Re: [ft-devel] FT_HAS_KERNING

[Deron Kazmaier]

Hello,
> > A user just sent me to a collection of fonts (ADF_Fontspack -
> > Akandis Digital Foundry) that were not kerning.  I do my own kerning
> > processing, but I was using FT_HAS_KERNING to determine that there
> > was no need to look for kerning.
> >     
>
> To cite the docs:
>
>       FT_FACE_FLAG_KERNING ::
>         Indicates that the face contains kerning information.  If set,
>         the kerning distance can be retrieved through the function
>         @FT_Get_Kerning.  Otherwise the function always return the
>         vector (0,0).  Note that FreeType doesn't handle kerning data
>         from the `GPOS' table (as present in some OpenType fonts).
>
>
>   
> > Well, I took that check out and indeed these fonts have a
> > considerable number of GPOS kernings defined.
> >     
>
> Today's fonts almost exclusively contain kerning via the GPOS table.
>
>   

Indeed. Well, I must have gotten "lucky" that some fonts had other 
kerning that FT recognized ('kern'?)  but also had GPOS kerning because 
the GPOS code was written and tested with the FT_HAS_KERNING test enabled.

Well, I'm glad to have an answer. Sorry I missed it in the docs!

Thanks,

Deron