wip: "multiple cascading refactors"

https://loglog.games/blog/leaving-rust-gamedev/#orphan-rule-should-be-optional is on point

crates/tek_mixer/src/mixer.rs

@@ -30,12 +30,13 @@ impl<E: Engine> Process for Mixer<E> {
         Control::Continue
     }
 }
-impl Render<Tui> for Mixer<Tui> {
-    fn render (&self, to: &mut Tui) -> Perhaps<[u16;4]> {
+impl Content for Mixer<Tui> {
+    type Engine = Tui;
+    fn content (&self) -> impl Widget<Engine = Tui> {
         let mut tracks = Split::right();
         for channel in self.tracks.iter() {
             tracks = tracks.add_ref(channel)
         }
-        tracks.render(to)
+        tracks
     }
 }

crates/tek_mixer/src/track_view.rs

@@ -1,13 +1,9 @@
 use crate::*;
 use tek_core::Direction;
 
-impl Layout<Tui> for Track<Tui> {
-    fn layout (&self, area: [u16;4]) -> Perhaps<[u16;4]> {
-        todo!()
-    }
-}
-impl Render<Tui> for Track<Tui> {
-    fn render (&self, to: &mut Tui) -> Perhaps<[u16;4]> {
+impl Content for Track<Tui> {
+    type Engine = Tui;
+    fn content (&self) -> impl Widget<Engine = Tui> {
         TrackView {
             chain:     Some(&self),
             direction: tek_core::Direction::Right,
@@ -26,7 +22,7 @@ impl Render<Tui> for Track<Tui> {
             //pub output_ports:      Vec<Port<AudioOut>>,
             //pub post_fader_meter:  f64,
             //pub route:             String,
-        }.render(to)
+        }
     }
 }
 pub struct TrackView<'a, E: Engine> {
@@ -35,7 +31,11 @@ pub struct TrackView<'a, E: Engine> {
     pub focused:   bool,
     pub entered:   bool,
 }
-impl<'a> Render<Tui> for TrackView<'a, Tui> {
+impl<'a> Widget for TrackView<'a, Tui> {
+    type Engine = Tui;
+    fn layout (&self, area: [u16;4]) -> Perhaps<[u16;4]> {
+        todo!()
+    }
     fn render (&self, to: &mut Tui) -> Perhaps<[u16;4]> {
         todo!();
         //let mut area = to.area();