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 <gdk/gdk.h>
  27 #include <gdk/gdkx.h>
  28 #include <gtk/gtk.h>
  29 #include <gdk/gdkprivate.h>
  30 #include <wx/gtk/win_gtk.h>
  31 #define GetXWindow(wxwin)   GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
  32 #include <locale.h>
  33 #endif
  34
  35 #ifdef __WXX11__
  36 #include "wx/x11/privx.h"
  37 #define GetXWindow(wxwin)   ((Window)(wxwin)->GetHandle())
  38 #endif
  39
  40 #ifdef __WXMAC__
  41 #include <wx/mac/private.h>
  42 #endif
  43
  44 #include <wx/clipbrd.h>
  45 #include <wx/mimetype.h>
  46 #include <wx/image.h>
  47
  48 //----------------------------------------------------------------------
  49
  50 #if PYTHON_API_VERSION <= 1007 && wxUSE_UNICODE
  51 #error Python must support Unicode to use wxWindows Unicode
  52 #endif
  53
  54 //----------------------------------------------------------------------
  55
  56 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  57 bool wxPyDoCleanup = False;
  58 bool wxPyDoingCleanup = False;
  59
  60
  61 #ifdef WXP_WITH_THREAD
  62 struct wxPyThreadState {
  63     unsigned long  tid;
  64     PyThreadState* tstate;
  65
  66     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  67         : tid(_tid), tstate(_tstate) {}
  68 };
  69
  70 #include <wx/dynarray.h>
  71 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  72 #include <wx/arrimpl.cpp>
  73 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  74
  75 wxPyThreadStateArray* wxPyTStates = NULL;
  76 wxMutex*              wxPyTMutex = NULL;
  77 #endif
  78
  79
  80 static PyObject* wxPython_dict = NULL;
  81 static PyObject* wxPyAssertionError = NULL;
  82
  83 PyObject* wxPyPtrTypeMap = NULL;
  84
  85
  86 #ifdef __WXMSW__             // If building for win32...
  87 //----------------------------------------------------------------------
  88 // This gets run when the DLL is loaded.  We just need to save a handle.
  89 //----------------------------------------------------------------------
  90
  91 BOOL WINAPI DllMain(
  92     HINSTANCE   hinstDLL,    // handle to DLL module
  93     DWORD       fdwReason,   // reason for calling function
  94     LPVOID      lpvReserved  // reserved
  95    )
  96 {
  97     // If wxPython is embedded in another wxWindows app then
  98     // the inatance has already been set.
  99     if (! wxGetInstance())
 100         wxSetInstance(hinstDLL);
 101     return True;
 102 }
 103 #endif
 104
 105 //----------------------------------------------------------------------
 106 // Classes for implementing the wxp main application shell.
 107 //----------------------------------------------------------------------
 108
 109 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 110
 111
 112 wxPyApp::wxPyApp() {
 113     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 114     m_startupComplete = False;
 115 }
 116
 117
 118 wxPyApp::~wxPyApp() {
 119 }
 120
 121
 122 // This one isn't acutally called...  We fake it with _BootstrapApp
 123 bool wxPyApp::OnInit() {
 124     return False;
 125 }
 126
 127
 128 int  wxPyApp::MainLoop() {
 129     int retval = 0;
 130
 131     DeletePendingObjects();
 132     bool initialized = wxTopLevelWindows.GetCount() != 0;
 133     if (initialized) {
 134         if ( m_exitOnFrameDelete == Later ) {
 135             m_exitOnFrameDelete = Yes;
 136         }
 137
 138         retval = wxApp::MainLoop();
 139         OnExit();
 140     }
 141     return retval;
 142 }
 143
 144
 145 bool wxPyApp::OnInitGui() {
 146     bool rval=True;
 147     wxApp::OnInitGui();  // in this case always call the base class version
 148     bool blocked = wxPyBeginBlockThreads();
 149     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 150         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 151     wxPyEndBlockThreads(blocked);
 152     return rval;
 153 }
 154
 155
 156 int wxPyApp::OnExit() {
 157     int rval=0;
 158     bool blocked = wxPyBeginBlockThreads();
 159     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 160         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 161     wxPyEndBlockThreads(blocked);
 162     wxApp::OnExit();  // in this case always call the base class version
 163     return rval;
 164 }
 165
 166
 167 #ifdef __WXDEBUG__
 168 void wxPyApp::OnAssert(const wxChar *file,
 169                      int line,
 170                      const wxChar *cond,
 171                      const wxChar *msg) {
 172
 173     // if we're not fully initialized then just log the error
 174     if (! m_startupComplete) {
 175         wxString buf;
 176         buf.Alloc(4096);
 177         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 178                    file, line, cond);
 179         if (msg != NULL) {
 180             buf += wxT(": ");
 181             buf += msg;
 182         }
 183         wxLogDebug(buf);
 184         return;
 185     }
 186
 187     // If the OnAssert is overloaded in the Python class then call it...
 188     bool found;
 189     bool blocked = wxPyBeginBlockThreads();
 190     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 191         PyObject* fso = wx2PyString(file);
 192         PyObject* cso = wx2PyString(file);
 193         PyObject* mso;
 194         if (msg != NULL)
 195             mso = wx2PyString(file);
 196         else {
 197             mso = Py_None; Py_INCREF(Py_None);
 198         }
 199         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 200         Py_DECREF(fso);
 201         Py_DECREF(cso);
 202         Py_DECREF(mso);
 203     }
 204     wxPyEndBlockThreads(blocked);
 205
 206     // ...otherwise do our own thing with it
 207     if (! found) {
 208         // ignore it?
 209         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 210             return;
 211
 212         // turn it into a Python exception?
 213         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 214             wxString buf;
 215             buf.Alloc(4096);
 216             buf.Printf(wxT("C++ assertion \"%s\" failed in %s(%d)"), cond, file, line);
 217             if (msg != NULL) {
 218                 buf += wxT(": ");
 219                 buf += msg;
 220             }
 221
 222             // set the exception
 223             bool blocked = wxPyBeginBlockThreads();
 224             PyObject* s = wx2PyString(buf);
 225             PyErr_SetObject(wxPyAssertionError, s);
 226             Py_DECREF(s);
 227             wxPyEndBlockThreads(blocked);
 228
 229             // Now when control returns to whatever API wrapper was called from
 230             // Python it should detect that an exception is set and will return
 231             // NULL, signalling the exception to Python.
 232         }
 233
 234         // Send it to the normal log destination, but only if
 235         // not _DIALOG because it will call this too
 236         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 237             wxString buf;
 238             buf.Alloc(4096);
 239             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 240                        file, line, cond);
 241             if (msg != NULL) {
 242                 buf += wxT(": ");
 243                 buf += msg;
 244             }
 245             wxLogDebug(buf);
 246         }
 247
 248         // do the normal wx assert dialog?
 249         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 250             wxApp::OnAssert(file, line, cond, msg);
 251     }
 252 }
 253 #endif
 254
 255     // For catching Apple Events
 256 void wxPyApp::MacOpenFile(const wxString &fileName)
 257 {
 258     bool blocked = wxPyBeginBlockThreads();
 259     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 260         PyObject* s = wx2PyString(fileName);
 261         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 262         Py_DECREF(s);
 263     }
 264     wxPyEndBlockThreads(blocked);
 265 }
 266
 267 void wxPyApp::MacPrintFile(const wxString &fileName)
 268 {
 269     bool blocked = wxPyBeginBlockThreads();
 270     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 271         PyObject* s = wx2PyString(fileName);
 272         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 273         Py_DECREF(s);
 274     }
 275     wxPyEndBlockThreads(blocked);
 276 }
 277
 278 void wxPyApp::MacNewFile()
 279 {
 280     bool blocked = wxPyBeginBlockThreads();
 281     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 282         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 283     wxPyEndBlockThreads(blocked);
 284 }
 285
 286 void wxPyApp::MacReopenApp()
 287 {
 288     bool blocked = wxPyBeginBlockThreads();
 289     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 290         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 291     wxPyEndBlockThreads(blocked);
 292 }
 293
 294
 295 /*static*/
 296 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 297 #ifdef __WXMAC__
 298     return s_macSupportPCMenuShortcuts;
 299 #else
 300     return 0;
 301 #endif
 302 }
 303
 304 /*static*/
 305 long wxPyApp::GetMacAboutMenuItemId() {
 306 #ifdef __WXMAC__
 307     return s_macAboutMenuItemId;
 308 #else
 309     return 0;
 310 #endif
 311 }
 312
 313 /*static*/
 314 long wxPyApp::GetMacPreferencesMenuItemId() {
 315 #ifdef __WXMAC__
 316     return s_macPreferencesMenuItemId;
 317 #else
 318     return 0;
 319 #endif
 320 }
 321
 322 /*static*/
 323 long wxPyApp::GetMacExitMenuItemId() {
 324 #ifdef __WXMAC__
 325     return s_macExitMenuItemId;
 326 #else
 327     return 0;
 328 #endif
 329 }
 330
 331 /*static*/
 332 wxString wxPyApp::GetMacHelpMenuTitleName() {
 333 #ifdef __WXMAC__
 334     return s_macHelpMenuTitleName;
 335 #else
 336     return wxEmptyString;
 337 #endif
 338 }
 339
 340 /*static*/
 341 void wxPyApp::SetMacSupportPCMenuShortcuts(bool val) {
 342 #ifdef __WXMAC__
 343     s_macSupportPCMenuShortcuts = val;
 344 #endif
 345 }
 346
 347 /*static*/
 348 void wxPyApp::SetMacAboutMenuItemId(long val) {
 349 #ifdef __WXMAC__
 350     s_macAboutMenuItemId = val;
 351 #endif
 352 }
 353
 354 /*static*/
 355 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 356 #ifdef __WXMAC__
 357     s_macPreferencesMenuItemId = val;
 358 #endif
 359 }
 360
 361 /*static*/
 362 void wxPyApp::SetMacExitMenuItemId(long val) {
 363 #ifdef __WXMAC__
 364     s_macExitMenuItemId = val;
 365 #endif
 366 }
 367
 368 /*static*/
 369 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 370 #ifdef __WXMAC__
 371     s_macHelpMenuTitleName = val;
 372 #endif
 373 }
 374
 375
 376 // This finishes the initialization of wxWindows and then calls the OnInit
 377 // that should be present in the derived (Python) class.
 378 void wxPyApp::_BootstrapApp()
 379 {
 380     bool        result;
 381     PyObject*   retval = NULL;
 382     PyObject*   pyint  = NULL;
 383
 384
 385     // Get any command-line args passed to this program from the sys module
 386     int    argc = 0;
 387     char** argv = NULL;
 388     bool blocked = wxPyBeginBlockThreads();
 389     PyObject* sysargv = PySys_GetObject("argv");
 390     if (sysargv != NULL) {
 391         argc = PyList_Size(sysargv);
 392         argv = new char*[argc+1];
 393         int x;
 394         for(x=0; x<argc; x++) {
 395             PyObject *pyArg = PyList_GetItem(sysargv, x);
 396             argv[x] = PyString_AsString(pyArg);
 397         }
 398         argv[argc] = NULL;
 399     }
 400     wxPyEndBlockThreads(blocked);
 401
 402     // Initialize wxWidgets
 403     result = wxEntryStart(argc, argv);
 404     delete [] argv;
 405
 406     blocked = wxPyBeginBlockThreads();
 407     if (! result)  {
 408         PyErr_SetString(PyExc_SystemError,
 409                         "wxEntryStart failed, unable to initialize wxWidgets!"
 410 #ifdef __WXGTK__
 411                         "  (Is DISPLAY set properly?)"
 412 #endif
 413             );
 414         goto error;
 415     }
 416
 417     // On wxGTK the locale will be changed to match the system settings, but
 418     // Python needs to have LC_NUMERIC set to "C" in order for the floating
 419     // point conversions and such to work right.
 420 #ifdef __WXGTK__
 421     setlocale(LC_NUMERIC, "C");
 422 #endif
 423
 424     // The stock objects were all NULL when they were loaded into
 425     // SWIG generated proxies, so re-init those now...
 426     wxPy_ReinitStockObjects(3);
 427
 428     // It's now ok to generate exceptions for assertion errors.
 429     wxPythonApp->SetStartupComplete(True);
 430
 431     // Call the Python wxApp's OnInit function
 432     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 433
 434         PyObject* method = m_myInst.GetLastFound();
 435         PyObject* argTuple = PyTuple_New(0);
 436         retval = PyEval_CallObject(method, argTuple);
 437         Py_DECREF(argTuple);
 438         Py_DECREF(method);
 439         if (retval == NULL)
 440             goto error;
 441
 442         pyint = PyNumber_Int(retval);
 443         if (! pyint) {
 444             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 445             goto error;
 446         }
 447         result = PyInt_AS_LONG(pyint);
 448     }
 449     else {
 450         // Is it okay if there is no OnInit?  Probably so...
 451         result = True;
 452     }
 453
 454     if (! result) {
 455         PyErr_SetString(PyExc_SystemExit, "OnInit returned False, exiting...");
 456     }
 457
 458  error:
 459     Py_XDECREF(retval);
 460     Py_XDECREF(pyint);
 461
 462     wxPyEndBlockThreads(blocked);
 463 };
 464
 465 //---------------------------------------------------------------------
 466 //----------------------------------------------------------------------
 467
 468
 469 #if 0
 470 static char* wxPyCopyCString(const wxChar* src)
 471 {
 472     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 473     size_t len = strlen(buff);
 474     char*  dest = new char[len+1];
 475     strcpy(dest, buff);
 476     return dest;
 477 }
 478
 479 #if wxUSE_UNICODE
 480 static char* wxPyCopyCString(const char* src)   // we need a char version too
 481 {
 482     size_t len = strlen(src);
 483     char*  dest = new char[len+1];
 484     strcpy(dest, src);
 485     return dest;
 486 }
 487 #endif
 488
 489 static wxChar* wxPyCopyWString(const char *src)
 490 {
 491     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 492     wxString str(src, *wxConvCurrent);
 493     return copystring(str);
 494 }
 495
 496 #if wxUSE_UNICODE
 497 static wxChar* wxPyCopyWString(const wxChar *src)
 498 {
 499     return copystring(src);
 500 }
 501 #endif
 502 #endif
 503
 504
 505 inline const char* dropwx(const char* name) {
 506     if (name[0] == 'w' && name[1] == 'x')
 507         return name+2;
 508     else
 509         return name;
 510 }
 511
 512 //----------------------------------------------------------------------
 513
 514 // This function is called when the wx._core_ module is imported to do some
 515 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 516 // wxPyApp::_BootstrapApp
 517 void __wxPyPreStart(PyObject* moduleDict)
 518 {
 519
 520 #ifdef __WXMSW__
 521 //    wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 522 #endif
 523
 524 #ifdef WXP_WITH_THREAD
 525     PyEval_InitThreads();
 526     wxPyTStates = new wxPyThreadStateArray;
 527     wxPyTMutex = new wxMutex;
 528
 529     // Save the current (main) thread state in our array
 530     PyThreadState* tstate = wxPyBeginAllowThreads();
 531     wxPyEndAllowThreads(tstate);
 532 #endif
 533
 534     // Ensure that the build options in the DLL (or whatever) match this build
 535     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 536
 537     // Init the stock objects to a non-NULL value so SWIG doesn't create them as None
 538     wxPy_ReinitStockObjects(1);
 539
 540     wxInitAllImageHandlers();
 541 }
 542
 543
 544
 545 void __wxPyCleanup() {
 546     wxPyDoingCleanup = True;
 547     if (wxPyDoCleanup) {
 548         wxPyDoCleanup = False;
 549         wxEntryCleanup();
 550     }
 551 #ifdef WXP_WITH_THREAD
 552     delete wxPyTMutex;
 553     wxPyTMutex = NULL;
 554     wxPyTStates->Empty();
 555     delete wxPyTStates;
 556     wxPyTStates = NULL;
 557 #endif
 558 }
 559
 560
 561 // Save a reference to the dictionary of the wx._core module, and inject
 562 // a few more things into it.
 563 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 564 {
 565
 566     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 567         return NULL;
 568
 569     if (!PyDict_Check(wxPython_dict)) {
 570         PyErr_SetString(PyExc_TypeError, "_wxPySetDictionary must have dictionary object!");
 571         return NULL;
 572     }
 573
 574     if (! wxPyPtrTypeMap)
 575         wxPyPtrTypeMap = PyDict_New();
 576     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 577
 578     // Create an exception object to use for wxASSERTions
 579     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 580                                             PyExc_AssertionError, NULL);
 581     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 582
 583
 584 #ifdef __WXMOTIF__
 585 #define wxPlatform "__WXMOTIF__"
 586 #define wxPlatName "wxMotif"
 587 #endif
 588 #ifdef __WXX11__
 589 #define wxPlatform "__WXX11__"
 590 #define wxPlatName "wxX11"
 591 #endif
 592 #ifdef __WXGTK__
 593 #define wxPlatform "__WXGTK__"
 594 #define wxPlatName "wxGTK"
 595 #endif
 596 #ifdef __WXMSW__
 597 #define wxPlatform "__WXMSW__"
 598 #define wxPlatName "wxMSW"
 599 #endif
 600 #ifdef __WXMAC__
 601 #define wxPlatform "__WXMAC__"
 602 #define wxPlatName "wxMac"
 603 #endif
 604
 605 #ifdef __WXDEBUG__
 606     int wxdebug = 1;
 607 #else
 608     int wxdebug = 0;
 609 #endif
 610
 611     // These should be deprecated in favor of the PlatformInfo tuple built below...
 612     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 613     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 614     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 615
 616
 617     PyObject* PlatInfo = PyList_New(0);
 618     PyObject* obj;
 619
 620 #define _AddInfoString(st) \
 621     obj = PyString_FromString(st); \
 622     PyList_Append(PlatInfo, obj); \
 623     Py_DECREF(obj)
 624
 625     _AddInfoString(wxPlatform);
 626     _AddInfoString(wxPlatName);
 627 #if wxUSE_UNICODE
 628     _AddInfoString("unicode");
 629 #else
 630     _AddInfoString("ascii");
 631 #endif
 632 #ifdef __WXGTK__
 633 #ifdef __WXGTK20__
 634     _AddInfoString("gtk2");
 635 #else
 636     _AddInfoString("gtk1");
 637 #endif
 638 #endif
 639
 640 #undef _AddInfoString
 641
 642     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 643     Py_DECREF(PlatInfo);
 644     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 645
 646     RETURN_NONE();
 647 }
 648
 649
 650 //---------------------------------------------------------------------------
 651
 652 // Python's PyInstance_Check does not return True for instances of new-style
 653 // classes.  This should get close enough for both new and old classes but I
 654 // should re-evaluate the need for doing instance checks...
 655 bool wxPyInstance_Check(PyObject* obj) {
 656     return PyObject_HasAttrString(obj, "__class__") != 0;
 657 }
 658
 659
 660 // This one checks if the object is an instance of a SWIG proxy class (it has
 661 // a .this attribute)
 662 bool wxPySwigInstance_Check(PyObject* obj) {
 663     return PyObject_HasAttrString(obj, "this") != 0;
 664 }
 665
 666 //---------------------------------------------------------------------------
 667
 668 // The stock objects are no longer created when the wx._core_ module is
 669 // imported, but only after the app object has been created.  The
 670 // wxPy_ReinitStockObjects function will be called 3 times to pass the stock
 671 // objects though various stages of evolution:
 672 //
 673 //   pass 1: Set all the pointers to a non-NULL value so the Python proxy
 674 //           object will be created (otherwise SWIG will just use None.)
 675 //
 676 //   pass 2: After the module has been imported and the python proxys have
 677 //           been created, then set the __class__ to be _wxPyUnbornObject so
 678 //           it will catch any access to the object and will raise an exception.
 679 //
 680 //   pass 3: Finally, from BootstrapApp patch things up so the stock objects
 681 //           can be used.
 682
 683
 684 PyObject* __wxPyFixStockObjects(PyObject* /* self */, PyObject* args)
 685 {
 686     wxPy_ReinitStockObjects(2);
 687     RETURN_NONE();
 688 }
 689
 690
 691 static void rsoPass2(const char* name)
 692 {
 693     static PyObject* unbornObjectClass = NULL;
 694     PyObject* obj;
 695
 696     if (unbornObjectClass == NULL) {
 697         unbornObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyUnbornObject");
 698         Py_INCREF(unbornObjectClass);
 699     }
 700
 701     // Find the object instance
 702     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 703     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 704     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 705
 706     // Change its class
 707     PyObject_SetAttrString(obj, "__class__",  unbornObjectClass);
 708
 709 }
 710
 711 static void rsoPass3(const char* name, const char* classname, void* ptr)
 712 {
 713     PyObject* obj;
 714     PyObject* classobj;
 715     PyObject* ptrobj;
 716
 717     // Find the object instance
 718     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 719     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 720     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 721
 722     // Find the class object and put it back in the instance
 723     classobj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(classname));
 724     wxCHECK_RET(classobj != NULL, wxT("Unable to find stock class object"));
 725     PyObject_SetAttrString(obj, "__class__",  classobj);
 726
 727     // Rebuild the .this swigified pointer with the new value of the C++ pointer
 728     ptrobj = wxPyMakeSwigPtr(ptr, wxString(classname, *wxConvCurrent));
 729     PyObject_SetAttrString(obj, "this", ptrobj);
 730     Py_DECREF(ptrobj);
 731 }
 732
 733
 734
 735 void wxPy_ReinitStockObjects(int pass)
 736 {
 737
 738     // If there is already an App object then wxPython is probably embedded in
 739     // a wx C++ application, so there is no need to do all this.
 740     static bool embedded = false;
 741     if ((pass == 1 || pass == 2) && wxTheApp) {
 742         embedded = true;
 743         return;
 744     }
 745     if (pass == 3 && embedded)
 746         return;
 747
 748
 749 #define REINITOBJ(name, classname) \
 750     if (pass == 1) { name = (classname*)0xC0C0C0C0; } \
 751     else if (pass == 2) { rsoPass2(#name); } \
 752     else if (pass == 3) { rsoPass3(#name, #classname, (void*)name); }
 753
 754
 755 #define REINITOBJ2(name, classname) \
 756     if (pass == 1) { } \
 757     else if (pass == 2) { rsoPass2(#name); } \
 758     else if (pass == 3) { rsoPass3(#name, #classname, (void*)&name); }
 759
 760
 761     REINITOBJ(wxNORMAL_FONT, wxFont);
 762     REINITOBJ(wxSMALL_FONT, wxFont);
 763     REINITOBJ(wxITALIC_FONT, wxFont);
 764     REINITOBJ(wxSWISS_FONT, wxFont);
 765
 766     REINITOBJ(wxRED_PEN, wxPen);
 767     REINITOBJ(wxCYAN_PEN, wxPen);
 768     REINITOBJ(wxGREEN_PEN, wxPen);
 769     REINITOBJ(wxBLACK_PEN, wxPen);
 770     REINITOBJ(wxWHITE_PEN, wxPen);
 771     REINITOBJ(wxTRANSPARENT_PEN, wxPen);
 772     REINITOBJ(wxBLACK_DASHED_PEN, wxPen);
 773     REINITOBJ(wxGREY_PEN, wxPen);
 774     REINITOBJ(wxMEDIUM_GREY_PEN, wxPen);
 775     REINITOBJ(wxLIGHT_GREY_PEN, wxPen);
 776
 777     REINITOBJ(wxBLUE_BRUSH, wxBrush);
 778     REINITOBJ(wxGREEN_BRUSH, wxBrush);
 779     REINITOBJ(wxWHITE_BRUSH, wxBrush);
 780     REINITOBJ(wxBLACK_BRUSH, wxBrush);
 781     REINITOBJ(wxTRANSPARENT_BRUSH, wxBrush);
 782     REINITOBJ(wxCYAN_BRUSH, wxBrush);
 783     REINITOBJ(wxRED_BRUSH, wxBrush);
 784     REINITOBJ(wxGREY_BRUSH, wxBrush);
 785     REINITOBJ(wxMEDIUM_GREY_BRUSH, wxBrush);
 786     REINITOBJ(wxLIGHT_GREY_BRUSH, wxBrush);
 787
 788     REINITOBJ(wxBLACK, wxColour);
 789     REINITOBJ(wxWHITE, wxColour);
 790     REINITOBJ(wxRED, wxColour);
 791     REINITOBJ(wxBLUE, wxColour);
 792     REINITOBJ(wxGREEN, wxColour);
 793     REINITOBJ(wxCYAN, wxColour);
 794     REINITOBJ(wxLIGHT_GREY, wxColour);
 795
 796     REINITOBJ(wxSTANDARD_CURSOR, wxCursor);
 797     REINITOBJ(wxHOURGLASS_CURSOR, wxCursor);
 798     REINITOBJ(wxCROSS_CURSOR, wxCursor);
 799
 800     REINITOBJ2(wxNullBitmap, wxBitmap);
 801     REINITOBJ2(wxNullIcon, wxIcon);
 802     REINITOBJ2(wxNullCursor, wxCursor);
 803     REINITOBJ2(wxNullPen, wxPen);
 804     REINITOBJ2(wxNullBrush, wxBrush);
 805     REINITOBJ2(wxNullPalette, wxPalette);
 806     REINITOBJ2(wxNullFont, wxFont);
 807     REINITOBJ2(wxNullColour, wxColour);
 808
 809     REINITOBJ(wxTheFontList, wxFontList);
 810     REINITOBJ(wxThePenList, wxPenList);
 811     REINITOBJ(wxTheBrushList, wxBrushList);
 812     REINITOBJ(wxTheColourDatabase, wxColourDatabase);
 813
 814
 815     REINITOBJ(wxTheClipboard, wxClipboard);
 816     REINITOBJ2(wxDefaultValidator, wxValidator);
 817     REINITOBJ2(wxNullImage, wxImage);
 818     REINITOBJ2(wxNullAcceleratorTable, wxAcceleratorTable);
 819
 820 #undef REINITOBJ
 821 #undef REINITOBJ2
 822 }
 823
 824 //---------------------------------------------------------------------------
 825
 826 void wxPyClientData_dtor(wxPyClientData* self) {
 827     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 828                                         // may have already garbage collected the object...
 829         bool blocked = wxPyBeginBlockThreads();
 830         Py_DECREF(self->m_obj);
 831         self->m_obj = NULL;
 832         wxPyEndBlockThreads(blocked);
 833     }
 834 }
 835
 836 void wxPyUserData_dtor(wxPyUserData* self) {
 837     if (! wxPyDoingCleanup) {
 838         bool blocked = wxPyBeginBlockThreads();
 839         Py_DECREF(self->m_obj);
 840         self->m_obj = NULL;
 841         wxPyEndBlockThreads(blocked);
 842     }
 843 }
 844
 845
 846 // This is called when an OOR controled object is being destroyed.  Although
 847 // the C++ object is going away there is no way to force the Python object
 848 // (and all references to it) to die too.  This causes problems (crashes) in
 849 // wxPython when a python shadow object attempts to call a C++ method using
 850 // the now bogus pointer... So to try and prevent this we'll do a little black
 851 // magic and change the class of the python instance to a class that will
 852 // raise an exception for any attempt to call methods with it.  See
 853 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 854 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 855
 856     static PyObject* deadObjectClass = NULL;
 857
 858     bool blocked = wxPyBeginBlockThreads();
 859     if (deadObjectClass == NULL) {
 860         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 861         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 862         // will lead to a deadlock when it tries to aquire the GIL again.
 863         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 864         Py_INCREF(deadObjectClass);
 865     }
 866
 867
 868     // Only if there is more than one reference to the object
 869     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 ) {
 870         // bool isInstance = wxPyInstance_Check(self->m_obj);
 871         // TODO same here
 872         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 873
 874         // Call __del__, if there is one.
 875         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 876         if (func) {
 877             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 878             Py_XDECREF(rv);
 879             Py_DECREF(func);
 880         }
 881         if (PyErr_Occurred())
 882             PyErr_Clear();      // just ignore it for now
 883
 884
 885         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 886         if (dict) {
 887             // Clear the instance's dictionary
 888             PyDict_Clear(dict);
 889
 890             // put the name of the old class into the instance, and then reset the
 891             // class to be the dead class.
 892             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 893             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 894             PyDict_SetItemString(dict, "_name", name);
 895             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 896             //Py_INCREF(deadObjectClass);
 897             Py_DECREF(klass);
 898             Py_DECREF(name);
 899         }
 900     }
 901
 902     // m_obj is DECREF'd in the base class dtor...
 903     wxPyEndBlockThreads(blocked);
 904 }
 905
 906
 907 //---------------------------------------------------------------------------
 908 // Stuff used by OOR to find the right wxPython class type to return and to
 909 // build it.
 910
 911
 912 // The pointer type map is used when the "pointer" type name generated by SWIG
 913 // is not the same as the shadow class name, for example wxPyTreeCtrl
 914 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 915 // so we'll just make it a Python dictionary in the wx module's namespace.
 916 // (See __wxSetDictionary)
 917 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 918     if (! wxPyPtrTypeMap)
 919         wxPyPtrTypeMap = PyDict_New();
 920     PyDict_SetItemString(wxPyPtrTypeMap,
 921                          (char*)commonName,
 922                          PyString_FromString((char*)ptrName));
 923 }
 924
 925
 926
 927
 928 PyObject*  wxPyMake_wxObject(wxObject* source, bool checkEvtHandler) {
 929     PyObject* target = NULL;
 930     bool      isEvtHandler = False;
 931
 932     if (source) {
 933         // If it's derived from wxEvtHandler then there may
 934         // already be a pointer to a Python object that we can use
 935         // in the OOR data.
 936         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 937             isEvtHandler = True;
 938             wxEvtHandler* eh = (wxEvtHandler*)source;
 939             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 940             if (data) {
 941                 target = data->m_obj;
 942                 if (target)
 943                     Py_INCREF(target);
 944             }
 945         }
 946
 947         if (! target) {
 948             // Otherwise make it the old fashioned way by making a new shadow
 949             // object and putting this pointer in it.  Look up the class
 950             // heirarchy until we find a class name that is located in the
 951             // python module.
 952             const wxClassInfo* info   = source->GetClassInfo();
 953             wxString           name   = info->GetClassName();
 954             bool               exists = wxPyCheckSwigType(name);
 955             while (info && !exists) {
 956                 info = info->GetBaseClass1();
 957                 name = info->GetClassName();
 958                 exists = wxPyCheckSwigType(name);
 959             }
 960             if (info) {
 961                 target = wxPyConstructObject((void*)source, name, False);
 962                 if (target && isEvtHandler)
 963                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
 964             } else {
 965                 wxString msg(wxT("wxPython class not found for "));
 966                 msg += source->GetClassInfo()->GetClassName();
 967                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
 968                 target = NULL;
 969             }
 970         }
 971     } else {  // source was NULL so return None.
 972         Py_INCREF(Py_None); target = Py_None;
 973     }
 974     return target;
 975 }
 976
 977
 978 PyObject*  wxPyMake_wxSizer(wxSizer* source) {
 979     PyObject* target = NULL;
 980
 981     if (source && wxIsKindOf(source, wxSizer)) {
 982         // If it's derived from wxSizer then there may already be a pointer to
 983         // a Python object that we can use in the OOR data.
 984         wxSizer* sz = (wxSizer*)source;
 985         wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
 986         if (data) {
 987             target = data->m_obj;
 988             if (target)
 989                 Py_INCREF(target);
 990         }
 991     }
 992     if (! target) {
 993         target = wxPyMake_wxObject(source, False);
 994         if (target != Py_None)
 995             ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
 996     }
 997     return target;
 998 }
 999
1000
1001 //---------------------------------------------------------------------------
1002
1003
1004 #ifdef WXP_WITH_THREAD
1005 inline
1006 unsigned long wxPyGetCurrentThreadId() {
1007     return wxThread::GetCurrentId();
1008 }
1009
1010 static wxPyThreadState gs_shutdownTState;
1011
1012 static
1013 wxPyThreadState* wxPyGetThreadState() {
1014     if (wxPyTMutex == NULL) // Python is shutting down...
1015         return &gs_shutdownTState;
1016
1017     unsigned long ctid = wxPyGetCurrentThreadId();
1018     wxPyThreadState* tstate = NULL;
1019
1020     wxPyTMutex->Lock();
1021     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1022         wxPyThreadState& info = wxPyTStates->Item(i);
1023         if (info.tid == ctid) {
1024             tstate = &info;
1025             break;
1026         }
1027     }
1028     wxPyTMutex->Unlock();
1029     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
1030     return tstate;
1031 }
1032
1033
1034 static
1035 void wxPySaveThreadState(PyThreadState* tstate) {
1036     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
1037         gs_shutdownTState.tstate = tstate;
1038         return;
1039     }
1040     unsigned long ctid = wxPyGetCurrentThreadId();
1041     wxPyTMutex->Lock();
1042     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1043         wxPyThreadState& info = wxPyTStates->Item(i);
1044         if (info.tid == ctid) {
1045 #if 0
1046             if (info.tstate != tstate)
1047                 wxLogMessage("*** tstate mismatch!???");
1048 #endif
1049             // info.tstate = tstate;    *** DO NOT update existing ones???
1050             // Normally it will never change, but apparently COM callbacks
1051             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
1052             // tstate which will then be garbage the next time we try to use
1053             // it...
1054             wxPyTMutex->Unlock();
1055             return;
1056         }
1057     }
1058     // not found, so add it...
1059     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
1060     wxPyTMutex->Unlock();
1061 }
1062
1063 #endif
1064
1065
1066
1067 // Calls from Python to wxWindows code are wrapped in calls to these
1068 // functions:
1069
1070 PyThreadState* wxPyBeginAllowThreads() {
1071 #ifdef WXP_WITH_THREAD
1072     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1073     wxPySaveThreadState(saved);
1074     return saved;
1075 #else
1076     return NULL;
1077 #endif
1078 }
1079
1080 void wxPyEndAllowThreads(PyThreadState* saved) {
1081 #ifdef WXP_WITH_THREAD
1082     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1083 #endif
1084 }
1085
1086
1087
1088 // Calls from wxWindows back to Python code, or even any PyObject
1089 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1090
1091 bool wxPyBeginBlockThreads() {
1092 #ifdef WXP_WITH_THREAD
1093     // This works in for 2.3, maybe a good alternative to find the needed tstate?
1094     // PyThreadState *check = PyGILState_GetThisThreadState();
1095
1096     PyThreadState *current = _PyThreadState_Current;
1097
1098     // Only block if there wasn't already a tstate, or if the current one is
1099     // not the one we are wanting to change to.  This should prevent deadlock
1100     // if there are nested calls to wxPyBeginBlockThreads
1101     bool blocked = false;
1102     wxPyThreadState* tstate = wxPyGetThreadState();
1103     if (current != tstate->tstate) {
1104         PyEval_RestoreThread(tstate->tstate);
1105         blocked = true;
1106     }
1107     return blocked;
1108 #endif
1109 }
1110
1111
1112 void wxPyEndBlockThreads(bool blocked) {
1113 #ifdef WXP_WITH_THREAD
1114     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1115     // The value of blocked passed in needs to be the same as that returned
1116     // from wxPyBeginBlockThreads at the same nesting level.
1117     if ( blocked ) {
1118         PyEval_SaveThread();
1119     }
1120 #endif
1121 }
1122
1123
1124 //---------------------------------------------------------------------------
1125 // wxPyInputStream and wxPyCBInputStream methods
1126
1127
1128 void wxPyInputStream::close() {
1129     /* do nothing for now */
1130 }
1131
1132 void wxPyInputStream::flush() {
1133     /* do nothing for now */
1134 }
1135
1136 bool wxPyInputStream::eof() {
1137     if (m_wxis)
1138         return m_wxis->Eof();
1139     else
1140         return True;
1141 }
1142
1143 wxPyInputStream::~wxPyInputStream() {
1144     /* do nothing */
1145 }
1146
1147
1148
1149
1150 PyObject* wxPyInputStream::read(int size) {
1151     PyObject* obj = NULL;
1152     wxMemoryBuffer buf;
1153     const int BUFSIZE = 1024;
1154
1155     // check if we have a real wxInputStream to work with
1156     if (!m_wxis) {
1157         bool blocked = wxPyBeginBlockThreads();
1158         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1159         wxPyEndBlockThreads(blocked);
1160         return NULL;
1161     }
1162
1163     if (size < 0) {
1164         // read while bytes are available on the stream
1165         while ( m_wxis->CanRead() ) {
1166             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1167             buf.UngetAppendBuf(m_wxis->LastRead());
1168         }
1169
1170     } else {  // Read only size number of characters
1171         m_wxis->Read(buf.GetWriteBuf(size), size);
1172         buf.UngetWriteBuf(m_wxis->LastRead());
1173     }
1174
1175     // error check
1176     bool blocked = wxPyBeginBlockThreads();
1177     wxStreamError err = m_wxis->GetLastError();
1178     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1179         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1180     }
1181     else {
1182         // We use only strings for the streams, not unicode
1183         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1184     }
1185     wxPyEndBlockThreads(blocked);
1186     return obj;
1187 }
1188
1189
1190 PyObject* wxPyInputStream::readline(int size) {
1191     PyObject* obj = NULL;
1192     wxMemoryBuffer buf;
1193     int i;
1194     char ch;
1195
1196     // check if we have a real wxInputStream to work with
1197     if (!m_wxis) {
1198         bool blocked = wxPyBeginBlockThreads();
1199         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1200         wxPyEndBlockThreads(blocked);
1201         return NULL;
1202     }
1203
1204     // read until \n or byte limit reached
1205     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1206         ch = m_wxis->GetC();
1207         buf.AppendByte(ch);
1208     }
1209
1210     // errorcheck
1211     bool blocked = wxPyBeginBlockThreads();
1212     wxStreamError err = m_wxis->GetLastError();
1213     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1214         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1215     }
1216     else {
1217         // We use only strings for the streams, not unicode
1218         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1219     }
1220     wxPyEndBlockThreads(blocked);
1221     return obj;
1222 }
1223
1224
1225 PyObject* wxPyInputStream::readlines(int sizehint) {
1226     PyObject* pylist;
1227
1228     // check if we have a real wxInputStream to work with
1229     if (!m_wxis) {
1230         bool blocked = wxPyBeginBlockThreads();
1231         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1232         wxPyEndBlockThreads(blocked);
1233         return NULL;
1234     }
1235
1236     // init list
1237     bool blocked = wxPyBeginBlockThreads();
1238     pylist = PyList_New(0);
1239     wxPyEndBlockThreads(blocked);
1240
1241     if (!pylist) {
1242         bool blocked = wxPyBeginBlockThreads();
1243         PyErr_NoMemory();
1244         wxPyEndBlockThreads(blocked);
1245         return NULL;
1246     }
1247
1248     // read sizehint bytes or until EOF
1249     int i;
1250     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1251         PyObject* s = this->readline();
1252         if (s == NULL) {
1253             bool blocked = wxPyBeginBlockThreads();
1254             Py_DECREF(pylist);
1255             wxPyEndBlockThreads(blocked);
1256             return NULL;
1257         }
1258         bool blocked = wxPyBeginBlockThreads();
1259         PyList_Append(pylist, s);
1260         i += PyString_Size(s);
1261         wxPyEndBlockThreads(blocked);
1262     }
1263
1264     // error check
1265     wxStreamError err = m_wxis->GetLastError();
1266     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1267         bool blocked = wxPyBeginBlockThreads();
1268         Py_DECREF(pylist);
1269         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1270         wxPyEndBlockThreads(blocked);
1271         return NULL;
1272     }
1273
1274     return pylist;
1275 }
1276
1277
1278 void wxPyInputStream::seek(int offset, int whence) {
1279     if (m_wxis)
1280         m_wxis->SeekI(offset, wxSeekMode(whence));
1281 }
1282
1283 int wxPyInputStream::tell(){
1284     if (m_wxis)
1285         return m_wxis->TellI();
1286     else return 0;
1287 }
1288
1289
1290
1291
1292 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1293     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1294 {}
1295
1296
1297 wxPyCBInputStream::~wxPyCBInputStream() {
1298     bool blocked;
1299     if (m_block) blocked = wxPyBeginBlockThreads();
1300     Py_XDECREF(m_read);
1301     Py_XDECREF(m_seek);
1302     Py_XDECREF(m_tell);
1303     if (m_block) wxPyEndBlockThreads(blocked);
1304 }
1305
1306
1307 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1308     bool blocked;
1309     if (block) blocked = wxPyBeginBlockThreads();
1310
1311     PyObject* read = getMethod(py, "read");
1312     PyObject* seek = getMethod(py, "seek");
1313     PyObject* tell = getMethod(py, "tell");
1314
1315     if (!read) {
1316         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1317         Py_XDECREF(read);
1318         Py_XDECREF(seek);
1319         Py_XDECREF(tell);
1320         if (block) wxPyEndBlockThreads(blocked);
1321         return NULL;
1322     }
1323
1324     if (block) wxPyEndBlockThreads(blocked);
1325     return new wxPyCBInputStream(read, seek, tell, block);
1326 }
1327
1328
1329 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1330     return wxPyCBInputStream::create(py, block);
1331 }
1332
1333 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1334     if (!PyObject_HasAttrString(py, name))
1335         return NULL;
1336     PyObject* o = PyObject_GetAttrString(py, name);
1337     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1338         Py_DECREF(o);
1339         return NULL;
1340     }
1341     return o;
1342 }
1343
1344
1345 size_t wxPyCBInputStream::GetSize() const {
1346     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1347     if (m_seek && m_tell) {
1348         off_t temp = self->OnSysTell();
1349         off_t ret = self->OnSysSeek(0, wxFromEnd);
1350         self->OnSysSeek(temp, wxFromStart);
1351         return ret;
1352     }
1353     else
1354         return 0;
1355 }
1356
1357
1358 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1359     if (bufsize == 0)
1360         return 0;
1361
1362     bool blocked = wxPyBeginBlockThreads();
1363     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1364     PyObject* result = PyEval_CallObject(m_read, arglist);
1365     Py_DECREF(arglist);
1366
1367     size_t o = 0;
1368     if ((result != NULL) && PyString_Check(result)) {
1369         o = PyString_Size(result);
1370         if (o == 0)
1371             m_lasterror = wxSTREAM_EOF;
1372         if (o > bufsize)
1373             o = bufsize;
1374         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1375         Py_DECREF(result);
1376
1377     }
1378     else
1379         m_lasterror = wxSTREAM_READ_ERROR;
1380     wxPyEndBlockThreads(blocked);
1381     return o;
1382 }
1383
1384 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1385     m_lasterror = wxSTREAM_WRITE_ERROR;
1386     return 0;
1387 }
1388
1389 off_t wxPyCBInputStream::OnSysSeek(off_t off, wxSeekMode mode) {
1390     bool blocked = wxPyBeginBlockThreads();
1391 #ifdef _LARGE_FILES
1392     // off_t is a 64-bit value...
1393     PyObject* arglist = Py_BuildValue("(Li)", off, mode);
1394 #else
1395     PyObject* arglist = Py_BuildValue("(ii)", off, mode);
1396 #endif
1397     PyObject* result = PyEval_CallObject(m_seek, arglist);
1398     Py_DECREF(arglist);
1399     Py_XDECREF(result);
1400     wxPyEndBlockThreads(blocked);
1401     return OnSysTell();
1402 }
1403
1404
1405 off_t wxPyCBInputStream::OnSysTell() const {
1406     bool blocked = wxPyBeginBlockThreads();
1407     PyObject* arglist = Py_BuildValue("()");
1408     PyObject* result = PyEval_CallObject(m_tell, arglist);
1409     Py_DECREF(arglist);
1410     off_t o = 0;
1411     if (result != NULL) {
1412 #ifdef _LARGE_FILES
1413         if (PyLong_Check(result))
1414             o = PyLong_AsLongLong(result);
1415         else
1416 #endif
1417             o = PyInt_AsLong(result);
1418         Py_DECREF(result);
1419     };
1420     wxPyEndBlockThreads(blocked);
1421     return o;
1422 }
1423
1424 //----------------------------------------------------------------------
1425
1426 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1427
1428 wxPyCallback::wxPyCallback(PyObject* func) {
1429     m_func = func;
1430     Py_INCREF(m_func);
1431 }
1432
1433 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1434     m_func = other.m_func;
1435     Py_INCREF(m_func);
1436 }
1437
1438 wxPyCallback::~wxPyCallback() {
1439     bool blocked = wxPyBeginBlockThreads();
1440     Py_DECREF(m_func);
1441     wxPyEndBlockThreads(blocked);
1442 }
1443
1444
1445 #define wxPy_PRECALLINIT     "_preCallInit"
1446 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1447
1448 // This function is used for all events destined for Python event handlers.
1449 void wxPyCallback::EventThunker(wxEvent& event) {
1450     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1451     PyObject*       func = cb->m_func;
1452     PyObject*       result;
1453     PyObject*       arg;
1454     PyObject*       tuple;
1455     bool            checkSkip = False;
1456
1457     bool blocked = wxPyBeginBlockThreads();
1458     wxString className = event.GetClassInfo()->GetClassName();
1459
1460     // If the event is one of these types then pass the original
1461     // event object instead of the one passed to us.
1462     if ( className == wxT("wxPyEvent") ) {
1463         arg =       ((wxPyEvent*)&event)->GetSelf();
1464         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1465     }
1466     else if ( className == wxT("wxPyCommandEvent") ) {
1467         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1468         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1469     }
1470     else {
1471         arg = wxPyConstructObject((void*)&event, className);
1472     }
1473
1474     if (!arg) {
1475         PyErr_Print();
1476     } else {
1477         // "intern" the pre/post method names to speed up the HasAttr
1478         static PyObject* s_preName  = NULL;
1479         static PyObject* s_postName = NULL;
1480         if (s_preName == NULL) {
1481             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1482             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1483         }
1484
1485         // Check if the event object needs some preinitialization
1486         if (PyObject_HasAttr(arg, s_preName)) {
1487             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1488             if ( result ) {
1489                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1490                 PyErr_Clear();       // Just in case...
1491             } else {
1492                 PyErr_Print();
1493             }
1494         }
1495
1496         // Call the event handler, passing the event object
1497         tuple = PyTuple_New(1);
1498         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1499         result = PyEval_CallObject(func, tuple);
1500         if ( result ) {
1501             Py_DECREF(result);   // result is ignored, but we still need to decref it
1502             PyErr_Clear();       // Just in case...
1503         } else {
1504             PyErr_Print();
1505         }
1506
1507         // Check if the event object needs some post cleanup
1508         if (PyObject_HasAttr(arg, s_postName)) {
1509             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1510             if ( result ) {
1511                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1512                 PyErr_Clear();       // Just in case...
1513             } else {
1514                 PyErr_Print();
1515             }
1516         }
1517
1518         if ( checkSkip ) {
1519             // if the event object was one of our special types and
1520             // it had been cloned, then we need to extract the Skipped
1521             // value from the original and set it in the clone.
1522             result = PyObject_CallMethod(arg, "GetSkipped", "");
1523             if ( result ) {
1524                 event.Skip(PyInt_AsLong(result));
1525                 Py_DECREF(result);
1526             } else {
1527                 PyErr_Print();
1528             }
1529         }
1530         Py_DECREF(tuple);
1531     }
1532     wxPyEndBlockThreads(blocked);
1533 }
1534
1535
1536 //----------------------------------------------------------------------
1537
1538 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1539       m_lastFound = NULL;
1540       m_self = other.m_self;
1541       m_class = other.m_class;
1542       if (m_self) {
1543           Py_INCREF(m_self);
1544           Py_INCREF(m_class);
1545       }
1546 }
1547
1548
1549 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1550     m_self = self;
1551     m_class = klass;
1552     m_incRef = incref;
1553     if (incref) {
1554         Py_INCREF(m_self);
1555         Py_INCREF(m_class);
1556     }
1557 }
1558
1559
1560 #if PYTHON_API_VERSION >= 1011
1561
1562 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1563 // in which the method was defined.  Starting with 2.2 it returns
1564 // "class that asked for the method" which seems totally bogus to me
1565 // but apprently it fixes some obscure problem waiting to happen in
1566 // Python.  Since the API was not documented Guido and the gang felt
1567 // safe in changing it.  Needless to say that totally screwed up the
1568 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1569 // code to find the class where the method is actually defined...
1570
1571 static
1572 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1573 {
1574     int i, n;
1575
1576     if (PyType_Check(klass)) {      // new style classes
1577         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1578         PyTypeObject* type = (PyTypeObject*)klass;
1579         PyObject *mro, *res, *base, *dict;
1580         /* Look in tp_dict of types in MRO */
1581         mro = type->tp_mro;
1582         assert(PyTuple_Check(mro));
1583         n = PyTuple_GET_SIZE(mro);
1584         for (i = 0; i < n; i++) {
1585             base = PyTuple_GET_ITEM(mro, i);
1586             if (PyClass_Check(base))
1587                 dict = ((PyClassObject *)base)->cl_dict;
1588             else {
1589                 assert(PyType_Check(base));
1590                 dict = ((PyTypeObject *)base)->tp_dict;
1591             }
1592             assert(dict && PyDict_Check(dict));
1593             res = PyDict_GetItem(dict, name);
1594             if (res != NULL)
1595                 return base;
1596         }
1597         return NULL;
1598     }
1599
1600     else if (PyClass_Check(klass)) { // old style classes
1601         // This code is borrowed/adapted from class_lookup in classobject.c
1602         PyClassObject* cp = (PyClassObject*)klass;
1603         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1604         if (value != NULL) {
1605             return (PyObject*)cp;
1606         }
1607         n = PyTuple_Size(cp->cl_bases);
1608         for (i = 0; i < n; i++) {
1609             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1610             PyObject *v = PyFindClassWithAttr(base, name);
1611             if (v != NULL)
1612                 return v;
1613         }
1614         return NULL;
1615     }
1616     return NULL;
1617 }
1618 #endif
1619
1620
1621 static
1622 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
1623 {
1624     PyObject* mgc = PyMethod_GET_CLASS(method);
1625
1626 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1627     return mgc;
1628 #else                             // 2.2 and after, the hard way...
1629
1630     PyObject* nameo = PyString_FromString(name);
1631     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
1632     Py_DECREF(nameo);
1633     return klass;
1634 #endif
1635 }
1636
1637
1638
1639 bool wxPyCallbackHelper::findCallback(const char* name) const {
1640     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1641     self->m_lastFound = NULL;
1642
1643     // If the object (m_self) has an attibute of the given name...
1644     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
1645         PyObject *method, *klass;
1646         method = PyObject_GetAttrString(m_self, (char*)name);
1647
1648         // ...and if that attribute is a method, and if that method's class is
1649         // not from a base class...
1650         if (PyMethod_Check(method) &&
1651             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
1652             ((klass == m_class) || PyObject_IsSubclass(klass, m_class))) {
1653
1654             // ...then we'll save a pointer to the method so callCallback can call it.
1655             self->m_lastFound = method;
1656         }
1657         else {
1658             Py_DECREF(method);
1659         }
1660     }
1661     return m_lastFound != NULL;
1662 }
1663
1664
1665 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1666     PyObject*   result;
1667     int         retval = False;
1668
1669     result = callCallbackObj(argTuple);
1670     if (result) {                       // Assumes an integer return type...
1671         retval = PyInt_AsLong(result);
1672         Py_DECREF(result);
1673         PyErr_Clear();                  // forget about it if it's not...
1674     }
1675     return retval;
1676 }
1677
1678 // Invoke the Python callable object, returning the raw PyObject return
1679 // value.  Caller should DECREF the return value and also manage the GIL.
1680 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1681     PyObject* result;
1682
1683     // Save a copy of the pointer in case the callback generates another
1684     // callback.  In that case m_lastFound will have a different value when
1685     // it gets back here...
1686     PyObject* method = m_lastFound;
1687
1688     result = PyEval_CallObject(method, argTuple);
1689     Py_DECREF(argTuple);
1690     Py_DECREF(method);
1691     if (!result) {
1692         PyErr_Print();
1693     }
1694     return result;
1695 }
1696
1697
1698 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1699     cbh.setSelf(self, klass, incref);
1700 }
1701
1702 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
1703     return cbh.findCallback(name);
1704 }
1705
1706 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1707     return cbh.callCallback(argTuple);
1708 }
1709
1710 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1711     return cbh.callCallbackObj(argTuple);
1712 }
1713
1714
1715 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1716     if (cbh->m_incRef) {
1717         bool blocked = wxPyBeginBlockThreads();
1718         Py_XDECREF(cbh->m_self);
1719         Py_XDECREF(cbh->m_class);
1720         wxPyEndBlockThreads(blocked);
1721     }
1722 }
1723
1724 //---------------------------------------------------------------------------
1725 //---------------------------------------------------------------------------
1726 // These event classes can be derived from in Python and passed through the event
1727 // system without losing anything.  They do this by keeping a reference to
1728 // themselves and some special case handling in wxPyCallback::EventThunker.
1729
1730
1731 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1732     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1733     //Py_INCREF(m_self);        //      circular loops...
1734     m_cloned = False;
1735 }
1736
1737 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1738     bool blocked = wxPyBeginBlockThreads();
1739     if (m_cloned)
1740         Py_DECREF(m_self);
1741     wxPyEndBlockThreads(blocked);
1742 }
1743
1744 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1745     bool blocked = wxPyBeginBlockThreads();
1746     if (m_cloned)
1747         Py_DECREF(m_self);
1748     m_self = self;
1749     if (clone) {
1750         Py_INCREF(m_self);
1751         m_cloned = True;
1752     }
1753     wxPyEndBlockThreads(blocked);
1754 }
1755
1756 PyObject* wxPyEvtSelfRef::GetSelf() const {
1757     Py_INCREF(m_self);
1758     return m_self;
1759 }
1760
1761
1762 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1763 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1764
1765
1766 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1767     : wxEvent(winid, commandType) {
1768 }
1769
1770
1771 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1772     : wxEvent(evt)
1773 {
1774     SetSelf(evt.m_self, True);
1775 }
1776
1777
1778 wxPyEvent::~wxPyEvent() {
1779 }
1780
1781
1782 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1783     : wxCommandEvent(commandType, id) {
1784 }
1785
1786
1787 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1788     : wxCommandEvent(evt)
1789 {
1790     SetSelf(evt.m_self, True);
1791 }
1792
1793
1794 wxPyCommandEvent::~wxPyCommandEvent() {
1795 }
1796
1797
1798
1799
1800
1801 //---------------------------------------------------------------------------
1802 //---------------------------------------------------------------------------
1803 // Convert a wxList to a Python List, only works for lists of wxObjects
1804
1805 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1806     wxList*     list = (wxList*)listbase;  // this is probably bad...
1807     PyObject*   pyList;
1808     PyObject*   pyObj;
1809     wxObject*   wxObj;
1810     wxNode*     node = list->GetFirst();
1811
1812     bool blocked = wxPyBeginBlockThreads();
1813     pyList = PyList_New(0);
1814     while (node) {
1815         wxObj = node->GetData();
1816         pyObj = wxPyMake_wxObject(wxObj);
1817         PyList_Append(pyList, pyObj);
1818         node = node->GetNext();
1819     }
1820     wxPyEndBlockThreads(blocked);
1821     return pyList;
1822 }
1823
1824 //----------------------------------------------------------------------
1825
1826 long wxPyGetWinHandle(wxWindow* win) {
1827
1828 #ifdef __WXMSW__
1829     return (long)win->GetHandle();
1830 #endif
1831
1832 #if defined(__WXGTK__) || defined(__WXX11)
1833     return (long)GetXWindow(win);
1834 #endif
1835
1836 #ifdef __WXMAC__
1837     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
1838     return (long)win->GetHandle();
1839 #endif
1840
1841     return 0;
1842 }
1843
1844 //----------------------------------------------------------------------
1845 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1846 // included in every file over and over again...
1847
1848 wxString* wxString_in_helper(PyObject* source) {
1849     wxString* target = NULL;
1850
1851     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1852         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
1853         return NULL;
1854     }
1855 #if wxUSE_UNICODE
1856     PyObject* uni = source;
1857     if (PyString_Check(source)) {
1858         uni = PyUnicode_FromObject(source);
1859         if (PyErr_Occurred()) return NULL;
1860     }
1861     target = new wxString();
1862     size_t len = PyUnicode_GET_SIZE(uni);
1863     if (len) {
1864         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target->GetWriteBuf(len), len);
1865         target->UngetWriteBuf();
1866     }
1867
1868     if (PyString_Check(source))
1869         Py_DECREF(uni);
1870 #else
1871     char* tmpPtr; int tmpSize;
1872     if (PyString_AsStringAndSize(source, &tmpPtr, &tmpSize) == -1) {
1873         PyErr_SetString(PyExc_TypeError, "Unable to convert string");
1874         return NULL;
1875     }
1876     target = new wxString(tmpPtr, tmpSize);
1877 #endif // wxUSE_UNICODE
1878
1879     return target;
1880 }
1881
1882
1883 // Similar to above except doesn't use "new" and doesn't set an exception
1884 wxString Py2wxString(PyObject* source)
1885 {
1886     wxString target;
1887
1888 #if wxUSE_UNICODE
1889     // Convert to a unicode object, if not already, then to a wxString
1890     PyObject* uni = source;
1891     if (!PyUnicode_Check(source)) {
1892         uni = PyUnicode_FromObject(source);
1893         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
1894     }
1895     size_t len = PyUnicode_GET_SIZE(uni);
1896     if (len) {
1897         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target.GetWriteBuf(len), len);
1898         target.UngetWriteBuf();
1899     }
1900
1901     if (!PyUnicode_Check(source))
1902         Py_DECREF(uni);
1903 #else
1904     // Convert to a string object if it isn't already, then to wxString
1905     PyObject* str = source;
1906     if (!PyString_Check(source)) {
1907         str = PyObject_Str(source);
1908         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1909     }
1910     char* tmpPtr; int tmpSize;
1911     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1912     target = wxString(tmpPtr, tmpSize);
1913
1914     if (!PyString_Check(source))
1915         Py_DECREF(str);
1916 #endif // wxUSE_UNICODE
1917
1918     return target;
1919 }
1920
1921
1922 // Make either a Python String or Unicode object, depending on build mode
1923 PyObject* wx2PyString(const wxString& src)
1924 {
1925     PyObject* str;
1926 #if wxUSE_UNICODE
1927     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
1928 #else
1929     str = PyString_FromStringAndSize(src.c_str(), src.Len());
1930 #endif
1931     return str;
1932 }
1933
1934
1935 //----------------------------------------------------------------------
1936
1937
1938 byte* byte_LIST_helper(PyObject* source) {
1939     if (!PyList_Check(source)) {
1940         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1941         return NULL;
1942     }
1943     int count = PyList_Size(source);
1944     byte* temp = new byte[count];
1945     if (! temp) {
1946         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1947         return NULL;
1948     }
1949     for (int x=0; x<count; x++) {
1950         PyObject* o = PyList_GetItem(source, x);
1951         if (! PyInt_Check(o)) {
1952             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1953             return NULL;
1954         }
1955         temp[x] = (byte)PyInt_AsLong(o);
1956     }
1957     return temp;
1958 }
1959
1960
1961 int* int_LIST_helper(PyObject* source) {
1962     if (!PyList_Check(source)) {
1963         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1964         return NULL;
1965     }
1966     int count = PyList_Size(source);
1967     int* temp = new int[count];
1968     if (! temp) {
1969         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1970         return NULL;
1971     }
1972     for (int x=0; x<count; x++) {
1973         PyObject* o = PyList_GetItem(source, x);
1974         if (! PyInt_Check(o)) {
1975             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1976             return NULL;
1977         }
1978         temp[x] = PyInt_AsLong(o);
1979     }
1980     return temp;
1981 }
1982
1983
1984 long* long_LIST_helper(PyObject* source) {
1985     if (!PyList_Check(source)) {
1986         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1987         return NULL;
1988     }
1989     int count = PyList_Size(source);
1990     long* temp = new long[count];
1991     if (! temp) {
1992         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1993         return NULL;
1994     }
1995     for (int x=0; x<count; x++) {
1996         PyObject* o = PyList_GetItem(source, x);
1997         if (! PyInt_Check(o)) {
1998             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1999             return NULL;
2000         }
2001         temp[x] = PyInt_AsLong(o);
2002     }
2003     return temp;
2004 }
2005
2006
2007 char** string_LIST_helper(PyObject* source) {
2008     if (!PyList_Check(source)) {
2009         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2010         return NULL;
2011     }
2012     int count = PyList_Size(source);
2013     char** temp = new char*[count];
2014     if (! temp) {
2015         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2016         return NULL;
2017     }
2018     for (int x=0; x<count; x++) {
2019         PyObject* o = PyList_GetItem(source, x);
2020         if (! PyString_Check(o)) {
2021             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2022             return NULL;
2023         }
2024         temp[x] = PyString_AsString(o);
2025     }
2026     return temp;
2027 }
2028
2029 //--------------------------------
2030 // Part of patch from Tim Hochberg
2031 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
2032     if (PyInt_Check(o1) && PyInt_Check(o2)) {
2033         point->x = PyInt_AS_LONG(o1);
2034         point->y = PyInt_AS_LONG(o2);
2035         return True;
2036     }
2037     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
2038         point->x = (int)PyFloat_AS_DOUBLE(o1);
2039         point->y = (int)PyFloat_AS_DOUBLE(o2);
2040         return True;
2041     }
2042     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {  // TODO: Why???
2043         // Disallow instances because they can cause havok
2044         return False;
2045     }
2046     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
2047         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
2048         point->x = PyInt_AsLong(o1);
2049         point->y = PyInt_AsLong(o2);
2050         return True;
2051     }
2052     return False;
2053 }
2054
2055
2056 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
2057     // Putting all of the declarations here allows
2058     // us to put the error handling all in one place.
2059     int x;
2060     wxPoint* temp;
2061     PyObject *o, *o1, *o2;
2062     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2063
2064     if (!PySequence_Check(source)) {
2065         goto error0;
2066     }
2067
2068     // The length of the sequence is returned in count.
2069     *count = PySequence_Length(source);
2070     if (*count < 0) {
2071         goto error0;
2072     }
2073
2074     temp = new wxPoint[*count];
2075     if (!temp) {
2076         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2077         return NULL;
2078     }
2079     for (x=0; x<*count; x++) {
2080         // Get an item: try fast way first.
2081         if (isFast) {
2082             o = PySequence_Fast_GET_ITEM(source, x);
2083         }
2084         else {
2085             o = PySequence_GetItem(source, x);
2086             if (o == NULL) {
2087                 goto error1;
2088             }
2089         }
2090
2091         // Convert o to wxPoint.
2092         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2093             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2094             o1 = PySequence_Fast_GET_ITEM(o, 0);
2095             o2 = PySequence_Fast_GET_ITEM(o, 1);
2096             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2097                 goto error2;
2098             }
2099         }
2100         else if (wxPySwigInstance_Check(o)) {
2101             wxPoint* pt;
2102             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2103                 goto error2;
2104             }
2105             temp[x] = *pt;
2106         }
2107         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2108             o1 = PySequence_GetItem(o, 0);
2109             o2 = PySequence_GetItem(o, 1);
2110             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2111                 goto error3;
2112             }
2113             Py_DECREF(o1);
2114             Py_DECREF(o2);
2115         }
2116         else {
2117             goto error2;
2118         }
2119         // Clean up.
2120         if (!isFast)
2121             Py_DECREF(o);
2122     }
2123     return temp;
2124
2125 error3:
2126     Py_DECREF(o1);
2127     Py_DECREF(o2);
2128 error2:
2129     if (!isFast)
2130         Py_DECREF(o);
2131 error1:
2132     delete [] temp;
2133 error0:
2134     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2135     return NULL;
2136 }
2137 // end of patch
2138 //------------------------------
2139
2140
2141 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2142     if (!PyList_Check(source)) {
2143         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2144         return NULL;
2145     }
2146     int count = PyList_Size(source);
2147     wxBitmap** temp = new wxBitmap*[count];
2148     if (! temp) {
2149         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2150         return NULL;
2151     }
2152     for (int x=0; x<count; x++) {
2153         PyObject* o = PyList_GetItem(source, x);
2154         if (wxPySwigInstance_Check(o)) {
2155             wxBitmap*    pt;
2156             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2157                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2158                 return NULL;
2159             }
2160             temp[x] = pt;
2161         }
2162         else {
2163             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2164             return NULL;
2165         }
2166     }
2167     return temp;
2168 }
2169
2170
2171
2172 wxString* wxString_LIST_helper(PyObject* source) {
2173     if (!PyList_Check(source)) {
2174         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2175         return NULL;
2176     }
2177     int count = PyList_Size(source);
2178     wxString* temp = new wxString[count];
2179     if (! temp) {
2180         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2181         return NULL;
2182     }
2183     for (int x=0; x<count; x++) {
2184         PyObject* o = PyList_GetItem(source, x);
2185 #if PYTHON_API_VERSION >= 1009
2186         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2187             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2188             return NULL;
2189         }
2190 #else
2191         if (! PyString_Check(o)) {
2192             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2193             return NULL;
2194         }
2195 #endif
2196
2197         wxString* pStr = wxString_in_helper(o);
2198         temp[x] = *pStr;
2199         delete pStr;
2200     }
2201     return temp;
2202 }
2203
2204
2205 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2206     if (!PyList_Check(source)) {
2207         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2208         return NULL;
2209     }
2210     int count                = PyList_Size(source);
2211     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2212     if (! temp) {
2213         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2214         return NULL;
2215     }
2216     for (int x=0; x<count; x++) {
2217         PyObject* o = PyList_GetItem(source, x);
2218         if (wxPySwigInstance_Check(o)) {
2219             wxAcceleratorEntry* ae;
2220             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2221                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2222                 return NULL;
2223             }
2224             temp[x] = *ae;
2225         }
2226         else if (PyTuple_Check(o)) {
2227             PyObject* o1 = PyTuple_GetItem(o, 0);
2228             PyObject* o2 = PyTuple_GetItem(o, 1);
2229             PyObject* o3 = PyTuple_GetItem(o, 2);
2230             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2231         }
2232         else {
2233             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2234             return NULL;
2235         }
2236     }
2237     return temp;
2238 }
2239
2240
2241 wxPen** wxPen_LIST_helper(PyObject* source) {
2242     if (!PyList_Check(source)) {
2243         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2244         return NULL;
2245     }
2246     int count = PyList_Size(source);
2247     wxPen** temp = new wxPen*[count];
2248     if (!temp) {
2249         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2250         return NULL;
2251     }
2252     for (int x=0; x<count; x++) {
2253         PyObject* o = PyList_GetItem(source, x);
2254         if (wxPySwigInstance_Check(o)) {
2255             wxPen*  pt;
2256             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2257                 delete temp;
2258                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2259                 return NULL;
2260             }
2261             temp[x] = pt;
2262         }
2263         else {
2264             delete temp;
2265             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2266             return NULL;
2267         }
2268     }
2269     return temp;
2270 }
2271
2272
2273 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2274     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2275     PyObject *o1, *o2;
2276
2277     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2278         return False;
2279
2280     if (isFast) {
2281         o1 = PySequence_Fast_GET_ITEM(source, 0);
2282         o2 = PySequence_Fast_GET_ITEM(source, 1);
2283     }
2284     else {
2285         o1 = PySequence_GetItem(source, 0);
2286         o2 = PySequence_GetItem(source, 1);
2287     }
2288
2289     *i1 = PyInt_AsLong(o1);
2290     *i2 = PyInt_AsLong(o2);
2291
2292     if (! isFast) {
2293         Py_DECREF(o1);
2294         Py_DECREF(o2);
2295     }
2296     return True;
2297 }
2298
2299
2300 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2301     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2302     PyObject *o1, *o2, *o3, *o4;
2303
2304     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2305         return False;
2306
2307     if (isFast) {
2308         o1 = PySequence_Fast_GET_ITEM(source, 0);
2309         o2 = PySequence_Fast_GET_ITEM(source, 1);
2310         o3 = PySequence_Fast_GET_ITEM(source, 2);
2311         o4 = PySequence_Fast_GET_ITEM(source, 3);
2312     }
2313     else {
2314         o1 = PySequence_GetItem(source, 0);
2315         o2 = PySequence_GetItem(source, 1);
2316         o3 = PySequence_GetItem(source, 2);
2317         o4 = PySequence_GetItem(source, 3);
2318     }
2319
2320     *i1 = PyInt_AsLong(o1);
2321     *i2 = PyInt_AsLong(o2);
2322     *i3 = PyInt_AsLong(o3);
2323     *i4 = PyInt_AsLong(o4);
2324
2325     if (! isFast) {
2326         Py_DECREF(o1);
2327         Py_DECREF(o2);
2328         Py_DECREF(o3);
2329         Py_DECREF(o4);
2330     }
2331     return True;
2332 }
2333
2334
2335 //----------------------------------------------------------------------
2336
2337 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2338 {
2339     void* ptr;
2340
2341     if (wxPySwigInstance_Check(source) &&
2342         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2343         return True;
2344
2345     PyErr_Clear();
2346     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2347         return True;
2348
2349     return False;
2350 }
2351
2352 bool wxSize_helper(PyObject* source, wxSize** obj)
2353 {
2354     if (source == Py_None) {
2355         **obj = wxSize(-1,-1);
2356         return True;
2357     }
2358     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2359 }
2360
2361
2362 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2363 {
2364     if (source == Py_None) {
2365         **obj = wxPoint(-1,-1);
2366         return True;
2367     }
2368     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2369 }
2370
2371
2372
2373 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2374
2375     if (source == Py_None) {
2376         **obj = wxRealPoint(-1,-1);
2377         return True;
2378     }
2379
2380     // If source is an object instance then it may already be the right type
2381     if (wxPySwigInstance_Check(source)) {
2382         wxRealPoint* ptr;
2383         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2384             goto error;
2385         *obj = ptr;
2386         return True;
2387     }
2388     // otherwise a 2-tuple of floats is expected
2389     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2390         PyObject* o1 = PySequence_GetItem(source, 0);
2391         PyObject* o2 = PySequence_GetItem(source, 1);
2392         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2393             Py_DECREF(o1);
2394             Py_DECREF(o2);
2395             goto error;
2396         }
2397         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2398         Py_DECREF(o1);
2399         Py_DECREF(o2);
2400         return True;
2401     }
2402
2403  error:
2404     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2405     return False;
2406 }
2407
2408
2409
2410 bool wxRect_helper(PyObject* source, wxRect** obj) {
2411
2412     if (source == Py_None) {
2413         **obj = wxRect(-1,-1,-1,-1);
2414         return True;
2415     }
2416
2417     // If source is an object instance then it may already be the right type
2418     if (wxPySwigInstance_Check(source)) {
2419         wxRect* ptr;
2420         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2421             goto error;
2422         *obj = ptr;
2423         return True;
2424     }
2425     // otherwise a 4-tuple of integers is expected
2426     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2427         PyObject* o1 = PySequence_GetItem(source, 0);
2428         PyObject* o2 = PySequence_GetItem(source, 1);
2429         PyObject* o3 = PySequence_GetItem(source, 2);
2430         PyObject* o4 = PySequence_GetItem(source, 3);
2431         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2432             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2433             Py_DECREF(o1);
2434             Py_DECREF(o2);
2435             Py_DECREF(o3);
2436             Py_DECREF(o4);
2437             goto error;
2438         }
2439         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2440                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2441         Py_DECREF(o1);
2442         Py_DECREF(o2);
2443         Py_DECREF(o3);
2444         Py_DECREF(o4);
2445         return True;
2446     }
2447
2448  error:
2449     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2450     return False;
2451 }
2452
2453
2454
2455 bool wxColour_helper(PyObject* source, wxColour** obj) {
2456
2457     if (source == Py_None) {
2458         **obj = wxNullColour;
2459         return True;
2460     }
2461
2462     // If source is an object instance then it may already be the right type
2463     if (wxPySwigInstance_Check(source)) {
2464         wxColour* ptr;
2465         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2466             goto error;
2467         *obj = ptr;
2468         return True;
2469     }
2470     // otherwise check for a string
2471     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2472         wxString spec = Py2wxString(source);
2473         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2474             long red, green, blue;
2475             red = green = blue = 0;
2476             spec.Mid(1,2).ToLong(&red,   16);
2477             spec.Mid(3,2).ToLong(&green, 16);
2478             spec.Mid(5,2).ToLong(&blue,  16);
2479
2480             **obj = wxColour(red, green, blue);
2481             return True;
2482         }
2483         else {                                       // it's a colour name
2484             **obj = wxColour(spec);
2485             return True;
2486         }
2487     }
2488     // last chance: 3-tuple of integers is expected
2489     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2490         PyObject* o1 = PySequence_GetItem(source, 0);
2491         PyObject* o2 = PySequence_GetItem(source, 1);
2492         PyObject* o3 = PySequence_GetItem(source, 2);
2493         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2494             Py_DECREF(o1);
2495             Py_DECREF(o2);
2496             Py_DECREF(o3);
2497             goto error;
2498         }
2499         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2500         Py_DECREF(o1);
2501         Py_DECREF(o2);
2502         Py_DECREF(o3);
2503         return True;
2504     }
2505
2506  error:
2507     PyErr_SetString(PyExc_TypeError,
2508                     "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
2509     return False;
2510 }
2511
2512
2513 bool wxColour_typecheck(PyObject* source) {
2514
2515     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2516         return True;
2517
2518     if (PyString_Check(source) || PyUnicode_Check(source))
2519         return True;
2520
2521     return False;
2522 }
2523
2524
2525
2526 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2527
2528     if (source == Py_None) {
2529         **obj = wxPoint2D(-1,-1);
2530         return True;
2531     }
2532
2533     // If source is an object instance then it may already be the right type
2534     if (wxPySwigInstance_Check(source)) {
2535         wxPoint2D* ptr;
2536         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2537             goto error;
2538         *obj = ptr;
2539         return True;
2540     }
2541     // otherwise a length-2 sequence of floats is expected
2542     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2543         PyObject* o1 = PySequence_GetItem(source, 0);
2544         PyObject* o2 = PySequence_GetItem(source, 1);
2545         // This should really check for floats, not numbers -- but that would break code.
2546         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2547             Py_DECREF(o1);
2548             Py_DECREF(o2);
2549             goto error;
2550         }
2551         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2552         Py_DECREF(o1);
2553         Py_DECREF(o2);
2554         return True;
2555     }
2556  error:
2557     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2D object.");
2558     return False;
2559 }
2560
2561
2562 //----------------------------------------------------------------------
2563
2564 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
2565
2566     PyObject* list = PyList_New(0);
2567     for (size_t i=0; i < arr.GetCount(); i++) {
2568 #if wxUSE_UNICODE
2569         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2570 #else
2571         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2572 #endif
2573         PyList_Append(list, str);
2574         Py_DECREF(str);
2575     }
2576     return list;
2577 }
2578
2579
2580 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2581
2582     PyObject* list = PyList_New(0);
2583     for (size_t i=0; i < arr.GetCount(); i++) {
2584         PyObject* number = PyInt_FromLong(arr[i]);
2585         PyList_Append(list, number);
2586         Py_DECREF(number);
2587     }
2588     return list;
2589 }
2590
2591
2592 //----------------------------------------------------------------------
2593 //----------------------------------------------------------------------
2594
2595
2596
2597