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+/*
+ Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
+ Available via Academic Free License >= 2.1 OR the modified BSD license.
+ see: http://dojotoolkit.org/license for details
+*/
+
+
+if(!dojo._hasResource["dojox.charting.plot2d.Bars"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox.charting.plot2d.Bars"] = true;
+dojo.provide("dojox.charting.plot2d.Bars");
+
+dojo.require("dojox.charting.plot2d.common");
+dojo.require("dojox.charting.plot2d.Base");
+dojo.require("dojox.gfx.fx");
+
+dojo.require("dojox.lang.utils");
+dojo.require("dojox.lang.functional");
+dojo.require("dojox.lang.functional.reversed");
+/*=====
+dojo.declare("dojox.charting.plot2d.__BarCtorArgs", dojox.charting.plot2d.__DefaultCtorArgs, {
+ // summary:
+ // Additional keyword arguments for bar charts.
+
+ // minBarSize: Number?
+ // The minimum size for a bar in pixels. Default is 1.
+ minBarSize: 1,
+
+ // maxBarSize: Number?
+ // The maximum size for a bar in pixels. Default is 1.
+ maxBarSize: 1
+});
+=====*/
+(function(){
+ var df = dojox.lang.functional, du = dojox.lang.utils,
+ dc = dojox.charting.plot2d.common,
+ purgeGroup = df.lambda("item.purgeGroup()");
+
+ dojo.declare("dojox.charting.plot2d.Bars", dojox.charting.plot2d.Base, {
+ // summary:
+ // The plot object representing a bar chart (horizontal bars).
+ defaultParams: {
+ hAxis: "x", // use a horizontal axis named "x"
+ vAxis: "y", // use a vertical axis named "y"
+ gap: 0, // gap between columns in pixels
+ animate: null // animate bars into place
+ },
+ optionalParams: {
+ minBarSize: 1, // minimal bar width in pixels
+ maxBarSize: 1, // maximal bar width in pixels
+ // theme component
+ stroke: {},
+ outline: {},
+ shadow: {},
+ fill: {},
+ font: "",
+ fontColor: ""
+ },
+
+ constructor: function(chart, kwArgs){
+ // summary:
+ // The constructor for a bar chart.
+ // chart: dojox.charting.Chart2D
+ // The chart this plot belongs to.
+ // kwArgs: dojox.charting.plot2d.__BarCtorArgs?
+ // An optional keyword arguments object to help define the plot.
+ this.opt = dojo.clone(this.defaultParams);
+ du.updateWithObject(this.opt, kwArgs);
+ du.updateWithPattern(this.opt, kwArgs, this.optionalParams);
+ this.series = [];
+ this.hAxis = this.opt.hAxis;
+ this.vAxis = this.opt.vAxis;
+ this.animate = this.opt.animate;
+ },
+
+ getSeriesStats: function(){
+ // summary:
+ // Calculate the min/max on all attached series in both directions.
+ // returns: Object
+ // {hmin, hmax, vmin, vmax} min/max in both directions.
+ var stats = dc.collectSimpleStats(this.series), t;
+ stats.hmin -= 0.5;
+ stats.hmax += 0.5;
+ t = stats.hmin, stats.hmin = stats.vmin, stats.vmin = t;
+ t = stats.hmax, stats.hmax = stats.vmax, stats.vmax = t;
+ return stats;
+ },
+
+ render: function(dim, offsets){
+ // summary:
+ // Run the calculations for any axes for this plot.
+ // dim: Object
+ // An object in the form of { width, height }
+ // offsets: Object
+ // An object of the form { l, r, t, b}.
+ // returns: dojox.charting.plot2d.Bars
+ // A reference to this plot for functional chaining.
+ if(this.zoom && !this.isDataDirty()){
+ return this.performZoom(dim, offsets);
+ }
+ this.dirty = this.isDirty();
+ this.resetEvents();
+ if(this.dirty){
+ dojo.forEach(this.series, purgeGroup);
+ this._eventSeries = {};
+ this.cleanGroup();
+ var s = this.group;
+ df.forEachRev(this.series, function(item){ item.cleanGroup(s); });
+ }
+ var t = this.chart.theme, f, gap, height,
+ ht = this._hScaler.scaler.getTransformerFromModel(this._hScaler),
+ vt = this._vScaler.scaler.getTransformerFromModel(this._vScaler),
+ baseline = Math.max(0, this._hScaler.bounds.lower),
+ baselineWidth = ht(baseline),
+ events = this.events();
+ f = dc.calculateBarSize(this._vScaler.bounds.scale, this.opt);
+ gap = f.gap;
+ height = f.size;
+ for(var i = this.series.length - 1; i >= 0; --i){
+ var run = this.series[i];
+ if(!this.dirty && !run.dirty){
+ t.skip();
+ this._reconnectEvents(run.name);
+ continue;
+ }
+ run.cleanGroup();
+ var theme = t.next("bar", [this.opt, run]), s = run.group,
+ eventSeries = new Array(run.data.length);
+ for(var j = 0; j < run.data.length; ++j){
+ var value = run.data[j];
+ if(value !== null){
+ var v = typeof value == "number" ? value : value.y,
+ hv = ht(v),
+ width = hv - baselineWidth,
+ w = Math.abs(width),
+ finalTheme = typeof value != "number" ?
+ t.addMixin(theme, "bar", value, true) :
+ t.post(theme, "bar");
+ if(w >= 1 && height >= 1){
+ var rect = {
+ x: offsets.l + (v < baseline ? hv : baselineWidth),
+ y: dim.height - offsets.b - vt(j + 1.5) + gap,
+ width: w, height: height
+ };
+ var specialFill = this._plotFill(finalTheme.series.fill, dim, offsets);
+ specialFill = this._shapeFill(specialFill, rect);
+ var shape = s.createRect(rect).setFill(specialFill).setStroke(finalTheme.series.stroke);
+ run.dyn.fill = shape.getFill();
+ run.dyn.stroke = shape.getStroke();
+ if(events){
+ var o = {
+ element: "bar",
+ index: j,
+ run: run,
+ shape: shape,
+ x: v,
+ y: j + 1.5
+ };
+ this._connectEvents(o);
+ eventSeries[j] = o;
+ }
+ if(this.animate){
+ this._animateBar(shape, offsets.l + baselineWidth, -w);
+ }
+ }
+ }
+ }
+ this._eventSeries[run.name] = eventSeries;
+ run.dirty = false;
+ }
+ this.dirty = false;
+ return this; // dojox.charting.plot2d.Bars
+ },
+ _animateBar: function(shape, hoffset, hsize){
+ dojox.gfx.fx.animateTransform(dojo.delegate({
+ shape: shape,
+ duration: 1200,
+ transform: [
+ {name: "translate", start: [hoffset - (hoffset/hsize), 0], end: [0, 0]},
+ {name: "scale", start: [1/hsize, 1], end: [1, 1]},
+ {name: "original"}
+ ]
+ }, this.animate)).play();
+ }
+ });
+})();
+
+}