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ScaleAreaAveragingResizer | 50 | 9 | 0% | 1 | 0 |
1 | /** | |
2 | * This file Copyright (c) 2009-2018 Magnolia International | |
3 | * Ltd. (http://www.magnolia-cms.com). All rights reserved. | |
4 | * | |
5 | * | |
6 | * This file is dual-licensed under both the Magnolia | |
7 | * Network Agreement and the GNU General Public License. | |
8 | * You may elect to use one or the other of these licenses. | |
9 | * | |
10 | * This file is distributed in the hope that it will be | |
11 | * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the | |
12 | * implied warranty of MERCHANTABILITY or FITNESS FOR A | |
13 | * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT. | |
14 | * Redistribution, except as permitted by whichever of the GPL | |
15 | * or MNA you select, is prohibited. | |
16 | * | |
17 | * 1. For the GPL license (GPL), you can redistribute and/or | |
18 | * modify this file under the terms of the GNU General | |
19 | * Public License, Version 3, as published by the Free Software | |
20 | * Foundation. You should have received a copy of the GNU | |
21 | * General Public License, Version 3 along with this program; | |
22 | * if not, write to the Free Software Foundation, Inc., 51 | |
23 | * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
24 | * | |
25 | * 2. For the Magnolia Network Agreement (MNA), this file | |
26 | * and the accompanying materials are made available under the | |
27 | * terms of the MNA which accompanies this distribution, and | |
28 | * is available at http://www.magnolia-cms.com/mna.html | |
29 | * | |
30 | * Any modifications to this file must keep this entire header | |
31 | * intact. | |
32 | * | |
33 | */ | |
34 | package info.magnolia.imaging.operations.cropresize.resizers; | |
35 | ||
36 | import info.magnolia.imaging.operations.cropresize.Coords; | |
37 | import info.magnolia.imaging.operations.cropresize.Resizer; | |
38 | import info.magnolia.imaging.operations.cropresize.Size; | |
39 | ||
40 | import java.awt.Graphics2D; | |
41 | import java.awt.Image; | |
42 | import java.awt.image.BufferedImage; | |
43 | import java.awt.image.ColorModel; | |
44 | import java.awt.image.WritableRaster; | |
45 | ||
46 | /** | |
47 | * This implementation uses the discouraged {@link java.awt.Image#getScaledInstance} method, | |
48 | * which has rather poor performance, but unmatched quality. | |
49 | */ | |
50 | public class ScaleAreaAveragingResizer implements Resizer { | |
51 | 2 | ![]() |
52 | public BufferedImage resize(BufferedImage src, Coords srcCoords, Size targetSize) { | |
53 | ||
54 | 2 | final BufferedImage cropped = src.getSubimage(srcCoords.getX1(), srcCoords.getY1(), srcCoords.getWidth(), srcCoords.getHeight()); |
55 | 2 | final Image img = cropped.getScaledInstance(targetSize.getWidth(), targetSize.getHeight(), Image.SCALE_AREA_AVERAGING); |
56 | ||
57 | 2 | final ColorModel cm = src.getColorModel(); |
58 | 2 | final WritableRaster raster = cm.createCompatibleWritableRaster(targetSize.getWidth(), targetSize.getHeight()); |
59 | 2 | final BufferedImage dst = new BufferedImage(cm, raster, cm.isAlphaPremultiplied(), null); |
60 | 2 | final Graphics2D g = dst.createGraphics(); |
61 | 2 | g.drawImage(img, null, null); |
62 | 2 | g.dispose(); |
63 | 2 | return dst; |
64 | } | |
65 | } |