and it once again compiles

crates/tek_mixer/src/track_view.rs

@@ -0,0 +1,43 @@
+use crate::*;
+use tek_core::Direction;
+
+pub struct TrackView<'a> {
+    pub chain:     Option<&'a Track>,
+    pub direction: Direction,
+    pub focused:   bool,
+    pub entered:   bool,
+}
+
+impl<'a> Render for TrackView<'a> {
+    fn render (&self, buf: &mut Buffer, mut area: Rect) -> Usually<Rect> {
+        if let Some(chain) = self.chain {
+            match self.direction {
+                Direction::Down  => area.width = area.width.min(40),
+                Direction::Right => area.width = area.width.min(10),
+            }
+            fill_bg(buf, area, Nord::bg_lo(self.focused, self.entered));
+            let devices: Vec<&(dyn Render + Send + Sync)> = chain.devices.as_slice()
+                .iter()
+                .map(|d|d as &(dyn Render + Send + Sync))
+                .collect();
+            let (area, areas) = self.direction
+                .split_focus(0, devices.as_slice(), if self.focused {
+                    Style::default().green().dim()
+                } else {
+                    Style::default().dim()
+                })
+                .render_areas(buf, area)?;
+            if self.focused && self.entered && areas.len() > 0 {
+                Corners(Style::default().green().not_dim()).draw(buf, areas[0])?;
+            }
+            Ok(area)
+        } else {
+            let Rect { x, y, width, height } = area;
+            let label = "No chain selected";
+            let x = x + (width - label.len() as u16) / 2;
+            let y = y + height / 2;
+            label.blit(buf, x, y, Some(Style::default().dim().bold()))?;
+            Ok(area)
+        }
+    }
+}