Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/jfree/CollisionFreeXYTextAnnotation.java @ 2203:1db66b88868f
Fixed a bug in the winfo transitions.
flys-artifacts/trunk@3823 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Mon, 30 Jan 2012 10:54:38 +0000 |
parents | c68f4f227c09 |
children | 0b8c04c7f762 |
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package de.intevation.flys.jfree; import org.apache.log4j.Logger; import java.util.Iterator; import java.awt.Shape; import java.awt.geom.Rectangle2D; import org.jfree.chart.annotations.XYTextAnnotation; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.entity.XYAnnotationEntity; import org.jfree.chart.plot.PlotRenderingInfo; import org.jfree.chart.plot.Plot; import org.jfree.text.TextUtilities; import org.jfree.ui.RectangleEdge; /** * Custom Annotations class that is drawn only if no collisions with other * already drawn CustomAnnotations in current plot are found. */ public class CollisionFreeXYTextAnnotation extends XYTextAnnotation { /** Logger for this class. */ private static Logger logger = Logger.getLogger(CollisionFreeXYTextAnnotation.class); public CollisionFreeXYTextAnnotation(String text, double x, double y) { super(text, x, y); } /** * Draw the Annotation only if it does not collide with other * already drawn Annotations- texts. * * @param g2 the graphics device. * @param plot the plot. * @param dataArea the data area. * @param domainAxis the domain axis. * @param rangeAxis the range axis. * @param rendererIndex the render index. * @param info state information, escpecially collects info about * already drawn shapes (and thus annotations), used * for collision detection. */ @Override public void draw( java.awt.Graphics2D g2, XYPlot plot, java.awt.geom.Rectangle2D dataArea, ValueAxis domainAxis, ValueAxis rangeAxis, int rendererIndex, PlotRenderingInfo info ) { // From superclass, adjusted access only. PlotOrientation orientation = plot.getOrientation(); RectangleEdge domainEdge = Plot.resolveDomainAxisLocation( plot.getDomainAxisLocation(), orientation); RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation( plot.getRangeAxisLocation(), orientation); float anchorX = (float) domainAxis.valueToJava2D( this.getX(), dataArea, domainEdge); float anchorY = (float) rangeAxis.valueToJava2D( this.getY(), dataArea, rangeEdge); if (orientation == PlotOrientation.HORIZONTAL) { float tempAnchor = anchorX; anchorX = anchorY; anchorY = tempAnchor; } g2.setFont(getFont()); Shape hotspot = TextUtilities.calculateRotatedStringBounds( getText(), g2, anchorX, anchorY, getTextAnchor(), getRotationAngle(), getRotationAnchor()); // Deviation from superclass: prevent collision. Rectangle2D hotspotBox = hotspot.getBounds2D(); for (Iterator i = info.getOwner().getEntityCollection().iterator(); i.hasNext(); ) { Object next = i.next(); // Collision with other stuff than XYAnnotations are okay. if (next instanceof XYAnnotationEntity) { XYAnnotationEntity drawnShape = (XYAnnotationEntity) next; if (drawnShape.getArea().intersects(hotspotBox)) { // Found collision, early stop. return; } } } if (this.getBackgroundPaint() != null) { g2.setPaint(this.getBackgroundPaint()); g2.fill(hotspot); } g2.setPaint(getPaint()); TextUtilities.drawRotatedString(getText(), g2, anchorX, anchorY, getTextAnchor(), getRotationAngle(), getRotationAnchor()); if (this.isOutlineVisible()) { g2.setStroke(this.getOutlineStroke()); g2.setPaint(this.getOutlinePaint()); g2.draw(hotspot); } String toolTip = getToolTipText(); String url = getURL(); if (toolTip != null || url != null) { addEntity(info, hotspot, rendererIndex, toolTip, url); } else { addEntity(info, hotspot, rendererIndex, "CollisionFreeXYTextAnnotation", "CollisionFreeXYTextAnnotation"); } } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :