Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/jfree/CollisionFreeXYTextAnnotation.java @ 3735:f48396deca91
Updating area themes
flys-artifacts/trunk@5410 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Christian Lins <christian.lins@intevation.de> |
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date | Sun, 09 Sep 2012 13:07:06 +0000 |
parents | 0f7abd95c6e2 |
children | 6ed8ebd48d6e |
rev | line source |
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2157
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Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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1 package de.intevation.flys.jfree; |
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2 |
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3 import org.apache.log4j.Logger; |
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4 |
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5 import java.awt.Shape; |
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6 import java.awt.geom.Rectangle2D; |
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7 |
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Avoid that annotations like the ones used for hyks prevent manual point text annotation rendering.
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8 import org.jfree.chart.entity.EntityCollection; |
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9 import org.jfree.chart.annotations.XYTextAnnotation; |
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10 import org.jfree.chart.axis.ValueAxis; |
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11 import org.jfree.chart.plot.PlotOrientation; |
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12 import org.jfree.chart.plot.XYPlot; |
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13 import org.jfree.chart.entity.XYAnnotationEntity; |
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14 import org.jfree.chart.plot.PlotRenderingInfo; |
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15 import org.jfree.chart.plot.Plot; |
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16 |
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17 import org.jfree.text.TextUtilities; |
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18 |
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19 import org.jfree.ui.RectangleEdge; |
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20 |
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21 /** |
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22 * Custom Annotations class that is drawn only if no collisions with other |
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23 * already drawn CustomAnnotations in current plot are found. |
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24 */ |
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25 public class CollisionFreeXYTextAnnotation extends XYTextAnnotation { |
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26 |
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27 /** Logger for this class. */ |
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28 private static Logger logger = |
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29 Logger.getLogger(CollisionFreeXYTextAnnotation.class); |
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30 |
2161
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Somewhat unified Annotation handling, use jfreechart-house-toolkit instead of custom StickyAxisAnnotation.
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31 |
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32 public CollisionFreeXYTextAnnotation(String text, double x, double y) { |
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33 super(text, x, y); |
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34 } |
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35 |
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36 |
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37 /** |
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38 * Draw the Annotation only if it does not collide with other |
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39 * already drawn Annotations- texts. |
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40 * |
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41 * @param g2 the graphics device. |
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42 * @param plot the plot. |
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43 * @param dataArea the data area. |
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44 * @param domainAxis the domain axis. |
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45 * @param rangeAxis the range axis. |
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46 * @param rendererIndex the render index. |
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47 * @param info state information, escpecially collects info about |
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48 * already drawn shapes (and thus annotations), used |
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49 * for collision detection. |
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50 */ |
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51 @Override |
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52 public void draw( |
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53 java.awt.Graphics2D g2, |
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54 XYPlot plot, |
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55 java.awt.geom.Rectangle2D dataArea, |
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56 ValueAxis domainAxis, |
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57 ValueAxis rangeAxis, |
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58 int rendererIndex, |
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59 PlotRenderingInfo info |
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60 ) { |
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61 // From superclass, adjusted access only. |
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62 PlotOrientation orientation = plot.getOrientation(); |
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63 RectangleEdge domainEdge = Plot.resolveDomainAxisLocation( |
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64 plot.getDomainAxisLocation(), orientation); |
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65 RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation( |
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66 plot.getRangeAxisLocation(), orientation); |
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67 |
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68 float anchorX = (float) domainAxis.valueToJava2D( |
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69 this.getX(), dataArea, domainEdge); |
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70 float anchorY = (float) rangeAxis.valueToJava2D( |
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71 this.getY(), dataArea, rangeEdge); |
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72 |
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73 if (orientation == PlotOrientation.HORIZONTAL) { |
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74 float tempAnchor = anchorX; |
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75 anchorX = anchorY; |
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76 anchorY = tempAnchor; |
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77 } |
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78 |
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79 g2.setFont(getFont()); |
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80 Shape hotspot = TextUtilities.calculateRotatedStringBounds( |
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81 getText(), g2, anchorX, anchorY, getTextAnchor(), |
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82 getRotationAngle(), getRotationAnchor()); |
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83 |
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84 // Deviation from superclass: prevent collision. |
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85 Rectangle2D hotspotBox = hotspot.getBounds2D(); |
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86 |
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Avoid collisions between line labels.
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87 if (JFreeUtil.collides(hotspot, info.getOwner().getEntityCollection(), |
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88 XYAnnotationEntity.class)) { |
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89 return; |
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90 } |
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91 |
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92 if (this.getBackgroundPaint() != null) { |
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93 g2.setPaint(this.getBackgroundPaint()); |
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94 g2.fill(hotspot); |
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95 } |
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96 g2.setPaint(getPaint()); |
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97 TextUtilities.drawRotatedString(getText(), g2, anchorX, anchorY, |
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98 getTextAnchor(), getRotationAngle(), getRotationAnchor()); |
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99 if (this.isOutlineVisible()) { |
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100 g2.setStroke(this.getOutlineStroke()); |
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101 g2.setPaint(this.getOutlinePaint()); |
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102 g2.draw(hotspot); |
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103 } |
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104 |
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105 //String toolTip = getToolTipText(); |
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106 //String url = getURL(); |
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107 String toolTip = "CollisionFreeXYTextAnnotation"; |
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108 String url = toolTip; |
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109 |
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110 if (toolTip != null || url != null) { |
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111 addEntity(info, hotspot, rendererIndex, toolTip, url); |
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112 } |
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113 else { |
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114 addEntity(info, hotspot, rendererIndex, |
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115 "CollisionFreeXYTextAnnotation", |
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116 "CollisionFreeXYTextAnnotation"); |
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117 } |
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118 } |
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119 |
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120 /** |
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121 * A utility method for adding an {@link CollisionFreeXYAnnotationEntity} to |
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122 * a {@link PlotRenderingInfo} instance. |
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123 * |
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124 * @param info the plot rendering info (<code>null</code> permitted). |
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125 * @param hotspot the hotspot area. |
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126 * @param rendererIndex the renderer index. |
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127 * @param toolTipText the tool tip text. |
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128 * @param urlText the URL text. |
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129 */ |
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130 protected void addEntity(PlotRenderingInfo info, |
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131 Shape hotspot, int rendererIndex, |
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132 String toolTipText, String urlText) { |
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133 if (info == null) { |
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134 return; |
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135 } |
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136 EntityCollection entities = info.getOwner().getEntityCollection(); |
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137 if (entities == null) { |
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138 return; |
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139 } |
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140 CollisionFreeXYTextAnnotationEntity entity = |
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141 new CollisionFreeXYTextAnnotationEntity(hotspot, |
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142 rendererIndex, toolTipText, urlText); |
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143 entities.add(entity); |
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144 } |
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145 } |
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146 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |