test/javax/imageio/plugins/png/MergeStdCommentTest.java

/*
 * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * questions.
 */

/**
 * @test
 * @bug 5106550
 * @summary Merge a comment using the standard metdata format
 *          and only a minimal set of attributes
 */

import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageTypeSpecifier;
import javax.imageio.ImageWriter;
import javax.imageio.metadata.IIOMetadata;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.bootstrap.DOMImplementationRegistry;

public class MergeStdCommentTest {

    public static void main(String[] args) throws Exception {
        String format = "javax_imageio_1.0";
        BufferedImage img =
            new BufferedImage(16, 16, BufferedImage.TYPE_INT_RGB);
        ImageWriter iw = ImageIO.getImageWritersByMIMEType("image/png").next();
        IIOMetadata meta =
            iw.getDefaultImageMetadata(new ImageTypeSpecifier(img), null);
        DOMImplementationRegistry registry;
        registry = DOMImplementationRegistry.newInstance();
        DOMImplementation impl = registry.getDOMImplementation("XML 3.0");
        Document doc = impl.createDocument(null, format, null);
        Element root, text, entry;
        root = doc.getDocumentElement();
        root.appendChild(text = doc.createElement("Text"));
        text.appendChild(entry = doc.createElement("TextEntry"));
        // keyword isn't #REQUIRED by the standard metadata format.
        // However, it is required by the PNG format, so we include it here.
        entry.setAttribute("keyword", "Comment");
        entry.setAttribute("value", "Some demo comment");
        meta.mergeTree(format, root);
    }
}