RESOLVED FIXED 156840
More improvements and explanations regarding resetting CSS properties on the <math> element 
https://bugs.webkit.org/show_bug.cgi?id=156840
Summary More improvements and explanations regarding resetting CSS properties on the ...
Frédéric Wang (:fredw)
Reported 2016-04-21 02:22:20 PDT
See bug comment 18. This will address: (In reply to comment #18) > 1) Indenting. Will be done here. > > 2) Continuing to use a different list on iOS than on every other platform ifdef will be removed. > 3) Removal of many of the font names that were already listed > 4) Is it really OK to set the font-family without taking font size into > consideration. > I don’t think the comment about the wish to have more built-in fonts on OS X > and iOS adds much here.> > Is the change in behavior on OS X really carefully considered? Seems that it > will now use "serif" and before would have used "Lucida Grande" or maybe > "Arial Unicode MS"? I already explained these in bug 133603 comment 19, but I'll update the comment in the CSS refer to http://trac.webkit.org/wiki/MathML/Fonts explaining why fonts are necessary, problems with obsolete fonts and importance of customization for consistent rendering (not just the font-size). > 5) Overriding the font-family but still inheriting the many other > font-related properties. I'll add a link to bug 156839. Additionally, I think I can use @font-face and Ahem to provide a pixel tests checking math font selection.
Attachments
WIP Patch (for EWS testing) (5.79 KB, patch)
2016-04-21 04:17 PDT, Frédéric Wang (:fredw) 		no flags
DetailsFormatted DiffDiff
Patch (8.00 KB, patch)
2016-04-21 05:07 PDT, Frédéric Wang (:fredw) 		darin: review+
DetailsFormatted DiffDiff
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.
Frédéric Wang (:fredw)
Comment 1 2016-04-21 04:17:34 PDT
Created attachment 276907 [details] WIP Patch (for EWS testing)
Frédéric Wang (:fredw)
Comment 2 2016-04-21 05:07:00 PDT
Created attachment 276910 [details] Patch
Darin Adler
Comment 3 2016-04-21 18:52:26 PDT
Comment on attachment 276910 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=276910&action=review Seems OK. It seems really peculiar to list fonts that are almost all available together. Given the discussion here there is clearly a call, longer term, for some clever system to choose which font to use based on which non-math font is being used in the surrounding content. > Source/WebCore/css/mathml.css:73 > + We put Cambria Math first since it is pre-installed on Windows 7 and higher. Not sure I understand the logic here. No reason I can think of to put more-often-installed fonts first.
Frédéric Wang (:fredw)
Comment 4 2016-04-21 22:48:54 PDT
(In reply to comment #3) > It seems really peculiar to list fonts that are almost all available > together. Given the discussion here there is clearly a call, longer term, > for some clever system to choose which font to use based on which non-math > font is being used in the surrounding content. Definitely. For now, the idea is to not miss any math font that can be installed on the system. > > Source/WebCore/css/mathml.css:73 > > + We put Cambria Math first since it is pre-installed on Windows 7 and higher. > > Not sure I understand the logic here. No reason I can think of to put > more-often-installed fonts first. As I said on bug 133603, this is a bit arbitrary... Maybe a better reason is because Cambria Math is pre-installed it has been more tested than the two others.
Frédéric Wang (:fredw)
Comment 5 2016-04-21 22:56:28 PDT
Committed r199869: <http://trac.webkit.org/changeset/199869>
Frédéric Wang (:fredw)
Comment 6 2016-04-24 07:34:33 PDT
(In reply to comment #3) > It seems really peculiar to list fonts that are almost all available > together. Given the discussion here there is clearly a call, longer term, > for some clever system to choose which font to use based on which non-math > font is being used in the surrounding content. For the record and future discussions, I've opened an issue in the MathML in HTML5 implementation note: https://github.com/MathML/MathMLinHTML5/issues/26 Ideally, I'd like CSS properties/keywords that could just be used in the default user agent stylesheet to tell the web engine to perform such clever trick. That way users won't be surprised by a non-CSS compatible behavior or can at least override that behavior if they don't like it.
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