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# distance.h

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    00001 /* === S Y N F I G ========================================================= */
    00021 /* ========================================================================= */
    00022
    00023 /* === S T A R T =========================================================== */
    00024
    00025 #ifndef __SYNFIG_DISTANCE_H
    00026 #define __SYNFIG_DISTANCE_H
    00027
    00028 /* === H E A D E R S ======================================================= */
    00029
    00030 #include "real.h"
    00031 #include "string.h"
    00032
    00033 /* === M A C R O S ========================================================= */
    00034
    00035 /* === T Y P E D E F S ===================================================== */
    00036
    00037 /* === C L A S S E S & S T R U C T S ======================================= */
    00038
    00039 namespace synfig {
    00040
    00041 class RendDesc;
    00042
    00043 class Distance
    00044 {
    00045 public:
    00046     typedef Real value_type;
    00047
    00048     enum System
    00049     {
    00050         SYSTEM_UNITS,
    00051         SYSTEM_PIXELS,
    00052
    00053         SYSTEM_POINTS,
    00054         SYSTEM_INCHES,
    00055         SYSTEM_METERS,
    00056         SYSTEM_MILLIMETERS,
    00057         SYSTEM_CENTIMETERS,
    00058
    00059         SYSTEM_END
    00060     };
    00061
    00062     class BadSystem { };
    00063
    00064 private:
    00065     value_type value_;
    00066
    00067     System system_;
    00068
    00069
    00070 public:
    00071
    00072     Distance(){ }
    00073     Distance(const value_type& value, System system):value_(value),system_(system) { }
    00074     explicit Distance(const synfig::String& string);
    00075
    00076     operator Real()const { return value_; }
    00077
    00078     Distance& operator=(const Real& rhs) { value_=rhs; return *this; }
    00079
    00080     Distance& operator=(const synfig::String& rhs);
    00081
    00082     synfig::String get_string(int digits=4)const;
    00083
    00084     const System& get_system()const { return system_; }
    00085
    00086     const Real& get()const { return value_; }
    00087
    00088     Real get(System system, const RendDesc& rend_desc)const;
    00089
    00090     void convert(System system, const RendDesc& rend_desc);
    00091
    00092     Real meters()const;
    00093     Real meters(const RendDesc& rend_desc)const;
    00094     Real units(const RendDesc& rend_desc)const;
    00095
    00096     static Real meters_to_system(Real x, System target_system);
    00097     static System ident_system(const synfig::String& str);
    00098     static synfig::String system_name(System system);
    00099     static synfig::String system_local_name(System system);
    00100
    00101     const Distance& operator+=(const Distance &rhs) { value_+=meters_to_system(rhs.meters(),system_); return *this; }
    00102     const Distance& operator-=(const Distance &rhs) { value_-=meters_to_system(rhs.meters(),system_); return *this; }
    00103
    00104     const Distance& operator+=(const float &rhs) { value_+=rhs; return *this; }
    00105     const Distance& operator-=(const float &rhs) { value_-=rhs; return *this; }
    00106     const Distance& operator*=(const float &rhs) { value_*=rhs; return *this; }
    00107     const Distance& operator/=(const float &rhs) { value_/=rhs; return *this; }
    00108
    00109 /*
    00110     template<typename U> const Time& operator+=(const U &rhs) { value_+=rhs; return *this; }
    00111     template<typename U> const Time& operator-=(const U &rhs) { value_-=rhs; return *this; }
    00112     template<typename U> const Time& operator*=(const U &rhs) { value_*=rhs; return *this; }
    00113     template<typename U> const Time& operator/=(const U &rhs) { value_/=rhs; return *this; }
    00114
    00115     template<typename U> Time operator+(const U &rhs)const { return value_+rhs; }
    00116     template<typename U> Time operator-(const U &rhs)const { return value_-rhs; }
    00117     template<typename U> Time operator*(const U &rhs)const { return value_*rhs; }
    00118     template<typename U> Time operator/(const U &rhs)const { return value_/rhs; }
    00119
    00120     Time operator-()const { return -value_; }
    00121 */
    00122 }; // END of class Distance
    00123
    00124 }; // END of namespace synfig
    00125
    00126 /* === E N D =============================================================== */
    00127
    00128 #endif