Ttkbootstrap two interlinked Meter

Triggering changes in meter values

We kept the option interactive=True, so when the value of any meter i.e amountusedvar is changed by mouse, it triggers the respective function by using the trace method.

m1.amountusedvar.trace("w", my_upd1) # Trigger on change of value
m2.amountusedvar.trace("w", my_upd2)

More about trace()

Two interlined Ttkbootstrap Meter widgets to change synchronously when any amountused is changed #8

Functions to update

Two functions are used to update the amountused parameter. These functions are called when the value or amountusedvar option of the meter is changed. Inside this function we are updating the other Meter' amountused parameter.

def my_upd1(*args): # When Meter1 is updated
    m2["amountused"] = m1["amountused"] # m2 is updated

def my_upd2(*args): # When Meter2 is updated
    m1["amountused"] = m2["amountused"] # m1 is updated

import ttkbootstrap as ttk
from ttkbootstrap.constants import *

my_w = ttk.Window()
my_w.geometry("500x250")

def my_upd1(*args): # When Meter1 is updated
    m2["amountused"] = m1["amountused"]

def my_upd2(*args): # When Meter2 is updated
    m1["amountused"] = m2["amountused"]

m1 = ttk.Meter(
    my_w,
    amountused=25,
    metersize=225,
    meterthickness=30,
    interactive=True,
)
m1.grid(row=0, column=0, padx=10, pady=10)

m2 = ttk.Meter(
    my_w,
    amountused=25,
    metersize=225,
    meterthickness=30,
    interactive=True,
    bootstyle=SUCCESS
)
m2.grid(row=0, column=1, padx=10, pady=10)

m1.amountusedvar.trace("w", my_upd1) # Trigger on change of value
m2.amountusedvar.trace("w", my_upd2)

my_w.mainloop()

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Subhendu Mohapatra

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	05-04-2025
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Two Interlinked Meters

Triggering changes in meter values

Functions to update

Subhendu Mohapatra