snippet280.java

Eclipse JAVA开发软件中SWT各控件范例源码

/*******************************************************************************
 * Copyright (c) 2000, 2007 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
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * draw a multi-gradient (without advanced graphics)
 * 
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class Snippet280 {

public static void main (String [] args) {
	final Display display = new Display ();
	final Shell shell = new Shell (display, SWT.SHELL_TRIM | SWT.NO_BACKGROUND);
	shell.setLayout(new FillLayout ());
	shell.addListener (SWT.Paint, new Listener () {
		public void handleEvent (Event 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);
			gc.setForeground(color1);
			gc.setBackground(color2);
			gc.fillGradientRectangle (rect.x, rect.y, rect.width, rect.height / 2, true);
			color1.dispose ();
			color2.dispose ();
			Color color3 = new Color (display, 190, 230, 253);
			Color color4 = new Color (display, 167, 217, 245);
			gc.setForeground(color3);
			gc.setBackground(color4);
			gc.fillGradientRectangle (rect.x, rect.y + (rect.height / 2), rect.width, rect.height / 2 + 1, true);
			color3.dispose ();
			color4.dispose ();
			
		}
	});
	shell.setSize (200, 64);
	shell.open ();
	while (!shell.isDisposed ()) {
		if (!display.readAndDispatch ())
			display.sleep ();
	}
	display.dispose ();
}

}