1/*
2 * Copyright (c) 2014, 2017, 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.*;
25import java.awt.image.*;
26import javax.swing.*;
27
28/**
29 * @test
30 * @key headful
31 * @bug 8162591
32 * @summary tests gradients with start/endpoints exceeding Short.MAX coordinates
33 * @author ceisserer
34 */
35
36public class HugeGradientTest extends Frame {
37        public static volatile boolean success = false;
38
39        public HugeGradientTest() {
40                Image dstImg = getGraphicsConfiguration()
41                        .createCompatibleVolatileImage(30, 30);
42                Graphics2D g = (Graphics2D) dstImg.getGraphics();
43
44                g.setPaint(new LinearGradientPaint(0f, Short.MAX_VALUE, 0f, Short.MAX_VALUE +31,
45                        new float[]{0f, 1f}, new Color[]{Color.BLACK, Color.RED}));
46                g.translate(0, -Short.MAX_VALUE);
47                g.fillRect (0, 0, Short.MAX_VALUE*2 , Short.MAX_VALUE*2);
48
49                BufferedImage readBackImg = new BufferedImage(dstImg.getWidth(null),
50                dstImg.getHeight(null), BufferedImage.TYPE_INT_RGB);
51                readBackImg.getGraphics().drawImage(dstImg, 0, 0, null);
52
53                for (int x = 0; x < readBackImg.getWidth(); x++) {
54                        for (int y = 0; y < readBackImg.getHeight(); y++) {
55                                int redVal = (readBackImg.getRGB(x, y) & 0x00FF0000) >> 16;
56
57                                if (redVal > 127) {
58                                        return;
59                                }
60                        }
61                }
62
63                throw new RuntimeException("Test Failed");
64        }
65
66        public static void main(String[] args) throws Exception {
67                SwingUtilities.invokeLater(new Runnable() {
68                        public void run() {
69                                new HugeGradientTest();
70                        }
71                });
72        }
73}
74