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Added class inheritance to better decouple the program. #6

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Added class inheritance to better decouple the program. #6

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906be7b
Added class inheritance to better decouple the program.
masomahboob Oct 12, 2023
0f482d2
removed inheritance. refactored the code to use dataclasses for stati…
masomahboob Dec 27, 2023
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122 changes: 93 additions & 29 deletions calc.py
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Original file line number Diff line number Diff line change
@@ -1,15 +1,22 @@
import tkinter as tk
from dataclasses import dataclass

LARGE_FONT_STYLE = ("Arial", 40, "bold")
SMALL_FONT_STYLE = ("Arial", 16)
DIGITS_FONT_STYLE = ("Arial", 24, "bold")
DEFAULT_FONT_STYLE = ("Arial", 20)

OFF_WHITE = "#F8FAFF"
WHITE = "#FFFFFF"
LIGHT_BLUE = "#CCEDFF"
LIGHT_GRAY = "#F5F5F5"
LABEL_COLOR = "#25265E"
@dataclass
class Fonts:
LARGE_FONT_STYLE = ("Arial", 40, "bold")
SMALL_FONT_STYLE = ("Arial", 16)
DIGITS_FONT_STYLE = ("Arial", 24, "bold")
DEFAULT_FONT_STYLE = ("Arial", 20)


@dataclass
class Colors:
OFF_WHITE = "#F8FAFF"
WHITE = "#FFFFFF"
LIGHT_BLUE = "#CCEDFF"
LIGHT_GRAY = "#F5F5F5"
LABEL_COLOR = "#25265E"


class Calculator:
Expand Down Expand Up @@ -46,10 +53,16 @@ def __init__(self):
def bind_keys(self):
self.window.bind("<Return>", lambda event: self.evaluate())
for key in self.digits:
self.window.bind(str(key), lambda event, digit=key: self.add_to_expression(digit))
self.window.bind(
str(key),
lambda event,
digit=key: self.add_to_expression(digit))

for key in self.operations:
self.window.bind(key, lambda event, operator=key: self.append_operator(operator))
self.window.bind(
key,
lambda event,
operator=key: self.append_operator(operator))

def create_special_buttons(self):
self.create_clear_button()
Expand All @@ -58,18 +71,30 @@ def create_special_buttons(self):
self.create_sqrt_button()

def create_display_labels(self):
total_label = tk.Label(self.display_frame, text=self.total_expression, anchor=tk.E, bg=LIGHT_GRAY,
fg=LABEL_COLOR, padx=24, font=SMALL_FONT_STYLE)
total_label = tk.Label(
self.display_frame,
text=self.total_expression,
anchor=tk.E,
bg=Colors.LIGHT_GRAY,
fg=Colors.LABEL_COLOR,
padx=24,
font=Fonts.SMALL_FONT_STYLE)
total_label.pack(expand=True, fill='both')

label = tk.Label(self.display_frame, text=self.current_expression, anchor=tk.E, bg=LIGHT_GRAY,
fg=LABEL_COLOR, padx=24, font=LARGE_FONT_STYLE)
label = tk.Label(
self.display_frame,
text=self.current_expression,
anchor=tk.E,
bg=Colors.LIGHT_GRAY,
fg=Colors.LABEL_COLOR,
padx=24,
font=Fonts.LARGE_FONT_STYLE)
label.pack(expand=True, fill='both')

return total_label, label

def create_display_frame(self):
frame = tk.Frame(self.window, height=221, bg=LIGHT_GRAY)
frame = tk.Frame(self.window, height=221, bg=Colors.LIGHT_GRAY)
frame.pack(expand=True, fill="both")
return frame

Expand All @@ -79,9 +104,18 @@ def add_to_expression(self, value):

def create_digit_buttons(self):
for digit, grid_value in self.digits.items():
button = tk.Button(self.buttons_frame, text=str(digit), bg=WHITE, fg=LABEL_COLOR, font=DIGITS_FONT_STYLE,
borderwidth=0, command=lambda x=digit: self.add_to_expression(x))
button.grid(row=grid_value[0], column=grid_value[1], sticky=tk.NSEW)
button = tk.Button(
self.buttons_frame,
text=str(digit),
bg=Colors.WHITE,
fg=Colors.LABEL_COLOR,
font=Fonts.DIGITS_FONT_STYLE,
borderwidth=0,
command=lambda x=digit: self.add_to_expression(x))
button.grid(
row=grid_value[0],
column=grid_value[1],
sticky=tk.NSEW)

def append_operator(self, operator):
self.current_expression += operator
Expand All @@ -93,8 +127,14 @@ def append_operator(self, operator):
def create_operator_buttons(self):
i = 0
for operator, symbol in self.operations.items():
button = tk.Button(self.buttons_frame, text=symbol, bg=OFF_WHITE, fg=LABEL_COLOR, font=DEFAULT_FONT_STYLE,
borderwidth=0, command=lambda x=operator: self.append_operator(x))
button = tk.Button(
self.buttons_frame,
text=symbol,
bg=Colors.OFF_WHITE,
fg=Colors.LABEL_COLOR,
font=Fonts.DEFAULT_FONT_STYLE,
borderwidth=0,
command=lambda x=operator: self.append_operator(x))
button.grid(row=i, column=4, sticky=tk.NSEW)
i += 1

Expand All @@ -105,26 +145,44 @@ def clear(self):
self.update_total_label()

def create_clear_button(self):
button = tk.Button(self.buttons_frame, text="C", bg=OFF_WHITE, fg=LABEL_COLOR, font=DEFAULT_FONT_STYLE,
borderwidth=0, command=self.clear)
button = tk.Button(
self.buttons_frame,
text="C",
bg=Colors.OFF_WHITE,
fg=Colors.LABEL_COLOR,
font=Fonts.DEFAULT_FONT_STYLE,
borderwidth=0,
command=self.clear)
button.grid(row=0, column=1, sticky=tk.NSEW)

def square(self):
self.current_expression = str(eval(f"{self.current_expression}**2"))
self.update_label()

def create_square_button(self):
button = tk.Button(self.buttons_frame, text="x\u00b2", bg=OFF_WHITE, fg=LABEL_COLOR, font=DEFAULT_FONT_STYLE,
borderwidth=0, command=self.square)
button = tk.Button(
self.buttons_frame,
text="x\u00b2",
bg=Colors.OFF_WHITE,
fg=Colors.LABEL_COLOR,
font=Fonts.DEFAULT_FONT_STYLE,
borderwidth=0,
command=self.square)
button.grid(row=0, column=2, sticky=tk.NSEW)

def sqrt(self):
self.current_expression = str(eval(f"{self.current_expression}**0.5"))
self.update_label()

def create_sqrt_button(self):
button = tk.Button(self.buttons_frame, text="\u221ax", bg=OFF_WHITE, fg=LABEL_COLOR, font=DEFAULT_FONT_STYLE,
borderwidth=0, command=self.sqrt)
button = tk.Button(
self.buttons_frame,
text="\u221ax",
bg=Colors.OFF_WHITE,
fg=Colors.LABEL_COLOR,
font=Fonts.DEFAULT_FONT_STYLE,
borderwidth=0,
command=self.sqrt)
button.grid(row=0, column=3, sticky=tk.NSEW)

def evaluate(self):
Expand All @@ -140,8 +198,14 @@ def evaluate(self):
self.update_label()

def create_equals_button(self):
button = tk.Button(self.buttons_frame, text="=", bg=LIGHT_BLUE, fg=LABEL_COLOR, font=DEFAULT_FONT_STYLE,
borderwidth=0, command=self.evaluate)
button = tk.Button(
self.buttons_frame,
text="=",
bg=Colors.LIGHT_BLUE,
fg=Colors.LABEL_COLOR,
font=Fonts.DEFAULT_FONT_STYLE,
borderwidth=0,
command=self.evaluate)
button.grid(row=4, column=3, columnspan=2, sticky=tk.NSEW)

def create_buttons_frame(self):
Expand Down