659 lines
22 KiB
Python
659 lines
22 KiB
Python
#!/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 <http://www.gnu.org/licenses/>.
|
|
"""
|
|
This module contains utility functions for Safe Eyes and its plugins.
|
|
"""
|
|
|
|
import errno
|
|
import imp
|
|
import inspect
|
|
import importlib
|
|
import json
|
|
import locale
|
|
import logging
|
|
import os
|
|
import re
|
|
import sys
|
|
import shutil
|
|
import subprocess
|
|
import threading
|
|
from distutils.version import LooseVersion
|
|
from logging.handlers import RotatingFileHandler
|
|
from pathlib import Path
|
|
|
|
import babel.core
|
|
import babel.dates
|
|
import gi
|
|
gi.require_version('Gtk', '3.0')
|
|
from gi.repository import Gtk
|
|
from gi.repository import GLib
|
|
from gi.repository import GdkPixbuf
|
|
|
|
gi.require_version('Gdk', '3.0')
|
|
|
|
BIN_DIRECTORY = os.path.dirname(os.path.realpath(__file__))
|
|
HOME_DIRECTORY = os.environ.get('HOME') or os.path.expanduser('~')
|
|
CONFIG_DIRECTORY = os.path.join(os.environ.get(
|
|
'XDG_CONFIG_HOME') or os.path.join(HOME_DIRECTORY, '.config'), 'safeeyes')
|
|
CONFIG_FILE_PATH = os.path.join(CONFIG_DIRECTORY, 'safeeyes.json')
|
|
CONFIG_RESOURCE = os.path.join(CONFIG_DIRECTORY, 'resource')
|
|
SESSION_FILE_PATH = os.path.join(CONFIG_DIRECTORY, 'session.json')
|
|
STYLE_SHEET_PATH = os.path.join(CONFIG_DIRECTORY, 'style/safeeyes_style.css')
|
|
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")
|
|
LOG_FILE_PATH = os.path.join(HOME_DIRECTORY, 'safeeyes.log')
|
|
SYSTEM_PLUGINS_DIR = os.path.join(BIN_DIRECTORY, 'plugins')
|
|
USER_PLUGINS_DIR = os.path.join(CONFIG_DIRECTORY, 'plugins')
|
|
LOCALE_PATH = os.path.join(BIN_DIRECTORY, 'config/locale')
|
|
SYSTEM_DESKTOP_FILE = os.path.join(BIN_DIRECTORY, "platform/safeeyes.desktop")
|
|
SYSTEM_ICONS = os.path.join(BIN_DIRECTORY, "platform/icons")
|
|
DESKTOP_ENVIRONMENT = None
|
|
IS_WAYLAND = False
|
|
|
|
|
|
def get_resource_path(resource_name):
|
|
"""
|
|
Return the user-defined resource if a system resource is overridden by the user.
|
|
Otherwise, return the system resource. Return None if the specified resource does not exist.
|
|
"""
|
|
if resource_name is None:
|
|
return None
|
|
resource_location = os.path.join(CONFIG_RESOURCE, resource_name)
|
|
if not os.path.isfile(resource_location):
|
|
resource_location = os.path.join(
|
|
BIN_DIRECTORY, 'resource', resource_name)
|
|
if not os.path.isfile(resource_location):
|
|
# Resource not found
|
|
resource_location = None
|
|
|
|
return resource_location
|
|
|
|
|
|
def start_thread(target_function, **args):
|
|
"""
|
|
Execute the function in a separate thread.
|
|
"""
|
|
thread = threading.Thread(target=target_function, name="WorkThread", daemon=False, kwargs=args)
|
|
thread.start()
|
|
|
|
|
|
# def execute_main_thread(target_function, args=None):
|
|
# """
|
|
# Execute the given function in main thread.
|
|
# """
|
|
# if args:
|
|
# GLib.idle_add(lambda: target_function(args))
|
|
# else:
|
|
# GLib.idle_add(target_function)
|
|
|
|
def execute_main_thread(target_function, arg1=None, arg2=None):
|
|
"""
|
|
Execute the given function in main thread.
|
|
"""
|
|
if arg1 is not None and arg2 is not None:
|
|
GLib.idle_add(lambda: target_function(arg1, arg2))
|
|
elif arg1 is not None:
|
|
GLib.idle_add(lambda: target_function(arg1))
|
|
elif arg2 is not None:
|
|
GLib.idle_add(lambda: target_function(arg2))
|
|
else:
|
|
GLib.idle_add(target_function)
|
|
|
|
|
|
def system_locale(category=locale.LC_MESSAGES):
|
|
"""
|
|
Return the system locale. If not available, return en_US.UTF-8.
|
|
"""
|
|
try:
|
|
locale.setlocale(locale.LC_ALL, '')
|
|
sys_locale = locale.getlocale(category)[0]
|
|
if not sys_locale:
|
|
sys_locale = 'en_US.UTF-8'
|
|
return sys_locale
|
|
except BaseException:
|
|
# Some systems does not return proper locale
|
|
return 'en_US.UTF-8'
|
|
|
|
|
|
def format_time(time):
|
|
"""
|
|
Format time based on the system time.
|
|
"""
|
|
sys_locale = system_locale(locale.LC_TIME)
|
|
try:
|
|
return babel.dates.format_time(time, format='short', locale=sys_locale)
|
|
except babel.core.UnknownLocaleError:
|
|
# Some locale types are not supported by the babel library.
|
|
# Use 'en' locale format if the system locale is not supported.
|
|
return babel.dates.format_time(time, format='short', locale='en')
|
|
|
|
|
|
def mkdir(path):
|
|
"""
|
|
Create directory if not exists.
|
|
"""
|
|
try:
|
|
os.makedirs(path)
|
|
except OSError as exc:
|
|
if exc.errno == errno.EEXIST and os.path.isdir(path):
|
|
pass
|
|
else:
|
|
logging.error('Error while creating ' + str(path))
|
|
raise
|
|
|
|
|
|
def load_json(json_path):
|
|
"""
|
|
Load the JSON file from the given path.
|
|
"""
|
|
json_obj = None
|
|
if os.path.isfile(json_path):
|
|
try:
|
|
with open(json_path) as config_file:
|
|
json_obj = json.load(config_file)
|
|
except BaseException:
|
|
pass
|
|
return json_obj
|
|
|
|
|
|
def write_json(json_path, json_obj):
|
|
"""
|
|
Write the JSON object at the given path
|
|
"""
|
|
try:
|
|
with open(json_path, 'w') as json_file:
|
|
json.dump(json_obj, json_file, indent=4, sort_keys=True)
|
|
except BaseException:
|
|
pass
|
|
|
|
|
|
def delete(file_path):
|
|
"""
|
|
Delete the given file or directory
|
|
"""
|
|
try:
|
|
os.remove(file_path)
|
|
except OSError:
|
|
pass
|
|
|
|
|
|
def check_plugin_dependencies(plugin_id, plugin_config, plugin_settings, plugin_path):
|
|
"""
|
|
Check the plugin dependencies.
|
|
"""
|
|
# Check the desktop environment
|
|
if plugin_config['dependencies']['desktop_environments']:
|
|
# Plugin has restrictions on desktop environments
|
|
if DESKTOP_ENVIRONMENT not in plugin_config['dependencies']['desktop_environments']:
|
|
return _('Plugin does not support %s desktop environment') % DESKTOP_ENVIRONMENT
|
|
|
|
# Check the Python modules
|
|
for module in plugin_config['dependencies']['python_modules']:
|
|
if not module_exist(module):
|
|
return _("Please install the Python module '%s'") % module
|
|
|
|
# Check the shell commands
|
|
for command in plugin_config['dependencies']['shell_commands']:
|
|
if not command_exist(command):
|
|
return _("Please install the command-line tool '%s'") % command
|
|
|
|
# Check the resources
|
|
for resource in plugin_config['dependencies']['resources']:
|
|
if get_resource_path(resource) is None:
|
|
return _('Please add the resource %(resource)s to %(config_resource)s directory') % {'resource': resource, 'config_resource': CONFIG_RESOURCE}
|
|
|
|
plugin_dependency_checker = os.path.join(plugin_path, 'dependency_checker.py')
|
|
if os.path.isfile(plugin_dependency_checker):
|
|
dependency_checker = importlib.import_module((plugin_id + '.dependency_checker'))
|
|
if dependency_checker and hasattr(dependency_checker, "validate"):
|
|
return dependency_checker.validate(plugin_config, plugin_settings)
|
|
|
|
return None
|
|
|
|
|
|
def load_plugins_config(safeeyes_config):
|
|
"""
|
|
Load all the plugins from the given directory.
|
|
"""
|
|
configs = []
|
|
for plugin in safeeyes_config.get('plugins'):
|
|
plugin_path = os.path.join(SYSTEM_PLUGINS_DIR, plugin['id'])
|
|
if not os.path.isdir(plugin_path):
|
|
# User plugin
|
|
plugin_path = os.path.join(USER_PLUGINS_DIR, plugin['id'])
|
|
plugin_config_path = os.path.join(plugin_path, 'config.json')
|
|
plugin_icon_path = os.path.join(plugin_path, 'icon.png')
|
|
plugin_module_path = os.path.join(plugin_path, 'plugin.py')
|
|
if not os.path.isfile(plugin_module_path):
|
|
return
|
|
icon = None
|
|
if os.path.isfile(plugin_icon_path):
|
|
icon = plugin_icon_path
|
|
else:
|
|
icon = get_resource_path('ic_plugin.png')
|
|
config = load_json(plugin_config_path)
|
|
if config is None:
|
|
continue
|
|
dependency_description = check_plugin_dependencies(plugin['id'], config, plugin.get('settings', {}), plugin_path)
|
|
if dependency_description:
|
|
plugin['enabled'] = False
|
|
config['error'] = True
|
|
config['meta']['description'] = dependency_description
|
|
icon = get_resource_path('ic_warning.png')
|
|
else:
|
|
config['error'] = False
|
|
config['id'] = plugin['id']
|
|
config['icon'] = icon
|
|
config['enabled'] = plugin['enabled']
|
|
for setting in config['settings']:
|
|
setting['safeeyes_config'] = plugin['settings']
|
|
configs.append(config)
|
|
return configs
|
|
|
|
|
|
def desktop_environment():
|
|
"""
|
|
Detect the desktop environment.
|
|
"""
|
|
global DESKTOP_ENVIRONMENT
|
|
desktop_session = os.environ.get('DESKTOP_SESSION')
|
|
current_desktop = os.environ.get('XDG_CURRENT_DESKTOP')
|
|
env = 'unknown'
|
|
if desktop_session is not None:
|
|
desktop_session = desktop_session.lower()
|
|
if desktop_session in ['gnome', 'unity', 'budgie-desktop', 'cinnamon', 'mate', 'xfce4', 'lxde', 'pantheon', 'fluxbox', 'blackbox', 'openbox', 'icewm', 'jwm', 'afterstep', 'trinity', 'kde']:
|
|
env = desktop_session
|
|
elif desktop_session.startswith('xubuntu') or (current_desktop is not None and 'xfce' in current_desktop):
|
|
env = 'xfce'
|
|
elif desktop_session.startswith('lubuntu'):
|
|
env = 'lxde'
|
|
elif 'plasma' in desktop_session or desktop_session.startswith('kubuntu') or os.environ.get('KDE_FULL_SESSION') == 'true':
|
|
env = 'kde'
|
|
elif os.environ.get('GNOME_DESKTOP_SESSION_ID'):
|
|
env = 'gnome'
|
|
elif desktop_session.startswith('ubuntu'):
|
|
env = 'unity'
|
|
DESKTOP_ENVIRONMENT = env
|
|
return env
|
|
|
|
def is_wayland():
|
|
"""
|
|
Determine if Wayland is running
|
|
https://unix.stackexchange.com/a/325972/222290
|
|
"""
|
|
global IS_WAYLAND
|
|
try:
|
|
session_id = subprocess.check_output(['loginctl']).split(b'\n')[1].split()[0]
|
|
output = subprocess.check_output(
|
|
['loginctl', 'show-session', session_id, '-p', 'Type']
|
|
)
|
|
except BaseException:
|
|
logging.warning('Unable to determine if wayland is running. Assuming no.')
|
|
IS_WAYLAND = False
|
|
else:
|
|
IS_WAYLAND = bool(re.search(b'wayland', output, re.IGNORECASE))
|
|
return IS_WAYLAND
|
|
|
|
|
|
def execute_command(command, args=[]):
|
|
"""
|
|
Execute the shell command without waiting for its response.
|
|
"""
|
|
if command:
|
|
command_to_execute = []
|
|
if isinstance(command, str):
|
|
command_to_execute.append(command)
|
|
else:
|
|
command_to_execute.extend(command)
|
|
if args:
|
|
command_to_execute.extend(args)
|
|
try:
|
|
subprocess.Popen(command_to_execute)
|
|
except BaseException:
|
|
logging.error('Error in executing the command ' + str(command))
|
|
|
|
|
|
def command_exist(command):
|
|
"""
|
|
Check whether the given command exist in the system or not.
|
|
"""
|
|
if shutil.which(command):
|
|
return True
|
|
return False
|
|
|
|
|
|
def module_exist(module):
|
|
"""
|
|
Check wther the given Python module exists or not.
|
|
"""
|
|
try:
|
|
imp.find_module(module)
|
|
return True
|
|
except ImportError:
|
|
return False
|
|
|
|
|
|
def merge_configs(new_config, old_config):
|
|
"""
|
|
Merge the values of old_config into the new_config.
|
|
"""
|
|
new_config = new_config.copy()
|
|
new_config.update(old_config)
|
|
return new_config
|
|
|
|
|
|
def initialize_safeeyes():
|
|
"""
|
|
Create the config file and style sheet in ~/.config/safeeyes directory.
|
|
"""
|
|
logging.info('Copy the config files to ~/.config/safeeyes')
|
|
|
|
style_dir_path = os.path.join(HOME_DIRECTORY, '.config/safeeyes/style')
|
|
|
|
# Remove the ~/.config/safeeyes/safeeyes.json file
|
|
delete(CONFIG_FILE_PATH)
|
|
|
|
# Create the ~/.config/safeeyes/style directory
|
|
mkdir(style_dir_path)
|
|
|
|
# Copy the safeeyes.json
|
|
shutil.copy2(SYSTEM_CONFIG_FILE_PATH, CONFIG_FILE_PATH)
|
|
os.chmod(CONFIG_FILE_PATH, 0o777)
|
|
|
|
# Copy the new style sheet
|
|
if not os.path.isfile(STYLE_SHEET_PATH):
|
|
shutil.copy2(SYSTEM_STYLE_SHEET_PATH, STYLE_SHEET_PATH)
|
|
os.chmod(STYLE_SHEET_PATH, 0o777)
|
|
|
|
|
|
def initialize_platform():
|
|
"""
|
|
Copy icons and generate desktop entries.
|
|
"""
|
|
logging.debug("Initialize the platform")
|
|
|
|
applications_dir_path = os.path.join(HOME_DIRECTORY, '.local/share/applications')
|
|
icons_dir_path = os.path.join(HOME_DIRECTORY, '.local/share/icons')
|
|
startup_dir_path = os.path.join(HOME_DIRECTORY, '.config/autostart')
|
|
desktop_entry = os.path.join(applications_dir_path, 'safeeyes.desktop')
|
|
startup_entry = os.path.join(startup_dir_path, 'safeeyes.desktop')
|
|
|
|
# Create the folders if not exist
|
|
mkdir(icons_dir_path)
|
|
mkdir(startup_dir_path)
|
|
|
|
# Remove existing files
|
|
delete(startup_entry)
|
|
|
|
# Create a destop entry
|
|
if not os.path.exists(os.path.join(sys.prefix, "share/applications/safeeyes.desktop")):
|
|
# Create the folder if not exist
|
|
mkdir(applications_dir_path)
|
|
|
|
# Remove existing file
|
|
delete(desktop_entry)
|
|
|
|
# Create a link
|
|
try:
|
|
os.symlink(SYSTEM_DESKTOP_FILE, desktop_entry)
|
|
except OSError:
|
|
logging.error("Failed to create desktop entry at %s" % desktop_entry)
|
|
|
|
# Create the new startup entry
|
|
try:
|
|
os.symlink(SYSTEM_DESKTOP_FILE, startup_entry)
|
|
except OSError:
|
|
logging.error("Failed to create startup entry at %s" % startup_entry)
|
|
|
|
# Add links for all icons
|
|
for (path, _, filenames) in os.walk(SYSTEM_ICONS):
|
|
for filename in filenames:
|
|
system_icon = os.path.join(path, filename)
|
|
local_icon = os.path.join(icons_dir_path, os.path.relpath(system_icon, SYSTEM_ICONS))
|
|
global_icon = os.path.join(sys.prefix, "share/icons", os.path.relpath(system_icon, SYSTEM_ICONS))
|
|
parent_dir = str(Path(local_icon).parent)
|
|
|
|
if os.path.exists(global_icon):
|
|
# This icon is already added to the /usr/share/icons/hicolor folder
|
|
continue
|
|
|
|
# Create the directory if not exists
|
|
mkdir(parent_dir)
|
|
|
|
# Remove the link if already exists
|
|
delete(local_icon)
|
|
|
|
# Add a link for the icon
|
|
try:
|
|
os.symlink(system_icon, local_icon)
|
|
except OSError:
|
|
logging.error("Failed to create icon link at %s" % local_icon)
|
|
|
|
|
|
def reset_config():
|
|
# Remove the ~/.config/safeeyes/safeeyes.json and safeeyes_style.css
|
|
delete(CONFIG_FILE_PATH)
|
|
delete(STYLE_SHEET_PATH)
|
|
|
|
# Copy the safeeyes.json and safeeyes_style.css
|
|
shutil.copy2(SYSTEM_CONFIG_FILE_PATH, CONFIG_FILE_PATH)
|
|
shutil.copy2(SYSTEM_STYLE_SHEET_PATH, STYLE_SHEET_PATH)
|
|
|
|
# Add write permission (e.g. if original file was stored in /nix/store)
|
|
os.chmod(CONFIG_FILE_PATH, 0o777)
|
|
os.chmod(STYLE_SHEET_PATH, 0o777)
|
|
|
|
initialize_platform()
|
|
|
|
def replace_style_sheet():
|
|
"""
|
|
Replace the user style sheet by system style sheet.
|
|
"""
|
|
delete(STYLE_SHEET_PATH)
|
|
shutil.copy2(SYSTEM_STYLE_SHEET_PATH, STYLE_SHEET_PATH)
|
|
os.chmod(STYLE_SHEET_PATH, 0o777)
|
|
|
|
|
|
def intialize_logging(debug):
|
|
"""
|
|
Initialize the logging framework using the Safe Eyes specific configurations.
|
|
"""
|
|
# Configure logging.
|
|
root_logger = logging.getLogger()
|
|
log_formatter = logging.Formatter(
|
|
'%(asctime)s [%(levelname)s]:[%(threadName)s] %(message)s')
|
|
|
|
# Append the logs and overwrite once reached 1MB
|
|
if debug:
|
|
# Log to file
|
|
file_handler = RotatingFileHandler(
|
|
LOG_FILE_PATH, maxBytes=1024 * 1024, backupCount=5, encoding=None, delay=0)
|
|
file_handler.setFormatter(log_formatter)
|
|
# Log to console
|
|
console_handler = logging.StreamHandler()
|
|
console_handler.setFormatter(log_formatter)
|
|
|
|
root_logger.setLevel(logging.DEBUG)
|
|
root_logger.addHandler(console_handler)
|
|
root_logger.addHandler(file_handler)
|
|
else:
|
|
root_logger.propagate = False
|
|
|
|
|
|
def __open_plugin_config(plugins_dir, plugin_id):
|
|
"""
|
|
Open the given plugin's configuration.
|
|
"""
|
|
plugin_config_path = os.path.join(plugins_dir, plugin_id, 'config.json')
|
|
plugin_module_path = os.path.join(plugins_dir, plugin_id, 'plugin.py')
|
|
if not os.path.isfile(plugin_config_path) or not os.path.isfile(plugin_module_path):
|
|
# Either the config.json or plugin.py is not available
|
|
return None
|
|
return load_json(plugin_config_path)
|
|
|
|
|
|
def __update_plugin_config(plugin, plugin_config, config):
|
|
"""
|
|
Update the plugin configuration.
|
|
"""
|
|
if plugin_config is None:
|
|
config['plugins'].remove(plugin)
|
|
else:
|
|
if LooseVersion(plugin.get('version', '0.0.0')) != LooseVersion(plugin_config['meta']['version']):
|
|
# Update the configuration
|
|
plugin['version'] = plugin_config['meta']['version']
|
|
setting_ids = []
|
|
# Add the new settings
|
|
for setting in plugin_config['settings']:
|
|
setting_ids.append(setting['id'])
|
|
if 'settings' not in plugin:
|
|
plugin['settings'] = {}
|
|
if plugin['settings'].get(setting['id'], None) is None:
|
|
plugin['settings'][setting['id']] = setting['default']
|
|
# Remove the removed ids
|
|
keys_to_remove = []
|
|
for key in plugin.get('settings', []):
|
|
if key not in setting_ids:
|
|
keys_to_remove.append(key)
|
|
for key in keys_to_remove:
|
|
del plugin['settings'][key]
|
|
|
|
|
|
def __add_plugin_config(plugin_id, plugin_config, safe_eyes_config):
|
|
"""
|
|
"""
|
|
if plugin_config is None:
|
|
return
|
|
config = {}
|
|
config['id'] = plugin_id
|
|
config['enabled'] = False # By default plugins are disabled
|
|
config['version'] = plugin_config['meta']['version']
|
|
if plugin_config['settings']:
|
|
config['settings'] = {}
|
|
for setting in plugin_config['settings']:
|
|
config['settings'][setting['id']] = setting['default']
|
|
safe_eyes_config['plugins'].append(config)
|
|
|
|
|
|
def merge_plugins(config):
|
|
"""
|
|
Merge plugin configurations with Safe Eyes configuration.
|
|
"""
|
|
system_plugins = None
|
|
user_plugins = None
|
|
|
|
# Load system plugins id
|
|
if os.path.isdir(SYSTEM_PLUGINS_DIR):
|
|
system_plugins = os.listdir(SYSTEM_PLUGINS_DIR)
|
|
else:
|
|
system_plugins = []
|
|
|
|
# Load user plugins id
|
|
if os.path.isdir(USER_PLUGINS_DIR):
|
|
user_plugins = os.listdir(USER_PLUGINS_DIR)
|
|
else:
|
|
user_plugins = []
|
|
|
|
# Create a list of existing plugins
|
|
for plugin in config['plugins']:
|
|
plugin_id = plugin['id']
|
|
if plugin_id in system_plugins:
|
|
plugin_config = __open_plugin_config(SYSTEM_PLUGINS_DIR, plugin_id)
|
|
__update_plugin_config(plugin, plugin_config, config)
|
|
system_plugins.remove(plugin_id)
|
|
elif plugin_id in user_plugins:
|
|
plugin_config = __open_plugin_config(USER_PLUGINS_DIR, plugin_id)
|
|
__update_plugin_config(plugin, plugin_config, config)
|
|
user_plugins.remove(plugin_id)
|
|
else:
|
|
config['plugins'].remove(plugin)
|
|
|
|
# Add all system plugins
|
|
for plugin_id in system_plugins:
|
|
plugin_config = __open_plugin_config(SYSTEM_PLUGINS_DIR, plugin_id)
|
|
__add_plugin_config(plugin_id, plugin_config, config)
|
|
|
|
# Add all user plugins
|
|
for plugin_id in user_plugins:
|
|
plugin_config = __open_plugin_config(USER_PLUGINS_DIR, plugin_id)
|
|
__add_plugin_config(plugin_id, plugin_config, config)
|
|
|
|
|
|
def open_session():
|
|
"""
|
|
Open the last session.
|
|
"""
|
|
logging.info('Reading the session file')
|
|
|
|
session = load_json(SESSION_FILE_PATH)
|
|
if session is None:
|
|
session = {'plugin': {}}
|
|
return session
|
|
|
|
|
|
def create_gtk_builder(glade_file):
|
|
"""
|
|
Create a Gtk builder and load the glade file.
|
|
"""
|
|
builder = Gtk.Builder()
|
|
builder.set_translation_domain('safeeyes')
|
|
builder.add_from_file(glade_file)
|
|
# Tranlslate all sub components
|
|
for obj in builder.get_objects():
|
|
if (not isinstance(obj, Gtk.SeparatorMenuItem)) and hasattr(obj, "get_label"):
|
|
label = obj.get_label()
|
|
if label is not None:
|
|
obj.set_label(_(label))
|
|
elif hasattr(obj, "get_title"):
|
|
title = obj.get_title()
|
|
if title is not None:
|
|
obj.set_title(_(title))
|
|
return builder
|
|
|
|
|
|
def load_and_scale_image(path, width, height):
|
|
if not os.path.isfile(path):
|
|
return None
|
|
pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_scale(
|
|
filename=path,
|
|
width=width,
|
|
height=height,
|
|
preserve_aspect_ratio=True)
|
|
image = Gtk.Image.new_from_pixbuf(pixbuf)
|
|
return image
|
|
|
|
|
|
def has_method(module, method_name, no_of_args=0):
|
|
"""
|
|
Check whether the given function is defined in the module or not.
|
|
"""
|
|
if hasattr(module, method_name):
|
|
if len(inspect.getargspec(getattr(module, method_name)).args) == no_of_args:
|
|
return True
|
|
return False
|
|
|
|
|
|
def remove_if_exists(list_of_items, item):
|
|
"""
|
|
Remove the item from the list_of_items it it exists.
|
|
"""
|
|
if item in list_of_items:
|
|
list_of_items.remove(item)
|