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

   1 if(!dojo._hasResource["dojox.charting.plot2d.Bars"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
   2 dojo._hasResource["dojox.charting.plot2d.Bars"] = true;
   3 dojo.provide("dojox.charting.plot2d.Bars");
   4
   5 dojo.require("dojox.charting.plot2d.common");
   6 dojo.require("dojox.charting.plot2d.Base");
   7
   8 dojo.require("dojox.lang.utils");
   9 dojo.require("dojox.lang.functional");
  10 dojo.require("dojox.lang.functional.reversed");
  11
  12 (function(){
  13         var df = dojox.lang.functional, du = dojox.lang.utils,
  14                 dc = dojox.charting.plot2d.common,
  15                 purgeGroup = df.lambda("item.purgeGroup()");
  16
  17         dojo.declare("dojox.charting.plot2d.Bars", dojox.charting.plot2d.Base, {
  18                 defaultParams: {
  19                         hAxis: "x",             // use a horizontal axis named "x"
  20                         vAxis: "y",             // use a vertical axis named "y"
  21                         gap:    0,              // gap between columns in pixels
  22                         shadows: null   // draw shadows
  23                 },
  24                 optionalParams: {},     // no optional parameters
  25
  26                 constructor: function(chart, kwArgs){
  27                         this.opt = dojo.clone(this.defaultParams);
  28                         du.updateWithObject(this.opt, kwArgs);
  29                         this.series = [];
  30                         this.hAxis = this.opt.hAxis;
  31                         this.vAxis = this.opt.vAxis;
  32                 },
  33
  34                 calculateAxes: function(dim){
  35                         var stats = dc.collectSimpleStats(this.series), t;
  36                         stats.hmin -= 0.5;
  37                         stats.hmax += 0.5;
  38                         t = stats.hmin, stats.hmin = stats.vmin, stats.vmin = t;
  39                         t = stats.hmax, stats.hmax = stats.vmax, stats.vmax = t;
  40                         this._calc(dim, stats);
  41                         return this;
  42                 },
  43                 render: function(dim, offsets){
  44                         if(this.dirty){
  45                                 dojo.forEach(this.series, purgeGroup);
  46                                 this.cleanGroup();
  47                                 var s = this.group;
  48                                 df.forEachRev(this.series, function(item){ item.cleanGroup(s); });
  49                         }
  50                         var t = this.chart.theme, color, stroke, fill, f,
  51                                 gap = this.opt.gap < this._vScaler.scale / 3 ? this.opt.gap : 0;
  52                         for(var i = this.series.length - 1; i >= 0; --i){
  53                                 var run = this.series[i];
  54                                 if(!this.dirty && !run.dirty){ continue; }
  55                                 run.cleanGroup();
  56                                 var s = run.group;
  57                                 if(!run.fill || !run.stroke){
  58                                         // need autogenerated color
  59                                         color = run.dyn.color = new dojo.Color(t.next("color"));
  60                                 }
  61                                 stroke = run.stroke ? run.stroke : dc.augmentStroke(t.series.stroke, color);
  62                                 fill = run.fill ? run.fill : dc.augmentFill(t.series.fill, color);
  63                                 var baseline = Math.max(0, this._hScaler.bounds.lower),
  64                                         xoff = offsets.l + this._hScaler.scale * (baseline - this._hScaler.bounds.lower),
  65                                         yoff = dim.height - offsets.b - this._vScaler.scale * (1.5 - this._vScaler.bounds.lower) + gap;
  66                                 for(var j = 0; j < run.data.length; ++j){
  67                                         var v = run.data[j],
  68                                                 width  = this._hScaler.scale * (v - baseline),
  69                                                 height = this._vScaler.scale - 2 * gap,
  70                                                 w = Math.abs(width);
  71                                         if(w >= 1 && height >= 1){
  72                                                 var shape = s.createRect({
  73                                                         x: xoff + (width < 0 ? width : 0),
  74                                                         y: yoff - this._vScaler.scale * j,
  75                                                         width: w, height: height
  76                                                 }).setFill(fill).setStroke(stroke);
  77                                                 run.dyn.fill   = shape.getFill();
  78                                                 run.dyn.stroke = shape.getStroke();
  79                                         }
  80                                 }
  81                                 run.dirty = false;
  82                         }
  83                         this.dirty = false;
  84                         return this;
  85                 }
  86         });
  87 })();
  88
  89 }