在Glad/GTK3滚动窗口中嵌入Matplotlib不会显示maplotlib

使用的系统:Windows 7 蟒蛇:2.7.12 填料函:3.14.2 使用的库:matplotlib,networkx

你好 我试图在GTK上显示嵌入matplotlib的图形。滚动窗口上的显示不起作用。然而,当我试图用工具栏保存它时,我实际上可以保存它。

import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
from figure1 import figure
from matplotlib.figure import Figure
from matplotlib.backends.backend_gtk3cairo import FigureCanvasGTK3Cairo as          FigureCanvas
from matplotlib.backends.backend_gtk3 import NavigationToolbar2GTK3 as NavigationToolbar

class main_function():

def __init__(self):
    interface= Gtk.Builder()
    interface.add_from_file("interface1.glade")   
    interface.connect_signals(self)
          # relier les signaux aux fonctions        
    # on stocke notre fichier Glade dans des variables
    self.mainWindow=interface.get_object("mainWindow")
    self.aboutchronomap=interface.get_object("aboutchronomap")
    self.fichierdialogue=interface.get_object("fichierdialogue")
    self.sw=interface.get_object("mainFigure")
    self.sw2=interface.get_object("MatplotlibToolbar")
   # on stocke les widgets avec les interfaces
    canvas = FigureCanvas(figure())
    print(type(canvas))
    print(type(figure()))
    self.sw.add_with_viewport(canvas)
    print("self.sw.add_with_viewport(canvas)")        
    toolbar = NavigationToolbar(canvas, self.mainWindow)
    self.sw2.add_with_viewport(toolbar)   
    print("toolbar display")


main_function()
Gtk.main() 

图1.py代码:

from gi.repository import Gtk
import matplotlib.pyplot as plt
from matplotlib.figure import Figure
from numpy import sin, cos, pi, linspace


def figure():
    fig = Figure(figsize=(5,5), dpi=80)
    ax = fig.add_subplot(111)

    n = 1000
    xsin = linspace(-pi, pi, n, endpoint=True)
    xcos = linspace(-pi, pi, n, endpoint=True)
    ysin = sin(xsin)
    ycos = cos(xcos)

    sinwave = ax.plot(xsin, ysin, color='black', label='sin(x)')
    coswave = ax.plot(xcos, ycos, color='black', label='cos(x)', linestyle='--')

    ax.set_xlim(-pi,pi)
    ax.set_ylim(-1.2,1.2)

    ax.fill_between(xsin, 0, ysin, (ysin - 1) > -1, color='blue', alpha=.3)
    ax.fill_between(xsin, 0, ysin, (ysin - 1) < -1, color='red',  alpha=.3)
    ax.fill_between(xcos, 0, ycos, (ycos - 1) > -1, color='blue', alpha=.3)
    ax.fill_between(xcos, 0, ycos, (ycos - 1) < -1, color='red',  alpha=.3)

    ax.legend(loc='upper left')

    ax = fig.gca()
    ax.spines['right'].set_color('none')
    ax.spines['top'].set_color('none')
    ax.xaxis.set_ticks_position('bottom')
    ax.spines['bottom'].set_position(('data',0))
    ax.yaxis.set_ticks_position('left')
    ax.spines['left'].set_position(('data',0))
    return fig

图形通常应显示的滚动窗口的Glade xml代码:

<child>
                  <object class="GtkScrolledWindow" id="mainFigure">
                    <property name="visible">True</property>
                    <property name="can_focus">True</property>
                    <property name="hscrollbar_policy">always</property>
                    <property name="vscrollbar_policy">always</property>
                    <property name="shadow_type">in</property>
                    <child>
                      <placeholder/>
                    </child>
                  </object>
                  <packing>
                    <property name="expand">True</property>
                    <property name="fill">True</property>
                    <property name="position">1</property>
                  </packing>
</child>

我的显示器:

如果我使用工具栏上的“保存”按钮,我实际上得到了正确的数字:

在GTK上,我看不到它。 有人能帮我吗?

非常感谢。 米娅