wxPython/src/helpers.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpers.cpp
   3 // Purpose:     Helper functions/classes for the wxPython extension module
   4 //
   5 // Author:      Robin Dunn
   6 //
   7 // Created:     1-July-1997
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13
  14 #undef DEBUG
  15 #include <Python.h>
  16 #include "wx/wxPython/wxPython_int.h"
  17 #include "wx/wxPython/pyistream.h"
  18
  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 <gdk/gdk.h>
  27 #include <gdk/gdkx.h>
  28 #include <gtk/gtk.h>
  29 #include <gdk/gdkprivate.h>
  30 #include <wx/gtk/win_gtk.h>
  31 #define GetXWindow(wxwin) (wxwin)->m_wxwindow ? \
  32                               GDK_WINDOW_XWINDOW(GTK_PIZZA((wxwin)->m_wxwindow)->bin_window) : \
  33                               GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
  34 #include <locale.h>
  35 #endif
  36
  37 #ifdef __WXX11__
  38 #include "wx/x11/privx.h"
  39 #define GetXWindow(wxwin)   ((Window)(wxwin)->GetHandle())
  40 #endif
  41
  42 #ifdef __WXMAC__
  43 #include <wx/mac/private.h>
  44 #endif
  45
  46 #include <wx/clipbrd.h>
  47 #include <wx/mimetype.h>
  48 #include <wx/image.h>
  49
  50 //----------------------------------------------------------------------
  51
  52 #if PYTHON_API_VERSION < 1009 && wxUSE_UNICODE
  53 #error Python must support Unicode to use wxWindows Unicode
  54 #endif
  55
  56 //----------------------------------------------------------------------
  57
  58 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  59 bool wxPyDoCleanup = false;
  60 bool wxPyDoingCleanup = false;
  61
  62
  63 #ifdef WXP_WITH_THREAD
  64 struct wxPyThreadState {
  65     unsigned long  tid;
  66     PyThreadState* tstate;
  67
  68     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  69         : tid(_tid), tstate(_tstate) {}
  70 };
  71
  72 #include <wx/dynarray.h>
  73 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  74 #include <wx/arrimpl.cpp>
  75 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  76
  77 wxPyThreadStateArray* wxPyTStates = NULL;
  78 wxMutex*              wxPyTMutex = NULL;
  79 #endif
  80
  81 #define DEFAULTENCODING_SIZE 64
  82 static char wxPyDefaultEncoding[DEFAULTENCODING_SIZE] = "ascii";
  83
  84 static PyObject* wxPython_dict = NULL;
  85 static PyObject* wxPyAssertionError = NULL;
  86 static PyObject* wxPyNoAppError = NULL;
  87
  88 PyObject* wxPyPtrTypeMap = NULL;
  89
  90
  91 #ifdef __WXMSW__             // If building for win32...
  92 //----------------------------------------------------------------------
  93 // This gets run when the DLL is loaded.  We just need to save a handle.
  94 //----------------------------------------------------------------------
  95
  96 BOOL WINAPI DllMain(
  97     HINSTANCE   hinstDLL,    // handle to DLL module
  98     DWORD       fdwReason,   // reason for calling function
  99     LPVOID      lpvReserved  // reserved
 100    )
 101 {
 102     // If wxPython is embedded in another wxWindows app then
 103     // the inatance has already been set.
 104     if (! wxGetInstance())
 105         wxSetInstance(hinstDLL);
 106     return true;
 107 }
 108 #endif
 109
 110 //----------------------------------------------------------------------
 111 // Classes for implementing the wxp main application shell.
 112 //----------------------------------------------------------------------
 113
 114 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 115
 116
 117 wxPyApp::wxPyApp() {
 118     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 119     m_startupComplete = false;
 120 }
 121
 122
 123 wxPyApp::~wxPyApp() {
 124 }
 125
 126
 127 // This one isn't acutally called...  We fake it with _BootstrapApp
 128 bool wxPyApp::OnInit() {
 129     return false;
 130 }
 131
 132
 133 int  wxPyApp::MainLoop() {
 134     int retval = 0;
 135
 136     DeletePendingObjects();
 137     bool initialized = wxTopLevelWindows.GetCount() != 0;
 138     if (initialized) {
 139         if ( m_exitOnFrameDelete == Later ) {
 140             m_exitOnFrameDelete = Yes;
 141         }
 142
 143         retval = wxApp::MainLoop();
 144         OnExit();
 145     }
 146     return retval;
 147 }
 148
 149
 150 bool wxPyApp::OnInitGui() {
 151     bool rval=true;
 152     wxApp::OnInitGui();  // in this case always call the base class version
 153     bool blocked = wxPyBeginBlockThreads();
 154     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 155         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 156     wxPyEndBlockThreads(blocked);
 157     return rval;
 158 }
 159
 160
 161 int wxPyApp::OnExit() {
 162     int rval=0;
 163     bool blocked = wxPyBeginBlockThreads();
 164     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 165         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 166     wxPyEndBlockThreads(blocked);
 167     wxApp::OnExit();  // in this case always call the base class version
 168     return rval;
 169 }
 170
 171
 172 #ifdef __WXDEBUG__
 173 void wxPyApp::OnAssert(const wxChar *file,
 174                      int line,
 175                      const wxChar *cond,
 176                      const wxChar *msg) {
 177
 178     // if we're not fully initialized then just log the error
 179     if (! m_startupComplete) {
 180         wxString buf;
 181         buf.Alloc(4096);
 182         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 183                    file, line, cond);
 184         if (msg != NULL) {
 185             buf += wxT(": ");
 186             buf += msg;
 187         }
 188         wxLogDebug(buf);
 189         return;
 190     }
 191
 192     // If the OnAssert is overloaded in the Python class then call it...
 193     bool found;
 194     bool blocked = wxPyBeginBlockThreads();
 195     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 196         PyObject* fso = wx2PyString(file);
 197         PyObject* cso = wx2PyString(file);
 198         PyObject* mso;
 199         if (msg != NULL)
 200             mso = wx2PyString(file);
 201         else {
 202             mso = Py_None; Py_INCREF(Py_None);
 203         }
 204         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 205         Py_DECREF(fso);
 206         Py_DECREF(cso);
 207         Py_DECREF(mso);
 208     }
 209     wxPyEndBlockThreads(blocked);
 210
 211     // ...otherwise do our own thing with it
 212     if (! found) {
 213         // ignore it?
 214         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 215             return;
 216
 217         // turn it into a Python exception?
 218         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 219             wxString buf;
 220             buf.Alloc(4096);
 221             buf.Printf(wxT("C++ assertion \"%s\" failed in %s(%d)"), cond, file, line);
 222             if (msg != NULL) {
 223                 buf += wxT(": ");
 224                 buf += msg;
 225             }
 226
 227             // set the exception
 228             bool blocked = wxPyBeginBlockThreads();
 229             PyObject* s = wx2PyString(buf);
 230             PyErr_SetObject(wxPyAssertionError, s);
 231             Py_DECREF(s);
 232             wxPyEndBlockThreads(blocked);
 233
 234             // Now when control returns to whatever API wrapper was called from
 235             // Python it should detect that an exception is set and will return
 236             // NULL, signalling the exception to Python.
 237         }
 238
 239         // Send it to the normal log destination, but only if
 240         // not _DIALOG because it will call this too
 241         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 242             wxString buf;
 243             buf.Alloc(4096);
 244             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 245                        file, line, cond);
 246             if (msg != NULL) {
 247                 buf += wxT(": ");
 248                 buf += msg;
 249             }
 250             wxLogDebug(buf);
 251         }
 252
 253         // do the normal wx assert dialog?
 254         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 255             wxApp::OnAssert(file, line, cond, msg);
 256     }
 257 }
 258 #endif
 259
 260     // For catching Apple Events
 261 void wxPyApp::MacOpenFile(const wxString &fileName)
 262 {
 263     bool blocked = wxPyBeginBlockThreads();
 264     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 265         PyObject* s = wx2PyString(fileName);
 266         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 267         Py_DECREF(s);
 268     }
 269     wxPyEndBlockThreads(blocked);
 270 }
 271
 272 void wxPyApp::MacPrintFile(const wxString &fileName)
 273 {
 274     bool blocked = wxPyBeginBlockThreads();
 275     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 276         PyObject* s = wx2PyString(fileName);
 277         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 278         Py_DECREF(s);
 279     }
 280     wxPyEndBlockThreads(blocked);
 281 }
 282
 283 void wxPyApp::MacNewFile()
 284 {
 285     bool blocked = wxPyBeginBlockThreads();
 286     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 287         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 288     wxPyEndBlockThreads(blocked);
 289 }
 290
 291 void wxPyApp::MacReopenApp()
 292 {
 293     bool blocked = wxPyBeginBlockThreads();
 294     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 295         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 296     wxPyEndBlockThreads(blocked);
 297 }
 298
 299
 300 /*static*/
 301 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 302 #ifdef __WXMAC__
 303     return s_macSupportPCMenuShortcuts;
 304 #else
 305     return 0;
 306 #endif
 307 }
 308
 309 /*static*/
 310 long wxPyApp::GetMacAboutMenuItemId() {
 311 #ifdef __WXMAC__
 312     return s_macAboutMenuItemId;
 313 #else
 314     return 0;
 315 #endif
 316 }
 317
 318 /*static*/
 319 long wxPyApp::GetMacPreferencesMenuItemId() {
 320 #ifdef __WXMAC__
 321     return s_macPreferencesMenuItemId;
 322 #else
 323     return 0;
 324 #endif
 325 }
 326
 327 /*static*/
 328 long wxPyApp::GetMacExitMenuItemId() {
 329 #ifdef __WXMAC__
 330     return s_macExitMenuItemId;
 331 #else
 332     return 0;
 333 #endif
 334 }
 335
 336 /*static*/
 337 wxString wxPyApp::GetMacHelpMenuTitleName() {
 338 #ifdef __WXMAC__
 339     return s_macHelpMenuTitleName;
 340 #else
 341     return wxEmptyString;
 342 #endif
 343 }
 344
 345 /*static*/
 346 void wxPyApp::SetMacSupportPCMenuShortcuts(bool val) {
 347 #ifdef __WXMAC__
 348     s_macSupportPCMenuShortcuts = val;
 349 #endif
 350 }
 351
 352 /*static*/
 353 void wxPyApp::SetMacAboutMenuItemId(long val) {
 354 #ifdef __WXMAC__
 355     s_macAboutMenuItemId = val;
 356 #endif
 357 }
 358
 359 /*static*/
 360 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 361 #ifdef __WXMAC__
 362     s_macPreferencesMenuItemId = val;
 363 #endif
 364 }
 365
 366 /*static*/
 367 void wxPyApp::SetMacExitMenuItemId(long val) {
 368 #ifdef __WXMAC__
 369     s_macExitMenuItemId = val;
 370 #endif
 371 }
 372
 373 /*static*/
 374 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 375 #ifdef __WXMAC__
 376     s_macHelpMenuTitleName = val;
 377 #endif
 378 }
 379
 380
 381 // This finishes the initialization of wxWindows and then calls the OnInit
 382 // that should be present in the derived (Python) class.
 383 void wxPyApp::_BootstrapApp()
 384 {
 385     static      bool haveInitialized = false;
 386     bool        result, blocked;
 387     PyObject*   retval = NULL;
 388     PyObject*   pyint  = NULL;
 389
 390
 391     // Only initialize wxWidgets once
 392     if (! haveInitialized) {
 393
 394         // Get any command-line args passed to this program from the sys module
 395         int    argc = 0;
 396         char** argv = NULL;
 397         blocked = wxPyBeginBlockThreads();
 398         PyObject* sysargv = PySys_GetObject("argv");
 399         if (sysargv != NULL) {
 400             argc = PyList_Size(sysargv);
 401             argv = new char*[argc+1];
 402             int x;
 403             for(x=0; x<argc; x++) {
 404                 PyObject *pyArg = PyList_GetItem(sysargv, x);
 405                 argv[x] = PyString_AsString(pyArg);
 406             }
 407             argv[argc] = NULL;
 408         }
 409         wxPyEndBlockThreads(blocked);
 410
 411         // Initialize wxWidgets
 412         result = wxEntryStart(argc, argv);
 413         delete [] argv;
 414
 415         blocked = wxPyBeginBlockThreads();
 416         if (! result)  {
 417             PyErr_SetString(PyExc_SystemError,
 418                             "wxEntryStart failed, unable to initialize wxWidgets!"
 419 #ifdef __WXGTK__
 420                             "  (Is DISPLAY set properly?)"
 421 #endif
 422                 );
 423             goto error;
 424         }
 425
 426         // On wxGTK the locale will be changed to match the system settings,
 427         // but Python before 2.4 needs to have LC_NUMERIC set to "C" in order
 428         // for the floating point conversions and such to work right.
 429 #if defined(__WXGTK__) && PY_VERSION_HEX < 0x02040000
 430         setlocale(LC_NUMERIC, "C");
 431 #endif
 432
 433         // The stock objects were all NULL when they were loaded into
 434         // SWIG generated proxies, so re-init those now...
 435         wxPy_ReinitStockObjects(3);
 436
 437         wxPyEndBlockThreads(blocked);
 438         haveInitialized = true;
 439     }
 440
 441     // It's now ok to generate exceptions for assertion errors.
 442     wxPythonApp->SetStartupComplete(true);
 443
 444     // Call the Python wxApp's OnInit function
 445     blocked = wxPyBeginBlockThreads();
 446     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 447
 448         PyObject* method = m_myInst.GetLastFound();
 449         PyObject* argTuple = PyTuple_New(0);
 450         retval = PyEval_CallObject(method, argTuple);
 451         Py_DECREF(argTuple);
 452         Py_DECREF(method);
 453         if (retval == NULL)
 454             goto error;
 455
 456         pyint = PyNumber_Int(retval);
 457         if (! pyint) {
 458             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 459             goto error;
 460         }
 461         result = PyInt_AS_LONG(pyint);
 462     }
 463     else {
 464         // Is it okay if there is no OnInit?  Probably so...
 465         result = true;
 466     }
 467
 468     if (! result) {
 469         PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
 470     }
 471
 472  error:
 473     Py_XDECREF(retval);
 474     Py_XDECREF(pyint);
 475
 476     wxPyEndBlockThreads(blocked);
 477 };
 478
 479 //---------------------------------------------------------------------
 480 //----------------------------------------------------------------------
 481
 482
 483 #if 0
 484 static char* wxPyCopyCString(const wxChar* src)
 485 {
 486     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 487     size_t len = strlen(buff);
 488     char*  dest = new char[len+1];
 489     strcpy(dest, buff);
 490     return dest;
 491 }
 492
 493 #if wxUSE_UNICODE
 494 static char* wxPyCopyCString(const char* src)   // we need a char version too
 495 {
 496     size_t len = strlen(src);
 497     char*  dest = new char[len+1];
 498     strcpy(dest, src);
 499     return dest;
 500 }
 501 #endif
 502
 503 static wxChar* wxPyCopyWString(const char *src)
 504 {
 505     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 506     wxString str(src, *wxConvCurrent);
 507     return copystring(str);
 508 }
 509
 510 #if wxUSE_UNICODE
 511 static wxChar* wxPyCopyWString(const wxChar *src)
 512 {
 513     return copystring(src);
 514 }
 515 #endif
 516 #endif
 517
 518
 519 inline const char* dropwx(const char* name) {
 520     if (name[0] == 'w' && name[1] == 'x')
 521         return name+2;
 522     else
 523         return name;
 524 }
 525
 526 //----------------------------------------------------------------------
 527
 528 // This function is called when the wx._core_ module is imported to do some
 529 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 530 // wxPyApp::_BootstrapApp
 531 void __wxPyPreStart(PyObject* moduleDict)
 532 {
 533
 534 #ifdef __WXMSW__
 535 //     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF
 536 //                     | _CRTDBG_CHECK_ALWAYS_DF
 537 //                     | _CRTDBG_DELAY_FREE_MEM_DF
 538 //         );
 539 #endif
 540
 541 #ifdef WXP_WITH_THREAD
 542     PyEval_InitThreads();
 543     wxPyTStates = new wxPyThreadStateArray;
 544     wxPyTMutex = new wxMutex;
 545
 546     // Save the current (main) thread state in our array
 547     PyThreadState* tstate = wxPyBeginAllowThreads();
 548     wxPyEndAllowThreads(tstate);
 549 #endif
 550
 551     // Ensure that the build options in the DLL (or whatever) match this build
 552     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 553
 554     // Init the stock objects to a non-NULL value so SWIG doesn't create them as None
 555     wxPy_ReinitStockObjects(1);
 556
 557     wxInitAllImageHandlers();
 558 }
 559
 560
 561
 562 void __wxPyCleanup() {
 563     wxPyDoingCleanup = true;
 564     if (wxPyDoCleanup) {
 565         wxPyDoCleanup = false;
 566         wxEntryCleanup();
 567     }
 568 #ifdef WXP_WITH_THREAD
 569     delete wxPyTMutex;
 570     wxPyTMutex = NULL;
 571     wxPyTStates->Empty();
 572     delete wxPyTStates;
 573     wxPyTStates = NULL;
 574 #endif
 575 }
 576
 577
 578 // Save a reference to the dictionary of the wx._core module, and inject
 579 // a few more things into it.
 580 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 581 {
 582
 583     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 584         return NULL;
 585
 586     if (!PyDict_Check(wxPython_dict)) {
 587         PyErr_SetString(PyExc_TypeError,
 588                         "_wxPySetDictionary must have dictionary object!");
 589         return NULL;
 590     }
 591
 592     if (! wxPyPtrTypeMap)
 593         wxPyPtrTypeMap = PyDict_New();
 594     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 595
 596     // Create an exception object to use for wxASSERTions
 597     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 598                                             PyExc_AssertionError, NULL);
 599     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 600
 601     // Create an exception object to use when the app object hasn't been created yet
 602     wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
 603                                         PyExc_RuntimeError, NULL);
 604     PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
 605
 606
 607
 608 #ifdef __WXMOTIF__
 609 #define wxPlatform "__WXMOTIF__"
 610 #define wxPlatName "wxMotif"
 611 #endif
 612 #ifdef __WXX11__
 613 #define wxPlatform "__WXX11__"
 614 #define wxPlatName "wxX11"
 615 #endif
 616 #ifdef __WXGTK__
 617 #define wxPlatform "__WXGTK__"
 618 #define wxPlatName "wxGTK"
 619 #endif
 620 #ifdef __WXMSW__
 621 #define wxPlatform "__WXMSW__"
 622 #define wxPlatName "wxMSW"
 623 #endif
 624 #ifdef __WXMAC__
 625 #define wxPlatform "__WXMAC__"
 626 #define wxPlatName "wxMac"
 627 #endif
 628
 629 #ifdef __WXDEBUG__
 630     int wxdebug = 1;
 631 #else
 632     int wxdebug = 0;
 633 #endif
 634
 635     // These should be deprecated in favor of the PlatformInfo tuple built below...
 636     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 637     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 638     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 639
 640     // Make a tuple of strings that gives more info about the platform.
 641     PyObject* PlatInfo = PyList_New(0);
 642     PyObject* obj;
 643
 644 #define _AddInfoString(st) \
 645     obj = PyString_FromString(st); \
 646     PyList_Append(PlatInfo, obj); \
 647     Py_DECREF(obj)
 648
 649     _AddInfoString(wxPlatform);
 650     _AddInfoString(wxPlatName);
 651 #if wxUSE_UNICODE
 652     _AddInfoString("unicode");
 653 #else
 654     _AddInfoString("ansi");
 655 #endif
 656 #ifdef __WXGTK__
 657 #ifdef __WXGTK20__
 658     _AddInfoString("gtk2");
 659 #else
 660     _AddInfoString("gtk1");
 661 #endif
 662 #endif
 663 #ifdef __WXDEBUG__
 664     _AddInfoString("wx-assertions-on");
 665 #else
 666     _AddInfoString("wx-assertions-off");
 667 #endif
 668
 669 #undef _AddInfoString
 670
 671     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 672     Py_DECREF(PlatInfo);
 673     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 674
 675     RETURN_NONE();
 676 }
 677
 678
 679 //---------------------------------------------------------------------------
 680
 681 // Python's PyInstance_Check does not return True for instances of new-style
 682 // classes.  This should get close enough for both new and old classes but I
 683 // should re-evaluate the need for doing instance checks...
 684 bool wxPyInstance_Check(PyObject* obj) {
 685     return PyObject_HasAttrString(obj, "__class__") != 0;
 686 }
 687
 688
 689 // This one checks if the object is an instance of a SWIG proxy class (it has
 690 // a .this attribute)
 691 bool wxPySwigInstance_Check(PyObject* obj) {
 692     return PyObject_HasAttrString(obj, "this") != 0;
 693 }
 694
 695 //---------------------------------------------------------------------------
 696
 697 // The stock objects are no longer created when the wx._core_ module is
 698 // imported, but only after the app object has been created.  The
 699 // wxPy_ReinitStockObjects function will be called 3 times to pass the stock
 700 // objects though various stages of evolution:
 701 //
 702 //   pass 1: Set all the pointers to a non-NULL value so the Python proxy
 703 //           object will be created (otherwise SWIG will just use None.)
 704 //
 705 //   pass 2: After the module has been imported and the python proxys have
 706 //           been created, then set the __class__ to be _wxPyUnbornObject so
 707 //           it will catch any access to the object and will raise an exception.
 708 //
 709 //   pass 3: Finally, from BootstrapApp patch things up so the stock objects
 710 //           can be used.
 711
 712
 713 PyObject* __wxPyFixStockObjects(PyObject* /* self */, PyObject* args)
 714 {
 715     wxPy_ReinitStockObjects(2);
 716     RETURN_NONE();
 717 }
 718
 719
 720 static void rsoPass2(const char* name)
 721 {
 722     static PyObject* unbornObjectClass = NULL;
 723     PyObject* obj;
 724
 725     if (unbornObjectClass == NULL) {
 726         unbornObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyUnbornObject");
 727         Py_INCREF(unbornObjectClass);
 728     }
 729
 730     // Find the object instance
 731     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 732     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 733     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 734
 735     // Change its class
 736     PyObject_SetAttrString(obj, "__class__",  unbornObjectClass);
 737
 738 }
 739
 740 static void rsoPass3(const char* name, const char* classname, void* ptr)
 741 {
 742     PyObject* obj;
 743     PyObject* classobj;
 744     PyObject* ptrobj;
 745
 746     // Find the object instance
 747     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 748     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 749     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 750
 751     // Find the class object and put it back in the instance
 752     classobj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(classname));
 753     wxCHECK_RET(classobj != NULL, wxT("Unable to find stock class object"));
 754     PyObject_SetAttrString(obj, "__class__",  classobj);
 755
 756     // Rebuild the .this swigified pointer with the new value of the C++ pointer
 757     ptrobj = wxPyMakeSwigPtr(ptr, wxString(classname, *wxConvCurrent));
 758     PyObject_SetAttrString(obj, "this", ptrobj);
 759     Py_DECREF(ptrobj);
 760 }
 761
 762
 763
 764 void wxPy_ReinitStockObjects(int pass)
 765 {
 766
 767     // If there is already an App object then wxPython is probably embedded in
 768     // a wx C++ application, so there is no need to do all this.
 769     static bool embedded = false;
 770     if ((pass == 1 || pass == 2) && wxTheApp) {
 771         embedded = true;
 772         return;
 773     }
 774     if (pass == 3 && embedded)
 775         return;
 776
 777
 778 #define REINITOBJ(name, classname) \
 779     if (pass == 1) { name = (classname*)0xC0C0C0C0; } \
 780     else if (pass == 2) { rsoPass2(#name); } \
 781     else if (pass == 3) { rsoPass3(#name, #classname, (void*)name); }
 782
 783
 784 #define REINITOBJ2(name, classname) \
 785     if (pass == 1) { } \
 786     else if (pass == 2) { rsoPass2(#name); } \
 787     else if (pass == 3) { rsoPass3(#name, #classname, (void*)&name); }
 788
 789
 790     REINITOBJ(wxNORMAL_FONT, wxFont);
 791     REINITOBJ(wxSMALL_FONT, wxFont);
 792     REINITOBJ(wxITALIC_FONT, wxFont);
 793     REINITOBJ(wxSWISS_FONT, wxFont);
 794
 795     REINITOBJ(wxRED_PEN, wxPen);
 796     REINITOBJ(wxCYAN_PEN, wxPen);
 797     REINITOBJ(wxGREEN_PEN, wxPen);
 798     REINITOBJ(wxBLACK_PEN, wxPen);
 799     REINITOBJ(wxWHITE_PEN, wxPen);
 800     REINITOBJ(wxTRANSPARENT_PEN, wxPen);
 801     REINITOBJ(wxBLACK_DASHED_PEN, wxPen);
 802     REINITOBJ(wxGREY_PEN, wxPen);
 803     REINITOBJ(wxMEDIUM_GREY_PEN, wxPen);
 804     REINITOBJ(wxLIGHT_GREY_PEN, wxPen);
 805
 806     REINITOBJ(wxBLUE_BRUSH, wxBrush);
 807     REINITOBJ(wxGREEN_BRUSH, wxBrush);
 808     REINITOBJ(wxWHITE_BRUSH, wxBrush);
 809     REINITOBJ(wxBLACK_BRUSH, wxBrush);
 810     REINITOBJ(wxTRANSPARENT_BRUSH, wxBrush);
 811     REINITOBJ(wxCYAN_BRUSH, wxBrush);
 812     REINITOBJ(wxRED_BRUSH, wxBrush);
 813     REINITOBJ(wxGREY_BRUSH, wxBrush);
 814     REINITOBJ(wxMEDIUM_GREY_BRUSH, wxBrush);
 815     REINITOBJ(wxLIGHT_GREY_BRUSH, wxBrush);
 816
 817     REINITOBJ(wxBLACK, wxColour);
 818     REINITOBJ(wxWHITE, wxColour);
 819     REINITOBJ(wxRED, wxColour);
 820     REINITOBJ(wxBLUE, wxColour);
 821     REINITOBJ(wxGREEN, wxColour);
 822     REINITOBJ(wxCYAN, wxColour);
 823     REINITOBJ(wxLIGHT_GREY, wxColour);
 824
 825     REINITOBJ(wxSTANDARD_CURSOR, wxCursor);
 826     REINITOBJ(wxHOURGLASS_CURSOR, wxCursor);
 827     REINITOBJ(wxCROSS_CURSOR, wxCursor);
 828
 829     REINITOBJ2(wxNullBitmap, wxBitmap);
 830     REINITOBJ2(wxNullIcon, wxIcon);
 831     REINITOBJ2(wxNullCursor, wxCursor);
 832     REINITOBJ2(wxNullPen, wxPen);
 833     REINITOBJ2(wxNullBrush, wxBrush);
 834     REINITOBJ2(wxNullPalette, wxPalette);
 835     REINITOBJ2(wxNullFont, wxFont);
 836     REINITOBJ2(wxNullColour, wxColour);
 837
 838     REINITOBJ(wxTheFontList, wxFontList);
 839     REINITOBJ(wxThePenList, wxPenList);
 840     REINITOBJ(wxTheBrushList, wxBrushList);
 841     REINITOBJ(wxTheColourDatabase, wxColourDatabase);
 842
 843
 844     REINITOBJ2(wxDefaultValidator, wxValidator);
 845     REINITOBJ2(wxNullImage, wxImage);
 846     REINITOBJ2(wxNullAcceleratorTable, wxAcceleratorTable);
 847
 848 #undef REINITOBJ
 849 #undef REINITOBJ2
 850 }
 851
 852 //---------------------------------------------------------------------------
 853
 854 // Check for existence of a wxApp, setting an exception if there isn't one.
 855 // This doesn't need to aquire the GIL because it should only be called from
 856 // an %exception before the lock is released.
 857
 858 bool wxPyCheckForApp() {
 859     if (wxTheApp != NULL)
 860         return true;
 861     else {
 862         PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
 863         return false;
 864     }
 865 }
 866
 867 //---------------------------------------------------------------------------
 868
 869 void wxPyUserData_dtor(wxPyUserData* self) {
 870     if (! wxPyDoingCleanup) {
 871         bool blocked = wxPyBeginBlockThreads();
 872         Py_DECREF(self->m_obj);
 873         self->m_obj = NULL;
 874         wxPyEndBlockThreads(blocked);
 875     }
 876 }
 877
 878
 879 void wxPyClientData_dtor(wxPyClientData* self) {
 880     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 881                                         // may have already garbage collected the object...
 882         if (self->m_incRef) {
 883             bool blocked = wxPyBeginBlockThreads();
 884             Py_DECREF(self->m_obj);
 885             wxPyEndBlockThreads(blocked);
 886         }
 887         self->m_obj = NULL;
 888     }
 889 }
 890
 891
 892
 893 // This is called when an OOR controled object is being destroyed.  Although
 894 // the C++ object is going away there is no way to force the Python object
 895 // (and all references to it) to die too.  This causes problems (crashes) in
 896 // wxPython when a python shadow object attempts to call a C++ method using
 897 // the now bogus pointer... So to try and prevent this we'll do a little black
 898 // magic and change the class of the python instance to a class that will
 899 // raise an exception for any attempt to call methods with it.  See
 900 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 901 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 902
 903     static PyObject* deadObjectClass = NULL;
 904
 905     bool blocked = wxPyBeginBlockThreads();
 906     if (deadObjectClass == NULL) {
 907         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 908         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 909         // will lead to a deadlock when it tries to aquire the GIL again.
 910         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 911         Py_INCREF(deadObjectClass);
 912     }
 913
 914
 915     // Only if there is more than one reference to the object and we are
 916     // holding the OOR reference:
 917     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
 918         // bool isInstance = wxPyInstance_Check(self->m_obj);
 919         // TODO same here
 920         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 921
 922         // Call __del__, if there is one.
 923         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 924         if (func) {
 925             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 926             Py_XDECREF(rv);
 927             Py_DECREF(func);
 928         }
 929         if (PyErr_Occurred())
 930             PyErr_Clear();      // just ignore it for now
 931
 932
 933         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 934         if (dict) {
 935             // Clear the instance's dictionary
 936             PyDict_Clear(dict);
 937
 938             // put the name of the old class into the instance, and then reset the
 939             // class to be the dead class.
 940             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 941             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 942             PyDict_SetItemString(dict, "_name", name);
 943             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 944             //Py_INCREF(deadObjectClass);
 945             Py_DECREF(klass);
 946             Py_DECREF(name);
 947         }
 948     }
 949
 950     // m_obj is DECREF'd in the base class dtor...
 951     wxPyEndBlockThreads(blocked);
 952 }
 953
 954
 955 //---------------------------------------------------------------------------
 956 // Stuff used by OOR to find the right wxPython class type to return and to
 957 // build it.
 958
 959
 960 // The pointer type map is used when the "pointer" type name generated by SWIG
 961 // is not the same as the shadow class name, for example wxPyTreeCtrl
 962 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 963 // so we'll just make it a Python dictionary in the wx module's namespace.
 964 // (See __wxSetDictionary)
 965 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 966     if (! wxPyPtrTypeMap)
 967         wxPyPtrTypeMap = PyDict_New();
 968     PyDict_SetItemString(wxPyPtrTypeMap,
 969                          (char*)commonName,
 970                          PyString_FromString((char*)ptrName));
 971 }
 972
 973
 974
 975
 976 PyObject*  wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
 977     PyObject* target = NULL;
 978     bool      isEvtHandler = false;
 979
 980     if (source) {
 981         // If it's derived from wxEvtHandler then there may
 982         // already be a pointer to a Python object that we can use
 983         // in the OOR data.
 984         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 985             isEvtHandler = true;
 986             wxEvtHandler* eh = (wxEvtHandler*)source;
 987             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 988             if (data) {
 989                 target = data->m_obj;
 990                 if (target)
 991                     Py_INCREF(target);
 992             }
 993         }
 994
 995         if (! target) {
 996             // Otherwise make it the old fashioned way by making a new shadow
 997             // object and putting this pointer in it.  Look up the class
 998             // heirarchy until we find a class name that is located in the
 999             // python module.
1000             const wxClassInfo* info   = source->GetClassInfo();
1001             wxString           name   = info->GetClassName();
1002             bool               exists = wxPyCheckSwigType(name);
1003             while (info && !exists) {
1004                 info = info->GetBaseClass1();
1005                 name = info->GetClassName();
1006                 exists = wxPyCheckSwigType(name);
1007             }
1008             if (info) {
1009                 target = wxPyConstructObject((void*)source, name, setThisOwn);
1010                 if (target && isEvtHandler)
1011                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
1012             } else {
1013                 wxString msg(wxT("wxPython class not found for "));
1014                 msg += source->GetClassInfo()->GetClassName();
1015                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
1016                 target = NULL;
1017             }
1018         }
1019     } else {  // source was NULL so return None.
1020         Py_INCREF(Py_None); target = Py_None;
1021     }
1022     return target;
1023 }
1024
1025
1026 PyObject*  wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
1027     PyObject* target = NULL;
1028
1029     if (source && wxIsKindOf(source, wxSizer)) {
1030         // If it's derived from wxSizer then there may already be a pointer to
1031         // a Python object that we can use in the OOR data.
1032         wxSizer* sz = (wxSizer*)source;
1033         wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
1034         if (data) {
1035             target = data->m_obj;
1036             if (target)
1037                 Py_INCREF(target);
1038         }
1039     }
1040     if (! target) {
1041         target = wxPyMake_wxObject(source, setThisOwn, false);
1042         if (target != Py_None)
1043             ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
1044     }
1045     return target;
1046 }
1047
1048
1049 //---------------------------------------------------------------------------
1050
1051
1052 #ifdef WXP_WITH_THREAD
1053 inline
1054 unsigned long wxPyGetCurrentThreadId() {
1055     return wxThread::GetCurrentId();
1056 }
1057
1058 static wxPyThreadState gs_shutdownTState;
1059
1060 static
1061 wxPyThreadState* wxPyGetThreadState() {
1062     if (wxPyTMutex == NULL) // Python is shutting down...
1063         return &gs_shutdownTState;
1064
1065     unsigned long ctid = wxPyGetCurrentThreadId();
1066     wxPyThreadState* tstate = NULL;
1067
1068     wxPyTMutex->Lock();
1069     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1070         wxPyThreadState& info = wxPyTStates->Item(i);
1071         if (info.tid == ctid) {
1072             tstate = &info;
1073             break;
1074         }
1075     }
1076     wxPyTMutex->Unlock();
1077     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
1078     return tstate;
1079 }
1080
1081
1082 static
1083 void wxPySaveThreadState(PyThreadState* tstate) {
1084     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
1085         gs_shutdownTState.tstate = tstate;
1086         return;
1087     }
1088     unsigned long ctid = wxPyGetCurrentThreadId();
1089     wxPyTMutex->Lock();
1090     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1091         wxPyThreadState& info = wxPyTStates->Item(i);
1092         if (info.tid == ctid) {
1093 #if 0
1094             if (info.tstate != tstate)
1095                 wxLogMessage("*** tstate mismatch!???");
1096 #endif
1097             info.tstate = tstate;    // allow for transient tstates
1098             // Normally it will never change, but apparently COM callbacks
1099             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
1100             // tstate which will then be garbage the next time we try to use
1101             // it...
1102
1103             wxPyTMutex->Unlock();
1104             return;
1105         }
1106     }
1107     // not found, so add it...
1108     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
1109     wxPyTMutex->Unlock();
1110 }
1111
1112 #endif
1113
1114
1115
1116 // Calls from Python to wxWindows code are wrapped in calls to these
1117 // functions:
1118
1119 PyThreadState* wxPyBeginAllowThreads() {
1120 #ifdef WXP_WITH_THREAD
1121     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1122     wxPySaveThreadState(saved);
1123     return saved;
1124 #else
1125     return NULL;
1126 #endif
1127 }
1128
1129 void wxPyEndAllowThreads(PyThreadState* saved) {
1130 #ifdef WXP_WITH_THREAD
1131     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1132 #endif
1133 }
1134
1135
1136
1137 // Calls from wxWindows back to Python code, or even any PyObject
1138 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1139
1140 bool wxPyBeginBlockThreads() {
1141 #ifdef WXP_WITH_THREAD
1142     // This works in for 2.3, maybe a good alternative to find the needed tstate?
1143     // PyThreadState *check = PyGILState_GetThisThreadState();
1144
1145     PyThreadState *current = _PyThreadState_Current;
1146
1147     // Only block if there wasn't already a tstate, or if the current one is
1148     // not the one we are wanting to change to.  This should prevent deadlock
1149     // if there are nested calls to wxPyBeginBlockThreads
1150     bool blocked = false;
1151     wxPyThreadState* tstate = wxPyGetThreadState();
1152     if (current != tstate->tstate) {
1153         PyEval_RestoreThread(tstate->tstate);
1154         blocked = true;
1155     }
1156     return blocked;
1157 #endif
1158 }
1159
1160
1161 void wxPyEndBlockThreads(bool blocked) {
1162 #ifdef WXP_WITH_THREAD
1163     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1164     // The value of blocked passed in needs to be the same as that returned
1165     // from wxPyBeginBlockThreads at the same nesting level.
1166     if ( blocked ) {
1167         PyEval_SaveThread();
1168     }
1169 #endif
1170 }
1171
1172
1173 //---------------------------------------------------------------------------
1174 // wxPyInputStream and wxPyCBInputStream methods
1175
1176
1177 void wxPyInputStream::close() {
1178     /* do nothing for now */
1179 }
1180
1181 void wxPyInputStream::flush() {
1182     /* do nothing for now */
1183 }
1184
1185 bool wxPyInputStream::eof() {
1186     if (m_wxis)
1187         return m_wxis->Eof();
1188     else
1189         return true;
1190 }
1191
1192 wxPyInputStream::~wxPyInputStream() {
1193     if (m_wxis)
1194         delete m_wxis;
1195 }
1196
1197
1198
1199
1200 PyObject* wxPyInputStream::read(int size) {
1201     PyObject* obj = NULL;
1202     wxMemoryBuffer buf;
1203     const int BUFSIZE = 1024;
1204
1205     // check if we have a real wxInputStream to work with
1206     if (!m_wxis) {
1207         bool blocked = wxPyBeginBlockThreads();
1208         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1209         wxPyEndBlockThreads(blocked);
1210         return NULL;
1211     }
1212
1213     if (size < 0) {
1214         // read while bytes are available on the stream
1215         while ( m_wxis->CanRead() ) {
1216             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1217             buf.UngetAppendBuf(m_wxis->LastRead());
1218         }
1219
1220     } else {  // Read only size number of characters
1221         m_wxis->Read(buf.GetWriteBuf(size), size);
1222         buf.UngetWriteBuf(m_wxis->LastRead());
1223     }
1224
1225     // error check
1226     bool blocked = wxPyBeginBlockThreads();
1227     wxStreamError err = m_wxis->GetLastError();
1228     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1229         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1230     }
1231     else {
1232         // We use only strings for the streams, not unicode
1233         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1234     }
1235     wxPyEndBlockThreads(blocked);
1236     return obj;
1237 }
1238
1239
1240 PyObject* wxPyInputStream::readline(int size) {
1241     PyObject* obj = NULL;
1242     wxMemoryBuffer buf;
1243     int i;
1244     char ch;
1245
1246     // check if we have a real wxInputStream to work with
1247     if (!m_wxis) {
1248         bool blocked = wxPyBeginBlockThreads();
1249         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1250         wxPyEndBlockThreads(blocked);
1251         return NULL;
1252     }
1253
1254     // read until \n or byte limit reached
1255     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1256         ch = m_wxis->GetC();
1257         buf.AppendByte(ch);
1258     }
1259
1260     // errorcheck
1261     bool blocked = wxPyBeginBlockThreads();
1262     wxStreamError err = m_wxis->GetLastError();
1263     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1264         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1265     }
1266     else {
1267         // We use only strings for the streams, not unicode
1268         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1269     }
1270     wxPyEndBlockThreads(blocked);
1271     return obj;
1272 }
1273
1274
1275 PyObject* wxPyInputStream::readlines(int sizehint) {
1276     PyObject* pylist;
1277
1278     // check if we have a real wxInputStream to work with
1279     if (!m_wxis) {
1280         bool blocked = wxPyBeginBlockThreads();
1281         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1282         wxPyEndBlockThreads(blocked);
1283         return NULL;
1284     }
1285
1286     // init list
1287     bool blocked = wxPyBeginBlockThreads();
1288     pylist = PyList_New(0);
1289     wxPyEndBlockThreads(blocked);
1290
1291     if (!pylist) {
1292         bool blocked = wxPyBeginBlockThreads();
1293         PyErr_NoMemory();
1294         wxPyEndBlockThreads(blocked);
1295         return NULL;
1296     }
1297
1298     // read sizehint bytes or until EOF
1299     int i;
1300     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1301         PyObject* s = this->readline();
1302         if (s == NULL) {
1303             bool blocked = wxPyBeginBlockThreads();
1304             Py_DECREF(pylist);
1305             wxPyEndBlockThreads(blocked);
1306             return NULL;
1307         }
1308         bool blocked = wxPyBeginBlockThreads();
1309         PyList_Append(pylist, s);
1310         i += PyString_Size(s);
1311         wxPyEndBlockThreads(blocked);
1312     }
1313
1314     // error check
1315     wxStreamError err = m_wxis->GetLastError();
1316     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1317         bool blocked = wxPyBeginBlockThreads();
1318         Py_DECREF(pylist);
1319         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1320         wxPyEndBlockThreads(blocked);
1321         return NULL;
1322     }
1323
1324     return pylist;
1325 }
1326
1327
1328 void wxPyInputStream::seek(int offset, int whence) {
1329     if (m_wxis)
1330         m_wxis->SeekI(offset, wxSeekMode(whence));
1331 }
1332
1333 int wxPyInputStream::tell(){
1334     if (m_wxis)
1335         return m_wxis->TellI();
1336     else return 0;
1337 }
1338
1339
1340
1341
1342 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1343     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1344 {}
1345
1346 wxPyCBInputStream::wxPyCBInputStream(const wxPyCBInputStream& other)
1347 {
1348     m_read  = other.m_read;
1349     m_seek  = other.m_seek;
1350     m_tell  = other.m_tell;
1351     m_block = other.m_block;
1352     Py_INCREF(m_read);
1353     Py_INCREF(m_seek);
1354     Py_INCREF(m_tell);
1355 }
1356
1357
1358 wxPyCBInputStream::~wxPyCBInputStream() {
1359     bool blocked=false;
1360     if (m_block) blocked = wxPyBeginBlockThreads();
1361     Py_XDECREF(m_read);
1362     Py_XDECREF(m_seek);
1363     Py_XDECREF(m_tell);
1364     if (m_block) wxPyEndBlockThreads(blocked);
1365 }
1366
1367
1368 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1369     bool blocked=false;
1370     if (block) blocked = wxPyBeginBlockThreads();
1371
1372     PyObject* read = getMethod(py, "read");
1373     PyObject* seek = getMethod(py, "seek");
1374     PyObject* tell = getMethod(py, "tell");
1375
1376     if (!read) {
1377         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1378         Py_XDECREF(read);
1379         Py_XDECREF(seek);
1380         Py_XDECREF(tell);
1381         if (block) wxPyEndBlockThreads(blocked);
1382         return NULL;
1383     }
1384
1385     if (block) wxPyEndBlockThreads(blocked);
1386     return new wxPyCBInputStream(read, seek, tell, block);
1387 }
1388
1389
1390 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1391     return wxPyCBInputStream::create(py, block);
1392 }
1393
1394 wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other) {
1395     return new wxPyCBInputStream(*other);
1396 }
1397
1398 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1399     if (!PyObject_HasAttrString(py, name))
1400         return NULL;
1401     PyObject* o = PyObject_GetAttrString(py, name);
1402     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1403         Py_DECREF(o);
1404         return NULL;
1405     }
1406     return o;
1407 }
1408
1409
1410 wxFileOffset wxPyCBInputStream::GetLength() const {
1411     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1412     if (m_seek && m_tell) {
1413         wxFileOffset temp = self->OnSysTell();
1414         wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
1415         self->OnSysSeek(temp, wxFromStart);
1416         return ret;
1417     }
1418     else
1419         return wxInvalidOffset;
1420 }
1421
1422
1423 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1424     if (bufsize == 0)
1425         return 0;
1426
1427     bool blocked = wxPyBeginBlockThreads();
1428     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1429     PyObject* result = PyEval_CallObject(m_read, arglist);
1430     Py_DECREF(arglist);
1431
1432     size_t o = 0;
1433     if ((result != NULL) && PyString_Check(result)) {
1434         o = PyString_Size(result);
1435         if (o == 0)
1436             m_lasterror = wxSTREAM_EOF;
1437         if (o > bufsize)
1438             o = bufsize;
1439         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1440         Py_DECREF(result);
1441
1442     }
1443     else
1444         m_lasterror = wxSTREAM_READ_ERROR;
1445     wxPyEndBlockThreads(blocked);
1446     return o;
1447 }
1448
1449 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1450     m_lasterror = wxSTREAM_WRITE_ERROR;
1451     return 0;
1452 }
1453
1454
1455 wxFileOffset wxPyCBInputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
1456     bool blocked = wxPyBeginBlockThreads();
1457     PyObject* arglist = PyTuple_New(2);
1458
1459     if (sizeof(wxFileOffset) > sizeof(long))
1460         // wxFileOffset is a 64-bit value...
1461         PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
1462     else
1463         PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
1464
1465     PyTuple_SET_ITEM(arglist, 1, PyInt_FromLong(mode));
1466
1467
1468     PyObject* result = PyEval_CallObject(m_seek, arglist);
1469     Py_DECREF(arglist);
1470     Py_XDECREF(result);
1471     wxPyEndBlockThreads(blocked);
1472     return OnSysTell();
1473 }
1474
1475
1476 wxFileOffset wxPyCBInputStream::OnSysTell() const {
1477     bool blocked = wxPyBeginBlockThreads();
1478     PyObject* arglist = Py_BuildValue("()");
1479     PyObject* result = PyEval_CallObject(m_tell, arglist);
1480     Py_DECREF(arglist);
1481     wxFileOffset o = 0;
1482     if (result != NULL) {
1483         if (PyLong_Check(result))
1484             o = PyLong_AsLongLong(result);
1485         else
1486             o = PyInt_AsLong(result);
1487         Py_DECREF(result);
1488     };
1489     wxPyEndBlockThreads(blocked);
1490     return o;
1491 }
1492
1493 //----------------------------------------------------------------------
1494
1495 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1496
1497 wxPyCallback::wxPyCallback(PyObject* func) {
1498     m_func = func;
1499     Py_INCREF(m_func);
1500 }
1501
1502 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1503     m_func = other.m_func;
1504     Py_INCREF(m_func);
1505 }
1506
1507 wxPyCallback::~wxPyCallback() {
1508     bool blocked = wxPyBeginBlockThreads();
1509     Py_DECREF(m_func);
1510     wxPyEndBlockThreads(blocked);
1511 }
1512
1513
1514 #define wxPy_PRECALLINIT     "_preCallInit"
1515 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1516
1517 // This function is used for all events destined for Python event handlers.
1518 void wxPyCallback::EventThunker(wxEvent& event) {
1519     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1520     PyObject*       func = cb->m_func;
1521     PyObject*       result;
1522     PyObject*       arg;
1523     PyObject*       tuple;
1524     bool            checkSkip = false;
1525
1526     bool blocked = wxPyBeginBlockThreads();
1527     wxString className = event.GetClassInfo()->GetClassName();
1528
1529     // If the event is one of these types then pass the original
1530     // event object instead of the one passed to us.
1531     if ( className == wxT("wxPyEvent") ) {
1532         arg =       ((wxPyEvent*)&event)->GetSelf();
1533         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1534     }
1535     else if ( className == wxT("wxPyCommandEvent") ) {
1536         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1537         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1538     }
1539     else {
1540         arg = wxPyConstructObject((void*)&event, className);
1541     }
1542
1543     if (!arg) {
1544         PyErr_Print();
1545     } else {
1546         // "intern" the pre/post method names to speed up the HasAttr
1547         static PyObject* s_preName  = NULL;
1548         static PyObject* s_postName = NULL;
1549         if (s_preName == NULL) {
1550             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1551             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1552         }
1553
1554         // Check if the event object needs some preinitialization
1555         if (PyObject_HasAttr(arg, s_preName)) {
1556             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1557             if ( result ) {
1558                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1559                 PyErr_Clear();       // Just in case...
1560             } else {
1561                 PyErr_Print();
1562             }
1563         }
1564
1565         // Call the event handler, passing the event object
1566         tuple = PyTuple_New(1);
1567         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1568         result = PyEval_CallObject(func, tuple);
1569         if ( result ) {
1570             Py_DECREF(result);   // result is ignored, but we still need to decref it
1571             PyErr_Clear();       // Just in case...
1572         } else {
1573             PyErr_Print();
1574         }
1575
1576         // Check if the event object needs some post cleanup
1577         if (PyObject_HasAttr(arg, s_postName)) {
1578             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1579             if ( result ) {
1580                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1581                 PyErr_Clear();       // Just in case...
1582             } else {
1583                 PyErr_Print();
1584             }
1585         }
1586
1587         if ( checkSkip ) {
1588             // if the event object was one of our special types and
1589             // it had been cloned, then we need to extract the Skipped
1590             // value from the original and set it in the clone.
1591             result = PyObject_CallMethod(arg, "GetSkipped", "");
1592             if ( result ) {
1593                 event.Skip(PyInt_AsLong(result));
1594                 Py_DECREF(result);
1595             } else {
1596                 PyErr_Print();
1597             }
1598         }
1599         Py_DECREF(tuple);
1600     }
1601     wxPyEndBlockThreads(blocked);
1602 }
1603
1604
1605 //----------------------------------------------------------------------
1606
1607 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1608       m_lastFound = NULL;
1609       m_self = other.m_self;
1610       m_class = other.m_class;
1611       if (m_self) {
1612           Py_INCREF(m_self);
1613           Py_INCREF(m_class);
1614       }
1615 }
1616
1617
1618 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1619     m_self = self;
1620     m_class = klass;
1621     m_incRef = incref;
1622     if (incref) {
1623         Py_INCREF(m_self);
1624         Py_INCREF(m_class);
1625     }
1626 }
1627
1628
1629 #if PYTHON_API_VERSION >= 1011
1630
1631 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1632 // in which the method was defined.  Starting with 2.2 it returns
1633 // "class that asked for the method" which seems totally bogus to me
1634 // but apprently it fixes some obscure problem waiting to happen in
1635 // Python.  Since the API was not documented Guido and the gang felt
1636 // safe in changing it.  Needless to say that totally screwed up the
1637 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1638 // code to find the class where the method is actually defined...
1639
1640 static
1641 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1642 {
1643     int i, n;
1644
1645     if (PyType_Check(klass)) {      // new style classes
1646         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1647         PyTypeObject* type = (PyTypeObject*)klass;
1648         PyObject *mro, *res, *base, *dict;
1649         /* Look in tp_dict of types in MRO */
1650         mro = type->tp_mro;
1651         assert(PyTuple_Check(mro));
1652         n = PyTuple_GET_SIZE(mro);
1653         for (i = 0; i < n; i++) {
1654             base = PyTuple_GET_ITEM(mro, i);
1655             if (PyClass_Check(base))
1656                 dict = ((PyClassObject *)base)->cl_dict;
1657             else {
1658                 assert(PyType_Check(base));
1659                 dict = ((PyTypeObject *)base)->tp_dict;
1660             }
1661             assert(dict && PyDict_Check(dict));
1662             res = PyDict_GetItem(dict, name);
1663             if (res != NULL)
1664                 return base;
1665         }
1666         return NULL;
1667     }
1668
1669     else if (PyClass_Check(klass)) { // old style classes
1670         // This code is borrowed/adapted from class_lookup in classobject.c
1671         PyClassObject* cp = (PyClassObject*)klass;
1672         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1673         if (value != NULL) {
1674             return (PyObject*)cp;
1675         }
1676         n = PyTuple_Size(cp->cl_bases);
1677         for (i = 0; i < n; i++) {
1678             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1679             PyObject *v = PyFindClassWithAttr(base, name);
1680             if (v != NULL)
1681                 return v;
1682         }
1683         return NULL;
1684     }
1685     return NULL;
1686 }
1687 #endif
1688
1689
1690 static
1691 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
1692 {
1693     PyObject* mgc = PyMethod_GET_CLASS(method);
1694
1695 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1696     return mgc;
1697 #else                             // 2.2 and after, the hard way...
1698
1699     PyObject* nameo = PyString_FromString(name);
1700     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
1701     Py_DECREF(nameo);
1702     return klass;
1703 #endif
1704 }
1705
1706
1707
1708 bool wxPyCallbackHelper::findCallback(const char* name) const {
1709     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1710     self->m_lastFound = NULL;
1711
1712     // If the object (m_self) has an attibute of the given name...
1713     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
1714         PyObject *method, *klass;
1715         method = PyObject_GetAttrString(m_self, (char*)name);
1716
1717         // ...and if that attribute is a method, and if that method's class is
1718         // not from a base class...
1719         if (PyMethod_Check(method) &&
1720             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
1721             ((klass == m_class) || PyObject_IsSubclass(klass, m_class))) {
1722
1723             // ...then we'll save a pointer to the method so callCallback can call it.
1724             self->m_lastFound = method;
1725         }
1726         else {
1727             Py_DECREF(method);
1728         }
1729     }
1730     return m_lastFound != NULL;
1731 }
1732
1733
1734 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1735     PyObject*   result;
1736     int         retval = false;
1737
1738     result = callCallbackObj(argTuple);
1739     if (result) {                       // Assumes an integer return type...
1740         retval = PyInt_AsLong(result);
1741         Py_DECREF(result);
1742         PyErr_Clear();                  // forget about it if it's not...
1743     }
1744     return retval;
1745 }
1746
1747 // Invoke the Python callable object, returning the raw PyObject return
1748 // value.  Caller should DECREF the return value and also manage the GIL.
1749 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1750     PyObject* result;
1751
1752     // Save a copy of the pointer in case the callback generates another
1753     // callback.  In that case m_lastFound will have a different value when
1754     // it gets back here...
1755     PyObject* method = m_lastFound;
1756
1757     result = PyEval_CallObject(method, argTuple);
1758     Py_DECREF(argTuple);
1759     Py_DECREF(method);
1760     if (!result) {
1761         PyErr_Print();
1762     }
1763     return result;
1764 }
1765
1766
1767 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1768     cbh.setSelf(self, klass, incref);
1769 }
1770
1771 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
1772     return cbh.findCallback(name);
1773 }
1774
1775 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1776     return cbh.callCallback(argTuple);
1777 }
1778
1779 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1780     return cbh.callCallbackObj(argTuple);
1781 }
1782
1783
1784 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1785     if (cbh->m_incRef) {
1786         bool blocked = wxPyBeginBlockThreads();
1787         Py_XDECREF(cbh->m_self);
1788         Py_XDECREF(cbh->m_class);
1789         wxPyEndBlockThreads(blocked);
1790     }
1791 }
1792
1793 //---------------------------------------------------------------------------
1794 //---------------------------------------------------------------------------
1795 // These event classes can be derived from in Python and passed through the event
1796 // system without losing anything.  They do this by keeping a reference to
1797 // themselves and some special case handling in wxPyCallback::EventThunker.
1798
1799
1800 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1801     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1802     //Py_INCREF(m_self);        //      circular loops...
1803     m_cloned = false;
1804 }
1805
1806 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1807     bool blocked = wxPyBeginBlockThreads();
1808     if (m_cloned)
1809         Py_DECREF(m_self);
1810     wxPyEndBlockThreads(blocked);
1811 }
1812
1813 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1814     bool blocked = wxPyBeginBlockThreads();
1815     if (m_cloned)
1816         Py_DECREF(m_self);
1817     m_self = self;
1818     if (clone) {
1819         Py_INCREF(m_self);
1820         m_cloned = true;
1821     }
1822     wxPyEndBlockThreads(blocked);
1823 }
1824
1825 PyObject* wxPyEvtSelfRef::GetSelf() const {
1826     Py_INCREF(m_self);
1827     return m_self;
1828 }
1829
1830
1831 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1832 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1833
1834
1835 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1836     : wxEvent(winid, commandType) {
1837 }
1838
1839
1840 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1841     : wxEvent(evt)
1842 {
1843     SetSelf(evt.m_self, true);
1844 }
1845
1846
1847 wxPyEvent::~wxPyEvent() {
1848 }
1849
1850
1851 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1852     : wxCommandEvent(commandType, id) {
1853 }
1854
1855
1856 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1857     : wxCommandEvent(evt)
1858 {
1859     SetSelf(evt.m_self, true);
1860 }
1861
1862
1863 wxPyCommandEvent::~wxPyCommandEvent() {
1864 }
1865
1866
1867
1868
1869
1870 //---------------------------------------------------------------------------
1871 //---------------------------------------------------------------------------
1872 // Convert a wxList to a Python List, only works for lists of wxObjects
1873
1874 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1875     wxList*     list = (wxList*)listbase;  // this is probably bad...
1876     PyObject*   pyList;
1877     PyObject*   pyObj;
1878     wxObject*   wxObj;
1879     wxNode*     node = list->GetFirst();
1880
1881     bool blocked = wxPyBeginBlockThreads();
1882     pyList = PyList_New(0);
1883     while (node) {
1884         wxObj = node->GetData();
1885         pyObj = wxPyMake_wxObject(wxObj,false);
1886         PyList_Append(pyList, pyObj);
1887         node = node->GetNext();
1888     }
1889     wxPyEndBlockThreads(blocked);
1890     return pyList;
1891 }
1892
1893 //----------------------------------------------------------------------
1894
1895 long wxPyGetWinHandle(wxWindow* win) {
1896
1897 #ifdef __WXMSW__
1898     return (long)win->GetHandle();
1899 #endif
1900
1901 #if defined(__WXGTK__) || defined(__WXX11)
1902     return (long)GetXWindow(win);
1903 #endif
1904
1905 #ifdef __WXMAC__
1906     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
1907     return (long)win->GetHandle();
1908 #endif
1909
1910     return 0;
1911 }
1912
1913 //----------------------------------------------------------------------
1914 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1915 // included in every file over and over again...
1916
1917 wxString* wxString_in_helper(PyObject* source) {
1918     wxString* target = NULL;
1919
1920     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1921         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
1922         return NULL;
1923     }
1924 #if wxUSE_UNICODE
1925     PyObject* uni = source;
1926     if (PyString_Check(source)) {
1927         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1928         if (PyErr_Occurred()) return NULL;
1929     }
1930     target = new wxString();
1931     size_t len = PyUnicode_GET_SIZE(uni);
1932     if (len) {
1933         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target->GetWriteBuf(len), len);
1934         target->UngetWriteBuf(len);
1935     }
1936
1937     if (PyString_Check(source))
1938         Py_DECREF(uni);
1939 #else
1940     // Convert to a string object if it isn't already, then to wxString
1941     PyObject* str = source;
1942     if (PyUnicode_Check(source)) {
1943         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1944         if (PyErr_Occurred()) return NULL;
1945     }
1946     else if (!PyString_Check(source)) {
1947         str = PyObject_Str(source);
1948         if (PyErr_Occurred()) return NULL;
1949     }
1950     char* tmpPtr; int tmpSize;
1951     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1952     target = new wxString(tmpPtr, tmpSize);
1953
1954     if (!PyString_Check(source))
1955         Py_DECREF(str);
1956 #endif // wxUSE_UNICODE
1957
1958     return target;
1959 }
1960
1961
1962 // Similar to above except doesn't use "new" and doesn't set an exception
1963 wxString Py2wxString(PyObject* source)
1964 {
1965     wxString target;
1966
1967 #if wxUSE_UNICODE
1968     // Convert to a unicode object, if not already, then to a wxString
1969     PyObject* uni = source;
1970     if (!PyUnicode_Check(source)) {
1971         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1972         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
1973     }
1974     size_t len = PyUnicode_GET_SIZE(uni);
1975     if (len) {
1976         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target.GetWriteBuf(len), len);
1977         target.UngetWriteBuf();
1978     }
1979
1980     if (!PyUnicode_Check(source))
1981         Py_DECREF(uni);
1982 #else
1983     // Convert to a string object if it isn't already, then to wxString
1984     PyObject* str = source;
1985     if (PyUnicode_Check(source)) {
1986         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1987         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1988     }
1989     else if (!PyString_Check(source)) {
1990         str = PyObject_Str(source);
1991         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1992     }
1993     char* tmpPtr; int tmpSize;
1994     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1995     target = wxString(tmpPtr, tmpSize);
1996
1997     if (!PyString_Check(source))
1998         Py_DECREF(str);
1999 #endif // wxUSE_UNICODE
2000
2001     return target;
2002 }
2003
2004
2005 // Make either a Python String or Unicode object, depending on build mode
2006 PyObject* wx2PyString(const wxString& src)
2007 {
2008     PyObject* str;
2009 #if wxUSE_UNICODE
2010     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
2011 #else
2012     str = PyString_FromStringAndSize(src.c_str(), src.Len());
2013 #endif
2014     return str;
2015 }
2016
2017
2018
2019 void wxSetDefaultPyEncoding(const char* encoding)
2020 {
2021     strncpy(wxPyDefaultEncoding, encoding, DEFAULTENCODING_SIZE);
2022 }
2023
2024 const char* wxGetDefaultPyEncoding()
2025 {
2026     return wxPyDefaultEncoding;
2027 }
2028
2029 //----------------------------------------------------------------------
2030
2031
2032 byte* byte_LIST_helper(PyObject* source) {
2033     if (!PyList_Check(source)) {
2034         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2035         return NULL;
2036     }
2037     int count = PyList_Size(source);
2038     byte* temp = new byte[count];
2039     if (! temp) {
2040         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2041         return NULL;
2042     }
2043     for (int x=0; x<count; x++) {
2044         PyObject* o = PyList_GetItem(source, x);
2045         if (! PyInt_Check(o)) {
2046             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2047             return NULL;
2048         }
2049         temp[x] = (byte)PyInt_AsLong(o);
2050     }
2051     return temp;
2052 }
2053
2054
2055 int* int_LIST_helper(PyObject* source) {
2056     if (!PyList_Check(source)) {
2057         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2058         return NULL;
2059     }
2060     int count = PyList_Size(source);
2061     int* temp = new int[count];
2062     if (! temp) {
2063         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2064         return NULL;
2065     }
2066     for (int x=0; x<count; x++) {
2067         PyObject* o = PyList_GetItem(source, x);
2068         if (! PyInt_Check(o)) {
2069             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2070             return NULL;
2071         }
2072         temp[x] = PyInt_AsLong(o);
2073     }
2074     return temp;
2075 }
2076
2077
2078 long* long_LIST_helper(PyObject* source) {
2079     if (!PyList_Check(source)) {
2080         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2081         return NULL;
2082     }
2083     int count = PyList_Size(source);
2084     long* temp = new long[count];
2085     if (! temp) {
2086         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2087         return NULL;
2088     }
2089     for (int x=0; x<count; x++) {
2090         PyObject* o = PyList_GetItem(source, x);
2091         if (! PyInt_Check(o)) {
2092             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2093             return NULL;
2094         }
2095         temp[x] = PyInt_AsLong(o);
2096     }
2097     return temp;
2098 }
2099
2100
2101 char** string_LIST_helper(PyObject* source) {
2102     if (!PyList_Check(source)) {
2103         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2104         return NULL;
2105     }
2106     int count = PyList_Size(source);
2107     char** temp = new char*[count];
2108     if (! temp) {
2109         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2110         return NULL;
2111     }
2112     for (int x=0; x<count; x++) {
2113         PyObject* o = PyList_GetItem(source, x);
2114         if (! PyString_Check(o)) {
2115             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2116             return NULL;
2117         }
2118         temp[x] = PyString_AsString(o);
2119     }
2120     return temp;
2121 }
2122
2123 //--------------------------------
2124 // Part of patch from Tim Hochberg
2125 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
2126     if (PyInt_Check(o1) && PyInt_Check(o2)) {
2127         point->x = PyInt_AS_LONG(o1);
2128         point->y = PyInt_AS_LONG(o2);
2129         return true;
2130     }
2131     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
2132         point->x = (int)PyFloat_AS_DOUBLE(o1);
2133         point->y = (int)PyFloat_AS_DOUBLE(o2);
2134         return true;
2135     }
2136     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {  // TODO: Why???
2137         // Disallow instances because they can cause havok
2138         return false;
2139     }
2140     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
2141         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
2142         point->x = PyInt_AsLong(o1);
2143         point->y = PyInt_AsLong(o2);
2144         return true;
2145     }
2146     return false;
2147 }
2148
2149
2150 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
2151     // Putting all of the declarations here allows
2152     // us to put the error handling all in one place.
2153     int x;
2154     wxPoint* temp;
2155     PyObject *o, *o1, *o2;
2156     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2157
2158     if (!PySequence_Check(source)) {
2159         goto error0;
2160     }
2161
2162     // The length of the sequence is returned in count.
2163     *count = PySequence_Length(source);
2164     if (*count < 0) {
2165         goto error0;
2166     }
2167
2168     temp = new wxPoint[*count];
2169     if (!temp) {
2170         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2171         return NULL;
2172     }
2173     for (x=0; x<*count; x++) {
2174         // Get an item: try fast way first.
2175         if (isFast) {
2176             o = PySequence_Fast_GET_ITEM(source, x);
2177         }
2178         else {
2179             o = PySequence_GetItem(source, x);
2180             if (o == NULL) {
2181                 goto error1;
2182             }
2183         }
2184
2185         // Convert o to wxPoint.
2186         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2187             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2188             o1 = PySequence_Fast_GET_ITEM(o, 0);
2189             o2 = PySequence_Fast_GET_ITEM(o, 1);
2190             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2191                 goto error2;
2192             }
2193         }
2194         else if (wxPySwigInstance_Check(o)) {
2195             wxPoint* pt;
2196             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2197                 goto error2;
2198             }
2199             temp[x] = *pt;
2200         }
2201         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2202             o1 = PySequence_GetItem(o, 0);
2203             o2 = PySequence_GetItem(o, 1);
2204             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2205                 goto error3;
2206             }
2207             Py_DECREF(o1);
2208             Py_DECREF(o2);
2209         }
2210         else {
2211             goto error2;
2212         }
2213         // Clean up.
2214         if (!isFast)
2215             Py_DECREF(o);
2216     }
2217     return temp;
2218
2219 error3:
2220     Py_DECREF(o1);
2221     Py_DECREF(o2);
2222 error2:
2223     if (!isFast)
2224         Py_DECREF(o);
2225 error1:
2226     delete [] temp;
2227 error0:
2228     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2229     return NULL;
2230 }
2231 // end of patch
2232 //------------------------------
2233
2234
2235 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2236     if (!PyList_Check(source)) {
2237         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2238         return NULL;
2239     }
2240     int count = PyList_Size(source);
2241     wxBitmap** temp = new wxBitmap*[count];
2242     if (! temp) {
2243         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2244         return NULL;
2245     }
2246     for (int x=0; x<count; x++) {
2247         PyObject* o = PyList_GetItem(source, x);
2248         if (wxPySwigInstance_Check(o)) {
2249             wxBitmap*    pt;
2250             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2251                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2252                 return NULL;
2253             }
2254             temp[x] = pt;
2255         }
2256         else {
2257             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2258             return NULL;
2259         }
2260     }
2261     return temp;
2262 }
2263
2264
2265
2266 wxString* wxString_LIST_helper(PyObject* source) {
2267     if (!PyList_Check(source)) {
2268         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2269         return NULL;
2270     }
2271     int count = PyList_Size(source);
2272     wxString* temp = new wxString[count];
2273     if (! temp) {
2274         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2275         return NULL;
2276     }
2277     for (int x=0; x<count; x++) {
2278         PyObject* o = PyList_GetItem(source, x);
2279 #if PYTHON_API_VERSION >= 1009
2280         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2281             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2282             return NULL;
2283         }
2284 #else
2285         if (! PyString_Check(o)) {
2286             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2287             return NULL;
2288         }
2289 #endif
2290
2291         wxString* pStr = wxString_in_helper(o);
2292         temp[x] = *pStr;
2293         delete pStr;
2294     }
2295     return temp;
2296 }
2297
2298
2299 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2300     if (!PyList_Check(source)) {
2301         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2302         return NULL;
2303     }
2304     int count                = PyList_Size(source);
2305     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2306     if (! temp) {
2307         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2308         return NULL;
2309     }
2310     for (int x=0; x<count; x++) {
2311         PyObject* o = PyList_GetItem(source, x);
2312         if (wxPySwigInstance_Check(o)) {
2313             wxAcceleratorEntry* ae;
2314             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2315                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2316                 return NULL;
2317             }
2318             temp[x] = *ae;
2319         }
2320         else if (PyTuple_Check(o)) {
2321             PyObject* o1 = PyTuple_GetItem(o, 0);
2322             PyObject* o2 = PyTuple_GetItem(o, 1);
2323             PyObject* o3 = PyTuple_GetItem(o, 2);
2324             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2325         }
2326         else {
2327             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2328             return NULL;
2329         }
2330     }
2331     return temp;
2332 }
2333
2334
2335 wxPen** wxPen_LIST_helper(PyObject* source) {
2336     if (!PyList_Check(source)) {
2337         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2338         return NULL;
2339     }
2340     int count = PyList_Size(source);
2341     wxPen** temp = new wxPen*[count];
2342     if (!temp) {
2343         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2344         return NULL;
2345     }
2346     for (int x=0; x<count; x++) {
2347         PyObject* o = PyList_GetItem(source, x);
2348         if (wxPySwigInstance_Check(o)) {
2349             wxPen*  pt;
2350             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2351                 delete temp;
2352                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2353                 return NULL;
2354             }
2355             temp[x] = pt;
2356         }
2357         else {
2358             delete temp;
2359             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2360             return NULL;
2361         }
2362     }
2363     return temp;
2364 }
2365
2366
2367 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2368     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2369     PyObject *o1, *o2;
2370
2371     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2372         return false;
2373
2374     if (isFast) {
2375         o1 = PySequence_Fast_GET_ITEM(source, 0);
2376         o2 = PySequence_Fast_GET_ITEM(source, 1);
2377     }
2378     else {
2379         o1 = PySequence_GetItem(source, 0);
2380         o2 = PySequence_GetItem(source, 1);
2381     }
2382
2383     *i1 = PyInt_AsLong(o1);
2384     *i2 = PyInt_AsLong(o2);
2385
2386     if (! isFast) {
2387         Py_DECREF(o1);
2388         Py_DECREF(o2);
2389     }
2390     return true;
2391 }
2392
2393
2394 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2395     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2396     PyObject *o1, *o2, *o3, *o4;
2397
2398     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2399         return false;
2400
2401     if (isFast) {
2402         o1 = PySequence_Fast_GET_ITEM(source, 0);
2403         o2 = PySequence_Fast_GET_ITEM(source, 1);
2404         o3 = PySequence_Fast_GET_ITEM(source, 2);
2405         o4 = PySequence_Fast_GET_ITEM(source, 3);
2406     }
2407     else {
2408         o1 = PySequence_GetItem(source, 0);
2409         o2 = PySequence_GetItem(source, 1);
2410         o3 = PySequence_GetItem(source, 2);
2411         o4 = PySequence_GetItem(source, 3);
2412     }
2413
2414     *i1 = PyInt_AsLong(o1);
2415     *i2 = PyInt_AsLong(o2);
2416     *i3 = PyInt_AsLong(o3);
2417     *i4 = PyInt_AsLong(o4);
2418
2419     if (! isFast) {
2420         Py_DECREF(o1);
2421         Py_DECREF(o2);
2422         Py_DECREF(o3);
2423         Py_DECREF(o4);
2424     }
2425     return true;
2426 }
2427
2428
2429 //----------------------------------------------------------------------
2430
2431 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2432 {
2433     void* ptr;
2434
2435     if (wxPySwigInstance_Check(source) &&
2436         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2437         return true;
2438
2439     PyErr_Clear();
2440     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2441         return true;
2442
2443     return false;
2444 }
2445
2446 bool wxSize_helper(PyObject* source, wxSize** obj)
2447 {
2448     if (source == Py_None) {
2449         **obj = wxSize(-1,-1);
2450         return true;
2451     }
2452     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2453 }
2454
2455
2456 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2457 {
2458     if (source == Py_None) {
2459         **obj = wxPoint(-1,-1);
2460         return true;
2461     }
2462     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2463 }
2464
2465
2466
2467 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2468
2469     if (source == Py_None) {
2470         **obj = wxRealPoint(-1,-1);
2471         return true;
2472     }
2473
2474     // If source is an object instance then it may already be the right type
2475     if (wxPySwigInstance_Check(source)) {
2476         wxRealPoint* ptr;
2477         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2478             goto error;
2479         *obj = ptr;
2480         return true;
2481     }
2482     // otherwise a 2-tuple of floats is expected
2483     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2484         PyObject* o1 = PySequence_GetItem(source, 0);
2485         PyObject* o2 = PySequence_GetItem(source, 1);
2486         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2487             Py_DECREF(o1);
2488             Py_DECREF(o2);
2489             goto error;
2490         }
2491         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2492         Py_DECREF(o1);
2493         Py_DECREF(o2);
2494         return true;
2495     }
2496
2497  error:
2498     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2499     return false;
2500 }
2501
2502
2503
2504 bool wxRect_helper(PyObject* source, wxRect** obj) {
2505
2506     if (source == Py_None) {
2507         **obj = wxRect(-1,-1,-1,-1);
2508         return true;
2509     }
2510
2511     // If source is an object instance then it may already be the right type
2512     if (wxPySwigInstance_Check(source)) {
2513         wxRect* ptr;
2514         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2515             goto error;
2516         *obj = ptr;
2517         return true;
2518     }
2519     // otherwise a 4-tuple of integers is expected
2520     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2521         PyObject* o1 = PySequence_GetItem(source, 0);
2522         PyObject* o2 = PySequence_GetItem(source, 1);
2523         PyObject* o3 = PySequence_GetItem(source, 2);
2524         PyObject* o4 = PySequence_GetItem(source, 3);
2525         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2526             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2527             Py_DECREF(o1);
2528             Py_DECREF(o2);
2529             Py_DECREF(o3);
2530             Py_DECREF(o4);
2531             goto error;
2532         }
2533         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2534                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2535         Py_DECREF(o1);
2536         Py_DECREF(o2);
2537         Py_DECREF(o3);
2538         Py_DECREF(o4);
2539         return true;
2540     }
2541
2542  error:
2543     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2544     return false;
2545 }
2546
2547
2548
2549 bool wxColour_helper(PyObject* source, wxColour** obj) {
2550
2551     if (source == Py_None) {
2552         **obj = wxNullColour;
2553         return true;
2554     }
2555
2556     // If source is an object instance then it may already be the right type
2557     if (wxPySwigInstance_Check(source)) {
2558         wxColour* ptr;
2559         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2560             goto error;
2561         *obj = ptr;
2562         return true;
2563     }
2564     // otherwise check for a string
2565     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2566         wxString spec = Py2wxString(source);
2567         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2568             long red, green, blue;
2569             red = green = blue = 0;
2570             spec.Mid(1,2).ToLong(&red,   16);
2571             spec.Mid(3,2).ToLong(&green, 16);
2572             spec.Mid(5,2).ToLong(&blue,  16);
2573
2574             **obj = wxColour(red, green, blue);
2575             return true;
2576         }
2577         else {                                       // it's a colour name
2578             **obj = wxColour(spec);
2579             return true;
2580         }
2581     }
2582     // last chance: 3-tuple of integers is expected
2583     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2584         PyObject* o1 = PySequence_GetItem(source, 0);
2585         PyObject* o2 = PySequence_GetItem(source, 1);
2586         PyObject* o3 = PySequence_GetItem(source, 2);
2587         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2588             Py_DECREF(o1);
2589             Py_DECREF(o2);
2590             Py_DECREF(o3);
2591             goto error;
2592         }
2593         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2594         Py_DECREF(o1);
2595         Py_DECREF(o2);
2596         Py_DECREF(o3);
2597         return true;
2598     }
2599
2600  error:
2601     PyErr_SetString(PyExc_TypeError,
2602                     "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
2603     return false;
2604 }
2605
2606
2607 bool wxColour_typecheck(PyObject* source) {
2608
2609     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2610         return true;
2611
2612     if (PyString_Check(source) || PyUnicode_Check(source))
2613         return true;
2614
2615     return false;
2616 }
2617
2618
2619
2620 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2621
2622     if (source == Py_None) {
2623         **obj = wxPoint2D(-1,-1);
2624         return true;
2625     }
2626
2627     // If source is an object instance then it may already be the right type
2628     if (wxPySwigInstance_Check(source)) {
2629         wxPoint2D* ptr;
2630         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2631             goto error;
2632         *obj = ptr;
2633         return true;
2634     }
2635     // otherwise a length-2 sequence of floats is expected
2636     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2637         PyObject* o1 = PySequence_GetItem(source, 0);
2638         PyObject* o2 = PySequence_GetItem(source, 1);
2639         // This should really check for floats, not numbers -- but that would break code.
2640         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2641             Py_DECREF(o1);
2642             Py_DECREF(o2);
2643             goto error;
2644         }
2645         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2646         Py_DECREF(o1);
2647         Py_DECREF(o2);
2648         return true;
2649     }
2650  error:
2651     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2D object.");
2652     return false;
2653 }
2654
2655
2656 //----------------------------------------------------------------------
2657
2658 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
2659
2660     PyObject* list = PyList_New(0);
2661     for (size_t i=0; i < arr.GetCount(); i++) {
2662 #if wxUSE_UNICODE
2663         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2664 #else
2665         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2666 #endif
2667         PyList_Append(list, str);
2668         Py_DECREF(str);
2669     }
2670     return list;
2671 }
2672
2673
2674 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2675
2676     PyObject* list = PyList_New(0);
2677     for (size_t i=0; i < arr.GetCount(); i++) {
2678         PyObject* number = PyInt_FromLong(arr[i]);
2679         PyList_Append(list, number);
2680         Py_DECREF(number);
2681     }
2682     return list;
2683 }
2684
2685
2686 //----------------------------------------------------------------------
2687 //----------------------------------------------------------------------
2688
2689
2690
2691