Re: [ft-devel] dfont and TrueType collections

[Behdad Esfahbod]

On 04/09/2009 07:37 PM, address@hidden wrote:
> Hi,
>
> On Thu, 09 Apr 2009 13:34:23 -0400
> Behdad Esfahbod<address@hidden>  wrote:
> > I had to fix a bug [1] in Pango and fontconfig where the ftglue-derived code
> > was checking "face->num_faces>  1" to detect TrueType Collections.  This fails
> > with Apple dfont's where num_faces is the number of faces in different streams
> > of the dfont and does not mean the current face is a TTC.
> >
> > Is this intentional or a bug in FreeType?
>
> It was intentional. The feature counting the faces in Apple
> Suitcase font format as if it were TTC had ever been
> implemented for MacOS, proposed by Paul Mirror:

Understood.

> 2001-10-26  Leonard Rosenthol<address@hidden>
>
>          * builds/mac/README: Updated to reflect my taking over the project
>          and that is now being actively maintained.
>
>          * src/base/ftmac.c (parse_fond): Applied patches from Paul Miller
>          <address@hidden>  to support loading a face other than the
>          first from a FOND resource.
>          (FT_New_Face_From_FOND): Updated.
>
> But I sympathize with your dissatisfaction that FT2 provides
> no API to distinguish TTC and FOND. Although you already fixed
> Pango (and fontconfig?) to distinguish by checking the internal
> of the font file (I'm sorry!), do you need any functionalities
> in FT2?

No, it's perfectly fine, as we were doing our own table lookup anyway.  It's 
just that the ftglue code was making a wrong assumption.  The patch was barely 
ten lines.

behdad

> Regards,
> mpsuzuki