SvgTranscoder.java

/*
 * Copyright (c) 2005-2016 Flamingo Kirill Grouchnikov. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o Redistributions in binary form must reproduce the above copyright notice, 
 *    this list of conditions and the following disclaimer in the documentation 
 *    and/or other materials provided with the distribution. 
 *     
 *  o Neither the name of Flamingo Kirill Grouchnikov nor the names of 
 *    its contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission. 
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */
package org.pushingpixels.flamingo.api.svg;

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.apache.batik.bridge.BridgeContext;
import org.apache.batik.bridge.DocumentLoader;
import org.apache.batik.bridge.GVTBuilder;
import org.apache.batik.bridge.UserAgentAdapter;
import org.apache.batik.gvt.GraphicsNode;
import org.w3c.dom.Document;

/**
 * SVG to Java2D transcoder.
 * 
 * @author Kirill Grouchnikov.
 */
public class SvgTranscoder extends SvgBaseTranscoder {
	/**
	 * URI of the SVG image.
	 */
	protected String uri;

	/**
	 * Batik bridge context.
	 */
	private BridgeContext batikBridgeContext;

	/**
	 * Creates a new transcoder.
	 * 
	 * @param uri
	 *            URI of the SVG image.
	 * @param javaClassname
	 *            Classname for the generated Java2D code.
	 */
	public SvgTranscoder(String uri, String javaClassname) {
		super(javaClassname);
		this.uri = uri;
	}

	/**
	 * Transcodes the SVG image into Java2D code. Does nothing if the
	 * {@link #listener} is <code>null</code>.
	 */
	public void transcode() {
		if (this.listener == null)
			return;

		UserAgentAdapter ua = new UserAgentAdapter();
		DocumentLoader loader = new DocumentLoader(ua);
		batikBridgeContext = new BridgeContext(ua, loader);
		batikBridgeContext.setDynamicState(BridgeContext.DYNAMIC);
		ua.setBridgeContext(batikBridgeContext);

		GVTBuilder builder = new GVTBuilder();
		Document svgDoc;
		try {
			svgDoc = loader.loadDocument(this.uri);
			// System.out.println("Building: " + this.uri);
			GraphicsNode gvtRoot = builder.build(batikBridgeContext, svgDoc);

			this.transcode(gvtRoot);
		} catch (IOException ex) {
			Logger.getLogger(SvgTranscoder.class.getName()).log(Level.SEVERE,
					null, ex);
		}
	}
}