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 height"). Please see the image Sphinx from Wikipedia to see what I mean. Also the image below may indicate better what I am after.

Sample enter image description here

I am not specifically looking for a pure XAML solution (probably impossible) so a C# code behind (a converter) is also fine.

This is the XAML used in XamlPad to produce the left A in the image above.

<TextBlock Text="A" Background="Aquamarine" FontSize="120" HorizontalAlignment="Center" VerticalAlignment="Center" />
c# wpf xaml
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