Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/chart/VerticalCrossSectionChart.java @ 804:9058c08eac3a

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Added more Javadoc in some classes of state.profile. gnv-artifacts/trunk@886 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 08 Apr 2010 10:10:04 +0000
parents feae2f9d6c6f
children 3f447e92024a
rev   line source
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1 package de.intevation.gnv.chart;
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2
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3 import de.intevation.gnv.jfreechart.PolygonDataset;
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4 import de.intevation.gnv.jfreechart.PolygonPlot;
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5 import de.intevation.gnv.jfreechart.PolygonRenderer;
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6 import de.intevation.gnv.jfreechart.PolygonSeries;
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7
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8 import de.intevation.gnv.math.AttributedXYColumns;
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9
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10 import de.intevation.gnv.raster.Palette;
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11
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12 import java.awt.Color;
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13 import java.awt.Paint;
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15 import java.text.NumberFormat;
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16
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17 import java.util.HashSet;
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18 import java.util.Locale;
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19 import java.util.Map;
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20
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21 import org.jfree.chart.JFreeChart;
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23 import org.jfree.chart.axis.NumberAxis;
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24 import org.jfree.chart.axis.SymbolAxis;
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25 import org.jfree.chart.axis.ValueAxis;
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26
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27 import org.jfree.chart.plot.PlotOrientation;
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29 import org.jfree.chart.renderer.LookupPaintScale;
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30
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31 import org.jfree.chart.title.PaintScaleLegend;
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32 import org.jfree.chart.title.TextTitle;
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33
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34 import org.jfree.ui.RectangleEdge;
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35 import org.jfree.ui.RectangleInsets;
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36
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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 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
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40 */
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41 public class VerticalCrossSectionChart
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42 implements Chart
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43 {
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44 /**
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45 * Lookup class for retrieving a color which corresponds to a specific
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46 * integer value.
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47 */
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48 public static final class PalettePaintLookup
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49 implements PolygonRenderer.PaintLookup
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50 {
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51 /**
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52 * Object storing information about value ranges and its coresponding
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53 * colors and descriptions.
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54 */
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55 private Palette palette;
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56
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57 /**
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58 * Map containing some special <code>Paint</code> like ground fillcolor.
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59 */
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60 private Map<Integer, Paint> special;
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61
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62 /**
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63 * Constructor
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64 *
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65 * @param palette See {@link #palette}
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66 */
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67 public PalettePaintLookup(Palette palette) {
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68 this(palette, null);
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69 }
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70
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71 /**
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72 * Constructor
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73 *
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74 * @param palette See {@link #palette}
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75 * @param special See {@link #special}
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76 */
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77 public PalettePaintLookup(
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78 Palette palette,
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79 Map<Integer, Paint> special
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80 ) {
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81 this.palette = palette;
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82 this.special = special;
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83 }
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84
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85 /**
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86 * @param index Index of a <code>Paint</code>
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87 *
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88 * @return <code>Paint</code> object for a given index.
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89 */
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90 public Paint getPaint(int index) {
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91 if (special != null) {
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92 Paint paint = special.get(index);
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93 if (paint != null) {
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94 return paint;
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95 }
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96 }
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97 return index < 0
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98 ? Color.black
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99 : palette.getColor(index);
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100 }
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101 } // class PalettePaintLookup
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102
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103 /**
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104 * This class is used to turn labels which represent a number into a
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105 * specific format.
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106 */
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107 public static class LocalizedLabelGenerator
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108 extends PolygonRenderer.DefaultLabelGenerator
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109 {
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110 /**
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111 * <code>NumberFormat</code> which is used to turn a number into a
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112 * specific format.
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113 */
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114 protected NumberFormat format;
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115
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116 /**
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117 * Constructor
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118 */
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119 public LocalizedLabelGenerator() {
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120 }
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121
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122 /**
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123 * Constructor
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124 *
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125 * @param format See {@link #format}
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126 */
450
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127 public LocalizedLabelGenerator(NumberFormat format) {
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128 this.format = format;
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129 }
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130
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131 /**
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132 * If label is a <code>Number</code>, it is turned into a format
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133 * specified by {@link #format}.
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134 *
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135 * @param label Label to format.
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136 *
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137 * @return String representation of label.
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138 */
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139 @Override
450
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140 protected String toString(Object label) {
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141 return label instanceof Number
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142 ? format.format(((Number)label).doubleValue())
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143 : super.toString(label);
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144 }
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145 } // class LocalizedLabelGenerator
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146
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147 /**
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148 * JFreeChart object stored at this place after chart creation.
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149 */
446
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150 protected JFreeChart chart;
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151
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152 /**
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153 * Stores {@link de.intevation.gnv.jfreechart.PolygonDataset} which is used
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154 * to create a vertical cross chart.
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155 */
446
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156 protected AttributedXYColumns columns;
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157
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158 /**
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159 * Map which contains colors to fill polygons draw by this chart.
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160 */
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161 protected Map<Integer, Paint> special;
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162
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163 /**
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164 * Object used to map value intervals to specific colors and descriptions.
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165 */
446
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166 protected Palette palette;
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167
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168 /**
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169 * Locale object used for i18n support.
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170 */
446
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171 protected Locale locale;
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172
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173 /**
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174 * Labels for decorating the chart.
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175 */
492
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176 protected ChartLabels labels;
446
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177
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178 /**
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179 * Default Constructor
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180 */
446
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181 public VerticalCrossSectionChart() {
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182 }
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183
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184 /**
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185 * Constructor for VerticalCrossSectionChart creation.
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186 *
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187 * @param columns See {@link #columns}
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188 * @param palette See {@link #palette}
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189 * @param locale See {@link #locale}
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190 * @param labels See {@link #labels}
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191 */
446
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192 public VerticalCrossSectionChart(
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193 AttributedXYColumns columns,
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194 Palette palette,
492
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195 Locale locale,
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196 ChartLabels labels
446
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197 ) {
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198 this(columns, palette, null, locale, labels);
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199 }
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200
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201 /**
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202 * Constructor for VerticalCrossSectionChart creation.
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203 *
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204 * @param columns See {@link #columns}
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205 * @param palette See {@link #palette}
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206 * @param special See {@link #special}
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207 * @param locale See {@link #locale}
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208 * @param labels See {@link #labels}
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209 */
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210 public VerticalCrossSectionChart(
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211 AttributedXYColumns columns,
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212 Palette palette,
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213 Map<Integer, Paint> special,
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214 Locale locale,
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215 ChartLabels labels
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216 ) {
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217 this.columns = columns;
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218 this.palette = palette;
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219 this.special = special;
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220 this.locale = locale;
492
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221 this.labels = labels;
446
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222 }
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223
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224 /**
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225 * This method is used to create a JFreeChart from this object. A 2D plot is
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226 * drawn and a legend panel is created containing each value range.
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227 *
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228 * @return JFreeChart object
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229 */
446
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230 protected JFreeChart createChart() {
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231
492
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232 boolean legendB = false;
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233 boolean tooltips = false;
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234 boolean urls = false;
446
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235
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236 PlotOrientation po = PlotOrientation.HORIZONTAL;
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237 PolygonDataset data = columns.getPolygonDataset();
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238
449
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239 HashSet<Integer> usedColors = new HashSet<Integer>();
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240
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241 for (int i = data.getSeriesCount()-1; i >= 0; --i) {
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242 PolygonSeries ps = data.getSeries(i);
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243 Integer fill = (Integer)ps.getAttribute("fill");
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244 if (fill != null
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245 && (special != null && !special.containsKey(fill))) {
449
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246 usedColors.add(fill);
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247 }
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248 }
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249
450
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250 NumberFormat format = NumberFormat.getInstance(locale);
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251 format.setMinimumFractionDigits(0);
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252 format.setMaximumFractionDigits(2);
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253
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254 PolygonRenderer renderer = new PolygonRenderer(
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255 new PalettePaintLookup(palette, special),
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256 new LocalizedLabelGenerator(format));
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257
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258 ValueAxis domainAxis = new NumberAxis(this.labels.getDomainAxisLabel());
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259 ValueAxis rangeAxis = new NumberAxis(this.labels.getRangeAxisLabel());
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260
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261 PolygonPlot plot = new PolygonPlot(
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262 data,
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263 renderer,
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264 domainAxis,
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265 rangeAxis,
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266 null);
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267
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268 plot.setOutlinePaint(Color.WHITE);
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269
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270 String [] labels = new String[usedColors.size()];
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271
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272 int colors = palette.getSize();
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273 LookupPaintScale lookupPaint =
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274 new LookupPaintScale(-0.5d, labels.length-0.5d, Color.white);
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275
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276 Color color = null;
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277
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278 for (int i = 0, j = labels.length-1; i < colors && j >= 0; i++) {
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279 if (usedColors.contains(i)) {
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280 Palette.Entry entry = palette.getEntryByIndex(i);
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281 color = entry.getColor();
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282 labels[j] = entry.getDescription();
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283 lookupPaint.add(j-0.5d, color);
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284 --j;
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285 }
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286 }
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287
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288 JFreeChart chart = new JFreeChart(
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289 this.labels.getTitle(),
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290 JFreeChart.DEFAULT_TITLE_FONT,
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291 plot,
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292 legendB);
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293
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294 chart.removeLegend();
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295 chart.addSubtitle(new TextTitle(this.labels.getSubtitle()));
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296
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297 SymbolAxis scale = new SymbolAxis(this.labels.getParameterName(), labels);
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298 scale.setRange(-1.5d, labels.length+0.5d);
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299 scale.setGridBandsVisible(false);
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300 scale.setPlot(plot);
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301
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302 PaintScaleLegend legend = new PaintScaleLegend(
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303 lookupPaint, scale);
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304 legend.setMargin(new RectangleInsets(3d, 10d, 3d, 10d));
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305 legend.setPosition(RectangleEdge.LEFT);
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306 legend.setAxisOffset(5d);
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307
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308 chart.addSubtitle(legend);
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309
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310 return chart;
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311 }
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312
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313 /**
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314 * @see de.intevation.gnv.chart.Chart#generateChart()
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315 */
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316 public JFreeChart generateChart() {
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317 if (chart == null) {
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318 chart = createChart();
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319 }
527
f598702b2a10 Fixed issue157: Verticalcrosssection charts have a white background as all other chart types have.
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320
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321 return chart;
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322 }
527
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323
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324 /**
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325 * Set the background paint of {@link #chart}.
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326 * @param paint
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327 */
527
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328 public void setBackgroundPaint(Paint paint) {
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329 chart.setBackgroundPaint(paint);
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330 }
446
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331 }
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332 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org