Added screensaver support

README.md

@@ -34,6 +34,7 @@ Gruvbox and Dracula themes!
 - PyQt5
 - PyQtWebEngine
 - ruamel.yaml
+- python-xlib
 
 Install PIP dependencies with:
 ```sh

requirements.txt

@@ -2,3 +2,4 @@ PyGObject
 PyQt5
 PyQtWebEngine
 ruamel.yaml
+python-xlib

web-greeter/bridge/Greeter.py

@@ -41,6 +41,7 @@ from PyQt5.QtCore import QFileSystemWatcher, QVariant, QTimer
 
 from config import web_greeter_config
 from utils.battery import Battery
+from utils.screensaver import reset_screensaver
 import globals
 
 # This Application
@@ -396,7 +397,10 @@ class Greeter(BridgeObject):
     def start_session(self, session):
         if not session.strip():
             return
-        return LightDMGreeter.start_session_sync(session)
+        started = LightDMGreeter.start_session_sync(session)
+        if started or self.is_authenticated():
+            reset_screensaver()
+        return started
 
     @Bridge.method(result=bool)
     def suspend(self):

web-greeter/browser/browser.py

@@ -51,6 +51,7 @@ from browser.interceptor import QtUrlRequestInterceptor
 from logger import logger
 from config import web_greeter_config
 from bridge import Greeter, Config, ThemeUtils
+from utils.screensaver import reset_screensaver, set_screensaver
 import resources
 
 # Typing Helpers
@@ -119,10 +120,13 @@ class Application:
 
         self.window.setCursor(Qt.CursorShape.ArrowCursor)
 
+        timeout = web_greeter_config["config"]["greeter"]["screensaver_timeout"]
+        set_screensaver(timeout or 300)
+
         self.app.aboutToQuit.connect(self._before_exit)
 
     def _before_exit(self):
-        pass
+        reset_screensaver()
 
     def show(self):
         self.window.show()

web-greeter/utils/screensaver.py

@@ -0,0 +1,30 @@
+from logger import logger
+from Xlib.display import Display
+
+saved_data: dict[str, int]
+saved = False
+
+display = Display()
+
+def set_screensaver(timeout: int):
+    global saved_data, saved
+    if saved:
+        return
+    display.sync()
+    data: dict[str, int] = display.get_screen_saver()._data or {}
+    saved_data = data
+    saved = True
+
+    display.set_screen_saver(timeout, data["interval"], data["prefer_blanking"], data["allow_exposures"])
+    display.flush()
+    logger.debug("Screensaver timeout set")
+
+def reset_screensaver():
+    global saved_data, saved
+    if not saved:
+        return
+    display.sync()
+    display.set_screen_saver(saved_data["timeout"], saved_data["interval"], saved_data["prefer_blanking"], saved_data["allow_exposures"])
+    display.flush()
+    saved = False
+    logger.debug("Screensaver reset")