Why is the tkinter text widget screwing up my cell sizes?-CodePudding

All was going well as seen in the 1st pic below. all the cells are the same perfect size. its great. But then comes the implementation of the textbox. and all hell breaks loose. as seen in the 2nd picture it completely disrupts my grid layout. i dont want the textbox adjusting cell sizes, i want it to go where i tell it to go like all the other widgets do. Ive spent hours on this and no avail!

import tkinter as tk
from tkinter import ttk, scrolledtext

root = tk.Tk()
root.state('zoomed')
root.configure(background='#8585ad')

for i in range(0,20):
    for x in range(0,20):
        root.columnconfigure(i, weight=1)
        root.rowconfigure(x, weight=1)

for i in range(0, 20): # 0-19(20 is excluded) so this will loop 10x
    for x in range(0, 20):
        tk.Label(root, text=f"C-{i}, R-{x}", bg="green", fg="white").grid(column=i, row=x, sticky="NSEW", padx=1, pady=1)

main_frame = tk.Label(root, text="MAIN FRAME", bg="blue", fg="white", anchor="n").grid(column=1, row=1, columnspan=18, rowspan=18, sticky="NSEW")

frame1 = tk.Label(root, text="FRAME 1", bg="red", fg="white", anchor="n").grid(column=2, row=2, columnspan=3, rowspan=16, sticky="NSEW")
frame2 = tk.Label(root, text="FRAME 2", bg="green", fg="white", anchor="n").grid(column=6, row=2, columnspan=6, rowspan=16, sticky="NSEW")
frame3 = tk.Label(root, text=" FRAME 3", bg="red", fg="white", anchor="n").grid(column=13, row=2, columnspan=5, rowspan=16, sticky="NSEW")

for i in range(2, 5): # start at 2 and end after the 3rd loop.
    for x in range(3, 18): # to loop 15x and for index to start at 3 so i then put (3,18), 18-3 = 15
        tk.Label(root, text=f"Button-{(x-2)}", bg="white", fg="black").grid(column=i, row=x, sticky="EW", padx=5, pady=5)

frame1_header = tk.Label(root, text="User Panel", bg="black", fg="white").grid(column=2, row=2, columnspan=3, sticky="SEW", padx=5, pady=5)
frame2_header = tk.Label(root, text="Editor", bg="black", fg="white").grid(column=6, row=2, columnspan=6, sticky="SEW", padx=5, pady=5)
frame3_header = tk.Label(root, text="Info Panel", bg="black", fg="white").grid(column=13, row=2, columnspan=5, sticky="SEW", padx=5, pady=5)

frame2_text_area = tk.Label(root, text="Text Box", bg="black", fg="white", anchor="center").grid(column=6, row=3, columnspan=4, rowspan=15, sticky="NSEW", padx=5, pady=5)
frame2_list_box = tk.Label(root, text="List Box", bg="grey", fg="white", anchor="center").grid(column=10, row=3, columnspan=2, rowspan=15, sticky="NSEW", padx=5, pady=5)

frame3_tab_panel = ttk.Notebook(root)
frame3_tab_panel.grid(column=13, row=3, columnspan=5, rowspan=15, sticky="NSEW", padx=5, pady=5)
tab1 = ttk.Frame(root)
tab2 = ttk.Frame(root)
tab3 = ttk.Frame(root)
frame3_tab_panel.add(tab1, text ='Generic Editor')
frame3_tab_panel.add(tab2, text ='Text Compare')
frame3_tab_panel.add(tab3, text ='Script Ref')

# width and height does indeed adjust the texbox size but the textbox still isnt properly sticking to the grid that i set.
frame3_tab_panel_tab1 = tk.Text(root, relief="ridge", bd=2, undo=True, wrap="none", background='#1E1E1E', insertbackground='white')#, width=40, height=10)
frame3_tab_panel_tab1.grid(column=13, row=4, columnspan=5, rowspan=14, padx=5, pady=5)
frame3_tab_panel_tab1.config(font=('Consolas bold',10), fg="white")
frame3_tab_panel_tab1.focus()

root.mainloop()

"""
text_area = scrolledtext.ScrolledText(tab1, wrap = tk.WORD, width=40, height=10, font=("Times New Roman", 15))
text_area.grid(column = 0, pady = 10, padx = 10)
text_area.focus()
"""

without textbox. as you can see its all perfectly even. FYI: this is just a template im working on so i can better understand tk's positioning.

textbox ruining grid by not adjusting itself accordingly and fitting to the grid i set.

CodePudding user response：

There is a lot of wrong doing in your code and you really should take a good tutorial for tkinter and you may wish to have a brief overview of tkinters geometry management.

The biggest issue is whats causes your code to work differently as you expect it, you always define the root as the master. Every widget, except for the root window, has a master and is set by the ONLY positional argument every widget requiers. Note that if None is given, the root window is set by default. This is, because tkinter is built hirachically and at the top of this hirachy stands the root window (the instance of tk.Tk()).

A master should be a container and this means either the root window, a Toplevel or a Frame. Masters can have so called children, which can be every other widget plus frames that are handled as children. The relationship between a master and a frame are various, but for the scope of this question we will just look at the geometry.

Every widget has a geometry and can be received by the universal widget method .winfo_geometry() that will give you a geometry string 'widthxheight±x_offset±y_offset' (e.g. '120x50-0 20'). The geometry string is the basement for every calculations to order your widgets, which you can affect by choosing a geometry manager and different optional keywords. With those information an output will be created and displayed on your screen.

Suggestion:

import tkinter as tk
from tkinter import ttk, scrolledtext

def populate_frame_1():
    frame_1_label = tk.Label(frame_1,text='User Panel',
                             background = 'black',
                             foreground = 'white')
    frame_1_label.grid(column=0,row=0,sticky='ew',columnspan=3)
    frame_1.columnconfigure(0,weight=1)
    frame_1.columnconfigure(1,weight=1)
    frame_1.columnconfigure(2,weight=1)

    for i in range(0, 3):
        for x in range(1, 16):
            l = tk.Button(frame_1, text=f"Button-{(x-2)}",
                          bg="white", fg="black")
            l.grid(column=i, row=x, sticky="EW", padx=5, pady=5)

def populate_frame_2():
    frame_2_label = tk.Label(frame_2,text='Editor',
                             background = 'black',
                             foreground = 'white')
    textbox = tk.Text(frame_2,width=35)
    listbox = tk.Listbox(frame_2,bg='yellow')
    
    frame_2_label.grid(column=0,row=0,sticky='ew',columnspan=6)
    textbox.grid(column=0,row=1,sticky='ns',columnspan=4)
    listbox.grid(column=4,row=1,sticky='ns',columnspan=2)
    
    frame_2.rowconfigure(1,weight=2)

def populate_frame_3():
    frame_3_label = tk.Label(frame_3,text='Info Panel',
                             background = 'black',
                             foreground = 'white')
    frame_3_label.grid(column=0,row=0,sticky='ew',columnspan=5)

    control_panel = ttk.Notebook(frame_3)
    tab1 = ttk.Frame(control_panel)
    tab2 = ttk.Frame(control_panel)
    tab3 = ttk.Frame(control_panel)
    control_panel.add(tab1, text ='Generic Editor')
    control_panel.add(tab2, text ='Text Compare')
    control_panel.add(tab3, text ='Script Ref')
    control_panel.grid(column=0,row=1,sticky='nswe')

    frame3_tab_panel_tab1 = tk.Text(tab1, relief="ridge", bd=2, undo=True,
                                    wrap="none", background='#1E1E1E',
                                    insertbackground='white',width=40, height=10)
    frame3_tab_panel_tab1.pack(fill=tk.BOTH,expand=True)
    frame3_tab_panel_tab1.config(font=('Consolas bold',10), fg="white")
    frame3_tab_panel_tab1.focus()

    frame_3.rowconfigure(1,weight=2)
    frame_3.columnconfigure(0,weight=2)

XOFFSET = 75
YOFFSET = 50

root = tk.Tk()
root.state('zoomed')
root.configure(background='#8585ad')

main_frame = tk.Frame(root,background='blue')

frame_1 = tk.Frame(main_frame,background='red')
frame_2 = tk.Frame(main_frame,background='green')
frame_3 = tk.Frame(main_frame,background='red')

main_frame.pack(fill=tk.BOTH,expand=True,
                padx=XOFFSET,pady=YOFFSET)
frame_1.pack(side=tk.LEFT,fill=tk.BOTH,padx=XOFFSET,pady=YOFFSET,expand=True)
frame_2.pack(side=tk.LEFT,fill=tk.Y,pady=YOFFSET,expand=True)
frame_3.pack(side=tk.LEFT,fill=tk.BOTH,padx=XOFFSET,pady=YOFFSET,expand=True)

populate_frame_1()
populate_frame_2()
populate_frame_3()

root.mainloop()

CodePudding user response：

Change

frame3_tab_panel_tab1.grid(
    column=13, row=4, columnspan=5, rowspan=14, padx=5, pady=5
)

frame3_tab_panel_tab1.grid(
    column=13, row=4, columnspan=5, rowspan=14, padx=5, pady=5,
    sticky="NSEW"
)

CodePudding user response：

I managed to solve it by replacing the Text() widget with the scrolledtext.ScrolledText() widget. Its strange. No grid was required and if i remove height and width then it messes it up. Why does height and width have such an impact? why does it even exist when you have things like column and row configure along with sticky. Tkinter is quite confusing sometimes with its logic. But anyways, got there in the end.

Here's the code in case anyone encounters a similar issue.

import tkinter as tk
from tkinter import ttk, scrolledtext

root = tk.Tk()
root.state('zoomed')
root.configure(background='#8585ad')

for i in range(0,20):
    for x in range(0,20):
        root.columnconfigure(i, weight=1)
        root.rowconfigure(x, weight=1)

for i in range(0, 20): # 0-19(20 is excluded) so this will loop 10x
    for x in range(0, 20):
        tk.Label(root, text=f"C-{i}, R-{x}", bg="green", fg="white").grid(column=i, row=x, sticky="NSEW", padx=1, pady=1)

main_frame = tk.Label(root, text="MAIN FRAME", bg="blue", fg="white", anchor="n").grid(column=1, row=1, columnspan=18, rowspan=18, sticky="NSEW")

frame1 = tk.Label(root, text="FRAME 1", bg="red", fg="white", anchor="n").grid(column=2, row=2, columnspan=3, rowspan=16, sticky="NSEW")
frame2 = tk.Label(root, text="FRAME 2", bg="green", fg="white", anchor="n").grid(column=6, row=2, columnspan=6, rowspan=16, sticky="NSEW")
frame3 = tk.Label(root, text=" FRAME 3", bg="red", fg="white", anchor="n").grid(column=13, row=2, columnspan=5, rowspan=16, sticky="NSEW")

for i in range(2, 5): # start at 2 and end after the 3rd loop.
    for x in range(3, 18): # to loop 15x and for index to start at 3 so i then put (3,18), 18-3 = 15
        tk.Label(root, text=f"Button-{(x-2)}", bg="white", fg="black").grid(column=i, row=x, sticky="EW", padx=5, pady=5)

frame1_header = tk.Label(root, text="User Panel", bg="black", fg="white").grid(column=2, row=2, columnspan=3, sticky="SEW", padx=5, pady=5)
frame2_header = tk.Label(root, text="Editor", bg="black", fg="white").grid(column=6, row=2, columnspan=6, sticky="SEW", padx=5, pady=5)
frame3_header = tk.Label(root, text="Info Panel", bg="black", fg="white").grid(column=13, row=2, columnspan=5, sticky="SEW", padx=5, pady=5)

frame2_text_area = tk.Label(root, text="Text Box", bg="black", fg="white", anchor="center").grid(column=6, row=3, columnspan=4, rowspan=15, sticky="NSEW", padx=5, pady=5)
frame2_list_box = tk.Label(root, text="List Box", bg="grey", fg="white", anchor="center").grid(column=10, row=3, columnspan=2, rowspan=15, sticky="NSEW", padx=5, pady=5)

frame3_tab_panel = ttk.Notebook(root)
frame3_tab_panel.grid(column=13, row=3, columnspan=5, rowspan=15, sticky="NSEW", padx=5, pady=5)

frame3_tab_panel_tab1 = scrolledtext.ScrolledText(root, bd=2, undo=True, wrap="none", width=40, height=10, font=("Times New Roman", 15), background='#1E1E1E', insertbackground='white')
frame3_tab_panel_tab1.config(font=('Consolas bold',10), fg="white")
frame3_tab_panel_tab1.focus()
tab2 = ttk.Frame(root)
tab3 = ttk.Frame(root)
frame3_tab_panel.add(frame3_tab_panel_tab1, text ='Generic Editor')
frame3_tab_panel.add(tab2, text ='Text Compare')
frame3_tab_panel.add(tab3, text ='Script Ref')

root.mainloop()