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Detect standalone CFF fonts for FC_FONT_WRAPPER 

FreeType will return CFF for both SFNT fonts with CFF table as well as
standalone CFF fonts, but applications might want to support the former
and not the later, so now FC_FONT_WRAPPER makes the distinction more
clear.
This commit is contained in:
Khaled Hosny 2023-08-24 14:11:26 +03:00 committed by Khaled Hosny
parent 5d954398d1
commit e0eb855462
2 changed files with 16 additions and 4 deletions
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3
doc/fontconfig-user.sgml
View File

@ -149,7 +149,8 @@ order Int Order number of the font
desktop String Current desktop name
namedinstance Bool Whether font is a named instance
fontwarapper String The font wrapper format, current values are WOFF, WOFF2,
and SFNT for any other SFNT font.
SFNT for any other SFNT font, and CFF for standalone
CFF fonts.
</programlisting>
</refsect2>
<refsect2>

17
src/fcfreetype.c
View File

@ -2164,6 +2164,9 @@ FcFreeTypeQueryFaceInternal (const FT_Face face,
if (!FcPatternObjectAddBool (pat, FC_ANTIALIAS_OBJECT, FcFalse))
goto bail2;
}
FcChar8* wrapper = NULL;
#if HAVE_FT_GET_X11_FONT_FORMAT
/*
* Use the (not well documented or supported) X-specific function
@ -2172,18 +2175,25 @@ FcFreeTypeQueryFaceInternal (const FT_Face face,
{
const char *font_format = FT_Get_X11_Font_Format (face);
if (font_format)
{
if (!FcPatternObjectAddString (pat, FC_FONTFORMAT_OBJECT, (FcChar8 *) font_format))
goto bail2;
/* If this is not a SFNT font and format is CFF, then it is a standlone CFF font */
if (!FT_IS_SFNT (face) && !strcmp (font_format, "CFF"))
wrapper = (FcChar8*) "CFF";
}
}
#endif
if (!FcPatternObjectAddBool (pat, FC_NAMED_INSTANCE_OBJECT, !!(id > 0xffff)))
goto bail2;
if (face->face_flags & FT_FACE_FLAG_SFNT)
if (FT_IS_SFNT (face))
{
/* If this is an SFNT wrapper, try to sniff the SFNT tag which is the
* first 4 bytes, to see if it is a WOFF or WOFF2 wrapper. */
FcChar8* wrapper = (FcChar8*) "SFNT";
wrapper = (FcChar8*) "SFNT";
char buf[4];
int fd = FcOpen ((char *) file, O_RDONLY);
@ -2198,10 +2208,11 @@ FcFreeTypeQueryFaceInternal (const FT_Face face,
}
}
close (fd);
}
if (wrapper)
if (!FcPatternObjectAddString (pat, FC_FONT_WRAPPER_OBJECT, wrapper))
goto bail2;
}
/*
* Drop our reference to the charset