- /*
- * 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;
- }
- }
-
- }
|