Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/jfree/CollisionFreeXYTextAnnotation.java @ 2161:c68f4f227c09

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Somewhat unified Annotation handling, use jfreechart-house-toolkit instead of custom StickyAxisAnnotation. flys-artifacts/trunk@3747 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Mon, 23 Jan 2012 10:44:34 +0000
parents c4ceade9d50e
children 0b8c04c7f762
rev   line source
2157
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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parents:
diff changeset
1 package de.intevation.flys.jfree;
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2
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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3 import org.apache.log4j.Logger;
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4
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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5 import java.util.Iterator;
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6
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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7 import java.awt.Shape;
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8 import java.awt.geom.Rectangle2D;
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9
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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10 import org.jfree.chart.annotations.XYTextAnnotation;
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11 import org.jfree.chart.axis.ValueAxis;
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12 import org.jfree.chart.plot.PlotOrientation;
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13 import org.jfree.chart.plot.XYPlot;
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14 import org.jfree.chart.entity.XYAnnotationEntity;
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15 import org.jfree.chart.plot.PlotRenderingInfo;
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16 import org.jfree.chart.plot.Plot;
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17
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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18 import org.jfree.text.TextUtilities;
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19
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20 import org.jfree.ui.RectangleEdge;
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21
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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22
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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23 /**
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24 * Custom Annotations class that is drawn only if no collisions with other
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25 * already drawn CustomAnnotations in current plot are found.
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26 */
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27 public class CollisionFreeXYTextAnnotation extends XYTextAnnotation {
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28
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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29 /** Logger for this class. */
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30 private static Logger logger =
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31 Logger.getLogger(CollisionFreeXYTextAnnotation.class);
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32
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33
c68f4f227c09 Somewhat unified Annotation handling, use jfreechart-house-toolkit instead of custom StickyAxisAnnotation.
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34 public CollisionFreeXYTextAnnotation(String text, double x, double y) {
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35 super(text, x, y);
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36 }
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37
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38
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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39 /**
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40 * Draw the Annotation only if it does not collide with other
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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41 * already drawn Annotations- texts.
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42 *
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43 * @param g2 the graphics device.
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44 * @param plot the plot.
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45 * @param dataArea the data area.
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46 * @param domainAxis the domain axis.
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47 * @param rangeAxis the range axis.
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48 * @param rendererIndex the render index.
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49 * @param info state information, escpecially collects info about
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50 * already drawn shapes (and thus annotations), used
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51 * for collision detection.
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52 */
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53 @Override
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54 public void draw(
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55 java.awt.Graphics2D g2,
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56 XYPlot plot,
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57 java.awt.geom.Rectangle2D dataArea,
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58 ValueAxis domainAxis,
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59 ValueAxis rangeAxis,
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60 int rendererIndex,
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61 PlotRenderingInfo info
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62 ) {
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63 // From superclass, adjusted access only.
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64 PlotOrientation orientation = plot.getOrientation();
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65 RectangleEdge domainEdge = Plot.resolveDomainAxisLocation(
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66 plot.getDomainAxisLocation(), orientation);
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67 RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation(
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68 plot.getRangeAxisLocation(), orientation);
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69
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70 float anchorX = (float) domainAxis.valueToJava2D(
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71 this.getX(), dataArea, domainEdge);
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72 float anchorY = (float) rangeAxis.valueToJava2D(
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73 this.getY(), dataArea, rangeEdge);
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74
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75 if (orientation == PlotOrientation.HORIZONTAL) {
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76 float tempAnchor = anchorX;
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77 anchorX = anchorY;
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78 anchorY = tempAnchor;
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79 }
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80
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81 g2.setFont(getFont());
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82 Shape hotspot = TextUtilities.calculateRotatedStringBounds(
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83 getText(), g2, anchorX, anchorY, getTextAnchor(),
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84 getRotationAngle(), getRotationAnchor());
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85
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86 // Deviation from superclass: prevent collision.
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87 Rectangle2D hotspotBox = hotspot.getBounds2D();
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88
2157
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89 for (Iterator i = info.getOwner().getEntityCollection().iterator();
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90 i.hasNext(); ) {
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91 Object next = i.next();
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92 // Collision with other stuff than XYAnnotations are okay.
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93 if (next instanceof XYAnnotationEntity) {
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94 XYAnnotationEntity drawnShape = (XYAnnotationEntity) next;
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95 if (drawnShape.getArea().intersects(hotspotBox)) {
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96 // Found collision, early stop.
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97 return;
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98 }
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99 }
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100 }
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101
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102 if (this.getBackgroundPaint() != null) {
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103 g2.setPaint(this.getBackgroundPaint());
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104 g2.fill(hotspot);
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105 }
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106 g2.setPaint(getPaint());
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107 TextUtilities.drawRotatedString(getText(), g2, anchorX, anchorY,
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108 getTextAnchor(), getRotationAngle(), getRotationAnchor());
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109 if (this.isOutlineVisible()) {
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110 g2.setStroke(this.getOutlineStroke());
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111 g2.setPaint(this.getOutlinePaint());
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112 g2.draw(hotspot);
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113 }
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114
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115 String toolTip = getToolTipText();
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116 String url = getURL();
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117 if (toolTip != null || url != null) {
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118 addEntity(info, hotspot, rendererIndex, toolTip, url);
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119 }
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120 else {
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121 addEntity(info, hotspot, rendererIndex,
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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122 "CollisionFreeXYTextAnnotation",
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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123 "CollisionFreeXYTextAnnotation");
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
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124 }
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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125 }
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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126 }
c4ceade9d50e Added new Annotation class that prevents collisions (to replace StickyAxisAnnotation).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
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127 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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