#!/usr/bin/env python # Safe Eyes is a utility to remind you to take break frequently # to protect your eyes from eye strain. # Copyright (C) 2017 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 . """ SafeEyes connects all the individual components and provide the complete application. """ import atexit import logging from threading import Timer import dbus import gi from dbus.mainloop.glib import DBusGMainLoop from safeeyes import Utility from safeeyes.AboutDialog import AboutDialog from safeeyes.BreakScreen import BreakScreen from safeeyes.model import State from safeeyes.rpc import RPCServer from safeeyes.PluginManager import PluginManager from safeeyes.SafeEyesCore import SafeEyesCore from safeeyes.settings import SettingsDialog gi.require_version('Gtk', '3.0') from gi.repository import Gtk SAFE_EYES_VERSION = "2.0.2" class SafeEyes(object): """ This class represents a runnable Safe Eyes instance. """ def __init__(self, system_locale, config): self.active = False self.break_screen = None self.safe_eyes_core = None self.config = config self.context = {} self.plugins_manager = None self.settings_dialog_active = False self.rpc_server = None self._status = '' # Initialize the Safe Eyes Context self.context['version'] = SAFE_EYES_VERSION self.context['desktop'] = Utility.desktop_environment() self.context['locale'] = system_locale self.context['api'] = {} self.context['api']['show_settings'] = lambda: Utility.execute_main_thread(self.show_settings) self.context['api']['show_about'] = lambda: Utility.execute_main_thread(self.show_about) self.context['api']['enable_safeeyes'] = lambda next_break_time=-1: Utility.execute_main_thread(self.enable_safeeyes, next_break_time) self.context['api']['disable_safeeyes'] = lambda status: Utility.execute_main_thread(self.disable_safeeyes, status) self.context['api']['status'] = self.status self.context['api']['quit'] = lambda: Utility.execute_main_thread(self.quit) if self.config.get('persist_state'): self.context['session'] = Utility.open_session() else: self.context['session'] = {'plugin': {}} self.break_screen = BreakScreen(self.context, self.on_skipped, self.on_postponed, Utility.STYLE_SHEET_PATH) self.break_screen.initialize(self.config) self.plugins_manager = PluginManager(self.context, self.config) self.safe_eyes_core = SafeEyesCore(self.context) self.safe_eyes_core.on_pre_break += self.plugins_manager.pre_break self.safe_eyes_core.on_start_break += self.start_break self.safe_eyes_core.on_count_down += self.countdown self.safe_eyes_core.on_stop_break += self.stop_break self.safe_eyes_core.on_update_next_break += self.update_next_break self.safe_eyes_core.initialize(self.config) self.context['api']['take_break'] = lambda: Utility.execute_main_thread(self.safe_eyes_core.take_break) self.context['api']['has_breaks'] = self.safe_eyes_core.has_breaks self.plugins_manager.init(self.context, self.config) atexit.register(self.persist_session) self.rpc_server = RPCServer(self.config.get('rpc_port'), self.context) self.rpc_server.start() def start(self): """ Start Safe Eyes """ if self.safe_eyes_core.has_breaks(): self.active = True self.context['state'] = State.START self.plugins_manager.start() # Call the start method of all plugins self.safe_eyes_core.start() self.handle_system_suspend() def show_settings(self): """ Listen to tray icon Settings action and send the signal to Settings dialog. """ if not self.settings_dialog_active: logging.info("Show Settings dialog") self.settings_dialog_active = True settings_dialog = SettingsDialog(self.config, self.save_settings) settings_dialog.show() def show_about(self): """ Listen to tray icon About action and send the signal to About dialog. """ logging.info("Show About dialog") about_dialog = AboutDialog(SAFE_EYES_VERSION) about_dialog.show() def quit(self): """ Listen to the tray menu quit action and stop the core, notification and the app itself. """ logging.info("Quit Safe Eyes") self.context['state'] = State.QUIT self.plugins_manager.stop() self.safe_eyes_core.stop() self.plugins_manager.exit() self.rpc_server.stop() Gtk.main_quit() def handle_suspend_callback(self, sleeping): """ 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. """ if sleeping: # Sleeping / suspending if self.active: logging.info("Stop Safe Eyes due to system suspend") self.plugins_manager.stop() self.safe_eyes_core.stop() else: # Resume from sleep if self.active and self.safe_eyes_core.has_breaks(): logging.info("Resume Safe Eyes after system wakeup") self.plugins_manager.start() self.safe_eyes_core.start() def handle_system_suspend(self): """ Setup system suspend listener. """ DBusGMainLoop(set_as_default=True) bus = dbus.SystemBus() bus.add_signal_receiver(self.handle_suspend_callback, 'PrepareForSleep', 'org.freedesktop.login1.Manager', 'org.freedesktop.login1') def on_skipped(self): """ Listen to break screen Skip action and send the signal to core. """ logging.info("User skipped the break") self.safe_eyes_core.skip() self.plugins_manager.stop_break() def on_postponed(self): """ Listen to break screen Postpone action and send the signal to core. """ logging.info("User postponed the break") self.safe_eyes_core.postpone() self.plugins_manager.stop_break() def save_settings(self, config): """ Listen to Settings dialog Save action and write to the config file. """ self.settings_dialog_active = False logging.info("Saving settings to safeeyes.json") # Stop the Safe Eyes core if self.active: self.plugins_manager.stop() self.safe_eyes_core.stop() # Write the configuration to file config.save() self.persist_session() logging.info("Initialize SafeEyesCore with modified settings") # Restart the core and intialize the components self.config = config self.safe_eyes_core.initialize(config) self.break_screen.initialize(config) self.plugins_manager.init(self.context, self.config) if self.active and self.safe_eyes_core.has_breaks(): # 1 sec delay is required to give enough time for core to be stopped Timer(1.0, self.safe_eyes_core.start).start() self.plugins_manager.start() def enable_safeeyes(self, scheduled_next_break_time=-1): """ Listen to tray icon enable action and send the signal to core. """ if not self.active and self.safe_eyes_core.has_breaks(): self.active = True self.safe_eyes_core.start(scheduled_next_break_time) self.plugins_manager.start() def disable_safeeyes(self, status=None): """ Listen to tray icon disable action and send the signal to core. """ if self.active: self.active = False self.plugins_manager.stop() self.safe_eyes_core.stop() if status is None: status = _('Disabled until restart') self._status = status def start_break(self, break_obj): """ Pass the break information to plugins and break screen. """ if not self.plugins_manager.start_break(break_obj): return False # Get the HTML widgets content from plugins widget = self.plugins_manager.get_break_screen_widgets(break_obj) self.break_screen.show_message(break_obj, widget) return True def countdown(self, countdown, seconds): """ Pass the countdown to plugins and break screen. """ self.break_screen.show_count_down(countdown, seconds) self.plugins_manager.countdown(countdown, seconds) return True def update_next_break(self, break_obj, break_time): """ Update the next break to plugins and save the session. """ self.plugins_manager.update_next_break(break_obj, break_time) self._status = _('Next break at %s') % (Utility.format_time(break_time)) if self.config.get('persist_state'): Utility.write_json(Utility.SESSION_FILE_PATH, self.context['session']) def stop_break(self): """ Stop the current break. """ self.break_screen.close() self.plugins_manager.stop_break() return True def take_break(self): """ Take a break now. """ self.safe_eyes_core.take_break() def status(self): """ Return the status of Safe Eyes. """ return self._status def persist_session(self): """ Save the session object to the session file. """ if self.config.get('persist_state'): Utility.write_json(Utility.SESSION_FILE_PATH, self.context['session']) else: Utility.delete(Utility.SESSION_FILE_PATH)