Mundo em Python

Vértice de uma parábola (usando Tkinter)

Publicado 10-07-2024
Caio Mário 
from tkinter import *

root = Tk()
root.geometry("500x500")
root.resizable(0, 0)
root.config(bg="#103030")
root.title("Vértice de uma parábola")

titulo = Label(text="Vértice de uma Parábola",
               font=("Arial", "28", "bold"), bg="#103030", fg="#49e3e3")
titulo.place(relx=0.08, rely=0.05)

texto_sub1 = Label(text="A:",
                   font=("Arial", "18", "bold"), bg="#103030", fg="#49e3e3")
texto_sub1.place(relx=0.25, rely=0.2)

texto_sub2 = Label(text="B:",
                   font=("Arial", "18", "bold"), bg="#103030", fg="#49e3e3")
texto_sub2.place(relx=0.25, rely=0.35)

texto_sub3 = Label(text="C:",
                   font=("Arial", "18", "bold"), bg="#103030", fg="#49e3e3")
texto_sub3.place(relx=0.25, rely=0.5)

A = StringVar()
A_entrada = Entry(textvariable=A,
                      font=("Arial", "12", "bold"),
                      bg="white", fg="blue", justify='center')
A_entrada.place(relx=0.45, rely=0.2, relwidth=0.45)
A_entrada.focus()
B = StringVar()
B_entrada = Entry(textvariable=B,
                      font=("Arial", "12", "bold"),
                      bg="white", fg="blue", justify='center')
B_entrada.place(relx=0.45, rely=0.35, relwidth=0.45)

C = StringVar()
C_entrada = Entry(textvariable=C,
                      font=("Arial", "12", "bold"),
                      bg="white", fg="blue", justify='center')
C_entrada.place(relx=0.45, rely=0.5, relwidth=0.45)

def limpar():
    A_entrada.delete(0, END)
    B_entrada.delete(0, END)
    C_entrada.delete(0, END)
    resultado_texto.config("")
def app():
    try:
        a = int(A.get())
        b = int(B.get())
        c = int(C.get())
        x_v = -b / (2 * a)
        y_v = a * x_v ** 2 + b * x_v + c
        resultado_texto.config(text=f"As coordenadas do vértice da parábola são: {x_v}, {y_v}")
    except ValueError:
        resultado_texto.config(text="Digitação errada")

but1 = Button(text="Calcular", bd=2, bg='#107db2', fg='white',
              font=('verdana', 12, 'bold'), command=app)
but1.place(relx=0.1, rely=0.65, 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=0.4, rely=0.65, 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=0.7, rely=0.65, relwidth=0.25, relheight=0.1)

resultado_texto = Label(text="",
                        font=("Arial", 12, "bold"), bg="#cfe2f3")
resultado_texto.place(relx=0.05, rely=0.8, relwidth=0.9, relheight=0.15)

root.mainloop()
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