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124 lines
3.6 KiB
Python
124 lines
3.6 KiB
Python
# Copyright (C) 2006, Red Hat, Inc.
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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import os
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import socket
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import sys
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import gobject
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from sugar import env
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def get_display_number():
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"""Find a free display number trying to connect to 6000+ ports"""
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retries = 20
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display_number = 1
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display_is_free = False
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while not display_is_free and retries > 0:
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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try:
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s.connect(('127.0.0.1', 6000 + display_number))
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s.close()
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display_number += 1
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retries -= 1
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except:
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display_is_free = True
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if display_is_free:
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return display_number
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else:
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logging.error('Cannot find a free display.')
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sys.exit(0)
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class Process:
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"""Object representing one of the session processes"""
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def __init__(self, command):
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self._command = command
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def get_name(self):
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return self._command
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def start(self, standard_output=False):
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args = self._command.split()
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flags = gobject.SPAWN_SEARCH_PATH
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result = gobject.spawn_async(args, flags=flags,
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standard_output=standard_output)
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self.pid = result[0]
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self._stdout = result[2]
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class MatchboxProcess(Process):
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def __init__(self, kbd_config):
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options = '-use_titlebar no '
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options += '-theme olpc '
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if kbd_config:
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options += '-kbdconfig %s ' % kbd_config
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command = 'matchbox-window-manager %s ' % options
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Process.__init__(self, command)
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def get_name(self):
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return 'Matchbox'
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class XephyrProcess(Process):
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def __init__(self, width, height, dpi):
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self._display = get_display_number()
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cmd = 'Xephyr :%d -ac ' % (self._display)
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if width > 0 and height > 0:
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cmd += ' -screen %dx%d' % (width, height)
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else:
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cmd += ' -fullscreen '
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if dpi > 0:
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cmd += ' -dpi %d' % (dpi)
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Process.__init__(self, cmd)
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def get_name(self):
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return 'Xephyr'
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def start(self, standard_output=False):
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Process.start(self)
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os.environ['DISPLAY'] = ":%d" % (self._display)
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os.environ['SUGAR_EMULATOR_PID'] = '%d' % self.pid
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class Emulator(object):
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"""The OLPC emulator"""
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def __init__(self, width, height, dpi):
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self._keyboard_config = None
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self._width = width
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self._height = height
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self._dpi = dpi
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def set_keyboard_config(self, config):
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self._keyboard_config = config
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def start(self):
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try:
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process = XephyrProcess(self._width, self._height, self._dpi)
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process.start()
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except:
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print 'Cannot run the emulator. You need to install Xephyr'
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sys.exit(0)
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process = MatchboxProcess(self._keyboard_config)
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process.start()
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