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) (wxwin)->m_wxwindow ? \
  32                               GDK_WINDOW_XWINDOW(GTK_PIZZA((wxwin)->m_wxwindow)->bin_window) : \
  33                               GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
  34 #include <locale.h>
  35 #endif
  36
  37 #ifdef __WXX11__
  38 #include "wx/x11/privx.h"
  39 #define GetXWindow(wxwin)   ((Window)(wxwin)->GetHandle())
  40 #endif
  41
  42 #ifdef __WXMAC__
  43 #include <wx/mac/private.h>
  44 #endif
  45
  46 #include <wx/clipbrd.h>
  47 #include <wx/mimetype.h>
  48 #include <wx/image.h>
  49
  50 //----------------------------------------------------------------------
  51
  52 #if PYTHON_API_VERSION < 1009 && wxUSE_UNICODE
  53 #error Python must support Unicode to use wxWindows Unicode
  54 #endif
  55
  56 //----------------------------------------------------------------------
  57
  58 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  59 bool wxPyDoCleanup = false;
  60 bool wxPyDoingCleanup = false;
  61
  62
  63 #ifdef WXP_WITH_THREAD
  64 #if !wxPyUSE_GIL_STATE
  65 struct wxPyThreadState {
  66     unsigned long  tid;
  67     PyThreadState* tstate;
  68
  69     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  70         : tid(_tid), tstate(_tstate) {}
  71 };
  72
  73 #include <wx/dynarray.h>
  74 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  75 #include <wx/arrimpl.cpp>
  76 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  77
  78 wxPyThreadStateArray* wxPyTStates = NULL;
  79 wxMutex*              wxPyTMutex = NULL;
  80
  81 #endif
  82 #endif
  83
  84
  85 #define DEFAULTENCODING_SIZE 64
  86 static char wxPyDefaultEncoding[DEFAULTENCODING_SIZE] = "ascii";
  87
  88 static PyObject* wxPython_dict = NULL;
  89 static PyObject* wxPyAssertionError = NULL;
  90 static PyObject* wxPyNoAppError = NULL;
  91
  92 PyObject* wxPyPtrTypeMap = NULL;
  93
  94
  95 #ifdef __WXMSW__             // If building for win32...
  96 //----------------------------------------------------------------------
  97 // This gets run when the DLL is loaded.  We just need to save a handle.
  98 //----------------------------------------------------------------------
  99
 100 extern "C"
 101 BOOL WINAPI DllMain(
 102     HINSTANCE   hinstDLL,    // handle to DLL module
 103     DWORD       fdwReason,   // reason for calling function
 104     LPVOID      lpvReserved  // reserved
 105    )
 106 {
 107     // If wxPython is embedded in another wxWidgets app then
 108     // the instance has already been set.
 109     if (! wxGetInstance())
 110         wxSetInstance(hinstDLL);
 111     return true;
 112 }
 113 #endif
 114
 115 //----------------------------------------------------------------------
 116 // Classes for implementing the wxp main application shell.
 117 //----------------------------------------------------------------------
 118
 119 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 120
 121
 122 wxPyApp::wxPyApp() {
 123     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 124     m_startupComplete = false;
 125 }
 126
 127
 128 wxPyApp::~wxPyApp() {
 129     wxPythonApp = NULL;
 130     wxApp::SetInstance(NULL);
 131 }
 132
 133
 134 // This one isn't acutally called...  We fake it with _BootstrapApp
 135 bool wxPyApp::OnInit() {
 136     return false;
 137 }
 138
 139
 140 int  wxPyApp::MainLoop() {
 141     int retval = 0;
 142
 143     DeletePendingObjects();
 144     bool initialized = wxTopLevelWindows.GetCount() != 0;
 145     if (initialized) {
 146         if ( m_exitOnFrameDelete == Later ) {
 147             m_exitOnFrameDelete = Yes;
 148         }
 149
 150         retval = wxApp::MainLoop();
 151         OnExit();
 152     }
 153     return retval;
 154 }
 155
 156
 157 bool wxPyApp::OnInitGui() {
 158     bool rval=true;
 159     wxApp::OnInitGui();  // in this case always call the base class version
 160     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 161     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 162         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 163     wxPyEndBlockThreads(blocked);
 164     return rval;
 165 }
 166
 167
 168 int wxPyApp::OnExit() {
 169     int rval=0;
 170     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 171     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 172         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 173     wxPyEndBlockThreads(blocked);
 174     wxApp::OnExit();  // in this case always call the base class version
 175     return rval;
 176 }
 177
 178
 179 #ifdef __WXDEBUG__
 180 void wxPyApp::OnAssert(const wxChar *file,
 181                      int line,
 182                      const wxChar *cond,
 183                      const wxChar *msg) {
 184
 185     // if we're not fully initialized then just log the error
 186     if (! m_startupComplete) {
 187         wxString buf;
 188         buf.Alloc(4096);
 189         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 190                    file, line, cond);
 191         if (msg != NULL) {
 192             buf += wxT(": ");
 193             buf += msg;
 194         }
 195         wxLogDebug(buf);
 196         return;
 197     }
 198
 199     // If the OnAssert is overloaded in the Python class then call it...
 200     bool found;
 201     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 202     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 203         PyObject* fso = wx2PyString(file);
 204         PyObject* cso = wx2PyString(file);
 205         PyObject* mso;
 206         if (msg != NULL)
 207             mso = wx2PyString(file);
 208         else {
 209             mso = Py_None; Py_INCREF(Py_None);
 210         }
 211         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 212         Py_DECREF(fso);
 213         Py_DECREF(cso);
 214         Py_DECREF(mso);
 215     }
 216     wxPyEndBlockThreads(blocked);
 217
 218     // ...otherwise do our own thing with it
 219     if (! found) {
 220         // ignore it?
 221         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 222             return;
 223
 224         // turn it into a Python exception?
 225         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 226             wxString buf;
 227             buf.Alloc(4096);
 228             buf.Printf(wxT("C++ assertion \"%s\" failed in %s(%d)"), cond, file, line);
 229             if (msg != NULL) {
 230                 buf += wxT(": ");
 231                 buf += msg;
 232             }
 233
 234             // set the exception
 235             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 236             PyObject* s = wx2PyString(buf);
 237             PyErr_SetObject(wxPyAssertionError, s);
 238             Py_DECREF(s);
 239             wxPyEndBlockThreads(blocked);
 240
 241             // Now when control returns to whatever API wrapper was called from
 242             // Python it should detect that an exception is set and will return
 243             // NULL, signalling the exception to Python.
 244         }
 245
 246         // Send it to the normal log destination, but only if
 247         // not _DIALOG because it will call this too
 248         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 249             wxString buf;
 250             buf.Alloc(4096);
 251             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 252                        file, line, cond);
 253             if (msg != NULL) {
 254                 buf += wxT(": ");
 255                 buf += msg;
 256             }
 257             wxLogDebug(buf);
 258         }
 259
 260         // do the normal wx assert dialog?
 261         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 262             wxApp::OnAssert(file, line, cond, msg);
 263     }
 264 }
 265 #endif
 266
 267     // For catching Apple Events
 268 void wxPyApp::MacOpenFile(const wxString &fileName)
 269 {
 270     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 271     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 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::MacPrintFile(const wxString &fileName)
 280 {
 281     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 282     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 283         PyObject* s = wx2PyString(fileName);
 284         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 285         Py_DECREF(s);
 286     }
 287     wxPyEndBlockThreads(blocked);
 288 }
 289
 290 void wxPyApp::MacNewFile()
 291 {
 292     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 293     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 294         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 295     wxPyEndBlockThreads(blocked);
 296 }
 297
 298 void wxPyApp::MacReopenApp()
 299 {
 300     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 301     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 302         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 303     wxPyEndBlockThreads(blocked);
 304 }
 305
 306
 307 /*static*/
 308 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 309 #ifdef __WXMAC__
 310     return s_macSupportPCMenuShortcuts;
 311 #else
 312     return 0;
 313 #endif
 314 }
 315
 316 /*static*/
 317 long wxPyApp::GetMacAboutMenuItemId() {
 318 #ifdef __WXMAC__
 319     return s_macAboutMenuItemId;
 320 #else
 321     return 0;
 322 #endif
 323 }
 324
 325 /*static*/
 326 long wxPyApp::GetMacPreferencesMenuItemId() {
 327 #ifdef __WXMAC__
 328     return s_macPreferencesMenuItemId;
 329 #else
 330     return 0;
 331 #endif
 332 }
 333
 334 /*static*/
 335 long wxPyApp::GetMacExitMenuItemId() {
 336 #ifdef __WXMAC__
 337     return s_macExitMenuItemId;
 338 #else
 339     return 0;
 340 #endif
 341 }
 342
 343 /*static*/
 344 wxString wxPyApp::GetMacHelpMenuTitleName() {
 345 #ifdef __WXMAC__
 346     return s_macHelpMenuTitleName;
 347 #else
 348     return wxEmptyString;
 349 #endif
 350 }
 351
 352 /*static*/
 353 void wxPyApp::SetMacSupportPCMenuShortcuts(bool val) {
 354 #ifdef __WXMAC__
 355     s_macSupportPCMenuShortcuts = val;
 356 #endif
 357 }
 358
 359 /*static*/
 360 void wxPyApp::SetMacAboutMenuItemId(long val) {
 361 #ifdef __WXMAC__
 362     s_macAboutMenuItemId = val;
 363 #endif
 364 }
 365
 366 /*static*/
 367 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 368 #ifdef __WXMAC__
 369     s_macPreferencesMenuItemId = val;
 370 #endif
 371 }
 372
 373 /*static*/
 374 void wxPyApp::SetMacExitMenuItemId(long val) {
 375 #ifdef __WXMAC__
 376     s_macExitMenuItemId = val;
 377 #endif
 378 }
 379
 380 /*static*/
 381 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 382 #ifdef __WXMAC__
 383     s_macHelpMenuTitleName = val;
 384 #endif
 385 }
 386
 387
 388 // This finishes the initialization of wxWindows and then calls the OnInit
 389 // that should be present in the derived (Python) class.
 390 void wxPyApp::_BootstrapApp()
 391 {
 392     static      bool haveInitialized = false;
 393     bool        result;
 394     wxPyBlock_t     blocked;
 395     PyObject*   retval = NULL;
 396     PyObject*   pyint  = NULL;
 397
 398
 399     // Only initialize wxWidgets once
 400     if (! haveInitialized) {
 401
 402         // Get any command-line args passed to this program from the sys module
 403         int    argc = 0;
 404         char** argv = NULL;
 405         blocked = wxPyBeginBlockThreads();
 406
 407         PyObject* sysargv = PySys_GetObject("argv");
 408         PyObject* executable = PySys_GetObject("executable");
 409
 410         if (sysargv != NULL && executable != NULL) {
 411             argc = PyList_Size(sysargv) + 1;
 412             argv = new char*[argc+1];
 413             argv[0] = strdup(PyString_AsString(executable));
 414             int x;
 415             for(x=1; x<argc; x++) {
 416                 PyObject *pyArg = PyList_GetItem(sysargv, x-1);
 417                 argv[x] = strdup(PyString_AsString(pyArg));
 418             }
 419             argv[argc] = NULL;
 420         }
 421         wxPyEndBlockThreads(blocked);
 422
 423         // Initialize wxWidgets
 424         result = wxEntryStart(argc, argv);
 425         // wxApp takes ownership of the argv array, don't delete it here
 426
 427         blocked = wxPyBeginBlockThreads();
 428         if (! result)  {
 429             PyErr_SetString(PyExc_SystemError,
 430                             "wxEntryStart failed, unable to initialize wxWidgets!"
 431 #ifdef __WXGTK__
 432                             "  (Is DISPLAY set properly?)"
 433 #endif
 434                 );
 435             goto error;
 436         }
 437
 438         // On wxGTK the locale will be changed to match the system settings,
 439         // but Python before 2.4 needs to have LC_NUMERIC set to "C" in order
 440         // for the floating point conversions and such to work right.
 441 #if defined(__WXGTK__) && PY_VERSION_HEX < 0x02040000
 442         setlocale(LC_NUMERIC, "C");
 443 #endif
 444
 445         wxSystemOptions::SetOption(wxT("mac.textcontrol-use-mlte"), 1);
 446
 447         // The stock objects were all NULL when they were loaded into
 448         // SWIG generated proxies, so re-init those now...
 449         wxPy_ReinitStockObjects(3);
 450
 451         wxPyEndBlockThreads(blocked);
 452         haveInitialized = true;
 453     }
 454
 455     // It's now ok to generate exceptions for assertion errors.
 456     wxPythonApp->SetStartupComplete(true);
 457
 458     // Call the Python wxApp's OnInit function
 459     blocked = wxPyBeginBlockThreads();
 460     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 461
 462         PyObject* method = m_myInst.GetLastFound();
 463         PyObject* argTuple = PyTuple_New(0);
 464         retval = PyEval_CallObject(method, argTuple);
 465         Py_DECREF(argTuple);
 466         Py_DECREF(method);
 467         if (retval == NULL)
 468             goto error;
 469
 470         pyint = PyNumber_Int(retval);
 471         if (! pyint) {
 472             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 473             goto error;
 474         }
 475         result = PyInt_AS_LONG(pyint);
 476     }
 477     else {
 478         // Is it okay if there is no OnInit?  Probably so...
 479         result = true;
 480     }
 481
 482     if (! result) {
 483         PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
 484     }
 485
 486  error:
 487     Py_XDECREF(retval);
 488     Py_XDECREF(pyint);
 489
 490     wxPyEndBlockThreads(blocked);
 491 };
 492
 493 //---------------------------------------------------------------------
 494 //----------------------------------------------------------------------
 495
 496
 497 #if 0
 498 static char* wxPyCopyCString(const wxChar* src)
 499 {
 500     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 501     size_t len = strlen(buff);
 502     char*  dest = new char[len+1];
 503     strcpy(dest, buff);
 504     return dest;
 505 }
 506
 507 #if wxUSE_UNICODE
 508 static char* wxPyCopyCString(const char* src)   // we need a char version too
 509 {
 510     size_t len = strlen(src);
 511     char*  dest = new char[len+1];
 512     strcpy(dest, src);
 513     return dest;
 514 }
 515 #endif
 516
 517 static wxChar* wxPyCopyWString(const char *src)
 518 {
 519     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 520     wxString str(src, *wxConvCurrent);
 521     return copystring(str);
 522 }
 523
 524 #if wxUSE_UNICODE
 525 static wxChar* wxPyCopyWString(const wxChar *src)
 526 {
 527     return copystring(src);
 528 }
 529 #endif
 530 #endif
 531
 532
 533 inline const char* dropwx(const char* name) {
 534     if (name[0] == 'w' && name[1] == 'x')
 535         return name+2;
 536     else
 537         return name;
 538 }
 539
 540 //----------------------------------------------------------------------
 541
 542 // This function is called when the wx._core_ module is imported to do some
 543 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 544 // wxPyApp::_BootstrapApp
 545 void __wxPyPreStart(PyObject* moduleDict)
 546 {
 547
 548 #ifdef __WXMSW__
 549 //     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF
 550 //                     | _CRTDBG_CHECK_ALWAYS_DF
 551 //                     | _CRTDBG_DELAY_FREE_MEM_DF
 552 //         );
 553 #endif
 554
 555 #ifdef WXP_WITH_THREAD
 556 #if wxPyUSE_GIL_STATE
 557     PyEval_InitThreads();
 558 #else
 559     PyEval_InitThreads();
 560     wxPyTStates = new wxPyThreadStateArray;
 561     wxPyTMutex = new wxMutex;
 562
 563     // Save the current (main) thread state in our array
 564     PyThreadState* tstate = wxPyBeginAllowThreads();
 565     wxPyEndAllowThreads(tstate);
 566 #endif
 567 #endif
 568
 569     // Ensure that the build options in the DLL (or whatever) match this build
 570     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 571
 572     // Init the stock objects to a non-NULL value so SWIG doesn't create them as None
 573     wxPy_ReinitStockObjects(1);
 574
 575     wxInitAllImageHandlers();
 576 }
 577
 578
 579
 580 void __wxPyCleanup() {
 581     wxPyDoingCleanup = true;
 582     if (wxPyDoCleanup) {
 583         wxPyDoCleanup = false;
 584         wxEntryCleanup();
 585     }
 586 #ifdef WXP_WITH_THREAD
 587 #if !wxPyUSE_GIL_STATE
 588     delete wxPyTMutex;
 589     wxPyTMutex = NULL;
 590     wxPyTStates->Empty();
 591     delete wxPyTStates;
 592     wxPyTStates = NULL;
 593 #endif
 594 #endif
 595 }
 596
 597
 598 // Save a reference to the dictionary of the wx._core module, and inject
 599 // a few more things into it.
 600 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 601 {
 602
 603     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 604         return NULL;
 605
 606     if (!PyDict_Check(wxPython_dict)) {
 607         PyErr_SetString(PyExc_TypeError,
 608                         "_wxPySetDictionary must have dictionary object!");
 609         return NULL;
 610     }
 611
 612     if (! wxPyPtrTypeMap)
 613         wxPyPtrTypeMap = PyDict_New();
 614     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 615
 616     // Create an exception object to use for wxASSERTions
 617     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 618                                             PyExc_AssertionError, NULL);
 619     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 620
 621     // Create an exception object to use when the app object hasn't been created yet
 622     wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
 623                                         PyExc_RuntimeError, NULL);
 624     PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
 625
 626
 627
 628 #ifdef __WXMOTIF__
 629 #define wxPlatform "__WXMOTIF__"
 630 #define wxPlatName "wxMotif"
 631 #endif
 632 #ifdef __WXX11__
 633 #define wxPlatform "__WXX11__"
 634 #define wxPlatName "wxX11"
 635 #endif
 636 #ifdef __WXGTK__
 637 #define wxPlatform "__WXGTK__"
 638 #define wxPlatName "wxGTK"
 639 #endif
 640 #ifdef __WXMSW__
 641 #define wxPlatform "__WXMSW__"
 642 #define wxPlatName "wxMSW"
 643 #endif
 644 #ifdef __WXMAC__
 645 #define wxPlatform "__WXMAC__"
 646 #define wxPlatName "wxMac"
 647 #endif
 648
 649 #ifdef __WXDEBUG__
 650     int wxdebug = 1;
 651 #else
 652     int wxdebug = 0;
 653 #endif
 654
 655     // These should be deprecated in favor of the PlatformInfo tuple built below...
 656     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 657     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 658     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 659
 660     // Make a tuple of strings that gives more info about the platform.
 661     PyObject* PlatInfo = PyList_New(0);
 662     PyObject* obj;
 663
 664 #define _AddInfoString(st) \
 665     obj = PyString_FromString(st); \
 666     PyList_Append(PlatInfo, obj); \
 667     Py_DECREF(obj)
 668
 669     _AddInfoString(wxPlatform);
 670     _AddInfoString(wxPlatName);
 671 #if wxUSE_UNICODE
 672     _AddInfoString("unicode");
 673 #else
 674     _AddInfoString("ansi");
 675 #endif
 676 #ifdef __WXGTK__
 677 #ifdef __WXGTK20__
 678     _AddInfoString("gtk2");
 679 #else
 680     _AddInfoString("gtk1");
 681 #endif
 682 #endif
 683 #ifdef __WXDEBUG__
 684     _AddInfoString("wx-assertions-on");
 685 #else
 686     _AddInfoString("wx-assertions-off");
 687 #endif
 688
 689 #undef _AddInfoString
 690
 691     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 692     Py_DECREF(PlatInfo);
 693     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 694
 695     RETURN_NONE();
 696 }
 697
 698
 699 //---------------------------------------------------------------------------
 700
 701 // Python's PyInstance_Check does not return True for instances of new-style
 702 // classes.  This should get close enough for both new and old classes but I
 703 // should re-evaluate the need for doing instance checks...
 704 bool wxPyInstance_Check(PyObject* obj) {
 705     return PyObject_HasAttrString(obj, "__class__") != 0;
 706 }
 707
 708
 709 // This one checks if the object is an instance of a SWIG proxy class (it has
 710 // a .this attribute)
 711 bool wxPySwigInstance_Check(PyObject* obj) {
 712     return PyObject_HasAttrString(obj, "this") != 0;
 713 }
 714
 715 //---------------------------------------------------------------------------
 716
 717 // The stock objects are no longer created when the wx._core_ module is
 718 // imported, but only after the app object has been created.  The
 719 // wxPy_ReinitStockObjects function will be called 3 times to pass the stock
 720 // objects though various stages of evolution:
 721 //
 722 //   pass 1: Set all the pointers to a non-NULL value so the Python proxy
 723 //           object will be created (otherwise SWIG will just use None.)
 724 //
 725 //   pass 2: After the module has been imported and the python proxys have
 726 //           been created, then set the __class__ to be _wxPyUnbornObject so
 727 //           it will catch any access to the object and will raise an exception.
 728 //
 729 //   pass 3: Finally, from BootstrapApp patch things up so the stock objects
 730 //           can be used.
 731
 732
 733 PyObject* __wxPyFixStockObjects(PyObject* /* self */, PyObject* args)
 734 {
 735     wxPy_ReinitStockObjects(2);
 736     RETURN_NONE();
 737 }
 738
 739
 740 static void rsoPass2(const char* name)
 741 {
 742     static PyObject* unbornObjectClass = NULL;
 743     PyObject* obj;
 744
 745     if (unbornObjectClass == NULL) {
 746         unbornObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyUnbornObject");
 747         Py_INCREF(unbornObjectClass);
 748     }
 749
 750     // Find the object instance
 751     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 752     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 753     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 754
 755     // Change its class
 756     PyObject_SetAttrString(obj, "__class__",  unbornObjectClass);
 757
 758 }
 759
 760 static void rsoPass3(const char* name, const char* classname, void* ptr)
 761 {
 762     PyObject* obj;
 763     PyObject* classobj;
 764     PyObject* ptrobj;
 765
 766     // Find the object instance
 767     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 768     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 769     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 770
 771     // Find the class object and put it back in the instance
 772     classobj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(classname));
 773     wxCHECK_RET(classobj != NULL, wxT("Unable to find stock class object"));
 774     PyObject_SetAttrString(obj, "__class__",  classobj);
 775
 776     // Rebuild the .this swigified pointer with the new value of the C++ pointer
 777     ptrobj = wxPyMakeSwigPtr(ptr, wxString(classname, *wxConvCurrent));
 778     PyObject_SetAttrString(obj, "this", ptrobj);
 779     Py_DECREF(ptrobj);
 780 }
 781
 782
 783
 784 void wxPy_ReinitStockObjects(int pass)
 785 {
 786
 787     // If there is already an App object then wxPython is probably embedded in
 788     // a wx C++ application, so there is no need to do all this.
 789     static bool embedded = false;
 790     if ((pass == 1 || pass == 2) && wxTheApp) {
 791         embedded = true;
 792         return;
 793     }
 794     if (pass == 3 && embedded)
 795         return;
 796
 797
 798 #define REINITOBJ(name, classname) \
 799     if (pass == 1) { name = (classname*)0xC0C0C0C0; } \
 800     else if (pass == 2) { rsoPass2(#name); } \
 801     else if (pass == 3) { rsoPass3(#name, #classname, (void*)name); }
 802
 803
 804 #define REINITOBJ2(name, classname) \
 805     if (pass == 1) { } \
 806     else if (pass == 2) { rsoPass2(#name); } \
 807     else if (pass == 3) { rsoPass3(#name, #classname, (void*)&name); }
 808
 809
 810     REINITOBJ(wxNORMAL_FONT, wxFont);
 811     REINITOBJ(wxSMALL_FONT, wxFont);
 812     REINITOBJ(wxITALIC_FONT, wxFont);
 813     REINITOBJ(wxSWISS_FONT, wxFont);
 814
 815     REINITOBJ(wxRED_PEN, wxPen);
 816     REINITOBJ(wxCYAN_PEN, wxPen);
 817     REINITOBJ(wxGREEN_PEN, wxPen);
 818     REINITOBJ(wxBLACK_PEN, wxPen);
 819     REINITOBJ(wxWHITE_PEN, wxPen);
 820     REINITOBJ(wxTRANSPARENT_PEN, wxPen);
 821     REINITOBJ(wxBLACK_DASHED_PEN, wxPen);
 822     REINITOBJ(wxGREY_PEN, wxPen);
 823     REINITOBJ(wxMEDIUM_GREY_PEN, wxPen);
 824     REINITOBJ(wxLIGHT_GREY_PEN, wxPen);
 825
 826     REINITOBJ(wxBLUE_BRUSH, wxBrush);
 827     REINITOBJ(wxGREEN_BRUSH, wxBrush);
 828     REINITOBJ(wxWHITE_BRUSH, wxBrush);
 829     REINITOBJ(wxBLACK_BRUSH, wxBrush);
 830     REINITOBJ(wxTRANSPARENT_BRUSH, wxBrush);
 831     REINITOBJ(wxCYAN_BRUSH, wxBrush);
 832     REINITOBJ(wxRED_BRUSH, wxBrush);
 833     REINITOBJ(wxGREY_BRUSH, wxBrush);
 834     REINITOBJ(wxMEDIUM_GREY_BRUSH, wxBrush);
 835     REINITOBJ(wxLIGHT_GREY_BRUSH, wxBrush);
 836
 837     REINITOBJ(wxBLACK, wxColour);
 838     REINITOBJ(wxWHITE, wxColour);
 839     REINITOBJ(wxRED, wxColour);
 840     REINITOBJ(wxBLUE, wxColour);
 841     REINITOBJ(wxGREEN, wxColour);
 842     REINITOBJ(wxCYAN, wxColour);
 843     REINITOBJ(wxLIGHT_GREY, wxColour);
 844
 845     REINITOBJ(wxSTANDARD_CURSOR, wxCursor);
 846     REINITOBJ(wxHOURGLASS_CURSOR, wxCursor);
 847     REINITOBJ(wxCROSS_CURSOR, wxCursor);
 848
 849     REINITOBJ2(wxNullBitmap, wxBitmap);
 850     REINITOBJ2(wxNullIcon, wxIcon);
 851     REINITOBJ2(wxNullCursor, wxCursor);
 852     REINITOBJ2(wxNullPen, wxPen);
 853     REINITOBJ2(wxNullBrush, wxBrush);
 854     REINITOBJ2(wxNullPalette, wxPalette);
 855     REINITOBJ2(wxNullFont, wxFont);
 856     REINITOBJ2(wxNullColour, wxColour);
 857
 858     REINITOBJ(wxTheFontList, wxFontList);
 859     REINITOBJ(wxThePenList, wxPenList);
 860     REINITOBJ(wxTheBrushList, wxBrushList);
 861     REINITOBJ(wxTheColourDatabase, wxColourDatabase);
 862
 863
 864     REINITOBJ2(wxDefaultValidator, wxValidator);
 865     REINITOBJ2(wxNullImage, wxImage);
 866     REINITOBJ2(wxNullAcceleratorTable, wxAcceleratorTable);
 867
 868 #undef REINITOBJ
 869 #undef REINITOBJ2
 870 }
 871
 872 //---------------------------------------------------------------------------
 873
 874 // Check for existence of a wxApp, setting an exception if there isn't one.
 875 // This doesn't need to aquire the GIL because it should only be called from
 876 // an %exception before the lock is released.
 877
 878 bool wxPyCheckForApp() {
 879     if (wxTheApp != NULL)
 880         return true;
 881     else {
 882         PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
 883         return false;
 884     }
 885 }
 886
 887 //---------------------------------------------------------------------------
 888
 889 void wxPyUserData_dtor(wxPyUserData* self) {
 890     if (! wxPyDoingCleanup) {
 891         wxPyBlock_t blocked = wxPyBeginBlockThreads();
 892         Py_DECREF(self->m_obj);
 893         self->m_obj = NULL;
 894         wxPyEndBlockThreads(blocked);
 895     }
 896 }
 897
 898
 899 void wxPyClientData_dtor(wxPyClientData* self) {
 900     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 901                                         // may have already garbage collected the object...
 902         if (self->m_incRef) {
 903             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 904             Py_DECREF(self->m_obj);
 905             wxPyEndBlockThreads(blocked);
 906         }
 907         self->m_obj = NULL;
 908     }
 909 }
 910
 911
 912
 913 // This is called when an OOR controled object is being destroyed.  Although
 914 // the C++ object is going away there is no way to force the Python object
 915 // (and all references to it) to die too.  This causes problems (crashes) in
 916 // wxPython when a python shadow object attempts to call a C++ method using
 917 // the now bogus pointer... So to try and prevent this we'll do a little black
 918 // magic and change the class of the python instance to a class that will
 919 // raise an exception for any attempt to call methods with it.  See
 920 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 921 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 922
 923     static PyObject* deadObjectClass = NULL;
 924
 925     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 926     if (deadObjectClass == NULL) {
 927         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 928         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 929         // will lead to a deadlock when it tries to aquire the GIL again.
 930         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 931         Py_INCREF(deadObjectClass);
 932     }
 933
 934
 935     // Only if there is more than one reference to the object and we are
 936     // holding the OOR reference:
 937     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
 938         // bool isInstance = wxPyInstance_Check(self->m_obj);
 939         // TODO same here
 940         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 941
 942         // Call __del__, if there is one.
 943         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 944         if (func) {
 945             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 946             Py_XDECREF(rv);
 947             Py_DECREF(func);
 948         }
 949         if (PyErr_Occurred())
 950             PyErr_Clear();      // just ignore it for now
 951
 952
 953         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 954         if (dict) {
 955             // Clear the instance's dictionary
 956             PyDict_Clear(dict);
 957
 958             // put the name of the old class into the instance, and then reset the
 959             // class to be the dead class.
 960             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 961             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 962             PyDict_SetItemString(dict, "_name", name);
 963             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 964             //Py_INCREF(deadObjectClass);
 965             Py_DECREF(klass);
 966             Py_DECREF(name);
 967         }
 968     }
 969
 970     // m_obj is DECREF'd in the base class dtor...
 971     wxPyEndBlockThreads(blocked);
 972 }
 973
 974
 975 //---------------------------------------------------------------------------
 976 // Stuff used by OOR to find the right wxPython class type to return and to
 977 // build it.
 978
 979
 980 // The pointer type map is used when the "pointer" type name generated by SWIG
 981 // is not the same as the shadow class name, for example wxPyTreeCtrl
 982 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 983 // so we'll just make it a Python dictionary in the wx module's namespace.
 984 // (See __wxSetDictionary)
 985 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 986     if (! wxPyPtrTypeMap)
 987         wxPyPtrTypeMap = PyDict_New();
 988     PyDict_SetItemString(wxPyPtrTypeMap,
 989                          (char*)commonName,
 990                          PyString_FromString((char*)ptrName));
 991 }
 992
 993
 994
 995
 996 PyObject*  wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
 997     PyObject* target = NULL;
 998     bool      isEvtHandler = false;
 999
1000     if (source) {
1001         // If it's derived from wxEvtHandler then there may
1002         // already be a pointer to a Python object that we can use
1003         // in the OOR data.
1004         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
1005             isEvtHandler = true;
1006             wxEvtHandler* eh = (wxEvtHandler*)source;
1007             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
1008             if (data) {
1009                 target = data->m_obj;
1010                 if (target)
1011                     Py_INCREF(target);
1012             }
1013         }
1014
1015         if (! target) {
1016             // Otherwise make it the old fashioned way by making a new shadow
1017             // object and putting this pointer in it.  Look up the class
1018             // heirarchy until we find a class name that is located in the
1019             // python module.
1020             const wxClassInfo* info   = source->GetClassInfo();
1021             wxString           name   = info->GetClassName();
1022             bool               exists = wxPyCheckSwigType(name);
1023             while (info && !exists) {
1024                 info = info->GetBaseClass1();
1025                 name = info->GetClassName();
1026                 exists = wxPyCheckSwigType(name);
1027             }
1028             if (info) {
1029                 target = wxPyConstructObject((void*)source, name, setThisOwn);
1030                 if (target && isEvtHandler)
1031                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
1032             } else {
1033                 wxString msg(wxT("wxPython class not found for "));
1034                 msg += source->GetClassInfo()->GetClassName();
1035                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
1036                 target = NULL;
1037             }
1038         }
1039     } else {  // source was NULL so return None.
1040         Py_INCREF(Py_None); target = Py_None;
1041     }
1042     return target;
1043 }
1044
1045
1046 PyObject*  wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
1047     PyObject* target = NULL;
1048
1049     if (source && wxIsKindOf(source, wxSizer)) {
1050         // If it's derived from wxSizer then there may already be a pointer to
1051         // a Python object that we can use in the OOR data.
1052         wxSizer* sz = (wxSizer*)source;
1053         wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
1054         if (data) {
1055             target = data->m_obj;
1056             if (target)
1057                 Py_INCREF(target);
1058         }
1059     }
1060     if (! target) {
1061         target = wxPyMake_wxObject(source, setThisOwn, false);
1062         if (target != Py_None)
1063             ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
1064     }
1065     return target;
1066 }
1067
1068
1069 //---------------------------------------------------------------------------
1070
1071
1072 #ifdef WXP_WITH_THREAD
1073 #if !wxPyUSE_GIL_STATE
1074
1075 inline
1076 unsigned long wxPyGetCurrentThreadId() {
1077     return wxThread::GetCurrentId();
1078 }
1079
1080 static wxPyThreadState gs_shutdownTState;
1081
1082 static
1083 wxPyThreadState* wxPyGetThreadState() {
1084     if (wxPyTMutex == NULL) // Python is shutting down...
1085         return &gs_shutdownTState;
1086
1087     unsigned long ctid = wxPyGetCurrentThreadId();
1088     wxPyThreadState* tstate = NULL;
1089
1090     wxPyTMutex->Lock();
1091     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1092         wxPyThreadState& info = wxPyTStates->Item(i);
1093         if (info.tid == ctid) {
1094             tstate = &info;
1095             break;
1096         }
1097     }
1098     wxPyTMutex->Unlock();
1099     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
1100     return tstate;
1101 }
1102
1103
1104 static
1105 void wxPySaveThreadState(PyThreadState* tstate) {
1106     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
1107         gs_shutdownTState.tstate = tstate;
1108         return;
1109     }
1110     unsigned long ctid = wxPyGetCurrentThreadId();
1111     wxPyTMutex->Lock();
1112     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1113         wxPyThreadState& info = wxPyTStates->Item(i);
1114         if (info.tid == ctid) {
1115 #if 0
1116             if (info.tstate != tstate)
1117                 wxLogMessage("*** tstate mismatch!???");
1118 #endif
1119             info.tstate = tstate;    // allow for transient tstates
1120             // Normally it will never change, but apparently COM callbacks
1121             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
1122             // tstate which will then be garbage the next time we try to use
1123             // it...
1124
1125             wxPyTMutex->Unlock();
1126             return;
1127         }
1128     }
1129     // not found, so add it...
1130     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
1131     wxPyTMutex->Unlock();
1132 }
1133
1134 #endif
1135 #endif
1136
1137
1138
1139 // Calls from Python to wxWindows code are wrapped in calls to these
1140 // functions:
1141
1142 PyThreadState* wxPyBeginAllowThreads() {
1143 #ifdef WXP_WITH_THREAD
1144     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1145 #if !wxPyUSE_GIL_STATE
1146     wxPySaveThreadState(saved);
1147 #endif
1148     return saved;
1149 #else
1150     return NULL;
1151 #endif
1152 }
1153
1154 void wxPyEndAllowThreads(PyThreadState* saved) {
1155 #ifdef WXP_WITH_THREAD
1156     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1157 #endif
1158 }
1159
1160
1161
1162 // Calls from wxWindows back to Python code, or even any PyObject
1163 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1164
1165 wxPyBlock_t wxPyBeginBlockThreads() {
1166 #ifdef WXP_WITH_THREAD
1167 #if wxPyUSE_GIL_STATE
1168     PyGILState_STATE state = PyGILState_Ensure();
1169     return state;
1170 #else
1171     PyThreadState *current = _PyThreadState_Current;
1172
1173     // Only block if there wasn't already a tstate, or if the current one is
1174     // not the one we are wanting to change to.  This should prevent deadlock
1175     // if there are nested calls to wxPyBeginBlockThreads
1176     wxPyBlock_t blocked = false;
1177     wxPyThreadState* tstate = wxPyGetThreadState();
1178     if (current != tstate->tstate) {
1179         PyEval_RestoreThread(tstate->tstate);
1180         blocked = true;
1181     }
1182     return blocked;
1183 #endif
1184 #else
1185     return false;
1186 #endif
1187 }
1188
1189
1190 void wxPyEndBlockThreads(wxPyBlock_t blocked) {
1191 #ifdef WXP_WITH_THREAD
1192 #if wxPyUSE_GIL_STATE
1193     PyGILState_Release(blocked);
1194 #else
1195     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1196     // The value of blocked passed in needs to be the same as that returned
1197     // from wxPyBeginBlockThreads at the same nesting level.
1198     if ( blocked ) {
1199         PyEval_SaveThread();
1200     }
1201 #endif
1202 #endif
1203 }
1204
1205
1206 //---------------------------------------------------------------------------
1207 // wxPyInputStream and wxPyCBInputStream methods
1208
1209
1210 void wxPyInputStream::close() {
1211     /* do nothing for now */
1212 }
1213
1214 void wxPyInputStream::flush() {
1215     /* do nothing for now */
1216 }
1217
1218 bool wxPyInputStream::eof() {
1219     if (m_wxis)
1220         return m_wxis->Eof();
1221     else
1222         return true;
1223 }
1224
1225 wxPyInputStream::~wxPyInputStream() {
1226     if (m_wxis)
1227         delete m_wxis;
1228 }
1229
1230
1231
1232
1233 PyObject* wxPyInputStream::read(int size) {
1234     PyObject* obj = NULL;
1235     wxMemoryBuffer buf;
1236     const int BUFSIZE = 1024;
1237
1238     // check if we have a real wxInputStream to work with
1239     if (!m_wxis) {
1240         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1241         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1242         wxPyEndBlockThreads(blocked);
1243         return NULL;
1244     }
1245
1246     if (size < 0) {
1247         // read while bytes are available on the stream
1248         while ( m_wxis->CanRead() ) {
1249             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1250             buf.UngetAppendBuf(m_wxis->LastRead());
1251         }
1252
1253     } else {  // Read only size number of characters
1254         m_wxis->Read(buf.GetWriteBuf(size), size);
1255         buf.UngetWriteBuf(m_wxis->LastRead());
1256     }
1257
1258     // error check
1259     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1260     wxStreamError err = m_wxis->GetLastError();
1261     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1262         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1263     }
1264     else {
1265         // We use only strings for the streams, not unicode
1266         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1267     }
1268     wxPyEndBlockThreads(blocked);
1269     return obj;
1270 }
1271
1272
1273 PyObject* wxPyInputStream::readline(int size) {
1274     PyObject* obj = NULL;
1275     wxMemoryBuffer buf;
1276     int i;
1277     char ch;
1278
1279     // check if we have a real wxInputStream to work with
1280     if (!m_wxis) {
1281         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1282         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1283         wxPyEndBlockThreads(blocked);
1284         return NULL;
1285     }
1286
1287     // read until \n or byte limit reached
1288     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1289         ch = m_wxis->GetC();
1290         buf.AppendByte(ch);
1291     }
1292
1293     // errorcheck
1294     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1295     wxStreamError err = m_wxis->GetLastError();
1296     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1297         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1298     }
1299     else {
1300         // We use only strings for the streams, not unicode
1301         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1302     }
1303     wxPyEndBlockThreads(blocked);
1304     return obj;
1305 }
1306
1307
1308 PyObject* wxPyInputStream::readlines(int sizehint) {
1309     PyObject* pylist;
1310
1311     // check if we have a real wxInputStream to work with
1312     if (!m_wxis) {
1313         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1314         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1315         wxPyEndBlockThreads(blocked);
1316         return NULL;
1317     }
1318
1319     // init list
1320     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1321     pylist = PyList_New(0);
1322     wxPyEndBlockThreads(blocked);
1323
1324     if (!pylist) {
1325         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1326         PyErr_NoMemory();
1327         wxPyEndBlockThreads(blocked);
1328         return NULL;
1329     }
1330
1331     // read sizehint bytes or until EOF
1332     int i;
1333     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1334         PyObject* s = this->readline();
1335         if (s == NULL) {
1336             wxPyBlock_t blocked = wxPyBeginBlockThreads();
1337             Py_DECREF(pylist);
1338             wxPyEndBlockThreads(blocked);
1339             return NULL;
1340         }
1341         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1342         PyList_Append(pylist, s);
1343         i += PyString_Size(s);
1344         wxPyEndBlockThreads(blocked);
1345     }
1346
1347     // error check
1348     wxStreamError err = m_wxis->GetLastError();
1349     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1350         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1351         Py_DECREF(pylist);
1352         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1353         wxPyEndBlockThreads(blocked);
1354         return NULL;
1355     }
1356
1357     return pylist;
1358 }
1359
1360
1361 void wxPyInputStream::seek(int offset, int whence) {
1362     if (m_wxis)
1363         m_wxis->SeekI(offset, wxSeekMode(whence));
1364 }
1365
1366 int wxPyInputStream::tell(){
1367     if (m_wxis)
1368         return m_wxis->TellI();
1369     else return 0;
1370 }
1371
1372
1373
1374
1375 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1376     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1377 {}
1378
1379 wxPyCBInputStream::wxPyCBInputStream(const wxPyCBInputStream& other)
1380 {
1381     m_read  = other.m_read;
1382     m_seek  = other.m_seek;
1383     m_tell  = other.m_tell;
1384     m_block = other.m_block;
1385     Py_INCREF(m_read);
1386     Py_INCREF(m_seek);
1387     Py_INCREF(m_tell);
1388 }
1389
1390
1391 wxPyCBInputStream::~wxPyCBInputStream() {
1392     wxPyBlock_t blocked;
1393     if (m_block) blocked = wxPyBeginBlockThreads();
1394     Py_XDECREF(m_read);
1395     Py_XDECREF(m_seek);
1396     Py_XDECREF(m_tell);
1397     if (m_block) wxPyEndBlockThreads(blocked);
1398 }
1399
1400
1401 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1402     wxPyBlock_t blocked;
1403     if (block) blocked = wxPyBeginBlockThreads();
1404
1405     PyObject* read = getMethod(py, "read");
1406     PyObject* seek = getMethod(py, "seek");
1407     PyObject* tell = getMethod(py, "tell");
1408
1409     if (!read) {
1410         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1411         Py_XDECREF(read);
1412         Py_XDECREF(seek);
1413         Py_XDECREF(tell);
1414         if (block) wxPyEndBlockThreads(blocked);
1415         return NULL;
1416     }
1417
1418     if (block) wxPyEndBlockThreads(blocked);
1419     return new wxPyCBInputStream(read, seek, tell, block);
1420 }
1421
1422
1423 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1424     return wxPyCBInputStream::create(py, block);
1425 }
1426
1427 wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other) {
1428     return new wxPyCBInputStream(*other);
1429 }
1430
1431 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1432     if (!PyObject_HasAttrString(py, name))
1433         return NULL;
1434     PyObject* o = PyObject_GetAttrString(py, name);
1435     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1436         Py_DECREF(o);
1437         return NULL;
1438     }
1439     return o;
1440 }
1441
1442
1443 wxFileOffset wxPyCBInputStream::GetLength() const {
1444     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1445     if (m_seek && m_tell) {
1446         wxFileOffset temp = self->OnSysTell();
1447         wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
1448         self->OnSysSeek(temp, wxFromStart);
1449         return ret;
1450     }
1451     else
1452         return wxInvalidOffset;
1453 }
1454
1455
1456 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1457     if (bufsize == 0)
1458         return 0;
1459
1460     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1461     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1462     PyObject* result = PyEval_CallObject(m_read, arglist);
1463     Py_DECREF(arglist);
1464
1465     size_t o = 0;
1466     if ((result != NULL) && PyString_Check(result)) {
1467         o = PyString_Size(result);
1468         if (o == 0)
1469             m_lasterror = wxSTREAM_EOF;
1470         if (o > bufsize)
1471             o = bufsize;
1472         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1473         Py_DECREF(result);
1474
1475     }
1476     else
1477         m_lasterror = wxSTREAM_READ_ERROR;
1478     wxPyEndBlockThreads(blocked);
1479     return o;
1480 }
1481
1482 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1483     m_lasterror = wxSTREAM_WRITE_ERROR;
1484     return 0;
1485 }
1486
1487
1488 wxFileOffset wxPyCBInputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
1489     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1490     PyObject* arglist = PyTuple_New(2);
1491
1492     if (sizeof(wxFileOffset) > sizeof(long))
1493         // wxFileOffset is a 64-bit value...
1494         PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
1495     else
1496         PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
1497
1498     PyTuple_SET_ITEM(arglist, 1, PyInt_FromLong(mode));
1499
1500
1501     PyObject* result = PyEval_CallObject(m_seek, arglist);
1502     Py_DECREF(arglist);
1503     Py_XDECREF(result);
1504     wxPyEndBlockThreads(blocked);
1505     return OnSysTell();
1506 }
1507
1508
1509 wxFileOffset wxPyCBInputStream::OnSysTell() const {
1510     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1511     PyObject* arglist = Py_BuildValue("()");
1512     PyObject* result = PyEval_CallObject(m_tell, arglist);
1513     Py_DECREF(arglist);
1514     wxFileOffset o = 0;
1515     if (result != NULL) {
1516         if (PyLong_Check(result))
1517             o = PyLong_AsLongLong(result);
1518         else
1519             o = PyInt_AsLong(result);
1520         Py_DECREF(result);
1521     };
1522     wxPyEndBlockThreads(blocked);
1523     return o;
1524 }
1525
1526 //----------------------------------------------------------------------
1527
1528 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1529
1530 wxPyCallback::wxPyCallback(PyObject* func) {
1531     m_func = func;
1532     Py_INCREF(m_func);
1533 }
1534
1535 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1536     m_func = other.m_func;
1537     Py_INCREF(m_func);
1538 }
1539
1540 wxPyCallback::~wxPyCallback() {
1541     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1542     Py_DECREF(m_func);
1543     wxPyEndBlockThreads(blocked);
1544 }
1545
1546
1547 #define wxPy_PRECALLINIT     "_preCallInit"
1548 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1549
1550 // This function is used for all events destined for Python event handlers.
1551 void wxPyCallback::EventThunker(wxEvent& event) {
1552     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1553     PyObject*       func = cb->m_func;
1554     PyObject*       result;
1555     PyObject*       arg;
1556     PyObject*       tuple;
1557     bool            checkSkip = false;
1558
1559     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1560     wxString className = event.GetClassInfo()->GetClassName();
1561
1562     // If the event is one of these types then pass the original
1563     // event object instead of the one passed to us.
1564     if ( className == wxT("wxPyEvent") ) {
1565         arg =       ((wxPyEvent*)&event)->GetSelf();
1566         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1567     }
1568     else if ( className == wxT("wxPyCommandEvent") ) {
1569         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1570         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1571     }
1572     else {
1573         arg = wxPyConstructObject((void*)&event, className);
1574     }
1575
1576     if (!arg) {
1577         PyErr_Print();
1578     } else {
1579         // "intern" the pre/post method names to speed up the HasAttr
1580         static PyObject* s_preName  = NULL;
1581         static PyObject* s_postName = NULL;
1582         if (s_preName == NULL) {
1583             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1584             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1585         }
1586
1587         // Check if the event object needs some preinitialization
1588         if (PyObject_HasAttr(arg, s_preName)) {
1589             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1590             if ( result ) {
1591                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1592                 PyErr_Clear();       // Just in case...
1593             } else {
1594                 PyErr_Print();
1595             }
1596         }
1597
1598         // Call the event handler, passing the event object
1599         tuple = PyTuple_New(1);
1600         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1601         result = PyEval_CallObject(func, tuple);
1602         if ( result ) {
1603             Py_DECREF(result);   // result is ignored, but we still need to decref it
1604             PyErr_Clear();       // Just in case...
1605         } else {
1606             PyErr_Print();
1607         }
1608
1609         // Check if the event object needs some post cleanup
1610         if (PyObject_HasAttr(arg, s_postName)) {
1611             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1612             if ( result ) {
1613                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1614                 PyErr_Clear();       // Just in case...
1615             } else {
1616                 PyErr_Print();
1617             }
1618         }
1619
1620         if ( checkSkip ) {
1621             // if the event object was one of our special types and
1622             // it had been cloned, then we need to extract the Skipped
1623             // value from the original and set it in the clone.
1624             result = PyObject_CallMethod(arg, "GetSkipped", "");
1625             if ( result ) {
1626                 event.Skip(PyInt_AsLong(result));
1627                 Py_DECREF(result);
1628             } else {
1629                 PyErr_Print();
1630             }
1631         }
1632         Py_DECREF(tuple);
1633     }
1634     wxPyEndBlockThreads(blocked);
1635 }
1636
1637
1638 //----------------------------------------------------------------------
1639
1640 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1641       m_lastFound = NULL;
1642       m_self = other.m_self;
1643       m_class = other.m_class;
1644       if (m_self) {
1645           Py_INCREF(m_self);
1646           Py_INCREF(m_class);
1647       }
1648 }
1649
1650
1651 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1652     m_self = self;
1653     m_class = klass;
1654     m_incRef = incref;
1655     if (incref) {
1656         Py_INCREF(m_self);
1657         Py_INCREF(m_class);
1658     }
1659 }
1660
1661
1662 #if PYTHON_API_VERSION >= 1011
1663
1664 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1665 // in which the method was defined.  Starting with 2.2 it returns
1666 // "class that asked for the method" which seems totally bogus to me
1667 // but apprently it fixes some obscure problem waiting to happen in
1668 // Python.  Since the API was not documented Guido and the gang felt
1669 // safe in changing it.  Needless to say that totally screwed up the
1670 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1671 // code to find the class where the method is actually defined...
1672
1673 static
1674 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1675 {
1676     int i, n;
1677
1678     if (PyType_Check(klass)) {      // new style classes
1679         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1680         PyTypeObject* type = (PyTypeObject*)klass;
1681         PyObject *mro, *res, *base, *dict;
1682         /* Look in tp_dict of types in MRO */
1683         mro = type->tp_mro;
1684         assert(PyTuple_Check(mro));
1685         n = PyTuple_GET_SIZE(mro);
1686         for (i = 0; i < n; i++) {
1687             base = PyTuple_GET_ITEM(mro, i);
1688             if (PyClass_Check(base))
1689                 dict = ((PyClassObject *)base)->cl_dict;
1690             else {
1691                 assert(PyType_Check(base));
1692                 dict = ((PyTypeObject *)base)->tp_dict;
1693             }
1694             assert(dict && PyDict_Check(dict));
1695             res = PyDict_GetItem(dict, name);
1696             if (res != NULL)
1697                 return base;
1698         }
1699         return NULL;
1700     }
1701
1702     else if (PyClass_Check(klass)) { // old style classes
1703         // This code is borrowed/adapted from class_lookup in classobject.c
1704         PyClassObject* cp = (PyClassObject*)klass;
1705         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1706         if (value != NULL) {
1707             return (PyObject*)cp;
1708         }
1709         n = PyTuple_Size(cp->cl_bases);
1710         for (i = 0; i < n; i++) {
1711             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1712             PyObject *v = PyFindClassWithAttr(base, name);
1713             if (v != NULL)
1714                 return v;
1715         }
1716         return NULL;
1717     }
1718     return NULL;
1719 }
1720 #endif
1721
1722
1723 static
1724 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
1725 {
1726     PyObject* mgc = PyMethod_GET_CLASS(method);
1727
1728 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1729     return mgc;
1730 #else                             // 2.2 and after, the hard way...
1731
1732     PyObject* nameo = PyString_FromString(name);
1733     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
1734     Py_DECREF(nameo);
1735     return klass;
1736 #endif
1737 }
1738
1739
1740
1741 bool wxPyCallbackHelper::findCallback(const char* name) const {
1742     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1743     self->m_lastFound = NULL;
1744
1745     // If the object (m_self) has an attibute of the given name...
1746     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
1747         PyObject *method, *klass;
1748         method = PyObject_GetAttrString(m_self, (char*)name);
1749
1750         // ...and if that attribute is a method, and if that method's class is
1751         // not from a base class...
1752         if (PyMethod_Check(method) &&
1753             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
1754             ((klass == m_class) || PyObject_IsSubclass(klass, m_class))) {
1755
1756             // ...then we'll save a pointer to the method so callCallback can call it.
1757             self->m_lastFound = method;
1758         }
1759         else {
1760             Py_DECREF(method);
1761         }
1762     }
1763     return m_lastFound != NULL;
1764 }
1765
1766
1767 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1768     PyObject*   result;
1769     int         retval = false;
1770
1771     result = callCallbackObj(argTuple);
1772     if (result) {                       // Assumes an integer return type...
1773         retval = PyInt_AsLong(result);
1774         Py_DECREF(result);
1775         PyErr_Clear();                  // forget about it if it's not...
1776     }
1777     return retval;
1778 }
1779
1780 // Invoke the Python callable object, returning the raw PyObject return
1781 // value.  Caller should DECREF the return value and also manage the GIL.
1782 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1783     PyObject* result;
1784
1785     // Save a copy of the pointer in case the callback generates another
1786     // callback.  In that case m_lastFound will have a different value when
1787     // it gets back here...
1788     PyObject* method = m_lastFound;
1789
1790     result = PyEval_CallObject(method, argTuple);
1791     Py_DECREF(argTuple);
1792     Py_DECREF(method);
1793     if (!result) {
1794         PyErr_Print();
1795     }
1796     return result;
1797 }
1798
1799
1800 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1801     cbh.setSelf(self, klass, incref);
1802 }
1803
1804 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
1805     return cbh.findCallback(name);
1806 }
1807
1808 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1809     return cbh.callCallback(argTuple);
1810 }
1811
1812 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1813     return cbh.callCallbackObj(argTuple);
1814 }
1815
1816
1817 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1818     if (cbh->m_incRef) {
1819         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1820         Py_XDECREF(cbh->m_self);
1821         Py_XDECREF(cbh->m_class);
1822         wxPyEndBlockThreads(blocked);
1823     }
1824 }
1825
1826 //---------------------------------------------------------------------------
1827 //---------------------------------------------------------------------------
1828 // These event classes can be derived from in Python and passed through the event
1829 // system without losing anything.  They do this by keeping a reference to
1830 // themselves and some special case handling in wxPyCallback::EventThunker.
1831
1832
1833 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1834     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1835     //Py_INCREF(m_self);        //      circular loops...
1836     m_cloned = false;
1837 }
1838
1839 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1840     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1841     if (m_cloned)
1842         Py_DECREF(m_self);
1843     wxPyEndBlockThreads(blocked);
1844 }
1845
1846 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1847     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1848     if (m_cloned)
1849         Py_DECREF(m_self);
1850     m_self = self;
1851     if (clone) {
1852         Py_INCREF(m_self);
1853         m_cloned = true;
1854     }
1855     wxPyEndBlockThreads(blocked);
1856 }
1857
1858 PyObject* wxPyEvtSelfRef::GetSelf() const {
1859     Py_INCREF(m_self);
1860     return m_self;
1861 }
1862
1863
1864 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1865 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1866
1867
1868 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1869     : wxEvent(winid, commandType) {
1870 }
1871
1872
1873 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1874     : wxEvent(evt)
1875 {
1876     SetSelf(evt.m_self, true);
1877 }
1878
1879
1880 wxPyEvent::~wxPyEvent() {
1881 }
1882
1883
1884 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1885     : wxCommandEvent(commandType, id) {
1886 }
1887
1888
1889 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1890     : wxCommandEvent(evt)
1891 {
1892     SetSelf(evt.m_self, true);
1893 }
1894
1895
1896 wxPyCommandEvent::~wxPyCommandEvent() {
1897 }
1898
1899
1900
1901
1902
1903 //---------------------------------------------------------------------------
1904 //---------------------------------------------------------------------------
1905 // Convert a wxList to a Python List, only works for lists of wxObjects
1906
1907 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1908     wxList*     list = (wxList*)listbase;  // this is probably bad...
1909     PyObject*   pyList;
1910     PyObject*   pyObj;
1911     wxObject*   wxObj;
1912     wxNode*     node = list->GetFirst();
1913
1914     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1915     pyList = PyList_New(0);
1916     while (node) {
1917         wxObj = node->GetData();
1918         pyObj = wxPyMake_wxObject(wxObj,false);
1919         PyList_Append(pyList, pyObj);
1920         node = node->GetNext();
1921     }
1922     wxPyEndBlockThreads(blocked);
1923     return pyList;
1924 }
1925
1926 //----------------------------------------------------------------------
1927
1928 long wxPyGetWinHandle(wxWindow* win) {
1929
1930 #ifdef __WXMSW__
1931     return (long)win->GetHandle();
1932 #endif
1933
1934 #if defined(__WXGTK__) || defined(__WXX11)
1935     return (long)GetXWindow(win);
1936 #endif
1937
1938 #ifdef __WXMAC__
1939     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
1940     return (long)win->GetHandle();
1941 #endif
1942
1943     return 0;
1944 }
1945
1946 //----------------------------------------------------------------------
1947 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1948 // included in every file over and over again...
1949
1950 wxString* wxString_in_helper(PyObject* source) {
1951     wxString* target = NULL;
1952
1953     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1954         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
1955         return NULL;
1956     }
1957 #if wxUSE_UNICODE
1958     PyObject* uni = source;
1959     if (PyString_Check(source)) {
1960         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1961         if (PyErr_Occurred()) return NULL;
1962     }
1963     target = new wxString();
1964     size_t len = PyUnicode_GET_SIZE(uni);
1965     if (len) {
1966         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target->GetWriteBuf(len), len);
1967         target->UngetWriteBuf(len);
1968     }
1969
1970     if (PyString_Check(source))
1971         Py_DECREF(uni);
1972 #else
1973     // Convert to a string object if it isn't already, then to wxString
1974     PyObject* str = source;
1975     if (PyUnicode_Check(source)) {
1976         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1977         if (PyErr_Occurred()) return NULL;
1978     }
1979     else if (!PyString_Check(source)) {
1980         str = PyObject_Str(source);
1981         if (PyErr_Occurred()) return NULL;
1982     }
1983     char* tmpPtr; int tmpSize;
1984     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1985     target = new wxString(tmpPtr, tmpSize);
1986
1987     if (!PyString_Check(source))
1988         Py_DECREF(str);
1989 #endif // wxUSE_UNICODE
1990
1991     return target;
1992 }
1993
1994
1995 // Similar to above except doesn't use "new" and doesn't set an exception
1996 wxString Py2wxString(PyObject* source)
1997 {
1998     wxString target;
1999
2000 #if wxUSE_UNICODE
2001     // Convert to a unicode object, if not already, then to a wxString
2002     PyObject* uni = source;
2003     if (!PyUnicode_Check(source)) {
2004         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
2005         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
2006     }
2007     size_t len = PyUnicode_GET_SIZE(uni);
2008     if (len) {
2009         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target.GetWriteBuf(len), len);
2010         target.UngetWriteBuf();
2011     }
2012
2013     if (!PyUnicode_Check(source))
2014         Py_DECREF(uni);
2015 #else
2016     // Convert to a string object if it isn't already, then to wxString
2017     PyObject* str = source;
2018     if (PyUnicode_Check(source)) {
2019         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
2020         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
2021     }
2022     else if (!PyString_Check(source)) {
2023         str = PyObject_Str(source);
2024         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
2025     }
2026     char* tmpPtr; int tmpSize;
2027     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
2028     target = wxString(tmpPtr, tmpSize);
2029
2030     if (!PyString_Check(source))
2031         Py_DECREF(str);
2032 #endif // wxUSE_UNICODE
2033
2034     return target;
2035 }
2036
2037
2038 // Make either a Python String or Unicode object, depending on build mode
2039 PyObject* wx2PyString(const wxString& src)
2040 {
2041     PyObject* str;
2042 #if wxUSE_UNICODE
2043     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
2044 #else
2045     str = PyString_FromStringAndSize(src.c_str(), src.Len());
2046 #endif
2047     return str;
2048 }
2049
2050
2051
2052 void wxSetDefaultPyEncoding(const char* encoding)
2053 {
2054     strncpy(wxPyDefaultEncoding, encoding, DEFAULTENCODING_SIZE);
2055 }
2056
2057 const char* wxGetDefaultPyEncoding()
2058 {
2059     return wxPyDefaultEncoding;
2060 }
2061
2062 //----------------------------------------------------------------------
2063
2064
2065 byte* byte_LIST_helper(PyObject* source) {
2066     if (!PyList_Check(source)) {
2067         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2068         return NULL;
2069     }
2070     int count = PyList_Size(source);
2071     byte* temp = new byte[count];
2072     if (! temp) {
2073         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2074         return NULL;
2075     }
2076     for (int x=0; x<count; x++) {
2077         PyObject* o = PyList_GetItem(source, x);
2078         if (! PyInt_Check(o)) {
2079             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2080             return NULL;
2081         }
2082         temp[x] = (byte)PyInt_AsLong(o);
2083     }
2084     return temp;
2085 }
2086
2087
2088 int* int_LIST_helper(PyObject* source) {
2089     if (!PyList_Check(source)) {
2090         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2091         return NULL;
2092     }
2093     int count = PyList_Size(source);
2094     int* temp = new int[count];
2095     if (! temp) {
2096         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2097         return NULL;
2098     }
2099     for (int x=0; x<count; x++) {
2100         PyObject* o = PyList_GetItem(source, x);
2101         if (! PyInt_Check(o)) {
2102             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2103             return NULL;
2104         }
2105         temp[x] = PyInt_AsLong(o);
2106     }
2107     return temp;
2108 }
2109
2110
2111 long* long_LIST_helper(PyObject* source) {
2112     if (!PyList_Check(source)) {
2113         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2114         return NULL;
2115     }
2116     int count = PyList_Size(source);
2117     long* temp = new long[count];
2118     if (! temp) {
2119         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2120         return NULL;
2121     }
2122     for (int x=0; x<count; x++) {
2123         PyObject* o = PyList_GetItem(source, x);
2124         if (! PyInt_Check(o)) {
2125             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2126             return NULL;
2127         }
2128         temp[x] = PyInt_AsLong(o);
2129     }
2130     return temp;
2131 }
2132
2133
2134 char** string_LIST_helper(PyObject* source) {
2135     if (!PyList_Check(source)) {
2136         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2137         return NULL;
2138     }
2139     int count = PyList_Size(source);
2140     char** temp = new char*[count];
2141     if (! temp) {
2142         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2143         return NULL;
2144     }
2145     for (int x=0; x<count; x++) {
2146         PyObject* o = PyList_GetItem(source, x);
2147         if (! PyString_Check(o)) {
2148             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2149             return NULL;
2150         }
2151         temp[x] = PyString_AsString(o);
2152     }
2153     return temp;
2154 }
2155
2156 //--------------------------------
2157 // Part of patch from Tim Hochberg
2158 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
2159     if (PyInt_Check(o1) && PyInt_Check(o2)) {
2160         point->x = PyInt_AS_LONG(o1);
2161         point->y = PyInt_AS_LONG(o2);
2162         return true;
2163     }
2164     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
2165         point->x = (int)PyFloat_AS_DOUBLE(o1);
2166         point->y = (int)PyFloat_AS_DOUBLE(o2);
2167         return true;
2168     }
2169     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {  // TODO: Why???
2170         // Disallow instances because they can cause havok
2171         return false;
2172     }
2173     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
2174         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
2175         point->x = PyInt_AsLong(o1);
2176         point->y = PyInt_AsLong(o2);
2177         return true;
2178     }
2179     return false;
2180 }
2181
2182
2183 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
2184     // Putting all of the declarations here allows
2185     // us to put the error handling all in one place.
2186     int x;
2187     wxPoint* temp;
2188     PyObject *o, *o1, *o2;
2189     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2190
2191     if (!PySequence_Check(source)) {
2192         goto error0;
2193     }
2194
2195     // The length of the sequence is returned in count.
2196     *count = PySequence_Length(source);
2197     if (*count < 0) {
2198         goto error0;
2199     }
2200
2201     temp = new wxPoint[*count];
2202     if (!temp) {
2203         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2204         return NULL;
2205     }
2206     for (x=0; x<*count; x++) {
2207         // Get an item: try fast way first.
2208         if (isFast) {
2209             o = PySequence_Fast_GET_ITEM(source, x);
2210         }
2211         else {
2212             o = PySequence_GetItem(source, x);
2213             if (o == NULL) {
2214                 goto error1;
2215             }
2216         }
2217
2218         // Convert o to wxPoint.
2219         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2220             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2221             o1 = PySequence_Fast_GET_ITEM(o, 0);
2222             o2 = PySequence_Fast_GET_ITEM(o, 1);
2223             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2224                 goto error2;
2225             }
2226         }
2227         else if (wxPySwigInstance_Check(o)) {
2228             wxPoint* pt;
2229             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2230                 goto error2;
2231             }
2232             temp[x] = *pt;
2233         }
2234         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2235             o1 = PySequence_GetItem(o, 0);
2236             o2 = PySequence_GetItem(o, 1);
2237             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2238                 goto error3;
2239             }
2240             Py_DECREF(o1);
2241             Py_DECREF(o2);
2242         }
2243         else {
2244             goto error2;
2245         }
2246         // Clean up.
2247         if (!isFast)
2248             Py_DECREF(o);
2249     }
2250     return temp;
2251
2252 error3:
2253     Py_DECREF(o1);
2254     Py_DECREF(o2);
2255 error2:
2256     if (!isFast)
2257         Py_DECREF(o);
2258 error1:
2259     delete [] temp;
2260 error0:
2261     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2262     return NULL;
2263 }
2264 // end of patch
2265 //------------------------------
2266
2267
2268 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2269     if (!PyList_Check(source)) {
2270         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2271         return NULL;
2272     }
2273     int count = PyList_Size(source);
2274     wxBitmap** temp = new wxBitmap*[count];
2275     if (! temp) {
2276         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2277         return NULL;
2278     }
2279     for (int x=0; x<count; x++) {
2280         PyObject* o = PyList_GetItem(source, x);
2281         if (wxPySwigInstance_Check(o)) {
2282             wxBitmap*    pt;
2283             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2284                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2285                 return NULL;
2286             }
2287             temp[x] = pt;
2288         }
2289         else {
2290             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2291             return NULL;
2292         }
2293     }
2294     return temp;
2295 }
2296
2297
2298
2299 wxString* wxString_LIST_helper(PyObject* source) {
2300     if (!PyList_Check(source)) {
2301         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2302         return NULL;
2303     }
2304     int count = PyList_Size(source);
2305     wxString* temp = new wxString[count];
2306     if (! temp) {
2307         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2308         return NULL;
2309     }
2310     for (int x=0; x<count; x++) {
2311         PyObject* o = PyList_GetItem(source, x);
2312 #if PYTHON_API_VERSION >= 1009
2313         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2314             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2315             return NULL;
2316         }
2317 #else
2318         if (! PyString_Check(o)) {
2319             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2320             return NULL;
2321         }
2322 #endif
2323
2324         wxString* pStr = wxString_in_helper(o);
2325         temp[x] = *pStr;
2326         delete pStr;
2327     }
2328     return temp;
2329 }
2330
2331
2332 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2333     if (!PyList_Check(source)) {
2334         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2335         return NULL;
2336     }
2337     int count                = PyList_Size(source);
2338     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2339     if (! temp) {
2340         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2341         return NULL;
2342     }
2343     for (int x=0; x<count; x++) {
2344         PyObject* o = PyList_GetItem(source, x);
2345         if (wxPySwigInstance_Check(o)) {
2346             wxAcceleratorEntry* ae;
2347             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2348                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2349                 return NULL;
2350             }
2351             temp[x] = *ae;
2352         }
2353         else if (PyTuple_Check(o)) {
2354             PyObject* o1 = PyTuple_GetItem(o, 0);
2355             PyObject* o2 = PyTuple_GetItem(o, 1);
2356             PyObject* o3 = PyTuple_GetItem(o, 2);
2357             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2358         }
2359         else {
2360             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2361             return NULL;
2362         }
2363     }
2364     return temp;
2365 }
2366
2367
2368 wxPen** wxPen_LIST_helper(PyObject* source) {
2369     if (!PyList_Check(source)) {
2370         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2371         return NULL;
2372     }
2373     int count = PyList_Size(source);
2374     wxPen** temp = new wxPen*[count];
2375     if (!temp) {
2376         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2377         return NULL;
2378     }
2379     for (int x=0; x<count; x++) {
2380         PyObject* o = PyList_GetItem(source, x);
2381         if (wxPySwigInstance_Check(o)) {
2382             wxPen*  pt;
2383             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2384                 delete temp;
2385                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2386                 return NULL;
2387             }
2388             temp[x] = pt;
2389         }
2390         else {
2391             delete temp;
2392             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2393             return NULL;
2394         }
2395     }
2396     return temp;
2397 }
2398
2399
2400 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2401     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2402     PyObject *o1, *o2;
2403
2404     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2405         return false;
2406
2407     if (isFast) {
2408         o1 = PySequence_Fast_GET_ITEM(source, 0);
2409         o2 = PySequence_Fast_GET_ITEM(source, 1);
2410     }
2411     else {
2412         o1 = PySequence_GetItem(source, 0);
2413         o2 = PySequence_GetItem(source, 1);
2414     }
2415
2416     *i1 = PyInt_AsLong(o1);
2417     *i2 = PyInt_AsLong(o2);
2418
2419     if (! isFast) {
2420         Py_DECREF(o1);
2421         Py_DECREF(o2);
2422     }
2423     return true;
2424 }
2425
2426
2427 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2428     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2429     PyObject *o1, *o2, *o3, *o4;
2430
2431     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2432         return false;
2433
2434     if (isFast) {
2435         o1 = PySequence_Fast_GET_ITEM(source, 0);
2436         o2 = PySequence_Fast_GET_ITEM(source, 1);
2437         o3 = PySequence_Fast_GET_ITEM(source, 2);
2438         o4 = PySequence_Fast_GET_ITEM(source, 3);
2439     }
2440     else {
2441         o1 = PySequence_GetItem(source, 0);
2442         o2 = PySequence_GetItem(source, 1);
2443         o3 = PySequence_GetItem(source, 2);
2444         o4 = PySequence_GetItem(source, 3);
2445     }
2446
2447     *i1 = PyInt_AsLong(o1);
2448     *i2 = PyInt_AsLong(o2);
2449     *i3 = PyInt_AsLong(o3);
2450     *i4 = PyInt_AsLong(o4);
2451
2452     if (! isFast) {
2453         Py_DECREF(o1);
2454         Py_DECREF(o2);
2455         Py_DECREF(o3);
2456         Py_DECREF(o4);
2457     }
2458     return true;
2459 }
2460
2461
2462 //----------------------------------------------------------------------
2463
2464 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2465 {
2466     void* ptr;
2467
2468     if (wxPySwigInstance_Check(source) &&
2469         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2470         return true;
2471
2472     PyErr_Clear();
2473     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2474         return true;
2475
2476     return false;
2477 }
2478
2479 bool wxSize_helper(PyObject* source, wxSize** obj)
2480 {
2481     if (source == Py_None) {
2482         **obj = wxSize(-1,-1);
2483         return true;
2484     }
2485     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2486 }
2487
2488
2489 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2490 {
2491     if (source == Py_None) {
2492         **obj = wxPoint(-1,-1);
2493         return true;
2494     }
2495     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2496 }
2497
2498
2499
2500 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2501
2502     if (source == Py_None) {
2503         **obj = wxRealPoint(-1,-1);
2504         return true;
2505     }
2506
2507     // If source is an object instance then it may already be the right type
2508     if (wxPySwigInstance_Check(source)) {
2509         wxRealPoint* ptr;
2510         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2511             goto error;
2512         *obj = ptr;
2513         return true;
2514     }
2515     // otherwise a 2-tuple of floats is expected
2516     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2517         PyObject* o1 = PySequence_GetItem(source, 0);
2518         PyObject* o2 = PySequence_GetItem(source, 1);
2519         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2520             Py_DECREF(o1);
2521             Py_DECREF(o2);
2522             goto error;
2523         }
2524         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2525         Py_DECREF(o1);
2526         Py_DECREF(o2);
2527         return true;
2528     }
2529
2530  error:
2531     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2532     return false;
2533 }
2534
2535
2536
2537 bool wxRect_helper(PyObject* source, wxRect** obj) {
2538
2539     if (source == Py_None) {
2540         **obj = wxRect(-1,-1,-1,-1);
2541         return true;
2542     }
2543
2544     // If source is an object instance then it may already be the right type
2545     if (wxPySwigInstance_Check(source)) {
2546         wxRect* ptr;
2547         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2548             goto error;
2549         *obj = ptr;
2550         return true;
2551     }
2552     // otherwise a 4-tuple of integers is expected
2553     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2554         PyObject* o1 = PySequence_GetItem(source, 0);
2555         PyObject* o2 = PySequence_GetItem(source, 1);
2556         PyObject* o3 = PySequence_GetItem(source, 2);
2557         PyObject* o4 = PySequence_GetItem(source, 3);
2558         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2559             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2560             Py_DECREF(o1);
2561             Py_DECREF(o2);
2562             Py_DECREF(o3);
2563             Py_DECREF(o4);
2564             goto error;
2565         }
2566         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2567                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2568         Py_DECREF(o1);
2569         Py_DECREF(o2);
2570         Py_DECREF(o3);
2571         Py_DECREF(o4);
2572         return true;
2573     }
2574
2575  error:
2576     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2577     return false;
2578 }
2579
2580
2581
2582 bool wxColour_helper(PyObject* source, wxColour** obj) {
2583
2584     if (source == Py_None) {
2585         **obj = wxNullColour;
2586         return true;
2587     }
2588
2589     // If source is an object instance then it may already be the right type
2590     if (wxPySwigInstance_Check(source)) {
2591         wxColour* ptr;
2592         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2593             goto error;
2594         *obj = ptr;
2595         return true;
2596     }
2597     // otherwise check for a string
2598     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2599         wxString spec = Py2wxString(source);
2600         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2601             long red, green, blue;
2602             red = green = blue = 0;
2603             spec.Mid(1,2).ToLong(&red,   16);
2604             spec.Mid(3,2).ToLong(&green, 16);
2605             spec.Mid(5,2).ToLong(&blue,  16);
2606
2607             **obj = wxColour(red, green, blue);
2608             return true;
2609         }
2610         else {                                       // it's a colour name
2611             **obj = wxColour(spec);
2612             return true;
2613         }
2614     }
2615     // last chance: 3-tuple of integers is expected
2616     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2617         PyObject* o1 = PySequence_GetItem(source, 0);
2618         PyObject* o2 = PySequence_GetItem(source, 1);
2619         PyObject* o3 = PySequence_GetItem(source, 2);
2620         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2621             Py_DECREF(o1);
2622             Py_DECREF(o2);
2623             Py_DECREF(o3);
2624             goto error;
2625         }
2626         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2627         Py_DECREF(o1);
2628         Py_DECREF(o2);
2629         Py_DECREF(o3);
2630         return true;
2631     }
2632
2633  error:
2634     PyErr_SetString(PyExc_TypeError,
2635                     "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
2636     return false;
2637 }
2638
2639
2640 bool wxColour_typecheck(PyObject* source) {
2641
2642     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2643         return true;
2644
2645     if (PyString_Check(source) || PyUnicode_Check(source))
2646         return true;
2647
2648     return false;
2649 }
2650
2651
2652
2653 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2654
2655     if (source == Py_None) {
2656         **obj = wxPoint2D(-1,-1);
2657         return true;
2658     }
2659
2660     // If source is an object instance then it may already be the right type
2661     if (wxPySwigInstance_Check(source)) {
2662         wxPoint2D* ptr;
2663         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2664             goto error;
2665         *obj = ptr;
2666         return true;
2667     }
2668     // otherwise a length-2 sequence of floats is expected
2669     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2670         PyObject* o1 = PySequence_GetItem(source, 0);
2671         PyObject* o2 = PySequence_GetItem(source, 1);
2672         // This should really check for floats, not numbers -- but that would break code.
2673         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2674             Py_DECREF(o1);
2675             Py_DECREF(o2);
2676             goto error;
2677         }
2678         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2679         Py_DECREF(o1);
2680         Py_DECREF(o2);
2681         return true;
2682     }
2683  error:
2684     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2D object.");
2685     return false;
2686 }
2687
2688
2689 //----------------------------------------------------------------------
2690
2691 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
2692
2693     PyObject* list = PyList_New(0);
2694     for (size_t i=0; i < arr.GetCount(); i++) {
2695 #if wxUSE_UNICODE
2696         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2697 #else
2698         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2699 #endif
2700         PyList_Append(list, str);
2701         Py_DECREF(str);
2702     }
2703     return list;
2704 }
2705
2706
2707 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2708
2709     PyObject* list = PyList_New(0);
2710     for (size_t i=0; i < arr.GetCount(); i++) {
2711         PyObject* number = PyInt_FromLong(arr[i]);
2712         PyList_Append(list, number);
2713         Py_DECREF(number);
2714     }
2715     return list;
2716 }
2717
2718
2719 //----------------------------------------------------------------------
2720 //----------------------------------------------------------------------
2721
2722
2723
2724