Struct CircularProgressView 

pub struct CircularProgressView { /* private fields */ }

A circular progress indicator, classic or wavy. See the module docs.

Implementations

impl CircularProgressView

pub fn wavy(self) -> Self

Switch to the wavy variant — the builder form of circular_wavy_progress.

pub fn diameter(self, diameter: f64) -> Self

Outer diameter in logical px (M3EProgressIndicator.size), overriding the 40dp classic / 48dp wavy default.

pub fn color(self, color: Color) -> Self

Active-arc colour (M3EProgressIndicator.color), overriding the theme’s colors.primary.

pub fn track_color(self, color: Color) -> Self

Track-arc colour (M3EProgressIndicator.trackColor), overriding the theme’s colors.secondary_container.

pub fn stroke_width(self, stroke: f64) -> Self

Active-arc stroke thickness in logical px (M3EProgressIndicator.strokeWidth).

pub fn track_stroke_width(self, stroke: f64) -> Self

Track-arc stroke thickness in logical px (M3EProgressIndicator.trackStrokeWidth).

pub fn gap_size(self, gap: f64) -> Self

Clear space between the active arc and the track, in logical px (M3EProgressIndicator.gapSize). Applied twice — once at each end of the active arc — so the ring reads as two separated arcs.

pub fn amplitude(self, amplitude: f64) -> Self

Fix the wave’s amplitude factor (0..=1, M3EProgressIndicator.amplitude). Inert unless the indicator is wavy; outranked by Self::amplitude_for_progress.

pub fn amplitude_for_progress<F: Fn(f64) -> f64 + 'static>( self, curve: F, ) -> Self

Drive the wave’s amplitude factor from the current progress (M3EProgressIndicator.amplitudeForProgress) — see LinearProgressView::amplitude_for_progress for the full contract.

pub fn wavelength(self, wavelength: f64) -> Self

Length of one full wave cycle along the ring, in logical px (M3EProgressIndicator.wavelength, defaulting to 15). Rounded to a whole number of cycles around the circumference so the wave closes on itself. Inert unless the indicator is wavy.

pub fn wave_speed(self, wave_speed: f64) -> Self

How fast the wave travels, in logical px per second (M3EProgressIndicator.waveSpeed, defaulting to the wavelength). Inert unless the indicator is wavy.

Trait Implementations

impl<State: 'static> View<State> for CircularProgressView

type Element = CircularProgressWidget

The retained widget this view produces.

fn build(&self, _ctx: &mut BuildCtx<'_>) -> CircularProgressWidget

Materialise a fresh widget for this view.

fn rebuild( &self, prev: &Self, element: &mut CircularProgressWidget, _ctx: &mut BuildCtx<'_>, ) -> ChangeFlags

Reconcile prev (the previous view of the same type) against the live element, mutating it in place and reporting what changed.

fn teardown(&self, _element: &mut Self::Element, _ctx: &mut BuildCtx<'_>)

Tear down element when this view is being removed.

fn message(&self, _element: &mut Self::Element, _state: &mut State)

Deliver an event message to this view, mutating application state.