#   Spice Wheel GUI
#   Olin College, Principles of Engineering, Fall 2007
#   Mary Germino, Christina Nguyen, Leah Engelbert-Fenton, Julie Baca

from Tkinter import *
import tkMessageBox
import tkFileDialog
import tkSimpleDialog
import ctypes

GET_RA0 = 1
GET_RA1 = 2
GET_RA2 = 3
GET_RA3 = 4
SET_RA4 = 5
CLR_RA4 = 6
SET_RA5 = 7
CLR_RA5 = 8

usb = ctypes.cdll.LoadLibrary('usb.dll')
usb.initialize()

dev = usb.open_device(0x6666, 0x0003)

buffer = ctypes.c_buffer(8)

##############
#we won't need all these callbacks, but i left them there for now just because.

def get_ra0_callback():
	usb.control_transfer(dev, 0xC0, GET_RA0, 0, 0, 1, buffer)
	bit0 = ord(buffer[0])   #value of 1st sensor
	return bit0

def get_ra1_callback():
	usb.control_transfer(dev, 0xC0, GET_RA1, 0, 0, 1, buffer)
	bit1 = ord(buffer[0])   #value of 2nd sensor
	return bit1

def get_ra2_callback():
	usb.control_transfer(dev, 0xC0, GET_RA2, 0, 0, 1, buffer)
	bit2 = ord(buffer[0])   #value of 3rd sensor
	return bit2

def get_ra3_callback():
	usb.control_transfer(dev, 0xC0, GET_RA3, 0, 0, 1, buffer)
	bit3 = ord(buffer[0])   #value of 4th sensor
	return bit3

#RA4 = wheel motor
def set_ra4_callback():
	usb.control_transfer(dev, 0x40, SET_RA4, 0, 0, 0, buffer)

def clr_ra4_callback():
	usb.control_transfer(dev, 0x40, CLR_RA4, 0, 0, 0, buffer)

#RA5 = dispenser motor
def set_ra5_callback():
	usb.control_transfer(dev, 0x40, SET_RA5, 0, 0, 0, buffer)

def clr_ra5_callback():
	usb.control_transfer(dev, 0x40, CLR_RA5, 0, 0, 0, buffer)
#######################	

def openabout_callback():
    tkMessageBox.showinfo("About", "Version 0.1\n Copyright 2007")

def exit_callback():
    root.destroy()

def openwheelsetup_callback():
    global wheelSetup
    wheelSetup.deiconify()

def openrecipemaker_callback():
    pass

def submitSpices():
    print 'Changes are saved!'
    global row1, row2, row3, row4, row5, row6, row7, row8
    global spice1name, spice2name, spice3name, spice4name, spice5name, spice6name, spice7name, spice8name
    global var1, var2, var3, var4, var5, var6, var7, var8
    global check1, check2, check3, check4, check5, check6, check7, check8
    global font1, font2, font3
    
    spice1name = Variable.get(s1)
    spice2name = Variable.get(s2)
    spice3name = Variable.get(s3)
    spice4name = Variable.get(s4)
    spice5name = Variable.get(s5)
    spice6name = Variable.get(s6)
    spice7name = Variable.get(s7)
    spice8name = Variable.get(s8)
    
    check1.configure(text = spice1name, font = font2)
    check2.configure(text = spice2name, font = font2)
    check3.configure(text = spice3name, font = font2)
    check4.configure(text = spice4name, font = font2)
    check5.configure(text = spice5name, font = font2)
    check6.configure(text = spice6name, font = font2)
    check7.configure(text = spice7name, font = font2)
    check8.configure(text = spice8name, font = font2)

def GetCheckbuttonVariables():
    global var1, var2, var3, var4, var5, var6, var7, var8, Variable, GetCheckbuttonVariables
    checkbuttonVariables = [Variable.get(var1),  Variable.get(var2), Variable.get(var3), Variable.get(var4),
                            Variable.get(var5), Variable.get(var6), Variable.get(var7), Variable.get(var8)]
    return checkbuttonVariables

def GetSpiceAmounts():
    global spice1amount, spice2amount, spice3amount, spice4amount, spice5amount, spice6amount, spice7amount, spice8amount 
    spiceAmounts = [Variable.get(spice1amount), Variable.get(spice2amount), Variable.get(spice3amount), Variable.get(spice4amount),
                    Variable.get(spice5amount), Variable.get(spice6amount), Variable.get(spice7amount), Variable.get(spice8amount)]
    return spiceAmounts

def ObtainSensorValuesforPosition(position):
    print "btw, these positions are completely bogus."
    if position == 0:
        return [1,1,0,0]
    if position == 1:
        return [1,1,1,1]
    if position == 2:
        return [1,1,1,1]
    if position == 3:
        return [1,1,1,1]
    if position == 4:
        return [1,1,1,1]
    if position == 5:
        return [1,1,1,1]
    if position == 6:
        return [1,1,1,1]
    if position == 7:
        return [0,0,0,0]

#This function obtains the current reading of all four sensors (in 1's and 0's) and
#returns them as a list of four numbers.    
def getCurrentSensorReadings():
    global theCurrentSensorReadings
    bit0 = get_ra0_callback()
    bit1 = get_ra1_callback()
    bit2 = get_ra2_callback()
    bit3 = get_ra3_callback()
    theCurrentSensorReadings = [bit0, bit1, bit2, bit3]
      
def MoveWheel(sensorValues):
    #set RA4 high until the right sensor values are read
    print "Actually, no."
    print "Sensor values\n", sensorValues
    running = True
    while running:
            getCurrentSensorReadings()
            #print "running", running
            if theCurrentSensorReadings != sensorValues:
                    set_ra4_callback()
                    print "bits:", theCurrentSensorReadings
            else:
                running = False
                print "Done"
    print "Yay, Done"
    clr_ra4_callback()

def DispenseSpice(amount):   
    #set RA5 high until the right spice amount has been dispensed
    print "There is no spice to dispense yet darling."
    time_to_dispense = 200*amount #200 programming loops to dispense 1 teaspoon
    print "time to dispense", time_to_dispense
    running = True
    while running:
            for i in range(1,time_to_dispense):
                    set_ra5_callback()
                    print "time now", i
            else:
                    running = False
                    print "Done"
    print "Done dispensing"
    clr_ra5_callback()
                    
            

def initiateMovement():
    print "Please STAND BACK - Spice Wheel is in action."
    stopWheel()
    checkbuttonVariables = GetCheckbuttonVariables()
    spiceAmounts = GetSpiceAmounts()
    for i in range(len(checkbuttonVariables)):
        if checkbuttonVariables[i] == '1':
            placeToStop = ObtainSensorValuesforPosition(i)
            MoveWheel(placeToStop)
            amount = spiceAmounts[i]
            DispenseSpice(amount)

def stopWheel():
    print "The Spice Wheel is coming to a halt."
    clr_ra4_callback()
    clr_ra5_callback()
        

#set up some fonts for use in prettifying the gui
global font1, font2, font3
font1 = ('corbel', '14', 'italic', 'bold')
font2 = ('corbel', '12', 'bold')
font3 = ('corbel', '12')

#Create the main window
root = Tk()
root.wm_minsize(width = 590, height = 645)
root.resizable(width=FALSE, height=FALSE)
root.title('Spice Wheel Launcher')

# create a menu
menu = Menu(root)
root.config(menu=menu)

filemenu = Menu(menu)
menu.add_cascade(label="File", menu=filemenu)
filemenu.add_command(label="Exit", command=exit_callback)

propertiesmenu = Menu(menu)
menu.add_cascade(label="Properties", menu=propertiesmenu)
propertiesmenu.add_command(label="Wheel Set Up", command=openwheelsetup_callback)
propertiesmenu.add_command(label="Recipe Maker", command=openrecipemaker_callback)

helpmenu = Menu(menu)
menu.add_cascade(label="Help", menu=helpmenu)
helpmenu.add_command(label="About...", command=openabout_callback)

#this makes a wheel setup window
global wheelSetup
wheelSetup = Toplevel()
wheelSetup.resizable(width=FALSE, height=FALSE)

#organize the wheel setup window into rows . . .
bigrow1 = Frame(wheelSetup, pady = 5)
bigrow1.pack(side = TOP)
bigrow2 = Frame(wheelSetup)
bigrow2.pack(side = TOP)
bigrow3 = Frame(wheelSetup, pady = 5)
bigrow3.pack(side = TOP)

# . . . and columns
column1 = Frame(bigrow2, padx = 5)
column1.pack(side = LEFT, fill=X)
column2 = Frame(bigrow2, bd = 2, relief = GROOVE)
column2.pack(side = LEFT, fill=X)
column3 = Frame(bigrow2, padx = 5)
column3.pack(side = LEFT, fill=X)

wheelSetupLabel = Label(bigrow1, text = "Enter the spices in each position.", font = font1).pack(side = TOP, fill = X)

#initializing the textbox variables
#(these have to be global for the model to be able to see them)
global s1, s2, s3, s4, s5, s6, s7, s8
s1 = StringVar()
s2 = StringVar()
s3 = StringVar()
s4 = StringVar()
s5 = StringVar()
s6 = StringVar()
s7 = StringVar()
s8 = StringVar()

#Make some labelled textboxes in the wheel setup window to input the spice names
spice1 = Entry(column1, width=15, textvariable = s1).pack(side = TOP, anchor=SW, fill=X)
label1 = Label(column1, text='Position 1', font = font2).pack(side=TOP, anchor=S)
spice2 = Entry(column1, width=15, textvariable = s2).pack(side = TOP, anchor=SW, fill=X)
label2 = Label(column1, text='Position 2', font = font2).pack(side=TOP, anchor=S)
spice3 = Entry(column1, width=14, textvariable = s3).pack(side = TOP, anchor=SW, fill=X)
label3 = Label(column1, text='Position 3', font = font2).pack(side=TOP, anchor=S)
spice4 = Entry(column1, width=14, textvariable = s4).pack(side = TOP, anchor=SW, fill=X)
label4 = Label(column1, text='Position 4', font = font2).pack(side=TOP, anchor=S)
spice5 = Entry(column3, width=15, textvariable = s5).pack(side = TOP, anchor=SW, fill=X)
label5 = Label(column3, text='Position 5', font = font2).pack(side=TOP, anchor=S)
spice6 = Entry(column3, width=15, textvariable = s6).pack(side = TOP, anchor=SW, fill=X)
label6 = Label(column3, text='Position 6', font = font2).pack(side=TOP, anchor=S)
spice7 = Entry(column3, width=15, textvariable = s7).pack(side = TOP, anchor=SW, fill=X)
label7 = Label(column3, text='Position 7', font = font2).pack(side=TOP, anchor=S)
spice8 = Entry(column3, width=15, textvariable = s8).pack(side = TOP, anchor=SW, fill=X)
label8 = Label(column3, text='Position 8', font = font2).pack(side=TOP, anchor=S)

#the following lines of code insert the image for designating the spice positions
photo = PhotoImage(file="spicecircle.gif")
w = Label(column2, image=photo)
w.photo = photo
w.pack(anchor=CENTER)

#a button to save changes in the wheel setup window (and make the modified names appear in the root window)
submitbutton = Button(bigrow3, text = "Save Changes", command = submitSpices, font = font3).pack(side = TOP, fill = X)

global spice1amount, spice2amount, spice3amount, spice4amount, spice5amount, spice6amount, spice7amount, spice8amount
spice1amount = IntVar()
spice2amount = IntVar()
spice3amount = IntVar()
spice4amount = IntVar()
spice5amount = IntVar()
spice6amount = IntVar()
spice7amount = IntVar()
spice8amount = IntVar()

#headers
row0 = Frame(root)
row0.pack(side = TOP, fill=X, padx = 25)
currentSpicesLabel = Label(row0, text = 'Current Spices', font = font1).pack(side = LEFT)
amountsLabel = Label(row0, text = 'Amounts (tsp.)', font = font1).pack(anchor = N) 

#some rows to put in the checkbuttons and sliders
global row1, row2, row3, row4, row5, row6, row7, row8
row1 = Frame(root, padx = 8)
row1.pack(side = TOP, fill=X)
row2 = Frame(root, padx = 8)
row2.pack(side = TOP, fill=X)
row3 = Frame(root, padx = 8)
row3.pack(side = TOP, fill=X)
row4 = Frame(root, padx = 8)
row4.pack(side = TOP, fill=X)
row5 = Frame(root, padx = 8)
row5.pack(side = TOP, fill=X)
row6 = Frame(root, padx = 8)
row6.pack(side = TOP, fill=X)
row7 = Frame(root, padx = 8)
row7.pack(side = TOP, fill=X)
row8 = Frame(root, padx = 8)
row8.pack(side = TOP, fill=X)

#initializing the checkbutton variables
global var1, var2, var3, var4, var5, var6, var7, var8, Variable
var1 = IntVar()
var2 = IntVar()
var3 = IntVar()
var4 = IntVar()
var5 = IntVar()
var6 = IntVar()
var7 = IntVar()
var8 = IntVar()

global check1, check2, check3, check4, check5, check6, check7, check8
global spice1name, spice2name, spice3name, spice4name, spice5name, spice6name, spice7name, spice8name

#initializing the spicenames to nothing, since they haven't been entered yet
spice1name = " "
spice2name = " "
spice3name = " "
spice4name = " "
spice5name = " "
spice6name = " "
spice7name = " "
spice8name = " "

#instantiating the checkbuttons
check1 = Checkbutton(row1,text=spice1name, font = font2, variable=var1)
check1.pack(side = LEFT)
check2 = Checkbutton(row2,text=spice2name, font = font2, variable=var2)
check2.pack(side = LEFT)
check3 = Checkbutton(row3,text=spice3name, font = font2, variable=var3)
check3.pack(side = LEFT)
check4 = Checkbutton(row4,text=spice4name, font = font2, variable=var4)
check4.pack(side = LEFT)
check5 = Checkbutton(row5,text=spice5name, font = font2, variable=var5)
check5.pack(side = LEFT)
check6 = Checkbutton(row6,text=spice6name, font = font2, variable=var6)
check6.pack(side = LEFT)
check7 = Checkbutton(row7,text=spice7name, font = font2, variable=var7)
check7.pack(side = LEFT)
check8 = Checkbutton(row8,text=spice8name, font = font2, variable=var8)
check8.pack(side = LEFT)

#instantiating the sliders
scale1 = Scale(row1, variable = spice1amount, from_=0, to=4, length=400, tickinterval=.5, resolution = .25, showvalue=YES,orient=
  'horizontal', font = font3).pack(side=RIGHT)
scale2 = Scale(row2, variable = spice2amount, from_=0, to=4, length=400, tickinterval=.5, resolution = .25, showvalue=YES,orient=
  'horizontal', font = font3).pack(side=RIGHT)
scale3 = Scale(row3, variable = spice3amount, from_=0, to=4, length=400, tickinterval=.5, resolution = .25, showvalue=YES,orient=
  'horizontal', font = font3).pack(side=RIGHT)
scale4 = Scale(row4, variable = spice4amount, from_=0, to=4, length=400, tickinterval=.5, resolution = .25, showvalue=YES,orient=
  'horizontal', font = font3).pack(side=RIGHT)
scale5 = Scale(row5, variable = spice5amount, from_=0, to=4, length=400, tickinterval=.5, resolution = .25, showvalue=YES,orient=
  'horizontal', font = font3).pack(side=RIGHT)
scale6 = Scale(row6, variable = spice6amount, from_=0, to=4, length=400, tickinterval=.5, resolution = .25, showvalue=YES,orient=
  'horizontal', font = font3).pack(side=RIGHT)
scale7 = Scale(row7, variable = spice7amount, from_=0, to=4, length=400, tickinterval=.5, resolution = .25, showvalue=YES,orient=
  'horizontal', font = font3).pack(side=RIGHT)
scale8 = Scale(row8, variable = spice8amount, from_=0, to=4, length=400, tickinterval=.5, resolution = .25, showvalue=YES,orient=
  'horizontal', font = font3).pack(side=RIGHT)

row9 = Frame(root, pady = 10)
row9.pack(side = TOP, fill = X)

GO = Button(row9, text = "COMMENCE", command = initiateMovement, font = font3, padx = 20).pack()       
STOP = Button(row9, text = "ABORT", command = stopWheel, font = font3, padx = 20).pack()

root.mainloop()


##############################
#usb stuff


if dev<0:
	print "No matching device found...\n"
else:
	ret = usb.control_transfer(dev, 0x00, 0x09, 1, 0, 0, buffer)
	if ret<0:
		print "Unable to send SET_CONFIGURATION standard request.\n"
	root.mainloop()
	usb.close_device(dev)