feat(lyrics): lyrics delay working implementation

lib/components/lyrics/zoom_controls.dart

@@ -6,19 +6,49 @@ import 'package:spotube/collections/spotube_icons.dart';
 class ZoomControls extends HookWidget {
   final int value;
   final ValueChanged<int> onChanged;
-  final int min;
+  final int? min;
-  final int max;
+  final int? max;
+
+  final int interval;
+  final Icon increaseIcon;
+  final Icon decreaseIcon;
+
+  final Axis direction;
+  final String unit;
 
   const ZoomControls({
     Key? key,
     required this.value,
     required this.onChanged,
-    this.min = 50,
+    this.min,
-    this.max = 200,
+    this.max,
+    this.interval = 10,
+    this.increaseIcon = const Icon(SpotubeIcons.zoomIn),
+    this.decreaseIcon = const Icon(SpotubeIcons.zoomOut),
+    this.direction = Axis.horizontal,
+    this.unit = "%",
   }) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
+    final actions = [
+      PlatformIconButton(
+        icon: decreaseIcon,
+        onPressed: () {
+          if (value == min) return;
+          onChanged(value - interval);
+        },
+      ),
+      PlatformText("$value$unit"),
+      PlatformIconButton(
+        icon: increaseIcon,
+        onPressed: () {
+          if (value == max) return;
+          onChanged(value + interval);
+        },
+      ),
+    ];
+
     return Container(
       decoration: BoxDecoration(
         color: PlatformTheme.of(context)
@@ -26,28 +56,20 @@ class ZoomControls extends HookWidget {
             ?.withOpacity(0.7),
         borderRadius: BorderRadius.circular(10),
       ),
-      constraints: const BoxConstraints(maxHeight: 50),
+      constraints:
+          BoxConstraints(maxHeight: direction == Axis.horizontal ? 50 : 200),
       margin: const EdgeInsets.all(8),
-      child: Row(
+      child: direction == Axis.horizontal
+          ? Row(
               mainAxisAlignment: MainAxisAlignment.end,
               mainAxisSize: MainAxisSize.min,
-        children: [
+              children: actions,
-          PlatformIconButton(
+            )
-            icon: const Icon(SpotubeIcons.zoomOut),
+          : Column(
-            onPressed: () {
+              mainAxisAlignment: MainAxisAlignment.end,
-              if (value == min) return;
+              mainAxisSize: MainAxisSize.min,
-              onChanged(value - 10);
+              verticalDirection: VerticalDirection.up,
-            },
+              children: actions,
-          ),
-          PlatformText("$value%"),
-          PlatformIconButton(
-            icon: const Icon(SpotubeIcons.zoomIn),
-            onPressed: () {
-              if (value == max) return;
-              onChanged(value + 10);
-            },
-          ),
-        ],
             ),
     );
   }

lib/hooks/use_synced_lyrics.dart

@@ -5,6 +5,7 @@ import 'package:spotube/provider/playlist_queue_provider.dart';
 int useSyncedLyrics(
   WidgetRef ref,
   Map<int, String> lyricsMap,
+  int delay,
 ) {
   final stream = PlaylistQueueNotifier.position;
 
@@ -12,11 +13,11 @@ int useSyncedLyrics(
 
   useEffect(() {
     return stream.listen((pos) {
-      if (lyricsMap.containsKey(pos.inSeconds)) {
+      if (lyricsMap.containsKey(pos.inSeconds + delay)) {
-        currentTime.value = pos.inSeconds;
+        currentTime.value = pos.inSeconds + delay;
       }
     }).cancel;
-  }, [lyricsMap]);
+  }, [lyricsMap, delay]);
 
   return (Duration(seconds: currentTime.value)).inSeconds;
 }

lib/pages/lyrics/synced_lyrics.dart

@@ -3,6 +3,7 @@ import 'package:flutter_hooks/flutter_hooks.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:palette_generator/palette_generator.dart';
 import 'package:spotify/spotify.dart';
+import 'package:spotube/collections/spotube_icons.dart';
 import 'package:spotube/components/lyrics/zoom_controls.dart';
 import 'package:spotube/components/shared/shimmers/shimmer_lyrics.dart';
 import 'package:spotube/components/shared/spotube_marquee_text.dart';
@@ -15,6 +16,8 @@ import 'package:spotube/services/queries/queries.dart';
 
 import 'package:spotube/utils/type_conversion_utils.dart';
 
+final _delay = StateProvider<int>((ref) => 0);
+
 class SyncedLyrics extends HookConsumerWidget {
   final PaletteColor palette;
   final bool? isModal;
@@ -32,9 +35,13 @@ class SyncedLyrics extends HookConsumerWidget {
     final breakpoint = useBreakpoints();
     final controller = useAutoScrollController();
 
+    final delay = ref.watch(_delay);
+
     final timedLyricsQuery =
         useQueries.lyrics.spotifySynced(ref, playlist?.activeTrack);
+
     final lyricValue = timedLyricsQuery.data;
+
     final lyricsMap = useMemoized(
       () =>
           lyricValue?.lyrics
@@ -44,13 +51,16 @@ class SyncedLyrics extends HookConsumerWidget {
           {},
       [lyricValue],
     );
-    final currentTime = useSyncedLyrics(ref, lyricsMap);
+    final currentTime = useSyncedLyrics(ref, lyricsMap, delay);
     final textZoomLevel = useState<int>(100);
 
     final textTheme = Theme.of(context).textTheme;
 
     useEffect(() {
       controller.scrollToIndex(0);
+      WidgetsBinding.instance.addPostFrameCallback((_) {
+        ref.read(_delay.notifier).state = 0;
+      });
       return null;
     }, [playlist?.activeTrack]);
 
@@ -137,12 +147,37 @@ class SyncedLyrics extends HookConsumerWidget {
           ),
           Align(
             alignment: Alignment.bottomRight,
-            child: ZoomControls(
+            child: Builder(builder: (context) {
+              final actions = [
+                ZoomControls(
+                  value: delay,
+                  onChanged: (value) => ref.read(_delay.notifier).state = value,
+                  interval: 1,
+                  unit: "s",
+                  increaseIcon: const Icon(SpotubeIcons.add),
+                  decreaseIcon: const Icon(SpotubeIcons.remove),
+                  direction: isModal == true ? Axis.horizontal : Axis.vertical,
+                ),
+                ZoomControls(
                   value: textZoomLevel.value,
                   onChanged: (value) => textZoomLevel.value = value,
                   min: 50,
                   max: 200,
                 ),
+              ];
+
+              return isModal == true
+                  ? Row(
+                      mainAxisSize: MainAxisSize.min,
+                      crossAxisAlignment: CrossAxisAlignment.end,
+                      children: actions,
+                    )
+                  : Column(
+                      mainAxisSize: MainAxisSize.min,
+                      crossAxisAlignment: CrossAxisAlignment.end,
+                      children: actions,
+                    );
+            }),
           ),
         ],
       );