[Webkit-unassigned] [Bug 63333] New: CSS zoom property incorrectly affects offset

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=63333

           Summary: CSS zoom property incorrectly affects offset
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mmacleod at webmail.co.za


When CSS zoom is applied to an element the element can return incorrect offset values as a results (even though it continues to display in the correct place), seemingly the code to fill in the offsets automatically assumes that the element itself has been affected by the zoom without actually checking to ensure this is the case.

Steps to reproduce:
1) Open attached testcase "zoombug.html"
2) click through 3 alert messages observing the offsetLeft value that it displays
3) observe that in each case the actual position of the div has not changed
4) observe that only the content inside the div that is zoomed the page around the div and the div itself are not affected by the zoom
5) observe that in each case the offsetLeft value of the element does change despite the fact that it is clearly offset by the exact same amount it was previously

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.