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
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7  * published by the Free Software Foundation.
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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
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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22  */
23 
24 import java.awt.*;
25 import java.awt.image.*;
26 import javax.swing.*;
27 
28 /**
29  * @test
30  * @key headful
31  * @bug 8056009
32  * @summary tests whether Graphics.setColor-calls with Color.white are ignored directly
33  *          after pipeline initialization for a certain set of operations.
34  * @author ceisserer
35  */
36 
37 public class WhiteTextColorTest extends Frame {
38     public static volatile boolean success = false;
39 
WhiteTextColorTest()40     public WhiteTextColorTest() {
41         Image dstImg = getGraphicsConfiguration()
42                 .createCompatibleVolatileImage(30, 20);
43         Graphics g = dstImg.getGraphics();
44 
45         g.setColor(Color.BLACK);
46         g.fillRect(0, 0, dstImg.getWidth(null), dstImg.getHeight(null));
47         g.setColor(Color.WHITE);
48         g.drawString("Test", 0, 15);
49 
50         BufferedImage readBackImg = new BufferedImage(dstImg.getWidth(null),
51                 dstImg.getHeight(null), BufferedImage.TYPE_INT_RGB);
52         readBackImg.getGraphics().drawImage(dstImg, 0, 0, null);
53 
54         for (int x = 0; x < readBackImg.getWidth(); x++) {
55             for (int y = 0; y < readBackImg.getHeight(); y++) {
56                 int pixel = readBackImg.getRGB(x, y);
57 
58                 // In case a single white pixel is found, the
59                 // setColor(Color.WHITE)
60                 // call before was not ignored and the bug is not present
61                 if (pixel == 0xFFFFFFFF) {
62                     return;
63                 }
64             }
65         }
66 
67         throw new RuntimeException("Test Failed");
68     }
69 
main(String[] args)70     public static void main(String[] args) throws Exception {
71         SwingUtilities.invokeLater(new Runnable() {
72             public void run() {
73                 new WhiteTextColorTest();
74             }
75         });
76     }
77 }
78 
79