bug6683775.java revision 14851:980da45565c8 
1/*
2 * Copyright (c) 2009, 2016, 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 6683775 6794764
28 * @summary Painting artifacts is seen when panel is made setOpaque(false) for a translucent window
29 * @author Alexander Potochkin
30 * @modules java.desktop/com.sun.awt
31 *          java.desktop/sun.awt
32 * @run main bug6683775
33 */
34
35import com.sun.awt.AWTUtilities;
36
37import javax.swing.*;
38import java.awt.*;
39import java.awt.image.BufferedImage;
40
41public class bug6683775 {
42    static final int LOC = 100,
43            SIZE = 200;
44
45    public static void main(String[] args) throws Exception {
46        GraphicsConfiguration gc = getGC();
47       if (!AWTUtilities.isTranslucencySupported(
48               AWTUtilities.Translucency.PERPIXEL_TRANSLUCENT)
49                || gc == null) {
50            return;
51        }
52        Robot robot = new Robot();
53        final JFrame testFrame = new JFrame(gc);
54
55        SwingUtilities.invokeAndWait(() -> {
56            JFrame backgroundFrame = new JFrame("Background frame");
57            backgroundFrame.setUndecorated(true);
58            JPanel panel = new JPanel();
59            panel.setBackground(Color.RED);
60            backgroundFrame.add(panel);
61            backgroundFrame.setBounds(LOC, LOC, SIZE, SIZE);
62            backgroundFrame.setVisible(true);
63
64            testFrame.setUndecorated(true);
65            JPanel p = new JPanel();
66            p.setOpaque(false);
67            testFrame.add(p);
68            AWTUtilities.setWindowOpaque(testFrame, false);
69            testFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
70            testFrame.setBounds(LOC, LOC, SIZE, SIZE);
71            testFrame.setVisible(true);
72        });
73
74        robot.waitForIdle();
75        Thread.sleep(1500);
76
77        //robot.getPixelColor() didn't work right for some reason
78        BufferedImage capture =
79                robot.createScreenCapture(new Rectangle(LOC, LOC, SIZE, SIZE));
80
81        int redRGB = Color.RED.getRGB();
82        if (redRGB != capture.getRGB(SIZE/2, SIZE/2)) {
83            throw new RuntimeException("Transparent frame is not transparent!");
84        }
85    }
86
87    private static GraphicsConfiguration getGC() {
88        GraphicsConfiguration transparencyCapableGC =
89                GraphicsEnvironment.getLocalGraphicsEnvironment()
90                        .getDefaultScreenDevice().getDefaultConfiguration();
91        if (!AWTUtilities.isTranslucencyCapable(transparencyCapableGC)) {
92            transparencyCapableGC = null;
93
94            GraphicsEnvironment env =
95                    GraphicsEnvironment.getLocalGraphicsEnvironment();
96            GraphicsDevice[] devices = env.getScreenDevices();
97
98            for (int i = 0; i < devices.length && transparencyCapableGC == null; i++) {
99                GraphicsConfiguration[] configs = devices[i].getConfigurations();
100                for (int j = 0; j < configs.length && transparencyCapableGC == null; j++) {
101                    if (AWTUtilities.isTranslucencyCapable(configs[j])) {
102                        transparencyCapableGC = configs[j];
103                    }
104                }
105            }
106        }
107        return transparencyCapableGC;
108    }
109}
110