82 lines
2.8 KiB
Python
82 lines
2.8 KiB
Python
#!/usr/bin/env python3.11
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from customtkinter import set_appearance_mode, set_default_color_theme
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from customtkinter import CTk, CTkEntry, CTkButton, CTkLabel, CTkFrame
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from customtkinter import DISABLED
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class Window(CTk):
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def __init__(self):
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super().__init__()
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set_appearance_mode("dark")
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set_default_color_theme("dark-blue")
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self.width: int = self.winfo_screenwidth()
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self.height: int = self.winfo_screenheight()
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self.title("Change Calculator")
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self.attributes("-fullscreen", True) # Initialize screen as fullscreen
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self.bind("<Escape>", self.quitApplication) # quit application
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self.amountDue: float = 0.0
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self.left_frame: CTkFrame = CTkFrame(master=self, width=((self.width / 2) - 20), height=(self.height - 40))
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self.left_frame.grid_propagate(False)
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self.left_frame.grid(row=0, column=0, pady=20, padx=10)
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# Static label
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_mainLabel: CTkLabel = CTkLabel(master=self.left_frame, text="Change Due Calculator")
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_mainLabel.grid(row=0, column=0, pady=12, padx=10)
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charValidation = self.register(self.only_numbers)
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self.entry: CTkEntry = CTkEntry(
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master=self.left_frame,
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placeholder_text="Amount Charged...",
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width=200,
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height=40,
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validate="key",
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validatecommand=(charValidation, '%d', '%s', '%S')
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)
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self.entry.grid(row=1, column=0, pady=12, padx=10)
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# Warning Label
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self.invalidLabel: CTkLabel = CTkLabel(master=self.left_frame, text="Not a Number!", text_color="red", font=("Arial", 24, 'bold'))
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calculateButton: CTkButton = CTkButton(master=self.left_frame, text="Calculate", command=self.calculate, width=200, height=50)
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calculateButton.grid(row=2, column=0, pady=12, padx=10)
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self.right_frame: CTkFrame = CTkFrame(master=self, width=((self.width / 2) - 20), height=(self.height - 40))
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self.right_frame.grid_propagate(False)
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self.right_frame.grid(row=0, column=1, pady=20, padx=10)
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self.total: float = 0.0
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self.totalLabel: CTkLabel = CTkLabel(master=self.right_frame, text=f"Total: {self.total}", font=("Arial", 24, 'bold'))
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self.totalLabel.grid(row=0, column=0, pady=12, padx=10)
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self.mainloop()
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def quitApplication(self, event=None) -> None: self.destroy()
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def only_numbers(self, action: int, current: str, char: str) -> bool:
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if action == 0: return True # If delete character
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if '.' in current and len(current.split('.')[1]) == 2: return False # prevent more than 2 decimal
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return (char.isdigit() or char == ".") # only allow digits and decimal
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def _validateInput(func: callable) -> callable:
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def wrapper(self):
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self.invalidLabel.pack_forget()
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try:
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self.amountDue = float(self.entry.get())
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except ValueError:
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self.invalidLabel.grid(row=3, column=0)
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return
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func(self)
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return wrapper
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@_validateInput
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def calculate(self) -> None:
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print(self.amountDue)
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if __name__ == '__main__':
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window = Window()
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