Re: gtk.TreeModel.iter_children() method, how often should it be called?

[Gerald Britton <gerald britton gmail com>]

Not using TreeViewSort.  I certainly agree about excessive calls.  So
the question must then be, "why is TreeView redrawing the view over
and over again?"  Also, "What is TreeView looking for to make it stop
redrawing the view?"

On Tue, Jun 23, 2009 at 4:43 PM, Kristian Rietveld<kris gtk org> wrote:
> On Tue, Jun 23, 2009 at 7:50 PM, Gerald Britton<gerald britton gmail com> wrote:
>> Did some more  checking and inserted some debugging statements, I found that:
>>
>> on_iter_next is called 23808 times after updating one line in my
>> 43-element tree.  That''s almost twenty-four thousand times!  I'm
>> going to try to find a way to implement your idea but I'd really like
>> to know:
>
> That many calls is really excessive for a model containing only 43
> items.  Tree view calls the iter_next() and iter_children() methods
> when redrawing the view.  So, it might be the case that tree view is
> doing many unnecessary redraws, leading to the unnecessary walks of
> the model.
>
> Or maybe you are using GtkTreeModelSort and are seeing many
> unnecessary sorting operations?
>
>
> regards,
>
> -kris.
>



-- 
Gerald Britton