Mega Code Archive
Implement a simple scribble program
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/*******************************************************************************
* Copyright (c) 2000, 2004 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.SWT;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
public class ScribbleProgram {
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;
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();
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();
}
}
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