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#!/usr/bin/env python3
# File: logout-manager-gtk
# License: CC-BY-SA 4.0
# Author: bgstack15
# Startdate: 2019-06-01
# Title: GTK3 based logout manager
# Purpose: Primarily for fluxbox, this tool provides a graphical menu for various session control commands like shutdown, logout, and reboot
# History:
# Usage:
# This is a bit for reference, but also to provide myself a little shutdown options menu, like xfce4, because fluxbox doesn't really provide one.
# Reference:
# https://www.linuxquestions.org/questions/slackware-14/how-do-i-run-menu-and-logout-from-the-command-line-in-fluxbox-864919/
# /mnt/public/work/python/hotplug2/
# icon handling https://python-gtk-3-tutorial.readthedocs.io/en/latest/iconview.html
# accelerator keys https://askubuntu.com/questions/655452/python-gtk3-keyboard-accelerators
# gtk3 widget signals https://developer.gnome.org/gtk3/unstable/GtkWidget.html#GtkWidget-button-press-event
# /usr/share/wicd/gtk/gui.py netentry.py wicd.ui
# combined with next ref: scale down valid icon https://stackoverflow.com/questions/42800482/how-to-set-size-of-a-gtk-image-in-python
# https://stackoverflow.com/questions/6090241/how-can-i-get-the-full-file-path-of-an-icon-name
# use custom icon theme https://lazka.github.io/pgi-docs/Gtk-3.0/classes/IconTheme.html#Gtk.IconTheme.set_custom_theme
# https://stackoverflow.com/questions/4090804/how-can-i-pass-variables-between-two-classes-windows-in-pygtk
# Improve:
# actually execute the commands
# only show debug info when DEBUG=1 or similar.
# support global conf file, and user conf file
# far future: provide graphical way to change commands run
# Dependencies:
# dep-devuan: python3-dotenv
# Documentation:
import gi, os, platform, sys
from distro import linux_distribution
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk
from gi.repository import Gdk
from gi.repository.GdkPixbuf import Pixbuf
from pathlib import Path
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)
sys.path.append("/usr/share/logout-manager")
import lmlib
# graphical classes and functions
def get_scaled_icon(icon_name, size=24, fallback_icon_name = "", icon_theme = "default"):
# return a Gtk.Image.new_from_pixbuf
# ripped from https://stackoverflow.com/questions/42800482/how-to-set-size-of-a-gtk-image-in-python and combined with https://stackoverflow.com/questions/6090241/how-can-i-get-the-full-file-path-of-an-icon-name
# further ref for lookup_icon function: https://lazka.github.io/pgi-docs/Gtk-3.0/flags.html#Gtk.IconLookupFlags
# if a file exists by the specific name, use it.
if Path(icon_name).is_file():
iconfilename = icon_name
else:
if icon_theme != "default":
this_theme = Gtk.IconTheme.new()
this_theme.set_custom_theme(icon_theme)
else:
this_theme = Gtk.IconTheme.get_default()
try:
icon_info = this_theme.lookup_icon(icon_name, size, 0)
iconfilename = icon_info.get_filename()
except:
try:
icon_info = this_theme.lookup_icon(fallback_icon_name, size, 0)
iconfilename = icon_info.get_filename()
except:
# no icon in the current theme. Try a hard-coded fallback:
try:
# if debuglev 3
print("Error: could not find default icon for", icon_name+", so using fallback.")
this_theme = Gtk.IconTheme.new()
this_theme.set_custom_theme("Numix-Circle")
icon_info = this_theme.lookup_icon(icon_name, size, 0)
iconfilename = icon_info.get_filename()
except:
print("Error: Could not find any icon for", icon_name)
return None
#print(iconfilename)
return Gtk.Image.new_from_pixbuf(Pixbuf.new_from_file_at_scale(
filename=iconfilename,
width=size, height=size, preserve_aspect_ratio=True))
class MainWindow(Gtk.Window):
def __init__(self, config, actions):
self.actions = actions
self.config = config
Gtk.Window.__init__(self, title="Log out options")
# for window icon
liststore = Gtk.ListStore(Pixbuf, str)
iconview = Gtk.IconView.new()
iconview.set_model(liststore)
iconview.set_pixbuf_column(0)
iconview.set_text_column(1)
pixbuf24 = Gtk.IconTheme.get_default().load_icon(config.application_icon, 24, 0)
pixbuf32 = Gtk.IconTheme.get_default().load_icon(config.application_icon, 32, 0)
pixbuf48 = Gtk.IconTheme.get_default().load_icon(config.application_icon, 48, 0)
pixbuf64 = Gtk.IconTheme.get_default().load_icon(config.application_icon, 64, 0)
pixbuf96 = Gtk.IconTheme.get_default().load_icon(config.application_icon, 96, 0)
self.set_icon_list([pixbuf24, pixbuf32, pixbuf48, pixbuf64, pixbuf96]);
# accel is for when you are not using the "set_use_underline" function.
#accel = Gtk.AccelGroup()
#accel.connect(Gdk.keyval_from_name('D'), Gdk.ModifierType.MOD1_MASK, 0, self.on_button2_accel)
#self.add_accel_group(accel)
# buttons
self.grid = Gtk.Grid()
self.add(self.grid)
self.button0 = Gtk.Button(label="Loc_k")
self.button0.connect("button-press-event", self.on_button0_press_event)
self.button0.connect("activate", self.on_button0_press_event) # activate covers ALT+L action and spacebar when selected
self.buttonicon0 = get_scaled_icon(config.get_lock_icon(), config.get_icon_size(), config.get_lock_fallback_icon(), config.get_icon_theme())
self.button0.set_image(self.buttonicon0)
self.button0.set_tooltip_text("Hide session and require authentication to return to it")
self.button0.set_always_show_image(True)
self.button0.set_use_underline(True)
self.grid.add(self.button0)
self.button1 = Gtk.Button(label="_Logout")
self.button1.connect("button-press-event", self.on_button1_press_event)
self.button1.connect("activate", self.on_button1_press_event) # activate covers ALT+L action and spacebar when selected
self.buttonicon1 = get_scaled_icon(config.get_logout_icon(), config.get_icon_size(), config.get_logout_fallback_icon(), config.get_icon_theme())
self.button1.set_image(self.buttonicon1)
self.button1.set_tooltip_text("Close the current user session")
self.button1.set_always_show_image(True)
self.button1.set_use_underline(True)
self.grid.add(self.button1)
self.buttonHibernate = Gtk.Button(label="_Hibernate")
self.buttonHibernate.connect("button-press-event", self.on_buttonHibernate_press_event)
self.buttonHibernate.connect("activate", self.on_buttonHibernate_press_event) # activate covers ALT+L action and spacebar when selected
#self.buttoniconHibernate = Gtk.Image()
#self.buttoniconHibernate.set_from_icon_name("system-hibernate", 24)
self.buttoniconHibernate = get_scaled_icon(config.get_hibernate_icon(), config.get_icon_size(), config.get_hibernate_fallback_icon(), config.get_icon_theme())
self.buttonHibernate.set_image(self.buttoniconHibernate)
self.buttonHibernate.set_tooltip_text("Save state to disk and power off")
self.buttonHibernate.set_always_show_image(True)
self.buttonHibernate.set_use_underline(True)
self.buttonHibernate.set_sensitive(True if config.get_can_hibernate() else False)
self.grid.add(self.buttonHibernate)
self.button2 = Gtk.Button(label="_Shutdown")
self.button2.connect("button-press-event", self.on_button2_press_event)
self.button2.connect("activate", self.on_button2_accel)
# unnecessary because the "activate" suffices above.
#self.button2.connect("mnemonic-activate", self.on_button2_accel)
self.buttonicon2 = Gtk.Image()
self.buttonicon2 = get_scaled_icon(config.get_shutdown_icon(), config.get_icon_size(), config.get_shutdown_fallback_icon(), config.get_icon_theme())
self.button2.set_image(self.buttonicon2)
self.button2.set_tooltip_text("Power off the computer")
self.button2.set_always_show_image(True)
self.button2.set_use_underline(True)
self.grid.add(self.button2)
self.button3 = Gtk.Button(label="_Reboot")
self.button3.connect("button-press-event", self.on_button3_press_event)
self.button3.connect("activate", self.on_button3_press_event)
self.buttonicon3 = Gtk.Image()
self.buttonicon3 = get_scaled_icon(config.get_reboot_icon(), config.get_icon_size(), config.get_reboot_fallback_icon(), config.get_icon_theme())
self.button3.set_image(self.buttonicon3)
self.button3.set_tooltip_text("Reboot the computer back to the login screen")
self.button3.set_always_show_image(True)
self.button3.set_use_underline(True)
self.grid.add(self.button3)
self.button4 = Gtk.Button(label="_Cancel")
self.button4.connect("button-press-event", self.on_button4_press_event)
self.button4.connect("activate", self.on_button4_press_event)
self.button4.set_tooltip_text("Do nothing; just close this window")
self.button4.set_use_underline(True)
self.grid.attach(self.button4, 0, 1, 8, 1)
# hibernate button
def on_buttonHibernate_press_event(self, *args):
self.do_hibernate(self.buttonHibernate)
# lock button
def on_button0_press_event(self, *args):
self.do_lock(self.button0)
# logout button
def on_button1_press_event(self, *args):
self.do_logout(self.button1)
# shutdown button
def on_button2_press_event(self, widget, event):
# check if left or right click
if event.type == Gdk.EventType.BUTTON_PRESS:
if event.button == 1:
self.do_shutdown(widget)
# eventbutton == 3 is the right-click, and its reference is my hello3.py
#elif event.button == 3:
# self.on_button1_right_clicked(widget)
# global accelerator key, when not using the set_use_underline function
## shutdown button from accelerator key
#def on_button2_accel(self, *args):
# self.do_shutdown(self.button2)
# accelerator key from set_use_underline function
# shutdown button from accelerator key
def on_button2_accel(self, *args):
self.do_shutdown(self.button2)
# reboot button
def on_button3_press_event(self, *args):
self.do_reboot(self.button3)
# cancel button
def on_button4_press_event(self, *args):
self.cancel(self.button4)
def do_shutdown(self, *args):
#print(dir(self.props))
self.actions.shutdown(self.config)
def do_hibernate(self, widget):
self.actions.hibernate(self.config)
def do_lock(self, widget):
self.actions.lock(self.config)
def do_logout(self, widget):
self.actions.logout(self.config)
def do_reboot(self, widget):
self.actions.reboot(self.config)
def cancel(self, widget):
print("Cancel any logout action.")
Gtk.main_quit()
# load configs
config = lmlib.Initialize_config(os.environ['LOGOUT_MANAGER_CONF'])
actions = lmlib.Actions
# MAIN LOOP
win = MainWindow(config, actions)
win.connect("destroy", Gtk.main_quit)
win.show_all()
Gtk.main()
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