BudgetApp/lib/theme/custom_colors.dart

import 'package:flutter/material.dart';

// Расширение темы для добавления пользовательских цветов.
@immutable
class CustomColors extends ThemeExtension<CustomColors> {
  const CustomColors({
    required this.income,
    required this.expense,
    this.divider, // Добавлен цвет для разделителей
    this.accent, // Добавлен цвет для акцентов
    this.unselectedIcon, // Цвет для невыбранных иконок
  });

  final Color? income;
  final Color? expense;
  final Color? divider;
  final Color? accent;
  final Color? unselectedIcon; // Цвет для невыбранных иконок

  @override
  CustomColors copyWith({
    Color? income,
    Color? expense,
    Color? divider,
    Color? accent,
    Color? unselectedIcon,
  }) {
    return CustomColors(
      income: income ?? this.income,
      expense: expense ?? this.expense,
      divider: divider ?? this.divider,
      accent: accent ?? this.accent,
      unselectedIcon: unselectedIcon ?? this.unselectedIcon,
    );
  }

  @override
  CustomColors lerp(ThemeExtension<CustomColors>? other, double t) {
    if (other is! CustomColors) {
      return this;
    }
    return CustomColors(
      income: Color.lerp(income, other.income, t),
      expense: Color.lerp(expense, other.expense, t),
      divider: Color.lerp(divider, other.divider, t),
      accent: Color.lerp(accent, other.accent, t),
      unselectedIcon: Color.lerp(unselectedIcon, other.unselectedIcon, t),
    );
  }
}