wxPython/src/helpers.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpers.cpp
   3 // Purpose:     Helper functions/classes for the wxPython extension module
   4 //
   5 // Author:      Robin Dunn
   6 //
   7 // Created:     7/1/97
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #include <stdio.h>  // get the correct definition of NULL
  14
  15 #undef DEBUG
  16 #include <Python.h>
  17 #include "helpers.h"
  18
  19 #ifdef __WXMSW__
  20 #include <wx/msw/private.h>
  21 #undef FindWindow
  22 #undef GetCharWidth
  23 #undef LoadAccelerators
  24 #undef GetClassInfo
  25 #undef GetClassName
  26 #endif
  27
  28 #ifdef __WXGTK__
  29 #include <gtk/gtk.h>
  30 #include <gdk/gdkprivate.h>
  31 #include <wx/gtk/win_gtk.h>
  32 #endif
  33
  34
  35
  36
  37 #ifdef __WXMSW__             // If building for win32...
  38 //----------------------------------------------------------------------
  39 // This gets run when the DLL is loaded.  We just need to save a handle.
  40 //----------------------------------------------------------------------
  41
  42 BOOL WINAPI DllMain(
  43     HINSTANCE   hinstDLL,    // handle to DLL module
  44     DWORD       fdwReason,   // reason for calling function
  45     LPVOID      lpvReserved  // reserved
  46    )
  47 {
  48     wxSetInstance(hinstDLL);
  49     return 1;
  50 }
  51 #endif
  52
  53 //----------------------------------------------------------------------
  54 // Class for implementing the wxp main application shell.
  55 //----------------------------------------------------------------------
  56
  57 wxPyApp *wxPythonApp = NULL;            // Global instance of application object
  58
  59
  60 wxPyApp::wxPyApp() {
  61 //    printf("**** ctor\n");
  62 }
  63
  64 wxPyApp::~wxPyApp() {
  65 //    printf("**** dtor\n");
  66 }
  67
  68
  69 // This one isn't acutally called...  See __wxStart()
  70 bool wxPyApp::OnInit(void) {
  71     return FALSE;
  72 }
  73
  74 int  wxPyApp::MainLoop(void) {
  75     int retval = 0;
  76
  77     DeletePendingObjects();
  78 #ifdef __WXGTK__
  79     m_initialized = wxTopLevelWindows.GetCount() != 0;
  80 #endif
  81
  82     if (Initialized()) {
  83         retval = wxApp::MainLoop();
  84         wxPythonApp->OnExit();
  85     }
  86     return retval;
  87 }
  88
  89
  90 //---------------------------------------------------------------------
  91 //----------------------------------------------------------------------
  92
  93 #ifdef __WXMSW__
  94 #include "wx/msw/msvcrt.h"
  95 #endif
  96
  97
  98 int  WXDLLEXPORT wxEntryStart( int argc, char** argv );
  99 int  WXDLLEXPORT wxEntryInitGui();
 100 void WXDLLEXPORT wxEntryCleanup();
 101
 102
 103 #ifdef WXP_WITH_THREAD
 104 PyThreadState*  wxPyEventThreadState = NULL;
 105 #endif
 106
 107
 108 // This is where we pick up the first part of the wxEntry functionality...
 109 // The rest is in __wxStart and  __wxCleanup.  This function is called when
 110 // wxcmodule is imported.  (Before there is a wxApp object.)
 111 void __wxPreStart()
 112 {
 113
 114 #ifdef __WXMSW__
 115 //    wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 116 #endif
 117
 118 #ifdef WXP_WITH_THREAD
 119     PyEval_InitThreads();
 120     wxPyEventThreadState = PyThreadState_Get(); // PyThreadState_New(PyThreadState_Get()->interp);
 121 #endif
 122
 123     // Bail out if there is already windows created.  This means that the
 124     // toolkit has already been initialized, as in embedding wxPython in
 125     // a C++ wxWindows app.
 126     if (wxTopLevelWindows.Number() > 0)
 127         return;
 128
 129
 130     int argc = 0;
 131     char** argv = NULL;
 132     PyObject* sysargv = PySys_GetObject("argv");
 133     if (sysargv != NULL) {
 134         argc = PyList_Size(sysargv);
 135         argv = new char*[argc+1];
 136         int x;
 137         for(x=0; x<argc; x++)
 138             argv[x] = copystring(PyString_AsString(PyList_GetItem(sysargv, x)));
 139         argv[argc] = NULL;
 140     }
 141
 142     wxEntryStart(argc, argv);
 143     delete [] argv;
 144 }
 145
 146
 147
 148 // Start the user application, user App's OnInit method is a parameter here
 149 PyObject* __wxStart(PyObject* /* self */, PyObject* args)
 150 {
 151     PyObject*   onInitFunc = NULL;
 152     PyObject*   arglist;
 153     PyObject*   result;
 154     long        bResult;
 155
 156     if (!PyArg_ParseTuple(args, "O", &onInitFunc))
 157         return NULL;
 158
 159 #if 0  // Try it out without this check, see how it does...
 160     if (wxTopLevelWindows.Number() > 0) {
 161         PyErr_SetString(PyExc_TypeError, "Only 1 wxApp per process!");
 162         return NULL;
 163     }
 164 #endif
 165
 166     // This is the next part of the wxEntry functionality...
 167     int argc = 0;
 168     char** argv = NULL;
 169     PyObject* sysargv = PySys_GetObject("argv");
 170     if (sysargv != NULL) {
 171         argc = PyList_Size(sysargv);
 172         argv = new char*[argc+1];
 173         int x;
 174         for(x=0; x<argc; x++)
 175             argv[x] = copystring(PyString_AsString(PyList_GetItem(sysargv, x)));
 176         argv[argc] = NULL;
 177     }
 178     wxPythonApp->argc = argc;
 179     wxPythonApp->argv = argv;
 180
 181     wxEntryInitGui();
 182
 183     // Call the Python App's OnInit function
 184     arglist = PyTuple_New(0);
 185     result = PyEval_CallObject(onInitFunc, arglist);
 186     if (!result) {      // an exception was raised.
 187         return NULL;
 188     }
 189
 190     if (! PyInt_Check(result)) {
 191         PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 192         return NULL;
 193     }
 194     bResult = PyInt_AS_LONG(result);
 195     if (! bResult) {
 196         PyErr_SetString(PyExc_SystemExit, "OnInit returned FALSE, exiting...");
 197         return NULL;
 198     }
 199
 200 #ifdef __WXGTK__
 201     wxTheApp->m_initialized = (wxTopLevelWindows.GetCount() > 0);
 202 #endif
 203
 204     Py_INCREF(Py_None);
 205     return Py_None;
 206 }
 207
 208 void __wxCleanup() {
 209     wxEntryCleanup();
 210 }
 211
 212
 213
 214 static PyObject* wxPython_dict = NULL;
 215 static PyObject* wxPyPtrTypeMap = NULL;
 216
 217 PyObject* __wxSetDictionary(PyObject* /* self */, PyObject* args)
 218 {
 219
 220     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 221         return NULL;
 222
 223     if (!PyDict_Check(wxPython_dict)) {
 224         PyErr_SetString(PyExc_TypeError, "_wxSetDictionary must have dictionary object!");
 225         return NULL;
 226     }
 227
 228     if (! wxPyPtrTypeMap)
 229         wxPyPtrTypeMap = PyDict_New();
 230     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 231
 232
 233 #ifdef __WXMOTIF__
 234 #define wxPlatform "__WXMOTIF__"
 235 #endif
 236 #ifdef __WXQT__
 237 #define wxPlatform "__WXQT__"
 238 #endif
 239 #ifdef __WXGTK__
 240 #define wxPlatform "__WXGTK__"
 241 #endif
 242 #if defined(__WIN32__) || defined(__WXMSW__)
 243 #define wxPlatform "__WXMSW__"
 244 #endif
 245 #ifdef __WXMAC__
 246 #define wxPlatform "__WXMAC__"
 247 #endif
 248
 249     PyDict_SetItemString(wxPython_dict, "wxPlatform", PyString_FromString(wxPlatform));
 250
 251     Py_INCREF(Py_None);
 252     return Py_None;
 253 }
 254
 255
 256 //---------------------------------------------------------------------------
 257 // Stuff used by OOR to find the right wxPython class type to return and to
 258 // build it.
 259
 260
 261 // The pointer type map is used when the "pointer" type name generated by SWIG
 262 // is not the same as the shadow class name, for example wxPyTreeCtrl
 263 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 264 // so we'll just make it a Python dictionary in the wx module's namespace.
 265 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 266     if (! wxPyPtrTypeMap)
 267         wxPyPtrTypeMap = PyDict_New();
 268
 269     PyDict_SetItemString(wxPyPtrTypeMap,
 270                          (char*)commonName,
 271                          PyString_FromString((char*)ptrName));
 272 }
 273
 274
 275
 276 PyObject* wxPyClassExists(const char* className) {
 277
 278     if (!className)
 279         return NULL;
 280
 281     char    buff[64];               // should always be big enough...
 282
 283     sprintf(buff, "%sPtr", className);
 284     PyObject* classobj = PyDict_GetItemString(wxPython_dict, buff);
 285
 286     return classobj;  // returns NULL if not found
 287 }
 288
 289
 290 PyObject*  wxPyMake_wxObject(wxObject* source) {
 291     PyObject* target;
 292
 293     if (source) {
 294         wxClassInfo* info = source->GetClassInfo();
 295         wxChar*      name = (wxChar*)info->GetClassName();
 296         PyObject*    klass = wxPyClassExists(name);
 297         while (info && !klass) {
 298             name = (wxChar*)info->GetBaseClassName1();
 299             info = wxClassInfo::FindClass(name);
 300             klass = wxPyClassExists(name);
 301         }
 302         if (info) {
 303             target = wxPyConstructObject(source, name, klass, FALSE);
 304         } else {
 305             wxString msg("wxPython class not found for ");
 306             msg += source->GetClassInfo()->GetClassName();
 307             PyErr_SetString(PyExc_NameError, msg.c_str());
 308             target = NULL;
 309         }
 310     } else {  // source was NULL so return None.
 311         Py_INCREF(Py_None); target = Py_None;
 312     }
 313     return target;
 314 }
 315
 316 //---------------------------------------------------------------------------
 317
 318 PyObject* wxPyConstructObject(void* ptr,
 319                               const char* className,
 320                               PyObject* klass,
 321                               int setThisOwn) {
 322
 323     PyObject* obj;
 324     PyObject* arg;
 325     PyObject* item;
 326     char      swigptr[64];      // should always be big enough...
 327     char      buff[64];
 328
 329     if ((item = PyDict_GetItemString(wxPyPtrTypeMap, (char*)className)) != NULL) {
 330         className = PyString_AsString(item);
 331     }
 332     sprintf(buff, "_%s_p", className);
 333     SWIG_MakePtr(swigptr, ptr, buff);
 334
 335     arg = Py_BuildValue("(s)", swigptr);
 336     obj = PyInstance_New(klass, arg, NULL);
 337     Py_DECREF(arg);
 338
 339     if (setThisOwn) {
 340         PyObject* one = PyInt_FromLong(1);
 341         PyObject_SetAttrString(obj, "thisown", one);
 342         Py_DECREF(one);
 343     }
 344
 345     return obj;
 346 }
 347
 348
 349 PyObject* wxPyConstructObject(void* ptr,
 350                               const char* className,
 351                               int setThisOwn) {
 352     PyObject* obj;
 353
 354     if (!ptr) {
 355         Py_INCREF(Py_None);
 356         return Py_None;
 357     }
 358
 359     char    buff[64];               // should always be big enough...
 360
 361     sprintf(buff, "%sPtr", className);
 362     PyObject* classobj = PyDict_GetItemString(wxPython_dict, buff);
 363     if (! classobj) {
 364         char temp[128];
 365         sprintf(temp,
 366                 "*** Unknown class name %s, tell Robin about it please ***",
 367                 buff);
 368         obj = PyString_FromString(temp);
 369         return obj;
 370     }
 371
 372     return wxPyConstructObject(ptr, className, classobj, setThisOwn);
 373 }
 374
 375 //---------------------------------------------------------------------------
 376
 377 static PyThreadState* myPyThreadState_Get() {
 378     PyThreadState* current;
 379     current = PyThreadState_Swap(NULL);
 380     PyThreadState_Swap(current);
 381     return current;
 382 }
 383
 384
 385 bool wxPyRestoreThread() {
 386     // NOTE: The Python API docs state that if a thread already has the
 387     // interpreter lock and calls PyEval_RestoreThread again a deadlock
 388     // occurs, so I put in this code as a guard condition since there are
 389     // many possibilites for nested events and callbacks in wxPython.  If
 390     // The current thread is our thread, then we can assume that we
 391     // already have the lock.  (I hope!)
 392     //
 393 #ifdef WXP_WITH_THREAD
 394     if (wxPyEventThreadState != myPyThreadState_Get()) {
 395         PyEval_AcquireThread(wxPyEventThreadState);
 396         return TRUE;
 397     }
 398     else
 399 #endif
 400         return FALSE;
 401 }
 402
 403
 404 void wxPySaveThread(bool doSave) {
 405 #ifdef WXP_WITH_THREAD
 406     if (doSave) {
 407         PyEval_ReleaseThread(wxPyEventThreadState);
 408     }
 409 #endif
 410 }
 411
 412 //---------------------------------------------------------------------------
 413
 414
 415 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
 416
 417 wxPyCallback::wxPyCallback(PyObject* func) {
 418     m_func = func;
 419     Py_INCREF(m_func);
 420 }
 421
 422 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
 423     m_func = other.m_func;
 424     Py_INCREF(m_func);
 425 }
 426
 427 wxPyCallback::~wxPyCallback() {
 428     bool doSave = wxPyRestoreThread();
 429     Py_DECREF(m_func);
 430     wxPySaveThread(doSave);
 431 }
 432
 433
 434
 435 // This function is used for all events destined for Python event handlers.
 436 void wxPyCallback::EventThunker(wxEvent& event) {
 437     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
 438     PyObject*       func = cb->m_func;
 439     PyObject*       result;
 440     PyObject*       arg;
 441     PyObject*       tuple;
 442
 443
 444     bool doSave = wxPyRestoreThread();
 445     wxString className = event.GetClassInfo()->GetClassName();
 446
 447     if (className == "wxPyEvent")
 448         arg = ((wxPyEvent*)&event)->GetSelf();
 449     else if (className == "wxPyCommandEvent")
 450         arg = ((wxPyCommandEvent*)&event)->GetSelf();
 451     else
 452         arg = wxPyConstructObject((void*)&event, className);
 453
 454     tuple = PyTuple_New(1);
 455     PyTuple_SET_ITEM(tuple, 0, arg);
 456     result = PyEval_CallObject(func, tuple);
 457     Py_DECREF(tuple);
 458     if (result) {
 459         Py_DECREF(result);
 460         PyErr_Clear();       // Just in case...
 461     } else {
 462         PyErr_Print();
 463     }
 464     wxPySaveThread(doSave);
 465 }
 466
 467
 468 //----------------------------------------------------------------------
 469
 470 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
 471       m_lastFound = NULL;
 472       m_self = other.m_self;
 473       m_class = other.m_class;
 474       if (m_self) {
 475           Py_INCREF(m_self);
 476           Py_INCREF(m_class);
 477       }
 478 }
 479
 480
 481 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
 482     m_self = self;
 483     m_class = klass;
 484     m_incRef = incref;
 485     if (incref) {
 486         Py_INCREF(m_self);
 487         Py_INCREF(m_class);
 488     }
 489 }
 490
 491
 492 // If the object (m_self) has an attibute of the given name, and if that
 493 // attribute is a method, and if that method's class is not from a base class,
 494 // then we'll save a pointer to the method so callCallback can call it.
 495 bool wxPyCallbackHelper::findCallback(const char* name) const {
 496     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
 497     self->m_lastFound = NULL;
 498     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
 499         PyObject* method;
 500         method = PyObject_GetAttrString(m_self, (char*)name);
 501
 502         if (PyMethod_Check(method) &&
 503             ((PyMethod_GET_CLASS(method) == m_class) ||
 504              PyClass_IsSubclass(PyMethod_GET_CLASS(method), m_class))) {
 505
 506             self->m_lastFound = method;
 507         }
 508         else {
 509             Py_DECREF(method);
 510         }
 511     }
 512     return m_lastFound != NULL;
 513 }
 514
 515
 516 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
 517     PyObject*   result;
 518     int         retval = FALSE;
 519
 520     result = callCallbackObj(argTuple);
 521     if (result) {                       // Assumes an integer return type...
 522         retval = PyInt_AsLong(result);
 523         Py_DECREF(result);
 524         PyErr_Clear();                  // forget about it if it's not...
 525     }
 526     return retval;
 527 }
 528
 529 // Invoke the Python callable object, returning the raw PyObject return
 530 // value.  Caller should DECREF the return value and also call PyEval_SaveThread.
 531 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
 532     PyObject* result;
 533
 534     // Save a copy of the pointer in case the callback generates another
 535     // callback.  In that case m_lastFound will have a different value when
 536     // it gets back here...
 537     PyObject* method = m_lastFound;
 538
 539     result = PyEval_CallObject(method, argTuple);
 540     Py_DECREF(argTuple);
 541     Py_DECREF(method);
 542     if (!result) {
 543         PyErr_Print();
 544     }
 545     return result;
 546 }
 547
 548
 549 void wxPyCBH_setSelf(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
 550     cbh.setSelf(self, klass, incref);
 551 }
 552
 553 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
 554     return cbh.findCallback(name);
 555 }
 556
 557 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
 558     return cbh.callCallback(argTuple);
 559 }
 560
 561 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
 562     return cbh.callCallbackObj(argTuple);
 563 }
 564
 565
 566 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
 567     bool doSave = wxPyRestoreThread();
 568     if (cbh->m_incRef) {
 569         Py_XDECREF(cbh->m_self);
 570         Py_XDECREF(cbh->m_class);
 571     }
 572     wxPySaveThread(doSave);
 573 }
 574
 575 //---------------------------------------------------------------------------
 576 //---------------------------------------------------------------------------
 577 // These classes can be derived from in Python and passed through the event
 578 // system without losing anything.  They do this by keeping a reference to
 579 // themselves and some special case handling in wxPyCallback::EventThunker.
 580
 581
 582 wxPyEvtSelfRef::wxPyEvtSelfRef() {
 583     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
 584     //Py_INCREF(m_self);        //      circular loops...
 585     m_cloned = FALSE;
 586 }
 587
 588 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
 589     bool doSave = wxPyRestoreThread();
 590     if (m_cloned)
 591         Py_DECREF(m_self);
 592     wxPySaveThread(doSave);
 593 }
 594
 595 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
 596     bool doSave = wxPyRestoreThread();
 597     if (m_cloned)
 598         Py_DECREF(m_self);
 599     m_self = self;
 600     if (clone) {
 601         Py_INCREF(m_self);
 602         m_cloned = TRUE;
 603     }
 604     wxPySaveThread(doSave);
 605 }
 606
 607 PyObject* wxPyEvtSelfRef::GetSelf() const {
 608     Py_INCREF(m_self);
 609     return m_self;
 610 }
 611
 612
 613 wxPyEvent::wxPyEvent(int id)
 614     : wxEvent(id) {
 615 }
 616
 617 wxPyEvent::~wxPyEvent() {
 618 }
 619
 620 // This one is so the event object can be Cloned...
 621 void wxPyEvent::CopyObject(wxObject& dest) const {
 622     wxEvent::CopyObject(dest);
 623     ((wxPyEvent*)&dest)->SetSelf(m_self, TRUE);
 624 }
 625
 626
 627 IMPLEMENT_DYNAMIC_CLASS(wxPyEvent, wxEvent);
 628
 629
 630 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
 631     : wxCommandEvent(commandType, id) {
 632 }
 633
 634 wxPyCommandEvent::~wxPyCommandEvent() {
 635 }
 636
 637 void wxPyCommandEvent::CopyObject(wxObject& dest) const {
 638     wxCommandEvent::CopyObject(dest);
 639     ((wxPyCommandEvent*)&dest)->SetSelf(m_self, TRUE);
 640 }
 641
 642
 643 IMPLEMENT_DYNAMIC_CLASS(wxPyCommandEvent, wxCommandEvent);
 644
 645
 646
 647 //---------------------------------------------------------------------------
 648 //---------------------------------------------------------------------------
 649
 650
 651 wxPyTimer::wxPyTimer(PyObject* callback) {
 652     func = callback;
 653     Py_INCREF(func);
 654 }
 655
 656 wxPyTimer::~wxPyTimer() {
 657     bool doSave = wxPyRestoreThread();
 658     Py_DECREF(func);
 659     wxPySaveThread(doSave);
 660 }
 661
 662 void wxPyTimer::Notify() {
 663     if (!func || func == Py_None) {
 664         wxTimer::Notify();
 665     }
 666     else {
 667         bool doSave = wxPyRestoreThread();
 668
 669         PyObject*   result;
 670         PyObject*   args = Py_BuildValue("()");
 671
 672         result = PyEval_CallObject(func, args);
 673         Py_DECREF(args);
 674         if (result) {
 675             Py_DECREF(result);
 676             PyErr_Clear();
 677         } else {
 678             PyErr_Print();
 679         }
 680
 681         wxPySaveThread(doSave);
 682     }
 683 }
 684
 685
 686
 687 //---------------------------------------------------------------------------
 688 //---------------------------------------------------------------------------
 689 // Convert a wxList to a Python List
 690
 691 PyObject* wxPy_ConvertList(wxListBase* list, const char* className) {
 692     PyObject*   pyList;
 693     PyObject*   pyObj;
 694     wxObject*   wxObj;
 695     wxNode*     node = list->First();
 696
 697     bool doSave = wxPyRestoreThread();
 698     pyList = PyList_New(0);
 699     while (node) {
 700         wxObj = node->Data();
 701         pyObj = wxPyMake_wxObject(wxObj); //wxPyConstructObject(wxObj, className);
 702         PyList_Append(pyList, pyObj);
 703         node = node->Next();
 704     }
 705     wxPySaveThread(doSave);
 706     return pyList;
 707 }
 708
 709 //----------------------------------------------------------------------
 710
 711 long wxPyGetWinHandle(wxWindow* win) {
 712 #ifdef __WXMSW__
 713     return (long)win->GetHandle();
 714 #endif
 715
 716     // Find and return the actual X-Window.
 717 #ifdef __WXGTK__
 718     if (win->m_wxwindow) {
 719         GdkWindowPrivate* bwin = (GdkWindowPrivate*)GTK_PIZZA(win->m_wxwindow)->bin_window;
 720         if (bwin) {
 721             return (long)bwin->xwindow;
 722         }
 723     }
 724 #endif
 725     return 0;
 726 }
 727
 728 //----------------------------------------------------------------------
 729 // Some helper functions for typemaps in my_typemaps.i, so they won't be
 730 // included in every file...
 731
 732
 733 byte* byte_LIST_helper(PyObject* source) {
 734     if (!PyList_Check(source)) {
 735         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 736         return NULL;
 737     }
 738     int count = PyList_Size(source);
 739     byte* temp = new byte[count];
 740     if (! temp) {
 741         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 742         return NULL;
 743     }
 744     for (int x=0; x<count; x++) {
 745         PyObject* o = PyList_GetItem(source, x);
 746         if (! PyInt_Check(o)) {
 747             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
 748             return NULL;
 749         }
 750         temp[x] = (byte)PyInt_AsLong(o);
 751     }
 752     return temp;
 753 }
 754
 755
 756 int* int_LIST_helper(PyObject* source) {
 757     if (!PyList_Check(source)) {
 758         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 759         return NULL;
 760     }
 761     int count = PyList_Size(source);
 762     int* temp = new int[count];
 763     if (! temp) {
 764         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 765         return NULL;
 766     }
 767     for (int x=0; x<count; x++) {
 768         PyObject* o = PyList_GetItem(source, x);
 769         if (! PyInt_Check(o)) {
 770             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
 771             return NULL;
 772         }
 773         temp[x] = PyInt_AsLong(o);
 774     }
 775     return temp;
 776 }
 777
 778
 779 long* long_LIST_helper(PyObject* source) {
 780     if (!PyList_Check(source)) {
 781         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 782         return NULL;
 783     }
 784     int count = PyList_Size(source);
 785     long* temp = new long[count];
 786     if (! temp) {
 787         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 788         return NULL;
 789     }
 790     for (int x=0; x<count; x++) {
 791         PyObject* o = PyList_GetItem(source, x);
 792         if (! PyInt_Check(o)) {
 793             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
 794             return NULL;
 795         }
 796         temp[x] = PyInt_AsLong(o);
 797     }
 798     return temp;
 799 }
 800
 801
 802 char** string_LIST_helper(PyObject* source) {
 803     if (!PyList_Check(source)) {
 804         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 805         return NULL;
 806     }
 807     int count = PyList_Size(source);
 808     char** temp = new char*[count];
 809     if (! temp) {
 810         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 811         return NULL;
 812     }
 813     for (int x=0; x<count; x++) {
 814         PyObject* o = PyList_GetItem(source, x);
 815         if (! PyString_Check(o)) {
 816             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
 817             return NULL;
 818         }
 819         temp[x] = PyString_AsString(o);
 820     }
 821     return temp;
 822 }
 823
 824 //--------------------------------
 825 // Part of patch from Tim Hochberg
 826 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
 827     if (PyInt_Check(o1) && PyInt_Check(o2)) {
 828         point->x = PyInt_AS_LONG(o1);
 829         point->y = PyInt_AS_LONG(o2);
 830         return true;
 831     }
 832     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
 833         point->x = (int)PyFloat_AS_DOUBLE(o1);
 834         point->y = (int)PyFloat_AS_DOUBLE(o2);
 835         return true;
 836     }
 837     if (PyInstance_Check(o1) || PyInstance_Check(o2)) {
 838         // Disallow instances because they can cause havok
 839         return false;
 840     }
 841     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
 842         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
 843         point->x = PyInt_AsLong(o1);
 844         point->y = PyInt_AsLong(o2);
 845         return true;
 846     }
 847     return false;
 848 }
 849
 850
 851 #if PYTHON_API_VERSION < 1009
 852 #define PySequence_Fast_GET_ITEM(o, i)\
 853      (PyList_Check(o) ? PyList_GET_ITEM(o, i) : PyTuple_GET_ITEM(o, i))
 854 #endif
 855
 856 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
 857     // Putting all of the declarations here allows
 858     // us to put the error handling all in one place.
 859     int x;
 860     wxPoint* temp;
 861     PyObject *o, *o1, *o2;
 862     int isFast = PyList_Check(source) || PyTuple_Check(source);
 863
 864     // The length of the sequence is returned in count.
 865     if (!PySequence_Check(source)) {
 866         goto error0;
 867     }
 868     *count = PySequence_Length(source);
 869     if (*count < 0) {
 870         goto error0;
 871     }
 872
 873     temp = new wxPoint[*count];
 874     if (!temp) {
 875         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 876         return NULL;
 877     }
 878     for (x=0; x<*count; x++) {
 879         // Get an item: try fast way first.
 880         if (isFast) {
 881             o = PySequence_Fast_GET_ITEM(source, x);
 882         }
 883         else {
 884             o = PySequence_GetItem(source, x);
 885             if (o == NULL) {
 886                 goto error1;
 887             }
 888         }
 889
 890         // Convert o to wxPoint.
 891         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
 892             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
 893             o1 = PySequence_Fast_GET_ITEM(o, 0);
 894             o2 = PySequence_Fast_GET_ITEM(o, 1);
 895             if (!wxPointFromObjects(o1, o2, &temp[x])) {
 896                 goto error2;
 897             }
 898         }
 899         else if (PyInstance_Check(o)) {
 900             wxPoint* pt;
 901             if (SWIG_GetPtrObj(o, (void **)&pt, "_wxPoint_p")) {
 902                 goto error2;
 903             }
 904             temp[x] = *pt;
 905         }
 906         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
 907             o1 = PySequence_GetItem(o, 0);
 908             o2 = PySequence_GetItem(o, 1);
 909             if (!wxPointFromObjects(o1, o2, &temp[x])) {
 910                 goto error3;
 911             }
 912             Py_DECREF(o1);
 913             Py_DECREF(o2);
 914         }
 915         else {
 916             goto error2;
 917         }
 918         // Clean up.
 919         if (!isFast)
 920             Py_DECREF(o);
 921     }
 922     return temp;
 923
 924 error3:
 925     Py_DECREF(o1);
 926     Py_DECREF(o2);
 927 error2:
 928     if (!isFast)
 929         Py_DECREF(o);
 930 error1:
 931     delete temp;
 932 error0:
 933     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
 934     return NULL;
 935 }
 936 // end of patch
 937 //------------------------------
 938
 939
 940 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
 941     if (!PyList_Check(source)) {
 942         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 943         return NULL;
 944     }
 945     int count = PyList_Size(source);
 946     wxBitmap** temp = new wxBitmap*[count];
 947     if (! temp) {
 948         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 949         return NULL;
 950     }
 951     for (int x=0; x<count; x++) {
 952         PyObject* o = PyList_GetItem(source, x);
 953         if (PyInstance_Check(o)) {
 954             wxBitmap*    pt;
 955             if (SWIG_GetPtrObj(o, (void **) &pt,"_wxBitmap_p")) {
 956                 PyErr_SetString(PyExc_TypeError,"Expected _wxBitmap_p.");
 957                 return NULL;
 958             }
 959             temp[x] = pt;
 960         }
 961         else {
 962             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
 963             return NULL;
 964         }
 965     }
 966     return temp;
 967 }
 968
 969
 970
 971 wxString* wxString_LIST_helper(PyObject* source) {
 972     if (!PyList_Check(source)) {
 973         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 974         return NULL;
 975     }
 976     int count = PyList_Size(source);
 977     wxString* temp = new wxString[count];
 978     if (! temp) {
 979         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
 980         return NULL;
 981     }
 982     for (int x=0; x<count; x++) {
 983         PyObject* o = PyList_GetItem(source, x);
 984         if (! PyString_Check(o)) {
 985             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
 986             return NULL;
 987         }
 988         temp[x] = PyString_AsString(o);
 989     }
 990     return temp;
 991 }
 992
 993
 994 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
 995     if (!PyList_Check(source)) {
 996         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
 997         return NULL;
 998     }
 999     int count                = PyList_Size(source);
1000     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
1001     if (! temp) {
1002         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1003         return NULL;
1004     }
1005     for (int x=0; x<count; x++) {
1006         PyObject* o = PyList_GetItem(source, x);
1007         if (PyInstance_Check(o)) {
1008             wxAcceleratorEntry* ae;
1009             if (SWIG_GetPtrObj(o, (void **) &ae,"_wxAcceleratorEntry_p")) {
1010                 PyErr_SetString(PyExc_TypeError,"Expected _wxAcceleratorEntry_p.");
1011                 return NULL;
1012             }
1013             temp[x] = *ae;
1014         }
1015         else if (PyTuple_Check(o)) {
1016             PyObject* o1 = PyTuple_GetItem(o, 0);
1017             PyObject* o2 = PyTuple_GetItem(o, 1);
1018             PyObject* o3 = PyTuple_GetItem(o, 2);
1019             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
1020         }
1021         else {
1022             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
1023             return NULL;
1024         }
1025     }
1026     return temp;
1027 }
1028
1029
1030
1031 //----------------------------------------------------------------------
1032
1033 bool wxSize_helper(PyObject* source, wxSize** obj) {
1034
1035     // If source is an object instance then it may already be the right type
1036     if (PyInstance_Check(source)) {
1037         wxSize* ptr;
1038         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxSize_p"))
1039             goto error;
1040         *obj = ptr;
1041         return TRUE;
1042     }
1043     // otherwise a 2-tuple of integers is expected
1044     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
1045         PyObject* o1 = PySequence_GetItem(source, 0);
1046         PyObject* o2 = PySequence_GetItem(source, 1);
1047         **obj = wxSize(PyInt_AsLong(o1), PyInt_AsLong(o2));
1048         return TRUE;
1049     }
1050
1051  error:
1052     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of integers or a wxSize object.");
1053     return FALSE;
1054 }
1055
1056 bool wxPoint_helper(PyObject* source, wxPoint** obj) {
1057
1058     // If source is an object instance then it may already be the right type
1059     if (PyInstance_Check(source)) {
1060         wxPoint* ptr;
1061         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxPoint_p"))
1062             goto error;
1063         *obj = ptr;
1064         return TRUE;
1065     }
1066     // otherwise a length-2 sequence of integers is expected
1067     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
1068         PyObject* o1 = PySequence_GetItem(source, 0);
1069         PyObject* o2 = PySequence_GetItem(source, 1);
1070                 // This should really check for integers, not numbers -- but that would break code.
1071                 if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
1072                         Py_DECREF(o1);
1073                     Py_DECREF(o2);
1074                         goto error;
1075                 }
1076                 **obj = wxPoint(PyInt_AsLong(o1), PyInt_AsLong(o2));
1077                 Py_DECREF(o1);
1078                 Py_DECREF(o2);
1079         return TRUE;
1080     }
1081  error:
1082     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of integers or a wxPoint object.");
1083     return FALSE;
1084 }
1085
1086
1087
1088 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
1089
1090     // If source is an object instance then it may already be the right type
1091     if (PyInstance_Check(source)) {
1092         wxRealPoint* ptr;
1093         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxRealPoint_p"))
1094             goto error;
1095         *obj = ptr;
1096         return TRUE;
1097     }
1098     // otherwise a 2-tuple of floats is expected
1099     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
1100         PyObject* o1 = PySequence_GetItem(source, 0);
1101         PyObject* o2 = PySequence_GetItem(source, 1);
1102         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
1103         return TRUE;
1104     }
1105
1106  error:
1107     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
1108     return FALSE;
1109 }
1110
1111
1112
1113
1114 bool wxRect_helper(PyObject* source, wxRect** obj) {
1115
1116     // If source is an object instance then it may already be the right type
1117     if (PyInstance_Check(source)) {
1118         wxRect* ptr;
1119         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxRect_p"))
1120             goto error;
1121         *obj = ptr;
1122         return TRUE;
1123     }
1124     // otherwise a 4-tuple of integers is expected
1125     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
1126         PyObject* o1 = PySequence_GetItem(source, 0);
1127         PyObject* o2 = PySequence_GetItem(source, 1);
1128         PyObject* o3 = PySequence_GetItem(source, 2);
1129         PyObject* o4 = PySequence_GetItem(source, 3);
1130         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
1131                      PyInt_AsLong(o3), PyInt_AsLong(o4));
1132         return TRUE;
1133     }
1134
1135  error:
1136     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
1137     return FALSE;
1138 }
1139
1140
1141
1142 bool wxColour_helper(PyObject* source, wxColour** obj) {
1143
1144     // If source is an object instance then it may already be the right type
1145     if (PyInstance_Check(source)) {
1146         wxColour* ptr;
1147         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxColour_p"))
1148             goto error;
1149         *obj = ptr;
1150         return TRUE;
1151     }
1152     // otherwise a string is expected
1153     else if (PyString_Check(source)) {
1154         wxString spec = PyString_AS_STRING(source);
1155         if (spec[0U] == '#' && spec.Length() == 7) {  // It's  #RRGGBB
1156             char* junk;
1157             int red   = strtol(spec.Mid(1,2), &junk, 16);
1158             int green = strtol(spec.Mid(3,2), &junk, 16);
1159             int blue  = strtol(spec.Mid(5,2), &junk, 16);
1160             **obj = wxColour(red, green, blue);
1161             return TRUE;
1162         }
1163         else {                                       // it's a colour name
1164             **obj = wxColour(spec);
1165             return TRUE;
1166         }
1167     }
1168
1169  error:
1170     PyErr_SetString(PyExc_TypeError, "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
1171     return FALSE;
1172 }
1173
1174
1175 //----------------------------------------------------------------------
1176 //----------------------------------------------------------------------
1177 //----------------------------------------------------------------------
1178
1179
1180
1181