add qrcode gui tutorial

README.md

@@ -250,5 +250,6 @@ This is a repository of all the tutorials of [The Python Code](https://www.thepy
     - [How to Create an Alarm Clock App using Tkinter in Python](https://www.thepythoncode.com/article/build-an-alarm-clock-app-using-tkinter-python). ([code](gui-programming/alarm-clock-app))
     - [How to Build a GUI Voice Recorder App in Python](https://www.thepythoncode.com/article/make-a-gui-voice-recorder-python). ([code](gui-programming/voice-recorder-app))
     - [How to Make a Chess Game with Pygame in Python](https://www.thepythoncode.com/article/make-a-chess-game-using-pygame-in-python). ([code](gui-programming/chess-game))
+    - [How to Build a GUI QR Code Generator and Detector Using Python](https://www.thepythoncode.com/article/make-a-qr-code-generator-and-reader-tkinter-python). ([code](gui-programming/qrcode-generator-reader-gui))
 
 For any feedback, please consider pulling requests.

gui-programming/qrcode-generator-reader-gui/README.md

@@ -0,0 +1 @@
+# [How to Build a GUI QR Code Generator and Detector Using Python](https://www.thepythoncode.com/article/make-a-qr-code-generator-and-reader-tkinter-python)

gui-programming/qrcode-generator-reader-gui/qrcode_generator_detector.py

@@ -0,0 +1,254 @@
+# this imports everything from the tkinter module
+from tkinter import *
+# importing the ttk module from tkinter that's for styling widgets
+from tkinter import ttk
+# importing message boxes like showinfo, showerror, askyesno from tkinter.messagebox
+from tkinter.messagebox import showinfo, showerror, askyesno
+# importing filedialog from tkinter
+from tkinter import filedialog as fd 
+# this imports the qrcode module
+import qrcode
+# this imports the cv2 module
+import cv2
+
+
+
+# the function to close the window
+def close_window():
+    # this will ask the user whether to close or not
+    # if the value is yes/True the window will close
+    if askyesno(title='Close QR Code Generator-Detector', message='Are you sure you want to close the application?'):
+        # this destroys the window
+        window.destroy()
+
+
+
+
+# the function for generating the QR Code
+def generate_qrcode():
+    # getting qrcode data from data_entry via get() function
+    qrcode_data = str(data_entry.get())
+    # getting the qrcode name from the filename_entry via get() function
+    qrcode_name = str(filename_entry.get())
+    # checking if the qrcode_name/filename_entry is empty
+    if qrcode_name == '':
+        # if its empty display an error message to the user
+        showerror(title='Error', message='An error occurred' \
+                   '\nThe following is ' \
+                    'the cause:\n->Empty filename entry field\n' \
+                    'Make sure the filename entry field is filled when generating the QRCode')
+
+    # the else statement will execute when the qrcode_name/filename_entry is filled
+    else:
+        # confirm from the user whether to generate QR code or not
+        if askyesno(title='Confirmation', message=f'Do you want to create a QRCode with the provided information?'):
+            # the try block for generating the QR Code
+            try:
+                # Creating an instance of QRCode class
+                qr = qrcode.QRCode(version = 1, box_size = 6, border = 4)
+                # Adding data to the instance 'qr'
+                qr.add_data(qrcode_data)
+                # 
+                qr.make(fit = True)
+                # the name for the QRCode
+                name = qrcode_name + '.png'
+                # making the QR code
+                qrcode_image = qr.make_image(fill_color = 'black', back_color = 'white')
+                # saving the QR code
+                qrcode_image.save(name)
+                # making the Image variable global
+                global Image
+                # opening the qrcode image file
+                Image = PhotoImage(file=f'{name}')
+                # displaying the image on the canvas via the image label
+                image_label1.config(image=Image)
+                # the button for resetting or clearing the QR code image on the canvas
+                reset_button.config(state=NORMAL, command=reset)
+
+            # this will catch all the errors that might occur
+            except:
+                showerror(title='Error', message='Please provide a valid filename')
+
+# the function for resetting or clearing the image label
+def reset():
+    # confirming if the user wants to reset or not
+    if askyesno(title='Reset', message='Are you sure you want to reset?'):
+        # if yes reset the label
+        image_label1.config(image='')
+        # and disable the button again
+        reset_button.config(state=DISABLED)
+
+
+# the function to open file dialogs  
+def open_dialog():
+    # getting the file name via the askopenfilename() function
+    name = fd.askopenfilename()
+    # deleting every data from the file_entry
+    file_entry.delete(0, END)
+    # inserting the file in the file_entry
+    file_entry.insert(0, name)
+
+
+# the function to detect the QR codes
+def detect_qrcode():
+
+    # getting the image file from the file entry via get() function
+    image_file = file_entry.get()
+    # checking if the image_file is empty
+    if image_file == '':
+        # show error when the image_file entry is empty
+        showerror(title='Error', message='Please provide a QR Code image file to detect')
+
+    # executes when the image_file is not empty
+    else:
+        # code inside the try will detect the QR codes
+        try:
+            # reading the image file with cv2 
+            qr_img = cv2.imread(f'{image_file}')  
+            # using the QRCodeDetector() function  
+            qr_detector = cv2.QRCodeDetector()  
+            # making the qrcodde_image global
+            global qrcode_image
+            # opening the qrcode_image using the PhotoImage
+            qrcode_image = PhotoImage(file=f'{image_file}')
+            # displaying the image via the image label
+            image_label2.config(image=qrcode_image)
+            # using the detectAndDecode() function detect and decode the QR code
+            data, pts, st_code = qr_detector.detectAndDecode(qr_img)  
+            # displaying data on the data_label
+            data_label.config(text=data)
+
+        # this catches any errors that might occur
+        except:
+            # displaying an error message
+            showerror(title='Error', message='An error occurred while detecting data from the provided file' \
+                   '\nThe following could be ' \
+                    'the cause:\n->Wrong image file\n' \
+                    'Make sure the image file is a valid QRCode')
+
+
+
+
+
+# creating the window using the Tk() class
+window = Tk()
+# creates title for the window
+window.title('QR Code Generator-Detector')
+# adding the window's icon
+window.iconbitmap(window, 'icon.ico')
+# dimensions and position of the window
+window.geometry('500x480+440+180')
+# makes the window non-resizable
+window.resizable(height=FALSE, width=FALSE)
+# this is for closing the window via the close_window() function
+window.protocol('WM_DELETE_WINDOW', close_window)
+
+
+
+"""Styles for the widgets, labels, entries, and buttons"""
+# style for the labels
+label_style = ttk.Style()
+label_style.configure('TLabel', foreground='#000000', font=('OCR A Extended', 11))
+
+# style for the entries
+entry_style = ttk.Style()
+entry_style.configure('TEntry', font=('Dotum', 15))
+
+# style for the buttons
+button_style = ttk.Style()
+button_style.configure('TButton', foreground='#000000', font=('DotumChe', 10))
+
+# creating the Notebook widget
+tab_control = ttk.Notebook(window)
+
+# creating the two tabs with the ttk.Frame()
+first_tab = ttk.Frame(tab_control)
+second_tab = ttk.Frame(tab_control)
+
+# adding the two tabs to the Notebook
+tab_control.add(first_tab, text='QR Code Generator')
+tab_control.add(second_tab, text='QR Code Detector')
+# this makes the Notebook fill the entire main window so that its visible
+tab_control.pack(expand=1, fill="both")
+
+
+# creates the canvas for containing all the widgets in the first tab
+first_canvas = Canvas(first_tab, width=500, height=480)
+# packing the canvas to the first tab
+first_canvas.pack()
+
+# creates the canvas for containing all the widgets in the second tab
+second_canvas = Canvas(second_tab, width=500, height=480)
+# packing the canvas to the second tab
+second_canvas.pack()
+
+
+"""Widgets for the first tab"""
+
+# creating an empty label
+image_label1 = Label(window)
+# adding the label to the canvas
+first_canvas.create_window(250, 150, window=image_label1)
+
+# creating a ttk label
+qrdata_label = ttk.Label(window, text='QRcode Data', style='TLabel')
+# creating a ttk entry
+data_entry = ttk.Entry(window, width=55, style='TEntry')
+
+# adding the label to the canvas
+first_canvas.create_window(70, 330, window=qrdata_label)
+# adding the entry to the canvas
+first_canvas.create_window(300, 330, window=data_entry)
+
+# creating a ttk label
+filename_label = ttk.Label(window, text='Filename', style='TLabel')
+# creating a ttk entry
+filename_entry = ttk.Entry(width=55, style='TEntry')
+
+# adding the label to the canvas
+first_canvas.create_window(84, 360, window=filename_label)
+# adding the entry to the canvas
+first_canvas.create_window(300, 360, window=filename_entry)
+
+
+# creating the reset button in a disabled mode
+reset_button = ttk.Button(window, text='Reset', style='TButton', state=DISABLED)
+# creating the generate button
+generate_button = ttk.Button(window, text='Generate QRCode', style='TButton',  command=generate_qrcode)
+
+# adding the reset button to the canvas
+first_canvas.create_window(300, 390, window=reset_button)
+# adding the generate button to the canvas
+first_canvas.create_window(410, 390, window=generate_button)
+
+
+"""Below are the widgets for the second tab"""
+
+# creating the second image label
+image_label2 = Label(window)
+# creating the data label
+data_label = ttk.Label(window)
+
+# adding the second image label to the second_canvas
+second_canvas.create_window(250, 150, window=image_label2)
+# adding the data label to the canvas
+second_canvas.create_window(250, 300, window=data_label)
+
+# creating the file_entry
+file_entry = ttk.Entry(window, width=60, style='TEntry')
+# creating the browse button
+browse_button = ttk.Button(window, text='Browse', style='TButton', command=open_dialog)
+
+# adding the entry to the canvas
+second_canvas.create_window(200, 350, window=file_entry)
+# adding the generate button to the canvas
+second_canvas.create_window(430, 350, window=browse_button)
+
+# creating the detect button
+detect_button = ttk.Button(window, text='Detect QRCode', style='TButton', command=detect_qrcode)
+# adding the detect button to the canvas
+second_canvas.create_window(65, 385, window=detect_button)
+
+
+# run the main window infinitely
+window.mainloop()

gui-programming/qrcode-generator-reader-gui/requirements.txt

@@ -0,0 +1,2 @@
+python-opencv
+qrcode