TimeSwitchSprite.java revision 8a6199f0c36a778f22394364347a301b0b28e94b 
1/*
2 * ProGuard -- shrinking, optimization, obfuscation, and preverification
3 *             of Java bytecode.
4 *
5 * Copyright (c) 2002-2013 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 displays another Sprite in a given time interval.
27 * The time of the encapsulated Sprite is shifted by the start time.
28 *
29 * @author Eric Lafortune
30 */
31public class TimeSwitchSprite implements Sprite
32{
33    private final long   onTime;
34    private final long offTime;
35    private final Sprite sprite;
36
37
38    /**
39     * Creates a new TimeSwitchSprite for displaying a given Sprite starting at
40     * a given time.
41     * @param onTime the start time.
42     * @param sprite the toggled Sprite.
43     */
44    public TimeSwitchSprite(long onTime, Sprite sprite)
45    {
46        this(onTime, 0L, sprite);
47    }
48
49
50    /**
51     * Creates a new TimeSwitchSprite for displaying a given Sprite in a given
52     * time interval.
53     * @param onTime  the start time.
54     * @param offTime the stop time.
55     * @param sprite  the toggled Sprite.
56     */
57    public TimeSwitchSprite(long onTime, long offTime, Sprite sprite)
58    {
59        this.onTime  = onTime;
60        this.offTime = offTime;
61        this.sprite  = sprite;
62    }
63
64
65    // Implementation for Sprite.
66
67    public void paint(Graphics graphics, long time)
68    {
69        if (time >= onTime && (offTime <= 0 || time <= offTime))
70        {
71            sprite.paint(graphics, time - onTime);
72        }
73
74    }
75}
76