Re: [matplotlib-devel] Alternate lasso: click to form polygon

[John H. <jd...@gm...>]

On Wed, Jul 30, 2008 at 4:31 PM, Eric Bruning <eri...@gm...> wrote:
> I tried with the Tk backend, and I'm seeing the same problem as Eric F
> has with GTK. The problem seems to be with idle_event not getting
> triggered on some of the backends.
>
> The checkins having to do with idle_event from the end of June
> indicate that idle_event is still somewhat experimental.
>
> What's the current status of idle_event? Can I help in some way?

I was working on idle event, to make a backend neutral api for idle
processing, animation, etc...  There was a particularly nasty problem
with tk since I had to do the threading calls myself and I am no
threading guru, so I reverted some of the changes, mainly because of
the problem of cross thread signal handling blocked the CTRL-C
interrupts.  These changes were added in r5652

  r5652 | jdh2358 | 2008-06-23 16:39:11 -0500 (Mon, 23 Jun 2008) | 1 line

  draft idle/timeout api

and subsequent refactoring

  r5653 | jdh2358 | 2008-06-23 23:17:21 -0500 (Mon, 23 Jun 2008) | 1 line

  replaced idle handler with idle event

but then reverted when Nils reported the CTRL-C bug in

  r5655 | jdh2358 | 2008-06-24 08:56:55 -0500 (Tue, 24 Jun 2008) | 1 line

  removed idle support from tkagg until I figure out interrupts

So the implementation is incomplete and tkagg needs to most work,
since for other GUIs it is fairly easy to pass through the native
enent handling.  I am not sure what the problem is with GTK right now,
and haven't had a chance to look at it.

JDH