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Java example source code file (ExtraButtonDrag.java)

This example Java source code file (ExtraButtonDrag.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

awt, button, event, extrabuttondrag, frame, illegalargumentexception, mouseadapter, point, robot, runtimeexception, string, test, wtoolkit

The ExtraButtonDrag.java Java example source code

/*
 * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
  @test %I% %E%
  @bug 6315717
  @summary verifies that drag events are coming for every button if the property is set to true
  @author Andrei Dmitriev : area=awt.mouse
  @run main ExtraButtonDrag
 */

//events from standard should also come

import java.awt.*;
import java.awt.event.*;

public class ExtraButtonDrag extends Frame {
    static String tk = Toolkit.getDefaultToolkit().getClass().getName();
    static Robot robot;
    static int [] buttonsPressed;
    static int [] buttonsReleased;
    static int [] buttonsClicked;
    volatile static boolean dragged = false;
    volatile static boolean moved = false;

    public ExtraButtonDrag(){
        super("ExtraButtonDrag");
    }

    public static void main(String []s){
        Frame frame = new ExtraButtonDrag();

        MouseAdapter ma = new MouseAdapter() {
                public void mouseDragged(MouseEvent e) {
                    System.out.println("Dragged "+e);// +" : "+ e.getButton() + " : " +e.getButtonState(e.getButton()));
                    dragged = true;
                }
                public void mouseMoved(MouseEvent e) {
                    System.out.println("Moved "+e);
                    moved = true;
                }
                public void mousePressed(MouseEvent e) {
                    System.out.println(">>> "+e);
                }
                public void mouseReleased(MouseEvent e) {
                    System.out.println(">>> "+e);
                }

            };

        frame.addMouseMotionListener(ma);
        frame.addMouseListener(ma);

        frame.setSize(300, 300);
        frame.setVisible(true);

        int [] buttonMask = new int [MouseInfo.getNumberOfButtons()]; //InputEvent.getButtonMasks();

        for (int i = 0; i < MouseInfo.getNumberOfButtons(); i++){
            buttonMask[i] = InputEvent.getMaskForButton(i+1);
            //            System.out.println("TEST: "+tmp[i]);
        }

        try {
            robot = new Robot();
            robot.delay(1000);
            Point centerFrame = new Point(frame.getLocationOnScreen().x + frame.getWidth()/2, frame.getLocationOnScreen().y + frame.getHeight()/2);
            Point outboundsFrame = new Point(frame.getLocationOnScreen().x + frame.getWidth()*3/2, frame.getLocationOnScreen().y + frame.getHeight()/2);

            System.out.println("areExtraMouseButtonsEnabled() == " + Toolkit.getDefaultToolkit().areExtraMouseButtonsEnabled() );

            for (int i = 0; i < MouseInfo.getNumberOfButtons(); i++){
                System.out.println("button to drag = " +(i+1) + " : value passed to robot = " +buttonMask[i]);

                try {
                    dragMouse(buttonMask[i], centerFrame.x, centerFrame.y, outboundsFrame.x, outboundsFrame.y);
                } catch (IllegalArgumentException e){
                    throw new RuntimeException("Test failed. Exception occured.", e);
                }

                robot.delay(500);
                //this is a choice-case for X protocol issue: native events from extra buttons doesn't contain
                // the correct state so it's unable to decide if there is a drag or move. By default we send MOVED event.
                //XToolkit: extra buttons should report MOVED events only
                //WToolkit: extra buttons should report DRAGGED events only
                if (i > 2){ //extra buttons only
                    if (tk.equals("sun.awt.X11.XToolkit") || tk.equals("sun.awt.motif.MToolkit")) {
                        if (!moved || dragged) {
                            throw new RuntimeException("Test failed."+ tk +" Button = " +(i+1) + " moved = "+moved +" : dragged = " +dragged);
                        }
                    } else { //WToolkit
                        if (moved || !dragged) {
                            throw new RuntimeException("Test failed."+ tk +" Button = " +(i+1) + " moved = "+moved +" : dragged = " +dragged);
                        }
                    }
                } else {
                    if (moved || !dragged){
                        throw new RuntimeException("Test failed. Button = " +(i+1) + " not dragged.");
                    }
                }
            }
        } catch (Exception e){
            throw new RuntimeException("", e);
        }
    }

    public static void dragMouse(int button, int x0, int y0, int x1, int y1){
        int curX = x0;
        int curY = y0;
        int dx = x0 < x1 ? 1 : -1;
        int dy = y0 < y1 ? 1 : -1;
        robot.mouseMove(x0, y0);

        robot.delay(200);
        dragged = false;
        moved = false;

        robot.mousePress(button);

        while (curX != x1){
            curX += dx;
            robot.mouseMove(curX, curY);
            robot.delay(5);
        }
        while (curY != y1 ){
            curY += dy;
            robot.mouseMove(curX, curY);
            robot.delay(5);
        }
        robot.mouseRelease(button);
    }

}

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