1 files changed, 168 insertions, 0 deletions
diff --git a/silx/app/view/main.py b/silx/app/view/main.py
new file mode 100644
index 0000000..fc89a22
--- /dev/null
+++ b/silx/app/view/main.py
@@ -0,0 +1,168 @@
+# 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)