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     virtual ~GestureEvent() { }
  39
  40     static PassRefPtrWillBeRawPtr<GestureEvent> create(PassRefPtrWillBeRawPtr<AbstractView>, const PlatformGestureEvent&);
  41
  42     virtual bool isGestureEvent() const override;
  43
  44     virtual const AtomicString& interfaceName() const override;
  45
  46     float deltaX() const { return m_deltaX; }
  47     float deltaY() const { return m_deltaY; }
  48
  49     DECLARE_VIRTUAL_TRACE();
  50
  51 private:
  52     GestureEvent();
  53     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, double uiTimeStamp);
  54
  55     float m_deltaX;
  56     float m_deltaY;
  57 };
  58
  59 class GestureEventDispatchMediator final : public EventDispatchMediator {
  60 public:
  61     static PassRefPtrWillBeRawPtr<GestureEventDispatchMediator> create(PassRefPtrWillBeRawPtr<GestureEvent> gestureEvent)
  62     {
  63         return adoptRefWillBeNoop(new GestureEventDispatchMediator(gestureEvent));
  64     }
  65
  66 private:
  67     explicit GestureEventDispatchMediator(PassRefPtrWillBeRawPtr<GestureEvent>);
  68
  69     GestureEvent& event() const;
  70
  71     virtual bool dispatchEvent(EventDispatcher&) const override;
  72 };
  73
  74 DEFINE_EVENT_TYPE_CASTS(GestureEvent);
  75
  76 } // namespace blink
  77
  78 #endif // GestureEvent_h