glibmm  2.76.0
Public Types | Static Public Member Functions | List of all members
Glib::ArrayHandler< T, Tr > Class Template Reference

A utility for converting between std::vector and plain C arrays. More...

#include <glibmm/vectorutils.h>

Public Types

using CType = typename Tr::CType
 
using CppType = T
 
using VectorType = std::vector< CppType >
 
using ArrayKeeperType = typename Glib::Container_Helpers::ArrayKeeper< Tr >
 
using ArrayIteratorType = typename Glib::Container_Helpers::ArrayIterator< Tr >
 

Static Public Member Functions

static VectorType array_to_vector (const CType * array, std::size_t array_size, Glib::OwnershipType ownership)
 
static VectorType array_to_vector (const CType * array, Glib::OwnershipType ownership)
 
static ArrayKeeperType vector_to_array (const VectorType & vector)
 

Detailed Description

template<typename T, typename Tr = Glib::Container_Helpers::TypeTraits<T>>
class Glib::ArrayHandler< T, Tr >

A utility for converting between std::vector and plain C arrays.

This would normally only be used by glibmm or gtkmm itself, or similar libraries that wrap C APIs.

For instance:

std::vector<Glib::ustring> PixbufFormat::get_mime_types() const
{
return
Glib::ArrayHandler<Glib::ustring>::array_to_vector(gdk_pixbuf_format_get_mime_types(const_cast<GdkPixbufFormat*>(gobj())),
}
static VectorType array_to_vector(const CType *array, std::size_t array_size, Glib::OwnershipType ownership)
@ OWNERSHIP_DEEP
Definition: containerhandle_shared.h:53

or

void Display::store_clipboard(const Glib::RefPtr<Gdk::Window>& clipboard_window, guint32 time_,
{
if (!targets.size ())
{
gdk_display_store_clipboard(gobj(),
Glib::unwrap (clipboard_window),
time_,
AtomUstringTraits>::vector_to_array(targets).data (),
targets.size ());
}
}
size_type size() const noexcept
A utility for converting between std::vector and plain C arrays.
Definition: vectorutils.h:467
static ArrayKeeperType vector_to_array(const VectorType &vector)
Glib::ustring has much the same interface as std::string, but contains Unicode characters encoded as ...
Definition: ustring.h:322
T::BaseObjectType * unwrap(T *ptr)
Get the underlying C instance from the C++ instance.
Definition: wrap.h:124

Note that usage below is wrong - data() returns a pointer to data owned by a temporary ArrayKeeper returned by vector_to_array(), which is destroyed at the end of this instruction. For details, see Glib::ArrayKeeper.

const char** array = Glib::ArrayHandler<Glib::ustring>::vector_to_array(vec).data ();

Member Typedef Documentation

◆ ArrayIteratorType

template <typename T , typename Tr = Glib::Container_Helpers::TypeTraits<T>>
using Glib::ArrayHandler< T, Tr >::ArrayIteratorType = typename Glib::Container_Helpers::ArrayIterator<Tr>

◆ ArrayKeeperType

template <typename T , typename Tr = Glib::Container_Helpers::TypeTraits<T>>
using Glib::ArrayHandler< T, Tr >::ArrayKeeperType = typename Glib::Container_Helpers::ArrayKeeper<Tr>

◆ CppType

template <typename T , typename Tr = Glib::Container_Helpers::TypeTraits<T>>
using Glib::ArrayHandler< T, Tr >::CppType = T

◆ CType

template <typename T , typename Tr = Glib::Container_Helpers::TypeTraits<T>>
using Glib::ArrayHandler< T, Tr >::CType = typename Tr::CType

◆ VectorType

template <typename T , typename Tr = Glib::Container_Helpers::TypeTraits<T>>
using Glib::ArrayHandler< T, Tr >::VectorType = std::vector<CppType>

Member Function Documentation

◆ array_to_vector() [1/2]

template <typename T , typename Tr = Glib::Container_Helpers::TypeTraits<T>>
static VectorType Glib::ArrayHandler< T, Tr >::array_to_vector ( const CType array,
Glib::OwnershipType  ownership 
)
static

◆ array_to_vector() [2/2]

template <typename T , typename Tr = Glib::Container_Helpers::TypeTraits<T>>
static VectorType Glib::ArrayHandler< T, Tr >::array_to_vector ( const CType array,
std::size_t  array_size,
Glib::OwnershipType  ownership 
)
static

◆ vector_to_array()

template <typename T , typename Tr = Glib::Container_Helpers::TypeTraits<T>>
static ArrayKeeperType Glib::ArrayHandler< T, Tr >::vector_to_array ( const VectorType vector)
static