better animation

mobile/lib/infrastructure/repositories/remote_album.repository.dart

@@ -9,8 +9,9 @@ class DriftRemoteAlbumRepository extends DriftDatabaseRepository {
   final Drift _db;
   const DriftRemoteAlbumRepository(this._db) : super(_db);
 
-  Future<List<RemoteAlbum>> getAll(
+  Future<List<RemoteAlbum>> getAll({
-      {Set<SortRemoteAlbumsBy> sortBy = const {}}) {
+    Set<SortRemoteAlbumsBy> sortBy = const {},
+  }) {
     final assetCount = _db.remoteAlbumAssetEntity.assetId.count();
 
     final query = _db.remoteAlbumEntity.select().join([

mobile/lib/presentation/pages/dev/drift_trash.page.dart

@@ -1,6 +1,5 @@
 import 'package:auto_route/auto_route.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter/widgets.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:immich_mobile/extensions/translate_extensions.dart';
 import 'package:immich_mobile/presentation/widgets/timeline/timeline.widget.dart';

mobile/lib/utils/remote_album.utils.dart

@@ -2,35 +2,45 @@ import 'package:collection/collection.dart';
 import 'package:immich_mobile/domain/models/album/album.model.dart';
 
 typedef AlbumSortFn = List<RemoteAlbum> Function(
-    List<RemoteAlbum> albums, bool isReverse);
+  List<RemoteAlbum> albums,
+  bool isReverse,
+);
 
 class _RemoteAlbumSortHandlers {
   const _RemoteAlbumSortHandlers._();
 
   static const AlbumSortFn created = _sortByCreated;
   static List<RemoteAlbum> _sortByCreated(
-      List<RemoteAlbum> albums, bool isReverse) {
+    List<RemoteAlbum> albums,
+    bool isReverse,
+  ) {
     final sorted = albums.sortedBy((album) => album.createdAt);
     return (isReverse ? sorted.reversed : sorted).toList();
   }
 
   static const AlbumSortFn title = _sortByTitle;
   static List<RemoteAlbum> _sortByTitle(
-      List<RemoteAlbum> albums, bool isReverse) {
+    List<RemoteAlbum> albums,
+    bool isReverse,
+  ) {
     final sorted = albums.sortedBy((album) => album.name);
     return (isReverse ? sorted.reversed : sorted).toList();
   }
 
   static const AlbumSortFn lastModified = _sortByLastModified;
   static List<RemoteAlbum> _sortByLastModified(
-      List<RemoteAlbum> albums, bool isReverse) {
+    List<RemoteAlbum> albums,
+    bool isReverse,
+  ) {
     final sorted = albums.sortedBy((album) => album.updatedAt);
     return (isReverse ? sorted.reversed : sorted).toList();
   }
 
   static const AlbumSortFn assetCount = _sortByAssetCount;
   static List<RemoteAlbum> _sortByAssetCount(
-      List<RemoteAlbum> albums, bool isReverse) {
+    List<RemoteAlbum> albums,
+    bool isReverse,
+  ) {
     final sorted =
         albums.sorted((a, b) => a.assetCount.compareTo(b.assetCount));
     return (isReverse ? sorted.reversed : sorted).toList();
@@ -38,7 +48,9 @@ class _RemoteAlbumSortHandlers {
 
   static const AlbumSortFn mostRecent = _sortByMostRecent;
   static List<RemoteAlbum> _sortByMostRecent(
-      List<RemoteAlbum> albums, bool isReverse) {
+    List<RemoteAlbum> albums,
+    bool isReverse,
+  ) {
     final sorted = albums.sorted((a, b) {
       // For most recent, we sort by updatedAt in descending order
       return b.updatedAt.compareTo(a.updatedAt);
@@ -48,7 +60,9 @@ class _RemoteAlbumSortHandlers {
 
   static const AlbumSortFn mostOldest = _sortByMostOldest;
   static List<RemoteAlbum> _sortByMostOldest(
-      List<RemoteAlbum> albums, bool isReverse) {
+    List<RemoteAlbum> albums,
+    bool isReverse,
+  ) {
     final sorted = albums.sorted((a, b) {
       // For oldest, we sort by createdAt in ascending order
       return a.createdAt.compareTo(b.createdAt);

mobile/lib/widgets/common/mesmerizing_sliver_app_bar.dart

@@ -1,3 +1,5 @@
+import 'dart:io';
+
 import 'package:flutter/material.dart';
 import 'package:hooks_riverpod/hooks_riverpod.dart';
 import 'package:immich_mobile/domain/models/asset/base_asset.model.dart';
@@ -5,11 +7,10 @@ import 'package:immich_mobile/domain/services/timeline.service.dart';
 import 'package:immich_mobile/extensions/build_context_extensions.dart';
 import 'package:immich_mobile/extensions/translate_extensions.dart';
 import 'package:immich_mobile/presentation/widgets/images/image_provider.dart';
-import 'package:immich_mobile/presentation/widgets/images/thumb_hash_provider.dart';
 import 'package:immich_mobile/providers/infrastructure/timeline.provider.dart';
 import 'package:immich_mobile/providers/timeline/multiselect.provider.dart';
 
-class MesmerizingSliverAppBar extends ConsumerWidget {
+class MesmerizingSliverAppBar extends ConsumerStatefulWidget {
   const MesmerizingSliverAppBar({
     super.key,
     required this.title,
@@ -19,6 +20,15 @@ class MesmerizingSliverAppBar extends ConsumerWidget {
   final String title;
   final IconData icon;
 
+  @override
+  ConsumerState<MesmerizingSliverAppBar> createState() =>
+      _MesmerizingSliverAppBarState();
+}
+
+class _MesmerizingSliverAppBarState
+    extends ConsumerState<MesmerizingSliverAppBar> {
+  double _scrollProgress = 0.0;
+
   double _calculateScrollProgress(FlexibleSpaceBarSettings? settings) {
     if (settings?.maxExtent == null || settings?.minExtent == null) {
       return 1.0;
@@ -34,11 +44,12 @@ class MesmerizingSliverAppBar extends ConsumerWidget {
   }
 
   @override
-  Widget build(BuildContext context, WidgetRef ref) {
+  Widget build(BuildContext context) {
     final timelineService = ref.watch(timelineServiceProvider);
     final assetCount = timelineService.totalAssets;
     final isMultiSelectEnabled =
         ref.watch(multiSelectProvider.select((s) => s.isEnabled));
+
     return SliverAnimatedOpacity(
       duration: Durations.medium1,
       opacity: isMultiSelectEnabled ? 0 : 1,
@@ -48,19 +59,56 @@ class MesmerizingSliverAppBar extends ConsumerWidget {
         pinned: true,
         snap: false,
         elevation: 0,
+        leading: IconButton(
+          icon: Icon(
+            Platform.isIOS
+                ? Icons.arrow_back_ios_new_rounded
+                : Icons.arrow_back,
+            color: Color.lerp(
+              Colors.white,
+              context.primaryColor,
+              _scrollProgress,
+            ),
+            shadows: [
+              _scrollProgress < 0.95
+                  ? Shadow(
+                      offset: const Offset(0, 2),
+                      blurRadius: 5,
+                      color: Colors.black.withValues(alpha: 0.5),
+                    )
+                  : const Shadow(
+                      offset: Offset(0, 2),
+                      blurRadius: 0,
+                      color: Colors.transparent,
+                    ),
+            ],
+          ),
+          onPressed: () {
+            context.pop();
+          },
+        ),
         flexibleSpace: LayoutBuilder(
           builder: (context, constraints) {
             final settings = context
                 .dependOnInheritedWidgetOfExactType<FlexibleSpaceBarSettings>();
             final scrollProgress = _calculateScrollProgress(settings);
 
+            // Update scroll progress for the leading button
+            WidgetsBinding.instance.addPostFrameCallback((_) {
+              if (mounted && _scrollProgress != scrollProgress) {
+                setState(() {
+                  _scrollProgress = scrollProgress;
+                });
+              }
+            });
+
             return FlexibleSpaceBar(
               centerTitle: true,
               title: AnimatedSwitcher(
                 duration: const Duration(milliseconds: 200),
                 child: scrollProgress > 0.95
                     ? Text(
-                        title,
+                        widget.title,
                         style: TextStyle(
                           color: context.primaryColor,
                           fontWeight: FontWeight.w600,
@@ -72,8 +120,8 @@ class MesmerizingSliverAppBar extends ConsumerWidget {
               background: _ExpandedBackground(
                 assetCount: assetCount,
                 scrollProgress: scrollProgress,
-                title: title,
+                title: widget.title,
-                icon: icon,
+                icon: widget.icon,
               ),
             );
           },
@@ -83,7 +131,7 @@ class MesmerizingSliverAppBar extends ConsumerWidget {
   }
 }
 
-class _ExpandedBackground extends ConsumerWidget {
+class _ExpandedBackground extends ConsumerStatefulWidget {
   final int assetCount;
   final double scrollProgress;
   final String title;
@@ -97,19 +145,61 @@ class _ExpandedBackground extends ConsumerWidget {
   });
 
   @override
-  Widget build(BuildContext context, WidgetRef ref) {
+  ConsumerState<_ExpandedBackground> createState() =>
+      _ExpandedBackgroundState();
+}
+
+class _ExpandedBackgroundState extends ConsumerState<_ExpandedBackground>
+    with SingleTickerProviderStateMixin {
+  late AnimationController _slideController;
+  late Animation<Offset> _slideAnimation;
+
+  @override
+  void initState() {
+    super.initState();
+
+    _slideController = AnimationController(
+      duration: const Duration(milliseconds: 800),
+      vsync: this,
+    );
+
+    _slideAnimation = Tween<Offset>(
+      begin: const Offset(0, 1.5),
+      end: Offset.zero,
+    ).animate(
+      CurvedAnimation(
+        parent: _slideController,
+        curve: Curves.easeOutCubic,
+      ),
+    );
+
+    Future.delayed(const Duration(milliseconds: 100), () {
+      if (mounted) {
+        _slideController.forward();
+      }
+    });
+  }
+
+  @override
+  void dispose() {
+    _slideController.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
     final timelineService = ref.watch(timelineServiceProvider);
 
     return Stack(
       fit: StackFit.expand,
       children: [
         Transform.translate(
-          offset: Offset(0, scrollProgress * 50),
+          offset: Offset(0, widget.scrollProgress * 50),
           child: Transform.scale(
-            scale: 1.4 - (scrollProgress * 0.2),
+            scale: 1.4 - (widget.scrollProgress * 0.2),
             child: _RandomAssetBackground(
               timelineService: timelineService,
-              icon: icon,
+              icon: widget.icon,
             ),
           ),
         ),
@@ -122,22 +212,24 @@ class _ExpandedBackground extends ConsumerWidget {
                 Colors.transparent,
                 Colors.transparent,
                 Colors.black.withValues(
-                  alpha: 0.3 + (scrollProgress * 0.2),
+                  alpha: 0.6 + (widget.scrollProgress * 0.2),
                 ),
               ],
-              stops: const [0.0, 0.7, 1.0],
+              stops: const [0.0, 0.65, 1.0],
             ),
           ),
         ),
         Positioned(
           bottom: 16,
           left: 16,
+          child: SlideTransition(
+            position: _slideAnimation,
             child: Column(
               crossAxisAlignment: CrossAxisAlignment.start,
               mainAxisSize: MainAxisSize.min,
               children: [
                 Text(
-                title,
+                  widget.title,
                   style: const TextStyle(
                     color: Colors.white,
                     fontSize: 36,
@@ -152,16 +244,15 @@ class _ExpandedBackground extends ConsumerWidget {
                     ],
                   ),
                 ),
-              const SizedBox(height: 6),
                 AnimatedContainer(
                   duration: const Duration(milliseconds: 300),
                   child: Text(
                     'items_count'.t(
                       context: context,
-                    args: {"count": assetCount},
+                      args: {"count": widget.assetCount},
                     ),
                     style: context.textTheme.labelLarge?.copyWith(
-                    letterSpacing: 0.2,
+                      // letterSpacing: 0.2,
                       fontWeight: FontWeight.bold,
                       color: Colors.white,
                       shadows: [
@@ -177,6 +268,7 @@ class _ExpandedBackground extends ConsumerWidget {
               ],
             ),
           ),
+        ),
       ],
     );
   }
@@ -198,12 +290,13 @@ class _RandomAssetBackground extends StatefulWidget {
 class _RandomAssetBackgroundState extends State<_RandomAssetBackground>
     with TickerProviderStateMixin {
   late AnimationController _zoomController;
-  late AnimationController _fadeController;
+  late AnimationController _crossFadeController;
   late Animation<double> _zoomAnimation;
   late Animation<Offset> _panAnimation;
-  late Animation<double> _fadeAnimation;
+  late Animation<double> _crossFadeAnimation;
   BaseAsset? _currentAsset;
   BaseAsset? _nextAsset;
+  bool _isZoomingIn = true;
 
   final LinearGradient gradient = LinearGradient(
     begin: Alignment.topLeft,
@@ -222,18 +315,18 @@ class _RandomAssetBackgroundState extends State<_RandomAssetBackground>
     super.initState();
 
     _zoomController = AnimationController(
-      duration: const Duration(seconds: 10),
+      duration: const Duration(seconds: 12),
       vsync: this,
     );
 
-    _fadeController = AnimationController(
+    _crossFadeController = AnimationController(
-      duration: const Duration(milliseconds: 600),
+      duration: const Duration(milliseconds: 1200),
       vsync: this,
     );
 
     _zoomAnimation = Tween<double>(
       begin: 1.0,
-      end: 1.3,
+      end: 1.2,
     ).animate(
       CurvedAnimation(
         parent: _zoomController,
@@ -243,7 +336,7 @@ class _RandomAssetBackgroundState extends State<_RandomAssetBackground>
 
     _panAnimation = Tween<Offset>(
       begin: Offset.zero,
-      end: const Offset(0.15, -0.1),
+      end: const Offset(0.15, -0.5),
     ).animate(
       CurvedAnimation(
         parent: _zoomController,
@@ -251,38 +344,42 @@ class _RandomAssetBackgroundState extends State<_RandomAssetBackground>
       ),
     );
 
-    _fadeAnimation = Tween<double>(
+    _crossFadeAnimation = Tween<double>(
       begin: 0.0,
       end: 1.0,
     ).animate(
       CurvedAnimation(
-        parent: _fadeController,
+        parent: _crossFadeController,
-        curve: Curves.easeOut,
+        curve: Curves.easeInOutCubic,
       ),
     );
 
     Future.delayed(
       Durations.medium1,
-      () => _loadRandomAsset(),
+      () => _loadFirstAsset(),
     );
   }
 
   @override
   void dispose() {
     _zoomController.dispose();
-    _fadeController.dispose();
+    _crossFadeController.dispose();
     super.dispose();
   }
 
-  void _startZoomCycle() {
+  void _startAnimationCycle() {
+    if (_isZoomingIn) {
       _zoomController.forward().then((_) {
-      if (mounted) {
         _loadNextAsset();
-      }
+      });
+    } else {
+      _zoomController.reverse().then((_) {
+        _loadNextAsset();
       });
     }
+  }
 
-  Future<void> _loadRandomAsset() async {
+  Future<void> _loadFirstAsset() async {
     if (!mounted) {
       return;
     }
@@ -299,9 +396,15 @@ class _RandomAssetBackgroundState extends State<_RandomAssetBackground>
       _currentAsset = widget.timelineService.getRandomAsset();
     });
 
-    await _fadeController.forward();
+    await _crossFadeController.forward();
+
     if (_zoomController.status == AnimationStatus.dismissed) {
-      _startZoomCycle();
+      if (_isZoomingIn) {
+        _zoomController.reset();
+      } else {
+        _zoomController.value = 1.0;
+      }
+      _startAnimationCycle();
     }
   }
 
@@ -312,24 +415,28 @@ class _RandomAssetBackgroundState extends State<_RandomAssetBackground>
 
     try {
       if (widget.timelineService.totalAssets > 1) {
+        // Load next asset while keeping current one visible
+        final nextAsset = widget.timelineService.getRandomAsset();
+
         setState(() {
-          _nextAsset = widget.timelineService.getRandomAsset();
+          _nextAsset = nextAsset;
         });
 
-        await _fadeController.reverse();
+        await _crossFadeController.reverse();
-
         setState(() {
           _currentAsset = _nextAsset;
           _nextAsset = null;
         });
 
-        _zoomController.reset();
+        _crossFadeController.value = 1.0;
-        await _fadeController.forward();
+
-        _startZoomCycle();
+        _isZoomingIn = !_isZoomingIn;
+
+        _startAnimationCycle();
       }
     } catch (e) {
       _zoomController.reset();
-      _startZoomCycle();
+      _startAnimationCycle();
     }
   }
 
@@ -347,13 +454,19 @@ class _RandomAssetBackgroundState extends State<_RandomAssetBackground>
     }
 
     return AnimatedBuilder(
-      animation:
+      animation: Listenable.merge(
-          Listenable.merge([_zoomAnimation, _panAnimation, _fadeAnimation]),
+        [_zoomAnimation, _panAnimation, _crossFadeAnimation],
+      ),
       builder: (context, child) {
         return Transform.scale(
           scale: _zoomAnimation.value,
-          child: FadeTransition(
+          child: Stack(
-            opacity: _fadeAnimation,
+            fit: StackFit.expand,
+            children: [
+              // Current image
+              if (_currentAsset != null)
+                Opacity(
+                  opacity: _crossFadeAnimation.value,
                   child: SizedBox(
                     width: double.infinity,
                     height: double.infinity,
@@ -361,11 +474,11 @@ class _RandomAssetBackgroundState extends State<_RandomAssetBackground>
                       alignment: Alignment.topRight,
                       image: getFullImageProvider(_currentAsset!),
                       fit: BoxFit.cover,
-                frameBuilder: (context, child, frame, wasSynchronouslyLoaded) {
+                      frameBuilder:
+                          (context, child, frame, wasSynchronouslyLoaded) {
                         if (wasSynchronouslyLoaded || frame != null) {
                           return child;
                         }
-
                         return Container();
                       },
                       errorBuilder: (context, error, stackTrace) {
@@ -376,6 +489,34 @@ class _RandomAssetBackgroundState extends State<_RandomAssetBackground>
                     ),
                   ),
                 ),
+              // Next image (for cross-fade)
+              if (_nextAsset != null)
+                Opacity(
+                  opacity: 1.0 - _crossFadeAnimation.value,
+                  child: SizedBox(
+                    width: double.infinity,
+                    height: double.infinity,
+                    child: Image(
+                      alignment: Alignment.topRight,
+                      image: getFullImageProvider(_nextAsset!),
+                      fit: BoxFit.cover,
+                      frameBuilder:
+                          (context, child, frame, wasSynchronouslyLoaded) {
+                        if (wasSynchronouslyLoaded || frame != null) {
+                          return child;
+                        }
+                        return Container();
+                      },
+                      errorBuilder: (context, error, stackTrace) {
+                        return Container(
+                          decoration: BoxDecoration(gradient: gradient),
+                        );
+                      },
+                    ),
+                  ),
+                ),
+            ],
+          ),
         );
       },
     );