wxPython/src/helpers.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpers.cpp
   3 // Purpose:     Helper functions/classes for the wxPython extension module
   4 //
   5 // Author:      Robin Dunn
   6 //
   7 // Created:     1-July-1997
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13
  14 #undef DEBUG
  15 #include <Python.h>
  16 #include "wx/wxPython/wxPython_int.h"
  17 #include "wx/wxPython/pyistream.h"
  18
  19 #ifdef __WXMSW__
  20 #include <wx/msw/private.h>
  21 #include <wx/msw/winundef.h>
  22 #include <wx/msw/msvcrt.h>
  23 #endif
  24
  25 #ifdef __WXGTK__
  26 #include <gtk/gtk.h>
  27 #include <gdk/gdkprivate.h>
  28 #include <wx/gtk/win_gtk.h>
  29 #endif
  30
  31 #include <wx/clipbrd.h>
  32 #include <wx/mimetype.h>
  33 #include <wx/image.h>
  34
  35 //----------------------------------------------------------------------
  36
  37 #if PYTHON_API_VERSION <= 1007 && wxUSE_UNICODE
  38 #error Python must support Unicode to use wxWindows Unicode
  39 #endif
  40
  41 //----------------------------------------------------------------------
  42
  43 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  44 bool wxPyDoCleanup = False;
  45 bool wxPyDoingCleanup = False;
  46
  47
  48 #ifdef WXP_WITH_THREAD
  49 struct wxPyThreadState {
  50     unsigned long  tid;
  51     PyThreadState* tstate;
  52
  53     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  54         : tid(_tid), tstate(_tstate) {}
  55 };
  56
  57 #include <wx/dynarray.h>
  58 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  59 #include <wx/arrimpl.cpp>
  60 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  61
  62 wxPyThreadStateArray* wxPyTStates = NULL;
  63 wxMutex*              wxPyTMutex = NULL;
  64 #endif
  65
  66
  67 static PyObject* wxPython_dict = NULL;
  68 static PyObject* wxPyAssertionError = NULL;
  69
  70 PyObject* wxPyPtrTypeMap = NULL;
  71
  72
  73 #ifdef __WXMSW__             // If building for win32...
  74 //----------------------------------------------------------------------
  75 // This gets run when the DLL is loaded.  We just need to save a handle.
  76 //----------------------------------------------------------------------
  77
  78 BOOL WINAPI DllMain(
  79     HINSTANCE   hinstDLL,    // handle to DLL module
  80     DWORD       fdwReason,   // reason for calling function
  81     LPVOID      lpvReserved  // reserved
  82    )
  83 {
  84     // If wxPython is embedded in another wxWindows app then
  85     // the inatance has already been set.
  86     if (! wxGetInstance())
  87         wxSetInstance(hinstDLL);
  88     return True;
  89 }
  90 #endif
  91
  92 //----------------------------------------------------------------------
  93 // Classes for implementing the wxp main application shell.
  94 //----------------------------------------------------------------------
  95
  96 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
  97
  98
  99 wxPyApp::wxPyApp() {
 100     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 101     m_startupComplete = False;
 102 }
 103
 104
 105 wxPyApp::~wxPyApp() {
 106 }
 107
 108
 109 // This one isn't acutally called...  We fake it with _BootstrapApp
 110 bool wxPyApp::OnInit() {
 111     return False;
 112 }
 113
 114
 115 int  wxPyApp::MainLoop() {
 116     int retval = 0;
 117
 118     DeletePendingObjects();
 119     bool initialized = wxTopLevelWindows.GetCount() != 0;
 120     if (initialized) {
 121         if ( m_exitOnFrameDelete == Later ) {
 122             m_exitOnFrameDelete = Yes;
 123         }
 124
 125         retval = wxApp::MainLoop();
 126         OnExit();
 127     }
 128     return retval;
 129 }
 130
 131
 132 bool wxPyApp::OnInitGui() {
 133     bool rval=True;
 134     wxApp::OnInitGui();  // in this case always call the base class version
 135     wxPyBeginBlockThreads();
 136     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 137         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 138     wxPyEndBlockThreads();
 139     return rval;
 140 }
 141
 142
 143 int wxPyApp::OnExit() {
 144     int rval=0;
 145     wxPyBeginBlockThreads();
 146     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 147         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 148     wxPyEndBlockThreads();
 149     wxApp::OnExit();  // in this case always call the base class version
 150     return rval;
 151 }
 152
 153
 154 #ifdef __WXDEBUG__
 155 void wxPyApp::OnAssert(const wxChar *file,
 156                      int line,
 157                      const wxChar *cond,
 158                      const wxChar *msg) {
 159
 160     // if we're not fully initialized then just log the error
 161     if (! m_startupComplete) {
 162         wxString buf;
 163         buf.Alloc(4096);
 164         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 165                    file, line, cond);
 166         if (msg != NULL) {
 167             buf += wxT(": ");
 168             buf += msg;
 169         }
 170         wxLogDebug(buf);
 171         return;
 172     }
 173
 174     // If the OnAssert is overloaded in the Python class then call it...
 175     bool found;
 176     wxPyBeginBlockThreads();
 177     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 178         PyObject* fso = wx2PyString(file);
 179         PyObject* cso = wx2PyString(file);
 180         PyObject* mso;
 181         if (msg != NULL)
 182             mso = wx2PyString(file);
 183         else {
 184             mso = Py_None; Py_INCREF(Py_None);
 185         }
 186         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 187         Py_DECREF(fso);
 188         Py_DECREF(cso);
 189         Py_DECREF(mso);
 190     }
 191     wxPyEndBlockThreads();
 192
 193     // ...otherwise do our own thing with it
 194     if (! found) {
 195         // ignore it?
 196         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 197             return;
 198
 199         // turn it into a Python exception?
 200         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 201             wxString buf;
 202             buf.Alloc(4096);
 203             buf.Printf(wxT("C++ assertion \"%s\" failed in %s(%d)"), cond, file, line);
 204             if (msg != NULL) {
 205                 buf += wxT(": ");
 206                 buf += msg;
 207             }
 208
 209             // set the exception
 210             wxPyBeginBlockThreads();
 211             PyObject* s = wx2PyString(buf);
 212             PyErr_SetObject(wxPyAssertionError, s);
 213             Py_DECREF(s);
 214             wxPyEndBlockThreads();
 215
 216             // Now when control returns to whatever API wrapper was called from
 217             // Python it should detect that an exception is set and will return
 218             // NULL, signalling the exception to Python.
 219         }
 220
 221         // Send it to the normal log destination, but only if
 222         // not _DIALOG because it will call this too
 223         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 224             wxString buf;
 225             buf.Alloc(4096);
 226             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 227                        file, line, cond);
 228             if (msg != NULL) {
 229                 buf += wxT(": ");
 230                 buf += msg;
 231             }
 232             wxLogDebug(buf);
 233         }
 234
 235         // do the normal wx assert dialog?
 236         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 237             wxApp::OnAssert(file, line, cond, msg);
 238     }
 239 }
 240 #endif
 241
 242
 243
 244 /*static*/
 245 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 246 #ifdef __WXMAC__
 247     return s_macSupportPCMenuShortcuts;
 248 #else
 249     return 0;
 250 #endif
 251 }
 252
 253 /*static*/
 254 long wxPyApp::GetMacAboutMenuItemId() {
 255 #ifdef __WXMAC__
 256     return s_macAboutMenuItemId;
 257 #else
 258     return 0;
 259 #endif
 260 }
 261
 262 /*static*/
 263 long wxPyApp::GetMacPreferencesMenuItemId() {
 264 #ifdef __WXMAC__
 265     return s_macPreferencesMenuItemId;
 266 #else
 267     return 0;
 268 #endif
 269 }
 270
 271 /*static*/
 272 long wxPyApp::GetMacExitMenuItemId() {
 273 #ifdef __WXMAC__
 274     return s_macExitMenuItemId;
 275 #else
 276     return 0;
 277 #endif
 278 }
 279
 280 /*static*/
 281 wxString wxPyApp::GetMacHelpMenuTitleName() {
 282 #ifdef __WXMAC__
 283     return s_macHelpMenuTitleName;
 284 #else
 285     return wxEmptyString;
 286 #endif
 287 }
 288
 289 /*static*/
 290 void wxPyApp::SetMacSupportPCMenuShortcuts(bool val) {
 291 #ifdef __WXMAC__
 292     s_macSupportPCMenuShortcuts = val;
 293 #endif
 294 }
 295
 296 /*static*/
 297 void wxPyApp::SetMacAboutMenuItemId(long val) {
 298 #ifdef __WXMAC__
 299     s_macAboutMenuItemId = val;
 300 #endif
 301 }
 302
 303 /*static*/
 304 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 305 #ifdef __WXMAC__
 306     s_macPreferencesMenuItemId = val;
 307 #endif
 308 }
 309
 310 /*static*/
 311 void wxPyApp::SetMacExitMenuItemId(long val) {
 312 #ifdef __WXMAC__
 313     s_macExitMenuItemId = val;
 314 #endif
 315 }
 316
 317 /*static*/
 318 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 319 #ifdef __WXMAC__
 320     s_macHelpMenuTitleName = val;
 321 #endif
 322 }
 323
 324
 325 // This finishes the initialization of wxWindows and then calls the OnInit
 326 // that should be present in the derived (Python) class.
 327 void wxPyApp::_BootstrapApp()
 328 {
 329     bool        result;
 330     PyObject*   retval = NULL;
 331     PyObject*   pyint  = NULL;
 332
 333
 334     // Get any command-line args passed to this program from the sys module
 335     int    argc = 0;
 336     char** argv = NULL;
 337     wxPyBeginBlockThreads();
 338     PyObject* sysargv = PySys_GetObject("argv");
 339     if (sysargv != NULL) {
 340         argc = PyList_Size(sysargv);
 341         argv = new char*[argc+1];
 342         int x;
 343         for(x=0; x<argc; x++) {
 344             PyObject *pyArg = PyList_GetItem(sysargv, x);
 345             argv[x] = PyString_AsString(pyArg);
 346         }
 347         argv[argc] = NULL;
 348     }
 349     wxPyEndBlockThreads();
 350
 351     result = wxEntryStart(argc, argv);
 352     delete [] argv;
 353
 354     wxPyBeginBlockThreads();
 355     if (! result)  {
 356         PyErr_SetString(PyExc_SystemError, "wxEntryStart failed!");
 357         goto error;
 358     }
 359
 360     // The stock objects were all NULL when they were loaded into
 361     // SWIG generated proxies, so re-init those now...
 362     wxPy_ReinitStockObjects(False);
 363
 364     // It's now ok to generate exceptions for assertion errors.
 365     wxPythonApp->SetStartupComplete(True);
 366
 367     // Call the Python wxApp's OnInit function
 368     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 369
 370         PyObject* method = m_myInst.GetLastFound();
 371         PyObject* argTuple = PyTuple_New(0);
 372         retval = PyEval_CallObject(method, argTuple);
 373         Py_DECREF(argTuple);
 374         Py_DECREF(method);
 375         if (retval == NULL)
 376             goto error;
 377
 378         pyint = PyNumber_Int(retval);
 379         if (! pyint) {
 380             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 381             goto error;
 382         }
 383         result = PyInt_AS_LONG(pyint);
 384     }
 385     else {
 386         // Is it okay if there is no OnInit?  Probably so...
 387         result = True;
 388     }
 389
 390
 391     if (! result) {
 392         PyErr_SetString(PyExc_SystemExit, "OnInit returned False, exiting...");
 393     }
 394
 395  error:
 396     Py_XDECREF(retval);
 397     Py_XDECREF(pyint);
 398
 399     wxPyEndBlockThreads();
 400 };
 401
 402 //---------------------------------------------------------------------
 403 //----------------------------------------------------------------------
 404
 405
 406 #if 0
 407 static char* wxPyCopyCString(const wxChar* src)
 408 {
 409     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 410     size_t len = strlen(buff);
 411     char*  dest = new char[len+1];
 412     strcpy(dest, buff);
 413     return dest;
 414 }
 415
 416 #if wxUSE_UNICODE
 417 static char* wxPyCopyCString(const char* src)   // we need a char version too
 418 {
 419     size_t len = strlen(src);
 420     char*  dest = new char[len+1];
 421     strcpy(dest, src);
 422     return dest;
 423 }
 424 #endif
 425
 426 static wxChar* wxPyCopyWString(const char *src)
 427 {
 428     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 429     wxString str(src, *wxConvCurrent);
 430     return copystring(str);
 431 }
 432
 433 #if wxUSE_UNICODE
 434 static wxChar* wxPyCopyWString(const wxChar *src)
 435 {
 436     return copystring(src);
 437 }
 438 #endif
 439 #endif
 440
 441
 442 inline const char* dropwx(const char* name) {
 443     if (name[0] == 'w' && name[1] == 'x')
 444         return name+2;
 445     else
 446         return name;
 447 }
 448
 449 //----------------------------------------------------------------------
 450
 451 // This function is called when the wxc module is imported to do some initial
 452 // setup.  (Before there is a wxApp object.)  The rest happens in
 453 // wxPyApp::_BootstrapApp
 454 void __wxPyPreStart(PyObject* moduleDict)
 455 {
 456
 457 #ifdef __WXMSW__
 458 //    wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 459 #endif
 460
 461 #ifdef WXP_WITH_THREAD
 462     PyEval_InitThreads();
 463     wxPyTStates = new wxPyThreadStateArray;
 464     wxPyTMutex = new wxMutex;
 465
 466     // Save the current (main) thread state in our array
 467     PyThreadState* tstate = wxPyBeginAllowThreads();
 468     wxPyEndAllowThreads(tstate);
 469 #endif
 470
 471     // Ensure that the build options in the DLL (or whatever) match this build
 472     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 473
 474     // Init the stock objects to a non-NULL value so SWIG doesn't create them as None
 475     wxPy_ReinitStockObjects(True);
 476 }
 477
 478
 479
 480 void __wxPyCleanup() {
 481     wxPyDoingCleanup = True;
 482     if (wxPyDoCleanup) {
 483         wxPyDoCleanup = False;
 484         wxEntryCleanup();
 485     }
 486 #ifdef WXP_WITH_THREAD
 487     delete wxPyTMutex;
 488     wxPyTMutex = NULL;
 489     wxPyTStates->Empty();
 490     delete wxPyTStates;
 491     wxPyTStates = NULL;
 492 #endif
 493 }
 494
 495
 496 // Save a reference to the dictionary of the wx.core module, and inject
 497 // a few more things into it.
 498 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 499 {
 500
 501     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 502         return NULL;
 503
 504     if (!PyDict_Check(wxPython_dict)) {
 505         PyErr_SetString(PyExc_TypeError, "_wxPySetDictionary must have dictionary object!");
 506         return NULL;
 507     }
 508
 509     if (! wxPyPtrTypeMap)
 510         wxPyPtrTypeMap = PyDict_New();
 511     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 512
 513     // Create an exception object to use for wxASSERTions
 514     wxPyAssertionError = PyErr_NewException("wx.core.PyAssertionError",
 515                                             PyExc_AssertionError, NULL);
 516     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 517
 518
 519 #ifdef __WXMOTIF__
 520 #define wxPlatform "__WXMOTIF__"
 521 #endif
 522 #ifdef __WXX11__
 523 #define wxPlatform "__WXX11__"
 524 #endif
 525 #ifdef __WXGTK__
 526 #define wxPlatform "__WXGTK__"
 527 #endif
 528 #if defined(__WIN32__) || defined(__WXMSW__)
 529 #define wxPlatform "__WXMSW__"
 530 #endif
 531 #ifdef __WXMAC__
 532 #define wxPlatform "__WXMAC__"
 533 #endif
 534
 535 #ifdef __WXDEBUG__
 536     int wxdebug = 1;
 537 #else
 538     int wxdebug = 0;
 539 #endif
 540
 541     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 542     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 543     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 544
 545     RETURN_NONE();
 546 }
 547
 548
 549 //---------------------------------------------------------------------------
 550
 551 // Python's PyInstance_Check does not return True for instances of new-style
 552 // classes.  This should get close enough for both new and old classes but I
 553 // should re-evaluate the need for doing instance checks...
 554 bool wxPyInstance_Check(PyObject* obj) {
 555     return PyObject_HasAttrString(obj, "__class__") != 0;
 556 }
 557
 558
 559 // This one checks if the object is an instance of a SWIG proxy class (it has
 560 // a .this attribute)
 561 bool wxPySwigInstance_Check(PyObject* obj) {
 562     return PyObject_HasAttrString(obj, "this") != 0;
 563 }
 564
 565 //---------------------------------------------------------------------------
 566
 567 // The stock objects are no longer created when the wxc module is imported, but
 568 // only after the app object has been created.  This function will be called before
 569 // OnInit is called so we can hack the new pointer values into the obj.this attributes.
 570
 571 void wxPy_ReinitStockObjects(bool init)
 572 {
 573     PyObject* obj;
 574     PyObject* ptrobj;
 575
 576
 577 #define REINITOBJ(name, classname) \
 578     if ( init ) { name = (classname*)0xC0C0C0C0; } else { \
 579     obj = PyDict_GetItemString(wxPython_dict, dropwx(#name)); \
 580     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object for " #name)) \
 581     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance: " #name)); \
 582     ptrobj = wxPyMakeSwigPtr((void*)name, wxT(#classname)); \
 583     PyObject_SetAttrString(obj, "this", ptrobj); \
 584     Py_DECREF(ptrobj); }
 585
 586 #define REINITOBJ2(name, classname) \
 587     if ( init ) { } else { \
 588     obj = PyDict_GetItemString(wxPython_dict, dropwx(#name)); \
 589     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object for " #name)) \
 590     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance: " #name)); \
 591     ptrobj = wxPyMakeSwigPtr((void*)&name, wxT(#classname)); \
 592     PyObject_SetAttrString(obj, "this", ptrobj); \
 593     Py_DECREF(ptrobj); }
 594
 595
 596     REINITOBJ(wxNORMAL_FONT, wxFont);
 597     REINITOBJ(wxSMALL_FONT, wxFont);
 598     REINITOBJ(wxITALIC_FONT, wxFont);
 599     REINITOBJ(wxSWISS_FONT, wxFont);
 600
 601     REINITOBJ(wxRED_PEN, wxPen);
 602     REINITOBJ(wxCYAN_PEN, wxPen);
 603     REINITOBJ(wxGREEN_PEN, wxPen);
 604     REINITOBJ(wxBLACK_PEN, wxPen);
 605     REINITOBJ(wxWHITE_PEN, wxPen);
 606     REINITOBJ(wxTRANSPARENT_PEN, wxPen);
 607     REINITOBJ(wxBLACK_DASHED_PEN, wxPen);
 608     REINITOBJ(wxGREY_PEN, wxPen);
 609     REINITOBJ(wxMEDIUM_GREY_PEN, wxPen);
 610     REINITOBJ(wxLIGHT_GREY_PEN, wxPen);
 611
 612     REINITOBJ(wxBLUE_BRUSH, wxBrush);
 613     REINITOBJ(wxGREEN_BRUSH, wxBrush);
 614     REINITOBJ(wxWHITE_BRUSH, wxBrush);
 615     REINITOBJ(wxBLACK_BRUSH, wxBrush);
 616     REINITOBJ(wxTRANSPARENT_BRUSH, wxBrush);
 617     REINITOBJ(wxCYAN_BRUSH, wxBrush);
 618     REINITOBJ(wxRED_BRUSH, wxBrush);
 619     REINITOBJ(wxGREY_BRUSH, wxBrush);
 620     REINITOBJ(wxMEDIUM_GREY_BRUSH, wxBrush);
 621     REINITOBJ(wxLIGHT_GREY_BRUSH, wxBrush);
 622
 623     REINITOBJ(wxBLACK, wxColour);
 624     REINITOBJ(wxWHITE, wxColour);
 625     REINITOBJ(wxRED, wxColour);
 626     REINITOBJ(wxBLUE, wxColour);
 627     REINITOBJ(wxGREEN, wxColour);
 628     REINITOBJ(wxCYAN, wxColour);
 629     REINITOBJ(wxLIGHT_GREY, wxColour);
 630
 631     REINITOBJ(wxSTANDARD_CURSOR, wxCursor);
 632     REINITOBJ(wxHOURGLASS_CURSOR, wxCursor);
 633     REINITOBJ(wxCROSS_CURSOR, wxCursor);
 634
 635     REINITOBJ2(wxNullBitmap, wxBitmap);
 636     REINITOBJ2(wxNullIcon, wxIcon);
 637     REINITOBJ2(wxNullCursor, wxCursor);
 638     REINITOBJ2(wxNullPen, wxPen);
 639     REINITOBJ2(wxNullBrush, wxBrush);
 640     REINITOBJ2(wxNullPalette, wxPalette);
 641     REINITOBJ2(wxNullFont, wxFont);
 642     REINITOBJ2(wxNullColour, wxColour);
 643
 644     REINITOBJ(wxTheFontList, wxFontList);
 645     REINITOBJ(wxThePenList, wxPenList);
 646     REINITOBJ(wxTheBrushList, wxBrushList);
 647     REINITOBJ(wxTheColourDatabase, wxColourDatabase);
 648
 649
 650     REINITOBJ(wxTheClipboard, wxClipboard);
 651     REINITOBJ2(wxDefaultValidator, wxValidator);
 652     REINITOBJ2(wxNullImage, wxImage);
 653     REINITOBJ2(wxNullAcceleratorTable, wxAcceleratorTable);
 654
 655 #undef REINITOBJ
 656 #undef REINITOBJ2
 657 }
 658
 659 //---------------------------------------------------------------------------
 660
 661 void wxPyClientData_dtor(wxPyClientData* self) {
 662     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 663                                         // may have already garbage collected the object...
 664         wxPyBeginBlockThreads();
 665         Py_DECREF(self->m_obj);
 666         self->m_obj = NULL;
 667         wxPyEndBlockThreads();
 668     }
 669 }
 670
 671 void wxPyUserData_dtor(wxPyUserData* self) {
 672     if (! wxPyDoingCleanup) {
 673         wxPyBeginBlockThreads();
 674         Py_DECREF(self->m_obj);
 675         self->m_obj = NULL;
 676         wxPyEndBlockThreads();
 677     }
 678 }
 679
 680
 681 // This is called when an OOR controled object is being destroyed.  Although
 682 // the C++ object is going away there is no way to force the Python object
 683 // (and all references to it) to die too.  This causes problems (crashes) in
 684 // wxPython when a python shadow object attempts to call a C++ method using
 685 // the now bogus pointer... So to try and prevent this we'll do a little black
 686 // magic and change the class of the python instance to a class that will
 687 // raise an exception for any attempt to call methods with it.  See
 688 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 689 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 690
 691     static PyObject* deadObjectClass = NULL;
 692
 693     wxPyBeginBlockThreads();
 694     if (deadObjectClass == NULL) {
 695         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 696         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 697         // will lead to a deadlock when it tries to aquire the GIL again.
 698         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 699         Py_INCREF(deadObjectClass);
 700     }
 701
 702
 703     // Only if there is more than one reference to the object
 704     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 ) {
 705         // bool isInstance = wxPyInstance_Check(self->m_obj);
 706         // TODO same here
 707         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 708
 709         // Call __del__, if there is one.
 710         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 711         if (func) {
 712             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 713             Py_XDECREF(rv);
 714             Py_DECREF(func);
 715         }
 716         if (PyErr_Occurred())
 717             PyErr_Clear();      // just ignore it for now
 718
 719
 720         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 721         if (dict) {
 722             // Clear the instance's dictionary
 723             PyDict_Clear(dict);
 724
 725             // put the name of the old class into the instance, and then reset the
 726             // class to be the dead class.
 727             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 728             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 729             PyDict_SetItemString(dict, "_name", name);
 730             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 731             //Py_INCREF(deadObjectClass);
 732             Py_DECREF(klass);
 733             Py_DECREF(name);
 734         }
 735     }
 736
 737     // m_obj is DECREF'd in the base class dtor...
 738     wxPyEndBlockThreads();
 739 }
 740
 741
 742 //---------------------------------------------------------------------------
 743 // Stuff used by OOR to find the right wxPython class type to return and to
 744 // build it.
 745
 746
 747 // The pointer type map is used when the "pointer" type name generated by SWIG
 748 // is not the same as the shadow class name, for example wxPyTreeCtrl
 749 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 750 // so we'll just make it a Python dictionary in the wx module's namespace.
 751 // (See __wxSetDictionary)
 752 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 753     if (! wxPyPtrTypeMap)
 754         wxPyPtrTypeMap = PyDict_New();
 755     PyDict_SetItemString(wxPyPtrTypeMap,
 756                          (char*)commonName,
 757                          PyString_FromString((char*)ptrName));
 758 }
 759
 760
 761
 762
 763 PyObject*  wxPyMake_wxObject(wxObject* source, bool checkEvtHandler) {
 764     PyObject* target = NULL;
 765     bool      isEvtHandler = False;
 766
 767     if (source) {
 768         // If it's derived from wxEvtHandler then there may
 769         // already be a pointer to a Python object that we can use
 770         // in the OOR data.
 771         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 772             isEvtHandler = True;
 773             wxEvtHandler* eh = (wxEvtHandler*)source;
 774             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 775             if (data) {
 776                 target = data->m_obj;
 777                 if (target)
 778                     Py_INCREF(target);
 779             }
 780         }
 781
 782         if (! target) {
 783             // Otherwise make it the old fashioned way by making a new shadow
 784             // object and putting this pointer in it.  Look up the class
 785             // heirarchy until we find a class name that is located in the
 786             // python module.
 787             const wxClassInfo* info   = source->GetClassInfo();
 788             wxString           name   = info->GetClassName();
 789             bool               exists = wxPyCheckSwigType(name);
 790             while (info && !exists) {
 791                 info = info->GetBaseClass1();
 792                 name = info->GetClassName();
 793                 exists = wxPyCheckSwigType(name);
 794             }
 795             if (info) {
 796                 target = wxPyConstructObject((void*)source, name, False);
 797                 if (target && isEvtHandler)
 798                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
 799             } else {
 800                 wxString msg(wxT("wxPython class not found for "));
 801                 msg += source->GetClassInfo()->GetClassName();
 802                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
 803                 target = NULL;
 804             }
 805         }
 806     } else {  // source was NULL so return None.
 807         Py_INCREF(Py_None); target = Py_None;
 808     }
 809     return target;
 810 }
 811
 812
 813 PyObject*  wxPyMake_wxSizer(wxSizer* source) {
 814     PyObject* target = NULL;
 815
 816     if (source && wxIsKindOf(source, wxSizer)) {
 817         // If it's derived from wxSizer then there may already be a pointer to
 818         // a Python object that we can use in the OOR data.
 819         wxSizer* sz = (wxSizer*)source;
 820         wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
 821         if (data) {
 822             target = data->m_obj;
 823             if (target)
 824                 Py_INCREF(target);
 825         }
 826     }
 827     if (! target) {
 828         target = wxPyMake_wxObject(source, False);
 829         if (target != Py_None)
 830             ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
 831     }
 832     return target;
 833 }
 834
 835
 836 //---------------------------------------------------------------------------
 837
 838
 839 #ifdef WXP_WITH_THREAD
 840 inline
 841 unsigned long wxPyGetCurrentThreadId() {
 842     return wxThread::GetCurrentId();
 843 }
 844
 845 static PyThreadState* gs_shutdownTState;
 846
 847 static
 848 PyThreadState* wxPyGetThreadState() {
 849     if (wxPyTMutex == NULL) // Python is shutting down...
 850         return gs_shutdownTState;
 851
 852     unsigned long ctid = wxPyGetCurrentThreadId();
 853     PyThreadState* tstate = NULL;
 854
 855     wxPyTMutex->Lock();
 856     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 857         wxPyThreadState& info = wxPyTStates->Item(i);
 858         if (info.tid == ctid) {
 859             tstate = info.tstate;
 860             break;
 861         }
 862     }
 863     wxPyTMutex->Unlock();
 864     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
 865     return tstate;
 866 }
 867
 868 static
 869 void wxPySaveThreadState(PyThreadState* tstate) {
 870     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
 871         gs_shutdownTState = tstate;
 872         return;
 873     }
 874     unsigned long ctid = wxPyGetCurrentThreadId();
 875     wxPyTMutex->Lock();
 876     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 877         wxPyThreadState& info = wxPyTStates->Item(i);
 878         if (info.tid == ctid) {
 879 #if 0
 880             if (info.tstate != tstate)
 881                 wxLogMessage("*** tstate mismatch!???");
 882 #endif
 883             // info.tstate = tstate;    *** DO NOT update existing ones???
 884             // Normally it will never change, but apparently COM callbacks
 885             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
 886             // tstate which will then be garbage the next time we try to use
 887             // it...
 888             wxPyTMutex->Unlock();
 889             return;
 890         }
 891     }
 892     // not found, so add it...
 893     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
 894     wxPyTMutex->Unlock();
 895 }
 896
 897 #endif
 898
 899
 900 // Calls from Python to wxWindows code are wrapped in calls to these
 901 // functions:
 902
 903 PyThreadState* wxPyBeginAllowThreads() {
 904 #ifdef WXP_WITH_THREAD
 905     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
 906     wxPySaveThreadState(saved);
 907     return saved;
 908 #else
 909     return NULL;
 910 #endif
 911 }
 912
 913 void wxPyEndAllowThreads(PyThreadState* saved) {
 914 #ifdef WXP_WITH_THREAD
 915     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
 916 #endif
 917 }
 918
 919
 920
 921 // Calls from wxWindows back to Python code, or even any PyObject
 922 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
 923
 924 void wxPyBeginBlockThreads() {
 925 #ifdef WXP_WITH_THREAD
 926     PyThreadState* tstate = wxPyGetThreadState();
 927     PyEval_RestoreThread(tstate);
 928 #endif
 929 }
 930
 931
 932 void wxPyEndBlockThreads() {
 933 #ifdef WXP_WITH_THREAD
 934     // Is there any need to save it again?
 935     // PyThreadState* tstate =
 936     PyEval_SaveThread();
 937 #endif
 938 }
 939
 940
 941 //---------------------------------------------------------------------------
 942 // wxPyInputStream and wxPyCBInputStream methods
 943
 944
 945 void wxPyInputStream::close() {
 946     /* do nothing for now */
 947 }
 948
 949 void wxPyInputStream::flush() {
 950     /* do nothing for now */
 951 }
 952
 953 bool wxPyInputStream::eof() {
 954     if (m_wxis)
 955         return m_wxis->Eof();
 956     else
 957         return True;
 958 }
 959
 960 wxPyInputStream::~wxPyInputStream() {
 961     /* do nothing */
 962 }
 963
 964
 965
 966
 967 PyObject* wxPyInputStream::read(int size) {
 968     PyObject* obj = NULL;
 969     wxMemoryBuffer buf;
 970     const int BUFSIZE = 1024;
 971
 972     // check if we have a real wxInputStream to work with
 973     if (!m_wxis) {
 974         wxPyBeginBlockThreads();
 975         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
 976         wxPyEndBlockThreads();
 977         return NULL;
 978     }
 979
 980     if (size < 0) {
 981         // read while bytes are available on the stream
 982         while ( m_wxis->CanRead() ) {
 983             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
 984             buf.UngetAppendBuf(m_wxis->LastRead());
 985         }
 986
 987     } else {  // Read only size number of characters
 988         m_wxis->Read(buf.GetWriteBuf(size), size);
 989         buf.UngetWriteBuf(m_wxis->LastRead());
 990     }
 991
 992     // error check
 993     wxPyBeginBlockThreads();
 994     wxStreamError err = m_wxis->GetLastError();
 995     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
 996         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
 997     }
 998     else {
 999         // We use only strings for the streams, not unicode
1000         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1001     }
1002     wxPyEndBlockThreads();
1003     return obj;
1004 }
1005
1006
1007 PyObject* wxPyInputStream::readline(int size) {
1008     PyObject* obj = NULL;
1009     wxMemoryBuffer buf;
1010     int i;
1011     char ch;
1012
1013     // check if we have a real wxInputStream to work with
1014     if (!m_wxis) {
1015         wxPyBeginBlockThreads();
1016         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1017         wxPyEndBlockThreads();
1018         return NULL;
1019     }
1020
1021     // read until \n or byte limit reached
1022     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1023         ch = m_wxis->GetC();
1024         buf.AppendByte(ch);
1025     }
1026
1027     // errorcheck
1028     wxPyBeginBlockThreads();
1029     wxStreamError err = m_wxis->GetLastError();
1030     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1031         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1032     }
1033     else {
1034         // We use only strings for the streams, not unicode
1035         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1036     }
1037     wxPyEndBlockThreads();
1038     return obj;
1039 }
1040
1041
1042 PyObject* wxPyInputStream::readlines(int sizehint) {
1043     PyObject* pylist;
1044
1045     // check if we have a real wxInputStream to work with
1046     if (!m_wxis) {
1047         wxPyBeginBlockThreads();
1048         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1049         wxPyEndBlockThreads();
1050         return NULL;
1051     }
1052
1053     // init list
1054     wxPyBeginBlockThreads();
1055     pylist = PyList_New(0);
1056     if (!pylist) {
1057         wxPyBeginBlockThreads();
1058         PyErr_NoMemory();
1059         wxPyEndBlockThreads();
1060         return NULL;
1061     }
1062
1063     // read sizehint bytes or until EOF
1064     int i;
1065     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1066         PyObject* s = this->readline();
1067         if (s == NULL) {
1068             wxPyBeginBlockThreads();
1069             Py_DECREF(pylist);
1070             wxPyEndBlockThreads();
1071             return NULL;
1072         }
1073         wxPyBeginBlockThreads();
1074         PyList_Append(pylist, s);
1075         i += PyString_Size(s);
1076         wxPyEndBlockThreads();
1077     }
1078
1079     // error check
1080     wxStreamError err = m_wxis->GetLastError();
1081     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1082         wxPyBeginBlockThreads();
1083         Py_DECREF(pylist);
1084         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1085         wxPyEndBlockThreads();
1086         return NULL;
1087     }
1088
1089     return pylist;
1090 }
1091
1092
1093 void wxPyInputStream::seek(int offset, int whence) {
1094     if (m_wxis)
1095         m_wxis->SeekI(offset, wxSeekMode(whence));
1096 }
1097
1098 int wxPyInputStream::tell(){
1099     if (m_wxis)
1100         return m_wxis->TellI();
1101     else return 0;
1102 }
1103
1104
1105
1106
1107 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1108     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1109 {}
1110
1111
1112 wxPyCBInputStream::~wxPyCBInputStream() {
1113     if (m_block) wxPyBeginBlockThreads();
1114     Py_XDECREF(m_read);
1115     Py_XDECREF(m_seek);
1116     Py_XDECREF(m_tell);
1117     if (m_block) wxPyEndBlockThreads();
1118 }
1119
1120
1121 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1122     if (block) wxPyBeginBlockThreads();
1123
1124     PyObject* read = getMethod(py, "read");
1125     PyObject* seek = getMethod(py, "seek");
1126     PyObject* tell = getMethod(py, "tell");
1127
1128     if (!read) {
1129         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1130         Py_XDECREF(read);
1131         Py_XDECREF(seek);
1132         Py_XDECREF(tell);
1133         if (block) wxPyEndBlockThreads();
1134         return NULL;
1135     }
1136
1137     if (block) wxPyEndBlockThreads();
1138     return new wxPyCBInputStream(read, seek, tell, block);
1139 }
1140
1141
1142 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1143     return wxPyCBInputStream::create(py, block);
1144 }
1145
1146 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1147     if (!PyObject_HasAttrString(py, name))
1148         return NULL;
1149     PyObject* o = PyObject_GetAttrString(py, name);
1150     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1151         Py_DECREF(o);
1152         return NULL;
1153     }
1154     return o;
1155 }
1156
1157
1158 size_t wxPyCBInputStream::GetSize() const {
1159     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1160     if (m_seek && m_tell) {
1161         off_t temp = self->OnSysTell();
1162         off_t ret = self->OnSysSeek(0, wxFromEnd);
1163         self->OnSysSeek(temp, wxFromStart);
1164         return ret;
1165     }
1166     else
1167         return 0;
1168 }
1169
1170
1171 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1172     if (bufsize == 0)
1173         return 0;
1174
1175     wxPyBeginBlockThreads();
1176     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1177     PyObject* result = PyEval_CallObject(m_read, arglist);
1178     Py_DECREF(arglist);
1179
1180     size_t o = 0;
1181     if ((result != NULL) && PyString_Check(result)) {
1182         o = PyString_Size(result);
1183         if (o == 0)
1184             m_lasterror = wxSTREAM_EOF;
1185         if (o > bufsize)
1186             o = bufsize;
1187         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1188         Py_DECREF(result);
1189
1190     }
1191     else
1192         m_lasterror = wxSTREAM_READ_ERROR;
1193     wxPyEndBlockThreads();
1194     return o;
1195 }
1196
1197 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1198     m_lasterror = wxSTREAM_WRITE_ERROR;
1199     return 0;
1200 }
1201
1202 off_t wxPyCBInputStream::OnSysSeek(off_t off, wxSeekMode mode) {
1203     wxPyBeginBlockThreads();
1204 #ifdef _LARGE_FILES
1205     // off_t is a 64-bit value...
1206     PyObject* arglist = Py_BuildValue("(Li)", off, mode);
1207 #else
1208     PyObject* arglist = Py_BuildValue("(ii)", off, mode);
1209 #endif
1210     PyObject* result = PyEval_CallObject(m_seek, arglist);
1211     Py_DECREF(arglist);
1212     Py_XDECREF(result);
1213     wxPyEndBlockThreads();
1214     return OnSysTell();
1215 }
1216
1217
1218 off_t wxPyCBInputStream::OnSysTell() const {
1219     wxPyBeginBlockThreads();
1220     PyObject* arglist = Py_BuildValue("()");
1221     PyObject* result = PyEval_CallObject(m_tell, arglist);
1222     Py_DECREF(arglist);
1223     off_t o = 0;
1224     if (result != NULL) {
1225 #ifdef _LARGE_FILES
1226         if (PyLong_Check(result))
1227             o = PyLong_AsLongLong(result);
1228         else
1229 #else
1230         o = PyInt_AsLong(result);
1231 #endif
1232         Py_DECREF(result);
1233     };
1234     wxPyEndBlockThreads();
1235     return o;
1236 }
1237
1238 //----------------------------------------------------------------------
1239
1240 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1241
1242 wxPyCallback::wxPyCallback(PyObject* func) {
1243     m_func = func;
1244     Py_INCREF(m_func);
1245 }
1246
1247 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1248     m_func = other.m_func;
1249     Py_INCREF(m_func);
1250 }
1251
1252 wxPyCallback::~wxPyCallback() {
1253     wxPyBeginBlockThreads();
1254     Py_DECREF(m_func);
1255     wxPyEndBlockThreads();
1256 }
1257
1258
1259
1260 // This function is used for all events destined for Python event handlers.
1261 void wxPyCallback::EventThunker(wxEvent& event) {
1262     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1263     PyObject*       func = cb->m_func;
1264     PyObject*       result;
1265     PyObject*       arg;
1266     PyObject*       tuple;
1267     bool            checkSkip = False;
1268
1269     wxPyBeginBlockThreads();
1270     wxString className = event.GetClassInfo()->GetClassName();
1271
1272     // If the event is one of these types then pass the original
1273     // event object instead of the one passed to us.
1274     if ( className == wxT("wxPyEvent") ) {
1275         arg =       ((wxPyEvent*)&event)->GetSelf();
1276         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1277     }
1278     else if ( className == wxT("wxPyCommandEvent") ) {
1279         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1280         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1281     }
1282     else {
1283         arg = wxPyConstructObject((void*)&event, className);
1284     }
1285
1286     // Call the event handler, passing the event object
1287     tuple = PyTuple_New(1);
1288     PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1289     result = PyEval_CallObject(func, tuple);
1290     if ( result ) {
1291         Py_DECREF(result);   // result is ignored, but we still need to decref it
1292         PyErr_Clear();       // Just in case...
1293     } else {
1294         PyErr_Print();
1295     }
1296
1297     if ( checkSkip ) {
1298         // if the event object was one of our special types and
1299         // it had been cloned, then we need to extract the Skipped
1300         // value from the original and set it in the clone.
1301         result = PyObject_CallMethod(arg, "GetSkipped", "");
1302         if ( result ) {
1303             event.Skip(PyInt_AsLong(result));
1304             Py_DECREF(result);
1305         } else {
1306             PyErr_Print();
1307         }
1308     }
1309
1310     Py_DECREF(tuple);
1311     wxPyEndBlockThreads();
1312 }
1313
1314
1315 //----------------------------------------------------------------------
1316
1317 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1318       m_lastFound = NULL;
1319       m_self = other.m_self;
1320       m_class = other.m_class;
1321       if (m_self) {
1322           Py_INCREF(m_self);
1323           Py_INCREF(m_class);
1324       }
1325 }
1326
1327
1328 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1329     m_self = self;
1330     m_class = klass;
1331     m_incRef = incref;
1332     if (incref) {
1333         Py_INCREF(m_self);
1334         Py_INCREF(m_class);
1335     }
1336 }
1337
1338
1339 #if PYTHON_API_VERSION >= 1011
1340
1341 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1342 // in which the method was defined.  Starting with 2.2 it returns
1343 // "class that asked for the method" which seems totally bogus to me
1344 // but apprently it fixes some obscure problem waiting to happen in
1345 // Python.  Since the API was not documented Guido and the gang felt
1346 // safe in changing it.  Needless to say that totally screwed up the
1347 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1348 // code to find the class where the method is actually defined...
1349
1350 static
1351 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1352 {
1353     int i, n;
1354
1355     if (PyType_Check(klass)) {      // new style classes
1356         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1357         PyTypeObject* type = (PyTypeObject*)klass;
1358         PyObject *mro, *res, *base, *dict;
1359         /* Look in tp_dict of types in MRO */
1360         mro = type->tp_mro;
1361         assert(PyTuple_Check(mro));
1362         n = PyTuple_GET_SIZE(mro);
1363         for (i = 0; i < n; i++) {
1364             base = PyTuple_GET_ITEM(mro, i);
1365             if (PyClass_Check(base))
1366                 dict = ((PyClassObject *)base)->cl_dict;
1367             else {
1368                 assert(PyType_Check(base));
1369                 dict = ((PyTypeObject *)base)->tp_dict;
1370             }
1371             assert(dict && PyDict_Check(dict));
1372             res = PyDict_GetItem(dict, name);
1373             if (res != NULL)
1374                 return base;
1375         }
1376         return NULL;
1377     }
1378
1379     else if (PyClass_Check(klass)) { // old style classes
1380         // This code is borrowed/adapted from class_lookup in classobject.c
1381         PyClassObject* cp = (PyClassObject*)klass;
1382         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1383         if (value != NULL) {
1384             return (PyObject*)cp;
1385         }
1386         n = PyTuple_Size(cp->cl_bases);
1387         for (i = 0; i < n; i++) {
1388             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1389             PyObject *v = PyFindClassWithAttr(base, name);
1390             if (v != NULL)
1391                 return v;
1392         }
1393         return NULL;
1394     }
1395     return NULL;
1396 }
1397 #endif
1398
1399
1400 static
1401 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
1402 {
1403     PyObject* mgc = PyMethod_GET_CLASS(method);
1404
1405 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1406     return mgc;
1407 #else                             // 2.2 and after, the hard way...
1408
1409     PyObject* nameo = PyString_FromString(name);
1410     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
1411     Py_DECREF(nameo);
1412     return klass;
1413 #endif
1414 }
1415
1416
1417
1418 bool wxPyCallbackHelper::findCallback(const char* name) const {
1419     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1420     self->m_lastFound = NULL;
1421
1422     // If the object (m_self) has an attibute of the given name...
1423     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
1424         PyObject *method, *klass;
1425         method = PyObject_GetAttrString(m_self, (char*)name);
1426
1427         // ...and if that attribute is a method, and if that method's class is
1428         // not from a base class...
1429         if (PyMethod_Check(method) &&
1430             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
1431             ((klass == m_class) || PyObject_IsSubclass(klass, m_class))) {
1432
1433             // ...then we'll save a pointer to the method so callCallback can call it.
1434             self->m_lastFound = method;
1435         }
1436         else {
1437             Py_DECREF(method);
1438         }
1439     }
1440     return m_lastFound != NULL;
1441 }
1442
1443
1444 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1445     PyObject*   result;
1446     int         retval = False;
1447
1448     result = callCallbackObj(argTuple);
1449     if (result) {                       // Assumes an integer return type...
1450         retval = PyInt_AsLong(result);
1451         Py_DECREF(result);
1452         PyErr_Clear();                  // forget about it if it's not...
1453     }
1454     return retval;
1455 }
1456
1457 // Invoke the Python callable object, returning the raw PyObject return
1458 // value.  Caller should DECREF the return value and also manage the GIL.
1459 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1460     PyObject* result;
1461
1462     // Save a copy of the pointer in case the callback generates another
1463     // callback.  In that case m_lastFound will have a different value when
1464     // it gets back here...
1465     PyObject* method = m_lastFound;
1466
1467     result = PyEval_CallObject(method, argTuple);
1468     Py_DECREF(argTuple);
1469     Py_DECREF(method);
1470     if (!result) {
1471         PyErr_Print();
1472     }
1473     return result;
1474 }
1475
1476
1477 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1478     cbh.setSelf(self, klass, incref);
1479 }
1480
1481 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
1482     return cbh.findCallback(name);
1483 }
1484
1485 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1486     return cbh.callCallback(argTuple);
1487 }
1488
1489 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1490     return cbh.callCallbackObj(argTuple);
1491 }
1492
1493
1494 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1495     if (cbh->m_incRef) {
1496         wxPyBeginBlockThreads();
1497         Py_XDECREF(cbh->m_self);
1498         Py_XDECREF(cbh->m_class);
1499         wxPyEndBlockThreads();
1500     }
1501 }
1502
1503 //---------------------------------------------------------------------------
1504 //---------------------------------------------------------------------------
1505 // These event classes can be derived from in Python and passed through the event
1506 // system without losing anything.  They do this by keeping a reference to
1507 // themselves and some special case handling in wxPyCallback::EventThunker.
1508
1509
1510 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1511     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1512     //Py_INCREF(m_self);        //      circular loops...
1513     m_cloned = False;
1514 }
1515
1516 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1517     wxPyBeginBlockThreads();
1518     if (m_cloned)
1519         Py_DECREF(m_self);
1520     wxPyEndBlockThreads();
1521 }
1522
1523 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1524     wxPyBeginBlockThreads();
1525     if (m_cloned)
1526         Py_DECREF(m_self);
1527     m_self = self;
1528     if (clone) {
1529         Py_INCREF(m_self);
1530         m_cloned = True;
1531     }
1532     wxPyEndBlockThreads();
1533 }
1534
1535 PyObject* wxPyEvtSelfRef::GetSelf() const {
1536     Py_INCREF(m_self);
1537     return m_self;
1538 }
1539
1540
1541 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1542 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1543
1544
1545 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1546     : wxEvent(winid, commandType) {
1547 }
1548
1549
1550 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1551     : wxEvent(evt)
1552 {
1553     SetSelf(evt.m_self, True);
1554 }
1555
1556
1557 wxPyEvent::~wxPyEvent() {
1558 }
1559
1560
1561 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1562     : wxCommandEvent(commandType, id) {
1563 }
1564
1565
1566 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1567     : wxCommandEvent(evt)
1568 {
1569     SetSelf(evt.m_self, True);
1570 }
1571
1572
1573 wxPyCommandEvent::~wxPyCommandEvent() {
1574 }
1575
1576
1577
1578
1579
1580 //---------------------------------------------------------------------------
1581 //---------------------------------------------------------------------------
1582 // Convert a wxList to a Python List, only works for lists of wxObjects
1583
1584 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1585     wxList*     list = (wxList*)listbase;  // this is probably bad...
1586     PyObject*   pyList;
1587     PyObject*   pyObj;
1588     wxObject*   wxObj;
1589     wxNode*     node = list->GetFirst();
1590
1591     wxPyBeginBlockThreads();
1592     pyList = PyList_New(0);
1593     while (node) {
1594         wxObj = node->GetData();
1595         pyObj = wxPyMake_wxObject(wxObj);
1596         PyList_Append(pyList, pyObj);
1597         node = node->GetNext();
1598     }
1599     wxPyEndBlockThreads();
1600     return pyList;
1601 }
1602
1603 //----------------------------------------------------------------------
1604
1605 long wxPyGetWinHandle(wxWindow* win) {
1606 #ifdef __WXMSW__
1607     return (long)win->GetHandle();
1608 #endif
1609
1610     // Find and return the actual X-Window.
1611 #ifdef __WXGTK__
1612     if (win->m_wxwindow) {
1613 #ifdef __WXGTK20__
1614         return (long) GDK_WINDOW_XWINDOW(GTK_PIZZA(win->m_wxwindow)->bin_window);
1615 #else
1616         GdkWindowPrivate* bwin = (GdkWindowPrivate*)GTK_PIZZA(win->m_wxwindow)->bin_window;
1617         if (bwin) {
1618             return (long)bwin->xwindow;
1619         }
1620 #endif
1621     }
1622 #endif
1623     return 0;
1624 }
1625
1626 //----------------------------------------------------------------------
1627 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1628 // included in every file over and over again...
1629
1630 #if PYTHON_API_VERSION >= 1009
1631     static char* wxStringErrorMsg = "String or Unicode type required";
1632 #else
1633     static char* wxStringErrorMsg = "String type required";
1634 #endif
1635
1636
1637 wxString* wxString_in_helper(PyObject* source) {
1638     wxString* target;
1639 #if PYTHON_API_VERSION >= 1009  // Have Python unicode API
1640     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1641         PyErr_SetString(PyExc_TypeError, wxStringErrorMsg);
1642         return NULL;
1643     }
1644 #if wxUSE_UNICODE
1645     if (PyUnicode_Check(source)) {
1646         target = new wxString();
1647         size_t len = PyUnicode_GET_SIZE(source);
1648         if (len) {
1649             PyUnicode_AsWideChar((PyUnicodeObject*)source, target->GetWriteBuf(len), len);
1650             target->UngetWriteBuf();
1651         }
1652     } else {
1653         // It is a string, get pointers to it and transform to unicode
1654         char* tmpPtr; int tmpSize;
1655         PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1656         target = new wxString(tmpPtr, *wxConvCurrent, tmpSize);
1657     }
1658 #else
1659     char* tmpPtr; int tmpSize;
1660     if (PyString_AsStringAndSize(source, &tmpPtr, &tmpSize) == -1) {
1661         PyErr_SetString(PyExc_TypeError, "Unable to convert string");
1662         return NULL;
1663     }
1664     target = new wxString(tmpPtr, tmpSize);
1665 #endif // wxUSE_UNICODE
1666
1667 #else  // No Python unicode API (1.5.2)
1668     if (!PyString_Check(source)) {
1669         PyErr_SetString(PyExc_TypeError, wxStringErrorMsg);
1670         return NULL;
1671     }
1672     target = new wxString(PyString_AS_STRING(source), PyString_GET_SIZE(source));
1673 #endif
1674     return target;
1675 }
1676
1677
1678 // Similar to above except doesn't use "new" and doesn't set an exception
1679 wxString Py2wxString(PyObject* source)
1680 {
1681     wxString target;
1682     bool     doDecRef = False;
1683
1684 #if PYTHON_API_VERSION >= 1009  // Have Python unicode API
1685     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1686         // Convert to String if not one already...  (TODO: Unicode too?)
1687         source = PyObject_Str(source);
1688         doDecRef = True;
1689     }
1690
1691 #if wxUSE_UNICODE
1692     if (PyUnicode_Check(source)) {
1693         size_t len = PyUnicode_GET_SIZE(source);
1694         if (len) {
1695             PyUnicode_AsWideChar((PyUnicodeObject*)source, target.GetWriteBuf(len), len);
1696             target.UngetWriteBuf();
1697         }
1698     } else {
1699         // It is a string, get pointers to it and transform to unicode
1700         char* tmpPtr; int tmpSize;
1701         PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1702         target = wxString(tmpPtr, *wxConvCurrent, tmpSize);
1703     }
1704 #else
1705     char* tmpPtr; int tmpSize;
1706     PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1707     target = wxString(tmpPtr, tmpSize);
1708 #endif // wxUSE_UNICODE
1709
1710 #else  // No Python unicode API (1.5.2)
1711     if (!PyString_Check(source)) {
1712         // Convert to String if not one already...
1713         source = PyObject_Str(source);
1714         doDecRef = True;
1715     }
1716     target = wxString(PyString_AS_STRING(source), PyString_GET_SIZE(source));
1717 #endif
1718
1719     if (doDecRef)
1720         Py_DECREF(source);
1721     return target;
1722 }
1723
1724
1725 // Make either a Python String or Unicode object, depending on build mode
1726 PyObject* wx2PyString(const wxString& src)
1727 {
1728     PyObject* str;
1729 #if wxUSE_UNICODE
1730     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
1731 #else
1732     str = PyString_FromStringAndSize(src.c_str(), src.Len());
1733 #endif
1734     return str;
1735 }
1736
1737
1738 //----------------------------------------------------------------------
1739
1740
1741 byte* byte_LIST_helper(PyObject* source) {
1742     if (!PyList_Check(source)) {
1743         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1744         return NULL;
1745     }
1746     int count = PyList_Size(source);
1747     byte* temp = new byte[count];
1748     if (! temp) {
1749         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1750         return NULL;
1751     }
1752     for (int x=0; x<count; x++) {
1753         PyObject* o = PyList_GetItem(source, x);
1754         if (! PyInt_Check(o)) {
1755             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1756             return NULL;
1757         }
1758         temp[x] = (byte)PyInt_AsLong(o);
1759     }
1760     return temp;
1761 }
1762
1763
1764 int* int_LIST_helper(PyObject* source) {
1765     if (!PyList_Check(source)) {
1766         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1767         return NULL;
1768     }
1769     int count = PyList_Size(source);
1770     int* temp = new int[count];
1771     if (! temp) {
1772         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1773         return NULL;
1774     }
1775     for (int x=0; x<count; x++) {
1776         PyObject* o = PyList_GetItem(source, x);
1777         if (! PyInt_Check(o)) {
1778             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1779             return NULL;
1780         }
1781         temp[x] = PyInt_AsLong(o);
1782     }
1783     return temp;
1784 }
1785
1786
1787 long* long_LIST_helper(PyObject* source) {
1788     if (!PyList_Check(source)) {
1789         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1790         return NULL;
1791     }
1792     int count = PyList_Size(source);
1793     long* temp = new long[count];
1794     if (! temp) {
1795         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1796         return NULL;
1797     }
1798     for (int x=0; x<count; x++) {
1799         PyObject* o = PyList_GetItem(source, x);
1800         if (! PyInt_Check(o)) {
1801             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1802             return NULL;
1803         }
1804         temp[x] = PyInt_AsLong(o);
1805     }
1806     return temp;
1807 }
1808
1809
1810 char** string_LIST_helper(PyObject* source) {
1811     if (!PyList_Check(source)) {
1812         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1813         return NULL;
1814     }
1815     int count = PyList_Size(source);
1816     char** temp = new char*[count];
1817     if (! temp) {
1818         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1819         return NULL;
1820     }
1821     for (int x=0; x<count; x++) {
1822         PyObject* o = PyList_GetItem(source, x);
1823         if (! PyString_Check(o)) {
1824             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
1825             return NULL;
1826         }
1827         temp[x] = PyString_AsString(o);
1828     }
1829     return temp;
1830 }
1831
1832 //--------------------------------
1833 // Part of patch from Tim Hochberg
1834 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
1835     if (PyInt_Check(o1) && PyInt_Check(o2)) {
1836         point->x = PyInt_AS_LONG(o1);
1837         point->y = PyInt_AS_LONG(o2);
1838         return True;
1839     }
1840     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
1841         point->x = (int)PyFloat_AS_DOUBLE(o1);
1842         point->y = (int)PyFloat_AS_DOUBLE(o2);
1843         return True;
1844     }
1845     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {  // TODO: Why???
1846         // Disallow instances because they can cause havok
1847         return False;
1848     }
1849     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
1850         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
1851         point->x = PyInt_AsLong(o1);
1852         point->y = PyInt_AsLong(o2);
1853         return True;
1854     }
1855     return False;
1856 }
1857
1858
1859 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
1860     // Putting all of the declarations here allows
1861     // us to put the error handling all in one place.
1862     int x;
1863     wxPoint* temp;
1864     PyObject *o, *o1, *o2;
1865     bool isFast = PyList_Check(source) || PyTuple_Check(source);
1866
1867     if (!PySequence_Check(source)) {
1868         goto error0;
1869     }
1870
1871     // The length of the sequence is returned in count.
1872     *count = PySequence_Length(source);
1873     if (*count < 0) {
1874         goto error0;
1875     }
1876
1877     temp = new wxPoint[*count];
1878     if (!temp) {
1879         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1880         return NULL;
1881     }
1882     for (x=0; x<*count; x++) {
1883         // Get an item: try fast way first.
1884         if (isFast) {
1885             o = PySequence_Fast_GET_ITEM(source, x);
1886         }
1887         else {
1888             o = PySequence_GetItem(source, x);
1889             if (o == NULL) {
1890                 goto error1;
1891             }
1892         }
1893
1894         // Convert o to wxPoint.
1895         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
1896             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
1897             o1 = PySequence_Fast_GET_ITEM(o, 0);
1898             o2 = PySequence_Fast_GET_ITEM(o, 1);
1899             if (!wxPointFromObjects(o1, o2, &temp[x])) {
1900                 goto error2;
1901             }
1902         }
1903         else if (wxPySwigInstance_Check(o)) {
1904             wxPoint* pt;
1905             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
1906                 goto error2;
1907             }
1908             temp[x] = *pt;
1909         }
1910         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
1911             o1 = PySequence_GetItem(o, 0);
1912             o2 = PySequence_GetItem(o, 1);
1913             if (!wxPointFromObjects(o1, o2, &temp[x])) {
1914                 goto error3;
1915             }
1916             Py_DECREF(o1);
1917             Py_DECREF(o2);
1918         }
1919         else {
1920             goto error2;
1921         }
1922         // Clean up.
1923         if (!isFast)
1924             Py_DECREF(o);
1925     }
1926     return temp;
1927
1928 error3:
1929     Py_DECREF(o1);
1930     Py_DECREF(o2);
1931 error2:
1932     if (!isFast)
1933         Py_DECREF(o);
1934 error1:
1935     delete [] temp;
1936 error0:
1937     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
1938     return NULL;
1939 }
1940 // end of patch
1941 //------------------------------
1942
1943
1944 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
1945     if (!PyList_Check(source)) {
1946         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1947         return NULL;
1948     }
1949     int count = PyList_Size(source);
1950     wxBitmap** temp = new wxBitmap*[count];
1951     if (! temp) {
1952         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1953         return NULL;
1954     }
1955     for (int x=0; x<count; x++) {
1956         PyObject* o = PyList_GetItem(source, x);
1957         if (wxPySwigInstance_Check(o)) {
1958             wxBitmap*    pt;
1959             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
1960                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
1961                 return NULL;
1962             }
1963             temp[x] = pt;
1964         }
1965         else {
1966             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
1967             return NULL;
1968         }
1969     }
1970     return temp;
1971 }
1972
1973
1974
1975 wxString* wxString_LIST_helper(PyObject* source) {
1976     if (!PyList_Check(source)) {
1977         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1978         return NULL;
1979     }
1980     int count = PyList_Size(source);
1981     wxString* temp = new wxString[count];
1982     if (! temp) {
1983         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1984         return NULL;
1985     }
1986     for (int x=0; x<count; x++) {
1987         PyObject* o = PyList_GetItem(source, x);
1988 #if PYTHON_API_VERSION >= 1009
1989         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
1990             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
1991             return NULL;
1992         }
1993 #else
1994         if (! PyString_Check(o)) {
1995             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
1996             return NULL;
1997         }
1998 #endif
1999
2000         wxString* pStr = wxString_in_helper(o);
2001         temp[x] = *pStr;
2002         delete pStr;
2003     }
2004     return temp;
2005 }
2006
2007
2008 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2009     if (!PyList_Check(source)) {
2010         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2011         return NULL;
2012     }
2013     int count                = PyList_Size(source);
2014     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2015     if (! temp) {
2016         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2017         return NULL;
2018     }
2019     for (int x=0; x<count; x++) {
2020         PyObject* o = PyList_GetItem(source, x);
2021         if (wxPySwigInstance_Check(o)) {
2022             wxAcceleratorEntry* ae;
2023             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2024                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2025                 return NULL;
2026             }
2027             temp[x] = *ae;
2028         }
2029         else if (PyTuple_Check(o)) {
2030             PyObject* o1 = PyTuple_GetItem(o, 0);
2031             PyObject* o2 = PyTuple_GetItem(o, 1);
2032             PyObject* o3 = PyTuple_GetItem(o, 2);
2033             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2034         }
2035         else {
2036             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2037             return NULL;
2038         }
2039     }
2040     return temp;
2041 }
2042
2043
2044 wxPen** wxPen_LIST_helper(PyObject* source) {
2045     if (!PyList_Check(source)) {
2046         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2047         return NULL;
2048     }
2049     int count = PyList_Size(source);
2050     wxPen** temp = new wxPen*[count];
2051     if (!temp) {
2052         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2053         return NULL;
2054     }
2055     for (int x=0; x<count; x++) {
2056         PyObject* o = PyList_GetItem(source, x);
2057         if (wxPySwigInstance_Check(o)) {
2058             wxPen*  pt;
2059             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2060                 delete temp;
2061                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2062                 return NULL;
2063             }
2064             temp[x] = pt;
2065         }
2066         else {
2067             delete temp;
2068             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2069             return NULL;
2070         }
2071     }
2072     return temp;
2073 }
2074
2075
2076 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2077     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2078     PyObject *o1, *o2;
2079
2080     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2081         return False;
2082
2083     if (isFast) {
2084         o1 = PySequence_Fast_GET_ITEM(source, 0);
2085         o2 = PySequence_Fast_GET_ITEM(source, 1);
2086     }
2087     else {
2088         o1 = PySequence_GetItem(source, 0);
2089         o2 = PySequence_GetItem(source, 1);
2090     }
2091
2092     *i1 = PyInt_AsLong(o1);
2093     *i2 = PyInt_AsLong(o2);
2094
2095     if (! isFast) {
2096         Py_DECREF(o1);
2097         Py_DECREF(o2);
2098     }
2099     return True;
2100 }
2101
2102
2103 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2104     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2105     PyObject *o1, *o2, *o3, *o4;
2106
2107     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2108         return False;
2109
2110     if (isFast) {
2111         o1 = PySequence_Fast_GET_ITEM(source, 0);
2112         o2 = PySequence_Fast_GET_ITEM(source, 1);
2113         o3 = PySequence_Fast_GET_ITEM(source, 2);
2114         o4 = PySequence_Fast_GET_ITEM(source, 3);
2115     }
2116     else {
2117         o1 = PySequence_GetItem(source, 0);
2118         o2 = PySequence_GetItem(source, 1);
2119         o3 = PySequence_GetItem(source, 2);
2120         o4 = PySequence_GetItem(source, 3);
2121     }
2122
2123     *i1 = PyInt_AsLong(o1);
2124     *i2 = PyInt_AsLong(o2);
2125     *i3 = PyInt_AsLong(o3);
2126     *i4 = PyInt_AsLong(o4);
2127
2128     if (! isFast) {
2129         Py_DECREF(o1);
2130         Py_DECREF(o2);
2131         Py_DECREF(o3);
2132         Py_DECREF(o4);
2133     }
2134     return True;
2135 }
2136
2137
2138 //----------------------------------------------------------------------
2139
2140 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2141 {
2142     void* ptr;
2143
2144     if (wxPySwigInstance_Check(source) &&
2145         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2146         return True;
2147
2148     PyErr_Clear();
2149     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2150         return True;
2151
2152     return False;
2153 }
2154
2155 bool wxSize_helper(PyObject* source, wxSize** obj)
2156 {
2157     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2158 }
2159
2160
2161 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2162 {
2163     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2164 }
2165
2166
2167
2168 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2169
2170     // If source is an object instance then it may already be the right type
2171     if (wxPySwigInstance_Check(source)) {
2172         wxRealPoint* ptr;
2173         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2174             goto error;
2175         *obj = ptr;
2176         return True;
2177     }
2178     // otherwise a 2-tuple of floats is expected
2179     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2180         PyObject* o1 = PySequence_GetItem(source, 0);
2181         PyObject* o2 = PySequence_GetItem(source, 1);
2182         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2183             Py_DECREF(o1);
2184             Py_DECREF(o2);
2185             goto error;
2186         }
2187         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2188         Py_DECREF(o1);
2189         Py_DECREF(o2);
2190         return True;
2191     }
2192
2193  error:
2194     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2195     return False;
2196 }
2197
2198
2199
2200 bool wxRect_helper(PyObject* source, wxRect** obj) {
2201
2202     // If source is an object instance then it may already be the right type
2203     if (wxPySwigInstance_Check(source)) {
2204         wxRect* ptr;
2205         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2206             goto error;
2207         *obj = ptr;
2208         return True;
2209     }
2210     // otherwise a 4-tuple of integers is expected
2211     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2212         PyObject* o1 = PySequence_GetItem(source, 0);
2213         PyObject* o2 = PySequence_GetItem(source, 1);
2214         PyObject* o3 = PySequence_GetItem(source, 2);
2215         PyObject* o4 = PySequence_GetItem(source, 3);
2216         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2217             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2218             Py_DECREF(o1);
2219             Py_DECREF(o2);
2220             Py_DECREF(o3);
2221             Py_DECREF(o4);
2222             goto error;
2223         }
2224         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2225                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2226         Py_DECREF(o1);
2227         Py_DECREF(o2);
2228         Py_DECREF(o3);
2229         Py_DECREF(o4);
2230         return True;
2231     }
2232
2233  error:
2234     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2235     return False;
2236 }
2237
2238
2239
2240 bool wxColour_helper(PyObject* source, wxColour** obj) {
2241
2242     // If source is an object instance then it may already be the right type
2243     if (wxPySwigInstance_Check(source)) {
2244         wxColour* ptr;
2245         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2246             goto error;
2247         *obj = ptr;
2248         return True;
2249     }
2250     // otherwise check for a string
2251     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2252         wxString spec = Py2wxString(source);
2253         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2254             long red, green, blue;
2255             red = green = blue = 0;
2256             spec.Mid(1,2).ToLong(&red,   16);
2257             spec.Mid(3,2).ToLong(&green, 16);
2258             spec.Mid(5,2).ToLong(&blue,  16);
2259
2260             **obj = wxColour(red, green, blue);
2261             return True;
2262         }
2263         else {                                       // it's a colour name
2264             **obj = wxColour(spec);
2265             return True;
2266         }
2267     }
2268     // last chance: 3-tuple of integers is expected
2269     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2270         PyObject* o1 = PySequence_GetItem(source, 0);
2271         PyObject* o2 = PySequence_GetItem(source, 1);
2272         PyObject* o3 = PySequence_GetItem(source, 2);
2273         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2274             Py_DECREF(o1);
2275             Py_DECREF(o2);
2276             Py_DECREF(o3);
2277             goto error;
2278         }
2279         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2280         Py_DECREF(o1);
2281         Py_DECREF(o2);
2282         Py_DECREF(o3);
2283         return True;
2284     }
2285
2286  error:
2287     PyErr_SetString(PyExc_TypeError,
2288                     "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
2289     return False;
2290 }
2291
2292
2293 bool wxColour_typecheck(PyObject* source) {
2294
2295     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2296         return True;
2297
2298     if (PyString_Check(source) || PyUnicode_Check(source))
2299         return True;
2300
2301     return False;
2302 }
2303
2304
2305
2306 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2307     // If source is an object instance then it may already be the right type
2308     if (wxPySwigInstance_Check(source)) {
2309         wxPoint2D* ptr;
2310         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2311             goto error;
2312         *obj = ptr;
2313         return True;
2314     }
2315     // otherwise a length-2 sequence of floats is expected
2316     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2317         PyObject* o1 = PySequence_GetItem(source, 0);
2318         PyObject* o2 = PySequence_GetItem(source, 1);
2319         // This should really check for floats, not numbers -- but that would break code.
2320         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2321             Py_DECREF(o1);
2322             Py_DECREF(o2);
2323             goto error;
2324         }
2325         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2326         Py_DECREF(o1);
2327         Py_DECREF(o2);
2328         return True;
2329     }
2330  error:
2331     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2D object.");
2332     return False;
2333 }
2334
2335
2336 //----------------------------------------------------------------------
2337
2338 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
2339
2340     PyObject* list = PyList_New(0);
2341     for (size_t i=0; i < arr.GetCount(); i++) {
2342 #if wxUSE_UNICODE
2343         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2344 #else
2345         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2346 #endif
2347         PyList_Append(list, str);
2348         Py_DECREF(str);
2349     }
2350     return list;
2351 }
2352
2353
2354 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2355
2356     PyObject* list = PyList_New(0);
2357     for (size_t i=0; i < arr.GetCount(); i++) {
2358         PyObject* number = PyInt_FromLong(arr[i]);
2359         PyList_Append(list, number);
2360         Py_DECREF(number);
2361     }
2362     return list;
2363 }
2364
2365
2366 //----------------------------------------------------------------------
2367 //----------------------------------------------------------------------
2368
2369
2370
2371