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