Shaun Lippy wrote: > I am working on an application that requires knowledge of the precise > ranges of Unicode characters supported by a font, specifically a > TrueType font. This information is stored in the OS/2 table of the > TrueType font. Is there any way, through X, to get access to this > information? For our Windows product, I simply call GetFontData to > return me the OS/2 table, which I can then parse to get the required > information. It looks like the min_char_or_byte2 and max_char_or_byte2 > fields tell me the first and last character of a range, but what if I > have, for example, an Arabic font which has many characters in a "lower" > range (0x0600-0x06FF) and several in a much "higher" range (the Arabic > Presentation Forms, 0xFB50-0xFDFF); this font doesn't, of course, have > all the characters between 0x0600 and 0xFDFF, so the min and max fields > won't help. > > Thanks for any tips. In lieu of help from X, if such help doesn't > exist, can anybody suggest ideas for gaining access to the physical font > that X is using so that I can parse the font myself? That is, if I have > an XLFD returned from XListFonts, is there a call I can make to tell me > exactly where the font described by the XLFD exists on the system?
I believe this is the sort of thing fontconfig is designed to do (see http://www.fontconfig.org/ for details) - it's what most modern X GUI's use to find fonts that they then draw via libXft/pango/cairo/gtk/qt/etc. XLFD's and the old X font system have fallen out of use in most modern software, since it doesn't have all the features of the modern replacements, such as anti-aliased text support, or support for all the complex layout operations performed by libraries such as pango that are needed for some languages. -- -Alan Coopersmith- [email protected] Sun Microsystems, Inc. - X Window System Engineering _______________________________________________ xorg mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/xorg
