src/ceph/src/pybind/mgr/dashboard/static/AdminLTE-2.3.7/plugins/chartjs/Chart.js

   1 /*!
   2  * Chart.js
   3  * http://chartjs.org/
   4  * Version: 1.1.1
   5  *
   6  * Copyright 2015 Nick Downie
   7  * Released under the MIT license
   8  * https://github.com/nnnick/Chart.js/blob/master/LICENSE.md
   9  */
  10
  11
  12 (function(){
  13
  14         "use strict";
  15
  16         //Declare root variable - window in the browser, global on the server
  17         var root = this,
  18                 previous = root.Chart;
  19
  20         //Occupy the global variable of Chart, and create a simple base class
  21         var Chart = function(context){
  22                 var chart = this;
  23                 this.canvas = context.canvas;
  24
  25                 this.ctx = context;
  26
  27                 //Variables global to the chart
  28                 var computeDimension = function(element,dimension)
  29                 {
  30                         if (element['offset'+dimension])
  31                         {
  32                                 return element['offset'+dimension];
  33                         }
  34                         else
  35                         {
  36                                 return document.defaultView.getComputedStyle(element).getPropertyValue(dimension);
  37                         }
  38                 };
  39
  40                 var width = this.width = computeDimension(context.canvas,'Width') || context.canvas.width;
  41                 var height = this.height = computeDimension(context.canvas,'Height') || context.canvas.height;
  42
  43                 this.aspectRatio = this.width / this.height;
  44                 //High pixel density displays - multiply the size of the canvas height/width by the device pixel ratio, then scale.
  45                 helpers.retinaScale(this);
  46
  47                 return this;
  48         };
  49         //Globally expose the defaults to allow for user updating/changing
  50         Chart.defaults = {
  51                 global: {
  52                         // Boolean - Whether to animate the chart
  53                         animation: true,
  54
  55                         // Number - Number of animation steps
  56                         animationSteps: 60,
  57
  58                         // String - Animation easing effect
  59                         animationEasing: "easeOutQuart",
  60
  61                         // Boolean - If we should show the scale at all
  62                         showScale: true,
  63
  64                         // Boolean - If we want to override with a hard coded scale
  65                         scaleOverride: false,
  66
  67                         // ** Required if scaleOverride is true **
  68                         // Number - The number of steps in a hard coded scale
  69                         scaleSteps: null,
  70                         // Number - The value jump in the hard coded scale
  71                         scaleStepWidth: null,
  72                         // Number - The scale starting value
  73                         scaleStartValue: null,
  74
  75                         // String - Colour of the scale line
  76                         scaleLineColor: "rgba(0,0,0,.1)",
  77
  78                         // Number - Pixel width of the scale line
  79                         scaleLineWidth: 1,
  80
  81                         // Boolean - Whether to show labels on the scale
  82                         scaleShowLabels: true,
  83
  84                         // Interpolated JS string - can access value
  85                         scaleLabel: "<%=value%>",
  86
  87                         // Boolean - Whether the scale should stick to integers, and not show any floats even if drawing space is there
  88                         scaleIntegersOnly: true,
  89
  90                         // Boolean - Whether the scale should start at zero, or an order of magnitude down from the lowest value
  91                         scaleBeginAtZero: false,
  92
  93                         // String - Scale label font declaration for the scale label
  94                         scaleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
  95
  96                         // Number - Scale label font size in pixels
  97                         scaleFontSize: 12,
  98
  99                         // String - Scale label font weight style
 100                         scaleFontStyle: "normal",
 101
 102                         // String - Scale label font colour
 103                         scaleFontColor: "#666",
 104
 105                         // Boolean - whether or not the chart should be responsive and resize when the browser does.
 106                         responsive: false,
 107
 108                         // Boolean - whether to maintain the starting aspect ratio or not when responsive, if set to false, will take up entire container
 109                         maintainAspectRatio: true,
 110
 111                         // Boolean - Determines whether to draw tooltips on the canvas or not - attaches events to touchmove & mousemove
 112                         showTooltips: true,
 113
 114                         // Boolean - Determines whether to draw built-in tooltip or call custom tooltip function
 115                         customTooltips: false,
 116
 117                         // Array - Array of string names to attach tooltip events
 118                         tooltipEvents: ["mousemove", "touchstart", "touchmove", "mouseout"],
 119
 120                         // String - Tooltip background colour
 121                         tooltipFillColor: "rgba(0,0,0,0.8)",
 122
 123                         // String - Tooltip label font declaration for the scale label
 124                         tooltipFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
 125
 126                         // Number - Tooltip label font size in pixels
 127                         tooltipFontSize: 14,
 128
 129                         // String - Tooltip font weight style
 130                         tooltipFontStyle: "normal",
 131
 132                         // String - Tooltip label font colour
 133                         tooltipFontColor: "#fff",
 134
 135                         // String - Tooltip title font declaration for the scale label
 136                         tooltipTitleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
 137
 138                         // Number - Tooltip title font size in pixels
 139                         tooltipTitleFontSize: 14,
 140
 141                         // String - Tooltip title font weight style
 142                         tooltipTitleFontStyle: "bold",
 143
 144                         // String - Tooltip title font colour
 145                         tooltipTitleFontColor: "#fff",
 146
 147                         // String - Tooltip title template
 148                         tooltipTitleTemplate: "<%= label%>",
 149
 150                         // Number - pixel width of padding around tooltip text
 151                         tooltipYPadding: 6,
 152
 153                         // Number - pixel width of padding around tooltip text
 154                         tooltipXPadding: 6,
 155
 156                         // Number - Size of the caret on the tooltip
 157                         tooltipCaretSize: 8,
 158
 159                         // Number - Pixel radius of the tooltip border
 160                         tooltipCornerRadius: 6,
 161
 162                         // Number - Pixel offset from point x to tooltip edge
 163                         tooltipXOffset: 10,
 164
 165                         // String - Template string for single tooltips
 166                         tooltipTemplate: "<%if (label){%><%=label%>: <%}%><%= value %>",
 167
 168                         // String - Template string for single tooltips
 169                         multiTooltipTemplate: "<%= datasetLabel %>: <%= value %>",
 170
 171                         // String - Colour behind the legend colour block
 172                         multiTooltipKeyBackground: '#fff',
 173
 174                         // Array - A list of colors to use as the defaults
 175                         segmentColorDefault: ["#A6CEE3", "#1F78B4", "#B2DF8A", "#33A02C", "#FB9A99", "#E31A1C", "#FDBF6F", "#FF7F00", "#CAB2D6", "#6A3D9A", "#B4B482", "#B15928" ],
 176
 177                         // Array - A list of highlight colors to use as the defaults
 178                         segmentHighlightColorDefaults: [ "#CEF6FF", "#47A0DC", "#DAFFB2", "#5BC854", "#FFC2C1", "#FF4244", "#FFE797", "#FFA728", "#F2DAFE", "#9265C2", "#DCDCAA", "#D98150" ],
 179
 180                         // Function - Will fire on animation progression.
 181                         onAnimationProgress: function(){},
 182
 183                         // Function - Will fire on animation completion.
 184                         onAnimationComplete: function(){}
 185
 186                 }
 187         };
 188
 189         //Create a dictionary of chart types, to allow for extension of existing types
 190         Chart.types = {};
 191
 192         //Global Chart helpers object for utility methods and classes
 193         var helpers = Chart.helpers = {};
 194
 195                 //-- Basic js utility methods
 196         var each = helpers.each = function(loopable,callback,self){
 197                         var additionalArgs = Array.prototype.slice.call(arguments, 3);
 198                         // Check to see if null or undefined firstly.
 199                         if (loopable){
 200                                 if (loopable.length === +loopable.length){
 201                                         var i;
 202                                         for (i=0; i<loopable.length; i++){
 203                                                 callback.apply(self,[loopable[i], i].concat(additionalArgs));
 204                                         }
 205                                 }
 206                                 else{
 207                                         for (var item in loopable){
 208                                                 callback.apply(self,[loopable[item],item].concat(additionalArgs));
 209                                         }
 210                                 }
 211                         }
 212                 },
 213                 clone = helpers.clone = function(obj){
 214                         var objClone = {};
 215                         each(obj,function(value,key){
 216                                 if (obj.hasOwnProperty(key)){
 217                                         objClone[key] = value;
 218                                 }
 219                         });
 220                         return objClone;
 221                 },
 222                 extend = helpers.extend = function(base){
 223                         each(Array.prototype.slice.call(arguments,1), function(extensionObject) {
 224                                 each(extensionObject,function(value,key){
 225                                         if (extensionObject.hasOwnProperty(key)){
 226                                                 base[key] = value;
 227                                         }
 228                                 });
 229                         });
 230                         return base;
 231                 },
 232                 merge = helpers.merge = function(base,master){
 233                         //Merge properties in left object over to a shallow clone of object right.
 234                         var args = Array.prototype.slice.call(arguments,0);
 235                         args.unshift({});
 236                         return extend.apply(null, args);
 237                 },
 238                 indexOf = helpers.indexOf = function(arrayToSearch, item){
 239                         if (Array.prototype.indexOf) {
 240                                 return arrayToSearch.indexOf(item);
 241                         }
 242                         else{
 243                                 for (var i = 0; i < arrayToSearch.length; i++) {
 244                                         if (arrayToSearch[i] === item) return i;
 245                                 }
 246                                 return -1;
 247                         }
 248                 },
 249                 where = helpers.where = function(collection, filterCallback){
 250                         var filtered = [];
 251
 252                         helpers.each(collection, function(item){
 253                                 if (filterCallback(item)){
 254                                         filtered.push(item);
 255                                 }
 256                         });
 257
 258                         return filtered;
 259                 },
 260                 findNextWhere = helpers.findNextWhere = function(arrayToSearch, filterCallback, startIndex){
 261                         // Default to start of the array
 262                         if (!startIndex){
 263                                 startIndex = -1;
 264                         }
 265                         for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
 266                                 var currentItem = arrayToSearch[i];
 267                                 if (filterCallback(currentItem)){
 268                                         return currentItem;
 269                                 }
 270                         }
 271                 },
 272                 findPreviousWhere = helpers.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex){
 273                         // Default to end of the array
 274                         if (!startIndex){
 275                                 startIndex = arrayToSearch.length;
 276                         }
 277                         for (var i = startIndex - 1; i >= 0; i--) {
 278                                 var currentItem = arrayToSearch[i];
 279                                 if (filterCallback(currentItem)){
 280                                         return currentItem;
 281                                 }
 282                         }
 283                 },
 284                 inherits = helpers.inherits = function(extensions){
 285                         //Basic javascript inheritance based on the model created in Backbone.js
 286                         var parent = this;
 287                         var ChartElement = (extensions && extensions.hasOwnProperty("constructor")) ? extensions.constructor : function(){ return parent.apply(this, arguments); };
 288
 289                         var Surrogate = function(){ this.constructor = ChartElement;};
 290                         Surrogate.prototype = parent.prototype;
 291                         ChartElement.prototype = new Surrogate();
 292
 293                         ChartElement.extend = inherits;
 294
 295                         if (extensions) extend(ChartElement.prototype, extensions);
 296
 297                         ChartElement.__super__ = parent.prototype;
 298
 299                         return ChartElement;
 300                 },
 301                 noop = helpers.noop = function(){},
 302                 uid = helpers.uid = (function(){
 303                         var id=0;
 304                         return function(){
 305                                 return "chart-" + id++;
 306                         };
 307                 })(),
 308                 warn = helpers.warn = function(str){
 309                         //Method for warning of errors
 310                         if (window.console && typeof window.console.warn === "function") console.warn(str);
 311                 },
 312                 amd = helpers.amd = (typeof define === 'function' && define.amd),
 313                 //-- Math methods
 314                 isNumber = helpers.isNumber = function(n){
 315                         return !isNaN(parseFloat(n)) && isFinite(n);
 316                 },
 317                 max = helpers.max = function(array){
 318                         return Math.max.apply( Math, array );
 319                 },
 320                 min = helpers.min = function(array){
 321                         return Math.min.apply( Math, array );
 322                 },
 323                 cap = helpers.cap = function(valueToCap,maxValue,minValue){
 324                         if(isNumber(maxValue)) {
 325                                 if( valueToCap > maxValue ) {
 326                                         return maxValue;
 327                                 }
 328                         }
 329                         else if(isNumber(minValue)){
 330                                 if ( valueToCap < minValue ){
 331                                         return minValue;
 332                                 }
 333                         }
 334                         return valueToCap;
 335                 },
 336                 getDecimalPlaces = helpers.getDecimalPlaces = function(num){
 337                         if (num%1!==0 && isNumber(num)){
 338                                 var s = num.toString();
 339                                 if(s.indexOf("e-") < 0){
 340                                         // no exponent, e.g. 0.01
 341                                         return s.split(".")[1].length;
 342                                 }
 343                                 else if(s.indexOf(".") < 0) {
 344                                         // no decimal point, e.g. 1e-9
 345                                         return parseInt(s.split("e-")[1]);
 346                                 }
 347                                 else {
 348                                         // exponent and decimal point, e.g. 1.23e-9
 349                                         var parts = s.split(".")[1].split("e-");
 350                                         return parts[0].length + parseInt(parts[1]);
 351                                 }
 352                         }
 353                         else {
 354                                 return 0;
 355                         }
 356                 },
 357                 toRadians = helpers.radians = function(degrees){
 358                         return degrees * (Math.PI/180);
 359                 },
 360                 // Gets the angle from vertical upright to the point about a centre.
 361                 getAngleFromPoint = helpers.getAngleFromPoint = function(centrePoint, anglePoint){
 362                         var distanceFromXCenter = anglePoint.x - centrePoint.x,
 363                                 distanceFromYCenter = anglePoint.y - centrePoint.y,
 364                                 radialDistanceFromCenter = Math.sqrt( distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
 365
 366
 367                         var angle = Math.PI * 2 + Math.atan2(distanceFromYCenter, distanceFromXCenter);
 368
 369                         //If the segment is in the top left quadrant, we need to add another rotation to the angle
 370                         if (distanceFromXCenter < 0 && distanceFromYCenter < 0){
 371                                 angle += Math.PI*2;
 372                         }
 373
 374                         return {
 375                                 angle: angle,
 376                                 distance: radialDistanceFromCenter
 377                         };
 378                 },
 379                 aliasPixel = helpers.aliasPixel = function(pixelWidth){
 380                         return (pixelWidth % 2 === 0) ? 0 : 0.5;
 381                 },
 382                 splineCurve = helpers.splineCurve = function(FirstPoint,MiddlePoint,AfterPoint,t){
 383                         //Props to Rob Spencer at scaled innovation for his post on splining between points
 384                         //http://scaledinnovation.com/analytics/splines/aboutSplines.html
 385                         var d01=Math.sqrt(Math.pow(MiddlePoint.x-FirstPoint.x,2)+Math.pow(MiddlePoint.y-FirstPoint.y,2)),
 386                                 d12=Math.sqrt(Math.pow(AfterPoint.x-MiddlePoint.x,2)+Math.pow(AfterPoint.y-MiddlePoint.y,2)),
 387                                 fa=t*d01/(d01+d12),// scaling factor for triangle Ta
 388                                 fb=t*d12/(d01+d12);
 389                         return {
 390                                 inner : {
 391                                         x : MiddlePoint.x-fa*(AfterPoint.x-FirstPoint.x),
 392                                         y : MiddlePoint.y-fa*(AfterPoint.y-FirstPoint.y)
 393                                 },
 394                                 outer : {
 395                                         x: MiddlePoint.x+fb*(AfterPoint.x-FirstPoint.x),
 396                                         y : MiddlePoint.y+fb*(AfterPoint.y-FirstPoint.y)
 397                                 }
 398                         };
 399                 },
 400                 calculateOrderOfMagnitude = helpers.calculateOrderOfMagnitude = function(val){
 401                         return Math.floor(Math.log(val) / Math.LN10);
 402                 },
 403                 calculateScaleRange = helpers.calculateScaleRange = function(valuesArray, drawingSize, textSize, startFromZero, integersOnly){
 404
 405                         //Set a minimum step of two - a point at the top of the graph, and a point at the base
 406                         var minSteps = 2,
 407                                 maxSteps = Math.floor(drawingSize/(textSize * 1.5)),
 408                                 skipFitting = (minSteps >= maxSteps);
 409
 410                         // Filter out null values since these would min() to zero
 411                         var values = [];
 412                         each(valuesArray, function( v ){
 413                                 v == null || values.push( v );
 414                         });
 415                         var minValue = min(values),
 416                             maxValue = max(values);
 417
 418                         // We need some degree of separation here to calculate the scales if all the values are the same
 419                         // Adding/minusing 0.5 will give us a range of 1.
 420                         if (maxValue === minValue){
 421                                 maxValue += 0.5;
 422                                 // So we don't end up with a graph with a negative start value if we've said always start from zero
 423                                 if (minValue >= 0.5 && !startFromZero){
 424                                         minValue -= 0.5;
 425                                 }
 426                                 else{
 427                                         // Make up a whole number above the values
 428                                         maxValue += 0.5;
 429                                 }
 430                         }
 431
 432                         var     valueRange = Math.abs(maxValue - minValue),
 433                                 rangeOrderOfMagnitude = calculateOrderOfMagnitude(valueRange),
 434                                 graphMax = Math.ceil(maxValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude),
 435                                 graphMin = (startFromZero) ? 0 : Math.floor(minValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude),
 436                                 graphRange = graphMax - graphMin,
 437                                 stepValue = Math.pow(10, rangeOrderOfMagnitude),
 438                                 numberOfSteps = Math.round(graphRange / stepValue);
 439
 440                         //If we have more space on the graph we'll use it to give more definition to the data
 441                         while((numberOfSteps > maxSteps || (numberOfSteps * 2) < maxSteps) && !skipFitting) {
 442                                 if(numberOfSteps > maxSteps){
 443                                         stepValue *=2;
 444                                         numberOfSteps = Math.round(graphRange/stepValue);
 445                                         // Don't ever deal with a decimal number of steps - cancel fitting and just use the minimum number of steps.
 446                                         if (numberOfSteps % 1 !== 0){
 447                                                 skipFitting = true;
 448                                         }
 449                                 }
 450                                 //We can fit in double the amount of scale points on the scale
 451                                 else{
 452                                         //If user has declared ints only, and the step value isn't a decimal
 453                                         if (integersOnly && rangeOrderOfMagnitude >= 0){
 454                                                 //If the user has said integers only, we need to check that making the scale more granular wouldn't make it a float
 455                                                 if(stepValue/2 % 1 === 0){
 456                                                         stepValue /=2;
 457                                                         numberOfSteps = Math.round(graphRange/stepValue);
 458                                                 }
 459                                                 //If it would make it a float break out of the loop
 460                                                 else{
 461                                                         break;
 462                                                 }
 463                                         }
 464                                         //If the scale doesn't have to be an int, make the scale more granular anyway.
 465                                         else{
 466                                                 stepValue /=2;
 467                                                 numberOfSteps = Math.round(graphRange/stepValue);
 468                                         }
 469
 470                                 }
 471                         }
 472
 473                         if (skipFitting){
 474                                 numberOfSteps = minSteps;
 475                                 stepValue = graphRange / numberOfSteps;
 476                         }
 477
 478                         return {
 479                                 steps : numberOfSteps,
 480                                 stepValue : stepValue,
 481                                 min : graphMin,
 482                                 max     : graphMin + (numberOfSteps * stepValue)
 483                         };
 484
 485                 },
 486                 /* jshint ignore:start */
 487                 // Blows up jshint errors based on the new Function constructor
 488                 //Templating methods
 489                 //Javascript micro templating by John Resig - source at http://ejohn.org/blog/javascript-micro-templating/
 490                 template = helpers.template = function(templateString, valuesObject){
 491
 492                         // If templateString is function rather than string-template - call the function for valuesObject
 493
 494                         if(templateString instanceof Function){
 495                                 return templateString(valuesObject);
 496                         }
 497
 498                         var cache = {};
 499                         function tmpl(str, data){
 500                                 // Figure out if we're getting a template, or if we need to
 501                                 // load the template - and be sure to cache the result.
 502                                 var fn = !/\W/.test(str) ?
 503                                 cache[str] = cache[str] :
 504
 505                                 // Generate a reusable function that will serve as a template
 506                                 // generator (and which will be cached).
 507                                 new Function("obj",
 508                                         "var p=[],print=function(){p.push.apply(p,arguments);};" +
 509
 510                                         // Introduce the data as local variables using with(){}
 511                                         "with(obj){p.push('" +
 512
 513                                         // Convert the template into pure JavaScript
 514                                         str
 515                                                 .replace(/[\r\t\n]/g, " ")
 516                                                 .split("<%").join("\t")
 517                                                 .replace(/((^|%>)[^\t]*)'/g, "$1\r")
 518                                                 .replace(/\t=(.*?)%>/g, "',$1,'")
 519                                                 .split("\t").join("');")
 520                                                 .split("%>").join("p.push('")
 521                                                 .split("\r").join("\\'") +
 522                                         "');}return p.join('');"
 523                                 );
 524
 525                                 // Provide some basic currying to the user
 526                                 return data ? fn( data ) : fn;
 527                         }
 528                         return tmpl(templateString,valuesObject);
 529                 },
 530                 /* jshint ignore:end */
 531                 generateLabels = helpers.generateLabels = function(templateString,numberOfSteps,graphMin,stepValue){
 532                         var labelsArray = new Array(numberOfSteps);
 533                         if (templateString){
 534                                 each(labelsArray,function(val,index){
 535                                         labelsArray[index] = template(templateString,{value: (graphMin + (stepValue*(index+1)))});
 536                                 });
 537                         }
 538                         return labelsArray;
 539                 },
 540                 //--Animation methods
 541                 //Easing functions adapted from Robert Penner's easing equations
 542                 //http://www.robertpenner.com/easing/
 543                 easingEffects = helpers.easingEffects = {
 544                         linear: function (t) {
 545                                 return t;
 546                         },
 547                         easeInQuad: function (t) {
 548                                 return t * t;
 549                         },
 550                         easeOutQuad: function (t) {
 551                                 return -1 * t * (t - 2);
 552                         },
 553                         easeInOutQuad: function (t) {
 554                                 if ((t /= 1 / 2) < 1){
 555                                         return 1 / 2 * t * t;
 556                                 }
 557                                 return -1 / 2 * ((--t) * (t - 2) - 1);
 558                         },
 559                         easeInCubic: function (t) {
 560                                 return t * t * t;
 561                         },
 562                         easeOutCubic: function (t) {
 563                                 return 1 * ((t = t / 1 - 1) * t * t + 1);
 564                         },
 565                         easeInOutCubic: function (t) {
 566                                 if ((t /= 1 / 2) < 1){
 567                                         return 1 / 2 * t * t * t;
 568                                 }
 569                                 return 1 / 2 * ((t -= 2) * t * t + 2);
 570                         },
 571                         easeInQuart: function (t) {
 572                                 return t * t * t * t;
 573                         },
 574                         easeOutQuart: function (t) {
 575                                 return -1 * ((t = t / 1 - 1) * t * t * t - 1);
 576                         },
 577                         easeInOutQuart: function (t) {
 578                                 if ((t /= 1 / 2) < 1){
 579                                         return 1 / 2 * t * t * t * t;
 580                                 }
 581                                 return -1 / 2 * ((t -= 2) * t * t * t - 2);
 582                         },
 583                         easeInQuint: function (t) {
 584                                 return 1 * (t /= 1) * t * t * t * t;
 585                         },
 586                         easeOutQuint: function (t) {
 587                                 return 1 * ((t = t / 1 - 1) * t * t * t * t + 1);
 588                         },
 589                         easeInOutQuint: function (t) {
 590                                 if ((t /= 1 / 2) < 1){
 591                                         return 1 / 2 * t * t * t * t * t;
 592                                 }
 593                                 return 1 / 2 * ((t -= 2) * t * t * t * t + 2);
 594                         },
 595                         easeInSine: function (t) {
 596                                 return -1 * Math.cos(t / 1 * (Math.PI / 2)) + 1;
 597                         },
 598                         easeOutSine: function (t) {
 599                                 return 1 * Math.sin(t / 1 * (Math.PI / 2));
 600                         },
 601                         easeInOutSine: function (t) {
 602                                 return -1 / 2 * (Math.cos(Math.PI * t / 1) - 1);
 603                         },
 604                         easeInExpo: function (t) {
 605                                 return (t === 0) ? 1 : 1 * Math.pow(2, 10 * (t / 1 - 1));
 606                         },
 607                         easeOutExpo: function (t) {
 608                                 return (t === 1) ? 1 : 1 * (-Math.pow(2, -10 * t / 1) + 1);
 609                         },
 610                         easeInOutExpo: function (t) {
 611                                 if (t === 0){
 612                                         return 0;
 613                                 }
 614                                 if (t === 1){
 615                                         return 1;
 616                                 }
 617                                 if ((t /= 1 / 2) < 1){
 618                                         return 1 / 2 * Math.pow(2, 10 * (t - 1));
 619                                 }
 620                                 return 1 / 2 * (-Math.pow(2, -10 * --t) + 2);
 621                         },
 622                         easeInCirc: function (t) {
 623                                 if (t >= 1){
 624                                         return t;
 625                                 }
 626                                 return -1 * (Math.sqrt(1 - (t /= 1) * t) - 1);
 627                         },
 628                         easeOutCirc: function (t) {
 629                                 return 1 * Math.sqrt(1 - (t = t / 1 - 1) * t);
 630                         },
 631                         easeInOutCirc: function (t) {
 632                                 if ((t /= 1 / 2) < 1){
 633                                         return -1 / 2 * (Math.sqrt(1 - t * t) - 1);
 634                                 }
 635                                 return 1 / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1);
 636                         },
 637                         easeInElastic: function (t) {
 638                                 var s = 1.70158;
 639                                 var p = 0;
 640                                 var a = 1;
 641                                 if (t === 0){
 642                                         return 0;
 643                                 }
 644                                 if ((t /= 1) == 1){
 645                                         return 1;
 646                                 }
 647                                 if (!p){
 648                                         p = 1 * 0.3;
 649                                 }
 650                                 if (a < Math.abs(1)) {
 651                                         a = 1;
 652                                         s = p / 4;
 653                                 } else{
 654                                         s = p / (2 * Math.PI) * Math.asin(1 / a);
 655                                 }
 656                                 return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p));
 657                         },
 658                         easeOutElastic: function (t) {
 659                                 var s = 1.70158;
 660                                 var p = 0;
 661                                 var a = 1;
 662                                 if (t === 0){
 663                                         return 0;
 664                                 }
 665                                 if ((t /= 1) == 1){
 666                                         return 1;
 667                                 }
 668                                 if (!p){
 669                                         p = 1 * 0.3;
 670                                 }
 671                                 if (a < Math.abs(1)) {
 672                                         a = 1;
 673                                         s = p / 4;
 674                                 } else{
 675                                         s = p / (2 * Math.PI) * Math.asin(1 / a);
 676                                 }
 677                                 return a * Math.pow(2, -10 * t) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) + 1;
 678                         },
 679                         easeInOutElastic: function (t) {
 680                                 var s = 1.70158;
 681                                 var p = 0;
 682                                 var a = 1;
 683                                 if (t === 0){
 684                                         return 0;
 685                                 }
 686                                 if ((t /= 1 / 2) == 2){
 687                                         return 1;
 688                                 }
 689                                 if (!p){
 690                                         p = 1 * (0.3 * 1.5);
 691                                 }
 692                                 if (a < Math.abs(1)) {
 693                                         a = 1;
 694                                         s = p / 4;
 695                                 } else {
 696                                         s = p / (2 * Math.PI) * Math.asin(1 / a);
 697                                 }
 698                                 if (t < 1){
 699                                         return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p));}
 700                                 return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) * 0.5 + 1;
 701                         },
 702                         easeInBack: function (t) {
 703                                 var s = 1.70158;
 704                                 return 1 * (t /= 1) * t * ((s + 1) * t - s);
 705                         },
 706                         easeOutBack: function (t) {
 707                                 var s = 1.70158;
 708                                 return 1 * ((t = t / 1 - 1) * t * ((s + 1) * t + s) + 1);
 709                         },
 710                         easeInOutBack: function (t) {
 711                                 var s = 1.70158;
 712                                 if ((t /= 1 / 2) < 1){
 713                                         return 1 / 2 * (t * t * (((s *= (1.525)) + 1) * t - s));
 714                                 }
 715                                 return 1 / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
 716                         },
 717                         easeInBounce: function (t) {
 718                                 return 1 - easingEffects.easeOutBounce(1 - t);
 719                         },
 720                         easeOutBounce: function (t) {
 721                                 if ((t /= 1) < (1 / 2.75)) {
 722                                         return 1 * (7.5625 * t * t);
 723                                 } else if (t < (2 / 2.75)) {
 724                                         return 1 * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75);
 725                                 } else if (t < (2.5 / 2.75)) {
 726                                         return 1 * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375);
 727                                 } else {
 728                                         return 1 * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375);
 729                                 }
 730                         },
 731                         easeInOutBounce: function (t) {
 732                                 if (t < 1 / 2){
 733                                         return easingEffects.easeInBounce(t * 2) * 0.5;
 734                                 }
 735                                 return easingEffects.easeOutBounce(t * 2 - 1) * 0.5 + 1 * 0.5;
 736                         }
 737                 },
 738                 //Request animation polyfill - http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
 739                 requestAnimFrame = helpers.requestAnimFrame = (function(){
 740                         return window.requestAnimationFrame ||
 741                                 window.webkitRequestAnimationFrame ||
 742                                 window.mozRequestAnimationFrame ||
 743                                 window.oRequestAnimationFrame ||
 744                                 window.msRequestAnimationFrame ||
 745                                 function(callback) {
 746                                         return window.setTimeout(callback, 1000 / 60);
 747                                 };
 748                 })(),
 749                 cancelAnimFrame = helpers.cancelAnimFrame = (function(){
 750                         return window.cancelAnimationFrame ||
 751                                 window.webkitCancelAnimationFrame ||
 752                                 window.mozCancelAnimationFrame ||
 753                                 window.oCancelAnimationFrame ||
 754                                 window.msCancelAnimationFrame ||
 755                                 function(callback) {
 756                                         return window.clearTimeout(callback, 1000 / 60);
 757                                 };
 758                 })(),
 759                 animationLoop = helpers.animationLoop = function(callback,totalSteps,easingString,onProgress,onComplete,chartInstance){
 760
 761                         var currentStep = 0,
 762                                 easingFunction = easingEffects[easingString] || easingEffects.linear;
 763
 764                         var animationFrame = function(){
 765                                 currentStep++;
 766                                 var stepDecimal = currentStep/totalSteps;
 767                                 var easeDecimal = easingFunction(stepDecimal);
 768
 769                                 callback.call(chartInstance,easeDecimal,stepDecimal, currentStep);
 770                                 onProgress.call(chartInstance,easeDecimal,stepDecimal);
 771                                 if (currentStep < totalSteps){
 772                                         chartInstance.animationFrame = requestAnimFrame(animationFrame);
 773                                 } else{
 774                                         onComplete.apply(chartInstance);
 775                                 }
 776                         };
 777                         requestAnimFrame(animationFrame);
 778                 },
 779                 //-- DOM methods
 780                 getRelativePosition = helpers.getRelativePosition = function(evt){
 781                         var mouseX, mouseY;
 782                         var e = evt.originalEvent || evt,
 783                                 canvas = evt.currentTarget || evt.srcElement,
 784                                 boundingRect = canvas.getBoundingClientRect();
 785
 786                         if (e.touches){
 787                                 mouseX = e.touches[0].clientX - boundingRect.left;
 788                                 mouseY = e.touches[0].clientY - boundingRect.top;
 789
 790                         }
 791                         else{
 792                                 mouseX = e.clientX - boundingRect.left;
 793                                 mouseY = e.clientY - boundingRect.top;
 794                         }
 795
 796                         return {
 797                                 x : mouseX,
 798                                 y : mouseY
 799                         };
 800
 801                 },
 802                 addEvent = helpers.addEvent = function(node,eventType,method){
 803                         if (node.addEventListener){
 804                                 node.addEventListener(eventType,method);
 805                         } else if (node.attachEvent){
 806                                 node.attachEvent("on"+eventType, method);
 807                         } else {
 808                                 node["on"+eventType] = method;
 809                         }
 810                 },
 811                 removeEvent = helpers.removeEvent = function(node, eventType, handler){
 812                         if (node.removeEventListener){
 813                                 node.removeEventListener(eventType, handler, false);
 814                         } else if (node.detachEvent){
 815                                 node.detachEvent("on"+eventType,handler);
 816                         } else{
 817                                 node["on" + eventType] = noop;
 818                         }
 819                 },
 820                 bindEvents = helpers.bindEvents = function(chartInstance, arrayOfEvents, handler){
 821                         // Create the events object if it's not already present
 822                         if (!chartInstance.events) chartInstance.events = {};
 823
 824                         each(arrayOfEvents,function(eventName){
 825                                 chartInstance.events[eventName] = function(){
 826                                         handler.apply(chartInstance, arguments);
 827                                 };
 828                                 addEvent(chartInstance.chart.canvas,eventName,chartInstance.events[eventName]);
 829                         });
 830                 },
 831                 unbindEvents = helpers.unbindEvents = function (chartInstance, arrayOfEvents) {
 832                         each(arrayOfEvents, function(handler,eventName){
 833                                 removeEvent(chartInstance.chart.canvas, eventName, handler);
 834                         });
 835                 },
 836                 getMaximumWidth = helpers.getMaximumWidth = function(domNode){
 837                         var container = domNode.parentNode,
 838                             padding = parseInt(getStyle(container, 'padding-left')) + parseInt(getStyle(container, 'padding-right'));
 839                         // TODO = check cross browser stuff with this.
 840                         return container ? container.clientWidth - padding : 0;
 841                 },
 842                 getMaximumHeight = helpers.getMaximumHeight = function(domNode){
 843                         var container = domNode.parentNode,
 844                             padding = parseInt(getStyle(container, 'padding-bottom')) + parseInt(getStyle(container, 'padding-top'));
 845                         // TODO = check cross browser stuff with this.
 846                         return container ? container.clientHeight - padding : 0;
 847                 },
 848                 getStyle = helpers.getStyle = function (el, property) {
 849                         return el.currentStyle ?
 850                                 el.currentStyle[property] :
 851                                 document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
 852                 },
 853                 getMaximumSize = helpers.getMaximumSize = helpers.getMaximumWidth, // legacy support
 854                 retinaScale = helpers.retinaScale = function(chart){
 855                         var ctx = chart.ctx,
 856                                 width = chart.canvas.width,
 857                                 height = chart.canvas.height;
 858
 859                         if (window.devicePixelRatio) {
 860                                 ctx.canvas.style.width = width + "px";
 861                                 ctx.canvas.style.height = height + "px";
 862                                 ctx.canvas.height = height * window.devicePixelRatio;
 863                                 ctx.canvas.width = width * window.devicePixelRatio;
 864                                 ctx.scale(window.devicePixelRatio, window.devicePixelRatio);
 865                         }
 866                 },
 867                 //-- Canvas methods
 868                 clear = helpers.clear = function(chart){
 869                         chart.ctx.clearRect(0,0,chart.width,chart.height);
 870                 },
 871                 fontString = helpers.fontString = function(pixelSize,fontStyle,fontFamily){
 872                         return fontStyle + " " + pixelSize+"px " + fontFamily;
 873                 },
 874                 longestText = helpers.longestText = function(ctx,font,arrayOfStrings){
 875                         ctx.font = font;
 876                         var longest = 0;
 877                         each(arrayOfStrings,function(string){
 878                                 var textWidth = ctx.measureText(string).width;
 879                                 longest = (textWidth > longest) ? textWidth : longest;
 880                         });
 881                         return longest;
 882                 },
 883                 drawRoundedRectangle = helpers.drawRoundedRectangle = function(ctx,x,y,width,height,radius){
 884                         ctx.beginPath();
 885                         ctx.moveTo(x + radius, y);
 886                         ctx.lineTo(x + width - radius, y);
 887                         ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
 888                         ctx.lineTo(x + width, y + height - radius);
 889                         ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
 890                         ctx.lineTo(x + radius, y + height);
 891                         ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
 892                         ctx.lineTo(x, y + radius);
 893                         ctx.quadraticCurveTo(x, y, x + radius, y);
 894                         ctx.closePath();
 895                 };
 896
 897
 898         //Store a reference to each instance - allowing us to globally resize chart instances on window resize.
 899         //Destroy method on the chart will remove the instance of the chart from this reference.
 900         Chart.instances = {};
 901
 902         Chart.Type = function(data,options,chart){
 903                 this.options = options;
 904                 this.chart = chart;
 905                 this.id = uid();
 906                 //Add the chart instance to the global namespace
 907                 Chart.instances[this.id] = this;
 908
 909                 // Initialize is always called when a chart type is created
 910                 // By default it is a no op, but it should be extended
 911                 if (options.responsive){
 912                         this.resize();
 913                 }
 914                 this.initialize.call(this,data);
 915         };
 916
 917         //Core methods that'll be a part of every chart type
 918         extend(Chart.Type.prototype,{
 919                 initialize : function(){return this;},
 920                 clear : function(){
 921                         clear(this.chart);
 922                         return this;
 923                 },
 924                 stop : function(){
 925                         // Stops any current animation loop occuring
 926                         Chart.animationService.cancelAnimation(this);
 927                         return this;
 928                 },
 929                 resize : function(callback){
 930                         this.stop();
 931                         var canvas = this.chart.canvas,
 932                                 newWidth = getMaximumWidth(this.chart.canvas),
 933                                 newHeight = this.options.maintainAspectRatio ? newWidth / this.chart.aspectRatio : getMaximumHeight(this.chart.canvas);
 934
 935                         canvas.width = this.chart.width = newWidth;
 936                         canvas.height = this.chart.height = newHeight;
 937
 938                         retinaScale(this.chart);
 939
 940                         if (typeof callback === "function"){
 941                                 callback.apply(this, Array.prototype.slice.call(arguments, 1));
 942                         }
 943                         return this;
 944                 },
 945                 reflow : noop,
 946                 render : function(reflow){
 947                         if (reflow){
 948                                 this.reflow();
 949                         }
 950
 951                         if (this.options.animation && !reflow){
 952                                 var animation = new Chart.Animation();
 953                                 animation.numSteps = this.options.animationSteps;
 954                                 animation.easing = this.options.animationEasing;
 955
 956                                 // render function
 957                                 animation.render = function(chartInstance, animationObject) {
 958                                         var easingFunction = helpers.easingEffects[animationObject.easing];
 959                                         var stepDecimal = animationObject.currentStep / animationObject.numSteps;
 960                                         var easeDecimal = easingFunction(stepDecimal);
 961
 962                                         chartInstance.draw(easeDecimal, stepDecimal, animationObject.currentStep);
 963                                 };
 964
 965                                 // user events
 966                                 animation.onAnimationProgress = this.options.onAnimationProgress;
 967                                 animation.onAnimationComplete = this.options.onAnimationComplete;
 968
 969                                 Chart.animationService.addAnimation(this, animation);
 970                         }
 971                         else{
 972                                 this.draw();
 973                                 this.options.onAnimationComplete.call(this);
 974                         }
 975                         return this;
 976                 },
 977                 generateLegend : function(){
 978                         return helpers.template(this.options.legendTemplate, this);
 979                 },
 980                 destroy : function(){
 981                         this.stop();
 982                         this.clear();
 983                         unbindEvents(this, this.events);
 984                         var canvas = this.chart.canvas;
 985
 986                         // Reset canvas height/width attributes starts a fresh with the canvas context
 987                         canvas.width = this.chart.width;
 988                         canvas.height = this.chart.height;
 989
 990                         // < IE9 doesn't support removeProperty
 991                         if (canvas.style.removeProperty) {
 992                                 canvas.style.removeProperty('width');
 993                                 canvas.style.removeProperty('height');
 994                         } else {
 995                                 canvas.style.removeAttribute('width');
 996                                 canvas.style.removeAttribute('height');
 997                         }
 998
 999                         delete Chart.instances[this.id];
1000                 },
1001                 showTooltip : function(ChartElements, forceRedraw){
1002                         // Only redraw the chart if we've actually changed what we're hovering on.
1003                         if (typeof this.activeElements === 'undefined') this.activeElements = [];
1004
1005                         var isChanged = (function(Elements){
1006                                 var changed = false;
1007
1008                                 if (Elements.length !== this.activeElements.length){
1009                                         changed = true;
1010                                         return changed;
1011                                 }
1012
1013                                 each(Elements, function(element, index){
1014                                         if (element !== this.activeElements[index]){
1015                                                 changed = true;
1016                                         }
1017                                 }, this);
1018                                 return changed;
1019                         }).call(this, ChartElements);
1020
1021                         if (!isChanged && !forceRedraw){
1022                                 return;
1023                         }
1024                         else{
1025                                 this.activeElements = ChartElements;
1026                         }
1027                         this.draw();
1028                         if(this.options.customTooltips){
1029                                 this.options.customTooltips(false);
1030                         }
1031                         if (ChartElements.length > 0){
1032                                 // If we have multiple datasets, show a MultiTooltip for all of the data points at that index
1033                                 if (this.datasets && this.datasets.length > 1) {
1034                                         var dataArray,
1035                                                 dataIndex;
1036
1037                                         for (var i = this.datasets.length - 1; i >= 0; i--) {
1038                                                 dataArray = this.datasets[i].points || this.datasets[i].bars || this.datasets[i].segments;
1039                                                 dataIndex = indexOf(dataArray, ChartElements[0]);
1040                                                 if (dataIndex !== -1){
1041                                                         break;
1042                                                 }
1043                                         }
1044                                         var tooltipLabels = [],
1045                                                 tooltipColors = [],
1046                                                 medianPosition = (function(index) {
1047
1048                                                         // Get all the points at that particular index
1049                                                         var Elements = [],
1050                                                                 dataCollection,
1051                                                                 xPositions = [],
1052                                                                 yPositions = [],
1053                                                                 xMax,
1054                                                                 yMax,
1055                                                                 xMin,
1056                                                                 yMin;
1057                                                         helpers.each(this.datasets, function(dataset){
1058                                                                 dataCollection = dataset.points || dataset.bars || dataset.segments;
1059                                                                 if (dataCollection[dataIndex] && dataCollection[dataIndex].hasValue()){
1060                                                                         Elements.push(dataCollection[dataIndex]);
1061                                                                 }
1062                                                         });
1063
1064                                                         helpers.each(Elements, function(element) {
1065                                                                 xPositions.push(element.x);
1066                                                                 yPositions.push(element.y);
1067
1068
1069                                                                 //Include any colour information about the element
1070                                                                 tooltipLabels.push(helpers.template(this.options.multiTooltipTemplate, element));
1071                                                                 tooltipColors.push({
1072                                                                         fill: element._saved.fillColor || element.fillColor,
1073                                                                         stroke: element._saved.strokeColor || element.strokeColor
1074                                                                 });
1075
1076                                                         }, this);
1077
1078                                                         yMin = min(yPositions);
1079                                                         yMax = max(yPositions);
1080
1081                                                         xMin = min(xPositions);
1082                                                         xMax = max(xPositions);
1083
1084                                                         return {
1085                                                                 x: (xMin > this.chart.width/2) ? xMin : xMax,
1086                                                                 y: (yMin + yMax)/2
1087                                                         };
1088                                                 }).call(this, dataIndex);
1089
1090                                         new Chart.MultiTooltip({
1091                                                 x: medianPosition.x,
1092                                                 y: medianPosition.y,
1093                                                 xPadding: this.options.tooltipXPadding,
1094                                                 yPadding: this.options.tooltipYPadding,
1095                                                 xOffset: this.options.tooltipXOffset,
1096                                                 fillColor: this.options.tooltipFillColor,
1097                                                 textColor: this.options.tooltipFontColor,
1098                                                 fontFamily: this.options.tooltipFontFamily,
1099                                                 fontStyle: this.options.tooltipFontStyle,
1100                                                 fontSize: this.options.tooltipFontSize,
1101                                                 titleTextColor: this.options.tooltipTitleFontColor,
1102                                                 titleFontFamily: this.options.tooltipTitleFontFamily,
1103                                                 titleFontStyle: this.options.tooltipTitleFontStyle,
1104                                                 titleFontSize: this.options.tooltipTitleFontSize,
1105                                                 cornerRadius: this.options.tooltipCornerRadius,
1106                                                 labels: tooltipLabels,
1107                                                 legendColors: tooltipColors,
1108                                                 legendColorBackground : this.options.multiTooltipKeyBackground,
1109                                                 title: template(this.options.tooltipTitleTemplate,ChartElements[0]),
1110                                                 chart: this.chart,
1111                                                 ctx: this.chart.ctx,
1112                                                 custom: this.options.customTooltips
1113                                         }).draw();
1114
1115                                 } else {
1116                                         each(ChartElements, function(Element) {
1117                                                 var tooltipPosition = Element.tooltipPosition();
1118                                                 new Chart.Tooltip({
1119                                                         x: Math.round(tooltipPosition.x),
1120                                                         y: Math.round(tooltipPosition.y),
1121                                                         xPadding: this.options.tooltipXPadding,
1122                                                         yPadding: this.options.tooltipYPadding,
1123                                                         fillColor: this.options.tooltipFillColor,
1124                                                         textColor: this.options.tooltipFontColor,
1125                                                         fontFamily: this.options.tooltipFontFamily,
1126                                                         fontStyle: this.options.tooltipFontStyle,
1127                                                         fontSize: this.options.tooltipFontSize,
1128                                                         caretHeight: this.options.tooltipCaretSize,
1129                                                         cornerRadius: this.options.tooltipCornerRadius,
1130                                                         text: template(this.options.tooltipTemplate, Element),
1131                                                         chart: this.chart,
1132                                                         custom: this.options.customTooltips
1133                                                 }).draw();
1134                                         }, this);
1135                                 }
1136                         }
1137                         return this;
1138                 },
1139                 toBase64Image : function(){
1140                         return this.chart.canvas.toDataURL.apply(this.chart.canvas, arguments);
1141                 }
1142         });
1143
1144         Chart.Type.extend = function(extensions){
1145
1146                 var parent = this;
1147
1148                 var ChartType = function(){
1149                         return parent.apply(this,arguments);
1150                 };
1151
1152                 //Copy the prototype object of the this class
1153                 ChartType.prototype = clone(parent.prototype);
1154                 //Now overwrite some of the properties in the base class with the new extensions
1155                 extend(ChartType.prototype, extensions);
1156
1157                 ChartType.extend = Chart.Type.extend;
1158
1159                 if (extensions.name || parent.prototype.name){
1160
1161                         var chartName = extensions.name || parent.prototype.name;
1162                         //Assign any potential default values of the new chart type
1163
1164                         //If none are defined, we'll use a clone of the chart type this is being extended from.
1165                         //I.e. if we extend a line chart, we'll use the defaults from the line chart if our new chart
1166                         //doesn't define some defaults of their own.
1167
1168                         var baseDefaults = (Chart.defaults[parent.prototype.name]) ? clone(Chart.defaults[parent.prototype.name]) : {};
1169
1170                         Chart.defaults[chartName] = extend(baseDefaults,extensions.defaults);
1171
1172                         Chart.types[chartName] = ChartType;
1173
1174                         //Register this new chart type in the Chart prototype
1175                         Chart.prototype[chartName] = function(data,options){
1176                                 var config = merge(Chart.defaults.global, Chart.defaults[chartName], options || {});
1177                                 return new ChartType(data,config,this);
1178                         };
1179                 } else{
1180                         warn("Name not provided for this chart, so it hasn't been registered");
1181                 }
1182                 return parent;
1183         };
1184
1185         Chart.Element = function(configuration){
1186                 extend(this,configuration);
1187                 this.initialize.apply(this,arguments);
1188                 this.save();
1189         };
1190         extend(Chart.Element.prototype,{
1191                 initialize : function(){},
1192                 restore : function(props){
1193                         if (!props){
1194                                 extend(this,this._saved);
1195                         } else {
1196                                 each(props,function(key){
1197                                         this[key] = this._saved[key];
1198                                 },this);
1199                         }
1200                         return this;
1201                 },
1202                 save : function(){
1203                         this._saved = clone(this);
1204                         delete this._saved._saved;
1205                         return this;
1206                 },
1207                 update : function(newProps){
1208                         each(newProps,function(value,key){
1209                                 this._saved[key] = this[key];
1210                                 this[key] = value;
1211                         },this);
1212                         return this;
1213                 },
1214                 transition : function(props,ease){
1215                         each(props,function(value,key){
1216                                 this[key] = ((value - this._saved[key]) * ease) + this._saved[key];
1217                         },this);
1218                         return this;
1219                 },
1220                 tooltipPosition : function(){
1221                         return {
1222                                 x : this.x,
1223                                 y : this.y
1224                         };
1225                 },
1226                 hasValue: function(){
1227                         return isNumber(this.value);
1228                 }
1229         });
1230
1231         Chart.Element.extend = inherits;
1232
1233
1234         Chart.Point = Chart.Element.extend({
1235                 display: true,
1236                 inRange: function(chartX,chartY){
1237                         var hitDetectionRange = this.hitDetectionRadius + this.radius;
1238                         return ((Math.pow(chartX-this.x, 2)+Math.pow(chartY-this.y, 2)) < Math.pow(hitDetectionRange,2));
1239                 },
1240                 draw : function(){
1241                         if (this.display){
1242                                 var ctx = this.ctx;
1243                                 ctx.beginPath();
1244
1245                                 ctx.arc(this.x, this.y, this.radius, 0, Math.PI*2);
1246                                 ctx.closePath();
1247
1248                                 ctx.strokeStyle = this.strokeColor;
1249                                 ctx.lineWidth = this.strokeWidth;
1250
1251                                 ctx.fillStyle = this.fillColor;
1252
1253                                 ctx.fill();
1254                                 ctx.stroke();
1255                         }
1256
1257
1258                         //Quick debug for bezier curve splining
1259                         //Highlights control points and the line between them.
1260                         //Handy for dev - stripped in the min version.
1261
1262                         // ctx.save();
1263                         // ctx.fillStyle = "black";
1264                         // ctx.strokeStyle = "black"
1265                         // ctx.beginPath();
1266                         // ctx.arc(this.controlPoints.inner.x,this.controlPoints.inner.y, 2, 0, Math.PI*2);
1267                         // ctx.fill();
1268
1269                         // ctx.beginPath();
1270                         // ctx.arc(this.controlPoints.outer.x,this.controlPoints.outer.y, 2, 0, Math.PI*2);
1271                         // ctx.fill();
1272
1273                         // ctx.moveTo(this.controlPoints.inner.x,this.controlPoints.inner.y);
1274                         // ctx.lineTo(this.x, this.y);
1275                         // ctx.lineTo(this.controlPoints.outer.x,this.controlPoints.outer.y);
1276                         // ctx.stroke();
1277
1278                         // ctx.restore();
1279
1280
1281
1282                 }
1283         });
1284
1285         Chart.Arc = Chart.Element.extend({
1286                 inRange : function(chartX,chartY){
1287
1288                         var pointRelativePosition = helpers.getAngleFromPoint(this, {
1289                                 x: chartX,
1290                                 y: chartY
1291                         });
1292
1293                         // Normalize all angles to 0 - 2*PI (0 - 360°)
1294                         var pointRelativeAngle = pointRelativePosition.angle % (Math.PI * 2),
1295                             startAngle = (Math.PI * 2 + this.startAngle) % (Math.PI * 2),
1296                             endAngle = (Math.PI * 2 + this.endAngle) % (Math.PI * 2) || 360;
1297
1298                         // Calculate wether the pointRelativeAngle is between the start and the end angle
1299                         var betweenAngles = (endAngle < startAngle) ?
1300                                 pointRelativeAngle <= endAngle || pointRelativeAngle >= startAngle:
1301                                 pointRelativeAngle >= startAngle && pointRelativeAngle <= endAngle;
1302
1303                         //Check if within the range of the open/close angle
1304                         var withinRadius = (pointRelativePosition.distance >= this.innerRadius && pointRelativePosition.distance <= this.outerRadius);
1305
1306                         return (betweenAngles && withinRadius);
1307                         //Ensure within the outside of the arc centre, but inside arc outer
1308                 },
1309                 tooltipPosition : function(){
1310                         var centreAngle = this.startAngle + ((this.endAngle - this.startAngle) / 2),
1311                                 rangeFromCentre = (this.outerRadius - this.innerRadius) / 2 + this.innerRadius;
1312                         return {
1313                                 x : this.x + (Math.cos(centreAngle) * rangeFromCentre),
1314                                 y : this.y + (Math.sin(centreAngle) * rangeFromCentre)
1315                         };
1316                 },
1317                 draw : function(animationPercent){
1318
1319                         var easingDecimal = animationPercent || 1;
1320
1321                         var ctx = this.ctx;
1322
1323                         ctx.beginPath();
1324
1325                         ctx.arc(this.x, this.y, this.outerRadius < 0 ? 0 : this.outerRadius, this.startAngle, this.endAngle);
1326
1327             ctx.arc(this.x, this.y, this.innerRadius < 0 ? 0 : this.innerRadius, this.endAngle, this.startAngle, true);
1328
1329                         ctx.closePath();
1330                         ctx.strokeStyle = this.strokeColor;
1331                         ctx.lineWidth = this.strokeWidth;
1332
1333                         ctx.fillStyle = this.fillColor;
1334
1335                         ctx.fill();
1336                         ctx.lineJoin = 'bevel';
1337
1338                         if (this.showStroke){
1339                                 ctx.stroke();
1340                         }
1341                 }
1342         });
1343
1344         Chart.Rectangle = Chart.Element.extend({
1345                 draw : function(){
1346                         var ctx = this.ctx,
1347                                 halfWidth = this.width/2,
1348                                 leftX = this.x - halfWidth,
1349                                 rightX = this.x + halfWidth,
1350                                 top = this.base - (this.base - this.y),
1351                                 halfStroke = this.strokeWidth / 2;
1352
1353                         // Canvas doesn't allow us to stroke inside the width so we can
1354                         // adjust the sizes to fit if we're setting a stroke on the line
1355                         if (this.showStroke){
1356                                 leftX += halfStroke;
1357                                 rightX -= halfStroke;
1358                                 top += halfStroke;
1359                         }
1360
1361                         ctx.beginPath();
1362
1363                         ctx.fillStyle = this.fillColor;
1364                         ctx.strokeStyle = this.strokeColor;
1365                         ctx.lineWidth = this.strokeWidth;
1366
1367                         // It'd be nice to keep this class totally generic to any rectangle
1368                         // and simply specify which border to miss out.
1369                         ctx.moveTo(leftX, this.base);
1370                         ctx.lineTo(leftX, top);
1371                         ctx.lineTo(rightX, top);
1372                         ctx.lineTo(rightX, this.base);
1373                         ctx.fill();
1374                         if (this.showStroke){
1375                                 ctx.stroke();
1376                         }
1377                 },
1378                 height : function(){
1379                         return this.base - this.y;
1380                 },
1381                 inRange : function(chartX,chartY){
1382                         return (chartX >= this.x - this.width/2 && chartX <= this.x + this.width/2) && (chartY >= this.y && chartY <= this.base);
1383                 }
1384         });
1385
1386         Chart.Animation = Chart.Element.extend({
1387                 currentStep: null, // the current animation step
1388                 numSteps: 60, // default number of steps
1389                 easing: "", // the easing to use for this animation
1390                 render: null, // render function used by the animation service
1391
1392                 onAnimationProgress: null, // user specified callback to fire on each step of the animation
1393                 onAnimationComplete: null, // user specified callback to fire when the animation finishes
1394         });
1395
1396         Chart.Tooltip = Chart.Element.extend({
1397                 draw : function(){
1398
1399                         var ctx = this.chart.ctx;
1400
1401                         ctx.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);
1402
1403                         this.xAlign = "center";
1404                         this.yAlign = "above";
1405
1406                         //Distance between the actual element.y position and the start of the tooltip caret
1407                         var caretPadding = this.caretPadding = 2;
1408
1409                         var tooltipWidth = ctx.measureText(this.text).width + 2*this.xPadding,
1410                                 tooltipRectHeight = this.fontSize + 2*this.yPadding,
1411                                 tooltipHeight = tooltipRectHeight + this.caretHeight + caretPadding;
1412
1413                         if (this.x + tooltipWidth/2 >this.chart.width){
1414                                 this.xAlign = "left";
1415                         } else if (this.x - tooltipWidth/2 < 0){
1416                                 this.xAlign = "right";
1417                         }
1418
1419                         if (this.y - tooltipHeight < 0){
1420                                 this.yAlign = "below";
1421                         }
1422
1423
1424                         var tooltipX = this.x - tooltipWidth/2,
1425                                 tooltipY = this.y - tooltipHeight;
1426
1427                         ctx.fillStyle = this.fillColor;
1428
1429                         // Custom Tooltips
1430                         if(this.custom){
1431                                 this.custom(this);
1432                         }
1433                         else{
1434                                 switch(this.yAlign)
1435                                 {
1436                                 case "above":
1437                                         //Draw a caret above the x/y
1438                                         ctx.beginPath();
1439                                         ctx.moveTo(this.x,this.y - caretPadding);
1440                                         ctx.lineTo(this.x + this.caretHeight, this.y - (caretPadding + this.caretHeight));
1441                                         ctx.lineTo(this.x - this.caretHeight, this.y - (caretPadding + this.caretHeight));
1442                                         ctx.closePath();
1443                                         ctx.fill();
1444                                         break;
1445                                 case "below":
1446                                         tooltipY = this.y + caretPadding + this.caretHeight;
1447                                         //Draw a caret below the x/y
1448                                         ctx.beginPath();
1449                                         ctx.moveTo(this.x, this.y + caretPadding);
1450                                         ctx.lineTo(this.x + this.caretHeight, this.y + caretPadding + this.caretHeight);
1451                                         ctx.lineTo(this.x - this.caretHeight, this.y + caretPadding + this.caretHeight);
1452                                         ctx.closePath();
1453                                         ctx.fill();
1454                                         break;
1455                                 }
1456
1457                                 switch(this.xAlign)
1458                                 {
1459                                 case "left":
1460                                         tooltipX = this.x - tooltipWidth + (this.cornerRadius + this.caretHeight);
1461                                         break;
1462                                 case "right":
1463                                         tooltipX = this.x - (this.cornerRadius + this.caretHeight);
1464                                         break;
1465                                 }
1466
1467                                 drawRoundedRectangle(ctx,tooltipX,tooltipY,tooltipWidth,tooltipRectHeight,this.cornerRadius);
1468
1469                                 ctx.fill();
1470
1471                                 ctx.fillStyle = this.textColor;
1472                                 ctx.textAlign = "center";
1473                                 ctx.textBaseline = "middle";
1474                                 ctx.fillText(this.text, tooltipX + tooltipWidth/2, tooltipY + tooltipRectHeight/2);
1475                         }
1476                 }
1477         });
1478
1479         Chart.MultiTooltip = Chart.Element.extend({
1480                 initialize : function(){
1481                         this.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);
1482
1483                         this.titleFont = fontString(this.titleFontSize,this.titleFontStyle,this.titleFontFamily);
1484
1485                         this.titleHeight = this.title ? this.titleFontSize * 1.5 : 0;
1486                         this.height = (this.labels.length * this.fontSize) + ((this.labels.length-1) * (this.fontSize/2)) + (this.yPadding*2) + this.titleHeight;
1487
1488                         this.ctx.font = this.titleFont;
1489
1490                         var titleWidth = this.ctx.measureText(this.title).width,
1491                                 //Label has a legend square as well so account for this.
1492                                 labelWidth = longestText(this.ctx,this.font,this.labels) + this.fontSize + 3,
1493                                 longestTextWidth = max([labelWidth,titleWidth]);
1494
1495                         this.width = longestTextWidth + (this.xPadding*2);
1496
1497
1498                         var halfHeight = this.height/2;
1499
1500                         //Check to ensure the height will fit on the canvas
1501                         if (this.y - halfHeight < 0 ){
1502                                 this.y = halfHeight;
1503                         } else if (this.y + halfHeight > this.chart.height){
1504                                 this.y = this.chart.height - halfHeight;
1505                         }
1506
1507                         //Decide whether to align left or right based on position on canvas
1508                         if (this.x > this.chart.width/2){
1509                                 this.x -= this.xOffset + this.width;
1510                         } else {
1511                                 this.x += this.xOffset;
1512                         }
1513
1514
1515                 },
1516                 getLineHeight : function(index){
1517                         var baseLineHeight = this.y - (this.height/2) + this.yPadding,
1518                                 afterTitleIndex = index-1;
1519
1520                         //If the index is zero, we're getting the title
1521                         if (index === 0){
1522                                 return baseLineHeight + this.titleHeight / 3;
1523                         } else{
1524                                 return baseLineHeight + ((this.fontSize * 1.5 * afterTitleIndex) + this.fontSize / 2) + this.titleHeight;
1525                         }
1526
1527                 },
1528                 draw : function(){
1529                         // Custom Tooltips
1530                         if(this.custom){
1531                                 this.custom(this);
1532                         }
1533                         else{
1534                                 drawRoundedRectangle(this.ctx,this.x,this.y - this.height/2,this.width,this.height,this.cornerRadius);
1535                                 var ctx = this.ctx;
1536                                 ctx.fillStyle = this.fillColor;
1537                                 ctx.fill();
1538                                 ctx.closePath();
1539
1540                                 ctx.textAlign = "left";
1541                                 ctx.textBaseline = "middle";
1542                                 ctx.fillStyle = this.titleTextColor;
1543                                 ctx.font = this.titleFont;
1544
1545                                 ctx.fillText(this.title,this.x + this.xPadding, this.getLineHeight(0));
1546
1547                                 ctx.font = this.font;
1548                                 helpers.each(this.labels,function(label,index){
1549                                         ctx.fillStyle = this.textColor;
1550                                         ctx.fillText(label,this.x + this.xPadding + this.fontSize + 3, this.getLineHeight(index + 1));
1551
1552                                         //A bit gnarly, but clearing this rectangle breaks when using explorercanvas (clears whole canvas)
1553                                         //ctx.clearRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);
1554                                         //Instead we'll make a white filled block to put the legendColour palette over.
1555
1556                                         ctx.fillStyle = this.legendColorBackground;
1557                                         ctx.fillRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);
1558
1559                                         ctx.fillStyle = this.legendColors[index].fill;
1560                                         ctx.fillRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize);
1561
1562
1563                                 },this);
1564                         }
1565                 }
1566         });
1567
1568         Chart.Scale = Chart.Element.extend({
1569                 initialize : function(){
1570                         this.fit();
1571                 },
1572                 buildYLabels : function(){
1573                         this.yLabels = [];
1574
1575                         var stepDecimalPlaces = getDecimalPlaces(this.stepValue);
1576
1577                         for (var i=0; i<=this.steps; i++){
1578                                 this.yLabels.push(template(this.templateString,{value:(this.min + (i * this.stepValue)).toFixed(stepDecimalPlaces)}));
1579                         }
1580                         this.yLabelWidth = (this.display && this.showLabels) ? longestText(this.ctx,this.font,this.yLabels) + 10 : 0;
1581                 },
1582                 addXLabel : function(label){
1583                         this.xLabels.push(label);
1584                         this.valuesCount++;
1585                         this.fit();
1586                 },
1587                 removeXLabel : function(){
1588                         this.xLabels.shift();
1589                         this.valuesCount--;
1590                         this.fit();
1591                 },
1592                 // Fitting loop to rotate x Labels and figure out what fits there, and also calculate how many Y steps to use
1593                 fit: function(){
1594                         // First we need the width of the yLabels, assuming the xLabels aren't rotated
1595
1596                         // To do that we need the base line at the top and base of the chart, assuming there is no x label rotation
1597                         this.startPoint = (this.display) ? this.fontSize : 0;
1598                         this.endPoint = (this.display) ? this.height - (this.fontSize * 1.5) - 5 : this.height; // -5 to pad labels
1599
1600                         // Apply padding settings to the start and end point.
1601                         this.startPoint += this.padding;
1602                         this.endPoint -= this.padding;
1603
1604                         // Cache the starting endpoint, excluding the space for x labels
1605                         var cachedEndPoint = this.endPoint;
1606
1607                         // Cache the starting height, so can determine if we need to recalculate the scale yAxis
1608                         var cachedHeight = this.endPoint - this.startPoint,
1609                                 cachedYLabelWidth;
1610
1611                         // Build the current yLabels so we have an idea of what size they'll be to start
1612                         /*
1613                          *      This sets what is returned from calculateScaleRange as static properties of this class:
1614                          *
1615                                 this.steps;
1616                                 this.stepValue;
1617                                 this.min;
1618                                 this.max;
1619                          *
1620                          */
1621                         this.calculateYRange(cachedHeight);
1622
1623                         // With these properties set we can now build the array of yLabels
1624                         // and also the width of the largest yLabel
1625                         this.buildYLabels();
1626
1627                         this.calculateXLabelRotation();
1628
1629                         while((cachedHeight > this.endPoint - this.startPoint)){
1630                                 cachedHeight = this.endPoint - this.startPoint;
1631                                 cachedYLabelWidth = this.yLabelWidth;
1632
1633                                 this.calculateYRange(cachedHeight);
1634                                 this.buildYLabels();
1635
1636                                 // Only go through the xLabel loop again if the yLabel width has changed
1637                                 if (cachedYLabelWidth < this.yLabelWidth){
1638                                         this.endPoint = cachedEndPoint;
1639                                         this.calculateXLabelRotation();
1640                                 }
1641                         }
1642
1643                 },
1644                 calculateXLabelRotation : function(){
1645                         //Get the width of each grid by calculating the difference
1646                         //between x offsets between 0 and 1.
1647
1648                         this.ctx.font = this.font;
1649
1650                         var firstWidth = this.ctx.measureText(this.xLabels[0]).width,
1651                                 lastWidth = this.ctx.measureText(this.xLabels[this.xLabels.length - 1]).width,
1652                                 firstRotated,
1653                                 lastRotated;
1654
1655
1656                         this.xScalePaddingRight = lastWidth/2 + 3;
1657                         this.xScalePaddingLeft = (firstWidth/2 > this.yLabelWidth) ? firstWidth/2 : this.yLabelWidth;
1658
1659                         this.xLabelRotation = 0;
1660                         if (this.display){
1661                                 var originalLabelWidth = longestText(this.ctx,this.font,this.xLabels),
1662                                         cosRotation,
1663                                         firstRotatedWidth;
1664                                 this.xLabelWidth = originalLabelWidth;
1665                                 //Allow 3 pixels x2 padding either side for label readability
1666                                 var xGridWidth = Math.floor(this.calculateX(1) - this.calculateX(0)) - 6;
1667
1668                                 //Max label rotate should be 90 - also act as a loop counter
1669                                 while ((this.xLabelWidth > xGridWidth && this.xLabelRotation === 0) || (this.xLabelWidth > xGridWidth && this.xLabelRotation <= 90 && this.xLabelRotation > 0)){
1670                                         cosRotation = Math.cos(toRadians(this.xLabelRotation));
1671
1672                                         firstRotated = cosRotation * firstWidth;
1673                                         lastRotated = cosRotation * lastWidth;
1674
1675                                         // We're right aligning the text now.
1676                                         if (firstRotated + this.fontSize / 2 > this.yLabelWidth){
1677                                                 this.xScalePaddingLeft = firstRotated + this.fontSize / 2;
1678                                         }
1679                                         this.xScalePaddingRight = this.fontSize/2;
1680
1681
1682                                         this.xLabelRotation++;
1683                                         this.xLabelWidth = cosRotation * originalLabelWidth;
1684
1685                                 }
1686                                 if (this.xLabelRotation > 0){
1687                                         this.endPoint -= Math.sin(toRadians(this.xLabelRotation))*originalLabelWidth + 3;
1688                                 }
1689                         }
1690                         else{
1691                                 this.xLabelWidth = 0;
1692                                 this.xScalePaddingRight = this.padding;
1693                                 this.xScalePaddingLeft = this.padding;
1694                         }
1695
1696                 },
1697                 // Needs to be overidden in each Chart type
1698                 // Otherwise we need to pass all the data into the scale class
1699                 calculateYRange: noop,
1700                 drawingArea: function(){
1701                         return this.startPoint - this.endPoint;
1702                 },
1703                 calculateY : function(value){
1704                         var scalingFactor = this.drawingArea() / (this.min - this.max);
1705                         return this.endPoint - (scalingFactor * (value - this.min));
1706                 },
1707                 calculateX : function(index){
1708                         var isRotated = (this.xLabelRotation > 0),
1709                                 // innerWidth = (this.offsetGridLines) ? this.width - offsetLeft - this.padding : this.width - (offsetLeft + halfLabelWidth * 2) - this.padding,
1710                                 innerWidth = this.width - (this.xScalePaddingLeft + this.xScalePaddingRight),
1711                                 valueWidth = innerWidth/Math.max((this.valuesCount - ((this.offsetGridLines) ? 0 : 1)), 1),
1712                                 valueOffset = (valueWidth * index) + this.xScalePaddingLeft;
1713
1714                         if (this.offsetGridLines){
1715                                 valueOffset += (valueWidth/2);
1716                         }
1717
1718                         return Math.round(valueOffset);
1719                 },
1720                 update : function(newProps){
1721                         helpers.extend(this, newProps);
1722                         this.fit();
1723                 },
1724                 draw : function(){
1725                         var ctx = this.ctx,
1726                                 yLabelGap = (this.endPoint - this.startPoint) / this.steps,
1727                                 xStart = Math.round(this.xScalePaddingLeft);
1728                         if (this.display){
1729                                 ctx.fillStyle = this.textColor;
1730                                 ctx.font = this.font;
1731                                 each(this.yLabels,function(labelString,index){
1732                                         var yLabelCenter = this.endPoint - (yLabelGap * index),
1733                                                 linePositionY = Math.round(yLabelCenter),
1734                                                 drawHorizontalLine = this.showHorizontalLines;
1735
1736                                         ctx.textAlign = "right";
1737                                         ctx.textBaseline = "middle";
1738                                         if (this.showLabels){
1739                                                 ctx.fillText(labelString,xStart - 10,yLabelCenter);
1740                                         }
1741
1742                                         // This is X axis, so draw it
1743                                         if (index === 0 && !drawHorizontalLine){
1744                                                 drawHorizontalLine = true;
1745                                         }
1746
1747                                         if (drawHorizontalLine){
1748                                                 ctx.beginPath();
1749                                         }
1750
1751                                         if (index > 0){
1752                                                 // This is a grid line in the centre, so drop that
1753                                                 ctx.lineWidth = this.gridLineWidth;
1754                                                 ctx.strokeStyle = this.gridLineColor;
1755                                         } else {
1756                                                 // This is the first line on the scale
1757                                                 ctx.lineWidth = this.lineWidth;
1758                                                 ctx.strokeStyle = this.lineColor;
1759                                         }
1760
1761                                         linePositionY += helpers.aliasPixel(ctx.lineWidth);
1762
1763                                         if(drawHorizontalLine){
1764                                                 ctx.moveTo(xStart, linePositionY);
1765                                                 ctx.lineTo(this.width, linePositionY);
1766                                                 ctx.stroke();
1767                                                 ctx.closePath();
1768                                         }
1769
1770                                         ctx.lineWidth = this.lineWidth;
1771                                         ctx.strokeStyle = this.lineColor;
1772                                         ctx.beginPath();
1773                                         ctx.moveTo(xStart - 5, linePositionY);
1774                                         ctx.lineTo(xStart, linePositionY);
1775                                         ctx.stroke();
1776                                         ctx.closePath();
1777
1778                                 },this);
1779
1780                                 each(this.xLabels,function(label,index){
1781                                         var xPos = this.calculateX(index) + aliasPixel(this.lineWidth),
1782                                                 // Check to see if line/bar here and decide where to place the line
1783                                                 linePos = this.calculateX(index - (this.offsetGridLines ? 0.5 : 0)) + aliasPixel(this.lineWidth),
1784                                                 isRotated = (this.xLabelRotation > 0),
1785                                                 drawVerticalLine = this.showVerticalLines;
1786
1787                                         // This is Y axis, so draw it
1788                                         if (index === 0 && !drawVerticalLine){
1789                                                 drawVerticalLine = true;
1790                                         }
1791
1792                                         if (drawVerticalLine){
1793                                                 ctx.beginPath();
1794                                         }
1795
1796                                         if (index > 0){
1797                                                 // This is a grid line in the centre, so drop that
1798                                                 ctx.lineWidth = this.gridLineWidth;
1799                                                 ctx.strokeStyle = this.gridLineColor;
1800                                         } else {
1801                                                 // This is the first line on the scale
1802                                                 ctx.lineWidth = this.lineWidth;
1803                                                 ctx.strokeStyle = this.lineColor;
1804                                         }
1805
1806                                         if (drawVerticalLine){
1807                                                 ctx.moveTo(linePos,this.endPoint);
1808                                                 ctx.lineTo(linePos,this.startPoint - 3);
1809                                                 ctx.stroke();
1810                                                 ctx.closePath();
1811                                         }
1812
1813
1814                                         ctx.lineWidth = this.lineWidth;
1815                                         ctx.strokeStyle = this.lineColor;
1816
1817
1818                                         // Small lines at the bottom of the base grid line
1819                                         ctx.beginPath();
1820                                         ctx.moveTo(linePos,this.endPoint);
1821                                         ctx.lineTo(linePos,this.endPoint + 5);
1822                                         ctx.stroke();
1823                                         ctx.closePath();
1824
1825                                         ctx.save();
1826                                         ctx.translate(xPos,(isRotated) ? this.endPoint + 12 : this.endPoint + 8);
1827                                         ctx.rotate(toRadians(this.xLabelRotation)*-1);
1828                                         ctx.font = this.font;
1829                                         ctx.textAlign = (isRotated) ? "right" : "center";
1830                                         ctx.textBaseline = (isRotated) ? "middle" : "top";
1831                                         ctx.fillText(label, 0, 0);
1832                                         ctx.restore();
1833                                 },this);
1834
1835                         }
1836                 }
1837
1838         });
1839
1840         Chart.RadialScale = Chart.Element.extend({
1841                 initialize: function(){
1842                         this.size = min([this.height, this.width]);
1843                         this.drawingArea = (this.display) ? (this.size/2) - (this.fontSize/2 + this.backdropPaddingY) : (this.size/2);
1844                 },
1845                 calculateCenterOffset: function(value){
1846                         // Take into account half font size + the yPadding of the top value
1847                         var scalingFactor = this.drawingArea / (this.max - this.min);
1848
1849                         return (value - this.min) * scalingFactor;
1850                 },
1851                 update : function(){
1852                         if (!this.lineArc){
1853                                 this.setScaleSize();
1854                         } else {
1855                                 this.drawingArea = (this.display) ? (this.size/2) - (this.fontSize/2 + this.backdropPaddingY) : (this.size/2);
1856                         }
1857                         this.buildYLabels();
1858                 },
1859                 buildYLabels: function(){
1860                         this.yLabels = [];
1861
1862                         var stepDecimalPlaces = getDecimalPlaces(this.stepValue);
1863
1864                         for (var i=0; i<=this.steps; i++){
1865                                 this.yLabels.push(template(this.templateString,{value:(this.min + (i * this.stepValue)).toFixed(stepDecimalPlaces)}));
1866                         }
1867                 },
1868                 getCircumference : function(){
1869                         return ((Math.PI*2) / this.valuesCount);
1870                 },
1871                 setScaleSize: function(){
1872                         /*
1873                          * Right, this is really confusing and there is a lot of maths going on here
1874                          * The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
1875                          *
1876                          * Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
1877                          *
1878                          * Solution:
1879                          *
1880                          * We assume the radius of the polygon is half the size of the canvas at first
1881                          * at each index we check if the text overlaps.
1882                          *
1883                          * Where it does, we store that angle and that index.
1884                          *
1885                          * After finding the largest index and angle we calculate how much we need to remove
1886                          * from the shape radius to move the point inwards by that x.
1887                          *
1888                          * We average the left and right distances to get the maximum shape radius that can fit in the box
1889                          * along with labels.
1890                          *
1891                          * Once we have that, we can find the centre point for the chart, by taking the x text protrusion
1892                          * on each side, removing that from the size, halving it and adding the left x protrusion width.
1893                          *
1894                          * This will mean we have a shape fitted to the canvas, as large as it can be with the labels
1895                          * and position it in the most space efficient manner
1896                          *
1897                          * https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif
1898                          */
1899
1900
1901                         // Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.
1902                         // Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points
1903                         var largestPossibleRadius = min([(this.height/2 - this.pointLabelFontSize - 5), this.width/2]),
1904                                 pointPosition,
1905                                 i,
1906                                 textWidth,
1907                                 halfTextWidth,
1908                                 furthestRight = this.width,
1909                                 furthestRightIndex,
1910                                 furthestRightAngle,
1911                                 furthestLeft = 0,
1912                                 furthestLeftIndex,
1913                                 furthestLeftAngle,
1914                                 xProtrusionLeft,
1915                                 xProtrusionRight,
1916                                 radiusReductionRight,
1917                                 radiusReductionLeft,
1918                                 maxWidthRadius;
1919                         this.ctx.font = fontString(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily);
1920                         for (i=0;i<this.valuesCount;i++){
1921                                 // 5px to space the text slightly out - similar to what we do in the draw function.
1922                                 pointPosition = this.getPointPosition(i, largestPossibleRadius);
1923                                 textWidth = this.ctx.measureText(template(this.templateString, { value: this.labels[i] })).width + 5;
1924                                 if (i === 0 || i === this.valuesCount/2){
1925                                         // If we're at index zero, or exactly the middle, we're at exactly the top/bottom
1926                                         // of the radar chart, so text will be aligned centrally, so we'll half it and compare
1927                                         // w/left and right text sizes
1928                                         halfTextWidth = textWidth/2;
1929                                         if (pointPosition.x + halfTextWidth > furthestRight) {
1930                                                 furthestRight = pointPosition.x + halfTextWidth;
1931                                                 furthestRightIndex = i;
1932                                         }
1933                                         if (pointPosition.x - halfTextWidth < furthestLeft) {
1934                                                 furthestLeft = pointPosition.x - halfTextWidth;
1935                                                 furthestLeftIndex = i;
1936                                         }
1937                                 }
1938                                 else if (i < this.valuesCount/2) {
1939                                         // Less than half the values means we'll left align the text
1940                                         if (pointPosition.x + textWidth > furthestRight) {
1941                                                 furthestRight = pointPosition.x + textWidth;
1942                                                 furthestRightIndex = i;
1943                                         }
1944                                 }
1945                                 else if (i > this.valuesCount/2){
1946                                         // More than half the values means we'll right align the text
1947                                         if (pointPosition.x - textWidth < furthestLeft) {
1948                                                 furthestLeft = pointPosition.x - textWidth;
1949                                                 furthestLeftIndex = i;
1950                                         }
1951                                 }
1952                         }
1953
1954                         xProtrusionLeft = furthestLeft;
1955
1956                         xProtrusionRight = Math.ceil(furthestRight - this.width);
1957
1958                         furthestRightAngle = this.getIndexAngle(furthestRightIndex);
1959
1960                         furthestLeftAngle = this.getIndexAngle(furthestLeftIndex);
1961
1962                         radiusReductionRight = xProtrusionRight / Math.sin(furthestRightAngle + Math.PI/2);
1963
1964                         radiusReductionLeft = xProtrusionLeft / Math.sin(furthestLeftAngle + Math.PI/2);
1965
1966                         // Ensure we actually need to reduce the size of the chart
1967                         radiusReductionRight = (isNumber(radiusReductionRight)) ? radiusReductionRight : 0;
1968                         radiusReductionLeft = (isNumber(radiusReductionLeft)) ? radiusReductionLeft : 0;
1969
1970                         this.drawingArea = largestPossibleRadius - (radiusReductionLeft + radiusReductionRight)/2;
1971
1972                         //this.drawingArea = min([maxWidthRadius, (this.height - (2 * (this.pointLabelFontSize + 5)))/2])
1973                         this.setCenterPoint(radiusReductionLeft, radiusReductionRight);
1974
1975                 },
1976                 setCenterPoint: function(leftMovement, rightMovement){
1977
1978                         var maxRight = this.width - rightMovement - this.drawingArea,
1979                                 maxLeft = leftMovement + this.drawingArea;
1980
1981                         this.xCenter = (maxLeft + maxRight)/2;
1982                         // Always vertically in the centre as the text height doesn't change
1983                         this.yCenter = (this.height/2);
1984                 },
1985
1986                 getIndexAngle : function(index){
1987                         var angleMultiplier = (Math.PI * 2) / this.valuesCount;
1988                         // Start from the top instead of right, so remove a quarter of the circle
1989
1990                         return index * angleMultiplier - (Math.PI/2);
1991                 },
1992                 getPointPosition : function(index, distanceFromCenter){
1993                         var thisAngle = this.getIndexAngle(index);
1994                         return {
1995                                 x : (Math.cos(thisAngle) * distanceFromCenter) + this.xCenter,
1996                                 y : (Math.sin(thisAngle) * distanceFromCenter) + this.yCenter
1997                         };
1998                 },
1999                 draw: function(){
2000                         if (this.display){
2001                                 var ctx = this.ctx;
2002                                 each(this.yLabels, function(label, index){
2003                                         // Don't draw a centre value
2004                                         if (index > 0){
2005                                                 var yCenterOffset = index * (this.drawingArea/this.steps),
2006                                                         yHeight = this.yCenter - yCenterOffset,
2007                                                         pointPosition;
2008
2009                                                 // Draw circular lines around the scale
2010                                                 if (this.lineWidth > 0){
2011                                                         ctx.strokeStyle = this.lineColor;
2012                                                         ctx.lineWidth = this.lineWidth;
2013
2014                                                         if(this.lineArc){
2015                                                                 ctx.beginPath();
2016                                                                 ctx.arc(this.xCenter, this.yCenter, yCenterOffset, 0, Math.PI*2);
2017                                                                 ctx.closePath();
2018                                                                 ctx.stroke();
2019                                                         } else{
2020                                                                 ctx.beginPath();
2021                                                                 for (var i=0;i<this.valuesCount;i++)
2022                                                                 {
2023                                                                         pointPosition = this.getPointPosition(i, this.calculateCenterOffset(this.min + (index * this.stepValue)));
2024                                                                         if (i === 0){
2025                                                                                 ctx.moveTo(pointPosition.x, pointPosition.y);
2026                                                                         } else {
2027                                                                                 ctx.lineTo(pointPosition.x, pointPosition.y);
2028                                                                         }
2029                                                                 }
2030                                                                 ctx.closePath();
2031                                                                 ctx.stroke();
2032                                                         }
2033                                                 }
2034                                                 if(this.showLabels){
2035                                                         ctx.font = fontString(this.fontSize,this.fontStyle,this.fontFamily);
2036                                                         if (this.showLabelBackdrop){
2037                                                                 var labelWidth = ctx.measureText(label).width;
2038                                                                 ctx.fillStyle = this.backdropColor;
2039                                                                 ctx.fillRect(
2040                                                                         this.xCenter - labelWidth/2 - this.backdropPaddingX,
2041                                                                         yHeight - this.fontSize/2 - this.backdropPaddingY,
2042                                                                         labelWidth + this.backdropPaddingX*2,
2043                                                                         this.fontSize + this.backdropPaddingY*2
2044                                                                 );
2045                                                         }
2046                                                         ctx.textAlign = 'center';
2047                                                         ctx.textBaseline = "middle";
2048                                                         ctx.fillStyle = this.fontColor;
2049                                                         ctx.fillText(label, this.xCenter, yHeight);
2050                                                 }
2051                                         }
2052                                 }, this);
2053
2054                                 if (!this.lineArc){
2055                                         ctx.lineWidth = this.angleLineWidth;
2056                                         ctx.strokeStyle = this.angleLineColor;
2057                                         for (var i = this.valuesCount - 1; i >= 0; i--) {
2058                                                 var centerOffset = null, outerPosition = null;
2059
2060                                                 if (this.angleLineWidth > 0 && (i % this.angleLineInterval === 0)){
2061                                                         centerOffset = this.calculateCenterOffset(this.max);
2062                                                         outerPosition = this.getPointPosition(i, centerOffset);
2063                                                         ctx.beginPath();
2064                                                         ctx.moveTo(this.xCenter, this.yCenter);
2065                                                         ctx.lineTo(outerPosition.x, outerPosition.y);
2066                                                         ctx.stroke();
2067                                                         ctx.closePath();
2068                                                 }
2069
2070                                                 if (this.backgroundColors && this.backgroundColors.length == this.valuesCount) {
2071                                                         if (centerOffset == null)
2072                                                                 centerOffset = this.calculateCenterOffset(this.max);
2073
2074                                                         if (outerPosition == null)
2075                                                                 outerPosition = this.getPointPosition(i, centerOffset);
2076
2077                                                         var previousOuterPosition = this.getPointPosition(i === 0 ? this.valuesCount - 1 : i - 1, centerOffset);
2078                                                         var nextOuterPosition = this.getPointPosition(i === this.valuesCount - 1 ? 0 : i + 1, centerOffset);
2079
2080                                                         var previousOuterHalfway = { x: (previousOuterPosition.x + outerPosition.x) / 2, y: (previousOuterPosition.y + outerPosition.y) / 2 };
2081                                                         var nextOuterHalfway = { x: (outerPosition.x + nextOuterPosition.x) / 2, y: (outerPosition.y + nextOuterPosition.y) / 2 };
2082
2083                                                         ctx.beginPath();
2084                                                         ctx.moveTo(this.xCenter, this.yCenter);
2085                                                         ctx.lineTo(previousOuterHalfway.x, previousOuterHalfway.y);
2086                                                         ctx.lineTo(outerPosition.x, outerPosition.y);
2087                                                         ctx.lineTo(nextOuterHalfway.x, nextOuterHalfway.y);
2088                                                         ctx.fillStyle = this.backgroundColors[i];
2089                                                         ctx.fill();
2090                                                         ctx.closePath();
2091                                                 }
2092                                                 // Extra 3px out for some label spacing
2093                                                 var pointLabelPosition = this.getPointPosition(i, this.calculateCenterOffset(this.max) + 5);
2094                                                 ctx.font = fontString(this.pointLabelFontSize,this.pointLabelFontStyle,this.pointLabelFontFamily);
2095                                                 ctx.fillStyle = this.pointLabelFontColor;
2096
2097                                                 var labelsCount = this.labels.length,
2098                                                         halfLabelsCount = this.labels.length/2,
2099                                                         quarterLabelsCount = halfLabelsCount/2,
2100                                                         upperHalf = (i < quarterLabelsCount || i > labelsCount - quarterLabelsCount),
2101                                                         exactQuarter = (i === quarterLabelsCount || i === labelsCount - quarterLabelsCount);
2102                                                 if (i === 0){
2103                                                         ctx.textAlign = 'center';
2104                                                 } else if(i === halfLabelsCount){
2105                                                         ctx.textAlign = 'center';
2106                                                 } else if (i < halfLabelsCount){
2107                                                         ctx.textAlign = 'left';
2108                                                 } else {
2109                                                         ctx.textAlign = 'right';
2110                                                 }
2111
2112                                                 // Set the correct text baseline based on outer positioning
2113                                                 if (exactQuarter){
2114                                                         ctx.textBaseline = 'middle';
2115                                                 } else if (upperHalf){
2116                                                         ctx.textBaseline = 'bottom';
2117                                                 } else {
2118                                                         ctx.textBaseline = 'top';
2119                                                 }
2120
2121                                                 ctx.fillText(this.labels[i], pointLabelPosition.x, pointLabelPosition.y);
2122                                         }
2123                                 }
2124                         }
2125                 }
2126         });
2127
2128         Chart.animationService = {
2129                 frameDuration: 17,
2130                 animations: [],
2131                 dropFrames: 0,
2132                 addAnimation: function(chartInstance, animationObject) {
2133                         for (var index = 0; index < this.animations.length; ++ index){
2134                                 if (this.animations[index].chartInstance === chartInstance){
2135                                         // replacing an in progress animation
2136                                         this.animations[index].animationObject = animationObject;
2137                                         return;
2138                                 }
2139                         }
2140
2141                         this.animations.push({
2142                                 chartInstance: chartInstance,
2143                                 animationObject: animationObject
2144                         });
2145
2146                         // If there are no animations queued, manually kickstart a digest, for lack of a better word
2147                         if (this.animations.length == 1) {
2148                                 helpers.requestAnimFrame.call(window, this.digestWrapper);
2149                         }
2150                 },
2151                 // Cancel the animation for a given chart instance
2152                 cancelAnimation: function(chartInstance) {
2153                         var index = helpers.findNextWhere(this.animations, function(animationWrapper) {
2154                                 return animationWrapper.chartInstance === chartInstance;
2155                         });
2156
2157                         if (index)
2158                         {
2159                                 this.animations.splice(index, 1);
2160                         }
2161                 },
2162                 // calls startDigest with the proper context
2163                 digestWrapper: function() {
2164                         Chart.animationService.startDigest.call(Chart.animationService);
2165                 },
2166                 startDigest: function() {
2167
2168                         var startTime = Date.now();
2169                         var framesToDrop = 0;
2170
2171                         if(this.dropFrames > 1){
2172                                 framesToDrop = Math.floor(this.dropFrames);
2173                                 this.dropFrames -= framesToDrop;
2174                         }
2175
2176                         for (var i = 0; i < this.animations.length; i++) {
2177
2178                                 if (this.animations[i].animationObject.currentStep === null){
2179                                         this.animations[i].animationObject.currentStep = 0;
2180                                 }
2181
2182                                 this.animations[i].animationObject.currentStep += 1 + framesToDrop;
2183                                 if(this.animations[i].animationObject.currentStep > this.animations[i].animationObject.numSteps){
2184                                         this.animations[i].animationObject.currentStep = this.animations[i].animationObject.numSteps;
2185                                 }
2186
2187                                 this.animations[i].animationObject.render(this.animations[i].chartInstance, this.animations[i].animationObject);
2188
2189                                 // Check if executed the last frame.
2190                                 if (this.animations[i].animationObject.currentStep == this.animations[i].animationObject.numSteps){
2191                                         // Call onAnimationComplete
2192                                         this.animations[i].animationObject.onAnimationComplete.call(this.animations[i].chartInstance);
2193                                         // Remove the animation.
2194                                         this.animations.splice(i, 1);
2195                                         // Keep the index in place to offset the splice
2196                                         i--;
2197                                 }
2198                         }
2199
2200                         var endTime = Date.now();
2201                         var delay = endTime - startTime - this.frameDuration;
2202                         var frameDelay = delay / this.frameDuration;
2203
2204                         if(frameDelay > 1){
2205                                 this.dropFrames += frameDelay;
2206                         }
2207
2208                         // Do we have more stuff to animate?
2209                         if (this.animations.length > 0){
2210                                 helpers.requestAnimFrame.call(window, this.digestWrapper);
2211                         }
2212                 }
2213         };
2214
2215         // Attach global event to resize each chart instance when the browser resizes
2216         helpers.addEvent(window, "resize", (function(){
2217                 // Basic debounce of resize function so it doesn't hurt performance when resizing browser.
2218                 var timeout;
2219                 return function(){
2220                         clearTimeout(timeout);
2221                         timeout = setTimeout(function(){
2222                                 each(Chart.instances,function(instance){
2223                                         // If the responsive flag is set in the chart instance config
2224                                         // Cascade the resize event down to the chart.
2225                                         if (instance.options.responsive){
2226                                                 instance.resize(instance.render, true);
2227                                         }
2228                                 });
2229                         }, 50);
2230                 };
2231         })());
2232
2233
2234         if (amd) {
2235                 define('Chart', [], function(){
2236                         return Chart;
2237                 });
2238         } else if (typeof module === 'object' && module.exports) {
2239                 module.exports = Chart;
2240         }
2241
2242         root.Chart = Chart;
2243
2244         Chart.noConflict = function(){
2245                 root.Chart = previous;
2246                 return Chart;
2247         };
2248
2249 }).call(this);
2250
2251 (function(){
2252         "use strict";
2253
2254         var root = this,
2255                 Chart = root.Chart,
2256                 helpers = Chart.helpers;
2257
2258
2259         var defaultConfig = {
2260                 //Boolean - Whether the scale should start at zero, or an order of magnitude down from the lowest value
2261                 scaleBeginAtZero : true,
2262
2263                 //Boolean - Whether grid lines are shown across the chart
2264                 scaleShowGridLines : true,
2265
2266                 //String - Colour of the grid lines
2267                 scaleGridLineColor : "rgba(0,0,0,.05)",
2268
2269                 //Number - Width of the grid lines
2270                 scaleGridLineWidth : 1,
2271
2272                 //Boolean - Whether to show horizontal lines (except X axis)
2273                 scaleShowHorizontalLines: true,
2274
2275                 //Boolean - Whether to show vertical lines (except Y axis)
2276                 scaleShowVerticalLines: true,
2277
2278                 //Boolean - If there is a stroke on each bar
2279                 barShowStroke : true,
2280
2281                 //Number - Pixel width of the bar stroke
2282                 barStrokeWidth : 2,
2283
2284                 //Number - Spacing between each of the X value sets
2285                 barValueSpacing : 5,
2286
2287                 //Number - Spacing between data sets within X values
2288                 barDatasetSpacing : 1,
2289
2290                 //String - A legend template
2291                 legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span class=\"<%=name.toLowerCase()%>-legend-icon\" style=\"background-color:<%=datasets[i].fillColor%>\"></span><span class=\"<%=name.toLowerCase()%>-legend-text\"><%if(datasets[i].label){%><%=datasets[i].label%><%}%></span></li><%}%></ul>"
2292
2293         };
2294
2295
2296         Chart.Type.extend({
2297                 name: "Bar",
2298                 defaults : defaultConfig,
2299                 initialize:  function(data){
2300
2301                         //Expose options as a scope variable here so we can access it in the ScaleClass
2302                         var options = this.options;
2303
2304                         this.ScaleClass = Chart.Scale.extend({
2305                                 offsetGridLines : true,
2306                                 calculateBarX : function(datasetCount, datasetIndex, barIndex){
2307                                         //Reusable method for calculating the xPosition of a given bar based on datasetIndex & width of the bar
2308                                         var xWidth = this.calculateBaseWidth(),
2309                                                 xAbsolute = this.calculateX(barIndex) - (xWidth/2),
2310                                                 barWidth = this.calculateBarWidth(datasetCount);
2311
2312                                         return xAbsolute + (barWidth * datasetIndex) + (datasetIndex * options.barDatasetSpacing) + barWidth/2;
2313                                 },
2314                                 calculateBaseWidth : function(){
2315                                         return (this.calculateX(1) - this.calculateX(0)) - (2*options.barValueSpacing);
2316                                 },
2317                                 calculateBarWidth : function(datasetCount){
2318                                         //The padding between datasets is to the right of each bar, providing that there are more than 1 dataset
2319                                         var baseWidth = this.calculateBaseWidth() - ((datasetCount - 1) * options.barDatasetSpacing);
2320
2321                                         return (baseWidth / datasetCount);
2322                                 }
2323                         });
2324
2325                         this.datasets = [];
2326
2327                         //Set up tooltip events on the chart
2328                         if (this.options.showTooltips){
2329                                 helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
2330                                         var activeBars = (evt.type !== 'mouseout') ? this.getBarsAtEvent(evt) : [];
2331
2332                                         this.eachBars(function(bar){
2333                                                 bar.restore(['fillColor', 'strokeColor']);
2334                                         });
2335                                         helpers.each(activeBars, function(activeBar){
2336                                                 if (activeBar) {
2337                                                         activeBar.fillColor = activeBar.highlightFill;
2338                                                         activeBar.strokeColor = activeBar.highlightStroke;
2339                                                 }
2340                                         });
2341                                         this.showTooltip(activeBars);
2342                                 });
2343                         }
2344
2345                         //Declare the extension of the default point, to cater for the options passed in to the constructor
2346                         this.BarClass = Chart.Rectangle.extend({
2347                                 strokeWidth : this.options.barStrokeWidth,
2348                                 showStroke : this.options.barShowStroke,
2349                                 ctx : this.chart.ctx
2350                         });
2351
2352                         //Iterate through each of the datasets, and build this into a property of the chart
2353                         helpers.each(data.datasets,function(dataset,datasetIndex){
2354
2355                                 var datasetObject = {
2356                                         label : dataset.label || null,
2357                                         fillColor : dataset.fillColor,
2358                                         strokeColor : dataset.strokeColor,
2359                                         bars : []
2360                                 };
2361
2362                                 this.datasets.push(datasetObject);
2363
2364                                 helpers.each(dataset.data,function(dataPoint,index){
2365                                         //Add a new point for each piece of data, passing any required data to draw.
2366                                         datasetObject.bars.push(new this.BarClass({
2367                                                 value : dataPoint,
2368                                                 label : data.labels[index],
2369                                                 datasetLabel: dataset.label,
2370                                                 strokeColor : (typeof dataset.strokeColor == 'object') ? dataset.strokeColor[index] : dataset.strokeColor,
2371                                                 fillColor : (typeof dataset.fillColor == 'object') ? dataset.fillColor[index] : dataset.fillColor,
2372                                                 highlightFill : (dataset.highlightFill) ? (typeof dataset.highlightFill == 'object') ? dataset.highlightFill[index] : dataset.highlightFill : (typeof dataset.fillColor == 'object') ? dataset.fillColor[index] : dataset.fillColor,
2373                                                 highlightStroke : (dataset.highlightStroke) ? (typeof dataset.highlightStroke == 'object') ? dataset.highlightStroke[index] : dataset.highlightStroke : (typeof dataset.strokeColor == 'object') ? dataset.strokeColor[index] : dataset.strokeColor
2374                                         }));
2375                                 },this);
2376
2377                         },this);
2378
2379                         this.buildScale(data.labels);
2380
2381                         this.BarClass.prototype.base = this.scale.endPoint;
2382
2383                         this.eachBars(function(bar, index, datasetIndex){
2384                                 helpers.extend(bar, {
2385                                         width : this.scale.calculateBarWidth(this.datasets.length),
2386                                         x: this.scale.calculateBarX(this.datasets.length, datasetIndex, index),
2387                                         y: this.scale.endPoint
2388                                 });
2389                                 bar.save();
2390                         }, this);
2391
2392                         this.render();
2393                 },
2394                 update : function(){
2395                         this.scale.update();
2396                         // Reset any highlight colours before updating.
2397                         helpers.each(this.activeElements, function(activeElement){
2398                                 activeElement.restore(['fillColor', 'strokeColor']);
2399                         });
2400
2401                         this.eachBars(function(bar){
2402                                 bar.save();
2403                         });
2404                         this.render();
2405                 },
2406                 eachBars : function(callback){
2407                         helpers.each(this.datasets,function(dataset, datasetIndex){
2408                                 helpers.each(dataset.bars, callback, this, datasetIndex);
2409                         },this);
2410                 },
2411                 getBarsAtEvent : function(e){
2412                         var barsArray = [],
2413                                 eventPosition = helpers.getRelativePosition(e),
2414                                 datasetIterator = function(dataset){
2415                                         barsArray.push(dataset.bars[barIndex]);
2416                                 },
2417                                 barIndex;
2418
2419                         for (var datasetIndex = 0; datasetIndex < this.datasets.length; datasetIndex++) {
2420                                 for (barIndex = 0; barIndex < this.datasets[datasetIndex].bars.length; barIndex++) {
2421                                         if (this.datasets[datasetIndex].bars[barIndex].inRange(eventPosition.x,eventPosition.y)){
2422                                                 helpers.each(this.datasets, datasetIterator);
2423                                                 return barsArray;
2424                                         }
2425                                 }
2426                         }
2427
2428                         return barsArray;
2429                 },
2430                 buildScale : function(labels){
2431                         var self = this;
2432
2433                         var dataTotal = function(){
2434                                 var values = [];
2435                                 self.eachBars(function(bar){
2436                                         values.push(bar.value);
2437                                 });
2438                                 return values;
2439                         };
2440
2441                         var scaleOptions = {
2442                                 templateString : this.options.scaleLabel,
2443                                 height : this.chart.height,
2444                                 width : this.chart.width,
2445                                 ctx : this.chart.ctx,
2446                                 textColor : this.options.scaleFontColor,
2447                                 fontSize : this.options.scaleFontSize,
2448                                 fontStyle : this.options.scaleFontStyle,
2449                                 fontFamily : this.options.scaleFontFamily,
2450                                 valuesCount : labels.length,
2451                                 beginAtZero : this.options.scaleBeginAtZero,
2452                                 integersOnly : this.options.scaleIntegersOnly,
2453                                 calculateYRange: function(currentHeight){
2454                                         var updatedRanges = helpers.calculateScaleRange(
2455                                                 dataTotal(),
2456                                                 currentHeight,
2457                                                 this.fontSize,
2458                                                 this.beginAtZero,
2459                                                 this.integersOnly
2460                                         );
2461                                         helpers.extend(this, updatedRanges);
2462                                 },
2463                                 xLabels : labels,
2464                                 font : helpers.fontString(this.options.scaleFontSize, this.options.scaleFontStyle, this.options.scaleFontFamily),
2465                                 lineWidth : this.options.scaleLineWidth,
2466                                 lineColor : this.options.scaleLineColor,
2467                                 showHorizontalLines : this.options.scaleShowHorizontalLines,
2468                                 showVerticalLines : this.options.scaleShowVerticalLines,
2469                                 gridLineWidth : (this.options.scaleShowGridLines) ? this.options.scaleGridLineWidth : 0,
2470                                 gridLineColor : (this.options.scaleShowGridLines) ? this.options.scaleGridLineColor : "rgba(0,0,0,0)",
2471                                 padding : (this.options.showScale) ? 0 : (this.options.barShowStroke) ? this.options.barStrokeWidth : 0,
2472                                 showLabels : this.options.scaleShowLabels,
2473                                 display : this.options.showScale
2474                         };
2475
2476                         if (this.options.scaleOverride){
2477                                 helpers.extend(scaleOptions, {
2478                                         calculateYRange: helpers.noop,
2479                                         steps: this.options.scaleSteps,
2480                                         stepValue: this.options.scaleStepWidth,
2481                                         min: this.options.scaleStartValue,
2482                                         max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
2483                                 });
2484                         }
2485
2486                         this.scale = new this.ScaleClass(scaleOptions);
2487                 },
2488                 addData : function(valuesArray,label){
2489                         //Map the values array for each of the datasets
2490                         helpers.each(valuesArray,function(value,datasetIndex){
2491                                 //Add a new point for each piece of data, passing any required data to draw.
2492                                 this.datasets[datasetIndex].bars.push(new this.BarClass({
2493                                         value : value,
2494                                         label : label,
2495                                         datasetLabel: this.datasets[datasetIndex].label,
2496                                         x: this.scale.calculateBarX(this.datasets.length, datasetIndex, this.scale.valuesCount+1),
2497                                         y: this.scale.endPoint,
2498                                         width : this.scale.calculateBarWidth(this.datasets.length),
2499                                         base : this.scale.endPoint,
2500                                         strokeColor : this.datasets[datasetIndex].strokeColor,
2501                                         fillColor : this.datasets[datasetIndex].fillColor
2502                                 }));
2503                         },this);
2504
2505                         this.scale.addXLabel(label);
2506                         //Then re-render the chart.
2507                         this.update();
2508                 },
2509                 removeData : function(){
2510                         this.scale.removeXLabel();
2511                         //Then re-render the chart.
2512                         helpers.each(this.datasets,function(dataset){
2513                                 dataset.bars.shift();
2514                         },this);
2515                         this.update();
2516                 },
2517                 reflow : function(){
2518                         helpers.extend(this.BarClass.prototype,{
2519                                 y: this.scale.endPoint,
2520                                 base : this.scale.endPoint
2521                         });
2522                         var newScaleProps = helpers.extend({
2523                                 height : this.chart.height,
2524                                 width : this.chart.width
2525                         });
2526                         this.scale.update(newScaleProps);
2527                 },
2528                 draw : function(ease){
2529                         var easingDecimal = ease || 1;
2530                         this.clear();
2531
2532                         var ctx = this.chart.ctx;
2533
2534                         this.scale.draw(easingDecimal);
2535
2536                         //Draw all the bars for each dataset
2537                         helpers.each(this.datasets,function(dataset,datasetIndex){
2538                                 helpers.each(dataset.bars,function(bar,index){
2539                                         if (bar.hasValue()){
2540                                                 bar.base = this.scale.endPoint;
2541                                                 //Transition then draw
2542                                                 bar.transition({
2543                                                         x : this.scale.calculateBarX(this.datasets.length, datasetIndex, index),
2544                                                         y : this.scale.calculateY(bar.value),
2545                                                         width : this.scale.calculateBarWidth(this.datasets.length)
2546                                                 }, easingDecimal).draw();
2547                                         }
2548                                 },this);
2549
2550                         },this);
2551                 }
2552         });
2553
2554
2555 }).call(this);
2556
2557 (function(){
2558         "use strict";
2559
2560         var root = this,
2561                 Chart = root.Chart,
2562                 //Cache a local reference to Chart.helpers
2563                 helpers = Chart.helpers;
2564
2565         var defaultConfig = {
2566                 //Boolean - Whether we should show a stroke on each segment
2567                 segmentShowStroke : true,
2568
2569                 //String - The colour of each segment stroke
2570                 segmentStrokeColor : "#fff",
2571
2572                 //Number - The width of each segment stroke
2573                 segmentStrokeWidth : 2,
2574
2575                 //The percentage of the chart that we cut out of the middle.
2576                 percentageInnerCutout : 50,
2577
2578                 //Number - Amount of animation steps
2579                 animationSteps : 100,
2580
2581                 //String - Animation easing effect
2582                 animationEasing : "easeOutBounce",
2583
2584                 //Boolean - Whether we animate the rotation of the Doughnut
2585                 animateRotate : true,
2586
2587                 //Boolean - Whether we animate scaling the Doughnut from the centre
2588                 animateScale : false,
2589
2590                 //String - A legend template
2591                 legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span class=\"<%=name.toLowerCase()%>-legend-icon\" style=\"background-color:<%=segments[i].fillColor%>\"></span><span class=\"<%=name.toLowerCase()%>-legend-text\"><%if(segments[i].label){%><%=segments[i].label%><%}%></span></li><%}%></ul>"
2592
2593         };
2594
2595         Chart.Type.extend({
2596                 //Passing in a name registers this chart in the Chart namespace
2597                 name: "Doughnut",
2598                 //Providing a defaults will also register the defaults in the chart namespace
2599                 defaults : defaultConfig,
2600                 //Initialize is fired when the chart is initialized - Data is passed in as a parameter
2601                 //Config is automatically merged by the core of Chart.js, and is available at this.options
2602                 initialize:  function(data){
2603
2604                         //Declare segments as a static property to prevent inheriting across the Chart type prototype
2605                         this.segments = [];
2606                         this.outerRadius = (helpers.min([this.chart.width,this.chart.height]) - this.options.segmentStrokeWidth/2)/2;
2607
2608                         this.SegmentArc = Chart.Arc.extend({
2609                                 ctx : this.chart.ctx,
2610                                 x : this.chart.width/2,
2611                                 y : this.chart.height/2
2612                         });
2613
2614                         //Set up tooltip events on the chart
2615                         if (this.options.showTooltips){
2616                                 helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
2617                                         var activeSegments = (evt.type !== 'mouseout') ? this.getSegmentsAtEvent(evt) : [];
2618
2619                                         helpers.each(this.segments,function(segment){
2620                                                 segment.restore(["fillColor"]);
2621                                         });
2622                                         helpers.each(activeSegments,function(activeSegment){
2623                                                 activeSegment.fillColor = activeSegment.highlightColor;
2624                                         });
2625                                         this.showTooltip(activeSegments);
2626                                 });
2627                         }
2628                         this.calculateTotal(data);
2629
2630                         helpers.each(data,function(datapoint, index){
2631                                 if (!datapoint.color) {
2632                                         datapoint.color = 'hsl(' + (360 * index / data.length) + ', 100%, 50%)';
2633                                 }
2634                                 this.addData(datapoint, index, true);
2635                         },this);
2636
2637                         this.render();
2638                 },
2639                 getSegmentsAtEvent : function(e){
2640                         var segmentsArray = [];
2641
2642                         var location = helpers.getRelativePosition(e);
2643
2644                         helpers.each(this.segments,function(segment){
2645                                 if (segment.inRange(location.x,location.y)) segmentsArray.push(segment);
2646                         },this);
2647                         return segmentsArray;
2648                 },
2649                 addData : function(segment, atIndex, silent){
2650                         var index = atIndex !== undefined ? atIndex : this.segments.length;
2651                         if ( typeof(segment.color) === "undefined" ) {
2652                                 segment.color = Chart.defaults.global.segmentColorDefault[index % Chart.defaults.global.segmentColorDefault.length];
2653                                 segment.highlight = Chart.defaults.global.segmentHighlightColorDefaults[index % Chart.defaults.global.segmentHighlightColorDefaults.length];
2654                         }
2655                         this.segments.splice(index, 0, new this.SegmentArc({
2656                                 value : segment.value,
2657                                 outerRadius : (this.options.animateScale) ? 0 : this.outerRadius,
2658                                 innerRadius : (this.options.animateScale) ? 0 : (this.outerRadius/100) * this.options.percentageInnerCutout,
2659                                 fillColor : segment.color,
2660                                 highlightColor : segment.highlight || segment.color,
2661                                 showStroke : this.options.segmentShowStroke,
2662                                 strokeWidth : this.options.segmentStrokeWidth,
2663                                 strokeColor : this.options.segmentStrokeColor,
2664                                 startAngle : Math.PI * 1.5,
2665                                 circumference : (this.options.animateRotate) ? 0 : this.calculateCircumference(segment.value),
2666                                 label : segment.label
2667                         }));
2668                         if (!silent){
2669                                 this.reflow();
2670                                 this.update();
2671                         }
2672                 },
2673                 calculateCircumference : function(value) {
2674                         if ( this.total > 0 ) {
2675                                 return (Math.PI*2)*(value / this.total);
2676                         } else {
2677                                 return 0;
2678                         }
2679                 },
2680                 calculateTotal : function(data){
2681                         this.total = 0;
2682                         helpers.each(data,function(segment){
2683                                 this.total += Math.abs(segment.value);
2684                         },this);
2685                 },
2686                 update : function(){
2687                         this.calculateTotal(this.segments);
2688
2689                         // Reset any highlight colours before updating.
2690                         helpers.each(this.activeElements, function(activeElement){
2691                                 activeElement.restore(['fillColor']);
2692                         });
2693
2694                         helpers.each(this.segments,function(segment){
2695                                 segment.save();
2696                         });
2697                         this.render();
2698                 },
2699
2700                 removeData: function(atIndex){
2701                         var indexToDelete = (helpers.isNumber(atIndex)) ? atIndex : this.segments.length-1;
2702                         this.segments.splice(indexToDelete, 1);
2703                         this.reflow();
2704                         this.update();
2705                 },
2706
2707                 reflow : function(){
2708                         helpers.extend(this.SegmentArc.prototype,{
2709                                 x : this.chart.width/2,
2710                                 y : this.chart.height/2
2711                         });
2712                         this.outerRadius = (helpers.min([this.chart.width,this.chart.height]) - this.options.segmentStrokeWidth/2)/2;
2713                         helpers.each(this.segments, function(segment){
2714                                 segment.update({
2715                                         outerRadius : this.outerRadius,
2716                                         innerRadius : (this.outerRadius/100) * this.options.percentageInnerCutout
2717                                 });
2718                         }, this);
2719                 },
2720                 draw : function(easeDecimal){
2721                         var animDecimal = (easeDecimal) ? easeDecimal : 1;
2722                         this.clear();
2723                         helpers.each(this.segments,function(segment,index){
2724                                 segment.transition({
2725                                         circumference : this.calculateCircumference(segment.value),
2726                                         outerRadius : this.outerRadius,
2727                                         innerRadius : (this.outerRadius/100) * this.options.percentageInnerCutout
2728                                 },animDecimal);
2729
2730                                 segment.endAngle = segment.startAngle + segment.circumference;
2731
2732                                 segment.draw();
2733                                 if (index === 0){
2734                                         segment.startAngle = Math.PI * 1.5;
2735                                 }
2736                                 //Check to see if it's the last segment, if not get the next and update the start angle
2737                                 if (index < this.segments.length-1){
2738                                         this.segments[index+1].startAngle = segment.endAngle;
2739                                 }
2740                         },this);
2741
2742                 }
2743         });
2744
2745         Chart.types.Doughnut.extend({
2746                 name : "Pie",
2747                 defaults : helpers.merge(defaultConfig,{percentageInnerCutout : 0})
2748         });
2749
2750 }).call(this);
2751
2752 (function(){
2753         "use strict";
2754
2755         var root = this,
2756                 Chart = root.Chart,
2757                 helpers = Chart.helpers;
2758
2759         var defaultConfig = {
2760
2761                 ///Boolean - Whether grid lines are shown across the chart
2762                 scaleShowGridLines : true,
2763
2764                 //String - Colour of the grid lines
2765                 scaleGridLineColor : "rgba(0,0,0,.05)",
2766
2767                 //Number - Width of the grid lines
2768                 scaleGridLineWidth : 1,
2769
2770                 //Boolean - Whether to show horizontal lines (except X axis)
2771                 scaleShowHorizontalLines: true,
2772
2773                 //Boolean - Whether to show vertical lines (except Y axis)
2774                 scaleShowVerticalLines: true,
2775
2776                 //Boolean - Whether the line is curved between points
2777                 bezierCurve : true,
2778
2779                 //Number - Tension of the bezier curve between points
2780                 bezierCurveTension : 0.4,
2781
2782                 //Boolean - Whether to show a dot for each point
2783                 pointDot : true,
2784
2785                 //Number - Radius of each point dot in pixels
2786                 pointDotRadius : 4,
2787
2788                 //Number - Pixel width of point dot stroke
2789                 pointDotStrokeWidth : 1,
2790
2791                 //Number - amount extra to add to the radius to cater for hit detection outside the drawn point
2792                 pointHitDetectionRadius : 20,
2793
2794                 //Boolean - Whether to show a stroke for datasets
2795                 datasetStroke : true,
2796
2797                 //Number - Pixel width of dataset stroke
2798                 datasetStrokeWidth : 2,
2799
2800                 //Boolean - Whether to fill the dataset with a colour
2801                 datasetFill : true,
2802
2803                 //String - A legend template
2804                 legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span class=\"<%=name.toLowerCase()%>-legend-icon\" style=\"background-color:<%=datasets[i].strokeColor%>\"></span><span class=\"<%=name.toLowerCase()%>-legend-text\"><%if(datasets[i].label){%><%=datasets[i].label%><%}%></span></li><%}%></ul>",
2805
2806                 //Boolean - Whether to horizontally center the label and point dot inside the grid
2807                 offsetGridLines : false
2808
2809         };
2810
2811
2812         Chart.Type.extend({
2813                 name: "Line",
2814                 defaults : defaultConfig,
2815                 initialize:  function(data){
2816                         //Declare the extension of the default point, to cater for the options passed in to the constructor
2817                         this.PointClass = Chart.Point.extend({
2818                                 offsetGridLines : this.options.offsetGridLines,
2819                                 strokeWidth : this.options.pointDotStrokeWidth,
2820                                 radius : this.options.pointDotRadius,
2821                                 display: this.options.pointDot,
2822                                 hitDetectionRadius : this.options.pointHitDetectionRadius,
2823                                 ctx : this.chart.ctx,
2824                                 inRange : function(mouseX){
2825                                         return (Math.pow(mouseX-this.x, 2) < Math.pow(this.radius + this.hitDetectionRadius,2));
2826                                 }
2827                         });
2828
2829                         this.datasets = [];
2830
2831                         //Set up tooltip events on the chart
2832                         if (this.options.showTooltips){
2833                                 helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
2834                                         var activePoints = (evt.type !== 'mouseout') ? this.getPointsAtEvent(evt) : [];
2835                                         this.eachPoints(function(point){
2836                                                 point.restore(['fillColor', 'strokeColor']);
2837                                         });
2838                                         helpers.each(activePoints, function(activePoint){
2839                                                 activePoint.fillColor = activePoint.highlightFill;
2840                                                 activePoint.strokeColor = activePoint.highlightStroke;
2841                                         });
2842                                         this.showTooltip(activePoints);
2843                                 });
2844                         }
2845
2846                         //Iterate through each of the datasets, and build this into a property of the chart
2847                         helpers.each(data.datasets,function(dataset){
2848
2849                                 var datasetObject = {
2850                                         label : dataset.label || null,
2851                                         fillColor : dataset.fillColor,
2852                                         strokeColor : dataset.strokeColor,
2853                                         pointColor : dataset.pointColor,
2854                                         pointStrokeColor : dataset.pointStrokeColor,
2855                                         points : []
2856                                 };
2857
2858                                 this.datasets.push(datasetObject);
2859
2860
2861                                 helpers.each(dataset.data,function(dataPoint,index){
2862                                         //Add a new point for each piece of data, passing any required data to draw.
2863                                         datasetObject.points.push(new this.PointClass({
2864                                                 value : dataPoint,
2865                                                 label : data.labels[index],
2866                                                 datasetLabel: dataset.label,
2867                                                 strokeColor : dataset.pointStrokeColor,
2868                                                 fillColor : dataset.pointColor,
2869                                                 highlightFill : dataset.pointHighlightFill || dataset.pointColor,
2870                                                 highlightStroke : dataset.pointHighlightStroke || dataset.pointStrokeColor
2871                                         }));
2872                                 },this);
2873
2874                                 this.buildScale(data.labels);
2875
2876
2877                                 this.eachPoints(function(point, index){
2878                                         helpers.extend(point, {
2879                                                 x: this.scale.calculateX(index),
2880                                                 y: this.scale.endPoint
2881                                         });
2882                                         point.save();
2883                                 }, this);
2884
2885                         },this);
2886
2887
2888                         this.render();
2889                 },
2890                 update : function(){
2891                         this.scale.update();
2892                         // Reset any highlight colours before updating.
2893                         helpers.each(this.activeElements, function(activeElement){
2894                                 activeElement.restore(['fillColor', 'strokeColor']);
2895                         });
2896                         this.eachPoints(function(point){
2897                                 point.save();
2898                         });
2899                         this.render();
2900                 },
2901                 eachPoints : function(callback){
2902                         helpers.each(this.datasets,function(dataset){
2903                                 helpers.each(dataset.points,callback,this);
2904                         },this);
2905                 },
2906                 getPointsAtEvent : function(e){
2907                         var pointsArray = [],
2908                                 eventPosition = helpers.getRelativePosition(e);
2909                         helpers.each(this.datasets,function(dataset){
2910                                 helpers.each(dataset.points,function(point){
2911                                         if (point.inRange(eventPosition.x,eventPosition.y)) pointsArray.push(point);
2912                                 });
2913                         },this);
2914                         return pointsArray;
2915                 },
2916                 buildScale : function(labels){
2917                         var self = this;
2918
2919                         var dataTotal = function(){
2920                                 var values = [];
2921                                 self.eachPoints(function(point){
2922                                         values.push(point.value);
2923                                 });
2924
2925                                 return values;
2926                         };
2927
2928                         var scaleOptions = {
2929                                 templateString : this.options.scaleLabel,
2930                                 height : this.chart.height,
2931                                 width : this.chart.width,
2932                                 ctx : this.chart.ctx,
2933                                 textColor : this.options.scaleFontColor,
2934                                 offsetGridLines : this.options.offsetGridLines,
2935                                 fontSize : this.options.scaleFontSize,
2936                                 fontStyle : this.options.scaleFontStyle,
2937                                 fontFamily : this.options.scaleFontFamily,
2938                                 valuesCount : labels.length,
2939                                 beginAtZero : this.options.scaleBeginAtZero,
2940                                 integersOnly : this.options.scaleIntegersOnly,
2941                                 calculateYRange : function(currentHeight){
2942                                         var updatedRanges = helpers.calculateScaleRange(
2943                                                 dataTotal(),
2944                                                 currentHeight,
2945                                                 this.fontSize,
2946                                                 this.beginAtZero,
2947                                                 this.integersOnly
2948                                         );
2949                                         helpers.extend(this, updatedRanges);
2950                                 },
2951                                 xLabels : labels,
2952                                 font : helpers.fontString(this.options.scaleFontSize, this.options.scaleFontStyle, this.options.scaleFontFamily),
2953                                 lineWidth : this.options.scaleLineWidth,
2954                                 lineColor : this.options.scaleLineColor,
2955                                 showHorizontalLines : this.options.scaleShowHorizontalLines,
2956                                 showVerticalLines : this.options.scaleShowVerticalLines,
2957                                 gridLineWidth : (this.options.scaleShowGridLines) ? this.options.scaleGridLineWidth : 0,
2958                                 gridLineColor : (this.options.scaleShowGridLines) ? this.options.scaleGridLineColor : "rgba(0,0,0,0)",
2959                                 padding: (this.options.showScale) ? 0 : this.options.pointDotRadius + this.options.pointDotStrokeWidth,
2960                                 showLabels : this.options.scaleShowLabels,
2961                                 display : this.options.showScale
2962                         };
2963
2964                         if (this.options.scaleOverride){
2965                                 helpers.extend(scaleOptions, {
2966                                         calculateYRange: helpers.noop,
2967                                         steps: this.options.scaleSteps,
2968                                         stepValue: this.options.scaleStepWidth,
2969                                         min: this.options.scaleStartValue,
2970                                         max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
2971                                 });
2972                         }
2973
2974
2975                         this.scale = new Chart.Scale(scaleOptions);
2976                 },
2977                 addData : function(valuesArray,label){
2978                         //Map the values array for each of the datasets
2979
2980                         helpers.each(valuesArray,function(value,datasetIndex){
2981                                 //Add a new point for each piece of data, passing any required data to draw.
2982                                 this.datasets[datasetIndex].points.push(new this.PointClass({
2983                                         value : value,
2984                                         label : label,
2985                                         datasetLabel: this.datasets[datasetIndex].label,
2986                                         x: this.scale.calculateX(this.scale.valuesCount+1),
2987                                         y: this.scale.endPoint,
2988                                         strokeColor : this.datasets[datasetIndex].pointStrokeColor,
2989                                         fillColor : this.datasets[datasetIndex].pointColor
2990                                 }));
2991                         },this);
2992
2993                         this.scale.addXLabel(label);
2994                         //Then re-render the chart.
2995                         this.update();
2996                 },
2997                 removeData : function(){
2998                         this.scale.removeXLabel();
2999                         //Then re-render the chart.
3000                         helpers.each(this.datasets,function(dataset){
3001                                 dataset.points.shift();
3002                         },this);
3003                         this.update();
3004                 },
3005                 reflow : function(){
3006                         var newScaleProps = helpers.extend({
3007                                 height : this.chart.height,
3008                                 width : this.chart.width
3009                         });
3010                         this.scale.update(newScaleProps);
3011                 },
3012                 draw : function(ease){
3013                         var easingDecimal = ease || 1;
3014                         this.clear();
3015
3016                         var ctx = this.chart.ctx;
3017
3018                         // Some helper methods for getting the next/prev points
3019                         var hasValue = function(item){
3020                                 return item.value !== null;
3021                         },
3022                         nextPoint = function(point, collection, index){
3023                                 return helpers.findNextWhere(collection, hasValue, index) || point;
3024                         },
3025                         previousPoint = function(point, collection, index){
3026                                 return helpers.findPreviousWhere(collection, hasValue, index) || point;
3027                         };
3028
3029                         if (!this.scale) return;
3030                         this.scale.draw(easingDecimal);
3031
3032
3033                         helpers.each(this.datasets,function(dataset){
3034                                 var pointsWithValues = helpers.where(dataset.points, hasValue);
3035
3036                                 //Transition each point first so that the line and point drawing isn't out of sync
3037                                 //We can use this extra loop to calculate the control points of this dataset also in this loop
3038
3039                                 helpers.each(dataset.points, function(point, index){
3040                                         if (point.hasValue()){
3041                                                 point.transition({
3042                                                         y : this.scale.calculateY(point.value),
3043                                                         x : this.scale.calculateX(index)
3044                                                 }, easingDecimal);
3045                                         }
3046                                 },this);
3047
3048
3049                                 // Control points need to be calculated in a separate loop, because we need to know the current x/y of the point
3050                                 // This would cause issues when there is no animation, because the y of the next point would be 0, so beziers would be skewed
3051                                 if (this.options.bezierCurve){
3052                                         helpers.each(pointsWithValues, function(point, index){
3053                                                 var tension = (index > 0 && index < pointsWithValues.length - 1) ? this.options.bezierCurveTension : 0;
3054                                                 point.controlPoints = helpers.splineCurve(
3055                                                         previousPoint(point, pointsWithValues, index),
3056                                                         point,
3057                                                         nextPoint(point, pointsWithValues, index),
3058                                                         tension
3059                                                 );
3060
3061                                                 // Prevent the bezier going outside of the bounds of the graph
3062
3063                                                 // Cap puter bezier handles to the upper/lower scale bounds
3064                                                 if (point.controlPoints.outer.y > this.scale.endPoint){
3065                                                         point.controlPoints.outer.y = this.scale.endPoint;
3066                                                 }
3067                                                 else if (point.controlPoints.outer.y < this.scale.startPoint){
3068                                                         point.controlPoints.outer.y = this.scale.startPoint;
3069                                                 }
3070
3071                                                 // Cap inner bezier handles to the upper/lower scale bounds
3072                                                 if (point.controlPoints.inner.y > this.scale.endPoint){
3073                                                         point.controlPoints.inner.y = this.scale.endPoint;
3074                                                 }
3075                                                 else if (point.controlPoints.inner.y < this.scale.startPoint){
3076                                                         point.controlPoints.inner.y = this.scale.startPoint;
3077                                                 }
3078                                         },this);
3079                                 }
3080
3081
3082                                 //Draw the line between all the points
3083                                 ctx.lineWidth = this.options.datasetStrokeWidth;
3084                                 ctx.strokeStyle = dataset.strokeColor;
3085                                 ctx.beginPath();
3086
3087                                 helpers.each(pointsWithValues, function(point, index){
3088                                         if (index === 0){
3089                                                 ctx.moveTo(point.x, point.y);
3090                                         }
3091                                         else{
3092                                                 if(this.options.bezierCurve){
3093                                                         var previous = previousPoint(point, pointsWithValues, index);
3094
3095                                                         ctx.bezierCurveTo(
3096                                                                 previous.controlPoints.outer.x,
3097                                                                 previous.controlPoints.outer.y,
3098                                                                 point.controlPoints.inner.x,
3099                                                                 point.controlPoints.inner.y,
3100                                                                 point.x,
3101                                                                 point.y
3102                                                         );
3103                                                 }
3104                                                 else{
3105                                                         ctx.lineTo(point.x,point.y);
3106                                                 }
3107                                         }
3108                                 }, this);
3109
3110                                 if (this.options.datasetStroke) {
3111                                         ctx.stroke();
3112                                 }
3113
3114                                 if (this.options.datasetFill && pointsWithValues.length > 0){
3115                                         //Round off the line by going to the base of the chart, back to the start, then fill.
3116                                         ctx.lineTo(pointsWithValues[pointsWithValues.length - 1].x, this.scale.endPoint);
3117                                         ctx.lineTo(pointsWithValues[0].x, this.scale.endPoint);
3118                                         ctx.fillStyle = dataset.fillColor;
3119                                         ctx.closePath();
3120                                         ctx.fill();
3121                                 }
3122
3123                                 //Now draw the points over the line
3124                                 //A little inefficient double looping, but better than the line
3125                                 //lagging behind the point positions
3126                                 helpers.each(pointsWithValues,function(point){
3127                                         point.draw();
3128                                 });
3129                         },this);
3130                 }
3131         });
3132
3133
3134 }).call(this);
3135
3136 (function(){
3137         "use strict";
3138
3139         var root = this,
3140                 Chart = root.Chart,
3141                 //Cache a local reference to Chart.helpers
3142                 helpers = Chart.helpers;
3143
3144         var defaultConfig = {
3145                 //Boolean - Show a backdrop to the scale label
3146                 scaleShowLabelBackdrop : true,
3147
3148                 //String - The colour of the label backdrop
3149                 scaleBackdropColor : "rgba(255,255,255,0.75)",
3150
3151                 // Boolean - Whether the scale should begin at zero
3152                 scaleBeginAtZero : true,
3153
3154                 //Number - The backdrop padding above & below the label in pixels
3155                 scaleBackdropPaddingY : 2,
3156
3157                 //Number - The backdrop padding to the side of the label in pixels
3158                 scaleBackdropPaddingX : 2,
3159
3160                 //Boolean - Show line for each value in the scale
3161                 scaleShowLine : true,
3162
3163                 //Boolean - Stroke a line around each segment in the chart
3164                 segmentShowStroke : true,
3165
3166                 //String - The colour of the stroke on each segment.
3167                 segmentStrokeColor : "#fff",
3168
3169                 //Number - The width of the stroke value in pixels
3170                 segmentStrokeWidth : 2,
3171
3172                 //Number - Amount of animation steps
3173                 animationSteps : 100,
3174
3175                 //String - Animation easing effect.
3176                 animationEasing : "easeOutBounce",
3177
3178                 //Boolean - Whether to animate the rotation of the chart
3179                 animateRotate : true,
3180
3181                 //Boolean - Whether to animate scaling the chart from the centre
3182                 animateScale : false,
3183
3184                 //String - A legend template
3185                 legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span class=\"<%=name.toLowerCase()%>-legend-icon\" style=\"background-color:<%=segments[i].fillColor%>\"></span><span class=\"<%=name.toLowerCase()%>-legend-text\"><%if(segments[i].label){%><%=segments[i].label%><%}%></span></li><%}%></ul>"
3186         };
3187
3188
3189         Chart.Type.extend({
3190                 //Passing in a name registers this chart in the Chart namespace
3191                 name: "PolarArea",
3192                 //Providing a defaults will also register the defaults in the chart namespace
3193                 defaults : defaultConfig,
3194                 //Initialize is fired when the chart is initialized - Data is passed in as a parameter
3195                 //Config is automatically merged by the core of Chart.js, and is available at this.options
3196                 initialize:  function(data){
3197                         this.segments = [];
3198                         //Declare segment class as a chart instance specific class, so it can share props for this instance
3199                         this.SegmentArc = Chart.Arc.extend({
3200                                 showStroke : this.options.segmentShowStroke,
3201                                 strokeWidth : this.options.segmentStrokeWidth,
3202                                 strokeColor : this.options.segmentStrokeColor,
3203                                 ctx : this.chart.ctx,
3204                                 innerRadius : 0,
3205                                 x : this.chart.width/2,
3206                                 y : this.chart.height/2
3207                         });
3208                         this.scale = new Chart.RadialScale({
3209                                 display: this.options.showScale,
3210                                 fontStyle: this.options.scaleFontStyle,
3211                                 fontSize: this.options.scaleFontSize,
3212                                 fontFamily: this.options.scaleFontFamily,
3213                                 fontColor: this.options.scaleFontColor,
3214                                 showLabels: this.options.scaleShowLabels,
3215                                 showLabelBackdrop: this.options.scaleShowLabelBackdrop,
3216                                 backdropColor: this.options.scaleBackdropColor,
3217                                 backdropPaddingY : this.options.scaleBackdropPaddingY,
3218                                 backdropPaddingX: this.options.scaleBackdropPaddingX,
3219                                 lineWidth: (this.options.scaleShowLine) ? this.options.scaleLineWidth : 0,
3220                                 lineColor: this.options.scaleLineColor,
3221                                 lineArc: true,
3222                                 width: this.chart.width,
3223                                 height: this.chart.height,
3224                                 xCenter: this.chart.width/2,
3225                                 yCenter: this.chart.height/2,
3226                                 ctx : this.chart.ctx,
3227                                 templateString: this.options.scaleLabel,
3228                                 valuesCount: data.length
3229                         });
3230
3231                         this.updateScaleRange(data);
3232
3233                         this.scale.update();
3234
3235                         helpers.each(data,function(segment,index){
3236                                 this.addData(segment,index,true);
3237                         },this);
3238
3239                         //Set up tooltip events on the chart
3240                         if (this.options.showTooltips){
3241                                 helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
3242                                         var activeSegments = (evt.type !== 'mouseout') ? this.getSegmentsAtEvent(evt) : [];
3243                                         helpers.each(this.segments,function(segment){
3244                                                 segment.restore(["fillColor"]);
3245                                         });
3246                                         helpers.each(activeSegments,function(activeSegment){
3247                                                 activeSegment.fillColor = activeSegment.highlightColor;
3248                                         });
3249                                         this.showTooltip(activeSegments);
3250                                 });
3251                         }
3252
3253                         this.render();
3254                 },
3255                 getSegmentsAtEvent : function(e){
3256                         var segmentsArray = [];
3257
3258                         var location = helpers.getRelativePosition(e);
3259
3260                         helpers.each(this.segments,function(segment){
3261                                 if (segment.inRange(location.x,location.y)) segmentsArray.push(segment);
3262                         },this);
3263                         return segmentsArray;
3264                 },
3265                 addData : function(segment, atIndex, silent){
3266                         var index = atIndex || this.segments.length;
3267
3268                         this.segments.splice(index, 0, new this.SegmentArc({
3269                                 fillColor: segment.color,
3270                                 highlightColor: segment.highlight || segment.color,
3271                                 label: segment.label,
3272                                 value: segment.value,
3273                                 outerRadius: (this.options.animateScale) ? 0 : this.scale.calculateCenterOffset(segment.value),
3274                                 circumference: (this.options.animateRotate) ? 0 : this.scale.getCircumference(),
3275                                 startAngle: Math.PI * 1.5
3276                         }));
3277                         if (!silent){
3278                                 this.reflow();
3279                                 this.update();
3280                         }
3281                 },
3282                 removeData: function(atIndex){
3283                         var indexToDelete = (helpers.isNumber(atIndex)) ? atIndex : this.segments.length-1;
3284                         this.segments.splice(indexToDelete, 1);
3285                         this.reflow();
3286                         this.update();
3287                 },
3288                 calculateTotal: function(data){
3289                         this.total = 0;
3290                         helpers.each(data,function(segment){
3291                                 this.total += segment.value;
3292                         },this);
3293                         this.scale.valuesCount = this.segments.length;
3294                 },
3295                 updateScaleRange: function(datapoints){
3296                         var valuesArray = [];
3297                         helpers.each(datapoints,function(segment){
3298                                 valuesArray.push(segment.value);
3299                         });
3300
3301                         var scaleSizes = (this.options.scaleOverride) ?
3302                                 {
3303                                         steps: this.options.scaleSteps,
3304                                         stepValue: this.options.scaleStepWidth,
3305                                         min: this.options.scaleStartValue,
3306                                         max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
3307                                 } :
3308                                 helpers.calculateScaleRange(
3309                                         valuesArray,
3310                                         helpers.min([this.chart.width, this.chart.height])/2,
3311                                         this.options.scaleFontSize,
3312                                         this.options.scaleBeginAtZero,
3313                                         this.options.scaleIntegersOnly
3314                                 );
3315
3316                         helpers.extend(
3317                                 this.scale,
3318                                 scaleSizes,
3319                                 {
3320                                         size: helpers.min([this.chart.width, this.chart.height]),
3321                                         xCenter: this.chart.width/2,
3322                                         yCenter: this.chart.height/2
3323                                 }
3324                         );
3325
3326                 },
3327                 update : function(){
3328                         this.calculateTotal(this.segments);
3329
3330                         helpers.each(this.segments,function(segment){
3331                                 segment.save();
3332                         });
3333
3334                         this.reflow();
3335                         this.render();
3336                 },
3337                 reflow : function(){
3338                         helpers.extend(this.SegmentArc.prototype,{
3339                                 x : this.chart.width/2,
3340                                 y : this.chart.height/2
3341                         });
3342                         this.updateScaleRange(this.segments);
3343                         this.scale.update();
3344
3345                         helpers.extend(this.scale,{
3346                                 xCenter: this.chart.width/2,
3347                                 yCenter: this.chart.height/2
3348                         });
3349
3350                         helpers.each(this.segments, function(segment){
3351                                 segment.update({
3352                                         outerRadius : this.scale.calculateCenterOffset(segment.value)
3353                                 });
3354                         }, this);
3355
3356                 },
3357                 draw : function(ease){
3358                         var easingDecimal = ease || 1;
3359                         //Clear & draw the canvas
3360                         this.clear();
3361                         helpers.each(this.segments,function(segment, index){
3362                                 segment.transition({
3363                                         circumference : this.scale.getCircumference(),
3364                                         outerRadius : this.scale.calculateCenterOffset(segment.value)
3365                                 },easingDecimal);
3366
3367                                 segment.endAngle = segment.startAngle + segment.circumference;
3368
3369                                 // If we've removed the first segment we need to set the first one to
3370                                 // start at the top.
3371                                 if (index === 0){
3372                                         segment.startAngle = Math.PI * 1.5;
3373                                 }
3374
3375                                 //Check to see if it's the last segment, if not get the next and update the start angle
3376                                 if (index < this.segments.length - 1){
3377                                         this.segments[index+1].startAngle = segment.endAngle;
3378                                 }
3379                                 segment.draw();
3380                         }, this);
3381                         this.scale.draw();
3382                 }
3383         });
3384
3385 }).call(this);
3386
3387 (function(){
3388         "use strict";
3389
3390         var root = this,
3391                 Chart = root.Chart,
3392                 helpers = Chart.helpers;
3393
3394
3395
3396         Chart.Type.extend({
3397                 name: "Radar",
3398                 defaults:{
3399                         //Boolean - Whether to show lines for each scale point
3400                         scaleShowLine : true,
3401
3402                         //Boolean - Whether we show the angle lines out of the radar
3403                         angleShowLineOut : true,
3404
3405                         //Boolean - Whether to show labels on the scale
3406                         scaleShowLabels : false,
3407
3408                         // Boolean - Whether the scale should begin at zero
3409                         scaleBeginAtZero : true,
3410
3411                         //String - Colour of the angle line
3412                         angleLineColor : "rgba(0,0,0,.1)",
3413
3414                         //Number - Pixel width of the angle line
3415                         angleLineWidth : 1,
3416
3417                         //Number - Interval at which to draw angle lines ("every Nth point")
3418                         angleLineInterval: 1,
3419
3420                         //String - Point label font declaration
3421                         pointLabelFontFamily : "'Arial'",
3422
3423                         //String - Point label font weight
3424                         pointLabelFontStyle : "normal",
3425
3426                         //Number - Point label font size in pixels
3427                         pointLabelFontSize : 10,
3428
3429                         //String - Point label font colour
3430                         pointLabelFontColor : "#666",
3431
3432                         //Boolean - Whether to show a dot for each point
3433                         pointDot : true,
3434
3435                         //Number - Radius of each point dot in pixels
3436                         pointDotRadius : 3,
3437
3438                         //Number - Pixel width of point dot stroke
3439                         pointDotStrokeWidth : 1,
3440
3441                         //Number - amount extra to add to the radius to cater for hit detection outside the drawn point
3442                         pointHitDetectionRadius : 20,
3443
3444                         //Boolean - Whether to show a stroke for datasets
3445                         datasetStroke : true,
3446
3447                         //Number - Pixel width of dataset stroke
3448                         datasetStrokeWidth : 2,
3449
3450                         //Boolean - Whether to fill the dataset with a colour
3451                         datasetFill : true,
3452
3453                         //String - A legend template
3454                         legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<datasets.length; i++){%><li><span class=\"<%=name.toLowerCase()%>-legend-icon\" style=\"background-color:<%=datasets[i].strokeColor%>\"></span><span class=\"<%=name.toLowerCase()%>-legend-text\"><%if(datasets[i].label){%><%=datasets[i].label%><%}%></span></li><%}%></ul>"
3455
3456                 },
3457
3458                 initialize: function(data){
3459                         this.PointClass = Chart.Point.extend({
3460                                 strokeWidth : this.options.pointDotStrokeWidth,
3461                                 radius : this.options.pointDotRadius,
3462                                 display: this.options.pointDot,
3463                                 hitDetectionRadius : this.options.pointHitDetectionRadius,
3464                                 ctx : this.chart.ctx
3465                         });
3466
3467                         this.datasets = [];
3468
3469                         this.buildScale(data);
3470
3471                         //Set up tooltip events on the chart
3472                         if (this.options.showTooltips){
3473                                 helpers.bindEvents(this, this.options.tooltipEvents, function(evt){
3474                                         var activePointsCollection = (evt.type !== 'mouseout') ? this.getPointsAtEvent(evt) : [];
3475
3476                                         this.eachPoints(function(point){
3477                                                 point.restore(['fillColor', 'strokeColor']);
3478                                         });
3479                                         helpers.each(activePointsCollection, function(activePoint){
3480                                                 activePoint.fillColor = activePoint.highlightFill;
3481                                                 activePoint.strokeColor = activePoint.highlightStroke;
3482                                         });
3483
3484                                         this.showTooltip(activePointsCollection);
3485                                 });
3486                         }
3487
3488                         //Iterate through each of the datasets, and build this into a property of the chart
3489                         helpers.each(data.datasets,function(dataset){
3490
3491                                 var datasetObject = {
3492                                         label: dataset.label || null,
3493                                         fillColor : dataset.fillColor,
3494                                         strokeColor : dataset.strokeColor,
3495                                         pointColor : dataset.pointColor,
3496                                         pointStrokeColor : dataset.pointStrokeColor,
3497                                         points : []
3498                                 };
3499
3500                                 this.datasets.push(datasetObject);
3501
3502                                 helpers.each(dataset.data,function(dataPoint,index){
3503                                         //Add a new point for each piece of data, passing any required data to draw.
3504                                         var pointPosition;
3505                                         if (!this.scale.animation){
3506                                                 pointPosition = this.scale.getPointPosition(index, this.scale.calculateCenterOffset(dataPoint));
3507                                         }
3508                                         datasetObject.points.push(new this.PointClass({
3509                                                 value : dataPoint,
3510                                                 label : data.labels[index],
3511                                                 datasetLabel: dataset.label,
3512                                                 x: (this.options.animation) ? this.scale.xCenter : pointPosition.x,
3513                                                 y: (this.options.animation) ? this.scale.yCenter : pointPosition.y,
3514                                                 strokeColor : dataset.pointStrokeColor,
3515                                                 fillColor : dataset.pointColor,
3516                                                 highlightFill : dataset.pointHighlightFill || dataset.pointColor,
3517                                                 highlightStroke : dataset.pointHighlightStroke || dataset.pointStrokeColor
3518                                         }));
3519                                 },this);
3520
3521                         },this);
3522
3523                         this.render();
3524                 },
3525                 eachPoints : function(callback){
3526                         helpers.each(this.datasets,function(dataset){
3527                                 helpers.each(dataset.points,callback,this);
3528                         },this);
3529                 },
3530
3531                 getPointsAtEvent : function(evt){
3532                         var mousePosition = helpers.getRelativePosition(evt),
3533                                 fromCenter = helpers.getAngleFromPoint({
3534                                         x: this.scale.xCenter,
3535                                         y: this.scale.yCenter
3536                                 }, mousePosition);
3537
3538                         var anglePerIndex = (Math.PI * 2) /this.scale.valuesCount,
3539                                 pointIndex = Math.round((fromCenter.angle - Math.PI * 1.5) / anglePerIndex),
3540                                 activePointsCollection = [];
3541
3542                         // If we're at the top, make the pointIndex 0 to get the first of the array.
3543                         if (pointIndex >= this.scale.valuesCount || pointIndex < 0){
3544                                 pointIndex = 0;
3545                         }
3546
3547                         if (fromCenter.distance <= this.scale.drawingArea){
3548                                 helpers.each(this.datasets, function(dataset){
3549                                         activePointsCollection.push(dataset.points[pointIndex]);
3550                                 });
3551                         }
3552
3553                         return activePointsCollection;
3554                 },
3555
3556                 buildScale : function(data){
3557                         this.scale = new Chart.RadialScale({
3558                                 display: this.options.showScale,
3559                                 fontStyle: this.options.scaleFontStyle,
3560                                 fontSize: this.options.scaleFontSize,
3561                                 fontFamily: this.options.scaleFontFamily,
3562                                 fontColor: this.options.scaleFontColor,
3563                                 showLabels: this.options.scaleShowLabels,
3564                                 showLabelBackdrop: this.options.scaleShowLabelBackdrop,
3565                                 backdropColor: this.options.scaleBackdropColor,
3566                                 backgroundColors: this.options.scaleBackgroundColors,
3567                                 backdropPaddingY : this.options.scaleBackdropPaddingY,
3568                                 backdropPaddingX: this.options.scaleBackdropPaddingX,
3569                                 lineWidth: (this.options.scaleShowLine) ? this.options.scaleLineWidth : 0,
3570                                 lineColor: this.options.scaleLineColor,
3571                                 angleLineColor : this.options.angleLineColor,
3572                                 angleLineWidth : (this.options.angleShowLineOut) ? this.options.angleLineWidth : 0,
3573         angleLineInterval: (this.options.angleLineInterval) ? this.options.angleLineInterval : 1,
3574                                 // Point labels at the edge of each line
3575                                 pointLabelFontColor : this.options.pointLabelFontColor,
3576                                 pointLabelFontSize : this.options.pointLabelFontSize,
3577                                 pointLabelFontFamily : this.options.pointLabelFontFamily,
3578                                 pointLabelFontStyle : this.options.pointLabelFontStyle,
3579                                 height : this.chart.height,
3580                                 width: this.chart.width,
3581                                 xCenter: this.chart.width/2,
3582                                 yCenter: this.chart.height/2,
3583                                 ctx : this.chart.ctx,
3584                                 templateString: this.options.scaleLabel,
3585                                 labels: data.labels,
3586                                 valuesCount: data.datasets[0].data.length
3587                         });
3588
3589                         this.scale.setScaleSize();
3590                         this.updateScaleRange(data.datasets);
3591                         this.scale.buildYLabels();
3592                 },
3593                 updateScaleRange: function(datasets){
3594                         var valuesArray = (function(){
3595                                 var totalDataArray = [];
3596                                 helpers.each(datasets,function(dataset){
3597                                         if (dataset.data){
3598                                                 totalDataArray = totalDataArray.concat(dataset.data);
3599                                         }
3600                                         else {
3601                                                 helpers.each(dataset.points, function(point){
3602                                                         totalDataArray.push(point.value);
3603                                                 });
3604                                         }
3605                                 });
3606                                 return totalDataArray;
3607                         })();
3608
3609
3610                         var scaleSizes = (this.options.scaleOverride) ?
3611                                 {
3612                                         steps: this.options.scaleSteps,
3613                                         stepValue: this.options.scaleStepWidth,
3614                                         min: this.options.scaleStartValue,
3615                                         max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth)
3616                                 } :
3617                                 helpers.calculateScaleRange(
3618                                         valuesArray,
3619                                         helpers.min([this.chart.width, this.chart.height])/2,
3620                                         this.options.scaleFontSize,
3621                                         this.options.scaleBeginAtZero,
3622                                         this.options.scaleIntegersOnly
3623                                 );
3624
3625                         helpers.extend(
3626                                 this.scale,
3627                                 scaleSizes
3628                         );
3629
3630                 },
3631                 addData : function(valuesArray,label){
3632                         //Map the values array for each of the datasets
3633                         this.scale.valuesCount++;
3634                         helpers.each(valuesArray,function(value,datasetIndex){
3635                                 var pointPosition = this.scale.getPointPosition(this.scale.valuesCount, this.scale.calculateCenterOffset(value));
3636                                 this.datasets[datasetIndex].points.push(new this.PointClass({
3637                                         value : value,
3638                                         label : label,
3639                                         datasetLabel: this.datasets[datasetIndex].label,
3640                                         x: pointPosition.x,
3641                                         y: pointPosition.y,
3642                                         strokeColor : this.datasets[datasetIndex].pointStrokeColor,
3643                                         fillColor : this.datasets[datasetIndex].pointColor
3644                                 }));
3645                         },this);
3646
3647                         this.scale.labels.push(label);
3648
3649                         this.reflow();
3650
3651                         this.update();
3652                 },
3653                 removeData : function(){
3654                         this.scale.valuesCount--;
3655                         this.scale.labels.shift();
3656                         helpers.each(this.datasets,function(dataset){
3657                                 dataset.points.shift();
3658                         },this);
3659                         this.reflow();
3660                         this.update();
3661                 },
3662                 update : function(){
3663                         this.eachPoints(function(point){
3664                                 point.save();
3665                         });
3666                         this.reflow();
3667                         this.render();
3668                 },
3669                 reflow: function(){
3670                         helpers.extend(this.scale, {
3671                                 width : this.chart.width,
3672                                 height: this.chart.height,
3673                                 size : helpers.min([this.chart.width, this.chart.height]),
3674                                 xCenter: this.chart.width/2,
3675                                 yCenter: this.chart.height/2
3676                         });
3677                         this.updateScaleRange(this.datasets);
3678                         this.scale.setScaleSize();
3679                         this.scale.buildYLabels();
3680                 },
3681                 draw : function(ease){
3682                         var easeDecimal = ease || 1,
3683                                 ctx = this.chart.ctx;
3684                         this.clear();
3685                         this.scale.draw();
3686
3687                         helpers.each(this.datasets,function(dataset){
3688
3689                                 //Transition each point first so that the line and point drawing isn't out of sync
3690                                 helpers.each(dataset.points,function(point,index){
3691                                         if (point.hasValue()){
3692                                                 point.transition(this.scale.getPointPosition(index, this.scale.calculateCenterOffset(point.value)), easeDecimal);
3693                                         }
3694                                 },this);
3695
3696
3697
3698                                 //Draw the line between all the points
3699                                 ctx.lineWidth = this.options.datasetStrokeWidth;
3700                                 ctx.strokeStyle = dataset.strokeColor;
3701                                 ctx.beginPath();
3702                                 helpers.each(dataset.points,function(point,index){
3703                                         if (index === 0){
3704                                                 ctx.moveTo(point.x,point.y);
3705                                         }
3706                                         else{
3707                                                 ctx.lineTo(point.x,point.y);
3708                                         }
3709                                 },this);
3710                                 ctx.closePath();
3711                                 ctx.stroke();
3712
3713                                 ctx.fillStyle = dataset.fillColor;
3714                                 if(this.options.datasetFill){
3715                                         ctx.fill();
3716                                 }
3717                                 //Now draw the points over the line
3718                                 //A little inefficient double looping, but better than the line
3719                                 //lagging behind the point positions
3720                                 helpers.each(dataset.points,function(point){
3721                                         if (point.hasValue()){
3722                                                 point.draw();
3723                                         }
3724                                 });
3725
3726                         },this);
3727
3728                 }
3729
3730         });
3731
3732
3733
3734
3735
3736 }).call(this);