[ft-devel] Correct way to calculate line gap/external leading

[Jjgod Jiang]

Hi,

I can't find in FreeType's docs on how to calculate the line gap,
currently we are using:

    FT_Size_Metrics metrics = face->size->metrics;
    leading = (metrics.height - metrics.ascender + metrics.descender) >> 64;

but sometimes I get -1 as the leading (Lucida Grande from Mac OS X, Ubuntu
fonts, Inconsolata, DejaVu Sans). Is it fine to have negative leading? or
is there anything wrong with my code? Thanks.

Attached my code to test.

- Jiang

main.c
Description: Text Data