ohair@286: /*
alanb@368: * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
ohair@286: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohair@286: *
ohair@286: * This code is free software; you can redistribute it and/or modify it
ohair@286: * under the terms of the GNU General Public License version 2 only, as
ohair@286: * published by the Free Software Foundation. Oracle designates this
ohair@286: * particular file as subject to the "Classpath" exception as provided
ohair@286: * by Oracle in the LICENSE file that accompanied this code.
ohair@286: *
ohair@286: * This code is distributed in the hope that it will be useful, but WITHOUT
ohair@286: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohair@286: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
ohair@286: * version 2 for more details (a copy is included in the LICENSE file that
ohair@286: * accompanied this code).
ohair@286: *
ohair@286: * You should have received a copy of the GNU General Public License version
ohair@286: * 2 along with this work; if not, write to the Free Software Foundation,
ohair@286: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohair@286: *
ohair@286: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@286: * or visit www.oracle.com if you need additional information or have any
ohair@286: * questions.
ohair@286: */
ohair@286:
ohair@286: package com.sun.xml.internal.ws.encoding;
ohair@286:
ohair@286: import javax.activation.DataContentHandler;
ohair@286: import javax.activation.ActivationDataFlavor;
ohair@286: import javax.activation.DataSource;
ohair@286: import javax.imageio.ImageIO;
ohair@286: import javax.imageio.ImageWriter;
ohair@286: import javax.imageio.stream.ImageOutputStream;
ohair@286: import java.awt.*;
ohair@286: import java.awt.image.BufferedImage;
ohair@286: import java.awt.datatransfer.DataFlavor;
ohair@286: import java.util.logging.Logger;
ohair@286: import java.util.Iterator;
ohair@286: import java.io.IOException;
ohair@286: import java.io.BufferedInputStream;
ohair@286: import java.io.OutputStream;
ohair@286: import java.util.Arrays;
ohair@286:
ohair@286: /**
ohair@286: * @author Jitendra Kotamraju
ohair@286: */
ohair@286:
ohair@286: public class ImageDataContentHandler extends Component
ohair@286: implements DataContentHandler {
ohair@286:
ohair@286: private static final Logger log = Logger.getLogger(ImageDataContentHandler.class.getName());
ohair@286: private final DataFlavor[] flavor;
ohair@286:
ohair@286: public ImageDataContentHandler() {
ohair@286: String[] mimeTypes = ImageIO.getReaderMIMETypes();
ohair@286: flavor = new DataFlavor[mimeTypes.length];
ohair@286: for(int i=0; i < mimeTypes.length; i++) {
ohair@286: flavor[i] = new ActivationDataFlavor(Image.class, mimeTypes[i], "Image");
ohair@286: }
ohair@286: }
ohair@286:
ohair@286: /**
ohair@286: * Returns an array of DataFlavor objects indicating the flavors the
ohair@286: * data can be provided in. The array should be ordered according to
ohair@286: * preference for providing the data (from most richly descriptive to
ohair@286: * least descriptive).
ohair@286: *
ohair@286: * @return The DataFlavors.
ohair@286: */
ohair@286: public DataFlavor[] getTransferDataFlavors() {
ohair@286: return Arrays.copyOf(flavor, flavor.length);
ohair@286: }
ohair@286:
ohair@286: /**
ohair@286: * Returns an object which represents the data to be transferred.
ohair@286: * The class of the object returned is defined by the representation class
ohair@286: * of the flavor.
ohair@286: *
ohair@286: * @param df The DataFlavor representing the requested type.
ohair@286: * @param ds The DataSource representing the data to be converted.
ohair@286: * @return The constructed Object.
ohair@286: */
ohair@286: public Object getTransferData(DataFlavor df, DataSource ds)
ohair@286: throws IOException {
ohair@286: for (DataFlavor aFlavor : flavor) {
ohair@286: if (aFlavor.equals(df)) {
ohair@286: return getContent(ds);
ohair@286: }
ohair@286: }
ohair@286: return null;
ohair@286: }
ohair@286:
ohair@286: /**
ohair@286: * Return an object representing the data in its most preferred form.
ohair@286: * Generally this will be the form described by the first DataFlavor
ohair@286: * returned by the getTransferDataFlavors
method.
ohair@286: *
ohair@286: * @param ds The DataSource representing the data to be converted.
ohair@286: * @return The constructed Object.
ohair@286: */
ohair@286: public Object getContent(DataSource ds) throws IOException {
ohair@286: return ImageIO.read(new BufferedInputStream(ds.getInputStream()));
ohair@286: }
ohair@286:
ohair@286: /**
ohair@286: * Convert the object to a byte stream of the specified MIME type
ohair@286: * and write it to the output stream.
ohair@286: *
ohair@286: * @param obj The object to be converted.
ohair@286: * @param type The requested MIME type of the resulting byte stream.
ohair@286: * @param os The output stream into which to write the converted
ohair@286: * byte stream.
ohair@286: */
ohair@286:
ohair@286: public void writeTo(Object obj, String type, OutputStream os)
ohair@286: throws IOException {
ohair@286:
ohair@286: try {
ohair@286: BufferedImage bufImage;
ohair@286: if (obj instanceof BufferedImage) {
ohair@286: bufImage = (BufferedImage)obj;
ohair@286: } else if (obj instanceof Image) {
ohair@286: bufImage = render((Image)obj);
ohair@286: } else {
ohair@286: throw new IOException(
ohair@286: "ImageDataContentHandler requires Image object, "
ohair@286: + "was given object of type "
ohair@286: + obj.getClass().toString());
ohair@286: }
ohair@286: ImageWriter writer = null;
ohair@286: Iterator i = ImageIO.getImageWritersByMIMEType(type);
ohair@286: if (i.hasNext()) {
ohair@286: writer = i.next();
ohair@286: }
ohair@286: if (writer != null) {
ohair@286: ImageOutputStream stream = ImageIO.createImageOutputStream(os);
ohair@286: writer.setOutput(stream);
ohair@286: writer.write(bufImage);
ohair@286: writer.dispose();
ohair@286: stream.close();
ohair@286: } else {
ohair@286: throw new IOException("Unsupported mime type:"+ type);
ohair@286: }
ohair@286: } catch (Exception e) {
ohair@286: throw new IOException("Unable to encode the image to a stream "
ohair@286: + e.getMessage());
ohair@286: }
ohair@286: }
ohair@286:
ohair@286:
ohair@286: private BufferedImage render(Image img) throws InterruptedException {
ohair@286:
ohair@286: MediaTracker tracker = new MediaTracker(this);
ohair@286: tracker.addImage(img, 0);
ohair@286: tracker.waitForAll();
ohair@286: BufferedImage bufImage = new BufferedImage(img.getWidth(null),
ohair@286: img.getHeight(null), BufferedImage.TYPE_INT_RGB);
ohair@286: Graphics g = bufImage.createGraphics();
ohair@286: g.drawImage(img, 0, 0, null);
ohair@286: g.dispose();
ohair@286: return bufImage;
ohair@286: }
ohair@286:
ohair@286: }