[Sugar-devel] How to have "CellRenderer.props" take effect, without a UI refresh?

[Flavio Danesse]

self.get_property('window').invalidate_rect(self.get_allocation(), True)
self.get_property('window').process_updates(True)




2012/7/30 Sascha Silbe <silbe at activitycentral.com>

> Ajay Garg <ajay at activitycentral.com> writes:
>
> >> [adding short-circuit logic to
> >> jarabe.journal.listview.BaseListView.refresh()]
> [...]
> >> What we should do is enhancing the logic to
> >>
> >> a) just redraw instead of querying the back-end again for changes we
> >>    triggered ourselves and / or
> >> b) update our model based on the change notifications rather than
> >>    throwing away our state.
> >>
> >
> > Well, that's exactly what I did, via the patch
> >
> http://git.sugarlabs.org/dextrose/mainline/commit/ad3897946e013f1ff4020aeab35375ccb122758b
>
> Not really AFAICT. You're still inhibiting the refresh completely,
> without doing a redraw. You're also doing a gratuitous data store query
> for each favourite star. I'm expecting that to have considerable impact
> on performance.
>
>
> > I guess, if we could somehow cause the mouse to PROGRAMMATICALLY
> > hover-away/disappear-momentarily when the star/favorite-icon is clicked,
> we
> > could be done.
> > However, I am not able to find a way to do this via pygtk.
>
> Fortunately. :-P
>
> As discussed on IRC, the way to _trigger_ _a_ _redraw_ (not: move the
> pointer) is something like this:
>
>     x_, y_, width, height = self.allocation
>     area = (0, 0, width, height)
>     self.window.invalidate_rect(area, False)
>
>
> Sascha
> --
> http://sascha.silbe.org/
> http://www.infra-silbe.de/
>
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