Release Vulpes OS 2.7-preview.24

tundra/runtime/buttons.py

@@ -86,6 +86,7 @@ def control(p):
         wake_recovery.deadline = None
         maximum = int((BACKLIGHT/'max_brightness').read_text())
         (BACKLIGHT/'brightness').write_text(str(max(1, round(maximum * level)) if enabled else 0))
+        set_session_idle(not enabled)
     elif p.get('operation') == 'vibrate':
         vibration.start(p.get('pattern'))
     elif p.get('operation') == 'volume':
@@ -103,6 +104,29 @@ def control(p):
         raise ValueError('NOT_SUPPORTED')
     return True
 
+def set_session_idle(idle):
+    """Tell logind that Gaia has switched the display between active and idle."""
+    try:
+        result = subprocess.run(['/usr/bin/loginctl', 'list-sessions', '--no-legend', '--no-pager'],
+                               capture_output=True, text=True, timeout=3, check=True)
+        sessions = []
+        for line in result.stdout.splitlines():
+            fields = line.split()
+            if len(fields) >= 2 and fields[1] == '32011' and fields[0].isalnum():
+                sessions.append(fields[0])
+        if not sessions:
+            raise RuntimeError('No Tundra logind sessions found')
+        value = 'true' if idle else 'false'
+        for session in sessions:
+            subprocess.run(['/usr/bin/busctl', '--system', 'call', 'org.freedesktop.login1',
+                            '/org/freedesktop/login1/session/'+session,
+                            'org.freedesktop.login1.Session', 'SetIdleHint', 'b', value],
+                           capture_output=True, text=True, timeout=3, check=True)
+        return True
+    except (OSError, RuntimeError, subprocess.SubprocessError) as error:
+        print('TUNDRA_LOGIND_IDLE_FAILED '+str(error), file=sys.stderr, flush=True)
+        return False
+
 def serve():
     SOCKET.parent.mkdir(parents=True, exist_ok=True)
     SOCKET.unlink(missing_ok=True)