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cura_app.py
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cura_app.py
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#!/usr/bin/env python3
# Copyright (c) 2018 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher.
import argparse
import faulthandler
import os
import sys
from UM.Platform import Platform
parser = argparse.ArgumentParser(prog = "cura",
add_help = False)
parser.add_argument("--debug",
action="store_true",
default = False,
help = "Turn on the debug mode by setting this option."
)
known_args = vars(parser.parse_known_args()[0])
if not known_args["debug"]:
def get_cura_dir_path():
if Platform.isWindows():
return os.path.expanduser("~/AppData/Roaming/cura")
elif Platform.isLinux():
return os.path.expanduser("~/.local/share/cura")
elif Platform.isOSX():
return os.path.expanduser("~/Library/Logs/cura")
if hasattr(sys, "frozen"):
dirpath = get_cura_dir_path()
os.makedirs(dirpath, exist_ok = True)
sys.stdout = open(os.path.join(dirpath, "stdout.log"), "w", encoding = "utf-8")
sys.stderr = open(os.path.join(dirpath, "stderr.log"), "w", encoding = "utf-8")
# WORKAROUND: GITHUB-88 GITHUB-385 GITHUB-612
if Platform.isLinux(): # Needed for platform.linux_distribution, which is not available on Windows and OSX
# For Ubuntu: https://bugs.launchpad.net/ubuntu/+source/python-qt4/+bug/941826
# The workaround is only needed on Ubuntu+NVidia drivers. Other drivers are not affected, but fine with this fix.
try:
import ctypes
from ctypes.util import find_library
libGL = find_library("GL")
ctypes.CDLL(libGL, ctypes.RTLD_GLOBAL)
except:
# GLES-only systems (e.g. ARM Mali) do not have libGL, ignore error
pass
# When frozen, i.e. installer version, don't let PYTHONPATH mess up the search path for DLLs.
if Platform.isWindows() and hasattr(sys, "frozen"):
try:
del os.environ["PYTHONPATH"]
except KeyError:
pass
# WORKAROUND: GITHUB-704 GITHUB-708
# It looks like setuptools creates a .pth file in
# the default /usr/lib which causes the default site-packages
# to be inserted into sys.path before PYTHONPATH.
# This can cause issues such as having libsip loaded from
# the system instead of the one provided with Cura, which causes
# incompatibility issues with libArcus
if "PYTHONPATH" in os.environ.keys(): # If PYTHONPATH is used
PYTHONPATH = os.environ["PYTHONPATH"].split(os.pathsep) # Get the value, split it..
PYTHONPATH.reverse() # and reverse it, because we always insert at 1
for PATH in PYTHONPATH: # Now beginning with the last PATH
PATH_real = os.path.realpath(PATH) # Making the the path "real"
if PATH_real in sys.path: # This should always work, but keep it to be sure..
sys.path.remove(PATH_real)
sys.path.insert(1, PATH_real) # Insert it at 1 after os.curdir, which is 0.
def exceptHook(hook_type, value, traceback):
from cura.CrashHandler import CrashHandler
from cura.CuraApplication import CuraApplication
has_started = False
if CuraApplication.Created:
has_started = CuraApplication.getInstance().started
#
# When the exception hook is triggered, the QApplication may not have been initialized yet. In this case, we don't
# have an QApplication to handle the event loop, which is required by the Crash Dialog.
# The flag "CuraApplication.Created" is set to True when CuraApplication finishes its constructor call.
#
# Before the "started" flag is set to True, the Qt event loop has not started yet. The event loop is a blocking
# call to the QApplication.exec_(). In this case, we need to:
# 1. Remove all scheduled events so no more unnecessary events will be processed, such as loading the main dialog,
# loading the machine, etc.
# 2. Start the Qt event loop with exec_() and show the Crash Dialog.
#
# If the application has finished its initialization and was running fine, and then something causes a crash,
# we run the old routine to show the Crash Dialog.
#
from PyQt5.Qt import QApplication
if CuraApplication.Created:
_crash_handler = CrashHandler(hook_type, value, traceback, has_started)
if CuraApplication.splash is not None:
CuraApplication.splash.close()
if not has_started:
CuraApplication.getInstance().removePostedEvents(None)
_crash_handler.early_crash_dialog.show()
sys.exit(CuraApplication.getInstance().exec_())
else:
_crash_handler.show()
else:
application = QApplication(sys.argv)
application.removePostedEvents(None)
_crash_handler = CrashHandler(hook_type, value, traceback, has_started)
# This means the QtApplication could be created and so the splash screen. Then Cura closes it
if CuraApplication.splash is not None:
CuraApplication.splash.close()
_crash_handler.early_crash_dialog.show()
sys.exit(application.exec_())
# Set exception hook to use the crash dialog handler
sys.excepthook = exceptHook
# Enable dumping traceback for all threads
faulthandler.enable(all_threads = True)
# Workaround for a race condition on certain systems where there
# is a race condition between Arcus and PyQt. Importing Arcus
# first seems to prevent Sip from going into a state where it
# tries to create PyQt objects on a non-main thread.
import Arcus #@UnusedImport
import Savitar #@UnusedImport
from cura.CuraApplication import CuraApplication
app = CuraApplication()
app.run()