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 /* 25 * @test 26 * @bug 8176795 27 * @summary Test verifies that we get proper color when we draw translucent 28 * color over an opaque color using X Render extension in Linux. 29 * @requires (os.family == "linux") 30 * @run main XRenderTranslucentColorDrawTest -Dsun.java2d.xrender=true 31 */ 32 33 import java.awt.Color; 34 import java.awt.Graphics2D; 35 import java.awt.GraphicsConfiguration; 36 import java.awt.GraphicsDevice; 37 import java.awt.GraphicsEnvironment; 38 import java.awt.image.BufferedImage; 39 import java.awt.image.VolatileImage; 40 41 public class XRenderTranslucentColorDrawTest { 42 43 public static void main(String[] args) throws Exception { 44 GraphicsEnvironment env = GraphicsEnvironment. 45 getLocalGraphicsEnvironment(); 46 GraphicsConfiguration translucentGC = null; 47 SCREENS: for (GraphicsDevice screen : env.getScreenDevices()) { 48 for (GraphicsConfiguration gc : screen.getConfigurations()) { 49 if (gc.isTranslucencyCapable()) { 50 translucentGC = gc; 51 break SCREENS; 52 } 53 } 54 } 55 if (translucentGC == null) { 56 throw new RuntimeException("No suitable gc found."); 57 } 58 int width = 10; 59 int height = 10; 60 VolatileImage image = translucentGC. 61 createCompatibleVolatileImage(width, height); 62 Graphics2D g = image.createGraphics(); 63 // draw opaque black color 64 g.setColor(new Color(0xff000000, true)); 65 g.fillRect(0, 0, width, height); 66 // draw translucent white color over opaque black color 67 g.setColor(new Color(0x80ffffff, true)); 68 g.fillRect(0, 0, width, height); 69 g.dispose(); 70 // Get snapshot of VolatileImage to pick color and verify the same 71 BufferedImage snapshot = image.getSnapshot(); 72 int argb = snapshot.getRGB(width / 2, height / 2); 73 // we expect the resultant rgb hex value to be ff808080 74 if (!(Integer.toHexString(argb).equals("ff808080"))) { 75 throw new RuntimeException("Using X Render extension for drawing" 76 + " translucent color is not giving expected results."); 77 } 78 } 79 } 80