examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet281.java

/*******************************************************************************
 * Copyright (c) 2000, 2016 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * draw a multi-gradient
 *
 * 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.layout.*;
import org.eclipse.swt.widgets.*;

public class Snippet281 {

public static void main (String [] args) {
	final Display display = new Display ();
	final Shell shell = new Shell (display, SWT.SHELL_TRIM | SWT.NO_BACKGROUND);
	shell.setText("Snippet 281");
	shell.setLayout(new FillLayout ());
	shell.addListener (SWT.Paint, e -> {
		GC gc = e.gc;
		Rectangle rect = shell.getClientArea ();
		Color color1 = new Color (display, 234, 246, 253);
		Color color2 = new Color (display, 217, 240, 252);
		Color color3 = new Color (display, 190, 230, 253);
		Color color4 = new Color (display, 167, 217, 245);
		Pattern p1 = new Pattern (display, 0, 0, 0, rect.height / 2, color1, color2);
		gc.setBackgroundPattern (p1);
		gc.fillRectangle (rect.x, rect.y, rect.width, rect.height / 2);
		Pattern p2 = new Pattern (display, 0, rect.height / 2, 0, rect.height, color3, color4);
		gc.setBackgroundPattern (p2);
		gc.fillRectangle (rect.x, rect.y + (rect.height / 2), rect.width, rect.height / 2 + 1);
		p1.dispose ();
		p2.dispose ();
		color1.dispose ();
		color2.dispose ();
		color3.dispose ();
		color4.dispose ();
	});
	shell.setSize (200, 64);
	shell.open ();
	while (!shell.isDisposed ()) {
		if (!display.readAndDispatch ())
			display.sleep ();
	}
	display.dispose ();
}

}