time.h

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/* === S Y N F I G ========================================================= */
/* ========================================================================= */

/* === S T A R T =========================================================== */

#ifndef __SYNFIG_TIME_H
#define __SYNFIG_TIME_H

/* === H E A D E R S ======================================================= */

#include "string.h"

/* === M A C R O S ========================================================= */

/* === T Y P E D E F S ===================================================== */

/* === C L A S S E S & S T R U C T S ======================================= */

namespace synfig {

class Time
{
public:
    typedef double value_type;

    enum Format
    {
        FORMAT_NORMAL=0,        
        FORMAT_NOSPACES=(1<<0), 
        FORMAT_FULL=(1<<1),     
        FORMAT_VIDEO=(1<<2),    
        FORMAT_FRAMES=(1<<3),   

        FORMAT_END=(1<<4)       
    }; // END of enum Format

private:
    value_type value_;

    static value_type epsilon_() { return static_cast<value_type>(0.0005); }

public:
    Time(): value_() { }

    Time(const value_type &x):value_(x) { }

    Time(int x):value_(x) { }

    Time(int hour, int minute, float second):value_(static_cast<value_type>(second+hour*3600+minute*60)) { }


    Time(const String &string, float fps=0);

    static const Time begin() { return static_cast<synfig::Time>(-32767.0f*512.0f); }

    static const Time end() { return static_cast<synfig::Time>(32767.0f*512.0f); }

    static const Time zero() { return static_cast<synfig::Time>(0); }

    static const Time epsilon() { return static_cast<synfig::Time>(epsilon_()); }


    String get_string(float fps=0, Time::Format format=FORMAT_NORMAL)const;

#ifdef _DEBUG
    const char *c_str()const;
#endif

    bool is_valid()const;

    Time round(float fps)const;

    bool is_equal(const Time& rhs)const { return (value_>rhs.value_)?value_-rhs.value_<=epsilon_():rhs.value_-value_<=epsilon_(); }
    bool is_less_than(const Time& rhs)const { return rhs.value_-value_ > epsilon_(); }
    bool is_more_than(const Time& rhs)const { return value_-rhs.value_ > epsilon_(); }

    operator double()const { return value_; }

    template<typename U> bool operator<(const U& rhs)const { return value_<rhs; }
    template<typename U> bool operator>(const U& rhs)const { return value_>rhs; }
    template<typename U> bool operator<=(const U& rhs)const { return value_<=rhs; }
    template<typename U> bool operator>=(const U& rhs)const { return value_>=rhs; }
    template<typename U> bool operator==(const U& rhs)const { return value_==rhs; }
    template<typename U> bool operator!=(const U& rhs)const { return value_!=rhs; }

#if 0
    bool operator<(const Time& rhs)const { return value_<rhs.value_; }
    bool operator>(const Time& rhs)const { return value_>rhs.value_; }
    bool operator<=(const Time& rhs)const { return value_<=rhs.value_; }
    bool operator>=(const Time& rhs)const { return value_>=rhs.value_; }
    bool operator==(const Time& rhs)const { return value_==rhs.value_; }
    bool operator!=(const Time& rhs)const { return value_!=rhs.value_; }
#else
    bool operator<(const Time& rhs)const { return is_less_than(rhs); }
    bool operator>(const Time& rhs)const { return is_more_than(rhs); }
    bool operator<=(const Time& rhs)const { return is_less_than(rhs)||is_equal(rhs); }
    bool operator>=(const Time& rhs)const { return is_more_than(rhs)||is_equal(rhs); }
    bool operator==(const Time& rhs)const { return is_equal(rhs); }
    bool operator!=(const Time& rhs)const { return !is_equal(rhs); }
#endif

    template<typename U> const Time& operator+=(const U &rhs) { value_+=static_cast<value_type>(rhs); return *this; }
    template<typename U> const Time& operator-=(const U &rhs) { value_-=static_cast<value_type>(rhs); return *this; }
    template<typename U> const Time& operator*=(const U &rhs) { value_*=static_cast<value_type>(rhs); return *this; }
    template<typename U> const Time& operator/=(const U &rhs) { value_/=static_cast<value_type>(rhs); return *this; }

    template<typename U> Time operator+(const U &rhs)const { return value_+static_cast<value_type>(rhs); }
    template<typename U> Time operator-(const U &rhs)const { return value_-static_cast<value_type>(rhs); }
    template<typename U> Time operator*(const U &rhs)const { return value_*static_cast<value_type>(rhs); }
    template<typename U> Time operator/(const U &rhs)const { return value_/static_cast<value_type>(rhs); }

    Time operator-()const { return -value_; }
}; // END of class Time


inline Time::Format operator|(Time::Format lhs, Time::Format rhs)
{ return static_cast<Time::Format>((int)lhs|(int)rhs); }


inline bool operator<=(Time::Format lhs, Time::Format rhs)
{ return (static_cast<int>(lhs) & static_cast<int>(rhs))==static_cast<int>(rhs); }

}; // END of namespace synfig

/* === E N D =============================================================== */

#endif