- From: John Daggett <jdaggett@mozilla.com>
- Date: Tue, 6 Mar 2012 17:12:55 -0800 (PST)
- To: John Hudson <tiro@tiro.com>
- Cc: W3C www-style mailing list <www-style@w3.org>
John Hudson wrote: > > No, fallback fonts are sized differently depending upon the ratio of > > their x-height to em size, as specified in the description of the > > font-size-adjust property. The size is determined by a combination > > of 'font-size' and 'font-size-adjust'. The reason for keeping > > x-height constant is less about being "visually more appealing" than > > it is about readability at small sizes, where the x-height is a > > determining factor. > > Thinking about this, and about the other font-size-adjust thread, I'm > struck that as currently spec'd it is a peculiarly Latin-centric -- > or, at least, Euro-centric -- feature, which may be because it relies > on similarly Latin-centric font metrics (the sxHeight field in the > OS/2 table). > > I can think of parallel situations in which, again for both aestheric > and readability reasons, one might want to, say, adjust the size of > fallback Hindi fonts to match the head line height of the preferred > font, or match some aspect of differing Arabic fonts (the latter > mighty be particularly welcome, given how widely divergent the scaling > of Arabic fonts can be). I agree that this functionality would be useful but I don't think it negates the utility of font-size-adjust. Others have pointed this out before (Behdad [1] and Peter Constable [2]). I think that coming up some form of per-script sizing factor is a reasonable addition but I think we should consider it for CSS4 Fonts, rather than at this level. JH [1] http://lists.w3.org/Archives/Public/www-style/2010Aug/0197.html [2] http://lists.w3.org/Archives/Public/www-style/2011May/0049.html
Received on Wednesday, 7 March 2012 01:13:23 UTC