* Chart.js
* http://chartjs.org/
*
- * Copyright 2013 Nick Downie
+ * Copyright 2014 Nick Downie
* Released under the MIT license
* https://github.com/nnnick/Chart.js/blob/master/LICENSE.md
*/
-//Define the global Chart Variable as a class.
-window.Chart = function(context){
- var chart = this;
-
-
- //Easing functions adapted from Robert Penner's easing equations
- //http://www.robertpenner.com/easing/
-
- var animationOptions = {
- 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*.3;
- if (a < Math.abs(1)) { a=1; var s=p/4; }
- else var 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*.3;
- if (a < Math.abs(1)) { a=1; var s=p/4; }
- else var 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*(.3*1.5);
- if (a < Math.abs(1)) { a=1; var s=p/4; }
- else var s = p/(2*Math.PI) * Math.asin (1/a);
- if (t < 1) return -.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 )*.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 - animationOptions.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 + .75);
- } else if (t < (2.5/2.75)) {
- return 1*(7.5625*(t-=(2.25/2.75))*t + .9375);
- } else {
- return 1*(7.5625*(t-=(2.625/2.75))*t + .984375);
- }
- },
- easeInOutBounce: function (t) {
- if (t < 1/2) return animationOptions.easeInBounce (t*2) * .5;
- return animationOptions.easeOutBounce (t*2-1) * .5 + 1*.5;
- }
- };
+(function(){
- //Variables global to the chart
- var width = context.canvas.width;
- var height = context.canvas.height;
+ "use strict";
+ //Declare root variable - window in the browser, global on the server
+ var root = this,
+ previous = root.Chart;
- //High pixel density displays - multiply the size of the canvas height/width by the device pixel ratio, then scale.
- if (window.devicePixelRatio) {
- context.canvas.style.width = width + "px";
- context.canvas.style.height = height + "px";
- context.canvas.height = height * window.devicePixelRatio;
- context.canvas.width = width * window.devicePixelRatio;
- context.scale(window.devicePixelRatio, window.devicePixelRatio);
- }
+ //Occupy the global variable of Chart, and create a simple base class
+ var Chart = function(context){
+ var chart = this;
+ this.canvas = context.canvas;
- this.PolarArea = function(data,options){
-
- chart.PolarArea.defaults = {
- scaleOverlay : true,
- scaleOverride : false,
- scaleSteps : null,
- scaleStepWidth : null,
- scaleStartValue : null,
- scaleShowLine : true,
- scaleLineColor : "rgba(0,0,0,.1)",
- scaleLineWidth : 1,
- scaleShowLabels : true,
- scaleLabel : "<%=value%>",
- scaleFontFamily : "'Arial'",
- scaleFontSize : 12,
- scaleFontStyle : "normal",
- scaleFontColor : "#666",
- scaleShowLabelBackdrop : true,
- scaleBackdropColor : "rgba(255,255,255,0.75)",
- scaleBackdropPaddingY : 2,
- scaleBackdropPaddingX : 2,
- segmentShowStroke : true,
- segmentStrokeColor : "#fff",
- segmentStrokeWidth : 2,
- animation : true,
- animationSteps : 100,
- animationEasing : "easeOutBounce",
- animateRotate : true,
- animateScale : false,
- onAnimationComplete : null
- };
-
- var config = (options)? mergeChartConfig(chart.PolarArea.defaults,options) : chart.PolarArea.defaults;
-
- return new PolarArea(data,config,context);
- };
+ this.ctx = context;
- this.Radar = function(data,options){
-
- chart.Radar.defaults = {
- scaleOverlay : false,
- scaleOverride : false,
- scaleSteps : null,
- scaleStepWidth : null,
- scaleStartValue : null,
- scaleShowLine : true,
- scaleLineColor : "rgba(0,0,0,.1)",
- scaleLineWidth : 1,
- scaleShowLabels : false,
- scaleLabel : "<%=value%>",
- scaleFontFamily : "'Arial'",
- scaleFontSize : 12,
- scaleFontStyle : "normal",
- scaleFontColor : "#666",
- scaleShowLabelBackdrop : true,
- scaleBackdropColor : "rgba(255,255,255,0.75)",
- scaleBackdropPaddingY : 2,
- scaleBackdropPaddingX : 2,
- angleShowLineOut : true,
- angleLineColor : "rgba(0,0,0,.1)",
- angleLineWidth : 1,
- pointLabelFontFamily : "'Arial'",
- pointLabelFontStyle : "normal",
- pointLabelFontSize : 12,
- pointLabelFontColor : "#666",
- pointDot : true,
- pointDotRadius : 3,
- pointDotStrokeWidth : 1,
- datasetStroke : true,
- datasetStrokeWidth : 2,
- datasetFill : true,
- animation : true,
- animationSteps : 60,
- animationEasing : "easeOutQuart",
- onAnimationComplete : null
- };
-
- var config = (options)? mergeChartConfig(chart.Radar.defaults,options) : chart.Radar.defaults;
+ //Variables global to the chart
+ var width = this.width = context.canvas.width;
+ var height = this.height = context.canvas.height;
+ this.aspectRatio = this.width / this.height;
+ //High pixel density displays - multiply the size of the canvas height/width by the device pixel ratio, then scale.
+ helpers.retinaScale(this);
- return new Radar(data,config,context);
- };
-
- this.Pie = function(data,options){
- chart.Pie.defaults = {
- segmentShowStroke : true,
- segmentStrokeColor : "#fff",
- segmentStrokeWidth : 2,
- animation : true,
- animationSteps : 100,
- animationEasing : "easeOutBounce",
- animateRotate : true,
- animateScale : false,
- onAnimationComplete : null
- };
-
- var config = (options)? mergeChartConfig(chart.Pie.defaults,options) : chart.Pie.defaults;
-
- return new Pie(data,config,context);
- };
-
- this.Doughnut = function(data,options){
-
- chart.Doughnut.defaults = {
- segmentShowStroke : true,
- segmentStrokeColor : "#fff",
- segmentStrokeWidth : 2,
- percentageInnerCutout : 50,
- animation : true,
- animationSteps : 100,
- animationEasing : "easeOutBounce",
- animateRotate : true,
- animateScale : false,
- onAnimationComplete : null
- };
-
- var config = (options)? mergeChartConfig(chart.Doughnut.defaults,options) : chart.Doughnut.defaults;
-
- return new Doughnut(data,config,context);
-
+ return this;
};
+ //Globally expose the defaults to allow for user updating/changing
+ Chart.defaults = {
+ global: {
+ // Boolean - Whether to animate the chart
+ animation: true,
- this.Line = function(data,options){
-
- chart.Line.defaults = {
- scaleOverlay : false,
- scaleOverride : false,
- scaleSteps : null,
- scaleStepWidth : null,
- scaleStartValue : null,
- scaleLineColor : "rgba(0,0,0,.1)",
- scaleLineWidth : 1,
- scaleShowLabels : true,
- scaleLabel : "<%=value%>",
- scaleFontFamily : "'Arial'",
- scaleFontSize : 12,
- scaleFontStyle : "normal",
- scaleFontColor : "#666",
- scaleShowGridLines : true,
- scaleGridLineColor : "rgba(0,0,0,.05)",
- scaleGridLineWidth : 1,
- bezierCurve : true,
- pointDot : true,
- pointDotRadius : 4,
- pointDotStrokeWidth : 2,
- datasetStroke : true,
- datasetStrokeWidth : 2,
- datasetFill : true,
- animation : true,
- animationSteps : 60,
- animationEasing : "easeOutQuart",
- onAnimationComplete : null
- };
- var config = (options) ? mergeChartConfig(chart.Line.defaults,options) : chart.Line.defaults;
-
- return new Line(data,config,context);
- }
-
- this.Bar = function(data,options){
- chart.Bar.defaults = {
- scaleOverlay : false,
- scaleOverride : false,
- scaleSteps : null,
- scaleStepWidth : null,
- scaleStartValue : null,
- scaleLineColor : "rgba(0,0,0,.1)",
- scaleLineWidth : 1,
- scaleShowLabels : true,
- scaleLabel : "<%=value%>",
- scaleFontFamily : "'Arial'",
- scaleFontSize : 12,
- scaleFontStyle : "normal",
- scaleFontColor : "#666",
- scaleShowGridLines : true,
- scaleGridLineColor : "rgba(0,0,0,.05)",
- scaleGridLineWidth : 1,
- barShowStroke : true,
- barStrokeWidth : 2,
- barValueSpacing : 5,
- barDatasetSpacing : 1,
- animation : true,
- animationSteps : 60,
- animationEasing : "easeOutQuart",
- onAnimationComplete : null
- };
- var config = (options) ? mergeChartConfig(chart.Bar.defaults,options) : chart.Bar.defaults;
-
- return new Bar(data,config,context);
- }
-
- var clear = function(c){
- c.clearRect(0, 0, width, height);
- };
+ // Number - Number of animation steps
+ animationSteps: 60,
- var PolarArea = function(data,config,ctx){
- var maxSize, scaleHop, calculatedScale, labelHeight, scaleHeight, valueBounds, labelTemplateString;
-
-
- calculateDrawingSizes();
-
- valueBounds = getValueBounds();
+ // String - Animation easing effect
+ animationEasing: "easeOutQuart",
- labelTemplateString = (config.scaleShowLabels)? config.scaleLabel : null;
+ // Boolean - If we should show the scale at all
+ showScale: true,
- //Check and set the scale
- if (!config.scaleOverride){
-
- calculatedScale = calculateScale(scaleHeight,valueBounds.maxSteps,valueBounds.minSteps,valueBounds.maxValue,valueBounds.minValue,labelTemplateString);
- }
- else {
- calculatedScale = {
- steps : config.scaleSteps,
- stepValue : config.scaleStepWidth,
- graphMin : config.scaleStartValue,
- labels : []
- }
- populateLabels(labelTemplateString, calculatedScale.labels,calculatedScale.steps,config.scaleStartValue,config.scaleStepWidth);
- }
-
- scaleHop = maxSize/(calculatedScale.steps);
-
- //Wrap in an animation loop wrapper
- animationLoop(config,drawScale,drawAllSegments,ctx);
-
- function calculateDrawingSizes(){
- maxSize = (Min([width,height])/2);
- //Remove whatever is larger - the font size or line width.
-
- maxSize -= Max([config.scaleFontSize*0.5,config.scaleLineWidth*0.5]);
-
- labelHeight = config.scaleFontSize*2;
- //If we're drawing the backdrop - add the Y padding to the label height and remove from drawing region.
- if (config.scaleShowLabelBackdrop){
- labelHeight += (2 * config.scaleBackdropPaddingY);
- maxSize -= config.scaleBackdropPaddingY*1.5;
- }
-
- scaleHeight = maxSize;
- //If the label height is less than 5, set it to 5 so we don't have lines on top of each other.
- labelHeight = Default(labelHeight,5);
- }
- function drawScale(){
- for (var i=0; i<calculatedScale.steps; i++){
- //If the line object is there
- if (config.scaleShowLine){
- ctx.beginPath();
- ctx.arc(width/2, height/2, scaleHop * (i + 1), 0, (Math.PI * 2), true);
- ctx.strokeStyle = config.scaleLineColor;
- ctx.lineWidth = config.scaleLineWidth;
- ctx.stroke();
- }
+ // Boolean - If we want to override with a hard coded scale
+ scaleOverride: false,
- if (config.scaleShowLabels){
- ctx.textAlign = "center";
- ctx.font = config.scaleFontStyle + " " + config.scaleFontSize + "px " + config.scaleFontFamily;
- var label = calculatedScale.labels[i];
- //If the backdrop object is within the font object
- if (config.scaleShowLabelBackdrop){
- var textWidth = ctx.measureText(label).width;
- ctx.fillStyle = config.scaleBackdropColor;
- ctx.beginPath();
- ctx.rect(
- Math.round(width/2 - textWidth/2 - config.scaleBackdropPaddingX), //X
- Math.round(height/2 - (scaleHop * (i + 1)) - config.scaleFontSize*0.5 - config.scaleBackdropPaddingY),//Y
- Math.round(textWidth + (config.scaleBackdropPaddingX*2)), //Width
- Math.round(config.scaleFontSize + (config.scaleBackdropPaddingY*2)) //Height
- );
- ctx.fill();
- }
- ctx.textBaseline = "middle";
- ctx.fillStyle = config.scaleFontColor;
- ctx.fillText(label,width/2,height/2 - (scaleHop * (i + 1)));
- }
- }
- }
- function drawAllSegments(animationDecimal){
- var startAngle = -Math.PI/2,
- angleStep = (Math.PI*2)/data.length,
- scaleAnimation = 1,
- rotateAnimation = 1;
- if (config.animation) {
- if (config.animateScale) {
- scaleAnimation = animationDecimal;
- }
- if (config.animateRotate){
- rotateAnimation = animationDecimal;
- }
- }
+ // ** Required if scaleOverride is true **
+ // Number - The number of steps in a hard coded scale
+ scaleSteps: null,
+ // Number - The value jump in the hard coded scale
+ scaleStepWidth: null,
+ // Number - The scale starting value
+ scaleStartValue: null,
- for (var i=0; i<data.length; i++){
+ // String - Colour of the scale line
+ scaleLineColor: "rgba(0,0,0,.1)",
- ctx.beginPath();
- ctx.arc(width/2,height/2,scaleAnimation * calculateOffset(data[i].value,calculatedScale,scaleHop),startAngle, startAngle + rotateAnimation*angleStep, false);
- ctx.lineTo(width/2,height/2);
- ctx.closePath();
- ctx.fillStyle = data[i].color;
- ctx.fill();
+ // Number - Pixel width of the scale line
+ scaleLineWidth: 1,
- if(config.segmentShowStroke){
- ctx.strokeStyle = config.segmentStrokeColor;
- ctx.lineWidth = config.segmentStrokeWidth;
- ctx.stroke();
- }
- startAngle += rotateAnimation*angleStep;
- }
- }
- function getValueBounds() {
- var upperValue = Number.MIN_VALUE;
- var lowerValue = Number.MAX_VALUE;
- for (var i=0; i<data.length; i++){
- if (data[i].value > upperValue) {upperValue = data[i].value;}
- if (data[i].value < lowerValue) {lowerValue = data[i].value;}
- };
+ // Boolean - Whether to show labels on the scale
+ scaleShowLabels: true,
- var maxSteps = Math.floor((scaleHeight / (labelHeight*0.66)));
- var minSteps = Math.floor((scaleHeight / labelHeight*0.5));
-
- return {
- maxValue : upperValue,
- minValue : lowerValue,
- maxSteps : maxSteps,
- minSteps : minSteps
- };
-
+ // Interpolated JS string - can access value
+ scaleLabel: "<%=value%>",
- }
- }
+ // Boolean - Whether the scale should stick to integers, and not show any floats even if drawing space is there
+ scaleIntegersOnly: true,
- var Radar = function (data,config,ctx) {
- var maxSize, scaleHop, calculatedScale, labelHeight, scaleHeight, valueBounds, labelTemplateString;
-
- //If no labels are defined set to an empty array, so referencing length for looping doesn't blow up.
- if (!data.labels) data.labels = [];
-
- calculateDrawingSizes();
+ // Boolean - Whether the scale should start at zero, or an order of magnitude down from the lowest value
+ scaleBeginAtZero: false,
- var valueBounds = getValueBounds();
+ // String - Scale label font declaration for the scale label
+ scaleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
- labelTemplateString = (config.scaleShowLabels)? config.scaleLabel : null;
+ // Number - Scale label font size in pixels
+ scaleFontSize: 12,
- //Check and set the scale
- if (!config.scaleOverride){
-
- calculatedScale = calculateScale(scaleHeight,valueBounds.maxSteps,valueBounds.minSteps,valueBounds.maxValue,valueBounds.minValue,labelTemplateString);
- }
- else {
- calculatedScale = {
- steps : config.scaleSteps,
- stepValue : config.scaleStepWidth,
- graphMin : config.scaleStartValue,
- labels : []
- }
- populateLabels(labelTemplateString, calculatedScale.labels,calculatedScale.steps,config.scaleStartValue,config.scaleStepWidth);
- }
-
- scaleHop = maxSize/(calculatedScale.steps);
-
- animationLoop(config,drawScale,drawAllDataPoints,ctx);
-
- //Radar specific functions.
- function drawAllDataPoints(animationDecimal){
- var rotationDegree = (2*Math.PI)/data.datasets[0].data.length;
-
- ctx.save();
- //translate to the centre of the canvas.
- ctx.translate(width/2,height/2);
-
- //We accept multiple data sets for radar charts, so show loop through each set
- for (var i=0; i<data.datasets.length; i++){
- ctx.beginPath();
+ // String - Scale label font weight style
+ scaleFontStyle: "normal",
- ctx.moveTo(0,animationDecimal*(-1*calculateOffset(data.datasets[i].data[0],calculatedScale,scaleHop)));
- for (var j=1; j<data.datasets[i].data.length; j++){
- ctx.rotate(rotationDegree);
- ctx.lineTo(0,animationDecimal*(-1*calculateOffset(data.datasets[i].data[j],calculatedScale,scaleHop)));
-
- }
- ctx.closePath();
-
-
- ctx.fillStyle = data.datasets[i].fillColor;
- ctx.strokeStyle = data.datasets[i].strokeColor;
- ctx.lineWidth = config.datasetStrokeWidth;
- ctx.fill();
- ctx.stroke();
-
-
- if (config.pointDot){
- ctx.fillStyle = data.datasets[i].pointColor;
- ctx.strokeStyle = data.datasets[i].pointStrokeColor;
- ctx.lineWidth = config.pointDotStrokeWidth;
- for (var k=0; k<data.datasets[i].data.length; k++){
- ctx.rotate(rotationDegree);
- ctx.beginPath();
- ctx.arc(0,animationDecimal*(-1*calculateOffset(data.datasets[i].data[k],calculatedScale,scaleHop)),config.pointDotRadius,2*Math.PI,false);
- ctx.fill();
- ctx.stroke();
- }
-
- }
- ctx.rotate(rotationDegree);
-
- }
- ctx.restore();
-
-
- }
- function drawScale(){
- var rotationDegree = (2*Math.PI)/data.datasets[0].data.length;
- ctx.save();
- ctx.translate(width / 2, height / 2);
-
- if (config.angleShowLineOut){
- ctx.strokeStyle = config.angleLineColor;
- ctx.lineWidth = config.angleLineWidth;
- for (var h=0; h<data.datasets[0].data.length; h++){
-
- ctx.rotate(rotationDegree);
- ctx.beginPath();
- ctx.moveTo(0,0);
- ctx.lineTo(0,-maxSize);
- ctx.stroke();
- }
- }
+ // String - Scale label font colour
+ scaleFontColor: "#666",
- for (var i=0; i<calculatedScale.steps; i++){
- ctx.beginPath();
-
- if(config.scaleShowLine){
- ctx.strokeStyle = config.scaleLineColor;
- ctx.lineWidth = config.scaleLineWidth;
- ctx.moveTo(0,-scaleHop * (i+1));
- for (var j=0; j<data.datasets[0].data.length; j++){
- ctx.rotate(rotationDegree);
- ctx.lineTo(0,-scaleHop * (i+1));
- }
- ctx.closePath();
- ctx.stroke();
-
- }
-
- if (config.scaleShowLabels){
- ctx.textAlign = 'center';
- ctx.font = config.scaleFontStyle + " " + config.scaleFontSize+"px " + config.scaleFontFamily;
- ctx.textBaseline = "middle";
-
- if (config.scaleShowLabelBackdrop){
- var textWidth = ctx.measureText(calculatedScale.labels[i]).width;
- ctx.fillStyle = config.scaleBackdropColor;
- ctx.beginPath();
- ctx.rect(
- Math.round(- textWidth/2 - config.scaleBackdropPaddingX), //X
- Math.round((-scaleHop * (i + 1)) - config.scaleFontSize*0.5 - config.scaleBackdropPaddingY),//Y
- Math.round(textWidth + (config.scaleBackdropPaddingX*2)), //Width
- Math.round(config.scaleFontSize + (config.scaleBackdropPaddingY*2)) //Height
- );
- ctx.fill();
- }
- ctx.fillStyle = config.scaleFontColor;
- ctx.fillText(calculatedScale.labels[i],0,-scaleHop*(i+1));
- }
+ // Boolean - whether or not the chart should be responsive and resize when the browser does.
+ responsive: false,
- }
- for (var k=0; k<data.labels.length; k++){
- ctx.font = config.pointLabelFontStyle + " " + config.pointLabelFontSize+"px " + config.pointLabelFontFamily;
- ctx.fillStyle = config.pointLabelFontColor;
- var opposite = Math.sin(rotationDegree*k) * (maxSize + config.pointLabelFontSize);
- var adjacent = Math.cos(rotationDegree*k) * (maxSize + config.pointLabelFontSize);
-
- if(rotationDegree*k == Math.PI || rotationDegree*k == 0){
- ctx.textAlign = "center";
- }
- else if(rotationDegree*k > Math.PI){
- ctx.textAlign = "right";
- }
- else{
- ctx.textAlign = "left";
- }
-
- ctx.textBaseline = "middle";
-
- ctx.fillText(data.labels[k],opposite,-adjacent);
-
- }
- ctx.restore();
- };
- function calculateDrawingSizes(){
- maxSize = (Min([width,height])/2);
-
- labelHeight = config.scaleFontSize*2;
-
- var labelLength = 0;
- for (var i=0; i<data.labels.length; i++){
- ctx.font = config.pointLabelFontStyle + " " + config.pointLabelFontSize+"px " + config.pointLabelFontFamily;
- var textMeasurement = ctx.measureText(data.labels[i]).width;
- if(textMeasurement>labelLength) labelLength = textMeasurement;
- }
-
- //Figure out whats the largest - the height of the text or the width of what's there, and minus it from the maximum usable size.
- maxSize -= Max([labelLength,((config.pointLabelFontSize/2)*1.5)]);
-
- maxSize -= config.pointLabelFontSize;
- maxSize = CapValue(maxSize, null, 0);
- scaleHeight = maxSize;
- //If the label height is less than 5, set it to 5 so we don't have lines on top of each other.
- labelHeight = Default(labelHeight,5);
- };
- function getValueBounds() {
- var upperValue = Number.MIN_VALUE;
- var lowerValue = Number.MAX_VALUE;
-
- for (var i=0; i<data.datasets.length; i++){
- for (var j=0; j<data.datasets[i].data.length; j++){
- if (data.datasets[i].data[j] > upperValue){upperValue = data.datasets[i].data[j]}
- if (data.datasets[i].data[j] < lowerValue){lowerValue = data.datasets[i].data[j]}
- }
- }
+ // Boolean - Determines whether to draw tooltips on the canvas or not - attaches events to touchmove & mousemove
+ showTooltips: true,
- var maxSteps = Math.floor((scaleHeight / (labelHeight*0.66)));
- var minSteps = Math.floor((scaleHeight / labelHeight*0.5));
-
- return {
- maxValue : upperValue,
- minValue : lowerValue,
- maxSteps : maxSteps,
- minSteps : minSteps
- };
-
+ // Array - Array of string names to attach tooltip events
+ tooltipEvents: ["mousemove", "touchstart", "touchmove", "mouseout"],
- }
- }
+ // String - Tooltip background colour
+ tooltipFillColor: "rgba(0,0,0,0.8)",
- var Pie = function(data,config,ctx){
- var segmentTotal = 0;
-
- //In case we have a canvas that is not a square. Minus 5 pixels as padding round the edge.
- var pieRadius = Min([height/2,width/2]) - 5;
-
- for (var i=0; i<data.length; i++){
- segmentTotal += data[i].value;
- }
-
-
- animationLoop(config,null,drawPieSegments,ctx);
-
- function drawPieSegments (animationDecimal){
- var cumulativeAngle = -Math.PI/2,
- scaleAnimation = 1,
- rotateAnimation = 1;
- if (config.animation) {
- if (config.animateScale) {
- scaleAnimation = animationDecimal;
- }
- if (config.animateRotate){
- rotateAnimation = animationDecimal;
- }
- }
- for (var i=0; i<data.length; i++){
- var segmentAngle = rotateAnimation * ((data[i].value/segmentTotal) * (Math.PI*2));
- ctx.beginPath();
- ctx.arc(width/2,height/2,scaleAnimation * pieRadius,cumulativeAngle,cumulativeAngle + segmentAngle);
- ctx.lineTo(width/2,height/2);
- ctx.closePath();
- ctx.fillStyle = data[i].color;
- ctx.fill();
-
- if(config.segmentShowStroke){
- ctx.lineWidth = config.segmentStrokeWidth;
- ctx.strokeStyle = config.segmentStrokeColor;
- ctx.stroke();
- }
- cumulativeAngle += segmentAngle;
- }
- }
- }
+ // String - Tooltip label font declaration for the scale label
+ tooltipFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
- var Doughnut = function(data,config,ctx){
- var segmentTotal = 0;
-
- //In case we have a canvas that is not a square. Minus 5 pixels as padding round the edge.
- var doughnutRadius = Min([height/2,width/2]) - 5;
-
- var cutoutRadius = doughnutRadius * (config.percentageInnerCutout/100);
-
- for (var i=0; i<data.length; i++){
- segmentTotal += data[i].value;
- }
-
-
- animationLoop(config,null,drawPieSegments,ctx);
-
-
- function drawPieSegments (animationDecimal){
- var cumulativeAngle = -Math.PI/2,
- scaleAnimation = 1,
- rotateAnimation = 1;
- if (config.animation) {
- if (config.animateScale) {
- scaleAnimation = animationDecimal;
- }
- if (config.animateRotate){
- rotateAnimation = animationDecimal;
- }
- }
- for (var i=0; i<data.length; i++){
- var segmentAngle = rotateAnimation * ((data[i].value/segmentTotal) * (Math.PI*2));
- ctx.beginPath();
- ctx.arc(width/2,height/2,scaleAnimation * doughnutRadius,cumulativeAngle,cumulativeAngle + segmentAngle,false);
- ctx.arc(width/2,height/2,scaleAnimation * cutoutRadius,cumulativeAngle + segmentAngle,cumulativeAngle,true);
- ctx.closePath();
- ctx.fillStyle = data[i].color;
- ctx.fill();
-
- if(config.segmentShowStroke){
- ctx.lineWidth = config.segmentStrokeWidth;
- ctx.strokeStyle = config.segmentStrokeColor;
- ctx.stroke();
- }
- cumulativeAngle += segmentAngle;
- }
- }
-
-
-
- }
+ // Number - Tooltip label font size in pixels
+ tooltipFontSize: 14,
+
+ // String - Tooltip font weight style
+ tooltipFontStyle: "normal",
+
+ // String - Tooltip label font colour
+ tooltipFontColor: "#fff",
+
+ // String - Tooltip title font declaration for the scale label
+ tooltipTitleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
+
+ // Number - Tooltip title font size in pixels
+ tooltipTitleFontSize: 14,
+
+ // String - Tooltip title font weight style
+ tooltipTitleFontStyle: "bold",
+
+ // String - Tooltip title font colour
+ tooltipTitleFontColor: "#fff",
+
+ // Number - pixel width of padding around tooltip text
+ tooltipYPadding: 6,
+
+ // Number - pixel width of padding around tooltip text
+ tooltipXPadding: 6,
+
+ // Number - Size of the caret on the tooltip
+ tooltipCaretSize: 8,
+
+ // Number - Pixel radius of the tooltip border
+ tooltipCornerRadius: 6,
+
+ // Number - Pixel offset from point x to tooltip edge
+ tooltipXOffset: 10,
+
+ // String - Template string for single tooltips
+ tooltipTemplate: "<%if (label){%><%=label%>: <%}%><%= value %>",
+
+ // String - Template string for single tooltips
+ multiTooltipTemplate: "<%= value %>",
+
+ // String - Colour behind the legend colour block
+ multiTooltipKeyBackground: '#fff',
+
+ // Function - Will fire on animation progression.
+ onAnimationProgress: function(){},
+
+ // Function - Will fire on animation completion.
+ onAnimationComplete: function(){}
- var Line = function(data,config,ctx){
- var maxSize, scaleHop, calculatedScale, labelHeight, scaleHeight, valueBounds, labelTemplateString, valueHop,widestXLabel, xAxisLength,yAxisPosX,xAxisPosY, rotateLabels = 0;
-
- calculateDrawingSizes();
-
- valueBounds = getValueBounds();
- //Check and set the scale
- labelTemplateString = (config.scaleShowLabels)? config.scaleLabel : "";
- if (!config.scaleOverride){
-
- calculatedScale = calculateScale(scaleHeight,valueBounds.maxSteps,valueBounds.minSteps,valueBounds.maxValue,valueBounds.minValue,labelTemplateString);
- }
- else {
- calculatedScale = {
- steps : config.scaleSteps,
- stepValue : config.scaleStepWidth,
- graphMin : config.scaleStartValue,
- labels : []
- }
- populateLabels(labelTemplateString, calculatedScale.labels,calculatedScale.steps,config.scaleStartValue,config.scaleStepWidth);
}
-
- scaleHop = Math.floor(scaleHeight/calculatedScale.steps);
- calculateXAxisSize();
- animationLoop(config,drawScale,drawLines,ctx);
-
- function drawLines(animPc){
- for (var i=0; i<data.datasets.length; i++){
- ctx.strokeStyle = data.datasets[i].strokeColor;
- ctx.lineWidth = config.datasetStrokeWidth;
- ctx.beginPath();
- ctx.moveTo(yAxisPosX, xAxisPosY - animPc*(calculateOffset(data.datasets[i].data[0],calculatedScale,scaleHop)))
+ };
- for (var j=1; j<data.datasets[i].data.length; j++){
- if (config.bezierCurve){
- ctx.bezierCurveTo(xPos(j-0.5),yPos(i,j-1),xPos(j-0.5),yPos(i,j),xPos(j),yPos(i,j));
- }
- else{
- ctx.lineTo(xPos(j),yPos(i,j));
+ //Create a dictionary of chart types, to allow for extension of existing types
+ Chart.types = {};
+
+ //Global Chart helpers object for utility methods and classes
+ var helpers = Chart.helpers = {};
+
+ //-- Basic js utility methods
+ var each = helpers.each = function(loopable,callback,self){
+ 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;
+ for (i=0; i<loopable.length; i++){
+ callback.apply(self,[loopable[i], i].concat(additionalArgs));
}
}
- ctx.stroke();
- if (config.datasetFill){
- ctx.lineTo(yAxisPosX + (valueHop*(data.datasets[i].data.length-1)),xAxisPosY);
- ctx.lineTo(yAxisPosX,xAxisPosY);
- ctx.closePath();
- ctx.fillStyle = data.datasets[i].fillColor;
- ctx.fill();
- }
else{
- ctx.closePath();
- }
- if(config.pointDot){
- ctx.fillStyle = data.datasets[i].pointColor;
- ctx.strokeStyle = data.datasets[i].pointStrokeColor;
- ctx.lineWidth = config.pointDotStrokeWidth;
- for (var k=0; k<data.datasets[i].data.length; k++){
- ctx.beginPath();
- ctx.arc(yAxisPosX + (valueHop *k),xAxisPosY - animPc*(calculateOffset(data.datasets[i].data[k],calculatedScale,scaleHop)),config.pointDotRadius,0,Math.PI*2,true);
- ctx.fill();
- ctx.stroke();
+ for (var item in loopable){
+ callback.apply(self,[loopable[item],item].concat(additionalArgs));
}
}
}
-
- function yPos(dataSet,iteration){
- return xAxisPosY - animPc*(calculateOffset(data.datasets[dataSet].data[iteration],calculatedScale,scaleHop));
- }
- function xPos(iteration){
- return yAxisPosX + (valueHop * iteration);
- }
- }
- function drawScale(){
- //X axis line
- ctx.lineWidth = config.scaleLineWidth;
- ctx.strokeStyle = config.scaleLineColor;
- ctx.beginPath();
- ctx.moveTo(width-widestXLabel/2+5,xAxisPosY);
- ctx.lineTo(width-(widestXLabel/2)-xAxisLength-5,xAxisPosY);
- ctx.stroke();
-
-
- if (rotateLabels > 0){
- ctx.save();
- ctx.textAlign = "right";
+ },
+ clone = helpers.clone = function(obj){
+ var objClone = {};
+ each(obj,function(value,key){
+ if (obj.hasOwnProperty(key)) objClone[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;
+ },
+ merge = helpers.merge = function(base,master){
+ //Merge properties in left object over to a shallow clone of object right.
+ var args = Array.prototype.slice.call(arguments,0);
+ args.unshift({});
+ return extend.apply(null, args);
+ },
+ indexOf = helpers.indexOf = function(arrayToSearch, item){
+ if (Array.prototype.indexOf) {
+ return arrayToSearch.indexOf(item);
}
else{
- ctx.textAlign = "center";
- }
- ctx.fillStyle = config.scaleFontColor;
- for (var i=0; i<data.labels.length; i++){
- ctx.save();
- if (rotateLabels > 0){
- ctx.translate(yAxisPosX + i*valueHop,xAxisPosY + config.scaleFontSize);
- ctx.rotate(-(rotateLabels * (Math.PI/180)));
- ctx.fillText(data.labels[i], 0,0);
- ctx.restore();
- }
-
- else{
- ctx.fillText(data.labels[i], yAxisPosX + i*valueHop,xAxisPosY + config.scaleFontSize+3);
- }
-
- ctx.beginPath();
- ctx.moveTo(yAxisPosX + i * valueHop, xAxisPosY+3);
-
- //Check i isnt 0, so we dont go over the Y axis twice.
- if(config.scaleShowGridLines && i>0){
- ctx.lineWidth = config.scaleGridLineWidth;
- ctx.strokeStyle = config.scaleGridLineColor;
- ctx.lineTo(yAxisPosX + i * valueHop, 5);
- }
- else{
- ctx.lineTo(yAxisPosX + i * valueHop, xAxisPosY+3);
+ for (var i = 0; i < arrayToSearch.length; i++) {
+ if (arrayToSearch[i] === item) return i;
}
- ctx.stroke();
+ return -1;
}
-
- //Y axis
- ctx.lineWidth = config.scaleLineWidth;
- ctx.strokeStyle = config.scaleLineColor;
- ctx.beginPath();
- ctx.moveTo(yAxisPosX,xAxisPosY+5);
- ctx.lineTo(yAxisPosX,5);
- ctx.stroke();
-
- ctx.textAlign = "right";
- ctx.textBaseline = "middle";
- for (var j=0; j<calculatedScale.steps; j++){
- ctx.beginPath();
- ctx.moveTo(yAxisPosX-3,xAxisPosY - ((j+1) * scaleHop));
- if (config.scaleShowGridLines){
- ctx.lineWidth = config.scaleGridLineWidth;
- ctx.strokeStyle = config.scaleGridLineColor;
- ctx.lineTo(yAxisPosX + xAxisLength + 5,xAxisPosY - ((j+1) * scaleHop));
- }
- else{
- ctx.lineTo(yAxisPosX-0.5,xAxisPosY - ((j+1) * scaleHop));
- }
-
- ctx.stroke();
-
- if (config.scaleShowLabels){
- ctx.fillText(calculatedScale.labels[j],yAxisPosX-8,xAxisPosY - ((j+1) * scaleHop));
+ },
+ 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);
+
+ ChartElement.__super__ = parent.prototype;
+
+ 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 (window.console && typeof window.console.warn == "function") console.warn(str);
+ },
+ amd = helpers.amd = (typeof root.define == 'function' && root.define.amd),
+ //-- 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 );
+ },
+ cap = helpers.cap = function(valueToCap,maxValue,minValue){
+ if(isNumber(maxValue)) {
+ if( valueToCap > maxValue ) {
+ return maxValue;
}
}
-
-
- }
- function calculateXAxisSize(){
- var longestText = 1;
- //if we are showing the labels
- if (config.scaleShowLabels){
- ctx.font = config.scaleFontStyle + " " + config.scaleFontSize+"px " + config.scaleFontFamily;
- for (var i=0; i<calculatedScale.labels.length; i++){
- var measuredText = ctx.measureText(calculatedScale.labels[i]).width;
- longestText = (measuredText > longestText)? measuredText : longestText;
+ else if(isNumber(minValue)){
+ if ( valueToCap < minValue ){
+ return minValue;
}
- //Add a little extra padding from the y axis
- longestText +=10;
}
- xAxisLength = width - longestText - widestXLabel;
- valueHop = Math.floor(xAxisLength/(data.labels.length-1));
-
- yAxisPosX = width-widestXLabel/2-xAxisLength;
- xAxisPosY = scaleHeight + config.scaleFontSize/2;
- }
- function calculateDrawingSizes(){
- maxSize = height;
-
- //Need to check the X axis first - measure the length of each text metric, and figure out if we need to rotate by 45 degrees.
- ctx.font = config.scaleFontStyle + " " + config.scaleFontSize+"px " + config.scaleFontFamily;
- widestXLabel = 1;
- for (var i=0; i<data.labels.length; i++){
- var textLength = ctx.measureText(data.labels[i]).width;
- //If the text length is longer - make that equal to longest text!
- widestXLabel = (textLength > widestXLabel)? textLength : widestXLabel;
+ return valueToCap;
+ },
+ getDecimalPlaces = helpers.getDecimalPlaces = function(num){
+ if (num%1!==0 && isNumber(num)){
+ return num.toString().split(".")[1].length;
}
- if (width/data.labels.length < widestXLabel){
- rotateLabels = 45;
- if (width/data.labels.length < Math.cos(rotateLabels) * widestXLabel){
- rotateLabels = 90;
- maxSize -= widestXLabel;
- }
- else{
- maxSize -= Math.sin(rotateLabels) * widestXLabel;
- }
+ else {
+ return 0;
}
- else{
- maxSize -= config.scaleFontSize;
+ },
+ toRadians = helpers.radians = function(degrees){
+ return degrees * (Math.PI/180);
+ },
+ // 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);
+
+
+ var angle = Math.PI * 2 + Math.atan2(distanceFromYCenter, distanceFromXCenter);
+
+ //If the segment is in the top left quadrant, we need to add another rotation to the angle
+ if (distanceFromXCenter < 0 && distanceFromYCenter < 0){
+ angle += Math.PI*2;
}
-
- //Add a little padding between the x line and the text
- maxSize -= 5;
-
-
- labelHeight = config.scaleFontSize;
-
- maxSize -= labelHeight;
- //Set 5 pixels greater than the font size to allow for a little padding from the X axis.
-
- scaleHeight = maxSize;
-
- //Then get the area above we can safely draw on.
-
- }
- function getValueBounds() {
- var upperValue = Number.MIN_VALUE;
- var lowerValue = Number.MAX_VALUE;
- for (var i=0; i<data.datasets.length; i++){
- for (var j=0; j<data.datasets[i].data.length; j++){
- if ( data.datasets[i].data[j] > upperValue) { upperValue = data.datasets[i].data[j] };
- if ( data.datasets[i].data[j] < lowerValue) { lowerValue = data.datasets[i].data[j] };
- }
+
+ return {
+ angle: angle,
+ distance: radialDistanceFromCenter
};
-
- var maxSteps = Math.floor((scaleHeight / (labelHeight*0.66)));
- var minSteps = Math.floor((scaleHeight / labelHeight*0.5));
-
+ },
+ 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
+ var d01=Math.sqrt(Math.pow(MiddlePoint.x-FirstPoint.x,2)+Math.pow(MiddlePoint.y-FirstPoint.y,2)),
+ d12=Math.sqrt(Math.pow(AfterPoint.x-MiddlePoint.x,2)+Math.pow(AfterPoint.y-MiddlePoint.y,2)),
+ fa=t*d01/(d01+d12),// scaling factor for triangle Ta
+ fb=t*d12/(d01+d12);
return {
- maxValue : upperValue,
- minValue : lowerValue,
- maxSteps : maxSteps,
- minSteps : minSteps
+ inner : {
+ x : MiddlePoint.x-fa*(AfterPoint.x-FirstPoint.x),
+ y : MiddlePoint.y-fa*(AfterPoint.y-FirstPoint.y)
+ },
+ outer : {
+ x: MiddlePoint.x+fb*(AfterPoint.x-FirstPoint.x),
+ y : MiddlePoint.y+fb*(AfterPoint.y-FirstPoint.y)
+ }
};
-
-
- }
+ },
+ calculateOrderOfMagnitude = helpers.calculateOrderOfMagnitude = function(val){
+ return Math.floor(Math.log(val) / Math.LN10);
+ },
+ calculateScaleRange = helpers.calculateScaleRange = function(valuesArray, drawingSize, textSize, startFromZero, integersOnly){
-
- }
-
- var Bar = function(data,config,ctx){
- var maxSize, scaleHop, calculatedScale, labelHeight, scaleHeight, valueBounds, labelTemplateString, valueHop,widestXLabel, xAxisLength,yAxisPosX,xAxisPosY,barWidth, rotateLabels = 0;
-
- calculateDrawingSizes();
-
- valueBounds = getValueBounds();
- //Check and set the scale
- labelTemplateString = (config.scaleShowLabels)? config.scaleLabel : "";
- if (!config.scaleOverride){
-
- calculatedScale = calculateScale(scaleHeight,valueBounds.maxSteps,valueBounds.minSteps,valueBounds.maxValue,valueBounds.minValue,labelTemplateString);
- }
- else {
- calculatedScale = {
- steps : config.scaleSteps,
- stepValue : config.scaleStepWidth,
- graphMin : config.scaleStartValue,
- labels : []
- }
- populateLabels(labelTemplateString, calculatedScale.labels,calculatedScale.steps,config.scaleStartValue,config.scaleStepWidth);
- }
-
- scaleHop = Math.floor(scaleHeight/calculatedScale.steps);
- calculateXAxisSize();
- animationLoop(config,drawScale,drawBars,ctx);
-
- function drawBars(animPc){
- ctx.lineWidth = config.barStrokeWidth;
- for (var i=0; i<data.datasets.length; i++){
- ctx.fillStyle = data.datasets[i].fillColor;
- ctx.strokeStyle = data.datasets[i].strokeColor;
- for (var j=0; j<data.datasets[i].data.length; j++){
- var barOffset = yAxisPosX + config.barValueSpacing + valueHop*j + barWidth*i + config.barDatasetSpacing*i + config.barStrokeWidth*i;
-
- ctx.beginPath();
- ctx.moveTo(barOffset, xAxisPosY);
- ctx.lineTo(barOffset, xAxisPosY - animPc*calculateOffset(data.datasets[i].data[j],calculatedScale,scaleHop)+(config.barStrokeWidth/2));
- ctx.lineTo(barOffset + barWidth, xAxisPosY - animPc*calculateOffset(data.datasets[i].data[j],calculatedScale,scaleHop)+(config.barStrokeWidth/2));
- ctx.lineTo(barOffset + barWidth, xAxisPosY);
- if(config.barShowStroke){
- ctx.stroke();
- }
- ctx.closePath();
- ctx.fill();
+ //Set a minimum step of two - a point at the top of the graph, and a point at the base
+ var minSteps = 2,
+ maxSteps = Math.floor(drawingSize/(textSize * 1.5)),
+ skipFitting = (minSteps >= maxSteps);
+
+ var maxValue = max(valuesArray),
+ minValue = min(valuesArray);
+
+ // We need some degree of seperation here to calculate the scales if all the values are the same
+ // Adding/minusing 0.5 will give us a range of 1.
+ if (maxValue === minValue){
+ maxValue += 0.5;
+ // So we don't end up with a graph with a negative start value if we've said always start from zero
+ if (minValue >= 0.5 && !startFromZero){
+ minValue -= 0.5;
+ }
+ else{
+ // Make up a whole number above the values
+ maxValue += 0.5;
}
}
-
- }
- function drawScale(){
- //X axis line
- ctx.lineWidth = config.scaleLineWidth;
- ctx.strokeStyle = config.scaleLineColor;
- ctx.beginPath();
- ctx.moveTo(width-widestXLabel/2+5,xAxisPosY);
- ctx.lineTo(width-(widestXLabel/2)-xAxisLength-5,xAxisPosY);
- ctx.stroke();
-
-
- if (rotateLabels > 0){
- ctx.save();
- ctx.textAlign = "right";
- }
- else{
- ctx.textAlign = "center";
- }
- ctx.fillStyle = config.scaleFontColor;
- for (var i=0; i<data.labels.length; i++){
- ctx.save();
- if (rotateLabels > 0){
- ctx.translate(yAxisPosX + i*valueHop,xAxisPosY + config.scaleFontSize);
- ctx.rotate(-(rotateLabels * (Math.PI/180)));
- ctx.fillText(data.labels[i], 0,0);
- ctx.restore();
+
+ var valueRange = Math.abs(maxValue - minValue),
+ rangeOrderOfMagnitude = calculateOrderOfMagnitude(valueRange),
+ graphMax = Math.ceil(maxValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude),
+ graphMin = (startFromZero) ? 0 : Math.floor(minValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude),
+ graphRange = graphMax - graphMin,
+ stepValue = Math.pow(10, rangeOrderOfMagnitude),
+ numberOfSteps = Math.round(graphRange / stepValue);
+
+ //If we have more space on the graph we'll use it to give more definition to the data
+ while((numberOfSteps > maxSteps || (numberOfSteps * 2) < maxSteps) && !skipFitting) {
+ if(numberOfSteps > maxSteps){
+ stepValue *=2;
+ numberOfSteps = Math.round(graphRange/stepValue);
+ // Don't ever deal with a decimal number of steps - cancel fitting and just use the minimum number of steps.
+ if (numberOfSteps % 1 !== 0){
+ skipFitting = true;
+ }
}
-
+ //We can fit in double the amount of scale points on the scale
else{
- ctx.fillText(data.labels[i], yAxisPosX + i*valueHop + valueHop/2,xAxisPosY + config.scaleFontSize+3);
+ //If user has declared ints only, and the step value isn't a decimal
+ if (integersOnly && rangeOrderOfMagnitude >= 0){
+ //If the user has said integers only, we need to check that making the scale more granular wouldn't make it a float
+ if(stepValue/2 % 1 === 0){
+ stepValue /=2;
+ numberOfSteps = Math.round(graphRange/stepValue);
+ }
+ //If it would make it a float break out of the loop
+ else{
+ break;
+ }
+ }
+ //If the scale doesn't have to be an int, make the scale more granular anyway.
+ else{
+ stepValue /=2;
+ numberOfSteps = Math.round(graphRange/stepValue);
+ }
+
}
+ }
- ctx.beginPath();
- ctx.moveTo(yAxisPosX + (i+1) * valueHop, xAxisPosY+3);
-
- //Check i isnt 0, so we dont go over the Y axis twice.
- ctx.lineWidth = config.scaleGridLineWidth;
- ctx.strokeStyle = config.scaleGridLineColor;
- ctx.lineTo(yAxisPosX + (i+1) * valueHop, 5);
- ctx.stroke();
+ if (skipFitting){
+ numberOfSteps = minSteps;
+ stepValue = graphRange / numberOfSteps;
}
-
- //Y axis
- ctx.lineWidth = config.scaleLineWidth;
- ctx.strokeStyle = config.scaleLineColor;
- ctx.beginPath();
- ctx.moveTo(yAxisPosX,xAxisPosY+5);
- ctx.lineTo(yAxisPosX,5);
- ctx.stroke();
-
- ctx.textAlign = "right";
- ctx.textBaseline = "middle";
- for (var j=0; j<calculatedScale.steps; j++){
- ctx.beginPath();
- ctx.moveTo(yAxisPosX-3,xAxisPosY - ((j+1) * scaleHop));
- if (config.scaleShowGridLines){
- ctx.lineWidth = config.scaleGridLineWidth;
- ctx.strokeStyle = config.scaleGridLineColor;
- ctx.lineTo(yAxisPosX + xAxisLength + 5,xAxisPosY - ((j+1) * scaleHop));
- }
- else{
- ctx.lineTo(yAxisPosX-0.5,xAxisPosY - ((j+1) * scaleHop));
+
+ return {
+ steps : numberOfSteps,
+ stepValue : stepValue,
+ min : graphMin,
+ max : graphMin + (numberOfSteps * stepValue)
+ };
+
+ },
+ /* jshint ignore:start */
+ // Blows up jshint errors based on the new Function constructor
+ //Templating methods
+ //Javascript micro templating by John Resig - source at http://ejohn.org/blog/javascript-micro-templating/
+ template = helpers.template = function(templateString, valuesObject){
+ var cache = {};
+ function tmpl(str, data){
+ // Figure out if we're getting a template, or if we need to
+ // load the template - and be sure to cache the result.
+ var fn = !/\W/.test(str) ?
+ cache[str] = cache[str] :
+
+ // Generate a reusable function that will serve as a template
+ // generator (and which will be cached).
+ new Function("obj",
+ "var p=[],print=function(){p.push.apply(p,arguments);};" +
+
+ // Introduce the data as local variables using with(){}
+ "with(obj){p.push('" +
+
+ // Convert the template into pure JavaScript
+ str
+ .replace(/[\r\t\n]/g, " ")
+ .split("<%").join("\t")
+ .replace(/((^|%>)[^\t]*)'/g, "$1\r")
+ .replace(/\t=(.*?)%>/g, "',$1,'")
+ .split("\t").join("');")
+ .split("%>").join("p.push('")
+ .split("\r").join("\\'") +
+ "');}return p.join('');"
+ );
+
+ // Provide some basic currying to the user
+ return data ? fn( data ) : fn;
+ }
+ return tmpl(templateString,valuesObject);
+ },
+ /* jshint ignore:end */
+ generateLabels = helpers.generateLabels = function(templateString,numberOfSteps,graphMin,stepValue){
+ var labelsArray = new Array(numberOfSteps);
+ if (labelTemplateString){
+ each(labelsArray,function(val,index){
+ labelsArray[index] = template(templateString,{value: (graphMin + (stepValue*(index+1)))});
+ });
+ }
+ return labelsArray;
+ },
+ //--Animation methods
+ //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);
}
-
- ctx.stroke();
- if (config.scaleShowLabels){
- ctx.fillText(calculatedScale.labels[j],yAxisPosX-8,xAxisPosY - ((j+1) * scaleHop));
+ },
+ 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/
+ 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);
+ };
+ })(),
+ animationLoop = helpers.animationLoop = function(callback,totalSteps,easingString,onProgress,onComplete,chartInstance){
+
+ var currentStep = 0,
+ easingFunction = easingEffects[easingString] || easingEffects.linear;
+
+ var animationFrame = function(){
+ currentStep++;
+ var stepDecimal = currentStep/totalSteps;
+ var easeDecimal = easingFunction(stepDecimal);
+
+ callback.call(chartInstance,easeDecimal,stepDecimal, currentStep);
+ onProgress.call(chartInstance,easeDecimal,stepDecimal);
+ if (currentStep < totalSteps){
+ chartInstance.animationFrame = requestAnimFrame(animationFrame);
+ } else{
+ onComplete.apply(chartInstance);
}
+ };
+ requestAnimFrame(animationFrame);
+ },
+ //-- DOM methods
+ getRelativePosition = helpers.getRelativePosition = function(evt){
+ var mouseX, mouseY;
+ var e = evt.originalEvent || evt,
+ canvas = evt.currentTarget || evt.srcElement,
+ boundingRect = canvas.getBoundingClientRect();
+
+ if (e.touches){
+ mouseX = e.touches[0].clientX - boundingRect.left;
+ mouseY = e.touches[0].clientY - boundingRect.top;
+
+ }
+ else{
+ mouseX = e.clientX - boundingRect.left;
+ mouseY = e.clientY - boundingRect.top;
+ }
+
+ return {
+ x : mouseX,
+ y : mouseY
+ };
+
+ },
+ 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;
+ }
+ },
+ 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;
+ }
+ },
+ 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]);
+ });
+ },
+ unbindEvents = helpers.unbindEvents = function (chartInstance, arrayOfEvents) {
+ each(arrayOfEvents, function(handler,eventName){
+ removeEvent(chartInstance.chart.canvas, eventName, handler);
+ });
+ },
+ getMaximumSize = helpers.getMaximumSize = function(domNode){
+ var container = domNode.parentNode;
+ // TODO = check cross browser stuff with this.
+ return container.clientWidth;
+ },
+ retinaScale = helpers.retinaScale = function(chart){
+ var ctx = chart.ctx,
+ width = chart.canvas.width,
+ height = chart.canvas.height;
+ //console.log(width + " x " + height);
+ if (window.devicePixelRatio) {
+ ctx.canvas.style.width = width + "px";
+ ctx.canvas.style.height = height + "px";
+ ctx.canvas.height = height * window.devicePixelRatio;
+ ctx.canvas.width = width * window.devicePixelRatio;
+ ctx.scale(window.devicePixelRatio, window.devicePixelRatio);
}
-
-
+ },
+ //-- Canvas methods
+ clear = helpers.clear = function(chart){
+ chart.ctx.clearRect(0,0,chart.width,chart.height);
+ },
+ fontString = helpers.fontString = function(pixelSize,fontStyle,fontFamily){
+ return fontStyle + " " + pixelSize+"px " + fontFamily;
+ },
+ 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;
+ },
+ 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();
+ };
+
+
+ //Store a reference to each instance - allowing us to globally resize chart instances on window resize.
+ //Destroy method on the chart will remove the instance of the chart from this reference.
+ Chart.instances = {};
+
+ Chart.Type = function(data,options,chart){
+ this.options = options;
+ this.chart = chart;
+ this.id = uid();
+ //Add the chart instance to the global namespace
+ Chart.instances[this.id] = this;
+
+ // Initialize is always called when a chart type is created
+ // By default it is a no op, but it should be extended
+ if (options.responsive){
+ this.resize();
}
- function calculateXAxisSize(){
- var longestText = 1;
- //if we are showing the labels
- if (config.scaleShowLabels){
- ctx.font = config.scaleFontStyle + " " + config.scaleFontSize+"px " + config.scaleFontFamily;
- for (var i=0; i<calculatedScale.labels.length; i++){
- var measuredText = ctx.measureText(calculatedScale.labels[i]).width;
- longestText = (measuredText > longestText)? measuredText : longestText;
- }
- //Add a little extra padding from the y axis
- longestText +=10;
+ this.initialize.call(this,data);
+ };
+
+ //Core methods that'll be a part of every chart type
+ extend(Chart.Type.prototype,{
+ initialize : function(){return this;},
+ clear : function(){
+ clear(this.chart);
+ return this;
+ },
+ stop : function(){
+ // Stops any current animation loop occuring
+ helpers.cancelAnimFrame.call(root, this.animationFrame);
+ return this;
+ },
+ resize : function(callback){
+ this.stop();
+ var canvas = this.chart.canvas,
+ newWidth = getMaximumSize(this.chart.canvas),
+ newHeight = newWidth / this.chart.aspectRatio;
+
+ canvas.width = this.chart.width = newWidth;
+ canvas.height = this.chart.height = newHeight;
+
+ retinaScale(this.chart);
+
+ if (typeof callback === "function"){
+ callback.apply(this, Array.prototype.slice.call(arguments, 1));
}
- xAxisLength = width - longestText - widestXLabel;
- valueHop = Math.floor(xAxisLength/(data.labels.length));
-
- barWidth = (valueHop - config.scaleGridLineWidth*2 - (config.barValueSpacing*2) - (config.barDatasetSpacing*data.datasets.length-1) - ((config.barStrokeWidth/2)*data.datasets.length-1))/data.datasets.length;
-
- yAxisPosX = width-widestXLabel/2-xAxisLength;
- xAxisPosY = scaleHeight + config.scaleFontSize/2;
- }
- function calculateDrawingSizes(){
- maxSize = height;
-
- //Need to check the X axis first - measure the length of each text metric, and figure out if we need to rotate by 45 degrees.
- ctx.font = config.scaleFontStyle + " " + config.scaleFontSize+"px " + config.scaleFontFamily;
- widestXLabel = 1;
- for (var i=0; i<data.labels.length; i++){
- var textLength = ctx.measureText(data.labels[i]).width;
- //If the text length is longer - make that equal to longest text!
- widestXLabel = (textLength > widestXLabel)? textLength : widestXLabel;
+ return this;
+ },
+ reflow : noop,
+ render : function(reflow){
+ if (reflow){
+ this.reflow();
}
- if (width/data.labels.length < widestXLabel){
- rotateLabels = 45;
- if (width/data.labels.length < Math.cos(rotateLabels) * widestXLabel){
- rotateLabels = 90;
- maxSize -= widestXLabel;
- }
- else{
- maxSize -= Math.sin(rotateLabels) * widestXLabel;
+ if (this.options.animation && !reflow){
+ helpers.animationLoop(
+ this.draw,
+ this.options.animationSteps,
+ this.options.animationEasing,
+ this.options.onAnimationProgress,
+ this.options.onAnimationComplete,
+ this
+ );
+ }
+ else{
+ this.draw();
+ this.options.onAnimationComplete.call(this);
+ }
+ return this;
+ },
+ generateLegend : function(){
+ return template(this.options.legendTemplate,this);
+ },
+ destroy : function(){
+ this.clear();
+ unbindEvents(this, this.events);
+ delete Chart.instances[this.id];
+ },
+ showTooltip : function(ChartElements, forceRedraw){
+ // Only redraw the chart if we've actually changed what we're hovering on.
+ if (typeof this.activeElements === 'undefined') this.activeElements = [];
+
+ var isChanged = (function(Elements){
+ var changed = false;
+
+ if (Elements.length !== this.activeElements.length){
+ changed = true;
+ return changed;
}
+
+ each(Elements, function(element, index){
+ if (element !== this.activeElements[index]){
+ changed = true;
+ }
+ }, this);
+ return changed;
+ }).call(this, ChartElements);
+
+ if (!isChanged && !forceRedraw){
+ return;
}
else{
- maxSize -= config.scaleFontSize;
+ this.activeElements = ChartElements;
}
-
- //Add a little padding between the x line and the text
- maxSize -= 5;
-
-
- labelHeight = config.scaleFontSize;
-
- maxSize -= labelHeight;
- //Set 5 pixels greater than the font size to allow for a little padding from the X axis.
-
- scaleHeight = maxSize;
-
- //Then get the area above we can safely draw on.
-
- }
- function getValueBounds() {
- var upperValue = Number.MIN_VALUE;
- var lowerValue = Number.MAX_VALUE;
- for (var i=0; i<data.datasets.length; i++){
- for (var j=0; j<data.datasets[i].data.length; j++){
- if ( data.datasets[i].data[j] > upperValue) { upperValue = data.datasets[i].data[j] };
- if ( data.datasets[i].data[j] < lowerValue) { lowerValue = data.datasets[i].data[j] };
+ this.draw();
+ if (ChartElements.length > 0){
+ // If we have multiple datasets, show a MultiTooltip for all of the data points at that index
+ if (this.datasets && this.datasets.length > 1) {
+ var dataArray,
+ dataIndex;
+
+ for (var i = this.datasets.length - 1; i >= 0; i--) {
+ dataArray = this.datasets[i].points || this.datasets[i].bars || this.datasets[i].segments;
+ dataIndex = indexOf(dataArray, ChartElements[0]);
+ if (dataIndex !== -1){
+ break;
+ }
+ }
+ var tooltipLabels = [],
+ tooltipColors = [],
+ medianPosition = (function(index) {
+
+ // Get all the points at that particular index
+ var Elements = [],
+ dataCollection,
+ xPositions = [],
+ yPositions = [],
+ xMax,
+ yMax,
+ xMin,
+ yMin;
+ helpers.each(this.datasets, function(dataset){
+ dataCollection = dataset.points || dataset.bars || dataset.segments;
+ Elements.push(dataCollection[dataIndex]);
+ });
+
+ helpers.each(Elements, function(element) {
+ xPositions.push(element.x);
+ yPositions.push(element.y);
+
+
+ //Include any colour information about the element
+ tooltipLabels.push(helpers.template(this.options.multiTooltipTemplate, element));
+ tooltipColors.push({
+ fill: element._saved.fillColor || element.fillColor,
+ stroke: element._saved.strokeColor || element.strokeColor
+ });
+
+ }, this);
+
+ yMin = min(yPositions);
+ yMax = max(yPositions);
+
+ xMin = min(xPositions);
+ xMax = max(xPositions);
+
+ return {
+ x: (xMin > this.chart.width/2) ? xMin : xMax,
+ y: (yMin + yMax)/2
+ };
+ }).call(this, dataIndex);
+
+ new Chart.MultiTooltip({
+ x: medianPosition.x,
+ y: medianPosition.y,
+ xPadding: this.options.tooltipXPadding,
+ yPadding: this.options.tooltipYPadding,
+ xOffset: this.options.tooltipXOffset,
+ fillColor: this.options.tooltipFillColor,
+ textColor: this.options.tooltipFontColor,
+ fontFamily: this.options.tooltipFontFamily,
+ fontStyle: this.options.tooltipFontStyle,
+ fontSize: this.options.tooltipFontSize,
+ titleTextColor: this.options.tooltipTitleFontColor,
+ titleFontFamily: this.options.tooltipTitleFontFamily,
+ titleFontStyle: this.options.tooltipTitleFontStyle,
+ titleFontSize: this.options.tooltipTitleFontSize,
+ cornerRadius: this.options.tooltipCornerRadius,
+ labels: tooltipLabels,
+ legendColors: tooltipColors,
+ legendColorBackground : this.options.multiTooltipKeyBackground,
+ title: ChartElements[0].label,
+ chart: this.chart,
+ ctx: this.chart.ctx
+ }).draw();
+
+ } else {
+ each(ChartElements, function(Element) {
+ var tooltipPosition = Element.tooltipPosition();
+ new Chart.Tooltip({
+ x: Math.round(tooltipPosition.x),
+ y: Math.round(tooltipPosition.y),
+ xPadding: this.options.tooltipXPadding,
+ yPadding: this.options.tooltipYPadding,
+ fillColor: this.options.tooltipFillColor,
+ textColor: this.options.tooltipFontColor,
+ fontFamily: this.options.tooltipFontFamily,
+ fontStyle: this.options.tooltipFontStyle,
+ fontSize: this.options.tooltipFontSize,
+ caretHeight: this.options.tooltipCaretSize,
+ cornerRadius: this.options.tooltipCornerRadius,
+ text: template(this.options.tooltipTemplate, Element),
+ chart: this.chart
+ }).draw();
+ }, this);
}
+ }
+ return this;
+ },
+ toBase64Image : function(){
+ return this.chart.canvas.toDataURL.apply(this.chart.canvas, arguments);
+ }
+ });
+
+ Chart.Type.extend = function(extensions){
+
+ var parent = this;
+
+ var ChartType = function(){
+ return parent.apply(this,arguments);
+ };
+
+ //Copy the prototype object of the this class
+ ChartType.prototype = clone(parent.prototype);
+ //Now overwrite some of the properties in the base class with the new extensions
+ extend(ChartType.prototype, extensions);
+
+ ChartType.extend = Chart.Type.extend;
+
+ if (extensions.name || parent.prototype.name){
+
+ var chartName = extensions.name || parent.prototype.name;
+ //Assign any potential default values of the new chart type
+
+ //If none are defined, we'll use a clone of the chart type this is being extended from.
+ //I.e. if we extend a line chart, we'll use the defaults from the line chart if our new chart
+ //doesn't define some defaults of their own.
+
+ var baseDefaults = (Chart.defaults[parent.prototype.name]) ? clone(Chart.defaults[parent.prototype.name]) : {};
+
+ Chart.defaults[chartName] = extend(baseDefaults,extensions.defaults);
+
+ Chart.types[chartName] = ChartType;
+
+ //Register this new chart type in the Chart prototype
+ Chart.prototype[chartName] = function(data,options){
+ var config = merge(Chart.defaults.global, Chart.defaults[chartName], options || {});
+ return new ChartType(data,config,this);
};
-
- var maxSteps = Math.floor((scaleHeight / (labelHeight*0.66)));
- var minSteps = Math.floor((scaleHeight / labelHeight*0.5));
-
+ } else{
+ warn("Name not provided for this chart, so it hasn't been registered");
+ }
+ return parent;
+ };
+
+ Chart.Element = function(configuration){
+ extend(this,configuration);
+ this.initialize.apply(this,arguments);
+ this.save();
+ };
+ extend(Chart.Element.prototype,{
+ initialize : function(){},
+ restore : function(props){
+ if (!props){
+ extend(this,this._saved);
+ } else {
+ each(props,function(key){
+ this[key] = this._saved[key];
+ },this);
+ }
+ return this;
+ },
+ save : function(){
+ this._saved = clone(this);
+ delete this._saved._saved;
+ return this;
+ },
+ update : function(newProps){
+ each(newProps,function(value,key){
+ this._saved[key] = this[key];
+ this[key] = value;
+ },this);
+ return this;
+ },
+ transition : function(props,ease){
+ each(props,function(value,key){
+ this[key] = ((value - this._saved[key]) * ease) + this._saved[key];
+ },this);
+ return this;
+ },
+ tooltipPosition : function(){
return {
- maxValue : upperValue,
- minValue : lowerValue,
- maxSteps : maxSteps,
- minSteps : minSteps
+ x : this.x,
+ y : this.y
};
-
-
}
- }
-
- function calculateOffset(val,calculatedScale,scaleHop){
- var outerValue = calculatedScale.steps * calculatedScale.stepValue;
- var adjustedValue = val - calculatedScale.graphMin;
- var scalingFactor = CapValue(adjustedValue/outerValue,1,0);
- return (scaleHop*calculatedScale.steps) * scalingFactor;
- }
-
- function animationLoop(config,drawScale,drawData,ctx){
- var animFrameAmount = (config.animation)? 1/CapValue(config.animationSteps,Number.MAX_VALUE,1) : 1,
- easingFunction = animationOptions[config.animationEasing],
- percentAnimComplete =(config.animation)? 0 : 1;
-
-
-
- if (typeof drawScale !== "function") drawScale = function(){};
-
- requestAnimFrame(animLoop);
-
- function animateFrame(){
- var easeAdjustedAnimationPercent =(config.animation)? CapValue(easingFunction(percentAnimComplete),null,0) : 1;
- clear(ctx);
- if(config.scaleOverlay){
- drawData(easeAdjustedAnimationPercent);
- drawScale();
- } else {
- drawScale();
- drawData(easeAdjustedAnimationPercent);
- }
+ });
+
+ Chart.Element.extend = inherits;
+
+
+ Chart.Point = Chart.Element.extend({
+ inRange : function(chartX,chartY){
+ var hitDetectionRange = this.hitDetectionRadius + this.radius;
+ return ((Math.pow(chartX-this.x, 2)+Math.pow(chartY-this.y, 2)) < Math.pow(hitDetectionRange,2));
+ },
+ draw : function(){
+ var ctx = this.ctx;
+ ctx.beginPath();
+
+ ctx.arc(this.x, this.y, this.radius, 0, Math.PI*2);
+ ctx.closePath();
+
+ ctx.strokeStyle = this.strokeColor;
+ ctx.lineWidth = this.strokeWidth;
+
+ ctx.fillStyle = this.fillColor;
+
+ ctx.fill();
+ ctx.stroke();
+
+
+
+ //Quick debug for bezier curve splining
+ //Highlights control points and the line between them.
+ //Handy for dev - stripped in the min version.
+
+ // ctx.save();
+ // ctx.fillStyle = "black";
+ // ctx.strokeStyle = "black"
+ // ctx.beginPath();
+ // ctx.arc(this.controlPoints.inner.x,this.controlPoints.inner.y, 2, 0, Math.PI*2);
+ // ctx.fill();
+
+ // ctx.beginPath();
+ // ctx.arc(this.controlPoints.outer.x,this.controlPoints.outer.y, 2, 0, Math.PI*2);
+ // ctx.fill();
+
+ // ctx.moveTo(this.controlPoints.inner.x,this.controlPoints.inner.y);
+ // ctx.lineTo(this.controlPoints.outer.x,this.controlPoints.outer.y);
+ // ctx.stroke();
+
+ // ctx.restore();
+
+
+
}
- function animLoop(){
- //We need to check if the animation is incomplete (less than 1), or complete (1).
- percentAnimComplete += animFrameAmount;
- animateFrame();
- //Stop the loop continuing forever
- if (percentAnimComplete <= 1){
- requestAnimFrame(animLoop);
- }
- else{
- if (typeof config.onAnimationComplete == "function") config.onAnimationComplete();
- }
-
- }
-
- }
+ });
- //Declare global functions to be called within this namespace here.
-
-
- // shim layer with setTimeout fallback
- var requestAnimFrame = (function(){
- return window.requestAnimationFrame ||
- window.webkitRequestAnimationFrame ||
- window.mozRequestAnimationFrame ||
- window.oRequestAnimationFrame ||
- window.msRequestAnimationFrame ||
- function(callback) {
- window.setTimeout(callback, 1000 / 60);
+ Chart.Arc = Chart.Element.extend({
+ inRange : function(chartX,chartY){
+
+ var pointRelativePosition = helpers.getAngleFromPoint(this, {
+ x: chartX,
+ y: chartY
+ });
+
+ //Check if within the range of the open/close angle
+ var betweenAngles = (pointRelativePosition.angle >= this.startAngle && pointRelativePosition.angle <= this.endAngle),
+ withinRadius = (pointRelativePosition.distance >= this.innerRadius && pointRelativePosition.distance <= this.outerRadius);
+
+ return (betweenAngles && withinRadius);
+ //Ensure within the outside of the arc centre, but inside arc outer
+ },
+ tooltipPosition : function(){
+ var centreAngle = this.startAngle + ((this.endAngle - this.startAngle) / 2),
+ rangeFromCentre = (this.outerRadius - this.innerRadius) / 2 + this.innerRadius;
+ return {
+ x : this.x + (Math.cos(centreAngle) * rangeFromCentre),
+ y : this.y + (Math.sin(centreAngle) * rangeFromCentre)
};
- })();
-
- function calculateScale(drawingHeight,maxSteps,minSteps,maxValue,minValue,labelTemplateString){
- var graphMin,graphMax,graphRange,stepValue,numberOfSteps,valueRange,rangeOrderOfMagnitude,decimalNum;
-
- valueRange = maxValue - minValue;
-
- rangeOrderOfMagnitude = calculateOrderOfMagnitude(valueRange);
-
- graphMin = Math.floor(minValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude);
-
- graphMax = Math.ceil(maxValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude);
-
- graphRange = graphMax - graphMin;
-
- stepValue = Math.pow(10, rangeOrderOfMagnitude);
-
- numberOfSteps = Math.round(graphRange / stepValue);
-
- //Compare number of steps to the max and min for that size graph, and add in half steps if need be.
- while(numberOfSteps < minSteps || numberOfSteps > maxSteps) {
- if (numberOfSteps < minSteps){
- stepValue /= 2;
- numberOfSteps = Math.round(graphRange/stepValue);
- }
- else{
- stepValue *=2;
- numberOfSteps = Math.round(graphRange/stepValue);
- }
- };
-
- var labels = [];
- populateLabels(labelTemplateString, labels, numberOfSteps, graphMin, stepValue);
-
- return {
- steps : numberOfSteps,
- stepValue : stepValue,
- graphMin : graphMin,
- labels : labels
-
- }
-
- function calculateOrderOfMagnitude(val){
- return Math.floor(Math.log(val) / Math.LN10);
- }
+ },
+ draw : function(animationPercent){
+ var easingDecimal = animationPercent || 1;
- }
+ var ctx = this.ctx;
- //Populate an array of all the labels by interpolating the string.
- function populateLabels(labelTemplateString, labels, numberOfSteps, graphMin, stepValue) {
- if (labelTemplateString) {
- //Fix floating point errors by setting to fixed the on the same decimal as the stepValue.
- for (var i = 1; i < numberOfSteps + 1; i++) {
- labels.push(tmpl(labelTemplateString, {value: (graphMin + (stepValue * i)).toFixed(getDecimalPlaces(stepValue))}));
- }
- }
- }
-
- //Max value from array
- function Max( array ){
- return Math.max.apply( Math, array );
- };
- //Min value from array
- function Min( array ){
- return Math.min.apply( Math, array );
- };
- //Default if undefined
- function Default(userDeclared,valueIfFalse){
- if(!userDeclared){
- return valueIfFalse;
- } else {
- return userDeclared;
- }
- };
- //Is a number function
- function isNumber(n) {
- return !isNaN(parseFloat(n)) && isFinite(n);
- }
- //Apply cap a value at a high or low number
- function CapValue(valueToCap, maxValue, minValue){
- if(isNumber(maxValue)) {
- if( valueToCap > maxValue ) {
- return maxValue;
+ ctx.beginPath();
+
+ ctx.arc(this.x, this.y, this.outerRadius, this.startAngle, this.endAngle);
+
+ ctx.arc(this.x, this.y, this.innerRadius, this.endAngle, this.startAngle, true);
+
+ ctx.closePath();
+ ctx.strokeStyle = this.strokeColor;
+ ctx.lineWidth = this.strokeWidth;
+
+ ctx.fillStyle = this.fillColor;
+
+ ctx.fill();
+ ctx.lineJoin = 'bevel';
+
+ if (this.showStroke){
+ ctx.stroke();
}
}
- if(isNumber(minValue)){
- if ( valueToCap < minValue ){
- return minValue;
+ });
+
+ Chart.Rectangle = Chart.Element.extend({
+ draw : function(){
+ var ctx = this.ctx,
+ halfWidth = this.width/2,
+ leftX = this.x - halfWidth,
+ rightX = this.x + halfWidth,
+ top = this.base - (this.base - this.y),
+ halfStroke = this.strokeWidth / 2;
+
+ // Canvas doesn't allow us to stroke inside the width so we can
+ // adjust the sizes to fit if we're setting a stroke on the line
+ if (this.showStroke){
+ leftX += halfStroke;
+ rightX -= halfStroke;
+ top += halfStroke;
}
+
+ ctx.beginPath();
+
+ ctx.fillStyle = this.fillColor;
+ ctx.strokeStyle = this.strokeColor;
+ ctx.lineWidth = this.strokeWidth;
+
+ // It'd be nice to keep this class totally generic to any rectangle
+ // and simply specify which border to miss out.
+ ctx.moveTo(leftX, this.base);
+ ctx.lineTo(leftX, top);
+ ctx.lineTo(rightX, top);
+ ctx.lineTo(rightX, this.base);
+ ctx.fill();
+ if (this.showStroke){
+ ctx.stroke();
+ }
+ },
+ height : function(){
+ return this.base - this.y;
+ },
+ inRange : function(chartX,chartY){
+ return (chartX >= this.x - this.width/2 && chartX <= this.x + this.width/2) && (chartY >= this.y && chartY <= this.base);
}
- return valueToCap;
- }
- function getDecimalPlaces (num){
- var numberOfDecimalPlaces;
- if (num%1!=0){
- return num.toString().split(".")[1].length
- }
- else{
- return 0;
+ });
+
+ Chart.Tooltip = Chart.Element.extend({
+ draw : function(){
+
+ var ctx = this.chart.ctx;
+
+ ctx.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);
+
+ this.xAlign = "center";
+ this.yAlign = "above";
+
+ //Distance between the actual element.y position and the start of the tooltip caret
+ var caretPadding = 2;
+
+ var tooltipWidth = ctx.measureText(this.text).width + 2*this.xPadding,
+ tooltipRectHeight = this.fontSize + 2*this.yPadding,
+ tooltipHeight = tooltipRectHeight + this.caretHeight + caretPadding;
+
+ if (this.x + tooltipWidth/2 >this.chart.width){
+ this.xAlign = "left";
+ } else if (this.x - tooltipWidth/2 < 0){
+ this.xAlign = "right";
+ }
+
+ if (this.y - tooltipHeight < 0){
+ this.yAlign = "below";
+ }
+
+
+ var tooltipX = this.x - tooltipWidth/2,
+ tooltipY = this.y - tooltipHeight;
+
+ ctx.fillStyle = this.fillColor;
+
+ switch(this.yAlign)
+ {
+ case "above":
+ //Draw a caret above the x/y
+ ctx.beginPath();
+ ctx.moveTo(this.x,this.y - caretPadding);
+ ctx.lineTo(this.x + this.caretHeight, this.y - (caretPadding + this.caretHeight));
+ ctx.lineTo(this.x - this.caretHeight, this.y - (caretPadding + this.caretHeight));
+ ctx.closePath();
+ ctx.fill();
+ break;
+ case "below":
+ tooltipY = this.y + caretPadding + this.caretHeight;
+ //Draw a caret below the x/y
+ ctx.beginPath();
+ ctx.moveTo(this.x, this.y + caretPadding);
+ ctx.lineTo(this.x + this.caretHeight, this.y + caretPadding + this.caretHeight);
+ ctx.lineTo(this.x - this.caretHeight, this.y + caretPadding + this.caretHeight);
+ ctx.closePath();
+ ctx.fill();
+ break;
+ }
+
+ switch(this.xAlign)
+ {
+ case "left":
+ tooltipX = this.x - tooltipWidth + (this.cornerRadius + this.caretHeight);
+ break;
+ case "right":
+ tooltipX = this.x - (this.cornerRadius + this.caretHeight);
+ break;
+ }
+
+ drawRoundedRectangle(ctx,tooltipX,tooltipY,tooltipWidth,tooltipRectHeight,this.cornerRadius);
+
+ ctx.fill();
+
+ ctx.fillStyle = this.textColor;
+ ctx.textAlign = "center";
+ ctx.textBaseline = "middle";
+ ctx.fillText(this.text, tooltipX + tooltipWidth/2, tooltipY + tooltipRectHeight/2);
}
-
- }
-
- function mergeChartConfig(defaults,userDefined){
- var returnObj = {};
- for (var attrname in defaults) { returnObj[attrname] = defaults[attrname]; }
- for (var attrname in userDefined) { returnObj[attrname] = userDefined[attrname]; }
- return returnObj;
- }
-
- //Javascript micro templating by John Resig - source at http://ejohn.org/blog/javascript-micro-templating/
- var cache = {};
-
- function tmpl(str, data){
- // Figure out if we're getting a template, or if we need to
- // load the template - and be sure to cache the result.
- var fn = !/\W/.test(str) ?
- cache[str] = cache[str] ||
- tmpl(document.getElementById(str).innerHTML) :
-
- // Generate a reusable function that will serve as a template
- // generator (and which will be cached).
- new Function("obj",
- "var p=[],print=function(){p.push.apply(p,arguments);};" +
-
- // Introduce the data as local variables using with(){}
- "with(obj){p.push('" +
-
- // Convert the template into pure JavaScript
- str
- .replace(/[\r\t\n]/g, " ")
- .split("<%").join("\t")
- .replace(/((^|%>)[^\t]*)'/g, "$1\r")
- .replace(/\t=(.*?)%>/g, "',$1,'")
- .split("\t").join("');")
- .split("%>").join("p.push('")
- .split("\r").join("\\'")
- + "');}return p.join('');");
-
- // Provide some basic currying to the user
- return data ? fn( data ) : fn;
- };
-}
+ });
+
+ Chart.MultiTooltip = Chart.Element.extend({
+ initialize : function(){
+ this.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);
+
+ this.titleFont = fontString(this.titleFontSize,this.titleFontStyle,this.titleFontFamily);
+
+ this.height = (this.labels.length * this.fontSize) + ((this.labels.length-1) * (this.fontSize/2)) + (this.yPadding*2) + this.titleFontSize *1.5;
+
+ this.ctx.font = this.titleFont;
+
+ var titleWidth = this.ctx.measureText(this.title).width,
+ //Label has a legend square as well so account for this.
+ labelWidth = longestText(this.ctx,this.font,this.labels) + this.fontSize + 3,
+ longestTextWidth = max([labelWidth,titleWidth]);
+
+ this.width = longestTextWidth + (this.xPadding*2);
+
+
+ var halfHeight = this.height/2;
+
+ //Check to ensure the height will fit on the canvas
+ //The three is to buffer form the very
+ if (this.y - halfHeight < 0 ){
+ this.y = halfHeight;
+ } else if (this.y + halfHeight > this.chart.height){
+ this.y = this.chart.height - halfHeight;
+ }
+
+ //Decide whether to align left or right based on position on canvas
+ if (this.x > this.chart.width/2){
+ this.x -= this.xOffset + this.width;
+ } else {
+ this.x += this.xOffset;
+ }
+
+
+ },
+ getLineHeight : function(index){
+ var baseLineHeight = this.y - (this.height/2) + this.yPadding,
+ afterTitleIndex = index-1;
+
+ //If the index is zero, we're getting the title
+ if (index === 0){
+ return baseLineHeight + this.titleFontSize/2;
+ } else{
+ return baseLineHeight + ((this.fontSize*1.5*afterTitleIndex) + this.fontSize/2) + this.titleFontSize * 1.5;
+ }
+
+ },
+ draw : function(){
+ drawRoundedRectangle(this.ctx,this.x,this.y - this.height/2,this.width,this.height,this.cornerRadius);
+ var ctx = this.ctx;
+ ctx.fillStyle = this.fillColor;
+ ctx.fill();
+ ctx.closePath();
+
+ ctx.textAlign = "left";
+ ctx.textBaseline = "middle";
+ ctx.fillStyle = this.titleTextColor;
+ ctx.font = this.titleFont;
+
+ ctx.fillText(this.title,this.x + this.xPadding, this.getLineHeight(0));
+
+ ctx.font = this.font;
+ helpers.each(this.labels,function(label,index){
+ ctx.fillStyle = this.textColor;
+ ctx.fillText(label,this.x + this.xPadding + this.fontSize + 3, this.getLineHeight(index + 1));
+
+ //A bit gnarly, but clearing this rectangle breaks when using explorercanvas (clears whole canvas)
+ //ctx.clearRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);
+ //Instead we'll make a white filled block to put the legendColour palette over.
+
+ ctx.fillStyle = this.legendColorBackground;
+ ctx.fillRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);
+
+ ctx.fillStyle = this.legendColors[index].fill;
+ ctx.fillRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);
+
+
+ },this);
+ }
+ });
+
+ Chart.Scale = Chart.Element.extend({
+ initialize : function(){
+ this.fit();
+ },
+ buildYLabels : function(){
+ this.yLabels = [];
+
+ var stepDecimalPlaces = getDecimalPlaces(this.stepValue);
+
+ for (var i=0; i<=this.steps; i++){
+ this.yLabels.push(template(this.templateString,{value:(this.min + (i * this.stepValue)).toFixed(stepDecimalPlaces)}));
+ }
+ this.yLabelWidth = (this.display && this.showLabels) ? longestText(this.ctx,this.font,this.yLabels) : 0;
+ },
+ addXLabel : function(label){
+ this.xLabels.push(label);
+ this.valuesCount++;
+ this.fit();
+ },
+ removeXLabel : function(){
+ this.xLabels.shift();
+ this.valuesCount--;
+ this.fit();
+ },
+ // Fitting loop to rotate x Labels and figure out what fits there, and also calculate how many Y steps to use
+ fit: function(){
+ // First we need the width of the yLabels, assuming the xLabels aren't rotated
+
+ // To do that we need the base line at the top and base of the chart, assuming there is no x label rotation
+ this.startPoint = (this.display) ? this.fontSize : 0;
+ this.endPoint = (this.display) ? this.height - (this.fontSize * 1.5) - 5 : this.height; // -5 to pad labels
+
+ // Apply padding settings to the start and end point.
+ this.startPoint += this.padding;
+ this.endPoint -= this.padding;
+
+ // Cache the starting height, so can determine if we need to recalculate the scale yAxis
+ var cachedHeight = this.endPoint - this.startPoint,
+ cachedYLabelWidth;
+
+ // Build the current yLabels so we have an idea of what size they'll be to start
+ /*
+ * This sets what is returned from calculateScaleRange as static properties of this class:
+ *
+ this.steps;
+ this.stepValue;
+ this.min;
+ this.max;
+ *
+ */
+ this.calculateYRange(cachedHeight);
+
+ // With these properties set we can now build the array of yLabels
+ // and also the width of the largest yLabel
+ this.buildYLabels();
+
+ this.calculateXLabelRotation();
+
+ while((cachedHeight > this.endPoint - this.startPoint)){
+ cachedHeight = this.endPoint - this.startPoint;
+ cachedYLabelWidth = this.yLabelWidth;
+
+ this.calculateYRange(cachedHeight);
+ this.buildYLabels();
+
+ // Only go through the xLabel loop again if the yLabel width has changed
+ if (cachedYLabelWidth < this.yLabelWidth){
+ this.calculateXLabelRotation();
+ }
+ }
+
+ },
+ calculateXLabelRotation : function(){
+ //Get the width of each grid by calculating the difference
+ //between x offsets between 0 and 1.
+
+ this.ctx.font = this.font;
+
+ var firstWidth = this.ctx.measureText(this.xLabels[0]).width,
+ lastWidth = this.ctx.measureText(this.xLabels[this.xLabels.length - 1]).width,
+ firstRotated,
+ lastRotated;
+
+
+ this.xScalePaddingRight = lastWidth/2 + 3;
+ this.xScalePaddingLeft = (firstWidth/2 > this.yLabelWidth + 10) ? firstWidth/2 : this.yLabelWidth + 10;
+
+ this.xLabelRotation = 0;
+ if (this.display){
+ var originalLabelWidth = longestText(this.ctx,this.font,this.xLabels),
+ cosRotation,
+ firstRotatedWidth;
+ this.xLabelWidth = originalLabelWidth;
+ //Allow 3 pixels x2 padding either side for label readability
+ var xGridWidth = Math.floor(this.calculateX(1) - this.calculateX(0)) - 6;
+
+ //Max label rotate should be 90 - also act as a loop counter
+ while ((this.xLabelWidth > xGridWidth && this.xLabelRotation === 0) || (this.xLabelWidth > xGridWidth && this.xLabelRotation <= 90 && this.xLabelRotation > 0)){
+ cosRotation = Math.cos(toRadians(this.xLabelRotation));
+
+ firstRotated = cosRotation * firstWidth;
+ lastRotated = cosRotation * lastWidth;
+
+ // We're right aligning the text now.
+ if (firstRotated + this.fontSize / 2 > this.yLabelWidth + 8){
+ this.xScalePaddingLeft = firstRotated + this.fontSize / 2;
+ }
+ this.xScalePaddingRight = this.fontSize/2;
+
+
+ this.xLabelRotation++;
+ this.xLabelWidth = cosRotation * originalLabelWidth;
+
+ }
+ if (this.xLabelRotation > 0){
+ this.endPoint -= Math.sin(toRadians(this.xLabelRotation))*originalLabelWidth + 3;
+ }
+ }
+ else{
+ this.xLabelWidth = 0;
+ this.xScalePaddingRight = this.padding;
+ this.xScalePaddingLeft = this.padding;
+ }
+
+ },
+ // Needs to be overidden in each Chart type
+ // Otherwise we need to pass all the data into the scale class
+ calculateYRange: noop,
+ drawingArea: function(){
+ return this.startPoint - this.endPoint;
+ },
+ calculateY : function(value){
+ var scalingFactor = this.drawingArea() / (this.min - this.max);
+ return this.endPoint - (scalingFactor * (value - this.min));
+ },
+ calculateX : function(index){
+ var isRotated = (this.xLabelRotation > 0),
+ // innerWidth = (this.offsetGridLines) ? this.width - offsetLeft - this.padding : this.width - (offsetLeft + halfLabelWidth * 2) - this.padding,
+ innerWidth = this.width - (this.xScalePaddingLeft + this.xScalePaddingRight),
+ valueWidth = innerWidth/(this.valuesCount - ((this.offsetGridLines) ? 0 : 1)),
+ valueOffset = (valueWidth * index) + this.xScalePaddingLeft;
+
+ if (this.offsetGridLines){
+ valueOffset += (valueWidth/2);
+ }
+
+ return Math.round(valueOffset);
+ },
+ update : function(newProps){
+ helpers.extend(this, newProps);
+ this.fit();
+ },
+ draw : function(){
+ var ctx = this.ctx,
+ yLabelGap = (this.endPoint - this.startPoint) / this.steps,
+ xStart = Math.round(this.xScalePaddingLeft);
+ if (this.display){
+ ctx.fillStyle = this.textColor;
+ ctx.font = this.font;
+ each(this.yLabels,function(labelString,index){
+ var yLabelCenter = this.endPoint - (yLabelGap * index),
+ linePositionY = Math.round(yLabelCenter);
+
+ ctx.textAlign = "right";
+ ctx.textBaseline = "middle";
+ if (this.showLabels){
+ ctx.fillText(labelString,xStart - 10,yLabelCenter);
+ }
+ ctx.beginPath();
+ if (index > 0){
+ // This is a grid line in the centre, so drop that
+ ctx.lineWidth = this.gridLineWidth;
+ ctx.strokeStyle = this.gridLineColor;
+ } else {
+ // This is the first line on the scale
+ ctx.lineWidth = this.lineWidth;
+ ctx.strokeStyle = this.lineColor;
+ }
+
+ linePositionY += helpers.aliasPixel(ctx.lineWidth);
+
+ ctx.moveTo(xStart, linePositionY);
+ ctx.lineTo(this.width, linePositionY);
+ ctx.stroke();
+ ctx.closePath();
+
+ ctx.lineWidth = this.lineWidth;
+ ctx.strokeStyle = this.lineColor;
+ ctx.beginPath();
+ ctx.moveTo(xStart - 5, linePositionY);
+ ctx.lineTo(xStart, linePositionY);
+ ctx.stroke();
+ ctx.closePath();
+
+ },this);
+
+ each(this.xLabels,function(label,index){
+ var xPos = this.calculateX(index) + aliasPixel(this.lineWidth),
+ // Check to see if line/bar here and decide where to place the line
+ linePos = this.calculateX(index - (this.offsetGridLines ? 0.5 : 0)) + aliasPixel(this.lineWidth),
+ isRotated = (this.xLabelRotation > 0);
+
+ ctx.beginPath();
+
+ if (index > 0){
+ // This is a grid line in the centre, so drop that
+ ctx.lineWidth = this.gridLineWidth;
+ ctx.strokeStyle = this.gridLineColor;
+ } else {
+ // This is the first line on the scale
+ ctx.lineWidth = this.lineWidth;
+ ctx.strokeStyle = this.lineColor;
+ }
+ ctx.moveTo(linePos,this.endPoint);
+ ctx.lineTo(linePos,this.startPoint - 3);
+ ctx.stroke();
+ ctx.closePath();
+
+
+ ctx.lineWidth = this.lineWidth;
+ ctx.strokeStyle = this.lineColor;
+
+
+ // Small lines at the bottom of the base grid line
+ ctx.beginPath();
+ ctx.moveTo(linePos,this.endPoint);
+ ctx.lineTo(linePos,this.endPoint + 5);
+ ctx.stroke();
+ ctx.closePath();
+
+ ctx.save();
+ ctx.translate(xPos,(isRotated) ? this.endPoint + 12 : this.endPoint + 8);
+ ctx.rotate(toRadians(this.xLabelRotation)*-1);
+ ctx.font = this.font;
+ ctx.textAlign = (isRotated) ? "right" : "center";
+ ctx.textBaseline = (isRotated) ? "middle" : "top";
+ ctx.fillText(label, 0, 0);
+ ctx.restore();
+ },this);
+
+ }
+ }
+
+ });
+
+ Chart.RadialScale = Chart.Element.extend({
+ initialize: function(){
+ this.size = min([this.height, this.width]);
+ this.drawingArea = (this.display) ? (this.size/2) - (this.fontSize/2 + this.backdropPaddingY) : (this.size/2);
+ },
+ calculateCenterOffset: function(value){
+ // Take into account half font size + the yPadding of the top value
+ var scalingFactor = this.drawingArea / (this.max - this.min);
+
+ return (value - this.min) * scalingFactor;
+ },
+ update : function(){
+ if (!this.lineArc){
+ this.setScaleSize();
+ } else {
+ this.drawingArea = (this.display) ? (this.size/2) - (this.fontSize/2 + this.backdropPaddingY) : (this.size/2);
+ }
+ this.buildYLabels();
+ },
+ buildYLabels: function(){
+ this.yLabels = [];
+
+ var stepDecimalPlaces = getDecimalPlaces(this.stepValue);
+
+ for (var i=0; i<=this.steps; i++){
+ this.yLabels.push(template(this.templateString,{value:(this.min + (i * this.stepValue)).toFixed(stepDecimalPlaces)}));
+ }
+ },
+ getCircumference : function(){
+ return ((Math.PI*2) / this.valuesCount);
+ },
+ setScaleSize: function(){
+ /*
+ * 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
+ */
+
+
+ // 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 largestPossibleRadius = min([(this.height/2 - this.pointLabelFontSize - 5), this.width/2]),
+ pointPosition,
+ i,
+ textWidth,
+ halfTextWidth,
+ furthestRight = this.width,
+ furthestRightIndex,
+ furthestRightAngle,
+ furthestLeft = 0,
+ furthestLeftIndex,
+ furthestLeftAngle,
+ xProtrusionLeft,
+ xProtrusionRight,
+ radiusReductionRight,
+ radiusReductionLeft,
+ maxWidthRadius;
+ this.ctx.font = fontString(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily);
+ for (i=0;i<this.valuesCount;i++){
+ // 5px to space the text slightly out - similar to what we do in the draw function.
+ pointPosition = this.getPointPosition(i, largestPossibleRadius);
+ textWidth = this.ctx.measureText(template(this.templateString, { value: this.labels[i] })).width + 5;
+ if (i === 0 || i === this.valuesCount/2){
+ // If we're at index zero, or exactly the middle, we're at exactly the top/bottom
+ // of the radar chart, so text will be aligned centrally, so we'll half it and compare
+ // w/left and right text sizes
+ halfTextWidth = textWidth/2;
+ if (pointPosition.x + halfTextWidth > furthestRight) {
+ furthestRight = pointPosition.x + halfTextWidth;
+ furthestRightIndex = i;
+ }
+ if (pointPosition.x - halfTextWidth < furthestLeft) {
+ furthestLeft = pointPosition.x - halfTextWidth;
+ furthestLeftIndex = i;
+ }
+ }
+ else if (i < this.valuesCount/2) {
+ // Less than half the values means we'll left align the text
+ if (pointPosition.x + textWidth > furthestRight) {
+ furthestRight = pointPosition.x + textWidth;
+ furthestRightIndex = i;
+ }
+ }
+ else if (i > this.valuesCount/2){
+ // More than half the values means we'll right align the text
+ if (pointPosition.x - textWidth < furthestLeft) {
+ furthestLeft = pointPosition.x - textWidth;
+ furthestLeftIndex = i;
+ }
+ }
+ }
+
+ xProtrusionLeft = furthestLeft;
+
+ xProtrusionRight = Math.ceil(furthestRight - this.width);
+
+ furthestRightAngle = this.getIndexAngle(furthestRightIndex);
+
+ furthestLeftAngle = this.getIndexAngle(furthestLeftIndex);
+
+ radiusReductionRight = xProtrusionRight / Math.sin(furthestRightAngle + Math.PI/2);
+
+ radiusReductionLeft = xProtrusionLeft / Math.sin(furthestLeftAngle + Math.PI/2);
+
+ // Ensure we actually need to reduce the size of the chart
+ radiusReductionRight = (isNumber(radiusReductionRight)) ? radiusReductionRight : 0;
+ radiusReductionLeft = (isNumber(radiusReductionLeft)) ? radiusReductionLeft : 0;
+
+ this.drawingArea = largestPossibleRadius - (radiusReductionLeft + radiusReductionRight)/2;
+
+ //this.drawingArea = min([maxWidthRadius, (this.height - (2 * (this.pointLabelFontSize + 5)))/2])
+ this.setCenterPoint(radiusReductionLeft, radiusReductionRight);
+
+ },
+ setCenterPoint: function(leftMovement, rightMovement){
+
+ var maxRight = this.width - rightMovement - this.drawingArea,
+ maxLeft = leftMovement + this.drawingArea;
+
+ this.xCenter = (maxLeft + maxRight)/2;
+ // Always vertically in the centre as the text height doesn't change
+ this.yCenter = (this.height/2);
+ },
+
+ getIndexAngle : function(index){
+ var angleMultiplier = (Math.PI * 2) / this.valuesCount;
+ // Start from the top instead of right, so remove a quarter of the circle
+
+ return index * angleMultiplier - (Math.PI/2);
+ },
+ getPointPosition : function(index, distanceFromCenter){
+ var thisAngle = this.getIndexAngle(index);
+ return {
+ x : (Math.cos(thisAngle) * distanceFromCenter) + this.xCenter,
+ y : (Math.sin(thisAngle) * distanceFromCenter) + this.yCenter
+ };
+ },
+ draw: function(){
+ if (this.display){
+ var ctx = this.ctx;
+ each(this.yLabels, function(label, index){
+ // Don't draw a centre value
+ if (index > 0){
+ var yCenterOffset = index * (this.drawingArea/this.steps),
+ yHeight = this.yCenter - yCenterOffset,
+ pointPosition;
+
+ // Draw circular lines around the scale
+ if (this.lineWidth > 0){
+ ctx.strokeStyle = this.lineColor;
+ ctx.lineWidth = this.lineWidth;
+
+ if(this.lineArc){
+ ctx.beginPath();
+ ctx.arc(this.xCenter, this.yCenter, yCenterOffset, 0, Math.PI*2);
+ ctx.closePath();
+ ctx.stroke();
+ } else{
+ ctx.beginPath();
+ for (var i=0;i<this.valuesCount;i++)
+ {
+ pointPosition = this.getPointPosition(i, this.calculateCenterOffset(this.min + (index * this.stepValue)));
+ if (i === 0){
+ ctx.moveTo(pointPosition.x, pointPosition.y);
+ } else {
+ ctx.lineTo(pointPosition.x, pointPosition.y);
+ }
+ }
+ ctx.closePath();
+ ctx.stroke();
+ }
+ }
+ if(this.showLabels){
+ ctx.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);
+ if (this.showLabelBackdrop){
+ var labelWidth = ctx.measureText(label).width;
+ ctx.fillStyle = this.backdropColor;
+ ctx.fillRect(
+ this.xCenter - labelWidth/2 - this.backdropPaddingX,
+ yHeight - this.fontSize/2 - this.backdropPaddingY,
+ labelWidth + this.backdropPaddingX*2,
+ this.fontSize + this.backdropPaddingY*2
+ );
+ }
+ ctx.textAlign = 'center';
+ ctx.textBaseline = "middle";
+ ctx.fillStyle = this.fontColor;
+ ctx.fillText(label, this.xCenter, yHeight);
+ }
+ }
+ }, this);
+
+ if (!this.lineArc){
+ ctx.lineWidth = this.angleLineWidth;
+ ctx.strokeStyle = this.angleLineColor;
+ for (var i = this.valuesCount - 1; i >= 0; i--) {
+ if (this.angleLineWidth > 0){
+ var outerPosition = this.getPointPosition(i, this.calculateCenterOffset(this.max));
+ ctx.beginPath();
+ ctx.moveTo(this.xCenter, this.yCenter);
+ ctx.lineTo(outerPosition.x, outerPosition.y);
+ ctx.stroke();
+ ctx.closePath();
+ }
+ // Extra 3px out for some label spacing
+ var pointLabelPosition = this.getPointPosition(i, this.calculateCenterOffset(this.max) + 5);
+ ctx.font = fontString(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily);
+ ctx.fillStyle = this.pointLabelFontColor;
+
+ var labelsCount = this.labels.length,
+ halfLabelsCount = this.labels.length/2,
+ quarterLabelsCount = halfLabelsCount/2,
+ upperHalf = (i < quarterLabelsCount || i > labelsCount - quarterLabelsCount),
+ exactQuarter = (i === quarterLabelsCount || i === labelsCount - quarterLabelsCount);
+ if (i === 0){
+ ctx.textAlign = 'center';
+ } else if(i === halfLabelsCount){
+ ctx.textAlign = 'center';
+ } else if (i < halfLabelsCount){
+ ctx.textAlign = 'left';
+ } else {
+ ctx.textAlign = 'right';
+ }
+
+ // Set the correct text baseline based on outer positioning
+ if (exactQuarter){
+ ctx.textBaseline = 'middle';
+ } else if (upperHalf){
+ ctx.textBaseline = 'bottom';
+ } else {
+ ctx.textBaseline = 'top';
+ }
+
+ ctx.fillText(this.labels[i], pointLabelPosition.x, pointLabelPosition.y);
+ }
+ }
+ }
+ }
+ });
+
+ // Attach global event to resize each chart instance when the browser resizes
+ helpers.addEvent(window, "resize", (function(){
+ // Basic debounce of resize function so it doesn't hurt performance when resizing browser.
+ var timeout;
+ return function(){
+ clearTimeout(timeout);
+ timeout = setTimeout(function(){
+ each(Chart.instances,function(instance){
+ // If the responsive flag is set in the chart instance config
+ // Cascade the resize event down to the chart.
+ if (instance.options.responsive){
+ instance.resize(instance.render, true);
+ }
+ });
+ }, 50);
+ };
+ })());
+
+
+ if (amd) {
+ define(function(){
+ return Chart;
+ });
+ }
+
+ root.Chart = Chart;
+
+ Chart.noConflict = function(){
+ root.Chart = previous;
+ return Chart;
+ };
+
+}).call(this);
+(function(){
+ "use strict";
+
+ var root = this,
+ Chart = root.Chart,
+ helpers = Chart.helpers;
+
+
+ var defaultConfig = {
+ //Boolean - Whether the scale should start at zero, or an order of magnitude down from the lowest value
+ scaleBeginAtZero : true,
+
+ //Boolean - Whether grid lines are shown across the chart
+ scaleShowGridLines : true,
+
+ //String - Colour of the grid lines
+ scaleGridLineColor : "rgba(0,0,0,.05)",
+
+ //Number - Width of the grid lines
+ scaleGridLineWidth : 1,
+
+ //Boolean - If there is a stroke on each bar
+ barShowStroke : true,
+
+ //Number - Pixel width of the bar stroke
+ barStrokeWidth : 2,
+
+ //Number - Spacing between each of the X value sets
+ barValueSpacing : 5,
+
+ //Number - Spacing between data sets within X values
+ barDatasetSpacing : 1,
+
+ //String - A legend template
+ legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].fillColor%>\"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>"
+
+ };
+
+
+ Chart.Type.extend({
+ name: "Bar",
+ defaults : defaultConfig,
+ initialize: function(data){
+
+ //Expose options as a scope variable here so we can access it in the ScaleClass
+ var options = this.options;
+
+ this.ScaleClass = Chart.Scale.extend({
+ offsetGridLines : true,
+ calculateBarX : function(datasetCount, datasetIndex, barIndex){
+ //Reusable method for calculating the xPosition of a given bar based on datasetIndex & width of the bar
+ var xWidth = this.calculateBaseWidth(),
+ xAbsolute = this.calculateX(barIndex) - (xWidth/2),
+ barWidth = this.calculateBarWidth(datasetCount);
+
+ return xAbsolute + (barWidth * datasetIndex) + (datasetIndex * options.barDatasetSpacing) + barWidth/2;
+ },
+ calculateBaseWidth : function(){
+ return (this.calculateX(1) - this.calculateX(0)) - (2*options.barValueSpacing);
+ },
+ calculateBarWidth : function(datasetCount){
+ //The padding between datasets is to the right of each bar, providing that there are more than 1 dataset
+ var baseWidth = this.calculateBaseWidth() - ((datasetCount - 1) * options.barDatasetSpacing);
+
+ return (baseWidth / datasetCount);
+ }
+ });
+
+ this.datasets = [];
+
+ //Set up tooltip events on the chart
+ if (this.options.showTooltips){
+ helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
+ var activeBars = (evt.type !== 'mouseout') ? this.getBarsAtEvent(evt) : [];
+
+ this.eachBars(function(bar){
+ bar.restore(['fillColor', 'strokeColor']);
+ });
+ helpers.each(activeBars, function(activeBar){
+ activeBar.fillColor = activeBar.highlightFill;
+ activeBar.strokeColor = activeBar.highlightStroke;
+ });
+ this.showTooltip(activeBars);
+ });
+ }
+
+ //Declare the extension of the default point, to cater for the options passed in to the constructor
+ this.BarClass = Chart.Rectangle.extend({
+ strokeWidth : this.options.barStrokeWidth,
+ showStroke : this.options.barShowStroke,
+ ctx : this.chart.ctx
+ });
+
+ //Iterate through each of the datasets, and build this into a property of the chart
+ helpers.each(data.datasets,function(dataset,datasetIndex){
+
+ var datasetObject = {
+ label : dataset.label || null,
+ fillColor : dataset.fillColor,
+ strokeColor : dataset.strokeColor,
+ bars : []
+ };
+
+ this.datasets.push(datasetObject);
+
+ helpers.each(dataset.data,function(dataPoint,index){
+ if (helpers.isNumber(dataPoint)){
+ //Add a new point for each piece of data, passing any required data to draw.
+ datasetObject.bars.push(new this.BarClass({
+ value : dataPoint,
+ label : data.labels[index],
+ strokeColor : dataset.strokeColor,
+ fillColor : dataset.fillColor,
+ highlightFill : dataset.highlightFill || dataset.fillColor,
+ highlightStroke : dataset.highlightStroke || dataset.strokeColor
+ }));
+ }
+ },this);
+
+ },this);
+
+ this.buildScale(data.labels);
+
+ this.BarClass.prototype.base = this.scale.endPoint;
+
+ this.eachBars(function(bar, index, datasetIndex){
+ helpers.extend(bar, {
+ width : this.scale.calculateBarWidth(this.datasets.length),
+ x: this.scale.calculateBarX(this.datasets.length, datasetIndex, index),
+ y: this.scale.endPoint
+ });
+ bar.save();
+ }, this);
+
+ this.render();
+ },
+ update : function(){
+ this.scale.update();
+ // Reset any highlight colours before updating.
+ helpers.each(this.activeElements, function(activeElement){
+ activeElement.restore(['fillColor', 'strokeColor']);
+ });
+
+ this.eachBars(function(bar){
+ bar.save();
+ });
+ this.render();
+ },
+ eachBars : function(callback){
+ helpers.each(this.datasets,function(dataset, datasetIndex){
+ helpers.each(dataset.bars, callback, this, datasetIndex);
+ },this);
+ },
+ getBarsAtEvent : function(e){
+ var barsArray = [],
+ eventPosition = helpers.getRelativePosition(e),
+ datasetIterator = function(dataset){
+ barsArray.push(dataset.bars[barIndex]);
+ },
+ barIndex;
+
+ for (var datasetIndex = 0; datasetIndex < this.datasets.length; datasetIndex++) {
+ for (barIndex = 0; barIndex < this.datasets[datasetIndex].bars.length; barIndex++) {
+ if (this.datasets[datasetIndex].bars[barIndex].inRange(eventPosition.x,eventPosition.y)){
+ helpers.each(this.datasets, datasetIterator);
+ return barsArray;
+ }
+ }
+ }
+
+ return barsArray;
+ },
+ buildScale : function(labels){
+ var self = this;
+
+ var dataTotal = function(){
+ var values = [];
+ self.eachBars(function(bar){
+ values.push(bar.value);
+ });
+ return values;
+ };
+
+ var scaleOptions = {
+ templateString : this.options.scaleLabel,
+ height : this.chart.height,
+ width : this.chart.width,
+ ctx : this.chart.ctx,
+ textColor : this.options.scaleFontColor,
+ fontSize : this.options.scaleFontSize,
+ fontStyle : this.options.scaleFontStyle,
+ fontFamily : this.options.scaleFontFamily,
+ valuesCount : labels.length,
+ beginAtZero : this.options.scaleBeginAtZero,
+ integersOnly : this.options.scaleIntegersOnly,
+ calculateYRange: function(currentHeight){
+ var updatedRanges = helpers.calculateScaleRange(
+ dataTotal(),
+ currentHeight,
+ this.fontSize,
+ this.beginAtZero,
+ this.integersOnly
+ );
+ helpers.extend(this, updatedRanges);
+ },
+ xLabels : labels,
+ font : helpers.fontString(this.options.scaleFontSize, this.options.scaleFontStyle, this.options.scaleFontFamily),
+ lineWidth : this.options.scaleLineWidth,
+ lineColor : this.options.scaleLineColor,
+ gridLineWidth : (this.options.scaleShowGridLines) ? this.options.scaleGridLineWidth : 0,
+ gridLineColor : (this.options.scaleShowGridLines) ? this.options.scaleGridLineColor : "rgba(0,0,0,0)",
+ padding : (this.options.showScale) ? 0 : (this.options.barShowStroke) ? this.options.barStrokeWidth : 0,
+ showLabels : this.options.scaleShowLabels,
+ display : this.options.showScale
+ };
+
+ if (this.options.scaleOverride){
+ helpers.extend(scaleOptions, {
+ calculateYRange: helpers.noop,
+ steps: this.options.scaleSteps,
+ stepValue: this.options.scaleStepWidth,
+ min: this.options.scaleStartValue,
+ max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
+ });
+ }
+
+ this.scale = new this.ScaleClass(scaleOptions);
+ },
+ addData : function(valuesArray,label){
+ //Map the values array for each of the datasets
+ helpers.each(valuesArray,function(value,datasetIndex){
+ if (helpers.isNumber(value)){
+ //Add a new point for each piece of data, passing any required data to draw.
+ this.datasets[datasetIndex].bars.push(new this.BarClass({
+ value : value,
+ label : label,
+ x: this.scale.calculateBarX(this.datasets.length, datasetIndex, this.scale.valuesCount+1),
+ y: this.scale.endPoint,
+ width : this.scale.calculateBarWidth(this.datasets.length),
+ base : this.scale.endPoint,
+ strokeColor : this.datasets[datasetIndex].strokeColor,
+ fillColor : this.datasets[datasetIndex].fillColor
+ }));
+ }
+ },this);
+
+ this.scale.addXLabel(label);
+ //Then re-render the chart.
+ this.update();
+ },
+ removeData : function(){
+ this.scale.removeXLabel();
+ //Then re-render the chart.
+ helpers.each(this.datasets,function(dataset){
+ dataset.bars.shift();
+ },this);
+ this.update();
+ },
+ reflow : function(){
+ helpers.extend(this.BarClass.prototype,{
+ y: this.scale.endPoint,
+ base : this.scale.endPoint
+ });
+ var newScaleProps = helpers.extend({
+ height : this.chart.height,
+ width : this.chart.width
+ });
+ this.scale.update(newScaleProps);
+ },
+ draw : function(ease){
+ var easingDecimal = ease || 1;
+ this.clear();
+
+ var ctx = this.chart.ctx;
+
+ this.scale.draw(easingDecimal);
+
+ //Draw all the bars for each dataset
+ helpers.each(this.datasets,function(dataset,datasetIndex){
+ helpers.each(dataset.bars,function(bar,index){
+ bar.base = this.scale.endPoint;
+ //Transition then draw
+ bar.transition({
+ x : this.scale.calculateBarX(this.datasets.length, datasetIndex, index),
+ y : this.scale.calculateY(bar.value),
+ width : this.scale.calculateBarWidth(this.datasets.length)
+ }, easingDecimal).draw();
+ },this);
+
+ },this);
+ }
+ });
+
+
+}).call(this);
+(function(){
+ "use strict";
+
+ var root = this,
+ Chart = root.Chart,
+ //Cache a local reference to Chart.helpers
+ helpers = Chart.helpers;
+
+ var defaultConfig = {
+ //Boolean - Whether we should show a stroke on each segment
+ segmentShowStroke : true,
+
+ //String - The colour of each segment stroke
+ segmentStrokeColor : "#fff",
+
+ //Number - The width of each segment stroke
+ segmentStrokeWidth : 2,
+
+ //The percentage of the chart that we cut out of the middle.
+ percentageInnerCutout : 50,
+
+ //Number - Amount of animation steps
+ animationSteps : 100,
+
+ //String - Animation easing effect
+ animationEasing : "easeOutBounce",
+
+ //Boolean - Whether we animate the rotation of the Doughnut
+ animateRotate : true,
+
+ //Boolean - Whether we animate scaling the Doughnut from the centre
+ animateScale : false,
+
+ //String - A legend template
+ legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span style=\"background-color:<%=segments[i].fillColor%>\"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>"
+
+ };
+
+
+ Chart.Type.extend({
+ //Passing in a name registers this chart in the Chart namespace
+ name: "Doughnut",
+ //Providing a defaults will also register the deafults in the chart namespace
+ defaults : defaultConfig,
+ //Initialize is fired when the chart is initialized - Data is passed in as a parameter
+ //Config is automatically merged by the core of Chart.js, and is available at this.options
+ initialize: function(data){
+
+ //Declare segments as a static property to prevent inheriting across the Chart type prototype
+ this.segments = [];
+ this.outerRadius = (helpers.min([this.chart.width,this.chart.height]) - this.options.segmentStrokeWidth/2)/2;
+
+ this.SegmentArc = Chart.Arc.extend({
+ ctx : this.chart.ctx,
+ x : this.chart.width/2,
+ y : this.chart.height/2
+ });
+
+ //Set up tooltip events on the chart
+ if (this.options.showTooltips){
+ helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
+ var activeSegments = (evt.type !== 'mouseout') ? this.getSegmentsAtEvent(evt) : [];
+
+ helpers.each(this.segments,function(segment){
+ segment.restore(["fillColor"]);
+ });
+ helpers.each(activeSegments,function(activeSegment){
+ activeSegment.fillColor = activeSegment.highlightColor;
+ });
+ this.showTooltip(activeSegments);
+ });
+ }
+ this.calculateTotal(data);
+
+ helpers.each(data,function(datapoint, index){
+ this.addData(datapoint, index, true);
+ },this);
+
+ this.render();
+ },
+ getSegmentsAtEvent : function(e){
+ var segmentsArray = [];
+
+ var location = helpers.getRelativePosition(e);
+
+ helpers.each(this.segments,function(segment){
+ if (segment.inRange(location.x,location.y)) segmentsArray.push(segment);
+ },this);
+ return segmentsArray;
+ },
+ addData : function(segment, atIndex, silent){
+ var index = atIndex || this.segments.length;
+ this.segments.splice(index, 0, new this.SegmentArc({
+ value : segment.value,
+ outerRadius : (this.options.animateScale) ? 0 : this.outerRadius,
+ innerRadius : (this.options.animateScale) ? 0 : (this.outerRadius/100) * this.options.percentageInnerCutout,
+ fillColor : segment.color,
+ highlightColor : segment.highlight || segment.color,
+ showStroke : this.options.segmentShowStroke,
+ strokeWidth : this.options.segmentStrokeWidth,
+ strokeColor : this.options.segmentStrokeColor,
+ startAngle : Math.PI * 1.5,
+ circumference : (this.options.animateRotate) ? 0 : this.calculateCircumference(segment.value),
+ label : segment.label
+ }));
+ if (!silent){
+ this.reflow();
+ this.update();
+ }
+ },
+ calculateCircumference : function(value){
+ return (Math.PI*2)*(value / this.total);
+ },
+ calculateTotal : function(data){
+ this.total = 0;
+ helpers.each(data,function(segment){
+ this.total += segment.value;
+ },this);
+ },
+ update : function(){
+ this.calculateTotal(this.segments);
+
+ // Reset any highlight colours before updating.
+ helpers.each(this.activeElements, function(activeElement){
+ activeElement.restore(['fillColor']);
+ });
+
+ helpers.each(this.segments,function(segment){
+ segment.save();
+ });
+ this.render();
+ },
+
+ removeData: function(atIndex){
+ var indexToDelete = (helpers.isNumber(atIndex)) ? atIndex : this.segments.length-1;
+ this.segments.splice(indexToDelete, 1);
+ this.reflow();
+ this.update();
+ },
+
+ reflow : function(){
+ helpers.extend(this.SegmentArc.prototype,{
+ x : this.chart.width/2,
+ y : this.chart.height/2
+ });
+ this.outerRadius = (helpers.min([this.chart.width,this.chart.height]) - this.options.segmentStrokeWidth/2)/2;
+ helpers.each(this.segments, function(segment){
+ segment.update({
+ outerRadius : this.outerRadius,
+ innerRadius : (this.outerRadius/100) * this.options.percentageInnerCutout
+ });
+ }, this);
+ },
+ draw : function(easeDecimal){
+ var animDecimal = (easeDecimal) ? easeDecimal : 1;
+ this.clear();
+ helpers.each(this.segments,function(segment,index){
+ segment.transition({
+ circumference : this.calculateCircumference(segment.value),
+ outerRadius : this.outerRadius,
+ innerRadius : (this.outerRadius/100) * this.options.percentageInnerCutout
+ },animDecimal);
+
+ segment.endAngle = segment.startAngle + segment.circumference;
+
+ segment.draw();
+ if (index === 0){
+ segment.startAngle = Math.PI * 1.5;
+ }
+ //Check to see if it's the last segment, if not get the next and update the start angle
+ if (index < this.segments.length-1){
+ this.segments[index+1].startAngle = segment.endAngle;
+ }
+ },this);
+
+ }
+ });
+
+ Chart.types.Doughnut.extend({
+ name : "Pie",
+ defaults : helpers.merge(defaultConfig,{percentageInnerCutout : 0})
+ });
+
+}).call(this);
+(function(){
+ "use strict";
+
+ var root = this,
+ Chart = root.Chart,
+ helpers = Chart.helpers;
+
+ var defaultConfig = {
+
+ ///Boolean - Whether grid lines are shown across the chart
+ scaleShowGridLines : true,
+
+ //String - Colour of the grid lines
+ scaleGridLineColor : "rgba(0,0,0,.05)",
+
+ //Number - Width of the grid lines
+ scaleGridLineWidth : 1,
+
+ //Boolean - Whether the line is curved between points
+ bezierCurve : true,
+
+ //Number - Tension of the bezier curve between points
+ bezierCurveTension : 0.4,
+
+ //Boolean - Whether to show a dot for each point
+ pointDot : true,
+
+ //Number - Radius of each point dot in pixels
+ pointDotRadius : 4,
+
+ //Number - Pixel width of point dot stroke
+ pointDotStrokeWidth : 1,
+
+ //Number - amount extra to add to the radius to cater for hit detection outside the drawn point
+ pointHitDetectionRadius : 20,
+
+ //Boolean - Whether to show a stroke for datasets
+ datasetStroke : true,
+
+ //Number - Pixel width of dataset stroke
+ datasetStrokeWidth : 2,
+
+ //Boolean - Whether to fill the dataset with a colour
+ datasetFill : true,
+
+ //String - A legend template
+ legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].strokeColor%>\"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>"
+
+ };
+
+
+ Chart.Type.extend({
+ name: "Line",
+ defaults : defaultConfig,
+ initialize: function(data){
+ //Declare the extension of the default point, to cater for the options passed in to the constructor
+ this.PointClass = Chart.Point.extend({
+ strokeWidth : this.options.pointDotStrokeWidth,
+ radius : this.options.pointDotRadius,
+ hitDetectionRadius : this.options.pointHitDetectionRadius,
+ ctx : this.chart.ctx,
+ inRange : function(mouseX){
+ return (Math.pow(mouseX-this.x, 2) < Math.pow(this.radius + this.hitDetectionRadius,2));
+ }
+ });
+
+ this.datasets = [];
+
+ //Set up tooltip events on the chart
+ if (this.options.showTooltips){
+ helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
+ var activePoints = (evt.type !== 'mouseout') ? this.getPointsAtEvent(evt) : [];
+ this.eachPoints(function(point){
+ point.restore(['fillColor', 'strokeColor']);
+ });
+ helpers.each(activePoints, function(activePoint){
+ activePoint.fillColor = activePoint.highlightFill;
+ activePoint.strokeColor = activePoint.highlightStroke;
+ });
+ this.showTooltip(activePoints);
+ });
+ }
+
+ //Iterate through each of the datasets, and build this into a property of the chart
+ helpers.each(data.datasets,function(dataset){
+
+ var datasetObject = {
+ label : dataset.label || null,
+ fillColor : dataset.fillColor,
+ strokeColor : dataset.strokeColor,
+ pointColor : dataset.pointColor,
+ pointStrokeColor : dataset.pointStrokeColor,
+ points : []
+ };
+
+ this.datasets.push(datasetObject);
+
+
+ helpers.each(dataset.data,function(dataPoint,index){
+ //Best way to do this? or in draw sequence...?
+ if (helpers.isNumber(dataPoint)){
+ //Add a new point for each piece of data, passing any required data to draw.
+ datasetObject.points.push(new this.PointClass({
+ value : dataPoint,
+ label : data.labels[index],
+ // x: this.scale.calculateX(index),
+ // y: this.scale.endPoint,
+ strokeColor : dataset.pointStrokeColor,
+ fillColor : dataset.pointColor,
+ highlightFill : dataset.pointHighlightFill || dataset.pointColor,
+ highlightStroke : dataset.pointHighlightStroke || dataset.pointStrokeColor
+ }));
+ }
+ },this);
+
+ this.buildScale(data.labels);
+
+
+ this.eachPoints(function(point, index){
+ helpers.extend(point, {
+ x: this.scale.calculateX(index),
+ y: this.scale.endPoint
+ });
+ point.save();
+ }, this);
+
+ },this);
+
+
+ this.render();
+ },
+ update : function(){
+ this.scale.update();
+ // Reset any highlight colours before updating.
+ helpers.each(this.activeElements, function(activeElement){
+ activeElement.restore(['fillColor', 'strokeColor']);
+ });
+ this.eachPoints(function(point){
+ point.save();
+ });
+ this.render();
+ },
+ eachPoints : function(callback){
+ helpers.each(this.datasets,function(dataset){
+ helpers.each(dataset.points,callback,this);
+ },this);
+ },
+ getPointsAtEvent : function(e){
+ var pointsArray = [],
+ eventPosition = helpers.getRelativePosition(e);
+ helpers.each(this.datasets,function(dataset){
+ helpers.each(dataset.points,function(point){
+ if (point.inRange(eventPosition.x,eventPosition.y)) pointsArray.push(point);
+ });
+ },this);
+ return pointsArray;
+ },
+ buildScale : function(labels){
+ var self = this;
+
+ var dataTotal = function(){
+ var values = [];
+ self.eachPoints(function(point){
+ values.push(point.value);
+ });
+
+ return values;
+ };
+
+ var scaleOptions = {
+ templateString : this.options.scaleLabel,
+ height : this.chart.height,
+ width : this.chart.width,
+ ctx : this.chart.ctx,
+ textColor : this.options.scaleFontColor,
+ fontSize : this.options.scaleFontSize,
+ fontStyle : this.options.scaleFontStyle,
+ fontFamily : this.options.scaleFontFamily,
+ valuesCount : labels.length,
+ beginAtZero : this.options.scaleBeginAtZero,
+ integersOnly : this.options.scaleIntegersOnly,
+ calculateYRange : function(currentHeight){
+ var updatedRanges = helpers.calculateScaleRange(
+ dataTotal(),
+ currentHeight,
+ this.fontSize,
+ this.beginAtZero,
+ this.integersOnly
+ );
+ helpers.extend(this, updatedRanges);
+ },
+ xLabels : labels,
+ font : helpers.fontString(this.options.scaleFontSize, this.options.scaleFontStyle, this.options.scaleFontFamily),
+ lineWidth : this.options.scaleLineWidth,
+ lineColor : this.options.scaleLineColor,
+ gridLineWidth : (this.options.scaleShowGridLines) ? this.options.scaleGridLineWidth : 0,
+ gridLineColor : (this.options.scaleShowGridLines) ? this.options.scaleGridLineColor : "rgba(0,0,0,0)",
+ padding: (this.options.showScale) ? 0 : this.options.pointDotRadius + this.options.pointDotStrokeWidth,
+ showLabels : this.options.scaleShowLabels,
+ display : this.options.showScale
+ };
+
+ if (this.options.scaleOverride){
+ helpers.extend(scaleOptions, {
+ calculateYRange: helpers.noop,
+ steps: this.options.scaleSteps,
+ stepValue: this.options.scaleStepWidth,
+ min: this.options.scaleStartValue,
+ max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
+ });
+ }
+
+
+ this.scale = new Chart.Scale(scaleOptions);
+ },
+ addData : function(valuesArray,label){
+ //Map the values array for each of the datasets
+
+ helpers.each(valuesArray,function(value,datasetIndex){
+ if (helpers.isNumber(value)){
+ //Add a new point for each piece of data, passing any required data to draw.
+ this.datasets[datasetIndex].points.push(new this.PointClass({
+ value : value,
+ label : label,
+ x: this.scale.calculateX(this.scale.valuesCount+1),
+ y: this.scale.endPoint,
+ strokeColor : this.datasets[datasetIndex].pointStrokeColor,
+ fillColor : this.datasets[datasetIndex].pointColor
+ }));
+ }
+ },this);
+
+ this.scale.addXLabel(label);
+ //Then re-render the chart.
+ this.update();
+ },
+ removeData : function(){
+ this.scale.removeXLabel();
+ //Then re-render the chart.
+ helpers.each(this.datasets,function(dataset){
+ dataset.points.shift();
+ },this);
+ this.update();
+ },
+ reflow : function(){
+ var newScaleProps = helpers.extend({
+ height : this.chart.height,
+ width : this.chart.width
+ });
+ this.scale.update(newScaleProps);
+ },
+ draw : function(ease){
+ var easingDecimal = ease || 1;
+ this.clear();
+
+ var ctx = this.chart.ctx;
+
+ this.scale.draw(easingDecimal);
+
+
+ helpers.each(this.datasets,function(dataset){
+
+ //Transition each point first so that the line and point drawing isn't out of sync
+ //We can use this extra loop to calculate the control points of this dataset also in this loop
+
+ helpers.each(dataset.points,function(point,index){
+ point.transition({
+ y : this.scale.calculateY(point.value),
+ x : this.scale.calculateX(index)
+ }, easingDecimal);
+
+ },this);
+
+
+ // Control points need to be calculated in a seperate loop, because we need to know the current x/y of the point
+ // This would cause issues when there is no animation, because the y of the next point would be 0, so beziers would be skewed
+ if (this.options.bezierCurve){
+ helpers.each(dataset.points,function(point,index){
+ //If we're at the start or end, we don't have a previous/next point
+ //By setting the tension to 0 here, the curve will transition to straight at the end
+ if (index === 0){
+ point.controlPoints = helpers.splineCurve(point,point,dataset.points[index+1],0);
+ }
+ else if (index >= dataset.points.length-1){
+ point.controlPoints = helpers.splineCurve(dataset.points[index-1],point,point,0);
+ }
+ else{
+ point.controlPoints = helpers.splineCurve(dataset.points[index-1],point,dataset.points[index+1],this.options.bezierCurveTension);
+ }
+ },this);
+ }
+
+
+ //Draw the line between all the points
+ ctx.lineWidth = this.options.datasetStrokeWidth;
+ ctx.strokeStyle = dataset.strokeColor;
+ ctx.beginPath();
+ helpers.each(dataset.points,function(point,index){
+ if (index>0){
+ if(this.options.bezierCurve){
+ ctx.bezierCurveTo(
+ dataset.points[index-1].controlPoints.outer.x,
+ dataset.points[index-1].controlPoints.outer.y,
+ point.controlPoints.inner.x,
+ point.controlPoints.inner.y,
+ point.x,
+ point.y
+ );
+ }
+ else{
+ ctx.lineTo(point.x,point.y);
+ }
+
+ }
+ else{
+ ctx.moveTo(point.x,point.y);
+ }
+ },this);
+ ctx.stroke();
+
+
+ if (this.options.datasetFill){
+ //Round off the line by going to the base of the chart, back to the start, then fill.
+ ctx.lineTo(dataset.points[dataset.points.length-1].x, this.scale.endPoint);
+ ctx.lineTo(this.scale.calculateX(0), this.scale.endPoint);
+ ctx.fillStyle = dataset.fillColor;
+ ctx.closePath();
+ ctx.fill();
+ }
+
+ //Now draw the points over the line
+ //A little inefficient double looping, but better than the line
+ //lagging behind the point positions
+ helpers.each(dataset.points,function(point){
+ point.draw();
+ });
+
+ },this);
+ }
+ });
+
+
+}).call(this);
+(function(){
+ "use strict";
+
+ var root = this,
+ Chart = root.Chart,
+ //Cache a local reference to Chart.helpers
+ helpers = Chart.helpers;
+
+ var defaultConfig = {
+ //Boolean - Show a backdrop to the scale label
+ scaleShowLabelBackdrop : true,
+
+ //String - The colour of the label backdrop
+ scaleBackdropColor : "rgba(255,255,255,0.75)",
+
+ // Boolean - Whether the scale should begin at zero
+ scaleBeginAtZero : true,
+
+ //Number - The backdrop padding above & below the label in pixels
+ scaleBackdropPaddingY : 2,
+
+ //Number - The backdrop padding to the side of the label in pixels
+ scaleBackdropPaddingX : 2,
+
+ //Boolean - Show line for each value in the scale
+ scaleShowLine : true,
+
+ //Boolean - Stroke a line around each segment in the chart
+ segmentShowStroke : true,
+
+ //String - The colour of the stroke on each segement.
+ segmentStrokeColor : "#fff",
+
+ //Number - The width of the stroke value in pixels
+ segmentStrokeWidth : 2,
+
+ //Number - Amount of animation steps
+ animationSteps : 100,
+
+ //String - Animation easing effect.
+ animationEasing : "easeOutBounce",
+
+ //Boolean - Whether to animate the rotation of the chart
+ animateRotate : true,
+
+ //Boolean - Whether to animate scaling the chart from the centre
+ animateScale : false,
+
+ //String - A legend template
+ legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span style=\"background-color:<%=segments[i].fillColor%>\"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>"
+ };
+
+
+ Chart.Type.extend({
+ //Passing in a name registers this chart in the Chart namespace
+ name: "PolarArea",
+ //Providing a defaults will also register the deafults in the chart namespace
+ defaults : defaultConfig,
+ //Initialize is fired when the chart is initialized - Data is passed in as a parameter
+ //Config is automatically merged by the core of Chart.js, and is available at this.options
+ initialize: function(data){
+ this.segments = [];
+ //Declare segment class as a chart instance specific class, so it can share props for this instance
+ this.SegmentArc = Chart.Arc.extend({
+ showStroke : this.options.segmentShowStroke,
+ strokeWidth : this.options.segmentStrokeWidth,
+ strokeColor : this.options.segmentStrokeColor,
+ ctx : this.chart.ctx,
+ innerRadius : 0,
+ x : this.chart.width/2,
+ y : this.chart.height/2
+ });
+ this.scale = new Chart.RadialScale({
+ display: this.options.showScale,
+ fontStyle: this.options.scaleFontStyle,
+ fontSize: this.options.scaleFontSize,
+ fontFamily: this.options.scaleFontFamily,
+ fontColor: this.options.scaleFontColor,
+ showLabels: this.options.scaleShowLabels,
+ showLabelBackdrop: this.options.scaleShowLabelBackdrop,
+ backdropColor: this.options.scaleBackdropColor,
+ backdropPaddingY : this.options.scaleBackdropPaddingY,
+ backdropPaddingX: this.options.scaleBackdropPaddingX,
+ lineWidth: (this.options.scaleShowLine) ? this.options.scaleLineWidth : 0,
+ lineColor: this.options.scaleLineColor,
+ lineArc: true,
+ width: this.chart.width,
+ height: this.chart.height,
+ xCenter: this.chart.width/2,
+ yCenter: this.chart.height/2,
+ ctx : this.chart.ctx,
+ templateString: this.options.scaleLabel,
+ valuesCount: data.length
+ });
+
+ this.updateScaleRange(data);
+
+ this.scale.update();
+
+ helpers.each(data,function(segment,index){
+ this.addData(segment,index,true);
+ },this);
+
+ //Set up tooltip events on the chart
+ if (this.options.showTooltips){
+ helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
+ var activeSegments = (evt.type !== 'mouseout') ? this.getSegmentsAtEvent(evt) : [];
+ helpers.each(this.segments,function(segment){
+ segment.restore(["fillColor"]);
+ });
+ helpers.each(activeSegments,function(activeSegment){
+ activeSegment.fillColor = activeSegment.highlightColor;
+ });
+ this.showTooltip(activeSegments);
+ });
+ }
+
+ this.render();
+ },
+ getSegmentsAtEvent : function(e){
+ var segmentsArray = [];
+
+ var location = helpers.getRelativePosition(e);
+
+ helpers.each(this.segments,function(segment){
+ if (segment.inRange(location.x,location.y)) segmentsArray.push(segment);
+ },this);
+ return segmentsArray;
+ },
+ addData : function(segment, atIndex, silent){
+ var index = atIndex || this.segments.length;
+
+ this.segments.splice(index, 0, new this.SegmentArc({
+ fillColor: segment.color,
+ highlightColor: segment.highlight || segment.color,
+ label: segment.label,
+ value: segment.value,
+ outerRadius: (this.options.animateScale) ? 0 : this.scale.calculateCenterOffset(segment.value),
+ circumference: (this.options.animateRotate) ? 0 : this.scale.getCircumference(),
+ startAngle: Math.PI * 1.5
+ }));
+ if (!silent){
+ this.reflow();
+ this.update();
+ }
+ },
+ removeData: function(atIndex){
+ var indexToDelete = (helpers.isNumber(atIndex)) ? atIndex : this.segments.length-1;
+ this.segments.splice(indexToDelete, 1);
+ this.reflow();
+ this.update();
+ },
+ calculateTotal: function(data){
+ this.total = 0;
+ helpers.each(data,function(segment){
+ this.total += segment.value;
+ },this);
+ this.scale.valuesCount = this.segments.length;
+ },
+ updateScaleRange: function(datapoints){
+ var valuesArray = [];
+ helpers.each(datapoints,function(segment){
+ valuesArray.push(segment.value);
+ });
+
+ var scaleSizes = (this.options.scaleOverride) ?
+ {
+ steps: this.options.scaleSteps,
+ stepValue: this.options.scaleStepWidth,
+ min: this.options.scaleStartValue,
+ max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
+ } :
+ helpers.calculateScaleRange(
+ valuesArray,
+ helpers.min([this.chart.width, this.chart.height])/2,
+ this.options.scaleFontSize,
+ this.options.scaleBeginAtZero,
+ this.options.scaleIntegersOnly
+ );
+
+ helpers.extend(
+ this.scale,
+ scaleSizes,
+ {
+ size: helpers.min([this.chart.width, this.chart.height]),
+ xCenter: this.chart.width/2,
+ yCenter: this.chart.height/2
+ }
+ );
+
+ },
+ update : function(){
+ this.calculateTotal(this.segments);
+
+ helpers.each(this.segments,function(segment){
+ segment.save();
+ });
+ this.render();
+ },
+ reflow : function(){
+ helpers.extend(this.SegmentArc.prototype,{
+ x : this.chart.width/2,
+ y : this.chart.height/2
+ });
+ this.updateScaleRange(this.segments);
+ this.scale.update();
+
+ helpers.extend(this.scale,{
+ xCenter: this.chart.width/2,
+ yCenter: this.chart.height/2
+ });
+
+ helpers.each(this.segments, function(segment){
+ segment.update({
+ outerRadius : this.scale.calculateCenterOffset(segment.value)
+ });
+ }, this);
+
+ },
+ draw : function(ease){
+ var easingDecimal = ease || 1;
+ //Clear & draw the canvas
+ this.clear();
+ helpers.each(this.segments,function(segment, index){
+ segment.transition({
+ circumference : this.scale.getCircumference(),
+ outerRadius : this.scale.calculateCenterOffset(segment.value)
+ },easingDecimal);
+
+ segment.endAngle = segment.startAngle + segment.circumference;
+
+ // If we've removed the first segment we need to set the first one to
+ // start at the top.
+ if (index === 0){
+ segment.startAngle = Math.PI * 1.5;
+ }
+
+ //Check to see if it's the last segment, if not get the next and update the start angle
+ if (index < this.segments.length - 1){
+ this.segments[index+1].startAngle = segment.endAngle;
+ }
+ segment.draw();
+ }, this);
+ this.scale.draw();
+ }
+ });
+
+}).call(this);
+(function(){
+ "use strict";
+
+ var root = this,
+ Chart = root.Chart,
+ helpers = Chart.helpers;
+
+
+
+ Chart.Type.extend({
+ name: "Radar",
+ defaults:{
+ //Boolean - Whether to show lines for each scale point
+ scaleShowLine : true,
+
+ //Boolean - Whether we show the angle lines out of the radar
+ angleShowLineOut : true,
+
+ //Boolean - Whether to show labels on the scale
+ scaleShowLabels : false,
+
+ // Boolean - Whether the scale should begin at zero
+ scaleBeginAtZero : true,
+
+ //String - Colour of the angle line
+ angleLineColor : "rgba(0,0,0,.1)",
+
+ //Number - Pixel width of the angle line
+ angleLineWidth : 1,
+
+ //String - Point label font declaration
+ pointLabelFontFamily : "'Arial'",
+
+ //String - Point label font weight
+ pointLabelFontStyle : "normal",
+
+ //Number - Point label font size in pixels
+ pointLabelFontSize : 10,
+
+ //String - Point label font colour
+ pointLabelFontColor : "#666",
+
+ //Boolean - Whether to show a dot for each point
+ pointDot : true,
+
+ //Number - Radius of each point dot in pixels
+ pointDotRadius : 3,
+
+ //Number - Pixel width of point dot stroke
+ pointDotStrokeWidth : 1,
+
+ //Number - amount extra to add to the radius to cater for hit detection outside the drawn point
+ pointHitDetectionRadius : 20,
+
+ //Boolean - Whether to show a stroke for datasets
+ datasetStroke : true,
+
+ //Number - Pixel width of dataset stroke
+ datasetStrokeWidth : 2,
+
+ //Boolean - Whether to fill the dataset with a colour
+ datasetFill : true,
+
+ //String - A legend template
+ legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].strokeColor%>\"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>"
+
+ },
+
+ initialize: function(data){
+ this.PointClass = Chart.Point.extend({
+ strokeWidth : this.options.pointDotStrokeWidth,
+ radius : this.options.pointDotRadius,
+ hitDetectionRadius : this.options.pointHitDetectionRadius,
+ ctx : this.chart.ctx
+ });
+
+ this.datasets = [];
+
+ this.buildScale(data);
+
+ //Set up tooltip events on the chart
+ if (this.options.showTooltips){
+ helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
+ var activePointsCollection = (evt.type !== 'mouseout') ? this.getPointsAtEvent(evt) : [];
+
+ this.eachPoints(function(point){
+ point.restore(['fillColor', 'strokeColor']);
+ });
+ helpers.each(activePointsCollection, function(activePoint){
+ activePoint.fillColor = activePoint.highlightFill;
+ activePoint.strokeColor = activePoint.highlightStroke;
+ });
+
+ this.showTooltip(activePointsCollection);
+ });
+ }
+
+ //Iterate through each of the datasets, and build this into a property of the chart
+ helpers.each(data.datasets,function(dataset){
+
+ var datasetObject = {
+ label: dataset.label || null,
+ fillColor : dataset.fillColor,
+ strokeColor : dataset.strokeColor,
+ pointColor : dataset.pointColor,
+ pointStrokeColor : dataset.pointStrokeColor,
+ points : []
+ };
+
+ this.datasets.push(datasetObject);
+
+ helpers.each(dataset.data,function(dataPoint,index){
+ //Best way to do this? or in draw sequence...?
+ if (helpers.isNumber(dataPoint)){
+ //Add a new point for each piece of data, passing any required data to draw.
+ var pointPosition;
+ if (!this.scale.animation){
+ pointPosition = this.scale.getPointPosition(index, this.scale.calculateCenterOffset(dataPoint));
+ }
+ datasetObject.points.push(new this.PointClass({
+ value : dataPoint,
+ label : data.labels[index],
+ x: (this.options.animation) ? this.scale.xCenter : pointPosition.x,
+ y: (this.options.animation) ? this.scale.yCenter : pointPosition.y,
+ strokeColor : dataset.pointStrokeColor,
+ fillColor : dataset.pointColor,
+ highlightFill : dataset.pointHighlightFill || dataset.pointColor,
+ highlightStroke : dataset.pointHighlightStroke || dataset.pointStrokeColor
+ }));
+ }
+ },this);
+
+ },this);
+
+ this.render();
+ },
+ eachPoints : function(callback){
+ helpers.each(this.datasets,function(dataset){
+ helpers.each(dataset.points,callback,this);
+ },this);
+ },
+
+ getPointsAtEvent : function(evt){
+ var mousePosition = helpers.getRelativePosition(evt),
+ fromCenter = helpers.getAngleFromPoint({
+ x: this.scale.xCenter,
+ y: this.scale.yCenter
+ }, mousePosition);
+
+ var anglePerIndex = (Math.PI * 2) /this.scale.valuesCount,
+ pointIndex = Math.round((fromCenter.angle - Math.PI * 1.5) / anglePerIndex),
+ activePointsCollection = [];
+
+ // If we're at the top, make the pointIndex 0 to get the first of the array.
+ if (pointIndex >= this.scale.valuesCount || pointIndex < 0){
+ pointIndex = 0;
+ }
+
+ if (fromCenter.distance <= this.scale.drawingArea){
+ helpers.each(this.datasets, function(dataset){
+ activePointsCollection.push(dataset.points[pointIndex]);
+ });
+ }
+
+ return activePointsCollection;
+ },
+
+ buildScale : function(data){
+ this.scale = new Chart.RadialScale({
+ display: this.options.showScale,
+ fontStyle: this.options.scaleFontStyle,
+ fontSize: this.options.scaleFontSize,
+ fontFamily: this.options.scaleFontFamily,
+ fontColor: this.options.scaleFontColor,
+ showLabels: this.options.scaleShowLabels,
+ showLabelBackdrop: this.options.scaleShowLabelBackdrop,
+ backdropColor: this.options.scaleBackdropColor,
+ backdropPaddingY : this.options.scaleBackdropPaddingY,
+ backdropPaddingX: this.options.scaleBackdropPaddingX,
+ lineWidth: (this.options.scaleShowLine) ? this.options.scaleLineWidth : 0,
+ lineColor: this.options.scaleLineColor,
+ angleLineColor : this.options.angleLineColor,
+ angleLineWidth : (this.options.angleShowLineOut) ? this.options.angleLineWidth : 0,
+ // Point labels at the edge of each line
+ pointLabelFontColor : this.options.pointLabelFontColor,
+ pointLabelFontSize : this.options.pointLabelFontSize,
+ pointLabelFontFamily : this.options.pointLabelFontFamily,
+ pointLabelFontStyle : this.options.pointLabelFontStyle,
+ height : this.chart.height,
+ width: this.chart.width,
+ xCenter: this.chart.width/2,
+ yCenter: this.chart.height/2,
+ ctx : this.chart.ctx,
+ templateString: this.options.scaleLabel,
+ labels: data.labels,
+ valuesCount: data.datasets[0].data.length
+ });
+
+ this.scale.setScaleSize();
+ this.updateScaleRange(data.datasets);
+ this.scale.buildYLabels();
+ },
+ updateScaleRange: function(datasets){
+ var valuesArray = (function(){
+ var totalDataArray = [];
+ helpers.each(datasets,function(dataset){
+ if (dataset.data){
+ totalDataArray = totalDataArray.concat(dataset.data);
+ }
+ else {
+ helpers.each(dataset.points, function(point){
+ totalDataArray.push(point.value);
+ });
+ }
+ });
+ return totalDataArray;
+ })();
+
+
+ var scaleSizes = (this.options.scaleOverride) ?
+ {
+ steps: this.options.scaleSteps,
+ stepValue: this.options.scaleStepWidth,
+ min: this.options.scaleStartValue,
+ max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
+ } :
+ helpers.calculateScaleRange(
+ valuesArray,
+ helpers.min([this.chart.width, this.chart.height])/2,
+ this.options.scaleFontSize,
+ this.options.scaleBeginAtZero,
+ this.options.scaleIntegersOnly
+ );
+
+ helpers.extend(
+ this.scale,
+ scaleSizes
+ );
+
+ },
+ addData : function(valuesArray,label){
+ //Map the values array for each of the datasets
+ this.scale.valuesCount++;
+ helpers.each(valuesArray,function(value,datasetIndex){
+ if (helpers.isNumber(value)){
+ var pointPosition = this.scale.getPointPosition(this.scale.valuesCount, this.scale.calculateCenterOffset(value));
+ this.datasets[datasetIndex].points.push(new this.PointClass({
+ value : value,
+ label : label,
+ x: pointPosition.x,
+ y: pointPosition.y,
+ strokeColor : this.datasets[datasetIndex].pointStrokeColor,
+ fillColor : this.datasets[datasetIndex].pointColor
+ }));
+ }
+ },this);
+
+ this.scale.labels.push(label);
+
+ this.reflow();
+
+ this.update();
+ },
+ removeData : function(){
+ this.scale.valuesCount--;
+ this.scale.labels.shift();
+ helpers.each(this.datasets,function(dataset){
+ dataset.points.shift();
+ },this);
+ this.reflow();
+ this.update();
+ },
+ update : function(){
+ this.eachPoints(function(point){
+ point.save();
+ });
+ this.render();
+ },
+ reflow: function(){
+ helpers.extend(this.scale, {
+ width : this.chart.width,
+ height: this.chart.height,
+ size : helpers.min([this.chart.width, this.chart.height]),
+ xCenter: this.chart.width/2,
+ yCenter: this.chart.height/2
+ });
+ this.updateScaleRange(this.datasets);
+ this.scale.setScaleSize();
+ this.scale.buildYLabels();
+ },
+ draw : function(ease){
+ var easeDecimal = ease || 1,
+ ctx = this.chart.ctx;
+ this.clear();
+ this.scale.draw();
+
+ helpers.each(this.datasets,function(dataset){
+
+ //Transition each point first so that the line and point drawing isn't out of sync
+ helpers.each(dataset.points,function(point,index){
+ point.transition(this.scale.getPointPosition(index, this.scale.calculateCenterOffset(point.value)), easeDecimal);
+ },this);
+
+
+
+ //Draw the line between all the points
+ ctx.lineWidth = this.options.datasetStrokeWidth;
+ ctx.strokeStyle = dataset.strokeColor;
+ ctx.beginPath();
+ helpers.each(dataset.points,function(point,index){
+ if (index === 0){
+ ctx.moveTo(point.x,point.y);
+ }
+ else{
+ ctx.lineTo(point.x,point.y);
+ }
+ },this);
+ ctx.closePath();
+ ctx.stroke();
+
+ ctx.fillStyle = dataset.fillColor;
+ ctx.fill();
+
+ //Now draw the points over the line
+ //A little inefficient double looping, but better than the line
+ //lagging behind the point positions
+ helpers.each(dataset.points,function(point){
+ point.draw();
+ });
+
+ },this);
+
+ }
+
+ });
+
+
+
+}).call(this);
\ No newline at end of file
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-b(c):b}var r=this,B={linear:function(a){return a},easeInQuad:function(a){return a*a},easeOutQuad:function(a){return-1*a*(a-2)},easeInOutQuad:function(a){return 1>(a/=0.5)?0.5*a*a:-0.5*(--a*(a-2)-1)},easeInCubic:function(a){return a*a*a},easeOutCubic:function(a){return 1*((a=a/1-1)*a*a+1)},easeInOutCubic:function(a){return 1>(a/=0.5)?0.5*a*a*a:0.5*((a-=2)*a*a+2)},easeInQuart:function(a){return a*a*a*a},easeOutQuart:function(a){return-1*((a=a/1-1)*a*a*a-1)},easeInOutQuart:function(a){return 1>(a/=0.5)?
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-a?1:1*(-Math.pow(2,-10*a/1)+1)},easeInOutExpo:function(a){return 0==a?0:1==a?1:1>(a/=0.5)?0.5*Math.pow(2,10*(a-1)):0.5*(-Math.pow(2,-10*--a)+2)},easeInCirc:function(a){return 1<=a?a:-1*(Math.sqrt(1-(a/=1)*a)-1)},easeOutCirc:function(a){return 1*Math.sqrt(1-(a=a/1-1)*a)},easeInOutCirc:function(a){return 1>(a/=0.5)?-0.5*(Math.sqrt(1-a*a)-1):0.5*(Math.sqrt(1-(a-=2)*a)+1)},easeInElastic:function(a){var c=1.70158,b=0,e=1;if(0==a)return 0;if(1==(a/=1))return 1;b||(b=0.3);e<Math.abs(1)?(e=1,c=b/4):c=b/(2*
-Math.PI)*Math.asin(1/e);return-(e*Math.pow(2,10*(a-=1))*Math.sin((1*a-c)*2*Math.PI/b))},easeOutElastic:function(a){var c=1.70158,b=0,e=1;if(0==a)return 0;if(1==(a/=1))return 1;b||(b=0.3);e<Math.abs(1)?(e=1,c=b/4):c=b/(2*Math.PI)*Math.asin(1/e);return e*Math.pow(2,-10*a)*Math.sin((1*a-c)*2*Math.PI/b)+1},easeInOutElastic:function(a){var c=1.70158,b=0,e=1;if(0==a)return 0;if(2==(a/=0.5))return 1;b||(b=1*0.3*1.5);e<Math.abs(1)?(e=1,c=b/4):c=b/(2*Math.PI)*Math.asin(1/e);return 1>a?-0.5*e*Math.pow(2,10*
-(a-=1))*Math.sin((1*a-c)*2*Math.PI/b):0.5*e*Math.pow(2,-10*(a-=1))*Math.sin((1*a-c)*2*Math.PI/b)+1},easeInBack:function(a){return 1*(a/=1)*a*(2.70158*a-1.70158)},easeOutBack:function(a){return 1*((a=a/1-1)*a*(2.70158*a+1.70158)+1)},easeInOutBack:function(a){var c=1.70158;return 1>(a/=0.5)?0.5*a*a*(((c*=1.525)+1)*a-c):0.5*((a-=2)*a*(((c*=1.525)+1)*a+c)+2)},easeInBounce:function(a){return 1-B.easeOutBounce(1-a)},easeOutBounce:function(a){return(a/=1)<1/2.75?1*7.5625*a*a:a<2/2.75?1*(7.5625*(a-=1.5/2.75)*
-a+0.75):a<2.5/2.75?1*(7.5625*(a-=2.25/2.75)*a+0.9375):1*(7.5625*(a-=2.625/2.75)*a+0.984375)},easeInOutBounce:function(a){return 0.5>a?0.5*B.easeInBounce(2*a):0.5*B.easeOutBounce(2*a-1)+0.5}},q=s.canvas.width,u=s.canvas.height;window.devicePixelRatio&&(s.canvas.style.width=q+"px",s.canvas.style.height=u+"px",s.canvas.height=u*window.devicePixelRatio,s.canvas.width=q*window.devicePixelRatio,s.scale(window.devicePixelRatio,window.devicePixelRatio));this.PolarArea=function(a,c){r.PolarArea.defaults={scaleOverlay:!0,
-scaleOverride:!1,scaleSteps:null,scaleStepWidth:null,scaleStartValue:null,scaleShowLine:!0,scaleLineColor:"rgba(0,0,0,.1)",scaleLineWidth:1,scaleShowLabels:!0,scaleLabel:"<%=value%>",scaleFontFamily:"'Arial'",scaleFontSize:12,scaleFontStyle:"normal",scaleFontColor:"#666",scaleShowLabelBackdrop:!0,scaleBackdropColor:"rgba(255,255,255,0.75)",scaleBackdropPaddingY:2,scaleBackdropPaddingX:2,segmentShowStroke:!0,segmentStrokeColor:"#fff",segmentStrokeWidth:2,animation:!0,animationSteps:100,animationEasing:"easeOutBounce",
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-onAnimationComplete:null};var b=c?y(r.Doughnut.defaults,c):r.Doughnut.defaults;return new J(a,b,s)};this.Line=function(a,c){r.Line.defaults={scaleOverlay:!1,scaleOverride:!1,scaleSteps:null,scaleStepWidth:null,scaleStartValue:null,scaleLineColor:"rgba(0,0,0,.1)",scaleLineWidth:1,scaleShowLabels:!0,scaleLabel:"<%=value%>",scaleFontFamily:"'Arial'",scaleFontSize:12,scaleFontStyle:"normal",scaleFontColor:"#666",scaleShowGridLines:!0,scaleGridLineColor:"rgba(0,0,0,.05)",scaleGridLineWidth:1,bezierCurve:!0,
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+/*!
+ * Chart.js
+ * http://chartjs.org/
+ *
+ * Copyright 2014 Nick Downie
+ * Released under the MIT license
+ * https://github.com/nnnick/Chart.js/blob/master/LICENSE.md
+ */
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i=this.drawingArea()/(this.min-this.max);return this.endPoint-i*(t-this.min)},calculateX:function(t){var i=(this.xLabelRotation>0,this.width-(this.xScalePaddingLeft+this.xScalePaddingRight)),e=i/(this.valuesCount-(this.offsetGridLines?0:1)),s=e*t+this.xScalePaddingLeft;return this.offsetGridLines&&(s+=e/2),Math.round(s)},update:function(t){s.extend(this,t),this.fit()},draw:function(){var t=this.ctx,i=(this.endPoint-this.startPoint)/this.steps,e=Math.round(this.xScalePaddingLeft);this.display&&(t.fillStyle=this.textColor,t.font=this.font,n(this.yLabels,function(n,o){var a=this.endPoint-i*o,h=Math.round(a);t.textAlign="right",t.textBaseline="middle",this.showLabels&&t.fillText(n,e-10,a),t.beginPath(),o>0?(t.lineWidth=this.gridLineWidth,t.strokeStyle=this.gridLineColor):(t.lineWidth=this.lineWidth,t.strokeStyle=this.lineColor),h+=s.aliasPixel(t.lineWidth),t.moveTo(e,h),t.lineTo(this.width,h),t.stroke(),t.closePath(),t.lineWidth=this.lineWidth,t.strokeStyle=this.lineColor,t.beginPath(),t.moveTo(e-5,h),t.lineTo(e,h),t.stroke(),t.closePath()},this),n(this.xLabels,function(i,e){var s=this.calculateX(e)+x(this.lineWidth),n=this.calculateX(e-(this.offsetGridLines?.5:0))+x(this.lineWidth),o=this.xLabelRotation>0;t.beginPath(),e>0?(t.lineWidth=this.gridLineWidth,t.strokeStyle=this.gridLineColor):(t.lineWidth=this.lineWidth,t.strokeStyle=this.lineColor),t.moveTo(n,this.endPoint),t.lineTo(n,this.startPoint-3),t.stroke(),t.closePath(),t.lineWidth=this.lineWidth,t.strokeStyle=this.lineColor,t.beginPath(),t.moveTo(n,this.endPoint),t.lineTo(n,this.endPoint+5),t.stroke(),t.closePath(),t.save(),t.translate(s,o?this.endPoint+12:this.endPoint+8),t.rotate(-1*S(this.xLabelRotation)),t.font=this.font,t.textAlign=o?"right":"center",t.textBaseline=o?"middle":"top",t.fillText(i,0,0),t.restore()},this))}}),e.RadialScale=e.Element.extend({initialize:function(){this.size=m([this.height,this.width]),this.drawingArea=this.display?this.size/2-(this.fontSize/2+this.backdropPaddingY):this.size/2},calculateCenterOffset:function(t){var i=this.drawingArea/(this.max-this.min);return(t-this.min)*i},update:function(){this.lineArc?this.drawingArea=this.display?this.size/2-(this.fontSize/2+this.backdropPaddingY):this.size/2:this.setScaleSize(),this.buildYLabels()},buildYLabels:function(){this.yLabels=[];for(var t=v(this.stepValue),i=0;i<=this.steps;i++)this.yLabels.push(y(this.templateString,{value:(this.min+i*this.stepValue).toFixed(t)}))},getCircumference:function(){return 2*Math.PI/this.valuesCount},setScaleSize:function(){var t,i,e,s,n,o,a,h,l,r,c,u,d=m([this.height/2-this.pointLabelFontSize-5,this.width/2]),p=this.width,g=0;for(this.ctx.font=T(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily),i=0;i<this.valuesCount;i++)t=this.getPointPosition(i,d),e=this.ctx.measureText(y(this.templateString,{value:this.labels[i]})).width+5,0===i||i===this.valuesCount/2?(s=e/2,t.x+s>p&&(p=t.x+s,n=i),t.x-s<g&&(g=t.x-s,a=i)):i<this.valuesCount/2?t.x+e>p&&(p=t.x+e,n=i):i>this.valuesCount/2&&t.x-e<g&&(g=t.x-e,a=i);l=g,r=Math.ceil(p-this.width),o=this.getIndexAngle(n),h=this.getIndexAngle(a),c=r/Math.sin(o+Math.PI/2),u=l/Math.sin(h+Math.PI/2),c=f(c)?c:0,u=f(u)?u:0,this.drawingArea=d-(u+c)/2,this.setCenterPoint(u,c)},setCenterPoint:function(t,i){var e=this.width-i-this.drawingArea,s=t+this.drawingArea;this.xCenter=(s+e)/2,this.yCenter=this.height/2},getIndexAngle:function(t){var i=2*Math.PI/this.valuesCount;return t*i-Math.PI/2},getPointPosition:function(t,i){var e=this.getIndexAngle(t);return{x:Math.cos(e)*i+this.xCenter,y:Math.sin(e)*i+this.yCenter}},draw:function(){if(this.display){var t=this.ctx;if(n(this.yLabels,function(i,e){if(e>0){var s,n=e*(this.drawingArea/this.steps),o=this.yCenter-n;if(this.lineWidth>0)if(t.strokeStyle=this.lineColor,t.lineWidth=this.lineWidth,this.lineArc)t.beginPath(),t.arc(this.xCenter,this.yCenter,n,0,2*Math.PI),t.closePath(),t.stroke();else{t.beginPath();for(var a=0;a<this.valuesCount;a++)s=this.getPointPosition(a,this.calculateCenterOffset(this.min+e*this.stepValue)),0===a?t.moveTo(s.x,s.y):t.lineTo(s.x,s.y);t.closePath(),t.stroke()}if(this.showLabels){if(t.font=T(this.fontSize,this.fontStyle,this.fontFamily),this.showLabelBackdrop){var h=t.measureText(i).width;t.fillStyle=this.backdropColor,t.fillRect(this.xCenter-h/2-this.backdropPaddingX,o-this.fontSize/2-this.backdropPaddingY,h+2*this.backdropPaddingX,this.fontSize+2*this.backdropPaddingY)}t.textAlign="center",t.textBaseline="middle",t.fillStyle=this.fontColor,t.fillText(i,this.xCenter,o)}}},this),!this.lineArc){t.lineWidth=this.angleLineWidth,t.strokeStyle=this.angleLineColor;for(var i=this.valuesCount-1;i>=0;i--){if(this.angleLineWidth>0){var e=this.getPointPosition(i,this.calculateCenterOffset(this.max));t.beginPath(),t.moveTo(this.xCenter,this.yCenter),t.lineTo(e.x,e.y),t.stroke(),t.closePath()}var s=this.getPointPosition(i,this.calculateCenterOffset(this.max)+5);t.font=T(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily),t.fillStyle=this.pointLabelFontColor;var o=this.labels.length,a=this.labels.length/2,h=a/2,l=h>i||i>o-h,r=i===h||i===o-h;t.textAlign=0===i?"center":i===a?"center":a>i?"left":"right",t.textBaseline=r?"middle":l?"bottom":"top",t.fillText(this.labels[i],s.x,s.y)}}}}}),s.addEvent(window,"resize",function(){var t;return function(){clearTimeout(t),t=setTimeout(function(){n(e.instances,function(t){t.options.responsive&&t.resize(t.render,!0)})},50)}}()),p&&define(function(){return e}),t.Chart=e,e.noConflict=function(){return t.Chart=i,e}}).call(this),function(){"use strict";var t=this,i=t.Chart,e=i.helpers,s={scaleBeginAtZero:!0,scaleShowGridLines:!0,scaleGridLineColor:"rgba(0,0,0,.05)",scaleGridLineWidth:1,barShowStroke:!0,barStrokeWidth:2,barValueSpacing:5,barDatasetSpacing:1,legendTemplate:'<ul class="<%=name.toLowerCase()%>-legend"><% for (var i=0; i<datasets.length; i++){%><li><span style="background-color:<%=datasets[i].fillColor%>"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>'};i.Type.extend({name:"Bar",defaults:s,initialize:function(t){var s=this.options;this.ScaleClass=i.Scale.extend({offsetGridLines:!0,calculateBarX:function(t,i,e){var n=this.calculateBaseWidth(),o=this.calculateX(e)-n/2,a=this.calculateBarWidth(t);return o+a*i+i*s.barDatasetSpacing+a/2},calculateBaseWidth:function(){return this.calculateX(1)-this.calculateX(0)-2*s.barValueSpacing},calculateBarWidth:function(t){var i=this.calculateBaseWidth()-(t-1)*s.barDatasetSpacing;return i/t}}),this.datasets=[],this.options.showTooltips&&e.bindEvents(this,this.options.tooltipEvents,function(t){var i="mouseout"!==t.type?this.getBarsAtEvent(t):[];this.eachBars(function(t){t.restore(["fillColor","strokeColor"])}),e.each(i,function(t){t.fillColor=t.highlightFill,t.strokeColor=t.highlightStroke}),this.showTooltip(i)}),this.BarClass=i.Rectangle.extend({strokeWidth:this.options.barStrokeWidth,showStroke:this.options.barShowStroke,ctx:this.chart.ctx}),e.each(t.datasets,function(i){var s={label:i.label||null,fillColor:i.fillColor,strokeColor:i.strokeColor,bars:[]};this.datasets.push(s),e.each(i.data,function(n,o){e.isNumber(n)&&s.bars.push(new this.BarClass({value:n,label:t.labels[o],strokeColor:i.strokeColor,fillColor:i.fillColor,highlightFill:i.highlightFill||i.fillColor,highlightStroke:i.highlightStroke||i.strokeColor}))},this)},this),this.buildScale(t.labels),this.BarClass.prototype.base=this.scale.endPoint,this.eachBars(function(t,i,s){e.extend(t,{width:this.scale.calculateBarWidth(this.datasets.length),x:this.scale.calculateBarX(this.datasets.length,s,i),y:this.scale.endPoint}),t.save()},this),this.render()},update:function(){this.scale.update(),e.each(this.activeElements,function(t){t.restore(["fillColor","strokeColor"])}),this.eachBars(function(t){t.save()}),this.render()},eachBars:function(t){e.each(this.datasets,function(i,s){e.each(i.bars,t,this,s)},this)},getBarsAtEvent:function(t){for(var i,s=[],n=e.getRelativePosition(t),o=function(t){s.push(t.bars[i])},a=0;a<this.datasets.length;a++)for(i=0;i<this.datasets[a].bars.length;i++)if(this.datasets[a].bars[i].inRange(n.x,n.y))return e.each(this.datasets,o),s;return s},buildScale:function(t){var i=this,s=function(){var t=[];return i.eachBars(function(i){t.push(i.value)}),t},n={templateString:this.options.scaleLabel,height:this.chart.height,width:this.chart.width,ctx:this.chart.ctx,textColor:this.options.scaleFontColor,fontSize:this.options.scaleFontSize,fontStyle:this.options.scaleFontStyle,fontFamily:this.options.scaleFontFamily,valuesCount:t.length,beginAtZero:this.options.scaleBeginAtZero,integersOnly:this.options.scaleIntegersOnly,calculateYRange:function(t){var i=e.calculateScaleRange(s(),t,this.fontSize,this.beginAtZero,this.integersOnly);e.extend(this,i)},xLabels:t,font:e.fontString(this.options.scaleFontSize,this.options.scaleFontStyle,this.options.scaleFontFamily),lineWidth:this.options.scaleLineWidth,lineColor:this.options.scaleLineColor,gridLineWidth:this.options.scaleShowGridLines?this.options.scaleGridLineWidth:0,gridLineColor:this.options.scaleShowGridLines?this.options.scaleGridLineColor:"rgba(0,0,0,0)",padding:this.options.showScale?0:this.options.barShowStroke?this.options.barStrokeWidth:0,showLabels:this.options.scaleShowLabels,display:this.options.showScale};this.options.scaleOverride&&e.extend(n,{calculateYRange:e.noop,steps:this.options.scaleSteps,stepValue:this.options.scaleStepWidth,min:this.options.scaleStartValue,max:this.options.scaleStartValue+this.options.scaleSteps*this.options.scaleStepWidth}),this.scale=new this.ScaleClass(n)},addData:function(t,i){e.each(t,function(t,s){e.isNumber(t)&&this.datasets[s].bars.push(new this.BarClass({value:t,label:i,x:this.scale.calculateBarX(this.datasets.length,s,this.scale.valuesCount+1),y:this.scale.endPoint,width:this.scale.calculateBarWidth(this.datasets.length),base:this.scale.endPoint,strokeColor:this.datasets[s].strokeColor,fillColor:this.datasets[s].fillColor}))},this),this.scale.addXLabel(i),this.update()},removeData:function(){this.scale.removeXLabel(),e.each(this.datasets,function(t){t.bars.shift()},this),this.update()},reflow:function(){e.extend(this.BarClass.prototype,{y:this.scale.endPoint,base:this.scale.endPoint});var t=e.extend({height:this.chart.height,width:this.chart.width});this.scale.update(t)},draw:function(t){var i=t||1;this.clear();this.chart.ctx;this.scale.draw(i),e.each(this.datasets,function(t,s){e.each(t.bars,function(t,e){t.base=this.scale.endPoint,t.transition({x:this.scale.calculateBarX(this.datasets.length,s,e),y:this.scale.calculateY(t.value),width:this.scale.calculateBarWidth(this.datasets.length)},i).draw()},this)},this)}})}.call(this),function(){"use strict";var t=this,i=t.Chart,e=i.helpers,s={segmentShowStroke:!0,segmentStrokeColor:"#fff",segmentStrokeWidth:2,percentageInnerCutout:50,animationSteps:100,animationEasing:"easeOutBounce",animateRotate:!0,animateScale:!1,legendTemplate:'<ul class="<%=name.toLowerCase()%>-legend"><% for (var i=0; i<segments.length; i++){%><li><span style="background-color:<%=segments[i].fillColor%>"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>'};i.Type.extend({name:"Doughnut",defaults:s,initialize:function(t){this.segments=[],this.outerRadius=(e.min([this.chart.width,this.chart.height])-this.options.segmentStrokeWidth/2)/2,this.SegmentArc=i.Arc.extend({ctx:this.chart.ctx,x:this.chart.width/2,y:this.chart.height/2}),this.options.showTooltips&&e.bindEvents(this,this.options.tooltipEvents,function(t){var i="mouseout"!==t.type?this.getSegmentsAtEvent(t):[];
+e.each(this.segments,function(t){t.restore(["fillColor"])}),e.each(i,function(t){t.fillColor=t.highlightColor}),this.showTooltip(i)}),this.calculateTotal(t),e.each(t,function(t,i){this.addData(t,i,!0)},this),this.render()},getSegmentsAtEvent:function(t){var i=[],s=e.getRelativePosition(t);return e.each(this.segments,function(t){t.inRange(s.x,s.y)&&i.push(t)},this),i},addData:function(t,i,e){var s=i||this.segments.length;this.segments.splice(s,0,new this.SegmentArc({value:t.value,outerRadius:this.options.animateScale?0:this.outerRadius,innerRadius:this.options.animateScale?0:this.outerRadius/100*this.options.percentageInnerCutout,fillColor:t.color,highlightColor:t.highlight||t.color,showStroke:this.options.segmentShowStroke,strokeWidth:this.options.segmentStrokeWidth,strokeColor:this.options.segmentStrokeColor,startAngle:1.5*Math.PI,circumference:this.options.animateRotate?0:this.calculateCircumference(t.value),label:t.label})),e||(this.reflow(),this.update())},calculateCircumference:function(t){return 2*Math.PI*(t/this.total)},calculateTotal:function(t){this.total=0,e.each(t,function(t){this.total+=t.value},this)},update:function(){this.calculateTotal(this.segments),e.each(this.activeElements,function(t){t.restore(["fillColor"])}),e.each(this.segments,function(t){t.save()}),this.render()},removeData:function(t){var i=e.isNumber(t)?t:this.segments.length-1;this.segments.splice(i,1),this.reflow(),this.update()},reflow:function(){e.extend(this.SegmentArc.prototype,{x:this.chart.width/2,y:this.chart.height/2}),this.outerRadius=(e.min([this.chart.width,this.chart.height])-this.options.segmentStrokeWidth/2)/2,e.each(this.segments,function(t){t.update({outerRadius:this.outerRadius,innerRadius:this.outerRadius/100*this.options.percentageInnerCutout})},this)},draw:function(t){var i=t?t:1;this.clear(),e.each(this.segments,function(t,e){t.transition({circumference:this.calculateCircumference(t.value),outerRadius:this.outerRadius,innerRadius:this.outerRadius/100*this.options.percentageInnerCutout},i),t.endAngle=t.startAngle+t.circumference,t.draw(),0===e&&(t.startAngle=1.5*Math.PI),e<this.segments.length-1&&(this.segments[e+1].startAngle=t.endAngle)},this)}}),i.types.Doughnut.extend({name:"Pie",defaults:e.merge(s,{percentageInnerCutout:0})})}.call(this),function(){"use strict";var t=this,i=t.Chart,e=i.helpers,s={scaleShowGridLines:!0,scaleGridLineColor:"rgba(0,0,0,.05)",scaleGridLineWidth:1,bezierCurve:!0,bezierCurveTension:.4,pointDot:!0,pointDotRadius:4,pointDotStrokeWidth:1,pointHitDetectionRadius:20,datasetStroke:!0,datasetStrokeWidth:2,datasetFill:!0,legendTemplate:'<ul class="<%=name.toLowerCase()%>-legend"><% for (var i=0; i<datasets.length; i++){%><li><span style="background-color:<%=datasets[i].strokeColor%>"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>'};i.Type.extend({name:"Line",defaults:s,initialize:function(t){this.PointClass=i.Point.extend({strokeWidth:this.options.pointDotStrokeWidth,radius:this.options.pointDotRadius,hitDetectionRadius:this.options.pointHitDetectionRadius,ctx:this.chart.ctx,inRange:function(t){return Math.pow(t-this.x,2)<Math.pow(this.radius+this.hitDetectionRadius,2)}}),this.datasets=[],this.options.showTooltips&&e.bindEvents(this,this.options.tooltipEvents,function(t){var i="mouseout"!==t.type?this.getPointsAtEvent(t):[];this.eachPoints(function(t){t.restore(["fillColor","strokeColor"])}),e.each(i,function(t){t.fillColor=t.highlightFill,t.strokeColor=t.highlightStroke}),this.showTooltip(i)}),e.each(t.datasets,function(i){var s={label:i.label||null,fillColor:i.fillColor,strokeColor:i.strokeColor,pointColor:i.pointColor,pointStrokeColor:i.pointStrokeColor,points:[]};this.datasets.push(s),e.each(i.data,function(n,o){e.isNumber(n)&&s.points.push(new this.PointClass({value:n,label:t.labels[o],strokeColor:i.pointStrokeColor,fillColor:i.pointColor,highlightFill:i.pointHighlightFill||i.pointColor,highlightStroke:i.pointHighlightStroke||i.pointStrokeColor}))},this),this.buildScale(t.labels),this.eachPoints(function(t,i){e.extend(t,{x:this.scale.calculateX(i),y:this.scale.endPoint}),t.save()},this)},this),this.render()},update:function(){this.scale.update(),e.each(this.activeElements,function(t){t.restore(["fillColor","strokeColor"])}),this.eachPoints(function(t){t.save()}),this.render()},eachPoints:function(t){e.each(this.datasets,function(i){e.each(i.points,t,this)},this)},getPointsAtEvent:function(t){var i=[],s=e.getRelativePosition(t);return e.each(this.datasets,function(t){e.each(t.points,function(t){t.inRange(s.x,s.y)&&i.push(t)})},this),i},buildScale:function(t){var s=this,n=function(){var t=[];return s.eachPoints(function(i){t.push(i.value)}),t},o={templateString:this.options.scaleLabel,height:this.chart.height,width:this.chart.width,ctx:this.chart.ctx,textColor:this.options.scaleFontColor,fontSize:this.options.scaleFontSize,fontStyle:this.options.scaleFontStyle,fontFamily:this.options.scaleFontFamily,valuesCount:t.length,beginAtZero:this.options.scaleBeginAtZero,integersOnly:this.options.scaleIntegersOnly,calculateYRange:function(t){var i=e.calculateScaleRange(n(),t,this.fontSize,this.beginAtZero,this.integersOnly);e.extend(this,i)},xLabels:t,font:e.fontString(this.options.scaleFontSize,this.options.scaleFontStyle,this.options.scaleFontFamily),lineWidth:this.options.scaleLineWidth,lineColor:this.options.scaleLineColor,gridLineWidth:this.options.scaleShowGridLines?this.options.scaleGridLineWidth:0,gridLineColor:this.options.scaleShowGridLines?this.options.scaleGridLineColor:"rgba(0,0,0,0)",padding:this.options.showScale?0:this.options.pointDotRadius+this.options.pointDotStrokeWidth,showLabels:this.options.scaleShowLabels,display:this.options.showScale};this.options.scaleOverride&&e.extend(o,{calculateYRange:e.noop,steps:this.options.scaleSteps,stepValue:this.options.scaleStepWidth,min:this.options.scaleStartValue,max:this.options.scaleStartValue+this.options.scaleSteps*this.options.scaleStepWidth}),this.scale=new i.Scale(o)},addData:function(t,i){e.each(t,function(t,s){e.isNumber(t)&&this.datasets[s].points.push(new this.PointClass({value:t,label:i,x:this.scale.calculateX(this.scale.valuesCount+1),y:this.scale.endPoint,strokeColor:this.datasets[s].pointStrokeColor,fillColor:this.datasets[s].pointColor}))},this),this.scale.addXLabel(i),this.update()},removeData:function(){this.scale.removeXLabel(),e.each(this.datasets,function(t){t.points.shift()},this),this.update()},reflow:function(){var t=e.extend({height:this.chart.height,width:this.chart.width});this.scale.update(t)},draw:function(t){var i=t||1;this.clear();var s=this.chart.ctx;this.scale.draw(i),e.each(this.datasets,function(t){e.each(t.points,function(t,e){t.transition({y:this.scale.calculateY(t.value),x:this.scale.calculateX(e)},i)},this),this.options.bezierCurve&&e.each(t.points,function(i,s){i.controlPoints=0===s?e.splineCurve(i,i,t.points[s+1],0):s>=t.points.length-1?e.splineCurve(t.points[s-1],i,i,0):e.splineCurve(t.points[s-1],i,t.points[s+1],this.options.bezierCurveTension)},this),s.lineWidth=this.options.datasetStrokeWidth,s.strokeStyle=t.strokeColor,s.beginPath(),e.each(t.points,function(i,e){e>0?this.options.bezierCurve?s.bezierCurveTo(t.points[e-1].controlPoints.outer.x,t.points[e-1].controlPoints.outer.y,i.controlPoints.inner.x,i.controlPoints.inner.y,i.x,i.y):s.lineTo(i.x,i.y):s.moveTo(i.x,i.y)},this),s.stroke(),this.options.datasetFill&&(s.lineTo(t.points[t.points.length-1].x,this.scale.endPoint),s.lineTo(this.scale.calculateX(0),this.scale.endPoint),s.fillStyle=t.fillColor,s.closePath(),s.fill()),e.each(t.points,function(t){t.draw()})},this)}})}.call(this),function(){"use strict";var t=this,i=t.Chart,e=i.helpers,s={scaleShowLabelBackdrop:!0,scaleBackdropColor:"rgba(255,255,255,0.75)",scaleBeginAtZero:!0,scaleBackdropPaddingY:2,scaleBackdropPaddingX:2,scaleShowLine:!0,segmentShowStroke:!0,segmentStrokeColor:"#fff",segmentStrokeWidth:2,animationSteps:100,animationEasing:"easeOutBounce",animateRotate:!0,animateScale:!1,legendTemplate:'<ul class="<%=name.toLowerCase()%>-legend"><% for (var i=0; i<segments.length; i++){%><li><span style="background-color:<%=segments[i].fillColor%>"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>'};i.Type.extend({name:"PolarArea",defaults:s,initialize:function(t){this.segments=[],this.SegmentArc=i.Arc.extend({showStroke:this.options.segmentShowStroke,strokeWidth:this.options.segmentStrokeWidth,strokeColor:this.options.segmentStrokeColor,ctx:this.chart.ctx,innerRadius:0,x:this.chart.width/2,y:this.chart.height/2}),this.scale=new i.RadialScale({display:this.options.showScale,fontStyle:this.options.scaleFontStyle,fontSize:this.options.scaleFontSize,fontFamily:this.options.scaleFontFamily,fontColor:this.options.scaleFontColor,showLabels:this.options.scaleShowLabels,showLabelBackdrop:this.options.scaleShowLabelBackdrop,backdropColor:this.options.scaleBackdropColor,backdropPaddingY:this.options.scaleBackdropPaddingY,backdropPaddingX:this.options.scaleBackdropPaddingX,lineWidth:this.options.scaleShowLine?this.options.scaleLineWidth:0,lineColor:this.options.scaleLineColor,lineArc:!0,width:this.chart.width,height:this.chart.height,xCenter:this.chart.width/2,yCenter:this.chart.height/2,ctx:this.chart.ctx,templateString:this.options.scaleLabel,valuesCount:t.length}),this.updateScaleRange(t),this.scale.update(),e.each(t,function(t,i){this.addData(t,i,!0)},this),this.options.showTooltips&&e.bindEvents(this,this.options.tooltipEvents,function(t){var i="mouseout"!==t.type?this.getSegmentsAtEvent(t):[];e.each(this.segments,function(t){t.restore(["fillColor"])}),e.each(i,function(t){t.fillColor=t.highlightColor}),this.showTooltip(i)}),this.render()},getSegmentsAtEvent:function(t){var i=[],s=e.getRelativePosition(t);return e.each(this.segments,function(t){t.inRange(s.x,s.y)&&i.push(t)},this),i},addData:function(t,i,e){var s=i||this.segments.length;this.segments.splice(s,0,new this.SegmentArc({fillColor:t.color,highlightColor:t.highlight||t.color,label:t.label,value:t.value,outerRadius:this.options.animateScale?0:this.scale.calculateCenterOffset(t.value),circumference:this.options.animateRotate?0:this.scale.getCircumference(),startAngle:1.5*Math.PI})),e||(this.reflow(),this.update())},removeData:function(t){var i=e.isNumber(t)?t:this.segments.length-1;this.segments.splice(i,1),this.reflow(),this.update()},calculateTotal:function(t){this.total=0,e.each(t,function(t){this.total+=t.value},this),this.scale.valuesCount=this.segments.length},updateScaleRange:function(t){var i=[];e.each(t,function(t){i.push(t.value)});var s=this.options.scaleOverride?{steps:this.options.scaleSteps,stepValue:this.options.scaleStepWidth,min:this.options.scaleStartValue,max:this.options.scaleStartValue+this.options.scaleSteps*this.options.scaleStepWidth}:e.calculateScaleRange(i,e.min([this.chart.width,this.chart.height])/2,this.options.scaleFontSize,this.options.scaleBeginAtZero,this.options.scaleIntegersOnly);e.extend(this.scale,s,{size:e.min([this.chart.width,this.chart.height]),xCenter:this.chart.width/2,yCenter:this.chart.height/2})},update:function(){this.calculateTotal(this.segments),e.each(this.segments,function(t){t.save()}),this.render()},reflow:function(){e.extend(this.SegmentArc.prototype,{x:this.chart.width/2,y:this.chart.height/2}),this.updateScaleRange(this.segments),this.scale.update(),e.extend(this.scale,{xCenter:this.chart.width/2,yCenter:this.chart.height/2}),e.each(this.segments,function(t){t.update({outerRadius:this.scale.calculateCenterOffset(t.value)})},this)},draw:function(t){var i=t||1;this.clear(),e.each(this.segments,function(t,e){t.transition({circumference:this.scale.getCircumference(),outerRadius:this.scale.calculateCenterOffset(t.value)},i),t.endAngle=t.startAngle+t.circumference,0===e&&(t.startAngle=1.5*Math.PI),e<this.segments.length-1&&(this.segments[e+1].startAngle=t.endAngle),t.draw()},this),this.scale.draw()}})}.call(this),function(){"use strict";var t=this,i=t.Chart,e=i.helpers;i.Type.extend({name:"Radar",defaults:{scaleShowLine:!0,angleShowLineOut:!0,scaleShowLabels:!1,scaleBeginAtZero:!0,angleLineColor:"rgba(0,0,0,.1)",angleLineWidth:1,pointLabelFontFamily:"'Arial'",pointLabelFontStyle:"normal",pointLabelFontSize:10,pointLabelFontColor:"#666",pointDot:!0,pointDotRadius:3,pointDotStrokeWidth:1,pointHitDetectionRadius:20,datasetStroke:!0,datasetStrokeWidth:2,datasetFill:!0,legendTemplate:'<ul class="<%=name.toLowerCase()%>-legend"><% for (var i=0; i<datasets.length; i++){%><li><span style="background-color:<%=datasets[i].strokeColor%>"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>'},initialize:function(t){this.PointClass=i.Point.extend({strokeWidth:this.options.pointDotStrokeWidth,radius:this.options.pointDotRadius,hitDetectionRadius:this.options.pointHitDetectionRadius,ctx:this.chart.ctx}),this.datasets=[],this.buildScale(t),this.options.showTooltips&&e.bindEvents(this,this.options.tooltipEvents,function(t){var i="mouseout"!==t.type?this.getPointsAtEvent(t):[];this.eachPoints(function(t){t.restore(["fillColor","strokeColor"])}),e.each(i,function(t){t.fillColor=t.highlightFill,t.strokeColor=t.highlightStroke}),this.showTooltip(i)}),e.each(t.datasets,function(i){var s={label:i.label||null,fillColor:i.fillColor,strokeColor:i.strokeColor,pointColor:i.pointColor,pointStrokeColor:i.pointStrokeColor,points:[]};this.datasets.push(s),e.each(i.data,function(n,o){if(e.isNumber(n)){var a;this.scale.animation||(a=this.scale.getPointPosition(o,this.scale.calculateCenterOffset(n))),s.points.push(new this.PointClass({value:n,label:t.labels[o],x:this.options.animation?this.scale.xCenter:a.x,y:this.options.animation?this.scale.yCenter:a.y,strokeColor:i.pointStrokeColor,fillColor:i.pointColor,highlightFill:i.pointHighlightFill||i.pointColor,highlightStroke:i.pointHighlightStroke||i.pointStrokeColor}))}},this)},this),this.render()},eachPoints:function(t){e.each(this.datasets,function(i){e.each(i.points,t,this)},this)},getPointsAtEvent:function(t){var i=e.getRelativePosition(t),s=e.getAngleFromPoint({x:this.scale.xCenter,y:this.scale.yCenter},i),n=2*Math.PI/this.scale.valuesCount,o=Math.round((s.angle-1.5*Math.PI)/n),a=[];return(o>=this.scale.valuesCount||0>o)&&(o=0),s.distance<=this.scale.drawingArea&&e.each(this.datasets,function(t){a.push(t.points[o])}),a},buildScale:function(t){this.scale=new i.RadialScale({display:this.options.showScale,fontStyle:this.options.scaleFontStyle,fontSize:this.options.scaleFontSize,fontFamily:this.options.scaleFontFamily,fontColor:this.options.scaleFontColor,showLabels:this.options.scaleShowLabels,showLabelBackdrop:this.options.scaleShowLabelBackdrop,backdropColor:this.options.scaleBackdropColor,backdropPaddingY:this.options.scaleBackdropPaddingY,backdropPaddingX:this.options.scaleBackdropPaddingX,lineWidth:this.options.scaleShowLine?this.options.scaleLineWidth:0,lineColor:this.options.scaleLineColor,angleLineColor:this.options.angleLineColor,angleLineWidth:this.options.angleShowLineOut?this.options.angleLineWidth:0,pointLabelFontColor:this.options.pointLabelFontColor,pointLabelFontSize:this.options.pointLabelFontSize,pointLabelFontFamily:this.options.pointLabelFontFamily,pointLabelFontStyle:this.options.pointLabelFontStyle,height:this.chart.height,width:this.chart.width,xCenter:this.chart.width/2,yCenter:this.chart.height/2,ctx:this.chart.ctx,templateString:this.options.scaleLabel,labels:t.labels,valuesCount:t.datasets[0].data.length}),this.scale.setScaleSize(),this.updateScaleRange(t.datasets),this.scale.buildYLabels()},updateScaleRange:function(t){var i=function(){var i=[];return e.each(t,function(t){t.data?i=i.concat(t.data):e.each(t.points,function(t){i.push(t.value)})}),i}(),s=this.options.scaleOverride?{steps:this.options.scaleSteps,stepValue:this.options.scaleStepWidth,min:this.options.scaleStartValue,max:this.options.scaleStartValue+this.options.scaleSteps*this.options.scaleStepWidth}:e.calculateScaleRange(i,e.min([this.chart.width,this.chart.height])/2,this.options.scaleFontSize,this.options.scaleBeginAtZero,this.options.scaleIntegersOnly);e.extend(this.scale,s)},addData:function(t,i){this.scale.valuesCount++,e.each(t,function(t,s){if(e.isNumber(t)){var n=this.scale.getPointPosition(this.scale.valuesCount,this.scale.calculateCenterOffset(t));this.datasets[s].points.push(new this.PointClass({value:t,label:i,x:n.x,y:n.y,strokeColor:this.datasets[s].pointStrokeColor,fillColor:this.datasets[s].pointColor}))}},this),this.scale.labels.push(i),this.reflow(),this.update()},removeData:function(){this.scale.valuesCount--,this.scale.labels.shift(),e.each(this.datasets,function(t){t.points.shift()},this),this.reflow(),this.update()},update:function(){this.eachPoints(function(t){t.save()}),this.render()},reflow:function(){e.extend(this.scale,{width:this.chart.width,height:this.chart.height,size:e.min([this.chart.width,this.chart.height]),xCenter:this.chart.width/2,yCenter:this.chart.height/2}),this.updateScaleRange(this.datasets),this.scale.setScaleSize(),this.scale.buildYLabels()},draw:function(t){var i=t||1,s=this.chart.ctx;this.clear(),this.scale.draw(),e.each(this.datasets,function(t){e.each(t.points,function(t,e){t.transition(this.scale.getPointPosition(e,this.scale.calculateCenterOffset(t.value)),i)},this),s.lineWidth=this.options.datasetStrokeWidth,s.strokeStyle=t.strokeColor,s.beginPath(),e.each(t.points,function(t,i){0===i?s.moveTo(t.x,t.y):s.lineTo(t.x,t.y)},this),s.closePath(),s.stroke(),s.fillStyle=t.fillColor,s.fill(),e.each(t.points,function(t){t.draw()})},this)}})}.call(this);
\ No newline at end of file
--- /dev/null
+(function(){
+ "use strict";
+
+ var root = this,
+ Chart = root.Chart,
+ helpers = Chart.helpers;
+
+
+ var defaultConfig = {
+ //Boolean - Whether the scale should start at zero, or an order of magnitude down from the lowest value
+ scaleBeginAtZero : true,
+
+ //Boolean - Whether grid lines are shown across the chart
+ scaleShowGridLines : true,
+
+ //String - Colour of the grid lines
+ scaleGridLineColor : "rgba(0,0,0,.05)",
+
+ //Number - Width of the grid lines
+ scaleGridLineWidth : 1,
+
+ //Boolean - If there is a stroke on each bar
+ barShowStroke : true,
+
+ //Number - Pixel width of the bar stroke
+ barStrokeWidth : 2,
+
+ //Number - Spacing between each of the X value sets
+ barValueSpacing : 5,
+
+ //Number - Spacing between data sets within X values
+ barDatasetSpacing : 1,
+
+ //String - A legend template
+ legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].fillColor%>\"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>"
+
+ };
+
+
+ Chart.Type.extend({
+ name: "Bar",
+ defaults : defaultConfig,
+ initialize: function(data){
+
+ //Expose options as a scope variable here so we can access it in the ScaleClass
+ var options = this.options;
+
+ this.ScaleClass = Chart.Scale.extend({
+ offsetGridLines : true,
+ calculateBarX : function(datasetCount, datasetIndex, barIndex){
+ //Reusable method for calculating the xPosition of a given bar based on datasetIndex & width of the bar
+ var xWidth = this.calculateBaseWidth(),
+ xAbsolute = this.calculateX(barIndex) - (xWidth/2),
+ barWidth = this.calculateBarWidth(datasetCount);
+
+ return xAbsolute + (barWidth * datasetIndex) + (datasetIndex * options.barDatasetSpacing) + barWidth/2;
+ },
+ calculateBaseWidth : function(){
+ return (this.calculateX(1) - this.calculateX(0)) - (2*options.barValueSpacing);
+ },
+ calculateBarWidth : function(datasetCount){
+ //The padding between datasets is to the right of each bar, providing that there are more than 1 dataset
+ var baseWidth = this.calculateBaseWidth() - ((datasetCount - 1) * options.barDatasetSpacing);
+
+ return (baseWidth / datasetCount);
+ }
+ });
+
+ this.datasets = [];
+
+ //Set up tooltip events on the chart
+ if (this.options.showTooltips){
+ helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
+ var activeBars = (evt.type !== 'mouseout') ? this.getBarsAtEvent(evt) : [];
+
+ this.eachBars(function(bar){
+ bar.restore(['fillColor', 'strokeColor']);
+ });
+ helpers.each(activeBars, function(activeBar){
+ activeBar.fillColor = activeBar.highlightFill;
+ activeBar.strokeColor = activeBar.highlightStroke;
+ });
+ this.showTooltip(activeBars);
+ });
+ }
+
+ //Declare the extension of the default point, to cater for the options passed in to the constructor
+ this.BarClass = Chart.Rectangle.extend({
+ strokeWidth : this.options.barStrokeWidth,
+ showStroke : this.options.barShowStroke,
+ ctx : this.chart.ctx
+ });
+
+ //Iterate through each of the datasets, and build this into a property of the chart
+ helpers.each(data.datasets,function(dataset,datasetIndex){
+
+ var datasetObject = {
+ label : dataset.label || null,
+ fillColor : dataset.fillColor,
+ strokeColor : dataset.strokeColor,
+ bars : []
+ };
+
+ this.datasets.push(datasetObject);
+
+ helpers.each(dataset.data,function(dataPoint,index){
+ if (helpers.isNumber(dataPoint)){
+ //Add a new point for each piece of data, passing any required data to draw.
+ datasetObject.bars.push(new this.BarClass({
+ value : dataPoint,
+ label : data.labels[index],
+ strokeColor : dataset.strokeColor,
+ fillColor : dataset.fillColor,
+ highlightFill : dataset.highlightFill || dataset.fillColor,
+ highlightStroke : dataset.highlightStroke || dataset.strokeColor
+ }));
+ }
+ },this);
+
+ },this);
+
+ this.buildScale(data.labels);
+
+ this.BarClass.prototype.base = this.scale.endPoint;
+
+ this.eachBars(function(bar, index, datasetIndex){
+ helpers.extend(bar, {
+ width : this.scale.calculateBarWidth(this.datasets.length),
+ x: this.scale.calculateBarX(this.datasets.length, datasetIndex, index),
+ y: this.scale.endPoint
+ });
+ bar.save();
+ }, this);
+
+ this.render();
+ },
+ update : function(){
+ this.scale.update();
+ // Reset any highlight colours before updating.
+ helpers.each(this.activeElements, function(activeElement){
+ activeElement.restore(['fillColor', 'strokeColor']);
+ });
+
+ this.eachBars(function(bar){
+ bar.save();
+ });
+ this.render();
+ },
+ eachBars : function(callback){
+ helpers.each(this.datasets,function(dataset, datasetIndex){
+ helpers.each(dataset.bars, callback, this, datasetIndex);
+ },this);
+ },
+ getBarsAtEvent : function(e){
+ var barsArray = [],
+ eventPosition = helpers.getRelativePosition(e),
+ datasetIterator = function(dataset){
+ barsArray.push(dataset.bars[barIndex]);
+ },
+ barIndex;
+
+ for (var datasetIndex = 0; datasetIndex < this.datasets.length; datasetIndex++) {
+ for (barIndex = 0; barIndex < this.datasets[datasetIndex].bars.length; barIndex++) {
+ if (this.datasets[datasetIndex].bars[barIndex].inRange(eventPosition.x,eventPosition.y)){
+ helpers.each(this.datasets, datasetIterator);
+ return barsArray;
+ }
+ }
+ }
+
+ return barsArray;
+ },
+ buildScale : function(labels){
+ var self = this;
+
+ var dataTotal = function(){
+ var values = [];
+ self.eachBars(function(bar){
+ values.push(bar.value);
+ });
+ return values;
+ };
+
+ var scaleOptions = {
+ templateString : this.options.scaleLabel,
+ height : this.chart.height,
+ width : this.chart.width,
+ ctx : this.chart.ctx,
+ textColor : this.options.scaleFontColor,
+ fontSize : this.options.scaleFontSize,
+ fontStyle : this.options.scaleFontStyle,
+ fontFamily : this.options.scaleFontFamily,
+ valuesCount : labels.length,
+ beginAtZero : this.options.scaleBeginAtZero,
+ integersOnly : this.options.scaleIntegersOnly,
+ calculateYRange: function(currentHeight){
+ var updatedRanges = helpers.calculateScaleRange(
+ dataTotal(),
+ currentHeight,
+ this.fontSize,
+ this.beginAtZero,
+ this.integersOnly
+ );
+ helpers.extend(this, updatedRanges);
+ },
+ xLabels : labels,
+ font : helpers.fontString(this.options.scaleFontSize, this.options.scaleFontStyle, this.options.scaleFontFamily),
+ lineWidth : this.options.scaleLineWidth,
+ lineColor : this.options.scaleLineColor,
+ gridLineWidth : (this.options.scaleShowGridLines) ? this.options.scaleGridLineWidth : 0,
+ gridLineColor : (this.options.scaleShowGridLines) ? this.options.scaleGridLineColor : "rgba(0,0,0,0)",
+ padding : (this.options.showScale) ? 0 : (this.options.barShowStroke) ? this.options.barStrokeWidth : 0,
+ showLabels : this.options.scaleShowLabels,
+ display : this.options.showScale
+ };
+
+ if (this.options.scaleOverride){
+ helpers.extend(scaleOptions, {
+ calculateYRange: helpers.noop,
+ steps: this.options.scaleSteps,
+ stepValue: this.options.scaleStepWidth,
+ min: this.options.scaleStartValue,
+ max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
+ });
+ }
+
+ this.scale = new this.ScaleClass(scaleOptions);
+ },
+ addData : function(valuesArray,label){
+ //Map the values array for each of the datasets
+ helpers.each(valuesArray,function(value,datasetIndex){
+ if (helpers.isNumber(value)){
+ //Add a new point for each piece of data, passing any required data to draw.
+ this.datasets[datasetIndex].bars.push(new this.BarClass({
+ value : value,
+ label : label,
+ x: this.scale.calculateBarX(this.datasets.length, datasetIndex, this.scale.valuesCount+1),
+ y: this.scale.endPoint,
+ width : this.scale.calculateBarWidth(this.datasets.length),
+ base : this.scale.endPoint,
+ strokeColor : this.datasets[datasetIndex].strokeColor,
+ fillColor : this.datasets[datasetIndex].fillColor
+ }));
+ }
+ },this);
+
+ this.scale.addXLabel(label);
+ //Then re-render the chart.
+ this.update();
+ },
+ removeData : function(){
+ this.scale.removeXLabel();
+ //Then re-render the chart.
+ helpers.each(this.datasets,function(dataset){
+ dataset.bars.shift();
+ },this);
+ this.update();
+ },
+ reflow : function(){
+ helpers.extend(this.BarClass.prototype,{
+ y: this.scale.endPoint,
+ base : this.scale.endPoint
+ });
+ var newScaleProps = helpers.extend({
+ height : this.chart.height,
+ width : this.chart.width
+ });
+ this.scale.update(newScaleProps);
+ },
+ draw : function(ease){
+ var easingDecimal = ease || 1;
+ this.clear();
+
+ var ctx = this.chart.ctx;
+
+ this.scale.draw(easingDecimal);
+
+ //Draw all the bars for each dataset
+ helpers.each(this.datasets,function(dataset,datasetIndex){
+ helpers.each(dataset.bars,function(bar,index){
+ bar.base = this.scale.endPoint;
+ //Transition then draw
+ bar.transition({
+ x : this.scale.calculateBarX(this.datasets.length, datasetIndex, index),
+ y : this.scale.calculateY(bar.value),
+ width : this.scale.calculateBarWidth(this.datasets.length)
+ }, easingDecimal).draw();
+ },this);
+
+ },this);
+ }
+ });
+
+
+}).call(this);
\ No newline at end of file
--- /dev/null
+/*!
+ * Chart.js
+ * http://chartjs.org/
+ *
+ * Copyright 2014 Nick Downie
+ * Released under the MIT license
+ * https://github.com/nnnick/Chart.js/blob/master/LICENSE.md
+ */
+
+
+(function(){
+
+ "use strict";
+
+ //Declare root variable - window in the browser, global on the server
+ var root = this,
+ previous = root.Chart;
+
+ //Occupy the global variable of Chart, and create a simple base class
+ var Chart = function(context){
+ var chart = this;
+ this.canvas = context.canvas;
+
+ this.ctx = context;
+
+ //Variables global to the chart
+ var width = this.width = context.canvas.width;
+ var height = this.height = context.canvas.height;
+ this.aspectRatio = this.width / this.height;
+ //High pixel density displays - multiply the size of the canvas height/width by the device pixel ratio, then scale.
+ helpers.retinaScale(this);
+
+ return this;
+ };
+ //Globally expose the defaults to allow for user updating/changing
+ Chart.defaults = {
+ global: {
+ // Boolean - Whether to animate the chart
+ animation: true,
+
+ // Number - Number of animation steps
+ animationSteps: 60,
+
+ // String - Animation easing effect
+ animationEasing: "easeOutQuart",
+
+ // Boolean - If we should show the scale at all
+ showScale: true,
+
+ // Boolean - If we want to override with a hard coded scale
+ scaleOverride: false,
+
+ // ** Required if scaleOverride is true **
+ // Number - The number of steps in a hard coded scale
+ scaleSteps: null,
+ // Number - The value jump in the hard coded scale
+ scaleStepWidth: null,
+ // Number - The scale starting value
+ scaleStartValue: null,
+
+ // String - Colour of the scale line
+ scaleLineColor: "rgba(0,0,0,.1)",
+
+ // Number - Pixel width of the scale line
+ scaleLineWidth: 1,
+
+ // Boolean - Whether to show labels on the scale
+ scaleShowLabels: true,
+
+ // Interpolated JS string - can access value
+ scaleLabel: "<%=value%>",
+
+ // Boolean - Whether the scale should stick to integers, and not show any floats even if drawing space is there
+ scaleIntegersOnly: true,
+
+ // Boolean - Whether the scale should start at zero, or an order of magnitude down from the lowest value
+ scaleBeginAtZero: false,
+
+ // String - Scale label font declaration for the scale label
+ scaleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
+
+ // Number - Scale label font size in pixels
+ scaleFontSize: 12,
+
+ // String - Scale label font weight style
+ scaleFontStyle: "normal",
+
+ // String - Scale label font colour
+ scaleFontColor: "#666",
+
+ // Boolean - whether or not the chart should be responsive and resize when the browser does.
+ responsive: false,
+
+ // Boolean - Determines whether to draw tooltips on the canvas or not - attaches events to touchmove & mousemove
+ showTooltips: true,
+
+ // Array - Array of string names to attach tooltip events
+ tooltipEvents: ["mousemove", "touchstart", "touchmove", "mouseout"],
+
+ // String - Tooltip background colour
+ tooltipFillColor: "rgba(0,0,0,0.8)",
+
+ // String - Tooltip label font declaration for the scale label
+ tooltipFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
+
+ // Number - Tooltip label font size in pixels
+ tooltipFontSize: 14,
+
+ // String - Tooltip font weight style
+ tooltipFontStyle: "normal",
+
+ // String - Tooltip label font colour
+ tooltipFontColor: "#fff",
+
+ // String - Tooltip title font declaration for the scale label
+ tooltipTitleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
+
+ // Number - Tooltip title font size in pixels
+ tooltipTitleFontSize: 14,
+
+ // String - Tooltip title font weight style
+ tooltipTitleFontStyle: "bold",
+
+ // String - Tooltip title font colour
+ tooltipTitleFontColor: "#fff",
+
+ // Number - pixel width of padding around tooltip text
+ tooltipYPadding: 6,
+
+ // Number - pixel width of padding around tooltip text
+ tooltipXPadding: 6,
+
+ // Number - Size of the caret on the tooltip
+ tooltipCaretSize: 8,
+
+ // Number - Pixel radius of the tooltip border
+ tooltipCornerRadius: 6,
+
+ // Number - Pixel offset from point x to tooltip edge
+ tooltipXOffset: 10,
+
+ // String - Template string for single tooltips
+ tooltipTemplate: "<%if (label){%><%=label%>: <%}%><%= value %>",
+
+ // String - Template string for single tooltips
+ multiTooltipTemplate: "<%= value %>",
+
+ // String - Colour behind the legend colour block
+ multiTooltipKeyBackground: '#fff',
+
+ // Function - Will fire on animation progression.
+ onAnimationProgress: function(){},
+
+ // Function - Will fire on animation completion.
+ onAnimationComplete: function(){}
+
+ }
+ };
+
+ //Create a dictionary of chart types, to allow for extension of existing types
+ Chart.types = {};
+
+ //Global Chart helpers object for utility methods and classes
+ var helpers = Chart.helpers = {};
+
+ //-- Basic js utility methods
+ var each = helpers.each = function(loopable,callback,self){
+ 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;
+ 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)) objClone[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;
+ },
+ merge = helpers.merge = function(base,master){
+ //Merge properties in left object over to a shallow clone of object right.
+ var args = Array.prototype.slice.call(arguments,0);
+ args.unshift({});
+ return extend.apply(null, args);
+ },
+ 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;
+ }
+ },
+ 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);
+
+ ChartElement.__super__ = parent.prototype;
+
+ 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 (window.console && typeof window.console.warn == "function") console.warn(str);
+ },
+ amd = helpers.amd = (typeof root.define == 'function' && root.define.amd),
+ //-- 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 );
+ },
+ cap = helpers.cap = function(valueToCap,maxValue,minValue){
+ if(isNumber(maxValue)) {
+ if( valueToCap > maxValue ) {
+ return maxValue;
+ }
+ }
+ else if(isNumber(minValue)){
+ if ( valueToCap < minValue ){
+ return minValue;
+ }
+ }
+ return valueToCap;
+ },
+ getDecimalPlaces = helpers.getDecimalPlaces = function(num){
+ if (num%1!==0 && isNumber(num)){
+ return num.toString().split(".")[1].length;
+ }
+ else {
+ return 0;
+ }
+ },
+ toRadians = helpers.radians = function(degrees){
+ return degrees * (Math.PI/180);
+ },
+ // 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);
+
+
+ var angle = Math.PI * 2 + Math.atan2(distanceFromYCenter, distanceFromXCenter);
+
+ //If the segment is in the top left quadrant, we need to add another rotation to the angle
+ if (distanceFromXCenter < 0 && distanceFromYCenter < 0){
+ angle += Math.PI*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
+ var d01=Math.sqrt(Math.pow(MiddlePoint.x-FirstPoint.x,2)+Math.pow(MiddlePoint.y-FirstPoint.y,2)),
+ d12=Math.sqrt(Math.pow(AfterPoint.x-MiddlePoint.x,2)+Math.pow(AfterPoint.y-MiddlePoint.y,2)),
+ fa=t*d01/(d01+d12),// scaling factor for triangle Ta
+ fb=t*d12/(d01+d12);
+ return {
+ inner : {
+ x : MiddlePoint.x-fa*(AfterPoint.x-FirstPoint.x),
+ y : MiddlePoint.y-fa*(AfterPoint.y-FirstPoint.y)
+ },
+ outer : {
+ x: MiddlePoint.x+fb*(AfterPoint.x-FirstPoint.x),
+ y : MiddlePoint.y+fb*(AfterPoint.y-FirstPoint.y)
+ }
+ };
+ },
+ calculateOrderOfMagnitude = helpers.calculateOrderOfMagnitude = function(val){
+ return Math.floor(Math.log(val) / Math.LN10);
+ },
+ calculateScaleRange = helpers.calculateScaleRange = function(valuesArray, drawingSize, textSize, startFromZero, integersOnly){
+
+ //Set a minimum step of two - a point at the top of the graph, and a point at the base
+ var minSteps = 2,
+ maxSteps = Math.floor(drawingSize/(textSize * 1.5)),
+ skipFitting = (minSteps >= maxSteps);
+
+ var maxValue = max(valuesArray),
+ minValue = min(valuesArray);
+
+ // We need some degree of seperation here to calculate the scales if all the values are the same
+ // Adding/minusing 0.5 will give us a range of 1.
+ if (maxValue === minValue){
+ maxValue += 0.5;
+ // So we don't end up with a graph with a negative start value if we've said always start from zero
+ if (minValue >= 0.5 && !startFromZero){
+ minValue -= 0.5;
+ }
+ else{
+ // Make up a whole number above the values
+ maxValue += 0.5;
+ }
+ }
+
+ var valueRange = Math.abs(maxValue - minValue),
+ rangeOrderOfMagnitude = calculateOrderOfMagnitude(valueRange),
+ graphMax = Math.ceil(maxValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude),
+ graphMin = (startFromZero) ? 0 : Math.floor(minValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude),
+ graphRange = graphMax - graphMin,
+ stepValue = Math.pow(10, rangeOrderOfMagnitude),
+ numberOfSteps = Math.round(graphRange / stepValue);
+
+ //If we have more space on the graph we'll use it to give more definition to the data
+ while((numberOfSteps > maxSteps || (numberOfSteps * 2) < maxSteps) && !skipFitting) {
+ if(numberOfSteps > maxSteps){
+ stepValue *=2;
+ numberOfSteps = Math.round(graphRange/stepValue);
+ // Don't ever deal with a decimal number of steps - cancel fitting and just use the minimum number of steps.
+ if (numberOfSteps % 1 !== 0){
+ skipFitting = true;
+ }
+ }
+ //We can fit in double the amount of scale points on the scale
+ else{
+ //If user has declared ints only, and the step value isn't a decimal
+ if (integersOnly && rangeOrderOfMagnitude >= 0){
+ //If the user has said integers only, we need to check that making the scale more granular wouldn't make it a float
+ if(stepValue/2 % 1 === 0){
+ stepValue /=2;
+ numberOfSteps = Math.round(graphRange/stepValue);
+ }
+ //If it would make it a float break out of the loop
+ else{
+ break;
+ }
+ }
+ //If the scale doesn't have to be an int, make the scale more granular anyway.
+ else{
+ stepValue /=2;
+ numberOfSteps = Math.round(graphRange/stepValue);
+ }
+
+ }
+ }
+
+ if (skipFitting){
+ numberOfSteps = minSteps;
+ stepValue = graphRange / numberOfSteps;
+ }
+
+ return {
+ steps : numberOfSteps,
+ stepValue : stepValue,
+ min : graphMin,
+ max : graphMin + (numberOfSteps * stepValue)
+ };
+
+ },
+ /* jshint ignore:start */
+ // Blows up jshint errors based on the new Function constructor
+ //Templating methods
+ //Javascript micro templating by John Resig - source at http://ejohn.org/blog/javascript-micro-templating/
+ template = helpers.template = function(templateString, valuesObject){
+ var cache = {};
+ function tmpl(str, data){
+ // Figure out if we're getting a template, or if we need to
+ // load the template - and be sure to cache the result.
+ var fn = !/\W/.test(str) ?
+ cache[str] = cache[str] :
+
+ // Generate a reusable function that will serve as a template
+ // generator (and which will be cached).
+ new Function("obj",
+ "var p=[],print=function(){p.push.apply(p,arguments);};" +
+
+ // Introduce the data as local variables using with(){}
+ "with(obj){p.push('" +
+
+ // Convert the template into pure JavaScript
+ str
+ .replace(/[\r\t\n]/g, " ")
+ .split("<%").join("\t")
+ .replace(/((^|%>)[^\t]*)'/g, "$1\r")
+ .replace(/\t=(.*?)%>/g, "',$1,'")
+ .split("\t").join("');")
+ .split("%>").join("p.push('")
+ .split("\r").join("\\'") +
+ "');}return p.join('');"
+ );
+
+ // Provide some basic currying to the user
+ return data ? fn( data ) : fn;
+ }
+ return tmpl(templateString,valuesObject);
+ },
+ /* jshint ignore:end */
+ generateLabels = helpers.generateLabels = function(templateString,numberOfSteps,graphMin,stepValue){
+ var labelsArray = new Array(numberOfSteps);
+ if (labelTemplateString){
+ each(labelsArray,function(val,index){
+ labelsArray[index] = template(templateString,{value: (graphMin + (stepValue*(index+1)))});
+ });
+ }
+ return labelsArray;
+ },
+ //--Animation methods
+ //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;
+ }
+ },
+ //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);
+ };
+ })(),
+ animationLoop = helpers.animationLoop = function(callback,totalSteps,easingString,onProgress,onComplete,chartInstance){
+
+ var currentStep = 0,
+ easingFunction = easingEffects[easingString] || easingEffects.linear;
+
+ var animationFrame = function(){
+ currentStep++;
+ var stepDecimal = currentStep/totalSteps;
+ var easeDecimal = easingFunction(stepDecimal);
+
+ callback.call(chartInstance,easeDecimal,stepDecimal, currentStep);
+ onProgress.call(chartInstance,easeDecimal,stepDecimal);
+ if (currentStep < totalSteps){
+ chartInstance.animationFrame = requestAnimFrame(animationFrame);
+ } else{
+ onComplete.apply(chartInstance);
+ }
+ };
+ requestAnimFrame(animationFrame);
+ },
+ //-- DOM methods
+ getRelativePosition = helpers.getRelativePosition = function(evt){
+ var mouseX, mouseY;
+ var e = evt.originalEvent || evt,
+ canvas = evt.currentTarget || evt.srcElement,
+ boundingRect = canvas.getBoundingClientRect();
+
+ if (e.touches){
+ mouseX = e.touches[0].clientX - boundingRect.left;
+ mouseY = e.touches[0].clientY - boundingRect.top;
+
+ }
+ else{
+ mouseX = e.clientX - boundingRect.left;
+ mouseY = e.clientY - boundingRect.top;
+ }
+
+ return {
+ x : mouseX,
+ y : mouseY
+ };
+
+ },
+ 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;
+ }
+ },
+ 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;
+ }
+ },
+ 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]);
+ });
+ },
+ unbindEvents = helpers.unbindEvents = function (chartInstance, arrayOfEvents) {
+ each(arrayOfEvents, function(handler,eventName){
+ removeEvent(chartInstance.chart.canvas, eventName, handler);
+ });
+ },
+ getMaximumSize = helpers.getMaximumSize = function(domNode){
+ var container = domNode.parentNode;
+ // TODO = check cross browser stuff with this.
+ return container.clientWidth;
+ },
+ retinaScale = helpers.retinaScale = function(chart){
+ var ctx = chart.ctx,
+ width = chart.canvas.width,
+ height = chart.canvas.height;
+ //console.log(width + " x " + height);
+ if (window.devicePixelRatio) {
+ ctx.canvas.style.width = width + "px";
+ ctx.canvas.style.height = height + "px";
+ ctx.canvas.height = height * window.devicePixelRatio;
+ ctx.canvas.width = width * window.devicePixelRatio;
+ ctx.scale(window.devicePixelRatio, window.devicePixelRatio);
+ }
+ },
+ //-- Canvas methods
+ clear = helpers.clear = function(chart){
+ chart.ctx.clearRect(0,0,chart.width,chart.height);
+ },
+ fontString = helpers.fontString = function(pixelSize,fontStyle,fontFamily){
+ return fontStyle + " " + pixelSize+"px " + fontFamily;
+ },
+ 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;
+ },
+ 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();
+ };
+
+
+ //Store a reference to each instance - allowing us to globally resize chart instances on window resize.
+ //Destroy method on the chart will remove the instance of the chart from this reference.
+ Chart.instances = {};
+
+ Chart.Type = function(data,options,chart){
+ this.options = options;
+ this.chart = chart;
+ this.id = uid();
+ //Add the chart instance to the global namespace
+ Chart.instances[this.id] = this;
+
+ // Initialize is always called when a chart type is created
+ // By default it is a no op, but it should be extended
+ if (options.responsive){
+ this.resize();
+ }
+ this.initialize.call(this,data);
+ };
+
+ //Core methods that'll be a part of every chart type
+ extend(Chart.Type.prototype,{
+ initialize : function(){return this;},
+ clear : function(){
+ clear(this.chart);
+ return this;
+ },
+ stop : function(){
+ // Stops any current animation loop occuring
+ helpers.cancelAnimFrame.call(root, this.animationFrame);
+ return this;
+ },
+ resize : function(callback){
+ this.stop();
+ var canvas = this.chart.canvas,
+ newWidth = getMaximumSize(this.chart.canvas),
+ newHeight = newWidth / this.chart.aspectRatio;
+
+ canvas.width = this.chart.width = newWidth;
+ canvas.height = this.chart.height = newHeight;
+
+ retinaScale(this.chart);
+
+ if (typeof callback === "function"){
+ callback.apply(this, Array.prototype.slice.call(arguments, 1));
+ }
+ return this;
+ },
+ reflow : noop,
+ render : function(reflow){
+ if (reflow){
+ this.reflow();
+ }
+ if (this.options.animation && !reflow){
+ helpers.animationLoop(
+ this.draw,
+ this.options.animationSteps,
+ this.options.animationEasing,
+ this.options.onAnimationProgress,
+ this.options.onAnimationComplete,
+ this
+ );
+ }
+ else{
+ this.draw();
+ this.options.onAnimationComplete.call(this);
+ }
+ return this;
+ },
+ generateLegend : function(){
+ return template(this.options.legendTemplate,this);
+ },
+ destroy : function(){
+ this.clear();
+ unbindEvents(this, this.events);
+ delete Chart.instances[this.id];
+ },
+ showTooltip : function(ChartElements, forceRedraw){
+ // Only redraw the chart if we've actually changed what we're hovering on.
+ if (typeof this.activeElements === 'undefined') this.activeElements = [];
+
+ var isChanged = (function(Elements){
+ var changed = false;
+
+ if (Elements.length !== this.activeElements.length){
+ changed = true;
+ return changed;
+ }
+
+ each(Elements, function(element, index){
+ if (element !== this.activeElements[index]){
+ changed = true;
+ }
+ }, this);
+ return changed;
+ }).call(this, ChartElements);
+
+ if (!isChanged && !forceRedraw){
+ return;
+ }
+ else{
+ this.activeElements = ChartElements;
+ }
+ this.draw();
+ if (ChartElements.length > 0){
+ // If we have multiple datasets, show a MultiTooltip for all of the data points at that index
+ if (this.datasets && this.datasets.length > 1) {
+ var dataArray,
+ dataIndex;
+
+ for (var i = this.datasets.length - 1; i >= 0; i--) {
+ dataArray = this.datasets[i].points || this.datasets[i].bars || this.datasets[i].segments;
+ dataIndex = indexOf(dataArray, ChartElements[0]);
+ if (dataIndex !== -1){
+ break;
+ }
+ }
+ var tooltipLabels = [],
+ tooltipColors = [],
+ medianPosition = (function(index) {
+
+ // Get all the points at that particular index
+ var Elements = [],
+ dataCollection,
+ xPositions = [],
+ yPositions = [],
+ xMax,
+ yMax,
+ xMin,
+ yMin;
+ helpers.each(this.datasets, function(dataset){
+ dataCollection = dataset.points || dataset.bars || dataset.segments;
+ Elements.push(dataCollection[dataIndex]);
+ });
+
+ helpers.each(Elements, function(element) {
+ xPositions.push(element.x);
+ yPositions.push(element.y);
+
+
+ //Include any colour information about the element
+ tooltipLabels.push(helpers.template(this.options.multiTooltipTemplate, element));
+ tooltipColors.push({
+ fill: element._saved.fillColor || element.fillColor,
+ stroke: element._saved.strokeColor || element.strokeColor
+ });
+
+ }, this);
+
+ yMin = min(yPositions);
+ yMax = max(yPositions);
+
+ xMin = min(xPositions);
+ xMax = max(xPositions);
+
+ return {
+ x: (xMin > this.chart.width/2) ? xMin : xMax,
+ y: (yMin + yMax)/2
+ };
+ }).call(this, dataIndex);
+
+ new Chart.MultiTooltip({
+ x: medianPosition.x,
+ y: medianPosition.y,
+ xPadding: this.options.tooltipXPadding,
+ yPadding: this.options.tooltipYPadding,
+ xOffset: this.options.tooltipXOffset,
+ fillColor: this.options.tooltipFillColor,
+ textColor: this.options.tooltipFontColor,
+ fontFamily: this.options.tooltipFontFamily,
+ fontStyle: this.options.tooltipFontStyle,
+ fontSize: this.options.tooltipFontSize,
+ titleTextColor: this.options.tooltipTitleFontColor,
+ titleFontFamily: this.options.tooltipTitleFontFamily,
+ titleFontStyle: this.options.tooltipTitleFontStyle,
+ titleFontSize: this.options.tooltipTitleFontSize,
+ cornerRadius: this.options.tooltipCornerRadius,
+ labels: tooltipLabels,
+ legendColors: tooltipColors,
+ legendColorBackground : this.options.multiTooltipKeyBackground,
+ title: ChartElements[0].label,
+ chart: this.chart,
+ ctx: this.chart.ctx
+ }).draw();
+
+ } else {
+ each(ChartElements, function(Element) {
+ var tooltipPosition = Element.tooltipPosition();
+ new Chart.Tooltip({
+ x: Math.round(tooltipPosition.x),
+ y: Math.round(tooltipPosition.y),
+ xPadding: this.options.tooltipXPadding,
+ yPadding: this.options.tooltipYPadding,
+ fillColor: this.options.tooltipFillColor,
+ textColor: this.options.tooltipFontColor,
+ fontFamily: this.options.tooltipFontFamily,
+ fontStyle: this.options.tooltipFontStyle,
+ fontSize: this.options.tooltipFontSize,
+ caretHeight: this.options.tooltipCaretSize,
+ cornerRadius: this.options.tooltipCornerRadius,
+ text: template(this.options.tooltipTemplate, Element),
+ chart: this.chart
+ }).draw();
+ }, this);
+ }
+ }
+ return this;
+ },
+ toBase64Image : function(){
+ return this.chart.canvas.toDataURL.apply(this.chart.canvas, arguments);
+ }
+ });
+
+ Chart.Type.extend = function(extensions){
+
+ var parent = this;
+
+ var ChartType = function(){
+ return parent.apply(this,arguments);
+ };
+
+ //Copy the prototype object of the this class
+ ChartType.prototype = clone(parent.prototype);
+ //Now overwrite some of the properties in the base class with the new extensions
+ extend(ChartType.prototype, extensions);
+
+ ChartType.extend = Chart.Type.extend;
+
+ if (extensions.name || parent.prototype.name){
+
+ var chartName = extensions.name || parent.prototype.name;
+ //Assign any potential default values of the new chart type
+
+ //If none are defined, we'll use a clone of the chart type this is being extended from.
+ //I.e. if we extend a line chart, we'll use the defaults from the line chart if our new chart
+ //doesn't define some defaults of their own.
+
+ var baseDefaults = (Chart.defaults[parent.prototype.name]) ? clone(Chart.defaults[parent.prototype.name]) : {};
+
+ Chart.defaults[chartName] = extend(baseDefaults,extensions.defaults);
+
+ Chart.types[chartName] = ChartType;
+
+ //Register this new chart type in the Chart prototype
+ Chart.prototype[chartName] = function(data,options){
+ var config = merge(Chart.defaults.global, Chart.defaults[chartName], options || {});
+ return new ChartType(data,config,this);
+ };
+ } else{
+ warn("Name not provided for this chart, so it hasn't been registered");
+ }
+ return parent;
+ };
+
+ Chart.Element = function(configuration){
+ extend(this,configuration);
+ this.initialize.apply(this,arguments);
+ this.save();
+ };
+ extend(Chart.Element.prototype,{
+ initialize : function(){},
+ restore : function(props){
+ if (!props){
+ extend(this,this._saved);
+ } else {
+ each(props,function(key){
+ this[key] = this._saved[key];
+ },this);
+ }
+ return this;
+ },
+ save : function(){
+ this._saved = clone(this);
+ delete this._saved._saved;
+ return this;
+ },
+ update : function(newProps){
+ each(newProps,function(value,key){
+ this._saved[key] = this[key];
+ this[key] = value;
+ },this);
+ return this;
+ },
+ transition : function(props,ease){
+ each(props,function(value,key){
+ this[key] = ((value - this._saved[key]) * ease) + this._saved[key];
+ },this);
+ return this;
+ },
+ tooltipPosition : function(){
+ return {
+ x : this.x,
+ y : this.y
+ };
+ }
+ });
+
+ Chart.Element.extend = inherits;
+
+
+ Chart.Point = Chart.Element.extend({
+ inRange : function(chartX,chartY){
+ var hitDetectionRange = this.hitDetectionRadius + this.radius;
+ return ((Math.pow(chartX-this.x, 2)+Math.pow(chartY-this.y, 2)) < Math.pow(hitDetectionRange,2));
+ },
+ draw : function(){
+ var ctx = this.ctx;
+ ctx.beginPath();
+
+ ctx.arc(this.x, this.y, this.radius, 0, Math.PI*2);
+ ctx.closePath();
+
+ ctx.strokeStyle = this.strokeColor;
+ ctx.lineWidth = this.strokeWidth;
+
+ ctx.fillStyle = this.fillColor;
+
+ ctx.fill();
+ ctx.stroke();
+
+
+
+ //Quick debug for bezier curve splining
+ //Highlights control points and the line between them.
+ //Handy for dev - stripped in the min version.
+
+ // ctx.save();
+ // ctx.fillStyle = "black";
+ // ctx.strokeStyle = "black"
+ // ctx.beginPath();
+ // ctx.arc(this.controlPoints.inner.x,this.controlPoints.inner.y, 2, 0, Math.PI*2);
+ // ctx.fill();
+
+ // ctx.beginPath();
+ // ctx.arc(this.controlPoints.outer.x,this.controlPoints.outer.y, 2, 0, Math.PI*2);
+ // ctx.fill();
+
+ // ctx.moveTo(this.controlPoints.inner.x,this.controlPoints.inner.y);
+ // ctx.lineTo(this.controlPoints.outer.x,this.controlPoints.outer.y);
+ // ctx.stroke();
+
+ // ctx.restore();
+
+
+
+ }
+ });
+
+ Chart.Arc = Chart.Element.extend({
+ inRange : function(chartX,chartY){
+
+ var pointRelativePosition = helpers.getAngleFromPoint(this, {
+ x: chartX,
+ y: chartY
+ });
+
+ //Check if within the range of the open/close angle
+ var betweenAngles = (pointRelativePosition.angle >= this.startAngle && pointRelativePosition.angle <= this.endAngle),
+ withinRadius = (pointRelativePosition.distance >= this.innerRadius && pointRelativePosition.distance <= this.outerRadius);
+
+ return (betweenAngles && withinRadius);
+ //Ensure within the outside of the arc centre, but inside arc outer
+ },
+ tooltipPosition : function(){
+ var centreAngle = this.startAngle + ((this.endAngle - this.startAngle) / 2),
+ rangeFromCentre = (this.outerRadius - this.innerRadius) / 2 + this.innerRadius;
+ return {
+ x : this.x + (Math.cos(centreAngle) * rangeFromCentre),
+ y : this.y + (Math.sin(centreAngle) * rangeFromCentre)
+ };
+ },
+ draw : function(animationPercent){
+
+ var easingDecimal = animationPercent || 1;
+
+ var ctx = this.ctx;
+
+ ctx.beginPath();
+
+ ctx.arc(this.x, this.y, this.outerRadius, this.startAngle, this.endAngle);
+
+ ctx.arc(this.x, this.y, this.innerRadius, this.endAngle, this.startAngle, true);
+
+ ctx.closePath();
+ ctx.strokeStyle = this.strokeColor;
+ ctx.lineWidth = this.strokeWidth;
+
+ ctx.fillStyle = this.fillColor;
+
+ ctx.fill();
+ ctx.lineJoin = 'bevel';
+
+ if (this.showStroke){
+ ctx.stroke();
+ }
+ }
+ });
+
+ Chart.Rectangle = Chart.Element.extend({
+ draw : function(){
+ var ctx = this.ctx,
+ halfWidth = this.width/2,
+ leftX = this.x - halfWidth,
+ rightX = this.x + halfWidth,
+ top = this.base - (this.base - this.y),
+ halfStroke = this.strokeWidth / 2;
+
+ // Canvas doesn't allow us to stroke inside the width so we can
+ // adjust the sizes to fit if we're setting a stroke on the line
+ if (this.showStroke){
+ leftX += halfStroke;
+ rightX -= halfStroke;
+ top += halfStroke;
+ }
+
+ ctx.beginPath();
+
+ ctx.fillStyle = this.fillColor;
+ ctx.strokeStyle = this.strokeColor;
+ ctx.lineWidth = this.strokeWidth;
+
+ // It'd be nice to keep this class totally generic to any rectangle
+ // and simply specify which border to miss out.
+ ctx.moveTo(leftX, this.base);
+ ctx.lineTo(leftX, top);
+ ctx.lineTo(rightX, top);
+ ctx.lineTo(rightX, this.base);
+ ctx.fill();
+ if (this.showStroke){
+ ctx.stroke();
+ }
+ },
+ height : function(){
+ return this.base - this.y;
+ },
+ inRange : function(chartX,chartY){
+ return (chartX >= this.x - this.width/2 && chartX <= this.x + this.width/2) && (chartY >= this.y && chartY <= this.base);
+ }
+ });
+
+ Chart.Tooltip = Chart.Element.extend({
+ draw : function(){
+
+ var ctx = this.chart.ctx;
+
+ ctx.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);
+
+ this.xAlign = "center";
+ this.yAlign = "above";
+
+ //Distance between the actual element.y position and the start of the tooltip caret
+ var caretPadding = 2;
+
+ var tooltipWidth = ctx.measureText(this.text).width + 2*this.xPadding,
+ tooltipRectHeight = this.fontSize + 2*this.yPadding,
+ tooltipHeight = tooltipRectHeight + this.caretHeight + caretPadding;
+
+ if (this.x + tooltipWidth/2 >this.chart.width){
+ this.xAlign = "left";
+ } else if (this.x - tooltipWidth/2 < 0){
+ this.xAlign = "right";
+ }
+
+ if (this.y - tooltipHeight < 0){
+ this.yAlign = "below";
+ }
+
+
+ var tooltipX = this.x - tooltipWidth/2,
+ tooltipY = this.y - tooltipHeight;
+
+ ctx.fillStyle = this.fillColor;
+
+ switch(this.yAlign)
+ {
+ case "above":
+ //Draw a caret above the x/y
+ ctx.beginPath();
+ ctx.moveTo(this.x,this.y - caretPadding);
+ ctx.lineTo(this.x + this.caretHeight, this.y - (caretPadding + this.caretHeight));
+ ctx.lineTo(this.x - this.caretHeight, this.y - (caretPadding + this.caretHeight));
+ ctx.closePath();
+ ctx.fill();
+ break;
+ case "below":
+ tooltipY = this.y + caretPadding + this.caretHeight;
+ //Draw a caret below the x/y
+ ctx.beginPath();
+ ctx.moveTo(this.x, this.y + caretPadding);
+ ctx.lineTo(this.x + this.caretHeight, this.y + caretPadding + this.caretHeight);
+ ctx.lineTo(this.x - this.caretHeight, this.y + caretPadding + this.caretHeight);
+ ctx.closePath();
+ ctx.fill();
+ break;
+ }
+
+ switch(this.xAlign)
+ {
+ case "left":
+ tooltipX = this.x - tooltipWidth + (this.cornerRadius + this.caretHeight);
+ break;
+ case "right":
+ tooltipX = this.x - (this.cornerRadius + this.caretHeight);
+ break;
+ }
+
+ drawRoundedRectangle(ctx,tooltipX,tooltipY,tooltipWidth,tooltipRectHeight,this.cornerRadius);
+
+ ctx.fill();
+
+ ctx.fillStyle = this.textColor;
+ ctx.textAlign = "center";
+ ctx.textBaseline = "middle";
+ ctx.fillText(this.text, tooltipX + tooltipWidth/2, tooltipY + tooltipRectHeight/2);
+ }
+ });
+
+ Chart.MultiTooltip = Chart.Element.extend({
+ initialize : function(){
+ this.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);
+
+ this.titleFont = fontString(this.titleFontSize,this.titleFontStyle,this.titleFontFamily);
+
+ this.height = (this.labels.length * this.fontSize) + ((this.labels.length-1) * (this.fontSize/2)) + (this.yPadding*2) + this.titleFontSize *1.5;
+
+ this.ctx.font = this.titleFont;
+
+ var titleWidth = this.ctx.measureText(this.title).width,
+ //Label has a legend square as well so account for this.
+ labelWidth = longestText(this.ctx,this.font,this.labels) + this.fontSize + 3,
+ longestTextWidth = max([labelWidth,titleWidth]);
+
+ this.width = longestTextWidth + (this.xPadding*2);
+
+
+ var halfHeight = this.height/2;
+
+ //Check to ensure the height will fit on the canvas
+ //The three is to buffer form the very
+ if (this.y - halfHeight < 0 ){
+ this.y = halfHeight;
+ } else if (this.y + halfHeight > this.chart.height){
+ this.y = this.chart.height - halfHeight;
+ }
+
+ //Decide whether to align left or right based on position on canvas
+ if (this.x > this.chart.width/2){
+ this.x -= this.xOffset + this.width;
+ } else {
+ this.x += this.xOffset;
+ }
+
+
+ },
+ getLineHeight : function(index){
+ var baseLineHeight = this.y - (this.height/2) + this.yPadding,
+ afterTitleIndex = index-1;
+
+ //If the index is zero, we're getting the title
+ if (index === 0){
+ return baseLineHeight + this.titleFontSize/2;
+ } else{
+ return baseLineHeight + ((this.fontSize*1.5*afterTitleIndex) + this.fontSize/2) + this.titleFontSize * 1.5;
+ }
+
+ },
+ draw : function(){
+ drawRoundedRectangle(this.ctx,this.x,this.y - this.height/2,this.width,this.height,this.cornerRadius);
+ var ctx = this.ctx;
+ ctx.fillStyle = this.fillColor;
+ ctx.fill();
+ ctx.closePath();
+
+ ctx.textAlign = "left";
+ ctx.textBaseline = "middle";
+ ctx.fillStyle = this.titleTextColor;
+ ctx.font = this.titleFont;
+
+ ctx.fillText(this.title,this.x + this.xPadding, this.getLineHeight(0));
+
+ ctx.font = this.font;
+ helpers.each(this.labels,function(label,index){
+ ctx.fillStyle = this.textColor;
+ ctx.fillText(label,this.x + this.xPadding + this.fontSize + 3, this.getLineHeight(index + 1));
+
+ //A bit gnarly, but clearing this rectangle breaks when using explorercanvas (clears whole canvas)
+ //ctx.clearRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);
+ //Instead we'll make a white filled block to put the legendColour palette over.
+
+ ctx.fillStyle = this.legendColorBackground;
+ ctx.fillRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);
+
+ ctx.fillStyle = this.legendColors[index].fill;
+ ctx.fillRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);
+
+
+ },this);
+ }
+ });
+
+ Chart.Scale = Chart.Element.extend({
+ initialize : function(){
+ this.fit();
+ },
+ buildYLabels : function(){
+ this.yLabels = [];
+
+ var stepDecimalPlaces = getDecimalPlaces(this.stepValue);
+
+ for (var i=0; i<=this.steps; i++){
+ this.yLabels.push(template(this.templateString,{value:(this.min + (i * this.stepValue)).toFixed(stepDecimalPlaces)}));
+ }
+ this.yLabelWidth = (this.display && this.showLabels) ? longestText(this.ctx,this.font,this.yLabels) : 0;
+ },
+ addXLabel : function(label){
+ this.xLabels.push(label);
+ this.valuesCount++;
+ this.fit();
+ },
+ removeXLabel : function(){
+ this.xLabels.shift();
+ this.valuesCount--;
+ this.fit();
+ },
+ // Fitting loop to rotate x Labels and figure out what fits there, and also calculate how many Y steps to use
+ fit: function(){
+ // First we need the width of the yLabels, assuming the xLabels aren't rotated
+
+ // To do that we need the base line at the top and base of the chart, assuming there is no x label rotation
+ this.startPoint = (this.display) ? this.fontSize : 0;
+ this.endPoint = (this.display) ? this.height - (this.fontSize * 1.5) - 5 : this.height; // -5 to pad labels
+
+ // Apply padding settings to the start and end point.
+ this.startPoint += this.padding;
+ this.endPoint -= this.padding;
+
+ // Cache the starting height, so can determine if we need to recalculate the scale yAxis
+ var cachedHeight = this.endPoint - this.startPoint,
+ cachedYLabelWidth;
+
+ // Build the current yLabels so we have an idea of what size they'll be to start
+ /*
+ * This sets what is returned from calculateScaleRange as static properties of this class:
+ *
+ this.steps;
+ this.stepValue;
+ this.min;
+ this.max;
+ *
+ */
+ this.calculateYRange(cachedHeight);
+
+ // With these properties set we can now build the array of yLabels
+ // and also the width of the largest yLabel
+ this.buildYLabels();
+
+ this.calculateXLabelRotation();
+
+ while((cachedHeight > this.endPoint - this.startPoint)){
+ cachedHeight = this.endPoint - this.startPoint;
+ cachedYLabelWidth = this.yLabelWidth;
+
+ this.calculateYRange(cachedHeight);
+ this.buildYLabels();
+
+ // Only go through the xLabel loop again if the yLabel width has changed
+ if (cachedYLabelWidth < this.yLabelWidth){
+ this.calculateXLabelRotation();
+ }
+ }
+
+ },
+ calculateXLabelRotation : function(){
+ //Get the width of each grid by calculating the difference
+ //between x offsets between 0 and 1.
+
+ this.ctx.font = this.font;
+
+ var firstWidth = this.ctx.measureText(this.xLabels[0]).width,
+ lastWidth = this.ctx.measureText(this.xLabels[this.xLabels.length - 1]).width,
+ firstRotated,
+ lastRotated;
+
+
+ this.xScalePaddingRight = lastWidth/2 + 3;
+ this.xScalePaddingLeft = (firstWidth/2 > this.yLabelWidth + 10) ? firstWidth/2 : this.yLabelWidth + 10;
+
+ this.xLabelRotation = 0;
+ if (this.display){
+ var originalLabelWidth = longestText(this.ctx,this.font,this.xLabels),
+ cosRotation,
+ firstRotatedWidth;
+ this.xLabelWidth = originalLabelWidth;
+ //Allow 3 pixels x2 padding either side for label readability
+ var xGridWidth = Math.floor(this.calculateX(1) - this.calculateX(0)) - 6;
+
+ //Max label rotate should be 90 - also act as a loop counter
+ while ((this.xLabelWidth > xGridWidth && this.xLabelRotation === 0) || (this.xLabelWidth > xGridWidth && this.xLabelRotation <= 90 && this.xLabelRotation > 0)){
+ cosRotation = Math.cos(toRadians(this.xLabelRotation));
+
+ firstRotated = cosRotation * firstWidth;
+ lastRotated = cosRotation * lastWidth;
+
+ // We're right aligning the text now.
+ if (firstRotated + this.fontSize / 2 > this.yLabelWidth + 8){
+ this.xScalePaddingLeft = firstRotated + this.fontSize / 2;
+ }
+ this.xScalePaddingRight = this.fontSize/2;
+
+
+ this.xLabelRotation++;
+ this.xLabelWidth = cosRotation * originalLabelWidth;
+
+ }
+ if (this.xLabelRotation > 0){
+ this.endPoint -= Math.sin(toRadians(this.xLabelRotation))*originalLabelWidth + 3;
+ }
+ }
+ else{
+ this.xLabelWidth = 0;
+ this.xScalePaddingRight = this.padding;
+ this.xScalePaddingLeft = this.padding;
+ }
+
+ },
+ // Needs to be overidden in each Chart type
+ // Otherwise we need to pass all the data into the scale class
+ calculateYRange: noop,
+ drawingArea: function(){
+ return this.startPoint - this.endPoint;
+ },
+ calculateY : function(value){
+ var scalingFactor = this.drawingArea() / (this.min - this.max);
+ return this.endPoint - (scalingFactor * (value - this.min));
+ },
+ calculateX : function(index){
+ var isRotated = (this.xLabelRotation > 0),
+ // innerWidth = (this.offsetGridLines) ? this.width - offsetLeft - this.padding : this.width - (offsetLeft + halfLabelWidth * 2) - this.padding,
+ innerWidth = this.width - (this.xScalePaddingLeft + this.xScalePaddingRight),
+ valueWidth = innerWidth/(this.valuesCount - ((this.offsetGridLines) ? 0 : 1)),
+ valueOffset = (valueWidth * index) + this.xScalePaddingLeft;
+
+ if (this.offsetGridLines){
+ valueOffset += (valueWidth/2);
+ }
+
+ return Math.round(valueOffset);
+ },
+ update : function(newProps){
+ helpers.extend(this, newProps);
+ this.fit();
+ },
+ draw : function(){
+ var ctx = this.ctx,
+ yLabelGap = (this.endPoint - this.startPoint) / this.steps,
+ xStart = Math.round(this.xScalePaddingLeft);
+ if (this.display){
+ ctx.fillStyle = this.textColor;
+ ctx.font = this.font;
+ each(this.yLabels,function(labelString,index){
+ var yLabelCenter = this.endPoint - (yLabelGap * index),
+ linePositionY = Math.round(yLabelCenter);
+
+ ctx.textAlign = "right";
+ ctx.textBaseline = "middle";
+ if (this.showLabels){
+ ctx.fillText(labelString,xStart - 10,yLabelCenter);
+ }
+ ctx.beginPath();
+ if (index > 0){
+ // This is a grid line in the centre, so drop that
+ ctx.lineWidth = this.gridLineWidth;
+ ctx.strokeStyle = this.gridLineColor;
+ } else {
+ // This is the first line on the scale
+ ctx.lineWidth = this.lineWidth;
+ ctx.strokeStyle = this.lineColor;
+ }
+
+ linePositionY += helpers.aliasPixel(ctx.lineWidth);
+
+ ctx.moveTo(xStart, linePositionY);
+ ctx.lineTo(this.width, linePositionY);
+ ctx.stroke();
+ ctx.closePath();
+
+ ctx.lineWidth = this.lineWidth;
+ ctx.strokeStyle = this.lineColor;
+ ctx.beginPath();
+ ctx.moveTo(xStart - 5, linePositionY);
+ ctx.lineTo(xStart, linePositionY);
+ ctx.stroke();
+ ctx.closePath();
+
+ },this);
+
+ each(this.xLabels,function(label,index){
+ var xPos = this.calculateX(index) + aliasPixel(this.lineWidth),
+ // Check to see if line/bar here and decide where to place the line
+ linePos = this.calculateX(index - (this.offsetGridLines ? 0.5 : 0)) + aliasPixel(this.lineWidth),
+ isRotated = (this.xLabelRotation > 0);
+
+ ctx.beginPath();
+
+ if (index > 0){
+ // This is a grid line in the centre, so drop that
+ ctx.lineWidth = this.gridLineWidth;
+ ctx.strokeStyle = this.gridLineColor;
+ } else {
+ // This is the first line on the scale
+ ctx.lineWidth = this.lineWidth;
+ ctx.strokeStyle = this.lineColor;
+ }
+ ctx.moveTo(linePos,this.endPoint);
+ ctx.lineTo(linePos,this.startPoint - 3);
+ ctx.stroke();
+ ctx.closePath();
+
+
+ ctx.lineWidth = this.lineWidth;
+ ctx.strokeStyle = this.lineColor;
+
+
+ // Small lines at the bottom of the base grid line
+ ctx.beginPath();
+ ctx.moveTo(linePos,this.endPoint);
+ ctx.lineTo(linePos,this.endPoint + 5);
+ ctx.stroke();
+ ctx.closePath();
+
+ ctx.save();
+ ctx.translate(xPos,(isRotated) ? this.endPoint + 12 : this.endPoint + 8);
+ ctx.rotate(toRadians(this.xLabelRotation)*-1);
+ ctx.font = this.font;
+ ctx.textAlign = (isRotated) ? "right" : "center";
+ ctx.textBaseline = (isRotated) ? "middle" : "top";
+ ctx.fillText(label, 0, 0);
+ ctx.restore();
+ },this);
+
+ }
+ }
+
+ });
+
+ Chart.RadialScale = Chart.Element.extend({
+ initialize: function(){
+ this.size = min([this.height, this.width]);
+ this.drawingArea = (this.display) ? (this.size/2) - (this.fontSize/2 + this.backdropPaddingY) : (this.size/2);
+ },
+ calculateCenterOffset: function(value){
+ // Take into account half font size + the yPadding of the top value
+ var scalingFactor = this.drawingArea / (this.max - this.min);
+
+ return (value - this.min) * scalingFactor;
+ },
+ update : function(){
+ if (!this.lineArc){
+ this.setScaleSize();
+ } else {
+ this.drawingArea = (this.display) ? (this.size/2) - (this.fontSize/2 + this.backdropPaddingY) : (this.size/2);
+ }
+ this.buildYLabels();
+ },
+ buildYLabels: function(){
+ this.yLabels = [];
+
+ var stepDecimalPlaces = getDecimalPlaces(this.stepValue);
+
+ for (var i=0; i<=this.steps; i++){
+ this.yLabels.push(template(this.templateString,{value:(this.min + (i * this.stepValue)).toFixed(stepDecimalPlaces)}));
+ }
+ },
+ getCircumference : function(){
+ return ((Math.PI*2) / this.valuesCount);
+ },
+ setScaleSize: function(){
+ /*
+ * 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
+ */
+
+
+ // 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 largestPossibleRadius = min([(this.height/2 - this.pointLabelFontSize - 5), this.width/2]),
+ pointPosition,
+ i,
+ textWidth,
+ halfTextWidth,
+ furthestRight = this.width,
+ furthestRightIndex,
+ furthestRightAngle,
+ furthestLeft = 0,
+ furthestLeftIndex,
+ furthestLeftAngle,
+ xProtrusionLeft,
+ xProtrusionRight,
+ radiusReductionRight,
+ radiusReductionLeft,
+ maxWidthRadius;
+ this.ctx.font = fontString(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily);
+ for (i=0;i<this.valuesCount;i++){
+ // 5px to space the text slightly out - similar to what we do in the draw function.
+ pointPosition = this.getPointPosition(i, largestPossibleRadius);
+ textWidth = this.ctx.measureText(template(this.templateString, { value: this.labels[i] })).width + 5;
+ if (i === 0 || i === this.valuesCount/2){
+ // If we're at index zero, or exactly the middle, we're at exactly the top/bottom
+ // of the radar chart, so text will be aligned centrally, so we'll half it and compare
+ // w/left and right text sizes
+ halfTextWidth = textWidth/2;
+ if (pointPosition.x + halfTextWidth > furthestRight) {
+ furthestRight = pointPosition.x + halfTextWidth;
+ furthestRightIndex = i;
+ }
+ if (pointPosition.x - halfTextWidth < furthestLeft) {
+ furthestLeft = pointPosition.x - halfTextWidth;
+ furthestLeftIndex = i;
+ }
+ }
+ else if (i < this.valuesCount/2) {
+ // Less than half the values means we'll left align the text
+ if (pointPosition.x + textWidth > furthestRight) {
+ furthestRight = pointPosition.x + textWidth;
+ furthestRightIndex = i;
+ }
+ }
+ else if (i > this.valuesCount/2){
+ // More than half the values means we'll right align the text
+ if (pointPosition.x - textWidth < furthestLeft) {
+ furthestLeft = pointPosition.x - textWidth;
+ furthestLeftIndex = i;
+ }
+ }
+ }
+
+ xProtrusionLeft = furthestLeft;
+
+ xProtrusionRight = Math.ceil(furthestRight - this.width);
+
+ furthestRightAngle = this.getIndexAngle(furthestRightIndex);
+
+ furthestLeftAngle = this.getIndexAngle(furthestLeftIndex);
+
+ radiusReductionRight = xProtrusionRight / Math.sin(furthestRightAngle + Math.PI/2);
+
+ radiusReductionLeft = xProtrusionLeft / Math.sin(furthestLeftAngle + Math.PI/2);
+
+ // Ensure we actually need to reduce the size of the chart
+ radiusReductionRight = (isNumber(radiusReductionRight)) ? radiusReductionRight : 0;
+ radiusReductionLeft = (isNumber(radiusReductionLeft)) ? radiusReductionLeft : 0;
+
+ this.drawingArea = largestPossibleRadius - (radiusReductionLeft + radiusReductionRight)/2;
+
+ //this.drawingArea = min([maxWidthRadius, (this.height - (2 * (this.pointLabelFontSize + 5)))/2])
+ this.setCenterPoint(radiusReductionLeft, radiusReductionRight);
+
+ },
+ setCenterPoint: function(leftMovement, rightMovement){
+
+ var maxRight = this.width - rightMovement - this.drawingArea,
+ maxLeft = leftMovement + this.drawingArea;
+
+ this.xCenter = (maxLeft + maxRight)/2;
+ // Always vertically in the centre as the text height doesn't change
+ this.yCenter = (this.height/2);
+ },
+
+ getIndexAngle : function(index){
+ var angleMultiplier = (Math.PI * 2) / this.valuesCount;
+ // Start from the top instead of right, so remove a quarter of the circle
+
+ return index * angleMultiplier - (Math.PI/2);
+ },
+ getPointPosition : function(index, distanceFromCenter){
+ var thisAngle = this.getIndexAngle(index);
+ return {
+ x : (Math.cos(thisAngle) * distanceFromCenter) + this.xCenter,
+ y : (Math.sin(thisAngle) * distanceFromCenter) + this.yCenter
+ };
+ },
+ draw: function(){
+ if (this.display){
+ var ctx = this.ctx;
+ each(this.yLabels, function(label, index){
+ // Don't draw a centre value
+ if (index > 0){
+ var yCenterOffset = index * (this.drawingArea/this.steps),
+ yHeight = this.yCenter - yCenterOffset,
+ pointPosition;
+
+ // Draw circular lines around the scale
+ if (this.lineWidth > 0){
+ ctx.strokeStyle = this.lineColor;
+ ctx.lineWidth = this.lineWidth;
+
+ if(this.lineArc){
+ ctx.beginPath();
+ ctx.arc(this.xCenter, this.yCenter, yCenterOffset, 0, Math.PI*2);
+ ctx.closePath();
+ ctx.stroke();
+ } else{
+ ctx.beginPath();
+ for (var i=0;i<this.valuesCount;i++)
+ {
+ pointPosition = this.getPointPosition(i, this.calculateCenterOffset(this.min + (index * this.stepValue)));
+ if (i === 0){
+ ctx.moveTo(pointPosition.x, pointPosition.y);
+ } else {
+ ctx.lineTo(pointPosition.x, pointPosition.y);
+ }
+ }
+ ctx.closePath();
+ ctx.stroke();
+ }
+ }
+ if(this.showLabels){
+ ctx.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);
+ if (this.showLabelBackdrop){
+ var labelWidth = ctx.measureText(label).width;
+ ctx.fillStyle = this.backdropColor;
+ ctx.fillRect(
+ this.xCenter - labelWidth/2 - this.backdropPaddingX,
+ yHeight - this.fontSize/2 - this.backdropPaddingY,
+ labelWidth + this.backdropPaddingX*2,
+ this.fontSize + this.backdropPaddingY*2
+ );
+ }
+ ctx.textAlign = 'center';
+ ctx.textBaseline = "middle";
+ ctx.fillStyle = this.fontColor;
+ ctx.fillText(label, this.xCenter, yHeight);
+ }
+ }
+ }, this);
+
+ if (!this.lineArc){
+ ctx.lineWidth = this.angleLineWidth;
+ ctx.strokeStyle = this.angleLineColor;
+ for (var i = this.valuesCount - 1; i >= 0; i--) {
+ if (this.angleLineWidth > 0){
+ var outerPosition = this.getPointPosition(i, this.calculateCenterOffset(this.max));
+ ctx.beginPath();
+ ctx.moveTo(this.xCenter, this.yCenter);
+ ctx.lineTo(outerPosition.x, outerPosition.y);
+ ctx.stroke();
+ ctx.closePath();
+ }
+ // Extra 3px out for some label spacing
+ var pointLabelPosition = this.getPointPosition(i, this.calculateCenterOffset(this.max) + 5);
+ ctx.font = fontString(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily);
+ ctx.fillStyle = this.pointLabelFontColor;
+
+ var labelsCount = this.labels.length,
+ halfLabelsCount = this.labels.length/2,
+ quarterLabelsCount = halfLabelsCount/2,
+ upperHalf = (i < quarterLabelsCount || i > labelsCount - quarterLabelsCount),
+ exactQuarter = (i === quarterLabelsCount || i === labelsCount - quarterLabelsCount);
+ if (i === 0){
+ ctx.textAlign = 'center';
+ } else if(i === halfLabelsCount){
+ ctx.textAlign = 'center';
+ } else if (i < halfLabelsCount){
+ ctx.textAlign = 'left';
+ } else {
+ ctx.textAlign = 'right';
+ }
+
+ // Set the correct text baseline based on outer positioning
+ if (exactQuarter){
+ ctx.textBaseline = 'middle';
+ } else if (upperHalf){
+ ctx.textBaseline = 'bottom';
+ } else {
+ ctx.textBaseline = 'top';
+ }
+
+ ctx.fillText(this.labels[i], pointLabelPosition.x, pointLabelPosition.y);
+ }
+ }
+ }
+ }
+ });
+
+ // Attach global event to resize each chart instance when the browser resizes
+ helpers.addEvent(window, "resize", (function(){
+ // Basic debounce of resize function so it doesn't hurt performance when resizing browser.
+ var timeout;
+ return function(){
+ clearTimeout(timeout);
+ timeout = setTimeout(function(){
+ each(Chart.instances,function(instance){
+ // If the responsive flag is set in the chart instance config
+ // Cascade the resize event down to the chart.
+ if (instance.options.responsive){
+ instance.resize(instance.render, true);
+ }
+ });
+ }, 50);
+ };
+ })());
+
+
+ if (amd) {
+ define(function(){
+ return Chart;
+ });
+ }
+
+ root.Chart = Chart;
+
+ Chart.noConflict = function(){
+ root.Chart = previous;
+ return Chart;
+ };
+
+}).call(this);
\ No newline at end of file
--- /dev/null
+(function(){
+ "use strict";
+
+ var root = this,
+ Chart = root.Chart,
+ //Cache a local reference to Chart.helpers
+ helpers = Chart.helpers;
+
+ var defaultConfig = {
+ //Boolean - Whether we should show a stroke on each segment
+ segmentShowStroke : true,
+
+ //String - The colour of each segment stroke
+ segmentStrokeColor : "#fff",
+
+ //Number - The width of each segment stroke
+ segmentStrokeWidth : 2,
+
+ //The percentage of the chart that we cut out of the middle.
+ percentageInnerCutout : 50,
+
+ //Number - Amount of animation steps
+ animationSteps : 100,
+
+ //String - Animation easing effect
+ animationEasing : "easeOutBounce",
+
+ //Boolean - Whether we animate the rotation of the Doughnut
+ animateRotate : true,
+
+ //Boolean - Whether we animate scaling the Doughnut from the centre
+ animateScale : false,
+
+ //String - A legend template
+ legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span style=\"background-color:<%=segments[i].fillColor%>\"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>"
+
+ };
+
+
+ Chart.Type.extend({
+ //Passing in a name registers this chart in the Chart namespace
+ name: "Doughnut",
+ //Providing a defaults will also register the deafults in the chart namespace
+ defaults : defaultConfig,
+ //Initialize is fired when the chart is initialized - Data is passed in as a parameter
+ //Config is automatically merged by the core of Chart.js, and is available at this.options
+ initialize: function(data){
+
+ //Declare segments as a static property to prevent inheriting across the Chart type prototype
+ this.segments = [];
+ this.outerRadius = (helpers.min([this.chart.width,this.chart.height]) - this.options.segmentStrokeWidth/2)/2;
+
+ this.SegmentArc = Chart.Arc.extend({
+ ctx : this.chart.ctx,
+ x : this.chart.width/2,
+ y : this.chart.height/2
+ });
+
+ //Set up tooltip events on the chart
+ if (this.options.showTooltips){
+ helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
+ var activeSegments = (evt.type !== 'mouseout') ? this.getSegmentsAtEvent(evt) : [];
+
+ helpers.each(this.segments,function(segment){
+ segment.restore(["fillColor"]);
+ });
+ helpers.each(activeSegments,function(activeSegment){
+ activeSegment.fillColor = activeSegment.highlightColor;
+ });
+ this.showTooltip(activeSegments);
+ });
+ }
+ this.calculateTotal(data);
+
+ helpers.each(data,function(datapoint, index){
+ this.addData(datapoint, index, true);
+ },this);
+
+ this.render();
+ },
+ getSegmentsAtEvent : function(e){
+ var segmentsArray = [];
+
+ var location = helpers.getRelativePosition(e);
+
+ helpers.each(this.segments,function(segment){
+ if (segment.inRange(location.x,location.y)) segmentsArray.push(segment);
+ },this);
+ return segmentsArray;
+ },
+ addData : function(segment, atIndex, silent){
+ var index = atIndex || this.segments.length;
+ this.segments.splice(index, 0, new this.SegmentArc({
+ value : segment.value,
+ outerRadius : (this.options.animateScale) ? 0 : this.outerRadius,
+ innerRadius : (this.options.animateScale) ? 0 : (this.outerRadius/100) * this.options.percentageInnerCutout,
+ fillColor : segment.color,
+ highlightColor : segment.highlight || segment.color,
+ showStroke : this.options.segmentShowStroke,
+ strokeWidth : this.options.segmentStrokeWidth,
+ strokeColor : this.options.segmentStrokeColor,
+ startAngle : Math.PI * 1.5,
+ circumference : (this.options.animateRotate) ? 0 : this.calculateCircumference(segment.value),
+ label : segment.label
+ }));
+ if (!silent){
+ this.reflow();
+ this.update();
+ }
+ },
+ calculateCircumference : function(value){
+ return (Math.PI*2)*(value / this.total);
+ },
+ calculateTotal : function(data){
+ this.total = 0;
+ helpers.each(data,function(segment){
+ this.total += segment.value;
+ },this);
+ },
+ update : function(){
+ this.calculateTotal(this.segments);
+
+ // Reset any highlight colours before updating.
+ helpers.each(this.activeElements, function(activeElement){
+ activeElement.restore(['fillColor']);
+ });
+
+ helpers.each(this.segments,function(segment){
+ segment.save();
+ });
+ this.render();
+ },
+
+ removeData: function(atIndex){
+ var indexToDelete = (helpers.isNumber(atIndex)) ? atIndex : this.segments.length-1;
+ this.segments.splice(indexToDelete, 1);
+ this.reflow();
+ this.update();
+ },
+
+ reflow : function(){
+ helpers.extend(this.SegmentArc.prototype,{
+ x : this.chart.width/2,
+ y : this.chart.height/2
+ });
+ this.outerRadius = (helpers.min([this.chart.width,this.chart.height]) - this.options.segmentStrokeWidth/2)/2;
+ helpers.each(this.segments, function(segment){
+ segment.update({
+ outerRadius : this.outerRadius,
+ innerRadius : (this.outerRadius/100) * this.options.percentageInnerCutout
+ });
+ }, this);
+ },
+ draw : function(easeDecimal){
+ var animDecimal = (easeDecimal) ? easeDecimal : 1;
+ this.clear();
+ helpers.each(this.segments,function(segment,index){
+ segment.transition({
+ circumference : this.calculateCircumference(segment.value),
+ outerRadius : this.outerRadius,
+ innerRadius : (this.outerRadius/100) * this.options.percentageInnerCutout
+ },animDecimal);
+
+ segment.endAngle = segment.startAngle + segment.circumference;
+
+ segment.draw();
+ if (index === 0){
+ segment.startAngle = Math.PI * 1.5;
+ }
+ //Check to see if it's the last segment, if not get the next and update the start angle
+ if (index < this.segments.length-1){
+ this.segments[index+1].startAngle = segment.endAngle;
+ }
+ },this);
+
+ }
+ });
+
+ Chart.types.Doughnut.extend({
+ name : "Pie",
+ defaults : helpers.merge(defaultConfig,{percentageInnerCutout : 0})
+ });
+
+}).call(this);
\ No newline at end of file
--- /dev/null
+(function(){
+ "use strict";
+
+ var root = this,
+ Chart = root.Chart,
+ helpers = Chart.helpers;
+
+ var defaultConfig = {
+
+ ///Boolean - Whether grid lines are shown across the chart
+ scaleShowGridLines : true,
+
+ //String - Colour of the grid lines
+ scaleGridLineColor : "rgba(0,0,0,.05)",
+
+ //Number - Width of the grid lines
+ scaleGridLineWidth : 1,
+
+ //Boolean - Whether the line is curved between points
+ bezierCurve : true,
+
+ //Number - Tension of the bezier curve between points
+ bezierCurveTension : 0.4,
+
+ //Boolean - Whether to show a dot for each point
+ pointDot : true,
+
+ //Number - Radius of each point dot in pixels
+ pointDotRadius : 4,
+
+ //Number - Pixel width of point dot stroke
+ pointDotStrokeWidth : 1,
+
+ //Number - amount extra to add to the radius to cater for hit detection outside the drawn point
+ pointHitDetectionRadius : 20,
+
+ //Boolean - Whether to show a stroke for datasets
+ datasetStroke : true,
+
+ //Number - Pixel width of dataset stroke
+ datasetStrokeWidth : 2,
+
+ //Boolean - Whether to fill the dataset with a colour
+ datasetFill : true,
+
+ //String - A legend template
+ legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].strokeColor%>\"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>"
+
+ };
+
+
+ Chart.Type.extend({
+ name: "Line",
+ defaults : defaultConfig,
+ initialize: function(data){
+ //Declare the extension of the default point, to cater for the options passed in to the constructor
+ this.PointClass = Chart.Point.extend({
+ strokeWidth : this.options.pointDotStrokeWidth,
+ radius : this.options.pointDotRadius,
+ hitDetectionRadius : this.options.pointHitDetectionRadius,
+ ctx : this.chart.ctx,
+ inRange : function(mouseX){
+ return (Math.pow(mouseX-this.x, 2) < Math.pow(this.radius + this.hitDetectionRadius,2));
+ }
+ });
+
+ this.datasets = [];
+
+ //Set up tooltip events on the chart
+ if (this.options.showTooltips){
+ helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
+ var activePoints = (evt.type !== 'mouseout') ? this.getPointsAtEvent(evt) : [];
+ this.eachPoints(function(point){
+ point.restore(['fillColor', 'strokeColor']);
+ });
+ helpers.each(activePoints, function(activePoint){
+ activePoint.fillColor = activePoint.highlightFill;
+ activePoint.strokeColor = activePoint.highlightStroke;
+ });
+ this.showTooltip(activePoints);
+ });
+ }
+
+ //Iterate through each of the datasets, and build this into a property of the chart
+ helpers.each(data.datasets,function(dataset){
+
+ var datasetObject = {
+ label : dataset.label || null,
+ fillColor : dataset.fillColor,
+ strokeColor : dataset.strokeColor,
+ pointColor : dataset.pointColor,
+ pointStrokeColor : dataset.pointStrokeColor,
+ points : []
+ };
+
+ this.datasets.push(datasetObject);
+
+
+ helpers.each(dataset.data,function(dataPoint,index){
+ //Best way to do this? or in draw sequence...?
+ if (helpers.isNumber(dataPoint)){
+ //Add a new point for each piece of data, passing any required data to draw.
+ datasetObject.points.push(new this.PointClass({
+ value : dataPoint,
+ label : data.labels[index],
+ // x: this.scale.calculateX(index),
+ // y: this.scale.endPoint,
+ strokeColor : dataset.pointStrokeColor,
+ fillColor : dataset.pointColor,
+ highlightFill : dataset.pointHighlightFill || dataset.pointColor,
+ highlightStroke : dataset.pointHighlightStroke || dataset.pointStrokeColor
+ }));
+ }
+ },this);
+
+ this.buildScale(data.labels);
+
+
+ this.eachPoints(function(point, index){
+ helpers.extend(point, {
+ x: this.scale.calculateX(index),
+ y: this.scale.endPoint
+ });
+ point.save();
+ }, this);
+
+ },this);
+
+
+ this.render();
+ },
+ update : function(){
+ this.scale.update();
+ // Reset any highlight colours before updating.
+ helpers.each(this.activeElements, function(activeElement){
+ activeElement.restore(['fillColor', 'strokeColor']);
+ });
+ this.eachPoints(function(point){
+ point.save();
+ });
+ this.render();
+ },
+ eachPoints : function(callback){
+ helpers.each(this.datasets,function(dataset){
+ helpers.each(dataset.points,callback,this);
+ },this);
+ },
+ getPointsAtEvent : function(e){
+ var pointsArray = [],
+ eventPosition = helpers.getRelativePosition(e);
+ helpers.each(this.datasets,function(dataset){
+ helpers.each(dataset.points,function(point){
+ if (point.inRange(eventPosition.x,eventPosition.y)) pointsArray.push(point);
+ });
+ },this);
+ return pointsArray;
+ },
+ buildScale : function(labels){
+ var self = this;
+
+ var dataTotal = function(){
+ var values = [];
+ self.eachPoints(function(point){
+ values.push(point.value);
+ });
+
+ return values;
+ };
+
+ var scaleOptions = {
+ templateString : this.options.scaleLabel,
+ height : this.chart.height,
+ width : this.chart.width,
+ ctx : this.chart.ctx,
+ textColor : this.options.scaleFontColor,
+ fontSize : this.options.scaleFontSize,
+ fontStyle : this.options.scaleFontStyle,
+ fontFamily : this.options.scaleFontFamily,
+ valuesCount : labels.length,
+ beginAtZero : this.options.scaleBeginAtZero,
+ integersOnly : this.options.scaleIntegersOnly,
+ calculateYRange : function(currentHeight){
+ var updatedRanges = helpers.calculateScaleRange(
+ dataTotal(),
+ currentHeight,
+ this.fontSize,
+ this.beginAtZero,
+ this.integersOnly
+ );
+ helpers.extend(this, updatedRanges);
+ },
+ xLabels : labels,
+ font : helpers.fontString(this.options.scaleFontSize, this.options.scaleFontStyle, this.options.scaleFontFamily),
+ lineWidth : this.options.scaleLineWidth,
+ lineColor : this.options.scaleLineColor,
+ gridLineWidth : (this.options.scaleShowGridLines) ? this.options.scaleGridLineWidth : 0,
+ gridLineColor : (this.options.scaleShowGridLines) ? this.options.scaleGridLineColor : "rgba(0,0,0,0)",
+ padding: (this.options.showScale) ? 0 : this.options.pointDotRadius + this.options.pointDotStrokeWidth,
+ showLabels : this.options.scaleShowLabels,
+ display : this.options.showScale
+ };
+
+ if (this.options.scaleOverride){
+ helpers.extend(scaleOptions, {
+ calculateYRange: helpers.noop,
+ steps: this.options.scaleSteps,
+ stepValue: this.options.scaleStepWidth,
+ min: this.options.scaleStartValue,
+ max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
+ });
+ }
+
+
+ this.scale = new Chart.Scale(scaleOptions);
+ },
+ addData : function(valuesArray,label){
+ //Map the values array for each of the datasets
+
+ helpers.each(valuesArray,function(value,datasetIndex){
+ if (helpers.isNumber(value)){
+ //Add a new point for each piece of data, passing any required data to draw.
+ this.datasets[datasetIndex].points.push(new this.PointClass({
+ value : value,
+ label : label,
+ x: this.scale.calculateX(this.scale.valuesCount+1),
+ y: this.scale.endPoint,
+ strokeColor : this.datasets[datasetIndex].pointStrokeColor,
+ fillColor : this.datasets[datasetIndex].pointColor
+ }));
+ }
+ },this);
+
+ this.scale.addXLabel(label);
+ //Then re-render the chart.
+ this.update();
+ },
+ removeData : function(){
+ this.scale.removeXLabel();
+ //Then re-render the chart.
+ helpers.each(this.datasets,function(dataset){
+ dataset.points.shift();
+ },this);
+ this.update();
+ },
+ reflow : function(){
+ var newScaleProps = helpers.extend({
+ height : this.chart.height,
+ width : this.chart.width
+ });
+ this.scale.update(newScaleProps);
+ },
+ draw : function(ease){
+ var easingDecimal = ease || 1;
+ this.clear();
+
+ var ctx = this.chart.ctx;
+
+ this.scale.draw(easingDecimal);
+
+
+ helpers.each(this.datasets,function(dataset){
+
+ //Transition each point first so that the line and point drawing isn't out of sync
+ //We can use this extra loop to calculate the control points of this dataset also in this loop
+
+ helpers.each(dataset.points,function(point,index){
+ point.transition({
+ y : this.scale.calculateY(point.value),
+ x : this.scale.calculateX(index)
+ }, easingDecimal);
+
+ },this);
+
+
+ // Control points need to be calculated in a seperate loop, because we need to know the current x/y of the point
+ // This would cause issues when there is no animation, because the y of the next point would be 0, so beziers would be skewed
+ if (this.options.bezierCurve){
+ helpers.each(dataset.points,function(point,index){
+ //If we're at the start or end, we don't have a previous/next point
+ //By setting the tension to 0 here, the curve will transition to straight at the end
+ if (index === 0){
+ point.controlPoints = helpers.splineCurve(point,point,dataset.points[index+1],0);
+ }
+ else if (index >= dataset.points.length-1){
+ point.controlPoints = helpers.splineCurve(dataset.points[index-1],point,point,0);
+ }
+ else{
+ point.controlPoints = helpers.splineCurve(dataset.points[index-1],point,dataset.points[index+1],this.options.bezierCurveTension);
+ }
+ },this);
+ }
+
+
+ //Draw the line between all the points
+ ctx.lineWidth = this.options.datasetStrokeWidth;
+ ctx.strokeStyle = dataset.strokeColor;
+ ctx.beginPath();
+ helpers.each(dataset.points,function(point,index){
+ if (index>0){
+ if(this.options.bezierCurve){
+ ctx.bezierCurveTo(
+ dataset.points[index-1].controlPoints.outer.x,
+ dataset.points[index-1].controlPoints.outer.y,
+ point.controlPoints.inner.x,
+ point.controlPoints.inner.y,
+ point.x,
+ point.y
+ );
+ }
+ else{
+ ctx.lineTo(point.x,point.y);
+ }
+
+ }
+ else{
+ ctx.moveTo(point.x,point.y);
+ }
+ },this);
+ ctx.stroke();
+
+
+ if (this.options.datasetFill){
+ //Round off the line by going to the base of the chart, back to the start, then fill.
+ ctx.lineTo(dataset.points[dataset.points.length-1].x, this.scale.endPoint);
+ ctx.lineTo(this.scale.calculateX(0), this.scale.endPoint);
+ ctx.fillStyle = dataset.fillColor;
+ ctx.closePath();
+ ctx.fill();
+ }
+
+ //Now draw the points over the line
+ //A little inefficient double looping, but better than the line
+ //lagging behind the point positions
+ helpers.each(dataset.points,function(point){
+ point.draw();
+ });
+
+ },this);
+ }
+ });
+
+
+}).call(this);
\ No newline at end of file
--- /dev/null
+(function(){
+ "use strict";
+
+ var root = this,
+ Chart = root.Chart,
+ //Cache a local reference to Chart.helpers
+ helpers = Chart.helpers;
+
+ var defaultConfig = {
+ //Boolean - Show a backdrop to the scale label
+ scaleShowLabelBackdrop : true,
+
+ //String - The colour of the label backdrop
+ scaleBackdropColor : "rgba(255,255,255,0.75)",
+
+ // Boolean - Whether the scale should begin at zero
+ scaleBeginAtZero : true,
+
+ //Number - The backdrop padding above & below the label in pixels
+ scaleBackdropPaddingY : 2,
+
+ //Number - The backdrop padding to the side of the label in pixels
+ scaleBackdropPaddingX : 2,
+
+ //Boolean - Show line for each value in the scale
+ scaleShowLine : true,
+
+ //Boolean - Stroke a line around each segment in the chart
+ segmentShowStroke : true,
+
+ //String - The colour of the stroke on each segement.
+ segmentStrokeColor : "#fff",
+
+ //Number - The width of the stroke value in pixels
+ segmentStrokeWidth : 2,
+
+ //Number - Amount of animation steps
+ animationSteps : 100,
+
+ //String - Animation easing effect.
+ animationEasing : "easeOutBounce",
+
+ //Boolean - Whether to animate the rotation of the chart
+ animateRotate : true,
+
+ //Boolean - Whether to animate scaling the chart from the centre
+ animateScale : false,
+
+ //String - A legend template
+ legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span style=\"background-color:<%=segments[i].fillColor%>\"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>"
+ };
+
+
+ Chart.Type.extend({
+ //Passing in a name registers this chart in the Chart namespace
+ name: "PolarArea",
+ //Providing a defaults will also register the deafults in the chart namespace
+ defaults : defaultConfig,
+ //Initialize is fired when the chart is initialized - Data is passed in as a parameter
+ //Config is automatically merged by the core of Chart.js, and is available at this.options
+ initialize: function(data){
+ this.segments = [];
+ //Declare segment class as a chart instance specific class, so it can share props for this instance
+ this.SegmentArc = Chart.Arc.extend({
+ showStroke : this.options.segmentShowStroke,
+ strokeWidth : this.options.segmentStrokeWidth,
+ strokeColor : this.options.segmentStrokeColor,
+ ctx : this.chart.ctx,
+ innerRadius : 0,
+ x : this.chart.width/2,
+ y : this.chart.height/2
+ });
+ this.scale = new Chart.RadialScale({
+ display: this.options.showScale,
+ fontStyle: this.options.scaleFontStyle,
+ fontSize: this.options.scaleFontSize,
+ fontFamily: this.options.scaleFontFamily,
+ fontColor: this.options.scaleFontColor,
+ showLabels: this.options.scaleShowLabels,
+ showLabelBackdrop: this.options.scaleShowLabelBackdrop,
+ backdropColor: this.options.scaleBackdropColor,
+ backdropPaddingY : this.options.scaleBackdropPaddingY,
+ backdropPaddingX: this.options.scaleBackdropPaddingX,
+ lineWidth: (this.options.scaleShowLine) ? this.options.scaleLineWidth : 0,
+ lineColor: this.options.scaleLineColor,
+ lineArc: true,
+ width: this.chart.width,
+ height: this.chart.height,
+ xCenter: this.chart.width/2,
+ yCenter: this.chart.height/2,
+ ctx : this.chart.ctx,
+ templateString: this.options.scaleLabel,
+ valuesCount: data.length
+ });
+
+ this.updateScaleRange(data);
+
+ this.scale.update();
+
+ helpers.each(data,function(segment,index){
+ this.addData(segment,index,true);
+ },this);
+
+ //Set up tooltip events on the chart
+ if (this.options.showTooltips){
+ helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
+ var activeSegments = (evt.type !== 'mouseout') ? this.getSegmentsAtEvent(evt) : [];
+ helpers.each(this.segments,function(segment){
+ segment.restore(["fillColor"]);
+ });
+ helpers.each(activeSegments,function(activeSegment){
+ activeSegment.fillColor = activeSegment.highlightColor;
+ });
+ this.showTooltip(activeSegments);
+ });
+ }
+
+ this.render();
+ },
+ getSegmentsAtEvent : function(e){
+ var segmentsArray = [];
+
+ var location = helpers.getRelativePosition(e);
+
+ helpers.each(this.segments,function(segment){
+ if (segment.inRange(location.x,location.y)) segmentsArray.push(segment);
+ },this);
+ return segmentsArray;
+ },
+ addData : function(segment, atIndex, silent){
+ var index = atIndex || this.segments.length;
+
+ this.segments.splice(index, 0, new this.SegmentArc({
+ fillColor: segment.color,
+ highlightColor: segment.highlight || segment.color,
+ label: segment.label,
+ value: segment.value,
+ outerRadius: (this.options.animateScale) ? 0 : this.scale.calculateCenterOffset(segment.value),
+ circumference: (this.options.animateRotate) ? 0 : this.scale.getCircumference(),
+ startAngle: Math.PI * 1.5
+ }));
+ if (!silent){
+ this.reflow();
+ this.update();
+ }
+ },
+ removeData: function(atIndex){
+ var indexToDelete = (helpers.isNumber(atIndex)) ? atIndex : this.segments.length-1;
+ this.segments.splice(indexToDelete, 1);
+ this.reflow();
+ this.update();
+ },
+ calculateTotal: function(data){
+ this.total = 0;
+ helpers.each(data,function(segment){
+ this.total += segment.value;
+ },this);
+ this.scale.valuesCount = this.segments.length;
+ },
+ updateScaleRange: function(datapoints){
+ var valuesArray = [];
+ helpers.each(datapoints,function(segment){
+ valuesArray.push(segment.value);
+ });
+
+ var scaleSizes = (this.options.scaleOverride) ?
+ {
+ steps: this.options.scaleSteps,
+ stepValue: this.options.scaleStepWidth,
+ min: this.options.scaleStartValue,
+ max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
+ } :
+ helpers.calculateScaleRange(
+ valuesArray,
+ helpers.min([this.chart.width, this.chart.height])/2,
+ this.options.scaleFontSize,
+ this.options.scaleBeginAtZero,
+ this.options.scaleIntegersOnly
+ );
+
+ helpers.extend(
+ this.scale,
+ scaleSizes,
+ {
+ size: helpers.min([this.chart.width, this.chart.height]),
+ xCenter: this.chart.width/2,
+ yCenter: this.chart.height/2
+ }
+ );
+
+ },
+ update : function(){
+ this.calculateTotal(this.segments);
+
+ helpers.each(this.segments,function(segment){
+ segment.save();
+ });
+ this.render();
+ },
+ reflow : function(){
+ helpers.extend(this.SegmentArc.prototype,{
+ x : this.chart.width/2,
+ y : this.chart.height/2
+ });
+ this.updateScaleRange(this.segments);
+ this.scale.update();
+
+ helpers.extend(this.scale,{
+ xCenter: this.chart.width/2,
+ yCenter: this.chart.height/2
+ });
+
+ helpers.each(this.segments, function(segment){
+ segment.update({
+ outerRadius : this.scale.calculateCenterOffset(segment.value)
+ });
+ }, this);
+
+ },
+ draw : function(ease){
+ var easingDecimal = ease || 1;
+ //Clear & draw the canvas
+ this.clear();
+ helpers.each(this.segments,function(segment, index){
+ segment.transition({
+ circumference : this.scale.getCircumference(),
+ outerRadius : this.scale.calculateCenterOffset(segment.value)
+ },easingDecimal);
+
+ segment.endAngle = segment.startAngle + segment.circumference;
+
+ // If we've removed the first segment we need to set the first one to
+ // start at the top.
+ if (index === 0){
+ segment.startAngle = Math.PI * 1.5;
+ }
+
+ //Check to see if it's the last segment, if not get the next and update the start angle
+ if (index < this.segments.length - 1){
+ this.segments[index+1].startAngle = segment.endAngle;
+ }
+ segment.draw();
+ }, this);
+ this.scale.draw();
+ }
+ });
+
+}).call(this);
\ No newline at end of file
--- /dev/null
+(function(){
+ "use strict";
+
+ var root = this,
+ Chart = root.Chart,
+ helpers = Chart.helpers;
+
+
+
+ Chart.Type.extend({
+ name: "Radar",
+ defaults:{
+ //Boolean - Whether to show lines for each scale point
+ scaleShowLine : true,
+
+ //Boolean - Whether we show the angle lines out of the radar
+ angleShowLineOut : true,
+
+ //Boolean - Whether to show labels on the scale
+ scaleShowLabels : false,
+
+ // Boolean - Whether the scale should begin at zero
+ scaleBeginAtZero : true,
+
+ //String - Colour of the angle line
+ angleLineColor : "rgba(0,0,0,.1)",
+
+ //Number - Pixel width of the angle line
+ angleLineWidth : 1,
+
+ //String - Point label font declaration
+ pointLabelFontFamily : "'Arial'",
+
+ //String - Point label font weight
+ pointLabelFontStyle : "normal",
+
+ //Number - Point label font size in pixels
+ pointLabelFontSize : 10,
+
+ //String - Point label font colour
+ pointLabelFontColor : "#666",
+
+ //Boolean - Whether to show a dot for each point
+ pointDot : true,
+
+ //Number - Radius of each point dot in pixels
+ pointDotRadius : 3,
+
+ //Number - Pixel width of point dot stroke
+ pointDotStrokeWidth : 1,
+
+ //Number - amount extra to add to the radius to cater for hit detection outside the drawn point
+ pointHitDetectionRadius : 20,
+
+ //Boolean - Whether to show a stroke for datasets
+ datasetStroke : true,
+
+ //Number - Pixel width of dataset stroke
+ datasetStrokeWidth : 2,
+
+ //Boolean - Whether to fill the dataset with a colour
+ datasetFill : true,
+
+ //String - A legend template
+ legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span style=\"background-color:<%=datasets[i].strokeColor%>\"></span><%if(datasets[i].label){%><%=datasets[i].label%><%}%></li><%}%></ul>"
+
+ },
+
+ initialize: function(data){
+ this.PointClass = Chart.Point.extend({
+ strokeWidth : this.options.pointDotStrokeWidth,
+ radius : this.options.pointDotRadius,
+ hitDetectionRadius : this.options.pointHitDetectionRadius,
+ ctx : this.chart.ctx
+ });
+
+ this.datasets = [];
+
+ this.buildScale(data);
+
+ //Set up tooltip events on the chart
+ if (this.options.showTooltips){
+ helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
+ var activePointsCollection = (evt.type !== 'mouseout') ? this.getPointsAtEvent(evt) : [];
+
+ this.eachPoints(function(point){
+ point.restore(['fillColor', 'strokeColor']);
+ });
+ helpers.each(activePointsCollection, function(activePoint){
+ activePoint.fillColor = activePoint.highlightFill;
+ activePoint.strokeColor = activePoint.highlightStroke;
+ });
+
+ this.showTooltip(activePointsCollection);
+ });
+ }
+
+ //Iterate through each of the datasets, and build this into a property of the chart
+ helpers.each(data.datasets,function(dataset){
+
+ var datasetObject = {
+ label: dataset.label || null,
+ fillColor : dataset.fillColor,
+ strokeColor : dataset.strokeColor,
+ pointColor : dataset.pointColor,
+ pointStrokeColor : dataset.pointStrokeColor,
+ points : []
+ };
+
+ this.datasets.push(datasetObject);
+
+ helpers.each(dataset.data,function(dataPoint,index){
+ //Best way to do this? or in draw sequence...?
+ if (helpers.isNumber(dataPoint)){
+ //Add a new point for each piece of data, passing any required data to draw.
+ var pointPosition;
+ if (!this.scale.animation){
+ pointPosition = this.scale.getPointPosition(index, this.scale.calculateCenterOffset(dataPoint));
+ }
+ datasetObject.points.push(new this.PointClass({
+ value : dataPoint,
+ label : data.labels[index],
+ x: (this.options.animation) ? this.scale.xCenter : pointPosition.x,
+ y: (this.options.animation) ? this.scale.yCenter : pointPosition.y,
+ strokeColor : dataset.pointStrokeColor,
+ fillColor : dataset.pointColor,
+ highlightFill : dataset.pointHighlightFill || dataset.pointColor,
+ highlightStroke : dataset.pointHighlightStroke || dataset.pointStrokeColor
+ }));
+ }
+ },this);
+
+ },this);
+
+ this.render();
+ },
+ eachPoints : function(callback){
+ helpers.each(this.datasets,function(dataset){
+ helpers.each(dataset.points,callback,this);
+ },this);
+ },
+
+ getPointsAtEvent : function(evt){
+ var mousePosition = helpers.getRelativePosition(evt),
+ fromCenter = helpers.getAngleFromPoint({
+ x: this.scale.xCenter,
+ y: this.scale.yCenter
+ }, mousePosition);
+
+ var anglePerIndex = (Math.PI * 2) /this.scale.valuesCount,
+ pointIndex = Math.round((fromCenter.angle - Math.PI * 1.5) / anglePerIndex),
+ activePointsCollection = [];
+
+ // If we're at the top, make the pointIndex 0 to get the first of the array.
+ if (pointIndex >= this.scale.valuesCount || pointIndex < 0){
+ pointIndex = 0;
+ }
+
+ if (fromCenter.distance <= this.scale.drawingArea){
+ helpers.each(this.datasets, function(dataset){
+ activePointsCollection.push(dataset.points[pointIndex]);
+ });
+ }
+
+ return activePointsCollection;
+ },
+
+ buildScale : function(data){
+ this.scale = new Chart.RadialScale({
+ display: this.options.showScale,
+ fontStyle: this.options.scaleFontStyle,
+ fontSize: this.options.scaleFontSize,
+ fontFamily: this.options.scaleFontFamily,
+ fontColor: this.options.scaleFontColor,
+ showLabels: this.options.scaleShowLabels,
+ showLabelBackdrop: this.options.scaleShowLabelBackdrop,
+ backdropColor: this.options.scaleBackdropColor,
+ backdropPaddingY : this.options.scaleBackdropPaddingY,
+ backdropPaddingX: this.options.scaleBackdropPaddingX,
+ lineWidth: (this.options.scaleShowLine) ? this.options.scaleLineWidth : 0,
+ lineColor: this.options.scaleLineColor,
+ angleLineColor : this.options.angleLineColor,
+ angleLineWidth : (this.options.angleShowLineOut) ? this.options.angleLineWidth : 0,
+ // Point labels at the edge of each line
+ pointLabelFontColor : this.options.pointLabelFontColor,
+ pointLabelFontSize : this.options.pointLabelFontSize,
+ pointLabelFontFamily : this.options.pointLabelFontFamily,
+ pointLabelFontStyle : this.options.pointLabelFontStyle,
+ height : this.chart.height,
+ width: this.chart.width,
+ xCenter: this.chart.width/2,
+ yCenter: this.chart.height/2,
+ ctx : this.chart.ctx,
+ templateString: this.options.scaleLabel,
+ labels: data.labels,
+ valuesCount: data.datasets[0].data.length
+ });
+
+ this.scale.setScaleSize();
+ this.updateScaleRange(data.datasets);
+ this.scale.buildYLabels();
+ },
+ updateScaleRange: function(datasets){
+ var valuesArray = (function(){
+ var totalDataArray = [];
+ helpers.each(datasets,function(dataset){
+ if (dataset.data){
+ totalDataArray = totalDataArray.concat(dataset.data);
+ }
+ else {
+ helpers.each(dataset.points, function(point){
+ totalDataArray.push(point.value);
+ });
+ }
+ });
+ return totalDataArray;
+ })();
+
+
+ var scaleSizes = (this.options.scaleOverride) ?
+ {
+ steps: this.options.scaleSteps,
+ stepValue: this.options.scaleStepWidth,
+ min: this.options.scaleStartValue,
+ max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
+ } :
+ helpers.calculateScaleRange(
+ valuesArray,
+ helpers.min([this.chart.width, this.chart.height])/2,
+ this.options.scaleFontSize,
+ this.options.scaleBeginAtZero,
+ this.options.scaleIntegersOnly
+ );
+
+ helpers.extend(
+ this.scale,
+ scaleSizes
+ );
+
+ },
+ addData : function(valuesArray,label){
+ //Map the values array for each of the datasets
+ this.scale.valuesCount++;
+ helpers.each(valuesArray,function(value,datasetIndex){
+ if (helpers.isNumber(value)){
+ var pointPosition = this.scale.getPointPosition(this.scale.valuesCount, this.scale.calculateCenterOffset(value));
+ this.datasets[datasetIndex].points.push(new this.PointClass({
+ value : value,
+ label : label,
+ x: pointPosition.x,
+ y: pointPosition.y,
+ strokeColor : this.datasets[datasetIndex].pointStrokeColor,
+ fillColor : this.datasets[datasetIndex].pointColor
+ }));
+ }
+ },this);
+
+ this.scale.labels.push(label);
+
+ this.reflow();
+
+ this.update();
+ },
+ removeData : function(){
+ this.scale.valuesCount--;
+ this.scale.labels.shift();
+ helpers.each(this.datasets,function(dataset){
+ dataset.points.shift();
+ },this);
+ this.reflow();
+ this.update();
+ },
+ update : function(){
+ this.eachPoints(function(point){
+ point.save();
+ });
+ this.render();
+ },
+ reflow: function(){
+ helpers.extend(this.scale, {
+ width : this.chart.width,
+ height: this.chart.height,
+ size : helpers.min([this.chart.width, this.chart.height]),
+ xCenter: this.chart.width/2,
+ yCenter: this.chart.height/2
+ });
+ this.updateScaleRange(this.datasets);
+ this.scale.setScaleSize();
+ this.scale.buildYLabels();
+ },
+ draw : function(ease){
+ var easeDecimal = ease || 1,
+ ctx = this.chart.ctx;
+ this.clear();
+ this.scale.draw();
+
+ helpers.each(this.datasets,function(dataset){
+
+ //Transition each point first so that the line and point drawing isn't out of sync
+ helpers.each(dataset.points,function(point,index){
+ point.transition(this.scale.getPointPosition(index, this.scale.calculateCenterOffset(point.value)), easeDecimal);
+ },this);
+
+
+
+ //Draw the line between all the points
+ ctx.lineWidth = this.options.datasetStrokeWidth;
+ ctx.strokeStyle = dataset.strokeColor;
+ ctx.beginPath();
+ helpers.each(dataset.points,function(point,index){
+ if (index === 0){
+ ctx.moveTo(point.x,point.y);
+ }
+ else{
+ ctx.lineTo(point.x,point.y);
+ }
+ },this);
+ ctx.closePath();
+ ctx.stroke();
+
+ ctx.fillStyle = dataset.fillColor;
+ ctx.fill();
+
+ //Now draw the points over the line
+ //A little inefficient double looping, but better than the line
+ //lagging behind the point positions
+ helpers.each(dataset.points,function(point){
+ point.draw();
+ });
+
+ },this);
+
+ }
+
+ });
+
+
+
+
+
+}).call(this);
\ No newline at end of file
projects / thirdparty / Chart.js.git / commitdiff
