All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.eclipse.swt.dnd.ImageTransfer Maven / Gradle / Ivy

Go to download

The osx x86_64 swt jar as available in the Eclipse 4.6 (Neon) release for OSX. It is suitable for use with jface and other dependencies available from maven central in the org.eclipse.scout.sdk.deps group. The sources is copied from swt-4.6-cocoa-macosx-x86_64.zip from http://download.eclipse.org/eclipse/downloads/drops4/R-4.6-201606061100/ and javadoc is generated from sources.

The newest version!
/*******************************************************************************
 * Copyright (c) 2007, 2008 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *     Outhink - support for typeFileURL
 *******************************************************************************/
package org.eclipse.swt.dnd;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.internal.cocoa.*;
import org.eclipse.swt.widgets.*;

/**
 * The class ImageTransfer provides a platform specific mechanism
 * for converting an Image represented as a java ImageData to a
 * platform specific representation of the data and vice versa.
 *
 * 

An example of a java ImageData is shown below:

* *
 *     Image image = new Image(display, "C:\temp\img1.gif");
 *	   ImageData imgData = image.getImageData();
 * 
* * @see Transfer * * @since 3.4 */ public class ImageTransfer extends ByteArrayTransfer { static ImageTransfer _instance = new ImageTransfer(); static final String TIFF = OS.NSTIFFPboardType.getString(); static final int TIFFID = registerType(TIFF); ImageTransfer() { } /** * Returns the singleton instance of the ImageTransfer class. * * @return the singleton instance of the ImageTransfer class */ public static ImageTransfer getInstance() { return _instance; } /** * This implementation of javaToNative converts an ImageData object represented * by java ImageData to a platform specific representation. * * @param object a java ImageData containing the ImageData to be converted * @param transferData an empty TransferData object that will * be filled in on return with the platform specific format of the data * * @see Transfer#nativeToJava */ @Override public void javaToNative(Object object, TransferData transferData) { if (!checkImage(object) || !isSupportedType(transferData)) { DND.error(DND.ERROR_INVALID_DATA); } ImageData imgData = (ImageData) object; Image image = new Image(Display.getCurrent(), imgData); NSImage handle = image.handle; transferData.data = handle.TIFFRepresentation(); image.dispose(); } /** * This implementation of nativeToJava converts a platform specific * representation of an image to java ImageData. * * @param transferData the platform specific representation of the data to be converted * @return a java ImageData of the image if the conversion was successful; * otherwise null * * @see Transfer#javaToNative */ @Override public Object nativeToJava(TransferData transferData) { if (!isSupportedType(transferData) || transferData.data == null) return null; NSData data = (NSData) transferData.data; if (data.length() == 0) return null; NSImage nsImage = (NSImage) new NSImage().alloc(); nsImage.initWithData(data); NSSize size = nsImage.size(); NSImageRep rep = nsImage.bestRepresentationForDevice(null); if (size.width != rep.pixelsWide() || size.height != rep.pixelsHigh()) { size.width /= (rep.pixelsWide() / size.width); size.height /= (rep.pixelsHigh() / size.height); NSImage newImage = ((NSImage)new NSImage().alloc()).initWithSize(size); newImage.lockFocus(); NSRect rect = new NSRect(); rect.width = size.width; rect.height = size.height; nsImage.drawInRect(rect, new NSRect(), OS.NSCompositeCopy, 1); newImage.unlockFocus(); nsImage.release(); nsImage = newImage; } //TODO: Image representation wrong??? Image image = Image.cocoa_new(Display.getCurrent(), SWT.BITMAP, nsImage); ImageData imageData = image.getImageData(); image.dispose(); return imageData; } @Override protected int[] getTypeIds() { return new int[] { TIFFID }; } @Override protected String[] getTypeNames() { return new String[] { TIFF }; } boolean checkImage(Object object) { if (object == null || !(object instanceof ImageData)) return false; return true; } @Override protected boolean validate(Object object) { return checkImage(object); } }




© 2015 - 2025 Weber Informatics LLC | Privacy Policy