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 static PyObject* wxPyNoAppError = NULL;
  83
  84 PyObject* wxPyPtrTypeMap = NULL;
  85
  86
  87 #ifdef __WXMSW__             // If building for win32...
  88 //----------------------------------------------------------------------
  89 // This gets run when the DLL is loaded.  We just need to save a handle.
  90 //----------------------------------------------------------------------
  91
  92 BOOL WINAPI DllMain(
  93     HINSTANCE   hinstDLL,    // handle to DLL module
  94     DWORD       fdwReason,   // reason for calling function
  95     LPVOID      lpvReserved  // reserved
  96    )
  97 {
  98     // If wxPython is embedded in another wxWindows app then
  99     // the inatance has already been set.
 100     if (! wxGetInstance())
 101         wxSetInstance(hinstDLL);
 102     return True;
 103 }
 104 #endif
 105
 106 //----------------------------------------------------------------------
 107 // Classes for implementing the wxp main application shell.
 108 //----------------------------------------------------------------------
 109
 110 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 111
 112
 113 wxPyApp::wxPyApp() {
 114     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 115     m_startupComplete = False;
 116 }
 117
 118
 119 wxPyApp::~wxPyApp() {
 120 }
 121
 122
 123 // This one isn't acutally called...  We fake it with _BootstrapApp
 124 bool wxPyApp::OnInit() {
 125     return False;
 126 }
 127
 128
 129 int  wxPyApp::MainLoop() {
 130     int retval = 0;
 131
 132     DeletePendingObjects();
 133     bool initialized = wxTopLevelWindows.GetCount() != 0;
 134     if (initialized) {
 135         if ( m_exitOnFrameDelete == Later ) {
 136             m_exitOnFrameDelete = Yes;
 137         }
 138
 139         retval = wxApp::MainLoop();
 140         OnExit();
 141     }
 142     return retval;
 143 }
 144
 145
 146 bool wxPyApp::OnInitGui() {
 147     bool rval=True;
 148     wxApp::OnInitGui();  // in this case always call the base class version
 149     bool blocked = wxPyBeginBlockThreads();
 150     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 151         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 152     wxPyEndBlockThreads(blocked);
 153     return rval;
 154 }
 155
 156
 157 int wxPyApp::OnExit() {
 158     int rval=0;
 159     bool blocked = wxPyBeginBlockThreads();
 160     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 161         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 162     wxPyEndBlockThreads(blocked);
 163     wxApp::OnExit();  // in this case always call the base class version
 164     return rval;
 165 }
 166
 167
 168 #ifdef __WXDEBUG__
 169 void wxPyApp::OnAssert(const wxChar *file,
 170                      int line,
 171                      const wxChar *cond,
 172                      const wxChar *msg) {
 173
 174     // if we're not fully initialized then just log the error
 175     if (! m_startupComplete) {
 176         wxString buf;
 177         buf.Alloc(4096);
 178         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 179                    file, line, cond);
 180         if (msg != NULL) {
 181             buf += wxT(": ");
 182             buf += msg;
 183         }
 184         wxLogDebug(buf);
 185         return;
 186     }
 187
 188     // If the OnAssert is overloaded in the Python class then call it...
 189     bool found;
 190     bool blocked = wxPyBeginBlockThreads();
 191     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 192         PyObject* fso = wx2PyString(file);
 193         PyObject* cso = wx2PyString(file);
 194         PyObject* mso;
 195         if (msg != NULL)
 196             mso = wx2PyString(file);
 197         else {
 198             mso = Py_None; Py_INCREF(Py_None);
 199         }
 200         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 201         Py_DECREF(fso);
 202         Py_DECREF(cso);
 203         Py_DECREF(mso);
 204     }
 205     wxPyEndBlockThreads(blocked);
 206
 207     // ...otherwise do our own thing with it
 208     if (! found) {
 209         // ignore it?
 210         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 211             return;
 212
 213         // turn it into a Python exception?
 214         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 215             wxString buf;
 216             buf.Alloc(4096);
 217             buf.Printf(wxT("C++ assertion \"%s\" failed in %s(%d)"), cond, file, line);
 218             if (msg != NULL) {
 219                 buf += wxT(": ");
 220                 buf += msg;
 221             }
 222
 223             // set the exception
 224             bool blocked = wxPyBeginBlockThreads();
 225             PyObject* s = wx2PyString(buf);
 226             PyErr_SetObject(wxPyAssertionError, s);
 227             Py_DECREF(s);
 228             wxPyEndBlockThreads(blocked);
 229
 230             // Now when control returns to whatever API wrapper was called from
 231             // Python it should detect that an exception is set and will return
 232             // NULL, signalling the exception to Python.
 233         }
 234
 235         // Send it to the normal log destination, but only if
 236         // not _DIALOG because it will call this too
 237         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 238             wxString buf;
 239             buf.Alloc(4096);
 240             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 241                        file, line, cond);
 242             if (msg != NULL) {
 243                 buf += wxT(": ");
 244                 buf += msg;
 245             }
 246             wxLogDebug(buf);
 247         }
 248
 249         // do the normal wx assert dialog?
 250         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 251             wxApp::OnAssert(file, line, cond, msg);
 252     }
 253 }
 254 #endif
 255
 256     // For catching Apple Events
 257 void wxPyApp::MacOpenFile(const wxString &fileName)
 258 {
 259     bool blocked = wxPyBeginBlockThreads();
 260     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 261         PyObject* s = wx2PyString(fileName);
 262         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 263         Py_DECREF(s);
 264     }
 265     wxPyEndBlockThreads(blocked);
 266 }
 267
 268 void wxPyApp::MacPrintFile(const wxString &fileName)
 269 {
 270     bool blocked = wxPyBeginBlockThreads();
 271     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 272         PyObject* s = wx2PyString(fileName);
 273         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 274         Py_DECREF(s);
 275     }
 276     wxPyEndBlockThreads(blocked);
 277 }
 278
 279 void wxPyApp::MacNewFile()
 280 {
 281     bool blocked = wxPyBeginBlockThreads();
 282     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 283         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 284     wxPyEndBlockThreads(blocked);
 285 }
 286
 287 void wxPyApp::MacReopenApp()
 288 {
 289     bool blocked = wxPyBeginBlockThreads();
 290     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 291         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 292     wxPyEndBlockThreads(blocked);
 293 }
 294
 295
 296 /*static*/
 297 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 298 #ifdef __WXMAC__
 299     return s_macSupportPCMenuShortcuts;
 300 #else
 301     return 0;
 302 #endif
 303 }
 304
 305 /*static*/
 306 long wxPyApp::GetMacAboutMenuItemId() {
 307 #ifdef __WXMAC__
 308     return s_macAboutMenuItemId;
 309 #else
 310     return 0;
 311 #endif
 312 }
 313
 314 /*static*/
 315 long wxPyApp::GetMacPreferencesMenuItemId() {
 316 #ifdef __WXMAC__
 317     return s_macPreferencesMenuItemId;
 318 #else
 319     return 0;
 320 #endif
 321 }
 322
 323 /*static*/
 324 long wxPyApp::GetMacExitMenuItemId() {
 325 #ifdef __WXMAC__
 326     return s_macExitMenuItemId;
 327 #else
 328     return 0;
 329 #endif
 330 }
 331
 332 /*static*/
 333 wxString wxPyApp::GetMacHelpMenuTitleName() {
 334 #ifdef __WXMAC__
 335     return s_macHelpMenuTitleName;
 336 #else
 337     return wxEmptyString;
 338 #endif
 339 }
 340
 341 /*static*/
 342 void wxPyApp::SetMacSupportPCMenuShortcuts(bool val) {
 343 #ifdef __WXMAC__
 344     s_macSupportPCMenuShortcuts = val;
 345 #endif
 346 }
 347
 348 /*static*/
 349 void wxPyApp::SetMacAboutMenuItemId(long val) {
 350 #ifdef __WXMAC__
 351     s_macAboutMenuItemId = val;
 352 #endif
 353 }
 354
 355 /*static*/
 356 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 357 #ifdef __WXMAC__
 358     s_macPreferencesMenuItemId = val;
 359 #endif
 360 }
 361
 362 /*static*/
 363 void wxPyApp::SetMacExitMenuItemId(long val) {
 364 #ifdef __WXMAC__
 365     s_macExitMenuItemId = val;
 366 #endif
 367 }
 368
 369 /*static*/
 370 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 371 #ifdef __WXMAC__
 372     s_macHelpMenuTitleName = val;
 373 #endif
 374 }
 375
 376
 377 // This finishes the initialization of wxWindows and then calls the OnInit
 378 // that should be present in the derived (Python) class.
 379 void wxPyApp::_BootstrapApp()
 380 {
 381     bool        result;
 382     PyObject*   retval = NULL;
 383     PyObject*   pyint  = NULL;
 384
 385
 386     // Get any command-line args passed to this program from the sys module
 387     int    argc = 0;
 388     char** argv = NULL;
 389     bool blocked = wxPyBeginBlockThreads();
 390     PyObject* sysargv = PySys_GetObject("argv");
 391     if (sysargv != NULL) {
 392         argc = PyList_Size(sysargv);
 393         argv = new char*[argc+1];
 394         int x;
 395         for(x=0; x<argc; x++) {
 396             PyObject *pyArg = PyList_GetItem(sysargv, x);
 397             argv[x] = PyString_AsString(pyArg);
 398         }
 399         argv[argc] = NULL;
 400     }
 401     wxPyEndBlockThreads(blocked);
 402
 403     // Initialize wxWidgets
 404     result = wxEntryStart(argc, argv);
 405     delete [] argv;
 406
 407     blocked = wxPyBeginBlockThreads();
 408     if (! result)  {
 409         PyErr_SetString(PyExc_SystemError,
 410                         "wxEntryStart failed, unable to initialize wxWidgets!"
 411 #ifdef __WXGTK__
 412                         "  (Is DISPLAY set properly?)"
 413 #endif
 414             );
 415         goto error;
 416     }
 417
 418     // On wxGTK the locale will be changed to match the system settings, but
 419     // Python needs to have LC_NUMERIC set to "C" in order for the floating
 420     // point conversions and such to work right.
 421 #ifdef __WXGTK__
 422     setlocale(LC_NUMERIC, "C");
 423 #endif
 424
 425     // The stock objects were all NULL when they were loaded into
 426     // SWIG generated proxies, so re-init those now...
 427     wxPy_ReinitStockObjects(3);
 428
 429     // It's now ok to generate exceptions for assertion errors.
 430     wxPythonApp->SetStartupComplete(True);
 431
 432     // Call the Python wxApp's OnInit function
 433     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 434
 435         PyObject* method = m_myInst.GetLastFound();
 436         PyObject* argTuple = PyTuple_New(0);
 437         retval = PyEval_CallObject(method, argTuple);
 438         Py_DECREF(argTuple);
 439         Py_DECREF(method);
 440         if (retval == NULL)
 441             goto error;
 442
 443         pyint = PyNumber_Int(retval);
 444         if (! pyint) {
 445             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 446             goto error;
 447         }
 448         result = PyInt_AS_LONG(pyint);
 449     }
 450     else {
 451         // Is it okay if there is no OnInit?  Probably so...
 452         result = True;
 453     }
 454
 455     if (! result) {
 456         PyErr_SetString(PyExc_SystemExit, "OnInit returned False, exiting...");
 457     }
 458
 459  error:
 460     Py_XDECREF(retval);
 461     Py_XDECREF(pyint);
 462
 463     wxPyEndBlockThreads(blocked);
 464 };
 465
 466 //---------------------------------------------------------------------
 467 //----------------------------------------------------------------------
 468
 469
 470 #if 0
 471 static char* wxPyCopyCString(const wxChar* src)
 472 {
 473     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 474     size_t len = strlen(buff);
 475     char*  dest = new char[len+1];
 476     strcpy(dest, buff);
 477     return dest;
 478 }
 479
 480 #if wxUSE_UNICODE
 481 static char* wxPyCopyCString(const char* src)   // we need a char version too
 482 {
 483     size_t len = strlen(src);
 484     char*  dest = new char[len+1];
 485     strcpy(dest, src);
 486     return dest;
 487 }
 488 #endif
 489
 490 static wxChar* wxPyCopyWString(const char *src)
 491 {
 492     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 493     wxString str(src, *wxConvCurrent);
 494     return copystring(str);
 495 }
 496
 497 #if wxUSE_UNICODE
 498 static wxChar* wxPyCopyWString(const wxChar *src)
 499 {
 500     return copystring(src);
 501 }
 502 #endif
 503 #endif
 504
 505
 506 inline const char* dropwx(const char* name) {
 507     if (name[0] == 'w' && name[1] == 'x')
 508         return name+2;
 509     else
 510         return name;
 511 }
 512
 513 //----------------------------------------------------------------------
 514
 515 // This function is called when the wx._core_ module is imported to do some
 516 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 517 // wxPyApp::_BootstrapApp
 518 void __wxPyPreStart(PyObject* moduleDict)
 519 {
 520
 521 #ifdef __WXMSW__
 522 //    wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 523 #endif
 524
 525 #ifdef WXP_WITH_THREAD
 526     PyEval_InitThreads();
 527     wxPyTStates = new wxPyThreadStateArray;
 528     wxPyTMutex = new wxMutex;
 529
 530     // Save the current (main) thread state in our array
 531     PyThreadState* tstate = wxPyBeginAllowThreads();
 532     wxPyEndAllowThreads(tstate);
 533 #endif
 534
 535     // Ensure that the build options in the DLL (or whatever) match this build
 536     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 537
 538     // Init the stock objects to a non-NULL value so SWIG doesn't create them as None
 539     wxPy_ReinitStockObjects(1);
 540
 541     wxInitAllImageHandlers();
 542 }
 543
 544
 545
 546 void __wxPyCleanup() {
 547     wxPyDoingCleanup = True;
 548     if (wxPyDoCleanup) {
 549         wxPyDoCleanup = False;
 550         wxEntryCleanup();
 551     }
 552 #ifdef WXP_WITH_THREAD
 553     delete wxPyTMutex;
 554     wxPyTMutex = NULL;
 555     wxPyTStates->Empty();
 556     delete wxPyTStates;
 557     wxPyTStates = NULL;
 558 #endif
 559 }
 560
 561
 562 // Save a reference to the dictionary of the wx._core module, and inject
 563 // a few more things into it.
 564 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 565 {
 566
 567     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 568         return NULL;
 569
 570     if (!PyDict_Check(wxPython_dict)) {
 571         PyErr_SetString(PyExc_TypeError,
 572                         "_wxPySetDictionary must have dictionary object!");
 573         return NULL;
 574     }
 575
 576     if (! wxPyPtrTypeMap)
 577         wxPyPtrTypeMap = PyDict_New();
 578     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 579
 580     // Create an exception object to use for wxASSERTions
 581     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 582                                             PyExc_AssertionError, NULL);
 583     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 584
 585     // Create an exception object to use when the app object hasn't been created yet
 586     wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
 587                                         PyExc_RuntimeError, NULL);
 588     PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
 589
 590
 591
 592 #ifdef __WXMOTIF__
 593 #define wxPlatform "__WXMOTIF__"
 594 #define wxPlatName "wxMotif"
 595 #endif
 596 #ifdef __WXX11__
 597 #define wxPlatform "__WXX11__"
 598 #define wxPlatName "wxX11"
 599 #endif
 600 #ifdef __WXGTK__
 601 #define wxPlatform "__WXGTK__"
 602 #define wxPlatName "wxGTK"
 603 #endif
 604 #ifdef __WXMSW__
 605 #define wxPlatform "__WXMSW__"
 606 #define wxPlatName "wxMSW"
 607 #endif
 608 #ifdef __WXMAC__
 609 #define wxPlatform "__WXMAC__"
 610 #define wxPlatName "wxMac"
 611 #endif
 612
 613 #ifdef __WXDEBUG__
 614     int wxdebug = 1;
 615 #else
 616     int wxdebug = 0;
 617 #endif
 618
 619     // These should be deprecated in favor of the PlatformInfo tuple built below...
 620     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 621     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 622     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 623
 624
 625     PyObject* PlatInfo = PyList_New(0);
 626     PyObject* obj;
 627
 628 #define _AddInfoString(st) \
 629     obj = PyString_FromString(st); \
 630     PyList_Append(PlatInfo, obj); \
 631     Py_DECREF(obj)
 632
 633     _AddInfoString(wxPlatform);
 634     _AddInfoString(wxPlatName);
 635 #if wxUSE_UNICODE
 636     _AddInfoString("unicode");
 637 #else
 638     _AddInfoString("ascii");
 639 #endif
 640 #ifdef __WXGTK__
 641 #ifdef __WXGTK20__
 642     _AddInfoString("gtk2");
 643 #else
 644     _AddInfoString("gtk1");
 645 #endif
 646 #endif
 647 #ifdef __WXDEBUG__
 648     _AddInfoString("wx-assertions-on");
 649 #else
 650     _AddInfoString("wx-assertions-off");
 651 #endif
 652
 653 #undef _AddInfoString
 654
 655     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 656     Py_DECREF(PlatInfo);
 657     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 658
 659     RETURN_NONE();
 660 }
 661
 662
 663 //---------------------------------------------------------------------------
 664
 665 // Python's PyInstance_Check does not return True for instances of new-style
 666 // classes.  This should get close enough for both new and old classes but I
 667 // should re-evaluate the need for doing instance checks...
 668 bool wxPyInstance_Check(PyObject* obj) {
 669     return PyObject_HasAttrString(obj, "__class__") != 0;
 670 }
 671
 672
 673 // This one checks if the object is an instance of a SWIG proxy class (it has
 674 // a .this attribute)
 675 bool wxPySwigInstance_Check(PyObject* obj) {
 676     return PyObject_HasAttrString(obj, "this") != 0;
 677 }
 678
 679 //---------------------------------------------------------------------------
 680
 681 // The stock objects are no longer created when the wx._core_ module is
 682 // imported, but only after the app object has been created.  The
 683 // wxPy_ReinitStockObjects function will be called 3 times to pass the stock
 684 // objects though various stages of evolution:
 685 //
 686 //   pass 1: Set all the pointers to a non-NULL value so the Python proxy
 687 //           object will be created (otherwise SWIG will just use None.)
 688 //
 689 //   pass 2: After the module has been imported and the python proxys have
 690 //           been created, then set the __class__ to be _wxPyUnbornObject so
 691 //           it will catch any access to the object and will raise an exception.
 692 //
 693 //   pass 3: Finally, from BootstrapApp patch things up so the stock objects
 694 //           can be used.
 695
 696
 697 PyObject* __wxPyFixStockObjects(PyObject* /* self */, PyObject* args)
 698 {
 699     wxPy_ReinitStockObjects(2);
 700     RETURN_NONE();
 701 }
 702
 703
 704 static void rsoPass2(const char* name)
 705 {
 706     static PyObject* unbornObjectClass = NULL;
 707     PyObject* obj;
 708
 709     if (unbornObjectClass == NULL) {
 710         unbornObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyUnbornObject");
 711         Py_INCREF(unbornObjectClass);
 712     }
 713
 714     // Find the object instance
 715     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 716     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 717     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 718
 719     // Change its class
 720     PyObject_SetAttrString(obj, "__class__",  unbornObjectClass);
 721
 722 }
 723
 724 static void rsoPass3(const char* name, const char* classname, void* ptr)
 725 {
 726     PyObject* obj;
 727     PyObject* classobj;
 728     PyObject* ptrobj;
 729
 730     // Find the object instance
 731     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 732     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 733     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 734
 735     // Find the class object and put it back in the instance
 736     classobj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(classname));
 737     wxCHECK_RET(classobj != NULL, wxT("Unable to find stock class object"));
 738     PyObject_SetAttrString(obj, "__class__",  classobj);
 739
 740     // Rebuild the .this swigified pointer with the new value of the C++ pointer
 741     ptrobj = wxPyMakeSwigPtr(ptr, wxString(classname, *wxConvCurrent));
 742     PyObject_SetAttrString(obj, "this", ptrobj);
 743     Py_DECREF(ptrobj);
 744 }
 745
 746
 747
 748 void wxPy_ReinitStockObjects(int pass)
 749 {
 750
 751     // If there is already an App object then wxPython is probably embedded in
 752     // a wx C++ application, so there is no need to do all this.
 753     static bool embedded = false;
 754     if ((pass == 1 || pass == 2) && wxTheApp) {
 755         embedded = true;
 756         return;
 757     }
 758     if (pass == 3 && embedded)
 759         return;
 760
 761
 762 #define REINITOBJ(name, classname) \
 763     if (pass == 1) { name = (classname*)0xC0C0C0C0; } \
 764     else if (pass == 2) { rsoPass2(#name); } \
 765     else if (pass == 3) { rsoPass3(#name, #classname, (void*)name); }
 766
 767
 768 #define REINITOBJ2(name, classname) \
 769     if (pass == 1) { } \
 770     else if (pass == 2) { rsoPass2(#name); } \
 771     else if (pass == 3) { rsoPass3(#name, #classname, (void*)&name); }
 772
 773
 774     REINITOBJ(wxNORMAL_FONT, wxFont);
 775     REINITOBJ(wxSMALL_FONT, wxFont);
 776     REINITOBJ(wxITALIC_FONT, wxFont);
 777     REINITOBJ(wxSWISS_FONT, wxFont);
 778
 779     REINITOBJ(wxRED_PEN, wxPen);
 780     REINITOBJ(wxCYAN_PEN, wxPen);
 781     REINITOBJ(wxGREEN_PEN, wxPen);
 782     REINITOBJ(wxBLACK_PEN, wxPen);
 783     REINITOBJ(wxWHITE_PEN, wxPen);
 784     REINITOBJ(wxTRANSPARENT_PEN, wxPen);
 785     REINITOBJ(wxBLACK_DASHED_PEN, wxPen);
 786     REINITOBJ(wxGREY_PEN, wxPen);
 787     REINITOBJ(wxMEDIUM_GREY_PEN, wxPen);
 788     REINITOBJ(wxLIGHT_GREY_PEN, wxPen);
 789
 790     REINITOBJ(wxBLUE_BRUSH, wxBrush);
 791     REINITOBJ(wxGREEN_BRUSH, wxBrush);
 792     REINITOBJ(wxWHITE_BRUSH, wxBrush);
 793     REINITOBJ(wxBLACK_BRUSH, wxBrush);
 794     REINITOBJ(wxTRANSPARENT_BRUSH, wxBrush);
 795     REINITOBJ(wxCYAN_BRUSH, wxBrush);
 796     REINITOBJ(wxRED_BRUSH, wxBrush);
 797     REINITOBJ(wxGREY_BRUSH, wxBrush);
 798     REINITOBJ(wxMEDIUM_GREY_BRUSH, wxBrush);
 799     REINITOBJ(wxLIGHT_GREY_BRUSH, wxBrush);
 800
 801     REINITOBJ(wxBLACK, wxColour);
 802     REINITOBJ(wxWHITE, wxColour);
 803     REINITOBJ(wxRED, wxColour);
 804     REINITOBJ(wxBLUE, wxColour);
 805     REINITOBJ(wxGREEN, wxColour);
 806     REINITOBJ(wxCYAN, wxColour);
 807     REINITOBJ(wxLIGHT_GREY, wxColour);
 808
 809     REINITOBJ(wxSTANDARD_CURSOR, wxCursor);
 810     REINITOBJ(wxHOURGLASS_CURSOR, wxCursor);
 811     REINITOBJ(wxCROSS_CURSOR, wxCursor);
 812
 813     REINITOBJ2(wxNullBitmap, wxBitmap);
 814     REINITOBJ2(wxNullIcon, wxIcon);
 815     REINITOBJ2(wxNullCursor, wxCursor);
 816     REINITOBJ2(wxNullPen, wxPen);
 817     REINITOBJ2(wxNullBrush, wxBrush);
 818     REINITOBJ2(wxNullPalette, wxPalette);
 819     REINITOBJ2(wxNullFont, wxFont);
 820     REINITOBJ2(wxNullColour, wxColour);
 821
 822     REINITOBJ(wxTheFontList, wxFontList);
 823     REINITOBJ(wxThePenList, wxPenList);
 824     REINITOBJ(wxTheBrushList, wxBrushList);
 825     REINITOBJ(wxTheColourDatabase, wxColourDatabase);
 826
 827
 828     REINITOBJ(wxTheClipboard, wxClipboard);
 829     REINITOBJ2(wxDefaultValidator, wxValidator);
 830     REINITOBJ2(wxNullImage, wxImage);
 831     REINITOBJ2(wxNullAcceleratorTable, wxAcceleratorTable);
 832
 833 #undef REINITOBJ
 834 #undef REINITOBJ2
 835 }
 836
 837 //---------------------------------------------------------------------------
 838
 839 // Check for existence of a wxApp, setting an exception if there isn't one.
 840 // This doesn't need to aquire the GIL because it should only be called from
 841 // an %exception before the lock is released.
 842
 843 bool wxPyCheckForApp() {
 844     if (wxTheApp != NULL)
 845         return true;
 846     else {
 847         PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
 848         return false;
 849     }
 850 }
 851
 852 //---------------------------------------------------------------------------
 853
 854
 855 void wxPyClientData_dtor(wxPyClientData* self) {
 856     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 857                                         // may have already garbage collected the object...
 858         bool blocked = wxPyBeginBlockThreads();
 859         Py_DECREF(self->m_obj);
 860         self->m_obj = NULL;
 861         wxPyEndBlockThreads(blocked);
 862     }
 863 }
 864
 865 void wxPyUserData_dtor(wxPyUserData* self) {
 866     if (! wxPyDoingCleanup) {
 867         bool blocked = wxPyBeginBlockThreads();
 868         Py_DECREF(self->m_obj);
 869         self->m_obj = NULL;
 870         wxPyEndBlockThreads(blocked);
 871     }
 872 }
 873
 874
 875 // This is called when an OOR controled object is being destroyed.  Although
 876 // the C++ object is going away there is no way to force the Python object
 877 // (and all references to it) to die too.  This causes problems (crashes) in
 878 // wxPython when a python shadow object attempts to call a C++ method using
 879 // the now bogus pointer... So to try and prevent this we'll do a little black
 880 // magic and change the class of the python instance to a class that will
 881 // raise an exception for any attempt to call methods with it.  See
 882 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 883 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 884
 885     static PyObject* deadObjectClass = NULL;
 886
 887     bool blocked = wxPyBeginBlockThreads();
 888     if (deadObjectClass == NULL) {
 889         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 890         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 891         // will lead to a deadlock when it tries to aquire the GIL again.
 892         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 893         Py_INCREF(deadObjectClass);
 894     }
 895
 896
 897     // Only if there is more than one reference to the object
 898     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 ) {
 899         // bool isInstance = wxPyInstance_Check(self->m_obj);
 900         // TODO same here
 901         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 902
 903         // Call __del__, if there is one.
 904         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 905         if (func) {
 906             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 907             Py_XDECREF(rv);
 908             Py_DECREF(func);
 909         }
 910         if (PyErr_Occurred())
 911             PyErr_Clear();      // just ignore it for now
 912
 913
 914         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 915         if (dict) {
 916             // Clear the instance's dictionary
 917             PyDict_Clear(dict);
 918
 919             // put the name of the old class into the instance, and then reset the
 920             // class to be the dead class.
 921             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 922             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 923             PyDict_SetItemString(dict, "_name", name);
 924             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 925             //Py_INCREF(deadObjectClass);
 926             Py_DECREF(klass);
 927             Py_DECREF(name);
 928         }
 929     }
 930
 931     // m_obj is DECREF'd in the base class dtor...
 932     wxPyEndBlockThreads(blocked);
 933 }
 934
 935
 936 //---------------------------------------------------------------------------
 937 // Stuff used by OOR to find the right wxPython class type to return and to
 938 // build it.
 939
 940
 941 // The pointer type map is used when the "pointer" type name generated by SWIG
 942 // is not the same as the shadow class name, for example wxPyTreeCtrl
 943 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 944 // so we'll just make it a Python dictionary in the wx module's namespace.
 945 // (See __wxSetDictionary)
 946 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 947     if (! wxPyPtrTypeMap)
 948         wxPyPtrTypeMap = PyDict_New();
 949     PyDict_SetItemString(wxPyPtrTypeMap,
 950                          (char*)commonName,
 951                          PyString_FromString((char*)ptrName));
 952 }
 953
 954
 955
 956
 957 PyObject*  wxPyMake_wxObject(wxObject* source, bool checkEvtHandler) {
 958     PyObject* target = NULL;
 959     bool      isEvtHandler = False;
 960
 961     if (source) {
 962         // If it's derived from wxEvtHandler then there may
 963         // already be a pointer to a Python object that we can use
 964         // in the OOR data.
 965         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 966             isEvtHandler = True;
 967             wxEvtHandler* eh = (wxEvtHandler*)source;
 968             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 969             if (data) {
 970                 target = data->m_obj;
 971                 if (target)
 972                     Py_INCREF(target);
 973             }
 974         }
 975
 976         if (! target) {
 977             // Otherwise make it the old fashioned way by making a new shadow
 978             // object and putting this pointer in it.  Look up the class
 979             // heirarchy until we find a class name that is located in the
 980             // python module.
 981             const wxClassInfo* info   = source->GetClassInfo();
 982             wxString           name   = info->GetClassName();
 983             bool               exists = wxPyCheckSwigType(name);
 984             while (info && !exists) {
 985                 info = info->GetBaseClass1();
 986                 name = info->GetClassName();
 987                 exists = wxPyCheckSwigType(name);
 988             }
 989             if (info) {
 990                 target = wxPyConstructObject((void*)source, name, False);
 991                 if (target && isEvtHandler)
 992                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
 993             } else {
 994                 wxString msg(wxT("wxPython class not found for "));
 995                 msg += source->GetClassInfo()->GetClassName();
 996                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
 997                 target = NULL;
 998             }
 999         }
1000     } else {  // source was NULL so return None.
1001         Py_INCREF(Py_None); target = Py_None;
1002     }
1003     return target;
1004 }
1005
1006
1007 PyObject*  wxPyMake_wxSizer(wxSizer* source) {
1008     PyObject* target = NULL;
1009
1010     if (source && wxIsKindOf(source, wxSizer)) {
1011         // If it's derived from wxSizer then there may already be a pointer to
1012         // a Python object that we can use in the OOR data.
1013         wxSizer* sz = (wxSizer*)source;
1014         wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
1015         if (data) {
1016             target = data->m_obj;
1017             if (target)
1018                 Py_INCREF(target);
1019         }
1020     }
1021     if (! target) {
1022         target = wxPyMake_wxObject(source, False);
1023         if (target != Py_None)
1024             ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
1025     }
1026     return target;
1027 }
1028
1029
1030 //---------------------------------------------------------------------------
1031
1032
1033 #ifdef WXP_WITH_THREAD
1034 inline
1035 unsigned long wxPyGetCurrentThreadId() {
1036     return wxThread::GetCurrentId();
1037 }
1038
1039 static wxPyThreadState gs_shutdownTState;
1040
1041 static
1042 wxPyThreadState* wxPyGetThreadState() {
1043     if (wxPyTMutex == NULL) // Python is shutting down...
1044         return &gs_shutdownTState;
1045
1046     unsigned long ctid = wxPyGetCurrentThreadId();
1047     wxPyThreadState* tstate = NULL;
1048
1049     wxPyTMutex->Lock();
1050     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1051         wxPyThreadState& info = wxPyTStates->Item(i);
1052         if (info.tid == ctid) {
1053             tstate = &info;
1054             break;
1055         }
1056     }
1057     wxPyTMutex->Unlock();
1058     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
1059     return tstate;
1060 }
1061
1062
1063 static
1064 void wxPySaveThreadState(PyThreadState* tstate) {
1065     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
1066         gs_shutdownTState.tstate = tstate;
1067         return;
1068     }
1069     unsigned long ctid = wxPyGetCurrentThreadId();
1070     wxPyTMutex->Lock();
1071     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1072         wxPyThreadState& info = wxPyTStates->Item(i);
1073         if (info.tid == ctid) {
1074 #if 0
1075             if (info.tstate != tstate)
1076                 wxLogMessage("*** tstate mismatch!???");
1077 #endif
1078             // info.tstate = tstate;    *** DO NOT update existing ones???
1079             // Normally it will never change, but apparently COM callbacks
1080             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
1081             // tstate which will then be garbage the next time we try to use
1082             // it...
1083             wxPyTMutex->Unlock();
1084             return;
1085         }
1086     }
1087     // not found, so add it...
1088     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
1089     wxPyTMutex->Unlock();
1090 }
1091
1092 #endif
1093
1094
1095
1096 // Calls from Python to wxWindows code are wrapped in calls to these
1097 // functions:
1098
1099 PyThreadState* wxPyBeginAllowThreads() {
1100 #ifdef WXP_WITH_THREAD
1101     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1102     wxPySaveThreadState(saved);
1103     return saved;
1104 #else
1105     return NULL;
1106 #endif
1107 }
1108
1109 void wxPyEndAllowThreads(PyThreadState* saved) {
1110 #ifdef WXP_WITH_THREAD
1111     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1112 #endif
1113 }
1114
1115
1116
1117 // Calls from wxWindows back to Python code, or even any PyObject
1118 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1119
1120 bool wxPyBeginBlockThreads() {
1121 #ifdef WXP_WITH_THREAD
1122     // This works in for 2.3, maybe a good alternative to find the needed tstate?
1123     // PyThreadState *check = PyGILState_GetThisThreadState();
1124
1125     PyThreadState *current = _PyThreadState_Current;
1126
1127     // Only block if there wasn't already a tstate, or if the current one is
1128     // not the one we are wanting to change to.  This should prevent deadlock
1129     // if there are nested calls to wxPyBeginBlockThreads
1130     bool blocked = false;
1131     wxPyThreadState* tstate = wxPyGetThreadState();
1132     if (current != tstate->tstate) {
1133         PyEval_RestoreThread(tstate->tstate);
1134         blocked = true;
1135     }
1136     return blocked;
1137 #endif
1138 }
1139
1140
1141 void wxPyEndBlockThreads(bool blocked) {
1142 #ifdef WXP_WITH_THREAD
1143     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1144     // The value of blocked passed in needs to be the same as that returned
1145     // from wxPyBeginBlockThreads at the same nesting level.
1146     if ( blocked ) {
1147         PyEval_SaveThread();
1148     }
1149 #endif
1150 }
1151
1152
1153 //---------------------------------------------------------------------------
1154 // wxPyInputStream and wxPyCBInputStream methods
1155
1156
1157 void wxPyInputStream::close() {
1158     /* do nothing for now */
1159 }
1160
1161 void wxPyInputStream::flush() {
1162     /* do nothing for now */
1163 }
1164
1165 bool wxPyInputStream::eof() {
1166     if (m_wxis)
1167         return m_wxis->Eof();
1168     else
1169         return True;
1170 }
1171
1172 wxPyInputStream::~wxPyInputStream() {
1173     /* do nothing */
1174 }
1175
1176
1177
1178
1179 PyObject* wxPyInputStream::read(int size) {
1180     PyObject* obj = NULL;
1181     wxMemoryBuffer buf;
1182     const int BUFSIZE = 1024;
1183
1184     // check if we have a real wxInputStream to work with
1185     if (!m_wxis) {
1186         bool blocked = wxPyBeginBlockThreads();
1187         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1188         wxPyEndBlockThreads(blocked);
1189         return NULL;
1190     }
1191
1192     if (size < 0) {
1193         // read while bytes are available on the stream
1194         while ( m_wxis->CanRead() ) {
1195             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1196             buf.UngetAppendBuf(m_wxis->LastRead());
1197         }
1198
1199     } else {  // Read only size number of characters
1200         m_wxis->Read(buf.GetWriteBuf(size), size);
1201         buf.UngetWriteBuf(m_wxis->LastRead());
1202     }
1203
1204     // error check
1205     bool blocked = wxPyBeginBlockThreads();
1206     wxStreamError err = m_wxis->GetLastError();
1207     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1208         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1209     }
1210     else {
1211         // We use only strings for the streams, not unicode
1212         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1213     }
1214     wxPyEndBlockThreads(blocked);
1215     return obj;
1216 }
1217
1218
1219 PyObject* wxPyInputStream::readline(int size) {
1220     PyObject* obj = NULL;
1221     wxMemoryBuffer buf;
1222     int i;
1223     char ch;
1224
1225     // check if we have a real wxInputStream to work with
1226     if (!m_wxis) {
1227         bool blocked = wxPyBeginBlockThreads();
1228         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1229         wxPyEndBlockThreads(blocked);
1230         return NULL;
1231     }
1232
1233     // read until \n or byte limit reached
1234     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1235         ch = m_wxis->GetC();
1236         buf.AppendByte(ch);
1237     }
1238
1239     // errorcheck
1240     bool blocked = wxPyBeginBlockThreads();
1241     wxStreamError err = m_wxis->GetLastError();
1242     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1243         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1244     }
1245     else {
1246         // We use only strings for the streams, not unicode
1247         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1248     }
1249     wxPyEndBlockThreads(blocked);
1250     return obj;
1251 }
1252
1253
1254 PyObject* wxPyInputStream::readlines(int sizehint) {
1255     PyObject* pylist;
1256
1257     // check if we have a real wxInputStream to work with
1258     if (!m_wxis) {
1259         bool blocked = wxPyBeginBlockThreads();
1260         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1261         wxPyEndBlockThreads(blocked);
1262         return NULL;
1263     }
1264
1265     // init list
1266     bool blocked = wxPyBeginBlockThreads();
1267     pylist = PyList_New(0);
1268     wxPyEndBlockThreads(blocked);
1269
1270     if (!pylist) {
1271         bool blocked = wxPyBeginBlockThreads();
1272         PyErr_NoMemory();
1273         wxPyEndBlockThreads(blocked);
1274         return NULL;
1275     }
1276
1277     // read sizehint bytes or until EOF
1278     int i;
1279     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1280         PyObject* s = this->readline();
1281         if (s == NULL) {
1282             bool blocked = wxPyBeginBlockThreads();
1283             Py_DECREF(pylist);
1284             wxPyEndBlockThreads(blocked);
1285             return NULL;
1286         }
1287         bool blocked = wxPyBeginBlockThreads();
1288         PyList_Append(pylist, s);
1289         i += PyString_Size(s);
1290         wxPyEndBlockThreads(blocked);
1291     }
1292
1293     // error check
1294     wxStreamError err = m_wxis->GetLastError();
1295     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1296         bool blocked = wxPyBeginBlockThreads();
1297         Py_DECREF(pylist);
1298         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1299         wxPyEndBlockThreads(blocked);
1300         return NULL;
1301     }
1302
1303     return pylist;
1304 }
1305
1306
1307 void wxPyInputStream::seek(int offset, int whence) {
1308     if (m_wxis)
1309         m_wxis->SeekI(offset, wxSeekMode(whence));
1310 }
1311
1312 int wxPyInputStream::tell(){
1313     if (m_wxis)
1314         return m_wxis->TellI();
1315     else return 0;
1316 }
1317
1318
1319
1320
1321 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1322     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1323 {}
1324
1325
1326 wxPyCBInputStream::~wxPyCBInputStream() {
1327     bool blocked;
1328     if (m_block) blocked = wxPyBeginBlockThreads();
1329     Py_XDECREF(m_read);
1330     Py_XDECREF(m_seek);
1331     Py_XDECREF(m_tell);
1332     if (m_block) wxPyEndBlockThreads(blocked);
1333 }
1334
1335
1336 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1337     bool blocked;
1338     if (block) blocked = wxPyBeginBlockThreads();
1339
1340     PyObject* read = getMethod(py, "read");
1341     PyObject* seek = getMethod(py, "seek");
1342     PyObject* tell = getMethod(py, "tell");
1343
1344     if (!read) {
1345         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1346         Py_XDECREF(read);
1347         Py_XDECREF(seek);
1348         Py_XDECREF(tell);
1349         if (block) wxPyEndBlockThreads(blocked);
1350         return NULL;
1351     }
1352
1353     if (block) wxPyEndBlockThreads(blocked);
1354     return new wxPyCBInputStream(read, seek, tell, block);
1355 }
1356
1357
1358 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1359     return wxPyCBInputStream::create(py, block);
1360 }
1361
1362 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1363     if (!PyObject_HasAttrString(py, name))
1364         return NULL;
1365     PyObject* o = PyObject_GetAttrString(py, name);
1366     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1367         Py_DECREF(o);
1368         return NULL;
1369     }
1370     return o;
1371 }
1372
1373
1374 size_t wxPyCBInputStream::GetSize() const {
1375     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1376     if (m_seek && m_tell) {
1377         off_t temp = self->OnSysTell();
1378         off_t ret = self->OnSysSeek(0, wxFromEnd);
1379         self->OnSysSeek(temp, wxFromStart);
1380         return ret;
1381     }
1382     else
1383         return 0;
1384 }
1385
1386
1387 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1388     if (bufsize == 0)
1389         return 0;
1390
1391     bool blocked = wxPyBeginBlockThreads();
1392     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1393     PyObject* result = PyEval_CallObject(m_read, arglist);
1394     Py_DECREF(arglist);
1395
1396     size_t o = 0;
1397     if ((result != NULL) && PyString_Check(result)) {
1398         o = PyString_Size(result);
1399         if (o == 0)
1400             m_lasterror = wxSTREAM_EOF;
1401         if (o > bufsize)
1402             o = bufsize;
1403         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1404         Py_DECREF(result);
1405
1406     }
1407     else
1408         m_lasterror = wxSTREAM_READ_ERROR;
1409     wxPyEndBlockThreads(blocked);
1410     return o;
1411 }
1412
1413 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1414     m_lasterror = wxSTREAM_WRITE_ERROR;
1415     return 0;
1416 }
1417
1418 off_t wxPyCBInputStream::OnSysSeek(off_t off, wxSeekMode mode) {
1419     bool blocked = wxPyBeginBlockThreads();
1420 #ifdef _LARGE_FILES
1421     // off_t is a 64-bit value...
1422     PyObject* arglist = Py_BuildValue("(Li)", off, mode);
1423 #else
1424     PyObject* arglist = Py_BuildValue("(ii)", off, mode);
1425 #endif
1426     PyObject* result = PyEval_CallObject(m_seek, arglist);
1427     Py_DECREF(arglist);
1428     Py_XDECREF(result);
1429     wxPyEndBlockThreads(blocked);
1430     return OnSysTell();
1431 }
1432
1433
1434 off_t wxPyCBInputStream::OnSysTell() const {
1435     bool blocked = wxPyBeginBlockThreads();
1436     PyObject* arglist = Py_BuildValue("()");
1437     PyObject* result = PyEval_CallObject(m_tell, arglist);
1438     Py_DECREF(arglist);
1439     off_t o = 0;
1440     if (result != NULL) {
1441 #ifdef _LARGE_FILES
1442         if (PyLong_Check(result))
1443             o = PyLong_AsLongLong(result);
1444         else
1445 #endif
1446             o = PyInt_AsLong(result);
1447         Py_DECREF(result);
1448     };
1449     wxPyEndBlockThreads(blocked);
1450     return o;
1451 }
1452
1453 //----------------------------------------------------------------------
1454
1455 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1456
1457 wxPyCallback::wxPyCallback(PyObject* func) {
1458     m_func = func;
1459     Py_INCREF(m_func);
1460 }
1461
1462 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1463     m_func = other.m_func;
1464     Py_INCREF(m_func);
1465 }
1466
1467 wxPyCallback::~wxPyCallback() {
1468     bool blocked = wxPyBeginBlockThreads();
1469     Py_DECREF(m_func);
1470     wxPyEndBlockThreads(blocked);
1471 }
1472
1473
1474 #define wxPy_PRECALLINIT     "_preCallInit"
1475 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1476
1477 // This function is used for all events destined for Python event handlers.
1478 void wxPyCallback::EventThunker(wxEvent& event) {
1479     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1480     PyObject*       func = cb->m_func;
1481     PyObject*       result;
1482     PyObject*       arg;
1483     PyObject*       tuple;
1484     bool            checkSkip = False;
1485
1486     bool blocked = wxPyBeginBlockThreads();
1487     wxString className = event.GetClassInfo()->GetClassName();
1488
1489     // If the event is one of these types then pass the original
1490     // event object instead of the one passed to us.
1491     if ( className == wxT("wxPyEvent") ) {
1492         arg =       ((wxPyEvent*)&event)->GetSelf();
1493         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1494     }
1495     else if ( className == wxT("wxPyCommandEvent") ) {
1496         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1497         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1498     }
1499     else {
1500         arg = wxPyConstructObject((void*)&event, className);
1501     }
1502
1503     if (!arg) {
1504         PyErr_Print();
1505     } else {
1506         // "intern" the pre/post method names to speed up the HasAttr
1507         static PyObject* s_preName  = NULL;
1508         static PyObject* s_postName = NULL;
1509         if (s_preName == NULL) {
1510             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1511             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1512         }
1513
1514         // Check if the event object needs some preinitialization
1515         if (PyObject_HasAttr(arg, s_preName)) {
1516             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1517             if ( result ) {
1518                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1519                 PyErr_Clear();       // Just in case...
1520             } else {
1521                 PyErr_Print();
1522             }
1523         }
1524
1525         // Call the event handler, passing the event object
1526         tuple = PyTuple_New(1);
1527         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1528         result = PyEval_CallObject(func, tuple);
1529         if ( result ) {
1530             Py_DECREF(result);   // result is ignored, but we still need to decref it
1531             PyErr_Clear();       // Just in case...
1532         } else {
1533             PyErr_Print();
1534         }
1535
1536         // Check if the event object needs some post cleanup
1537         if (PyObject_HasAttr(arg, s_postName)) {
1538             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1539             if ( result ) {
1540                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1541                 PyErr_Clear();       // Just in case...
1542             } else {
1543                 PyErr_Print();
1544             }
1545         }
1546
1547         if ( checkSkip ) {
1548             // if the event object was one of our special types and
1549             // it had been cloned, then we need to extract the Skipped
1550             // value from the original and set it in the clone.
1551             result = PyObject_CallMethod(arg, "GetSkipped", "");
1552             if ( result ) {
1553                 event.Skip(PyInt_AsLong(result));
1554                 Py_DECREF(result);
1555             } else {
1556                 PyErr_Print();
1557             }
1558         }
1559         Py_DECREF(tuple);
1560     }
1561     wxPyEndBlockThreads(blocked);
1562 }
1563
1564
1565 //----------------------------------------------------------------------
1566
1567 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1568       m_lastFound = NULL;
1569       m_self = other.m_self;
1570       m_class = other.m_class;
1571       if (m_self) {
1572           Py_INCREF(m_self);
1573           Py_INCREF(m_class);
1574       }
1575 }
1576
1577
1578 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1579     m_self = self;
1580     m_class = klass;
1581     m_incRef = incref;
1582     if (incref) {
1583         Py_INCREF(m_self);
1584         Py_INCREF(m_class);
1585     }
1586 }
1587
1588
1589 #if PYTHON_API_VERSION >= 1011
1590
1591 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1592 // in which the method was defined.  Starting with 2.2 it returns
1593 // "class that asked for the method" which seems totally bogus to me
1594 // but apprently it fixes some obscure problem waiting to happen in
1595 // Python.  Since the API was not documented Guido and the gang felt
1596 // safe in changing it.  Needless to say that totally screwed up the
1597 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1598 // code to find the class where the method is actually defined...
1599
1600 static
1601 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1602 {
1603     int i, n;
1604
1605     if (PyType_Check(klass)) {      // new style classes
1606         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1607         PyTypeObject* type = (PyTypeObject*)klass;
1608         PyObject *mro, *res, *base, *dict;
1609         /* Look in tp_dict of types in MRO */
1610         mro = type->tp_mro;
1611         assert(PyTuple_Check(mro));
1612         n = PyTuple_GET_SIZE(mro);
1613         for (i = 0; i < n; i++) {
1614             base = PyTuple_GET_ITEM(mro, i);
1615             if (PyClass_Check(base))
1616                 dict = ((PyClassObject *)base)->cl_dict;
1617             else {
1618                 assert(PyType_Check(base));
1619                 dict = ((PyTypeObject *)base)->tp_dict;
1620             }
1621             assert(dict && PyDict_Check(dict));
1622             res = PyDict_GetItem(dict, name);
1623             if (res != NULL)
1624                 return base;
1625         }
1626         return NULL;
1627     }
1628
1629     else if (PyClass_Check(klass)) { // old style classes
1630         // This code is borrowed/adapted from class_lookup in classobject.c
1631         PyClassObject* cp = (PyClassObject*)klass;
1632         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1633         if (value != NULL) {
1634             return (PyObject*)cp;
1635         }
1636         n = PyTuple_Size(cp->cl_bases);
1637         for (i = 0; i < n; i++) {
1638             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1639             PyObject *v = PyFindClassWithAttr(base, name);
1640             if (v != NULL)
1641                 return v;
1642         }
1643         return NULL;
1644     }
1645     return NULL;
1646 }
1647 #endif
1648
1649
1650 static
1651 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
1652 {
1653     PyObject* mgc = PyMethod_GET_CLASS(method);
1654
1655 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1656     return mgc;
1657 #else                             // 2.2 and after, the hard way...
1658
1659     PyObject* nameo = PyString_FromString(name);
1660     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
1661     Py_DECREF(nameo);
1662     return klass;
1663 #endif
1664 }
1665
1666
1667
1668 bool wxPyCallbackHelper::findCallback(const char* name) const {
1669     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1670     self->m_lastFound = NULL;
1671
1672     // If the object (m_self) has an attibute of the given name...
1673     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
1674         PyObject *method, *klass;
1675         method = PyObject_GetAttrString(m_self, (char*)name);
1676
1677         // ...and if that attribute is a method, and if that method's class is
1678         // not from a base class...
1679         if (PyMethod_Check(method) &&
1680             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
1681             ((klass == m_class) || PyObject_IsSubclass(klass, m_class))) {
1682
1683             // ...then we'll save a pointer to the method so callCallback can call it.
1684             self->m_lastFound = method;
1685         }
1686         else {
1687             Py_DECREF(method);
1688         }
1689     }
1690     return m_lastFound != NULL;
1691 }
1692
1693
1694 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1695     PyObject*   result;
1696     int         retval = False;
1697
1698     result = callCallbackObj(argTuple);
1699     if (result) {                       // Assumes an integer return type...
1700         retval = PyInt_AsLong(result);
1701         Py_DECREF(result);
1702         PyErr_Clear();                  // forget about it if it's not...
1703     }
1704     return retval;
1705 }
1706
1707 // Invoke the Python callable object, returning the raw PyObject return
1708 // value.  Caller should DECREF the return value and also manage the GIL.
1709 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1710     PyObject* result;
1711
1712     // Save a copy of the pointer in case the callback generates another
1713     // callback.  In that case m_lastFound will have a different value when
1714     // it gets back here...
1715     PyObject* method = m_lastFound;
1716
1717     result = PyEval_CallObject(method, argTuple);
1718     Py_DECREF(argTuple);
1719     Py_DECREF(method);
1720     if (!result) {
1721         PyErr_Print();
1722     }
1723     return result;
1724 }
1725
1726
1727 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1728     cbh.setSelf(self, klass, incref);
1729 }
1730
1731 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
1732     return cbh.findCallback(name);
1733 }
1734
1735 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1736     return cbh.callCallback(argTuple);
1737 }
1738
1739 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1740     return cbh.callCallbackObj(argTuple);
1741 }
1742
1743
1744 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1745     if (cbh->m_incRef) {
1746         bool blocked = wxPyBeginBlockThreads();
1747         Py_XDECREF(cbh->m_self);
1748         Py_XDECREF(cbh->m_class);
1749         wxPyEndBlockThreads(blocked);
1750     }
1751 }
1752
1753 //---------------------------------------------------------------------------
1754 //---------------------------------------------------------------------------
1755 // These event classes can be derived from in Python and passed through the event
1756 // system without losing anything.  They do this by keeping a reference to
1757 // themselves and some special case handling in wxPyCallback::EventThunker.
1758
1759
1760 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1761     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1762     //Py_INCREF(m_self);        //      circular loops...
1763     m_cloned = False;
1764 }
1765
1766 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1767     bool blocked = wxPyBeginBlockThreads();
1768     if (m_cloned)
1769         Py_DECREF(m_self);
1770     wxPyEndBlockThreads(blocked);
1771 }
1772
1773 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1774     bool blocked = wxPyBeginBlockThreads();
1775     if (m_cloned)
1776         Py_DECREF(m_self);
1777     m_self = self;
1778     if (clone) {
1779         Py_INCREF(m_self);
1780         m_cloned = True;
1781     }
1782     wxPyEndBlockThreads(blocked);
1783 }
1784
1785 PyObject* wxPyEvtSelfRef::GetSelf() const {
1786     Py_INCREF(m_self);
1787     return m_self;
1788 }
1789
1790
1791 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1792 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1793
1794
1795 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1796     : wxEvent(winid, commandType) {
1797 }
1798
1799
1800 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1801     : wxEvent(evt)
1802 {
1803     SetSelf(evt.m_self, True);
1804 }
1805
1806
1807 wxPyEvent::~wxPyEvent() {
1808 }
1809
1810
1811 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1812     : wxCommandEvent(commandType, id) {
1813 }
1814
1815
1816 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1817     : wxCommandEvent(evt)
1818 {
1819     SetSelf(evt.m_self, True);
1820 }
1821
1822
1823 wxPyCommandEvent::~wxPyCommandEvent() {
1824 }
1825
1826
1827
1828
1829
1830 //---------------------------------------------------------------------------
1831 //---------------------------------------------------------------------------
1832 // Convert a wxList to a Python List, only works for lists of wxObjects
1833
1834 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1835     wxList*     list = (wxList*)listbase;  // this is probably bad...
1836     PyObject*   pyList;
1837     PyObject*   pyObj;
1838     wxObject*   wxObj;
1839     wxNode*     node = list->GetFirst();
1840
1841     bool blocked = wxPyBeginBlockThreads();
1842     pyList = PyList_New(0);
1843     while (node) {
1844         wxObj = node->GetData();
1845         pyObj = wxPyMake_wxObject(wxObj);
1846         PyList_Append(pyList, pyObj);
1847         node = node->GetNext();
1848     }
1849     wxPyEndBlockThreads(blocked);
1850     return pyList;
1851 }
1852
1853 //----------------------------------------------------------------------
1854
1855 long wxPyGetWinHandle(wxWindow* win) {
1856
1857 #ifdef __WXMSW__
1858     return (long)win->GetHandle();
1859 #endif
1860
1861 #if defined(__WXGTK__) || defined(__WXX11)
1862     return (long)GetXWindow(win);
1863 #endif
1864
1865 #ifdef __WXMAC__
1866     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
1867     return (long)win->GetHandle();
1868 #endif
1869
1870     return 0;
1871 }
1872
1873 //----------------------------------------------------------------------
1874 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1875 // included in every file over and over again...
1876
1877 wxString* wxString_in_helper(PyObject* source) {
1878     wxString* target = NULL;
1879
1880     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1881         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
1882         return NULL;
1883     }
1884 #if wxUSE_UNICODE
1885     PyObject* uni = source;
1886     if (PyString_Check(source)) {
1887         uni = PyUnicode_FromObject(source);
1888         if (PyErr_Occurred()) return NULL;
1889     }
1890     target = new wxString();
1891     size_t len = PyUnicode_GET_SIZE(uni);
1892     if (len) {
1893         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target->GetWriteBuf(len), len);
1894         target->UngetWriteBuf();
1895     }
1896
1897     if (PyString_Check(source))
1898         Py_DECREF(uni);
1899 #else
1900     char* tmpPtr; int tmpSize;
1901     if (PyString_AsStringAndSize(source, &tmpPtr, &tmpSize) == -1) {
1902         PyErr_SetString(PyExc_TypeError, "Unable to convert string");
1903         return NULL;
1904     }
1905     target = new wxString(tmpPtr, tmpSize);
1906 #endif // wxUSE_UNICODE
1907
1908     return target;
1909 }
1910
1911
1912 // Similar to above except doesn't use "new" and doesn't set an exception
1913 wxString Py2wxString(PyObject* source)
1914 {
1915     wxString target;
1916
1917 #if wxUSE_UNICODE
1918     // Convert to a unicode object, if not already, then to a wxString
1919     PyObject* uni = source;
1920     if (!PyUnicode_Check(source)) {
1921         uni = PyUnicode_FromObject(source);
1922         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
1923     }
1924     size_t len = PyUnicode_GET_SIZE(uni);
1925     if (len) {
1926         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target.GetWriteBuf(len), len);
1927         target.UngetWriteBuf();
1928     }
1929
1930     if (!PyUnicode_Check(source))
1931         Py_DECREF(uni);
1932 #else
1933     // Convert to a string object if it isn't already, then to wxString
1934     PyObject* str = source;
1935     if (!PyString_Check(source)) {
1936         str = PyObject_Str(source);
1937         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1938     }
1939     char* tmpPtr; int tmpSize;
1940     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1941     target = wxString(tmpPtr, tmpSize);
1942
1943     if (!PyString_Check(source))
1944         Py_DECREF(str);
1945 #endif // wxUSE_UNICODE
1946
1947     return target;
1948 }
1949
1950
1951 // Make either a Python String or Unicode object, depending on build mode
1952 PyObject* wx2PyString(const wxString& src)
1953 {
1954     PyObject* str;
1955 #if wxUSE_UNICODE
1956     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
1957 #else
1958     str = PyString_FromStringAndSize(src.c_str(), src.Len());
1959 #endif
1960     return str;
1961 }
1962
1963
1964 //----------------------------------------------------------------------
1965
1966
1967 byte* byte_LIST_helper(PyObject* source) {
1968     if (!PyList_Check(source)) {
1969         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1970         return NULL;
1971     }
1972     int count = PyList_Size(source);
1973     byte* temp = new byte[count];
1974     if (! temp) {
1975         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1976         return NULL;
1977     }
1978     for (int x=0; x<count; x++) {
1979         PyObject* o = PyList_GetItem(source, x);
1980         if (! PyInt_Check(o)) {
1981             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1982             return NULL;
1983         }
1984         temp[x] = (byte)PyInt_AsLong(o);
1985     }
1986     return temp;
1987 }
1988
1989
1990 int* int_LIST_helper(PyObject* source) {
1991     if (!PyList_Check(source)) {
1992         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1993         return NULL;
1994     }
1995     int count = PyList_Size(source);
1996     int* temp = new int[count];
1997     if (! temp) {
1998         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1999         return NULL;
2000     }
2001     for (int x=0; x<count; x++) {
2002         PyObject* o = PyList_GetItem(source, x);
2003         if (! PyInt_Check(o)) {
2004             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2005             return NULL;
2006         }
2007         temp[x] = PyInt_AsLong(o);
2008     }
2009     return temp;
2010 }
2011
2012
2013 long* long_LIST_helper(PyObject* source) {
2014     if (!PyList_Check(source)) {
2015         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2016         return NULL;
2017     }
2018     int count = PyList_Size(source);
2019     long* temp = new long[count];
2020     if (! temp) {
2021         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2022         return NULL;
2023     }
2024     for (int x=0; x<count; x++) {
2025         PyObject* o = PyList_GetItem(source, x);
2026         if (! PyInt_Check(o)) {
2027             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2028             return NULL;
2029         }
2030         temp[x] = PyInt_AsLong(o);
2031     }
2032     return temp;
2033 }
2034
2035
2036 char** string_LIST_helper(PyObject* source) {
2037     if (!PyList_Check(source)) {
2038         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2039         return NULL;
2040     }
2041     int count = PyList_Size(source);
2042     char** temp = new char*[count];
2043     if (! temp) {
2044         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2045         return NULL;
2046     }
2047     for (int x=0; x<count; x++) {
2048         PyObject* o = PyList_GetItem(source, x);
2049         if (! PyString_Check(o)) {
2050             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2051             return NULL;
2052         }
2053         temp[x] = PyString_AsString(o);
2054     }
2055     return temp;
2056 }
2057
2058 //--------------------------------
2059 // Part of patch from Tim Hochberg
2060 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
2061     if (PyInt_Check(o1) && PyInt_Check(o2)) {
2062         point->x = PyInt_AS_LONG(o1);
2063         point->y = PyInt_AS_LONG(o2);
2064         return True;
2065     }
2066     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
2067         point->x = (int)PyFloat_AS_DOUBLE(o1);
2068         point->y = (int)PyFloat_AS_DOUBLE(o2);
2069         return True;
2070     }
2071     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {  // TODO: Why???
2072         // Disallow instances because they can cause havok
2073         return False;
2074     }
2075     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
2076         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
2077         point->x = PyInt_AsLong(o1);
2078         point->y = PyInt_AsLong(o2);
2079         return True;
2080     }
2081     return False;
2082 }
2083
2084
2085 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
2086     // Putting all of the declarations here allows
2087     // us to put the error handling all in one place.
2088     int x;
2089     wxPoint* temp;
2090     PyObject *o, *o1, *o2;
2091     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2092
2093     if (!PySequence_Check(source)) {
2094         goto error0;
2095     }
2096
2097     // The length of the sequence is returned in count.
2098     *count = PySequence_Length(source);
2099     if (*count < 0) {
2100         goto error0;
2101     }
2102
2103     temp = new wxPoint[*count];
2104     if (!temp) {
2105         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2106         return NULL;
2107     }
2108     for (x=0; x<*count; x++) {
2109         // Get an item: try fast way first.
2110         if (isFast) {
2111             o = PySequence_Fast_GET_ITEM(source, x);
2112         }
2113         else {
2114             o = PySequence_GetItem(source, x);
2115             if (o == NULL) {
2116                 goto error1;
2117             }
2118         }
2119
2120         // Convert o to wxPoint.
2121         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2122             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2123             o1 = PySequence_Fast_GET_ITEM(o, 0);
2124             o2 = PySequence_Fast_GET_ITEM(o, 1);
2125             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2126                 goto error2;
2127             }
2128         }
2129         else if (wxPySwigInstance_Check(o)) {
2130             wxPoint* pt;
2131             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2132                 goto error2;
2133             }
2134             temp[x] = *pt;
2135         }
2136         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2137             o1 = PySequence_GetItem(o, 0);
2138             o2 = PySequence_GetItem(o, 1);
2139             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2140                 goto error3;
2141             }
2142             Py_DECREF(o1);
2143             Py_DECREF(o2);
2144         }
2145         else {
2146             goto error2;
2147         }
2148         // Clean up.
2149         if (!isFast)
2150             Py_DECREF(o);
2151     }
2152     return temp;
2153
2154 error3:
2155     Py_DECREF(o1);
2156     Py_DECREF(o2);
2157 error2:
2158     if (!isFast)
2159         Py_DECREF(o);
2160 error1:
2161     delete [] temp;
2162 error0:
2163     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2164     return NULL;
2165 }
2166 // end of patch
2167 //------------------------------
2168
2169
2170 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2171     if (!PyList_Check(source)) {
2172         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2173         return NULL;
2174     }
2175     int count = PyList_Size(source);
2176     wxBitmap** temp = new wxBitmap*[count];
2177     if (! temp) {
2178         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2179         return NULL;
2180     }
2181     for (int x=0; x<count; x++) {
2182         PyObject* o = PyList_GetItem(source, x);
2183         if (wxPySwigInstance_Check(o)) {
2184             wxBitmap*    pt;
2185             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2186                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2187                 return NULL;
2188             }
2189             temp[x] = pt;
2190         }
2191         else {
2192             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2193             return NULL;
2194         }
2195     }
2196     return temp;
2197 }
2198
2199
2200
2201 wxString* wxString_LIST_helper(PyObject* source) {
2202     if (!PyList_Check(source)) {
2203         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2204         return NULL;
2205     }
2206     int count = PyList_Size(source);
2207     wxString* temp = new wxString[count];
2208     if (! temp) {
2209         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2210         return NULL;
2211     }
2212     for (int x=0; x<count; x++) {
2213         PyObject* o = PyList_GetItem(source, x);
2214 #if PYTHON_API_VERSION >= 1009
2215         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2216             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2217             return NULL;
2218         }
2219 #else
2220         if (! PyString_Check(o)) {
2221             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2222             return NULL;
2223         }
2224 #endif
2225
2226         wxString* pStr = wxString_in_helper(o);
2227         temp[x] = *pStr;
2228         delete pStr;
2229     }
2230     return temp;
2231 }
2232
2233
2234 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2235     if (!PyList_Check(source)) {
2236         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2237         return NULL;
2238     }
2239     int count                = PyList_Size(source);
2240     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2241     if (! temp) {
2242         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2243         return NULL;
2244     }
2245     for (int x=0; x<count; x++) {
2246         PyObject* o = PyList_GetItem(source, x);
2247         if (wxPySwigInstance_Check(o)) {
2248             wxAcceleratorEntry* ae;
2249             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2250                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2251                 return NULL;
2252             }
2253             temp[x] = *ae;
2254         }
2255         else if (PyTuple_Check(o)) {
2256             PyObject* o1 = PyTuple_GetItem(o, 0);
2257             PyObject* o2 = PyTuple_GetItem(o, 1);
2258             PyObject* o3 = PyTuple_GetItem(o, 2);
2259             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2260         }
2261         else {
2262             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2263             return NULL;
2264         }
2265     }
2266     return temp;
2267 }
2268
2269
2270 wxPen** wxPen_LIST_helper(PyObject* source) {
2271     if (!PyList_Check(source)) {
2272         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2273         return NULL;
2274     }
2275     int count = PyList_Size(source);
2276     wxPen** temp = new wxPen*[count];
2277     if (!temp) {
2278         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2279         return NULL;
2280     }
2281     for (int x=0; x<count; x++) {
2282         PyObject* o = PyList_GetItem(source, x);
2283         if (wxPySwigInstance_Check(o)) {
2284             wxPen*  pt;
2285             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2286                 delete temp;
2287                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2288                 return NULL;
2289             }
2290             temp[x] = pt;
2291         }
2292         else {
2293             delete temp;
2294             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2295             return NULL;
2296         }
2297     }
2298     return temp;
2299 }
2300
2301
2302 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2303     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2304     PyObject *o1, *o2;
2305
2306     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2307         return False;
2308
2309     if (isFast) {
2310         o1 = PySequence_Fast_GET_ITEM(source, 0);
2311         o2 = PySequence_Fast_GET_ITEM(source, 1);
2312     }
2313     else {
2314         o1 = PySequence_GetItem(source, 0);
2315         o2 = PySequence_GetItem(source, 1);
2316     }
2317
2318     *i1 = PyInt_AsLong(o1);
2319     *i2 = PyInt_AsLong(o2);
2320
2321     if (! isFast) {
2322         Py_DECREF(o1);
2323         Py_DECREF(o2);
2324     }
2325     return True;
2326 }
2327
2328
2329 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2330     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2331     PyObject *o1, *o2, *o3, *o4;
2332
2333     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2334         return False;
2335
2336     if (isFast) {
2337         o1 = PySequence_Fast_GET_ITEM(source, 0);
2338         o2 = PySequence_Fast_GET_ITEM(source, 1);
2339         o3 = PySequence_Fast_GET_ITEM(source, 2);
2340         o4 = PySequence_Fast_GET_ITEM(source, 3);
2341     }
2342     else {
2343         o1 = PySequence_GetItem(source, 0);
2344         o2 = PySequence_GetItem(source, 1);
2345         o3 = PySequence_GetItem(source, 2);
2346         o4 = PySequence_GetItem(source, 3);
2347     }
2348
2349     *i1 = PyInt_AsLong(o1);
2350     *i2 = PyInt_AsLong(o2);
2351     *i3 = PyInt_AsLong(o3);
2352     *i4 = PyInt_AsLong(o4);
2353
2354     if (! isFast) {
2355         Py_DECREF(o1);
2356         Py_DECREF(o2);
2357         Py_DECREF(o3);
2358         Py_DECREF(o4);
2359     }
2360     return True;
2361 }
2362
2363
2364 //----------------------------------------------------------------------
2365
2366 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2367 {
2368     void* ptr;
2369
2370     if (wxPySwigInstance_Check(source) &&
2371         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2372         return True;
2373
2374     PyErr_Clear();
2375     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2376         return True;
2377
2378     return False;
2379 }
2380
2381 bool wxSize_helper(PyObject* source, wxSize** obj)
2382 {
2383     if (source == Py_None) {
2384         **obj = wxSize(-1,-1);
2385         return True;
2386     }
2387     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2388 }
2389
2390
2391 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2392 {
2393     if (source == Py_None) {
2394         **obj = wxPoint(-1,-1);
2395         return True;
2396     }
2397     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2398 }
2399
2400
2401
2402 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2403
2404     if (source == Py_None) {
2405         **obj = wxRealPoint(-1,-1);
2406         return True;
2407     }
2408
2409     // If source is an object instance then it may already be the right type
2410     if (wxPySwigInstance_Check(source)) {
2411         wxRealPoint* ptr;
2412         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2413             goto error;
2414         *obj = ptr;
2415         return True;
2416     }
2417     // otherwise a 2-tuple of floats is expected
2418     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2419         PyObject* o1 = PySequence_GetItem(source, 0);
2420         PyObject* o2 = PySequence_GetItem(source, 1);
2421         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2422             Py_DECREF(o1);
2423             Py_DECREF(o2);
2424             goto error;
2425         }
2426         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2427         Py_DECREF(o1);
2428         Py_DECREF(o2);
2429         return True;
2430     }
2431
2432  error:
2433     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2434     return False;
2435 }
2436
2437
2438
2439 bool wxRect_helper(PyObject* source, wxRect** obj) {
2440
2441     if (source == Py_None) {
2442         **obj = wxRect(-1,-1,-1,-1);
2443         return True;
2444     }
2445
2446     // If source is an object instance then it may already be the right type
2447     if (wxPySwigInstance_Check(source)) {
2448         wxRect* ptr;
2449         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2450             goto error;
2451         *obj = ptr;
2452         return True;
2453     }
2454     // otherwise a 4-tuple of integers is expected
2455     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2456         PyObject* o1 = PySequence_GetItem(source, 0);
2457         PyObject* o2 = PySequence_GetItem(source, 1);
2458         PyObject* o3 = PySequence_GetItem(source, 2);
2459         PyObject* o4 = PySequence_GetItem(source, 3);
2460         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2461             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2462             Py_DECREF(o1);
2463             Py_DECREF(o2);
2464             Py_DECREF(o3);
2465             Py_DECREF(o4);
2466             goto error;
2467         }
2468         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2469                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2470         Py_DECREF(o1);
2471         Py_DECREF(o2);
2472         Py_DECREF(o3);
2473         Py_DECREF(o4);
2474         return True;
2475     }
2476
2477  error:
2478     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2479     return False;
2480 }
2481
2482
2483
2484 bool wxColour_helper(PyObject* source, wxColour** obj) {
2485
2486     if (source == Py_None) {
2487         **obj = wxNullColour;
2488         return True;
2489     }
2490
2491     // If source is an object instance then it may already be the right type
2492     if (wxPySwigInstance_Check(source)) {
2493         wxColour* ptr;
2494         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2495             goto error;
2496         *obj = ptr;
2497         return True;
2498     }
2499     // otherwise check for a string
2500     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2501         wxString spec = Py2wxString(source);
2502         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2503             long red, green, blue;
2504             red = green = blue = 0;
2505             spec.Mid(1,2).ToLong(&red,   16);
2506             spec.Mid(3,2).ToLong(&green, 16);
2507             spec.Mid(5,2).ToLong(&blue,  16);
2508
2509             **obj = wxColour(red, green, blue);
2510             return True;
2511         }
2512         else {                                       // it's a colour name
2513             **obj = wxColour(spec);
2514             return True;
2515         }
2516     }
2517     // last chance: 3-tuple of integers is expected
2518     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2519         PyObject* o1 = PySequence_GetItem(source, 0);
2520         PyObject* o2 = PySequence_GetItem(source, 1);
2521         PyObject* o3 = PySequence_GetItem(source, 2);
2522         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2523             Py_DECREF(o1);
2524             Py_DECREF(o2);
2525             Py_DECREF(o3);
2526             goto error;
2527         }
2528         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2529         Py_DECREF(o1);
2530         Py_DECREF(o2);
2531         Py_DECREF(o3);
2532         return True;
2533     }
2534
2535  error:
2536     PyErr_SetString(PyExc_TypeError,
2537                     "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
2538     return False;
2539 }
2540
2541
2542 bool wxColour_typecheck(PyObject* source) {
2543
2544     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2545         return True;
2546
2547     if (PyString_Check(source) || PyUnicode_Check(source))
2548         return True;
2549
2550     return False;
2551 }
2552
2553
2554
2555 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2556
2557     if (source == Py_None) {
2558         **obj = wxPoint2D(-1,-1);
2559         return True;
2560     }
2561
2562     // If source is an object instance then it may already be the right type
2563     if (wxPySwigInstance_Check(source)) {
2564         wxPoint2D* ptr;
2565         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2566             goto error;
2567         *obj = ptr;
2568         return True;
2569     }
2570     // otherwise a length-2 sequence of floats is expected
2571     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2572         PyObject* o1 = PySequence_GetItem(source, 0);
2573         PyObject* o2 = PySequence_GetItem(source, 1);
2574         // This should really check for floats, not numbers -- but that would break code.
2575         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2576             Py_DECREF(o1);
2577             Py_DECREF(o2);
2578             goto error;
2579         }
2580         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2581         Py_DECREF(o1);
2582         Py_DECREF(o2);
2583         return True;
2584     }
2585  error:
2586     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2D object.");
2587     return False;
2588 }
2589
2590
2591 //----------------------------------------------------------------------
2592
2593 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
2594
2595     PyObject* list = PyList_New(0);
2596     for (size_t i=0; i < arr.GetCount(); i++) {
2597 #if wxUSE_UNICODE
2598         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2599 #else
2600         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2601 #endif
2602         PyList_Append(list, str);
2603         Py_DECREF(str);
2604     }
2605     return list;
2606 }
2607
2608
2609 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2610
2611     PyObject* list = PyList_New(0);
2612     for (size_t i=0; i < arr.GetCount(); i++) {
2613         PyObject* number = PyInt_FromLong(arr[i]);
2614         PyList_Append(list, number);
2615         Py_DECREF(number);
2616     }
2617     return list;
2618 }
2619
2620
2621 //----------------------------------------------------------------------
2622 //----------------------------------------------------------------------
2623
2624
2625
2626