Flet Timer

The Timer is a timer class It demonstrates how to create a countdown timer using threading for real-time display updates.

Features

• Countdown Timer: Implements a dynamic countdown.
• Real-Time Updates: Displays updates in real time.
• Threading: Uses threading for non-blocking execution.

Installation

You can install Flet Timer using pip:

pip install git+https://github.com/omamkaz/flet-timer.git

Usage

Here's an example that demonstrates how to use the Timer.

First, let's define a callback function that will execute at a specified interval:

def update_time():
    timer_txt.value = datetime.now().strftime("%H:%M:%S")
    page.update()

Next, create the Timer object with the desired interval in seconds, a name, and the callback:

timer = Timer()

The complete example code would look like this:

import flet as ft
from flet_timer import Timer
from datetime import datetime


def main(page: ft.Page):
    page.title = "Timer Example 1"
    page.vertical_alignment = ft.MainAxisAlignment.CENTER
    page.horizontal_alignment = ft.CrossAxisAlignment.CENTER

    page.window.width = 360
    page.window.height = 600


    def update_time():
        timer_txt.value = datetime.now().strftime("%H:%M:%S")
        page.update()


    timer = Timer(callback=update_time)

    timer_txt = ft.Text(
        value=datetime.now().strftime("%H:%M:%S"), 
        text_align="center",
        size=24
    )

    page.add(
        timer_txt,
        ft.Button(
            text = "Start",
            on_click=lambda e: timer.start()
        ),
        ft.Button(
            text = "Stop",
            on_click=lambda e: timer.stop()
        ),
        ft.Button(
            text = "Pause",
            on_click=lambda e: timer.pause()
        ),
        ft.Button(
            text = "Resume",
            on_click=lambda e: timer.resume()
        )
    )

ft.app(target=main)

Output of above code