[HarfBuzz] patch to add getters for gr_font and gr_face

[Khaled Hosny]

On Sun, Dec 09, 2012 at 06:49:08PM -0500, Behdad Esfahbod wrote:
> On 12-12-09 04:34 AM, Khaled Hosny wrote:
> > On Sat, Dec 08, 2012 at 12:41:01AM +0700, Martin Hosken wrote:
> >> Dear Behdad,
> >>
> >> Khaled says he needs this for xetex. I enclose a patch to add getter
> >> functions to hb-graphite2 for gr_font and gr_face. No idea if the work
> >> though ;)
> > 
> > Thanks Martin, this seems to work for my need (hb-graphite2.h is missing
> > a graphite2/Font.h include, though), I was hoping it would return
> > Graphite face/font only if graphite2 shaper is actually used, but it is
> > not a big deal for XeTeX use case.
> 
> The way you are supposed to use the API for something like that is to create a
> shape_plan first, and use hb_shape_plan_get_shaper() and strcmp to "graphite2".
> 
> I pushed out the new API now.  Looks to me like it should indeed only return
> non-NULL in cases that graphite2 backend will be used by default, though I've
> not tested those.  The API is a bit different from what Martin provided.

It returns non-NULL if the font have Graphite tables even if only ot
shaper is requested with hn_shape_full(). I’ll check the shape_plan API.

Regards,
Khaled