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 24 import java.awt.BorderLayout; 25 import java.awt.Canvas; 26 import java.awt.Color; 27 import java.awt.Frame; 28 import java.awt.Graphics; 29 import java.awt.Panel; 30 import java.awt.Rectangle; 31 import java.awt.Robot; 32 import java.awt.image.BufferedImage; 33 import javax.imageio.ImageIO; 34 import javax.swing.UIManager; 35 36 /* @test 37 * @bug 8073320 8137571 38 * @summary Windows and Linux HiDPI Graphics support 39 * @author Alexander Scherbatiy 40 * @requires (os.family == "windows" | os.family == "linux") 41 * @run main/othervm -Dsun.java2d.uiScale=2 HiDPIRobotScreenCaptureTest 42 */ 43 public class HiDPIRobotScreenCaptureTest { 44 45 private static final Color[] COLORS = { 46 Color.GREEN, Color.BLUE, Color.ORANGE, Color.RED}; 47 48 private static final String[] SUPPORTED_LAFS = { 49 "com.sun.java.swing.plaf.windows.WindowsLookAndFeel", 50 "com.sun.java.swing.plaf.gtk.GTKLookAndFeel" 51 }; 52 53 public static void main(String[] args) throws Exception { 54 55 if (!setSupportedLAF()) { 56 return; 57 } 58 59 Frame frame = new Frame(); 60 frame.setBounds(10, 20, 200, 150); 61 frame.setUndecorated(true); 62 63 Panel panel = new Panel(new BorderLayout()); 64 Canvas canvas = new Canvas() { 65 @Override 66 public void paint(Graphics g) { 67 super.paint(g); 68 int w = getWidth(); 69 int h = getHeight(); 70 g.setColor(COLORS[0]); 71 g.fillRect(0, 0, w / 2, h / 2); 72 g.setColor(COLORS[1]); 73 g.fillRect(w / 2, 0, w / 2, h / 2); 74 g.setColor(COLORS[2]); 75 g.fillRect(0, h / 2, w / 2, h / 2); 76 g.setColor(COLORS[3]); 77 g.fillRect(w / 2, h / 2, w / 2, h / 2); 78 } 79 }; 80 81 panel.add(canvas); 82 frame.add(panel); 83 frame.setVisible(true); 84 Robot robot = new Robot(); 85 robot.waitForIdle(); 86 Thread.sleep(200); 87 88 Rectangle rect = canvas.getBounds(); 89 rect.setLocation(canvas.getLocationOnScreen()); 90 91 BufferedImage image = robot.createScreenCapture(rect); 92 frame.dispose(); 93 94 int w = image.getWidth(); 95 int h = image.getHeight(); 96 97 if (w != frame.getWidth() || h != frame.getHeight()) { 98 throw new RuntimeException("Wrong image size!"); 99 } 100 101 if (image.getRGB(w / 4, h / 4) != COLORS[0].getRGB()) { 102 throw new RuntimeException("Wrong image color!"); 103 } 104 105 if (image.getRGB(3 * w / 4, h / 4) != COLORS[1].getRGB()) { 106 throw new RuntimeException("Wrong image color!"); 107 } 108 109 if (image.getRGB(w / 4, 3 * h / 4) != COLORS[2].getRGB()) { 110 throw new RuntimeException("Wrong image color!"); 111 } 112 113 if (image.getRGB(3 * w / 4, 3 * h / 4) != COLORS[3].getRGB()) { 114 throw new RuntimeException("Wrong image color!"); 115 } 116 } 117 118 private static boolean setSupportedLAF() { 119 120 for (String supportedLAF : SUPPORTED_LAFS) { 121 try { 122 UIManager.setLookAndFeel(supportedLAF); 123 return true; 124 } catch (Exception ignored) { 125 } 126 } 127 128 return false; 129 } 130 }