#!/usr/bin/env python3
# -*- Mode: Python; coding: utf-8; indent-tabs-mode: nil; tab-width: 4 -*-
# LightDM GTK Greeter Settings
# Copyright (C) 2014 Andrew P. <pan.pav.7c5@gmail.com>
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 3, as published
# by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranties of
# MERCHANTABILITY, SATISFACTORY QUALITY, 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/>.
from collections import namedtuple
import configparser
from glob import iglob
from itertools import chain
from locale import gettext as _
import os
import sys
from gi.repository import Gtk
from lightdm_gtk_greeter_settings import OptionEntry
from lightdm_gtk_greeter_settings import helpers
from lightdm_gtk_greeter_settings.helpers import C_
__all__ = ['GtkGreeterSettingsWindow']
BindingValue = namedtuple(
'BindingValue', ('option', 'default', 'changed_handler'))
InitialValue = namedtuple('InitialValue', ('value', 'state'))
GREETER_SECTION = 'greeter'
OPTIONS_BINDINGS = \
{
'greeter':
{
# key: class, base widgets name, default value
# Theme
'theme-name': (OptionEntry.StringEntry, 'gtk_theme', None),
'icon-theme-name': (OptionEntry.StringEntry, 'icons_theme', None),
'font-name': (OptionEntry.FontEntry, 'font', 'Sans 10'),
'xft-antialias': (OptionEntry.BooleanEntry, 'antialias', False),
'xft-dpi': (OptionEntry.StringEntry, 'dpi', None),
'xft-rgba': (OptionEntry.ChoiceEntry, 'rgba', None),
'xft-hintstyle': (OptionEntry.ChoiceEntry, 'hintstyle', None),
'background': (OptionEntry.BackgroundEntry, 'background',
'#000000'),
'default-user-image': (OptionEntry.IconEntry, 'userimage',
'#avatar-default'),
# Panel
'show-clock': (OptionEntry.BooleanEntry, 'show_clock', False),
'clock-format': (OptionEntry.ClockFormatEntry, 'clock_format',
'%a, %H:%M'),
'indicators': (OptionEntry.IndicatorsEntry, 'indicators', None),
# Position
'position': (OptionEntry.PositionEntry, 'position', '50%,center'),
# Misc
'screensaver-timeout': (OptionEntry.AdjustmentEntry, 'timeout',
60),
'keyboard': (OptionEntry.StringEntry, 'keyboard', None),
}
}
class BuilderWrapper:
def __init__(self, builder, base):
self._builder = builder
self._base = base
def __getitem__(self, key):
return self._builder.get_object('%s_%s' % (self._base, key))
class GtkGreeterSettingsWindow(Gtk.Window):
__gtype_name__ = 'GtkGreeterSettingsWindow'
BUILDER_WIDGETS = ('apply_button', 'no_access_infobar',
'gtk_theme_values', 'icons_theme_values',
'timeout_view', 'timeout_adjustment',
'timeout_end_label')
def __new__(cls):
builder = Gtk.Builder()
builder.add_from_file(helpers.get_data_path('%s.ui' % cls.__name__))
window = builder.get_object('settings_window')
window._builder = builder
window.__dict__.update(('_' + w, builder.get_object(w))
for w in cls.BUILDER_WIDGETS)
builder.connect_signals(window)
window._init_window()
return window
def _init_window(self):
self._bindings = {section: {key: self._new_binding(*args)
for key, args in list(keys.items())}
for section, keys in list(OPTIONS_BINDINGS.items())}
self._initial_values = {}
self._changed_values = None
self._config_path = helpers.get_config_path()
self._allow_edit = self._has_access_to_write(self._config_path)
self._no_access_infobar.props.visible = not self._allow_edit
self._apply_button.props.visible = self._allow_edit
if not self._allow_edit:
helpers.show_message(
text=_('No permissions to save configuration'),
secondary_text=_(
'It seems that you don\'t have permissions to write to '
'file:\n{path}\n\nTry to run this program using "sudo" '
'or "pkexec"').format(path=self._config_path),
message_type=Gtk.MessageType.WARNING)
self._configure_special_entries()
self._config = configparser.RawConfigParser(strict=False)
self._read()
def _configure_special_entries(self):
# theme-name
for theme in sorted(iglob(os.path.join(sys.prefix, 'share', 'themes',
'*', 'gtk-3.0'))):
self._gtk_theme_values.append_text(theme.split(os.path.sep)[-2])
# icon-theme-name
for theme in sorted(iglob(os.path.join(sys.prefix, 'share', 'icons',
'*', 'index.theme'))):
self._icons_theme_values.append_text(theme.split(os.path.sep)[-2])
# screensaver-timeout
timeout = self._bindings['greeter']['screensaver-timeout'].option
timeout.get.connect(self.on_timeout_option_get)
timeout.set.connect(self.on_timeout_option_set)
for mark in chain(list(range(10, 61, 10)),
list(range(69,
int(self._timeout_adjustment.props.upper),
10))):
self._timeout_view.add_mark(mark, Gtk.PositionType.BOTTOM, None)
total = int(self._timeout_adjustment.props.upper - 60) + 1
self._timeout_end_label.props.label = C_('option|timeout',
'{count} min')\
.format(count=total)
def _has_access_to_write(self, path):
if os.path.exists(path) and os.access(self._config_path, os.W_OK):
return True
return os.access(os.path.dirname(self._config_path), os.W_OK | os.X_OK)
def _new_binding(self, cls, basename, default):
option = cls(BuilderWrapper(self._builder, basename))
changed_id = option.changed.connect(self.on_option_changed)
return BindingValue(option, default, changed_id)
def _read(self):
self._config.clear()
try:
if not self._config.read(self._config_path):
helpers.show_message(text=_('Failed to read configuration '
'file: {path}')
.format(path=self._config_path),
message_type=Gtk.MessageType.ERROR)
except (configparser.DuplicateSectionError,
configparser.MissingSectionHeaderError):
pass
if not self._config.has_option(GREETER_SECTION, 'indicators'):
try:
value = self._config.get(GREETER_SECTION, 'show-indicators')
except (configparser.NoOptionError, configparser.NoSectionError):
pass
else:
if value:
self._config.set(GREETER_SECTION, 'indicators', value)
self._config.remove_option(GREETER_SECTION, 'show-indicators')
for section, keys in list(self._bindings.items()):
for key, binding in list(keys.items()):
with binding.option.handler_block(binding.changed_handler):
try:
binding.option.value = self._config.get(section, key)
binding.option.enabled = True
except (configparser.NoOptionError,
configparser.NoSectionError):
binding.option.value = binding.default
binding.option.enabled = False
self._initial_values[binding.option] = InitialValue(
binding.option.value,
binding.option.enabled)
self._changed_values = set()
self._apply_button.props.sensitive = False
def _write(self):
for section, keys in list(self._bindings.items()):
if not self._config.has_section(section):
self._config.add_section(section)
for key, binding in list(keys.items()):
if binding.option.enabled:
self._config.set(section, key, binding.option.value)
else:
self._config.remove_option(section, key)
self._initial_values[binding.option] = InitialValue(
binding.option.value,
binding.option.enabled)
self._changed_values = set()
self._apply_button.props.sensitive = False
try:
with open(self._config_path, 'w') as file:
self._config.write(file)
except OSError as e:
helpers.show_message(e, Gtk.MessageType.ERROR)
def on_option_changed(self, option):
if option.enabled != self._initial_values[option].state or \
(option.enabled
and option.value != self._initial_values[option].value):
self._changed_values.add(option)
else:
self._changed_values.discard(option)
self._apply_button.props.sensitive = self._allow_edit and \
self._changed_values
def on_timeout_option_get(self, option=None, value=None):
value = int(float(value))
if value > 60:
return (value - 59) * 60
return value
def on_timeout_option_set(self, option=None, value=None):
value = int(float(value))
if value > 60:
return value // 60 + 59
return value
def on_format_timeout_scale(self, scale, value):
if value != self._timeout_adjustment.props.lower and \
value != self._timeout_adjustment.props.upper:
value = self.on_timeout_option_get(value=value)
return '%02d:%02d' % (value // 60, value % 60)
else:
return ''
def on_destroy(self, *unused):
Gtk.main_quit()
def on_apply_clicked(self, *unused):
self._write()
def on_reset_clicked(self, *unused):
self._read()
def on_close_clicked(self, *unused):
self.destroy()