| /******************************************************************************* |
| * Copyright (c) 2000, 2013 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; |
| |
| /* |
| * GC example snippet: implement a simple scribble program |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| */ |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.widgets.*; |
| |
| public class Snippet66 { |
| |
| public static void main (String [] args) { |
| Display display = new Display (); |
| final Shell shell = new Shell (display); |
| Listener listener = new Listener () { |
| int lastX = 0, lastY = 0; |
| @Override |
| public void handleEvent (Event event) { |
| switch (event.type) { |
| case SWT.MouseMove: |
| if ((event.stateMask & SWT.BUTTON1) == 0) break; |
| GC gc = new GC (shell); |
| gc.drawLine (lastX, lastY, event.x, event.y); |
| gc.dispose (); |
| //FALL THROUGH |
| case SWT.MouseDown: |
| lastX = event.x; |
| lastY = event.y; |
| break; |
| } |
| } |
| }; |
| shell.addListener (SWT.MouseDown, listener); |
| shell.addListener (SWT.MouseMove, listener); |
| shell.open (); |
| while (!shell.isDisposed ()) { |
| if (!display.readAndDispatch ()) display.sleep (); |
| } |
| display.dispose (); |
| } |
| } |