initial commit

lib/theme/theme_manager.dart

@@ -0,0 +1,100 @@
+import 'dart:ui';
+
+import 'package:base_project/storage/storage_keys.dart';
+import 'package:base_project/storage/storage_service.dart';
+import 'package:base_project/theme/theme_data.dart';
+import 'package:base_project/theme/theme_schema.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/scheduler.dart';
+import 'package:flutter/services.dart';
+import 'package:provider/provider.dart';
+
+class ThemeManager extends ChangeNotifier {
+
+  late ThemeSchema theme;
+  late ThemeMode themeMode;
+
+  PlatformDispatcher dispatcher = SchedulerBinding.instance.platformDispatcher;
+
+  ThemeManager(){
+    init();
+  }
+
+  void init(){
+    themeMode = ThemeModeUtils.fromString(
+        StorageService.getValue( StorageServiceValueType.string, StorageKeys.theme) ?? ThemeMode.system.toRawString()
+    );
+    dispatcher.onPlatformBrightnessChanged = _onBrightnessChanged;
+    _setCurrentTheme();
+  }
+
+  void changeThemeMode( ThemeMode themeMode ){
+
+    StorageService.setValue(StorageServiceValueType.string, StorageKeys.theme, themeMode.toRawString());
+
+    this.themeMode = themeMode;
+    _setCurrentTheme();
+
+    notifyListeners();
+
+  }
+
+  void _onBrightnessChanged (){
+
+    if( themeMode != ThemeMode.system ) return;
+
+    if( dispatcher.platformBrightness == Brightness.light ){
+      theme = LightTheme();
+    }else{
+      theme = DarkTheme();
+    }
+
+    notifyListeners();
+
+  }
+
+  void _setCurrentTheme(){
+
+    if( themeMode == ThemeMode.system ){
+      theme = dispatcher.platformBrightness == Brightness.light ? LightTheme() : DarkTheme();
+    }else {
+      theme = themeMode == ThemeMode.light ? LightTheme() : DarkTheme();
+    }
+
+    SystemChrome.setSystemUIOverlayStyle(
+      SystemUiOverlayStyle(
+        statusBarColor: Colors.transparent,
+        statusBarIconBrightness: theme.brightness == Brightness.light ? Brightness.dark : Brightness.light
+      )
+    );
+
+  }
+
+  static ThemeSchema getTheme( BuildContext context, { bool listen = true } ){
+    return listen ? context.watch<ThemeManager>().theme : context.read<ThemeManager>().theme;
+  }
+
+}
+
+class ThemeModeUtils {
+
+  ThemeModeUtils._();
+
+  static ThemeMode fromString( String themeModeString ){
+    Map<String, ThemeMode> data = {
+      'light': ThemeMode.light,
+      'dark': ThemeMode.dark,
+      'system': ThemeMode.system
+    };
+    return data[themeModeString]!;
+  }
+
+}
+
+extension ThemeModeExtention on ThemeMode {
+
+  String toRawString(){
+    return toString().split('.').last;
+  }
+
+}