KeyState.h

Go to the documentation of this file.

#pragma once

#include "swCommonLib/Common/TypesDefinitions.h"

#include <assert.h>




namespace sw {
namespace input
{



class KeyState
{
    enum KeyStateFlag : int8
    {
        Pressed = 0x1,
        DownEvent = 0x2,
        UpEvent = 0x4
    };

private:

    int8            m_state;

public:

    explicit        KeyState()
        : m_state( 0 )
    {}

    inline bool     IsPressed       () const { return ( m_state & Pressed ) != 0; }
    inline bool     IsUp            () const { return !IsPressed(); }

    inline bool     IsKeyDownEvent  () const { return ( m_state & DownEvent ) != 0; }
    inline bool     IsKeyUpEvent    () const { return ( m_state & UpEvent ) != 0; }

    inline operator void*           ( ) const { return (void*)IsPressed(); }

    inline void     operator=		( KeyState newState )
    {
        m_state = newState.m_state;
    }

public:
    inline void     Press       () { m_state = Pressed | DownEvent; }   
    inline void     UnPress     () { m_state = UpEvent; }               
    inline void     HoldState   () { m_state = m_state & Pressed; } 

    inline void     operator=	( bool newState )
    {
        if( !IsPressed() && newState )
            Press();
        else if( IsPressed() && !newState )
            UnPress();
        else
            HoldState();
    }
};


}   // input
}   // sw