Add support for GestureEvents to Sky

sky/engine/core/events/GestureEvent.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 #ifndef SKY_ENGINE_CORE_EVENTS_GESTUREEVENT_H_
 #define SKY_ENGINE_CORE_EVENTS_GESTUREEVENT_H_
 
 #include "sky/engine/core/events/EventDispatcher.h"
 #include "sky/engine/core/events/MouseRelatedEvent.h"
 #include "sky/engine/platform/PlatformGestureEvent.h"
 
 namespace blink {
 
+struct GestureEventInit : public UIEventInit {
+    int screenX = 0;
+    int screenY = 0;
+    int clientX = 0;
+    int clientY = 0;
+    bool ctrlKey = false;
+    bool altKey = false;
+    bool shiftKey = false;
+    bool metaKey = false;;
+    double deltaX = 0;
+    double deltaY = 0;
+    double velocityX = 0;
+    double velocityY = 0;
+};
+
 class GestureEvent final : public MouseRelatedEvent {
+    DEFINE_WRAPPERTYPEINFO();
 public:
     virtual ~GestureEvent() { }
 
+    static PassRefPtr<GestureEvent> create() { return adoptRef(new GestureEvent); }
     static PassRefPtr<GestureEvent> create(PassRefPtr<AbstractView>, const PlatformGestureEvent&);
+    static PassRefPtr<GestureEvent> create(const AtomicString& type, const GestureEventInit&);
 
-    virtual bool isGestureEvent() const override;
+    bool isGestureEvent() const override;
 
-    virtual const AtomicString& interfaceName() const override;
+    const AtomicString& interfaceName() const override;
 
     float deltaX() const { return m_deltaX; }
     float deltaY() const { return m_deltaY; }
 
+    float velocityX() const { return m_velocityX; }
+    float velocityY() const { return m_velocityY; }
+
 private:
     GestureEvent();
-    GestureEvent(const AtomicString& type, PassRefPtr<AbstractView>, int screenX, int screenY, int clientX, int clientY, bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, float deltaX, float deltaY);
+    GestureEvent(const AtomicString& type, const GestureEventInit&);
+    GestureEvent(const AtomicString& type, PassRefPtr<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);
 
     float m_deltaX;
     float m_deltaY;
+
+    float m_velocityX;
+    float m_velocityY;
 };
 
 class GestureEventDispatchMediator final : public EventDispatchMediator {
 public:
     static PassRefPtr<GestureEventDispatchMediator> create(PassRefPtr<GestureEvent> gestureEvent)
     {
         return adoptRef(new GestureEventDispatchMediator(gestureEvent));
     }
 
 private:
     explicit GestureEventDispatchMediator(PassRefPtr<GestureEvent>);
 
     GestureEvent* event() const;
 
     virtual bool dispatchEvent(EventDispatcher*) const override;
 };
 
 DEFINE_EVENT_TYPE_CASTS(GestureEvent);
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_EVENTS_GESTUREEVENT_H_