/*

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   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
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       http://www.apache.org/licenses/LICENSE-2.0

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package org.apache.batik.svggen;

import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;

import org.apache.batik.ext.awt.image.spi.ImageWriter;
import org.apache.batik.ext.awt.image.spi.ImageWriterParams;
import org.apache.batik.ext.awt.image.spi.ImageWriterRegistry;

GenericImageHandler which caches JPEG images.
Author:Paul Evenblij
Version:$Id: CachedImageHandlerJPEGEncoder.java 1733416 2016-03-03 07:07:13Z gadams $
/** * GenericImageHandler which caches JPEG images. * * @author <a href="mailto:paul_evenblij@compuware.com">Paul Evenblij</a> * @version $Id: CachedImageHandlerJPEGEncoder.java 1733416 2016-03-03 07:07:13Z gadams $ */
public class CachedImageHandlerJPEGEncoder extends DefaultCachedImageHandler { public static final String CACHED_JPEG_PREFIX = "jpegImage"; public static final String CACHED_JPEG_SUFFIX = ".jpg"; protected String refPrefix = "";
Params:
  • imageDir – directory where this handler should generate images. If null, an IllegalArgumentException is thrown.
  • urlRoot – root for the urls that point to images created by this image handler. If null, then the url corresponding to imageDir is used.
/** * @param imageDir directory where this handler should generate images. * If null, an IllegalArgumentException is thrown. * @param urlRoot root for the urls that point to images created by this * image handler. If null, then the url corresponding to imageDir * is used. */
public CachedImageHandlerJPEGEncoder(String imageDir, String urlRoot) throws SVGGraphics2DIOException { refPrefix = urlRoot + "/"; setImageCacher(new ImageCacher.External(imageDir, CACHED_JPEG_PREFIX, CACHED_JPEG_SUFFIX)); }
Uses JPEG encoding.
/** * Uses JPEG encoding. */
public void encodeImage(BufferedImage buf, OutputStream os) throws IOException { ImageWriter writer = ImageWriterRegistry.getInstance() .getWriterFor("image/jpeg"); ImageWriterParams params = new ImageWriterParams(); params.setJPEGQuality(1, false); writer.writeImage(buf, os, params); } public int getBufferedImageType(){ return BufferedImage.TYPE_INT_RGB; } public String getRefPrefix(){ return refPrefix; } }