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      1 /*
      2  * Copyright (C) 2011 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
     14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
     17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     23  * THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef PlatformEvent_h
     27 #define PlatformEvent_h
     28 
     29 namespace WebCore {
     30 
     31 class PlatformEvent {
     32 public:
     33     enum Type {
     34         NoType = 0,
     35 
     36         // PlatformKeyboardEvent
     37         KeyDown,
     38         KeyUp,
     39         RawKeyDown,
     40         Char,
     41 
     42         // PlatformMouseEvent
     43         MouseMoved,
     44         MousePressed,
     45         MouseReleased,
     46         MouseScroll,
     47 
     48         // PlatformWheelEvent
     49         Wheel,
     50 
     51         // PlatformGestureEvent
     52         GestureScrollBegin,
     53         GestureScrollEnd,
     54         GestureScrollUpdate,
     55         GestureScrollUpdateWithoutPropagation,
     56         GestureTap,
     57         GestureTapUnconfirmed,
     58         GestureTapDown,
     59         GestureTapDownCancel,
     60         GestureTwoFingerTap,
     61         GestureLongPress,
     62         GestureLongTap,
     63         GesturePinchBegin,
     64         GesturePinchEnd,
     65         GesturePinchUpdate,
     66 
     67         // PlatformTouchEvent
     68         TouchStart,
     69         TouchMove,
     70         TouchEnd,
     71         TouchCancel,
     72     };
     73 
     74     enum Modifiers {
     75         AltKey      = 1 << 0,
     76         CtrlKey     = 1 << 1,
     77         MetaKey     = 1 << 2,
     78         ShiftKey    = 1 << 3,
     79     };
     80 
     81     Type type() const { return static_cast<Type>(m_type); }
     82 
     83     bool shiftKey() const { return m_modifiers & ShiftKey; }
     84     bool ctrlKey() const { return m_modifiers & CtrlKey; }
     85     bool altKey() const { return m_modifiers & AltKey; }
     86     bool metaKey() const { return m_modifiers & MetaKey; }
     87 
     88     unsigned modifiers() const { return m_modifiers; }
     89 
     90     double timestamp() const { return m_timestamp; }
     91 
     92 protected:
     93     PlatformEvent()
     94         : m_type(NoType)
     95         , m_modifiers(0)
     96         , m_timestamp(0)
     97     {
     98     }
     99 
    100     explicit PlatformEvent(Type type)
    101         : m_type(type)
    102         , m_modifiers(0)
    103         , m_timestamp(0)
    104     {
    105     }
    106 
    107     PlatformEvent(Type type, Modifiers modifiers, double timestamp)
    108         : m_type(type)
    109         , m_modifiers(modifiers)
    110         , m_timestamp(timestamp)
    111     {
    112     }
    113 
    114     PlatformEvent(Type type, bool shiftKey, bool ctrlKey, bool altKey, bool metaKey, double timestamp)
    115         : m_type(type)
    116         , m_modifiers(0)
    117         , m_timestamp(timestamp)
    118     {
    119         if (shiftKey)
    120             m_modifiers |= ShiftKey;
    121         if (ctrlKey)
    122             m_modifiers |= CtrlKey;
    123         if (altKey)
    124             m_modifiers |= AltKey;
    125         if (metaKey)
    126             m_modifiers |= MetaKey;
    127     }
    128 
    129     // Explicit protected destructor so that people don't accidentally
    130     // delete a PlatformEvent.
    131     ~PlatformEvent()
    132     {
    133     }
    134 
    135     unsigned m_type;
    136     unsigned m_modifiers;
    137     double m_timestamp;
    138 };
    139 
    140 } // namespace WebCore
    141 
    142 #endif // PlatformEvent_h
    143