TouchScreenTapGesture.h

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

#pragma once

#include "AppInterface.h"
#include "WindowsInput.h"

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

                IWindowsInputHandler* m_pTapHandler;

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

            public:
                TouchScreenTapGesture(IWindowsInputHandler* pTapHandler);

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

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