SashaKryzh

import 'package:flutter/material.dart';

extension BuildContextExtensions on BuildContext {
  ThemeData get theme => Theme.of(this);

  TextTheme get textTheme => theme.textTheme;

  ColorScheme get colorScheme => theme.colorScheme;

  DefaultTextStyle get defaultTextStyle => DefaultTextStyle.of(this);

SashaKryzh

/// `ThemeExtension` template for custom text styles.
///
/// If your goal is to only change the text color for light/dark mode, I don't see a big benefit from this extension.
/// For the default text style in the Text widget, you can set `textTheme.bodyMedium` in `ThemeData` (example: lib/app_theme.dart).
/// And to set text color for specific widgets, you can use `style: TextStyle(color: Theme.of(context).appColors.error)` or
/// `style: AppTypography.h1.copyWith(color: context.theme.appColors.error)`.
class AppTextThemeExtension extends ThemeExtension<AppTextThemeExtension> {
  const AppTextThemeExtension({
    required this.displayLarge,
    required this.displayMedium,

SashaKryzh

import 'package:flutter/material.dart';

/// `ThemeExtension` template for custom colors.
///
/// For example purposes, it has all required fields from the default Material `ColorScheme`.
/// But you can add, rename and delete any fields your need.
///
/// ### Motivation
///
/// At the beginning, you may not know if your colors will fit into the Material `ColorScheme`,

SashaKryzh

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';

class MeasureSizeRenderObject extends RenderProxyBox {
  MeasureSizeRenderObject(this.onChanged);

  Size? oldSize;
  final ValueChanged<Size> onChanged;

  @override