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