from tkinter import *
from  tkinter  import ttk
from tkinter.filedialog import askopenfilename
from tkinter import scrolledtext

root = Tk()
cb = ttk.Combobox(root)
pb = ttk.Progressbar(root,length=400)
t = scrolledtext.ScrolledText(root)

file_name = StringVar()
page_start = IntVar()
page_stop = IntVar()

def open_file():
    _file_name = askopenfilename()
    file_name.set(_file_name)

language = ["kor","eng","chi_sim"]
def start():
    my_print(file_name.get())
    if file_name.get() == "":
        my_print("null")
    my_print(str(page_start.get()))
    my_print(str(page_stop.get()))
    my_print(language[cb.current()%3])
    pb.step(1)

def my_print(str):
    t.insert(END,str + "\n")
    t.see(END)

def start_gui():
    root.title("PDF OCR")
    Label(root,text="pdf file:").grid(row=1,sticky=W)
    Entry(root,textvariable = file_name,width=55).grid(row=1,column=1,columnspan=3,sticky=W)

    Button(root,text="open",width=10,command = open_file).grid(row=1,column=4)
    Label(root,text="language:").grid(row=2,sticky=W)
    
    cb.grid(row=2,column=1,sticky=W)
    cb["values"] = ("Korean", "English", "Chinese")
    cb.current(0)

    Label(root,text="page range:").grid(row=3,sticky=W)
    
    Entry(root,textvariable = page_start).grid(row=3,column=1,sticky=W)
    #page_start.set(0)
    Label(root,text="~").grid(row=3,column=2)
    
    Entry(root,textvariable = page_stop).grid(row=3,column=3,sticky=W)
    #page_stop.set(0)

    Label(root,text="").grid(row=4)
    Button(root,text="start",width=10,command = start).grid(row=5,column=2)

    Label(root,text="").grid(row=6)
    
    pb.grid(row=7,columnspan=5)
    pb["maximum"] = 100
    pb["value"] = 0
    Label(root,text="").grid(row=8)
    
    t.grid(row=9,column=0,columnspan=5)

    root.mainloop()

if __name__=="__main__":   
    print("start")   
    start_gui()