/*
Copyright 2001,2003 The Apache Software Foundation
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.apache.flex.forks.batik.svggen;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.flex.forks.batik.ext.awt.image.codec.ImageEncoder;
import org.apache.flex.forks.batik.ext.awt.image.codec.PNGImageEncoder;
/**
* GenericImageHandler which caches PNG images.
*
* @author <a href="mailto:paul_evenblij@compuware.com">Paul Evenblij</a>
* @version $Id: CachedImageHandlerPNGEncoder.java,v 1.5 2004/08/18 07:14:59 vhardy Exp $
*/
public class CachedImageHandlerPNGEncoder extends DefaultCachedImageHandler {
public static final String CACHED_PNG_PREFIX = "pngImage";
public static final String CACHED_PNG_SUFFIX = ".png";
protected String refPrefix = "";
/**
* @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 CachedImageHandlerPNGEncoder(String imageDir, String urlRoot)
throws SVGGraphics2DIOException {
refPrefix = urlRoot + "/";
setImageCacher(new ImageCacher.External(imageDir,
CACHED_PNG_PREFIX,
CACHED_PNG_SUFFIX));
}
/**
* Uses PNG encoding.
*/
public void encodeImage(BufferedImage buf, OutputStream os)
throws IOException {
ImageEncoder encoder = new PNGImageEncoder(os, null);
encoder.encode(buf);
}
public int getBufferedImageType(){
return BufferedImage.TYPE_INT_ARGB;
}
public String getRefPrefix(){
return refPrefix;
}
}