1  import PIL.ImageQt
 2  import PyQt6.QtGui
 3  import PyQt6.QtWidgets
 4  import json
 5  import os
 6  import qrcode
 7  
 8  
 9  def json_file_read(filename):
10      """reads filename with json inside and returns file data as dict
11  
12      param filename: filename to read
13      type filename: str
14  
15      return: return dict of data from json file, empty dict returned if error in reading file or json
16      rtype: dict
17      """
18      try:
19          with open(file=filename, mode='r') as file:
20              data = json.load(file)
21      except Exception as e:
22          print("Oops Error: {}".format(e))
23          data = {}
24          return data
25      return data
26  
27  
28  class QRGuiApp:
29      """QT App to generate and show QR Codes"""
30  
31      def __init__(self):
32          """QT App init"""
33          # read config
34          filename = "{}/{}".format(os.getcwd(), "config/config.json")
35          self.data = json_file_read(filename)
36  
37          # init qt app
38          self.app = PyQt6.QtWidgets.QApplication([])
39          self.main_window = PyQt6.QtWidgets.QWidget()
40          if self.data.get("icon", False):
41              self.main_window.setWindowIcon(PyQt6.QtGui.QIcon(self.data.get("icon", False)))
42          self.main_window.setWindowTitle(self.data.get("main_window_name", "TGA"))
43  
44          # create layout with textbox, button, label, button
45          layout = PyQt6.QtWidgets.QVBoxLayout()
46  
47          self.textbox = PyQt6.QtWidgets.QLineEdit(self.data.get("textbox", "https://vaultcity.net"))
48          layout.addWidget(self.textbox)
49  
50          # add button to layout and connect button to function
51          button_generate = PyQt6.QtWidgets.QPushButton("Generate")
52          button_generate.clicked.connect(self.on_click_button_gen)
53          layout.addWidget(button_generate)
54  
55          self.img_label = PyQt6.QtWidgets.QLabel()
56          self.on_click_button_gen()
57          layout.addWidget(self.img_label)
58  
59          # add button to layout and connect button to function
60          button_save = PyQt6.QtWidgets.QPushButton("Save")
61          button_save.clicked.connect(self.on_click_button_save)
62          layout.addWidget(button_save)
63  
64          # set generated layout on main window
65          self.main_window.setLayout(layout)
66  
67      def on_click_button_gen(self):
68          """method to run after generate button clicked
69  
70          generates new qr code from textbox and shows it
71          """
72          img = qrcode.make(self.textbox.text())
73          pixmap = PyQt6.QtGui.QPixmap.fromImage(PIL.ImageQt.ImageQt(img))
74          self.img_label.setPixmap(pixmap)
75  
76      def on_click_button_save(self):
77          """method to run after save button is clicked
78  
79          open save file dialog and save qr code image
80          """
81          self.on_click_button_gen()
82          filename = PyQt6.QtWidgets.QFileDialog.getSaveFileName(None, "Save QR Code",
83                                                                 self.data.get("filename", "test.png"),
84                                                                 "Image File (*.png)")  # filename as String
85          if filename:
86              img = qrcode.make(self.textbox.text())
87              img.save("{}".format(filename[0]))
88  
89      def run(self):
90          """run qt app"""
91          self.main_window.show()
92          self.app.exec()
93  
94  
95  if __name__ == '__main__':
96      """main - just to instantiate qt app class and run it"""
97      gui = QRGuiApp()
98      gui.run()