X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.utils.ui%2Fsrc%2Forg%2Fsimantics%2Futils%2Fui%2Fgfx%2Fclipboard%2FImageDataTransfer.java;fp=bundles%2Forg.simantics.utils.ui%2Fsrc%2Forg%2Fsimantics%2Futils%2Fui%2Fgfx%2Fclipboard%2FImageDataTransfer.java;h=19049c38cd3271d308b84d086c20dcbcfacc24d4;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/gfx/clipboard/ImageDataTransfer.java b/bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/gfx/clipboard/ImageDataTransfer.java
new file mode 100644
index 000000000..19049c38c
--- /dev/null
+++ b/bundles/org.simantics.utils.ui/src/org/simantics/utils/ui/gfx/clipboard/ImageDataTransfer.java
@@ -0,0 +1,106 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.utils.ui.gfx.clipboard;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.dnd.ByteArrayTransfer;
+import org.eclipse.swt.dnd.TransferData;
+import org.eclipse.swt.graphics.ImageData;
+import org.eclipse.swt.graphics.ImageLoader;
+import org.simantics.utils.ui.ErrorLogger;
+import org.simantics.utils.ui.gfx.clipboard.headers.Win32Constants;
+import org.simantics.utils.ui.gfx.clipboard.streams.AddBitmapHeaderInputStream;
+import org.simantics.utils.ui.gfx.clipboard.streams.RemoveBitmapHeaderOutputStream;
+import org.simantics.utils.ui.gfx.clipboard.streams.UncompressedDIBInputStream;
+
+
+/**
+ * Transfer class for handing image cut/copy/paste operations between Eclipse
+ * and native WIN32 apps
+ * 
+ * @author Marko Luukkainen
+ *
+ */
+public class ImageDataTransfer extends ByteArrayTransfer {
+
+    private static final ImageDataTransfer instance = new ImageDataTransfer();
+
+    private static final String CF_DIB = "CF_DIB";
+
+    private ImageDataTransfer() {
+        //
+    }
+
+    public static ImageDataTransfer getInstance() {
+        return ImageDataTransfer.instance;
+    }
+
+    /* (non-Javadoc)
+     * @see org.eclipse.swt.dnd.Transfer#getTypeIds()
+     */
+    @Override
+    protected final int[] getTypeIds() {
+        return new int[] { Win32Constants.CF_DIB };
+    }
+
+    /* (non-Javadoc)
+     * @see org.eclipse.swt.dnd.Transfer#getTypeNames()
+     */
+    @Override
+    protected final String[] getTypeNames() {
+        return new String[] { ImageDataTransfer.CF_DIB };
+    }
+
+    /* (non-Javadoc)
+     * @see org.eclipse.swt.dnd.ByteArrayTransfer#nativeToJava(org.eclipse.swt.dnd.TransferData)
+     */
+    @Override
+    protected Object nativeToJava(TransferData transferData) {
+        final Object o = super.nativeToJava(transferData);
+        final byte[] bytes = (byte[]) o;
+
+        try {
+            final InputStream iStream = new AddBitmapHeaderInputStream(
+                    new UncompressedDIBInputStream(new ByteArrayInputStream(
+                            bytes)));
+            final ImageData[] data = new ImageLoader().load(iStream);
+            if (data.length <= 0) {
+                return null;
+            }
+            return data[0];
+        } catch (IOException e) {
+            ErrorLogger.defaultLogError("Cannot get image from clipboard", e);
+            return null;
+        }
+    }
+
+    /* (non-Javadoc)
+     * @see org.eclipse.swt.dnd.ByteArrayTransfer#javaToNative(java.lang.Object, org.eclipse.swt.dnd.TransferData)
+     */
+    @Override
+    protected void javaToNative(Object object, TransferData transferData) {
+        final ImageData imgData = (ImageData) object;
+        final ImageLoader loader = new ImageLoader();
+        final ByteArrayOutputStream oStream = new ByteArrayOutputStream();
+        final byte[] bytes;
+
+        loader.data = new ImageData[] { imgData };
+        loader.save(new RemoveBitmapHeaderOutputStream(oStream), SWT.IMAGE_BMP);
+        bytes = oStream.toByteArray();
+        super.javaToNative(bytes, transferData);
+    }
+}