30 lines
697 B
Rust
30 lines
697 B
Rust
use taffy::{AvailableSpace, Size};
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use crate::{Node, View};
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pub trait Widget<C> {
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#[allow(unused_variables)]
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fn size(
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&mut self,
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ctx: &mut C,
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known: Size<Option<f32>>,
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available: Size<AvailableSpace>,
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) -> Size<f32> {
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Size::ZERO
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}
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fn draw_below(&mut self, ctx: &mut C, view: &mut View<'_>) -> anyhow::Result<()>;
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fn draw_above(&mut self, ctx: &mut C, view: &mut View<'_>) -> anyhow::Result<()>;
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}
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pub type BoxedWidget<C> = Box<dyn Widget<C>>;
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pub trait WidgetExt<C> {
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fn node(self) -> Node<C>;
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}
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impl<C, W: Widget<C> + 'static> WidgetExt<C> for W {
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fn node(self) -> Node<C> {
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Node::empty().widget(self)
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}
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}
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