Re: CoreText in pango for OSX 64-bit

[Martin Sevior <msevior gmail com>]

Congratulations Jerome,

This is a great news! With coretext support pango can be used on
iPhones and iPads :-)

Amongst other things, this will greatly help AbiWord's native OSX port.

Cheers,

Martin


On Sun, Mar 20, 2011 at 10:28 PM, Jerome Lambourg <lambourg adacore com> wrote:
> Hi list,
>
> I recently managed to make gtk+ working natively (e.g. without using X11) on my SL machine, many thanks to all that made this happening (and I know the pango team made a big effort for implementing the atsui module) !
>
> However, with this native gtk, I had big performance issues, and some analysis showed that the culprit was the use of ATSUI in pango (in particular ATSUDirectGetLayoutDataArrayPtrFromTextLayout seem to take ages to complete).
>
> I understand that supporting ATSUI is important for Tiger suppoirt, however this API is deprecated and is very, very slow (at least on my Snow Leopard, 64bit machine).
>
> I thus modified pango to switch to CoreText with a 64bit compiler, for which the necessary API should always be present.
>
> Attached is the patch of this modification, applied to pango-1.28.3.
>
> If another procedure is required to submit patches, please tell me so, I would be glad to follow this procedure.
>
> Regards,
> - Jerome
>
>
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