pub struct Frame {
    pub callback: NewId,
}
Expand description

request a frame throttling hint

Request a notification when it is a good time to start drawing a new frame, by creating a frame callback. This is useful for throttling redrawing operations, and driving animations.

When a client is animating on a wl_surface, it can use the ‘frame’ request to get notified when it is a good time to draw and commit the next frame of animation. If the client commits an update earlier than that, it is likely that some updates will not make it to the display, and the client is wasting resources by drawing too often.

The frame request will take effect on the next wl_surface.commit. The notification will only be posted for one frame unless requested again. For a wl_surface, the notifications are posted in the order the frame requests were committed.

The server must send the notifications so that a client will not send excessive updates, while still allowing the highest possible update rate for clients that wait for the reply before drawing again. The server should give some time for the client to draw and commit after sending the frame callback events to let it hit the next output refresh.

A server should avoid signaling the frame callbacks if the surface is not visible in any way, e.g. the surface is off-screen, or completely obscured by other opaque surfaces.

The object returned by this request will be destroyed by the compositor after the callback is fired and as such the client must not attempt to use it after that point.

The callback_data passed in the callback is the current time, in milliseconds, with an undefined base.

Fields§

§callback: NewId

Implementations§

source§

impl Frame

source

pub const OPCODE: u16 = 3u16

Trait Implementations§

source§

impl Clone for Frame

source§

fn clone(&self) -> Frame

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
source§

impl Debug for Frame

source§

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

Formats the value using the given formatter. Read more
source§

impl<'a> Deserialize<'a> for Frame

source§

fn deserialize(data: &'a [u8], fds: &'a [RawFd]) -> Result<Self, Error>

Deserialize from the given buffer. Returns deserialized message, and number of bytes and file descriptors consumed, respectively.
source§

impl PartialEq<Frame> for Frame

source§

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

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

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.
source§

impl Serialize for Frame

source§

fn serialize<Fds: Extend<OwnedFd>>(self, buf: &mut BytesMut, fds: &mut Fds)

Serialize into the buffered writer. This function returns no errors, failures in seializing are generally program errors, and triggers panicking. Read more
source§

fn len(&self) -> u16

How many bytes will this message serialize to. Including the 8 byte header.
source§

fn nfds(&self) -> u8

How many file descriptors will this message serialize to.
source§

impl Copy for Frame

source§

impl Eq for Frame

source§

impl StructuralEq for Frame

source§

impl StructuralPartialEq for Frame

Auto Trait Implementations§

§

impl RefUnwindSafe for Frame

§

impl Send for Frame

§

impl Sync for Frame

§

impl Unpin for Frame

§

impl UnwindSafe for Frame

Blanket Implementations§

source§

impl<T> Any for Twhere T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Az for T

source§

fn az<Dst>(self) -> Dstwhere T: Cast<Dst>,

Casts the value.
source§

impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<Src, Dst> CastFrom<Src> for Dstwhere Src: Cast<Dst>,

source§

fn cast_from(src: Src) -> Dst

Casts the value.
source§

impl<T> CheckedAs for T

source§

fn checked_as<Dst>(self) -> Option<Dst>where T: CheckedCast<Dst>,

Casts the value.
source§

impl<Src, Dst> CheckedCastFrom<Src> for Dstwhere Src: CheckedCast<Dst>,

source§

fn checked_cast_from(src: Src) -> Option<Dst>

Casts the value.
§

impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

§

fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
source§

impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<Src, Dst> LosslessTryInto<Dst> for Srcwhere Dst: LosslessTryFrom<Src>,

source§

fn lossless_try_into(self) -> Option<Dst>

Performs the conversion.
source§

impl<Src, Dst> LossyInto<Dst> for Srcwhere Dst: LossyFrom<Src>,

source§

fn lossy_into(self) -> Dst

Performs the conversion.
source§

impl<T> OverflowingAs for T

source§

fn overflowing_as<Dst>(self) -> (Dst, bool)where T: OverflowingCast<Dst>,

Casts the value.
source§

impl<Src, Dst> OverflowingCastFrom<Src> for Dstwhere Src: OverflowingCast<Dst>,

source§

fn overflowing_cast_from(src: Src) -> (Dst, bool)

Casts the value.
source§

impl<T> Same<T> for T

§

type Output = T

Should always be Self
source§

impl<T> SaturatingAs for T

source§

fn saturating_as<Dst>(self) -> Dstwhere T: SaturatingCast<Dst>,

Casts the value.
source§

impl<Src, Dst> SaturatingCastFrom<Src> for Dstwhere Src: SaturatingCast<Dst>,

source§

fn saturating_cast_from(src: Src) -> Dst

Casts the value.
source§

impl<T> ToOwned for Twhere T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<T> UnwrappedAs for T

source§

fn unwrapped_as<Dst>(self) -> Dstwhere T: UnwrappedCast<Dst>,

Casts the value.
source§

impl<Src, Dst> UnwrappedCastFrom<Src> for Dstwhere Src: UnwrappedCast<Dst>,

source§

fn unwrapped_cast_from(src: Src) -> Dst

Casts the value.
source§

impl<T> WrappingAs for T

source§

fn wrapping_as<Dst>(self) -> Dstwhere T: WrappingCast<Dst>,

Casts the value.
source§

impl<Src, Dst> WrappingCastFrom<Src> for Dstwhere Src: WrappingCast<Dst>,

source§

fn wrapping_cast_from(src: Src) -> Dst

Casts the value.