TextBlock as big as a capital letter (ignoring font ascender/descender)

Question

I am looking to get a specific behavior on TextBlock so that its height only includes the height of the capital letters (from baseline to top minus \"ascender h

Answer 1

u can try to use attribute LineStackingStrategy="BlockLineHeight" and a Converter on the LineHeight attributes and a converter on the Height of TextBlock. This a sample code of converters

// Height Converter
public class FontSizeToHeightConverter : IValueConverter
{
    public static double COEFF = 0.715;
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        return (double)value * COEFF;
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}
// LineHeightConverter
public class FontSizeToLineHeightConverter : IValueConverter
{
    public static double COEFF = 0.875;
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        return double.Parse(value.ToString()) * COEFF;
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

The Coefficient used on converters depends on Used Family Fonts (Baseline and LineSpacing):

The best solution is to find how to calculate the Coeff based on parameters Baseline and LineSpacing of the FontFamily. In this sample (Segeo UI) the Coeff of Height = 0.715 and LineHeight = 0,875 * FontSize.