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 6287880
  27  * @summary Test verifies that default metadata for stream and image returned by
  28  *          GIFImageWriter can be modified by the tree representation
  29  */
  30 
  31 import java.awt.image.BufferedImage;
  32 
  33 import javax.imageio.ImageIO;
  34 import javax.imageio.ImageTypeSpecifier;
  35 import javax.imageio.ImageWriteParam;
  36 import javax.imageio.ImageWriter;
  37 import javax.imageio.metadata.IIOInvalidTreeException;
  38 import javax.imageio.metadata.IIOMetadata;
  39 import javax.imageio.metadata.IIOMetadataNode;
  40 
  41 public class WriteMetadataTest {
  42     private static String format = "GIF";
  43 
  44     public static void main(String[] args) {
  45         ImageWriter w = ImageIO.getImageWritersByFormatName(format).next();
  46         if (w == null) {
  47             throw new RuntimeException("No available writers for format " + format);
  48         }
  49         ImageWriteParam p = w.getDefaultWriteParam();
  50 
  51         ImageTypeSpecifier t =
  52                 ImageTypeSpecifier.createFromBufferedImageType(BufferedImage.TYPE_INT_RGB);
  53 
  54         IIOMetadata m = w.getDefaultImageMetadata(t, p);
  55         System.out.println("Default image metadata is " + m);
  56         testWritableMetadata(m);
  57 
  58         IIOMetadata sm = w.getDefaultStreamMetadata(p);
  59         System.out.println("Default stream metadata is " + sm);
  60         testWritableMetadata(sm);
  61     }
  62 
  63     public static void testWritableMetadata(IIOMetadata m) {
  64         String nativeFormatName =
  65                 m.getNativeMetadataFormatName();
  66         System.out.println("Format: " + nativeFormatName);
  67         IIOMetadataNode root = (IIOMetadataNode)m.getAsTree(nativeFormatName);
  68         if (m.isReadOnly()) {
  69             throw new RuntimeException("Metadata is read only!");
  70         }
  71         try {
  72             m.setFromTree(nativeFormatName, root);
  73         } catch (IIOInvalidTreeException e) {
  74             e.printStackTrace();
  75             throw new RuntimeException("Test failed!", e);
  76         } catch (IllegalStateException e) {
  77             throw new RuntimeException("Test failed!", e);
  78         }
  79         System.out.println("Test passed.\n\n");
  80     }
  81 }