1 | define(["dojo/_base/lang", "dojo/_base/declare", "dojo/_base/connect", "dojo/has", |
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2 | "./Base", "../scaler/primitive", "dojox/gfx", "dojox/gfx/fx", "dojox/lang/utils"], |
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3 | function(lang, declare, hub, has, Base, primitive, gfx, fx, du){ |
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4 | /*===== |
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5 | declare("dojox.charting.plot2d.__CartesianCtorArgs", dojox.charting.plot2d.__PlotCtorArgs, { |
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6 | // hAxis: String? |
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7 | // The horizontal axis name. |
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8 | hAxis: "x", |
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9 | |
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10 | // vAxis: String? |
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11 | // The vertical axis name |
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12 | vAxis: "y", |
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13 | |
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14 | // labels: Boolean? |
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15 | // For plots that support labels, whether or not to draw labels for each data item. Default is false. |
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16 | labels: false, |
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17 | |
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18 | // fixed: Boolean? |
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19 | // Whether a fixed precision must be applied to data values for display. Default is true. |
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20 | fixed: true, |
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21 | |
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22 | // precision: Number? |
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23 | // The precision at which to round data values for display. Default is 0. |
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24 | precision: 1, |
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25 | |
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26 | // labelOffset: Number? |
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27 | // The amount in pixels by which to offset labels when using "outside" labelStyle. Default is 10. |
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28 | labelOffset: 10, |
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29 | |
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30 | // labelStyle: String? |
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31 | // Options as to where to draw labels. This must be either "inside" or "outside". By default |
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32 | // the labels are drawn "inside" the shape representing the data point (a column rectangle for a Columns plot |
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33 | // or a marker for a Line plot for instance). When "outside" is used the labels are drawn above the data point shape. |
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34 | labelStyle: "inside", |
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35 | |
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36 | // htmlLabels: Boolean? |
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37 | // Whether or not to use HTML to render slice labels. Default is true. |
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38 | htmlLabels: true, |
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39 | |
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40 | // omitLabels: Boolean? |
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41 | // Whether labels that do not fit in an item render are omitted or not. This applies only when labelStyle |
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42 | // is "inside". Default is false. |
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43 | omitLabels: true, |
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44 | |
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45 | // labelFunc: Function? |
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46 | // An optional function to use to compute label text. It takes precedence over |
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47 | // the default text when available. |
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48 | // | function labelFunc(value, fixed, precision) {} |
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49 | // `value` is the data value to display |
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50 | // `fixed` is true if fixed precision must be applied. |
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51 | // `precision` is the requested precision to be applied. |
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52 | labelFunc: null |
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53 | }); |
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54 | =====*/ |
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55 | |
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56 | return declare("dojox.charting.plot2d.CartesianBase", Base, { |
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57 | baseParams: { |
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58 | hAxis: "x", |
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59 | vAxis: "y", |
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60 | labels: false, |
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61 | labelOffset: 10, |
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62 | fixed: true, |
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63 | precision: 1, |
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64 | labelStyle: "inside", |
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65 | htmlLabels: true, // use HTML to draw labels |
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66 | omitLabels: true, |
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67 | labelFunc: null |
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68 | }, |
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69 | |
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70 | // summary: |
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71 | // Base class for cartesian plot types. |
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72 | constructor: function(chart, kwArgs){ |
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73 | // summary: |
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74 | // Create a cartesian base plot for cartesian charts. |
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75 | // chart: dojox/chart/Chart |
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76 | // The chart this plot belongs to. |
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77 | // kwArgs: dojox.charting.plot2d.__CartesianCtorArgs? |
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78 | // An optional arguments object to help define the plot. |
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79 | this.axes = ["hAxis", "vAxis"]; |
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80 | this.zoom = null; |
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81 | this.zoomQueue = []; // zooming action task queue |
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82 | this.lastWindow = {vscale: 1, hscale: 1, xoffset: 0, yoffset: 0}; |
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83 | this.hAxis = (kwArgs && kwArgs.hAxis) || "x"; |
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84 | this.vAxis = (kwArgs && kwArgs.vAxis) || "y"; |
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85 | this.series = []; |
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86 | this.opt = lang.clone(this.baseParams); |
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87 | du.updateWithObject(this.opt, kwArgs); |
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88 | }, |
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89 | clear: function(){ |
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90 | // summary: |
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91 | // Clear out all of the information tied to this plot. |
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92 | // returns: dojox/charting/plot2d/CartesianBase |
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93 | // A reference to this plot for functional chaining. |
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94 | this.inherited(arguments); |
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95 | this._hAxis = null; |
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96 | this._vAxis = null; |
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97 | return this; // dojox/charting/plot2d/CartesianBase |
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98 | }, |
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99 | cleanGroup: function(creator, noClip){ |
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100 | this.inherited(arguments); |
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101 | if(!noClip && this.chart._nativeClip){ |
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102 | var offsets = this.chart.offsets, dim = this.chart.dim; |
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103 | var w = Math.max(0, dim.width - offsets.l - offsets.r), |
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104 | h = Math.max(0, dim.height - offsets.t - offsets.b); |
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105 | this.group.setClip({ x: offsets.l, y: offsets.t, width: w, height: h }); |
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106 | if(!this._clippedGroup){ |
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107 | this._clippedGroup = this.group.createGroup(); |
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108 | } |
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109 | } |
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110 | }, |
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111 | purgeGroup: function(){ |
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112 | this.inherited(arguments); |
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113 | this._clippedGroup = null; |
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114 | }, |
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115 | getGroup: function(){ |
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116 | return this._clippedGroup || this.group; |
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117 | }, |
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118 | setAxis: function(axis){ |
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119 | // summary: |
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120 | // Set an axis for this plot. |
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121 | // axis: dojox/charting/axis2d/Base |
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122 | // The axis to set. |
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123 | // returns: dojox/charting/plot2d/CartesianBase |
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124 | // A reference to this plot for functional chaining. |
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125 | if(axis){ |
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126 | this[axis.vertical ? "_vAxis" : "_hAxis"] = axis; |
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127 | } |
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128 | return this; // dojox/charting/plot2d/CartesianBase |
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129 | }, |
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130 | toPage: function(coord){ |
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131 | // summary: |
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132 | // Compute page coordinates from plot axis data coordinates. |
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133 | // coord: Object? |
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134 | // The coordinates in plot axis data coordinate space. For cartesian charts that is of the following form: |
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135 | // `{ hAxisName: 50, vAxisName: 200 }` |
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136 | // If not provided return the transform method instead of the result of the transformation. |
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137 | // returns: Object |
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138 | // The resulting page pixel coordinates. That is of the following form: |
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139 | // `{ x: 50, y: 200 }` |
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140 | var ah = this._hAxis, av = this._vAxis, |
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141 | sh = ah.getScaler(), sv = av.getScaler(), |
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142 | th = sh.scaler.getTransformerFromModel(sh), |
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143 | tv = sv.scaler.getTransformerFromModel(sv), |
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144 | c = this.chart.getCoords(), |
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145 | o = this.chart.offsets, dim = this.chart.dim; |
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146 | var t = function(coord){ |
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147 | var r = {}; |
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148 | r.x = th(coord[ah.name]) + c.x + o.l; |
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149 | r.y = c.y + dim.height - o.b - tv(coord[av.name]); |
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150 | return r; |
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151 | }; |
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152 | // if no coord return the function so that we can capture the current transforms |
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153 | // and reuse them later on |
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154 | return coord?t(coord):t; // Object |
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155 | }, |
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156 | toData: function(coord){ |
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157 | // summary: |
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158 | // Compute plot axis data coordinates from page coordinates. |
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159 | // coord: Object |
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160 | // The pixel coordinate in page coordinate space. That is of the following form: |
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161 | // `{ x: 50, y: 200 }` |
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162 | // If not provided return the tranform method instead of the result of the transformation. |
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163 | // returns: Object |
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164 | // The resulting plot axis data coordinates. For cartesian charts that is of the following form: |
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165 | // `{ hAxisName: 50, vAxisName: 200 }` |
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166 | var ah = this._hAxis, av = this._vAxis, |
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167 | sh = ah.getScaler(), sv = av.getScaler(), |
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168 | th = sh.scaler.getTransformerFromPlot(sh), |
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169 | tv = sv.scaler.getTransformerFromPlot(sv), |
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170 | c = this.chart.getCoords(), |
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171 | o = this.chart.offsets, dim = this.chart.dim; |
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172 | var t = function(coord){ |
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173 | var r = {}; |
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174 | r[ah.name] = th(coord.x - c.x - o.l); |
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175 | r[av.name] = tv(c.y + dim.height - coord.y - o.b); |
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176 | return r; |
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177 | }; |
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178 | // if no coord return the function so that we can capture the current transforms |
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179 | // and reuse them later on |
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180 | return coord?t(coord):t; // Object |
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181 | }, |
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182 | isDirty: function(){ |
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183 | // summary: |
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184 | // Returns whether or not this plot needs to be rendered. |
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185 | // returns: Boolean |
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186 | // The state of the plot. |
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187 | return this.dirty || this._hAxis && this._hAxis.dirty || this._vAxis && this._vAxis.dirty; // Boolean |
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188 | }, |
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189 | createLabel: function(group, value, bbox, theme){ |
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190 | if(this.opt.labels){ |
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191 | var x, y, label = this.opt.labelFunc?this.opt.labelFunc.apply(this, [value, this.opt.fixed, this.opt.precision]): |
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192 | this._getLabel(isNaN(value.y)?value:value.y); |
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193 | if(this.opt.labelStyle == "inside"){ |
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194 | var lbox = gfx._base._getTextBox(label, { font: theme.series.font } ); |
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195 | x = bbox.x + bbox.width / 2; |
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196 | y = bbox.y + bbox.height / 2 + lbox.h / 4; |
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197 | if(lbox.w > bbox.width || lbox.h > bbox.height){ |
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198 | return; |
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199 | } |
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200 | |
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201 | }else{ |
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202 | x = bbox.x + bbox.width / 2; |
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203 | y = bbox.y - this.opt.labelOffset; |
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204 | } |
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205 | this.renderLabel(group, x, y, label, theme, this.opt.labelStyle == "inside"); |
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206 | } |
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207 | }, |
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208 | performZoom: function(dim, offsets){ |
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209 | // summary: |
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210 | // Create/alter any zooming windows on this plot. |
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211 | // dim: Object |
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212 | // An object of the form { width, height }. |
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213 | // offsets: Object |
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214 | // An object of the form { l, r, t, b }. |
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215 | // returns: dojox/charting/plot2d/CartesianBase |
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216 | // A reference to this plot for functional chaining. |
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217 | |
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218 | // get current zooming various |
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219 | var vs = this._vAxis.scale || 1, |
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220 | hs = this._hAxis.scale || 1, |
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221 | vOffset = dim.height - offsets.b, |
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222 | hBounds = this._hScaler.bounds, |
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223 | xOffset = (hBounds.from - hBounds.lower) * hBounds.scale, |
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224 | vBounds = this._vScaler.bounds, |
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225 | yOffset = (vBounds.from - vBounds.lower) * vBounds.scale, |
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226 | // get incremental zooming various |
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227 | rVScale = vs / this.lastWindow.vscale, |
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228 | rHScale = hs / this.lastWindow.hscale, |
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229 | rXOffset = (this.lastWindow.xoffset - xOffset)/ |
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230 | ((this.lastWindow.hscale == 1)? hs : this.lastWindow.hscale), |
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231 | rYOffset = (yOffset - this.lastWindow.yoffset)/ |
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232 | ((this.lastWindow.vscale == 1)? vs : this.lastWindow.vscale), |
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233 | |
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234 | shape = this.getGroup(), |
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235 | anim = fx.animateTransform(lang.delegate({ |
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236 | shape: shape, |
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237 | duration: 1200, |
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238 | transform:[ |
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239 | {name:"translate", start:[0, 0], end: [offsets.l * (1 - rHScale), vOffset * (1 - rVScale)]}, |
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240 | {name:"scale", start:[1, 1], end: [rHScale, rVScale]}, |
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241 | {name:"original"}, |
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242 | {name:"translate", start: [0, 0], end: [rXOffset, rYOffset]} |
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243 | ]}, this.zoom)); |
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244 | |
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245 | lang.mixin(this.lastWindow, {vscale: vs, hscale: hs, xoffset: xOffset, yoffset: yOffset}); |
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246 | //add anim to zooming action queue, |
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247 | //in order to avoid several zooming action happened at the same time |
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248 | this.zoomQueue.push(anim); |
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249 | //perform each anim one by one in zoomQueue |
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250 | hub.connect(anim, "onEnd", this, function(){ |
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251 | this.zoom = null; |
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252 | this.zoomQueue.shift(); |
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253 | if(this.zoomQueue.length > 0){ |
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254 | this.zoomQueue[0].play(); |
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255 | } |
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256 | }); |
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257 | if(this.zoomQueue.length == 1){ |
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258 | this.zoomQueue[0].play(); |
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259 | } |
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260 | return this; // dojox/charting/plot2d/CartesianBase |
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261 | }, |
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262 | initializeScalers: function(dim, stats){ |
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263 | // summary: |
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264 | // Initializes scalers using attached axes. |
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265 | // dim: Object |
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266 | // Size of a plot area in pixels as {width, height}. |
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267 | // stats: Object |
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268 | // Min/max of data in both directions as {hmin, hmax, vmin, vmax}. |
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269 | // returns: dojox/charting/plot2d/CartesianBase |
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270 | // A reference to this plot for functional chaining. |
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271 | if(this._hAxis){ |
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272 | if(!this._hAxis.initialized()){ |
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273 | this._hAxis.calculate(stats.hmin, stats.hmax, dim.width); |
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274 | } |
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275 | this._hScaler = this._hAxis.getScaler(); |
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276 | }else{ |
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277 | this._hScaler = primitive.buildScaler(stats.hmin, stats.hmax, dim.width); |
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278 | } |
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279 | if(this._vAxis){ |
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280 | if(!this._vAxis.initialized()){ |
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281 | this._vAxis.calculate(stats.vmin, stats.vmax, dim.height); |
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282 | } |
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283 | this._vScaler = this._vAxis.getScaler(); |
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284 | }else{ |
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285 | this._vScaler = primitive.buildScaler(stats.vmin, stats.vmax, dim.height); |
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286 | } |
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287 | return this; // dojox/charting/plot2d/CartesianBase |
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288 | } |
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289 | }); |
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290 | }); |
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