Currently, Xft doesn't use the 'generic' filed of FT_Face,
which is a user_data/finalizer pair for the client to
attach data to the font.
A) Would you consider it safe to assume that it won't use
in the future, so that a Xft client could use it?
B) If not, could we have a fontconfig API addition that
allows for a similar effect?
Background:
When Pango needs OpenType information for a file on disk,
it gets it by parsing additional tables from the OpenType
file. The information is independent of size, so should
be cached along with the FT_Face.
For Xft1, I handled this by:
PangoXftFont ---> XftFont ------> FT_Face
\ /
`--> PangoOTInfo
But with Xft2, the XftFont => FT_Face association is not
fixed, so this set up no longer works, and I'd like to switch
it over to:
PangoXftFont --> XftFont --> FT_Face
\
`--> PangoOTInfo
For, this, I need, at a minimum, notification when Xft calls
FT_Done_Face.
Regards,
Owen
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