Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/jfreechart/PolygonPlot.java @ 819:6925d18580c0
Added more Javadoc.
gnv-artifacts/trunk@905 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Tim Englich <tim.englich@intevation.de> |
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date | Mon, 12 Apr 2010 13:12:21 +0000 |
parents | 22c18083225e |
children | 05bf8534a35a |
rev | line source |
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422
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1 package de.intevation.gnv.jfreechart; |
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2 |
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3 import java.awt.AlphaComposite; |
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4 import java.awt.Composite; |
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5 import java.awt.Graphics2D; |
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6 import java.awt.Shape; |
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7 |
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8 import java.awt.geom.Point2D; |
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9 import java.awt.geom.Rectangle2D; |
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10 |
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11 import java.util.HashMap; |
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12 import java.util.Iterator; |
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13 import java.util.Map; |
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14 |
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15 import org.jfree.chart.axis.Axis; |
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16 import org.jfree.chart.axis.AxisCollection; |
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17 import org.jfree.chart.axis.AxisLocation; |
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18 import org.jfree.chart.axis.AxisSpace; |
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19 import org.jfree.chart.axis.AxisState; |
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20 import org.jfree.chart.axis.ValueAxis; |
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21 |
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22 import org.jfree.chart.plot.Plot; |
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23 import org.jfree.chart.plot.PlotOrientation; |
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24 import org.jfree.chart.plot.PlotRenderingInfo; |
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25 import org.jfree.chart.plot.PlotState; |
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26 |
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27 import org.jfree.data.Range; |
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28 |
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29 import org.jfree.ui.RectangleEdge; |
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30 import org.jfree.ui.RectangleInsets; |
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31 |
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32 import org.jfree.util.ObjectList; |
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33 |
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34 /** |
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35 * A class for plotting polygons into a 2D chart. This plot makes use of <code> |
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36 * PolygonRenderer</code>. |
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37 * |
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38 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> |
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39 */ |
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40 // TODO implement cloneable |
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41 public class PolygonPlot |
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42 extends Plot |
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43 { |
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44 public static final String PLOT_TYPE = "PolygonPlot"; |
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45 |
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46 public static final PlotOrientation DEFAULT_PLOT_ORIENTATION = |
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47 PlotOrientation.VERTICAL; |
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48 |
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49 private PolygonDataset dataset; |
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50 private transient PolygonRenderer renderer; |
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51 |
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52 private PlotOrientation orientation; |
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53 |
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54 private RectangleInsets axisOffset; |
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55 |
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56 private ObjectList domainAxisLocation; |
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57 private ObjectList rangeAxisLocation; |
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58 private ObjectList domainAxes; |
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59 private ObjectList rangeAxes; |
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60 |
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61 |
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62 /** |
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63 * Constructs a new PolygonPlot with a dataset and a renderer. |
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64 * |
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65 * @param dataset Dataset containing polygons. |
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66 * @param renderer The renderer used to draw polygons. |
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67 */ |
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68 public PolygonPlot(PolygonDataset dataset, PolygonRenderer renderer) { |
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69 this(dataset, renderer, null, null, PlotOrientation.HORIZONTAL); |
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70 } |
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71 |
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72 |
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73 /** |
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74 * @param dataset Dataset containing polygons. |
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75 * @param renderer The renderer used to draw polygons. |
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76 * @param orientation The orientation used for this plot. |
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77 */ |
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78 public PolygonPlot( |
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79 PolygonDataset dataset, |
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80 PolygonRenderer renderer, |
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81 PlotOrientation orientation |
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82 ) { |
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83 this(dataset, renderer, null, null, orientation); |
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84 } |
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85 |
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86 |
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87 /** |
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88 * @param dataset Dataset containing polygons. |
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89 * @param renderer The renderer used to draw polygons. |
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90 * @param domainAxis The x axis. |
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91 * @param rangeAxis The y axis. |
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92 * @param orientation The orientation used for this plot. |
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93 */ |
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94 public PolygonPlot( |
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95 PolygonDataset dataset, |
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96 PolygonRenderer renderer, |
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97 ValueAxis domainAxis, |
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98 ValueAxis rangeAxis, |
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99 PlotOrientation orientation |
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100 ) { |
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101 super(); |
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102 |
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103 this.dataset = dataset; |
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104 this.renderer = renderer; |
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105 this.domainAxes = new ObjectList(); |
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106 this.rangeAxes = new ObjectList(); |
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107 this.domainAxisLocation = new ObjectList(); |
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108 this.rangeAxisLocation = new ObjectList(); |
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109 this.axisOffset = RectangleInsets.ZERO_INSETS; |
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110 |
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111 if (orientation != null) |
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112 this.orientation = orientation; |
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113 else |
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114 this.orientation = DEFAULT_PLOT_ORIENTATION; |
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115 |
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116 if (domainAxis != null) { |
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117 this.domainAxes.set(0, domainAxis); |
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118 domainAxis.setPlot(this); |
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119 } |
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120 domainAxisLocation.set(0, AxisLocation.BOTTOM_OR_LEFT); |
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121 |
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122 if (rangeAxis != null) { |
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123 this.rangeAxes.set(0, rangeAxis); |
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124 rangeAxis.setPlot(this); |
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125 } |
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126 rangeAxisLocation.set(0, AxisLocation.BOTTOM_OR_LEFT); |
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127 |
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128 configureDomainAxis(); |
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129 configureRangeAxis(); |
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130 } |
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131 |
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132 |
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133 public void configureDomainAxis() { |
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134 // we just have 1 dataset |
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135 Range domainAxisRange = getDataset().getDomainBounds(); |
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136 |
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137 for (int i = 0; i < domainAxes.size(); i++) { |
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138 ValueAxis axis = (ValueAxis) domainAxes.get(i); |
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139 |
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140 if (axis != null) { |
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141 axis.configure(); |
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142 axis.setRange(domainAxisRange); |
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143 } |
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144 } |
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145 } |
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146 |
450
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147 public ValueAxis getDomainAxis() { |
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148 return getDomainAxis(0); |
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149 } |
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150 |
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151 public ValueAxis getDomainAxis(int index) { |
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152 return index < domainAxes.size() |
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153 ? (ValueAxis)domainAxes.get(index) |
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154 : null; |
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155 } |
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156 |
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157 public ValueAxis getRangeAxis() { |
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158 return getRangeAxis(0); |
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159 } |
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160 |
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161 public ValueAxis getRangeAxis(int index) { |
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162 return index < rangeAxes.size() |
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163 ? (ValueAxis)rangeAxes.get(index) |
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164 : null; |
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165 } |
422
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166 |
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167 public void configureRangeAxis() { |
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168 // we just have 1 dataset |
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169 Range rangeAxisRange = getDataset().getRangeBounds(); |
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170 |
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171 for (int i = 0; i < rangeAxes.size(); i++) { |
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172 ValueAxis axis = (ValueAxis) rangeAxes.get(i); |
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173 |
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174 if (axis != null) { |
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175 axis.configure(); |
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176 axis.setRange(rangeAxisRange); |
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177 } |
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178 } |
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179 } |
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180 |
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181 public PolygonDataset getDataset(){ |
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182 return this.dataset; |
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183 } |
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184 |
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185 public String getPlotType() { |
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186 return PLOT_TYPE; |
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187 } |
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188 |
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189 public void setDataset(PolygonDataset dataset) { |
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190 this.dataset = dataset; |
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191 } |
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192 |
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193 |
795
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194 /** |
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195 * This is the major method to draw the into a given Graphic2D object. |
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196 * |
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197 * @param g2 Graphics object where the plot is drawn into. |
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198 * @param area The bounds for drawing this plot. |
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199 * @param anchor An anchor point. |
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200 * @param parentState The plot state. |
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201 * @param info |
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202 */ |
422
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203 public void draw( |
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204 Graphics2D g2, |
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205 Rectangle2D area, |
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206 Point2D anchor, |
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207 PlotState parentState, |
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208 PlotRenderingInfo info |
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209 ) { |
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210 Graphics2D savedG2 = g2; |
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211 Rectangle2D savedDataArea = area; |
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212 |
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213 if (info != null) { |
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214 info.setPlotArea(area); |
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215 info.setDataArea(area); |
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216 } |
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217 |
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218 AxisSpace space = calculateAxisSpace(g2, area); |
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219 Rectangle2D dataArea = space.shrink(area, null); |
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220 |
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221 // draw background and outline |
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222 drawBackground(g2, area); |
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223 drawOutline(g2, area); |
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224 |
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225 Shape savedClip = g2.getClip(); |
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226 g2.clip(area); |
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227 |
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228 Composite originalComposite = g2.getComposite(); |
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229 g2.setComposite(AlphaComposite.getInstance( |
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230 AlphaComposite.SRC_OVER, |
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231 getForegroundAlpha() |
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232 )); |
778
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233 |
422
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234 // draw axis |
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235 drawAxes(g2, area, dataArea, info); |
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236 |
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237 if (!isEmptyOrNull(dataset)) { |
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238 // draw data |
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239 drawPolygons(savedG2, dataArea, info); |
450
20a480753ff9
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240 drawLabels(savedG2, dataArea, info); |
422
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241 } |
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242 |
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243 g2.setClip(savedClip); |
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244 g2.setComposite(originalComposite); |
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245 } |
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246 |
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247 |
795
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248 /** |
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249 * Method to draw the axis for this plot. |
803
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250 * |
795
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251 * @param g2 |
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252 * @param plotArea |
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253 * @param dataArea |
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254 * @param plotState |
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255 */ |
422
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256 private void drawAxes( |
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257 Graphics2D g2, |
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258 Rectangle2D plotArea, |
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259 Rectangle2D dataArea, |
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260 PlotRenderingInfo plotState |
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261 ) { |
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262 AxisCollection axisCollection = new AxisCollection(); |
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263 |
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264 for (int i = 0; i < domainAxes.size(); i++) { |
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265 ValueAxis axis = (ValueAxis) domainAxes.get(i); |
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266 if (axis != null) |
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267 axisCollection.add(axis, getDomainAxisEdge(i)); |
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268 } |
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269 |
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270 for (int i = 0; i < rangeAxes.size(); i++) { |
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271 ValueAxis axis = (ValueAxis) rangeAxes.get(i); |
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272 if (axis != null) |
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273 axisCollection.add(axis, getRangeAxisEdge(i)); |
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274 } |
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275 |
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276 Map axisStateMap = new HashMap(); |
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277 |
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278 // draw the top axes |
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279 double cursor = dataArea.getMinY() - this.axisOffset.calculateTopOutset( |
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280 dataArea.getHeight()); |
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281 Iterator iterator = axisCollection.getAxesAtTop().iterator(); |
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282 while (iterator.hasNext()) { |
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283 ValueAxis axis = (ValueAxis) iterator.next(); |
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284 AxisState info = axis.draw(g2, cursor, plotArea, dataArea, |
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285 RectangleEdge.TOP, plotState); |
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286 cursor = info.getCursor(); |
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287 axisStateMap.put(axis, info); |
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288 } |
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289 |
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290 // draw the bottom axes |
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291 cursor = dataArea.getMaxY() |
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292 + this.axisOffset.calculateBottomOutset(dataArea.getHeight()); |
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293 iterator = axisCollection.getAxesAtBottom().iterator(); |
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294 while (iterator.hasNext()) { |
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295 ValueAxis axis = (ValueAxis) iterator.next(); |
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296 AxisState info = axis.draw(g2, cursor, plotArea, dataArea, |
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297 RectangleEdge.BOTTOM, plotState); |
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298 cursor = info.getCursor(); |
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299 axisStateMap.put(axis, info); |
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300 } |
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301 |
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302 // draw the left axes |
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303 cursor = dataArea.getMinX() |
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304 - this.axisOffset.calculateLeftOutset(dataArea.getWidth()); |
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305 iterator = axisCollection.getAxesAtLeft().iterator(); |
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306 while (iterator.hasNext()) { |
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307 ValueAxis axis = (ValueAxis) iterator.next(); |
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308 AxisState info = axis.draw(g2, cursor, plotArea, dataArea, |
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309 RectangleEdge.LEFT, plotState); |
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310 cursor = info.getCursor(); |
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311 axisStateMap.put(axis, info); |
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312 } |
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313 |
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314 // draw the right axes |
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315 cursor = dataArea.getMaxX() |
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316 + this.axisOffset.calculateRightOutset(dataArea.getWidth()); |
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317 iterator = axisCollection.getAxesAtRight().iterator(); |
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318 while (iterator.hasNext()) { |
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319 ValueAxis axis = (ValueAxis) iterator.next(); |
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320 AxisState info = axis.draw(g2, cursor, plotArea, dataArea, |
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321 RectangleEdge.RIGHT, plotState); |
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322 cursor = info.getCursor(); |
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323 axisStateMap.put(axis, info); |
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324 } |
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325 } |
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326 |
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327 |
795
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
780
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|
328 /** |
cdade5005cba
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parents:
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329 * Put some labels at data items into the plot. Uses PolygonRenderer to do |
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parents:
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330 * this job. |
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parents:
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331 * |
cdade5005cba
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parents:
780
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332 * @param g2 |
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parents:
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333 * @param area |
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parents:
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334 * @param info |
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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335 */ |
450
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336 private void drawLabels( |
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337 Graphics2D g2, |
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338 Rectangle2D area, |
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339 PlotRenderingInfo info |
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340 ) { |
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341 renderer.drawLabels(g2, this, area, dataset); |
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342 } |
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parents:
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343 |
795
cdade5005cba
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
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344 |
cdade5005cba
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Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
780
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345 /** |
cdade5005cba
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parents:
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346 * Plot the polygons. Uses PolygonRenderer to do this job. |
803
feae2f9d6c6f
Removed trailing whitespace.
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parents:
795
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347 * |
795
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parents:
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348 * @param g2 |
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349 * @param area |
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350 * @param info |
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351 */ |
422
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352 private void drawPolygons( |
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353 Graphics2D g2, |
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354 Rectangle2D area, |
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355 PlotRenderingInfo info |
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356 ) { |
451
bc5901bb4525
Use JFreeCharts ValueAxis.valueToJava2D() to transform data values
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450
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357 renderer.drawPolygons(g2, this, area, dataset); |
422
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358 } |
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359 |
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360 |
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361 private AxisSpace calculateAxisSpace(Graphics2D g2, Rectangle2D plotArea) { |
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362 AxisSpace space = new AxisSpace(); |
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363 space = calculateRangeAxisSpace(g2, plotArea, space); |
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364 Rectangle2D tmpPlotArea = space.shrink(plotArea, null); |
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365 space = calculateDomainAxisSpace(g2, plotArea, space); |
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366 |
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367 return space; |
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368 } |
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369 |
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370 |
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371 private AxisSpace calculateDomainAxisSpace( |
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372 Graphics2D g2, |
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373 Rectangle2D plotArea, |
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374 AxisSpace space |
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|
375 ) { |
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376 if (space == null) |
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377 space = new AxisSpace(); |
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378 |
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379 for (int i = 0; i < domainAxes.size(); i++) { |
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380 Axis axis = (Axis) domainAxes.get(i); |
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381 |
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382 if (axis != null) { |
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383 RectangleEdge edge = getDomainAxisEdge(i); |
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384 space = axis.reserveSpace(g2, this, plotArea, edge, space); |
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385 } |
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|
386 } |
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387 |
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388 return space; |
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389 } |
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|
390 |
f426f55d4f7a
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391 |
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392 private AxisSpace calculateRangeAxisSpace( |
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393 Graphics2D g2, |
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394 Rectangle2D plotArea, |
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Added Ingo Weinzierl's special JFreeChart classes.
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|
395 AxisSpace space |
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parents:
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|
396 ) { |
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Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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|
397 if (space == null) |
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|
398 space = new AxisSpace(); |
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parents:
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|
399 |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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|
400 for (int i = 0; i < rangeAxes.size(); i++) { |
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parents:
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changeset
|
401 Axis axis = (Axis) rangeAxes.get(i); |
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parents:
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|
402 |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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changeset
|
403 if (axis != null) { |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff
changeset
|
404 RectangleEdge edge = getRangeAxisEdge(i); |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff
changeset
|
405 space = axis.reserveSpace(g2, this, plotArea, edge, space); |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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changeset
|
406 } |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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|
407 } |
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Added Ingo Weinzierl's special JFreeChart classes.
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changeset
|
408 |
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Added Ingo Weinzierl's special JFreeChart classes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
|
409 return space; |
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Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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|
410 } |
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Added Ingo Weinzierl's special JFreeChart classes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
411 |
795
cdade5005cba
Added javadoc in jfreechart package.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
780
diff
changeset
|
412 |
450
20a480753ff9
Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
446
diff
changeset
|
413 public RectangleEdge getDomainAxisEdge() { |
422
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parents:
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changeset
|
414 return Plot.resolveDomainAxisLocation( |
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parents:
diff
changeset
|
415 getDomainAxisLocation(), orientation |
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Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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changeset
|
416 ); |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff
changeset
|
417 } |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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changeset
|
418 |
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Added Ingo Weinzierl's special JFreeChart classes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
|
419 |
450
20a480753ff9
Render labels in vertical cross section charts.
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parents:
446
diff
changeset
|
420 public RectangleEdge getDomainAxisEdge(int idx) { |
422
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Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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changeset
|
421 AxisLocation location = getDomainAxisLocation(idx); |
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parents:
diff
changeset
|
422 RectangleEdge result = Plot.resolveDomainAxisLocation( |
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Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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changeset
|
423 location, orientation |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff
changeset
|
424 ); |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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changeset
|
425 |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff
changeset
|
426 if (result == null) |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff
changeset
|
427 result = RectangleEdge.opposite(getDomainAxisEdge()); |
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Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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|
428 |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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changeset
|
429 return result; |
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Added Ingo Weinzierl's special JFreeChart classes.
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parents:
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changeset
|
430 } |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff
changeset
|
431 |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
432 |
450
20a480753ff9
Render labels in vertical cross section charts.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
446
diff
changeset
|
433 public RectangleEdge getRangeAxisEdge() { |
422
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
434 return Plot.resolveRangeAxisLocation( |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
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parents:
diff
changeset
|
435 getRangeAxisLocation(), orientation |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
436 ); |
f426f55d4f7a
Added Ingo Weinzierl's special JFreeChart classes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
437 } |
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438 |
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439 |
450
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Render labels in vertical cross section charts.
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440 public RectangleEdge getRangeAxisEdge(int idx) { |
422
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441 AxisLocation location = getRangeAxisLocation(idx); |
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442 RectangleEdge result = Plot.resolveRangeAxisLocation( |
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443 location, |
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444 orientation |
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445 ); |
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446 |
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447 if (result == null) |
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448 result = RectangleEdge.opposite(getRangeAxisEdge()); |
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449 |
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450 return result; |
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451 } |
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452 |
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453 |
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454 public AxisLocation getDomainAxisLocation() { |
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455 return (AxisLocation) domainAxisLocation.get(0); |
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456 } |
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457 |
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458 |
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459 public AxisLocation getDomainAxisLocation(int idx) { |
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460 if (idx < domainAxisLocation.size()) |
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461 return (AxisLocation) domainAxisLocation.get(idx); |
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462 |
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463 return null; |
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464 } |
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465 |
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466 |
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467 public AxisLocation getRangeAxisLocation() { |
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468 return (AxisLocation) rangeAxisLocation.get(0); |
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469 } |
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470 |
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471 |
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472 public AxisLocation getRangeAxisLocation(int idx) { |
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473 if (idx < rangeAxisLocation.size()) |
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474 return (AxisLocation) rangeAxisLocation.get(idx); |
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475 |
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476 return null; |
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477 } |
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478 |
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479 |
795
cdade5005cba
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480 /** |
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481 * @return true, if dataset is null or if it does not contain any |
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482 * PolygonSeries, otherwise false. |
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483 */ |
422
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484 private boolean isEmptyOrNull(PolygonDataset dataset) { |
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485 if (dataset != null) { |
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486 int seriesCount = dataset.getSeriesCount(); |
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487 for (int s = 0; s < seriesCount; s++) { |
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488 PolygonSeries series = dataset.getSeries(s); |
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489 if (series.getItemCount() > 0) { |
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490 return false; |
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491 } |
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492 } |
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493 } |
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494 return true; |
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495 } |
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496 } |
795
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497 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |