Mercurial > dive4elements > river
comparison artifacts/src/main/java/org/dive4elements/river/jfree/CollisionFreeXYTextAnnotation.java @ 5838:5aa05a7a34b7
Rename modules to more fitting names.
| author | Sascha L. Teichmann <teichmann@intevation.de> |
|---|---|
| date | Thu, 25 Apr 2013 15:23:37 +0200 |
| parents | flys-artifacts/src/main/java/org/dive4elements/river/jfree/CollisionFreeXYTextAnnotation.java@bd047b71ab37 |
| children | 4897a58c8746 |
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| 5837:d9901a08d0a6 | 5838:5aa05a7a34b7 |
|---|---|
| 1 package org.dive4elements.river.jfree; | |
| 2 | |
| 3 import java.awt.Shape; | |
| 4 import java.awt.geom.Rectangle2D; | |
| 5 | |
| 6 import org.jfree.chart.entity.EntityCollection; | |
| 7 import org.jfree.chart.annotations.XYTextAnnotation; | |
| 8 import org.jfree.chart.axis.ValueAxis; | |
| 9 import org.jfree.chart.plot.PlotOrientation; | |
| 10 import org.jfree.chart.plot.XYPlot; | |
| 11 import org.jfree.chart.entity.XYAnnotationEntity; | |
| 12 import org.jfree.chart.plot.PlotRenderingInfo; | |
| 13 import org.jfree.chart.plot.Plot; | |
| 14 | |
| 15 import org.jfree.text.TextUtilities; | |
| 16 | |
| 17 import org.jfree.ui.RectangleEdge; | |
| 18 | |
| 19 /** | |
| 20 * Custom Annotations class that is drawn only if no collisions with other | |
| 21 * already drawn CustomAnnotations in current plot are found. | |
| 22 */ | |
| 23 public class CollisionFreeXYTextAnnotation extends XYTextAnnotation { | |
| 24 | |
| 25 public CollisionFreeXYTextAnnotation(String text, double x, double y) { | |
| 26 super(text, x, y); | |
| 27 } | |
| 28 | |
| 29 | |
| 30 /** | |
| 31 * Draw the Annotation only if it does not collide with other | |
| 32 * already drawn Annotations- texts. | |
| 33 * | |
| 34 * @param g2 the graphics device. | |
| 35 * @param plot the plot. | |
| 36 * @param dataArea the data area. | |
| 37 * @param domainAxis the domain axis. | |
| 38 * @param rangeAxis the range axis. | |
| 39 * @param rendererIndex the render index. | |
| 40 * @param info state information, escpecially collects info about | |
| 41 * already drawn shapes (and thus annotations), used | |
| 42 * for collision detection. | |
| 43 */ | |
| 44 @Override | |
| 45 public void draw( | |
| 46 java.awt.Graphics2D g2, | |
| 47 XYPlot plot, | |
| 48 java.awt.geom.Rectangle2D dataArea, | |
| 49 ValueAxis domainAxis, | |
| 50 ValueAxis rangeAxis, | |
| 51 int rendererIndex, | |
| 52 PlotRenderingInfo info | |
| 53 ) { | |
| 54 // From superclass, adjusted access only. | |
| 55 PlotOrientation orientation = plot.getOrientation(); | |
| 56 RectangleEdge domainEdge = Plot.resolveDomainAxisLocation( | |
| 57 plot.getDomainAxisLocation(), orientation); | |
| 58 RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation( | |
| 59 plot.getRangeAxisLocation(), orientation); | |
| 60 | |
| 61 float anchorX = (float) domainAxis.valueToJava2D( | |
| 62 this.getX(), dataArea, domainEdge); | |
| 63 float anchorY = (float) rangeAxis.valueToJava2D( | |
| 64 this.getY(), dataArea, rangeEdge); | |
| 65 | |
| 66 if (orientation == PlotOrientation.HORIZONTAL) { | |
| 67 float tempAnchor = anchorX; | |
| 68 anchorX = anchorY; | |
| 69 anchorY = tempAnchor; | |
| 70 } | |
| 71 | |
| 72 g2.setFont(getFont()); | |
| 73 Shape hotspot = TextUtilities.calculateRotatedStringBounds( | |
| 74 getText(), g2, anchorX, anchorY, getTextAnchor(), | |
| 75 getRotationAngle(), getRotationAnchor()); | |
| 76 | |
| 77 // Deviation from superclass: prevent collision. | |
| 78 if (JFreeUtil.collides(hotspot, info.getOwner().getEntityCollection(), | |
| 79 XYAnnotationEntity.class)) { | |
| 80 return; | |
| 81 } | |
| 82 | |
| 83 if (this.getBackgroundPaint() != null) { | |
| 84 g2.setPaint(this.getBackgroundPaint()); | |
| 85 g2.fill(hotspot); | |
| 86 } | |
| 87 g2.setPaint(getPaint()); | |
| 88 TextUtilities.drawRotatedString(getText(), g2, anchorX, anchorY, | |
| 89 getTextAnchor(), getRotationAngle(), getRotationAnchor()); | |
| 90 if (this.isOutlineVisible()) { | |
| 91 g2.setStroke(this.getOutlineStroke()); | |
| 92 g2.setPaint(this.getOutlinePaint()); | |
| 93 g2.draw(hotspot); | |
| 94 } | |
| 95 | |
| 96 //String toolTip = getToolTipText(); | |
| 97 //String url = getURL(); | |
| 98 String toolTip = "CollisionFreeXYTextAnnotation"; | |
| 99 String url = toolTip; | |
| 100 | |
| 101 if (toolTip != null || url != null) { | |
| 102 addEntity(info, hotspot, rendererIndex, toolTip, url); | |
| 103 } | |
| 104 // XXX: DEAD CODE (as long as a hard value is assigned to toolTip | |
| 105 /* | |
| 106 else { | |
| 107 addEntity(info, hotspot, rendererIndex, | |
| 108 "CollisionFreeXYTextAnnotation", | |
| 109 "CollisionFreeXYTextAnnotation"); | |
| 110 } | |
| 111 */ | |
| 112 } | |
| 113 | |
| 114 /** | |
| 115 * A utility method for adding an {@link CollisionFreeXYAnnotationEntity} to | |
| 116 * a {@link PlotRenderingInfo} instance. | |
| 117 * | |
| 118 * @param info the plot rendering info (<code>null</code> permitted). | |
| 119 * @param hotspot the hotspot area. | |
| 120 * @param rendererIndex the renderer index. | |
| 121 * @param toolTipText the tool tip text. | |
| 122 * @param urlText the URL text. | |
| 123 */ | |
| 124 protected void addEntity(PlotRenderingInfo info, | |
| 125 Shape hotspot, int rendererIndex, | |
| 126 String toolTipText, String urlText) { | |
| 127 if (info == null) { | |
| 128 return; | |
| 129 } | |
| 130 EntityCollection entities = info.getOwner().getEntityCollection(); | |
| 131 if (entities == null) { | |
| 132 return; | |
| 133 } | |
| 134 CollisionFreeXYTextAnnotationEntity entity = | |
| 135 new CollisionFreeXYTextAnnotationEntity(hotspot, | |
| 136 rendererIndex, toolTipText, urlText); | |
| 137 entities.add(entity); | |
| 138 } | |
| 139 } | |
| 140 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |