1 /* 2 * Copyright (c) 2017, 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 import java.awt.Color; 25 import java.awt.Rectangle; 26 import java.awt.Robot; 27 import javax.swing.JFrame; 28 import javax.swing.JPanel; 29 import javax.swing.SwingUtilities; 30 31 /** 32 * @test 33 * @bug 8175301 34 * @summary Java GUI hangs on Windows when Display set to 125% 35 * @run main/othervm -Dsun.java2d.uiScale=2 ScaledFrameBackgroundTest 36 * @run main/othervm -Dsun.java2d.uiScale=2 -Dsun.java2d.d3d=true ScaledFrameBackgroundTest 37 * @run main/othervm -Dsun.java2d.uiScale=2 -Dsun.java2d.opengl=true ScaledFrameBackgroundTest 38 */ 39 public class ScaledFrameBackgroundTest { 40 41 private static final Color BACKGROUND = Color.RED; 42 private static JFrame frame; 43 44 public static void main(String[] args) throws Exception { 45 46 Robot robot = new Robot(); 47 robot.setAutoDelay(50); 48 49 SwingUtilities.invokeAndWait(() -> { 50 frame = new JFrame(); 51 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 52 frame.setSize(400, 300); 53 JPanel panel = new JPanel(); 54 panel.setBackground(BACKGROUND); 55 frame.getContentPane().add(panel); 56 frame.setVisible(true); 57 }); 58 59 robot.waitForIdle(); 60 61 Rectangle[] rects = new Rectangle[1]; 62 SwingUtilities.invokeAndWait(() -> { 63 rects[0] = frame.getBounds(); 64 }); 65 66 Rectangle bounds = rects[0]; 67 68 int x = bounds.x + bounds.width / 4; 69 int y = bounds.y + bounds.height / 4; 70 71 Color color = robot.getPixelColor(x, y); 72 System.out.println("background: " + BACKGROUND); 73 System.out.println("color : " + color); 74 75 if (!BACKGROUND.equals(color)) { 76 throw new RuntimeException("Wrong backgound color!"); 77 } 78 79 x = bounds.x + 3 * bounds.width / 4; 80 y = bounds.y + 3 * bounds.height / 4; 81 82 color = robot.getPixelColor(x, y); 83 System.out.println("background: " + BACKGROUND); 84 System.out.println("color : " + color); 85 86 if (!BACKGROUND.equals(color)) { 87 throw new RuntimeException("Wrong backgound color!"); 88 } 89 } 90 }