# utility function that centers the program window on our screen
def center_window(toplevel):
    toplevel.update_idletasks()
    screen_width = toplevel.winfo_screenwidth()
    screen_height = toplevel.winfo_screenheight()
    size = tuple(int(_) for _ in toplevel.geometry().split('+')[0].split('x'))
    x = screen_width/2 - size[0]/2
    y = screen_height/2 - size[1]/2
    toplevel.geometry("+%d+%d" % (x, y))

def move_window(event):
    window.geometry('+{0}+{1}'.format(event.x_root, event.y_root))


window=tk.Tk()
window.title("Cutom title bar")
window.iconbitmap(default='icon.ico')
window.config(borderwidth=2)

window.columnconfigure(0,minsize=600)
window.rowconfigure([0],minsize=30)

window.rowconfigure([1,2],minsize=100)
# hiding the default title bar
window.overrideredirect(True)

topbar_frame=tk.Frame(master=window,bg="#f20011",bd=2)
lbl_title=tk.Label(master=topbar_frame,text="Shopify Order",       background=TOP_BACKGROUND_COLOR,foreground="#fafafa")
lbl_title.pack(side=tk.LEFT)

# put a close button on the title bar
close_button = tk.Button(topbar_frame, text='  X  ',borderwidth=0,relief=tk.SOLID,background="#ff3d57",activebackground="#e3001e",foreground="#ebebeb",command=window.destroy)
close_button.pack(side=tk.RIGHT)

min_button = tk.Button(topbar_frame, text='  _  ',borderwidth=0,relief=tk.SOLID,background="#ededeb",activebackground="#e3001e",foreground="#000000",command=lambda:window.wm_state("iconic"))
min_button.pack(side=tk.RIGHT)


# bind title bar motion to the move window function
topbar_frame.bind('<B1-Motion>', move_window)
topbar_frame.grid(row=0,column=0,sticky='new')

window.mainloop()

import tkinter as tk
import tkinter.ttk as ttk
import requests
import threading
import tempfile
import os
import time


progress_window=tk.Tk()
progress_window.geometry('400x60')
progress_window.title("Querying file size..")
progressbar=ttk.Progressbar(master=progress_window, orient = tk.HORIZONTAL, 
        length = 100, mode = 'determinate')
progressbar.pack(ipadx=4,ipady=4,padx=(12,12),pady=(12,12))

def download_file():
    session=requests.Session()
    response=session.get("http://ipv4.download.thinkbroadband.com/10MB.zip",stream=True)
    total_size_in_bytes= int(response.headers.get('Content-Length', 500*1024))
    block_size = 1024*50 # 50kb block size

    with tempfile.TemporaryDirectory() as tmp_dir:
        tmp_filename=os.path.join(tmp_dir,'response.data')
    
        with open(tmp_filename, 'wb') as file:
            downloaded=0
            for data in response.iter_content(block_size):
                file.write(data)
                downloaded+=len(data)
                if downloaded==0:
                    progressbar['value']=0
                else:
                    progressbar['value'] = int((downloaded/total_size_in_bytes)*100)
                progress_window.title(f"Downloaded {downloaded} of {total_size_in_bytes} bytes.")
                progress_window.update()
                time.sleep(.1)
    progress_window.destroy()
    
progress_window.after(300,lambda: threading.Thread(target=download_file).start())
progress_window.mainloop()