[Tkinter] create and insert a new frame on top of another frame

[wuf]

Hi keames

Here a little snippet to play with:

import tkinter as tk
import random

APP_TITLE = "Frame Stack"
APP_XPOS = 50
APP_YPOS = 50
APP_WIDTH = 800
APP_HEIGHT = 800


class Application(object):

    def __init__(self, main_win):
        self.main_win = main_win
        
        self.build()
        
    def build(self):
        self.frame_stack = list()
        self.stack_pointer = 0
        
        self.main_frame = tk.Frame(self.main_win)
        self.main_frame.pack(fill='both', expand=True)
        self.main_frame.columnconfigure(0, weight=1)
        self.main_frame.rowconfigure(0, weight=1)
        
        button_frame = tk.Frame(self.main_frame)
        button_frame.grid(row=1, column=0, pady=4)

        self.stack_level_var = tk.StringVar()
        tk.Label(button_frame, bg='white', width=4, relief='sunken', bd=1,
            textvariable=self.stack_level_var
            ).pack(side='left', padx=10)
            
        tk.Button(button_frame, text="Up",
            command=self.button_up).pack(side='left')
        tk.Button(button_frame, text="Down",
            command=self.button_down).pack(side='left', padx=(2, 20))
        tk.Button(button_frame, text="Add",
            command=self.add_frame).pack(side='left')
        tk.Button(button_frame, text="Exit",
            command=self.main_win.destroy).pack(side='left')
        
        self.add_frame()
        
    def add_frame(self):
        level_frame = tk.Frame(self.main_frame, bg=self.random_color())
        level_frame.grid(row=0, column=0, sticky='news')
        level_frame.lift()
        self.frame_stack.append(level_frame)
        self.stack_pointer = len(self.frame_stack)-1
        self.stack_level_var.set(self.stack_pointer)  
        #self.show_level_frame()
        #self.stack_pointer += 1

    def button_up(self):
        self.stack_navigator('up')

    def button_down(self):
        self.stack_navigator('down')
    
    def stack_navigator(self, direction):
        if direction == 'up':
            if self.stack_pointer < len(self.frame_stack)-1:
                self.stack_pointer += 1
        elif direction == 'down':
            if self.stack_pointer > 0:
                self.stack_pointer -= 1
        
        self.show_level_frame()       
        print(self.stack_pointer, len(self.frame_stack), direction)   
    
    def show_level_frame(self):
                 
        self.stack_level_var.set(self.stack_pointer)        
        self.frame_stack[self.stack_pointer].lift()
                        
    def random_color (self):
        random_red = ("00" + hex(random.randint(0, 255))[2:])[-2]
        random_green = ("00" + hex(random.randint(0, 255))[2:])[-2]
        random_blue = ("00" + hex(random.randint(0, 255))[2:])[-2]
        return "#{}{}{}".format(random_red, random_green, random_blue)

           
def main():
    main_win = tk.Tk()
    main_win.title(APP_TITLE)
    main_win.geometry("+{}+{}".format(APP_XPOS, APP_YPOS))
    main_win.geometry("{}x{}".format(APP_WIDTH, APP_HEIGHT))
    
    app = Application(main_win)
    
    main_win.mainloop()
 
 
if __name__ == '__main__':
    main()      

:-)