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:     7/1/97
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #include <stdio.h>  // get the correct definition of NULL
  14
  15 #undef DEBUG
  16 #include <Python.h>
  17 #include "helpers.h"
  18 #include "pyistream.h"
  19
  20 #ifdef __WXMSW__
  21 #include <wx/msw/private.h>
  22 #include <wx/msw/winundef.h>
  23 #include <wx/msw/msvcrt.h>
  24 #endif
  25
  26 #ifdef __WXGTK__
  27 #include <gtk/gtk.h>
  28 #include <gdk/gdkprivate.h>
  29 #include <wx/gtk/win_gtk.h>
  30 #endif
  31
  32
  33 //----------------------------------------------------------------------
  34
  35 #if PYTHON_API_VERSION <= 1007 && wxUSE_UNICODE
  36 #error Python must support Unicode to use wxWindows Unicode
  37 #endif
  38
  39 //----------------------------------------------------------------------
  40
  41 #ifdef __WXGTK__
  42 int  WXDLLEXPORT wxEntryStart( int& argc, char** argv );
  43 #else
  44 int  WXDLLEXPORT wxEntryStart( int argc, char** argv );
  45 #endif
  46 int  WXDLLEXPORT wxEntryInitGui();
  47 void WXDLLEXPORT wxEntryCleanup();
  48
  49 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  50 bool wxPyDoCleanup = FALSE;
  51
  52
  53 #ifdef WXP_WITH_THREAD
  54 struct wxPyThreadState {
  55     unsigned long  tid;
  56     PyThreadState* tstate;
  57
  58     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  59         : tid(_tid), tstate(_tstate) {}
  60 };
  61
  62 #include <wx/dynarray.h>
  63 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  64 #include <wx/arrimpl.cpp>
  65 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  66
  67 wxPyThreadStateArray* wxPyTStates = NULL;
  68 wxMutex*              wxPyTMutex = NULL;
  69 #endif
  70
  71
  72 #ifdef __WXMSW__             // If building for win32...
  73 //----------------------------------------------------------------------
  74 // This gets run when the DLL is loaded.  We just need to save a handle.
  75 //----------------------------------------------------------------------
  76
  77 BOOL WINAPI DllMain(
  78     HINSTANCE   hinstDLL,    // handle to DLL module
  79     DWORD       fdwReason,   // reason for calling function
  80     LPVOID      lpvReserved  // reserved
  81    )
  82 {
  83     // If wxPython is embedded in another wxWindows app then
  84     // the inatance has already been set.
  85     if (! wxGetInstance())
  86         wxSetInstance(hinstDLL);
  87     return TRUE;
  88 }
  89 #endif
  90
  91 //----------------------------------------------------------------------
  92 // Classes for implementing the wxp main application shell.
  93 //----------------------------------------------------------------------
  94
  95
  96 wxPyApp::wxPyApp() {
  97 //    printf("**** ctor\n");
  98 }
  99
 100 wxPyApp::~wxPyApp() {
 101 //    printf("**** dtor\n");
 102 }
 103
 104
 105 // This one isn't acutally called...  See __wxStart()
 106 bool wxPyApp::OnInit() {
 107     return FALSE;
 108 }
 109
 110
 111 int  wxPyApp::MainLoop() {
 112     int retval = 0;
 113
 114     DeletePendingObjects();
 115     bool initialized = wxTopLevelWindows.GetCount() != 0;
 116 #ifdef __WXGTK__
 117     m_initialized = initialized;
 118 #endif
 119
 120     if (initialized) {
 121         retval = wxApp::MainLoop();
 122         OnExit();
 123     }
 124     return retval;
 125 }
 126
 127
 128
 129 //---------------------------------------------------------------------
 130 //----------------------------------------------------------------------
 131
 132
 133 static char* wxPyCopyCString(const wxChar* src)
 134 {
 135     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 136     size_t len = strlen(buff);
 137     char*  dest = new char[len+1];
 138     strcpy(dest, buff);
 139     return dest;
 140 }
 141
 142 #if wxUSE_UNICODE
 143 static char* wxPyCopyCString(const char* src)   // we need a char version too
 144 {
 145     size_t len = strlen(src);
 146     char*  dest = new char[len+1];
 147     strcpy(dest, src);
 148     return dest;
 149 }
 150 #endif
 151
 152 static wxChar* wxPyCopyWString(const char *src)
 153 {
 154     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 155     wxString str(src, *wxConvCurrent);
 156     return copystring(str);
 157 }
 158
 159 #if wxUSE_UNICODE
 160 static wxChar* wxPyCopyWString(const wxChar *src)
 161 {
 162     return copystring(src);
 163 }
 164 #endif
 165
 166
 167 //----------------------------------------------------------------------
 168
 169 // This is where we pick up the first part of the wxEntry functionality...
 170 // The rest is in __wxStart and  __wxCleanup.  This function is called when
 171 // wxcmodule is imported.  (Before there is a wxApp object.)
 172 void __wxPreStart()
 173 {
 174
 175 #ifdef __WXMSW__
 176 //    wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 177 #endif
 178
 179 #ifdef WXP_WITH_THREAD
 180     PyEval_InitThreads();
 181     wxPyTStates = new wxPyThreadStateArray;
 182     wxPyTMutex = new wxMutex;
 183 #endif
 184
 185     wxApp::CheckBuildOptions(wxBuildOptions());
 186
 187     // Bail out if there is already a wxApp created.  This means that the
 188     // toolkit has already been initialized, as in embedding wxPython in
 189     // a C++ wxWindows app, so we don't need to call wxEntryStart.
 190     if (wxTheApp != NULL) {
 191         return;
 192     }
 193     wxPyDoCleanup = TRUE;
 194
 195     int argc = 0;
 196     char** argv = NULL;
 197     PyObject* sysargv = PySys_GetObject("argv");
 198     if (sysargv != NULL) {
 199         argc = PyList_Size(sysargv);
 200         argv = new char*[argc+1];
 201         int x;
 202         for(x=0; x<argc; x++) {
 203             PyObject *item = PyList_GetItem(sysargv, x);
 204 #if wxUSE_UNICODE
 205             if (PyUnicode_Check(item))
 206                 argv[x] = wxPyCopyCString(PyUnicode_AS_UNICODE(item));
 207             else
 208 #endif
 209                 argv[x] = wxPyCopyCString(PyString_AsString(item));
 210         }
 211         argv[argc] = NULL;
 212     }
 213
 214     wxEntryStart(argc, argv);
 215     delete [] argv;
 216 }
 217
 218
 219
 220 // Start the user application, user App's OnInit method is a parameter here
 221 PyObject* __wxStart(PyObject* /* self */, PyObject* args)
 222 {
 223     PyObject*   onInitFunc = NULL;
 224     PyObject*   arglist;
 225     PyObject*   result;
 226     long        bResult;
 227
 228     if (!PyArg_ParseTuple(args, "O", &onInitFunc))
 229         return NULL;
 230
 231 #if 0  // Try it out without this check, see how it does...
 232     if (wxTopLevelWindows.Number() > 0) {
 233         PyErr_SetString(PyExc_TypeError, "Only 1 wxApp per process!");
 234         return NULL;
 235     }
 236 #endif
 237
 238     // This is the next part of the wxEntry functionality...
 239     int argc = 0;
 240     wxChar** argv = NULL;
 241     PyObject* sysargv = PySys_GetObject("argv");
 242     if (sysargv != NULL) {
 243         argc = PyList_Size(sysargv);
 244         argv = new wxChar*[argc+1];
 245         int x;
 246         for(x=0; x<argc; x++) {
 247             PyObject *pyArg = PyList_GetItem(sysargv, x);
 248 #if wxUSE_UNICODE
 249             if (PyUnicode_Check(pyArg))
 250                 argv[x] = wxPyCopyWString(PyUnicode_AS_UNICODE(pyArg));
 251             else
 252 #endif
 253                 argv[x] = wxPyCopyWString(PyString_AsString(pyArg));
 254         }
 255         argv[argc] = NULL;
 256     }
 257
 258     wxPythonApp->argc = argc;
 259     wxPythonApp->argv = argv;
 260
 261     wxEntryInitGui();
 262
 263     // Call the Python App's OnInit function
 264     arglist = PyTuple_New(0);
 265     result = PyEval_CallObject(onInitFunc, arglist);
 266     if (!result) {      // an exception was raised.
 267         return NULL;
 268     }
 269
 270     if (! PyInt_Check(result)) {
 271         PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 272         return NULL;
 273     }
 274     bResult = PyInt_AS_LONG(result);
 275     if (! bResult) {
 276         PyErr_SetString(PyExc_SystemExit, "OnInit returned FALSE, exiting...");
 277         return NULL;
 278     }
 279
 280 #ifdef __WXGTK__
 281     wxTheApp->m_initialized = (wxTopLevelWindows.GetCount() > 0);
 282 #endif
 283
 284     Py_INCREF(Py_None);
 285     return Py_None;
 286 }
 287
 288
 289 void __wxCleanup() {
 290     if (wxPyDoCleanup)
 291         wxEntryCleanup();
 292 #ifdef WXP_WITH_THREAD
 293     delete wxPyTMutex;
 294     wxPyTMutex = NULL;
 295     wxPyTStates->Empty();
 296     delete wxPyTStates;
 297     wxPyTStates = NULL;
 298 #endif
 299 }
 300
 301
 302
 303 static PyObject* wxPython_dict = NULL;
 304 static PyObject* wxPyPtrTypeMap = NULL;
 305
 306
 307 PyObject* __wxSetDictionary(PyObject* /* self */, PyObject* args)
 308 {
 309
 310     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 311         return NULL;
 312
 313     if (!PyDict_Check(wxPython_dict)) {
 314         PyErr_SetString(PyExc_TypeError, "_wxSetDictionary must have dictionary object!");
 315         return NULL;
 316     }
 317
 318     if (! wxPyPtrTypeMap)
 319         wxPyPtrTypeMap = PyDict_New();
 320     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 321
 322
 323 #ifdef __WXMOTIF__
 324 #define wxPlatform "__WXMOTIF__"
 325 #endif
 326 #ifdef __WXX11__
 327 #define wxPlatform "__WXX11__"
 328 #endif
 329 #ifdef __WXGTK__
 330 #define wxPlatform "__WXGTK__"
 331 #endif
 332 #if defined(__WIN32__) || defined(__WXMSW__)
 333 #define wxPlatform "__WXMSW__"
 334 #endif
 335 #ifdef __WXMAC__
 336 #define wxPlatform "__WXMAC__"
 337 #endif
 338
 339     PyDict_SetItemString(wxPython_dict, "wxPlatform", PyString_FromString(wxPlatform));
 340     PyDict_SetItemString(wxPython_dict, "wxUSE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 341
 342     Py_INCREF(Py_None);
 343     return Py_None;
 344 }
 345
 346 //---------------------------------------------------------------------------
 347
 348 void wxPyClientData_dtor(wxPyClientData* self) {
 349     wxPyBeginBlockThreads();
 350     Py_DECREF(self->m_obj);
 351     wxPyEndBlockThreads();
 352 }
 353
 354 void wxPyUserData_dtor(wxPyUserData* self) {
 355     wxPyBeginBlockThreads();
 356     Py_DECREF(self->m_obj);
 357     wxPyEndBlockThreads();
 358 }
 359
 360
 361 // This is called when an OOR controled object is being destroyed.  Although
 362 // the C++ object is going away there is no way to force the Python object
 363 // (and all references to it) to die too.  This causes problems (crashes) in
 364 // wxPython when a python shadow object attempts to call a C++ method using
 365 // the now bogus pointer... So to try and prevent this we'll do a little black
 366 // magic and change the class of the python instance to a class that will
 367 // raise an exception for any attempt to call methods with it.  See
 368 // _wxPyDeadObject in _extras.py for the implementation of this class.
 369 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 370
 371     static PyObject* deadObjectClass = NULL;
 372
 373     wxPyBeginBlockThreads();
 374     if (deadObjectClass == NULL) {
 375         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 376         wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 377         Py_INCREF(deadObjectClass);
 378     }
 379
 380     // Clear the instance's dictionary, put the name of the old class into the
 381     // instance, and then reset the class to be the dead class.
 382     if (self->m_obj->ob_refcnt > 1) {  // but only if there is more than one reference
 383         wxASSERT_MSG(PyInstance_Check(self->m_obj), wxT("m_obj not an instance!?!?!"));
 384         PyInstanceObject* inst = (PyInstanceObject*)self->m_obj;
 385         PyDict_Clear(inst->in_dict);
 386         PyDict_SetItemString(inst->in_dict, "_name", inst->in_class->cl_name);
 387         inst->in_class = (PyClassObject*)deadObjectClass;
 388         Py_INCREF(deadObjectClass);
 389     }
 390     wxPyEndBlockThreads();
 391 }
 392
 393 //---------------------------------------------------------------------------
 394 // Stuff used by OOR to find the right wxPython class type to return and to
 395 // build it.
 396
 397
 398 // The pointer type map is used when the "pointer" type name generated by SWIG
 399 // is not the same as the shadow class name, for example wxPyTreeCtrl
 400 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 401 // so we'll just make it a Python dictionary in the wx module's namespace.
 402 // (See __wxSetDictionary)
 403 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 404     if (! wxPyPtrTypeMap)
 405         wxPyPtrTypeMap = PyDict_New();
 406     PyDict_SetItemString(wxPyPtrTypeMap,
 407                          (char*)commonName,
 408                          PyString_FromString((char*)ptrName));
 409 }
 410
 411
 412
 413 PyObject* wxPyClassExists(const wxString& className) {
 414
 415     if (!className)
 416         return NULL;
 417
 418     char    buff[64];               // should always be big enough...
 419
 420     sprintf(buff, "%sPtr", className.mbc_str());
 421     PyObject* classobj = PyDict_GetItemString(wxPython_dict, buff);
 422
 423     return classobj;  // returns NULL if not found
 424 }
 425
 426
 427 PyObject*  wxPyMake_wxObject(wxObject* source, bool checkEvtHandler) {
 428     PyObject* target = NULL;
 429     bool      isEvtHandler = FALSE;
 430
 431     if (source) {
 432         // If it's derived from wxEvtHandler then there may
 433         // already be a pointer to a Python object that we can use
 434         // in the OOR data.
 435         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 436             isEvtHandler = TRUE;
 437             wxEvtHandler* eh = (wxEvtHandler*)source;
 438             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 439             if (data) {
 440                 target = data->m_obj;
 441                 Py_INCREF(target);
 442             }
 443         }
 444
 445         if (! target) {
 446             // Otherwise make it the old fashioned way by making a
 447             // new shadow object and putting this pointer in it.
 448             wxClassInfo* info = source->GetClassInfo();
 449             wxChar*      name = (wxChar*)info->GetClassName();
 450             PyObject*    klass = wxPyClassExists(name);
 451             while (info && !klass) {
 452                 name = (wxChar*)info->GetBaseClassName1();
 453                 info = wxClassInfo::FindClass(name);
 454                 klass = wxPyClassExists(name);
 455             }
 456             if (info) {
 457                 target = wxPyConstructObject(source, name, klass, FALSE);
 458                 if (target && isEvtHandler)
 459                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
 460             } else {
 461                 wxString msg(wxT("wxPython class not found for "));
 462                 msg += source->GetClassInfo()->GetClassName();
 463                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
 464                 target = NULL;
 465             }
 466         }
 467     } else {  // source was NULL so return None.
 468         Py_INCREF(Py_None); target = Py_None;
 469     }
 470     return target;
 471 }
 472
 473
 474 PyObject*  wxPyMake_wxSizer(wxSizer* source) {
 475     PyObject* target = NULL;
 476
 477     if (source && wxIsKindOf(source, wxSizer)) {
 478         // If it's derived from wxSizer then there may
 479         // already be a pointer to a Python object that we can use
 480         // in the OOR data.
 481         wxSizer* sz = (wxSizer*)source;
 482         wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
 483         if (data) {
 484             target = data->m_obj;
 485             Py_INCREF(target);
 486         }
 487     }
 488     if (! target) {
 489         target = wxPyMake_wxObject(source, FALSE);
 490         if (target != Py_None)
 491             ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
 492     }
 493     return target;
 494 }
 495
 496
 497
 498 //---------------------------------------------------------------------------
 499
 500 PyObject* wxPyConstructObject(void* ptr,
 501                               const wxString& className,
 502                               PyObject* klass,
 503                               int setThisOwn) {
 504
 505     PyObject* obj;
 506     PyObject* arg;
 507     PyObject* item;
 508     wxString  name(className);
 509     char      swigptr[64];      // should always be big enough...
 510     char      buff[64];
 511
 512     if ((item = PyDict_GetItemString(wxPyPtrTypeMap, (char*)(const char*)name.mbc_str())) != NULL) {
 513         name = wxString(PyString_AsString(item), *wxConvCurrent);
 514     }
 515     sprintf(buff, "_%s_p", (const char*)name.mbc_str());
 516     SWIG_MakePtr(swigptr, ptr, buff);
 517
 518     arg = Py_BuildValue("(s)", swigptr);
 519     obj = PyInstance_New(klass, arg, NULL);
 520     Py_DECREF(arg);
 521
 522     if (setThisOwn) {
 523         PyObject* one = PyInt_FromLong(1);
 524         PyObject_SetAttrString(obj, "thisown", one);
 525         Py_DECREF(one);
 526     }
 527
 528     return obj;
 529 }
 530
 531
 532 PyObject* wxPyConstructObject(void* ptr,
 533                               const wxString& className,
 534                               int setThisOwn) {
 535     if (!ptr) {
 536         Py_INCREF(Py_None);
 537         return Py_None;
 538     }
 539
 540     char    buff[64];               // should always be big enough...
 541     sprintf(buff, "%sPtr", (const char*)className.mbc_str());
 542
 543     wxASSERT_MSG(wxPython_dict, wxT("wxPython_dict is not set yet!!"));
 544
 545     PyObject* classobj = PyDict_GetItemString(wxPython_dict, buff);
 546     if (! classobj) {
 547         wxString msg(wxT("wxPython class not found for "));
 548         msg += className;
 549         PyErr_SetString(PyExc_NameError, msg.mbc_str());
 550         return NULL;
 551     }
 552
 553     return wxPyConstructObject(ptr, className, classobj, setThisOwn);
 554 }
 555
 556
 557 //---------------------------------------------------------------------------
 558
 559
 560 #ifdef WXP_WITH_THREAD
 561 inline
 562 unsigned long wxPyGetCurrentThreadId() {
 563     return wxThread::GetCurrentId();
 564 }
 565
 566 static PyThreadState* gs_shutdownTState;
 567 static
 568 PyThreadState* wxPyGetThreadState() {
 569     if (wxPyTMutex == NULL) // Python is shutting down...
 570         return gs_shutdownTState;
 571
 572     unsigned long ctid = wxPyGetCurrentThreadId();
 573     PyThreadState* tstate = NULL;
 574
 575     wxPyTMutex->Lock();
 576     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 577         wxPyThreadState& info = wxPyTStates->Item(i);
 578         if (info.tid == ctid) {
 579             tstate = info.tstate;
 580             break;
 581         }
 582     }
 583     wxPyTMutex->Unlock();
 584     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
 585     return tstate;
 586 }
 587
 588 static
 589 void wxPySaveThreadState(PyThreadState* tstate) {
 590     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
 591         gs_shutdownTState = tstate;
 592         return;
 593     }
 594     unsigned long ctid = wxPyGetCurrentThreadId();
 595     wxPyTMutex->Lock();
 596     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 597         wxPyThreadState& info = wxPyTStates->Item(i);
 598         if (info.tid == ctid) {
 599             info.tstate = tstate;
 600             wxPyTMutex->Unlock();
 601             return;
 602         }
 603     }
 604     // not found, so add it...
 605     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
 606     wxPyTMutex->Unlock();
 607 }
 608
 609 #endif
 610
 611
 612 // Calls from Python to wxWindows code are wrapped in calls to these
 613 // functions:
 614
 615 PyThreadState* wxPyBeginAllowThreads() {
 616 #ifdef WXP_WITH_THREAD
 617     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
 618     wxPySaveThreadState(saved);
 619     return saved;
 620 #else
 621     return NULL;
 622 #endif
 623 }
 624
 625 void wxPyEndAllowThreads(PyThreadState* saved) {
 626 #ifdef WXP_WITH_THREAD
 627     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
 628 #endif
 629 }
 630
 631
 632
 633 // Calls from wxWindows back to Python code, or even any PyObject
 634 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
 635
 636 void wxPyBeginBlockThreads() {
 637 #ifdef WXP_WITH_THREAD
 638     PyThreadState* tstate = wxPyGetThreadState();
 639     PyEval_RestoreThread(tstate);
 640 #endif
 641 }
 642
 643
 644 void wxPyEndBlockThreads() {
 645 #ifdef WXP_WITH_THREAD
 646     // Is there any need to save it again?
 647     // PyThreadState* tstate =
 648     PyEval_SaveThread();
 649 #endif
 650 }
 651
 652
 653 //---------------------------------------------------------------------------
 654 // wxPyInputStream and wxPyCBInputStream methods
 655
 656
 657 void wxPyInputStream::close() {
 658     /* do nothing for now */
 659 }
 660
 661 void wxPyInputStream::flush() {
 662     /* do nothing for now */
 663 }
 664
 665 bool wxPyInputStream::eof() {
 666     if (m_wxis)
 667         return m_wxis->Eof();
 668     else
 669         return TRUE;
 670 }
 671
 672 wxPyInputStream::~wxPyInputStream() {
 673     /* do nothing */
 674 }
 675
 676
 677
 678
 679 PyObject* wxPyInputStream::read(int size) {
 680     PyObject* obj = NULL;
 681     wxMemoryBuffer buf;
 682     const int BUFSIZE = 1024;
 683
 684     // check if we have a real wxInputStream to work with
 685     if (!m_wxis) {
 686         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
 687         return NULL;
 688     }
 689
 690     if (size < 0) {
 691         // read until EOF
 692         while (! m_wxis->Eof()) {
 693             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
 694             buf.UngetAppendBuf(m_wxis->LastRead());
 695         }
 696
 697     } else {  // Read only size number of characters
 698         m_wxis->Read(buf.GetWriteBuf(size), size);
 699         buf.UngetWriteBuf(m_wxis->LastRead());
 700     }
 701
 702     // error check
 703     if (m_wxis->LastError() == wxSTREAM_READ_ERROR) {
 704         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
 705     }
 706     else {
 707         // We use only strings for the streams, not unicode
 708         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
 709     }
 710     return obj;
 711 }
 712
 713
 714 PyObject* wxPyInputStream::readline(int size) {
 715     PyObject* obj = NULL;
 716     wxMemoryBuffer buf;
 717     int i;
 718     char ch;
 719
 720     // check if we have a real wxInputStream to work with
 721     if (!m_wxis) {
 722         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
 723         return NULL;
 724     }
 725
 726     // read until \n or byte limit reached
 727     for (i=ch=0; (ch != '\n') && (!m_wxis->Eof()) && ((size < 0) || (i < size)); i++) {
 728         ch = m_wxis->GetC();
 729         buf.AppendByte(ch);
 730     }
 731
 732     // errorcheck
 733     if (m_wxis->LastError() == wxSTREAM_READ_ERROR) {
 734         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
 735     }
 736     else {
 737         // We use only strings for the streams, not unicode
 738         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
 739     }
 740     return obj;
 741 }
 742
 743
 744 PyObject* wxPyInputStream::readlines(int sizehint) {
 745     PyObject* pylist;
 746
 747     // check if we have a real wxInputStream to work with
 748     if (!m_wxis) {
 749         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream below");
 750         return NULL;
 751     }
 752
 753     // init list
 754     pylist = PyList_New(0);
 755     if (!pylist) {
 756         PyErr_NoMemory();
 757         return NULL;
 758     }
 759
 760     // read sizehint bytes or until EOF
 761     int i;
 762     for (i=0; (!m_wxis->Eof()) && ((sizehint < 0) || (i < sizehint));) {
 763         PyObject* s = this->readline();
 764         if (s == NULL) {
 765             Py_DECREF(pylist);
 766             return NULL;
 767         }
 768         PyList_Append(pylist, s);
 769         i += PyString_Size(s);
 770     }
 771
 772     // error check
 773     if (m_wxis->LastError() == wxSTREAM_READ_ERROR) {
 774         Py_DECREF(pylist);
 775         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
 776         return NULL;
 777     }
 778
 779     return pylist;
 780 }
 781
 782
 783 void wxPyInputStream::seek(int offset, int whence) {
 784     if (m_wxis)
 785         m_wxis->SeekI(offset, wxSeekMode(whence));
 786 }
 787
 788 int wxPyInputStream::tell(){
 789     if (m_wxis)
 790         return m_wxis->TellI();
 791     else return 0;
 792 }
 793
 794
 795
 796
 797 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
 798     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
 799 {}
 800
 801
 802 wxPyCBInputStream::~wxPyCBInputStream() {
 803     if (m_block) wxPyBeginBlockThreads();
 804     Py_XDECREF(m_read);
 805     Py_XDECREF(m_seek);
 806     Py_XDECREF(m_tell);
 807     if (m_block) wxPyEndBlockThreads();
 808 }
 809
 810
 811 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
 812     if (block) wxPyBeginBlockThreads();
 813
 814     PyObject* read = getMethod(py, "read");
 815     PyObject* seek = getMethod(py, "seek");
 816     PyObject* tell = getMethod(py, "tell");
 817
 818     if (!read) {
 819         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
 820         Py_XDECREF(read);
 821         Py_XDECREF(seek);
 822         Py_XDECREF(tell);
 823         if (block) wxPyEndBlockThreads();
 824         return NULL;
 825     }
 826
 827     if (block) wxPyEndBlockThreads();
 828     return new wxPyCBInputStream(read, seek, tell, block);
 829 }
 830
 831 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
 832     if (!PyObject_HasAttrString(py, name))
 833         return NULL;
 834     PyObject* o = PyObject_GetAttrString(py, name);
 835     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
 836         Py_DECREF(o);
 837         return NULL;
 838     }
 839     return o;
 840 }
 841
 842
 843 size_t wxPyCBInputStream::GetSize() const {
 844     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
 845     if (m_seek && m_tell) {
 846         off_t temp = self->OnSysTell();
 847         off_t ret = self->OnSysSeek(0, wxFromEnd);
 848         self->OnSysSeek(temp, wxFromStart);
 849         return ret;
 850     }
 851     else
 852         return 0;
 853 }
 854
 855
 856 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
 857     if (bufsize == 0)
 858         return 0;
 859
 860     wxPyBeginBlockThreads();
 861     PyObject* arglist = Py_BuildValue("(i)", bufsize);
 862     PyObject* result = PyEval_CallObject(m_read, arglist);
 863     Py_DECREF(arglist);
 864
 865     size_t o = 0;
 866     if ((result != NULL) && PyString_Check(result)) {
 867         o = PyString_Size(result);
 868         if (o == 0)
 869             m_lasterror = wxSTREAM_EOF;
 870         if (o > bufsize)
 871             o = bufsize;
 872         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
 873         Py_DECREF(result);
 874
 875     }
 876     else
 877         m_lasterror = wxSTREAM_READ_ERROR;
 878     wxPyEndBlockThreads();
 879     m_lastcount = o;
 880     return o;
 881 }
 882
 883 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
 884     m_lasterror = wxSTREAM_WRITE_ERROR;
 885     return 0;
 886 }
 887
 888 off_t wxPyCBInputStream::OnSysSeek(off_t off, wxSeekMode mode) {
 889     wxPyBeginBlockThreads();
 890     PyObject* arglist = Py_BuildValue("(ii)", off, mode);
 891     PyObject* result = PyEval_CallObject(m_seek, arglist);
 892     Py_DECREF(arglist);
 893     Py_XDECREF(result);
 894     wxPyEndBlockThreads();
 895     return OnSysTell();
 896 }
 897
 898 off_t wxPyCBInputStream::OnSysTell() const {
 899     wxPyBeginBlockThreads();
 900     PyObject* arglist = Py_BuildValue("()");
 901     PyObject* result = PyEval_CallObject(m_tell, arglist);
 902     Py_DECREF(arglist);
 903     off_t o = 0;
 904     if (result != NULL) {
 905         o = PyInt_AsLong(result);
 906         Py_DECREF(result);
 907     };
 908     wxPyEndBlockThreads();
 909     return o;
 910 }
 911
 912 //----------------------------------------------------------------------
 913
 914 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
 915
 916 wxPyCallback::wxPyCallback(PyObject* func) {
 917     m_func = func;
 918     Py_INCREF(m_func);
 919 }
 920
 921 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
 922     m_func = other.m_func;
 923     Py_INCREF(m_func);
 924 }
 925
 926 wxPyCallback::~wxPyCallback() {
 927     wxPyBeginBlockThreads();
 928     Py_DECREF(m_func);
 929     wxPyEndBlockThreads();
 930 }
 931
 932
 933
 934 // This function is used for all events destined for Python event handlers.
 935 void wxPyCallback::EventThunker(wxEvent& event) {
 936     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
 937     PyObject*       func = cb->m_func;
 938     PyObject*       result;
 939     PyObject*       arg;
 940     PyObject*       tuple;
 941
 942
 943     wxPyBeginBlockThreads();
 944     wxString className = event.GetClassInfo()->GetClassName();
 945
 946     if (className == "wxPyEvent")
 947         arg = ((wxPyEvent*)&event)->GetSelf();
 948     else if (className == "wxPyCommandEvent")
 949         arg = ((wxPyCommandEvent*)&event)->GetSelf();
 950     else {
 951         arg = wxPyConstructObject((void*)&event, className);
 952     }
 953
 954     tuple = PyTuple_New(1);
 955     PyTuple_SET_ITEM(tuple, 0, arg);
 956     result = PyEval_CallObject(func, tuple);
 957     Py_DECREF(tuple);
 958     if (result) {
 959         Py_DECREF(result);
 960         PyErr_Clear();       // Just in case...
 961     } else {
 962         PyErr_Print();
 963     }
 964     wxPyEndBlockThreads();
 965 }
 966
 967
 968 //----------------------------------------------------------------------
 969
 970 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
 971       m_lastFound = NULL;
 972       m_self = other.m_self;
 973       m_class = other.m_class;
 974       if (m_self) {
 975           Py_INCREF(m_self);
 976           Py_INCREF(m_class);
 977       }
 978 }
 979
 980
 981 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
 982     m_self = self;
 983     m_class = klass;
 984     m_incRef = incref;
 985     if (incref) {
 986         Py_INCREF(m_self);
 987         Py_INCREF(m_class);
 988     }
 989 }
 990
 991
 992 #if PYTHON_API_VERSION >= 1011
 993
 994 // Prior to Python 2.2 PyMethod_GetClass returned the class object
 995 // in which the method was defined.  Starting with 2.2 it returns
 996 // "class that asked for the method" which seems totally bogus to me
 997 // but apprently it fixes some obscure problem waiting to happen in
 998 // Python.  Since the API was not documented Guido and the gang felt
 999 // safe in changing it.  Needless to say that totally screwed up the
1000 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1001 // code to find the class where the method is actually defined...
1002
1003 static
1004 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1005 {
1006     int i, n;
1007
1008     if (PyType_Check(klass)) {      // new style classes
1009         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1010         // (TODO: This part is not tested yet, so I'm not sure it is correct...)
1011         PyTypeObject* type = (PyTypeObject*)klass;
1012         PyObject *mro, *res, *base, *dict;
1013         /* Look in tp_dict of types in MRO */
1014         mro = type->tp_mro;
1015         assert(PyTuple_Check(mro));
1016         n = PyTuple_GET_SIZE(mro);
1017         for (i = 0; i < n; i++) {
1018             base = PyTuple_GET_ITEM(mro, i);
1019             if (PyClass_Check(base))
1020                 dict = ((PyClassObject *)base)->cl_dict;
1021             else {
1022                 assert(PyType_Check(base));
1023                 dict = ((PyTypeObject *)base)->tp_dict;
1024             }
1025             assert(dict && PyDict_Check(dict));
1026             res = PyDict_GetItem(dict, name);
1027             if (res != NULL)
1028                 return base;
1029         }
1030         return NULL;
1031     }
1032
1033     else if (PyClass_Check(klass)) { // old style classes
1034         // This code is borrowed/adapted from class_lookup in classobject.c
1035         PyClassObject* cp = (PyClassObject*)klass;
1036         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1037         if (value != NULL) {
1038             return (PyObject*)cp;
1039         }
1040         n = PyTuple_Size(cp->cl_bases);
1041         for (i = 0; i < n; i++) {
1042             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1043             PyObject *v = PyFindClassWithAttr(base, name);
1044             if (v != NULL)
1045                 return v;
1046         }
1047         return NULL;
1048     }
1049     return NULL;
1050 }
1051 #endif
1052
1053
1054 static
1055 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
1056 {
1057     PyObject* mgc = PyMethod_GET_CLASS(method);
1058
1059 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1060     return mgc;
1061 #else                             // 2.2 and after, the hard way...
1062
1063     PyObject* nameo = PyString_FromString(name);
1064     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
1065     Py_DECREF(nameo);
1066     return klass;
1067 #endif
1068 }
1069
1070
1071
1072 bool wxPyCallbackHelper::findCallback(const char* name) const {
1073     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1074     self->m_lastFound = NULL;
1075
1076     // If the object (m_self) has an attibute of the given name...
1077     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
1078         PyObject *method, *klass;
1079         method = PyObject_GetAttrString(m_self, (char*)name);
1080
1081         // ...and if that attribute is a method, and if that method's class is
1082         // not from a base class...
1083         if (PyMethod_Check(method) &&
1084             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
1085             ((klass == m_class) || PyClass_IsSubclass(klass, m_class))) {
1086
1087             // ...then we'll save a pointer to the method so callCallback can call it.
1088             self->m_lastFound = method;
1089         }
1090         else {
1091             Py_DECREF(method);
1092         }
1093     }
1094     return m_lastFound != NULL;
1095 }
1096
1097
1098 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1099     PyObject*   result;
1100     int         retval = FALSE;
1101
1102     result = callCallbackObj(argTuple);
1103     if (result) {                       // Assumes an integer return type...
1104         retval = PyInt_AsLong(result);
1105         Py_DECREF(result);
1106         PyErr_Clear();                  // forget about it if it's not...
1107     }
1108     return retval;
1109 }
1110
1111 // Invoke the Python callable object, returning the raw PyObject return
1112 // value.  Caller should DECREF the return value and also call PyEval_SaveThread.
1113 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1114     PyObject* result;
1115
1116     // Save a copy of the pointer in case the callback generates another
1117     // callback.  In that case m_lastFound will have a different value when
1118     // it gets back here...
1119     PyObject* method = m_lastFound;
1120
1121     result = PyEval_CallObject(method, argTuple);
1122     Py_DECREF(argTuple);
1123     Py_DECREF(method);
1124     if (!result) {
1125         PyErr_Print();
1126     }
1127     return result;
1128 }
1129
1130
1131 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1132     cbh.setSelf(self, klass, incref);
1133 }
1134
1135 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
1136     return cbh.findCallback(name);
1137 }
1138
1139 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1140     return cbh.callCallback(argTuple);
1141 }
1142
1143 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1144     return cbh.callCallbackObj(argTuple);
1145 }
1146
1147
1148 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1149     if (cbh->m_incRef) {
1150         wxPyBeginBlockThreads();
1151         Py_XDECREF(cbh->m_self);
1152         Py_XDECREF(cbh->m_class);
1153         wxPyEndBlockThreads();
1154     }
1155 }
1156
1157 //---------------------------------------------------------------------------
1158 //---------------------------------------------------------------------------
1159 // These event classes can be derived from in Python and passed through the event
1160 // system without losing anything.  They do this by keeping a reference to
1161 // themselves and some special case handling in wxPyCallback::EventThunker.
1162
1163
1164 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1165     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1166     //Py_INCREF(m_self);        //      circular loops...
1167     m_cloned = FALSE;
1168 }
1169
1170 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1171     wxPyBeginBlockThreads();
1172     if (m_cloned)
1173         Py_DECREF(m_self);
1174     wxPyEndBlockThreads();
1175 }
1176
1177 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1178     wxPyBeginBlockThreads();
1179     if (m_cloned)
1180         Py_DECREF(m_self);
1181     m_self = self;
1182     if (clone) {
1183         Py_INCREF(m_self);
1184         m_cloned = TRUE;
1185     }
1186     wxPyEndBlockThreads();
1187 }
1188
1189 PyObject* wxPyEvtSelfRef::GetSelf() const {
1190     Py_INCREF(m_self);
1191     return m_self;
1192 }
1193
1194
1195 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1196 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1197
1198
1199 wxPyEvent::wxPyEvent(int id)
1200     : wxEvent(id) {
1201 }
1202
1203
1204 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1205     : wxEvent(evt)
1206 {
1207     SetSelf(evt.m_self, TRUE);
1208 }
1209
1210
1211 wxPyEvent::~wxPyEvent() {
1212 }
1213
1214
1215 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1216     : wxCommandEvent(commandType, id) {
1217 }
1218
1219
1220 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1221     : wxCommandEvent(evt)
1222 {
1223     SetSelf(evt.m_self, TRUE);
1224 }
1225
1226
1227 wxPyCommandEvent::~wxPyCommandEvent() {
1228 }
1229
1230
1231
1232
1233 //---------------------------------------------------------------------------
1234 //---------------------------------------------------------------------------
1235
1236
1237 wxPyTimer::wxPyTimer(PyObject* callback) {
1238     func = callback;
1239     Py_INCREF(func);
1240 }
1241
1242 wxPyTimer::~wxPyTimer() {
1243     wxPyBeginBlockThreads();
1244     Py_DECREF(func);
1245     wxPyEndBlockThreads();
1246 }
1247
1248 void wxPyTimer::Notify() {
1249     if (!func || func == Py_None) {
1250         wxTimer::Notify();
1251     }
1252     else {
1253         wxPyBeginBlockThreads();
1254
1255         PyObject*   result;
1256         PyObject*   args = Py_BuildValue("()");
1257
1258         result = PyEval_CallObject(func, args);
1259         Py_DECREF(args);
1260         if (result) {
1261             Py_DECREF(result);
1262             PyErr_Clear();
1263         } else {
1264             PyErr_Print();
1265         }
1266
1267         wxPyEndBlockThreads();
1268     }
1269 }
1270
1271
1272
1273 //---------------------------------------------------------------------------
1274 //---------------------------------------------------------------------------
1275 // Convert a wxList to a Python List
1276
1277 PyObject* wxPy_ConvertList(wxListBase* list, const char* className) {
1278     PyObject*   pyList;
1279     PyObject*   pyObj;
1280     wxObject*   wxObj;
1281     wxNode*     node = list->First();
1282
1283     wxPyBeginBlockThreads();
1284     pyList = PyList_New(0);
1285     while (node) {
1286         wxObj = node->Data();
1287         pyObj = wxPyMake_wxObject(wxObj); //wxPyConstructObject(wxObj, className);
1288         PyList_Append(pyList, pyObj);
1289         node = node->Next();
1290     }
1291     wxPyEndBlockThreads();
1292     return pyList;
1293 }
1294
1295 //----------------------------------------------------------------------
1296
1297 long wxPyGetWinHandle(wxWindow* win) {
1298 #ifdef __WXMSW__
1299     return (long)win->GetHandle();
1300 #endif
1301
1302     // Find and return the actual X-Window.
1303 #ifdef __WXGTK__
1304     if (win->m_wxwindow) {
1305         GdkWindowPrivate* bwin = (GdkWindowPrivate*)GTK_PIZZA(win->m_wxwindow)->bin_window;
1306         if (bwin) {
1307             return (long)bwin->xwindow;
1308         }
1309     }
1310 #endif
1311     return 0;
1312 }
1313
1314 //----------------------------------------------------------------------
1315 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1316 // included in every file over and over again...
1317
1318 #if PYTHON_API_VERSION >= 1009
1319     static char* wxStringErrorMsg = "String or Unicode type required";
1320 #else
1321     static char* wxStringErrorMsg = "String type required";
1322 #endif
1323
1324
1325 wxString* wxString_in_helper(PyObject* source) {
1326     wxString* target;
1327 #if PYTHON_API_VERSION >= 1009  // Have Python unicode API
1328     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1329         PyErr_SetString(PyExc_TypeError, wxStringErrorMsg);
1330         return NULL;
1331     }
1332 #if wxUSE_UNICODE
1333     if (PyUnicode_Check(source)) {
1334         target = new wxString(PyUnicode_AS_UNICODE(source));
1335     } else {
1336         // It is a string, get pointers to it and transform to unicode
1337         char* tmpPtr; int tmpSize;
1338         PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1339         target = new wxString(tmpPtr, *wxConvCurrent, tmpSize);
1340     }
1341 #else
1342     char* tmpPtr; int tmpSize;
1343     if (PyString_AsStringAndSize(source, &tmpPtr, &tmpSize) == -1) {
1344         PyErr_SetString(PyExc_TypeError, "Unable to convert string");
1345         return NULL;
1346     }
1347     target = new wxString(tmpPtr, tmpSize);
1348 #endif // wxUSE_UNICODE
1349
1350 #else  // No Python unicode API (1.5.2)
1351     if (!PyString_Check(source)) {
1352         PyErr_SetString(PyExc_TypeError, wxStringErrorMsg);
1353         return NULL;
1354     }
1355     target = new wxString(PyString_AS_STRING(source), PyString_GET_SIZE(source));
1356 #endif
1357     return target;
1358 }
1359
1360
1361 // Similar to above except doesn't use "new" and doesn't set an exception
1362 wxString Py2wxString(PyObject* source)
1363 {
1364     wxString target;
1365     bool     doDecRef = FALSE;
1366
1367 #if PYTHON_API_VERSION >= 1009  // Have Python unicode API
1368     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1369         // Convert to String if not one already...  (TODO: Unicode too?)
1370         source = PyObject_Str(source);
1371         doDecRef = TRUE;
1372     }
1373
1374 #if wxUSE_UNICODE
1375     if (PyUnicode_Check(source)) {
1376         target = PyUnicode_AS_UNICODE(source);
1377     } else {
1378         // It is a string, get pointers to it and transform to unicode
1379         char* tmpPtr; int tmpSize;
1380         PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1381         target = wxString(tmpPtr, *wxConvCurrent, tmpSize);
1382     }
1383 #else
1384     char* tmpPtr; int tmpSize;
1385     PyString_AsStringAndSize(source, &tmpPtr, &tmpSize);
1386     target = wxString(tmpPtr, tmpSize);
1387 #endif // wxUSE_UNICODE
1388
1389 #else  // No Python unicode API (1.5.2)
1390     if (!PyString_Check(source)) {
1391         // Convert to String if not one already...
1392         source = PyObject_Str(source);
1393         doDecRef = TRUE;
1394     }
1395     target = wxString(PyString_AS_STRING(source), PyString_GET_SIZE(source));
1396 #endif
1397
1398     if (doDecRef)
1399         Py_DECREF(source);
1400     return target;
1401 }
1402
1403
1404 // Make either a Python String or Unicode object, depending on build mode
1405 PyObject* wx2PyString(const wxString& src)
1406 {
1407     PyObject* str;
1408 #if wxUSE_UNICODE
1409     str = PyUnicode_FromUnicode(src.c_str(), src.Len());
1410 #else
1411     str = PyString_FromStringAndSize(src.c_str(), src.Len());
1412 #endif
1413     return str;
1414 }
1415
1416
1417 //----------------------------------------------------------------------
1418
1419
1420 byte* byte_LIST_helper(PyObject* source) {
1421     if (!PyList_Check(source)) {
1422         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1423         return NULL;
1424     }
1425     int count = PyList_Size(source);
1426     byte* temp = new byte[count];
1427     if (! temp) {
1428         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1429         return NULL;
1430     }
1431     for (int x=0; x<count; x++) {
1432         PyObject* o = PyList_GetItem(source, x);
1433         if (! PyInt_Check(o)) {
1434             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1435             return NULL;
1436         }
1437         temp[x] = (byte)PyInt_AsLong(o);
1438     }
1439     return temp;
1440 }
1441
1442
1443 int* int_LIST_helper(PyObject* source) {
1444     if (!PyList_Check(source)) {
1445         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1446         return NULL;
1447     }
1448     int count = PyList_Size(source);
1449     int* temp = new int[count];
1450     if (! temp) {
1451         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1452         return NULL;
1453     }
1454     for (int x=0; x<count; x++) {
1455         PyObject* o = PyList_GetItem(source, x);
1456         if (! PyInt_Check(o)) {
1457             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1458             return NULL;
1459         }
1460         temp[x] = PyInt_AsLong(o);
1461     }
1462     return temp;
1463 }
1464
1465
1466 long* long_LIST_helper(PyObject* source) {
1467     if (!PyList_Check(source)) {
1468         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1469         return NULL;
1470     }
1471     int count = PyList_Size(source);
1472     long* temp = new long[count];
1473     if (! temp) {
1474         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1475         return NULL;
1476     }
1477     for (int x=0; x<count; x++) {
1478         PyObject* o = PyList_GetItem(source, x);
1479         if (! PyInt_Check(o)) {
1480             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
1481             return NULL;
1482         }
1483         temp[x] = PyInt_AsLong(o);
1484     }
1485     return temp;
1486 }
1487
1488
1489 char** string_LIST_helper(PyObject* source) {
1490     if (!PyList_Check(source)) {
1491         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1492         return NULL;
1493     }
1494     int count = PyList_Size(source);
1495     char** temp = new char*[count];
1496     if (! temp) {
1497         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1498         return NULL;
1499     }
1500     for (int x=0; x<count; x++) {
1501         PyObject* o = PyList_GetItem(source, x);
1502         if (! PyString_Check(o)) {
1503             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
1504             return NULL;
1505         }
1506         temp[x] = PyString_AsString(o);
1507     }
1508     return temp;
1509 }
1510
1511 //--------------------------------
1512 // Part of patch from Tim Hochberg
1513 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
1514     if (PyInt_Check(o1) && PyInt_Check(o2)) {
1515         point->x = PyInt_AS_LONG(o1);
1516         point->y = PyInt_AS_LONG(o2);
1517         return true;
1518     }
1519     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
1520         point->x = (int)PyFloat_AS_DOUBLE(o1);
1521         point->y = (int)PyFloat_AS_DOUBLE(o2);
1522         return true;
1523     }
1524     if (PyInstance_Check(o1) || PyInstance_Check(o2)) {
1525         // Disallow instances because they can cause havok
1526         return false;
1527     }
1528     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
1529         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
1530         point->x = PyInt_AsLong(o1);
1531         point->y = PyInt_AsLong(o2);
1532         return true;
1533     }
1534     return false;
1535 }
1536
1537
1538 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
1539     // Putting all of the declarations here allows
1540     // us to put the error handling all in one place.
1541     int x;
1542     wxPoint* temp;
1543     PyObject *o, *o1, *o2;
1544     bool isFast = PyList_Check(source) || PyTuple_Check(source);
1545
1546     if (!PySequence_Check(source)) {
1547         goto error0;
1548     }
1549
1550     // The length of the sequence is returned in count.
1551     *count = PySequence_Length(source);
1552     if (*count < 0) {
1553         goto error0;
1554     }
1555
1556     temp = new wxPoint[*count];
1557     if (!temp) {
1558         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1559         return NULL;
1560     }
1561     for (x=0; x<*count; x++) {
1562         // Get an item: try fast way first.
1563         if (isFast) {
1564             o = PySequence_Fast_GET_ITEM(source, x);
1565         }
1566         else {
1567             o = PySequence_GetItem(source, x);
1568             if (o == NULL) {
1569                 goto error1;
1570             }
1571         }
1572
1573         // Convert o to wxPoint.
1574         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
1575             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
1576             o1 = PySequence_Fast_GET_ITEM(o, 0);
1577             o2 = PySequence_Fast_GET_ITEM(o, 1);
1578             if (!wxPointFromObjects(o1, o2, &temp[x])) {
1579                 goto error2;
1580             }
1581         }
1582         else if (PyInstance_Check(o)) {
1583             wxPoint* pt;
1584             if (SWIG_GetPtrObj(o, (void **)&pt, "_wxPoint_p")) {
1585                 goto error2;
1586             }
1587             temp[x] = *pt;
1588         }
1589         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
1590             o1 = PySequence_GetItem(o, 0);
1591             o2 = PySequence_GetItem(o, 1);
1592             if (!wxPointFromObjects(o1, o2, &temp[x])) {
1593                 goto error3;
1594             }
1595             Py_DECREF(o1);
1596             Py_DECREF(o2);
1597         }
1598         else {
1599             goto error2;
1600         }
1601         // Clean up.
1602         if (!isFast)
1603             Py_DECREF(o);
1604     }
1605     return temp;
1606
1607 error3:
1608     Py_DECREF(o1);
1609     Py_DECREF(o2);
1610 error2:
1611     if (!isFast)
1612         Py_DECREF(o);
1613 error1:
1614     delete temp;
1615 error0:
1616     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
1617     return NULL;
1618 }
1619 // end of patch
1620 //------------------------------
1621
1622
1623 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
1624     if (!PyList_Check(source)) {
1625         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1626         return NULL;
1627     }
1628     int count = PyList_Size(source);
1629     wxBitmap** temp = new wxBitmap*[count];
1630     if (! temp) {
1631         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1632         return NULL;
1633     }
1634     for (int x=0; x<count; x++) {
1635         PyObject* o = PyList_GetItem(source, x);
1636         if (PyInstance_Check(o)) {
1637             wxBitmap*    pt;
1638             if (SWIG_GetPtrObj(o, (void **) &pt,"_wxBitmap_p")) {
1639                 PyErr_SetString(PyExc_TypeError,"Expected _wxBitmap_p.");
1640                 return NULL;
1641             }
1642             temp[x] = pt;
1643         }
1644         else {
1645             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
1646             return NULL;
1647         }
1648     }
1649     return temp;
1650 }
1651
1652
1653
1654 wxString* wxString_LIST_helper(PyObject* source) {
1655     if (!PyList_Check(source)) {
1656         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1657         return NULL;
1658     }
1659     int count = PyList_Size(source);
1660     wxString* temp = new wxString[count];
1661     if (! temp) {
1662         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1663         return NULL;
1664     }
1665     for (int x=0; x<count; x++) {
1666         PyObject* o = PyList_GetItem(source, x);
1667 #if PYTHON_API_VERSION >= 1009
1668         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
1669             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
1670             return NULL;
1671         }
1672 #else
1673         if (! PyString_Check(o)) {
1674             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
1675             return NULL;
1676         }
1677 #endif
1678
1679         wxString* pStr = wxString_in_helper(o);
1680         temp[x] = *pStr;
1681         delete pStr;
1682     }
1683     return temp;
1684 }
1685
1686
1687 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
1688     if (!PyList_Check(source)) {
1689         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1690         return NULL;
1691     }
1692     int count                = PyList_Size(source);
1693     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
1694     if (! temp) {
1695         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1696         return NULL;
1697     }
1698     for (int x=0; x<count; x++) {
1699         PyObject* o = PyList_GetItem(source, x);
1700         if (PyInstance_Check(o)) {
1701             wxAcceleratorEntry* ae;
1702             if (SWIG_GetPtrObj(o, (void **) &ae,"_wxAcceleratorEntry_p")) {
1703                 PyErr_SetString(PyExc_TypeError,"Expected _wxAcceleratorEntry_p.");
1704                 return NULL;
1705             }
1706             temp[x] = *ae;
1707         }
1708         else if (PyTuple_Check(o)) {
1709             PyObject* o1 = PyTuple_GetItem(o, 0);
1710             PyObject* o2 = PyTuple_GetItem(o, 1);
1711             PyObject* o3 = PyTuple_GetItem(o, 2);
1712             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
1713         }
1714         else {
1715             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
1716             return NULL;
1717         }
1718     }
1719     return temp;
1720 }
1721
1722
1723 wxPen** wxPen_LIST_helper(PyObject* source) {
1724     if (!PyList_Check(source)) {
1725         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1726         return NULL;
1727     }
1728     int count = PyList_Size(source);
1729     wxPen** temp = new wxPen*[count];
1730     if (!temp) {
1731         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1732         return NULL;
1733     }
1734     for (int x=0; x<count; x++) {
1735         PyObject* o = PyList_GetItem(source, x);
1736         if (PyInstance_Check(o)) {
1737             wxPen*  pt;
1738             if (SWIG_GetPtrObj(o, (void **) &pt,"_wxPen_p")) {
1739                 delete temp;
1740                 PyErr_SetString(PyExc_TypeError,"Expected _wxPen_p.");
1741                 return NULL;
1742             }
1743             temp[x] = pt;
1744         }
1745         else {
1746             delete temp;
1747             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
1748             return NULL;
1749         }
1750     }
1751     return temp;
1752 }
1753
1754
1755 bool _2int_seq_helper(PyObject* source, int* i1, int* i2) {
1756     bool isFast = PyList_Check(source) || PyTuple_Check(source);
1757     PyObject *o1, *o2;
1758
1759     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
1760         return FALSE;
1761
1762     if (isFast) {
1763         o1 = PySequence_Fast_GET_ITEM(source, 0);
1764         o2 = PySequence_Fast_GET_ITEM(source, 1);
1765     }
1766     else {
1767         o1 = PySequence_GetItem(source, 0);
1768         o2 = PySequence_GetItem(source, 1);
1769     }
1770
1771     *i1 = PyInt_AsLong(o1);
1772     *i2 = PyInt_AsLong(o2);
1773
1774     if (! isFast) {
1775         Py_DECREF(o1);
1776         Py_DECREF(o2);
1777     }
1778     return TRUE;
1779 }
1780
1781
1782 bool _4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
1783     bool isFast = PyList_Check(source) || PyTuple_Check(source);
1784     PyObject *o1, *o2, *o3, *o4;
1785
1786     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
1787         return FALSE;
1788
1789     if (isFast) {
1790         o1 = PySequence_Fast_GET_ITEM(source, 0);
1791         o2 = PySequence_Fast_GET_ITEM(source, 1);
1792         o3 = PySequence_Fast_GET_ITEM(source, 2);
1793         o4 = PySequence_Fast_GET_ITEM(source, 3);
1794     }
1795     else {
1796         o1 = PySequence_GetItem(source, 0);
1797         o2 = PySequence_GetItem(source, 1);
1798         o3 = PySequence_GetItem(source, 2);
1799         o4 = PySequence_GetItem(source, 3);
1800     }
1801
1802     *i1 = PyInt_AsLong(o1);
1803     *i2 = PyInt_AsLong(o2);
1804     *i3 = PyInt_AsLong(o3);
1805     *i4 = PyInt_AsLong(o4);
1806
1807     if (! isFast) {
1808         Py_DECREF(o1);
1809         Py_DECREF(o2);
1810         Py_DECREF(o3);
1811         Py_DECREF(o4);
1812     }
1813     return TRUE;
1814 }
1815
1816
1817 //----------------------------------------------------------------------
1818
1819 bool wxSize_helper(PyObject* source, wxSize** obj) {
1820
1821     // If source is an object instance then it may already be the right type
1822     if (PyInstance_Check(source)) {
1823         wxSize* ptr;
1824         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxSize_p"))
1825             goto error;
1826         *obj = ptr;
1827         return TRUE;
1828     }
1829     // otherwise a 2-tuple of integers is expected
1830     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
1831         PyObject* o1 = PySequence_GetItem(source, 0);
1832         PyObject* o2 = PySequence_GetItem(source, 1);
1833         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
1834             Py_DECREF(o1);
1835             Py_DECREF(o2);
1836             goto error;
1837         }
1838         **obj = wxSize(PyInt_AsLong(o1), PyInt_AsLong(o2));
1839         Py_DECREF(o1);
1840         Py_DECREF(o2);
1841         return TRUE;
1842     }
1843
1844  error:
1845     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of integers or a wxSize object.");
1846     return FALSE;
1847 }
1848
1849 bool wxPoint_helper(PyObject* source, wxPoint** obj) {
1850
1851     // If source is an object instance then it may already be the right type
1852     if (PyInstance_Check(source)) {
1853         wxPoint* ptr;
1854         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxPoint_p"))
1855             goto error;
1856         *obj = ptr;
1857         return TRUE;
1858     }
1859     // otherwise a length-2 sequence of integers is expected
1860     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
1861         PyObject* o1 = PySequence_GetItem(source, 0);
1862         PyObject* o2 = PySequence_GetItem(source, 1);
1863         // This should really check for integers, not numbers -- but that would break code.
1864         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
1865             Py_DECREF(o1);
1866             Py_DECREF(o2);
1867             goto error;
1868         }
1869         **obj = wxPoint(PyInt_AsLong(o1), PyInt_AsLong(o2));
1870         Py_DECREF(o1);
1871         Py_DECREF(o2);
1872         return TRUE;
1873     }
1874  error:
1875     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of integers or a wxPoint object.");
1876     return FALSE;
1877 }
1878
1879
1880
1881 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
1882
1883     // If source is an object instance then it may already be the right type
1884     if (PyInstance_Check(source)) {
1885         wxRealPoint* ptr;
1886         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxRealPoint_p"))
1887             goto error;
1888         *obj = ptr;
1889         return TRUE;
1890     }
1891     // otherwise a 2-tuple of floats is expected
1892     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
1893         PyObject* o1 = PySequence_GetItem(source, 0);
1894         PyObject* o2 = PySequence_GetItem(source, 1);
1895         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
1896             Py_DECREF(o1);
1897             Py_DECREF(o2);
1898             goto error;
1899         }
1900         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
1901         Py_DECREF(o1);
1902         Py_DECREF(o2);
1903         return TRUE;
1904     }
1905
1906  error:
1907     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
1908     return FALSE;
1909 }
1910
1911
1912
1913
1914 bool wxRect_helper(PyObject* source, wxRect** obj) {
1915
1916     // If source is an object instance then it may already be the right type
1917     if (PyInstance_Check(source)) {
1918         wxRect* ptr;
1919         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxRect_p"))
1920             goto error;
1921         *obj = ptr;
1922         return TRUE;
1923     }
1924     // otherwise a 4-tuple of integers is expected
1925     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
1926         PyObject* o1 = PySequence_GetItem(source, 0);
1927         PyObject* o2 = PySequence_GetItem(source, 1);
1928         PyObject* o3 = PySequence_GetItem(source, 2);
1929         PyObject* o4 = PySequence_GetItem(source, 3);
1930         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
1931             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
1932             Py_DECREF(o1);
1933             Py_DECREF(o2);
1934             Py_DECREF(o3);
1935             Py_DECREF(o4);
1936             goto error;
1937         }
1938         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
1939                        PyInt_AsLong(o3), PyInt_AsLong(o4));
1940         Py_DECREF(o1);
1941         Py_DECREF(o2);
1942         Py_DECREF(o3);
1943         Py_DECREF(o4);
1944         return TRUE;
1945     }
1946
1947  error:
1948     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
1949     return FALSE;
1950 }
1951
1952
1953
1954 bool wxColour_helper(PyObject* source, wxColour** obj) {
1955
1956     // If source is an object instance then it may already be the right type
1957     if (PyInstance_Check(source)) {
1958         wxColour* ptr;
1959         if (SWIG_GetPtrObj(source, (void **)&ptr, "_wxColour_p"))
1960             goto error;
1961         *obj = ptr;
1962         return TRUE;
1963     }
1964     // otherwise a string is expected
1965     else if (PyString_Check(source)) {
1966         wxString spec(PyString_AS_STRING(source), *wxConvCurrent);
1967         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
1968             long red, green, blue;
1969             red = green = blue = 0;
1970             spec.Mid(1,2).ToLong(&red,   16);
1971             spec.Mid(3,2).ToLong(&green, 16);
1972             spec.Mid(5,2).ToLong(&blue,  16);
1973
1974             **obj = wxColour(red, green, blue);
1975             return TRUE;
1976         }
1977         else {                                       // it's a colour name
1978             **obj = wxColour(spec);
1979             return TRUE;
1980         }
1981     }
1982
1983  error:
1984     PyErr_SetString(PyExc_TypeError,
1985                     "Expected a wxColour object or a string containing a colour "
1986                     "name or '#RRGGBB'.");
1987     return FALSE;
1988 }
1989
1990
1991 //----------------------------------------------------------------------
1992
1993 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
1994
1995     PyObject* list = PyList_New(0);
1996     for (size_t i=0; i < arr.GetCount(); i++) {
1997 #if wxUSE_UNICODE
1998         PyObject* str = PyUnicode_FromUnicode(arr[i].c_str(), arr[i].Len());
1999 #else
2000         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2001 #endif
2002         PyList_Append(list, str);
2003         Py_DECREF(str);
2004     }
2005     return list;
2006 }
2007
2008
2009 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2010
2011     PyObject* list = PyList_New(0);
2012     for (size_t i=0; i < arr.GetCount(); i++) {
2013         PyObject* number = PyInt_FromLong(arr[i]);
2014         PyList_Append(list, number);
2015         Py_DECREF(number);
2016     }
2017     return list;
2018 }
2019
2020
2021 //----------------------------------------------------------------------
2022 //----------------------------------------------------------------------
2023
2024
2025
2026