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[synfig.git] / synfig-core / trunk / src / synfig / distance.h

diff --git a/synfig-core/trunk/src/synfig/distance.h b/synfig-core/trunk/src/synfig/distance.h
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+++ b/synfig-core/trunk/src/synfig/distance.h
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+/* === S I N F G =========================================================== */
+/*!    \file distance.h
+**     \brief Template Header
+**
+**     $Id: distance.h,v 1.1.1.1 2005/01/04 01:23:14 darco Exp $
+**
+**     \legal
+**     Copyright (c) 2002 Robert B. Quattlebaum Jr.
+**
+**     This software and associated documentation
+**     are CONFIDENTIAL and PROPRIETARY property of
+**     the above-mentioned copyright holder.
+**
+**     You may not copy, print, publish, or in any
+**     other way distribute this software without
+**     a prior written agreement with
+**     the copyright holder.
+**     \endlegal
+*/
+/* ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __SINFG_DISTANCE_H
+#define __SINFG_DISTANCE_H
+
+/* === H E A D E R S ======================================================= */
+
+#include "real.h"
+#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 sinfg {
+
+class RendDesc;
+
+class Distance
+{
+public:
+       typedef Real value_type;
+       
+       enum System
+       {
+               SYSTEM_UNITS,           //!<
+               SYSTEM_PIXELS,          //!<
+               
+               SYSTEM_POINTS,          //!<
+               SYSTEM_INCHES,          //!<
+               SYSTEM_METERS,          //!<
+               SYSTEM_MILLIMETERS,     //!<
+               SYSTEM_CENTIMETERS,     //!<
+
+               SYSTEM_END                      //!< \internal
+       };
+
+       class BadSystem { };
+
+private:       
+       value_type value_;
+               
+       System system_;
+
+       
+public:
+
+       Distance(){ }
+       Distance(const value_type& value, System system):value_(value),system_(system) { }
+       explicit Distance(const sinfg::String& string);
+       
+       operator Real()const { return value_; }
+
+       Distance& operator=(const Real& rhs) { value_=rhs; return *this; }
+
+       Distance& operator=(const sinfg::String& rhs);
+
+       sinfg::String get_string(int digits=4)const;
+       
+       const System& get_system()const { return system_; }
+
+       const Real& get()const { return value_; }
+
+       Real get(System system, const RendDesc& rend_desc)const;
+       
+       void convert(System system, const RendDesc& rend_desc);
+       
+       Real meters()const;
+       Real meters(const RendDesc& rend_desc)const;
+       Real units(const RendDesc& rend_desc)const;
+       
+       static Real meters_to_system(Real x, System target_system);
+       static System ident_system(const sinfg::String& str);
+       static sinfg::String system_name(System system);
+       static sinfg::String system_local_name(System system);
+
+       const Distance& operator+=(const Distance &rhs) { value_+=meters_to_system(rhs.meters(),system_); return *this; }
+       const Distance& operator-=(const Distance &rhs) { value_-=meters_to_system(rhs.meters(),system_); return *this; }
+
+       const Distance& operator+=(const float &rhs) { value_+=rhs; return *this; }
+       const Distance& operator-=(const float &rhs) { value_-=rhs; return *this; }
+       const Distance& operator*=(const float &rhs) { value_*=rhs; return *this; }
+       const Distance& operator/=(const float &rhs) { value_/=rhs; return *this; }
+       
+/*
+       template<typename U> const Time& operator+=(const U &rhs) { value_+=rhs; return *this; }
+       template<typename U> const Time& operator-=(const U &rhs) { value_-=rhs; return *this; }
+       template<typename U> const Time& operator*=(const U &rhs) { value_*=rhs; return *this; }
+       template<typename U> const Time& operator/=(const U &rhs) { value_/=rhs; return *this; }
+
+       template<typename U> Time operator+(const U &rhs)const { return value_+rhs; }
+       template<typename U> Time operator-(const U &rhs)const { return value_-rhs; }
+       template<typename U> Time operator*(const U &rhs)const { return value_*rhs; }
+       template<typename U> Time operator/(const U &rhs)const { return value_/rhs; }
+       
+       Time operator-()const { return -value_; }
+*/
+}; // END of class Distance
+       
+}; // END of namespace sinfg
+
+/* === E N D =============================================================== */
+
+#endif