Draft support for dynamic custom renderer injection

core/src/image.rs

@@ -186,11 +186,11 @@ pub trait Renderer: crate::Renderer {
     type Handle: Clone + Hash;
 
     /// Returns the dimensions of an image for the given [`Handle`].
-    fn dimensions(&self, handle: &Self::Handle) -> Size<u32>;
+    fn measure_image(&self, handle: &Self::Handle) -> Size<u32>;
 
     /// Draws an image with the given [`Handle`] and inside the provided
     /// `bounds`.
-    fn draw(
+    fn draw_image(
         &mut self,
         handle: Self::Handle,
         filter_method: FilterMethod,

core/src/renderer.rs

@@ -10,7 +10,7 @@ use crate::{
 };
 
 /// A component that can be used by widgets to draw themselves on a screen.
-pub trait Renderer: Sized {
+pub trait Renderer {
     /// Draws the primitives recorded in the given closure in a new layer.
     ///
     /// The layer will clip its contents to the provided `bounds`.

core/src/svg.rs

@@ -91,8 +91,13 @@ impl std::fmt::Debug for Data {
 /// [renderer]: crate::renderer
 pub trait Renderer: crate::Renderer {
     /// Returns the default dimensions of an SVG for the given [`Handle`].
-    fn dimensions(&self, handle: &Handle) -> Size<u32>;
+    fn measure_svg(&self, handle: &Handle) -> Size<u32>;
 
     /// Draws an SVG with the given [`Handle`], an optional [`Color`] filter, and inside the provided `bounds`.
-    fn draw(&mut self, handle: Handle, color: Option<Color>, bounds: Rectangle);
+    fn draw_svg(
+        &mut self,
+        handle: Handle,
+        color: Option<Color>,
+        bounds: Rectangle,
+    );
 }