1 /* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package sun.awt.image; 26 27 import java.awt.Image; 28 import java.awt.Graphics; 29 import java.awt.image.BufferedImage; 30 import java.util.Arrays; 31 import java.util.List; 32 import java.util.function.Function; 33 34 public class MultiResolutionBufferedImage extends BufferedImage 35 implements MultiResolutionImage { 36 37 Image[] resolutionVariants; 38 int baseIndex; 39 40 public MultiResolutionBufferedImage(int imageType, int baseIndex, Image... images) { 41 super(images[baseIndex].getWidth(null), images[baseIndex].getHeight(null), 42 imageType); 43 this.baseIndex = baseIndex; 44 this.resolutionVariants = images; 45 Graphics g = getGraphics(); 46 g.drawImage(images[baseIndex], 0, 0, null); 47 g.dispose(); 48 images[baseIndex] = this; 49 } 50 51 @Override 52 public Image getResolutionVariant(int width, int height) { 53 for (Image image : resolutionVariants) { 54 if (width <= image.getWidth(null) && height <= image.getHeight(null)) { 55 return image; 56 } 57 } 58 return this; 59 } 60 61 @Override 62 public List<Image> getResolutionVariants() { 63 return Arrays.asList(resolutionVariants); 64 } 65 66 public MultiResolutionBufferedImage map(Function<Image, Image> mapper) { 67 return new MultiResolutionBufferedImage(getType(), baseIndex, 68 Arrays.stream(resolutionVariants).map(mapper) 69 .toArray(length -> new Image[length])); 70 } 71 }