[Webkit-unassigned] [Bug 34333] New: border-image doesn't centre-align edge slices

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=34333

           Summary: border-image doesn't centre-align edge slices
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
               URL: http://dl.dropbox.com/u/299613/border-image.html
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kapowaz+webkitbugzilla at gmail.com


When using the border-image CSS3 property on an element, the edge ‘slices’ of
the element are given an edge based on the source image. However the origin of
the image slice isn't centred horizontally or vertically, which makes it
impossible to position a key part of the border image in the middle of that
edge. The attached URL demonstrates the problem. In Safari the box is given a
border on all sides, but the chevron is missing from the right-hand edge of the
element. In Firefox 3.5+ this behaves correctly (as can be seen in the provided
screengrab).

I've been unable to ascertain (due to lack of clarity in the CSS3 spec) whether
the anchoring of tiled side edges is something which is implied or should be
explicitly stated, but using the existing Firefox implementation as a
reference, it seems that Safari's behaviour here is broken.

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