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#!/usr/bin/env python3
# File: logout-manager-trayicon
# License: CC-BY-SA 4.0
# Author: bgstack15
# Startdate: 2020-03-20
# Title: Logout Manager tray icon
# Purpose: An easy menu from the system tray in a panel for a window manager or desktop environment
# History:
# 2020-04-01 update for python 3.8
# Reference:
# icon work https://stackoverflow.com/questions/45162862/how-do-i-set-an-icon-for-the-whole-application-using-pygobject
# button right click must be from "button-press-event" and import Gdk https://python-gtk-3-tutorial.readthedocs.io/en/latest/menus.html
# useful reference https://lazka.github.io/pgi-docs/Gtk-3.0/classes/Button.html#Gtk.Button
# systray info https://github.com/PiSupply/PiJuice/blob/master/Software/Source/src/pijuice_tray.py
# logout-manager-gtk
# how to determine double click https://stackoverflow.com/questions/60009648/is-there-a-better-way-to-handle-double-click-in-pygobject
# interactive python3 shell and help(Gdk.EventType)
# https://developer.gnome.org/gtk3/unstable/GtkWidget.html#GtkWidget-button-press-event
# find running processes https://thispointer.com/python-get-list-of-all-running-processes-and-sort-by-highest-memory-usage/
# send signals https://stackoverflow.com/questions/15080500/how-can-i-send-a-signal-from-a-python-program
# https://docs.python.org/3.8/library/signal.html#module-signal
# Dependencies:
# dep-pip: psutil, distro
# dep-devuan: python3-psutil, python3-distro
import gi, os, re, sys, psutil, signal
from distro import linux_distribution
gi.require_version("Gtk","3.0")
from gi.repository import Gtk
from gi.repository import Gdk
from dotenv import load_dotenv
# all this to load the libpath
try:
defaultdir="/etc/sysconfig"
thisplatform = linux_distribution()[0].lower()
if 'debian' in thisplatform or 'devuan' in thisplatform:
defaultdir="/etc/default"
# load_dotenv keeps existing environment variables as higher precedent
load_dotenv(os.path.join(defaultdir,"logout-manager"))
except:
pass
if 'LOGOUT_MANAGER_LIBPATH' in os.environ:
for i in os.environ['LOGOUT_MANAGER_LIBPATH'].split(":"):
sys.path.append(i)
import lmlib
def is_dryrun():
result = False
try:
if "DRYRUN" in os.environ and os.environ["DRYRUN"] != "": result = True
except:
pass
return result
def run_or_kill_logout_manager():
#print("Run or kill logout manager!")
_lm_is_running = False
lmregex = re.compile("logout-manager.*--from-trayicon")
lmprintregex = re.compile("logout-manager")
thisproc = None
for proc in psutil.process_iter():
try:
cmdline = " ".join(proc.cmdline())
#if lmprintregex.search(cmdline) != None: print("Checking \"" + cmdline + "\"")
if lmregex.search(cmdline) != None:
_lm_is_running = True
thisproc = proc
break
except (psutil.NoSuchProcess, psutil.AccessDenied, psutil.ZombieProcess):
pass
if _lm_is_running:
#print("Stopping the following process.")
#print(thisproc)
os.kill(thisproc.pid,signal.SIGHUP)
else:
# start new instance
#print("Please start a new instance")
# this actually returns the new pid, and we could choose to signal only this pid.
# but we will not at this point.
newpid = os.spawnvp(os.P_NOWAIT,"logout-manager",["logout-manager","--from-trayicon"])
print("spawned",newpid)
class MainIcon(Gtk.StatusIcon):
def __init__(self,config,actions):
Gtk.StatusIcon.__init__(self)
self.config = config
self.actions = actions
self.set_from_icon_name(self.config.get_logout_icon())
loggedin_str = "Logged in as " + str(os.environ["USER"])
tooltiptext = loggedin_str
if is_dryrun():
tooltiptext = "DRYRUN MODE: " + tooltiptext
self.set_tooltip_text(tooltiptext)
self.traymenu = Gtk.Menu()
self.add_action_to_menu("Loc_k",self.config.get_lock_icon(),self.on_lock_menuitem)
self.add_action_to_menu("_Logout",self.config.get_logout_icon(),self.on_logout_menuitem)
self.add_action_to_menu("_Hibernate",self.config.get_hibernate_icon(),self.on_hibernate_menuitem)
self.add_action_to_menu("_Shutdown",self.config.get_shutdown_icon(),self.on_shutdown_menuitem)
self.add_action_to_menu("_Reboot",self.config.get_reboot_icon(),self.on_reboot_menuitem)
# separator
i = Gtk.SeparatorMenuItem.new()
i.show()
self.traymenu.append(i)
# logged in as
i = Gtk.MenuItem.new_with_label(tooltiptext)
i.set_sensitive(False)
i.show()
self.traymenu.append(i)
# hide tray icon
i = Gtk.MenuItem.new_with_mnemonic("Hide _tray icon")
i.show()
i.connect("activate", self.exit)
self.traymenu.append(i)
self.connect("button-press-event", self.on_button_press_event)
self.connect("popup-menu", self.show_menu)
def on_button_press_event(self, b_unknown, event: Gdk.EventButton):
if Gdk.EventType._2BUTTON_PRESS == event.type:
run_or_kill_logout_manager()
def exit(self, widget):
quit()
def show_menu(self, widget, event_button, event_time):
self.traymenu.popup(None, None,
self.position_menu,
self,
event_button,
Gtk.get_current_event_time())
def on_lock_menuitem(self, widget):
self.actions.lock(self.config)
def on_logout_menuitem(self, widget):
self.actions.logout(self.config)
def on_hibernate_menuitem(self, widget):
self.actions.hibernate(self.config)
def on_shutdown_menuitem(self, widget):
self.actions.shutdown(self.config)
def on_reboot_menuitem(self, widget):
self.actions.reboot(self.config)
def add_action_to_menu(self,label_str,icon_str,function_func):
i = Gtk.ImageMenuItem.new_with_mnemonic(label_str)
j = Gtk.Image.new_from_icon_name(icon_str,32)
j.show()
i.set_image(j)
i.set_always_show_image(True)
i.show()
i.connect("activate", function_func)
self.traymenu.append(i)
# load configs
config = lmlib.Initialize_config(os.environ['LOGOUT_MANAGER_CONF'])
actions = lmlib.Actions
icon = MainIcon(config,actions)
Gtk.main()
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