On Thu, May 31, 2012 at 8:19 PM, BlissSam <m13253@xxxxxxxxxxx> wrote: > I think a tool to generate these kind of rules is necessary. However, the table I listed in the previous message is necessary, too.Try to think, if Helvetica font is required but not installed, fonconfig will surely choose Arial or Liberation Sans to substitute.As the same, if a document requires STSong, will fontconfig choose SimSun to display that document?These fonts are basic fonts in CJK typography, so I think substitutions among these fonts are necessary. > Therefore, if Helvetica->Arial exists, STSong->SimSun exists too. Well, strictly speaking there are no alternatives fonts of Helvetica, Courier and Times for CJK fonts since those aren't designed for them. we just fall back to anything else only when requesting those fonts for glyphs in CJK. in your example, you may expect to modify 30-metric-aliases.conf, but for the above reason, I'm afraid I disgree with it. Aside from that, I suppose what you are linking to them is came from the generic family names as we sometimes try to find the fallback fonts out for them. e.g. Helvetica->sans-serif, Times->serif and Courier->monospace. I mean, that would be the same case with assigning the generic family names to fonts. so I would recommend to have the better rules with the font author or the distros. Honestly I would rather want to get rid of even them from fontconfig tree in the future. the classification can be guessed from the panose and the OS2 table. the last piece that is missing in this idea would be how to determine the order of the fonts though, it can be exported outside fontconfig as the preference. that should provides the minimal requirements. the problem on this idea is, there are no way to guess the classification for non OpenType/TrueType fonts. I have no idea when I can move on. but anyway. Anyway, IMHO sort of the order of the fonts should be outsourced to the desktop preference say. I guess it's not something maintained in fontconfig today. if we don't have sufficient facilities to do so, we should spend a time to implement it instead. that somewhat sounds constructive and productive. -- Akira TAGOH _______________________________________________ Fontconfig mailing list Fontconfig@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/fontconfig
