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