examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet355.java

/*******************************************************************************
 * Copyright (c) 2000, 2011 IBM Corporation and others.
 * All rights reserved. This Example Content is intended to demonstrate
 * usage of Eclipse technology. It is provided to you under the terms and
 * conditions of the Eclipse Distribution License v1.0 which is available
 * at http://www.eclipse.org/org/documents/edl-v10.php
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * draw an image scaled to half size and double size
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

public class Snippet355 {
	public static void main (String [] args) {
		Display display = new Display ();
		Shell shell = new Shell (display, SWT.SHELL_TRIM | SWT.DOUBLE_BUFFERED);
		final Image image = display.getSystemImage (SWT.ICON_QUESTION);
		shell.addListener (SWT.Paint, new Listener () {
			public void handleEvent (Event e) {
				Rectangle rect = image.getBounds ();
				int width = rect.width;
				int height = rect.height;
				GC gc = e.gc;
				int x = 10, y = 10;
				gc.drawImage (image, 0, 0, width, height, x, y, width, height);
				gc.drawImage (image, 0, 0, width, height, x+width, y, (int)Math.round(width * 0.5), (int)Math.round(height * 0.5));
				gc.drawImage (image, 0, 0, width, height, x+width+(int)Math.round(width * 0.5), y, width * 2, height * 2);
			}
		});
		shell.setSize (600, 400);
		shell.open ();
		while (!shell.isDisposed ()) {
			if (!display.readAndDispatch ())
				display.sleep ();
		}
		display.dispose ();
	}
}