| /* |
| * 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.taverna.renderers.impl; |
| |
| import static javax.imageio.ImageIO.getReaderMIMETypes; |
| import static javax.imageio.ImageIO.getWriterFormatNames; |
| import static org.apache.taverna.renderers.RendererUtils.getInputStream; |
| import static org.apache.taverna.renderers.impl.RendererConstants.SEE_LOG_MSG; |
| |
| import java.awt.Image; |
| import java.io.InputStream; |
| import java.nio.file.Path; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import javax.imageio.ImageIO; |
| import javax.swing.ImageIcon; |
| import javax.swing.JComponent; |
| import javax.swing.JLabel; |
| import javax.swing.JTextArea; |
| |
| import org.apache.log4j.Logger; |
| |
| /** |
| * Advanced renderer for mime type image/* that can render tiff files. Uses Java |
| * Advanced Imaging (JAI) ImageIO from https://jai-imageio.dev.java.net/. |
| * |
| * @author Alex Nenadic |
| * @author David Withers |
| */ |
| public class AdvancedImageRenderer extends AbstractRenderer { |
| private static final String BAD_FORMAT_MSG = "Data does not seem to contain an image in any of the recognised formats:\n"; |
| private static final String UNRENDERABLE_MSG = "Failed to create image renderer " + SEE_LOG_MSG; |
| |
| private Logger logger = Logger.getLogger(AdvancedImageRenderer.class); |
| private List<String> mimeTypesList; |
| |
| public AdvancedImageRenderer() { |
| mimeTypesList = Arrays.asList(getReaderMIMETypes()); |
| } |
| |
| @Override |
| public boolean canHandle(String mimeType) { |
| return mimeTypesList.contains(mimeType); |
| } |
| |
| @Override |
| public String getType() { |
| return "Image"; |
| } |
| |
| @Override |
| public JComponent getRendererComponent(Path path) { |
| // Render into a label |
| try (InputStream inputStream = getInputStream(path)) { |
| Image image = ImageIO.read(inputStream); |
| if (image == null) |
| return new JTextArea(BAD_FORMAT_MSG |
| + Arrays.asList(getWriterFormatNames())); |
| return new JLabel(new ImageIcon(image)); |
| } catch (Exception e) { |
| logger.error("unrenderable: failed to create image renderer", e); |
| return new JTextArea(UNRENDERABLE_MSG + e.getMessage()); |
| } |
| } |
| |
| @Override |
| protected int getSizeLimit() { |
| return 4; |
| } |
| |
| @Override |
| protected String getResultType() { |
| return "Image"; |
| } |
| } |