isHorizontal() ? me.width : me.height;
+ var capacity = Math.floor(innerWidth / tickLabelWidth);
+
+ return capacity > 0 ? capacity : 1;
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults$4 = defaultConfig$4;
+scale_time._defaults = _defaults$4;
+
+var scales = {
+ category: scale_category,
+ linear: scale_linear,
+ logarithmic: scale_logarithmic,
+ radialLinear: scale_radialLinear,
+ time: scale_time
+};
+
+var FORMATS = {
+ datetime: 'MMM D, YYYY, h:mm:ss a',
+ millisecond: 'h:mm:ss.SSS a',
+ second: 'h:mm:ss a',
+ minute: 'h:mm a',
+ hour: 'hA',
+ day: 'MMM D',
+ week: 'll',
+ month: 'MMM YYYY',
+ quarter: '[Q]Q - YYYY',
+ year: 'YYYY'
+};
+
+core_adapters._date.override(typeof moment === 'function' ? {
+ _id: 'moment', // DEBUG ONLY
+
+ formats: function() {
+ return FORMATS;
+ },
+
+ parse: function(value, format) {
+ if (typeof value === 'string' && typeof format === 'string') {
+ value = moment(value, format);
+ } else if (!(value instanceof moment)) {
+ value = moment(value);
+ }
+ return value.isValid() ? value.valueOf() : null;
+ },
+
+ format: function(time, format) {
+ return moment(time).format(format);
+ },
+
+ add: function(time, amount, unit) {
+ return moment(time).add(amount, unit).valueOf();
+ },
+
+ diff: function(max, min, unit) {
+ return moment.duration(moment(max).diff(moment(min))).as(unit);
+ },
+
+ startOf: function(time, unit, weekday) {
+ time = moment(time);
+ if (unit === 'isoWeek') {
+ return time.isoWeekday(weekday).valueOf();
+ }
+ return time.startOf(unit).valueOf();
+ },
+
+ endOf: function(time, unit) {
+ return moment(time).endOf(unit).valueOf();
+ },
+
+ // DEPRECATIONS
+
+ /**
+ * Provided for backward compatibility with scale.getValueForPixel().
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+ _create: function(time) {
+ return moment(time);
+ },
+} : {});
+
+core_defaults._set('global', {
+ plugins: {
+ filler: {
+ propagate: true
+ }
+ }
+});
+
+var mappers = {
+ dataset: function(source) {
+ var index = source.fill;
+ var chart = source.chart;
+ var meta = chart.getDatasetMeta(index);
+ var visible = meta && chart.isDatasetVisible(index);
+ var points = (visible && meta.dataset._children) || [];
+ var length = points.length || 0;
+
+ return !length ? null : function(point, i) {
+ return (i < length && points[i]._view) || null;
+ };
+ },
+
+ boundary: function(source) {
+ var boundary = source.boundary;
+ var x = boundary ? boundary.x : null;
+ var y = boundary ? boundary.y : null;
+
+ return function(point) {
+ return {
+ x: x === null ? point.x : x,
+ y: y === null ? point.y : y,
+ };
+ };
+ }
+};
+
+// @todo if (fill[0] === '#')
+function decodeFill(el, index, count) {
+ var model = el._model || {};
+ var fill = model.fill;
+ var target;
+
+ if (fill === undefined) {
+ fill = !!model.backgroundColor;
+ }
+
+ if (fill === false || fill === null) {
+ return false;
+ }
+
+ if (fill === true) {
+ return 'origin';
+ }
+
+ target = parseFloat(fill, 10);
+ if (isFinite(target) && Math.floor(target) === target) {
+ if (fill[0] === '-' || fill[0] === '+') {
+ target = index + target;
+ }
+
+ if (target === index || target < 0 || target >= count) {
+ return false;
+ }
+
+ return target;
+ }
+
+ switch (fill) {
+ // compatibility
+ case 'bottom':
+ return 'start';
+ case 'top':
+ return 'end';
+ case 'zero':
+ return 'origin';
+ // supported boundaries
+ case 'origin':
+ case 'start':
+ case 'end':
+ return fill;
+ // invalid fill values
+ default:
+ return false;
+ }
+}
+
+function computeBoundary(source) {
+ var model = source.el._model || {};
+ var scale = source.el._scale || {};
+ var fill = source.fill;
+ var target = null;
+ var horizontal;
+
+ if (isFinite(fill)) {
+ return null;
+ }
+
+ // Backward compatibility: until v3, we still need to support boundary values set on
+ // the model (scaleTop, scaleBottom and scaleZero) because some external plugins and
+ // controllers might still use it (e.g. the Smith chart).
+
+ if (fill === 'start') {
+ target = model.scaleBottom === undefined ? scale.bottom : model.scaleBottom;
+ } else if (fill === 'end') {
+ target = model.scaleTop === undefined ? scale.top : model.scaleTop;
+ } else if (model.scaleZero !== undefined) {
+ target = model.scaleZero;
+ } else if (scale.getBasePosition) {
+ target = scale.getBasePosition();
+ } else if (scale.getBasePixel) {
+ target = scale.getBasePixel();
+ }
+
+ if (target !== undefined && target !== null) {
+ if (target.x !== undefined && target.y !== undefined) {
+ return target;
+ }
+
+ if (helpers$1.isFinite(target)) {
+ horizontal = scale.isHorizontal();
+ return {
+ x: horizontal ? target : null,
+ y: horizontal ? null : target
+ };
+ }
+ }
+
+ return null;
+}
+
+function resolveTarget(sources, index, propagate) {
+ var source = sources[index];
+ var fill = source.fill;
+ var visited = [index];
+ var target;
+
+ if (!propagate) {
+ return fill;
+ }
+
+ while (fill !== false && visited.indexOf(fill) === -1) {
+ if (!isFinite(fill)) {
+ return fill;
+ }
+
+ target = sources[fill];
+ if (!target) {
+ return false;
+ }
+
+ if (target.visible) {
+ return fill;
+ }
+
+ visited.push(fill);
+ fill = target.fill;
+ }
+
+ return false;
+}
+
+function createMapper(source) {
+ var fill = source.fill;
+ var type = 'dataset';
+
+ if (fill === false) {
+ return null;
+ }
+
+ if (!isFinite(fill)) {
+ type = 'boundary';
+ }
+
+ return mappers[type](source);
+}
+
+function isDrawable(point) {
+ return point && !point.skip;
+}
+
+function drawArea(ctx, curve0, curve1, len0, len1) {
+ var i;
+
+ if (!len0 || !len1) {
+ return;
+ }
+
+ // building first area curve (normal)
+ ctx.moveTo(curve0[0].x, curve0[0].y);
+ for (i = 1; i < len0; ++i) {
+ helpers$1.canvas.lineTo(ctx, curve0[i - 1], curve0[i]);
+ }
+
+ // joining the two area curves
+ ctx.lineTo(curve1[len1 - 1].x, curve1[len1 - 1].y);
+
+ // building opposite area curve (reverse)
+ for (i = len1 - 1; i > 0; --i) {
+ helpers$1.canvas.lineTo(ctx, curve1[i], curve1[i - 1], true);
+ }
+}
+
+function doFill(ctx, points, mapper, view, color, loop) {
+ var count = points.length;
+ var span = view.spanGaps;
+ var curve0 = [];
+ var curve1 = [];
+ var len0 = 0;
+ var len1 = 0;
+ var i, ilen, index, p0, p1, d0, d1;
+
+ ctx.beginPath();
+
+ for (i = 0, ilen = (count + !!loop); i < ilen; ++i) {
+ index = i % count;
+ p0 = points[index]._view;
+ p1 = mapper(p0, index, view);
+ d0 = isDrawable(p0);
+ d1 = isDrawable(p1);
+
+ if (d0 && d1) {
+ len0 = curve0.push(p0);
+ len1 = curve1.push(p1);
+ } else if (len0 && len1) {
+ if (!span) {
+ drawArea(ctx, curve0, curve1, len0, len1);
+ len0 = len1 = 0;
+ curve0 = [];
+ curve1 = [];
+ } else {
+ if (d0) {
+ curve0.push(p0);
+ }
+ if (d1) {
+ curve1.push(p1);
+ }
+ }
+ }
+ }
+
+ drawArea(ctx, curve0, curve1, len0, len1);
+
+ ctx.closePath();
+ ctx.fillStyle = color;
+ ctx.fill();
+}
+
+var plugin_filler = {
+ id: 'filler',
+
+ afterDatasetsUpdate: function(chart, options) {
+ var count = (chart.data.datasets || []).length;
+ var propagate = options.propagate;
+ var sources = [];
+ var meta, i, el, source;
+
+ for (i = 0; i < count; ++i) {
+ meta = chart.getDatasetMeta(i);
+ el = meta.dataset;
+ source = null;
+
+ if (el && el._model && el instanceof elements.Line) {
+ source = {
+ visible: chart.isDatasetVisible(i),
+ fill: decodeFill(el, i, count),
+ chart: chart,
+ el: el
+ };
+ }
+
+ meta.$filler = source;
+ sources.push(source);
+ }
+
+ for (i = 0; i < count; ++i) {
+ source = sources[i];
+ if (!source) {
+ continue;
+ }
+
+ source.fill = resolveTarget(sources, i, propagate);
+ source.boundary = computeBoundary(source);
+ source.mapper = createMapper(source);
+ }
+ },
+
+ beforeDatasetDraw: function(chart, args) {
+ var meta = args.meta.$filler;
+ if (!meta) {
+ return;
+ }
+
+ var ctx = chart.ctx;
+ var el = meta.el;
+ var view = el._view;
+ var points = el._children || [];
+ var mapper = meta.mapper;
+ var color = view.backgroundColor || core_defaults.global.defaultColor;
+
+ if (mapper && color && points.length) {
+ helpers$1.canvas.clipArea(ctx, chart.chartArea);
+ doFill(ctx, points, mapper, view, color, el._loop);
+ helpers$1.canvas.unclipArea(ctx);
+ }
+ }
+};
+
+var noop$1 = helpers$1.noop;
+var valueOrDefault$d = helpers$1.valueOrDefault;
+
+core_defaults._set('global', {
+ legend: {
+ display: true,
+ position: 'top',
+ fullWidth: true,
+ reverse: false,
+ weight: 1000,
+
+ // a callback that will handle
+ onClick: function(e, legendItem) {
+ var index = legendItem.datasetIndex;
+ var ci = this.chart;
+ var meta = ci.getDatasetMeta(index);
+
+ // See controller.isDatasetVisible comment
+ meta.hidden = meta.hidden === null ? !ci.data.datasets[index].hidden : null;
+
+ // We hid a dataset ... rerender the chart
+ ci.update();
+ },
+
+ onHover: null,
+ onLeave: null,
+
+ labels: {
+ boxWidth: 40,
+ padding: 10,
+ // Generates labels shown in the legend
+ // Valid properties to return:
+ // text : text to display
+ // fillStyle : fill of coloured box
+ // strokeStyle: stroke of coloured box
+ // hidden : if this legend item refers to a hidden item
+ // lineCap : cap style for line
+ // lineDash
+ // lineDashOffset :
+ // lineJoin :
+ // lineWidth :
+ generateLabels: function(chart) {
+ var data = chart.data;
+ return helpers$1.isArray(data.datasets) ? data.datasets.map(function(dataset, i) {
+ return {
+ text: dataset.label,
+ fillStyle: (!helpers$1.isArray(dataset.backgroundColor) ? dataset.backgroundColor : dataset.backgroundColor[0]),
+ hidden: !chart.isDatasetVisible(i),
+ lineCap: dataset.borderCapStyle,
+ lineDash: dataset.borderDash,
+ lineDashOffset: dataset.borderDashOffset,
+ lineJoin: dataset.borderJoinStyle,
+ lineWidth: dataset.borderWidth,
+ strokeStyle: dataset.borderColor,
+ pointStyle: dataset.pointStyle,
+
+ // Below is extra data used for toggling the datasets
+ datasetIndex: i
+ };
+ }, this) : [];
+ }
+ }
+ },
+
+ legendCallback: function(chart) {
+ var text = [];
+ text.push('<ul class="' + chart.id + '-legend">');
+ for (var i = 0; i < chart.data.datasets.length; i++) {
+ text.push('<li><span style="background-color:' + chart.data.datasets[i].backgroundColor + '"></span>');
+ if (chart.data.datasets[i].label) {
+ text.push(chart.data.datasets[i].label);
+ }
+ text.push('</li>');
+ }
+ text.push('</ul>');
+ return text.join('');
+ }
+});
+
+/**
+ * Helper function to get the box width based on the usePointStyle option
+ * @param {object} labelopts - the label options on the legend
+ * @param {number} fontSize - the label font size
+ * @return {number} width of the color box area
+ */
+function getBoxWidth(labelOpts, fontSize) {
+ return labelOpts.usePointStyle && labelOpts.boxWidth > fontSize ?
+ fontSize :
+ labelOpts.boxWidth;
+}
+
+/**
+ * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
+ */
+var Legend = core_element.extend({
+
+ initialize: function(config) {
+ helpers$1.extend(this, config);
+
+ // Contains hit boxes for each dataset (in dataset order)
+ this.legendHitBoxes = [];
+
+ /**
+ * @private
+ */
+ this._hoveredItem = null;
+
+ // Are we in doughnut mode which has a different data type
+ this.doughnutMode = false;
+ },
+
+ // These methods are ordered by lifecycle. Utilities then follow.
+ // Any function defined here is inherited by all legend types.
+ // Any function can be extended by the legend type
+
+ beforeUpdate: noop$1,
+ update: function(maxWidth, maxHeight, margins) {
+ var me = this;
+
+ // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
+ me.beforeUpdate();
+
+ // Absorb the master measurements
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = margins;
+
+ // Dimensions
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
+ // Labels
+ me.beforeBuildLabels();
+ me.buildLabels();
+ me.afterBuildLabels();
+
+ // Fit
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
+ //
+ me.afterUpdate();
+
+ return me.minSize;
+ },
+ afterUpdate: noop$1,
+
+ //
+
+ beforeSetDimensions: noop$1,
+ setDimensions: function() {
+ var me = this;
+ // Set the unconstrained dimension before label rotation
+ if (me.isHorizontal()) {
+ // Reset position before calculating rotation
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
+ } else {
+ me.height = me.maxHeight;
+
+ // Reset position before calculating rotation
+ me.top = 0;
+ me.bottom = me.height;
+ }
+
+ // Reset padding
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
+
+ // Reset minSize
+ me.minSize = {
+ width: 0,
+ height: 0
+ };
+ },
+ afterSetDimensions: noop$1,
+
+ //
+
+ beforeBuildLabels: noop$1,
+ buildLabels: function() {
+ var me = this;
+ var labelOpts = me.options.labels || {};
+ var legendItems = helpers$1.callback(labelOpts.generateLabels, [me.chart], me) || [];
+
+ if (labelOpts.filter) {
+ legendItems = legendItems.filter(function(item) {
+ return labelOpts.filter(item, me.chart.data);
+ });
+ }
+
+ if (me.options.reverse) {
+ legendItems.reverse();
+ }
+
+ me.legendItems = legendItems;
+ },
+ afterBuildLabels: noop$1,
+
+ //
+
+ beforeFit: noop$1,
+ fit: function() {
+ var me = this;
+ var opts = me.options;
+ var labelOpts = opts.labels;
+ var display = opts.display;
+
+ var ctx = me.ctx;
+
+ var labelFont = helpers$1.options._parseFont(labelOpts);
+ var fontSize = labelFont.size;
+
+ // Reset hit boxes
+ var hitboxes = me.legendHitBoxes = [];
+
+ var minSize = me.minSize;
+ var isHorizontal = me.isHorizontal();
+
+ if (isHorizontal) {
+ minSize.width = me.maxWidth; // fill all the width
+ minSize.height = display ? 10 : 0;
+ } else {
+ minSize.width = display ? 10 : 0;
+ minSize.height = me.maxHeight; // fill all the height
+ }
+
+ // Increase sizes here
+ if (display) {
+ ctx.font = labelFont.string;
+
+ if (isHorizontal) {
+ // Labels
+
+ // Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one
+ var lineWidths = me.lineWidths = [0];
+ var totalHeight = 0;
+
+ ctx.textAlign = 'left';
+ ctx.textBaseline = 'top';
+
+ helpers$1.each(me.legendItems, function(legendItem, i) {
+ var boxWidth = getBoxWidth(labelOpts, fontSize);
+ var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
+
+ if (i === 0 || lineWidths[lineWidths.length - 1] + width + labelOpts.padding > minSize.width) {
+ totalHeight += fontSize + labelOpts.padding;
+ lineWidths[lineWidths.length - (i > 0 ? 0 : 1)] = labelOpts.padding;
+ }
+
+ // Store the hitbox width and height here. Final position will be updated in `draw`
+ hitboxes[i] = {
+ left: 0,
+ top: 0,
+ width: width,
+ height: fontSize
+ };
+
+ lineWidths[lineWidths.length - 1] += width + labelOpts.padding;
+ });
+
+ minSize.height += totalHeight;
+
+ } else {
+ var vPadding = labelOpts.padding;
+ var columnWidths = me.columnWidths = [];
+ var totalWidth = labelOpts.padding;
+ var currentColWidth = 0;
+ var currentColHeight = 0;
+ var itemHeight = fontSize + vPadding;
+
+ helpers$1.each(me.legendItems, function(legendItem, i) {
+ var boxWidth = getBoxWidth(labelOpts, fontSize);
+ var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
+
+ // If too tall, go to new column
+ if (i > 0 && currentColHeight + itemHeight > minSize.height - vPadding) {
+ totalWidth += currentColWidth + labelOpts.padding;
+ columnWidths.push(currentColWidth); // previous column width
+
+ currentColWidth = 0;
+ currentColHeight = 0;
+ }
+
+ // Get max width
+ currentColWidth = Math.max(currentColWidth, itemWidth);
+ currentColHeight += itemHeight;
+
+ // Store the hitbox width and height here. Final position will be updated in `draw`
+ hitboxes[i] = {
+ left: 0,
+ top: 0,
+ width: itemWidth,
+ height: fontSize
+ };
+ });
+
+ totalWidth += currentColWidth;
+ columnWidths.push(currentColWidth);
+ minSize.width += totalWidth;
+ }
+ }
+
+ me.width = minSize.width;
+ me.height = minSize.height;
+ },
+ afterFit: noop$1,
+
+ // Shared Methods
+ isHorizontal: function() {
+ return this.options.position === 'top' || this.options.position === 'bottom';
+ },
+
+ // Actually draw the legend on the canvas
+ draw: function() {
+ var me = this;
+ var opts = me.options;
+ var labelOpts = opts.labels;
+ var globalDefaults = core_defaults.global;
+ var defaultColor = globalDefaults.defaultColor;
+ var lineDefault = globalDefaults.elements.line;
+ var legendWidth = me.width;
+ var lineWidths = me.lineWidths;
+
+ if (opts.display) {
+ var ctx = me.ctx;
+ var fontColor = valueOrDefault$d(labelOpts.fontColor, globalDefaults.defaultFontColor);
+ var labelFont = helpers$1.options._parseFont(labelOpts);
+ var fontSize = labelFont.size;
+ var cursor;
+
+ // Canvas setup
+ ctx.textAlign = 'left';
+ ctx.textBaseline = 'middle';
+ ctx.lineWidth = 0.5;
+ ctx.strokeStyle = fontColor; // for strikethrough effect
+ ctx.fillStyle = fontColor; // render in correct colour
+ ctx.font = labelFont.string;
+
+ var boxWidth = getBoxWidth(labelOpts, fontSize);
+ var hitboxes = me.legendHitBoxes;
+
+ // current position
+ var drawLegendBox = function(x, y, legendItem) {
+ if (isNaN(boxWidth) || boxWidth <= 0) {
+ return;
+ }
+
+ // Set the ctx for the box
+ ctx.save();
+
+ var lineWidth = valueOrDefault$d(legendItem.lineWidth, lineDefault.borderWidth);
+ ctx.fillStyle = valueOrDefault$d(legendItem.fillStyle, defaultColor);
+ ctx.lineCap = valueOrDefault$d(legendItem.lineCap, lineDefault.borderCapStyle);
+ ctx.lineDashOffset = valueOrDefault$d(legendItem.lineDashOffset, lineDefault.borderDashOffset);
+ ctx.lineJoin = valueOrDefault$d(legendItem.lineJoin, lineDefault.borderJoinStyle);
+ ctx.lineWidth = lineWidth;
+ ctx.strokeStyle = valueOrDefault$d(legendItem.strokeStyle, defaultColor);
+
+ if (ctx.setLineDash) {
+ // IE 9 and 10 do not support line dash
+ ctx.setLineDash(valueOrDefault$d(legendItem.lineDash, lineDefault.borderDash));
+ }
+
+ if (opts.labels && opts.labels.usePointStyle) {
+ // Recalculate x and y for drawPoint() because its expecting
+ // x and y to be center of figure (instead of top left)
+ var radius = boxWidth * Math.SQRT2 / 2;
+ var centerX = x + boxWidth / 2;
+ var centerY = y + fontSize / 2;
+
+ // Draw pointStyle as legend symbol
+ helpers$1.canvas.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY);
+ } else {
+ // Draw box as legend symbol
+ if (lineWidth !== 0) {
+ ctx.strokeRect(x, y, boxWidth, fontSize);
+ }
+ ctx.fillRect(x, y, boxWidth, fontSize);
+ }
+
+ ctx.restore();
+ };
+ var fillText = function(x, y, legendItem, textWidth) {
+ var halfFontSize = fontSize / 2;
+ var xLeft = boxWidth + halfFontSize + x;
+ var yMiddle = y + halfFontSize;
+
+ ctx.fillText(legendItem.text, xLeft, yMiddle);
+
+ if (legendItem.hidden) {
+ // Strikethrough the text if hidden
+ ctx.beginPath();
+ ctx.lineWidth = 2;
+ ctx.moveTo(xLeft, yMiddle);
+ ctx.lineTo(xLeft + textWidth, yMiddle);
+ ctx.stroke();
+ }
+ };
+
+ // Horizontal
+ var isHorizontal = me.isHorizontal();
+ if (isHorizontal) {
+ cursor = {
+ x: me.left + ((legendWidth - lineWidths[0]) / 2) + labelOpts.padding,
+ y: me.top + labelOpts.padding,
+ line: 0
+ };
+ } else {
+ cursor = {
+ x: me.left + labelOpts.padding,
+ y: me.top + labelOpts.padding,
+ line: 0
+ };
+ }
+
+ var itemHeight = fontSize + labelOpts.padding;
+ helpers$1.each(me.legendItems, function(legendItem, i) {
+ var textWidth = ctx.measureText(legendItem.text).width;
+ var width = boxWidth + (fontSize / 2) + textWidth;
+ var x = cursor.x;
+ var y = cursor.y;
+
+ // Use (me.left + me.minSize.width) and (me.top + me.minSize.height)
+ // instead of me.right and me.bottom because me.width and me.height
+ // may have been changed since me.minSize was calculated
+ if (isHorizontal) {
+ if (i > 0 && x + width + labelOpts.padding > me.left + me.minSize.width) {
+ y = cursor.y += itemHeight;
+ cursor.line++;
+ x = cursor.x = me.left + ((legendWidth - lineWidths[cursor.line]) / 2) + labelOpts.padding;
+ }
+ } else if (i > 0 && y + itemHeight > me.top + me.minSize.height) {
+ x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding;
+ y = cursor.y = me.top + labelOpts.padding;
+ cursor.line++;
+ }
+
+ drawLegendBox(x, y, legendItem);
+
+ hitboxes[i].left = x;
+ hitboxes[i].top = y;
+
+ // Fill the actual label
+ fillText(x, y, legendItem, textWidth);
+
+ if (isHorizontal) {
+ cursor.x += width + labelOpts.padding;
+ } else {
+ cursor.y += itemHeight;
+ }
+
+ });
+ }
+ },
+
+ /**
+ * @private
+ */
+ _getLegendItemAt: function(x, y) {
+ var me = this;
+ var i, hitBox, lh;
+
+ if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) {
+ // See if we are touching one of the dataset boxes
+ lh = me.legendHitBoxes;
+ for (i = 0; i < lh.length; ++i) {
+ hitBox = lh[i];
+
+ if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) {
+ // Touching an element
+ return me.legendItems[i];
+ }
+ }
+ }
+
+ return null;
+ },
+
+ /**
+ * Handle an event
+ * @private
+ * @param {IEvent} event - The event to handle
+ */
+ handleEvent: function(e) {
+ var me = this;
+ var opts = me.options;
+ var type = e.type === 'mouseup' ? 'click' : e.type;
+ var hoveredItem;
+
+ if (type === 'mousemove') {
+ if (!opts.onHover && !opts.onLeave) {
+ return;
+ }
+ } else if (type === 'click') {
+ if (!opts.onClick) {
+ return;
+ }
+ } else {
+ return;
+ }
+
+ // Chart event already has relative position in it
+ hoveredItem = me._getLegendItemAt(e.x, e.y);
+
+ if (type === 'click') {
+ if (hoveredItem && opts.onClick) {
+ // use e.native for backwards compatibility
+ opts.onClick.call(me, e.native, hoveredItem);
+ }
+ } else {
+ if (opts.onLeave && hoveredItem !== me._hoveredItem) {
+ if (me._hoveredItem) {
+ opts.onLeave.call(me, e.native, me._hoveredItem);
+ }
+ me._hoveredItem = hoveredItem;
+ }
+
+ if (opts.onHover && hoveredItem) {
+ // use e.native for backwards compatibility
+ opts.onHover.call(me, e.native, hoveredItem);
+ }
+ }
+ }
+});
+
+function createNewLegendAndAttach(chart, legendOpts) {
+ var legend = new Legend({
+ ctx: chart.ctx,
+ options: legendOpts,
+ chart: chart
+ });
+
+ core_layouts.configure(chart, legend, legendOpts);
+ core_layouts.addBox(chart, legend);
+ chart.legend = legend;
+}
+
+var plugin_legend = {
+ id: 'legend',
+
+ /**
+ * Backward compatibility: since 2.1.5, the legend is registered as a plugin, making
+ * Chart.Legend obsolete. To avoid a breaking change, we export the Legend as part of
+ * the plugin, which one will be re-exposed in the chart.js file.
+ * https://github.com/chartjs/Chart.js/pull/2640
+ * @private
+ */
+ _element: Legend,
+
+ beforeInit: function(chart) {
+ var legendOpts = chart.options.legend;
+
+ if (legendOpts) {
+ createNewLegendAndAttach(chart, legendOpts);
+ }
+ },
+
+ beforeUpdate: function(chart) {
+ var legendOpts = chart.options.legend;
+ var legend = chart.legend;
+
+ if (legendOpts) {
+ helpers$1.mergeIf(legendOpts, core_defaults.global.legend);
+
+ if (legend) {
+ core_layouts.configure(chart, legend, legendOpts);
+ legend.options = legendOpts;
+ } else {
+ createNewLegendAndAttach(chart, legendOpts);
+ }
+ } else if (legend) {
+ core_layouts.removeBox(chart, legend);
+ delete chart.legend;
+ }
+ },
+
+ afterEvent: function(chart, e) {
+ var legend = chart.legend;
+ if (legend) {
+ legend.handleEvent(e);
+ }
+ }
+};
+
+var noop$2 = helpers$1.noop;
+
+core_defaults._set('global', {
+ title: {
+ display: false,
+ fontStyle: 'bold',
+ fullWidth: true,
+ padding: 10,
+ position: 'top',
+ text: '',
+ weight: 2000 // by default greater than legend (1000) to be above
+ }
+});
+
+/**
+ * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
+ */
+var Title = core_element.extend({
+ initialize: function(config) {
+ var me = this;
+ helpers$1.extend(me, config);
+
+ // Contains hit boxes for each dataset (in dataset order)
+ me.legendHitBoxes = [];
+ },
+
+ // These methods are ordered by lifecycle. Utilities then follow.
+
+ beforeUpdate: noop$2,
+ update: function(maxWidth, maxHeight, margins) {
+ var me = this;
+
+ // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
+ me.beforeUpdate();
+
+ // Absorb the master measurements
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = margins;
+
+ // Dimensions
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
+ // Labels
+ me.beforeBuildLabels();
+ me.buildLabels();
+ me.afterBuildLabels();
+
+ // Fit
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
+ //
+ me.afterUpdate();
+
+ return me.minSize;
+
+ },
+ afterUpdate: noop$2,
+
+ //
+
+ beforeSetDimensions: noop$2,
+ setDimensions: function() {
+ var me = this;
+ // Set the unconstrained dimension before label rotation
+ if (me.isHorizontal()) {
+ // Reset position before calculating rotation
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
+ } else {
+ me.height = me.maxHeight;
+
+ // Reset position before calculating rotation
+ me.top = 0;
+ me.bottom = me.height;
+ }
+
+ // Reset padding
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
+
+ // Reset minSize
+ me.minSize = {
+ width: 0,
+ height: 0
+ };
+ },
+ afterSetDimensions: noop$2,
+
+ //
+
+ beforeBuildLabels: noop$2,
+ buildLabels: noop$2,
+ afterBuildLabels: noop$2,
+
+ //
+
+ beforeFit: noop$2,
+ fit: function() {
+ var me = this;
+ var opts = me.options;
+ var display = opts.display;
+ var minSize = me.minSize;
+ var lineCount = helpers$1.isArray(opts.text) ? opts.text.length : 1;
+ var fontOpts = helpers$1.options._parseFont(opts);
+ var textSize = display ? (lineCount * fontOpts.lineHeight) + (opts.padding * 2) : 0;
+
+ if (me.isHorizontal()) {
+ minSize.width = me.maxWidth; // fill all the width
+ minSize.height = textSize;
+ } else {
+ minSize.width = textSize;
+ minSize.height = me.maxHeight; // fill all the height
+ }
+
+ me.width = minSize.width;
+ me.height = minSize.height;
+
+ },
+ afterFit: noop$2,
+
+ // Shared Methods
+ isHorizontal: function() {
+ var pos = this.options.position;
+ return pos === 'top' || pos === 'bottom';
+ },
+
+ // Actually draw the title block on the canvas
+ draw: function() {
+ var me = this;
+ var ctx = me.ctx;
+ var opts = me.options;
+
+ if (opts.display) {
+ var fontOpts = helpers$1.options._parseFont(opts);
+ var lineHeight = fontOpts.lineHeight;
+ var offset = lineHeight / 2 + opts.padding;
+ var rotation = 0;
+ var top = me.top;
+ var left = me.left;
+ var bottom = me.bottom;
+ var right = me.right;
+ var maxWidth, titleX, titleY;
+
+ ctx.fillStyle = helpers$1.valueOrDefault(opts.fontColor, core_defaults.global.defaultFontColor); // render in correct colour
+ ctx.font = fontOpts.string;
+
+ // Horizontal
+ if (me.isHorizontal()) {
+ titleX = left + ((right - left) / 2); // midpoint of the width
+ titleY = top + offset;
+ maxWidth = right - left;
+ } else {
+ titleX = opts.position === 'left' ? left + offset : right - offset;
+ titleY = top + ((bottom - top) / 2);
+ maxWidth = bottom - top;
+ rotation = Math.PI * (opts.position === 'left' ? -0.5 : 0.5);
+ }
+
+ ctx.save();
+ ctx.translate(titleX, titleY);
+ ctx.rotate(rotation);
+ ctx.textAlign = 'center';
+ ctx.textBaseline = 'middle';
+
+ var text = opts.text;
+ if (helpers$1.isArray(text)) {
+ var y = 0;
+ for (var i = 0; i < text.length; ++i) {
+ ctx.fillText(text[i], 0, y, maxWidth);
+ y += lineHeight;
+ }
+ } else {
+ ctx.fillText(text, 0, 0, maxWidth);
+ }
+
+ ctx.restore();
+ }
+ }
+});
+
+function createNewTitleBlockAndAttach(chart, titleOpts) {
+ var title = new Title({
+ ctx: chart.ctx,
+ options: titleOpts,
+ chart: chart
+ });
+
+ core_layouts.configure(chart, title, titleOpts);
+ core_layouts.addBox(chart, title);
+ chart.titleBlock = title;
+}
+
+var plugin_title = {
+ id: 'title',
+
+ /**
+ * Backward compatibility: since 2.1.5, the title is registered as a plugin, making
+ * Chart.Title obsolete. To avoid a breaking change, we export the Title as part of
+ * the plugin, which one will be re-exposed in the chart.js file.
+ * https://github.com/chartjs/Chart.js/pull/2640
+ * @private
+ */
+ _element: Title,
+
+ beforeInit: function(chart) {
+ var titleOpts = chart.options.title;
+
+ if (titleOpts) {
+ createNewTitleBlockAndAttach(chart, titleOpts);
+ }
+ },
+
+ beforeUpdate: function(chart) {
+ var titleOpts = chart.options.title;
+ var titleBlock = chart.titleBlock;
+
+ if (titleOpts) {
+ helpers$1.mergeIf(titleOpts, core_defaults.global.title);
+
+ if (titleBlock) {
+ core_layouts.configure(chart, titleBlock, titleOpts);
+ titleBlock.options = titleOpts;
+ } else {
+ createNewTitleBlockAndAttach(chart, titleOpts);
+ }
+ } else if (titleBlock) {
+ core_layouts.removeBox(chart, titleBlock);
+ delete chart.titleBlock;
+ }
+ }
+};
+
+var plugins = {};
+var filler = plugin_filler;
+var legend = plugin_legend;
+var title = plugin_title;
+plugins.filler = filler;
+plugins.legend = legend;
+plugins.title = title;
+
+/**
+ * @namespace Chart
+ */
+
+
+core_controller.helpers = helpers$1;
+
+// @todo dispatch these helpers into appropriated helpers/helpers.* file and write unit tests!
+core_helpers(core_controller);
+
+core_controller._adapters = core_adapters;
+core_controller.Animation = core_animation;
+core_controller.animationService = core_animations;
+core_controller.controllers = controllers;
+core_controller.DatasetController = core_datasetController;
+core_controller.defaults = core_defaults;
+core_controller.Element = core_element;
+core_controller.elements = elements;
+core_controller.Interaction = core_interaction;
+core_controller.layouts = core_layouts;
+core_controller.platform = platform;
+core_controller.plugins = core_plugins;
+core_controller.Scale = core_scale;
+core_controller.scaleService = core_scaleService;
+core_controller.Ticks = core_ticks;
+core_controller.Tooltip = core_tooltip;
+
+// Register built-in scales
+
+core_controller.helpers.each(scales, function(scale, type) {
+ core_controller.scaleService.registerScaleType(type, scale, scale._defaults);
+});
+
+// Load to register built-in adapters (as side effects)
+
+
+// Loading built-in plugins
+
+for (var k in plugins) {
+ if (plugins.hasOwnProperty(k)) {
+ core_controller.plugins.register(plugins[k]);
+ }
+}
+
+core_controller.platform.initialize();
+
+var src = core_controller;
+if (typeof window !== 'undefined') {
+ window.Chart = core_controller;
+}
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, not available anymore
+ * @namespace Chart.Chart
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.Chart = core_controller;
+
+/**
+ * Provided for backward compatibility, not available anymore
+ * @namespace Chart.Legend
+ * @deprecated since version 2.1.5
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.Legend = plugins.legend._element;
+
+/**
+ * Provided for backward compatibility, not available anymore
+ * @namespace Chart.Title
+ * @deprecated since version 2.1.5
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.Title = plugins.title._element;
+
+/**
+ * Provided for backward compatibility, use Chart.plugins instead
+ * @namespace Chart.pluginService
+ * @deprecated since version 2.1.5
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.pluginService = core_controller.plugins;
+
+/**
+ * Provided for backward compatibility, inheriting from Chart.PlugingBase has no
+ * effect, instead simply create/register plugins via plain JavaScript objects.
+ * @interface Chart.PluginBase
+ * @deprecated since version 2.5.0
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.PluginBase = core_controller.Element.extend({});
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.canvas instead.
+ * @namespace Chart.canvasHelpers
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.canvasHelpers = core_controller.helpers.canvas;
+
+/**
+ * Provided for backward compatibility, use Chart.layouts instead.
+ * @namespace Chart.layoutService
+ * @deprecated since version 2.7.3
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.layoutService = core_controller.layouts;
+
+/**
+ * Provided for backward compatibility, not available anymore.
+ * @namespace Chart.LinearScaleBase
+ * @deprecated since version 2.8
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.LinearScaleBase = scale_linearbase;
+
+/**
+ * Provided for backward compatibility, instead we should create a new Chart
+ * by setting the type in the config (`new Chart(id, {type: '{chart-type}'}`).
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ */
+core_controller.helpers.each(
+ [
+ 'Bar',
+ 'Bubble',
+ 'Doughnut',
+ 'Line',
+ 'PolarArea',
+ 'Radar',
+ 'Scatter'
+ ],
+ function(klass) {
+ core_controller[klass] = function(ctx, cfg) {
+ return new core_controller(ctx, core_controller.helpers.merge(cfg || {}, {
+ type: klass.charAt(0).toLowerCase() + klass.slice(1)
+ }));
+ };
+ }
+);
+
+return src;
+
+})));
--- /dev/null
+@keyframes chartjs-render-animation{from{opacity:.99}to{opacity:1}}.chartjs-render-monitor{animation:chartjs-render-animation 1ms}.chartjs-size-monitor,.chartjs-size-monitor-expand,.chartjs-size-monitor-shrink{position:absolute;direction:ltr;left:0;top:0;right:0;bottom:0;overflow:hidden;pointer-events:none;visibility:hidden;z-index:-1}.chartjs-size-monitor-expand>div{position:absolute;width:1000000px;height:1000000px;left:0;top:0}.chartjs-size-monitor-shrink>div{position:absolute;width:200%;height:200%;left:0;top:0}
\ No newline at end of file
--- /dev/null
+/*!
+ * Chart.js v2.8.0
+ * https://www.chartjs.org
+ * (c) 2019 Chart.js Contributors
+ * Released under the MIT License
+ */
+!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e(function(){try{return require("moment")}catch(t){}}()):"function"==typeof define&&define.amd?define(["require"],function(t){return e(function(){try{return t("moment")}catch(t){}}())}):t.Chart=e(t.moment)}(this,function(t){"use strict";t=t&&t.hasOwnProperty("default")?t.default:t;var e={rgb2hsl:i,rgb2hsv:n,rgb2hwb:a,rgb2cmyk:o,rgb2keyword:s,rgb2xyz:l,rgb2lab:d,rgb2lch:function(t){return x(d(t))},hsl2rgb:u,hsl2hsv:function(t){var e=t[0],i=t[1]/100,n=t[2]/100;if(0===n)return[0,0,0];return[e,100*(2*(i*=(n*=2)<=1?n:2-n)/(n+i)),100*((n+i)/2)]},hsl2hwb:function(t){return a(u(t))},hsl2cmyk:function(t){return o(u(t))},hsl2keyword:function(t){return s(u(t))},hsv2rgb:h,hsv2hsl:function(t){var e,i,n=t[0],a=t[1]/100,o=t[2]/100;return e=a*o,[n,100*(e=(e/=(i=(2-a)*o)<=1?i:2-i)||0),100*(i/=2)]},hsv2hwb:function(t){return a(h(t))},hsv2cmyk:function(t){return o(h(t))},hsv2keyword:function(t){return 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t,e,i=this.getMeta(),n=this.getDataset().data||[],a=i.data;for(t=0,e=n.length;t<e;++t)a[t]=a[t]||this.createMetaData(t);i.dataset=i.dataset||this.createMetaDataset()},addElementAndReset:function(t){var e=this.createMetaData(t);this.getMeta().data.splice(t,0,e),this.updateElement(e,t,!0)},buildOrUpdateElements:function(){var t,e,i=this,n=i.getDataset(),a=n.data||(n.data=[]);i._data!==a&&(i._data&&kt(i._data,i),a&&Object.isExtensible(a)&&(e=i,(t=a)._chartjs?t._chartjs.listeners.push(e):(Object.defineProperty(t,"_chartjs",{configurable:!0,enumerable:!1,value:{listeners:[e]}}),yt.forEach(function(e){var i="onData"+e.charAt(0).toUpperCase()+e.slice(1),n=t[e];Object.defineProperty(t,e,{configurable:!0,enumerable:!1,value:function(){var e=Array.prototype.slice.call(arguments),a=n.apply(this,e);return ut.each(t._chartjs.listeners,function(t){"function"==typeof t[i]&&t[i].apply(t,e)}),a}})}))),i._data=a),i.resyncElements()},update:ut.noop,transition:function(t){for(var e=this.getMeta(),i=e.data||[],n=i.length,a=0;a<n;++a)i[a].transition(t);e.dataset&&e.dataset.transition(t)},draw:function(){var t=this.getMeta(),e=t.data||[],i=e.length,n=0;for(t.dataset&&t.dataset.draw();n<i;++n)e[n].draw()},removeHoverStyle:function(t){ut.merge(t._model,t.$previousStyle||{}),delete t.$previousStyle},setHoverStyle:function(t){var e=this.chart.data.datasets[t._datasetIndex],i=t._index,n=t.custom||{},a=t._model,o=ut.getHoverColor;t.$previousStyle={backgroundColor:a.backgroundColor,borderColor:a.borderColor,borderWidth:a.borderWidth},a.backgroundColor=xt([n.hoverBackgroundColor,e.hoverBackgroundColor,o(a.backgroundColor)],void 0,i),a.borderColor=xt([n.hoverBorderColor,e.hoverBorderColor,o(a.borderColor)],void 0,i),a.borderWidth=xt([n.hoverBorderWidth,e.hoverBorderWidth,a.borderWidth],void 0,i)},resyncElements:function(){var t=this.getMeta(),e=this.getDataset().data,i=t.data.length,n=e.length;n<i?t.data.splice(n,i-n):n>i&&this.insertElements(i,n-i)},insertElements:function(t,e){for(var i=0;i<e;++i)this.addElementAndReset(t+i)},onDataPush:function(){var t=arguments.length;this.insertElements(this.getDataset().data.length-t,t)},onDataPop:function(){this.getMeta().data.pop()},onDataShift:function(){this.getMeta().data.shift()},onDataSplice:function(t,e){this.getMeta().data.splice(t,e),this.insertElements(t,arguments.length-2)},onDataUnshift:function(){this.insertElements(0,arguments.length)}}),wt.extend=ut.inherits;var Mt=wt;st._set("global",{elements:{arc:{backgroundColor:st.global.defaultColor,borderColor:"#fff",borderWidth:2,borderAlign:"center"}}});var _t=pt.extend({inLabelRange:function(t){var e=this._view;return!!e&&Math.pow(t-e.x,2)<Math.pow(e.radius+e.hoverRadius,2)},inRange:function(t,e){var i=this._view;if(i){for(var n=ut.getAngleFromPoint(i,{x:t,y:e}),a=n.angle,o=n.distance,r=i.startAngle,s=i.endAngle;s<r;)s+=2*Math.PI;for(;a>s;)a-=2*Math.PI;for(;a<r;)a+=2*Math.PI;var l=a>=r&&a<=s,d=o>=i.innerRadius&&o<=i.outerRadius;return l&&d}return!1},getCenterPoint:function(){var t=this._view,e=(t.startAngle+t.endAngle)/2,i=(t.innerRadius+t.outerRadius)/2;return{x:t.x+Math.cos(e)*i,y:t.y+Math.sin(e)*i}},getArea:function(){var t=this._view;return Math.PI*((t.endAngle-t.startAngle)/(2*Math.PI))*(Math.pow(t.outerRadius,2)-Math.pow(t.innerRadius,2))},tooltipPosition:function(){var t=this._view,e=t.startAngle+(t.endAngle-t.startAngle)/2,i=(t.outerRadius-t.innerRadius)/2+t.innerRadius;return{x:t.x+Math.cos(e)*i,y:t.y+Math.sin(e)*i}},draw:function(){var t,e=this._chart.ctx,i=this._view,n=i.startAngle,a=i.endAngle,o="inner"===i.borderAlign?.33:0;e.save(),e.beginPath(),e.arc(i.x,i.y,Math.max(i.outerRadius-o,0),n,a),e.arc(i.x,i.y,i.innerRadius,a,n,!0),e.closePath(),e.fillStyle=i.backgroundColor,e.fill(),i.borderWidth&&("inner"===i.borderAlign?(e.beginPath(),t=o/i.outerRadius,e.arc(i.x,i.y,i.outerRadius,n-t,a+t),i.innerRadius>o?(t=o/i.innerRadius,e.arc(i.x,i.y,i.innerRadius-o,a+t,n-t,!0)):e.arc(i.x,i.y,o,a+Math.PI/2,n-Math.PI/2),e.closePath(),e.clip(),e.beginPath(),e.arc(i.x,i.y,i.outerRadius,n,a),e.arc(i.x,i.y,i.innerRadius,a,n,!0),e.closePath(),e.lineWidth=2*i.borderWidth,e.lineJoin="round"):(e.lineWidth=i.borderWidth,e.lineJoin="bevel"),e.strokeStyle=i.borderColor,e.stroke()),e.restore()}}),Ct=ut.valueOrDefault,St=st.global.defaultColor;st._set("global",{elements:{line:{tension:.4,backgroundColor:St,borderWidth:3,borderColor:St,borderCapStyle:"butt",borderDash:[],borderDashOffset:0,borderJoinStyle:"miter",capBezierPoints:!0,fill:!0}}});var Pt=pt.extend({draw:function(){var t,e,i,n,a=this._view,o=this._chart.ctx,r=a.spanGaps,s=this._children.slice(),l=st.global,d=l.elements.line,u=-1;for(this._loop&&s.length&&s.push(s[0]),o.save(),o.lineCap=a.borderCapStyle||d.borderCapStyle,o.setLineDash&&o.setLineDash(a.borderDash||d.borderDash),o.lineDashOffset=Ct(a.borderDashOffset,d.borderDashOffset),o.lineJoin=a.borderJoinStyle||d.borderJoinStyle,o.lineWidth=Ct(a.borderWidth,d.borderWidth),o.strokeStyle=a.borderColor||l.defaultColor,o.beginPath(),u=-1,t=0;t<s.length;++t)e=s[t],i=ut.previousItem(s,t),n=e._view,0===t?n.skip||(o.moveTo(n.x,n.y),u=t):(i=-1===u?i:s[u],n.skip||(u!==t-1&&!r||-1===u?o.moveTo(n.x,n.y):ut.canvas.lineTo(o,i._view,e._view),u=t));o.stroke(),o.restore()}}),It=ut.valueOrDefault,At=st.global.defaultColor;function Dt(t){var e=this._view;return!!e&&Math.abs(t-e.x)<e.radius+e.hitRadius}st._set("global",{elements:{point:{radius:3,pointStyle:"circle",backgroundColor:At,borderColor:At,borderWidth:1,hitRadius:1,hoverRadius:4,hoverBorderWidth:1}}});var Tt=pt.extend({inRange:function(t,e){var i=this._view;return!!i&&Math.pow(t-i.x,2)+Math.pow(e-i.y,2)<Math.pow(i.hitRadius+i.radius,2)},inLabelRange:Dt,inXRange:Dt,inYRange:function(t){var e=this._view;return!!e&&Math.abs(t-e.y)<e.radius+e.hitRadius},getCenterPoint:function(){var t=this._view;return{x:t.x,y:t.y}},getArea:function(){return Math.PI*Math.pow(this._view.radius,2)},tooltipPosition:function(){var t=this._view;return{x:t.x,y:t.y,padding:t.radius+t.borderWidth}},draw:function(t){var e=this._view,i=this._chart.ctx,n=e.pointStyle,a=e.rotation,o=e.radius,r=e.x,s=e.y,l=st.global,d=l.defaultColor;e.skip||(void 0===t||ut.canvas._isPointInArea(e,t))&&(i.strokeStyle=e.borderColor||d,i.lineWidth=It(e.borderWidth,l.elements.point.borderWidth),i.fillStyle=e.backgroundColor||d,ut.canvas.drawPoint(i,n,o,r,s,a))}}),Ft=st.global.defaultColor;function Lt(t){return t&&void 0!==t.width}function Rt(t){var e,i,n,a,o;return Lt(t)?(o=t.width/2,e=t.x-o,i=t.x+o,n=Math.min(t.y,t.base),a=Math.max(t.y,t.base)):(o=t.height/2,e=Math.min(t.x,t.base),i=Math.max(t.x,t.base),n=t.y-o,a=t.y+o),{left:e,top:n,right:i,bottom:a}}function Ot(t,e,i){return t===e?i:t===i?e:t}function zt(t,e,i){var n,a,o,r,s=t.borderWidth,l=function(t){var e=t.borderSkipped,i={};return e?(t.horizontal?t.base>t.x&&(e=Ot(e,"left","right")):t.base<t.y&&(e=Ot(e,"bottom","top")),i[e]=!0,i):i}(t);return ut.isObject(s)?(n=+s.top||0,a=+s.right||0,o=+s.bottom||0,r=+s.left||0):n=a=o=r=+s||0,{t:l.top||n<0?0:n>i?i:n,r:l.right||a<0?0:a>e?e:a,b:l.bottom||o<0?0:o>i?i:o,l:l.left||r<0?0:r>e?e:r}}function Bt(t,e,i){var n=null===e,a=null===i,o=!(!t||n&&a)&&Rt(t);return o&&(n||e>=o.left&&e<=o.right)&&(a||i>=o.top&&i<=o.bottom)}st._set("global",{elements:{rectangle:{backgroundColor:Ft,borderColor:Ft,borderSkipped:"bottom",borderWidth:0}}});var Nt=pt.extend({draw:function(){var t=this._chart.ctx,e=this._view,i=function(t){var e=Rt(t),i=e.right-e.left,n=e.bottom-e.top,a=zt(t,i/2,n/2);return{outer:{x:e.left,y:e.top,w:i,h:n},inner:{x:e.left+a.l,y:e.top+a.t,w:i-a.l-a.r,h:n-a.t-a.b}}}(e),n=i.outer,a=i.inner;t.fillStyle=e.backgroundColor,t.fillRect(n.x,n.y,n.w,n.h),n.w===a.w&&n.h===a.h||(t.save(),t.beginPath(),t.rect(n.x,n.y,n.w,n.h),t.clip(),t.fillStyle=e.borderColor,t.rect(a.x,a.y,a.w,a.h),t.fill("evenodd"),t.restore())},height:function(){var t=this._view;return t.base-t.y},inRange:function(t,e){return Bt(this._view,t,e)},inLabelRange:function(t,e){var i=this._view;return Lt(i)?Bt(i,t,null):Bt(i,null,e)},inXRange:function(t){return Bt(this._view,t,null)},inYRange:function(t){return Bt(this._view,null,t)},getCenterPoint:function(){var t,e,i=this._view;return Lt(i)?(t=i.x,e=(i.y+i.base)/2):(t=(i.x+i.base)/2,e=i.y),{x:t,y:e}},getArea:function(){var t=this._view;return Lt(t)?t.width*Math.abs(t.y-t.base):t.height*Math.abs(t.x-t.base)},tooltipPosition:function(){var t=this._view;return{x:t.x,y:t.y}}}),Wt={},Vt=_t,Et=Pt,Ht=Tt,jt=Nt;Wt.Arc=Vt,Wt.Line=Et,Wt.Point=Ht,Wt.Rectangle=jt;var qt=ut.options.resolve;st._set("bar",{hover:{mode:"label"},scales:{xAxes:[{type:"category",categoryPercentage:.8,barPercentage:.9,offset:!0,gridLines:{offsetGridLines:!0}}],yAxes:[{type:"linear"}]}});var Yt=Mt.extend({dataElementType:Wt.Rectangle,initialize:function(){var t;Mt.prototype.initialize.apply(this,arguments),(t=this.getMeta()).stack=this.getDataset().stack,t.bar=!0},update:function(t){var e,i,n=this.getMeta().data;for(this._ruler=this.getRuler(),e=0,i=n.length;e<i;++e)this.updateElement(n[e],e,t)},updateElement:function(t,e,i){var n=this,a=n.getMeta(),o=n.getDataset(),r=n._resolveElementOptions(t,e);t._xScale=n.getScaleForId(a.xAxisID),t._yScale=n.getScaleForId(a.yAxisID),t._datasetIndex=n.index,t._index=e,t._model={backgroundColor:r.backgroundColor,borderColor:r.borderColor,borderSkipped:r.borderSkipped,borderWidth:r.borderWidth,datasetLabel:o.label,label:n.chart.data.labels[e]},n._updateElementGeometry(t,e,i),t.pivot()},_updateElementGeometry:function(t,e,i){var n=this,a=t._model,o=n._getValueScale(),r=o.getBasePixel(),s=o.isHorizontal(),l=n._ruler||n.getRuler(),d=n.calculateBarValuePixels(n.index,e),u=n.calculateBarIndexPixels(n.index,e,l);a.horizontal=s,a.base=i?r:d.base,a.x=s?i?r:d.head:u.center,a.y=s?u.center:i?r:d.head,a.height=s?u.size:void 0,a.width=s?void 0:u.size},_getStacks:function(t){var e,i,n=this.chart,a=this._getIndexScale().options.stacked,o=void 0===t?n.data.datasets.length:t+1,r=[];for(e=0;e<o;++e)(i=n.getDatasetMeta(e)).bar&&n.isDatasetVisible(e)&&(!1===a||!0===a&&-1===r.indexOf(i.stack)||void 0===a&&(void 0===i.stack||-1===r.indexOf(i.stack)))&&r.push(i.stack);return r},getStackCount:function(){return this._getStacks().length},getStackIndex:function(t,e){var i=this._getStacks(t),n=void 0!==e?i.indexOf(e):-1;return-1===n?i.length-1:n},getRuler:function(){var t,e,i=this._getIndexScale(),n=this.getStackCount(),a=this.index,o=i.isHorizontal(),r=o?i.left:i.top,s=r+(o?i.width:i.height),l=[];for(t=0,e=this.getMeta().data.length;t<e;++t)l.push(i.getPixelForValue(null,t,a));return{min:ut.isNullOrUndef(i.options.barThickness)?function(t,e){var i,n,a,o,r=t.isHorizontal()?t.width:t.height,s=t.getTicks();for(a=1,o=e.length;a<o;++a)r=Math.min(r,Math.abs(e[a]-e[a-1]));for(a=0,o=s.length;a<o;++a)n=t.getPixelForTick(a),r=a>0?Math.min(r,n-i):r,i=n;return r}(i,l):-1,pixels:l,start:r,end:s,stackCount:n,scale:i}},calculateBarValuePixels:function(t,e){var i,n,a,o,r,s,l=this.chart,d=this.getMeta(),u=this._getValueScale(),h=u.isHorizontal(),c=l.data.datasets,f=+u.getRightValue(c[t].data[e]),g=u.options.minBarLength,p=u.options.stacked,m=d.stack,v=0;if(p||void 0===p&&void 0!==m)for(i=0;i<t;++i)(n=l.getDatasetMeta(i)).bar&&n.stack===m&&n.controller._getValueScaleId()===u.id&&l.isDatasetVisible(i)&&(a=+u.getRightValue(c[i].data[e]),(f<0&&a<0||f>=0&&a>0)&&(v+=a));return o=u.getPixelForValue(v),s=(r=u.getPixelForValue(v+f))-o,void 0!==g&&Math.abs(s)<g&&(s=g,r=f>=0&&!h||f<0&&h?o-g:o+g),{size:s,base:o,head:r,center:r+s/2}},calculateBarIndexPixels:function(t,e,i){var n=i.scale.options,a="flex"===n.barThickness?function(t,e,i){var n,a=e.pixels,o=a[t],r=t>0?a[t-1]:null,s=t<a.length-1?a[t+1]:null,l=i.categoryPercentage;return null===r&&(r=o-(null===s?e.end-e.start:s-o)),null===s&&(s=o+o-r),n=o-(o-Math.min(r,s))/2*l,{chunk:Math.abs(s-r)/2*l/e.stackCount,ratio:i.barPercentage,start:n}}(e,i,n):function(t,e,i){var n,a,o=i.barThickness,r=e.stackCount,s=e.pixels[t];return ut.isNullOrUndef(o)?(n=e.min*i.categoryPercentage,a=i.barPercentage):(n=o*r,a=1),{chunk:n/r,ratio:a,start:s-n/2}}(e,i,n),o=this.getStackIndex(t,this.getMeta().stack),r=a.start+a.chunk*o+a.chunk/2,s=Math.min(ut.valueOrDefault(n.maxBarThickness,1/0),a.chunk*a.ratio);return{base:r-s/2,head:r+s/2,center:r,size:s}},draw:function(){var t=this.chart,e=this._getValueScale(),i=this.getMeta().data,n=this.getDataset(),a=i.length,o=0;for(ut.canvas.clipArea(t.ctx,t.chartArea);o<a;++o)isNaN(e.getRightValue(n.data[o]))||i[o].draw();ut.canvas.unclipArea(t.ctx)},_resolveElementOptions:function(t,e){var i,n,a,o=this.chart,r=o.data.datasets[this.index],s=t.custom||{},l=o.options.elements.rectangle,d={},u={chart:o,dataIndex:e,dataset:r,datasetIndex:this.index},h=["backgroundColor","borderColor","borderSkipped","borderWidth"];for(i=0,n=h.length;i<n;++i)d[a=h[i]]=qt([s[a],r[a],l[a]],u,e);return d}}),Ut=ut.valueOrDefault,Xt=ut.options.resolve;st._set("bubble",{hover:{mode:"single"},scales:{xAxes:[{type:"linear",position:"bottom",id:"x-axis-0"}],yAxes:[{type:"linear",position:"left",id:"y-axis-0"}]},tooltips:{callbacks:{title:function(){return""},label:function(t,e){var i=e.datasets[t.datasetIndex].label||"",n=e.datasets[t.datasetIndex].data[t.index];return i+": ("+t.xLabel+", "+t.yLabel+", "+n.r+")"}}}});var Kt=Mt.extend({dataElementType:Wt.Point,update:function(t){var e=this,i=e.getMeta().data;ut.each(i,function(i,n){e.updateElement(i,n,t)})},updateElement:function(t,e,i){var n=this,a=n.getMeta(),o=t.custom||{},r=n.getScaleForId(a.xAxisID),s=n.getScaleForId(a.yAxisID),l=n._resolveElementOptions(t,e),d=n.getDataset().data[e],u=n.index,h=i?r.getPixelForDecimal(.5):r.getPixelForValue("object"==typeof d?d:NaN,e,u),c=i?s.getBasePixel():s.getPixelForValue(d,e,u);t._xScale=r,t._yScale=s,t._options=l,t._datasetIndex=u,t._index=e,t._model={backgroundColor:l.backgroundColor,borderColor:l.borderColor,borderWidth:l.borderWidth,hitRadius:l.hitRadius,pointStyle:l.pointStyle,rotation:l.rotation,radius:i?0:l.radius,skip:o.skip||isNaN(h)||isNaN(c),x:h,y:c},t.pivot()},setHoverStyle:function(t){var e=t._model,i=t._options,n=ut.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth,radius:e.radius},e.backgroundColor=Ut(i.hoverBackgroundColor,n(i.backgroundColor)),e.borderColor=Ut(i.hoverBorderColor,n(i.borderColor)),e.borderWidth=Ut(i.hoverBorderWidth,i.borderWidth),e.radius=i.radius+i.hoverRadius},_resolveElementOptions:function(t,e){var i,n,a,o=this.chart,r=o.data.datasets[this.index],s=t.custom||{},l=o.options.elements.point,d=r.data[e],u={},h={chart:o,dataIndex:e,dataset:r,datasetIndex:this.index},c=["backgroundColor","borderColor","borderWidth","hoverBackgroundColor","hoverBorderColor","hoverBorderWidth","hoverRadius","hitRadius","pointStyle","rotation"];for(i=0,n=c.length;i<n;++i)u[a=c[i]]=Xt([s[a],r[a],l[a]],h,e);return u.radius=Xt([s.radius,d?d.r:void 0,r.radius,l.radius],h,e),u}}),Gt=ut.options.resolve,Zt=ut.valueOrDefault;st._set("doughnut",{animation:{animateRotate:!0,animateScale:!1},hover:{mode:"single"},legendCallback:function(t){var e=[];e.push('<ul class="'+t.id+'-legend">');var i=t.data,n=i.datasets,a=i.labels;if(n.length)for(var o=0;o<n[0].data.length;++o)e.push('<li><span style="background-color:'+n[0].backgroundColor[o]+'"></span>'),a[o]&&e.push(a[o]),e.push("</li>");return e.push("</ul>"),e.join("")},legend:{labels:{generateLabels:function(t){var e=t.data;return e.labels.length&&e.datasets.length?e.labels.map(function(i,n){var a=t.getDatasetMeta(0),o=e.datasets[0],r=a.data[n],s=r&&r.custom||{},l=t.options.elements.arc;return{text:i,fillStyle:Gt([s.backgroundColor,o.backgroundColor,l.backgroundColor],void 0,n),strokeStyle:Gt([s.borderColor,o.borderColor,l.borderColor],void 0,n),lineWidth:Gt([s.borderWidth,o.borderWidth,l.borderWidth],void 0,n),hidden:isNaN(o.data[n])||a.data[n].hidden,index:n}}):[]}},onClick:function(t,e){var i,n,a,o=e.index,r=this.chart;for(i=0,n=(r.data.datasets||[]).length;i<n;++i)(a=r.getDatasetMeta(i)).data[o]&&(a.data[o].hidden=!a.data[o].hidden);r.update()}},cutoutPercentage:50,rotation:-.5*Math.PI,circumference:2*Math.PI,tooltips:{callbacks:{title:function(){return""},label:function(t,e){var i=e.labels[t.index],n=": "+e.datasets[t.datasetIndex].data[t.index];return ut.isArray(i)?(i=i.slice())[0]+=n:i+=n,i}}}});var $t=Mt.extend({dataElementType:Wt.Arc,linkScales:ut.noop,getRingIndex:function(t){for(var e=0,i=0;i<t;++i)this.chart.isDatasetVisible(i)&&++e;return e},update:function(t){var e,i,n=this,a=n.chart,o=a.chartArea,r=a.options,s=o.right-o.left,l=o.bottom-o.top,d=Math.min(s,l),u={x:0,y:0},h=n.getMeta(),c=h.data,f=r.cutoutPercentage,g=r.circumference,p=n._getRingWeight(n.index);if(g<2*Math.PI){var m=r.rotation%(2*Math.PI),v=(m+=2*Math.PI*(m>=Math.PI?-1:m<-Math.PI?1:0))+g,b={x:Math.cos(m),y:Math.sin(m)},x={x:Math.cos(v),y:Math.sin(v)},y=m<=0&&v>=0||m<=2*Math.PI&&2*Math.PI<=v,k=m<=.5*Math.PI&&.5*Math.PI<=v||m<=2.5*Math.PI&&2.5*Math.PI<=v,w=m<=-Math.PI&&-Math.PI<=v||m<=Math.PI&&Math.PI<=v,M=m<=.5*-Math.PI&&.5*-Math.PI<=v||m<=1.5*Math.PI&&1.5*Math.PI<=v,_=f/100,C={x:w?-1:Math.min(b.x*(b.x<0?1:_),x.x*(x.x<0?1:_)),y:M?-1:Math.min(b.y*(b.y<0?1:_),x.y*(x.y<0?1:_))},S={x:y?1:Math.max(b.x*(b.x>0?1:_),x.x*(x.x>0?1:_)),y:k?1:Math.max(b.y*(b.y>0?1:_),x.y*(x.y>0?1:_))},P={width:.5*(S.x-C.x),height:.5*(S.y-C.y)};d=Math.min(s/P.width,l/P.height),u={x:-.5*(S.x+C.x),y:-.5*(S.y+C.y)}}for(e=0,i=c.length;e<i;++e)c[e]._options=n._resolveElementOptions(c[e],e);for(a.borderWidth=n.getMaxBorderWidth(),a.outerRadius=Math.max((d-a.borderWidth)/2,0),a.innerRadius=Math.max(f?a.outerRadius/100*f:0,0),a.radiusLength=(a.outerRadius-a.innerRadius)/(n._getVisibleDatasetWeightTotal()||1),a.offsetX=u.x*a.outerRadius,a.offsetY=u.y*a.outerRadius,h.total=n.calculateTotal(),n.outerRadius=a.outerRadius-a.radiusLength*n._getRingWeightOffset(n.index),n.innerRadius=Math.max(n.outerRadius-a.radiusLength*p,0),e=0,i=c.length;e<i;++e)n.updateElement(c[e],e,t)},updateElement:function(t,e,i){var n=this,a=n.chart,o=a.chartArea,r=a.options,s=r.animation,l=(o.left+o.right)/2,d=(o.top+o.bottom)/2,u=r.rotation,h=r.rotation,c=n.getDataset(),f=i&&s.animateRotate?0:t.hidden?0:n.calculateCircumference(c.data[e])*(r.circumference/(2*Math.PI)),g=i&&s.animateScale?0:n.innerRadius,p=i&&s.animateScale?0:n.outerRadius,m=t._options||{};ut.extend(t,{_datasetIndex:n.index,_index:e,_model:{backgroundColor:m.backgroundColor,borderColor:m.borderColor,borderWidth:m.borderWidth,borderAlign:m.borderAlign,x:l+a.offsetX,y:d+a.offsetY,startAngle:u,endAngle:h,circumference:f,outerRadius:p,innerRadius:g,label:ut.valueAtIndexOrDefault(c.label,e,a.data.labels[e])}});var v=t._model;i&&s.animateRotate||(v.startAngle=0===e?r.rotation:n.getMeta().data[e-1]._model.endAngle,v.endAngle=v.startAngle+v.circumference),t.pivot()},calculateTotal:function(){var t,e=this.getDataset(),i=this.getMeta(),n=0;return ut.each(i.data,function(i,a){t=e.data[a],isNaN(t)||i.hidden||(n+=Math.abs(t))}),n},calculateCircumference:function(t){var e=this.getMeta().total;return e>0&&!isNaN(t)?2*Math.PI*(Math.abs(t)/e):0},getMaxBorderWidth:function(t){var e,i,n,a,o,r,s,l,d=0,u=this.chart;if(!t)for(e=0,i=u.data.datasets.length;e<i;++e)if(u.isDatasetVisible(e)){t=(n=u.getDatasetMeta(e)).data,e!==this.index&&(o=n.controller);break}if(!t)return 0;for(e=0,i=t.length;e<i;++e)a=t[e],"inner"!==(r=o?o._resolveElementOptions(a,e):a._options).borderAlign&&(s=r.borderWidth,d=(l=r.hoverBorderWidth)>(d=s>d?s:d)?l:d);return d},setHoverStyle:function(t){var e=t._model,i=t._options,n=ut.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth},e.backgroundColor=Zt(i.hoverBackgroundColor,n(i.backgroundColor)),e.borderColor=Zt(i.hoverBorderColor,n(i.borderColor)),e.borderWidth=Zt(i.hoverBorderWidth,i.borderWidth)},_resolveElementOptions:function(t,e){var i,n,a,o=this.chart,r=this.getDataset(),s=t.custom||{},l=o.options.elements.arc,d={},u={chart:o,dataIndex:e,dataset:r,datasetIndex:this.index},h=["backgroundColor","borderColor","borderWidth","borderAlign","hoverBackgroundColor","hoverBorderColor","hoverBorderWidth"];for(i=0,n=h.length;i<n;++i)d[a=h[i]]=Gt([s[a],r[a],l[a]],u,e);return d},_getRingWeightOffset:function(t){for(var e=0,i=0;i<t;++i)this.chart.isDatasetVisible(i)&&(e+=this._getRingWeight(i));return e},_getRingWeight:function(t){return Math.max(Zt(this.chart.data.datasets[t].weight,1),0)},_getVisibleDatasetWeightTotal:function(){return this._getRingWeightOffset(this.chart.data.datasets.length)}});st._set("horizontalBar",{hover:{mode:"index",axis:"y"},scales:{xAxes:[{type:"linear",position:"bottom"}],yAxes:[{type:"category",position:"left",categoryPercentage:.8,barPercentage:.9,offset:!0,gridLines:{offsetGridLines:!0}}]},elements:{rectangle:{borderSkipped:"left"}},tooltips:{mode:"index",axis:"y"}});var Jt=Yt.extend({_getValueScaleId:function(){return this.getMeta().xAxisID},_getIndexScaleId:function(){return this.getMeta().yAxisID}}),Qt=ut.valueOrDefault,te=ut.options.resolve,ee=ut.canvas._isPointInArea;function ie(t,e){return Qt(t.showLine,e.showLines)}st._set("line",{showLines:!0,spanGaps:!1,hover:{mode:"label"},scales:{xAxes:[{type:"category",id:"x-axis-0"}],yAxes:[{type:"linear",id:"y-axis-0"}]}});var ne=Mt.extend({datasetElementType:Wt.Line,dataElementType:Wt.Point,update:function(t){var e,i,n=this,a=n.getMeta(),o=a.dataset,r=a.data||[],s=n.getScaleForId(a.yAxisID),l=n.getDataset(),d=ie(l,n.chart.options);for(d&&(void 0!==l.tension&&void 0===l.lineTension&&(l.lineTension=l.tension),o._scale=s,o._datasetIndex=n.index,o._children=r,o._model=n._resolveLineOptions(o),o.pivot()),e=0,i=r.length;e<i;++e)n.updateElement(r[e],e,t);for(d&&0!==o._model.tension&&n.updateBezierControlPoints(),e=0,i=r.length;e<i;++e)r[e].pivot()},updateElement:function(t,e,i){var n,a,o=this,r=o.getMeta(),s=t.custom||{},l=o.getDataset(),d=o.index,u=l.data[e],h=o.getScaleForId(r.yAxisID),c=o.getScaleForId(r.xAxisID),f=r.dataset._model,g=o._resolvePointOptions(t,e);n=c.getPixelForValue("object"==typeof u?u:NaN,e,d),a=i?h.getBasePixel():o.calculatePointY(u,e,d),t._xScale=c,t._yScale=h,t._options=g,t._datasetIndex=d,t._index=e,t._model={x:n,y:a,skip:s.skip||isNaN(n)||isNaN(a),radius:g.radius,pointStyle:g.pointStyle,rotation:g.rotation,backgroundColor:g.backgroundColor,borderColor:g.borderColor,borderWidth:g.borderWidth,tension:Qt(s.tension,f?f.tension:0),steppedLine:!!f&&f.steppedLine,hitRadius:g.hitRadius}},_resolvePointOptions:function(t,e){var i,n,a,o=this.chart,r=o.data.datasets[this.index],s=t.custom||{},l=o.options.elements.point,d={},u={chart:o,dataIndex:e,dataset:r,datasetIndex:this.index},h={backgroundColor:"pointBackgroundColor",borderColor:"pointBorderColor",borderWidth:"pointBorderWidth",hitRadius:"pointHitRadius",hoverBackgroundColor:"pointHoverBackgroundColor",hoverBorderColor:"pointHoverBorderColor",hoverBorderWidth:"pointHoverBorderWidth",hoverRadius:"pointHoverRadius",pointStyle:"pointStyle",radius:"pointRadius",rotation:"pointRotation"},c=Object.keys(h);for(i=0,n=c.length;i<n;++i)d[a=c[i]]=te([s[a],r[h[a]],r[a],l[a]],u,e);return d},_resolveLineOptions:function(t){var e,i,n,a=this.chart,o=a.data.datasets[this.index],r=t.custom||{},s=a.options,l=s.elements.line,d={},u=["backgroundColor","borderWidth","borderColor","borderCapStyle","borderDash","borderDashOffset","borderJoinStyle","fill","cubicInterpolationMode"];for(e=0,i=u.length;e<i;++e)d[n=u[e]]=te([r[n],o[n],l[n]]);return d.spanGaps=Qt(o.spanGaps,s.spanGaps),d.tension=Qt(o.lineTension,l.tension),d.steppedLine=te([r.steppedLine,o.steppedLine,l.stepped]),d},calculatePointY:function(t,e,i){var n,a,o,r=this.chart,s=this.getMeta(),l=this.getScaleForId(s.yAxisID),d=0,u=0;if(l.options.stacked){for(n=0;n<i;n++)if(a=r.data.datasets[n],"line"===(o=r.getDatasetMeta(n)).type&&o.yAxisID===l.id&&r.isDatasetVisible(n)){var h=Number(l.getRightValue(a.data[e]));h<0?u+=h||0:d+=h||0}var c=Number(l.getRightValue(t));return c<0?l.getPixelForValue(u+c):l.getPixelForValue(d+c)}return l.getPixelForValue(t)},updateBezierControlPoints:function(){var t,e,i,n,a=this.chart,o=this.getMeta(),r=o.dataset._model,s=a.chartArea,l=o.data||[];function d(t,e,i){return Math.max(Math.min(t,i),e)}if(r.spanGaps&&(l=l.filter(function(t){return!t._model.skip})),"monotone"===r.cubicInterpolationMode)ut.splineCurveMonotone(l);else 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t,e=this.chart,i=this.getMeta(),n=i.data||[],a=e.chartArea,o=n.length,r=0;for(ie(this.getDataset(),e.options)&&(t=(i.dataset._model.borderWidth||0)/2,ut.canvas.clipArea(e.ctx,{left:a.left,right:a.right,top:a.top-t,bottom:a.bottom+t}),i.dataset.draw(),ut.canvas.unclipArea(e.ctx));r<o;++r)n[r].draw(a)},setHoverStyle:function(t){var e=t._model,i=t._options,n=ut.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth,radius:e.radius},e.backgroundColor=Qt(i.hoverBackgroundColor,n(i.backgroundColor)),e.borderColor=Qt(i.hoverBorderColor,n(i.borderColor)),e.borderWidth=Qt(i.hoverBorderWidth,i.borderWidth),e.radius=Qt(i.hoverRadius,i.radius)}}),ae=ut.options.resolve;st._set("polarArea",{scale:{type:"radialLinear",angleLines:{display:!1},gridLines:{circular:!0},pointLabels:{display:!1},ticks:{beginAtZero:!0}},animation:{animateRotate:!0,animateScale:!0},startAngle:-.5*Math.PI,legendCallback:function(t){var e=[];e.push('<ul class="'+t.id+'-legend">');var i=t.data,n=i.datasets,a=i.labels;if(n.length)for(var o=0;o<n[0].data.length;++o)e.push('<li><span style="background-color:'+n[0].backgroundColor[o]+'"></span>'),a[o]&&e.push(a[o]),e.push("</li>");return e.push("</ul>"),e.join("")},legend:{labels:{generateLabels:function(t){var e=t.data;return e.labels.length&&e.datasets.length?e.labels.map(function(i,n){var a=t.getDatasetMeta(0),o=e.datasets[0],r=a.data[n].custom||{},s=t.options.elements.arc;return{text:i,fillStyle:ae([r.backgroundColor,o.backgroundColor,s.backgroundColor],void 0,n),strokeStyle:ae([r.borderColor,o.borderColor,s.borderColor],void 0,n),lineWidth:ae([r.borderWidth,o.borderWidth,s.borderWidth],void 0,n),hidden:isNaN(o.data[n])||a.data[n].hidden,index:n}}):[]}},onClick:function(t,e){var i,n,a,o=e.index,r=this.chart;for(i=0,n=(r.data.datasets||[]).length;i<n;++i)(a=r.getDatasetMeta(i)).data[o].hidden=!a.data[o].hidden;r.update()}},tooltips:{callbacks:{title:function(){return""},label:function(t,e){return e.labels[t.index]+": "+t.yLabel}}}});var oe=Mt.extend({dataElementType:Wt.Arc,linkScales:ut.noop,update:function(t){var e,i,n,a=this,o=a.getDataset(),r=a.getMeta(),s=a.chart.options.startAngle||0,l=a._starts=[],d=a._angles=[],u=r.data;for(a._updateRadius(),r.count=a.countVisibleElements(),e=0,i=o.data.length;e<i;e++)l[e]=s,n=a._computeAngle(e),d[e]=n,s+=n;for(e=0,i=u.length;e<i;++e)u[e]._options=a._resolveElementOptions(u[e],e),a.updateElement(u[e],e,t)},_updateRadius:function(){var t=this,e=t.chart,i=e.chartArea,n=e.options,a=Math.min(i.right-i.left,i.bottom-i.top);e.outerRadius=Math.max(a/2,0),e.innerRadius=Math.max(n.cutoutPercentage?e.outerRadius/100*n.cutoutPercentage:1,0),e.radiusLength=(e.outerRadius-e.innerRadius)/e.getVisibleDatasetCount(),t.outerRadius=e.outerRadius-e.radiusLength*t.index,t.innerRadius=t.outerRadius-e.radiusLength},updateElement:function(t,e,i){var n=this,a=n.chart,o=n.getDataset(),r=a.options,s=r.animation,l=a.scale,d=a.data.labels,u=l.xCenter,h=l.yCenter,c=r.startAngle,f=t.hidden?0:l.getDistanceFromCenterForValue(o.data[e]),g=n._starts[e],p=g+(t.hidden?0:n._angles[e]),m=s.animateScale?0:l.getDistanceFromCenterForValue(o.data[e]),v=t._options||{};ut.extend(t,{_datasetIndex:n.index,_index:e,_scale:l,_model:{backgroundColor:v.backgroundColor,borderColor:v.borderColor,borderWidth:v.borderWidth,borderAlign:v.borderAlign,x:u,y:h,innerRadius:0,outerRadius:i?m:f,startAngle:i&&s.animateRotate?c:g,endAngle:i&&s.animateRotate?c:p,label:ut.valueAtIndexOrDefault(d,e,d[e])}}),t.pivot()},countVisibleElements:function(){var t=this.getDataset(),e=this.getMeta(),i=0;return ut.each(e.data,function(e,n){isNaN(t.data[n])||e.hidden||i++}),i},setHoverStyle:function(t){var e=t._model,i=t._options,n=ut.getHoverColor,a=ut.valueOrDefault;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth},e.backgroundColor=a(i.hoverBackgroundColor,n(i.backgroundColor)),e.borderColor=a(i.hoverBorderColor,n(i.borderColor)),e.borderWidth=a(i.hoverBorderWidth,i.borderWidth)},_resolveElementOptions:function(t,e){var i,n,a,o=this.chart,r=this.getDataset(),s=t.custom||{},l=o.options.elements.arc,d={},u={chart:o,dataIndex:e,dataset:r,datasetIndex:this.index},h=["backgroundColor","borderColor","borderWidth","borderAlign","hoverBackgroundColor","hoverBorderColor","hoverBorderWidth"];for(i=0,n=h.length;i<n;++i)d[a=h[i]]=ae([s[a],r[a],l[a]],u,e);return d},_computeAngle:function(t){var e=this,i=this.getMeta().count,n=e.getDataset(),a=e.getMeta();if(isNaN(n.data[t])||a.data[t].hidden)return 0;var o={chart:e.chart,dataIndex:t,dataset:n,datasetIndex:e.index};return ae([e.chart.options.elements.arc.angle,2*Math.PI/i],o,t)}});st._set("pie",ut.clone(st.doughnut)),st._set("pie",{cutoutPercentage:0});var re=$t,se=ut.valueOrDefault,le=ut.options.resolve;st._set("radar",{scale:{type:"radialLinear"},elements:{line:{tension:0}}});var de=Mt.extend({datasetElementType:Wt.Line,dataElementType:Wt.Point,linkScales:ut.noop,update:function(t){var e,i,n=this,a=n.getMeta(),o=a.dataset,r=a.data||[],s=n.chart.scale,l=n.getDataset();for(void 0!==l.tension&&void 0===l.lineTension&&(l.lineTension=l.tension),o._scale=s,o._datasetIndex=n.index,o._children=r,o._loop=!0,o._model=n._resolveLineOptions(o),o.pivot(),e=0,i=r.length;e<i;++e)n.updateElement(r[e],e,t);for(n.updateBezierControlPoints(),e=0,i=r.length;e<i;++e)r[e].pivot()},updateElement:function(t,e,i){var n=this,a=t.custom||{},o=n.getDataset(),r=n.chart.scale,s=r.getPointPositionForValue(e,o.data[e]),l=n._resolvePointOptions(t,e),d=n.getMeta().dataset._model,u=i?r.xCenter:s.x,h=i?r.yCenter:s.y;t._scale=r,t._options=l,t._datasetIndex=n.index,t._index=e,t._model={x:u,y:h,skip:a.skip||isNaN(u)||isNaN(h),radius:l.radius,pointStyle:l.pointStyle,rotation:l.rotation,backgroundColor:l.backgroundColor,borderColor:l.borderColor,borderWidth:l.borderWidth,tension:se(a.tension,d?d.tension:0),hitRadius:l.hitRadius}},_resolvePointOptions:function(t,e){var i,n,a,o=this.chart,r=o.data.datasets[this.index],s=t.custom||{},l=o.options.elements.point,d={},u={chart:o,dataIndex:e,dataset:r,datasetIndex:this.index},h={backgroundColor:"pointBackgroundColor",borderColor:"pointBorderColor",borderWidth:"pointBorderWidth",hitRadius:"pointHitRadius",hoverBackgroundColor:"pointHoverBackgroundColor",hoverBorderColor:"pointHoverBorderColor",hoverBorderWidth:"pointHoverBorderWidth",hoverRadius:"pointHoverRadius",pointStyle:"pointStyle",radius:"pointRadius",rotation:"pointRotation"},c=Object.keys(h);for(i=0,n=c.length;i<n;++i)d[a=c[i]]=le([s[a],r[h[a]],r[a],l[a]],u,e);return d},_resolveLineOptions:function(t){var e,i,n,a=this.chart,o=a.data.datasets[this.index],r=t.custom||{},s=a.options.elements.line,l={},d=["backgroundColor","borderWidth","borderColor","borderCapStyle","borderDash","borderDashOffset","borderJoinStyle","fill"];for(e=0,i=d.length;e<i;++e)l[n=d[e]]=le([r[n],o[n],s[n]]);return l.tension=se(o.lineTension,s.tension),l},updateBezierControlPoints:function(){var t,e,i,n,a=this.getMeta(),o=this.chart.chartArea,r=a.data||[];function s(t,e,i){return Math.max(Math.min(t,i),e)}for(t=0,e=r.length;t<e;++t)i=r[t]._model,n=ut.splineCurve(ut.previousItem(r,t,!0)._model,i,ut.nextItem(r,t,!0)._model,i.tension),i.controlPointPreviousX=s(n.previous.x,o.left,o.right),i.controlPointPreviousY=s(n.previous.y,o.top,o.bottom),i.controlPointNextX=s(n.next.x,o.left,o.right),i.controlPointNextY=s(n.next.y,o.top,o.bottom)},setHoverStyle:function(t){var e=t._model,i=t._options,n=ut.getHoverColor;t.$previousStyle={backgroundColor:e.backgroundColor,borderColor:e.borderColor,borderWidth:e.borderWidth,radius:e.radius},e.backgroundColor=se(i.hoverBackgroundColor,n(i.backgroundColor)),e.borderColor=se(i.hoverBorderColor,n(i.borderColor)),e.borderWidth=se(i.hoverBorderWidth,i.borderWidth),e.radius=se(i.hoverRadius,i.radius)}});st._set("scatter",{hover:{mode:"single"},scales:{xAxes:[{id:"x-axis-1",type:"linear",position:"bottom"}],yAxes:[{id:"y-axis-1",type:"linear",position:"left"}]},showLines:!1,tooltips:{callbacks:{title:function(){return""},label:function(t){return"("+t.xLabel+", "+t.yLabel+")"}}}});var ue={bar:Yt,bubble:Kt,doughnut:$t,horizontalBar:Jt,line:ne,polarArea:oe,pie:re,radar:de,scatter:ne};function he(t,e){return t.native?{x:t.x,y:t.y}:ut.getRelativePosition(t,e)}function ce(t,e){var i,n,a,o,r;for(n=0,o=t.data.datasets.length;n<o;++n)if(t.isDatasetVisible(n))for(a=0,r=(i=t.getDatasetMeta(n)).data.length;a<r;++a){var s=i.data[a];s._view.skip||e(s)}}function fe(t,e){var i=[];return ce(t,function(t){t.inRange(e.x,e.y)&&i.push(t)}),i}function ge(t,e,i,n){var a=Number.POSITIVE_INFINITY,o=[];return ce(t,function(t){if(!i||t.inRange(e.x,e.y)){var r=t.getCenterPoint(),s=n(e,r);s<a?(o=[t],a=s):s===a&&o.push(t)}}),o}function pe(t){var e=-1!==t.indexOf("x"),i=-1!==t.indexOf("y");return function(t,n){var a=e?Math.abs(t.x-n.x):0,o=i?Math.abs(t.y-n.y):0;return Math.sqrt(Math.pow(a,2)+Math.pow(o,2))}}function me(t,e,i){var n=he(e,t);i.axis=i.axis||"x";var a=pe(i.axis),o=i.intersect?fe(t,n):ge(t,n,!1,a),r=[];return o.length?(t.data.datasets.forEach(function(e,i){if(t.isDatasetVisible(i)){var n=t.getDatasetMeta(i).data[o[0]._index];n&&!n._view.skip&&r.push(n)}}),r):[]}var ve={modes:{single:function(t,e){var i=he(e,t),n=[];return ce(t,function(t){if(t.inRange(i.x,i.y))return n.push(t),n}),n.slice(0,1)},label:me,index:me,dataset:function(t,e,i){var n=he(e,t);i.axis=i.axis||"xy";var a=pe(i.axis),o=i.intersect?fe(t,n):ge(t,n,!1,a);return o.length>0&&(o=t.getDatasetMeta(o[0]._datasetIndex).data),o},"x-axis":function(t,e){return me(t,e,{intersect:!1})},point:function(t,e){return fe(t,he(e,t))},nearest:function(t,e,i){var n=he(e,t);i.axis=i.axis||"xy";var a=pe(i.axis);return ge(t,n,i.intersect,a)},x:function(t,e,i){var n=he(e,t),a=[],o=!1;return ce(t,function(t){t.inXRange(n.x)&&a.push(t),t.inRange(n.x,n.y)&&(o=!0)}),i.intersect&&!o&&(a=[]),a},y:function(t,e,i){var n=he(e,t),a=[],o=!1;return ce(t,function(t){t.inYRange(n.y)&&a.push(t),t.inRange(n.x,n.y)&&(o=!0)}),i.intersect&&!o&&(a=[]),a}}};function be(t,e){return ut.where(t,function(t){return t.position===e})}function xe(t,e){t.forEach(function(t,e){return t._tmpIndex_=e,t}),t.sort(function(t,i){var n=e?i:t,a=e?t:i;return n.weight===a.weight?n._tmpIndex_-a._tmpIndex_:n.weight-a.weight}),t.forEach(function(t){delete t._tmpIndex_})}function 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n,a=e.bodyFontSize,o=e.bodySpacing,r=e._bodyAlign,s=e.body,l=e.displayColors,d=e.labelColors,u=0,h=l?Ke(e,"left"):0;i.textAlign=r,i.textBaseline="top",i.font=ut.fontString(a,e._bodyFontStyle,e._bodyFontFamily),t.x=Ke(e,r);var c=function(e){i.fillText(e,t.x+u,t.y),t.y+=a+o};i.fillStyle=e.bodyFontColor,ut.each(e.beforeBody,c),u=l&&"right"!==r?"center"===r?a/2+1:a+2:0,ut.each(s,function(o,r){n=e.labelTextColors[r],i.fillStyle=n,ut.each(o.before,c),ut.each(o.lines,function(o){l&&(i.fillStyle=e.legendColorBackground,i.fillRect(h,t.y,a,a),i.lineWidth=1,i.strokeStyle=d[r].borderColor,i.strokeRect(h,t.y,a,a),i.fillStyle=d[r].backgroundColor,i.fillRect(h+1,t.y+1,a-2,a-2),i.fillStyle=n),c(o)}),ut.each(o.after,c)}),u=0,ut.each(e.afterBody,c),t.y-=o},drawFooter:function(t,e,i){var n=e.footer;n.length&&(t.x=Ke(e,e._footerAlign),t.y+=e.footerMarginTop,i.textAlign=e._footerAlign,i.textBaseline="top",i.fillStyle=e.footerFontColor,i.font=ut.fontString(e.footerFontSize,e._footerFontStyle,e._footerFontFamily),ut.each(n,function(n){i.fillText(n,t.x,t.y),t.y+=e.footerFontSize+e.footerSpacing}))},drawBackground:function(t,e,i,n){i.fillStyle=e.backgroundColor,i.strokeStyle=e.borderColor,i.lineWidth=e.borderWidth;var a=e.xAlign,o=e.yAlign,r=t.x,s=t.y,l=n.width,d=n.height,u=e.cornerRadius;i.beginPath(),i.moveTo(r+u,s),"top"===o&&this.drawCaret(t,n),i.lineTo(r+l-u,s),i.quadraticCurveTo(r+l,s,r+l,s+u),"center"===o&&"right"===a&&this.drawCaret(t,n),i.lineTo(r+l,s+d-u),i.quadraticCurveTo(r+l,s+d,r+l-u,s+d),"bottom"===o&&this.drawCaret(t,n),i.lineTo(r+u,s+d),i.quadraticCurveTo(r,s+d,r,s+d-u),"center"===o&&"left"===a&&this.drawCaret(t,n),i.lineTo(r,s+u),i.quadraticCurveTo(r,s,r+u,s),i.closePath(),i.fill(),e.borderWidth>0&&i.stroke()},draw:function(){var t=this._chart.ctx,e=this._view;if(0!==e.opacity){var i={width:e.width,height:e.height},n={x:e.x,y:e.y},a=Math.abs(e.opacity<.001)?0:e.opacity,o=e.title.length||e.beforeBody.length||e.body.length||e.afterBody.length||e.footer.length;this._options.enabled&&o&&(t.save(),t.globalAlpha=a,this.drawBackground(n,e,t,i),n.y+=e.yPadding,this.drawTitle(n,e,t),this.drawBody(n,e,t),this.drawFooter(n,e,t),t.restore())}},handleEvent:function(t){var e,i=this,n=i._options;return i._lastActive=i._lastActive||[],"mouseout"===t.type?i._active=[]:i._active=i._chart.getElementsAtEventForMode(t,n.mode,n),(e=!ut.arrayEquals(i._active,i._lastActive))&&(i._lastActive=i._active,(n.enabled||n.custom)&&(i._eventPosition={x:t.x,y:t.y},i.update(!0),i.pivot())),e}}),$e=qe,Je=Ze;Je.positioners=$e;var Qe=ut.valueOrDefault;function ti(){return ut.merge({},[].slice.call(arguments),{merger:function(t,e,i,n){if("xAxes"===t||"yAxes"===t){var a,o,r,s=i[t].length;for(e[t]||(e[t]=[]),a=0;a<s;++a)r=i[t][a],o=Qe(r.type,"xAxes"===t?"category":"linear"),a>=e[t].length&&e[t].push({}),!e[t][a].type||r.type&&r.type!==e[t][a].type?ut.merge(e[t][a],[He.getScaleDefaults(o),r]):ut.merge(e[t][a],r)}else ut._merger(t,e,i,n)}})}function ei(){return ut.merge({},[].slice.call(arguments),{merger:function(t,e,i,n){var a=e[t]||{},o=i[t];"scales"===t?e[t]=ti(a,o):"scale"===t?e[t]=ut.merge(a,[He.getScaleDefaults(o.type),o]):ut._merger(t,e,i,n)}})}function ii(t){return"top"===t||"bottom"===t}st._set("global",{elements:{},events:["mousemove","mouseout","click","touchstart","touchmove"],hover:{onHover:null,mode:"nearest",intersect:!0,animationDuration:400},onClick:null,maintainAspectRatio:!0,responsive:!0,responsiveAnimationDuration:0});var ni=function(t,e){return this.construct(t,e),this};ut.extend(ni.prototype,{construct:function(t,e){var i=this;e=function(t){var e=(t=t||{}).data=t.data||{};return e.datasets=e.datasets||[],e.labels=e.labels||[],t.options=ei(st.global,st[t.type],t.options||{}),t}(e);var n=Ve.acquireContext(t,e),a=n&&n.canvas,o=a&&a.height,r=a&&a.width;i.id=ut.uid(),i.ctx=n,i.canvas=a,i.config=e,i.width=r,i.height=o,i.aspectRatio=o?r/o:null,i.options=e.options,i._bufferedRender=!1,i.chart=i,i.controller=i,ni.instances[i.id]=i,Object.defineProperty(i,"data",{get:function(){return i.config.data},set:function(t){i.config.data=t}}),n&&a?(i.initialize(),i.update()):console.error("Failed to create chart: can't acquire context from the given item")},initialize:function(){var t=this;return Ee.notify(t,"beforeInit"),ut.retinaScale(t,t.options.devicePixelRatio),t.bindEvents(),t.options.responsive&&t.resize(!0),t.ensureScalesHaveIDs(),t.buildOrUpdateScales(),t.initToolTip(),Ee.notify(t,"afterInit"),t},clear:function(){return ut.canvas.clear(this),this},stop:function(){return bt.cancelAnimation(this),this},resize:function(t){var e=this,i=e.options,n=e.canvas,a=i.maintainAspectRatio&&e.aspectRatio||null,o=Math.max(0,Math.floor(ut.getMaximumWidth(n))),r=Math.max(0,Math.floor(a?o/a:ut.getMaximumHeight(n)));if((e.width!==o||e.height!==r)&&(n.width=e.width=o,n.height=e.height=r,n.style.width=o+"px",n.style.height=r+"px",ut.retinaScale(e,i.devicePixelRatio),!t)){var s={width:o,height:r};Ee.notify(e,"resize",[s]),i.onResize&&i.onResize(e,s),e.stop(),e.update({duration:i.responsiveAnimationDuration})}},ensureScalesHaveIDs:function(){var t=this.options,e=t.scales||{},i=t.scale;ut.each(e.xAxes,function(t,e){t.id=t.id||"x-axis-"+e}),ut.each(e.yAxes,function(t,e){t.id=t.id||"y-axis-"+e}),i&&(i.id=i.id||"scale")},buildOrUpdateScales:function(){var t=this,e=t.options,i=t.scales||{},n=[],a=Object.keys(i).reduce(function(t,e){return t[e]=!1,t},{});e.scales&&(n=n.concat((e.scales.xAxes||[]).map(function(t){return{options:t,dtype:"category",dposition:"bottom"}}),(e.scales.yAxes||[]).map(function(t){return{options:t,dtype:"linear",dposition:"left"}}))),e.scale&&n.push({options:e.scale,dtype:"radialLinear",isDefault:!0,dposition:"chartArea"}),ut.each(n,function(e){var n=e.options,o=n.id,r=Qe(n.type,e.dtype);ii(n.position)!==ii(e.dposition)&&(n.position=e.dposition),a[o]=!0;var s=null;if(o in i&&i[o].type===r)(s=i[o]).options=n,s.ctx=t.ctx,s.chart=t;else{var l=He.getScaleConstructor(r);if(!l)return;s=new l({id:o,type:r,options:n,ctx:t.ctx,chart:t}),i[s.id]=s}s.mergeTicksOptions(),e.isDefault&&(t.scale=s)}),ut.each(a,function(t,e){t||delete i[e]}),t.scales=i,He.addScalesToLayout(this)},buildOrUpdateControllers:function(){var t=this,e=[];return ut.each(t.data.datasets,function(i,n){var a=t.getDatasetMeta(n),o=i.type||t.config.type;if(a.type&&a.type!==o&&(t.destroyDatasetMeta(n),a=t.getDatasetMeta(n)),a.type=o,a.controller)a.controller.updateIndex(n),a.controller.linkScales();else{var r=ue[a.type];if(void 0===r)throw new Error('"'+a.type+'" is not a chart type.');a.controller=new r(t,n),e.push(a.controller)}},t),e},resetElements:function(){var t=this;ut.each(t.data.datasets,function(e,i){t.getDatasetMeta(i).controller.reset()},t)},reset:function(){this.resetElements(),this.tooltip.initialize()},update:function(t){var e,i,n=this;if(t&&"object"==typeof t||(t={duration:t,lazy:arguments[1]}),i=(e=n).options,ut.each(e.scales,function(t){ke.removeBox(e,t)}),i=ei(st.global,st[e.config.type],i),e.options=e.config.options=i,e.ensureScalesHaveIDs(),e.buildOrUpdateScales(),e.tooltip._options=i.tooltips,e.tooltip.initialize(),Ee._invalidate(n),!1!==Ee.notify(n,"beforeUpdate")){n.tooltip._data=n.data;var a=n.buildOrUpdateControllers();ut.each(n.data.datasets,function(t,e){n.getDatasetMeta(e).controller.buildOrUpdateElements()},n),n.updateLayout(),n.options.animation&&n.options.animation.duration&&ut.each(a,function(t){t.reset()}),n.updateDatasets(),n.tooltip.initialize(),n.lastActive=[],Ee.notify(n,"afterUpdate"),n._bufferedRender?n._bufferedRequest={duration:t.duration,easing:t.easing,lazy:t.lazy}:n.render(t)}},updateLayout:function(){!1!==Ee.notify(this,"beforeLayout")&&(ke.update(this,this.width,this.height),Ee.notify(this,"afterScaleUpdate"),Ee.notify(this,"afterLayout"))},updateDatasets:function(){if(!1!==Ee.notify(this,"beforeDatasetsUpdate")){for(var t=0,e=this.data.datasets.length;t<e;++t)this.updateDataset(t);Ee.notify(this,"afterDatasetsUpdate")}},updateDataset:function(t){var e=this.getDatasetMeta(t),i={meta:e,index:t};!1!==Ee.notify(this,"beforeDatasetUpdate",[i])&&(e.controller.update(),Ee.notify(this,"afterDatasetUpdate",[i]))},render:function(t){var e=this;t&&"object"==typeof t||(t={duration:t,lazy:arguments[1]});var i=e.options.animation,n=Qe(t.duration,i&&i.duration),a=t.lazy;if(!1!==Ee.notify(e,"beforeRender")){var o=function(t){Ee.notify(e,"afterRender"),ut.callback(i&&i.onComplete,[t],e)};if(i&&n){var r=new vt({numSteps:n/16.66,easing:t.easing||i.easing,render:function(t,e){var i=ut.easing.effects[e.easing],n=e.currentStep,a=n/e.numSteps;t.draw(i(a),a,n)},onAnimationProgress:i.onProgress,onAnimationComplete:o});bt.addAnimation(e,r,n,a)}else e.draw(),o(new vt({numSteps:0,chart:e}));return e}},draw:function(t){var e=this;e.clear(),ut.isNullOrUndef(t)&&(t=1),e.transition(t),e.width<=0||e.height<=0||!1!==Ee.notify(e,"beforeDraw",[t])&&(ut.each(e.boxes,function(t){t.draw(e.chartArea)},e),e.drawDatasets(t),e._drawTooltip(t),Ee.notify(e,"afterDraw",[t]))},transition:function(t){for(var e=0,i=(this.data.datasets||[]).length;e<i;++e)this.isDatasetVisible(e)&&this.getDatasetMeta(e).controller.transition(t);this.tooltip.transition(t)},drawDatasets:function(t){var e=this;if(!1!==Ee.notify(e,"beforeDatasetsDraw",[t])){for(var i=(e.data.datasets||[]).length-1;i>=0;--i)e.isDatasetVisible(i)&&e.drawDataset(i,t);Ee.notify(e,"afterDatasetsDraw",[t])}},drawDataset:function(t,e){var i=this.getDatasetMeta(t),n={meta:i,index:t,easingValue:e};!1!==Ee.notify(this,"beforeDatasetDraw",[n])&&(i.controller.draw(e),Ee.notify(this,"afterDatasetDraw",[n]))},_drawTooltip:function(t){var e=this.tooltip,i={tooltip:e,easingValue:t};!1!==Ee.notify(this,"beforeTooltipDraw",[i])&&(e.draw(),Ee.notify(this,"afterTooltipDraw",[i]))},getElementAtEvent:function(t){return ve.modes.single(this,t)},getElementsAtEvent:function(t){return ve.modes.label(this,t,{intersect:!0})},getElementsAtXAxis:function(t){return ve.modes["x-axis"](this,t,{intersect:!0})},getElementsAtEventForMode:function(t,e,i){var n=ve.modes[e];return"function"==typeof n?n(this,t,i):[]},getDatasetAtEvent:function(t){return ve.modes.dataset(this,t,{intersect:!0})},getDatasetMeta:function(t){var e=this.data.datasets[t];e._meta||(e._meta={});var i=e._meta[this.id];return i||(i=e._meta[this.id]={type:null,data:[],dataset:null,controller:null,hidden:null,xAxisID:null,yAxisID:null}),i},getVisibleDatasetCount:function(){for(var t=0,e=0,i=this.data.datasets.length;e<i;++e)this.isDatasetVisible(e)&&t++;return t},isDatasetVisible:function(t){var e=this.getDatasetMeta(t);return"boolean"==typeof e.hidden?!e.hidden:!this.data.datasets[t].hidden},generateLegend:function(){return this.options.legendCallback(this)},destroyDatasetMeta:function(t){var e=this.id,i=this.data.datasets[t],n=i._meta&&i._meta[e];n&&(n.controller.destroy(),delete i._meta[e])},destroy:function(){var t,e,i=this,n=i.canvas;for(i.stop(),t=0,e=i.data.datasets.length;t<e;++t)i.destroyDatasetMeta(t);n&&(i.unbindEvents(),ut.canvas.clear(i),Ve.releaseContext(i.ctx),i.canvas=null,i.ctx=null),Ee.notify(i,"destroy"),delete ni.instances[i.id]},toBase64Image:function(){return this.canvas.toDataURL.apply(this.canvas,arguments)},initToolTip:function(){var t=this;t.tooltip=new Je({_chart:t,_chartInstance:t,_data:t.data,_options:t.options.tooltips},t)},bindEvents:function(){var t=this,e=t._listeners={},i=function(){t.eventHandler.apply(t,arguments)};ut.each(t.options.events,function(n){Ve.addEventListener(t,n,i),e[n]=i}),t.options.responsive&&(i=function(){t.resize()},Ve.addEventListener(t,"resize",i),e.resize=i)},unbindEvents:function(){var t=this,e=t._listeners;e&&(delete t._listeners,ut.each(e,function(e,i){Ve.removeEventListener(t,i,e)}))},updateHoverStyle:function(t,e,i){var n,a,o,r=i?"setHoverStyle":"removeHoverStyle";for(a=0,o=t.length;a<o;++a)(n=t[a])&&this.getDatasetMeta(n._datasetIndex).controller[r](n)},eventHandler:function(t){var e=this,i=e.tooltip;if(!1!==Ee.notify(e,"beforeEvent",[t])){e._bufferedRender=!0,e._bufferedRequest=null;var n=e.handleEvent(t);i&&(n=i._start?i.handleEvent(t):n|i.handleEvent(t)),Ee.notify(e,"afterEvent",[t]);var a=e._bufferedRequest;return a?e.render(a):n&&!e.animating&&(e.stop(),e.render({duration:e.options.hover.animationDuration,lazy:!0})),e._bufferedRender=!1,e._bufferedRequest=null,e}},handleEvent:function(t){var e,i=this,n=i.options||{},a=n.hover;return i.lastActive=i.lastActive||[],"mouseout"===t.type?i.active=[]:i.active=i.getElementsAtEventForMode(t,a.mode,a),ut.callback(n.onHover||n.hover.onHover,[t.native,i.active],i),"mouseup"!==t.type&&"click"!==t.type||n.onClick&&n.onClick.call(i,t.native,i.active),i.lastActive.length&&i.updateHoverStyle(i.lastActive,a.mode,!1),i.active.length&&a.mode&&i.updateHoverStyle(i.active,a.mode,!0),e=!ut.arrayEquals(i.active,i.lastActive),i.lastActive=i.active,e}}),ni.instances={};var ai=ni;ni.Controller=ni,ni.types={},ut.configMerge=ei,ut.scaleMerge=ti;function oi(){throw new Error("This method is not implemented: either no adapter can be found or an incomplete integration was provided.")}function ri(t){this.options=t||{}}ut.extend(ri.prototype,{formats:oi,parse:oi,format:oi,add:oi,diff:oi,startOf:oi,endOf:oi,_create:function(t){return t}}),ri.override=function(t){ut.extend(ri.prototype,t)};var si={_date:ri},li={formatters:{values:function(t){return ut.isArray(t)?t:""+t},linear:function(t,e,i){var n=i.length>3?i[2]-i[1]:i[1]-i[0];Math.abs(n)>1&&t!==Math.floor(t)&&(n=t-Math.floor(t));var a=ut.log10(Math.abs(n)),o="";if(0!==t)if(Math.max(Math.abs(i[0]),Math.abs(i[i.length-1]))<1e-4){var r=ut.log10(Math.abs(t));o=t.toExponential(Math.floor(r)-Math.floor(a))}else{var s=-1*Math.floor(a);s=Math.max(Math.min(s,20),0),o=t.toFixed(s)}else o="0";return o},logarithmic:function(t,e,i){var n=t/Math.pow(10,Math.floor(ut.log10(t)));return 0===t?"0":1===n||2===n||5===n||0===e||e===i.length-1?t.toExponential():""}}},di=ut.valueOrDefault,ui=ut.valueAtIndexOrDefault;function hi(t){var e,i,n=[];for(e=0,i=t.length;e<i;++e)n.push(t[e].label);return n}function ci(t,e,i){return ut.isArray(e)?ut.longestText(t,i,e):t.measureText(e).width}st._set("scale",{display:!0,position:"left",offset:!1,gridLines:{display:!0,color:"rgba(0, 0, 0, 0.1)",lineWidth:1,drawBorder:!0,drawOnChartArea:!0,drawTicks:!0,tickMarkLength:10,zeroLineWidth:1,zeroLineColor:"rgba(0,0,0,0.25)",zeroLineBorderDash:[],zeroLineBorderDashOffset:0,offsetGridLines:!1,borderDash:[],borderDashOffset:0},scaleLabel:{display:!1,labelString:"",padding:{top:4,bottom:4}},ticks:{beginAtZero:!1,minRotation:0,maxRotation:50,mirror:!1,padding:0,reverse:!1,display:!0,autoSkip:!0,autoSkipPadding:0,labelOffset:0,callback:li.formatters.values,minor:{},major:{}}});var fi=pt.extend({getPadding:function(){return{left:this.paddingLeft||0,top:this.paddingTop||0,right:this.paddingRight||0,bottom:this.paddingBottom||0}},getTicks:function(){return this._ticks},mergeTicksOptions:function(){var t=this.options.ticks;for(var e in!1===t.minor&&(t.minor={display:!1}),!1===t.major&&(t.major={display:!1}),t)"major"!==e&&"minor"!==e&&(void 0===t.minor[e]&&(t.minor[e]=t[e]),void 0===t.major[e]&&(t.major[e]=t[e]))},beforeUpdate:function(){ut.callback(this.options.beforeUpdate,[this])},update:function(t,e,i){var n,a,o,r,s,l,d=this;for(d.beforeUpdate(),d.maxWidth=t,d.maxHeight=e,d.margins=ut.extend({left:0,right:0,top:0,bottom:0},i),d._maxLabelLines=0,d.longestLabelWidth=0,d.longestTextCache=d.longestTextCache||{},d.beforeSetDimensions(),d.setDimensions(),d.afterSetDimensions(),d.beforeDataLimits(),d.determineDataLimits(),d.afterDataLimits(),d.beforeBuildTicks(),s=d.buildTicks()||[],s=d.afterBuildTicks(s)||s,d.beforeTickToLabelConversion(),o=d.convertTicksToLabels(s)||d.ticks,d.afterTickToLabelConversion(),d.ticks=o,n=0,a=o.length;n<a;++n)r=o[n],(l=s[n])?l.label=r:s.push(l={label:r,major:!1});return d._ticks=s,d.beforeCalculateTickRotation(),d.calculateTickRotation(),d.afterCalculateTickRotation(),d.beforeFit(),d.fit(),d.afterFit(),d.afterUpdate(),d.minSize},afterUpdate:function(){ut.callback(this.options.afterUpdate,[this])},beforeSetDimensions:function(){ut.callback(this.options.beforeSetDimensions,[this])},setDimensions:function(){var t=this;t.isHorizontal()?(t.width=t.maxWidth,t.left=0,t.right=t.width):(t.height=t.maxHeight,t.top=0,t.bottom=t.height),t.paddingLeft=0,t.paddingTop=0,t.paddingRight=0,t.paddingBottom=0},afterSetDimensions:function(){ut.callback(this.options.afterSetDimensions,[this])},beforeDataLimits:function(){ut.callback(this.options.beforeDataLimits,[this])},determineDataLimits:ut.noop,afterDataLimits:function(){ut.callback(this.options.afterDataLimits,[this])},beforeBuildTicks:function(){ut.callback(this.options.beforeBuildTicks,[this])},buildTicks:ut.noop,afterBuildTicks:function(t){var e=this;return ut.isArray(t)&&t.length?ut.callback(e.options.afterBuildTicks,[e,t]):(e.ticks=ut.callback(e.options.afterBuildTicks,[e,e.ticks])||e.ticks,t)},beforeTickToLabelConversion:function(){ut.callback(this.options.beforeTickToLabelConversion,[this])},convertTicksToLabels:function(){var t=this.options.ticks;this.ticks=this.ticks.map(t.userCallback||t.callback,this)},afterTickToLabelConversion:function(){ut.callback(this.options.afterTickToLabelConversion,[this])},beforeCalculateTickRotation:function(){ut.callback(this.options.beforeCalculateTickRotation,[this])},calculateTickRotation:function(){var t=this,e=t.ctx,i=t.options.ticks,n=hi(t._ticks),a=ut.options._parseFont(i);e.font=a.string;var o=i.minRotation||0;if(n.length&&t.options.display&&t.isHorizontal())for(var r,s=ut.longestText(e,a.string,n,t.longestTextCache),l=s,d=t.getPixelForTick(1)-t.getPixelForTick(0)-6;l>d&&o<i.maxRotation;){var u=ut.toRadians(o);if(r=Math.cos(u),Math.sin(u)*s>t.maxHeight){o--;break}o++,l=r*s}t.labelRotation=o},afterCalculateTickRotation:function(){ut.callback(this.options.afterCalculateTickRotation,[this])},beforeFit:function(){ut.callback(this.options.beforeFit,[this])},fit:function(){var t=this,e=t.minSize={width:0,height:0},i=hi(t._ticks),n=t.options,a=n.ticks,o=n.scaleLabel,r=n.gridLines,s=t._isVisible(),l=n.position,d=t.isHorizontal(),u=ut.options._parseFont,h=u(a),c=n.gridLines.tickMarkLength;if(e.width=d?t.isFullWidth()?t.maxWidth-t.margins.left-t.margins.right:t.maxWidth:s&&r.drawTicks?c:0,e.height=d?s&&r.drawTicks?c:0:t.maxHeight,o.display&&s){var f=u(o),g=ut.options.toPadding(o.padding),p=f.lineHeight+g.height;d?e.height+=p:e.width+=p}if(a.display&&s){var m=ut.longestText(t.ctx,h.string,i,t.longestTextCache),v=ut.numberOfLabelLines(i),b=.5*h.size,x=t.options.ticks.padding;if(t._maxLabelLines=v,t.longestLabelWidth=m,d){var y=ut.toRadians(t.labelRotation),k=Math.cos(y),w=Math.sin(y)*m+h.lineHeight*v+b;e.height=Math.min(t.maxHeight,e.height+w+x),t.ctx.font=h.string;var M,_,C=ci(t.ctx,i[0],h.string),S=ci(t.ctx,i[i.length-1],h.string),P=t.getPixelForTick(0)-t.left,I=t.right-t.getPixelForTick(i.length-1);0!==t.labelRotation?(M="bottom"===l?k*C:k*b,_="bottom"===l?k*b:k*S):(M=C/2,_=S/2),t.paddingLeft=Math.max(M-P,0)+3,t.paddingRight=Math.max(_-I,0)+3}else a.mirror?m=0:m+=x+b,e.width=Math.min(t.maxWidth,e.width+m),t.paddingTop=h.size/2,t.paddingBottom=h.size/2}t.handleMargins(),t.width=e.width,t.height=e.height},handleMargins:function(){var t=this;t.margins&&(t.paddingLeft=Math.max(t.paddingLeft-t.margins.left,0),t.paddingTop=Math.max(t.paddingTop-t.margins.top,0),t.paddingRight=Math.max(t.paddingRight-t.margins.right,0),t.paddingBottom=Math.max(t.paddingBottom-t.margins.bottom,0))},afterFit:function(){ut.callback(this.options.afterFit,[this])},isHorizontal:function(){return"top"===this.options.position||"bottom"===this.options.position},isFullWidth:function(){return this.options.fullWidth},getRightValue:function(t){if(ut.isNullOrUndef(t))return NaN;if(("number"==typeof t||t instanceof Number)&&!isFinite(t))return NaN;if(t)if(this.isHorizontal()){if(void 0!==t.x)return this.getRightValue(t.x)}else if(void 0!==t.y)return this.getRightValue(t.y);return t},getLabelForIndex:ut.noop,getPixelForValue:ut.noop,getValueForPixel:ut.noop,getPixelForTick:function(t){var e=this,i=e.options.offset;if(e.isHorizontal()){var n=(e.width-(e.paddingLeft+e.paddingRight))/Math.max(e._ticks.length-(i?0:1),1),a=n*t+e.paddingLeft;i&&(a+=n/2);var o=e.left+a;return o+=e.isFullWidth()?e.margins.left:0}var r=e.height-(e.paddingTop+e.paddingBottom);return e.top+t*(r/(e._ticks.length-1))},getPixelForDecimal:function(t){var e=this;if(e.isHorizontal()){var i=(e.width-(e.paddingLeft+e.paddingRight))*t+e.paddingLeft,n=e.left+i;return n+=e.isFullWidth()?e.margins.left:0}return e.top+t*e.height},getBasePixel:function(){return this.getPixelForValue(this.getBaseValue())},getBaseValue:function(){var t=this.min,e=this.max;return this.beginAtZero?0:t<0&&e<0?e:t>0&&e>0?t:0},_autoSkip:function(t){var e,i,n=this,a=n.isHorizontal(),o=n.options.ticks.minor,r=t.length,s=!1,l=o.maxTicksLimit,d=n._tickSize()*(r-1),u=a?n.width-(n.paddingLeft+n.paddingRight):n.height-(n.paddingTop+n.PaddingBottom),h=[];for(d>u&&(s=1+Math.floor(d/u)),r>l&&(s=Math.max(s,1+Math.floor(r/l))),e=0;e<r;e++)i=t[e],s>1&&e%s>0&&delete i.label,h.push(i);return h},_tickSize:function(){var t=this,e=t.isHorizontal(),i=t.options.ticks.minor,n=ut.toRadians(t.labelRotation),a=Math.abs(Math.cos(n)),o=Math.abs(Math.sin(n)),r=i.autoSkipPadding||0,s=t.longestLabelWidth+r||0,l=ut.options._parseFont(i),d=t._maxLabelLines*l.lineHeight+r||0;return e?d*a>s*o?s/a:d/o:d*o<s*a?d/a:s/o},_isVisible:function(){var t,e,i,n=this.chart,a=this.options.display;if("auto"!==a)return!!a;for(t=0,e=n.data.datasets.length;t<e;++t)if(n.isDatasetVisible(t)&&((i=n.getDatasetMeta(t)).xAxisID===this.id||i.yAxisID===this.id))return!0;return!1},draw:function(t){var e=this,i=e.options;if(e._isVisible()){var n,a,o,r=e.chart,s=e.ctx,l=st.global.defaultFontColor,d=i.ticks.minor,u=i.ticks.major||d,h=i.gridLines,c=i.scaleLabel,f=i.position,g=0!==e.labelRotation,p=d.mirror,m=e.isHorizontal(),v=ut.options._parseFont,b=d.display&&d.autoSkip?e._autoSkip(e.getTicks()):e.getTicks(),x=di(d.fontColor,l),y=v(d),k=y.lineHeight,w=di(u.fontColor,l),M=v(u),_=d.padding,C=d.labelOffset,S=h.drawTicks?h.tickMarkLength:0,P=di(c.fontColor,l),I=v(c),A=ut.options.toPadding(c.padding),D=ut.toRadians(e.labelRotation),T=[],F=h.drawBorder?ui(h.lineWidth,0,0):0,L=ut._alignPixel;"top"===f?(n=L(r,e.bottom,F),a=e.bottom-S,o=n-F/2):"bottom"===f?(n=L(r,e.top,F),a=n+F/2,o=e.top+S):"left"===f?(n=L(r,e.right,F),a=e.right-S,o=n-F/2):(n=L(r,e.left,F),a=n+F/2,o=e.left+S);if(ut.each(b,function(n,s){if(!ut.isNullOrUndef(n.label)){var l,d,u,c,v,b,x,y,w,M,P,I,A,R,O,z,B=n.label;s===e.zeroLineIndex&&i.offset===h.offsetGridLines?(l=h.zeroLineWidth,d=h.zeroLineColor,u=h.zeroLineBorderDash||[],c=h.zeroLineBorderDashOffset||0):(l=ui(h.lineWidth,s),d=ui(h.color,s),u=h.borderDash||[],c=h.borderDashOffset||0);var N=ut.isArray(B)?B.length:1,W=function(t,e,i){var n=t.getPixelForTick(e);return i&&(1===t.getTicks().length?n-=t.isHorizontal()?Math.max(n-t.left,t.right-n):Math.max(n-t.top,t.bottom-n):n-=0===e?(t.getPixelForTick(1)-n)/2:(n-t.getPixelForTick(e-1))/2),n}(e,s,h.offsetGridLines);if(m){var V=S+_;W<e.left-1e-7&&(d="rgba(0,0,0,0)"),v=x=w=P=L(r,W,l),b=a,y=o,A=e.getPixelForTick(s)+C,"top"===f?(M=L(r,t.top,F)+F/2,I=t.bottom,O=((g?1:.5)-N)*k,z=g?"left":"center",R=e.bottom-V):(M=t.top,I=L(r,t.bottom,F)-F/2,O=(g?0:.5)*k,z=g?"right":"center",R=e.top+V)}else{var E=(p?0:S)+_;W<e.top-1e-7&&(d="rgba(0,0,0,0)"),v=a,x=o,b=y=M=I=L(r,W,l),R=e.getPixelForTick(s)+C,O=(1-N)*k/2,"left"===f?(w=L(r,t.left,F)+F/2,P=t.right,z=p?"left":"right",A=e.right-E):(w=t.left,P=L(r,t.right,F)-F/2,z=p?"right":"left",A=e.left+E)}T.push({tx1:v,ty1:b,tx2:x,ty2:y,x1:w,y1:M,x2:P,y2:I,labelX:A,labelY:R,glWidth:l,glColor:d,glBorderDash:u,glBorderDashOffset:c,rotation:-1*D,label:B,major:n.major,textOffset:O,textAlign:z})}}),ut.each(T,function(t){var e=t.glWidth,i=t.glColor;if(h.display&&e&&i&&(s.save(),s.lineWidth=e,s.strokeStyle=i,s.setLineDash&&(s.setLineDash(t.glBorderDash),s.lineDashOffset=t.glBorderDashOffset),s.beginPath(),h.drawTicks&&(s.moveTo(t.tx1,t.ty1),s.lineTo(t.tx2,t.ty2)),h.drawOnChartArea&&(s.moveTo(t.x1,t.y1),s.lineTo(t.x2,t.y2)),s.stroke(),s.restore()),d.display){s.save(),s.translate(t.labelX,t.labelY),s.rotate(t.rotation),s.font=t.major?M.string:y.string,s.fillStyle=t.major?w:x,s.textBaseline="middle",s.textAlign=t.textAlign;var n=t.label,a=t.textOffset;if(ut.isArray(n))for(var o=0;o<n.length;++o)s.fillText(""+n[o],0,a),a+=k;else s.fillText(n,0,a);s.restore()}}),c.display){var R,O,z=0,B=I.lineHeight/2;if(m)R=e.left+(e.right-e.left)/2,O="bottom"===f?e.bottom-B-A.bottom:e.top+B+A.top;else{var N="left"===f;R=N?e.left+B+A.top:e.right-B-A.top,O=e.top+(e.bottom-e.top)/2,z=N?-.5*Math.PI:.5*Math.PI}s.save(),s.translate(R,O),s.rotate(z),s.textAlign="center",s.textBaseline="middle",s.fillStyle=P,s.font=I.string,s.fillText(c.labelString,0,0),s.restore()}if(F){var W,V,E,H,j=F,q=ui(h.lineWidth,b.length-1,0);m?(W=L(r,e.left,j)-j/2,V=L(r,e.right,q)+q/2,E=H=n):(E=L(r,e.top,j)-j/2,H=L(r,e.bottom,q)+q/2,W=V=n),s.lineWidth=F,s.strokeStyle=ui(h.color,0),s.beginPath(),s.moveTo(W,E),s.lineTo(V,H),s.stroke()}}}}),gi=fi.extend({getLabels:function(){var t=this.chart.data;return this.options.labels||(this.isHorizontal()?t.xLabels:t.yLabels)||t.labels},determineDataLimits:function(){var t,e=this,i=e.getLabels();e.minIndex=0,e.maxIndex=i.length-1,void 0!==e.options.ticks.min&&(t=i.indexOf(e.options.ticks.min),e.minIndex=-1!==t?t:e.minIndex),void 0!==e.options.ticks.max&&(t=i.indexOf(e.options.ticks.max),e.maxIndex=-1!==t?t:e.maxIndex),e.min=i[e.minIndex],e.max=i[e.maxIndex]},buildTicks:function(){var t=this,e=t.getLabels();t.ticks=0===t.minIndex&&t.maxIndex===e.length-1?e:e.slice(t.minIndex,t.maxIndex+1)},getLabelForIndex:function(t,e){var i=this,n=i.chart;return n.getDatasetMeta(e).controller._getValueScaleId()===i.id?i.getRightValue(n.data.datasets[e].data[t]):i.ticks[t-i.minIndex]},getPixelForValue:function(t,e){var i,n=this,a=n.options.offset,o=Math.max(n.maxIndex+1-n.minIndex-(a?0:1),1);if(null!=t&&(i=n.isHorizontal()?t.x:t.y),void 0!==i||void 0!==t&&isNaN(e)){t=i||t;var r=n.getLabels().indexOf(t);e=-1!==r?r:e}if(n.isHorizontal()){var s=n.width/o,l=s*(e-n.minIndex);return a&&(l+=s/2),n.left+l}var d=n.height/o,u=d*(e-n.minIndex);return a&&(u+=d/2),n.top+u},getPixelForTick:function(t){return this.getPixelForValue(this.ticks[t],t+this.minIndex,null)},getValueForPixel:function(t){var e=this,i=e.options.offset,n=Math.max(e._ticks.length-(i?0:1),1),a=e.isHorizontal(),o=(a?e.width:e.height)/n;return t-=a?e.left:e.top,i&&(t-=o/2),(t<=0?0:Math.round(t/o))+e.minIndex},getBasePixel:function(){return this.bottom}}),pi={position:"bottom"};gi._defaults=pi;var mi=ut.noop,vi=ut.isNullOrUndef;var bi=fi.extend({getRightValue:function(t){return"string"==typeof t?+t:fi.prototype.getRightValue.call(this,t)},handleTickRangeOptions:function(){var t=this,e=t.options.ticks;if(e.beginAtZero){var i=ut.sign(t.min),n=ut.sign(t.max);i<0&&n<0?t.max=0:i>0&&n>0&&(t.min=0)}var a=void 0!==e.min||void 0!==e.suggestedMin,o=void 0!==e.max||void 0!==e.suggestedMax;void 0!==e.min?t.min=e.min:void 0!==e.suggestedMin&&(null===t.min?t.min=e.suggestedMin:t.min=Math.min(t.min,e.suggestedMin)),void 0!==e.max?t.max=e.max:void 0!==e.suggestedMax&&(null===t.max?t.max=e.suggestedMax:t.max=Math.max(t.max,e.suggestedMax)),a!==o&&t.min>=t.max&&(a?t.max=t.min+1:t.min=t.max-1),t.min===t.max&&(t.max++,e.beginAtZero||t.min--)},getTickLimit:function(){var t,e=this.options.ticks,i=e.stepSize,n=e.maxTicksLimit;return i?t=Math.ceil(this.max/i)-Math.floor(this.min/i)+1:(t=this._computeTickLimit(),n=n||11),n&&(t=Math.min(n,t)),t},_computeTickLimit:function(){return Number.POSITIVE_INFINITY},handleDirectionalChanges:mi,buildTicks:function(){var t=this,e=t.options.ticks,i=t.getTickLimit(),n={maxTicks:i=Math.max(2,i),min:e.min,max:e.max,precision:e.precision,stepSize:ut.valueOrDefault(e.fixedStepSize,e.stepSize)},a=t.ticks=function(t,e){var i,n,a,o,r=[],s=t.stepSize,l=s||1,d=t.maxTicks-1,u=t.min,h=t.max,c=t.precision,f=e.min,g=e.max,p=ut.niceNum((g-f)/d/l)*l;if(p<1e-14&&vi(u)&&vi(h))return[f,g];(o=Math.ceil(g/p)-Math.floor(f/p))>d&&(p=ut.niceNum(o*p/d/l)*l),s||vi(c)?i=Math.pow(10,ut._decimalPlaces(p)):(i=Math.pow(10,c),p=Math.ceil(p*i)/i),n=Math.floor(f/p)*p,a=Math.ceil(g/p)*p,s&&(!vi(u)&&ut.almostWhole(u/p,p/1e3)&&(n=u),!vi(h)&&ut.almostWhole(h/p,p/1e3)&&(a=h)),o=(a-n)/p,o=ut.almostEquals(o,Math.round(o),p/1e3)?Math.round(o):Math.ceil(o),n=Math.round(n*i)/i,a=Math.round(a*i)/i,r.push(vi(u)?n:u);for(var m=1;m<o;++m)r.push(Math.round((n+m*p)*i)/i);return r.push(vi(h)?a:h),r}(n,t);t.handleDirectionalChanges(),t.max=ut.max(a),t.min=ut.min(a),e.reverse?(a.reverse(),t.start=t.max,t.end=t.min):(t.start=t.min,t.end=t.max)},convertTicksToLabels:function(){var t=this;t.ticksAsNumbers=t.ticks.slice(),t.zeroLineIndex=t.ticks.indexOf(0),fi.prototype.convertTicksToLabels.call(t)}}),xi={position:"left",ticks:{callback:li.formatters.linear}},yi=bi.extend({determineDataLimits:function(){var t=this,e=t.options,i=t.chart,n=i.data.datasets,a=t.isHorizontal();function o(e){return a?e.xAxisID===t.id:e.yAxisID===t.id}t.min=null,t.max=null;var r=e.stacked;if(void 0===r&&ut.each(n,function(t,e){if(!r){var n=i.getDatasetMeta(e);i.isDatasetVisible(e)&&o(n)&&void 0!==n.stack&&(r=!0)}}),e.stacked||r){var s={};ut.each(n,function(n,a){var r=i.getDatasetMeta(a),l=[r.type,void 0===e.stacked&&void 0===r.stack?a:"",r.stack].join(".");void 0===s[l]&&(s[l]={positiveValues:[],negativeValues:[]});var d=s[l].positiveValues,u=s[l].negativeValues;i.isDatasetVisible(a)&&o(r)&&ut.each(n.data,function(i,n){var a=+t.getRightValue(i);isNaN(a)||r.data[n].hidden||(d[n]=d[n]||0,u[n]=u[n]||0,e.relativePoints?d[n]=100:a<0?u[n]+=a:d[n]+=a)})}),ut.each(s,function(e){var i=e.positiveValues.concat(e.negativeValues),n=ut.min(i),a=ut.max(i);t.min=null===t.min?n:Math.min(t.min,n),t.max=null===t.max?a:Math.max(t.max,a)})}else ut.each(n,function(e,n){var a=i.getDatasetMeta(n);i.isDatasetVisible(n)&&o(a)&&ut.each(e.data,function(e,i){var n=+t.getRightValue(e);isNaN(n)||a.data[i].hidden||(null===t.min?t.min=n:n<t.min&&(t.min=n),null===t.max?t.max=n:n>t.max&&(t.max=n))})});t.min=isFinite(t.min)&&!isNaN(t.min)?t.min:0,t.max=isFinite(t.max)&&!isNaN(t.max)?t.max:1,this.handleTickRangeOptions()},_computeTickLimit:function(){var t;return this.isHorizontal()?Math.ceil(this.width/40):(t=ut.options._parseFont(this.options.ticks),Math.ceil(this.height/t.lineHeight))},handleDirectionalChanges:function(){this.isHorizontal()||this.ticks.reverse()},getLabelForIndex:function(t,e){return+this.getRightValue(this.chart.data.datasets[e].data[t])},getPixelForValue:function(t){var e=this,i=e.start,n=+e.getRightValue(t),a=e.end-i;return e.isHorizontal()?e.left+e.width/a*(n-i):e.bottom-e.height/a*(n-i)},getValueForPixel:function(t){var e=this,i=e.isHorizontal(),n=i?e.width:e.height,a=(i?t-e.left:e.bottom-t)/n;return e.start+(e.end-e.start)*a},getPixelForTick:function(t){return this.getPixelForValue(this.ticksAsNumbers[t])}}),ki=xi;yi._defaults=ki;var wi=ut.valueOrDefault;var Mi={position:"left",ticks:{callback:li.formatters.logarithmic}};function _i(t,e){return ut.isFinite(t)&&t>=0?t:e}var Ci=fi.extend({determineDataLimits:function(){var t=this,e=t.options,i=t.chart,n=i.data.datasets,a=t.isHorizontal();function o(e){return a?e.xAxisID===t.id:e.yAxisID===t.id}t.min=null,t.max=null,t.minNotZero=null;var r=e.stacked;if(void 0===r&&ut.each(n,function(t,e){if(!r){var n=i.getDatasetMeta(e);i.isDatasetVisible(e)&&o(n)&&void 0!==n.stack&&(r=!0)}}),e.stacked||r){var s={};ut.each(n,function(n,a){var r=i.getDatasetMeta(a),l=[r.type,void 0===e.stacked&&void 0===r.stack?a:"",r.stack].join(".");i.isDatasetVisible(a)&&o(r)&&(void 0===s[l]&&(s[l]=[]),ut.each(n.data,function(e,i){var n=s[l],a=+t.getRightValue(e);isNaN(a)||r.data[i].hidden||a<0||(n[i]=n[i]||0,n[i]+=a)}))}),ut.each(s,function(e){if(e.length>0){var i=ut.min(e),n=ut.max(e);t.min=null===t.min?i:Math.min(t.min,i),t.max=null===t.max?n:Math.max(t.max,n)}})}else ut.each(n,function(e,n){var a=i.getDatasetMeta(n);i.isDatasetVisible(n)&&o(a)&&ut.each(e.data,function(e,i){var n=+t.getRightValue(e);isNaN(n)||a.data[i].hidden||n<0||(null===t.min?t.min=n:n<t.min&&(t.min=n),null===t.max?t.max=n:n>t.max&&(t.max=n),0!==n&&(null===t.minNotZero||n<t.minNotZero)&&(t.minNotZero=n))})});this.handleTickRangeOptions()},handleTickRangeOptions:function(){var t=this,e=t.options.ticks;t.min=_i(e.min,t.min),t.max=_i(e.max,t.max),t.min===t.max&&(0!==t.min&&null!==t.min?(t.min=Math.pow(10,Math.floor(ut.log10(t.min))-1),t.max=Math.pow(10,Math.floor(ut.log10(t.max))+1)):(t.min=1,t.max=10)),null===t.min&&(t.min=Math.pow(10,Math.floor(ut.log10(t.max))-1)),null===t.max&&(t.max=0!==t.min?Math.pow(10,Math.floor(ut.log10(t.min))+1):10),null===t.minNotZero&&(t.min>0?t.minNotZero=t.min:t.max<1?t.minNotZero=Math.pow(10,Math.floor(ut.log10(t.max))):t.minNotZero=1)},buildTicks:function(){var t=this,e=t.options.ticks,i=!t.isHorizontal(),n={min:_i(e.min),max:_i(e.max)},a=t.ticks=function(t,e){var i,n,a=[],o=wi(t.min,Math.pow(10,Math.floor(ut.log10(e.min)))),r=Math.floor(ut.log10(e.max)),s=Math.ceil(e.max/Math.pow(10,r));0===o?(i=Math.floor(ut.log10(e.minNotZero)),n=Math.floor(e.minNotZero/Math.pow(10,i)),a.push(o),o=n*Math.pow(10,i)):(i=Math.floor(ut.log10(o)),n=Math.floor(o/Math.pow(10,i)));var l=i<0?Math.pow(10,Math.abs(i)):1;do{a.push(o),10==++n&&(n=1,l=++i>=0?1:l),o=Math.round(n*Math.pow(10,i)*l)/l}while(i<r||i===r&&n<s);var d=wi(t.max,o);return a.push(d),a}(n,t);t.max=ut.max(a),t.min=ut.min(a),e.reverse?(i=!i,t.start=t.max,t.end=t.min):(t.start=t.min,t.end=t.max),i&&a.reverse()},convertTicksToLabels:function(){this.tickValues=this.ticks.slice(),fi.prototype.convertTicksToLabels.call(this)},getLabelForIndex:function(t,e){return+this.getRightValue(this.chart.data.datasets[e].data[t])},getPixelForTick:function(t){return this.getPixelForValue(this.tickValues[t])},_getFirstTickValue:function(t){var e=Math.floor(ut.log10(t));return Math.floor(t/Math.pow(10,e))*Math.pow(10,e)},getPixelForValue:function(t){var e,i,n,a,o,r=this,s=r.options.ticks,l=s.reverse,d=ut.log10,u=r._getFirstTickValue(r.minNotZero),h=0;return t=+r.getRightValue(t),l?(n=r.end,a=r.start,o=-1):(n=r.start,a=r.end,o=1),r.isHorizontal()?(e=r.width,i=l?r.right:r.left):(e=r.height,o*=-1,i=l?r.top:r.bottom),t!==n&&(0===n&&(e-=h=wi(s.fontSize,st.global.defaultFontSize),n=u),0!==t&&(h+=e/(d(a)-d(n))*(d(t)-d(n))),i+=o*h),i},getValueForPixel:function(t){var e,i,n,a,o=this,r=o.options.ticks,s=r.reverse,l=ut.log10,d=o._getFirstTickValue(o.minNotZero);if(s?(i=o.end,n=o.start):(i=o.start,n=o.end),o.isHorizontal()?(e=o.width,a=s?o.right-t:t-o.left):(e=o.height,a=s?t-o.top:o.bottom-t),a!==i){if(0===i){var u=wi(r.fontSize,st.global.defaultFontSize);a-=u,e-=u,i=d}a*=l(n)-l(i),a/=e,a=Math.pow(10,l(i)+a)}return a}}),Si=Mi;Ci._defaults=Si;var Pi=ut.valueOrDefault,Ii=ut.valueAtIndexOrDefault,Ai=ut.options.resolve,Di={display:!0,animate:!0,position:"chartArea",angleLines:{display:!0,color:"rgba(0, 0, 0, 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t=this;t.width=t.maxWidth,t.height=t.maxHeight,t.paddingTop=Fi(t.options)/2,t.xCenter=Math.floor(t.width/2),t.yCenter=Math.floor((t.height-t.paddingTop)/2),t.drawingArea=Math.min(t.height-t.paddingTop,t.width)/2},determineDataLimits:function(){var t=this,e=t.chart,i=Number.POSITIVE_INFINITY,n=Number.NEGATIVE_INFINITY;ut.each(e.data.datasets,function(a,o){if(e.isDatasetVisible(o)){var r=e.getDatasetMeta(o);ut.each(a.data,function(e,a){var o=+t.getRightValue(e);isNaN(o)||r.data[a].hidden||(i=Math.min(o,i),n=Math.max(o,n))})}}),t.min=i===Number.POSITIVE_INFINITY?0:i,t.max=n===Number.NEGATIVE_INFINITY?0:n,t.handleTickRangeOptions()},_computeTickLimit:function(){return Math.ceil(this.drawingArea/Fi(this.options))},convertTicksToLabels:function(){var t=this;bi.prototype.convertTicksToLabels.call(t),t.pointLabels=t.chart.data.labels.map(t.options.pointLabels.callback,t)},getLabelForIndex:function(t,e){return+this.getRightValue(this.chart.data.datasets[e].data[t])},fit:function(){var t=this.options;t.display&&t.pointLabels.display?function(t){var e,i,n,a=ut.options._parseFont(t.options.pointLabels),o={l:0,r:t.width,t:0,b:t.height-t.paddingTop},r={};t.ctx.font=a.string,t._pointLabelSizes=[];var s,l,d,u=Ti(t);for(e=0;e<u;e++){n=t.getPointPosition(e,t.drawingArea+5),s=t.ctx,l=a.lineHeight,d=t.pointLabels[e]||"",i=ut.isArray(d)?{w:ut.longestText(s,s.font,d),h:d.length*l}:{w:s.measureText(d).width,h:l},t._pointLabelSizes[e]=i;var h=t.getIndexAngle(e),c=ut.toDegrees(h)%360,f=Li(c,n.x,i.w,0,180),g=Li(c,n.y,i.h,90,270);f.start<o.l&&(o.l=f.start,r.l=h),f.end>o.r&&(o.r=f.end,r.r=h),g.start<o.t&&(o.t=g.start,r.t=h),g.end>o.b&&(o.b=g.end,r.b=h)}t.setReductions(t.drawingArea,o,r)}(this):this.setCenterPoint(0,0,0,0)},setReductions:function(t,e,i){var n=this,a=e.l/Math.sin(i.l),o=Math.max(e.r-n.width,0)/Math.sin(i.r),r=-e.t/Math.cos(i.t),s=-Math.max(e.b-(n.height-n.paddingTop),0)/Math.cos(i.b);a=Bi(a),o=Bi(o),r=Bi(r),s=Bi(s),n.drawingArea=Math.min(Math.floor(t-(a+o)/2),Math.floor(t-(r+s)/2)),n.setCenterPoint(a,o,r,s)},setCenterPoint:function(t,e,i,n){var a=this,o=a.width-e-a.drawingArea,r=t+a.drawingArea,s=i+a.drawingArea,l=a.height-a.paddingTop-n-a.drawingArea;a.xCenter=Math.floor((r+o)/2+a.left),a.yCenter=Math.floor((s+l)/2+a.top+a.paddingTop)},getIndexAngle:function(t){return t*(2*Math.PI/Ti(this))+(this.chart.options&&this.chart.options.startAngle?this.chart.options.startAngle:0)*Math.PI*2/360},getDistanceFromCenterForValue:function(t){var e=this;if(null===t)return 0;var i=e.drawingArea/(e.max-e.min);return e.options.ticks.reverse?(e.max-t)*i:(t-e.min)*i},getPointPosition:function(t,e){var i=this.getIndexAngle(t)-Math.PI/2;return{x:Math.cos(i)*e+this.xCenter,y:Math.sin(i)*e+this.yCenter}},getPointPositionForValue:function(t,e){return this.getPointPosition(t,this.getDistanceFromCenterForValue(e))},getBasePosition:function(){var t=this.min,e=this.max;return this.getPointPositionForValue(0,this.beginAtZero?0:t<0&&e<0?e:t>0&&e>0?t:0)},draw:function(){var t=this,e=t.options,i=e.gridLines,n=e.ticks;if(e.display){var a=t.ctx,o=this.getIndexAngle(0),r=ut.options._parseFont(n);(e.angleLines.display||e.pointLabels.display)&&function(t){var e=t.ctx,i=t.options,n=i.angleLines,a=i.gridLines,o=i.pointLabels,r=Pi(n.lineWidth,a.lineWidth),s=Pi(n.color,a.color),l=Fi(i);e.save(),e.lineWidth=r,e.strokeStyle=s,e.setLineDash&&(e.setLineDash(Ai([n.borderDash,a.borderDash,[]])),e.lineDashOffset=Ai([n.borderDashOffset,a.borderDashOffset,0]));var d=t.getDistanceFromCenterForValue(i.ticks.reverse?t.min:t.max),u=ut.options._parseFont(o);e.font=u.string,e.textBaseline="middle";for(var h=Ti(t)-1;h>=0;h--){if(n.display&&r&&s){var c=t.getPointPosition(h,d);e.beginPath(),e.moveTo(t.xCenter,t.yCenter),e.lineTo(c.x,c.y),e.stroke()}if(o.display){var f=0===h?l/2:0,g=t.getPointPosition(h,d+f+5),p=Ii(o.fontColor,h,st.global.defaultFontColor);e.fillStyle=p;var m=t.getIndexAngle(h),v=ut.toDegrees(m);e.textAlign=Ri(v),zi(v,t._pointLabelSizes[h],g),Oi(e,t.pointLabels[h]||"",g,u.lineHeight)}}e.restore()}(t),ut.each(t.ticks,function(e,s){if(s>0||n.reverse){var l=t.getDistanceFromCenterForValue(t.ticksAsNumbers[s]);if(i.display&&0!==s&&function(t,e,i,n){var a,o=t.ctx,r=e.circular,s=Ti(t),l=Ii(e.color,n-1),d=Ii(e.lineWidth,n-1);if((r||s)&&l&&d){if(o.save(),o.strokeStyle=l,o.lineWidth=d,o.setLineDash&&(o.setLineDash(e.borderDash||[]),o.lineDashOffset=e.borderDashOffset||0),o.beginPath(),r)o.arc(t.xCenter,t.yCenter,i,0,2*Math.PI);else{a=t.getPointPosition(0,i),o.moveTo(a.x,a.y);for(var u=1;u<s;u++)a=t.getPointPosition(u,i),o.lineTo(a.x,a.y)}o.closePath(),o.stroke(),o.restore()}}(t,i,l,s),n.display){var d=Pi(n.fontColor,st.global.defaultFontColor);if(a.font=r.string,a.save(),a.translate(t.xCenter,t.yCenter),a.rotate(o),n.showLabelBackdrop){var u=a.measureText(e).width;a.fillStyle=n.backdropColor,a.fillRect(-u/2-n.backdropPaddingX,-l-r.size/2-n.backdropPaddingY,u+2*n.backdropPaddingX,r.size+2*n.backdropPaddingY)}a.textAlign="center",a.textBaseline="middle",a.fillStyle=d,a.fillText(e,0,-l),a.restore()}}})}}}),Wi=Di;Ni._defaults=Wi;var Vi=ut.valueOrDefault,Ei=Number.MIN_SAFE_INTEGER||-9007199254740991,Hi=Number.MAX_SAFE_INTEGER||9007199254740991,ji={millisecond:{common:!0,size:1,steps:[1,2,5,10,20,50,100,250,500]},second:{common:!0,size:1e3,steps:[1,2,5,10,15,30]},minute:{common:!0,size:6e4,steps:[1,2,5,10,15,30]},hour:{common:!0,size:36e5,steps:[1,2,3,6,12]},day:{common:!0,size:864e5,steps:[1,2,5]},week:{common:!1,size:6048e5,steps:[1,2,3,4]},month:{common:!0,size:2628e6,steps:[1,2,3]},quarter:{common:!1,size:7884e6,steps:[1,2,3,4]},year:{common:!0,size:3154e7}},qi=Object.keys(ji);function Yi(t,e){return t-e}function Ui(t){var e,i,n,a={},o=[];for(e=0,i=t.length;e<i;++e)a[n=t[e]]||(a[n]=!0,o.push(n));return o}function Xi(t,e,i,n){var a=function(t,e,i){for(var n,a,o,r=0,s=t.length-1;r>=0&&r<=s;){if(a=t[(n=r+s>>1)-1]||null,o=t[n],!a)return{lo:null,hi:o};if(o[e]<i)r=n+1;else{if(!(a[e]>i))return{lo:a,hi:o};s=n-1}}return{lo:o,hi:null}}(t,e,i),o=a.lo?a.hi?a.lo:t[t.length-2]:t[0],r=a.lo?a.hi?a.hi:t[t.length-1]:t[1],s=r[e]-o[e],l=s?(i-o[e])/s:0,d=(r[n]-o[n])*l;return o[n]+d}function Ki(t,e){var i=t._adapter,n=t.options.time,a=n.parser,o=a||n.format,r=e;return"function"==typeof a&&(r=a(r)),ut.isFinite(r)||(r="string"==typeof o?i.parse(r,o):i.parse(r)),null!==r?+r:(a||"function"!=typeof o||(r=o(e),ut.isFinite(r)||(r=i.parse(r))),r)}function Gi(t,e){if(ut.isNullOrUndef(e))return null;var i=t.options.time,n=Ki(t,t.getRightValue(e));return null===n?n:(i.round&&(n=+t._adapter.startOf(n,i.round)),n)}function Zi(t){for(var e=qi.indexOf(t)+1,i=qi.length;e<i;++e)if(ji[qi[e]].common)return qi[e]}function $i(t,e,i,n){var a,o=t._adapter,r=t.options,s=r.time,l=s.unit||function(t,e,i,n){var a,o,r,s=qi.length;for(a=qi.indexOf(t);a<s-1;++a)if(r=(o=ji[qi[a]]).steps?o.steps[o.steps.length-1]:Hi,o.common&&Math.ceil((i-e)/(r*o.size))<=n)return qi[a];return qi[s-1]}(s.minUnit,e,i,n),d=Zi(l),u=Vi(s.stepSize,s.unitStepSize),h="week"===l&&s.isoWeekday,c=r.ticks.major.enabled,f=ji[l],g=e,p=i,m=[];for(u||(u=function(t,e,i,n){var a,o,r,s=e-t,l=ji[i],d=l.size,u=l.steps;if(!u)return Math.ceil(s/(n*d));for(a=0,o=u.length;a<o&&(r=u[a],!(Math.ceil(s/(d*r))<=n));++a);return r}(e,i,l,n)),h&&(g=+o.startOf(g,"isoWeek",h),p=+o.startOf(p,"isoWeek",h)),g=+o.startOf(g,h?"day":l),(p=+o.startOf(p,h?"day":l))<i&&(p=+o.add(p,1,l)),a=g,c&&d&&!h&&!s.round&&(a=+o.startOf(a,d),a=+o.add(a,~~((g-a)/(f.size*u))*u,l));a<p;a=+o.add(a,u,l))m.push(+a);return m.push(+a),m}var Ji=fi.extend({initialize:function(){this.mergeTicksOptions(),fi.prototype.initialize.call(this)},update:function(){var t=this.options,e=t.time||(t.time={}),i=this._adapter=new si._date(t.adapters.date);return e.format&&console.warn("options.time.format is deprecated and replaced by options.time.parser."),ut.mergeIf(e.displayFormats,i.formats()),fi.prototype.update.apply(this,arguments)},getRightValue:function(t){return t&&void 0!==t.t&&(t=t.t),fi.prototype.getRightValue.call(this,t)},determineDataLimits:function(){var t,e,i,n,a,o,r=this,s=r.chart,l=r._adapter,d=r.options.time,u=d.unit||"day",h=Hi,c=Ei,f=[],g=[],p=[],m=s.data.labels||[];for(t=0,i=m.length;t<i;++t)p.push(Gi(r,m[t]));for(t=0,i=(s.data.datasets||[]).length;t<i;++t)if(s.isDatasetVisible(t))if(a=s.data.datasets[t].data,ut.isObject(a[0]))for(g[t]=[],e=0,n=a.length;e<n;++e)o=Gi(r,a[e]),f.push(o),g[t][e]=o;else{for(e=0,n=p.length;e<n;++e)f.push(p[e]);g[t]=p.slice(0)}else 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projects / thirdparty / Chart.js.git / commitdiff
