Re: [Devel] AAT/TrueTypeGX supports in Mac

[Werner LEMBERG]

> In other hand I think GX/AAT code should provide service like(just
> an idea):
>
> - "text-layout-service"
> - FT_SERVICE_ID_TEXT_LAYOUT_SERVICE
> - FT_Service_TextLayoutService
>
> - methods are
> -- glyph substitution
> -- glyph position adjusting
> ...
>
> GX Layout and OT Layout may be the service instances.

An interesting idea.  Maybe only the most primitive OpenType/AAT
functions should be available as services; then a layout library on
top of FreeType could use them.

> One GX API design issue I'm facing is now how could I know whether a
> face supports layout or not. How do you think add
>
>   #define FT_FACE_FLAG_LAYOUT   ( 1L << 11 )
>
> to face_flags?

This is OK with me.


    Werner