__Version__ = 1.0
#Imports tkinter module for the GUI
from tkinter import *

#creates the initial GUI
root = Tk()
root.title('Converter')
#root.iconbitmap(default='pennicon.ico')
Label(text = 'Penn United Converter', bg='white', fg='blue').grid(row=1, column=1)
Label(text = ' ').grid(row=2)
#Creates the Label next to the entry box to let the  user know what to enter
Label(text = 'Units in MM', bg = "white", fg='blue' ).grid(row=3)
#Function for clearing the entry fields

def clear(entry):
    entry.delete(0, END)

#Function to convert MM to inches
def mm_to_inch(amt_in_mm):
    mm_per_inch = 25.4
    return amt_in_mm / mm_per_inch

#Function to count the number of characters after the decimal place
def digits_after_decimal_point(number):
    try:
        return (len(number.split('.')[1].strip()))
    except IndexError:
        return 0

#Function for taking user input and converting it
def convert_user_input(event):
    user_input = c.get()
    try:#Checks for a ValueError
        amt_in_mm = float(user_input)
    except ValueError:#If ValueError found clears the entry box and returns to main
        clear(c)
        return
    amt_in_inches = mm_to_inch(amt_in_mm)
    decimal_count = (digits_after_decimal_point(user_input))
    if decimal_count <= 2:#checks decimal count to see what place the number needs taken out to
        amt_in_inches = ("{0:.3f}".format(amt_in_inches))
    else:
        amt_in_inches = ("{0:.4f}".format(amt_in_inches))
    v.set(amt_in_inches)
    root.clipboard_clear()
    root.clipboard_append(amt_in_inches)
    clear(c)
#Entry box for conversion
c = Entry(root, width = 10)
c.bind('<Return>', convert_user_input)
c.grid(row=3, column=1)
v = StringVar()
Label(textvariable = v, width = 10).grid(row=4, column=1)
#Label to let user know where to enter Surface input
Label(text = 'RA Finish(MM)', bg = "white", fg='blue').grid(row=5)

#Function for converting RA Finishes
def surface(RA):
    try:#Trys for value error and defines variables
        float_roughness = float(RA)
        finish = (float_roughness / 25.4) * 1000
        results_finish = "{0:.0f}".format(finish)
    except ValueError:
        clear(s)
        return
    root.clipboard_clear()
    root.clipboard_append(results_finish)
    var.set(results_finish)
    clear(s)
#Takes input for RA surface finsih conversion
def surface_user_input(event):
    roughness = s.get()
    surface(roughness)
#Entry box for RA Finish input
s = Entry(root, width = 10)
s.bind('<Return>', surface_user_input)
var = StringVar()
s.grid(row = 5, column = 1)
Label(textvariable=var, width = 10).grid(row=6, column=1)
#Label for Rz Finish input
Label(text = 'Rz Finish', bg='white', fg='blue').grid(row=7, column=0)
#Dictionary for Rz finish's
Rz_dict = { '1' : '4', '2' : '8', '3' : '16', '4' : '16', '5' : '16',
'6' : '32', '7' : '32', '8' : '32', '10' : '32', '16' : '64', '25' : '125',
'32' : '125', '63' : '250'
}

#Function to get the correct Rz Value
def Rz_Finish(event):
    Rz = str(r.get())
    Rz_RA = Rz_dict.get(Rz)
    Rz_var.set(Rz_RA)
    clear(r)
#Rz finish input box
r = Entry(root, width = 10)
r.bind('<Return>',Rz_Finish)
Rz_var = StringVar()
r.grid(row=7, column=1)
Label(textvariable=Rz_var, width = 20).grid(row=8, column=1)
#Label for N type finish
Label(text='N Type Finish', bg='white', fg='blue').grid(row=9, column=0)
#N type dictionary
N_type_dict = { '1' : '1', '2' : '2', '3' : '4', '4' : '8', '5' : '16','6' : '32',
'7' : '63', '8' : '125', '9' : '250', '10' : '500', '11' : '1000', '12' : '2000'
}

def N_type_finish(event):
    N_type = str(n.get())
    N_converted = N_type_dict.get(N_type)
    N_var.set(N_converted)
    clear(n)
#Entry box for N Type Finish
n = Entry(root, width =10)
n.bind('<Return>',N_type_finish)
N_var = StringVar()
n.grid(row=9, column=1)
Label(textvariable=N_var, width=10).grid(row=10, column=1)

#Function for the close button
def quit():
    global root
    root.destroy()


root.mainloop()

Button(root, text='Close', command=quit).grid(row = 11, column = 4)

main()