from tkinter import *
root = Tk()
root.geometry("450x400")
root.resizable(0, 0)
root.config(bg="#28679e")
root.title("Taxa de Crescimento de Dividendos")
titulo = Label(text="Taxa de Crescimento de Dividendos",
               font=("Arial", "16", "bold"),bg="#28679e",fg="#ccd8e3")
titulo.place(relx=0.05, rely=0.05)
texto_sub1  = Label(text="Dividendo actual:",
                    font=("Arial", "14", "bold"),bg="#28679e",fg="#ccd8e3")
texto_sub1.place(relx=0.15, rely=0.25)

texto_sub2  = Label(text="Dividendo Inicial:",
                    font=("Arial", "14", "bold"),bg="#28679e",fg="#ccd8e3")
texto_sub2.place(relx=0.15, rely=0.45)

Dividendo_actual = DoubleVar()
Dividendo_actual_entrada = Entry(textvariable=Dividendo_actual,
                             font=("Arial", "12", "bold"),
                             bg="white", fg="blue", justify='center')
Dividendo_actual_entrada.place(relx=0.6, rely=0.25, relwidth=0.3)

Dividendo_Inicial = DoubleVar()
Dividendo_Inicial_entrada = Entry(textvariable=Dividendo_Inicial,
                             font=("Arial", "12", "bold"),
                             bg="white", fg="blue", justify='center')
Dividendo_Inicial_entrada.place(relx=0.6, rely=0.45, relwidth=0.3)
def limpar():
    Dividendo_Inicial_entrada.delete(0, END)
    Dividendo_actual_entrada.delete(0, END)
    resultado.set("")
def app():
    di = Dividendo_Inicial.get()
    da = Dividendo_actual.get()
    try:
        taxa_crescimento = ((da - di) / di) * 100
        mensagem = f"A taxa de crescimento de dividendos é de {round(taxa_crescimento,2)} %"
    except ZeroDivisionError:
        mensagem = "O Dividendo inicial não pode ser zero."
    resultado.set(mensagem)



but1 = Button(text="Calcular", bd=2, bg='#107db2', fg='white',
              font=('verdana', 12, 'bold'), command=app)
but1.place(relx=0.05, rely=0.6, relwidth=0.25, relheight=0.1)
but_limpar = Button(text="Limpar", bd=2, bg='#107db2', fg='white',
                    font=('verdana', 12, 'bold'), command=limpar)
but_limpar.place(relx=0.35, rely=0.6, relwidth=0.25, relheight=0.1)

but_sair = Button(text="Sair", bd=2, bg='#107db2', fg='white',
                    font=('verdana', 12, 'bold'), command=root.destroy)
but_sair.place(relx=0.65, rely=0.6, relwidth=0.25, relheight=0.1)
resultado = StringVar()
resultado_texto = Label(textvariable=resultado,
                           font=("Arial", 12, "bold"), bg="#cfe2f3")
resultado_texto.place(relx=0.05, rely=0.78, relwidth=0.9,relheight=0.15)
root.mainloop()