Pause and resume during system suspend

README.md

@@ -23,11 +23,11 @@ Manual installation is not tested in any systems. I will update this page as soo
 
 1: Install the dependencies:
 
-   * Arch: `hicolor-icon-theme`, `libappindicator-gtk3`, `xorg-xprop`, `python2-xlib` and `python2-gobject`
+   * Arch: `hicolor-icon-theme`, `libappindicator-gtk3`, `xorg-xprop`, `python2-xlib`, `python2-gobject` and `python2-dbus`
 
-   * Debian: `gir1.2-appindicator3-0.1`, `python-xlib`, `python-gobject` and `python-gi`
+   * Debian: `gir1.2-appindicator3-0.1`, `python-xlib`, `python-gobject`, `python-gi` and `python-dbus`
 
-   * Fedora 24: `libappindicator-gtk3`, `python-xlib`, `python-gobject` and `xorg-x11-utils`
+   * Fedora 24: `libappindicator-gtk3`, `python-xlib`, `python-gobject`, `xorg-x11-utils` and `python-dbus`
 
 2: Download and extract [safeeyes.tar.gz](https://github.com/slgobinath/SafeEyes/releases/download/v1.0.7/safeeyes.tar.gz) into `/`: `sudo tar -xzvf safeeyes.tar.gz -C /`
 

safeeyes/debian/control

@@ -8,7 +8,7 @@ Homepage: https://github.com/slgobinath/SafeEyes/
 
 Package: safeeyes
 Architecture: any
-Depends: gir1.2-appindicator3-0.1, python (>= 2.7.0), python-xlib, python-gi
+Depends: gir1.2-appindicator3-0.1, python (>= 2.7.0), python-xlib, python-gi, python-dbus
 Description: Safe Eyes
  Safe Eyes is a simple tool to remind you to take periodic breaks for your eyes. This is essential for anyone spending more time on the computer to avoid eye strain and other physical problems.
  .

safeeyes/safeeyes/safeeyes

@@ -23,11 +23,15 @@ import gi
 import json
 import shutil
 import errno
+import dbus
+from dbus.mainloop.glib import DBusGMainLoop
+
 from BreakScreen import BreakScreen
 from TrayIcon import TrayIcon
 from SettingsDialog import SettingsDialog
 from SafeEyesCore import SafeEyesCore
 from Notification import Notification
+
 gi.require_version('Gtk', '3.0')
 from gi.repository import Gtk
 
@@ -40,6 +44,8 @@ settings_dialog_glade = os.path.join(bin_directory, "glade/settings_dialog.glade
 system_config_file_path = os.path.join(bin_directory, "config/safeeyes.json")
 system_style_sheet_path = os.path.join(bin_directory, "config/style/safeeyes_style.css")
 
+is_active = True
+
 def show_settings():
 	settings_dialog = SettingsDialog(config, save_settings, settings_dialog_glade)
 	settings_dialog.show()
@@ -72,6 +78,21 @@ def on_quite():
 	notification.quite();
 	Gtk.main_quit()
 
+def handle_suspend_callback(sleeping):
+	if sleeping:
+		# Sleeping / suspending
+		if is_active:
+			core.stop()
+	else:
+		# Resume from sleep
+		if is_active:
+			core.start()
+
+def handle_system_suspend():
+	DBusGMainLoop(set_as_default=True)
+	bus = dbus.SystemBus()
+	bus.add_signal_receiver(handle_suspend_callback, 'PrepareForSleep', 'org.freedesktop.login1.Manager', 'org.freedesktop.login1')
+
 def on_skipped():
 	# Hide and show tray icon if strict break is on
 	# This feature is required because, by disabling Safe Eyes,
@@ -90,9 +111,11 @@ def save_settings(config):
 	break_screen.initialize(config)
 
 def enable_safeeyes():
+	is_active = True
 	core.toggle_active_state()
 
 def disable_safeeyes():
+	is_active = False
 	core.toggle_active_state()
 
 def prepare_local_config_dir():
@@ -147,6 +170,8 @@ def main():
 	core.start()
 	notification = Notification()
 	
+	handle_system_suspend()
+
 	Gtk.main()
 
 main()