www.gusucode.com > Piwik 网站流量统计系统 v2.9.1PHP源码程序 > Piwik 网站流量统计系统 v2.9.1/piwik/piwik/libs/jqplot/plugins/jqplot.pieRenderer.js
/**
* jqPlot
* Pure JavaScript plotting plugin using jQuery
*
* Version: @VERSION
* Revision: @REVISION
*
* Copyright (c) 2009-2013 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.PieRenderer
* Plugin renderer to draw a pie 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
* pie renderer plugin, for example:
*
* > <script type="text/javascript" src="plugins/jqplot.pieRenderer.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.PieRenderer,
* > rendererOptions:{
* > sliceMargin: 2,
* > startAngle: -90
* > }
* > }
* > });
*
* A pie 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.PieRenderer = function(){
$.jqplot.LineRenderer.call(this);
};
$.jqplot.PieRenderer.prototype = new $.jqplot.LineRenderer();
$.jqplot.PieRenderer.prototype.constructor = $.jqplot.PieRenderer;
// called with scope of a series
$.jqplot.PieRenderer.prototype.init = function(options, plot) {
// Group: Properties
//
// prop: diameter
// Outer diameter of the pie, auto computed by default
this.diameter = null;
// prop: padding
// padding between the pie and plot edges, legend, etc.
this.padding = 20;
// prop: sliceMargin
// angular spacing between pie slices in degrees.
this.sliceMargin = 0;
// 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: 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 = 0.52;
// prop: dataLabelNudge
// Number of pixels to slide the label away from (+) or toward (-) the center of the pie.
this.dataLabelNudge = 2;
// prop: dataLabelCenterOn
// True to center the data label at its position.
// False to set the inside facing edge of the label at its position.
this.dataLabelCenterOn = true;
// prop: startAngle
// Angle to start drawing pie 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.PieTickRenderer;
// Used as check for conditions where pie shouldn't be drawn.
this._drawData = true;
this._type = 'pie';
// 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.sliceMargin < 0) {
this.sliceMargin = 0;
}
this._diameter = null;
this._radius = null;
// 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]+')');
}
}
this.highlightColorGenerator = new $.jqplot.ColorGenerator(this.highlightColors);
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.PieRenderer.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.PieRenderer.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;
}
return td;
};
function calcRadiusAdjustment(ang) {
return Math.sin((ang - (ang-Math.PI) / 8 / Math.PI )/2.0);
}
function calcRPrime(ang1, ang2, sliceMargin, fill, lineWidth) {
var rprime = 0;
var ang = ang2 - ang1;
var absang = Math.abs(ang);
var sm = sliceMargin;
if (fill == false) {
sm += lineWidth;
}
if (sm > 0 && absang > 0.01 && absang < 6.282) {
rprime = parseFloat(sm) / 2.0 / calcRadiusAdjustment(ang);
}
return rprime;
}
$.jqplot.PieRenderer.prototype.drawSlice = function (ctx, ang1, ang2, color, isShadow) {
if (this._drawData) {
var r = this._radius;
var fill = this.fill;
var lineWidth = this.lineWidth;
var sm = this.sliceMargin;
if (this.fill == false) {
sm += this.lineWidth;
}
ctx.save();
ctx.translate(this._center[0], this._center[1]);
var rprime = calcRPrime(ang1, ang2, this.sliceMargin, this.fill, this.lineWidth);
var transx = rprime * Math.cos((ang1 + ang2) / 2.0);
var transy = rprime * Math.sin((ang1 + ang2) / 2.0);
if ((ang2 - ang1) <= Math.PI) {
r -= rprime;
}
else {
r += rprime;
}
ctx.translate(transx, transy);
if (isShadow) {
for (var i=0, l=this.shadowDepth; i<l; i++) {
ctx.save();
ctx.translate(this.shadowOffset*Math.cos(this.shadowAngle/180*Math.PI), this.shadowOffset*Math.sin(this.shadowAngle/180*Math.PI));
doDraw(r);
}
for (var i=0, l=this.shadowDepth; i<l; i++) {
ctx.restore();
}
}
else {
doDraw(r);
}
ctx.restore();
}
function doDraw (rad) {
// 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.
// 2Pi = 6.2831853, Pi = 3.1415927
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 pies.
if (ang1 >= ang2) {
return;
}
ctx.beginPath();
ctx.fillStyle = color;
ctx.strokeStyle = color;
ctx.lineWidth = lineWidth;
ctx.arc(0, 0, rad, ang1, ang2, false);
ctx.lineTo(0,0);
ctx.closePath();
if (fill) {
ctx.fill();
}
else {
ctx.stroke();
}
}
};
// called with scope of series
$.jqplot.PieRenderer.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 $.jqplot.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 fill = (opts.fill != undefined) ? opts.fill : this.fill;
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;
// Fixes issue #272. Thanks hugwijst!
// reset slice angles array.
this._sliceAngles = [];
var sm = this.sliceMargin;
if (this.fill == false) {
sm += this.lineWidth;
}
var rprime;
var maxrprime = 0;
var ang, ang1, ang2, shadowColor;
var sa = this.startAngle / 180 * Math.PI;
// have to pre-draw shadows, so loop throgh here and calculate some values also.
for (var i=0, l=gd.length; i<l; i++) {
ang1 = (i == 0) ? sa : gd[i-1][1] + sa;
ang2 = gd[i][1] + sa;
this._sliceAngles.push([ang1, ang2]);
rprime = calcRPrime(ang1, ang2, this.sliceMargin, this.fill, this.lineWidth);
if (Math.abs(ang2-ang1) > Math.PI) {
maxrprime = Math.max(rprime, maxrprime);
}
}
if (this.diameter != null && this.diameter > 0) {
this._diameter = this.diameter - 2*maxrprime;
}
else {
this._diameter = d - 2*maxrprime;
}
// Need to check for undersized pie. This can happen if
// plot area too small and legend is too big.
if (this._diameter < 6) {
$.jqplot.log('Diameter of pie too small, not rendering.');
return;
}
var r = this._radius = this._diameter/2;
this._center = [(cw - trans * offx)/2 + trans * offx + maxrprime * Math.cos(sa), (ch - trans*offy)/2 + trans * offy + maxrprime * Math.sin(sa)];
if (this.shadow) {
for (var i=0, l=gd.length; i<l; i++) {
shadowColor = 'rgba(0,0,0,'+this.shadowAlpha+')';
this.renderer.drawSlice.call (this, ctx, this._sliceAngles[i][0], this._sliceAngles[i][1], shadowColor, true);
}
}
for (var i=0; i<gd.length; i++) {
this.renderer.drawSlice.call (this, ctx, this._sliceAngles[i][0], this._sliceAngles[i][1], colorGenerator.next(), false);
if (this.showDataLabels && gd[i][2]*100 >= this.dataLabelThreshold) {
var fstr, avgang = (this._sliceAngles[i][0] + this._sliceAngles[i][1])/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._radius ) * 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 = $('<div class="jqplot-pie-series jqplot-data-label" style="position:absolute;">' + label + '</div>').insertBefore(plot.eventCanvas._elem);
if (this.dataLabelCenterOn) {
x -= labelelem.width()/2;
y -= labelelem.height()/2;
}
else {
x -= labelelem.width() * Math.sin(avgang/2);
y -= labelelem.height()/2;
}
x = Math.round(x);
y = Math.round(y);
labelelem.css({left: x, top: y});
}
}
};
$.jqplot.PieAxisRenderer = function() {
$.jqplot.LinearAxisRenderer.call(this);
};
$.jqplot.PieAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer();
$.jqplot.PieAxisRenderer.prototype.constructor = $.jqplot.PieAxisRenderer;
// There are no traditional axes on a pie chart. We just need to provide
// dummy objects with properties so the plot will render.
// called with scope of axis object.
$.jqplot.PieAxisRenderer.prototype.init = function(options){
//
this.tickRenderer = $.jqplot.PieTickRenderer;
$.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.PieLegendRenderer = function(){
$.jqplot.TableLegendRenderer.call(this);
};
$.jqplot.PieLegendRenderer.prototype = new $.jqplot.TableLegendRenderer();
$.jqplot.PieLegendRenderer.prototype.constructor = $.jqplot.PieLegendRenderer;
/**
* Class: $.jqplot.PieLegendRenderer
* Legend Renderer specific to pie plots. Set by default
* when user creates a pie plot.
*/
$.jqplot.PieLegendRenderer.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.PieLegendRenderer.prototype.draw = function() {
var legend = this;
if (this.show) {
var series = this._series;
this._elem = $(document.createElement('table'));
this._elem.addClass('jqplot-table-legend');
var ss = {position:'absolute'};
if (this.background) {
ss['background'] = this.background;
}
if (this.border) {
ss['border'] = this.border;
}
if (this.fontSize) {
ss['fontSize'] = this.fontSize;
}
if (this.fontFamily) {
ss['fontFamily'] = this.fontFamily;
}
if (this.textColor) {
ss['textColor'] = this.textColor;
}
if (this.marginTop != null) {
ss['marginTop'] = this.marginTop;
}
if (this.marginBottom != null) {
ss['marginBottom'] = this.marginBottom;
}
if (this.marginLeft != null) {
ss['marginLeft'] = this.marginLeft;
}
if (this.marginRight != null) {
ss['marginRight'] = this.marginRight;
}
this._elem.css(ss);
// Pie 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;
var tr, td1, td2;
var lt, rs, color;
var idx = 0;
var div0, div1;
for (i=0; i<nr; i++) {
tr = $(document.createElement('tr'));
tr.addClass('jqplot-table-legend');
if (reverse){
tr.prependTo(this._elem);
}
else{
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 = $(document.createElement('td'));
td1.addClass('jqplot-table-legend jqplot-table-legend-swatch');
td1.css({textAlign: 'center', paddingTop: rs});
div0 = $(document.createElement('div'));
div0.addClass('jqplot-table-legend-swatch-outline');
div1 = $(document.createElement('div'));
div1.addClass('jqplot-table-legend-swatch');
div1.css({backgroundColor: color, borderColor: color});
td1.append(div0.append(div1));
td2 = $(document.createElement('td'));
td2.addClass('jqplot-table-legend jqplot-table-legend-label');
td2.css('paddingTop', rs);
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;
};
$.jqplot.PieRenderer.prototype.handleMove = function(ev, gridpos, datapos, neighbor, plot) {
if (neighbor) {
var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
plot.target.trigger('jqplotDataMouseOver', ins);
if (plot.series[ins[0]].highlightMouseOver && !(ins[0] == plot.plugins.pieRenderer.highlightedSeriesIndex && ins[1] == plot.series[ins[0]]._highlightedPoint)) {
plot.target.trigger('jqplotDataHighlight', ins);
highlight (plot, ins[0], ins[1]);
}
}
else if (neighbor == null) {
unhighlight (plot);
}
};
// this.eventCanvas._elem.bind($.jqplot.eventListenerHooks[i][0], {plot:this}, $.jqplot.eventListenerHooks[i][1]);
// 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 pie series
var setopts = false;
if (options.seriesDefaults.renderer == $.jqplot.PieRenderer) {
setopts = true;
}
else if (options.series) {
for (var i=0; i < options.series.length; i++) {
if (options.series[i].renderer == $.jqplot.PieRenderer) {
setopts = true;
}
}
}
if (setopts) {
options.axesDefaults.renderer = $.jqplot.PieAxisRenderer;
options.legend.renderer = $.jqplot.PieLegendRenderer;
options.legend.preDraw = true;
options.seriesDefaults.pointLabels = {show: false};
}
}
function postInit(target, data, options) {
for (var i=0; i<this.series.length; i++) {
if (this.series[i].renderer.constructor == $.jqplot.PieRenderer) {
// don't allow mouseover and mousedown at same time.
if (this.series[i].highlightMouseOver) {
this.series[i].highlightMouseDown = 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.pieRenderer.highlightCanvas;
canvas._ctx.clearRect(0,0,canvas._ctx.canvas.width, canvas._ctx.canvas.height);
s._highlightedPoint = pidx;
plot.plugins.pieRenderer.highlightedSeriesIndex = sidx;
s.renderer.drawSlice.call(s, canvas._ctx, s._sliceAngles[pidx][0], s._sliceAngles[pidx][1], s.highlightColorGenerator.get(pidx), false);
}
function unhighlight (plot) {
var canvas = plot.plugins.pieRenderer.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.pieRenderer.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.pieRenderer.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.pieRenderer.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.pieRenderer.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.pieRenderer.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.pieRenderer && this.plugins.pieRenderer.highlightCanvas) {
this.plugins.pieRenderer.highlightCanvas.resetCanvas();
this.plugins.pieRenderer.highlightCanvas = null;
}
this.plugins.pieRenderer = {highlightedSeriesIndex:null};
this.plugins.pieRenderer.highlightCanvas = new $.jqplot.GenericCanvas();
// do we have any data labels? if so, put highlight canvas before those
var labels = $(this.targetId+' .jqplot-data-label');
if (labels.length) {
$(labels[0]).before(this.plugins.pieRenderer.highlightCanvas.createElement(this._gridPadding, 'jqplot-pieRenderer-highlight-canvas', this._plotDimensions, this));
}
// else put highlight canvas before event canvas.
else {
this.eventCanvas._elem.before(this.plugins.pieRenderer.highlightCanvas.createElement(this._gridPadding, 'jqplot-pieRenderer-highlight-canvas', this._plotDimensions, this));
}
var hctx = this.plugins.pieRenderer.highlightCanvas.setContext();
this.eventCanvas._elem.bind('mouseleave', {plot:this}, function (ev) { unhighlight(ev.data.plot); });
}
$.jqplot.preInitHooks.push(preInit);
$.jqplot.PieTickRenderer = function() {
$.jqplot.AxisTickRenderer.call(this);
};
$.jqplot.PieTickRenderer.prototype = new $.jqplot.AxisTickRenderer();
$.jqplot.PieTickRenderer.prototype.constructor = $.jqplot.PieTickRenderer;
})(jQuery);