first commit

lib/components/extensions/context.dart

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+// Flutter imports:
+import 'package:flutter/widgets.dart';
+
+/// Подключение сторонней библиотеки
+/// Сделано для упрощения чтения импортов
+export 'package:flutter_screenutil/flutter_screenutil.dart';
+
+///
+/// Маштабирование в зависимости от контекста
+///
+extension ScaleFromContext on BuildContext {
+  ///
+  /// Screen Width
+  ///
+  double get sw => MediaQuery.of(this).size.width;
+
+  ///
+  /// Screen Height
+  ///
+  double get sh => MediaQuery.of(this).size.height;
+}

lib/components/extensions/duration_extensions.dart

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+///
+/// Расширение для работы с [Duration]
+///
+extension AppDuration on Duration {
+  ///
+  /// Получение длительности в формате mm:ss
+  ///
+  String get mmss => hhmmss.substring('00:'.length);
+
+  ///
+  /// Получение длительности в формате HH:mm:ss
+  ///
+  String get hhmmss {
+    String twoDigits(int n) => n.toString().padLeft(2, '0');
+
+    String twoDigitMinutes = twoDigits(inMinutes.remainder(60));
+    String twoDigitSeconds = twoDigits(inSeconds.remainder(60));
+
+    return '${twoDigits(inHours)}:$twoDigitMinutes:$twoDigitSeconds';
+  }
+}

lib/components/extensions/state.dart

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+// Dart imports:
+import 'dart:async';
+
+// Flutter imports:
+import 'package:flutter/material.dart';
+
+extension StateExtension on State {
+  /// [setState] when it's not building, then wait until next frame built.
+  FutureOr<void> safeSetState(FutureOr<dynamic> Function() fn) async {
+    await fn();
+    if (mounted &&
+        !context.debugDoingBuild &&
+        context.owner?.debugBuilding == false) {
+      // ignore: invalid_use_of_protected_member, no-empty-block
+      setState(() {});
+    }
+
+    final Completer<void> completer = Completer<void>();
+
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      completer.complete();
+    });
+
+    return completer.future;
+  }
+}

lib/components/extensions/string.dart

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+// Flutter imports:
+import 'package:flutter/material.dart' show Color;
+
+///
+/// Расширение для работы со строками
+///
+extension MString on String {
+  ///
+  /// Слово с заглавной буквы
+  ///
+  String capitalyze() {
+    final String str = toLowerCase();
+    final String first = str.substring(0, 1);
+
+    return '${first.toUpperCase()}${str.substring(1)}';
+  }
+
+  ///
+  /// Парсинг hex string в color
+  ///
+  Color get toColor {
+    String res = replaceFirst('#', '');
+
+    return Color(
+      int.parse(
+        res.length == 8 ? res : (res.length == 6 ? 'FF$res' : res),
+        radix: 16,
+      ),
+    );
+  }
+}

lib/components/extensions/theme_mode.dart

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+// Flutter imports:
+import 'package:flutter/material.dart' show ThemeMode;
+
+/// Расширение [ThemeMode]
+extension ThemModeExtension on ThemeMode {
+  ///
+  /// Получение инверсивного [ThemeMode]
+  ///
+  ThemeMode get inversed {
+    switch (this) {
+      case ThemeMode.system:
+        return ThemeMode.light;
+
+      case ThemeMode.light:
+        return ThemeMode.dark;
+
+      case ThemeMode.dark:
+        return ThemeMode.light;
+    }
+  }
+}