| /******************************************************************************* |
| * Copyright (c) 2000, 2014 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; |
| |
| /* |
| * Create a non-rectangular shell to simulate transparency |
| * (ESC to close shell) |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| * |
| * @since 3.0 |
| */ |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.events.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.widgets.*; |
| |
| public class Snippet180 { |
| |
| public static void main(String[] args) { |
| Display display = new Display(); |
| final Image image = display.getSystemImage(SWT.ICON_WARNING); |
| //Shell must be created with style SWT.NO_TRIM |
| final Shell shell = new Shell(display, SWT.NO_TRIM | SWT.ON_TOP); |
| shell.setBackground(display.getSystemColor(SWT.COLOR_RED)); |
| //define a region |
| Region region = new Region(); |
| Rectangle pixel = new Rectangle(0, 0, 1, 1); |
| for (int y = 0; y < 200; y+=2) { |
| for (int x = 0; x < 200; x+=2) { |
| pixel.x = x; |
| pixel.y = y; |
| region.add(pixel); |
| } |
| } |
| //define the shape of the shell using setRegion |
| shell.setRegion(region); |
| shell.addPaintListener(new PaintListener() { |
| @Override |
| public void paintControl(PaintEvent e) { |
| Rectangle bounds = image.getBounds(); |
| Point size = shell.getSize(); |
| e.gc.drawImage(image, 0, 0, bounds.width, bounds.height, 10, 10, size.x-20, size.y-20); |
| } |
| }); |
| shell.addListener(SWT.KeyDown, new Listener() { |
| @Override |
| public void handleEvent(Event e) { |
| if (e.character == SWT.ESC) { |
| shell.dispose(); |
| } |
| } |
| }); |
| shell.open(); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) |
| display.sleep(); |
| } |
| region.dispose(); |
| display.dispose(); |
| } |
| } |