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wxWidgets/wxPython/src/helpers.cpp
Robin Dunn 1893b02945 SWIGged updates for wxGTK 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13402 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2002-01-06 01:40:50 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: helpers.cpp
// Purpose: Helper functions/classes for the wxPython extension module
//
// Author: Robin Dunn
//
// Created: 7/1/97
// RCS-ID: $Id$
// Copyright: (c) 1998 by Total Control Software
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
#include <stdio.h> // get the correct definition of NULL
#undef DEBUG
#include <Python.h>
#include "helpers.h"
#ifdef __WXMSW__
#include <wx/msw/private.h>
#include <wx/msw/winundef.h>
#include <wx/msw/msvcrt.h>
#endif
#ifdef __WXGTK__
#include <gtk/gtk.h>
#include <gdk/gdkprivate.h>
#include <wx/gtk/win_gtk.h>
#endif
//----------------------------------------------------------------------
#ifdef __WXGTK__
int WXDLLEXPORT wxEntryStart( int& argc, char** argv );
#else
int WXDLLEXPORT wxEntryStart( int argc, char** argv );
#endif
int WXDLLEXPORT wxEntryInitGui();
void WXDLLEXPORT wxEntryCleanup();
wxPyApp* wxPythonApp = NULL; // Global instance of application object
#ifdef WXP_WITH_THREAD
struct wxPyThreadState {
unsigned long tid;
PyThreadState* tstate;
wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
: tid(_tid), tstate(_tstate) {}
};
#include <wx/dynarray.h>
WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
#include <wx/arrimpl.cpp>
WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
wxPyThreadStateArray* wxPyTStates = NULL;
wxMutex* wxPyTMutex = NULL;
#endif
#ifdef __WXMSW__ // If building for win32...
//----------------------------------------------------------------------
// This gets run when the DLL is loaded. We just need to save a handle.
//----------------------------------------------------------------------
BOOL WINAPI DllMain(
HINSTANCE hinstDLL, // handle to DLL module
DWORD fdwReason, // reason for calling function
LPVOID lpvReserved // reserved
)
{
wxSetInstance(hinstDLL);
return 1;
}
#endif
//----------------------------------------------------------------------
// Classes for implementing the wxp main application shell.
//----------------------------------------------------------------------
wxPyApp::wxPyApp() {
// printf("**** ctor\n");
}
wxPyApp::~wxPyApp() {
// printf("**** dtor\n");
}
// This one isn't acutally called... See __wxStart()
bool wxPyApp::OnInit() {
return FALSE;
}
int wxPyApp::MainLoop() {
int retval = 0;
DeletePendingObjects();
bool initialized = wxTopLevelWindows.GetCount() != 0;
#ifdef __WXGTK__
m_initialized = initialized;
#endif
if (initialized) {
retval = wxApp::MainLoop();
OnExit();
}
return retval;
}
//---------------------------------------------------------------------
//----------------------------------------------------------------------
// This is where we pick up the first part of the wxEntry functionality...
// The rest is in __wxStart and __wxCleanup. This function is called when
// wxcmodule is imported. (Before there is a wxApp object.)
void __wxPreStart()
{
#ifdef __WXMSW__
// wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
#endif
#ifdef WXP_WITH_THREAD
PyEval_InitThreads();
wxPyTStates = new wxPyThreadStateArray;
wxPyTMutex = new wxMutex;
#endif
// Bail out if there is already windows created. This means that the
// toolkit has already been initialized, as in embedding wxPython in
// a C++ wxWindows app.
if (wxTopLevelWindows.Number() > 0)
return;
int argc = 0;
char** argv = NULL;
PyObject* sysargv = PySys_GetObject("argv");
if (sysargv != NULL) {
argc = PyList_Size(sysargv);
argv = new char*[argc+1];
int x;
for(x=0; x<argc; x++)
argv[x] = copystring(PyString_AsString(PyList_GetItem(sysargv, x)));
argv[argc] = NULL;
}
wxEntryStart(argc, argv);
delete [] argv;
}
// Start the user application, user App's OnInit method is a parameter here
PyObject* __wxStart(PyObject* /* self */, PyObject* args)
{
PyObject* onInitFunc = NULL;
PyObject* arglist;
PyObject* result;
long bResult;
if (!PyArg_ParseTuple(args, "O", &onInitFunc))
return NULL;
#if 0 // Try it out without this check, see how it does...
if (wxTopLevelWindows.Number() > 0) {
PyErr_SetString(PyExc_TypeError, "Only 1 wxApp per process!");
return NULL;
}
#endif
// This is the next part of the wxEntry functionality...
int argc = 0;
char** argv = NULL;
PyObject* sysargv = PySys_GetObject("argv");
if (sysargv != NULL) {
argc = PyList_Size(sysargv);
argv = new char*[argc+1];
int x;
for(x=0; x<argc; x++)
argv[x] = copystring(PyString_AsString(PyList_GetItem(sysargv, x)));
argv[argc] = NULL;
}
wxPythonApp->argc = argc;
wxPythonApp->argv = argv;
wxEntryInitGui();
// Call the Python App's OnInit function
arglist = PyTuple_New(0);
result = PyEval_CallObject(onInitFunc, arglist);
if (!result) { // an exception was raised.
return NULL;
}
if (! PyInt_Check(result)) {
PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
return NULL;
}
bResult = PyInt_AS_LONG(result);
if (! bResult) {
PyErr_SetString(PyExc_SystemExit, "OnInit returned FALSE, exiting...");
return NULL;
}
#ifdef __WXGTK__
wxTheApp->m_initialized = (wxTopLevelWindows.GetCount() > 0);
#endif
Py_INCREF(Py_None);
return Py_None;
}
void __wxCleanup() {
wxEntryCleanup();
delete wxPyTMutex;
wxPyTMutex = NULL;
wxPyTStates->Empty();
delete wxPyTStates;
wxPyTStates = NULL;
}
static PyObject* wxPython_dict = NULL;
static PyObject* wxPyPtrTypeMap = NULL;
PyObject* __wxSetDictionary(PyObject* /* self */, PyObject* args)
{
if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
return NULL;
if (!PyDict_Check(wxPython_dict)) {
PyErr_SetString(PyExc_TypeError, "_wxSetDictionary must have dictionary object!");
return NULL;
}
if (! wxPyPtrTypeMap)
wxPyPtrTypeMap = PyDict_New();
PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
#ifdef __WXMOTIF__
#define wxPlatform "__WXMOTIF__"
#endif
#ifdef __WXQT__
#define wxPlatform "__WXQT__"
#endif
#ifdef __WXGTK__
#define wxPlatform "__WXGTK__"
#endif
#if defined(__WIN32__) || defined(__WXMSW__)
#define wxPlatform "__WXMSW__"
#endif
#ifdef __WXMAC__
#define wxPlatform "__WXMAC__"
#endif
PyDict_SetItemString(wxPython_dict, "wxPlatform", PyString_FromString(wxPlatform));
Py_INCREF(Py_None);
return Py_None;
}
//---------------------------------------------------------------------------
// 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.
void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
if (! wxPyPtrTypeMap)
wxPyPtrTypeMap = PyDict_New();
PyDict_SetItemString(wxPyPtrTypeMap,
(char*)commonName,
PyString_FromString((char*)ptrName));
}
PyObject* wxPyClassExists(const char* className) {
if (!className)
return NULL;
char buff[64]; // should always be big enough...
sprintf(buff, "%sPtr", className);
PyObject* classobj = PyDict_GetItemString(wxPython_dict, buff);
return classobj; // returns NULL if not found
}
PyObject* wxPyMake_wxObject(wxObject* source, bool checkEvtHandler) {
PyObject* target = NULL;
bool isEvtHandler = 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;
wxPyClientData* data = (wxPyClientData*)eh->GetClientObject();
if (data) {
target = data->m_obj;
Py_INCREF(target);
}
}
if (! target) {
// Otherwise make it the old fashioned way by making a
// new shadow object and putting this pointer in it.
wxClassInfo* info = source->GetClassInfo();
wxChar* name = (wxChar*)info->GetClassName();
PyObject* klass = wxPyClassExists(name);
while (info && !klass) {
name = (wxChar*)info->GetBaseClassName1();
info = wxClassInfo::FindClass(name);
klass = wxPyClassExists(name);
}
if (info) {
target = wxPyConstructObject(source, name, klass, FALSE);
if (target && isEvtHandler)
((wxEvtHandler*)source)->SetClientObject(new wxPyClientData(target));
} else {
wxString msg("wxPython class not found for ");
msg += source->GetClassInfo()->GetClassName();
PyErr_SetString(PyExc_NameError, msg.c_str());
target = NULL;
}
}
} else { // source was NULL so return None.
Py_INCREF(Py_None); target = Py_None;
}
return target;
}
PyObject* wxPyMake_wxSizer(wxSizer* source) {
PyObject* target = NULL;
if (source && wxIsKindOf(source, wxSizer)) {
// If it's derived from wxSizer then there may
// already be a pointer to a Python object that we can use
// in the OOR data.
wxSizer* sz = (wxSizer*)source;
wxPyClientData* data = (wxPyClientData*)sz->GetClientObject();
if (data) {
target = data->m_obj;
Py_INCREF(target);
}
}
if (! target) {
target = wxPyMake_wxObject(source, FALSE);
if (target != Py_None)
((wxSizer*)source)->SetClientObject(new wxPyClientData(target));
}
return target;
}
//---------------------------------------------------------------------------
PyObject* wxPyConstructObject(void* ptr,
const char* className,
PyObject* klass,
int setThisOwn) {
PyObject* obj;
PyObject* arg;
PyObject* item;
char swigptr[64]; // should always be big enough...
char buff[64];
if ((item = PyDict_GetItemString(wxPyPtrTypeMap, (char*)className)) != NULL) {
className = PyString_AsString(item);
}
sprintf(buff, "_%s_p", className);
SWIG_MakePtr(swigptr, ptr, buff);
arg = Py_BuildValue("(s)", swigptr);
obj = PyInstance_New(klass, arg, NULL);
Py_DECREF(arg);
if (setThisOwn) {
PyObject* one = PyInt_FromLong(1);
PyObject_SetAttrString(obj, "thisown", one);
Py_DECREF(one);
}
return obj;
}
PyObject* wxPyConstructObject(void* ptr,
const char* className,
int setThisOwn) {
PyObject* obj;
if (!ptr) {
Py_INCREF(Py_None);
return Py_None;
}
char buff[64]; // should always be big enough...
sprintf(buff, "%sPtr", className);
wxASSERT_MSG(wxPython_dict, "wxPython_dict is not set yet!!");
PyObject* classobj = PyDict_GetItemString(wxPython_dict, buff);
if (! classobj) {
char temp[128];
sprintf(temp,
"*** Unknown class name %s, tell Robin about it please ***",
buff);
obj = PyString_FromString(temp);
return obj;
}
return wxPyConstructObject(ptr, className, classobj, setThisOwn);
}
//---------------------------------------------------------------------------
// TODO: This should really be wxThread::GetCurrentId(), and I will do so
// after I make a quick 2.3.2.1 release.
#ifdef WXP_WITH_THREAD
#ifdef __WXGTK__ // does wxGTK always use pthreads?
#include <unistd.h>
#include <pthread.h>
#endif
inline
unsigned long wxPyGetCurrentThreadId() {
#ifdef __WXMSW__
return (unsigned long)::GetCurrentThreadId();
#endif
#ifdef __WXGTK__ // does wxGTK always use pthreads?
return (unsigned long)pthread_self();
#endif
#ifdef __WXMAC__
ThreadID current ;
MacGetCurrentThread( &current ) ;
return (unsigned long)current;
#endif
}
static
PyThreadState* wxPyGetThreadState() {
unsigned long ctid = wxPyGetCurrentThreadId();
PyThreadState* tstate = NULL;
wxPyTMutex->Lock();
for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
wxPyThreadState& info = wxPyTStates->Item(i);
if (info.tid == ctid) {
tstate = info.tstate;
break;
}
}
wxPyTMutex->Unlock();
wxASSERT_MSG(tstate, "PyThreadState should not be NULL!");
return tstate;
}
static
void wxPySaveThreadState(PyThreadState* tstate) {
unsigned long ctid = wxPyGetCurrentThreadId();
wxPyTMutex->Lock();
for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
wxPyThreadState& info = wxPyTStates->Item(i);
if (info.tid == ctid) {
info.tstate = tstate;
wxPyTMutex->Unlock();
return;
}
}
// not found, so add it...
wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
wxPyTMutex->Unlock();
}
#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;
wxPySaveThreadState(saved);
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:
void wxPyBeginBlockThreads() {
#ifdef WXP_WITH_THREAD
PyThreadState* tstate = wxPyGetThreadState();
PyEval_RestoreThread(tstate);
#endif
}
void wxPyEndBlockThreads() {
#ifdef WXP_WITH_THREAD
PyThreadState* tstate = PyEval_SaveThread();
// Is there any need to save it again?
#endif
}
//---------------------------------------------------------------------------
IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
wxPyCallback::wxPyCallback(PyObject* func) {
m_func = func;
Py_INCREF(m_func);
}
wxPyCallback::wxPyCallback(const wxPyCallback& other) {
m_func = other.m_func;
Py_INCREF(m_func);
}
wxPyCallback::~wxPyCallback() {
wxPyBeginBlockThreads();
Py_DECREF(m_func);
wxPyEndBlockThreads();
}
// This function is used for all events destined for Python event handlers.
void wxPyCallback::EventThunker(wxEvent& event) {
wxPyCallback* cb = (wxPyCallback*)event.m_callbackUserData;
PyObject* func = cb->m_func;
PyObject* result;
PyObject* arg;
PyObject* tuple;
wxPyBeginBlockThreads();
wxString className = event.GetClassInfo()->GetClassName();
if (className == "wxPyEvent")
arg = ((wxPyEvent*)&event)->GetSelf();
else if (className == "wxPyCommandEvent")
arg = ((wxPyCommandEvent*)&event)->GetSelf();
else
arg = wxPyConstructObject((void*)&event, className);
tuple = PyTuple_New(1);
PyTuple_SET_ITEM(tuple, 0, arg);
result = PyEval_CallObject(func, tuple);
Py_DECREF(tuple);
if (result) {
Py_DECREF(result);
PyErr_Clear(); // Just in case...
} else {
PyErr_Print();
}
wxPyEndBlockThreads();
}
//----------------------------------------------------------------------
wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
m_lastFound = NULL;
m_self = other.m_self;
m_class = other.m_class;
if (m_self) {
Py_INCREF(m_self);
Py_INCREF(m_class);
}
}
void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
m_self = self;
m_class = klass;
m_incRef = incref;
if (incref) {
Py_INCREF(m_self);
Py_INCREF(m_class);
}
}
#if PYTHON_API_VERSION >= 1011
// Prior to Python 2.2 PyMethod_GetClass returned the class object
// in which the method was defined. Starting with 2.2 it returns
// "class that asked for the method" which seems totally bogus to me
// but apprently if fixes some obscure problem waiting to happen in
// Python. Since the API was not documented Guido and the gang felt
// safe in changing it. Needless to say that totally screwed up the
// logic below in wxPyCallbackHelper::findCallback, hence this icky
// code to find the class where the method is actuallt defined...
static
PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
{
int i, n;
if (PyType_Check(klass)) { // new style classes
// This code is borrowed/adapted from _PyType_Lookup in typeobject.c
// (TODO: This part is not tested yet, so I'm not sure it is correct...)
PyTypeObject* type = (PyTypeObject*)klass;
PyObject *mro, *res, *base, *dict;
/* Look in tp_dict of types in MRO */
mro = type->tp_mro;
assert(PyTuple_Check(mro));
n = PyTuple_GET_SIZE(mro);
for (i = 0; i < n; i++) {
base = PyTuple_GET_ITEM(mro, i);
if (PyClass_Check(base))
dict = ((PyClassObject *)base)->cl_dict;
else {
assert(PyType_Check(base));
dict = ((PyTypeObject *)base)->tp_dict;
}
assert(dict && PyDict_Check(dict));
res = PyDict_GetItem(dict, name);
if (res != NULL)
return base;
}
return NULL;
}
else if (PyClass_Check(klass)) { // old style classes
// This code is borrowed/adapted from class_lookup in classobject.c
PyClassObject* cp = (PyClassObject*)klass;
PyObject *value = PyDict_GetItem(cp->cl_dict, name);
if (value != NULL) {
return (PyObject*)cp;
}
n = PyTuple_Size(cp->cl_bases);
for (i = 0; i < n; i++) {
PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
PyObject *v = PyFindClassWithAttr(base, name);
if (v != NULL)
return v;
}
return NULL;
}
}
#endif
static
PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
{
PyObject* mgc = PyMethod_GET_CLASS(method);
#if PYTHON_API_VERSION <= 1010 // prior to Python 2.2, the easy way
return mgc;
#else // 2.2 and after, the hard way...
PyObject* nameo = PyString_FromString(name);
PyObject* klass = PyFindClassWithAttr(mgc, nameo);
Py_DECREF(nameo);
return klass;
#endif
}
bool wxPyCallbackHelper::findCallback(const char* name) const {
wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
self->m_lastFound = NULL;
// If the object (m_self) has an attibute of the given name...
if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
PyObject *method, *klass;
method = PyObject_GetAttrString(m_self, (char*)name);
// ...and if that attribute is a method, and if that method's class is
// not from a base class...
if (PyMethod_Check(method) &&
(klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
((klass == m_class) || PyClass_IsSubclass(klass, m_class))) {
// ...then we'll save a pointer to the method so callCallback can call it.
self->m_lastFound = method;
}
else {
Py_DECREF(method);
}
}
return m_lastFound != NULL;
}
int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
PyObject* result;
int retval = FALSE;
result = callCallbackObj(argTuple);
if (result) { // Assumes an integer return type...
retval = PyInt_AsLong(result);
Py_DECREF(result);
PyErr_Clear(); // forget about it if it's not...
}
return retval;
}
// Invoke the Python callable object, returning the raw PyObject return
// value. Caller should DECREF the return value and also call PyEval_SaveThread.
PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
PyObject* result;
// Save a copy of the pointer in case the callback generates another
// callback. In that case m_lastFound will have a different value when
// it gets back here...
PyObject* method = m_lastFound;
result = PyEval_CallObject(method, argTuple);
Py_DECREF(argTuple);
Py_DECREF(method);
if (!result) {
PyErr_Print();
}
return result;
}
void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
cbh.setSelf(self, klass, incref);
}
bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
return cbh.findCallback(name);
}
int wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
return cbh.callCallback(argTuple);
}
PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
return cbh.callCallbackObj(argTuple);
}
void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
if (cbh->m_incRef) {
wxPyBeginBlockThreads();
Py_XDECREF(cbh->m_self);
Py_XDECREF(cbh->m_class);
wxPyEndBlockThreads();
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// These event classes can be derived from in Python and passed through the event
// system without losing anything. They do this by keeping a reference to
// themselves and some special case handling in wxPyCallback::EventThunker.
wxPyEvtSelfRef::wxPyEvtSelfRef() {
//m_self = Py_None; // **** We don't do normal ref counting to prevent
//Py_INCREF(m_self); // circular loops...
m_cloned = FALSE;
}
wxPyEvtSelfRef::~wxPyEvtSelfRef() {
wxPyBeginBlockThreads();
if (m_cloned)
Py_DECREF(m_self);
wxPyEndBlockThreads();
}
void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
wxPyBeginBlockThreads();
if (m_cloned)
Py_DECREF(m_self);
m_self = self;
if (clone) {
Py_INCREF(m_self);
m_cloned = TRUE;
}
wxPyEndBlockThreads();
}
PyObject* wxPyEvtSelfRef::GetSelf() const {
Py_INCREF(m_self);
return m_self;
}
IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
wxPyEvent::wxPyEvent(int id)
: wxEvent(id) {
}
wxPyEvent::wxPyEvent(const wxPyEvent& evt)
: wxEvent(evt)
{
SetSelf(evt.m_self, TRUE);
}
wxPyEvent::~wxPyEvent() {
}
wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
: wxCommandEvent(commandType, id) {
}
wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
: wxCommandEvent(evt)
{
SetSelf(evt.m_self, TRUE);
}
wxPyCommandEvent::~wxPyCommandEvent() {
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
wxPyTimer::wxPyTimer(PyObject* callback) {
func = callback;
Py_INCREF(func);
}
wxPyTimer::~wxPyTimer() {
wxPyBeginBlockThreads();
Py_DECREF(func);
wxPyEndBlockThreads();
}
void wxPyTimer::Notify() {
if (!func || func == Py_None) {
wxTimer::Notify();
}
else {
wxPyBeginBlockThreads();
PyObject* result;
PyObject* args = Py_BuildValue("()");
result = PyEval_CallObject(func, args);
Py_DECREF(args);
if (result) {
Py_DECREF(result);
PyErr_Clear();
} else {
PyErr_Print();
}
wxPyEndBlockThreads();
}
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
// Convert a wxList to a Python List
PyObject* wxPy_ConvertList(wxListBase* list, const char* className) {
PyObject* pyList;
PyObject* pyObj;
wxObject* wxObj;
wxNode* node = list->First();
wxPyBeginBlockThreads();
pyList = PyList_New(0);
while (node) {
wxObj = node->Data();
pyObj = wxPyMake_wxObject(wxObj); //wxPyConstructObject(wxObj, className);
PyList_Append(pyList, pyObj);
node = node->Next();
}
wxPyEndBlockThreads();
return pyList;
}
//----------------------------------------------------------------------
long wxPyGetWinHandle(wxWindow* win) {
#ifdef __WXMSW__
return (long)win->GetHandle();
#endif
// Find and return the actual X-Window.
#ifdef __WXGTK__
if (win->m_wxwindow) {
GdkWindowPrivate* bwin = (GdkWindowPrivate*)GTK_PIZZA(win->m_wxwindow)->bin_window;
if (bwin) {
return (long)bwin->xwindow;
}
}
#endif
return 0;
}
//----------------------------------------------------------------------
// Some helper functions for typemaps in my_typemaps.i, so they won't be
// included in every file...
byte* byte_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
byte* temp = new byte[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (! PyInt_Check(o)) {
PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
return NULL;
}
temp[x] = (byte)PyInt_AsLong(o);
}
return temp;
}
int* int_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
int* temp = new int[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (! PyInt_Check(o)) {
PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
return NULL;
}
temp[x] = PyInt_AsLong(o);
}
return temp;
}
long* long_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
long* temp = new long[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (! PyInt_Check(o)) {
PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
return NULL;
}
temp[x] = PyInt_AsLong(o);
}
return temp;
}
char** string_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
char** temp = new char*[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (! PyString_Check(o)) {
PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
return NULL;
}
temp[x] = PyString_AsString(o);
}
return temp;
}
//--------------------------------
// Part of patch from Tim Hochberg
static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
if (PyInt_Check(o1) && PyInt_Check(o2)) {
point->x = PyInt_AS_LONG(o1);
point->y = PyInt_AS_LONG(o2);
return true;
}
if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
point->x = (int)PyFloat_AS_DOUBLE(o1);
point->y = (int)PyFloat_AS_DOUBLE(o2);
return true;
}
if (PyInstance_Check(o1) || PyInstance_Check(o2)) {
// Disallow instances because they can cause havok
return false;
}
if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
// I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
point->x = PyInt_AsLong(o1);
point->y = PyInt_AsLong(o2);
return true;
}
return false;
}
wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
// Putting all of the declarations here allows
// us to put the error handling all in one place.
int x;
wxPoint* temp;
PyObject *o, *o1, *o2;
bool isFast = PyList_Check(source) || PyTuple_Check(source);
if (!PySequence_Check(source)) {
goto error0;
}
// The length of the sequence is returned in count.
*count = PySequence_Length(source);
if (*count < 0) {
goto error0;
}
temp = new wxPoint[*count];
if (!temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (x=0; x<*count; x++) {
// Get an item: try fast way first.
if (isFast) {
o = PySequence_Fast_GET_ITEM(source, x);
}
else {
o = PySequence_GetItem(source, x);
if (o == NULL) {
goto error1;
}
}
// Convert o to wxPoint.
if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
(PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
o1 = PySequence_Fast_GET_ITEM(o, 0);
o2 = PySequence_Fast_GET_ITEM(o, 1);
if (!wxPointFromObjects(o1, o2, &temp[x])) {
goto error2;
}
}
else if (PyInstance_Check(o)) {
wxPoint* pt;
if (SWIG_GetPtrObj(o, (void **)&pt, "_wxPoint_p")) {
goto error2;
}
temp[x] = *pt;
}
else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
o1 = PySequence_GetItem(o, 0);
o2 = PySequence_GetItem(o, 1);
if (!wxPointFromObjects(o1, o2, &temp[x])) {
goto error3;
}
Py_DECREF(o1);
Py_DECREF(o2);
}
else {
goto error2;
}
// Clean up.
if (!isFast)
Py_DECREF(o);
}
return temp;
error3:
Py_DECREF(o1);
Py_DECREF(o2);
error2:
if (!isFast)
Py_DECREF(o);
error1:
delete temp;
error0:
PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
return NULL;
}
// end of patch
//------------------------------
wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
wxBitmap** temp = new wxBitmap*[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (PyInstance_Check(o)) {
wxBitmap* pt;
if (SWIG_GetPtrObj(o, (void **) &pt,"_wxBitmap_p")) {
PyErr_SetString(PyExc_TypeError,"Expected _wxBitmap_p.");
return NULL;
}
temp[x] = pt;
}
else {
PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
return NULL;
}
}
return temp;
}
wxString* wxString_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
wxString* temp = new wxString[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
#if PYTHON_API_VERSION >= 1009
if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
return NULL;
}
char* buff;
int length;
if (PyString_AsStringAndSize(o, &buff, &length) == -1)
return NULL;
temp[x] = wxString(buff, length);
#else
if (! PyString_Check(o)) {
PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
return NULL;
}
temp[x] = PyString_AsString(o);
#endif
}
return temp;
}
wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
if (! temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (PyInstance_Check(o)) {
wxAcceleratorEntry* ae;
if (SWIG_GetPtrObj(o, (void **) &ae,"_wxAcceleratorEntry_p")) {
PyErr_SetString(PyExc_TypeError,"Expected _wxAcceleratorEntry_p.");
return NULL;
}
temp[x] = *ae;
}
else if (PyTuple_Check(o)) {
PyObject* o1 = PyTuple_GetItem(o, 0);
PyObject* o2 = PyTuple_GetItem(o, 1);
PyObject* o3 = PyTuple_GetItem(o, 2);
temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
}
else {
PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
return NULL;
}
}
return temp;
}
wxPen** wxPen_LIST_helper(PyObject* source) {
if (!PyList_Check(source)) {
PyErr_SetString(PyExc_TypeError, "Expected a list object.");
return NULL;
}
int count = PyList_Size(source);
wxPen** temp = new wxPen*[count];
if (!temp) {
PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
return NULL;
}
for (int x=0; x<count; x++) {
PyObject* o = PyList_GetItem(source, x);
if (PyInstance_Check(o)) {
wxPen* pt;
if (SWIG_GetPtrObj(o, (void **) &pt,"_wxPen_p")) {
delete temp;
PyErr_SetString(PyExc_TypeError,"Expected _wxPen_p.");
return NULL;
}
temp[x] = pt;
}
else {
delete temp;
PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
return NULL;
}
}
return temp;
}
bool _2int_seq_helper(PyObject* source, int* i1, int* i2) {
bool isFast = PyList_Check(source) || PyTuple_Check(source);
PyObject *o1, *o2;
if (!PySequence_Check(source) || PySequence_Length(source) != 2)
return FALSE;
if (isFast) {
o1 = PySequence_Fast_GET_ITEM(source, 0);
o2 = PySequence_Fast_GET_ITEM(source, 1);
}
else {
o1 = PySequence_GetItem(source, 0);
o2 = PySequence_GetItem(source, 1);
}
*i1 = PyInt_AsLong(o1);
*i2 = PyInt_AsLong(o2);
if (! isFast) {
Py_DECREF(o1);
Py_DECREF(o2);
}
return TRUE;
}
bool _4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
bool isFast = PyList_Check(source) || PyTuple_Check(source);
PyObject *o1, *o2, *o3, *o4;
if (!PySequence_Check(source) || PySequence_Length(source) != 4)
return FALSE;
if (isFast) {
o1 = PySequence_Fast_GET_ITEM(source, 0);
o2 = PySequence_Fast_GET_ITEM(source, 1);
o3 = PySequence_Fast_GET_ITEM(source, 2);
o4 = PySequence_Fast_GET_ITEM(source, 3);
}
else {
o1 = PySequence_GetItem(source, 0);
o2 = PySequence_GetItem(source, 1);
o3 = PySequence_GetItem(source, 2);
o4 = PySequence_GetItem(source, 3);
}
*i1 = PyInt_AsLong(o1);
*i2 = PyInt_AsLong(o2);
*i3 = PyInt_AsLong(o3);
*i4 = PyInt_AsLong(o4);
if (! isFast) {
Py_DECREF(o1);
Py_DECREF(o2);
Py_DECREF(o3);
Py_DECREF(o4);
}
return TRUE;
}
//----------------------------------------------------------------------
bool wxSize_helper(PyObject* source, wxSize** obj) {
// If source is an object instance then it may already be the right type
if (PyInstance_Check(source)) {
wxSize* ptr;
if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxSize_p"))
goto error;
*obj = ptr;
return TRUE;
}
// otherwise a 2-tuple of integers is expected
else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
PyObject* o1 = PySequence_GetItem(source, 0);
PyObject* o2 = PySequence_GetItem(source, 1);
**obj = wxSize(PyInt_AsLong(o1), PyInt_AsLong(o2));
return TRUE;
}
error:
PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of integers or a wxSize object.");
return FALSE;
}
bool wxPoint_helper(PyObject* source, wxPoint** obj) {
// If source is an object instance then it may already be the right type
if (PyInstance_Check(source)) {
wxPoint* ptr;
if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxPoint_p"))
goto error;
*obj = ptr;
return TRUE;
}
// otherwise a length-2 sequence of integers is expected
if (PySequence_Check(source) && PySequence_Length(source) == 2) {
PyObject* o1 = PySequence_GetItem(source, 0);
PyObject* o2 = PySequence_GetItem(source, 1);
// This should really check for integers, not numbers -- but that would break code.
if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
Py_DECREF(o1);
Py_DECREF(o2);
goto error;
}
**obj = wxPoint(PyInt_AsLong(o1), PyInt_AsLong(o2));
Py_DECREF(o1);
Py_DECREF(o2);
return TRUE;
}
error:
PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of integers or a wxPoint object.");
return FALSE;
}
bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
// If source is an object instance then it may already be the right type
if (PyInstance_Check(source)) {
wxRealPoint* ptr;
if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxRealPoint_p"))
goto error;
*obj = ptr;
return TRUE;
}
// otherwise a 2-tuple of floats is expected
else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
PyObject* o1 = PySequence_GetItem(source, 0);
PyObject* o2 = PySequence_GetItem(source, 1);
**obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
return TRUE;
}
error:
PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
return FALSE;
}
bool wxRect_helper(PyObject* source, wxRect** obj) {
// If source is an object instance then it may already be the right type
if (PyInstance_Check(source)) {
wxRect* ptr;
if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxRect_p"))
goto error;
*obj = ptr;
return TRUE;
}
// otherwise a 4-tuple of integers is expected
else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
PyObject* o1 = PySequence_GetItem(source, 0);
PyObject* o2 = PySequence_GetItem(source, 1);
PyObject* o3 = PySequence_GetItem(source, 2);
PyObject* o4 = PySequence_GetItem(source, 3);
**obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
PyInt_AsLong(o3), PyInt_AsLong(o4));
return TRUE;
}
error:
PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
return FALSE;
}
bool wxColour_helper(PyObject* source, wxColour** obj) {
// If source is an object instance then it may already be the right type
if (PyInstance_Check(source)) {
wxColour* ptr;
if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxColour_p"))
goto error;
*obj = ptr;
return TRUE;
}
// otherwise a string is expected
else if (PyString_Check(source)) {
wxString spec = PyString_AS_STRING(source);
if (spec[0U] == '#' && spec.Length() == 7) { // It's #RRGGBB
char* junk;
int red = strtol(spec.Mid(1,2), &junk, 16);
int green = strtol(spec.Mid(3,2), &junk, 16);
int blue = strtol(spec.Mid(5,2), &junk, 16);
**obj = wxColour(red, green, blue);
return TRUE;
}
else { // it's a colour name
**obj = wxColour(spec);
return TRUE;
}
}
error:
PyErr_SetString(PyExc_TypeError, "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
return FALSE;
}
//----------------------------------------------------------------------
PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
PyObject* list = PyList_New(0);
for (size_t i=0; i < arr.GetCount(); i++) {
PyObject* str = PyString_FromString(arr[i].c_str());
PyList_Append(list, str);
Py_DECREF(str);
}
return list;
}
//----------------------------------------------------------------------
//----------------------------------------------------------------------
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