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 #ifdef __WXGTK20__
  33 #include <wx/gtk/win_gtk.h>
  34 #else
  35 #include <wx/gtk1/win_gtk.h>
  36 #endif
  37 #define GetXWindow(wxwin) (wxwin)->m_wxwindow ? \
  38                           GDK_WINDOW_XWINDOW(GTK_PIZZA((wxwin)->m_wxwindow)->bin_window) : \
  39                           GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
  40 #include <locale.h>
  41 #endif
  42
  43 #ifdef __WXX11__
  44 #include "wx/x11/privx.h"
  45 #define GetXWindow(wxwin)   ((Window)(wxwin)->GetHandle())
  46 #endif
  47
  48 #ifdef __WXMAC__
  49 #include <wx/mac/private.h>
  50 #endif
  51
  52 #include <wx/clipbrd.h>
  53 #include <wx/mimetype.h>
  54 #include <wx/image.h>
  55
  56 //----------------------------------------------------------------------
  57
  58 #if PYTHON_API_VERSION < 1009 && wxUSE_UNICODE
  59 #error Python must support Unicode to use wxWindows Unicode
  60 #endif
  61
  62 //----------------------------------------------------------------------
  63
  64 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  65 bool wxPyDoCleanup = false;
  66 bool wxPyDoingCleanup = false;
  67
  68
  69 #ifdef WXP_WITH_THREAD
  70 #if !wxPyUSE_GIL_STATE
  71 struct wxPyThreadState {
  72     unsigned long  tid;
  73     PyThreadState* tstate;
  74
  75     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  76         : tid(_tid), tstate(_tstate) {}
  77 };
  78
  79 #include <wx/dynarray.h>
  80 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  81 #include <wx/arrimpl.cpp>
  82 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  83
  84 wxPyThreadStateArray* wxPyTStates = NULL;
  85 wxMutex*              wxPyTMutex = NULL;
  86
  87 #endif
  88 #endif
  89
  90
  91 #define DEFAULTENCODING_SIZE 64
  92 static char wxPyDefaultEncoding[DEFAULTENCODING_SIZE] = "ascii";
  93
  94 static PyObject* wxPython_dict = NULL;
  95 static PyObject* wxPyAssertionError = NULL;
  96 static PyObject* wxPyNoAppError = NULL;
  97
  98 PyObject* wxPyPtrTypeMap = NULL;
  99
 100
 101 #ifdef __WXMSW__             // If building for win32...
 102 //----------------------------------------------------------------------
 103 // This gets run when the DLL is loaded.  We just need to save a handle.
 104 //----------------------------------------------------------------------
 105
 106 extern "C"
 107 BOOL WINAPI DllMain(
 108     HINSTANCE   hinstDLL,    // handle to DLL module
 109     DWORD       fdwReason,   // reason for calling function
 110     LPVOID      lpvReserved  // reserved
 111    )
 112 {
 113     // If wxPython is embedded in another wxWidgets app then
 114     // the instance has already been set.
 115     if (! wxGetInstance())
 116         wxSetInstance(hinstDLL);
 117     return true;
 118 }
 119 #endif
 120
 121 //----------------------------------------------------------------------
 122 // Classes for implementing the wxp main application shell.
 123 //----------------------------------------------------------------------
 124
 125 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 126
 127
 128 wxPyApp::wxPyApp() {
 129     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 130     m_startupComplete = false;
 131 }
 132
 133
 134 wxPyApp::~wxPyApp() {
 135     wxPythonApp = NULL;
 136     wxApp::SetInstance(NULL);
 137 }
 138
 139
 140 // This one isn't acutally called...  We fake it with _BootstrapApp
 141 bool wxPyApp::OnInit() {
 142     return false;
 143 }
 144
 145
 146 int  wxPyApp::MainLoop() {
 147     int retval = 0;
 148
 149     DeletePendingObjects();
 150     bool initialized = wxTopLevelWindows.GetCount() != 0;
 151     if (initialized) {
 152         if ( m_exitOnFrameDelete == Later ) {
 153             m_exitOnFrameDelete = Yes;
 154         }
 155
 156         retval = wxApp::MainLoop();
 157         OnExit();
 158     }
 159     return retval;
 160 }
 161
 162
 163 bool wxPyApp::OnInitGui() {
 164     bool rval=true;
 165     wxApp::OnInitGui();  // in this case always call the base class version
 166     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 167     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 168         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 169     wxPyEndBlockThreads(blocked);
 170     return rval;
 171 }
 172
 173
 174 int wxPyApp::OnExit() {
 175     int rval=0;
 176     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 177     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 178         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 179     wxPyEndBlockThreads(blocked);
 180     wxApp::OnExit();  // in this case always call the base class version
 181     return rval;
 182 }
 183
 184
 185
 186 void wxPyApp::ExitMainLoop() {
 187     bool found;
 188     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 189     if ((found = wxPyCBH_findCallback(m_myInst, "ExitMainLoop")))
 190         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 191     wxPyEndBlockThreads(blocked);
 192     if (! found)
 193         wxApp::ExitMainLoop();
 194 }
 195
 196
 197 #ifdef __WXDEBUG__
 198 void wxPyApp::OnAssertFailure(const wxChar *file,
 199                               int line,
 200                               const wxChar *func,
 201                               const wxChar *cond,
 202                               const wxChar *msg)
 203 {
 204     // if we're not fully initialized then just log the error
 205     if (! m_startupComplete) {
 206         wxString buf;
 207         buf.Alloc(4096);
 208         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 209                    file, line, cond);
 210         if ( func && *func )
 211             buf << wxT(" in ") << func << wxT("()");
 212         if (msg != NULL)
 213             buf << wxT(": ") << msg;
 214
 215         wxLogDebug(buf);
 216         return;
 217     }
 218
 219     // If the OnAssert is overloaded in the Python class then call it...
 220     bool found;
 221     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 222     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 223         PyObject* fso = wx2PyString(file);
 224         PyObject* cso = wx2PyString(file);
 225         PyObject* mso;
 226         if (msg != NULL)
 227             mso = wx2PyString(file);
 228         else {
 229             mso = Py_None; Py_INCREF(Py_None);
 230         }
 231         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 232         Py_DECREF(fso);
 233         Py_DECREF(cso);
 234         Py_DECREF(mso);
 235     }
 236     wxPyEndBlockThreads(blocked);
 237
 238     // ...otherwise do our own thing with it
 239     if (! found) {
 240         // ignore it?
 241         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 242             return;
 243
 244         // turn it into a Python exception?
 245         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 246             wxString buf;
 247             buf.Alloc(4096);
 248             buf.Printf(wxT("C++ assertion \"%s\" failed at %s(%d)"), cond, file, line);
 249             if ( func && *func )
 250                 buf << wxT(" in ") << func << wxT("()");
 251             if (msg != NULL)
 252                 buf << wxT(": ") << msg;
 253
 254
 255             // set the exception
 256             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 257             PyObject* s = wx2PyString(buf);
 258             PyErr_SetObject(wxPyAssertionError, s);
 259             Py_DECREF(s);
 260             wxPyEndBlockThreads(blocked);
 261
 262             // Now when control returns to whatever API wrapper was called from
 263             // Python it should detect that an exception is set and will return
 264             // NULL, signalling the exception to Python.
 265         }
 266
 267         // Send it to the normal log destination, but only if
 268         // not _DIALOG because it will call this too
 269         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 270             wxString buf;
 271             buf.Alloc(4096);
 272             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 273                        file, line, cond);
 274             if ( func && *func )
 275                 buf << wxT(" in ") << func << wxT("()");
 276             if (msg != NULL)
 277                 buf << wxT(": ") << msg;
 278             wxLogDebug(buf);
 279         }
 280
 281         // do the normal wx assert dialog?
 282         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 283             wxApp::OnAssertFailure(file, line, func, cond, msg);
 284     }
 285 }
 286 #endif
 287
 288     // For catching Apple Events
 289 void wxPyApp::MacOpenFile(const wxString &fileName)
 290 {
 291     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 292     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 293         PyObject* s = wx2PyString(fileName);
 294         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 295         Py_DECREF(s);
 296     }
 297     wxPyEndBlockThreads(blocked);
 298 }
 299
 300 void wxPyApp::MacPrintFile(const wxString &fileName)
 301 {
 302     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 303     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 304         PyObject* s = wx2PyString(fileName);
 305         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 306         Py_DECREF(s);
 307     }
 308     wxPyEndBlockThreads(blocked);
 309 }
 310
 311 void wxPyApp::MacNewFile()
 312 {
 313     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 314     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 315         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 316     wxPyEndBlockThreads(blocked);
 317 }
 318
 319 void wxPyApp::MacReopenApp()
 320 {
 321     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 322     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 323         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 324     wxPyEndBlockThreads(blocked);
 325 }
 326
 327
 328 /*static*/
 329 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 330     return 0;
 331 }
 332
 333 /*static*/
 334 long wxPyApp::GetMacAboutMenuItemId() {
 335 #ifdef __WXMAC__
 336     return s_macAboutMenuItemId;
 337 #else
 338     return 0;
 339 #endif
 340 }
 341
 342 /*static*/
 343 long wxPyApp::GetMacPreferencesMenuItemId() {
 344 #ifdef __WXMAC__
 345     return s_macPreferencesMenuItemId;
 346 #else
 347     return 0;
 348 #endif
 349 }
 350
 351 /*static*/
 352 long wxPyApp::GetMacExitMenuItemId() {
 353 #ifdef __WXMAC__
 354     return s_macExitMenuItemId;
 355 #else
 356     return 0;
 357 #endif
 358 }
 359
 360 /*static*/
 361 wxString wxPyApp::GetMacHelpMenuTitleName() {
 362 #ifdef __WXMAC__
 363     return s_macHelpMenuTitleName;
 364 #else
 365     return wxEmptyString;
 366 #endif
 367 }
 368
 369 /*static*/
 370 void wxPyApp::SetMacSupportPCMenuShortcuts(bool) {
 371 }
 372
 373 /*static*/
 374 void wxPyApp::SetMacAboutMenuItemId(long val) {
 375 #ifdef __WXMAC__
 376     s_macAboutMenuItemId = val;
 377 #endif
 378 }
 379
 380 /*static*/
 381 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 382 #ifdef __WXMAC__
 383     s_macPreferencesMenuItemId = val;
 384 #endif
 385 }
 386
 387 /*static*/
 388 void wxPyApp::SetMacExitMenuItemId(long val) {
 389 #ifdef __WXMAC__
 390     s_macExitMenuItemId = val;
 391 #endif
 392 }
 393
 394 /*static*/
 395 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 396 #ifdef __WXMAC__
 397     s_macHelpMenuTitleName = val;
 398 #endif
 399 }
 400
 401
 402 // This finishes the initialization of wxWindows and then calls the OnInit
 403 // that should be present in the derived (Python) class.
 404 void wxPyApp::_BootstrapApp()
 405 {
 406     static      bool haveInitialized = false;
 407     bool        result;
 408     wxPyBlock_t     blocked;
 409     PyObject*   retval = NULL;
 410     PyObject*   pyint  = NULL;
 411
 412
 413     // Only initialize wxWidgets once
 414     if (! haveInitialized) {
 415
 416         // Get any command-line args passed to this program from the sys module
 417         int    argc = 0;
 418         char** argv = NULL;
 419         blocked = wxPyBeginBlockThreads();
 420
 421         PyObject* sysargv = PySys_GetObject("argv");
 422         PyObject* executable = PySys_GetObject("executable");
 423
 424         if (sysargv != NULL && executable != NULL) {
 425             argc = PyList_Size(sysargv) + 1;
 426             argv = new char*[argc+1];
 427             argv[0] = strdup(PyString_AsString(executable));
 428             int x;
 429             for(x=1; x<argc; x++) {
 430                 PyObject *pyArg = PyList_GetItem(sysargv, x-1);
 431                 argv[x] = strdup(PyString_AsString(pyArg));
 432             }
 433             argv[argc] = NULL;
 434         }
 435         wxPyEndBlockThreads(blocked);
 436
 437         // Initialize wxWidgets
 438         result = wxEntryStart(argc, argv);
 439         // wxApp takes ownership of the argv array, don't delete it here
 440
 441         blocked = wxPyBeginBlockThreads();
 442         if (! result)  {
 443             PyErr_SetString(PyExc_SystemError,
 444                             "wxEntryStart failed, unable to initialize wxWidgets!"
 445 #ifdef __WXGTK__
 446                             "  (Is DISPLAY set properly?)"
 447 #endif
 448                 );
 449             goto error;
 450         }
 451
 452         // On wxGTK the locale will be changed to match the system settings,
 453         // but Python before 2.4 needs to have LC_NUMERIC set to "C" in order
 454         // for the floating point conversions and such to work right.
 455 #if defined(__WXGTK__) && PY_VERSION_HEX < 0x02040000
 456         setlocale(LC_NUMERIC, "C");
 457 #endif
 458
 459 //        wxSystemOptions::SetOption(wxT("mac.textcontrol-use-mlte"), 1);
 460
 461         wxPyEndBlockThreads(blocked);
 462         haveInitialized = true;
 463     }
 464     else {
 465         this->argc = 0;
 466         this->argv = NULL;
 467     }
 468
 469
 470     // It's now ok to generate exceptions for assertion errors.
 471     wxPythonApp->SetStartupComplete(true);
 472
 473
 474     // Call the Python wxApp's OnPreInit and OnInit functions
 475     blocked = wxPyBeginBlockThreads();
 476     if (wxPyCBH_findCallback(m_myInst, "OnPreInit")) {
 477         PyObject* method = m_myInst.GetLastFound();
 478         PyObject* argTuple = PyTuple_New(0);
 479         retval = PyEval_CallObject(method, argTuple);
 480         m_myInst.clearRecursionGuard(method);
 481         Py_DECREF(argTuple);
 482         Py_DECREF(method);
 483         if (retval == NULL)
 484             goto error;
 485     }
 486     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 487
 488         PyObject* method = m_myInst.GetLastFound();
 489         PyObject* argTuple = PyTuple_New(0);
 490         retval = PyEval_CallObject(method, argTuple);
 491         m_myInst.clearRecursionGuard(method);
 492         Py_DECREF(argTuple);
 493         Py_DECREF(method);
 494         if (retval == NULL)
 495             // Don't PyErr_Print here, let the exception in this case go back
 496             // up to the wx.PyApp.__init__ scope.
 497             goto error;
 498
 499         pyint = PyNumber_Int(retval);
 500         if (! pyint) {
 501             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 502             goto error;
 503         }
 504         result = PyInt_AS_LONG(pyint);
 505     }
 506     else {
 507         // Is it okay if there is no OnInit?  Probably so...
 508         result = true;
 509     }
 510
 511     if (! result) {
 512         PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
 513     }
 514
 515  error:
 516     Py_XDECREF(retval);
 517     Py_XDECREF(pyint);
 518
 519     wxPyEndBlockThreads(blocked);
 520 };
 521
 522 //---------------------------------------------------------------------
 523 //----------------------------------------------------------------------
 524
 525
 526 #if 0
 527 static char* wxPyCopyCString(const wxChar* src)
 528 {
 529     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 530     size_t len = strlen(buff);
 531     char*  dest = new char[len+1];
 532     strcpy(dest, buff);
 533     return dest;
 534 }
 535
 536 #if wxUSE_UNICODE
 537 static char* wxPyCopyCString(const char* src)   // we need a char version too
 538 {
 539     size_t len = strlen(src);
 540     char*  dest = new char[len+1];
 541     strcpy(dest, src);
 542     return dest;
 543 }
 544 #endif
 545
 546 static wxChar* wxPyCopyWString(const char *src)
 547 {
 548     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 549     wxString str(src, *wxConvCurrent);
 550     return copystring(str);
 551 }
 552
 553 #if wxUSE_UNICODE
 554 static wxChar* wxPyCopyWString(const wxChar *src)
 555 {
 556     return copystring(src);
 557 }
 558 #endif
 559 #endif
 560
 561
 562 inline const char* dropwx(const char* name) {
 563     if (name[0] == 'w' && name[1] == 'x')
 564         return name+2;
 565     else
 566         return name;
 567 }
 568
 569 //----------------------------------------------------------------------
 570
 571 // This function is called when the wx._core_ module is imported to do some
 572 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 573 // wxPyApp::_BootstrapApp
 574 void __wxPyPreStart(PyObject* moduleDict)
 575 {
 576
 577 #ifdef __WXMSW__
 578 //     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF
 579 //                     | _CRTDBG_CHECK_ALWAYS_DF
 580 //                     | _CRTDBG_DELAY_FREE_MEM_DF
 581 //         );
 582 #endif
 583
 584 #ifdef WXP_WITH_THREAD
 585 #if wxPyUSE_GIL_STATE
 586     PyEval_InitThreads();
 587 #else
 588     PyEval_InitThreads();
 589     wxPyTStates = new wxPyThreadStateArray;
 590     wxPyTMutex = new wxMutex;
 591
 592     // Save the current (main) thread state in our array
 593     PyThreadState* tstate = wxPyBeginAllowThreads();
 594     wxPyEndAllowThreads(tstate);
 595 #endif
 596 #endif
 597
 598     // Ensure that the build options in the DLL (or whatever) match this build
 599     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 600
 601     wxInitAllImageHandlers();
 602 }
 603
 604
 605
 606 void __wxPyCleanup() {
 607     wxPyDoingCleanup = true;
 608     if (wxPyDoCleanup) {
 609         wxPyDoCleanup = false;
 610         wxEntryCleanup();
 611     }
 612 #ifdef WXP_WITH_THREAD
 613 #if !wxPyUSE_GIL_STATE
 614     delete wxPyTMutex;
 615     wxPyTMutex = NULL;
 616     wxPyTStates->Empty();
 617     delete wxPyTStates;
 618     wxPyTStates = NULL;
 619 #endif
 620 #endif
 621 }
 622
 623
 624 // Save a reference to the dictionary of the wx._core module, and inject
 625 // a few more things into it.
 626 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 627 {
 628
 629     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 630         return NULL;
 631
 632     if (!PyDict_Check(wxPython_dict)) {
 633         PyErr_SetString(PyExc_TypeError,
 634                         "_wxPySetDictionary must have dictionary object!");
 635         return NULL;
 636     }
 637
 638     if (! wxPyPtrTypeMap)
 639         wxPyPtrTypeMap = PyDict_New();
 640     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 641
 642     // Create an exception object to use for wxASSERTions
 643     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 644                                             PyExc_AssertionError, NULL);
 645     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 646
 647     // Create an exception object to use when the app object hasn't been created yet
 648     wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
 649                                         PyExc_RuntimeError, NULL);
 650     PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
 651
 652
 653
 654 #ifdef __WXMOTIF__
 655 #define wxPlatform "__WXMOTIF__"
 656 #define wxPlatName "wxMotif"
 657 #endif
 658 #ifdef __WXX11__
 659 #define wxPlatform "__WXX11__"
 660 #define wxPlatName "wxX11"
 661 #endif
 662 #ifdef __WXGTK__
 663 #define wxPlatform "__WXGTK__"
 664 #define wxPlatName "wxGTK"
 665 #endif
 666 #ifdef __WXMSW__
 667 #define wxPlatform "__WXMSW__"
 668 #define wxPlatName "wxMSW"
 669 #endif
 670 #ifdef __WXMAC__
 671 #define wxPlatform "__WXMAC__"
 672 #define wxPlatName "wxMac"
 673 #endif
 674
 675 #ifdef __WXDEBUG__
 676     int wxdebug = 1;
 677 #else
 678     int wxdebug = 0;
 679 #endif
 680
 681     // These should be deprecated in favor of the PlatformInfo tuple built below...
 682     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 683     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 684     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 685
 686     // Make a tuple of strings that gives more info about the platform.
 687     PyObject* PlatInfo = PyList_New(0);
 688     PyObject* obj;
 689
 690 #define _AddInfoString(st) \
 691     obj = PyString_FromString(st); \
 692     PyList_Append(PlatInfo, obj); \
 693     Py_DECREF(obj)
 694
 695     _AddInfoString(wxPlatform);
 696     _AddInfoString(wxPlatName);
 697 #if wxUSE_UNICODE
 698     _AddInfoString("unicode");
 699 #else
 700     _AddInfoString("ansi");
 701 #endif
 702 #ifdef __WXGTK__
 703 #ifdef __WXGTK20__
 704     _AddInfoString("gtk2");
 705 #else
 706     _AddInfoString("gtk1");
 707 #endif
 708 #endif
 709 #ifdef __WXDEBUG__
 710     _AddInfoString("wx-assertions-on");
 711 #else
 712     _AddInfoString("wx-assertions-off");
 713 #endif
 714     _AddInfoString(wxPy_SWIG_VERSION);
 715 #ifdef __WXMAC__
 716     #if wxMAC_USE_CORE_GRAPHICS
 717         _AddInfoString("mac-cg");
 718     #else
 719         _AddInfoString("mac-qd");
 720     #endif
 721     #if wxMAC_USE_NATIVE_TOOLBAR
 722         _AddInfoString("mac-native-tb");
 723     #else
 724         _AddInfoString("mac-no-native-tb");
 725     #endif
 726 #endif
 727
 728 #undef _AddInfoString
 729
 730     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 731     Py_DECREF(PlatInfo);
 732     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 733
 734     RETURN_NONE();
 735 }
 736
 737
 738
 739 //---------------------------------------------------------------------------
 740
 741 // Check for existence of a wxApp, setting an exception if there isn't one.
 742 // This doesn't need to aquire the GIL because it should only be called from
 743 // an %exception before the lock is released.
 744
 745 bool wxPyCheckForApp() {
 746     if (wxTheApp != NULL)
 747         return true;
 748     else {
 749         PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
 750         return false;
 751     }
 752 }
 753
 754 //---------------------------------------------------------------------------
 755
 756 void wxPyUserData_dtor(wxPyUserData* self) {
 757     if (! wxPyDoingCleanup) {
 758         wxPyBlock_t blocked = wxPyBeginBlockThreads();
 759         Py_DECREF(self->m_obj);
 760         self->m_obj = NULL;
 761         wxPyEndBlockThreads(blocked);
 762     }
 763 }
 764
 765
 766 void wxPyClientData_dtor(wxPyClientData* self) {
 767     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 768                                         // may have already garbage collected the object...
 769         if (self->m_incRef) {
 770             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 771             Py_DECREF(self->m_obj);
 772             wxPyEndBlockThreads(blocked);
 773         }
 774         self->m_obj = NULL;
 775     }
 776 }
 777
 778
 779
 780 // This is called when an OOR controled object is being destroyed.  Although
 781 // the C++ object is going away there is no way to force the Python object
 782 // (and all references to it) to die too.  This causes problems (crashes) in
 783 // wxPython when a python shadow object attempts to call a C++ method using
 784 // the now bogus pointer... So to try and prevent this we'll do a little black
 785 // magic and change the class of the python instance to a class that will
 786 // raise an exception for any attempt to call methods with it.  See
 787 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 788 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 789
 790     static PyObject* deadObjectClass = NULL;
 791
 792     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 793     if (deadObjectClass == NULL) {
 794         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 795         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 796         // will lead to a deadlock when it tries to aquire the GIL again.
 797         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 798         Py_INCREF(deadObjectClass);
 799     }
 800
 801
 802     // Only if there is more than one reference to the object and we are
 803     // holding the OOR reference:
 804     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
 805         // bool isInstance = wxPyInstance_Check(self->m_obj);
 806         // TODO same here
 807         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 808
 809         // Call __del__, if there is one.
 810         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 811         if (func) {
 812             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 813             Py_XDECREF(rv);
 814             Py_DECREF(func);
 815         }
 816         if (PyErr_Occurred())
 817             PyErr_Clear();      // just ignore it for now
 818
 819
 820         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 821         if (dict) {
 822             // Clear the instance's dictionary
 823             PyDict_Clear(dict);
 824
 825             // put the name of the old class into the instance, and then reset the
 826             // class to be the dead class.
 827             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 828             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 829             PyDict_SetItemString(dict, "_name", name);
 830             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 831             //Py_INCREF(deadObjectClass);
 832             Py_DECREF(klass);
 833             Py_DECREF(name);
 834         }
 835     }
 836
 837     // m_obj is DECREF'd in the base class dtor...
 838     wxPyEndBlockThreads(blocked);
 839 }
 840
 841
 842 //---------------------------------------------------------------------------
 843 // Stuff used by OOR to find the right wxPython class type to return and to
 844 // build it.
 845
 846
 847 // The pointer type map is used when the "pointer" type name generated by SWIG
 848 // is not the same as the shadow class name, for example wxPyTreeCtrl
 849 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 850 // so we'll just make it a Python dictionary in the wx module's namespace.
 851 // (See __wxSetDictionary)
 852 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 853     if (! wxPyPtrTypeMap)
 854         wxPyPtrTypeMap = PyDict_New();
 855     PyDict_SetItemString(wxPyPtrTypeMap,
 856                          (char*)commonName,
 857                          PyString_FromString((char*)ptrName));
 858 }
 859
 860
 861
 862
 863 PyObject*  wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
 864     PyObject* target = NULL;
 865     bool      isEvtHandler = false;
 866     bool      isSizer = false;
 867
 868     if (source) {
 869         // If it's derived from wxEvtHandler then there may
 870         // already be a pointer to a Python object that we can use
 871         // in the OOR data.
 872         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 873             isEvtHandler = true;
 874             wxEvtHandler* eh = (wxEvtHandler*)source;
 875             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 876             if (data) {
 877                 target = data->m_obj;
 878                 if (target)
 879                     Py_INCREF(target);
 880             }
 881         }
 882
 883         // Also check for wxSizer
 884         if (!target && wxIsKindOf(source, wxSizer)) {
 885             isSizer = true;
 886             wxSizer* sz = (wxSizer*)source;
 887             wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
 888             if (data) {
 889                 target = data->m_obj;
 890                 if (target)
 891                     Py_INCREF(target);
 892             }
 893         }
 894
 895         if (! target) {
 896             // Otherwise make it the old fashioned way by making a new shadow
 897             // object and putting this pointer in it.  Look up the class
 898             // heirarchy until we find a class name that is located in the
 899             // python module.
 900             const wxClassInfo* info   = source->GetClassInfo();
 901             wxString           name   = info->GetClassName();
 902             bool               exists = wxPyCheckSwigType(name);
 903             while (info && !exists) {
 904                 info = info->GetBaseClass1();
 905                 name = info->GetClassName();
 906                 exists = wxPyCheckSwigType(name);
 907             }
 908             if (info) {
 909                 target = wxPyConstructObject((void*)source, name, setThisOwn);
 910                 if (target && isEvtHandler)
 911                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
 912                 if (target && isSizer)
 913                     ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
 914             } else {
 915                 wxString msg(wxT("wxPython class not found for "));
 916                 msg += source->GetClassInfo()->GetClassName();
 917                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
 918                 target = NULL;
 919             }
 920         }
 921     } else {  // source was NULL so return None.
 922         Py_INCREF(Py_None); target = Py_None;
 923     }
 924     return target;
 925 }
 926
 927
 928 PyObject*  wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
 929
 930     return wxPyMake_wxObject(source, setThisOwn);
 931 }
 932
 933
 934 //---------------------------------------------------------------------------
 935
 936
 937 #ifdef WXP_WITH_THREAD
 938 #if !wxPyUSE_GIL_STATE
 939
 940 inline
 941 unsigned long wxPyGetCurrentThreadId() {
 942     return wxThread::GetCurrentId();
 943 }
 944
 945 static wxPyThreadState gs_shutdownTState;
 946
 947 static
 948 wxPyThreadState* wxPyGetThreadState() {
 949     if (wxPyTMutex == NULL) // Python is shutting down...
 950         return &gs_shutdownTState;
 951
 952     unsigned long ctid = wxPyGetCurrentThreadId();
 953     wxPyThreadState* tstate = NULL;
 954
 955     wxPyTMutex->Lock();
 956     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 957         wxPyThreadState& info = wxPyTStates->Item(i);
 958         if (info.tid == ctid) {
 959             tstate = &info;
 960             break;
 961         }
 962     }
 963     wxPyTMutex->Unlock();
 964     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
 965     return tstate;
 966 }
 967
 968
 969 static
 970 void wxPySaveThreadState(PyThreadState* tstate) {
 971     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
 972         gs_shutdownTState.tstate = tstate;
 973         return;
 974     }
 975     unsigned long ctid = wxPyGetCurrentThreadId();
 976     wxPyTMutex->Lock();
 977     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 978         wxPyThreadState& info = wxPyTStates->Item(i);
 979         if (info.tid == ctid) {
 980 #if 0
 981             if (info.tstate != tstate)
 982                 wxLogMessage("*** tstate mismatch!???");
 983 #endif
 984             info.tstate = tstate;    // allow for transient tstates
 985             // Normally it will never change, but apparently COM callbacks
 986             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
 987             // tstate which will then be garbage the next time we try to use
 988             // it...
 989
 990             wxPyTMutex->Unlock();
 991             return;
 992         }
 993     }
 994     // not found, so add it...
 995     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
 996     wxPyTMutex->Unlock();
 997 }
 998
 999 #endif
1000 #endif
1001
1002
1003
1004 // Calls from Python to wxWindows code are wrapped in calls to these
1005 // functions:
1006
1007 PyThreadState* wxPyBeginAllowThreads() {
1008 #ifdef WXP_WITH_THREAD
1009     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1010 #if !wxPyUSE_GIL_STATE
1011     wxPySaveThreadState(saved);
1012 #endif
1013     return saved;
1014 #else
1015     return NULL;
1016 #endif
1017 }
1018
1019 void wxPyEndAllowThreads(PyThreadState* saved) {
1020 #ifdef WXP_WITH_THREAD
1021     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1022 #endif
1023 }
1024
1025
1026
1027 // Calls from wxWindows back to Python code, or even any PyObject
1028 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1029
1030 wxPyBlock_t wxPyBeginBlockThreads() {
1031 #ifdef WXP_WITH_THREAD
1032     if (! Py_IsInitialized()) {
1033         return (wxPyBlock_t)0;
1034     }
1035 #if wxPyUSE_GIL_STATE
1036     PyGILState_STATE state = PyGILState_Ensure();
1037     return state;
1038 #else
1039     PyThreadState *current = _PyThreadState_Current;
1040
1041     // Only block if there wasn't already a tstate, or if the current one is
1042     // not the one we are wanting to change to.  This should prevent deadlock
1043     // if there are nested calls to wxPyBeginBlockThreads
1044     wxPyBlock_t blocked = false;
1045     wxPyThreadState* tstate = wxPyGetThreadState();
1046     if (current != tstate->tstate) {
1047         PyEval_RestoreThread(tstate->tstate);
1048         blocked = true;
1049     }
1050     return blocked;
1051 #endif
1052 #else
1053     return (wxPyBlock_t)0;
1054 #endif
1055 }
1056
1057
1058 void wxPyEndBlockThreads(wxPyBlock_t blocked) {
1059 #ifdef WXP_WITH_THREAD
1060     if (! Py_IsInitialized()) {
1061         return;
1062     }
1063 #if wxPyUSE_GIL_STATE
1064     PyGILState_Release(blocked);
1065 #else
1066     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1067     // The value of blocked passed in needs to be the same as that returned
1068     // from wxPyBeginBlockThreads at the same nesting level.
1069     if ( blocked ) {
1070         PyEval_SaveThread();
1071     }
1072 #endif
1073 #endif
1074 }
1075
1076
1077 //---------------------------------------------------------------------------
1078 // wxPyInputStream and wxPyCBInputStream methods
1079
1080
1081 void wxPyInputStream::close() {
1082     /* do nothing for now */
1083 }
1084
1085 void wxPyInputStream::flush() {
1086     /* do nothing for now */
1087 }
1088
1089 bool wxPyInputStream::eof() {
1090     if (m_wxis)
1091         return m_wxis->Eof();
1092     else
1093         return true;
1094 }
1095
1096 wxPyInputStream::~wxPyInputStream() {
1097     if (m_wxis)
1098         delete m_wxis;
1099 }
1100
1101
1102
1103
1104 PyObject* wxPyInputStream::read(int size) {
1105     PyObject* obj = NULL;
1106     wxMemoryBuffer buf;
1107     const int BUFSIZE = 1024;
1108
1109     // check if we have a real wxInputStream to work with
1110     if (!m_wxis) {
1111         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1112         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1113         wxPyEndBlockThreads(blocked);
1114         return NULL;
1115     }
1116
1117     if (size < 0) {
1118         // read while bytes are available on the stream
1119         while ( m_wxis->CanRead() ) {
1120             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1121             buf.UngetAppendBuf(m_wxis->LastRead());
1122         }
1123
1124     } else {  // Read only size number of characters
1125         m_wxis->Read(buf.GetWriteBuf(size), size);
1126         buf.UngetWriteBuf(m_wxis->LastRead());
1127     }
1128
1129     // error check
1130     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1131     wxStreamError err = m_wxis->GetLastError();
1132     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1133         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1134     }
1135     else {
1136         // We use only strings for the streams, not unicode
1137         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1138     }
1139     wxPyEndBlockThreads(blocked);
1140     return obj;
1141 }
1142
1143
1144 PyObject* wxPyInputStream::readline(int size) {
1145     PyObject* obj = NULL;
1146     wxMemoryBuffer buf;
1147     int i;
1148     char ch;
1149
1150     // check if we have a real wxInputStream to work with
1151     if (!m_wxis) {
1152         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1153         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1154         wxPyEndBlockThreads(blocked);
1155         return NULL;
1156     }
1157
1158     // read until \n or byte limit reached
1159     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1160         ch = m_wxis->GetC();
1161         buf.AppendByte(ch);
1162     }
1163
1164     // errorcheck
1165     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1166     wxStreamError err = m_wxis->GetLastError();
1167     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1168         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1169     }
1170     else {
1171         // We use only strings for the streams, not unicode
1172         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1173     }
1174     wxPyEndBlockThreads(blocked);
1175     return obj;
1176 }
1177
1178
1179 PyObject* wxPyInputStream::readlines(int sizehint) {
1180     PyObject* pylist;
1181
1182     // check if we have a real wxInputStream to work with
1183     if (!m_wxis) {
1184         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1185         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1186         wxPyEndBlockThreads(blocked);
1187         return NULL;
1188     }
1189
1190     // init list
1191     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1192     pylist = PyList_New(0);
1193     wxPyEndBlockThreads(blocked);
1194
1195     if (!pylist) {
1196         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1197         PyErr_NoMemory();
1198         wxPyEndBlockThreads(blocked);
1199         return NULL;
1200     }
1201
1202     // read sizehint bytes or until EOF
1203     int i;
1204     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1205         PyObject* s = this->readline();
1206         if (s == NULL) {
1207             wxPyBlock_t blocked = wxPyBeginBlockThreads();
1208             Py_DECREF(pylist);
1209             wxPyEndBlockThreads(blocked);
1210             return NULL;
1211         }
1212         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1213         PyList_Append(pylist, s);
1214         i += PyString_Size(s);
1215         wxPyEndBlockThreads(blocked);
1216     }
1217
1218     // error check
1219     wxStreamError err = m_wxis->GetLastError();
1220     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1221         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1222         Py_DECREF(pylist);
1223         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1224         wxPyEndBlockThreads(blocked);
1225         return NULL;
1226     }
1227
1228     return pylist;
1229 }
1230
1231
1232 void wxPyInputStream::seek(int offset, int whence) {
1233     if (m_wxis)
1234         m_wxis->SeekI(offset, wxSeekMode(whence));
1235 }
1236
1237 int wxPyInputStream::tell(){
1238     if (m_wxis)
1239         return m_wxis->TellI();
1240     else return 0;
1241 }
1242
1243
1244
1245
1246 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1247     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1248 {}
1249
1250 wxPyCBInputStream::wxPyCBInputStream(const wxPyCBInputStream& other)
1251 {
1252     m_read  = other.m_read;
1253     m_seek  = other.m_seek;
1254     m_tell  = other.m_tell;
1255     m_block = other.m_block;
1256     Py_INCREF(m_read);
1257     Py_INCREF(m_seek);
1258     Py_INCREF(m_tell);
1259 }
1260
1261
1262 wxPyCBInputStream::~wxPyCBInputStream() {
1263     wxPyBlock_t blocked = wxPyBlock_t_default;
1264     if (m_block) blocked = wxPyBeginBlockThreads();
1265     Py_XDECREF(m_read);
1266     Py_XDECREF(m_seek);
1267     Py_XDECREF(m_tell);
1268     if (m_block) wxPyEndBlockThreads(blocked);
1269 }
1270
1271
1272 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1273     wxPyBlock_t blocked = wxPyBlock_t_default;
1274     if (block) blocked = wxPyBeginBlockThreads();
1275
1276     PyObject* read = getMethod(py, "read");
1277     PyObject* seek = getMethod(py, "seek");
1278     PyObject* tell = getMethod(py, "tell");
1279
1280     if (!read) {
1281         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1282         Py_XDECREF(read);
1283         Py_XDECREF(seek);
1284         Py_XDECREF(tell);
1285         if (block) wxPyEndBlockThreads(blocked);
1286         return NULL;
1287     }
1288
1289     if (block) wxPyEndBlockThreads(blocked);
1290     return new wxPyCBInputStream(read, seek, tell, block);
1291 }
1292
1293
1294 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1295     return wxPyCBInputStream::create(py, block);
1296 }
1297
1298 wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other) {
1299     return new wxPyCBInputStream(*other);
1300 }
1301
1302 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1303     if (!PyObject_HasAttrString(py, name))
1304         return NULL;
1305     PyObject* o = PyObject_GetAttrString(py, name);
1306     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1307         Py_DECREF(o);
1308         return NULL;
1309     }
1310     return o;
1311 }
1312
1313
1314 wxFileOffset wxPyCBInputStream::GetLength() const {
1315     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1316     if (m_seek && m_tell) {
1317         wxFileOffset temp = self->OnSysTell();
1318         wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
1319         self->OnSysSeek(temp, wxFromStart);
1320         return ret;
1321     }
1322     else
1323         return wxInvalidOffset;
1324 }
1325
1326
1327 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1328     if (bufsize == 0)
1329         return 0;
1330
1331     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1332     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1333     PyObject* result = PyEval_CallObject(m_read, arglist);
1334     Py_DECREF(arglist);
1335
1336     size_t o = 0;
1337     if ((result != NULL) && PyString_Check(result)) {
1338         o = PyString_Size(result);
1339         if (o == 0)
1340             m_lasterror = wxSTREAM_EOF;
1341         if (o > bufsize)
1342             o = bufsize;
1343         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1344         Py_DECREF(result);
1345
1346     }
1347     else
1348         m_lasterror = wxSTREAM_READ_ERROR;
1349     wxPyEndBlockThreads(blocked);
1350     return o;
1351 }
1352
1353 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1354     m_lasterror = wxSTREAM_WRITE_ERROR;
1355     return 0;
1356 }
1357
1358
1359 wxFileOffset wxPyCBInputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
1360     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1361     PyObject* arglist = PyTuple_New(2);
1362
1363     if (sizeof(wxFileOffset) > sizeof(long))
1364         // wxFileOffset is a 64-bit value...
1365         PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
1366     else
1367         PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
1368
1369     PyTuple_SET_ITEM(arglist, 1, PyInt_FromLong(mode));
1370
1371
1372     PyObject* result = PyEval_CallObject(m_seek, arglist);
1373     Py_DECREF(arglist);
1374     Py_XDECREF(result);
1375     wxPyEndBlockThreads(blocked);
1376     return OnSysTell();
1377 }
1378
1379
1380 wxFileOffset wxPyCBInputStream::OnSysTell() const {
1381     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1382     PyObject* arglist = Py_BuildValue("()");
1383     PyObject* result = PyEval_CallObject(m_tell, arglist);
1384     Py_DECREF(arglist);
1385     wxFileOffset o = 0;
1386     if (result != NULL) {
1387         if (PyLong_Check(result))
1388             o = PyLong_AsLongLong(result);
1389         else
1390             o = PyInt_AsLong(result);
1391         Py_DECREF(result);
1392     };
1393     wxPyEndBlockThreads(blocked);
1394     return o;
1395 }
1396
1397 //----------------------------------------------------------------------
1398
1399 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1400
1401 wxPyCallback::wxPyCallback(PyObject* func) {
1402     m_func = func;
1403     Py_INCREF(m_func);
1404 }
1405
1406 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1407     m_func = other.m_func;
1408     Py_INCREF(m_func);
1409 }
1410
1411 wxPyCallback::~wxPyCallback() {
1412     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1413     Py_DECREF(m_func);
1414     wxPyEndBlockThreads(blocked);
1415 }
1416
1417
1418 #define wxPy_PRECALLINIT     "_preCallInit"
1419 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1420
1421 // This function is used for all events destined for Python event handlers.
1422 void wxPyCallback::EventThunker(wxEvent& event) {
1423     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1424     PyObject*       func = cb->m_func;
1425     PyObject*       result;
1426     PyObject*       arg;
1427     PyObject*       tuple;
1428     bool            checkSkip = false;
1429
1430     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1431     wxString className = event.GetClassInfo()->GetClassName();
1432
1433     // If the event is one of these types then pass the original
1434     // event object instead of the one passed to us.
1435     if ( className == wxT("wxPyEvent") ) {
1436         arg =       ((wxPyEvent*)&event)->GetSelf();
1437         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1438     }
1439     else if ( className == wxT("wxPyCommandEvent") ) {
1440         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1441         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1442     }
1443     else {
1444         arg = wxPyConstructObject((void*)&event, className);
1445     }
1446
1447     if (!arg) {
1448         PyErr_Print();
1449     } else {
1450         // "intern" the pre/post method names to speed up the HasAttr
1451         static PyObject* s_preName  = NULL;
1452         static PyObject* s_postName = NULL;
1453         if (s_preName == NULL) {
1454             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1455             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1456         }
1457
1458         // Check if the event object needs some preinitialization
1459         if (PyObject_HasAttr(arg, s_preName)) {
1460             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1461             if ( result ) {
1462                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1463                 PyErr_Clear();       // Just in case...
1464             } else {
1465                 PyErr_Print();
1466             }
1467         }
1468
1469         // Call the event handler, passing the event object
1470         tuple = PyTuple_New(1);
1471         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1472         result = PyEval_CallObject(func, tuple);
1473         if ( result ) {
1474             Py_DECREF(result);   // result is ignored, but we still need to decref it
1475             PyErr_Clear();       // Just in case...
1476         } else {
1477             PyErr_Print();
1478         }
1479
1480         // Check if the event object needs some post cleanup
1481         if (PyObject_HasAttr(arg, s_postName)) {
1482             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1483             if ( result ) {
1484                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1485                 PyErr_Clear();       // Just in case...
1486             } else {
1487                 PyErr_Print();
1488             }
1489         }
1490
1491         if ( checkSkip ) {
1492             // if the event object was one of our special types and
1493             // it had been cloned, then we need to extract the Skipped
1494             // value from the original and set it in the clone.
1495             result = PyObject_CallMethod(arg, "GetSkipped", "");
1496             if ( result ) {
1497                 event.Skip(PyInt_AsLong(result));
1498                 Py_DECREF(result);
1499             } else {
1500                 PyErr_Print();
1501             }
1502         }
1503         Py_DECREF(tuple);
1504     }
1505     wxPyEndBlockThreads(blocked);
1506 }
1507
1508
1509 //----------------------------------------------------------------------
1510
1511 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1512       m_lastFound = NULL;
1513       m_self = other.m_self;
1514       m_class = other.m_class;
1515       if (m_self) {
1516           Py_INCREF(m_self);
1517           Py_INCREF(m_class);
1518       }
1519 }
1520
1521
1522 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1523     m_self = self;
1524     m_class = klass;
1525     m_incRef = incref;
1526     if (incref) {
1527         Py_INCREF(m_self);
1528         Py_INCREF(m_class);
1529     }
1530 }
1531
1532
1533 #if PYTHON_API_VERSION >= 1011
1534
1535 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1536 // in which the method was defined.  Starting with 2.2 it returns
1537 // "class that asked for the method" which seems totally bogus to me
1538 // but apprently it fixes some obscure problem waiting to happen in
1539 // Python.  Since the API was not documented Guido and the gang felt
1540 // safe in changing it.  Needless to say that totally screwed up the
1541 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1542 // code to find the class where the method is actually defined...
1543
1544 static
1545 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1546 {
1547     int i, n;
1548
1549     if (PyType_Check(klass)) {      // new style classes
1550         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1551         PyTypeObject* type = (PyTypeObject*)klass;
1552         PyObject *mro, *res, *base, *dict;
1553         /* Look in tp_dict of types in MRO */
1554         mro = type->tp_mro;
1555         assert(PyTuple_Check(mro));
1556         n = PyTuple_GET_SIZE(mro);
1557         for (i = 0; i < n; i++) {
1558             base = PyTuple_GET_ITEM(mro, i);
1559             if (PyClass_Check(base))
1560                 dict = ((PyClassObject *)base)->cl_dict;
1561             else {
1562                 assert(PyType_Check(base));
1563                 dict = ((PyTypeObject *)base)->tp_dict;
1564             }
1565             assert(dict && PyDict_Check(dict));
1566             res = PyDict_GetItem(dict, name);
1567             if (res != NULL)
1568                 return base;
1569         }
1570         return NULL;
1571     }
1572
1573     else if (PyClass_Check(klass)) { // old style classes
1574         // This code is borrowed/adapted from class_lookup in classobject.c
1575         PyClassObject* cp = (PyClassObject*)klass;
1576         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1577         if (value != NULL) {
1578             return (PyObject*)cp;
1579         }
1580         n = PyTuple_Size(cp->cl_bases);
1581         for (i = 0; i < n; i++) {
1582             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1583             PyObject *v = PyFindClassWithAttr(base, name);
1584             if (v != NULL)
1585                 return v;
1586         }
1587         return NULL;
1588     }
1589     return NULL;
1590 }
1591 #endif
1592
1593
1594 static
1595 PyObject* PyMethod_GetDefiningClass(PyObject* method, PyObject* nameo)
1596 {
1597     PyObject* mgc = PyMethod_GET_CLASS(method);
1598
1599 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1600     return mgc;
1601 #else                             // 2.2 and after, the hard way...
1602     return PyFindClassWithAttr(mgc, nameo);
1603 #endif
1604 }
1605
1606
1607
1608 // To avoid recursion when an overridden virtual method wants to call the base
1609 // class version, temporarily set an attribute in the instance with the same
1610 // name as the method.  Then the PyObject_GetAttr in the next findCallback
1611 // will return this attribute and the PyMethod_Check will fail.
1612
1613 void wxPyCallbackHelper::setRecursionGuard(PyObject* method) const
1614 {
1615     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1616     PyObject_SetAttr(m_self, func->func_name, Py_None);
1617 }
1618
1619 void wxPyCallbackHelper::clearRecursionGuard(PyObject* method) const
1620 {
1621     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1622     if (PyObject_HasAttr(m_self, func->func_name)) {
1623         PyObject_DelAttr(m_self, func->func_name);
1624     }
1625 }
1626
1627 // bool wxPyCallbackHelper::hasRecursionGuard(PyObject* method) const
1628 // {
1629 //     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1630 //     if (PyObject_HasAttr(m_self, func->func_name)) {
1631 //         PyObject* attr = PyObject_GetAttr(m_self, func->func_name);
1632 //         bool retval = (attr == Py_None);
1633 //         Py_DECREF(attr);
1634 //         return retval;
1635 //     }
1636 //     return false;
1637 // }
1638
1639
1640 bool wxPyCallbackHelper::findCallback(const char* name, bool setGuard) const {
1641     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1642     PyObject *method, *klass;
1643     PyObject* nameo = PyString_FromString(name);
1644     self->m_lastFound = NULL;
1645
1646     // If the object (m_self) has an attibute of the given name...
1647     if (m_self && PyObject_HasAttr(m_self, nameo)) {
1648         method = PyObject_GetAttr(m_self, nameo);
1649
1650         // ...and if that attribute is a method, and if that method's class is
1651         // not from the registered class or a base class...
1652         if (PyMethod_Check(method) &&
1653             (klass = PyMethod_GetDefiningClass(method, nameo)) != NULL &&
1654             (klass != m_class) &&
1655             PyObject_IsSubclass(klass, m_class)) {
1656
1657             // ...then we'll save a pointer to the method so callCallback can
1658             // call it.  But first, set a recursion guard in case the
1659             // overridden method wants to call the base class version.
1660             if (setGuard)
1661                 setRecursionGuard(method);
1662             self->m_lastFound = method;
1663         }
1664         else {
1665             Py_DECREF(method);
1666         }
1667     }
1668
1669     Py_DECREF(nameo);
1670     return m_lastFound != NULL;
1671 }
1672
1673
1674 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1675     PyObject*   result;
1676     int         retval = false;
1677
1678     result = callCallbackObj(argTuple);
1679     if (result) {                       // Assumes an integer return type...
1680         retval = PyInt_AsLong(result);
1681         Py_DECREF(result);
1682         PyErr_Clear();                  // forget about it if it's not...
1683     }
1684     return retval;
1685 }
1686
1687 // Invoke the Python callable object, returning the raw PyObject return
1688 // value.  Caller should DECREF the return value and also manage the GIL.
1689 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1690     PyObject* result;
1691
1692     // Save a copy of the pointer in case the callback generates another
1693     // callback.  In that case m_lastFound will have a different value when
1694     // it gets back here...
1695     PyObject* method = m_lastFound;
1696
1697     result = PyEval_CallObject(method, argTuple);
1698     clearRecursionGuard(method);
1699
1700     Py_DECREF(argTuple);
1701     Py_DECREF(method);
1702     if (!result) {
1703         PyErr_Print();
1704     }
1705     return result;
1706 }
1707
1708
1709 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1710     cbh.setSelf(self, klass, incref);
1711 }
1712
1713 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name, bool setGuard) {
1714     return cbh.findCallback(name, setGuard);
1715 }
1716
1717 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1718     return cbh.callCallback(argTuple);
1719 }
1720
1721 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1722     return cbh.callCallbackObj(argTuple);
1723 }
1724
1725
1726 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1727     if (cbh->m_incRef && Py_IsInitialized()) {
1728         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1729         Py_XDECREF(cbh->m_self);
1730         Py_XDECREF(cbh->m_class);
1731         wxPyEndBlockThreads(blocked);
1732     }
1733 }
1734
1735 //---------------------------------------------------------------------------
1736 //---------------------------------------------------------------------------
1737 // These event classes can be derived from in Python and passed through the event
1738 // system without losing anything.  They do this by keeping a reference to
1739 // themselves and some special case handling in wxPyCallback::EventThunker.
1740
1741
1742 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1743     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1744     //Py_INCREF(m_self);        //      circular loops...
1745     m_cloned = false;
1746 }
1747
1748 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1749     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1750     if (m_cloned)
1751         Py_DECREF(m_self);
1752     wxPyEndBlockThreads(blocked);
1753 }
1754
1755 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1756     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1757     if (m_cloned)
1758         Py_DECREF(m_self);
1759     m_self = self;
1760     if (clone) {
1761         Py_INCREF(m_self);
1762         m_cloned = true;
1763     }
1764     wxPyEndBlockThreads(blocked);
1765 }
1766
1767 PyObject* wxPyEvtSelfRef::GetSelf() const {
1768     Py_INCREF(m_self);
1769     return m_self;
1770 }
1771
1772
1773 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1774 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1775
1776
1777 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1778     : wxEvent(winid, commandType) {
1779 }
1780
1781
1782 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1783     : wxEvent(evt)
1784 {
1785     SetSelf(evt.m_self, true);
1786 }
1787
1788
1789 wxPyEvent::~wxPyEvent() {
1790 }
1791
1792
1793 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1794     : wxCommandEvent(commandType, id) {
1795 }
1796
1797
1798 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1799     : wxCommandEvent(evt)
1800 {
1801     SetSelf(evt.m_self, true);
1802 }
1803
1804
1805 wxPyCommandEvent::~wxPyCommandEvent() {
1806 }
1807
1808
1809
1810
1811
1812 //---------------------------------------------------------------------------
1813 //---------------------------------------------------------------------------
1814 // Convert a wxList to a Python List, only works for lists of wxObjects
1815
1816 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1817     wxList*     list = (wxList*)listbase;  // this is probably bad...
1818     PyObject*   pyList;
1819     PyObject*   pyObj;
1820     wxObject*   wxObj;
1821     wxNode*     node = list->GetFirst();
1822
1823     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1824     pyList = PyList_New(0);
1825     while (node) {
1826         wxObj = node->GetData();
1827         pyObj = wxPyMake_wxObject(wxObj,false);
1828         PyList_Append(pyList, pyObj);
1829         Py_DECREF(pyObj);  // the Append also does an INCREF, that's one more than we need.
1830         node = node->GetNext();
1831     }
1832     wxPyEndBlockThreads(blocked);
1833     return pyList;
1834 }
1835
1836 //----------------------------------------------------------------------
1837
1838 long wxPyGetWinHandle(wxWindow* win) {
1839
1840 #ifdef __WXMSW__
1841     return (long)win->GetHandle();
1842 #endif
1843
1844 #if defined(__WXGTK__) || defined(__WXX11)
1845     return (long)GetXWindow(win);
1846 #endif
1847
1848 #ifdef __WXMAC__
1849     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
1850     return (long)win->GetHandle();
1851 #endif
1852
1853     return 0;
1854 }
1855
1856 //----------------------------------------------------------------------
1857 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1858 // included in every file over and over again...
1859
1860 wxString* wxString_in_helper(PyObject* source) {
1861     wxString* target = NULL;
1862
1863     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1864         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
1865         return NULL;
1866     }
1867 #if wxUSE_UNICODE
1868     PyObject* uni = source;
1869     if (PyString_Check(source)) {
1870         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1871         if (PyErr_Occurred()) return NULL;
1872     }
1873     target = new wxString();
1874     size_t len = PyUnicode_GET_SIZE(uni);
1875     if (len) {
1876         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target->GetWriteBuf(len), len);
1877         target->UngetWriteBuf(len);
1878     }
1879
1880     if (PyString_Check(source))
1881         Py_DECREF(uni);
1882 #else
1883     // Convert to a string object if it isn't already, then to wxString
1884     PyObject* str = source;
1885     if (PyUnicode_Check(source)) {
1886         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1887         if (PyErr_Occurred()) return NULL;
1888     }
1889     else if (!PyString_Check(source)) {
1890         str = PyObject_Str(source);
1891         if (PyErr_Occurred()) return NULL;
1892     }
1893     char* tmpPtr; Py_ssize_t tmpSize;
1894     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1895     target = new wxString(tmpPtr, tmpSize);
1896
1897     if (!PyString_Check(source))
1898         Py_DECREF(str);
1899 #endif // wxUSE_UNICODE
1900
1901     return target;
1902 }
1903
1904
1905 // Similar to above except doesn't use "new" and doesn't set an exception
1906 wxString Py2wxString(PyObject* source)
1907 {
1908     wxString target;
1909
1910 #if wxUSE_UNICODE
1911     // Convert to a unicode object, if not already, then to a wxString
1912     PyObject* uni = source;
1913     if (!PyUnicode_Check(source)) {
1914         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1915         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
1916     }
1917     size_t len = PyUnicode_GET_SIZE(uni);
1918     if (len) {
1919         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target.GetWriteBuf(len), len);
1920         target.UngetWriteBuf();
1921     }
1922
1923     if (!PyUnicode_Check(source))
1924         Py_DECREF(uni);
1925 #else
1926     // Convert to a string object if it isn't already, then to wxString
1927     PyObject* str = source;
1928     if (PyUnicode_Check(source)) {
1929         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1930         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1931     }
1932     else if (!PyString_Check(source)) {
1933         str = PyObject_Str(source);
1934         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1935     }
1936     char* tmpPtr; Py_ssize_t tmpSize;
1937     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1938     target = wxString(tmpPtr, tmpSize);
1939
1940     if (!PyString_Check(source))
1941         Py_DECREF(str);
1942 #endif // wxUSE_UNICODE
1943
1944     return target;
1945 }
1946
1947
1948 // Make either a Python String or Unicode object, depending on build mode
1949 PyObject* wx2PyString(const wxString& src)
1950 {
1951     PyObject* str;
1952 #if wxUSE_UNICODE
1953     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
1954 #else
1955     str = PyString_FromStringAndSize(src.c_str(), src.Len());
1956 #endif
1957     return str;
1958 }
1959
1960
1961
1962 void wxSetDefaultPyEncoding(const char* encoding)
1963 {
1964     strncpy(wxPyDefaultEncoding, encoding, DEFAULTENCODING_SIZE);
1965 }
1966
1967 const char* wxGetDefaultPyEncoding()
1968 {
1969     return wxPyDefaultEncoding;
1970 }
1971
1972 //----------------------------------------------------------------------
1973
1974
1975 byte* byte_LIST_helper(PyObject* source) {
1976     if (!PyList_Check(source)) {
1977         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1978         return NULL;
1979     }
1980     int count = PyList_Size(source);
1981     byte* temp = new byte[count];
1982     if (! temp) {
1983         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1984         return NULL;
1985     }
1986     for (int x=0; x<count; x++) {
1987         PyObject* o = PyList_GetItem(source, x);
1988         if (! PyInt_Check(o)) {
1989             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1990             return NULL;
1991         }
1992         temp[x] = (byte)PyInt_AsLong(o);
1993     }
1994     return temp;
1995 }
1996
1997
1998 int* int_LIST_helper(PyObject* source) {
1999     if (!PyList_Check(source)) {
2000         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2001         return NULL;
2002     }
2003     int count = PyList_Size(source);
2004     int* temp = new int[count];
2005     if (! temp) {
2006         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2007         return NULL;
2008     }
2009     for (int x=0; x<count; x++) {
2010         PyObject* o = PyList_GetItem(source, x);
2011         if (! PyInt_Check(o)) {
2012             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2013             return NULL;
2014         }
2015         temp[x] = PyInt_AsLong(o);
2016     }
2017     return temp;
2018 }
2019
2020
2021 long* long_LIST_helper(PyObject* source) {
2022     if (!PyList_Check(source)) {
2023         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2024         return NULL;
2025     }
2026     int count = PyList_Size(source);
2027     long* temp = new long[count];
2028     if (! temp) {
2029         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2030         return NULL;
2031     }
2032     for (int x=0; x<count; x++) {
2033         PyObject* o = PyList_GetItem(source, x);
2034         if (! PyInt_Check(o)) {
2035             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2036             return NULL;
2037         }
2038         temp[x] = PyInt_AsLong(o);
2039     }
2040     return temp;
2041 }
2042
2043
2044 char** string_LIST_helper(PyObject* source) {
2045     if (!PyList_Check(source)) {
2046         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2047         return NULL;
2048     }
2049     int count = PyList_Size(source);
2050     char** temp = new char*[count];
2051     if (! temp) {
2052         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2053         return NULL;
2054     }
2055     for (int x=0; x<count; x++) {
2056         PyObject* o = PyList_GetItem(source, x);
2057         if (! PyString_Check(o)) {
2058             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2059             return NULL;
2060         }
2061         temp[x] = PyString_AsString(o);
2062     }
2063     return temp;
2064 }
2065
2066 //---------------------------------------------------------------------------
2067 // NOTE: The following functions could really use some refactoring using
2068 // templates to make things somewhat simpler...
2069
2070 inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point)
2071 {
2072     // get the x value
2073     if (PyInt_Check(o1))
2074         point->x = (int)PyInt_AS_LONG(o1);
2075     else if (PyFloat_Check(o1))
2076         point->x = (int)PyFloat_AS_DOUBLE(o1);
2077     else if (PyNumber_Check(o1))
2078         point->x = (int)PyInt_AsLong(o1);
2079     else
2080         return false;
2081
2082     // get the y value
2083     if (PyInt_Check(o2))
2084         point->y = (int)PyInt_AS_LONG(o2);
2085     else if (PyFloat_Check(o2))
2086         point->y = (int)PyFloat_AS_DOUBLE(o2);
2087     else if (PyNumber_Check(o2))
2088         point->y = (int)PyInt_AsLong(o2);
2089     else
2090         return false;
2091
2092     return true;
2093
2094 // NOTE: This function used to have this code in it, but I don't know why it
2095 // is a problem nor what havok it will cause, so removing for now...
2096 //     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {
2097 //         // Disallow instances because they can cause havok
2098 //         return false;
2099 //     }
2100 }
2101
2102
2103 inline bool wxPoint2DFromObjects(PyObject* o1, PyObject* o2, wxPoint2D* point)
2104 {
2105     // get the x value
2106     if (PyInt_Check(o1))
2107         point->m_x = (double)PyInt_AS_LONG(o1);
2108     else if (PyFloat_Check(o1))
2109         point->m_x = (double)PyFloat_AS_DOUBLE(o1);
2110     else if (PyNumber_Check(o1))
2111         point->m_x = (double)PyFloat_AsDouble(o1);
2112     else
2113         return false;
2114
2115     // get the y value
2116     if (PyInt_Check(o2))
2117         point->m_y = (double)PyInt_AS_LONG(o2);
2118     else if (PyFloat_Check(o2))
2119         point->m_y = (double)PyFloat_AS_DOUBLE(o2);
2120     else if (PyNumber_Check(o2))
2121         point->m_y = (double)PyFloat_AsDouble(o2);
2122     else
2123         return false;
2124
2125     return true;
2126 }
2127
2128
2129
2130 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count)
2131 {
2132     int idx;
2133     wxPoint* temp;
2134     PyObject *o, *o1, *o2;
2135     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2136
2137     if (!PySequence_Check(source)) {
2138         goto error0;
2139     }
2140
2141     // The length of the sequence is returned in count.
2142     *count = PySequence_Length(source);
2143     if (*count < 0) {
2144         goto error0;
2145     }
2146
2147     temp = new wxPoint[*count];
2148     if (!temp) {
2149         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2150         return NULL;
2151     }
2152     for (idx=0; idx<*count; idx++) {
2153         // Get an item: try fast way first.
2154         if (isFast) {
2155             o = PySequence_Fast_GET_ITEM(source, idx);
2156         }
2157         else {
2158             o = PySequence_GetItem(source, idx);
2159             if (o == NULL) {
2160                 goto error1;
2161             }
2162         }
2163
2164         // Convert o to wxPoint.
2165         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2166             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2167             o1 = PySequence_Fast_GET_ITEM(o, 0);
2168             o2 = PySequence_Fast_GET_ITEM(o, 1);
2169             if (!wxPointFromObjects(o1, o2, &temp[idx])) {
2170                 goto error2;
2171             }
2172         }
2173         else if (wxPySwigInstance_Check(o)) {
2174             wxPoint* pt;
2175             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2176                 goto error2;
2177             }
2178             temp[idx] = *pt;
2179         }
2180         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2181             o1 = PySequence_GetItem(o, 0);
2182             o2 = PySequence_GetItem(o, 1);
2183             if (!wxPointFromObjects(o1, o2, &temp[idx])) {
2184                 goto error3;
2185             }
2186             Py_DECREF(o1);
2187             Py_DECREF(o2);
2188         }
2189         else {
2190             goto error2;
2191         }
2192         // Clean up.
2193         if (!isFast)
2194             Py_DECREF(o);
2195     }
2196     return temp;
2197
2198 error3:
2199     Py_DECREF(o1);
2200     Py_DECREF(o2);
2201 error2:
2202     if (!isFast)
2203         Py_DECREF(o);
2204 error1:
2205     delete [] temp;
2206 error0:
2207     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2208     return NULL;
2209 }
2210
2211
2212
2213 wxPoint2D* wxPoint2D_LIST_helper(PyObject* source, size_t *count)
2214 {
2215     size_t idx;
2216     wxPoint2D* temp;
2217     PyObject *o, *o1, *o2;
2218     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2219
2220     if (!PySequence_Check(source)) {
2221         goto error0;
2222     }
2223
2224     // The length of the sequence is returned in count.
2225     *count = PySequence_Length(source);
2226     if (*count < 0) {
2227         goto error0;
2228     }
2229
2230     temp = new wxPoint2D[*count];
2231     if (!temp) {
2232         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2233         return NULL;
2234     }
2235     for (idx=0; idx<*count; idx++) {
2236         // Get an item: try fast way first.
2237         if (isFast) {
2238             o = PySequence_Fast_GET_ITEM(source, idx);
2239         }
2240         else {
2241             o = PySequence_GetItem(source, idx);
2242             if (o == NULL) {
2243                 goto error1;
2244             }
2245         }
2246
2247         // Convert o to wxPoint.
2248         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2249             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2250             o1 = PySequence_Fast_GET_ITEM(o, 0);
2251             o2 = PySequence_Fast_GET_ITEM(o, 1);
2252             if (!wxPoint2DFromObjects(o1, o2, &temp[idx])) {
2253                 goto error2;
2254             }
2255         }
2256         else if (wxPySwigInstance_Check(o)) {
2257             wxPoint2D* pt;
2258             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint2D"))) {
2259                 goto error2;
2260             }
2261             temp[idx] = *pt;
2262         }
2263         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2264             o1 = PySequence_GetItem(o, 0);
2265             o2 = PySequence_GetItem(o, 1);
2266             if (!wxPoint2DFromObjects(o1, o2, &temp[idx])) {
2267                 goto error3;
2268             }
2269             Py_DECREF(o1);
2270             Py_DECREF(o2);
2271         }
2272         else {
2273             goto error2;
2274         }
2275         // Clean up.
2276         if (!isFast)
2277             Py_DECREF(o);
2278     }
2279     return temp;
2280
2281 error3:
2282     Py_DECREF(o1);
2283     Py_DECREF(o2);
2284 error2:
2285     if (!isFast)
2286         Py_DECREF(o);
2287 error1:
2288     delete [] temp;
2289 error0:
2290     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoint2Ds.");
2291     return NULL;
2292 }
2293
2294 //---------------------------------------------------------------------------
2295
2296
2297 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2298     if (!PyList_Check(source)) {
2299         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2300         return NULL;
2301     }
2302     int count = PyList_Size(source);
2303     wxBitmap** temp = new wxBitmap*[count];
2304     if (! temp) {
2305         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2306         return NULL;
2307     }
2308     for (int x=0; x<count; x++) {
2309         PyObject* o = PyList_GetItem(source, x);
2310         if (wxPySwigInstance_Check(o)) {
2311             wxBitmap*    pt;
2312             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2313                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2314                 return NULL;
2315             }
2316             temp[x] = pt;
2317         }
2318         else {
2319             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2320             return NULL;
2321         }
2322     }
2323     return temp;
2324 }
2325
2326
2327
2328 wxString* wxString_LIST_helper(PyObject* source) {
2329     if (!PyList_Check(source)) {
2330         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2331         return NULL;
2332     }
2333     int count = PyList_Size(source);
2334     wxString* temp = new wxString[count];
2335     if (! temp) {
2336         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2337         return NULL;
2338     }
2339     for (int x=0; x<count; x++) {
2340         PyObject* o = PyList_GetItem(source, x);
2341 #if PYTHON_API_VERSION >= 1009
2342         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2343             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2344             return NULL;
2345         }
2346 #else
2347         if (! PyString_Check(o)) {
2348             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2349             return NULL;
2350         }
2351 #endif
2352
2353         wxString* pStr = wxString_in_helper(o);
2354         temp[x] = *pStr;
2355         delete pStr;
2356     }
2357     return temp;
2358 }
2359
2360
2361 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2362     if (!PyList_Check(source)) {
2363         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2364         return NULL;
2365     }
2366     int count                = PyList_Size(source);
2367     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2368     if (! temp) {
2369         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2370         return NULL;
2371     }
2372     for (int x=0; x<count; x++) {
2373         PyObject* o = PyList_GetItem(source, x);
2374         if (wxPySwigInstance_Check(o)) {
2375             wxAcceleratorEntry* ae;
2376             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2377                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2378                 return NULL;
2379             }
2380             temp[x] = *ae;
2381         }
2382         else if (PyTuple_Check(o)) {
2383             PyObject* o1 = PyTuple_GetItem(o, 0);
2384             PyObject* o2 = PyTuple_GetItem(o, 1);
2385             PyObject* o3 = PyTuple_GetItem(o, 2);
2386             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2387         }
2388         else {
2389             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2390             return NULL;
2391         }
2392     }
2393     return temp;
2394 }
2395
2396
2397 wxPen** wxPen_LIST_helper(PyObject* source) {
2398     if (!PyList_Check(source)) {
2399         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2400         return NULL;
2401     }
2402     int count = PyList_Size(source);
2403     wxPen** temp = new wxPen*[count];
2404     if (!temp) {
2405         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2406         return NULL;
2407     }
2408     for (int x=0; x<count; x++) {
2409         PyObject* o = PyList_GetItem(source, x);
2410         if (wxPySwigInstance_Check(o)) {
2411             wxPen*  pt;
2412             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2413                 delete temp;
2414                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2415                 return NULL;
2416             }
2417             temp[x] = pt;
2418         }
2419         else {
2420             delete temp;
2421             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2422             return NULL;
2423         }
2424     }
2425     return temp;
2426 }
2427
2428
2429 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2430     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2431     PyObject *o1, *o2;
2432
2433     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2434         return false;
2435
2436     if (isFast) {
2437         o1 = PySequence_Fast_GET_ITEM(source, 0);
2438         o2 = PySequence_Fast_GET_ITEM(source, 1);
2439     }
2440     else {
2441         o1 = PySequence_GetItem(source, 0);
2442         o2 = PySequence_GetItem(source, 1);
2443     }
2444
2445     *i1 = PyInt_AsLong(o1);
2446     *i2 = PyInt_AsLong(o2);
2447
2448     if (! isFast) {
2449         Py_DECREF(o1);
2450         Py_DECREF(o2);
2451     }
2452     return true;
2453 }
2454
2455
2456 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2457     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2458     PyObject *o1, *o2, *o3, *o4;
2459
2460     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2461         return false;
2462
2463     if (isFast) {
2464         o1 = PySequence_Fast_GET_ITEM(source, 0);
2465         o2 = PySequence_Fast_GET_ITEM(source, 1);
2466         o3 = PySequence_Fast_GET_ITEM(source, 2);
2467         o4 = PySequence_Fast_GET_ITEM(source, 3);
2468     }
2469     else {
2470         o1 = PySequence_GetItem(source, 0);
2471         o2 = PySequence_GetItem(source, 1);
2472         o3 = PySequence_GetItem(source, 2);
2473         o4 = PySequence_GetItem(source, 3);
2474     }
2475
2476     *i1 = PyInt_AsLong(o1);
2477     *i2 = PyInt_AsLong(o2);
2478     *i3 = PyInt_AsLong(o3);
2479     *i4 = PyInt_AsLong(o4);
2480
2481     if (! isFast) {
2482         Py_DECREF(o1);
2483         Py_DECREF(o2);
2484         Py_DECREF(o3);
2485         Py_DECREF(o4);
2486     }
2487     return true;
2488 }
2489
2490
2491 //----------------------------------------------------------------------
2492
2493 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2494 {
2495     void* ptr;
2496
2497     if (wxPySwigInstance_Check(source) &&
2498         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2499         return true;
2500
2501     PyErr_Clear();
2502     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2503         return true;
2504
2505     return false;
2506 }
2507
2508 bool wxSize_helper(PyObject* source, wxSize** obj)
2509 {
2510     if (source == Py_None) {
2511         **obj = wxSize(-1,-1);
2512         return true;
2513     }
2514     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2515 }
2516
2517
2518 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2519 {
2520     if (source == Py_None) {
2521         **obj = wxPoint(-1,-1);
2522         return true;
2523     }
2524     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2525 }
2526
2527
2528
2529 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2530
2531     if (source == Py_None) {
2532         **obj = wxRealPoint(-1,-1);
2533         return true;
2534     }
2535
2536     // If source is an object instance then it may already be the right type
2537     if (wxPySwigInstance_Check(source)) {
2538         wxRealPoint* ptr;
2539         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2540             goto error;
2541         *obj = ptr;
2542         return true;
2543     }
2544     // otherwise a 2-tuple of floats is expected
2545     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2546         PyObject* o1 = PySequence_GetItem(source, 0);
2547         PyObject* o2 = PySequence_GetItem(source, 1);
2548         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2549             Py_DECREF(o1);
2550             Py_DECREF(o2);
2551             goto error;
2552         }
2553         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2554         Py_DECREF(o1);
2555         Py_DECREF(o2);
2556         return true;
2557     }
2558
2559  error:
2560     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2561     return false;
2562 }
2563
2564
2565
2566 bool wxRect_helper(PyObject* source, wxRect** obj) {
2567
2568     if (source == Py_None) {
2569         **obj = wxRect(-1,-1,-1,-1);
2570         return true;
2571     }
2572
2573     // If source is an object instance then it may already be the right type
2574     if (wxPySwigInstance_Check(source)) {
2575         wxRect* ptr;
2576         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2577             goto error;
2578         *obj = ptr;
2579         return true;
2580     }
2581     // otherwise a 4-tuple of integers is expected
2582     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2583         PyObject* o1 = PySequence_GetItem(source, 0);
2584         PyObject* o2 = PySequence_GetItem(source, 1);
2585         PyObject* o3 = PySequence_GetItem(source, 2);
2586         PyObject* o4 = PySequence_GetItem(source, 3);
2587         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2588             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2589             Py_DECREF(o1);
2590             Py_DECREF(o2);
2591             Py_DECREF(o3);
2592             Py_DECREF(o4);
2593             goto error;
2594         }
2595         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2596                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2597         Py_DECREF(o1);
2598         Py_DECREF(o2);
2599         Py_DECREF(o3);
2600         Py_DECREF(o4);
2601         return true;
2602     }
2603
2604  error:
2605     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2606     return false;
2607 }
2608
2609
2610
2611 bool wxColour_helper(PyObject* source, wxColour** obj) {
2612
2613     if (source == Py_None) {
2614         **obj = wxNullColour;
2615         return true;
2616     }
2617
2618     // If source is an object instance then it may already be the right type
2619     if (wxPySwigInstance_Check(source)) {
2620         wxColour* ptr;
2621         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2622             goto error;
2623         *obj = ptr;
2624         return true;
2625     }
2626     // otherwise check for a string
2627     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2628         wxString spec = Py2wxString(source);
2629         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2630             long red, green, blue;
2631             red = green = blue = 0;
2632             spec.Mid(1,2).ToLong(&red,   16);
2633             spec.Mid(3,2).ToLong(&green, 16);
2634             spec.Mid(5,2).ToLong(&blue,  16);
2635
2636             **obj = wxColour(red, green, blue);
2637             return true;
2638         }
2639         else {                                       // it's a colour name
2640             **obj = wxColour(spec);
2641             return true;
2642         }
2643     }
2644     // last chance: 3-tuple or 4-tuple of integers is expected
2645     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2646         PyObject* o1 = PySequence_GetItem(source, 0);
2647         PyObject* o2 = PySequence_GetItem(source, 1);
2648         PyObject* o3 = PySequence_GetItem(source, 2);
2649         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2650             Py_DECREF(o1);
2651             Py_DECREF(o2);
2652             Py_DECREF(o3);
2653             goto error;
2654         }
2655         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2656         Py_DECREF(o1);
2657         Py_DECREF(o2);
2658         Py_DECREF(o3);
2659         return true;
2660     }
2661     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2662         PyObject* o1 = PySequence_GetItem(source, 0);
2663         PyObject* o2 = PySequence_GetItem(source, 1);
2664         PyObject* o3 = PySequence_GetItem(source, 2);
2665         PyObject* o4 = PySequence_GetItem(source, 3);
2666         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2667             Py_DECREF(o1);
2668             Py_DECREF(o2);
2669             Py_DECREF(o3);
2670             Py_DECREF(o4);
2671             goto error;
2672         }
2673         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3), PyInt_AsLong(o4));
2674         Py_DECREF(o1);
2675         Py_DECREF(o2);
2676         Py_DECREF(o3);
2677         Py_DECREF(o4);
2678         return true;
2679     }
2680
2681  error:
2682     PyErr_SetString(PyExc_TypeError,
2683                     "Expected a wxColour object, a string containing a colour name or '#RRGGBB', or a 3- or 4-tuple of integers.");
2684     return false;
2685 }
2686
2687
2688 bool wxColour_typecheck(PyObject* source) {
2689
2690     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2691         return true;
2692
2693     if (PyString_Check(source) || PyUnicode_Check(source))
2694         return true;
2695
2696     return false;
2697 }
2698
2699
2700
2701 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2702
2703     if (source == Py_None) {
2704         **obj = wxPoint2D(-1,-1);
2705         return true;
2706     }
2707
2708     // If source is an object instance then it may already be the right type
2709     if (wxPySwigInstance_Check(source)) {
2710         wxPoint2D* ptr;
2711         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2712             goto error;
2713         *obj = ptr;
2714         return true;
2715     }
2716     // otherwise a length-2 sequence of floats is expected
2717     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2718         PyObject* o1 = PySequence_GetItem(source, 0);
2719         PyObject* o2 = PySequence_GetItem(source, 1);
2720         // This should really check for floats, not numbers -- but that would break code.
2721         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2722             Py_DECREF(o1);
2723             Py_DECREF(o2);
2724             goto error;
2725         }
2726         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2727         Py_DECREF(o1);
2728         Py_DECREF(o2);
2729         return true;
2730     }
2731  error:
2732     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wx.Point2D object.");
2733     return false;
2734 }
2735
2736
2737
2738 bool wxRect2D_helper(PyObject* source, wxRect2D** obj) {
2739
2740     if (source == Py_None) {
2741         **obj = wxRect2D(-1,-1,-1,-1);
2742         return true;
2743     }
2744
2745     // If source is an object instance then it may already be the right type
2746     if (wxPySwigInstance_Check(source)) {
2747         wxRect2D* ptr;
2748         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect2D")))
2749             goto error;
2750         *obj = ptr;
2751         return true;
2752     }
2753     // otherwise a length-4 sequence of floats is expected
2754     if (PySequence_Check(source) && PySequence_Length(source) == 4) {
2755         PyObject* o1 = PySequence_GetItem(source, 0);
2756         PyObject* o2 = PySequence_GetItem(source, 1);
2757         PyObject* o3 = PySequence_GetItem(source, 2);
2758         PyObject* o4 = PySequence_GetItem(source, 3);
2759         // This should really check for floats, not numbers -- but that would break code.
2760         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2761             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2762             Py_DECREF(o1);
2763             Py_DECREF(o2);
2764             Py_DECREF(o3);
2765             Py_DECREF(o4);
2766             goto error;
2767         }
2768         **obj = wxRect2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2),
2769                          PyFloat_AsDouble(o3), PyFloat_AsDouble(o4));
2770         Py_DECREF(o1);
2771         Py_DECREF(o2);
2772         Py_DECREF(o3);
2773         Py_DECREF(o4);
2774         return true;
2775     }
2776  error:
2777     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of floats or a wx.Rect2D object.");
2778     return false;
2779 }
2780
2781
2782 //----------------------------------------------------------------------
2783
2784 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr)
2785 {
2786     PyObject* list = PyList_New(0);
2787     for (size_t i=0; i < arr.GetCount(); i++) {
2788 #if wxUSE_UNICODE
2789         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2790 #else
2791         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2792 #endif
2793         PyList_Append(list, str);
2794         Py_DECREF(str);
2795     }
2796     return list;
2797 }
2798
2799
2800 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr)
2801 {
2802     PyObject* list = PyList_New(0);
2803     for (size_t i=0; i < arr.GetCount(); i++) {
2804         PyObject* number = PyInt_FromLong(arr[i]);
2805         PyList_Append(list, number);
2806         Py_DECREF(number);
2807     }
2808     return list;
2809 }
2810
2811
2812 PyObject* wxArrayDouble2PyList_helper(const wxArrayDouble& arr)
2813 {
2814     PyObject* list = PyList_New(0);
2815     for (size_t i=0; i < arr.GetCount(); i++) {
2816         PyObject* number = PyFloat_FromDouble(arr[i]);
2817         PyList_Append(list, number);
2818         Py_DECREF(number);
2819     }
2820     return list;
2821 }
2822
2823
2824 //----------------------------------------------------------------------
2825 // wxPyImageHandler methods
2826 //
2827 // TODO: Switch these to use wxPython's standard macros and helper classes
2828 //       for calling callbacks.
2829
2830 PyObject* wxPyImageHandler::m_DoCanRead_Name = NULL;
2831 PyObject* wxPyImageHandler::m_GetImageCount_Name = NULL;
2832 PyObject* wxPyImageHandler::m_LoadFile_Name = NULL;
2833 PyObject* wxPyImageHandler::m_SaveFile_Name = NULL;
2834
2835 PyObject* wxPyImageHandler::py_InputStream(wxInputStream* stream) {
2836     return wxPyConstructObject(new wxPyInputStream(stream),
2837                                wxT("wxPyInputStream"), 0);
2838 }
2839
2840 PyObject* wxPyImageHandler::py_Image(wxImage* image) {
2841     return wxPyConstructObject(image, wxT("wxImage"), 0);
2842 }
2843
2844 PyObject* wxPyImageHandler::py_OutputStream(wxOutputStream* stream) {
2845     return wxPyConstructObject(stream, wxT("wxOutputStream"), 0);
2846 }
2847
2848 wxPyImageHandler::wxPyImageHandler():
2849     m_self(NULL)
2850 {
2851     if (!m_DoCanRead_Name) {
2852         m_DoCanRead_Name = PyString_FromString("DoCanRead");
2853         m_GetImageCount_Name = PyString_FromString("GetImageCount");
2854         m_LoadFile_Name = PyString_FromString("LoadFile");
2855         m_SaveFile_Name = PyString_FromString("SaveFile");
2856     }
2857 }
2858
2859 wxPyImageHandler::~wxPyImageHandler() {
2860     if (m_self) {
2861         Py_DECREF(m_self);
2862         m_self = NULL;
2863     }
2864 }
2865
2866 void wxPyImageHandler::_SetSelf(PyObject *self) {
2867     // should check here for isinstance(PyImageHandler) ??
2868     m_self = self;
2869     Py_INCREF(m_self);
2870 }
2871
2872 bool wxPyImageHandler::DoCanRead(wxInputStream& stream) {
2873     // check if our object has this method
2874     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2875     if (!m_self || !PyObject_HasAttr(m_self, m_DoCanRead_Name)) {
2876         wxPyEndBlockThreads(blocked);
2877         return false;
2878     }
2879
2880     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_DoCanRead_Name,
2881                                                py_InputStream(&stream), NULL);
2882     bool retval = false;
2883     if (res) {
2884         retval = PyInt_AsLong(res);
2885         Py_DECREF(res);
2886         PyErr_Clear();
2887     }
2888     else
2889         PyErr_Print();
2890     wxPyEndBlockThreads(blocked);
2891     return retval;
2892 }
2893
2894 bool wxPyImageHandler::LoadFile( wxImage* image, wxInputStream& stream,
2895                                  bool verbose, int index ) {
2896     // check if our object has this method
2897     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2898     if (!m_self || !PyObject_HasAttr(m_self, m_LoadFile_Name)) {
2899         wxPyEndBlockThreads(blocked);
2900         return false;
2901     }
2902     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_LoadFile_Name,
2903                                                py_Image(image),
2904                                                py_InputStream(&stream),
2905                                                PyInt_FromLong(verbose),
2906                                                PyInt_FromLong(index),
2907                                                NULL);
2908     bool retval = false;
2909     if (res) {
2910         retval = PyInt_AsLong(res);
2911         Py_DECREF(res);
2912         PyErr_Clear();
2913     } else
2914         PyErr_Print();
2915     wxPyEndBlockThreads(blocked);
2916     return retval;
2917 }
2918
2919 bool wxPyImageHandler::SaveFile( wxImage* image, wxOutputStream& stream,
2920                                  bool verbose ) {
2921     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2922     if (!m_self || !PyObject_HasAttr(m_self, m_SaveFile_Name)) {
2923         wxPyEndBlockThreads(blocked);
2924         return false;
2925     }
2926     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_SaveFile_Name,
2927                                                py_Image(image),
2928                                                py_OutputStream(&stream),
2929                                                PyInt_FromLong(verbose),
2930                                                NULL);
2931     bool retval = false;
2932     if(res) {
2933         retval=PyInt_AsLong(res);
2934         Py_DECREF(res);
2935         PyErr_Clear();
2936     } else
2937         PyErr_Print();
2938     wxPyEndBlockThreads(blocked);
2939     return retval;
2940 }
2941
2942 int wxPyImageHandler::GetImageCount( wxInputStream& stream ) {
2943     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2944     if (!m_self || !PyObject_HasAttr(m_self, m_GetImageCount_Name)) {
2945         wxPyEndBlockThreads(blocked);
2946         return 1;
2947     }
2948     PyObject *res=PyObject_CallMethodObjArgs(m_self, m_GetImageCount_Name,
2949                                              py_InputStream(&stream),
2950                                              NULL);
2951     int retval = 1;
2952     if(res) {
2953         retval=PyInt_AsLong(res);
2954         Py_DECREF(res);
2955         PyErr_Clear();
2956     } else
2957         PyErr_Print();
2958     wxPyEndBlockThreads(blocked);
2959     return retval;
2960 }
2961
2962
2963 //----------------------------------------------------------------------
2964 // Function to test if the Display (or whatever is the platform equivallent)
2965 // can be connected to.  This is accessable from wxPython as a staticmethod of
2966 // wx.App called DisplayAvailable().
2967
2968
2969 bool wxPyTestDisplayAvailable()
2970 {
2971 #ifdef __WXGTK__
2972     Display* display;
2973     display = XOpenDisplay(NULL);
2974     if (display == NULL)
2975         return false;
2976     XCloseDisplay(display);
2977     return true;
2978 #endif
2979
2980 #ifdef __WXMAC__
2981     // This is adapted from Python's Mac/Modules/MacOS.c in the
2982     // MacOS_WMAvailable function.
2983     bool rv;
2984     ProcessSerialNumber psn;
2985
2986     /*
2987     ** This is a fairly innocuous call to make if we don't have a window
2988     ** manager, or if we have no permission to talk to it. It will print
2989     ** a message on stderr, but at least it won't abort the process.
2990     ** It appears the function caches the result itself, and it's cheap, so
2991     ** no need for us to cache.
2992     */
2993 #ifdef kCGNullDirectDisplay
2994     /* On 10.1 CGMainDisplayID() isn't available, and
2995     ** kCGNullDirectDisplay isn't defined.
2996     */
2997     if (CGMainDisplayID() == 0) {
2998         rv = false;
2999     } else
3000 #endif
3001     {
3002         // Also foreground the application on the first call as a side-effect.
3003         if (GetCurrentProcess(&psn) < 0 || SetFrontProcess(&psn) < 0) {
3004             rv = false;
3005         } else {
3006             rv = true;
3007         }
3008     }
3009     return rv;
3010 #endif
3011
3012 #ifdef __WXMSW__
3013     // TODO...
3014     return true;
3015 #endif
3016 }
3017
3018
3019 //----------------------------------------------------------------------
3020 //----------------------------------------------------------------------
3021
3022
3023
3024