[Webkit-unassigned] [Bug 40793] [GTK] The size of the shadow image uses the standard deviation size instead of the blur radius

Thu Jul 1 13:23:41 PDT 2010

https://bugs.webkit.org/show_bug.cgi?id=40793

Alejandro G. Castro <alex at igalia.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #59026|0                           |1
        is obsolete|                            |
  Attachment #60279|                            |review?
               Flag|                            |

--- Comment #2 from Alejandro G. Castro <alex at igalia.com>  2010-07-01 13:23:41 PST ---
Created an attachment (id=60279)
 --> (https://bugs.webkit.org/attachment.cgi?id=60279)
Proposed patch

This is a first final proposal, I checked the visual result of other browsers.

            The kernelSize variable was renamed to radius and recalculated
            considering the CSS3 specification
            http://www.w3.org/TR/css3-background/#the-box-shadow, and the
            visual result of other browsers. The HTML5 canvas shadow standard
            deviation calculation that was used, was not appropiate for the
            blur distance specified in the CSS3.

            Added also the recomendations of SVG regarding the kernel size
            calculation for the approximation of the gaussian
            blur. http://www.w3.org/TR/SVG/filters.html#feGaussianBlurElement

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