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calculator.py
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import sys
from math import *
from PyQt4 import QtGui, QtCore
from PyQt4.QtCore import Qt
num = 0.0
newNum = 0.0
sumAll = 0.0
operator = ""
opVar = False
sumIt = 0
check=0
class Main(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.initUI()
def initUI(self):
self.line = QtGui.QLineEdit(self) #Text Box Configuration
self.line.setReadOnly(True)
self.line.setAlignment(Qt.AlignRight)
self.line.setGeometry(10,5,480,45)
self.statusBar().showMessage(' Aryan\'s Calculator')
zero = QtGui.QPushButton("0",self)
zero.setGeometry(70,330,60,70)
one = QtGui.QPushButton("1",self)
one.setGeometry(10,260,60,70)
two = QtGui.QPushButton("2",self)
two.setGeometry(70,260,60,70)
three = QtGui.QPushButton("3",self)
three.setGeometry(130,260,60,70)
four = QtGui.QPushButton("4",self)
four.setGeometry(10,190,60,70)
five = QtGui.QPushButton("5",self)
five.setGeometry(70,190,60,70)
six = QtGui.QPushButton("6",self)
six.setGeometry(130,190,60,70)
seven = QtGui.QPushButton("7",self)
seven.setGeometry(10,120,60,70)
eight = QtGui.QPushButton("8",self)
eight.setGeometry(70,120,60,70)
nine = QtGui.QPushButton("9",self)
nine.setGeometry(130,120,60,70)
switch = QtGui.QPushButton("+/-",self)
switch.setGeometry(10,330,60,70)
switch.clicked.connect(self.Switch)
point = QtGui.QPushButton(".",self)
point.setGeometry(130,330,60,70)
point.clicked.connect(self.pointClicked)
div = QtGui.QPushButton("/",self)
div.setGeometry(190,120,60,70)
multiply = QtGui.QPushButton("*",self)
multiply.setGeometry(190,190,60,70)
mod=QtGui.QPushButton("%",self)
mod.setGeometry(430,50,60,70)
mod.clicked.connect(self.Percent)
minus = QtGui.QPushButton("-",self)
minus.setGeometry(190,260,60,70)
plus = QtGui.QPushButton("+",self)
plus.setGeometry(190,330,60,70)
sqrt = QtGui.QPushButton("√",self)
sqrt.setGeometry(250,190,60,70)
sqrt.clicked.connect(self.Sqrt)
squared = QtGui.QPushButton("x²",self)
squared.setGeometry(250,120,60,70)
squared.clicked.connect(self.Squared)
fact=QtGui.QPushButton("n!",self)
fact.setGeometry(250,260,80,70)
fact.clicked.connect(self.Fact)
sin=QtGui.QPushButton("sin",self)
sin.setGeometry(310,260,60,70)
sin.clicked.connect(self.trig)
cos=QtGui.QPushButton("cos",self)
cos.setGeometry(310,190,60,70)
cos.clicked.connect(self.trig)
tan=QtGui.QPushButton("tan",self)
tan.setGeometry(310,120,60,70)
tan.clicked.connect(self.trig)
asin=QtGui.QPushButton("asin",self)
asin.setGeometry(370,260,60,70)
asin.clicked.connect(self.trig)
acos=QtGui.QPushButton("acos",self)
acos.setGeometry(370,190,60,70)
acos.clicked.connect(self.trig)
atan=QtGui.QPushButton("atan",self)
atan.setGeometry(370,120,60,70)
atan.clicked.connect(self.trig)
rad=QtGui.QPushButton("ToRadians",self)
rad.setGeometry(430,190,60,70)
rad.clicked.connect(self.Conversion)
deg=QtGui.QPushButton("ToDegrees",self)
deg.setGeometry(430,120,60,70)
deg.clicked.connect(self.Conversion)
exp=QtGui.QPushButton("e",self)
exp.setGeometry(310,50,60,70)
exp.clicked.connect(self.Exp)
pi=QtGui.QPushButton("pi",self)
pi.setGeometry(370,50,60,70)
pi.clicked.connect(self.Pi)
power=QtGui.QPushButton("^",self)
power.setGeometry(250,50,60,70)
inv=QtGui.QPushButton("1/x",self)
inv.setGeometry(430,260,60,70)
inv.clicked.connect(self.Inverse)
equal = QtGui.QPushButton("=",self)
equal.setGeometry(250,330,120,70)
equal.clicked.connect(self.Equal)
equal.setStyleSheet("color:white;background-color:#222222;font-size:22px")
ln = QtGui.QPushButton("ln",self)
ln.setGeometry(370,330,60,70)
ln.clicked.connect(self.Log)
log = QtGui.QPushButton("log",self)
log.setGeometry(430,330,60,70)
log.clicked.connect(self.Log10)
c = QtGui.QPushButton("C",self)
c.setGeometry(70,50,60,70)
c.clicked.connect(self.C)
c.setStyleSheet("font-size:20px;color:white;background-color:#333333;")
ce = QtGui.QPushButton("CE",self)
ce.setGeometry(10,50,60,70)
ce.clicked.connect(self.CE)
ce.setStyleSheet("font-size:20px;color:white;background-color:#333333;")
back = QtGui.QPushButton("Back",self)
back.setGeometry(130,50,120,70)
back.clicked.connect(self.Back)
back.setStyleSheet("font-size:20px;color:white;background-color:#333333;")
nums = [zero,one,two,three,four,five,six,seven,eight,nine]
ops = [back,c,ce,div,multiply,minus,plus,power,exp,pi,deg,rad,equal]
trig=[sin,cos,tan,asin,acos,atan]
rest = [switch,squared,sqrt,fact,point,ln,log,inv,mod]
for i in nums:
i.setStyleSheet("color:red;background-color:black;font-size:12px")
i.clicked.connect(self.Nums)
for i in ops[3:12]:
i.setStyleSheet("color:green;background-color:black;font-size:12px")
for i in trig:
i.setStyleSheet("color:purple;background-color:black;")
for i in rest:
i.setStyleSheet("color:blue;background-color:black;")
for i in ops[3:8]:
i.clicked.connect(self.Operator)
self.setGeometry(550,280,500,420)
self.setFixedSize(500,420) #Window Configurations
self.setWindowTitle("Calculator")
self.setWindowIcon(QtGui.QIcon("calculator.png"))
self.show()
def Nums(self):
global num
global newNum
global opVar
global check
if check==1:
self.line.clear()
sender = self.sender()
newNum = int(sender.text())
setNum = str(newNum)
self.statusBar().showMessage(sender.text() + ' was pressed')
if opVar == False:
self.line.setText(self.line.text() + setNum)
else:
self.line.setText(setNum)
opVar = False
check=0
def pointClicked(self):
global opVar
if "." not in self.line.text():
self.line.setText(self.line.text() + ".")
def Switch(self):
global num
num = float(self.line.text())
num = -num
numStr = str(num)
self.line.setText(numStr)
def Operator(self):
global num
global opVar
global operator
global sumIt
sumIt += 1
if sumIt > 1:
self.Equal()
sumIt=1
num = self.line.text()
sender = self.sender()
operator = sender.text()
opVar = True
def Equal(self):
global num
global newNum
global sumAll
global operator
global opVar
global sumIt
global check
newNum = self.line.text()
sender=self.sender()
if sender.text()=="=":
sumIt=0
if opVar==True:
self.C()
self.statusBar().showMessage(' Consecutive operators are not allowed')
self.line.setText("Syntax Error! Press C")
else:
if operator == "+":
sumAll = float(num) + float(newNum)
elif operator == "-":
sumAll = float(num) - float(newNum)
elif operator == "/":
sumAll = float(num) / float(newNum)
elif operator == "*":
sumAll = float(num) * float(newNum)
elif operator=="^":
sumAll=(pow(float(num),float(newNum)))
self.line.setText(str(sumAll))
opVar = False
sumIt=0
check=1
def C(self):
global newNum
global sumAll
global operator
global num
global sumIt
self.line.clear()
num = 0.0
newNum = 0.0
sumAll = 0.0
operator = ""
sumIt=0
opVar=False
def CE(self):
self.line.clear()
def Back(self):
self.line.backspace()
def Sqrt(self):
global num
global check
num = float(self.line.text())
if num<0:
self.statusBar().showMessage(str(num) + ' can\'t be negative ')
self.line.setText("Math Error")
else:
n = sqrt(num)
num = n
self.line.setText(str(num))
check=1
def Squared(self):
global num
global check
num = float(self.line.text())
n = pow(num,2)
self.line.setText(str(n))
check=1
def Percent(self):
global num
global check
num=float(self.line.text())
n=num/100
self.line.setText(str(n))
check=1
def Log(self):
global num
global check
num=float(self.line.text())
if num<=0:
self.line.setText("Math Error")
self.statusBar().showMessage('Argument must be greater than 0')
else:
n=log(num)
self.line.setText(str(n))
check=1
def Log10(self):
global num
global check
num=float(self.line.text())
if num<=0:
self.line.setText("Math Error")
self.statusBar().showMessage('Argument must be greater than 0')
else:
n=log10(num)
self.line.setText(str(n))
check=1
def Fact(self):
global num
global check
num=float(self.line.text())
n=int(num)
if (num-n)>0 or num<0:
self.line.setText("Math Error")
self.statusBar().showMessage(str(num) + ' can\'t be non-integer')
else:
f=1
i=1
while(num>=1):
f=f*i
i=i+1
num=num-1
self.line.setText(str(f))
check=1
def Exp(self):
global check
n=exp(1)
self.line.setText(str(n))
check=1
def Inverse(self):
global check
global num
num=float(self.line.text())
if num==0:
self.line.setText("Math Error")
self.statusBar().showMessage('Argument can\'t be 0 as value will tend to infinity')
else:
n=1/num
self.line.setText(str(n))
check=1
def Pi(self):
global check
n=atan(1)*4
self.line.setText(str(n))
check=1
def trig(self):
global num
global sumAll
global operator
global check
num = self.line.text()
sender = self.sender()
operator = sender.text()
if operator=="sin":
sumAll=float(sin(float(num)))
self.line.setText(str(sumAll))
elif operator=="cos":
sumAll=float(cos(float(num)))
self.line.setText(str(sumAll))
elif operator=="tan":
if float(num)==2*atan(1):
self.line.setText("Math Error")
self.statusBar().showMessage('Argument can\'t be 90 degrees as value =infinity')
else:
sumAll=float(tan((float(num))))
self.line.setText(str(sumAll))
elif operator=="atan":
sumAll=float(atan(float(num)))
self.line.setText(str(sumAll))
elif operator=="asin":
if float(num)<-1 or float(num)>1:
self.line.setText("Math Error")
self.statusBar().showMessage('Argument must be between 1 and -1')
else:
sumAll=float(asin(float(num)))
self.line.setText(str(sumAll))
elif operator=="acos":
if float(num)<-1 or float(num)>1:
self.line.setText("Math Error")
self.statusBar().showMessage('Argument must be between 1 and -1')
else:
sumAll=float(acos(float(num)))
self.line.setText(str(sumAll))
check=1
def Conversion(self):
global num
global sumAll
global operator
global check
num = float(self.line.text())
sender = self.sender()
operator = sender.text()
if operator=="ToRadians":
sumAll=float(radians(num))
elif operator=="ToDegrees":
sumAll=float(degrees(num))
self.line.setText(str(sumAll))
check=1
def main():
app = QtGui.QApplication(sys.argv)
main= Main()
main.show()
sys.exit(app.exec_())
if __name__ == "__main__":
main()