220 lines
6.8 KiB
JavaScript
220 lines
6.8 KiB
JavaScript
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//>>built
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define("dojox/charting/plot2d/Bubble", ["dojo/_base/lang", "dojo/_base/declare", "dojo/_base/array",
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"./Base", "./common", "dojox/lang/functional", "dojox/lang/functional/reversed",
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"dojox/lang/utils", "dojox/gfx/fx"],
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function(lang, declare, arr, Base, dc, df, dfr, du, fx){
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/*=====
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var Base = dojox.charting.plot2d.Base;
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=====*/
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var purgeGroup = dfr.lambda("item.purgeGroup()");
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return declare("dojox.charting.plot2d.Bubble", Base, {
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// summary:
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// A plot representing bubbles. Note that data for Bubbles requires 3 parameters,
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// in the form of: { x, y, size }, where size determines the size of the bubble.
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defaultParams: {
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hAxis: "x", // use a horizontal axis named "x"
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vAxis: "y", // use a vertical axis named "y"
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animate: null // animate bars into place
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},
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optionalParams: {
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// theme component
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stroke: {},
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outline: {},
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shadow: {},
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fill: {},
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font: "",
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fontColor: ""
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},
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constructor: function(chart, kwArgs){
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// summary:
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// Create a plot of bubbles.
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// chart: dojox.charting.Chart
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// The chart this plot belongs to.
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// kwArgs: dojox.charting.plot2d.__DefaultCtorArgs?
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// Optional keyword arguments object to help define plot parameters.
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this.opt = lang.clone(this.defaultParams);
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du.updateWithObject(this.opt, kwArgs);
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du.updateWithPattern(this.opt, kwArgs, this.optionalParams);
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this.series = [];
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this.hAxis = this.opt.hAxis;
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this.vAxis = this.opt.vAxis;
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this.animate = this.opt.animate;
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},
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// override the render so that we are plotting only circles.
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render: function(dim, offsets){
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// summary:
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// Run the calculations for any axes for this plot.
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// dim: Object
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// An object in the form of { width, height }
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// offsets: Object
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// An object of the form { l, r, t, b}.
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// returns: dojox.charting.plot2d.Bubble
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// A reference to this plot for functional chaining.
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if(this.zoom && !this.isDataDirty()){
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return this.performZoom(dim, offsets);
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}
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this.resetEvents();
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this.dirty = this.isDirty();
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if(this.dirty){
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arr.forEach(this.series, purgeGroup);
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this._eventSeries = {};
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this.cleanGroup();
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var s = this.group;
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df.forEachRev(this.series, function(item){ item.cleanGroup(s); });
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}
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var t = this.chart.theme,
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ht = this._hScaler.scaler.getTransformerFromModel(this._hScaler),
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vt = this._vScaler.scaler.getTransformerFromModel(this._vScaler),
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events = this.events();
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for(var i = this.series.length - 1; i >= 0; --i){
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var run = this.series[i];
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if(!this.dirty && !run.dirty){
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t.skip();
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this._reconnectEvents(run.name);
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continue;
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}
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run.cleanGroup();
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if(!run.data.length){
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run.dirty = false;
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t.skip();
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continue;
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}
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if(typeof run.data[0] == "number"){
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console.warn("dojox.charting.plot2d.Bubble: the data in the following series cannot be rendered as a bubble chart; ", run);
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continue;
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}
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var theme = t.next("circle", [this.opt, run]), s = run.group,
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points = arr.map(run.data, function(v, i){
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return v ? {
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x: ht(v.x) + offsets.l,
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y: dim.height - offsets.b - vt(v.y),
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radius: this._vScaler.bounds.scale * (v.size / 2)
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} : null;
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}, this);
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var frontCircles = null, outlineCircles = null, shadowCircles = null;
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// make shadows if needed
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if(theme.series.shadow){
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shadowCircles = arr.map(points, function(item){
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if(item !== null){
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var finalTheme = t.addMixin(theme, "circle", item, true),
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shadow = finalTheme.series.shadow;
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var shape = s.createCircle({
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cx: item.x + shadow.dx, cy: item.y + shadow.dy, r: item.radius
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}).setStroke(shadow).setFill(shadow.color);
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if(this.animate){
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this._animateBubble(shape, dim.height - offsets.b, item.radius);
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}
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return shape;
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}
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return null;
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}, this);
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if(shadowCircles.length){
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run.dyn.shadow = shadowCircles[shadowCircles.length - 1].getStroke();
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}
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}
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// make outlines if needed
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if(theme.series.outline){
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outlineCircles = arr.map(points, function(item){
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if(item !== null){
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var finalTheme = t.addMixin(theme, "circle", item, true),
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outline = dc.makeStroke(finalTheme.series.outline);
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outline.width = 2 * outline.width + theme.series.stroke.width;
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var shape = s.createCircle({
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cx: item.x, cy: item.y, r: item.radius
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}).setStroke(outline);
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if(this.animate){
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this._animateBubble(shape, dim.height - offsets.b, item.radius);
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}
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return shape;
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}
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return null;
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}, this);
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if(outlineCircles.length){
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run.dyn.outline = outlineCircles[outlineCircles.length - 1].getStroke();
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}
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}
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// run through the data and add the circles.
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frontCircles = arr.map(points, function(item){
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if(item !== null){
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var finalTheme = t.addMixin(theme, "circle", item, true),
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rect = {
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x: item.x - item.radius,
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y: item.y - item.radius,
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width: 2 * item.radius,
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height: 2 * item.radius
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};
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var specialFill = this._plotFill(finalTheme.series.fill, dim, offsets);
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specialFill = this._shapeFill(specialFill, rect);
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var shape = s.createCircle({
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cx: item.x, cy: item.y, r: item.radius
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}).setFill(specialFill).setStroke(finalTheme.series.stroke);
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if(this.animate){
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this._animateBubble(shape, dim.height - offsets.b, item.radius);
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}
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return shape;
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}
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return null;
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}, this);
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if(frontCircles.length){
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run.dyn.fill = frontCircles[frontCircles.length - 1].getFill();
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run.dyn.stroke = frontCircles[frontCircles.length - 1].getStroke();
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}
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if(events){
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var eventSeries = new Array(frontCircles.length);
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arr.forEach(frontCircles, function(s, i){
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if(s !== null){
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var o = {
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element: "circle",
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index: i,
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run: run,
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shape: s,
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outline: outlineCircles && outlineCircles[i] || null,
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shadow: shadowCircles && shadowCircles[i] || null,
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x: run.data[i].x,
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y: run.data[i].y,
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r: run.data[i].size / 2,
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cx: points[i].x,
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cy: points[i].y,
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cr: points[i].radius
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};
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this._connectEvents(o);
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eventSeries[i] = o;
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}
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}, this);
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this._eventSeries[run.name] = eventSeries;
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}else{
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delete this._eventSeries[run.name];
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}
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run.dirty = false;
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}
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this.dirty = false;
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return this; // dojox.charting.plot2d.Bubble
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},
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_animateBubble: function(shape, offset, size){
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fx.animateTransform(lang.delegate({
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shape: shape,
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duration: 1200,
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transform: [
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{name: "translate", start: [0, offset], end: [0, 0]},
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{name: "scale", start: [0, 1/size], end: [1, 1]},
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{name: "original"}
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]
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}, this.animate)).play();
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}
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});
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});
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