wip: compiles again, after extensive jack rework

crates/app/src/view.rs

@@ -60,7 +60,7 @@ impl App {
             )));
             add(&" ");
             {
-                let cache = self.view_cache.read().unwrap();
+                let cache = self.project.clock.view_cache.read().unwrap();
                 add(&Fixed::x(15, Align::w(Bsp::s(
                     FieldH(theme, "Beat", cache.beat.view.clone()),
                     FieldH(theme, "Time", cache.time.view.clone()),
@@ -90,7 +90,7 @@ impl App {
     }
     pub fn view_status_v (&self) -> impl Content<TuiOut> + use<'_> {
         self.update_clock();
-        let cache   = self.view_cache.read().unwrap();
+        let cache   = self.project.clock.view_cache.read().unwrap();
         let theme   = self.color;
         let playing = self.clock().is_rolling();
         Tui::bg(theme.darker.rgb, Fixed::xy(20, 5, Outer(true, Style::default().fg(Tui::g(96))).enclose(
@@ -120,13 +120,13 @@ impl App {
     }
     pub fn view_status (&self) -> impl Content<TuiOut> + use<'_> {
         self.update_clock();
-        let cache = self.view_cache.read().unwrap();
+        let cache = self.project.clock.view_cache.read().unwrap();
         view_status(Some(self.project.selection.describe(self.tracks(), self.scenes())),
             cache.sr.view.clone(), cache.buf.view.clone(), cache.lat.view.clone())
     }
     pub fn view_transport (&self) -> impl Content<TuiOut> + use<'_> {
         self.update_clock();
-        let cache = self.view_cache.read().unwrap();
+        let cache = self.project.clock.view_cache.read().unwrap();
         view_transport(self.project.clock.is_rolling(),
             cache.bpm.view.clone(), cache.beat.view.clone(), cache.time.view.clone())
     }
@@ -225,122 +225,3 @@ impl ScenesView for App {
         (self.width() as u16).saturating_sub(self.w_side())
     }
 }
-
-/// Clear a pre-allocated buffer, then write into it.
-#[macro_export] macro_rules! rewrite {
-    ($buf:ident, $($rest:tt)*) => { |$buf,_,_|{ $buf.clear(); write!($buf, $($rest)*) } }
-}
-
-#[derive(Debug, Default)] pub(crate) struct ViewMemo<T, U> {
-    pub(crate) value: T,
-    pub(crate) view: Arc<RwLock<U>>
-}
-
-impl<T: PartialEq, U> ViewMemo<T, U> {
-    fn new (value: T, view: U) -> Self {
-        Self { value, view: Arc::new(view.into()) }
-    }
-    pub(crate) fn update <R> (
-        &mut self,
-        newval: T,
-        render: impl Fn(&mut U, &T, &T)->R
-    ) -> Option<R> {
-        if newval != self.value {
-            let result = render(&mut*self.view.write().unwrap(), &newval, &self.value);
-            self.value = newval;
-            return Some(result);
-        }
-        None
-    }
-}
-
-#[derive(Debug)] pub struct ViewCache {
-    pub(crate) sr:   ViewMemo<Option<(bool, f64)>, String>,
-    pub(crate) buf:  ViewMemo<Option<f64>, String>,
-    pub(crate) lat:  ViewMemo<Option<f64>, String>,
-    pub(crate) bpm:  ViewMemo<Option<f64>, String>,
-    pub(crate) beat: ViewMemo<Option<f64>, String>,
-    pub(crate) time: ViewMemo<Option<f64>, String>,
-    pub(crate) scns: ViewMemo<Option<(usize, usize)>, String>,
-    pub(crate) trks: ViewMemo<Option<(usize, usize)>, String>,
-    pub(crate) stop: Arc<str>,
-    pub(crate) edit: Arc<str>,
-}
-
-impl Default for ViewCache {
-    fn default () -> Self {
-        let mut beat = String::with_capacity(16);
-        write!(beat, "{}", Self::BEAT_EMPTY);
-        let mut time = String::with_capacity(16);
-        write!(time, "{}", Self::TIME_EMPTY);
-        let mut bpm  = String::with_capacity(16);
-        write!(bpm,  "{}", Self::BPM_EMPTY);
-        Self {
-            beat: ViewMemo::new(None, beat),
-            time: ViewMemo::new(None, time),
-            bpm:  ViewMemo::new(None, bpm),
-            sr:   ViewMemo::new(None, String::with_capacity(16)),
-            buf:  ViewMemo::new(None, String::with_capacity(16)),
-            lat:  ViewMemo::new(None, String::with_capacity(16)),
-            scns: ViewMemo::new(None, String::with_capacity(16)),
-            trks: ViewMemo::new(None, String::with_capacity(16)),
-            stop: "⏹".into(),
-            edit: "edit".into(),
-        }
-    }
-}
-
-impl ViewCache {
-    pub const BEAT_EMPTY: &'static str = "-.-.--";
-    pub const TIME_EMPTY: &'static str = "-.---s";
-    pub const BPM_EMPTY:  &'static str = "---.---";
-
-    pub fn track_counter (cache: &Arc<RwLock<Self>>, track: usize, tracks: usize)
-        -> Arc<RwLock<String>>
-    {
-        let data = (track, tracks);
-        cache.write().unwrap().trks.update(Some(data), rewrite!(buf, "{}/{}", data.0, data.1));
-        cache.read().unwrap().trks.view.clone()
-    }
-
-    pub fn scene_add (cache: &Arc<RwLock<Self>>, scene: usize, scenes: usize, is_editing: bool)
-        -> impl Content<TuiOut>
-    {
-        let data = (scene, scenes);
-        cache.write().unwrap().scns.update(Some(data), rewrite!(buf, "({}/{})", data.0, data.1));
-        button_3("S", "add scene", cache.read().unwrap().scns.view.clone(), is_editing)
-    }
-
-    pub fn update_clock (cache: &Arc<RwLock<Self>>, clock: &Clock, compact: bool) {
-        let rate  = clock.timebase.sr.get();
-        let chunk = clock.chunk.load(Relaxed) as f64;
-        let lat   = chunk / rate * 1000.;
-        let delta = |start: &Moment|clock.global.usec.get() - start.usec.get();
-        let mut cache = cache.write().unwrap();
-        cache.buf.update(Some(chunk), rewrite!(buf, "{chunk}"));
-        cache.lat.update(Some(lat),   rewrite!(buf, "{lat:.1}ms"));
-        cache.sr.update(Some((compact, rate)), |buf,_,_|{
-            buf.clear();
-            if compact {
-                write!(buf, "{:.1}kHz", rate / 1000.)
-            } else {
-                write!(buf, "{:.0}Hz", rate)
-            }
-        });
-        if let Some(now) = clock.started.read().unwrap().as_ref().map(delta) {
-            let pulse = clock.timebase.usecs_to_pulse(now);
-            let time  = now/1000000.;
-            let bpm   = clock.timebase.bpm.get();
-            cache.beat.update(Some(pulse), |buf, _, _|{
-                buf.clear();
-                clock.timebase.format_beats_1_to(buf, pulse)
-            });
-            cache.time.update(Some(time), rewrite!(buf, "{:.3}s", time));
-            cache.bpm.update(Some(bpm),   rewrite!(buf, "{:.3}",  bpm));
-        } else {
-            cache.beat.update(None, rewrite!(buf, "{}", ViewCache::BEAT_EMPTY));
-            cache.time.update(None, rewrite!(buf, "{}", ViewCache::TIME_EMPTY));
-            cache.bpm.update(None,  rewrite!(buf, "{}", ViewCache::BPM_EMPTY));
-        }
-    }
-}