> I've been working with freetype recently and tried using the metrics
> on the font face to get information about underline position and
> thickness. Using those I've run into an odd issue. No matter how
> big the font, the thickness and position is always the same.
Are you talking about the fields `underline_position' and
`underline_thickness' in `FT_Face'? The documentation clearly states
that those values are in *font units*. This means that you have to
scale them manually to the desired size (in pixels).
> I've also noticed that there is no fixed underline position in the
> metrics. Reusing the underline thickness for strikethrough should
> be fine, but I'm not aware of any method to get strikethrough
> position. Is there a standardized way to calculate strikethrough
> position?
Only TTFs and OTFs offer this value in the `OS/2' table, cf. fields
`yStrikeoutSize' and `yStrikeoutPosition' in struct `TT_OS2'. Again,
you have to manually scale those values to the desired font size. For
other font formats you have to compute those values by yourself.
Werner
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