1 /* 2 * Copyright (c) 2009, 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 24 /* @test 25 @bug 6683775 6794764 26 @summary Painting artifacts is seen when panel is made setOpaque(false) for a translucent window 27 @author Alexander Potochkin 28 @modules java.desktop/com.sun.awt 29 java.desktop/sun.awt 30 @run main bug6683775 31 */ 32 33 import com.sun.awt.AWTUtilities; 34 35 import javax.swing.*; 36 import java.awt.*; 37 import java.awt.image.BufferedImage; 38 39 public class bug6683775 { 40 static final int LOC = 100, 41 SIZE = 200; 42 43 public static void main(String[] args) throws Exception { 44 GraphicsConfiguration gc = getGC(); 45 if (!AWTUtilities.isTranslucencySupported( 46 AWTUtilities.Translucency.PERPIXEL_TRANSLUCENT) 47 || gc == null) { 48 return; 49 } 50 Robot robot = new Robot(); 51 final JFrame testFrame = new JFrame(gc); 52 53 SwingUtilities.invokeAndWait(() -> { 54 JFrame backgroundFrame = new JFrame("Background frame"); 55 backgroundFrame.setUndecorated(true); 56 JPanel panel = new JPanel(); 57 panel.setBackground(Color.RED); 58 backgroundFrame.add(panel); 59 backgroundFrame.setBounds(LOC, LOC, SIZE, SIZE); 60 backgroundFrame.setVisible(true); 61 62 testFrame.setUndecorated(true); 63 JPanel p = new JPanel(); 64 p.setOpaque(false); 65 testFrame.add(p); 66 AWTUtilities.setWindowOpaque(testFrame, false); 67 testFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 68 testFrame.setBounds(LOC, LOC, SIZE, SIZE); 69 testFrame.setVisible(true); 70 }); 71 72 robot.waitForIdle(); 73 Thread.sleep(1500); 74 75 //robot.getPixelColor() didn't work right for some reason 76 BufferedImage capture = 77 robot.createScreenCapture(new Rectangle(LOC, LOC, SIZE, SIZE)); 78 79 int redRGB = Color.RED.getRGB(); 80 if (redRGB != capture.getRGB(SIZE/2, SIZE/2)) { 81 throw new RuntimeException("Transparent frame is not transparent!"); 82 } 83 } 84 85 private static GraphicsConfiguration getGC() { 86 GraphicsConfiguration transparencyCapableGC = 87 GraphicsEnvironment.getLocalGraphicsEnvironment() 88 .getDefaultScreenDevice().getDefaultConfiguration(); 89 if (!AWTUtilities.isTranslucencyCapable(transparencyCapableGC)) { 90 transparencyCapableGC = null; 91 92 GraphicsEnvironment env = 93 GraphicsEnvironment.getLocalGraphicsEnvironment(); 94 GraphicsDevice[] devices = env.getScreenDevices(); 95 96 for (int i = 0; i < devices.length && transparencyCapableGC == null; i++) { 97 GraphicsConfiguration[] configs = devices[i].getConfigurations(); 98 for (int j = 0; j < configs.length && transparencyCapableGC == null; j++) { 99 if (AWTUtilities.isTranslucencyCapable(configs[j])) { 100 transparencyCapableGC = configs[j]; 101 } 102 } 103 } 104 } 105 return transparencyCapableGC; 106 } 107 }