LinearColorSpaceGradientTest.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.*;
25import java.awt.MultipleGradientPaint.*;
26import java.awt.geom.*;
27import java.awt.image.*;
28
29/**
30 * @test
31 * @key headful
32 * @bug 8023483
33 * @summary tests wether the colorspace-parameter is applied correctly when
34 *          creating a gradient.
35 * @author ceisserer
36 */
37public class LinearColorSpaceGradientTest extends Frame {
38    BufferedImage srcImg;
39    Image dstImg;
40
41    public LinearColorSpaceGradientTest() {
42        srcImg = createSrcImage();
43        dstImg = getGraphicsConfiguration().createCompatibleVolatileImage(20,
44                20);
45    }
46
47    protected void renderToVI(BufferedImage src, Image dst) {
48        Graphics2D g = (Graphics2D) dst.getGraphics();
49
50        g.setColor(Color.WHITE);
51        g.fillRect(0, 0, dst.getWidth(null), dst.getHeight(null));
52
53        AffineTransform at = new AffineTransform();
54        g.setPaint(new LinearGradientPaint(new Point2D.Float(0, 0),
55                new Point2D.Float(20, 0), new float[] { 0.0f, 1.0f },
56                new Color[] { Color.green, Color.blue }, CycleMethod.NO_CYCLE,
57                ColorSpaceType.LINEAR_RGB, at));
58
59        g.fillRect(-10, -10, 30, 30);
60    }
61
62    public void paint(Graphics g1) {
63        Graphics2D g = (Graphics2D) g1;
64        renderToVI(createSrcImage(), dstImg);
65        g.drawImage(dstImg, 20, 20, null);
66    }
67
68    public void showFrame() {
69        setSize(500, 500);
70        setVisible(true);
71    }
72
73    public void test() {
74        renderToVI(createSrcImage(), dstImg);
75
76        BufferedImage validationImg = new BufferedImage(20, 20,
77                BufferedImage.TYPE_INT_RGB);
78        Graphics2D valG = (Graphics2D) validationImg.getGraphics();
79        valG.drawImage(dstImg, 0, 0, null);
80
81        int b = validationImg.getRGB(10, 10) & 0x000000FF;
82
83        if (b > 150) {
84            System.out.println("Passed!");
85        } else {
86            throw new RuntimeException("Test FAILED!");
87        }
88    }
89
90    protected BufferedImage createSrcImage() {
91        BufferedImage bi = new BufferedImage(10, 10, BufferedImage.TYPE_INT_RGB);
92        Graphics2D g = (Graphics2D) bi.getGraphics();
93        g.setColor(Color.YELLOW);
94        g.fillRect(0, 0, 10, 10);
95        g.setColor(Color.black);
96        g.drawLine(0, 0, 10, 10);
97        return bi;
98    }
99
100    public static void main(String[] args) throws Exception {
101        boolean show = (args.length > 0 && "-show".equals(args[0]));
102
103        final LinearColorSpaceGradientTest t = new LinearColorSpaceGradientTest();
104        if (show) {
105            EventQueue.invokeAndWait(new Runnable() {
106                public void run() {
107                    t.showFrame();
108                }
109            });
110        } else {
111            t.test();
112        }
113    }
114}
115