| Line | Hits | Source |
|---|---|---|
| 1 | /* | |
| 2 | * Copyright (c) 2005, the JUNG Project and the Regents of the University of | |
| 3 | * California All rights reserved. | |
| 4 | * | |
| 5 | * This software is open-source under the BSD license; see either "license.txt" | |
| 6 | * or http://jung.sourceforge.net/license.txt for a description. | |
| 7 | * | |
| 8 | * Created on Aug 1, 2005 | |
| 9 | */ | |
| 10 | ||
| 11 | package edu.uci.ics.jung.graph.decorators; | |
| 12 | ||
| 13 | import java.awt.Image; | |
| 14 | import java.awt.Shape; | |
| 15 | import java.awt.geom.AffineTransform; | |
| 16 | import java.util.HashMap; | |
| 17 | import java.util.Map; | |
| 18 | ||
| 19 | import javax.swing.Icon; | |
| 20 | import javax.swing.ImageIcon; | |
| 21 | ||
| 22 | import edu.uci.ics.jung.graph.Vertex; | |
| 23 | import edu.uci.ics.jung.visualization.FourPassImageShaper; | |
| 24 | ||
| 25 | /** | |
| 26 | * A default implementation that stores images in a Map keyed on the | |
| 27 | * vertex. Also applies a shaping function to images to extract the | |
| 28 | * shape of the opaque part of a transparent image. | |
| 29 | * | |
| 30 | * @author Tom Nelson - RABA Technologies | |
| 31 | * | |
| 32 | * | |
| 33 | */public class VertexIconAndShapeFunction extends DefaultVertexIconFunction | |
| 34 | implements VertexShapeFunction { | |
| 35 | ||
| 36 | 0 | protected Map shapeMap = new HashMap(); |
| 37 | protected VertexShapeFunction delegate; | |
| 38 | /** | |
| 39 | * | |
| 40 | * | |
| 41 | */ | |
| 42 | 0 | public VertexIconAndShapeFunction(VertexShapeFunction delegate) { |
| 43 | 0 | this.delegate = delegate; |
| 44 | 0 | } |
| 45 | ||
| 46 | /** | |
| 47 | * @return Returns the delegate. | |
| 48 | */ | |
| 49 | public VertexShapeFunction getDelegate() { | |
| 50 | 0 | return delegate; |
| 51 | } | |
| 52 | ||
| 53 | /** | |
| 54 | * @param delegate The delegate to set. | |
| 55 | */ | |
| 56 | public void setDelegate(VertexShapeFunction delegate) { | |
| 57 | 0 | this.delegate = delegate; |
| 58 | 0 | } |
| 59 | ||
| 60 | /** | |
| 61 | * get the shape from the image. If not available, get | |
| 62 | * the shape from the delegate VertexShapeFunction | |
| 63 | */ | |
| 64 | public Shape getShape(Vertex v) { | |
| 65 | 0 | Icon icon = getIcon(v); |
| 66 | 0 | if (icon != null && icon instanceof ImageIcon) { |
| 67 | 0 | Image image = ((ImageIcon) icon).getImage(); |
| 68 | 0 | Shape shape = (Shape) shapeMap.get(image); |
| 69 | 0 | if (shape == null) { |
| 70 | 0 | shape = FourPassImageShaper.getShape(image, 30); |
| 71 | 0 | if(shape.getBounds().getWidth() > 0 && |
| 72 | shape.getBounds().getHeight() > 0) { | |
| 73 | // don't cache a zero-sized shape, wait for the image | |
| 74 | // to be ready | |
| 75 | 0 | int width = image.getWidth(null); |
| 76 | 0 | int height = image.getHeight(null); |
| 77 | 0 | AffineTransform transform = AffineTransform |
| 78 | .getTranslateInstance(-width / 2, -height / 2); | |
| 79 | 0 | shape = transform.createTransformedShape(shape); |
| 80 | 0 | shapeMap.put(image, shape); |
| 81 | } | |
| 82 | } | |
| 83 | 0 | return shape; |
| 84 | } else { | |
| 85 | 0 | return delegate.getShape(v); |
| 86 | } | |
| 87 | ||
| 88 | } | |
| 89 | } |
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