Made timetable zoom persistent

lib/storage/base/settings.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:json_annotation/json_annotation.dart';
 
 import '../gradeAverages/gradeAveragesSettings.dart';
+import '../timetable/timetableSettings.dart';
 
 part 'settings.g.dart';
 
@@ -15,11 +16,13 @@ class Settings {
   bool devToolsEnabled;
 
   GradeAveragesSettings gradeAveragesSettings;
+  TimetableSettings timetableSettings;
 
   Settings({
     required this.appTheme,
     required this.devToolsEnabled,
-    required this.gradeAveragesSettings
+    required this.gradeAveragesSettings,
+    required this.timetableSettings
   });
 
   static String _themeToJson(ThemeMode m) => m.name;

lib/storage/base/settings.g.dart

@@ -11,10 +11,13 @@ Settings _$SettingsFromJson(Map<String, dynamic> json) => Settings(
       devToolsEnabled: json['devToolsEnabled'] as bool,
       gradeAveragesSettings: GradeAveragesSettings.fromJson(
           json['gradeAveragesSettings'] as Map<String, dynamic>),
+      timetableSettings: TimetableSettings.fromJson(
+          json['timetableSettings'] as Map<String, dynamic>),
     );
 
 Map<String, dynamic> _$SettingsToJson(Settings instance) => <String, dynamic>{
       'appTheme': Settings._themeToJson(instance.appTheme),
       'devToolsEnabled': instance.devToolsEnabled,
       'gradeAveragesSettings': instance.gradeAveragesSettings.toJson(),
+      'timetableSettings': instance.timetableSettings.toJson(),
     };

lib/storage/base/settingsProvider.dart

@@ -2,6 +2,7 @@ import 'dart:convert';
 import 'dart:developer';
 import 'package:flutter/material.dart';
 import 'package:marianum_mobile/storage/gradeAverages/gradeAveragesSettings.dart';
+import 'package:marianum_mobile/storage/timetable/timetableSettings.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 import 'settings.dart';
@@ -49,6 +50,9 @@ class SettingsProvider extends ChangeNotifier {
         useGradeSystem: true,
         inputs: []
       ),
+      timetableSettings: TimetableSettings(
+        zoom: 40,
+      ),
     );
   }
 }

lib/storage/timetable/timetableSettings.dart

@@ -0,0 +1,13 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'timetableSettings.g.dart';
+
+@JsonSerializable()
+class TimetableSettings {
+  double zoom;
+
+  TimetableSettings({required this.zoom});
+
+  factory TimetableSettings.fromJson(Map<String, dynamic> json) => _$TimetableSettingsFromJson(json);
+  Map<String, dynamic> toJson() => _$TimetableSettingsToJson(this);
+}

lib/storage/timetable/timetableSettings.g.dart

@@ -0,0 +1,17 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'timetableSettings.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+TimetableSettings _$TimetableSettingsFromJson(Map<String, dynamic> json) =>
+    TimetableSettings(
+      zoom: (json['zoom'] as num).toDouble(),
+    );
+
+Map<String, dynamic> _$TimetableSettingsToJson(TimetableSettings instance) =>
+    <String, dynamic>{
+      'zoom': instance.zoom,
+    };

lib/view/pages/timetable/timetable.dart

@@ -2,6 +2,7 @@
 import 'dart:developer';
 
 import 'package:flutter/material.dart';
+import 'package:marianum_mobile/storage/base/settingsProvider.dart';
 import 'package:provider/provider.dart';
 import 'package:syncfusion_flutter_calendar/calendar.dart';
 
@@ -28,8 +29,13 @@ class _TimetableState extends State<Timetable> {
   double elementScale = 40;
   double baseElementScale = 40;
 
+  late final SettingsProvider settings;
+
   @override
   void initState() {
+    settings = Provider.of<SettingsProvider>(context, listen: false);
+    elementScale = baseElementScale = settings.val().timetableSettings.zoom;
+
     WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
       Provider.of<TimetableProps>(context, listen: false).run();
     });
@@ -75,7 +81,7 @@ class _TimetableState extends State<Timetable> {
               });
             },
             onScaleEnd: (details) {
-              // TODO save scale for later
+              settings.val(write: true).timetableSettings.zoom = elementScale;
             },
 
             child: SfCalendar(