Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/jfree/CollisionFreeXYTextAnnotation.java @ 3468:f37e7e8907cb
merged flys-artifacts/2.8.1
| author | Thomas Arendsen Hein <thomas@intevation.de> |
|---|---|
| date | Fri, 28 Sep 2012 12:14:39 +0200 |
| parents | 0f7abd95c6e2 |
| children | 6ed8ebd48d6e |
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| 3387:5ffad8bde8ad | 3468:f37e7e8907cb |
|---|---|
| 1 package de.intevation.flys.jfree; | |
| 2 | |
| 3 import org.apache.log4j.Logger; | |
| 4 | |
| 5 import java.awt.Shape; | |
| 6 import java.awt.geom.Rectangle2D; | |
| 7 | |
| 8 import org.jfree.chart.entity.EntityCollection; | |
| 9 import org.jfree.chart.annotations.XYTextAnnotation; | |
| 10 import org.jfree.chart.axis.ValueAxis; | |
| 11 import org.jfree.chart.plot.PlotOrientation; | |
| 12 import org.jfree.chart.plot.XYPlot; | |
| 13 import org.jfree.chart.entity.XYAnnotationEntity; | |
| 14 import org.jfree.chart.plot.PlotRenderingInfo; | |
| 15 import org.jfree.chart.plot.Plot; | |
| 16 | |
| 17 import org.jfree.text.TextUtilities; | |
| 18 | |
| 19 import org.jfree.ui.RectangleEdge; | |
| 20 | |
| 21 /** | |
| 22 * Custom Annotations class that is drawn only if no collisions with other | |
| 23 * already drawn CustomAnnotations in current plot are found. | |
| 24 */ | |
| 25 public class CollisionFreeXYTextAnnotation extends XYTextAnnotation { | |
| 26 | |
| 27 /** Logger for this class. */ | |
| 28 private static Logger logger = | |
| 29 Logger.getLogger(CollisionFreeXYTextAnnotation.class); | |
| 30 | |
| 31 | |
| 32 public CollisionFreeXYTextAnnotation(String text, double x, double y) { | |
| 33 super(text, x, y); | |
| 34 } | |
| 35 | |
| 36 | |
| 37 /** | |
| 38 * Draw the Annotation only if it does not collide with other | |
| 39 * already drawn Annotations- texts. | |
| 40 * | |
| 41 * @param g2 the graphics device. | |
| 42 * @param plot the plot. | |
| 43 * @param dataArea the data area. | |
| 44 * @param domainAxis the domain axis. | |
| 45 * @param rangeAxis the range axis. | |
| 46 * @param rendererIndex the render index. | |
| 47 * @param info state information, escpecially collects info about | |
| 48 * already drawn shapes (and thus annotations), used | |
| 49 * for collision detection. | |
| 50 */ | |
| 51 @Override | |
| 52 public void draw( | |
| 53 java.awt.Graphics2D g2, | |
| 54 XYPlot plot, | |
| 55 java.awt.geom.Rectangle2D dataArea, | |
| 56 ValueAxis domainAxis, | |
| 57 ValueAxis rangeAxis, | |
| 58 int rendererIndex, | |
| 59 PlotRenderingInfo info | |
| 60 ) { | |
| 61 // From superclass, adjusted access only. | |
| 62 PlotOrientation orientation = plot.getOrientation(); | |
| 63 RectangleEdge domainEdge = Plot.resolveDomainAxisLocation( | |
| 64 plot.getDomainAxisLocation(), orientation); | |
| 65 RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation( | |
| 66 plot.getRangeAxisLocation(), orientation); | |
| 67 | |
| 68 float anchorX = (float) domainAxis.valueToJava2D( | |
| 69 this.getX(), dataArea, domainEdge); | |
| 70 float anchorY = (float) rangeAxis.valueToJava2D( | |
| 71 this.getY(), dataArea, rangeEdge); | |
| 72 | |
| 73 if (orientation == PlotOrientation.HORIZONTAL) { | |
| 74 float tempAnchor = anchorX; | |
| 75 anchorX = anchorY; | |
| 76 anchorY = tempAnchor; | |
| 77 } | |
| 78 | |
| 79 g2.setFont(getFont()); | |
| 80 Shape hotspot = TextUtilities.calculateRotatedStringBounds( | |
| 81 getText(), g2, anchorX, anchorY, getTextAnchor(), | |
| 82 getRotationAngle(), getRotationAnchor()); | |
| 83 | |
| 84 // Deviation from superclass: prevent collision. | |
| 85 Rectangle2D hotspotBox = hotspot.getBounds2D(); | |
| 86 | |
| 87 if (JFreeUtil.collides(hotspot, info.getOwner().getEntityCollection(), | |
| 88 XYAnnotationEntity.class)) { | |
| 89 return; | |
| 90 } | |
| 91 | |
| 92 if (this.getBackgroundPaint() != null) { | |
| 93 g2.setPaint(this.getBackgroundPaint()); | |
| 94 g2.fill(hotspot); | |
| 95 } | |
| 96 g2.setPaint(getPaint()); | |
| 97 TextUtilities.drawRotatedString(getText(), g2, anchorX, anchorY, | |
| 98 getTextAnchor(), getRotationAngle(), getRotationAnchor()); | |
| 99 if (this.isOutlineVisible()) { | |
| 100 g2.setStroke(this.getOutlineStroke()); | |
| 101 g2.setPaint(this.getOutlinePaint()); | |
| 102 g2.draw(hotspot); | |
| 103 } | |
| 104 | |
| 105 //String toolTip = getToolTipText(); | |
| 106 //String url = getURL(); | |
| 107 String toolTip = "CollisionFreeXYTextAnnotation"; | |
| 108 String url = toolTip; | |
| 109 | |
| 110 if (toolTip != null || url != null) { | |
| 111 addEntity(info, hotspot, rendererIndex, toolTip, url); | |
| 112 } | |
| 113 else { | |
| 114 addEntity(info, hotspot, rendererIndex, | |
| 115 "CollisionFreeXYTextAnnotation", | |
| 116 "CollisionFreeXYTextAnnotation"); | |
| 117 } | |
| 118 } | |
| 119 | |
| 120 /** | |
| 121 * A utility method for adding an {@link CollisionFreeXYAnnotationEntity} to | |
| 122 * a {@link PlotRenderingInfo} instance. | |
| 123 * | |
| 124 * @param info the plot rendering info (<code>null</code> permitted). | |
| 125 * @param hotspot the hotspot area. | |
| 126 * @param rendererIndex the renderer index. | |
| 127 * @param toolTipText the tool tip text. | |
| 128 * @param urlText the URL text. | |
| 129 */ | |
| 130 protected void addEntity(PlotRenderingInfo info, | |
| 131 Shape hotspot, int rendererIndex, | |
| 132 String toolTipText, String urlText) { | |
| 133 if (info == null) { | |
| 134 return; | |
| 135 } | |
| 136 EntityCollection entities = info.getOwner().getEntityCollection(); | |
| 137 if (entities == null) { | |
| 138 return; | |
| 139 } | |
| 140 CollisionFreeXYTextAnnotationEntity entity = | |
| 141 new CollisionFreeXYTextAnnotationEntity(hotspot, | |
| 142 rendererIndex, toolTipText, urlText); | |
| 143 entities.add(entity); | |
| 144 } | |
| 145 } | |
| 146 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |