Re: ideas on improving the performance of gtk_tree_view

[Nicolas Setton <setton adacore com>]

> What's your Cairo version?

My tests were done with the 1.4.2 release.

> The input focus rectangle has been
> identified as a performance problem some time ago:
>
> http://lists.freedesktop.org/archives/cairo/2006-October/008135.html
> "Another thing we identified at GUADEC is that the dashed stroke for
> the focus rectangle that GTK+ uses is also a performance problem. This
> is another case that we should ensure is going through the fast path
> for whole-pixel regions."

Interesting, the dashed stroke is exactly what's causing problems -  
thanks for the pointer!

> though I *think* it has been adressed since. But if you are running
> 1.4, that would hint that it still is a problem.

There have been great advances in cairo performance lately,  
unfortunately this one might have been overlooked. I'll investigate  
further.

> P.S. The performance-list[1] might be a better place for this  
> discussion...
>
> [1] http://mail.gnome.org/mailman/listinfo/performance-list

Indeed. Just subscribed to that list. In order to avoid confusing  
everyone, I'll stay on this list for now, and might open future  
topics on performance-list (or on the cairo list, if I can make  
myself useful there).

Nico