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Diffstat (limited to 'silx/app/view/DataPanel.py')
| -rw-r--r-- | silx/app/view/DataPanel.py | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/silx/app/view/DataPanel.py b/silx/app/view/DataPanel.py new file mode 100644 index 0000000..0653f74 --- /dev/null +++ b/silx/app/view/DataPanel.py @@ -0,0 +1,171 @@ +# coding: utf-8 +# /*########################################################################## +# Copyright (C) 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. +# +# ############################################################################*/ +"""Browse a data file with a GUI""" + +__authors__ = ["V. Valls"] +__license__ = "MIT" +__date__ = "06/06/2018" + +import logging + +from silx.gui import qt +from silx.gui.data.DataViewerFrame import DataViewerFrame + + +_logger = logging.getLogger(__name__) + + +class _HeaderLabel(qt.QLabel): + + def __init__(self, parent=None): + qt.QLabel.__init__(self, parent=parent) + self.setFrameShape(qt.QFrame.StyledPanel) + + def sizeHint(self): + return qt.QSize(10, 30) + + def paintEvent(self, event): + painter = qt.QPainter(self) + + opt = qt.QStyleOptionHeader() + opt.orientation = qt.Qt.Horizontal + opt.text = self.text() + opt.textAlignment = self.alignment() + opt.direction = self.layoutDirection() + opt.fontMetrics = self.fontMetrics() + opt.palette = self.palette() + opt.state = qt.QStyle.State_Active + opt.position = qt.QStyleOptionHeader.Beginning + style = self.style() + + # Background + margin = -1 + opt.rect = self.rect().adjusted(margin, margin, -margin, -margin) + style.drawControl(qt.QStyle.CE_HeaderSection, opt, painter, None) + + # Frame border and text + super(_HeaderLabel, self).paintEvent(event) + + +class DataPanel(qt.QWidget): + + def __init__(self, parent=None, context=None): + qt.QWidget.__init__(self, parent=parent) + + self.__customNxdataItem = None + + self.__dataTitle = _HeaderLabel(self) + self.__dataTitle.setVisible(False) + + self.__dataViewer = DataViewerFrame(self) + self.__dataViewer.setGlobalHooks(context) + + layout = qt.QVBoxLayout(self) + layout.setSpacing(0) + layout.setContentsMargins(0, 0, 0, 0) + layout.addWidget(self.__dataTitle) + layout.addWidget(self.__dataViewer) + + def getData(self): + return self.__dataViewer.data() + + def getCustomNxdataItem(self): + return self.__customNxdataItem + + def setData(self, data): + self.__customNxdataItem = None + self.__dataViewer.setData(data) + self.__dataTitle.setVisible(data is not None) + if data is not None: + self.__dataTitle.setVisible(True) + if hasattr(data, "name"): + if hasattr(data, "file"): + label = str(data.file.filename) + label += "::" + else: + label = "" + label += data.name + else: + label = "" + self.__dataTitle.setText(label) + + def setCustomDataItem(self, item): + self.__customNxdataItem = item + if item is not None: + data = item.getVirtualGroup() + else: + data = None + self.__dataViewer.setData(data) + self.__dataTitle.setVisible(item is not None) + if item is not None: + text = item.text() + self.__dataTitle.setText(text) + + def removeDatasetsFrom(self, root): + """ + Remove all datasets provided by this root + + .. note:: This function do not update data stored inside + customNxdataItem cause in the silx-view context this item is + already updated on his own. + + :param root: The root file of datasets to remove + """ + data = self.__dataViewer.data() + if data is not None: + if data.file is not None: + # That's an approximation, IS can't be used as h5py generates + # To objects for each requests to a node + if data.file.filename == root.file.filename: + self.__dataViewer.setData(None) + + def replaceDatasetsFrom(self, removedH5, loadedH5): + """ + Replace any dataset from any NXdata items using the same dataset name + from another root. + + Usually used when a file was synchronized. + + .. note:: This function do not update data stored inside + customNxdataItem cause in the silx-view context this item is + already updated on his own. + + :param removedRoot: The h5py root file which is replaced + (which have to be removed) + :param loadedRoot: The new h5py root file which have to be used + instread. + """ + + data = self.__dataViewer.data() + if data is not None: + if data.file is not None: + if data.file.filename == removedH5.file.filename: + # Try to synchonize the viewed data + try: + # TODO: It have to update the data without changing the + # view which is not so easy + newData = loadedH5[data.name] + self.__dataViewer.setData(newData) + except Exception: + _logger.debug("Backtrace", exc_info=True) |