BackgroundIsNotUpdated.java revision 14851:980da45565c8 
1/*
2 * Copyright (c) 2013, 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
24import java.awt.AWTException;
25import java.awt.Color;
26import java.awt.Frame;
27import java.awt.Graphics;
28import java.awt.Point;
29import java.awt.Robot;
30import java.awt.Window;
31
32/**
33 * @test
34 * @key headful
35 * @bug 8001472
36 * @summary Background of the window should not depend from the paint()/update()
37 * @author Sergey Bylokhov
38 * @library ../../../../lib/testlibrary
39 * @build ExtendedRobot
40 * @run main BackgroundIsNotUpdated
41 */
42public final class BackgroundIsNotUpdated extends Window {
43
44    public BackgroundIsNotUpdated(final Frame owner) {
45        super(owner);
46    }
47
48    @Override
49    public void paint(final Graphics ignored) {
50        // Intentionally left blank
51    }
52
53    @Override
54    public void update(final Graphics ignored) {
55        // Intentionally left blank
56    }
57
58    public static void main(final String[] args) throws AWTException {
59        final Window window = new BackgroundIsNotUpdated(null);
60        window.setSize(300, 300);
61        window.setLocationRelativeTo(null);
62        window.setVisible(true);
63        window.requestFocus();
64        final ExtendedRobot robot = new ExtendedRobot();
65        robot.setAutoDelay(200);
66        robot.waitForIdle(1000);
67        window.setBackground(Color.GREEN);
68        robot.waitForIdle(1000);
69        Point point = window.getLocationOnScreen();
70        Color color = robot.getPixelColor(point.x + window.getWidth() / 2,
71                                          point.y + window.getHeight() / 2);
72        window.dispose();
73        if (!color.equals(Color.GREEN)) {
74            throw new RuntimeException(
75                    "Expected: " + Color.GREEN + " , Actual: " + color);
76        }
77    }
78}
79