Magnolia Imaging Module 3.4.2-SUPPORT-10161
File AbstractCropAndResize.java
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| AbstractCropAndResize | 49 | 4 | 40% | 2 | 0 |
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| 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; | |
| 35 | ||
| 36 | import info.magnolia.imaging.ImagingException; | |
| 37 | import info.magnolia.imaging.ParameterProvider; | |
| 38 | import info.magnolia.imaging.operations.ImageOperation; | |
| 39 | import info.magnolia.imaging.operations.cropresize.resizers.BasicResizer; | |
| 40 | ||
| 41 | import java.awt.image.BufferedImage; | |
| 42 | ||
| 43 | /** | |
| 44 | * Subclasses of this determine which portion of the source image is taken into account, | |
| 45 | * and what final dimensions the image needs to be resized to. | |
| 46 | * | |
| 47 | * @param <P> type of ParameterProvider | |
| 48 | */ | |
| 49 | public abstract class AbstractCropAndResize<P extends ParameterProvider<?>> implements ImageOperation<P> { | |
| 50 | private Resizer resizer = new BasicResizer(); | |
| 51 | ||
| 52 | 35 |  @Override |
| 53 | public BufferedImage apply(BufferedImage source, P params) throws ImagingException { | |
| 54 | 35 | final Coords coords = getCroopCoords(source, params); |
| 55 | 35 | final Size effectiveTargetSize = getEffectiveTargetSize(source, coords, params); |
| 56 | 35 | return resize(source, coords, effectiveTargetSize); |
| 57 | } | |
| 58 | ||
| 59 | /** | |
| 60 | * Determines the coordinates of the cropping to apply on the source image. | |
| 61 | * If no cropping needs to happen, return new Coords(0, 0, source.getWidth(), source.getHeight()). | |
| 62 | */ | |
| 63 | protected abstract Coords getCroopCoords(BufferedImage source, P params) throws ImagingException; | |
| 64 | ||
| 65 | /** | |
| 66 | * Determines the actual size for the resized image based on the source image, the crop coordinates | |
| 67 | * calculated by {@link #getCroopCoords} and the given ParameterProvider. | |
| 68 | */ | |
| 69 | protected abstract Size getEffectiveTargetSize(BufferedImage source, Coords cropCoords, P params); | |
| 70 | ||
| 71 | 44 | protected BufferedImage resize(BufferedImage src, Coords srcCoords, Size targetSize) { |
| 72 | 44 | return getResizer().resize(src, srcCoords, targetSize); |
| 73 | } | |
| 74 | ||
| 75 | public Resizer getResizer() { |
|
| 76 | return resizer; | |
| 77 | } | |
| 78 | ||
| 79 | public void setResizer(Resizer resizer) { |
|
| 80 | this.resizer = resizer; | |
| 81 | } | |
| 82 | ||
| 83 | } |