Hi Soren,
2010/5/6 Søren Nielsen <soren.skou.niel...@gmail.com>:
> Thanks Matt,
>
> The wx.ReleaseMouse() event when called before the wx.MessageBox also works
> great.
>
> I have a similar problem when I want to make a popup menu after the user has
> clicked on a patch (through the pick event) .. it works on Windows but the
> popup menu doesn't show on Linux (or only shows in rare occasions) . A
> wx.ReleaseMouse() doesn't seem to work here.. I've made a sample script that
> shows the problem. It doesn't use the pick event, but the same problem
> applies when using the button_press_event. If I want to go through the pick
> event then of course the button_release_event workaround doesn't work
> either.
>
> Also, clicking the right and left button like crazy to make the popup menu
> show on linux can result in the error:
>
> Traceback (most recent call last):
> File
> "/usr/lib64/python2.6/site-packages/matplotlib/backends/backend_wx.py", line
> 1218, in _onKeyDown
> FigureCanvasBase.key_press_event(self, key, guiEvent=evt)
> File "/usr/lib64/python2.6/site-packages/matplotlib/backend_bases.py",
> line 1142, in key_press_event
> event = KeyEvent(s, self, key, self._lastx, self._lasty,
> guiEvent=guiEvent)
> File "/usr/lib64/python2.6/site-packages/matplotlib/backend_bases.py",
> line 970, in __init__
> LocationEvent.__init__(self, name, canvas, x, y, guiEvent=guiEvent)
> File "/usr/lib64/python2.6/site-packages/matplotlib/backend_bases.py",
> line 813, in __init__
> axes_list = [a for a in self.canvas.figure.get_axes() if
> a.in_axes(self)]
> File "/usr/lib64/python2.6/site-packages/matplotlib/axes.py", line 1538,
> in in_axes
> return self.patch.contains(mouseevent)[0]
> File "/usr/lib64/python2.6/site-packages/matplotlib/patches.py", line 501,
> in contains
> x, y = self.get_transform().inverted().transform_point(
> File "/usr/lib64/python2.6/site-packages/matplotlib/patches.py", line 119,
> in get_transform
> return self.get_patch_transform() + artist.Artist.get_transform(self)
> File "/usr/lib64/python2.6/site-packages/matplotlib/transforms.py", line
> 1033, in __add__
> return composite_transform_factory(self, other)
> File "/usr/lib64/python2.6/site-packages/matplotlib/transforms.py", line
> 2004, in composite_transform_factory
> return CompositeAffine2D(a, b)
> File "/usr/lib64/python2.6/site-packages/matplotlib/transforms.py", line
> 1964, in __init__
> Affine2DBase.__init__(self)
> File "/usr/lib64/python2.6/site-packages/matplotlib/transforms.py", line
> 1304, in __init__
> Transform.__init__(self)
> File "/usr/lib64/python2.6/site-packages/matplotlib/transforms.py", line
> 87, in __init__
> self._parents = WeakKeyDictionary()
> File "/usr/lib64/python2.6/weakref.py", line 232, in __init__
> def remove(k, selfref=ref(self)):
> RuntimeError: maximum recursion depth exceeded while calling a Python object
I don't see that error, but perhaps I didn't emulate "click like
crazy" well enough.
I also see that trying to get a Popup Menu on Linux from events
generated by mpl does not reliably display a menu. In my experience,
a work-around is to replace a direct call to
wx.Popup(menu)
with
wx.CallAfter(wx.Popup, menu)
I don't know if this is related to the problem described earlier, in
which the wx object containing the FigureCanvasWxAgg needs to call
ReleaseMouse() on Linux but not Windows. As I said earlier, I have
not investigated very thoroughly so am reluctant to jump to any
conclusions about where the problem really lies and what the best
solution is.
An example with a Popup Menu that displays on right- or left-click of
a FigureCanvasWxAgg is below.
Cheers,
--Matt Newville
#!/usr/bin/python
import wx
from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg
from matplotlib.figure import Figure
class PlotFrame(wx.Frame):
def __init__(self, title='Plot Frame', **kwds):
wx.Frame.__init__(self, None, -1, title=title, **kwds)
self.panel = wx.Panel(self, -1,size=(600,500))
self.fig = Figure()
self.canvas = FigureCanvasWxAgg(self.panel, -1, self.fig)
self.fig.add_subplot(111)
self.canvas.mpl_connect('button_press_event',
self.onMouseButtonClick)
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(self.canvas, 1, wx.LEFT |wx.TOP | wx.GROW)
self.panel.SetSizer(sizer)
self.SetAutoLayout(True)
self.Fit()
def onMouseButtonClick(self, event=None):
if event is None:
return
if event.inaxes:
menu = wx.Menu()
if event.button == 1:
menu.Append(1, 'Left Click: Set as Background file')
self.Bind(wx.EVT_MENU, self.onSelect1)
elif event.button == 3:
menu.Append(1, 'RightClick: Do something else')
self.Bind(wx.EVT_MENU, self.onSelect2)
wx.CallAfter(self.PopupMenu, menu)
def onSelect1(self, event=None):
print 'select 1'
def onSelect2(self, event=None):
print 'select 2'
if __name__ == '__main__':
app = wx.PySimpleApp()
frame = PlotFrame(title='Test')
frame.Show()
frame.Raise()
app.MainLoop()
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