99 lines
2.1 KiB
Go
99 lines
2.1 KiB
Go
package widgets
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import (
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"fyne.io/fyne/v2"
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"fyne.io/fyne/v2/container"
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"fyne.io/fyne/v2/widget"
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fynelyrics "github.com/dweymouth/fyne-lyrics"
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"github.com/dweymouth/supersonic/backend/mediaprovider"
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)
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type LyricsViewer struct {
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widget.BaseWidget
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noLyricsLabel widget.Label
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viewer *fynelyrics.LyricsViewer
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lyrics *mediaprovider.Lyrics
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nextLyricLine int
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lastPlayPos float64
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container *fyne.Container
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isEmpty bool
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}
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func NewLyricsViewer() *LyricsViewer {
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l := &LyricsViewer{noLyricsLabel: widget.Label{
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Text: "Lyrics not available",
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}, isEmpty: true}
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l.ExtendBaseWidget(l)
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l.container = container.NewStack(&l.noLyricsLabel)
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return l
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}
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func (l *LyricsViewer) SetLyrics(lyrics *mediaprovider.Lyrics) {
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l.lyrics = lyrics
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l.nextLyricLine = 0
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if lyrics == nil || len(lyrics.Lines) == 0 {
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if !l.isEmpty {
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l.container.Objects[0] = &l.noLyricsLabel
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l.isEmpty = true
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l.Refresh()
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}
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return
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}
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if l.viewer == nil {
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l.viewer = fynelyrics.NewLyricsViewer()
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l.viewer.ActiveLyricPosition = fynelyrics.ActiveLyricPositionTopThird
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}
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lines := make([]string, len(lyrics.Lines))
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for i, line := range lyrics.Lines {
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lines[i] = line.Text
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}
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l.viewer.SetLyrics(lines, lyrics.Synced)
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if l.isEmpty {
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l.container.Objects[0] = l.viewer
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l.isEmpty = false
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l.Refresh()
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}
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}
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func (l *LyricsViewer) UpdatePlayPos(timeSecs float64) {
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if l.lyrics == nil || !l.lyrics.Synced {
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return
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}
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if timeSecs < l.lastPlayPos {
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l.OnSeeked(timeSecs)
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return
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}
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l.lastPlayPos = timeSecs
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// advance if needed
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if l.lyrics.Lines[l.nextLyricLine].Start <= timeSecs {
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l.viewer.NextLine()
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if l.nextLyricLine < len(l.lyrics.Lines) {
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l.nextLyricLine++
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}
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}
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}
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func (l *LyricsViewer) OnSeeked(timeSecs float64) {
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l.lastPlayPos = timeSecs
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if l.lyrics == nil || !l.lyrics.Synced {
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return
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}
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nextLine := 0 // first line that starts after timeSecs
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for i, l := range l.lyrics.Lines {
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if l.Start > timeSecs {
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nextLine = i
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break
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}
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}
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l.nextLyricLine = nextLine
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l.viewer.SetCurrentLine(nextLine /*one-indexed*/)
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}
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func (l *LyricsViewer) CreateRenderer() fyne.WidgetRenderer {
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return widget.NewSimpleRenderer(l.container)
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}
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