StopWatch.h

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/*==============================================================================
Copyright 2010 Autodesk, Inc.  All rights reserved.

Use of this software is subject to the terms of the Autodesk license agreement provided
at the time of installation or download, or which otherwise accompanies this software
in either electronic or hard copy form.   

//**************************************************************************/
// DESCRIPTION: Classes To Watch Time Consumption For Max's Components
// AUTHOR: Golden Cheng created March 2010
//***************************************************************************/
#pragma once
#include <Windows.h>
#include "utilexp.h"
#include "MaxHeap.h"

namespace MaxSDK
{
    namespace Util
    {

        class StopWatch: public MaxHeapOperators
        {
        public:
            enum TimerState
            {
                PLAYING =0,
                PAUSED ,
                STOPPED 
            };
            UtilExport StopWatch();
            UtilExport void Start();
            UtilExport void Pause();
            UtilExport void Resume();
            UtilExport void Stop();
            UtilExport void Reset();
            UtilExport bool IsRunning() const;
            UtilExport bool IsPaused() const;
            UtilExport bool IsStopped() const;
            UtilExport TimerState GetTimerCurrentState() const;
            UtilExport double GetElapsedTime() const;
            UtilExport void GetLocalTime(SYSTEMTIME* time) const;

        private:
            void StartTicking();

            LARGE_INTEGER mStartTime;
            LARGE_INTEGER mFreq;
            double mElapsedTime;
            TimerState mTimerState;
        };

    }
}