1/*
2 * Copyright (c) 2005, 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
24/*
25 * @test
26 * @bug 6307618
27 * @summary Test verifies that GIF image writer updates the dimension of the
28 *          logical screen according to image dimension
29 * @modules java.desktop/com.sun.imageio.plugins.gif
30 */
31
32import java.awt.Color;
33import java.awt.Graphics2D;
34import java.awt.image.BufferedImage;
35import java.io.ByteArrayInputStream;
36import java.io.ByteArrayOutputStream;
37import java.io.IOException;
38
39import javax.imageio.IIOImage;
40import javax.imageio.ImageIO;
41import javax.imageio.ImageReader;
42import javax.imageio.ImageTypeSpecifier;
43import javax.imageio.ImageWriteParam;
44import javax.imageio.ImageWriter;
45import javax.imageio.metadata.IIOMetadata;
46import javax.imageio.stream.ImageInputStream;
47import javax.imageio.stream.ImageOutputStream;
48
49import com.sun.imageio.plugins.gif.GIFStreamMetadata;
50
51public class LogicalScreenDimensionTest {
52    public static void main(String[] args) throws IOException {
53        String format = "GIF";
54        ImageWriter writer =
55                ImageIO.getImageWritersByFormatName(format).next();
56        if (writer == null) {
57            throw new RuntimeException("No available writers for " + format);
58        }
59
60        BufferedImage img = createTestImage(100, 100, BufferedImage.TYPE_BYTE_GRAY);
61
62        ImageWriteParam p = writer.getDefaultWriteParam();
63        ImageTypeSpecifier type =
64            ImageTypeSpecifier.createFromRenderedImage(img);
65        IIOMetadata inImageMetadata =
66            writer.getDefaultImageMetadata(type, p);
67
68        IIOMetadata inStreamMetadata = writer.getDefaultStreamMetadata(p);
69
70        // write and read image
71        ByteArrayOutputStream baos = new ByteArrayOutputStream();
72
73        ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
74        writer.setOutput(ios);
75
76        writer.write(inStreamMetadata, new IIOImage(img, null, inImageMetadata), p);
77
78        ios.flush();
79        ios.close();
80
81        // read result
82        ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
83        ImageInputStream iis = ImageIO.createImageInputStream(bais);
84        ImageReader reader = ImageIO.getImageReader(writer);
85        reader.setInput(iis);
86
87        IIOMetadata outStreamMetadata = reader.getStreamMetadata();
88
89        GIFStreamMetadata gifStreamMetadata = (GIFStreamMetadata)outStreamMetadata;
90
91        if (gifStreamMetadata.logicalScreenWidth != img.getWidth() ||
92                gifStreamMetadata.logicalScreenHeight != img.getHeight()) {
93            throw new RuntimeException("Test failed due to wrong logical screen dimension.");
94        }
95    }
96
97    private static BufferedImage createTestImage(int w, int h, int type) {
98        BufferedImage res = new BufferedImage(w, h, type);
99        Graphics2D g = res.createGraphics();
100        g.setColor(Color.white);
101        g.fillRect(0, 0, w, h);
102        g.setColor(Color.black);
103        g.fillRect(w/4, h/4, w/2, h/2);
104
105
106        return res;
107    }
108}
109