--- a/lib/flot/jquery.flot.pie.js +++ b/lib/flot/jquery.flot.pie.js @@ -1,751 +1,751 @@ -/* -Flot plugin for rendering pie charts. The plugin assumes the data is -coming is as a single data value for each series, and each of those -values is a positive value or zero (negative numbers don't make -any sense and will cause strange effects). The data values do -NOT need to be passed in as percentage values because it -internally calculates the total and percentages. - -* Created by Brian Medendorp, June 2009 -* Updated November 2009 with contributions from: btburnett3, Anthony Aragues and Xavi Ivars - -* Changes: - 2009-10-22: lineJoin set to round - 2009-10-23: IE full circle fix, donut - 2009-11-11: Added basic hover from btburnett3 - does not work in IE, and center is off in Chrome and Opera - 2009-11-17: Added IE hover capability submitted by Anthony Aragues - 2009-11-18: Added bug fix submitted by Xavi Ivars (issues with arrays when other JS libraries are included as well) - - -Available options are: -series: { - pie: { - show: true/false - radius: 0-1 for percentage of fullsize, or a specified pixel length, or 'auto' - innerRadius: 0-1 for percentage of fullsize or a specified pixel length, for creating a donut effect - startAngle: 0-2 factor of PI used for starting angle (in radians) i.e 3/2 starts at the top, 0 and 2 have the same result - tilt: 0-1 for percentage to tilt the pie, where 1 is no tilt, and 0 is completely flat (nothing will show) - offset: { - top: integer value to move the pie up or down - left: integer value to move the pie left or right, or 'auto' - }, - stroke: { - color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#FFF') - width: integer pixel width of the stroke - }, - label: { - show: true/false, or 'auto' - formatter: a user-defined function that modifies the text/style of the label text - radius: 0-1 for percentage of fullsize, or a specified pixel length - background: { - color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#000') - opacity: 0-1 - }, - threshold: 0-1 for the percentage value at which to hide labels (if they're too small) - }, - combine: { - threshold: 0-1 for the percentage value at which to combine slices (if they're too small) - color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#CCC'), if null, the plugin will automatically use the color of the first slice to be combined - label: any text value of what the combined slice should be labeled - } - highlight: { - opacity: 0-1 - } - } -} - -More detail and specific examples can be found in the included HTML file. - -*/ - -(function ($) -{ - function init(plot) // this is the "body" of the plugin - { - var canvas = null; - var target = null; - var maxRadius = null; - var centerLeft = null; - var centerTop = null; - var total = 0; - var redraw = true; - var redrawAttempts = 10; - var shrink = 0.95; - var legendWidth = 0; - var processed = false; - var raw = false; - - // interactive variables - var highlights = []; - - // add hook to determine if pie plugin in enabled, and then perform necessary operations - plot.hooks.processOptions.push(checkPieEnabled); - plot.hooks.bindEvents.push(bindEvents); - - // check to see if the pie plugin is enabled - function checkPieEnabled(plot, options) - { - if (options.series.pie.show) - { - //disable grid - options.grid.show = false; - - // set labels.show - if (options.series.pie.label.show=='auto') - if (options.legend.show) - options.series.pie.label.show = false; - else - options.series.pie.label.show = true; - - // set radius - if (options.series.pie.radius=='auto') - if (options.series.pie.label.show) - options.series.pie.radius = 3/4; - else - options.series.pie.radius = 1; - - // ensure sane tilt - if (options.series.pie.tilt>1) - options.series.pie.tilt=1; - if (options.series.pie.tilt<0) - options.series.pie.tilt=0; - - // add processData hook to do transformations on the data - plot.hooks.processDatapoints.push(processDatapoints); - plot.hooks.drawOverlay.push(drawOverlay); - - // add draw hook - plot.hooks.draw.push(draw); - } - } - - // bind hoverable events - function bindEvents(plot, eventHolder) - { - var options = plot.getOptions(); - - if (options.series.pie.show && options.grid.hoverable) - eventHolder.unbind('mousemove').mousemove(onMouseMove); - - if (options.series.pie.show && options.grid.clickable) - eventHolder.unbind('click').click(onClick); - } - - - // debugging function that prints out an object - function alertObject(obj) - { - var msg = ''; - function traverse(obj, depth) - { - if (!depth) - depth = 0; - for (var i = 0; i < obj.length; ++i) - { - for (var j=0; j<depth; j++) - msg += '\t'; - - if( typeof obj[i] == "object") - { // its an object - msg += ''+i+':\n'; - traverse(obj[i], depth+1); - } - else - { // its a value - msg += ''+i+': '+obj[i]+'\n'; - } - } - } - traverse(obj); - alert(msg); - } - - function calcTotal(data) - { - for (var i = 0; i < data.length; ++i) - { - var item = parseFloat(data[i].data[0][1]); - if (item) - total += item; - } - } - - function processDatapoints(plot, series, data, datapoints) - { - if (!processed) - { - processed = true; - - canvas = plot.getCanvas(); - target = $(canvas).parent(); - options = plot.getOptions(); - - plot.setData(combine(plot.getData())); - } - } - - function setupPie() - { - legendWidth = target.children().filter('.legend').children().width(); - - // calculate maximum radius and center point - maxRadius = Math.min(canvas.width,(canvas.height/options.series.pie.tilt))/2; - centerTop = (canvas.height/2)+options.series.pie.offset.top; - centerLeft = (canvas.width/2); - - if (options.series.pie.offset.left=='auto') - if (options.legend.position.match('w')) - centerLeft += legendWidth/2; - else - centerLeft -= legendWidth/2; - else - centerLeft += options.series.pie.offset.left; - - if (centerLeft<maxRadius) - centerLeft = maxRadius; - else if (centerLeft>canvas.width-maxRadius) - centerLeft = canvas.width-maxRadius; - } - - function fixData(data) - { - for (var i = 0; i < data.length; ++i) - { - if (typeof(data[i].data)=='number') - data[i].data = [[1,data[i].data]]; - else if (typeof(data[i].data)=='undefined' || typeof(data[i].data[0])=='undefined') - { - if (typeof(data[i].data)!='undefined' && typeof(data[i].data.label)!='undefined') - data[i].label = data[i].data.label; // fix weirdness coming from flot - data[i].data = [[1,0]]; - - } - } - return data; - } - - function combine(data) - { - data = fixData(data); - calcTotal(data); - var combined = 0; - var numCombined = 0; - var color = options.series.pie.combine.color; - - var newdata = []; - for (var i = 0; i < data.length; ++i) - { - // make sure its a number - data[i].data[0][1] = parseFloat(data[i].data[0][1]); - if (!data[i].data[0][1]) - data[i].data[0][1] = 0; - - if (data[i].data[0][1]/total<=options.series.pie.combine.threshold) - { - combined += data[i].data[0][1]; - numCombined++; - if (!color) - color = data[i].color; - } - else - { - newdata.push({ - data: [[1,data[i].data[0][1]]], - color: data[i].color, - label: data[i].label, - angle: (data[i].data[0][1]*(Math.PI*2))/total, - percent: (data[i].data[0][1]/total*100) - }); - } - } - if (numCombined>0) - newdata.push({ - data: [[1,combined]], - color: color, - label: options.series.pie.combine.label, - angle: (combined*(Math.PI*2))/total, - percent: (combined/total*100) - }); - return newdata; - } - - function draw(plot, newCtx) - { - if (!target) return; // if no series were passed - ctx = newCtx; - - setupPie(); - var slices = plot.getData(); - - var attempts = 0; - while (redraw && attempts<redrawAttempts) - { - redraw = false; - if (attempts>0) - maxRadius *= shrink; - attempts += 1; - clear(); - if (options.series.pie.tilt<=0.8) - drawShadow(); - drawPie(); - } - if (attempts >= redrawAttempts) { - clear(); - target.prepend('<div class="error">Could not draw pie with labels contained inside canvas</div>'); - } - - if ( plot.setSeries && plot.insertLegend ) - { - plot.setSeries(slices); - plot.insertLegend(); - } - - // we're actually done at this point, just defining internal functions at this point - - function clear() - { - ctx.clearRect(0,0,canvas.width,canvas.height); - target.children().filter('.pieLabel, .pieLabelBackground').remove(); - } - - function drawShadow() - { - var shadowLeft = 5; - var shadowTop = 15; - var edge = 10; - var alpha = 0.02; - - // set radius - if (options.series.pie.radius>1) - var radius = options.series.pie.radius; - else - var radius = maxRadius * options.series.pie.radius; - - if (radius>=(canvas.width/2)-shadowLeft || radius*options.series.pie.tilt>=(canvas.height/2)-shadowTop || radius<=edge) - return; // shadow would be outside canvas, so don't draw it - - ctx.save(); - ctx.translate(shadowLeft,shadowTop); - ctx.globalAlpha = alpha; - ctx.fillStyle = '#000'; - - // center and rotate to starting position - ctx.translate(centerLeft,centerTop); - ctx.scale(1, options.series.pie.tilt); - - //radius -= edge; - for (var i=1; i<=edge; i++) - { - ctx.beginPath(); - ctx.arc(0,0,radius,0,Math.PI*2,false); - ctx.fill(); - radius -= i; - } - - ctx.restore(); - } - - function drawPie() - { - startAngle = Math.PI*options.series.pie.startAngle; - - // set radius - if (options.series.pie.radius>1) - var radius = options.series.pie.radius; - else - var radius = maxRadius * options.series.pie.radius; - - // center and rotate to starting position - ctx.save(); - ctx.translate(centerLeft,centerTop); - ctx.scale(1, options.series.pie.tilt); - //ctx.rotate(startAngle); // start at top; -- This doesn't work properly in Opera - - // draw slices - ctx.save(); - var currentAngle = startAngle; - for (var i = 0; i < slices.length; ++i) - { - slices[i].startAngle = currentAngle; - drawSlice(slices[i].angle, slices[i].color, true); - } - ctx.restore(); - - // draw slice outlines - ctx.save(); - ctx.lineWidth = options.series.pie.stroke.width; - currentAngle = startAngle; - for (var i = 0; i < slices.length; ++i) - drawSlice(slices[i].angle, options.series.pie.stroke.color, false); - ctx.restore(); - - // draw donut hole - drawDonutHole(ctx); - - // draw labels - if (options.series.pie.label.show) - drawLabels(); - - // restore to original state - ctx.restore(); - - function drawSlice(angle, color, fill) - { - if (angle<=0) - return; - - if (fill) - ctx.fillStyle = color; - else - { - ctx.strokeStyle = color; - ctx.lineJoin = 'round'; - } - - ctx.beginPath(); - if (Math.abs(angle - Math.PI*2) > 0.000000001) - ctx.moveTo(0,0); // Center of the pie - else if ($.browser.msie) - angle -= 0.0001; - //ctx.arc(0,0,radius,0,angle,false); // This doesn't work properly in Opera - ctx.arc(0,0,radius,currentAngle,currentAngle+angle,false); - ctx.closePath(); - //ctx.rotate(angle); // This doesn't work properly in Opera - currentAngle += angle; - - if (fill) - ctx.fill(); - else - ctx.stroke(); - } - - function drawLabels() - { - var currentAngle = startAngle; - - // set radius - if (options.series.pie.label.radius>1) - var radius = options.series.pie.label.radius; - else - var radius = maxRadius * options.series.pie.label.radius; - - for (var i = 0; i < slices.length; ++i) - { - if (slices[i].percent >= options.series.pie.label.threshold*100) - drawLabel(slices[i], currentAngle, i); - currentAngle += slices[i].angle; - } - - function drawLabel(slice, startAngle, index) - { - if (slice.data[0][1]==0) - return; - - // format label text - var lf = options.legend.labelFormatter, text, plf = options.series.pie.label.formatter; - if (lf) - text = lf(slice.label, slice); - else - text = slice.label; - if (plf) - text = plf(text, slice); - - var halfAngle = ((startAngle+slice.angle) + startAngle)/2; - var x = centerLeft + Math.round(Math.cos(halfAngle) * radius); - var y = centerTop + Math.round(Math.sin(halfAngle) * radius) * options.series.pie.tilt; - - var html = '<span class="pieLabel" id="pieLabel'+index+'" style="position:absolute;top:' + y + 'px;left:' + x + 'px;">' + text + "</span>"; - target.append(html); - var label = target.children('#pieLabel'+index); - var labelTop = (y - label.height()/2); - var labelLeft = (x - label.width()/2); - label.css('top', labelTop); - label.css('left', labelLeft); - - // check to make sure that the label is not outside the canvas - if (0-labelTop>0 || 0-labelLeft>0 || canvas.height-(labelTop+label.height())<0 || canvas.width-(labelLeft+label.width())<0) - redraw = true; - - if (options.series.pie.label.background.opacity != 0) { - // put in the transparent background separately to avoid blended labels and label boxes - var c = options.series.pie.label.background.color; - if (c == null) { - c = slice.color; - } - var pos = 'top:'+labelTop+'px;left:'+labelLeft+'px;'; - $('<div class="pieLabelBackground" style="position:absolute;width:' + label.width() + 'px;height:' + label.height() + 'px;' + pos +'background-color:' + c + ';"> </div>').insertBefore(label).css('opacity', options.series.pie.label.background.opacity); - } - } // end individual label function - } // end drawLabels function - } // end drawPie function - } // end draw function - - // Placed here because it needs to be accessed from multiple locations - function drawDonutHole(layer) - { - // draw donut hole - if(options.series.pie.innerRadius > 0) - { - // subtract the center - layer.save(); - innerRadius = options.series.pie.innerRadius > 1 ? options.series.pie.innerRadius : maxRadius * options.series.pie.innerRadius; - layer.globalCompositeOperation = 'destination-out'; // this does not work with excanvas, but it will fall back to using the stroke color - layer.beginPath(); - layer.fillStyle = options.series.pie.stroke.color; - layer.arc(0,0,innerRadius,0,Math.PI*2,false); - layer.fill(); - layer.closePath(); - layer.restore(); - - // add inner stroke - layer.save(); - layer.beginPath(); - layer.strokeStyle = options.series.pie.stroke.color; - layer.arc(0,0,innerRadius,0,Math.PI*2,false); - layer.stroke(); - layer.closePath(); - layer.restore(); - // TODO: add extra shadow inside hole (with a mask) if the pie is tilted. - } - } - - //-- Additional Interactive related functions -- - - function isPointInPoly(poly, pt) - { - for(var c = false, i = -1, l = poly.length, j = l - 1; ++i < l; j = i) - ((poly[i][1] <= pt[1] && pt[1] < poly[j][1]) || (poly[j][1] <= pt[1] && pt[1]< poly[i][1])) - && (pt[0] < (poly[j][0] - poly[i][0]) * (pt[1] - poly[i][1]) / (poly[j][1] - poly[i][1]) + poly[i][0]) - && (c = !c); - return c; - } - - function findNearbySlice(mouseX, mouseY) - { - var slices = plot.getData(), - options = plot.getOptions(), - radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius; - - for (var i = 0; i < slices.length; ++i) - { - var s = slices[i]; - - if(s.pie.show) - { - ctx.save(); - ctx.beginPath(); - ctx.moveTo(0,0); // Center of the pie - //ctx.scale(1, options.series.pie.tilt); // this actually seems to break everything when here. - ctx.arc(0,0,radius,s.startAngle,s.startAngle+s.angle,false); - ctx.closePath(); - x = mouseX-centerLeft; - y = mouseY-centerTop; - if(ctx.isPointInPath) - { - if (ctx.isPointInPath(mouseX-centerLeft, mouseY-centerTop)) - { - //alert('found slice!'); - ctx.restore(); - return {datapoint: [s.percent, s.data], dataIndex: 0, series: s, seriesIndex: i}; - } - } - else - { - // excanvas for IE doesn;t support isPointInPath, this is a workaround. - p1X = (radius * Math.cos(s.startAngle)); - p1Y = (radius * Math.sin(s.startAngle)); - p2X = (radius * Math.cos(s.startAngle+(s.angle/4))); - p2Y = (radius * Math.sin(s.startAngle+(s.angle/4))); - p3X = (radius * Math.cos(s.startAngle+(s.angle/2))); - p3Y = (radius * Math.sin(s.startAngle+(s.angle/2))); - p4X = (radius * Math.cos(s.startAngle+(s.angle/1.5))); - p4Y = (radius * Math.sin(s.startAngle+(s.angle/1.5))); - p5X = (radius * Math.cos(s.startAngle+s.angle)); - p5Y = (radius * Math.sin(s.startAngle+s.angle)); - arrPoly = [[0,0],[p1X,p1Y],[p2X,p2Y],[p3X,p3Y],[p4X,p4Y],[p5X,p5Y]]; - arrPoint = [x,y]; - // TODO: perhaps do some mathmatical trickery here with the Y-coordinate to compensate for pie tilt? - if(isPointInPoly(arrPoly, arrPoint)) - { - ctx.restore(); - return {datapoint: [s.percent, s.data], dataIndex: 0, series: s, seriesIndex: i}; - } - } - ctx.restore(); - } - } - - return null; - } - - function onMouseMove(e) - { - triggerClickHoverEvent('plothover', e); - } - - function onClick(e) - { - triggerClickHoverEvent('plotclick', e); - } - - // trigger click or hover event (they send the same parameters so we share their code) - function triggerClickHoverEvent(eventname, e) - { - var offset = plot.offset(), - canvasX = parseInt(e.pageX - offset.left), - canvasY = parseInt(e.pageY - offset.top), - item = findNearbySlice(canvasX, canvasY); - - if (options.grid.autoHighlight) - { - // clear auto-highlights - for (var i = 0; i < highlights.length; ++i) - { - var h = highlights[i]; - if (h.auto == eventname && !(item && h.series == item.series)) - unhighlight(h.series); - } - } - - // highlight the slice - if (item) - highlight(item.series, eventname); - - // trigger any hover bind events - var pos = { pageX: e.pageX, pageY: e.pageY }; - target.trigger(eventname, [ pos, item ]); - } - - function highlight(s, auto) - { - if (typeof s == "number") - s = series[s]; - - var i = indexOfHighlight(s); - if (i == -1) - { - highlights.push({ series: s, auto: auto }); - plot.triggerRedrawOverlay(); - } - else if (!auto) - highlights[i].auto = false; - } - - function unhighlight(s) - { - if (s == null) - { - highlights = []; - plot.triggerRedrawOverlay(); - } - - if (typeof s == "number") - s = series[s]; - - var i = indexOfHighlight(s); - if (i != -1) - { - highlights.splice(i, 1); - plot.triggerRedrawOverlay(); - } - } - - function indexOfHighlight(s) - { - for (var i = 0; i < highlights.length; ++i) - { - var h = highlights[i]; - if (h.series == s) - return i; - } - return -1; - } - - function drawOverlay(plot, octx) - { - //alert(options.series.pie.radius); - var options = plot.getOptions(); - //alert(options.series.pie.radius); - - var radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius; - - octx.save(); - octx.translate(centerLeft, centerTop); - octx.scale(1, options.series.pie.tilt); - - for (i = 0; i < highlights.length; ++i) - drawHighlight(highlights[i].series); - - drawDonutHole(octx); - - octx.restore(); - - function drawHighlight(series) - { - if (series.angle < 0) return; - - //octx.fillStyle = parseColor(options.series.pie.highlight.color).scale(null, null, null, options.series.pie.highlight.opacity).toString(); - octx.fillStyle = "rgba(255, 255, 255, "+options.series.pie.highlight.opacity+")"; // this is temporary until we have access to parseColor - - octx.beginPath(); - if (Math.abs(series.angle - Math.PI*2) > 0.000000001) - octx.moveTo(0,0); // Center of the pie - octx.arc(0,0,radius,series.startAngle,series.startAngle+series.angle,false); - octx.closePath(); - octx.fill(); - } - - } - - } // end init (plugin body) - - // define pie specific options and their default values - var options = { - series: { - pie: { - show: false, - radius: 'auto', // actual radius of the visible pie (based on full calculated radius if <=1, or hard pixel value) - innerRadius:0, /* for donut */ - startAngle: 3/2, - tilt: 1, - offset: { - top: 0, - left: 'auto' - }, - stroke: { - color: '#FFF', - width: 1 - }, - label: { - show: 'auto', - formatter: function(label, slice){ - return '<div style="font-size:x-small;text-align:center;padding:2px;color:'+slice.color+';">'+label+'<br/>'+Math.round(slice.percent)+'%</div>'; - }, // formatter function - radius: 1, // radius at which to place the labels (based on full calculated radius if <=1, or hard pixel value) - background: { - color: null, - opacity: 0 - }, - threshold: 0 // percentage at which to hide the label (i.e. the slice is too narrow) - }, - combine: { - threshold: -1, // percentage at which to combine little slices into one larger slice - color: null, // color to give the new slice (auto-generated if null) - label: 'Other' // label to give the new slice - }, - highlight: { - //color: '#FFF', // will add this functionality once parseColor is available - opacity: 0.5 - } - } - } - }; - - $.plot.plugins.push({ - init: init, - options: options, - name: "pie", - version: "1.0" - }); -})(jQuery); - +/* +Flot plugin for rendering pie charts. The plugin assumes the data is +coming is as a single data value for each series, and each of those +values is a positive value or zero (negative numbers don't make +any sense and will cause strange effects). The data values do +NOT need to be passed in as percentage values because it +internally calculates the total and percentages. + +* Created by Brian Medendorp, June 2009 +* Updated November 2009 with contributions from: btburnett3, Anthony Aragues and Xavi Ivars + +* Changes: + 2009-10-22: lineJoin set to round + 2009-10-23: IE full circle fix, donut + 2009-11-11: Added basic hover from btburnett3 - does not work in IE, and center is off in Chrome and Opera + 2009-11-17: Added IE hover capability submitted by Anthony Aragues + 2009-11-18: Added bug fix submitted by Xavi Ivars (issues with arrays when other JS libraries are included as well) + + +Available options are: +series: { + pie: { + show: true/false + radius: 0-1 for percentage of fullsize, or a specified pixel length, or 'auto' + innerRadius: 0-1 for percentage of fullsize or a specified pixel length, for creating a donut effect + startAngle: 0-2 factor of PI used for starting angle (in radians) i.e 3/2 starts at the top, 0 and 2 have the same result + tilt: 0-1 for percentage to tilt the pie, where 1 is no tilt, and 0 is completely flat (nothing will show) + offset: { + top: integer value to move the pie up or down + left: integer value to move the pie left or right, or 'auto' + }, + stroke: { + color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#FFF') + width: integer pixel width of the stroke + }, + label: { + show: true/false, or 'auto' + formatter: a user-defined function that modifies the text/style of the label text + radius: 0-1 for percentage of fullsize, or a specified pixel length + background: { + color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#000') + opacity: 0-1 + }, + threshold: 0-1 for the percentage value at which to hide labels (if they're too small) + }, + combine: { + threshold: 0-1 for the percentage value at which to combine slices (if they're too small) + color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#CCC'), if null, the plugin will automatically use the color of the first slice to be combined + label: any text value of what the combined slice should be labeled + } + highlight: { + opacity: 0-1 + } + } +} + +More detail and specific examples can be found in the included HTML file. + +*/ + +(function ($) +{ + function init(plot) // this is the "body" of the plugin + { + var canvas = null; + var target = null; + var maxRadius = null; + var centerLeft = null; + var centerTop = null; + var total = 0; + var redraw = true; + var redrawAttempts = 10; + var shrink = 0.95; + var legendWidth = 0; + var processed = false; + var raw = false; + + // interactive variables + var highlights = []; + + // add hook to determine if pie plugin in enabled, and then perform necessary operations + plot.hooks.processOptions.push(checkPieEnabled); + plot.hooks.bindEvents.push(bindEvents); + + // check to see if the pie plugin is enabled + function checkPieEnabled(plot, options) + { + if (options.series.pie.show) + { + //disable grid + options.grid.show = false; + + // set labels.show + if (options.series.pie.label.show=='auto') + if (options.legend.show) + options.series.pie.label.show = false; + else + options.series.pie.label.show = true; + + // set radius + if (options.series.pie.radius=='auto') + if (options.series.pie.label.show) + options.series.pie.radius = 3/4; + else + options.series.pie.radius = 1; + + // ensure sane tilt + if (options.series.pie.tilt>1) + options.series.pie.tilt=1; + if (options.series.pie.tilt<0) + options.series.pie.tilt=0; + + // add processData hook to do transformations on the data + plot.hooks.processDatapoints.push(processDatapoints); + plot.hooks.drawOverlay.push(drawOverlay); + + // add draw hook + plot.hooks.draw.push(draw); + } + } + + // bind hoverable events + function bindEvents(plot, eventHolder) + { + var options = plot.getOptions(); + + if (options.series.pie.show && options.grid.hoverable) + eventHolder.unbind('mousemove').mousemove(onMouseMove); + + if (options.series.pie.show && options.grid.clickable) + eventHolder.unbind('click').click(onClick); + } + + + // debugging function that prints out an object + function alertObject(obj) + { + var msg = ''; + function traverse(obj, depth) + { + if (!depth) + depth = 0; + for (var i = 0; i < obj.length; ++i) + { + for (var j=0; j<depth; j++) + msg += '\t'; + + if( typeof obj[i] == "object") + { // its an object + msg += ''+i+':\n'; + traverse(obj[i], depth+1); + } + else + { // its a value + msg += ''+i+': '+obj[i]+'\n'; + } + } + } + traverse(obj); + alert(msg); + } + + function calcTotal(data) + { + for (var i = 0; i < data.length; ++i) + { + var