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# To run this script without installing the library, set GI_TYPELIB_PATH and LD_LIBRARY_PATH to the build/src directory
# GI_TYPELIB_PATH=build/src LD_LIBRARY_PATH=build/src python3 examples/session-lock.py
# For GTK4 Layer Shell to get linked before libwayland-client we must explicitly load it before importing with gi
from ctypes import CDLL
CDLL('libgtk4-layer-shell.so')
import gi
gi.require_version('Gtk', '4.0')
gi.require_version('Gtk4SessionLock', '1.0')
from gi.repository import Gtk
from gi.repository import Gdk
from gi.repository import Gtk4SessionLock as SessionLock
class ScreenLock:
def __init__(self):
self.lock_instance = SessionLock.Instance.new()
self.lock_instance.connect('locked', self._on_locked)
self.lock_instance.connect('unlocked', self._on_unlocked)
self.lock_instance.connect('failed', self._on_failed)
self.lock_instance.connect('monitor', self._on_monitor)
def _on_locked(self, lock_instance):
print('Locked!')
def _on_unlocked(self, lock_instance):
print('Unlocked!')
app.quit()
def _on_failed(self, lock_instance):
print('Failed to lock :(')
app.quit()
def _on_monitor(self, lock_instance, monitor):
window = Gtk.Window(application=app)
box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=10)
box.set_halign(Gtk.Align.CENTER)
box.set_valign(Gtk.Align.CENTER)
window.set_child(box)
label = Gtk.Label(label="GTK Session Lock with Python")
box.append(label)
button = Gtk.Button(label='Unlock')
button.connect('clicked', self._on_unlock_clicked)
box.append(button)
self.lock_instance.assign_window_to_monitor(window, monitor)
def _on_unlock_clicked(self, button):
self.lock_instance.unlock()
def lock(self):
self.lock_instance.lock()
app = Gtk.Application(application_id='com.github.wmww.gtk4-layer-shell.py-session-lock')
lock = ScreenLock()
def on_activate(app):
lock.lock()
app.connect('activate', on_activate)
app.run(None)
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