1 /*
   2  * Copyright (c) 1998, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 import java.awt.Button;
  24 import java.awt.Frame;
  25 import java.awt.Rectangle;
  26 import java.awt.Robot;
  27 import jdk.testlibrary.OSInfo;
  28 
  29 /*
  30  * @test 1.2 98/08/05
  31  * @bug 4373478 8079255
  32  * @summary Test mouse wheel functionality of Robot
  33  * @author bchristi: area=Robot
  34  * @library ../../../../lib/testlibrary
  35  * @build jdk.testlibrary.OSInfo
  36  * @run main RobotWheelTest
  37  */
  38 public class RobotWheelTest {
  39 
  40     private static final int NUMTESTS = 20;
  41     private static volatile int wheelRotation;
  42 
  43     public static void main(String[] args) throws Exception {
  44 
  45         Frame frame = null;
  46         try {
  47             int wheelSign = OSInfo.getOSType().equals(OSInfo.OSType.MACOSX) ? -1 : 1;
  48 
  49             frame = new Frame();
  50             frame.setSize(200, 200);
  51             Button button = new Button("WheelButton");
  52             button.addMouseWheelListener(e -> wheelRotation = e.getWheelRotation());
  53             frame.add(button);
  54             frame.setVisible(true);
  55 
  56             Robot robot = new Robot();
  57             robot.setAutoDelay(100);
  58             robot.waitForIdle();
  59 
  60             Rectangle bounds = frame.getBounds();
  61             int centerX = bounds.x + bounds.width / 2;
  62             int centerY = bounds.y + bounds.height / 2;
  63             robot.mouseMove(centerX, centerY);
  64             robot.waitForIdle();
  65 
  66             for (int i = -NUMTESTS; i <= NUMTESTS; i++) {
  67                 if (i == 0) {
  68                     continue;
  69                 }
  70                 robot.mouseWheel(i);
  71                 robot.waitForIdle();
  72                 if (i != wheelSign * wheelRotation) {
  73                     throw new RuntimeException("wheelRotation = " + wheelRotation
  74                             + ", expected value = " + i);
  75                 }
  76             }
  77         } finally {
  78             if (frame != null) {
  79                 frame.dispose();
  80             }
  81         }
  82     }
  83 }