Struct Checkbox 

pub struct Checkbox {
    pub checked: bool,
    pub indeterminate: bool,
    /* private fields */
}

A checkbox with optional label — brought to the Quality Bar (see .steering/WIDGET_QUALITY_BAR.md; matches the Switch exemplar).

• States — unchecked/checked/indeterminate · hover · pressed (box dips) · focus-visible (ring) · disabled (dimmed, inert).
• Motion — box fill + border ease on toggle; the checkmark pops in (scales 0.5→1 while it fades); the hover/press/focus state-layer halo fades smoothly. Three independent animation channels, all idle when settled.
• Theming — fill from primary, border from outline, ink is a bright high-contrast tick; light+dark adaptive; overridable.
• A11y — Role::Checkbox with checked/unchecked value + optional label.
• Interactive-by-identity — always owns its hit region.

Fields

checked: bool

indeterminate: bool

Implementations

impl Checkbox

pub fn new(checked: bool) -> Self

pub fn label(self, l: impl Into<String>) -> Self

pub fn on_change(self, f: impl Fn(bool) + Send + Sync + 'static) -> Self

Called with the NEW value when the control is toggled (D094).

pub fn indeterminate(self) -> Self

pub fn disabled(self) -> Self

pub fn disabled_if(self, c: bool) -> Self

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

Override the checked fill color (default: theme primary).

pub fn size(self, s: f32) -> Self

Trait Implementations

impl Widget for Checkbox

fn layout(&self, ctx: &LayoutCtx<'_>) -> Size

Measure under ctx.constraints and return a size within them.

fn paint(&self, ctx: &mut PaintCtx<'_>)

Record draw commands for ctx.rect.

fn children(&self) -> Children<'_>

Declare this widget’s children. Drives every default below.

fn flex_factor(&self) -> f32

Flex weight inside Row/Column. Wrappers are transparent by default.

fn into_element(self) -> Element

where Self: Sized + 'static,

Wrap this widget in an Element so it can be returned from Component::build().