diff options
Diffstat (limited to 'graphics/src/renderer.rs')
-rw-r--r-- | graphics/src/renderer.rs | 74 |
1 files changed, 43 insertions, 31 deletions
diff --git a/graphics/src/renderer.rs b/graphics/src/renderer.rs index de905503..c0cec60a 100644 --- a/graphics/src/renderer.rs +++ b/graphics/src/renderer.rs @@ -18,7 +18,7 @@ use std::marker::PhantomData; #[derive(Debug)] pub struct Renderer<B: Backend, Theme> { backend: B, - primitives: Vec<Primitive>, + primitives: Vec<Primitive<B::Primitive>>, theme: PhantomData<Theme>, } @@ -38,7 +38,7 @@ impl<B: Backend, T> Renderer<B, T> { } /// Enqueues the given [`Primitive`] in the [`Renderer`] for drawing. - pub fn draw_primitive(&mut self, primitive: Primitive) { + pub fn draw_primitive(&mut self, primitive: Primitive<B::Primitive>) { self.primitives.push(primitive); } @@ -46,16 +46,46 @@ impl<B: Backend, T> Renderer<B, T> { /// of the [`Renderer`]. pub fn with_primitives<O>( &mut self, - f: impl FnOnce(&mut B, &[Primitive]) -> O, + f: impl FnOnce(&mut B, &[Primitive<B::Primitive>]) -> O, ) -> O { f(&mut self.backend, &self.primitives) } + + /// Starts recording a new layer. + pub fn start_layer(&mut self) -> Vec<Primitive<B::Primitive>> { + std::mem::take(&mut self.primitives) + } + + /// Ends the recording of a layer. + pub fn end_layer( + &mut self, + primitives: Vec<Primitive<B::Primitive>>, + bounds: Rectangle, + ) { + let layer = std::mem::replace(&mut self.primitives, primitives); + + self.primitives.push(Primitive::group(layer).clip(bounds)); + } + + /// Starts recording a translation. + pub fn start_translation(&mut self) -> Vec<Primitive<B::Primitive>> { + std::mem::take(&mut self.primitives) + } + + /// Ends the recording of a translation. + pub fn end_translation( + &mut self, + primitives: Vec<Primitive<B::Primitive>>, + translation: Vector, + ) { + let layer = std::mem::replace(&mut self.primitives, primitives); + + self.primitives + .push(Primitive::group(layer).translate(translation)); + } } -impl<B, T> iced_core::Renderer for Renderer<B, T> -where - B: Backend, -{ +impl<B: Backend, T> iced_core::Renderer for Renderer<B, T> { type Theme = T; fn layout<Message>( @@ -63,21 +93,17 @@ where element: &Element<'_, Message, Self>, limits: &layout::Limits, ) -> layout::Node { - let layout = element.as_widget().layout(self, limits); - self.backend.trim_measurements(); - layout + element.as_widget().layout(self, limits) } fn with_layer(&mut self, bounds: Rectangle, f: impl FnOnce(&mut Self)) { - let current = std::mem::take(&mut self.primitives); + let current = self.start_layer(); f(self); - let layer = std::mem::replace(&mut self.primitives, current); - - self.primitives.push(Primitive::group(layer).clip(bounds)); + self.end_layer(current, bounds); } fn with_translation( @@ -85,14 +111,11 @@ where translation: Vector, f: impl FnOnce(&mut Self), ) { - let current = std::mem::take(&mut self.primitives); + let current = self.start_translation(); f(self); - let layer = std::mem::replace(&mut self.primitives, current); - - self.primitives - .push(Primitive::group(layer).translate(translation)); + self.end_translation(current, translation); } fn fill_quad( @@ -140,7 +163,7 @@ where font: Font, bounds: Size, shaping: text::Shaping, - ) -> (f32, f32) { + ) -> Size { self.backend().measure( content, size, @@ -229,14 +252,3 @@ where }) } } - -#[cfg(feature = "geometry")] -impl<B, T> crate::geometry::Renderer for Renderer<B, T> -where - B: Backend, -{ - fn draw(&mut self, layers: Vec<crate::Geometry>) { - self.primitives - .extend(layers.into_iter().map(crate::Geometry::into)); - } -} |