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Diffstat (limited to 'silx/app/view.py')
| -rw-r--r-- | silx/app/view.py | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/silx/app/view.py b/silx/app/view.py new file mode 100644 index 0000000..e8507f4 --- /dev/null +++ b/silx/app/view.py @@ -0,0 +1,296 @@ +# coding: utf-8 +# /*########################################################################## +# Copyright (C) 2016-2017 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. +# +# ############################################################################*/ +"""Browse a data file with a GUI""" + +__authors__ = ["V. Valls"] +__license__ = "MIT" +__date__ = "02/10/2017" + +import sys +import os +import argparse +import logging +import collections + +_logger = logging.getLogger(__name__) +"""Module logger""" + +from silx.gui import qt + + +class Viewer(qt.QMainWindow): + """ + This window allows to browse a data file like images or HDF5 and it's + content. + """ + + def __init__(self): + """ + :param files_: List of HDF5 or Spec files (pathes or + :class:`silx.io.spech5.SpecH5` or :class:`h5py.File` + instances) + """ + # Import it here to be sure to use the right logging level + import silx.gui.hdf5 + from silx.gui.data.DataViewerFrame import DataViewerFrame + + qt.QMainWindow.__init__(self) + self.setWindowTitle("Silx viewer") + + self.__asyncload = False + self.__dialogState = None + self.__treeview = silx.gui.hdf5.Hdf5TreeView(self) + """Silx HDF5 TreeView""" + + self.__dataViewer = DataViewerFrame(self) + vSpliter = qt.QSplitter(qt.Qt.Vertical) + vSpliter.addWidget(self.__dataViewer) + vSpliter.setSizes([10, 0]) + + spliter = qt.QSplitter(self) + spliter.addWidget(self.__treeview) + spliter.addWidget(vSpliter) + spliter.setStretchFactor(1, 1) + + main_panel = qt.QWidget(self) + layout = qt.QVBoxLayout() + layout.addWidget(spliter) + layout.setStretchFactor(spliter, 1) + main_panel.setLayout(layout) + + self.setCentralWidget(main_panel) + + model = self.__treeview.selectionModel() + model.selectionChanged.connect(self.displayData) + self.__treeview.addContextMenuCallback(self.closeAndSyncCustomContextMenu) + + treeModel = self.__treeview.findHdf5TreeModel() + columns = list(treeModel.COLUMN_IDS) + columns.remove(treeModel.DESCRIPTION_COLUMN) + columns.remove(treeModel.NODE_COLUMN) + self.__treeview.header().setSections(columns) + + self.createActions() + self.createMenus() + + def createActions(self): + action = qt.QAction("E&xit", self) + action.setShortcuts(qt.QKeySequence.Quit) + action.setStatusTip("Exit the application") + action.triggered.connect(self.close) + self._exitAction = action + + action = qt.QAction("&Open", self) + action.setStatusTip("Open a file") + action.triggered.connect(self.open) + self._openAction = action + + action = qt.QAction("&About", self) + action.setStatusTip("Show the application's About box") + action.triggered.connect(self.about) + self._aboutAction = action + + def createMenus(self): + fileMenu = self.menuBar().addMenu("&File") + fileMenu.addAction(self._openAction) + fileMenu.addSeparator() + fileMenu.addAction(self._exitAction) + helpMenu = self.menuBar().addMenu("&Help") + helpMenu.addAction(self._aboutAction) + + def open(self): + dialog = self.createFileDialog() + if self.__dialogState is None: + currentDirectory = os.getcwd() + dialog.setDirectory(currentDirectory) + else: + dialog.restoreState(self.__dialogState) + + result = dialog.exec_() + if not result: + return + + self.__dialogState = dialog.saveState() + + filenames = dialog.selectedFiles() + for filename in filenames: + self.appendFile(filename) + + def createFileDialog(self): + dialog = qt.QFileDialog(self) + dialog.setWindowTitle("Open") + dialog.setModal(True) + + extensions = collections.OrderedDict() + # expect h5py + extensions["HDF5 files"] = "*.h5 *.hdf" + extensions["NeXus files"] = "*.nx *.nxs *.h5 *.hdf" + # no dependancy + extensions["NeXus layout from spec files"] = "*.dat *.spec *.mca" + extensions["Numpy binary files"] = "*.npz *.npy" + # expect fabio + extensions["NeXus layout from raster images"] = "*.edf *.tif *.tiff *.cbf *.mccd" + extensions["NeXus layout from EDF files"] = "*.edf" + extensions["NeXus layout from TIFF image files"] = "*.tif *.tiff" + extensions["NeXus layout from CBF files"] = "*.cbf" + extensions["NeXus layout from MarCCD image files"] = "*.mccd" + + filters = [] + filters.append("All supported files (%s)" % " ".join(extensions.values())) + for name, extension in extensions.items(): + filters.append("%s (%s)" % (name, extension)) + filters.append("All files (*)") + + dialog.setNameFilters(filters) + dialog.setFileMode(qt.QFileDialog.ExistingFiles) + return dialog + + def about(self): + from . import qtutils + qtutils.About.about(self, "Silx viewer") + + def appendFile(self, filename): + self.__treeview.findHdf5TreeModel().appendFile(filename) + + def displayData(self): + """Called to update the dataviewer with the selected data. + """ + selected = list(self.__treeview.selectedH5Nodes(ignoreBrokenLinks=False)) + if len(selected) == 1: + # Update the viewer for a single selection + data = selected[0] + self.__dataViewer.setData(data) + + def useAsyncLoad(self, useAsync): + self.__asyncload = useAsync + + def closeAndSyncCustomContextMenu(self, event): + """Called to populate the context menu + + :param silx.gui.hdf5.Hdf5ContextMenuEvent event: Event + containing expected information to populate the context menu + """ + selectedObjects = event.source().selectedH5Nodes(ignoreBrokenLinks=False) + menu = event.menu() + + if len(menu.children()): + menu.addSeparator() + + # Import it here to be sure to use the right logging level + import h5py + for obj in selectedObjects: + if obj.ntype is h5py.File: + action = qt.QAction("Remove %s" % obj.local_filename, event.source()) + action.triggered.connect(lambda: self.__treeview.findHdf5TreeModel().removeH5pyObject(obj.h5py_object)) + menu.addAction(action) + action = qt.QAction("Synchronize %s" % obj.local_filename, event.source()) + action.triggered.connect(lambda: self.__treeview.findHdf5TreeModel().synchronizeH5pyObject(obj.h5py_object)) + menu.addAction(action) + + +def main(argv): + """ + Main function to launch the viewer as an application + + :param argv: Command line arguments + :returns: exit status + """ + 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)') + + 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) + hdf5plugin = None + + 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 + + if hdf5plugin is None: + message = "Module 'hdf5plugin' is not installed. It supports some hdf5"\ + + " compressions. You can install it using \"pip install hdf5plugin\"." + _logger.warning(message) + + # + # Run the application + # + + if options.use_opengl_plot: + from silx.gui.plot import PlotWidget + PlotWidget.setDefaultBackend("opengl") + + app = qt.QApplication([]) + qt.QLocale.setDefault(qt.QLocale.c()) + + sys.excepthook = qt.exceptionHandler + window = Viewer() + window.resize(qt.QSize(640, 480)) + + 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 |