1 files changed, 16 insertions, 11 deletions
diff --git a/native/src/renderer.rs b/native/src/renderer.rs
index a16df72b..39a6cff1 100644
--- a/native/src/renderer.rs
+++ b/native/src/renderer.rs
@@ -13,19 +13,19 @@
 //! In the end, a __renderer__ satisfying all the constraints is
 //! needed to build a [`UserInterface`].
 //!
-//! [`Widget`]: ../widget/trait.Widget.html
-//! [`UserInterface`]: ../struct.UserInterface.html
-//! [`Text`]: ../widget/text/struct.Text.html
-//! [`text::Renderer`]: ../widget/text/trait.Renderer.html
-//! [`Checkbox`]: ../widget/checkbox/struct.Checkbox.html
-//! [`checkbox::Renderer`]: ../widget/checkbox/trait.Renderer.html
+//! [`Widget`]: crate::Widget
+//! [`UserInterface`]: crate::UserInterface
+//! [`Text`]: crate::widget::Text
+//! [`text::Renderer`]: crate::widget::text::Renderer
+//! [`Checkbox`]: crate::widget::Checkbox
+//! [`checkbox::Renderer`]: crate::widget::checkbox::Renderer
 
 #[cfg(debug_assertions)]
 mod null;
 #[cfg(debug_assertions)]
 pub use null::Null;
 
-use crate::{layout, Element};
+use crate::{layout, Element, Rectangle};
 
 /// A component that can take the state of a user interface and produce an
 /// output for its users.
@@ -34,15 +34,11 @@ pub trait Renderer: Sized {
     ///
     /// If you are implementing a graphical renderer, your output will most
     /// likely be a tree of visual primitives.
-    ///
-    /// [`Renderer`]: trait.Renderer.html
     type Output;
 
     /// The default styling attributes of the [`Renderer`].
     ///
     /// This type can be leveraged to implement style inheritance.
-    ///
-    /// [`Renderer`]: trait.Renderer.html
     type Defaults: Default;
 
     /// Lays out the elements of a user interface.
@@ -56,4 +52,13 @@ pub trait Renderer: Sized {
     ) -> layout::Node {
         element.layout(self, limits)
     }
+
+    /// Overlays the `overlay` output with the given bounds on top of the `base`
+    /// output.
+    fn overlay(
+        &mut self,
+        base: Self::Output,
+        overlay: Self::Output,
+        overlay_bounds: Rectangle,
+    ) -> Self::Output;
 }