[IPython-dev] [Enthought-Dev] Ctypes based prototype of PyOS_InputHook for wx 2.8 and 2.9

Ondrej Certik ondrej@certik...
Fri Jul 17 00:11:19 CDT 2009


On Thu, Jul 16, 2009 at 4:42 PM, Robert Kern<rkern@enthought.com> wrote:
> On Thu, Jul 16, 2009 at 17:26, Brian Granger<ellisonbg.net@gmail.com> wrote:
>> Hi,
>>
>> I am attaching a working ctypes based prototype of a module that allows wx
>> to be used interactively from *both* python and ipython.  It uses
>> PyOS_InputHook and has been tested on wx 2.8 and 2.9 (trunk) on Mac OS X
>> (python 2.5).
>>
>> It can be used with an existing wx install and all versions of ipython, but
>> ***don't use the -pylab or -wthread flag***.  At this point, I need help
>> testing the heck out of this (window and linux users esp).  I have run most
>> matplotlib pylab_examples and they work fine.  I also need people to try out
>> things like ETS/Mayavi.  The current plan is to replace the existing
>> threaded shells in IPython with this (much simpler) code.
>
> Works for me with wx 2.8.8.1 on OS X 10.5 and Chaco. Pan and zoom
> interactions are substantially chunky, though. I do not see such
> chunkiness with -wthread. It would be worth exploring a Cython
> alternative to see if it is just ctypes and general Python overhead to
> blame.

Works for me on Ubuntu 9.04 with default packages (wx 2.8.9.1), I
tried this example:

In [1]: import inputhook

In [2]: inputhook.set_inputhook_wx()

In [3]: app = wx.App(redirect=False, clearSigInt=False)
---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)

/home/ondrej/Desktop/<ipython console> in <module>()

NameError: name 'wx' is not defined

In [4]: import wx

In [5]: app = wx.App(redirect=False, clearSigInt=False)

In [6]: from matplotlib import pyplot as plt

In [7]: plt.interactive(True)

In [8]: plt.plot(range(10))
Out[8]: [<matplotlib.lines.Line2D object at 0x3917090>]


(maybe you want to add "import wx" into that example docstring)


Pan is perfectly smooth, zoom is a bit chunky, but not much, it's
definitely usable.

Ondrej


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