Struct AnimSpec 

pub struct AnimSpec {
    pub duration_ms: u32,
    pub delay_ms: u32,
    pub curve: Curve,
    pub repeat: u32,
    pub autoreverse: bool,
}

Animation intent (§8.4). Native-widget backends map it onto their own animator (Core Animation, ViewPropertyAnimator, XAML Composition, OH_ArkUI_AnimateTo, …); the canvas/self-driven path samples curve via Curve::fraction. Threaded through Toolkit::update/set_frame/ set_opacity/set_transform.

Fields

duration_ms: u32

delay_ms: u32

curve: Curve

repeat: u32

Repeat count beyond the first play (0 = play once); u32::MAX = repeat forever.

autoreverse: bool

Implementations

impl AnimSpec

pub fn spring(response: f64, damping: f64) -> Self

A smooth spring: response = settling period (s), damping = ratio (1.0 = no bounce, <1 bouncy). duration_ms is a nominal cap for backends that need a duration; spring backends use response/damping directly.

pub fn linear(duration_ms: u32) -> Self

pub fn ease_in(duration_ms: u32) -> Self

pub fn ease_out(duration_ms: u32) -> Self

pub fn ease_in_out(duration_ms: u32) -> Self

pub fn delay(self, ms: u32) -> Self

Delay before the animation starts (builder).

pub fn repeat(self, count: u32, autoreverse: bool) -> Self

Repeat count extra times (builder); autoreverse ping-pongs each cycle.

pub fn repeat_forever(self, autoreverse: bool) -> Self

Repeat forever (builder) — e.g. a pulsing indicator.

pub fn duration_secs(&self) -> f64

pub fn delay_secs(&self) -> f64

Trait Implementations

impl Clone for AnimSpec

fn clone(&self) -> AnimSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AnimSpec

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

Formats the value using the given formatter.

impl Default for AnimSpec

fn default() -> Self

The default feel: a smooth spring (SwiftUI’s modern default).

impl PartialEq for AnimSpec

fn eq(&self, other: &AnimSpec) -> 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 Copy for AnimSpec

impl StructuralPartialEq for AnimSpec