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Update calc.py #13

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51 changes: 43 additions & 8 deletions calc.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import tkinter as tk
import tkinter as tk, os

LARGE_FONT_STYLE = ("Arial", 40, "bold")
SMALL_FONT_STYLE = ("Arial", 16)
Expand All @@ -14,16 +14,19 @@

class Calculator:
def __init__(self):
directory = os.getcwd().replace('\\', '/')
self.window = tk.Tk()
self.window.geometry("375x667")
self.window.geometry("375x467")
self.window.resizable(0, 0)
self.window.title("Calculator")

self.window.title("::-Calculator-::")
self.window.iconphoto(False, tk.PhotoImage(file=directory+'/calc3.png'))
self.total_expression = ""
self.current_expression = ""
self.display_frame = self.create_display_frame()
self.ret=True

self.total_label, self.label = self.create_display_labels()
self.entrou=1

self.digits = {
7: (1, 1), 8: (1, 2), 9: (1, 3),
Expand All @@ -45,11 +48,22 @@ def __init__(self):

def bind_keys(self):
self.window.bind("<Return>", lambda event: self.evaluate())
self.window.bind("<KP_Enter>", lambda event: self.evaluate())
self.window.bind("<Escape>", lambda event: self.clear())
self.window.bind("<KP_Multiply>", lambda event, operator="*": self.append_operator(operator))
self.window.bind("<KP_Add>", lambda event, operator="+": self.append_operator(operator))
self.window.bind("<KP_Subtract>", lambda event, operator="-": self.append_operator(operator))
self.window.bind("<KP_Decimal>", lambda event, operator=".": self.add_to_expression(operator))
self.window.bind("<KP_Separator>", lambda event, operator=".": self.add_to_expression(operator))
self.window.bind("<KP_Divide>", lambda event, operator="/": self.append_operator(operator))
self.window.bind("<BackSpace>", lambda event: self.minus_expression())
for key in self.digits:
self.window.bind(str(key), lambda event, digit=key: self.add_to_expression(digit))

if key != ".":
self.window.bind('<KP_'+ 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))


def create_special_buttons(self):
self.create_clear_button()
Expand All @@ -74,16 +88,34 @@ def create_display_frame(self):
return frame

def add_to_expression(self, value):
self.current_expression += str(value)
if(self.entrou==0):
if("." in self.current_expression and value!='.'):
self.current_expression += str(value)
elif (not "." in self.current_expression and value!='.'):
self.current_expression += str(value)
elif (not "." in self.current_expression and value=='.'):
self.current_expression += str(value)
elif(self.entrou==1):
self.current_expression=""
self.current_expression=str(value)
self.entrou=0
self.update_label()


def minus_expression(self):
self.current_expression = self.current_expression[:-1]
self.update_label()

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)

def append_operator(self, operator):
subs = self.total_expression[len(self.total_expression)-1:]
for key in self.operations:
if (subs==str(key) and self.current_expression==''):
return
self.current_expression += operator
self.total_expression += self.current_expression
self.current_expression = ""
Expand All @@ -103,6 +135,7 @@ def clear(self):
self.total_expression = ""
self.update_label()
self.update_total_label()
self.entrou=1

def create_clear_button(self):
button = tk.Button(self.buttons_frame, text="C", bg=OFF_WHITE, fg=LABEL_COLOR, font=DEFAULT_FONT_STYLE,
Expand All @@ -128,15 +161,17 @@ def create_sqrt_button(self):
button.grid(row=0, column=3, sticky=tk.NSEW)

def evaluate(self):
if(self.current_expression==""):
return
self.total_expression += self.current_expression
self.update_total_label()
try:
self.current_expression = str(eval(self.total_expression))

self.total_expression = ""
except Exception as e:
self.current_expression = "Error"
finally:
self.entrou=1
self.update_label()

def create_equals_button(self):
Expand Down