diff options
Diffstat (limited to 'silx/gui/data/RecordTableView.py')
| -rw-r--r-- | silx/gui/data/RecordTableView.py | 42 |
1 files changed, 38 insertions, 4 deletions
diff --git a/silx/gui/data/RecordTableView.py b/silx/gui/data/RecordTableView.py index b1b7dcd..2c0011a 100644 --- a/silx/gui/data/RecordTableView.py +++ b/silx/gui/data/RecordTableView.py @@ -1,7 +1,7 @@ # coding: utf-8 # /*########################################################################## # -# Copyright (c) 2017-2018 European Synchrotron Radiation Facility +# Copyright (c) 2017-2021 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 @@ -149,6 +149,10 @@ class RecordTableModel(qt.QAbstractTableModel): :param qt.QObject parent: Parent object :param numpy.ndarray data: A numpy array or a h5py dataset """ + + MAX_NUMBER_OF_ROWS = 10e6 + """Maximum number of display values of the dataset""" + def __init__(self, parent=None, data=None): qt.QAbstractTableModel.__init__(self, parent) @@ -170,7 +174,7 @@ class RecordTableModel(qt.QAbstractTableModel): elif not self.__is_array: return 1 else: - return len(self.__data) + return min(len(self.__data), self.MAX_NUMBER_OF_ROWS) def columnCount(self, parent_idx=None): """Returns number of columns to be displayed in table""" @@ -179,6 +183,15 @@ class RecordTableModel(qt.QAbstractTableModel): else: return len(self.__fields) + def __clippedData(self, role=qt.Qt.DisplayRole): + """Return data for cells representing clipped data""" + if role == qt.Qt.DisplayRole: + return "..." + elif role == qt.Qt.ToolTipRole: + return "Dataset is too large: display is clipped" + else: + return None + def data(self, index, role=qt.Qt.DisplayRole): """QAbstractTableModel method to access data values in the format ready to be displayed""" @@ -188,10 +201,19 @@ class RecordTableModel(qt.QAbstractTableModel): if self.__data is None: return None + # Special display of one before last data for clipped table + if self.__isClipped() and index.row() == self.rowCount() - 2: + return self.__clippedData(role) + if self.__is_array: - if index.row() >= len(self.__data): + row = index.row() + if row >= self.rowCount(): return None - data = self.__data[index.row()] + elif self.__isClipped() and row == self.rowCount() - 1: + # Clipped array, display last value at the end + data = self.__data[-1] + else: + data = self.__data[row] else: if index.row() > 0: return None @@ -221,10 +243,18 @@ class RecordTableModel(qt.QAbstractTableModel): # PyQt4 send -1 when there is columns but no rows return None + # Handle clipping of huge tables + if (self.__isClipped() and + orientation == qt.Qt.Vertical and + section == self.rowCount() - 2): + return self.__clippedData(role) + if role == qt.Qt.DisplayRole: if orientation == qt.Qt.Vertical: if not self.__is_array: return "Scalar" + elif section == self.MAX_NUMBER_OF_ROWS - 1: + return str(len(self.__data) - 1) else: return str(section) if orientation == qt.Qt.Horizontal: @@ -246,6 +276,10 @@ class RecordTableModel(qt.QAbstractTableModel): """ return qt.QAbstractTableModel.flags(self, index) + def __isClipped(self) -> bool: + """Returns whether the displayed array is clipped or not""" + return self.__data is not None and self.__is_array and len(self.__data) > self.MAX_NUMBER_OF_ROWS + def setArrayData(self, data): """Set the data array and the viewing perspective. |