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


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.Font JavaDoc;
24
25 /**
26  * This VariableFont varies in size with respect to its Timing.
27  *
28  * @author Eric Lafortune
29  */
30 public class VariableSizeFont implements VariableFont
31 {
32     private Font JavaDoc font;
33     private VariableDouble size;
34
35     private float cachedSize = -1.0f;
36     private Font JavaDoc cachedFont;
37
38
39     /**
40      * Creates a new VariableSizeFont
41      * @param font the base font.
42      * @param size the variable size of the font.
43      */
44     public VariableSizeFont(Font JavaDoc font, VariableDouble size)
45     {
46         this.font = font;
47         this.size = size;
48     }
49
50
51     // Implementation for VariableFont.
52
53     public Font JavaDoc getFont(long time)
54     {
55         float s = (float)size.getDouble(time);
56
57         if (s != cachedSize)
58         {
59             cachedSize = s;
60             cachedFont = font.deriveFont((float)s);
61         }
62
63         return cachedFont;
64     }
65 }
66
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