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feat(tracker): rework the MIDI input and note event handling

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This commit is contained in:
5684185+vsariola@users.noreply.github.com
2025-06-03 20:03:22 +03:00
parent 7ef868a434
commit 283fbc1171
19 changed files with 428 additions and 500 deletions
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85
tracker/gioui/note_editor.go
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@ -114,6 +114,10 @@ func NewNoteEditor(model *tracker.Model) *NoteEditor {
return ret
}
func (te *NoteEditor) Focused(gtx C) bool {
return te.scrollTable.Focused(gtx) || te.scrollTable.ChildFocused(gtx)
}
func (te *NoteEditor) Layout(gtx layout.Context, t *Tracker) layout.Dimensions {
for {
e, ok := gtx.Event(te.eventFilters...)
@ -123,20 +127,30 @@ func (te *NoteEditor) Layout(gtx layout.Context, t *Tracker) layout.Dimensions {
switch e := e.(type) {
case key.Event:
if e.State == key.Release {
if noteID, ok := t.KeyPlaying[e.Name]; ok {
noteID.NoteOff()
delete(t.KeyPlaying, e.Name)
}
t.KeyNoteMap.Release(e.Name)
continue
}
te.command(t, e)
}
}
for te.Focused(gtx) && len(t.noteEvents) > 0 {
ev := t.noteEvents[0]
ev.IsTrack = true
ev.Channel = t.Model.Notes().Cursor().X
ev.Source = te
if ev.On {
t.Model.Notes().Input(ev.Note)
}
copy(t.noteEvents, t.noteEvents[1:])
t.noteEvents = t.noteEvents[:len(t.noteEvents)-1]
tracker.TrySend(t.Broker().ToPlayer, any(ev))
}
defer op.Offset(image.Point{}).Push(gtx.Ops).Pop()
defer clip.Rect(image.Rect(0, 0, gtx.Constraints.Max.X, gtx.Constraints.Max.Y)).Push(gtx.Ops).Pop()
return Surface{Gray: 24, Focus: te.scrollTable.Focused()}.Layout(gtx, func(gtx C) D {
return Surface{Gray: 24, Focus: te.scrollTable.Focused(gtx)}.Layout(gtx, func(gtx C) D {
return layout.Flex{Axis: layout.Vertical}.Layout(gtx,
layout.Rigid(func(gtx C) D {
return te.layoutButtons(gtx, t)
@ -149,7 +163,7 @@ func (te *NoteEditor) Layout(gtx layout.Context, t *Tracker) layout.Dimensions {
}
func (te *NoteEditor) layoutButtons(gtx C, t *Tracker) D {
return Surface{Gray: 37, Focus: te.scrollTable.Focused() || te.scrollTable.ChildFocused()}.Layout(gtx, func(gtx C) D {
return Surface{Gray: 37, Focus: te.scrollTable.Focused(gtx) || te.scrollTable.ChildFocused(gtx)}.Layout(gtx, func(gtx C) D {
addSemitoneBtnStyle := ActionButton(gtx, t.Theme, &t.Theme.Button.Text, te.AddSemitoneBtn, "+1")
subtractSemitoneBtnStyle := ActionButton(gtx, t.Theme, &t.Theme.Button.Text, te.SubtractSemitoneBtn, "-1")
addOctaveBtnStyle := ActionButton(gtx, t.Theme, &t.Theme.Button.Text, te.AddOctaveBtn, "+12")
@ -276,7 +290,7 @@ func (te *NoteEditor) layoutTracks(gtx C, t *Tracker) D {
point := tracker.Point{X: x, Y: y}
if drawSelection && selection.Contains(point) {
color := t.Theme.Selection.Inactive
if te.scrollTable.Focused() {
if te.scrollTable.Focused(gtx) {
color = t.Theme.Selection.Active
}
paint.FillShape(gtx.Ops, color, clip.Rect{Min: image.Pt(0, 0), Max: image.Pt(gtx.Constraints.Min.X, gtx.Constraints.Min.Y)}.Op())
@ -284,7 +298,7 @@ func (te *NoteEditor) layoutTracks(gtx C, t *Tracker) D {
// draw the cursor
if point == cursor {
c := t.Theme.Cursor.Inactive
if te.scrollTable.Focused() {
if te.scrollTable.Focused(gtx) {
c = t.Theme.Cursor.Active
}
if hasTrackMidiIn {
@ -292,14 +306,6 @@ func (te *NoteEditor) layoutTracks(gtx C, t *Tracker) D {
}
te.paintColumnCell(gtx, x, t, c)
}
// draw the corresponding "fake cursors" for instrument-track-groups (for polyphony)
if hasTrackMidiIn {
for _, trackIndex := range t.Model.TracksWithSameInstrumentAsCurrent() {
if x == trackIndex && y == cursor.Y {
te.paintColumnCell(gtx, x, t, t.Theme.Selection.ActiveAlt)
}
}
}
// draw the pattern marker
rpp := max(t.RowsPerPattern().Value(), 1)
@ -366,9 +372,8 @@ func (te *NoteEditor) command(t *Tracker, e key.Event) {
var n byte
if t.Model.Notes().Effect(te.scrollTable.Table.Cursor().X) {
if nibbleValue, err := strconv.ParseInt(string(e.Name), 16, 8); err == nil {
t.Model.Notes().FillNibble(byte(nibbleValue), t.Model.Notes().LowNibble())
n = t.Model.Notes().Value(te.scrollTable.Table.Cursor())
te.finishNoteInsert(t, n, e.Name)
ev := t.Model.Notes().InputNibble(byte(nibbleValue))
t.KeyNoteMap.Press(e.Name, ev)
}
} else {
action, ok := keyBindingMap[e]
@ -376,8 +381,8 @@ func (te *NoteEditor) command(t *Tracker, e key.Event) {
return
}
if action == "NoteOff" {
t.Model.Notes().Table().Fill(0)
te.finishNoteInsert(t, 0, "")
ev := t.Model.Notes().Input(0)
t.KeyNoteMap.Press(e.Name, ev)
return
}
if action[:4] == "Note" {
@ -386,42 +391,8 @@ func (te *NoteEditor) command(t *Tracker, e key.Event) {
return
}
n = noteAsValue(t.OctaveNumberInput.Int.Value(), val-12)
t.Model.Notes().Table().Fill(int(n))
te.finishNoteInsert(t, n, e.Name)
ev := t.Model.Notes().Input(n)
t.KeyNoteMap.Press(e.Name, ev)
}
}
}
func (te *NoteEditor) finishNoteInsert(t *Tracker, note byte, keyName key.Name) {
if step := t.Model.Step().Value(); step > 0 {
te.scrollTable.Table.MoveCursor(0, step)
te.scrollTable.Table.SetCursor2(te.scrollTable.Table.Cursor())
}
te.scrollTable.EnsureCursorVisible()
if keyName == "" {
return
}
if _, ok := t.KeyPlaying[keyName]; !ok {
trk := te.scrollTable.Table.Cursor().X
t.KeyPlaying[keyName] = t.TrackNoteOn(trk, note)
}
}
func (te *NoteEditor) HandleMidiInput(t *Tracker) {
inputDeactivated := !t.Model.TrackMidiIn().Value()
if inputDeactivated {
return
}
te.scrollTable.Table.SetCursor2(te.scrollTable.Table.Cursor())
remaining := t.Model.CountNextTracksForCurrentInstrument()
for i, note := range t.MidiNotePlaying {
t.Model.Notes().Table().Set(note)
te.scrollTable.Table.MoveCursor(1, 0)
te.scrollTable.EnsureCursorVisible()
if i >= remaining {
break
}
}
te.scrollTable.Table.SetCursor(te.scrollTable.Table.Cursor2())
}