| 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 | } |