1. /*

  2.  * @(#)GIFImageMetadataFormat.java	1.5 03/01/23

  3.  *

  4.  * Copyright 2003 Sun Microsystems, Inc. All rights reserved.

  5.  * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

  6.  */

  7. 

  8. package com.sun.imageio.plugins.gif;

  9. 

  10. import java.util.Arrays;

  11. import javax.imageio.ImageTypeSpecifier;

  12. import javax.imageio.metadata.IIOMetadataFormat;

  13. import javax.imageio.metadata.IIOMetadataFormatImpl;

  14. 

  15. class GIFImageMetadataFormat extends IIOMetadataFormatImpl {

  16. 

  17.     private static IIOMetadataFormat instance = null;

  18. 

  19.     private GIFImageMetadataFormat() {

  20.         super(GIFImageMetadata.nativeMetadataFormatName,

  21.               CHILD_POLICY_SOME);

  22. 

  23.         // root -> ImageDescriptor

  24.         addElement("ImageDescriptor",

  25.                    GIFImageMetadata.nativeMetadataFormatName,

  26.                    CHILD_POLICY_EMPTY);

  27.         addAttribute("ImageDescriptor", "imageLeftPosition",

  28.                      DATATYPE_INTEGER, true, null,

  29.                      "0", "65535", true, true); 

  30.         addAttribute("ImageDescriptor", "imageTopPosition",

  31.                      DATATYPE_INTEGER, true, null,

  32.                      "0", "65535", true, true); 

  33.         addAttribute("ImageDescriptor", "imageWidth",

  34.                      DATATYPE_INTEGER, true, null,

  35.                      "1", "65535", true, true); 

  36.         addAttribute("ImageDescriptor", "imageHeight",

  37.                      DATATYPE_INTEGER, true, null,

  38.                      "1", "65535", true, true); 

  39.         addBooleanAttribute("ImageDescriptor", "interlaceFlag",

  40.                             false, false);

  41. 

  42.         // root -> LocalColorTable

  43.         addElement("LocalColorTable",

  44.                    GIFImageMetadata.nativeMetadataFormatName,

  45.                    2, 256);

  46.         addAttribute("LocalColorTable", "sizeOfLocalColorTable",

  47.                      DATATYPE_INTEGER, true, null,

  48.                      Arrays.asList(GIFStreamMetadata.colorTableSizes));

  49.         addBooleanAttribute("LocalColorTable", "sortFlag",

  50.                             false, false);

  51. 

  52.         // root -> LocalColorTable -> ColorTableEntry

  53.         addElement("ColorTableEntry", "LocalColorTable",

  54.                    CHILD_POLICY_EMPTY);

  55.         addAttribute("ColorTableEntry", "index",

  56.                      DATATYPE_INTEGER, true, null,

  57.                      "0", "255", true, true);

  58.         addAttribute("ColorTableEntry", "red",

  59.                      DATATYPE_INTEGER, true, null,

  60.                      "0", "255", true, true);

  61.         addAttribute("ColorTableEntry", "green",

  62.                      DATATYPE_INTEGER, true, null,

  63.                      "0", "255", true, true);

  64.         addAttribute("ColorTableEntry", "blue",

  65.                      DATATYPE_INTEGER, true, null,

  66.                      "0", "255", true, true);

  67. 

  68.         // root -> GraphicControlExtension

  69.         addElement("GraphicControlExtension",

  70.                    GIFImageMetadata.nativeMetadataFormatName,

  71.                    CHILD_POLICY_EMPTY);

  72.         addAttribute("GraphicControlExtension", "disposalMethod",

  73.                      DATATYPE_STRING, true, null,

  74.                      Arrays.asList(GIFImageMetadata.disposalMethodNames));

  75.         addBooleanAttribute("GraphicControlExtension", "userInputFlag",

  76.                             false, false);

  77.         addBooleanAttribute("GraphicControlExtension", "transparentColorFlag",

  78.                             false, false);

  79.         addAttribute("GraphicControlExtension", "delayTime",

  80.                      DATATYPE_INTEGER, true, null,

  81.                      "0", "65535", true, true);

  82.         addAttribute("GraphicControlExtension", "transparentColorIndex",

  83.                      DATATYPE_INTEGER, true, null,

  84.                      "0", "255", true, true);

  85. 

  86.         // root -> PlainTextExtension

  87.         addElement("PlainTextExtension",

  88.                    GIFImageMetadata.nativeMetadataFormatName,

  89.                    CHILD_POLICY_EMPTY);

  90.         addAttribute("PlainTextExtension", "textGridLeft",

  91.                      DATATYPE_INTEGER, true, null,

  92.                      "0", "65535", true, true);

  93.         addAttribute("PlainTextExtension", "textGridTop",

  94.                      DATATYPE_INTEGER, true, null,

  95.                      "0", "65535", true, true);

  96.         addAttribute("PlainTextExtension", "textGridWidth",

  97.                      DATATYPE_INTEGER, true, null,

  98.                      "1", "65535", true, true);

  99.         addAttribute("PlainTextExtension", "textGridHeight",

  100.                      DATATYPE_INTEGER, true, null,

  101.                      "1", "65535", true, true);

  102.         addAttribute("PlainTextExtension", "characterCellWidth",

  103.                      DATATYPE_INTEGER, true, null,

  104.                      "1", "65535", true, true);

  105.         addAttribute("PlainTextExtension", "characterCellHeight",

  106.                      DATATYPE_INTEGER, true, null,

  107.                      "1", "65535", true, true);

  108.         addAttribute("PlainTextExtension", "textForegroundColor",

  109.                      DATATYPE_INTEGER, true, null,

  110.                      "0", "255", true, true);

  111.         addAttribute("PlainTextExtension", "textBackgroundColor",

  112.                      DATATYPE_INTEGER, true, null,

  113.                      "0", "255", true, true);

  114.         

  115.         // root -> ApplicationExtensions

  116.         addElement("ApplicationExtensions",

  117.                    GIFImageMetadata.nativeMetadataFormatName,

  118.                    1, Integer.MAX_VALUE);

  119. 

  120.         // root -> ApplicationExtensions -> ApplicationExtension

  121.         addElement("ApplicationExtension", "ApplicationExtensions",

  122.                    CHILD_POLICY_EMPTY);

  123.         addAttribute("ApplicationExtension", "applicationID",

  124.                      DATATYPE_STRING, true, null);

  125.         addAttribute("ApplicationExtension", "authenticationCode",

  126.                      DATATYPE_STRING, true, null);

  127.         addObjectValue("ApplicationExtension", byte.class,

  128.                        0, Integer.MAX_VALUE);

  129. 

  130.         // root -> CommentExtensions

  131.         addElement("CommentExtensions",

  132.                    GIFImageMetadata.nativeMetadataFormatName,

  133.                    1, Integer.MAX_VALUE);

  134. 

  135.         // root -> CommentExtensions -> CommentExtension

  136.         addElement("CommentExtension", "CommentExtensions",

  137.                    CHILD_POLICY_EMPTY);

  138.         addAttribute("CommentExtension", "value",

  139.                      DATATYPE_STRING, true, null);

  140.     }

  141. 

  142.     public boolean canNodeAppear(String elementName,

  143.                                  ImageTypeSpecifier imageType) {

  144.         return true;

  145.     }

  146. 

  147.     public static synchronized IIOMetadataFormat getInstance() {

  148.         if (instance == null) {

  149.             instance = new GIFImageMetadataFormat();

  150.         }

  151.         return instance;

  152.     }

  153. }