[IPython-dev] What is the status of iPython+wx?
Chris.Barker at noaa.gov
Mon Mar 29 12:38:38 EDT 2010
Brian Granger wrote:
> A warning: we are not GUI (or wx) experts, so it is likely you know
> more about wx that we do...
OK -- if I get stuck, hopefully I can get Robin Dunn interested...
> I should say more about how the %gui magic works. If you do:
> %gui wx
> All that happens is that we do what its needed to start the event
> loop. We do not in this case create a wx Application or do anything
I'm really confused as to how you can start an event loop without an App
-- but I guess I'll dig into the code to figure that out.
> If you do this, it will be your repsonsibility to create and
> manage an Application object. BUT, don't start the event loop
> yourself, it is already running.
> A warning: you may have to pass very
> specific options to the wx App when you create it. See our app
> creation logic here for details of what you will likely have to do:
> If you do:
> %gui -a wx
> We start the event loop AND create a wx Application passing reasonable
> options. In this case, you should not create an App, but rather just
> get the one IPython created using wx.GetApp().
Got it -- I had only seen the "-a" option in the docs, so that is what I
was messing with.
> What I don't know is what wx does if the App gets closed down. We
> don't do anything unusual though that would mess with how wx handles
> this type of thing.
>> If I close the frame, then call run gui-wx.py -- it is unstable,
>> freezing up on me fairly quickly.
> I am guessing the App gets shutdown and that kills any further wx goodness.
yup -- wx doesn't support stopping and restarting an App.
>> I haven't looked yet at the ipython code to see what you are doing in
>> appstart_wx. I'll try to do that soon.
> Yes, also look at enable_wx. We don't do much at all.
> Have a look at what we are doing - it is basically \epsilon, so for
> the most part wx should be doing what you tell it to. BUT, this is
> way different from the older IPython. There we used to do a lot to
> hijack/monkeypatch wx so many thing happened automagically. but
> monkeypatching = crashing.
yes, it can mean that.
I think I'm envisioning having a "IpythonWxApp", that would act like a
normal wx app when run on it's own, and do special stuff when run under
wx -- Ideally it would live with wx, but that's not too big a deal.
Hopefully I"ll get a bit of time to try to write such a beast.
Christopher Barker, Ph.D.
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Chris.Barker at noaa.gov
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