public Size MeasureText(VirtualCanvas parent, string label)
{
if (_parent != parent)
{
FontFamily fontFamily = (FontFamily)parent.GetValue(TextBlock.FontFamilyProperty);
FontStyle fontStyle = (FontStyle)parent.GetValue(TextBlock.FontStyleProperty);
FontWeight fontWeight = (FontWeight)parent.GetValue(TextBlock.FontWeightProperty);
FontStretch fontStretch = (FontStretch)parent.GetValue(TextBlock.FontStretchProperty);
_fontSize = (double)parent.GetValue(TextBlock.FontSizeProperty);
_typeface = new Typeface(fontFamily, fontStyle, fontWeight, fontStretch);
_parent = parent;
}
FormattedText ft = new FormattedText(label, CultureInfo.CurrentUICulture,
FlowDirection.LeftToRight, _typeface, _fontSize, Brushes.Black);
return(new Size(ft.Width, ft.Height));
}
