simulator.py

import tkinter as tk
from tkinter import ttk
import time
import threading

# Morse code dictionary
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': '-----', ', ': '--..--', '.': '.-.-.-', '?': '..--..',
    '/': '-..-.', '-': '-....-', '(': '-.--.', ')': '-.--.-'
}


class MorseDecoderApp:
    def __init__(self, root):
        self.root = root
        self.root.title("Morse Code Decoder")
        self.root.geometry("600x400")  # Set initial window size

        self.dot_duration = 200  # milliseconds
        self.dash_duration = self.dot_duration * 3
        self.space_duration = self.dot_duration * 7  # Between words
        self.letter_space_duration = self.dot_duration * 3 # Between letters


        # Input Frame
        self.input_frame = ttk.Frame(root, padding=(10, 10, 10, 10))
        self.input_frame.pack(fill=tk.BOTH, expand=True)

        self.input_label = ttk.Label(self.input_frame, text="Morse Code Input:")
        self.input_label.grid(row=0, column=0, sticky=tk.W)

        self.morse_input = tk.Text(self.input_frame, height=5, width=50)
        self.morse_input.grid(row=1, column=0, columnspan=2, sticky=tk.EW)

        self.decode_button = ttk.Button(self.input_frame, text="Decode", command=self.decode_morse)
        self.decode_button.grid(row=2, column=0, columnspan=2, pady=5)

        # Output Frame
        self.output_frame = ttk.Frame(root, padding=(10, 0, 10, 10))  # Less top padding
        self.output_frame.pack(fill=tk.BOTH, expand=True)

        self.output_label = ttk.Label(self.output_frame, text="Decoded Text:")
        self.output_label.grid(row=0, column=0, sticky=tk.W)

        self.decoded_text = tk.Text(self.output_frame, height=5, width=50, state=tk.DISABLED) # Start disabled
        self.decoded_text.grid(row=1, column=0, columnspan=2, sticky=tk.EW)


        # LED Light Simulation (Basic)
        self.led_frame = ttk.Frame(root, padding=(10, 0, 10, 10)) # Less top padding
        self.led_frame.pack(fill=tk.BOTH, expand=True)
        self.led_label = ttk.Label(self.led_frame, text="LED Output:")
        self.led_label.grid(row=0, column=0, sticky=tk.W)
        self.led = tk.Canvas(self.led_frame, width=50, height=50, bg="white", highlightthickness=0)  # highlightthickness=0 removes border
        self.led.grid(row=1, column=0, columnspan=2, pady=5)  # pady for spacing
        self.led_circle = self.led.create_oval(10, 10, 40, 40, fill="gray", outline="") # outline="" removes the default black outline

        #Status bar at the bottom
        self.status_bar = ttk.Label(root, text="Ready", relief=tk.SUNKEN, anchor=tk.W)
        self.status_bar.pack(side=tk.BOTTOM, fill=tk.X)



        # Configure grid weights for resizing
        self.input_frame.columnconfigure(0, weight=1)
        self.input_frame.columnconfigure(1, weight=1)
        self.input_frame.rowconfigure(1, weight=1)  # Morse Text area expands vertically

        self.output_frame.columnconfigure(0, weight=1)
        self.output_frame.columnconfigure(1, weight=1)
        self.output_frame.rowconfigure(1, weight=1) # Decoded text area expands vertically

        self.led_frame.columnconfigure(0, weight=1)
        self.led_frame.columnconfigure(1, weight=1)


    def decode_morse(self):
        morse_code = self.morse_input.get("1.0", tk.END).strip().upper()  # Get text, remove whitespace, and convert to uppercase
        if not morse_code:
            self.status_bar.config(text="Error: Please enter Morse code.")
            return

        try:
            decoded_text = self.morse_to_text(morse_code)
            self.status_bar.config(text="Decoding...") #Update Status bar
            self.display_led(morse_code)

        except ValueError as e:
            self.decoded_text.config(state=tk.NORMAL)
            self.decoded_text.delete("1.0", tk.END)
            self.decoded_text.insert("1.0", str(e)) #Display error in output text area
            self.decoded_text.config(state=tk.DISABLED)

            self.status_bar.config(text=f"Error: {str(e)}") # Show error in status bar

        except Exception as e: # Catch any other unexpected errors
            self.decoded_text.config(state=tk.NORMAL)
            self.decoded_text.delete("1.0", tk.END)
            self.decoded_text.insert("1.0", "An unexpected error occurred.")
            self.decoded_text.config(state=tk.DISABLED)

            self.status_bar.config(text="An unexpected error occurred.")



    def morse_to_text(self, morse_code):
        # Basic morse to text conversion (doesn't handle invalid codes well)
        morse_code = morse_code.replace("/", " / ") # Add space for word separator
        words = morse_code.split(" / ")
        text = ""
        for word in words:
            letters = word.split()  #Splits into individual Morse codes

            for letter in letters:
                try:
                    # Reverse lookup from the dictionary (inefficient for large dictionaries, but simple)
                    found = False
                    for key, value in MORSE_CODE_DICT.items():
                        if value == letter:
                            text += key
                            found = True
                            break # Stop search once a match is found

                    if not found:
                        raise ValueError(f"Invalid Morse code: {letter}") # Custom Error

                except ValueError as e:
                    raise e # Re-raise the exception to be caught outside
            text += " "
        return text.strip()  # Remove trailing space




    def display_led(self, morse_code):
        """Displays the Morse code using the LED simulation.  Runs in a separate thread to avoid freezing the GUI."""
        self.decode_button.config(state=tk.DISABLED)  # Disable button during processing
        self.morse_input.config(state=tk.DISABLED) # Disable input field during processing

        def led_thread():
            try:
                for symbol in morse_code:
                    if symbol == '.':
                        self.turn_on_led()
                        time.sleep(self.dot_duration / 1000)
                        self.turn_off_led()
                        time.sleep(self.dot_duration / 1000) # Intra-character space

                    elif symbol == '-':
                        self.turn_on_led()
                        time.sleep(self.dash_duration / 1000)
                        self.turn_off_led()
                        time.sleep(self.dot_duration / 1000) # Intra-character space


                    elif symbol == ' ': # Space between letters
                        time.sleep(self.letter_space_duration / 1000)  # Longer pause between letters
                    elif symbol == '/':
                       time.sleep(self.space_duration/1000)

                    self.root.update()  # Update the GUI

                decoded_text = self.morse_to_text(morse_code) #Decode here, after animation is complete
                self.decoded_text.config(state=tk.NORMAL)
                self.decoded_text.delete("1.0", tk.END)
                self.decoded_text.insert("1.0", decoded_text)
                self.decoded_text.config(state=tk.DISABLED)
                self.status_bar.config(text="Decoding complete.") #Update Status bar

            except Exception as e:
                self.status_bar.config(text=f"Error during LED display: {e}") #Status bar
                print(f"Error during LED display: {e}")

            finally:  # Make sure to re-enable button/text, even if there's an error
                self.decode_button.config(state=tk.NORMAL)
                self.morse_input.config(state=tk.NORMAL)


        thread = threading.Thread(target=led_thread)
        thread.start()

    def turn_on_led(self):
        self.led.itemconfig(self.led_circle, fill="yellow")  # Simulate LED turning on
        self.root.update()

    def turn_off_led(self):
        self.led.itemconfig(self.led_circle, fill="gray")  # Simulate LED turning off
        self.root.update()


if __name__ == "__main__":
    root = tk.Tk()
    app = MorseDecoderApp(root)
    root.mainloop()