wxPython/src/helpers.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpers.cpp
   3 // Purpose:     Helper functions/classes for the wxPython extension module
   4 //
   5 // Author:      Robin Dunn
   6 //
   7 // Created:     1-July-1997
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13
  14 #undef DEBUG
  15 #include <Python.h>
  16 #include "wx/wxPython/wxPython_int.h"
  17 #include "wx/wxPython/pyistream.h"
  18 #include "wx/wxPython/swigver.h"
  19 #include "wx/wxPython/twoitem.h"
  20
  21 #ifdef __WXMSW__
  22 #include <wx/msw/private.h>
  23 #include <wx/msw/winundef.h>
  24 #include <wx/msw/msvcrt.h>
  25 #endif
  26
  27 #ifdef __WXGTK__
  28 #include <gdk/gdk.h>
  29 #include <gdk/gdkx.h>
  30 #include <gtk/gtk.h>
  31 #include <gdk/gdkprivate.h>
  32 #include <wx/gtk/win_gtk.h>
  33 #define GetXWindow(wxwin) (wxwin)->m_wxwindow ? \
  34                           GDK_WINDOW_XWINDOW(GTK_PIZZA((wxwin)->m_wxwindow)->bin_window) : \
  35                           GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
  36 #include <locale.h>
  37 #endif
  38
  39 #ifdef __WXX11__
  40 #include "wx/x11/privx.h"
  41 #define GetXWindow(wxwin)   ((Window)(wxwin)->GetHandle())
  42 #endif
  43
  44 #ifdef __WXMAC__
  45 #include <wx/mac/private.h>
  46 #endif
  47
  48 #include <wx/clipbrd.h>
  49 #include <wx/mimetype.h>
  50 #include <wx/image.h>
  51
  52 //----------------------------------------------------------------------
  53
  54 #if PYTHON_API_VERSION < 1009 && wxUSE_UNICODE
  55 #error Python must support Unicode to use wxWindows Unicode
  56 #endif
  57
  58 //----------------------------------------------------------------------
  59
  60 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  61 bool wxPyDoCleanup = false;
  62 bool wxPyDoingCleanup = false;
  63
  64
  65 #ifdef WXP_WITH_THREAD
  66 #if !wxPyUSE_GIL_STATE
  67 struct wxPyThreadState {
  68     unsigned long  tid;
  69     PyThreadState* tstate;
  70
  71     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  72         : tid(_tid), tstate(_tstate) {}
  73 };
  74
  75 #include <wx/dynarray.h>
  76 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  77 #include <wx/arrimpl.cpp>
  78 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  79
  80 wxPyThreadStateArray* wxPyTStates = NULL;
  81 wxMutex*              wxPyTMutex = NULL;
  82
  83 #endif
  84 #endif
  85
  86
  87 #define DEFAULTENCODING_SIZE 64
  88 static char wxPyDefaultEncoding[DEFAULTENCODING_SIZE] = "ascii";
  89
  90 static PyObject* wxPython_dict = NULL;
  91 static PyObject* wxPyAssertionError = NULL;
  92 static PyObject* wxPyNoAppError = NULL;
  93
  94 PyObject* wxPyPtrTypeMap = NULL;
  95
  96
  97 #ifdef __WXMSW__             // If building for win32...
  98 //----------------------------------------------------------------------
  99 // This gets run when the DLL is loaded.  We just need to save a handle.
 100 //----------------------------------------------------------------------
 101
 102 extern "C"
 103 BOOL WINAPI DllMain(
 104     HINSTANCE   hinstDLL,    // handle to DLL module
 105     DWORD       fdwReason,   // reason for calling function
 106     LPVOID      lpvReserved  // reserved
 107    )
 108 {
 109     // If wxPython is embedded in another wxWidgets app then
 110     // the instance has already been set.
 111     if (! wxGetInstance())
 112         wxSetInstance(hinstDLL);
 113     return true;
 114 }
 115 #endif
 116
 117 //----------------------------------------------------------------------
 118 // Classes for implementing the wxp main application shell.
 119 //----------------------------------------------------------------------
 120
 121 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 122
 123
 124 wxPyApp::wxPyApp() {
 125     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 126     m_startupComplete = false;
 127 }
 128
 129
 130 wxPyApp::~wxPyApp() {
 131     wxPythonApp = NULL;
 132     wxApp::SetInstance(NULL);
 133 }
 134
 135
 136 // This one isn't acutally called...  We fake it with _BootstrapApp
 137 bool wxPyApp::OnInit() {
 138     return false;
 139 }
 140
 141
 142 int  wxPyApp::MainLoop() {
 143     int retval = 0;
 144
 145     DeletePendingObjects();
 146     bool initialized = wxTopLevelWindows.GetCount() != 0;
 147     if (initialized) {
 148         if ( m_exitOnFrameDelete == Later ) {
 149             m_exitOnFrameDelete = Yes;
 150         }
 151
 152         retval = wxApp::MainLoop();
 153         OnExit();
 154     }
 155     return retval;
 156 }
 157
 158
 159 bool wxPyApp::OnInitGui() {
 160     bool rval=true;
 161     wxApp::OnInitGui();  // in this case always call the base class version
 162     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 163     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 164         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 165     wxPyEndBlockThreads(blocked);
 166     return rval;
 167 }
 168
 169
 170 int wxPyApp::OnExit() {
 171     int rval=0;
 172     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 173     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 174         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 175     wxPyEndBlockThreads(blocked);
 176     wxApp::OnExit();  // in this case always call the base class version
 177     return rval;
 178 }
 179
 180
 181
 182 void wxPyApp::ExitMainLoop() {
 183     bool found;
 184     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 185     if ((found = wxPyCBH_findCallback(m_myInst, "ExitMainLoop")))
 186         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 187     wxPyEndBlockThreads(blocked);
 188     if (! found)
 189         wxApp::ExitMainLoop();
 190 }
 191
 192
 193 #ifdef __WXDEBUG__
 194 void wxPyApp::OnAssertFailure(const wxChar *file,
 195                               int line,
 196                               const wxChar *func,
 197                               const wxChar *cond,
 198                               const wxChar *msg)
 199 {
 200     // if we're not fully initialized then just log the error
 201     if (! m_startupComplete) {
 202         wxString buf;
 203         buf.Alloc(4096);
 204         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 205                    file, line, cond);
 206         if ( func && *func )
 207             buf << wxT(" in ") << func << wxT("()");
 208         if (msg != NULL)
 209             buf << wxT(": ") << msg;
 210
 211         wxLogDebug(buf);
 212         return;
 213     }
 214
 215     // If the OnAssert is overloaded in the Python class then call it...
 216     bool found;
 217     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 218     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 219         PyObject* fso = wx2PyString(file);
 220         PyObject* cso = wx2PyString(file);
 221         PyObject* mso;
 222         if (msg != NULL)
 223             mso = wx2PyString(file);
 224         else {
 225             mso = Py_None; Py_INCREF(Py_None);
 226         }
 227         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 228         Py_DECREF(fso);
 229         Py_DECREF(cso);
 230         Py_DECREF(mso);
 231     }
 232     wxPyEndBlockThreads(blocked);
 233
 234     // ...otherwise do our own thing with it
 235     if (! found) {
 236         // ignore it?
 237         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 238             return;
 239
 240         // turn it into a Python exception?
 241         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 242             wxString buf;
 243             buf.Alloc(4096);
 244             buf.Printf(wxT("C++ assertion \"%s\" failed at %s(%d)"), cond, file, line);
 245             if ( func && *func )
 246                 buf << wxT(" in ") << func << wxT("()");
 247             if (msg != NULL)
 248                 buf << wxT(": ") << msg;
 249
 250
 251             // set the exception
 252             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 253             PyObject* s = wx2PyString(buf);
 254             PyErr_SetObject(wxPyAssertionError, s);
 255             Py_DECREF(s);
 256             wxPyEndBlockThreads(blocked);
 257
 258             // Now when control returns to whatever API wrapper was called from
 259             // Python it should detect that an exception is set and will return
 260             // NULL, signalling the exception to Python.
 261         }
 262
 263         // Send it to the normal log destination, but only if
 264         // not _DIALOG because it will call this too
 265         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 266             wxString buf;
 267             buf.Alloc(4096);
 268             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 269                        file, line, cond);
 270             if ( func && *func )
 271                 buf << wxT(" in ") << func << wxT("()");
 272             if (msg != NULL)
 273                 buf << wxT(": ") << msg;
 274             wxLogDebug(buf);
 275         }
 276
 277         // do the normal wx assert dialog?
 278         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 279             wxApp::OnAssertFailure(file, line, func, cond, msg);
 280     }
 281 }
 282 #endif
 283
 284     // For catching Apple Events
 285 void wxPyApp::MacOpenFile(const wxString &fileName)
 286 {
 287     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 288     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 289         PyObject* s = wx2PyString(fileName);
 290         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 291         Py_DECREF(s);
 292     }
 293     wxPyEndBlockThreads(blocked);
 294 }
 295
 296 void wxPyApp::MacPrintFile(const wxString &fileName)
 297 {
 298     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 299     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 300         PyObject* s = wx2PyString(fileName);
 301         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 302         Py_DECREF(s);
 303     }
 304     wxPyEndBlockThreads(blocked);
 305 }
 306
 307 void wxPyApp::MacNewFile()
 308 {
 309     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 310     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 311         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 312     wxPyEndBlockThreads(blocked);
 313 }
 314
 315 void wxPyApp::MacReopenApp()
 316 {
 317     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 318     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 319         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 320     wxPyEndBlockThreads(blocked);
 321 }
 322
 323
 324 /*static*/
 325 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 326 #ifdef __WXMAC__
 327     return s_macSupportPCMenuShortcuts;
 328 #else
 329     return 0;
 330 #endif
 331 }
 332
 333 /*static*/
 334 long wxPyApp::GetMacAboutMenuItemId() {
 335 #ifdef __WXMAC__
 336     return s_macAboutMenuItemId;
 337 #else
 338     return 0;
 339 #endif
 340 }
 341
 342 /*static*/
 343 long wxPyApp::GetMacPreferencesMenuItemId() {
 344 #ifdef __WXMAC__
 345     return s_macPreferencesMenuItemId;
 346 #else
 347     return 0;
 348 #endif
 349 }
 350
 351 /*static*/
 352 long wxPyApp::GetMacExitMenuItemId() {
 353 #ifdef __WXMAC__
 354     return s_macExitMenuItemId;
 355 #else
 356     return 0;
 357 #endif
 358 }
 359
 360 /*static*/
 361 wxString wxPyApp::GetMacHelpMenuTitleName() {
 362 #ifdef __WXMAC__
 363     return s_macHelpMenuTitleName;
 364 #else
 365     return wxEmptyString;
 366 #endif
 367 }
 368
 369 /*static*/
 370 void wxPyApp::SetMacSupportPCMenuShortcuts(bool val) {
 371 #ifdef __WXMAC__
 372     s_macSupportPCMenuShortcuts = val;
 373 #endif
 374 }
 375
 376 /*static*/
 377 void wxPyApp::SetMacAboutMenuItemId(long val) {
 378 #ifdef __WXMAC__
 379     s_macAboutMenuItemId = val;
 380 #endif
 381 }
 382
 383 /*static*/
 384 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 385 #ifdef __WXMAC__
 386     s_macPreferencesMenuItemId = val;
 387 #endif
 388 }
 389
 390 /*static*/
 391 void wxPyApp::SetMacExitMenuItemId(long val) {
 392 #ifdef __WXMAC__
 393     s_macExitMenuItemId = val;
 394 #endif
 395 }
 396
 397 /*static*/
 398 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 399 #ifdef __WXMAC__
 400     s_macHelpMenuTitleName = val;
 401 #endif
 402 }
 403
 404
 405 // This finishes the initialization of wxWindows and then calls the OnInit
 406 // that should be present in the derived (Python) class.
 407 void wxPyApp::_BootstrapApp()
 408 {
 409     static      bool haveInitialized = false;
 410     bool        result;
 411     wxPyBlock_t     blocked;
 412     PyObject*   retval = NULL;
 413     PyObject*   pyint  = NULL;
 414
 415
 416     // Only initialize wxWidgets once
 417     if (! haveInitialized) {
 418
 419         // Get any command-line args passed to this program from the sys module
 420         int    argc = 0;
 421         char** argv = NULL;
 422         blocked = wxPyBeginBlockThreads();
 423
 424         PyObject* sysargv = PySys_GetObject("argv");
 425         PyObject* executable = PySys_GetObject("executable");
 426
 427         if (sysargv != NULL && executable != NULL) {
 428             argc = PyList_Size(sysargv) + 1;
 429             argv = new char*[argc+1];
 430             argv[0] = strdup(PyString_AsString(executable));
 431             int x;
 432             for(x=1; x<argc; x++) {
 433                 PyObject *pyArg = PyList_GetItem(sysargv, x-1);
 434                 argv[x] = strdup(PyString_AsString(pyArg));
 435             }
 436             argv[argc] = NULL;
 437         }
 438         wxPyEndBlockThreads(blocked);
 439
 440         // Initialize wxWidgets
 441         result = wxEntryStart(argc, argv);
 442         // wxApp takes ownership of the argv array, don't delete it here
 443
 444         blocked = wxPyBeginBlockThreads();
 445         if (! result)  {
 446             PyErr_SetString(PyExc_SystemError,
 447                             "wxEntryStart failed, unable to initialize wxWidgets!"
 448 #ifdef __WXGTK__
 449                             "  (Is DISPLAY set properly?)"
 450 #endif
 451                 );
 452             goto error;
 453         }
 454
 455         // On wxGTK the locale will be changed to match the system settings,
 456         // but Python before 2.4 needs to have LC_NUMERIC set to "C" in order
 457         // for the floating point conversions and such to work right.
 458 #if defined(__WXGTK__) && PY_VERSION_HEX < 0x02040000
 459         setlocale(LC_NUMERIC, "C");
 460 #endif
 461
 462 //        wxSystemOptions::SetOption(wxT("mac.textcontrol-use-mlte"), 1);
 463
 464         wxPyEndBlockThreads(blocked);
 465         haveInitialized = true;
 466     }
 467     else {
 468         this->argc = 0;
 469         this->argv = NULL;
 470     }
 471
 472
 473     // It's now ok to generate exceptions for assertion errors.
 474     wxPythonApp->SetStartupComplete(true);
 475
 476
 477     // Call the Python wxApp's OnPreInit and OnInit functions
 478     blocked = wxPyBeginBlockThreads();
 479     if (wxPyCBH_findCallback(m_myInst, "OnPreInit")) {
 480         PyObject* method = m_myInst.GetLastFound();
 481         PyObject* argTuple = PyTuple_New(0);
 482         retval = PyEval_CallObject(method, argTuple);
 483         m_myInst.clearRecursionGuard(method);
 484         Py_DECREF(argTuple);
 485         Py_DECREF(method);
 486         if (retval == NULL)
 487             goto error;
 488     }
 489     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 490
 491         PyObject* method = m_myInst.GetLastFound();
 492         PyObject* argTuple = PyTuple_New(0);
 493         retval = PyEval_CallObject(method, argTuple);
 494         m_myInst.clearRecursionGuard(method);
 495         Py_DECREF(argTuple);
 496         Py_DECREF(method);
 497         if (retval == NULL)
 498             // Don't PyErr_Print here, let the exception in this case go back
 499             // up to the wx.PyApp.__init__ scope.
 500             goto error;
 501
 502         pyint = PyNumber_Int(retval);
 503         if (! pyint) {
 504             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 505             goto error;
 506         }
 507         result = PyInt_AS_LONG(pyint);
 508     }
 509     else {
 510         // Is it okay if there is no OnInit?  Probably so...
 511         result = true;
 512     }
 513
 514     if (! result) {
 515         PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
 516     }
 517
 518  error:
 519     Py_XDECREF(retval);
 520     Py_XDECREF(pyint);
 521
 522     wxPyEndBlockThreads(blocked);
 523 };
 524
 525 //---------------------------------------------------------------------
 526 //----------------------------------------------------------------------
 527
 528
 529 #if 0
 530 static char* wxPyCopyCString(const wxChar* src)
 531 {
 532     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 533     size_t len = strlen(buff);
 534     char*  dest = new char[len+1];
 535     strcpy(dest, buff);
 536     return dest;
 537 }
 538
 539 #if wxUSE_UNICODE
 540 static char* wxPyCopyCString(const char* src)   // we need a char version too
 541 {
 542     size_t len = strlen(src);
 543     char*  dest = new char[len+1];
 544     strcpy(dest, src);
 545     return dest;
 546 }
 547 #endif
 548
 549 static wxChar* wxPyCopyWString(const char *src)
 550 {
 551     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 552     wxString str(src, *wxConvCurrent);
 553     return copystring(str);
 554 }
 555
 556 #if wxUSE_UNICODE
 557 static wxChar* wxPyCopyWString(const wxChar *src)
 558 {
 559     return copystring(src);
 560 }
 561 #endif
 562 #endif
 563
 564
 565 inline const char* dropwx(const char* name) {
 566     if (name[0] == 'w' && name[1] == 'x')
 567         return name+2;
 568     else
 569         return name;
 570 }
 571
 572 //----------------------------------------------------------------------
 573
 574 // This function is called when the wx._core_ module is imported to do some
 575 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 576 // wxPyApp::_BootstrapApp
 577 void __wxPyPreStart(PyObject* moduleDict)
 578 {
 579
 580 #ifdef __WXMSW__
 581 //     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF
 582 //                     | _CRTDBG_CHECK_ALWAYS_DF
 583 //                     | _CRTDBG_DELAY_FREE_MEM_DF
 584 //         );
 585 #endif
 586
 587 #ifdef WXP_WITH_THREAD
 588 #if wxPyUSE_GIL_STATE
 589     PyEval_InitThreads();
 590 #else
 591     PyEval_InitThreads();
 592     wxPyTStates = new wxPyThreadStateArray;
 593     wxPyTMutex = new wxMutex;
 594
 595     // Save the current (main) thread state in our array
 596     PyThreadState* tstate = wxPyBeginAllowThreads();
 597     wxPyEndAllowThreads(tstate);
 598 #endif
 599 #endif
 600
 601     // Ensure that the build options in the DLL (or whatever) match this build
 602     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 603
 604     wxInitAllImageHandlers();
 605 }
 606
 607
 608
 609 void __wxPyCleanup() {
 610     wxPyDoingCleanup = true;
 611     if (wxPyDoCleanup) {
 612         wxPyDoCleanup = false;
 613         wxEntryCleanup();
 614     }
 615 #ifdef WXP_WITH_THREAD
 616 #if !wxPyUSE_GIL_STATE
 617     delete wxPyTMutex;
 618     wxPyTMutex = NULL;
 619     wxPyTStates->Empty();
 620     delete wxPyTStates;
 621     wxPyTStates = NULL;
 622 #endif
 623 #endif
 624 }
 625
 626
 627 // Save a reference to the dictionary of the wx._core module, and inject
 628 // a few more things into it.
 629 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 630 {
 631
 632     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 633         return NULL;
 634
 635     if (!PyDict_Check(wxPython_dict)) {
 636         PyErr_SetString(PyExc_TypeError,
 637                         "_wxPySetDictionary must have dictionary object!");
 638         return NULL;
 639     }
 640
 641     if (! wxPyPtrTypeMap)
 642         wxPyPtrTypeMap = PyDict_New();
 643     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 644
 645     // Create an exception object to use for wxASSERTions
 646     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 647                                             PyExc_AssertionError, NULL);
 648     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 649
 650     // Create an exception object to use when the app object hasn't been created yet
 651     wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
 652                                         PyExc_RuntimeError, NULL);
 653     PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
 654
 655
 656
 657 #ifdef __WXMOTIF__
 658 #define wxPlatform "__WXMOTIF__"
 659 #define wxPlatName "wxMotif"
 660 #endif
 661 #ifdef __WXX11__
 662 #define wxPlatform "__WXX11__"
 663 #define wxPlatName "wxX11"
 664 #endif
 665 #ifdef __WXGTK__
 666 #define wxPlatform "__WXGTK__"
 667 #define wxPlatName "wxGTK"
 668 #endif
 669 #ifdef __WXMSW__
 670 #define wxPlatform "__WXMSW__"
 671 #define wxPlatName "wxMSW"
 672 #endif
 673 #ifdef __WXMAC__
 674 #define wxPlatform "__WXMAC__"
 675 #define wxPlatName "wxMac"
 676 #endif
 677
 678 #ifdef __WXDEBUG__
 679     int wxdebug = 1;
 680 #else
 681     int wxdebug = 0;
 682 #endif
 683
 684     // These should be deprecated in favor of the PlatformInfo tuple built below...
 685     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 686     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 687     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 688
 689     // Make a tuple of strings that gives more info about the platform.
 690     PyObject* PlatInfo = PyList_New(0);
 691     PyObject* obj;
 692
 693 #define _AddInfoString(st) \
 694     obj = PyString_FromString(st); \
 695     PyList_Append(PlatInfo, obj); \
 696     Py_DECREF(obj)
 697
 698     _AddInfoString(wxPlatform);
 699     _AddInfoString(wxPlatName);
 700 #if wxUSE_UNICODE
 701     _AddInfoString("unicode");
 702 #else
 703     _AddInfoString("ansi");
 704 #endif
 705 #ifdef __WXGTK__
 706 #ifdef __WXGTK20__
 707     _AddInfoString("gtk2");
 708 #else
 709     _AddInfoString("gtk1");
 710 #endif
 711 #endif
 712 #ifdef __WXDEBUG__
 713     _AddInfoString("wx-assertions-on");
 714 #else
 715     _AddInfoString("wx-assertions-off");
 716 #endif
 717     _AddInfoString(wxPy_SWIG_VERSION);
 718 #ifdef __WXMAC__
 719     #if wxMAC_USE_CORE_GRAPHICS
 720         _AddInfoString("mac-cg");
 721     #else
 722         _AddInfoString("mac-qd");
 723     #endif
 724     #if wxMAC_USE_NATIVE_TOOLBAR
 725         _AddInfoString("mac-native-tb");
 726     #else
 727         _AddInfoString("mac-no-native-tb");
 728     #endif
 729 #endif
 730
 731 #undef _AddInfoString
 732
 733     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 734     Py_DECREF(PlatInfo);
 735     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 736
 737     RETURN_NONE();
 738 }
 739
 740
 741
 742 //---------------------------------------------------------------------------
 743
 744 // Check for existence of a wxApp, setting an exception if there isn't one.
 745 // This doesn't need to aquire the GIL because it should only be called from
 746 // an %exception before the lock is released.
 747
 748 bool wxPyCheckForApp() {
 749     if (wxTheApp != NULL)
 750         return true;
 751     else {
 752         PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
 753         return false;
 754     }
 755 }
 756
 757 //---------------------------------------------------------------------------
 758
 759 void wxPyUserData_dtor(wxPyUserData* self) {
 760     if (! wxPyDoingCleanup) {
 761         wxPyBlock_t blocked = wxPyBeginBlockThreads();
 762         Py_DECREF(self->m_obj);
 763         self->m_obj = NULL;
 764         wxPyEndBlockThreads(blocked);
 765     }
 766 }
 767
 768
 769 void wxPyClientData_dtor(wxPyClientData* self) {
 770     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 771                                         // may have already garbage collected the object...
 772         if (self->m_incRef) {
 773             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 774             Py_DECREF(self->m_obj);
 775             wxPyEndBlockThreads(blocked);
 776         }
 777         self->m_obj = NULL;
 778     }
 779 }
 780
 781
 782
 783 // This is called when an OOR controled object is being destroyed.  Although
 784 // the C++ object is going away there is no way to force the Python object
 785 // (and all references to it) to die too.  This causes problems (crashes) in
 786 // wxPython when a python shadow object attempts to call a C++ method using
 787 // the now bogus pointer... So to try and prevent this we'll do a little black
 788 // magic and change the class of the python instance to a class that will
 789 // raise an exception for any attempt to call methods with it.  See
 790 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 791 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 792
 793     static PyObject* deadObjectClass = NULL;
 794
 795     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 796     if (deadObjectClass == NULL) {
 797         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 798         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 799         // will lead to a deadlock when it tries to aquire the GIL again.
 800         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 801         Py_INCREF(deadObjectClass);
 802     }
 803
 804
 805     // Only if there is more than one reference to the object and we are
 806     // holding the OOR reference:
 807     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
 808         // bool isInstance = wxPyInstance_Check(self->m_obj);
 809         // TODO same here
 810         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 811
 812         // Call __del__, if there is one.
 813         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 814         if (func) {
 815             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 816             Py_XDECREF(rv);
 817             Py_DECREF(func);
 818         }
 819         if (PyErr_Occurred())
 820             PyErr_Clear();      // just ignore it for now
 821
 822
 823         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 824         if (dict) {
 825             // Clear the instance's dictionary
 826             PyDict_Clear(dict);
 827
 828             // put the name of the old class into the instance, and then reset the
 829             // class to be the dead class.
 830             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 831             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 832             PyDict_SetItemString(dict, "_name", name);
 833             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 834             //Py_INCREF(deadObjectClass);
 835             Py_DECREF(klass);
 836             Py_DECREF(name);
 837         }
 838     }
 839
 840     // m_obj is DECREF'd in the base class dtor...
 841     wxPyEndBlockThreads(blocked);
 842 }
 843
 844
 845 //---------------------------------------------------------------------------
 846 // Stuff used by OOR to find the right wxPython class type to return and to
 847 // build it.
 848
 849
 850 // The pointer type map is used when the "pointer" type name generated by SWIG
 851 // is not the same as the shadow class name, for example wxPyTreeCtrl
 852 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 853 // so we'll just make it a Python dictionary in the wx module's namespace.
 854 // (See __wxSetDictionary)
 855 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 856     if (! wxPyPtrTypeMap)
 857         wxPyPtrTypeMap = PyDict_New();
 858     PyDict_SetItemString(wxPyPtrTypeMap,
 859                          (char*)commonName,
 860                          PyString_FromString((char*)ptrName));
 861 }
 862
 863
 864
 865
 866 PyObject*  wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
 867     PyObject* target = NULL;
 868     bool      isEvtHandler = false;
 869     bool      isSizer = false;
 870
 871     if (source) {
 872         // If it's derived from wxEvtHandler then there may
 873         // already be a pointer to a Python object that we can use
 874         // in the OOR data.
 875         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 876             isEvtHandler = true;
 877             wxEvtHandler* eh = (wxEvtHandler*)source;
 878             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 879             if (data) {
 880                 target = data->m_obj;
 881                 if (target)
 882                     Py_INCREF(target);
 883             }
 884         }
 885
 886         // Also check for wxSizer
 887         if (!target && wxIsKindOf(source, wxSizer)) {
 888             isSizer = true;
 889             wxSizer* sz = (wxSizer*)source;
 890             wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
 891             if (data) {
 892                 target = data->m_obj;
 893                 if (target)
 894                     Py_INCREF(target);
 895             }
 896         }
 897
 898         if (! target) {
 899             // Otherwise make it the old fashioned way by making a new shadow
 900             // object and putting this pointer in it.  Look up the class
 901             // heirarchy until we find a class name that is located in the
 902             // python module.
 903             const wxClassInfo* info   = source->GetClassInfo();
 904             wxString           name   = info->GetClassName();
 905             bool               exists = wxPyCheckSwigType(name);
 906             while (info && !exists) {
 907                 info = info->GetBaseClass1();
 908                 name = info->GetClassName();
 909                 exists = wxPyCheckSwigType(name);
 910             }
 911             if (info) {
 912                 target = wxPyConstructObject((void*)source, name, setThisOwn);
 913                 if (target && isEvtHandler)
 914                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
 915                 if (target && isSizer)
 916                     ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
 917             } else {
 918                 wxString msg(wxT("wxPython class not found for "));
 919                 msg += source->GetClassInfo()->GetClassName();
 920                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
 921                 target = NULL;
 922             }
 923         }
 924     } else {  // source was NULL so return None.
 925         Py_INCREF(Py_None); target = Py_None;
 926     }
 927     return target;
 928 }
 929
 930
 931 PyObject*  wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
 932
 933     return wxPyMake_wxObject(source, setThisOwn);
 934 }
 935
 936
 937 //---------------------------------------------------------------------------
 938
 939
 940 #ifdef WXP_WITH_THREAD
 941 #if !wxPyUSE_GIL_STATE
 942
 943 inline
 944 unsigned long wxPyGetCurrentThreadId() {
 945     return wxThread::GetCurrentId();
 946 }
 947
 948 static wxPyThreadState gs_shutdownTState;
 949
 950 static
 951 wxPyThreadState* wxPyGetThreadState() {
 952     if (wxPyTMutex == NULL) // Python is shutting down...
 953         return &gs_shutdownTState;
 954
 955     unsigned long ctid = wxPyGetCurrentThreadId();
 956     wxPyThreadState* tstate = NULL;
 957
 958     wxPyTMutex->Lock();
 959     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 960         wxPyThreadState& info = wxPyTStates->Item(i);
 961         if (info.tid == ctid) {
 962             tstate = &info;
 963             break;
 964         }
 965     }
 966     wxPyTMutex->Unlock();
 967     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
 968     return tstate;
 969 }
 970
 971
 972 static
 973 void wxPySaveThreadState(PyThreadState* tstate) {
 974     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
 975         gs_shutdownTState.tstate = tstate;
 976         return;
 977     }
 978     unsigned long ctid = wxPyGetCurrentThreadId();
 979     wxPyTMutex->Lock();
 980     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 981         wxPyThreadState& info = wxPyTStates->Item(i);
 982         if (info.tid == ctid) {
 983 #if 0
 984             if (info.tstate != tstate)
 985                 wxLogMessage("*** tstate mismatch!???");
 986 #endif
 987             info.tstate = tstate;    // allow for transient tstates
 988             // Normally it will never change, but apparently COM callbacks
 989             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
 990             // tstate which will then be garbage the next time we try to use
 991             // it...
 992
 993             wxPyTMutex->Unlock();
 994             return;
 995         }
 996     }
 997     // not found, so add it...
 998     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
 999     wxPyTMutex->Unlock();
1000 }
1001
1002 #endif
1003 #endif
1004
1005
1006
1007 // Calls from Python to wxWindows code are wrapped in calls to these
1008 // functions:
1009
1010 PyThreadState* wxPyBeginAllowThreads() {
1011 #ifdef WXP_WITH_THREAD
1012     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1013 #if !wxPyUSE_GIL_STATE
1014     wxPySaveThreadState(saved);
1015 #endif
1016     return saved;
1017 #else
1018     return NULL;
1019 #endif
1020 }
1021
1022 void wxPyEndAllowThreads(PyThreadState* saved) {
1023 #ifdef WXP_WITH_THREAD
1024     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1025 #endif
1026 }
1027
1028
1029
1030 // Calls from wxWindows back to Python code, or even any PyObject
1031 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1032
1033 wxPyBlock_t wxPyBeginBlockThreads() {
1034 #ifdef WXP_WITH_THREAD
1035     if (! Py_IsInitialized()) {
1036         return (wxPyBlock_t)0;
1037     }
1038 #if wxPyUSE_GIL_STATE
1039     PyGILState_STATE state = PyGILState_Ensure();
1040     return state;
1041 #else
1042     PyThreadState *current = _PyThreadState_Current;
1043
1044     // Only block if there wasn't already a tstate, or if the current one is
1045     // not the one we are wanting to change to.  This should prevent deadlock
1046     // if there are nested calls to wxPyBeginBlockThreads
1047     wxPyBlock_t blocked = false;
1048     wxPyThreadState* tstate = wxPyGetThreadState();
1049     if (current != tstate->tstate) {
1050         PyEval_RestoreThread(tstate->tstate);
1051         blocked = true;
1052     }
1053     return blocked;
1054 #endif
1055 #else
1056     return (wxPyBlock_t)0;
1057 #endif
1058 }
1059
1060
1061 void wxPyEndBlockThreads(wxPyBlock_t blocked) {
1062 #ifdef WXP_WITH_THREAD
1063     if (! Py_IsInitialized()) {
1064         return;
1065     }
1066 #if wxPyUSE_GIL_STATE
1067     PyGILState_Release(blocked);
1068 #else
1069     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1070     // The value of blocked passed in needs to be the same as that returned
1071     // from wxPyBeginBlockThreads at the same nesting level.
1072     if ( blocked ) {
1073         PyEval_SaveThread();
1074     }
1075 #endif
1076 #endif
1077 }
1078
1079
1080 //---------------------------------------------------------------------------
1081 // wxPyInputStream and wxPyCBInputStream methods
1082
1083
1084 void wxPyInputStream::close() {
1085     /* do nothing for now */
1086 }
1087
1088 void wxPyInputStream::flush() {
1089     /* do nothing for now */
1090 }
1091
1092 bool wxPyInputStream::eof() {
1093     if (m_wxis)
1094         return m_wxis->Eof();
1095     else
1096         return true;
1097 }
1098
1099 wxPyInputStream::~wxPyInputStream() {
1100     if (m_wxis)
1101         delete m_wxis;
1102 }
1103
1104
1105
1106
1107 PyObject* wxPyInputStream::read(int size) {
1108     PyObject* obj = NULL;
1109     wxMemoryBuffer buf;
1110     const int BUFSIZE = 1024;
1111
1112     // check if we have a real wxInputStream to work with
1113     if (!m_wxis) {
1114         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1115         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1116         wxPyEndBlockThreads(blocked);
1117         return NULL;
1118     }
1119
1120     if (size < 0) {
1121         // read while bytes are available on the stream
1122         while ( m_wxis->CanRead() ) {
1123             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1124             buf.UngetAppendBuf(m_wxis->LastRead());
1125         }
1126
1127     } else {  // Read only size number of characters
1128         m_wxis->Read(buf.GetWriteBuf(size), size);
1129         buf.UngetWriteBuf(m_wxis->LastRead());
1130     }
1131
1132     // error check
1133     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1134     wxStreamError err = m_wxis->GetLastError();
1135     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1136         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1137     }
1138     else {
1139         // We use only strings for the streams, not unicode
1140         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1141     }
1142     wxPyEndBlockThreads(blocked);
1143     return obj;
1144 }
1145
1146
1147 PyObject* wxPyInputStream::readline(int size) {
1148     PyObject* obj = NULL;
1149     wxMemoryBuffer buf;
1150     int i;
1151     char ch;
1152
1153     // check if we have a real wxInputStream to work with
1154     if (!m_wxis) {
1155         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1156         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1157         wxPyEndBlockThreads(blocked);
1158         return NULL;
1159     }
1160
1161     // read until \n or byte limit reached
1162     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1163         ch = m_wxis->GetC();
1164         buf.AppendByte(ch);
1165     }
1166
1167     // errorcheck
1168     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1169     wxStreamError err = m_wxis->GetLastError();
1170     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1171         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1172     }
1173     else {
1174         // We use only strings for the streams, not unicode
1175         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1176     }
1177     wxPyEndBlockThreads(blocked);
1178     return obj;
1179 }
1180
1181
1182 PyObject* wxPyInputStream::readlines(int sizehint) {
1183     PyObject* pylist;
1184
1185     // check if we have a real wxInputStream to work with
1186     if (!m_wxis) {
1187         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1188         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1189         wxPyEndBlockThreads(blocked);
1190         return NULL;
1191     }
1192
1193     // init list
1194     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1195     pylist = PyList_New(0);
1196     wxPyEndBlockThreads(blocked);
1197
1198     if (!pylist) {
1199         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1200         PyErr_NoMemory();
1201         wxPyEndBlockThreads(blocked);
1202         return NULL;
1203     }
1204
1205     // read sizehint bytes or until EOF
1206     int i;
1207     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1208         PyObject* s = this->readline();
1209         if (s == NULL) {
1210             wxPyBlock_t blocked = wxPyBeginBlockThreads();
1211             Py_DECREF(pylist);
1212             wxPyEndBlockThreads(blocked);
1213             return NULL;
1214         }
1215         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1216         PyList_Append(pylist, s);
1217         i += PyString_Size(s);
1218         wxPyEndBlockThreads(blocked);
1219     }
1220
1221     // error check
1222     wxStreamError err = m_wxis->GetLastError();
1223     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1224         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1225         Py_DECREF(pylist);
1226         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1227         wxPyEndBlockThreads(blocked);
1228         return NULL;
1229     }
1230
1231     return pylist;
1232 }
1233
1234
1235 void wxPyInputStream::seek(int offset, int whence) {
1236     if (m_wxis)
1237         m_wxis->SeekI(offset, wxSeekMode(whence));
1238 }
1239
1240 int wxPyInputStream::tell(){
1241     if (m_wxis)
1242         return m_wxis->TellI();
1243     else return 0;
1244 }
1245
1246
1247
1248
1249 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1250     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1251 {}
1252
1253 wxPyCBInputStream::wxPyCBInputStream(const wxPyCBInputStream& other)
1254 {
1255     m_read  = other.m_read;
1256     m_seek  = other.m_seek;
1257     m_tell  = other.m_tell;
1258     m_block = other.m_block;
1259     Py_INCREF(m_read);
1260     Py_INCREF(m_seek);
1261     Py_INCREF(m_tell);
1262 }
1263
1264
1265 wxPyCBInputStream::~wxPyCBInputStream() {
1266     wxPyBlock_t blocked;
1267     if (m_block) blocked = wxPyBeginBlockThreads();
1268     Py_XDECREF(m_read);
1269     Py_XDECREF(m_seek);
1270     Py_XDECREF(m_tell);
1271     if (m_block) wxPyEndBlockThreads(blocked);
1272 }
1273
1274
1275 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1276     wxPyBlock_t blocked;
1277     if (block) blocked = wxPyBeginBlockThreads();
1278
1279     PyObject* read = getMethod(py, "read");
1280     PyObject* seek = getMethod(py, "seek");
1281     PyObject* tell = getMethod(py, "tell");
1282
1283     if (!read) {
1284         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1285         Py_XDECREF(read);
1286         Py_XDECREF(seek);
1287         Py_XDECREF(tell);
1288         if (block) wxPyEndBlockThreads(blocked);
1289         return NULL;
1290     }
1291
1292     if (block) wxPyEndBlockThreads(blocked);
1293     return new wxPyCBInputStream(read, seek, tell, block);
1294 }
1295
1296
1297 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1298     return wxPyCBInputStream::create(py, block);
1299 }
1300
1301 wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other) {
1302     return new wxPyCBInputStream(*other);
1303 }
1304
1305 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1306     if (!PyObject_HasAttrString(py, name))
1307         return NULL;
1308     PyObject* o = PyObject_GetAttrString(py, name);
1309     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1310         Py_DECREF(o);
1311         return NULL;
1312     }
1313     return o;
1314 }
1315
1316
1317 wxFileOffset wxPyCBInputStream::GetLength() const {
1318     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1319     if (m_seek && m_tell) {
1320         wxFileOffset temp = self->OnSysTell();
1321         wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
1322         self->OnSysSeek(temp, wxFromStart);
1323         return ret;
1324     }
1325     else
1326         return wxInvalidOffset;
1327 }
1328
1329
1330 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1331     if (bufsize == 0)
1332         return 0;
1333
1334     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1335     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1336     PyObject* result = PyEval_CallObject(m_read, arglist);
1337     Py_DECREF(arglist);
1338
1339     size_t o = 0;
1340     if ((result != NULL) && PyString_Check(result)) {
1341         o = PyString_Size(result);
1342         if (o == 0)
1343             m_lasterror = wxSTREAM_EOF;
1344         if (o > bufsize)
1345             o = bufsize;
1346         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1347         Py_DECREF(result);
1348
1349     }
1350     else
1351         m_lasterror = wxSTREAM_READ_ERROR;
1352     wxPyEndBlockThreads(blocked);
1353     return o;
1354 }
1355
1356 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1357     m_lasterror = wxSTREAM_WRITE_ERROR;
1358     return 0;
1359 }
1360
1361
1362 wxFileOffset wxPyCBInputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
1363     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1364     PyObject* arglist = PyTuple_New(2);
1365
1366     if (sizeof(wxFileOffset) > sizeof(long))
1367         // wxFileOffset is a 64-bit value...
1368         PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
1369     else
1370         PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
1371
1372     PyTuple_SET_ITEM(arglist, 1, PyInt_FromLong(mode));
1373
1374
1375     PyObject* result = PyEval_CallObject(m_seek, arglist);
1376     Py_DECREF(arglist);
1377     Py_XDECREF(result);
1378     wxPyEndBlockThreads(blocked);
1379     return OnSysTell();
1380 }
1381
1382
1383 wxFileOffset wxPyCBInputStream::OnSysTell() const {
1384     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1385     PyObject* arglist = Py_BuildValue("()");
1386     PyObject* result = PyEval_CallObject(m_tell, arglist);
1387     Py_DECREF(arglist);
1388     wxFileOffset o = 0;
1389     if (result != NULL) {
1390         if (PyLong_Check(result))
1391             o = PyLong_AsLongLong(result);
1392         else
1393             o = PyInt_AsLong(result);
1394         Py_DECREF(result);
1395     };
1396     wxPyEndBlockThreads(blocked);
1397     return o;
1398 }
1399
1400 //----------------------------------------------------------------------
1401
1402 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1403
1404 wxPyCallback::wxPyCallback(PyObject* func) {
1405     m_func = func;
1406     Py_INCREF(m_func);
1407 }
1408
1409 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1410     m_func = other.m_func;
1411     Py_INCREF(m_func);
1412 }
1413
1414 wxPyCallback::~wxPyCallback() {
1415     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1416     Py_DECREF(m_func);
1417     wxPyEndBlockThreads(blocked);
1418 }
1419
1420
1421 #define wxPy_PRECALLINIT     "_preCallInit"
1422 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1423
1424 // This function is used for all events destined for Python event handlers.
1425 void wxPyCallback::EventThunker(wxEvent& event) {
1426     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1427     PyObject*       func = cb->m_func;
1428     PyObject*       result;
1429     PyObject*       arg;
1430     PyObject*       tuple;
1431     bool            checkSkip = false;
1432
1433     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1434     wxString className = event.GetClassInfo()->GetClassName();
1435
1436     // If the event is one of these types then pass the original
1437     // event object instead of the one passed to us.
1438     if ( className == wxT("wxPyEvent") ) {
1439         arg =       ((wxPyEvent*)&event)->GetSelf();
1440         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1441     }
1442     else if ( className == wxT("wxPyCommandEvent") ) {
1443         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1444         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1445     }
1446     else {
1447         arg = wxPyConstructObject((void*)&event, className);
1448     }
1449
1450     if (!arg) {
1451         PyErr_Print();
1452     } else {
1453         // "intern" the pre/post method names to speed up the HasAttr
1454         static PyObject* s_preName  = NULL;
1455         static PyObject* s_postName = NULL;
1456         if (s_preName == NULL) {
1457             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1458             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1459         }
1460
1461         // Check if the event object needs some preinitialization
1462         if (PyObject_HasAttr(arg, s_preName)) {
1463             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1464             if ( result ) {
1465                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1466                 PyErr_Clear();       // Just in case...
1467             } else {
1468                 PyErr_Print();
1469             }
1470         }
1471
1472         // Call the event handler, passing the event object
1473         tuple = PyTuple_New(1);
1474         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1475         result = PyEval_CallObject(func, tuple);
1476         if ( result ) {
1477             Py_DECREF(result);   // result is ignored, but we still need to decref it
1478             PyErr_Clear();       // Just in case...
1479         } else {
1480             PyErr_Print();
1481         }
1482
1483         // Check if the event object needs some post cleanup
1484         if (PyObject_HasAttr(arg, s_postName)) {
1485             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1486             if ( result ) {
1487                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1488                 PyErr_Clear();       // Just in case...
1489             } else {
1490                 PyErr_Print();
1491             }
1492         }
1493
1494         if ( checkSkip ) {
1495             // if the event object was one of our special types and
1496             // it had been cloned, then we need to extract the Skipped
1497             // value from the original and set it in the clone.
1498             result = PyObject_CallMethod(arg, "GetSkipped", "");
1499             if ( result ) {
1500                 event.Skip(PyInt_AsLong(result));
1501                 Py_DECREF(result);
1502             } else {
1503                 PyErr_Print();
1504             }
1505         }
1506         Py_DECREF(tuple);
1507     }
1508     wxPyEndBlockThreads(blocked);
1509 }
1510
1511
1512 //----------------------------------------------------------------------
1513
1514 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1515       m_lastFound = NULL;
1516       m_self = other.m_self;
1517       m_class = other.m_class;
1518       if (m_self) {
1519           Py_INCREF(m_self);
1520           Py_INCREF(m_class);
1521       }
1522 }
1523
1524
1525 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1526     m_self = self;
1527     m_class = klass;
1528     m_incRef = incref;
1529     if (incref) {
1530         Py_INCREF(m_self);
1531         Py_INCREF(m_class);
1532     }
1533 }
1534
1535
1536 #if PYTHON_API_VERSION >= 1011
1537
1538 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1539 // in which the method was defined.  Starting with 2.2 it returns
1540 // "class that asked for the method" which seems totally bogus to me
1541 // but apprently it fixes some obscure problem waiting to happen in
1542 // Python.  Since the API was not documented Guido and the gang felt
1543 // safe in changing it.  Needless to say that totally screwed up the
1544 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1545 // code to find the class where the method is actually defined...
1546
1547 static
1548 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1549 {
1550     int i, n;
1551
1552     if (PyType_Check(klass)) {      // new style classes
1553         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1554         PyTypeObject* type = (PyTypeObject*)klass;
1555         PyObject *mro, *res, *base, *dict;
1556         /* Look in tp_dict of types in MRO */
1557         mro = type->tp_mro;
1558         assert(PyTuple_Check(mro));
1559         n = PyTuple_GET_SIZE(mro);
1560         for (i = 0; i < n; i++) {
1561             base = PyTuple_GET_ITEM(mro, i);
1562             if (PyClass_Check(base))
1563                 dict = ((PyClassObject *)base)->cl_dict;
1564             else {
1565                 assert(PyType_Check(base));
1566                 dict = ((PyTypeObject *)base)->tp_dict;
1567             }
1568             assert(dict && PyDict_Check(dict));
1569             res = PyDict_GetItem(dict, name);
1570             if (res != NULL)
1571                 return base;
1572         }
1573         return NULL;
1574     }
1575
1576     else if (PyClass_Check(klass)) { // old style classes
1577         // This code is borrowed/adapted from class_lookup in classobject.c
1578         PyClassObject* cp = (PyClassObject*)klass;
1579         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1580         if (value != NULL) {
1581             return (PyObject*)cp;
1582         }
1583         n = PyTuple_Size(cp->cl_bases);
1584         for (i = 0; i < n; i++) {
1585             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1586             PyObject *v = PyFindClassWithAttr(base, name);
1587             if (v != NULL)
1588                 return v;
1589         }
1590         return NULL;
1591     }
1592     return NULL;
1593 }
1594 #endif
1595
1596
1597 static
1598 PyObject* PyMethod_GetDefiningClass(PyObject* method, PyObject* nameo)
1599 {
1600     PyObject* mgc = PyMethod_GET_CLASS(method);
1601
1602 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1603     return mgc;
1604 #else                             // 2.2 and after, the hard way...
1605     return PyFindClassWithAttr(mgc, nameo);
1606 #endif
1607 }
1608
1609
1610
1611 // To avoid recursion when an overridden virtual method wants to call the base
1612 // class version, temporarily set an attribute in the instance with the same
1613 // name as the method.  Then the PyObject_GetAttr in the next findCallback
1614 // will return this attribute and the PyMethod_Check will fail.
1615
1616 void wxPyCallbackHelper::setRecursionGuard(PyObject* method) const
1617 {
1618     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1619     PyObject_SetAttr(m_self, func->func_name, Py_None);
1620 }
1621
1622 void wxPyCallbackHelper::clearRecursionGuard(PyObject* method) const
1623 {
1624     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1625     if (PyObject_HasAttr(m_self, func->func_name)) {
1626         PyObject_DelAttr(m_self, func->func_name);
1627     }
1628 }
1629
1630 // bool wxPyCallbackHelper::hasRecursionGuard(PyObject* method) const
1631 // {
1632 //     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1633 //     if (PyObject_HasAttr(m_self, func->func_name)) {
1634 //         PyObject* attr = PyObject_GetAttr(m_self, func->func_name);
1635 //         bool retval = (attr == Py_None);
1636 //         Py_DECREF(attr);
1637 //         return retval;
1638 //     }
1639 //     return false;
1640 // }
1641
1642
1643 bool wxPyCallbackHelper::findCallback(const char* name, bool setGuard) const {
1644     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1645     PyObject *method, *klass;
1646     PyObject* nameo = PyString_FromString(name);
1647     self->m_lastFound = NULL;
1648
1649     // If the object (m_self) has an attibute of the given name...
1650     if (m_self && PyObject_HasAttr(m_self, nameo)) {
1651         method = PyObject_GetAttr(m_self, nameo);
1652
1653         // ...and if that attribute is a method, and if that method's class is
1654         // not from the registered class or a base class...
1655         if (PyMethod_Check(method) &&
1656             (klass = PyMethod_GetDefiningClass(method, nameo)) != NULL &&
1657             (klass != m_class) &&
1658             PyObject_IsSubclass(klass, m_class)) {
1659
1660             // ...then we'll save a pointer to the method so callCallback can
1661             // call it.  But first, set a recursion guard in case the
1662             // overridden method wants to call the base class version.
1663             if (setGuard)
1664                 setRecursionGuard(method);
1665             self->m_lastFound = method;
1666         }
1667         else {
1668             Py_DECREF(method);
1669         }
1670     }
1671
1672     Py_DECREF(nameo);
1673     return m_lastFound != NULL;
1674 }
1675
1676
1677 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1678     PyObject*   result;
1679     int         retval = false;
1680
1681     result = callCallbackObj(argTuple);
1682     if (result) {                       // Assumes an integer return type...
1683         retval = PyInt_AsLong(result);
1684         Py_DECREF(result);
1685         PyErr_Clear();                  // forget about it if it's not...
1686     }
1687     return retval;
1688 }
1689
1690 // Invoke the Python callable object, returning the raw PyObject return
1691 // value.  Caller should DECREF the return value and also manage the GIL.
1692 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1693     PyObject* result;
1694
1695     // Save a copy of the pointer in case the callback generates another
1696     // callback.  In that case m_lastFound will have a different value when
1697     // it gets back here...
1698     PyObject* method = m_lastFound;
1699
1700     result = PyEval_CallObject(method, argTuple);
1701     clearRecursionGuard(method);
1702
1703     Py_DECREF(argTuple);
1704     Py_DECREF(method);
1705     if (!result) {
1706         PyErr_Print();
1707     }
1708     return result;
1709 }
1710
1711
1712 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1713     cbh.setSelf(self, klass, incref);
1714 }
1715
1716 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name, bool setGuard) {
1717     return cbh.findCallback(name, setGuard);
1718 }
1719
1720 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1721     return cbh.callCallback(argTuple);
1722 }
1723
1724 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1725     return cbh.callCallbackObj(argTuple);
1726 }
1727
1728
1729 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1730     if (cbh->m_incRef) {
1731         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1732         Py_XDECREF(cbh->m_self);
1733         Py_XDECREF(cbh->m_class);
1734         wxPyEndBlockThreads(blocked);
1735     }
1736 }
1737
1738 //---------------------------------------------------------------------------
1739 //---------------------------------------------------------------------------
1740 // These event classes can be derived from in Python and passed through the event
1741 // system without losing anything.  They do this by keeping a reference to
1742 // themselves and some special case handling in wxPyCallback::EventThunker.
1743
1744
1745 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1746     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1747     //Py_INCREF(m_self);        //      circular loops...
1748     m_cloned = false;
1749 }
1750
1751 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1752     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1753     if (m_cloned)
1754         Py_DECREF(m_self);
1755     wxPyEndBlockThreads(blocked);
1756 }
1757
1758 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1759     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1760     if (m_cloned)
1761         Py_DECREF(m_self);
1762     m_self = self;
1763     if (clone) {
1764         Py_INCREF(m_self);
1765         m_cloned = true;
1766     }
1767     wxPyEndBlockThreads(blocked);
1768 }
1769
1770 PyObject* wxPyEvtSelfRef::GetSelf() const {
1771     Py_INCREF(m_self);
1772     return m_self;
1773 }
1774
1775
1776 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1777 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1778
1779
1780 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1781     : wxEvent(winid, commandType) {
1782 }
1783
1784
1785 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1786     : wxEvent(evt)
1787 {
1788     SetSelf(evt.m_self, true);
1789 }
1790
1791
1792 wxPyEvent::~wxPyEvent() {
1793 }
1794
1795
1796 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1797     : wxCommandEvent(commandType, id) {
1798 }
1799
1800
1801 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1802     : wxCommandEvent(evt)
1803 {
1804     SetSelf(evt.m_self, true);
1805 }
1806
1807
1808 wxPyCommandEvent::~wxPyCommandEvent() {
1809 }
1810
1811
1812
1813
1814
1815 //---------------------------------------------------------------------------
1816 //---------------------------------------------------------------------------
1817 // Convert a wxList to a Python List, only works for lists of wxObjects
1818
1819 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1820     wxList*     list = (wxList*)listbase;  // this is probably bad...
1821     PyObject*   pyList;
1822     PyObject*   pyObj;
1823     wxObject*   wxObj;
1824     wxNode*     node = list->GetFirst();
1825
1826     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1827     pyList = PyList_New(0);
1828     while (node) {
1829         wxObj = node->GetData();
1830         pyObj = wxPyMake_wxObject(wxObj,false);
1831         PyList_Append(pyList, pyObj);
1832         node = node->GetNext();
1833     }
1834     wxPyEndBlockThreads(blocked);
1835     return pyList;
1836 }
1837
1838 //----------------------------------------------------------------------
1839
1840 long wxPyGetWinHandle(wxWindow* win) {
1841
1842 #ifdef __WXMSW__
1843     return (long)win->GetHandle();
1844 #endif
1845
1846 #if defined(__WXGTK__) || defined(__WXX11)
1847     return (long)GetXWindow(win);
1848 #endif
1849
1850 #ifdef __WXMAC__
1851     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
1852     return (long)win->GetHandle();
1853 #endif
1854
1855     return 0;
1856 }
1857
1858 //----------------------------------------------------------------------
1859 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1860 // included in every file over and over again...
1861
1862 wxString* wxString_in_helper(PyObject* source) {
1863     wxString* target = NULL;
1864
1865     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1866         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
1867         return NULL;
1868     }
1869 #if wxUSE_UNICODE
1870     PyObject* uni = source;
1871     if (PyString_Check(source)) {
1872         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1873         if (PyErr_Occurred()) return NULL;
1874     }
1875     target = new wxString();
1876     size_t len = PyUnicode_GET_SIZE(uni);
1877     if (len) {
1878         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target->GetWriteBuf(len), len);
1879         target->UngetWriteBuf(len);
1880     }
1881
1882     if (PyString_Check(source))
1883         Py_DECREF(uni);
1884 #else
1885     // Convert to a string object if it isn't already, then to wxString
1886     PyObject* str = source;
1887     if (PyUnicode_Check(source)) {
1888         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1889         if (PyErr_Occurred()) return NULL;
1890     }
1891     else if (!PyString_Check(source)) {
1892         str = PyObject_Str(source);
1893         if (PyErr_Occurred()) return NULL;
1894     }
1895     char* tmpPtr; Py_ssize_t tmpSize;
1896     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1897     target = new wxString(tmpPtr, tmpSize);
1898
1899     if (!PyString_Check(source))
1900         Py_DECREF(str);
1901 #endif // wxUSE_UNICODE
1902
1903     return target;
1904 }
1905
1906
1907 // Similar to above except doesn't use "new" and doesn't set an exception
1908 wxString Py2wxString(PyObject* source)
1909 {
1910     wxString target;
1911
1912 #if wxUSE_UNICODE
1913     // Convert to a unicode object, if not already, then to a wxString
1914     PyObject* uni = source;
1915     if (!PyUnicode_Check(source)) {
1916         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1917         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
1918     }
1919     size_t len = PyUnicode_GET_SIZE(uni);
1920     if (len) {
1921         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target.GetWriteBuf(len), len);
1922         target.UngetWriteBuf();
1923     }
1924
1925     if (!PyUnicode_Check(source))
1926         Py_DECREF(uni);
1927 #else
1928     // Convert to a string object if it isn't already, then to wxString
1929     PyObject* str = source;
1930     if (PyUnicode_Check(source)) {
1931         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1932         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1933     }
1934     else if (!PyString_Check(source)) {
1935         str = PyObject_Str(source);
1936         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1937     }
1938     char* tmpPtr; Py_ssize_t tmpSize;
1939     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1940     target = wxString(tmpPtr, tmpSize);
1941
1942     if (!PyString_Check(source))
1943         Py_DECREF(str);
1944 #endif // wxUSE_UNICODE
1945
1946     return target;
1947 }
1948
1949
1950 // Make either a Python String or Unicode object, depending on build mode
1951 PyObject* wx2PyString(const wxString& src)
1952 {
1953     PyObject* str;
1954 #if wxUSE_UNICODE
1955     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
1956 #else
1957     str = PyString_FromStringAndSize(src.c_str(), src.Len());
1958 #endif
1959     return str;
1960 }
1961
1962
1963
1964 void wxSetDefaultPyEncoding(const char* encoding)
1965 {
1966     strncpy(wxPyDefaultEncoding, encoding, DEFAULTENCODING_SIZE);
1967 }
1968
1969 const char* wxGetDefaultPyEncoding()
1970 {
1971     return wxPyDefaultEncoding;
1972 }
1973
1974 //----------------------------------------------------------------------
1975
1976
1977 byte* byte_LIST_helper(PyObject* source) {
1978     if (!PyList_Check(source)) {
1979         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1980         return NULL;
1981     }
1982     int count = PyList_Size(source);
1983     byte* temp = new byte[count];
1984     if (! temp) {
1985         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1986         return NULL;
1987     }
1988     for (int x=0; x<count; x++) {
1989         PyObject* o = PyList_GetItem(source, x);
1990         if (! PyInt_Check(o)) {
1991             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1992             return NULL;
1993         }
1994         temp[x] = (byte)PyInt_AsLong(o);
1995     }
1996     return temp;
1997 }
1998
1999
2000 int* int_LIST_helper(PyObject* source) {
2001     if (!PyList_Check(source)) {
2002         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2003         return NULL;
2004     }
2005     int count = PyList_Size(source);
2006     int* temp = new int[count];
2007     if (! temp) {
2008         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2009         return NULL;
2010     }
2011     for (int x=0; x<count; x++) {
2012         PyObject* o = PyList_GetItem(source, x);
2013         if (! PyInt_Check(o)) {
2014             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2015             return NULL;
2016         }
2017         temp[x] = PyInt_AsLong(o);
2018     }
2019     return temp;
2020 }
2021
2022
2023 long* long_LIST_helper(PyObject* source) {
2024     if (!PyList_Check(source)) {
2025         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2026         return NULL;
2027     }
2028     int count = PyList_Size(source);
2029     long* temp = new long[count];
2030     if (! temp) {
2031         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2032         return NULL;
2033     }
2034     for (int x=0; x<count; x++) {
2035         PyObject* o = PyList_GetItem(source, x);
2036         if (! PyInt_Check(o)) {
2037             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2038             return NULL;
2039         }
2040         temp[x] = PyInt_AsLong(o);
2041     }
2042     return temp;
2043 }
2044
2045
2046 char** string_LIST_helper(PyObject* source) {
2047     if (!PyList_Check(source)) {
2048         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2049         return NULL;
2050     }
2051     int count = PyList_Size(source);
2052     char** temp = new char*[count];
2053     if (! temp) {
2054         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2055         return NULL;
2056     }
2057     for (int x=0; x<count; x++) {
2058         PyObject* o = PyList_GetItem(source, x);
2059         if (! PyString_Check(o)) {
2060             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2061             return NULL;
2062         }
2063         temp[x] = PyString_AsString(o);
2064     }
2065     return temp;
2066 }
2067
2068 //--------------------------------
2069 // Part of patch from Tim Hochberg
2070 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
2071     if (PyInt_Check(o1) && PyInt_Check(o2)) {
2072         point->x = PyInt_AS_LONG(o1);
2073         point->y = PyInt_AS_LONG(o2);
2074         return true;
2075     }
2076     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
2077         point->x = (int)PyFloat_AS_DOUBLE(o1);
2078         point->y = (int)PyFloat_AS_DOUBLE(o2);
2079         return true;
2080     }
2081     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {  // TODO: Why???
2082         // Disallow instances because they can cause havok
2083         return false;
2084     }
2085     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
2086         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
2087         point->x = PyInt_AsLong(o1);
2088         point->y = PyInt_AsLong(o2);
2089         return true;
2090     }
2091     return false;
2092 }
2093
2094
2095 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
2096     // Putting all of the declarations here allows
2097     // us to put the error handling all in one place.
2098     int x;
2099     wxPoint* temp;
2100     PyObject *o, *o1, *o2;
2101     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2102
2103     if (!PySequence_Check(source)) {
2104         goto error0;
2105     }
2106
2107     // The length of the sequence is returned in count.
2108     *count = PySequence_Length(source);
2109     if (*count < 0) {
2110         goto error0;
2111     }
2112
2113     temp = new wxPoint[*count];
2114     if (!temp) {
2115         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2116         return NULL;
2117     }
2118     for (x=0; x<*count; x++) {
2119         // Get an item: try fast way first.
2120         if (isFast) {
2121             o = PySequence_Fast_GET_ITEM(source, x);
2122         }
2123         else {
2124             o = PySequence_GetItem(source, x);
2125             if (o == NULL) {
2126                 goto error1;
2127             }
2128         }
2129
2130         // Convert o to wxPoint.
2131         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2132             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2133             o1 = PySequence_Fast_GET_ITEM(o, 0);
2134             o2 = PySequence_Fast_GET_ITEM(o, 1);
2135             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2136                 goto error2;
2137             }
2138         }
2139         else if (wxPySwigInstance_Check(o)) {
2140             wxPoint* pt;
2141             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2142                 goto error2;
2143             }
2144             temp[x] = *pt;
2145         }
2146         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2147             o1 = PySequence_GetItem(o, 0);
2148             o2 = PySequence_GetItem(o, 1);
2149             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2150                 goto error3;
2151             }
2152             Py_DECREF(o1);
2153             Py_DECREF(o2);
2154         }
2155         else {
2156             goto error2;
2157         }
2158         // Clean up.
2159         if (!isFast)
2160             Py_DECREF(o);
2161     }
2162     return temp;
2163
2164 error3:
2165     Py_DECREF(o1);
2166     Py_DECREF(o2);
2167 error2:
2168     if (!isFast)
2169         Py_DECREF(o);
2170 error1:
2171     delete [] temp;
2172 error0:
2173     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2174     return NULL;
2175 }
2176 // end of patch
2177 //------------------------------
2178
2179
2180 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2181     if (!PyList_Check(source)) {
2182         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2183         return NULL;
2184     }
2185     int count = PyList_Size(source);
2186     wxBitmap** temp = new wxBitmap*[count];
2187     if (! temp) {
2188         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2189         return NULL;
2190     }
2191     for (int x=0; x<count; x++) {
2192         PyObject* o = PyList_GetItem(source, x);
2193         if (wxPySwigInstance_Check(o)) {
2194             wxBitmap*    pt;
2195             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2196                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2197                 return NULL;
2198             }
2199             temp[x] = pt;
2200         }
2201         else {
2202             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2203             return NULL;
2204         }
2205     }
2206     return temp;
2207 }
2208
2209
2210
2211 wxString* wxString_LIST_helper(PyObject* source) {
2212     if (!PyList_Check(source)) {
2213         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2214         return NULL;
2215     }
2216     int count = PyList_Size(source);
2217     wxString* temp = new wxString[count];
2218     if (! temp) {
2219         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2220         return NULL;
2221     }
2222     for (int x=0; x<count; x++) {
2223         PyObject* o = PyList_GetItem(source, x);
2224 #if PYTHON_API_VERSION >= 1009
2225         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2226             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2227             return NULL;
2228         }
2229 #else
2230         if (! PyString_Check(o)) {
2231             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2232             return NULL;
2233         }
2234 #endif
2235
2236         wxString* pStr = wxString_in_helper(o);
2237         temp[x] = *pStr;
2238         delete pStr;
2239     }
2240     return temp;
2241 }
2242
2243
2244 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2245     if (!PyList_Check(source)) {
2246         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2247         return NULL;
2248     }
2249     int count                = PyList_Size(source);
2250     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2251     if (! temp) {
2252         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2253         return NULL;
2254     }
2255     for (int x=0; x<count; x++) {
2256         PyObject* o = PyList_GetItem(source, x);
2257         if (wxPySwigInstance_Check(o)) {
2258             wxAcceleratorEntry* ae;
2259             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2260                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2261                 return NULL;
2262             }
2263             temp[x] = *ae;
2264         }
2265         else if (PyTuple_Check(o)) {
2266             PyObject* o1 = PyTuple_GetItem(o, 0);
2267             PyObject* o2 = PyTuple_GetItem(o, 1);
2268             PyObject* o3 = PyTuple_GetItem(o, 2);
2269             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2270         }
2271         else {
2272             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2273             return NULL;
2274         }
2275     }
2276     return temp;
2277 }
2278
2279
2280 wxPen** wxPen_LIST_helper(PyObject* source) {
2281     if (!PyList_Check(source)) {
2282         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2283         return NULL;
2284     }
2285     int count = PyList_Size(source);
2286     wxPen** temp = new wxPen*[count];
2287     if (!temp) {
2288         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2289         return NULL;
2290     }
2291     for (int x=0; x<count; x++) {
2292         PyObject* o = PyList_GetItem(source, x);
2293         if (wxPySwigInstance_Check(o)) {
2294             wxPen*  pt;
2295             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2296                 delete temp;
2297                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2298                 return NULL;
2299             }
2300             temp[x] = pt;
2301         }
2302         else {
2303             delete temp;
2304             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2305             return NULL;
2306         }
2307     }
2308     return temp;
2309 }
2310
2311
2312 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2313     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2314     PyObject *o1, *o2;
2315
2316     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2317         return false;
2318
2319     if (isFast) {
2320         o1 = PySequence_Fast_GET_ITEM(source, 0);
2321         o2 = PySequence_Fast_GET_ITEM(source, 1);
2322     }
2323     else {
2324         o1 = PySequence_GetItem(source, 0);
2325         o2 = PySequence_GetItem(source, 1);
2326     }
2327
2328     *i1 = PyInt_AsLong(o1);
2329     *i2 = PyInt_AsLong(o2);
2330
2331     if (! isFast) {
2332         Py_DECREF(o1);
2333         Py_DECREF(o2);
2334     }
2335     return true;
2336 }
2337
2338
2339 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2340     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2341     PyObject *o1, *o2, *o3, *o4;
2342
2343     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2344         return false;
2345
2346     if (isFast) {
2347         o1 = PySequence_Fast_GET_ITEM(source, 0);
2348         o2 = PySequence_Fast_GET_ITEM(source, 1);
2349         o3 = PySequence_Fast_GET_ITEM(source, 2);
2350         o4 = PySequence_Fast_GET_ITEM(source, 3);
2351     }
2352     else {
2353         o1 = PySequence_GetItem(source, 0);
2354         o2 = PySequence_GetItem(source, 1);
2355         o3 = PySequence_GetItem(source, 2);
2356         o4 = PySequence_GetItem(source, 3);
2357     }
2358
2359     *i1 = PyInt_AsLong(o1);
2360     *i2 = PyInt_AsLong(o2);
2361     *i3 = PyInt_AsLong(o3);
2362     *i4 = PyInt_AsLong(o4);
2363
2364     if (! isFast) {
2365         Py_DECREF(o1);
2366         Py_DECREF(o2);
2367         Py_DECREF(o3);
2368         Py_DECREF(o4);
2369     }
2370     return true;
2371 }
2372
2373
2374 //----------------------------------------------------------------------
2375
2376 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2377 {
2378     void* ptr;
2379
2380     if (wxPySwigInstance_Check(source) &&
2381         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2382         return true;
2383
2384     PyErr_Clear();
2385     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2386         return true;
2387
2388     return false;
2389 }
2390
2391 bool wxSize_helper(PyObject* source, wxSize** obj)
2392 {
2393     if (source == Py_None) {
2394         **obj = wxSize(-1,-1);
2395         return true;
2396     }
2397     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2398 }
2399
2400
2401 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2402 {
2403     if (source == Py_None) {
2404         **obj = wxPoint(-1,-1);
2405         return true;
2406     }
2407     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2408 }
2409
2410
2411
2412 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2413
2414     if (source == Py_None) {
2415         **obj = wxRealPoint(-1,-1);
2416         return true;
2417     }
2418
2419     // If source is an object instance then it may already be the right type
2420     if (wxPySwigInstance_Check(source)) {
2421         wxRealPoint* ptr;
2422         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2423             goto error;
2424         *obj = ptr;
2425         return true;
2426     }
2427     // otherwise a 2-tuple of floats is expected
2428     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2429         PyObject* o1 = PySequence_GetItem(source, 0);
2430         PyObject* o2 = PySequence_GetItem(source, 1);
2431         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2432             Py_DECREF(o1);
2433             Py_DECREF(o2);
2434             goto error;
2435         }
2436         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2437         Py_DECREF(o1);
2438         Py_DECREF(o2);
2439         return true;
2440     }
2441
2442  error:
2443     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2444     return false;
2445 }
2446
2447
2448
2449 bool wxRect_helper(PyObject* source, wxRect** obj) {
2450
2451     if (source == Py_None) {
2452         **obj = wxRect(-1,-1,-1,-1);
2453         return true;
2454     }
2455
2456     // If source is an object instance then it may already be the right type
2457     if (wxPySwigInstance_Check(source)) {
2458         wxRect* ptr;
2459         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2460             goto error;
2461         *obj = ptr;
2462         return true;
2463     }
2464     // otherwise a 4-tuple of integers is expected
2465     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2466         PyObject* o1 = PySequence_GetItem(source, 0);
2467         PyObject* o2 = PySequence_GetItem(source, 1);
2468         PyObject* o3 = PySequence_GetItem(source, 2);
2469         PyObject* o4 = PySequence_GetItem(source, 3);
2470         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2471             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2472             Py_DECREF(o1);
2473             Py_DECREF(o2);
2474             Py_DECREF(o3);
2475             Py_DECREF(o4);
2476             goto error;
2477         }
2478         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2479                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2480         Py_DECREF(o1);
2481         Py_DECREF(o2);
2482         Py_DECREF(o3);
2483         Py_DECREF(o4);
2484         return true;
2485     }
2486
2487  error:
2488     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2489     return false;
2490 }
2491
2492
2493
2494 bool wxColour_helper(PyObject* source, wxColour** obj) {
2495
2496     if (source == Py_None) {
2497         **obj = wxNullColour;
2498         return true;
2499     }
2500
2501     // If source is an object instance then it may already be the right type
2502     if (wxPySwigInstance_Check(source)) {
2503         wxColour* ptr;
2504         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2505             goto error;
2506         *obj = ptr;
2507         return true;
2508     }
2509     // otherwise check for a string
2510     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2511         wxString spec = Py2wxString(source);
2512         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2513             long red, green, blue;
2514             red = green = blue = 0;
2515             spec.Mid(1,2).ToLong(&red,   16);
2516             spec.Mid(3,2).ToLong(&green, 16);
2517             spec.Mid(5,2).ToLong(&blue,  16);
2518
2519             **obj = wxColour(red, green, blue);
2520             return true;
2521         }
2522         else {                                       // it's a colour name
2523             **obj = wxColour(spec);
2524             return true;
2525         }
2526     }
2527     // last chance: 3-tuple or 4-tuple of integers is expected
2528     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2529         PyObject* o1 = PySequence_GetItem(source, 0);
2530         PyObject* o2 = PySequence_GetItem(source, 1);
2531         PyObject* o3 = PySequence_GetItem(source, 2);
2532         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2533             Py_DECREF(o1);
2534             Py_DECREF(o2);
2535             Py_DECREF(o3);
2536             goto error;
2537         }
2538         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2539         Py_DECREF(o1);
2540         Py_DECREF(o2);
2541         Py_DECREF(o3);
2542         return true;
2543     }
2544     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2545         PyObject* o1 = PySequence_GetItem(source, 0);
2546         PyObject* o2 = PySequence_GetItem(source, 1);
2547         PyObject* o3 = PySequence_GetItem(source, 2);
2548         PyObject* o4 = PySequence_GetItem(source, 3);
2549         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2550             Py_DECREF(o1);
2551             Py_DECREF(o2);
2552             Py_DECREF(o3);
2553             Py_DECREF(o4);
2554             goto error;
2555         }
2556         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3), PyInt_AsLong(o4));
2557         Py_DECREF(o1);
2558         Py_DECREF(o2);
2559         Py_DECREF(o3);
2560         Py_DECREF(o4);
2561         return true;
2562     }
2563
2564  error:
2565     PyErr_SetString(PyExc_TypeError,
2566                     "Expected a wxColour object, a string containing a colour name or '#RRGGBB', or a 3- or 4-tuple of integers.");
2567     return false;
2568 }
2569
2570
2571 bool wxColour_typecheck(PyObject* source) {
2572
2573     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2574         return true;
2575
2576     if (PyString_Check(source) || PyUnicode_Check(source))
2577         return true;
2578
2579     return false;
2580 }
2581
2582
2583
2584 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2585
2586     if (source == Py_None) {
2587         **obj = wxPoint2D(-1,-1);
2588         return true;
2589     }
2590
2591     // If source is an object instance then it may already be the right type
2592     if (wxPySwigInstance_Check(source)) {
2593         wxPoint2D* ptr;
2594         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2595             goto error;
2596         *obj = ptr;
2597         return true;
2598     }
2599     // otherwise a length-2 sequence of floats is expected
2600     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2601         PyObject* o1 = PySequence_GetItem(source, 0);
2602         PyObject* o2 = PySequence_GetItem(source, 1);
2603         // This should really check for floats, not numbers -- but that would break code.
2604         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2605             Py_DECREF(o1);
2606             Py_DECREF(o2);
2607             goto error;
2608         }
2609         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2610         Py_DECREF(o1);
2611         Py_DECREF(o2);
2612         return true;
2613     }
2614  error:
2615     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2D object.");
2616     return false;
2617 }
2618
2619
2620 //----------------------------------------------------------------------
2621
2622 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
2623
2624     PyObject* list = PyList_New(0);
2625     for (size_t i=0; i < arr.GetCount(); i++) {
2626 #if wxUSE_UNICODE
2627         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2628 #else
2629         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2630 #endif
2631         PyList_Append(list, str);
2632         Py_DECREF(str);
2633     }
2634     return list;
2635 }
2636
2637
2638 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2639
2640     PyObject* list = PyList_New(0);
2641     for (size_t i=0; i < arr.GetCount(); i++) {
2642         PyObject* number = PyInt_FromLong(arr[i]);
2643         PyList_Append(list, number);
2644         Py_DECREF(number);
2645     }
2646     return list;
2647 }
2648
2649
2650 //----------------------------------------------------------------------
2651 // wxPyImageHandler methods
2652 //
2653 // TODO: Switch these to use wxPython's standard macros and helper classes
2654 //       for calling callbacks.
2655
2656 PyObject* wxPyImageHandler::m_DoCanRead_Name = NULL;
2657 PyObject* wxPyImageHandler::m_GetImageCount_Name = NULL;
2658 PyObject* wxPyImageHandler::m_LoadFile_Name = NULL;
2659 PyObject* wxPyImageHandler::m_SaveFile_Name = NULL;
2660
2661 PyObject* wxPyImageHandler::py_InputStream(wxInputStream* stream) {
2662     return wxPyConstructObject(new wxPyInputStream(stream),
2663                                wxT("wxPyInputStream"), 0);
2664 }
2665
2666 PyObject* wxPyImageHandler::py_Image(wxImage* image) {
2667     return wxPyConstructObject(image, wxT("wxImage"), 0);
2668 }
2669
2670 PyObject* wxPyImageHandler::py_OutputStream(wxOutputStream* stream) {
2671     return wxPyConstructObject(stream, wxT("wxOutputStream"), 0);
2672 }
2673
2674 wxPyImageHandler::wxPyImageHandler():
2675     m_self(NULL)
2676 {
2677     if (!m_DoCanRead_Name) {
2678         m_DoCanRead_Name = PyString_FromString("DoCanRead");
2679         m_GetImageCount_Name = PyString_FromString("GetImageCount");
2680         m_LoadFile_Name = PyString_FromString("LoadFile");
2681         m_SaveFile_Name = PyString_FromString("SaveFile");
2682     }
2683 }
2684
2685 wxPyImageHandler::~wxPyImageHandler() {
2686     if (m_self) {
2687         Py_DECREF(m_self);
2688         m_self = NULL;
2689     }
2690 }
2691
2692 void wxPyImageHandler::_SetSelf(PyObject *self) {
2693     // should check here for isinstance(PyImageHandler) ??
2694     m_self = self;
2695     Py_INCREF(m_self);
2696 }
2697
2698 bool wxPyImageHandler::DoCanRead(wxInputStream& stream) {
2699     // check if our object has this method
2700     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2701     if (!m_self || !PyObject_HasAttr(m_self, m_DoCanRead_Name)) {
2702         wxPyEndBlockThreads(blocked);
2703         return false;
2704     }
2705
2706     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_DoCanRead_Name,
2707                                                py_InputStream(&stream), NULL);
2708     bool retval = false;
2709     if (res) {
2710         retval = PyInt_AsLong(res);
2711         Py_DECREF(res);
2712         PyErr_Clear();
2713     }
2714     else
2715         PyErr_Print();
2716     wxPyEndBlockThreads(blocked);
2717     return retval;
2718 }
2719
2720 bool wxPyImageHandler::LoadFile( wxImage* image, wxInputStream& stream,
2721                                  bool verbose, int index ) {
2722     // check if our object has this method
2723     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2724     if (!m_self || !PyObject_HasAttr(m_self, m_LoadFile_Name)) {
2725         wxPyEndBlockThreads(blocked);
2726         return false;
2727     }
2728     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_LoadFile_Name,
2729                                                py_Image(image),
2730                                                py_InputStream(&stream),
2731                                                PyInt_FromLong(verbose),
2732                                                PyInt_FromLong(index),
2733                                                NULL);
2734     bool retval = false;
2735     if (res) {
2736         retval = PyInt_AsLong(res);
2737         Py_DECREF(res);
2738         PyErr_Clear();
2739     } else
2740         PyErr_Print();
2741     wxPyEndBlockThreads(blocked);
2742     return retval;
2743 }
2744
2745 bool wxPyImageHandler::SaveFile( wxImage* image, wxOutputStream& stream,
2746                                  bool verbose ) {
2747     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2748     if (!m_self || !PyObject_HasAttr(m_self, m_SaveFile_Name)) {
2749         wxPyEndBlockThreads(blocked);
2750         return false;
2751     }
2752     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_SaveFile_Name,
2753                                                py_Image(image),
2754                                                py_OutputStream(&stream),
2755                                                PyInt_FromLong(verbose),
2756                                                NULL);
2757     bool retval = false;
2758     if(res) {
2759         retval=PyInt_AsLong(res);
2760         Py_DECREF(res);
2761         PyErr_Clear();
2762     } else
2763         PyErr_Print();
2764     wxPyEndBlockThreads(blocked);
2765     return retval;
2766 }
2767
2768 int wxPyImageHandler::GetImageCount( wxInputStream& stream ) {
2769     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2770     if (!m_self || !PyObject_HasAttr(m_self, m_GetImageCount_Name)) {
2771         wxPyEndBlockThreads(blocked);
2772         return 1;
2773     }
2774     PyObject *res=PyObject_CallMethodObjArgs(m_self, m_GetImageCount_Name,
2775                                              py_InputStream(&stream),
2776                                              NULL);
2777     int retval = 1;
2778     if(res) {
2779         retval=PyInt_AsLong(res);
2780         Py_DECREF(res);
2781         PyErr_Clear();
2782     } else
2783         PyErr_Print();
2784     wxPyEndBlockThreads(blocked);
2785     return retval;
2786 }
2787
2788
2789 //----------------------------------------------------------------------
2790 // Function to test if the Display (or whatever is the platform equivallent)
2791 // can be connected to.  This is accessable from wxPython as a staticmethod of
2792 // wx.App called DisplayAvailable().
2793
2794
2795 bool wxPyTestDisplayAvailable()
2796 {
2797 #ifdef __WXGTK__
2798     Display* display;
2799     display = XOpenDisplay(NULL);
2800     if (display == NULL)
2801         return false;
2802     XCloseDisplay(display);
2803     return true;
2804 #endif
2805
2806 #ifdef __WXMAC__
2807     // This is adapted from Python's Mac/Modules/MacOS.c in the
2808     // MacOS_WMAvailable function.
2809     bool rv;
2810     ProcessSerialNumber psn;
2811
2812     /*
2813     ** This is a fairly innocuous call to make if we don't have a window
2814     ** manager, or if we have no permission to talk to it. It will print
2815     ** a message on stderr, but at least it won't abort the process.
2816     ** It appears the function caches the result itself, and it's cheap, so
2817     ** no need for us to cache.
2818     */
2819 #ifdef kCGNullDirectDisplay
2820     /* On 10.1 CGMainDisplayID() isn't available, and
2821     ** kCGNullDirectDisplay isn't defined.
2822     */
2823     if (CGMainDisplayID() == 0) {
2824         rv = false;
2825     } else
2826 #endif
2827     {
2828         // Also foreground the application on the first call as a side-effect.
2829         if (GetCurrentProcess(&psn) < 0 || SetFrontProcess(&psn) < 0) {
2830             rv = false;
2831         } else {
2832             rv = true;
2833         }
2834     }
2835     return rv;
2836 #endif
2837
2838 #ifdef __WXMSW__
2839     // TODO...
2840     return true;
2841 #endif
2842 }
2843
2844
2845 //----------------------------------------------------------------------
2846 //----------------------------------------------------------------------
2847
2848
2849
2850