Struct wayland_protocols::wp::presentation_time::client::wp_presentation::WpPresentation

pub struct WpPresentation {
    id: ObjectId,
    version: u32,
    data: Option<Arc<dyn ObjectData>>,
    backend: WeakBackend,
}

timed presentation related wl_surface requests

The main feature of this interface is accurate presentation timing feedback to ensure smooth video playback while maintaining audio/video synchronization. Some features use the concept of a presentation clock, which is defined in the presentation.clock_id event.

A content update for a wl_surface is submitted by a wl_surface.commit request. Request ‘feedback’ associates with the wl_surface.commit and provides feedback on the content update, particularly the final realized presentation time.

When the final realized presentation time is available, e.g. after a framebuffer flip completes, the requested presentation_feedback.presented events are sent. The final presentation time can differ from the compositor’s predicted display update time and the update’s target time, especially when the compositor misses its target vertical blanking period.

See also the Event enum for this interface.

Fields

id: ObjectId

version: u32

data: Option<Arc<dyn ObjectData>>

backend: WeakBackend

Implementations

impl WpPresentation

pub fn destroy(&self)

unbind from the presentation interface

Informs the server that the client will no longer be using this protocol object. Existing objects created by this object are not affected.

pub fn feedback<U: Send + Sync + 'static, D: Dispatch<WpPresentationFeedback, U> + 'static>( &self, surface: &WlSurface, qh: &QueueHandle<D>, udata: U, ) -> WpPresentationFeedback

request presentation feedback information

Request presentation feedback for the current content submission on the given surface. This creates a new presentation_feedback object, which will deliver the feedback information once. If multiple presentation_feedback objects are created for the same submission, they will all deliver the same information.

For details on what information is returned, see the presentation_feedback interface.

Trait Implementations

impl Borrow<ObjectId> for WpPresentation

fn borrow(&self) -> &ObjectId

Immutably borrows from an owned value.

impl Clone for WpPresentation

fn clone(&self) -> WpPresentation

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for WpPresentation

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

Formats the value using the given formatter.

impl Hash for WpPresentation

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

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<WpPresentation>> for WpPresentation

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialEq for WpPresentation

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Proxy for WpPresentation

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: Send + Sync + 'static>(&self) -> Option<&U>

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: Self::Request<'_>) -> Result<(), InvalidId>

Send a request for this object.

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

Send a request for this object that creates another object.

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

Create an object proxy from its ID

fn inert(backend: WeakBackend) -> Self

Create an inert object proxy

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

Parse a event for this object

fn write_request<'a>( &self, conn: &Connection, msg: Self::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 WpPresentation