import math import tkinter as tk from tkinter import ttk, messagebox from datetime import date import re # Updated exchange rates for 2024 (example values) exchange_rates = {'NZD': {'USD': 0.60, 'CAD': 0.81}, 'USD': {'NZD': 1.67, 'CAD': 1.36}, 'CAD': {'NZD': 1.23, 'USD': 0.74}} # Button colors BUTTON_COLOR = "#a8dadc" # Light blue HELP_BUTTON_COLOR = "#457b9d" # Dark blue # Input Box Colours INPUT_BOX_COLOUR = "#f1faee" # Light green class HelpWindow(tk.Toplevel): def __init__(self, master=None, parent=None): super().__init__(master) self.title("Help") self.geometry("500x260") self.configure(bg="#1d3557") # Dark blue background self.parent = parent self.help_text = ("Welcome to the Currency Converter!\n\n" "1. Select the 'From Currency' and 'To Currency' from the menus.\n" "2. Enter the amount you want to convert in the 'Amount' field.\n" "3. Click the 'Convert' button to see the conversion result.\n\n" "Thank you for using our Currency Converter!") centered_text = '\n'.join(f"{' '*((0-len(line))//2)}{line}{' '*((100-len(line))//2)}" for line in self.help_text.split('\n')) self.text_widget = tk.Text(self, wrap="word", bg="#a8dadc", fg="#1d3557", font=("Arial", 12, "bold")) self.text_widget.insert(tk.END, centered_text) self.text_widget.config(state="disabled") self.text_widget.grid(row=0, column=0, sticky="nsew", padx=20, pady=20) self.back_button = tk.Button(self, text="Back", command=self.close_help, bg="#a8dadc", fg="#1d3557", font=("Arial", 12, "bold")) self.back_button.grid(row=1, column=0, sticky="ew", padx=20, pady=(0, 10)) self.grid_rowconfigure(0, weight=1) # Make the text widget expandable self.grid_columnconfigure(0, weight=1) # Make the back button expandable def close_help(self): self.parent.deiconify() # Show the parent window self.destroy() # Close the help window class HistoryExport: def __init__(self, parent, history): self.parent = parent self.history = history self.filename = "" self.history_window = tk.Toplevel(parent) self.history_window.title("Conversion History") self.history_window.geometry("300x500") self.history_window.configure(bg="#1d3557") # Dark blue background # Previous conversions label previous_conversions_label = tk.Label(self.history_window, text="Previous Conversions", bg="#1d3557", fg="#a8dadc", font=("Arial", 12, "bold")) previous_conversions_label.pack(pady=(10, 5)) # Create a Listbox to display history entries self.history_listbox = tk.Listbox(self.history_window, selectmode=tk.MULTIPLE, font=("Arial", 10), bg="#a8dadc") self.history_listbox.pack(expand=True, fill=tk.BOTH, padx=10, pady=10) # Add history entries to the Listbox for entry in self.history: self.history_listbox.insert(tk.END, entry) # Add a button to add selected history entries to a file add_to_file_button = tk.Button(self.history_window, text="Export to File", command=self.add_to_file, bg="#a8dadc", fg="#1d3557", font=("Arial", 12, "bold")) add_to_file_button.pack(side=tk.BOTTOM, fill=tk.X, padx=20, pady=(10, 20)) # Add a back button back_button = tk.Button(self.history_window, text="Back", command=self.close_history, bg="#a8dadc", fg="#1d3557", font=("Arial", 12, "bold")) back_button.pack(side=tk.BOTTOM, fill=tk.X, padx=20, pady=(0, 10)) def add_to_file(self): selected_indices = self.history_listbox.curselection() if not selected_indices: messagebox.showinfo("No Selection", "Please select entries to add to the file.") return selected_entries = [self.history_listbox.get(index) for index in selected_indices] # Write selected conversions to the file if not self.filename: self.filename = "conversion_history.txt" # Message to be added at the top of the file message = "Here Are The Selected Conversion's:\n\n" with open(self.filename, "a") as file: file.write(message) # Write the message at the top of the file for entry in selected_entries: file.write(entry + "\n") messagebox.showinfo("File Updated", "Selected conversion history has been added to the file.") def close_history(self): self.history_window.destroy() # Close the history window self.parent.deiconify() # Show the main window class CurrencyConverterApp: def display_help(self): self.root.withdraw() # Hide the main window help_window = HelpWindow(self.root, parent=self.root) def __init__(self, root): self.root = root self.root.title("Currency Converter") self.root.configure(bg="#1d3557") # Dark blue background # Create Frames self.input_frame = tk.Frame(root, padx=10, pady=10, bg="#1d3557") # Dark blue background self.input_frame.grid(row=0, column=0) self.result_frame = tk.Frame(root, padx=10, pady=10, bg="#1d3557") # Dark blue background self.result_frame.grid(row=1, column=0) # Labels and Entry self.from_currency_label = tk.Label(self.input_frame, text="From Currency:", fg="#a8dadc", font=("Arial", 12, "bold"), bg="#1d3557") # Dark blue background self.from_currency_label.grid(row=0, column=0, padx=5, pady=5) self.from_currency_var = tk.StringVar() self.from_currency_menu = ttk.Combobox(self.input_frame, textvariable=self.from_currency_var, values=list(exchange_rates.keys()), style="My.TCombobox") self.from_currency_menu.grid(row=0, column=1, padx=5, pady=5) self.from_currency_var.set("NZD") self.to_currency_label = tk.Label(self.input_frame, text="To Currency:", fg="#a8dadc", font=("Arial", 12, "bold"), bg="#1d3557") # Dark blue background self.to_currency_label.grid(row=1, column=0, padx=5, pady=5) self.to_currency_var = tk.StringVar() self.to_currency_menu = ttk.Combobox(self.input_frame, textvariable=self.to_currency_var, values=list(exchange_rates.keys()), style="My.TCombobox") self.to_currency_menu.grid(row=1, column=1, padx=5, pady=5) self.to_currency_var.set("USD") self.amount_label = tk.Label(self.input_frame, text="Amount:", foreground="#a8dadc", bg="#1d3557", font=("Arial", 12, "bold")) # Dark blue background self.amount_label.grid(row=2, column=0, padx=5, pady=5) self.amount_entry = tk.Entry(self.input_frame, bg="#a8dadc") # Light blue background self.amount_entry.grid(row=2, column=1, padx=5, pady=5) # Result Label self.result_label = tk.Label(self.result_frame, text="", padx=10, pady=10, fg="#a8dadc", font=("Arial", 16, "bold"), bg="#1d3557") # Dark blue background self.result_label.pack() # Convert Button self.convert_button = tk.Button(self.input_frame, text="Convert", command=self.convert_currency, bg=BUTTON_COLOR, fg="#1d3557", font=("Arial", 12, "bold")) # Light blue button self.convert_button.grid(row=3, column=0, columnspan=2, padx=5, pady=5) # Help Button self.help_button = tk.Button(self.root, text="Help", command=self.display_help, bg=BUTTON_COLOR, fg="#1d3557", font=("Arial", 12, "bold")) # Dark blue button self.help_button.grid(row=2, column=0, padx=5, pady=(0, 5), sticky='ew') # History Button self.history_button = tk.Button(self.root, text="History", command=self.display_history, bg=BUTTON_COLOR, fg="#1d3557", font=("Arial", 12, "bold")) # Light blue button self.history_button.grid(row=3, column=0, padx=5, pady=(0, 5), sticky='ew') # Initialize history list self.history = [] def convert_currency(self): from_currency = self.from_currency_var.get() to_currency = self.to_currency_var.get() amount = self.amount_entry.get().strip() if not amount: messagebox.showerror("Error", "Amount field cannot be empty!") self.amount_entry.config(bg="#e63946") # Red background return try: amount = float(amount) self.amount_entry.config(bg=INPUT_BOX_COLOUR) # Light green background if amount <= 0 or math.copysign(1, amount) == 0: raise ValueError("Amount must be above 0!") except ValueError as e: messagebox.showerror("Error", str(e)) self.amount_entry.config(bg="#e63946") # Red background return if from_currency == to_currency: messagebox.showerror("Error", "Please select different currencies.") self.amount_entry.config(bg="#e63946") # Red background return converted_amount = amount * exchange_rates[from_currency][to_currency] self.result_label.config(text=f"{amount} {from_currency} equals {converted_amount:.2f} {to_currency}") # Append the conversion result to the history list history_entry = f"{amount} {from_currency} equals {converted_amount:.2f} {to_currency}" self.history.append(history_entry) def display_history(self): self.root.withdraw() # Hide the main window history_export = HistoryExport(self.root, self.history) root = tk.Tk() app = CurrencyConverterApp(root) root.mainloop()