buoyant 0.6.1

SwiftUI-like UIs in Rust for embedded devices
Documentation 
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use crate::{
    environment::LayoutEnvironment,
    layout::ResolvedLayout,
    primitives::{Point, ProposedDimensions},
    transition::Opacity,
    view::{ViewLayout, ViewMarker},
};

/// A capsule primitive, oriented horizontally
///
/// By default, this renders a filled shape with the inherited foreground color.
/// To render with a stroke instead, use [`ShapeExt::stroked`][`super::ShapeExt::stroked`]
/// or [`ShapeExt::stroked_offset`][`super::ShapeExt::stroked_offset`].
#[derive(Debug, Copy, Clone, PartialEq, Eq, Default)]
pub struct Capsule;

impl ViewMarker for Capsule {
    type Renderables = crate::render::Capsule;
    type Transition = Opacity;
}

impl<Captures: ?Sized> ViewLayout<Captures> for Capsule {
    type State = ();
    type Sublayout = ();

    fn transition(&self) -> Self::Transition {
        Opacity
    }

    fn build_state(&self, _captures: &mut Captures) -> Self::State {}

    fn layout(
        &self,
        offer: &ProposedDimensions,
        _: &impl LayoutEnvironment,
        _captures: &mut Captures,
        _state: &mut Self::State,
    ) -> ResolvedLayout<Self::Sublayout> {
        ResolvedLayout {
            sublayouts: (),
            resolved_size: offer.resolve_most_flexible(0, 1),
        }
    }

    fn render_tree(
        &self,
        layout: &ResolvedLayout<Self::Sublayout>,
        origin: Point,
        _env: &impl LayoutEnvironment,
        _captures: &mut Captures,
        _state: &mut Self::State,
    ) -> Self::Renderables {
        crate::render::Capsule {
            origin,
            size: layout.resolved_size.into(),
        }
    }
}