1 /*******************************************************************************
\r
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
\r
3 * in Industry THTH ry.
\r
4 * All rights reserved. This program and the accompanying materials
\r
5 * are made available under the terms of the Eclipse Public License v1.0
\r
6 * which accompanies this distribution, and is available at
\r
7 * http://www.eclipse.org/legal/epl-v10.html
\r
10 * VTT Technical Research Centre of Finland - initial API and implementation
\r
11 *******************************************************************************/
\r
12 package org.simantics.utils.ui.gfx.clipboard;
\r
14 import java.io.ByteArrayInputStream;
\r
15 import java.io.ByteArrayOutputStream;
\r
16 import java.io.IOException;
\r
17 import java.io.InputStream;
\r
19 import org.eclipse.swt.SWT;
\r
20 import org.eclipse.swt.dnd.ByteArrayTransfer;
\r
21 import org.eclipse.swt.dnd.TransferData;
\r
22 import org.eclipse.swt.graphics.ImageData;
\r
23 import org.eclipse.swt.graphics.ImageLoader;
\r
24 import org.simantics.utils.ui.ErrorLogger;
\r
25 import org.simantics.utils.ui.gfx.clipboard.headers.Win32Constants;
\r
26 import org.simantics.utils.ui.gfx.clipboard.streams.AddBitmapHeaderInputStream;
\r
27 import org.simantics.utils.ui.gfx.clipboard.streams.RemoveBitmapHeaderOutputStream;
\r
28 import org.simantics.utils.ui.gfx.clipboard.streams.UncompressedDIBInputStream;
\r
32 * Transfer class for handing image cut/copy/paste operations between Eclipse
\r
33 * and native WIN32 apps
\r
35 * @author Marko Luukkainen
\r
38 public class ImageDataTransfer extends ByteArrayTransfer {
\r
40 private static final ImageDataTransfer instance = new ImageDataTransfer();
\r
42 private static final String CF_DIB = "CF_DIB";
\r
44 private ImageDataTransfer() {
\r
48 public static ImageDataTransfer getInstance() {
\r
49 return ImageDataTransfer.instance;
\r
53 * @see org.eclipse.swt.dnd.Transfer#getTypeIds()
\r
56 protected final int[] getTypeIds() {
\r
57 return new int[] { Win32Constants.CF_DIB };
\r
61 * @see org.eclipse.swt.dnd.Transfer#getTypeNames()
\r
64 protected final String[] getTypeNames() {
\r
65 return new String[] { ImageDataTransfer.CF_DIB };
\r
69 * @see org.eclipse.swt.dnd.ByteArrayTransfer#nativeToJava(org.eclipse.swt.dnd.TransferData)
\r
72 protected Object nativeToJava(TransferData transferData) {
\r
73 final Object o = super.nativeToJava(transferData);
\r
74 final byte[] bytes = (byte[]) o;
\r
77 final InputStream iStream = new AddBitmapHeaderInputStream(
\r
78 new UncompressedDIBInputStream(new ByteArrayInputStream(
\r
80 final ImageData[] data = new ImageLoader().load(iStream);
\r
81 if (data.length <= 0) {
\r
85 } catch (IOException e) {
\r
86 ErrorLogger.defaultLogError("Cannot get image from clipboard", e);
\r
92 * @see org.eclipse.swt.dnd.ByteArrayTransfer#javaToNative(java.lang.Object, org.eclipse.swt.dnd.TransferData)
\r
95 protected void javaToNative(Object object, TransferData transferData) {
\r
96 final ImageData imgData = (ImageData) object;
\r
97 final ImageLoader loader = new ImageLoader();
\r
98 final ByteArrayOutputStream oStream = new ByteArrayOutputStream();
\r
101 loader.data = new ImageData[] { imgData };
\r
102 loader.save(new RemoveBitmapHeaderOutputStream(oStream), SWT.IMAGE_BMP);
\r
103 bytes = oStream.toByteArray();
\r
104 super.javaToNative(bytes, transferData);
\r