Showing number of chars Entered in Meter

Triggering function on adding or removal of chars inside Text widget

t1.bind("<KeyRelease>", my_upd)  # Trigger on Key release event

Function my_upd()

def my_upd(value):
    my_str = t1.get("1.0", "end-1c")  # read the string
    breaks = my_str.count("\n")  # Number of line breaks
    char_numbers = len(my_str) - breaks  # Final number of chars
    l2.config(text=str(char_numbers))  # display in Label
    m1["amountused"] = char_numbers  # connect to Meter

    if char_numbers < 50:
        m1["bootstyle"] = SUCCESS
    elif char_numbers < 75:
        m1["bootstyle"] = WARNING
    elif char_numbers < 100:
        m1["bootstyle"] = DANGER

    if char_numbers >= 100:  # to stop accepting char after limit
        t1.delete("end-2c")  # remove last char of text widget

import tkinter as tk
import ttkbootstrap as ttk
from ttkbootstrap.constants import *

# my_w = tk.Tk()
my_w = ttk.Window()
my_w.geometry("400x300")  # width x height of the window
my_w.title("www.plus2net.com")  # Adding a title

l1 = tk.Label(my_w, text="Your Data", width=10, font=20)  # added one Label
l1.grid(row=0, column=0, padx=3, pady=10, columnspan=2)

t1 = tk.Text(my_w, height=3, width=40, bg="lightgreen", font=28)  # text box
t1.grid(row=1, column=0, padx=10, columnspan=2)

l2 = tk.Label(my_w, text=0, font=22)
l2.grid(row=2, column=0, padx=5, pady=5)

m1 = ttk.Meter(
    my_w,
    amountused=0,
    metersize=130,
    meterthickness=20,
    interactive=True,
    bootstyle=SUCCESS,
)
m1.grid(row=2, column=1, padx=2, pady=5)

def my_upd(value):
    my_str = t1.get("1.0", "end-1c")  # read the string
    breaks = my_str.count("\n")  # Number of line breaks
    char_numbers = len(my_str) - breaks  # Final number of chars
    l2.config(text=str(char_numbers))  # display in Label
    m1["amountused"] = char_numbers  # connect to Meter

    if char_numbers < 50:
        m1["bootstyle"] = SUCCESS
    elif char_numbers < 75:
        m1["bootstyle"] = WARNING
    elif char_numbers < 100:
        m1["bootstyle"] = DANGER

    if char_numbers >= 100:  # to stop accepting char after limit
        t1.delete("end-2c")  # remove last char of text widget

t1.bind("<KeyRelease>", my_upd)  # Trigger on Key release event
my_w.mainloop()  # Keep the window open

Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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