third_party/WebKit/Source/core/events/GestureEvent.h

   1 /*
   2  * Copyright (C) 2012 Google 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  *  * Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  *  * 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 THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef GestureEvent_h
  27 #define GestureEvent_h
  28
  29 #include "core/CoreExport.h"
  30 #include "core/events/EventDispatcher.h"
  31 #include "core/events/MouseRelatedEvent.h"
  32 #include "platform/PlatformGestureEvent.h"
  33
  34 namespace blink {
  35
  36 class CORE_EXPORT GestureEvent final : public MouseRelatedEvent {
  37 public:
  38     ~GestureEvent() override { }
  39
  40     static PassRefPtrWillBeRawPtr<GestureEvent> create(PassRefPtrWillBeRawPtr<AbstractView>, const PlatformGestureEvent&);
  41
  42     bool isGestureEvent() const override;
  43
  44     const AtomicString& interfaceName() const override;
  45
  46     float deltaX() const { return m_deltaX; }
  47     float deltaY() const { return m_deltaY; }
  48     float velocityX() const { return m_velocityX; }
  49     float velocityY() const { return m_velocityY; }
  50     bool inertial() const { return m_inertial; }
  51
  52     int resendingPluginId() const { return m_resendingPluginId; }
  53
  54     PassRefPtrWillBeRawPtr<EventDispatchMediator> createMediator() override;
  55
  56     DECLARE_VIRTUAL_TRACE();
  57
  58 private:
  59     GestureEvent();
  60     GestureEvent(const AtomicString& type, PassRefPtrWillBeRawPtr<AbstractView>, int screenX, int screenY, int clientX, int clientY, bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, float deltaX, float deltaY, float velocityX, float velocityY, bool inertial, double uiTimeStamp, int resendingPluginId);
  61
  62     float m_deltaX;
  63     float m_deltaY;
  64     float m_velocityX;
  65     float m_velocityY;
  66     bool m_inertial;
  67
  68     int m_resendingPluginId;
  69 };
  70
  71 class GestureEventDispatchMediator final : public EventDispatchMediator {
  72 public:
  73     static PassRefPtrWillBeRawPtr<GestureEventDispatchMediator> create(PassRefPtrWillBeRawPtr<GestureEvent> gestureEvent)
  74     {
  75         return adoptRefWillBeNoop(new GestureEventDispatchMediator(gestureEvent));
  76     }
  77
  78 private:
  79     explicit GestureEventDispatchMediator(PassRefPtrWillBeRawPtr<GestureEvent>);
  80
  81     GestureEvent& event() const;
  82
  83     bool dispatchEvent(EventDispatcher&) const override;
  84 };
  85
  86 DEFINE_EVENT_TYPE_CASTS(GestureEvent);
  87
  88 } // namespace blink
  89
  90 #endif // GestureEvent_h