1 /*
   2  * Copyright (c) 2011, 2018, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #include "config.h"
  27 
  28 #include "PlatformWheelEvent.h"
  29 
  30 namespace WebCore {
  31 
  32 PlatformWheelEvent::PlatformWheelEvent(
  33     const IntPoint& pos,
  34     const IntPoint& globalPos,
  35     float deltaX,
  36     float deltaY,
  37     bool shiftKey,
  38     bool ctrlKey,
  39     bool altKey,
  40     bool metaKey)
  41         : PlatformEvent(
  42         PlatformEvent::Wheel,
  43         shiftKey,
  44         ctrlKey,
  45         altKey,
  46         metaKey,
  47                 WallTime {})
  48         , m_position(pos)
  49         , m_globalPosition(globalPos)
  50       // For some unknown reason, EventHandler expects deltaX/deltaY < 0 for
  51       // ScrollRight/ScrollDown, and deltaX/deltaY > 0 for ScrollLeft/ScrollUp.
  52       // Java mouse wheel events behave in reverse way, so need a negation here.
  53         , m_deltaX(-deltaX)
  54         , m_deltaY(-deltaY)
  55         , m_wheelTicksX(-deltaX)
  56         , m_wheelTicksY(-deltaY)
  57         , m_granularity(ScrollByPixelWheelEvent)
  58         , m_directionInvertedFromDevice(false)
  59 {
  60 }
  61 
  62 } // namespace WebCore