from tkinter import *
root = Tk()
root.geometry("500x500")
root.resizable(0,0)
root.config(bg="#d9ead3")

def limpar():
    capital_entrada.delete(0, END)
    Lucro_liquido_entrada.delete(0, END)
    Lucro_operacional_entrada.delete(0, END)
    investimento_entrada.delete(0, END)
def app():
    lucrooperacional = Lucro_operacional.get()
    I = investimento.get()
    Capital = capital.get()
    Lucroliquido = Lucro_liquido.get()
    roe = Lucroliquido/Capital
    roi = lucrooperacional/I
    gaf = roe/roi
    gafarr = round(gaf,3)
    resultado.set(gafarr)


root.title("Grau de Alavancagem Financeira")
titulo = Label(text="Calcular Grau de Alavancagem Financeira ",bg="#d9ead3",fg="#0b5394",
               font=("Arial","14","bold"))
titulo.place(relx=0.1,rely=0.05)


Lucro_operacional_texto = Label(text="Lucro Operacional: ",bg="#d9ead3",fg="#0b5394",
               font=("Arial","12","bold"))
Lucro_operacional_texto.place(relx=0.15,rely=0.15)

investimento_texto = Label(text="Investimento: ",bg="#d9ead3",fg="#0b5394",
               font=("Arial","12","bold"))
investimento_texto.place(relx=0.23,rely=0.3)

capital_texto = Label(text="Capital Próprio: ",bg="#d9ead3",fg="#0b5394",
               font=("Arial","12","bold"))
capital_texto.place(relx=0.2,rely=0.45)

Lucro_liquido_texto = Label(text="Lucro Líquido: ",bg="#d9ead3",fg="#0b5394",
               font=("Arial","12","bold"))
Lucro_liquido_texto.place(relx=0.2,rely=0.6)

Lucro_operacional = DoubleVar()
Lucro_operacional_entrada= Entry(textvariable=Lucro_operacional,
                            font=("Arial","12","bold"),
                     bg="white",fg="blue",justify='center')
Lucro_operacional_entrada.place(relx=0.5,rely=0.15,relwidth=0.2)



investimento = DoubleVar()
investimento_entrada= Entry(textvariable=investimento,
                            font=("Arial","12","bold"),
                     bg="white",fg="blue",justify='center')
investimento_entrada.place(relx=0.5,rely=0.3,relwidth=0.2)


capital = DoubleVar()
capital_entrada= Entry(textvariable=capital,
                            font=("Arial","12","bold"),
                     bg="white",fg="blue",justify='center')
capital_entrada.place(relx=0.5,rely=0.45,relwidth=0.2)
Lucro_liquido = DoubleVar()
Lucro_liquido_entrada= Entry(textvariable=Lucro_liquido,
                            font=("Arial","12","bold"),
                     bg="white",fg="blue",justify='center')
Lucro_liquido_entrada.place(relx=0.5,rely=0.6,relwidth=0.2)

#,command=app
but1 = Button( text="Calcular", bd=2, bg='#107db2', fg='white',
              font=('verdana', 12, 'bold'),command=app)
but1.place(relx=0.3, rely=0.7, relwidth=0.2, relheight=0.1)
#
but_limpar = Button( text="Limpar", bd=2, bg='#107db2', fg='white',
              font=('verdana', 12, 'bold'),command=limpar)
but_limpar.place(relx=0.55, rely=0.7, relwidth=0.2, relheight=0.1)
resultado = StringVar()
resulatdoresultado =Label(textvariable=resultado,
                          font=("Arial",12,"bold"),bg="#f0f8ff")
resulatdoresultado.place(relx=0.6,rely=0.85,relwidth=0.3)

resulatdo_texto =Label(text="Grau de Alavancagem Financeira",
                          font=("Arial",12,"bold"),bg="#d9ead3",fg="#0b5394")
resulatdo_texto.place(relx=0.05,rely=0.85)


root.mainloop()