[Web] Add jqplot for future graphs

data/web/js/jqplot.donutRenderer.js

@@ -0,0 +1,816 @@
+/**
+ * jqPlot
+ * Pure JavaScript plotting plugin using jQuery
+ *
+ * Version: 1.0.9
+ * Revision: d96a669
+ *
+ * Copyright (c) 2009-2016 Chris Leonello
+ * jqPlot is currently available for use in all personal or commercial projects 
+ * under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL 
+ * version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can 
+ * choose the license that best suits your project and use it accordingly. 
+ *
+ * Although not required, the author would appreciate an email letting him 
+ * know of any substantial use of jqPlot.  You can reach the author at: 
+ * chris at jqplot dot com or see http://www.jqplot.com/info.php .
+ *
+ * If you are feeling kind and generous, consider supporting the project by
+ * making a donation at: http://www.jqplot.com/donate.php .
+ *
+ * sprintf functions contained in jqplot.sprintf.js by Ash Searle:
+ *
+ *     version 2007.04.27
+ *     author Ash Searle
+ *     http://hexmen.com/blog/2007/03/printf-sprintf/
+ *     http://hexmen.com/js/sprintf.js
+ *     The author (Ash Searle) has placed this code in the public domain:
+ *     "This code is unrestricted: you are free to use it however you like."
+ * 
+ */
+(function($) {
+    /**
+     * Class: $.jqplot.DonutRenderer
+     * Plugin renderer to draw a donut chart.
+     * x values, if present, will be used as slice labels.
+     * y values give slice size.
+     * 
+     * To use this renderer, you need to include the 
+     * donut renderer plugin, for example:
+     * 
+     * > <script type="text/javascript" src="plugins/jqplot.donutRenderer.js"></script>
+     * 
+     * Properties described here are passed into the $.jqplot function
+     * as options on the series renderer.  For example:
+     * 
+     * > plot2 = $.jqplot('chart2', [s1, s2], {
+     * >     seriesDefaults: {
+     * >         renderer:$.jqplot.DonutRenderer,
+     * >         rendererOptions:{
+     * >              sliceMargin: 2,
+     * >              innerDiameter: 110,
+     * >              startAngle: -90
+     * >          }
+     * >      }
+     * > });
+     * 
+     * A donut plot will trigger events on the plot target
+     * according to user interaction.  All events return the event object,
+     * the series index, the point (slice) index, and the point data for 
+     * the appropriate slice.
+     * 
+     * 'jqplotDataMouseOver' - triggered when user mouseing over a slice.
+     * 'jqplotDataHighlight' - triggered the first time user mouses over a slice,
+     * if highlighting is enabled.
+     * 'jqplotDataUnhighlight' - triggered when a user moves the mouse out of
+     * a highlighted slice.
+     * 'jqplotDataClick' - triggered when the user clicks on a slice.
+     * 'jqplotDataRightClick' - tiggered when the user right clicks on a slice if
+     * the "captureRightClick" option is set to true on the plot.
+     */
+    $.jqplot.DonutRenderer = function(){
+        $.jqplot.LineRenderer.call(this);
+    };
+    
+    $.jqplot.DonutRenderer.prototype = new $.jqplot.LineRenderer();
+    $.jqplot.DonutRenderer.prototype.constructor = $.jqplot.DonutRenderer;
+    
+    // called with scope of a series
+    $.jqplot.DonutRenderer.prototype.init = function(options, plot) {
+        // Group: Properties
+        //
+        // prop: diameter
+        // Outer diameter of the donut, auto computed by default
+        this.diameter = null;
+        // prop: innerDiameter
+        // Inner diameter of the donut, auto calculated by default.
+        // If specified will override thickness value.
+        this.innerDiameter = null;
+        // prop: thickness
+        // thickness of the donut, auto computed by default
+        // Overridden by if innerDiameter is specified.
+        this.thickness = null;
+        // prop: padding
+        // padding between the donut and plot edges, legend, etc.
+        this.padding = 20;
+        // prop: sliceMargin
+        // angular spacing between donut slices in degrees.
+        this.sliceMargin = 0;
+        // prop: ringMargin
+        // pixel distance between rings, or multiple series in a donut plot.
+        // null will compute ringMargin based on sliceMargin.
+        this.ringMargin = null;
+        // prop: fill
+        // true or false, whether to fil the slices.
+        this.fill = true;
+        // prop: shadowOffset
+        // offset of the shadow from the slice and offset of 
+        // each succesive stroke of the shadow from the last.
+        this.shadowOffset = 2;
+        // prop: shadowAlpha
+        // transparency of the shadow (0 = transparent, 1 = opaque)
+        this.shadowAlpha = 0.07;
+        // prop: shadowDepth
+        // number of strokes to apply to the shadow, 
+        // each stroke offset shadowOffset from the last.
+        this.shadowDepth = 5;
+        // prop: highlightMouseOver
+        // True to highlight slice when moused over.
+        // This must be false to enable highlightMouseDown to highlight when clicking on a slice.
+        this.highlightMouseOver = true;
+        // prop: highlightMouseDown
+        // True to highlight when a mouse button is pressed over a slice.
+        // This will be disabled if highlightMouseOver is true.
+        this.highlightMouseDown = false;
+        // prop: highlightColors
+        // an array of colors to use when highlighting a slice.
+        this.highlightColors = [];
+        // prop: dataLabels
+        // Either 'label', 'value', 'percent' or an array of labels to place on the pie slices.
+        // Defaults to percentage of each pie slice.
+        this.dataLabels = 'percent';
+        // prop: showDataLabels
+        // true to show data labels on slices.
+        this.showDataLabels = false;
+        // prop: totalLabel
+        // true to show total label in the centre
+        this.totalLabel = false;
+        // prop: dataLabelFormatString
+        // Format string for data labels.  If none, '%s' is used for "label" and for arrays, '%d' for value and '%d%%' for percentage.
+        this.dataLabelFormatString = null;
+        // prop: dataLabelThreshold
+        // Threshhold in percentage (0 - 100) of pie area, below which no label will be displayed.
+        // This applies to all label types, not just to percentage labels.
+        this.dataLabelThreshold = 3;
+        // prop: dataLabelPositionFactor
+        // A Multiplier (0-1) of the pie radius which controls position of label on slice.
+        // Increasing will slide label toward edge of pie, decreasing will slide label toward center of pie.
+        this.dataLabelPositionFactor = 0.4;
+        // prop: dataLabelNudge
+        // Number of pixels to slide the label away from (+) or toward (-) the center of the pie.
+        this.dataLabelNudge = 0;
+        // prop: startAngle
+        // Angle to start drawing donut in degrees.  
+        // According to orientation of canvas coordinate system:
+        // 0 = on the positive x axis
+        // -90 = on the positive y axis.
+        // 90 = on the negaive y axis.
+        // 180 or - 180 = on the negative x axis.
+        this.startAngle = 0;
+        this.tickRenderer = $.jqplot.DonutTickRenderer;
+        // Used as check for conditions where donut shouldn't be drawn.
+        this._drawData = true;
+        this._type = 'donut';
+        
+        // if user has passed in highlightMouseDown option and not set highlightMouseOver, disable highlightMouseOver
+        if (options.highlightMouseDown && options.highlightMouseOver == null) {
+            options.highlightMouseOver = false;
+        }
+        
+        $.extend(true, this, options);
+        if (this.diameter != null) {
+            this.diameter = this.diameter - this.sliceMargin;
+        }
+        this._diameter = null;
+        this._innerDiameter = null;
+        this._radius = null;
+        this._innerRadius = null;
+        this._thickness = null;
+        // references to the previous series in the plot to properly calculate diameters
+        // and thicknesses of nested rings.
+        this._previousSeries = [];
+        this._numberSeries = 1;
+        // array of [start,end] angles arrays, one for each slice.  In radians.
+        this._sliceAngles = [];
+        // index of the currenty highlighted point, if any
+        this._highlightedPoint = null;
+        
+        // set highlight colors if none provided
+        if (this.highlightColors.length == 0) {
+            for (var i=0; i<this.seriesColors.length; i++){
+                var rgba = $.jqplot.getColorComponents(this.seriesColors[i]);
+                var newrgb = [rgba[0], rgba[1], rgba[2]];
+                var sum = newrgb[0] + newrgb[1] + newrgb[2];
+                for (var j=0; j<3; j++) {
+                    // when darkening, lowest color component can be is 60.
+                    newrgb[j] = (sum > 570) ?  newrgb[j] * 0.8 : newrgb[j] + 0.3 * (255 - newrgb[j]);
+                    newrgb[j] = parseInt(newrgb[j], 10);
+                }
+                this.highlightColors.push('rgb('+newrgb[0]+','+newrgb[1]+','+newrgb[2]+')');
+            }
+        }
+        
+        plot.postParseOptionsHooks.addOnce(postParseOptions);
+        plot.postInitHooks.addOnce(postInit);
+        plot.eventListenerHooks.addOnce('jqplotMouseMove', handleMove);
+        plot.eventListenerHooks.addOnce('jqplotMouseDown', handleMouseDown);
+        plot.eventListenerHooks.addOnce('jqplotMouseUp', handleMouseUp);
+        plot.eventListenerHooks.addOnce('jqplotClick', handleClick);
+        plot.eventListenerHooks.addOnce('jqplotRightClick', handleRightClick);
+        plot.postDrawHooks.addOnce(postPlotDraw);
+        
+        
+    };
+    
+    $.jqplot.DonutRenderer.prototype.setGridData = function(plot) {
+        // set gridData property.  This will hold angle in radians of each data point.
+        var stack = [];
+        var td = [];
+        var sa = this.startAngle/180*Math.PI;
+        var tot = 0;
+        // don't know if we have any valid data yet, so set plot to not draw.
+        this._drawData = false;
+        for (var i=0; i<this.data.length; i++){
+            if (this.data[i][1] != 0) {
+                // we have data, O.K. to draw.
+                this._drawData = true;
+            }
+            stack.push(this.data[i][1]);
+            td.push([this.data[i][0]]);
+            if (i>0) {
+                stack[i] += stack[i-1];
+            }
+            tot += this.data[i][1];
+        }
+        var fact = Math.PI*2/stack[stack.length - 1];
+        
+        for (var i=0; i<stack.length; i++) {
+            td[i][1] = stack[i] * fact;
+            td[i][2] = this.data[i][1]/tot;
+        }
+        this.gridData = td;
+    };
+    
+    $.jqplot.DonutRenderer.prototype.makeGridData = function(data, plot) {
+        var stack = [];
+        var td = [];
+        var tot = 0;
+        var sa = this.startAngle/180*Math.PI;
+        // don't know if we have any valid data yet, so set plot to not draw.
+        this._drawData = false;
+        for (var i=0; i<data.length; i++){
+            if (this.data[i][1] != 0) {
+                // we have data, O.K. to draw.
+                this._drawData = true;
+            }
+            stack.push(data[i][1]);
+            td.push([data[i][0]]);
+            if (i>0) {
+                stack[i] += stack[i-1];
+            }
+            tot += data[i][1];
+        }
+        var fact = Math.PI*2/stack[stack.length - 1];
+        
+        for (var i=0; i<stack.length; i++) {
+            td[i][1] = stack[i] * fact;
+            td[i][2] = data[i][1]/tot;
+        }
+        this._totalAmount = tot;        
+        return td;
+    };
+    
+    $.jqplot.DonutRenderer.prototype.drawSlice = function (ctx, ang1, ang2, color, isShadow) {
+        var r = this._diameter / 2;
+        var ri = r - this._thickness;
+        var fill = this.fill;
+        // var lineWidth = this.lineWidth;
+        ctx.save();
+        ctx.translate(this._center[0], this._center[1]);
+        // ctx.translate(this.sliceMargin*Math.cos((ang1+ang2)/2), this.sliceMargin*Math.sin((ang1+ang2)/2));
+        
+        if (isShadow) {
+            for (var i=0; i<this.shadowDepth; i++) {
+                ctx.save();
+                ctx.translate(this.shadowOffset*Math.cos(this.shadowAngle/180*Math.PI), this.shadowOffset*Math.sin(this.shadowAngle/180*Math.PI));
+                doDraw();
+            }
+        }
+        
+        else {
+            doDraw();
+        }
+        
+        function doDraw () {
+            // Fix for IE and Chrome that can't seem to draw circles correctly.
+            // ang2 should always be <= 2 pi since that is the way the data is converted.
+             if (ang2 > 6.282 + this.startAngle) {
+                ang2 = 6.282 + this.startAngle;
+                if (ang1 > ang2) {
+                    ang1 = 6.281 + this.startAngle;
+                }
+            }
+            // Fix for IE, where it can't seem to handle 0 degree angles.  Also avoids
+            // ugly line on unfilled donuts.
+            if (ang1 >= ang2) {
+                return;
+            }
+            ctx.beginPath();  
+            ctx.fillStyle = color;
+            ctx.strokeStyle = color;
+            // ctx.lineWidth = lineWidth;
+            ctx.arc(0, 0, r, ang1, ang2, false);
+            ctx.lineTo(ri*Math.cos(ang2), ri*Math.sin(ang2));
+            ctx.arc(0,0, ri, ang2, ang1, true);
+            ctx.closePath();
+            if (fill) {
+                ctx.fill();
+            }
+            else {
+                ctx.stroke();
+            }
+        }
+        
+        if (isShadow) {
+            for (var i=0; i<this.shadowDepth; i++) {
+                ctx.restore();
+            }
+        }
+        
+        ctx.restore();
+    };
+    
+    // called with scope of series
+    $.jqplot.DonutRenderer.prototype.draw = function (ctx, gd, options, plot) {
+        var i;
+        var opts = (options != undefined) ? options : {};
+        // offset and direction of offset due to legend placement
+        var offx = 0;
+        var offy = 0;
+        var trans = 1;
+        // var colorGenerator = new this.colorGenerator(this.seriesColors);
+        if (options.legendInfo && options.legendInfo.placement == 'insideGrid') {
+            var li = options.legendInfo;
+            switch (li.location) {
+                case 'nw':
+                    offx = li.width + li.xoffset;
+                    break;
+                case 'w':
+                    offx = li.width + li.xoffset;
+                    break;
+                case 'sw':
+                    offx = li.width + li.xoffset;
+                    break;
+                case 'ne':
+                    offx = li.width + li.xoffset;
+                    trans = -1;
+                    break;
+                case 'e':
+                    offx = li.width + li.xoffset;
+                    trans = -1;
+                    break;
+                case 'se':
+                    offx = li.width + li.xoffset;
+                    trans = -1;
+                    break;
+                case 'n':
+                    offy = li.height + li.yoffset;
+                    break;
+                case 's':
+                    offy = li.height + li.yoffset;
+                    trans = -1;
+                    break;
+                default:
+                    break;
+            }
+        }
+        
+        var shadow = (opts.shadow != undefined) ? opts.shadow : this.shadow;
+        var showLine = (opts.showLine != undefined) ? opts.showLine : this.showLine;
+        var fill = (opts.fill != undefined) ? opts.fill : this.fill;
+        //see http://stackoverflow.com/questions/20221461/hidpi-retina-plot-drawing
+        var cw = parseInt(ctx.canvas.style.width);
+        var ch = parseInt(ctx.canvas.style.height);
+        var w = cw - offx - 2 * this.padding;
+        var h = ch - offy - 2 * this.padding;
+        var mindim = Math.min(w,h);
+        var d = mindim;
+        var ringmargin =  (this.ringMargin == null) ? this.sliceMargin * 2.0 : this.ringMargin;
+        
+        for (var i=0; i<this._previousSeries.length; i++) {
+            d -= 2.0 * this._previousSeries[i]._thickness + 2.0 * ringmargin;
+        }
+        this._diameter = this.diameter || d;
+        if (this.innerDiameter != null) {
+            var od = (this._numberSeries > 1 && this.index > 0) ? this._previousSeries[0]._diameter : this._diameter;
+            this._thickness = this.thickness || (od - this.innerDiameter - 2.0*ringmargin*this._numberSeries) / this._numberSeries/2.0;
+        }
+        else {
+            this._thickness = this.thickness || mindim / 2 / (this._numberSeries + 1) * 0.85;
+        }
+        if (this._diameter < 6) {
+            $.jqplot.log("Diameter of donut too small, not rendering.");
+            return;
+        }
+        var r = this._radius = this._diameter/2;
+        this._innerRadius = this._radius - this._thickness;
+        var sa = this.startAngle / 180 * Math.PI;
+        this._center = [(cw - trans * offx)/2 + trans * offx, (ch - trans*offy)/2 + trans * offy];
+        
+        if (this.shadow) {
+            var shadowColor = 'rgba(0,0,0,'+this.shadowAlpha+')';
+            for (var i=0; i<gd.length; i++) {
+                var ang1 = (i == 0) ? sa : gd[i-1][1] + sa;
+                // Adjust ang1 and ang2 for sliceMargin
+                ang1 += this.sliceMargin/180*Math.PI;
+                this.renderer.drawSlice.call (this, ctx, ang1, gd[i][1]+sa, shadowColor, true);
+            }
+            
+        }
+        for (var i=0; i<gd.length; i++) {
+            var ang1 = (i == 0) ? sa : gd[i-1][1] + sa;
+            // Adjust ang1 and ang2 for sliceMargin
+            ang1 += this.sliceMargin/180*Math.PI;
+            var ang2 = gd[i][1] + sa;
+            this._sliceAngles.push([ang1, ang2]);
+            this.renderer.drawSlice.call (this, ctx, ang1, ang2, this.seriesColors[i], false);
+            
+            if (this.showDataLabels && gd[i][2]*100 >= this.dataLabelThreshold) {
+                var fstr, avgang = (ang1+ang2)/2, label;
+                
+                if (this.dataLabels == 'label') {
+                    fstr = this.dataLabelFormatString || '%s';
+                    label = $.jqplot.sprintf(fstr, gd[i][0]);
+                }
+                else if (this.dataLabels == 'value') {
+                    fstr = this.dataLabelFormatString || '%d';
+                    label = $.jqplot.sprintf(fstr, this.data[i][1]);
+                }
+                else if (this.dataLabels == 'percent') {
+                    fstr = this.dataLabelFormatString || '%d%%';
+                    label = $.jqplot.sprintf(fstr, gd[i][2]*100);
+                }
+                else if (this.dataLabels.constructor == Array) {
+                    fstr = this.dataLabelFormatString || '%s';
+                    label = $.jqplot.sprintf(fstr, this.dataLabels[i]);
+                }
+                
+                var fact = this._innerRadius + this._thickness * this.dataLabelPositionFactor + this.sliceMargin + this.dataLabelNudge;
+                
+                var x = this._center[0] + Math.cos(avgang) * fact + this.canvas._offsets.left;
+                var y = this._center[1] + Math.sin(avgang) * fact + this.canvas._offsets.top;
+                
+                var labelelem = $('<span class="jqplot-donut-series jqplot-data-label" style="position:absolute;">' + label + '</span>').insertBefore(plot.eventCanvas._elem);
+                x -= labelelem.width()/2;
+                y -= labelelem.height()/2;
+                x = Math.round(x);
+                y = Math.round(y);
+                labelelem.css({left: x, top: y});
+            }
+        }
+        if (this.totalLabel) {
+            var totalLabel = $('<div class="jqplot-data-label" style="position:absolute">' + this._totalAmount + '</div>').insertAfter(plot.eventCanvas._elem);
+            totalLabel.css({left: this._center[0], top: this._center[1]});
+        }
+    };
+    
+    $.jqplot.DonutAxisRenderer = function() {
+        $.jqplot.LinearAxisRenderer.call(this);
+    };
+    
+    $.jqplot.DonutAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer();
+    $.jqplot.DonutAxisRenderer.prototype.constructor = $.jqplot.DonutAxisRenderer;
+        
+    
+    // There are no traditional axes on a donut chart.  We just need to provide
+    // dummy objects with properties so the plot will render.
+    // called with scope of axis object.
+    $.jqplot.DonutAxisRenderer.prototype.init = function(options){
+        //
+        this.tickRenderer = $.jqplot.DonutTickRenderer;
+        $.extend(true, this, options);
+        // I don't think I'm going to need _dataBounds here.
+        // have to go Axis scaling in a way to fit chart onto plot area
+        // and provide u2p and p2u functionality for mouse cursor, etc.
+        // for convienence set _dataBounds to 0 and 100 and
+        // set min/max to 0 and 100.
+        this._dataBounds = {min:0, max:100};
+        this.min = 0;
+        this.max = 100;
+        this.showTicks = false;
+        this.ticks = [];
+        this.showMark = false;
+        this.show = false; 
+    };
+    
+    
+    
+    
+    $.jqplot.DonutLegendRenderer = function(){
+        $.jqplot.TableLegendRenderer.call(this);
+    };
+    
+    $.jqplot.DonutLegendRenderer.prototype = new $.jqplot.TableLegendRenderer();
+    $.jqplot.DonutLegendRenderer.prototype.constructor = $.jqplot.DonutLegendRenderer;
+    
+    /**
+     * Class: $.jqplot.DonutLegendRenderer
+     * Legend Renderer specific to donut plots.  Set by default
+     * when user creates a donut plot.
+     */
+    $.jqplot.DonutLegendRenderer.prototype.init = function(options) {
+        // Group: Properties
+        //
+        // prop: numberRows
+        // Maximum number of rows in the legend.  0 or null for unlimited.
+        this.numberRows = null;
+        // prop: numberColumns
+        // Maximum number of columns in the legend.  0 or null for unlimited.
+        this.numberColumns = null;
+        $.extend(true, this, options);
+    };
+    
+    // called with context of legend
+    $.jqplot.DonutLegendRenderer.prototype.draw = function() {
+        var legend = this;
+        if (this.show) {
+            var series = this._series;
+            var ss = 'position:absolute;';
+            ss += (this.background) ? 'background:'+this.background+';' : '';
+            ss += (this.border) ? 'border:'+this.border+';' : '';
+            ss += (this.fontSize) ? 'font-size:'+this.fontSize+';' : '';
+            ss += (this.fontFamily) ? 'font-family:'+this.fontFamily+';' : '';
+            ss += (this.textColor) ? 'color:'+this.textColor+';' : '';
+            ss += (this.marginTop != null) ? 'margin-top:'+this.marginTop+';' : '';
+            ss += (this.marginBottom != null) ? 'margin-bottom:'+this.marginBottom+';' : '';
+            ss += (this.marginLeft != null) ? 'margin-left:'+this.marginLeft+';' : '';
+            ss += (this.marginRight != null) ? 'margin-right:'+this.marginRight+';' : '';
+            this._elem = $('<table class="jqplot-table-legend" style="'+ss+'"></table>');
+            // Donut charts legends don't go by number of series, but by number of data points
+            // in the series.  Refactor things here for that.
+            
+            var pad = false, 
+                reverse = false,
+                nr, nc;
+            var s = series[0];
+            var colorGenerator = new $.jqplot.ColorGenerator(s.seriesColors);
+            
+            if (s.show) {
+                var pd = s.data;
+                if (this.numberRows) {
+                    nr = this.numberRows;
+                    if (!this.numberColumns){
+                        nc = Math.ceil(pd.length/nr);
+                    }
+                    else{
+                        nc = this.numberColumns;
+                    }
+                }
+                else if (this.numberColumns) {
+                    nc = this.numberColumns;
+                    nr = Math.ceil(pd.length/this.numberColumns);
+                }
+                else {
+                    nr = pd.length;
+                    nc = 1;
+                }
+                
+                var i, j, tr, td1, td2, lt, rs, color;
+                var idx = 0;    
+                
+                for (i=0; i<nr; i++) {
+                    if (reverse){
+                        tr = $('<tr class="jqplot-table-legend"></tr>').prependTo(this._elem);
+                    }
+                    else{
+                        tr = $('<tr class="jqplot-table-legend"></tr>').appendTo(this._elem);
+                    }
+                    for (j=0; j<nc; j++) {
+                        if (idx < pd.length){
+                            lt = this.labels[idx] || pd[idx][0].toString();
+                            color = colorGenerator.next();
+                            if (!reverse){
+                                if (i>0){
+                                    pad = true;
+                                }
+                                else{
+                                    pad = false;
+                                }
+                            }
+                            else{
+                                if (i == nr -1){
+                                    pad = false;
+                                }
+                                else{
+                                    pad = true;
+                                }
+                            }
+                            rs = (pad) ? this.rowSpacing : '0';
+                
+                            td1 = $('<td class="jqplot-table-legend" style="text-align:center;padding-top:'+rs+';">'+
+                                '<div><div class="jqplot-table-legend-swatch" style="border-color:'+color+';"></div>'+
+                                '</div></td>');
+                            td2 = $('<td class="jqplot-table-legend" style="padding-top:'+rs+';"></td>');
+                            if (this.escapeHtml){
+                                td2.text(lt);
+                            }
+                            else {
+                                td2.html(lt);
+                            }
+                            if (reverse) {
+                                td2.prependTo(tr);
+                                td1.prependTo(tr);
+                            }
+                            else {
+                                td1.appendTo(tr);
+                                td2.appendTo(tr);
+                            }
+                            pad = true;
+                        }
+                        idx++;
+                    }   
+                }
+            }
+        }
+        return this._elem;                
+    };
+    
+    // setup default renderers for axes and legend so user doesn't have to
+    // called with scope of plot
+    function preInit(target, data, options) {
+        options = options || {};
+        options.axesDefaults = options.axesDefaults || {};
+        options.legend = options.legend || {};
+        options.seriesDefaults = options.seriesDefaults || {};
+        // only set these if there is a donut series
+        var setopts = false;
+        if (options.seriesDefaults.renderer == $.jqplot.DonutRenderer) {
+            setopts = true;
+        }
+        else if (options.series) {
+            for (var i=0; i < options.series.length; i++) {
+                if (options.series[i].renderer == $.jqplot.DonutRenderer) {
+                    setopts = true;
+                }
+            }
+        }
+        
+        if (setopts) {
+            options.axesDefaults.renderer = $.jqplot.DonutAxisRenderer;
+            options.legend.renderer = $.jqplot.DonutLegendRenderer;
+            options.legend.preDraw = true;
+            options.seriesDefaults.pointLabels = {show: false};
+        }
+    }
+    
+    // called with scope of plot.
+    function postInit(target, data, options) {
+        // if multiple series, add a reference to the previous one so that
+        // donut rings can nest.
+        for (var i=1; i<this.series.length; i++) {
+            if (!this.series[i]._previousSeries.length){
+                for (var j=0; j<i; j++) {
+                    if (this.series[i].renderer.constructor == $.jqplot.DonutRenderer && this.series[j].renderer.constructor == $.jqplot.DonutRenderer) {
+                        this.series[i]._previousSeries.push(this.series[j]);
+                    }
+                }
+            }
+        }
+        for (i=0; i<this.series.length; i++) {
+            if (this.series[i].renderer.constructor == $.jqplot.DonutRenderer) {
+                this.series[i]._numberSeries = this.series.length;
+                // don't allow mouseover and mousedown at same time.
+                if (this.series[i].highlightMouseOver) {
+                    this.series[i].highlightMouseDown = false;
+                }
+            }
+        }
+    }
+    
+    var postParseOptionsRun = false;
+    // called with scope of plot
+    function postParseOptions(options) {
+        for (var i=0; i<this.series.length; i++) {
+            this.series[i].seriesColors = this.seriesColors;
+            this.series[i].colorGenerator = $.jqplot.colorGenerator;
+        }
+    }
+    
+    function highlight (plot, sidx, pidx) {
+        var s = plot.series[sidx];
+        var canvas = plot.plugins.donutRenderer.highlightCanvas;
+        canvas._ctx.clearRect(0,0,canvas._ctx.canvas.width, canvas._ctx.canvas.height);
+        s._highlightedPoint = pidx;
+        plot.plugins.donutRenderer.highlightedSeriesIndex = sidx;
+        s.renderer.drawSlice.call(s, canvas._ctx, s._sliceAngles[pidx][0], s._sliceAngles[pidx][1], s.highlightColors[pidx], false);
+    }
+    
+    function unhighlight (plot) {
+        var canvas = plot.plugins.donutRenderer.highlightCanvas;
+        canvas._ctx.clearRect(0,0, canvas._ctx.canvas.width, canvas._ctx.canvas.height);
+        for (var i=0; i<plot.series.length; i++) {
+            plot.series[i]._highlightedPoint = null;
+        }
+        plot.plugins.donutRenderer.highlightedSeriesIndex = null;
+        plot.target.trigger('jqplotDataUnhighlight');
+    }
+ 
+    function handleMove(ev, gridpos, datapos, neighbor, plot) {
+        if (neighbor) {
+            var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
+            var evt1 = jQuery.Event('jqplotDataMouseOver');
+            evt1.pageX = ev.pageX;
+            evt1.pageY = ev.pageY;
+            plot.target.trigger(evt1, ins);
+            if (plot.series[ins[0]].highlightMouseOver && !(ins[0] == plot.plugins.donutRenderer.highlightedSeriesIndex && ins[1] == plot.series[ins[0]]._highlightedPoint)) {
+                var evt = jQuery.Event('jqplotDataHighlight');
+                evt.which = ev.which;
+                evt.pageX = ev.pageX;
+                evt.pageY = ev.pageY;
+                plot.target.trigger(evt, ins);
+                highlight (plot, ins[0], ins[1]);
+            }
+        }
+        else if (neighbor == null) {
+            unhighlight (plot);
+        }
+    } 
+    
+    function handleMouseDown(ev, gridpos, datapos, neighbor, plot) {
+        if (neighbor) {
+            var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
+            if (plot.series[ins[0]].highlightMouseDown && !(ins[0] == plot.plugins.donutRenderer.highlightedSeriesIndex && ins[1] == plot.series[ins[0]]._highlightedPoint)) {
+                var evt = jQuery.Event('jqplotDataHighlight');
+                evt.which = ev.which;
+                evt.pageX = ev.pageX;
+                evt.pageY = ev.pageY;
+                plot.target.trigger(evt, ins);
+                highlight (plot, ins[0], ins[1]);
+            }
+        }
+        else if (neighbor == null) {
+            unhighlight (plot);
+        }
+    }
+    
+    function handleMouseUp(ev, gridpos, datapos, neighbor, plot) {
+        var idx = plot.plugins.donutRenderer.highlightedSeriesIndex;
+        if (idx != null && plot.series[idx].highlightMouseDown) {
+            unhighlight(plot);
+        }
+    }
+    
+    function handleClick(ev, gridpos, datapos, neighbor, plot) {
+        if (neighbor) {
+            var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
+            var evt = jQuery.Event('jqplotDataClick');
+            evt.which = ev.which;
+            evt.pageX = ev.pageX;
+            evt.pageY = ev.pageY;
+            plot.target.trigger(evt, ins);
+        }
+    }
+    
+    function handleRightClick(ev, gridpos, datapos, neighbor, plot) {
+        if (neighbor) {
+            var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
+            var idx = plot.plugins.donutRenderer.highlightedSeriesIndex;
+            if (idx != null && plot.series[idx].highlightMouseDown) {
+                unhighlight(plot);
+            }
+            var evt = jQuery.Event('jqplotDataRightClick');
+            evt.which = ev.which;
+            evt.pageX = ev.pageX;
+            evt.pageY = ev.pageY;
+            plot.target.trigger(evt, ins);
+        }
+    }    
+    
+    // called within context of plot
+    // create a canvas which we can draw on.
+    // insert it before the eventCanvas, so eventCanvas will still capture events.
+    function postPlotDraw() {
+        // Memory Leaks patch    
+        if (this.plugins.donutRenderer && this.plugins.donutRenderer.highlightCanvas) {
+            this.plugins.donutRenderer.highlightCanvas.resetCanvas();
+            this.plugins.donutRenderer.highlightCanvas = null;
+        }
+
+        this.plugins.donutRenderer = {highlightedSeriesIndex:null};
+        this.plugins.donutRenderer.highlightCanvas = new $.jqplot.GenericCanvas();
+        // do we have any data labels?  if so, put highlight canvas before those
+        // Fix for broken jquery :first selector with canvas (VML) elements.
+        var labels = $(this.targetId+' .jqplot-data-label');
+        if (labels.length) {
+            $(labels[0]).before(this.plugins.donutRenderer.highlightCanvas.createElement(this._gridPadding, 'jqplot-donutRenderer-highlight-canvas', this._plotDimensions, this));
+        }
+        // else put highlight canvas before event canvas.
+        else {
+            this.eventCanvas._elem.before(this.plugins.donutRenderer.highlightCanvas.createElement(this._gridPadding, 'jqplot-donutRenderer-highlight-canvas', this._plotDimensions, this));
+        }
+        var hctx = this.plugins.donutRenderer.highlightCanvas.setContext();
+        this.eventCanvas._elem.bind('mouseleave', {plot:this}, function (ev) { unhighlight(ev.data.plot); });
+    }
+    
+    $.jqplot.preInitHooks.push(preInit);
+    
+    $.jqplot.DonutTickRenderer = function() {
+        $.jqplot.AxisTickRenderer.call(this);
+    };
+    
+    $.jqplot.DonutTickRenderer.prototype = new $.jqplot.AxisTickRenderer();
+    $.jqplot.DonutTickRenderer.prototype.constructor = $.jqplot.DonutTickRenderer;
+    
+})(jQuery);
+    
+