1 | // Jomic - a viewer for comic book archives. |
2 | // Copyright (C) 2004-2011 Thomas Aglassinger |
3 | // |
4 | // This program is free software: you can redistribute it and/or modify |
5 | // it under the terms of the GNU General Public License as published by |
6 | // the Free Software Foundation, either version 3 of the License, or |
7 | // (at your option) any later version. |
8 | // |
9 | // This program is distributed in the hope that it will be useful, |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | // GNU General Public License for more details. |
13 | // |
14 | // You should have received a copy of the GNU General Public License |
15 | // along with this program. If not, see <http://www.gnu.org/licenses/>. |
16 | package net.sf.jomic.ui; |
17 | |
18 | import java.awt.Dimension; |
19 | import java.awt.Graphics; |
20 | import java.awt.Graphics2D; |
21 | import java.awt.geom.AffineTransform; |
22 | import java.awt.image.RenderedImage; |
23 | |
24 | import javax.swing.JComponent; |
25 | |
26 | /** |
27 | * JComponent to show a RenderedImage. |
28 | * |
29 | * @author Thomas Aglassinger |
30 | */ |
31 | public class RenderedImageView extends JComponent |
32 | { |
33 | private RenderedImage image; |
34 | private Object setMutex = RenderedImageView.class.getName() + ".setMutex"; |
35 | |
36 | public RenderedImageView() { |
37 | super(); |
38 | } |
39 | |
40 | public void set(RenderedImage newImage) { |
41 | synchronized (setMutex) { |
42 | image = newImage; |
43 | } |
44 | revalidate(); |
45 | repaint(); |
46 | } |
47 | |
48 | public Dimension getPreferredSize() { |
49 | Dimension result; |
50 | |
51 | synchronized (setMutex) { |
52 | if (image == null) { |
53 | // TODO: Yield preferred size according to screen size. |
54 | result = new Dimension(400, 400); |
55 | } else { |
56 | result = new Dimension(image.getWidth(), image.getHeight()); |
57 | } |
58 | } |
59 | return result; |
60 | } |
61 | |
62 | protected void paintComponent(Graphics g) { |
63 | super.paintComponents(g); |
64 | synchronized (setMutex) { |
65 | if (image != null) { |
66 | Graphics2D g2d = (Graphics2D) g; |
67 | int topX = (getWidth() - image.getWidth()) / 2; |
68 | int topY = (getHeight() - image.getHeight()) / 2; |
69 | |
70 | g2d.drawRenderedImage(image, AffineTransform.getTranslateInstance(topX, topY)); |
71 | } |
72 | } |
73 | } |
74 | } |