| /* |
| * Copyright (c) 2009, 2015, 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 |
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| * published by the Free Software Foundation. |
| * |
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| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
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| */ |
| |
| /* @test |
| @bug 6683775 6794764 |
| @summary Painting artifacts is seen when panel is made setOpaque(false) for a translucent window |
| @author Alexander Potochkin |
| @modules java.desktop/com.sun.awt |
| java.desktop/sun.awt |
| @run main bug6683775 |
| */ |
| |
| import com.sun.awt.AWTUtilities; |
| |
| import javax.swing.*; |
| import java.awt.*; |
| import java.awt.image.BufferedImage; |
| |
| public class bug6683775 { |
| static final int LOC = 100, |
| SIZE = 200; |
| |
| public static void main(String[] args) throws Exception { |
| GraphicsConfiguration gc = getGC(); |
| if (!AWTUtilities.isTranslucencySupported( |
| AWTUtilities.Translucency.PERPIXEL_TRANSLUCENT) |
| || gc == null) { |
| return; |
| } |
| Robot robot = new Robot(); |
| final JFrame testFrame = new JFrame(gc); |
| |
| SwingUtilities.invokeAndWait(() -> { |
| JFrame backgroundFrame = new JFrame("Background frame"); |
| backgroundFrame.setUndecorated(true); |
| JPanel panel = new JPanel(); |
| panel.setBackground(Color.RED); |
| backgroundFrame.add(panel); |
| backgroundFrame.setBounds(LOC, LOC, SIZE, SIZE); |
| backgroundFrame.setVisible(true); |
| |
| testFrame.setUndecorated(true); |
| JPanel p = new JPanel(); |
| p.setOpaque(false); |
| testFrame.add(p); |
| AWTUtilities.setWindowOpaque(testFrame, false); |
| testFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); |
| testFrame.setBounds(LOC, LOC, SIZE, SIZE); |
| testFrame.setVisible(true); |
| }); |
| |
| robot.waitForIdle(); |
| Thread.sleep(1500); |
| |
| //robot.getPixelColor() didn't work right for some reason |
| BufferedImage capture = |
| robot.createScreenCapture(new Rectangle(LOC, LOC, SIZE, SIZE)); |
| |
| int redRGB = Color.RED.getRGB(); |
| if (redRGB != capture.getRGB(SIZE/2, SIZE/2)) { |
| throw new RuntimeException("Transparent frame is not transparent!"); |
| } |
| } |
| |
| private static GraphicsConfiguration getGC() { |
| GraphicsConfiguration transparencyCapableGC = |
| GraphicsEnvironment.getLocalGraphicsEnvironment() |
| .getDefaultScreenDevice().getDefaultConfiguration(); |
| if (!AWTUtilities.isTranslucencyCapable(transparencyCapableGC)) { |
| transparencyCapableGC = null; |
| |
| GraphicsEnvironment env = |
| GraphicsEnvironment.getLocalGraphicsEnvironment(); |
| GraphicsDevice[] devices = env.getScreenDevices(); |
| |
| for (int i = 0; i < devices.length && transparencyCapableGC == null; i++) { |
| GraphicsConfiguration[] configs = devices[i].getConfigurations(); |
| for (int j = 0; j < configs.length && transparencyCapableGC == null; j++) { |
| if (AWTUtilities.isTranslucencyCapable(configs[j])) { |
| transparencyCapableGC = configs[j]; |
| } |
| } |
| } |
| } |
| return transparencyCapableGC; |
| } |
| } |