public DecoratedCharacter(EquationContainer parent, TextEquation previous, CharacterDecorationType cdt, Position position, string sign)
: base(parent)
{
this.Previous = previous;
this.charFt = textManager.GetFormattedText(previous.Text[previous.CaretIndex - 1].ToString(), previous.GetFormats()[previous.CaretIndex - 1]);
previous.ConsumeKey(System.Windows.Input.Key.Back);
Height = FontSize;
decorations.Add(new CharacterDecorationInfo()
{
DecorationType = cdt, Position = position, UnicodeString = sign
});
Width = charFt.Width;
}
