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Diffstat (limited to 'src/silx/app/view/main.py')
| -rw-r--r-- | src/silx/app/view/main.py | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/src/silx/app/view/main.py b/src/silx/app/view/main.py new file mode 100644 index 0000000..dbc6a2b --- /dev/null +++ b/src/silx/app/view/main.py @@ -0,0 +1,186 @@ +# coding: utf-8 +# /*########################################################################## +# Copyright (C) 2016-2021 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__ = "17/01/2019" + +import argparse +import logging +import os +import signal +import sys + + +_logger = logging.getLogger(__name__) +"""Module logger""" + + +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( + '-f', '--fresh', + dest="fresh_preferences", + action="store_true", + default=False, + help='Start the application using new fresh user preferences') + parser.add_argument( + '--hdf5-file-locking', + dest="hdf5_file_locking", + action="store_true", + default=False, + help='Start the application with HDF5 file locking enabled (it is disabled by default)') + return parser + + +def createWindow(parent, settings): + from .Viewer import Viewer + window = Viewer(parent=None, settings=settings) + return window + + +def mainQt(options): + """Part of the main depending on Qt""" + if options.debug: + logging.root.setLevel(logging.DEBUG) + + # + # Import most of the things here to be sure to use the right logging level + # + + # Use max opened files hard limit as soft limit + try: + import resource + except ImportError: + _logger.debug("No resource module available") + else: + if hasattr(resource, 'RLIMIT_NOFILE'): + try: + hard_nofile = resource.getrlimit(resource.RLIMIT_NOFILE)[1] + resource.setrlimit(resource.RLIMIT_NOFILE, (hard_nofile, hard_nofile)) + except (ValueError, OSError): + _logger.warning("Failed to retrieve and set the max opened files limit") + else: + _logger.debug("Set max opened files to %d", hard_nofile) + + # This needs to be done prior to load HDF5 + hdf5_file_locking = 'TRUE' if options.hdf5_file_locking else 'FALSE' + _logger.info('Set HDF5_USE_FILE_LOCKING=%s', hdf5_file_locking) + os.environ['HDF5_USE_FILE_LOCKING'] = hdf5_file_locking + + try: + # it should be loaded before h5py + import hdf5plugin # noqa + except ImportError: + _logger.debug("Backtrace", exc_info=True) + + import h5py + + import silx + import silx.utils.files + from silx.gui import qt + # Make sure matplotlib is configured + # Needed for Debian 8: compatibility between Qt4/Qt5 and old matplotlib + import silx.gui.utils.matplotlib # noqa + + app = qt.QApplication([]) + qt.QLocale.setDefault(qt.QLocale.c()) + + def sigintHandler(*args): + """Handler for the SIGINT signal.""" + qt.QApplication.quit() + + 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() + + window = createWindow(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" + + # NOTE: under Windows, cmd does not convert `*.tif` into existing files + options.files = silx.utils.files.expand_filenames(options.files) + + for filename in options.files: + # TODO: Would be nice to add a process widget and a cancel button + 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 + + +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:]) + mainQt(options) + + +if __name__ == '__main__': + main(sys.argv) |