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feat(tracker, gioui): add the ability to reorder / drag tracks in order list

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This commit is contained in:
vsariola 2021-04-24 22:47:45 +03:00
parent 442715334e
commit 5aa16b4a97
2 changed files with 23 additions and 7 deletions
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19
tracker/gioui/ordereditor.go
View File

@ -25,6 +25,7 @@ const patternRowMarkerWidth = 30
type OrderEditor struct {
list *layout.List
titleList *DragList
scrollBar *ScrollBar
tag bool
focused bool
@ -34,6 +35,7 @@ type OrderEditor struct {
func NewOrderEditor() *OrderEditor {
return &OrderEditor{
list: &layout.List{Axis: layout.Vertical},
titleList: &DragList{List: &layout.List{Axis: layout.Horizontal}},
scrollBar: &ScrollBar{Axis: layout.Vertical},
}
}
@ -169,22 +171,25 @@ func (oe *OrderEditor) doLayout(gtx C, t *Tracker) D {
// draw the single letter titles for tracks
{
gtx := gtx
curVoice := 0
stack := op.Save(gtx.Ops)
op.Offset(f32.Pt(patternRowMarkerWidth, 0)).Add(gtx.Ops)
gtx.Constraints = layout.Exact(image.Pt(patternCellWidth, patternCellHeight))
for _, track := range t.Song().Score.Tracks {
instr, err := t.Song().Patch.InstrumentForVoice(curVoice)
gtx.Constraints = layout.Exact(image.Pt(gtx.Constraints.Max.X-patternRowMarkerWidth, patternCellHeight))
elem := func(gtx C, i int) D {
gtx.Constraints = layout.Exact(image.Pt(patternCellWidth, patternCellHeight))
instr, err := t.Song().Patch.InstrumentForVoice(t.Song().Score.FirstVoiceForTrack(i))
var title string
if err == nil && len(t.Song().Patch[instr].Name) > 0 {
title = string(t.Song().Patch[instr].Name[0])
} else {
title = "I"
title = "?"
}
LabelStyle{Alignment: layout.N, Text: title, FontSize: unit.Dp(12), Color: mediumEmphasisTextColor}.Layout(gtx)
op.Offset(f32.Pt(patternCellWidth, 0)).Add(gtx.Ops)
curVoice += track.NumVoices
return D{Size: gtx.Constraints.Min}
}
style := FilledDragList(t.Theme, oe.titleList, len(t.Song().Score.Tracks), elem, t.SwapTracks)
style.HoverColor = transparent
style.SelectedColor = transparent
style.Layout(gtx)
stack.Load()
}
op.Offset(f32.Pt(0, patternCellHeight)).Add(gtx.Ops)

11
tracker/model.go
View File

@ -245,6 +245,17 @@ func (m *Model) CanDeleteTrack() bool {
return len(m.song.Score.Tracks) > 1
}
func (m *Model) SwapTracks(i, j int) {
if i < 0 || j < 0 || i >= len(m.song.Score.Tracks) || j >= len(m.song.Score.Tracks) || i == j {
return
}
m.saveUndo("SwapTracks", 10)
tracks := m.song.Score.Tracks
tracks[i], tracks[j] = tracks[j], tracks[i]
m.clampPositions()
m.notifyScoreChange()
}
func (m *Model) SetTrackVoices(value int) {
if value < 1 {
value = 1