wxPython/src/helpers.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpers.cpp
   3 // Purpose:     Helper functions/classes for the wxPython extension module
   4 //
   5 // Author:      Robin Dunn
   6 //
   7 // Created:     1-July-1997
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13
  14 #undef DEBUG
  15 #include <Python.h>
  16 #include "wx/wxPython/wxPython_int.h"
  17 #include "wx/wxPython/pyistream.h"
  18
  19 #ifdef __WXMSW__
  20 #include <wx/msw/private.h>
  21 #include <wx/msw/winundef.h>
  22 #include <wx/msw/msvcrt.h>
  23 #endif
  24
  25 #ifdef __WXGTK__
  26 #include <gdk/gdk.h>
  27 #include <gdk/gdkx.h>
  28 #include <gtk/gtk.h>
  29 #include <gdk/gdkprivate.h>
  30 #include <wx/gtk/win_gtk.h>
  31 #define GetXWindow(wxwin)   GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
  32 #include <locale.h>
  33 #endif
  34
  35 #ifdef __WXX11__
  36 #include "wx/x11/privx.h"
  37 #define GetXWindow(wxwin)   ((Window)(wxwin)->GetHandle())
  38 #endif
  39
  40 #ifdef __WXMAC__
  41 #include <wx/mac/private.h>
  42 #endif
  43
  44 #include <wx/clipbrd.h>
  45 #include <wx/mimetype.h>
  46 #include <wx/image.h>
  47
  48 //----------------------------------------------------------------------
  49
  50 #if PYTHON_API_VERSION <= 1007 && wxUSE_UNICODE
  51 #error Python must support Unicode to use wxWindows Unicode
  52 #endif
  53
  54 //----------------------------------------------------------------------
  55
  56 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  57 bool wxPyDoCleanup = False;
  58 bool wxPyDoingCleanup = False;
  59
  60
  61 #ifdef WXP_WITH_THREAD
  62 struct wxPyThreadState {
  63     unsigned long  tid;
  64     PyThreadState* tstate;
  65
  66     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  67         : tid(_tid), tstate(_tstate) {}
  68 };
  69
  70 #include <wx/dynarray.h>
  71 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  72 #include <wx/arrimpl.cpp>
  73 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  74
  75 wxPyThreadStateArray* wxPyTStates = NULL;
  76 wxMutex*              wxPyTMutex = NULL;
  77 #endif
  78
  79
  80 static PyObject* wxPython_dict = NULL;
  81 static PyObject* wxPyAssertionError = NULL;
  82 static PyObject* wxPyNoAppError = NULL;
  83
  84 PyObject* wxPyPtrTypeMap = NULL;
  85
  86
  87 #ifdef __WXMSW__             // If building for win32...
  88 //----------------------------------------------------------------------
  89 // This gets run when the DLL is loaded.  We just need to save a handle.
  90 //----------------------------------------------------------------------
  91
  92 BOOL WINAPI DllMain(
  93     HINSTANCE   hinstDLL,    // handle to DLL module
  94     DWORD       fdwReason,   // reason for calling function
  95     LPVOID      lpvReserved  // reserved
  96    )
  97 {
  98     // If wxPython is embedded in another wxWindows app then
  99     // the inatance has already been set.
 100     if (! wxGetInstance())
 101         wxSetInstance(hinstDLL);
 102     return True;
 103 }
 104 #endif
 105
 106 //----------------------------------------------------------------------
 107 // Classes for implementing the wxp main application shell.
 108 //----------------------------------------------------------------------
 109
 110 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 111
 112
 113 wxPyApp::wxPyApp() {
 114     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 115     m_startupComplete = False;
 116 }
 117
 118
 119 wxPyApp::~wxPyApp() {
 120 }
 121
 122
 123 // This one isn't acutally called...  We fake it with _BootstrapApp
 124 bool wxPyApp::OnInit() {
 125     return False;
 126 }
 127
 128
 129 int  wxPyApp::MainLoop() {
 130     int retval = 0;
 131
 132     DeletePendingObjects();
 133     bool initialized = wxTopLevelWindows.GetCount() != 0;
 134     if (initialized) {
 135         if ( m_exitOnFrameDelete == Later ) {
 136             m_exitOnFrameDelete = Yes;
 137         }
 138
 139         retval = wxApp::MainLoop();
 140         OnExit();
 141     }
 142     return retval;
 143 }
 144
 145
 146 bool wxPyApp::OnInitGui() {
 147     bool rval=True;
 148     wxApp::OnInitGui();  // in this case always call the base class version
 149     bool blocked = wxPyBeginBlockThreads();
 150     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 151         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 152     wxPyEndBlockThreads(blocked);
 153     return rval;
 154 }
 155
 156
 157 int wxPyApp::OnExit() {
 158     int rval=0;
 159     bool blocked = wxPyBeginBlockThreads();
 160     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 161         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 162     wxPyEndBlockThreads(blocked);
 163     wxApp::OnExit();  // in this case always call the base class version
 164     return rval;
 165 }
 166
 167
 168 #ifdef __WXDEBUG__
 169 void wxPyApp::OnAssert(const wxChar *file,
 170                      int line,
 171                      const wxChar *cond,
 172                      const wxChar *msg) {
 173
 174     // if we're not fully initialized then just log the error
 175     if (! m_startupComplete) {
 176         wxString buf;
 177         buf.Alloc(4096);
 178         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 179                    file, line, cond);
 180         if (msg != NULL) {
 181             buf += wxT(": ");
 182             buf += msg;
 183         }
 184         wxLogDebug(buf);
 185         return;
 186     }
 187
 188     // If the OnAssert is overloaded in the Python class then call it...
 189     bool found;
 190     bool blocked = wxPyBeginBlockThreads();
 191     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 192         PyObject* fso = wx2PyString(file);
 193         PyObject* cso = wx2PyString(file);
 194         PyObject* mso;
 195         if (msg != NULL)
 196             mso = wx2PyString(file);
 197         else {
 198             mso = Py_None; Py_INCREF(Py_None);
 199         }
 200         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 201         Py_DECREF(fso);
 202         Py_DECREF(cso);
 203         Py_DECREF(mso);
 204     }
 205     wxPyEndBlockThreads(blocked);
 206
 207     // ...otherwise do our own thing with it
 208     if (! found) {
 209         // ignore it?
 210         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 211             return;
 212
 213         // turn it into a Python exception?
 214         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 215             wxString buf;
 216             buf.Alloc(4096);
 217             buf.Printf(wxT("C++ assertion \"%s\" failed in %s(%d)"), cond, file, line);
 218             if (msg != NULL) {
 219                 buf += wxT(": ");
 220                 buf += msg;
 221             }
 222
 223             // set the exception
 224             bool blocked = wxPyBeginBlockThreads();
 225             PyObject* s = wx2PyString(buf);
 226             PyErr_SetObject(wxPyAssertionError, s);
 227             Py_DECREF(s);
 228             wxPyEndBlockThreads(blocked);
 229
 230             // Now when control returns to whatever API wrapper was called from
 231             // Python it should detect that an exception is set and will return
 232             // NULL, signalling the exception to Python.
 233         }
 234
 235         // Send it to the normal log destination, but only if
 236         // not _DIALOG because it will call this too
 237         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 238             wxString buf;
 239             buf.Alloc(4096);
 240             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 241                        file, line, cond);
 242             if (msg != NULL) {
 243                 buf += wxT(": ");
 244                 buf += msg;
 245             }
 246             wxLogDebug(buf);
 247         }
 248
 249         // do the normal wx assert dialog?
 250         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 251             wxApp::OnAssert(file, line, cond, msg);
 252     }
 253 }
 254 #endif
 255
 256     // For catching Apple Events
 257 void wxPyApp::MacOpenFile(const wxString &fileName)
 258 {
 259     bool blocked = wxPyBeginBlockThreads();
 260     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 261         PyObject* s = wx2PyString(fileName);
 262         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 263         Py_DECREF(s);
 264     }
 265     wxPyEndBlockThreads(blocked);
 266 }
 267
 268 void wxPyApp::MacPrintFile(const wxString &fileName)
 269 {
 270     bool blocked = wxPyBeginBlockThreads();
 271     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 272         PyObject* s = wx2PyString(fileName);
 273         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 274         Py_DECREF(s);
 275     }
 276     wxPyEndBlockThreads(blocked);
 277 }
 278
 279 void wxPyApp::MacNewFile()
 280 {
 281     bool blocked = wxPyBeginBlockThreads();
 282     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 283         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 284     wxPyEndBlockThreads(blocked);
 285 }
 286
 287 void wxPyApp::MacReopenApp()
 288 {
 289     bool blocked = wxPyBeginBlockThreads();
 290     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 291         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 292     wxPyEndBlockThreads(blocked);
 293 }
 294
 295
 296 /*static*/
 297 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 298 #ifdef __WXMAC__
 299     return s_macSupportPCMenuShortcuts;
 300 #else
 301     return 0;
 302 #endif
 303 }
 304
 305 /*static*/
 306 long wxPyApp::GetMacAboutMenuItemId() {
 307 #ifdef __WXMAC__
 308     return s_macAboutMenuItemId;
 309 #else
 310     return 0;
 311 #endif
 312 }
 313
 314 /*static*/
 315 long wxPyApp::GetMacPreferencesMenuItemId() {
 316 #ifdef __WXMAC__
 317     return s_macPreferencesMenuItemId;
 318 #else
 319     return 0;
 320 #endif
 321 }
 322
 323 /*static*/
 324 long wxPyApp::GetMacExitMenuItemId() {
 325 #ifdef __WXMAC__
 326     return s_macExitMenuItemId;
 327 #else
 328     return 0;
 329 #endif
 330 }
 331
 332 /*static*/
 333 wxString wxPyApp::GetMacHelpMenuTitleName() {
 334 #ifdef __WXMAC__
 335     return s_macHelpMenuTitleName;
 336 #else
 337     return wxEmptyString;
 338 #endif
 339 }
 340
 341 /*static*/
 342 void wxPyApp::SetMacSupportPCMenuShortcuts(bool val) {
 343 #ifdef __WXMAC__
 344     s_macSupportPCMenuShortcuts = val;
 345 #endif
 346 }
 347
 348 /*static*/
 349 void wxPyApp::SetMacAboutMenuItemId(long val) {
 350 #ifdef __WXMAC__
 351     s_macAboutMenuItemId = val;
 352 #endif
 353 }
 354
 355 /*static*/
 356 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 357 #ifdef __WXMAC__
 358     s_macPreferencesMenuItemId = val;
 359 #endif
 360 }
 361
 362 /*static*/
 363 void wxPyApp::SetMacExitMenuItemId(long val) {
 364 #ifdef __WXMAC__
 365     s_macExitMenuItemId = val;
 366 #endif
 367 }
 368
 369 /*static*/
 370 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 371 #ifdef __WXMAC__
 372     s_macHelpMenuTitleName = val;
 373 #endif
 374 }
 375
 376
 377 // This finishes the initialization of wxWindows and then calls the OnInit
 378 // that should be present in the derived (Python) class.
 379 void wxPyApp::_BootstrapApp()
 380 {
 381     static      bool haveInitialized = false;
 382     bool        result, blocked;
 383     PyObject*   retval = NULL;
 384     PyObject*   pyint  = NULL;
 385
 386
 387     // Only initialize wxWidgets once
 388     if (! haveInitialized) {
 389
 390         // Get any command-line args passed to this program from the sys module
 391         int    argc = 0;
 392         char** argv = NULL;
 393         blocked = wxPyBeginBlockThreads();
 394         PyObject* sysargv = PySys_GetObject("argv");
 395         if (sysargv != NULL) {
 396             argc = PyList_Size(sysargv);
 397             argv = new char*[argc+1];
 398             int x;
 399             for(x=0; x<argc; x++) {
 400                 PyObject *pyArg = PyList_GetItem(sysargv, x);
 401                 argv[x] = PyString_AsString(pyArg);
 402             }
 403             argv[argc] = NULL;
 404         }
 405         wxPyEndBlockThreads(blocked);
 406
 407         // Initialize wxWidgets
 408         result = wxEntryStart(argc, argv);
 409         delete [] argv;
 410
 411         blocked = wxPyBeginBlockThreads();
 412         if (! result)  {
 413             PyErr_SetString(PyExc_SystemError,
 414                             "wxEntryStart failed, unable to initialize wxWidgets!"
 415 #ifdef __WXGTK__
 416                             "  (Is DISPLAY set properly?)"
 417 #endif
 418                 );
 419             goto error;
 420         }
 421
 422         // On wxGTK the locale will be changed to match the system settings, but
 423         // Python needs to have LC_NUMERIC set to "C" in order for the floating
 424         // point conversions and such to work right.
 425 #ifdef __WXGTK__
 426         setlocale(LC_NUMERIC, "C");
 427 #endif
 428
 429         // The stock objects were all NULL when they were loaded into
 430         // SWIG generated proxies, so re-init those now...
 431         wxPy_ReinitStockObjects(3);
 432
 433         wxPyEndBlockThreads(blocked);
 434         haveInitialized = true;
 435     }
 436
 437     // It's now ok to generate exceptions for assertion errors.
 438     wxPythonApp->SetStartupComplete(True);
 439
 440     // Call the Python wxApp's OnInit function
 441     blocked = wxPyBeginBlockThreads();
 442     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 443
 444         PyObject* method = m_myInst.GetLastFound();
 445         PyObject* argTuple = PyTuple_New(0);
 446         retval = PyEval_CallObject(method, argTuple);
 447         Py_DECREF(argTuple);
 448         Py_DECREF(method);
 449         if (retval == NULL)
 450             goto error;
 451
 452         pyint = PyNumber_Int(retval);
 453         if (! pyint) {
 454             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 455             goto error;
 456         }
 457         result = PyInt_AS_LONG(pyint);
 458     }
 459     else {
 460         // Is it okay if there is no OnInit?  Probably so...
 461         result = True;
 462     }
 463
 464     if (! result) {
 465         PyErr_SetString(PyExc_SystemExit, "OnInit returned False, exiting...");
 466     }
 467
 468  error:
 469     Py_XDECREF(retval);
 470     Py_XDECREF(pyint);
 471
 472     wxPyEndBlockThreads(blocked);
 473 };
 474
 475 //---------------------------------------------------------------------
 476 //----------------------------------------------------------------------
 477
 478
 479 #if 0
 480 static char* wxPyCopyCString(const wxChar* src)
 481 {
 482     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 483     size_t len = strlen(buff);
 484     char*  dest = new char[len+1];
 485     strcpy(dest, buff);
 486     return dest;
 487 }
 488
 489 #if wxUSE_UNICODE
 490 static char* wxPyCopyCString(const char* src)   // we need a char version too
 491 {
 492     size_t len = strlen(src);
 493     char*  dest = new char[len+1];
 494     strcpy(dest, src);
 495     return dest;
 496 }
 497 #endif
 498
 499 static wxChar* wxPyCopyWString(const char *src)
 500 {
 501     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 502     wxString str(src, *wxConvCurrent);
 503     return copystring(str);
 504 }
 505
 506 #if wxUSE_UNICODE
 507 static wxChar* wxPyCopyWString(const wxChar *src)
 508 {
 509     return copystring(src);
 510 }
 511 #endif
 512 #endif
 513
 514
 515 inline const char* dropwx(const char* name) {
 516     if (name[0] == 'w' && name[1] == 'x')
 517         return name+2;
 518     else
 519         return name;
 520 }
 521
 522 //----------------------------------------------------------------------
 523
 524 // This function is called when the wx._core_ module is imported to do some
 525 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 526 // wxPyApp::_BootstrapApp
 527 void __wxPyPreStart(PyObject* moduleDict)
 528 {
 529
 530 #ifdef __WXMSW__
 531 //     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF
 532 //                     | _CRTDBG_CHECK_ALWAYS_DF
 533 //                     | _CRTDBG_DELAY_FREE_MEM_DF
 534 //         );
 535 #endif
 536
 537 #ifdef WXP_WITH_THREAD
 538     PyEval_InitThreads();
 539     wxPyTStates = new wxPyThreadStateArray;
 540     wxPyTMutex = new wxMutex;
 541
 542     // Save the current (main) thread state in our array
 543     PyThreadState* tstate = wxPyBeginAllowThreads();
 544     wxPyEndAllowThreads(tstate);
 545 #endif
 546
 547     // Ensure that the build options in the DLL (or whatever) match this build
 548     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 549
 550     // Init the stock objects to a non-NULL value so SWIG doesn't create them as None
 551     wxPy_ReinitStockObjects(1);
 552
 553     wxInitAllImageHandlers();
 554 }
 555
 556
 557
 558 void __wxPyCleanup() {
 559     wxPyDoingCleanup = True;
 560     if (wxPyDoCleanup) {
 561         wxPyDoCleanup = False;
 562         wxEntryCleanup();
 563     }
 564 #ifdef WXP_WITH_THREAD
 565     delete wxPyTMutex;
 566     wxPyTMutex = NULL;
 567     wxPyTStates->Empty();
 568     delete wxPyTStates;
 569     wxPyTStates = NULL;
 570 #endif
 571 }
 572
 573
 574 // Save a reference to the dictionary of the wx._core module, and inject
 575 // a few more things into it.
 576 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 577 {
 578
 579     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 580         return NULL;
 581
 582     if (!PyDict_Check(wxPython_dict)) {
 583         PyErr_SetString(PyExc_TypeError,
 584                         "_wxPySetDictionary must have dictionary object!");
 585         return NULL;
 586     }
 587
 588     if (! wxPyPtrTypeMap)
 589         wxPyPtrTypeMap = PyDict_New();
 590     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 591
 592     // Create an exception object to use for wxASSERTions
 593     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 594                                             PyExc_AssertionError, NULL);
 595     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 596
 597     // Create an exception object to use when the app object hasn't been created yet
 598     wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
 599                                         PyExc_RuntimeError, NULL);
 600     PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
 601
 602
 603
 604 #ifdef __WXMOTIF__
 605 #define wxPlatform "__WXMOTIF__"
 606 #define wxPlatName "wxMotif"
 607 #endif
 608 #ifdef __WXX11__
 609 #define wxPlatform "__WXX11__"
 610 #define wxPlatName "wxX11"
 611 #endif
 612 #ifdef __WXGTK__
 613 #define wxPlatform "__WXGTK__"
 614 #define wxPlatName "wxGTK"
 615 #endif
 616 #ifdef __WXMSW__
 617 #define wxPlatform "__WXMSW__"
 618 #define wxPlatName "wxMSW"
 619 #endif
 620 #ifdef __WXMAC__
 621 #define wxPlatform "__WXMAC__"
 622 #define wxPlatName "wxMac"
 623 #endif
 624
 625 #ifdef __WXDEBUG__
 626     int wxdebug = 1;
 627 #else
 628     int wxdebug = 0;
 629 #endif
 630
 631     // These should be deprecated in favor of the PlatformInfo tuple built below...
 632     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 633     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 634     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 635
 636
 637     PyObject* PlatInfo = PyList_New(0);
 638     PyObject* obj;
 639
 640 #define _AddInfoString(st) \
 641     obj = PyString_FromString(st); \
 642     PyList_Append(PlatInfo, obj); \
 643     Py_DECREF(obj)
 644
 645     _AddInfoString(wxPlatform);
 646     _AddInfoString(wxPlatName);
 647 #if wxUSE_UNICODE
 648     _AddInfoString("unicode");
 649 #else
 650     _AddInfoString("ascii");
 651 #endif
 652 #ifdef __WXGTK__
 653 #ifdef __WXGTK20__
 654     _AddInfoString("gtk2");
 655 #else
 656     _AddInfoString("gtk1");
 657 #endif
 658 #endif
 659 #ifdef __WXDEBUG__
 660     _AddInfoString("wx-assertions-on");
 661 #else
 662     _AddInfoString("wx-assertions-off");
 663 #endif
 664
 665 #undef _AddInfoString
 666
 667     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 668     Py_DECREF(PlatInfo);
 669     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 670
 671     RETURN_NONE();
 672 }
 673
 674
 675 //---------------------------------------------------------------------------
 676
 677 // Python's PyInstance_Check does not return True for instances of new-style
 678 // classes.  This should get close enough for both new and old classes but I
 679 // should re-evaluate the need for doing instance checks...
 680 bool wxPyInstance_Check(PyObject* obj) {
 681     return PyObject_HasAttrString(obj, "__class__") != 0;
 682 }
 683
 684
 685 // This one checks if the object is an instance of a SWIG proxy class (it has
 686 // a .this attribute)
 687 bool wxPySwigInstance_Check(PyObject* obj) {
 688     return PyObject_HasAttrString(obj, "this") != 0;
 689 }
 690
 691 //---------------------------------------------------------------------------
 692
 693 // The stock objects are no longer created when the wx._core_ module is
 694 // imported, but only after the app object has been created.  The
 695 // wxPy_ReinitStockObjects function will be called 3 times to pass the stock
 696 // objects though various stages of evolution:
 697 //
 698 //   pass 1: Set all the pointers to a non-NULL value so the Python proxy
 699 //           object will be created (otherwise SWIG will just use None.)
 700 //
 701 //   pass 2: After the module has been imported and the python proxys have
 702 //           been created, then set the __class__ to be _wxPyUnbornObject so
 703 //           it will catch any access to the object and will raise an exception.
 704 //
 705 //   pass 3: Finally, from BootstrapApp patch things up so the stock objects
 706 //           can be used.
 707
 708
 709 PyObject* __wxPyFixStockObjects(PyObject* /* self */, PyObject* args)
 710 {
 711     wxPy_ReinitStockObjects(2);
 712     RETURN_NONE();
 713 }
 714
 715
 716 static void rsoPass2(const char* name)
 717 {
 718     static PyObject* unbornObjectClass = NULL;
 719     PyObject* obj;
 720
 721     if (unbornObjectClass == NULL) {
 722         unbornObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyUnbornObject");
 723         Py_INCREF(unbornObjectClass);
 724     }
 725
 726     // Find the object instance
 727     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 728     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 729     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 730
 731     // Change its class
 732     PyObject_SetAttrString(obj, "__class__",  unbornObjectClass);
 733
 734 }
 735
 736 static void rsoPass3(const char* name, const char* classname, void* ptr)
 737 {
 738     PyObject* obj;
 739     PyObject* classobj;
 740     PyObject* ptrobj;
 741
 742     // Find the object instance
 743     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 744     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 745     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 746
 747     // Find the class object and put it back in the instance
 748     classobj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(classname));
 749     wxCHECK_RET(classobj != NULL, wxT("Unable to find stock class object"));
 750     PyObject_SetAttrString(obj, "__class__",  classobj);
 751
 752     // Rebuild the .this swigified pointer with the new value of the C++ pointer
 753     ptrobj = wxPyMakeSwigPtr(ptr, wxString(classname, *wxConvCurrent));
 754     PyObject_SetAttrString(obj, "this", ptrobj);
 755     Py_DECREF(ptrobj);
 756 }
 757
 758
 759
 760 void wxPy_ReinitStockObjects(int pass)
 761 {
 762
 763     // If there is already an App object then wxPython is probably embedded in
 764     // a wx C++ application, so there is no need to do all this.
 765     static bool embedded = false;
 766     if ((pass == 1 || pass == 2) && wxTheApp) {
 767         embedded = true;
 768         return;
 769     }
 770     if (pass == 3 && embedded)
 771         return;
 772
 773
 774 #define REINITOBJ(name, classname) \
 775     if (pass == 1) { name = (classname*)0xC0C0C0C0; } \
 776     else if (pass == 2) { rsoPass2(#name); } \
 777     else if (pass == 3) { rsoPass3(#name, #classname, (void*)name); }
 778
 779
 780 #define REINITOBJ2(name, classname) \
 781     if (pass == 1) { } \
 782     else if (pass == 2) { rsoPass2(#name); } \
 783     else if (pass == 3) { rsoPass3(#name, #classname, (void*)&name); }
 784
 785
 786     REINITOBJ(wxNORMAL_FONT, wxFont);
 787     REINITOBJ(wxSMALL_FONT, wxFont);
 788     REINITOBJ(wxITALIC_FONT, wxFont);
 789     REINITOBJ(wxSWISS_FONT, wxFont);
 790
 791     REINITOBJ(wxRED_PEN, wxPen);
 792     REINITOBJ(wxCYAN_PEN, wxPen);
 793     REINITOBJ(wxGREEN_PEN, wxPen);
 794     REINITOBJ(wxBLACK_PEN, wxPen);
 795     REINITOBJ(wxWHITE_PEN, wxPen);
 796     REINITOBJ(wxTRANSPARENT_PEN, wxPen);
 797     REINITOBJ(wxBLACK_DASHED_PEN, wxPen);
 798     REINITOBJ(wxGREY_PEN, wxPen);
 799     REINITOBJ(wxMEDIUM_GREY_PEN, wxPen);
 800     REINITOBJ(wxLIGHT_GREY_PEN, wxPen);
 801
 802     REINITOBJ(wxBLUE_BRUSH, wxBrush);
 803     REINITOBJ(wxGREEN_BRUSH, wxBrush);
 804     REINITOBJ(wxWHITE_BRUSH, wxBrush);
 805     REINITOBJ(wxBLACK_BRUSH, wxBrush);
 806     REINITOBJ(wxTRANSPARENT_BRUSH, wxBrush);
 807     REINITOBJ(wxCYAN_BRUSH, wxBrush);
 808     REINITOBJ(wxRED_BRUSH, wxBrush);
 809     REINITOBJ(wxGREY_BRUSH, wxBrush);
 810     REINITOBJ(wxMEDIUM_GREY_BRUSH, wxBrush);
 811     REINITOBJ(wxLIGHT_GREY_BRUSH, wxBrush);
 812
 813     REINITOBJ(wxBLACK, wxColour);
 814     REINITOBJ(wxWHITE, wxColour);
 815     REINITOBJ(wxRED, wxColour);
 816     REINITOBJ(wxBLUE, wxColour);
 817     REINITOBJ(wxGREEN, wxColour);
 818     REINITOBJ(wxCYAN, wxColour);
 819     REINITOBJ(wxLIGHT_GREY, wxColour);
 820
 821     REINITOBJ(wxSTANDARD_CURSOR, wxCursor);
 822     REINITOBJ(wxHOURGLASS_CURSOR, wxCursor);
 823     REINITOBJ(wxCROSS_CURSOR, wxCursor);
 824
 825     REINITOBJ2(wxNullBitmap, wxBitmap);
 826     REINITOBJ2(wxNullIcon, wxIcon);
 827     REINITOBJ2(wxNullCursor, wxCursor);
 828     REINITOBJ2(wxNullPen, wxPen);
 829     REINITOBJ2(wxNullBrush, wxBrush);
 830     REINITOBJ2(wxNullPalette, wxPalette);
 831     REINITOBJ2(wxNullFont, wxFont);
 832     REINITOBJ2(wxNullColour, wxColour);
 833
 834     REINITOBJ(wxTheFontList, wxFontList);
 835     REINITOBJ(wxThePenList, wxPenList);
 836     REINITOBJ(wxTheBrushList, wxBrushList);
 837     REINITOBJ(wxTheColourDatabase, wxColourDatabase);
 838
 839
 840     REINITOBJ2(wxDefaultValidator, wxValidator);
 841     REINITOBJ2(wxNullImage, wxImage);
 842     REINITOBJ2(wxNullAcceleratorTable, wxAcceleratorTable);
 843
 844 #undef REINITOBJ
 845 #undef REINITOBJ2
 846 }
 847
 848 //---------------------------------------------------------------------------
 849
 850 // Check for existence of a wxApp, setting an exception if there isn't one.
 851 // This doesn't need to aquire the GIL because it should only be called from
 852 // an %exception before the lock is released.
 853
 854 bool wxPyCheckForApp() {
 855     if (wxTheApp != NULL)
 856         return true;
 857     else {
 858         PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
 859         return false;
 860     }
 861 }
 862
 863 //---------------------------------------------------------------------------
 864
 865
 866 void wxPyClientData_dtor(wxPyClientData* self) {
 867     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 868                                         // may have already garbage collected the object...
 869         bool blocked = wxPyBeginBlockThreads();
 870         Py_DECREF(self->m_obj);
 871         self->m_obj = NULL;
 872         wxPyEndBlockThreads(blocked);
 873     }
 874 }
 875
 876 void wxPyUserData_dtor(wxPyUserData* self) {
 877     if (! wxPyDoingCleanup) {
 878         bool blocked = wxPyBeginBlockThreads();
 879         Py_DECREF(self->m_obj);
 880         self->m_obj = NULL;
 881         wxPyEndBlockThreads(blocked);
 882     }
 883 }
 884
 885
 886 // This is called when an OOR controled object is being destroyed.  Although
 887 // the C++ object is going away there is no way to force the Python object
 888 // (and all references to it) to die too.  This causes problems (crashes) in
 889 // wxPython when a python shadow object attempts to call a C++ method using
 890 // the now bogus pointer... So to try and prevent this we'll do a little black
 891 // magic and change the class of the python instance to a class that will
 892 // raise an exception for any attempt to call methods with it.  See
 893 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 894 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 895
 896     static PyObject* deadObjectClass = NULL;
 897
 898     bool blocked = wxPyBeginBlockThreads();
 899     if (deadObjectClass == NULL) {
 900         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 901         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 902         // will lead to a deadlock when it tries to aquire the GIL again.
 903         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 904         Py_INCREF(deadObjectClass);
 905     }
 906
 907
 908     // Only if there is more than one reference to the object
 909     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 ) {
 910         // bool isInstance = wxPyInstance_Check(self->m_obj);
 911         // TODO same here
 912         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 913
 914         // Call __del__, if there is one.
 915         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 916         if (func) {
 917             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 918             Py_XDECREF(rv);
 919             Py_DECREF(func);
 920         }
 921         if (PyErr_Occurred())
 922             PyErr_Clear();      // just ignore it for now
 923
 924
 925         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 926         if (dict) {
 927             // Clear the instance's dictionary
 928             PyDict_Clear(dict);
 929
 930             // put the name of the old class into the instance, and then reset the
 931             // class to be the dead class.
 932             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 933             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 934             PyDict_SetItemString(dict, "_name", name);
 935             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 936             //Py_INCREF(deadObjectClass);
 937             Py_DECREF(klass);
 938             Py_DECREF(name);
 939         }
 940     }
 941
 942     // m_obj is DECREF'd in the base class dtor...
 943     wxPyEndBlockThreads(blocked);
 944 }
 945
 946
 947 //---------------------------------------------------------------------------
 948 // Stuff used by OOR to find the right wxPython class type to return and to
 949 // build it.
 950
 951
 952 // The pointer type map is used when the "pointer" type name generated by SWIG
 953 // is not the same as the shadow class name, for example wxPyTreeCtrl
 954 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 955 // so we'll just make it a Python dictionary in the wx module's namespace.
 956 // (See __wxSetDictionary)
 957 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 958     if (! wxPyPtrTypeMap)
 959         wxPyPtrTypeMap = PyDict_New();
 960     PyDict_SetItemString(wxPyPtrTypeMap,
 961                          (char*)commonName,
 962                          PyString_FromString((char*)ptrName));
 963 }
 964
 965
 966
 967
 968 PyObject*  wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
 969     PyObject* target = NULL;
 970     bool      isEvtHandler = False;
 971
 972     if (source) {
 973         // If it's derived from wxEvtHandler then there may
 974         // already be a pointer to a Python object that we can use
 975         // in the OOR data.
 976         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 977             isEvtHandler = True;
 978             wxEvtHandler* eh = (wxEvtHandler*)source;
 979             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 980             if (data) {
 981                 target = data->m_obj;
 982                 if (target)
 983                     Py_INCREF(target);
 984             }
 985         }
 986
 987         if (! target) {
 988             // Otherwise make it the old fashioned way by making a new shadow
 989             // object and putting this pointer in it.  Look up the class
 990             // heirarchy until we find a class name that is located in the
 991             // python module.
 992             const wxClassInfo* info   = source->GetClassInfo();
 993             wxString           name   = info->GetClassName();
 994             bool               exists = wxPyCheckSwigType(name);
 995             while (info && !exists) {
 996                 info = info->GetBaseClass1();
 997                 name = info->GetClassName();
 998                 exists = wxPyCheckSwigType(name);
 999             }
1000             if (info) {
1001                 target = wxPyConstructObject((void*)source, name, setThisOwn);
1002                 if (target && isEvtHandler)
1003                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
1004             } else {
1005                 wxString msg(wxT("wxPython class not found for "));
1006                 msg += source->GetClassInfo()->GetClassName();
1007                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
1008                 target = NULL;
1009             }
1010         }
1011     } else {  // source was NULL so return None.
1012         Py_INCREF(Py_None); target = Py_None;
1013     }
1014     return target;
1015 }
1016
1017
1018 PyObject*  wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
1019     PyObject* target = NULL;
1020
1021     if (source && wxIsKindOf(source, wxSizer)) {
1022         // If it's derived from wxSizer then there may already be a pointer to
1023         // a Python object that we can use in the OOR data.
1024         wxSizer* sz = (wxSizer*)source;
1025         wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
1026         if (data) {
1027             target = data->m_obj;
1028             if (target)
1029                 Py_INCREF(target);
1030         }
1031     }
1032     if (! target) {
1033         target = wxPyMake_wxObject(source, setThisOwn, False);
1034         if (target != Py_None)
1035             ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
1036     }
1037     return target;
1038 }
1039
1040
1041 //---------------------------------------------------------------------------
1042
1043
1044 #ifdef WXP_WITH_THREAD
1045 inline
1046 unsigned long wxPyGetCurrentThreadId() {
1047     return wxThread::GetCurrentId();
1048 }
1049
1050 static wxPyThreadState gs_shutdownTState;
1051
1052 static
1053 wxPyThreadState* wxPyGetThreadState() {
1054     if (wxPyTMutex == NULL) // Python is shutting down...
1055         return &gs_shutdownTState;
1056
1057     unsigned long ctid = wxPyGetCurrentThreadId();
1058     wxPyThreadState* tstate = NULL;
1059
1060     wxPyTMutex->Lock();
1061     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1062         wxPyThreadState& info = wxPyTStates->Item(i);
1063         if (info.tid == ctid) {
1064             tstate = &info;
1065             break;
1066         }
1067     }
1068     wxPyTMutex->Unlock();
1069     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
1070     return tstate;
1071 }
1072
1073
1074 static
1075 void wxPySaveThreadState(PyThreadState* tstate) {
1076     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
1077         gs_shutdownTState.tstate = tstate;
1078         return;
1079     }
1080     unsigned long ctid = wxPyGetCurrentThreadId();
1081     wxPyTMutex->Lock();
1082     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1083         wxPyThreadState& info = wxPyTStates->Item(i);
1084         if (info.tid == ctid) {
1085 #if 0
1086             if (info.tstate != tstate)
1087                 wxLogMessage("*** tstate mismatch!???");
1088 #endif
1089             // info.tstate = tstate;    *** DO NOT update existing ones???
1090             // Normally it will never change, but apparently COM callbacks
1091             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
1092             // tstate which will then be garbage the next time we try to use
1093             // it...
1094             wxPyTMutex->Unlock();
1095             return;
1096         }
1097     }
1098     // not found, so add it...
1099     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
1100     wxPyTMutex->Unlock();
1101 }
1102
1103 #endif
1104
1105
1106
1107 // Calls from Python to wxWindows code are wrapped in calls to these
1108 // functions:
1109
1110 PyThreadState* wxPyBeginAllowThreads() {
1111 #ifdef WXP_WITH_THREAD
1112     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1113     wxPySaveThreadState(saved);
1114     return saved;
1115 #else
1116     return NULL;
1117 #endif
1118 }
1119
1120 void wxPyEndAllowThreads(PyThreadState* saved) {
1121 #ifdef WXP_WITH_THREAD
1122     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1123 #endif
1124 }
1125
1126
1127
1128 // Calls from wxWindows back to Python code, or even any PyObject
1129 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1130
1131 bool wxPyBeginBlockThreads() {
1132 #ifdef WXP_WITH_THREAD
1133     // This works in for 2.3, maybe a good alternative to find the needed tstate?
1134     // PyThreadState *check = PyGILState_GetThisThreadState();
1135
1136     PyThreadState *current = _PyThreadState_Current;
1137
1138     // Only block if there wasn't already a tstate, or if the current one is
1139     // not the one we are wanting to change to.  This should prevent deadlock
1140     // if there are nested calls to wxPyBeginBlockThreads
1141     bool blocked = false;
1142     wxPyThreadState* tstate = wxPyGetThreadState();
1143     if (current != tstate->tstate) {
1144         PyEval_RestoreThread(tstate->tstate);
1145         blocked = true;
1146     }
1147     return blocked;
1148 #endif
1149 }
1150
1151
1152 void wxPyEndBlockThreads(bool blocked) {
1153 #ifdef WXP_WITH_THREAD
1154     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1155     // The value of blocked passed in needs to be the same as that returned
1156     // from wxPyBeginBlockThreads at the same nesting level.
1157     if ( blocked ) {
1158         PyEval_SaveThread();
1159     }
1160 #endif
1161 }
1162
1163
1164 //---------------------------------------------------------------------------
1165 // wxPyInputStream and wxPyCBInputStream methods
1166
1167
1168 void wxPyInputStream::close() {
1169     /* do nothing for now */
1170 }
1171
1172 void wxPyInputStream::flush() {
1173     /* do nothing for now */
1174 }
1175
1176 bool wxPyInputStream::eof() {
1177     if (m_wxis)
1178         return m_wxis->Eof();
1179     else
1180         return True;
1181 }
1182
1183 wxPyInputStream::~wxPyInputStream() {
1184     /* do nothing */
1185 }
1186
1187
1188
1189
1190 PyObject* wxPyInputStream::read(int size) {
1191     PyObject* obj = NULL;
1192     wxMemoryBuffer buf;
1193     const int BUFSIZE = 1024;
1194
1195     // check if we have a real wxInputStream to work with
1196     if (!m_wxis) {
1197         bool blocked = wxPyBeginBlockThreads();
1198         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1199         wxPyEndBlockThreads(blocked);
1200         return NULL;
1201     }
1202
1203     if (size < 0) {
1204         // read while bytes are available on the stream
1205         while ( m_wxis->CanRead() ) {
1206             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1207             buf.UngetAppendBuf(m_wxis->LastRead());
1208         }
1209
1210     } else {  // Read only size number of characters
1211         m_wxis->Read(buf.GetWriteBuf(size), size);
1212         buf.UngetWriteBuf(m_wxis->LastRead());
1213     }
1214
1215     // error check
1216     bool blocked = wxPyBeginBlockThreads();
1217     wxStreamError err = m_wxis->GetLastError();
1218     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1219         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1220     }
1221     else {
1222         // We use only strings for the streams, not unicode
1223         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1224     }
1225     wxPyEndBlockThreads(blocked);
1226     return obj;
1227 }
1228
1229
1230 PyObject* wxPyInputStream::readline(int size) {
1231     PyObject* obj = NULL;
1232     wxMemoryBuffer buf;
1233     int i;
1234     char ch;
1235
1236     // check if we have a real wxInputStream to work with
1237     if (!m_wxis) {
1238         bool blocked = wxPyBeginBlockThreads();
1239         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1240         wxPyEndBlockThreads(blocked);
1241         return NULL;
1242     }
1243
1244     // read until \n or byte limit reached
1245     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1246         ch = m_wxis->GetC();
1247         buf.AppendByte(ch);
1248     }
1249
1250     // errorcheck
1251     bool blocked = wxPyBeginBlockThreads();
1252     wxStreamError err = m_wxis->GetLastError();
1253     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1254         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1255     }
1256     else {
1257         // We use only strings for the streams, not unicode
1258         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1259     }
1260     wxPyEndBlockThreads(blocked);
1261     return obj;
1262 }
1263
1264
1265 PyObject* wxPyInputStream::readlines(int sizehint) {
1266     PyObject* pylist;
1267
1268     // check if we have a real wxInputStream to work with
1269     if (!m_wxis) {
1270         bool blocked = wxPyBeginBlockThreads();
1271         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1272         wxPyEndBlockThreads(blocked);
1273         return NULL;
1274     }
1275
1276     // init list
1277     bool blocked = wxPyBeginBlockThreads();
1278     pylist = PyList_New(0);
1279     wxPyEndBlockThreads(blocked);
1280
1281     if (!pylist) {
1282         bool blocked = wxPyBeginBlockThreads();
1283         PyErr_NoMemory();
1284         wxPyEndBlockThreads(blocked);
1285         return NULL;
1286     }
1287
1288     // read sizehint bytes or until EOF
1289     int i;
1290     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1291         PyObject* s = this->readline();
1292         if (s == NULL) {
1293             bool blocked = wxPyBeginBlockThreads();
1294             Py_DECREF(pylist);
1295             wxPyEndBlockThreads(blocked);
1296             return NULL;
1297         }
1298         bool blocked = wxPyBeginBlockThreads();
1299         PyList_Append(pylist, s);
1300         i += PyString_Size(s);
1301         wxPyEndBlockThreads(blocked);
1302     }
1303
1304     // error check
1305     wxStreamError err = m_wxis->GetLastError();
1306     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1307         bool blocked = wxPyBeginBlockThreads();
1308         Py_DECREF(pylist);
1309         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1310         wxPyEndBlockThreads(blocked);
1311         return NULL;
1312     }
1313
1314     return pylist;
1315 }
1316
1317
1318 void wxPyInputStream::seek(int offset, int whence) {
1319     if (m_wxis)
1320         m_wxis->SeekI(offset, wxSeekMode(whence));
1321 }
1322
1323 int wxPyInputStream::tell(){
1324     if (m_wxis)
1325         return m_wxis->TellI();
1326     else return 0;
1327 }
1328
1329
1330
1331
1332 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1333     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1334 {}
1335
1336
1337 wxPyCBInputStream::~wxPyCBInputStream() {
1338     bool blocked=false;
1339     if (m_block) blocked = wxPyBeginBlockThreads();
1340     Py_XDECREF(m_read);
1341     Py_XDECREF(m_seek);
1342     Py_XDECREF(m_tell);
1343     if (m_block) wxPyEndBlockThreads(blocked);
1344 }
1345
1346
1347 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1348     bool blocked=false;
1349     if (block) blocked = wxPyBeginBlockThreads();
1350
1351     PyObject* read = getMethod(py, "read");
1352     PyObject* seek = getMethod(py, "seek");
1353     PyObject* tell = getMethod(py, "tell");
1354
1355     if (!read) {
1356         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1357         Py_XDECREF(read);
1358         Py_XDECREF(seek);
1359         Py_XDECREF(tell);
1360         if (block) wxPyEndBlockThreads(blocked);
1361         return NULL;
1362     }
1363
1364     if (block) wxPyEndBlockThreads(blocked);
1365     return new wxPyCBInputStream(read, seek, tell, block);
1366 }
1367
1368
1369 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1370     return wxPyCBInputStream::create(py, block);
1371 }
1372
1373 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1374     if (!PyObject_HasAttrString(py, name))
1375         return NULL;
1376     PyObject* o = PyObject_GetAttrString(py, name);
1377     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1378         Py_DECREF(o);
1379         return NULL;
1380     }
1381     return o;
1382 }
1383
1384
1385 size_t wxPyCBInputStream::GetSize() const {
1386     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1387     if (m_seek && m_tell) {
1388         off_t temp = self->OnSysTell();
1389         off_t ret = self->OnSysSeek(0, wxFromEnd);
1390         self->OnSysSeek(temp, wxFromStart);
1391         return ret;
1392     }
1393     else
1394         return 0;
1395 }
1396
1397
1398 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1399     if (bufsize == 0)
1400         return 0;
1401
1402     bool blocked = wxPyBeginBlockThreads();
1403     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1404     PyObject* result = PyEval_CallObject(m_read, arglist);
1405     Py_DECREF(arglist);
1406
1407     size_t o = 0;
1408     if ((result != NULL) && PyString_Check(result)) {
1409         o = PyString_Size(result);
1410         if (o == 0)
1411             m_lasterror = wxSTREAM_EOF;
1412         if (o > bufsize)
1413             o = bufsize;
1414         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1415         Py_DECREF(result);
1416
1417     }
1418     else
1419         m_lasterror = wxSTREAM_READ_ERROR;
1420     wxPyEndBlockThreads(blocked);
1421     return o;
1422 }
1423
1424 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1425     m_lasterror = wxSTREAM_WRITE_ERROR;
1426     return 0;
1427 }
1428
1429 off_t wxPyCBInputStream::OnSysSeek(off_t off, wxSeekMode mode) {
1430     bool blocked = wxPyBeginBlockThreads();
1431 #ifdef _LARGE_FILES
1432     // off_t is a 64-bit value...
1433     PyObject* arglist = Py_BuildValue("(Li)", off, mode);
1434 #else
1435     PyObject* arglist = Py_BuildValue("(ii)", off, mode);
1436 #endif
1437     PyObject* result = PyEval_CallObject(m_seek, arglist);
1438     Py_DECREF(arglist);
1439     Py_XDECREF(result);
1440     wxPyEndBlockThreads(blocked);
1441     return OnSysTell();
1442 }
1443
1444
1445 off_t wxPyCBInputStream::OnSysTell() const {
1446     bool blocked = wxPyBeginBlockThreads();
1447     PyObject* arglist = Py_BuildValue("()");
1448     PyObject* result = PyEval_CallObject(m_tell, arglist);
1449     Py_DECREF(arglist);
1450     off_t o = 0;
1451     if (result != NULL) {
1452 #ifdef _LARGE_FILES
1453         if (PyLong_Check(result))
1454             o = PyLong_AsLongLong(result);
1455         else
1456 #endif
1457             o = PyInt_AsLong(result);
1458         Py_DECREF(result);
1459     };
1460     wxPyEndBlockThreads(blocked);
1461     return o;
1462 }
1463
1464 //----------------------------------------------------------------------
1465
1466 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1467
1468 wxPyCallback::wxPyCallback(PyObject* func) {
1469     m_func = func;
1470     Py_INCREF(m_func);
1471 }
1472
1473 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1474     m_func = other.m_func;
1475     Py_INCREF(m_func);
1476 }
1477
1478 wxPyCallback::~wxPyCallback() {
1479     bool blocked = wxPyBeginBlockThreads();
1480     Py_DECREF(m_func);
1481     wxPyEndBlockThreads(blocked);
1482 }
1483
1484
1485 #define wxPy_PRECALLINIT     "_preCallInit"
1486 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1487
1488 // This function is used for all events destined for Python event handlers.
1489 void wxPyCallback::EventThunker(wxEvent& event) {
1490     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1491     PyObject*       func = cb->m_func;
1492     PyObject*       result;
1493     PyObject*       arg;
1494     PyObject*       tuple;
1495     bool            checkSkip = False;
1496
1497     bool blocked = wxPyBeginBlockThreads();
1498     wxString className = event.GetClassInfo()->GetClassName();
1499
1500     // If the event is one of these types then pass the original
1501     // event object instead of the one passed to us.
1502     if ( className == wxT("wxPyEvent") ) {
1503         arg =       ((wxPyEvent*)&event)->GetSelf();
1504         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1505     }
1506     else if ( className == wxT("wxPyCommandEvent") ) {
1507         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1508         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1509     }
1510     else {
1511         arg = wxPyConstructObject((void*)&event, className);
1512     }
1513
1514     if (!arg) {
1515         PyErr_Print();
1516     } else {
1517         // "intern" the pre/post method names to speed up the HasAttr
1518         static PyObject* s_preName  = NULL;
1519         static PyObject* s_postName = NULL;
1520         if (s_preName == NULL) {
1521             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1522             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1523         }
1524
1525         // Check if the event object needs some preinitialization
1526         if (PyObject_HasAttr(arg, s_preName)) {
1527             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1528             if ( result ) {
1529                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1530                 PyErr_Clear();       // Just in case...
1531             } else {
1532                 PyErr_Print();
1533             }
1534         }
1535
1536         // Call the event handler, passing the event object
1537         tuple = PyTuple_New(1);
1538         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1539         result = PyEval_CallObject(func, tuple);
1540         if ( result ) {
1541             Py_DECREF(result);   // result is ignored, but we still need to decref it
1542             PyErr_Clear();       // Just in case...
1543         } else {
1544             PyErr_Print();
1545         }
1546
1547         // Check if the event object needs some post cleanup
1548         if (PyObject_HasAttr(arg, s_postName)) {
1549             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1550             if ( result ) {
1551                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1552                 PyErr_Clear();       // Just in case...
1553             } else {
1554                 PyErr_Print();
1555             }
1556         }
1557
1558         if ( checkSkip ) {
1559             // if the event object was one of our special types and
1560             // it had been cloned, then we need to extract the Skipped
1561             // value from the original and set it in the clone.
1562             result = PyObject_CallMethod(arg, "GetSkipped", "");
1563             if ( result ) {
1564                 event.Skip(PyInt_AsLong(result));
1565                 Py_DECREF(result);
1566             } else {
1567                 PyErr_Print();
1568             }
1569         }
1570         Py_DECREF(tuple);
1571     }
1572     wxPyEndBlockThreads(blocked);
1573 }
1574
1575
1576 //----------------------------------------------------------------------
1577
1578 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1579       m_lastFound = NULL;
1580       m_self = other.m_self;
1581       m_class = other.m_class;
1582       if (m_self) {
1583           Py_INCREF(m_self);
1584           Py_INCREF(m_class);
1585       }
1586 }
1587
1588
1589 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1590     m_self = self;
1591     m_class = klass;
1592     m_incRef = incref;
1593     if (incref) {
1594         Py_INCREF(m_self);
1595         Py_INCREF(m_class);
1596     }
1597 }
1598
1599
1600 #if PYTHON_API_VERSION >= 1011
1601
1602 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1603 // in which the method was defined.  Starting with 2.2 it returns
1604 // "class that asked for the method" which seems totally bogus to me
1605 // but apprently it fixes some obscure problem waiting to happen in
1606 // Python.  Since the API was not documented Guido and the gang felt
1607 // safe in changing it.  Needless to say that totally screwed up the
1608 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1609 // code to find the class where the method is actually defined...
1610
1611 static
1612 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1613 {
1614     int i, n;
1615
1616     if (PyType_Check(klass)) {      // new style classes
1617         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1618         PyTypeObject* type = (PyTypeObject*)klass;
1619         PyObject *mro, *res, *base, *dict;
1620         /* Look in tp_dict of types in MRO */
1621         mro = type->tp_mro;
1622         assert(PyTuple_Check(mro));
1623         n = PyTuple_GET_SIZE(mro);
1624         for (i = 0; i < n; i++) {
1625             base = PyTuple_GET_ITEM(mro, i);
1626             if (PyClass_Check(base))
1627                 dict = ((PyClassObject *)base)->cl_dict;
1628             else {
1629                 assert(PyType_Check(base));
1630                 dict = ((PyTypeObject *)base)->tp_dict;
1631             }
1632             assert(dict && PyDict_Check(dict));
1633             res = PyDict_GetItem(dict, name);
1634             if (res != NULL)
1635                 return base;
1636         }
1637         return NULL;
1638     }
1639
1640     else if (PyClass_Check(klass)) { // old style classes
1641         // This code is borrowed/adapted from class_lookup in classobject.c
1642         PyClassObject* cp = (PyClassObject*)klass;
1643         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1644         if (value != NULL) {
1645             return (PyObject*)cp;
1646         }
1647         n = PyTuple_Size(cp->cl_bases);
1648         for (i = 0; i < n; i++) {
1649             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1650             PyObject *v = PyFindClassWithAttr(base, name);
1651             if (v != NULL)
1652                 return v;
1653         }
1654         return NULL;
1655     }
1656     return NULL;
1657 }
1658 #endif
1659
1660
1661 static
1662 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
1663 {
1664     PyObject* mgc = PyMethod_GET_CLASS(method);
1665
1666 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1667     return mgc;
1668 #else                             // 2.2 and after, the hard way...
1669
1670     PyObject* nameo = PyString_FromString(name);
1671     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
1672     Py_DECREF(nameo);
1673     return klass;
1674 #endif
1675 }
1676
1677
1678
1679 bool wxPyCallbackHelper::findCallback(const char* name) const {
1680     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1681     self->m_lastFound = NULL;
1682
1683     // If the object (m_self) has an attibute of the given name...
1684     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
1685         PyObject *method, *klass;
1686         method = PyObject_GetAttrString(m_self, (char*)name);
1687
1688         // ...and if that attribute is a method, and if that method's class is
1689         // not from a base class...
1690         if (PyMethod_Check(method) &&
1691             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
1692             ((klass == m_class) || PyObject_IsSubclass(klass, m_class))) {
1693
1694             // ...then we'll save a pointer to the method so callCallback can call it.
1695             self->m_lastFound = method;
1696         }
1697         else {
1698             Py_DECREF(method);
1699         }
1700     }
1701     return m_lastFound != NULL;
1702 }
1703
1704
1705 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1706     PyObject*   result;
1707     int         retval = False;
1708
1709     result = callCallbackObj(argTuple);
1710     if (result) {                       // Assumes an integer return type...
1711         retval = PyInt_AsLong(result);
1712         Py_DECREF(result);
1713         PyErr_Clear();                  // forget about it if it's not...
1714     }
1715     return retval;
1716 }
1717
1718 // Invoke the Python callable object, returning the raw PyObject return
1719 // value.  Caller should DECREF the return value and also manage the GIL.
1720 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1721     PyObject* result;
1722
1723     // Save a copy of the pointer in case the callback generates another
1724     // callback.  In that case m_lastFound will have a different value when
1725     // it gets back here...
1726     PyObject* method = m_lastFound;
1727
1728     result = PyEval_CallObject(method, argTuple);
1729     Py_DECREF(argTuple);
1730     Py_DECREF(method);
1731     if (!result) {
1732         PyErr_Print();
1733     }
1734     return result;
1735 }
1736
1737
1738 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1739     cbh.setSelf(self, klass, incref);
1740 }
1741
1742 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
1743     return cbh.findCallback(name);
1744 }
1745
1746 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1747     return cbh.callCallback(argTuple);
1748 }
1749
1750 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1751     return cbh.callCallbackObj(argTuple);
1752 }
1753
1754
1755 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1756     if (cbh->m_incRef) {
1757         bool blocked = wxPyBeginBlockThreads();
1758         Py_XDECREF(cbh->m_self);
1759         Py_XDECREF(cbh->m_class);
1760         wxPyEndBlockThreads(blocked);
1761     }
1762 }
1763
1764 //---------------------------------------------------------------------------
1765 //---------------------------------------------------------------------------
1766 // These event classes can be derived from in Python and passed through the event
1767 // system without losing anything.  They do this by keeping a reference to
1768 // themselves and some special case handling in wxPyCallback::EventThunker.
1769
1770
1771 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1772     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1773     //Py_INCREF(m_self);        //      circular loops...
1774     m_cloned = False;
1775 }
1776
1777 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1778     bool blocked = wxPyBeginBlockThreads();
1779     if (m_cloned)
1780         Py_DECREF(m_self);
1781     wxPyEndBlockThreads(blocked);
1782 }
1783
1784 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1785     bool blocked = wxPyBeginBlockThreads();
1786     if (m_cloned)
1787         Py_DECREF(m_self);
1788     m_self = self;
1789     if (clone) {
1790         Py_INCREF(m_self);
1791         m_cloned = True;
1792     }
1793     wxPyEndBlockThreads(blocked);
1794 }
1795
1796 PyObject* wxPyEvtSelfRef::GetSelf() const {
1797     Py_INCREF(m_self);
1798     return m_self;
1799 }
1800
1801
1802 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1803 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1804
1805
1806 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1807     : wxEvent(winid, commandType) {
1808 }
1809
1810
1811 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1812     : wxEvent(evt)
1813 {
1814     SetSelf(evt.m_self, True);
1815 }
1816
1817
1818 wxPyEvent::~wxPyEvent() {
1819 }
1820
1821
1822 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1823     : wxCommandEvent(commandType, id) {
1824 }
1825
1826
1827 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1828     : wxCommandEvent(evt)
1829 {
1830     SetSelf(evt.m_self, True);
1831 }
1832
1833
1834 wxPyCommandEvent::~wxPyCommandEvent() {
1835 }
1836
1837
1838
1839
1840
1841 //---------------------------------------------------------------------------
1842 //---------------------------------------------------------------------------
1843 // Convert a wxList to a Python List, only works for lists of wxObjects
1844
1845 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1846     wxList*     list = (wxList*)listbase;  // this is probably bad...
1847     PyObject*   pyList;
1848     PyObject*   pyObj;
1849     wxObject*   wxObj;
1850     wxNode*     node = list->GetFirst();
1851
1852     bool blocked = wxPyBeginBlockThreads();
1853     pyList = PyList_New(0);
1854     while (node) {
1855         wxObj = node->GetData();
1856         pyObj = wxPyMake_wxObject(wxObj,false);
1857         PyList_Append(pyList, pyObj);
1858         node = node->GetNext();
1859     }
1860     wxPyEndBlockThreads(blocked);
1861     return pyList;
1862 }
1863
1864 //----------------------------------------------------------------------
1865
1866 long wxPyGetWinHandle(wxWindow* win) {
1867
1868 #ifdef __WXMSW__
1869     return (long)win->GetHandle();
1870 #endif
1871
1872 #if defined(__WXGTK__) || defined(__WXX11)
1873     return (long)GetXWindow(win);
1874 #endif
1875
1876 #ifdef __WXMAC__
1877     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
1878     return (long)win->GetHandle();
1879 #endif
1880
1881     return 0;
1882 }
1883
1884 //----------------------------------------------------------------------
1885 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1886 // included in every file over and over again...
1887
1888 wxString* wxString_in_helper(PyObject* source) {
1889     wxString* target = NULL;
1890
1891     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1892         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
1893         return NULL;
1894     }
1895 #if wxUSE_UNICODE
1896     PyObject* uni = source;
1897     if (PyString_Check(source)) {
1898         uni = PyUnicode_FromObject(source);
1899         if (PyErr_Occurred()) return NULL;
1900     }
1901     target = new wxString();
1902     size_t len = PyUnicode_GET_SIZE(uni);
1903     if (len) {
1904         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target->GetWriteBuf(len), len);
1905         target->UngetWriteBuf(len);
1906     }
1907
1908     if (PyString_Check(source))
1909         Py_DECREF(uni);
1910 #else
1911     char* tmpPtr; int tmpSize;
1912     if (PyString_AsStringAndSize(source, &tmpPtr, &tmpSize) == -1) {
1913         PyErr_SetString(PyExc_TypeError, "Unable to convert string");
1914         return NULL;
1915     }
1916     target = new wxString(tmpPtr, tmpSize);
1917 #endif // wxUSE_UNICODE
1918
1919     return target;
1920 }
1921
1922
1923 // Similar to above except doesn't use "new" and doesn't set an exception
1924 wxString Py2wxString(PyObject* source)
1925 {
1926     wxString target;
1927
1928 #if wxUSE_UNICODE
1929     // Convert to a unicode object, if not already, then to a wxString
1930     PyObject* uni = source;
1931     if (!PyUnicode_Check(source)) {
1932         uni = PyUnicode_FromObject(source);
1933         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
1934     }
1935     size_t len = PyUnicode_GET_SIZE(uni);
1936     if (len) {
1937         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target.GetWriteBuf(len), len);
1938         target.UngetWriteBuf();
1939     }
1940
1941     if (!PyUnicode_Check(source))
1942         Py_DECREF(uni);
1943 #else
1944     // Convert to a string object if it isn't already, then to wxString
1945     PyObject* str = source;
1946     if (!PyString_Check(source)) {
1947         str = PyObject_Str(source);
1948         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1949     }
1950     char* tmpPtr; int tmpSize;
1951     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1952     target = wxString(tmpPtr, tmpSize);
1953
1954     if (!PyString_Check(source))
1955         Py_DECREF(str);
1956 #endif // wxUSE_UNICODE
1957
1958     return target;
1959 }
1960
1961
1962 // Make either a Python String or Unicode object, depending on build mode
1963 PyObject* wx2PyString(const wxString& src)
1964 {
1965     PyObject* str;
1966 #if wxUSE_UNICODE
1967     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
1968 #else
1969     str = PyString_FromStringAndSize(src.c_str(), src.Len());
1970 #endif
1971     return str;
1972 }
1973
1974
1975 //----------------------------------------------------------------------
1976
1977
1978 byte* byte_LIST_helper(PyObject* source) {
1979     if (!PyList_Check(source)) {
1980         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1981         return NULL;
1982     }
1983     int count = PyList_Size(source);
1984     byte* temp = new byte[count];
1985     if (! temp) {
1986         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1987         return NULL;
1988     }
1989     for (int x=0; x<count; x++) {
1990         PyObject* o = PyList_GetItem(source, x);
1991         if (! PyInt_Check(o)) {
1992             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1993             return NULL;
1994         }
1995         temp[x] = (byte)PyInt_AsLong(o);
1996     }
1997     return temp;
1998 }
1999
2000
2001 int* int_LIST_helper(PyObject* source) {
2002     if (!PyList_Check(source)) {
2003         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2004         return NULL;
2005     }
2006     int count = PyList_Size(source);
2007     int* temp = new int[count];
2008     if (! temp) {
2009         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2010         return NULL;
2011     }
2012     for (int x=0; x<count; x++) {
2013         PyObject* o = PyList_GetItem(source, x);
2014         if (! PyInt_Check(o)) {
2015             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2016             return NULL;
2017         }
2018         temp[x] = PyInt_AsLong(o);
2019     }
2020     return temp;
2021 }
2022
2023
2024 long* long_LIST_helper(PyObject* source) {
2025     if (!PyList_Check(source)) {
2026         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2027         return NULL;
2028     }
2029     int count = PyList_Size(source);
2030     long* temp = new long[count];
2031     if (! temp) {
2032         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2033         return NULL;
2034     }
2035     for (int x=0; x<count; x++) {
2036         PyObject* o = PyList_GetItem(source, x);
2037         if (! PyInt_Check(o)) {
2038             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2039             return NULL;
2040         }
2041         temp[x] = PyInt_AsLong(o);
2042     }
2043     return temp;
2044 }
2045
2046
2047 char** string_LIST_helper(PyObject* source) {
2048     if (!PyList_Check(source)) {
2049         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2050         return NULL;
2051     }
2052     int count = PyList_Size(source);
2053     char** temp = new char*[count];
2054     if (! temp) {
2055         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2056         return NULL;
2057     }
2058     for (int x=0; x<count; x++) {
2059         PyObject* o = PyList_GetItem(source, x);
2060         if (! PyString_Check(o)) {
2061             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2062             return NULL;
2063         }
2064         temp[x] = PyString_AsString(o);
2065     }
2066     return temp;
2067 }
2068
2069 //--------------------------------
2070 // Part of patch from Tim Hochberg
2071 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
2072     if (PyInt_Check(o1) && PyInt_Check(o2)) {
2073         point->x = PyInt_AS_LONG(o1);
2074         point->y = PyInt_AS_LONG(o2);
2075         return True;
2076     }
2077     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
2078         point->x = (int)PyFloat_AS_DOUBLE(o1);
2079         point->y = (int)PyFloat_AS_DOUBLE(o2);
2080         return True;
2081     }
2082     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {  // TODO: Why???
2083         // Disallow instances because they can cause havok
2084         return False;
2085     }
2086     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
2087         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
2088         point->x = PyInt_AsLong(o1);
2089         point->y = PyInt_AsLong(o2);
2090         return True;
2091     }
2092     return False;
2093 }
2094
2095
2096 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
2097     // Putting all of the declarations here allows
2098     // us to put the error handling all in one place.
2099     int x;
2100     wxPoint* temp;
2101     PyObject *o, *o1, *o2;
2102     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2103
2104     if (!PySequence_Check(source)) {
2105         goto error0;
2106     }
2107
2108     // The length of the sequence is returned in count.
2109     *count = PySequence_Length(source);
2110     if (*count < 0) {
2111         goto error0;
2112     }
2113
2114     temp = new wxPoint[*count];
2115     if (!temp) {
2116         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2117         return NULL;
2118     }
2119     for (x=0; x<*count; x++) {
2120         // Get an item: try fast way first.
2121         if (isFast) {
2122             o = PySequence_Fast_GET_ITEM(source, x);
2123         }
2124         else {
2125             o = PySequence_GetItem(source, x);
2126             if (o == NULL) {
2127                 goto error1;
2128             }
2129         }
2130
2131         // Convert o to wxPoint.
2132         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2133             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2134             o1 = PySequence_Fast_GET_ITEM(o, 0);
2135             o2 = PySequence_Fast_GET_ITEM(o, 1);
2136             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2137                 goto error2;
2138             }
2139         }
2140         else if (wxPySwigInstance_Check(o)) {
2141             wxPoint* pt;
2142             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2143                 goto error2;
2144             }
2145             temp[x] = *pt;
2146         }
2147         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2148             o1 = PySequence_GetItem(o, 0);
2149             o2 = PySequence_GetItem(o, 1);
2150             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2151                 goto error3;
2152             }
2153             Py_DECREF(o1);
2154             Py_DECREF(o2);
2155         }
2156         else {
2157             goto error2;
2158         }
2159         // Clean up.
2160         if (!isFast)
2161             Py_DECREF(o);
2162     }
2163     return temp;
2164
2165 error3:
2166     Py_DECREF(o1);
2167     Py_DECREF(o2);
2168 error2:
2169     if (!isFast)
2170         Py_DECREF(o);
2171 error1:
2172     delete [] temp;
2173 error0:
2174     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2175     return NULL;
2176 }
2177 // end of patch
2178 //------------------------------
2179
2180
2181 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2182     if (!PyList_Check(source)) {
2183         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2184         return NULL;
2185     }
2186     int count = PyList_Size(source);
2187     wxBitmap** temp = new wxBitmap*[count];
2188     if (! temp) {
2189         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2190         return NULL;
2191     }
2192     for (int x=0; x<count; x++) {
2193         PyObject* o = PyList_GetItem(source, x);
2194         if (wxPySwigInstance_Check(o)) {
2195             wxBitmap*    pt;
2196             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2197                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2198                 return NULL;
2199             }
2200             temp[x] = pt;
2201         }
2202         else {
2203             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2204             return NULL;
2205         }
2206     }
2207     return temp;
2208 }
2209
2210
2211
2212 wxString* wxString_LIST_helper(PyObject* source) {
2213     if (!PyList_Check(source)) {
2214         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2215         return NULL;
2216     }
2217     int count = PyList_Size(source);
2218     wxString* temp = new wxString[count];
2219     if (! temp) {
2220         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2221         return NULL;
2222     }
2223     for (int x=0; x<count; x++) {
2224         PyObject* o = PyList_GetItem(source, x);
2225 #if PYTHON_API_VERSION >= 1009
2226         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2227             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2228             return NULL;
2229         }
2230 #else
2231         if (! PyString_Check(o)) {
2232             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2233             return NULL;
2234         }
2235 #endif
2236
2237         wxString* pStr = wxString_in_helper(o);
2238         temp[x] = *pStr;
2239         delete pStr;
2240     }
2241     return temp;
2242 }
2243
2244
2245 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2246     if (!PyList_Check(source)) {
2247         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2248         return NULL;
2249     }
2250     int count                = PyList_Size(source);
2251     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2252     if (! temp) {
2253         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2254         return NULL;
2255     }
2256     for (int x=0; x<count; x++) {
2257         PyObject* o = PyList_GetItem(source, x);
2258         if (wxPySwigInstance_Check(o)) {
2259             wxAcceleratorEntry* ae;
2260             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2261                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2262                 return NULL;
2263             }
2264             temp[x] = *ae;
2265         }
2266         else if (PyTuple_Check(o)) {
2267             PyObject* o1 = PyTuple_GetItem(o, 0);
2268             PyObject* o2 = PyTuple_GetItem(o, 1);
2269             PyObject* o3 = PyTuple_GetItem(o, 2);
2270             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2271         }
2272         else {
2273             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2274             return NULL;
2275         }
2276     }
2277     return temp;
2278 }
2279
2280
2281 wxPen** wxPen_LIST_helper(PyObject* source) {
2282     if (!PyList_Check(source)) {
2283         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2284         return NULL;
2285     }
2286     int count = PyList_Size(source);
2287     wxPen** temp = new wxPen*[count];
2288     if (!temp) {
2289         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2290         return NULL;
2291     }
2292     for (int x=0; x<count; x++) {
2293         PyObject* o = PyList_GetItem(source, x);
2294         if (wxPySwigInstance_Check(o)) {
2295             wxPen*  pt;
2296             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2297                 delete temp;
2298                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2299                 return NULL;
2300             }
2301             temp[x] = pt;
2302         }
2303         else {
2304             delete temp;
2305             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2306             return NULL;
2307         }
2308     }
2309     return temp;
2310 }
2311
2312
2313 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2314     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2315     PyObject *o1, *o2;
2316
2317     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2318         return False;
2319
2320     if (isFast) {
2321         o1 = PySequence_Fast_GET_ITEM(source, 0);
2322         o2 = PySequence_Fast_GET_ITEM(source, 1);
2323     }
2324     else {
2325         o1 = PySequence_GetItem(source, 0);
2326         o2 = PySequence_GetItem(source, 1);
2327     }
2328
2329     *i1 = PyInt_AsLong(o1);
2330     *i2 = PyInt_AsLong(o2);
2331
2332     if (! isFast) {
2333         Py_DECREF(o1);
2334         Py_DECREF(o2);
2335     }
2336     return True;
2337 }
2338
2339
2340 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2341     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2342     PyObject *o1, *o2, *o3, *o4;
2343
2344     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2345         return False;
2346
2347     if (isFast) {
2348         o1 = PySequence_Fast_GET_ITEM(source, 0);
2349         o2 = PySequence_Fast_GET_ITEM(source, 1);
2350         o3 = PySequence_Fast_GET_ITEM(source, 2);
2351         o4 = PySequence_Fast_GET_ITEM(source, 3);
2352     }
2353     else {
2354         o1 = PySequence_GetItem(source, 0);
2355         o2 = PySequence_GetItem(source, 1);
2356         o3 = PySequence_GetItem(source, 2);
2357         o4 = PySequence_GetItem(source, 3);
2358     }
2359
2360     *i1 = PyInt_AsLong(o1);
2361     *i2 = PyInt_AsLong(o2);
2362     *i3 = PyInt_AsLong(o3);
2363     *i4 = PyInt_AsLong(o4);
2364
2365     if (! isFast) {
2366         Py_DECREF(o1);
2367         Py_DECREF(o2);
2368         Py_DECREF(o3);
2369         Py_DECREF(o4);
2370     }
2371     return True;
2372 }
2373
2374
2375 //----------------------------------------------------------------------
2376
2377 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2378 {
2379     void* ptr;
2380
2381     if (wxPySwigInstance_Check(source) &&
2382         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2383         return True;
2384
2385     PyErr_Clear();
2386     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2387         return True;
2388
2389     return False;
2390 }
2391
2392 bool wxSize_helper(PyObject* source, wxSize** obj)
2393 {
2394     if (source == Py_None) {
2395         **obj = wxSize(-1,-1);
2396         return True;
2397     }
2398     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2399 }
2400
2401
2402 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2403 {
2404     if (source == Py_None) {
2405         **obj = wxPoint(-1,-1);
2406         return True;
2407     }
2408     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2409 }
2410
2411
2412
2413 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2414
2415     if (source == Py_None) {
2416         **obj = wxRealPoint(-1,-1);
2417         return True;
2418     }
2419
2420     // If source is an object instance then it may already be the right type
2421     if (wxPySwigInstance_Check(source)) {
2422         wxRealPoint* ptr;
2423         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2424             goto error;
2425         *obj = ptr;
2426         return True;
2427     }
2428     // otherwise a 2-tuple of floats is expected
2429     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2430         PyObject* o1 = PySequence_GetItem(source, 0);
2431         PyObject* o2 = PySequence_GetItem(source, 1);
2432         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2433             Py_DECREF(o1);
2434             Py_DECREF(o2);
2435             goto error;
2436         }
2437         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2438         Py_DECREF(o1);
2439         Py_DECREF(o2);
2440         return True;
2441     }
2442
2443  error:
2444     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2445     return False;
2446 }
2447
2448
2449
2450 bool wxRect_helper(PyObject* source, wxRect** obj) {
2451
2452     if (source == Py_None) {
2453         **obj = wxRect(-1,-1,-1,-1);
2454         return True;
2455     }
2456
2457     // If source is an object instance then it may already be the right type
2458     if (wxPySwigInstance_Check(source)) {
2459         wxRect* ptr;
2460         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2461             goto error;
2462         *obj = ptr;
2463         return True;
2464     }
2465     // otherwise a 4-tuple of integers is expected
2466     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2467         PyObject* o1 = PySequence_GetItem(source, 0);
2468         PyObject* o2 = PySequence_GetItem(source, 1);
2469         PyObject* o3 = PySequence_GetItem(source, 2);
2470         PyObject* o4 = PySequence_GetItem(source, 3);
2471         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2472             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2473             Py_DECREF(o1);
2474             Py_DECREF(o2);
2475             Py_DECREF(o3);
2476             Py_DECREF(o4);
2477             goto error;
2478         }
2479         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2480                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2481         Py_DECREF(o1);
2482         Py_DECREF(o2);
2483         Py_DECREF(o3);
2484         Py_DECREF(o4);
2485         return True;
2486     }
2487
2488  error:
2489     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2490     return False;
2491 }
2492
2493
2494
2495 bool wxColour_helper(PyObject* source, wxColour** obj) {
2496
2497     if (source == Py_None) {
2498         **obj = wxNullColour;
2499         return True;
2500     }
2501
2502     // If source is an object instance then it may already be the right type
2503     if (wxPySwigInstance_Check(source)) {
2504         wxColour* ptr;
2505         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2506             goto error;
2507         *obj = ptr;
2508         return True;
2509     }
2510     // otherwise check for a string
2511     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2512         wxString spec = Py2wxString(source);
2513         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2514             long red, green, blue;
2515             red = green = blue = 0;
2516             spec.Mid(1,2).ToLong(&red,   16);
2517             spec.Mid(3,2).ToLong(&green, 16);
2518             spec.Mid(5,2).ToLong(&blue,  16);
2519
2520             **obj = wxColour(red, green, blue);
2521             return True;
2522         }
2523         else {                                       // it's a colour name
2524             **obj = wxColour(spec);
2525             return True;
2526         }
2527     }
2528     // last chance: 3-tuple of integers is expected
2529     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2530         PyObject* o1 = PySequence_GetItem(source, 0);
2531         PyObject* o2 = PySequence_GetItem(source, 1);
2532         PyObject* o3 = PySequence_GetItem(source, 2);
2533         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2534             Py_DECREF(o1);
2535             Py_DECREF(o2);
2536             Py_DECREF(o3);
2537             goto error;
2538         }
2539         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2540         Py_DECREF(o1);
2541         Py_DECREF(o2);
2542         Py_DECREF(o3);
2543         return True;
2544     }
2545
2546  error:
2547     PyErr_SetString(PyExc_TypeError,
2548                     "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
2549     return False;
2550 }
2551
2552
2553 bool wxColour_typecheck(PyObject* source) {
2554
2555     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2556         return True;
2557
2558     if (PyString_Check(source) || PyUnicode_Check(source))
2559         return True;
2560
2561     return False;
2562 }
2563
2564
2565
2566 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2567
2568     if (source == Py_None) {
2569         **obj = wxPoint2D(-1,-1);
2570         return True;
2571     }
2572
2573     // If source is an object instance then it may already be the right type
2574     if (wxPySwigInstance_Check(source)) {
2575         wxPoint2D* ptr;
2576         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2577             goto error;
2578         *obj = ptr;
2579         return True;
2580     }
2581     // otherwise a length-2 sequence of floats is expected
2582     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2583         PyObject* o1 = PySequence_GetItem(source, 0);
2584         PyObject* o2 = PySequence_GetItem(source, 1);
2585         // This should really check for floats, not numbers -- but that would break code.
2586         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2587             Py_DECREF(o1);
2588             Py_DECREF(o2);
2589             goto error;
2590         }
2591         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2592         Py_DECREF(o1);
2593         Py_DECREF(o2);
2594         return True;
2595     }
2596  error:
2597     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2D object.");
2598     return False;
2599 }
2600
2601
2602 //----------------------------------------------------------------------
2603
2604 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
2605
2606     PyObject* list = PyList_New(0);
2607     for (size_t i=0; i < arr.GetCount(); i++) {
2608 #if wxUSE_UNICODE
2609         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2610 #else
2611         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2612 #endif
2613         PyList_Append(list, str);
2614         Py_DECREF(str);
2615     }
2616     return list;
2617 }
2618
2619
2620 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2621
2622     PyObject* list = PyList_New(0);
2623     for (size_t i=0; i < arr.GetCount(); i++) {
2624         PyObject* number = PyInt_FromLong(arr[i]);
2625         PyList_Append(list, number);
2626         Py_DECREF(number);
2627     }
2628     return list;
2629 }
2630
2631
2632 //----------------------------------------------------------------------
2633 //----------------------------------------------------------------------
2634
2635
2636
2637