Overcoming Slow Button And Frame Display And Patchy Backgrounds For A Custom Buttonframe During Frame Resizing.

I have written an algorithm that allows a ttk.Frame to wrap multiple buttons within it such that when the buttons take up too much space horizontally the affected buttons will auto

Solution 1:

The best thing you can do is stop creating new widgets on every <Configure> event. Create them once, then move them only when you've computed that they need to move. When I resize the main window just wide enough to create a single row, your code will have created anywhere from 200 to 2000 buttons or more depending on how fast I do the resize.

An alternate solution

You might want to consider using grid rather than pack, since grid doesn't require that you create internal frames for each row.

Here's a quick and dirty example to illustrate the concept. It hasn't been tested much, but it seems to work:

import tkinter as tk
import tkinter.ttk as ttk

classFrameButtons(ttk.Frame):
    def__init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.buttons = []
        self.bind("<Configure>", self._redraw)

    def_redraw(self, event=None):
        maxwidth = self.winfo_width()
        row = column = rowwidth = 0for button in self.buttons:
            # will it fit? If not, move to the next rowif rowwidth + button.winfo_width() > maxwidth:
                row += 1
                column = 0
                rowwidth = 0
            rowwidth += button.winfo_width()
            button.grid(row=row, column=column)
            column += 1defadd_button(self, *args, **kwargs):
        '''Add one button to the frame'''
        button = ttk.Button(self, *args, **kwargs)
        self.buttons.append(button)
        self._redraw()


if __name__ == "__main__":
    root = tk.Tk()
    button_frame = FrameButtons(root)
    button_frame.pack(side="top", fill="x", expand=False)
    for i inrange(20):
        button_frame.add_button(text=str(i))
    root.mainloop()