[Webkit-unassigned] [Bug 146997] New: [WinCairo] SVG path not rendered with all-zero dasharray

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=146997

            Bug ID: 146997
           Summary: [WinCairo] SVG path not rendered with all-zero
                    dasharray
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Windows 7
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: hur.ims at navercorp.com
                CC: zimmermann at kde.org

SVG path with "stroke-dasharray:0" style is not rendered at all.
This is because cairo_set_dash() doesn't expect all-zero dashes.

W3C SVG v1.1 spec says, "If the sum of the values is zero, then the stroke is rendered as if a value of none were specified."
So, correct rendering would be achieved if cairo_set_dash() is skipped. 

Also, from the FireFox patch[1], I recognized that CanvasRenderingContext2D.setLineDash() has the same problem because it also uses the same cairo API.
Though, I couldn't find any reference about all-zero dash array in Canvas 2D Context spec, it would be better to be rendered as a solid line rather than nothing.

[1] https://bugzilla.mozilla.org/show_bug.cgi?id=1169609

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.webkit.org/pipermail/webkit-unassigned/attachments/20150716/558bfdea/attachment-0001.html>