Countdown Timer

__author__ = "paulogp"

from tkinter import Tk, Frame, BOTH, Button, Label, StringVar, messagebox


class Master(Frame):
    def __init__(self, parent):
        """
        Configurações gerais
        :param parent:
        :return:
        """
        frame = Frame.__init__(self, parent, width=510, height=330)
        self.parent = parent
        self.parent.title("4 COUNTDOWN")
        self.pack(fill=BOTH, expand=1)

        # máquina 1
        self.time_str_a = StringVar()
        self.time_str_a.set("00:00")
        self.aux_a = 120
        self.label_count_a = Label(self, textvariable=self.time_str_a, font=("helvetica", 40))
        self.label_count_a.place(x=93, y=20)
        self.timer_a = Button(self, text="Máquina 1", command=self.count_down_a)
        self.timer_a.place(x=127, y=90)

        # máquina 3
        self.time_str_b = StringVar()
        self.time_str_b.set("00:00")
        self.aux_b = 120
        self.label_count_b = Label(self, textvariable=self.time_str_b, font=("helvetica", 40))
        self.label_count_b.place(x=290, y=20)
        self.timer_b = Button(self, text="Máquina 3", command=self.count_down_b)
        self.timer_b.place(x=325, y=90)

        # máquina 2
        self.time_str_c = StringVar()
        self.time_str_c.set("00:00")
        self.aux_c = 120
        self.label_count_c = Label(self, textvariable=self.time_str_c, font=("helvetica", 40))
        self.label_count_c.place(x=93, y=180)
        self.timer_c = Button(self, text="Máquina 2", command=self.count_down_c)
        self.timer_c.place(x=127, y=250)

        # máquina 4
        self.time_str_d = StringVar()
        self.time_str_d.set("00:00")
        self.aux_d = 120
        self.label_count_d = Label(self, textvariable=self.time_str_d, font=("helvetica", 40))
        self.label_count_d.place(x=290, y=180)
        self.timer_d = Button(self, text="Máquina 4", command=self.count_down_d)
        self.timer_d.place(x=325, y=250)

        # acerca de...
        self.aboutButton = Button(self, text=" ? ", command=self.about)
        self.aboutButton.place(x=5, y=5)

    def count_down_a(self):
        """
        Máquina 1 - Contagem decrescente.
        :return:
        """
        self.timer_a.config(state="disabled")
        if self.aux_a == 0:
            self.timer_a.config(state="active")
            self.aux_a = 120
        else:
            self.aux_a -= 1
            sf = "{:02d}:{:02d}".format(*divmod(self.aux_a, 60))
            self.time_str_a.set(sf)
            self.parent.after(1000, self.count_down_a)

    def count_down_b(self):
        """
        Máquina 3 - Contagem decrescente.
        :return:
        """
        self.timer_b.config(state="disabled")
        if self.aux_b == 0:
            self.timer_b.config(state="active")
            self.aux_b = 120
        else:
            self.aux_b -= 1
            sf = "{:02d}:{:02d}".format(*divmod(self.aux_b, 60))
            self.time_str_b.set(sf)
            self.parent.after(1000, self.count_down_b)

    def count_down_c(self):
        """
        Máquina 2 - Contagem decrescente.
        :return:
        """
        self.timer_c.config(state="disabled")
        if self.aux_c == 0:
            self.timer_c.config(state="active")
            self.aux_c = 120
        else:
            self.aux_c -= 1
            sf = "{:02d}:{:02d}".format(*divmod(self.aux_c, 60))
            self.time_str_c.set(sf)
            self.parent.after(1000, self.count_down_c)

    def count_down_d(self):
        """
        Máquina 4 - Contagem decrescente.
        :return:
        """
        self.timer_d.config(state="disabled")
        if self.aux_d == 0:
            self.timer_d.config(state="active")
            self.aux_d = 120
        else:
            self.aux_d -= 1
            sf = "{:02d}:{:02d}".format(*divmod(self.aux_d, 60))
            self.time_str_d.set(sf)
            self.parent.after(1000, self.count_down_d)

    def about(self):
        """
        Dialogo com informação do responsável.
        :return:
        """
        messagebox.showwarning("About", "Paulo G.P., 2015.")

if __name__ == "__main__":
    root = Tk()
    app = Master(root)
    root.mainloop()