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CountdownTimer.py
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CountdownTimer.py
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import tkinter as tk
import tkinter.messagebox
import time
class Application(tk.Frame):
def __init__(self, master, *args, **kwargs):
tk.Frame.__init__(self, master, *args, **kwargs)
self.master = master
self.running = False
self.time = 0
self.hour = 0
self.min = 0
self.sec = 0
self.hours = 0
self.mins = 0
self.secs = 0
self.build_interface()
def build_interface(self):
self.hour = tk.Label(self, text="Hour : ", font=("Courier", 10), width=8)
self.hour.grid(row=0, column=0, stick="S")
self.h_entry = tk.Entry(self)
self.h_entry.grid(row=0, column=1)
self.min = tk.Label(self, text="Min : ", font=("Courier", 10), width=8)
self.min.grid(row=1, column=0, stick="S")
self.m_entry = tk.Entry(self)
self.m_entry.grid(row=1, column=1)
self.sec = tk.Label(self, text="Sec : ", font=("Courier", 10), width=8)
self.sec.grid(row=2, column=0, stick="S")
self.s_entry = tk.Entry(self)
self.s_entry.grid(row=2, column=1)
self.clock = tk.Label(self, text="00:00:00", font=("Courier", 20), width=10)
self.clock.grid(row=3, column=1, stick="S")
self.time_label = tk.Label(self, text="hour min sec", font=("Courier", 10), width=20)
self.time_label.grid(row=4, column=1, sticky="N")
self.power_button = tk.Button(self, text="Start", command=lambda: self.start())
self.power_button.grid(row=5, column=0,padx=20,pady=10)
self.reset_button = tk.Button(self, text="Reset", command=lambda: self.reset())
self.reset_button.grid(row=5, column=1,padx=20,pady=10)
self.quit_button = tk.Button(self, text="Quit", command=lambda: self.quit())
self.quit_button.grid(row=5, column=2,padx=20,pady=10)
self.pause_button = tk.Button(self, text="Pause", command=lambda: self.pause())
self.pause_button.grid(row=5, column=3,padx=30,pady=10,sticky="E")
self.master.bind("<Return>", lambda x: self.start())
def calculate(self):
#used to calculate time and return in formatted style
self.hours = self.time // 3600
self.mins = (self.time // 60) % 60
self.secs = self.time % 60
s = "{:02d}:{:02d}:{:02d}".format(self.hours, self.mins, self.secs)
return s
def update(self):
#used to update the clock text
self.hours = int(self.h_entry.get())
self.mins = int(self.m_entry.get())
self.secs = int(self.s_entry.get())
try:
self.clock.configure(text=self.calculate())
except:
self.clock.configure(text="00:00:00")
def timer(self):
#used to check whether time is left and calls calculate to update time left value
if self.running:
if self.time <= 0:
self.clock.configure(text="Time's up!")
else:
self.clock.configure(text=self.calculate())
self.time = self.time - 1
self.after(1000,self.timer)
def start(self):
#used to initiate timer by calling timer function
try:
if self.h_entry.get():
self.hours = int(self.h_entry.get())
else:
self.hours = 0
if self.m_entry.get():
self.mins = int(self.m_entry.get())
else:
self.mins = 0
if self.s_entry.get():
self.secs = int(self.s_entry.get())
else:
self.secs = 0
self.time = (self.hours*3600) + (self.mins*60) + self.secs
self.hour.delete(0, 'end')
self.min.delete(0, 'end')
self.sec.delete(0, 'end')
except:
self.hours = self.hours
self.mins = self.mins
self.secs = self.secs
self.power_button.configure(text="Stop", command=lambda: self.stop())
self.master.bind("<Return>", lambda x: self.stop())
self.running = True
self.timer()
def stop(self):
#used to stop timer
self.power_button.configure(text="Start", command=lambda: self.start())
self.master.bind("<Return>", lambda x: self.start())
self.running = False
def reset(self):
#used to reset all fields and clock value to 0
self.power_button.configure(text="Start", command=lambda: self.start())
self.master.bind("<Return>", lambda x: self.start())
self.running = False
self.h_entry.delete(0,'end')
self.m_entry.delete(0,'end')
self.s_entry.delete(0,'end')
self.clock["text"] = "00:00:00"
def quit(self):
#used to quit the timer
if tk.messagebox.askokcancel("Quit", "Do you want to quit?"):
root.destroy()
def pause(self):
#used to pause the timer
self.pause_button.configure(text="Resume", command=lambda: self.resume())
self.master.bind("<Return>", lambda x: self.resume())
if self.running == True:
self.running = False
self.timer()
def resume(self):
#used to resume the timer
self.pause_button.configure(text="Pause", command=lambda: self.pause())
self.master.bind("<Return>", lambda x: self.pause())
if self.running == False:
self.running = True
self.timer()
if __name__ == "__main__":
"""Main loop of timer"""
root = tk.Tk()
root.title("TIMER")
Application(root).pack(side="top", fill="both", expand=True)
root.mainloop()