/*! * ZUI: Chart.js - v1.9.2 - 2020-07-09 * http://openzui.com * GitHub: https://github.com/easysoft/zui.git * Copyright (c) 2020 cnezsoft.com; Licensed MIT */ /* ======================================================================== * Chart.js: Chart.Core.js [Version: 1.0.2] * http://chartjs.org/ * * ZUI: The file has been changed in ZUI. It will not keep update with the * official version in the future. * http://openzui.com * ======================================================================== * Copyright 2015 Nick Downie, Released under the MIT license * https://github.com/nnnick/Chart.js/blob/master/LICENSE.md * ======================================================================== */ /*! * Chart.js 1.0.2 * Copyright 2015 Nick Downie * Released under the MIT license * http://chartjs.org/ */ /// ----- ZUI change begin ----- /// Add jquery object to namespace /// (function(){ // Old code (function($) { /// ----- ZUI change end ----- "use strict"; //Declare root variable - window in the browser, global on the server /// ----- ZUI change begin ----- /// Change root to zui shared object /// /// var root = this, // old code var root = $ && $.zui ? $.zui : this, /// ----- ZUI change end ----- previous = root.Chart; //Occupy the global variable of Chart, and create a simple base class var Chart = function(context) { var chart = this; this.canvas = context.canvas; this.ctx = context; //Variables global to the chart var computeDimension = function(element, dimension) { if(element['offset' + dimension]) { return element['offset' + dimension]; } else { return document.defaultView.getComputedStyle(element).getPropertyValue(dimension); } } var width = this.width = computeDimension(context.canvas, 'Width'); var height = this.height = computeDimension(context.canvas, 'Height'); // Firefox requires this to work correctly context.canvas.width = width; context.canvas.height = height; var width = this.width = context.canvas.width; var height = this.height = context.canvas.height; this.aspectRatio = this.width / this.height; //High pixel density displays - multiply the size of the canvas height/width by the device pixel ratio, then scale. helpers.retinaScale(this); return this; }; //Globally expose the defaults to allow for user updating/changing Chart.defaults = { global: { // Boolean - Whether to animate the chart animation: true, // Number - Number of animation steps animationSteps: 60, // String - Animation easing effect // Possible effects are: // [easeInOutQuart, linear, easeOutBounce, easeInBack, easeInOutQuad, // easeOutQuart, easeOutQuad, easeInOutBounce, easeOutSine, easeInOutCubic, // easeInExpo, easeInOutBack, easeInCirc, easeInOutElastic, easeOutBack, // easeInQuad, easeInOutExpo, easeInQuart, easeOutQuint, easeInOutCirc, // easeInSine, easeOutExpo, easeOutCirc, easeOutCubic, easeInQuint, // easeInElastic, easeInOutSine, easeInOutQuint, easeInBounce, // easeOutElastic, easeInCubic] animationEasing: "easeOutQuart", // Boolean - If we should show the scale at all showScale: true, // Boolean - If we want to override with a hard coded scale scaleOverride: false, // ** Required if scaleOverride is true ** // Number - The number of steps in a hard coded scale scaleSteps: null, // Number - The value jump in the hard coded scale scaleStepWidth: null, // Number - The scale starting value scaleStartValue: null, // String - Colour of the scale line scaleLineColor: "rgba(0,0,0,.1)", // Number - Pixel width of the scale line scaleLineWidth: 1, // Boolean - Whether to show labels on the scale scaleShowLabels: true, // Interpolated JS string - can access value scaleLabel: "<%=value%>", // Boolean - Whether the scale should stick to integers, and not show any floats even if drawing space is there scaleIntegersOnly: true, // Boolean - Whether the scale should start at zero, or an order of magnitude down from the lowest value scaleBeginAtZero: false, // String - Scale label font declaration for the scale label scaleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif", // Number - Scale label font size in pixels scaleFontSize: 12, // String - Scale label font weight style scaleFontStyle: "normal", // String - Scale label font colour scaleFontColor: "#666", // Boolean - whether or not the chart should be responsive and resize when the browser does. responsive: false, // Boolean - whether to maintain the starting aspect ratio or not when responsive, if set to false, will take up entire container maintainAspectRatio: true, // Boolean - Determines whether to draw tooltips on the canvas or not - attaches events to touchmove & mousemove showTooltips: true, // Boolean - Determines whether to draw built-in tooltip or call custom tooltip function customTooltips: false, // Array - Array of string names to attach tooltip events tooltipEvents: ["mousemove", "touchstart", "touchmove", "mouseout"], // String - Tooltip background colour tooltipFillColor: "rgba(0,0,0,0.8)", // String - Tooltip label font declaration for the scale label tooltipFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif", // Number - Tooltip label font size in pixels tooltipFontSize: 14, // String - Tooltip font weight style tooltipFontStyle: "normal", // String - Tooltip label font colour tooltipFontColor: "#fff", // String - Tooltip title font declaration for the scale label tooltipTitleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif", // Number - Tooltip title font size in pixels tooltipTitleFontSize: 14, // String - Tooltip title font weight style tooltipTitleFontStyle: "bold", // String - Tooltip title font colour tooltipTitleFontColor: "#fff", // Number - pixel width of padding around tooltip text tooltipYPadding: 6, // Number - pixel width of padding around tooltip text tooltipXPadding: 6, // Number - Size of the caret on the tooltip tooltipCaretSize: 8, // Number - Pixel radius of the tooltip border tooltipCornerRadius: 6, // Number - Pixel offset from point x to tooltip edge tooltipXOffset: 10, // String - Template string for single tooltips tooltipTemplate: "<%if (label){%><%=label%>: <%}%><%= value %>", // String - Template string for single tooltips multiTooltipTemplate: "<%if (datasetLabel){%><%=datasetLabel%>: <%}%><%= value %>", // String - Template string for multiple tooltip title multiTooltipTitleTemplate: '<%= label %>', // String - Colour behind the legend colour block multiTooltipKeyBackground: '#fff', // Function - Will fire on animation progression. onAnimationProgress: function() {}, // Function - Will fire on animation completion. onAnimationComplete: function() {} } }; //Create a dictionary of chart types, to allow for extension of existing types Chart.types = {}; //Global Chart helpers object for utility methods and classes var helpers = Chart.helpers = {}; //-- Basic js utility methods var each = helpers.each = function(loopable, callback, self) { var additionalArgs = Array.prototype.slice.call(arguments, 3); // Check to see if null or undefined firstly. if(loopable) { if(loopable.length === +loopable.length) { var i; for(i = 0; i < loopable.length; i++) { callback.apply(self, [loopable[i], i].concat(additionalArgs)); } } else { for(var item in loopable) { callback.apply(self, [loopable[item], item].concat(additionalArgs)); } } } }, clone = helpers.clone = function(obj) { var objClone = {}; each(obj, function(value, key) { if(obj.hasOwnProperty(key)) objClone[key] = value; }); return objClone; }, extend = helpers.extend = function(base) { each(Array.prototype.slice.call(arguments, 1), function(extensionObject) { each(extensionObject, function(value, key) { if(extensionObject.hasOwnProperty(key)) base[key] = value; }); }); return base; }, merge = helpers.merge = function(base, master) { //Merge properties in left object over to a shallow clone of object right. var args = Array.prototype.slice.call(arguments, 0); args.unshift({}); return extend.apply(null, args); }, indexOf = helpers.indexOf = function(arrayToSearch, item) { if(Array.prototype.indexOf) { return arrayToSearch.indexOf(item); } else { for(var i = 0; i < arrayToSearch.length; i++) { if(arrayToSearch[i] === item) return i; } return -1; } }, where = helpers.where = function(collection, filterCallback) { var filtered = []; helpers.each(collection, function(item) { if(filterCallback(item)) { filtered.push(item); } }); return filtered; }, findNextWhere = helpers.findNextWhere = function(arrayToSearch, filterCallback, startIndex) { // Default to start of the array if(!startIndex) { startIndex = -1; } for(var i = startIndex + 1; i < arrayToSearch.length; i++) { var currentItem = arrayToSearch[i]; if(filterCallback(currentItem)) { return currentItem; } } }, findPreviousWhere = helpers.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) { // Default to end of the array if(!startIndex) { startIndex = arrayToSearch.length; } for(var i = startIndex - 1; i >= 0; i--) { var currentItem = arrayToSearch[i]; if(filterCallback(currentItem)) { return currentItem; } } }, inherits = helpers.inherits = function(extensions) { //Basic javascript inheritance based on the model created in Backbone.js var parent = this; var ChartElement = (extensions && extensions.hasOwnProperty("constructor")) ? extensions.constructor : function() { return parent.apply(this, arguments); }; var Surrogate = function() { this.constructor = ChartElement; }; Surrogate.prototype = parent.prototype; ChartElement.prototype = new Surrogate(); ChartElement.extend = inherits; if(extensions) extend(ChartElement.prototype, extensions); ChartElement.__super__ = parent.prototype; return ChartElement; }, noop = helpers.noop = function() {}, uid = helpers.uid = (function() { var id = 0; return function() { return "chart-" + id++; }; })(), warn = helpers.warn = function(str) { //Method for warning of errors if(window.console && typeof window.console.warn == "function") console.warn(str); }, amd = helpers.amd = (typeof define == 'function' && define.amd), //-- Math methods isNumber = helpers.isNumber = function(n) { return !isNaN(parseFloat(n)) && isFinite(n); }, max = helpers.max = function(array) { return Math.max.apply(Math, array); }, min = helpers.min = function(array) { return Math.min.apply(Math, array); }, cap = helpers.cap = function(valueToCap, maxValue, minValue) { if(isNumber(maxValue)) { if(valueToCap > maxValue) { return maxValue; } } else if(isNumber(minValue)) { if(valueToCap < minValue) { return minValue; } } return valueToCap; }, getDecimalPlaces = helpers.getDecimalPlaces = function(num) { if(num % 1 !== 0 && isNumber(num)) { return num.toString().split(".")[1].length; } else { return 0; } }, toRadians = helpers.radians = function(degrees) { return degrees * (Math.PI / 180); }, // Gets the angle from vertical upright to the point about a centre. getAngleFromPoint = helpers.getAngleFromPoint = function(centrePoint, anglePoint) { var distanceFromXCenter = anglePoint.x - centrePoint.x, distanceFromYCenter = anglePoint.y - centrePoint.y, radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter); var angle = Math.PI * 2 + Math.atan2(distanceFromYCenter, distanceFromXCenter); //If the segment is in the top left quadrant, we need to add another rotation to the angle if(distanceFromXCenter < 0 && distanceFromYCenter < 0) { angle += Math.PI * 2; } return { angle: angle, distance: radialDistanceFromCenter }; }, aliasPixel = helpers.aliasPixel = function(pixelWidth) { return(pixelWidth % 2 === 0) ? 0 : 0.5; }, splineCurve = helpers.splineCurve = function(FirstPoint, MiddlePoint, AfterPoint, t) { //Props to Rob Spencer at scaled innovation for his post on splining between points //http://scaledinnovation.com/analytics/splines/aboutSplines.html var d01 = Math.sqrt(Math.pow(MiddlePoint.x - FirstPoint.x, 2) + Math.pow(MiddlePoint.y - FirstPoint.y, 2)), d12 = Math.sqrt(Math.pow(AfterPoint.x - MiddlePoint.x, 2) + Math.pow(AfterPoint.y - MiddlePoint.y, 2)), fa = t * d01 / (d01 + d12), // scaling factor for triangle Ta fb = t * d12 / (d01 + d12); return { inner: { x: MiddlePoint.x - fa * (AfterPoint.x - FirstPoint.x), y: MiddlePoint.y - fa * (AfterPoint.y - FirstPoint.y) }, outer: { x: MiddlePoint.x + fb * (AfterPoint.x - FirstPoint.x), y: MiddlePoint.y + fb * (AfterPoint.y - FirstPoint.y) } }; }, calculateOrderOfMagnitude = helpers.calculateOrderOfMagnitude = function(val) { return Math.floor(Math.log(val) / Math.LN10); }, calculateScaleRange = helpers.calculateScaleRange = function(valuesArray, drawingSize, textSize, startFromZero, integersOnly) { //Set a minimum step of two - a point at the top of the graph, and a point at the base var minSteps = 2, maxSteps = Math.floor(drawingSize / (textSize * 1.5)), skipFitting = (minSteps >= maxSteps); var maxValue = max(valuesArray), minValue = min(valuesArray); // We need some degree of seperation here to calculate the scales if all the values are the same // Adding/minusing 0.5 will give us a range of 1. if(maxValue === minValue) { maxValue += 0.5; // So we don't end up with a graph with a negative start value if we've said always start from zero if(minValue >= 0.5 && !startFromZero) { minValue -= 0.5; } else { // Make up a whole number above the values maxValue += 0.5; } } var valueRange = Math.abs(maxValue - minValue), rangeOrderOfMagnitude = calculateOrderOfMagnitude(valueRange), graphMax = Math.ceil(maxValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude), graphMin = (startFromZero) ? 0 : Math.floor(minValue / (1 * Math.pow(10, rangeOrderOfMagnitude))) * Math.pow(10, rangeOrderOfMagnitude), graphRange = graphMax - graphMin, stepValue = Math.pow(10, rangeOrderOfMagnitude), numberOfSteps = Math.round(graphRange / stepValue); //If we have more space on the graph we'll use it to give more definition to the data while((numberOfSteps > maxSteps || (numberOfSteps * 2) < maxSteps) && !skipFitting) { if(numberOfSteps > maxSteps) { stepValue *= 2; numberOfSteps = Math.round(graphRange / stepValue); // Don't ever deal with a decimal number of steps - cancel fitting and just use the minimum number of steps. if(numberOfSteps % 1 !== 0) { skipFitting = true; } } //We can fit in double the amount of scale points on the scale else { //If user has declared ints only, and the step value isn't a decimal if(integersOnly && rangeOrderOfMagnitude >= 0) { //If the user has said integers only, we need to check that making the scale more granular wouldn't make it a float if(stepValue / 2 % 1 === 0) { stepValue /= 2; numberOfSteps = Math.round(graphRange / stepValue); } //If it would make it a float break out of the loop else { break; } } //If the scale doesn't have to be an int, make the scale more granular anyway. else { stepValue /= 2; numberOfSteps = Math.round(graphRange / stepValue); } } } if(skipFitting) { numberOfSteps = minSteps; stepValue = graphRange / numberOfSteps; } return { steps: numberOfSteps, stepValue: stepValue, min: graphMin, max: graphMin + (numberOfSteps * stepValue) }; }, /* jshint ignore:start */ // Blows up jshint errors based on the new Function constructor //Templating methods //Javascript micro templating by John Resig - source at http://ejohn.org/blog/javascript-micro-templating/ template = helpers.template = function(templateString, valuesObject) { // If templateString is function rather than string-template - call the function for valuesObject if(templateString instanceof Function) { return templateString(valuesObject); } var cache = {}; function tmpl(str, data) { // Figure out if we're getting a template, or if we need to // load the template - and be sure to cache the result. var fn = !/\W/.test(str) ? cache[str] = cache[str] : // Generate a reusable function that will serve as a template // generator (and which will be cached). new Function("obj", "var p=[],print=function(){p.push.apply(p,arguments);};" + // Introduce the data as local variables using with(){} "with(obj){p.push('" + // Convert the template into pure JavaScript str .replace(/[\r\t\n]/g, " ") .split("<%").join("\t") .replace(/((^|%>)[^\t]*)'/g, "$1\r") .replace(/\t=(.*?)%>/g, "',$1,'") .split("\t").join("');") .split("%>").join("p.push('") .split("\r").join("\\'") + "');}return p.join('');" ); // Provide some basic currying to the user return data ? fn(data) : fn; } return tmpl(templateString, valuesObject); }, /* jshint ignore:end */ generateLabels = helpers.generateLabels = function(templateString, numberOfSteps, graphMin, stepValue) { var labelsArray = new Array(numberOfSteps); if(labelTemplateString) { each(labelsArray, function(val, index) { labelsArray[index] = template(templateString, { value: (graphMin + (stepValue * (index + 1))) }); }); } return labelsArray; }, //--Animation methods //Easing functions adapted from Robert Penner's easing equations //http://www.robertpenner.com/easing/ easingEffects = helpers.easingEffects = { linear: function(t) { return t; }, easeInQuad: function(t) { return t * t; }, easeOutQuad: function(t) { return -1 * t * (t - 2); }, easeInOutQuad: function(t) { if((t /= 1 / 2) < 1) return 1 / 2 * t * t; return -1 / 2 * ((--t) * (t - 2) - 1); }, easeInCubic: function(t) { return t * t * t; }, easeOutCubic: function(t) { return 1 * ((t = t / 1 - 1) * t * t + 1); }, easeInOutCubic: function(t) { if((t /= 1 / 2) < 1) return 1 / 2 * t * t * t; return 1 / 2 * ((t -= 2) * t * t + 2); }, easeInQuart: function(t) { return t * t * t * t; }, easeOutQuart: function(t) { return -1 * ((t = t / 1 - 1) * t * t * t - 1); }, easeInOutQuart: function(t) { if((t /= 1 / 2) < 1) return 1 / 2 * t * t * t * t; return -1 / 2 * ((t -= 2) * t * t * t - 2); }, easeInQuint: function(t) { return 1 * (t /= 1) * t * t * t * t; }, easeOutQuint: function(t) { return 1 * ((t = t / 1 - 1) * t * t * t * t + 1); }, easeInOutQuint: function(t) { if((t /= 1 / 2) < 1) return 1 / 2 * t * t * t * t * t; return 1 / 2 * ((t -= 2) * t * t * t * t + 2); }, easeInSine: function(t) { return -1 * Math.cos(t / 1 * (Math.PI / 2)) + 1; }, easeOutSine: function(t) { return 1 * Math.sin(t / 1 * (Math.PI / 2)); }, easeInOutSine: function(t) { return -1 / 2 * (Math.cos(Math.PI * t / 1) - 1); }, easeInExpo: function(t) { return(t === 0) ? 1 : 1 * Math.pow(2, 10 * (t / 1 - 1)); }, easeOutExpo: function(t) { return(t === 1) ? 1 : 1 * (-Math.pow(2, -10 * t / 1) + 1); }, easeInOutExpo: function(t) { if(t === 0) return 0; if(t === 1) return 1; if((t /= 1 / 2) < 1) return 1 / 2 * Math.pow(2, 10 * (t - 1)); return 1 / 2 * (-Math.pow(2, -10 * --t) + 2); }, easeInCirc: function(t) { if(t >= 1) return t; return -1 * (Math.sqrt(1 - (t /= 1) * t) - 1); }, easeOutCirc: function(t) { return 1 * Math.sqrt(1 - (t = t / 1 - 1) * t); }, easeInOutCirc: function(t) { if((t /= 1 / 2) < 1) return -1 / 2 * (Math.sqrt(1 - t * t) - 1); return 1 / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1); }, easeInElastic: function(t) { var s = 1.70158; var p = 0; var a = 1; if(t === 0) return 0; if((t /= 1) == 1) return 1; if(!p) p = 1 * 0.3; if(a < Math.abs(1)) { a = 1; s = p / 4; } else s = p / (2 * Math.PI) * Math.asin(1 / a); return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p)); }, easeOutElastic: function(t) { var s = 1.70158; var p = 0; var a = 1; if(t === 0) return 0; if((t /= 1) == 1) return 1; if(!p) p = 1 * 0.3; if(a < Math.abs(1)) { a = 1; s = p / 4; } else s = p / (2 * Math.PI) * Math.asin(1 / a); return a * Math.pow(2, -10 * t) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) + 1; }, easeInOutElastic: function(t) { var s = 1.70158; var p = 0; var a = 1; if(t === 0) return 0; if((t /= 1 / 2) == 2) return 1; if(!p) p = 1 * (0.3 * 1.5); if(a < Math.abs(1)) { a = 1; s = p / 4; } else s = p / (2 * Math.PI) * Math.asin(1 / a); if(t < 1) return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p)); return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) * 0.5 + 1; }, easeInBack: function(t) { var s = 1.70158; return 1 * (t /= 1) * t * ((s + 1) * t - s); }, easeOutBack: function(t) { var s = 1.70158; return 1 * ((t = t / 1 - 1) * t * ((s + 1) * t + s) + 1); }, easeInOutBack: function(t) { var s = 1.70158; if((t /= 1 / 2) < 1) return 1 / 2 * (t * t * (((s *= (1.525)) + 1) * t - s)); return 1 / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2); }, easeInBounce: function(t) { return 1 - easingEffects.easeOutBounce(1 - t); }, easeOutBounce: function(t) { if((t /= 1) < (1 / 2.75)) { return 1 * (7.5625 * t * t); } else if(t < (2 / 2.75)) { return 1 * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75); } else if(t < (2.5 / 2.75)) { return 1 * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375); } else { return 1 * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375); } }, easeInOutBounce: function(t) { if(t < 1 / 2) return easingEffects.easeInBounce(t * 2) * 0.5; return easingEffects.easeOutBounce(t * 2 - 1) * 0.5 + 1 * 0.5; } }, //Request animation polyfill - http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/ requestAnimFrame = helpers.requestAnimFrame = (function() { return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame || function(callback) { return window.setTimeout(callback, 1000 / 60); }; })(), cancelAnimFrame = helpers.cancelAnimFrame = (function() { return window.cancelAnimationFrame || window.webkitCancelAnimationFrame || window.mozCancelAnimationFrame || window.oCancelAnimationFrame || window.msCancelAnimationFrame || function(callback) { return window.clearTimeout(callback, 1000 / 60); }; })(), animationLoop = helpers.animationLoop = function(callback, totalSteps, easingString, onProgress, onComplete, chartInstance) { var currentStep = 0, easingFunction = easingEffects[easingString] || easingEffects.linear; var animationFrame = function() { currentStep++; var stepDecimal = currentStep / totalSteps; var easeDecimal = easingFunction(stepDecimal); callback.call(chartInstance, easeDecimal, stepDecimal, currentStep); onProgress.call(chartInstance, easeDecimal, stepDecimal); if(currentStep < totalSteps) { chartInstance.animationFrame = requestAnimFrame(animationFrame); } else { onComplete.apply(chartInstance); } }; requestAnimFrame(animationFrame); }, //-- DOM methods getRelativePosition = helpers.getRelativePosition = function(evt) { var mouseX, mouseY; var e = evt.originalEvent || evt, canvas = evt.currentTarget || evt.srcElement, boundingRect = canvas.getBoundingClientRect(); if(e.touches) { mouseX = e.touches[0].clientX - boundingRect.left; mouseY = e.touches[0].clientY - boundingRect.top; } else { mouseX = e.clientX - boundingRect.left; mouseY = e.clientY - boundingRect.top; } return { x: mouseX, y: mouseY }; }, addEvent = helpers.addEvent = function(node, eventType, method) { if(node.addEventListener) { node.addEventListener(eventType, method); } else if(node.attachEvent) { node.attachEvent("on" + eventType, method); } else { node["on" + eventType] = method; } }, removeEvent = helpers.removeEvent = function(node, eventType, handler) { if(node.removeEventListener) { node.removeEventListener(eventType, handler, false); } else if(node.detachEvent) { node.detachEvent("on" + eventType, handler); } else { node["on" + eventType] = noop; } }, bindEvents = helpers.bindEvents = function(chartInstance, arrayOfEvents, handler) { // Create the events object if it's not already present if(!chartInstance.events) chartInstance.events = {}; each(arrayOfEvents, function(eventName) { chartInstance.events[eventName] = function() { handler.apply(chartInstance, arguments); }; addEvent(chartInstance.chart.canvas, eventName, chartInstance.events[eventName]); }); }, unbindEvents = helpers.unbindEvents = function(chartInstance, arrayOfEvents) { each(arrayOfEvents, function(handler, eventName) { removeEvent(chartInstance.chart.canvas, eventName, handler); }); }, getMaximumWidth = helpers.getMaximumWidth = function(domNode) { var container = domNode.parentNode; // TODO = check cross browser stuff with this. return container.clientWidth; }, getMaximumHeight = helpers.getMaximumHeight = function(domNode) { var container = domNode.parentNode; // TODO = check cross browser stuff with this. return container.clientHeight; }, getMaximumSize = helpers.getMaximumSize = helpers.getMaximumWidth, // legacy support retinaScale = helpers.retinaScale = function(chart) { var ctx = chart.ctx, width = chart.canvas.width, height = chart.canvas.height; if(window.devicePixelRatio) { ctx.canvas.style.width = width + "px"; ctx.canvas.style.height = height + "px"; ctx.canvas.height = height * window.devicePixelRatio; ctx.canvas.width = width * window.devicePixelRatio; ctx.scale(window.devicePixelRatio, window.devicePixelRatio); } }, //-- Canvas methods clear = helpers.clear = function(chart) { chart.ctx.clearRect(0, 0, chart.width, chart.height); }, fontString = helpers.fontString = function(pixelSize, fontStyle, fontFamily) { return fontStyle + " " + pixelSize + "px " + fontFamily; }, longestText = helpers.longestText = function(ctx, font, arrayOfStrings) { ctx.font = font; var longest = 0; each(arrayOfStrings, function(string) { var textWidth = ctx.measureText(string).width; longest = (textWidth > longest) ? textWidth : longest; }); return longest; }, drawRoundedRectangle = helpers.drawRoundedRectangle = function(ctx, x, y, width, height, radius) { ctx.beginPath(); ctx.moveTo(x + radius, y); ctx.lineTo(x + width - radius, y); ctx.quadraticCurveTo(x + width, y, x + width, y + radius); ctx.lineTo(x + width, y + height - radius); ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height); ctx.lineTo(x + radius, y + height); ctx.quadraticCurveTo(x, y + height, x, y + height - radius); ctx.lineTo(x, y + radius); ctx.quadraticCurveTo(x, y, x + radius, y); ctx.closePath(); }; //Store a reference to each instance - allowing us to globally resize chart instances on window resize. //Destroy method on the chart will remove the instance of the chart from this reference. Chart.instances = {}; Chart.Type = function(data, options, chart) { this.options = options; this.chart = chart; this.id = uid(); //Add the chart instance to the global namespace Chart.instances[this.id] = this; // Initialize is always called when a chart type is created // By default it is a no op, but it should be extended if(options.responsive) { this.resize(); } this.initialize.call(this, data); }; //Core methods that'll be a part of every chart type extend(Chart.Type.prototype, { initialize: function() { return this; }, clear: function() { clear(this.chart); return this; }, stop: function() { // Stops any current animation loop occuring cancelAnimFrame(this.animationFrame); return this; }, resize: function(callback) { this.stop(); var canvas = this.chart.canvas, newWidth = getMaximumWidth(this.chart.canvas), newHeight = this.options.maintainAspectRatio ? newWidth / this.chart.aspectRatio : getMaximumHeight(this.chart.canvas); canvas.width = this.chart.width = newWidth; canvas.height = this.chart.height = newHeight; retinaScale(this.chart); if(typeof callback === "function") { callback.apply(this, Array.prototype.slice.call(arguments, 1)); } return this; }, reflow: noop, render: function(reflow) { if(reflow) { this.reflow(); } if(this.options.animation && !reflow) { helpers.animationLoop( this.draw, this.options.animationSteps, this.options.animationEasing, this.options.onAnimationProgress, this.options.onAnimationComplete, this ); } else { this.draw(); this.options.onAnimationComplete.call(this); } return this; }, generateLegend: function() { return template(this.options.legendTemplate, this); }, destroy: function() { this.clear(); unbindEvents(this, this.events); var canvas = this.chart.canvas; // Reset canvas height/width attributes starts a fresh with the canvas context canvas.width = this.chart.width; canvas.height = this.chart.height; // < IE9 doesn't support removeProperty if(canvas.style.removeProperty) { canvas.style.removeProperty('width'); canvas.style.removeProperty('height'); } else { canvas.style.removeAttribute('width'); canvas.style.removeAttribute('height'); } delete Chart.instances[this.id]; }, showTooltip: function(ChartElements, forceRedraw) { // Only redraw the chart if we've actually changed what we're hovering on. if(typeof this.activeElements === 'undefined') this.activeElements = []; var isChanged = (function(Elements) { var changed = false; if(Elements.length !== this.activeElements.length) { changed = true; return changed; } each(Elements, function(element, index) { if(element !== this.activeElements[index]) { changed = true; } }, this); return changed; }).call(this, ChartElements); if(!isChanged && !forceRedraw) { return; } else { this.activeElements = ChartElements; } this.draw(); if(this.options.customTooltips) { this.options.customTooltips(false); } if(ChartElements.length > 0) { // If we have multiple datasets, show a MultiTooltip for all of the data points at that index if(this.datasets && this.datasets.length > 1) { var dataArray, dataIndex; for(var i = this.datasets.length - 1; i >= 0; i--) { dataArray = this.datasets[i].points || this.datasets[i].bars || this.datasets[i].segments; dataIndex = indexOf(dataArray, ChartElements[0]); if(dataIndex !== -1) { break; } } var tooltipLabels = [], tooltipColors = [], medianPosition = (function(index) { // Get all the points at that particular index var Elements = [], dataCollection, xPositions = [], yPositions = [], xMax, yMax, xMin, yMin; helpers.each(this.datasets, function(dataset) { /// ZUI change begin if(dataset.showTooltips === false) return; /// ZUI change end dataCollection = dataset.points || dataset.bars || dataset.segments; if(dataCollection[dataIndex] && dataCollection[dataIndex].hasValue()) { Elements.push(dataCollection[dataIndex]); } }); helpers.each(Elements, function(element) { xPositions.push(element.x); yPositions.push(element.y); //Include any colour information about the element tooltipLabels.push(helpers.template(this.options.multiTooltipTemplate, element)); tooltipColors.push({ fill: element._saved.fillColor || element.fillColor, stroke: element._saved.strokeColor || element.strokeColor }); }, this); yMin = min(yPositions); yMax = max(yPositions); xMin = min(xPositions); xMax = max(xPositions); return { x: (xMin > this.chart.width / 2) ? xMin : xMax, y: (yMin + yMax) / 2 }; }).call(this, dataIndex); new Chart.MultiTooltip({ x: medianPosition.x, y: medianPosition.y, xPadding: this.options.tooltipXPadding, yPadding: this.options.tooltipYPadding, xOffset: this.options.tooltipXOffset, fillColor: this.options.tooltipFillColor, textColor: this.options.tooltipFontColor, fontFamily: this.options.tooltipFontFamily, fontStyle: this.options.tooltipFontStyle, fontSize: this.options.tooltipFontSize, titleTextColor: this.options.tooltipTitleFontColor, titleFontFamily: this.options.tooltipTitleFontFamily, titleFontStyle: this.options.tooltipTitleFontStyle, titleFontSize: this.options.tooltipTitleFontSize, cornerRadius: this.options.tooltipCornerRadius, labels: tooltipLabels, legendColors: tooltipColors, legendColorBackground: this.options.multiTooltipKeyBackground, title: template(this.options.multiTooltipTitleTemplate, ChartElements[0]), chart: this.chart, ctx: this.chart.ctx, custom: this.options.customTooltips }).draw(); } else { each(ChartElements, function(Element) { var tooltipPosition = Element.tooltipPosition(); new Chart.Tooltip({ x: Math.round(tooltipPosition.x), y: Math.round(tooltipPosition.y), xPadding: this.options.tooltipXPadding, yPadding: this.options.tooltipYPadding, fillColor: this.options.tooltipFillColor, textColor: this.options.tooltipFontColor, fontFamily: this.options.tooltipFontFamily, fontStyle: this.options.tooltipFontStyle, fontSize: this.options.tooltipFontSize, caretHeight: this.options.tooltipCaretSize, cornerRadius: this.options.tooltipCornerRadius, text: template(this.options.tooltipTemplate, Element), chart: this.chart, custom: this.options.customTooltips }).draw(); }, this); } } return this; }, toBase64Image: function() { return this.chart.canvas.toDataURL.apply(this.chart.canvas, arguments); } }); Chart.Type.extend = function(extensions) { var parent = this; var ChartType = function() { return parent.apply(this, arguments); }; //Copy the prototype object of the this class ChartType.prototype = clone(parent.prototype); //Now overwrite some of the properties in the base class with the new extensions extend(ChartType.prototype, extensions); ChartType.extend = Chart.Type.extend; if(extensions.name || parent.prototype.name) { var chartName = extensions.name || parent.prototype.name; //Assign any potential default values of the new chart type //If none are defined, we'll use a clone of the chart type this is being extended from. //I.e. if we extend a line chart, we'll use the defaults from the line chart if our new chart //doesn't define some defaults of their own. var baseDefaults = (Chart.defaults[parent.prototype.name]) ? clone(Chart.defaults[parent.prototype.name]) : {}; Chart.defaults[chartName] = extend(baseDefaults, extensions.defaults); Chart.types[chartName] = ChartType; //Register this new chart type in the Chart prototype Chart.prototype[chartName] = function(data, options) { var config = merge(Chart.defaults.global, Chart.defaults[chartName], options || {}); return new ChartType(data, config, this); }; } else { warn("Name not provided for this chart, so it hasn't been registered"); } return parent; }; Chart.Element = function(configuration) { extend(this, configuration); this.initialize.apply(this, arguments); this.save(); }; extend(Chart.Element.prototype, { initialize: function() {}, restore: function(props) { if(!props) { extend(this, this._saved); } else { each(props, function(key) { this[key] = this._saved[key]; }, this); } return this; }, save: function() { this._saved = clone(this); delete this._saved._saved; return this; }, update: function(newProps) { each(newProps, function(value, key) { this._saved[key] = this[key]; this[key] = value; }, this); return this; }, transition: function(props, ease) { each(props, function(value, key) { this[key] = ((value - this._saved[key]) * ease) + this._saved[key]; }, this); return this; }, tooltipPosition: function() { return { x: this.x, y: this.y }; }, hasValue: function() { return isNumber(this.value); } }); Chart.Element.extend = inherits; Chart.Point = Chart.Element.extend({ display: true, inRange: function(chartX, chartY) { var hitDetectionRange = this.hitDetectionRadius + this.radius; return((Math.pow(chartX - this.x, 2) + Math.pow(chartY - this.y, 2)) < Math.pow(hitDetectionRange, 2)); }, draw: function() { if(this.display) { var ctx = this.ctx; ctx.beginPath(); ctx.arc(this.x, this.y, this.radius, 0, Math.PI * 2); ctx.closePath(); ctx.strokeStyle = this.strokeColor; ctx.lineWidth = this.strokeWidth; ctx.fillStyle = this.fillColor; ctx.fill(); ctx.stroke(); } //Quick debug for bezier curve splining //Highlights control points and the line between them. //Handy for dev - stripped in the min version. // ctx.save(); // ctx.fillStyle = "black"; // ctx.strokeStyle = "black" // ctx.beginPath(); // ctx.arc(this.controlPoints.inner.x,this.controlPoints.inner.y, 2, 0, Math.PI*2); // ctx.fill(); // ctx.beginPath(); // ctx.arc(this.controlPoints.outer.x,this.controlPoints.outer.y, 2, 0, Math.PI*2); // ctx.fill(); // ctx.moveTo(this.controlPoints.inner.x,this.controlPoints.inner.y); // ctx.lineTo(this.x, this.y); // ctx.lineTo(this.controlPoints.outer.x,this.controlPoints.outer.y); // ctx.stroke(); // ctx.restore(); } }); Chart.Arc = Chart.Element.extend({ inRange: function(chartX, chartY) { var pointRelativePosition = helpers.getAngleFromPoint(this, { x: chartX, y: chartY }); //Check if within the range of the open/close angle var betweenAngles = (pointRelativePosition.angle >= this.startAngle && pointRelativePosition.angle <= this.endAngle), withinRadius = (pointRelativePosition.distance >= this.innerRadius && pointRelativePosition.distance <= this.outerRadius); return(betweenAngles && withinRadius); //Ensure within the outside of the arc centre, but inside arc outer }, tooltipPosition: function() { var centreAngle = this.startAngle + ((this.endAngle - this.startAngle) / 2), rangeFromCentre = (this.outerRadius - this.innerRadius) / 2 + this.innerRadius; return { x: this.x + (Math.cos(centreAngle) * rangeFromCentre), y: this.y + (Math.sin(centreAngle) * rangeFromCentre) }; }, draw: function(animationPercent) { var easingDecimal = animationPercent || 1; var ctx = this.ctx; ctx.beginPath(); ctx.arc(this.x, this.y, this.outerRadius, this.startAngle, this.endAngle); ctx.arc(this.x, this.y, this.innerRadius, this.endAngle, this.startAngle, true); ctx.closePath(); ctx.strokeStyle = this.strokeColor; ctx.lineWidth = this.strokeWidth; ctx.fillStyle = this.fillColor; ctx.fill(); ctx.lineJoin = 'bevel'; if(this.showStroke) { ctx.stroke(); } // ZUI change begin if (this.circleBeginEnd) { var pointCenterRadius = (this.outerRadius + this.innerRadius) / 2; var circleRadius = (this.outerRadius - this.innerRadius) / 2; ctx.beginPath(); ctx.arc(this.x + Math.cos(this.startAngle) * pointCenterRadius, this.y + Math.sin(this.startAngle) * pointCenterRadius, circleRadius, 0, Math.PI * 2); ctx.closePath(); ctx.fill(); ctx.beginPath(); ctx.arc(this.x + Math.cos(this.endAngle) * pointCenterRadius, this.y + Math.sin(this.endAngle) * pointCenterRadius, circleRadius, 0, Math.PI * 2); ctx.closePath(); ctx.fill(); } // ZUI change end } }); Chart.Rectangle = Chart.Element.extend({ draw: function() { var ctx = this.ctx, halfWidth = this.width / 2, leftX = this.x - halfWidth, rightX = this.x + halfWidth, top = this.base - (this.base - this.y), halfStroke = this.strokeWidth / 2; // Canvas doesn't allow us to stroke inside the width so we can // adjust the sizes to fit if we're setting a stroke on the line if(this.showStroke) { leftX += halfStroke; rightX -= halfStroke; top += halfStroke; } ctx.beginPath(); ctx.fillStyle = this.fillColor; ctx.strokeStyle = this.strokeColor; ctx.lineWidth = this.strokeWidth; // It'd be nice to keep this class totally generic to any rectangle // and simply specify which border to miss out. ctx.moveTo(leftX, this.base); ctx.lineTo(leftX, top); ctx.lineTo(rightX, top); ctx.lineTo(rightX, this.base); ctx.fill(); if(this.showStroke) { ctx.stroke(); } }, height: function() { return this.base - this.y; }, inRange: function(chartX, chartY) { return(chartX >= this.x - this.width / 2 && chartX <= this.x + this.width / 2) && (chartY >= this.y && chartY <= this.base); } }); Chart.Tooltip = Chart.Element.extend({ draw: function() { var ctx = this.chart.ctx; ctx.font = fontString(this.fontSize, this.fontStyle, this.fontFamily); this.xAlign = "center"; this.yAlign = "above"; //Distance between the actual element.y position and the start of the tooltip caret var caretPadding = this.caretPadding = 2; var tooltipWidth = ctx.measureText(this.text).width + 2 * this.xPadding, tooltipRectHeight = this.fontSize + 2 * this.yPadding, tooltipHeight = tooltipRectHeight + this.caretHeight + caretPadding; if(this.x + tooltipWidth / 2 > this.chart.width) { this.xAlign = "left"; } else if(this.x - tooltipWidth / 2 < 0) { this.xAlign = "right"; } if(this.y - tooltipHeight < 0) { this.yAlign = "below"; } var tooltipX = this.x - tooltipWidth / 2, tooltipY = this.y - tooltipHeight; ctx.fillStyle = this.fillColor; // Custom Tooltips if(this.custom) { this.custom(this); } else { switch(this.yAlign) { case "above": //Draw a caret above the x/y ctx.beginPath(); ctx.moveTo(this.x, this.y - caretPadding); ctx.lineTo(this.x + this.caretHeight, this.y - (caretPadding + this.caretHeight)); ctx.lineTo(this.x - this.caretHeight, this.y - (caretPadding + this.caretHeight)); ctx.closePath(); ctx.fill(); break; case "below": tooltipY = this.y + caretPadding + this.caretHeight; //Draw a caret below the x/y ctx.beginPath(); ctx.moveTo(this.x, this.y + caretPadding); ctx.lineTo(this.x + this.caretHeight, this.y + caretPadding + this.caretHeight); ctx.lineTo(this.x - this.caretHeight, this.y + caretPadding + this.caretHeight); ctx.closePath(); ctx.fill(); break; } switch(this.xAlign) { case "left": tooltipX = this.x - tooltipWidth + (this.cornerRadius + this.caretHeight); break; case "right": tooltipX = this.x - (this.cornerRadius + this.caretHeight); break; } drawRoundedRectangle(ctx, tooltipX, tooltipY, tooltipWidth, tooltipRectHeight, this.cornerRadius); ctx.fill(); ctx.fillStyle = this.textColor; ctx.textAlign = "center"; ctx.textBaseline = "middle"; ctx.fillText(this.text, tooltipX + tooltipWidth / 2, tooltipY + tooltipRectHeight / 2); } } }); Chart.MultiTooltip = Chart.Element.extend({ initialize: function() { this.font = fontString(this.fontSize, this.fontStyle, this.fontFamily); this.titleFont = fontString(this.titleFontSize, this.titleFontStyle, this.titleFontFamily); this.height = (this.labels.length * this.fontSize) + ((this.labels.length - 1) * (this.fontSize / 2)) + (this.yPadding * 2) + this.titleFontSize * 1.5; this.ctx.font = this.titleFont; var titleWidth = this.ctx.measureText(this.title).width, //Label has a legend square as well so account for this. labelWidth = longestText(this.ctx, this.font, this.labels) + this.fontSize + 3, longestTextWidth = max([labelWidth, titleWidth]); this.width = longestTextWidth + (this.xPadding * 2); var halfHeight = this.height / 2; //Check to ensure the height will fit on the canvas if(this.y - halfHeight < 0) { this.y = halfHeight; } else if(this.y + halfHeight > this.chart.height) { this.y = this.chart.height - halfHeight; } //Decide whether to align left or right based on position on canvas if(this.x > this.chart.width / 2) { this.x -= this.xOffset + this.width; } else { this.x += this.xOffset; } }, getLineHeight: function(index) { var baseLineHeight = this.y - (this.height / 2) + this.yPadding, afterTitleIndex = index - 1; //If the index is zero, we're getting the title if(index === 0) { return baseLineHeight + this.titleFontSize / 2; } else { return baseLineHeight + ((this.fontSize * 1.5 * afterTitleIndex) + this.fontSize / 2) + this.titleFontSize * 1.5; } }, draw: function() { // Custom Tooltips if(this.custom) { this.custom(this); } else { drawRoundedRectangle(this.ctx, this.x, this.y - this.height / 2, this.width, this.height, this.cornerRadius); var ctx = this.ctx; ctx.fillStyle = this.fillColor; ctx.fill(); ctx.closePath(); ctx.textAlign = "left"; ctx.textBaseline = "middle"; ctx.fillStyle = this.titleTextColor; ctx.font = this.titleFont; ctx.fillText(this.title, this.x + this.xPadding, this.getLineHeight(0)); ctx.font = this.font; helpers.each(this.labels, function(label, index) { ctx.fillStyle = this.textColor; ctx.fillText(label, this.x + this.xPadding + this.fontSize + 3, this.getLineHeight(index + 1)); //A bit gnarly, but clearing this rectangle breaks when using explorercanvas (clears whole canvas) //ctx.clearRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize/2, this.fontSize, this.fontSize); //Instead we'll make a white filled block to put the legendColour palette over. ctx.fillStyle = this.legendColorBackground; ctx.fillRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize / 2, this.fontSize, this.fontSize); ctx.fillStyle = this.legendColors[index].fill; ctx.fillRect(this.x + this.xPadding, this.getLineHeight(index + 1) - this.fontSize / 2, this.fontSize, this.fontSize); }, this); } } }); Chart.Scale = Chart.Element.extend({ initialize: function() { this.fit(); }, buildYLabels: function() { this.yLabels = []; var stepDecimalPlaces = getDecimalPlaces(this.stepValue); for(var i = 0; i <= this.steps; i++) { this.yLabels.push(template(this.templateString, { value: (this.min + (i * this.stepValue)).toFixed(stepDecimalPlaces) })); } this.yLabelWidth = (this.display && this.showLabels) ? longestText(this.ctx, this.font, this.yLabels) : 0; }, addXLabel: function(label) { this.xLabels.push(label); this.valuesCount++; this.fit(); }, removeXLabel: function() { this.xLabels.shift(); this.valuesCount--; this.fit(); }, // Fitting loop to rotate x Labels and figure out what fits there, and also calculate how many Y steps to use fit: function() { // First we need the width of the yLabels, assuming the xLabels aren't rotated // To do that we need the base line at the top and base of the chart, assuming there is no x label rotation this.startPoint = (this.display) ? this.fontSize : 0; this.endPoint = (this.display) ? this.height - (this.fontSize * 1.5) - 5 : this.height; // -5 to pad labels // Apply padding settings to the start and end point. this.startPoint += this.padding; this.endPoint -= this.padding; // Cache the starting height, so can determine if we need to recalculate the scale yAxis var cachedHeight = this.endPoint - this.startPoint, cachedYLabelWidth; // Build the current yLabels so we have an idea of what size they'll be to start /* * This sets what is returned from calculateScaleRange as static properties of this class: * this.steps; this.stepValue; this.min; this.max; * */ this.calculateYRange(cachedHeight); // With these properties set we can now build the array of yLabels // and also the width of the largest yLabel this.buildYLabels(); this.calculateXLabelRotation(); while((cachedHeight > this.endPoint - this.startPoint)) { cachedHeight = this.endPoint - this.startPoint; cachedYLabelWidth = this.yLabelWidth; this.calculateYRange(cachedHeight); this.buildYLabels(); // Only go through the xLabel loop again if the yLabel width has changed if(cachedYLabelWidth < this.yLabelWidth) { this.calculateXLabelRotation(); } } }, calculateXLabelRotation: function() { //Get the width of each grid by calculating the difference //between x offsets between 0 and 1. this.ctx.font = this.font; var firstWidth = this.ctx.measureText(this.xLabels[0]).width, lastWidth = this.ctx.measureText(this.xLabels[this.xLabels.length - 1]).width, firstRotated, lastRotated; this.xScalePaddingRight = lastWidth / 2 + 3; this.xScalePaddingLeft = (firstWidth / 2 > this.yLabelWidth + 10) ? firstWidth / 2 : this.yLabelWidth + 10; this.xLabelRotation = 0; if(this.display) { var originalLabelWidth = longestText(this.ctx, this.font, this.xLabels), cosRotation, firstRotatedWidth; this.xLabelWidth = originalLabelWidth; //Allow 3 pixels x2 padding either side for label readability var xGridWidth = Math.floor(this.calculateX(1) - this.calculateX(0)) - 6; //Max label rotate should be 90 - also act as a loop counter while((this.xLabelWidth > xGridWidth && this.xLabelRotation === 0) || (this.xLabelWidth > xGridWidth && this.xLabelRotation <= 90 && this.xLabelRotation > 0)) { cosRotation = Math.cos(toRadians(this.xLabelRotation)); firstRotated = cosRotation * firstWidth; lastRotated = cosRotation * lastWidth; // We're right aligning the text now. if(firstRotated + this.fontSize / 2 > this.yLabelWidth + 8) { this.xScalePaddingLeft = firstRotated + this.fontSize / 2; } this.xScalePaddingRight = this.fontSize / 2; this.xLabelRotation++; this.xLabelWidth = cosRotation * originalLabelWidth; } if(this.xLabelRotation > 0) { this.endPoint -= Math.sin(toRadians(this.xLabelRotation)) * originalLabelWidth + 3; } } else { this.xLabelWidth = 0; this.xScalePaddingRight = this.padding; this.xScalePaddingLeft = this.padding; } }, // Needs to be overidden in each Chart type // Otherwise we need to pass all the data into the scale class calculateYRange: noop, drawingArea: function() { return this.startPoint - this.endPoint; }, calculateY: function(value) { var scalingFactor = this.drawingArea() / (this.min - this.max); return this.endPoint - (scalingFactor * (value - this.min)); }, calculateX: function(index) { var isRotated = (this.xLabelRotation > 0), // innerWidth = (this.offsetGridLines) ? this.width - offsetLeft - this.padding : this.width - (offsetLeft + halfLabelWidth * 2) - this.padding, innerWidth = this.width - (this.xScalePaddingLeft + this.xScalePaddingRight), valueWidth = innerWidth / Math.max((this.valuesCount - ((this.offsetGridLines) ? 0 : 1)), 1), valueOffset = (valueWidth * index) + this.xScalePaddingLeft; if(this.offsetGridLines) { valueOffset += (valueWidth / 2); } return Math.round(valueOffset); }, update: function(newProps) { helpers.extend(this, newProps); this.fit(); }, draw: function() { var ctx = this.ctx, yLabelGap = (this.endPoint - this.startPoint) / this.steps, xStart = Math.round(this.xScalePaddingLeft); if(this.display) { ctx.fillStyle = this.textColor; ctx.font = this.font; var beyondLineLength = this.showBeyondLine ? 5 : 0; each(this.yLabels, function(labelString, index) { var yLabelCenter = this.endPoint - (yLabelGap * index), linePositionY = Math.round(yLabelCenter), drawHorizontalLine = this.showHorizontalLines; ctx.textAlign = "right"; ctx.textBaseline = "middle"; if(this.showLabels) { ctx.fillText(labelString, xStart - 10, yLabelCenter); } // This is X axis, so draw it if(index === 0 && !drawHorizontalLine) { drawHorizontalLine = true; } if(drawHorizontalLine) { ctx.beginPath(); } if(index > 0) { // This is a grid line in the centre, so drop that ctx.lineWidth = this.gridLineWidth; ctx.strokeStyle = this.gridLineColor; } else { // This is the first line on the scale ctx.lineWidth = this.lineWidth; ctx.strokeStyle = this.lineColor; } linePositionY += helpers.aliasPixel(ctx.lineWidth); if(drawHorizontalLine) { ctx.moveTo(xStart, linePositionY); ctx.lineTo(this.width, linePositionY); ctx.stroke(); ctx.closePath(); } ctx.lineWidth = this.lineWidth; ctx.strokeStyle = this.lineColor; ctx.beginPath(); ctx.moveTo(xStart - beyondLineLength, linePositionY); ctx.lineTo(xStart, linePositionY); ctx.stroke(); ctx.closePath(); }, this); each(this.xLabels, function(label, index) { var xPos = this.calculateX(index) + aliasPixel(this.lineWidth), // Check to see if line/bar here and decide where to place the line linePos = this.calculateX(index - (this.offsetGridLines ? 0.5 : 0)) + aliasPixel(this.lineWidth), isRotated = (this.xLabelRotation > 0), drawVerticalLine = this.showVerticalLines; // This is Y axis, so draw it if(index === 0 && !drawVerticalLine) { drawVerticalLine = true; } if(drawVerticalLine) { ctx.beginPath(); } if(index > 0) { // This is a grid line in the centre, so drop that ctx.lineWidth = this.gridLineWidth; ctx.strokeStyle = this.gridLineColor; } else { // This is the first line on the scale ctx.lineWidth = this.lineWidth; ctx.strokeStyle = this.lineColor; } if(drawVerticalLine) { ctx.moveTo(linePos, this.endPoint); ctx.lineTo(linePos, this.startPoint - 3); ctx.stroke(); ctx.closePath(); } ctx.lineWidth = this.lineWidth; ctx.strokeStyle = this.lineColor; // Small lines at the bottom of the base grid line ctx.beginPath(); ctx.moveTo(linePos, this.endPoint); ctx.lineTo(linePos, this.endPoint + beyondLineLength); ctx.stroke(); ctx.closePath(); ctx.save(); ctx.translate(xPos, (isRotated) ? this.endPoint + 12 : this.endPoint + 8); ctx.rotate(toRadians(this.xLabelRotation) * -1); ctx.font = this.font; ctx.textAlign = (isRotated) ? "right" : "center"; ctx.textBaseline = (isRotated) ? "middle" : "top"; ctx.fillText(label, 0, 0); ctx.restore(); }, this); } } }); Chart.RadialScale = Chart.Element.extend({ initialize: function() { this.size = min([this.height, this.width]); this.drawingArea = (this.display) ? (this.size / 2) - (this.fontSize / 2 + this.backdropPaddingY) : (this.size / 2); }, calculateCenterOffset: function(value) { // Take into account half font size + the yPadding of the top value var scalingFactor = this.drawingArea / (this.max - this.min); return(value - this.min) * scalingFactor; }, update: function() { if(!this.lineArc) { this.setScaleSize(); } else { this.drawingArea = (this.display) ? (this.size / 2) - (this.fontSize / 2 + this.backdropPaddingY) : (this.size / 2); } this.buildYLabels(); }, buildYLabels: function() { this.yLabels = []; var stepDecimalPlaces = getDecimalPlaces(this.stepValue); for(var i = 0; i <= this.steps; i++) { this.yLabels.push(template(this.templateString, { value: (this.min + (i * this.stepValue)).toFixed(stepDecimalPlaces) })); } }, getCircumference: function() { return((Math.PI * 2) / this.valuesCount); }, setScaleSize: function() { /* * Right, this is really confusing and there is a lot of maths going on here * The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9 * * Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif * * Solution: * * We assume the radius of the polygon is half the size of the canvas at first * at each index we check if the text overlaps. * * Where it does, we store that angle and that index. * * After finding the largest index and angle we calculate how much we need to remove * from the shape radius to move the point inwards by that x. * * We average the left and right distances to get the maximum shape radius that can fit in the box * along with labels. * * Once we have that, we can find the centre point for the chart, by taking the x text protrusion * on each side, removing that from the size, halving it and adding the left x protrusion width. * * This will mean we have a shape fitted to the canvas, as large as it can be with the labels * and position it in the most space efficient manner * * https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif */ // Get maximum radius of the polygon. Either half the height (minus the text width) or half the width. // Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points var largestPossibleRadius = min([(this.height / 2 - this.pointLabelFontSize - 5), this.width / 2]), pointPosition, i, textWidth, halfTextWidth, furthestRight = this.width, furthestRightIndex, furthestRightAngle, furthestLeft = 0, furthestLeftIndex, furthestLeftAngle, xProtrusionLeft, xProtrusionRight, radiusReductionRight, radiusReductionLeft, maxWidthRadius; this.ctx.font = fontString(this.pointLabelFontSize, this.pointLabelFontStyle, this.pointLabelFontFamily); for(i = 0; i < this.valuesCount; i++) { // 5px to space the text slightly out - similar to what we do in the draw function. pointPosition = this.getPointPosition(i, largestPossibleRadius); textWidth = this.ctx.measureText(template(this.templateString, { value: this.labels[i] })).width + 5; if(i === 0 || i === this.valuesCount / 2) { // If we're at index zero, or exactly the middle, we're at exactly the top/bottom // of the radar chart, so text will be aligned centrally, so we'll half it and compare // w/left and right text sizes halfTextWidth = textWidth / 2; if(pointPosition.x + halfTextWidth > furthestRight) { furthestRight = pointPosition.x + halfTextWidth; furthestRightIndex = i; } if(pointPosition.x - halfTextWidth < furthestLeft) { furthestLeft = pointPosition.x - halfTextWidth; furthestLeftIndex = i; } } else if(i < this.valuesCount / 2) { // Less than half the values means we'll left align the text if(pointPosition.x + textWidth > furthestRight) { furthestRight = pointPosition.x + textWidth; furthestRightIndex = i; } } else if(i > this.valuesCount / 2) { // More than half the values means we'll right align the text if(pointPosition.x - textWidth < furthestLeft) { furthestLeft = pointPosition.x - textWidth; furthestLeftIndex = i; } } } xProtrusionLeft = furthestLeft; xProtrusionRight = Math.ceil(furthestRight - this.width); furthestRightAngle = this.getIndexAngle(furthestRightIndex); furthestLeftAngle = this.getIndexAngle(furthestLeftIndex); radiusReductionRight = xProtrusionRight / Math.sin(furthestRightAngle + Math.PI / 2); radiusReductionLeft = xProtrusionLeft / Math.sin(furthestLeftAngle + Math.PI / 2); // Ensure we actually need to reduce the size of the chart radiusReductionRight = (isNumber(radiusReductionRight)) ? radiusReductionRight : 0; radiusReductionLeft = (isNumber(radiusReductionLeft)) ? radiusReductionLeft : 0; this.drawingArea = largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2; //this.drawingArea = min([maxWidthRadius, (this.height - (2 * (this.pointLabelFontSize + 5)))/2]) this.setCenterPoint(radiusReductionLeft, radiusReductionRight); }, setCenterPoint: function(leftMovement, rightMovement) { var maxRight = this.width - rightMovement - this.drawingArea, maxLeft = leftMovement + this.drawingArea; this.xCenter = (maxLeft + maxRight) / 2; // Always vertically in the centre as the text height doesn't change this.yCenter = (this.height / 2); }, getIndexAngle: function(index) { var angleMultiplier = (Math.PI * 2) / this.valuesCount; // Start from the top instead of right, so remove a quarter of the circle return index * angleMultiplier - (Math.PI / 2); }, getPointPosition: function(index, distanceFromCenter) { var thisAngle = this.getIndexAngle(index); return { x: (Math.cos(thisAngle) * distanceFromCenter) + this.xCenter, y: (Math.sin(thisAngle) * distanceFromCenter) + this.yCenter }; }, draw: function() { if(this.display) { var ctx = this.ctx; each(this.yLabels, function(label, index) { // Don't draw a centre value if(index > 0) { var yCenterOffset = index * (this.drawingArea / this.steps), yHeight = this.yCenter - yCenterOffset, pointPosition; // Draw circular lines around the scale if(this.lineWidth > 0) { ctx.strokeStyle = this.lineColor; ctx.lineWidth = this.lineWidth; if(this.lineArc) { ctx.beginPath(); ctx.arc(this.xCenter, this.yCenter, yCenterOffset, 0, Math.PI * 2); ctx.closePath(); ctx.stroke(); } else { ctx.beginPath(); for(var i = 0; i < this.valuesCount; i++) { pointPosition = this.getPointPosition(i, this.calculateCenterOffset(this.min + (index * this.stepValue))); if(i === 0) { ctx.moveTo(pointPosition.x, pointPosition.y); } else { ctx.lineTo(pointPosition.x, pointPosition.y); } } ctx.closePath(); ctx.stroke(); } } if(this.showLabels) { ctx.font = fontString(this.fontSize, this.fontStyle, this.fontFamily); if(this.showLabelBackdrop) { var labelWidth = ctx.measureText(label).width; ctx.fillStyle = this.backdropColor; ctx.fillRect( this.xCenter - labelWidth / 2 - this.backdropPaddingX, yHeight - this.fontSize / 2 - this.backdropPaddingY, labelWidth + this.backdropPaddingX * 2, this.fontSize + this.backdropPaddingY * 2 ); } ctx.textAlign = 'center'; ctx.textBaseline = "middle"; ctx.fillStyle = this.fontColor; ctx.fillText(label, this.xCenter, yHeight); } } }, this); if(!this.lineArc) { ctx.lineWidth = this.angleLineWidth; ctx.strokeStyle = this.angleLineColor; for(var i = this.valuesCount - 1; i >= 0; i--) { if(this.angleLineWidth > 0) { var outerPosition = this.getPointPosition(i, this.calculateCenterOffset(this.max)); ctx.beginPath(); ctx.moveTo(this.xCenter, this.yCenter); ctx.lineTo(outerPosition.x, outerPosition.y); ctx.stroke(); ctx.closePath(); } // Extra 3px out for some label spacing var pointLabelPosition = this.getPointPosition(i, this.calculateCenterOffset(this.max) + 5); ctx.font = fontString(this.pointLabelFontSize, this.pointLabelFontStyle, this.pointLabelFontFamily); ctx.fillStyle = this.pointLabelFontColor; var labelsCount = this.labels.length, halfLabelsCount = this.labels.length / 2, quarterLabelsCount = halfLabelsCount / 2, upperHalf = (i < quarterLabelsCount || i > labelsCount - quarterLabelsCount), exactQuarter = (i === quarterLabelsCount || i === labelsCount - quarterLabelsCount); if(i === 0) { ctx.textAlign = 'center'; } else if(i === halfLabelsCount) { ctx.textAlign = 'center'; } else if(i < halfLabelsCount) { ctx.textAlign = 'left'; } else { ctx.textAlign = 'right'; } // Set the correct text baseline based on outer positioning if(exactQuarter) { ctx.textBaseline = 'middle'; } else if(upperHalf) { ctx.textBaseline = 'bottom'; } else { ctx.textBaseline = 'top'; } ctx.fillText(this.labels[i], pointLabelPosition.x, pointLabelPosition.y); } } } } }); // Attach global event to resize each chart instance when the browser resizes helpers.addEvent(window, "resize", (function() { // Basic debounce of resize function so it doesn't hurt performance when resizing browser. var timeout; return function() { clearTimeout(timeout); timeout = setTimeout(function() { each(Chart.instances, function(instance) { // If the responsive flag is set in the chart instance config // Cascade the resize event down to the chart. if(instance.options.responsive) { instance.resize(instance.render, true); } }); }, 50); }; })()); if(amd) { define(function() { return Chart; }); } else if(typeof module === 'object' && module.exports) { module.exports = Chart; } root.Chart = Chart; /// ----- ZUI change begin ----- /// Use jquery object to create Chart object $.fn.chart = function() { var charts = []; this.each(function() { charts.push(new Chart(this.getContext("2d"))); }); return charts.length === 1 ? charts[0] : charts; } /// ----- ZUI change end ----- /// ----- ZUI change begin ----- /// Remove unused code // Chart.noConflict = function() // old code begin // { // root.Chart = previous; // return Chart; // }; // old code end /// ----- ZUI change end ----- /// ----- ZUI change begin ----- /// Add jquery object to namespace /// }).call(this); // Old code }).call(this, jQuery); /// ----- ZUI change end ----- /* ======================================================================== * Chart.js: Chart.line.js [Version: 1.0.2] * http://chartjs.org/ * * ZUI: The file has been changed in ZUI. It will not keep update with the * official version in the future. * http://openzui.com * ======================================================================== * Copyright 2015 Nick Downie, Released under the MIT license * https://github.com/nnnick/Chart.js/blob/master/LICENSE.md * ======================================================================== */ /// ----- ZUI change begin ----- /// Add jquery object to namespace /// (function(){ // Old code (function($) { /// ----- ZUI change end ----- "use strict"; /// ----- ZUI change begin ----- /// Change root to zui shared object /// /// var root = this, // old code var root = $ && $.zui ? $.zui : this, /// ----- ZUI change end ----- Chart = root.Chart, helpers = Chart.helpers; var defaultConfig = { ///Boolean - Whether grid lines are shown across the chart scaleShowGridLines: true, //String - Colour of the grid lines scaleGridLineColor: "rgba(0,0,0,.05)", //Number - Width of the grid lines scaleGridLineWidth: 1, //Boolean - Whether to show horizontal lines (except X axis) scaleShowHorizontalLines: true, /// ZUI change end //Boolean - Whether to show beyond lines scaleShowBeyondLine: true, /// ZUI change end /// //Boolean - Whether to show vertical lines (except Y axis) scaleShowVerticalLines: true, //Boolean - Whether the line is curved between points bezierCurve: true, //Number - Tension of the bezier curve between points bezierCurveTension: 0.4, //Boolean - Whether to show a dot for each point pointDot: true, //Number - Radius of each point dot in pixels pointDotRadius: 4, //Number - Pixel width of point dot stroke pointDotStrokeWidth: 1, //Number - amount extra to add to the radius to cater for hit detection outside the drawn point pointHitDetectionRadius: 20, //Boolean - Whether to show a stroke for datasets datasetStroke: true, //Number - Pixel width of dataset stroke datasetStrokeWidth: 2, //Boolean - Whether to fill the dataset with a colour datasetFill: true, //String - A legend template legendTemplate: "