def refresh_proxies():
from orangecanvas.main import fix_set_proxy_env
fix_set_proxy_env()
def main(argv=None):
# Allow termination with CTRL + C
signal.signal(signal.SIGINT, signal.SIG_DFL)
# Disable pyqtgraph's atexit and QApplication.aboutToQuit cleanup handlers.
pyqtgraph.setConfigOption("exitCleanup", False)
if argv is None:
argv = sys.argv
usage = "usage: %prog [options] [workflow_file]"
parser = optparse.OptionParser(usage=usage)
parser.add_option("--no-discovery",
action="store_true",
help="Don't run widget discovery "
"(use full cache instead)")
parser.add_option("--force-discovery",
action="store_true",
help="Force full widget discovery "
"(invalidate cache)")
parser.add_option("--clear-widget-settings",
action="store_true",
help="Remove stored widget setting")
parser.add_option("--no-welcome",
action="store_true",
help="Don't show welcome dialog.")
parser.add_option("--no-splash",
action="store_true",
help="Don't show splash screen.")
parser.add_option("-l",
"--log-level",
help="Logging level (0, 1, 2, 3, 4)",
type="int",
default=1)
parser.add_option("--style",
help="QStyle to use",
type="str",
default=None)
parser.add_option("--stylesheet",
help="Application level CSS style sheet to use",
type="str",
default=None)
parser.add_option("--qt",
help="Additional arguments for QApplication",
type="str",
default=None)
(options, args) = parser.parse_args(argv[1:])
levels = [
logging.CRITICAL, logging.ERROR, logging.WARN, logging.INFO,
logging.DEBUG
]
# Fix streams before configuring logging (otherwise it will store
# and write to the old file descriptors)
fix_win_pythonw_std_stream()
# Try to fix macOS automatic window tabbing (Sierra and later)
fix_macos_nswindow_tabbing()
logging.basicConfig(
level=levels[options.log_level],
handlers=[make_stdout_handler(levels[options.log_level])])
# set default application configuration
config_ = config.Config()
canvasconfig.set_default(config_)
log.info("Starting 'Orange Canvas' application.")
qt_argv = argv[:1]
style = options.style
defaultstylesheet = "orange.qss"
fusiontheme = None
if style is not None:
if style.startswith("fusion:"):
qt_argv += ["-style", "fusion"]
_, _, fusiontheme = style.partition(":")
else:
qt_argv += ["-style", style]
if options.qt is not None:
qt_argv += shlex.split(options.qt)
qt_argv += args
if QT_VERSION >= 0x50600:
CanvasApplication.setAttribute(Qt.AA_UseHighDpiPixmaps)
log.debug("Starting CanvasApplicaiton with argv = %r.", qt_argv)
app = CanvasApplication(qt_argv)
config_.init()
if app.style().metaObject().className() == "QFusionStyle":
if fusiontheme == "breeze-dark":
app.setPalette(breeze_dark())
defaultstylesheet = "darkorange.qss"
palette = app.palette()
if style is None and palette.color(QPalette.Window).value() < 127:
log.info("Switching default stylesheet to darkorange")
defaultstylesheet = "darkorange.qss"
# Initialize SQL query and execution time logger (in SqlTable)
sql_level = min(levels[options.log_level], logging.INFO)
make_sql_logger(sql_level)
clear_settings_flag = os.path.join(widget_settings_dir(),
"DELETE_ON_START")
if options.clear_widget_settings or \
os.path.isfile(clear_settings_flag):
log.info("Clearing widget settings")
shutil.rmtree(widget_settings_dir(), ignore_errors=True)
# Set http_proxy environment variables, after (potentially) clearing settings
fix_set_proxy_env()
# Setup file log handler for the select logger list - this is always
# at least INFO
level = min(levels[options.log_level], logging.INFO)
file_handler = logging.FileHandler(filename=os.path.join(
config.log_dir(), "canvas.log"),
mode="w")
formatter = logging.Formatter(
"%(asctime)s:%(levelname)s:%(name)s: %(message)s")
file_handler.setFormatter(formatter)
file_handler.setLevel(level)
stream = TextStream()
stream_handler = logging.StreamHandler(stream)
stream_handler.setFormatter(formatter)
stream_handler.setLevel(level)
for namespace in ["orangecanvas", "orangewidget", "Orange"]:
logger = logging.getLogger(namespace)
logger.setLevel(level)
logger.addHandler(file_handler)
logger.addHandler(stream_handler)
# intercept any QFileOpenEvent requests until the main window is
# fully initialized.
# NOTE: The QApplication must have the executable ($0) and filename
# arguments passed in argv otherwise the FileOpen events are
# triggered for them (this is done by Cocoa, but QApplicaiton filters
# them out if passed in argv)
open_requests = []
def onrequest(url):
log.info("Received an file open request %s", url)
path = url.path()
exists = QFile(path).exists()
if exists and \
('pydevd.py' not in url.path() and # PyCharm debugger
'run_profiler.py' not in url.path()): # PyCharm profiler
open_requests.append(url)
app.fileOpenRequest.connect(onrequest)
settings = QSettings()
settings.setValue('startup/launch-count',
settings.value('startup/launch-count', 0, int) + 1)
if settings.value("reporting/send-statistics", False, type=bool) \
and is_release:
UsageStatistics.set_enabled(True)
stylesheet = options.stylesheet or defaultstylesheet
stylesheet_string = None
if stylesheet != "none":
if os.path.isfile(stylesheet):
with open(stylesheet, "r") as f:
stylesheet_string = f.read()
else:
if not os.path.splitext(stylesheet)[1]:
# no extension
stylesheet = os.path.extsep.join([stylesheet, "qss"])
pkg_name = orangecanvas.__name__
resource = "styles/" + stylesheet
if pkg_resources.resource_exists(pkg_name, resource):
stylesheet_string = \
pkg_resources.resource_string(pkg_name, resource).decode()
base = pkg_resources.resource_filename(pkg_name, "styles")
pattern = re.compile(
r"^\s@([a-zA-Z0-9_]+?)\s*:\s*([a-zA-Z0-9_/]+?);\s*$",
flags=re.MULTILINE)
matches = pattern.findall(stylesheet_string)
for prefix, search_path in matches:
QDir.addSearchPath(prefix, os.path.join(base, search_path))
log.info("Adding search path %r for prefix, %r",
search_path, prefix)
stylesheet_string = pattern.sub("", stylesheet_string)
else:
log.info("%r style sheet not found.", stylesheet)
# Add the default canvas_icons search path
dirpath = os.path.abspath(os.path.dirname(orangecanvas.__file__))
QDir.addSearchPath("canvas_icons", os.path.join(dirpath, "icons"))
canvas_window = MainWindow()
canvas_window.setAttribute(Qt.WA_DeleteOnClose)
canvas_window.setWindowIcon(config.application_icon())
canvas_window.connect_output_stream(stream)
# initialize notification server, set to initial canvas
notif_server = NotificationServer()
canvas.notification_server_instance = notif_server
canvas_window.set_notification_server(notif_server)
if stylesheet_string is not None:
canvas_window.setStyleSheet(stylesheet_string)
if not options.force_discovery:
reg_cache = cache.registry_cache()
else:
reg_cache = None
widget_registry = qt.QtWidgetRegistry()
widget_discovery = config_.widget_discovery(widget_registry,
cached_descriptions=reg_cache)
want_splash = \
settings.value("startup/show-splash-screen", True, type=bool) and \
not options.no_splash
if want_splash:
pm, rect = config.splash_screen()
splash_screen = SplashScreen(pixmap=pm, textRect=rect)
splash_screen.setFont(QFont("Helvetica", 12))
color = QColor("#FFD39F")
def show_message(message):
splash_screen.showMessage(message, color=color)
widget_registry.category_added.connect(show_message)
log.info("Running widget discovery process.")
cache_filename = os.path.join(config.cache_dir(), "widget-registry.pck")
if options.no_discovery:
with open(cache_filename, "rb") as f:
widget_registry = pickle.load(f)
widget_registry = qt.QtWidgetRegistry(widget_registry)
else:
if want_splash:
splash_screen.show()
widget_discovery.run(config.widgets_entry_points())
if want_splash:
splash_screen.hide()
splash_screen.deleteLater()
# Store cached descriptions
cache.save_registry_cache(widget_discovery.cached_descriptions)
with open(cache_filename, "wb") as f:
pickle.dump(WidgetRegistry(widget_registry), f)
set_global_registry(widget_registry)
canvas_window.set_widget_registry(widget_registry)
canvas_window.show()
canvas_window.raise_()
want_welcome = \
settings.value("startup/show-welcome-screen", True, type=bool) \
and not options.no_welcome
# Process events to make sure the canvas_window layout has
# a chance to activate (the welcome dialog is modal and will
# block the event queue, plus we need a chance to receive open file
# signals when running without a splash screen)
app.processEvents()
app.fileOpenRequest.connect(canvas_window.open_scheme_file)
if args:
log.info("Loading a scheme from the command line argument %r", args[0])
canvas_window.load_scheme(args[0])
elif open_requests:
log.info("Loading a scheme from an `QFileOpenEvent` for %r",
open_requests[-1])
canvas_window.load_scheme(open_requests[-1].toLocalFile())
else:
swp_loaded = canvas_window.ask_load_swp_if_exists()
if not swp_loaded and want_welcome:
canvas_window.welcome_dialog()
# local references prevent destruction
update_check = check_for_updates()
send_stat = send_usage_statistics()
pull_notifs = pull_notifications()
# Tee stdout and stderr into Output dock
log_view = canvas_window.output_view()
stdout = TextStream()
stdout.stream.connect(log_view.write)
if sys.stdout:
stdout.stream.connect(sys.stdout.write)
stdout.flushed.connect(sys.stdout.flush)
stderr = TextStream()
error_writer = log_view.formatted(color=Qt.red)
stderr.stream.connect(error_writer.write)
if sys.stderr:
stderr.stream.connect(sys.stderr.write)
stderr.flushed.connect(sys.stderr.flush)
log.info("Entering main event loop.")
excepthook = ExceptHook(stream=stderr)
excepthook.handledException.connect(handle_exception)
try:
with closing(stdout),\
closing(stderr),\
closing(stream), \
patch('sys.excepthook', excepthook),\
patch('sys.stderr', stderr),\
patch('sys.stdout', stdout):
status = app.exec_()
except BaseException:
log.error("Error in main event loop.", exc_info=True)
status = 42
del canvas_window
del update_check
del send_stat
del pull_notifs
app.processEvents()
app.flush()
# Collect any cycles before deleting the QApplication instance
gc.collect()
del app
if status == 96:
log.info('Restarting via exit code 96.')
run_after_exit([sys.executable, sys.argv[0]])
return status
def refresh_proxies():
from orangecanvas.main import fix_set_proxy_env
fix_set_proxy_env()
