TapGesture.h

// Copyright eeGeo Ltd (2012-2014), All Rights Reserved

#pragma once

#include "AppInterface.h"
#include "IEmscriptenInputHandler.h"
#include "InputEvents.h"

namespace Eegeo
{
    namespace Emscripten
    {
        namespace Input
        {
            class TapGesture
            {
            private:
                int m_tapDownCount;
                int m_tapUpCount;
                int m_currentPointerTrackingStack;
                float m_tapAnchorX;
                float m_tapAnchorY;
                long long m_tapUnixTime;

                IEmscriptenInputHandler* m_pTapHandler;

                void DispatchSingleTap();
                void DispatchDoubleTap(const MouseInputEvent& event);
                bool WithinAnchorDeadzone(const MouseInputEvent& event) const;
                bool IsTapping() const;
                void Reset();
                void TrackPointerDown();
                void TrackPointerUp();
                bool NoPointerDown() const;

            public:
                TapGesture(IEmscriptenInputHandler* pTapHandler);

                void PointerDown(const MouseInputEvent& event);
                void PointerUp(const MouseInputEvent& event);
                void PointerMove(const MouseInputEvent& event);

                void Update(float deltaSeconds);
            };
        }
    }
}