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Calculator.py
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Calculator.py
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# -*- coding: utf-8 -*-
from Window import Window
from helpers import *
class Calculator (Window):
def __init__ (self, title):
Window.__init__(self, title)
self.create_grid()
self.size_screen = (3, 1)
self.buttons = '% . = 0 1 - 2 3 + 4 5 x 6 7 ÷ 8 9 DEL ( ) AC'.split()
self.input_box = self.Gtk.Label()
self.input_box.set_name('input')
self.input_box.set_xalign(0)
self.output_box = self.Gtk.Label('0.')
self.output_box.set_name('output')
self.output_box.set_xalign(1)
count = 0
for i in xrange(8, 1, -1):
for j in xrange(0, 3):
btn = self.create_button(self.buttons[count], j, i)
btn.connect('clicked', self.on_clicked_btn)
count += 1
self.add_grid(self.input_box, 0, 0, self.size_screen)
self.add_grid(self.output_box, 0, 1, self.size_screen)
self.add(self.grid)
def input_add_text (self, text):
input_text = self.input_box.get_text()
input_text += text
self.input_box.set_text(input_text)
def on_clicked_btn (self, button):
operators = '+ - / * ( )'.split()
text_btn = button.get_label()
if text_btn == 'DEL':
input_text = self.input_box.get_text()
new_text = ''
for i in xrange(0, len(input_text) - 1):
new_text += input_text[i]
self.input_box.set_text(new_text)
elif text_btn == 'AC':
self.input_box.set_text('')
self.output_box.set_text('0.')
elif text_btn == '=':
input_text = self.input_box.get_text()
input_text = input_text.replace('÷', '/')
input_text = input_text.replace('x', '*')
if '%' in input_text:
for i in xrange(0, input_text.count('%')):
index = input_text.index('%')
number = ''
for i in xrange(index, 0, -1):
if input_text[i - 1] in operators:
break
else:
number += input_text[i - 1]
search = reverse(number) + '%'
replace = str(float(number) / 100)
input_text = input_text.replace(search, replace)
self.output_box.set_text(eval_str(input_text) + '.')
else:
self.input_add_text(text_btn)