[Webkit-unassigned] [Bug 23888] New: CSS -webkit-transform scale(-1, 0) on button input draws incorrectly

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Feb 10 20:54:25 PST 2009


           Summary: CSS -webkit-transform scale(-1, 0) on button input draws
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh
               URL: http://www.zachstronaut.com/lab/webkit-scale-bug.html
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: zachary.johnson at gmail.com
                CC: zachary.johnson at gmail.com

If you apply the CSS -webkit-transform: scale(-1,1) to an HTML <input
type="button" /> it causes the button to draw correctly in the sense that it is
a mirror image but incorrectly in the sense that the two ends of the button are
missing.  The Firefox 3.1 beta for OS X draws a backwards/reversed button
without this visual error.  Incidentally, I kind of think this bug didn't exist
when CSS transforms were first introduced.

I also included animation of the CSS scale() property in the example .  If you
look very closely you can see that when at a negative scale, the button leaves
little bits of itself behind as it is animated.  It does not paint correctly.

I am @zacharyjohnson on Twitter.

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