scale method
Implementation
ThemeData scale(BuildContext context) {
final double scale = context.responsiveData.scaleFactor;
if (scale == 1.0) return this;
final TextTheme scaledTextTheme = textTheme.apply(
fontSizeFactor: scale,
displayColor: textTheme.displayLarge?.color,
bodyColor: textTheme.bodyLarge?.color,
);
return copyWith(textTheme: scaledTextTheme);
}