IncorrectBounds.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
24
25import java.awt.AlphaComposite;
26import java.awt.Color;
27import java.awt.Graphics2D;
28import java.awt.GraphicsConfiguration;
29import java.awt.GraphicsEnvironment;
30import java.awt.image.BufferedImage;
31import java.awt.image.VolatileImage;
32
33/**
34 * @test
35 * @key headful
36 * @bug 8000629
37 * @summary Temporary backbuffer in the DrawImage should not fill background
38 * outside of source image bounds.
39 * @author Sergey Bylokhov
40 */
41public final class IncorrectBounds {
42
43    private static final int width = 400;
44    private static final int height = 400;
45
46    public static void main(final String[] args) {
47        GraphicsEnvironment ge =
48                GraphicsEnvironment.getLocalGraphicsEnvironment();
49        GraphicsConfiguration gc =
50                ge.getDefaultScreenDevice().getDefaultConfiguration();
51        VolatileImage vi = gc.createCompatibleVolatileImage(width / 4,
52                                                            height / 4);
53        final BufferedImage bi = new BufferedImage(width, height,
54                                                   BufferedImage.TYPE_INT_ARGB);
55        while (true) {
56            vi.validate(gc);
57            Graphics2D g2d = vi.createGraphics();
58            g2d.setColor(Color.green);
59            g2d.fillRect(0, 0, width / 4, height / 4);
60            g2d.dispose();
61
62            if (vi.validate(gc) != VolatileImage.IMAGE_OK) {
63                try {
64                    Thread.sleep(100);
65                } catch (InterruptedException ignored) {
66                }
67                continue;
68            }
69
70            Graphics2D g = bi.createGraphics();
71            g.setComposite(AlphaComposite.Src);
72            g.setColor(Color.red);
73            g.fillRect(0, 0, width, height);
74            // Use sx and sy outside of VI bounds.
75            g.drawImage(vi, 0, 0, width / 2, height / 2, 0, 0, width * 2,
76                        height * 2, null);
77            g.dispose();
78
79            if (vi.contentsLost()) {
80                try {
81                    Thread.sleep(100);
82                } catch (InterruptedException ignored) {
83                }
84                continue;
85            }
86
87            for (int x = 0; x < width; ++x) {
88                for (int y = 0; y < height; ++y) {
89                    if (x < width / 16 && y < height / 16) {
90                        if (bi.getRGB(x, y) != Color.green.getRGB()) {
91                            throw new RuntimeException("Test failed.");
92                        }
93                    } else {
94                        if (bi.getRGB(x, y) != Color.red.getRGB()) {
95                            throw new RuntimeException("Test failed.");
96                        }
97                    }
98                }
99            }
100            break;
101        }
102    }
103}
104