在 tkinter Toplevel 中调整 matplotlib 图的大小

Question

我有一些代码可以在 tkinter 顶级小部件中打开绘图。当我抓住顶层的一角来调整它的大小时，我希望绘图与窗口一起调整大小。

import Tkinter
import matplotlib
matplotlib.use('TkAgg')
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
from matplotlib.backends.backend_tkagg import NavigationToolbar2TkAgg
from matplotlib.figure import Figure

class grapher_gui(Tkinter.Tk):
    def __init__(self,parent):
        Tkinter.Tk.__init__(self,parent)
        self.parent = parent
        self.graph()

    def graph(self):
        x_vals = [0,3,10,15]
        y_vals = [232,120,45,23]

        toplevel = Tkinter.Toplevel(width=2000)
        figure = Figure(figsize=(10,5))
        ax = figure.add_subplot(111)
        plot = ax.plot(x_vals, y_vals, 'k-')
        ax.set_xlabel('Time')
        ax.set_ylabel('Numbers')
        ax.set_title('Title')

        canvas = FigureCanvasTkAgg(figure, master=toplevel)
        canvas.show()
        canvas.get_tk_widget().grid(row=0)            
        toolbar = NavigationToolbar2TkAgg(canvas, toplevel)
        toolbar.grid(row=1, sticky=Tkinter.W) 
        toolbar.update() 
        toplevel.mainloop()

if __name__ == "__main__":
    app = grapher_gui(None)
    app.title('Grapher')
    app.mainloop()

我唯一能想到尝试的就是添加sticky='NSEW'到canvas.get_tk_widget().grid(row=0)，但这不起作用。

Answer 1

尝试使用packwithexpand=True而不是gridwith sticky。这个简化的示例适用于我，图表随窗口调整大小：

import matplotlib
matplotlib.use('TkAgg')
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
from matplotlib.figure import Figure

import Tkinter as tk
import ttk

class My_GUI:

    def __init__(self,master):
        self.master=master
        master.title("Dashboard")
        f = Figure(figsize=(5,5), dpi=100)
        a = f.add_subplot(111)
        a.scatter([1,2,3,4,5,6,7,8],[5,6,1,3,8,9,3,5])
        canvas1=FigureCanvasTkAgg(f,master)
        canvas1.show()
        canvas1.get_tk_widget().pack(side="top",fill='both',expand=True)
        canvas1.pack(side="top",fill='both',expand=True)

root=tk.Tk()
gui=My_GUI(root)
root.mainloop()

我知道这可能很困难，具体取决于您的 gui 使用 pack 重新设计的程度...但可能值得而不是制作自定义调整大小事件处理程序。不过，我确实很同情，如果网格和粘性适用于图表那就太好了：/