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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 | } |
this report was generated by version 1.0.5 of jcoverage. |
copyright © 2003, jcoverage ltd. all rights reserved. |