1/*
2 * ProGuard -- shrinking, optimization, obfuscation, and preverification
3 *             of Java bytecode.
4 *
5 * Copyright (c) 2002-2009 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 VariableFont varies in size with respect to its Timing.
27 *
28 * @author Eric Lafortune
29 */
30public class VariableSizeFont implements VariableFont
31{
32    private final Font           font;
33    private final VariableDouble size;
34
35    private float cachedSize = -1.0f;
36    private Font  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 font, VariableDouble size)
45    {
46        this.font = font;
47        this.size = size;
48    }
49
50
51    // Implementation for VariableFont.
52
53    public Font 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