Thanks! That was at least part of the problem.
I've committed a bug fix to the svn repository.
Thanks gain,
--Michiel.
--- On Mon, 2/15/10, John Hunter <jdh2...@gmail.com> wrote:
> From: John Hunter <jdh2...@gmail.com>
> Subject: Re: [Matplotlib-users] Enter Figure on Macs
> To: "Michiel de Hoon" <mjldeh...@yahoo.com>
> Cc: "David Arnold" <dwarnol...@suddenlink.net>,
> matplotlib-users@lists.sourceforge.net
> Date: Monday, February 15, 2010, 8:07 AM
> On Mon, Feb 15, 2010 at 6:50 AM,
> Michiel de Hoon <mjldeh...@yahoo.com>
> wrote:
> > I almost have a solution for this for the Mac OS X
> backend. I am stuck though at what I should pass to
> enter_notify_event and leave_notify_event for the guiEvent:
> >
> > def leave_notify_event(self, guiEvent=None):
> > """
> > Backend derived classes should call this
> function when leaving
> > canvas
> >
> > *guiEvent*
> > the native UI event that generated
> the mpl event
> >
> > """
> >
> > What are the requirements for guiEvent? If I call
> leave_notify_event without guiEvent, so guiEvent = None,
> then the example gives me the following error:
>
> we don't make any assumptions about what kind of object the
> gui event
> is. We provide the GUI event because sometimes when
> using a specific
> backend, the user wants to drill into the GUI native event
> (eg a
> button press event) but we don't use it anywhere in the mpl
> frontend
> because this would break the abstraction. So if you
> have some event
> that is being fired at the UI level on figure enter, pass
> that in.
>
> It looks like you may be having a problem because the
> leave_notify_event is getting called more than once, or is
> called for
> a figure that has not been entered. Check the logic
> in
> backend_bases.FigureCanvasBase.leave_notify_event
>
>
> def leave_notify_event(self, guiEvent=None):
> """
> Backend derived classes should
> call this function when leaving
> canvas
>
> *guiEvent*
> the native UI
> event that generated the mpl event
>
> """
>
> self.callbacks.process('figure_leave_event',
> LocationEvent.lastevent)
> LocationEvent.lastevent = None
>
>
> It looks like your figure_leave_event is being triggered
> with
> LocationEvent.lastevent = None (so it is not a problem with
> your
> guiEvent). This could happen if a leave event was
> processed *before*
> and enter event (which sets the lastevent), or if a leave
> event was
> processed twice.
>
> Hopefully this will help you drill down into the source of
> the problem
>
> JDH
>
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