Re: Add Gaussian Blur to Shape Shadow

Thanks Ariya, but the shadow blur process the shape itself, while the
KoShapeShadow is designed to draw the shadow directly.
After referenced the code in KoShapeManager::paintShape I correct all
the mistakes in my code, now only some tweaks to the arguments about
blur radius and buffer image size needed.

Here is a preview:
http://picasaweb.google.com/lh/photo/hkaYDywuHUneQtP_TMEvsg?feat=directlink

I‘ll do more tweaks then it would be ready.

On Mon, Nov 1, 2010 at 12:05 AM, Ariya Hidayat <[email protected]> wrote:
>>> Is there a simple method to blur a QPixmap object? I only found
>>> QGraphicsBlurEffect but it only works on QGraphicsItem.
>>>
>>
>> There is a class BlurEffect in Karbon that can do this with a QImage. It
>> would probably be possible to use the filter framework to do a blurred
>> shadow.
>
> Which is using stack blur.
>
> Try my attempt, see
> http://ariya.blogspot.com/2010/09/art-of-blurring-shadow.html, which
> is slightly faster. The shadow blur function is only 70 lines.
>
>
> --
> Ariya Hidayat
> http://www.linkedin.com/in/ariyahidayat
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