Re: [Indic-computing-devel] Which open-source renderers actually use OT GSUB and GPOS information?

[Keyur S. <key...@ya...>]

--- Joseph Koshy <a_j...@ya...> wrote:
> Which open-source rendering libraries actually use OpenType's GSUB 
> and GPOS tables to do glyph rendering?
> 
> The released FreeType library API (v2.1.4) doesn't seem to 
> support this, nor does it expose any way for an application to get at 
> this information.

GSUB/GPOS handling code was present in FreeType1. Then FreeType gurus
removed that support from FreeType2 and planned to provide higher level
rendering libraries for opentype fonts. A project was started more than two
years ago (http://cvs.freetype.org/cgi-bin/viewcvs.cgi/ftlayout/). But I
think they have stopped working on it for some unknown reason.

> 
> Has anyone on this list know of a rendering toolkit that is:
> 
>   (a) open-source
>   and
>   (b) support OpenTypes GPOS and GSUB tables?

While ICU is a very good library to look into, you may also want to look at
the code of yudit which now also supports GPOS in addition to GSUB. We, at
C-DAC Mumbai, are also planning to write an open source library specially
for OpenType Indic support.

- Keyur


__________________________________
Do you Yahoo!?
Yahoo! Calendar - Free online calendar with sync to Outlook(TM).
http://calendar.yahoo.com