Question

我搜索了很多但发现无法用这个内容框架正确填充可滚动画布。总有额外的空间。

在下面的代码中找到了SO并适用于一个简单示例，我希望我的DummyFrame组件占用画布剩余的所有额外空间。

import Tkinter as tk

class DummyFrame(tk.Frame):
    def __init__(self, root):
        tk.Frame.__init__(self, root, borderwidth=10, background="#ff0000")
        tk.Label(self, text="DummyLabel").grid(row=0, column=0, sticky="wnes")
        self.columnconfigure(0, weight=1)
        self.rowconfigure(0, weight=1)

class Example(tk.Frame):
    def __init__(self, root):
        tk.Frame.__init__(self, root)

        self.canvas = tk.Canvas(root, borderwidth=0, background="#ffffff")
        self.frame = tk.Frame(self.canvas, borderwidth=10, background="#000000")
        self.vsb = tk.Scrollbar(root, orient="vertical", command=self.canvas.yview)
        self.canvas.configure(yscrollcommand=self.vsb.set)

        self.vsb.grid(row=0, column=1, sticky="wnes")
        self.canvas.grid(row=0, column=0, sticky="wnes")
        self.canvas.create_window((0,0), window=self.frame, anchor="nw", 
                                  tags="self.frame")

        self.frame.columnconfigure(0, weight=1)
        self.frame.rowconfigure(0, weight=1)
        self.frame.bind("<Configure>", self.OnFrameConfigure)

        self.columnconfigure(0, weight=1)
        self.rowconfigure(0, weight=1)

        self.populate()

    def populate(self):
        for i_row in range(50):
            #Component I want to take extra space when resizing window
            DummyFrame(self.frame).grid(row = i_row+1, column = 0, sticky="we")

    def OnFrameConfigure(self, event):
        '''Reset the scroll region to encompass the inner frame'''
        self.canvas.configure(scrollregion=self.canvas.bbox("all"))

if __name__ == '__main__':
    fenetre = tk.Tk()
    fenetre.geometry('{}x{}'.format(800, 600))
    Example(fenetre)
    fenetre.columnconfigure(0, weight=1)
    fenetre.rowconfigure(0, weight=1)
    fenetre.mainloop()

Answer 1

这个例子非常奇怪。因此，在画布窗口的Frame中有DummyFrames，它位于Frame的画布中。很难看到这里发生了什么，以及哪个小部件维度控制了用户看到的最终维度。不过，如果你想让DummyFrame作为根窗口的宽度（即800 px），只需更改画布窗口宽度：

self.canvas.create_window((0,0), window=self.frame, anchor="nw", 
                          width=800,
                          tags="self.frame")

Answer 2

最后，我使用画布的itemconfigure找到了符合我需求的东西：

import Tkinter as tk

class DummyFrame(tk.Frame):
    def __init__(self, root):
        tk.Frame.__init__(self, root, borderwidth=10, background="#ff0000")
        tk.Label(self, text="DummyLabel").grid(row=0, column=0, sticky="wnes")
        self.columnconfigure(0, weight=1)
        self.rowconfigure(0, weight=1)
        pass

class Example(tk.Frame):
    def __init__(self, root):
        tk.Frame.__init__(self, root)

        self.canvas = tk.Canvas(root, borderwidth=0, background="#0000ff")
        self.vsb = tk.Scrollbar(root, orient="vertical", command=self.canvas.yview)
        self.canvas.configure(yscrollcommand=self.vsb.set)
        self.canvas.bind("<Configure>", self.OnCanvasConfigure)
        self.vsb.grid(row=0, column=1, sticky="wnes")
        self.canvas.grid(row=0, column=0, sticky="wnes")

        self.frame = tk.Frame(self.canvas, borderwidth=10, background="#000000")
        self.frame.columnconfigure(0, weight=1)
        self.frame.rowconfigure(0, weight=1)

        self.window = self.canvas.create_window((0,0), window=self.frame, anchor="nw",
                          tags="self.frame")

        self.columnconfigure(0, weight=1)
        self.rowconfigure(0, weight=1)

        self.populate()

    def populate(self):
        for i_row in range(50):
            #Component I want to take extra space when resizing window
            DummyFrame(self.frame).grid(row = i_row+1, column = 0, sticky="we")

    def OnCanvasConfigure(self, event):
        self.canvas.itemconfigure(self.window, width=event.width)
        self.canvas.configure(scrollregion=self.canvas.bbox("all"))

if __name__ == '__main__':
    fenetre = tk.Tk()
    fenetre.geometry('{}x{}'.format(800, 600))
    Example(fenetre)
    fenetre.columnconfigure(0, weight=1)
    fenetre.rowconfigure(0, weight=1)
    fenetre.mainloop()

tkinter：使用框架内容填充可滚动画布

2 个答案: