Struct PreObservers 

pub struct PreObservers { /* private fields */ }

Bundle of observers to attach atomically to a new animation.

AnimationHandle::on_* can only be called after the handle is returned, which races against the worker’s first tick — a completion that fires before your on_icon_complete callback is registered will simply be lost. Passing observers through this bundle via DesktopController::animate_with_observers installs them before the worker enters its tick loop.

let obs = PreObservers::new()
    .on_tick(|ctx| println!("tick #{}", ctx.finalized_icons))
    .on_finish(|reason| println!("finished: {reason:?}"));

Implementations

impl PreObservers

pub fn new() -> Self

pub fn on_start<F>(self, cb: F) -> Self

where F: Fn(&StartContext) + Send + Sync + 'static,

pub fn on_tick<F>(self, cb: F) -> Self

where F: Fn(&TickContext) + Send + Sync + 'static,

pub fn on_icon_complete<F>(self, cb: F) -> Self

where F: Fn(&IconId) + Send + Sync + 'static,

pub fn on_finish<F>(self, cb: F) -> Self

where F: Fn(&FinishReason) + Send + Sync + 'static,

Trait Implementations

impl Clone for PreObservers

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for PreObservers

fn default() -> Self

Returns the “default value” for a type.