internal TextCache(TextBoxView owner)
{
_lineProperties = owner.GetLineProperties();
_textRunCache = new TextRunCache();
Control hostControl = (Control)owner.Host;
TextFormattingMode textFormattingMode = TextOptions.GetTextFormattingMode(hostControl);
_textFormatter = System.Windows.Media.TextFormatting.TextFormatter.FromCurrentDispatcher(textFormattingMode);
}
