wayland::callback_t Class Reference

callback object More...

#include <wayland-client-protocol.hpp>

Inheritance diagram for wayland::callback_t:

Collaboration diagram for wayland::callback_t:

Public Types
enum	wrapper_type { wrapper_type::standard, wrapper_type::display, wrapper_type::foreign, wrapper_type::proxy_wrapper }

Public Member Functions
std::function< void(uint32_t)> &	on_done ()
	done event More...
uint32_t	get_id () const
	Get the id of a proxy object. More...
std::string	get_class () const
	Get the interface name (class) of a proxy object. More...
uint32_t	get_version () const
	Get the protocol object version of a proxy object. More...
wrapper_type	get_wrapper_type () const
	Get the type of a proxy object. More...
void	set_queue (event_queue_t queue)
	Assign a proxy to an event queue. More...
wl_proxy *	c_ptr () const
	Get a pointer to the underlying C struct. More...
bool	proxy_has_object () const
	Check whether this wrapper actually wraps an object. More...
	operator bool () const
	Check whether this wrapper actually wraps an object. More...
bool	operator== (const proxy_t &right) const
	Check whether two wrappers refer to the same object. More...
bool	operator!= (const proxy_t &right) const
	Check whether two wrappers refer to different objects. More...
void	proxy_release ()
	Release the wrapped object (if any), making this an empty wrapper. More...

Detailed Description

callback object

Clients can handle the 'done' event to get notified when the related request is done.

Examples

egl.cpp, and shm.cpp.

Definition at line 210 of file wayland-client-protocol.hpp.

Member Enumeration Documentation

wrapper_type

enum wayland::proxy_t::wrapper_type

stronginherited

Underlying wl_proxy type and properties of a proxy_t that affect construction, destruction, and event handling

Enumerator
standard	C pointer is a standard type compatible with wl_proxy*. Events are dispatched and it is destructed when the proxy_t is destructed. User data is set.
display	C pointer is a wl_display*. No events are dispatched, wl_display_disconnect is called when the proxy_t is destructed. User data is set.
foreign	C pointer is a standard type compatible with wl_proxy*, but another library owns it and it should not be touched in a way that could affect the operation of the other library. No events are dispatched, wl_proxy_destroy is not called when the proxy_t is destructed, user data is not touched. Consequently, there is no reference counting for the proxy_t. Lifetime of such wrappers should preferably be short to minimize the chance that the owning library decides to destroy the wl_proxy.
proxy_wrapper	C pointer is a wl_proxy* that was constructed with wl_proxy_create_wrapper. No events are dispatched, wl_proxy_wrapper_destroy is called when the proxy_t is destroyed. Reference counting is active. A reference to the proxy_t creating this proxy wrapper is held to extend its lifetime until after the proxy wrapper is destroyed.

Definition at line 105 of file wayland-client.hpp.

Member Function Documentation

c_ptr()

wl_proxy* wayland::proxy_t::c_ptr ( ) const

inherited

Get a pointer to the underlying C struct.

Returns

The underlying wl_proxy wrapped by this proxy_t if it exists, otherwise an exception is thrown

get_class()

std::string wayland::proxy_t::get_class ( ) const

inherited

Get the interface name (class) of a proxy object.

Returns

The interface name of the object associated with the proxy

get_id()

uint32_t wayland::proxy_t::get_id ( ) const

inherited

Get the id of a proxy object.

Returns

The id the object associated with the proxy

Examples

dump.cpp.

get_version()

uint32_t wayland::proxy_t::get_version ( ) const

inherited

Get the protocol object version of a proxy object.

Gets the protocol object version of a proxy object, or 0 if the proxy was created with unversioned API.

A returned value of 0 means that no version information is available, so the caller must make safe assumptions about the object's real version.

display_t will always return version 0.

Returns

The protocol object version of the proxy or 0

get_wrapper_type()

wrapper_type wayland::proxy_t::get_wrapper_type ( ) const

inlineinherited

Get the type of a proxy object.

Definition at line 288 of file wayland-client.hpp.

on_done()

std::function< void(uint32_t)> & callback_t::on_done

(

)

done event

Parameters

callback_data

request-specific data for the callback

Notify the client when the related request is done.

Examples

egl.cpp, and shm.cpp.

Definition at line 1641 of file wayland-client-protocol.cpp.

operator bool()

wayland::proxy_t::operator bool ( ) const

inherited

Check whether this wrapper actually wraps an object.

Returns

true if there is an underlying object, false if this wrapper is empty

operator!=()

bool wayland::proxy_t::operator!= ( const proxy_t &  right ) const

inherited

Check whether two wrappers refer to different objects.

operator==()

bool wayland::proxy_t::operator== ( const proxy_t &  right ) const

inherited

Check whether two wrappers refer to the same object.

proxy_has_object()

bool wayland::proxy_t::proxy_has_object ( ) const

inherited

Check whether this wrapper actually wraps an object.

Returns

true if there is an underlying object, false if this wrapper is empty

proxy_release()

void wayland::proxy_t::proxy_release ( )

inherited

Release the wrapped object (if any), making this an empty wrapper.

Note that display_t instances cannot be released this way. Attempts to do so are ignored.

Examples

foreign_display.cpp.

set_queue()

void wayland::proxy_t::set_queue ( event_queue_t  queue )

inherited

Assign a proxy to an event queue.

Parameters

queue

The event queue that will handle this proxy

Assign proxy to event queue. Events coming from proxy will be queued in queue instead of the display's main queue.

See also: display_t::dispatch_queue().

Examples

proxy_wrapper.cpp.

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The documentation for this class was generated from the following files:

• build/wayland-client-protocol.hpp
• build/wayland-client-protocol.cpp