| /******************************************************************************* |
| * 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.examples.graphics; |
| |
| /* |
| * Drawing with transformations, paths and alpha blending |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| */ |
| import java.io.*; |
| import java.util.*; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.widgets.*; |
| |
| public class AdvancedGraphics { |
| |
| private static final ResourceBundle RESOURCE_BUNDLE = ResourceBundle.getBundle("examples_graphics"); |
| |
| static Image loadImage (Device device, Class clazz, String string) { |
| InputStream stream = clazz.getResourceAsStream (string); |
| if (stream == null) return null; |
| Image image = null; |
| try { |
| image = new Image (device, stream); |
| } catch (SWTException ex) { |
| } finally { |
| try { |
| stream.close (); |
| } catch (IOException ex) {} |
| } |
| return image; |
| } |
| |
| public Shell open(final Display display) { |
| final Shell shell = new Shell(display); |
| shell.setText(RESOURCE_BUNDLE.getString("AdvancedGraphics")); //$NON-NLS-1$ |
| try { |
| Path path = new Path(display); |
| path.dispose(); |
| } catch (SWTException e) { |
| MessageBox dialog = new MessageBox(shell, SWT.ICON_WARNING | SWT.OK); |
| dialog.setText(RESOURCE_BUNDLE.getString("Warning")); //$NON-NLS-1$ |
| dialog.setMessage(RESOURCE_BUNDLE.getString("LibNotFound")); //$NON-NLS-1$ |
| dialog.open(); |
| shell.dispose(); |
| return null; |
| } |
| FontData fd = shell.getFont().getFontData()[0]; |
| final Font font = new Font(display, fd.getName(), 96, SWT.BOLD | SWT.ITALIC); |
| final Image image = loadImage(display, AdvancedGraphics.class, "irmaos.jpg"); |
| final Rectangle rect = image.getBounds(); |
| shell.addListener(SWT.Paint, new Listener() { |
| public void handleEvent(Event event) { |
| GC gc = event.gc; |
| Transform tr = new Transform(display); |
| tr.translate(rect.width / 4, rect.height / 2); |
| tr.rotate(-30); |
| if (image != null) { |
| gc.drawImage(image, 0, 0, rect.width, rect.height, 0, 0, rect.width, rect.height); |
| } |
| gc.setAlpha(100); |
| gc.setTransform(tr); |
| Path path = new Path(display); |
| path.addString("SWT", 0, 0, font); |
| gc.setBackground(display.getSystemColor(SWT.COLOR_GREEN)); |
| gc.setForeground(display.getSystemColor(SWT.COLOR_BLUE)); |
| gc.fillPath(path); |
| gc.drawPath(path); |
| tr.dispose(); |
| path.dispose(); |
| } |
| }); |
| shell.setSize(shell.computeSize(rect.width, rect.height)); |
| shell.open(); |
| shell.addListener(SWT.Dispose, new Listener() { |
| public void handleEvent(Event event) { |
| if (image != null) image.dispose(); |
| font.dispose(); |
| } |
| }); |
| return shell; |
| } |
| |
| public static void main(String[] args) { |
| Display display = new Display(); |
| Shell shell = new AdvancedGraphics().open(display); |
| while (shell != null && !shell.isDisposed()) { |
| if (!display.readAndDispatch()) |
| display.sleep(); |
| } |
| display.dispose(); |
| } |
| } |