# Modified from original hello.txrx.45.py code.

import Tkinter
from Tkinter import *
import serial
import tkMessageBox

# from osax import *
# from appscript import *
import time

WINDOW = 600 # window size
eps = 0.75 # filter fraction
filt = 0.0 # filtered value

threshold = 10000
temp = 0
two = 0

# itunes = app('itunes')

# sa = OSAX()


def idle(parent,canvas):
	global filt, eps
	
	global threshold, temp, two, sa
	#
	# Idle routine.
	#
	byte2 = 0
	byte3 = 0
	byte4 = 0
	ser.flush()
	#
	# Find framing.
	#
	while 1:
		byte1 = byte2
		byte2 = byte3
		byte3 = byte4
		byte4 = ord(ser.read())
		if ((byte1 == 1) & (byte2 == 2) & (byte3 == 3) & (byte4 == 4)):
			break
	#
	# Read and plot.
	#
	
	# ord(c) = Given a string of length one, return an integer representing the Unicode code point 
	# of the character when the argument is a unicode object, or the value of the byte when the 
	# argument is an 8-bit string.
	
	up_low = ord(ser.read())
	up_high = ord(ser.read())
	down_low = ord(ser.read())
	down_high = ord(ser.read())
	up_value = 256*up_high + up_low
	down_value = 256*down_high + down_low
	value = (up_value - down_value)
	filt = (1-eps)*filt + eps*value

	x = int(.2*WINDOW + (0.9-0.2)*WINDOW*filt/10000.0)
	canvas.itemconfigure("text",text = "%.1f"%filt)
	canvas.coords('rect1', 0.2*WINDOW, 0.05*WINDOW, x, 0.2*WINDOW)
	canvas.coords('rect2', x, 0.05*WINDOW, 0.9*WINDOW, 0.2*WINDOW)
	
	canvas.itemconfigure("countL", text = "0")
	canvas.coords('rectL', 0.2*WINDOW, 0.4*WINDOW, 0.5*WINDOW, 0.5*WINDOW)
	

	test = filt
	if test > threshold:
		print "OVER!"
		print threshold
		temp += 1
		canvas.itemconfigure("countL", text = temp)
		canvas.itemconfigure('rectL', fill = 'blue')
		canvas.update()
		parent.after_idle(idle, parent, canvas)
		
# 		sa.set_volume(temp*10)
		
		if temp > 10:
			temp = 0
	else:
		print "UHOH!"
		print temp
		canvas.itemconfigure("countL", text = temp)
		canvas.itemconfigure('rectL', fill = 'green')
	
	canvas.update()
	parent.after_idle(idle, parent, canvas)


#
#  Check command line arguments.
#
if (len(sys.argv) != 2):
   print "command line: hello.txrx.45V3.py serial_port"
   sys.exit()
port = sys.argv[1]
#
# Open serial port.
#
ser = serial.Serial(port, 9600)
ser.setDTR()
#
# Set up GUI.
#
top = Tkinter.Tk()
top.title('hello.txrx.45V3.py (q to exit)')
top.bind('q', 'exit')

def helloCallBack():
	tkMessageBox.showinfo("Hello Python", "Hello World")

count = 0
def increment():
	global count
	count += 1
	if count >= 5:
		count = 0
		B.config(state = ACTIVE)
	print str(count) + ' Done'

B = Tkinter.Button(top, text ="Click Me!!", activebackground = '#E6E6FA', command = helloCallBack, \
	fg = '#E6E6FA', highlightcolor = '#00000b', state = 'disabled')

C = Tkinter.Button(top, text ="Click Me First!!", command = increment, state = 'normal')


canvas = Canvas(top, width=WINDOW, height=.50*WINDOW, background='white')
canvas.create_text(.1*WINDOW,.125*WINDOW,text="Ooo...",font=("Helvetica", 24),tags="text",fill="#0000b0")

canvas.create_text(.15*WINDOW,.375*WINDOW,text="1",font=("Helvetica", 24),tags="countL",fill="#00FFFF")
canvas.create_text(.55*WINDOW,.375*WINDOW,text="2",font=("Helvetica", 24),tags="countR",fill="#FF00FF")

canvas.create_rectangle(.2*WINDOW,.05*WINDOW,.3*WINDOW,.2*WINDOW, tags='rect1', fill='#b00000')
canvas.create_rectangle(.3*WINDOW,.05*WINDOW,.9*WINDOW,.2*WINDOW, tags='rect2', fill='#00b000')

canvas.create_rectangle(.2*WINDOW,.4*WINDOW,.5*WINDOW,.5*WINDOW, tags='rectL', fill='#00FF00', outline='#FFFFFF')
canvas.create_rectangle(.6*WINDOW,.4*WINDOW,.9*WINDOW,.5*WINDOW, tags='rectR', fill='#FFFF00', outline='#FFFFFF')
canvas.pack()


B.pack()
C.pack()

top.after(100,idle,top,canvas)
top.mainloop()