| /* |
| * 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. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.visual; |
| |
| import java.awt.image.BufferedImage; |
| import java.io.File; |
| import java.net.URI; |
| |
| import org.apache.fop.configuration.Configurable; |
| import org.apache.fop.configuration.Configuration; |
| import org.apache.fop.configuration.ConfigurationException; |
| |
| /** |
| * BitmapProducer implementation that simply loads preproduced reference bitmaps from a |
| * certain directory. |
| * <p> |
| * Here's what the configuration element looks like for the class: |
| * <p> |
| * <pre> |
| * <producer classname="org.apache.fop.visual.ReferenceBitmapLoader"> |
| * <directory>C:/Temp/ref-bitmaps</directory> |
| * </producer> |
| * </pre> |
| */ |
| public class ReferenceBitmapLoader extends AbstractBitmapProducer implements Configurable { |
| |
| private File bitmapDirectory; |
| |
| public ReferenceBitmapLoader(URI baseUri) { |
| super(baseUri); |
| } |
| |
| public void configure(Configuration cfg) throws ConfigurationException { |
| this.bitmapDirectory = new File(cfg.getChild("directory").getValue(null)); |
| if (!bitmapDirectory.exists()) { |
| throw new ConfigurationException("Directory could not be found: " + bitmapDirectory); |
| } |
| } |
| |
| /** @see org.apache.fop.visual.BitmapProducer */ |
| public BufferedImage produce(File src, int index, ProducerContext context) { |
| try { |
| File bitmap = new File(bitmapDirectory, src.getName() + ".png"); |
| if (bitmap.exists()) { |
| return BitmapComparator.getImage(bitmap); |
| } else { |
| return null; |
| } |
| } catch (Exception e) { |
| log.error(e); |
| return null; |
| } |
| } |
| |
| } |