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::MacOpenURL(const wxString &url)
 301 {
 302     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 303     if (wxPyCBH_findCallback(m_myInst, "MacOpenURL")) {
 304         PyObject* s = wx2PyString(url);
 305         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 306         Py_DECREF(s);
 307     }
 308     wxPyEndBlockThreads(blocked);
 309 }
 310
 311 void wxPyApp::MacPrintFile(const wxString &fileName)
 312 {
 313     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 314     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 315         PyObject* s = wx2PyString(fileName);
 316         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 317         Py_DECREF(s);
 318     }
 319     wxPyEndBlockThreads(blocked);
 320 }
 321
 322 void wxPyApp::MacNewFile()
 323 {
 324     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 325     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 326         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 327     wxPyEndBlockThreads(blocked);
 328 }
 329
 330 void wxPyApp::MacReopenApp()
 331 {
 332     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 333     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 334         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 335     wxPyEndBlockThreads(blocked);
 336 }
 337
 338
 339 /*static*/
 340 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 341     return 0;
 342 }
 343
 344 /*static*/
 345 long wxPyApp::GetMacAboutMenuItemId() {
 346 #ifdef __WXMAC__
 347     return s_macAboutMenuItemId;
 348 #else
 349     return 0;
 350 #endif
 351 }
 352
 353 /*static*/
 354 long wxPyApp::GetMacPreferencesMenuItemId() {
 355 #ifdef __WXMAC__
 356     return s_macPreferencesMenuItemId;
 357 #else
 358     return 0;
 359 #endif
 360 }
 361
 362 /*static*/
 363 long wxPyApp::GetMacExitMenuItemId() {
 364 #ifdef __WXMAC__
 365     return s_macExitMenuItemId;
 366 #else
 367     return 0;
 368 #endif
 369 }
 370
 371 /*static*/
 372 wxString wxPyApp::GetMacHelpMenuTitleName() {
 373 #ifdef __WXMAC__
 374     return s_macHelpMenuTitleName;
 375 #else
 376     return wxEmptyString;
 377 #endif
 378 }
 379
 380 /*static*/
 381 void wxPyApp::SetMacSupportPCMenuShortcuts(bool) {
 382 }
 383
 384 /*static*/
 385 void wxPyApp::SetMacAboutMenuItemId(long val) {
 386 #ifdef __WXMAC__
 387     s_macAboutMenuItemId = val;
 388 #endif
 389 }
 390
 391 /*static*/
 392 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 393 #ifdef __WXMAC__
 394     s_macPreferencesMenuItemId = val;
 395 #endif
 396 }
 397
 398 /*static*/
 399 void wxPyApp::SetMacExitMenuItemId(long val) {
 400 #ifdef __WXMAC__
 401     s_macExitMenuItemId = val;
 402 #endif
 403 }
 404
 405 /*static*/
 406 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 407 #ifdef __WXMAC__
 408     s_macHelpMenuTitleName = val;
 409 #endif
 410 }
 411
 412
 413 // This finishes the initialization of wxWindows and then calls the OnInit
 414 // that should be present in the derived (Python) class.
 415 void wxPyApp::_BootstrapApp()
 416 {
 417     static      bool haveInitialized = false;
 418     bool        result;
 419     wxPyBlock_t     blocked;
 420     PyObject*   retval = NULL;
 421     PyObject*   pyint  = NULL;
 422
 423
 424     // Only initialize wxWidgets once
 425     if (! haveInitialized) {
 426
 427         // Get any command-line args passed to this program from the sys module
 428         int    argc = 0;
 429         char** argv = NULL;
 430         blocked = wxPyBeginBlockThreads();
 431
 432         PyObject* sysargv = PySys_GetObject("argv");
 433         PyObject* executable = PySys_GetObject("executable");
 434
 435         if (sysargv != NULL && executable != NULL) {
 436             argc = PyList_Size(sysargv) + 1;
 437             argv = new char*[argc+1];
 438             argv[0] = strdup(PyString_AsString(executable));
 439             int x;
 440             for(x=1; x<argc; x++) {
 441                 PyObject *pyArg = PyList_GetItem(sysargv, x-1);
 442                 argv[x] = strdup(PyString_AsString(pyArg));
 443             }
 444             argv[argc] = NULL;
 445         }
 446         wxPyEndBlockThreads(blocked);
 447
 448         // Initialize wxWidgets
 449         result = wxEntryStart(argc, argv);
 450         // wxApp takes ownership of the argv array, don't delete it here
 451
 452         blocked = wxPyBeginBlockThreads();
 453         if (! result)  {
 454             PyErr_SetString(PyExc_SystemError,
 455                             "wxEntryStart failed, unable to initialize wxWidgets!"
 456 #ifdef __WXGTK__
 457                             "  (Is DISPLAY set properly?)"
 458 #endif
 459                 );
 460             goto error;
 461         }
 462
 463         // On wxGTK the locale will be changed to match the system settings,
 464         // but Python before 2.4 needs to have LC_NUMERIC set to "C" in order
 465         // for the floating point conversions and such to work right.
 466 #if defined(__WXGTK__) && PY_VERSION_HEX < 0x02040000
 467         setlocale(LC_NUMERIC, "C");
 468 #endif
 469
 470 //        wxSystemOptions::SetOption(wxT("mac.textcontrol-use-mlte"), 1);
 471
 472         wxPyEndBlockThreads(blocked);
 473         haveInitialized = true;
 474     }
 475     else {
 476         this->argc = 0;
 477         this->argv = NULL;
 478     }
 479
 480
 481     // It's now ok to generate exceptions for assertion errors.
 482     wxPythonApp->SetStartupComplete(true);
 483
 484
 485     // Call the Python wxApp's OnPreInit and OnInit functions
 486     blocked = wxPyBeginBlockThreads();
 487     if (wxPyCBH_findCallback(m_myInst, "OnPreInit")) {
 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             goto error;
 496     }
 497     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 498
 499         PyObject* method = m_myInst.GetLastFound();
 500         PyObject* argTuple = PyTuple_New(0);
 501         retval = PyEval_CallObject(method, argTuple);
 502         m_myInst.clearRecursionGuard(method);
 503         Py_DECREF(argTuple);
 504         Py_DECREF(method);
 505         if (retval == NULL)
 506             // Don't PyErr_Print here, let the exception in this case go back
 507             // up to the wx.PyApp.__init__ scope.
 508             goto error;
 509
 510         pyint = PyNumber_Int(retval);
 511         if (! pyint) {
 512             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 513             goto error;
 514         }
 515         result = PyInt_AS_LONG(pyint);
 516     }
 517     else {
 518         // Is it okay if there is no OnInit?  Probably so...
 519         result = true;
 520     }
 521
 522     if (! result) {
 523         PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
 524     }
 525
 526  error:
 527     Py_XDECREF(retval);
 528     Py_XDECREF(pyint);
 529
 530     wxPyEndBlockThreads(blocked);
 531 };
 532
 533 //---------------------------------------------------------------------
 534 //----------------------------------------------------------------------
 535
 536
 537 #if 0
 538 static char* wxPyCopyCString(const wxChar* src)
 539 {
 540     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 541     size_t len = strlen(buff);
 542     char*  dest = new char[len+1];
 543     strcpy(dest, buff);
 544     return dest;
 545 }
 546
 547 #if wxUSE_UNICODE
 548 static char* wxPyCopyCString(const char* src)   // we need a char version too
 549 {
 550     size_t len = strlen(src);
 551     char*  dest = new char[len+1];
 552     strcpy(dest, src);
 553     return dest;
 554 }
 555 #endif
 556
 557 static wxChar* wxPyCopyWString(const char *src)
 558 {
 559     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 560     wxString str(src, *wxConvCurrent);
 561     return copystring(str);
 562 }
 563
 564 #if wxUSE_UNICODE
 565 static wxChar* wxPyCopyWString(const wxChar *src)
 566 {
 567     return copystring(src);
 568 }
 569 #endif
 570 #endif
 571
 572
 573 inline const char* dropwx(const char* name) {
 574     if (name[0] == 'w' && name[1] == 'x')
 575         return name+2;
 576     else
 577         return name;
 578 }
 579
 580 //----------------------------------------------------------------------
 581
 582 // This function is called when the wx._core_ module is imported to do some
 583 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 584 // wxPyApp::_BootstrapApp
 585 void __wxPyPreStart(PyObject* moduleDict)
 586 {
 587
 588 #ifdef __WXMSW__
 589 //     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF
 590 //                     | _CRTDBG_CHECK_ALWAYS_DF
 591 //                     | _CRTDBG_DELAY_FREE_MEM_DF
 592 //         );
 593 #endif
 594
 595 #ifdef WXP_WITH_THREAD
 596 #if wxPyUSE_GIL_STATE
 597     PyEval_InitThreads();
 598 #else
 599     PyEval_InitThreads();
 600     wxPyTStates = new wxPyThreadStateArray;
 601     wxPyTMutex = new wxMutex;
 602
 603     // Save the current (main) thread state in our array
 604     PyThreadState* tstate = wxPyBeginAllowThreads();
 605     wxPyEndAllowThreads(tstate);
 606 #endif
 607 #endif
 608
 609     // Ensure that the build options in the DLL (or whatever) match this build
 610     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 611
 612     wxInitAllImageHandlers();
 613 }
 614
 615
 616
 617 void __wxPyCleanup() {
 618     wxPyDoingCleanup = true;
 619     if (wxPyDoCleanup) {
 620         wxPyDoCleanup = false;
 621         wxEntryCleanup();
 622     }
 623 #ifdef WXP_WITH_THREAD
 624 #if !wxPyUSE_GIL_STATE
 625     delete wxPyTMutex;
 626     wxPyTMutex = NULL;
 627     wxPyTStates->Empty();
 628     delete wxPyTStates;
 629     wxPyTStates = NULL;
 630 #endif
 631 #endif
 632 }
 633
 634
 635 // Save a reference to the dictionary of the wx._core module, and inject
 636 // a few more things into it.
 637 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 638 {
 639
 640     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 641         return NULL;
 642
 643     if (!PyDict_Check(wxPython_dict)) {
 644         PyErr_SetString(PyExc_TypeError,
 645                         "_wxPySetDictionary must have dictionary object!");
 646         return NULL;
 647     }
 648
 649     if (! wxPyPtrTypeMap)
 650         wxPyPtrTypeMap = PyDict_New();
 651     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 652
 653     // Create an exception object to use for wxASSERTions
 654     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 655                                             PyExc_AssertionError, NULL);
 656     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 657
 658     // Create an exception object to use when the app object hasn't been created yet
 659     wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
 660                                         PyExc_RuntimeError, NULL);
 661     PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
 662
 663
 664
 665 #ifdef __WXMOTIF__
 666 #define wxPlatform "__WXMOTIF__"
 667 #define wxPlatName "wxMotif"
 668 #endif
 669 #ifdef __WXX11__
 670 #define wxPlatform "__WXX11__"
 671 #define wxPlatName "wxX11"
 672 #endif
 673 #ifdef __WXGTK__
 674 #define wxPlatform "__WXGTK__"
 675 #define wxPlatName "wxGTK"
 676 #endif
 677 #ifdef __WXMSW__
 678 #define wxPlatform "__WXMSW__"
 679 #define wxPlatName "wxMSW"
 680 #endif
 681 #ifdef __WXMAC__
 682 #define wxPlatform "__WXMAC__"
 683 #define wxPlatName "wxMac"
 684 #endif
 685
 686 #ifdef __WXDEBUG__
 687     int wxdebug = 1;
 688 #else
 689     int wxdebug = 0;
 690 #endif
 691
 692     // These should be deprecated in favor of the PlatformInfo tuple built below...
 693     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 694     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 695     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 696
 697     // Make a tuple of strings that gives more info about the platform.
 698     PyObject* PlatInfo = PyList_New(0);
 699     PyObject* obj;
 700
 701 #define _AddInfoString(st) \
 702     obj = PyString_FromString(st); \
 703     PyList_Append(PlatInfo, obj); \
 704     Py_DECREF(obj)
 705
 706     _AddInfoString(wxPlatform);
 707     _AddInfoString(wxPlatName);
 708 #if wxUSE_UNICODE
 709     _AddInfoString("unicode");
 710 #else
 711     _AddInfoString("ansi");
 712 #endif
 713 #ifdef __WXGTK__
 714 #ifdef __WXGTK20__
 715     _AddInfoString("gtk2");
 716 #else
 717     _AddInfoString("gtk1");
 718 #endif
 719 #endif
 720 #ifdef __WXDEBUG__
 721     _AddInfoString("wx-assertions-on");
 722 #else
 723     _AddInfoString("wx-assertions-off");
 724 #endif
 725     _AddInfoString(wxPy_SWIG_VERSION);
 726 #ifdef __WXMAC__
 727     #if wxMAC_USE_CORE_GRAPHICS
 728         _AddInfoString("mac-cg");
 729     #else
 730         _AddInfoString("mac-qd");
 731     #endif
 732     #if wxMAC_USE_NATIVE_TOOLBAR
 733         _AddInfoString("mac-native-tb");
 734     #else
 735         _AddInfoString("mac-no-native-tb");
 736     #endif
 737 #endif
 738
 739 #undef _AddInfoString
 740
 741     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 742     Py_DECREF(PlatInfo);
 743     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 744
 745     RETURN_NONE();
 746 }
 747
 748
 749
 750 //---------------------------------------------------------------------------
 751
 752 // Check for existence of a wxApp, setting an exception if there isn't one.
 753 // This doesn't need to aquire the GIL because it should only be called from
 754 // an %exception before the lock is released.
 755
 756 bool wxPyCheckForApp() {
 757     if (wxTheApp != NULL)
 758         return true;
 759     else {
 760         PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
 761         return false;
 762     }
 763 }
 764
 765 //---------------------------------------------------------------------------
 766
 767 void wxPyUserData_dtor(wxPyUserData* self) {
 768     if (! wxPyDoingCleanup) {
 769         wxPyBlock_t blocked = wxPyBeginBlockThreads();
 770         Py_DECREF(self->m_obj);
 771         self->m_obj = NULL;
 772         wxPyEndBlockThreads(blocked);
 773     }
 774 }
 775
 776
 777 void wxPyClientData_dtor(wxPyClientData* self) {
 778     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 779                                         // may have already garbage collected the object...
 780         if (self->m_incRef) {
 781             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 782             Py_DECREF(self->m_obj);
 783             wxPyEndBlockThreads(blocked);
 784         }
 785         self->m_obj = NULL;
 786     }
 787 }
 788
 789
 790
 791 // This is called when an OOR controled object is being destroyed.  Although
 792 // the C++ object is going away there is no way to force the Python object
 793 // (and all references to it) to die too.  This causes problems (crashes) in
 794 // wxPython when a python shadow object attempts to call a C++ method using
 795 // the now bogus pointer... So to try and prevent this we'll do a little black
 796 // magic and change the class of the python instance to a class that will
 797 // raise an exception for any attempt to call methods with it.  See
 798 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 799 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 800
 801     static PyObject* deadObjectClass = NULL;
 802
 803     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 804     if (deadObjectClass == NULL) {
 805         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 806         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 807         // will lead to a deadlock when it tries to aquire the GIL again.
 808         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 809         Py_INCREF(deadObjectClass);
 810     }
 811
 812
 813     // Only if there is more than one reference to the object and we are
 814     // holding the OOR reference:
 815     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
 816         // bool isInstance = wxPyInstance_Check(self->m_obj);
 817         // TODO same here
 818         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 819
 820         // Call __del__, if there is one.
 821         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 822         if (func) {
 823             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 824             Py_XDECREF(rv);
 825             Py_DECREF(func);
 826         }
 827         if (PyErr_Occurred())
 828             PyErr_Clear();      // just ignore it for now
 829
 830
 831         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 832         if (dict) {
 833             // Clear the instance's dictionary
 834             PyDict_Clear(dict);
 835
 836             // put the name of the old class into the instance, and then reset the
 837             // class to be the dead class.
 838             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 839             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 840             PyDict_SetItemString(dict, "_name", name);
 841             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 842             //Py_INCREF(deadObjectClass);
 843             Py_DECREF(klass);
 844             Py_DECREF(name);
 845         }
 846     }
 847
 848     // m_obj is DECREF'd in the base class dtor...
 849     wxPyEndBlockThreads(blocked);
 850 }
 851
 852
 853 //---------------------------------------------------------------------------
 854 // Stuff used by OOR to find the right wxPython class type to return and to
 855 // build it.
 856
 857
 858 // The pointer type map is used when the "pointer" type name generated by SWIG
 859 // is not the same as the shadow class name, for example wxPyTreeCtrl
 860 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 861 // so we'll just make it a Python dictionary in the wx module's namespace.
 862 // (See __wxSetDictionary)
 863 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 864     if (! wxPyPtrTypeMap)
 865         wxPyPtrTypeMap = PyDict_New();
 866     PyDict_SetItemString(wxPyPtrTypeMap,
 867                          (char*)commonName,
 868                          PyString_FromString((char*)ptrName));
 869 }
 870
 871
 872
 873
 874 PyObject*  wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
 875     PyObject* target = NULL;
 876     bool      isEvtHandler = false;
 877     bool      isSizer = false;
 878
 879     if (source) {
 880         // If it's derived from wxEvtHandler then there may
 881         // already be a pointer to a Python object that we can use
 882         // in the OOR data.
 883         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 884             isEvtHandler = true;
 885             wxEvtHandler* eh = (wxEvtHandler*)source;
 886             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 887             if (data) {
 888                 target = data->m_obj;
 889                 if (target)
 890                     Py_INCREF(target);
 891             }
 892         }
 893
 894         // Also check for wxSizer
 895         if (!target && wxIsKindOf(source, wxSizer)) {
 896             isSizer = true;
 897             wxSizer* sz = (wxSizer*)source;
 898             wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
 899             if (data) {
 900                 target = data->m_obj;
 901                 if (target)
 902                     Py_INCREF(target);
 903             }
 904         }
 905
 906         if (! target) {
 907             // Otherwise make it the old fashioned way by making a new shadow
 908             // object and putting this pointer in it.  Look up the class
 909             // heirarchy until we find a class name that is located in the
 910             // python module.
 911             const wxClassInfo* info   = source->GetClassInfo();
 912             wxString           name   = info->GetClassName();
 913             bool               exists = wxPyCheckSwigType(name);
 914             while (info && !exists) {
 915                 info = info->GetBaseClass1();
 916                 name = info->GetClassName();
 917                 exists = wxPyCheckSwigType(name);
 918             }
 919             if (info) {
 920                 target = wxPyConstructObject((void*)source, name, setThisOwn);
 921                 if (target && isEvtHandler)
 922                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
 923                 if (target && isSizer)
 924                     ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
 925             } else {
 926                 wxString msg(wxT("wxPython class not found for "));
 927                 msg += source->GetClassInfo()->GetClassName();
 928                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
 929                 target = NULL;
 930             }
 931         }
 932     } else {  // source was NULL so return None.
 933         Py_INCREF(Py_None); target = Py_None;
 934     }
 935     return target;
 936 }
 937
 938
 939 PyObject*  wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
 940
 941     return wxPyMake_wxObject(source, setThisOwn);
 942 }
 943
 944
 945 //---------------------------------------------------------------------------
 946
 947
 948 #ifdef WXP_WITH_THREAD
 949 #if !wxPyUSE_GIL_STATE
 950
 951 inline
 952 unsigned long wxPyGetCurrentThreadId() {
 953     return wxThread::GetCurrentId();
 954 }
 955
 956 static wxPyThreadState gs_shutdownTState;
 957
 958 static
 959 wxPyThreadState* wxPyGetThreadState() {
 960     if (wxPyTMutex == NULL) // Python is shutting down...
 961         return &gs_shutdownTState;
 962
 963     unsigned long ctid = wxPyGetCurrentThreadId();
 964     wxPyThreadState* tstate = NULL;
 965
 966     wxPyTMutex->Lock();
 967     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 968         wxPyThreadState& info = wxPyTStates->Item(i);
 969         if (info.tid == ctid) {
 970             tstate = &info;
 971             break;
 972         }
 973     }
 974     wxPyTMutex->Unlock();
 975     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
 976     return tstate;
 977 }
 978
 979
 980 static
 981 void wxPySaveThreadState(PyThreadState* tstate) {
 982     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
 983         gs_shutdownTState.tstate = tstate;
 984         return;
 985     }
 986     unsigned long ctid = wxPyGetCurrentThreadId();
 987     wxPyTMutex->Lock();
 988     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 989         wxPyThreadState& info = wxPyTStates->Item(i);
 990         if (info.tid == ctid) {
 991 #if 0
 992             if (info.tstate != tstate)
 993                 wxLogMessage("*** tstate mismatch!???");
 994 #endif
 995             info.tstate = tstate;    // allow for transient tstates
 996             // Normally it will never change, but apparently COM callbacks
 997             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
 998             // tstate which will then be garbage the next time we try to use
 999             // it...
1000
1001             wxPyTMutex->Unlock();
1002             return;
1003         }
1004     }
1005     // not found, so add it...
1006     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
1007     wxPyTMutex->Unlock();
1008 }
1009
1010 #endif
1011 #endif
1012
1013
1014
1015 // Calls from Python to wxWindows code are wrapped in calls to these
1016 // functions:
1017
1018 PyThreadState* wxPyBeginAllowThreads() {
1019 #ifdef WXP_WITH_THREAD
1020     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1021 #if !wxPyUSE_GIL_STATE
1022     wxPySaveThreadState(saved);
1023 #endif
1024     return saved;
1025 #else
1026     return NULL;
1027 #endif
1028 }
1029
1030 void wxPyEndAllowThreads(PyThreadState* saved) {
1031 #ifdef WXP_WITH_THREAD
1032     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1033 #endif
1034 }
1035
1036
1037
1038 // Calls from wxWindows back to Python code, or even any PyObject
1039 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1040
1041 wxPyBlock_t wxPyBeginBlockThreads() {
1042 #ifdef WXP_WITH_THREAD
1043     if (! Py_IsInitialized()) {
1044         return (wxPyBlock_t)0;
1045     }
1046 #if wxPyUSE_GIL_STATE
1047     PyGILState_STATE state = PyGILState_Ensure();
1048     return state;
1049 #else
1050     PyThreadState *current = _PyThreadState_Current;
1051
1052     // Only block if there wasn't already a tstate, or if the current one is
1053     // not the one we are wanting to change to.  This should prevent deadlock
1054     // if there are nested calls to wxPyBeginBlockThreads
1055     wxPyBlock_t blocked = false;
1056     wxPyThreadState* tstate = wxPyGetThreadState();
1057     if (current != tstate->tstate) {
1058         PyEval_RestoreThread(tstate->tstate);
1059         blocked = true;
1060     }
1061     return blocked;
1062 #endif
1063 #else
1064     return (wxPyBlock_t)0;
1065 #endif
1066 }
1067
1068
1069 void wxPyEndBlockThreads(wxPyBlock_t blocked) {
1070 #ifdef WXP_WITH_THREAD
1071     if (! Py_IsInitialized()) {
1072         return;
1073     }
1074 #if wxPyUSE_GIL_STATE
1075     PyGILState_Release(blocked);
1076 #else
1077     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1078     // The value of blocked passed in needs to be the same as that returned
1079     // from wxPyBeginBlockThreads at the same nesting level.
1080     if ( blocked ) {
1081         PyEval_SaveThread();
1082     }
1083 #endif
1084 #endif
1085 }
1086
1087
1088 //---------------------------------------------------------------------------
1089 // wxPyInputStream and wxPyCBInputStream methods
1090
1091
1092 void wxPyInputStream::close() {
1093     /* do nothing for now */
1094 }
1095
1096 void wxPyInputStream::flush() {
1097     /* do nothing for now */
1098 }
1099
1100 bool wxPyInputStream::eof() {
1101     if (m_wxis)
1102         return m_wxis->Eof();
1103     else
1104         return true;
1105 }
1106
1107 wxPyInputStream::~wxPyInputStream() {
1108     if (m_wxis)
1109         delete m_wxis;
1110 }
1111
1112
1113
1114
1115 PyObject* wxPyInputStream::read(int size) {
1116     PyObject* obj = NULL;
1117     wxMemoryBuffer buf;
1118     const int BUFSIZE = 1024;
1119
1120     // check if we have a real wxInputStream to work with
1121     if (!m_wxis) {
1122         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1123         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1124         wxPyEndBlockThreads(blocked);
1125         return NULL;
1126     }
1127
1128     if (size < 0) {
1129         // read while bytes are available on the stream
1130         while ( m_wxis->CanRead() ) {
1131             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1132             buf.UngetAppendBuf(m_wxis->LastRead());
1133         }
1134
1135     } else {  // Read only size number of characters
1136         m_wxis->Read(buf.GetWriteBuf(size), size);
1137         buf.UngetWriteBuf(m_wxis->LastRead());
1138     }
1139
1140     // error check
1141     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1142     wxStreamError err = m_wxis->GetLastError();
1143     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1144         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1145     }
1146     else {
1147         // We use only strings for the streams, not unicode
1148         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1149     }
1150     wxPyEndBlockThreads(blocked);
1151     return obj;
1152 }
1153
1154
1155 PyObject* wxPyInputStream::readline(int size) {
1156     PyObject* obj = NULL;
1157     wxMemoryBuffer buf;
1158     int i;
1159     char ch;
1160
1161     // check if we have a real wxInputStream to work with
1162     if (!m_wxis) {
1163         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1164         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1165         wxPyEndBlockThreads(blocked);
1166         return NULL;
1167     }
1168
1169     // read until \n or byte limit reached
1170     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1171         ch = m_wxis->GetC();
1172         buf.AppendByte(ch);
1173     }
1174
1175     // errorcheck
1176     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1177     wxStreamError err = m_wxis->GetLastError();
1178     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1179         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1180     }
1181     else {
1182         // We use only strings for the streams, not unicode
1183         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1184     }
1185     wxPyEndBlockThreads(blocked);
1186     return obj;
1187 }
1188
1189
1190 PyObject* wxPyInputStream::readlines(int sizehint) {
1191     PyObject* pylist;
1192
1193     // check if we have a real wxInputStream to work with
1194     if (!m_wxis) {
1195         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1196         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1197         wxPyEndBlockThreads(blocked);
1198         return NULL;
1199     }
1200
1201     // init list
1202     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1203     pylist = PyList_New(0);
1204     wxPyEndBlockThreads(blocked);
1205
1206     if (!pylist) {
1207         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1208         PyErr_NoMemory();
1209         wxPyEndBlockThreads(blocked);
1210         return NULL;
1211     }
1212
1213     // read sizehint bytes or until EOF
1214     int i;
1215     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1216         PyObject* s = this->readline();
1217         if (s == NULL) {
1218             wxPyBlock_t blocked = wxPyBeginBlockThreads();
1219             Py_DECREF(pylist);
1220             wxPyEndBlockThreads(blocked);
1221             return NULL;
1222         }
1223         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1224         PyList_Append(pylist, s);
1225         i += PyString_Size(s);
1226         wxPyEndBlockThreads(blocked);
1227     }
1228
1229     // error check
1230     wxStreamError err = m_wxis->GetLastError();
1231     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1232         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1233         Py_DECREF(pylist);
1234         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1235         wxPyEndBlockThreads(blocked);
1236         return NULL;
1237     }
1238
1239     return pylist;
1240 }
1241
1242
1243 void wxPyInputStream::seek(int offset, int whence) {
1244     if (m_wxis)
1245         m_wxis->SeekI(offset, wxSeekMode(whence));
1246 }
1247
1248 int wxPyInputStream::tell(){
1249     if (m_wxis)
1250         return m_wxis->TellI();
1251     else return 0;
1252 }
1253
1254
1255
1256
1257 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1258     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1259 {}
1260
1261 wxPyCBInputStream::wxPyCBInputStream(const wxPyCBInputStream& other)
1262 {
1263     m_read  = other.m_read;
1264     m_seek  = other.m_seek;
1265     m_tell  = other.m_tell;
1266     m_block = other.m_block;
1267     Py_INCREF(m_read);
1268     Py_INCREF(m_seek);
1269     Py_INCREF(m_tell);
1270 }
1271
1272
1273 wxPyCBInputStream::~wxPyCBInputStream() {
1274     wxPyBlock_t blocked = wxPyBlock_t_default;
1275     if (m_block) blocked = wxPyBeginBlockThreads();
1276     Py_XDECREF(m_read);
1277     Py_XDECREF(m_seek);
1278     Py_XDECREF(m_tell);
1279     if (m_block) wxPyEndBlockThreads(blocked);
1280 }
1281
1282
1283 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1284     wxPyBlock_t blocked = wxPyBlock_t_default;
1285     if (block) blocked = wxPyBeginBlockThreads();
1286
1287     PyObject* read = getMethod(py, "read");
1288     PyObject* seek = getMethod(py, "seek");
1289     PyObject* tell = getMethod(py, "tell");
1290
1291     if (!read) {
1292         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1293         Py_XDECREF(read);
1294         Py_XDECREF(seek);
1295         Py_XDECREF(tell);
1296         if (block) wxPyEndBlockThreads(blocked);
1297         return NULL;
1298     }
1299
1300     if (block) wxPyEndBlockThreads(blocked);
1301     return new wxPyCBInputStream(read, seek, tell, block);
1302 }
1303
1304
1305 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1306     return wxPyCBInputStream::create(py, block);
1307 }
1308
1309 wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other) {
1310     return new wxPyCBInputStream(*other);
1311 }
1312
1313 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1314     if (!PyObject_HasAttrString(py, name))
1315         return NULL;
1316     PyObject* o = PyObject_GetAttrString(py, name);
1317     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1318         Py_DECREF(o);
1319         return NULL;
1320     }
1321     return o;
1322 }
1323
1324
1325 wxFileOffset wxPyCBInputStream::GetLength() const {
1326     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1327     if (m_seek && m_tell) {
1328         wxFileOffset temp = self->OnSysTell();
1329         wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
1330         self->OnSysSeek(temp, wxFromStart);
1331         return ret;
1332     }
1333     else
1334         return wxInvalidOffset;
1335 }
1336
1337
1338 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1339     if (bufsize == 0)
1340         return 0;
1341
1342     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1343     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1344     PyObject* result = PyEval_CallObject(m_read, arglist);
1345     Py_DECREF(arglist);
1346
1347     size_t o = 0;
1348     if ((result != NULL) && PyString_Check(result)) {
1349         o = PyString_Size(result);
1350         if (o == 0)
1351             m_lasterror = wxSTREAM_EOF;
1352         if (o > bufsize)
1353             o = bufsize;
1354         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1355         Py_DECREF(result);
1356
1357     }
1358     else
1359         m_lasterror = wxSTREAM_READ_ERROR;
1360     wxPyEndBlockThreads(blocked);
1361     return o;
1362 }
1363
1364 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1365     m_lasterror = wxSTREAM_WRITE_ERROR;
1366     return 0;
1367 }
1368
1369
1370 wxFileOffset wxPyCBInputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
1371     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1372     PyObject* arglist = PyTuple_New(2);
1373
1374     if (sizeof(wxFileOffset) > sizeof(long))
1375         // wxFileOffset is a 64-bit value...
1376         PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
1377     else
1378         PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
1379
1380     PyTuple_SET_ITEM(arglist, 1, PyInt_FromLong(mode));
1381
1382
1383     PyObject* result = PyEval_CallObject(m_seek, arglist);
1384     Py_DECREF(arglist);
1385     Py_XDECREF(result);
1386     wxPyEndBlockThreads(blocked);
1387     return OnSysTell();
1388 }
1389
1390
1391 wxFileOffset wxPyCBInputStream::OnSysTell() const {
1392     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1393     PyObject* arglist = Py_BuildValue("()");
1394     PyObject* result = PyEval_CallObject(m_tell, arglist);
1395     Py_DECREF(arglist);
1396     wxFileOffset o = 0;
1397     if (result != NULL) {
1398         if (PyLong_Check(result))
1399             o = PyLong_AsLongLong(result);
1400         else
1401             o = PyInt_AsLong(result);
1402         Py_DECREF(result);
1403     };
1404     wxPyEndBlockThreads(blocked);
1405     return o;
1406 }
1407
1408 //----------------------------------------------------------------------
1409
1410 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1411
1412 wxPyCallback::wxPyCallback(PyObject* func) {
1413     m_func = func;
1414     Py_INCREF(m_func);
1415 }
1416
1417 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1418     m_func = other.m_func;
1419     Py_INCREF(m_func);
1420 }
1421
1422 wxPyCallback::~wxPyCallback() {
1423     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1424     Py_DECREF(m_func);
1425     wxPyEndBlockThreads(blocked);
1426 }
1427
1428
1429 #define wxPy_PRECALLINIT     "_preCallInit"
1430 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1431
1432 // This function is used for all events destined for Python event handlers.
1433 void wxPyCallback::EventThunker(wxEvent& event) {
1434     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1435     PyObject*       func = cb->m_func;
1436     PyObject*       result;
1437     PyObject*       arg;
1438     PyObject*       tuple;
1439     bool            checkSkip = false;
1440
1441     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1442     wxString className = event.GetClassInfo()->GetClassName();
1443
1444     // If the event is one of these types then pass the original
1445     // event object instead of the one passed to us.
1446     if ( className == wxT("wxPyEvent") ) {
1447         arg =       ((wxPyEvent*)&event)->GetSelf();
1448         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1449     }
1450     else if ( className == wxT("wxPyCommandEvent") ) {
1451         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1452         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1453     }
1454     else {
1455         arg = wxPyConstructObject((void*)&event, className);
1456     }
1457
1458     if (!arg) {
1459         PyErr_Print();
1460     } else {
1461         // "intern" the pre/post method names to speed up the HasAttr
1462         static PyObject* s_preName  = NULL;
1463         static PyObject* s_postName = NULL;
1464         if (s_preName == NULL) {
1465             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1466             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1467         }
1468
1469         // Check if the event object needs some preinitialization
1470         if (PyObject_HasAttr(arg, s_preName)) {
1471             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1472             if ( result ) {
1473                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1474                 PyErr_Clear();       // Just in case...
1475             } else {
1476                 PyErr_Print();
1477             }
1478         }
1479
1480         // Call the event handler, passing the event object
1481         tuple = PyTuple_New(1);
1482         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1483         result = PyEval_CallObject(func, tuple);
1484         if ( result ) {
1485             Py_DECREF(result);   // result is ignored, but we still need to decref it
1486             PyErr_Clear();       // Just in case...
1487         } else {
1488             PyErr_Print();
1489         }
1490
1491         // Check if the event object needs some post cleanup
1492         if (PyObject_HasAttr(arg, s_postName)) {
1493             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1494             if ( result ) {
1495                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1496                 PyErr_Clear();       // Just in case...
1497             } else {
1498                 PyErr_Print();
1499             }
1500         }
1501
1502         if ( checkSkip ) {
1503             // if the event object was one of our special types and
1504             // it had been cloned, then we need to extract the Skipped
1505             // value from the original and set it in the clone.
1506             result = PyObject_CallMethod(arg, "GetSkipped", "");
1507             if ( result ) {
1508                 event.Skip(PyInt_AsLong(result));
1509                 Py_DECREF(result);
1510             } else {
1511                 PyErr_Print();
1512             }
1513         }
1514         Py_DECREF(tuple);
1515     }
1516     wxPyEndBlockThreads(blocked);
1517 }
1518
1519
1520 //----------------------------------------------------------------------
1521
1522 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1523       m_lastFound = NULL;
1524       m_self = other.m_self;
1525       m_class = other.m_class;
1526       if (m_self) {
1527           Py_INCREF(m_self);
1528           Py_INCREF(m_class);
1529       }
1530 }
1531
1532
1533 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1534     m_self = self;
1535     m_class = klass;
1536     m_incRef = incref;
1537     if (incref) {
1538         Py_INCREF(m_self);
1539         Py_INCREF(m_class);
1540     }
1541 }
1542
1543
1544 #if PYTHON_API_VERSION >= 1011
1545
1546 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1547 // in which the method was defined.  Starting with 2.2 it returns
1548 // "class that asked for the method" which seems totally bogus to me
1549 // but apprently it fixes some obscure problem waiting to happen in
1550 // Python.  Since the API was not documented Guido and the gang felt
1551 // safe in changing it.  Needless to say that totally screwed up the
1552 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1553 // code to find the class where the method is actually defined...
1554
1555 static
1556 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1557 {
1558     int i, n;
1559
1560     if (PyType_Check(klass)) {      // new style classes
1561         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1562         PyTypeObject* type = (PyTypeObject*)klass;
1563         PyObject *mro, *res, *base, *dict;
1564         /* Look in tp_dict of types in MRO */
1565         mro = type->tp_mro;
1566         assert(PyTuple_Check(mro));
1567         n = PyTuple_GET_SIZE(mro);
1568         for (i = 0; i < n; i++) {
1569             base = PyTuple_GET_ITEM(mro, i);
1570             if (PyClass_Check(base))
1571                 dict = ((PyClassObject *)base)->cl_dict;
1572             else {
1573                 assert(PyType_Check(base));
1574                 dict = ((PyTypeObject *)base)->tp_dict;
1575             }
1576             assert(dict && PyDict_Check(dict));
1577             res = PyDict_GetItem(dict, name);
1578             if (res != NULL)
1579                 return base;
1580         }
1581         return NULL;
1582     }
1583
1584     else if (PyClass_Check(klass)) { // old style classes
1585         // This code is borrowed/adapted from class_lookup in classobject.c
1586         PyClassObject* cp = (PyClassObject*)klass;
1587         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1588         if (value != NULL) {
1589             return (PyObject*)cp;
1590         }
1591         n = PyTuple_Size(cp->cl_bases);
1592         for (i = 0; i < n; i++) {
1593             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1594             PyObject *v = PyFindClassWithAttr(base, name);
1595             if (v != NULL)
1596                 return v;
1597         }
1598         return NULL;
1599     }
1600     return NULL;
1601 }
1602 #endif
1603
1604
1605 static
1606 PyObject* PyMethod_GetDefiningClass(PyObject* method, PyObject* nameo)
1607 {
1608     PyObject* mgc = PyMethod_GET_CLASS(method);
1609
1610 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1611     return mgc;
1612 #else                             // 2.2 and after, the hard way...
1613     return PyFindClassWithAttr(mgc, nameo);
1614 #endif
1615 }
1616
1617
1618
1619 // To avoid recursion when an overridden virtual method wants to call the base
1620 // class version, temporarily set an attribute in the instance with the same
1621 // name as the method.  Then the PyObject_GetAttr in the next findCallback
1622 // will return this attribute and the PyMethod_Check will fail.
1623
1624 void wxPyCallbackHelper::setRecursionGuard(PyObject* method) const
1625 {
1626     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1627     PyObject_SetAttr(m_self, func->func_name, Py_None);
1628 }
1629
1630 void wxPyCallbackHelper::clearRecursionGuard(PyObject* method) const
1631 {
1632     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1633     if (PyObject_HasAttr(m_self, func->func_name)) {
1634         PyObject_DelAttr(m_self, func->func_name);
1635     }
1636 }
1637
1638 // bool wxPyCallbackHelper::hasRecursionGuard(PyObject* method) const
1639 // {
1640 //     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1641 //     if (PyObject_HasAttr(m_self, func->func_name)) {
1642 //         PyObject* attr = PyObject_GetAttr(m_self, func->func_name);
1643 //         bool retval = (attr == Py_None);
1644 //         Py_DECREF(attr);
1645 //         return retval;
1646 //     }
1647 //     return false;
1648 // }
1649
1650
1651 bool wxPyCallbackHelper::findCallback(const char* name, bool setGuard) const {
1652     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1653     PyObject *method, *klass;
1654     PyObject* nameo = PyString_FromString(name);
1655     self->m_lastFound = NULL;
1656
1657     // If the object (m_self) has an attibute of the given name...
1658     if (m_self && PyObject_HasAttr(m_self, nameo)) {
1659         method = PyObject_GetAttr(m_self, nameo);
1660
1661         // ...and if that attribute is a method, and if that method's class is
1662         // not from the registered class or a base class...
1663         if (PyMethod_Check(method) &&
1664             (klass = PyMethod_GetDefiningClass(method, nameo)) != NULL &&
1665             (klass != m_class) &&
1666             PyObject_IsSubclass(klass, m_class)) {
1667
1668             // ...then we'll save a pointer to the method so callCallback can
1669             // call it.  But first, set a recursion guard in case the
1670             // overridden method wants to call the base class version.
1671             if (setGuard)
1672                 setRecursionGuard(method);
1673             self->m_lastFound = method;
1674         }
1675         else {
1676             Py_DECREF(method);
1677         }
1678     }
1679
1680     Py_DECREF(nameo);
1681     return m_lastFound != NULL;
1682 }
1683
1684
1685 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1686     PyObject*   result;
1687     int         retval = false;
1688
1689     result = callCallbackObj(argTuple);
1690     if (result) {                       // Assumes an integer return type...
1691         retval = PyInt_AsLong(result);
1692         Py_DECREF(result);
1693         PyErr_Clear();                  // forget about it if it's not...
1694     }
1695     return retval;
1696 }
1697
1698 // Invoke the Python callable object, returning the raw PyObject return
1699 // value.  Caller should DECREF the return value and also manage the GIL.
1700 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1701     PyObject* result;
1702
1703     // Save a copy of the pointer in case the callback generates another
1704     // callback.  In that case m_lastFound will have a different value when
1705     // it gets back here...
1706     PyObject* method = m_lastFound;
1707
1708     result = PyEval_CallObject(method, argTuple);
1709     clearRecursionGuard(method);
1710
1711     Py_DECREF(argTuple);
1712     Py_DECREF(method);
1713     if (!result) {
1714         PyErr_Print();
1715     }
1716     return result;
1717 }
1718
1719
1720 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1721     cbh.setSelf(self, klass, incref);
1722 }
1723
1724 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name, bool setGuard) {
1725     return cbh.findCallback(name, setGuard);
1726 }
1727
1728 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1729     return cbh.callCallback(argTuple);
1730 }
1731
1732 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1733     return cbh.callCallbackObj(argTuple);
1734 }
1735
1736
1737 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1738     if (cbh->m_incRef && Py_IsInitialized()) {
1739         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1740         Py_XDECREF(cbh->m_self);
1741         Py_XDECREF(cbh->m_class);
1742         wxPyEndBlockThreads(blocked);
1743     }
1744 }
1745
1746 //---------------------------------------------------------------------------
1747 //---------------------------------------------------------------------------
1748 // These event classes can be derived from in Python and passed through the event
1749 // system without losing anything.  They do this by keeping a reference to
1750 // themselves and some special case handling in wxPyCallback::EventThunker.
1751
1752
1753 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1754     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1755     //Py_INCREF(m_self);        //      circular loops...
1756     m_cloned = false;
1757 }
1758
1759 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1760     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1761     if (m_cloned)
1762         Py_DECREF(m_self);
1763     wxPyEndBlockThreads(blocked);
1764 }
1765
1766 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1767     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1768     if (m_cloned)
1769         Py_DECREF(m_self);
1770     m_self = self;
1771     if (clone) {
1772         Py_INCREF(m_self);
1773         m_cloned = true;
1774     }
1775     wxPyEndBlockThreads(blocked);
1776 }
1777
1778 PyObject* wxPyEvtSelfRef::GetSelf() const {
1779     Py_INCREF(m_self);
1780     return m_self;
1781 }
1782
1783
1784 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1785 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1786
1787
1788 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1789     : wxEvent(winid, commandType) {
1790 }
1791
1792
1793 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1794     : wxEvent(evt)
1795 {
1796     SetSelf(evt.m_self, true);
1797 }
1798
1799
1800 wxPyEvent::~wxPyEvent() {
1801 }
1802
1803
1804 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1805     : wxCommandEvent(commandType, id) {
1806 }
1807
1808
1809 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1810     : wxCommandEvent(evt)
1811 {
1812     SetSelf(evt.m_self, true);
1813 }
1814
1815
1816 wxPyCommandEvent::~wxPyCommandEvent() {
1817 }
1818
1819
1820
1821
1822
1823 //---------------------------------------------------------------------------
1824 //---------------------------------------------------------------------------
1825 // Convert a wxList to a Python List, only works for lists of wxObjects
1826
1827 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1828     wxList*     list = (wxList*)listbase;  // this is probably bad...
1829     PyObject*   pyList;
1830     PyObject*   pyObj;
1831     wxObject*   wxObj;
1832     wxNode*     node = list->GetFirst();
1833
1834     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1835     pyList = PyList_New(0);
1836     while (node) {
1837         wxObj = node->GetData();
1838         pyObj = wxPyMake_wxObject(wxObj,false);
1839         PyList_Append(pyList, pyObj);
1840         Py_DECREF(pyObj);  // the Append also does an INCREF, that's one more than we need.
1841         node = node->GetNext();
1842     }
1843     wxPyEndBlockThreads(blocked);
1844     return pyList;
1845 }
1846
1847 //----------------------------------------------------------------------
1848
1849 long wxPyGetWinHandle(wxWindow* win) {
1850
1851 #ifdef __WXMSW__
1852     return (long)win->GetHandle();
1853 #endif
1854
1855 #if defined(__WXGTK__) || defined(__WXX11)
1856     return (long)GetXWindow(win);
1857 #endif
1858
1859 #ifdef __WXMAC__
1860     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
1861     return (long)win->GetHandle();
1862 #endif
1863
1864     return 0;
1865 }
1866
1867 //----------------------------------------------------------------------
1868 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1869 // included in every file over and over again...
1870
1871 wxString* wxString_in_helper(PyObject* source) {
1872     wxString* target = NULL;
1873
1874     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1875         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
1876         return NULL;
1877     }
1878 #if wxUSE_UNICODE
1879     PyObject* uni = source;
1880     if (PyString_Check(source)) {
1881         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1882         if (PyErr_Occurred()) return NULL;
1883     }
1884     target = new wxString();
1885     size_t len = PyUnicode_GET_SIZE(uni);
1886     if (len) {
1887         PyUnicode_AsWideChar((PyUnicodeObject*)uni, wxStringBuffer(*target, len), len);
1888     }
1889
1890     if (PyString_Check(source))
1891         Py_DECREF(uni);
1892 #else
1893     // Convert to a string object if it isn't already, then to wxString
1894     PyObject* str = source;
1895     if (PyUnicode_Check(source)) {
1896         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1897         if (PyErr_Occurred()) return NULL;
1898     }
1899     else if (!PyString_Check(source)) {
1900         str = PyObject_Str(source);
1901         if (PyErr_Occurred()) return NULL;
1902     }
1903     char* tmpPtr; Py_ssize_t tmpSize;
1904     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1905     target = new wxString(tmpPtr, tmpSize);
1906
1907     if (!PyString_Check(source))
1908         Py_DECREF(str);
1909 #endif // wxUSE_UNICODE
1910
1911     return target;
1912 }
1913
1914
1915 // Similar to above except doesn't use "new" and doesn't set an exception
1916 wxString Py2wxString(PyObject* source)
1917 {
1918     wxString target;
1919
1920 #if wxUSE_UNICODE
1921     // Convert to a unicode object, if not already, then to a wxString
1922     PyObject* uni = source;
1923     if (!PyUnicode_Check(source)) {
1924         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1925         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
1926     }
1927     size_t len = PyUnicode_GET_SIZE(uni);
1928     if (len) {
1929         PyUnicode_AsWideChar((PyUnicodeObject*)uni, wxStringBuffer(target, len), len);
1930     }
1931
1932     if (!PyUnicode_Check(source))
1933         Py_DECREF(uni);
1934 #else
1935     // Convert to a string object if it isn't already, then to wxString
1936     PyObject* str = source;
1937     if (PyUnicode_Check(source)) {
1938         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1939         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1940     }
1941     else if (!PyString_Check(source)) {
1942         str = PyObject_Str(source);
1943         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1944     }
1945     char* tmpPtr; Py_ssize_t tmpSize;
1946     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1947     target = wxString(tmpPtr, tmpSize);
1948
1949     if (!PyString_Check(source))
1950         Py_DECREF(str);
1951 #endif // wxUSE_UNICODE
1952
1953     return target;
1954 }
1955
1956
1957 // Make either a Python String or Unicode object, depending on build mode
1958 PyObject* wx2PyString(const wxString& src)
1959 {
1960     PyObject* str;
1961 #if wxUSE_UNICODE
1962     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
1963 #else
1964     str = PyString_FromStringAndSize(src.c_str(), src.Len());
1965 #endif
1966     return str;
1967 }
1968
1969
1970
1971 void wxSetDefaultPyEncoding(const char* encoding)
1972 {
1973     strncpy(wxPyDefaultEncoding, encoding, DEFAULTENCODING_SIZE);
1974 }
1975
1976 const char* wxGetDefaultPyEncoding()
1977 {
1978     return wxPyDefaultEncoding;
1979 }
1980
1981 //----------------------------------------------------------------------
1982
1983
1984 byte* byte_LIST_helper(PyObject* source) {
1985     if (!PyList_Check(source)) {
1986         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1987         return NULL;
1988     }
1989     int count = PyList_Size(source);
1990     byte* temp = new byte[count];
1991     if (! temp) {
1992         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1993         return NULL;
1994     }
1995     for (int x=0; x<count; x++) {
1996         PyObject* o = PyList_GetItem(source, x);
1997         if (! PyInt_Check(o)) {
1998             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1999             return NULL;
2000         }
2001         temp[x] = (byte)PyInt_AsLong(o);
2002     }
2003     return temp;
2004 }
2005
2006
2007 int* int_LIST_helper(PyObject* source) {
2008     if (!PyList_Check(source)) {
2009         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2010         return NULL;
2011     }
2012     int count = PyList_Size(source);
2013     int* temp = new int[count];
2014     if (! temp) {
2015         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2016         return NULL;
2017     }
2018     for (int x=0; x<count; x++) {
2019         PyObject* o = PyList_GetItem(source, x);
2020         if (! PyInt_Check(o)) {
2021             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2022             return NULL;
2023         }
2024         temp[x] = PyInt_AsLong(o);
2025     }
2026     return temp;
2027 }
2028
2029
2030 long* long_LIST_helper(PyObject* source) {
2031     if (!PyList_Check(source)) {
2032         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2033         return NULL;
2034     }
2035     int count = PyList_Size(source);
2036     long* temp = new long[count];
2037     if (! temp) {
2038         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2039         return NULL;
2040     }
2041     for (int x=0; x<count; x++) {
2042         PyObject* o = PyList_GetItem(source, x);
2043         if (! PyInt_Check(o)) {
2044             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2045             return NULL;
2046         }
2047         temp[x] = PyInt_AsLong(o);
2048     }
2049     return temp;
2050 }
2051
2052
2053 char** string_LIST_helper(PyObject* source) {
2054     if (!PyList_Check(source)) {
2055         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2056         return NULL;
2057     }
2058     int count = PyList_Size(source);
2059     char** temp = new char*[count];
2060     if (! temp) {
2061         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2062         return NULL;
2063     }
2064     for (int x=0; x<count; x++) {
2065         PyObject* o = PyList_GetItem(source, x);
2066         if (! PyString_Check(o)) {
2067             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2068             return NULL;
2069         }
2070         temp[x] = PyString_AsString(o);
2071     }
2072     return temp;
2073 }
2074
2075 //---------------------------------------------------------------------------
2076 // NOTE: The following functions could really use some refactoring using
2077 // templates to make things somewhat simpler...
2078
2079 inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point)
2080 {
2081     // get the x value
2082     if (PyInt_Check(o1))
2083         point->x = (int)PyInt_AS_LONG(o1);
2084     else if (PyFloat_Check(o1))
2085         point->x = (int)PyFloat_AS_DOUBLE(o1);
2086     else if (PyNumber_Check(o1))
2087         point->x = (int)PyInt_AsLong(o1);
2088     else
2089         return false;
2090
2091     // get the y value
2092     if (PyInt_Check(o2))
2093         point->y = (int)PyInt_AS_LONG(o2);
2094     else if (PyFloat_Check(o2))
2095         point->y = (int)PyFloat_AS_DOUBLE(o2);
2096     else if (PyNumber_Check(o2))
2097         point->y = (int)PyInt_AsLong(o2);
2098     else
2099         return false;
2100
2101     return true;
2102
2103 // NOTE: This function used to have this code in it, but I don't know why it
2104 // is a problem nor what havok it will cause, so removing for now...
2105 //     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {
2106 //         // Disallow instances because they can cause havok
2107 //         return false;
2108 //     }
2109 }
2110
2111
2112 inline bool wxPoint2DFromObjects(PyObject* o1, PyObject* o2, wxPoint2D* point)
2113 {
2114     // get the x value
2115     if (PyInt_Check(o1))
2116         point->m_x = (double)PyInt_AS_LONG(o1);
2117     else if (PyFloat_Check(o1))
2118         point->m_x = (double)PyFloat_AS_DOUBLE(o1);
2119     else if (PyNumber_Check(o1))
2120         point->m_x = (double)PyFloat_AsDouble(o1);
2121     else
2122         return false;
2123
2124     // get the y value
2125     if (PyInt_Check(o2))
2126         point->m_y = (double)PyInt_AS_LONG(o2);
2127     else if (PyFloat_Check(o2))
2128         point->m_y = (double)PyFloat_AS_DOUBLE(o2);
2129     else if (PyNumber_Check(o2))
2130         point->m_y = (double)PyFloat_AsDouble(o2);
2131     else
2132         return false;
2133
2134     return true;
2135 }
2136
2137
2138
2139 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count)
2140 {
2141     int idx;
2142     wxPoint* temp;
2143     PyObject *o, *o1, *o2;
2144     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2145
2146     if (!PySequence_Check(source)) {
2147         goto error0;
2148     }
2149
2150     // The length of the sequence is returned in count.
2151     *count = PySequence_Length(source);
2152     if (*count < 0) {
2153         goto error0;
2154     }
2155
2156     temp = new wxPoint[*count];
2157     if (!temp) {
2158         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2159         return NULL;
2160     }
2161     for (idx=0; idx<*count; idx++) {
2162         // Get an item: try fast way first.
2163         if (isFast) {
2164             o = PySequence_Fast_GET_ITEM(source, idx);
2165         }
2166         else {
2167             o = PySequence_GetItem(source, idx);
2168             if (o == NULL) {
2169                 goto error1;
2170             }
2171         }
2172
2173         // Convert o to wxPoint.
2174         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2175             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2176             o1 = PySequence_Fast_GET_ITEM(o, 0);
2177             o2 = PySequence_Fast_GET_ITEM(o, 1);
2178             if (!wxPointFromObjects(o1, o2, &temp[idx])) {
2179                 goto error2;
2180             }
2181         }
2182         else if (wxPySwigInstance_Check(o)) {
2183             wxPoint* pt;
2184             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2185                 goto error2;
2186             }
2187             temp[idx] = *pt;
2188         }
2189         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2190             o1 = PySequence_GetItem(o, 0);
2191             o2 = PySequence_GetItem(o, 1);
2192             if (!wxPointFromObjects(o1, o2, &temp[idx])) {
2193                 goto error3;
2194             }
2195             Py_DECREF(o1);
2196             Py_DECREF(o2);
2197         }
2198         else {
2199             goto error2;
2200         }
2201         // Clean up.
2202         if (!isFast)
2203             Py_DECREF(o);
2204     }
2205     return temp;
2206
2207 error3:
2208     Py_DECREF(o1);
2209     Py_DECREF(o2);
2210 error2:
2211     if (!isFast)
2212         Py_DECREF(o);
2213 error1:
2214     delete [] temp;
2215 error0:
2216     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2217     return NULL;
2218 }
2219
2220
2221
2222 wxPoint2D* wxPoint2D_LIST_helper(PyObject* source, size_t *count)
2223 {
2224     size_t idx;
2225     wxPoint2D* temp;
2226     PyObject *o, *o1, *o2;
2227     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2228
2229     if (!PySequence_Check(source)) {
2230         goto error0;
2231     }
2232
2233     // The length of the sequence is returned in count.
2234     *count = PySequence_Length(source);
2235     if (*count < 0) {
2236         goto error0;
2237     }
2238
2239     temp = new wxPoint2D[*count];
2240     if (!temp) {
2241         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2242         return NULL;
2243     }
2244     for (idx=0; idx<*count; idx++) {
2245         // Get an item: try fast way first.
2246         if (isFast) {
2247             o = PySequence_Fast_GET_ITEM(source, idx);
2248         }
2249         else {
2250             o = PySequence_GetItem(source, idx);
2251             if (o == NULL) {
2252                 goto error1;
2253             }
2254         }
2255
2256         // Convert o to wxPoint.
2257         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2258             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2259             o1 = PySequence_Fast_GET_ITEM(o, 0);
2260             o2 = PySequence_Fast_GET_ITEM(o, 1);
2261             if (!wxPoint2DFromObjects(o1, o2, &temp[idx])) {
2262                 goto error2;
2263             }
2264         }
2265         else if (wxPySwigInstance_Check(o)) {
2266             wxPoint2D* pt;
2267             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint2D"))) {
2268                 goto error2;
2269             }
2270             temp[idx] = *pt;
2271         }
2272         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2273             o1 = PySequence_GetItem(o, 0);
2274             o2 = PySequence_GetItem(o, 1);
2275             if (!wxPoint2DFromObjects(o1, o2, &temp[idx])) {
2276                 goto error3;
2277             }
2278             Py_DECREF(o1);
2279             Py_DECREF(o2);
2280         }
2281         else {
2282             goto error2;
2283         }
2284         // Clean up.
2285         if (!isFast)
2286             Py_DECREF(o);
2287     }
2288     return temp;
2289
2290 error3:
2291     Py_DECREF(o1);
2292     Py_DECREF(o2);
2293 error2:
2294     if (!isFast)
2295         Py_DECREF(o);
2296 error1:
2297     delete [] temp;
2298 error0:
2299     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoint2Ds.");
2300     return NULL;
2301 }
2302
2303 //---------------------------------------------------------------------------
2304
2305
2306 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2307     if (!PyList_Check(source)) {
2308         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2309         return NULL;
2310     }
2311     int count = PyList_Size(source);
2312     wxBitmap** temp = new wxBitmap*[count];
2313     if (! temp) {
2314         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2315         return NULL;
2316     }
2317     for (int x=0; x<count; x++) {
2318         PyObject* o = PyList_GetItem(source, x);
2319         if (wxPySwigInstance_Check(o)) {
2320             wxBitmap*    pt;
2321             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2322                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2323                 return NULL;
2324             }
2325             temp[x] = pt;
2326         }
2327         else {
2328             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2329             return NULL;
2330         }
2331     }
2332     return temp;
2333 }
2334
2335
2336
2337 wxString* wxString_LIST_helper(PyObject* source) {
2338     if (!PyList_Check(source)) {
2339         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2340         return NULL;
2341     }
2342     int count = PyList_Size(source);
2343     wxString* temp = new wxString[count];
2344     if (! temp) {
2345         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2346         return NULL;
2347     }
2348     for (int x=0; x<count; x++) {
2349         PyObject* o = PyList_GetItem(source, x);
2350 #if PYTHON_API_VERSION >= 1009
2351         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2352             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2353             return NULL;
2354         }
2355 #else
2356         if (! PyString_Check(o)) {
2357             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2358             return NULL;
2359         }
2360 #endif
2361
2362         wxString* pStr = wxString_in_helper(o);
2363         temp[x] = *pStr;
2364         delete pStr;
2365     }
2366     return temp;
2367 }
2368
2369
2370 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2371     if (!PyList_Check(source)) {
2372         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2373         return NULL;
2374     }
2375     int count                = PyList_Size(source);
2376     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2377     if (! temp) {
2378         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2379         return NULL;
2380     }
2381     for (int x=0; x<count; x++) {
2382         PyObject* o = PyList_GetItem(source, x);
2383         if (wxPySwigInstance_Check(o)) {
2384             wxAcceleratorEntry* ae;
2385             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2386                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2387                 return NULL;
2388             }
2389             temp[x] = *ae;
2390         }
2391         else if (PyTuple_Check(o)) {
2392             PyObject* o1 = PyTuple_GetItem(o, 0);
2393             PyObject* o2 = PyTuple_GetItem(o, 1);
2394             PyObject* o3 = PyTuple_GetItem(o, 2);
2395             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2396         }
2397         else {
2398             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2399             return NULL;
2400         }
2401     }
2402     return temp;
2403 }
2404
2405
2406 wxPen** wxPen_LIST_helper(PyObject* source) {
2407     if (!PyList_Check(source)) {
2408         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2409         return NULL;
2410     }
2411     int count = PyList_Size(source);
2412     wxPen** temp = new wxPen*[count];
2413     if (!temp) {
2414         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2415         return NULL;
2416     }
2417     for (int x=0; x<count; x++) {
2418         PyObject* o = PyList_GetItem(source, x);
2419         if (wxPySwigInstance_Check(o)) {
2420             wxPen*  pt;
2421             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2422                 delete temp;
2423                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2424                 return NULL;
2425             }
2426             temp[x] = pt;
2427         }
2428         else {
2429             delete temp;
2430             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2431             return NULL;
2432         }
2433     }
2434     return temp;
2435 }
2436
2437
2438 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2439     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2440     PyObject *o1, *o2;
2441
2442     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2443         return false;
2444
2445     if (isFast) {
2446         o1 = PySequence_Fast_GET_ITEM(source, 0);
2447         o2 = PySequence_Fast_GET_ITEM(source, 1);
2448     }
2449     else {
2450         o1 = PySequence_GetItem(source, 0);
2451         o2 = PySequence_GetItem(source, 1);
2452     }
2453
2454     *i1 = PyInt_AsLong(o1);
2455     *i2 = PyInt_AsLong(o2);
2456
2457     if (! isFast) {
2458         Py_DECREF(o1);
2459         Py_DECREF(o2);
2460     }
2461     return true;
2462 }
2463
2464
2465 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2466     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2467     PyObject *o1, *o2, *o3, *o4;
2468
2469     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2470         return false;
2471
2472     if (isFast) {
2473         o1 = PySequence_Fast_GET_ITEM(source, 0);
2474         o2 = PySequence_Fast_GET_ITEM(source, 1);
2475         o3 = PySequence_Fast_GET_ITEM(source, 2);
2476         o4 = PySequence_Fast_GET_ITEM(source, 3);
2477     }
2478     else {
2479         o1 = PySequence_GetItem(source, 0);
2480         o2 = PySequence_GetItem(source, 1);
2481         o3 = PySequence_GetItem(source, 2);
2482         o4 = PySequence_GetItem(source, 3);
2483     }
2484
2485     *i1 = PyInt_AsLong(o1);
2486     *i2 = PyInt_AsLong(o2);
2487     *i3 = PyInt_AsLong(o3);
2488     *i4 = PyInt_AsLong(o4);
2489
2490     if (! isFast) {
2491         Py_DECREF(o1);
2492         Py_DECREF(o2);
2493         Py_DECREF(o3);
2494         Py_DECREF(o4);
2495     }
2496     return true;
2497 }
2498
2499
2500 //----------------------------------------------------------------------
2501
2502 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2503 {
2504     void* ptr;
2505
2506     if (wxPySwigInstance_Check(source) &&
2507         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2508         return true;
2509
2510     PyErr_Clear();
2511     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2512         return true;
2513
2514     return false;
2515 }
2516
2517 bool wxSize_helper(PyObject* source, wxSize** obj)
2518 {
2519     if (source == Py_None) {
2520         **obj = wxSize(-1,-1);
2521         return true;
2522     }
2523     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2524 }
2525
2526
2527 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2528 {
2529     if (source == Py_None) {
2530         **obj = wxPoint(-1,-1);
2531         return true;
2532     }
2533     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2534 }
2535
2536
2537
2538 bool wxPosition_helper(PyObject* source, wxPosition** obj)
2539 {
2540     if (source == Py_None) {
2541         **obj = wxPosition(-1,-1);
2542         return true;
2543     }
2544     return wxPyTwoIntItem_helper(source, obj, wxT("wxPosition"));
2545 }
2546
2547
2548
2549 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2550
2551     if (source == Py_None) {
2552         **obj = wxRealPoint(-1,-1);
2553         return true;
2554     }
2555
2556     // If source is an object instance then it may already be the right type
2557     if (wxPySwigInstance_Check(source)) {
2558         wxRealPoint* ptr;
2559         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2560             goto error;
2561         *obj = ptr;
2562         return true;
2563     }
2564     // otherwise a 2-tuple of floats is expected
2565     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2566         PyObject* o1 = PySequence_GetItem(source, 0);
2567         PyObject* o2 = PySequence_GetItem(source, 1);
2568         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2569             Py_DECREF(o1);
2570             Py_DECREF(o2);
2571             goto error;
2572         }
2573         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2574         Py_DECREF(o1);
2575         Py_DECREF(o2);
2576         return true;
2577     }
2578
2579  error:
2580     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2581     return false;
2582 }
2583
2584
2585
2586 bool wxRect_helper(PyObject* source, wxRect** obj) {
2587
2588     if (source == Py_None) {
2589         **obj = wxRect(-1,-1,-1,-1);
2590         return true;
2591     }
2592
2593     // If source is an object instance then it may already be the right type
2594     if (wxPySwigInstance_Check(source)) {
2595         wxRect* ptr;
2596         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2597             goto error;
2598         *obj = ptr;
2599         return true;
2600     }
2601     // otherwise a 4-tuple of integers is expected
2602     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2603         PyObject* o1 = PySequence_GetItem(source, 0);
2604         PyObject* o2 = PySequence_GetItem(source, 1);
2605         PyObject* o3 = PySequence_GetItem(source, 2);
2606         PyObject* o4 = PySequence_GetItem(source, 3);
2607         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2608             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2609             Py_DECREF(o1);
2610             Py_DECREF(o2);
2611             Py_DECREF(o3);
2612             Py_DECREF(o4);
2613             goto error;
2614         }
2615         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2616                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2617         Py_DECREF(o1);
2618         Py_DECREF(o2);
2619         Py_DECREF(o3);
2620         Py_DECREF(o4);
2621         return true;
2622     }
2623
2624  error:
2625     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2626     return false;
2627 }
2628
2629
2630
2631 bool wxColour_helper(PyObject* source, wxColour** obj) {
2632
2633     if (source == Py_None) {
2634         **obj = wxNullColour;
2635         return true;
2636     }
2637
2638     // If source is an object instance then it may already be the right type
2639     if (wxPySwigInstance_Check(source)) {
2640         wxColour* ptr;
2641         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2642             goto error;
2643         *obj = ptr;
2644         return true;
2645     }
2646     // otherwise check for a string
2647     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2648         wxString spec = Py2wxString(source);
2649         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2650             long red, green, blue;
2651             red = green = blue = 0;
2652             spec.Mid(1,2).ToLong(&red,   16);
2653             spec.Mid(3,2).ToLong(&green, 16);
2654             spec.Mid(5,2).ToLong(&blue,  16);
2655
2656             **obj = wxColour(red, green, blue);
2657             return true;
2658         }
2659         else {                                       // it's a colour name
2660             **obj = wxColour(spec);
2661             return true;
2662         }
2663     }
2664     // last chance: 3-tuple or 4-tuple of integers is expected
2665     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2666         PyObject* o1 = PySequence_GetItem(source, 0);
2667         PyObject* o2 = PySequence_GetItem(source, 1);
2668         PyObject* o3 = PySequence_GetItem(source, 2);
2669         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2670             Py_DECREF(o1);
2671             Py_DECREF(o2);
2672             Py_DECREF(o3);
2673             goto error;
2674         }
2675         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2676         Py_DECREF(o1);
2677         Py_DECREF(o2);
2678         Py_DECREF(o3);
2679         return true;
2680     }
2681     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2682         PyObject* o1 = PySequence_GetItem(source, 0);
2683         PyObject* o2 = PySequence_GetItem(source, 1);
2684         PyObject* o3 = PySequence_GetItem(source, 2);
2685         PyObject* o4 = PySequence_GetItem(source, 3);
2686         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2687             Py_DECREF(o1);
2688             Py_DECREF(o2);
2689             Py_DECREF(o3);
2690             Py_DECREF(o4);
2691             goto error;
2692         }
2693         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3), PyInt_AsLong(o4));
2694         Py_DECREF(o1);
2695         Py_DECREF(o2);
2696         Py_DECREF(o3);
2697         Py_DECREF(o4);
2698         return true;
2699     }
2700
2701  error:
2702     PyErr_SetString(PyExc_TypeError,
2703                     "Expected a wxColour object, a string containing a colour name or '#RRGGBB', or a 3- or 4-tuple of integers.");
2704     return false;
2705 }
2706
2707
2708 bool wxColour_typecheck(PyObject* source) {
2709
2710     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2711         return true;
2712
2713     if (PyString_Check(source) || PyUnicode_Check(source))
2714         return true;
2715
2716     return false;
2717 }
2718
2719
2720
2721 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2722
2723     if (source == Py_None) {
2724         **obj = wxPoint2D(-1,-1);
2725         return true;
2726     }
2727
2728     // If source is an object instance then it may already be the right type
2729     if (wxPySwigInstance_Check(source)) {
2730         wxPoint2D* ptr;
2731         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2732             goto error;
2733         *obj = ptr;
2734         return true;
2735     }
2736     // otherwise a length-2 sequence of floats is expected
2737     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2738         PyObject* o1 = PySequence_GetItem(source, 0);
2739         PyObject* o2 = PySequence_GetItem(source, 1);
2740         // This should really check for floats, not numbers -- but that would break code.
2741         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2742             Py_DECREF(o1);
2743             Py_DECREF(o2);
2744             goto error;
2745         }
2746         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2747         Py_DECREF(o1);
2748         Py_DECREF(o2);
2749         return true;
2750     }
2751  error:
2752     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wx.Point2D object.");
2753     return false;
2754 }
2755
2756
2757
2758 bool wxRect2D_helper(PyObject* source, wxRect2D** obj) {
2759
2760     if (source == Py_None) {
2761         **obj = wxRect2D(-1,-1,-1,-1);
2762         return true;
2763     }
2764
2765     // If source is an object instance then it may already be the right type
2766     if (wxPySwigInstance_Check(source)) {
2767         wxRect2D* ptr;
2768         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect2D")))
2769             goto error;
2770         *obj = ptr;
2771         return true;
2772     }
2773     // otherwise a length-4 sequence of floats is expected
2774     if (PySequence_Check(source) && PySequence_Length(source) == 4) {
2775         PyObject* o1 = PySequence_GetItem(source, 0);
2776         PyObject* o2 = PySequence_GetItem(source, 1);
2777         PyObject* o3 = PySequence_GetItem(source, 2);
2778         PyObject* o4 = PySequence_GetItem(source, 3);
2779         // This should really check for floats, not numbers -- but that would break code.
2780         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2781             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2782             Py_DECREF(o1);
2783             Py_DECREF(o2);
2784             Py_DECREF(o3);
2785             Py_DECREF(o4);
2786             goto error;
2787         }
2788         **obj = wxRect2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2),
2789                          PyFloat_AsDouble(o3), PyFloat_AsDouble(o4));
2790         Py_DECREF(o1);
2791         Py_DECREF(o2);
2792         Py_DECREF(o3);
2793         Py_DECREF(o4);
2794         return true;
2795     }
2796  error:
2797     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of floats or a wx.Rect2D object.");
2798     return false;
2799 }
2800
2801
2802 //----------------------------------------------------------------------
2803
2804 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr)
2805 {
2806     PyObject* list = PyList_New(0);
2807     for (size_t i=0; i < arr.GetCount(); i++) {
2808 #if wxUSE_UNICODE
2809         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2810 #else
2811         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2812 #endif
2813         PyList_Append(list, str);
2814         Py_DECREF(str);
2815     }
2816     return list;
2817 }
2818
2819
2820 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr)
2821 {
2822     PyObject* list = PyList_New(0);
2823     for (size_t i=0; i < arr.GetCount(); i++) {
2824         PyObject* number = PyInt_FromLong(arr[i]);
2825         PyList_Append(list, number);
2826         Py_DECREF(number);
2827     }
2828     return list;
2829 }
2830
2831
2832 PyObject* wxArrayDouble2PyList_helper(const wxArrayDouble& arr)
2833 {
2834     PyObject* list = PyList_New(0);
2835     for (size_t i=0; i < arr.GetCount(); i++) {
2836         PyObject* number = PyFloat_FromDouble(arr[i]);
2837         PyList_Append(list, number);
2838         Py_DECREF(number);
2839     }
2840     return list;
2841 }
2842
2843
2844 //----------------------------------------------------------------------
2845 // wxPyImageHandler methods
2846 //
2847 // TODO: Switch these to use wxPython's standard macros and helper classes
2848 //       for calling callbacks.
2849
2850 PyObject* wxPyImageHandler::m_DoCanRead_Name = NULL;
2851 PyObject* wxPyImageHandler::m_GetImageCount_Name = NULL;
2852 PyObject* wxPyImageHandler::m_LoadFile_Name = NULL;
2853 PyObject* wxPyImageHandler::m_SaveFile_Name = NULL;
2854
2855 PyObject* wxPyImageHandler::py_InputStream(wxInputStream* stream) {
2856     return wxPyConstructObject(new wxPyInputStream(stream),
2857                                wxT("wxPyInputStream"), 0);
2858 }
2859
2860 PyObject* wxPyImageHandler::py_Image(wxImage* image) {
2861     return wxPyConstructObject(image, wxT("wxImage"), 0);
2862 }
2863
2864 PyObject* wxPyImageHandler::py_OutputStream(wxOutputStream* stream) {
2865     return wxPyConstructObject(stream, wxT("wxOutputStream"), 0);
2866 }
2867
2868 wxPyImageHandler::wxPyImageHandler():
2869     m_self(NULL)
2870 {
2871     if (!m_DoCanRead_Name) {
2872         m_DoCanRead_Name = PyString_FromString("DoCanRead");
2873         m_GetImageCount_Name = PyString_FromString("GetImageCount");
2874         m_LoadFile_Name = PyString_FromString("LoadFile");
2875         m_SaveFile_Name = PyString_FromString("SaveFile");
2876     }
2877 }
2878
2879 wxPyImageHandler::~wxPyImageHandler() {
2880     if (m_self) {
2881         Py_DECREF(m_self);
2882         m_self = NULL;
2883     }
2884 }
2885
2886 void wxPyImageHandler::_SetSelf(PyObject *self) {
2887     // should check here for isinstance(PyImageHandler) ??
2888     m_self = self;
2889     Py_INCREF(m_self);
2890 }
2891
2892 bool wxPyImageHandler::DoCanRead(wxInputStream& stream) {
2893     // check if our object has this method
2894     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2895     if (!m_self || !PyObject_HasAttr(m_self, m_DoCanRead_Name)) {
2896         wxPyEndBlockThreads(blocked);
2897         return false;
2898     }
2899
2900     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_DoCanRead_Name,
2901                                                py_InputStream(&stream), NULL);
2902     bool retval = false;
2903     if (res) {
2904         retval = PyInt_AsLong(res);
2905         Py_DECREF(res);
2906         PyErr_Clear();
2907     }
2908     else
2909         PyErr_Print();
2910     wxPyEndBlockThreads(blocked);
2911     return retval;
2912 }
2913
2914 bool wxPyImageHandler::LoadFile( wxImage* image, wxInputStream& stream,
2915                                  bool verbose, int index ) {
2916     // check if our object has this method
2917     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2918     if (!m_self || !PyObject_HasAttr(m_self, m_LoadFile_Name)) {
2919         wxPyEndBlockThreads(blocked);
2920         return false;
2921     }
2922     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_LoadFile_Name,
2923                                                py_Image(image),
2924                                                py_InputStream(&stream),
2925                                                PyInt_FromLong(verbose),
2926                                                PyInt_FromLong(index),
2927                                                NULL);
2928     bool retval = false;
2929     if (res) {
2930         retval = PyInt_AsLong(res);
2931         Py_DECREF(res);
2932         PyErr_Clear();
2933     } else
2934         PyErr_Print();
2935     wxPyEndBlockThreads(blocked);
2936     return retval;
2937 }
2938
2939 bool wxPyImageHandler::SaveFile( wxImage* image, wxOutputStream& stream,
2940                                  bool verbose ) {
2941     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2942     if (!m_self || !PyObject_HasAttr(m_self, m_SaveFile_Name)) {
2943         wxPyEndBlockThreads(blocked);
2944         return false;
2945     }
2946     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_SaveFile_Name,
2947                                                py_Image(image),
2948                                                py_OutputStream(&stream),
2949                                                PyInt_FromLong(verbose),
2950                                                NULL);
2951     bool retval = false;
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 int wxPyImageHandler::GetImageCount( wxInputStream& stream ) {
2963     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2964     if (!m_self || !PyObject_HasAttr(m_self, m_GetImageCount_Name)) {
2965         wxPyEndBlockThreads(blocked);
2966         return 1;
2967     }
2968     PyObject *res=PyObject_CallMethodObjArgs(m_self, m_GetImageCount_Name,
2969                                              py_InputStream(&stream),
2970                                              NULL);
2971     int retval = 1;
2972     if(res) {
2973         retval=PyInt_AsLong(res);
2974         Py_DECREF(res);
2975         PyErr_Clear();
2976     } else
2977         PyErr_Print();
2978     wxPyEndBlockThreads(blocked);
2979     return retval;
2980 }
2981
2982
2983 //----------------------------------------------------------------------
2984 // Function to test if the Display (or whatever is the platform equivallent)
2985 // can be connected to.  This is accessable from wxPython as a staticmethod of
2986 // wx.App called DisplayAvailable().
2987
2988
2989 bool wxPyTestDisplayAvailable()
2990 {
2991 #ifdef __WXGTK__
2992     Display* display;
2993     display = XOpenDisplay(NULL);
2994     if (display == NULL)
2995         return false;
2996     XCloseDisplay(display);
2997     return true;
2998 #endif
2999
3000 #ifdef __WXMAC__
3001     // This is adapted from Python's Mac/Modules/MacOS.c in the
3002     // MacOS_WMAvailable function.
3003     bool rv;
3004     ProcessSerialNumber psn;
3005
3006     /*
3007     ** This is a fairly innocuous call to make if we don't have a window
3008     ** manager, or if we have no permission to talk to it. It will print
3009     ** a message on stderr, but at least it won't abort the process.
3010     ** It appears the function caches the result itself, and it's cheap, so
3011     ** no need for us to cache.
3012     */
3013 #ifdef kCGNullDirectDisplay
3014     /* On 10.1 CGMainDisplayID() isn't available, and
3015     ** kCGNullDirectDisplay isn't defined.
3016     */
3017     if (CGMainDisplayID() == 0) {
3018         rv = false;
3019     } else
3020 #endif
3021     {
3022         // Also foreground the application on the first call as a side-effect.
3023         if (GetCurrentProcess(&psn) < 0 || SetFrontProcess(&psn) < 0) {
3024             rv = false;
3025         } else {
3026             rv = true;
3027         }
3028     }
3029     return rv;
3030 #endif
3031
3032 #ifdef __WXMSW__
3033     // TODO...
3034     return true;
3035 #endif
3036 }
3037
3038
3039 //----------------------------------------------------------------------
3040 //----------------------------------------------------------------------
3041
3042
3043
3044