feat(plasma): support lock-screen input panels

README.md

@@ -109,7 +109,7 @@ The status commands verify managed integration configuration and, where applicab
 
 `setup-greeter` shows an arrow-key menu of installed supported managers. Scripts can select one directly with `--manager plasma-login`, `--manager greetd`, or `--manager lightdm`. Setup checks the selected manager and its current configuration before writing files. It does not restart the display manager, so reboot or restart it after setup.
 
-Plasma Login Manager and LightDM use their own greeter startup hooks. The greetd adapter saves and wraps the existing default-session command. It starts that command before Axidev OSK, keeps the greeter authoritative, and restores the exact command during removal.
+Plasma Login Manager configures Axidev OSK as KWin's input method for the login manager and session lock screen. Plasma 6.7 setup also adds an exact marked block to Plasma's lock-screen QML so the password interface remains visible while using the keyboard. This integration is limited to Plasma versions from 6.7.0 up to, but not including, 7.0.0. LightDM uses its greeter startup hook. The greetd adapter saves and wraps the existing default-session command, starts that command before Axidev OSK, and restores the exact command during removal.
 
 The keyboard retries with exponential backoff while the greeter remains active. A keyboard or display-detection failure never stops the greeter. Failures appear in the system journal under `axidev-osk-greeter`.
 

packaging/linux/README.md

@@ -160,7 +160,9 @@ sudo axidev-osk linux setup-greeter --manager lightdm
 
 Setup validates every required account, hook, and existing file before changing the manager. It configures one manager and never restarts it. Reboot or restart the selected display manager after setup.
 
-Plasma Login Manager uses an `axidev-osk-greeter.service` user unit tied to `plasma-login-wayland.target`. LightDM uses a `greeter-wrapper` drop-in. greetd replaces only the default-session command line with `/etc/axidev-osk/greetd-session-wrapper`, while `/etc/axidev-osk/greeter.json` keeps the exact original value for removal.
+Plasma Login Manager configures Axidev OSK as KWin's input method for both the login manager and the session lock screen. On Plasma versions from 6.7.0 up to, but not including, 7.0.0, setup also adds one marked block to `/usr/share/plasma/shells/org.kde.plasma.desktop/contents/lockscreen/LockScreenUi.qml`. The block keeps the password interface visible while the pointer uses Axidev OSK. Running setup again restores a block removed by a Plasma package update before reporting any other managed-file drift. Setup and removal refuse partial or edited markers.
+
+LightDM uses a `greeter-wrapper` drop-in. greetd replaces only the default-session command line with `/etc/axidev-osk/greetd-session-wrapper`, while `/etc/axidev-osk/greeter.json` keeps the exact original value for removal.
 
 The LightDM and greetd shell wrappers start the original greeter before invoking the Axidev launcher. A missing Python package, incompatible Qt runtime, keyboard crash, or display-detection error cannot stop the original greeter. The keyboard retries after 1, 2, 4, 8, 16, 32, and then 60 seconds until the greeter exits.
 
@@ -203,7 +205,7 @@ Uninstall stops when permission or autostart cleanup fails. `uninstall --force`
 
 Permission setup manages `/etc/modules-load.d/axidev-osk-uinput.conf` and `/etc/udev/rules.d/70-axidev-io-uinput.rules` through the application command line. Removal deletes only files whose contents still match Axidev OSK's definitions, and it does not unload the shared `uinput` module. Autostart setup manages the selected user's XDG autostart file.
 
-Files owned by a configured manager are conditional. `/etc/axidev-osk/greeter.json` records the selected adapter. Plasma Login Manager owns its user service and target link. LightDM owns its drop-in and wrapper. greetd owns its wrapper and restores the previous command during removal.
+Files owned by a configured manager are conditional. `/etc/axidev-osk/greeter.json` records the selected adapter. Plasma Login Manager owns its KWin input-method desktop entry, systemd drop-in, and KWin configuration. It also adds and removes only the exact marked block in Plasma's lock-screen QML. LightDM owns its drop-in and wrapper. greetd owns its wrapper and restores the previous command during removal.
 
 The uninstaller removes exact managed greeter files before it disables the Axidev OSK uinput rule. It stops on changed files unless `--force` is selected. Shared `uinput` memberships remain in place.
 

src/axidev_osk/app.py

@@ -4,6 +4,7 @@
 
 import ctypes
 import logging
+import os
 import sys
 from importlib.metadata import PackageNotFoundError, version
 from importlib.resources import files
@@ -12,8 +13,11 @@
 from PySide6.QtWidgets import QApplication
 
 from .runtime.application import ApplicationRuntime
+from .runtime.registries import ServiceRegistry
+from .services.keyboard import KeyboardService
+from .services.kwin_lock import KWinLockService
 from .services.single_instance import ExistingInstanceActivated
-from .windows.overlay import prepare_always_on_top_window_environment
+from .windows.overlay import OverlayBackend, prepare_always_on_top_window_environment
 
 
 _logger = logging.getLogger(__name__)
@@ -48,6 +52,21 @@ def _set_application_icon(app: QApplication) -> None:
     app.setWindowIcon(icon)
 
 
+def _input_panel_services(
+    app: QApplication,
+    backend: OverlayBackend,
+    *,
+    lock_lifecycle: bool,
+) -> ServiceRegistry | None:
+    if backend != OverlayBackend.WAYLAND_INPUT_PANEL:
+        return None
+    services = ServiceRegistry()
+    services.register("keyboard", KeyboardService(), autostart=not lock_lifecycle)
+    if lock_lifecycle:
+        services.register("kwin_lock", KWinLockService(parent=app))
+    return services
+
+
 def main() -> int:
     """Run the Axidev OSK Qt application.
 
@@ -68,12 +87,21 @@ def main() -> int:
     )
     _set_process_name("axidev-osk")
     _logger.info("Starting axidev-osk v%s", _package_version())
-    prepare_always_on_top_window_environment()
+    overlay_backend = prepare_always_on_top_window_environment()
+    lock_lifecycle = (
+        overlay_backend == OverlayBackend.WAYLAND_INPUT_PANEL
+        and os.environ.get("AXIDEV_OSK_GREETER") != "1"
+    )
     app = QApplication(sys.argv)
     app.setApplicationName("axidev-osk")
     _set_application_icon(app)
     app.setQuitOnLastWindowClosed(False)
-    runtime = ApplicationRuntime(app)
+    runtime = ApplicationRuntime(
+        app,
+        services=_input_panel_services(app, overlay_backend, lock_lifecycle=lock_lifecycle),
+        confirm_quit=overlay_backend != OverlayBackend.WAYLAND_INPUT_PANEL,
+        show_startup_windows=not lock_lifecycle,
+    )
     try:
         return runtime.start()
     except ExistingInstanceActivated: