#!/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/>.
import collections
import configparser
import os
import shlex
import sys
from glob import iglob
from functools import partialmethod
from itertools import chain
from locale import gettext as _
from gi.repository import (
Gdk,
Gtk)
from gi.repository import Pango
from gi.repository.GObject import markup_escape_text as escape_markup
from lightdm_gtk_greeter_settings import (
helpers,
IconEntry,
IndicatorsEntry,
OptionEntry,
PositionEntry)
from lightdm_gtk_greeter_settings.helpers import (
C_,
string2bool,
SimpleEnum,
WidgetsEnum)
from lightdm_gtk_greeter_settings.MonitorsGroup import MonitorsGroup
from lightdm_gtk_greeter_settings.OptionGroup import SimpleGroup
__all__ = ['GtkGreeterSettingsWindow',
'WindowMode']
class WindowMode(SimpleEnum):
Default = 'default'
Embedded = 'embedded'
GtkHeader = 'gtk-header'
InitialValue = collections.namedtuple('InitialValue', ('value', 'enabled'))
class GtkGreeterSettingsWindow(Gtk.Window):
__gtype_name__ = 'GtkGreeterSettingsWindow'
class Widgets(WidgetsEnum):
apply = 'apply_button'
reload = 'reset_button'
close = 'close_button'
buttons = 'dialog_buttons'
content = 'content_box'
infobar = 'infobar'
infobar_label = 'infobar_label'
multihead_label = 'multihead_label'
def __new__(cls, mode=WindowMode.Default):
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.mode = mode
builder.connect_signals(window)
window.init_window()
return window
builder = None
mode = WindowMode.Default
entries_setup = {
('greeter', 'allow-debugging'): ('changed',),
('greeter', 'background'): ('changed',),
('greeter', 'default-user-image'): ('changed',),
('greeter', 'screensaver-timeout'): ('setup', 'get', 'set'),
('greeter', 'theme-name'): ('setup', 'changed'),
('greeter', 'icon-theme-name'): ('setup', 'changed'),
('greeter', 'keyboard'): ('changed',),
('greeter', 'reader'): ('changed',)}
def init_window(self):
self._widgets = self.Widgets(builder=self.builder)
self._multihead_dialog = None
self._entry_menu = None
self._initial_values = {}
self._changed_entries = None
self._entries = None
self._groups = (
SimpleGroup('greeter', self.builder, {
# Appearance
'theme-name': (OptionEntry.StringEntry, ''),
'icon-theme-name': (OptionEntry.StringEntry, ''),
'font-name': (OptionEntry.FontEntry, 'Sans 10'),
'xft-antialias': (OptionEntry.BooleanEntry, 'false'),
'xft-dpi': (OptionEntry.StringEntry, None),
'xft-rgba': (OptionEntry.ChoiceEntry, None),
'xft-hintstyle': (OptionEntry.ChoiceEntry, None),
'background': (OptionEntry.BackgroundEntry, '#000000'),
'user-background': (OptionEntry.BooleanEntry, 'true'),
'hide-user-image': (OptionEntry.InvertedBooleanEntry, 'false'),
'default-user-image': (IconEntry.IconEntry, '#avatar-default'),
# Panel
'clock-format': (OptionEntry.ClockFormatEntry, '%a, %H:%M'),
'indicators': (IndicatorsEntry.IndicatorsEntry,
'~host;~spacer;~clock;~spacer;~language;~session;~a11y;~power'),
# Position
'position': (PositionEntry.PositionEntry, '50%,center'),
# Misc
'screensaver-timeout': (OptionEntry.AdjustmentEntry, '60'),
'keyboard': (OptionEntry.StringPathEntry, ''),
'reader': (OptionEntry.StringPathEntry, ''),
'a11y-states': (OptionEntry.AccessibilityStatesEntry, ''),
'allow-debugging': (OptionEntry.BooleanEntry, 'false'), }),
MonitorsGroup(self.builder))
for group in self._groups:
group.entry_added.connect(self.on_entry_added)
group.entry_removed.connect(self.on_entry_removed)
self._config_path = helpers.get_config_path()
self._allow_edit = self._has_access_to_write(self._config_path)
self._widgets.apply.props.visible = self._allow_edit
if not self._allow_edit:
self._set_message(_('You don\'t have permissions to change greeter configuration'),
Gtk.MessageType.WARNING)
if self.mode != WindowMode.Embedded:
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)
if self.mode == WindowMode.Embedded:
self.on_entry_changed = self.on_entry_changed_embedded
self._widgets.buttons.hide()
self._widgets.content.reorder_child(self._widgets.infobar, 0)
# Socket/Plug focus issues workaround
self._widgets.multihead_label.connect('button-press-event', self.on_multihead_click)
elif self.mode == WindowMode.GtkHeader:
for button in (self._widgets.apply, self._widgets.reload):
self._widgets.buttons.remove(button)
button.set_label('')
button.set_always_show_image(True)
self._widgets.buttons.hide()
header = Gtk.HeaderBar()
header.set_show_close_button(True)
header.props.title = self.get_title()
header.pack_start(self._widgets.reload)
header.pack_start(self._widgets.apply)
header.show_all()
self.set_titlebar(header)
self._config = configparser.RawConfigParser(strict=False)
self._read()
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 _set_message(self, message, type_=Gtk.MessageType.INFO):
if not message:
self._widgets.infobar.hide()
self._widgets.infobar.props.message_type = type_
self._widgets.infobar_label.props.label = message
self._widgets.infobar.show()
def _read(self):
self._config.clear()
try:
if not self._config.read(self._config_path) and \
self.mode != WindowMode.Embedded:
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
self._changed_entries = None
for group in self._groups:
group.read(self._config)
self._initial_values = {entry: InitialValue(entry.value, entry.enabled)
for entry in self._initial_values.keys()}
self._changed_entries = set()
self._widgets.apply.props.sensitive = False
def _write(self):
for group in self._groups:
group.write(self._config)
if self.mode != WindowMode.Embedded:
for entry in self._changed_entries:
self._initial_values[entry] = InitialValue(entry.value, entry.enabled)
self._changed_entries.clear()
self._widgets.apply.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_entry_added(self, group, entry, key):
if isinstance(group, SimpleGroup) and (group.name, key) in self.entries_setup:
for action in self.entries_setup[(group.name, key)]:
fname = 'on_entry_%s_%s_%s' % (action, group.name, key)
f = getattr(self, fname.replace('-', '_'))
if action == 'setup':
f(entry)
else:
entry.connect(action, f)
label_holder = entry.widgets['label_holder']
if label_holder and isinstance(group, SimpleGroup):
label_holder.connect('button-press-event', self.on_entry_label_clicked,
entry, group, key)
entry.changed.connect(self.on_entry_changed)
self._initial_values[entry] = InitialValue(entry.value, entry.enabled)
self.on_entry_changed(entry, force=True)
def on_entry_removed(self, group, entry, key):
self._initial_values.pop(entry)
if self._changed_entries is None:
return
self._changed_entries.discard(entry)
self._widgets.apply.props.sensitive = self._allow_edit and self._changed_entries
def on_entry_changed(self, entry, force=False):
if self._changed_entries is None:
return
initial = self._initial_values[entry]
if force or entry.enabled != initial.enabled or \
(entry.enabled and entry.value != initial.value):
self._changed_entries.add(entry)
else:
self._changed_entries.discard(entry)
self._widgets.apply.props.sensitive = self._allow_edit and self._changed_entries
def on_entry_changed_embedded(self, entry, force=False):
if self._changed_entries is None:
return
initial = self._initial_values[entry]
if force or entry.enabled != initial.enabled or \
(entry.enabled and entry.value != initial.value):
self._changed_entries.add(entry)
else:
self._changed_entries.discard(entry)
if self._allow_edit:
self._write()
def on_entry_reset_clicked(self, item):
entry, value, enabled = item._reset_entry_data
if enabled is None:
entry.value = value
else:
entry.enabled = enabled
def on_entry_label_clicked(self, widget, event, entry, group, key):
if event.button != 3:
return
if not self._entry_menu:
def new_item(activate=None):
item = Gtk.MenuItem('')
label = item.get_child()
label.props.use_markup = True
label.props.ellipsize = Pango.EllipsizeMode.END
label.props.max_width_chars = 90
if activate:
item.connect('activate', activate)
else:
item.props.sensitive = False
return item
self._entry_menu = Gtk.Menu()
self._entry_menu_label_item = new_item()
self._entry_menu_separator_item = Gtk.SeparatorMenuItem()
self._entry_menu_initial_item = new_item(self.on_entry_reset_clicked)
self._entry_menu_default_item = new_item(self.on_entry_reset_clicked)
self._entry_menu.append(self._entry_menu_label_item)
self._entry_menu.append(self._entry_menu_separator_item)
self._entry_menu.append(self._entry_menu_initial_item)
self._entry_menu.append(self._entry_menu_default_item)
self._entry_menu.show_all()
def format_value(value=None, enabled=True):
if not enabled:
return _('<i>disabled</i>')
if value == '':
return _('<i>empty string</i>')
elif value is None:
return _('<i>None</i>')
else:
return escape_markup(str(value))
self._entry_menu_label_item.props.label = '{key} = {value}'.format(
group=group.name,
key=key,
value=format_value(value=entry.value, enabled=entry.enabled))
if entry in self._changed_entries:
initial = self._initial_values[entry]
if entry.enabled != initial.enabled and not initial.enabled:
self._entry_menu_initial_item._reset_entry_data = entry, None, initial.enabled
else:
self._entry_menu_initial_item._reset_entry_data = entry, initial.value, None
value = format_value(value=initial.value, enabled=initial.enabled)
self._entry_menu_initial_item.set_tooltip_markup(value)
self._entry_menu_initial_item.props.visible = True
self._entry_menu_initial_item.props.label = \
_('Reset to initial value: <b>{value}</b>').format(value=value)
else:
self._entry_menu_initial_item.props.visible = False
default = group.defaults[key]
if default is not None and entry.value != default:
value = format_value(value=default)
self._entry_menu_default_item._reset_entry_data = entry, default, None
self._entry_menu_default_item.set_tooltip_markup(value)
self._entry_menu_default_item.props.visible = True
self._entry_menu_default_item.props.label = \
_('Reset to default value: <b>{value}</b>').format(value=value)
else:
self._entry_menu_default_item.props.visible = False
self._entry_menu_separator_item.props.visible = \
(self._entry_menu_initial_item.props.visible or
self._entry_menu_default_item.props.visible)
self._entry_menu.popup(None, None, None, None, 0, Gtk.get_current_event_time())
# [greeter] screensaver-timeout
def on_entry_setup_greeter_screensaver_timeout(self, entry):
view = entry.widgets['view']
adjustment = entry.widgets['adjustment']
end_label = entry.widgets['end-label']
for mark in chain((range(10, 61, 10)),
(range(69, int(adjustment.props.upper), 10))):
view.add_mark(mark, Gtk.PositionType.BOTTOM, None)
total = int(adjustment.props.upper - 60) + 1
end_label.props.label = C_('option|greeter|screensaver-timeout',
'{count} min').format(count=total)
view.connect('format-value',
self.on_entry_format_scale_greeter_screensaver_timeout,
adjustment)
def on_entry_get_greeter_screensaver_timeout(self, entry=None, value=None):
try:
value = int(float(value))
except ValueError:
value = 60
if value > 60:
return (value - 59) * 60
return value
def on_entry_set_greeter_screensaver_timeout(self, entry=None, value=None):
try:
value = int(float(value))
except ValueError:
value = 60
if value > 60:
return value // 60 + 59
return value
def on_entry_format_scale_greeter_screensaver_timeout(self, scale, value, adjustment):
if value != adjustment.props.lower and value != adjustment.props.upper:
value = self.on_entry_get_greeter_screensaver_timeout(value=value)
return '%02d:%02d' % (value // 60, value % 60)
return ''
# [greeter] theme-name
GtkThemesPattern = (sys.prefix, 'share', 'themes', '*', 'gtk-3.0', 'gtk.css')
def on_entry_setup_greeter_theme_name(self, entry, pattern=GtkThemesPattern):
values = entry.widgets['values']
idx = pattern.index('*') - len(pattern)
for path in sorted(iglob(os.path.join(*pattern))):
values.append_text(path.split(os.path.sep)[idx])
def on_entry_changed_greeter_theme_name(self, entry, pattern=GtkThemesPattern):
value = entry.value
if value:
path = (p if p != '*' else value.strip() for p in pattern)
entry.error = helpers.check_path_accessibility(os.path.join(*path))
else:
entry.error = None
# [greeter] icon-theme-name
IconThemesPattern = (sys.prefix, 'share', 'icons', '*', 'index.theme')
on_entry_setup_greeter_icon_theme_name = partialmethod(on_entry_setup_greeter_theme_name,
pattern=IconThemesPattern)
on_entry_changed_greeter_icon_theme_name = partialmethod(on_entry_changed_greeter_theme_name,
pattern=IconThemesPattern)
# [greeter] allow-debugging
def on_entry_changed_greeter_allow_debugging(self, entry):
gtk_version = Gtk.MAJOR_VERSION, Gtk.MINOR_VERSION, Gtk.MICRO_VERSION
minimal_version = 3, 14, 0
if gtk_version < minimal_version and string2bool(entry.value):
entry.error = C_('option|greeter|allow-debugging',
'GtkInspector is not available on your system\n'
'Gtk version: {current} < {minimal}').format(
current=gtk_version, minimal=minimal_version)
else:
entry.error = None
# [greeter] default-user-image
def on_entry_changed_greeter_default_user_image(self, entry):
value = entry.value
if value.startswith('#'):
entry.error = None
else:
entry.error = helpers.check_path_accessibility(value)
# [greeter] background
def on_entry_changed_greeter_background(self, entry):
value = entry.value
if not value or Gdk.RGBA().parse(value):
entry.error = None
else:
entry.error = helpers.check_path_accessibility(value)
# [greeter] keyboard
def on_entry_changed_greeter_keyboard(self, entry):
error = None
if entry.enabled:
value = entry.value
if os.path.isabs(value):
argv = shlex.split(value)
error = helpers.check_path_accessibility(argv[0], executable=True)
entry.error = error
# [greeter] reader
on_entry_changed_greeter_reader = on_entry_changed_greeter_keyboard
def on_multihead_click(self, label, event):
if event.button == 1:
label.emit('activate-link', '')
return True
return False
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()