wx 框架中的 Matplotlib 条形图而不是新窗口

Question

我有一个简单的 wxFrame 和两个面板。我希望其中一个面板显示 matplotlib 条形图。我学会了使用图表，但我使用的 show() 函数在新窗口中提供了图表。

 import wx
import wx.grid as gridlib
import os
import Image
import pylab as p

class PanelOne(wx.Panel):
    def __init__(self, parent):
        """Constructor"""
        wx.Panel.__init__(self, parent=parent)
        #txt = wx.TextCtrl(self)
        button =wx.Button(self, label="Save", pos=(200, 325))
        button.Bind(wx.EVT_BUTTON, parent.onSwitchPanels)

class PanelTwo(wx.Panel):
    def __init__(self, parent):
        """Constructor"""
        wx.Panel.__init__(self, parent=parent)


        sizer = wx.BoxSizer(wx.VERTICAL)
        self.SetSizer(sizer)
        fig=p.figure()
        ax=fig.add_subplot(1,1,1)
        x=[1,2,3]
        y=[4,6,3]
        ax.bar(x,y)
        p.show()

class MyForm(wx.Frame):

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY,
                          "Panel Switch",
                          size=(800,600))

        self.panel_one = PanelOne(self)
        self.panel_two = PanelTwo(self)
        self.panel_two.Hide()

        self.sizer = wx.BoxSizer(wx.VERTICAL)
        self.sizer.Add(self.panel_one, 1, wx.EXPAND)
        self.sizer.Add(self.panel_two, 1, wx.EXPAND)
        self.SetSizer(self.sizer)

        menubar = wx.MenuBar()
        fileMenu = wx.Menu()
        switch_panels_menu_item = fileMenu.Append(wx.ID_ANY,
                                                  "Switch Panels",
                                                  "Some text")
        self.Bind(wx.EVT_MENU, self.onSwitchPanels,
                  switch_panels_menu_item)
        menubar.Append(fileMenu, '&File')
        self.SetMenuBar(menubar)
-------------------------------------------------------------------
    def onSwitchPanels(self, event):

        if self.panel_one.IsShown():
           self.SetTitle("Panel Two Showing")
           self.panel_one.Hide()
           self.panel_two.Show()
        else:
           self.SetTitle("Panel One Showing")
           self.panel_one.Show()
           self.panel_two.Hide()
        self.Layout()

    if __name__ == "__main__":
    app = wx.App(False)
    frame = MyForm()
    frame.Show()
    app.MainLoop()

我在一个新的 matplotlib 窗口中得到图表，当我关闭它时，我的框架出现了。我需要图表位于框架的第二个面板中。

我尝试阅读 This ，但对我没有太大帮助。

Answer 1

您正在使用的 pyplot 函数 (p.figure) 的主要目的是处理所有 GUI 细节（与您想要的不同用途）。您想要将matplotlib 嵌入到您现有的gui 中。有关如何执行此操作，请参阅这些examples。

此代码是从embedding_in_wx2.py 提取的，以防止链接腐烂：

#!/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()

    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()