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Diffstat (limited to 'src/jarabe/util/emulator.py')
| -rw-r--r-- | src/jarabe/util/emulator.py | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/src/jarabe/util/emulator.py b/src/jarabe/util/emulator.py new file mode 100644 index 0000000..fda1b59 --- /dev/null +++ b/src/jarabe/util/emulator.py @@ -0,0 +1,185 @@ +# Copyright (C) 2006-2008, Red Hat, Inc. +# +# 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. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +import os +import signal +import subprocess +import sys +import time +from optparse import OptionParser +from gettext import gettext as _ + +import gtk +import gobject + +from sugar import env + + +ERROR_NO_DISPLAY = 30 +ERROR_NO_SERVER = 31 +default_dimensions = (800, 600) + + +def _run_xephyr(display, dpi, dimensions, fullscreen): + cmd = ['Xephyr'] + cmd.append(':%d' % display) + cmd.append('-ac') + cmd += ['-title', _('Sugar in a window')] + + screen_size = (gtk.gdk.screen_width(), gtk.gdk.screen_height()) + + if (not dimensions) and (fullscreen is None) and \ + (screen_size <= default_dimensions): + # no forced settings, screen too small => fit screen + fullscreen = True + elif not dimensions: + # screen is big enough or user has en/disabled fullscreen manually + # => use default size (will get ignored for fullscreen) + dimensions = '%dx%d' % default_dimensions + + if not dpi: + dpi = gtk.settings_get_default().get_property('gtk-xft-dpi') / 1024 + + if fullscreen: + cmd.append('-fullscreen') + + if dimensions: + cmd.append('-screen') + cmd.append(dimensions) + + if dpi: + cmd.append('-dpi') + cmd.append('%d' % dpi) + + cmd.append('-noreset') + + try: + pipe = subprocess.Popen(cmd) + + except OSError, exc: + sys.stderr.write('Error executing server: %s\n' % (exc, )) + return None + + return pipe + + +def _check_server(display): + result = subprocess.call(['xdpyinfo', '-display', ':%d' % display], + stdout=open(os.devnull, 'w'), + stderr=open(os.devnull, 'w')) + return result == 0 + + +def _kill_pipe(pipe): + """Terminate and wait for child process.""" + try: + os.kill(pipe.pid, signal.SIGTERM) + except OSError: + pass + + pipe.wait() + + +def _start_xephyr(dpi, dimensions, fullscreen): + for display in range(30, 40): + if not _check_server(display): + pipe = _run_xephyr(display, dpi, dimensions, fullscreen) + if pipe is None: + return None, None + + for i_ in range(10): + if _check_server(display): + return pipe, display + + time.sleep(0.1) + + _kill_pipe(pipe) + + return None, None + + +def _start_window_manager(): + cmd = ['metacity'] + + cmd.extend(['--no-force-fullscreen']) + + gobject.spawn_async(cmd, flags=gobject.SPAWN_SEARCH_PATH) + + +def _setup_env(display, scaling, emulator_pid): + os.environ['SUGAR_EMULATOR'] = 'yes' + os.environ['GABBLE_LOGFILE'] = os.path.join( + env.get_profile_path(), 'logs', 'telepathy-gabble.log') + os.environ['SALUT_LOGFILE'] = os.path.join( + env.get_profile_path(), 'logs', 'telepathy-salut.log') + os.environ['MC_LOGFILE'] = os.path.join( + env.get_profile_path(), 'logs', 'mission-control.log') + os.environ['STREAM_ENGINE_LOGFILE'] = os.path.join( + env.get_profile_path(), 'logs', 'telepathy-stream-engine.log') + os.environ['DISPLAY'] = ':%d' % (display) + os.environ['SUGAR_EMULATOR_PID'] = emulator_pid + os.environ['MC_ACCOUNT_DIR'] = os.path.join( + env.get_profile_path(), 'accounts') + + if scaling: + os.environ['SUGAR_SCALING'] = scaling + + +def main(): + """Script-level operations""" + + parser = OptionParser() + parser.add_option('-d', '--dpi', dest='dpi', type='int', + help='Emulator dpi') + parser.add_option('-s', '--scaling', dest='scaling', + help='Sugar scaling in %') + parser.add_option('-i', '--dimensions', dest='dimensions', + help='Emulator dimensions (ex. 1200x900)') + parser.add_option('-f', '--fullscreen', dest='fullscreen', + action='store_true', default=None, + help='Run emulator in fullscreen mode') + parser.add_option('-F', '--no-fullscreen', dest='fullscreen', + action='store_false', + help='Do not run emulator in fullscreen mode') + (options, args) = parser.parse_args() + + if not os.environ.get('DISPLAY'): + sys.stderr.write('DISPLAY not set, cannot connect to host X server.\n') + return ERROR_NO_DISPLAY + + server, display = _start_xephyr(options.dpi, options.dimensions, + options.fullscreen) + if server is None: + sys.stderr.write('Failed to start server. Please check output above' + ' for any error message.\n') + return ERROR_NO_SERVER + + _setup_env(display, options.scaling, str(server.pid)) + + command = ['dbus-launch', '--exit-with-session'] + + if not args: + command.append('sugar') + else: + _start_window_manager() + + if args[0].endswith('.py'): + command.append('python') + + command.append(args[0]) + + subprocess.call(command) + _kill_pipe(server) |