11import tkinter as tk
2- from tkinter import filedialog
3- from tkinter import messagebox
2+ from tkinter import filedialog , messagebox
43from PIL import Image
5- 6- 7- root = tk .Tk ()
8- 9- canvas1 = tk .Canvas (root , width = 300 , height = 250 , bg = 'orange' , relief = 'raised' )
4+ root = tk .Tk () # Tkinter window initialized
5+ root .title ('Converter' ) # Title of the window
6+ canvas1 = tk .Canvas (root , width = 300 , height = 250 , bg = 'orange' , relief = 'raised' )
107canvas1 .pack ()
11- 12- label1 = tk .Label (root , text = 'File Converter' , bg = 'lightsteelblue2' )
8+ label1 = tk .Label (root , text = 'File Converter' , bg = 'lightsteelblue2' ) # giving a title to the screen
139label1 .config (font = ('helvetica' , 20 ))
1410canvas1 .create_window (150 , 60 , window = label1 )
15- root .title ('Converter' )
11+ im1 = None # variable to store path of image
12+ 1613
17- def getJPG ():
14+ def getJPG ():
15+ '''Function to get image location and open it with pillow'''
1816 global im1
19- 2017 import_file_path = filedialog .askopenfilename ()
2118 im1 = Image .open (import_file_path )
22- 23- browseButton_JPG = tk .Button (text = " Import JPEG File " , command = getJPG , bg = 'royalblue' , fg = 'white' , font = ('helvetica' , 12 , 'bold' ))
19+ 20+ 21+ font = ('helvetica' , 12 , 'bold' )
22+ bg = 'royalblue'
23+ fg = 'white'
24+ browseButton_JPG = tk .Button (text = " Import JPEG File " , command = getJPG , bg = bg , fg = fg , font = font ) # Browse button
2425canvas1 .create_window (150 , 130 , window = browseButton_JPG )
2526
26- def convertToPNG ():
27+ 28+ def convertToPNG ():
29+ '''Function to change file extenstion to png and save it to User's prefered location '''
2730 global im1
28- 29- export_file_path = filedialog .asksaveasfilename (defaultextension = '.png' )
30- im1 .save (export_file_path )
31+ if im1 is None :
32+ tk .messagebox .showerror ("Error" , "No File selected" )
33+ else :
34+ export_file_path = filedialog .asksaveasfilename (defaultextension = '.png' )
35+ im1 .save (export_file_path )
3136
32- saveAsButton_PNG = tk .Button (text = 'Convert JPEG to PNG' , command = convertToPNG , bg = 'royalblue' , fg = 'white' , font = ('helvetica' , 12 , 'bold' ))
33- canvas1 .create_window (150 , 180 , window = saveAsButton_PNG )
3437
35- root .mainloop ()
38+ saveAsButton_PNG = tk .Button (text = 'Convert JPEG to PNG' , command = convertToPNG , bg = bg , fg = fg , font = font ) # Convert button
39+ canvas1 .create_window (150 , 180 , window = saveAsButton_PNG )
40+ root .mainloop ()
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