wxPython/src/helpers.cpp

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