XOR.java Source code

Introduction

Here is the source code for XOR.java

Source

/******************************************************************************
 * All Right Reserved. 
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * 
 * Created on 2004-4-19 15:31:18 by JACK
 * $Id$
 * 
 *****************************************************************************/

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class XOR {
    Display display = new Display();
    Shell shell = new Shell(display);

    public XOR() {
        shell.setLayout(new FillLayout());
        final Canvas canvas = new Canvas(shell, SWT.NULL);
        canvas.setBackground(display.getSystemColor(SWT.COLOR_WHITE));

        canvas.addPaintListener(new PaintListener() {
            public void paintControl(PaintEvent e) {
                e.gc.setXORMode(true);

                e.gc.setBackground(display.getSystemColor(SWT.COLOR_GREEN));
                e.gc.fillOval(60, 10, 100, 100); // Top 

                e.gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
                e.gc.fillOval(10, 60, 120, 120); // left bottom      

                e.gc.setBackground(display.getSystemColor(SWT.COLOR_BLUE));
                e.gc.fillOval(110, 60, 100, 100); // right bottom      

            }
        });

        shell.setSize(300, 220);
        shell.open();
        //textUser.forceFocus();

        // Set up the event loop.
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                // If no more entries in event queue
                display.sleep();
            }
        }

        display.dispose();
    }

    private void init() {

    }

    public static void main(String[] args) {
        new XOR();
    }
}