Re: Cairo / Highlighting

["Jasper St. Pierre" <jstpierre mecheye net>]

You can't apply a blur using only cairo. If you want to change the
background, paint it first, and then paint the icon. If you want to
highlight it, use CAIRO_OPERATOR_OVERLAY and paint a white rectangle
with a low alpha.

On Sat, Mar 31, 2012 at 8:53 AM, Lanoxx <lanoxx gmx net> wrote:
> Hi,
>
> given cairo type cr which contains an icon. How can I produce some kind of
> highlighting on this icon. For example light it up a little and change the
> background (the parts which are transparent) to a different color (e.g
> white), or even using a light white blur as background.
>
> Im sure it only requires a few calls to cairo but as I am not very familiar
> with cairo maybe someone can give me a suggestion.
>
> Best Regarads
> Lanoxx
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-- 
  Jasper