[webkit-dev] Box shadow

Mike Reed mikerreed at gmail.com
Tue Jan 9 07:04:03 PST 2007


Do we need to use clips for round-rects? In my implementation these
are always hard-edged (no antialiasing). Is that true for Qt as well?
CG? I would prefer being asked to draw round-rects (filled or stroked)
directly with no clipping...

On 1/8/07, David Hyatt <hyatt at apple.com> wrote:
> I just landed support for the CSS3 box-shadow property.  This
> entailed adding a few new methods to GraphicsContext.  I stubbed
> these methods out on Qt but did not implement them.
>
> They are:
>
> void clipOut(const IntRect&);
>         Excludes the specified rect from the clipping region.
>
> void clipOutEllipseInRect(const IntRect&);
>         Same, but for an ellipse drawn inside the specified rect.
>
> void fillRoundedRect(const IntRect&, const IntSize& topLeft, const
> IntSize& topRight, const IntSize& bottomLeft, const IntSize&
> bottomRight, const Color&);
>          Fills a rounded rect (with elliptical curvature in the four
> corners) with the specified color.
>
> Note that the fillRoundedRect method arguably should be cross-
> platform, relying on primitives instead.   This is an area for
> improvement, if someone wants to rework it to use the cross-platform
> Path class etc.
>
> dave
> (hyatt at apple.com)
>
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>



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