/**
* 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.cxf.attachment;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Iterator;
import javax.activation.ActivationDataFlavor;
import javax.activation.DataContentHandler;
import javax.activation.DataSource;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageOutputStream;
/**
*
*/
public class ImageDataContentHandler implements DataContentHandler {
private static final DataFlavor[] FLAVORS;
static {
String[] types = ImageIO.getReaderMIMETypes();
FLAVORS = new DataFlavor[types.length];
int i = 0;
for (String type : types) {
FLAVORS[i++] = new ActivationDataFlavor(Image.class, type, "Image");
}
}
public Object getContent(DataSource ds) throws IOException {
return ImageIO.read(ds.getInputStream());
}
public Object getTransferData(DataFlavor df, DataSource ds) throws UnsupportedFlavorException,
IOException {
for (DataFlavor f : FLAVORS) {
if (f.equals(df)) {
return getContent(ds);
}
}
return null;
}
public DataFlavor[] getTransferDataFlavors() {
return FLAVORS;
}
public void writeTo(Object obj, String mimeType, OutputStream os) throws IOException {
Iterator<ImageWriter> writers = ImageIO.getImageWritersByMIMEType(mimeType);
if (writers.hasNext()) {
ImageWriter writer = writers.next();
BufferedImage bimg = convertToBufferedImage((Image)obj);
ImageOutputStream out = ImageIO.createImageOutputStream(os);
writer.setOutput(out);
writer.write(bimg);
writer.dispose();
out.flush();
out.close();
} else {
throw new IOException("Attachment type not spported " + obj.getClass());
}
}
private static BufferedImage convertToBufferedImage(Image image) throws IOException {
if (image instanceof BufferedImage) {
return (BufferedImage)image;
}
// Wait until the image is completely loaded
MediaTracker tracker = new MediaTracker(new Component() { });
tracker.addImage(image, 0);
try {
tracker.waitForAll();
} catch (InterruptedException e) {
IOException ioe = new IOException(e.getMessage());
ioe.initCause(e);
throw ioe;
}
// Create a BufferedImage so we can write it out later
BufferedImage bufImage = new BufferedImage(
image.getWidth(null),
image.getHeight(null),
BufferedImage.TYPE_INT_ARGB);
Graphics g = bufImage.createGraphics();
g.drawImage(image, 0, 0, null);
g.dispose();
return bufImage;
}
}