On Sun, 11 Jan 2009, Bruno Fassino wrote Hello Bruno,
>Your article is interesting, but I do not fully agree on your >conclusion that "browsers do not know the x-height". Badly phrased perhaps. I meant that it is not possible programmatically to directly read the x-height font metric. This page http://msdn.microsoft.com/en-us/library/ms534014(VS.85).aspx shows the parameters that can be read, by a call to the appropriate Operating System function, for an installed font. Note "otmsXHeight" which is the x-height and the comment further down "Not supported". It's immaterial whether the OS is just being awkward, or the x-height is not stored in the font file - if the OS can't _directly_ retrieve a value then neither can a browser. For a browser to get a value for x-height the only logical choices would be seem to be some sort of Look-Up-Table or rendering and measuring the character. >If you ask Gecko a box with width 1ex, it gets it >correctly, I'll have a closer look at the correspondence between ex box dimensions and results from my pixel counting program :-) I'll never quite understand why CSS spec writers put in a requirement that browser authors determine x-height and then, instead of leaving the programmers to implement the requirement, they tell them what the answers going to be - and get it wrong. -- Richard Mason http://www.emdpi.com ______________________________________________________________________ css-discuss [cs...@lists.css-discuss.org] http://www.css-discuss.org/mailman/listinfo/css-d List wiki/FAQ -- http://css-discuss.incutio.com/ List policies -- http://css-discuss.org/policies.html Supported by evolt.org -- http://www.evolt.org/help_support_evolt/
