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#!/usr/bin/env python
# coding=utf8
# This file is part of Xpra.
# Copyright (C) 2014-2015 Antoine Martin <antoine@devloop.org.uk>
# Xpra is released under the terms of the GNU GPL v2, or, at your option, any
# later version. See the file COPYING for details.
import sys, os
from xpra.log import Logger
log = Logger("x11", "server", "x11")
from xpra.util import prettify_plug_name
from xpra.os_util import find_lib, find_lib_ldconfig
fakeXinerama_config_files = [
#the new fakexinerama file:
os.path.expanduser("~/.%s-fakexinerama" % os.environ.get("DISPLAY")),
#compat file for "old" version found on github:
os.path.expanduser("~/.fakexinerama"),
]
def find_libfakeXinerama():
if sys.platform.startswith("linux"):
try:
libpath = find_lib_ldconfig("fakeXinerama")
if libpath:
return libpath
except Exception as e:
log.warn("Failed to launch ldconfig -p: %s", e)
return find_lib("libfakeXinerama.so.1.0")
current_xinerama_config = None
def save_fakeXinerama_config(supported=True, source="", ss=[]):
""" returns True if the fakexinerama config was modified """
global current_xinerama_config
def delfile(msg):
global current_xinerama_config
if msg:
log.warn(msg)
cleanup_fakeXinerama()
oldconf = current_xinerama_config
current_xinerama_config = None
return oldconf is not None
if not supported:
return delfile(None)
if len(ss)==0:
return delfile("cannot save fake xinerama settings: no display found")
if len(ss)>1:
return delfile("cannot save fake xinerama settings: more than one display found")
if len(ss)==2 and type(ss[0])==int and type(ss[1])==int:
#just WxH, not enough display information
return delfile("cannot save fake xinerama settings: missing display data from client %s" % source)
display_info = ss[0]
if len(display_info)<10:
return delfile("cannot save fake xinerama settings: incomplete display data from client %s" % source)
#display_name, width, height, width_mm, height_mm, \
#monitors, work_x, work_y, work_width, work_height = s[:11]
monitors = display_info[5]
if len(monitors)>=10:
return delfile("cannot save fake xinerama settings: too many monitors! (%s)" % len(monitors))
#generate the file data:
from xpra import __version__
data = ["# file generated by xpra %s for display %s" % (__version__, os.environ.get("DISPLAY")),
"# %s monitors:" % len(monitors),
"%s" % len(monitors)]
#the new config (numeric values only)
config = [len(monitors)]
for i, m in enumerate(monitors):
if len(m)<7:
return delfile("cannot save fake xinerama settings: incomplete monitor data for monitor: %s" % m)
plug_name, x, y, width, height, wmm, hmm = m[:7]
data.append("# %s (%smm x %smm)" % (prettify_plug_name(plug_name, "monitor %s" % i), wmm, hmm))
data.append("%s %s %s %s" % (x, y, width, height))
config.append((x, y, width, height))
if current_xinerama_config==config:
#we assume that no other process is going to overwrite the deprecated .fakexinerama
log("fake xinerama config unchanged")
return False
current_xinerama_config = config
data.append("")
contents = "\n".join(data)
for filename in fakeXinerama_config_files:
try:
with open(filename, 'wb') as f:
f.write(contents)
except Exception as e:
log.warn("Error writing fake xinerama file '%s':", filename)
log.warn(" %s", e)
log("saved %s monitors to fake xinerama files: %s", len(monitors), fakeXinerama_config_files)
return True
def cleanup_fakeXinerama():
for f in fakeXinerama_config_files:
try:
if os.path.exists(f):
log("cleanup_fakexinerama() deleting fake xinerama file '%s'", f)
os.unlink(f)
except Exception as e:
log.warn("cleanup_fakexinerama() error deleting fake xinerama file '%s': %s", f, e)
def main():
print("libfakeXinerama=%s" % find_libfakeXinerama())
if __name__ == "__main__":
main()
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