--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.utils.ui.gfx.clipboard;\r
+\r
+import java.io.ByteArrayInputStream;\r
+import java.io.ByteArrayOutputStream;\r
+import java.io.IOException;\r
+import java.io.InputStream;\r
+\r
+import org.eclipse.swt.SWT;\r
+import org.eclipse.swt.dnd.ByteArrayTransfer;\r
+import org.eclipse.swt.dnd.TransferData;\r
+import org.eclipse.swt.graphics.ImageData;\r
+import org.eclipse.swt.graphics.ImageLoader;\r
+import org.simantics.utils.ui.ErrorLogger;\r
+import org.simantics.utils.ui.gfx.clipboard.headers.Win32Constants;\r
+import org.simantics.utils.ui.gfx.clipboard.streams.AddBitmapHeaderInputStream;\r
+import org.simantics.utils.ui.gfx.clipboard.streams.RemoveBitmapHeaderOutputStream;\r
+import org.simantics.utils.ui.gfx.clipboard.streams.UncompressedDIBInputStream;\r
+\r
+\r
+/**\r
+ * Transfer class for handing image cut/copy/paste operations between Eclipse\r
+ * and native WIN32 apps\r
+ * \r
+ * @author Marko Luukkainen\r
+ *\r
+ */\r
+public class ImageDataTransfer extends ByteArrayTransfer {\r
+\r
+ private static final ImageDataTransfer instance = new ImageDataTransfer();\r
+\r
+ private static final String CF_DIB = "CF_DIB";\r
+\r
+ private ImageDataTransfer() {\r
+ //\r
+ }\r
+\r
+ public static ImageDataTransfer getInstance() {\r
+ return ImageDataTransfer.instance;\r
+ }\r
+\r
+ /* (non-Javadoc)\r
+ * @see org.eclipse.swt.dnd.Transfer#getTypeIds()\r
+ */\r
+ @Override\r
+ protected final int[] getTypeIds() {\r
+ return new int[] { Win32Constants.CF_DIB };\r
+ }\r
+\r
+ /* (non-Javadoc)\r
+ * @see org.eclipse.swt.dnd.Transfer#getTypeNames()\r
+ */\r
+ @Override\r
+ protected final String[] getTypeNames() {\r
+ return new String[] { ImageDataTransfer.CF_DIB };\r
+ }\r
+\r
+ /* (non-Javadoc)\r
+ * @see org.eclipse.swt.dnd.ByteArrayTransfer#nativeToJava(org.eclipse.swt.dnd.TransferData)\r
+ */\r
+ @Override\r
+ protected Object nativeToJava(TransferData transferData) {\r
+ final Object o = super.nativeToJava(transferData);\r
+ final byte[] bytes = (byte[]) o;\r
+\r
+ try {\r
+ final InputStream iStream = new AddBitmapHeaderInputStream(\r
+ new UncompressedDIBInputStream(new ByteArrayInputStream(\r
+ bytes)));\r
+ final ImageData[] data = new ImageLoader().load(iStream);\r
+ if (data.length <= 0) {\r
+ return null;\r
+ }\r
+ return data[0];\r
+ } catch (IOException e) {\r
+ ErrorLogger.defaultLogError("Cannot get image from clipboard", e);\r
+ return null;\r
+ }\r
+ }\r
+\r
+ /* (non-Javadoc)\r
+ * @see org.eclipse.swt.dnd.ByteArrayTransfer#javaToNative(java.lang.Object, org.eclipse.swt.dnd.TransferData)\r
+ */\r
+ @Override\r
+ protected void javaToNative(Object object, TransferData transferData) {\r
+ final ImageData imgData = (ImageData) object;\r
+ final ImageLoader loader = new ImageLoader();\r
+ final ByteArrayOutputStream oStream = new ByteArrayOutputStream();\r
+ final byte[] bytes;\r
+\r
+ loader.data = new ImageData[] { imgData };\r
+ loader.save(new RemoveBitmapHeaderOutputStream(oStream), SWT.IMAGE_BMP);\r
+ bytes = oStream.toByteArray();\r
+ super.javaToNative(bytes, transferData);\r
+ }\r
+}\r