Merge pull request #17 from dweymouth/develop

Add album page with track listing

backend/albumiterator.go

@@ -15,14 +15,14 @@ type AlbumIterator interface {
 
 type LibraryManager struct {
 	s                *ServerManager
-	albumCache gcache.Cache
+	albumDetailCache gcache.Cache
 }
 
 func NewLibraryManager(s *ServerManager) *LibraryManager {
 	cache := gcache.New(250).LRU().Build()
 	return &LibraryManager{
 		s:                s,
-		albumCache: cache,
+		albumDetailCache: cache,
 	}
 }
 
@@ -77,12 +77,12 @@ func (l *LibraryManager) SearchIter(query string) AlbumIterator {
 }
 
 func (l *LibraryManager) CacheAlbum(a *subsonic.AlbumID3) {
-	l.albumCache.Set(a.ID, a)
+	l.albumDetailCache.Set(a.ID, a)
 }
 
 func (l *LibraryManager) GetAlbum(id string) (*subsonic.AlbumID3, error) {
-	if l.albumCache.Has(id) {
-		if a, err := l.albumCache.Get(id); err == nil {
+	if l.albumDetailCache.Has(id) {
+		if a, err := l.albumDetailCache.Get(id); err == nil {
 			return a.(*subsonic.AlbumID3), nil
 		}
 	}
@@ -90,7 +90,7 @@ func (l *LibraryManager) GetAlbum(id string) (*subsonic.AlbumID3, error) {
 	if err != nil {
 		return nil, err
 	}
-	l.albumCache.Set(a.ID, a)
+	l.albumDetailCache.Set(a.ID, a)
 	return a, nil
 }
 
@@ -126,7 +126,6 @@ func (r *baseIter) Next() *subsonic.AlbumID3 {
 		}
 		r.pos++
 
-		r.l.CacheAlbum(a)
 		return a
 	}
 	albums, err := r.s.GetAlbumList2(r.listType, map[string]string{"size": "20", "offset": strconv.Itoa(r.pos)})
@@ -138,14 +137,12 @@ func (r *baseIter) Next() *subsonic.AlbumID3 {
 		r.done = true
 		return nil
 	} else if len(albums) == 1 {
-		r.l.CacheAlbum(albums[0])
 		r.done = true
 		return albums[0]
 	}
 	r.prefetched = albums
 	r.prefetchedPos = 1
 
-	r.l.CacheAlbum(r.prefetched[0])
 	return r.prefetched[0]
 }
 
@@ -239,7 +236,6 @@ func (s *searchIter) Next() *subsonic.AlbumID3 {
 			s.prefetchedPos = 0
 		}
 
-		s.l.CacheAlbum(a)
 		return a
 	}
 
@@ -349,7 +345,6 @@ func (r *randomIter) Next() *subsonic.AlbumID3 {
 			r.prefetchedPos = 0
 		}
 
-		r.l.CacheAlbum(a)
 		return a
 	}
 

backend/playbackmanager.go

@@ -124,11 +124,14 @@ func (p *PlaybackManager) LoadAlbum(albumID string, appendToQueue bool) error {
 	return nil
 }
 
-func (p *PlaybackManager) PlayAlbum(albumID string) error {
+func (p *PlaybackManager) PlayAlbum(albumID string, firstTrack int) error {
 	if err := p.LoadAlbum(albumID, false); err != nil {
 		return err
 	}
+	if firstTrack <= 0 {
 		return p.player.PlayFromBeginning()
+	}
+	return p.player.PlayTrackAt(firstTrack)
 }
 
 func (p *PlaybackManager) checkScrobble(playDur time.Duration) {

player/player.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"strconv"
 
 	"github.com/wildeyedskies/go-mpv/mpv"
 )
@@ -226,6 +227,15 @@ func (p *Player) PlayFromBeginning() error {
 	return err
 }
 
+// Start playback from the specified track index in the play queue.
+func (p *Player) PlayTrackAt(idx int) error {
+	err := p.mpv.Command([]string{"playlist-play-index", strconv.Itoa(idx)})
+	if err == nil {
+		p.setState(Playing)
+	}
+	return err
+}
+
 // Begins playback if there is anything in the play queue and player is stopped or paused.
 // If player is playing, pauses playback.
 func (p *Player) PlayPause() error {

ui/albumgrid.go

@@ -26,6 +26,7 @@ type AlbumGrid struct {
 
 	imageFetcher     ImageFetcher
 	OnPlayAlbum      func(string)
+	OnShowAlbumPage  func(string)
 	OnShowArtistPage func(string)
 }
 
@@ -88,6 +89,11 @@ func (ag *AlbumGrid) createGridWrapList() {
 					ag.OnShowArtistPage(ac.ArtistID())
 				}
 			}
+			ac.OnShowAlbumPage = func() {
+				if ag.OnShowAlbumPage != nil {
+					ag.OnShowAlbumPage(ac.AlbumID())
+				}
+			}
 			return ac
 		},
 		// update func

ui/albumpage.go

@@ -0,0 +1,68 @@
+package ui
+
+import (
+	"log"
+	"supersonic/backend"
+	"supersonic/ui/widgets"
+
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/layout"
+	"fyne.io/fyne/v2/theme"
+	"fyne.io/fyne/v2/widget"
+)
+
+type AlbumPage struct {
+	widget.BaseWidget
+
+	albumID   string
+	im        *backend.ImageManager
+	lm        *backend.LibraryManager
+	titleDisp *widget.RichText
+	tracklist *widgets.Tracklist
+	container *fyne.Container
+
+	OnPlayAlbum func(string, int)
+}
+
+func NewAlbumPage(albumID string, lm *backend.LibraryManager) *AlbumPage {
+	a := &AlbumPage{albumID: albumID, lm: lm}
+	a.ExtendBaseWidget(a)
+	a.titleDisp = widget.NewRichTextWithText("Artist")
+	a.titleDisp.Segments[0].(*widget.TextSegment).Style = widget.RichTextStyle{
+		SizeName: theme.SizeNameHeadingText,
+	}
+	a.container = container.NewBorder(a.titleDisp, nil, nil, nil, layout.NewSpacer())
+	a.loadAsync()
+	return a
+}
+
+func (a *AlbumPage) CreateRenderer() fyne.WidgetRenderer {
+	return widget.NewSimpleRenderer(a.container)
+}
+
+func (a *AlbumPage) SetPlayAlbumCallback(cb func(string, int)) {
+	a.OnPlayAlbum = cb
+}
+
+func (a *AlbumPage) onPlayTrackAt(tracknum int) {
+	if a.OnPlayAlbum != nil {
+		a.OnPlayAlbum(a.albumID, tracknum)
+	}
+}
+
+func (a *AlbumPage) loadAsync() {
+	go func() {
+		album, err := a.lm.GetAlbum(a.albumID)
+		if err != nil {
+			log.Printf("Failed to get album: %s", err.Error())
+			return
+		}
+		a.titleDisp.Segments[0].(*widget.TextSegment).Text = album.Name
+		a.titleDisp.Refresh()
+		tl := widgets.NewTracklist(album.Song)
+		tl.OnPlayTrackAt = a.onPlayTrackAt
+		a.container.Objects[0] = tl
+		a.container.Refresh()
+	}()
+}

ui/albumspage.go

@@ -25,7 +25,7 @@ type AlbumsPage struct {
 	titleDisp   *widget.RichText
 	sortOrder   *selectWidget
 	container   *fyne.Container
-	OnPlayAlbum func(string)
+	OnPlayAlbum func(string, int)
 }
 
 type selectWidget struct {
@@ -69,6 +69,7 @@ func NewAlbumsPage(title string, sortOrder string, lm *backend.LibraryManager, i
 	a.grid = NewAlbumGrid(iter, im.GetAlbumThumbnail, false /*showYear*/)
 	a.grid.OnPlayAlbum = a.onPlayAlbum
 	a.grid.OnShowArtistPage = a.onShowArtistPage
+	a.grid.OnShowAlbumPage = a.onShowAlbumPage
 	a.container = container.NewBorder(
 		container.NewHBox(widgets.NewHSpace(15), a.titleDisp, sortVbox),
 		nil,
@@ -100,13 +101,13 @@ func (a *AlbumsPage) OnSearched(query string) {
 	a.Refresh()
 }
 
-func (a *AlbumsPage) SetPlayAlbumCallback(cb func(string)) {
+func (a *AlbumsPage) SetPlayAlbumCallback(cb func(string, int)) {
 	a.OnPlayAlbum = cb
 }
 
 func (a *AlbumsPage) onPlayAlbum(albumID string) {
 	if a.OnPlayAlbum != nil {
-		a.OnPlayAlbum(albumID)
+		a.OnPlayAlbum(albumID, 0)
 	}
 }
 
@@ -114,6 +115,10 @@ func (a *AlbumsPage) onShowArtistPage(artistID string) {
 	a.nav(ArtistRoute(artistID))
 }
 
+func (a *AlbumsPage) onShowAlbumPage(albumID string) {
+	a.nav(AlbumRoute(albumID))
+}
+
 func (a *AlbumsPage) onSortOrderChanged(order string) {
 	a.grid.Reset(a.lm.AlbumsIter(backend.AlbumSortOrder(order)))
 	if a.searchText == "" {

ui/artistpage.go

@@ -19,17 +19,20 @@ type ArtistPage struct {
 	artistID  string
 	im        *backend.ImageManager
 	sm        *backend.ServerManager
+	nav       func(Route)
 	grid      *AlbumGrid
 	titleDisp *widget.RichText
 	container *fyne.Container
-	OnPlayAlbum func(string)
+
+	OnPlayAlbum func(string, int)
 }
 
-func NewArtistPage(artistID string, sm *backend.ServerManager, im *backend.ImageManager) *ArtistPage {
+func NewArtistPage(artistID string, sm *backend.ServerManager, im *backend.ImageManager, nav func(Route)) *ArtistPage {
 	a := &ArtistPage{
 		artistID: artistID,
 		sm:       sm,
 		im:       im,
+		nav:      nav,
 	}
 	a.ExtendBaseWidget(a)
 	a.titleDisp = widget.NewRichTextWithText("Artist")
@@ -41,16 +44,20 @@ func NewArtistPage(artistID string, sm *backend.ServerManager, im *backend.Image
 	return a
 }
 
-func (a *ArtistPage) SetPlayAlbumCallback(cb func(string)) {
+func (a *ArtistPage) SetPlayAlbumCallback(cb func(string, int)) {
 	a.OnPlayAlbum = cb
 }
 
 func (a *ArtistPage) onPlayAlbum(albumID string) {
 	if a.OnPlayAlbum != nil {
-		a.OnPlayAlbum(albumID)
+		a.OnPlayAlbum(albumID, 0)
 	}
 }
 
+func (a *ArtistPage) onShowAlbumPage(albumID string) {
+	a.nav(AlbumRoute(albumID))
+}
+
 func (a *ArtistPage) loadAsync() {
 	go func() {
 		artist, err := a.sm.Server.GetArtist(a.artistID)
@@ -62,6 +69,7 @@ func (a *ArtistPage) loadAsync() {
 		a.titleDisp.Refresh()
 		ag := NewFixedAlbumGrid(artist.Album, a.im.GetAlbumThumbnail, true /*showYear*/)
 		ag.OnPlayAlbum = a.onPlayAlbum
+		ag.OnShowAlbumPage = a.onShowAlbumPage
 		a.container.Objects[0] = ag
 		a.container.Refresh()
 	}()

ui/browsingpane.go

@@ -21,7 +21,7 @@ type Searchable interface {
 }
 
 type CanPlayAlbum interface {
-	SetPlayAlbumCallback(func(albumID string))
+	SetPlayAlbumCallback(func(albumID string, startingTrack int))
 }
 
 type BrowsingPane struct {
@@ -70,8 +70,8 @@ func (b *BrowsingPane) SetPage(p Page) {
 func (b *BrowsingPane) doSetPage(p Page) {
 	b.curPage = p
 	if pa, ok := p.(CanPlayAlbum); ok {
-		pa.SetPlayAlbumCallback(func(albumID string) {
-			_ = b.app.PlaybackManager.PlayAlbum(albumID)
+		pa.SetPlayAlbumCallback(func(albumID string, firstTrack int) {
+			_ = b.app.PlaybackManager.PlayAlbum(albumID, firstTrack)
 		})
 	}
 	_, s := p.(Searchable)

ui/layout/columnslayout.go

@@ -0,0 +1,66 @@
+package layout
+
+import "fyne.io/fyne/v2"
+
+type ColumnsLayout struct {
+	ColumnWidths []float32
+}
+
+func NewColumnsLayout(widths []float32) *ColumnsLayout {
+	return &ColumnsLayout{ColumnWidths: widths}
+}
+
+func (c *ColumnsLayout) MinSize(objects []fyne.CanvasObject) fyne.Size {
+	var width float32
+	var height float32
+	for i := 0; i < len(objects); i++ {
+		if !objects[i].Visible() {
+			continue
+		}
+		height = fyne.Max(height, objects[i].MinSize().Height)
+		w := objects[i].MinSize().Width
+		if i < len(c.ColumnWidths) && c.ColumnWidths[i] > w {
+			w = c.ColumnWidths[i]
+		}
+		width += w
+	}
+	return fyne.NewSize(width, height)
+}
+
+func (c *ColumnsLayout) Layout(objects []fyne.CanvasObject, size fyne.Size) {
+	var fixedW float32
+	var expandObjCount int
+	for i := 0; i < min(len(objects), len(c.ColumnWidths)); i++ {
+		if !objects[i].Visible() {
+			continue
+		}
+		if c.ColumnWidths[i] < 0 {
+			expandObjCount++
+		} else {
+			itemW := objects[i].MinSize().Width
+			fixedW += fyne.Max(itemW, c.ColumnWidths[i])
+		}
+	}
+	extraW := size.Width - fixedW
+	expandObjW := extraW / float32(expandObjCount)
+
+	var x float32
+	for i := 0; i < len(objects); i++ {
+		w := objects[i].MinSize().Width
+		if i < len(c.ColumnWidths) && c.ColumnWidths[i] > w {
+			w = c.ColumnWidths[i]
+		} else if c.ColumnWidths[i] < 0 && expandObjW > w {
+			w = expandObjW
+		}
+		objects[i].Resize(fyne.NewSize(w, size.Height))
+		objects[i].Move(fyne.NewPos(x, 0))
+		x += w
+	}
+}
+
+func min(x, y int) int {
+	if x < y {
+		return x
+	}
+	return y
+}

ui/router.go

@@ -27,6 +27,10 @@ func ArtistRoute(artistID string) Route {
 	return Route{Page: Artist, Arg: artistID}
 }
 
+func AlbumRoute(albumID string) Route {
+	return Route{Page: Album, Arg: albumID}
+}
+
 type NavigationHandler interface {
 	SetPage(Page)
 }
@@ -45,10 +49,12 @@ func NewRouter(app *backend.App, nav NavigationHandler) Router {
 
 func (r Router) CreatePage(rte Route) Page {
 	switch rte.Page {
+	case Album:
+		return NewAlbumPage(rte.Arg, r.App.LibraryManager)
 	case Albums:
 		return NewAlbumsPage("Albums", rte.Arg, r.App.LibraryManager, r.App.ImageManager, r.OpenRoute)
 	case Artist:
-		return NewArtistPage(rte.Arg, r.App.ServerManager, r.App.ImageManager)
+		return NewArtistPage(rte.Arg, r.App.ServerManager, r.App.ImageManager, r.OpenRoute)
 	}
 	return nil
 }

ui/widgets/albumcard.go

@@ -64,7 +64,7 @@ type AlbumCard struct {
 
 	albumID   string
 	artistID  string
-	title     *widget.Label
+	title     *CustomHyperlink
 	artist    *CustomHyperlink
 	year      *widget.Label
 	container *fyne.Container
@@ -91,7 +91,7 @@ func (a *AlbumCard) MouseMoved(*desktop.MouseEvent) {}
 
 func NewAlbumCard(showYear bool) *AlbumCard {
 	a := &AlbumCard{
-		title:    widget.NewLabel(""),
+		title:    NewCustomHyperlink(),
 		artist:   NewCustomHyperlink(),
 		year:     widget.NewLabel(""),
 		Cover:    newAlbumCover(),
@@ -103,13 +103,16 @@ func NewAlbumCard(showYear bool) *AlbumCard {
 			a.OnPlay()
 		}
 	}
+	a.title.OnTapped = func() {
+		if a.OnShowAlbumPage != nil {
+			a.OnShowAlbumPage()
+		}
+	}
 	a.artist.OnTapped = func() {
 		if a.OnShowArtistPage != nil {
 			a.OnShowArtistPage()
 		}
 	}
-	a.title.Wrapping = fyne.TextTruncate
-	a.title.TextStyle = fyne.TextStyle{Bold: true}
 
 	a.createContainer()
 	return a

ui/widgets/tracklist.go

@@ -0,0 +1,102 @@
+package widgets
+
+import (
+	"strconv"
+	"supersonic/ui/layout"
+	"supersonic/ui/util"
+
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/widget"
+	"github.com/dweymouth/go-subsonic"
+)
+
+type TrackRow struct {
+	widget.BaseWidget
+
+	trackID     string
+	prevTrackID string
+
+	num    *widget.RichText
+	name   *widget.RichText
+	artist *widget.RichText
+	dur    *widget.RichText
+
+	OnDoubleTapped func()
+
+	container *fyne.Container
+}
+
+var _ fyne.DoubleTappable = (*TrackRow)(nil)
+
+func NewTrackRow() *TrackRow {
+	t := &TrackRow{}
+	t.ExtendBaseWidget(t)
+	t.num = widget.NewRichTextWithText("")
+	t.name = widget.NewRichTextWithText("")
+	t.name.Wrapping = fyne.TextTruncate
+	t.artist = widget.NewRichTextWithText("")
+	t.artist.Wrapping = fyne.TextTruncate
+	t.dur = widget.NewRichTextWithText("")
+
+	t.container = container.New(layout.NewColumnsLayout([]float32{30, -1, -1, 50}),
+		t.num, t.name, t.artist, t.dur)
+	return t
+}
+
+func (t *TrackRow) Update(tr *subsonic.Child) {
+	if tr.ID == t.prevTrackID {
+		return
+	}
+	t.prevTrackID = t.trackID
+	t.trackID = tr.ID
+	t.num.Segments[0].(*widget.TextSegment).Text = strconv.Itoa(tr.Track)
+	t.name.Segments[0].(*widget.TextSegment).Text = tr.Title
+	t.artist.Segments[0].(*widget.TextSegment).Text = tr.Artist
+	t.dur.Segments[0].(*widget.TextSegment).Text = util.SecondsToTimeString(float64(tr.Duration))
+
+	t.Refresh()
+}
+
+func (t *TrackRow) CreateRenderer() fyne.WidgetRenderer {
+	return widget.NewSimpleRenderer(t.container)
+}
+
+func (t *TrackRow) DoubleTapped(*fyne.PointEvent) {
+	if t.OnDoubleTapped != nil {
+		t.OnDoubleTapped()
+	}
+}
+
+type Tracklist struct {
+	widget.BaseWidget
+
+	tracks []*subsonic.Child
+	list   *widget.List
+
+	OnPlayTrackAt func(int)
+}
+
+func NewTracklist(tracks []*subsonic.Child) *Tracklist {
+	t := &Tracklist{tracks: tracks}
+	t.ExtendBaseWidget(t)
+	t.list = widget.NewList(
+		func() int { return len(t.tracks) },
+		func() fyne.CanvasObject { return NewTrackRow() },
+		func(itemID widget.ListItemID, item fyne.CanvasObject) {
+			tr := item.(*TrackRow)
+			tr.OnDoubleTapped = func() { t.onPlayTrackAt(itemID) }
+			tr.Update(t.tracks[itemID])
+		})
+	return t
+}
+
+func (t *Tracklist) CreateRenderer() fyne.WidgetRenderer {
+	return widget.NewSimpleRenderer(t.list)
+}
+
+func (t *Tracklist) onPlayTrackAt(idx int) {
+	if t.OnPlayTrackAt != nil {
+		t.OnPlayTrackAt(idx)
+	}
+}