open context menu also with left click on tray icon

src/octotray.py

 from os import path
 from PyQt5 import QtWidgets, QtGui, QtCore, QtNetwork
 from PyQt5.QtWidgets import QSystemTrayIcon, QAction, QMenu, QMessageBox, QWidget, QLabel, QVBoxLayout, QHBoxLayout, QDesktopWidget, QSizePolicy, QSlider, QLayout, QTableWidget, QTableWidgetItem, QPushButton
-from PyQt5.QtGui import QIcon, QPixmap, QImageReader, QDesktopServices, QFontDatabase
+from PyQt5.QtGui import QIcon, QPixmap, QImageReader, QDesktopServices, QFontDatabase, QCursor
 from PyQt5.QtCore import QCoreApplication, QSettings, QUrl, QTimer, QSize, Qt, QSettings
 
 class SettingsWindow(QWidget):
         self.trayIcon = QSystemTrayIcon(self.icon)
         self.trayIcon.setToolTip(self.name + " " + self.version)
         self.trayIcon.setContextMenu(self.menu)
+        self.trayIcon.activated.connect(self.showHide)
         self.trayIcon.setVisible(True)
 
+    def showHide(self, activationReason):
+        if activationReason == QSystemTrayIcon.Trigger:
+            self.menu.popup(QCursor.pos())
+
     def readSettings(self):
         settings = QSettings(self.vendor, self.name)
         printers = []