Init repo

lib/providers/settings/book_viewer_settings_provider.dart

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+import 'dart:convert';
+
+import 'package:collection/collection.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:screen_brightness/screen_brightness.dart';
+
+import 'package:fladder/providers/shared_provider.dart';
+import 'package:fladder/util/debouncer.dart';
+
+enum ReadDirection {
+  leftToRight,
+  rightToLeft;
+
+  String toMap() => name;
+  static ReadDirection fromMap(String? map) {
+    return ReadDirection.values.firstWhereOrNull((element) => element.name == map) ?? ReadDirection.leftToRight;
+  }
+}
+
+enum InitZoomState {
+  contained,
+  covered;
+
+  String toMap() => name;
+
+  static InitZoomState fromMap(String? map) {
+    return InitZoomState.values.firstWhereOrNull((element) => element.name == map) ?? InitZoomState.contained;
+  }
+}
+
+enum GestureCache {
+  contained,
+  covered;
+
+  String toMap() => name;
+
+  static InitZoomState fromMap(String? map) {
+    return InitZoomState.values.firstWhereOrNull((element) => element.name == map) ?? InitZoomState.contained;
+  }
+}
+
+class BookViewerSettingsModel {
+  final double? screenBrightness;
+  final ReadDirection readDirection;
+  final InitZoomState initZoomState;
+  final bool cachePageZoom;
+  final bool keepPageZoom;
+  final bool disableScrollOnZoom;
+
+  BookViewerSettingsModel({
+    this.screenBrightness,
+    this.readDirection = ReadDirection.leftToRight,
+    this.initZoomState = InitZoomState.contained,
+    this.cachePageZoom = false,
+    this.keepPageZoom = true,
+    this.disableScrollOnZoom = false,
+  });
+
+  BookViewerSettingsModel copyWith({
+    ValueGetter<double?>? screenBrightness,
+    ReadDirection? readDirection,
+    InitZoomState? initZoomState,
+    bool? cachePageZoom,
+    bool? keepPageZoom,
+    bool? disableScrollOnZoom,
+  }) {
+    return BookViewerSettingsModel(
+      screenBrightness: screenBrightness != null ? screenBrightness.call() : this.screenBrightness,
+      readDirection: readDirection ?? this.readDirection,
+      initZoomState: initZoomState ?? this.initZoomState,
+      cachePageZoom: cachePageZoom ?? this.cachePageZoom,
+      keepPageZoom: keepPageZoom ?? this.keepPageZoom,
+      disableScrollOnZoom: disableScrollOnZoom ?? this.disableScrollOnZoom,
+    );
+  }
+
+  Map<String, dynamic> toMap() {
+    return {
+      'screenBrightness': screenBrightness,
+      'readDirection': readDirection.toMap(),
+      'initZoomState': initZoomState.toMap(),
+      'cachePageZoom': cachePageZoom,
+      'keepPageZoom': keepPageZoom,
+      'disableScrollOnZoom': disableScrollOnZoom,
+    };
+  }
+
+  factory BookViewerSettingsModel.fromMap(Map<String, dynamic> map) {
+    return BookViewerSettingsModel(
+      screenBrightness: map['screenBrightness']?.toDouble(),
+      readDirection: ReadDirection.fromMap(map['readDirection']),
+      initZoomState: InitZoomState.fromMap(map['initZoomState']),
+      cachePageZoom: map['cachePageZoom'] ?? false,
+      keepPageZoom: map['keepPageZoom'] ?? true,
+      disableScrollOnZoom: map['disableScrollOnZoom'] ?? false,
+    );
+  }
+
+  String toJson() => json.encode(toMap());
+
+  factory BookViewerSettingsModel.fromJson(String source) => BookViewerSettingsModel.fromMap(json.decode(source));
+}
+
+final bookViewerSettingsProvider = StateNotifierProvider<BookViewerSettingsNotifier, BookViewerSettingsModel>((ref) {
+  return BookViewerSettingsNotifier(ref);
+});
+
+class BookViewerSettingsNotifier extends StateNotifier<BookViewerSettingsModel> {
+  BookViewerSettingsNotifier(this.ref) : super(BookViewerSettingsModel());
+
+  final Ref ref;
+
+  final Debouncer _debouncer = Debouncer(const Duration(seconds: 1));
+
+  @override
+  set state(BookViewerSettingsModel value) {
+    _debouncer.run(() => ref.read(sharedUtilityProvider).bookViewSettings = value);
+    super.state = value;
+  }
+
+  void setScreenBrightness(double? value) async {
+    state = state.copyWith(
+      screenBrightness: () => value,
+    );
+    if (state.screenBrightness != null) {
+      ScreenBrightness().setScreenBrightness(state.screenBrightness!);
+    } else {
+      ScreenBrightness().resetScreenBrightness();
+    }
+  }
+
+  setSavedBrightness() {
+    if (state.screenBrightness != null) {
+      ScreenBrightness().setScreenBrightness(state.screenBrightness!);
+    }
+  }
+
+  void update(BookViewerSettingsModel Function(BookViewerSettingsModel state) outgoing) => state = outgoing(state);
+}