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