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package org.eclipse.swt.snippets;
/*******************************************************************************
* 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
*******************************************************************************/
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
/*
* 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
*/
public class Snippet214 {
static Image oldImage;
public static void main(String [] args) {
final Display display = new Display ();
final Shell shell = new Shell (display);
/*
* TEMPORARY CODE - this may change for 3.2
* Note: setBackgroundMode() must be called
* before any child is created
*/
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 ();
}
}
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