Bug 48951

Summary: MathML needs to work with vertical text.
Product: WebKit Reporter: Dave Hyatt <hyatt>
Component: Layout and RenderingAssignee: Dave Hyatt <hyatt>
Status: NEW ---    
Severity: Normal CC: alex, donggwan.kim, fred.wang, kojii, sausset
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: PC   
OS: OS X 10.5   
See Also: https://bugzilla.mozilla.org/show_bug.cgi?id=1077525
https://github.com/mathml-refresh/mathml/issues/18
Bug Depends on:    
Bug Blocks: 46123, 195797    

Description Dave Hyatt 2010-11-03 14:04:46 PDT
MathML needs to work with vertical text.
Comment 1 Alex Milowski 2011-04-25 13:42:19 PDT
What exactly does this mean?  Is it a left-to-right block containing mathematics in a vertical line?  I've asked some Japanese epub experts about this exact issue and was told they use left-to-right for mathematical texts.  I'd love to see a sample (scan of a page) of vertical writing with modern mathematical text embedded.
Comment 2 Koji Ishii 2011-12-21 09:58:54 PST
Basically, you should rotate clockwise by 90 degrees for vertical-* values. Please take a look at spec:
http://dev.w3.org/csswg/css3-writing-modes/#writing-mode
saying:
However replaced content involving text (such as MathML content or form elements) should match the replaced element's writing mode and line orientation if the UA supports such a vertical writing mode for the replaced content.

I have some scan samples collected at:
http://wiki.csswg.org/spec/utr50#math

Hope this helps.