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Calculator.py
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Calculator.py
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import tkinter
from tkinter import ttk
import keyboard
import math
from screeninfo import get_monitors
import datetime
def handle_focus(event):
if event.widget == root:
root.focus_set()
calcInput.userInputEntry.focus_set()
global screenWidth, screenHeight
root = tkinter.Tk()
screenInfo = get_monitors()[0]
screenWidth = screenInfo.width
screenHeight = screenInfo.height
print(screenWidth, screenHeight)
root.title("Calculator")
root.geometry("%sx67+%s+%s" % (screenWidth, screenWidth, screenHeight-40))
root.resizable(False, False)
root.wm_attributes('-type', 'splash')
root.attributes("-topmost", True)
global histFilename
histFilename = 'calculatorHistory.txt'
class CalculatorMain:
def __init__(self, main):
self.magicFrame = tkinter.Frame(main) # all the other grid elements (in column 0) are relative to this one so by giving it monitor width, the other frames have it too
self.magicFrame.config(height=0, width=screenWidth)
self.magicFrame.grid(row=0, column=0, sticky="WE")
# self.mathFunctionsFrame = tkinter.Frame(main)
# self.mathFunctionsFrame.config(height=80, bg="red")
# self.mathFunctionsFrame.grid(row=1, column=0)
# self.mathFunctionsFrame.grid_remove()
self.numberAndFuncLayoutFrame = tkinter.Frame(main)
self.numberAndFuncLayoutFrame.config(height=20)
self.numberAndFuncLayoutFrame.grid(row=2, column=0, sticky="WE")
self.numberAndFuncLayoutFrame.grid_remove()
self.buttonMenuFrame = tkinter.Frame(main)
self.buttonMenuFrame.config(height=20)
self.buttonMenuFrame.grid(row=3, column=0, sticky="WE")
self.inputFrame = tkinter.Frame(main)
self.inputFrame.config(height=40)
self.inputFrame.grid(row=4, column=0, sticky="WE")
self.inputFrame.focus_set()
def showANDhide(self, main, event=None):
if 'normal' == main.state():
main.withdraw()
else:
main.deiconify()
main.after(1, lambda: main.focus_force())
# calcInput.userInputEntry.focus()
class CalculatorInput:
def __init__(self, frame):
self.userInputEntry = tkinter.Entry(frame, font=("Helvetica", 20), takefocus=1)
self.userInputEntry.pack(fill=tkinter.BOTH)
self.upAndDownKeyPress = 0
def calculateUserInput(self, event=None):
command = self.userInputEntry.get()
command = command.rstrip('\n')
try:
result = eval(command)
except:
result = "error"
self.addToHistory(command, result)
self.userInputEntry.delete(0, tkinter.END)
self.userInputEntry.insert(0, result)
self.upAndDownKeyPress = 0
def clearUserInput(self):
self.userInputEntry.delete(0, tkinter.END)
def clearLastInputedChar(self):
get = self.userInputEntry.get()[:-1]
self.userInputEntry.delete(0, tkinter.END)
self.userInputEntry.insert(0, get)
def addToHistory(self, command, result):
try:
file = open(histFilename, 'x')
except FileExistsError:
file = open(histFilename, 'a')
writeMsg = "DATE: " + str(datetime.datetime.now())+" "+command + " = " + str(result)
file.write(writeMsg)
file.write('\n')
file.close()
try:
if calcHistoryMenu.window.winfo_exists():
calcHistoryMenu.insertNewLine(writeMsg)
except AttributeError or tkinter.TclError:
pass
def traverseHistoryUpDown(self, event, key):
if key == 'up':
self.upAndDownKeyPress += 1
if key == 'down':
self.upAndDownKeyPress -= 1
if self.upAndDownKeyPress <= 0:
self.userInputEntry.delete(0, tkinter.END)
self.upAndDownKeyPress = 0
return
file = open(histFilename, 'r')
lines = file.read().splitlines()
if self.upAndDownKeyPress >= len(lines):
self.upAndDownKeyPress = len(lines)
line = lines[-1*self.upAndDownKeyPress]
line = line[40:] # remove everything except the initial command
line = line.split('=', 1)[0]
line = ''.join(line.split())
self.userInputEntry.delete(0, tkinter.END)
self.userInputEntry.insert(0, line)
class CalculatorButtonMenu:
def __init__(self, frame, main):
self.btnEquals = tkinter.Button(frame, text="=", command=lambda: calcInput.calculateUserInput())
self.btnEquals.pack(side="left")
self.numberLayoutPopUp = tkinter.Button(frame, text="🠕", command=lambda: self.popUpMoreFuncFrame(main))
self.numberLayoutPopUp.pack(side="left")
self.btnClear = tkinter.Button(frame, text="C", command=lambda: calcInput.clearUserInput())
self.btnClear.pack(side="left")
self.btnDot = tkinter.Button(frame, text=".", command=lambda: calcNumberAndFuncLayout.insertInUserInputEntry(self.btnDot.cget('text')))
self.btnPlus = tkinter.Button(frame, text="+", command=lambda: calcNumberAndFuncLayout.insertInUserInputEntry(self.btnPlus.cget('text')))
self.btnMinus = tkinter.Button(frame, text="-", command=lambda: calcNumberAndFuncLayout.insertInUserInputEntry(self.btnMinus.cget('text')))
self.btnMultiply = tkinter.Button(frame, text="*", command=lambda: calcNumberAndFuncLayout.insertInUserInputEntry(self.btnMultiply.cget('text')))
self.btnDivide = tkinter.Button(frame, text="/", command=lambda: calcNumberAndFuncLayout.insertInUserInputEntry(self.btnDivide.cget('text')))
self.btnComma = tkinter.Button(frame, text=",", command=lambda: calcNumberAndFuncLayout.insertInUserInputEntry(self.btnComma.cget('text')))
self.exitButton = tkinter.Button(frame, text="x", command=lambda: self.closeMainWindow(main))
self.exitButton.pack(side="right")
self.histViewButton = tkinter.Button(frame, text="History", command=lambda: self.viewCalcHistory(main))
self.histViewButton.pack(side="right")
self.mathLayoutPopUp = tkinter.Button(frame, text="🠕🠕", command=lambda: calcNumberAndFuncLayout.mathFunctionsPopUp(main))
self.mathLayoutPopUp.pack(side="right")
def closeMainWindow(self, main):
main.destroy()
def viewCalcHistory(self, main):
try:
if calcHistoryMenu.window.winfo_exists():
calcHistoryMenu.destroyWindow()
self.histViewButton["text"] = "History"
else:
calcHistoryMenu.createWindow(main)
self.histViewButton["text"] = "Close History"
except AttributeError:
calcHistoryMenu.createWindow(main)
self.histViewButton["text"] = "Close History"
def popUpMoreFuncFrame(self, main):
if calc.numberAndFuncLayoutFrame.winfo_ismapped():
calc.numberAndFuncLayoutFrame.grid_remove()
main.geometry("%sx67+%s+%s" % (screenWidth, screenWidth, screenHeight-40))
self.btnDot.pack_forget()
self.btnPlus.pack_forget()
self.btnMinus.pack_forget()
self.btnMultiply.pack_forget()
self.btnDivide.pack_forget()
self.btnComma.pack_forget()
else:
main.geometry("%sx98+%s+%s" % (screenWidth, screenWidth, screenHeight-40))
calc.numberAndFuncLayoutFrame.grid()
self.btnDot.pack(side="left")
self.btnPlus.pack(side="left")
self.btnMinus.pack(side="left")
self.btnMultiply.pack(side="left")
self.btnDivide.pack(side="left")
self.btnComma.pack(side="left")
self.btnClear.pack_forget()
self.btnClear.pack(side="left")
class CalculatorNumberAndFunctionLayout:
def __init__(self, frame):
self.btn1 = tkinter.Button(frame, text="1", command=lambda: self.insertInUserInputEntry(self.btn1.cget('text')))
self.btn1.pack(side="left")
self.btn2 = tkinter.Button(frame, text="2", command=lambda: self.insertInUserInputEntry(self.btn2.cget('text')))
self.btn2.pack(side="left")
self.btne = tkinter.Button(frame, text="e", command=lambda: self.insertInUserInputEntry('math.e'))
self.btne.pack(side="left")
self.btn3 = tkinter.Button(frame, text="3", command=lambda: self.insertInUserInputEntry(self.btn3.cget('text')))
self.btn3.pack(side="left")
self.btnpi = tkinter.Button(frame, text="π", command=lambda: self.insertInUserInputEntry('math.pi'))
self.btnpi.pack(side="left")
self.btn4 = tkinter.Button(frame, text="4", command=lambda: self.insertInUserInputEntry(self.btn4.cget('text')))
self.btn4.pack(side="left")
self.btn5 = tkinter.Button(frame, text="5", command=lambda: self.insertInUserInputEntry(self.btn5.cget('text')))
self.btn5.pack(side="left")
self.btn6 = tkinter.Button(frame, text="6", command=lambda: self.insertInUserInputEntry(self.btn6.cget('text')))
self.btn6.pack(side="left")
self.btne = tkinter.Button(frame, text="𝜏", command=lambda: self.insertInUserInputEntry('math.tau'))
self.btne.pack(side="left")
self.btn7 = tkinter.Button(frame, text="7", command=lambda: self.insertInUserInputEntry(self.btn7.cget('text')))
self.btn7.pack(side="left")
self.btn8 = tkinter.Button(frame, text="8", command=lambda: self.insertInUserInputEntry(self.btn8.cget('text')))
self.btn8.pack(side="left")
self.btn9 = tkinter.Button(frame, text="9", command=lambda: self.insertInUserInputEntry(self.btn9.cget('text')))
self.btn9.pack(side="left")
self.btn0 = tkinter.Button(frame, text="0", command=lambda: self.insertInUserInputEntry(self.btn0.cget('text')))
self.btn0.pack(side="left")
self.btnClearOne = tkinter.Button(frame, text="<-", command=lambda: calcInput.clearLastInputedChar())
self.btnClearOne.pack(side="left")
self.optFrame = tkinter.Frame(frame)
self.optPossibilitiesValues = ["combination(n,k)", "permutation(n,k)", "factorial(x)"]
self.optPossibilities = ttk.Combobox(self.optFrame, values=self.optPossibilitiesValues)
self.optPossibilities.state = (['disabled'])
self.optPossibilities.set('possibilities')
self.optPossibilities.bind("<Key>", lambda e: "break")
self.optPossibilities.bind("<<ComboboxSelected>>", lambda event: self.detectMathFunction(event, self.optPossibilities.get()))
self.optPossibilities.pack(side="right")
self.optTrigonometryValues = ["sin(x)", "cos(x)", "tan(x)", "asin(x)", "acos(x)", "atan(x)"]
self.optTrigonometry = ttk.Combobox(self.optFrame, values=self.optTrigonometryValues)
self.optTrigonometry.state = (['disabled'])
self.optTrigonometry.set('trigonometry')
self.optTrigonometry.bind("<Key>", lambda e: "break")
self.optTrigonometry.bind("<<ComboboxSelected>>", lambda event: self.detectMathFunction(event, self.optTrigonometry.get()))
self.optTrigonometry.pack(side="right")
self.optAngularConversionValues = ["radians", "degrees"]
self.optAngularConversion = ttk.Combobox(self.optFrame, values=self.optAngularConversionValues)
self.optAngularConversion.state = (['disabled'])
self.optAngularConversion.set('angular conversion')
self.optAngularConversion.bind("<Key>", lambda e: "break")
self.optAngularConversion.bind("<<ComboboxSelected>>", lambda event: self.detectMathFunction(event, self.optAngularConversion.get()))
self.optAngularConversion.pack(side="right")
self.optHyperbolicValues = ["sinh(x)", "cosh(x)", "tanh(x)", "asinh(x)", "acosh(x)", "atanh(x)"]
self.optHyperbolic = ttk.Combobox(self.optFrame, values=self.optHyperbolicValues)
self.optHyperbolic.state = (['disabled'])
self.optHyperbolic.set('hyperbolic')
self.optHyperbolic.bind("<Key>", lambda e: "break")
self.optHyperbolic.bind("<<ComboboxSelected>>", lambda event: self.detectMathFunction(event, self.optHyperbolic.get()))
self.optHyperbolic.pack(side="right")
self.optOtherValues = ["pow(x, y)", "sqrt(x)", "log(x, base)"]
self.optOther = ttk.Combobox(self.optFrame, values=self.optOtherValues)
self.optOther.state = (['disabled'])
self.optOther.set('other')
self.optOther.bind("<Key>", lambda e: "break")
self.optOther.bind("<<ComboboxSelected>>", lambda event: self.detectMathFunction(event, self.optOther.get()))
self.optOther.pack(side="right")
self.selectionCommandTable = {
"combination(n,k)": "math.comb()",
"permutation(n,k)": "math.perm()",
"factorial(x)": "math.factorial()",
"sin(x)": "math.sin()",
"cos(x)": "math.cos()",
"tan(x)": "math.tan()",
"asin(x)": "math.asin()",
"acos(x)": "math.acos()",
"atan(x)": "math.atan()",
"radians": "math.radians()",
"degrees": "math.degrees()",
"sinh(x)": "math.sinh()",
"cosh(x)": "math.cosh()",
"tanh(x)": "math.tanh()",
"asinh(x)": "math.asinh()",
"acosh(x)": "math.acosh()",
"atanh(x)": "math.atanh()",
"pow(x, y)": "math.pow()",
"sqrt(x)": "math.sqrt()",
"log(x, base)": "math.log()"
}
def insertInUserInputEntry(self, char):
self.optOther.set('other')
self.optHyperbolic.set('hyperbolic')
self.optAngularConversion.set('angular conversion')
self.optTrigonometry.set('trigonometry')
self.optPossibilities.set('possibilities')
calcInput.userInputEntry.insert(calcInput.userInputEntry.index("insert"), char)
def detectMathFunction(self, event, selection):
self.insertMathFunctionInEntry(self.selectionCommandTable[selection])
def insertMathFunctionInEntry(self, command):
entryMsg = calcInput.userInputEntry.get()
isDigitBool = 0
commaCounter = 0
for i in entryMsg: # also add , if user didnt
if i.isnumeric():
isDigitBool = 1
if isDigitBool:
if i == ',':
commaCounter += 1
if commaCounter == 0:
prev = ''
for i in enumerate(entryMsg):
if i[1].isnumeric() or i[1] == '.':
prev = i[1]
elif prev.isnumeric():
entryMsg = entryMsg[:i[0]] + ',' + entryMsg[i[0]+1:]
else:
prev = i[1]
entryMsg = command[:-1] + entryMsg + ")"
calcInput.userInputEntry.delete(0, tkinter.END)
calcInput.userInputEntry.insert(0, entryMsg)
def mathFunctionsPopUp(self, main):
if calc.numberAndFuncLayoutFrame.winfo_ismapped():
pass
else:
calc.numberAndFuncLayoutFrame.grid()
main.geometry("%sx98+%s+%s" % (screenWidth, screenWidth, screenHeight-40))
if self.optFrame.winfo_ismapped():
self.optFrame.pack_forget()
else:
self.optFrame.pack(side="right")
class CalculatorHistoryMenu:
def createWindow(self, main):
self.window = tkinter.Toplevel(main)
self.window.config(bg="grey")
self.window.geometry("%sx%s+%s+0" % (screenWidth, screenHeight, screenWidth))
self.window.protocol("WM_DELETE_WINDOW", self.onClose)
self.histText = tkinter.Text(self.window)
self.histText.config(bg="grey", font=("Helvetica", 15), height=screenHeight-(screenHeight-main.winfo_screenheight()))
self.histText.pack(side="top", anchor="center", fill=tkinter.BOTH)
self.histText.bind("<Key>", lambda e: "break") # so that u cant edit
self.writeHist()
def destroyWindow(self):
self.window.destroy()
def writeHist(self):
file = open(histFilename, "r")
lines = file.readlines()
for line in lines:
self.histText.insert(1.0, line)
file.close()
def insertNewLine(self, message):
self.histText.insert(1.0, "%s\n" % (message))
def onClose(self):
self.window.destroy()
calcButtonMenu.histViewButton["text"] = "History"
global calc, calcButtonMenu, calcInput, calcNumberAndFuncLayout, calcHistoryMenu
calc = CalculatorMain(root)
calcInput = CalculatorInput(calc.inputFrame)
calcHistoryMenu = CalculatorHistoryMenu()
calcButtonMenu = CalculatorButtonMenu(calc.buttonMenuFrame, root)
calcNumberAndFuncLayout = CalculatorNumberAndFunctionLayout(calc.numberAndFuncLayoutFrame)
keyboard.add_hotkey("ctrl+space", lambda: calc.showANDhide(root))
root.bind('<Return>', lambda event: calcInput.calculateUserInput())
calcInput.userInputEntry.bind("<Up>", lambda event, key="up": calcInput.traverseHistoryUpDown(event, key))
calcInput.userInputEntry.bind("<Down>", lambda event, key="down": calcInput.traverseHistoryUpDown(event, key))
calcInput.userInputEntry.bind("<Escape>", lambda arg: calcInput.clearUserInput())
root.bind("<FocusIn>", handle_focus)
root.mainloop()