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