PanGesture.h

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

#pragma once

#include "AppInterface.h"
#include "VectorMath.h"
#include "IEmscriptenInputHandler.h"
#include "InputEvents.h"
#include <vector>

namespace Eegeo
{
    namespace Emscripten
    {
        namespace Input
        {
            class PanGesture
            {
            private:
                IEmscriptenInputHandler* m_pHandler;
                bool m_panButtonDown;
                bool m_panning;
                v2 m_anchor;
                v2 m_current;
                float m_majorScreenDimension;
                const float m_panStartThresholdPixels;

                AppInterface::PanData PopulatePanData() const;
            public:
                PanGesture(IEmscriptenInputHandler* pHandler, const float screenWidth, const float screenHeight, const float panStartThresholdPixels);

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

                void NotifyScreenPropertiesChanged(int screenWidth, int screenHeight);
            };
        }
    }
}