Ttkbootstrap Meter managing bootstyle based on value of amountusedvar

Triggering changes in meter value

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

m1.amountusedvar.trace_add("write", my_upd) # On change of amountusedvar

More about trace_add()

Bootstyle parameter to manage colour based on amountused value of a Ttkbootstrap Meter widget #7

Function my_upd()

This function is called when the value or amountusedvar option of the meter is changed. 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(*args):
    if m1["amountused"] <= 30:
        m1["bootstyle"] = SUCCESS
    elif m1["amountused"] <= 60:
        m1["bootstyle"] = PRIMARY
    elif m1["amountused"] <= 90:
        m1["bootstyle"] = WARNING
    else:
        m1["bootstyle"] = DANGER

import ttkbootstrap as ttk
from ttkbootstrap.constants import *

my_w = ttk.Window()
my_w.geometry("400x300")

def my_upd(*args):
    if m1["amountused"] <= 30:
        m1["bootstyle"] = SUCCESS
    elif m1["amountused"] <= 60:
        m1["bootstyle"] = PRIMARY
    elif m1["amountused"] <= 90:
        m1["bootstyle"] = WARNING
    else:
        m1["bootstyle"] = DANGER

m1 = ttk.Meter(
    my_w,
    amountused=10,
    metersize=300,
    meterthickness=40,
    interactive=True,
    metertype=SEMI,
    bootstyle=SUCCESS,
)
m1.grid(row=0, column=0, padx=60, pady=10)

m1.amountusedvar.trace_add("write", my_upd) # On change of amountusedvar

my_w.mainloop()

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Subhendu Mohapatra

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Meter bootstyle based on Range

Triggering changes in meter value

Function my_upd()

Subhendu Mohapatra