git.pond.sub.org Git - eow/blob - static/dojo-release-1.1.1/dojox/charting/plot2d/StackedBars.js

   1 if(!dojo._hasResource["dojox.charting.plot2d.StackedBars"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
   2 dojo._hasResource["dojox.charting.plot2d.StackedBars"] = true;
   3 dojo.provide("dojox.charting.plot2d.StackedBars");
   4
   5 dojo.require("dojox.charting.plot2d.common");
   6 dojo.require("dojox.charting.plot2d.Bars");
   7
   8 dojo.require("dojox.lang.functional");
   9 dojo.require("dojox.lang.functional.reversed");
  10
  11 (function(){
  12         var df = dojox.lang.functional, dc = dojox.charting.plot2d.common,
  13                 purgeGroup = df.lambda("item.purgeGroup()");
  14
  15         dojo.declare("dojox.charting.plot2d.StackedBars", dojox.charting.plot2d.Bars, {
  16                 calculateAxes: function(dim){
  17                         var stats = dc.collectStackedStats(this.series), t;
  18                         this._maxRunLength = stats.hmax;
  19                         stats.hmin -= 0.5;
  20                         stats.hmax += 0.5;
  21                         t = stats.hmin, stats.hmin = stats.vmin, stats.vmin = t;
  22                         t = stats.hmax, stats.hmax = stats.vmax, stats.vmax = t;
  23                         this._calc(dim, stats);
  24                         return this;
  25                 },
  26                 render: function(dim, offsets){
  27                         // stack all values
  28                         var acc = df.repeat(this._maxRunLength, "-> 0", 0);
  29                         for(var i = 0; i < this.series.length; ++i){
  30                                 var run = this.series[i];
  31                                 for(var j = 0; j < run.data.length; ++j){
  32                                         var v = run.data[j];
  33                                         if(isNaN(v)){ v = 0; }
  34                                         acc[j] += v;
  35                                 }
  36                         }
  37                         // draw runs in backwards
  38                         if(this.dirty){
  39                                 dojo.forEach(this.series, purgeGroup);
  40                                 this.cleanGroup();
  41                                 var s = this.group;
  42                                 df.forEachRev(this.series, function(item){ item.cleanGroup(s); });
  43                         }
  44                         var t = this.chart.theme, color, stroke, fill, f,
  45                                 gap = this.opt.gap < this._vScaler.scale / 3 ? this.opt.gap : 0;
  46                         for(var i = this.series.length - 1; i >= 0; --i){
  47                                 var run = this.series[i];
  48                                 if(!this.dirty && !run.dirty){ continue; }
  49                                 run.cleanGroup();
  50                                 var s = run.group;
  51                                 if(!run.fill || !run.stroke){
  52                                         // need autogenerated color
  53                                         color = run.dyn.color = new dojo.Color(t.next("color"));
  54                                 }
  55                                 stroke = run.stroke ? run.stroke : dc.augmentStroke(t.series.stroke, color);
  56                                 fill = run.fill ? run.fill : dc.augmentFill(t.series.fill, color);
  57                                 for(var j = 0; j < acc.length; ++j){
  58                                         var v = acc[j],
  59                                                 width  = this._hScaler.scale * (v - this._hScaler.bounds.lower),
  60                                                 height = this._vScaler.scale - 2 * gap;
  61                                         if(width >= 1 && height >= 1){
  62                                                 var shape = s.createRect({
  63                                                         x: offsets.l,
  64                                                         y: dim.height - offsets.b - this._vScaler.scale * (j + 1.5 - this._vScaler.bounds.lower) + gap,
  65                                                         width: width, height: height
  66                                                 }).setFill(fill).setStroke(stroke);
  67                                                 run.dyn.fill   = shape.getFill();
  68                                                 run.dyn.stroke = shape.getStroke();
  69                                         }
  70                                 }
  71                                 run.dirty = false;
  72                                 // update the accumulator
  73                                 for(var j = 0; j < run.data.length; ++j){
  74                                         var v = run.data[j];
  75                                         if(isNaN(v)){ v = 0; }
  76                                         acc[j] -= v;
  77                                 }
  78                         }
  79                         this.dirty = false;
  80                         return this;
  81                 }
  82         });
  83 })();
  84
  85 }