Gdk::DragSurface Class Reference

Interface for drag surface surfaces. More...

#include <gdkmm/dragsurface.h>

Inheritance diagram for Gdk::DragSurface:

Public Member Functions
	DragSurface (DragSurface &&src) noexcept
DragSurface &	operator= (DragSurface &&src) noexcept
	~DragSurface () noexcept override
GdkDragSurface *	gobj ()
	Provides access to the underlying C GObject.
const GdkDragSurface *	gobj () const
	Provides access to the underlying C GObject.
bool	present (int width, int height)
	Present drag_surface.
Glib::SignalProxy< void(DragSurfaceSize &)>	signal_compute_size ()
Public Member Functions inherited from Glib::Interface
	Interface ()
	Interface (Interface &&src) noexcept
Interface &	operator= (Interface &&src) noexcept
	Interface (const Glib::Interface_Class &interface_class)
	Interface (GObject *castitem)
	~Interface () noexcept override
	Interface (const Interface &)=delete
Interface &	operator= (const Interface &)=delete
GObject *	gobj ()
const GObject *	gobj () const
Public Member Functions inherited from Glib::ObjectBase
	ObjectBase (const ObjectBase &)=delete
ObjectBase &	operator= (const ObjectBase &)=delete
void	set_property_value (const Glib::ustring &property_name, const Glib::ValueBase &value)
void	get_property_value (const Glib::ustring &property_name, Glib::ValueBase &value) const
void	set_property (const Glib::ustring &property_name, const PropertyType &value)
void	get_property (const Glib::ustring &property_name, PropertyType &value) const
PropertyType	get_property (const Glib::ustring &property_name) const
sigc::connection	connect_property_changed (const Glib::ustring &property_name, const sigc::slot< void()> &slot)
sigc::connection	connect_property_changed (const Glib::ustring &property_name, sigc::slot< void()> &&slot)
void	freeze_notify ()
void	thaw_notify ()
virtual void	reference () const
virtual void	unreference () const
GObject *	gobj ()
const GObject *	gobj () const
GObject *	gobj_copy () const
Public Member Functions inherited from sigc::trackable
	trackable () noexcept
	trackable (const trackable &src) noexcept
	trackable (trackable &&src) noexcept
	~trackable ()
void	add_destroy_notify_callback (notifiable *data, func_destroy_notify func) const
void	notify_callbacks ()
trackable &	operator= (const trackable &src)
trackable &	operator= (trackable &&src) noexcept
void	remove_destroy_notify_callback (notifiable *data) const

Static Public Member Functions
static void	add_interface (GType gtype_implementer)
static GType	get_type ()
	Get the GType for this class, for use with the underlying GObject type system.

Protected Member Functions
	DragSurface ()
	You should derive from this class to use it.
Protected Member Functions inherited from Glib::ObjectBase
	ObjectBase ()
	ObjectBase (const char *custom_type_name)
	ObjectBase (const std::type_info &custom_type_info)
	ObjectBase (ObjectBase &&src) noexcept
ObjectBase &	operator= (ObjectBase &&src) noexcept
virtual	~ObjectBase () noexcept=0
void	initialize (GObject *castitem)
void	initialize_move (GObject *castitem, Glib::ObjectBase *previous_wrapper)

Related Symbols
(Note that these are not member symbols.)
Glib::RefPtr< Gdk::DragSurface >	wrap (GdkDragSurface *object, bool take_copy=false)
	A Glib::wrap() method for this object.

Additional Inherited Members
Public Types inherited from sigc::trackable
typedef internal::func_destroy_notify	func_destroy_notify
Public Types inherited from sigc::notifiable
typedef internal::func_destroy_notify	func_destroy_notify

Detailed Description

Interface for drag surface surfaces.

A Gdk::DragSurface is a surface that is used during a DnD operation.

Since gtkmm 3.98:

Constructor & Destructor Documentation

DragSurface() [1/2]

Gdk::DragSurface::DragSurface ( )

protected

You should derive from this class to use it.

DragSurface() [2/2]

Gdk::DragSurface::DragSurface ( DragSurface &&  src )

noexcept

~DragSurface()

Gdk::DragSurface::~DragSurface ( )

overridenoexcept

Member Function Documentation

add_interface()

static void Gdk::DragSurface::add_interface ( GType  gtype_implementer )

static

get_type()

static GType Gdk::DragSurface::get_type ( )

static

Get the GType for this class, for use with the underlying GObject type system.

gobj() [1/2]

GdkDragSurface * Gdk::DragSurface::gobj ( )

inline

Provides access to the underlying C GObject.

gobj() [2/2]

const GdkDragSurface * Gdk::DragSurface::gobj ( ) const

inline

Provides access to the underlying C GObject.

operator=()

DragSurface & Gdk::DragSurface::operator= ( DragSurface &&  src )

noexcept

present()

bool Gdk::DragSurface::present	(	int	width,
		int	height
	)

Present drag_surface.

Parameters

width	The unconstrained drag_surface width to layout.
height	The unconstrained drag_surface height to layout.

Returns

false if it failed to be presented, otherwise true.

signal_compute_size()

Glib::SignalProxy< void(DragSurfaceSize &)> Gdk::DragSurface::signal_compute_size

(

)

Slot Prototype:

void on_my_compute_size(DragSurfaceSize& size)

Flags: Run Last

Emitted when the size for the surface needs to be computed, when it is present.

This signal will normally be emitted during the native surface layout cycle when the surface size needs to be recomputed.

It is the responsibility of the drag surface user to handle this signal and compute the desired size of the surface, storing the computed size in the Gdk::DragSurfaceSize object that is passed to the signal handler, using Gdk::DragSurfaceSize::set_size().

Failing to set a size so will result in an arbitrary size being used as a result.

Since gtkmm 4.12:

Parameters

size	The size of the drag surface.

Friends And Related Symbol Documentation

wrap()

Glib::RefPtr< Gdk::DragSurface > wrap ( GdkDragSurface *  object, bool  take_copy = false  )

related

A Glib::wrap() method for this object.

Parameters

object	The C instance.
take_copy	False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns

A C++ instance that wraps this C instance.