[Webkit-unassigned] [Bug 29470] New: [Qt] Webkit: canvas drawimage translation offset error - displays clipped/no image.

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Sep 18 08:34:38 PDT 2009


https://bugs.webkit.org/show_bug.cgi?id=29470

           Summary: [Qt] Webkit: canvas drawimage translation offset error
                    - displays clipped/no image.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Other
        OS/Version: Mac OS X 10.5
            Status: NEW
          Keywords: Qt
          Severity: Normal
          Priority: P2
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: vestbo at webkit.org


This bug report originated from issue QTBUG-3070
<http://bugreports.qt.nokia.com/browse/QTBUG-3070>

--- Description ---

Applying canvas.context.translate will cause the image to clip/not draw. This
problem also occurs in the 4.51tp1.  

Using a small 29x29 pixel image, webkit html javascript will fail to draw
properly: 
canvas = document.getElementById('graphitem2'); 
ctx = canvas.getContext('2d'); 
ctx.translate(10,10); 
ctx.drawImage(targetboximage,0,0);

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