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 #include "wx/wxPython/swigver.h"
  19 #include "wx/wxPython/twoitem.h"
  20
  21 #ifdef __WXMSW__
  22 #include <wx/msw/private.h>
  23 #include <wx/msw/winundef.h>
  24 #include <wx/msw/msvcrt.h>
  25 #endif
  26
  27 #ifdef __WXGTK__
  28 #include <gdk/gdk.h>
  29 #include <gdk/gdkx.h>
  30 #include <gtk/gtk.h>
  31 #include <gdk/gdkprivate.h>
  32 #include <wx/gtk/win_gtk.h>
  33 #define GetXWindow(wxwin) (wxwin)->m_wxwindow ? \
  34                           GDK_WINDOW_XWINDOW(GTK_PIZZA((wxwin)->m_wxwindow)->bin_window) : \
  35                           GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
  36 #include <locale.h>
  37 #endif
  38
  39 #ifdef __WXX11__
  40 #include "wx/x11/privx.h"
  41 #define GetXWindow(wxwin)   ((Window)(wxwin)->GetHandle())
  42 #endif
  43
  44 #ifdef __WXMAC__
  45 #include <wx/mac/private.h>
  46 #endif
  47
  48 #include <wx/clipbrd.h>
  49 #include <wx/mimetype.h>
  50 #include <wx/image.h>
  51
  52 //----------------------------------------------------------------------
  53
  54 #if PYTHON_API_VERSION < 1009 && wxUSE_UNICODE
  55 #error Python must support Unicode to use wxWindows Unicode
  56 #endif
  57
  58 //----------------------------------------------------------------------
  59
  60 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  61 bool wxPyDoCleanup = false;
  62 bool wxPyDoingCleanup = false;
  63
  64
  65 #ifdef WXP_WITH_THREAD
  66 #if !wxPyUSE_GIL_STATE
  67 struct wxPyThreadState {
  68     unsigned long  tid;
  69     PyThreadState* tstate;
  70
  71     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  72         : tid(_tid), tstate(_tstate) {}
  73 };
  74
  75 #include <wx/dynarray.h>
  76 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  77 #include <wx/arrimpl.cpp>
  78 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  79
  80 wxPyThreadStateArray* wxPyTStates = NULL;
  81 wxMutex*              wxPyTMutex = NULL;
  82
  83 #endif
  84 #endif
  85
  86
  87 #define DEFAULTENCODING_SIZE 64
  88 static char wxPyDefaultEncoding[DEFAULTENCODING_SIZE] = "ascii";
  89
  90 static PyObject* wxPython_dict = NULL;
  91 static PyObject* wxPyAssertionError = NULL;
  92 static PyObject* wxPyNoAppError = NULL;
  93
  94 PyObject* wxPyPtrTypeMap = NULL;
  95
  96
  97 #ifdef __WXMSW__             // If building for win32...
  98 //----------------------------------------------------------------------
  99 // This gets run when the DLL is loaded.  We just need to save a handle.
 100 //----------------------------------------------------------------------
 101
 102 extern "C"
 103 BOOL WINAPI DllMain(
 104     HINSTANCE   hinstDLL,    // handle to DLL module
 105     DWORD       fdwReason,   // reason for calling function
 106     LPVOID      lpvReserved  // reserved
 107    )
 108 {
 109     // If wxPython is embedded in another wxWidgets app then
 110     // the instance has already been set.
 111     if (! wxGetInstance())
 112         wxSetInstance(hinstDLL);
 113     return true;
 114 }
 115 #endif
 116
 117 //----------------------------------------------------------------------
 118 // Classes for implementing the wxp main application shell.
 119 //----------------------------------------------------------------------
 120
 121 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 122
 123
 124 wxPyApp::wxPyApp() {
 125     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 126     m_startupComplete = false;
 127 }
 128
 129
 130 wxPyApp::~wxPyApp() {
 131     wxPythonApp = NULL;
 132     wxApp::SetInstance(NULL);
 133 }
 134
 135
 136 // This one isn't acutally called...  We fake it with _BootstrapApp
 137 bool wxPyApp::OnInit() {
 138     return false;
 139 }
 140
 141
 142 int  wxPyApp::MainLoop() {
 143     int retval = 0;
 144
 145     DeletePendingObjects();
 146     bool initialized = wxTopLevelWindows.GetCount() != 0;
 147     if (initialized) {
 148         if ( m_exitOnFrameDelete == Later ) {
 149             m_exitOnFrameDelete = Yes;
 150         }
 151
 152         retval = wxApp::MainLoop();
 153         OnExit();
 154     }
 155     return retval;
 156 }
 157
 158
 159 bool wxPyApp::OnInitGui() {
 160     bool rval=true;
 161     wxApp::OnInitGui();  // in this case always call the base class version
 162     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 163     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 164         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 165     wxPyEndBlockThreads(blocked);
 166     return rval;
 167 }
 168
 169
 170 int wxPyApp::OnExit() {
 171     int rval=0;
 172     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 173     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 174         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 175     wxPyEndBlockThreads(blocked);
 176     wxApp::OnExit();  // in this case always call the base class version
 177     return rval;
 178 }
 179
 180
 181
 182 void wxPyApp::ExitMainLoop() {
 183     bool found;
 184     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 185     if ((found = wxPyCBH_findCallback(m_myInst, "ExitMainLoop")))
 186         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 187     wxPyEndBlockThreads(blocked);
 188     if (! found)
 189         wxApp::ExitMainLoop();
 190 }
 191
 192
 193 #ifdef __WXDEBUG__
 194 void wxPyApp::OnAssertFailure(const wxChar *file,
 195                               int line,
 196                               const wxChar *func,
 197                               const wxChar *cond,
 198                               const wxChar *msg)
 199 {
 200     // if we're not fully initialized then just log the error
 201     if (! m_startupComplete) {
 202         wxString buf;
 203         buf.Alloc(4096);
 204         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 205                    file, line, cond);
 206         if ( func && *func )
 207             buf << wxT(" in ") << func << wxT("()");
 208         if (msg != NULL)
 209             buf << wxT(": ") << msg;
 210
 211         wxLogDebug(buf);
 212         return;
 213     }
 214
 215     // If the OnAssert is overloaded in the Python class then call it...
 216     bool found;
 217     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 218     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 219         PyObject* fso = wx2PyString(file);
 220         PyObject* cso = wx2PyString(file);
 221         PyObject* mso;
 222         if (msg != NULL)
 223             mso = wx2PyString(file);
 224         else {
 225             mso = Py_None; Py_INCREF(Py_None);
 226         }
 227         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 228         Py_DECREF(fso);
 229         Py_DECREF(cso);
 230         Py_DECREF(mso);
 231     }
 232     wxPyEndBlockThreads(blocked);
 233
 234     // ...otherwise do our own thing with it
 235     if (! found) {
 236         // ignore it?
 237         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 238             return;
 239
 240         // turn it into a Python exception?
 241         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 242             wxString buf;
 243             buf.Alloc(4096);
 244             buf.Printf(wxT("C++ assertion \"%s\" failed at %s(%d)"), cond, file, line);
 245             if ( func && *func )
 246                 buf << wxT(" in ") << func << wxT("()");
 247             if (msg != NULL)
 248                 buf << wxT(": ") << msg;
 249
 250
 251             // set the exception
 252             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 253             PyObject* s = wx2PyString(buf);
 254             PyErr_SetObject(wxPyAssertionError, s);
 255             Py_DECREF(s);
 256             wxPyEndBlockThreads(blocked);
 257
 258             // Now when control returns to whatever API wrapper was called from
 259             // Python it should detect that an exception is set and will return
 260             // NULL, signalling the exception to Python.
 261         }
 262
 263         // Send it to the normal log destination, but only if
 264         // not _DIALOG because it will call this too
 265         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 266             wxString buf;
 267             buf.Alloc(4096);
 268             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 269                        file, line, cond);
 270             if ( func && *func )
 271                 buf << wxT(" in ") << func << wxT("()");
 272             if (msg != NULL)
 273                 buf << wxT(": ") << msg;
 274             wxLogDebug(buf);
 275         }
 276
 277         // do the normal wx assert dialog?
 278         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 279             wxApp::OnAssertFailure(file, line, func, cond, msg);
 280     }
 281 }
 282 #endif
 283
 284     // For catching Apple Events
 285 void wxPyApp::MacOpenFile(const wxString &fileName)
 286 {
 287     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 288     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 289         PyObject* s = wx2PyString(fileName);
 290         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 291         Py_DECREF(s);
 292     }
 293     wxPyEndBlockThreads(blocked);
 294 }
 295
 296 void wxPyApp::MacPrintFile(const wxString &fileName)
 297 {
 298     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 299     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 300         PyObject* s = wx2PyString(fileName);
 301         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 302         Py_DECREF(s);
 303     }
 304     wxPyEndBlockThreads(blocked);
 305 }
 306
 307 void wxPyApp::MacNewFile()
 308 {
 309     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 310     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 311         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 312     wxPyEndBlockThreads(blocked);
 313 }
 314
 315 void wxPyApp::MacReopenApp()
 316 {
 317     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 318     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 319         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 320     wxPyEndBlockThreads(blocked);
 321 }
 322
 323
 324 /*static*/
 325 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 326     return 0;
 327 }
 328
 329 /*static*/
 330 long wxPyApp::GetMacAboutMenuItemId() {
 331 #ifdef __WXMAC__
 332     return s_macAboutMenuItemId;
 333 #else
 334     return 0;
 335 #endif
 336 }
 337
 338 /*static*/
 339 long wxPyApp::GetMacPreferencesMenuItemId() {
 340 #ifdef __WXMAC__
 341     return s_macPreferencesMenuItemId;
 342 #else
 343     return 0;
 344 #endif
 345 }
 346
 347 /*static*/
 348 long wxPyApp::GetMacExitMenuItemId() {
 349 #ifdef __WXMAC__
 350     return s_macExitMenuItemId;
 351 #else
 352     return 0;
 353 #endif
 354 }
 355
 356 /*static*/
 357 wxString wxPyApp::GetMacHelpMenuTitleName() {
 358 #ifdef __WXMAC__
 359     return s_macHelpMenuTitleName;
 360 #else
 361     return wxEmptyString;
 362 #endif
 363 }
 364
 365 /*static*/
 366 void wxPyApp::SetMacSupportPCMenuShortcuts(bool) {
 367 }
 368
 369 /*static*/
 370 void wxPyApp::SetMacAboutMenuItemId(long val) {
 371 #ifdef __WXMAC__
 372     s_macAboutMenuItemId = val;
 373 #endif
 374 }
 375
 376 /*static*/
 377 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 378 #ifdef __WXMAC__
 379     s_macPreferencesMenuItemId = val;
 380 #endif
 381 }
 382
 383 /*static*/
 384 void wxPyApp::SetMacExitMenuItemId(long val) {
 385 #ifdef __WXMAC__
 386     s_macExitMenuItemId = val;
 387 #endif
 388 }
 389
 390 /*static*/
 391 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 392 #ifdef __WXMAC__
 393     s_macHelpMenuTitleName = val;
 394 #endif
 395 }
 396
 397
 398 // This finishes the initialization of wxWindows and then calls the OnInit
 399 // that should be present in the derived (Python) class.
 400 void wxPyApp::_BootstrapApp()
 401 {
 402     static      bool haveInitialized = false;
 403     bool        result;
 404     wxPyBlock_t     blocked;
 405     PyObject*   retval = NULL;
 406     PyObject*   pyint  = NULL;
 407
 408
 409     // Only initialize wxWidgets once
 410     if (! haveInitialized) {
 411
 412         // Get any command-line args passed to this program from the sys module
 413         int    argc = 0;
 414         char** argv = NULL;
 415         blocked = wxPyBeginBlockThreads();
 416
 417         PyObject* sysargv = PySys_GetObject("argv");
 418         PyObject* executable = PySys_GetObject("executable");
 419
 420         if (sysargv != NULL && executable != NULL) {
 421             argc = PyList_Size(sysargv) + 1;
 422             argv = new char*[argc+1];
 423             argv[0] = strdup(PyString_AsString(executable));
 424             int x;
 425             for(x=1; x<argc; x++) {
 426                 PyObject *pyArg = PyList_GetItem(sysargv, x-1);
 427                 argv[x] = strdup(PyString_AsString(pyArg));
 428             }
 429             argv[argc] = NULL;
 430         }
 431         wxPyEndBlockThreads(blocked);
 432
 433         // Initialize wxWidgets
 434         result = wxEntryStart(argc, argv);
 435         // wxApp takes ownership of the argv array, don't delete it here
 436
 437         blocked = wxPyBeginBlockThreads();
 438         if (! result)  {
 439             PyErr_SetString(PyExc_SystemError,
 440                             "wxEntryStart failed, unable to initialize wxWidgets!"
 441 #ifdef __WXGTK__
 442                             "  (Is DISPLAY set properly?)"
 443 #endif
 444                 );
 445             goto error;
 446         }
 447
 448         // On wxGTK the locale will be changed to match the system settings,
 449         // but Python before 2.4 needs to have LC_NUMERIC set to "C" in order
 450         // for the floating point conversions and such to work right.
 451 #if defined(__WXGTK__) && PY_VERSION_HEX < 0x02040000
 452         setlocale(LC_NUMERIC, "C");
 453 #endif
 454
 455 //        wxSystemOptions::SetOption(wxT("mac.textcontrol-use-mlte"), 1);
 456
 457         wxPyEndBlockThreads(blocked);
 458         haveInitialized = true;
 459     }
 460     else {
 461         this->argc = 0;
 462         this->argv = NULL;
 463     }
 464
 465
 466     // It's now ok to generate exceptions for assertion errors.
 467     wxPythonApp->SetStartupComplete(true);
 468
 469
 470     // Call the Python wxApp's OnPreInit and OnInit functions
 471     blocked = wxPyBeginBlockThreads();
 472     if (wxPyCBH_findCallback(m_myInst, "OnPreInit")) {
 473         PyObject* method = m_myInst.GetLastFound();
 474         PyObject* argTuple = PyTuple_New(0);
 475         retval = PyEval_CallObject(method, argTuple);
 476         m_myInst.clearRecursionGuard(method);
 477         Py_DECREF(argTuple);
 478         Py_DECREF(method);
 479         if (retval == NULL)
 480             goto error;
 481     }
 482     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 483
 484         PyObject* method = m_myInst.GetLastFound();
 485         PyObject* argTuple = PyTuple_New(0);
 486         retval = PyEval_CallObject(method, argTuple);
 487         m_myInst.clearRecursionGuard(method);
 488         Py_DECREF(argTuple);
 489         Py_DECREF(method);
 490         if (retval == NULL)
 491             // Don't PyErr_Print here, let the exception in this case go back
 492             // up to the wx.PyApp.__init__ scope.
 493             goto error;
 494
 495         pyint = PyNumber_Int(retval);
 496         if (! pyint) {
 497             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 498             goto error;
 499         }
 500         result = PyInt_AS_LONG(pyint);
 501     }
 502     else {
 503         // Is it okay if there is no OnInit?  Probably so...
 504         result = true;
 505     }
 506
 507     if (! result) {
 508         PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
 509     }
 510
 511  error:
 512     Py_XDECREF(retval);
 513     Py_XDECREF(pyint);
 514
 515     wxPyEndBlockThreads(blocked);
 516 };
 517
 518 //---------------------------------------------------------------------
 519 //----------------------------------------------------------------------
 520
 521
 522 #if 0
 523 static char* wxPyCopyCString(const wxChar* src)
 524 {
 525     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 526     size_t len = strlen(buff);
 527     char*  dest = new char[len+1];
 528     strcpy(dest, buff);
 529     return dest;
 530 }
 531
 532 #if wxUSE_UNICODE
 533 static char* wxPyCopyCString(const char* src)   // we need a char version too
 534 {
 535     size_t len = strlen(src);
 536     char*  dest = new char[len+1];
 537     strcpy(dest, src);
 538     return dest;
 539 }
 540 #endif
 541
 542 static wxChar* wxPyCopyWString(const char *src)
 543 {
 544     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 545     wxString str(src, *wxConvCurrent);
 546     return copystring(str);
 547 }
 548
 549 #if wxUSE_UNICODE
 550 static wxChar* wxPyCopyWString(const wxChar *src)
 551 {
 552     return copystring(src);
 553 }
 554 #endif
 555 #endif
 556
 557
 558 inline const char* dropwx(const char* name) {
 559     if (name[0] == 'w' && name[1] == 'x')
 560         return name+2;
 561     else
 562         return name;
 563 }
 564
 565 //----------------------------------------------------------------------
 566
 567 // This function is called when the wx._core_ module is imported to do some
 568 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 569 // wxPyApp::_BootstrapApp
 570 void __wxPyPreStart(PyObject* moduleDict)
 571 {
 572
 573 #ifdef __WXMSW__
 574 //     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF
 575 //                     | _CRTDBG_CHECK_ALWAYS_DF
 576 //                     | _CRTDBG_DELAY_FREE_MEM_DF
 577 //         );
 578 #endif
 579
 580 #ifdef WXP_WITH_THREAD
 581 #if wxPyUSE_GIL_STATE
 582     PyEval_InitThreads();
 583 #else
 584     PyEval_InitThreads();
 585     wxPyTStates = new wxPyThreadStateArray;
 586     wxPyTMutex = new wxMutex;
 587
 588     // Save the current (main) thread state in our array
 589     PyThreadState* tstate = wxPyBeginAllowThreads();
 590     wxPyEndAllowThreads(tstate);
 591 #endif
 592 #endif
 593
 594     // Ensure that the build options in the DLL (or whatever) match this build
 595     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 596
 597     wxInitAllImageHandlers();
 598 }
 599
 600
 601
 602 void __wxPyCleanup() {
 603     wxPyDoingCleanup = true;
 604     if (wxPyDoCleanup) {
 605         wxPyDoCleanup = false;
 606         wxEntryCleanup();
 607     }
 608 #ifdef WXP_WITH_THREAD
 609 #if !wxPyUSE_GIL_STATE
 610     delete wxPyTMutex;
 611     wxPyTMutex = NULL;
 612     wxPyTStates->Empty();
 613     delete wxPyTStates;
 614     wxPyTStates = NULL;
 615 #endif
 616 #endif
 617 }
 618
 619
 620 // Save a reference to the dictionary of the wx._core module, and inject
 621 // a few more things into it.
 622 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 623 {
 624
 625     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 626         return NULL;
 627
 628     if (!PyDict_Check(wxPython_dict)) {
 629         PyErr_SetString(PyExc_TypeError,
 630                         "_wxPySetDictionary must have dictionary object!");
 631         return NULL;
 632     }
 633
 634     if (! wxPyPtrTypeMap)
 635         wxPyPtrTypeMap = PyDict_New();
 636     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 637
 638     // Create an exception object to use for wxASSERTions
 639     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 640                                             PyExc_AssertionError, NULL);
 641     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 642
 643     // Create an exception object to use when the app object hasn't been created yet
 644     wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
 645                                         PyExc_RuntimeError, NULL);
 646     PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
 647
 648
 649
 650 #ifdef __WXMOTIF__
 651 #define wxPlatform "__WXMOTIF__"
 652 #define wxPlatName "wxMotif"
 653 #endif
 654 #ifdef __WXX11__
 655 #define wxPlatform "__WXX11__"
 656 #define wxPlatName "wxX11"
 657 #endif
 658 #ifdef __WXGTK__
 659 #define wxPlatform "__WXGTK__"
 660 #define wxPlatName "wxGTK"
 661 #endif
 662 #ifdef __WXMSW__
 663 #define wxPlatform "__WXMSW__"
 664 #define wxPlatName "wxMSW"
 665 #endif
 666 #ifdef __WXMAC__
 667 #define wxPlatform "__WXMAC__"
 668 #define wxPlatName "wxMac"
 669 #endif
 670
 671 #ifdef __WXDEBUG__
 672     int wxdebug = 1;
 673 #else
 674     int wxdebug = 0;
 675 #endif
 676
 677     // These should be deprecated in favor of the PlatformInfo tuple built below...
 678     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 679     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 680     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 681
 682     // Make a tuple of strings that gives more info about the platform.
 683     PyObject* PlatInfo = PyList_New(0);
 684     PyObject* obj;
 685
 686 #define _AddInfoString(st) \
 687     obj = PyString_FromString(st); \
 688     PyList_Append(PlatInfo, obj); \
 689     Py_DECREF(obj)
 690
 691     _AddInfoString(wxPlatform);
 692     _AddInfoString(wxPlatName);
 693 #if wxUSE_UNICODE
 694     _AddInfoString("unicode");
 695 #else
 696     _AddInfoString("ansi");
 697 #endif
 698 #ifdef __WXGTK__
 699 #ifdef __WXGTK20__
 700     _AddInfoString("gtk2");
 701 #else
 702     _AddInfoString("gtk1");
 703 #endif
 704 #endif
 705 #ifdef __WXDEBUG__
 706     _AddInfoString("wx-assertions-on");
 707 #else
 708     _AddInfoString("wx-assertions-off");
 709 #endif
 710     _AddInfoString(wxPy_SWIG_VERSION);
 711 #ifdef __WXMAC__
 712     #if wxMAC_USE_CORE_GRAPHICS
 713         _AddInfoString("mac-cg");
 714     #else
 715         _AddInfoString("mac-qd");
 716     #endif
 717     #if wxMAC_USE_NATIVE_TOOLBAR
 718         _AddInfoString("mac-native-tb");
 719     #else
 720         _AddInfoString("mac-no-native-tb");
 721     #endif
 722 #endif
 723
 724 #undef _AddInfoString
 725
 726     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 727     Py_DECREF(PlatInfo);
 728     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 729
 730     RETURN_NONE();
 731 }
 732
 733
 734
 735 //---------------------------------------------------------------------------
 736
 737 // Check for existence of a wxApp, setting an exception if there isn't one.
 738 // This doesn't need to aquire the GIL because it should only be called from
 739 // an %exception before the lock is released.
 740
 741 bool wxPyCheckForApp() {
 742     if (wxTheApp != NULL)
 743         return true;
 744     else {
 745         PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
 746         return false;
 747     }
 748 }
 749
 750 //---------------------------------------------------------------------------
 751
 752 void wxPyUserData_dtor(wxPyUserData* self) {
 753     if (! wxPyDoingCleanup) {
 754         wxPyBlock_t blocked = wxPyBeginBlockThreads();
 755         Py_DECREF(self->m_obj);
 756         self->m_obj = NULL;
 757         wxPyEndBlockThreads(blocked);
 758     }
 759 }
 760
 761
 762 void wxPyClientData_dtor(wxPyClientData* self) {
 763     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 764                                         // may have already garbage collected the object...
 765         if (self->m_incRef) {
 766             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 767             Py_DECREF(self->m_obj);
 768             wxPyEndBlockThreads(blocked);
 769         }
 770         self->m_obj = NULL;
 771     }
 772 }
 773
 774
 775
 776 // This is called when an OOR controled object is being destroyed.  Although
 777 // the C++ object is going away there is no way to force the Python object
 778 // (and all references to it) to die too.  This causes problems (crashes) in
 779 // wxPython when a python shadow object attempts to call a C++ method using
 780 // the now bogus pointer... So to try and prevent this we'll do a little black
 781 // magic and change the class of the python instance to a class that will
 782 // raise an exception for any attempt to call methods with it.  See
 783 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 784 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 785
 786     static PyObject* deadObjectClass = NULL;
 787
 788     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 789     if (deadObjectClass == NULL) {
 790         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 791         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 792         // will lead to a deadlock when it tries to aquire the GIL again.
 793         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 794         Py_INCREF(deadObjectClass);
 795     }
 796
 797
 798     // Only if there is more than one reference to the object and we are
 799     // holding the OOR reference:
 800     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
 801         // bool isInstance = wxPyInstance_Check(self->m_obj);
 802         // TODO same here
 803         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 804
 805         // Call __del__, if there is one.
 806         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 807         if (func) {
 808             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 809             Py_XDECREF(rv);
 810             Py_DECREF(func);
 811         }
 812         if (PyErr_Occurred())
 813             PyErr_Clear();      // just ignore it for now
 814
 815
 816         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 817         if (dict) {
 818             // Clear the instance's dictionary
 819             PyDict_Clear(dict);
 820
 821             // put the name of the old class into the instance, and then reset the
 822             // class to be the dead class.
 823             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 824             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 825             PyDict_SetItemString(dict, "_name", name);
 826             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 827             //Py_INCREF(deadObjectClass);
 828             Py_DECREF(klass);
 829             Py_DECREF(name);
 830         }
 831     }
 832
 833     // m_obj is DECREF'd in the base class dtor...
 834     wxPyEndBlockThreads(blocked);
 835 }
 836
 837
 838 //---------------------------------------------------------------------------
 839 // Stuff used by OOR to find the right wxPython class type to return and to
 840 // build it.
 841
 842
 843 // The pointer type map is used when the "pointer" type name generated by SWIG
 844 // is not the same as the shadow class name, for example wxPyTreeCtrl
 845 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 846 // so we'll just make it a Python dictionary in the wx module's namespace.
 847 // (See __wxSetDictionary)
 848 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 849     if (! wxPyPtrTypeMap)
 850         wxPyPtrTypeMap = PyDict_New();
 851     PyDict_SetItemString(wxPyPtrTypeMap,
 852                          (char*)commonName,
 853                          PyString_FromString((char*)ptrName));
 854 }
 855
 856
 857
 858
 859 PyObject*  wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
 860     PyObject* target = NULL;
 861     bool      isEvtHandler = false;
 862     bool      isSizer = false;
 863
 864     if (source) {
 865         // If it's derived from wxEvtHandler then there may
 866         // already be a pointer to a Python object that we can use
 867         // in the OOR data.
 868         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 869             isEvtHandler = true;
 870             wxEvtHandler* eh = (wxEvtHandler*)source;
 871             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 872             if (data) {
 873                 target = data->m_obj;
 874                 if (target)
 875                     Py_INCREF(target);
 876             }
 877         }
 878
 879         // Also check for wxSizer
 880         if (!target && wxIsKindOf(source, wxSizer)) {
 881             isSizer = true;
 882             wxSizer* sz = (wxSizer*)source;
 883             wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
 884             if (data) {
 885                 target = data->m_obj;
 886                 if (target)
 887                     Py_INCREF(target);
 888             }
 889         }
 890
 891         if (! target) {
 892             // Otherwise make it the old fashioned way by making a new shadow
 893             // object and putting this pointer in it.  Look up the class
 894             // heirarchy until we find a class name that is located in the
 895             // python module.
 896             const wxClassInfo* info   = source->GetClassInfo();
 897             wxString           name   = info->GetClassName();
 898             bool               exists = wxPyCheckSwigType(name);
 899             while (info && !exists) {
 900                 info = info->GetBaseClass1();
 901                 name = info->GetClassName();
 902                 exists = wxPyCheckSwigType(name);
 903             }
 904             if (info) {
 905                 target = wxPyConstructObject((void*)source, name, setThisOwn);
 906                 if (target && isEvtHandler)
 907                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
 908                 if (target && isSizer)
 909                     ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
 910             } else {
 911                 wxString msg(wxT("wxPython class not found for "));
 912                 msg += source->GetClassInfo()->GetClassName();
 913                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
 914                 target = NULL;
 915             }
 916         }
 917     } else {  // source was NULL so return None.
 918         Py_INCREF(Py_None); target = Py_None;
 919     }
 920     return target;
 921 }
 922
 923
 924 PyObject*  wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
 925
 926     return wxPyMake_wxObject(source, setThisOwn);
 927 }
 928
 929
 930 //---------------------------------------------------------------------------
 931
 932
 933 #ifdef WXP_WITH_THREAD
 934 #if !wxPyUSE_GIL_STATE
 935
 936 inline
 937 unsigned long wxPyGetCurrentThreadId() {
 938     return wxThread::GetCurrentId();
 939 }
 940
 941 static wxPyThreadState gs_shutdownTState;
 942
 943 static
 944 wxPyThreadState* wxPyGetThreadState() {
 945     if (wxPyTMutex == NULL) // Python is shutting down...
 946         return &gs_shutdownTState;
 947
 948     unsigned long ctid = wxPyGetCurrentThreadId();
 949     wxPyThreadState* tstate = NULL;
 950
 951     wxPyTMutex->Lock();
 952     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 953         wxPyThreadState& info = wxPyTStates->Item(i);
 954         if (info.tid == ctid) {
 955             tstate = &info;
 956             break;
 957         }
 958     }
 959     wxPyTMutex->Unlock();
 960     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
 961     return tstate;
 962 }
 963
 964
 965 static
 966 void wxPySaveThreadState(PyThreadState* tstate) {
 967     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
 968         gs_shutdownTState.tstate = tstate;
 969         return;
 970     }
 971     unsigned long ctid = wxPyGetCurrentThreadId();
 972     wxPyTMutex->Lock();
 973     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 974         wxPyThreadState& info = wxPyTStates->Item(i);
 975         if (info.tid == ctid) {
 976 #if 0
 977             if (info.tstate != tstate)
 978                 wxLogMessage("*** tstate mismatch!???");
 979 #endif
 980             info.tstate = tstate;    // allow for transient tstates
 981             // Normally it will never change, but apparently COM callbacks
 982             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
 983             // tstate which will then be garbage the next time we try to use
 984             // it...
 985
 986             wxPyTMutex->Unlock();
 987             return;
 988         }
 989     }
 990     // not found, so add it...
 991     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
 992     wxPyTMutex->Unlock();
 993 }
 994
 995 #endif
 996 #endif
 997
 998
 999
1000 // Calls from Python to wxWindows code are wrapped in calls to these
1001 // functions:
1002
1003 PyThreadState* wxPyBeginAllowThreads() {
1004 #ifdef WXP_WITH_THREAD
1005     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1006 #if !wxPyUSE_GIL_STATE
1007     wxPySaveThreadState(saved);
1008 #endif
1009     return saved;
1010 #else
1011     return NULL;
1012 #endif
1013 }
1014
1015 void wxPyEndAllowThreads(PyThreadState* saved) {
1016 #ifdef WXP_WITH_THREAD
1017     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1018 #endif
1019 }
1020
1021
1022
1023 // Calls from wxWindows back to Python code, or even any PyObject
1024 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1025
1026 wxPyBlock_t wxPyBeginBlockThreads() {
1027 #ifdef WXP_WITH_THREAD
1028     if (! Py_IsInitialized()) {
1029         return (wxPyBlock_t)0;
1030     }
1031 #if wxPyUSE_GIL_STATE
1032     PyGILState_STATE state = PyGILState_Ensure();
1033     return state;
1034 #else
1035     PyThreadState *current = _PyThreadState_Current;
1036
1037     // Only block if there wasn't already a tstate, or if the current one is
1038     // not the one we are wanting to change to.  This should prevent deadlock
1039     // if there are nested calls to wxPyBeginBlockThreads
1040     wxPyBlock_t blocked = false;
1041     wxPyThreadState* tstate = wxPyGetThreadState();
1042     if (current != tstate->tstate) {
1043         PyEval_RestoreThread(tstate->tstate);
1044         blocked = true;
1045     }
1046     return blocked;
1047 #endif
1048 #else
1049     return (wxPyBlock_t)0;
1050 #endif
1051 }
1052
1053
1054 void wxPyEndBlockThreads(wxPyBlock_t blocked) {
1055 #ifdef WXP_WITH_THREAD
1056     if (! Py_IsInitialized()) {
1057         return;
1058     }
1059 #if wxPyUSE_GIL_STATE
1060     PyGILState_Release(blocked);
1061 #else
1062     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1063     // The value of blocked passed in needs to be the same as that returned
1064     // from wxPyBeginBlockThreads at the same nesting level.
1065     if ( blocked ) {
1066         PyEval_SaveThread();
1067     }
1068 #endif
1069 #endif
1070 }
1071
1072
1073 //---------------------------------------------------------------------------
1074 // wxPyInputStream and wxPyCBInputStream methods
1075
1076
1077 void wxPyInputStream::close() {
1078     /* do nothing for now */
1079 }
1080
1081 void wxPyInputStream::flush() {
1082     /* do nothing for now */
1083 }
1084
1085 bool wxPyInputStream::eof() {
1086     if (m_wxis)
1087         return m_wxis->Eof();
1088     else
1089         return true;
1090 }
1091
1092 wxPyInputStream::~wxPyInputStream() {
1093     if (m_wxis)
1094         delete m_wxis;
1095 }
1096
1097
1098
1099
1100 PyObject* wxPyInputStream::read(int size) {
1101     PyObject* obj = NULL;
1102     wxMemoryBuffer buf;
1103     const int BUFSIZE = 1024;
1104
1105     // check if we have a real wxInputStream to work with
1106     if (!m_wxis) {
1107         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1108         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1109         wxPyEndBlockThreads(blocked);
1110         return NULL;
1111     }
1112
1113     if (size < 0) {
1114         // read while bytes are available on the stream
1115         while ( m_wxis->CanRead() ) {
1116             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1117             buf.UngetAppendBuf(m_wxis->LastRead());
1118         }
1119
1120     } else {  // Read only size number of characters
1121         m_wxis->Read(buf.GetWriteBuf(size), size);
1122         buf.UngetWriteBuf(m_wxis->LastRead());
1123     }
1124
1125     // error check
1126     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1127     wxStreamError err = m_wxis->GetLastError();
1128     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1129         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1130     }
1131     else {
1132         // We use only strings for the streams, not unicode
1133         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1134     }
1135     wxPyEndBlockThreads(blocked);
1136     return obj;
1137 }
1138
1139
1140 PyObject* wxPyInputStream::readline(int size) {
1141     PyObject* obj = NULL;
1142     wxMemoryBuffer buf;
1143     int i;
1144     char ch;
1145
1146     // check if we have a real wxInputStream to work with
1147     if (!m_wxis) {
1148         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1149         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1150         wxPyEndBlockThreads(blocked);
1151         return NULL;
1152     }
1153
1154     // read until \n or byte limit reached
1155     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1156         ch = m_wxis->GetC();
1157         buf.AppendByte(ch);
1158     }
1159
1160     // errorcheck
1161     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1162     wxStreamError err = m_wxis->GetLastError();
1163     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1164         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1165     }
1166     else {
1167         // We use only strings for the streams, not unicode
1168         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1169     }
1170     wxPyEndBlockThreads(blocked);
1171     return obj;
1172 }
1173
1174
1175 PyObject* wxPyInputStream::readlines(int sizehint) {
1176     PyObject* pylist;
1177
1178     // check if we have a real wxInputStream to work with
1179     if (!m_wxis) {
1180         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1181         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1182         wxPyEndBlockThreads(blocked);
1183         return NULL;
1184     }
1185
1186     // init list
1187     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1188     pylist = PyList_New(0);
1189     wxPyEndBlockThreads(blocked);
1190
1191     if (!pylist) {
1192         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1193         PyErr_NoMemory();
1194         wxPyEndBlockThreads(blocked);
1195         return NULL;
1196     }
1197
1198     // read sizehint bytes or until EOF
1199     int i;
1200     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1201         PyObject* s = this->readline();
1202         if (s == NULL) {
1203             wxPyBlock_t blocked = wxPyBeginBlockThreads();
1204             Py_DECREF(pylist);
1205             wxPyEndBlockThreads(blocked);
1206             return NULL;
1207         }
1208         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1209         PyList_Append(pylist, s);
1210         i += PyString_Size(s);
1211         wxPyEndBlockThreads(blocked);
1212     }
1213
1214     // error check
1215     wxStreamError err = m_wxis->GetLastError();
1216     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1217         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1218         Py_DECREF(pylist);
1219         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1220         wxPyEndBlockThreads(blocked);
1221         return NULL;
1222     }
1223
1224     return pylist;
1225 }
1226
1227
1228 void wxPyInputStream::seek(int offset, int whence) {
1229     if (m_wxis)
1230         m_wxis->SeekI(offset, wxSeekMode(whence));
1231 }
1232
1233 int wxPyInputStream::tell(){
1234     if (m_wxis)
1235         return m_wxis->TellI();
1236     else return 0;
1237 }
1238
1239
1240
1241
1242 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1243     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1244 {}
1245
1246 wxPyCBInputStream::wxPyCBInputStream(const wxPyCBInputStream& other)
1247 {
1248     m_read  = other.m_read;
1249     m_seek  = other.m_seek;
1250     m_tell  = other.m_tell;
1251     m_block = other.m_block;
1252     Py_INCREF(m_read);
1253     Py_INCREF(m_seek);
1254     Py_INCREF(m_tell);
1255 }
1256
1257
1258 wxPyCBInputStream::~wxPyCBInputStream() {
1259     wxPyBlock_t blocked;
1260     if (m_block) blocked = wxPyBeginBlockThreads();
1261     Py_XDECREF(m_read);
1262     Py_XDECREF(m_seek);
1263     Py_XDECREF(m_tell);
1264     if (m_block) wxPyEndBlockThreads(blocked);
1265 }
1266
1267
1268 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1269     wxPyBlock_t blocked;
1270     if (block) blocked = wxPyBeginBlockThreads();
1271
1272     PyObject* read = getMethod(py, "read");
1273     PyObject* seek = getMethod(py, "seek");
1274     PyObject* tell = getMethod(py, "tell");
1275
1276     if (!read) {
1277         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1278         Py_XDECREF(read);
1279         Py_XDECREF(seek);
1280         Py_XDECREF(tell);
1281         if (block) wxPyEndBlockThreads(blocked);
1282         return NULL;
1283     }
1284
1285     if (block) wxPyEndBlockThreads(blocked);
1286     return new wxPyCBInputStream(read, seek, tell, block);
1287 }
1288
1289
1290 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1291     return wxPyCBInputStream::create(py, block);
1292 }
1293
1294 wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other) {
1295     return new wxPyCBInputStream(*other);
1296 }
1297
1298 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1299     if (!PyObject_HasAttrString(py, name))
1300         return NULL;
1301     PyObject* o = PyObject_GetAttrString(py, name);
1302     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1303         Py_DECREF(o);
1304         return NULL;
1305     }
1306     return o;
1307 }
1308
1309
1310 wxFileOffset wxPyCBInputStream::GetLength() const {
1311     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1312     if (m_seek && m_tell) {
1313         wxFileOffset temp = self->OnSysTell();
1314         wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
1315         self->OnSysSeek(temp, wxFromStart);
1316         return ret;
1317     }
1318     else
1319         return wxInvalidOffset;
1320 }
1321
1322
1323 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1324     if (bufsize == 0)
1325         return 0;
1326
1327     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1328     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1329     PyObject* result = PyEval_CallObject(m_read, arglist);
1330     Py_DECREF(arglist);
1331
1332     size_t o = 0;
1333     if ((result != NULL) && PyString_Check(result)) {
1334         o = PyString_Size(result);
1335         if (o == 0)
1336             m_lasterror = wxSTREAM_EOF;
1337         if (o > bufsize)
1338             o = bufsize;
1339         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1340         Py_DECREF(result);
1341
1342     }
1343     else
1344         m_lasterror = wxSTREAM_READ_ERROR;
1345     wxPyEndBlockThreads(blocked);
1346     return o;
1347 }
1348
1349 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1350     m_lasterror = wxSTREAM_WRITE_ERROR;
1351     return 0;
1352 }
1353
1354
1355 wxFileOffset wxPyCBInputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
1356     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1357     PyObject* arglist = PyTuple_New(2);
1358
1359     if (sizeof(wxFileOffset) > sizeof(long))
1360         // wxFileOffset is a 64-bit value...
1361         PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
1362     else
1363         PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
1364
1365     PyTuple_SET_ITEM(arglist, 1, PyInt_FromLong(mode));
1366
1367
1368     PyObject* result = PyEval_CallObject(m_seek, arglist);
1369     Py_DECREF(arglist);
1370     Py_XDECREF(result);
1371     wxPyEndBlockThreads(blocked);
1372     return OnSysTell();
1373 }
1374
1375
1376 wxFileOffset wxPyCBInputStream::OnSysTell() const {
1377     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1378     PyObject* arglist = Py_BuildValue("()");
1379     PyObject* result = PyEval_CallObject(m_tell, arglist);
1380     Py_DECREF(arglist);
1381     wxFileOffset o = 0;
1382     if (result != NULL) {
1383         if (PyLong_Check(result))
1384             o = PyLong_AsLongLong(result);
1385         else
1386             o = PyInt_AsLong(result);
1387         Py_DECREF(result);
1388     };
1389     wxPyEndBlockThreads(blocked);
1390     return o;
1391 }
1392
1393 //----------------------------------------------------------------------
1394
1395 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1396
1397 wxPyCallback::wxPyCallback(PyObject* func) {
1398     m_func = func;
1399     Py_INCREF(m_func);
1400 }
1401
1402 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1403     m_func = other.m_func;
1404     Py_INCREF(m_func);
1405 }
1406
1407 wxPyCallback::~wxPyCallback() {
1408     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1409     Py_DECREF(m_func);
1410     wxPyEndBlockThreads(blocked);
1411 }
1412
1413
1414 #define wxPy_PRECALLINIT     "_preCallInit"
1415 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1416
1417 // This function is used for all events destined for Python event handlers.
1418 void wxPyCallback::EventThunker(wxEvent& event) {
1419     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1420     PyObject*       func = cb->m_func;
1421     PyObject*       result;
1422     PyObject*       arg;
1423     PyObject*       tuple;
1424     bool            checkSkip = false;
1425
1426     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1427     wxString className = event.GetClassInfo()->GetClassName();
1428
1429     // If the event is one of these types then pass the original
1430     // event object instead of the one passed to us.
1431     if ( className == wxT("wxPyEvent") ) {
1432         arg =       ((wxPyEvent*)&event)->GetSelf();
1433         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1434     }
1435     else if ( className == wxT("wxPyCommandEvent") ) {
1436         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1437         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1438     }
1439     else {
1440         arg = wxPyConstructObject((void*)&event, className);
1441     }
1442
1443     if (!arg) {
1444         PyErr_Print();
1445     } else {
1446         // "intern" the pre/post method names to speed up the HasAttr
1447         static PyObject* s_preName  = NULL;
1448         static PyObject* s_postName = NULL;
1449         if (s_preName == NULL) {
1450             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1451             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1452         }
1453
1454         // Check if the event object needs some preinitialization
1455         if (PyObject_HasAttr(arg, s_preName)) {
1456             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1457             if ( result ) {
1458                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1459                 PyErr_Clear();       // Just in case...
1460             } else {
1461                 PyErr_Print();
1462             }
1463         }
1464
1465         // Call the event handler, passing the event object
1466         tuple = PyTuple_New(1);
1467         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1468         result = PyEval_CallObject(func, tuple);
1469         if ( result ) {
1470             Py_DECREF(result);   // result is ignored, but we still need to decref it
1471             PyErr_Clear();       // Just in case...
1472         } else {
1473             PyErr_Print();
1474         }
1475
1476         // Check if the event object needs some post cleanup
1477         if (PyObject_HasAttr(arg, s_postName)) {
1478             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1479             if ( result ) {
1480                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1481                 PyErr_Clear();       // Just in case...
1482             } else {
1483                 PyErr_Print();
1484             }
1485         }
1486
1487         if ( checkSkip ) {
1488             // if the event object was one of our special types and
1489             // it had been cloned, then we need to extract the Skipped
1490             // value from the original and set it in the clone.
1491             result = PyObject_CallMethod(arg, "GetSkipped", "");
1492             if ( result ) {
1493                 event.Skip(PyInt_AsLong(result));
1494                 Py_DECREF(result);
1495             } else {
1496                 PyErr_Print();
1497             }
1498         }
1499         Py_DECREF(tuple);
1500     }
1501     wxPyEndBlockThreads(blocked);
1502 }
1503
1504
1505 //----------------------------------------------------------------------
1506
1507 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1508       m_lastFound = NULL;
1509       m_self = other.m_self;
1510       m_class = other.m_class;
1511       if (m_self) {
1512           Py_INCREF(m_self);
1513           Py_INCREF(m_class);
1514       }
1515 }
1516
1517
1518 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1519     m_self = self;
1520     m_class = klass;
1521     m_incRef = incref;
1522     if (incref) {
1523         Py_INCREF(m_self);
1524         Py_INCREF(m_class);
1525     }
1526 }
1527
1528
1529 #if PYTHON_API_VERSION >= 1011
1530
1531 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1532 // in which the method was defined.  Starting with 2.2 it returns
1533 // "class that asked for the method" which seems totally bogus to me
1534 // but apprently it fixes some obscure problem waiting to happen in
1535 // Python.  Since the API was not documented Guido and the gang felt
1536 // safe in changing it.  Needless to say that totally screwed up the
1537 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1538 // code to find the class where the method is actually defined...
1539
1540 static
1541 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1542 {
1543     int i, n;
1544
1545     if (PyType_Check(klass)) {      // new style classes
1546         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1547         PyTypeObject* type = (PyTypeObject*)klass;
1548         PyObject *mro, *res, *base, *dict;
1549         /* Look in tp_dict of types in MRO */
1550         mro = type->tp_mro;
1551         assert(PyTuple_Check(mro));
1552         n = PyTuple_GET_SIZE(mro);
1553         for (i = 0; i < n; i++) {
1554             base = PyTuple_GET_ITEM(mro, i);
1555             if (PyClass_Check(base))
1556                 dict = ((PyClassObject *)base)->cl_dict;
1557             else {
1558                 assert(PyType_Check(base));
1559                 dict = ((PyTypeObject *)base)->tp_dict;
1560             }
1561             assert(dict && PyDict_Check(dict));
1562             res = PyDict_GetItem(dict, name);
1563             if (res != NULL)
1564                 return base;
1565         }
1566         return NULL;
1567     }
1568
1569     else if (PyClass_Check(klass)) { // old style classes
1570         // This code is borrowed/adapted from class_lookup in classobject.c
1571         PyClassObject* cp = (PyClassObject*)klass;
1572         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1573         if (value != NULL) {
1574             return (PyObject*)cp;
1575         }
1576         n = PyTuple_Size(cp->cl_bases);
1577         for (i = 0; i < n; i++) {
1578             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1579             PyObject *v = PyFindClassWithAttr(base, name);
1580             if (v != NULL)
1581                 return v;
1582         }
1583         return NULL;
1584     }
1585     return NULL;
1586 }
1587 #endif
1588
1589
1590 static
1591 PyObject* PyMethod_GetDefiningClass(PyObject* method, PyObject* nameo)
1592 {
1593     PyObject* mgc = PyMethod_GET_CLASS(method);
1594
1595 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1596     return mgc;
1597 #else                             // 2.2 and after, the hard way...
1598     return PyFindClassWithAttr(mgc, nameo);
1599 #endif
1600 }
1601
1602
1603
1604 // To avoid recursion when an overridden virtual method wants to call the base
1605 // class version, temporarily set an attribute in the instance with the same
1606 // name as the method.  Then the PyObject_GetAttr in the next findCallback
1607 // will return this attribute and the PyMethod_Check will fail.
1608
1609 void wxPyCallbackHelper::setRecursionGuard(PyObject* method) const
1610 {
1611     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1612     PyObject_SetAttr(m_self, func->func_name, Py_None);
1613 }
1614
1615 void wxPyCallbackHelper::clearRecursionGuard(PyObject* method) const
1616 {
1617     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1618     if (PyObject_HasAttr(m_self, func->func_name)) {
1619         PyObject_DelAttr(m_self, func->func_name);
1620     }
1621 }
1622
1623 // bool wxPyCallbackHelper::hasRecursionGuard(PyObject* method) const
1624 // {
1625 //     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1626 //     if (PyObject_HasAttr(m_self, func->func_name)) {
1627 //         PyObject* attr = PyObject_GetAttr(m_self, func->func_name);
1628 //         bool retval = (attr == Py_None);
1629 //         Py_DECREF(attr);
1630 //         return retval;
1631 //     }
1632 //     return false;
1633 // }
1634
1635
1636 bool wxPyCallbackHelper::findCallback(const char* name, bool setGuard) const {
1637     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1638     PyObject *method, *klass;
1639     PyObject* nameo = PyString_FromString(name);
1640     self->m_lastFound = NULL;
1641
1642     // If the object (m_self) has an attibute of the given name...
1643     if (m_self && PyObject_HasAttr(m_self, nameo)) {
1644         method = PyObject_GetAttr(m_self, nameo);
1645
1646         // ...and if that attribute is a method, and if that method's class is
1647         // not from the registered class or a base class...
1648         if (PyMethod_Check(method) &&
1649             (klass = PyMethod_GetDefiningClass(method, nameo)) != NULL &&
1650             (klass != m_class) &&
1651             PyObject_IsSubclass(klass, m_class)) {
1652
1653             // ...then we'll save a pointer to the method so callCallback can
1654             // call it.  But first, set a recursion guard in case the
1655             // overridden method wants to call the base class version.
1656             if (setGuard)
1657                 setRecursionGuard(method);
1658             self->m_lastFound = method;
1659         }
1660         else {
1661             Py_DECREF(method);
1662         }
1663     }
1664
1665     Py_DECREF(nameo);
1666     return m_lastFound != NULL;
1667 }
1668
1669
1670 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1671     PyObject*   result;
1672     int         retval = false;
1673
1674     result = callCallbackObj(argTuple);
1675     if (result) {                       // Assumes an integer return type...
1676         retval = PyInt_AsLong(result);
1677         Py_DECREF(result);
1678         PyErr_Clear();                  // forget about it if it's not...
1679     }
1680     return retval;
1681 }
1682
1683 // Invoke the Python callable object, returning the raw PyObject return
1684 // value.  Caller should DECREF the return value and also manage the GIL.
1685 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1686     PyObject* result;
1687
1688     // Save a copy of the pointer in case the callback generates another
1689     // callback.  In that case m_lastFound will have a different value when
1690     // it gets back here...
1691     PyObject* method = m_lastFound;
1692
1693     result = PyEval_CallObject(method, argTuple);
1694     clearRecursionGuard(method);
1695
1696     Py_DECREF(argTuple);
1697     Py_DECREF(method);
1698     if (!result) {
1699         PyErr_Print();
1700     }
1701     return result;
1702 }
1703
1704
1705 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1706     cbh.setSelf(self, klass, incref);
1707 }
1708
1709 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name, bool setGuard) {
1710     return cbh.findCallback(name, setGuard);
1711 }
1712
1713 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1714     return cbh.callCallback(argTuple);
1715 }
1716
1717 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1718     return cbh.callCallbackObj(argTuple);
1719 }
1720
1721
1722 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1723     if (cbh->m_incRef) {
1724         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1725         Py_XDECREF(cbh->m_self);
1726         Py_XDECREF(cbh->m_class);
1727         wxPyEndBlockThreads(blocked);
1728     }
1729 }
1730
1731 //---------------------------------------------------------------------------
1732 //---------------------------------------------------------------------------
1733 // These event classes can be derived from in Python and passed through the event
1734 // system without losing anything.  They do this by keeping a reference to
1735 // themselves and some special case handling in wxPyCallback::EventThunker.
1736
1737
1738 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1739     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1740     //Py_INCREF(m_self);        //      circular loops...
1741     m_cloned = false;
1742 }
1743
1744 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1745     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1746     if (m_cloned)
1747         Py_DECREF(m_self);
1748     wxPyEndBlockThreads(blocked);
1749 }
1750
1751 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1752     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1753     if (m_cloned)
1754         Py_DECREF(m_self);
1755     m_self = self;
1756     if (clone) {
1757         Py_INCREF(m_self);
1758         m_cloned = true;
1759     }
1760     wxPyEndBlockThreads(blocked);
1761 }
1762
1763 PyObject* wxPyEvtSelfRef::GetSelf() const {
1764     Py_INCREF(m_self);
1765     return m_self;
1766 }
1767
1768
1769 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1770 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1771
1772
1773 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1774     : wxEvent(winid, commandType) {
1775 }
1776
1777
1778 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1779     : wxEvent(evt)
1780 {
1781     SetSelf(evt.m_self, true);
1782 }
1783
1784
1785 wxPyEvent::~wxPyEvent() {
1786 }
1787
1788
1789 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1790     : wxCommandEvent(commandType, id) {
1791 }
1792
1793
1794 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1795     : wxCommandEvent(evt)
1796 {
1797     SetSelf(evt.m_self, true);
1798 }
1799
1800
1801 wxPyCommandEvent::~wxPyCommandEvent() {
1802 }
1803
1804
1805
1806
1807
1808 //---------------------------------------------------------------------------
1809 //---------------------------------------------------------------------------
1810 // Convert a wxList to a Python List, only works for lists of wxObjects
1811
1812 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1813     wxList*     list = (wxList*)listbase;  // this is probably bad...
1814     PyObject*   pyList;
1815     PyObject*   pyObj;
1816     wxObject*   wxObj;
1817     wxNode*     node = list->GetFirst();
1818
1819     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1820     pyList = PyList_New(0);
1821     while (node) {
1822         wxObj = node->GetData();
1823         pyObj = wxPyMake_wxObject(wxObj,false);
1824         PyList_Append(pyList, pyObj);
1825         Py_DECREF(pyObj);  // the Append also does an INCREF, that's one more than we need.
1826         node = node->GetNext();
1827     }
1828     wxPyEndBlockThreads(blocked);
1829     return pyList;
1830 }
1831
1832 //----------------------------------------------------------------------
1833
1834 long wxPyGetWinHandle(wxWindow* win) {
1835
1836 #ifdef __WXMSW__
1837     return (long)win->GetHandle();
1838 #endif
1839
1840 #if defined(__WXGTK__) || defined(__WXX11)
1841     return (long)GetXWindow(win);
1842 #endif
1843
1844 #ifdef __WXMAC__
1845     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
1846     return (long)win->GetHandle();
1847 #endif
1848
1849     return 0;
1850 }
1851
1852 //----------------------------------------------------------------------
1853 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1854 // included in every file over and over again...
1855
1856 wxString* wxString_in_helper(PyObject* source) {
1857     wxString* target = NULL;
1858
1859     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1860         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
1861         return NULL;
1862     }
1863 #if wxUSE_UNICODE
1864     PyObject* uni = source;
1865     if (PyString_Check(source)) {
1866         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1867         if (PyErr_Occurred()) return NULL;
1868     }
1869     target = new wxString();
1870     size_t len = PyUnicode_GET_SIZE(uni);
1871     if (len) {
1872         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target->GetWriteBuf(len), len);
1873         target->UngetWriteBuf(len);
1874     }
1875
1876     if (PyString_Check(source))
1877         Py_DECREF(uni);
1878 #else
1879     // Convert to a string object if it isn't already, then to wxString
1880     PyObject* str = source;
1881     if (PyUnicode_Check(source)) {
1882         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1883         if (PyErr_Occurred()) return NULL;
1884     }
1885     else if (!PyString_Check(source)) {
1886         str = PyObject_Str(source);
1887         if (PyErr_Occurred()) return NULL;
1888     }
1889     char* tmpPtr; Py_ssize_t tmpSize;
1890     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1891     target = new wxString(tmpPtr, tmpSize);
1892
1893     if (!PyString_Check(source))
1894         Py_DECREF(str);
1895 #endif // wxUSE_UNICODE
1896
1897     return target;
1898 }
1899
1900
1901 // Similar to above except doesn't use "new" and doesn't set an exception
1902 wxString Py2wxString(PyObject* source)
1903 {
1904     wxString target;
1905
1906 #if wxUSE_UNICODE
1907     // Convert to a unicode object, if not already, then to a wxString
1908     PyObject* uni = source;
1909     if (!PyUnicode_Check(source)) {
1910         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1911         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
1912     }
1913     size_t len = PyUnicode_GET_SIZE(uni);
1914     if (len) {
1915         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target.GetWriteBuf(len), len);
1916         target.UngetWriteBuf();
1917     }
1918
1919     if (!PyUnicode_Check(source))
1920         Py_DECREF(uni);
1921 #else
1922     // Convert to a string object if it isn't already, then to wxString
1923     PyObject* str = source;
1924     if (PyUnicode_Check(source)) {
1925         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1926         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1927     }
1928     else if (!PyString_Check(source)) {
1929         str = PyObject_Str(source);
1930         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1931     }
1932     char* tmpPtr; Py_ssize_t tmpSize;
1933     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1934     target = wxString(tmpPtr, tmpSize);
1935
1936     if (!PyString_Check(source))
1937         Py_DECREF(str);
1938 #endif // wxUSE_UNICODE
1939
1940     return target;
1941 }
1942
1943
1944 // Make either a Python String or Unicode object, depending on build mode
1945 PyObject* wx2PyString(const wxString& src)
1946 {
1947     PyObject* str;
1948 #if wxUSE_UNICODE
1949     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
1950 #else
1951     str = PyString_FromStringAndSize(src.c_str(), src.Len());
1952 #endif
1953     return str;
1954 }
1955
1956
1957
1958 void wxSetDefaultPyEncoding(const char* encoding)
1959 {
1960     strncpy(wxPyDefaultEncoding, encoding, DEFAULTENCODING_SIZE);
1961 }
1962
1963 const char* wxGetDefaultPyEncoding()
1964 {
1965     return wxPyDefaultEncoding;
1966 }
1967
1968 //----------------------------------------------------------------------
1969
1970
1971 byte* byte_LIST_helper(PyObject* source) {
1972     if (!PyList_Check(source)) {
1973         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1974         return NULL;
1975     }
1976     int count = PyList_Size(source);
1977     byte* temp = new byte[count];
1978     if (! temp) {
1979         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1980         return NULL;
1981     }
1982     for (int x=0; x<count; x++) {
1983         PyObject* o = PyList_GetItem(source, x);
1984         if (! PyInt_Check(o)) {
1985             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1986             return NULL;
1987         }
1988         temp[x] = (byte)PyInt_AsLong(o);
1989     }
1990     return temp;
1991 }
1992
1993
1994 int* int_LIST_helper(PyObject* source) {
1995     if (!PyList_Check(source)) {
1996         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1997         return NULL;
1998     }
1999     int count = PyList_Size(source);
2000     int* temp = new int[count];
2001     if (! temp) {
2002         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2003         return NULL;
2004     }
2005     for (int x=0; x<count; x++) {
2006         PyObject* o = PyList_GetItem(source, x);
2007         if (! PyInt_Check(o)) {
2008             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2009             return NULL;
2010         }
2011         temp[x] = PyInt_AsLong(o);
2012     }
2013     return temp;
2014 }
2015
2016
2017 long* long_LIST_helper(PyObject* source) {
2018     if (!PyList_Check(source)) {
2019         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2020         return NULL;
2021     }
2022     int count = PyList_Size(source);
2023     long* temp = new long[count];
2024     if (! temp) {
2025         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2026         return NULL;
2027     }
2028     for (int x=0; x<count; x++) {
2029         PyObject* o = PyList_GetItem(source, x);
2030         if (! PyInt_Check(o)) {
2031             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2032             return NULL;
2033         }
2034         temp[x] = PyInt_AsLong(o);
2035     }
2036     return temp;
2037 }
2038
2039
2040 char** string_LIST_helper(PyObject* source) {
2041     if (!PyList_Check(source)) {
2042         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2043         return NULL;
2044     }
2045     int count = PyList_Size(source);
2046     char** temp = new char*[count];
2047     if (! temp) {
2048         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2049         return NULL;
2050     }
2051     for (int x=0; x<count; x++) {
2052         PyObject* o = PyList_GetItem(source, x);
2053         if (! PyString_Check(o)) {
2054             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2055             return NULL;
2056         }
2057         temp[x] = PyString_AsString(o);
2058     }
2059     return temp;
2060 }
2061
2062 //---------------------------------------------------------------------------
2063 // NOTE: The following functions could really use some refactoring using
2064 // templates to make things somewhat simpler...
2065
2066 inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point)
2067 {
2068     // get the x value
2069     if (PyInt_Check(o1))
2070         point->x = (int)PyInt_AS_LONG(o1);
2071     else if (PyFloat_Check(o1))
2072         point->x = (int)PyFloat_AS_DOUBLE(o1);
2073     else if (PyNumber_Check(o1))
2074         point->x = (int)PyInt_AsLong(o1);
2075     else
2076         return false;
2077
2078     // get the y value
2079     if (PyInt_Check(o2))
2080         point->y = (int)PyInt_AS_LONG(o2);
2081     else if (PyFloat_Check(o2))
2082         point->y = (int)PyFloat_AS_DOUBLE(o2);
2083     else if (PyNumber_Check(o2))
2084         point->y = (int)PyInt_AsLong(o2);
2085     else
2086         return false;
2087
2088     return true;
2089
2090 // NOTE: This function used to have this code in it, but I don't know why it
2091 // is a problem nor what havok it will cause, so removing for now...
2092 //     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {
2093 //         // Disallow instances because they can cause havok
2094 //         return false;
2095 //     }
2096 }
2097
2098
2099 inline bool wxPoint2DFromObjects(PyObject* o1, PyObject* o2, wxPoint2D* point)
2100 {
2101     // get the x value
2102     if (PyInt_Check(o1))
2103         point->m_x = (double)PyInt_AS_LONG(o1);
2104     else if (PyFloat_Check(o1))
2105         point->m_x = (double)PyFloat_AS_DOUBLE(o1);
2106     else if (PyNumber_Check(o1))
2107         point->m_x = (double)PyFloat_AsDouble(o1);
2108     else
2109         return false;
2110
2111     // get the y value
2112     if (PyInt_Check(o2))
2113         point->m_y = (double)PyInt_AS_LONG(o2);
2114     else if (PyFloat_Check(o2))
2115         point->m_y = (double)PyFloat_AS_DOUBLE(o2);
2116     else if (PyNumber_Check(o2))
2117         point->m_y = (double)PyFloat_AsDouble(o2);
2118     else
2119         return false;
2120
2121     return true;
2122 }
2123
2124
2125
2126 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count)
2127 {
2128     int idx;
2129     wxPoint* temp;
2130     PyObject *o, *o1, *o2;
2131     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2132
2133     if (!PySequence_Check(source)) {
2134         goto error0;
2135     }
2136
2137     // The length of the sequence is returned in count.
2138     *count = PySequence_Length(source);
2139     if (*count < 0) {
2140         goto error0;
2141     }
2142
2143     temp = new wxPoint[*count];
2144     if (!temp) {
2145         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2146         return NULL;
2147     }
2148     for (idx=0; idx<*count; idx++) {
2149         // Get an item: try fast way first.
2150         if (isFast) {
2151             o = PySequence_Fast_GET_ITEM(source, idx);
2152         }
2153         else {
2154             o = PySequence_GetItem(source, idx);
2155             if (o == NULL) {
2156                 goto error1;
2157             }
2158         }
2159
2160         // Convert o to wxPoint.
2161         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2162             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2163             o1 = PySequence_Fast_GET_ITEM(o, 0);
2164             o2 = PySequence_Fast_GET_ITEM(o, 1);
2165             if (!wxPointFromObjects(o1, o2, &temp[idx])) {
2166                 goto error2;
2167             }
2168         }
2169         else if (wxPySwigInstance_Check(o)) {
2170             wxPoint* pt;
2171             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2172                 goto error2;
2173             }
2174             temp[idx] = *pt;
2175         }
2176         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2177             o1 = PySequence_GetItem(o, 0);
2178             o2 = PySequence_GetItem(o, 1);
2179             if (!wxPointFromObjects(o1, o2, &temp[idx])) {
2180                 goto error3;
2181             }
2182             Py_DECREF(o1);
2183             Py_DECREF(o2);
2184         }
2185         else {
2186             goto error2;
2187         }
2188         // Clean up.
2189         if (!isFast)
2190             Py_DECREF(o);
2191     }
2192     return temp;
2193
2194 error3:
2195     Py_DECREF(o1);
2196     Py_DECREF(o2);
2197 error2:
2198     if (!isFast)
2199         Py_DECREF(o);
2200 error1:
2201     delete [] temp;
2202 error0:
2203     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2204     return NULL;
2205 }
2206
2207
2208
2209 wxPoint2D* wxPoint2D_LIST_helper(PyObject* source, size_t *count)
2210 {
2211     size_t idx;
2212     wxPoint2D* temp;
2213     PyObject *o, *o1, *o2;
2214     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2215
2216     if (!PySequence_Check(source)) {
2217         goto error0;
2218     }
2219
2220     // The length of the sequence is returned in count.
2221     *count = PySequence_Length(source);
2222     if (*count < 0) {
2223         goto error0;
2224     }
2225
2226     temp = new wxPoint2D[*count];
2227     if (!temp) {
2228         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2229         return NULL;
2230     }
2231     for (idx=0; idx<*count; idx++) {
2232         // Get an item: try fast way first.
2233         if (isFast) {
2234             o = PySequence_Fast_GET_ITEM(source, idx);
2235         }
2236         else {
2237             o = PySequence_GetItem(source, idx);
2238             if (o == NULL) {
2239                 goto error1;
2240             }
2241         }
2242
2243         // Convert o to wxPoint.
2244         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2245             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2246             o1 = PySequence_Fast_GET_ITEM(o, 0);
2247             o2 = PySequence_Fast_GET_ITEM(o, 1);
2248             if (!wxPoint2DFromObjects(o1, o2, &temp[idx])) {
2249                 goto error2;
2250             }
2251         }
2252         else if (wxPySwigInstance_Check(o)) {
2253             wxPoint2D* pt;
2254             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint2D"))) {
2255                 goto error2;
2256             }
2257             temp[idx] = *pt;
2258         }
2259         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2260             o1 = PySequence_GetItem(o, 0);
2261             o2 = PySequence_GetItem(o, 1);
2262             if (!wxPoint2DFromObjects(o1, o2, &temp[idx])) {
2263                 goto error3;
2264             }
2265             Py_DECREF(o1);
2266             Py_DECREF(o2);
2267         }
2268         else {
2269             goto error2;
2270         }
2271         // Clean up.
2272         if (!isFast)
2273             Py_DECREF(o);
2274     }
2275     return temp;
2276
2277 error3:
2278     Py_DECREF(o1);
2279     Py_DECREF(o2);
2280 error2:
2281     if (!isFast)
2282         Py_DECREF(o);
2283 error1:
2284     delete [] temp;
2285 error0:
2286     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoint2Ds.");
2287     return NULL;
2288 }
2289
2290 //---------------------------------------------------------------------------
2291
2292
2293 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2294     if (!PyList_Check(source)) {
2295         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2296         return NULL;
2297     }
2298     int count = PyList_Size(source);
2299     wxBitmap** temp = new wxBitmap*[count];
2300     if (! temp) {
2301         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2302         return NULL;
2303     }
2304     for (int x=0; x<count; x++) {
2305         PyObject* o = PyList_GetItem(source, x);
2306         if (wxPySwigInstance_Check(o)) {
2307             wxBitmap*    pt;
2308             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2309                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2310                 return NULL;
2311             }
2312             temp[x] = pt;
2313         }
2314         else {
2315             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2316             return NULL;
2317         }
2318     }
2319     return temp;
2320 }
2321
2322
2323
2324 wxString* wxString_LIST_helper(PyObject* source) {
2325     if (!PyList_Check(source)) {
2326         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2327         return NULL;
2328     }
2329     int count = PyList_Size(source);
2330     wxString* temp = new wxString[count];
2331     if (! temp) {
2332         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2333         return NULL;
2334     }
2335     for (int x=0; x<count; x++) {
2336         PyObject* o = PyList_GetItem(source, x);
2337 #if PYTHON_API_VERSION >= 1009
2338         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2339             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2340             return NULL;
2341         }
2342 #else
2343         if (! PyString_Check(o)) {
2344             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2345             return NULL;
2346         }
2347 #endif
2348
2349         wxString* pStr = wxString_in_helper(o);
2350         temp[x] = *pStr;
2351         delete pStr;
2352     }
2353     return temp;
2354 }
2355
2356
2357 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2358     if (!PyList_Check(source)) {
2359         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2360         return NULL;
2361     }
2362     int count                = PyList_Size(source);
2363     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2364     if (! temp) {
2365         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2366         return NULL;
2367     }
2368     for (int x=0; x<count; x++) {
2369         PyObject* o = PyList_GetItem(source, x);
2370         if (wxPySwigInstance_Check(o)) {
2371             wxAcceleratorEntry* ae;
2372             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2373                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2374                 return NULL;
2375             }
2376             temp[x] = *ae;
2377         }
2378         else if (PyTuple_Check(o)) {
2379             PyObject* o1 = PyTuple_GetItem(o, 0);
2380             PyObject* o2 = PyTuple_GetItem(o, 1);
2381             PyObject* o3 = PyTuple_GetItem(o, 2);
2382             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2383         }
2384         else {
2385             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2386             return NULL;
2387         }
2388     }
2389     return temp;
2390 }
2391
2392
2393 wxPen** wxPen_LIST_helper(PyObject* source) {
2394     if (!PyList_Check(source)) {
2395         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2396         return NULL;
2397     }
2398     int count = PyList_Size(source);
2399     wxPen** temp = new wxPen*[count];
2400     if (!temp) {
2401         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2402         return NULL;
2403     }
2404     for (int x=0; x<count; x++) {
2405         PyObject* o = PyList_GetItem(source, x);
2406         if (wxPySwigInstance_Check(o)) {
2407             wxPen*  pt;
2408             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2409                 delete temp;
2410                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2411                 return NULL;
2412             }
2413             temp[x] = pt;
2414         }
2415         else {
2416             delete temp;
2417             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2418             return NULL;
2419         }
2420     }
2421     return temp;
2422 }
2423
2424
2425 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2426     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2427     PyObject *o1, *o2;
2428
2429     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2430         return false;
2431
2432     if (isFast) {
2433         o1 = PySequence_Fast_GET_ITEM(source, 0);
2434         o2 = PySequence_Fast_GET_ITEM(source, 1);
2435     }
2436     else {
2437         o1 = PySequence_GetItem(source, 0);
2438         o2 = PySequence_GetItem(source, 1);
2439     }
2440
2441     *i1 = PyInt_AsLong(o1);
2442     *i2 = PyInt_AsLong(o2);
2443
2444     if (! isFast) {
2445         Py_DECREF(o1);
2446         Py_DECREF(o2);
2447     }
2448     return true;
2449 }
2450
2451
2452 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2453     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2454     PyObject *o1, *o2, *o3, *o4;
2455
2456     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2457         return false;
2458
2459     if (isFast) {
2460         o1 = PySequence_Fast_GET_ITEM(source, 0);
2461         o2 = PySequence_Fast_GET_ITEM(source, 1);
2462         o3 = PySequence_Fast_GET_ITEM(source, 2);
2463         o4 = PySequence_Fast_GET_ITEM(source, 3);
2464     }
2465     else {
2466         o1 = PySequence_GetItem(source, 0);
2467         o2 = PySequence_GetItem(source, 1);
2468         o3 = PySequence_GetItem(source, 2);
2469         o4 = PySequence_GetItem(source, 3);
2470     }
2471
2472     *i1 = PyInt_AsLong(o1);
2473     *i2 = PyInt_AsLong(o2);
2474     *i3 = PyInt_AsLong(o3);
2475     *i4 = PyInt_AsLong(o4);
2476
2477     if (! isFast) {
2478         Py_DECREF(o1);
2479         Py_DECREF(o2);
2480         Py_DECREF(o3);
2481         Py_DECREF(o4);
2482     }
2483     return true;
2484 }
2485
2486
2487 //----------------------------------------------------------------------
2488
2489 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2490 {
2491     void* ptr;
2492
2493     if (wxPySwigInstance_Check(source) &&
2494         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2495         return true;
2496
2497     PyErr_Clear();
2498     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2499         return true;
2500
2501     return false;
2502 }
2503
2504 bool wxSize_helper(PyObject* source, wxSize** obj)
2505 {
2506     if (source == Py_None) {
2507         **obj = wxSize(-1,-1);
2508         return true;
2509     }
2510     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2511 }
2512
2513
2514 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2515 {
2516     if (source == Py_None) {
2517         **obj = wxPoint(-1,-1);
2518         return true;
2519     }
2520     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2521 }
2522
2523
2524
2525 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2526
2527     if (source == Py_None) {
2528         **obj = wxRealPoint(-1,-1);
2529         return true;
2530     }
2531
2532     // If source is an object instance then it may already be the right type
2533     if (wxPySwigInstance_Check(source)) {
2534         wxRealPoint* ptr;
2535         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2536             goto error;
2537         *obj = ptr;
2538         return true;
2539     }
2540     // otherwise a 2-tuple of floats is expected
2541     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2542         PyObject* o1 = PySequence_GetItem(source, 0);
2543         PyObject* o2 = PySequence_GetItem(source, 1);
2544         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2545             Py_DECREF(o1);
2546             Py_DECREF(o2);
2547             goto error;
2548         }
2549         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2550         Py_DECREF(o1);
2551         Py_DECREF(o2);
2552         return true;
2553     }
2554
2555  error:
2556     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2557     return false;
2558 }
2559
2560
2561
2562 bool wxRect_helper(PyObject* source, wxRect** obj) {
2563
2564     if (source == Py_None) {
2565         **obj = wxRect(-1,-1,-1,-1);
2566         return true;
2567     }
2568
2569     // If source is an object instance then it may already be the right type
2570     if (wxPySwigInstance_Check(source)) {
2571         wxRect* ptr;
2572         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2573             goto error;
2574         *obj = ptr;
2575         return true;
2576     }
2577     // otherwise a 4-tuple of integers is expected
2578     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2579         PyObject* o1 = PySequence_GetItem(source, 0);
2580         PyObject* o2 = PySequence_GetItem(source, 1);
2581         PyObject* o3 = PySequence_GetItem(source, 2);
2582         PyObject* o4 = PySequence_GetItem(source, 3);
2583         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2584             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2585             Py_DECREF(o1);
2586             Py_DECREF(o2);
2587             Py_DECREF(o3);
2588             Py_DECREF(o4);
2589             goto error;
2590         }
2591         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2592                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2593         Py_DECREF(o1);
2594         Py_DECREF(o2);
2595         Py_DECREF(o3);
2596         Py_DECREF(o4);
2597         return true;
2598     }
2599
2600  error:
2601     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2602     return false;
2603 }
2604
2605
2606
2607 bool wxColour_helper(PyObject* source, wxColour** obj) {
2608
2609     if (source == Py_None) {
2610         **obj = wxNullColour;
2611         return true;
2612     }
2613
2614     // If source is an object instance then it may already be the right type
2615     if (wxPySwigInstance_Check(source)) {
2616         wxColour* ptr;
2617         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2618             goto error;
2619         *obj = ptr;
2620         return true;
2621     }
2622     // otherwise check for a string
2623     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2624         wxString spec = Py2wxString(source);
2625         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2626             long red, green, blue;
2627             red = green = blue = 0;
2628             spec.Mid(1,2).ToLong(&red,   16);
2629             spec.Mid(3,2).ToLong(&green, 16);
2630             spec.Mid(5,2).ToLong(&blue,  16);
2631
2632             **obj = wxColour(red, green, blue);
2633             return true;
2634         }
2635         else {                                       // it's a colour name
2636             **obj = wxColour(spec);
2637             return true;
2638         }
2639     }
2640     // last chance: 3-tuple or 4-tuple of integers is expected
2641     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2642         PyObject* o1 = PySequence_GetItem(source, 0);
2643         PyObject* o2 = PySequence_GetItem(source, 1);
2644         PyObject* o3 = PySequence_GetItem(source, 2);
2645         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2646             Py_DECREF(o1);
2647             Py_DECREF(o2);
2648             Py_DECREF(o3);
2649             goto error;
2650         }
2651         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2652         Py_DECREF(o1);
2653         Py_DECREF(o2);
2654         Py_DECREF(o3);
2655         return true;
2656     }
2657     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2658         PyObject* o1 = PySequence_GetItem(source, 0);
2659         PyObject* o2 = PySequence_GetItem(source, 1);
2660         PyObject* o3 = PySequence_GetItem(source, 2);
2661         PyObject* o4 = PySequence_GetItem(source, 3);
2662         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2663             Py_DECREF(o1);
2664             Py_DECREF(o2);
2665             Py_DECREF(o3);
2666             Py_DECREF(o4);
2667             goto error;
2668         }
2669         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3), PyInt_AsLong(o4));
2670         Py_DECREF(o1);
2671         Py_DECREF(o2);
2672         Py_DECREF(o3);
2673         Py_DECREF(o4);
2674         return true;
2675     }
2676
2677  error:
2678     PyErr_SetString(PyExc_TypeError,
2679                     "Expected a wxColour object, a string containing a colour name or '#RRGGBB', or a 3- or 4-tuple of integers.");
2680     return false;
2681 }
2682
2683
2684 bool wxColour_typecheck(PyObject* source) {
2685
2686     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2687         return true;
2688
2689     if (PyString_Check(source) || PyUnicode_Check(source))
2690         return true;
2691
2692     return false;
2693 }
2694
2695
2696
2697 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2698
2699     if (source == Py_None) {
2700         **obj = wxPoint2D(-1,-1);
2701         return true;
2702     }
2703
2704     // If source is an object instance then it may already be the right type
2705     if (wxPySwigInstance_Check(source)) {
2706         wxPoint2D* ptr;
2707         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2708             goto error;
2709         *obj = ptr;
2710         return true;
2711     }
2712     // otherwise a length-2 sequence of floats is expected
2713     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2714         PyObject* o1 = PySequence_GetItem(source, 0);
2715         PyObject* o2 = PySequence_GetItem(source, 1);
2716         // This should really check for floats, not numbers -- but that would break code.
2717         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2718             Py_DECREF(o1);
2719             Py_DECREF(o2);
2720             goto error;
2721         }
2722         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2723         Py_DECREF(o1);
2724         Py_DECREF(o2);
2725         return true;
2726     }
2727  error:
2728     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2D object.");
2729     return false;
2730 }
2731
2732
2733 //----------------------------------------------------------------------
2734
2735 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr)
2736 {
2737     PyObject* list = PyList_New(0);
2738     for (size_t i=0; i < arr.GetCount(); i++) {
2739 #if wxUSE_UNICODE
2740         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2741 #else
2742         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2743 #endif
2744         PyList_Append(list, str);
2745         Py_DECREF(str);
2746     }
2747     return list;
2748 }
2749
2750
2751 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr)
2752 {
2753     PyObject* list = PyList_New(0);
2754     for (size_t i=0; i < arr.GetCount(); i++) {
2755         PyObject* number = PyInt_FromLong(arr[i]);
2756         PyList_Append(list, number);
2757         Py_DECREF(number);
2758     }
2759     return list;
2760 }
2761
2762
2763 PyObject* wxArrayDouble2PyList_helper(const wxArrayDouble& arr)
2764 {
2765     PyObject* list = PyList_New(0);
2766     for (size_t i=0; i < arr.GetCount(); i++) {
2767         PyObject* number = PyFloat_FromDouble(arr[i]);
2768         PyList_Append(list, number);
2769         Py_DECREF(number);
2770     }
2771     return list;
2772 }
2773
2774
2775 //----------------------------------------------------------------------
2776 // wxPyImageHandler methods
2777 //
2778 // TODO: Switch these to use wxPython's standard macros and helper classes
2779 //       for calling callbacks.
2780
2781 PyObject* wxPyImageHandler::m_DoCanRead_Name = NULL;
2782 PyObject* wxPyImageHandler::m_GetImageCount_Name = NULL;
2783 PyObject* wxPyImageHandler::m_LoadFile_Name = NULL;
2784 PyObject* wxPyImageHandler::m_SaveFile_Name = NULL;
2785
2786 PyObject* wxPyImageHandler::py_InputStream(wxInputStream* stream) {
2787     return wxPyConstructObject(new wxPyInputStream(stream),
2788                                wxT("wxPyInputStream"), 0);
2789 }
2790
2791 PyObject* wxPyImageHandler::py_Image(wxImage* image) {
2792     return wxPyConstructObject(image, wxT("wxImage"), 0);
2793 }
2794
2795 PyObject* wxPyImageHandler::py_OutputStream(wxOutputStream* stream) {
2796     return wxPyConstructObject(stream, wxT("wxOutputStream"), 0);
2797 }
2798
2799 wxPyImageHandler::wxPyImageHandler():
2800     m_self(NULL)
2801 {
2802     if (!m_DoCanRead_Name) {
2803         m_DoCanRead_Name = PyString_FromString("DoCanRead");
2804         m_GetImageCount_Name = PyString_FromString("GetImageCount");
2805         m_LoadFile_Name = PyString_FromString("LoadFile");
2806         m_SaveFile_Name = PyString_FromString("SaveFile");
2807     }
2808 }
2809
2810 wxPyImageHandler::~wxPyImageHandler() {
2811     if (m_self) {
2812         Py_DECREF(m_self);
2813         m_self = NULL;
2814     }
2815 }
2816
2817 void wxPyImageHandler::_SetSelf(PyObject *self) {
2818     // should check here for isinstance(PyImageHandler) ??
2819     m_self = self;
2820     Py_INCREF(m_self);
2821 }
2822
2823 bool wxPyImageHandler::DoCanRead(wxInputStream& stream) {
2824     // check if our object has this method
2825     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2826     if (!m_self || !PyObject_HasAttr(m_self, m_DoCanRead_Name)) {
2827         wxPyEndBlockThreads(blocked);
2828         return false;
2829     }
2830
2831     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_DoCanRead_Name,
2832                                                py_InputStream(&stream), NULL);
2833     bool retval = false;
2834     if (res) {
2835         retval = PyInt_AsLong(res);
2836         Py_DECREF(res);
2837         PyErr_Clear();
2838     }
2839     else
2840         PyErr_Print();
2841     wxPyEndBlockThreads(blocked);
2842     return retval;
2843 }
2844
2845 bool wxPyImageHandler::LoadFile( wxImage* image, wxInputStream& stream,
2846                                  bool verbose, int index ) {
2847     // check if our object has this method
2848     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2849     if (!m_self || !PyObject_HasAttr(m_self, m_LoadFile_Name)) {
2850         wxPyEndBlockThreads(blocked);
2851         return false;
2852     }
2853     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_LoadFile_Name,
2854                                                py_Image(image),
2855                                                py_InputStream(&stream),
2856                                                PyInt_FromLong(verbose),
2857                                                PyInt_FromLong(index),
2858                                                NULL);
2859     bool retval = false;
2860     if (res) {
2861         retval = PyInt_AsLong(res);
2862         Py_DECREF(res);
2863         PyErr_Clear();
2864     } else
2865         PyErr_Print();
2866     wxPyEndBlockThreads(blocked);
2867     return retval;
2868 }
2869
2870 bool wxPyImageHandler::SaveFile( wxImage* image, wxOutputStream& stream,
2871                                  bool verbose ) {
2872     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2873     if (!m_self || !PyObject_HasAttr(m_self, m_SaveFile_Name)) {
2874         wxPyEndBlockThreads(blocked);
2875         return false;
2876     }
2877     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_SaveFile_Name,
2878                                                py_Image(image),
2879                                                py_OutputStream(&stream),
2880                                                PyInt_FromLong(verbose),
2881                                                NULL);
2882     bool retval = false;
2883     if(res) {
2884         retval=PyInt_AsLong(res);
2885         Py_DECREF(res);
2886         PyErr_Clear();
2887     } else
2888         PyErr_Print();
2889     wxPyEndBlockThreads(blocked);
2890     return retval;
2891 }
2892
2893 int wxPyImageHandler::GetImageCount( wxInputStream& stream ) {
2894     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2895     if (!m_self || !PyObject_HasAttr(m_self, m_GetImageCount_Name)) {
2896         wxPyEndBlockThreads(blocked);
2897         return 1;
2898     }
2899     PyObject *res=PyObject_CallMethodObjArgs(m_self, m_GetImageCount_Name,
2900                                              py_InputStream(&stream),
2901                                              NULL);
2902     int retval = 1;
2903     if(res) {
2904         retval=PyInt_AsLong(res);
2905         Py_DECREF(res);
2906         PyErr_Clear();
2907     } else
2908         PyErr_Print();
2909     wxPyEndBlockThreads(blocked);
2910     return retval;
2911 }
2912
2913
2914 //----------------------------------------------------------------------
2915 // Function to test if the Display (or whatever is the platform equivallent)
2916 // can be connected to.  This is accessable from wxPython as a staticmethod of
2917 // wx.App called DisplayAvailable().
2918
2919
2920 bool wxPyTestDisplayAvailable()
2921 {
2922 #ifdef __WXGTK__
2923     Display* display;
2924     display = XOpenDisplay(NULL);
2925     if (display == NULL)
2926         return false;
2927     XCloseDisplay(display);
2928     return true;
2929 #endif
2930
2931 #ifdef __WXMAC__
2932     // This is adapted from Python's Mac/Modules/MacOS.c in the
2933     // MacOS_WMAvailable function.
2934     bool rv;
2935     ProcessSerialNumber psn;
2936
2937     /*
2938     ** This is a fairly innocuous call to make if we don't have a window
2939     ** manager, or if we have no permission to talk to it. It will print
2940     ** a message on stderr, but at least it won't abort the process.
2941     ** It appears the function caches the result itself, and it's cheap, so
2942     ** no need for us to cache.
2943     */
2944 #ifdef kCGNullDirectDisplay
2945     /* On 10.1 CGMainDisplayID() isn't available, and
2946     ** kCGNullDirectDisplay isn't defined.
2947     */
2948     if (CGMainDisplayID() == 0) {
2949         rv = false;
2950     } else
2951 #endif
2952     {
2953         // Also foreground the application on the first call as a side-effect.
2954         if (GetCurrentProcess(&psn) < 0 || SetFrontProcess(&psn) < 0) {
2955             rv = false;
2956         } else {
2957             rv = true;
2958         }
2959     }
2960     return rv;
2961 #endif
2962
2963 #ifdef __WXMSW__
2964     // TODO...
2965     return true;
2966 #endif
2967 }
2968
2969
2970 //----------------------------------------------------------------------
2971 //----------------------------------------------------------------------
2972
2973
2974
2975