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Add new button in calculator. #2

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Add new button in calculator. #2

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19 changes: 17 additions & 2 deletions calc.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,7 @@
import tkinter as tk
from tkinter import font

from matplotlib.pyplot import text

LARGE_FONT_STYLE = ("Arial", 40, "bold")
SMALL_FONT_STYLE = ("Arial", 16)
Expand Down Expand Up @@ -53,6 +56,7 @@ def bind_keys(self):

def create_special_buttons(self):
self.create_clear_button()
self.create_clear_last_character_button()
self.create_equals_button()
self.create_square_button()
self.create_sqrt_button()
Expand Down Expand Up @@ -104,14 +108,24 @@ def clear(self):
self.update_label()
self.update_total_label()

def clear_last_character(self):
if self.current_expression != "":
self.current_expression = self.current_expression[:-1]
self.update_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.grid(row=0, column=1, sticky=tk.NSEW)

def create_clear_last_character_button(self):
button = tk.Button(self.buttons_frame,text="<=",bg=OFF_WHITE,fg=LABEL_COLOR, font=DEFAULT_FONT_STYLE,
borderwidth=0,command=self.clear_last_character )
button.grid(row=4,column=3,sticky=tk.NSEW)

def square(self):
self.current_expression = str(eval(f"{self.current_expression}**2"))
self.update_label()
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,
Expand Down Expand Up @@ -142,7 +156,7 @@ def evaluate(self):
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.grid(row=4, column=3, columnspan=2, sticky=tk.NSEW)
button.grid(row=4, column=4, columnspan=1, sticky=tk.NSEW)

def create_buttons_frame(self):
frame = tk.Frame(self.window)
Expand All @@ -165,3 +179,4 @@ def run(self):
if __name__ == "__main__":
calc = Calculator()
calc.run()
calc.clear_last_character()