diff options
Diffstat (limited to 'silx/gui/data/HexaTableView.py')
| -rw-r--r-- | silx/gui/data/HexaTableView.py | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/silx/gui/data/HexaTableView.py b/silx/gui/data/HexaTableView.py deleted file mode 100644 index 1617f0a..0000000 --- a/silx/gui/data/HexaTableView.py +++ /dev/null @@ -1,286 +0,0 @@ -# coding: utf-8 -# /*########################################################################## -# -# Copyright (c) 2017-2018 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. -# -# ###########################################################################*/ -""" -This module defines model and widget to display raw data using an -hexadecimal viewer. -""" -from __future__ import division - -import collections - -import numpy -import six - -from silx.gui import qt -import silx.io.utils -from silx.gui.widgets.TableWidget import CopySelectedCellsAction - -__authors__ = ["V. Valls"] -__license__ = "MIT" -__date__ = "23/05/2018" - - -class _VoidConnector(object): - """Byte connector to a numpy.void data. - - It uses a cache of 32 x 1KB and a direct read access API from HDF5. - """ - - def __init__(self, data): - self.__cache = collections.OrderedDict() - self.__len = data.itemsize - self.__data = data - - def __getBuffer(self, bufferId): - if bufferId not in self.__cache: - pos = bufferId << 10 - data = self.__data - if hasattr(data, "tobytes"): - data = data.tobytes()[pos:pos + 1024] - else: - # Old fashion - data = data.data[pos:pos + 1024] - - self.__cache[bufferId] = data - if len(self.__cache) > 32: - self.__cache.popitem() - else: - data = self.__cache[bufferId] - return data - - def __getitem__(self, pos): - """Returns the value of the byte at the given position. - - :param uint pos: Position of the byte - :rtype: int - """ - bufferId = pos >> 10 - bufferPos = pos & 0b1111111111 - data = self.__getBuffer(bufferId) - value = data[bufferPos] - if six.PY2: - return ord(value) - else: - return value - - def __len__(self): - """ - Returns the number of available bytes. - - :rtype: uint - """ - return self.__len - - -class HexaTableModel(qt.QAbstractTableModel): - """This data model provides access to a numpy void data. - - Bytes are displayed one by one as a hexadecimal viewer. - - The 16th first columns display bytes as hexadecimal, the last column - displays the same data as ASCII. - - :param qt.QObject parent: Parent object - :param data: A numpy array or a h5py dataset - """ - def __init__(self, parent=None, data=None): - qt.QAbstractTableModel.__init__(self, parent) - - self.__data = None - self.__connector = None - self.setArrayData(data) - - if hasattr(qt.QFontDatabase, "systemFont"): - self.__font = qt.QFontDatabase.systemFont(qt.QFontDatabase.FixedFont) - else: - self.__font = qt.QFont("Monospace") - self.__font.setStyleHint(qt.QFont.TypeWriter) - self.__palette = qt.QPalette() - - def rowCount(self, parent_idx=None): - """Returns number of rows to be displayed in table""" - if self.__connector is None: - return 0 - return ((len(self.__connector) - 1) >> 4) + 1 - - def columnCount(self, parent_idx=None): - """Returns number of columns to be displayed in table""" - return 0x10 + 1 - - def data(self, index, role=qt.Qt.DisplayRole): - """QAbstractTableModel method to access data values - in the format ready to be displayed""" - if not index.isValid(): - return None - - if self.__connector is None: - return None - - row = index.row() - column = index.column() - - if role == qt.Qt.DisplayRole: - if column == 0x10: - start = (row << 4) - text = "" - for i in range(0x10): - pos = start + i - if pos >= len(self.__connector): - break - value = self.__connector[pos] - if value > 0x20 and value < 0x7F: - text += chr(value) - else: - text += "." - return text - else: - pos = (row << 4) + column - if pos < len(self.__connector): - value = self.__connector[pos] - return "%02X" % value - else: - return "" - elif role == qt.Qt.FontRole: - return self.__font - - elif role == qt.Qt.BackgroundColorRole: - pos = (row << 4) + column - if column != 0x10 and pos >= len(self.__connector): - return self.__palette.color(qt.QPalette.Disabled, qt.QPalette.Background) - else: - return None - - return None - - def headerData(self, section, orientation, role=qt.Qt.DisplayRole): - """Returns the 0-based row or column index, for display in the - horizontal and vertical headers""" - if section == -1: - # PyQt4 send -1 when there is columns but no rows - return None - - if role == qt.Qt.DisplayRole: - if orientation == qt.Qt.Vertical: - return "%02X" % (section << 4) - if orientation == qt.Qt.Horizontal: - if section == 0x10: - return "ASCII" - else: - return "%02X" % section - elif role == qt.Qt.FontRole: - return self.__font - elif role == qt.Qt.TextAlignmentRole: - if orientation == qt.Qt.Vertical: - return qt.Qt.AlignRight - if orientation == qt.Qt.Horizontal: - if section == 0x10: - return qt.Qt.AlignLeft - else: - return qt.Qt.AlignCenter - return None - - def flags(self, index): - """QAbstractTableModel method to inform the view whether data - is editable or not. - """ - row = index.row() - column = index.column() - pos = (row << 4) + column - if column != 0x10 and pos >= len(self.__connector): - return qt.Qt.NoItemFlags - return qt.QAbstractTableModel.flags(self, index) - - def setArrayData(self, data): - """Set the data array. - - :param data: A numpy object or a dataset. - """ - if qt.qVersion() > "4.6": - self.beginResetModel() - - self.__connector = None - self.__data = data - if self.__data is not None: - if silx.io.utils.is_dataset(self.__data): - data = data[()] - elif isinstance(self.__data, numpy.ndarray): - data = data[()] - self.__connector = _VoidConnector(data) - - if qt.qVersion() > "4.6": - self.endResetModel() - else: - self.reset() - - def arrayData(self): - """Returns the internal data. - - :rtype: numpy.ndarray of h5py.Dataset - """ - return self.__data - - -class HexaTableView(qt.QTableView): - """TableView using HexaTableModel as default model. - - It customs the column size to provide a better layout. - """ - def __init__(self, parent=None): - """ - Constructor - - :param qt.QWidget parent: parent QWidget - """ - qt.QTableView.__init__(self, parent) - - model = HexaTableModel(self) - self.setModel(model) - self._copyAction = CopySelectedCellsAction(self) - self.addAction(self._copyAction) - - def copy(self): - self._copyAction.trigger() - - def setArrayData(self, data): - """Set the data array. - - :param data: A numpy object or a dataset. - """ - self.model().setArrayData(data) - self.__fixHeader() - - def __fixHeader(self): - """Update the view according to the state of the auto-resize""" - header = self.horizontalHeader() - if qt.qVersion() < "5.0": - setResizeMode = header.setResizeMode - else: - setResizeMode = header.setSectionResizeMode - - header.setDefaultSectionSize(30) - header.setStretchLastSection(True) - for i in range(0x10): - setResizeMode(i, qt.QHeaderView.Fixed) - setResizeMode(0x10, qt.QHeaderView.Stretch) |