# -*- coding: cp1252 -*-

"""
Autor:               Vinicius Rodrigues da Cunha Perallis
Data:                19/04/2006
                     20/04/2006
Projeto:             Calculadora Comercial 
impressão
Interpretador:       Python 2.4.1
Sistema Operacional: Linux
"""


#Importa todas funcoes do modulo Tkinter
from Tkinter import *


#Classe Principal que executa o aplicativo Calculadora
class Calculadora:
    
    def __init__(self,parent):
        self.myapp=parent
        self.myapp.title("Calculadora - Phy")
        #Cria o frame principa
        self.geral=Frame(self.myapp,bg="gray")
        self.geral.pack()
        
        #Cria os frames nescessarios para a disposição dos widgets no 
programa
        self.fexibir=Frame(self.geral,bg="gray")
        self.fzero=Frame(self.geral,bg="gray")
        self.fum=Frame(self.geral,bg="gray")
        self.fdois=Frame(self.geral,bg="gray")
        self.ftreis=Frame(self.geral,bg="gray")
        self.fquatro=Frame(self.geral,bg="gray")
        

        #Caixa de texto, que servirá para mostrar os numeros
        
self.visor=Entry(self.fexibir,width=23,bg="white",fg="blue",justify="right")
        self.visor.insert(INSERT,0) 
        # Frame geral: Escreve um titulo na primeira linha do programa 
        self.titulo=Label(self.geral,text="  CALCULADORA PYTHON  
",bg="gray",fg="black",font=('Helvetica','10','bold'))
        # Insere a cixa de Texto que seá utilizada para fazer a fita de 
impressão
        self.ffita=Frame(self.geral)
        self.ffita.pack(side="right",padx=15)
        self.sb=Scrollbar(self.ffita)
        
self.fita=Text(self.ffita,width=23,height=13,bg="white",yscrollcommand=self.sb.set)
        self.sb["command"] = self.fita.yview
        self.fita.pack(side="left",padx=0)
        self.sb.pack(side="right",fill=Y)
        
        
        ## WIDGETS NO FRAME ZERO 
#########################################################
        #Botao para reiniciar a calculadora
        
self.c=Button(self.fzero,text="C",bg="white",width=4,command=self.zera)
        #Label para organizar o programa
        self.space1=Label(self.fzero,bg="gray",text="                       
")
        #Botao igual 
        
self.igual=Button(self.fzero,text="=",bg="white",width=4,command=lambda sin="": self.op(sin))
        
###################################################################################

       
        ## WIDGETS NO FRAME UM 
############################################################
        self.sete=Button(self.fum,text="7",width=4,command=lambda n=7: 
self.write_visor(n))
        self.oito=Button(self.fum,text="8",width=4,command=lambda n=8: 
self.write_visor(n))
        self.nove=Button(self.fum,text="9",width=4,command=lambda n=9: 
self.write_visor(n))
        self.div=Button(self.fum,text="/",fg="red",width=4, 
command=lambda sin='/': self.op(sin))
        
###################################################################################

        ## WIDGETS NO FRAME DOIS 
############################################################
        self.quatro=Button(self.fdois,text="4",width=4,command=lambda 
n=4: self.write_visor(n))
        self.cinco=Button(self.fdois,text="5",width=4,command=lambda 
n=5: self.write_visor(n))
        self.seis=Button(self.fdois,text="6",width=4,command=lambda 
n=6: self.write_visor(n))
        self.mult=Button(self.fdois,text="*",fg="red",width=4 
,command=lambda sin='*': self.op(sin))
        
###################################################################################

        ## WIDGETS NO FRAME TREIS 
##########################################################
        self.um=Button(self.ftreis,text="1",width=4,command=lambda n=1: 
self.write_visor(n) )
        self.dois=Button(self.ftreis,text="2",width=4,command=lambda 
n=2: self.write_visor(n))
        self.tres=Button(self.ftreis,text="3",width=4,command=lambda 
n=3: self.write_visor(n))
        self.menos=Button(self.ftreis,text="-",fg="red",width=4, 
command=lambda sin='-': self.op(sin) )
        
###################################################################################

        ## WIDGETS NO FRAME 
QUATRO#########################################################
        self.zero=Button(self.fquatro,text="0",width=4,command=lambda 
n=0: self.write_visor(n))
        self.virg=Button(self.fquatro,text=",",width=4,command=lambda 
n='.': self.write_visor(n))
        self.maismenos=Button(self.fquatro,fg="red",text="+/-",width=4, 
command=lambda n=-1: self.write_visor(n))
        self.mais=Button(self.fquatro,fg="red",text="+",width=4, 
command=lambda sin='+': self.op(sin))
        
###################################################################################

        #Frame fgeral   
        self.titulo.pack()
         
        #Frame fexibir   
        self.fexibir.pack()
       
        self.visor.pack(ipadx="3")
   
        #Frame fzero  
        self.fzero.pack()       
       
        self.c.pack(side=LEFT,fill=X,pady="5",padx="2")
        self.igual.pack(side=LEFT,fill=X,pady="5",padx="2")
        self.space1.pack()

        #Frame fum   
        self.fum.pack()
   
        self.sete.pack(side="left",padx=2,pady=2)
        self.oito.pack(side="left",padx=2,pady=2)
        self.nove.pack(side="left",padx=2,pady=2)
        self.div.pack(side="left",padx=2,pady=2)
        
        #Frame fdois   
        self.fdois.pack()
        self.seis.pack(side="left",padx=2,pady=2)
        self.cinco.pack(side="left",padx=2,pady=2)
        self.quatro.pack(side="left",padx=2,pady=2)
        self.mult.pack(side="left",padx=2,pady=2)

        #Frame ftreis 
        self.ftreis.pack()
        self.tres.pack(side="left",padx=2,pady=2)
        self.dois.pack(side="left",padx=2,pady=2)
        self.um.pack(side="left",padx=2,pady=2)
        self.menos.pack(side="left",padx=2,pady=2)

        #Frame fquatro   
        self.fquatro.pack()
        self.maismenos.pack(side="left",padx=2,pady=2)
        self.zero.pack(side="left",padx=2,pady=2)
        self.virg.pack(side="left",padx=2,pady=2)
        self.mais.pack(side="left",padx=2,pady=2)
        
        #  Variais da classe 
        self.z=0
        self.w=1
        self.atual=0
        self.i=0
        self.ty=0
        self.num=0
        self.prim=0
        self.h=0
        self.sa=0
       
        


    ###------------------------------Função para realizar as operações 
aritiméticas --------------------------###
        
    def op(self,sin):
        if (self.w==0):
            self.num=float(self.visor.get())
            print self.num
            self.sinal=sin
            self.w=1
            self.z=1
            self.i=0 
            self.ty=0
            self.divi=0
            if self.prim==0:
                self.ty=1
                
        else :   
            if self.ty==0:
                self.atual=float(self.visor.get())
                
            if self.sa==1 and self.ty==1:
                self.num=float(self.visor.get())
                self.sa=0
                
            if self.sinal=='+':
                self.num=self.num + self.atual
            elif  self.sinal=='-':
                self.num=self.num - self.atual
            elif  self.sinal=='/' and self.ty!=1 and self.atual!=0:
                self.num=self.num / self.atual
            elif  self.sinal=='/' and self.atual==0 and self.ty!=1:
                self.visor.delete(0,END)
                self.visor.insert(INSERT,"Imposivel dividir")
                self.divi=1
                self.prim=1
            elif  self.sinal=='*' and self.ty!=1 and self.prim==1:
                self.num=self.num * self.atual
            
            if self.divi==0:
                self.visor.delete(0,END)
                self.visor.insert(END,self.num)
                self.prim=1
            if self.divi==0 and self.ty==0:
                self.fita.insert(INSERT,"\n"+self.sinal)
                self.fita.insert(INSERT,"\n"+str(self.atual))
                self.fita.insert(INSERT,"\n"+"=")
                self.fita.insert(INSERT,"\n"+str(self.num))
            
                                         
            self.atual=0
            self.ty=1
            self.i=0
            self.w=1
            self.z=1
            self.div=0 
            self.sinal=sin
    ###---------------------------------------- Fim da funçõa 
aritmética op --------------------------------------###




    ###-------------------------------- Função para escrever os numeros 
no visor ---------------------------------###       
    def write_visor(self,n):
        if (self.z==1) and n!=-1:
            if self.i==0: 
                 self.visor.delete(0,END)         
          
            self.visor.insert(INSERT,n)
            self.w=1
            self.z=1
            self.i=1
            self.ty=0
            self.prim=1
       
        
            
        elif self.z==0 and n!=-1:
            if self.i==0:
                self.visor.delete(0,END)         
            self.visor.insert(INSERT,n)
            self.fita.insert(INSERT,n)
            self.w=0
            self.i=1
            self.ty=0
        if  n==-1:
            self.la=float(self.visor.get()) * (-1)
            self.visor.delete(0,END)
            self.visor.insert(END,self.la)
            self.fita.insert(INSERT,"\n"+"*(-1)")
            self.fita.insert(INSERT,"\n"+"=")
            self.fita.insert(INSERT,"\n"+str(self.la))
            self.sa=1
           
    ###---------------------------------------- Fim da funçõa 
write_visor --------------------------------------###
       


    ###---------------------------------- Função para reiniciar a calculadora ----------------------------------###        
    def zera(self):
        self.num=0
        self.z=0
        self.w=1
        self.atual=0
        self.i=0
        self.ty=0
        self.prim=0
        self.visor.delete(0,END)
        self.visor.insert(INSERT,0)
        self.fita.delete('1.0','90.0')
    ###------------------------------------------- Fim da função 
zera-------------------------------------------### 
       
        

            
# root Intacia-se pela classe Tk() e inicia a aplicação       
root=Tk()
aplicativo=Calculadora(root)
root.mainloop()