Showing number of chars Entered in Meter

Ttkbootstrap meter range

Display the number of chars entered by the user and update the colour of the Meter by using bootstyle parameter.

Triggering function on adding or removal of chars inside Text widget

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

Ttkbootstrap Meter widgets to show number of chars entered by user with colour zone bands #9

Function my_upd()

This function calculate the number of chars entered by the user inside the text widget. This value is displayed on the Label and our Meter m1 sets the amountused value to this number. Inside this function we will keep if elif condition checks to set the option bootstyle to different colors. There are 8 different colors are already avilable here is the list.

PRIMARY, SECONDARY, SUCCESS, INFO, WARNING, DANGER, LIGHT, DARK
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
Ttkbootstrap Meter bootstyle option using range Two Interlinked Meters
Ttkbootstrap Meter
ttkbootstrap
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