1 /*
   2  * Copyright (c) 2014, 2016, 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 
  24 import java.awt.Frame;
  25 import java.awt.Panel;
  26 import java.awt.event.MouseWheelEvent;
  27 import javax.swing.SwingUtilities;
  28 
  29 /**
  30  * @test
  31  * @key headful
  32  * @bug 8049533
  33  * @summary SwingUtilities.convertMouseEvent misses
  34  *      MouseWheelEvent.preciseWheelRotation
  35  * @run main bug8049533
  36  */
  37 public class bug8049533 {
  38 
  39     private static final double PRECISE_WHEEL_ROTATION = 3.14;
  40 
  41     public static void main(String[] args) {
  42         Frame frame = new Frame();
  43         Panel panel = new Panel();
  44         frame.add(panel);
  45 
  46         MouseWheelEvent event = new MouseWheelEvent(panel,
  47                 0, 0, 0, 0, 0, 0, 0, 0, false, 0, 0,
  48                 2, // wheelRotation
  49                 PRECISE_WHEEL_ROTATION); // preciseWheelRotation
  50 
  51         MouseWheelEvent convertedEvent = (MouseWheelEvent) SwingUtilities.
  52                 convertMouseEvent(event.getComponent(), event, null);
  53 
  54         if (convertedEvent.getPreciseWheelRotation() != PRECISE_WHEEL_ROTATION) {
  55             throw new RuntimeException("PreciseWheelRotation field is not copied!");
  56         }
  57     }
  58 }