tests/org.eclipse.swt.tests.gtk/ManualTests/org/eclipse/swt/tests/gtk/snippets/Bug533728_CustomCursor.java

/*******************************************************************************
 * Copyright (c) 2018 Red Hat and others. All rights reserved.
 * The contents of this file are made available under the terms
 * of the GNU Lesser General Public License (LGPL) Version 2.1 that
 * accompanies this distribution (lgpl-v21.txt).  The LGPL is also
 * available at http://www.gnu.org/licenses/lgpl.html.  If the version
 * of the LGPL at http://www.gnu.org is different to the version of
 * the LGPL accompanying this distribution and there is any conflict
 * between the two license versions, the terms of the LGPL accompanying
 * this distribution shall govern.
 *
 * Contributors:
 *     Red Hat - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.tests.gtk.snippets;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class Bug533728_CustomCursor {
	public static void main(String[] args) {
		int CURSOR_SIZE = 32;

		Display display = new Display();
		Shell shell = new Shell(display);
		shell.setLayout(new FillLayout());
		Canvas canvas = new Canvas(shell, SWT.NONE);
		Image image = new Image(shell.getDisplay(), CURSOR_SIZE, CURSOR_SIZE);

		GC gc = new GC(image);
		gc.setLineWidth(2);
		gc.drawOval(1, 1, CURSOR_SIZE - 2, CURSOR_SIZE - 2);
		gc.dispose();

		ImageData imagedata = image.getImageData();
		Cursor cursor = new Cursor(shell.getDisplay(), imagedata, 0, 0);
		canvas.setCursor(cursor);
		image.dispose();

		shell.pack();
		shell.open();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch()) {
				display.sleep();
			}
		}
		display.dispose();
	}
}