extension<T extends Object> method

T extension<T extends Object>()

Obtains a particular FScalableExtension, such as an app's additional text styles.

Creating and passing a FScalableExtension to FTypography

class AppTypography extends FScalableExtension<AppTypography> {
  final TextStyle code;

  const AppTypography({required this.code});

  @override
  AppTypography copyWith({TextStyle? code}) => AppTypography(code: code ?? this.code);

  @override
  AppTypography lerp(covariant AppTypography? other, double t) =>
      other == null ? this : AppTypography(code: TextStyle.lerp(code, other.code, t)!);

  @override
  AppTypography scale({double sizeScalar = 1.0}) =>
      AppTypography(code: code.copyWith(fontSize: (code.fontSize ?? 14) * sizeScalar));
}

final code = context.theme.typography.extension<AppTypography>().code;

Implementation

T extension<T extends Object>() => _extensions[T]! as T;