| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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; |
| |
| /* |
| * Control example snippet: set a background image |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| * |
| * @since 3.2 |
| */ |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.layout.*; |
| import org.eclipse.swt.widgets.*; |
| |
| public class Snippet214 { |
| static Image oldImage; |
| public static void main(String [] args) { |
| final Display display = new Display (); |
| final Shell shell = new Shell (display); |
| shell.setBackgroundMode (SWT.INHERIT_DEFAULT); |
| FillLayout layout1 = new FillLayout (SWT.VERTICAL); |
| layout1.marginWidth = layout1.marginHeight = 10; |
| shell.setLayout (layout1); |
| Group group = new Group (shell, SWT.NONE); |
| group.setText ("Group "); |
| RowLayout layout2 = new RowLayout (SWT.VERTICAL); |
| layout2.marginWidth = layout2.marginHeight = layout2.spacing = 10; |
| group.setLayout (layout2); |
| for (int i=0; i<8; i++) { |
| Button button = new Button (group, SWT.RADIO); |
| button.setText ("Button " + i); |
| } |
| shell.addListener (SWT.Resize, new Listener () { |
| public void handleEvent (Event event) { |
| Rectangle rect = shell.getClientArea (); |
| Image newImage = new Image (display, Math.max (1, rect.width), 1); |
| GC gc = new GC (newImage); |
| gc.setForeground (display.getSystemColor (SWT.COLOR_WHITE)); |
| gc.setBackground (display.getSystemColor (SWT.COLOR_BLUE)); |
| gc.fillGradientRectangle (rect.x, rect.y, rect.width, 1, false); |
| gc.dispose (); |
| shell.setBackgroundImage (newImage); |
| if (oldImage != null) oldImage.dispose (); |
| oldImage = newImage; |
| } |
| }); |
| shell.pack (); |
| shell.open (); |
| while (!shell.isDisposed ()) { |
| if (!display.readAndDispatch ()) display.sleep (); |
| } |
| if (oldImage != null) oldImage.dispose (); |
| display.dispose (); |
| } |
| } |