Bug 15204

Summary: Clipped content incorrectly included when calculating object widths.
Product: WebKit Reporter: Richard Connamacher <richardconnamacher>
Component: CSSAssignee: Nobody <webkit-unassigned>
Status: RESOLVED CONFIGURATION CHANGED    
Severity: Normal CC: bfulgham
Priority: P2 Keywords: HasReduction
Version: 523.x (Safari 3)   
Hardware: Mac   
OS: OS X 10.4   
URL: http://www.steelers.com/
Attachments:
Description Flags
Test case none

Richard Connamacher
Reported 2007-09-13 12:44:22 PDT
WebKit improperly includes content hidden via the CSS clip property when calculating object and page widths. This causes strange scrollbar behavior on pages that use this to create a scrolling marquee, such as www.steelers.com. Content hidden using overflow: hidden is handled properly. An isolated test case has been included, demonstrating both the incorrect behavior using clip: rect() and the correct behavior using overflow: hidden.
Attachments
Test case (1.94 KB, text/html)
2007-09-13 12:46 PDT, Richard Connamacher 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Richard Connamacher
Comment 1 2007-09-13 12:46:00 PDT
Created attachment 16281 [details] Test case Test case showing the proper behavior with overflow: hidden and buggy version with clip: rect()
Dave Hyatt
Comment 2 2007-09-13 13:14:08 PDT
Confirmed. Firefox has the same bug. :)
David Kilzer (:ddkilzer)
Comment 3 2007-09-18 07:09:04 PDT
Not a regression as Safari 2.0.4 (419.3) with original WebKit on Mac OS X 10.4.10 (8R218) behaves the same way.
Brent Fulgham
Comment 4 2022-07-11 16:07:26 PDT
Safari, Chrome, and Firefox show the same rendering behavior for this test case. I do not believe any further compatibility issue remains.
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