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Direktori : /home/medipszd/public_html/bower_components/chart.js/src/ |
Current File : /home/medipszd/public_html/bower_components/chart.js/src/Chart.PolarArea.js |
(function(){ "use strict"; var root = this, Chart = root.Chart, //Cache a local reference to Chart.helpers helpers = Chart.helpers; var defaultConfig = { //Boolean - Show a backdrop to the scale label scaleShowLabelBackdrop : true, //String - The colour of the label backdrop scaleBackdropColor : "rgba(255,255,255,0.75)", // Boolean - Whether the scale should begin at zero scaleBeginAtZero : true, //Number - The backdrop padding above & below the label in pixels scaleBackdropPaddingY : 2, //Number - The backdrop padding to the side of the label in pixels scaleBackdropPaddingX : 2, //Boolean - Show line for each value in the scale scaleShowLine : true, //Boolean - Stroke a line around each segment in the chart segmentShowStroke : true, //String - The colour of the stroke on each segement. segmentStrokeColor : "#fff", //Number - The width of the stroke value in pixels segmentStrokeWidth : 2, //Number - Amount of animation steps animationSteps : 100, //String - Animation easing effect. animationEasing : "easeOutBounce", //Boolean - Whether to animate the rotation of the chart animateRotate : true, //Boolean - Whether to animate scaling the chart from the centre animateScale : false, //String - A legend template legendTemplate : "<ul class=\"<%=name.toLowerCase()%>-legend\"><% for (var i=0; i<segments.length; i++){%><li><span style=\"background-color:<%=segments[i].fillColor%>\"></span><%if(segments[i].label){%><%=segments[i].label%><%}%></li><%}%></ul>" }; Chart.Type.extend({ //Passing in a name registers this chart in the Chart namespace name: "PolarArea", //Providing a defaults will also register the deafults in the chart namespace defaults : defaultConfig, //Initialize is fired when the chart is initialized - Data is passed in as a parameter //Config is automatically merged by the core of Chart.js, and is available at this.options initialize: function(data){ this.segments = []; //Declare segment class as a chart instance specific class, so it can share props for this instance this.SegmentArc = Chart.Arc.extend({ showStroke : this.options.segmentShowStroke, strokeWidth : this.options.segmentStrokeWidth, strokeColor : this.options.segmentStrokeColor, ctx : this.chart.ctx, innerRadius : 0, x : this.chart.width/2, y : this.chart.height/2 }); this.scale = new Chart.RadialScale({ display: this.options.showScale, fontStyle: this.options.scaleFontStyle, fontSize: this.options.scaleFontSize, fontFamily: this.options.scaleFontFamily, fontColor: this.options.scaleFontColor, showLabels: this.options.scaleShowLabels, showLabelBackdrop: this.options.scaleShowLabelBackdrop, backdropColor: this.options.scaleBackdropColor, backdropPaddingY : this.options.scaleBackdropPaddingY, backdropPaddingX: this.options.scaleBackdropPaddingX, lineWidth: (this.options.scaleShowLine) ? this.options.scaleLineWidth : 0, lineColor: this.options.scaleLineColor, lineArc: true, width: this.chart.width, height: this.chart.height, xCenter: this.chart.width/2, yCenter: this.chart.height/2, ctx : this.chart.ctx, templateString: this.options.scaleLabel, valuesCount: data.length }); this.updateScaleRange(data); this.scale.update(); helpers.each(data,function(segment,index){ this.addData(segment,index,true); },this); //Set up tooltip events on the chart if (this.options.showTooltips){ helpers.bindEvents(this, this.options.tooltipEvents, function(evt){ var activeSegments = (evt.type !== 'mouseout') ? this.getSegmentsAtEvent(evt) : []; helpers.each(this.segments,function(segment){ segment.restore(["fillColor"]); }); helpers.each(activeSegments,function(activeSegment){ activeSegment.fillColor = activeSegment.highlightColor; }); this.showTooltip(activeSegments); }); } this.render(); }, getSegmentsAtEvent : function(e){ var segmentsArray = []; var location = helpers.getRelativePosition(e); helpers.each(this.segments,function(segment){ if (segment.inRange(location.x,location.y)) segmentsArray.push(segment); },this); return segmentsArray; }, addData : function(segment, atIndex, silent){ var index = atIndex || this.segments.length; this.segments.splice(index, 0, new this.SegmentArc({ fillColor: segment.color, highlightColor: segment.highlight || segment.color, label: segment.label, value: segment.value, outerRadius: (this.options.animateScale) ? 0 : this.scale.calculateCenterOffset(segment.value), circumference: (this.options.animateRotate) ? 0 : this.scale.getCircumference(), startAngle: Math.PI * 1.5 })); if (!silent){ this.reflow(); this.update(); } }, removeData: function(atIndex){ var indexToDelete = (helpers.isNumber(atIndex)) ? atIndex : this.segments.length-1; this.segments.splice(indexToDelete, 1); this.reflow(); this.update(); }, calculateTotal: function(data){ this.total = 0; helpers.each(data,function(segment){ this.total += segment.value; },this); this.scale.valuesCount = this.segments.length; }, updateScaleRange: function(datapoints){ var valuesArray = []; helpers.each(datapoints,function(segment){ valuesArray.push(segment.value); }); var scaleSizes = (this.options.scaleOverride) ? { steps: this.options.scaleSteps, stepValue: this.options.scaleStepWidth, min: this.options.scaleStartValue, max: this.options.scaleStartValue + (this.options.scaleSteps * this.options.scaleStepWidth) } : helpers.calculateScaleRange( valuesArray, helpers.min([this.chart.width, this.chart.height])/2, this.options.scaleFontSize, this.options.scaleBeginAtZero, this.options.scaleIntegersOnly ); helpers.extend( this.scale, scaleSizes, { size: helpers.min([this.chart.width, this.chart.height]), xCenter: this.chart.width/2, yCenter: this.chart.height/2 } ); }, update : function(){ this.calculateTotal(this.segments); helpers.each(this.segments,function(segment){ segment.save(); }); this.reflow(); this.render(); }, reflow : function(){ helpers.extend(this.SegmentArc.prototype,{ x : this.chart.width/2, y : this.chart.height/2 }); this.updateScaleRange(this.segments); this.scale.update(); helpers.extend(this.scale,{ xCenter: this.chart.width/2, yCenter: this.chart.height/2 }); helpers.each(this.segments, function(segment){ segment.update({ outerRadius : this.scale.calculateCenterOffset(segment.value) }); }, this); }, draw : function(ease){ var easingDecimal = ease || 1; //Clear & draw the canvas this.clear(); helpers.each(this.segments,function(segment, index){ segment.transition({ circumference : this.scale.getCircumference(), outerRadius : this.scale.calculateCenterOffset(segment.value) },easingDecimal); segment.endAngle = segment.startAngle + segment.circumference; // If we've removed the first segment we need to set the first one to // start at the top. if (index === 0){ segment.startAngle = Math.PI * 1.5; } //Check to see if it's the last segment, if not get the next and update the start angle if (index < this.segments.length - 1){ this.segments[index+1].startAngle = segment.endAngle; } segment.draw(); }, this); this.scale.draw(); } }); }).call(this);