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🪞👃🪞 2024-09-07 16:44:49 +03:00
parent 7bcd40b425
commit b3f0f60400
13 changed files with 462 additions and 180 deletions
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7
crates/tek_core/src/engine/collect.rs
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@ -54,6 +54,13 @@ impl<'a, E: Engine> Collect<'a, E> for Collection<'a, E> {
}
}
pub struct Layers<'a, E: Engine>(pub &'a [&'a dyn Render<E>]);
// this actually works, except for the type inference
//pub struct Layers<'a, E: Engine + 'a, I: std::iter::IntoIterator<Item = &'a dyn Render<E>>>(
//pub &'a I
//);
pub struct Layered<'a, E: Engine>(pub Collection<'a, E>);
impl<'a, E: Engine> Layered<'a, E> {

22
crates/tek_core/src/engine/render.rs
View file

@ -57,13 +57,15 @@ impl<R, E: Engine> Render<E> for RwLock<R> where R: Render<E> {
}
}
/// Boxed closures can be rendered.
///
/// Rendering unboxed closures should also be possible;
/// but in practice implementing the trait for an unboxed
/// `Fn` closure causes an impl conflict.
impl<'a, E: Engine> Render<E> for Box<dyn Fn(&mut E) -> Perhaps<E::Rendered> + Send + Sync + 'a> {
fn render (&self, to: &mut E) -> Perhaps<E::Rendered> {
(*self)(to)
}
}
// FIXME: components are now 2 thunks (layout and render).
// maybe this resolves the conflict describe below?
///// Boxed closures can be rendered.
/////
///// Rendering unboxed closures should also be possible;
///// but in practice implementing the trait for an unboxed
///// `Fn` closure causes an impl conflict.
//impl<'a, E: Engine> Render<E> for Box<dyn Fn(&mut E) -> Perhaps<E::Rendered> + Send + Sync + 'a> {
//fn render (&self, to: &mut E) -> Perhaps<E::Rendered> {
//(*self)(to)
//}
//}