org.eclipse.swt.snippets.Snippet62.java Source code

Introduction

Here is the source code for org.eclipse.swt.snippets.Snippet62.java

Source

/*******************************************************************************
 * Copyright (c) 2000, 2016 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * Control example snippet: print mouse state and button (down, move, up)
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 *
 * @since 3.1
 */
import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;

public class Snippet62 {

    static String stateMask(int stateMask) {
        String string = "";
        if ((stateMask & SWT.CTRL) != 0)
            string += " CTRL";
        if ((stateMask & SWT.ALT) != 0)
            string += " ALT";
        if ((stateMask & SWT.SHIFT) != 0)
            string += " SHIFT";
        if ((stateMask & SWT.COMMAND) != 0)
            string += " COMMAND";
        return string;
    }

    public static void main(String[] args) {
        Display display = new Display();
        final Shell shell = new Shell(display);
        shell.setText("Snippet 62");
        Listener listener = e -> {
            String string = "Unknown";
            switch (e.type) {
            case SWT.MouseDown:
                string = "DOWN";
                break;
            case SWT.MouseMove:
                string = "MOVE";
                break;
            case SWT.MouseUp:
                string = "UP";
                break;
            }
            string += ": button: " + e.button + ", ";
            string += "stateMask=0x" + Integer.toHexString(e.stateMask) + stateMask(e.stateMask) + ", x=" + e.x
                    + ", y=" + e.y;
            if ((e.stateMask & SWT.BUTTON1) != 0)
                string += " BUTTON1";
            if ((e.stateMask & SWT.BUTTON2) != 0)
                string += " BUTTON2";
            if ((e.stateMask & SWT.BUTTON3) != 0)
                string += " BUTTON3";
            if ((e.stateMask & SWT.BUTTON4) != 0)
                string += " BUTTON4";
            if ((e.stateMask & SWT.BUTTON5) != 0)
                string += " BUTTON5";
            System.out.println(string);
        };
        shell.addListener(SWT.MouseDown, listener);
        shell.addListener(SWT.MouseMove, listener);
        shell.addListener(SWT.MouseUp, listener);
        shell.pack();
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}