numberToFontSize function

FontSize numberToFontSize(String num)

Implementation

FontSize numberToFontSize(String num) {
  switch (num) {
    case "1":
      return FontSize.xxSmall;
    case "2":
      return FontSize.xSmall;
    case "3":
      return FontSize.small;
    case "4":
      return FontSize.medium;
    case "5":
      return FontSize.large;
    case "6":
      return FontSize.xLarge;
    case "7":
      return FontSize.xxLarge;
  }
  if (num.startsWith("+")) {
    final relativeNum = double.tryParse(num.substring(1)) ?? 0;
    return numberToFontSize((3 + relativeNum).toString());
  }
  if (num.startsWith("-")) {
    final relativeNum = double.tryParse(num.substring(1)) ?? 0;
    return numberToFontSize((3 - relativeNum).toString());
  }
  return FontSize.medium;
}