python - 使用 wxPython 和 matplotlib 的简单应用程序卡住

Question

我试图让 matplotlib 与 wxPython 合作，我下面列出的应用程序表现得很尴尬:在 Ubuntu 下它按预期工作，但在 Windows XP 下它似乎卡住了，即按钮对点击没有反应，并且元素重叠(好像 GridSizer 没有工作)。我究竟做错了什么？

更新:将 GridSizer 更改为 BoxSizer 后，在两个操作系统下一切正常，但 GridSizer 的问题仍未解决。

# wxPython module
import wx
# Matplotlib Figure object
from matplotlib.figure import Figure
# Numpy functions for image creation
import numpy as np

# import the WxAgg FigureCanvas object, that binds Figure to
# WxAgg backend. In this case, this is a wxPanel
from matplotlib.backends.backend_wxagg import \
FigureCanvasWxAgg as FigureCanvas

class MyFigurePanel(wx.Panel):
  """Class to represent a Matplotlib Figure as a wxFrame"""
  def __init__(self, parent):
    wx.Panel.__init__(self, parent)
    # usual Matplotlib functions
    self.figure = Figure()#figsize=(6, 4), dpi=100)
    self.axes = self.figure.add_subplot(111)
    x = np.arange(0, 6, .01)
    y = np.sin(x**2)*np.exp(-x)
    self.axes.plot(x, y)
    # initialize the FigureCanvas, mapping the figure to
    # the Wx backend
    self.canvas = FigureCanvas(self, wx.ID_ANY, self.figure)

class MyButtonPanel(wx.Panel):
  def __init__(self, parent):
    wx.Panel.__init__(self, parent)
    save_button = wx.Button(self, label = 'SAVE se')



class MyFrame(wx.Frame):
  def __init__(self):
    wx.Frame.__init__(self,None)
    panelx = wx.Panel(self)
    self.figure = MyFigurePanel(panelx)
    self.buttons = MyButtonPanel(panelx)
    grid = wx.GridSizer(1,2)
    grid.Add(self.figure)
    grid.Add(self.buttons)
    panelx.SetSizer(grid)


# Create a wrapper wxWidgets application     
app = wx.PySimpleApp()
# instantiate the Matplotlib wxFrame
frame = MyFrame()
# show it
frame.Show(True)
# start wxWidgets mainloop
app.MainLoop()

Answer 1

这有效(在修改 MyFrame 之后):

from matplotlib.backends.backend_wxagg import \
FigureCanvasWxAgg as FigureCanvas

class MyFigurePanel(wx.Panel):
  """Class to represent a Matplotlib Figure as a wxFrame"""
  def __init__(self, parent):
    wx.Panel.__init__(self, parent)
    self.figure = Figure()#figsize=(6, 4), dpi=100)
    self.axes = self.figure.add_subplot(111)
    x = np.arange(0, 6, .01)
    y = np.sin(x**2)*np.exp(-x)
    self.axes.plot(x, y)
    self.canvas = FigureCanvas(self, wx.ID_ANY, self.figure) 

class MyButtonPanel(wx.Panel):
  def __init__(self, parent):
    wx.Panel.__init__(self, parent)
    button = wx.Button(self, label = 'SAVE se')

class MyFrame(wx.Frame):
  def __init__(self):
    wx.Frame.__init__(self, None)
    self.figure = MyFigurePanel(self)
    self.buttons = MyButtonPanel(self)
    grid = wx.BoxSizer(wx.VERTICAL)
    grid.Add(self.buttons, flag=wx.EXPAND)
    grid.Add(self.figure, flag=wx.EXPAND)
    self.SetSizer(grid)
    self.Fit()


# Create a wrapper wxWidgets application     
app = wx.PySimpleApp()
# instantiate the Matplotlib wxFrame
frame = MyFrame()
# show it
frame.Show(True)
# start wxWidgets mainloop
app.MainLoop()

使其运行的关键变化是消除了 MyFrame 中的面板。实际上你已经添加了两个面板。我还使用 wx.BoxSizer() 以获得更好的外观(GridSizer 生成相同大小的单元格)