[sugar] Notify active event firing

[Tomeu Vizoso]

Eduardo, I think you were working on some kind of Sugar Cookbook?
Perhaps this should go there.

Thanks,

Tomeu

On Sun, 2007-11-04 at 01:45 -0500, Benjamin M. Schwartz wrote:
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> Arjun Sarwal wrote:
> > I need to turn off some drawing code when the user switches to Home View
> > (why waste so much of CPU power in the meanwhile)
> > How can I do that ?
> 
> I just figured this out while writing Clock.  In my activity's __init__, I do:
> 
>         self.add_events(gtk.gdk.VISIBILITY_NOTIFY_MASK)
>         self.connect("visibility-notify-event", self._visible_cb)
> 
> then later,
> 
>     def _visible_cb(self, widget, event):
>         if event.state == gtk.gdk.VISIBILITY_FULLY_OBSCURED:
>             self._innards.pause()
>         else:
>             self._innards.resume()
> 
> It works perfectly.
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>