--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file value.h
+** \brief Template Header
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**
+** This package is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License as
+** published by the Free Software Foundation; either version 2 of
+** the License, or (at your option) any later version.
+**
+** This package is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+** General Public License for more details.
+** \endlegal
+*/
+/* ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __SYNFIG_VALUE_H
+#define __SYNFIG_VALUE_H
+
+/* === H E A D E R S ======================================================= */
+
+//#include "vector.h"
+//#include "time.h"
+#include "segment.h"
+//#include "color.h"
+#include "string.h"
+#include <list>
+#include <vector>
+#include <ETL/trivial>
+#include <ETL/handle>
+#include "general.h"
+//#include "gradient.h"
+#include "blinepoint.h"
+#include "exception.h"
+
+#ifdef USE_HALF_TYPE
+#include <OpenEXR/half.h>
+#endif
+
+#ifndef SYNFIG_NO_ANGLE
+#include "angle.h"
+#endif
+
+#include <ETL/ref_count>
+
+/* === 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 Canvas;
+class Vector;
+class Time;
+class Segment;
+class Gradient;
+class BLinePoint;
+class Color;
+
+/*! \class ValueBase
+** \todo writeme
+*/
+class ValueBase
+{
+ /*
+ -- ** -- T Y P E S -----------------------------------------------------------
+ */
+
+public:
+
+ //! \writeme
+ enum Type
+ {
+ TYPE_NIL=0, //!< Represents an empty value
+
+ TYPE_BOOL,
+ TYPE_INTEGER,
+ TYPE_ANGLE, //!< Angle
+
+ // All types after this point are larger than 32 bits
+
+ TYPE_TIME, //!< Time
+ TYPE_REAL, //!< Real
+
+ // All types after this point are larger than 64 bits
+
+ TYPE_VECTOR, //!< Vector
+ TYPE_COLOR, //!< Color
+ TYPE_SEGMENT, //!< Segment
+ TYPE_BLINEPOINT, //!< BLinePoint
+
+ // All types after this point require construction/destruction
+
+ TYPE_LIST, //!< List
+ TYPE_CANVAS, //!< Canvas
+ TYPE_STRING, //!< String
+ TYPE_GRADIENT, //!< Color Gradient
+
+ TYPE_END //!< Not a valid type, used for sanity checks
+ };
+
+private:
+
+ typedef std::vector<ValueBase> list_type;
+
+ /*
+ -- ** -- D A T A -------------------------------------------------------------
+ */
+
+protected:
+
+ Type type;
+ void *data;
+ etl::reference_counter ref_count;
+ bool loop_;
+
+ /*
+ -- ** -- C O N S T R U C T O R S -----------------------------------
+ */
+
+public:
+
+ //! \writeme
+ ValueBase();
+
+ //! \writeme
+ template <typename T>
+ ValueBase(const T &x, bool loop_=false):
+ type(TYPE_NIL),data(0),ref_count(0),loop_(loop_)
+ { set(x); }
+
+ //! \writeme
+ ValueBase(Type x);
+
+ //! \writeme
+ ~ValueBase();
+
+ /*
+ -- ** -- O P E R A T O R S ---------------------------------------------------
+ */
+
+public:
+
+ //! \writeme
+ template <class T> ValueBase& operator=(const T& x)
+ { set(x); return *this; }
+
+ //! \writeme
+ ValueBase& operator=(const ValueBase& x);
+
+ //! \writeme
+ bool operator==(const ValueBase& rhs)const;
+
+ //! \writeme
+ bool operator!=(const ValueBase& rhs)const { return !operator==(rhs); }
+
+ //! Constant index operator for when value is of type TYPE_LIST
+ const ValueBase &operator[](int index)const
+ { assert(type==TYPE_LIST); assert(index>0); return get_list()[index]; }
+
+ /*
+ -- ** -- M E M B E R F U N C T I O N S -------------------------------------
+ */
+
+public:
+
+ //! \writeme
+ void clear();
+
+ //! \writeme
+ bool get_loop()const { return loop_; }
+
+ //! \writeme
+ void set_loop(bool x) { loop_=x; }
+
+ //! \writeme
+ bool empty()const;
+
+ //! \writeme
+ Type get_contained_type()const;
+
+ //! Returns true if the contained value is defined and valid.
+ bool is_valid()const;
+
+ //! Returns a string containing the name of the type
+ String type_name()const { return type_name(type); }
+
+ //! Returns the type of the contained value
+ const Type & get_type()const { return type; }
+
+ //! Checks the type of the parameter against itself. Returns true if they are of the same type.
+ template <class T> bool
+ same_as(const T &x)const
+ {
+ const Type testtype(get_type(x));
+
+ if(testtype==type)return true;
+ if( (type==TYPE_REAL || type==TYPE_TIME) &&
+ (testtype==TYPE_REAL || testtype==TYPE_TIME) )
+ return true;
+ return false;
+ }
+
+
+ // === GET MEMBERS ========================================================
+ template <typename T>
+ const T &get(const T& x)const
+ {
+ assert(is_valid() && same_as(x));
+ return *static_cast<const T*>(data);
+ }
+ float get(const float &)const { return get(Real()); }
+ etl::loose_handle<Canvas> get(const etl::handle<Canvas>&)const
+ { return get(etl::loose_handle<Canvas>()); }
+ etl::loose_handle<Canvas> get(Canvas*)const
+ { return get(etl::loose_handle<Canvas>()); }
+ const char* get(const char*)const;
+ const list_type& get_list()const { return get(list_type()); }
+ // ========================================================================
+
+
+
+ // === PUT MEMBERS ========================================================
+ template <typename T>
+ void put(T* x)const
+ {
+ assert(same_as(*x));
+ *x=*static_cast<const T*>(data);
+ }
+ void put(float* x)const { *x=get(Real()); }
+ void put(char** x)const;
+ // ========================================================================
+
+
+
+ // === SET MEMBERS ========================================================
+ template <typename T> void set(const T& x) { _set(x); }
+ void set(const float &x) { _set(Real(x)); }
+ void set(const list_type &x);
+ void set(const char* x);
+ void set(Canvas*x);
+ void set(etl::loose_handle<Canvas> x);
+ void set(etl::handle<Canvas> x);
+ template <class T> void set(const std::vector<T> &x)
+ { _set(list_type(x.begin(),x.end())); }
+ template <class T> void set(const std::list<T> &x)
+ { _set(list_type(x.begin(),x.end())); }
+ // ========================================================================
+
+
+ /*
+ -- ** -- S T A T I C F U N C T I O N S -------------------------------------
+ */
+
+public:
+
+ //! Returns a string containing the name of the given Type
+ static String type_name(Type id);
+
+ //! Returns a the corresponding Type of the described type
+ static Type ident_type(const String &str);
+
+
+ // === GET TYPE MEMBERS ===================================================
+ static const Type get_type(bool) { return TYPE_BOOL; }
+ static const Type get_type(int) { return TYPE_INTEGER; }
+ static const Type get_type(const Time&) { return TYPE_TIME; }
+ static const Type get_type(const Real&) { return TYPE_REAL; }
+ static const Type get_type(const float&) { return TYPE_REAL; }
+ static const Type get_type(const Vector&) { return TYPE_VECTOR; }
+ static const Type get_type(const Color&) { return TYPE_COLOR; }
+ static const Type get_type(const Segment&) { return TYPE_SEGMENT; }
+ static const Type get_type(const BLinePoint&) { return TYPE_BLINEPOINT; }
+ static const Type get_type(const String&) { return TYPE_STRING; }
+ static const Type get_type(const Gradient&) { return TYPE_GRADIENT; }
+ static const Type get_type(Canvas*) { return TYPE_CANVAS; }
+ static const Type get_type(const etl::handle<Canvas>&)
+ { return TYPE_CANVAS; }
+ static const Type get_type(const etl::loose_handle<Canvas>&)
+ { return TYPE_CANVAS; }
+ static const Type get_type(const list_type&) { return TYPE_LIST; }
+ template <class T> static const Type get_type(const std::vector<T> &x)
+ { return TYPE_LIST; }
+ template <class T> static const Type get_type(const std::list<T> &x)
+ { return TYPE_LIST; }
+ // ========================================================================
+
+
+ /*
+ -- ** -- C A S T O P E R A T O R S -----------------------------------------
+ */
+
+public:
+
+ operator const list_type&()const { return get_list(); }
+ //operator const Color&()const { return get(Color()); }
+ //operator const Real&()const { return get(Real()); }
+ //operator const Time&()const { return get(Time()); }
+
+ operator const Vector&()const { return get(Vector()); }
+ operator const BLinePoint&()const { return get(BLinePoint()); }
+ //operator const int&()const { return get(int()); }
+ //operator const String&()const { return get(String()); }
+ //operator const char *()const { return get(String()).c_str(); }
+ operator const Segment&()const { return get(Segment()); }
+
+
+ /*
+ -- ** -- O T H E R -----------------------------------------------------------
+ */
+
+public:
+
+#ifdef USE_HALF_TYPE
+ half get(const half &)const { return get(Real()); }
+ void put(half*x)const { *x=get(Real()); }
+ void set(const half &x) { _set(Real(x)); }
+ static const Type get_type(const half&) { return TYPE_REAL; }
+ operator half()const { return get(Real()); }
+#endif
+
+#ifndef SYNFIG_NO_ANGLE
+ operator const Angle&()const { return get(Angle()); }
+ static const Type get_type(const Angle&) { return TYPE_ANGLE; }
+#endif
+
+ template <class T>
+ operator std::list<T>()const
+ {
+ assert(type==TYPE_LIST);
+ std::list<T> ret(get_list().begin(),get_list().end());
+ return ret;
+ }
+ template <class T>
+ operator std::vector<T>()const
+ {
+ assert(type==TYPE_LIST);
+ std::vector<T> ret(get_list().begin(),get_list().end());
+ return ret;
+ }
+
+
+private:
+
+ template <typename T> void
+ _set(const T& x)
+ {
+ const Type newtype(get_type(x));
+
+ assert(newtype!=TYPE_NIL);
+
+ if(newtype==type)
+ {
+ if(ref_count.unique())
+ {
+ *reinterpret_cast<T*>(data)=x;
+ return;
+ }
+ }
+
+ clear();
+
+ type=newtype;
+ ref_count.reset();
+ data=new T(x);
+ }
+}; // END of class ValueBase
+
+
+/*! \class Value
+** \todo writeme
+*/
+template <class T>
+class Value : public ValueBase
+{
+public:
+ Value(const T &x):ValueBase(x)
+ {
+ }
+
+ Value(const ValueBase &x):ValueBase(x)
+ {
+ if(!x.same_as(T()))
+ throw Exception::BadType("Value<T>(ValueBase): Type Mismatch");
+ }
+
+ Value()
+ {
+ }
+
+ T get()const { return ValueBase::get(T()); }
+
+ void put(T* x)const { ValueBase::put(x); }
+
+ void set(const T& x) { ValueBase::operator=(x); }
+
+ Value<T>& operator=(const T& x) { set(x); return *this; }
+
+ Value<T>& operator=(const Value<T>& x) { return ValueBase::operator=(x); }
+
+ Value<T>& operator=(const ValueBase& x)
+ {
+ if(!x.same_as(T()))
+ throw Exception::BadType("Value<T>(ValueBase): Type Mismatch");
+ return ValueBase::operator=(x);
+ }
+
+}; // END of class Value
+
+/*
+template <>
+class Value< std::list<CT> > : public ValueBase
+{
+public:
+ Value(const T &x):ValueBase(x)
+ {
+ }
+ Value(const ValueBase &x):ValueBase(x)
+ {
+ if(!x.same_as(T()))
+ throw Exception::BadType("Value<T>(ValueBase): Type Mismatch");
+ }
+ Value()
+ {
+ }
+
+ T get()const { return ValueBase::get(T()); }
+
+ void put(T* x)const { ValueBase::put(x); }
+
+ void set(const T& x) { ValueBase::operator=(x); }
+
+ Value<T>& operator=(const T& x) { set(x); return *this; }
+
+ Value<T>& operator=(const Value<T>& x) { return ValueBase::operator=(x); }
+
+ Value<T>& operator=(const ValueBase& x)
+ {
+ if(!x.same_as(T()))
+ throw Exception::BadType("Value<T>(ValueBase): Type Mismatch");
+ return ValueBase::operator=(x);
+ }
+
+}; // END of class Value
+*/
+
+}; // END of namespace synfig
+
+/* === E N D =============================================================== */
+
+#endif
projects / synfig.git / blobdiff