fix: from review

tracker/gioui/buttons.go

@@ -19,6 +19,7 @@ import (
 	"gioui.org/widget"
 	"gioui.org/widget/material"
 	"gioui.org/x/component"
+
 	"github.com/vsariola/sointu/tracker"
 )
 
@@ -298,7 +299,6 @@ type ButtonStyle struct {
 	Inset        layout.Inset
 	Button       *Clickable
 	shaper       *text.Shaper
-	Hidden       bool
 }
 
 type ButtonLayoutStyle struct {
@@ -363,9 +363,6 @@ func (b ButtonStyle) Layout(gtx layout.Context) layout.Dimensions {
 		CornerRadius: b.CornerRadius,
 		Button:       b.Button,
 	}.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
-		if b.Hidden {
-			return layout.Dimensions{}
-		}
 		return b.Inset.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
 			colMacro := op.Record(gtx.Ops)
 			paint.ColorOp{Color: b.Color}.Add(gtx.Ops)

tracker/gioui/layout.go

@@ -0,0 +1,16 @@
+package gioui
+
+import "gioui.org/layout"
+
+// general helpers for layout that do not belong to any specific widget
+
+func EmptyWidget() layout.Spacer {
+	return layout.Spacer{}
+}
+
+func OnlyIf(condition bool, widget layout.Widget) layout.Widget {
+	if condition {
+		return widget
+	}
+	return EmptyWidget().Layout
+}

tracker/gioui/note_editor.go

@@ -158,7 +158,8 @@ func (te *NoteEditor) layoutButtons(gtx C, t *Tracker) D {
 		deleteTrackBtnStyle := ActionIcon(gtx, t.Theme, te.DeleteTrackBtn, icons.ActionDelete, te.deleteTrackHint)
 		splitTrackBtnStyle := ActionIcon(gtx, t.Theme, te.SplitTrackBtn, icons.CommunicationCallSplit, te.splitTrackHint)
 		newTrackBtnStyle := ActionIcon(gtx, t.Theme, te.NewTrackBtn, icons.ContentAdd, te.addTrackHint)
-		voiceUpDown := NumericUpDownPadded(t.Theme, te.TrackVoices, "Number of voices for this track", 1)
+		voiceUpDown := NumericUpDown(t.Theme, te.TrackVoices, "Number of voices for this track")
+		voiceUpDown.Padding = unit.Dp(1)
 		effectBtnStyle := ToggleButton(gtx, t.Theme, te.EffectBtn, "Hex")
 		uniqueBtnStyle := ToggleIcon(gtx, t.Theme, te.UniqueBtn, icons.ToggleStarBorder, icons.ToggleStar, te.uniqueOffTip, te.uniqueOnTip)
 		midiInBtnStyle := ToggleButton(gtx, t.Theme, te.TrackMidiInBtn, "MIDI")
@@ -175,7 +176,7 @@ func (te *NoteEditor) layoutButtons(gtx C, t *Tracker) D {
 			layout.Rigid(voiceUpDown.Layout),
 			layout.Rigid(splitTrackBtnStyle.Layout),
 			layout.Flexed(1, func(gtx C) D { return layout.Dimensions{Size: gtx.Constraints.Min} }),
-			layout.Rigid(midiInBtnStyle.Layout),
+			layout.Rigid(OnlyIf(t.HasAnyMidiInput(), midiInBtnStyle.Layout)),
 			layout.Flexed(1, func(gtx C) D { return layout.Dimensions{Size: gtx.Constraints.Min} }),
 			layout.Rigid(deleteTrackBtnStyle.Layout),
 			layout.Rigid(newTrackBtnStyle.Layout))

tracker/gioui/numericupdown.go

@@ -50,7 +50,6 @@ type NumericUpDownStyle struct {
 	Height          unit.Dp
 	Padding         unit.Dp
 	shaper          text.Shaper
-	Hidden          bool
 }
 
 func NewNumberInput(v tracker.Int) *NumberInput {
@@ -58,10 +57,6 @@ func NewNumberInput(v tracker.Int) *NumberInput {
 }
 
 func NumericUpDown(th *material.Theme, number *NumberInput, tooltip string) NumericUpDownStyle {
-	return NumericUpDownPadded(th, number, tooltip, 0)
-}
-
-func NumericUpDownPadded(th *material.Theme, number *NumberInput, tooltip string, padding int) NumericUpDownStyle {
 	bgColor := th.Palette.Fg
 	bgColor.R /= 4
 	bgColor.G /= 4
@@ -80,15 +75,12 @@ func NumericUpDownPadded(th *material.Theme, number *NumberInput, tooltip string
 		Tooltip:         Tooltip(th, tooltip),
 		Width:           unit.Dp(70),
 		Height:          unit.Dp(20),
-		Padding:         unit.Dp(padding),
+		Padding:         unit.Dp(0),
 		shaper:          *th.Shaper,
 	}
 }
 
 func (s *NumericUpDownStyle) Layout(gtx C) D {
-	if s.Hidden {
-		return D{}
-	}
 	if s.Padding <= 0 {
 		return s.layoutWithTooltip(gtx)
 	}

tracker/gioui/tracker.go

@@ -164,10 +164,7 @@ func (t *Tracker) Main() {
 func NewWindow() *app.Window {
 	w := new(app.Window)
 	w.Option(app.Title("Sointu Tracker"))
-	w.Option(
-		app.Size(unit.Dp(800), unit.Dp(600)),
-		app.Fullscreen.Option(),
-	)
+	w.Option(app.Size(unit.Dp(800), unit.Dp(600)))
 	return w
 }
 
@@ -350,3 +347,10 @@ func (t *Tracker) removeFromMidiNotePlaying(note byte) {
 		}
 	}
 }
+
+func (t *Tracker) HasAnyMidiInput() bool {
+	for _ = range t.Model.MIDI.InputDevices {
+		return true
+	}
+	return false
+}