[Matplotlib-users] matplotlib picking mouseevent.key=None

2012-03-13 Thread gsal

Say, on Windows, the mouseevent.key correctly comes in as control, shift, or
a letter...on Linux, it does notI am always getting None.

is this a known problem with known solution? 

thanks,

gsal
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Re: [Matplotlib-users] matplotlib picking mouseevent.key=None

2012-03-13 Thread Benjamin Root
On Tue, Mar 13, 2012 at 10:05 AM, gsal  wrote:

>
> Say, on Windows, the mouseevent.key correctly comes in as control, shift,
> or
> a letter...on Linux, it does notI am always getting None.
>
> is this a known problem with known solution?
>
>
Which backend are you using?  Also, which mouse event are you using where
you expect a key value?  I would expect to use a key press event to process
.key values.

Ben Root
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Re: [Matplotlib-users] matplotlib picking mouseevent.key=None

2012-03-13 Thread John Hunter
On Tue, Mar 13, 2012 at 10:05 AM, gsal  wrote:

>
> Say, on Windows, the mouseevent.key correctly comes in as control, shift,
> or
> a letter...on Linux, it does notI am always getting None.
>
> is this a known problem with known solution?
>
>
We need more information, what is your backend, what is you GUI toolkit
version?  If you post a minimal script that exposes the problem, and run it
with --verbose-helpful and post the output, we can see if we can replicate
the problem.

JDH
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Re: [Matplotlib-users] matplotlib picking mouseevent.key=None

2012-03-13 Thread gsal

Here are some imports: 

# PyQt4 modules
from PyQt4.QtCore import *
from PyQt4.QtGui  import *

# matplotlib modules
import matplotlib.patches as mpathes
import matplotlib.text as mtext
import matplotlib.lines as mlines
from matplotlib.path import Path
from matplotlib.collections import LineCollection

from matplotlib.figure import Figure
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as
FigureCanvas
from matplotlib.backends.backend_qt4agg import NavigationToolbar2QTAgg as
NavigationToolbar

And this:
matplotlib.__version__ => 0.99.1.1

I am afraid I may not be able to run a rather minimal app right away since
this is somebody else's Qt app, pretty large, that I am trying to add some
plotting...I will see if I can get start another minimal Qt app...

For now, there isn't much of a problem with the application, it is just that
I inspect the mouseevent from within the picker function and I get this

None
1


where
None is the key
1 is the mouse button pressed
and the rest is the artist





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Re: [Matplotlib-users] matplotlib picking mouseevent.key=None

2012-03-13 Thread gsal

Here are some imports: 

# PyQt4 modules 
from PyQt4.QtCore import * 
from PyQt4.QtGui  import * 

# matplotlib modules 
import matplotlib.patches as mpathes 
import matplotlib.text as mtext 
import matplotlib.lines as mlines 
from matplotlib.path import Path 
from matplotlib.collections import LineCollection 

from matplotlib.figure import Figure 
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as
FigureCanvas 
from matplotlib.backends.backend_qt4agg import NavigationToolbar2QTAgg as
NavigationToolbar 

And this: 
matplotlib.__version__ => 0.99.1.1 

I am afraid I may not be able to run a rather minimal app right away since
this is somebody else's Qt app, pretty large, that I am trying to add some
plotting...I will see if I can get start another minimal Qt app... 

For now, there isn't much of a problem with the application, it is just that
I inspect the mouseevent from within the picker function and I get this 

None 
1 
 

where 
None is the key 
1 is the mouse button pressed 
and the rest is the artist 
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Re: [Matplotlib-users] matplotlib picking mouseevent.key=None

2012-03-17 Thread gsal

o.k., here is some minimal code...what am I doing wrong? 

Within the picker (def pkr)...I would like to be able to see the
mouseevent.key value, but this is always None...is this the expected
behaviour? Is mouseevent.key not set at this point?

Anye hints would be greatly appreciated.

[code]
import sys

import matplotlib.patches as mpathes
import matplotlib.text as mtext
import matplotlib.lines as mlines
from matplotlib.path import Path

from PyQt4.QtGui import *

from matplotlib.figure import Figure
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as
FigureCanvas
from matplotlib.backends.backend_qt4agg import NavigationToolbar2QTAgg as
NavigationToolbar

class AAA():
pass

class Qt4MplCanvas(FigureCanvas):
   """class to represent the FigureCanvas widget"""
   def __init__(self, parent, data):
  self.data = data
  self.fig = Figure()
  self.axes = self.fig.add_subplot(111)
  self.axes.set_aspect(1)  
  self.compute_initial_figure()
  FigureCanvas.__init__(self, self.fig)
  self.setParent(parent)
 
FigureCanvas.setSizePolicy(self,QSizePolicy.Expanding,QSizePolicy.Expanding)
  FigureCanvas.updateGeometry(self)
  
class MagnedMplCanvas(Qt4MplCanvas):
   """Simple canvas with a sine plot."""
   
   def pkr(self, art, mouseevent):
   key = mouseevent.key
   button = mouseevent.button
   print key
   print button
   print art   
   return False, dict()   

   def compute_initial_figure(self):  
   GR = [1.0, 2.0, 3.0, 4.0]
   self.axes.hlines(GR,0.0,4.0,picker=self.pkr)   

class ApplicationWindow(QMainWindow):
   """Example main window"""
   def __init__(self):
  QMainWindow.__init__(self)
  self.setWindowTitle("Matplotlib Figure in a Qt4 Window
WithNavigationToolbar")
  self.main_widget = QWidget(self)
  vbl = QVBoxLayout(self.main_widget)
  
  self.data=AAA()
  self.data.nnn=0  
  
  qmc = MagnedMplCanvas(self.main_widget, self.data)
  ntb = NavigationToolbar(qmc, self.main_widget)
  vbl.addWidget(qmc)
  vbl.addWidget(ntb)
  self.main_widget.setFocus()
  self.setCentralWidget(self.main_widget)
  
qApp = QApplication(sys.argv)
aw = ApplicationWindow()
aw.show()
sys.exit(qApp.exec_())  

[/code]
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