[Webkit-unassigned] [Bug 47744] Absolute Signs (vertical bar) and Integral doesn't stack properly for stretched operators

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=47744





--- Comment #5 from Frédéric Wang <fred.wang at free.fr>  2013-07-19 01:52:22 PST ---
(In reply to comment #3)
> Created an attachment (id=139801)
 --> (https://bugs.webkit.org/attachment.cgi?id=139801&action=review) [details]
> Visual proof
> 
> I can reproduce the issue in EFL port (I'm assuming you would get similar results with GTK since we share fonts), see screenshot attached.
> 
> It is easily reproduced with the following tests:
>  - mathml/presentation/mo.xhtml
>  - mathml/presentation/row.xhtml

The gaps are also visible on the GTK ports too, except that the references are currently PNG images of the the bad output and so the tests pass (the EFL versions are skipped). I'm going to attach a reftest to verify that the extenders form perfect straight lines. 

(In reply to comment #4)
> This may be a STIX font problem?
> 
> There was actually a similar bug report filed against STIX 1.0 (for integral sign only):
> http://sourceforge.net/tracker/?func=detail&aid=3136520&group_id=328428&atid=1378225

I think it's just the way WebKit positions the glyphs that should be improved. Martin Robinson is working on a patch that fixes this problem on GTK and I guess EFL too, but it's not ready yet.

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