1 | define(["dojo/_base/lang", "dojo/_base/array", "dojo/_base/declare", "dojo/has", "./CartesianBase", "./_PlotEvents", "./common", |
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2 | "dojox/gfx/fx", "dojox/lang/utils", "dojox/lang/functional", "dojox/lang/functional/reversed"], |
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3 | function(lang, arr, declare, has, CartesianBase, _PlotEvents, dc, fx, du, df, dfr){ |
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4 | |
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5 | /*===== |
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6 | declare("dojox.charting.plot2d.__BarCtorArgs", dojox.charting.plot2d.__DefaultCtorArgs, { |
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7 | // summary: |
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8 | // Additional keyword arguments for bar charts. |
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9 | |
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10 | // minBarSize: Number? |
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11 | // The minimum size for a bar in pixels. Default is 1. |
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12 | minBarSize: 1, |
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13 | |
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14 | // maxBarSize: Number? |
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15 | // The maximum size for a bar in pixels. Default is 1. |
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16 | maxBarSize: 1, |
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17 | |
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18 | // stroke: dojox.gfx.Stroke? |
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19 | // An optional stroke to use for any series on the plot. |
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20 | stroke: {}, |
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21 | |
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22 | // outline: dojox.gfx.Stroke? |
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23 | // An optional stroke used to outline any series on the plot. |
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24 | outline: {}, |
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25 | |
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26 | // shadow: dojox.gfx.Stroke? |
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27 | // An optional stroke to use to draw any shadows for a series on a plot. |
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28 | shadow: {}, |
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29 | |
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30 | // fill: dojox.gfx.Fill? |
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31 | // Any fill to be used for elements on the plot. |
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32 | fill: {}, |
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33 | |
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34 | // filter: dojox.gfx.Filter? |
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35 | // An SVG filter to be used for elements on the plot. gfx SVG renderer must be used and dojox/gfx/svgext must |
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36 | // be required for this to work. |
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37 | filter: {}, |
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38 | |
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39 | // styleFunc: Function? |
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40 | // A function that returns a styling object for the a given data item. |
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41 | styleFunc: null, |
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42 | |
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43 | // font: String? |
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44 | // A font definition to be used for labels and other text-based elements on the plot. |
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45 | font: "", |
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46 | |
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47 | // fontColor: String|dojo.Color? |
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48 | // The color to be used for any text-based elements on the plot. |
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49 | fontColor: "", |
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50 | |
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51 | // enableCache: Boolean? |
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52 | // Whether the bars rect are cached from one rendering to another. This improves the rendering performance of |
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53 | // successive rendering but penalize the first rendering. Default false. |
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54 | enableCache: false |
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55 | }); |
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56 | =====*/ |
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57 | var purgeGroup = dfr.lambda("item.purgeGroup()"); |
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58 | |
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59 | return declare("dojox.charting.plot2d.Bars", [CartesianBase, _PlotEvents], { |
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60 | // summary: |
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61 | // The plot object representing a bar chart (horizontal bars). |
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62 | defaultParams: { |
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63 | gap: 0, // gap between columns in pixels |
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64 | animate: null, // animate bars into place |
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65 | enableCache: false |
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66 | }, |
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67 | optionalParams: { |
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68 | minBarSize: 1, // minimal bar width in pixels |
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69 | maxBarSize: 1, // maximal bar width in pixels |
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70 | // theme component |
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71 | stroke: {}, |
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72 | outline: {}, |
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73 | shadow: {}, |
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74 | fill: {}, |
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75 | filter: {}, |
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76 | styleFunc: null, |
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77 | font: "", |
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78 | fontColor: "" |
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79 | }, |
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80 | |
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81 | constructor: function(chart, kwArgs){ |
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82 | // summary: |
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83 | // The constructor for a bar chart. |
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84 | // chart: dojox/charting/Chart |
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85 | // The chart this plot belongs to. |
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86 | // kwArgs: dojox.charting.plot2d.__BarCtorArgs? |
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87 | // An optional keyword arguments object to help define the plot. |
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88 | this.opt = lang.clone(lang.mixin(this.opt, this.defaultParams)); |
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89 | du.updateWithObject(this.opt, kwArgs); |
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90 | du.updateWithPattern(this.opt, kwArgs, this.optionalParams); |
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91 | this.animate = this.opt.animate; |
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92 | }, |
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93 | |
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94 | getSeriesStats: function(){ |
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95 | // summary: |
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96 | // Calculate the min/max on all attached series in both directions. |
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97 | // returns: Object |
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98 | // {hmin, hmax, vmin, vmax} min/max in both directions. |
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99 | var stats = dc.collectSimpleStats(this.series), t; |
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100 | stats.hmin -= 0.5; |
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101 | stats.hmax += 0.5; |
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102 | t = stats.hmin, stats.hmin = stats.vmin, stats.vmin = t; |
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103 | t = stats.hmax, stats.hmax = stats.vmax, stats.vmax = t; |
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104 | return stats; // Object |
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105 | }, |
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106 | |
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107 | createRect: function(run, creator, params){ |
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108 | var rect; |
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109 | if(this.opt.enableCache && run._rectFreePool.length > 0){ |
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110 | rect = run._rectFreePool.pop(); |
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111 | rect.setShape(params); |
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112 | // was cleared, add it back |
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113 | creator.add(rect); |
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114 | }else{ |
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115 | rect = creator.createRect(params); |
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116 | } |
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117 | if(this.opt.enableCache){ |
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118 | run._rectUsePool.push(rect); |
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119 | } |
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120 | return rect; |
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121 | }, |
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122 | |
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123 | createLabel: function(group, value, bbox, theme){ |
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124 | if(this.opt.labels && this.opt.labelStyle == "outside"){ |
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125 | var y = bbox.y + bbox.height / 2; |
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126 | var x = bbox.x + bbox.width + this.opt.labelOffset; |
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127 | this.renderLabel(group, x, y, this._getLabel(isNaN(value.y)?value:value.y), theme, "start"); |
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128 | }else{ |
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129 | this.inherited(arguments); |
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130 | } |
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131 | }, |
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132 | |
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133 | render: function(dim, offsets){ |
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134 | // summary: |
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135 | // Run the calculations for any axes for this plot. |
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136 | // dim: Object |
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137 | // An object in the form of { width, height } |
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138 | // offsets: Object |
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139 | // An object of the form { l, r, t, b}. |
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140 | // returns: dojox/charting/plot2d/Bars |
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141 | // A reference to this plot for functional chaining. |
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142 | if(this.zoom && !this.isDataDirty()){ |
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143 | return this.performZoom(dim, offsets); // dojox/charting/plot2d/Bars |
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144 | } |
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145 | this.dirty = this.isDirty(); |
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146 | this.resetEvents(); |
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147 | var s; |
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148 | if(this.dirty){ |
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149 | arr.forEach(this.series, purgeGroup); |
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150 | this._eventSeries = {}; |
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151 | this.cleanGroup(); |
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152 | s = this.getGroup(); |
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153 | df.forEachRev(this.series, function(item){ item.cleanGroup(s); }); |
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154 | } |
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155 | var t = this.chart.theme, |
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156 | ht = this._hScaler.scaler.getTransformerFromModel(this._hScaler), |
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157 | vt = this._vScaler.scaler.getTransformerFromModel(this._vScaler), |
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158 | baseline = Math.max(0, this._hScaler.bounds.lower), |
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159 | baselineWidth = ht(baseline), |
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160 | events = this.events(); |
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161 | var bar = this.getBarProperties(); |
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162 | |
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163 | for(var i = this.series.length - 1; i >= 0; --i){ |
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164 | var run = this.series[i]; |
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165 | if(!this.dirty && !run.dirty){ |
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166 | t.skip(); |
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167 | this._reconnectEvents(run.name); |
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168 | continue; |
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169 | } |
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170 | run.cleanGroup(); |
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171 | if(this.opt.enableCache){ |
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172 | run._rectFreePool = (run._rectFreePool?run._rectFreePool:[]).concat(run._rectUsePool?run._rectUsePool:[]); |
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173 | run._rectUsePool = []; |
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174 | } |
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175 | var theme = t.next("bar", [this.opt, run]), |
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176 | eventSeries = new Array(run.data.length); |
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177 | s = run.group; |
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178 | var indexed = arr.some(run.data, function(item){ |
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179 | return typeof item == "number" || (item && !item.hasOwnProperty("x")); |
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180 | }); |
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181 | // on indexed charts we can easily just interate from the first visible to the last visible |
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182 | // data point to save time |
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183 | var min = indexed?Math.max(0, Math.floor(this._vScaler.bounds.from - 1)):0; |
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184 | var max = indexed?Math.min(run.data.length, Math.ceil(this._vScaler.bounds.to)):run.data.length; |
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185 | for(var j = min; j < max; ++j){ |
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186 | var value = run.data[j]; |
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187 | if(value != null){ |
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188 | var val = this.getValue(value, j, i, indexed), |
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189 | hv = ht(val.y), |
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190 | w = Math.abs(hv - baselineWidth), |
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191 | finalTheme, |
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192 | sshape; |
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193 | if(this.opt.styleFunc || typeof value != "number"){ |
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194 | var tMixin = typeof value != "number" ? [value] : []; |
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195 | if(this.opt.styleFunc){ |
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196 | tMixin.push(this.opt.styleFunc(value)); |
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197 | } |
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198 | finalTheme = t.addMixin(theme, "bar", tMixin, true); |
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199 | }else{ |
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200 | finalTheme = t.post(theme, "bar"); |
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201 | } |
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202 | if(w >= 0 && bar.height >= 1){ |
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203 | var rect = { |
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204 | x: offsets.l + (val.y < baseline ? hv : baselineWidth), |
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205 | y: dim.height - offsets.b - vt(val.x + 1.5) + bar.gap + bar.thickness * (this.series.length - i - 1), |
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206 | width: w, |
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207 | height: bar.height |
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208 | }; |
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209 | if(finalTheme.series.shadow){ |
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210 | var srect = lang.clone(rect); |
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211 | srect.x += finalTheme.series.shadow.dx; |
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212 | srect.y += finalTheme.series.shadow.dy; |
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213 | sshape = this.createRect(run, s, srect).setFill(finalTheme.series.shadow.color).setStroke(finalTheme.series.shadow); |
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214 | if(this.animate){ |
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215 | this._animateBar(sshape, offsets.l + baselineWidth, -w); |
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216 | } |
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217 | } |
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218 | var specialFill = this._plotFill(finalTheme.series.fill, dim, offsets); |
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219 | specialFill = this._shapeFill(specialFill, rect); |
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220 | var shape = this.createRect(run, s, rect).setFill(specialFill).setStroke(finalTheme.series.stroke); |
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221 | if(shape.setFilter && finalTheme.series.filter){ |
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222 | shape.setFilter(finalTheme.series.filter); |
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223 | } |
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224 | run.dyn.fill = shape.getFill(); |
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225 | run.dyn.stroke = shape.getStroke(); |
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226 | if(events){ |
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227 | var o = { |
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228 | element: "bar", |
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229 | index: j, |
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230 | run: run, |
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231 | shape: shape, |
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232 | shadow: sshape, |
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233 | cx: val.y, |
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234 | cy: val.x + 1.5, |
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235 | x: indexed?j:run.data[j].x, |
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236 | y: indexed?run.data[j]:run.data[j].y |
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237 | }; |
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238 | this._connectEvents(o); |
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239 | eventSeries[j] = o; |
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240 | } |
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241 | // if val.py is here, this means we are stacking and we need to subtract previous |
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242 | // value to get the high in which we will lay out the label |
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243 | if(!isNaN(val.py) && val.py > baseline){ |
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244 | rect.x += ht(val.py); |
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245 | rect.width -= ht(val.py); |
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246 | } |
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247 | this.createLabel(s, value, rect, finalTheme); |
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248 | if(this.animate){ |
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249 | this._animateBar(shape, offsets.l + baselineWidth, -w); |
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250 | } |
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251 | } |
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252 | } |
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253 | } |
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254 | this._eventSeries[run.name] = eventSeries; |
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255 | run.dirty = false; |
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256 | } |
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257 | this.dirty = false; |
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258 | // chart mirroring starts |
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259 | if(has("dojo-bidi")){ |
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260 | this._checkOrientation(this.group, dim, offsets); |
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261 | } |
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262 | // chart mirroring ends |
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263 | return this; // dojox/charting/plot2d/Bars |
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264 | }, |
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265 | getValue: function(value, j, seriesIndex, indexed){ |
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266 | var y, x; |
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267 | if(indexed){ |
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268 | if(typeof value == "number"){ |
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269 | y = value; |
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270 | }else{ |
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271 | y = value.y; |
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272 | } |
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273 | x = j; |
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274 | }else{ |
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275 | y = value.y; |
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276 | x = value.x -1; |
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277 | } |
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278 | return {y:y, x:x}; |
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279 | }, |
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280 | getBarProperties: function(){ |
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281 | var f = dc.calculateBarSize(this._vScaler.bounds.scale, this.opt); |
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282 | return {gap: f.gap, height: f.size, thickness: 0}; |
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283 | }, |
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284 | _animateBar: function(shape, hoffset, hsize){ |
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285 | if(hsize==0){ |
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286 | hsize = 1; |
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287 | } |
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288 | fx.animateTransform(lang.delegate({ |
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289 | shape: shape, |
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290 | duration: 1200, |
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291 | transform: [ |
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292 | {name: "translate", start: [hoffset - (hoffset/hsize), 0], end: [0, 0]}, |
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293 | {name: "scale", start: [1/hsize, 1], end: [1, 1]}, |
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294 | {name: "original"} |
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295 | ] |
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296 | }, this.animate)).play(); |
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297 | } |
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298 | }); |
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299 | }); |
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