#!/usr/bin/python
#
# handle-dock-change.py
# Copyright (c) 2007, L. David Baron <dbaron@dbaron.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# The GNU General Public License is available at the URL
# http://www.gnu.org/licenses/gpl.txt or from the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA


import dbus, gobject, os, time
# I'll need to change this for the next version of dbus-python
# see http://dbus.freedesktop.org/doc/dbus-python/doc/tutorial.html#setting-up-an-event-loop
# from dbus.mainloop.glib import DBusGMainLoop
# DBusGMainLoop(set_as_default=True)
import dbus.glib

def device_state_changed(added, sender):
    # We don't actually get anything about the monitor itself (although
    # maybe I could if I plugged it into the USB, but that messes up
    # some other things).
    # So listen for changes of whether my keyboard (connected to the
    # same dock) is plugged in.
    # See dbus-monitor --system and lsusb for more information.
    if sender == "/org/freedesktop/Hal/devices/usb_device_10d5_5552_noserial_if0":
        os.system("/usr/bin/aticonfig --enable-monitor=auto --effective=now")
        time.sleep(1) # don't crash the X server
        if added:
            os.system("/usr/bin/xrandr -s 1920x1200")
        else:
            os.system("/usr/bin/xrandr -s 1400x1050")

def device_removed(sender=None):
    device_state_changed(False, sender)

def device_added(sender=None):
    device_state_changed(True, sender)

bus = dbus.SystemBus()
bus.add_signal_receiver(device_removed,
                        "DeviceRemoved",
                        "org.freedesktop.Hal.Manager",
                        "org.freedesktop.Hal",
                        "/org/freedesktop/Hal/Manager")
bus.add_signal_receiver(device_added,
                        "DeviceAdded",
                        "org.freedesktop.Hal.Manager",
                        "org.freedesktop.Hal",
                        "/org/freedesktop/Hal/Manager")

loop = gobject.MainLoop()
loop.run()