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:     1-July-1997
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13
  14 #undef DEBUG
  15 #include <Python.h>
  16 #include "wx/wxPython/wxPython_int.h"
  17 #include "wx/wxPython/pyistream.h"
  18
  19 #ifdef __WXMSW__
  20 #include <wx/msw/private.h>
  21 #include <wx/msw/winundef.h>
  22 #include <wx/msw/msvcrt.h>
  23 #endif
  24
  25 #ifdef __WXGTK__
  26 #include <gtk/gtk.h>
  27 #include <gdk/gdkprivate.h>
  28 #include <wx/gtk/win_gtk.h>
  29 #endif
  30
  31 #ifdef __WXMAC__
  32 #include <wx/mac/private.h>
  33 #endif
  34
  35 #include <wx/clipbrd.h>
  36 #include <wx/mimetype.h>
  37 #include <wx/image.h>
  38
  39 //----------------------------------------------------------------------
  40
  41 #if PYTHON_API_VERSION <= 1007 && wxUSE_UNICODE
  42 #error Python must support Unicode to use wxWindows Unicode
  43 #endif
  44
  45 //----------------------------------------------------------------------
  46
  47 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  48 bool wxPyDoCleanup = False;
  49 bool wxPyDoingCleanup = False;
  50
  51
  52 #ifdef WXP_WITH_THREAD
  53 struct wxPyThreadState {
  54     unsigned long  tid;
  55     PyThreadState* tstate;
  56     int            blocked;
  57
  58     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  59         : tid(_tid), tstate(_tstate), blocked(1) {}
  60 };
  61
  62 #include <wx/dynarray.h>
  63 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  64 #include <wx/arrimpl.cpp>
  65 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  66
  67 wxPyThreadStateArray* wxPyTStates = NULL;
  68 wxMutex*              wxPyTMutex = NULL;
  69 #endif
  70
  71
  72 static PyObject* wxPython_dict = NULL;
  73 static PyObject* wxPyAssertionError = NULL;
  74
  75 PyObject* wxPyPtrTypeMap = NULL;
  76
  77
  78 #ifdef __WXMSW__             // If building for win32...
  79 //----------------------------------------------------------------------
  80 // This gets run when the DLL is loaded.  We just need to save a handle.
  81 //----------------------------------------------------------------------
  82
  83 BOOL WINAPI DllMain(
  84     HINSTANCE   hinstDLL,    // handle to DLL module
  85     DWORD       fdwReason,   // reason for calling function
  86     LPVOID      lpvReserved  // reserved
  87    )
  88 {
  89     // If wxPython is embedded in another wxWindows app then
  90     // the inatance has already been set.
  91     if (! wxGetInstance())
  92         wxSetInstance(hinstDLL);
  93     return True;
  94 }
  95 #endif
  96
  97 //----------------------------------------------------------------------
  98 // Classes for implementing the wxp main application shell.
  99 //----------------------------------------------------------------------
 100
 101 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 102
 103
 104 wxPyApp::wxPyApp() {
 105     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 106     m_startupComplete = False;
 107 }
 108
 109
 110 wxPyApp::~wxPyApp() {
 111 }
 112
 113
 114 // This one isn't acutally called...  We fake it with _BootstrapApp
 115 bool wxPyApp::OnInit() {
 116     return False;
 117 }
 118
 119
 120 int  wxPyApp::MainLoop() {
 121     int retval = 0;
 122
 123     DeletePendingObjects();
 124     bool initialized = wxTopLevelWindows.GetCount() != 0;
 125     if (initialized) {
 126         if ( m_exitOnFrameDelete == Later ) {
 127             m_exitOnFrameDelete = Yes;
 128         }
 129
 130         retval = wxApp::MainLoop();
 131         OnExit();
 132     }
 133     return retval;
 134 }
 135
 136
 137 bool wxPyApp::OnInitGui() {
 138     bool rval=True;
 139     wxApp::OnInitGui();  // in this case always call the base class version
 140     wxPyBeginBlockThreads();
 141     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 142         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 143     wxPyEndBlockThreads();
 144     return rval;
 145 }
 146
 147
 148 int wxPyApp::OnExit() {
 149     int rval=0;
 150     wxPyBeginBlockThreads();
 151     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 152         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 153     wxPyEndBlockThreads();
 154     wxApp::OnExit();  // in this case always call the base class version
 155     return rval;
 156 }
 157
 158
 159 #ifdef __WXDEBUG__
 160 void wxPyApp::OnAssert(const wxChar *file,
 161                      int line,
 162                      const wxChar *cond,
 163                      const wxChar *msg) {
 164
 165     // if we're not fully initialized then just log the error
 166     if (! m_startupComplete) {
 167         wxString buf;
 168         buf.Alloc(4096);
 169         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 170                    file, line, cond);
 171         if (msg != NULL) {
 172             buf += wxT(": ");
 173             buf += msg;
 174         }
 175         wxLogDebug(buf);
 176         return;
 177     }
 178
 179     // If the OnAssert is overloaded in the Python class then call it...
 180     bool found;
 181     wxPyBeginBlockThreads();
 182     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 183         PyObject* fso = wx2PyString(file);
 184         PyObject* cso = wx2PyString(file);
 185         PyObject* mso;
 186         if (msg != NULL)
 187             mso = wx2PyString(file);
 188         else {
 189             mso = Py_None; Py_INCREF(Py_None);
 190         }
 191         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 192         Py_DECREF(fso);
 193         Py_DECREF(cso);
 194         Py_DECREF(mso);
 195     }
 196     wxPyEndBlockThreads();
 197
 198     // ...otherwise do our own thing with it
 199     if (! found) {
 200         // ignore it?
 201         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 202             return;
 203
 204         // turn it into a Python exception?
 205         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 206             wxString buf;
 207             buf.Alloc(4096);
 208             buf.Printf(wxT("C++ assertion \"%s\" failed in %s(%d)"), cond, file, line);
 209             if (msg != NULL) {
 210                 buf += wxT(": ");
 211                 buf += msg;
 212             }
 213
 214             // set the exception
 215             wxPyBeginBlockThreads();
 216             PyObject* s = wx2PyString(buf);
 217             PyErr_SetObject(wxPyAssertionError, s);
 218             Py_DECREF(s);
 219             wxPyEndBlockThreads();
 220
 221             // Now when control returns to whatever API wrapper was called from
 222             // Python it should detect that an exception is set and will return
 223             // NULL, signalling the exception to Python.
 224         }
 225
 226         // Send it to the normal log destination, but only if
 227         // not _DIALOG because it will call this too
 228         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 229             wxString buf;
 230             buf.Alloc(4096);
 231             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 232                        file, line, cond);
 233             if (msg != NULL) {
 234                 buf += wxT(": ");
 235                 buf += msg;
 236             }
 237             wxLogDebug(buf);
 238         }
 239
 240         // do the normal wx assert dialog?
 241         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 242             wxApp::OnAssert(file, line, cond, msg);
 243     }
 244 }
 245 #endif
 246
 247     // For catching Apple Events
 248 void wxPyApp::MacOpenFile(const wxString &fileName)
 249 {
 250     wxPyBeginBlockThreads();
 251     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 252         PyObject* s = wx2PyString(fileName);
 253         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 254         Py_DECREF(s);
 255     }
 256     wxPyEndBlockThreads();
 257 }
 258
 259 void wxPyApp::MacPrintFile(const wxString &fileName)
 260 {
 261     wxPyBeginBlockThreads();
 262     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 263         PyObject* s = wx2PyString(fileName);
 264         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 265         Py_DECREF(s);
 266     }
 267     wxPyEndBlockThreads();
 268 }
 269
 270 void wxPyApp::MacNewFile()
 271 {
 272     wxPyBeginBlockThreads();
 273     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 274         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 275     wxPyEndBlockThreads();
 276 }
 277
 278 void wxPyApp::MacReopenApp()
 279 {
 280     wxPyBeginBlockThreads();
 281     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 282         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 283     wxPyEndBlockThreads();
 284 }
 285
 286
 287 /*static*/
 288 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 289 #ifdef __WXMAC__
 290     return s_macSupportPCMenuShortcuts;
 291 #else
 292     return 0;
 293 #endif
 294 }
 295
 296 /*static*/
 297 long wxPyApp::GetMacAboutMenuItemId() {
 298 #ifdef __WXMAC__
 299     return s_macAboutMenuItemId;
 300 #else
 301     return 0;
 302 #endif
 303 }
 304
 305 /*static*/
 306 long wxPyApp::GetMacPreferencesMenuItemId() {
 307 #ifdef __WXMAC__
 308     return s_macPreferencesMenuItemId;
 309 #else
 310     return 0;
 311 #endif
 312 }
 313
 314 /*static*/
 315 long wxPyApp::GetMacExitMenuItemId() {
 316 #ifdef __WXMAC__
 317     return s_macExitMenuItemId;
 318 #else
 319     return 0;
 320 #endif
 321 }
 322
 323 /*static*/
 324 wxString wxPyApp::GetMacHelpMenuTitleName() {
 325 #ifdef __WXMAC__
 326     return s_macHelpMenuTitleName;
 327 #else
 328     return wxEmptyString;
 329 #endif
 330 }
 331
 332 /*static*/
 333 void wxPyApp::SetMacSupportPCMenuShortcuts(bool val) {
 334 #ifdef __WXMAC__
 335     s_macSupportPCMenuShortcuts = val;
 336 #endif
 337 }
 338
 339 /*static*/
 340 void wxPyApp::SetMacAboutMenuItemId(long val) {
 341 #ifdef __WXMAC__
 342     s_macAboutMenuItemId = val;
 343 #endif
 344 }
 345
 346 /*static*/
 347 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 348 #ifdef __WXMAC__
 349     s_macPreferencesMenuItemId = val;
 350 #endif
 351 }
 352
 353 /*static*/
 354 void wxPyApp::SetMacExitMenuItemId(long val) {
 355 #ifdef __WXMAC__
 356     s_macExitMenuItemId = val;
 357 #endif
 358 }
 359
 360 /*static*/
 361 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 362 #ifdef __WXMAC__
 363     s_macHelpMenuTitleName = val;
 364 #endif
 365 }
 366
 367
 368 // This finishes the initialization of wxWindows and then calls the OnInit
 369 // that should be present in the derived (Python) class.
 370 void wxPyApp::_BootstrapApp()
 371 {
 372     bool        result;
 373     PyObject*   retval = NULL;
 374     PyObject*   pyint  = NULL;
 375
 376
 377     // Get any command-line args passed to this program from the sys module
 378     int    argc = 0;
 379     char** argv = NULL;
 380     wxPyBeginBlockThreads();
 381     PyObject* sysargv = PySys_GetObject("argv");
 382     if (sysargv != NULL) {
 383         argc = PyList_Size(sysargv);
 384         argv = new char*[argc+1];
 385         int x;
 386         for(x=0; x<argc; x++) {
 387             PyObject *pyArg = PyList_GetItem(sysargv, x);
 388             argv[x] = PyString_AsString(pyArg);
 389         }
 390         argv[argc] = NULL;
 391     }
 392     wxPyEndBlockThreads();
 393
 394     result = wxEntryStart(argc, argv);
 395     delete [] argv;
 396
 397     wxPyBeginBlockThreads();
 398     if (! result)  {
 399         PyErr_SetString(PyExc_SystemError, "wxEntryStart failed!");
 400         goto error;
 401     }
 402
 403     // The stock objects were all NULL when they were loaded into
 404     // SWIG generated proxies, so re-init those now...
 405     wxPy_ReinitStockObjects(3);
 406
 407     // It's now ok to generate exceptions for assertion errors.
 408     wxPythonApp->SetStartupComplete(True);
 409
 410     // Call the Python wxApp's OnInit function
 411     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 412
 413         PyObject* method = m_myInst.GetLastFound();
 414         PyObject* argTuple = PyTuple_New(0);
 415         retval = PyEval_CallObject(method, argTuple);
 416         Py_DECREF(argTuple);
 417         Py_DECREF(method);
 418         if (retval == NULL)
 419             goto error;
 420
 421         pyint = PyNumber_Int(retval);
 422         if (! pyint) {
 423             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 424             goto error;
 425         }
 426         result = PyInt_AS_LONG(pyint);
 427     }
 428     else {
 429         // Is it okay if there is no OnInit?  Probably so...
 430         result = True;
 431     }
 432
 433
 434     if (! result) {
 435         PyErr_SetString(PyExc_SystemExit, "OnInit returned False, exiting...");
 436     }
 437
 438  error:
 439     Py_XDECREF(retval);
 440     Py_XDECREF(pyint);
 441
 442     wxPyEndBlockThreads();
 443 };
 444
 445 //---------------------------------------------------------------------
 446 //----------------------------------------------------------------------
 447
 448
 449 #if 0
 450 static char* wxPyCopyCString(const wxChar* src)
 451 {
 452     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 453     size_t len = strlen(buff);
 454     char*  dest = new char[len+1];
 455     strcpy(dest, buff);
 456     return dest;
 457 }
 458
 459 #if wxUSE_UNICODE
 460 static char* wxPyCopyCString(const char* src)   // we need a char version too
 461 {
 462     size_t len = strlen(src);
 463     char*  dest = new char[len+1];
 464     strcpy(dest, src);
 465     return dest;
 466 }
 467 #endif
 468
 469 static wxChar* wxPyCopyWString(const char *src)
 470 {
 471     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 472     wxString str(src, *wxConvCurrent);
 473     return copystring(str);
 474 }
 475
 476 #if wxUSE_UNICODE
 477 static wxChar* wxPyCopyWString(const wxChar *src)
 478 {
 479     return copystring(src);
 480 }
 481 #endif
 482 #endif
 483
 484
 485 inline const char* dropwx(const char* name) {
 486     if (name[0] == 'w' && name[1] == 'x')
 487         return name+2;
 488     else
 489         return name;
 490 }
 491
 492 //----------------------------------------------------------------------
 493
 494 // This function is called when the wxc module is imported to do some initial
 495 // setup.  (Before there is a wxApp object.)  The rest happens in
 496 // wxPyApp::_BootstrapApp
 497 void __wxPyPreStart(PyObject* moduleDict)
 498 {
 499
 500 #ifdef __WXMSW__
 501 //    wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 502 #endif
 503
 504 #ifdef WXP_WITH_THREAD
 505     PyEval_InitThreads();
 506     wxPyTStates = new wxPyThreadStateArray;
 507     wxPyTMutex = new wxMutex;
 508
 509     // Save the current (main) thread state in our array
 510     PyThreadState* tstate = wxPyBeginAllowThreads();
 511     wxPyEndAllowThreads(tstate);
 512 #endif
 513
 514     // Ensure that the build options in the DLL (or whatever) match this build
 515     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 516
 517     // Init the stock objects to a non-NULL value so SWIG doesn't create them as None
 518     wxPy_ReinitStockObjects(1);
 519 }
 520
 521
 522
 523 void __wxPyCleanup() {
 524     wxPyDoingCleanup = True;
 525     if (wxPyDoCleanup) {
 526         wxPyDoCleanup = False;
 527         wxEntryCleanup();
 528     }
 529 #ifdef WXP_WITH_THREAD
 530     delete wxPyTMutex;
 531     wxPyTMutex = NULL;
 532     wxPyTStates->Empty();
 533     delete wxPyTStates;
 534     wxPyTStates = NULL;
 535 #endif
 536 }
 537
 538
 539 // Save a reference to the dictionary of the wx.core module, and inject
 540 // a few more things into it.
 541 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 542 {
 543
 544     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 545         return NULL;
 546
 547     if (!PyDict_Check(wxPython_dict)) {
 548         PyErr_SetString(PyExc_TypeError, "_wxPySetDictionary must have dictionary object!");
 549         return NULL;
 550     }
 551
 552     if (! wxPyPtrTypeMap)
 553         wxPyPtrTypeMap = PyDict_New();
 554     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 555
 556     // Create an exception object to use for wxASSERTions
 557     wxPyAssertionError = PyErr_NewException("wx.core.PyAssertionError",
 558                                             PyExc_AssertionError, NULL);
 559     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 560
 561
 562 #ifdef __WXMOTIF__
 563 #define wxPlatform "__WXMOTIF__"
 564 #define wxPlatName "wxMotif"
 565 #endif
 566 #ifdef __WXX11__
 567 #define wxPlatform "__WXX11__"
 568 #define wxPlatName "wxX11"
 569 #endif
 570 #ifdef __WXGTK__
 571 #define wxPlatform "__WXGTK__"
 572 #define wxPlatName "wxGTK"
 573 #endif
 574 #ifdef __WXMSW__
 575 #define wxPlatform "__WXMSW__"
 576 #define wxPlatName "wxMSW"
 577 #endif
 578 #ifdef __WXMAC__
 579 #define wxPlatform "__WXMAC__"
 580 #define wxPlatName "wxMac"
 581 #endif
 582
 583 #ifdef __WXDEBUG__
 584     int wxdebug = 1;
 585 #else
 586     int wxdebug = 0;
 587 #endif
 588
 589     // These should be deprecated in favor of the PlatformInfo tuple built below...
 590     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 591     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 592     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 593
 594
 595     PyObject* PlatInfo = PyList_New(0);
 596     PyObject* obj;
 597
 598 #define _AddInfoString(st) \
 599     obj = PyString_FromString(st); \
 600     PyList_Append(PlatInfo, obj); \
 601     Py_DECREF(obj)
 602
 603     _AddInfoString(wxPlatform);
 604     _AddInfoString(wxPlatName);
 605 #if wxUSE_UNICODE
 606     _AddInfoString("unicode");
 607 #else
 608     _AddInfoString("ascii");
 609 #endif
 610 #ifdef __WXGTK__
 611 #ifdef __WXGTK20__
 612     _AddInfoString("gtk2");
 613 #else
 614     _AddInfoString("gtk1");
 615 #endif
 616 #endif
 617
 618 #undef _AddInfoString
 619
 620     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 621     Py_DECREF(PlatInfo);
 622     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 623
 624     RETURN_NONE();
 625 }
 626
 627
 628 //---------------------------------------------------------------------------
 629
 630 // Python's PyInstance_Check does not return True for instances of new-style
 631 // classes.  This should get close enough for both new and old classes but I
 632 // should re-evaluate the need for doing instance checks...
 633 bool wxPyInstance_Check(PyObject* obj) {
 634     return PyObject_HasAttrString(obj, "__class__") != 0;
 635 }
 636
 637
 638 // This one checks if the object is an instance of a SWIG proxy class (it has
 639 // a .this attribute)
 640 bool wxPySwigInstance_Check(PyObject* obj) {
 641     return PyObject_HasAttrString(obj, "this") != 0;
 642 }
 643
 644 //---------------------------------------------------------------------------
 645
 646 // The stock objects are no longer created when the wxc module is imported,
 647 // but only after the app object has been created.  The
 648 // wxPy_ReinitStockObjects function will be called 3 times to pass the stock
 649 // objects though various stages of evolution:
 650 //
 651 //   pass 1: Set all the pointers to a non-NULL value so the Python proxy
 652 //           object will be created (otherwise it will just use None.)
 653 //
 654 //   pass 2: After the module has been imported and the python proxys have
 655 //           been created, then set the __class__ to be _wxPyUnbornObject so
 656 //           it will catch any access to the object and will raise an exception.
 657 //
 658 //   pass 3: Finally, from OnInit patch things up so the stock objects can
 659 //           be used.
 660
 661
 662 PyObject* __wxPyFixStockObjects(PyObject* /* self */, PyObject* args)
 663 {
 664     wxPy_ReinitStockObjects(2);
 665     RETURN_NONE();
 666 }
 667
 668
 669 static void rsoPass2(const char* name)
 670 {
 671     static PyObject* unbornObjectClass = NULL;
 672     PyObject* obj;
 673
 674     if (unbornObjectClass == NULL) {
 675         unbornObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyUnbornObject");
 676         Py_INCREF(unbornObjectClass);
 677     }
 678
 679     // Find the object instance
 680     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 681     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 682     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 683
 684     // Change its class
 685     PyObject_SetAttrString(obj, "__class__",  unbornObjectClass);
 686
 687 }
 688
 689 static void rsoPass3(const char* name, const char* classname, void* ptr)
 690 {
 691     PyObject* obj;
 692     PyObject* classobj;
 693     PyObject* ptrobj;
 694
 695     // Find the object instance
 696     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 697     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 698     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 699
 700     // Find the class object and put it back in the instance
 701     classobj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(classname));
 702     wxCHECK_RET(classobj != NULL, wxT("Unable to find stock class object"));
 703     PyObject_SetAttrString(obj, "__class__",  classobj);
 704
 705     // Rebuild the .this swigified pointer with the new value of the C++ pointer
 706     ptrobj = wxPyMakeSwigPtr(ptr, wxString(classname, *wxConvCurrent));
 707     PyObject_SetAttrString(obj, "this", ptrobj);
 708     Py_DECREF(ptrobj);
 709 }
 710
 711
 712
 713 void wxPy_ReinitStockObjects(int pass)
 714 {
 715
 716 #define REINITOBJ(name, classname) \
 717     if (pass == 1) { name = (classname*)0xC0C0C0C0; } \
 718     else if (pass == 2) { rsoPass2(#name); } \
 719     else if (pass == 3) { rsoPass3(#name, #classname, (void*)name); }
 720
 721
 722 #define REINITOBJ2(name, classname) \
 723     if (pass == 1) { } \
 724     else if (pass == 2) { rsoPass2(#name); } \
 725     else if (pass == 3) { rsoPass3(#name, #classname, (void*)&name); }
 726
 727
 728     REINITOBJ(wxNORMAL_FONT, wxFont);
 729     REINITOBJ(wxSMALL_FONT, wxFont);
 730     REINITOBJ(wxITALIC_FONT, wxFont);
 731     REINITOBJ(wxSWISS_FONT, wxFont);
 732
 733     REINITOBJ(wxRED_PEN, wxPen);
 734     REINITOBJ(wxCYAN_PEN, wxPen);
 735     REINITOBJ(wxGREEN_PEN, wxPen);
 736     REINITOBJ(wxBLACK_PEN, wxPen);
 737     REINITOBJ(wxWHITE_PEN, wxPen);
 738     REINITOBJ(wxTRANSPARENT_PEN, wxPen);
 739     REINITOBJ(wxBLACK_DASHED_PEN, wxPen);
 740     REINITOBJ(wxGREY_PEN, wxPen);
 741     REINITOBJ(wxMEDIUM_GREY_PEN, wxPen);
 742     REINITOBJ(wxLIGHT_GREY_PEN, wxPen);
 743
 744     REINITOBJ(wxBLUE_BRUSH, wxBrush);
 745     REINITOBJ(wxGREEN_BRUSH, wxBrush);
 746     REINITOBJ(wxWHITE_BRUSH, wxBrush);
 747     REINITOBJ(wxBLACK_BRUSH, wxBrush);
 748     REINITOBJ(wxTRANSPARENT_BRUSH, wxBrush);
 749     REINITOBJ(wxCYAN_BRUSH, wxBrush);
 750     REINITOBJ(wxRED_BRUSH, wxBrush);
 751     REINITOBJ(wxGREY_BRUSH, wxBrush);
 752     REINITOBJ(wxMEDIUM_GREY_BRUSH, wxBrush);
 753     REINITOBJ(wxLIGHT_GREY_BRUSH, wxBrush);
 754
 755     REINITOBJ(wxBLACK, wxColour);
 756     REINITOBJ(wxWHITE, wxColour);
 757     REINITOBJ(wxRED, wxColour);
 758     REINITOBJ(wxBLUE, wxColour);
 759     REINITOBJ(wxGREEN, wxColour);
 760     REINITOBJ(wxCYAN, wxColour);
 761     REINITOBJ(wxLIGHT_GREY, wxColour);
 762
 763     REINITOBJ(wxSTANDARD_CURSOR, wxCursor);
 764     REINITOBJ(wxHOURGLASS_CURSOR, wxCursor);
 765     REINITOBJ(wxCROSS_CURSOR, wxCursor);
 766
 767     REINITOBJ2(wxNullBitmap, wxBitmap);
 768     REINITOBJ2(wxNullIcon, wxIcon);
 769     REINITOBJ2(wxNullCursor, wxCursor);
 770     REINITOBJ2(wxNullPen, wxPen);
 771     REINITOBJ2(wxNullBrush, wxBrush);
 772     REINITOBJ2(wxNullPalette, wxPalette);
 773     REINITOBJ2(wxNullFont, wxFont);
 774     REINITOBJ2(wxNullColour, wxColour);
 775
 776     REINITOBJ(wxTheFontList, wxFontList);
 777     REINITOBJ(wxThePenList, wxPenList);
 778     REINITOBJ(wxTheBrushList, wxBrushList);
 779     REINITOBJ(wxTheColourDatabase, wxColourDatabase);
 780
 781
 782     REINITOBJ(wxTheClipboard, wxClipboard);
 783     REINITOBJ2(wxDefaultValidator, wxValidator);
 784     REINITOBJ2(wxNullImage, wxImage);
 785     REINITOBJ2(wxNullAcceleratorTable, wxAcceleratorTable);
 786
 787 #undef REINITOBJ
 788 #undef REINITOBJ2
 789 }
 790
 791 //---------------------------------------------------------------------------
 792
 793 void wxPyClientData_dtor(wxPyClientData* self) {
 794     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 795                                         // may have already garbage collected the object...
 796         wxPyBeginBlockThreads();
 797         Py_DECREF(self->m_obj);
 798         self->m_obj = NULL;
 799         wxPyEndBlockThreads();
 800     }
 801 }
 802
 803 void wxPyUserData_dtor(wxPyUserData* self) {
 804     if (! wxPyDoingCleanup) {
 805         wxPyBeginBlockThreads();
 806         Py_DECREF(self->m_obj);
 807         self->m_obj = NULL;
 808         wxPyEndBlockThreads();
 809     }
 810 }
 811
 812
 813 // This is called when an OOR controled object is being destroyed.  Although
 814 // the C++ object is going away there is no way to force the Python object
 815 // (and all references to it) to die too.  This causes problems (crashes) in
 816 // wxPython when a python shadow object attempts to call a C++ method using
 817 // the now bogus pointer... So to try and prevent this we'll do a little black
 818 // magic and change the class of the python instance to a class that will
 819 // raise an exception for any attempt to call methods with it.  See
 820 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 821 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 822
 823     static PyObject* deadObjectClass = NULL;
 824
 825     wxPyBeginBlockThreads();
 826     if (deadObjectClass == NULL) {
 827         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 828         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 829         // will lead to a deadlock when it tries to aquire the GIL again.
 830         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 831         Py_INCREF(deadObjectClass);
 832     }
 833
 834
 835     // Only if there is more than one reference to the object
 836     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 ) {
 837         // bool isInstance = wxPyInstance_Check(self->m_obj);
 838         // TODO same here
 839         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 840
 841         // Call __del__, if there is one.
 842         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 843         if (func) {
 844             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 845             Py_XDECREF(rv);
 846             Py_DECREF(func);
 847         }
 848         if (PyErr_Occurred())
 849             PyErr_Clear();      // just ignore it for now
 850
 851
 852         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 853         if (dict) {
 854             // Clear the instance's dictionary
 855             PyDict_Clear(dict);
 856
 857             // put the name of the old class into the instance, and then reset the
 858             // class to be the dead class.
 859             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 860             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 861             PyDict_SetItemString(dict, "_name", name);
 862             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 863             //Py_INCREF(deadObjectClass);
 864             Py_DECREF(klass);
 865             Py_DECREF(name);
 866         }
 867     }
 868
 869     // m_obj is DECREF'd in the base class dtor...
 870     wxPyEndBlockThreads();
 871 }
 872
 873
 874 //---------------------------------------------------------------------------
 875 // Stuff used by OOR to find the right wxPython class type to return and to
 876 // build it.
 877
 878
 879 // The pointer type map is used when the "pointer" type name generated by SWIG
 880 // is not the same as the shadow class name, for example wxPyTreeCtrl
 881 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 882 // so we'll just make it a Python dictionary in the wx module's namespace.
 883 // (See __wxSetDictionary)
 884 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 885     if (! wxPyPtrTypeMap)
 886         wxPyPtrTypeMap = PyDict_New();
 887     PyDict_SetItemString(wxPyPtrTypeMap,
 888                          (char*)commonName,
 889                          PyString_FromString((char*)ptrName));
 890 }
 891
 892
 893
 894
 895 PyObject*  wxPyMake_wxObject(wxObject* source, bool checkEvtHandler) {
 896     PyObject* target = NULL;
 897     bool      isEvtHandler = False;
 898
 899     if (source) {
 900         // If it's derived from wxEvtHandler then there may
 901         // already be a pointer to a Python object that we can use
 902         // in the OOR data.
 903         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 904             isEvtHandler = True;
 905             wxEvtHandler* eh = (wxEvtHandler*)source;
 906             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 907             if (data) {
 908                 target = data->m_obj;
 909                 if (target)
 910                     Py_INCREF(target);
 911             }
 912         }
 913
 914         if (! target) {
 915             // Otherwise make it the old fashioned way by making a new shadow
 916             // object and putting this pointer in it.  Look up the class
 917             // heirarchy until we find a class name that is located in the
 918             // python module.
 919             const wxClassInfo* info   = source->GetClassInfo();
 920             wxString           name   = info->GetClassName();
 921             bool               exists = wxPyCheckSwigType(name);
 922             while (info && !exists) {
 923                 info = info->GetBaseClass1();
 924                 name = info->GetClassName();
 925                 exists = wxPyCheckSwigType(name);
 926             }
 927             if (info) {
 928                 target = wxPyConstructObject((void*)source, name, False);
 929                 if (target && isEvtHandler)
 930                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
 931             } else {
 932                 wxString msg(wxT("wxPython class not found for "));
 933                 msg += source->GetClassInfo()->GetClassName();
 934                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
 935                 target = NULL;
 936             }
 937         }
 938     } else {  // source was NULL so return None.
 939         Py_INCREF(Py_None); target = Py_None;
 940     }
 941     return target;
 942 }
 943
 944
 945 PyObject*  wxPyMake_wxSizer(wxSizer* source) {
 946     PyObject* target = NULL;
 947
 948     if (source && wxIsKindOf(source, wxSizer)) {
 949         // If it's derived from wxSizer then there may already be a pointer to
 950         // a Python object that we can use in the OOR data.
 951         wxSizer* sz = (wxSizer*)source;
 952         wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
 953         if (data) {
 954             target = data->m_obj;
 955             if (target)
 956                 Py_INCREF(target);
 957         }
 958     }
 959     if (! target) {
 960         target = wxPyMake_wxObject(source, False);
 961         if (target != Py_None)
 962             ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
 963     }
 964     return target;
 965 }
 966
 967
 968 //---------------------------------------------------------------------------
 969
 970
 971 #ifdef WXP_WITH_THREAD
 972 inline
 973 unsigned long wxPyGetCurrentThreadId() {
 974     return wxThread::GetCurrentId();
 975 }
 976
 977 static wxPyThreadState gs_shutdownTState;
 978
 979 static
 980 wxPyThreadState* wxPyGetThreadState() {
 981     if (wxPyTMutex == NULL) // Python is shutting down...
 982         return &gs_shutdownTState;
 983
 984     unsigned long ctid = wxPyGetCurrentThreadId();
 985     wxPyThreadState* tstate = NULL;
 986
 987     wxPyTMutex->Lock();
 988     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 989         wxPyThreadState& info = wxPyTStates->Item(i);
 990         if (info.tid == ctid) {
 991             tstate = &info;
 992             break;
 993         }
 994     }
 995     wxPyTMutex->Unlock();
 996     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
 997     return tstate;
 998 }
 999
1000
1001 static
1002 void wxPySaveThreadState(PyThreadState* tstate) {
1003     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
1004         gs_shutdownTState.tstate = tstate;
1005         return;
1006     }
1007     unsigned long ctid = wxPyGetCurrentThreadId();
1008     wxPyTMutex->Lock();
1009     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1010         wxPyThreadState& info = wxPyTStates->Item(i);
1011         if (info.tid == ctid) {
1012 #if 0
1013             if (info.tstate != tstate)
1014                 wxLogMessage("*** tstate mismatch!???");
1015 #endif
1016             // info.tstate = tstate;    *** DO NOT update existing ones???
1017             // Normally it will never change, but apparently COM callbacks
1018             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
1019             // tstate which will then be garbage the next time we try to use
1020             // it...
1021             wxPyTMutex->Unlock();
1022             return;
1023         }
1024     }
1025     // not found, so add it...
1026     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
1027     wxPyTMutex->Unlock();
1028 }
1029
1030 #endif
1031
1032
1033
1034 // Calls from Python to wxWindows code are wrapped in calls to these
1035 // functions:
1036
1037 PyThreadState* wxPyBeginAllowThreads() {
1038 #ifdef WXP_WITH_THREAD
1039     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1040     wxPySaveThreadState(saved);
1041     wxPyGetThreadState()->blocked -= 1;
1042     return saved;
1043 #else
1044     return NULL;
1045 #endif
1046 }
1047
1048 void wxPyEndAllowThreads(PyThreadState* saved) {
1049 #ifdef WXP_WITH_THREAD
1050     wxPyGetThreadState()->blocked += 1;
1051     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1052 #endif
1053 }
1054
1055
1056
1057 // Calls from wxWindows back to Python code, or even any PyObject
1058 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1059
1060 void wxPyBeginBlockThreads() {
1061 #ifdef WXP_WITH_THREAD
1062     wxPyThreadState* tstate = wxPyGetThreadState();
1063     if (tstate->blocked++ == 0) {  // if nested calls then do nothing
1064         PyEval_RestoreThread(tstate->tstate);
1065     }
1066 #endif
1067 }
1068
1069
1070 void wxPyEndBlockThreads() {
1071 #ifdef WXP_WITH_THREAD
1072     wxPyThreadState* tstate = wxPyGetThreadState();
1073     tstate->blocked -= 1;
1074     if ( tstate->blocked == 0) {  // if nested calls then do nothing
1075         PyEval_SaveThread();
1076     }
1077 #endif
1078 }
1079
1080
1081 //---------------------------------------------------------------------------
1082 // wxPyInputStream and wxPyCBInputStream methods
1083
1084
1085 void wxPyInputStream::close() {
1086     /* do nothing for now */
1087 }
1088
1089 void wxPyInputStream::flush() {
1090     /* do nothing for now */
1091 }
1092
1093 bool wxPyInputStream::eof() {
1094     if (m_wxis)
1095         return m_wxis->Eof();
1096     else
1097         return True;
1098 }
1099
1100 wxPyInputStream::~wxPyInputStream() {
1101     /* do nothing */
1102 }
1103
1104
1105
1106
1107 PyObject* wxPyInputStream::read(int size) {
1108     PyObject* obj = NULL;
1109     wxMemoryBuffer buf;
1110     const int BUFSIZE = 1024;
1111
1112     // check if we have a real wxInputStream to work with
1113     if (!m_wxis) {
1114         wxPyBeginBlockThreads();
1115         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1116         wxPyEndBlockThreads();
1117         return NULL;
1118     }
1119
1120     if (size < 0) {
1121         // read while bytes are available on the stream
1122         while ( m_wxis->CanRead() ) {
1123             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1124             buf.UngetAppendBuf(m_wxis->LastRead());
1125         }
1126
1127     } else {  // Read only size number of characters
1128         m_wxis->Read(buf.GetWriteBuf(size), size);
1129         buf.UngetWriteBuf(m_wxis->LastRead());
1130     }
1131
1132     // error check
1133     wxPyBeginBlockThreads();
1134     wxStreamError err = m_wxis->GetLastError();
1135     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1136         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1137     }
1138     else {
1139         // We use only strings for the streams, not unicode
1140         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1141     }
1142     wxPyEndBlockThreads();
1143     return obj;
1144 }
1145
1146
1147 PyObject* wxPyInputStream::readline(int size) {
1148     PyObject* obj = NULL;
1149     wxMemoryBuffer buf;
1150     int i;
1151     char ch;
1152
1153     // check if we have a real wxInputStream to work with
1154     if (!m_wxis) {
1155         wxPyBeginBlockThreads();
1156         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1157         wxPyEndBlockThreads();
1158         return NULL;
1159     }
1160
1161     // read until \n or byte limit reached
1162     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1163         ch = m_wxis->GetC();
1164         buf.AppendByte(ch);
1165     }
1166
1167     // errorcheck
1168     wxPyBeginBlockThreads();
1169     wxStreamError err = m_wxis->GetLastError();
1170     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1171         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1172     }
1173     else {
1174         // We use only strings for the streams, not unicode
1175         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1176     }
1177     wxPyEndBlockThreads();
1178     return obj;
1179 }
1180
1181
1182 PyObject* wxPyInputStream::readlines(int sizehint) {
1183     PyObject* pylist;
1184
1185     // check if we have a real wxInputStream to work with
1186     if (!m_wxis) {
1187         wxPyBeginBlockThreads();
1188         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1189         wxPyEndBlockThreads();
1190         return NULL;
1191     }
1192
1193     // init list
1194     wxPyBeginBlockThreads();
1195     pylist = PyList_New(0);
1196     if (!pylist) {
1197         wxPyBeginBlockThreads();
1198         PyErr_NoMemory();
1199         wxPyEndBlockThreads();
1200         return NULL;
1201     }
1202
1203     // read sizehint bytes or until EOF
1204     int i;
1205     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1206         PyObject* s = this->readline();
1207         if (s == NULL) {
1208             wxPyBeginBlockThreads();
1209             Py_DECREF(pylist);
1210             wxPyEndBlockThreads();
1211             return NULL;
1212         }
1213         wxPyBeginBlockThreads();
1214         PyList_Append(pylist, s);
1215         i += PyString_Size(s);
1216         wxPyEndBlockThreads();
1217     }
1218
1219     // error check
1220     wxStreamError err = m_wxis->GetLastError();
1221     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1222         wxPyBeginBlockThreads();
1223         Py_DECREF(pylist);
1224         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1225         wxPyEndBlockThreads();
1226         return NULL;
1227     }
1228
1229     return pylist;
1230 }
1231
1232
1233 void wxPyInputStream::seek(int offset, int whence) {
1234     if (m_wxis)
1235         m_wxis->SeekI(offset, wxSeekMode(whence));
1236 }
1237
1238 int wxPyInputStream::tell(){
1239     if (m_wxis)
1240         return m_wxis->TellI();
1241     else return 0;
1242 }
1243
1244
1245
1246
1247 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1248     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1249 {}
1250
1251
1252 wxPyCBInputStream::~wxPyCBInputStream() {
1253     if (m_block) wxPyBeginBlockThreads();
1254     Py_XDECREF(m_read);
1255     Py_XDECREF(m_seek);
1256     Py_XDECREF(m_tell);
1257     if (m_block) wxPyEndBlockThreads();
1258 }
1259
1260
1261 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1262     if (block) wxPyBeginBlockThreads();
1263
1264     PyObject* read = getMethod(py, "read");
1265     PyObject* seek = getMethod(py, "seek");
1266     PyObject* tell = getMethod(py, "tell");
1267
1268     if (!read) {
1269         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1270         Py_XDECREF(read);
1271         Py_XDECREF(seek);
1272         Py_XDECREF(tell);
1273         if (block) wxPyEndBlockThreads();
1274         return NULL;
1275     }
1276
1277     if (block) wxPyEndBlockThreads();
1278     return new wxPyCBInputStream(read, seek, tell, block);
1279 }
1280
1281
1282 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1283     return wxPyCBInputStream::create(py, block);
1284 }
1285
1286 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1287     if (!PyObject_HasAttrString(py, name))
1288         return NULL;
1289     PyObject* o = PyObject_GetAttrString(py, name);
1290     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1291         Py_DECREF(o);
1292         return NULL;
1293     }
1294     return o;
1295 }
1296
1297
1298 size_t wxPyCBInputStream::GetSize() const {
1299     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1300     if (m_seek && m_tell) {
1301         off_t temp = self->OnSysTell();
1302         off_t ret = self->OnSysSeek(0, wxFromEnd);
1303         self->OnSysSeek(temp, wxFromStart);
1304         return ret;
1305     }
1306     else
1307         return 0;
1308 }
1309
1310
1311 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1312     if (bufsize == 0)
1313         return 0;
1314
1315     wxPyBeginBlockThreads();
1316     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1317     PyObject* result = PyEval_CallObject(m_read, arglist);
1318     Py_DECREF(arglist);
1319
1320     size_t o = 0;
1321     if ((result != NULL) && PyString_Check(result)) {
1322         o = PyString_Size(result);
1323         if (o == 0)
1324             m_lasterror = wxSTREAM_EOF;
1325         if (o > bufsize)
1326             o = bufsize;
1327         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1328         Py_DECREF(result);
1329
1330     }
1331     else
1332         m_lasterror = wxSTREAM_READ_ERROR;
1333     wxPyEndBlockThreads();
1334     return o;
1335 }
1336
1337 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1338     m_lasterror = wxSTREAM_WRITE_ERROR;
1339     return 0;
1340 }
1341
1342 off_t wxPyCBInputStream::OnSysSeek(off_t off, wxSeekMode mode) {
1343     wxPyBeginBlockThreads();
1344 #ifdef _LARGE_FILES
1345     // off_t is a 64-bit value...
1346     PyObject* arglist = Py_BuildValue("(Li)", off, mode);
1347 #else
1348     PyObject* arglist = Py_BuildValue("(ii)", off, mode);
1349 #endif
1350     PyObject* result = PyEval_CallObject(m_seek, arglist);
1351     Py_DECREF(arglist);
1352     Py_XDECREF(result);
1353     wxPyEndBlockThreads();
1354     return OnSysTell();
1355 }
1356
1357
1358 off_t wxPyCBInputStream::OnSysTell() const {
1359     wxPyBeginBlockThreads();
1360     PyObject* arglist = Py_BuildValue("()");
1361     PyObject* result = PyEval_CallObject(m_tell, arglist);
1362     Py_DECREF(arglist);
1363     off_t o = 0;
1364     if (result != NULL) {
1365 #ifdef _LARGE_FILES
1366         if (PyLong_Check(result))
1367             o = PyLong_AsLongLong(result);
1368         else
1369 #endif
1370             o = PyInt_AsLong(result);
1371         Py_DECREF(result);
1372     };
1373     wxPyEndBlockThreads();
1374     return o;
1375 }
1376
1377 //----------------------------------------------------------------------
1378
1379 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1380
1381 wxPyCallback::wxPyCallback(PyObject* func) {
1382     m_func = func;
1383     Py_INCREF(m_func);
1384 }
1385
1386 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1387     m_func = other.m_func;
1388     Py_INCREF(m_func);
1389 }
1390
1391 wxPyCallback::~wxPyCallback() {
1392     wxPyBeginBlockThreads();
1393     Py_DECREF(m_func);
1394     wxPyEndBlockThreads();
1395 }
1396
1397
1398
1399 // This function is used for all events destined for Python event handlers.
1400 void wxPyCallback::EventThunker(wxEvent& event) {
1401     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1402     PyObject*       func = cb->m_func;
1403     PyObject*       result;
1404     PyObject*       arg;
1405     PyObject*       tuple;
1406     bool            checkSkip = False;
1407
1408     wxPyBeginBlockThreads();
1409     wxString className = event.GetClassInfo()->GetClassName();
1410
1411     // If the event is one of these types then pass the original
1412     // event object instead of the one passed to us.
1413     if ( className == wxT("wxPyEvent") ) {
1414         arg =       ((wxPyEvent*)&event)->GetSelf();
1415         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1416     }
1417     else if ( className == wxT("wxPyCommandEvent") ) {
1418         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1419         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1420     }
1421     else {
1422         arg = wxPyConstructObject((void*)&event, className);
1423     }
1424
1425     if (!arg) {
1426         PyErr_Print();
1427     } else {
1428         // Call the event handler, passing the event object
1429         tuple = PyTuple_New(1);
1430         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1431         result = PyEval_CallObject(func, tuple);
1432         if ( result ) {
1433             Py_DECREF(result);   // result is ignored, but we still need to decref it
1434             PyErr_Clear();       // Just in case...
1435         } else {
1436             PyErr_Print();
1437         }
1438
1439         if ( checkSkip ) {
1440             // if the event object was one of our special types and
1441             // it had been cloned, then we need to extract the Skipped
1442             // value from the original and set it in the clone.
1443             result = PyObject_CallMethod(arg, "GetSkipped", "");
1444             if ( result ) {
1445                 event.Skip(PyInt_AsLong(result));
1446                 Py_DECREF(result);
1447             } else {
1448                 PyErr_Print();
1449             }
1450         }
1451         Py_DECREF(tuple);
1452     }
1453     wxPyEndBlockThreads();
1454 }
1455
1456
1457 //----------------------------------------------------------------------
1458
1459 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1460       m_lastFound = NULL;
1461       m_self = other.m_self;
1462       m_class = other.m_class;
1463       if (m_self) {
1464           Py_INCREF(m_self);
1465           Py_INCREF(m_class);
1466       }
1467 }
1468
1469
1470 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1471     m_self = self;
1472     m_class = klass;
1473     m_incRef = incref;
1474     if (incref) {
1475         Py_INCREF(m_self);
1476         Py_INCREF(m_class);
1477     }
1478 }
1479
1480
1481 #if PYTHON_API_VERSION >= 1011
1482
1483 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1484 // in which the method was defined.  Starting with 2.2 it returns
1485 // "class that asked for the method" which seems totally bogus to me
1486 // but apprently it fixes some obscure problem waiting to happen in
1487 // Python.  Since the API was not documented Guido and the gang felt
1488 // safe in changing it.  Needless to say that totally screwed up the
1489 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1490 // code to find the class where the method is actually defined...
1491
1492 static
1493 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1494 {
1495     int i, n;
1496
1497     if (PyType_Check(klass)) {      // new style classes
1498         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1499         PyTypeObject* type = (PyTypeObject*)klass;
1500         PyObject *mro, *res, *base, *dict;
1501         /* Look in tp_dict of types in MRO */
1502         mro = type->tp_mro;
1503         assert(PyTuple_Check(mro));
1504         n = PyTuple_GET_SIZE(mro);
1505         for (i = 0; i < n; i++) {
1506             base = PyTuple_GET_ITEM(mro, i);
1507             if (PyClass_Check(base))
1508                 dict = ((PyClassObject *)base)->cl_dict;
1509             else {
1510                 assert(PyType_Check(base));
1511                 dict = ((PyTypeObject *)base)->tp_dict;
1512             }
1513             assert(dict && PyDict_Check(dict));
1514             res = PyDict_GetItem(dict, name);
1515             if (res != NULL)
1516                 return base;
1517         }
1518         return NULL;
1519     }
1520
1521     else if (PyClass_Check(klass)) { // old style classes
1522         // This code is borrowed/adapted from class_lookup in classobject.c
1523         PyClassObject* cp = (PyClassObject*)klass;
1524         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1525         if (value != NULL) {
1526             return (PyObject*)cp;
1527         }
1528         n = PyTuple_Size(cp->cl_bases);
1529         for (i = 0; i < n; i++) {
1530             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1531             PyObject *v = PyFindClassWithAttr(base, name);
1532             if (v != NULL)
1533                 return v;
1534         }
1535         return NULL;
1536     }
1537     return NULL;
1538 }
1539 #endif
1540
1541
1542 static
1543 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
1544 {
1545     PyObject* mgc = PyMethod_GET_CLASS(method);
1546
1547 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1548     return mgc;
1549 #else                             // 2.2 and after, the hard way...
1550
1551     PyObject* nameo = PyString_FromString(name);
1552     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
1553     Py_DECREF(nameo);
1554     return klass;
1555 #endif
1556 }
1557
1558
1559
1560 bool wxPyCallbackHelper::findCallback(const char* name) const {
1561     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1562     self->m_lastFound = NULL;
1563
1564     // If the object (m_self) has an attibute of the given name...
1565     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
1566         PyObject *method, *klass;
1567         method = PyObject_GetAttrString(m_self, (char*)name);
1568
1569         // ...and if that attribute is a method, and if that method's class is
1570         // not from a base class...
1571         if (PyMethod_Check(method) &&
1572             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
1573             ((klass == m_class) || PyObject_IsSubclass(klass, m_class))) {
1574
1575             // ...then we'll save a pointer to the method so callCallback can call it.
1576             self->m_lastFound = method;
1577         }
1578         else {
1579             Py_DECREF(method);
1580         }
1581     }
1582     return m_lastFound != NULL;
1583 }
1584
1585
1586 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1587     PyObject*   result;
1588     int         retval = False;
1589
1590     result = callCallbackObj(argTuple);
1591     if (result) {                       // Assumes an integer return type...
1592         retval = PyInt_AsLong(result);
1593         Py_DECREF(result);
1594         PyErr_Clear();                  // forget about it if it's not...
1595     }
1596     return retval;
1597 }
1598
1599 // Invoke the Python callable object, returning the raw PyObject return
1600 // value.  Caller should DECREF the return value and also manage the GIL.
1601 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1602     PyObject* result;
1603
1604     // Save a copy of the pointer in case the callback generates another
1605     // callback.  In that case m_lastFound will have a different value when
1606     // it gets back here...
1607     PyObject* method = m_lastFound;
1608
1609     result = PyEval_CallObject(method, argTuple);
1610     Py_DECREF(argTuple);
1611     Py_DECREF(method);
1612     if (!result) {
1613         PyErr_Print();
1614     }
1615     return result;
1616 }
1617
1618
1619 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1620     cbh.setSelf(self, klass, incref);
1621 }
1622
1623 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
1624     return cbh.findCallback(name);
1625 }
1626
1627 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1628     return cbh.callCallback(argTuple);
1629 }
1630
1631 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1632     return cbh.callCallbackObj(argTuple);
1633 }
1634
1635
1636 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1637     if (cbh->m_incRef) {
1638         wxPyBeginBlockThreads();
1639         Py_XDECREF(cbh->m_self);
1640         Py_XDECREF(cbh->m_class);
1641         wxPyEndBlockThreads();
1642     }
1643 }
1644
1645 //---------------------------------------------------------------------------
1646 //---------------------------------------------------------------------------
1647 // These event classes can be derived from in Python and passed through the event
1648 // system without losing anything.  They do this by keeping a reference to
1649 // themselves and some special case handling in wxPyCallback::EventThunker.
1650
1651
1652 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1653     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1654     //Py_INCREF(m_self);        //      circular loops...
1655     m_cloned = False;
1656 }
1657
1658 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1659     wxPyBeginBlockThreads();
1660     if (m_cloned)
1661         Py_DECREF(m_self);
1662     wxPyEndBlockThreads();
1663 }
1664
1665 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1666     wxPyBeginBlockThreads();
1667     if (m_cloned)
1668         Py_DECREF(m_self);
1669     m_self = self;
1670     if (clone) {
1671         Py_INCREF(m_self);
1672         m_cloned = True;
1673     }
1674     wxPyEndBlockThreads();
1675 }
1676
1677 PyObject* wxPyEvtSelfRef::GetSelf() const {
1678     Py_INCREF(m_self);
1679     return m_self;
1680 }
1681
1682
1683 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1684 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1685
1686
1687 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1688     : wxEvent(winid, commandType) {
1689 }
1690
1691
1692 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1693     : wxEvent(evt)
1694 {
1695     SetSelf(evt.m_self, True);
1696 }
1697
1698
1699 wxPyEvent::~wxPyEvent() {
1700 }
1701
1702
1703 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1704     : wxCommandEvent(commandType, id) {
1705 }
1706
1707
1708 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1709     : wxCommandEvent(evt)
1710 {
1711     SetSelf(evt.m_self, True);
1712 }
1713
1714
1715 wxPyCommandEvent::~wxPyCommandEvent() {
1716 }
1717
1718
1719
1720
1721
1722 //---------------------------------------------------------------------------
1723 //---------------------------------------------------------------------------
1724 // Convert a wxList to a Python List, only works for lists of wxObjects
1725
1726 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1727     wxList*     list = (wxList*)listbase;  // this is probably bad...
1728     PyObject*   pyList;
1729     PyObject*   pyObj;
1730     wxObject*   wxObj;
1731     wxNode*     node = list->GetFirst();
1732
1733     wxPyBeginBlockThreads();
1734     pyList = PyList_New(0);
1735     while (node) {
1736         wxObj = node->GetData();
1737         pyObj = wxPyMake_wxObject(wxObj);
1738         PyList_Append(pyList, pyObj);
1739         node = node->GetNext();
1740     }
1741     wxPyEndBlockThreads();
1742     return pyList;
1743 }
1744
1745 //----------------------------------------------------------------------
1746
1747 long wxPyGetWinHandle(wxWindow* win) {
1748
1749 #ifdef __WXMSW__
1750     return (long)win->GetHandle();
1751 #endif
1752
1753     // Find and return the actual X-Window.
1754 #ifdef __WXGTK__
1755     if (win->m_wxwindow) {
1756 #ifdef __WXGTK20__
1757         return (long) GDK_WINDOW_XWINDOW(GTK_PIZZA(win->m_wxwindow)->bin_window);
1758 #else
1759         GdkWindowPrivate* bwin = (GdkWindowPrivate*)GTK_PIZZA(win->m_wxwindow)->bin_window;
1760         if (bwin) {
1761             return (long)bwin->xwindow;
1762         }
1763 #endif
1764     }
1765 #endif
1766
1767 #ifdef __WXMAC__
1768     return (long)MAC_WXHWND(win->MacGetRootWindow());
1769 #endif
1770
1771     return 0;
1772 }
1773
1774 //----------------------------------------------------------------------
1775 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1776 // included in every file over and over again...
1777
1778 #if PYTHON_API_VERSION >= 1009
1779     static char* wxStringErrorMsg = "String or Unicode type required";
1780 #else
1781     static char* wxStringErrorMsg = "String type required";
1782 #endif
1783
1784
1785 wxString* wxString_in_helper(PyObject* source) {
1786     wxString* target;
1787 #if PYTHON_API_VERSION >= 1009  // Have Python unicode API
1788     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1789         PyErr_SetString(PyExc_TypeError, wxStringErrorMsg);
1790         return NULL;
1791     }
1792 #if wxUSE_UNICODE
1793     if (PyUnicode_Check(source)) {
1794         target = new wxString();
1795         size_t len = PyUnicode_GET_SIZE(source);
1796         if (len) {
1797             PyUnicode_AsWideChar((PyUnicodeObject*)source, target->GetWriteBuf(len), len);
1798             target->UngetWriteBuf();
1799         }
1800     } else {
1801         // It is a string, get pointers to it and transform to unicode
1802         char* tmpPtr; int tmpSize;
1803         PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1804         target = new wxString(tmpPtr, *wxConvCurrent, tmpSize);
1805     }
1806 #else
1807     char* tmpPtr; int tmpSize;
1808     if (PyString_AsStringAndSize(source, &tmpPtr, &tmpSize) == -1) {
1809         PyErr_SetString(PyExc_TypeError, "Unable to convert string");
1810         return NULL;
1811     }
1812     target = new wxString(tmpPtr, tmpSize);
1813 #endif // wxUSE_UNICODE
1814
1815 #else  // No Python unicode API (1.5.2)
1816     if (!PyString_Check(source)) {
1817         PyErr_SetString(PyExc_TypeError, wxStringErrorMsg);
1818         return NULL;
1819     }
1820     target = new wxString(PyString_AS_STRING(source), PyString_GET_SIZE(source));
1821 #endif
1822     return target;
1823 }
1824
1825
1826 // Similar to above except doesn't use "new" and doesn't set an exception
1827 wxString Py2wxString(PyObject* source)
1828 {
1829     wxString target;
1830     bool     doDecRef = False;
1831
1832 #if PYTHON_API_VERSION >= 1009  // Have Python unicode API
1833     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1834         // Convert to String if not one already...  (TODO: Unicode too?)
1835         source = PyObject_Str(source);
1836         doDecRef = True;
1837     }
1838
1839 #if wxUSE_UNICODE
1840     if (PyUnicode_Check(source)) {
1841         size_t len = PyUnicode_GET_SIZE(source);
1842         if (len) {
1843             PyUnicode_AsWideChar((PyUnicodeObject*)source, target.GetWriteBuf(len), len);
1844             target.UngetWriteBuf();
1845         }
1846     } else {
1847         // It is a string, get pointers to it and transform to unicode
1848         char* tmpPtr; int tmpSize;
1849         PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1850         target = wxString(tmpPtr, *wxConvCurrent, tmpSize);
1851     }
1852 #else
1853     char* tmpPtr; int tmpSize;
1854     PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1855     target = wxString(tmpPtr, tmpSize);
1856 #endif // wxUSE_UNICODE
1857
1858 #else  // No Python unicode API (1.5.2)
1859     if (!PyString_Check(source)) {
1860         // Convert to String if not one already...
1861         source = PyObject_Str(source);
1862         doDecRef = True;
1863     }
1864     target = wxString(PyString_AS_STRING(source), PyString_GET_SIZE(source));
1865 #endif
1866
1867     if (doDecRef)
1868         Py_DECREF(source);
1869     return target;
1870 }
1871
1872
1873 // Make either a Python String or Unicode object, depending on build mode
1874 PyObject* wx2PyString(const wxString& src)
1875 {
1876     PyObject* str;
1877 #if wxUSE_UNICODE
1878     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
1879 #else
1880     str = PyString_FromStringAndSize(src.c_str(), src.Len());
1881 #endif
1882     return str;
1883 }
1884
1885
1886 //----------------------------------------------------------------------
1887
1888
1889 byte* byte_LIST_helper(PyObject* source) {
1890     if (!PyList_Check(source)) {
1891         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1892         return NULL;
1893     }
1894     int count = PyList_Size(source);
1895     byte* temp = new byte[count];
1896     if (! temp) {
1897         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1898         return NULL;
1899     }
1900     for (int x=0; x<count; x++) {
1901         PyObject* o = PyList_GetItem(source, x);
1902         if (! PyInt_Check(o)) {
1903             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1904             return NULL;
1905         }
1906         temp[x] = (byte)PyInt_AsLong(o);
1907     }
1908     return temp;
1909 }
1910
1911
1912 int* int_LIST_helper(PyObject* source) {
1913     if (!PyList_Check(source)) {
1914         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1915         return NULL;
1916     }
1917     int count = PyList_Size(source);
1918     int* temp = new int[count];
1919     if (! temp) {
1920         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1921         return NULL;
1922     }
1923     for (int x=0; x<count; x++) {
1924         PyObject* o = PyList_GetItem(source, x);
1925         if (! PyInt_Check(o)) {
1926             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1927             return NULL;
1928         }
1929         temp[x] = PyInt_AsLong(o);
1930     }
1931     return temp;
1932 }
1933
1934
1935 long* long_LIST_helper(PyObject* source) {
1936     if (!PyList_Check(source)) {
1937         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1938         return NULL;
1939     }
1940     int count = PyList_Size(source);
1941     long* temp = new long[count];
1942     if (! temp) {
1943         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1944         return NULL;
1945     }
1946     for (int x=0; x<count; x++) {
1947         PyObject* o = PyList_GetItem(source, x);
1948         if (! PyInt_Check(o)) {
1949             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1950             return NULL;
1951         }
1952         temp[x] = PyInt_AsLong(o);
1953     }
1954     return temp;
1955 }
1956
1957
1958 char** string_LIST_helper(PyObject* source) {
1959     if (!PyList_Check(source)) {
1960         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1961         return NULL;
1962     }
1963     int count = PyList_Size(source);
1964     char** temp = new char*[count];
1965     if (! temp) {
1966         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1967         return NULL;
1968     }
1969     for (int x=0; x<count; x++) {
1970         PyObject* o = PyList_GetItem(source, x);
1971         if (! PyString_Check(o)) {
1972             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
1973             return NULL;
1974         }
1975         temp[x] = PyString_AsString(o);
1976     }
1977     return temp;
1978 }
1979
1980 //--------------------------------
1981 // Part of patch from Tim Hochberg
1982 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
1983     if (PyInt_Check(o1) && PyInt_Check(o2)) {
1984         point->x = PyInt_AS_LONG(o1);
1985         point->y = PyInt_AS_LONG(o2);
1986         return True;
1987     }
1988     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
1989         point->x = (int)PyFloat_AS_DOUBLE(o1);
1990         point->y = (int)PyFloat_AS_DOUBLE(o2);
1991         return True;
1992     }
1993     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {  // TODO: Why???
1994         // Disallow instances because they can cause havok
1995         return False;
1996     }
1997     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
1998         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
1999         point->x = PyInt_AsLong(o1);
2000         point->y = PyInt_AsLong(o2);
2001         return True;
2002     }
2003     return False;
2004 }
2005
2006
2007 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
2008     // Putting all of the declarations here allows
2009     // us to put the error handling all in one place.
2010     int x;
2011     wxPoint* temp;
2012     PyObject *o, *o1, *o2;
2013     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2014
2015     if (!PySequence_Check(source)) {
2016         goto error0;
2017     }
2018
2019     // The length of the sequence is returned in count.
2020     *count = PySequence_Length(source);
2021     if (*count < 0) {
2022         goto error0;
2023     }
2024
2025     temp = new wxPoint[*count];
2026     if (!temp) {
2027         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2028         return NULL;
2029     }
2030     for (x=0; x<*count; x++) {
2031         // Get an item: try fast way first.
2032         if (isFast) {
2033             o = PySequence_Fast_GET_ITEM(source, x);
2034         }
2035         else {
2036             o = PySequence_GetItem(source, x);
2037             if (o == NULL) {
2038                 goto error1;
2039             }
2040         }
2041
2042         // Convert o to wxPoint.
2043         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2044             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2045             o1 = PySequence_Fast_GET_ITEM(o, 0);
2046             o2 = PySequence_Fast_GET_ITEM(o, 1);
2047             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2048                 goto error2;
2049             }
2050         }
2051         else if (wxPySwigInstance_Check(o)) {
2052             wxPoint* pt;
2053             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2054                 goto error2;
2055             }
2056             temp[x] = *pt;
2057         }
2058         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2059             o1 = PySequence_GetItem(o, 0);
2060             o2 = PySequence_GetItem(o, 1);
2061             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2062                 goto error3;
2063             }
2064             Py_DECREF(o1);
2065             Py_DECREF(o2);
2066         }
2067         else {
2068             goto error2;
2069         }
2070         // Clean up.
2071         if (!isFast)
2072             Py_DECREF(o);
2073     }
2074     return temp;
2075
2076 error3:
2077     Py_DECREF(o1);
2078     Py_DECREF(o2);
2079 error2:
2080     if (!isFast)
2081         Py_DECREF(o);
2082 error1:
2083     delete [] temp;
2084 error0:
2085     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2086     return NULL;
2087 }
2088 // end of patch
2089 //------------------------------
2090
2091
2092 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2093     if (!PyList_Check(source)) {
2094         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2095         return NULL;
2096     }
2097     int count = PyList_Size(source);
2098     wxBitmap** temp = new wxBitmap*[count];
2099     if (! temp) {
2100         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2101         return NULL;
2102     }
2103     for (int x=0; x<count; x++) {
2104         PyObject* o = PyList_GetItem(source, x);
2105         if (wxPySwigInstance_Check(o)) {
2106             wxBitmap*    pt;
2107             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2108                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2109                 return NULL;
2110             }
2111             temp[x] = pt;
2112         }
2113         else {
2114             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2115             return NULL;
2116         }
2117     }
2118     return temp;
2119 }
2120
2121
2122
2123 wxString* wxString_LIST_helper(PyObject* source) {
2124     if (!PyList_Check(source)) {
2125         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2126         return NULL;
2127     }
2128     int count = PyList_Size(source);
2129     wxString* temp = new wxString[count];
2130     if (! temp) {
2131         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2132         return NULL;
2133     }
2134     for (int x=0; x<count; x++) {
2135         PyObject* o = PyList_GetItem(source, x);
2136 #if PYTHON_API_VERSION >= 1009
2137         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2138             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2139             return NULL;
2140         }
2141 #else
2142         if (! PyString_Check(o)) {
2143             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2144             return NULL;
2145         }
2146 #endif
2147
2148         wxString* pStr = wxString_in_helper(o);
2149         temp[x] = *pStr;
2150         delete pStr;
2151     }
2152     return temp;
2153 }
2154
2155
2156 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2157     if (!PyList_Check(source)) {
2158         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2159         return NULL;
2160     }
2161     int count                = PyList_Size(source);
2162     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2163     if (! temp) {
2164         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2165         return NULL;
2166     }
2167     for (int x=0; x<count; x++) {
2168         PyObject* o = PyList_GetItem(source, x);
2169         if (wxPySwigInstance_Check(o)) {
2170             wxAcceleratorEntry* ae;
2171             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2172                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2173                 return NULL;
2174             }
2175             temp[x] = *ae;
2176         }
2177         else if (PyTuple_Check(o)) {
2178             PyObject* o1 = PyTuple_GetItem(o, 0);
2179             PyObject* o2 = PyTuple_GetItem(o, 1);
2180             PyObject* o3 = PyTuple_GetItem(o, 2);
2181             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2182         }
2183         else {
2184             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2185             return NULL;
2186         }
2187     }
2188     return temp;
2189 }
2190
2191
2192 wxPen** wxPen_LIST_helper(PyObject* source) {
2193     if (!PyList_Check(source)) {
2194         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2195         return NULL;
2196     }
2197     int count = PyList_Size(source);
2198     wxPen** temp = new wxPen*[count];
2199     if (!temp) {
2200         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2201         return NULL;
2202     }
2203     for (int x=0; x<count; x++) {
2204         PyObject* o = PyList_GetItem(source, x);
2205         if (wxPySwigInstance_Check(o)) {
2206             wxPen*  pt;
2207             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2208                 delete temp;
2209                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2210                 return NULL;
2211             }
2212             temp[x] = pt;
2213         }
2214         else {
2215             delete temp;
2216             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2217             return NULL;
2218         }
2219     }
2220     return temp;
2221 }
2222
2223
2224 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2225     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2226     PyObject *o1, *o2;
2227
2228     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2229         return False;
2230
2231     if (isFast) {
2232         o1 = PySequence_Fast_GET_ITEM(source, 0);
2233         o2 = PySequence_Fast_GET_ITEM(source, 1);
2234     }
2235     else {
2236         o1 = PySequence_GetItem(source, 0);
2237         o2 = PySequence_GetItem(source, 1);
2238     }
2239
2240     *i1 = PyInt_AsLong(o1);
2241     *i2 = PyInt_AsLong(o2);
2242
2243     if (! isFast) {
2244         Py_DECREF(o1);
2245         Py_DECREF(o2);
2246     }
2247     return True;
2248 }
2249
2250
2251 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2252     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2253     PyObject *o1, *o2, *o3, *o4;
2254
2255     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2256         return False;
2257
2258     if (isFast) {
2259         o1 = PySequence_Fast_GET_ITEM(source, 0);
2260         o2 = PySequence_Fast_GET_ITEM(source, 1);
2261         o3 = PySequence_Fast_GET_ITEM(source, 2);
2262         o4 = PySequence_Fast_GET_ITEM(source, 3);
2263     }
2264     else {
2265         o1 = PySequence_GetItem(source, 0);
2266         o2 = PySequence_GetItem(source, 1);
2267         o3 = PySequence_GetItem(source, 2);
2268         o4 = PySequence_GetItem(source, 3);
2269     }
2270
2271     *i1 = PyInt_AsLong(o1);
2272     *i2 = PyInt_AsLong(o2);
2273     *i3 = PyInt_AsLong(o3);
2274     *i4 = PyInt_AsLong(o4);
2275
2276     if (! isFast) {
2277         Py_DECREF(o1);
2278         Py_DECREF(o2);
2279         Py_DECREF(o3);
2280         Py_DECREF(o4);
2281     }
2282     return True;
2283 }
2284
2285
2286 //----------------------------------------------------------------------
2287
2288 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2289 {
2290     void* ptr;
2291
2292     if (wxPySwigInstance_Check(source) &&
2293         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2294         return True;
2295
2296     PyErr_Clear();
2297     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2298         return True;
2299
2300     return False;
2301 }
2302
2303 bool wxSize_helper(PyObject* source, wxSize** obj)
2304 {
2305     if (source == Py_None) {
2306         **obj = wxSize(-1,-1);
2307         return True;
2308     }
2309     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2310 }
2311
2312
2313 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2314 {
2315     if (source == Py_None) {
2316         **obj = wxPoint(-1,-1);
2317         return True;
2318     }
2319     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2320 }
2321
2322
2323
2324 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2325
2326     if (source == Py_None) {
2327         **obj = wxRealPoint(-1,-1);
2328         return True;
2329     }
2330
2331     // If source is an object instance then it may already be the right type
2332     if (wxPySwigInstance_Check(source)) {
2333         wxRealPoint* ptr;
2334         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2335             goto error;
2336         *obj = ptr;
2337         return True;
2338     }
2339     // otherwise a 2-tuple of floats is expected
2340     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2341         PyObject* o1 = PySequence_GetItem(source, 0);
2342         PyObject* o2 = PySequence_GetItem(source, 1);
2343         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2344             Py_DECREF(o1);
2345             Py_DECREF(o2);
2346             goto error;
2347         }
2348         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2349         Py_DECREF(o1);
2350         Py_DECREF(o2);
2351         return True;
2352     }
2353
2354  error:
2355     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2356     return False;
2357 }
2358
2359
2360
2361 bool wxRect_helper(PyObject* source, wxRect** obj) {
2362
2363     if (source == Py_None) {
2364         **obj = wxRect(-1,-1,-1,-1);
2365         return True;
2366     }
2367
2368     // If source is an object instance then it may already be the right type
2369     if (wxPySwigInstance_Check(source)) {
2370         wxRect* ptr;
2371         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2372             goto error;
2373         *obj = ptr;
2374         return True;
2375     }
2376     // otherwise a 4-tuple of integers is expected
2377     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2378         PyObject* o1 = PySequence_GetItem(source, 0);
2379         PyObject* o2 = PySequence_GetItem(source, 1);
2380         PyObject* o3 = PySequence_GetItem(source, 2);
2381         PyObject* o4 = PySequence_GetItem(source, 3);
2382         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2383             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2384             Py_DECREF(o1);
2385             Py_DECREF(o2);
2386             Py_DECREF(o3);
2387             Py_DECREF(o4);
2388             goto error;
2389         }
2390         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2391                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2392         Py_DECREF(o1);
2393         Py_DECREF(o2);
2394         Py_DECREF(o3);
2395         Py_DECREF(o4);
2396         return True;
2397     }
2398
2399  error:
2400     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2401     return False;
2402 }
2403
2404
2405
2406 bool wxColour_helper(PyObject* source, wxColour** obj) {
2407
2408     if (source == Py_None) {
2409         **obj = wxNullColour;
2410         return True;
2411     }
2412
2413     // If source is an object instance then it may already be the right type
2414     if (wxPySwigInstance_Check(source)) {
2415         wxColour* ptr;
2416         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2417             goto error;
2418         *obj = ptr;
2419         return True;
2420     }
2421     // otherwise check for a string
2422     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2423         wxString spec = Py2wxString(source);
2424         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2425             long red, green, blue;
2426             red = green = blue = 0;
2427             spec.Mid(1,2).ToLong(&red,   16);
2428             spec.Mid(3,2).ToLong(&green, 16);
2429             spec.Mid(5,2).ToLong(&blue,  16);
2430
2431             **obj = wxColour(red, green, blue);
2432             return True;
2433         }
2434         else {                                       // it's a colour name
2435             **obj = wxColour(spec);
2436             return True;
2437         }
2438     }
2439     // last chance: 3-tuple of integers is expected
2440     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2441         PyObject* o1 = PySequence_GetItem(source, 0);
2442         PyObject* o2 = PySequence_GetItem(source, 1);
2443         PyObject* o3 = PySequence_GetItem(source, 2);
2444         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2445             Py_DECREF(o1);
2446             Py_DECREF(o2);
2447             Py_DECREF(o3);
2448             goto error;
2449         }
2450         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2451         Py_DECREF(o1);
2452         Py_DECREF(o2);
2453         Py_DECREF(o3);
2454         return True;
2455     }
2456
2457  error:
2458     PyErr_SetString(PyExc_TypeError,
2459                     "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
2460     return False;
2461 }
2462
2463
2464 bool wxColour_typecheck(PyObject* source) {
2465
2466     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2467         return True;
2468
2469     if (PyString_Check(source) || PyUnicode_Check(source))
2470         return True;
2471
2472     return False;
2473 }
2474
2475
2476
2477 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2478
2479     if (source == Py_None) {
2480         **obj = wxPoint2D(-1,-1);
2481         return True;
2482     }
2483
2484     // If source is an object instance then it may already be the right type
2485     if (wxPySwigInstance_Check(source)) {
2486         wxPoint2D* ptr;
2487         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2488             goto error;
2489         *obj = ptr;
2490         return True;
2491     }
2492     // otherwise a length-2 sequence of floats is expected
2493     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2494         PyObject* o1 = PySequence_GetItem(source, 0);
2495         PyObject* o2 = PySequence_GetItem(source, 1);
2496         // This should really check for floats, not numbers -- but that would break code.
2497         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2498             Py_DECREF(o1);
2499             Py_DECREF(o2);
2500             goto error;
2501         }
2502         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2503         Py_DECREF(o1);
2504         Py_DECREF(o2);
2505         return True;
2506     }
2507  error:
2508     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2D object.");
2509     return False;
2510 }
2511
2512
2513 //----------------------------------------------------------------------
2514
2515 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
2516
2517     PyObject* list = PyList_New(0);
2518     for (size_t i=0; i < arr.GetCount(); i++) {
2519 #if wxUSE_UNICODE
2520         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2521 #else
2522         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2523 #endif
2524         PyList_Append(list, str);
2525         Py_DECREF(str);
2526     }
2527     return list;
2528 }
2529
2530
2531 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2532
2533     PyObject* list = PyList_New(0);
2534     for (size_t i=0; i < arr.GetCount(); i++) {
2535         PyObject* number = PyInt_FromLong(arr[i]);
2536         PyList_Append(list, number);
2537         Py_DECREF(number);
2538     }
2539     return list;
2540 }
2541
2542
2543 //----------------------------------------------------------------------
2544 //----------------------------------------------------------------------
2545
2546
2547
2548