Paul Davis
a73d15e989
git-svn-id: svn://localhost/ardour2/branches/3.0@5306 d708f5d6-7413-0410-9779-e7cbd77b26cf
332 lines
8.1 KiB
C++
332 lines
8.1 KiB
C++
// -*- c++ -*-
|
|
#ifndef _GLIBMM_VALUE_H
|
|
#define _GLIBMM_VALUE_H
|
|
/* $Id: value.h 292 2006-05-14 12:12:41Z murrayc $ */
|
|
|
|
/* Copyright 2002 The gtkmm Development Team
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the Free
|
|
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <glib-object.h>
|
|
#include <glibmm/refptr.h>
|
|
#include <glibmm/ustring.h>
|
|
|
|
|
|
namespace Glib
|
|
{
|
|
|
|
class ObjectBase;
|
|
class Object;
|
|
|
|
/** @defgroup glibmmValue Generic Values
|
|
*
|
|
* Glib::Value<> is specialized for almost any type used within
|
|
* the glibmm and gtkmm libraries.
|
|
*
|
|
* - Basic types like <tt>int</tt>, <tt>char</tt>, <tt>bool</tt>, etc., also <tt>void*</tt>.
|
|
* - Glib::ustring and std::string.
|
|
* - Pointers to classes derived from Glib::Object.
|
|
* - Glib::RefPtr<> pointer types, which are assumed to be Glib::Object pointers.
|
|
* - All flags and enum types used within the gtkmm libraries.
|
|
*
|
|
* If a type doesn't fit into any of these categories, then a generic
|
|
* implementation for custom types will be used. The requirements imposed
|
|
* on custom types are described in the Glib::Value class documentation.
|
|
*/
|
|
|
|
/**
|
|
* @ingroup glibmmValue
|
|
*/
|
|
class ValueBase
|
|
{
|
|
public:
|
|
/** Initializes the GValue, but without a type. You have to
|
|
* call init() before using the set(), get(), or reset() methods.
|
|
*/
|
|
ValueBase();
|
|
|
|
ValueBase(const ValueBase& other);
|
|
ValueBase& operator=(const ValueBase& other);
|
|
|
|
~ValueBase();
|
|
|
|
/** Setup the GValue for storing the specified @a type.
|
|
* The contents will be initialized to the default value for this type.
|
|
* Note that init() should never be called twice.
|
|
*
|
|
* init() is not implemented as constructor, to avoid the necessity
|
|
* to implement a forward constructor in each derived class.
|
|
*
|
|
* @param type The type that the Value should hold.
|
|
*/
|
|
void init(GType type);
|
|
|
|
/** Setup the GValue storing the type and value of the specified @a value.
|
|
* Note that init() should never be called twice.
|
|
*
|
|
* init() is not implemented as constructor, to avoid the necessity
|
|
* to implement a forward constructor in each derived class.
|
|
*
|
|
* @param value The existing GValue.
|
|
*/
|
|
void init(const GValue* value);
|
|
|
|
/** Reset contents to the default value of its type.
|
|
*/
|
|
void reset();
|
|
|
|
GValue* gobj() { return &gobject_; }
|
|
const GValue* gobj() const { return &gobject_; }
|
|
|
|
protected:
|
|
GValue gobject_;
|
|
};
|
|
|
|
/**
|
|
* @ingroup glibmmValue
|
|
*/
|
|
class ValueBase_Boxed : public ValueBase
|
|
{
|
|
public:
|
|
static GType value_type() G_GNUC_CONST;
|
|
|
|
#ifndef DOXYGEN_SHOULD_SKIP_THIS
|
|
GParamSpec* create_param_spec(const Glib::ustring& name) const;
|
|
#endif
|
|
|
|
protected:
|
|
void set_boxed(const void* data);
|
|
void* get_boxed() const; // doesn't copy
|
|
};
|
|
|
|
|
|
/**
|
|
* @ingroup glibmmValue
|
|
*/
|
|
class ValueBase_Object : public ValueBase
|
|
{
|
|
public:
|
|
static GType value_type() G_GNUC_CONST;
|
|
|
|
#ifndef DOXYGEN_SHOULD_SKIP_THIS
|
|
GParamSpec* create_param_spec(const Glib::ustring& name) const;
|
|
#endif
|
|
|
|
protected:
|
|
void set_object(Glib::ObjectBase* data);
|
|
Glib::ObjectBase* get_object() const;
|
|
Glib::RefPtr<Glib::ObjectBase> get_object_copy() const;
|
|
};
|
|
|
|
|
|
/**
|
|
* @ingroup glibmmValue
|
|
*/
|
|
class ValueBase_Enum : public ValueBase
|
|
{
|
|
public:
|
|
typedef gint CType;
|
|
static GType value_type() G_GNUC_CONST;
|
|
|
|
#ifndef DOXYGEN_SHOULD_SKIP_THIS
|
|
GParamSpec* create_param_spec(const Glib::ustring& name) const;
|
|
#endif
|
|
|
|
protected:
|
|
void set_enum(int data);
|
|
int get_enum() const;
|
|
};
|
|
|
|
|
|
/**
|
|
* @ingroup glibmmValue
|
|
*/
|
|
class ValueBase_Flags : public ValueBase
|
|
{
|
|
public:
|
|
typedef guint CType;
|
|
static GType value_type() G_GNUC_CONST;
|
|
|
|
#ifndef DOXYGEN_SHOULD_SKIP_THIS
|
|
GParamSpec* create_param_spec(const Glib::ustring& name) const;
|
|
#endif
|
|
|
|
protected:
|
|
void set_flags(unsigned int data);
|
|
unsigned int get_flags() const;
|
|
};
|
|
|
|
|
|
/**
|
|
* @ingroup glibmmValue
|
|
*/
|
|
class ValueBase_String : public ValueBase
|
|
{
|
|
public:
|
|
typedef const gchar* CType;
|
|
static GType value_type() G_GNUC_CONST;
|
|
|
|
#ifndef DOXYGEN_SHOULD_SKIP_THIS
|
|
GParamSpec* create_param_spec(const Glib::ustring& name) const;
|
|
#endif
|
|
|
|
protected:
|
|
void set_cstring(const char* data);
|
|
const char* get_cstring() const; // never returns 0
|
|
};
|
|
|
|
} // namespace Glib
|
|
|
|
|
|
/* Include generic Glib::Value<> template, before any specializations:
|
|
*/
|
|
#define _GLIBMM_VALUE_H_INCLUDE_VALUE_CUSTOM_H
|
|
#include <glibmm/value_custom.h>
|
|
#undef _GLIBMM_VALUE_H_INCLUDE_VALUE_CUSTOM_H
|
|
|
|
|
|
namespace Glib
|
|
{
|
|
|
|
/**
|
|
* @ingroup glibmmValue
|
|
*/
|
|
template <class T>
|
|
class Value_Boxed : public ValueBase_Boxed
|
|
{
|
|
public:
|
|
typedef T CppType;
|
|
typedef typename T::BaseObjectType* CType;
|
|
|
|
static GType value_type() { return T::get_type(); }
|
|
|
|
void set(const CppType& data) { set_boxed(data.gobj()); }
|
|
CppType get() const { return CppType(static_cast<CType>(get_boxed())); }
|
|
};
|
|
|
|
//More spec-compliant compilers (such as Tru64) need this to be near Glib::Object instead.
|
|
#ifdef GLIBMM_CAN_USE_DYNAMIC_CAST_IN_UNUSED_TEMPLATE_WITHOUT_DEFINITION
|
|
|
|
/** Partial specialization for RefPtr<> to Glib::Object.
|
|
* @ingroup glibmmValue
|
|
*/
|
|
template <class T>
|
|
class Value< Glib::RefPtr<T> > : public ValueBase_Object
|
|
{
|
|
public:
|
|
typedef Glib::RefPtr<T> CppType;
|
|
typedef typename T::BaseObjectType* CType;
|
|
|
|
static GType value_type() { return T::get_base_type(); }
|
|
|
|
void set(const CppType& data) { set_object(data.operator->()); }
|
|
CppType get() const { return Glib::RefPtr<T>::cast_dynamic(get_object_copy()); }
|
|
};
|
|
|
|
//The SUN Forte Compiler has a problem with this:
|
|
#ifdef GLIBMM_HAVE_DISAMBIGUOUS_CONST_TEMPLATE_SPECIALIZATIONS
|
|
|
|
/** Partial specialization for RefPtr<> to const Glib::Object.
|
|
* @ingroup glibmmValue
|
|
*/
|
|
template <class T>
|
|
class Value< Glib::RefPtr<const T> > : public ValueBase_Object
|
|
{
|
|
public:
|
|
typedef Glib::RefPtr<const T> CppType;
|
|
typedef typename T::BaseObjectType* CType;
|
|
|
|
static GType value_type() { return T::get_base_type(); }
|
|
|
|
void set(const CppType& data) { set_object(const_cast<T*>(data.operator->())); }
|
|
CppType get() const { return Glib::RefPtr<T>::cast_dynamic(get_object_copy()); }
|
|
};
|
|
#endif //GLIBMM_HAVE_DISAMBIGUOUS_CONST_TEMPLATE_SPECIALIZATIONS
|
|
|
|
#endif //GLIBMM_CAN_USE_DYNAMIC_CAST_IN_UNUSED_TEMPLATE_WITHOUT_DEFINITION
|
|
|
|
} // namespace Glib
|
|
|
|
|
|
/* Include generated specializations of Glib::Value<> for fundamental types:
|
|
*/
|
|
#define _GLIBMM_VALUE_H_INCLUDE_VALUE_BASICTYPES_H
|
|
#include <glibmm/value_basictypes.h>
|
|
#undef _GLIBMM_VALUE_H_INCLUDE_VALUE_BASICTYPES_H
|
|
|
|
|
|
namespace Glib
|
|
{
|
|
|
|
/** Specialization for strings.
|
|
* @ingroup glibmmValue
|
|
*/
|
|
template <>
|
|
class Value<std::string> : public ValueBase_String
|
|
{
|
|
public:
|
|
typedef std::string CppType;
|
|
|
|
void set(const std::string& data);
|
|
std::string get() const { return get_cstring(); }
|
|
};
|
|
|
|
/** Specialization for UTF-8 strings.
|
|
* @ingroup glibmmValue
|
|
*/
|
|
template <>
|
|
class Value<Glib::ustring> : public ValueBase_String
|
|
{
|
|
public:
|
|
typedef Glib::ustring CppType;
|
|
|
|
void set(const Glib::ustring& data);
|
|
Glib::ustring get() const { return get_cstring(); }
|
|
};
|
|
|
|
|
|
/** Base class of Glib::Value<T> specializations for enum types.
|
|
* @ingroup glibmmValue
|
|
*/
|
|
template <class T>
|
|
class Value_Enum : public ValueBase_Enum
|
|
{
|
|
public:
|
|
typedef T CppType;
|
|
|
|
void set(CppType data) { set_enum(data); }
|
|
CppType get() const { return CppType(get_enum()); }
|
|
};
|
|
|
|
/** Base class of Glib::Value<T> specializations for flags types.
|
|
* @ingroup glibmmValue
|
|
*/
|
|
template <class T>
|
|
class Value_Flags : public ValueBase_Flags
|
|
{
|
|
public:
|
|
typedef T CppType;
|
|
|
|
void set(CppType data) { set_flags(data); }
|
|
CppType get() const { return CppType(get_flags()); }
|
|
};
|
|
|
|
} // namespace Glib
|
|
|
|
|
|
#endif /* _GLIBMM_VALUE_H */
|
|
|