Struct WlCallback

pub struct WlCallback { /* private fields */ }

Available on crate feature wayland and Linux only.

callback object

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

Note, because wl_callback objects are created from multiple independent factory interfaces, the wl_callback interface is frozen at version 1.

See also the Event enum for this interface.

Trait Implementations

impl Borrow<ObjectId> for WlCallback

fn borrow(&self) -> &ObjectId

Immutably borrows from an owned value.

impl Clone for WlCallback

fn clone(&self) -> WlCallback

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for WlCallback

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<D> Dispatch<WlCallback, WlSurface, D> for CompositorState

where D: Dispatch<WlCallback, WlSurface> + CompositorHandler,

fn event( state: &mut D, _: &WlCallback, event: Event, surface: &WlSurface, conn: &Connection, qh: &QueueHandle<D>, )

Called when an event from the server is processed

fn event_created_child( opcode: u16, _qhandle: &QueueHandle<State>, ) -> Arc<dyn ObjectData>

Method used to initialize the user-data of objects created by events

impl Hash for WlCallback

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq<Weak<WlCallback>> for WlCallback

fn eq(&self, other: &Weak<WlCallback>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialEq for WlCallback

fn eq(&self, other: &WlCallback) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Proxy for WlCallback

type Request<'request> = Request<'request>

The request enum for this interface

type Event = Event

The event enum for this interface

fn interface() -> &'static Interface

The interface description

fn id(&self) -> ObjectId

The ID of this object

fn version(&self) -> u32

The version of this object

fn data<U>(&self) -> Option<&U>

where U: Send + Sync + 'static,

Access the user-data associated with this object

fn object_data(&self) -> Option<&Arc<dyn ObjectData>>

Access the raw data associated with this object.

fn backend(&self) -> &WeakBackend

Access the backend associated with this object

fn send_request( &self, req: <WlCallback as Proxy>::Request<'_>, ) -> Result<(), InvalidId>

Send a request for this object.

fn send_constructor<I>( &self, req: <WlCallback as Proxy>::Request<'_>, data: Arc<dyn ObjectData>, ) -> Result<I, InvalidId>

where I: Proxy,

Send a request for this object that creates another object.

fn from_id(conn: &Connection, id: ObjectId) -> Result<WlCallback, InvalidId>

Create an object proxy from its ID

fn inert(backend: WeakBackend) -> WlCallback

Create an inert object proxy

fn parse_event( conn: &Connection, msg: Message<ObjectId, OwnedFd>, ) -> Result<(WlCallback, <WlCallback as Proxy>::Event), DispatchError>

Parse a event for this object

fn write_request<'a>( &self, conn: &Connection, msg: <WlCallback as Proxy>::Request<'a>, ) -> Result<(Message<ObjectId, BorrowedFd<'a>>, Option<(&'static Interface, u32)>), InvalidId>

Serialize a request for this object

fn is_alive(&self) -> bool

Checks if the Wayland object associated with this proxy is still alive

fn downgrade(&self) -> Weak<Self>

Creates a weak handle to this object

impl Eq for WlCallback