Struct DropdownFieldWidget 

pub struct DropdownFieldWidget { /* private fields */ }

The retained widget for a DropdownFieldView.

Implementations

impl DropdownFieldWidget

pub fn width(&self) -> f64

The field’s resolved width, in logical px.

pub fn height(&self) -> f64

The field’s resolved height, in logical px — which grows with the chip strip.

pub fn arrow_radians(&self) -> f64

The arrow’s rotation, in radians: 0 closed, π open.

pub fn chip_count(&self) -> usize

The number of chips currently retained, including any still playing their exit ramp.

Trait Implementations

impl Widget for DropdownFieldWidget

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

Choose a size within bc and return it. The chosen size must satisfy bc (callers may additionally clamp via BoxConstraints::constrain).

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

Emit draw commands for this widget into scene.

fn event(&mut self, ctx: &mut EventCtx<'_>, event: &InputEvent) -> EventResult

Handle an input event, optionally mutating application state through ctx and reporting whether it was consumed.

fn semantics(&self, ctx: &mut SemanticsCtx)

Contribute this widget’s accessibility node(s) into ctx.

fn visit_children(&self, visitor: &mut dyn FnMut(&ChildPod))

Visit this widget’s owned ChildPods, in declaration (paint) order — the read-only seam that makes the retained hierarchy enumerable.

fn type_name(&self) -> &'static str

This widget’s concrete type name, for read-only tooling.