Bug 156841

Summary: [GTK] "-webkit-line-box-contain: glyphs replaced" sets height of arabic glyphs to zero
Product: WebKit Reporter: Frédéric Wang (:fredw) <fred.wang>
Component: TextAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: alex, bugs-noreply, mmaxfield
Priority: P2    
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
testcase none

Frédéric Wang (:fredw)
Reported 2016-04-21 02:59:15 PDT
Created attachment 276904 [details] testcase This was discussed in bug 153208. In the attached testcase: 1) green background is used for arabic and latin text. 2) red background is used for arabic and latin text, using "-webkit-line-box-contain: glyphs replaced" 3) blue background is used for arabic and latin text in a MathML <mi> element (which currently uses "-webkit-line-box-contain: glyphs replaced", see bug 151592) This works correctly for latin, but the background of Arabic text does not appear because the height of the calculated bounding box is incorrect. After bug 153208, MathML uses this exact bounding box for the layout and so Arabic text no longer appears. I was able to reproduce this problem on GTK but this works correctly on Mac, so I guess it is specific to the Linux graphics backend.
Attachments
testcase (538 bytes, text/html)
2016-04-21 02:59 PDT, Frédéric Wang (:fredw) 		no flags
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