Re: Pango CoreText/ATSUI (was:Intricate changes to Quartz/OSX backend)

[John Ralls <jralls ceridwen us>]

On Oct 26, 2009, at 8:34 AM, Kristian Rietveld wrote:

> On Oct 26, 2009, at 4:23 PM, John Ralls wrote:
> > Oh, and unstable won't build without intervention on Tiger, because  
> > the latest Pango uses CoreText instead of ATSUI; CoreText wasn't  
> > supported before Leopard.
>
> They didn't really port the backend to CoreText.  It is still using  
> the ATSUI API and they changed two function calls.  I have an easy  
> patch that puts the old calls (which were removed) back and then it  
> builds and works fine on Tiger.  I will try to clean this patch up  
> and push it soon (and also test it on Leopard, which I was not able  
> to do before).
>
> The real challenge will be to write a proper, real, CoreText backend  
> for Pango.  I might tackle that in the future.

True, "switch" would have been a better term...

ISTM that a configure option and a macro that selects either the ATSUI  
or CoreText function is the way to go, so that Pango will build both  
for Tiger and x86_64.  Cairo needs the same treatment; right now they  
just skip the ATSUI functions when building in 64-bit.

Regards,
John Ralls