- From: Bert Bos <bert@w3.org>
- Date: Wed, 13 Oct 2010 19:50:46 +0200
- To: www-style@w3.org
On Tuesday 12 October 2010 00:14:57 Beth Dakin wrote: > Over in WebKit, we have been thinking a lot about the time delay we > have with @font-face when the font resource takes a long time to > download [1]. [...] > The spec addresses what to do in this case somewhat vaguely [4]. > Specifically, in Step 4 of the font matching algorithm, the spec > says: " Otherwise if the matched font is defined via @font-face and > needs to be downloaded, the user agent can either wait until the font > is downloaded or render once with substituted font metrics and render > again once the font is downloaded." In the 1998 version of @font-face, there was an optional 'width' descriptor to list the widths of relevant glyphs, so that the text could be laid out with a synthesized font (approximately, because it lacked ligatures and kerning) when the downloaded font took a while to download. That is probably where that mention of metrics comes from. > [1] https://bugs.webkit.org/show_bug.cgi?id=25207 > [2] https://bugzilla.mozilla.org/show_bug.cgi?id=499292 > [3] http://lists.w3.org/Archives/Public/www-style/2010Jul/0251.html > [4] http://www.w3.org/TR/css3-webfonts/#font-matching-algorithm -- Bert Bos ( W 3 C ) http://www.w3.org/ http://www.w3.org/people/bos W3C/ERCIM bert@w3.org 2004 Rt des Lucioles / BP 93 +33 (0)4 92 38 76 92 06902 Sophia Antipolis Cedex, France
Received on Wednesday, 13 October 2010 17:51:15 UTC