/*
* Copyright 2009 Red Hat, Inc.
* Portions licensed by WSO2, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.jboss.soa.bpel.bpel2svg;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import org.apache.batik.transcoder.TranscoderException;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.batik.transcoder.image.PNGTranscoder;
/**
* This class represents the transformer from the SVG document object model
* to an output stream representing the image to be displayed.
*
*/
public class SVGToPNGImageTransformer implements SVGImageTransformer {
/**
* This method transforms a supplied SVG document into an image written
* to the supplied output stream.
*
* @param svg The SVG document
* @param os The output stream
* @throws IOException Failed to transform the SVG doc into an image
*/
public void transform(org.wso2.carbon.bpel.ui.bpel2svg.SVGInterface svg,
java.io.OutputStream os) throws IOException {
// Create a PNG transcoder
PNGTranscoder pngTranscoder = new PNGTranscoder();
// Create the transcoder input.
String inputString = svg.getHeaders() + svg.generateSVGString();
//SVGDocument svgDoc = svg.getRootActivity().getSVGDocument();
//TranscoderInput transcoderInput = new TranscoderInput(svgDoc);
Reader stringReader = new StringReader(inputString);
TranscoderInput transcoderInput = new TranscoderInput(stringReader);
// Create the transcoder output.
TranscoderOutput transcoderOutput = new TranscoderOutput(os);
try {
pngTranscoder.transcode(transcoderInput, transcoderOutput);
} catch (TranscoderException te) {
// code compatible with jdk 1.5
IOException ioe = new IOException("Transcoder error");
ioe.initCause(te);
throw ioe;
}
}
}