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/////////////////////////////////////////////////////////////////////////////
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// Created: 13-Sept-2003
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// RCS-ID: $Id: _core_api.i 60204 2009-04-16 19:23:12Z RD $
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// Copyright: (c) 2003 by Total Control Software
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// Licence: wxWindows license
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/////////////////////////////////////////////////////////////////////////////
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//---------------------------------------------------------------------------
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#ifndef wxPyUSE_EXPORT
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// Helper functions for dealing with SWIG objects and such. These are
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// located here so they know about the SWIG types and functions declared
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// in the wrapper code.
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#include <wx/hashmap.h>
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WX_DECLARE_STRING_HASH_MAP( swig_type_info*, wxPyTypeInfoHashMap );
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// Maintains a hashmap of className to swig_type_info pointers. Given the
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// name of a class either looks up the type info in the cache, or scans the
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// SWIG tables for it.
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extern PyObject* wxPyPtrTypeMap;
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swig_type_info* wxPyFindSwigType(const wxString& className) {
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static wxPyTypeInfoHashMap* typeInfoCache = NULL;
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if (typeInfoCache == NULL)
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typeInfoCache = new wxPyTypeInfoHashMap;
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wxString name(className);
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swig_type_info* swigType = (*typeInfoCache)[name];
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// it wasn't in the cache, so look it up from SWIG
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name.Append(wxT(" *"));
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swigType = SWIG_TypeQuery(name.mb_str());
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// if it still wasn't found, try looking for a mapped name
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if ((item = PyDict_GetItemString(wxPyPtrTypeMap,
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(char*)(const char*)name.mbc_str())) != NULL) {
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name = wxString(PyString_AsString(item), *wxConvCurrent);
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name.Append(wxT(" *"));
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swigType = SWIG_TypeQuery(name.mb_str());
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// and add it to the map if found
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(*typeInfoCache)[className] = swigType;
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// Check if a class name is a type known to SWIG
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bool wxPyCheckSwigType(const wxString& className) {
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swig_type_info* swigType = wxPyFindSwigType(className);
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return swigType != NULL;
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// Given a pointer to a C++ object and a class name, construct a Python proxy
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PyObject* wxPyConstructObject(void* ptr,
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const wxString& className,
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swig_type_info* swigType = wxPyFindSwigType(className);
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wxCHECK_MSG(swigType != NULL, NULL, wxT("Unknown type in wxPyConstructObject"));
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return SWIG_Python_NewPointerObj(ptr, swigType, setThisOwn);
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// Extract a pointer to the wrapped C++ object from a Python proxy object.
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// Ensures that the proxy object is of the specified (or derived) type. If
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// not able to perform the conversion then a Python exception is set and the
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// error should be handled properly in the caller. Returns True on success.
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bool wxPyConvertSwigPtr(PyObject* obj, void **ptr,
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const wxString& className) {
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swig_type_info* swigType = wxPyFindSwigType(className);
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wxCHECK_MSG(swigType != NULL, false, wxT("Unknown type in wxPyConvertSwigPtr"));
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return SWIG_Python_ConvertPtr(obj, ptr, swigType, SWIG_POINTER_EXCEPTION) != -1;
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#if SWIG_VERSION < 0x010328
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// Make a SWIGified pointer object suitable for a .this attribute
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PyObject* wxPyMakeSwigPtr(void* ptr, const wxString& className) {
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PyObject* robj = NULL;
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swig_type_info* swigType = wxPyFindSwigType(className);
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wxCHECK_MSG(swigType != NULL, NULL, wxT("Unknown type in wxPyMakeSwigPtr"));
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#ifdef SWIG_COBJECT_TYPES
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robj = PySwigObject_FromVoidPtrAndDesc((void *) ptr, (char *)swigType->name);
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robj = SWIG_PackVoidPtr(result, ptr, swigType->name, sizeof(result)) ?
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PyString_FromString(result) : 0;
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#else // SWIG_VERSION >= 1.3.28
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// Make a SWIGified pointer object suitable for a .this attribute
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PyObject* wxPyMakeSwigPtr(void* ptr, const wxString& className) {
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PyObject* robj = NULL;
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swig_type_info* swigType = wxPyFindSwigType(className);
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wxCHECK_MSG(swigType != NULL, NULL, wxT("Unknown type in wxPyMakeSwigPtr"));
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robj = PySwigObject_New(ptr, swigType, 0);
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// Python's PyInstance_Check does not return True for instances of new-style
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// classes. This should get close enough for both new and old classes but I
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// should re-evaluate the need for doing instance checks...
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bool wxPyInstance_Check(PyObject* obj) {
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return PyObject_HasAttrString(obj, "__class__") != 0;
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// This one checks if the object is an instance of a SWIG proxy class (it has
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// a .this attribute, and the .this attribute is a PySwigObject.)
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bool wxPySwigInstance_Check(PyObject* obj) {
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static PyObject* this_str = NULL;
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if (this_str == NULL)
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this_str = PyString_FromString("this");
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PyObject* this_attr = PyObject_GetAttr(obj, this_str);
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bool retval = (PySwigObject_Check(this_attr) != 0);
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Py_DECREF(this_attr);
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// Export a C API in a struct. Other modules will be able to load this from
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// the wx._core_ module and will then have safe access to these functions,
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// even if they are located in another shared library.
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static wxPyCoreAPI API = {
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wxPyBeginAllowThreads,
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wxPyBeginBlockThreads,
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NULL, // A function was removed, reserve the slot so the others don't
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wxBitmap_LIST_helper,
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wxString_LIST_helper,
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wxAcceleratorEntry_LIST_helper,
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wxPySimple_typecheck,
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wxPyCBH_setCallbackInfo,
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wxPyCBH_findCallback,
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wxPyCBH_callCallback,
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wxPyCBH_callCallbackObj,
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wxArrayString2PyList_helper,
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wxArrayInt2PyList_helper,
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wxPyOORClientData_dtor,
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wxPyCBInputStream_create,
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wxPyCBInputStream_copy,
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wxPySwigInstance_Check,
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wxArrayDouble2PyList_helper,
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wxPoint2D_LIST_helper,
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wxPyCBOutputStream_create,
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wxPyCBOutputStream_copy,
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wxVariant_out_helper,
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wxPyTextOrBitmap_helper,
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#ifndef wxPyUSE_EXPORT
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// Make our API structure a CObject so other modules can import it
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PyObject* cobj = PyCObject_FromVoidPtr(&API, NULL);
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PyDict_SetItemString(d,"_wxPyCoreAPI", cobj);
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//---------------------------------------------------------------------------