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define RenderDyn, RenderBox

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🪞👃🪞 2025-01-05 11:24:49 +01:00
parent ee40fff168
commit f24d5dfed0
7 changed files with 20 additions and 22 deletions
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11
engine/src/output/content.rs
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@ -6,12 +6,7 @@ pub trait Content<E: Engine>: Send + Sync + Sized {
fn layout (&self, area: E::Area) -> E::Area { self.content().layout(area) }
fn render (&self, output: &mut E::Output) { self.content().render(output) }
}
impl<'a, E: Engine> Content<E> for Box<dyn Render<E> + 'a> {
fn content (&self) -> impl Render<E> { self }
}
impl<'a, E: Engine> Content<E> for Box<dyn Render<E> + Send + Sync + 'a> {
fn content (&self) -> impl Render<E> { self }
}
impl<E: Engine> Content<E> for &(dyn Render<E> + '_) {
fn content (&self) -> impl Render<E> { self }
impl<E: Engine, C: Content<E>> Render<E> for C {
fn layout (&self, area: E::Area) -> E::Area { Content::layout(self, area) }
fn render (&self, output: &mut E::Output) { Content::render(self, output) }
}

14
engine/src/output/render.rs
View file

@ -4,9 +4,15 @@ use crate::*;
pub trait Render<E: Engine>: Send + Sync {
fn layout (&self, area: E::Area) -> E::Area;
fn render (&self, output: &mut E::Output);
fn boxed <'a> (self) -> RenderBox<'a, E> where Self: Sized + 'a {
Box::new(self) as RenderBox<'a, E>
}
}
impl<E: Engine, C: Content<E>> Render<E> for C {
fn layout (&self, area: E::Area) -> E::Area { Content::layout(self, area) }
fn render (&self, output: &mut E::Output) { Content::render(self, output) }
pub type RenderDyn<'a, Engine> = dyn Render<Engine> + 'a;
impl<'a, E: Engine> Content<E> for &RenderDyn<'a, E> where Self: Sized {
fn content (&self) -> impl Render<E> { self }
}
pub type RenderBox<'a, E: Engine> = Box<RenderDyn<'a, E>>;
impl<'a, E: Engine> Content<E> for RenderBox<'a, E> {
fn content (&self) -> impl Render<E> { self }
}