Re: [Render] OpenType support in Pango

[Werner LEMBERG <wl gnu org>]

> I just checked the beginnings of OpenType support for Pango into
> CVS.  This builds on top of the Pango Xrender/Xft code that I've
> been working recently and consists of:
> 
>  - The OpenType Layout (GPOS/GSUB/GDEF) code from FreeType 1 ported
>    to FreeType 2. (Quite a bit of work to port, but much, much
>    easier than writing the table-reading code myself.)

You've used the current snapshot, haven't you?  1.3.1 lacks most of
the GPOS code.

>  - A simple Arabic shaper (again using some code from the
>    FreeType 1 distro) that uses that shapes Arabic using
>    the glue layer.

Ditto...  IIRC, I've fixed some rules

> It's probably a day or so additional work to get positioning of
> accents working. A really sophisticated use of OpenType like the
> OpenType Indic spec would require considerably more work.

Have you checked ICU from IBM?  Maybe they've implemented the Unicode
algorithm already (this is what Microsoft also uses).  Porting this to
C shouldn't be too difficult.


    Werner