+// 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();
+ }
+#endif
+#endif
+}
+
+
+//---------------------------------------------------------------------------
+// wxPyInputStream and wxPyCBInputStream methods
+
+
+void wxPyInputStream::close() {
+ /* do nothing for now */
+}
+
+void wxPyInputStream::flush() {
+ /* do nothing for now */
+}
+
+bool wxPyInputStream::eof() {
+ if (m_wxis)
+ return m_wxis->Eof();
+ else
+ return true;
+}
+
+wxPyInputStream::~wxPyInputStream() {
+ if (m_wxis)
+ delete m_wxis;
+}
+
+
+
+
+PyObject* wxPyInputStream::read(int size) {
+ PyObject* obj = NULL;
+ wxMemoryBuffer buf;
+ const int BUFSIZE = 1024;
+
+ // check if we have a real wxInputStream to work with
+ if (!m_wxis) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
+ wxPyEndBlockThreads(blocked);
+ return NULL;
+ }
+
+ if (size < 0) {
+ // read while bytes are available on the stream
+ while ( m_wxis->CanRead() ) {
+ m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
+ buf.UngetAppendBuf(m_wxis->LastRead());
+ }
+
+ } else { // Read only size number of characters
+ m_wxis->Read(buf.GetWriteBuf(size), size);
+ buf.UngetWriteBuf(m_wxis->LastRead());
+ }
+
+ // error check
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ wxStreamError err = m_wxis->GetLastError();
+ if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
+ PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
+ }
+ else {
+ // We use only strings for the streams, not unicode
+ obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
+ }
+ wxPyEndBlockThreads(blocked);
+ return obj;
+}
+
+
+PyObject* wxPyInputStream::readline(int size) {
+ PyObject* obj = NULL;
+ wxMemoryBuffer buf;
+ int i;
+ char ch;
+
+ // check if we have a real wxInputStream to work with
+ if (!m_wxis) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
+ wxPyEndBlockThreads(blocked);
+ return NULL;
+ }
+
+ // read until \n or byte limit reached
+ for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
+ ch = m_wxis->GetC();
+ buf.AppendByte(ch);
+ }
+
+ // errorcheck
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ wxStreamError err = m_wxis->GetLastError();
+ if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
+ PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
+ }
+ else {
+ // We use only strings for the streams, not unicode
+ obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
+ }
+ wxPyEndBlockThreads(blocked);
+ return obj;
+}
+
+
+PyObject* wxPyInputStream::readlines(int sizehint) {
+ PyObject* pylist;
+
+ // check if we have a real wxInputStream to work with
+ if (!m_wxis) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
+ wxPyEndBlockThreads(blocked);
+ return NULL;
+ }
+
+ // init list
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ pylist = PyList_New(0);
+ wxPyEndBlockThreads(blocked);
+
+ if (!pylist) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ PyErr_NoMemory();
+ wxPyEndBlockThreads(blocked);
+ return NULL;
+ }
+
+ // read sizehint bytes or until EOF
+ int i;
+ for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
+ PyObject* s = this->readline();
+ if (s == NULL) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ Py_DECREF(pylist);
+ wxPyEndBlockThreads(blocked);
+ return NULL;
+ }
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ PyList_Append(pylist, s);
+ i += PyString_Size(s);
+ wxPyEndBlockThreads(blocked);
+ }
+
+ // error check
+ wxStreamError err = m_wxis->GetLastError();
+ if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ Py_DECREF(pylist);
+ PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
+ wxPyEndBlockThreads(blocked);
+ return NULL;
+ }
+
+ return pylist;
+}
+
+
+void wxPyInputStream::seek(int offset, int whence) {
+ if (m_wxis)
+ m_wxis->SeekI(offset, wxSeekMode(whence));
+}
+
+int wxPyInputStream::tell(){
+ if (m_wxis)
+ return m_wxis->TellI();
+ else return 0;
+}
+
+
+
+
+wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
+ : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
+{}
+
+wxPyCBInputStream::wxPyCBInputStream(const wxPyCBInputStream& other)
+{
+ m_read = other.m_read;
+ m_seek = other.m_seek;
+ m_tell = other.m_tell;
+ m_block = other.m_block;
+ Py_INCREF(m_read);
+ Py_INCREF(m_seek);
+ Py_INCREF(m_tell);
+}
+
+
+wxPyCBInputStream::~wxPyCBInputStream() {
+ wxPyBlock_t blocked;
+ if (m_block) blocked = wxPyBeginBlockThreads();
+ Py_XDECREF(m_read);
+ Py_XDECREF(m_seek);
+ Py_XDECREF(m_tell);
+ if (m_block) wxPyEndBlockThreads(blocked);
+}
+
+
+wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
+ wxPyBlock_t blocked;
+ if (block) blocked = wxPyBeginBlockThreads();
+
+ PyObject* read = getMethod(py, "read");
+ PyObject* seek = getMethod(py, "seek");
+ PyObject* tell = getMethod(py, "tell");
+
+ if (!read) {
+ PyErr_SetString(PyExc_TypeError, "Not a file-like object");
+ Py_XDECREF(read);
+ Py_XDECREF(seek);
+ Py_XDECREF(tell);
+ if (block) wxPyEndBlockThreads(blocked);
+ return NULL;
+ }
+
+ if (block) wxPyEndBlockThreads(blocked);
+ return new wxPyCBInputStream(read, seek, tell, block);
+}
+
+
+wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
+ return wxPyCBInputStream::create(py, block);
+}
+
+wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other) {
+ return new wxPyCBInputStream(*other);
+}
+
+PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
+ if (!PyObject_HasAttrString(py, name))
+ return NULL;
+ PyObject* o = PyObject_GetAttrString(py, name);
+ if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
+ Py_DECREF(o);
+ return NULL;
+ }
+ return o;
+}
+
+
+wxFileOffset wxPyCBInputStream::GetLength() const {
+ wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
+ if (m_seek && m_tell) {
+ wxFileOffset temp = self->OnSysTell();
+ wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
+ self->OnSysSeek(temp, wxFromStart);
+ return ret;
+ }
+ else
+ return wxInvalidOffset;
+}
+
+
+size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
+ if (bufsize == 0)
+ return 0;
+
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ PyObject* arglist = Py_BuildValue("(i)", bufsize);
+ PyObject* result = PyEval_CallObject(m_read, arglist);
+ Py_DECREF(arglist);
+
+ size_t o = 0;
+ if ((result != NULL) && PyString_Check(result)) {
+ o = PyString_Size(result);
+ if (o == 0)
+ m_lasterror = wxSTREAM_EOF;
+ if (o > bufsize)
+ o = bufsize;
+ memcpy((char*)buffer, PyString_AsString(result), o); // strings only, not unicode...
+ Py_DECREF(result);
+
+ }
+ else
+ m_lasterror = wxSTREAM_READ_ERROR;
+ wxPyEndBlockThreads(blocked);
+ return o;
+}
+
+size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
+ m_lasterror = wxSTREAM_WRITE_ERROR;
+ return 0;
+}
+
+
+wxFileOffset wxPyCBInputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
+ wxPyBlock_t blocked = wxPyBeginBlockThreads();
+ PyObject* arglist = PyTuple_New(2);
+
+ if (sizeof(wxFileOffset) > sizeof(long))
+ // wxFileOffset is a 64-bit value...
+ PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
+ else
+ PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
projects / wxWidgets.git / blobdiff