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 BOOL WINAPI DllMain(
 101     HINSTANCE   hinstDLL,    // handle to DLL module
 102     DWORD       fdwReason,   // reason for calling function
 103     LPVOID      lpvReserved  // reserved
 104    )
 105 {
 106     // If wxPython is embedded in another wxWidgets app then
 107     // the instance has already been set.
 108     if (! wxGetInstance())
 109         wxSetInstance(hinstDLL);
 110     return true;
 111 }
 112 #endif
 113
 114 //----------------------------------------------------------------------
 115 // Classes for implementing the wxp main application shell.
 116 //----------------------------------------------------------------------
 117
 118 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 119
 120
 121 wxPyApp::wxPyApp() {
 122     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 123     m_startupComplete = false;
 124 }
 125
 126
 127 wxPyApp::~wxPyApp() {
 128 }
 129
 130
 131 // This one isn't acutally called...  We fake it with _BootstrapApp
 132 bool wxPyApp::OnInit() {
 133     return false;
 134 }
 135
 136
 137 int  wxPyApp::MainLoop() {
 138     int retval = 0;
 139
 140     DeletePendingObjects();
 141     bool initialized = wxTopLevelWindows.GetCount() != 0;
 142     if (initialized) {
 143         if ( m_exitOnFrameDelete == Later ) {
 144             m_exitOnFrameDelete = Yes;
 145         }
 146
 147         retval = wxApp::MainLoop();
 148         OnExit();
 149     }
 150     return retval;
 151 }
 152
 153
 154 bool wxPyApp::OnInitGui() {
 155     bool rval=true;
 156     wxApp::OnInitGui();  // in this case always call the base class version
 157     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 158     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 159         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 160     wxPyEndBlockThreads(blocked);
 161     return rval;
 162 }
 163
 164
 165 int wxPyApp::OnExit() {
 166     int rval=0;
 167     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 168     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 169         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 170     wxPyEndBlockThreads(blocked);
 171     wxApp::OnExit();  // in this case always call the base class version
 172     return rval;
 173 }
 174
 175
 176 #ifdef __WXDEBUG__
 177 void wxPyApp::OnAssert(const wxChar *file,
 178                      int line,
 179                      const wxChar *cond,
 180                      const wxChar *msg) {
 181
 182     // if we're not fully initialized then just log the error
 183     if (! m_startupComplete) {
 184         wxString buf;
 185         buf.Alloc(4096);
 186         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 187                    file, line, cond);
 188         if (msg != NULL) {
 189             buf += wxT(": ");
 190             buf += msg;
 191         }
 192         wxLogDebug(buf);
 193         return;
 194     }
 195
 196     // If the OnAssert is overloaded in the Python class then call it...
 197     bool found;
 198     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 199     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 200         PyObject* fso = wx2PyString(file);
 201         PyObject* cso = wx2PyString(file);
 202         PyObject* mso;
 203         if (msg != NULL)
 204             mso = wx2PyString(file);
 205         else {
 206             mso = Py_None; Py_INCREF(Py_None);
 207         }
 208         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 209         Py_DECREF(fso);
 210         Py_DECREF(cso);
 211         Py_DECREF(mso);
 212     }
 213     wxPyEndBlockThreads(blocked);
 214
 215     // ...otherwise do our own thing with it
 216     if (! found) {
 217         // ignore it?
 218         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 219             return;
 220
 221         // turn it into a Python exception?
 222         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 223             wxString buf;
 224             buf.Alloc(4096);
 225             buf.Printf(wxT("C++ assertion \"%s\" failed in %s(%d)"), cond, file, line);
 226             if (msg != NULL) {
 227                 buf += wxT(": ");
 228                 buf += msg;
 229             }
 230
 231             // set the exception
 232             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 233             PyObject* s = wx2PyString(buf);
 234             PyErr_SetObject(wxPyAssertionError, s);
 235             Py_DECREF(s);
 236             wxPyEndBlockThreads(blocked);
 237
 238             // Now when control returns to whatever API wrapper was called from
 239             // Python it should detect that an exception is set and will return
 240             // NULL, signalling the exception to Python.
 241         }
 242
 243         // Send it to the normal log destination, but only if
 244         // not _DIALOG because it will call this too
 245         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 246             wxString buf;
 247             buf.Alloc(4096);
 248             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 249                        file, line, cond);
 250             if (msg != NULL) {
 251                 buf += wxT(": ");
 252                 buf += msg;
 253             }
 254             wxLogDebug(buf);
 255         }
 256
 257         // do the normal wx assert dialog?
 258         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 259             wxApp::OnAssert(file, line, cond, msg);
 260     }
 261 }
 262 #endif
 263
 264     // For catching Apple Events
 265 void wxPyApp::MacOpenFile(const wxString &fileName)
 266 {
 267     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 268     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 269         PyObject* s = wx2PyString(fileName);
 270         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 271         Py_DECREF(s);
 272     }
 273     wxPyEndBlockThreads(blocked);
 274 }
 275
 276 void wxPyApp::MacPrintFile(const wxString &fileName)
 277 {
 278     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 279     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 280         PyObject* s = wx2PyString(fileName);
 281         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 282         Py_DECREF(s);
 283     }
 284     wxPyEndBlockThreads(blocked);
 285 }
 286
 287 void wxPyApp::MacNewFile()
 288 {
 289     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 290     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 291         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 292     wxPyEndBlockThreads(blocked);
 293 }
 294
 295 void wxPyApp::MacReopenApp()
 296 {
 297     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 298     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 299         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 300     wxPyEndBlockThreads(blocked);
 301 }
 302
 303
 304 /*static*/
 305 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 306 #ifdef __WXMAC__
 307     return s_macSupportPCMenuShortcuts;
 308 #else
 309     return 0;
 310 #endif
 311 }
 312
 313 /*static*/
 314 long wxPyApp::GetMacAboutMenuItemId() {
 315 #ifdef __WXMAC__
 316     return s_macAboutMenuItemId;
 317 #else
 318     return 0;
 319 #endif
 320 }
 321
 322 /*static*/
 323 long wxPyApp::GetMacPreferencesMenuItemId() {
 324 #ifdef __WXMAC__
 325     return s_macPreferencesMenuItemId;
 326 #else
 327     return 0;
 328 #endif
 329 }
 330
 331 /*static*/
 332 long wxPyApp::GetMacExitMenuItemId() {
 333 #ifdef __WXMAC__
 334     return s_macExitMenuItemId;
 335 #else
 336     return 0;
 337 #endif
 338 }
 339
 340 /*static*/
 341 wxString wxPyApp::GetMacHelpMenuTitleName() {
 342 #ifdef __WXMAC__
 343     return s_macHelpMenuTitleName;
 344 #else
 345     return wxEmptyString;
 346 #endif
 347 }
 348
 349 /*static*/
 350 void wxPyApp::SetMacSupportPCMenuShortcuts(bool val) {
 351 #ifdef __WXMAC__
 352     s_macSupportPCMenuShortcuts = val;
 353 #endif
 354 }
 355
 356 /*static*/
 357 void wxPyApp::SetMacAboutMenuItemId(long val) {
 358 #ifdef __WXMAC__
 359     s_macAboutMenuItemId = val;
 360 #endif
 361 }
 362
 363 /*static*/
 364 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 365 #ifdef __WXMAC__
 366     s_macPreferencesMenuItemId = val;
 367 #endif
 368 }
 369
 370 /*static*/
 371 void wxPyApp::SetMacExitMenuItemId(long val) {
 372 #ifdef __WXMAC__
 373     s_macExitMenuItemId = val;
 374 #endif
 375 }
 376
 377 /*static*/
 378 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 379 #ifdef __WXMAC__
 380     s_macHelpMenuTitleName = val;
 381 #endif
 382 }
 383
 384
 385 // This finishes the initialization of wxWindows and then calls the OnInit
 386 // that should be present in the derived (Python) class.
 387 void wxPyApp::_BootstrapApp()
 388 {
 389     static      bool haveInitialized = false;
 390     bool        result;
 391     wxPyBlock_t     blocked;
 392     PyObject*   retval = NULL;
 393     PyObject*   pyint  = NULL;
 394
 395
 396     // Only initialize wxWidgets once
 397     if (! haveInitialized) {
 398
 399         // Get any command-line args passed to this program from the sys module
 400         int    argc = 0;
 401         char** argv = NULL;
 402         blocked = wxPyBeginBlockThreads();
 403
 404         PyObject* sysargv = PySys_GetObject("argv");
 405         PyObject* executable = PySys_GetObject("executable");
 406
 407         if (sysargv != NULL && executable != NULL) {
 408             argc = PyList_Size(sysargv) + 1;
 409             argv = new char*[argc+1];
 410             argv[0] = PyString_AsString(executable);
 411             int x;
 412             for(x=1; x<argc; x++) {
 413                 PyObject *pyArg = PyList_GetItem(sysargv, x-1);
 414                 argv[x] = PyString_AsString(pyArg);
 415             }
 416             argv[argc] = NULL;
 417         }
 418         wxPyEndBlockThreads(blocked);
 419
 420         // Initialize wxWidgets
 421         result = wxEntryStart(argc, argv);
 422         delete [] argv;
 423
 424         blocked = wxPyBeginBlockThreads();
 425         if (! result)  {
 426             PyErr_SetString(PyExc_SystemError,
 427                             "wxEntryStart failed, unable to initialize wxWidgets!"
 428 #ifdef __WXGTK__
 429                             "  (Is DISPLAY set properly?)"
 430 #endif
 431                 );
 432             goto error;
 433         }
 434
 435         // On wxGTK the locale will be changed to match the system settings,
 436         // but Python before 2.4 needs to have LC_NUMERIC set to "C" in order
 437         // for the floating point conversions and such to work right.
 438 #if defined(__WXGTK__) && PY_VERSION_HEX < 0x02040000
 439         setlocale(LC_NUMERIC, "C");
 440 #endif
 441
 442         // The stock objects were all NULL when they were loaded into
 443         // SWIG generated proxies, so re-init those now...
 444         wxPy_ReinitStockObjects(3);
 445
 446         wxPyEndBlockThreads(blocked);
 447         haveInitialized = true;
 448     }
 449
 450     // It's now ok to generate exceptions for assertion errors.
 451     wxPythonApp->SetStartupComplete(true);
 452
 453     // Call the Python wxApp's OnInit function
 454     blocked = wxPyBeginBlockThreads();
 455     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 456
 457         PyObject* method = m_myInst.GetLastFound();
 458         PyObject* argTuple = PyTuple_New(0);
 459         retval = PyEval_CallObject(method, argTuple);
 460         Py_DECREF(argTuple);
 461         Py_DECREF(method);
 462         if (retval == NULL)
 463             goto error;
 464
 465         pyint = PyNumber_Int(retval);
 466         if (! pyint) {
 467             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 468             goto error;
 469         }
 470         result = PyInt_AS_LONG(pyint);
 471     }
 472     else {
 473         // Is it okay if there is no OnInit?  Probably so...
 474         result = true;
 475     }
 476
 477     if (! result) {
 478         PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
 479     }
 480
 481  error:
 482     Py_XDECREF(retval);
 483     Py_XDECREF(pyint);
 484
 485     wxPyEndBlockThreads(blocked);
 486 };
 487
 488 //---------------------------------------------------------------------
 489 //----------------------------------------------------------------------
 490
 491
 492 #if 0
 493 static char* wxPyCopyCString(const wxChar* src)
 494 {
 495     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 496     size_t len = strlen(buff);
 497     char*  dest = new char[len+1];
 498     strcpy(dest, buff);
 499     return dest;
 500 }
 501
 502 #if wxUSE_UNICODE
 503 static char* wxPyCopyCString(const char* src)   // we need a char version too
 504 {
 505     size_t len = strlen(src);
 506     char*  dest = new char[len+1];
 507     strcpy(dest, src);
 508     return dest;
 509 }
 510 #endif
 511
 512 static wxChar* wxPyCopyWString(const char *src)
 513 {
 514     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 515     wxString str(src, *wxConvCurrent);
 516     return copystring(str);
 517 }
 518
 519 #if wxUSE_UNICODE
 520 static wxChar* wxPyCopyWString(const wxChar *src)
 521 {
 522     return copystring(src);
 523 }
 524 #endif
 525 #endif
 526
 527
 528 inline const char* dropwx(const char* name) {
 529     if (name[0] == 'w' && name[1] == 'x')
 530         return name+2;
 531     else
 532         return name;
 533 }
 534
 535 //----------------------------------------------------------------------
 536
 537 // This function is called when the wx._core_ module is imported to do some
 538 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 539 // wxPyApp::_BootstrapApp
 540 void __wxPyPreStart(PyObject* moduleDict)
 541 {
 542
 543 #ifdef __WXMSW__
 544 //     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF
 545 //                     | _CRTDBG_CHECK_ALWAYS_DF
 546 //                     | _CRTDBG_DELAY_FREE_MEM_DF
 547 //         );
 548 #endif
 549
 550 #ifdef WXP_WITH_THREAD
 551 #if wxPyUSE_GIL_STATE
 552     PyEval_InitThreads();
 553 #else
 554     PyEval_InitThreads();
 555     wxPyTStates = new wxPyThreadStateArray;
 556     wxPyTMutex = new wxMutex;
 557
 558     // Save the current (main) thread state in our array
 559     PyThreadState* tstate = wxPyBeginAllowThreads();
 560     wxPyEndAllowThreads(tstate);
 561 #endif
 562 #endif
 563
 564     // Ensure that the build options in the DLL (or whatever) match this build
 565     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 566
 567     // Init the stock objects to a non-NULL value so SWIG doesn't create them as None
 568     wxPy_ReinitStockObjects(1);
 569
 570     wxInitAllImageHandlers();
 571 }
 572
 573
 574
 575 void __wxPyCleanup() {
 576     wxPyDoingCleanup = true;
 577     if (wxPyDoCleanup) {
 578         wxPyDoCleanup = false;
 579         wxEntryCleanup();
 580     }
 581 #ifdef WXP_WITH_THREAD
 582 #if !wxPyUSE_GIL_STATE
 583     delete wxPyTMutex;
 584     wxPyTMutex = NULL;
 585     wxPyTStates->Empty();
 586     delete wxPyTStates;
 587     wxPyTStates = NULL;
 588 #endif
 589 #endif
 590 }
 591
 592
 593 // Save a reference to the dictionary of the wx._core module, and inject
 594 // a few more things into it.
 595 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 596 {
 597
 598     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 599         return NULL;
 600
 601     if (!PyDict_Check(wxPython_dict)) {
 602         PyErr_SetString(PyExc_TypeError,
 603                         "_wxPySetDictionary must have dictionary object!");
 604         return NULL;
 605     }
 606
 607     if (! wxPyPtrTypeMap)
 608         wxPyPtrTypeMap = PyDict_New();
 609     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 610
 611     // Create an exception object to use for wxASSERTions
 612     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 613                                             PyExc_AssertionError, NULL);
 614     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 615
 616     // Create an exception object to use when the app object hasn't been created yet
 617     wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
 618                                         PyExc_RuntimeError, NULL);
 619     PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
 620
 621
 622
 623 #ifdef __WXMOTIF__
 624 #define wxPlatform "__WXMOTIF__"
 625 #define wxPlatName "wxMotif"
 626 #endif
 627 #ifdef __WXX11__
 628 #define wxPlatform "__WXX11__"
 629 #define wxPlatName "wxX11"
 630 #endif
 631 #ifdef __WXGTK__
 632 #define wxPlatform "__WXGTK__"
 633 #define wxPlatName "wxGTK"
 634 #endif
 635 #ifdef __WXMSW__
 636 #define wxPlatform "__WXMSW__"
 637 #define wxPlatName "wxMSW"
 638 #endif
 639 #ifdef __WXMAC__
 640 #define wxPlatform "__WXMAC__"
 641 #define wxPlatName "wxMac"
 642 #endif
 643
 644 #ifdef __WXDEBUG__
 645     int wxdebug = 1;
 646 #else
 647     int wxdebug = 0;
 648 #endif
 649
 650     // These should be deprecated in favor of the PlatformInfo tuple built below...
 651     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 652     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 653     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 654
 655     // Make a tuple of strings that gives more info about the platform.
 656     PyObject* PlatInfo = PyList_New(0);
 657     PyObject* obj;
 658
 659 #define _AddInfoString(st) \
 660     obj = PyString_FromString(st); \
 661     PyList_Append(PlatInfo, obj); \
 662     Py_DECREF(obj)
 663
 664     _AddInfoString(wxPlatform);
 665     _AddInfoString(wxPlatName);
 666 #if wxUSE_UNICODE
 667     _AddInfoString("unicode");
 668 #else
 669     _AddInfoString("ansi");
 670 #endif
 671 #ifdef __WXGTK__
 672 #ifdef __WXGTK20__
 673     _AddInfoString("gtk2");
 674 #else
 675     _AddInfoString("gtk1");
 676 #endif
 677 #endif
 678 #ifdef __WXDEBUG__
 679     _AddInfoString("wx-assertions-on");
 680 #else
 681     _AddInfoString("wx-assertions-off");
 682 #endif
 683
 684 #undef _AddInfoString
 685
 686     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 687     Py_DECREF(PlatInfo);
 688     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 689
 690     RETURN_NONE();
 691 }
 692
 693
 694 //---------------------------------------------------------------------------
 695
 696 // Python's PyInstance_Check does not return True for instances of new-style
 697 // classes.  This should get close enough for both new and old classes but I
 698 // should re-evaluate the need for doing instance checks...
 699 bool wxPyInstance_Check(PyObject* obj) {
 700     return PyObject_HasAttrString(obj, "__class__") != 0;
 701 }
 702
 703
 704 // This one checks if the object is an instance of a SWIG proxy class (it has
 705 // a .this attribute)
 706 bool wxPySwigInstance_Check(PyObject* obj) {
 707     return PyObject_HasAttrString(obj, "this") != 0;
 708 }
 709
 710 //---------------------------------------------------------------------------
 711
 712 // The stock objects are no longer created when the wx._core_ module is
 713 // imported, but only after the app object has been created.  The
 714 // wxPy_ReinitStockObjects function will be called 3 times to pass the stock
 715 // objects though various stages of evolution:
 716 //
 717 //   pass 1: Set all the pointers to a non-NULL value so the Python proxy
 718 //           object will be created (otherwise SWIG will just use None.)
 719 //
 720 //   pass 2: After the module has been imported and the python proxys have
 721 //           been created, then set the __class__ to be _wxPyUnbornObject so
 722 //           it will catch any access to the object and will raise an exception.
 723 //
 724 //   pass 3: Finally, from BootstrapApp patch things up so the stock objects
 725 //           can be used.
 726
 727
 728 PyObject* __wxPyFixStockObjects(PyObject* /* self */, PyObject* args)
 729 {
 730     wxPy_ReinitStockObjects(2);
 731     RETURN_NONE();
 732 }
 733
 734
 735 static void rsoPass2(const char* name)
 736 {
 737     static PyObject* unbornObjectClass = NULL;
 738     PyObject* obj;
 739
 740     if (unbornObjectClass == NULL) {
 741         unbornObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyUnbornObject");
 742         Py_INCREF(unbornObjectClass);
 743     }
 744
 745     // Find the object instance
 746     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 747     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 748     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 749
 750     // Change its class
 751     PyObject_SetAttrString(obj, "__class__",  unbornObjectClass);
 752
 753 }
 754
 755 static void rsoPass3(const char* name, const char* classname, void* ptr)
 756 {
 757     PyObject* obj;
 758     PyObject* classobj;
 759     PyObject* ptrobj;
 760
 761     // Find the object instance
 762     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 763     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 764     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 765
 766     // Find the class object and put it back in the instance
 767     classobj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(classname));
 768     wxCHECK_RET(classobj != NULL, wxT("Unable to find stock class object"));
 769     PyObject_SetAttrString(obj, "__class__",  classobj);
 770
 771     // Rebuild the .this swigified pointer with the new value of the C++ pointer
 772     ptrobj = wxPyMakeSwigPtr(ptr, wxString(classname, *wxConvCurrent));
 773     PyObject_SetAttrString(obj, "this", ptrobj);
 774     Py_DECREF(ptrobj);
 775 }
 776
 777
 778
 779 void wxPy_ReinitStockObjects(int pass)
 780 {
 781
 782     // If there is already an App object then wxPython is probably embedded in
 783     // a wx C++ application, so there is no need to do all this.
 784     static bool embedded = false;
 785     if ((pass == 1 || pass == 2) && wxTheApp) {
 786         embedded = true;
 787         return;
 788     }
 789     if (pass == 3 && embedded)
 790         return;
 791
 792
 793 #define REINITOBJ(name, classname) \
 794     if (pass == 1) { name = (classname*)0xC0C0C0C0; } \
 795     else if (pass == 2) { rsoPass2(#name); } \
 796     else if (pass == 3) { rsoPass3(#name, #classname, (void*)name); }
 797
 798
 799 #define REINITOBJ2(name, classname) \
 800     if (pass == 1) { } \
 801     else if (pass == 2) { rsoPass2(#name); } \
 802     else if (pass == 3) { rsoPass3(#name, #classname, (void*)&name); }
 803
 804
 805     REINITOBJ(wxNORMAL_FONT, wxFont);
 806     REINITOBJ(wxSMALL_FONT, wxFont);
 807     REINITOBJ(wxITALIC_FONT, wxFont);
 808     REINITOBJ(wxSWISS_FONT, wxFont);
 809
 810     REINITOBJ(wxRED_PEN, wxPen);
 811     REINITOBJ(wxCYAN_PEN, wxPen);
 812     REINITOBJ(wxGREEN_PEN, wxPen);
 813     REINITOBJ(wxBLACK_PEN, wxPen);
 814     REINITOBJ(wxWHITE_PEN, wxPen);
 815     REINITOBJ(wxTRANSPARENT_PEN, wxPen);
 816     REINITOBJ(wxBLACK_DASHED_PEN, wxPen);
 817     REINITOBJ(wxGREY_PEN, wxPen);
 818     REINITOBJ(wxMEDIUM_GREY_PEN, wxPen);
 819     REINITOBJ(wxLIGHT_GREY_PEN, wxPen);
 820
 821     REINITOBJ(wxBLUE_BRUSH, wxBrush);
 822     REINITOBJ(wxGREEN_BRUSH, wxBrush);
 823     REINITOBJ(wxWHITE_BRUSH, wxBrush);
 824     REINITOBJ(wxBLACK_BRUSH, wxBrush);
 825     REINITOBJ(wxTRANSPARENT_BRUSH, wxBrush);
 826     REINITOBJ(wxCYAN_BRUSH, wxBrush);
 827     REINITOBJ(wxRED_BRUSH, wxBrush);
 828     REINITOBJ(wxGREY_BRUSH, wxBrush);
 829     REINITOBJ(wxMEDIUM_GREY_BRUSH, wxBrush);
 830     REINITOBJ(wxLIGHT_GREY_BRUSH, wxBrush);
 831
 832     REINITOBJ(wxBLACK, wxColour);
 833     REINITOBJ(wxWHITE, wxColour);
 834     REINITOBJ(wxRED, wxColour);
 835     REINITOBJ(wxBLUE, wxColour);
 836     REINITOBJ(wxGREEN, wxColour);
 837     REINITOBJ(wxCYAN, wxColour);
 838     REINITOBJ(wxLIGHT_GREY, wxColour);
 839
 840     REINITOBJ(wxSTANDARD_CURSOR, wxCursor);
 841     REINITOBJ(wxHOURGLASS_CURSOR, wxCursor);
 842     REINITOBJ(wxCROSS_CURSOR, wxCursor);
 843
 844     REINITOBJ2(wxNullBitmap, wxBitmap);
 845     REINITOBJ2(wxNullIcon, wxIcon);
 846     REINITOBJ2(wxNullCursor, wxCursor);
 847     REINITOBJ2(wxNullPen, wxPen);
 848     REINITOBJ2(wxNullBrush, wxBrush);
 849     REINITOBJ2(wxNullPalette, wxPalette);
 850     REINITOBJ2(wxNullFont, wxFont);
 851     REINITOBJ2(wxNullColour, wxColour);
 852
 853     REINITOBJ(wxTheFontList, wxFontList);
 854     REINITOBJ(wxThePenList, wxPenList);
 855     REINITOBJ(wxTheBrushList, wxBrushList);
 856     REINITOBJ(wxTheColourDatabase, wxColourDatabase);
 857
 858
 859     REINITOBJ2(wxDefaultValidator, wxValidator);
 860     REINITOBJ2(wxNullImage, wxImage);
 861     REINITOBJ2(wxNullAcceleratorTable, wxAcceleratorTable);
 862
 863 #undef REINITOBJ
 864 #undef REINITOBJ2
 865 }
 866
 867 //---------------------------------------------------------------------------
 868
 869 // Check for existence of a wxApp, setting an exception if there isn't one.
 870 // This doesn't need to aquire the GIL because it should only be called from
 871 // an %exception before the lock is released.
 872
 873 bool wxPyCheckForApp() {
 874     if (wxTheApp != NULL)
 875         return true;
 876     else {
 877         PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
 878         return false;
 879     }
 880 }
 881
 882 //---------------------------------------------------------------------------
 883
 884 void wxPyUserData_dtor(wxPyUserData* self) {
 885     if (! wxPyDoingCleanup) {
 886         wxPyBlock_t blocked = wxPyBeginBlockThreads();
 887         Py_DECREF(self->m_obj);
 888         self->m_obj = NULL;
 889         wxPyEndBlockThreads(blocked);
 890     }
 891 }
 892
 893
 894 void wxPyClientData_dtor(wxPyClientData* self) {
 895     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 896                                         // may have already garbage collected the object...
 897         if (self->m_incRef) {
 898             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 899             Py_DECREF(self->m_obj);
 900             wxPyEndBlockThreads(blocked);
 901         }
 902         self->m_obj = NULL;
 903     }
 904 }
 905
 906
 907
 908 // This is called when an OOR controled object is being destroyed.  Although
 909 // the C++ object is going away there is no way to force the Python object
 910 // (and all references to it) to die too.  This causes problems (crashes) in
 911 // wxPython when a python shadow object attempts to call a C++ method using
 912 // the now bogus pointer... So to try and prevent this we'll do a little black
 913 // magic and change the class of the python instance to a class that will
 914 // raise an exception for any attempt to call methods with it.  See
 915 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 916 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 917
 918     static PyObject* deadObjectClass = NULL;
 919
 920     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 921     if (deadObjectClass == NULL) {
 922         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 923         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 924         // will lead to a deadlock when it tries to aquire the GIL again.
 925         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 926         Py_INCREF(deadObjectClass);
 927     }
 928
 929
 930     // Only if there is more than one reference to the object and we are
 931     // holding the OOR reference:
 932     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
 933         // bool isInstance = wxPyInstance_Check(self->m_obj);
 934         // TODO same here
 935         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 936
 937         // Call __del__, if there is one.
 938         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 939         if (func) {
 940             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 941             Py_XDECREF(rv);
 942             Py_DECREF(func);
 943         }
 944         if (PyErr_Occurred())
 945             PyErr_Clear();      // just ignore it for now
 946
 947
 948         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 949         if (dict) {
 950             // Clear the instance's dictionary
 951             PyDict_Clear(dict);
 952
 953             // put the name of the old class into the instance, and then reset the
 954             // class to be the dead class.
 955             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 956             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 957             PyDict_SetItemString(dict, "_name", name);
 958             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 959             //Py_INCREF(deadObjectClass);
 960             Py_DECREF(klass);
 961             Py_DECREF(name);
 962         }
 963     }
 964
 965     // m_obj is DECREF'd in the base class dtor...
 966     wxPyEndBlockThreads(blocked);
 967 }
 968
 969
 970 //---------------------------------------------------------------------------
 971 // Stuff used by OOR to find the right wxPython class type to return and to
 972 // build it.
 973
 974
 975 // The pointer type map is used when the "pointer" type name generated by SWIG
 976 // is not the same as the shadow class name, for example wxPyTreeCtrl
 977 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 978 // so we'll just make it a Python dictionary in the wx module's namespace.
 979 // (See __wxSetDictionary)
 980 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 981     if (! wxPyPtrTypeMap)
 982         wxPyPtrTypeMap = PyDict_New();
 983     PyDict_SetItemString(wxPyPtrTypeMap,
 984                          (char*)commonName,
 985                          PyString_FromString((char*)ptrName));
 986 }
 987
 988
 989
 990
 991 PyObject*  wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
 992     PyObject* target = NULL;
 993     bool      isEvtHandler = false;
 994
 995     if (source) {
 996         // If it's derived from wxEvtHandler then there may
 997         // already be a pointer to a Python object that we can use
 998         // in the OOR data.
 999         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
1000             isEvtHandler = true;
1001             wxEvtHandler* eh = (wxEvtHandler*)source;
1002             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
1003             if (data) {
1004                 target = data->m_obj;
1005                 if (target)
1006                     Py_INCREF(target);
1007             }
1008         }
1009
1010         if (! target) {
1011             // Otherwise make it the old fashioned way by making a new shadow
1012             // object and putting this pointer in it.  Look up the class
1013             // heirarchy until we find a class name that is located in the
1014             // python module.
1015             const wxClassInfo* info   = source->GetClassInfo();
1016             wxString           name   = info->GetClassName();
1017             bool               exists = wxPyCheckSwigType(name);
1018             while (info && !exists) {
1019                 info = info->GetBaseClass1();
1020                 name = info->GetClassName();
1021                 exists = wxPyCheckSwigType(name);
1022             }
1023             if (info) {
1024                 target = wxPyConstructObject((void*)source, name, setThisOwn);
1025                 if (target && isEvtHandler)
1026                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
1027             } else {
1028                 wxString msg(wxT("wxPython class not found for "));
1029                 msg += source->GetClassInfo()->GetClassName();
1030                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
1031                 target = NULL;
1032             }
1033         }
1034     } else {  // source was NULL so return None.
1035         Py_INCREF(Py_None); target = Py_None;
1036     }
1037     return target;
1038 }
1039
1040
1041 PyObject*  wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
1042     PyObject* target = NULL;
1043
1044     if (source && wxIsKindOf(source, wxSizer)) {
1045         // If it's derived from wxSizer then there may already be a pointer to
1046         // a Python object that we can use in the OOR data.
1047         wxSizer* sz = (wxSizer*)source;
1048         wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
1049         if (data) {
1050             target = data->m_obj;
1051             if (target)
1052                 Py_INCREF(target);
1053         }
1054     }
1055     if (! target) {
1056         target = wxPyMake_wxObject(source, setThisOwn, false);
1057         if (target != Py_None)
1058             ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
1059     }
1060     return target;
1061 }
1062
1063
1064 //---------------------------------------------------------------------------
1065
1066
1067 #ifdef WXP_WITH_THREAD
1068 #if !wxPyUSE_GIL_STATE
1069
1070 inline
1071 unsigned long wxPyGetCurrentThreadId() {
1072     return wxThread::GetCurrentId();
1073 }
1074
1075 static wxPyThreadState gs_shutdownTState;
1076
1077 static
1078 wxPyThreadState* wxPyGetThreadState() {
1079     if (wxPyTMutex == NULL) // Python is shutting down...
1080         return &gs_shutdownTState;
1081
1082     unsigned long ctid = wxPyGetCurrentThreadId();
1083     wxPyThreadState* tstate = NULL;
1084
1085     wxPyTMutex->Lock();
1086     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1087         wxPyThreadState& info = wxPyTStates->Item(i);
1088         if (info.tid == ctid) {
1089             tstate = &info;
1090             break;
1091         }
1092     }
1093     wxPyTMutex->Unlock();
1094     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
1095     return tstate;
1096 }
1097
1098
1099 static
1100 void wxPySaveThreadState(PyThreadState* tstate) {
1101     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
1102         gs_shutdownTState.tstate = tstate;
1103         return;
1104     }
1105     unsigned long ctid = wxPyGetCurrentThreadId();
1106     wxPyTMutex->Lock();
1107     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1108         wxPyThreadState& info = wxPyTStates->Item(i);
1109         if (info.tid == ctid) {
1110 #if 0
1111             if (info.tstate != tstate)
1112                 wxLogMessage("*** tstate mismatch!???");
1113 #endif
1114             info.tstate = tstate;    // allow for transient tstates
1115             // Normally it will never change, but apparently COM callbacks
1116             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
1117             // tstate which will then be garbage the next time we try to use
1118             // it...
1119
1120             wxPyTMutex->Unlock();
1121             return;
1122         }
1123     }
1124     // not found, so add it...
1125     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
1126     wxPyTMutex->Unlock();
1127 }
1128
1129 #endif
1130 #endif
1131
1132
1133
1134 // Calls from Python to wxWindows code are wrapped in calls to these
1135 // functions:
1136
1137 PyThreadState* wxPyBeginAllowThreads() {
1138 #ifdef WXP_WITH_THREAD
1139     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1140 #if !wxPyUSE_GIL_STATE
1141     wxPySaveThreadState(saved);
1142 #endif
1143     return saved;
1144 #else
1145     return NULL;
1146 #endif
1147 }
1148
1149 void wxPyEndAllowThreads(PyThreadState* saved) {
1150 #ifdef WXP_WITH_THREAD
1151     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1152 #endif
1153 }
1154
1155
1156
1157 // Calls from wxWindows back to Python code, or even any PyObject
1158 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1159
1160 wxPyBlock_t wxPyBeginBlockThreads() {
1161 #ifdef WXP_WITH_THREAD
1162 #if wxPyUSE_GIL_STATE
1163     PyGILState_STATE state = PyGILState_Ensure();
1164     return state;
1165 #else
1166     PyThreadState *current = _PyThreadState_Current;
1167
1168     // Only block if there wasn't already a tstate, or if the current one is
1169     // not the one we are wanting to change to.  This should prevent deadlock
1170     // if there are nested calls to wxPyBeginBlockThreads
1171     wxPyBlock_t blocked = false;
1172     wxPyThreadState* tstate = wxPyGetThreadState();
1173     if (current != tstate->tstate) {
1174         PyEval_RestoreThread(tstate->tstate);
1175         blocked = true;
1176     }
1177     return blocked;
1178 #endif
1179 #else
1180     return false;
1181 #endif
1182 }
1183
1184
1185 void wxPyEndBlockThreads(wxPyBlock_t blocked) {
1186 #ifdef WXP_WITH_THREAD
1187 #if wxPyUSE_GIL_STATE
1188     PyGILState_Release(blocked);
1189 #else
1190     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1191     // The value of blocked passed in needs to be the same as that returned
1192     // from wxPyBeginBlockThreads at the same nesting level.
1193     if ( blocked ) {
1194         PyEval_SaveThread();
1195     }
1196 #endif
1197 #endif
1198 }
1199
1200
1201 //---------------------------------------------------------------------------
1202 // wxPyInputStream and wxPyCBInputStream methods
1203
1204
1205 void wxPyInputStream::close() {
1206     /* do nothing for now */
1207 }
1208
1209 void wxPyInputStream::flush() {
1210     /* do nothing for now */
1211 }
1212
1213 bool wxPyInputStream::eof() {
1214     if (m_wxis)
1215         return m_wxis->Eof();
1216     else
1217         return true;
1218 }
1219
1220 wxPyInputStream::~wxPyInputStream() {
1221     if (m_wxis)
1222         delete m_wxis;
1223 }
1224
1225
1226
1227
1228 PyObject* wxPyInputStream::read(int size) {
1229     PyObject* obj = NULL;
1230     wxMemoryBuffer buf;
1231     const int BUFSIZE = 1024;
1232
1233     // check if we have a real wxInputStream to work with
1234     if (!m_wxis) {
1235         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1236         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1237         wxPyEndBlockThreads(blocked);
1238         return NULL;
1239     }
1240
1241     if (size < 0) {
1242         // read while bytes are available on the stream
1243         while ( m_wxis->CanRead() ) {
1244             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1245             buf.UngetAppendBuf(m_wxis->LastRead());
1246         }
1247
1248     } else {  // Read only size number of characters
1249         m_wxis->Read(buf.GetWriteBuf(size), size);
1250         buf.UngetWriteBuf(m_wxis->LastRead());
1251     }
1252
1253     // error check
1254     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1255     wxStreamError err = m_wxis->GetLastError();
1256     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1257         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1258     }
1259     else {
1260         // We use only strings for the streams, not unicode
1261         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1262     }
1263     wxPyEndBlockThreads(blocked);
1264     return obj;
1265 }
1266
1267
1268 PyObject* wxPyInputStream::readline(int size) {
1269     PyObject* obj = NULL;
1270     wxMemoryBuffer buf;
1271     int i;
1272     char ch;
1273
1274     // check if we have a real wxInputStream to work with
1275     if (!m_wxis) {
1276         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1277         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1278         wxPyEndBlockThreads(blocked);
1279         return NULL;
1280     }
1281
1282     // read until \n or byte limit reached
1283     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1284         ch = m_wxis->GetC();
1285         buf.AppendByte(ch);
1286     }
1287
1288     // errorcheck
1289     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1290     wxStreamError err = m_wxis->GetLastError();
1291     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1292         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1293     }
1294     else {
1295         // We use only strings for the streams, not unicode
1296         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1297     }
1298     wxPyEndBlockThreads(blocked);
1299     return obj;
1300 }
1301
1302
1303 PyObject* wxPyInputStream::readlines(int sizehint) {
1304     PyObject* pylist;
1305
1306     // check if we have a real wxInputStream to work with
1307     if (!m_wxis) {
1308         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1309         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1310         wxPyEndBlockThreads(blocked);
1311         return NULL;
1312     }
1313
1314     // init list
1315     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1316     pylist = PyList_New(0);
1317     wxPyEndBlockThreads(blocked);
1318
1319     if (!pylist) {
1320         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1321         PyErr_NoMemory();
1322         wxPyEndBlockThreads(blocked);
1323         return NULL;
1324     }
1325
1326     // read sizehint bytes or until EOF
1327     int i;
1328     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1329         PyObject* s = this->readline();
1330         if (s == NULL) {
1331             wxPyBlock_t blocked = wxPyBeginBlockThreads();
1332             Py_DECREF(pylist);
1333             wxPyEndBlockThreads(blocked);
1334             return NULL;
1335         }
1336         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1337         PyList_Append(pylist, s);
1338         i += PyString_Size(s);
1339         wxPyEndBlockThreads(blocked);
1340     }
1341
1342     // error check
1343     wxStreamError err = m_wxis->GetLastError();
1344     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1345         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1346         Py_DECREF(pylist);
1347         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1348         wxPyEndBlockThreads(blocked);
1349         return NULL;
1350     }
1351
1352     return pylist;
1353 }
1354
1355
1356 void wxPyInputStream::seek(int offset, int whence) {
1357     if (m_wxis)
1358         m_wxis->SeekI(offset, wxSeekMode(whence));
1359 }
1360
1361 int wxPyInputStream::tell(){
1362     if (m_wxis)
1363         return m_wxis->TellI();
1364     else return 0;
1365 }
1366
1367
1368
1369
1370 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1371     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1372 {}
1373
1374 wxPyCBInputStream::wxPyCBInputStream(const wxPyCBInputStream& other)
1375 {
1376     m_read  = other.m_read;
1377     m_seek  = other.m_seek;
1378     m_tell  = other.m_tell;
1379     m_block = other.m_block;
1380     Py_INCREF(m_read);
1381     Py_INCREF(m_seek);
1382     Py_INCREF(m_tell);
1383 }
1384
1385
1386 wxPyCBInputStream::~wxPyCBInputStream() {
1387     wxPyBlock_t blocked;
1388     if (m_block) blocked = wxPyBeginBlockThreads();
1389     Py_XDECREF(m_read);
1390     Py_XDECREF(m_seek);
1391     Py_XDECREF(m_tell);
1392     if (m_block) wxPyEndBlockThreads(blocked);
1393 }
1394
1395
1396 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1397     wxPyBlock_t blocked;
1398     if (block) blocked = wxPyBeginBlockThreads();
1399
1400     PyObject* read = getMethod(py, "read");
1401     PyObject* seek = getMethod(py, "seek");
1402     PyObject* tell = getMethod(py, "tell");
1403
1404     if (!read) {
1405         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1406         Py_XDECREF(read);
1407         Py_XDECREF(seek);
1408         Py_XDECREF(tell);
1409         if (block) wxPyEndBlockThreads(blocked);
1410         return NULL;
1411     }
1412
1413     if (block) wxPyEndBlockThreads(blocked);
1414     return new wxPyCBInputStream(read, seek, tell, block);
1415 }
1416
1417
1418 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1419     return wxPyCBInputStream::create(py, block);
1420 }
1421
1422 wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other) {
1423     return new wxPyCBInputStream(*other);
1424 }
1425
1426 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1427     if (!PyObject_HasAttrString(py, name))
1428         return NULL;
1429     PyObject* o = PyObject_GetAttrString(py, name);
1430     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1431         Py_DECREF(o);
1432         return NULL;
1433     }
1434     return o;
1435 }
1436
1437
1438 wxFileOffset wxPyCBInputStream::GetLength() const {
1439     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1440     if (m_seek && m_tell) {
1441         wxFileOffset temp = self->OnSysTell();
1442         wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
1443         self->OnSysSeek(temp, wxFromStart);
1444         return ret;
1445     }
1446     else
1447         return wxInvalidOffset;
1448 }
1449
1450
1451 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1452     if (bufsize == 0)
1453         return 0;
1454
1455     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1456     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1457     PyObject* result = PyEval_CallObject(m_read, arglist);
1458     Py_DECREF(arglist);
1459
1460     size_t o = 0;
1461     if ((result != NULL) && PyString_Check(result)) {
1462         o = PyString_Size(result);
1463         if (o == 0)
1464             m_lasterror = wxSTREAM_EOF;
1465         if (o > bufsize)
1466             o = bufsize;
1467         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1468         Py_DECREF(result);
1469
1470     }
1471     else
1472         m_lasterror = wxSTREAM_READ_ERROR;
1473     wxPyEndBlockThreads(blocked);
1474     return o;
1475 }
1476
1477 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1478     m_lasterror = wxSTREAM_WRITE_ERROR;
1479     return 0;
1480 }
1481
1482
1483 wxFileOffset wxPyCBInputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
1484     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1485     PyObject* arglist = PyTuple_New(2);
1486
1487     if (sizeof(wxFileOffset) > sizeof(long))
1488         // wxFileOffset is a 64-bit value...
1489         PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
1490     else
1491         PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
1492
1493     PyTuple_SET_ITEM(arglist, 1, PyInt_FromLong(mode));
1494
1495
1496     PyObject* result = PyEval_CallObject(m_seek, arglist);
1497     Py_DECREF(arglist);
1498     Py_XDECREF(result);
1499     wxPyEndBlockThreads(blocked);
1500     return OnSysTell();
1501 }
1502
1503
1504 wxFileOffset wxPyCBInputStream::OnSysTell() const {
1505     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1506     PyObject* arglist = Py_BuildValue("()");
1507     PyObject* result = PyEval_CallObject(m_tell, arglist);
1508     Py_DECREF(arglist);
1509     wxFileOffset o = 0;
1510     if (result != NULL) {
1511         if (PyLong_Check(result))
1512             o = PyLong_AsLongLong(result);
1513         else
1514             o = PyInt_AsLong(result);
1515         Py_DECREF(result);
1516     };
1517     wxPyEndBlockThreads(blocked);
1518     return o;
1519 }
1520
1521 //----------------------------------------------------------------------
1522
1523 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1524
1525 wxPyCallback::wxPyCallback(PyObject* func) {
1526     m_func = func;
1527     Py_INCREF(m_func);
1528 }
1529
1530 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1531     m_func = other.m_func;
1532     Py_INCREF(m_func);
1533 }
1534
1535 wxPyCallback::~wxPyCallback() {
1536     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1537     Py_DECREF(m_func);
1538     wxPyEndBlockThreads(blocked);
1539 }
1540
1541
1542 #define wxPy_PRECALLINIT     "_preCallInit"
1543 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1544
1545 // This function is used for all events destined for Python event handlers.
1546 void wxPyCallback::EventThunker(wxEvent& event) {
1547     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1548     PyObject*       func = cb->m_func;
1549     PyObject*       result;
1550     PyObject*       arg;
1551     PyObject*       tuple;
1552     bool            checkSkip = false;
1553
1554     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1555     wxString className = event.GetClassInfo()->GetClassName();
1556
1557     // If the event is one of these types then pass the original
1558     // event object instead of the one passed to us.
1559     if ( className == wxT("wxPyEvent") ) {
1560         arg =       ((wxPyEvent*)&event)->GetSelf();
1561         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1562     }
1563     else if ( className == wxT("wxPyCommandEvent") ) {
1564         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1565         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1566     }
1567     else {
1568         arg = wxPyConstructObject((void*)&event, className);
1569     }
1570
1571     if (!arg) {
1572         PyErr_Print();
1573     } else {
1574         // "intern" the pre/post method names to speed up the HasAttr
1575         static PyObject* s_preName  = NULL;
1576         static PyObject* s_postName = NULL;
1577         if (s_preName == NULL) {
1578             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1579             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1580         }
1581
1582         // Check if the event object needs some preinitialization
1583         if (PyObject_HasAttr(arg, s_preName)) {
1584             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1585             if ( result ) {
1586                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1587                 PyErr_Clear();       // Just in case...
1588             } else {
1589                 PyErr_Print();
1590             }
1591         }
1592
1593         // Call the event handler, passing the event object
1594         tuple = PyTuple_New(1);
1595         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1596         result = PyEval_CallObject(func, tuple);
1597         if ( result ) {
1598             Py_DECREF(result);   // result is ignored, but we still need to decref it
1599             PyErr_Clear();       // Just in case...
1600         } else {
1601             PyErr_Print();
1602         }
1603
1604         // Check if the event object needs some post cleanup
1605         if (PyObject_HasAttr(arg, s_postName)) {
1606             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1607             if ( result ) {
1608                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1609                 PyErr_Clear();       // Just in case...
1610             } else {
1611                 PyErr_Print();
1612             }
1613         }
1614
1615         if ( checkSkip ) {
1616             // if the event object was one of our special types and
1617             // it had been cloned, then we need to extract the Skipped
1618             // value from the original and set it in the clone.
1619             result = PyObject_CallMethod(arg, "GetSkipped", "");
1620             if ( result ) {
1621                 event.Skip(PyInt_AsLong(result));
1622                 Py_DECREF(result);
1623             } else {
1624                 PyErr_Print();
1625             }
1626         }
1627         Py_DECREF(tuple);
1628     }
1629     wxPyEndBlockThreads(blocked);
1630 }
1631
1632
1633 //----------------------------------------------------------------------
1634
1635 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1636       m_lastFound = NULL;
1637       m_self = other.m_self;
1638       m_class = other.m_class;
1639       if (m_self) {
1640           Py_INCREF(m_self);
1641           Py_INCREF(m_class);
1642       }
1643 }
1644
1645
1646 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1647     m_self = self;
1648     m_class = klass;
1649     m_incRef = incref;
1650     if (incref) {
1651         Py_INCREF(m_self);
1652         Py_INCREF(m_class);
1653     }
1654 }
1655
1656
1657 #if PYTHON_API_VERSION >= 1011
1658
1659 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1660 // in which the method was defined.  Starting with 2.2 it returns
1661 // "class that asked for the method" which seems totally bogus to me
1662 // but apprently it fixes some obscure problem waiting to happen in
1663 // Python.  Since the API was not documented Guido and the gang felt
1664 // safe in changing it.  Needless to say that totally screwed up the
1665 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1666 // code to find the class where the method is actually defined...
1667
1668 static
1669 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1670 {
1671     int i, n;
1672
1673     if (PyType_Check(klass)) {      // new style classes
1674         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1675         PyTypeObject* type = (PyTypeObject*)klass;
1676         PyObject *mro, *res, *base, *dict;
1677         /* Look in tp_dict of types in MRO */
1678         mro = type->tp_mro;
1679         assert(PyTuple_Check(mro));
1680         n = PyTuple_GET_SIZE(mro);
1681         for (i = 0; i < n; i++) {
1682             base = PyTuple_GET_ITEM(mro, i);
1683             if (PyClass_Check(base))
1684                 dict = ((PyClassObject *)base)->cl_dict;
1685             else {
1686                 assert(PyType_Check(base));
1687                 dict = ((PyTypeObject *)base)->tp_dict;
1688             }
1689             assert(dict && PyDict_Check(dict));
1690             res = PyDict_GetItem(dict, name);
1691             if (res != NULL)
1692                 return base;
1693         }
1694         return NULL;
1695     }
1696
1697     else if (PyClass_Check(klass)) { // old style classes
1698         // This code is borrowed/adapted from class_lookup in classobject.c
1699         PyClassObject* cp = (PyClassObject*)klass;
1700         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1701         if (value != NULL) {
1702             return (PyObject*)cp;
1703         }
1704         n = PyTuple_Size(cp->cl_bases);
1705         for (i = 0; i < n; i++) {
1706             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1707             PyObject *v = PyFindClassWithAttr(base, name);
1708             if (v != NULL)
1709                 return v;
1710         }
1711         return NULL;
1712     }
1713     return NULL;
1714 }
1715 #endif
1716
1717
1718 static
1719 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
1720 {
1721     PyObject* mgc = PyMethod_GET_CLASS(method);
1722
1723 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1724     return mgc;
1725 #else                             // 2.2 and after, the hard way...
1726
1727     PyObject* nameo = PyString_FromString(name);
1728     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
1729     Py_DECREF(nameo);
1730     return klass;
1731 #endif
1732 }
1733
1734
1735
1736 bool wxPyCallbackHelper::findCallback(const char* name) const {
1737     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1738     self->m_lastFound = NULL;
1739
1740     // If the object (m_self) has an attibute of the given name...
1741     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
1742         PyObject *method, *klass;
1743         method = PyObject_GetAttrString(m_self, (char*)name);
1744
1745         // ...and if that attribute is a method, and if that method's class is
1746         // not from a base class...
1747         if (PyMethod_Check(method) &&
1748             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
1749             ((klass == m_class) || PyObject_IsSubclass(klass, m_class))) {
1750
1751             // ...then we'll save a pointer to the method so callCallback can call it.
1752             self->m_lastFound = method;
1753         }
1754         else {
1755             Py_DECREF(method);
1756         }
1757     }
1758     return m_lastFound != NULL;
1759 }
1760
1761
1762 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1763     PyObject*   result;
1764     int         retval = false;
1765
1766     result = callCallbackObj(argTuple);
1767     if (result) {                       // Assumes an integer return type...
1768         retval = PyInt_AsLong(result);
1769         Py_DECREF(result);
1770         PyErr_Clear();                  // forget about it if it's not...
1771     }
1772     return retval;
1773 }
1774
1775 // Invoke the Python callable object, returning the raw PyObject return
1776 // value.  Caller should DECREF the return value and also manage the GIL.
1777 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1778     PyObject* result;
1779
1780     // Save a copy of the pointer in case the callback generates another
1781     // callback.  In that case m_lastFound will have a different value when
1782     // it gets back here...
1783     PyObject* method = m_lastFound;
1784
1785     result = PyEval_CallObject(method, argTuple);
1786     Py_DECREF(argTuple);
1787     Py_DECREF(method);
1788     if (!result) {
1789         PyErr_Print();
1790     }
1791     return result;
1792 }
1793
1794
1795 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1796     cbh.setSelf(self, klass, incref);
1797 }
1798
1799 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
1800     return cbh.findCallback(name);
1801 }
1802
1803 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1804     return cbh.callCallback(argTuple);
1805 }
1806
1807 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1808     return cbh.callCallbackObj(argTuple);
1809 }
1810
1811
1812 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1813     if (cbh->m_incRef) {
1814         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1815         Py_XDECREF(cbh->m_self);
1816         Py_XDECREF(cbh->m_class);
1817         wxPyEndBlockThreads(blocked);
1818     }
1819 }
1820
1821 //---------------------------------------------------------------------------
1822 //---------------------------------------------------------------------------
1823 // These event classes can be derived from in Python and passed through the event
1824 // system without losing anything.  They do this by keeping a reference to
1825 // themselves and some special case handling in wxPyCallback::EventThunker.
1826
1827
1828 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1829     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1830     //Py_INCREF(m_self);        //      circular loops...
1831     m_cloned = false;
1832 }
1833
1834 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1835     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1836     if (m_cloned)
1837         Py_DECREF(m_self);
1838     wxPyEndBlockThreads(blocked);
1839 }
1840
1841 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1842     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1843     if (m_cloned)
1844         Py_DECREF(m_self);
1845     m_self = self;
1846     if (clone) {
1847         Py_INCREF(m_self);
1848         m_cloned = true;
1849     }
1850     wxPyEndBlockThreads(blocked);
1851 }
1852
1853 PyObject* wxPyEvtSelfRef::GetSelf() const {
1854     Py_INCREF(m_self);
1855     return m_self;
1856 }
1857
1858
1859 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1860 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1861
1862
1863 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1864     : wxEvent(winid, commandType) {
1865 }
1866
1867
1868 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1869     : wxEvent(evt)
1870 {
1871     SetSelf(evt.m_self, true);
1872 }
1873
1874
1875 wxPyEvent::~wxPyEvent() {
1876 }
1877
1878
1879 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1880     : wxCommandEvent(commandType, id) {
1881 }
1882
1883
1884 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1885     : wxCommandEvent(evt)
1886 {
1887     SetSelf(evt.m_self, true);
1888 }
1889
1890
1891 wxPyCommandEvent::~wxPyCommandEvent() {
1892 }
1893
1894
1895
1896
1897
1898 //---------------------------------------------------------------------------
1899 //---------------------------------------------------------------------------
1900 // Convert a wxList to a Python List, only works for lists of wxObjects
1901
1902 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1903     wxList*     list = (wxList*)listbase;  // this is probably bad...
1904     PyObject*   pyList;
1905     PyObject*   pyObj;
1906     wxObject*   wxObj;
1907     wxNode*     node = list->GetFirst();
1908
1909     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1910     pyList = PyList_New(0);
1911     while (node) {
1912         wxObj = node->GetData();
1913         pyObj = wxPyMake_wxObject(wxObj,false);
1914         PyList_Append(pyList, pyObj);
1915         node = node->GetNext();
1916     }
1917     wxPyEndBlockThreads(blocked);
1918     return pyList;
1919 }
1920
1921 //----------------------------------------------------------------------
1922
1923 long wxPyGetWinHandle(wxWindow* win) {
1924
1925 #ifdef __WXMSW__
1926     return (long)win->GetHandle();
1927 #endif
1928
1929 #if defined(__WXGTK__) || defined(__WXX11)
1930     return (long)GetXWindow(win);
1931 #endif
1932
1933 #ifdef __WXMAC__
1934     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
1935     return (long)win->GetHandle();
1936 #endif
1937
1938     return 0;
1939 }
1940
1941 //----------------------------------------------------------------------
1942 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1943 // included in every file over and over again...
1944
1945 wxString* wxString_in_helper(PyObject* source) {
1946     wxString* target = NULL;
1947
1948     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1949         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
1950         return NULL;
1951     }
1952 #if wxUSE_UNICODE
1953     PyObject* uni = source;
1954     if (PyString_Check(source)) {
1955         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1956         if (PyErr_Occurred()) return NULL;
1957     }
1958     target = new wxString();
1959     size_t len = PyUnicode_GET_SIZE(uni);
1960     if (len) {
1961         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target->GetWriteBuf(len), len);
1962         target->UngetWriteBuf(len);
1963     }
1964
1965     if (PyString_Check(source))
1966         Py_DECREF(uni);
1967 #else
1968     // Convert to a string object if it isn't already, then to wxString
1969     PyObject* str = source;
1970     if (PyUnicode_Check(source)) {
1971         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1972         if (PyErr_Occurred()) return NULL;
1973     }
1974     else if (!PyString_Check(source)) {
1975         str = PyObject_Str(source);
1976         if (PyErr_Occurred()) return NULL;
1977     }
1978     char* tmpPtr; int tmpSize;
1979     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1980     target = new wxString(tmpPtr, tmpSize);
1981
1982     if (!PyString_Check(source))
1983         Py_DECREF(str);
1984 #endif // wxUSE_UNICODE
1985
1986     return target;
1987 }
1988
1989
1990 // Similar to above except doesn't use "new" and doesn't set an exception
1991 wxString Py2wxString(PyObject* source)
1992 {
1993     wxString target;
1994
1995 #if wxUSE_UNICODE
1996     // Convert to a unicode object, if not already, then to a wxString
1997     PyObject* uni = source;
1998     if (!PyUnicode_Check(source)) {
1999         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
2000         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
2001     }
2002     size_t len = PyUnicode_GET_SIZE(uni);
2003     if (len) {
2004         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target.GetWriteBuf(len), len);
2005         target.UngetWriteBuf();
2006     }
2007
2008     if (!PyUnicode_Check(source))
2009         Py_DECREF(uni);
2010 #else
2011     // Convert to a string object if it isn't already, then to wxString
2012     PyObject* str = source;
2013     if (PyUnicode_Check(source)) {
2014         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
2015         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
2016     }
2017     else if (!PyString_Check(source)) {
2018         str = PyObject_Str(source);
2019         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
2020     }
2021     char* tmpPtr; int tmpSize;
2022     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
2023     target = wxString(tmpPtr, tmpSize);
2024
2025     if (!PyString_Check(source))
2026         Py_DECREF(str);
2027 #endif // wxUSE_UNICODE
2028
2029     return target;
2030 }
2031
2032
2033 // Make either a Python String or Unicode object, depending on build mode
2034 PyObject* wx2PyString(const wxString& src)
2035 {
2036     PyObject* str;
2037 #if wxUSE_UNICODE
2038     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
2039 #else
2040     str = PyString_FromStringAndSize(src.c_str(), src.Len());
2041 #endif
2042     return str;
2043 }
2044
2045
2046
2047 void wxSetDefaultPyEncoding(const char* encoding)
2048 {
2049     strncpy(wxPyDefaultEncoding, encoding, DEFAULTENCODING_SIZE);
2050 }
2051
2052 const char* wxGetDefaultPyEncoding()
2053 {
2054     return wxPyDefaultEncoding;
2055 }
2056
2057 //----------------------------------------------------------------------
2058
2059
2060 byte* byte_LIST_helper(PyObject* source) {
2061     if (!PyList_Check(source)) {
2062         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2063         return NULL;
2064     }
2065     int count = PyList_Size(source);
2066     byte* temp = new byte[count];
2067     if (! temp) {
2068         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2069         return NULL;
2070     }
2071     for (int x=0; x<count; x++) {
2072         PyObject* o = PyList_GetItem(source, x);
2073         if (! PyInt_Check(o)) {
2074             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2075             return NULL;
2076         }
2077         temp[x] = (byte)PyInt_AsLong(o);
2078     }
2079     return temp;
2080 }
2081
2082
2083 int* int_LIST_helper(PyObject* source) {
2084     if (!PyList_Check(source)) {
2085         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2086         return NULL;
2087     }
2088     int count = PyList_Size(source);
2089     int* temp = new int[count];
2090     if (! temp) {
2091         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2092         return NULL;
2093     }
2094     for (int x=0; x<count; x++) {
2095         PyObject* o = PyList_GetItem(source, x);
2096         if (! PyInt_Check(o)) {
2097             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2098             return NULL;
2099         }
2100         temp[x] = PyInt_AsLong(o);
2101     }
2102     return temp;
2103 }
2104
2105
2106 long* long_LIST_helper(PyObject* source) {
2107     if (!PyList_Check(source)) {
2108         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2109         return NULL;
2110     }
2111     int count = PyList_Size(source);
2112     long* temp = new long[count];
2113     if (! temp) {
2114         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2115         return NULL;
2116     }
2117     for (int x=0; x<count; x++) {
2118         PyObject* o = PyList_GetItem(source, x);
2119         if (! PyInt_Check(o)) {
2120             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2121             return NULL;
2122         }
2123         temp[x] = PyInt_AsLong(o);
2124     }
2125     return temp;
2126 }
2127
2128
2129 char** string_LIST_helper(PyObject* source) {
2130     if (!PyList_Check(source)) {
2131         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2132         return NULL;
2133     }
2134     int count = PyList_Size(source);
2135     char** temp = new char*[count];
2136     if (! temp) {
2137         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2138         return NULL;
2139     }
2140     for (int x=0; x<count; x++) {
2141         PyObject* o = PyList_GetItem(source, x);
2142         if (! PyString_Check(o)) {
2143             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2144             return NULL;
2145         }
2146         temp[x] = PyString_AsString(o);
2147     }
2148     return temp;
2149 }
2150
2151 //--------------------------------
2152 // Part of patch from Tim Hochberg
2153 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
2154     if (PyInt_Check(o1) && PyInt_Check(o2)) {
2155         point->x = PyInt_AS_LONG(o1);
2156         point->y = PyInt_AS_LONG(o2);
2157         return true;
2158     }
2159     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
2160         point->x = (int)PyFloat_AS_DOUBLE(o1);
2161         point->y = (int)PyFloat_AS_DOUBLE(o2);
2162         return true;
2163     }
2164     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {  // TODO: Why???
2165         // Disallow instances because they can cause havok
2166         return false;
2167     }
2168     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
2169         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
2170         point->x = PyInt_AsLong(o1);
2171         point->y = PyInt_AsLong(o2);
2172         return true;
2173     }
2174     return false;
2175 }
2176
2177
2178 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
2179     // Putting all of the declarations here allows
2180     // us to put the error handling all in one place.
2181     int x;
2182     wxPoint* temp;
2183     PyObject *o, *o1, *o2;
2184     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2185
2186     if (!PySequence_Check(source)) {
2187         goto error0;
2188     }
2189
2190     // The length of the sequence is returned in count.
2191     *count = PySequence_Length(source);
2192     if (*count < 0) {
2193         goto error0;
2194     }
2195
2196     temp = new wxPoint[*count];
2197     if (!temp) {
2198         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2199         return NULL;
2200     }
2201     for (x=0; x<*count; x++) {
2202         // Get an item: try fast way first.
2203         if (isFast) {
2204             o = PySequence_Fast_GET_ITEM(source, x);
2205         }
2206         else {
2207             o = PySequence_GetItem(source, x);
2208             if (o == NULL) {
2209                 goto error1;
2210             }
2211         }
2212
2213         // Convert o to wxPoint.
2214         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2215             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2216             o1 = PySequence_Fast_GET_ITEM(o, 0);
2217             o2 = PySequence_Fast_GET_ITEM(o, 1);
2218             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2219                 goto error2;
2220             }
2221         }
2222         else if (wxPySwigInstance_Check(o)) {
2223             wxPoint* pt;
2224             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2225                 goto error2;
2226             }
2227             temp[x] = *pt;
2228         }
2229         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2230             o1 = PySequence_GetItem(o, 0);
2231             o2 = PySequence_GetItem(o, 1);
2232             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2233                 goto error3;
2234             }
2235             Py_DECREF(o1);
2236             Py_DECREF(o2);
2237         }
2238         else {
2239             goto error2;
2240         }
2241         // Clean up.
2242         if (!isFast)
2243             Py_DECREF(o);
2244     }
2245     return temp;
2246
2247 error3:
2248     Py_DECREF(o1);
2249     Py_DECREF(o2);
2250 error2:
2251     if (!isFast)
2252         Py_DECREF(o);
2253 error1:
2254     delete [] temp;
2255 error0:
2256     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2257     return NULL;
2258 }
2259 // end of patch
2260 //------------------------------
2261
2262
2263 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2264     if (!PyList_Check(source)) {
2265         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2266         return NULL;
2267     }
2268     int count = PyList_Size(source);
2269     wxBitmap** temp = new wxBitmap*[count];
2270     if (! temp) {
2271         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2272         return NULL;
2273     }
2274     for (int x=0; x<count; x++) {
2275         PyObject* o = PyList_GetItem(source, x);
2276         if (wxPySwigInstance_Check(o)) {
2277             wxBitmap*    pt;
2278             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2279                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2280                 return NULL;
2281             }
2282             temp[x] = pt;
2283         }
2284         else {
2285             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2286             return NULL;
2287         }
2288     }
2289     return temp;
2290 }
2291
2292
2293
2294 wxString* wxString_LIST_helper(PyObject* source) {
2295     if (!PyList_Check(source)) {
2296         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2297         return NULL;
2298     }
2299     int count = PyList_Size(source);
2300     wxString* temp = new wxString[count];
2301     if (! temp) {
2302         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2303         return NULL;
2304     }
2305     for (int x=0; x<count; x++) {
2306         PyObject* o = PyList_GetItem(source, x);
2307 #if PYTHON_API_VERSION >= 1009
2308         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2309             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2310             return NULL;
2311         }
2312 #else
2313         if (! PyString_Check(o)) {
2314             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2315             return NULL;
2316         }
2317 #endif
2318
2319         wxString* pStr = wxString_in_helper(o);
2320         temp[x] = *pStr;
2321         delete pStr;
2322     }
2323     return temp;
2324 }
2325
2326
2327 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2328     if (!PyList_Check(source)) {
2329         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2330         return NULL;
2331     }
2332     int count                = PyList_Size(source);
2333     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2334     if (! temp) {
2335         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2336         return NULL;
2337     }
2338     for (int x=0; x<count; x++) {
2339         PyObject* o = PyList_GetItem(source, x);
2340         if (wxPySwigInstance_Check(o)) {
2341             wxAcceleratorEntry* ae;
2342             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2343                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2344                 return NULL;
2345             }
2346             temp[x] = *ae;
2347         }
2348         else if (PyTuple_Check(o)) {
2349             PyObject* o1 = PyTuple_GetItem(o, 0);
2350             PyObject* o2 = PyTuple_GetItem(o, 1);
2351             PyObject* o3 = PyTuple_GetItem(o, 2);
2352             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2353         }
2354         else {
2355             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2356             return NULL;
2357         }
2358     }
2359     return temp;
2360 }
2361
2362
2363 wxPen** wxPen_LIST_helper(PyObject* source) {
2364     if (!PyList_Check(source)) {
2365         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2366         return NULL;
2367     }
2368     int count = PyList_Size(source);
2369     wxPen** temp = new wxPen*[count];
2370     if (!temp) {
2371         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2372         return NULL;
2373     }
2374     for (int x=0; x<count; x++) {
2375         PyObject* o = PyList_GetItem(source, x);
2376         if (wxPySwigInstance_Check(o)) {
2377             wxPen*  pt;
2378             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2379                 delete temp;
2380                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2381                 return NULL;
2382             }
2383             temp[x] = pt;
2384         }
2385         else {
2386             delete temp;
2387             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2388             return NULL;
2389         }
2390     }
2391     return temp;
2392 }
2393
2394
2395 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2396     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2397     PyObject *o1, *o2;
2398
2399     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2400         return false;
2401
2402     if (isFast) {
2403         o1 = PySequence_Fast_GET_ITEM(source, 0);
2404         o2 = PySequence_Fast_GET_ITEM(source, 1);
2405     }
2406     else {
2407         o1 = PySequence_GetItem(source, 0);
2408         o2 = PySequence_GetItem(source, 1);
2409     }
2410
2411     *i1 = PyInt_AsLong(o1);
2412     *i2 = PyInt_AsLong(o2);
2413
2414     if (! isFast) {
2415         Py_DECREF(o1);
2416         Py_DECREF(o2);
2417     }
2418     return true;
2419 }
2420
2421
2422 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2423     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2424     PyObject *o1, *o2, *o3, *o4;
2425
2426     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2427         return false;
2428
2429     if (isFast) {
2430         o1 = PySequence_Fast_GET_ITEM(source, 0);
2431         o2 = PySequence_Fast_GET_ITEM(source, 1);
2432         o3 = PySequence_Fast_GET_ITEM(source, 2);
2433         o4 = PySequence_Fast_GET_ITEM(source, 3);
2434     }
2435     else {
2436         o1 = PySequence_GetItem(source, 0);
2437         o2 = PySequence_GetItem(source, 1);
2438         o3 = PySequence_GetItem(source, 2);
2439         o4 = PySequence_GetItem(source, 3);
2440     }
2441
2442     *i1 = PyInt_AsLong(o1);
2443     *i2 = PyInt_AsLong(o2);
2444     *i3 = PyInt_AsLong(o3);
2445     *i4 = PyInt_AsLong(o4);
2446
2447     if (! isFast) {
2448         Py_DECREF(o1);
2449         Py_DECREF(o2);
2450         Py_DECREF(o3);
2451         Py_DECREF(o4);
2452     }
2453     return true;
2454 }
2455
2456
2457 //----------------------------------------------------------------------
2458
2459 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2460 {
2461     void* ptr;
2462
2463     if (wxPySwigInstance_Check(source) &&
2464         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2465         return true;
2466
2467     PyErr_Clear();
2468     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2469         return true;
2470
2471     return false;
2472 }
2473
2474 bool wxSize_helper(PyObject* source, wxSize** obj)
2475 {
2476     if (source == Py_None) {
2477         **obj = wxSize(-1,-1);
2478         return true;
2479     }
2480     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2481 }
2482
2483
2484 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2485 {
2486     if (source == Py_None) {
2487         **obj = wxPoint(-1,-1);
2488         return true;
2489     }
2490     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2491 }
2492
2493
2494
2495 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2496
2497     if (source == Py_None) {
2498         **obj = wxRealPoint(-1,-1);
2499         return true;
2500     }
2501
2502     // If source is an object instance then it may already be the right type
2503     if (wxPySwigInstance_Check(source)) {
2504         wxRealPoint* ptr;
2505         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2506             goto error;
2507         *obj = ptr;
2508         return true;
2509     }
2510     // otherwise a 2-tuple of floats is expected
2511     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2512         PyObject* o1 = PySequence_GetItem(source, 0);
2513         PyObject* o2 = PySequence_GetItem(source, 1);
2514         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2515             Py_DECREF(o1);
2516             Py_DECREF(o2);
2517             goto error;
2518         }
2519         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2520         Py_DECREF(o1);
2521         Py_DECREF(o2);
2522         return true;
2523     }
2524
2525  error:
2526     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2527     return false;
2528 }
2529
2530
2531
2532 bool wxRect_helper(PyObject* source, wxRect** obj) {
2533
2534     if (source == Py_None) {
2535         **obj = wxRect(-1,-1,-1,-1);
2536         return true;
2537     }
2538
2539     // If source is an object instance then it may already be the right type
2540     if (wxPySwigInstance_Check(source)) {
2541         wxRect* ptr;
2542         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2543             goto error;
2544         *obj = ptr;
2545         return true;
2546     }
2547     // otherwise a 4-tuple of integers is expected
2548     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2549         PyObject* o1 = PySequence_GetItem(source, 0);
2550         PyObject* o2 = PySequence_GetItem(source, 1);
2551         PyObject* o3 = PySequence_GetItem(source, 2);
2552         PyObject* o4 = PySequence_GetItem(source, 3);
2553         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2554             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2555             Py_DECREF(o1);
2556             Py_DECREF(o2);
2557             Py_DECREF(o3);
2558             Py_DECREF(o4);
2559             goto error;
2560         }
2561         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2562                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2563         Py_DECREF(o1);
2564         Py_DECREF(o2);
2565         Py_DECREF(o3);
2566         Py_DECREF(o4);
2567         return true;
2568     }
2569
2570  error:
2571     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2572     return false;
2573 }
2574
2575
2576
2577 bool wxColour_helper(PyObject* source, wxColour** obj) {
2578
2579     if (source == Py_None) {
2580         **obj = wxNullColour;
2581         return true;
2582     }
2583
2584     // If source is an object instance then it may already be the right type
2585     if (wxPySwigInstance_Check(source)) {
2586         wxColour* ptr;
2587         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2588             goto error;
2589         *obj = ptr;
2590         return true;
2591     }
2592     // otherwise check for a string
2593     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2594         wxString spec = Py2wxString(source);
2595         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2596             long red, green, blue;
2597             red = green = blue = 0;
2598             spec.Mid(1,2).ToLong(&red,   16);
2599             spec.Mid(3,2).ToLong(&green, 16);
2600             spec.Mid(5,2).ToLong(&blue,  16);
2601
2602             **obj = wxColour(red, green, blue);
2603             return true;
2604         }
2605         else {                                       // it's a colour name
2606             **obj = wxColour(spec);
2607             return true;
2608         }
2609     }
2610     // last chance: 3-tuple of integers is expected
2611     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2612         PyObject* o1 = PySequence_GetItem(source, 0);
2613         PyObject* o2 = PySequence_GetItem(source, 1);
2614         PyObject* o3 = PySequence_GetItem(source, 2);
2615         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2616             Py_DECREF(o1);
2617             Py_DECREF(o2);
2618             Py_DECREF(o3);
2619             goto error;
2620         }
2621         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2622         Py_DECREF(o1);
2623         Py_DECREF(o2);
2624         Py_DECREF(o3);
2625         return true;
2626     }
2627
2628  error:
2629     PyErr_SetString(PyExc_TypeError,
2630                     "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
2631     return false;
2632 }
2633
2634
2635 bool wxColour_typecheck(PyObject* source) {
2636
2637     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2638         return true;
2639
2640     if (PyString_Check(source) || PyUnicode_Check(source))
2641         return true;
2642
2643     return false;
2644 }
2645
2646
2647
2648 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2649
2650     if (source == Py_None) {
2651         **obj = wxPoint2D(-1,-1);
2652         return true;
2653     }
2654
2655     // If source is an object instance then it may already be the right type
2656     if (wxPySwigInstance_Check(source)) {
2657         wxPoint2D* ptr;
2658         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2659             goto error;
2660         *obj = ptr;
2661         return true;
2662     }
2663     // otherwise a length-2 sequence of floats is expected
2664     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2665         PyObject* o1 = PySequence_GetItem(source, 0);
2666         PyObject* o2 = PySequence_GetItem(source, 1);
2667         // This should really check for floats, not numbers -- but that would break code.
2668         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2669             Py_DECREF(o1);
2670             Py_DECREF(o2);
2671             goto error;
2672         }
2673         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2674         Py_DECREF(o1);
2675         Py_DECREF(o2);
2676         return true;
2677     }
2678  error:
2679     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2D object.");
2680     return false;
2681 }
2682
2683
2684 //----------------------------------------------------------------------
2685
2686 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
2687
2688     PyObject* list = PyList_New(0);
2689     for (size_t i=0; i < arr.GetCount(); i++) {
2690 #if wxUSE_UNICODE
2691         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2692 #else
2693         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2694 #endif
2695         PyList_Append(list, str);
2696         Py_DECREF(str);
2697     }
2698     return list;
2699 }
2700
2701
2702 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2703
2704     PyObject* list = PyList_New(0);
2705     for (size_t i=0; i < arr.GetCount(); i++) {
2706         PyObject* number = PyInt_FromLong(arr[i]);
2707         PyList_Append(list, number);
2708         Py_DECREF(number);
2709     }
2710     return list;
2711 }
2712
2713
2714 //----------------------------------------------------------------------
2715 //----------------------------------------------------------------------
2716
2717
2718
2719