.. _user_interfaces-embedding_in_wx2:

user_interfaces example code: embedding_in_wx2.py
=================================================

[`source code <embedding_in_wx2.py>`_]

::

    #!/usr/bin/env python
    """
    An example of how to use wx or wxagg in an application with the new
    toolbar - comment out the setA_toolbar line for no toolbar
    """
    
    # Used to guarantee to use at least Wx2.8
    import wxversion
    wxversion.ensureMinimal('2.8')
    
    from numpy import arange, sin, pi
    
    import matplotlib
    
    # uncomment the following to use wx rather than wxagg
    #matplotlib.use('WX')
    #from matplotlib.backends.backend_wx import FigureCanvasWx as FigureCanvas
    
    # comment out the following to use wx rather than wxagg
    matplotlib.use('WXAgg')
    from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas
    
    from matplotlib.backends.backend_wx import NavigationToolbar2Wx
    
    from matplotlib.figure import Figure
    
    import wx
    
    class CanvasFrame(wx.Frame):
    
        def __init__(self):
            wx.Frame.__init__(self,None,-1,
                             'CanvasFrame',size=(550,350))
    
            self.SetBackgroundColour(wx.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.canvas = FigureCanvas(self, -1, self.figure)
    
            self.sizer = wx.BoxSizer(wx.VERTICAL)
            self.sizer.Add(self.canvas, 1, wx.LEFT | wx.TOP | wx.GROW)
            self.SetSizer(self.sizer)
            self.Fit()
    
            self.add_toolbar()  # comment this out for no toolbar
    
    
        def add_toolbar(self):
            self.toolbar = NavigationToolbar2Wx(self.canvas)
            self.toolbar.Realize()
            if wx.Platform == '__WXMAC__':
                # Mac platform (OSX 10.3, MacPython) does not seem to cope with
                # having a toolbar in a sizer. This work-around gets the buttons
                # back, but at the expense of having the toolbar at the top
                self.SetToolBar(self.toolbar)
            else:
                # On Windows platform, default window size is incorrect, so set
                # toolbar width to figure width.
                tw, th = self.toolbar.GetSizeTuple()
                fw, fh = self.canvas.GetSizeTuple()
                # By adding toolbar in sizer, we are able to put it at the bottom
                # of the frame - so appearance is closer to GTK version.
                # As noted above, doesn't work for Mac.
                self.toolbar.SetSize(wx.Size(fw, th))
                self.sizer.Add(self.toolbar, 0, wx.LEFT | wx.EXPAND)
            # update the axes menu on the toolbar
            self.toolbar.update()
    
    
        def OnPaint(self, event):
            self.canvas.draw()
    
    class App(wx.App):
    
        def OnInit(self):
            'Create the main window and insert the custom frame'
            frame = CanvasFrame()
            frame.Show(True)
    
            return True
    
    app = App(0)
    app.MainLoop()
    

Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)