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Java > Open Source Codes > proguard > gui > splash > ClipSprite


1 /*
2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
3  * of Java bytecode.
4  *
5  * Copyright (c) 2002-2007 Eric Lafortune (eric@graphics.cornell.edu)
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the Free
9  * Software Foundation; either version 2 of the License, or (at your option)
10  * any later version.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, write to the Free Software Foundation, Inc.,
19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */

21 package proguard.gui.splash;
22
23 import java.awt.*;
24
25 /**
26  * This Sprite encapsulates another Sprite, which is clipped by a clip Sprite.
27  *
28  * @author Eric Lafortune
29  */

30 public class ClipSprite implements Sprite
31 {
32     private VariableColor insideClipColor;
33     private VariableColor outsideClipColor;
34     private Sprite clipSprite;
35     private Sprite sprite;
36
37
38     /**
39      * Creates a new ClipSprite.
40      * @param insideClipColor the background color inside the clip sprite.
41      * @param outsideClipColor the background color outside the clip sprite.
42      * @param clipSprite the clip Sprite.
43      * @param sprite the clipped Sprite.
44      */

45     public ClipSprite(VariableColor insideClipColor,
46                       VariableColor outsideClipColor,
47                       Sprite clipSprite,
48                       Sprite sprite)
49     {
50         this.insideClipColor = insideClipColor;
51         this.outsideClipColor = outsideClipColor;
52         this.clipSprite = clipSprite;
53         this.sprite = sprite;
54     }
55
56
57     // Implementation for Sprite.
58

59     public void paint(Graphics graphics, long time)
60     {
61         // Clear the background.
62
Color outsideColor = outsideClipColor.getColor(time);
63         Rectangle clip = graphics.getClipBounds();
64         graphics.setPaintMode();
65         graphics.setColor(outsideColor);
66         graphics.fillRect(0, 0, clip.width, clip.height);
67
68         // Draw the sprite in XOR mode.
69
OverrideGraphics2D g = new OverrideGraphics2D((Graphics2D)graphics);
70         Color insideColor = insideClipColor.getColor(time);
71         g.setOverrideXORMode(insideColor);
72         sprite.paint(g, time);
73         g.setOverrideXORMode(null);
74
75         // Clear the clip area.
76
g.setOverrideColor(insideColor);
77         clipSprite.paint(g, time);
78         g.setOverrideColor(null);
79
80         // Draw the sprite in XOR mode.
81
g.setOverrideXORMode(insideColor);
82         sprite.paint(g, time);
83         g.setOverrideXORMode(null);
84     }
85 }
86
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