MAB 225 - Computação II - Fabio Mascarenhas

Interfaces Gráficas IV (14/06/2011)

Layout usando subframes e side = "left"

from Tkinter import *

f = Frame()

sf1 = Frame(f)
sf2 = Frame(f)
l1 = Label(sf1)
l1["text"] = "Label1"
l2 = Label(sf2)
l2["text"] = "Label2"
e1 = Entry(sf1)
e2 = Entry(sf2)
for ctrl in [l1, l2, e1, e2]:
    ctrl["font"] = "Arial 20"

l1.pack(side = "left")
e1.pack()
l2.pack(side = "left")
e2.pack()
sf1.pack()
sf2.pack()
f.pack()

mainloop()

Conversão de números romanos, layout com grid

Arquivo romano.py:

romanos = {
  'unidades': [ "",  "I",   "II",   "III",   "IV",   "V",   "VI",   "VII",   "VIII",   "IX" ],
  'dezenas':  [ "",  "X",   "XX",   "XXX",   "XL",   "L",   "LX",   "LXX",   "LXXX",   "XC" ],
  'centenas': [ "",  "C",   "CC",   "CCC",   "CD",   "D",   "DC",   "DCC",   "DCCC",   "CM" ],
  'milhares': [ "",  "M",   "MM",   "MMM" ]
}
    
nomes = {
  1000: 'milhares',
  100: 'centenas',
  10: 'dezenas',
  1: 'unidades'
}

def romano(n):
  res = ""
  for d in [1000,100,10,1]:
      res = res + romanos[nomes[d]][n / d]
      n = n % d
  return res

def arabico(r):
    n = 0
    j = 0
    for num in [1000, 100, 10, 1]:
        nome = nomes[num]
        for i in range(-1, -len(romanos[nome])-1, -1):
            parte = romanos[nome][i]
            if r.find(parte, j, j+len(parte)) != -1:
                n = n + num * (len(romanos[nome]) + i)
                j = j + len(parte)
    return n

for i in range(1, 4000):
    assert(i == arabico(romano(i)))

Arquivo grid.py:

from Tkinter import *
from romano import *

f = Frame()

titulo = Label(f)
titulo["text"] = "Conversor"
titulo.pack()
sf = Frame(f)
l1 = Label(sf)
l1["text"] = "Arabico"
l2 = Label(sf)
l2["text"] = "Romano"
e1 = Entry(sf)
e2 = Entry(sf)
b1 = Button(sf)
b2 = Button(sf)
b1["text"] = "->"
b2["text"] = "<-"
for ctrl in [l1, l2, e1, e2, b1, b2, titulo]:
    ctrl["font"] = "Arial 20"

l1.grid(column = 0, row = 0)
e1.grid(column = 1, row = 0)
l2.grid(column = 0, row = 1)
e2.grid(column = 1, row = 1)
b1.grid(column = 2, row = 0)
b2.grid(column = 2, row = 1)
sf.pack()
f.pack()

var_e1 = IntVar()
var_e1.set(1)
e1["textvariable"] = var_e1
var_e2 = StringVar()
e2["textvariable"] = var_e2

def cmd_b1():
    n = var_e1.get()
    r = romano(n)
    var_e2.set(r)

b1["command"] = cmd_b1

def cmd_b2():
    var_e1.set(arabico(var_e2.get()))

b2["command"] = cmd_b2

mainloop()