BitmaskVolatileImage.java revision 14851:980da45565c8
1/* 2 * Copyright (c) 2015, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24import java.awt.AlphaComposite; 25import java.awt.Color; 26import java.awt.Graphics2D; 27import java.awt.GraphicsConfiguration; 28import java.awt.GraphicsEnvironment; 29import java.awt.Image; 30import java.awt.image.BufferedImage; 31import java.awt.image.VolatileImage; 32 33import static java.awt.Transparency.BITMASK; 34 35/** 36 * @test 37 * @key headful 38 * @bug 7188942 39 * @summary We should get correct volatile image, when we use BITMASK 40 * transparency 41 */ 42public final class BitmaskVolatileImage { 43 44 public static final int S = 8; 45 46 public static void main(final String[] args) { 47 GraphicsConfiguration gc = 48 GraphicsEnvironment.getLocalGraphicsEnvironment() 49 .getDefaultScreenDevice().getDefaultConfiguration(); 50 VolatileImage vi = gc.createCompatibleVolatileImage(S, S, BITMASK); 51 BufferedImage ci = gc.createCompatibleImage(S, S, BITMASK); 52 53 int attempt = 0; 54 do { 55 if (++attempt > 10) { 56 throw new RuntimeException("Too many attempts: " + attempt); 57 } 58 vi.validate(gc); 59 test(vi, ci, gc); 60 } while (vi.contentsLost()); 61 } 62 63 private static void test(VolatileImage vi, BufferedImage ci, GraphicsConfiguration gc) { 64 for (int r = 0; r <= 255; ++r) { 65 for (int a = 0; a <= 255; ++a) { 66 fill(vi, new Color(r, 0, 0, a)); 67 fill(ci, new Color(r, 0, 0, a)); 68 validate(ci, vi.getSnapshot()); 69 } 70 } 71 } 72 73 private static void fill(Image image, Color color) { 74 Graphics2D g2d = (Graphics2D) image.getGraphics(); 75 g2d.setColor(color); 76 g2d.setComposite(AlphaComposite.Src); 77 g2d.fillRect(0, 0, S, S); 78 g2d.dispose(); 79 } 80 81 private static void validate(BufferedImage ci, BufferedImage snapshot) { 82 for (int y = 0; y < ci.getHeight(); y++) { 83 for (int x = 0; x < ci.getWidth(); x++) { 84 int ci_rgb = ci.getRGB(x, y); 85 int vi_rgb = snapshot.getRGB(x, y); 86 if (ci_rgb != vi_rgb) { 87 System.err.println("Exp:" + Integer.toHexString(ci_rgb)); 88 System.err.println("Actual:" + Integer.toHexString(vi_rgb)); 89 throw new RuntimeException("Colors mismatch!"); 90 } 91 } 92 } 93 } 94} 95