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# coding: utf-8
# /*##########################################################################
# Copyright (C) 2016-2018 European Synchrotron Radiation Facility
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# ############################################################################*/
"""Module containing launcher of the `silx view` application"""
__authors__ = ["V. Valls"]
__license__ = "MIT"
__date__ = "07/06/2018"
import sys
import argparse
import logging
import signal
_logger = logging.getLogger(__name__)
"""Module logger"""
if "silx.gui.qt" not in sys.modules:
# Try first PyQt5 and not the priority imposed by silx.gui.qt.
# To avoid problem with unittests we only do it if silx.gui.qt is not
# yet loaded.
# TODO: Can be removed for silx 0.8, as it should be the default binding
# of the silx library.
try:
import PyQt5.QtCore
except ImportError:
pass
import silx
from silx.gui import qt
def sigintHandler(*args):
"""Handler for the SIGINT signal."""
qt.QApplication.quit()
def createParser():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument(
'files',
nargs=argparse.ZERO_OR_MORE,
help='Data file to show (h5 file, edf files, spec files)')
parser.add_argument(
'--debug',
dest="debug",
action="store_true",
default=False,
help='Set logging system in debug mode')
parser.add_argument(
'--use-opengl-plot',
dest="use_opengl_plot",
action="store_true",
default=False,
help='Use OpenGL for plots (instead of matplotlib)')
parser.add_argument(
'--fresh',
dest="fresh_preferences",
action="store_true",
default=False,
help='Start the application using new fresh user preferences')
return parser
def main(argv):
"""
Main function to launch the viewer as an application
:param argv: Command line arguments
:returns: exit status
"""
parser = createParser()
options = parser.parse_args(argv[1:])
if options.debug:
logging.root.setLevel(logging.DEBUG)
#
# Import most of the things here to be sure to use the right logging level
#
try:
# it should be loaded before h5py
import hdf5plugin # noqa
except ImportError:
_logger.debug("Backtrace", exc_info=True)
try:
import h5py
except ImportError:
_logger.debug("Backtrace", exc_info=True)
h5py = None
if h5py is None:
message = "Module 'h5py' is not installed but is mandatory."\
+ " You can install it using \"pip install h5py\"."
_logger.error(message)
return -1
#
# Run the application
#
app = qt.QApplication([])
qt.QLocale.setDefault(qt.QLocale.c())
signal.signal(signal.SIGINT, sigintHandler)
sys.excepthook = qt.exceptionHandler
timer = qt.QTimer()
timer.start(500)
# Application have to wake up Python interpreter, else SIGINT is not
# catched
timer.timeout.connect(lambda: None)
settings = qt.QSettings(qt.QSettings.IniFormat,
qt.QSettings.UserScope,
"silx",
"silx-view",
None)
if options.fresh_preferences:
settings.clear()
from .Viewer import Viewer
window = Viewer(parent=None, settings=settings)
window.setAttribute(qt.Qt.WA_DeleteOnClose, True)
if options.use_opengl_plot:
# It have to be done after the settings (after the Viewer creation)
silx.config.DEFAULT_PLOT_BACKEND = "opengl"
for filename in options.files:
try:
window.appendFile(filename)
except IOError as e:
_logger.error(e.args[0])
_logger.debug("Backtrace", exc_info=True)
window.show()
result = app.exec_()
# remove ending warnings relative to QTimer
app.deleteLater()
return result
if __name__ == '__main__':
main(sys.argv)
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