1 /* 2 * Copyright (c) 2018, 2019, 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 /** 25 * @test 26 * @key headful 27 * @bug 8204931 8227392 8224825 28 * @summary test alpha colors are blended with background. 29 */ 30 31 import java.awt.Color; 32 import java.awt.Component; 33 import java.awt.Dimension; 34 import java.awt.Frame; 35 import java.awt.Graphics; 36 import java.awt.Robot; 37 import javax.swing.SwingUtilities; 38 39 public class AlphaColorTest extends Component { 40 41 private Color color; 42 43 public AlphaColorTest(Color c) { 44 this.color = c; 45 } 46 47 public void paint(Graphics g) { 48 g.setColor(color); 49 g.fillRect(0, 0, getSize().width, getSize().height); 50 } 51 52 public Dimension getPreferredSize() { 53 return getSize(); 54 } 55 56 public Dimension getSize() { 57 return new Dimension(200, 200); 58 } 59 60 public static void main(String args[]) throws Exception { 61 SwingUtilities.invokeAndWait(() -> createAndShowGUI()); 62 Robot robot = new Robot(); 63 robot.delay(5000); 64 robot.waitForIdle(); 65 Color c = robot.getPixelColor(frame.getX() + 100, frame.getY() + 100); 66 int red = c.getRed(); 67 frame.dispose(); 68 // Should be 126-128, but be tolerant of gamma correction. 69 if (red < 122 || red > 132) { 70 throw new RuntimeException("Color is not as expected. Got " + c); 71 } 72 } 73 74 static Frame frame; 75 private static void createAndShowGUI() { 76 frame = new Frame("Alpha Color Test") { 77 @Override 78 public void paint(Graphics g) { 79 g.setColor(Color.black); 80 g.fillRect(0, 0, getWidth(), getHeight()); 81 super.paint(g); 82 } 83 }; 84 Color color = new Color(255, 255, 255, 127); 85 frame.add("Center", new AlphaColorTest(color)); 86 frame.pack(); 87 frame.setVisible(true); 88 } 89 }