SafeEyes/safeeyes/__main__.py

343 lines
10 KiB
Python
Executable File

#!/usr/bin/env python3
# Safe Eyes is a utility to remind you to take break frequently
# to protect your eyes from eye strain.
# Copyright (C) 2016 Gobinath
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os, gi, json, shutil, dbus, logging, operator, psutil, sys
from threading import Timer
from dbus.mainloop.glib import DBusGMainLoop
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
from safeeyes.AboutDialog import AboutDialog
from safeeyes.BreakScreen import BreakScreen
from safeeyes.Notification import Notification
from safeeyes.Plugins import Plugins
from safeeyes.SafeEyesCore import SafeEyesCore
from safeeyes.SettingsDialog import SettingsDialog
from safeeyes.TrayIcon import TrayIcon
from safeeyes import Utility
# Define necessary paths
config_file_path = os.path.join(Utility.config_directory, 'safeeyes.json')
style_sheet_path = os.path.join(Utility.config_directory, 'style/safeeyes_style.css')
log_file_path = os.path.join(Utility.config_directory, 'safeeyes.log')
break_screen_glade = os.path.join(Utility.bin_directory, "glade/break_screen.glade")
settings_dialog_glade = os.path.join(Utility.bin_directory, "glade/settings_dialog.glade")
about_dialog_glade = os.path.join(Utility.bin_directory, "glade/about_dialog.glade")
system_config_file_path = os.path.join(Utility.bin_directory, "config/safeeyes.json")
system_style_sheet_path = os.path.join(Utility.bin_directory, "config/style/safeeyes_style.css")
is_active = True
CONFIGURATION_VERSION = 4
SAFE_EYES_VERSION = "1.2.0a9"
"""
Listen to tray icon Settings action and send the signal to Settings dialog.
"""
def show_settings():
logging.info("Show Settings dialog")
able_to_lock_screen = False
if system_lock_command:
able_to_lock_screen = True
settings_dialog = SettingsDialog(config, language, Utility.read_lang_files(), able_to_lock_screen, save_settings, settings_dialog_glade)
settings_dialog.show()
"""
Listen to tray icon About action and send the signal to About dialog.
"""
def show_about():
logging.info("Show About dialog")
about_dialog = AboutDialog(about_dialog_glade, SAFE_EYES_VERSION)
about_dialog.show()
"""
Receive the signal from core and pass it to the Notification.
"""
def show_notification():
if config['strict_break']:
Utility.execute_main_thread(tray_icon.lock_menu)
plugins.pre_notification(context)
notification.show(config['pre_break_warning_time'])
"""
Receive the break signal from core and pass it to the break screen.
"""
def show_alert(message, image_name):
logging.info("Show the break screen")
notification.close()
plugins_data = plugins.pre_break(context)
break_screen.show_message(message, Utility.get_resource_path(image_name), plugins_data)
if config['strict_break'] and is_active:
Utility.execute_main_thread(tray_icon.unlock_menu)
"""
Receive the stop break signal from core and pass it to the break screen.
"""
def close_alert(audible_alert_on):
logging.info("Close the break screen")
if config['enable_screen_lock'] and context['break_type'] == 'long':
# Lock the screen before closing the break screen
Utility.lock_desktop(system_lock_command)
break_screen.close()
if audible_alert_on:
Utility.play_notification()
plugins.post_break(context)
"""
Listen to the tray menu quit action and stop the core, notification and the app itself.
"""
def on_quit():
logging.info("Quit Safe Eyes")
plugins.exit(context)
core.stop()
notification.quite();
Gtk.main_quit()
"""
If the system goes to sleep, Safe Eyes stop the core if it is already active.
If it was active, Safe Eyes will become active after wake up.
"""
def handle_suspend_callback(sleeping):
if sleeping:
# Sleeping / suspending
if is_active:
core.stop()
logging.info("Stopped Safe Eyes due to system suspend")
else:
# Resume from sleep
if is_active:
core.start()
logging.info("Resumed Safe Eyes after system wakeup")
"""
Setup system suspend listener.
"""
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')
"""
Listen to break screen Skip action and send the signal to core.
"""
def on_skipped():
logging.info("User skipped the break")
if config['enable_screen_lock'] and context['break_type'] == 'long' and context.get('count_down', 0) >= config['time_to_screen_lock']:
# Lock the screen before closing the break screen
Utility.lock_desktop(system_lock_command)
core.skip_break()
plugins.post_break(context)
"""
Listen to break screen Postpone action and send the signal to core.
"""
def on_postponed():
logging.info("User postponed the break")
if config['enable_screen_lock'] and context['break_type'] == 'long' and context.get('count_down', 0) >= config['time_to_screen_lock']:
# Lock the screen before closing the break screen
Utility.lock_desktop(system_lock_command)
core.postpone_break()
"""
Listen to Settings dialog Save action and write to the config file.
"""
def save_settings(config):
global language
logging.info("Saving settings to safeeyes.json")
# Stop the Safe Eyes core
if is_active:
core.stop()
# Write the configuration to file
with open(config_file_path, 'w') as config_file:
json.dump(config, config_file, indent=4, sort_keys=True)
# Reload the language translation
language = Utility.load_language(config['language'])
tray_icon.set_labels(language)
logging.info("Initialize SafeEyesCore with modified settings")
# Restart the core and intialize the components
core.initialize(config, language)
break_screen.initialize(config, language)
if is_active:
# 1 sec delay is required to give enough time for core to be stopped
Timer(1.0, core.start).start()
"""
Listen to tray icon enable action and send the signal to core.
"""
def enable_safeeyes():
global is_active
is_active = True
core.start()
"""
Listen to tray icon disable action and send the signal to core.
"""
def disable_safeeyes():
global is_active
is_active = False
core.stop()
"""
Initialize the configuration directory and copy the files to ~/.config directory.
"""
def initialize_config():
global config
config_dir_path = os.path.join(Utility.home_directory, '.config/safeeyes/style')
startup_dir_path = os.path.join(Utility.home_directory, '.config/autostart')
Utility.mkdir(config_dir_path)
if not os.path.isfile(config_file_path):
# Copy the safeeyes.json
shutil.copy2(system_config_file_path, config_file_path)
# Overwrite the startup file only if config file is replaced
Utility.mkdir(startup_dir_path)
try:
os.symlink("/usr/share/applications/safeeyes.desktop", os.path.join(startup_dir_path, "safeeyes.desktop"))
except OSError as exc:
pass
# Copy the safeeyes_style.css
if not os.path.isfile(style_sheet_path):
shutil.copy2(system_style_sheet_path, style_sheet_path)
# Read the configuration
with open(config_file_path) as config_file:
config = json.load(config_file)
"""
Configuration file has a version config_version.
It is used to overwrite the exsiting config file if there is an update.
Earlier versions did not have this attribute so the following method
checks the version and if it mismatches, it will overwrite the exsiting
config files. If the version property is not available, the file is
considered as an older one and replaced by the new configuration file.
"""
def validate_config():
version_mismatch = False
try:
# Check the config version
config_version = config['meta']['config_version']
version_mismatch = config_version is not CONFIGURATION_VERSION
except:
version_mismatch = True
if version_mismatch:
# Remove ~/.config/safeeyes/safeeyes.json file
try:
os.remove(config_file_path)
except:
pass
# Remove ~/.config/safeeyes/style/safeeyes_style.css file
try:
os.remove(style_sheet_path)
except:
pass
# Remove startup script
try:
os.remove(os.path.join(Utility.home_directory, '.config/autostart/safeeyes.desktop'))
except:
pass
# Create config files again
initialize_config()
def running():
'''
Check if SafeEyes is already running.
'''
process_count = 0
for proc in psutil.process_iter():
try:
# Check if safeeyes is in process arguments
cmd_line = proc.cmdline()
if 'python3' in cmd_line[0] and 'safeeyes' in cmd_line[1]:
process_count += 1
if process_count > 1:
return True
# Ignore if process does not exist or does not have command line args
except (IndexError, psutil.NoSuchProcess):
pass
return False
def main():
initialize_config()
# Configure logging. Reset with every restart
logging.basicConfig(format='%(asctime)s [%(levelname)s]:[%(threadName)s] %(message)s', filename=log_file_path, filemode='w', level=logging.INFO)
logging.info("Starting Safe Eyes")
if not running():
validate_config()
global break_screen
global core
global notification
global tray_icon
global language
global context
global plugins
global system_lock_command
context = {}
language = Utility.load_language(config['language'])
# Get the lock command only one time
if config['lock_screen_command']:
system_lock_command = config['lock_screen_command']
else:
system_lock_command = Utility.lock_screen_command()
# Initialize the Safe Eyes Context
context['version'] = SAFE_EYES_VERSION
tray_icon = TrayIcon(config, language, show_settings, show_about, enable_safeeyes, disable_safeeyes, on_quit)
break_screen = BreakScreen(on_skipped, on_postponed, break_screen_glade, style_sheet_path)
break_screen.initialize(config, language)
notification = Notification(language)
plugins = Plugins(config)
core = SafeEyesCore(context, show_notification, show_alert, close_alert, break_screen.show_count_down, tray_icon.next_break_time)
core.initialize(config, language)
plugins.start(context) # Call the start method of all plugins
core.start()
handle_system_suspend()
Gtk.main()
else:
logging.info('SafeEyes is already running')
sys.exit(0)
if __name__ == '__main__':
main()