Fixed missing tray icon tooltip

.project

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>brightness-control-applet</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+	</buildSpec>
+	<natures>
+	</natures>
+</projectDescription>

src/init.py

@@ -18,7 +18,7 @@
 # <http://www.gnu.org/licenses/>.
 import sys
 import getpass
-import os
+from os import path, remove, makedirs
 from PySide2 import QtGui, QtCore, QtWidgets
 from PySide2.QtCore import QSize
 from PySide2.QtGui import QIcon
@@ -67,7 +67,7 @@ class MyApplication(QtWidgets.QMainWindow):
         QtWidgets.QMainWindow.__init__(self, parent)
 
         self.tray_menu = None
-        self.tray_icon = 'images/brightness.svg' #None
+        self.tray_icon = 'images/brightness.svg'  # None
         self.display1 = None
         self.display2 = None
         self.license_widget = None
@@ -177,6 +177,7 @@ class MyApplication(QtWidgets.QMainWindow):
         self.tray_icon.connect(
             QtCore.SIGNAL("activated(QSystemTrayIcon::ActivationReason)"), self._icon_activated)
         self.tray_icon.setContextMenu(self.tray_menu)
+        self.tray_icon.setToolTip("Brightness Control")
         self.tray_icon.show()
 
     def _icon_activated(self, reason):
@@ -713,13 +714,13 @@ if __name__ == "__main__":
     if APP.isRunning():
         sys.exit(0)
     WINDOW = MyApplication()
-
+    
-    env_var = os.environ["curr_desktop"]			      
+    env_var = os.environ["curr_desktop"]                  
     if env_var=="XFCE" or env_var=="GNOME" or env_var=="LXDE" or env_var=="LXQT":
         APP.setStyle('gtk')
     else:
         APP.setStyle('kvantum')
+
     APP.setActivationWindow(WINDOW)
-    
     WINDOW.show()
     sys.exit(APP.exec_())