Introduce `viewport` to `Widget::draw`

This should eventually allow us to only generate primitives that are
visible.

1 files changed, 7 insertions, 1 deletions

diff --git a/native/src/user_interface.rs b/native/src/user_interface.rs
index 00a290f1..59d91f42 100644
--- a/native/src/user_interface.rs
+++ b/native/src/user_interface.rs
@@ -1,4 +1,6 @@
-use crate::{layout, overlay, Clipboard, Element, Event, Layout, Point, Size};
+use crate::layout;
+use crate::overlay;
+use crate::{Clipboard, Element, Event, Layout, Point, Rectangle, Size};
 
 use std::hash::Hasher;
 
@@ -327,6 +329,8 @@ where
         renderer: &mut Renderer,
         cursor_position: Point,
     ) -> Renderer::Output {
+        let viewport = Rectangle::with_size(self.bounds);
+
         let overlay = if let Some(mut overlay) =
             self.root.overlay(Layout::new(&self.base.layout))
         {
@@ -365,6 +369,7 @@ where
                 &Renderer::Defaults::default(),
                 Layout::new(&self.base.layout),
                 base_cursor,
+                &viewport,
             );
 
             renderer.overlay(
@@ -378,6 +383,7 @@ where
                 &Renderer::Defaults::default(),
                 Layout::new(&self.base.layout),
                 cursor_position,
+                &viewport,
             )
         }
     }