Morsecode.pyw

# import all functions from the tkinter
from tkinter import *

# import messagebox class from tkinter
from tkinter import messagebox

# Create a GUI window
root = Tk()

# create a global variables
variable1 = StringVar(root)
variable2 = StringVar(root)

# initialise the variables
variable1.set("select language")
variable2.set("select language")

'''
VARIABLE KEY
'cipher' -> 'stores the morse translated form of the english string'
'decipher' -> 'stores the english translated form of the morse string'
'citext' -> 'stores morse code of a single character'
'i' -> 'keeps count of the spaces between morse characters'
'message' -> 'stores the string to be encoded or decoded'
'''

# Dictionary representing the morse code chart
MORSE_CODE_DICT = {'A': '.-', 'B': '-...', 'C': '-.-.', 'D': '-..', 'E': '.', 'F': '..-.', 'G': '--.', 'H': '....',
               'I': '..', 'J': '.---', 'K': '-.-', 'L': '.-..', 'M': '--', 'N': '-.', 'O': '---', 'P': '.--.',
               'Q': '--.-', 'R': '.-.', 'S': '...', 'T': '-', 'U': '..-', 'V': '...-', 'W': '.--', 'X': '-..-',
               'Y': '-.--', 'Z': '--..', '1': '.----', '2': '..---', '3': '...--', '4': '....-', '5': '.....',
               '6': '-....', '7': '--...', '8': '---..', '9': '----.', '0': '-----', ', ': '--..--', '.': '.-.-.-',
               '?': '..--..', '/': '-..-.', '-': '-....-', '(': '-.--.', ')': '-.--.-', ' ': '/', '!': '-.-.--',
               '@': '.--.-.', '&': '.-...','a': '.-','b': '-...', 'c': '-.-.', 'd': '-..','e': '.','f': '..-.',
               'g': '--.','h': '....','i': '..','j': '.---','k': '-.-','l': '.-..','m': '--','n': '-.','o': '---','p': '.--.',
               'q': '--.-','r': '.-.','s': '...','t': '-','u': '..-','v': '...-','w': '.--','x': '-..-','y': '-.--','z': '--..',}

# Function to clear both the text areas
def clearAll() :
	# whole content of text area is deleted
	language1_field.delete(1.0, END)
	language2_field.delete(1.0, END)

# Function to perform coversion from one
# language to another
def convert() :

	# get a whole input content from text box
	# ignoring \n from the text box content
	message = language1_field.get("1.0", "end")[:-1]

	# get the content from variable1 and 2, check their values
	if variable1.get() == variable2.get() :
		
		# show the error message
		messagebox.showerror("Can't Be same Language")
		return

	elif variable1.get() == "English" and variable2.get() == "Morse" :

		# function call
		rslt = encrypt(message)

	elif variable1.get() == "Morse" and variable2.get() == "English" :

		# function call
		rslt = decrypt(message)

	else :
		
		# show the error message
		messagebox.showerror("please choose valid language code..")
		return
	
	# insert content into text area
	# from rslt variable
	language2_field.insert('end -1 chars', rslt)
	
		
# Function to encrypt the string
# according to the morse code chart
def encrypt(message):
	cipher = ''
	for letter in message:
		if letter != ' ':

			# Looks up the dictionary and adds the
			# corresponding morse code
			# along with a space to separate
			# morse codes for different characters
			cipher += MORSE_CODE_DICT[letter] + ' '
		else:
			# 1 space indicates different characters
			# and 2 indicates different words
			cipher += ' '

	return cipher

# Function to decrypt the string
# from morse to english
def decrypt(message):

	# extra space added at the end to access the
	# last morse code
	message += ' '

	decipher = ''
	citext = ''
	for letter in message:

		# checks for space
		if (letter != ' '):

			# counter to keep track of space
			i = 0

			# storing morse code of a single character
			citext += letter

		# in case of space
		else:
			# if i = 1 that indicates a new character
			i += 1

			# if i = 2 that indicates a new word
			if i == 2 :

				# adding space to separate words
				decipher += ' '
			else:

				# accessing the keys using their values
				# (reverse of encryption)
				decipher += list(MORSE_CODE_DICT.keys())[
							list(MORSE_CODE_DICT .values()).index(citext)]
				citext = ''

	return decipher


# Driver code
if __name__ == "__main__" :
	
	# Set the background colour of GUI window
	root.configure(background = 'light green')
	
	# Set the configuration of GUI window (WidthxHeight)
	root.geometry("400x350")

	# set the name of tkinter GUI window
	root.title("Translator")
	
	# Create Welcome to Morse Code Translator label
	headlabel = Label(root, text = 'Welcome to Morse Code Translator',
							fg = 'black', bg = "grey")

	# Create a "One Language " label
	label1 = Label(root, text = "One Language ",
				fg = 'black', bg = 'orange')
	
	# Create a "From Language " label
	label2 = Label(root, text = "From Language",
				fg = 'black', bg = 'orange')
	
	# Create a "To Language " label
	label3 = Label(root, text = "To Language ",
				fg = 'black', bg = 'orange')

	# Create a "Converted Language " label
	label4 = Label(root, text = "Converted Language ",
				fg = 'black', bg = 'orange')

	# grid method is used for placing
	# the widgets at respective positions
	# in table like structure .
	headlabel.grid(row = 0, column = 1)
	label1.grid(row = 1, column = 0)
	label2.grid(row = 2, column = 0)
	label3.grid(row = 3, column = 0)
	label4.grid(row = 5, column = 0)
	
	# Create a text area box
	# for filling or typing the information.
	language1_field = Text(root, height = 5, width = 25,
									font = "arial 13")
	language2_field = Text(root, height = 5, width = 25,
									font = "arial 13")
		
	# padx keyword argument used to set padding along x-axis .
	language1_field.grid(row = 1, column = 1, padx = 10)
	language2_field.grid(row = 5, column = 1, padx = 10)

	# list of language codes
	languageCode_list = ["English", "Morse"]

	# create a drop down menu using OptionMenu function
	# which takes window name, variable and choices as
	# an argument. use * before the name of the list,
	# to unpack the values
	FromLanguage_option = OptionMenu(root, variable1, *languageCode_list)
	ToLanguage_option = OptionMenu(root, variable2, *languageCode_list)
	
	FromLanguage_option.grid(row = 2, column = 1, ipadx = 10)
	ToLanguage_option.grid(row = 3, column = 1, ipadx = 10)
	
	# Create a Convert Button and attached
	# with convert function
	button1 = Button(root, text = "Convert", bg = "blue", fg = "black",
								command = convert)
	
	button1.grid(row = 4, column = 1)

	# Create a Clear Button and attached
	# with clearAll function
	button2 = Button(root, text = "Clear", bg = "violet",
					fg = "black", command = clearAll)
	
	button2.grid(row = 6, column = 1)
	
	# Start the GUI
	root.mainloop()