Source Code for Module common.idle

  1  ## src/common/idle.py 
  2  ## 
  3  ## (C) 2008 Thorsten P. 'dGhvcnN0ZW5wIEFUIHltYWlsIGNvbQ==\n'.decode("base64") 
  4  ## 
  5  ## This file is part of Gajim. 
  6  ## 
  7  ## Gajim is free software; you can redistribute it and/or modify 
  8  ## it under the terms of the GNU General Public License as published 
  9  ## by the Free Software Foundation; version 3 only. 
 10  ## 
 11  ## Gajim is distributed in the hope that it will be useful, 
 12  ## but WITHOUT ANY WARRANTY; without even the implied warranty of 
 13  ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
 14  ## GNU General Public License for more details. 
 15  ## 
 16  ## You should have received a copy of the GNU General Public License 
 17  ## along with Gajim. If not, see <http://www.gnu.org/licenses/>. 
 18   
 19  import ctypes 
 20  import ctypes.util 
 21   
 22 -class XScreenSaverInfo(ctypes.Structure): 
 23      _fields_ = [ 
 24              ('window', ctypes.c_ulong), 
 25              ('state', ctypes.c_int), 
 26              ('kind', ctypes.c_int), 
 27              ('til_or_since', ctypes.c_ulong), 
 28              ('idle', ctypes.c_ulong), 
 29              ('eventMask', ctypes.c_ulong) 
 30      ] 
 31  XScreenSaverInfo_p = ctypes.POINTER(XScreenSaverInfo) 
 32   
 33  display_p = ctypes.c_void_p 
 34  xid = ctypes.c_ulong 
 35  c_int_p = ctypes.POINTER(ctypes.c_int) 
 36   
 37  try: 
 38      libX11path = ctypes.util.find_library('X11') 
 39      if libX11path == None: 
 40          raise OSError('libX11 could not be found.') 
 41      libX11 = ctypes.cdll.LoadLibrary(libX11path) 
 42      libX11.XOpenDisplay.restype = display_p 
 43      libX11.XOpenDisplay.argtypes = ctypes.c_char_p, 
 44      libX11.XDefaultRootWindow.restype = xid 
 45      libX11.XDefaultRootWindow.argtypes = display_p, 
 46   
 47      libXsspath = ctypes.util.find_library('Xss') 
 48      if libXsspath == None: 
 49          raise OSError('libXss could not be found.') 
 50      libXss = ctypes.cdll.LoadLibrary(libXsspath) 
 51      libXss.XScreenSaverQueryExtension.argtypes = display_p, c_int_p, c_int_p 
 52      libXss.XScreenSaverAllocInfo.restype = XScreenSaverInfo_p 
 53      libXss.XScreenSaverQueryInfo.argtypes = (display_p, xid, XScreenSaverInfo_p) 
 54   
 55      dpy_p = libX11.XOpenDisplay(None) 
 56      if dpy_p == None: 
 57          raise OSError('Could not open X Display.') 
 58   
 59      _event_basep = ctypes.c_int() 
 60      _error_basep = ctypes.c_int() 
 61      if libXss.XScreenSaverQueryExtension(dpy_p, ctypes.byref(_event_basep), 
 62                      ctypes.byref(_error_basep)) == 0: 
 63          raise OSError('XScreenSaver Extension not available on display.') 
 64   
 65      xss_info_p = libXss.XScreenSaverAllocInfo() 
 66      if xss_info_p == None: 
 67          raise OSError('XScreenSaverAllocInfo: Out of Memory.') 
 68   
 69      rootwindow = libX11.XDefaultRootWindow(dpy_p) 
 70      xss_available = True 
 71  except OSError, e: 
 72      # Logging? 
 73      xss_available = False 
 74   
 75 -def getIdleSec(): 
 76      global xss_available 
 77      """ 
 78      Return the idle time in seconds 
 79      """ 
 80      if not xss_available: 
 81          return 0 
 82      if libXss.XScreenSaverQueryInfo(dpy_p, rootwindow, xss_info_p) == 0: 
 83          return 0 
 84      else: 
 85          return int(xss_info_p.contents.idle) / 1000 
 86   
 87 -def close(): 
 88      global xss_available 
 89      if xss_available: 
 90          libX11.XFree(xss_info_p) 
 91          libX11.XCloseDisplay(dpy_p) 
 92          xss_available = False 
 93   
 94  if __name__ == '__main__': 
 95      import time 
 96      time.sleep(2.1) 
 97      print getIdleSec() 
 98      close() 
 99      print getIdleSec() 
100