improve shortcut buttons. (#242)

README.md

@@ -29,6 +29,7 @@ Features:
 - Download stories and comments for offline reading.
 - Pick up where you left off.
 - Synced favorites and pins across devices. (iOS only)
+- Export or import your favorites. 
 - Launch from system share sheet.
 - And more...
 

android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -2,4 +2,5 @@
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
   <background android:drawable="@mipmap/ic_launcher_adaptive_back"/>
   <foreground android:drawable="@mipmap/ic_launcher_adaptive_fore"/>
+  <monochrome android:drawable="@mipmap/ic_launcher_monochrome"/>
 </adaptive-icon>

android/build.gradle

@@ -24,6 +24,6 @@ subprojects {
     project.evaluationDependsOn(':app')
 }
 
-task clean(type: Delete) {
+tasks.register("clean", Delete) {
     delete rootProject.buildDir
 }

ios/Podfile.lock

@@ -27,12 +27,16 @@ PODS:
     - Flutter
   - integration_test (0.0.1):
     - Flutter
+  - MTBBarcodeScanner (5.0.11)
   - OrderedSet (5.0.0)
   - package_info_plus (0.4.5):
     - Flutter
   - path_provider_foundation (0.0.1):
     - Flutter
     - FlutterMacOS
+  - qr_code_scanner (0.2.0):
+    - Flutter
+    - MTBBarcodeScanner
   - ReachabilitySwift (5.0.0)
   - receive_sharing_intent (0.0.1):
     - Flutter
@@ -68,6 +72,7 @@ DEPENDENCIES:
   - integration_test (from `.symlinks/plugins/integration_test/ios`)
   - package_info_plus (from `.symlinks/plugins/package_info_plus/ios`)
   - path_provider_foundation (from `.symlinks/plugins/path_provider_foundation/darwin`)
+  - qr_code_scanner (from `.symlinks/plugins/qr_code_scanner/ios`)
   - receive_sharing_intent (from `.symlinks/plugins/receive_sharing_intent/ios`)
   - share_plus (from `.symlinks/plugins/share_plus/ios`)
   - shared_preferences_foundation (from `.symlinks/plugins/shared_preferences_foundation/darwin`)
@@ -81,6 +86,7 @@ DEPENDENCIES:
 SPEC REPOS:
   trunk:
     - FMDB
+    - MTBBarcodeScanner
     - OrderedSet
     - ReachabilitySwift
 
@@ -109,6 +115,8 @@ EXTERNAL SOURCES:
     :path: ".symlinks/plugins/package_info_plus/ios"
   path_provider_foundation:
     :path: ".symlinks/plugins/path_provider_foundation/darwin"
+  qr_code_scanner:
+    :path: ".symlinks/plugins/qr_code_scanner/ios"
   receive_sharing_intent:
     :path: ".symlinks/plugins/receive_sharing_intent/ios"
   share_plus:
@@ -140,9 +148,11 @@ SPEC CHECKSUMS:
   FMDB: 2ce00b547f966261cd18927a3ddb07cb6f3db82a
   in_app_review: 318597b3a06c22bb46dc454d56828c85f444f99d
   integration_test: 13825b8a9334a850581300559b8839134b124670
+  MTBBarcodeScanner: f453b33c4b7dfe545d8c6484ed744d55671788cb
   OrderedSet: aaeb196f7fef5a9edf55d89760da9176ad40b93c
   package_info_plus: fd030dabf36271f146f1f3beacd48f564b0f17f7
   path_provider_foundation: eaf5b3e458fc0e5fbb9940fb09980e853fe058b8
+  qr_code_scanner: bb67d64904c3b9658ada8c402e8b4d406d5d796e
   ReachabilitySwift: 985039c6f7b23a1da463388634119492ff86c825
   receive_sharing_intent: c0d87310754e74c0f9542947e7cbdf3a0335a3b1
   share_plus: 599aa54e4ea31d4b4c0e9c911bcc26c55e791028

ios/Runner/Info.plist

@@ -76,5 +76,9 @@
 	<false/>
 	<key>UIApplicationSupportsIndirectInputEvents</key>
 	<true/>
+	<key>NSCameraUsageDescription</key>
+    <string>This app needs camera access to scan QR codes</string>
+    <key>io.flutter.embedded_views_preview</key>
+    <true/>
 </dict>
 </plist>

lib/blocs/stories/stories_bloc.dart

@@ -133,6 +133,8 @@ class StoriesBloc extends Bloc<StoriesEvent, StoriesState> {
     StoriesRefresh event,
     Emitter<StoriesState> emit,
   ) async {
+    if (state.statusByType[event.type] == StoriesStatus.loading) return;
+
     emit(
       state.copyWithStatusUpdated(
         type: event.type,

lib/config/constants.dart

@@ -39,8 +39,9 @@ abstract class Constants {
   static const String featureOpenStoryInWebView = 'open_story_in_web_view';
   static const String featureLogIn = 'log_in';
   static const String featurePinToTop = 'pin_to_top';
-  static const String featureJumpUpButton = 'jump_up_button';
+  static const String featureJumpUpButton = 'jump_up_button_with_long_press';
-  static const String featureJumpDownButton = 'jump_down_button';
+  static const String featureJumpDownButton =
+      'jump_down_button_with_long_press';
 
   static final String happyFace = <String>[
     '(๑•̀ㅂ•́)و✧',
@@ -78,3 +79,15 @@ abstract class RegExpConstants {
   static const String linkSuffix = r'(\)|]|,|\*)(.)*$';
   static const String number = '[0-9]+';
 }
+
+abstract class Durations {
+  static const Duration ms100 = Duration(milliseconds: 100);
+  static const Duration ms200 = Duration(milliseconds: 200);
+  static const Duration ms300 = Duration(milliseconds: 300);
+  static const Duration ms400 = Duration(milliseconds: 400);
+  static const Duration ms500 = Duration(milliseconds: 500);
+  static const Duration ms600 = Duration(milliseconds: 600);
+  static const Duration oneSecond = Duration(seconds: 1);
+  static const Duration twoSeconds = Duration(seconds: 2);
+  static const Duration tenSeconds = Duration(seconds: 10);
+}

lib/config/custom_router.dart

@@ -11,10 +11,14 @@ class CustomRouter {
     switch (settings.name) {
       case HomeScreen.routeName:
         return HomeScreen.route();
-      case ItemScreen.routeName:
-        return ItemScreen.route(settings.arguments! as ItemScreenArgs);
       case SubmitScreen.routeName:
         return SubmitScreen.route();
+      case QrCodeScannerScreen.routeName:
+        return QrCodeScannerScreen.route();
+      case ItemScreen.routeName:
+        return ItemScreen.route(settings.arguments! as ItemScreenArgs);
+      case QrCodeViewScreen.routeName:
+        return QrCodeViewScreen.route(data: settings.arguments! as String);
       default:
         return _errorRoute();
     }

lib/cubits/comments/comments_cubit.dart

@@ -5,6 +5,7 @@ import 'package:bloc/bloc.dart';
 import 'package:collection/collection.dart';
 import 'package:equatable/equatable.dart';
 import 'package:flutter/foundation.dart';
+import 'package:hacki/config/constants.dart';
 import 'package:hacki/config/locator.dart';
 import 'package:hacki/cubits/cubits.dart';
 import 'package:hacki/main.dart';
@@ -348,7 +349,8 @@ class CommentsCubit extends Cubit<CommentsState> {
     init(useCommentCache: true);
   }
 
-  void jump(
+  /// Scroll to next root level comment.
+  void scrollToNextRoot(
     ItemScrollController itemScrollController,
     ItemPositionsListener itemPositionsListener,
   ) {
@@ -378,14 +380,15 @@ class CommentsCubit extends Cubit<CommentsState> {
         itemScrollController.scrollTo(
           index: i + 1,
           alignment: 0.15,
-          duration: const Duration(milliseconds: 400),
+          duration: Durations.ms400,
         );
         return;
       }
     }
   }
 
-  void jumpUp(
+  /// Scroll to previous root level comment.
+  void scrollToPreviousRoot(
     ItemScrollController itemScrollController,
     ItemPositionsListener itemPositionsListener,
   ) {
@@ -416,7 +419,7 @@ class CommentsCubit extends Cubit<CommentsState> {
         itemScrollController.scrollTo(
           index: i + 1,
           alignment: 0.15,
-          duration: const Duration(milliseconds: 400),
+          duration: Durations.ms400,
         );
         return;
       }

lib/cubits/edit/edit_cubit.dart

@@ -1,4 +1,5 @@
 import 'package:equatable/equatable.dart';
+import 'package:hacki/config/constants.dart';
 import 'package:hacki/config/locator.dart';
 import 'package:hacki/extensions/extensions.dart';
 import 'package:hacki/models/models.dart';
@@ -11,7 +12,7 @@ part 'edit_state.dart';
 class EditCubit extends HydratedCubit<EditState> {
   EditCubit({DraftCache? draftCache})
       : _draftCache = draftCache ?? locator.get<DraftCache>(),
-        _debouncer = Debouncer(delay: const Duration(seconds: 1)),
+        _debouncer = Debouncer(delay: Durations.oneSecond),
         super(const EditState.init());
 
   final DraftCache _draftCache;

lib/cubits/notification/notification_cubit.dart

@@ -4,6 +4,7 @@ import 'dart:math';
 import 'package:bloc/bloc.dart';
 import 'package:equatable/equatable.dart';
 import 'package:hacki/blocs/blocs.dart';
+import 'package:hacki/config/constants.dart';
 import 'package:hacki/config/locator.dart';
 import 'package:hacki/cubits/cubits.dart';
 import 'package:hacki/models/models.dart';
@@ -31,7 +32,7 @@ class NotificationCubit extends Cubit<NotificationState> {
       if (authState.isLoggedIn && authState.username != _username) {
         // Get the user setting.
         if (_preferenceCubit.state.notificationEnabled) {
-          Future<void>.delayed(const Duration(seconds: 2), init);
+          Future<void>.delayed(Durations.twoSeconds, init);
         }
 
         // Listen for setting changes in the future.

lib/cubits/pin/pin_cubit.dart

@@ -27,7 +27,7 @@ class PinCubit extends Cubit<PinState> {
       emit(state.copyWith(pinnedStoriesIds: ids));
 
       _storiesRepository.fetchStoriesStream(ids: ids).listen(_onStoryFetched);
-    });
+    }).whenComplete(() => emit(state.copyWith(status: Status.loaded)));
   }
 
   void pinStory(Story story) {
@@ -52,7 +52,10 @@ class PinCubit extends Cubit<PinState> {
     _preferenceRepository.updatePinnedStoriesIds(state.pinnedStoriesIds);
   }
 
-  void refresh() => init();
+  void refresh() {
+    if (state.status == Status.loading) return;
+    init();
+  }
 
   void _onStoryFetched(Story story) {
     emit(state.copyWith(pinnedStories: <Story>[...state.pinnedStories, story]));

lib/cubits/pin/pin_state.dart

@@ -4,22 +4,27 @@ class PinState extends Equatable {
   const PinState({
     required this.pinnedStoriesIds,
     required this.pinnedStories,
+    required this.status,
   });
 
   PinState.init()
       : pinnedStoriesIds = <int>[],
-        pinnedStories = <Story>[];
+        pinnedStories = <Story>[],
+        status = Status.idle;
 
   final List<int> pinnedStoriesIds;
   final List<Story> pinnedStories;
+  final Status status;
 
   PinState copyWith({
     List<int>? pinnedStoriesIds,
     List<Story>? pinnedStories,
+    Status? status,
   }) {
     return PinState(
       pinnedStoriesIds: pinnedStoriesIds ?? this.pinnedStoriesIds,
       pinnedStories: pinnedStories ?? this.pinnedStories,
+      status: status ?? this.status,
     );
   }
 
@@ -27,5 +32,6 @@ class PinState extends Equatable {
   List<Object?> get props => <Object?>[
         pinnedStoriesIds,
         pinnedStories,
+        status,
       ];
 }

lib/cubits/post/post_cubit.dart

@@ -20,9 +20,6 @@ class PostCubit extends Cubit<PostState> {
       text: text,
     );
 
-    // final successful =
-    //     await Future<bool>.delayed(const Duration(seconds: 2), () => true);
-
     if (successful) {
       emit(state.copyWith(status: PostStatus.successful));
     } else {

lib/cubits/preference/preference_state.dart

@@ -68,6 +68,8 @@ class PreferenceState extends Equatable {
 
   bool get swipeGestureEnabled => _isOn<SwipeGesturePreference>();
 
+  bool get autoScrollEnabled => _isOn<AutoScrollModePreference>();
+
   List<StoryType> get tabs {
     final String result =
         preferences.singleWhereType<TabOrderPreference>().val.toString();

lib/cubits/search/search_state.dart

@@ -23,6 +23,12 @@ class SearchState extends Equatable {
   final SearchStatus status;
   final SearchParams params;
 
+  bool get hasDateFilter =>
+      params.filters.whereType<DateTimeRangeFilter>().isNotEmpty;
+
+  DateTimeRangeFilter? get dateFilter =>
+      params.filters.whereType<DateTimeRangeFilter>().singleOrNull;
+
   SearchState copyWith({
     List<Item>? results,
     SearchStatus? status,
@@ -42,3 +48,11 @@ class SearchState extends Equatable {
         params,
       ];
 }
+
+extension SearchStateExtension on SearchState {
+  bool get showDateRangeShortcutChips {
+    return hasDateFilter &&
+        dateFilter?.startTime != null &&
+        dateFilter?.endTime != null;
+  }
+}

lib/main.dart

@@ -7,6 +7,7 @@ import 'package:equatable/equatable.dart';
 import 'package:feature_discovery/feature_discovery.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/scheduler.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_local_notifications/flutter_local_notifications.dart';
@@ -268,8 +269,8 @@ class HackiApp extends StatelessWidget {
               AsyncSnapshot<AdaptiveThemeMode?> snapshot,
             ) {
               final AdaptiveThemeMode? mode = snapshot.data;
-              ThemeUtil.updateAndroidStatusBarSetting(
+              ThemeUtil.updateStatusBarSetting(
-                Theme.of(context).brightness,
+                SchedulerBinding.instance.platformDispatcher.platformBrightness,
                 mode,
               );
               return BlocBuilder<PreferenceCubit, PreferenceState>(
@@ -288,7 +289,9 @@ class HackiApp extends StatelessWidget {
                     child: MaterialApp(
                       title: 'Hacki',
                       debugShowCheckedModeBanner: false,
-                      theme: useTrueDark ? trueDarkTheme : theme,
+                      theme: (useTrueDark ? trueDarkTheme : theme).copyWith(
+                        useMaterial3: false,
+                      ),
                       navigatorKey: navigatorKey,
                       navigatorObservers: <NavigatorObserver>[
                         locator.get<RouteObserver<ModalRoute<dynamic>>>(),

lib/models/export_destination.dart

@@ -0,0 +1,14 @@
+import 'package:flutter/material.dart' show IconData, Icons;
+
+enum ExportDestination {
+  qrCode('QR code', icon: Icons.qr_code),
+  clipBoard('ClipBoard', icon: Icons.copy);
+
+  const ExportDestination(
+    this.label, {
+    required this.icon,
+  });
+
+  final String label;
+  final IconData icon;
+}

lib/models/font_size.dart

@@ -4,7 +4,8 @@ enum FontSize {
   small('Small', TextDimens.pt15),
   regular('Regular', TextDimens.pt16),
   large('Large', TextDimens.pt17),
-  xlarge('XLarge', TextDimens.pt18);
+  xlarge('XLarge', TextDimens.pt18),
+  xxlarge('XXLarge', TextDimens.pt19);
 
   const FontSize(this.description, this.fontSize);
 

lib/models/models.dart

@@ -1,4 +1,5 @@
 export 'comments_order.dart';
+export 'export_destination.dart';
 export 'fetch_mode.dart';
 export 'font.dart';
 export 'font_size.dart';
@@ -6,5 +7,6 @@ export 'item/item.dart';
 export 'post_data.dart';
 export 'preference.dart';
 export 'search_params.dart';
+export 'status.dart';
 export 'story_type.dart';
 export 'user.dart';

lib/models/preference.dart

@@ -30,6 +30,7 @@ abstract class Preference<T> extends Equatable with SettingsDisplayable {
       const StoryUrlModePreference(),
       const NotificationModePreference(),
       const SwipeGesturePreference(),
+      const AutoScrollModePreference(),
       const CollapseModePreference(),
       const ReaderModePreference(),
       const MarkReadStoriesModePreference(),
@@ -54,12 +55,13 @@ const bool _notificationModeDefaultValue = true;
 const bool _swipeGestureModeDefaultValue = false;
 const bool _displayModeDefaultValue = true;
 const bool _eyeCandyModeDefaultValue = false;
-const bool _trueDarkModeDefaultValue = false;
+const bool _trueDarkModeDefaultValue = true;
 const bool _readerModeDefaultValue = true;
 const bool _markReadStoriesModeDefaultValue = true;
 const bool _metadataModeDefaultValue = true;
 const bool _storyUrlModeDefaultValue = true;
 const bool _collapseModeDefaultValue = true;
+const bool _autoScrollModeDefaultValue = true;
 final int _fetchModeDefaultValue = FetchMode.eager.index;
 final int _commentsOrderDefaultValue = CommentsOrder.natural.index;
 final int _fontSizeDefaultValue = FontSize.regular.index;
@@ -127,6 +129,26 @@ class CollapseModePreference extends BooleanPreference {
       '''if disabled, tap on the top of comment tile to collapse.''';
 }
 
+class AutoScrollModePreference extends BooleanPreference {
+  const AutoScrollModePreference({bool? val})
+      : super(val: val ?? _autoScrollModeDefaultValue);
+
+  @override
+  AutoScrollModePreference copyWith({required bool? val}) {
+    return AutoScrollModePreference(val: val);
+  }
+
+  @override
+  String get key => 'autoScrollMode';
+
+  @override
+  String get title => 'Auto-scroll on collapsing';
+
+  @override
+  String get subtitle =>
+      '''automatically scroll to next comment when you collapse a comment.''';
+}
+
 /// The value deciding whether or not the story
 /// tile should display link preview. Defaults to true.
 class DisplayModePreference extends BooleanPreference {

lib/models/search_filter.dart

@@ -30,14 +30,27 @@ class DateTimeRangeFilter implements NumericFilter {
 
   @override
   String get query {
+    if (startTime == null || endTime == null) return '';
+
     final int? startTimestamp = startTime == null
         ? null
         : startTime!.toUtc().millisecondsSinceEpoch ~/ 1000;
-    final int? endTimestamp = endTime == null
+    int? endTimestamp = endTime == null
         ? null
         : endTime!.toUtc().millisecondsSinceEpoch ~/ 1000;
+
+    if (startTimestamp == endTimestamp) {
+      endTimestamp = startTime!
+              .add(const Duration(hours: 24))
+              .toUtc()
+              .millisecondsSinceEpoch ~/
+          1000;
+    }
+
+    if (startTimestamp == null || endTimestamp == null) return '';
+
     final String query =
-        '''${startTimestamp == null ? '' : 'created_at_i>$startTimestamp'},${endTimestamp == null ? '' : 'created_at_i<$endTimestamp'}''';
+        '''created_at_i>=$startTimestamp, created_at_i<=$endTimestamp''';
 
     if (query.endsWith(',')) {
       return query.replaceFirst(',', '');

lib/models/status.dart

@@ -0,0 +1,6 @@
+enum Status {
+  idle,
+  loading,
+  loaded,
+  error,
+}

lib/screens/home/home_screen.dart

@@ -57,7 +57,7 @@ class _HomeScreenState extends State<HomeScreen>
         DeviceScreenType.mobile) {
       locator.get<Logger>().i('resetting comments in CommentCache');
       Future<void>.delayed(
-        const Duration(milliseconds: 500),
+        Durations.ms500,
         locator.get<CommentCache>().resetComments,
       );
     }

lib/screens/home/widgets/tablet_home_screen.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart' hide Badge;
 import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:hacki/config/constants.dart';
 import 'package:hacki/cubits/cubits.dart';
 import 'package:hacki/screens/screens.dart';
 import 'package:hacki/screens/widgets/widgets.dart';
@@ -36,7 +37,7 @@ class TabletHomeScreen extends StatelessWidget {
                   top: Dimens.zero,
                   bottom: Dimens.zero,
                   width: homeScreenWidth,
-                  duration: const Duration(milliseconds: 300),
+                  duration: Durations.ms300,
                   curve: Curves.elasticOut,
                   child: homeScreen,
                 ),
@@ -52,7 +53,7 @@ class TabletHomeScreen extends StatelessWidget {
                   top: Dimens.zero,
                   bottom: Dimens.zero,
                   left: state.expanded ? Dimens.zero : homeScreenWidth,
-                  duration: const Duration(milliseconds: 300),
+                  duration: Durations.ms300,
                   curve: Curves.elasticOut,
                   child: const _TabletStoryView(),
                 ),

lib/screens/item/item_screen.dart

@@ -153,9 +153,9 @@ class _ItemScreenState extends State<ItemScreen> with RouteAware {
   );
   final GlobalKey fontSizeIconButtonKey = GlobalKey();
 
-  static const Duration _storyLinkTapThrottleDelay = Duration(seconds: 2);
+  static const Duration _storyLinkTapThrottleDelay = Durations.twoSeconds;
   static const Duration _featureDiscoveryDismissThrottleDelay =
-      Duration(seconds: 1);
+      Durations.oneSecond;
 
   @override
   void didPop() {

lib/screens/item/widgets/custom_app_bar.dart

@@ -43,6 +43,7 @@ class CustomAppBar extends AppBar {
                   fontFamily: FeatherIcons.type.fontFamily,
                   package: FeatherIcons.type.fontPackage,
                 ),
+                textScaleFactor: 1,
               ),
               onPressed: onFontSizeTap,
             ),

lib/screens/item/widgets/custom_floating_action_button.dart

@@ -32,30 +32,32 @@ class CustomFloatingActionButton extends StatelessWidget {
                 Icons.keyboard_arrow_up,
                 color: Palette.white,
               ),
-              title: const Text('Jump to previous root level comment.'),
+              title: const Text('Shortcut'),
               description: const Text(
-                '''Tapping on this button will take you to the previous off-screen root level comment.''',
+                '''Tapping on this button will take you to the previous off-screen root level comment.\n\nLong press on it to jump to the very beginning of this thread.''',
               ),
-              child: FloatingActionButton.small(
+              child: InkWell(
-                backgroundColor: Theme.of(context).scaffoldBackgroundColor,
+                onLongPress: () => itemScrollController.scrollTo(
+                  index: 0,
+                  duration: Durations.ms400,
+                ),
+                child: FloatingActionButton.small(
+                  backgroundColor: Theme.of(context).scaffoldBackgroundColor,
 
-                /// Randomly generated string as heroTag to prevent
+                  /// Randomly generated string as heroTag to prevent
-                /// default [FloatingActionButton] animation.
+                  /// default [FloatingActionButton] animation.
-                heroTag: UniqueKey().hashCode,
+                  heroTag: UniqueKey().hashCode,
-                onPressed: () {
+                  onPressed: () {
-                  if (state.status == CommentsStatus.loading) return;
+                    HapticFeedbackUtil.selection();
-
+                    context.read<CommentsCubit>().scrollToPreviousRoot(
-                  HapticFeedbackUtil.selection();
+                          itemScrollController,
-                  context.read<CommentsCubit>().jumpUp(
+                          itemPositionsListener,
-                        itemScrollController,
+                        );
-                        itemPositionsListener,
+                  },
-                      );
+                  child: Icon(
-                },
+                    Icons.keyboard_arrow_up,
-                child: Icon(
+                    color: Theme.of(context).colorScheme.primary,
-                  Icons.keyboard_arrow_up,
+                  ),
-                  color: state.status == CommentsStatus.loading
-                      ? Palette.grey
-                      : Theme.of(context).colorScheme.primary,
                 ),
               ),
             ),
@@ -65,29 +67,31 @@ class CustomFloatingActionButton extends StatelessWidget {
                 Icons.keyboard_arrow_down,
                 color: Palette.white,
               ),
-              title: const Text('Jump to next root level comment.'),
+              title: const Text('Shortcut'),
               description: const Text(
-                '''Tapping on this button will take you to the next off-screen root level comment.''',
+                '''Tapping on this button will take you to the next off-screen root level comment.\n\nLong press on it to jump to the end of this thread.''',
               ),
-              child: FloatingActionButton.small(
+              child: InkWell(
-                backgroundColor: Theme.of(context).scaffoldBackgroundColor,
+                onLongPress: () => itemScrollController.scrollTo(
+                  index: state.comments.length,
+                  duration: Durations.ms400,
+                ),
+                child: FloatingActionButton.small(
+                  backgroundColor: Theme.of(context).scaffoldBackgroundColor,
 
-                /// Same as above.
+                  /// Same as above.
-                heroTag: UniqueKey().hashCode,
+                  heroTag: UniqueKey().hashCode,
-                onPressed: () {
+                  onPressed: () {
-                  if (state.status == CommentsStatus.loading) return;
+                    HapticFeedbackUtil.selection();
-
+                    context.read<CommentsCubit>().scrollToNextRoot(
-                  HapticFeedbackUtil.selection();
+                          itemScrollController,
-                  context.read<CommentsCubit>().jump(
+                          itemPositionsListener,
-                        itemScrollController,
+                        );
-                        itemPositionsListener,
+                  },
-                      );
+                  child: Icon(
-                },
+                    Icons.keyboard_arrow_down,
-                child: Icon(
+                    color: Theme.of(context).colorScheme.primary,
-                  Icons.keyboard_arrow_down,
+                  ),
-                  color: state.status == CommentsStatus.loading
-                      ? Palette.grey
-                      : Theme.of(context).colorScheme.primary,
                 ),
               ),
             ),

lib/screens/item/widgets/main_view.dart

@@ -139,6 +139,7 @@ class MainView extends StatelessWidget {
                           },
                           onMoreTapped: onMoreTapped,
                           onRightMoreTapped: onRightMoreTapped,
+                          itemScrollController: itemScrollController,
                         ),
                       );
                     },
@@ -254,6 +255,8 @@ class _ParentItemSection extends StatelessWidget {
                           style: const TextStyle(
                             color: Palette.orange,
                           ),
+                          textScaleFactor:
+                              MediaQuery.of(context).textScaleFactor,
                         ),
                         const Spacer(),
                         Text(
@@ -261,6 +264,8 @@ class _ParentItemSection extends StatelessWidget {
                           style: const TextStyle(
                             color: Palette.grey,
                           ),
+                          textScaleFactor:
+                              MediaQuery.of(context).textScaleFactor,
                         ),
                       ],
                     ),
@@ -333,9 +338,8 @@ class _ParentItemSection extends StatelessWidget {
                                     ],
                                   ),
                                   textAlign: TextAlign.center,
-                                  textScaleFactor: MediaQuery.of(
+                                  textScaleFactor:
-                                    context,
+                                      MediaQuery.of(context).textScaleFactor,
-                                  ).textScaleFactor,
                                 ),
                               ),
                             )
@@ -353,6 +357,8 @@ class _ParentItemSection extends StatelessWidget {
                                   ),
                                   child: ItemText(
                                     item: state.item,
+                                    textScaleFactor:
+                                        MediaQuery.of(context).textScaleFactor,
                                   ),
                                 ),
                               ),
@@ -401,6 +407,7 @@ class _ParentItemSection extends StatelessWidget {
                     style: const TextStyle(
                       fontSize: TextDimens.pt13,
                     ),
+                    textScaleFactor: 1,
                   ),
                 ] else ...<Widget>[
                   const SizedBox(
@@ -443,6 +450,7 @@ class _ParentItemSection extends StatelessWidget {
                               style: TextStyle(
                                 fontSize: TextDimens.pt13,
                               ),
+                              textScaleFactor: 1,
                             ),
                     ),
                   ),
@@ -461,6 +469,7 @@ class _ParentItemSection extends StatelessWidget {
                               style: const TextStyle(
                                 fontSize: TextDimens.pt13,
                               ),
+                              textScaleFactor: 1,
                             ),
                           ),
                         )
@@ -482,6 +491,7 @@ class _ParentItemSection extends StatelessWidget {
                             style: const TextStyle(
                               fontSize: TextDimens.pt13,
                             ),
+                            textScaleFactor: 1,
                           ),
                         ),
                       )

lib/screens/item/widgets/reply_box.dart

@@ -2,6 +2,7 @@ import 'package:clipboard/clipboard.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_feather_icons/flutter_feather_icons.dart';
+import 'package:hacki/config/constants.dart';
 import 'package:hacki/cubits/cubits.dart';
 import 'package:hacki/extensions/extensions.dart';
 import 'package:hacki/models/item/item.dart';
@@ -60,7 +61,7 @@ class _ReplyBoxState extends State<ReplyBox> {
               ),
               child: AnimatedContainer(
                 height: expanded ? expandedHeight : _collapsedHeight,
-                duration: const Duration(milliseconds: 200),
+                duration: Durations.ms200,
                 decoration: BoxDecoration(
                   boxShadow: <BoxShadow>[
                     if (!context.read<SplitViewCubit>().state.enabled)
@@ -79,7 +80,7 @@ class _ReplyBoxState extends State<ReplyBox> {
                         ),
                       AnimatedContainer(
                         height: expanded ? Dimens.pt36 : Dimens.zero,
-                        duration: const Duration(milliseconds: 200),
+                        duration: Durations.ms200,
                       ),
                       Row(
                         children: <Widget>[
@@ -107,7 +108,7 @@ class _ReplyBoxState extends State<ReplyBox> {
                                 AnimatedOpacity(
                                   opacity:
                                       expanded ? NumSwitch.on : NumSwitch.off,
-                                  duration: const Duration(milliseconds: 300),
+                                  duration: Durations.ms300,
                                   child: IconButton(
                                     key: const Key('quote'),
                                     icon: const Icon(
@@ -344,6 +345,8 @@ class _ReplyBoxState extends State<ReplyBox> {
                       child: SingleChildScrollView(
                         child: ItemText(
                           item: replyingTo,
+                          textScaleFactor:
+                              MediaQuery.of(context).textScaleFactor,
                         ),
                       ),
                     ),

lib/screens/profile/profile_screen.dart

@@ -29,7 +29,7 @@ class _ProfileScreenState extends State<ProfileScreen>
   final RefreshController refreshControllerFav = RefreshController();
   final RefreshController refreshControllerNotification = RefreshController();
   final ScrollController scrollController = ScrollController();
-  final Throttle throttle = Throttle(delay: const Duration(seconds: 2));
+  final Throttle throttle = Throttle(delay: Durations.twoSeconds);
 
   PageType pageType = PageType.notification;
 

lib/screens/profile/qr_code_scanner_screen.dart

@@ -0,0 +1,78 @@
+import 'package:flutter/material.dart';
+import 'package:hacki/main.dart';
+import 'package:hacki/styles/styles.dart';
+import 'package:qr_code_scanner/qr_code_scanner.dart';
+
+class QrCodeScannerScreen extends StatefulWidget {
+  const QrCodeScannerScreen({super.key});
+
+  static const String routeName = '/qr-code-scanner';
+
+  static Route<dynamic> route() {
+    return MaterialPageRoute<String?>(
+      settings: const RouteSettings(name: routeName),
+      builder: (_) => const QrCodeScannerScreen(),
+    );
+  }
+
+  @override
+  State<QrCodeScannerScreen> createState() => _QrCodeScannerScreenState();
+}
+
+class _QrCodeScannerScreenState extends State<QrCodeScannerScreen> {
+  final GlobalKey qrKey = GlobalKey(debugLabel: 'QR');
+  QRViewController? controller;
+  bool isFlashOn = false;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        elevation: 0,
+        backgroundColor: Palette.transparent,
+        actions: <Widget>[
+          IconButton(
+            icon: Icon(isFlashOn ? Icons.flash_off : Icons.flash_on),
+            onPressed: () {
+              controller?.toggleFlash();
+              setState(() {
+                isFlashOn = !isFlashOn;
+              });
+            },
+          ),
+          IconButton(
+            icon: const Icon(Icons.cameraswitch_outlined),
+            onPressed: controller?.flipCamera,
+          ),
+        ],
+      ),
+      extendBodyBehindAppBar: true,
+      body: Column(
+        children: <Widget>[
+          Expanded(
+            child: QRView(
+              key: qrKey,
+              onQRViewCreated: onQRViewCreated,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void onQRViewCreated(QRViewController controller) {
+    setState(() {
+      this.controller = controller;
+    });
+    controller.scannedDataStream.listen((Barcode scanData) {
+      controller.stopCamera();
+      HackiApp.navigatorKey.currentState?.pop(scanData.code);
+    });
+  }
+
+  @override
+  void dispose() {
+    controller?.dispose();
+    super.dispose();
+  }
+}

lib/screens/profile/qr_code_view_screen.dart

@@ -0,0 +1,55 @@
+import 'package:flutter/material.dart';
+import 'package:hacki/styles/palette.dart';
+import 'package:qr_flutter/qr_flutter.dart';
+
+class QrCodeViewScreen extends StatelessWidget {
+  const QrCodeViewScreen({
+    required this.data,
+    super.key,
+  });
+
+  final String data;
+
+  static const String routeName = '/qr-code-view';
+
+  static Route<dynamic> route({required String data}) {
+    return MaterialPageRoute<QrCodeViewScreen>(
+      settings: const RouteSettings(name: routeName),
+      builder: (_) => QrCodeViewScreen(
+        data: data,
+      ),
+    );
+  }
+
+  static const int qrCodeVersion = 4;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        elevation: 0,
+        backgroundColor: Palette.transparent,
+      ),
+      body: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: <Widget>[
+          Center(
+            child: QrImageView(
+              data: data,
+              dataModuleStyle: QrDataModuleStyle(
+                dataModuleShape: QrDataModuleShape.square,
+                color: Theme.of(context).colorScheme.onSurface,
+              ),
+              eyeStyle: QrEyeStyle(
+                eyeShape: QrEyeShape.square,
+                color: Theme.of(context).colorScheme.onSurface,
+              ),
+              version: qrCodeVersion,
+              size: 300,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/screens/profile/widgets/settings.dart

@@ -1,8 +1,10 @@
+import 'dart:async';
 import 'dart:io';
 
 import 'package:adaptive_theme/adaptive_theme.dart';
 import 'package:clipboard/clipboard.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/scheduler.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_cache_manager/flutter_cache_manager.dart';
 import 'package:flutter_email_sender/flutter_email_sender.dart';
@@ -13,9 +15,12 @@ import 'package:hacki/config/constants.dart';
 import 'package:hacki/config/locator.dart';
 import 'package:hacki/cubits/cubits.dart';
 import 'package:hacki/extensions/extensions.dart';
+import 'package:hacki/main.dart';
 import 'package:hacki/models/models.dart';
 import 'package:hacki/repositories/repositories.dart';
 import 'package:hacki/screens/profile/models/page_type.dart';
+import 'package:hacki/screens/profile/qr_code_scanner_screen.dart';
+import 'package:hacki/screens/profile/qr_code_view_screen.dart';
 import 'package:hacki/screens/profile/widgets/offline_list_tile.dart';
 import 'package:hacki/screens/profile/widgets/tab_bar_settings.dart';
 import 'package:hacki/screens/widgets/widgets.dart';
@@ -243,6 +248,13 @@ class _SettingsState extends State<Settings> {
                     ),
                     onTap: onExportFavoritesTapped,
                   ),
+                  ListTile(
+                    title: const Text(
+                      'Import Favorites',
+                    ),
+                    onTap: () =>
+                        onImportFavoritesTapped(context.read<FavCubit>()),
+                  ),
                   ListTile(
                     title: const Text(
                       'Clear Favorites',
@@ -404,8 +416,9 @@ class _SettingsState extends State<Settings> {
         AdaptiveTheme.of(context).setSystem();
     }
 
-    final Brightness brightness = Theme.of(context).brightness;
+    final Brightness brightness =
-    ThemeUtil.updateAndroidStatusBarSetting(brightness, val);
+        SchedulerBinding.instance.platformDispatcher.platformBrightness;
+    ThemeUtil.updateStatusBarSetting(brightness, val);
   }
 
   void showClearCacheDialog() {
@@ -752,20 +765,68 @@ class _SettingsState extends State<Settings> {
   }
 
   Future<void> onExportFavoritesTapped() async {
-    final List<int> allFavorites = context.read<FavCubit>().state.favIds;
+    return showModalBottomSheet<ExportDestination>(
+      context: context,
+      builder: (BuildContext context) {
+        return SafeArea(
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: <Widget>[
+              ...ExportDestination.values.map(
+                (ExportDestination e) => ListTile(
+                  leading: Icon(e.icon),
+                  title: Text(e.label),
+                  onTap: () => Navigator.pop<ExportDestination>(context, e),
+                ),
+              ),
+            ],
+          ),
+        );
+      },
+    ).then(
+      (ExportDestination? destination) => exportFavorites(to: destination),
+    );
+  }
 
+  Future<void> onImportFavoritesTapped(FavCubit favCubit) async {
+    final String? res = await HackiApp.navigatorKey.currentState
+        ?.pushNamed(QrCodeScannerScreen.routeName) as String?;
+    final List<int>? ids =
+        res?.split('\n').map(int.tryParse).whereType<int>().toList();
+    if (ids == null) return;
+    for (final int id in ids) {
+      await favCubit.addFav(id);
+    }
+    showSnackBar(content: 'Favorites imported successfully.');
+  }
+
+  Future<void> exportFavorites({required ExportDestination? to}) async {
+    final ExportDestination? destination = to;
+    if (destination == null) return;
+
+    final List<int> allFavorites = context.read<FavCubit>().state.favIds;
     if (allFavorites.isEmpty) {
       showSnackBar(content: "You don't have any favorite item.");
       return;
     }
+    final String allFavoritesStr = allFavorites.join('\n');
 
-    try {
+    switch (destination) {
-      await FlutterClipboard.copy(
+      case ExportDestination.qrCode:
-        allFavorites.join('\n'),
+        await HackiApp.navigatorKey.currentState?.pushNamed(
-      ).whenComplete(HapticFeedbackUtil.selection);
+          QrCodeViewScreen.routeName,
-      showSnackBar(content: 'Ids of favorites have been copied to clipboard.');
+          arguments: allFavoritesStr,
-    } catch (error, stackTrace) {
+        );
-      error.logError(stackTrace: stackTrace);
+      case ExportDestination.clipBoard:
+        try {
+          await FlutterClipboard.copy(allFavoritesStr)
+              .whenComplete(HapticFeedbackUtil.selection);
+          showSnackBar(
+            content: 'Ids of favorites have been copied to clipboard.',
+          );
+        } catch (error, stackTrace) {
+          error.logError(stackTrace: stackTrace);
+        }
     }
   }
 

lib/screens/screens.dart

@@ -1,6 +1,8 @@
 export 'home/home_screen.dart';
 export 'item/item_screen.dart';
 export 'profile/profile_screen.dart';
+export 'profile/qr_code_scanner_screen.dart';
+export 'profile/qr_code_view_screen.dart';
 export 'search/search_screen.dart';
 export 'submit/submit_screen.dart';
 export 'web_view/web_view_screen.dart';

lib/screens/search/search_screen.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_fadein/flutter_fadein.dart';
+import 'package:hacki/config/constants.dart';
 import 'package:hacki/cubits/cubits.dart';
 import 'package:hacki/extensions/extensions.dart';
 import 'package:hacki/models/models.dart';
@@ -28,7 +29,17 @@ class SearchScreen extends StatefulWidget {
 
 class _SearchScreenState extends State<SearchScreen> {
   final RefreshController refreshController = RefreshController();
-  final Debouncer debouncer = Debouncer(delay: const Duration(seconds: 1));
+  final ScrollController scrollController = ScrollController();
+  final Debouncer debouncer = Debouncer(delay: Durations.oneSecond);
+
+  static const Duration chipsAnimationDuration = Durations.ms300;
+
+  @override
+  void dispose() {
+    refreshController.dispose();
+    scrollController.dispose();
+    super.dispose();
+  }
 
   @override
   Widget build(BuildContext context) {
@@ -72,6 +83,85 @@ class _SearchScreenState extends State<SearchScreen> {
                   const SizedBox(
                     height: Dimens.pt6,
                   ),
+                  AnimatedCrossFade(
+                    duration: chipsAnimationDuration,
+                    crossFadeState: state.showDateRangeShortcutChips
+                        ? CrossFadeState.showSecond
+                        : CrossFadeState.showFirst,
+                    firstChild: SizedBox.fromSize(),
+                    secondChild: Column(
+                      mainAxisSize: MainAxisSize.min,
+                      children: <Widget>[
+                        SingleChildScrollView(
+                          scrollDirection: Axis.horizontal,
+                          child: Row(
+                            children: <Widget>[
+                              const SizedBox(
+                                width: Dimens.pt8,
+                              ),
+                              DateTimeShortcutChip.dayBefore(
+                                onDateTimeRangeUpdated: context
+                                    .read<SearchCubit>()
+                                    .onDateTimeRangeUpdated,
+                                startDate: state.dateFilter?.startTime,
+                                endDate: state.dateFilter?.endTime,
+                              ),
+                              const SizedBox(
+                                width: Dimens.pt8,
+                              ),
+                              DateTimeShortcutChip.dayAfter(
+                                onDateTimeRangeUpdated: context
+                                    .read<SearchCubit>()
+                                    .onDateTimeRangeUpdated,
+                                startDate: state.dateFilter?.startTime,
+                                endDate: state.dateFilter?.endTime,
+                              ),
+                              const SizedBox(
+                                width: Dimens.pt8,
+                              ),
+                              DateTimeShortcutChip.weekBefore(
+                                onDateTimeRangeUpdated: context
+                                    .read<SearchCubit>()
+                                    .onDateTimeRangeUpdated,
+                                startDate: state.dateFilter?.startTime,
+                                endDate: state.dateFilter?.endTime,
+                              ),
+                              const SizedBox(
+                                width: Dimens.pt8,
+                              ),
+                              DateTimeShortcutChip.weekAfter(
+                                onDateTimeRangeUpdated: context
+                                    .read<SearchCubit>()
+                                    .onDateTimeRangeUpdated,
+                                startDate: state.dateFilter?.startTime,
+                                endDate: state.dateFilter?.endTime,
+                              ),
+                              const SizedBox(
+                                width: Dimens.pt8,
+                              ),
+                              DateTimeShortcutChip.monthBefore(
+                                onDateTimeRangeUpdated: context
+                                    .read<SearchCubit>()
+                                    .onDateTimeRangeUpdated,
+                                startDate: state.dateFilter?.startTime,
+                                endDate: state.dateFilter?.endTime,
+                              ),
+                              const SizedBox(
+                                width: Dimens.pt8,
+                              ),
+                              DateTimeShortcutChip.monthAfter(
+                                onDateTimeRangeUpdated: context
+                                    .read<SearchCubit>()
+                                    .onDateTimeRangeUpdated,
+                                startDate: state.dateFilter?.startTime,
+                                endDate: state.dateFilter?.endTime,
+                              ),
+                            ],
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
                   SingleChildScrollView(
                     scrollDirection: Axis.horizontal,
                     child: Row(
@@ -80,7 +170,9 @@ class _SearchScreenState extends State<SearchScreen> {
                           width: Dimens.pt8,
                         ),
                         DateTimeRangeFilterChip(
-                          filter: state.params.get<DateTimeRangeFilter>(),
+                          filter: state.dateFilter,
+                          initialStartDate: state.dateFilter?.startTime,
+                          initialEndDate: state.dateFilter?.endTime,
                           onDateTimeRangeUpdated: context
                               .read<SearchCubit>()
                               .onDateTimeRangeUpdated,
@@ -200,11 +292,15 @@ class _SearchScreenState extends State<SearchScreen> {
                         },
                       ),
                       controller: refreshController,
+                      scrollController: scrollController,
                       onRefresh: () {},
                       onLoading: () {
                         context.read<SearchCubit>().loadMore();
                       },
                       child: ListView(
+                        physics: state.results.isEmpty
+                            ? const NeverScrollableScrollPhysics()
+                            : null,
                         children: <Widget>[
                           ...state.results
                               .map(

lib/screens/search/widgets/date_time_range_filter_chip.dart

@@ -6,12 +6,16 @@ import 'package:intl/intl.dart';
 class DateTimeRangeFilterChip extends StatelessWidget {
   const DateTimeRangeFilterChip({
     required this.filter,
+    required this.initialStartDate,
+    required this.initialEndDate,
     required this.onDateTimeRangeUpdated,
     required this.onDateTimeRangeRemoved,
     super.key,
   });
 
   final DateTimeRangeFilter? filter;
+  final DateTime? initialStartDate;
+  final DateTime? initialEndDate;
   final void Function(DateTime, DateTime) onDateTimeRangeUpdated;
   final VoidCallback onDateTimeRangeRemoved;
 
@@ -25,6 +29,9 @@ class DateTimeRangeFilterChip extends StatelessWidget {
           context: context,
           firstDate: DateTime.now().subtract(const Duration(days: 20 * 365)),
           lastDate: DateTime.now(),
+          initialDateRange: initialStartDate != null && initialEndDate != null
+              ? DateTimeRange(start: initialStartDate!, end: initialEndDate!)
+              : null,
         ).then((DateTimeRange? range) {
           if (range != null) {
             onDateTimeRangeUpdated(range.start, range.end);
@@ -34,11 +41,22 @@ class DateTimeRangeFilterChip extends StatelessWidget {
         });
       },
       selected: filter != null,
-      label:
+      label: _label,
-          '''from ${_formatDateTime(filter?.startTime) ?? 'X'} to ${_formatDateTime(filter?.endTime) ?? 'Y'}''',
     );
   }
 
+  String get _label {
+    final DateTime? start = filter?.startTime;
+    final DateTime? end = filter?.endTime;
+    if (start == null && end == null) {
+      return '''from X to Y''';
+    } else if (start == end) {
+      return '''from ${_formatDateTime(start)}''';
+    } else {
+      return '''from ${_formatDateTime(start)} to ${_formatDateTime(end)}''';
+    }
+  }
+
   static String? _formatDateTime(DateTime? dateTime) {
     if (dateTime == null) return null;
 

lib/screens/search/widgets/date_time_shortcut_chip.dart

@@ -0,0 +1,89 @@
+import 'package:flutter/material.dart';
+import 'package:hacki/screens/search/widgets/date_time_range_filter_chip.dart';
+import 'package:hacki/screens/widgets/widgets.dart' show CustomChip;
+
+typedef Calculator = DateTime Function(DateTime);
+
+/// A set of chips that perform addition or subtraction on the date selected
+/// by [DateTimeRangeFilterChip]
+class DateTimeShortcutChip extends StatelessWidget {
+  const DateTimeShortcutChip({
+    required this.onDateTimeRangeUpdated,
+    required this.startDate,
+    required this.endDate,
+    required this.label,
+    required Calculator calculator,
+    super.key,
+  }) : _calculator = calculator;
+
+  DateTimeShortcutChip.dayBefore({
+    required this.onDateTimeRangeUpdated,
+    required this.startDate,
+    required this.endDate,
+    super.key,
+  })  : label = '- day',
+        _calculator =
+            ((DateTime date) => date.subtract(const Duration(hours: 24)));
+
+  DateTimeShortcutChip.dayAfter({
+    required this.onDateTimeRangeUpdated,
+    required this.startDate,
+    required this.endDate,
+    super.key,
+  })  : label = '+ day',
+        _calculator = ((DateTime date) => date.add(const Duration(hours: 24)));
+
+  DateTimeShortcutChip.weekBefore({
+    required this.onDateTimeRangeUpdated,
+    required this.startDate,
+    required this.endDate,
+    super.key,
+  })  : label = '- week',
+        _calculator =
+            ((DateTime date) => date.subtract(const Duration(days: 7)));
+
+  DateTimeShortcutChip.weekAfter({
+    required this.onDateTimeRangeUpdated,
+    required this.startDate,
+    required this.endDate,
+    super.key,
+  })  : label = '+ week',
+        _calculator = ((DateTime date) => date.add(const Duration(days: 7)));
+
+  DateTimeShortcutChip.monthBefore({
+    required this.onDateTimeRangeUpdated,
+    required this.startDate,
+    required this.endDate,
+    super.key,
+  })  : label = '- 30 days',
+        _calculator =
+            ((DateTime date) => date.subtract(const Duration(days: 30)));
+
+  DateTimeShortcutChip.monthAfter({
+    required this.onDateTimeRangeUpdated,
+    required this.startDate,
+    required this.endDate,
+    super.key,
+  })  : label = '+ 30 days',
+        _calculator = ((DateTime date) => date.add(const Duration(days: 30)));
+
+  final void Function(DateTime, DateTime) onDateTimeRangeUpdated;
+  final DateTime? startDate;
+  final DateTime? endDate;
+  final String label;
+  final Calculator _calculator;
+
+  @override
+  Widget build(BuildContext context) {
+    return CustomChip(
+      onSelected: (bool value) {
+        if (startDate == null || endDate == null) return;
+        final DateTime updatedStartDate = _calculator(startDate!);
+        final DateTime updatedEndDate = _calculator(endDate!);
+        onDateTimeRangeUpdated(updatedStartDate, updatedEndDate);
+      },
+      selected: false,
+      label: label,
+    );
+  }
+}

lib/screens/search/widgets/widgets.dart

@@ -1,3 +1,4 @@
 export 'custom_range_filter_chip.dart';
 export 'date_time_range_filter_chip.dart';
+export 'date_time_shortcut_chip.dart';
 export 'posted_by_filter_chip.dart';

lib/screens/widgets/comment_tile.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_slidable/flutter_slidable.dart';
 import 'package:hacki/blocs/blocs.dart';
+import 'package:hacki/config/constants.dart';
 import 'package:hacki/cubits/cubits.dart';
 import 'package:hacki/extensions/extensions.dart';
 import 'package:hacki/models/models.dart';
@@ -9,6 +10,7 @@ import 'package:hacki/screens/widgets/widgets.dart';
 import 'package:hacki/services/services.dart';
 import 'package:hacki/styles/styles.dart';
 import 'package:hacki/utils/utils.dart';
+import 'package:scrollable_positioned_list/scrollable_positioned_list.dart';
 
 class CommentTile extends StatelessWidget {
   const CommentTile({
@@ -23,6 +25,7 @@ class CommentTile extends StatelessWidget {
     this.actionable = true,
     this.level = 0,
     this.onTap,
+    this.itemScrollController,
   });
 
   final String? opUsername;
@@ -30,6 +33,7 @@ class CommentTile extends StatelessWidget {
   final int level;
   final bool actionable;
   final FetchMode fetchMode;
+  final ItemScrollController? itemScrollController;
 
   final void Function(Comment)? onReplyTapped;
   final void Function(Comment, Rect?)? onMoreTapped;
@@ -116,8 +120,7 @@ class CommentTile extends StatelessWidget {
                   child: InkWell(
                     onTap: () {
                       if (actionable) {
-                        HapticFeedbackUtil.selection();
+                        _collapse(context);
-                        context.read<CollapseCubit>().collapse();
                       } else {
                         onTap?.call();
                       }
@@ -140,6 +143,8 @@ class CommentTile extends StatelessWidget {
                                       ? orange
                                       : color,
                                 ),
+                                textScaleFactor:
+                                    MediaQuery.of(context).textScaleFactor,
                               ),
                               if (comment.by == opUsername)
                                 const Text(
@@ -154,12 +159,14 @@ class CommentTile extends StatelessWidget {
                                 style: const TextStyle(
                                   color: Palette.grey,
                                 ),
+                                textScaleFactor:
+                                    MediaQuery.of(context).textScaleFactor,
                               ),
                             ],
                           ),
                         ),
                         AnimatedSize(
-                          duration: const Duration(milliseconds: 200),
+                          duration: Durations.ms200,
                           child: Column(
                             crossAxisAlignment: CrossAxisAlignment.start,
                             children: <Widget>[
@@ -193,6 +200,8 @@ class CommentTile extends StatelessWidget {
                                       child: ItemText(
                                         key: ValueKey<int>(comment.id),
                                         item: comment,
+                                        textScaleFactor: MediaQuery.of(context)
+                                            .textScaleFactor,
                                         onTap: () {
                                           if (onTap == null) {
                                             _onTextTapped(context);
@@ -339,8 +348,27 @@ class CommentTile extends StatelessWidget {
 
   void _onTextTapped(BuildContext context) {
     if (context.read<PreferenceCubit>().state.tapAnywhereToCollapseEnabled) {
-      HapticFeedbackUtil.selection();
+      _collapse(context);
-      context.read<CollapseCubit>().collapse();
+    }
+  }
+
+  void _collapse(BuildContext context) {
+    HapticFeedbackUtil.selection();
+    context.read<CollapseCubit>().collapse();
+    if (context.read<CollapseCubit>().state.collapsed &&
+        context.read<PreferenceCubit>().state.autoScrollEnabled) {
+      Future<void>.delayed(
+        Durations.ms300,
+        () {
+          itemScrollController?.scrollTo(
+            index:
+                context.read<CommentsCubit>().state.comments.indexOf(comment) +
+                    1,
+            alignment: 0.1,
+            duration: Durations.ms300,
+          );
+        },
+      );
     }
   }
 }

lib/screens/widgets/custom_linkify/custom_linkify.dart

@@ -3,7 +3,7 @@ import 'package:flutter/material.dart';
 import 'package:hacki/screens/widgets/custom_linkify/linkifiers/linkifiers.dart';
 import 'package:hacki/styles/palette.dart';
 import 'package:hacki/utils/utils.dart';
-import 'package:linkify/linkify.dart';
+import 'package:linkify/linkify.dart' hide UrlLinkifier;
 
 export 'package:hacki/screens/widgets/custom_linkify/linkifiers/linkifiers.dart';
 export 'package:linkify/linkify.dart'
@@ -14,9 +14,7 @@ export 'package:linkify/linkify.dart'
         Linkifier,
         LinkifyElement,
         LinkifyOptions,
-        TextElement,
+        TextElement;
-        UrlElement,
-        UrlLinkifier;
 
 /// Callback clicked link
 typedef LinkCallback = void Function(LinkableElement link);

lib/screens/widgets/custom_linkify/linkifiers/linkifiers.dart

@@ -1,2 +1,3 @@
 export 'emphasis_linkifier.dart';
 export 'quote_linkifier.dart';
+export 'url_linkifier.dart';

lib/screens/widgets/custom_linkify/linkifiers/url_linkifier.dart

@@ -0,0 +1,121 @@
+import 'package:flutter/foundation.dart';
+import 'package:linkify/linkify.dart';
+
+final RegExp _urlRegex = RegExp(
+  r'^(.*?)((?:https?:\/\/|www\.)[^\s/$.?#].[\/\\\%:\?=&#@;A-Za-z0-9_.~-]*)',
+  caseSensitive: false,
+  dotAll: true,
+);
+
+final RegExp _looseUrlRegex = RegExp(
+  r'''^(.*?)((https?:\/\/)?(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,4}\b([-a-zA-Z0-9@:%_\+.~#?&//="'`]*))''',
+  caseSensitive: false,
+  dotAll: true,
+);
+
+final RegExp _protocolIdentifierRegex = RegExp(
+  r'^(https?:\/\/)',
+  caseSensitive: false,
+);
+
+class UrlLinkifier extends Linkifier {
+  const UrlLinkifier();
+
+  @override
+  List<LinkifyElement> parse(
+    List<LinkifyElement> elements,
+    LinkifyOptions options,
+  ) {
+    final List<LinkifyElement> list = <LinkifyElement>[];
+
+    for (final LinkifyElement element in elements) {
+      if (element is TextElement) {
+        final RegExpMatch? match = options.looseUrl
+            ? _looseUrlRegex.firstMatch(element.text)
+            : _urlRegex.firstMatch(element.text);
+
+        if (match == null) {
+          list.add(element);
+        } else {
+          final String text = element.text.replaceFirst(match.group(0)!, '');
+
+          if (match.group(1)?.isNotEmpty ?? false) {
+            list.add(TextElement(match.group(1)!));
+          }
+
+          if (match.group(2)?.isNotEmpty ?? false) {
+            String originalUrl = match.group(2)!;
+            String originText = originalUrl;
+            String? end;
+
+            if ((options.excludeLastPeriod) &&
+                originalUrl[originalUrl.length - 1] == '.') {
+              end = '.';
+              originText = originText.substring(0, originText.length - 1);
+              originalUrl = originalUrl.substring(0, originalUrl.length - 1);
+            }
+
+            String url = originalUrl;
+
+            if (!originalUrl.startsWith(_protocolIdentifierRegex)) {
+              originalUrl = (options.defaultToHttps ? 'https://' : 'http://') +
+                  originalUrl;
+            }
+
+            if ((options.humanize) || (options.removeWww)) {
+              if (options.humanize) {
+                url = url.replaceFirst(RegExp('https?://'), '');
+              }
+              if (options.removeWww) {
+                url = url.replaceFirst(RegExp(r'www\.'), '');
+              }
+
+              list.add(
+                UrlElement(
+                  originalUrl,
+                  url,
+                  originText,
+                ),
+              );
+            } else {
+              list.add(UrlElement(originalUrl, null, originText));
+            }
+
+            if (end != null) {
+              list.add(TextElement(end));
+            }
+          }
+
+          if (text.isNotEmpty) {
+            list.addAll(parse(<LinkifyElement>[TextElement(text)], options));
+          }
+        }
+      } else {
+        list.add(element);
+      }
+    }
+
+    return list;
+  }
+}
+
+/// Represents an element containing a link
+@immutable
+class UrlElement extends LinkableElement {
+  UrlElement(String url, [String? text, String? originText])
+      : super(text, url, originText);
+
+  @override
+  String toString() {
+    return "LinkElement: '$url' ($text)";
+  }
+
+  @override
+  bool operator ==(Object other) => equals(other);
+
+  @override
+  int get hashCode => Object.hash(text, originText, url);
+
+  @override
+  bool equals(dynamic other) => other is UrlElement && super.equals(other);
+}

lib/screens/widgets/custom_tab_bar.dart

@@ -66,7 +66,7 @@ class _CustomTabBarState extends State<CustomTabBar> {
                         currentIndex == i ? TextDimens.pt14 : TextDimens.pt10,
                     color: currentIndex == i ? Palette.orange : Palette.grey,
                   ),
-                  duration: const Duration(milliseconds: 200),
+                  duration: Durations.ms200,
                   child: Text(
                     state.tabs.elementAt(i).label,
                     key: ValueKey<String>(

lib/screens/widgets/device_gesture_wrapper.dart

@@ -17,7 +17,7 @@ class DeviceGestureWrapper extends StatelessWidget {
   Widget build(BuildContext context) {
     return MediaQuery(
       data: const MediaQueryData(
-        gestureSettings: DeviceGestureSettings(touchSlop: 7.9),
+        gestureSettings: DeviceGestureSettings(touchSlop: 12),
       ),
       child: child,
     );

lib/screens/widgets/item_text.dart

@@ -10,12 +10,14 @@ import 'package:hacki/utils/utils.dart';
 class ItemText extends StatelessWidget {
   const ItemText({
     required this.item,
+    required this.textScaleFactor,
     super.key,
     this.onTap,
   });
 
   final Item item;
   final VoidCallback? onTap;
+  final double textScaleFactor;
 
   @override
   Widget build(BuildContext context) {
@@ -37,7 +39,7 @@ class ItemText extends StatelessWidget {
           onOpen: (LinkableElement link) => LinkUtil.launch(link.url),
         ),
         onTap: onTap,
-        textScaleFactor: MediaQuery.of(context).textScaleFactor,
+        textScaleFactor: textScaleFactor,
         contextMenuBuilder: (
           BuildContext context,
           EditableTextState editableTextState,
@@ -52,7 +54,7 @@ class ItemText extends StatelessWidget {
     } else {
       return SelectableLinkify(
         text: item.text,
-        textScaleFactor: MediaQuery.of(context).textScaleFactor,
+        textScaleFactor: textScaleFactor,
         style: style,
         linkStyle: linkStyle,
         onOpen: (LinkableElement link) => LinkUtil.launch(link.url),

lib/screens/widgets/link_preview/link_preview.dart

@@ -233,7 +233,7 @@ class _LinkPreviewState extends State<LinkPreview> {
       secondChild: loadedWidget,
       crossFadeState:
           _loading ? CrossFadeState.showFirst : CrossFadeState.showSecond,
-      duration: const Duration(milliseconds: 500),
+      duration: Durations.ms500,
     );
   }
 }

lib/screens/widgets/link_preview/link_view.dart

@@ -237,7 +237,7 @@ class LinkView extends StatelessWidget {
                   crossAxisAlignment: CrossAxisAlignment.start,
                   children: <Widget>[
                     SizedBox(
-                      height: isUsingSerifFont! ? Dimens.pt2 : Dimens.pt4,
+                      height: isUsingSerifFont! ? Dimens.zero : Dimens.pt4,
                     ),
                     Text(
                       title,

lib/screens/widgets/onboarding_view.dart

@@ -15,7 +15,7 @@ class _OnboardingViewState extends State<OnboardingView> {
   final PageController pageController = PageController();
   final Throttle throttle = Throttle(delay: _throttleDelay);
 
-  static const Duration _throttleDelay = Duration(milliseconds: 100);
+  static const Duration _throttleDelay = Durations.ms100;
   static const double _screenshotHeight = 550;
 
   @override
@@ -80,7 +80,7 @@ class _OnboardingViewState extends State<OnboardingView> {
                 } else {
                   throttle.run(() {
                     pageController.nextPage(
-                      duration: const Duration(milliseconds: 600),
+                      duration: Durations.ms600,
                       curve: SpringCurve.underDamped,
                     );
                   });

lib/screens/widgets/tap_down_wrapper.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:hacki/config/constants.dart';
 
 class TapDownWrapper extends StatefulWidget {
   const TapDownWrapper({
@@ -22,7 +23,7 @@ class _TapDownWrapperState extends State<TapDownWrapper>
   @override
   void initState() {
     controller = AnimationController(
-      duration: const Duration(milliseconds: 100),
+      duration: Durations.ms100,
       vsync: this,
     );
 

lib/services/web_analyzer.dart

@@ -5,6 +5,7 @@ import 'dart:io';
 import 'package:collection/collection.dart' show IterableExtension;
 import 'package:fast_gbk/fast_gbk.dart';
 import 'package:flutter/foundation.dart';
+import 'package:hacki/config/constants.dart';
 import 'package:hacki/config/locator.dart';
 import 'package:hacki/extensions/extensions.dart';
 import 'package:hacki/models/models.dart';
@@ -321,7 +322,7 @@ class WebAnalyzer {
     final Uri uri = Uri.parse(url);
     final HttpClient ioClient = HttpClient()
       ..badCertificateCallback = _certificateCheck
-      ..connectionTimeout = const Duration(seconds: 2);
+      ..connectionTimeout = Durations.twoSeconds;
     final IOClient client = IOClient(ioClient);
     final BaseRequest request = Request('GET', uri)
       ..followRedirects = true
@@ -337,7 +338,7 @@ class WebAnalyzer {
 
     try {
       final IOStreamedResponse stream =
-          await client.send(request).timeout(const Duration(seconds: 10));
+          await client.send(request).timeout(Durations.tenSeconds);
 
       if (stream.statusCode == HttpStatus.movedTemporarily ||
           stream.statusCode == HttpStatus.movedPermanently) {

lib/styles/dimens.dart

@@ -33,6 +33,7 @@ abstract class TextDimens {
   static const double pt16 = 16;
   static const double pt17 = 17;
   static const double pt18 = 18;
+  static const double pt19 = 19;
   static const double pt20 = 20;
   static const double pt24 = 24;
   static const double pt26 = 26;

lib/utils/link_util.dart

@@ -2,7 +2,6 @@ import 'dart:io';
 
 import 'package:flutter/material.dart';
 import 'package:flutter_inappwebview/flutter_inappwebview.dart';
-import 'package:hacki/config/constants.dart';
 import 'package:hacki/config/locator.dart';
 import 'package:hacki/extensions/extensions.dart';
 import 'package:hacki/main.dart';
@@ -54,17 +53,7 @@ abstract class LinkUtil {
       return;
     }
 
-    Uri rinseLink(String link) {
+    final Uri uri = Uri.parse(link);
-      final RegExp regex = RegExp(RegExpConstants.linkSuffix);
-      if (!link.contains('en.wikipedia.org') && link.contains(regex)) {
-        final String match = regex.stringMatch(link) ?? '';
-        return Uri.parse(link.replaceAll(match, ''));
-      }
-
-      return Uri.parse(link);
-    }
-
-    final Uri uri = rinseLink(link);
     canLaunchUrl(uri).then((bool val) {
       if (val) {
         if (link.contains('http')) {

lib/utils/linkifier_util.dart

@@ -1,5 +1,5 @@
 import 'package:hacki/screens/widgets/custom_linkify/linkifiers/linkifiers.dart';
-import 'package:linkify/linkify.dart';
+import 'package:linkify/linkify.dart' hide UrlLinkifier;
 
 abstract class LinkifierUtil {
   static const LinkifyOptions linkifyOptions = LinkifyOptions(humanize: false);

lib/utils/theme_util.dart

@@ -1,61 +1,92 @@
 import 'dart:io';
 
 import 'package:adaptive_theme/adaptive_theme.dart';
-import 'package:device_info_plus/device_info_plus.dart';
 import 'package:flutter/services.dart';
 import 'package:hacki/styles/styles.dart';
 
 abstract class ThemeUtil {
-  /// Temp fix for the issue:
+  static Future<void> updateStatusBarSetting(
-  /// https://github.com/flutter/flutter/issues/119465
-  static Future<void> updateAndroidStatusBarSetting(
     Brightness brightness,
     AdaptiveThemeMode? mode,
   ) async {
-    if (Platform.isAndroid == false) return;
+    if (Platform.isAndroid) {
-
+      switch (mode) {
-    final DeviceInfoPlugin deviceInfoPlugin = DeviceInfoPlugin();
+        case AdaptiveThemeMode.light:
-    final AndroidDeviceInfo androidInfo = await deviceInfoPlugin.androidInfo;
+          SystemChrome.setSystemUIOverlayStyle(
-    final int sdk = androidInfo.version.sdkInt;
+            const SystemUiOverlayStyle(
-
+              statusBarBrightness: Brightness.dark,
-    if (sdk > 28) return;
+              statusBarIconBrightness: Brightness.dark,
-    switch (mode) {
+              statusBarColor: Palette.transparent,
-      case AdaptiveThemeMode.light:
+            ),
-        SystemChrome.setSystemUIOverlayStyle(
+          );
-          const SystemUiOverlayStyle(
+        case AdaptiveThemeMode.dark:
-            statusBarBrightness: Brightness.dark,
+          SystemChrome.setSystemUIOverlayStyle(
-            statusBarIconBrightness: Brightness.dark,
+            const SystemUiOverlayStyle(
-            statusBarColor: Palette.transparent,
+              statusBarBrightness: Brightness.light,
-          ),
+              statusBarIconBrightness: Brightness.light,
-        );
+              statusBarColor: Palette.transparent,
-      case AdaptiveThemeMode.dark:
+            ),
-        SystemChrome.setSystemUIOverlayStyle(
+          );
-          const SystemUiOverlayStyle(
+        case AdaptiveThemeMode.system:
-            statusBarBrightness: Brightness.light,
+        case null:
-            statusBarIconBrightness: Brightness.light,
+          switch (brightness) {
-            statusBarColor: Palette.transparent,
+            case Brightness.light:
-          ),
+              SystemChrome.setSystemUIOverlayStyle(
-        );
+                const SystemUiOverlayStyle(
-      case AdaptiveThemeMode.system:
+                  statusBarBrightness: Brightness.dark,
-      case null:
+                  statusBarIconBrightness: Brightness.dark,
-        switch (brightness) {
+                  statusBarColor: Palette.transparent,
-          case Brightness.light:
+                ),
-            SystemChrome.setSystemUIOverlayStyle(
+              );
-              const SystemUiOverlayStyle(
+            case Brightness.dark:
-                statusBarBrightness: Brightness.dark,
+              SystemChrome.setSystemUIOverlayStyle(
-                statusBarIconBrightness: Brightness.dark,
+                const SystemUiOverlayStyle(
-                statusBarColor: Palette.transparent,
+                  statusBarBrightness: Brightness.light,
-              ),
+                  statusBarIconBrightness: Brightness.light,
-            );
+                  statusBarColor: Palette.transparent,
-          case Brightness.dark:
+                ),
-            SystemChrome.setSystemUIOverlayStyle(
+              );
-              const SystemUiOverlayStyle(
+          }
-                statusBarBrightness: Brightness.light,
+      }
-                statusBarIconBrightness: Brightness.light,
+    } else {
-                statusBarColor: Palette.transparent,
+      switch (mode) {
-              ),
+        case AdaptiveThemeMode.light:
-            );
+          SystemChrome.setSystemUIOverlayStyle(
-        }
+            const SystemUiOverlayStyle(
+              statusBarBrightness: Brightness.light,
+              statusBarIconBrightness: Brightness.light,
+              statusBarColor: Palette.transparent,
+            ),
+          );
+        case AdaptiveThemeMode.dark:
+          SystemChrome.setSystemUIOverlayStyle(
+            const SystemUiOverlayStyle(
+              statusBarBrightness: Brightness.dark,
+              statusBarIconBrightness: Brightness.dark,
+              statusBarColor: Palette.transparent,
+            ),
+          );
+        case AdaptiveThemeMode.system:
+        case null:
+          switch (brightness) {
+            case Brightness.light:
+              SystemChrome.setSystemUIOverlayStyle(
+                const SystemUiOverlayStyle(
+                  statusBarBrightness: Brightness.light,
+                  statusBarIconBrightness: Brightness.light,
+                  statusBarColor: Palette.transparent,
+                ),
+              );
+            case Brightness.dark:
+              SystemChrome.setSystemUIOverlayStyle(
+                const SystemUiOverlayStyle(
+                  statusBarBrightness: Brightness.dark,
+                  statusBarIconBrightness: Brightness.dark,
+                  statusBarColor: Palette.transparent,
+                ),
+              );
+          }
+      }
     }
   }
 }

pubspec.lock

@@ -840,6 +840,30 @@ packages:
       url: "https://github.com/livinglist/flutter_pulltorefresh"
     source: git
     version: "2.0.0"
+  qr:
+    dependency: transitive
+    description:
+      name: qr
+      sha256: "64957a3930367bf97cc211a5af99551d630f2f4625e38af10edd6b19131b64b3"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.1"
+  qr_code_scanner:
+    dependency: "direct main"
+    description:
+      name: qr_code_scanner
+      sha256: f23b68d893505a424f0bd2e324ebea71ed88465d572d26bb8d2e78a4749591fd
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.1"
+  qr_flutter:
+    dependency: "direct main"
+    description:
+      name: qr_flutter
+      sha256: "5095f0fc6e3f71d08adef8feccc8cea4f12eec18a2e31c2e8d82cb6019f4b097"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.0"
   receive_sharing_intent:
     dependency: "direct main"
     description:
@@ -1390,4 +1414,4 @@ packages:
     version: "3.1.2"
 sdks:
   dart: ">=3.0.0 <4.0.0"
-  flutter: ">=3.10.1"
+  flutter: ">=3.10.6"

pubspec.yaml

@@ -1,11 +1,11 @@
 name: hacki
 description: A Hacker News reader.
-version: 1.6.0+110
+version: 1.8.2+118
 publish_to: none
 
 environment:
   sdk: ">=3.0.0 <4.0.0"
-  flutter: "3.10.1"
+  flutter: "3.10.6"
 
 dependencies:
   adaptive_theme: ^3.2.0
@@ -58,6 +58,8 @@ dependencies:
     git:
       url: https://github.com/livinglist/flutter_pulltorefresh
       ref: master
+  qr_code_scanner: ^1.0.1
+  qr_flutter: ^4.1.0
   receive_sharing_intent: ^1.4.5
   responsive_builder: ^0.7.0
   rxdart: ^0.27.7