| /* |
| * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| import java.awt.Color; |
| import java.awt.Graphics; |
| import java.awt.Graphics2D; |
| import java.awt.Image; |
| import java.awt.Toolkit; |
| import java.awt.image.BufferedImage; |
| import java.awt.image.ImageObserver; |
| import static java.awt.image.ImageObserver.*; |
| import java.io.File; |
| import javax.imageio.ImageIO; |
| /* |
| * @test |
| * @bug 8065627 |
| * @summary Animated GIFs fail to display on a HiDPI display |
| * @author Alexander Scherbatiy |
| * @run main MultiResolutionImageObserverTest |
| */ |
| |
| public class MultiResolutionImageObserverTest { |
| |
| private static final int TIMEOUT = 500; |
| |
| public static void main(String[] args) throws Exception { |
| |
| generateImages(); |
| Toolkit toolkit = Toolkit.getDefaultToolkit(); |
| Image image = Toolkit.getDefaultToolkit().getImage(IMAGE_NAME_1X); |
| |
| LoadImageObserver sizeObserver |
| = new LoadImageObserver(WIDTH | HEIGHT); |
| toolkit.prepareImage(image, -1, -1, sizeObserver); |
| waitForImageLoading(sizeObserver, "The first observer is not called"); |
| |
| LoadImageObserver bitsObserver |
| = new LoadImageObserver(SOMEBITS | FRAMEBITS | ALLBITS); |
| |
| BufferedImage buffImage = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB); |
| Graphics2D g2d = (Graphics2D) buffImage.createGraphics(); |
| g2d.scale(2, 2); |
| g2d.drawImage(image, 0, 0, bitsObserver); |
| waitForImageLoading(bitsObserver, "The second observer is not called!"); |
| g2d.dispose(); |
| } |
| |
| private static void waitForImageLoading(LoadImageObserver observer, |
| String errorMessage) throws Exception { |
| |
| long endTime = System.currentTimeMillis() + TIMEOUT; |
| |
| while (!observer.loaded && System.currentTimeMillis() < endTime) { |
| Thread.sleep(TIMEOUT / 10); |
| } |
| |
| if (!observer.loaded) { |
| throw new RuntimeException(errorMessage); |
| } |
| } |
| |
| private static final String IMAGE_NAME_1X = "image.png"; |
| private static final String IMAGE_NAME_2X = "image@2x.png"; |
| |
| private static void generateImages() throws Exception { |
| generateImage(1); |
| generateImage(2); |
| } |
| |
| private static void generateImage(int scale) throws Exception { |
| BufferedImage image = new BufferedImage( |
| scale * 200, scale * 300, |
| BufferedImage.TYPE_INT_RGB); |
| Graphics g = image.createGraphics(); |
| g.setColor(scale == 1 ? Color.GREEN : Color.BLUE); |
| g.fillRect(0, 0, scale * 200, scale * 300); |
| File file = new File(scale == 1 ? IMAGE_NAME_1X : IMAGE_NAME_2X); |
| ImageIO.write(image, "png", file); |
| g.dispose(); |
| } |
| |
| private static class LoadImageObserver implements ImageObserver { |
| |
| private final int infoflags; |
| private boolean loaded; |
| |
| public LoadImageObserver(int flags) { |
| this.infoflags = flags; |
| } |
| |
| @Override |
| public boolean imageUpdate(Image img, int flags, int x, int y, int width, int height) { |
| |
| if ((flags & infoflags) != 0) { |
| loaded = true; |
| } |
| |
| return !loaded; |
| } |
| } |
| } |