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


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.Graphics JavaDoc;
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  */
31 public class TimeSwitchSprite implements Sprite
32 {
33     private long onTime;
34     private long offtime;
35     private Sprite sprite;
36
37
38     /**
39      * Creates a new TimeSwitchSprite for displaying a given Sprite starting at a
40      * 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 JavaDoc graphics, long time)
68     {
69         if (time >= onTime && (offtime <= 0 || time <= offtime))
70         {
71             sprite.paint(graphics, time - onTime);
72         }
73
74     }
75 }
76
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