python – matplotlib在tkinter画布中的缩放功能

我唯一的问题是matplotlib中的标准缩放/滚动(使用鼠标左键“移动”绘图和鼠标右键“缩放”)在画布中无法访问,基本上是功能matplotlib绘图窗口中的’4尖十字’.

我认为这需要创建我自己的处理程序,但我认为必须有一种方法来使用matplotlib的默认处理程序？我也看过this问题中提到的’滚动’画布选项,但那些似乎只是改变了绘图区域的大小而不是放大/缩小数据,我也不想再添加任何按钮来操纵情节区.

我目前最简单的代码：

#! /usr/bin/env python
from Tkinter import *
import matplotlib.pyplot as plt
import matplotlib.backends.backend_tkagg as tkagg
import tkFileDialog

class App():
    def __init__(self,master):
        # VARIABLES
        self.inputFile = ""
        self.fig = plt.Figure()
        self.canvas = tkagg.FigureCanvasTkAgg(self.fig,master = master)
        self.canvas.get_tk_widget().pack()
        self.canvas.draw()

        # FRAME
        frame = Frame(master)
        master.title("MassyTools 0.1.1 (Alpha)")

        # VARIABLE ENTRIES

        # BUTTONS

        # MENU
        menu = Menu(root)
        root.config(menu = menu)

        filemenu = Menu(menu)
        menu.add_cascade(label="File",menu=filemenu)
        filemenu.add_command(label="Open Input File",command = self.openFile)
        calibmenu = Menu(menu)
        menu.add_cascade(label="Calibrate",menu=calibmenu)
        calibmenu.add_command(label="Open Calibration File",command = self.openCalibrationFile)
        calibmenu.add_command(label="Calibrate",command = self.calibrateData)  

    def openFile(self):
        file_path = tkFileDialog.askopenfilename()
        setattr(self,'inputFile',file_path)
        data = self.readData()
        self.plotData(data)

    def openCalibrationFile(self):
        print "Place holder for selection of the calibration file"

    def calibrateData(self):
        print "Place holder for actual calibration"

    def readData(self):
        x_array = []
        y_array = []
        with open(self.inputFile,'r') as fr:
            for line in fr:
                line = line.rstrip('n')
                values = line.split()
                x_array.append(float(values[0]))
                y_array.append(float(values[1]))
        return zip(x_array,y_array)

    def plotData(self,data):
        x_array = []
        y_array = []
        for i in data:
            x_array.append(i[0])
            y_array.append(i[1])
        self.fig.clear()
        self.axes = self.fig.add_subplot(111)
        self.line,= self.axes.plot(x_array,y_array)
        self.canvas.draw()

# Stuff that is not being used now but can be useful                        
    """def openFile(self,number):
        name = tkFileDialog.askopenfilename()
        ops = {
            1: 'deglycoData',2: 'peptideFile',3: 'mzML'
        }
        setattr(self,ops[number],name)
    """
# End of 'stuff'

root = Tk()
app = App(root)
root.mainloop()