feat(tracker): ability to bind MIDI controllers to parameters

Closes #152

tracker/gioui/keybindings.go

@@ -287,6 +287,12 @@ func (t *Tracker) KeyEvent(e key.Event, gtx C) {
 		t.MIDI().Refresh().Do()
 	case "ToggleMIDIInputtingNotes":
 		t.MIDI().InputtingNotes().Toggle()
+	case "ToggleMIDIBinding":
+		t.MIDI().Binding().Toggle()
+	case "MIDIUnbind":
+		t.MIDI().Unbind().Do()
+	case "MIDIUnbindAll":
+		t.MIDI().UnbindAll().Do()
 	default:
 		if len(action) > 4 && action[:4] == "Note" {
 			val, err := strconv.Atoi(string(action[4:]))

tracker/gioui/keybindings.yml

@@ -28,6 +28,9 @@
 - { key: "E", shortcut: true, action: "InstrEnlargedToggle" }
 - { key: "K", shortcut: true, action: "LinkInstrTrackToggle" }
 - { key: "W", shortcut: true, action: "Quit" }
+- { key: "B", shortcut: true, action: "ToggleMIDIBinding" }
+- { key: "U", shortcut: true, action: "MIDIUnbind" }
+- { key: "U", shortcut: true, shift: true, action: "MIDIUnbindAll" }
 - { key: "Space", action: "PlayingToggleUnfollow" }
 - { key: "Space", shift: true, action: "PlayingToggleFollow" }
 - { key: "F1", action: "OrderEditorFocus" }

tracker/gioui/keyboard.go

@@ -32,7 +32,7 @@ func (t *Keyboard[T]) Press(key T, ev tracker.NoteEvent) {
 		ev.Source = t // set the source to this keyboard
 		ev.On = true
 		ev.Timestamp = t.now()
-		if tracker.TrySend(t.broker.ToPlayer, any(ev)) {
+		if tracker.TrySend(t.broker.ToPlayer, any(&ev)) {
 			t.pressed[key] = ev
 		}
 	}
@@ -42,7 +42,7 @@ func (t *Keyboard[T]) Release(key T) {
 	if ev, ok := t.pressed[key]; ok {
 		ev.Timestamp = t.now()
 		ev.On = false // the pressed contains the event we need to send to release the note
-		tracker.TrySend(t.broker.ToPlayer, any(ev))
+		tracker.TrySend(t.broker.ToPlayer, any(&ev))
 		delete(t.pressed, key)
 	}
 }

tracker/gioui/note_editor.go

@@ -144,7 +144,7 @@ func (te *NoteEditor) Layout(gtx layout.Context) layout.Dimensions {
 		}
 		copy(t.noteEvents, t.noteEvents[1:])
 		t.noteEvents = t.noteEvents[:len(t.noteEvents)-1]
-		tracker.TrySend(t.Broker().ToPlayer, any(ev))
+		tracker.TrySend(t.Broker().ToPlayer, any(&ev))
 	}
 
 	defer clip.Rect(image.Rect(0, 0, gtx.Constraints.Max.X, gtx.Constraints.Max.Y)).Push(gtx.Ops).Pop()

tracker/gioui/song_panel.go

@@ -508,9 +508,13 @@ func (t *MenuBar) Layout(gtx C) D {
 	midiBtn := MenuBtn(&t.MenuStates[2], &t.Clickables[2], "MIDI")
 	midiFC := layout.Rigid(func(gtx C) D {
 		return midiBtn.Layout(gtx,
-			ActionMenuChild(tr.MIDI().Refresh(), "Refresh port list", keyActionMap["MIDIRefresh"], icons.NavigationRefresh),
-			BoolMenuChild(tr.MIDI().InputtingNotes(), "Use for note input", keyActionMap["ToggleMIDIInputtingNotes"], icons.NavigationCheck),
+			BoolMenuChild(tr.MIDI().Binding(), "Bind to controller", keyActionMap["ToggleMIDIBinding"], icons.NavigationCheck),
+			ActionMenuChild(tr.MIDI().Unbind(), "Unbind", keyActionMap["MIDIUnbind"], icons.ImageLeakRemove),
+			ActionMenuChild(tr.MIDI().UnbindAll(), "Unbind all", keyActionMap["MIDIUnbindAll"], icons.ImageLeakRemove),
 			DividerMenuChild(),
+			BoolMenuChild(tr.MIDI().InputtingNotes(), "Input notes", keyActionMap["ToggleMIDIInputtingNotes"], icons.NavigationCheck),
+			DividerMenuChild(),
+			ActionMenuChild(tr.MIDI().Refresh(), "Refresh", keyActionMap["MIDIRefresh"], icons.NavigationRefresh),
 			IntMenuChild(tr.MIDI().Input(), icons.NavigationCheck),
 		)
 	})

tracker/gioui/theme.yml

@@ -156,7 +156,7 @@ menu:
     shortcut: { textsize: 16, color: *mediumemphasis, shadowcolor: *black }
     hover: { r: 100, g: 140, b: 255, a: 48 }
     disabled: *disabled
-    width: 200
+    width: 240
     height: 300
   preset:
     text: { textsize: 16, color: *highemphasis, shadowcolor: *black }

tracker/gioui/tracker.go

@@ -145,8 +145,8 @@ func (t *Tracker) Main() {
 			select {
 			case e := <-t.Broker().ToGUI:
 				switch e := e.(type) {
-				case tracker.NoteEvent:
-					t.noteEvents = append(t.noteEvents, e)
+				case *tracker.NoteEvent:
+					t.noteEvents = append(t.noteEvents, *e)
 				case tracker.MsgToGUI:
 					switch e.Kind {
 					case tracker.GUIMessageCenterOnRow:
@@ -274,7 +274,7 @@ func (t *Tracker) Layout(gtx layout.Context) {
 		ev.Source = t
 		copy(t.noteEvents, t.noteEvents[1:])
 		t.noteEvents = t.noteEvents[:len(t.noteEvents)-1]
-		tracker.TrySend(t.Broker().ToPlayer, any(ev))
+		tracker.TrySend(t.Broker().ToPlayer, any(&ev))
 	}
 }