somewhat working ui

crates/ui/src/app.rs

@@ -1,3 +1,4 @@
+use crossbeam_channel::Sender;
 use params::{ParamId, ParamStore};
 use vizia::prelude::*;
 
@@ -6,6 +7,13 @@ use crate::widgets::piano::PianoKeyboard;
 pub const MOD_NSRC: usize = 19;
 pub const MOD_NDST: usize = 11;
 
+#[derive(Clone, Copy, Debug)]
+pub enum MidiMsg {
+    NoteOn(u8, u8),
+    NoteOff(u8),
+    AllNotesOff,
+}
+
 #[derive(Clone, Copy, Debug, PartialEq, Data)]
 pub enum Panel {
     Voice,
@@ -41,10 +49,12 @@ pub struct AppData {
     pub active_env: usize,
     pub active_lfo: usize,
     pub fx_selected: usize,
+    #[lens(ignore)]
+    pub midi_tx: Sender<MidiMsg>,
 }
 
 impl AppData {
-    pub fn new(store: ParamStore) -> Self {
+    pub fn new(store: ParamStore, midi_tx: Sender<MidiMsg>) -> Self {
         let params = (0..ParamId::COUNT)
             .map(|i| store.get(unsafe { std::mem::transmute::<usize, ParamId>(i) }))
             .collect();
@@ -63,6 +73,7 @@ impl AppData {
             active_env: 0,
             active_lfo: 0,
             fx_selected: 0,
+            midi_tx,
         }
     }
 }
@@ -96,34 +107,45 @@ impl Model for AppData {
                 self.params[*id as usize] = *val;
                 self.store.set(*id, *val);
             }
+
             AppEvent::SetPanel(p) => self.active_panel = *p,
+            AppEvent::SelectEnv(i) => self.active_env = *i,
+            AppEvent::SelectLfo(i) => self.active_lfo = *i,
+            AppEvent::SelectFx(i) => self.fx_selected = *i,
+
             AppEvent::UpdateMetrics { voices, cpu } => {
                 self.voice_count = *voices;
                 self.cpu_load = *cpu;
             }
-            AppEvent::NoteOn(note, _) => {
+
+            AppEvent::NoteOn(note, vel) => {
                 if !self.held_notes.contains(note) {
                     self.held_notes.push(*note);
                 }
+                let _ = self.midi_tx.try_send(MidiMsg::NoteOn(*note, *vel));
             }
-            AppEvent::NoteOff(note) => self.held_notes.retain(|n| n != note),
+            AppEvent::NoteOff(note) => {
+                self.held_notes.retain(|n| n != note);
+                let _ = self.midi_tx.try_send(MidiMsg::NoteOff(*note));
+            }
+
             AppEvent::OctaveUp => self.octave = (self.octave + 1).min(8),
             AppEvent::OctaveDown => self.octave = (self.octave - 1).max(0),
+
             AppEvent::SetModDepth { src, dst, depth } => {
                 let idx = src * MOD_NDST + dst;
                 if idx < self.mod_depths.len() {
                     self.mod_depths[idx] = depth.clamp(-1.0, 1.0);
                 }
             }
+
             AppEvent::ToggleFx(s) => {
                 if *s < self.fx_enabled.len() {
                     self.fx_enabled[*s] = !self.fx_enabled[*s];
                 }
             }
-            AppEvent::SelectEnv(i) => self.active_env = *i,
-            AppEvent::SelectLfo(i) => self.active_lfo = *i,
-            AppEvent::SelectFx(i) => self.fx_selected = *i,
         });
+
         event.map(|we: &WindowEvent, _| {
             crate::widgets::piano::handle_kbd(cx, we, self.octave);
         });
@@ -158,3 +180,14 @@ pub fn build_root(cx: &mut Context) {
     .width(Stretch(1.0))
     .height(Stretch(1.0));
 }
+
+fn tab_button(cx: &mut Context, p: Panel) {
+    Binding::new(cx, AppData::active_panel, move |cx, active_lens| {
+        let active = active_lens.get(cx) == p;
+        Label::new(cx, p.label())
+            .class("top-tab")
+            .checked(active)
+            .on_press(move |cx| cx.emit(AppEvent::SetPanel(p)))
+            .height(Stretch(1.0));
+    });
+}