1/*
2 * ProGuard -- shrinking, optimization, obfuscation, and preverification
3 *             of Java bytecode.
4 *
5 * Copyright (c) 2002-2014 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 */
21package proguard.gui.splash;
22
23import java.awt.*;
24
25/**
26 * This Sprite encapsulates another Sprite, which is clipped by a clip Sprite.
27 *
28 * @author Eric Lafortune
29 */
30public class ClipSprite implements Sprite
31{
32    private final VariableColor insideClipColor;
33    private final VariableColor outsideClipColor;
34    private final Sprite        clipSprite;
35    private final 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