gnome-shell/scripts/launcher.py

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3.2 KiB
Python
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from optparse import OptionParser
import os
import subprocess
import sys
class Launcher:
def __init__(self):
self.use_tfp = True
# 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")
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")
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"]
def set_use_tfp(self, use_tfp):
"""Sets whether we try to use GLX_EXT_texture_for_pixmap"""
self.use_tfp = use_tfp
def start_shell(self):
"""Starts gnome-shell. Returns a subprocess.Popen object"""
use_tfp = self.use_tfp
if use_tfp:
# Check if GLX supports GL_ARB_texture_non_power_of_two; currently clutter
# can only use GLX_EXT_texture_for_pixmap if we have that extension.
glxinfo = subprocess.Popen(["glxinfo"], stdout=subprocess.PIPE)
glxinfo_output = glxinfo.communicate()[0]
glxinfo.wait()
use_tfp = "GL_ARB_texture_non_power_of_two" in glxinfo_output
# Now launch metacity-clutter with our plugin
env=dict(os.environ)
env.update({'GNOME_SHELL_JS' : self.js_dir,
'GI_TYPELIB_PATH' : self.plugin_dir,
'LD_LIBRARY_PATH' : os.environ.get('LD_LIBRARY_PATH', '') + ':' + self.plugin_dir})
if use_tfp:
# If we have NPOT textures, then we want to use GLX_EXT_texture_from_pixmap; in
# most cases, we have to force indirect rendering to do this. DRI2 will lift
# that restriction; in which case what we should do is parse the information
# from glxinfo more carefully... if the extension isn't listed under
# "GLX extensions" with LIBGL_ALWAYS_INDIRECT unset, then set LIBGL_ALWAYS_INDIRECT
# and try again.
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)