- From: (wrong string) äper <christoph.paeper@tu-clausthal.de>
- Date: Tue, 13 May 2003 04:01:55 +0200
- To: <www-style@w3.org>
In the description of 'font-size-adjust' in REC-CSS2 [1] there are given several example fonts with their corresponding values. I wondered how you find these values? E.g., Verdana is being said to have a value of 0.58 there. According to the TTF version of my copy, 2.43, the x-height is 1117, with 2048 units per em. 1117 / 2048 ~= 0.545 -- not 0.58. I've been told [2] that you find a similar value when measuring an printed out "x" (139mm@720pt; 139/254~=0.547). Any combination of other metrics (e.g. ascender - descender) to get a font height of around 1926 (1117/1926=0.58) failed, although caps-height - descender comes close (1117/(1489+423)=0.584), but only for Verdana. Verdana: 0.58 -- 1117 / 2048 ~= 0.545 Comic Sans MS: 0.54 -- 1105 / 2048 ~= 0.534 Trebuchet MS: 0.53 -- 1074 / 2048 ~= 0.524 Georgia: 0.50 -- 986 / 2048 ~= 0.481 Minion Web: 0.47 -- 906 / 2000 == 0.453 Times New Roman: 0.46 -- 916 / 2048 ~= 0.447 Gill Sans: 0.46 -- 920 / 2048 ~= 0.449 Are the values wrong, inaccurate, derived from different versions, or is the calculation method flawed? Btw.: AFAICS the example is being reused unchanged in the current CSS3 Fonts working draft. Christoph Päper (not that font-size-adjust was widely supported yet) [1] <http://www.w3.org/TR/CSS2/fonts.html#propdef-font-size-adjust> [2] <090520031943391755%nhtcapri@rrzn-user.uni-hannover.de>
Received on Monday, 12 May 2003 22:02:00 UTC