bug6683775.java revision 8729:0242fce0f717 
1/*
2 * Copyright (c) 2009, 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
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/* @test
25   @bug 6683775 6794764
26   @summary Painting artifacts is seen when panel is made setOpaque(false) for a translucent window
27   @author Alexander Potochkin
28   @run main bug6683775
29*/
30
31import com.sun.awt.AWTUtilities;
32import sun.awt.SunToolkit;
33
34import javax.swing.*;
35import java.awt.*;
36import java.awt.image.BufferedImage;
37
38public class bug6683775 {
39    public static void main(String[] args) throws Exception {
40        GraphicsConfiguration gc = getGC();
41        if (!AWTUtilities.isTranslucencySupported(
42                AWTUtilities.Translucency.PERPIXEL_TRANSLUCENT)
43                || gc == null) {
44            return;
45        }
46        SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
47        Robot robot = new Robot();
48        final JFrame testFrame = new JFrame(gc);
49
50        SwingUtilities.invokeLater(new Runnable() {
51            public void run() {
52                JFrame backgroundFrame = new JFrame("Background frame");
53                backgroundFrame.setUndecorated(true);
54                JPanel panel = new JPanel();
55                panel.setBackground(Color.RED);
56                backgroundFrame.add(panel);
57                backgroundFrame.setSize(200, 200);
58                backgroundFrame.setVisible(true);
59
60                testFrame.setUndecorated(true);
61                JPanel p = new JPanel();
62                p.setOpaque(false);
63                testFrame.add(p);
64                AWTUtilities.setWindowOpaque(testFrame, false);
65                testFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
66                testFrame.setSize(400, 400);
67                testFrame.setLocation(0, 0);
68                testFrame.setVisible(true);
69            }
70        });
71
72        toolkit.realSync();
73
74        //robot.getPixelColor() didn't work right for some reason
75        BufferedImage capture = robot.createScreenCapture(new Rectangle(100, 100));
76
77        int redRGB = Color.RED.getRGB();
78        if (redRGB != capture.getRGB(10, 10)) {
79            throw new RuntimeException("Transparent frame is not transparent!");
80        }
81    }
82
83    private static GraphicsConfiguration getGC() {
84        GraphicsConfiguration transparencyCapableGC =
85                GraphicsEnvironment.getLocalGraphicsEnvironment()
86                        .getDefaultScreenDevice().getDefaultConfiguration();
87        if (!AWTUtilities.isTranslucencyCapable(transparencyCapableGC)) {
88            transparencyCapableGC = null;
89
90            GraphicsEnvironment env =
91                    GraphicsEnvironment.getLocalGraphicsEnvironment();
92            GraphicsDevice[] devices = env.getScreenDevices();
93
94            for (int i = 0; i < devices.length && transparencyCapableGC == null; i++) {
95                GraphicsConfiguration[] configs = devices[i].getConfigurations();
96                for (int j = 0; j < configs.length && transparencyCapableGC == null; j++) {
97                    if (AWTUtilities.isTranslucencyCapable(configs[j])) {
98                        transparencyCapableGC = configs[j];
99                    }
100                }
101            }
102        }
103        return transparencyCapableGC;
104    }
105}
106