refactor(go): Move everything from go4k to root package sointu

tracker/layout.go

@@ -0,0 +1,37 @@
+package tracker
+
+import (
+	"gioui.org/layout"
+)
+
+func (t *Tracker) Layout(gtx layout.Context) {
+	layout.Flex{Axis: layout.Vertical}.Layout(gtx,
+		layout.Rigid(t.layoutControls),
+		layout.Flexed(1, Lowered(t.layoutTracker)),
+	)
+}
+
+func (t *Tracker) layoutTracker(gtx layout.Context) layout.Dimensions {
+	flexTracks := make([]layout.FlexChild, len(t.song.Tracks))
+	for i, trk := range t.song.Tracks {
+		flexTracks[i] = layout.Rigid(Lowered(t.layoutTrack(
+			t.song.Patterns[trk.Sequence[t.DisplayPattern]],
+			t.ActiveTrack == i,
+			t.CursorRow,
+			t.CursorColumn,
+			int(t.PlayRow),
+		)))
+	}
+	return layout.Flex{Axis: layout.Horizontal}.Layout(gtx,
+		flexTracks...,
+	)
+}
+
+func (t *Tracker) layoutControls(gtx layout.Context) layout.Dimensions {
+	gtx.Constraints.Min.Y = 400
+	gtx.Constraints.Max.Y = 400
+	return layout.Stack{Alignment: layout.NW}.Layout(gtx,
+		layout.Expanded(t.QuitButton.Layout),
+		layout.Stacked(Raised(Label("Hello", white))),
+	)
+}