From: etimberg Date: Thu, 31 Dec 2015 23:41:21 +0000 (-0500) Subject: clean up helpers file before starting work X-Git-Tag: v2.0.0~85^2~1 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a9a003c4c4d23a3267f7e6c5548359900c28c0f3;p=thirdparty%2FChart.js.git clean up helpers file before starting work --- diff --git a/src/core/core.helpers.js b/src/core/core.helpers.js index 19c242b84..8607dd00d 100644 --- a/src/core/core.helpers.js +++ b/src/core/core.helpers.js @@ -10,143 +10,86 @@ var helpers = Chart.helpers = {}; //-- Basic js utility methods - var each = helpers.each = function(loopable, callback, self, reverse) { - var additionalArgs = Array.prototype.slice.call(arguments, 3); - // Check to see if null or undefined firstly. - if (loopable) { - if (loopable.length === +loopable.length) { - var i; - if (reverse) { - for (i = loopable.length - 1; i >= 0; i--) { - callback.apply(self, [loopable[i], i].concat(additionalArgs)); - } - } else { - for (i = 0; i < loopable.length; i++) { - callback.apply(self, [loopable[i], i].concat(additionalArgs)); - } + helpers.each = function(loopable, callback, self, reverse) { + var additionalArgs = Array.prototype.slice.call(arguments, 3); + // Check to see if null or undefined firstly. + if (loopable) { + if (loopable.length === +loopable.length) { + var i; + if (reverse) { + for (i = loopable.length - 1; i >= 0; i--) { + callback.apply(self, [loopable[i], i].concat(additionalArgs)); } } else { - for (var item in loopable) { - callback.apply(self, [loopable[item], item].concat(additionalArgs)); + for (i = 0; i < loopable.length; i++) { + callback.apply(self, [loopable[i], i].concat(additionalArgs)); } } + } else { + for (var item in loopable) { + callback.apply(self, [loopable[item], item].concat(additionalArgs)); + } } - }, - clone = helpers.clone = function(obj) { - var objClone = {}; - each(obj, function(value, key) { - if (obj.hasOwnProperty(key)) { - if (helpers.isArray(value)) { - objClone[key] = value.slice(0); - } else if (typeof value === 'object' && value !== null) { - objClone[key] = clone(value); - } else { - objClone[key] = value; - } + } + }; + helpers.clone = function(obj) { + var objClone = {}; + helpers.each(obj, function(value, key) { + if (obj.hasOwnProperty(key)) { + if (helpers.isArray(value)) { + objClone[key] = value.slice(0); + } else if (typeof value === 'object' && value !== null) { + objClone[key] = helpers.clone(value); + } else { + objClone[key] = value; + } + } + }); + return objClone; + }; + helpers.extend = function(base) { + helpers.each(Array.prototype.slice.call(arguments, 1), function(extensionObject) { + helpers.each(extensionObject, function(value, key) { + if (extensionObject.hasOwnProperty(key)) { + base[key] = value; } }); - return objClone; - }, - extend = helpers.extend = function(base) { - each(Array.prototype.slice.call(arguments, 1), function(extensionObject) { - each(extensionObject, function(value, key) { - if (extensionObject.hasOwnProperty(key)) { - base[key] = value; - } - }); - }); - return base; - }, - // Need a special merge function to chart configs since they are now grouped - configMerge = helpers.configMerge = function(_base) { - var base = clone(_base); - helpers.each(Array.prototype.slice.call(arguments, 1), function(extension) { - helpers.each(extension, function(value, key) { - if (extension.hasOwnProperty(key)) { - if (key === 'scales') { - // Scale config merging is complex. Add out own function here for that - base[key] = helpers.scaleMerge(base.hasOwnProperty(key) ? base[key] : {}, value); - - } else if (key === 'scale') { - // Used in polar area & radar charts since there is only one scale - base[key] = helpers.configMerge(base.hasOwnProperty(key) ? base[key] : {}, Chart.scaleService.getScaleDefaults(value.type), value); - } else if (base.hasOwnProperty(key) && helpers.isArray(base[key]) && helpers.isArray(value)) { - // In this case we have an array of objects replacing another array. Rather than doing a strict replace, - // merge. This allows easy scale option merging - var baseArray = base[key]; - - helpers.each(value, function(valueObj, index) { - - if (index < baseArray.length) { - if (typeof baseArray[index] == 'object' && baseArray[index] !== null && typeof valueObj == 'object' && valueObj !== null) { - // Two objects are coming together. Do a merge of them. - baseArray[index] = helpers.configMerge(baseArray[index], valueObj); - } else { - // Just overwrite in this case since there is nothing to merge - baseArray[index] = valueObj; - } + }); + return base; + }; + // Need a special merge function to chart configs since they are now grouped + helpers.configMerge = function(_base) { + var base = helpers.clone(_base); + helpers.each(Array.prototype.slice.call(arguments, 1), function(extension) { + helpers.each(extension, function(value, key) { + if (extension.hasOwnProperty(key)) { + if (key === 'scales') { + // Scale config merging is complex. Add out own function here for that + base[key] = helpers.scaleMerge(base.hasOwnProperty(key) ? base[key] : {}, value); + + } else if (key === 'scale') { + // Used in polar area & radar charts since there is only one scale + base[key] = helpers.configMerge(base.hasOwnProperty(key) ? base[key] : {}, Chart.scaleService.getScaleDefaults(value.type), value); + } else if (base.hasOwnProperty(key) && helpers.isArray(base[key]) && helpers.isArray(value)) { + // In this case we have an array of objects replacing another array. Rather than doing a strict replace, + // merge. This allows easy scale option merging + var baseArray = base[key]; + + helpers.each(value, function(valueObj, index) { + + if (index < baseArray.length) { + if (typeof baseArray[index] == 'object' && baseArray[index] !== null && typeof valueObj == 'object' && valueObj !== null) { + // Two objects are coming together. Do a merge of them. + baseArray[index] = helpers.configMerge(baseArray[index], valueObj); } else { - baseArray.push(valueObj); // nothing to merge + // Just overwrite in this case since there is nothing to merge + baseArray[index] = valueObj; } - }); - - } else if (base.hasOwnProperty(key) && typeof base[key] == "object" && base[key] !== null && typeof value == "object") { - // If we are overwriting an object with an object, do a merge of the properties. - base[key] = helpers.configMerge(base[key], value); - - } else { - // can just overwrite the value in this case - base[key] = value; - } - } - }); - }); - - return base; - }, - extendDeep = helpers.extendDeep = function(_base) { - return _extendDeep.apply(this, arguments); - - function _extendDeep(dst) { - helpers.each(arguments, function(obj) { - if (obj !== dst) { - helpers.each(obj, function(value, key) { - if (dst[key] && dst[key].constructor && dst[key].constructor === Object) { - _extendDeep(dst[key], value); } else { - dst[key] = value; + baseArray.push(valueObj); // nothing to merge } }); - } - }); - return dst; - } - }, - scaleMerge = helpers.scaleMerge = function(_base, extension) { - var base = clone(_base); - helpers.each(extension, function(value, key) { - if (extension.hasOwnProperty(key)) { - if (key === 'xAxes' || key === 'yAxes') { - // These properties are arrays of items - if (base.hasOwnProperty(key)) { - helpers.each(value, function(valueObj, index) { - if (index >= base[key].length || !base[key][index].type) { - base[key].push(helpers.configMerge(valueObj.type ? Chart.scaleService.getScaleDefaults(valueObj.type) : {}, valueObj)); - } else if (valueObj.type !== base[key][index].type) { - // Type changed. Bring in the new defaults before we bring in valueObj so that valueObj can override the correct scale defaults - base[key][index] = helpers.configMerge(base[key][index], valueObj.type ? Chart.scaleService.getScaleDefaults(valueObj.type) : {}, valueObj); - } else { - // Type is the same - base[key][index] = helpers.configMerge(base[key][index], valueObj); - } - }); - } else { - base[key] = []; - helpers.each(value, function(valueObj) { - base[key].push(helpers.configMerge(valueObj.type ? Chart.scaleService.getScaleDefaults(valueObj.type) : {}, valueObj)); - }); - } } else if (base.hasOwnProperty(key) && typeof base[key] == "object" && base[key] !== null && typeof value == "object") { // If we are overwriting an object with an object, do a merge of the properties. base[key] = helpers.configMerge(base[key], value); @@ -157,701 +100,740 @@ } } }); - - return base; - }, - getValueAtIndexOrDefault = helpers.getValueAtIndexOrDefault = function(value, index, defaultValue) { - if (value === undefined || value === null) { - return defaultValue; - } - - if (helpers.isArray(value)) { - return index < value.length ? value[index] : defaultValue; - } - - return value; - }, - getValueOrDefault = helpers.getValueOrDefault = function(value, defaultValue) { - return value === undefined ? defaultValue : value; - }, - indexOf = helpers.indexOf = function(arrayToSearch, item) { - if (Array.prototype.indexOf) { - return arrayToSearch.indexOf(item); - } else { - for (var i = 0; i < arrayToSearch.length; i++) { - if (arrayToSearch[i] === item) return i; - } - return -1; - } - }, - where = helpers.where = function(collection, filterCallback) { - var filtered = []; - - helpers.each(collection, function(item) { - if (filterCallback(item)) { - filtered.push(item); + }); + + return base; + }; + helpers.extendDeep = function(_base) { + return _extendDeep.apply(this, arguments); + + function _extendDeep(dst) { + helpers.each(arguments, function(obj) { + if (obj !== dst) { + helpers.each(obj, function(value, key) { + if (dst[key] && dst[key].constructor && dst[key].constructor === Object) { + _extendDeep(dst[key], value); + } else { + dst[key] = value; + } + }); } }); + return dst; + } + }; + helpers.scaleMerge = function(_base, extension) { + var base = helpers.clone(_base); + + helpers.each(extension, function(value, key) { + if (extension.hasOwnProperty(key)) { + if (key === 'xAxes' || key === 'yAxes') { + // These properties are arrays of items + if (base.hasOwnProperty(key)) { + helpers.each(value, function(valueObj, index) { + if (index >= base[key].length || !base[key][index].type) { + base[key].push(helpers.configMerge(valueObj.type ? Chart.scaleService.getScaleDefaults(valueObj.type) : {}, valueObj)); + } else if (valueObj.type !== base[key][index].type) { + // Type changed. Bring in the new defaults before we bring in valueObj so that valueObj can override the correct scale defaults + base[key][index] = helpers.configMerge(base[key][index], valueObj.type ? Chart.scaleService.getScaleDefaults(valueObj.type) : {}, valueObj); + } else { + // Type is the same + base[key][index] = helpers.configMerge(base[key][index], valueObj); + } + }); + } else { + base[key] = []; + helpers.each(value, function(valueObj) { + base[key].push(helpers.configMerge(valueObj.type ? Chart.scaleService.getScaleDefaults(valueObj.type) : {}, valueObj)); + }); + } + } else if (base.hasOwnProperty(key) && typeof base[key] == "object" && base[key] !== null && typeof value == "object") { + // If we are overwriting an object with an object, do a merge of the properties. + base[key] = helpers.configMerge(base[key], value); - return filtered; - }, - findNextWhere = helpers.findNextWhere = function(arrayToSearch, filterCallback, startIndex) { - // Default to start of the array - if (startIndex === undefined || startIndex === null) { - startIndex = -1; - } - for (var i = startIndex + 1; i < arrayToSearch.length; i++) { - var currentItem = arrayToSearch[i]; - if (filterCallback(currentItem)) { - return currentItem; - } - } - }, - findPreviousWhere = helpers.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) { - // Default to end of the array - if (startIndex === undefined || startIndex === null) { - startIndex = arrayToSearch.length; - } - for (var i = startIndex - 1; i >= 0; i--) { - var currentItem = arrayToSearch[i]; - if (filterCallback(currentItem)) { - return currentItem; + } else { + // can just overwrite the value in this case + base[key] = value; } } - }, - inherits = helpers.inherits = function(extensions) { - //Basic javascript inheritance based on the model created in Backbone.js - var parent = this; - var ChartElement = (extensions && extensions.hasOwnProperty("constructor")) ? extensions.constructor : function() { - return parent.apply(this, arguments); - }; - - var Surrogate = function() { - this.constructor = ChartElement; - }; - Surrogate.prototype = parent.prototype; - ChartElement.prototype = new Surrogate(); - - ChartElement.extend = inherits; + }); - if (extensions) extend(ChartElement.prototype, extensions); + return base; + }; + helpers.getValueAtIndexOrDefault = function(value, index, defaultValue) { + if (value === undefined || value === null) { + return defaultValue; + } - ChartElement.__super__ = parent.prototype; + if (helpers.isArray(value)) { + return index < value.length ? value[index] : defaultValue; + } - return ChartElement; - }, - noop = helpers.noop = function() {}, - uid = helpers.uid = (function() { - var id = 0; - return function() { - return "chart-" + id++; - }; - })(), - warn = helpers.warn = function(str) { - //Method for warning of errors - if (console && typeof console.warn === "function") { - console.warn(str); + return value; + }; + helpers.getValueOrDefault = function(value, defaultValue) { + return value === undefined ? defaultValue : value; + }; + helpers.indexOf = function(arrayToSearch, item) { + if (Array.prototype.indexOf) { + return arrayToSearch.indexOf(item); + } else { + for (var i = 0; i < arrayToSearch.length; i++) { + if (arrayToSearch[i] === item) return i; } - }, - //-- Math methods - isNumber = helpers.isNumber = function(n) { - return !isNaN(parseFloat(n)) && isFinite(n); - }, - max = helpers.max = function(array) { - return Math.max.apply(Math, array); - }, - min = helpers.min = function(array) { - return Math.min.apply(Math, array); - }, - sign = helpers.sign = function(x) { - if (Math.sign) { - return Math.sign(x); - } else { - x = +x; // convert to a number - if (x === 0 || isNaN(x)) { - return x; - } - return x > 0 ? 1 : -1; + return -1; + } + }; + helpers.where = function(collection, filterCallback) { + var filtered = []; + + helpers.each(collection, function(item) { + if (filterCallback(item)) { + filtered.push(item); } - }, - log10 = helpers.log10 = function(x) { - if (Math.log10) { - return Math.log10(x); - } else { - return Math.log(x) / Math.LN10; + }); + + return filtered; + }; + helpers.findNextWhere = function(arrayToSearch, filterCallback, startIndex) { + // Default to start of the array + if (startIndex === undefined || startIndex === null) { + startIndex = -1; + } + for (var i = startIndex + 1; i < arrayToSearch.length; i++) { + var currentItem = arrayToSearch[i]; + if (filterCallback(currentItem)) { + return currentItem; } - }, - getDecimalPlaces = helpers.getDecimalPlaces = function(num) { - if (num % 1 !== 0 && isNumber(num)) { - var s = num.toString(); - if (s.indexOf("e-") < 0) { - // no exponent, e.g. 0.01 - return s.split(".")[1].length; - } else if (s.indexOf(".") < 0) { - // no decimal point, e.g. 1e-9 - return parseInt(s.split("e-")[1]); - } else { - // exponent and decimal point, e.g. 1.23e-9 - var parts = s.split(".")[1].split("e-"); - return parts[0].length + parseInt(parts[1]); - } - } else { - return 0; + } + }; + helpers.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) { + // Default to end of the array + if (startIndex === undefined || startIndex === null) { + startIndex = arrayToSearch.length; + } + for (var i = startIndex - 1; i >= 0; i--) { + var currentItem = arrayToSearch[i]; + if (filterCallback(currentItem)) { + return currentItem; } - }, - toRadians = helpers.toRadians = function(degrees) { - return degrees * (Math.PI / 180); - }, - toDegrees = helpers.toDegrees = function(radians) { - return radians * (180 / Math.PI); - }, - // Gets the angle from vertical upright to the point about a centre. - getAngleFromPoint = helpers.getAngleFromPoint = function(centrePoint, anglePoint) { - var distanceFromXCenter = anglePoint.x - centrePoint.x, - distanceFromYCenter = anglePoint.y - centrePoint.y, - radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter); + } + }; + helpers.inherits = function(extensions) { + //Basic javascript inheritance based on the model created in Backbone.js + var parent = this; + var ChartElement = (extensions && extensions.hasOwnProperty("constructor")) ? extensions.constructor : function() { + return parent.apply(this, arguments); + }; + + var Surrogate = function() { + this.constructor = ChartElement; + }; + Surrogate.prototype = parent.prototype; + ChartElement.prototype = new Surrogate(); + + ChartElement.extend = helpers.inherits; + + if (extensions) { + helpers.extend(ChartElement.prototype, extensions); + } - var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter); + ChartElement.__super__ = parent.prototype; - 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 ChartElement; + }; + helpers.noop = function() {}; + helpers.uid = (function() { + var id = 0; + return function() { + return "chart-" + id++; + }; + })(); + helpers.warn = function(str) { + //Method for warning of errors + if (console && typeof console.warn === "function") { + console.warn(str); + } + }; + //-- Math methods + helpers.isNumber = function(n) { + return !isNaN(parseFloat(n)) && isFinite(n); + }; + helpers.max = function(array) { + return Math.max.apply(Math, array); + }; + helpers.min = function(array) { + return Math.min.apply(Math, array); + }; + helpers.sign = function(x) { + if (Math.sign) { + return Math.sign(x); + } else { + x = +x; // convert to a number + if (x === 0 || isNaN(x)) { + return x; } + return x > 0 ? 1 : -1; + } + }; + helpers.log10 = function(x) { + if (Math.log10) { + return Math.log10(x); + } else { + return Math.log(x) / Math.LN10; + } + }; + helpers.toRadians = function(degrees) { + return degrees * (Math.PI / 180); + }; + helpers.toDegrees = function(radians) { + return radians * (180 / Math.PI); + }; + // Gets the angle from vertical upright to the point about a centre. + helpers.getAngleFromPoint = function(centrePoint, anglePoint) { + var distanceFromXCenter = anglePoint.x - centrePoint.x, + distanceFromYCenter = anglePoint.y - centrePoint.y, + 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 - }; - }, - aliasPixel = helpers.aliasPixel = function(pixelWidth) { - return (pixelWidth % 2 === 0) ? 0 : 0.5; - }, - splineCurve = helpers.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 + return { + angle: angle, + distance: radialDistanceFromCenter + }; + }; + helpers.aliasPixel = function(pixelWidth) { + return (pixelWidth % 2 === 0) ? 0 : 0.5; + }; + helpers.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 + // This function must also respect "skipped" points - var previous = firstPoint.skip ? middlePoint : firstPoint, - current = middlePoint, - next = afterPoint.skip ? middlePoint : afterPoint; + var previous = firstPoint.skip ? middlePoint : firstPoint, + current = middlePoint, + 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 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); + 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; + // 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; + 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) - } - }; - }, - nextItem = helpers.nextItem = function(collection, index, loop) { - if (loop) { - return index >= collection.length - 1 ? collection[0] : collection[index + 1]; + 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.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]; - }, - previousItem = helpers.previousItem = function(collection, index, loop) { - if (loop) { - return index <= 0 ? collection[collection.length - 1] : collection[index - 1]; + return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1]; + }; + helpers.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.niceNum = function(range, round) { + var exponent = Math.floor(helpers.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; } - return index <= 0 ? collection[0] : collection[index - 1]; - }, - // Implementation of the nice number algorithm used in determining where axis labels will go - niceNum = helpers.niceNum = function(range, round) { - var exponent = Math.floor(helpers.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 { - if (fraction <= 1.0) { - niceFraction = 1; - } else if (fraction <= 2) { - niceFraction = 2; - } else if (fraction <= 5) { - niceFraction = 5; - } else { - niceFraction = 10; - } + niceFraction = 10; } + } - return niceFraction * Math.pow(10, exponent); + return niceFraction * Math.pow(10, exponent); + }; + //Easing functions adapted from Robert Penner's easing equations + //http://www.robertpenner.com/easing/ + var easingEffects = helpers.easingEffects = { + linear: function(t) { + return t; }, - //Easing functions adapted from Robert Penner's easing equations - //http://www.robertpenner.com/easing/ - easingEffects = helpers.easingEffects = { - linear: function(t) { - return t; - }, - easeInQuad: function(t) { - return t * t; - }, - easeOutQuad: function(t) { - return -1 * t * (t - 2); - }, - easeInOutQuad: function(t) { - if ((t /= 1 / 2) < 1) { - return 1 / 2 * t * t; - } - return -1 / 2 * ((--t) * (t - 2) - 1); - }, - easeInCubic: function(t) { - return t * t * t; - }, - easeOutCubic: function(t) { - return 1 * ((t = t / 1 - 1) * t * t + 1); - }, - easeInOutCubic: function(t) { - if ((t /= 1 / 2) < 1) { - return 1 / 2 * t * t * t; - } - return 1 / 2 * ((t -= 2) * t * t + 2); - }, - easeInQuart: function(t) { - return t * t * t * t; - }, - easeOutQuart: function(t) { - return -1 * ((t = t / 1 - 1) * t * t * t - 1); - }, - easeInOutQuart: function(t) { - if ((t /= 1 / 2) < 1) { - return 1 / 2 * t * t * t * t; - } - return -1 / 2 * ((t -= 2) * t * t * t - 2); - }, - easeInQuint: function(t) { - return 1 * (t /= 1) * t * t * t * t; - }, - easeOutQuint: function(t) { - return 1 * ((t = t / 1 - 1) * t * t * t * t + 1); - }, - easeInOutQuint: function(t) { - if ((t /= 1 / 2) < 1) { - return 1 / 2 * t * t * t * t * t; - } - return 1 / 2 * ((t -= 2) * t * t * t * t + 2); - }, - easeInSine: function(t) { - return -1 * Math.cos(t / 1 * (Math.PI / 2)) + 1; - }, - easeOutSine: function(t) { - return 1 * Math.sin(t / 1 * (Math.PI / 2)); - }, - easeInOutSine: function(t) { - return -1 / 2 * (Math.cos(Math.PI * t / 1) - 1); - }, - easeInExpo: function(t) { - return (t === 0) ? 1 : 1 * Math.pow(2, 10 * (t / 1 - 1)); - }, - easeOutExpo: function(t) { - return (t === 1) ? 1 : 1 * (-Math.pow(2, -10 * t / 1) + 1); - }, - easeInOutExpo: function(t) { - if (t === 0) { - return 0; - } - if (t === 1) { - return 1; - } - if ((t /= 1 / 2) < 1) { - return 1 / 2 * Math.pow(2, 10 * (t - 1)); - } - return 1 / 2 * (-Math.pow(2, -10 * --t) + 2); - }, - easeInCirc: function(t) { - if (t >= 1) { - return t; - } - return -1 * (Math.sqrt(1 - (t /= 1) * t) - 1); - }, - easeOutCirc: function(t) { - return 1 * Math.sqrt(1 - (t = t / 1 - 1) * t); - }, - easeInOutCirc: function(t) { - if ((t /= 1 / 2) < 1) { - return -1 / 2 * (Math.sqrt(1 - t * t) - 1); - } - return 1 / 2 * (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) == 1) { - return 1; - } - if (!p) { - p = 1 * 0.3; - } - if (a < Math.abs(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 * 1 - 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) == 1) { - return 1; - } - if (!p) { - p = 1 * 0.3; - } - if (a < Math.abs(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 * 1 - 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 /= 1 / 2) == 2) { - return 1; - } - if (!p) { - p = 1 * (0.3 * 1.5); - } - if (a < Math.abs(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 * 1 - s) * (2 * Math.PI) / p)); - } - return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) * 0.5 + 1; - }, - easeInBack: function(t) { - var s = 1.70158; - return 1 * (t /= 1) * t * ((s + 1) * t - s); - }, - easeOutBack: function(t) { - var s = 1.70158; - return 1 * ((t = t / 1 - 1) * t * ((s + 1) * t + s) + 1); - }, - easeInOutBack: function(t) { - var s = 1.70158; - if ((t /= 1 / 2) < 1) { - return 1 / 2 * (t * t * (((s *= (1.525)) + 1) * t - s)); - } - return 1 / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2); - }, - easeInBounce: function(t) { - return 1 - easingEffects.easeOutBounce(1 - t); - }, - easeOutBounce: function(t) { - if ((t /= 1) < (1 / 2.75)) { - return 1 * (7.5625 * t * t); - } else if (t < (2 / 2.75)) { - return 1 * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75); - } else if (t < (2.5 / 2.75)) { - return 1 * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375); - } else { - return 1 * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375); - } - }, - easeInOutBounce: function(t) { - if (t < 1 / 2) { - return easingEffects.easeInBounce(t * 2) * 0.5; - } - return easingEffects.easeOutBounce(t * 2 - 1) * 0.5 + 1 * 0.5; - } + easeInQuad: function(t) { + return t * t; }, - //Request animation polyfill - http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/ - requestAnimFrame = helpers.requestAnimFrame = (function() { - return window.requestAnimationFrame || - window.webkitRequestAnimationFrame || - window.mozRequestAnimationFrame || - window.oRequestAnimationFrame || - window.msRequestAnimationFrame || - function(callback) { - return window.setTimeout(callback, 1000 / 60); - }; - })(), - cancelAnimFrame = helpers.cancelAnimFrame = (function() { - return window.cancelAnimationFrame || - window.webkitCancelAnimationFrame || - window.mozCancelAnimationFrame || - window.oCancelAnimationFrame || - window.msCancelAnimationFrame || - function(callback) { - return window.clearTimeout(callback, 1000 / 60); - }; - })(), - //-- DOM methods - getRelativePosition = helpers.getRelativePosition = function(evt, chart) { - var mouseX, mouseY; - var e = evt.originalEvent || evt, - canvas = evt.currentTarget || evt.srcElement, - boundingRect = canvas.getBoundingClientRect(); - - if (e.touches && e.touches.length > 0) { - mouseX = e.touches[0].clientX; - mouseY = e.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 - // http://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/ - - // 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) / (boundingRect.right - boundingRect.left) * canvas.width / chart.currentDevicePixelRatio); - mouseY = Math.round((mouseY - boundingRect.top) / (boundingRect.bottom - boundingRect.top) * canvas.height / chart.currentDevicePixelRatio); - - return { - x: mouseX, - y: mouseY - }; - + easeOutQuad: function(t) { + return -1 * t * (t - 2); }, - addEvent = helpers.addEvent = function(node, eventType, method) { - if (node.addEventListener) { - node.addEventListener(eventType, method); - } else if (node.attachEvent) { - node.attachEvent("on" + eventType, method); - } else { - node["on" + eventType] = method; + easeInOutQuad: function(t) { + if ((t /= 1 / 2) < 1) { + return 1 / 2 * t * t; } + return -1 / 2 * ((--t) * (t - 2) - 1); }, - removeEvent = helpers.removeEvent = function(node, eventType, handler) { - if (node.removeEventListener) { - node.removeEventListener(eventType, handler, false); - } else if (node.detachEvent) { - node.detachEvent("on" + eventType, handler); - } else { - node["on" + eventType] = noop; + easeInCubic: function(t) { + return t * t * t; + }, + easeOutCubic: function(t) { + return 1 * ((t = t / 1 - 1) * t * t + 1); + }, + easeInOutCubic: function(t) { + if ((t /= 1 / 2) < 1) { + return 1 / 2 * t * t * t; } + return 1 / 2 * ((t -= 2) * t * t + 2); }, - bindEvents = helpers.bindEvents = function(chartInstance, arrayOfEvents, handler) { - // Create the events object if it's not already present - if (!chartInstance.events) chartInstance.events = {}; - - each(arrayOfEvents, function(eventName) { - chartInstance.events[eventName] = function() { - handler.apply(chartInstance, arguments); - }; - addEvent(chartInstance.chart.canvas, eventName, chartInstance.events[eventName]); - }); + easeInQuart: function(t) { + return t * t * t * t; }, - unbindEvents = helpers.unbindEvents = function(chartInstance, arrayOfEvents) { - each(arrayOfEvents, function(handler, eventName) { - removeEvent(chartInstance.chart.canvas, eventName, handler); - }); + easeOutQuart: function(t) { + return -1 * ((t = t / 1 - 1) * t * t * t - 1); }, - getConstraintWidth = helpers.getConstraintWidth = function(domNode) { // returns Number or undefined if no constraint - var constrainedWidth; - var constrainedWNode = document.defaultView.getComputedStyle(domNode)['max-width']; - var constrainedWContainer = document.defaultView.getComputedStyle(domNode.parentNode)['max-width']; - var hasCWNode = constrainedWNode !== null && constrainedWNode !== "none"; - var hasCWContainer = constrainedWContainer !== null && constrainedWContainer !== "none"; - - if (hasCWNode || hasCWContainer) { - constrainedWidth = Math.min((hasCWNode ? parseInt(constrainedWNode, 10) : Number.POSITIVE_INFINITY), (hasCWContainer ? parseInt(constrainedWContainer, 10) : Number.POSITIVE_INFINITY)); + easeInOutQuart: function(t) { + if ((t /= 1 / 2) < 1) { + return 1 / 2 * t * t * t * t; } - return constrainedWidth; + return -1 / 2 * ((t -= 2) * t * t * t - 2); }, - getConstraintHeight = helpers.getConstraintHeight = function(domNode) { // returns Number or undefined if no constraint - - var constrainedHeight; - var constrainedHNode = document.defaultView.getComputedStyle(domNode)['max-height']; - var constrainedHContainer = document.defaultView.getComputedStyle(domNode.parentNode)['max-height']; - var hasCHNode = constrainedHNode !== null && constrainedHNode !== "none"; - var hasCHContainer = constrainedHContainer !== null && constrainedHContainer !== "none"; - - if (constrainedHNode || constrainedHContainer) { - constrainedHeight = Math.min((hasCHNode ? parseInt(constrainedHNode, 10) : Number.POSITIVE_INFINITY), (hasCHContainer ? parseInt(constrainedHContainer, 10) : Number.POSITIVE_INFINITY)); - } - return constrainedHeight; + easeInQuint: function(t) { + return 1 * (t /= 1) * t * t * t * t; }, - getMaximumWidth = helpers.getMaximumWidth = function(domNode) { - var container = domNode.parentNode; - var padding = parseInt(getStyle(container, 'padding-left')) + parseInt(getStyle(container, 'padding-right')); - - var w = container.clientWidth - padding; - var cw = getConstraintWidth(domNode); - if (cw !== undefined) { - w = Math.min(w, cw); - } - - return w; + easeOutQuint: function(t) { + return 1 * ((t = t / 1 - 1) * t * t * t * t + 1); }, - getMaximumHeight = helpers.getMaximumHeight = function(domNode) { - var container = domNode.parentNode; - var padding = parseInt(getStyle(container, 'padding-top')) + parseInt(getStyle(container, 'padding-bottom')); - - var h = container.clientHeight - padding; - var ch = getConstraintHeight(domNode); - if (ch !== undefined) { - h = Math.min(h, ch); + easeInOutQuint: function(t) { + if ((t /= 1 / 2) < 1) { + return 1 / 2 * t * t * t * t * t; } - - return h; + return 1 / 2 * ((t -= 2) * t * t * t * t + 2); }, - getStyle = helpers.getStyle = function(el, property) { - return el.currentStyle ? - el.currentStyle[property] : - document.defaultView.getComputedStyle(el, null).getPropertyValue(property); + easeInSine: function(t) { + return -1 * Math.cos(t / 1 * (Math.PI / 2)) + 1; }, - getMaximumSize = helpers.getMaximumSize = helpers.getMaximumWidth, // legacy support - retinaScale = helpers.retinaScale = function(chart) { - var ctx = chart.ctx; - var width = chart.canvas.width; - var height = chart.canvas.height; - var pixelRatio = chart.currentDevicePixelRatio = window.devicePixelRatio || 1; - - if (pixelRatio !== 1) { - ctx.canvas.height = height * pixelRatio; - ctx.canvas.width = width * pixelRatio; - ctx.scale(pixelRatio, pixelRatio); - - ctx.canvas.style.width = width + 'px'; - ctx.canvas.style.height = height + 'px'; - - // Store the device pixel ratio so that we can go backwards in `destroy`. - // The devicePixelRatio changes with zoom, so there are no guarantees that it is the same - // when destroy is called - chart.originalDevicePixelRatio = chart.originalDevicePixelRatio || pixelRatio; - } + easeOutSine: function(t) { + return 1 * Math.sin(t / 1 * (Math.PI / 2)); }, - //-- Canvas methods - clear = helpers.clear = function(chart) { - chart.ctx.clearRect(0, 0, chart.width, chart.height); + easeInOutSine: function(t) { + return -1 / 2 * (Math.cos(Math.PI * t / 1) - 1); }, - fontString = helpers.fontString = function(pixelSize, fontStyle, fontFamily) { - return fontStyle + " " + pixelSize + "px " + fontFamily; + easeInExpo: function(t) { + return (t === 0) ? 1 : 1 * Math.pow(2, 10 * (t / 1 - 1)); }, - longestText = helpers.longestText = function(ctx, font, arrayOfStrings) { - ctx.font = font; - var longest = 0; - each(arrayOfStrings, function(string) { - var textWidth = ctx.measureText(string).width; - longest = (textWidth > longest) ? textWidth : longest; - }); - return longest; + easeOutExpo: function(t) { + return (t === 1) ? 1 : 1 * (-Math.pow(2, -10 * t / 1) + 1); + }, + easeInOutExpo: function(t) { + if (t === 0) { + return 0; + } + if (t === 1) { + return 1; + } + if ((t /= 1 / 2) < 1) { + return 1 / 2 * Math.pow(2, 10 * (t - 1)); + } + return 1 / 2 * (-Math.pow(2, -10 * --t) + 2); + }, + easeInCirc: function(t) { + if (t >= 1) { + return t; + } + return -1 * (Math.sqrt(1 - (t /= 1) * t) - 1); + }, + easeOutCirc: function(t) { + return 1 * Math.sqrt(1 - (t = t / 1 - 1) * t); }, - drawRoundedRectangle = helpers.drawRoundedRectangle = function(ctx, x, y, width, height, radius) { - ctx.beginPath(); - ctx.moveTo(x + radius, y); - ctx.lineTo(x + width - radius, y); - ctx.quadraticCurveTo(x + width, y, x + width, y + radius); - ctx.lineTo(x + width, y + height - radius); - ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height); - ctx.lineTo(x + radius, y + height); - ctx.quadraticCurveTo(x, y + height, x, y + height - radius); - ctx.lineTo(x, y + radius); - ctx.quadraticCurveTo(x, y, x + radius, y); - ctx.closePath(); + easeInOutCirc: function(t) { + if ((t /= 1 / 2) < 1) { + return -1 / 2 * (Math.sqrt(1 - t * t) - 1); + } + return 1 / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1); }, - color = helpers.color = function(color) { - if (!root.Color) { - console.log('Color.js not found!'); - return color; + easeInElastic: function(t) { + var s = 1.70158; + var p = 0; + var a = 1; + if (t === 0) { + return 0; + } + if ((t /= 1) == 1) { + return 1; } - return root.Color(color); + if (!p) { + p = 1 * 0.3; + } + if (a < Math.abs(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 * 1 - s) * (2 * Math.PI) / p)); }, - addResizeListener = helpers.addResizeListener = function(node, callback) { - // Hide an iframe before the node - var hiddenIframe = document.createElement('iframe'); - var hiddenIframeClass = 'chartjs-hidden-iframe'; - - if (hiddenIframe.classlist) { - // can use classlist - hiddenIframe.classlist.add(hiddenIframeClass); + easeOutElastic: function(t) { + var s = 1.70158; + var p = 0; + var a = 1; + if (t === 0) { + return 0; + } + if ((t /= 1) == 1) { + return 1; + } + if (!p) { + p = 1 * 0.3; + } + if (a < Math.abs(1)) { + a = 1; + s = p / 4; } else { - hiddenIframe.setAttribute('class', hiddenIframeClass); - } - - // Set the style - hiddenIframe.style.width = '100%'; - hiddenIframe.style.display = 'block'; - hiddenIframe.style.border = 0; - hiddenIframe.style.height = 0; - hiddenIframe.style.margin = 0; - hiddenIframe.style.position = 'absolute'; - hiddenIframe.style.left = 0; - hiddenIframe.style.right = 0; - hiddenIframe.style.top = 0; - hiddenIframe.style.bottom = 0; - - // Insert the iframe so that contentWindow is available - node.insertBefore(hiddenIframe, node.firstChild); - - var timer = 0; - (hiddenIframe.contentWindow || hiddenIframe).onresize = function() { - if (callback) { - callback(); - } - }; + s = p / (2 * Math.PI) * Math.asin(1 / a); + } + return a * Math.pow(2, -10 * t) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) + 1; }, - removeResizeListener = helpers.removeResizeListener = function(node) { - var hiddenIframe = node.querySelector('.chartjs-hidden-iframe'); - - // Remove the resize detect iframe - if (hiddenIframe) { - hiddenIframe.parentNode.removeChild(hiddenIframe); + easeInOutElastic: function(t) { + var s = 1.70158; + var p = 0; + var a = 1; + if (t === 0) { + return 0; + } + if ((t /= 1 / 2) == 2) { + return 1; + } + if (!p) { + p = 1 * (0.3 * 1.5); } + if (a < Math.abs(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 * 1 - s) * (2 * Math.PI) / p)); + } + return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) * 0.5 + 1; + }, + easeInBack: function(t) { + var s = 1.70158; + return 1 * (t /= 1) * t * ((s + 1) * t - s); + }, + easeOutBack: function(t) { + var s = 1.70158; + return 1 * ((t = t / 1 - 1) * t * ((s + 1) * t + s) + 1); }, - isArray = helpers.isArray = function(obj) { - if (!Array.isArray) { - return Object.prototype.toString.call(arg) === '[object Array]'; + easeInOutBack: function(t) { + var s = 1.70158; + if ((t /= 1 / 2) < 1) { + return 1 / 2 * (t * t * (((s *= (1.525)) + 1) * t - s)); + } + return 1 / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2); + }, + easeInBounce: function(t) { + return 1 - easingEffects.easeOutBounce(1 - t); + }, + easeOutBounce: function(t) { + if ((t /= 1) < (1 / 2.75)) { + return 1 * (7.5625 * t * t); + } else if (t < (2 / 2.75)) { + return 1 * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75); + } else if (t < (2.5 / 2.75)) { + return 1 * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375); + } else { + return 1 * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375); } - return Array.isArray(obj); }, - isDatasetVisible = helpers.isDatasetVisible = function(dataset) { - return !dataset.hidden; + easeInOutBounce: function(t) { + if (t < 1 / 2) { + return easingEffects.easeInBounce(t * 2) * 0.5; + } + return easingEffects.easeOutBounce(t * 2 - 1) * 0.5 + 1 * 0.5; + } + }; + //Request animation polyfill - http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/ + helpers.requestAnimFrame = (function() { + return window.requestAnimationFrame || + window.webkitRequestAnimationFrame || + window.mozRequestAnimationFrame || + window.oRequestAnimationFrame || + window.msRequestAnimationFrame || + function(callback) { + return window.setTimeout(callback, 1000 / 60); + }; + })(); + helpers.cancelAnimFrame = (function() { + return window.cancelAnimationFrame || + window.webkitCancelAnimationFrame || + window.mozCancelAnimationFrame || + window.oCancelAnimationFrame || + window.msCancelAnimationFrame || + function(callback) { + return window.clearTimeout(callback, 1000 / 60); + }; + })(); + //-- DOM methods + helpers.getRelativePosition = function(evt, chart) { + var mouseX, mouseY; + var e = evt.originalEvent || evt, + canvas = evt.currentTarget || evt.srcElement, + boundingRect = canvas.getBoundingClientRect(); + + if (e.touches && e.touches.length > 0) { + mouseX = e.touches[0].clientX; + mouseY = e.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 + // http://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/ + + // 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) / (boundingRect.right - boundingRect.left) * canvas.width / chart.currentDevicePixelRatio); + mouseY = Math.round((mouseY - boundingRect.top) / (boundingRect.bottom - boundingRect.top) * canvas.height / chart.currentDevicePixelRatio); + + return { + x: mouseX, + y: mouseY + }; + + }; + helpers.addEvent = function(node, eventType, method) { + if (node.addEventListener) { + node.addEventListener(eventType, method); + } else if (node.attachEvent) { + node.attachEvent("on" + eventType, method); + } else { + node["on" + eventType] = method; + } + }; + helpers.removeEvent = function(node, eventType, handler) { + if (node.removeEventListener) { + node.removeEventListener(eventType, handler, false); + } else if (node.detachEvent) { + node.detachEvent("on" + eventType, handler); + } else { + node["on" + eventType] = helpers.noop; + } + }; + helpers.bindEvents = function(chartInstance, arrayOfEvents, handler) { + // Create the events object if it's not already present + if (!chartInstance.events) chartInstance.events = {}; + + helpers.each(arrayOfEvents, function(eventName) { + chartInstance.events[eventName] = function() { + handler.apply(chartInstance, arguments); + }; + helpers.addEvent(chartInstance.chart.canvas, eventName, chartInstance.events[eventName]); + }); + }; + helpers.unbindEvents = function(chartInstance, arrayOfEvents) { + helpers.each(arrayOfEvents, function(handler, eventName) { + helpers.removeEvent(chartInstance.chart.canvas, eventName, handler); + }); + }; + helpers.getConstraintWidth = function(domNode) { // returns Number or undefined if no constraint + var constrainedWidth; + var constrainedWNode = document.defaultView.getComputedStyle(domNode)['max-width']; + var constrainedWContainer = document.defaultView.getComputedStyle(domNode.parentNode)['max-width']; + var hasCWNode = constrainedWNode !== null && constrainedWNode !== "none"; + var hasCWContainer = constrainedWContainer !== null && constrainedWContainer !== "none"; + + if (hasCWNode || hasCWContainer) { + constrainedWidth = Math.min((hasCWNode ? parseInt(constrainedWNode, 10) : Number.POSITIVE_INFINITY), (hasCWContainer ? parseInt(constrainedWContainer, 10) : Number.POSITIVE_INFINITY)); + } + return constrainedWidth; + }; + // returns Number or undefined if no constraint + helpers.getConstraintHeight = function(domNode) { + var constrainedHeight; + var constrainedHNode = document.defaultView.getComputedStyle(domNode)['max-height']; + var constrainedHContainer = document.defaultView.getComputedStyle(domNode.parentNode)['max-height']; + var hasCHNode = constrainedHNode !== null && constrainedHNode !== "none"; + var hasCHContainer = constrainedHContainer !== null && constrainedHContainer !== "none"; + + if (constrainedHNode || constrainedHContainer) { + constrainedHeight = Math.min((hasCHNode ? parseInt(constrainedHNode, 10) : Number.POSITIVE_INFINITY), (hasCHContainer ? parseInt(constrainedHContainer, 10) : Number.POSITIVE_INFINITY)); + } + return constrainedHeight; + }; + helpers.getMaximumWidth = function(domNode) { + var container = domNode.parentNode; + var padding = parseInt(helpers.getStyle(container, 'padding-left')) + parseInt(helpers.getStyle(container, 'padding-right')); + + var w = container.clientWidth - padding; + var cw = helpers.getConstraintWidth(domNode); + if (cw !== undefined) { + w = Math.min(w, cw); + } + + return w; + }; + helpers.getMaximumHeight = function(domNode) { + var container = domNode.parentNode; + var padding = parseInt(helpers.getStyle(container, 'padding-top')) + parseInt(helpers.getStyle(container, 'padding-bottom')); + + var h = container.clientHeight - padding; + var ch = helpers.getConstraintHeight(domNode); + if (ch !== undefined) { + h = Math.min(h, ch); + } + + return h; + }; + helpers.getStyle = function(el, property) { + return el.currentStyle ? + el.currentStyle[property] : + document.defaultView.getComputedStyle(el, null).getPropertyValue(property); + }; + helpers.retinaScale = function(chart) { + var ctx = chart.ctx; + var width = chart.canvas.width; + var height = chart.canvas.height; + var pixelRatio = chart.currentDevicePixelRatio = window.devicePixelRatio || 1; + + if (pixelRatio !== 1) { + ctx.canvas.height = height * pixelRatio; + ctx.canvas.width = width * pixelRatio; + ctx.scale(pixelRatio, pixelRatio); + + ctx.canvas.style.width = width + 'px'; + ctx.canvas.style.height = height + 'px'; + + // Store the device pixel ratio so that we can go backwards in `destroy`. + // The devicePixelRatio changes with zoom, so there are no guarantees that it is the same + // when destroy is called + chart.originalDevicePixelRatio = chart.originalDevicePixelRatio || pixelRatio; + } + }; + //-- Canvas methods + helpers.clear = function(chart) { + chart.ctx.clearRect(0, 0, chart.width, chart.height); + }; + helpers.fontString = function(pixelSize, fontStyle, fontFamily) { + return fontStyle + " " + pixelSize + "px " + fontFamily; + }; + helpers.longestText = function(ctx, font, arrayOfStrings) { + ctx.font = font; + var longest = 0; + helpers.each(arrayOfStrings, function(string) { + var textWidth = ctx.measureText(string).width; + longest = (textWidth > longest) ? textWidth : longest; + }); + return longest; + }; + helpers.drawRoundedRectangle = function(ctx, x, y, width, height, radius) { + ctx.beginPath(); + ctx.moveTo(x + radius, y); + ctx.lineTo(x + width - radius, y); + ctx.quadraticCurveTo(x + width, y, x + width, y + radius); + ctx.lineTo(x + width, y + height - radius); + ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height); + ctx.lineTo(x + radius, y + height); + ctx.quadraticCurveTo(x, y + height, x, y + height - radius); + ctx.lineTo(x, y + radius); + ctx.quadraticCurveTo(x, y, x + radius, y); + ctx.closePath(); + }; + helpers.color = function(color) { + if (!root.Color) { + console.log('Color.js not found!'); + return color; + } + return root.Color(color); + }; + helpers.addResizeListener = function(node, callback) { + // Hide an iframe before the node + var hiddenIframe = document.createElement('iframe'); + var hiddenIframeClass = 'chartjs-hidden-iframe'; + + if (hiddenIframe.classlist) { + // can use classlist + hiddenIframe.classlist.add(hiddenIframeClass); + } else { + hiddenIframe.setAttribute('class', hiddenIframeClass); + } + + // Set the style + hiddenIframe.style.width = '100%'; + hiddenIframe.style.display = 'block'; + hiddenIframe.style.border = 0; + hiddenIframe.style.height = 0; + hiddenIframe.style.margin = 0; + hiddenIframe.style.position = 'absolute'; + hiddenIframe.style.left = 0; + hiddenIframe.style.right = 0; + hiddenIframe.style.top = 0; + hiddenIframe.style.bottom = 0; + + // Insert the iframe so that contentWindow is available + node.insertBefore(hiddenIframe, node.firstChild); + + var timer = 0; + (hiddenIframe.contentWindow || hiddenIframe).onresize = function() { + if (callback) { + callback(); + } }; + }; + helpers.removeResizeListener = function(node) { + var hiddenIframe = node.querySelector('.chartjs-hidden-iframe'); + // Remove the resize detect iframe + if (hiddenIframe) { + hiddenIframe.parentNode.removeChild(hiddenIframe); + } + }; + helpers.isArray = function(obj) { + if (!Array.isArray) { + return Object.prototype.toString.call(arg) === '[object Array]'; + } + return Array.isArray(obj); + }; + helpers.isDatasetVisible = function(dataset) { + return !dataset.hidden; + }; helpers.callCallback = function(fn, args, _tArg) { if (fn && typeof fn.call === 'function') { fn.apply(_tArg, args); } - } + }; }).call(this);