/*

  * Copyright 2007 - 2009 JEuclid, http://jeuclid.sf.net

  * 

  * 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.

  */

 /* $Id: ImageIOConverter.java,v 916bcda78280 2009/08/28 07:32:36 max $ */

 package net.sourceforge.jeuclid.converter;

 import java.awt.Dimension;

 import java.awt.image.BufferedImage;

 import java.io.IOException;

 import java.io.OutputStream;

 import javax.imageio.ImageWriter;

 import javax.imageio.stream.ImageOutputStream;

 import javax.imageio.stream.MemoryCacheImageOutputStream;

 import net.sourceforge.jeuclid.LayoutContext;

 import org.w3c.dom.Node;

 /**

  * supports conversion to standard Raster formats through ImageIO.

  * 

  * @version $Revision: 916bcda78280 $

  */

 public class ImageIOConverter implements ConverterPlugin {

     private final ImageWriter writer;

     private final int colorModel;

     /**

      * Default constructor.

      * 

      * @param iw

      *            ImageWrite instance to use for this converter.

      * @param noAlpha

      *            if true, this image format does not support alpha values.

      */

     ImageIOConverter(final ImageWriter iw, final boolean noAlpha) {

         this.writer = iw;

         if (noAlpha) {

             this.colorModel = BufferedImage.TYPE_INT_RGB;

         } else {

             this.colorModel = BufferedImage.TYPE_INT_ARGB;

         }

     }

     /** {@inheritDoc} */

     public Dimension convert(final Node doc, final LayoutContext context,

             final OutputStream outStream) throws IOException {

         final ImageOutputStream ios = new MemoryCacheImageOutputStream(

                 outStream);

         final BufferedImage image = Converter.getInstance().render(doc,

                 context, this.colorModel);

         synchronized (this.writer) {

             this.writer.setOutput(ios);

             this.writer.write(image);

         }

         ios.close();

         return new Dimension(image.getWidth(), image.getHeight());

     }

     /** {@inheritDoc} */

     public DocumentWithDimension convert(final Node doc,

             final LayoutContext context) {

         return null;

     }

 }