1 /*
   2  * Copyright (c) 2014, 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.*;
  25 import java.awt.image.*;
  26 import javax.swing.*;
  27 
  28 /**
  29  * @test
  30  * @bug 8056009
  31  * @summary tests whether Graphics.setColor-calls with Color.white are ignored directly
  32  *          after pipeline initialization for a certain set of operations.
  33  * @author ceisserer
  34  */
  35 public class WhiteTextColorTest extends Frame {
  36     public static volatile boolean success = false;
  37 
  38     public WhiteTextColorTest() {
  39         Image dstImg = getGraphicsConfiguration()
  40                 .createCompatibleVolatileImage(30, 20);
  41         Graphics g = dstImg.getGraphics();
  42 
  43         g.setColor(Color.BLACK);
  44         g.fillRect(0, 0, dstImg.getWidth(null), dstImg.getHeight(null));
  45         g.setColor(Color.WHITE);
  46         g.drawString("Test", 0, 15);
  47 
  48         BufferedImage readBackImg = new BufferedImage(dstImg.getWidth(null),
  49                 dstImg.getHeight(null), BufferedImage.TYPE_INT_RGB);
  50         readBackImg.getGraphics().drawImage(dstImg, 0, 0, null);
  51 
  52         for (int x = 0; x < readBackImg.getWidth(); x++) {
  53             for (int y = 0; y < readBackImg.getHeight(); y++) {
  54                 int pixel = readBackImg.getRGB(x, y);
  55 
  56                 // In case a single white pixel is found, the
  57                 // setColor(Color.WHITE)
  58                 // call before was not ignored and the bug is not present
  59                 if (pixel == 0xFFFFFFFF) {
  60                     return;
  61                 }
  62             }
  63         }
  64 
  65         throw new RuntimeException("Test Failed");
  66     }
  67 
  68     public static void main(String[] args) throws Exception {
  69         SwingUtilities.invokeLater(new Runnable() {
  70             public void run() {
  71                 new WhiteTextColorTest();
  72             }
  73         });
  74     }
  75 }
  76