01: /*
02: * ProGuard -- shrinking, optimization, obfuscation, and preverification
03: * of Java bytecode.
04: *
05: * Copyright (c) 2002-2007 Eric Lafortune (eric@graphics.cornell.edu)
06: *
07: * This program is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU General Public License as published by the Free
09: * 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: private final VariableColor insideClipColor;
32: private final VariableColor outsideClipColor;
33: private final Sprite clipSprite;
34: private final Sprite sprite;
35:
36: /**
37: * Creates a new ClipSprite.
38: * @param insideClipColor the background color inside the clip sprite.
39: * @param outsideClipColor the background color outside the clip sprite.
40: * @param clipSprite the clip Sprite.
41: * @param sprite the clipped Sprite.
42: */
43: public ClipSprite(VariableColor insideClipColor,
44: VariableColor outsideClipColor, Sprite clipSprite,
45: Sprite sprite) {
46: this .insideClipColor = insideClipColor;
47: this .outsideClipColor = outsideClipColor;
48: this .clipSprite = clipSprite;
49: this .sprite = sprite;
50: }
51:
52: // Implementation for Sprite.
53:
54: public void paint(Graphics graphics, long time) {
55: // Clear the background.
56: Color outsideColor = outsideClipColor.getColor(time);
57: Rectangle clip = graphics.getClipBounds();
58: graphics.setPaintMode();
59: graphics.setColor(outsideColor);
60: graphics.fillRect(0, 0, clip.width, clip.height);
61:
62: // Draw the sprite in XOR mode.
63: OverrideGraphics2D g = new OverrideGraphics2D(
64: (Graphics2D) graphics);
65: Color insideColor = insideClipColor.getColor(time);
66: g.setOverrideXORMode(insideColor);
67: sprite.paint(g, time);
68: g.setOverrideXORMode(null);
69:
70: // Clear the clip area.
71: g.setOverrideColor(insideColor);
72: clipSprite.paint(g, time);
73: g.setOverrideColor(null);
74:
75: // Draw the sprite in XOR mode.
76: g.setOverrideXORMode(insideColor);
77: sprite.paint(g, time);
78: g.setOverrideXORMode(null);
79: }
80: }
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