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The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.

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/*
 *  ====================================================================
 *    Licensed to the Apache Software Foundation (ASF) under one or more
 *    contributor license agreements.  See the NOTICE file distributed with
 *    this work for additional information regarding copyright ownership.
 *    The ASF licenses this file to You 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.apache.poi.xslf.util;

import java.awt.Dimension;
import java.awt.Graphics2D;
import java.io.File;
import java.io.IOException;

import org.apache.batik.dom.GenericDOMImplementation;
import org.apache.batik.svggen.SVGGraphics2D;
import org.apache.poi.util.Internal;
import org.apache.poi.xslf.draw.SVGPOIGraphics2D;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;

@Internal
public class SVGFormat implements OutputFormat {
    static final String svgNS = "http://www.w3.org/2000/svg";
    private SVGGraphics2D svgGenerator;
    private final boolean textAsShapes;

    public SVGFormat(boolean textAsShapes) {
        this.textAsShapes = textAsShapes;
    }

    @Override
    public Graphics2D addSlide(double width, double height) {
        // Get a DOMImplementation.
        DOMImplementation domImpl = GenericDOMImplementation.getDOMImplementation();

        // Create an instance of org.w3c.dom.Document.
        Document document = domImpl.createDocument(svgNS, "svg", null);
        svgGenerator = new SVGPOIGraphics2D(document, textAsShapes);
        svgGenerator.setSVGCanvasSize(new Dimension((int)width, (int)height));
        return svgGenerator;
    }

    @Override
    public void writeSlide(MFProxy proxy, File outFile) throws IOException {
        svgGenerator.stream(outFile.getCanonicalPath(), true);
    }

    @Override
    public void close() throws IOException {
        svgGenerator.dispose();
    }
}