Struct BottomNavigationBar 

pub struct BottomNavigationBar { /* private fields */ }

The bar itself — a multi-destination leaf (paints its items directly, the NavRail pattern).

Implementations

impl BottomNavigationBar

pub fn new() -> Self

pub fn item(self, i: BottomNavItem) -> Self

pub fn height(self, h: f32) -> Self

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

Bar fill — defaults to the theme’s surface.

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

Selected label/icon tint — defaults to the theme’s primary.

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

Unselected tint — defaults to the theme’s on_surface dimmed.

pub fn radius(self, r: f32) -> Self

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

pub fn no_divider(self) -> Self

pub fn material(self, m: ShaderMaterial) -> Self

Per-instance shader material — replaces the bar fill when resolved. Beats the theme’s BottomNavMaterial default (D124 Step 5).

Trait Implementations

impl Default for BottomNavigationBar

fn default() -> Self

Returns the “default value” for a type.

impl Widget for BottomNavigationBar

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().