197 lines
6.3 KiB
JavaScript
197 lines
6.3 KiB
JavaScript
//>>built
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define("dojox/charting/plot2d/Bars", ["dojo/_base/kernel", "dojo/_base/lang", "dojo/_base/array", "dojo/_base/declare", "./Base", "./common",
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"dojox/gfx/fx", "dojox/lang/utils", "dojox/lang/functional", "dojox/lang/functional/reversed"],
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function(dojo, lang, arr, declare, Base, dc, fx, du, df, dfr){
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/*=====
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dojo.declare("dojox.charting.plot2d.__BarCtorArgs", dojox.charting.plot2d.__DefaultCtorArgs, {
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// summary:
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// Additional keyword arguments for bar charts.
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// minBarSize: Number?
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// The minimum size for a bar in pixels. Default is 1.
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minBarSize: 1,
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// maxBarSize: Number?
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// The maximum size for a bar in pixels. Default is 1.
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maxBarSize: 1,
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// enableCache: Boolean?
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// Whether the bars rect are cached from one rendering to another. This improves the rendering performance of
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// successive rendering but penalize the first rendering. Default false.
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enableCache: false
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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.Bars", Base, {
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// summary:
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// The plot object representing a bar chart (horizontal bars).
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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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gap: 0, // gap between columns in pixels
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animate: null, // animate bars into place
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enableCache: false
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},
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optionalParams: {
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minBarSize: 1, // minimal bar width in pixels
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maxBarSize: 1, // maximal bar width in pixels
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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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// The constructor for a bar chart.
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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.__BarCtorArgs?
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// An optional keyword arguments object to help define the plot.
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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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getSeriesStats: function(){
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// summary:
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// Calculate the min/max on all attached series in both directions.
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// returns: Object
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// {hmin, hmax, vmin, vmax} min/max in both directions.
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var stats = dc.collectSimpleStats(this.series), t;
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stats.hmin -= 0.5;
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stats.hmax += 0.5;
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t = stats.hmin, stats.hmin = stats.vmin, stats.vmin = t;
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t = stats.hmax, stats.hmax = stats.vmax, stats.vmax = t;
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return stats;
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},
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createRect: function(run, creator, params){
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var rect;
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if(this.opt.enableCache && run._rectFreePool.length > 0){
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rect = run._rectFreePool.pop();
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rect.setShape(params);
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// was cleared, add it back
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creator.add(rect);
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}else{
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rect = creator.createRect(params);
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}
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if(this.opt.enableCache){
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run._rectUsePool.push(rect);
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}
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return rect;
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},
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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.Bars
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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.dirty = this.isDirty();
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this.resetEvents();
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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, f, gap, height,
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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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baseline = Math.max(0, this._hScaler.bounds.lower),
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baselineWidth = ht(baseline),
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events = this.events();
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f = dc.calculateBarSize(this._vScaler.bounds.scale, this.opt);
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gap = f.gap;
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height = f.size;
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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(this.opt.enableCache){
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run._rectFreePool = (run._rectFreePool?run._rectFreePool:[]).concat(run._rectUsePool?run._rectUsePool:[]);
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run._rectUsePool = [];
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}
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var theme = t.next("bar", [this.opt, run]), s = run.group,
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eventSeries = new Array(run.data.length);
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for(var j = 0; j < run.data.length; ++j){
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var value = run.data[j];
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if(value !== null){
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var v = typeof value == "number" ? value : value.y,
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hv = ht(v),
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width = hv - baselineWidth,
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w = Math.abs(width),
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finalTheme = typeof value != "number" ?
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t.addMixin(theme, "bar", value, true) :
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t.post(theme, "bar");
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if(w >= 0 && height >= 1){
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var rect = {
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x: offsets.l + (v < baseline ? hv : baselineWidth),
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y: dim.height - offsets.b - vt(j + 1.5) + gap,
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width: w, height: height
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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 = this.createRect(run, s, rect).setFill(specialFill).setStroke(finalTheme.series.stroke);
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run.dyn.fill = shape.getFill();
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run.dyn.stroke = shape.getStroke();
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if(events){
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var o = {
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element: "bar",
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index: j,
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run: run,
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shape: shape,
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x: v,
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y: j + 1.5
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};
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this._connectEvents(o);
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eventSeries[j] = o;
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}
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if(this.animate){
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this._animateBar(shape, offsets.l + baselineWidth, -w);
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}
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}
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}
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}
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this._eventSeries[run.name] = eventSeries;
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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.Bars
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},
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_animateBar: function(shape, hoffset, hsize){
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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: [hoffset - (hoffset/hsize), 0], end: [0, 0]},
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{name: "scale", start: [1/hsize, 1], 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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