嵌入Wx4

如何在具有自定义工具栏的应用程序中使用wxagg的示例。

  1. from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas
  2. from matplotlib.backends.backend_wxagg import NavigationToolbar2WxAgg as NavigationToolbar
  3. from matplotlib.backends.backend_wx import _load_bitmap
  4. from matplotlib.figure import Figure
  6. import numpy as np
  8. import wx
  11. class MyNavigationToolbar(NavigationToolbar):
  12.     """
  13.     Extend the default wx toolbar with your own event handlers
  14.     """
  15.     ON_CUSTOM = wx.NewId()
  17.     def __init__(self, canvas, cankill):
  18.         NavigationToolbar.__init__(self, canvas)
  20.         # for simplicity I'm going to reuse a bitmap from wx, you'll
  21.         # probably want to add your own.
  22.         self.AddTool(self.ON_CUSTOM, 'Click me', _load_bitmap('back.png'),
  23.                      'Activate custom contol')
  24.         self.Bind(wx.EVT_TOOL, self._on_custom, id=self.ON_CUSTOM)
  26.     def _on_custom(self, evt):
  27.         # add some text to the axes in a random location in axes (0,1)
  28.         # coords) with a random color
  30.         # get the axes
  31.         ax = self.canvas.figure.axes[0]
  33.         # generate a random location can color
  34.         x, y = np.random.rand(2)
  35.         rgb = np.random.rand(3)
  37.         # add the text and draw
  38.         ax.text(x, y, 'You clicked me',
  39.                 transform=ax.transAxes,
  40.                 color=rgb)
  41.         self.canvas.draw()
  42.         evt.Skip()
  45. class CanvasFrame(wx.Frame):
  46.     def __init__(self):
  47.         wx.Frame.__init__(self, None, -1,
  48.                           'CanvasFrame', size=(550, 350))
  50.         self.figure = Figure(figsize=(5, 4), dpi=100)
  51.         self.axes = self.figure.add_subplot(111)
  52.         t = np.arange(0.0, 3.0, 0.01)
  53.         s = np.sin(2 * np.pi * t)
  55.         self.axes.plot(t, s)
  57.         self.canvas = FigureCanvas(self, -1, self.figure)
  59.         self.sizer = wx.BoxSizer(wx.VERTICAL)
  60.         self.sizer.Add(self.canvas, 1, wx.TOP | wx.LEFT | wx.EXPAND)
  62.         self.toolbar = MyNavigationToolbar(self.canvas, True)
  63.         self.toolbar.Realize()
  64.         # By adding toolbar in sizer, we are able to put it at the bottom
  65.         # of the frame - so appearance is closer to GTK version.
  66.         self.sizer.Add(self.toolbar, 0, wx.LEFT | wx.EXPAND)
  68.         # update the axes menu on the toolbar
  69.         self.toolbar.update()
  70.         self.SetSizer(self.sizer)
  71.         self.Fit()
  74. class App(wx.App):
  75.     def OnInit(self):
  76.         'Create the main window and insert the custom frame'
  77.         frame = CanvasFrame()
  78.         frame.Show(True)
  80.         return True
  82. app = App(0)
  83. app.MainLoop()

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