Struct TypedTimeline 

pub struct TypedTimeline { /* private fields */ }

A heterogeneous timeline of scalar, color, style, SVG and target tracks. Track setup allocates; samples reuse each track’s state. Deferred tracks keep scheduling even before their first visible sample. Ownership is explicit.

Implementations

impl TypedTimeline

pub fn at<T: MotionData<N>, const N: usize>( &mut self, start: Duration, initial: T, clip: TypedAnimation<T, N>, ) -> TrackId<T, N>

Adds a typed track at an absolute playhead position, with its initial value.

pub fn after<T: MotionData<N>, const N: usize>( &mut self, seconds: f64, initial: T, clip: TypedAnimation<T, N>, ) -> Result<TrackId<T, N>, AnimationError>

Adds after the preceding track’s end, with positive delay or negative overlap. Fails without mutation after a forever track or for a negative/invalid time.

pub fn label( &mut self, name: impl Into<String>, at: Duration, ) -> Result<(), AnimationError>

Records a unique label at an absolute position.

pub fn at_label<T: MotionData<N>, const N: usize>( &mut self, name: &str, seconds: f64, initial: T, clip: TypedAnimation<T, N>, ) -> Result<TrackId<T, N>, AnimationError>

Adds at a label with a signed seconds offset; missing labels fail transactionally.

pub fn sample(&mut self, now: Duration, reduced: bool)

Samples all tracks and dispatches completion observers at the end.

pub fn value<T: MotionData<N>, const N: usize>( &self, id: TrackId<T, N>, ) -> Option<T>

Reads a sampled typed value; foreign track identities return None.

pub fn pause(&mut self, now: Duration)

Pauses the shared clock.

pub fn play(&mut self, now: Duration)

Resumes the shared clock.

pub fn seek(&mut self, time: Duration, now: Duration)

Seeks without replacing prepared tracks.

pub fn set_speed( &mut self, speed: f64, now: Duration, ) -> Result<(), AnimationError>

Changes speed, including zero and reverse playback.

pub fn restart(&mut self, now: Duration)

Restarts and rearms reduced-motion completion.

pub fn completion(&mut self) -> Completion

Completion observer for this run. Dropping this timeline cancels observers.

pub fn is_animating(&self) -> bool

Whether another sample is required, including upcoming delayed tracks.

pub fn now(&self, cx: &App) -> Duration

Native executor time for controls.

pub fn frame(&mut self, window: &mut Window, cx: &App)

Samples a stock CE window using its executor; do not mix with explicit time.

Trait Implementations

impl Debug for TypedTimeline

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

Formats the value using the given formatter.

impl Default for TypedTimeline

fn default() -> Self

Returns the “default value” for a type.