save shuffle state in config

backend/config.go

@@ -123,6 +123,7 @@ type NowPlayingPageConfig struct {
 
 type PlaybackConfig struct {
 	Autoplay                 bool
+	Shuffle                  bool
 	RepeatMode               string
 	SkipOneStarWhenShuffling bool
 	SkipKeywordWhenShuffling string
@@ -259,6 +260,7 @@ func DefaultConfig(appVersionTag string) *Config {
 		},
 		Playback: PlaybackConfig{
 			Autoplay:           false,
+			Shuffle:            false,
 			RepeatMode:         "None",
 			UseWaveformSeekbar: true,
 		},

backend/playbackengine.go

@@ -355,10 +355,6 @@ func (p *playbackEngine) SetShuffle(shuffle bool) {
 	p.invokeNoArgCallbacks(p.onQueueChange)
 }
 
-func (p *playbackEngine) GetShuffle() bool {
-	return p.shuffle
-}
-
 func (p *playbackEngine) PlaybackStatus() PlaybackStatus {
 	stat := p.pendingPlayerChangeStatus
 	if !p.pendingPlayerChange {

backend/playbackmanager.go

@@ -368,8 +368,8 @@ func (p *PlaybackManager) LoadAlbum(albumID string, insertQueueMode InsertQueueM
 	return nil
 }
 
-func (p *PlaybackManager) GetShuffle() bool {
+func (p *PlaybackManager) IsShuffle() bool {
-	return p.engine.GetShuffle()
+	return p.cfg.Shuffle
 }
 
 // Loads the specified playlist into the play queue.
@@ -639,6 +639,8 @@ func (p *PlaybackManager) SetAutoplay(autoplay bool) {
 }
 
 func (p *PlaybackManager) SetShuffle(shuffle bool) {
+	p.cfg.Shuffle = shuffle
+	fmt.Println("Setting shuffle in config")
 	p.engine.SetShuffle(shuffle)
 }
 

ui/bottompanel.go

@@ -101,7 +101,7 @@ func NewBottomPanel(pm *backend.PlaybackManager, im *backend.ImageManager, contr
 		pm.SeekFraction(f)
 	})
 
-	bp.AuxControls = widgets.NewAuxControls(pm.Volume(), pm.GetLoopMode(), pm.IsAutoplay())
+	bp.AuxControls = widgets.NewAuxControls(pm.Volume(), pm.GetLoopMode(), pm.IsAutoplay(), pm.IsShuffle())
 	pm.OnLoopModeChange(func(lm backend.LoopMode) {
 		fyne.Do(func() { bp.AuxControls.SetLoopMode(lm) })
 	})

ui/widgets/auxcontrols.go

@@ -34,7 +34,7 @@ type AuxControls struct {
 	container *fyne.Container
 }
 
-func NewAuxControls(initialVolume int, initialLoopMode backend.LoopMode, initialAutoplay bool) *AuxControls {
+func NewAuxControls(initialVolume int, initialLoopMode backend.LoopMode, initialAutoplay bool, initialShuffle bool) *AuxControls {
 	a := &AuxControls{
 		VolumeControl: NewVolumeControl(initialVolume),
 		shuffle:       NewIconButton(myTheme.ShuffleIcon, nil),
@@ -44,6 +44,7 @@ func NewAuxControls(initialVolume int, initialLoopMode backend.LoopMode, initial
 		showQueue:     NewIconButton(myTheme.PlayQueueIcon, nil),
 	}
 
+	a.shuffle.Highlighted = initialShuffle
 	a.shuffle.IconSize = IconButtonSizeSmaller
 	a.shuffle.SetToolTip(lang.L("Shuffle"))
 	a.shuffle.OnTapped = func() {