gnome-shell/scripts/launcher.py
2009-02-05 15:35:23 +00:00

134 lines
5.3 KiB
Python

from optparse import OptionParser
import os
import re
import subprocess
import sys
GLXINFO_RE = re.compile(r"^(\S.*):\s*\n((?:^\s+.*\n)*)", re.MULTILINE)
def _get_glx_extensions():
"""Return a tuple of server, client, and effective GLX extensions"""
glxinfo = subprocess.Popen(["glxinfo"], stdout=subprocess.PIPE)
glxinfo_output = glxinfo.communicate()[0]
glxinfo.wait()
glxinfo_map = {}
for m in GLXINFO_RE.finditer(glxinfo_output):
glxinfo_map[m.group(1)] = m.group(2)
server_glx_extensions = set(re.split("\s*,\s*", glxinfo_map['server glx extensions'].strip()))
client_glx_extensions = set(re.split("\s*,\s*", glxinfo_map['client glx extensions'].strip()))
glx_extensions = set(re.split("\s*,\s*", glxinfo_map['GLX extensions'].strip()))
return (server_glx_extensions, client_glx_extensions, glx_extensions)
class Launcher:
def __init__(self, use_tfp=True, accept_geometry=False):
self.use_tfp = use_tfp
# Figure out the path to the plugin when uninstalled
scripts_dir = os.path.dirname(os.path.abspath(sys.argv[0]))
top_dir = os.path.dirname(scripts_dir)
self.plugin_dir = os.path.join(top_dir, "src")
self.js_dir = os.path.join(top_dir, "js")
self.data_dir = os.path.join(top_dir, "data")
parser = OptionParser()
parser.add_option("-g", "--debug", action="store_true",
help="Run under a debugger")
parser.add_option("", "--debug-command", metavar="COMMAND",
help="Command to use for debugging (defaults to 'gdb --args')")
parser.add_option("-v", "--verbose", action="store_true")
if accept_geometry:
parser.add_option("", "--geometry", metavar="GEOMETRY",
help="Specify screen geometry",
default="1024x768");
parser.add_option("-w", "--wide", action="store_true",
help="Use widescreen (1280x800)")
self.options, args = parser.parse_args()
if args:
parser.print_usage()
sys.exit(1)
if self.options.debug_command:
self.options.debug = True
self.debug_command = self.options.debug_command.split()
else:
self.debug_command = ["gdb", "--args"]
if self.options.wide:
self.options.geometry = "1280x800"
def start_shell(self):
"""Starts gnome-shell. Returns a subprocess.Popen object"""
use_tfp = self.use_tfp
force_indirect = False
# Allow disabling usage of the EXT_texture_for_pixmap extension.
# FIXME: Move this to ClutterGlxPixmap like
# CLUTTER_PIXMAP_TEXTURE_RECTANGLE=disable.
if 'GNOME_SHELL_DISABLE_TFP' in os.environ and \
os.environ['GNOME_SHELL_DISABLE_TFP'] != '':
use_tfp = False
if use_tfp:
# Decide if we need to set LIBGL_ALWAYS_INDIRECT=1 to get the texture_from_pixmap
# extension; we take having the extension be supported on both the client and
# server but not in the list of effective extensions as a signal of needing
# to force indirect rendering.
#
# (The Xepyhr DRI support confuses this heuristic but we disable TFP in
# start-in-Xepyhr)
#
(server_glx_extensions, client_glx_extensions, glx_extensions) = _get_glx_extensions()
if ("GLX_EXT_texture_from_pixmap" in server_glx_extensions and
"GLX_EXT_texture_from_pixmap" in client_glx_extensions and
(not "GLX_EXT_texture_from_pixmap" in glx_extensions)):
force_indirect = True
# Now launch metacity-clutter with our plugin
env=dict(os.environ)
env.update({'GNOME_SHELL_JS' : self.js_dir,
'GNOME_SHELL_DATADIR' : self.data_dir,
'GI_TYPELIB_PATH' : self.plugin_dir,
'PATH' : os.environ.get('PATH', '') + ':' + self.plugin_dir,
'LD_LIBRARY_PATH' : os.environ.get('LD_LIBRARY_PATH', '') + ':' + self.plugin_dir,
'GNOME_DISABLE_CRASH_DIALOG' : '1'})
if force_indirect:
if self.options.verbose:
print "Forcing indirect GL"
# This is Mesa specific; the NVIDIA proprietary drivers drivers use
# __GL_FORCE_INDIRECT=1 instead. But we don't need to force indirect
# rendering for NVIDIA.
env['LIBGL_ALWAYS_INDIRECT'] = '1'
if not self.options.verbose:
# Unless verbose() is specified, only let gjs show errors and things that are
# explicitly logged via log() from javascript
env['GJS_DEBUG_TOPICS'] = 'JS ERROR;JS LOG'
if self.options.debug:
args = list(self.debug_command)
else:
args = []
plugin = os.path.join(self.plugin_dir, "libgnome-shell.la")
args.extend(['metacity', '--mutter-plugins=' + plugin, '--replace'])
return subprocess.Popen(args, env=env)
def is_verbose(self):
"""Returns whether the Launcher was started in verbose mode"""
return self.options.verbose
def get_geometry(self):
"""Returns the command-line specified geometry"""
return self.options.geometry