Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/jfree/ShapeRenderer.java @ 3166:591be3486087

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FixA: Prevent that the plot becomes to small if only one point is drawn. flys-artifacts/trunk@4779 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 25 Jun 2012 15:03:57 +0000
parents 6d0567a8387d
children 0cf647fe2a96
rev   line source
3162
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1 package de.intevation.flys.jfree;
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2
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3 /**
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4 * Copyright (c) 2006, 2012 by Intevation GmbH
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5 *
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6 * @author Sascha L. Teichmann (teichmann@intevation.de)
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7 *
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8 * This program is free software under the LGPL (&gt;=v2.1)
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9 * Read the file LGPL coming with FLYS for details.
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10 */
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11
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12 import java.awt.Font;
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13 import java.awt.Graphics2D;
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14 import java.awt.Paint;
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15 import java.awt.Shape;
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16
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17 import java.awt.geom.Point2D;
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18 import java.awt.geom.Rectangle2D;
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19
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20 import java.util.ArrayList;
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21 import java.util.List;
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22 import java.util.Map;
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23
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24 import org.jfree.chart.axis.ValueAxis;
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25
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26 import org.jfree.chart.labels.ItemLabelPosition;
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27 import org.jfree.chart.labels.XYItemLabelGenerator;
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28
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29 import org.jfree.chart.plot.CrosshairState;
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30 import org.jfree.chart.plot.PlotOrientation;
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31 import org.jfree.chart.plot.PlotRenderingInfo;
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32 import org.jfree.chart.plot.XYPlot;
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33
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34 import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
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35 import org.jfree.chart.renderer.xy.XYItemRendererState;
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36
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37 import org.jfree.data.xy.XYDataset;
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38
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39 import org.jfree.text.TextUtilities;
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40
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41 import org.jfree.ui.RectangleEdge;
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42
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43 public class ShapeRenderer
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44 extends StandardXYItemRenderer {
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45
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46 public static class Entry {
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47 protected Shape shape;
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48 protected Shape frame;
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49 protected Paint paint;
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50 protected boolean filled;
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51
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52 public Entry(
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53 Shape shape,
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54 Paint paint,
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55 boolean filled
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56 ) {
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57 this.shape = shape;
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58 this.paint = paint;
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59 this.filled = filled;
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60 }
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61
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62 public Entry(
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63 Shape shape,
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64 Shape frame,
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65 Paint paint,
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66 boolean filled
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67 ) {
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68 this.shape = shape;
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69 this.frame = frame;
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70 this.paint = paint;
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71 this.filled = filled;
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72 }
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73
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74 public Shape getShape() {
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75 return shape;
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76 }
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77
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78 public void setShape(Shape shape) {
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79 this.shape = shape;
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80 }
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81
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82
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83 public Paint getPaint() {
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84 return paint;
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85 }
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86
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87 public void setPaint(Paint paint) {
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88 this.paint = paint;
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89 }
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90
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91 public boolean getFilled() {
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92 return filled;
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93 }
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94
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95 public void setFilled(boolean filled) {
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96 this.filled = filled;
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97 }
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98
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99 public boolean equals(Object other) {
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100 Entry entry = (Entry)other;
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101 return filled == entry.filled
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102 && paint.equals(entry.paint)
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103 && shape.equals(entry.shape);
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104 }
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105
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106 public int hashCode() {
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107 return
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108 shape.hashCode() ^
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109 paint.hashCode() ^
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110 (filled ? 1231 : 1237);
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111 }
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112 } // class Entry
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113
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114 protected Entry [] entries;
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115
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116 protected List<Rectangle2D> labelBoundingBoxes;
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117
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118 protected Rectangle2D area;
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119
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120 public ShapeRenderer() {
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121 this(SHAPES);
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122 }
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123
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124 public ShapeRenderer(int type) {
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125 super(type);
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126 }
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127
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128 public ShapeRenderer(Map<Entry, Integer> map) {
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129 super(SHAPES);
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130 setEntries(map);
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131 }
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132
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133 public void setEntries(Entry [] entries) {
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134 this.entries = entries;
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135 }
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136
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137 public void setEntries(Map<Entry, Integer> map) {
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138 Entry [] entries = new Entry[map.size()];
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139
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140 for (Map.Entry<Entry, Integer> entry: map.entrySet()) {
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141 entries[entry.getValue()] = entry.getKey();
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142 }
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143
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144 setEntries(entries);
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145 }
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146
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147 @Override
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148 public Shape getSeriesShape(int series) {
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149 return entries[series].shape;
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150 }
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151
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152 public Shape getSeriesFrame(int series) {
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153 return entries[series].frame;
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154 }
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155
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156 @Override
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157 public Paint getSeriesPaint(int series) {
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158 return entries[series].paint;
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159 }
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160
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161 @Override
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162 public boolean getItemShapeFilled(int series, int item) {
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163 return entries[series].filled;
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164 }
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165
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166 @Override
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167 public XYItemRendererState initialise(
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168 Graphics2D g2,
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169 Rectangle2D dataArea,
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170 XYPlot plot,
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171 XYDataset data,
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172 PlotRenderingInfo info
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173 ) {
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174 if (labelBoundingBoxes == null) {
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175 labelBoundingBoxes = new ArrayList<Rectangle2D>(32);
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176 }
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177 else {
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178 labelBoundingBoxes.clear();
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179 }
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180
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181 area = dataArea;
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182
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183 return super.initialise(g2, dataArea, plot, data, info);
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184 }
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185
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186 @Override
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187 public void drawItem(
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188 Graphics2D g2,
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189 XYItemRendererState state,
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190 Rectangle2D dataArea,
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191 PlotRenderingInfo info,
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192 XYPlot plot,
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193 ValueAxis domainAxis,
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194 ValueAxis rangeAxis,
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195 XYDataset dataset,
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196 int series,
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197 int item,
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198 CrosshairState crosshairState,
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199 int pass
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200 ) {
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201 if (!getItemVisible(series, item)) {
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202 return;
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203 }
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204
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205 // get the data point...
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206 double x1 = dataset.getXValue(series, item);
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207 double y1 = dataset.getYValue(series, item);
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208 if (Double.isNaN(x1) || Double.isNaN(y1)) {
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209 return;
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210 }
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211
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212 RectangleEdge xAxisLocation = plot.getDomainAxisEdge();
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213 RectangleEdge yAxisLocation = plot.getRangeAxisEdge();
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214 double x = domainAxis.valueToJava2D(x1, dataArea, xAxisLocation);
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215 double y = rangeAxis.valueToJava2D(y1, dataArea, yAxisLocation);
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216
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217 if (dataArea.contains(x, y))
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218 super.drawItem(
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219 g2,
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220 state,
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221 dataArea,
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parents:
diff changeset
222 info,
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diff changeset
223 plot,
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diff changeset
224 domainAxis,
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parents:
diff changeset
225 rangeAxis,
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parents:
diff changeset
226 dataset,
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diff changeset
227 series,
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diff changeset
228 item,
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229 crosshairState,
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230 pass);
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diff changeset
231 }
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232
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233 protected Point2D shiftBox(Rectangle2D box) {
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234
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235 double cx1 = area.getX();
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236 double cy1 = area.getY();
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237 double cx2 = cx1 + area.getWidth();
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238 double cy2 = cy1 + area.getHeight();
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239
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240 double bx1 = box.getX();
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241 double by1 = box.getY();
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242 double bx2 = bx1 + box.getWidth();
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diff changeset
243 double by2 = by1 + box.getHeight();
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244
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245 double dx;
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diff changeset
246 double dy;
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247
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248 if (bx1 < cx1) {
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249 dx = cx1 - bx1;
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250 }
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251 else if (bx2 > cx2) {
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252 dx = cx2 - bx2;
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diff changeset
253 }
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254 else {
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255 dx = 0d;
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diff changeset
256 }
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257
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258 if (by1 < cy1) {
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259 dy = cy1 - by1;
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260 }
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261 else if (by2 > cy2) {
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262 dy = cy2 - by2;
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263 }
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264 else {
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265 dy = 0d;
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266 }
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267
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268 return new Point2D.Double(dx, dy);
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269 }
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270
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271 @Override
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272 protected void drawItemLabel(
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273 Graphics2D g2,
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274 PlotOrientation orientation,
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275 XYDataset dataset,
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276 int series,
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277 int item,
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278 double x,
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279 double y,
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280 boolean negative
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281 ) {
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282 XYItemLabelGenerator generator = getItemLabelGenerator(series, item);
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283 if (generator == null) {
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284 return;
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285 }
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286
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287 Font labelFont = getItemLabelFont(series, item);
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288
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289 Paint paint = getItemLabelPaint(series, item);
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290
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291 g2.setFont(labelFont);
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292 g2.setPaint(paint);
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293
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294 String label = generator.generateLabel(dataset, series, item);
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295
3164
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296 ATTEMPS: for (int attempt = 0; attempt < 2; ++attempt) {
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297 // get the label position..
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298 ItemLabelPosition position = null;
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299
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300 boolean pos;
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301 switch (attempt) {
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302 case 0: pos = negative; break;
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303 case 1: pos = !negative; break;
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304 default: break ATTEMPS;
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305 }
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306
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307 if (pos) {
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308 position = getNegativeItemLabelPosition(series, item);
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309 }
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310 else {
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311 position = getPositiveItemLabelPosition(series, item);
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312 }
3162
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313
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314 // work out the label anchor point...
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315 Point2D anchorPoint = calculateLabelAnchorPoint(
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316 position.getItemLabelAnchor(), x, y, orientation);
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317
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318 Shape labelShape = TextUtilities.calculateRotatedStringBounds(
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319 label, g2,
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320 (float)anchorPoint.getX(), (float)anchorPoint.getY(),
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321 position.getTextAnchor(), position.getAngle(),
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322 position.getRotationAnchor());
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323
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324 Rectangle2D bbox = labelShape.getBounds2D();
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325
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326 Point2D shift = shiftBox(bbox);
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327
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328 bbox = new Rectangle2D.Double(
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329 bbox.getX() + shift.getX(),
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330 bbox.getY() + shift.getY(),
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331 bbox.getWidth(),
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332 bbox.getHeight());
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333
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334 if (labelBoundingBoxes != null) {
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335 for (Rectangle2D old: labelBoundingBoxes) {
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336 if (old.intersects(bbox)) {
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337 continue ATTEMPS;
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338 }
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339 }
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340 labelBoundingBoxes.add(bbox);
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341 }
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342
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343 TextUtilities.drawRotatedString(
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344 label, g2,
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345 (float)(anchorPoint.getX() + shift.getX()),
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346 (float)(anchorPoint.getY() + shift.getY()),
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347 position.getTextAnchor(), position.getAngle(),
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348 position.getRotationAnchor());
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349 break;
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350 }
3162
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351 }
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352 }
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353 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org