1 | define(["dojo/_base/lang", "dojo/_base/array", "dojo/_base/declare", "dojo/has", "./CartesianBase", "./_PlotEvents", "./common", |
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2 | "dojox/lang/functional", "dojox/lang/functional/reversed", "dojox/lang/utils", "dojox/gfx/fx"], |
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3 | function(lang, arr, declare, has, CartesianBase, _PlotEvents, dc, df, dfr, du, fx){ |
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4 | |
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5 | var purgeGroup = dfr.lambda("item.purgeGroup()"); |
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6 | |
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7 | return declare("dojox.charting.plot2d.Columns", [CartesianBase, _PlotEvents], { |
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8 | // summary: |
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9 | // The plot object representing a column chart (vertical bars). |
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10 | defaultParams: { |
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11 | gap: 0, // gap between columns in pixels |
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12 | animate: null, // animate bars into place |
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13 | enableCache: false |
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14 | }, |
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15 | optionalParams: { |
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16 | minBarSize: 1, // minimal column width in pixels |
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17 | maxBarSize: 1, // maximal column width in pixels |
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18 | // theme component |
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19 | stroke: {}, |
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20 | outline: {}, |
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21 | shadow: {}, |
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22 | fill: {}, |
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23 | filter: {}, |
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24 | styleFunc: null, |
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25 | font: "", |
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26 | fontColor: "" |
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27 | }, |
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28 | |
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29 | constructor: function(chart, kwArgs){ |
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30 | // summary: |
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31 | // The constructor for a columns chart. |
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32 | // chart: dojox/charting/Chart |
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33 | // The chart this plot belongs to. |
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34 | // kwArgs: dojox.charting.plot2d.__BarCtorArgs? |
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35 | // An optional keyword arguments object to help define the plot. |
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36 | this.opt = lang.clone(lang.mixin(this.opt, this.defaultParams)); |
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37 | du.updateWithObject(this.opt, kwArgs); |
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38 | du.updateWithPattern(this.opt, kwArgs, this.optionalParams); |
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39 | this.animate = this.opt.animate; |
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40 | }, |
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41 | |
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42 | getSeriesStats: function(){ |
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43 | // summary: |
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44 | // Calculate the min/max on all attached series in both directions. |
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45 | // returns: Object |
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46 | // {hmin, hmax, vmin, vmax} min/max in both directions. |
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47 | var stats = dc.collectSimpleStats(this.series); |
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48 | stats.hmin -= 0.5; |
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49 | stats.hmax += 0.5; |
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50 | return stats; // Object |
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51 | }, |
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52 | |
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53 | createRect: function(run, creator, params){ |
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54 | var rect; |
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55 | if(this.opt.enableCache && run._rectFreePool.length > 0){ |
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56 | rect = run._rectFreePool.pop(); |
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57 | rect.setShape(params); |
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58 | // was cleared, add it back |
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59 | creator.add(rect); |
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60 | }else{ |
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61 | rect = creator.createRect(params); |
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62 | } |
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63 | if(this.opt.enableCache){ |
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64 | run._rectUsePool.push(rect); |
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65 | } |
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66 | return rect; |
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67 | }, |
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68 | |
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69 | render: function(dim, offsets){ |
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70 | // summary: |
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71 | // Run the calculations for any axes for this plot. |
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72 | // dim: Object |
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73 | // An object in the form of { width, height } |
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74 | // offsets: Object |
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75 | // An object of the form { l, r, t, b}. |
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76 | // returns: dojox/charting/plot2d/Columns |
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77 | // A reference to this plot for functional chaining. |
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78 | if(this.zoom && !this.isDataDirty()){ |
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79 | return this.performZoom(dim, offsets); |
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80 | } |
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81 | this.resetEvents(); |
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82 | this.dirty = this.isDirty(); |
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83 | var s; |
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84 | if(this.dirty){ |
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85 | arr.forEach(this.series, purgeGroup); |
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86 | this._eventSeries = {}; |
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87 | this.cleanGroup(); |
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88 | s = this.getGroup(); |
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89 | df.forEachRev(this.series, function(item){ item.cleanGroup(s); }); |
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90 | } |
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91 | var t = this.chart.theme, |
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92 | ht = this._hScaler.scaler.getTransformerFromModel(this._hScaler), |
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93 | vt = this._vScaler.scaler.getTransformerFromModel(this._vScaler), |
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94 | baseline = Math.max(0, this._vScaler.bounds.lower), |
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95 | baselineHeight = vt(baseline), |
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96 | events = this.events(); |
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97 | var bar = this.getBarProperties(); |
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98 | |
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99 | for(var i = this.series.length - 1; i >= 0; --i){ |
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100 | var run = this.series[i]; |
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101 | if(!this.dirty && !run.dirty){ |
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102 | t.skip(); |
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103 | this._reconnectEvents(run.name); |
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104 | continue; |
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105 | } |
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106 | run.cleanGroup(); |
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107 | if(this.opt.enableCache){ |
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108 | run._rectFreePool = (run._rectFreePool?run._rectFreePool:[]).concat(run._rectUsePool?run._rectUsePool:[]); |
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109 | run._rectUsePool = []; |
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110 | } |
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111 | var theme = t.next("column", [this.opt, run]), |
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112 | eventSeries = new Array(run.data.length); |
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113 | s = run.group; |
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114 | var indexed = arr.some(run.data, function(item){ |
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115 | return typeof item == "number" || (item && !item.hasOwnProperty("x")); |
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116 | }); |
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117 | // on indexed charts we can easily just interate from the first visible to the last visible |
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118 | // data point to save time |
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119 | var min = indexed?Math.max(0, Math.floor(this._hScaler.bounds.from - 1)):0; |
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120 | var max = indexed?Math.min(run.data.length, Math.ceil(this._hScaler.bounds.to)):run.data.length; |
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121 | for(var j = min; j < max; ++j){ |
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122 | var value = run.data[j]; |
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123 | if(value != null){ |
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124 | var val = this.getValue(value, j, i, indexed), |
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125 | vv = vt(val.y), |
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126 | h = Math.abs(vv - baselineHeight), |
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127 | finalTheme, |
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128 | sshape; |
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129 | |
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130 | if(this.opt.styleFunc || typeof value != "number"){ |
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131 | var tMixin = typeof value != "number" ? [value] : []; |
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132 | if(this.opt.styleFunc){ |
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133 | tMixin.push(this.opt.styleFunc(value)); |
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134 | } |
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135 | finalTheme = t.addMixin(theme, "column", tMixin, true); |
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136 | }else{ |
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137 | finalTheme = t.post(theme, "column"); |
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138 | } |
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139 | |
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140 | if(bar.width >= 1 && h >= 0){ |
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141 | var rect = { |
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142 | x: offsets.l + ht(val.x + 0.5) + bar.gap + bar.thickness * i, |
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143 | y: dim.height - offsets.b - (val.y > baseline ? vv : baselineHeight), |
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144 | width: bar.width, |
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145 | height: h |
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146 | }; |
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147 | if(finalTheme.series.shadow){ |
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148 | var srect = lang.clone(rect); |
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149 | srect.x += finalTheme.series.shadow.dx; |
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150 | srect.y += finalTheme.series.shadow.dy; |
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151 | sshape = this.createRect(run, s, srect).setFill(finalTheme.series.shadow.color).setStroke(finalTheme.series.shadow); |
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152 | if(this.animate){ |
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153 | this._animateColumn(sshape, dim.height - offsets.b + baselineHeight, h); |
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154 | } |
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155 | } |
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156 | |
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157 | var specialFill = this._plotFill(finalTheme.series.fill, dim, offsets); |
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158 | specialFill = this._shapeFill(specialFill, rect); |
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159 | var shape = this.createRect(run, s, rect).setFill(specialFill).setStroke(finalTheme.series.stroke); |
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160 | if(shape.setFilter && finalTheme.series.filter){ |
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161 | shape.setFilter(finalTheme.series.filter); |
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162 | } |
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163 | run.dyn.fill = shape.getFill(); |
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164 | run.dyn.stroke = shape.getStroke(); |
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165 | if(events){ |
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166 | var o = { |
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167 | element: "column", |
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168 | index: j, |
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169 | run: run, |
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170 | shape: shape, |
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171 | shadow: sshape, |
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172 | cx: val.x + 0.5, |
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173 | cy: val.y, |
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174 | x: indexed?j:run.data[j].x, |
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175 | y: indexed?run.data[j]:run.data[j].y |
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176 | }; |
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177 | this._connectEvents(o); |
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178 | eventSeries[j] = o; |
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179 | } |
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180 | // if val.py is here, this means we are stacking and we need to subtract previous |
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181 | // value to get the high in which we will lay out the label |
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182 | if(!isNaN(val.py) && val.py > baseline){ |
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183 | rect.height = vv - vt(val.py); |
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184 | } |
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185 | this.createLabel(s, value, rect, finalTheme); |
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186 | if(this.animate){ |
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187 | this._animateColumn(shape, dim.height - offsets.b - baselineHeight, h); |
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188 | } |
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189 | } |
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190 | } |
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191 | } |
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192 | this._eventSeries[run.name] = eventSeries; |
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193 | run.dirty = false; |
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194 | } |
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195 | this.dirty = false; |
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196 | // chart mirroring starts |
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197 | if(has("dojo-bidi")){ |
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198 | this._checkOrientation(this.group, dim, offsets); |
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199 | } |
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200 | // chart mirroring ends |
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201 | return this; // dojox/charting/plot2d/Columns |
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202 | }, |
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203 | getValue: function(value, j, seriesIndex, indexed){ |
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204 | var y,x; |
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205 | if(indexed){ |
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206 | if(typeof value == "number"){ |
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207 | y = value; |
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208 | }else{ |
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209 | y = value.y; |
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210 | } |
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211 | x = j; |
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212 | }else{ |
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213 | y = value.y; |
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214 | x = value.x - 1; |
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215 | } |
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216 | return { x: x, y: y }; |
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217 | }, |
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218 | getBarProperties: function(){ |
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219 | var f = dc.calculateBarSize(this._hScaler.bounds.scale, this.opt); |
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220 | return {gap: f.gap, width: f.size, thickness: 0}; |
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221 | }, |
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222 | _animateColumn: function(shape, voffset, vsize){ |
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223 | if(vsize==0){ |
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224 | vsize = 1; |
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225 | } |
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226 | fx.animateTransform(lang.delegate({ |
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227 | shape: shape, |
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228 | duration: 1200, |
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229 | transform: [ |
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230 | {name: "translate", start: [0, voffset - (voffset/vsize)], end: [0, 0]}, |
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231 | {name: "scale", start: [1, 1/vsize], end: [1, 1]}, |
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232 | {name: "original"} |
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233 | ] |
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234 | }, this.animate)).play(); |
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235 | } |
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236 | |
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237 | }); |
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238 | }); |
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