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"""
Example to draw a cursor and report the data coords in wx
"""
# matplotlib requires wxPython 2.8+
# set the wxPython version in lib\site-packages\wx.pth file
# or if you have wxversion installed un-comment the lines below
#import wxversion
#wxversion.ensureMinimal('2.8')
import matplotlib
matplotlib.use('WXAgg')
from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas
from matplotlib.backends.backend_wx import NavigationToolbar2Wx, wxc
from matplotlib.figure import Figure
from numpy import arange, sin, pi
import wx
class CanvasFrame(wx.Frame):
def __init__(self, ):
wx.Frame.__init__(self, None, -1,
'CanvasFrame', size=(550, 350))
self.SetBackgroundColour(wxc.NamedColour("WHITE"))
self.figure = Figure()
self.axes = self.figure.add_subplot(111)
t = arange(0.0, 3.0, 0.01)
s = sin(2*pi*t)
self.axes.plot(t, s)
self.axes.set_xlabel('t')
self.axes.set_ylabel('sin(t)')
self.figure_canvas = FigureCanvas(self, -1, self.figure)
# Note that event is a MplEvent
self.figure_canvas.mpl_connect('motion_notify_event', self.UpdateStatusBar)
self.figure_canvas.Bind(wx.EVT_ENTER_WINDOW, self.ChangeCursor)
self.sizer = wx.BoxSizer(wx.VERTICAL)
self.sizer.Add(self.figure_canvas, 1, wx.LEFT | wx.TOP | wx.GROW)
self.SetSizer(self.sizer)
self.Fit()
self.statusBar = wx.StatusBar(self, -1)
self.SetStatusBar(self.statusBar)
self.toolbar = NavigationToolbar2Wx(self.figure_canvas)
self.sizer.Add(self.toolbar, 0, wx.LEFT | wx.EXPAND)
self.toolbar.Show()
def ChangeCursor(self, event):
self.figure_canvas.SetCursor(wxc.StockCursor(wx.CURSOR_BULLSEYE))
def UpdateStatusBar(self, event):
if event.inaxes:
x, y = event.xdata, event.ydata
self.statusBar.SetStatusText(("x= " + str(x) +
" y=" + str(y)),
0)
class App(wx.App):
def OnInit(self):
'Create the main window and insert the custom frame'
frame = CanvasFrame()
self.SetTopWindow(frame)
frame.Show(True)
return True
if __name__ == '__main__':
app = App(0)
app.MainLoop()
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