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# 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.
#
# ###########################################################################*/
"""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 in ('PyQt4', 'PyQt5'):
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
else: # PyQt4
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':
from PySide2.shiboken2 import isValid # noqa
from PySide2.shiboken2 import createdByPython # noqa
from PySide2.shiboken2 import ownedByPython # noqa
elif qt.BINDING == 'PySide':
try: # Available through PySide
from PySide.shiboken import isValid # noqa
from PySide.shiboken import createdByPython # noqa
from PySide.shiboken import ownedByPython # noqa
except ImportError: # Available through standalone shiboken package
from Shiboken.shiboken import isValid # noqa
from Shiboken.shiboken import createdByPython # noqa
from Shiboken.shiboken import ownedByPython # noqa
else:
raise ImportError("Unsupported Qt binding %s" % qt.BINDING)
__all__ = ['isValid', 'createdByPython', 'ownedByPython']
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