separate control layer

crates/tek_tui/src/tui_app_transport.rs

@@ -0,0 +1,56 @@
+use crate::*;
+
+/// Stores and displays time-related info.
+pub struct TransportTui {
+    pub jack:   Arc<RwLock<JackClient>>,
+    pub clock:  ClockModel,
+    pub size:   Measure<Tui>,
+    pub cursor: (usize, usize),
+    pub focus:  FocusState<AppFocus<TransportFocus>>,
+}
+
+/// Create app state from JACK handle.
+impl TryFrom<&Arc<RwLock<JackClient>>> for TransportTui {
+    type Error = Box<dyn std::error::Error>;
+    fn try_from (jack: &Arc<RwLock<JackClient>>) -> Usually<Self> {
+        Ok(Self {
+            jack:   jack.clone(),
+            clock:  ClockModel::from(&Arc::new(jack.read().unwrap().transport())),
+            size:   Measure::new(),
+            cursor: (0, 0),
+            focus:  FocusState::Entered(AppFocus::Content(TransportFocus::Bpm))
+        })
+    }
+}
+
+/// Which item of the transport toolbar is focused
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub enum TransportFocus {
+    Bpm,
+    Sync,
+    PlayPause,
+    Clock,
+    Quant,
+}
+
+impl FocusWrap<TransportFocus> for TransportFocus {
+    fn wrap <'a, W: Widget<Engine = Tui>> (self, focus: TransportFocus, content: &'a W)
+        -> impl Widget<Engine = Tui> + 'a
+    {
+        let focused   = focus == self;
+        let corners   = focused.then_some(CORNERS);
+        let highlight = focused.then_some(Background(Color::Rgb(60, 70, 50)));
+        lay!(corners, highlight, *content)
+    }
+}
+
+impl FocusWrap<TransportFocus> for Option<TransportFocus> {
+    fn wrap <'a, W: Widget<Engine = Tui>> (self, focus: TransportFocus, content: &'a W)
+        -> impl Widget<Engine = Tui> + 'a
+    {
+        let focused   = Some(focus) == self;
+        let corners   = focused.then_some(CORNERS);
+        let highlight = focused.then_some(Background(Color::Rgb(60, 70, 50)));
+        lay!(corners, highlight, *content)
+    }
+}