Mercurial > dive4elements > river
annotate flys-artifacts/src/main/java/de/intevation/flys/jfree/CollisionFreeXYTextAnnotation.java @ 4800:c6814695c82c
Added missing InfoldingColumns.java
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Sun, 13 Jan 2013 17:00:37 +0100 |
parents | 6ed8ebd48d6e |
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rev | line source |
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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 java.awt.Shape; |
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4 import java.awt.geom.Rectangle2D; |
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5 |
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6 import org.jfree.chart.entity.EntityCollection; |
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7 import org.jfree.chart.annotations.XYTextAnnotation; |
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8 import org.jfree.chart.axis.ValueAxis; |
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9 import org.jfree.chart.plot.PlotOrientation; |
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10 import org.jfree.chart.plot.XYPlot; |
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11 import org.jfree.chart.entity.XYAnnotationEntity; |
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12 import org.jfree.chart.plot.PlotRenderingInfo; |
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13 import org.jfree.chart.plot.Plot; |
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14 |
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15 import org.jfree.text.TextUtilities; |
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16 |
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17 import org.jfree.ui.RectangleEdge; |
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18 |
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19 /** |
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20 * Custom Annotations class that is drawn only if no collisions with other |
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21 * already drawn CustomAnnotations in current plot are found. |
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22 */ |
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23 public class CollisionFreeXYTextAnnotation extends XYTextAnnotation { |
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24 |
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Somewhat unified Annotation handling, use jfreechart-house-toolkit instead of custom StickyAxisAnnotation.
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25 public CollisionFreeXYTextAnnotation(String text, double x, double y) { |
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26 super(text, x, y); |
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27 } |
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28 |
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29 |
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30 /** |
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31 * Draw the Annotation only if it does not collide with other |
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32 * already drawn Annotations- texts. |
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33 * |
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34 * @param g2 the graphics device. |
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35 * @param plot the plot. |
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36 * @param dataArea the data area. |
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37 * @param domainAxis the domain axis. |
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38 * @param rangeAxis the range axis. |
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39 * @param rendererIndex the render index. |
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40 * @param info state information, escpecially collects info about |
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41 * already drawn shapes (and thus annotations), used |
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42 * for collision detection. |
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43 */ |
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44 @Override |
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45 public void draw( |
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46 java.awt.Graphics2D g2, |
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47 XYPlot plot, |
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48 java.awt.geom.Rectangle2D dataArea, |
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49 ValueAxis domainAxis, |
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50 ValueAxis rangeAxis, |
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51 int rendererIndex, |
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52 PlotRenderingInfo info |
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53 ) { |
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54 // From superclass, adjusted access only. |
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55 PlotOrientation orientation = plot.getOrientation(); |
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56 RectangleEdge domainEdge = Plot.resolveDomainAxisLocation( |
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57 plot.getDomainAxisLocation(), orientation); |
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58 RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation( |
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59 plot.getRangeAxisLocation(), orientation); |
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60 |
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61 float anchorX = (float) domainAxis.valueToJava2D( |
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62 this.getX(), dataArea, domainEdge); |
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63 float anchorY = (float) rangeAxis.valueToJava2D( |
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64 this.getY(), dataArea, rangeEdge); |
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65 |
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66 if (orientation == PlotOrientation.HORIZONTAL) { |
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67 float tempAnchor = anchorX; |
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68 anchorX = anchorY; |
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69 anchorY = tempAnchor; |
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70 } |
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71 |
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72 g2.setFont(getFont()); |
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73 Shape hotspot = TextUtilities.calculateRotatedStringBounds( |
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74 getText(), g2, anchorX, anchorY, getTextAnchor(), |
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75 getRotationAngle(), getRotationAnchor()); |
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76 |
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77 // Deviation from superclass: prevent collision. |
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78 if (JFreeUtil.collides(hotspot, info.getOwner().getEntityCollection(), |
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79 XYAnnotationEntity.class)) { |
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80 return; |
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81 } |
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82 |
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83 if (this.getBackgroundPaint() != null) { |
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84 g2.setPaint(this.getBackgroundPaint()); |
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85 g2.fill(hotspot); |
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86 } |
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87 g2.setPaint(getPaint()); |
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88 TextUtilities.drawRotatedString(getText(), g2, anchorX, anchorY, |
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89 getTextAnchor(), getRotationAngle(), getRotationAnchor()); |
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90 if (this.isOutlineVisible()) { |
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91 g2.setStroke(this.getOutlineStroke()); |
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92 g2.setPaint(this.getOutlinePaint()); |
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93 g2.draw(hotspot); |
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94 } |
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95 |
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96 //String toolTip = getToolTipText(); |
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97 //String url = getURL(); |
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98 String toolTip = "CollisionFreeXYTextAnnotation"; |
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99 String url = toolTip; |
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100 |
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101 if (toolTip != null || url != null) { |
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102 addEntity(info, hotspot, rendererIndex, toolTip, url); |
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103 } |
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104 // XXX: DEAD CODE (as long as a hard value is assigned to toolTip |
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105 /* |
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106 else { |
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107 addEntity(info, hotspot, rendererIndex, |
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108 "CollisionFreeXYTextAnnotation", |
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109 "CollisionFreeXYTextAnnotation"); |
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110 } |
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111 */ |
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112 } |
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113 |
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114 /** |
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115 * A utility method for adding an {@link CollisionFreeXYAnnotationEntity} to |
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116 * a {@link PlotRenderingInfo} instance. |
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117 * |
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118 * @param info the plot rendering info (<code>null</code> permitted). |
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119 * @param hotspot the hotspot area. |
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120 * @param rendererIndex the renderer index. |
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121 * @param toolTipText the tool tip text. |
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122 * @param urlText the URL text. |
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123 */ |
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124 protected void addEntity(PlotRenderingInfo info, |
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125 Shape hotspot, int rendererIndex, |
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126 String toolTipText, String urlText) { |
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127 if (info == null) { |
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128 return; |
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129 } |
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130 EntityCollection entities = info.getOwner().getEntityCollection(); |
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131 if (entities == null) { |
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132 return; |
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133 } |
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134 CollisionFreeXYTextAnnotationEntity entity = |
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135 new CollisionFreeXYTextAnnotationEntity(hotspot, |
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136 rendererIndex, toolTipText, urlText); |
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137 entities.add(entity); |
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138 } |
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139 } |
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140 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |