wbmpmetadataformat.java

java1.6众多例子参考

/*
 * @(#)WBMPMetadataFormat.java	1.4 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package com.sun.imageio.plugins.wbmp;

import java.util.Arrays;
import javax.imageio.ImageTypeSpecifier;
import javax.imageio.metadata.IIOMetadataFormat;
import javax.imageio.metadata.IIOMetadataFormatImpl;

public class WBMPMetadataFormat extends IIOMetadataFormatImpl {

    private static IIOMetadataFormat instance = null;

    private WBMPMetadataFormat() {
        super(WBMPMetadata.nativeMetadataFormatName,
              CHILD_POLICY_SOME);

        // root -> ImageDescriptor
        addElement("ImageDescriptor",
                   WBMPMetadata.nativeMetadataFormatName,
                   CHILD_POLICY_EMPTY);

        addAttribute("ImageDescriptor", "WBMPType",
                     DATATYPE_INTEGER, true, "0");

        addAttribute("ImageDescriptor", "Width",
                     DATATYPE_INTEGER, true, null,
                     "0", "65535", true, true);
        addAttribute("ImageDescriptor", "Height",
                     DATATYPE_INTEGER, true, null,
                     "1", "65535", true, true);
    }
        
    

    public boolean canNodeAppear(String elementName,
                                 ImageTypeSpecifier imageType) {
        return true;
    }

    public static synchronized IIOMetadataFormat getInstance() {
        if (instance == null) {
            instance = new WBMPMetadataFormat();
        }
        return instance;
    }
}