pfur

# -*- coding: utf-8 -*-

import sip, sys
from PyQt4.QtCore import SIGNAL
from PyQt4.QtGui import QDialog, QApplication, QPushButton, QLineEdit, QFormLayout, QLabel, QComboBox

class Form(QDialog):
    def __init__(self, parent=None):
        super(Form, self).__init__(parent)

        self.label1 = QLabel("A:")

        self.firstNumber = QLineEdit()

        self.label2 = QLabel(u"Система счисления A:")

        self.firstRadix = QComboBox()
        self.firstRadix.addItem("2")
        self.firstRadix.addItem("8")
        self.firstRadix.addItem("10")
        self.firstRadix.addItem("16")

        self.label3 = QLabel("A:")

        self.secondNumber = QLineEdit()

        self.label4 = QLabel(u"Система счисления B:")

        self.secondRadix = QComboBox()
        self.secondRadix.addItem("2")
        self.secondRadix.addItem("8")
        self.secondRadix.addItem("10")
        self.secondRadix.addItem("16")

        self.label5 = QLabel(u"Операция:")

        self.operation = QComboBox()
        self.operation.addItem("+")
        self.operation.addItem("-")
        self.operation.addItem("*")
        self.operation.addItem("/")
        self.operation.addItem("or")
        self.operation.addItem("and")
        self.operation.addItem("xor")


        self.label6 = QLabel(u"Система счисления резульатата:")
        self.resultRadix = QComboBox()
        self.resultRadix.addItem("2")
        self.resultRadix.addItem("8")
        self.resultRadix.addItem("10")
        self.resultRadix.addItem("16")

        self.pb = QPushButton(u"Расчёт")

        self.result = QLineEdit()

        layout = QFormLayout()
        layout.addWidget(self.label1)
        layout.addWidget(self.firstNumber)
        layout.addWidget(self.label2)
        layout.addWidget(self.firstRadix)
        layout.addWidget(self.label3)
        layout.addWidget(self.secondNumber)
        layout.addWidget(self.label4)
        layout.addWidget(self.secondRadix)
        layout.addWidget(self.label5)
        layout.addWidget(self.operation)
        layout.addWidget(self.label6)
        layout.addWidget(self.resultRadix)
        layout.addWidget(self.pb)
        layout.addWidget(self.result)

        self.setLayout(layout)
        self.connect(self.pb, SIGNAL("clicked()"),self.button_click)
        self.resize(320, 320);
        self.setWindowTitle("PFUR")

    def strb(self, n, base):
        t = "0123456789ABCDEF"
        res = ""
        while n:
            res += t[n % base]
            n //= base
        return res[::-1]

    def button_click(self):
        rad1 = int(self.firstRadix.currentText())
        rad2 = int(self.secondRadix.currentText())
        rad3 = int(self.resultRadix.currentText())
        try:
            if self.operation.currentText() == '+':
                self.result.setText(self.strb(int(str(self.firstNumber.text()), rad1) + int(str(self.secondNumber.text()), rad2), rad3))
            if self.operation.currentText() == '*':
                self.result.setText(self.strb(int(str(self.firstNumber.text()), rad1) * int(str(self.secondNumber.text()), rad2), rad3))
            if self.operation.currentText() == '/':
                self.result.setText(self.strb(int(str(self.firstNumber.text()), rad1) / int(str(self.secondNumber.text()), rad2), rad3))
            if self.operation.currentText() == '-':
                self.result.setText(self.strb(int(str(self.firstNumber.text()), rad1) - int(str(self.secondNumber.text()), rad2), rad3))
            if self.operation.currentText() == 'or':
                self.result.setText(self.strb(int(str(self.firstNumber.text()), rad1) | int(str(self.secondNumber.text()), rad2), rad3))
            if self.operation.currentText() == 'xor':
                self.result.setText(self.strb(int(str(self.firstNumber.text()), rad1) ^ int(str(self.secondNumber.text()), rad2), rad3))
            if self.operation.currentText() == 'and':
                self.result.setText(self.strb(int(str(self.firstNumber.text()), rad1) & int(str(self.secondNumber.text()), rad2), rad3))

        except ZeroDivisionError:
            self.result.setText(u"Деление на 0 запрещено")

        except ValueError:
            f = str(self.firstNumber.text())
            s = str(self.secondNumber.text())
            if(len(f) == 0 and len(s) == 0):
                self.result.setText(u"Введите необходимые данные в поля для ввода")
            elif(len(f) == 0):
                try:
                    self.result.setText(self.strb(int(s, rad2), rad3))
                except ValueError:
                    self.result.setText(u"Введённые данные не корректны")
            else:
                try:
                    self.result.setText(self.strb(int(f, rad1), rad3))
                except ValueError:
                    self.result.setText(u"Введённые данные не корректны")

app = QApplication(sys.argv)
form = Form()
form.show()
app.exec_()