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# Copyright (c) 2012, Matthias Schiffer <mschiffer@universe-factory.net>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import ctypes
import ctypes.util
from gi.repository import GdkX11
class XScreenSaverInfo(ctypes.Structure):
_fields_ = [
('window', ctypes.c_ulong),
('state', ctypes.c_int),
('kind', ctypes.c_int),
('til_or_since', ctypes.c_ulong),
('idle', ctypes.c_ulong),
('eventMask', ctypes.c_ulong)
]
XScreenSaverInfo_p = ctypes.POINTER(XScreenSaverInfo)
display_p = ctypes.c_void_p
xid = ctypes.c_ulong
c_int_p = ctypes.POINTER(ctypes.c_int)
libXsspath = ctypes.util.find_library('Xss')
if libXsspath == None:
raise OSError('libXss could not be found.')
libXss = ctypes.cdll.LoadLibrary(libXsspath)
libXss.XScreenSaverQueryExtension.argtypes = display_p, c_int_p, c_int_p
libXss.XScreenSaverAllocInfo.restype = XScreenSaverInfo_p
libXss.XScreenSaverQueryInfo.argtypes = (display_p, xid, XScreenSaverInfo_p)
dpy_p = hash(GdkX11.x11_get_default_xdisplay())
rootwindow = GdkX11.x11_get_default_root_xwindow()
_event_basep = ctypes.c_int()
_error_basep = ctypes.c_int()
if libXss.XScreenSaverQueryExtension(ctypes.c_void_p(dpy_p), ctypes.byref(_event_basep),
ctypes.byref(_error_basep)) == 0:
raise OSError('XScreenSaver Extension not available on display.')
xss_info_p = libXss.XScreenSaverAllocInfo()
if xss_info_p == None:
raise OSError('XScreenSaverAllocInfo: Out of Memory.')
def getIdleSec():
if libXss.XScreenSaverQueryInfo(dpy_p, rootwindow, xss_info_p) == 0:
return 0
else:
return int(xss_info_p.contents.idle) / 1000
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