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# Copyright (c) 2012, Matthias Schiffer <mschiffer@universe-factory.net>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import sys
import locale
from gi.repository import Gtk, Gdk, GObject, GLib
_ = locale.gettext
class LockWindow(Gtk.Window):
__gsignals__ = {
'logout': (GObject.SIGNAL_RUN_FIRST, None, ()),
'tryUnlock': (GObject.SIGNAL_RUN_FIRST, None, (str,))
}
def __init__(self):
Gtk.Window.__init__(self)
self.display = Gdk.Display.get_default()
self.screen = self.display.get_default_screen()
self.overlay = Gtk.Overlay()
self.add(self.overlay)
self.bg = Gtk.Image.new_from_file("bg.svg")
self.overlay.add(self.bg)
self.realize()
self.get_window().set_override_redirect(True)
self.set_default_size(self.screen.get_width(), self.screen.get_height())
self.set_has_resize_grip(False)
builder = Gtk.Builder()
if not builder.add_from_file("unlock.ui"):
sys.exit(1)
self.unlockWindow = builder.get_object('unlock_window')
self.lockLabel = builder.get_object('lock_label')
self.promptEntry = builder.get_object('prompt_entry')
self.messageLabel = builder.get_object('message_label')
self.logoutButton = builder.get_object('logout_button')
self.unlockButton = builder.get_object('unlock_button')
self.overlay.add_overlay(self.unlockWindow)
self.connect('delete-event', lambda w, e: True)
self.promptEntry.connect('activate', lambda w: self._tryUnlock())
self.logoutButton.connect('clicked', lambda w: self._logout())
self.unlockButton.connect('clicked', lambda w: self._tryUnlock())
self.reset(True)
self.deviceManager = self.display.get_device_manager()
self.connect('map-event', self._grabDevices)
self.connect('configure-event', lambda w, e: self.get_window().move_resize(0, 0, self.screen.get_width(), self.screen.get_height()) and False)
def _logout(self):
self.promptEntry.set_sensitive(False)
self.unlockButton.set_sensitive(False)
self.logoutButton.set_sensitive(False)
GLib.idle_add(lambda: self.emit('logout'))
def _tryUnlock(self):
self.promptEntry.set_sensitive(False)
self.unlockButton.set_sensitive(False)
self.logoutButton.set_sensitive(False)
GLib.idle_add(lambda: self.emit('tryUnlock', self.promptEntry.get_text()))
def _update(self):
self.promptEntry.set_sensitive(self._enablePromptEntry)
self.logoutButton.set_sensitive(self._enableLogoutButton)
self.unlockButton.set_sensitive(self._enableUnlockButton)
def reset(self, resetButtons = False):
if resetButtons:
self._enablePromptEntry = True
self._enableLogoutButton = False
self._enableUnlockButton = True
self.promptEntry.set_text('')
self.messageLabel.set_label('')
self._update()
self.promptEntry.grab_focus()
def updateLockMessage(self, username, logoutTime = None):
if logoutTime is None:
self.lockLabel.set_markup(_('This computer is currently locked by the user <i>{username}</i>.').format(username=GLib.markup_escape_text(username)))
self._enableLogoutButton = False
elif logoutTime > 0:
self.lockLabel.set_markup(
_('This computer is currently locked by the user <i>{username}</i>.\nThe user can be logged out in {minutes:02}:{seconds:02} minutes.').format(
username=GLib.markup_escape_text(username), minutes=logoutTime//60, seconds=logoutTime%60))
self._enableLogoutButton = False
else:
self.lockLabel.set_markup(
_('This computer is currently locked by the user <i>{username}</i>.\nThe user can be logged out now.').format(
username=GLib.markup_escape_text(username)))
self._enableLogoutButton = True
self._update()
def setAuthMessage(self, message):
self.messageLabel.set_label(message)
def _grabDevices(self, w, e):
self.promptEntry.grab_focus()
for device in self.deviceManager.list_devices(Gdk.DeviceType.MASTER):
device.grab(self.get_window(), Gdk.GrabOwnership.APPLICATION, True, Gdk.EventMask.ALL_EVENTS_MASK, None, Gdk.CURRENT_TIME)
self.present()
return False
def _ungrabDevices(self):
for device in self.deviceManager.list_devices(Gdk.DeviceType.MASTER):
device.ungrab(Gdk.CURRENT_TIME)
def lock(self):
self.show_all()
def unlock(self):
self._ungrabDevices()
self.hide()
self.reset(True)
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