Mercurial > jdk8-mips64-public > jaxws / file revision

 /*

  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.  Oracle designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Oracle in the LICENSE file that accompanied this code.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  */

 package com.sun.xml.internal.ws.encoding;

 import javax.activation.DataContentHandler;

 import javax.activation.ActivationDataFlavor;

 import javax.activation.DataSource;

 import javax.imageio.ImageIO;

 import javax.imageio.ImageWriter;

 import javax.imageio.stream.ImageOutputStream;

 import java.awt.*;

 import java.awt.image.BufferedImage;

 import java.awt.datatransfer.DataFlavor;

 import java.util.logging.Logger;

 import java.util.Iterator;

 import java.io.IOException;

 import java.io.BufferedInputStream;

 import java.io.OutputStream;

 import java.util.Arrays;

 /**

  * @author Jitendra Kotamraju

  */

 public class ImageDataContentHandler extends Component

     implements DataContentHandler {

     private static final Logger log = Logger.getLogger(ImageDataContentHandler.class.getName());

     private final DataFlavor[] flavor;

     public ImageDataContentHandler() {

         String[] mimeTypes = ImageIO.getReaderMIMETypes();

         flavor = new DataFlavor[mimeTypes.length];

         for(int i=0; i < mimeTypes.length; i++) {

             flavor[i] = new ActivationDataFlavor(Image.class, mimeTypes[i], "Image");

         }

     }

     /**

      * Returns an array of DataFlavor objects indicating the flavors the

      * data can be provided in. The array should be ordered according to

      * preference for providing the data (from most richly descriptive to

      * least descriptive).

      *

      * @return The DataFlavors.

      */

     public DataFlavor[] getTransferDataFlavors() {

         return Arrays.copyOf(flavor, flavor.length);

     }

     /**

      * Returns an object which represents the data to be transferred.

      * The class of the object returned is defined by the representation class

      * of the flavor.

      *

      * @param df The DataFlavor representing the requested type.

      * @param ds The DataSource representing the data to be converted.

      * @return The constructed Object.

      */

     public Object getTransferData(DataFlavor df, DataSource ds)

         throws IOException {

         for (DataFlavor aFlavor : flavor) {

             if (aFlavor.equals(df)) {

                 return getContent(ds);

             }

         }

         return null;

     }

     /**

      * Return an object representing the data in its most preferred form.

      * Generally this will be the form described by the first DataFlavor

      * returned by the <code>getTransferDataFlavors</code> method.

      *

      * @param ds The DataSource representing the data to be converted.

      * @return The constructed Object.

      */

     public Object getContent(DataSource ds) throws IOException {

         return ImageIO.read(new BufferedInputStream(ds.getInputStream()));

     }

     /**

      * Convert the object to a byte stream of the specified MIME type

      * and write it to the output stream.

      *

      * @param obj   The object to be converted.

      * @param type  The requested MIME type of the resulting byte stream.

      * @param os    The output stream into which to write the converted

      *          byte stream.

      */

     public void writeTo(Object obj, String type, OutputStream os)

         throws IOException {

         try {

             BufferedImage bufImage;

             if (obj instanceof BufferedImage) {

                 bufImage = (BufferedImage)obj;

             } else if (obj instanceof Image) {

                 bufImage = render((Image)obj);

             } else {

                 throw new IOException(

                     "ImageDataContentHandler requires Image object, "

                     + "was given object of type "

                     + obj.getClass().toString());

             }

             ImageWriter writer = null;

             Iterator<ImageWriter> i = ImageIO.getImageWritersByMIMEType(type);

             if (i.hasNext()) {

                 writer = i.next();

             }

             if (writer != null) {

                 ImageOutputStream stream = ImageIO.createImageOutputStream(os);

                 writer.setOutput(stream);

                 writer.write(bufImage);

                 writer.dispose();

                 stream.close();

             } else {

                 throw new IOException("Unsupported mime type:"+ type);

             }

         } catch (Exception e) {

             throw new IOException("Unable to encode the image to a stream "

                 + e.getMessage());

         }

     }

     private BufferedImage render(Image img) throws InterruptedException {

         MediaTracker tracker = new MediaTracker(this);

         tracker.addImage(img, 0);

         tracker.waitForAll();

         BufferedImage bufImage = new BufferedImage(img.getWidth(null),

             img.getHeight(null), BufferedImage.TYPE_INT_RGB);

         Graphics g = bufImage.createGraphics();

         g.drawImage(img, 0, 0, null);

         g.dispose();

         return bufImage;

     }

 }