[Webkit-unassigned] [Bug 29640] New: Negative mouse event clientX/Y after zooming and scrolling

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=29640

           Summary: Negative mouse event clientX/Y after zooming and
                    scrolling
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kimmo.kotajarvi at nomovok.com


Created an attachment (id=39920)
 --> (https://bugs.webkit.org/attachment.cgi?id=39920)
Test page for clientX/Y after zooming

Attached a test page.

When the page is zoomed in enough and then scrolled down so that the rectangle
is visible, clicking on the top left corner of the rectangle results in
negative clientY values. Amount of zooming and scrolling required depends on
the window size, of course. This is because clientX/Y values are corrected for
the zoom factor, but is it a good behavior?

For comparison, Mozilla does not attempt to correct the clientX/Y values for
zoom.

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