| /* |
| |
| 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.batik.svggen; |
| |
| import java.awt.Rectangle; |
| import java.awt.image.BufferedImageOp; |
| |
| import org.w3c.dom.Element; |
| |
| /** |
| * Utility class that converts an custom BufferedImageOp object into |
| * an equivalent SVG filter. |
| * |
| * @author <a href="mailto:vincent.hardy@eng.sun.com">Vincent Hardy</a> |
| * @version $Id$ |
| * @see org.apache.batik.svggen.SVGBufferedImageOp |
| */ |
| public class SVGCustomBufferedImageOp extends AbstractSVGFilterConverter { |
| private static final String ERROR_EXTENSION = |
| "SVGCustomBufferedImageOp:: ExtensionHandler could not convert filter"; |
| |
| /** |
| * @param generatorContext for use by SVGCustomBufferedImageOp to |
| * build Elements. |
| */ |
| public SVGCustomBufferedImageOp(SVGGeneratorContext generatorContext) { |
| super(generatorContext); |
| } |
| |
| /** |
| * @param filter the BufferedImageOp object to convert to SVG |
| * @param filterRect Rectangle, in device space, that defines the area |
| * to which filtering applies. May be null, meaning that the |
| * area is undefined. |
| * @return an SVGFilterDescriptor mapping the SVG |
| * BufferedImageOp equivalent to the input BufferedImageOp. |
| */ |
| public SVGFilterDescriptor toSVG(BufferedImageOp filter, |
| Rectangle filterRect) { |
| SVGFilterDescriptor filterDesc = |
| (SVGFilterDescriptor)descMap.get(filter); |
| |
| if (filterDesc == null) { |
| // First time this filter is used. Request handler |
| // to do the convertion |
| filterDesc = |
| generatorContext.extensionHandler. |
| handleFilter(filter, filterRect, generatorContext); |
| |
| if (filterDesc != null) { |
| Element def = filterDesc.getDef(); |
| if(def != null) |
| defSet.add(def); |
| descMap.put(filter, filterDesc); |
| } else { |
| System.err.println(ERROR_EXTENSION); |
| } |
| } |
| |
| return filterDesc; |
| } |
| |
| } |
| |