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 
  32 import java.awt.Color;
  33 import java.awt.Graphics2D;
  34 import java.awt.image.BufferedImage;
  35 import java.io.ByteArrayInputStream;
  36 import java.io.ByteArrayOutputStream;
  37 import java.io.IOException;
  38 
  39 import javax.imageio.IIOImage;
  40 import javax.imageio.ImageIO;
  41 import javax.imageio.ImageReader;
  42 import javax.imageio.ImageTypeSpecifier;
  43 import javax.imageio.ImageWriteParam;
  44 import javax.imageio.ImageWriter;
  45 import javax.imageio.metadata.IIOMetadata;
  46 import javax.imageio.stream.ImageInputStream;
  47 import javax.imageio.stream.ImageOutputStream;
  48 
  49 import com.sun.imageio.plugins.gif.GIFStreamMetadata;
  50 
  51 public 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 }