Implement composable, type-safe renderer fallback

1 files changed, 6 insertions, 4 deletions

diff --git a/examples/multitouch/src/main.rs b/examples/multitouch/src/main.rs
index 2453c7f5..41bd0151 100644
--- a/examples/multitouch/src/main.rs
+++ b/examples/multitouch/src/main.rs
@@ -5,7 +5,7 @@ use iced::mouse;
 use iced::touch;
 use iced::widget::canvas::event;
 use iced::widget::canvas::stroke::{self, Stroke};
-use iced::widget::canvas::{self, Canvas, Geometry};
+use iced::widget::canvas::{self, Canvas};
 use iced::{Color, Element, Length, Point, Rectangle, Renderer, Theme};
 
 use std::collections::HashMap;
@@ -83,11 +83,13 @@ impl canvas::Program<Message> for Multitouch {
     fn draw(
         &self,
         _state: &Self::State,
-        renderer: &Renderer,
+        renderer: &mut Renderer,
         _theme: &Theme,
         bounds: Rectangle,
         _cursor: mouse::Cursor,
-    ) -> Vec<Geometry> {
+    ) {
+        use canvas::Frame;
+
         let fingerweb = self.cache.draw(renderer, bounds.size(), |frame| {
             if self.fingers.len() < 2 {
                 return;
@@ -154,6 +156,6 @@ impl canvas::Program<Message> for Multitouch {
             }
         });
 
-        vec![fingerweb]
+        renderer.draw_geometry([fingerweb]);
     }
 }