In case you don't already know, the version 16.04 of Ubuntu LTS OS brought along a couple of new apps, with GNOME Calendar being one of them.
Start Gnome Calendar
You can launch the app from the command line:
as well as through Unity Dash:
But you can't access it from the system tray. Or can we? Well, there's no official way of doing this, but a member of the awesome Ubuntu community has come up with an unofficial solution to this problem.
Jacob Vlijm has created a Python script (in response to this question on AskUbuntu forums) that creates a calendar icon in the system tray, allowing you to launch the gnome-calendar app.
Start Gnome Calendar from System Tray
Here's what you need to do:
Create a Python file (say calendar.py), and copy the following script in it:
import signal import gi gi.require_version('Gtk', '3.0') gi.require_version('AppIndicator3', '0.1') from gi.repository import Gtk, AppIndicator3 import subprocess class Indicator(): def __init__(self): self.app = 'test123' iconpath = "org.gnome.Calendar" self.indicator = AppIndicator3.Indicator.new( self.app, iconpath, AppIndicator3.IndicatorCategory.OTHER) self.indicator.set_status(AppIndicator3.IndicatorStatus.ACTIVE) self.indicator.set_menu(self.create_menu()) def create_menu(self): menu = Gtk.Menu() open_cal = Gtk.MenuItem('Show Calendar') open_cal.connect('activate', self.run_cal) menu.append(open_cal) # separator menu_sep = Gtk.SeparatorMenuItem() menu.append(menu_sep) # quit item_quit = Gtk.MenuItem('Quit') item_quit.connect('activate', self.stop) menu.append(item_quit) menu.show_all() return menu def run_cal(self, source): subprocess.Popen("gnome-calendar") def stop(self, source): Gtk.main_quit() Indicator() signal.signal(signal.SIGINT, signal.SIG_DFL) Gtk.main()
Now, run the script using the following command:
If 'python3' isn't there on your system, you can install it using the following command:
sudo apt install python3-gi
As the script gets executed, you'll notice a new calendar icon in your system tray. Click that icon, and then click the 'Show Calendar' option to launch the gnome-calendar application: