const galore

analysis_options.yaml

@@ -29,6 +29,6 @@ linter:
     unnecessary_lambdas: true
 
     # misc
-    prefer_const_constructors: false # too noisy
+    prefer_const_constructors: true # should specify `const` as Dart does not build constants when using const constructors without it
     prefer_const_constructors_in_immutables: true
     prefer_const_declarations: true

lib/model/source/collection_lens.dart

@@ -159,14 +159,14 @@ class CollectionLens with ChangeNotifier, CollectionActivityMixin {
             break;
           case EntryGroupFactor.none:
             sections = Map.fromEntries([
-              MapEntry(SectionKey(), _filteredSortedEntries),
+              MapEntry(const SectionKey(), _filteredSortedEntries),
             ]);
             break;
         }
         break;
       case EntrySortFactor.size:
         sections = Map.fromEntries([
-          MapEntry(SectionKey(), _filteredSortedEntries),
+          MapEntry(const SectionKey(), _filteredSortedEntries),
         ]);
         break;
       case EntrySortFactor.name:

lib/theme/themes.dart

@@ -12,10 +12,10 @@ class Themes {
     scaffoldBackgroundColor: Colors.grey.shade900,
     dialogBackgroundColor: Colors.grey[850],
     toggleableActiveColor: _accentColor,
-    tooltipTheme: TooltipThemeData(
+    tooltipTheme: const TooltipThemeData(
       verticalOffset: 32,
     ),
-    appBarTheme: AppBarTheme(
+    appBarTheme: const AppBarTheme(
       textTheme: TextTheme(
         headline6: TextStyle(
           fontSize: 20,
@@ -24,7 +24,7 @@ class Themes {
         ),
       ),
     ),
-    colorScheme: ColorScheme.dark(
+    colorScheme: const ColorScheme.dark(
       primary: _accentColor,
       secondary: _accentColor,
       onPrimary: Colors.white,
@@ -32,7 +32,7 @@ class Themes {
     ),
     snackBarTheme: SnackBarThemeData(
       backgroundColor: Colors.grey.shade800,
-      contentTextStyle: TextStyle(
+      contentTextStyle: const TextStyle(
         color: Colors.white,
       ),
       behavior: SnackBarBehavior.floating,

lib/utils/constants.dart

@@ -15,10 +15,12 @@ class Constants {
     fontFeatures: [FontFeature.enable('smcp')],
   );
 
-  static const embossShadow = Shadow(
+  static const embossShadows = [
+    Shadow(
       color: Colors.black,
       offset: Offset(0.5, 1.0),
-  );
+    )
+  ];
 
   static const overlayUnknown = '—'; // em dash
 

lib/utils/time_utils.dart

@@ -23,7 +23,7 @@ extension ExtraDateTime on DateTime {
 
   bool get isToday => isAtSameDayAs(DateTime.now());
 
-  bool get isYesterday => isAtSameDayAs(DateTime.now().subtract(Duration(days: 1)));
+  bool get isYesterday => isAtSameDayAs(DateTime.now().subtract(const Duration(days: 1)));
 
   bool get isThisMonth => isAtSameMonthAs(DateTime.now());
 

lib/widgets/about/about_page.dart

@@ -18,15 +18,15 @@ class AboutPage extends StatelessWidget {
         child: CustomScrollView(
           slivers: [
             SliverPadding(
-              padding: EdgeInsets.only(top: 16),
+              padding: const EdgeInsets.only(top: 16),
               sliver: SliverList(
                 delegate: SliverChildListDelegate(
                   [
                     AppReference(),
-                    Divider(),
+                    const Divider(),
                     AboutUpdate(),
                     AboutCredits(),
-                    Divider(),
+                    const Divider(),
                   ],
                 ),
               ),

lib/widgets/about/app_ref.dart

@@ -28,14 +28,14 @@ class _AppReferenceState extends State<AppReference> {
         children: [
           _buildAvesLine(),
           _buildFlutterLine(),
-          SizedBox(height: 16),
+          const SizedBox(height: 16),
         ],
       ),
     );
   }
 
   Widget _buildAvesLine() {
-    final style = TextStyle(
+    const style = TextStyle(
       fontSize: 20,
       fontWeight: FontWeight.normal,
       letterSpacing: 1.0,
@@ -66,7 +66,7 @@ class _AppReferenceState extends State<AppReference> {
         children: [
           WidgetSpan(
             child: Padding(
-              padding: EdgeInsetsDirectional.only(end: 4),
+              padding: const EdgeInsetsDirectional.only(end: 4),
               child: FlutterLogo(
                 size: style.fontSize! * 1.25,
               ),

lib/widgets/about/credits.dart

@@ -9,12 +9,12 @@ class AboutCredits extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return Padding(
-      padding: EdgeInsets.symmetric(horizontal: 16),
+      padding: const EdgeInsets.symmetric(horizontal: 16),
       child: Column(
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
           ConstrainedBox(
-            constraints: BoxConstraints(minHeight: 48),
+            constraints: const BoxConstraints(minHeight: 48),
             child: Align(
               alignment: AlignmentDirectional.centerStart,
               child: Text(context.l10n.aboutCredits, style: Constants.titleTextStyle),
@@ -24,7 +24,7 @@ class AboutCredits extends StatelessWidget {
             TextSpan(
               children: [
                 TextSpan(text: context.l10n.aboutCreditsWorldAtlas1),
-                WidgetSpan(
+                const WidgetSpan(
                   child: LinkChip(
                     text: 'World Atlas',
                     url: 'https://github.com/topojson/world-atlas',
@@ -36,7 +36,7 @@ class AboutCredits extends StatelessWidget {
               ],
             ),
           ),
-          SizedBox(height: 16),
+          const SizedBox(height: 16),
         ],
       ),
     );

lib/widgets/about/licenses.dart

@@ -36,12 +36,12 @@ class _LicensesState extends State<Licenses> {
   @override
   Widget build(BuildContext context) {
     return SliverPadding(
-      padding: EdgeInsets.symmetric(horizontal: 8),
+      padding: const EdgeInsets.symmetric(horizontal: 8),
       sliver: SliverList(
         delegate: SliverChildListDelegate(
           [
             _buildHeader(),
-            SizedBox(height: 16),
+            const SizedBox(height: 16),
             AvesExpansionTile(
               title: context.l10n.aboutLicensesAndroidLibraries,
               color: BrandColors.android,
@@ -76,7 +76,7 @@ class _LicensesState extends State<Licenses> {
                         // as of Flutter v1.22.4, `cardColor` is used as a background color by `LicensePage`
                         cardColor: Theme.of(context).scaffoldBackgroundColor,
                       ),
-                      child: LicensePage(),
+                      child: const LicensePage(),
                     ),
                   ),
                 ),
@@ -91,18 +91,18 @@ class _LicensesState extends State<Licenses> {
 
   Widget _buildHeader() {
     return Padding(
-      padding: EdgeInsets.symmetric(horizontal: 8),
+      padding: const EdgeInsets.symmetric(horizontal: 8),
       child: Column(
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
           ConstrainedBox(
-            constraints: BoxConstraints(minHeight: 48),
+            constraints: const BoxConstraints(minHeight: 48),
             child: Align(
               alignment: AlignmentDirectional.centerStart,
               child: Text(context.l10n.aboutLicenses, style: Constants.titleTextStyle),
             ),
           ),
-          SizedBox(height: 8),
+          const SizedBox(height: 8),
           Text(context.l10n.aboutLicensesBanner),
         ],
       ),
@@ -122,17 +122,17 @@ class LicenseRow extends StatelessWidget {
     final subColor = bodyTextStyle.color!.withOpacity(.6);
 
     return Padding(
-      padding: EdgeInsets.symmetric(vertical: 8),
+      padding: const EdgeInsets.symmetric(vertical: 8),
       child: Column(
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
           LinkChip(
             text: package.name,
             url: package.sourceUrl,
-            textStyle: TextStyle(fontWeight: FontWeight.bold),
+            textStyle: const TextStyle(fontWeight: FontWeight.bold),
           ),
           Padding(
-            padding: EdgeInsetsDirectional.only(start: 16),
+            padding: const EdgeInsetsDirectional.only(start: 16),
             child: LinkChip(
               text: package.license,
               url: package.licenseUrl,

lib/widgets/about/news_badge.dart

@@ -1,9 +1,11 @@
 import 'package:flutter/material.dart';
 
 class AboutNewsBadge extends StatelessWidget {
+  const AboutNewsBadge();
+
   @override
   Widget build(BuildContext context) {
-    return Icon(
+    return const Icon(
       Icons.circle,
       size: 12,
       color: Colors.red,

lib/widgets/about/update.dart

@@ -25,22 +25,22 @@ class _AboutUpdateState extends State<AboutUpdate> {
       future: _updateChecker,
       builder: (context, snapshot) {
         final newVersionAvailable = snapshot.data == true;
-        if (!newVersionAvailable) return SizedBox();
+        if (!newVersionAvailable) return const SizedBox();
         return Column(
           children: [
             Padding(
-              padding: EdgeInsets.symmetric(horizontal: 16),
+              padding: const EdgeInsets.symmetric(horizontal: 16),
               child: Column(
                 crossAxisAlignment: CrossAxisAlignment.start,
                 children: [
                   ConstrainedBox(
-                    constraints: BoxConstraints(minHeight: 48),
+                    constraints: const BoxConstraints(minHeight: 48),
                     child: Align(
                       alignment: AlignmentDirectional.centerStart,
                       child: Text.rich(
                         TextSpan(
                           children: [
-                            WidgetSpan(
+                            const WidgetSpan(
                               child: Padding(
                                 padding: EdgeInsetsDirectional.only(end: 8),
                                 child: AboutNewsBadge(),
@@ -61,7 +61,7 @@ class _AboutUpdateState extends State<AboutUpdate> {
                           child: LinkChip(
                             text: context.l10n.aboutUpdateGithub,
                             url: 'https://github.com/deckerst/aves/releases',
-                            textStyle: TextStyle(fontWeight: FontWeight.bold),
+                            textStyle: const TextStyle(fontWeight: FontWeight.bold),
                           ),
                           alignment: PlaceholderAlignment.middle,
                         ),
@@ -70,7 +70,7 @@ class _AboutUpdateState extends State<AboutUpdate> {
                           child: LinkChip(
                             text: context.l10n.aboutUpdateGooglePlay,
                             url: 'https://play.google.com/store/apps/details?id=deckers.thibault.aves',
-                            textStyle: TextStyle(fontWeight: FontWeight.bold),
+                            textStyle: const TextStyle(fontWeight: FontWeight.bold),
                           ),
                           alignment: PlaceholderAlignment.middle,
                         ),
@@ -78,11 +78,11 @@ class _AboutUpdateState extends State<AboutUpdate> {
                       ],
                     ),
                   ),
-                  SizedBox(height: 16),
+                  const SizedBox(height: 16),
                 ],
               ),
             ),
-            Divider(),
+            const Divider(),
           ],
         );
       },

lib/widgets/aves_app.dart

@@ -41,11 +41,11 @@ class _AvesAppState extends State<AvesApp> {
   // observers are not registered when using the same list object with different items
   // the list itself needs to be reassigned
   List<NavigatorObserver> _navigatorObservers = [];
-  final EventChannel _contentChangeChannel = EventChannel('deckers.thibault/aves/contentchange');
+  final EventChannel _contentChangeChannel = const EventChannel('deckers.thibault/aves/contentchange');
-  final EventChannel _newIntentChannel = EventChannel('deckers.thibault/aves/intent');
+  final EventChannel _newIntentChannel = const EventChannel('deckers.thibault/aves/intent');
   final GlobalKey<NavigatorState> _navigatorKey = GlobalKey(debugLabel: 'app-navigator');
 
-  Widget getFirstPage({Map? intentData}) => settings.hasAcceptedTerms ? HomePage(intentData: intentData) : WelcomePage();
+  Widget getFirstPage({Map? intentData}) => settings.hasAcceptedTerms ? HomePage(intentData: intentData) : const WelcomePage();
 
   @override
   void initState() {
@@ -75,7 +75,7 @@ class _AvesAppState extends State<AvesApp> {
                   final home = initialized
                       ? getFirstPage()
                       : Scaffold(
-                          body: snapshot.hasError ? _buildError(snapshot.error!) : SizedBox(),
+                          body: snapshot.hasError ? _buildError(snapshot.error!) : const SizedBox(),
                         );
                   return Selector<Settings, Locale?>(
                       selector: (context, s) => s.locale,
@@ -108,12 +108,12 @@ class _AvesAppState extends State<AvesApp> {
   Widget _buildError(Object error) {
     return Container(
       alignment: Alignment.center,
-      padding: EdgeInsets.all(16),
+      padding: const EdgeInsets.all(16),
       child: Column(
         mainAxisSize: MainAxisSize.min,
         children: [
-          Icon(AIcons.error),
+          const Icon(AIcons.error),
-          SizedBox(height: 16),
+          const SizedBox(height: 16),
           Text(error.toString()),
         ],
       ),
@@ -151,7 +151,7 @@ class _AvesAppState extends State<AvesApp> {
 
     FirebaseCrashlytics.instance.log('New intent');
     _navigatorKey.currentState!.pushReplacement(DirectMaterialPageRoute(
-      settings: RouteSettings(name: HomePage.routeName),
+      settings: const RouteSettings(name: HomePage.routeName),
       builder: (_) => getFirstPage(intentData: intentData),
     ));
   }

lib/widgets/collection/app_bar.dart

@@ -137,7 +137,7 @@ class _CollectionAppBarState extends State<CollectionAppBar> with SingleTickerPr
       tooltip = MaterialLocalizations.of(context).backButtonTooltip;
     }
     return IconButton(
-      key: Key('appbar-leading-button'),
+      key: const Key('appbar-leading-button'),
       icon: AnimatedIcon(
         icon: AnimatedIcons.menu_arrow,
         progress: _browseToSelectAnimation,
@@ -197,19 +197,19 @@ class _CollectionAppBarState extends State<CollectionAppBar> with SingleTickerPr
         builder: (context, snapshot) {
           final canAddShortcuts = snapshot.data ?? false;
           return PopupMenuButton<CollectionAction>(
-            key: Key('appbar-menu-button'),
+            key: const Key('appbar-menu-button'),
             itemBuilder: (context) {
               final isNotEmpty = !collection.isEmpty;
               final hasSelection = collection.selection.isNotEmpty;
               return [
                 PopupMenuItem(
-                  key: Key('menu-sort'),
+                  key: const Key('menu-sort'),
                   value: CollectionAction.sort,
                   child: MenuRow(text: context.l10n.menuActionSort, icon: AIcons.sort),
                 ),
                 if (collection.sortFactor == EntrySortFactor.date)
                   PopupMenuItem(
-                    key: Key('menu-group'),
+                    key: const Key('menu-group'),
                     value: CollectionAction.group,
                     child: MenuRow(text: context.l10n.menuActionGroup, icon: AIcons.group),
                   ),
@@ -231,7 +231,7 @@ class _CollectionAppBarState extends State<CollectionAppBar> with SingleTickerPr
                     ),
                 ],
                 if (collection.isSelecting) ...[
-                  PopupMenuDivider(),
+                  const PopupMenuDivider(),
                   PopupMenuItem(
                     value: CollectionAction.copy,
                     enabled: hasSelection,
@@ -247,7 +247,7 @@ class _CollectionAppBarState extends State<CollectionAppBar> with SingleTickerPr
                     enabled: hasSelection,
                     child: MenuRow(text: context.l10n.collectionActionRefreshMetadata),
                   ),
-                  PopupMenuDivider(),
+                  const PopupMenuDivider(),
                   PopupMenuItem(
                     value: CollectionAction.selectAll,
                     enabled: collection.selection.length < collection.entryCount,
@@ -390,7 +390,7 @@ class _CollectionAppBarState extends State<CollectionAppBar> with SingleTickerPr
     Navigator.push(
       context,
       MaterialPageRoute(
-        settings: RouteSettings(name: StatsPage.routeName),
+        settings: const RouteSettings(name: StatsPage.routeName),
         builder: (context) => StatsPage(
           source: source,
           parentCollection: collection,

lib/widgets/collection/collection_grid.dart

@@ -318,7 +318,7 @@ class _CollectionScrollViewState extends State<_CollectionScrollView> {
       primary: true,
       // workaround to prevent scrolling the app bar away
       // when there is no content and we use `SliverFillRemaining`
-      physics: collection.isEmpty ? NeverScrollableScrollPhysics() : SloppyScrollPhysics(parent: AlwaysScrollableScrollPhysics()),
+      physics: collection.isEmpty ? const NeverScrollableScrollPhysics() : const SloppyScrollPhysics(parent: AlwaysScrollableScrollPhysics()),
       cacheExtent: context.select<TileExtentController, double>((controller) => controller.effectiveExtentMax),
       slivers: [
         appBar,
@@ -327,7 +327,7 @@ class _CollectionScrollViewState extends State<_CollectionScrollView> {
                 hasScrollBody: false,
                 child: _buildEmptyCollectionPlaceholder(collection),
               )
-            : SectionedListSliver<AvesEntry>(),
+            : const SectionedListSliver<AvesEntry>(),
         BottomPaddingSliver(),
       ],
     );
@@ -338,7 +338,7 @@ class _CollectionScrollViewState extends State<_CollectionScrollView> {
       valueListenable: collection.source.stateNotifier,
       builder: (context, sourceState, child) {
         if (sourceState == SourceState.loading) {
-          return SizedBox.shrink();
+          return const SizedBox.shrink();
         }
         if (collection.filters.any((filter) => filter is FavouriteFilter)) {
           return EmptyContent(

lib/widgets/collection/collection_page.dart

@@ -46,7 +46,7 @@ class _CollectionPageState extends State<CollectionPage> {
                 bottom: false,
                 child: ChangeNotifierProvider<CollectionLens>.value(
                   value: collection,
-                  child: CollectionGrid(
+                  child: const CollectionGrid(
                     key: Key('collection-grid'),
                   ),
                 ),

lib/widgets/collection/entry_set_action_delegate.dart

@@ -81,7 +81,7 @@ class EntrySetActionDelegate with FeedbackMixin, PermissionAwareMixin, SizeAware
     final destinationAlbum = await Navigator.push(
       context,
       MaterialPageRoute<String>(
-        settings: RouteSettings(name: AlbumPickPage.routeName),
+        settings: const RouteSettings(name: AlbumPickPage.routeName),
         builder: (context) => AlbumPickPage(source: source, moveType: moveType),
       ),
     );

lib/widgets/collection/filter_bar.dart

@@ -20,7 +20,7 @@ class FilterBar extends StatefulWidget implements PreferredSizeWidget {
         super(key: key);
 
   @override
-  final Size preferredSize = Size.fromHeight(preferredHeight);
+  final Size preferredSize = const Size.fromHeight(preferredHeight);
 
   @override
   _FilterBarState createState() => _FilterBarState();
@@ -92,10 +92,10 @@ class _FilterBarState extends State<FilterBar> {
           key: _animatedListKey,
           initialItemCount: widget.filters.length,
           scrollDirection: Axis.horizontal,
-          physics: BouncingScrollPhysics(),
+          physics: const BouncingScrollPhysics(),
-          padding: EdgeInsets.only(left: 8),
+          padding: const EdgeInsets.only(left: 8),
           itemBuilder: (context, index, animation) {
-            if (index >= widget.filters.length) return SizedBox();
+            if (index >= widget.filters.length) return const SizedBox();
             return _buildChip(widget.filters.toList()[index]);
           },
         ),
@@ -105,7 +105,7 @@ class _FilterBarState extends State<FilterBar> {
 
   Padding _buildChip(CollectionFilter filter) {
     return Padding(
-      padding: EdgeInsets.only(right: 8),
+      padding: const EdgeInsets.only(right: 8),
       child: Center(
         child: AvesFilterChip(
           key: ValueKey(filter),

lib/widgets/collection/grid/headers/album.dart

@@ -38,7 +38,7 @@ class AlbumSectionHeader extends StatelessWidget {
       leading: albumIcon,
       title: albumName ?? context.l10n.sectionUnknown,
       trailing: directory != null && androidFileUtils.isOnRemovableStorage(directory!)
-          ? Icon(
+          ? const Icon(
               AIcons.removableStorage,
               size: 16,
               color: Color(0xFF757575),

lib/widgets/collection/grid/headers/any.dart

@@ -29,7 +29,7 @@ class CollectionSectionHeader extends StatelessWidget {
             height: height,
             child: header,
           )
-        : SizedBox.shrink();
+        : const SizedBox.shrink();
   }
 
   Widget? _buildHeader(BuildContext context) {

lib/widgets/collection/grid/thumbnail.dart

@@ -66,7 +66,7 @@ class InteractiveThumbnail extends StatelessWidget {
     Navigator.push(
       context,
       TransparentMaterialPageRoute(
-        settings: RouteSettings(name: EntryViewerPage.routeName),
+        settings: const RouteSettings(name: EntryViewerPage.routeName),
         pageBuilder: (c, a, sa) {
           final viewerCollection = CollectionLens(
             source: collection.source,

lib/widgets/collection/thumbnail/decorated.dart

@@ -60,10 +60,10 @@ class DecoratedThumbnail extends StatelessWidget {
 
     return Container(
       decoration: BoxDecoration(
-        border: Border.all(
+        border: Border.fromBorderSide(BorderSide(
           color: borderColor,
           width: borderWidth,
-        ),
+        )),
       ),
       width: tileExtent,
       height: tileExtent,

lib/widgets/collection/thumbnail/error.dart

@@ -43,7 +43,7 @@ class _ErrorThumbnailState extends State<ErrorThumbnail> {
         builder: (context, snapshot) {
           Widget child;
           if (snapshot.connectionState != ConnectionState.done) {
-            child = SizedBox();
+            child = const SizedBox();
           } else {
             final exists = snapshot.data!;
             child = Tooltip(

lib/widgets/collection/thumbnail/overlay.dart

@@ -23,21 +23,21 @@ class ThumbnailEntryOverlay extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final children = [
-      if (entry.hasGps && context.select<ThumbnailThemeData, bool>((t) => t.showLocation)) GpsIcon(),
+      if (entry.hasGps && context.select<ThumbnailThemeData, bool>((t) => t.showLocation)) const GpsIcon(),
       if (entry.isVideo)
         VideoIcon(
           entry: entry,
         )
       else if (entry.isAnimated)
-        AnimatedImageIcon()
+        const AnimatedImageIcon()
       else ...[
-        if (entry.isRaw && context.select<ThumbnailThemeData, bool>((t) => t.showRaw)) RawIcon(),
+        if (entry.isRaw && context.select<ThumbnailThemeData, bool>((t) => t.showRaw)) const RawIcon(),
         if (entry.isMultiPage) MultiPageIcon(entry: entry),
-        if (entry.isGeotiff) GeotiffIcon(),
+        if (entry.isGeotiff) const GeotiffIcon(),
-        if (entry.is360) SphericalImageIcon(),
+        if (entry.is360) const SphericalImageIcon(),
       ]
     ];
-    if (children.isEmpty) return SizedBox.shrink();
+    if (children.isEmpty) return const SizedBox.shrink();
     if (children.length == 1) return children.first;
     return Column(
       mainAxisSize: MainAxisSize.min,
@@ -74,7 +74,7 @@ class ThumbnailSelectionOverlay extends StatelessWidget {
                           icon: selected ? AIcons.selected : AIcons.unselected,
                           size: context.select<ThumbnailThemeData, double>((t) => t.iconSize),
                         )
-                      : SizedBox.shrink();
+                      : const SizedBox.shrink();
                   child = AnimatedSwitcher(
                     duration: duration,
                     switchInCurve: Curves.easeOutBack,
@@ -94,7 +94,7 @@ class ThumbnailSelectionOverlay extends StatelessWidget {
                   return child;
                 },
               )
-            : SizedBox.shrink();
+            : const SizedBox.shrink();
         return AnimatedSwitcher(
           duration: duration,
           child: child,
@@ -130,10 +130,10 @@ class _ThumbnailHighlightOverlayState extends State<ThumbnailHighlightOverlay> {
     return Sweeper(
       builder: (context) => Container(
         decoration: BoxDecoration(
-          border: Border.all(
+          border: Border.fromBorderSide(BorderSide(
             color: Theme.of(context).accentColor,
             width: context.select<ThumbnailThemeData, double>((t) => t.highlightBorderWidth),
-          ),
+          )),
         ),
       ),
       toggledNotifier: _highlightedNotifier,

lib/widgets/common/action_mixins/feedback.dart

@@ -103,7 +103,7 @@ class _ReportOverlayState<T> extends State<ReportOverlay<T>> with SingleTickerPr
             return FadeTransition(
               opacity: _animation,
               child: Container(
-                decoration: BoxDecoration(
+                decoration: const BoxDecoration(
                   gradient: RadialGradient(
                     colors: [
                       Colors.black,

lib/widgets/common/app_bar_subtitle.dart

@@ -34,7 +34,7 @@ class SourceStateAwareAppBarTitle extends StatelessWidget {
                 ),
               ),
               child: sourceState == SourceState.ready
-                  ? SizedBox.shrink()
+                  ? const SizedBox.shrink()
                   : SourceStateSubtitle(
                       source: source,
                     ),
@@ -70,7 +70,7 @@ class SourceStateSubtitle extends StatelessWidget {
     }
     final subtitleStyle = Theme.of(context).textTheme.caption;
     return subtitle == null
-        ? SizedBox.shrink()
+        ? const SizedBox.shrink()
         : Row(
             mainAxisSize: MainAxisSize.min,
             children: [
@@ -78,10 +78,10 @@ class SourceStateSubtitle extends StatelessWidget {
               StreamBuilder<ProgressEvent>(
                 stream: source.progressStream,
                 builder: (context, snapshot) {
-                  if (snapshot.hasError || !snapshot.hasData) return SizedBox.shrink();
+                  if (snapshot.hasError || !snapshot.hasData) return const SizedBox.shrink();
                   final progress = snapshot.data!;
                   return Padding(
-                    padding: EdgeInsetsDirectional.only(start: 8),
+                    padding: const EdgeInsetsDirectional.only(start: 8),
                     child: Text(
                       '${progress.done}/${progress.total}',
                       style: subtitleStyle!.copyWith(color: Colors.white30),

lib/widgets/common/app_bar_title.dart

@@ -17,7 +17,7 @@ class InteractiveAppBarTitle extends StatelessWidget {
       // so that we can also detect taps around the title `Text`
       child: Container(
         alignment: AlignmentDirectional.centerStart,
-        padding: EdgeInsets.symmetric(horizontal: NavigationToolbar.kMiddleSpacing),
+        padding: const EdgeInsets.symmetric(horizontal: NavigationToolbar.kMiddleSpacing),
         color: Colors.transparent,
         height: kToolbarHeight,
         child: child,

lib/widgets/common/basic/draggable_scrollbar.dart

@@ -89,7 +89,7 @@ class DraggableScrollbar extends StatefulWidget {
                 backgroundColor: backgroundColor,
                 child: labelText,
               ),
-              SizedBox(width: 24),
+              const SizedBox(width: 24),
               scrollThumb,
             ],
           );
@@ -117,11 +117,11 @@ class ScrollLabel extends StatelessWidget {
     return FadeTransition(
       opacity: animation,
       child: Container(
-        margin: EdgeInsets.only(right: 12.0),
+        margin: const EdgeInsets.only(right: 12.0),
         child: Material(
           elevation: 4.0,
           color: backgroundColor,
-          borderRadius: BorderRadius.circular(16),
+          borderRadius: const BorderRadius.all(Radius.circular(16)),
           child: child,
         ),
       ),
@@ -386,8 +386,8 @@ class SlideFadeTransition extends StatelessWidget {
       builder: (context, child) => animation.value == 0.0 ? Container() : child!,
       child: SlideTransition(
         position: Tween(
-          begin: Offset(0.3, 0.0),
+          begin: const Offset(0.3, 0.0),
-          end: Offset(0.0, 0.0),
+          end: const Offset(0.0, 0.0),
         ).animate(animation),
         child: FadeTransition(
           opacity: animation,

lib/widgets/common/basic/insets.dart

@@ -17,7 +17,7 @@ class BottomGestureAreaProtector extends StatelessWidget {
           right: 0,
           bottom: 0,
           height: systemGestureBottom,
-          child: AbsorbPointer(),
+          child: const AbsorbPointer(),
         );
       },
     );

lib/widgets/common/basic/link_chip.dart

@@ -9,7 +9,7 @@ class LinkChip extends StatelessWidget {
   final Color? color;
   final TextStyle? textStyle;
 
-  static final borderRadius = BorderRadius.circular(8);
+  static const borderRadius = BorderRadius.all(Radius.circular(8));
 
   const LinkChip({
     Key? key,
@@ -23,7 +23,7 @@ class LinkChip extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return DefaultTextStyle.merge(
-      style: (textStyle ?? TextStyle()).copyWith(color: color),
+      style: (textStyle ?? const TextStyle()).copyWith(color: color),
       child: InkWell(
         borderRadius: borderRadius,
         onTap: () async {
@@ -32,13 +32,13 @@ class LinkChip extends StatelessWidget {
           }
         },
         child: Padding(
-          padding: EdgeInsets.all(8.0),
+          padding: const EdgeInsets.all(8.0),
           child: Row(
             mainAxisSize: MainAxisSize.min,
             children: [
               if (leading != null) ...[
                 leading!,
-                SizedBox(width: 8),
+                const SizedBox(width: 8),
               ],
               Flexible(
                 child: Text(
@@ -48,7 +48,7 @@ class LinkChip extends StatelessWidget {
                   maxLines: 1,
                 ),
               ),
-              SizedBox(width: 8),
+              const SizedBox(width: 8),
               Builder(
                 builder: (context) => Icon(
                   AIcons.openOutside,

lib/widgets/common/basic/menu_row.dart

@@ -24,11 +24,11 @@ class MenuRow extends StatelessWidget {
             opacity: checked! ? 1 : 0,
             child: Icon(AIcons.checked, size: iconSize),
           ),
-          SizedBox(width: 8),
+          const SizedBox(width: 8),
         ],
         if (icon != null) ...[
           Icon(icon, size: iconSize),
-          SizedBox(width: 8),
+          const SizedBox(width: 8),
         ],
         Expanded(child: Text(text)),
       ],

lib/widgets/common/basic/multi_cross_fader.dart

@@ -26,7 +26,7 @@ class _MultiCrossFaderState extends State<MultiCrossFader> {
   void initState() {
     super.initState();
     _first = widget.child;
-    _second = SizedBox();
+    _second = const SizedBox();
   }
 
   @override

lib/widgets/common/basic/query_bar.dart

@@ -30,7 +30,7 @@ class _QueryBarState extends State<QueryBar> {
   @override
   Widget build(BuildContext context) {
     final clearButton = IconButton(
-      icon: Icon(AIcons.clear),
+      icon: const Icon(AIcons.clear),
       onPressed: () {
         _controller.clear();
         filterNotifier.value = '';
@@ -45,7 +45,7 @@ class _QueryBarState extends State<QueryBar> {
           child: TextField(
             controller: _controller,
             decoration: InputDecoration(
-              icon: Padding(
+              icon: const Padding(
                 padding: EdgeInsetsDirectional.only(start: 16),
                 child: Icon(AIcons.search),
               ),
@@ -57,7 +57,7 @@ class _QueryBarState extends State<QueryBar> {
           ),
         ),
         ConstrainedBox(
-          constraints: BoxConstraints(minWidth: 16),
+          constraints: const BoxConstraints(minWidth: 16),
           child: ValueListenableBuilder<TextEditingValue>(
             valueListenable: _controller,
             builder: (context, value, child) => AnimatedSwitcher(
@@ -70,7 +70,7 @@ class _QueryBarState extends State<QueryBar> {
                   child: child,
                 ),
               ),
-              child: value.text.isNotEmpty ? clearButton : SizedBox.shrink(),
+              child: value.text.isNotEmpty ? clearButton : const SizedBox.shrink(),
             ),
           ),
         )

lib/widgets/common/fx/blurred.dart

@@ -40,7 +40,7 @@ class BlurredRRect extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return ClipRRect(
-      borderRadius: BorderRadius.circular(borderRadius),
+      borderRadius: BorderRadius.all(Radius.circular(borderRadius)),
       child: BackdropFilter(
         filter: _filter,
         child: child,

lib/widgets/common/grid/draggable_thumb_label.dart

@@ -17,7 +17,7 @@ class DraggableThumbLabel<T> extends StatelessWidget {
   Widget build(BuildContext context) {
     final sll = context.read<SectionedListLayout<T>>();
     final sectionLayout = sll.getSectionAt(offsetY);
-    if (sectionLayout == null) return SizedBox();
+    if (sectionLayout == null) return const SizedBox();
 
     final section = sll.sections[sectionLayout.sectionKey]!;
     final dy = offsetY - (sectionLayout.minOffset + sectionLayout.headerExtent);
@@ -25,12 +25,12 @@ class DraggableThumbLabel<T> extends StatelessWidget {
     final item = section[itemIndex];
 
     final lines = lineBuilder(context, item);
-    if (lines.isEmpty) return SizedBox();
+    if (lines.isEmpty) return const SizedBox();
 
     return ConstrainedBox(
-      constraints: BoxConstraints(maxWidth: 140),
+      constraints: const BoxConstraints(maxWidth: 140),
       child: Padding(
-        padding: EdgeInsets.symmetric(vertical: 4, horizontal: 8),
+        padding: const EdgeInsets.symmetric(vertical: 4, horizontal: 8),
         child: lines.length > 1
             ? Column(
                 mainAxisSize: MainAxisSize.min,
@@ -44,7 +44,7 @@ class DraggableThumbLabel<T> extends StatelessWidget {
 
   Widget _buildText(String text) => Text(
         text,
-        style: TextStyle(
+        style: const TextStyle(
           color: Colors.black,
         ),
         softWrap: false,

lib/widgets/common/grid/header.dart

@@ -35,7 +35,7 @@ class SectionHeader extends StatelessWidget {
     return Container(
       alignment: AlignmentDirectional.centerStart,
       padding: padding,
-      constraints: BoxConstraints(minHeight: leadingDimension),
+      constraints: const BoxConstraints(minHeight: leadingDimension),
       child: GestureDetector(
         onTap: selectable ? () => _toggleSectionSelection(context) : null,
         child: Text.rich(
@@ -158,12 +158,12 @@ class _SectionSelectableLeading extends StatelessWidget {
                     ),
                     child: IconButton(
                       iconSize: 26,
-                      padding: EdgeInsets.only(top: 1),
+                      padding: const EdgeInsets.only(top: 1),
                       alignment: AlignmentDirectional.topStart,
                       icon: Icon(selected ? AIcons.selected : AIcons.unselected),
                       onPressed: onPressed,
                       tooltip: selected ? context.l10n.collectionDeselectSectionTooltip : context.l10n.collectionSelectSectionTooltip,
-                      constraints: BoxConstraints(
+                      constraints: const BoxConstraints(
                         minHeight: leadingDimension,
                         minWidth: leadingDimension,
                       ),
@@ -208,5 +208,5 @@ class _SectionSelectableLeading extends StatelessWidget {
     );
   }
 
-  Widget _buildBrowsing(BuildContext context) => browsingBuilder?.call(context) ?? SizedBox(height: leadingDimension);
+  Widget _buildBrowsing(BuildContext context) => browsingBuilder?.call(context) ?? const SizedBox(height: leadingDimension);
 }

lib/widgets/common/grid/section_layout.dart

@@ -106,7 +106,7 @@ abstract class SectionedListLayoutProvider<T> extends StatelessWidget {
     bool animate,
   ) {
     if (sectionChildIndex == 0) {
-      final header = headerExtent > 0 ? buildHeader(context, sectionKey, headerExtent) : SizedBox.shrink();
+      final header = headerExtent > 0 ? buildHeader(context, sectionKey, headerExtent) : const SizedBox.shrink();
       return animate ? _buildAnimation(sectionGridIndex, header) : header;
     }
     sectionChildIndex--;

lib/widgets/common/grid/sliver.dart

@@ -26,7 +26,7 @@ class SectionedListSliver<T> extends StatelessWidget {
         (context, index) {
           if (index >= childCount) return null;
           final sectionLayout = sectionLayouts.firstWhereOrNull((section) => section.hasChild(index));
-          return sectionLayout?.builder(context, index) ?? SizedBox.shrink();
+          return sectionLayout?.builder(context, index) ?? const SizedBox.shrink();
         },
         childCount: childCount,
         addAutomaticKeepAlives: false,

lib/widgets/common/identity/aves_expansion_tile.dart

@@ -35,7 +35,7 @@ class AvesExpansionTile extends StatelessWidget {
       titleChild = Row(
         children: [
           leading!,
-          SizedBox(width: 8),
+          const SizedBox(width: 8),
           Expanded(child: titleChild),
         ],
       );
@@ -52,15 +52,15 @@ class AvesExpansionTile extends StatelessWidget {
         title: titleChild,
         expandable: enabled,
         initiallyExpanded: initiallyExpanded,
-        finalPadding: EdgeInsets.symmetric(vertical: 6.0),
+        finalPadding: const EdgeInsets.symmetric(vertical: 6.0),
         baseColor: Colors.grey.shade900,
         expandedColor: Colors.grey[850],
         shadowColor: Theme.of(context).shadowColor,
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
-            Divider(thickness: 1, height: 1),
+            const Divider(thickness: 1, height: 1),
-            SizedBox(height: 4),
+            const SizedBox(height: 4),
             if (enabled) ...children,
           ],
         ),

lib/widgets/common/identity/aves_filter_chip.dart

@@ -65,7 +65,7 @@ class AvesFilterChip extends StatefulWidget {
       FocusManager.instance.primaryFocus?.unfocus();
 
       final overlay = Overlay.of(context)!.context.findRenderObject() as RenderBox;
-      final touchArea = Size(40, 40);
+      const touchArea = Size(40, 40);
       final selectedAction = await showMenu<ChipAction>(
         context: context,
         position: RelativeRect.fromRect(tapPosition & touchArea, Offset.zero & overlay.size),
@@ -186,7 +186,7 @@ class _AvesFilterChipState extends State<AvesFilterChip> {
           color: Colors.black54,
           child: DefaultTextStyle(
             style: Theme.of(context).textTheme.bodyText2!.copyWith(
-              shadows: [Constants.embossShadow],
+                  shadows: Constants.embossShadows,
                 ),
             child: content,
           ),
@@ -194,9 +194,9 @@ class _AvesFilterChipState extends State<AvesFilterChip> {
       );
     }
 
-    final borderRadius = widget.borderRadius ?? BorderRadius.circular(AvesFilterChip.defaultRadius);
+    final borderRadius = widget.borderRadius ?? const BorderRadius.all(Radius.circular(AvesFilterChip.defaultRadius));
     Widget chip = Container(
-      constraints: BoxConstraints(
+      constraints: const BoxConstraints(
         minWidth: AvesFilterChip.minChipWidth,
         maxWidth: AvesFilterChip.maxChipWidth,
         minHeight: AvesFilterChip.minChipHeight,
@@ -237,15 +237,15 @@ class _AvesFilterChipState extends State<AvesFilterChip> {
                     }
                     return DecoratedBox(
                       decoration: BoxDecoration(
-                        border: Border.all(
+                        border: Border.fromBorderSide(BorderSide(
                           color: _outlineColor,
                           width: AvesFilterChip.outlineWidth,
-                        ),
+                        )),
                         borderRadius: borderRadius,
                       ),
                       position: DecorationPosition.foreground,
                       child: Padding(
-                        padding: EdgeInsets.symmetric(vertical: 8),
+                        padding: const EdgeInsets.symmetric(vertical: 8),
                         child: content,
                       ),
                     );
@@ -263,7 +263,7 @@ class _AvesFilterChipState extends State<AvesFilterChip> {
         tag: filter,
         transitionOnUserGestures: true,
         child: DefaultTextStyle(
-          style: TextStyle(),
+          style: const TextStyle(),
           child: chip,
         ),
       );

lib/widgets/common/identity/aves_icons.dart

@@ -150,11 +150,11 @@ class OverlayIcon extends StatelessWidget {
     );
 
     return Container(
-      margin: EdgeInsets.all(1),
+      margin: const EdgeInsets.all(1),
       padding: text != null ? EdgeInsets.only(right: size / 4) : null,
       decoration: BoxDecoration(
-        color: Color(0xBB000000),
+        color: const Color(0xBB000000),
-        borderRadius: BorderRadius.circular(size),
+        borderRadius: BorderRadius.all(Radius.circular(size)),
       ),
       child: text == null
           ? iconBox
@@ -163,7 +163,7 @@ class OverlayIcon extends StatelessWidget {
               crossAxisAlignment: CrossAxisAlignment.center,
               children: [
                 iconBox,
-                SizedBox(width: 2),
+                const SizedBox(width: 2),
                 Text(text!),
               ],
             ),
@@ -187,7 +187,7 @@ class IconUtils {
             data: context.read<MediaQueryData>().copyWith(textScaleFactor: 1.0),
             child: DecoratedIcon(
               icon,
-              shadows: [Constants.embossShadow],
+              shadows: Constants.embossShadows,
               size: size,
             ),
           )

lib/widgets/common/identity/empty.dart

@@ -25,11 +25,11 @@ class EmptyContent extends StatelessWidget {
               size: 64,
               color: color,
             ),
-            SizedBox(height: 16)
+            const SizedBox(height: 16)
           ],
           Text(
             text,
-            style: TextStyle(
+            style: const TextStyle(
               color: color,
               fontSize: 22,
             ),

lib/widgets/common/identity/highlight_title.dart

@@ -25,7 +25,7 @@ class HighlightTitle extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final style = TextStyle(
-      shadows: [
+      shadows: const [
         Shadow(
           color: Colors.black,
           offset: Offset(1, 1),
@@ -34,7 +34,7 @@ class HighlightTitle extends StatelessWidget {
       ],
       fontSize: fontSize,
       letterSpacing: 1.0,
-      fontFeatures: [FontFeature.enable('smcp')],
+      fontFeatures: const [FontFeature.enable('smcp')],
     );
 
     return Align(
@@ -45,7 +45,7 @@ class HighlightTitle extends StatelessWidget {
                 color: enabled ? color ?? stringToColor(title) : disabledColor,
               )
             : null,
-        margin: EdgeInsets.symmetric(vertical: 4.0),
+        margin: const EdgeInsets.symmetric(vertical: 4.0),
         child: selectable
             ? SelectableText(
                 title,

lib/widgets/common/identity/scroll_thumb.dart

@@ -10,20 +10,20 @@ ScrollThumbBuilder avesScrollThumbBuilder({
   required Color backgroundColor,
 }) {
   final scrollThumb = Container(
-    decoration: BoxDecoration(
+    decoration: const BoxDecoration(
       color: Colors.black26,
-      borderRadius: BorderRadius.circular(12),
+      borderRadius: BorderRadius.all(Radius.circular(12)),
     ),
     height: height,
-    margin: EdgeInsets.only(right: .5),
+    margin: const EdgeInsets.only(right: .5),
-    padding: EdgeInsets.all(2),
+    padding: const EdgeInsets.all(2),
     child: ClipPath(
       clipper: ArrowClipper(),
       child: Container(
         width: 20.0,
         decoration: BoxDecoration(
           color: backgroundColor,
-          borderRadius: BorderRadius.circular(12),
+          borderRadius: const BorderRadius.all(Radius.circular(12)),
         ),
       ),
     ),

lib/widgets/common/magnifier/controller/controller.dart

@@ -28,7 +28,7 @@ class MagnifierController {
     _currentState = initial;
     _setState(initial);
 
-    final _initialScaleState = ScaleStateChange(state: ScaleState.initial, source: ChangeSource.internal);
+    const _initialScaleState = ScaleStateChange(state: ScaleState.initial, source: ChangeSource.internal);
     previousScaleState = _initialScaleState;
     _currentScaleState = _initialScaleState;
     _setScaleState(_initialScaleState);

lib/widgets/common/magnifier/core/core.dart

@@ -302,7 +302,7 @@ class _CenterWithOriginalSizeDelegate extends SingleChildLayoutDelegate {
 
   @override
   BoxConstraints getConstraintsForChild(BoxConstraints constraints) {
-    return applyScale ? BoxConstraints.tight(subjectSize) : BoxConstraints();
+    return applyScale ? BoxConstraints.tight(subjectSize) : const BoxConstraints();
   }
 
   @override

lib/widgets/common/magnifier/pan/corner_hit_detector.dart

@@ -14,7 +14,7 @@ mixin CornerHitDetector on MagnifierControllerDelegate {
     final childWidth = scaleBoundaries.childSize.width * scale!;
     final viewportWidth = scaleBoundaries.viewportSize.width;
     if (viewportWidth + precisionErrorTolerance >= childWidth) {
-      return _CornerHit(true, true);
+      return const _CornerHit(true, true);
     }
     final x = -position.dx;
     final cornersX = this.cornersX();
@@ -25,7 +25,7 @@ mixin CornerHitDetector on MagnifierControllerDelegate {
     final childHeight = scaleBoundaries.childSize.height * scale!;
     final viewportHeight = scaleBoundaries.viewportSize.height;
     if (viewportHeight + precisionErrorTolerance >= childHeight) {
-      return _CornerHit(true, true);
+      return const _CornerHit(true, true);
     }
     final y = -position.dy;
     final cornersY = this.cornersY();

lib/widgets/common/scaling.dart

@@ -206,7 +206,7 @@ class _ScaleOverlayState extends State<ScaleOverlay> {
                       ],
                     ),
                   )
-                : BoxDecoration(
+                : const BoxDecoration(
                     // provide dummy gradient to lerp to the other one during animation
                     gradient: RadialGradient(
                       colors: [
@@ -237,7 +237,7 @@ class _ScaleOverlayState extends State<ScaleOverlay> {
                       left: clampedCenter.dx - extent / 2,
                       top: clampedCenter.dy - extent / 2,
                       child: DefaultTextStyle(
-                        style: TextStyle(),
+                        style: const TextStyle(),
                         child: child,
                       ),
                     ),

lib/widgets/debug/android_apps.dart

@@ -30,15 +30,15 @@ class _DebugAndroidAppSectionState extends State<DebugAndroidAppSection> with Au
       title: 'Android Apps',
       children: [
         Padding(
-          padding: EdgeInsets.only(left: 8, right: 8, bottom: 8),
+          padding: const EdgeInsets.only(left: 8, right: 8, bottom: 8),
           child: FutureBuilder<Set<Package>>(
             future: _loader,
             builder: (context, snapshot) {
               if (snapshot.hasError) return Text(snapshot.error.toString());
-              if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+              if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
               final packages = snapshot.data!.toList()..sort((a, b) => compareAsciiUpperCase(a.packageName, b.packageName));
               final enabledTheme = IconTheme.of(context);
-              final disabledTheme = enabledTheme.merge(IconThemeData(opacity: .2));
+              final disabledTheme = enabledTheme.merge(const IconThemeData(opacity: .2));
               return Column(
                 crossAxisAlignment: CrossAxisAlignment.start,
                 children: packages.map((package) {
@@ -64,7 +64,7 @@ class _DebugAndroidAppSectionState extends State<DebugAndroidAppSection> with Au
                           alignment: PlaceholderAlignment.middle,
                           child: IconTheme(
                             data: package.categoryLauncher ? enabledTheme : disabledTheme,
-                            child: Icon(
+                            child: const Icon(
                               Icons.launch_outlined,
                               size: iconSize,
                             ),
@@ -74,7 +74,7 @@ class _DebugAndroidAppSectionState extends State<DebugAndroidAppSection> with Au
                           alignment: PlaceholderAlignment.middle,
                           child: IconTheme(
                             data: package.isSystem ? enabledTheme : disabledTheme,
-                            child: Icon(
+                            child: const Icon(
                               Icons.android,
                               size: iconSize,
                             ),

lib/widgets/debug/android_dirs.dart

@@ -27,12 +27,12 @@ class _DebugAndroidDirSectionState extends State<DebugAndroidDirSection> with Au
       title: 'Android Dirs',
       children: [
         Padding(
-          padding: EdgeInsets.only(left: 8, right: 8, bottom: 8),
+          padding: const EdgeInsets.only(left: 8, right: 8, bottom: 8),
           child: FutureBuilder<Map>(
             future: _loader,
             builder: (context, snapshot) {
               if (snapshot.hasError) return Text(snapshot.error.toString());
-              if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+              if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
               final data = SplayTreeMap.of(snapshot.data!.map((k, v) => MapEntry(k.toString(), v?.toString() ?? 'null')));
               return InfoRowGroup(data);
             },

lib/widgets/debug/android_env.dart

@@ -27,12 +27,12 @@ class _DebugAndroidEnvironmentSectionState extends State<DebugAndroidEnvironment
       title: 'Android Environment',
       children: [
         Padding(
-          padding: EdgeInsets.only(left: 8, right: 8, bottom: 8),
+          padding: const EdgeInsets.only(left: 8, right: 8, bottom: 8),
           child: FutureBuilder<Map>(
             future: _loader,
             builder: (context, snapshot) {
               if (snapshot.hasError) return Text(snapshot.error.toString());
-              if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+              if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
               final data = SplayTreeMap.of(snapshot.data!.map((k, v) => MapEntry(k.toString(), v?.toString() ?? 'null')));
               return InfoRowGroup(data);
             },

lib/widgets/debug/app_debug_page.dart

@@ -35,11 +35,11 @@ class _AppDebugPageState extends State<AppDebugPage> {
     return MediaQueryDataProvider(
       child: Scaffold(
         appBar: AppBar(
-          title: Text('Debug'),
+          title: const Text('Debug'),
         ),
         body: SafeArea(
           child: ListView(
-            padding: EdgeInsets.all(8),
+            padding: const EdgeInsets.all(8),
             children: [
               _buildGeneralTabView(),
               DebugAndroidAppSection(),
@@ -65,7 +65,7 @@ class _AppDebugPageState extends State<AppDebugPage> {
     return AvesExpansionTile(
       title: 'General',
       children: [
-        Padding(
+        const Padding(
           padding: EdgeInsets.all(8),
           child: Text('Time dilation'),
         ),
@@ -91,11 +91,11 @@ class _AppDebugPageState extends State<AppDebugPage> {
             }
             setState(() {});
           },
-          title: Text('Show tasks overlay'),
+          title: const Text('Show tasks overlay'),
         ),
-        Divider(),
+        const Divider(),
         Padding(
-          padding: EdgeInsets.only(left: 8, right: 8, bottom: 8),
+          padding: const EdgeInsets.only(left: 8, right: 8, bottom: 8),
           child: InfoRowGroup(
             {
               'All entries': '${source.allEntries.length}',

lib/widgets/debug/cache.dart

@@ -18,7 +18,7 @@ class _DebugCacheSectionState extends State<DebugCacheSection> with AutomaticKee
       title: 'Cache',
       children: [
         Padding(
-          padding: EdgeInsets.symmetric(horizontal: 8),
+          padding: const EdgeInsets.symmetric(horizontal: 8),
           child: Column(
             children: [
               Row(
@@ -26,14 +26,14 @@ class _DebugCacheSectionState extends State<DebugCacheSection> with AutomaticKee
                   Expanded(
                     child: Text('Image cache:\n\t${imageCache!.currentSize}/${imageCache!.maximumSize} items\n\t${formatFilesize(imageCache!.currentSizeBytes)}/${formatFilesize(imageCache!.maximumSizeBytes)}'),
                   ),
-                  SizedBox(width: 8),
+                  const SizedBox(width: 8),
                   ElevatedButton(
                     onPressed: () {
                       imageCache!.clear();
 
                       setState(() {});
                     },
-                    child: Text('Clear'),
+                    child: const Text('Clear'),
                   ),
                 ],
               ),
@@ -42,26 +42,26 @@ class _DebugCacheSectionState extends State<DebugCacheSection> with AutomaticKee
                   Expanded(
                     child: Text('SVG cache: ${PictureProvider.cache.count} items'),
                   ),
-                  SizedBox(width: 8),
+                  const SizedBox(width: 8),
                   ElevatedButton(
                     onPressed: () {
                       PictureProvider.cache.clear();
 
                       setState(() {});
                     },
-                    child: Text('Clear'),
+                    child: const Text('Clear'),
                   ),
                 ],
               ),
               Row(
                 children: [
-                  Expanded(
+                  const Expanded(
                     child: Text('Glide disk cache: ?'),
                   ),
-                  SizedBox(width: 8),
+                  const SizedBox(width: 8),
                   ElevatedButton(
                     onPressed: imageFileService.clearSizedThumbnailDiskCache,
-                    child: Text('Clear'),
+                    child: const Text('Clear'),
                   ),
                 ],
               ),

lib/widgets/debug/database.dart

@@ -35,7 +35,7 @@ class _DebugAppDatabaseSectionState extends State<DebugAppDatabaseSection> with
       title: 'Database',
       children: [
         Padding(
-          padding: EdgeInsets.symmetric(horizontal: 8),
+          padding: const EdgeInsets.symmetric(horizontal: 8),
           child: Column(
             children: [
               FutureBuilder<int>(
@@ -43,17 +43,17 @@ class _DebugAppDatabaseSectionState extends State<DebugAppDatabaseSection> with
                 builder: (context, snapshot) {
                   if (snapshot.hasError) return Text(snapshot.error.toString());
 
-                  if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+                  if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
 
                   return Row(
                     children: [
                       Expanded(
                         child: Text('DB file size: ${formatFilesize(snapshot.data!)}'),
                       ),
-                      SizedBox(width: 8),
+                      const SizedBox(width: 8),
                       ElevatedButton(
                         onPressed: () => metadataDb.reset().then((_) => _startDbReport()),
-                        child: Text('Reset'),
+                        child: const Text('Reset'),
                       ),
                     ],
                   );
@@ -64,17 +64,17 @@ class _DebugAppDatabaseSectionState extends State<DebugAppDatabaseSection> with
                 builder: (context, snapshot) {
                   if (snapshot.hasError) return Text(snapshot.error.toString());
 
-                  if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+                  if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
 
                   return Row(
                     children: [
                       Expanded(
                         child: Text('entry rows: ${snapshot.data!.length}'),
                       ),
-                      SizedBox(width: 8),
+                      const SizedBox(width: 8),
                       ElevatedButton(
                         onPressed: () => metadataDb.clearEntries().then((_) => _startDbReport()),
-                        child: Text('Clear'),
+                        child: const Text('Clear'),
                       ),
                     ],
                   );
@@ -85,17 +85,17 @@ class _DebugAppDatabaseSectionState extends State<DebugAppDatabaseSection> with
                 builder: (context, snapshot) {
                   if (snapshot.hasError) return Text(snapshot.error.toString());
 
-                  if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+                  if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
 
                   return Row(
                     children: [
                       Expanded(
                         child: Text('date rows: ${snapshot.data!.length}'),
                       ),
-                      SizedBox(width: 8),
+                      const SizedBox(width: 8),
                       ElevatedButton(
                         onPressed: () => metadataDb.clearDates().then((_) => _startDbReport()),
-                        child: Text('Clear'),
+                        child: const Text('Clear'),
                       ),
                     ],
                   );
@@ -106,17 +106,17 @@ class _DebugAppDatabaseSectionState extends State<DebugAppDatabaseSection> with
                 builder: (context, snapshot) {
                   if (snapshot.hasError) return Text(snapshot.error.toString());
 
-                  if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+                  if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
 
                   return Row(
                     children: [
                       Expanded(
                         child: Text('metadata rows: ${snapshot.data!.length}'),
                       ),
-                      SizedBox(width: 8),
+                      const SizedBox(width: 8),
                       ElevatedButton(
                         onPressed: () => metadataDb.clearMetadataEntries().then((_) => _startDbReport()),
-                        child: Text('Clear'),
+                        child: const Text('Clear'),
                       ),
                     ],
                   );
@@ -127,17 +127,17 @@ class _DebugAppDatabaseSectionState extends State<DebugAppDatabaseSection> with
                 builder: (context, snapshot) {
                   if (snapshot.hasError) return Text(snapshot.error.toString());
 
-                  if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+                  if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
 
                   return Row(
                     children: [
                       Expanded(
                         child: Text('address rows: ${snapshot.data!.length}'),
                       ),
-                      SizedBox(width: 8),
+                      const SizedBox(width: 8),
                       ElevatedButton(
                         onPressed: () => metadataDb.clearAddresses().then((_) => _startDbReport()),
-                        child: Text('Clear'),
+                        child: const Text('Clear'),
                       ),
                     ],
                   );
@@ -148,17 +148,17 @@ class _DebugAppDatabaseSectionState extends State<DebugAppDatabaseSection> with
                 builder: (context, snapshot) {
                   if (snapshot.hasError) return Text(snapshot.error.toString());
 
-                  if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+                  if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
 
                   return Row(
                     children: [
                       Expanded(
                         child: Text('favourite rows: ${snapshot.data!.length} (${favourites.count} in memory)'),
                       ),
-                      SizedBox(width: 8),
+                      const SizedBox(width: 8),
                       ElevatedButton(
                         onPressed: () => favourites.clear().then((_) => _startDbReport()),
-                        child: Text('Clear'),
+                        child: const Text('Clear'),
                       ),
                     ],
                   );
@@ -169,17 +169,17 @@ class _DebugAppDatabaseSectionState extends State<DebugAppDatabaseSection> with
                 builder: (context, snapshot) {
                   if (snapshot.hasError) return Text(snapshot.error.toString());
 
-                  if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+                  if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
 
                   return Row(
                     children: [
                       Expanded(
                         child: Text('cover rows: ${snapshot.data!.length} (${covers.count} in memory)'),
                       ),
-                      SizedBox(width: 8),
+                      const SizedBox(width: 8),
                       ElevatedButton(
                         onPressed: () => covers.clear().then((_) => _startDbReport()),
-                        child: Text('Clear'),
+                        child: const Text('Clear'),
                       ),
                     ],
                   );

lib/widgets/debug/firebase.dart

@@ -12,26 +12,26 @@ class DebugFirebaseSection extends StatelessWidget {
       title: 'Firebase',
       children: [
         Padding(
-          padding: EdgeInsets.symmetric(horizontal: 8),
+          padding: const EdgeInsets.symmetric(horizontal: 8),
           child: Row(
             children: [
               ElevatedButton(
                 onPressed: FirebaseCrashlytics.instance.crash,
-                child: Text('Crash'),
+                child: const Text('Crash'),
               ),
-              SizedBox(width: 8),
+              const SizedBox(width: 8),
               ElevatedButton(
                 onPressed: () => FirebaseAnalytics().logEvent(
                   name: 'debug_test',
                   parameters: {'time': DateTime.now().toIso8601String()},
                 ),
-                child: Text('Send event'),
+                child: const Text('Send event'),
               ),
             ],
           ),
         ),
         Padding(
-          padding: EdgeInsets.only(left: 8, right: 8, bottom: 8),
+          padding: const EdgeInsets.only(left: 8, right: 8, bottom: 8),
           child: InfoRowGroup({
             'Firebase data collection enabled': '${Firebase.app().isAutomaticDataCollectionEnabled}',
             'Crashlytics collection enabled': '${FirebaseCrashlytics.instance.isCrashlyticsCollectionEnabled}',

lib/widgets/debug/overlay.dart

@@ -6,17 +6,17 @@ class DebugTaskQueueOverlay extends StatelessWidget {
   Widget build(BuildContext context) {
     return IgnorePointer(
       child: DefaultTextStyle(
-        style: TextStyle(),
+        style: const TextStyle(),
         child: Align(
           alignment: AlignmentDirectional.bottomStart,
           child: SafeArea(
             child: Container(
               color: Colors.indigo.shade900.withAlpha(0xCC),
-              padding: EdgeInsets.all(8),
+              padding: const EdgeInsets.all(8),
               child: StreamBuilder<QueueState>(
                   stream: servicePolicy.queueStream,
                   builder: (context, snapshot) {
-                    if (snapshot.hasError) return SizedBox.shrink();
+                    if (snapshot.hasError) return const SizedBox.shrink();
                     final queuedEntries = <MapEntry<dynamic, int>>[];
                     if (snapshot.hasData) {
                       final state = snapshot.data!;

lib/widgets/debug/settings.dart

@@ -18,19 +18,19 @@ class DebugSettingsSection extends StatelessWidget {
           title: 'Settings',
           children: [
             Padding(
-              padding: EdgeInsets.symmetric(horizontal: 8),
+              padding: const EdgeInsets.symmetric(horizontal: 8),
               child: ElevatedButton(
                 onPressed: () => settings.reset(),
-                child: Text('Reset'),
+                child: const Text('Reset'),
               ),
             ),
             SwitchListTile(
               value: settings.hasAcceptedTerms,
               onChanged: (v) => settings.hasAcceptedTerms = v,
-              title: Text('hasAcceptedTerms'),
+              title: const Text('hasAcceptedTerms'),
             ),
             Padding(
-              padding: EdgeInsets.only(left: 8, right: 8, bottom: 8),
+              padding: const EdgeInsets.only(left: 8, right: 8, bottom: 8),
               child: InfoRowGroup({
                 'tileExtent - Collection': '${settings.getTileExtent(CollectionPage.routeName)}',
                 'tileExtent - Albums': '${settings.getTileExtent(AlbumListPage.routeName)}',

lib/widgets/debug/storage.dart

@@ -33,11 +33,11 @@ class _DebugStorageSectionState extends State<DebugStorageSection> with Automati
           final freeSpace = _freeSpaceByVolume[v.path];
           return [
             Padding(
-              padding: EdgeInsets.all(8),
+              padding: const EdgeInsets.all(8),
               child: Text(v.path),
             ),
             Padding(
-              padding: EdgeInsets.symmetric(horizontal: 8),
+              padding: const EdgeInsets.symmetric(horizontal: 8),
               child: InfoRowGroup({
                 'description': '${v.getDescription(context)}',
                 'isPrimary': '${v.isPrimary}',
@@ -46,7 +46,7 @@ class _DebugStorageSectionState extends State<DebugStorageSection> with Automati
                 if (freeSpace != null) 'freeSpace': formatFilesize(freeSpace),
               }),
             ),
-            Divider(),
+            const Divider(),
           ];
         })
       ],

lib/widgets/dialogs/add_shortcut_dialog.dart

@@ -67,11 +67,11 @@ class _AddShortcutDialogState extends State<AddShortcutDialog> {
               if (_coverEntry != null)
                 Container(
                   alignment: Alignment.center,
-                  padding: EdgeInsets.only(top: 16),
+                  padding: const EdgeInsets.only(top: 16),
                   child: _buildCover(_coverEntry!, extent),
                 ),
               Padding(
-                padding: EdgeInsets.symmetric(vertical: 8, horizontal: 24),
+                padding: const EdgeInsets.symmetric(vertical: 8, horizontal: 24),
                 child: TextField(
                   controller: _nameController,
                   decoration: InputDecoration(
@@ -109,7 +109,7 @@ class _AddShortcutDialogState extends State<AddShortcutDialog> {
     return GestureDetector(
       onTap: _pickEntry,
       child: ClipRRect(
-        borderRadius: BorderRadius.circular(32),
+        borderRadius: const BorderRadius.all(Radius.circular(32)),
         child: SizedBox(
           width: extent,
           height: extent,
@@ -131,7 +131,7 @@ class _AddShortcutDialogState extends State<AddShortcutDialog> {
     final entry = await Navigator.push(
       context,
       MaterialPageRoute(
-        settings: RouteSettings(name: ItemPickDialog.routeName),
+        settings: const RouteSettings(name: ItemPickDialog.routeName),
         builder: (context) => ItemPickDialog(
           CollectionLens(
             source: collection.source,

lib/widgets/dialogs/aves_dialog.dart

@@ -20,7 +20,7 @@ class AvesDialog extends AlertDialog {
           title: title != null
               ? Padding(
                   // padding to avoid transparent border overlapping
-                  padding: EdgeInsets.symmetric(horizontal: borderWidth),
+                  padding: const EdgeInsets.symmetric(horizontal: borderWidth),
                   child: DialogTitle(title: title),
                 )
               : null,
@@ -32,7 +32,7 @@ class AvesDialog extends AlertDialog {
           content: scrollableContent != null
               ? Container(
                   // padding to avoid transparent border overlapping
-                  padding: EdgeInsets.symmetric(horizontal: borderWidth),
+                  padding: const EdgeInsets.symmetric(horizontal: borderWidth),
                   // workaround because the dialog tries
                   // to size itself to the content intrinsic size,
                   // but the `ListView` viewport does not have one
@@ -51,12 +51,12 @@ class AvesDialog extends AlertDialog {
                   ),
                 )
               : content,
-          contentPadding: scrollableContent != null ? EdgeInsets.zero : EdgeInsets.fromLTRB(24, 20, 24, 0),
+          contentPadding: scrollableContent != null ? EdgeInsets.zero : const EdgeInsets.fromLTRB(24, 20, 24, 0),
           actions: actions,
-          actionsPadding: EdgeInsets.symmetric(horizontal: 8),
+          actionsPadding: const EdgeInsets.symmetric(horizontal: 8),
           shape: RoundedRectangleBorder(
             side: Divider.createBorderSide(context, width: borderWidth),
-            borderRadius: BorderRadius.circular(24),
+            borderRadius: const BorderRadius.all(Radius.circular(24)),
           ),
         );
 }
@@ -78,7 +78,7 @@ class DialogTitle extends StatelessWidget {
       ),
       child: Text(
         title,
-        style: TextStyle(
+        style: const TextStyle(
           fontWeight: FontWeight.normal,
           fontFeatures: [FontFeature.enable('smcp')],
         ),

lib/widgets/dialogs/cover_selection_dialog.dart

@@ -74,11 +74,11 @@ class _CoverSelectionDialogState extends State<CoverSelectionDialog> {
                     title: isCustom
                         ? Row(children: [
                             title,
-                            Spacer(),
+                            const Spacer(),
                             IconButton(
                               onPressed: _isCustom ? _pickEntry : null,
                               tooltip: 'Change',
-                              icon: Icon(AIcons.setCover),
+                              icon: const Icon(AIcons.setCover),
                             ),
                           ])
                         : title,
@@ -87,7 +87,7 @@ class _CoverSelectionDialogState extends State<CoverSelectionDialog> {
               ),
               Container(
                 alignment: Alignment.center,
-                padding: EdgeInsets.only(bottom: 16),
+                padding: const EdgeInsets.only(bottom: 16),
                 child: DecoratedFilterChip(
                   filter: filter,
                   extent: extent,
@@ -116,7 +116,7 @@ class _CoverSelectionDialogState extends State<CoverSelectionDialog> {
     final entry = await Navigator.push(
       context,
       MaterialPageRoute(
-        settings: RouteSettings(name: ItemPickDialog.routeName),
+        settings: const RouteSettings(name: ItemPickDialog.routeName),
         builder: (context) => ItemPickDialog(
           CollectionLens(
             source: context.read<CollectionSource>(),

lib/widgets/dialogs/create_album_dialog.dart

@@ -50,12 +50,12 @@ class _CreateAlbumDialogState extends State<CreateAlbumDialog> {
       final otherVolumes = (byPrimary[false] ?? [])..sort(compare);
       volumeTiles.addAll([
         Padding(
-          padding: AvesDialog.contentHorizontalPadding + EdgeInsets.only(top: 20),
+          padding: AvesDialog.contentHorizontalPadding + const EdgeInsets.only(top: 20),
           child: Text(context.l10n.newAlbumDialogStorageLabel),
         ),
         ...primaryVolumes.map((volume) => _buildVolumeTile(context, volume)),
         ...otherVolumes.map((volume) => _buildVolumeTile(context, volume)),
-        SizedBox(height: 8),
+        const SizedBox(height: 8),
       ]);
     }
 
@@ -66,7 +66,7 @@ class _CreateAlbumDialogState extends State<CreateAlbumDialog> {
       scrollableContent: [
         ...volumeTiles,
         Padding(
-          padding: AvesDialog.contentHorizontalPadding + EdgeInsets.only(bottom: 8),
+          padding: AvesDialog.contentHorizontalPadding + const EdgeInsets.only(bottom: 8),
           child: ValueListenableBuilder<bool>(
               valueListenable: _existsNotifier,
               builder: (context, exists, child) {

lib/widgets/dialogs/item_pick_dialog.dart

@@ -38,7 +38,7 @@ class _ItemPickDialogState extends State<ItemPickDialog> {
               bottom: false,
               child: ChangeNotifierProvider<CollectionLens>.value(
                 value: collection,
-                child: CollectionGrid(
+                child: const CollectionGrid(
                   settingsRouteKey: CollectionPage.routeName,
                 ),
               ),

lib/widgets/drawer/album_tile.dart

@@ -23,7 +23,7 @@ class AlbumTile extends StatelessWidget {
       ),
       title: displayName,
       trailing: androidFileUtils.isOnRemovableStorage(album)
-          ? Icon(
+          ? const Icon(
               AIcons.removableStorage,
               size: 16,
               color: Colors.grey,

lib/widgets/drawer/app_drawer.dart

@@ -54,12 +54,12 @@ class _AppDrawerState extends State<AppDrawer> {
       if (showVideos) videoTile,
       if (showFavourites) favouriteTile,
       _buildSpecialAlbumSection(),
-      Divider(),
+      const Divider(),
       albumListTile,
       countryListTile,
       tagListTile,
       if (!kReleaseMode) ...[
-        Divider(),
+        const Divider(),
         debugTile,
       ],
     ];
@@ -101,7 +101,7 @@ class _AppDrawerState extends State<AppDrawer> {
     }
 
     return Container(
-      padding: EdgeInsets.only(left: 16, top: 16, right: 16, bottom: 8),
+      padding: const EdgeInsets.only(left: 16, top: 16, right: 16, bottom: 8),
       color: Theme.of(context).accentColor,
       child: SafeArea(
         bottom: false,
@@ -114,10 +114,10 @@ class _AppDrawerState extends State<AppDrawer> {
                 spacing: 16,
                 crossAxisAlignment: WrapCrossAlignment.center,
                 children: [
-                  AvesLogo(size: 64),
+                  const AvesLogo(size: 64),
                   Text(
                     context.l10n.appName,
-                    style: TextStyle(
+                    style: const TextStyle(
                       fontSize: 44,
                       fontWeight: FontWeight.w300,
                       letterSpacing: 1.0,
@@ -127,7 +127,7 @@ class _AppDrawerState extends State<AppDrawer> {
                 ],
               ),
             ),
-            SizedBox(height: 8),
+            const SizedBox(height: 8),
             OutlinedButtonTheme(
               data: OutlinedButtonThemeData(
                 style: ButtonStyle(
@@ -140,9 +140,9 @@ class _AppDrawerState extends State<AppDrawer> {
                 runSpacing: 8,
                 children: [
                   OutlinedButton.icon(
-                    key: Key('drawer-about-button'),
+                    key: const Key('drawer-about-button'),
                     onPressed: () => goTo(AboutPage.routeName, (_) => AboutPage()),
-                    icon: Icon(AIcons.info),
+                    icon: const Icon(AIcons.info),
                     label: Row(
                       crossAxisAlignment: CrossAxisAlignment.start,
                       children: [
@@ -156,11 +156,11 @@ class _AppDrawerState extends State<AppDrawer> {
                               duration: Durations.newsBadgeAnimation,
                               opacity: newVersion ? 1 : 0,
                               child: Padding(
-                                padding: EdgeInsetsDirectional.only(start: 2),
+                                padding: const EdgeInsetsDirectional.only(start: 2),
                                 child: DecoratedBox(
                                   decoration: BoxDecoration(
-                                    border: Border.all(color: Colors.white70),
+                                    border: const Border.fromBorderSide(BorderSide(color: Colors.white70)),
-                                    borderRadius: BorderRadius.circular(badgeSize),
+                                    borderRadius: BorderRadius.all(Radius.circular(badgeSize)),
                                   ),
                                   child: Icon(
                                     Icons.circle,
@@ -176,9 +176,9 @@ class _AppDrawerState extends State<AppDrawer> {
                     ),
                   ),
                   OutlinedButton.icon(
-                    key: Key('drawer-settings-button'),
+                    key: const Key('drawer-settings-button'),
                     onPressed: () => goTo(SettingsPage.routeName, (_) => SettingsPage()),
-                    icon: Icon(AIcons.settings),
+                    icon: const Icon(AIcons.settings),
                     label: Text(context.l10n.settingsPageTitle),
                   ),
                 ],
@@ -200,10 +200,10 @@ class _AppDrawerState extends State<AppDrawer> {
           }).toList()
             ..sort(source.compareAlbumsByName);
 
-          if (specialAlbums.isEmpty) return SizedBox.shrink();
+          if (specialAlbums.isEmpty) return const SizedBox.shrink();
           return Column(
             children: [
-              Divider(),
+              const Divider(),
               ...specialAlbums.map((album) => AlbumTile(album)),
             ],
           );
@@ -213,19 +213,19 @@ class _AppDrawerState extends State<AppDrawer> {
   // tiles
 
   Widget get allCollectionTile => CollectionNavTile(
-        leading: Icon(AIcons.allCollection),
+        leading: const Icon(AIcons.allCollection),
         title: context.l10n.drawerCollectionAll,
         filter: null,
       );
 
   Widget get videoTile => CollectionNavTile(
-        leading: Icon(AIcons.video),
+        leading: const Icon(AIcons.video),
         title: context.l10n.drawerCollectionVideos,
         filter: MimeFilter.video,
       );
 
   Widget get favouriteTile => CollectionNavTile(
-        leading: Icon(AIcons.favourite),
+        leading: const Icon(AIcons.favourite),
         title: context.l10n.drawerCollectionFavourites,
         filter: FavouriteFilter.instance,
       );

lib/widgets/drawer/collection_tile.dart

@@ -40,7 +40,7 @@ class CollectionNavTile extends StatelessWidget {
     Navigator.pushAndRemoveUntil(
       context,
       MaterialPageRoute(
-        settings: RouteSettings(name: CollectionPage.routeName),
+        settings: const RouteSettings(name: CollectionPage.routeName),
         builder: (context) => CollectionPage(CollectionLens(
           source: context.read<CollectionSource>(),
           filters: [filter],

lib/widgets/filter_grids/album_pick.dart

@@ -113,7 +113,7 @@ class AlbumPickAppBar extends StatelessWidget {
     }
 
     return SliverAppBar(
-      leading: BackButton(),
+      leading: const BackButton(),
       title: SourceStateAwareAppBarTitle(
         title: Text(title()),
         source: source,
@@ -123,7 +123,7 @@ class AlbumPickAppBar extends StatelessWidget {
       ),
       actions: [
         IconButton(
-          icon: Icon(AIcons.createAlbum),
+          icon: const Icon(AIcons.createAlbum),
           onPressed: () async {
             final newAlbum = await showDialog<String>(
               context: context,
@@ -173,7 +173,7 @@ class AlbumFilterBar extends StatelessWidget implements PreferredSizeWidget {
   });
 
   @override
-  Size get preferredSize => Size.fromHeight(preferredHeight);
+  Size get preferredSize => const Size.fromHeight(preferredHeight);
 
   @override
   Widget build(BuildContext context) {

lib/widgets/filter_grids/albums_page.dart

@@ -109,7 +109,7 @@ class AlbumListPage extends StatelessWidget {
       case AlbumChipGroupFactor.none:
         return {
           if (pinnedMapEntries.isNotEmpty || unpinnedMapEntries.isNotEmpty)
-            ChipSectionKey(): [
+            const ChipSectionKey(): [
               ...pinnedMapEntries,
               ...unpinnedMapEntries,
             ],

lib/widgets/filter_grids/common/chip_set_action_delegate.dart

@@ -53,7 +53,7 @@ abstract class ChipSetActionDelegate {
     Navigator.push(
       context,
       MaterialPageRoute(
-        settings: RouteSettings(name: StatsPage.routeName),
+        settings: const RouteSettings(name: StatsPage.routeName),
         builder: (context) => StatsPage(
           source: source,
         ),

lib/widgets/filter_grids/common/decorated_filter_chip.dart

@@ -73,7 +73,7 @@ class DecoratedFilterChip extends StatelessWidget {
               );
             }
           default:
-            return SizedBox();
+            return const SizedBox();
         }
       },
     );
@@ -143,7 +143,7 @@ class DecoratedFilterChip extends StatelessWidget {
             child: DecoratedIcon(
               AIcons.pin,
               color: FilterGridPage.detailColor,
-              shadows: [Constants.embossShadow],
+              shadows: Constants.embossShadows,
               size: iconSize,
             ),
           ),
@@ -154,7 +154,7 @@ class DecoratedFilterChip extends StatelessWidget {
             child: DecoratedIcon(
               AIcons.removableStorage,
               color: FilterGridPage.detailColor,
-              shadows: [Constants.embossShadow],
+              shadows: Constants.embossShadows,
               size: iconSize,
             ),
           ),

lib/widgets/filter_grids/common/filter_nav_page.dart

@@ -53,7 +53,7 @@ class FilterNavigationPage<T extends CollectionFilter> extends StatelessWidget {
   Widget build(BuildContext context) {
     final isMainMode = context.select<ValueNotifier<AppMode>, bool>((vn) => vn.value == AppMode.main);
     return FilterGridPage<T>(
-      key: Key('filter-grid-page'),
+      key: const Key('filter-grid-page'),
       appBar: SliverAppBar(
         title: InteractiveAppBarTitle(
           onTap: () => _goToSearch(context),
@@ -73,13 +73,13 @@ class FilterNavigationPage<T extends CollectionFilter> extends StatelessWidget {
       emptyBuilder: () => ValueListenableBuilder<SourceState>(
         valueListenable: source.stateNotifier,
         builder: (context, sourceState, child) {
-          return sourceState != SourceState.loading ? emptyBuilder() : SizedBox.shrink();
+          return sourceState != SourceState.loading ? emptyBuilder() : const SizedBox.shrink();
         },
       ),
       onTap: (filter) => Navigator.push(
         context,
         MaterialPageRoute(
-          settings: RouteSettings(name: CollectionPage.routeName),
+          settings: const RouteSettings(name: CollectionPage.routeName),
           builder: (context) => CollectionPage(CollectionLens(
             source: source,
             filters: [filter],
@@ -92,7 +92,7 @@ class FilterNavigationPage<T extends CollectionFilter> extends StatelessWidget {
 
   void _showMenu(BuildContext context, T filter, Offset? tapPosition) async {
     final overlay = Overlay.of(context)!.context.findRenderObject() as RenderBox;
-    final touchArea = Size(40, 40);
+    const touchArea = Size(40, 40);
     final selectedAction = await showMenu<ChipAction>(
       context: context,
       position: RelativeRect.fromRect((tapPosition ?? Offset.zero) & touchArea, Offset.zero & overlay.size),
@@ -113,11 +113,11 @@ class FilterNavigationPage<T extends CollectionFilter> extends StatelessWidget {
     return [
       CollectionSearchButton(source),
       PopupMenuButton<ChipSetAction>(
-        key: Key('appbar-menu-button'),
+        key: const Key('appbar-menu-button'),
         itemBuilder: (context) {
           return [
             PopupMenuItem(
-              key: Key('menu-sort'),
+              key: const Key('menu-sort'),
               value: ChipSetAction.sort,
               child: MenuRow(text: context.l10n.menuActionSort, icon: AIcons.sort),
             ),

lib/widgets/filter_grids/common/overlay.dart

@@ -34,10 +34,10 @@ class _ChipHighlightOverlayState extends State<ChipHighlightOverlay> {
     return Sweeper(
       builder: (context) => Container(
         decoration: BoxDecoration(
-          border: Border.all(
+          border: Border.fromBorderSide(BorderSide(
             color: Theme.of(context).accentColor,
             width: widget.extent * .1,
-          ),
+          )),
           borderRadius: widget.borderRadius,
         ),
       ),

lib/widgets/filter_grids/common/section_keys.dart

@@ -80,5 +80,5 @@ class StorageVolumeSectionKey extends ChipSectionKey {
   StorageVolumeSectionKey(BuildContext context, this.volume) : super(title: volume?.getDescription(context) ?? context.l10n.sectionUnknown);
 
   @override
-  Widget? get leading => (volume?.isRemovable ?? false) ? Icon(AIcons.removableStorage) : null;
+  Widget? get leading => (volume?.isRemovable ?? false) ? const Icon(AIcons.removableStorage) : null;
 }

lib/widgets/filter_grids/countries_page.dart

@@ -65,7 +65,7 @@ class CountryListPage extends StatelessWidget {
 
     return {
       if (pinnedMapEntries.isNotEmpty || unpinnedMapEntries.isNotEmpty)
-        ChipSectionKey(): [
+        const ChipSectionKey(): [
           ...pinnedMapEntries,
           ...unpinnedMapEntries,
         ],

lib/widgets/filter_grids/tags_page.dart

@@ -65,7 +65,7 @@ class TagListPage extends StatelessWidget {
 
     return {
       if (pinnedMapEntries.isNotEmpty || unpinnedMapEntries.isNotEmpty)
-        ChipSectionKey(): [
+        const ChipSectionKey(): [
           ...pinnedMapEntries,
           ...unpinnedMapEntries,
         ],

lib/widgets/home_page.dart

@@ -50,7 +50,7 @@ class _HomePageState extends State<HomePage> {
   }
 
   @override
-  Widget build(BuildContext context) => Scaffold();
+  Widget build(BuildContext context) => const Scaffold();
 
   Future<void> _setup() async {
     final permissions = await [
@@ -127,7 +127,7 @@ class _HomePageState extends State<HomePage> {
   Route _getRedirectRoute(AppMode appMode) {
     if (appMode == AppMode.view) {
       return DirectMaterialPageRoute(
-        settings: RouteSettings(name: EntryViewerPage.routeName),
+        settings: const RouteSettings(name: EntryViewerPage.routeName),
         builder: (_) => EntryViewerPage(
           initialEntry: _viewerEntry!,
         ),
@@ -146,7 +146,7 @@ class _HomePageState extends State<HomePage> {
     switch (routeName) {
       case AlbumListPage.routeName:
         return DirectMaterialPageRoute(
-          settings: RouteSettings(name: AlbumListPage.routeName),
+          settings: const RouteSettings(name: AlbumListPage.routeName),
           builder: (_) => AlbumListPage(),
         );
       case SearchPage.routeName:
@@ -156,7 +156,7 @@ class _HomePageState extends State<HomePage> {
       case CollectionPage.routeName:
       default:
         return DirectMaterialPageRoute(
-          settings: RouteSettings(name: CollectionPage.routeName),
+          settings: const RouteSettings(name: CollectionPage.routeName),
           builder: (_) => CollectionPage(
             CollectionLens(
               source: source,

lib/widgets/search/expandable_filter_row.dart

@@ -25,7 +25,7 @@ class ExpandableFilterRow extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    if (filters.isEmpty) return SizedBox.shrink();
+    if (filters.isEmpty) return const SizedBox.shrink();
 
     final hasTitle = title != null && title!.isNotEmpty;
 
@@ -34,7 +34,7 @@ class ExpandableFilterRow extends StatelessWidget {
     Widget? titleRow;
     if (hasTitle) {
       titleRow = Padding(
-        padding: EdgeInsets.all(16),
+        padding: const EdgeInsets.all(16),
         child: Row(
           children: [
             Text(
@@ -55,7 +55,7 @@ class ExpandableFilterRow extends StatelessWidget {
     final filterList = filters.toList();
     final wrap = Container(
       key: ValueKey('wrap$title'),
-      padding: EdgeInsets.symmetric(horizontal: horizontalPadding),
+      padding: const EdgeInsets.symmetric(horizontal: horizontalPadding),
       // specify transparent as a workaround to prevent
       // chip border clipping when the floating app bar is fading
       color: Colors.transparent,
@@ -73,12 +73,12 @@ class ExpandableFilterRow extends StatelessWidget {
       height: AvesFilterChip.minChipHeight,
       child: ListView.separated(
         scrollDirection: Axis.horizontal,
-        physics: BouncingScrollPhysics(),
+        physics: const BouncingScrollPhysics(),
-        padding: EdgeInsets.symmetric(horizontal: horizontalPadding),
+        padding: const EdgeInsets.symmetric(horizontal: horizontalPadding),
         itemBuilder: (context, index) {
-          return index < filterList.length ? _buildFilterChip(filterList[index]) : SizedBox();
+          return index < filterList.length ? _buildFilterChip(filterList[index]) : const SizedBox();
         },
-        separatorBuilder: (context, index) => SizedBox(width: 8),
+        separatorBuilder: (context, index) => const SizedBox(width: 8),
         itemCount: filterList.length,
       ),
     );

lib/widgets/search/search_button.dart

@@ -13,8 +13,8 @@ class CollectionSearchButton extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return IconButton(
-      key: Key('search-button'),
+      key: const Key('search-button'),
-      icon: Icon(AIcons.search),
+      icon: const Icon(AIcons.search),
       onPressed: () => _goToSearch(context),
       tooltip: MaterialLocalizations.of(context).searchFieldLabel,
     );

lib/widgets/search/search_delegate.dart

@@ -53,7 +53,7 @@ class CollectionSearchDelegate {
             onPressed: () => _goBack(context),
             tooltip: MaterialLocalizations.of(context).backButtonTooltip,
           )
-        : CloseButton(
+        : const CloseButton(
             onPressed: SystemNavigator.pop,
           );
   }
@@ -62,7 +62,7 @@ class CollectionSearchDelegate {
     return [
       if (query.isNotEmpty)
         IconButton(
-          icon: Icon(AIcons.clear),
+          icon: const Icon(AIcons.clear),
           onPressed: () {
             query = '';
             showSuggestions(context);
@@ -93,7 +93,7 @@ class CollectionSearchDelegate {
                   final history = settings.searchHistory.where(notHidden).toList();
 
                   return ListView(
-                    padding: EdgeInsets.only(top: 8),
+                    padding: const EdgeInsets.only(top: 8),
                     children: [
                       _buildFilterRow(
                         context: context,
@@ -195,7 +195,7 @@ class CollectionSearchDelegate {
       // and possibly trigger a rebuild here
       _select(context, _buildQueryFilter(true));
     });
-    return SizedBox.shrink();
+    return const SizedBox.shrink();
   }
 
   QueryFilter? _buildQueryFilter(bool colorful) {
@@ -242,7 +242,7 @@ class CollectionSearchDelegate {
     Navigator.pushAndRemoveUntil(
       context,
       MaterialPageRoute(
-        settings: RouteSettings(name: CollectionPage.routeName),
+        settings: const RouteSettings(name: CollectionPage.routeName),
         builder: (context) => CollectionPage(CollectionLens(
           source: source,
           filters: [filter],
@@ -302,7 +302,7 @@ enum SearchBody { suggestions, results }
 class SearchPageRoute<T> extends PageRoute<T> {
   SearchPageRoute({
     required this.delegate,
-  }) : super(settings: RouteSettings(name: SearchPage.routeName)) {
+  }) : super(settings: const RouteSettings(name: SearchPage.routeName)) {
     assert(
       delegate.route == null,
       'The ${delegate.runtimeType} instance is currently used by another active '

lib/widgets/search/search_page.dart

@@ -93,13 +93,13 @@ class _SearchPageState extends State<SearchPage> {
     switch (widget.delegate.currentBody) {
       case SearchBody.suggestions:
         body = KeyedSubtree(
-          key: ValueKey<SearchBody>(SearchBody.suggestions),
+          key: const ValueKey<SearchBody>(SearchBody.suggestions),
           child: widget.delegate.buildSuggestions(context),
         );
         break;
       case SearchBody.results:
         body = KeyedSubtree(
-          key: ValueKey<SearchBody>(SearchBody.results),
+          key: const ValueKey<SearchBody>(SearchBody.results),
           child: widget.delegate.buildResults(context),
         );
         break;

lib/widgets/settings/access_grants.dart

@@ -13,7 +13,7 @@ class StorageAccessTile extends StatelessWidget {
         Navigator.push(
           context,
           MaterialPageRoute(
-            settings: RouteSettings(name: StorageAccessPage.routeName),
+            settings: const RouteSettings(name: StorageAccessPage.routeName),
             builder: (context) => StorageAccessPage(),
           ),
         );
@@ -52,16 +52,16 @@ class _StorageAccessPageState extends State<StorageAccessPage> {
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
             Padding(
-              padding: EdgeInsets.symmetric(vertical: 8, horizontal: 16),
+              padding: const EdgeInsets.symmetric(vertical: 8, horizontal: 16),
               child: Row(
                 children: [
-                  Icon(AIcons.info),
+                  const Icon(AIcons.info),
-                  SizedBox(width: 16),
+                  const SizedBox(width: 16),
                   Expanded(child: Text(context.l10n.settingsStorageAccessBanner)),
                 ],
               ),
             ),
-            Divider(),
+            const Divider(),
             Expanded(
               child: FutureBuilder<List<String>>(
                 future: _pathLoader,
@@ -70,7 +70,7 @@ class _StorageAccessPageState extends State<StorageAccessPage> {
                     return Text(snapshot.error.toString());
                   }
                   if (snapshot.connectionState != ConnectionState.done && _lastPaths == null) {
-                    return SizedBox.shrink();
+                    return const SizedBox.shrink();
                   }
                   _lastPaths = snapshot.data!..sort();
                   if (_lastPaths!.isEmpty) {
@@ -85,7 +85,7 @@ class _StorageAccessPageState extends State<StorageAccessPage> {
                               title: Text(path),
                               dense: true,
                               trailing: IconButton(
-                                icon: Icon(AIcons.clear),
+                                icon: const Icon(AIcons.clear),
                                 onPressed: () async {
                                   await storageService.revokeDirectoryAccess(path);
                                   _load();

lib/widgets/settings/entry_background.dart

@@ -45,7 +45,7 @@ class _EntryBackgroundSelectorState extends State<EntryBackgroundSelector> {
       Widget? child;
       switch (selected) {
         case EntryBackground.transparent:
-          child = Icon(
+          child = const Icon(
             Icons.clear,
             size: 20,
             color: Colors.white30,

lib/widgets/settings/hidden_filters.dart

@@ -16,7 +16,7 @@ class HiddenFilterTile extends StatelessWidget {
         Navigator.push(
           context,
           MaterialPageRoute(
-            settings: RouteSettings(name: HiddenFilterPage.routeName),
+            settings: const RouteSettings(name: HiddenFilterPage.routeName),
             builder: (context) => HiddenFilterPage(),
           ),
         );
@@ -39,19 +39,19 @@ class HiddenFilterPage extends StatelessWidget {
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
             Padding(
-              padding: EdgeInsets.symmetric(vertical: 8, horizontal: 16),
+              padding: const EdgeInsets.symmetric(vertical: 8, horizontal: 16),
               child: Row(
                 children: [
-                  Icon(AIcons.info),
+                  const Icon(AIcons.info),
-                  SizedBox(width: 16),
+                  const SizedBox(width: 16),
                   Expanded(child: Text(context.l10n.settingsHiddenFiltersBanner)),
                 ],
               ),
             ),
-            Divider(),
+            const Divider(),
             Expanded(
               child: Padding(
-                padding: EdgeInsets.all(8),
+                padding: const EdgeInsets.all(8),
                 child: Consumer<Settings>(
                   builder: (context, settings, child) {
                     final hiddenFilters = settings.hiddenFilters;

lib/widgets/settings/quick_actions/available_actions.dart

@@ -53,7 +53,7 @@ class AvailableActionPanel extends StatelessWidget {
         return AnimatedBuilder(
           animation: Listenable.merge([quickActionsChangeNotifier, draggedAvailableAction]),
           builder: (context, child) => Padding(
-            padding: EdgeInsets.all(8),
+            padding: const EdgeInsets.all(8),
             child: Wrap(
               alignment: WrapAlignment.spaceEvenly,
               spacing: 8,

lib/widgets/settings/quick_actions/common.dart

@@ -18,16 +18,16 @@ class ActionPanel extends StatelessWidget {
     return AnimatedContainer(
       foregroundDecoration: BoxDecoration(
         color: color.withOpacity(.2),
-        border: Border.all(
+        border: Border.fromBorderSide(BorderSide(
           color: color,
           width: highlight ? 2 : 1,
+        )),
+        borderRadius: const BorderRadius.all(Radius.circular(8)),
       ),
-        borderRadius: BorderRadius.circular(8),
+      margin: const EdgeInsets.all(16),
-      ),
-      margin: EdgeInsets.all(16),
       duration: Durations.quickActionHighlightAnimation,
       child: ClipRRect(
-        borderRadius: BorderRadius.circular(8),
+        borderRadius: const BorderRadius.all(Radius.circular(8)),
         child: child,
       ),
     );
@@ -54,7 +54,7 @@ class ActionButton extends StatelessWidget {
       child: Column(
         mainAxisSize: MainAxisSize.min,
         children: [
-          SizedBox(height: padding),
+          const SizedBox(height: padding),
           OverlayButton(
             child: IconButton(
               icon: Icon(action.getIcon()),
@@ -62,7 +62,7 @@ class ActionButton extends StatelessWidget {
             ),
           ),
           if (showCaption) ...[
-            SizedBox(height: padding),
+            const SizedBox(height: padding),
             Text(
               action.getText(context),
               style: enabled ? textStyle : textStyle!.copyWith(color: textStyle.color!.withOpacity(.2)),
@@ -71,7 +71,7 @@ class ActionButton extends StatelessWidget {
               maxLines: 2,
             ),
           ],
-          SizedBox(height: padding),
+          const SizedBox(height: padding),
         ],
       ),
     );

lib/widgets/settings/quick_actions/editor.dart

@@ -24,7 +24,7 @@ class QuickActionsTile extends StatelessWidget {
         Navigator.push(
           context,
           MaterialPageRoute(
-            settings: RouteSettings(name: QuickActionEditorPage.routeName),
+            settings: const RouteSettings(name: QuickActionEditorPage.routeName),
             builder: (context) => QuickActionEditorPage(),
           ),
         );
@@ -71,7 +71,7 @@ class _QuickActionEditorPageState extends State<QuickActionEditorPage> {
   void _onQuickActionTargetLeave() {
     _stopLeavingTimer();
     final action = _draggedAvailableAction.value;
-    _targetLeavingTimer = Timer(Durations.quickActionListAnimation + Duration(milliseconds: 50), () {
+    _targetLeavingTimer = Timer(Durations.quickActionListAnimation + const Duration(milliseconds: 50), () {
       _removeQuickAction(action);
       _quickActionHighlight.value = false;
     });
@@ -111,18 +111,18 @@ class _QuickActionEditorPageState extends State<QuickActionEditorPage> {
             child: ListView(
               children: [
                 Padding(
-                  padding: EdgeInsets.symmetric(vertical: 8, horizontal: 16),
+                  padding: const EdgeInsets.symmetric(vertical: 8, horizontal: 16),
                   child: Row(
                     children: [
-                      Icon(AIcons.info),
+                      const Icon(AIcons.info),
-                      SizedBox(width: 16),
+                      const SizedBox(width: 16),
                       Expanded(child: Text(context.l10n.settingsViewerQuickActionEditorBanner)),
                     ],
                   ),
                 ),
-                Divider(),
+                const Divider(),
                 Padding(
-                  padding: EdgeInsets.symmetric(horizontal: 16),
+                  padding: const EdgeInsets.symmetric(horizontal: 16),
                   child: Text(
                     context.l10n.settingsViewerQuickActionEditorDisplayedButtons,
                     style: Constants.titleTextStyle,
@@ -161,7 +161,7 @@ class _QuickActionEditorPageState extends State<QuickActionEditorPage> {
                             shrinkWrap: true,
                             padding: EdgeInsets.zero,
                             itemBuilder: (context, index, animation) {
-                              if (index >= _quickActions.length) return SizedBox();
+                              if (index >= _quickActions.length) return const SizedBox();
                               final action = _quickActions[index];
                               return QuickActionButton(
                                 placement: QuickActionPlacement.action,
@@ -186,14 +186,14 @@ class _QuickActionEditorPageState extends State<QuickActionEditorPage> {
                                     style: Theme.of(context).textTheme.caption,
                                   ),
                                 )
-                              : SizedBox(),
+                              : const SizedBox(),
                         ),
                       ],
                     ),
                   ),
                 ),
                 Padding(
-                  padding: EdgeInsets.symmetric(horizontal: 16),
+                  padding: const EdgeInsets.symmetric(horizontal: 16),
                   child: Text(
                     context.l10n.settingsViewerQuickActionEditorAvailableButtons,
                     style: Constants.titleTextStyle,
@@ -278,7 +278,7 @@ class _QuickActionEditorPageState extends State<QuickActionEditorPage> {
         axis: Axis.horizontal,
         sizeFactor: animation,
         child: Padding(
-          padding: EdgeInsets.symmetric(vertical: _QuickActionEditorPageState.quickActionVerticalPadding, horizontal: 4),
+          padding: const EdgeInsets.symmetric(vertical: _QuickActionEditorPageState.quickActionVerticalPadding, horizontal: 4),
           child: OverlayButton(
             child: IconButton(
               icon: Icon(action.getIcon()),

lib/widgets/settings/quick_actions/quick_actions.dart

@@ -52,7 +52,7 @@ class QuickActionButton extends StatelessWidget {
       },
       onAcceptWithDetails: (details) => _setPanelHighlight(false),
       onLeave: (data) => onTargetLeave(),
-      builder: (context, accepted, rejected) => child ?? SizedBox(),
+      builder: (context, accepted, rejected) => child ?? const SizedBox(),
     );
   }
 

lib/widgets/settings/settings_page.dart

@@ -47,14 +47,14 @@ class _SettingsPageState extends State<SettingsPage> {
           data: theme.copyWith(
             textTheme: theme.textTheme.copyWith(
               // dense style font for tile subtitles, without modifying title font
-              bodyText2: TextStyle(fontSize: 12),
+              bodyText2: const TextStyle(fontSize: 12),
             ),
           ),
           child: SafeArea(
             child: Consumer<Settings>(
               builder: (context, settings, child) => AnimationLimiter(
                 child: ListView(
-                  padding: EdgeInsets.all(8),
+                  padding: const EdgeInsets.all(8),
                   children: AnimationConfiguration.toStaggeredList(
                     duration: Durations.staggeredAnimation,
                     delay: Durations.staggeredAnimationDelay,
@@ -333,17 +333,17 @@ class _SettingsPageState extends State<SettingsPage> {
   }
 
   Widget _buildLeading(IconData icon, Color color) => Container(
-        padding: EdgeInsets.all(6),
+        padding: const EdgeInsets.all(6),
         decoration: BoxDecoration(
-          border: Border.all(
+          border: Border.fromBorderSide(BorderSide(
             color: color,
             width: AvesFilterChip.outlineWidth,
-          ),
+          )),
           shape: BoxShape.circle,
         ),
         child: DecoratedIcon(
           icon,
-          shadows: [Constants.embossShadow],
+          shadows: Constants.embossShadows,
           size: 18,
         ),
       );

lib/widgets/stats/filter_table.dart

@@ -36,7 +36,7 @@ class FilterTable extends StatelessWidget {
     final lineHeight = 16 * textScaleFactor;
 
     return Padding(
-      padding: EdgeInsetsDirectional.only(start: AvesFilterChip.outlineWidth / 2 + 6, end: 8),
+      padding: const EdgeInsetsDirectional.only(start: AvesFilterChip.outlineWidth / 2 + 6, end: 8),
       child: LayoutBuilder(
         builder: (context, constraints) {
           final showPercentIndicator = constraints.maxWidth - (chipWidth + countWidth) > percentIndicatorMinWidth;
@@ -52,7 +52,7 @@ class FilterTable extends StatelessWidget {
                     // the `Table` `border` property paints on the cells and does not add margins,
                     // so we define margins here instead, but they should be symmetric
                     // to keep all cells vertically aligned on the center/middle
-                    margin: EdgeInsets.symmetric(vertical: 4),
+                    margin: const EdgeInsets.symmetric(vertical: 4),
                     alignment: AlignmentDirectional.centerStart,
                     child: AvesFilterChip(
                       filter: filter,
@@ -69,20 +69,20 @@ class FilterTable extends StatelessWidget {
                       padding: EdgeInsets.symmetric(horizontal: lineHeight),
                       center: Text(
                         NumberFormat.percentPattern().format(percent),
-                        style: TextStyle(shadows: [Constants.embossShadow]),
+                        style: const TextStyle(shadows: Constants.embossShadows),
                       ),
                     ),
                   Text(
                     '$count',
-                    style: TextStyle(color: Colors.white70),
+                    style: const TextStyle(color: Colors.white70),
                     textAlign: TextAlign.end,
                   ),
                 ],
               );
             }).toList(),
             columnWidths: {
-              0: MaxColumnWidth(IntrinsicColumnWidth(), FixedColumnWidth(chipWidth)),
+              0: const MaxColumnWidth(IntrinsicColumnWidth(), FixedColumnWidth(chipWidth)),
-              2: MaxColumnWidth(IntrinsicColumnWidth(), FixedColumnWidth(countWidth)),
+              2: const MaxColumnWidth(IntrinsicColumnWidth(), FixedColumnWidth(countWidth)),
             },
             defaultVerticalAlignment: TableCellVerticalAlignment.middle,
           );

lib/widgets/stats/stats.dart

@@ -16,7 +16,6 @@ import 'package:aves/widgets/common/extensions/build_context.dart';
 import 'package:aves/widgets/common/identity/empty.dart';
 import 'package:aves/widgets/common/providers/media_query_data_provider.dart';
 import 'package:aves/widgets/stats/filter_table.dart';
-
 // ignore: import_of_legacy_library_into_null_safe
 import 'package:charts_flutter/flutter.dart' as charts;
 import 'package:collection/collection.dart';
@@ -87,7 +86,7 @@ class StatsPage extends StatelessWidget {
       final textScaleFactor = MediaQuery.textScaleFactorOf(context);
       final lineHeight = 16 * textScaleFactor;
       final locationIndicator = Padding(
-        padding: EdgeInsets.all(16),
+        padding: const EdgeInsets.all(16),
         child: Column(
           children: [
             LinearPercentIndicator(
@@ -96,15 +95,15 @@ class StatsPage extends StatelessWidget {
               backgroundColor: Colors.white24,
               progressColor: Theme.of(context).accentColor,
               animation: true,
-              leading: Icon(AIcons.location),
+              leading: const Icon(AIcons.location),
               // right padding to match leading, so that inside label is aligned with outside label below
-              padding: EdgeInsets.symmetric(horizontal: lineHeight) + EdgeInsets.only(right: 24),
+              padding: EdgeInsets.symmetric(horizontal: lineHeight) + const EdgeInsets.only(right: 24),
               center: Text(
                 NumberFormat.percentPattern().format(withGpsPercent),
-                style: TextStyle(shadows: [Constants.embossShadow]),
+                style: const TextStyle(shadows: Constants.embossShadows),
               ),
             ),
-            SizedBox(height: 8),
+            const SizedBox(height: 8),
             Text(context.l10n.statsWithGps(withGpsCount)),
           ],
         ),
@@ -132,7 +131,7 @@ class StatsPage extends StatelessWidget {
   }
 
   Widget _buildMimeDonut(BuildContext context, String Function(int) label, Map<String, int> byMimeTypes) {
-    if (byMimeTypes.isEmpty) return SizedBox.shrink();
+    if (byMimeTypes.isEmpty) return const SizedBox.shrink();
 
     final sum = byMimeTypes.values.fold<int>(0, (prev, v) => prev + v);
 
@@ -193,12 +192,12 @@ class StatsPage extends StatelessWidget {
                           WidgetSpan(
                             alignment: PlaceholderAlignment.middle,
                             child: Padding(
-                              padding: EdgeInsetsDirectional.only(end: 8),
+                              padding: const EdgeInsetsDirectional.only(end: 8),
                               child: Icon(AIcons.disc, color: d.color),
                             ),
                           ),
                           TextSpan(text: '${d.displayText}   '),
-                          TextSpan(text: '${d.entryCount}', style: TextStyle(color: Colors.white70)),
+                          TextSpan(text: '${d.entryCount}', style: const TextStyle(color: Colors.white70)),
                         ],
                       ),
                       overflow: TextOverflow.fade,
@@ -235,7 +234,7 @@ class StatsPage extends StatelessWidget {
 
     return [
       Padding(
-        padding: EdgeInsets.all(16),
+        padding: const EdgeInsets.all(16),
         child: Text(
           title,
           style: Constants.titleTextStyle,
@@ -272,7 +271,7 @@ class StatsPage extends StatelessWidget {
     Navigator.pushAndRemoveUntil(
       context,
       MaterialPageRoute(
-        settings: RouteSettings(name: CollectionPage.routeName),
+        settings: const RouteSettings(name: CollectionPage.routeName),
         builder: (context) => CollectionPage(CollectionLens(
           source: source,
           filters: [filter],

lib/widgets/viewer/debug/db.dart

@@ -40,13 +40,13 @@ class _DbTabState extends State<DbTab> {
   @override
   Widget build(BuildContext context) {
     return ListView(
-      padding: EdgeInsets.all(16),
+      padding: const EdgeInsets.all(16),
       children: [
         FutureBuilder<DateMetadata?>(
           future: _dbDateLoader,
           builder: (context, snapshot) {
             if (snapshot.hasError) return Text(snapshot.error.toString());
-            if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+            if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
             final data = snapshot.data;
             return Column(
               crossAxisAlignment: CrossAxisAlignment.start,
@@ -60,12 +60,12 @@ class _DbTabState extends State<DbTab> {
             );
           },
         ),
-        SizedBox(height: 16),
+        const SizedBox(height: 16),
         FutureBuilder<AvesEntry?>(
           future: _dbEntryLoader,
           builder: (context, snapshot) {
             if (snapshot.hasError) return Text(snapshot.error.toString());
-            if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+            if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
             final data = snapshot.data;
             return Column(
               crossAxisAlignment: CrossAxisAlignment.start,
@@ -89,12 +89,12 @@ class _DbTabState extends State<DbTab> {
             );
           },
         ),
-        SizedBox(height: 16),
+        const SizedBox(height: 16),
         FutureBuilder<CatalogMetadata?>(
           future: _dbMetadataLoader,
           builder: (context, snapshot) {
             if (snapshot.hasError) return Text(snapshot.error.toString());
-            if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+            if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
             final data = snapshot.data;
             return Column(
               crossAxisAlignment: CrossAxisAlignment.start,
@@ -116,12 +116,12 @@ class _DbTabState extends State<DbTab> {
             );
           },
         ),
-        SizedBox(height: 16),
+        const SizedBox(height: 16),
         FutureBuilder<AddressDetails?>(
           future: _dbAddressLoader,
           builder: (context, snapshot) {
             if (snapshot.hasError) return Text(snapshot.error.toString());
-            if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+            if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
             final data = snapshot.data;
             return Column(
               crossAxisAlignment: CrossAxisAlignment.start,

lib/widgets/viewer/debug/debug_page.dart

@@ -21,16 +21,16 @@ class ViewerDebugPage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final tabs = <Tuple2<Tab, Widget>>[
-      Tuple2(Tab(text: 'Entry'), _buildEntryTabView()),
+      Tuple2(const Tab(text: 'Entry'), _buildEntryTabView()),
-      if (context.select<ValueNotifier<AppMode>, bool>((vn) => vn.value != AppMode.view)) Tuple2(Tab(text: 'DB'), DbTab(entry: entry)),
+      if (context.select<ValueNotifier<AppMode>, bool>((vn) => vn.value != AppMode.view)) Tuple2(const Tab(text: 'DB'), DbTab(entry: entry)),
-      Tuple2(Tab(icon: Icon(AIcons.android)), MetadataTab(entry: entry)),
+      Tuple2(const Tab(icon: Icon(AIcons.android)), MetadataTab(entry: entry)),
-      Tuple2(Tab(icon: Icon(AIcons.image)), _buildThumbnailsTabView()),
+      Tuple2(const Tab(icon: Icon(AIcons.image)), _buildThumbnailsTabView()),
     ];
     return DefaultTabController(
       length: tabs.length,
       child: Scaffold(
         appBar: AppBar(
-          title: Text('Debug'),
+          title: const Text('Debug'),
           bottom: TabBar(
             tabs: tabs.map((t) => t.item1).toList(),
           ),
@@ -54,7 +54,7 @@ class ViewerDebugPage extends StatelessWidget {
     }
 
     return ListView(
-      padding: EdgeInsets.all(16),
+      padding: const EdgeInsets.all(16),
       children: [
         InfoRowGroup({
           'uri': '${entry.uri}',
@@ -66,13 +66,13 @@ class ViewerDebugPage extends StatelessWidget {
           'sourceMimeType': '${entry.sourceMimeType}',
           'mimeType': '${entry.mimeType}',
         }),
-        Divider(),
+        const Divider(),
         InfoRowGroup({
           'dateModifiedSecs': toDateValue(entry.dateModifiedSecs, factor: 1000),
           'sourceDateTakenMillis': toDateValue(entry.sourceDateTakenMillis),
           'bestDate': '${entry.bestDate}',
         }),
-        Divider(),
+        const Divider(),
         InfoRowGroup({
           'width': '${entry.width}',
           'height': '${entry.height}',
@@ -83,12 +83,12 @@ class ViewerDebugPage extends StatelessWidget {
           'displayAspectRatio': '${entry.displayAspectRatio}',
           'displaySize': '${entry.displaySize}',
         }),
-        Divider(),
+        const Divider(),
         InfoRowGroup({
           'durationMillis': '${entry.durationMillis}',
           'durationText': '${entry.durationText}',
         }),
-        Divider(),
+        const Divider(),
         InfoRowGroup({
           'sizeBytes': '${entry.sizeBytes}',
           'isFavourite': '${entry.isFavourite}',
@@ -104,7 +104,7 @@ class ViewerDebugPage extends StatelessWidget {
           'canRotateAndFlip': '${entry.canRotateAndFlip}',
           'xmpSubjects': '${entry.xmpSubjects}',
         }),
-        Divider(),
+        const Divider(),
         InfoRowGroup({
           'hasGps': '${entry.hasGps}',
           'hasAddress': '${entry.hasAddress}',
@@ -121,7 +121,7 @@ class ViewerDebugPage extends StatelessWidget {
     if (entry.isSvg) {
       const extent = 128.0;
       children.addAll([
-        Text('SVG ($extent)'),
+        const Text('SVG ($extent)'),
         SvgPicture(
           UriPicture(
             uri: entry.uri,
@@ -140,12 +140,12 @@ class ViewerDebugPage extends StatelessWidget {
                   image: provider,
                 ),
               ),
-              SizedBox(height: 16),
+              const SizedBox(height: 16),
             ]),
       );
     }
     return ListView(
-      padding: EdgeInsets.all(16),
+      padding: const EdgeInsets.all(16),
       children: children,
     );
   }

lib/widgets/viewer/debug/metadata.dart

@@ -65,7 +65,7 @@ class _MetadataTabState extends State<MetadataTab> {
         children: [
           if (data.isNotEmpty)
             Padding(
-              padding: EdgeInsets.only(left: 8, right: 8, bottom: 8),
+              padding: const EdgeInsets.only(left: 8, right: 8, bottom: 8),
               child: InfoRowGroup(
                 data,
                 maxValueLength: Constants.infoGroupMaxValueLength,
@@ -77,12 +77,12 @@ class _MetadataTabState extends State<MetadataTab> {
 
     Widget builderFromSnapshot(BuildContext context, AsyncSnapshot<Map> snapshot, String title) {
       if (snapshot.hasError) return Text(snapshot.error.toString());
-      if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+      if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
       return builderFromSnapshotData(context, snapshot.data!, title);
     }
 
     return ListView(
-      padding: EdgeInsets.all(8),
+      padding: const EdgeInsets.all(8),
       children: [
         FutureBuilder<Map>(
           future: _bitmapFactoryLoader,
@@ -109,7 +109,7 @@ class _MetadataTabState extends State<MetadataTab> {
             future: _tiffStructureLoader,
             builder: (context, snapshot) {
               if (snapshot.hasError) return Text(snapshot.error.toString());
-              if (snapshot.connectionState != ConnectionState.done) return SizedBox.shrink();
+              if (snapshot.connectionState != ConnectionState.done) return const SizedBox.shrink();
               return Column(
                 crossAxisAlignment: CrossAxisAlignment.start,
                 children: snapshot.data!.entries.map((kv) => builderFromSnapshotData(context, kv.value as Map, 'TIFF ${kv.key}')).toList(),

lib/widgets/viewer/entry_action_delegate.dart

@@ -156,7 +156,7 @@ class EntryActionDelegate with FeedbackMixin, PermissionAwareMixin, SizeAwareMix
     final destinationAlbum = await Navigator.push(
       context,
       MaterialPageRoute<String>(
-        settings: RouteSettings(name: AlbumPickPage.routeName),
+        settings: const RouteSettings(name: AlbumPickPage.routeName),
         builder: (context) => AlbumPickPage(source: source, moveType: MoveType.export),
       ),
     );
@@ -227,7 +227,7 @@ class EntryActionDelegate with FeedbackMixin, PermissionAwareMixin, SizeAwareMix
     Navigator.push(
       context,
       MaterialPageRoute(
-        settings: RouteSettings(name: SourceViewerPage.routeName),
+        settings: const RouteSettings(name: SourceViewerPage.routeName),
         builder: (context) => SourceViewerPage(
           loader: () => imageFileService.getSvg(entry.uri, entry.mimeType).then(utf8.decode),
         ),
@@ -239,7 +239,7 @@ class EntryActionDelegate with FeedbackMixin, PermissionAwareMixin, SizeAwareMix
     Navigator.push(
       context,
       MaterialPageRoute(
-        settings: RouteSettings(name: ViewerDebugPage.routeName),
+        settings: const RouteSettings(name: ViewerDebugPage.routeName),
         builder: (context) => ViewerDebugPage(entry: entry),
       ),
     );

lib/widgets/viewer/entry_horizontal_pager.dart

@@ -35,10 +35,10 @@ class _MultiEntryScrollerState extends State<MultiEntryScroller> with AutomaticK
     return MagnifierGestureDetectorScope(
       axis: [Axis.horizontal, Axis.vertical],
       child: PageView.builder(
-        key: Key('horizontal-pageview'),
+        key: const Key('horizontal-pageview'),
         scrollDirection: Axis.horizontal,
         controller: widget.pageController,
-        physics: MagnifierScrollerPhysics(parent: BouncingScrollPhysics()),
+        physics: const MagnifierScrollerPhysics(parent: BouncingScrollPhysics()),
         onPageChanged: widget.onPageChanged,
         itemBuilder: (context, index) {
           final entry = entries[index];
@@ -77,7 +77,7 @@ class _MultiEntryScrollerState extends State<MultiEntryScroller> with AutomaticK
       selector: (c, mq) => mq.size,
       builder: (c, mqSize, child) {
         return EntryPageView(
-          key: Key('imageview'),
+          key: const Key('imageview'),
           mainEntry: mainEntry,
           pageEntry: pageEntry ?? mainEntry,
           viewportSize: mqSize,

lib/widgets/viewer/entry_vertical_pager.dart

@@ -82,7 +82,7 @@ class _ViewerVerticalPageViewState extends State<ViewerVerticalPageView> {
   @override
   Widget build(BuildContext context) {
     // fake page for opacity transition between collection and viewer
-    final transitionPage = SizedBox();
+    const transitionPage = SizedBox();
 
     final imagePage = hasCollection
         ? MultiEntryScroller(
@@ -95,7 +95,7 @@ class _ViewerVerticalPageViewState extends State<ViewerVerticalPageView> {
             ? SingleEntryScroller(
                 entry: entry!,
               )
-            : SizedBox();
+            : const SizedBox();
 
     final infoPage = NotificationListener<BackUpNotification>(
       onNotification: (notification) {
@@ -130,10 +130,10 @@ class _ViewerVerticalPageViewState extends State<ViewerVerticalPageView> {
         child: child,
       ),
       child: PageView(
-        key: Key('vertical-pageview'),
+        key: const Key('vertical-pageview'),
         scrollDirection: Axis.vertical,
         controller: widget.verticalPager,
-        physics: MagnifierScrollerPhysics(parent: PageScrollPhysics()),
+        physics: const MagnifierScrollerPhysics(parent: PageScrollPhysics()),
         onPageChanged: widget.onVerticalPageChanged,
         children: pages,
       ),

lib/widgets/viewer/entry_viewer_stack.dart

@@ -101,7 +101,7 @@ class _EntryViewerStackState extends State<EntryViewerStack> with SingleTickerPr
       // no bounce at the bottom, to avoid video controller displacement
       curve: Curves.easeOutQuad,
     );
-    _bottomOverlayOffset = Tween(begin: Offset(0, 1), end: Offset(0, 0)).animate(CurvedAnimation(
+    _bottomOverlayOffset = Tween(begin: const Offset(0, 1), end: const Offset(0, 0)).animate(CurvedAnimation(
       parent: _overlayAnimationController,
       curve: Curves.easeOutQuad,
     ));
@@ -220,7 +220,7 @@ class _EntryViewerStackState extends State<EntryViewerStack> with SingleTickerPr
     Widget child = ValueListenableBuilder<AvesEntry?>(
       valueListenable: _entryNotifier,
       builder: (context, mainEntry, child) {
-        if (mainEntry == null) return SizedBox.shrink();
+        if (mainEntry == null) return const SizedBox.shrink();
 
         return ViewerTopOverlay(
           mainEntry: mainEntry,
@@ -276,7 +276,7 @@ class _EntryViewerStackState extends State<EntryViewerStack> with SingleTickerPr
     Widget child = ValueListenableBuilder<AvesEntry?>(
       valueListenable: _entryNotifier,
       builder: (context, mainEntry, child) {
-        if (mainEntry == null) return SizedBox.shrink();
+        if (mainEntry == null) return const SizedBox.shrink();
 
         Widget? _buildExtraBottomOverlay(AvesEntry pageEntry) {
           // a 360 video is both a video and a panorama but only the video controls are displayed
@@ -304,12 +304,12 @@ class _EntryViewerStackState extends State<EntryViewerStack> with SingleTickerPr
                 stream: multiPageController.infoStream,
                 builder: (context, snapshot) {
                   final multiPageInfo = multiPageController.info;
-                  if (multiPageInfo == null) return SizedBox.shrink();
+                  if (multiPageInfo == null) return const SizedBox.shrink();
                   return ValueListenableBuilder<int?>(
                     valueListenable: multiPageController.pageNotifier,
                     builder: (context, page, child) {
                       final pageEntry = multiPageInfo.getPageEntryByIndex(page);
-                      return _buildExtraBottomOverlay(pageEntry) ?? SizedBox();
+                      return _buildExtraBottomOverlay(pageEntry) ?? const SizedBox();
                     },
                   );
                 })
@@ -380,7 +380,7 @@ class _EntryViewerStackState extends State<EntryViewerStack> with SingleTickerPr
     Navigator.pushAndRemoveUntil(
       context,
       MaterialPageRoute(
-        settings: RouteSettings(name: CollectionPage.routeName),
+        settings: const RouteSettings(name: CollectionPage.routeName),
         builder: (context) {
           return CollectionPage(
             CollectionLens(
@@ -606,7 +606,7 @@ class _EntryViewerStackState extends State<EntryViewerStack> with SingleTickerPr
     // video decoding may fail or have initial artifacts when the player initializes
     // during this widget initialization (because of the page transition and hero animation?)
     // so we play after a delay for increased stability
-    await Future.delayed(Duration(milliseconds: 300) * timeDilation);
+    await Future.delayed(const Duration(milliseconds: 300) * timeDilation);
 
     await videoController.play();
 

lib/widgets/viewer/info/basic_section.dart

@@ -91,9 +91,9 @@ class BasicSection extends StatelessWidget {
           ...filters,
           if (entry.isFavourite) FavouriteFilter.instance,
         ]..sort();
-        if (effectiveFilters.isEmpty) return SizedBox.shrink();
+        if (effectiveFilters.isEmpty) return const SizedBox.shrink();
         return Padding(
-          padding: EdgeInsets.symmetric(horizontal: AvesFilterChip.outlineWidth / 2) + EdgeInsets.only(top: 8),
+          padding: const EdgeInsets.symmetric(horizontal: AvesFilterChip.outlineWidth / 2) + const EdgeInsets.only(top: 8),
           child: Wrap(
             spacing: 8,
             runSpacing: 8,
@@ -151,7 +151,7 @@ class _OwnerPropState extends State<OwnerProp> {
       future: _ownerPackageFuture,
       builder: (context, snapshot) {
         final ownerPackage = snapshot.data;
-        if (ownerPackage == null) return SizedBox();
+        if (ownerPackage == null) return const SizedBox();
         final appName = androidFileUtils.getCurrentAppName(ownerPackage) ?? ownerPackage;
         // as of Flutter v1.22.6, `SelectableText` cannot contain `WidgetSpan`
         // so we use a basic `Text` instead
@@ -168,7 +168,7 @@ class _OwnerPropState extends State<OwnerProp> {
                 WidgetSpan(
                   alignment: PlaceholderAlignment.middle,
                   child: Padding(
-                    padding: EdgeInsets.symmetric(horizontal: 4),
+                    padding: const EdgeInsets.symmetric(horizontal: 4),
                     child: Image(
                       image: AppIconImage(
                         packageName: ownerPackage,

lib/widgets/viewer/info/common.dart

@@ -13,7 +13,7 @@ class SectionRow extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     const dim = 32.0;
-    Widget buildDivider() => SizedBox(
+    Widget buildDivider() => const SizedBox(
           width: dim,
           child: Divider(
             thickness: AvesFilterChip.outlineWidth,
@@ -25,7 +25,7 @@ class SectionRow extends StatelessWidget {
       children: [
         buildDivider(),
         Padding(
-          padding: EdgeInsets.all(16),
+          padding: const EdgeInsets.all(16),
           child: Icon(
             icon,
             size: dim,
@@ -45,7 +45,7 @@ class InfoRowGroup extends StatefulWidget {
   static const keyValuePadding = 16;
   static const linkColor = Colors.blue;
   static const fontSize = 13.0;
-  static final baseStyle = TextStyle(fontSize: fontSize);
+  static const baseStyle = TextStyle(fontSize: fontSize);
   static final keyStyle = baseStyle.copyWith(color: Colors.white70, height: 2.0);
   static final linkStyle = baseStyle.copyWith(color: linkColor, decoration: TextDecoration.underline);
 
@@ -70,7 +70,7 @@ class _InfoRowGroupState extends State<InfoRowGroup> {
 
   @override
   Widget build(BuildContext context) {
-    if (keyValues.isEmpty) return SizedBox.shrink();
+    if (keyValues.isEmpty) return const SizedBox.shrink();
 
     // compute the size of keys and space in order to align values
     final textScaleFactor = MediaQuery.textScaleFactorOf(context);
@@ -143,7 +143,7 @@ class _InfoRowGroupState extends State<InfoRowGroup> {
       span,
       textDirection: TextDirection.ltr,
       textScaleFactor: textScaleFactor,
-    )..layout(BoxConstraints(), parentUsesSize: true);
+    )..layout(const BoxConstraints(), parentUsesSize: true);
     return para.getMaxIntrinsicWidth(double.infinity);
   }
 }

lib/widgets/viewer/info/info_app_bar.dart

@@ -21,8 +21,8 @@ class InfoAppBar extends StatelessWidget {
   Widget build(BuildContext context) {
     return SliverAppBar(
       leading: IconButton(
-        key: Key('back-button'),
+        key: const Key('back-button'),
-        icon: Icon(AIcons.goUp),
+        icon: const Icon(AIcons.goUp),
         onPressed: onBackPressed,
         tooltip: context.l10n.viewerInfoBackToViewerTooltip,
       ),
@@ -32,7 +32,7 @@ class InfoAppBar extends StatelessWidget {
       ),
       actions: [
         IconButton(
-          icon: Icon(AIcons.search),
+          icon: const Icon(AIcons.search),
           onPressed: () => _goToSearch(context),
           tooltip: MaterialLocalizations.of(context).searchFieldLabel,
         ),

lib/widgets/viewer/info/info_page.dart

@@ -67,7 +67,7 @@ class _InfoPageState extends State<InfoPage> {
                                 split: mqWidth > 600,
                                 goToViewer: _goToViewer,
                               )
-                            : SizedBox.shrink();
+                            : const SizedBox.shrink();
                       },
                     );
                   },
@@ -114,7 +114,7 @@ class _InfoPageState extends State<InfoPage> {
     Navigator.push(
       context,
       TransparentMaterialPageRoute(
-        settings: RouteSettings(name: EntryViewerPage.routeName),
+        settings: const RouteSettings(name: EntryViewerPage.routeName),
         pageBuilder: (c, a, sa) => EntryViewerPage(
           initialEntry: tempEntry,
         ),
@@ -175,7 +175,7 @@ class _InfoPageContentState extends State<_InfoPageContent> {
               crossAxisAlignment: CrossAxisAlignment.start,
               children: [
                 Expanded(child: basicSection),
-                SizedBox(width: 8),
+                const SizedBox(width: 8),
                 Expanded(child: locationSection),
               ],
             ),
@@ -202,11 +202,11 @@ class _InfoPageContentState extends State<_InfoPageContent> {
           onBackPressed: widget.goToViewer,
         ),
         SliverPadding(
-          padding: horizontalPadding + EdgeInsets.only(top: 8),
+          padding: horizontalPadding + const EdgeInsets.only(top: 8),
           sliver: basicAndLocationSliver,
         ),
         SliverPadding(
-          padding: horizontalPadding + EdgeInsets.only(bottom: 8),
+          padding: horizontalPadding + const EdgeInsets.only(bottom: 8),
           sliver: metadataSliver,
         ),
         BottomPaddingSliver(),