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Diffstat (limited to 'src/silx/gui/qt/inspect.py')
-rw-r--r-- | src/silx/gui/qt/inspect.py | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/silx/gui/qt/inspect.py b/src/silx/gui/qt/inspect.py new file mode 100644 index 0000000..b9a0d1d --- /dev/null +++ b/src/silx/gui/qt/inspect.py @@ -0,0 +1,75 @@ +# coding: utf-8 +# /*########################################################################## +# +# Copyright (c) 2018-2021 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 +# 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 provides functions to access Qt C++ object state: + +- :func:`isValid` to check whether a QObject C++ pointer is valid. +- :func:`createdByPython` to check if a QObject was created from Python. +- :func:`ownedByPython` to check if a QObject is currently owned by Python. +""" + +__authors__ = ["T. Vincent"] +__license__ = "MIT" +__date__ = "08/10/2018" + + +from . import _qt as qt + + +if qt.BINDING == 'PyQt5': + try: + from PyQt5.sip import isdeleted as _isdeleted # noqa + from PyQt5.sip import ispycreated as createdByPython # noqa + from PyQt5.sip import ispyowned as ownedByPython # noqa + except ImportError: + from sip import isdeleted as _isdeleted # noqa + from sip import ispycreated as createdByPython # noqa + from sip import ispyowned as ownedByPython # noqa + + + def isValid(obj): + """Returns True if underlying C++ object is valid. + + :param QObject obj: + :rtype: bool + """ + return not _isdeleted(obj) + +elif qt.BINDING == 'PySide2': + try: + from PySide2.shiboken2 import isValid # noqa + from PySide2.shiboken2 import createdByPython # noqa + from PySide2.shiboken2 import ownedByPython # noqa + except ImportError: + from shiboken2 import isValid # noqa + from shiboken2 import createdByPython # noqa + from shiboken2 import ownedByPython # noqa + +elif qt.BINDING == 'PySide6': + from shiboken6 import isValid, createdByPython, ownedByPython # noqa + +else: + raise ImportError("Unsupported Qt binding %s" % qt.BINDING) + +__all__ = ['isValid', 'createdByPython', 'ownedByPython'] |