before find_package(PythonLibs REQUIRED). This enables cmake to detect the
  correct default version of python.

Remove matplotlib backend for Qt4

This reverts commit a88ec036.

This reverts commit c1d710b4.

This reverts commit fc5dce38.

Joseph Mirabel authored 7 years ago and Joseph Mirabel committed 7 years ago

* calls to connect function
* minor changes

Using INSTALL_NAME_DIR target property forces the install name to be an
absolute path instead of `@rpath/{target_name}` [1]. This causes problems
when one tries to relocate the target once it is installed.
This patch removes this target property. If a project needs to keep
the absolute path, CMake variables such as INSTALL_NAME_DIR can be set at
configuration to do so.

[1] https://gitlab.kitware.com/cmake/cmake/issues/16589

added qt 5.6 support by removing dependencies to webkit on versions >…

Based on work from the following individual:
 * Melven Röhrig-Zöllner (https://sourceforge.net/p/pythonqt/discussion/631392/thread/5f20c176/)
 * Julien Finet (@finetjul): See #38)
 * Arnaud Barre (@alzathar):See #15
 * Eric Heim (@eric-h):See #36

This will allow to easily add new exceptions when adding support
for Qt5..

This commit fixes the following link error:

PythonQtTestMain.cpp:(.text+0x1637): undefined reference to `PythonQtTestCleanup::~PythonQtTestCleanup()'

This commit fixes a crash during PythonQt::cleanup(). While destroying the
PythonQtPrivate instance, any remaining PythonQtSignalReceivers that are kept
alive only by their parent object will be destroyed. The crash occurs when
PythonQtSignalReceiver's destructor calls back into
PythonQtPrivate::removeSignalEmitter() when the PythonQtPrivate instance is
mostly destroyed.

Includes test case that crashes without the fix.

Add tests that check for clean cleanup and finalization in different scenarios.

Co-authored-by: Jean-Christophe Fillion-Robin <jchris.fillionr@kitware.com>
Co-authored-by: Pat Marion <james.patrick.marion@gmail.com>

This commit changes initialization of the global storage containers to be
explicit instead of happening during static initialization. This makes the
containers properly initialized if PythonQt is initialized and cleaned up more
than once.

The motivation for this change is to support testing cleanup and finalization.

A sequence of calls like the following would crash in Python when reinitializing
the interpreter the second time:

    PythonQt::init(0);
    ...
    Py_Finalize();

    PythonQt::init(0);
    ...
    Py_Finalize();

This commit fixes a link error building PythonQtCppTests on Windows:

    1>PythonQtCppTests.obj : error LNK2001: unresolved external symbol "int __cdecl tests_PythonQtTestMain(int,char * * const)" (?tests_PythonQtTestMain@@YAHHQEAPEAD@Z)
    1>C:\temp\PythonQt-build\Debug\PythonQtCppTests.exe : fatal error LNK1120: 1 unresolved externals

This commit prevents crashes by handling scenarios such as:
(a) object destruction after the Python interpreter has been finalized
(b) object destruction after cleanup, i.e. the singleton no longer exists

Any usage of a Qt enum demonstrates (a).

One example that demonstrates (b) is a QTimer object which is created with a
QApplication parent. PythonQt::cleanup() is called before the QApplication is
completely destroyed, so the code that handles wrapping the QTimer object must
handle the case when the PythonQt singleton no longer exists.

Co-authored-by: Jean-Christophe Fillion-Robin <jchris.fillionr@kitware.com>

Prior to commit https://github.com/commontk/PythonQt/commit/9c2e489d734758cd63bb7cbe4a0ed6ae6c6ce228, the "name" property was offered as an alias for the "objectName" property. Now, the alias is a compile-time option that is disabled by default.

This commit enables the "name" property alias to maintain backwards compatibility with earlier versions.

In certain situations the dealloc callback
PythonQtInstanceWrapper_dealloc is called after PythonQt::cleanup() has
been run. This can happen when Python destroys objects during
Py_Finalize(). This commit adds a check that PythonQt is still
initialized in the dealloc callback.

This commit increments the refcount of the built-in PyInt_Type instance
when creating an enum wrapper. This is necessary because
PyTuple_SET_ITEM steals a reference to that instance.

Fixing the refcount prevents a crash when calling Py_Finalize().

PyObject_GetAttrString returns a new reference. PyDict_SetItemString
does not steal a reference, so Py_DECREF should be called after
PyDict_SetItemString.