felix@2157: package de.intevation.flys.jfree;
felix@2157:
felix@2157: import java.awt.Shape;
felix@2157: import java.awt.geom.Rectangle2D;
felix@2157:
felix@2318: import org.jfree.chart.entity.EntityCollection;
felix@2157: import org.jfree.chart.annotations.XYTextAnnotation;
felix@2157: import org.jfree.chart.axis.ValueAxis;
felix@2157: import org.jfree.chart.plot.PlotOrientation;
felix@2157: import org.jfree.chart.plot.XYPlot;
felix@2157: import org.jfree.chart.entity.XYAnnotationEntity;
felix@2157: import org.jfree.chart.plot.PlotRenderingInfo;
felix@2157: import org.jfree.chart.plot.Plot;
felix@2157:
felix@2157: import org.jfree.text.TextUtilities;
felix@2157:
felix@2157: import org.jfree.ui.RectangleEdge;
felix@2157:
felix@2157: /**
felix@2157: * Custom Annotations class that is drawn only if no collisions with other
felix@2157: * already drawn CustomAnnotations in current plot are found.
felix@2157: */
felix@2157: public class CollisionFreeXYTextAnnotation extends XYTextAnnotation {
felix@2157:
felix@2161: public CollisionFreeXYTextAnnotation(String text, double x, double y) {
felix@2157: super(text, x, y);
felix@2157: }
felix@2157:
felix@2157:
felix@2157: /**
felix@2157: * Draw the Annotation only if it does not collide with other
felix@2157: * already drawn Annotations- texts.
felix@2157: *
felix@2157: * @param g2 the graphics device.
felix@2157: * @param plot the plot.
felix@2157: * @param dataArea the data area.
felix@2157: * @param domainAxis the domain axis.
felix@2157: * @param rangeAxis the range axis.
felix@2157: * @param rendererIndex the render index.
felix@2157: * @param info state information, escpecially collects info about
felix@2157: * already drawn shapes (and thus annotations), used
felix@2157: * for collision detection.
felix@2157: */
felix@2157: @Override
felix@2157: public void draw(
felix@2157: java.awt.Graphics2D g2,
felix@2157: XYPlot plot,
felix@2157: java.awt.geom.Rectangle2D dataArea,
felix@2157: ValueAxis domainAxis,
felix@2157: ValueAxis rangeAxis,
felix@2157: int rendererIndex,
felix@2157: PlotRenderingInfo info
felix@2157: ) {
felix@2157: // From superclass, adjusted access only.
felix@2157: PlotOrientation orientation = plot.getOrientation();
felix@2157: RectangleEdge domainEdge = Plot.resolveDomainAxisLocation(
felix@2157: plot.getDomainAxisLocation(), orientation);
felix@2157: RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation(
felix@2157: plot.getRangeAxisLocation(), orientation);
felix@2157:
felix@2157: float anchorX = (float) domainAxis.valueToJava2D(
felix@2157: this.getX(), dataArea, domainEdge);
felix@2157: float anchorY = (float) rangeAxis.valueToJava2D(
felix@2157: this.getY(), dataArea, rangeEdge);
felix@2157:
felix@2157: if (orientation == PlotOrientation.HORIZONTAL) {
felix@2157: float tempAnchor = anchorX;
felix@2157: anchorX = anchorY;
felix@2157: anchorY = tempAnchor;
felix@2157: }
felix@2157:
felix@2157: g2.setFont(getFont());
felix@2157: Shape hotspot = TextUtilities.calculateRotatedStringBounds(
felix@2157: getText(), g2, anchorX, anchorY, getTextAnchor(),
felix@2157: getRotationAngle(), getRotationAnchor());
felix@2157:
felix@2157: // Deviation from superclass: prevent collision.
felix@3023: if (JFreeUtil.collides(hotspot, info.getOwner().getEntityCollection(),
felix@3023: XYAnnotationEntity.class)) {
felix@3023: return;
felix@2157: }
felix@2157:
felix@2157: if (this.getBackgroundPaint() != null) {
felix@2157: g2.setPaint(this.getBackgroundPaint());
felix@2157: g2.fill(hotspot);
felix@2157: }
felix@2157: g2.setPaint(getPaint());
felix@2157: TextUtilities.drawRotatedString(getText(), g2, anchorX, anchorY,
felix@2157: getTextAnchor(), getRotationAngle(), getRotationAnchor());
felix@2157: if (this.isOutlineVisible()) {
felix@2157: g2.setStroke(this.getOutlineStroke());
felix@2157: g2.setPaint(this.getOutlinePaint());
felix@2157: g2.draw(hotspot);
felix@2157: }
felix@2157:
felix@2318: //String toolTip = getToolTipText();
felix@2318: //String url = getURL();
felix@2318: String toolTip = "CollisionFreeXYTextAnnotation";
felix@2318: String url = toolTip;
felix@2318:
felix@2157: if (toolTip != null || url != null) {
felix@2157: addEntity(info, hotspot, rendererIndex, toolTip, url);
felix@2157: }
teichmann@4048: // XXX: DEAD CODE (as long as a hard value is assigned to toolTip
teichmann@4048: /*
felix@2157: else {
felix@2157: addEntity(info, hotspot, rendererIndex,
felix@2157: "CollisionFreeXYTextAnnotation",
felix@2157: "CollisionFreeXYTextAnnotation");
felix@2157: }
teichmann@4048: */
felix@2157: }
felix@2318:
felix@2318: /**
felix@2318: * A utility method for adding an {@link CollisionFreeXYAnnotationEntity} to
felix@2318: * a {@link PlotRenderingInfo} instance.
felix@2318: *
felix@2318: * @param info the plot rendering info (<code>null</code> permitted).
felix@2318: * @param hotspot the hotspot area.
felix@2318: * @param rendererIndex the renderer index.
felix@2318: * @param toolTipText the tool tip text.
felix@2318: * @param urlText the URL text.
felix@2318: */
felix@2318: protected void addEntity(PlotRenderingInfo info,
felix@2318: Shape hotspot, int rendererIndex,
felix@2318: String toolTipText, String urlText) {
felix@2318: if (info == null) {
felix@2318: return;
felix@2318: }
felix@2318: EntityCollection entities = info.getOwner().getEntityCollection();
felix@2318: if (entities == null) {
felix@2318: return;
felix@2318: }
felix@2318: CollisionFreeXYTextAnnotationEntity entity =
felix@2318: new CollisionFreeXYTextAnnotationEntity(hotspot,
felix@2318: rendererIndex, toolTipText, urlText);
felix@2318: entities.add(entity);
sascha@3076: }
felix@2157: }
felix@2157: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :