+#define wxPlatform "__WXMSW__"
+#define wxPlatName "wxMSW"
+#endif
+#ifdef __WXMAC__
+#define wxPlatform "__WXMAC__"
+#define wxPlatName "wxMac"
+#endif
+
+#ifdef __WXDEBUG__
+ int wxdebug = 1;
+#else
+ int wxdebug = 0;
+#endif
+
+ // These should be deprecated in favor of the PlatformInfo tuple built below...
+ PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
+ PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
+ PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
+
+ // Make a tuple of strings that gives more info about the platform.
+ PyObject* PlatInfo = PyList_New(0);
+ PyObject* obj;
+
+#define _AddInfoString(st) \
+ obj = PyString_FromString(st); \
+ PyList_Append(PlatInfo, obj); \
+ Py_DECREF(obj)
+
+ _AddInfoString(wxPlatform);
+ _AddInfoString(wxPlatName);
+#if wxUSE_UNICODE
+ _AddInfoString("unicode");
+#else
+ _AddInfoString("ansi");
+#endif
+#ifdef __WXGTK__
+#ifdef __WXGTK20__
+ _AddInfoString("gtk2");
+#else
+ _AddInfoString("gtk1");
+#endif
+#endif
+#ifdef __WXDEBUG__
+ _AddInfoString("wx-assertions-on");
+#else
+ _AddInfoString("wx-assertions-off");
+#endif
+ _AddInfoString(wxPy_SWIG_VERSION);
+
+#undef _AddInfoString
+
+ PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
+ Py_DECREF(PlatInfo);
+ PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
+
+ RETURN_NONE();
+}
+
+
+
+//---------------------------------------------------------------------------
+
+// Check for existence of a wxApp, setting an exception if there isn't one.
+// This doesn't need to aquire the GIL because it should only be called from
+// an %exception before the lock is released.
+
+bool wxPyCheckForApp() {
+ if (wxTheApp != NULL)
+ return true;
+ else {
+ PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
+ return false;
+ }
+}
+
+//---------------------------------------------------------------------------
+
+void wxPyUserData_dtor(wxPyUserData* self) {
+ if (! wxPyDoingCleanup) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ Py_DECREF(self->m_obj);
+ self->m_obj = NULL;
+ wxPyEndBlockThreads(blocked);
+ }
+}
+
+
+void wxPyClientData_dtor(wxPyClientData* self) {
+ if (! wxPyDoingCleanup) { // Don't do it during cleanup as Python
+ // may have already garbage collected the object...
+ if (self->m_incRef) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ Py_DECREF(self->m_obj);
+ wxPyEndBlockThreads(blocked);
+ }
+ self->m_obj = NULL;
+ }
+}
+
+
+
+// This is called when an OOR controled object is being destroyed. Although
+// the C++ object is going away there is no way to force the Python object
+// (and all references to it) to die too. This causes problems (crashes) in
+// wxPython when a python shadow object attempts to call a C++ method using
+// the now bogus pointer... So to try and prevent this we'll do a little black
+// magic and change the class of the python instance to a class that will
+// raise an exception for any attempt to call methods with it. See
+// _wxPyDeadObject in _core_ex.py for the implementation of this class.
+void wxPyOORClientData_dtor(wxPyOORClientData* self) {
+
+ static PyObject* deadObjectClass = NULL;
+
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ if (deadObjectClass == NULL) {
+ deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
+ // TODO: Can not wxASSERT here because inside a wxPyBeginBlock Threads,
+ // will lead to a deadlock when it tries to aquire the GIL again.
+ //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
+ Py_INCREF(deadObjectClass);
+ }
+
+
+ // Only if there is more than one reference to the object and we are
+ // holding the OOR reference:
+ if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
+ // bool isInstance = wxPyInstance_Check(self->m_obj);
+ // TODO same here
+ //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
+
+ // Call __del__, if there is one.
+ PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
+ if (func) {
+ PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
+ Py_XDECREF(rv);
+ Py_DECREF(func);
+ }
+ if (PyErr_Occurred())
+ PyErr_Clear(); // just ignore it for now
+
+
+ PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
+ if (dict) {
+ // Clear the instance's dictionary
+ PyDict_Clear(dict);
+
+ // put the name of the old class into the instance, and then reset the
+ // class to be the dead class.
+ PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
+ PyObject* name = PyObject_GetAttrString(klass, "__name__");
+ PyDict_SetItemString(dict, "_name", name);
+ PyObject_SetAttrString(self->m_obj, "__class__", deadObjectClass);
+ //Py_INCREF(deadObjectClass);
+ Py_DECREF(klass);
+ Py_DECREF(name);
+ }
+ }
+
+ // m_obj is DECREF'd in the base class dtor...
+ wxPyEndBlockThreads(blocked);
+}
+
+
+//---------------------------------------------------------------------------
+// Stuff used by OOR to find the right wxPython class type to return and to
+// build it.
+
+
+// The pointer type map is used when the "pointer" type name generated by SWIG
+// is not the same as the shadow class name, for example wxPyTreeCtrl
+// vs. wxTreeCtrl. It needs to be referenced in Python as well as from C++,
+// so we'll just make it a Python dictionary in the wx module's namespace.
+// (See __wxSetDictionary)
+void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
+ if (! wxPyPtrTypeMap)
+ wxPyPtrTypeMap = PyDict_New();
+ PyDict_SetItemString(wxPyPtrTypeMap,
+ (char*)commonName,
+ PyString_FromString((char*)ptrName));
+}
+
+
+
+
+PyObject* wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
+ PyObject* target = NULL;
+ bool isEvtHandler = false;
+ bool isSizer = false;
+
+ if (source) {
+ // If it's derived from wxEvtHandler then there may
+ // already be a pointer to a Python object that we can use
+ // in the OOR data.
+ if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
+ isEvtHandler = true;
+ wxEvtHandler* eh = (wxEvtHandler*)source;
+ wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
+ if (data) {
+ target = data->m_obj;
+ if (target)
+ Py_INCREF(target);
+ }
+ }
+
+ // Also check for wxSizer
+ if (!target && wxIsKindOf(source, wxSizer)) {
+ isSizer = true;
+ wxSizer* sz = (wxSizer*)source;
+ wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
+ if (data) {
+ target = data->m_obj;
+ if (target)
+ Py_INCREF(target);
+ }
+ }
+
+ if (! target) {
+ // Otherwise make it the old fashioned way by making a new shadow
+ // object and putting this pointer in it. Look up the class
+ // heirarchy until we find a class name that is located in the
+ // python module.
+ const wxClassInfo* info = source->GetClassInfo();
+ wxString name = info->GetClassName();
+ bool exists = wxPyCheckSwigType(name);
+ while (info && !exists) {
+ info = info->GetBaseClass1();
+ name = info->GetClassName();
+ exists = wxPyCheckSwigType(name);
+ }
+ if (info) {
+ target = wxPyConstructObject((void*)source, name, setThisOwn);
+ if (target && isEvtHandler)
+ ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
+ if (target && isSizer)
+ ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
+ } else {
+ wxString msg(wxT("wxPython class not found for "));
+ msg += source->GetClassInfo()->GetClassName();
+ PyErr_SetString(PyExc_NameError, msg.mbc_str());
+ target = NULL;
+ }
+ }
+ } else { // source was NULL so return None.
+ Py_INCREF(Py_None); target = Py_None;
+ }
+ return target;
+}
+
+
+PyObject* wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
+
+ return wxPyMake_wxObject(source, setThisOwn);
+}
+
+
+//---------------------------------------------------------------------------
+
+
+#ifdef WXP_WITH_THREAD
+#if !wxPyUSE_GIL_STATE
+
+inline
+unsigned long wxPyGetCurrentThreadId() {
+ return wxThread::GetCurrentId();
+}
+
+static wxPyThreadState gs_shutdownTState;
+
+static
+wxPyThreadState* wxPyGetThreadState() {
+ if (wxPyTMutex == NULL) // Python is shutting down...
+ return &gs_shutdownTState;
+
+ unsigned long ctid = wxPyGetCurrentThreadId();
+ wxPyThreadState* tstate = NULL;
+
+ wxPyTMutex->Lock();
+ for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
+ wxPyThreadState& info = wxPyTStates->Item(i);
+ if (info.tid == ctid) {
+ tstate = &info;
+ break;
+ }
+ }
+ wxPyTMutex->Unlock();
+ wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
+ return tstate;
+}
+
+
+static
+void wxPySaveThreadState(PyThreadState* tstate) {
+ if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
+ gs_shutdownTState.tstate = tstate;
+ return;
+ }
+ unsigned long ctid = wxPyGetCurrentThreadId();
+ wxPyTMutex->Lock();
+ for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
+ wxPyThreadState& info = wxPyTStates->Item(i);
+ if (info.tid == ctid) {
+#if 0
+ if (info.tstate != tstate)
+ wxLogMessage("*** tstate mismatch!???");
+#endif
+ info.tstate = tstate; // allow for transient tstates
+ // Normally it will never change, but apparently COM callbacks
+ // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
+ // tstate which will then be garbage the next time we try to use
+ // it...
+
+ wxPyTMutex->Unlock();
+ return;
+ }
+ }
+ // not found, so add it...
+ wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
+ wxPyTMutex->Unlock();
+}
+
+#endif
+#endif
+
+
+
+// Calls from Python to wxWindows code are wrapped in calls to these
+// functions:
+
+PyThreadState* wxPyBeginAllowThreads() {
+#ifdef WXP_WITH_THREAD
+ PyThreadState* saved = PyEval_SaveThread(); // Py_BEGIN_ALLOW_THREADS;
+#if !wxPyUSE_GIL_STATE
+ wxPySaveThreadState(saved);
+#endif
+ return saved;
+#else
+ return NULL;
+#endif
+}
+
+void wxPyEndAllowThreads(PyThreadState* saved) {
+#ifdef WXP_WITH_THREAD
+ PyEval_RestoreThread(saved); // Py_END_ALLOW_THREADS;
+#endif
+}
+
+
+
+// Calls from wxWindows back to Python code, or even any PyObject
+// manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
+
+wxPyBlock_t wxPyBeginBlockThreads() {
+#ifdef WXP_WITH_THREAD
+ if (! Py_IsInitialized()) {
+ return (wxPyBlock_t)0;
+ }
+#if wxPyUSE_GIL_STATE
+ PyGILState_STATE state = PyGILState_Ensure();
+ return state;
+#else
+ PyThreadState *current = _PyThreadState_Current;
+
+ // Only block if there wasn't already a tstate, or if the current one is
+ // not the one we are wanting to change to. This should prevent deadlock
+ // if there are nested calls to wxPyBeginBlockThreads
+ wxPyBlock_t blocked = false;
+ wxPyThreadState* tstate = wxPyGetThreadState();
+ if (current != tstate->tstate) {
+ PyEval_RestoreThread(tstate->tstate);
+ blocked = true;
+ }
+ return blocked;
+#endif
+#else
+ return (wxPyBlock_t)0;
+#endif
+}
+
+
+void wxPyEndBlockThreads(wxPyBlock_t blocked) {
+#ifdef WXP_WITH_THREAD
+ if (! Py_IsInitialized()) {
+ return;
+ }
+#if wxPyUSE_GIL_STATE
+ PyGILState_Release(blocked);
+#else
+ // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
+ // The value of blocked passed in needs to be the same as that returned
+ // from wxPyBeginBlockThreads at the same nesting level.
+ if ( blocked ) {
+ PyEval_SaveThread();
+ }
projects / wxWidgets.git / blobdiff