wxPython/src/helpers.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpers.cpp
   3 // Purpose:     Helper functions/classes for the wxPython extension module
   4 //
   5 // Author:      Robin Dunn
   6 //
   7 // Created:     1-July-1997
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13
  14 #undef DEBUG
  15 #include <Python.h>
  16 #include "wx/wxPython/wxPython_int.h"
  17 #include "wx/wxPython/pyistream.h"
  18 #include "wx/wxPython/swigver.h"
  19
  20 #ifdef __WXMSW__
  21 #include <wx/msw/private.h>
  22 #include <wx/msw/winundef.h>
  23 #include <wx/msw/msvcrt.h>
  24 #endif
  25
  26 #ifdef __WXGTK__
  27 #include <gdk/gdk.h>
  28 #include <gdk/gdkx.h>
  29 #include <gtk/gtk.h>
  30 #include <gdk/gdkprivate.h>
  31 #include <wx/gtk/win_gtk.h>
  32 #define GetXWindow(wxwin) (wxwin)->m_wxwindow ? \
  33                           GDK_WINDOW_XWINDOW(GTK_PIZZA((wxwin)->m_wxwindow)->bin_window) : \
  34                           GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
  35 #include <locale.h>
  36 #endif
  37
  38 #ifdef __WXX11__
  39 #include "wx/x11/privx.h"
  40 #define GetXWindow(wxwin)   ((Window)(wxwin)->GetHandle())
  41 #endif
  42
  43 #ifdef __WXMAC__
  44 #include <wx/mac/private.h>
  45 #endif
  46
  47 #include <wx/clipbrd.h>
  48 #include <wx/mimetype.h>
  49 #include <wx/image.h>
  50
  51 //----------------------------------------------------------------------
  52
  53 #if PYTHON_API_VERSION < 1009 && wxUSE_UNICODE
  54 #error Python must support Unicode to use wxWindows Unicode
  55 #endif
  56
  57 //----------------------------------------------------------------------
  58
  59 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  60 bool wxPyDoCleanup = false;
  61 bool wxPyDoingCleanup = false;
  62
  63
  64 #ifdef WXP_WITH_THREAD
  65 #if !wxPyUSE_GIL_STATE
  66 struct wxPyThreadState {
  67     unsigned long  tid;
  68     PyThreadState* tstate;
  69
  70     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  71         : tid(_tid), tstate(_tstate) {}
  72 };
  73
  74 #include <wx/dynarray.h>
  75 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  76 #include <wx/arrimpl.cpp>
  77 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  78
  79 wxPyThreadStateArray* wxPyTStates = NULL;
  80 wxMutex*              wxPyTMutex = NULL;
  81
  82 #endif
  83 #endif
  84
  85
  86 #define DEFAULTENCODING_SIZE 64
  87 static char wxPyDefaultEncoding[DEFAULTENCODING_SIZE] = "ascii";
  88
  89 static PyObject* wxPython_dict = NULL;
  90 static PyObject* wxPyAssertionError = NULL;
  91 static PyObject* wxPyNoAppError = NULL;
  92
  93 PyObject* wxPyPtrTypeMap = NULL;
  94
  95
  96 #ifdef __WXMSW__             // If building for win32...
  97 //----------------------------------------------------------------------
  98 // This gets run when the DLL is loaded.  We just need to save a handle.
  99 //----------------------------------------------------------------------
 100
 101 extern "C"
 102 BOOL WINAPI DllMain(
 103     HINSTANCE   hinstDLL,    // handle to DLL module
 104     DWORD       fdwReason,   // reason for calling function
 105     LPVOID      lpvReserved  // reserved
 106    )
 107 {
 108     // If wxPython is embedded in another wxWidgets app then
 109     // the instance has already been set.
 110     if (! wxGetInstance())
 111         wxSetInstance(hinstDLL);
 112     return true;
 113 }
 114 #endif
 115
 116 //----------------------------------------------------------------------
 117 // Classes for implementing the wxp main application shell.
 118 //----------------------------------------------------------------------
 119
 120 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 121
 122
 123 wxPyApp::wxPyApp() {
 124     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 125     m_startupComplete = false;
 126 }
 127
 128
 129 wxPyApp::~wxPyApp() {
 130     wxPythonApp = NULL;
 131     wxApp::SetInstance(NULL);
 132 }
 133
 134
 135 // This one isn't acutally called...  We fake it with _BootstrapApp
 136 bool wxPyApp::OnInit() {
 137     return false;
 138 }
 139
 140
 141 int  wxPyApp::MainLoop() {
 142     int retval = 0;
 143
 144     DeletePendingObjects();
 145     bool initialized = wxTopLevelWindows.GetCount() != 0;
 146     if (initialized) {
 147         if ( m_exitOnFrameDelete == Later ) {
 148             m_exitOnFrameDelete = Yes;
 149         }
 150
 151         retval = wxApp::MainLoop();
 152         OnExit();
 153     }
 154     return retval;
 155 }
 156
 157
 158 bool wxPyApp::OnInitGui() {
 159     bool rval=true;
 160     wxApp::OnInitGui();  // in this case always call the base class version
 161     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 162     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 163         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 164     wxPyEndBlockThreads(blocked);
 165     return rval;
 166 }
 167
 168
 169 int wxPyApp::OnExit() {
 170     int rval=0;
 171     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 172     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 173         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 174     wxPyEndBlockThreads(blocked);
 175     wxApp::OnExit();  // in this case always call the base class version
 176     return rval;
 177 }
 178
 179
 180 #ifdef __WXDEBUG__
 181 void wxPyApp::OnAssert(const wxChar *file,
 182                      int line,
 183                      const wxChar *cond,
 184                      const wxChar *msg) {
 185
 186     // if we're not fully initialized then just log the error
 187     if (! m_startupComplete) {
 188         wxString buf;
 189         buf.Alloc(4096);
 190         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 191                    file, line, cond);
 192         if (msg != NULL) {
 193             buf += wxT(": ");
 194             buf += msg;
 195         }
 196         wxLogDebug(buf);
 197         return;
 198     }
 199
 200     // If the OnAssert is overloaded in the Python class then call it...
 201     bool found;
 202     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 203     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 204         PyObject* fso = wx2PyString(file);
 205         PyObject* cso = wx2PyString(file);
 206         PyObject* mso;
 207         if (msg != NULL)
 208             mso = wx2PyString(file);
 209         else {
 210             mso = Py_None; Py_INCREF(Py_None);
 211         }
 212         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 213         Py_DECREF(fso);
 214         Py_DECREF(cso);
 215         Py_DECREF(mso);
 216     }
 217     wxPyEndBlockThreads(blocked);
 218
 219     // ...otherwise do our own thing with it
 220     if (! found) {
 221         // ignore it?
 222         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 223             return;
 224
 225         // turn it into a Python exception?
 226         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 227             wxString buf;
 228             buf.Alloc(4096);
 229             buf.Printf(wxT("C++ assertion \"%s\" failed in %s(%d)"), cond, file, line);
 230             if (msg != NULL) {
 231                 buf += wxT(": ");
 232                 buf += msg;
 233             }
 234
 235             // set the exception
 236             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 237             PyObject* s = wx2PyString(buf);
 238             PyErr_SetObject(wxPyAssertionError, s);
 239             Py_DECREF(s);
 240             wxPyEndBlockThreads(blocked);
 241
 242             // Now when control returns to whatever API wrapper was called from
 243             // Python it should detect that an exception is set and will return
 244             // NULL, signalling the exception to Python.
 245         }
 246
 247         // Send it to the normal log destination, but only if
 248         // not _DIALOG because it will call this too
 249         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 250             wxString buf;
 251             buf.Alloc(4096);
 252             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 253                        file, line, cond);
 254             if (msg != NULL) {
 255                 buf += wxT(": ");
 256                 buf += msg;
 257             }
 258             wxLogDebug(buf);
 259         }
 260
 261         // do the normal wx assert dialog?
 262         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 263             wxApp::OnAssert(file, line, cond, msg);
 264     }
 265 }
 266 #endif
 267
 268     // For catching Apple Events
 269 void wxPyApp::MacOpenFile(const wxString &fileName)
 270 {
 271     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 272     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 273         PyObject* s = wx2PyString(fileName);
 274         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 275         Py_DECREF(s);
 276     }
 277     wxPyEndBlockThreads(blocked);
 278 }
 279
 280 void wxPyApp::MacPrintFile(const wxString &fileName)
 281 {
 282     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 283     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 284         PyObject* s = wx2PyString(fileName);
 285         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 286         Py_DECREF(s);
 287     }
 288     wxPyEndBlockThreads(blocked);
 289 }
 290
 291 void wxPyApp::MacNewFile()
 292 {
 293     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 294     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 295         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 296     wxPyEndBlockThreads(blocked);
 297 }
 298
 299 void wxPyApp::MacReopenApp()
 300 {
 301     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 302     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 303         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 304     wxPyEndBlockThreads(blocked);
 305 }
 306
 307
 308 /*static*/
 309 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 310 #ifdef __WXMAC__
 311     return s_macSupportPCMenuShortcuts;
 312 #else
 313     return 0;
 314 #endif
 315 }
 316
 317 /*static*/
 318 long wxPyApp::GetMacAboutMenuItemId() {
 319 #ifdef __WXMAC__
 320     return s_macAboutMenuItemId;
 321 #else
 322     return 0;
 323 #endif
 324 }
 325
 326 /*static*/
 327 long wxPyApp::GetMacPreferencesMenuItemId() {
 328 #ifdef __WXMAC__
 329     return s_macPreferencesMenuItemId;
 330 #else
 331     return 0;
 332 #endif
 333 }
 334
 335 /*static*/
 336 long wxPyApp::GetMacExitMenuItemId() {
 337 #ifdef __WXMAC__
 338     return s_macExitMenuItemId;
 339 #else
 340     return 0;
 341 #endif
 342 }
 343
 344 /*static*/
 345 wxString wxPyApp::GetMacHelpMenuTitleName() {
 346 #ifdef __WXMAC__
 347     return s_macHelpMenuTitleName;
 348 #else
 349     return wxEmptyString;
 350 #endif
 351 }
 352
 353 /*static*/
 354 void wxPyApp::SetMacSupportPCMenuShortcuts(bool val) {
 355 #ifdef __WXMAC__
 356     s_macSupportPCMenuShortcuts = val;
 357 #endif
 358 }
 359
 360 /*static*/
 361 void wxPyApp::SetMacAboutMenuItemId(long val) {
 362 #ifdef __WXMAC__
 363     s_macAboutMenuItemId = val;
 364 #endif
 365 }
 366
 367 /*static*/
 368 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 369 #ifdef __WXMAC__
 370     s_macPreferencesMenuItemId = val;
 371 #endif
 372 }
 373
 374 /*static*/
 375 void wxPyApp::SetMacExitMenuItemId(long val) {
 376 #ifdef __WXMAC__
 377     s_macExitMenuItemId = val;
 378 #endif
 379 }
 380
 381 /*static*/
 382 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 383 #ifdef __WXMAC__
 384     s_macHelpMenuTitleName = val;
 385 #endif
 386 }
 387
 388
 389 // This finishes the initialization of wxWindows and then calls the OnInit
 390 // that should be present in the derived (Python) class.
 391 void wxPyApp::_BootstrapApp()
 392 {
 393     static      bool haveInitialized = false;
 394     bool        result;
 395     wxPyBlock_t     blocked;
 396     PyObject*   retval = NULL;
 397     PyObject*   pyint  = NULL;
 398
 399
 400     // Only initialize wxWidgets once
 401     if (! haveInitialized) {
 402
 403         // Get any command-line args passed to this program from the sys module
 404         int    argc = 0;
 405         char** argv = NULL;
 406         blocked = wxPyBeginBlockThreads();
 407
 408         PyObject* sysargv = PySys_GetObject("argv");
 409         PyObject* executable = PySys_GetObject("executable");
 410
 411         if (sysargv != NULL && executable != NULL) {
 412             argc = PyList_Size(sysargv) + 1;
 413             argv = new char*[argc+1];
 414             argv[0] = strdup(PyString_AsString(executable));
 415             int x;
 416             for(x=1; x<argc; x++) {
 417                 PyObject *pyArg = PyList_GetItem(sysargv, x-1);
 418                 argv[x] = strdup(PyString_AsString(pyArg));
 419             }
 420             argv[argc] = NULL;
 421         }
 422         wxPyEndBlockThreads(blocked);
 423
 424         // Initialize wxWidgets
 425         result = wxEntryStart(argc, argv);
 426         // wxApp takes ownership of the argv array, don't delete it here
 427
 428         blocked = wxPyBeginBlockThreads();
 429         if (! result)  {
 430             PyErr_SetString(PyExc_SystemError,
 431                             "wxEntryStart failed, unable to initialize wxWidgets!"
 432 #ifdef __WXGTK__
 433                             "  (Is DISPLAY set properly?)"
 434 #endif
 435                 );
 436             goto error;
 437         }
 438
 439         // On wxGTK the locale will be changed to match the system settings,
 440         // but Python before 2.4 needs to have LC_NUMERIC set to "C" in order
 441         // for the floating point conversions and such to work right.
 442 #if defined(__WXGTK__) && PY_VERSION_HEX < 0x02040000
 443         setlocale(LC_NUMERIC, "C");
 444 #endif
 445
 446 //        wxSystemOptions::SetOption(wxT("mac.textcontrol-use-mlte"), 1);
 447
 448         // The stock objects were all NULL when they were loaded into
 449         // SWIG generated proxies, so re-init those now...
 450         wxPy_ReinitStockObjects(3);
 451
 452         wxPyEndBlockThreads(blocked);
 453         haveInitialized = true;
 454     }
 455     else {
 456         this->argc = 0;
 457         this->argv = NULL;
 458     }
 459
 460
 461     // It's now ok to generate exceptions for assertion errors.
 462     wxPythonApp->SetStartupComplete(true);
 463
 464     // Call the Python wxApp's OnInit function
 465     blocked = wxPyBeginBlockThreads();
 466     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 467
 468         PyObject* method = m_myInst.GetLastFound();
 469         PyObject* argTuple = PyTuple_New(0);
 470         retval = PyEval_CallObject(method, argTuple);
 471         Py_DECREF(argTuple);
 472         Py_DECREF(method);
 473         if (retval == NULL)
 474             goto error;
 475
 476         pyint = PyNumber_Int(retval);
 477         if (! pyint) {
 478             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 479             goto error;
 480         }
 481         result = PyInt_AS_LONG(pyint);
 482     }
 483     else {
 484         // Is it okay if there is no OnInit?  Probably so...
 485         result = true;
 486     }
 487
 488     if (! result) {
 489         PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
 490     }
 491
 492  error:
 493     Py_XDECREF(retval);
 494     Py_XDECREF(pyint);
 495
 496     wxPyEndBlockThreads(blocked);
 497 };
 498
 499 //---------------------------------------------------------------------
 500 //----------------------------------------------------------------------
 501
 502
 503 #if 0
 504 static char* wxPyCopyCString(const wxChar* src)
 505 {
 506     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 507     size_t len = strlen(buff);
 508     char*  dest = new char[len+1];
 509     strcpy(dest, buff);
 510     return dest;
 511 }
 512
 513 #if wxUSE_UNICODE
 514 static char* wxPyCopyCString(const char* src)   // we need a char version too
 515 {
 516     size_t len = strlen(src);
 517     char*  dest = new char[len+1];
 518     strcpy(dest, src);
 519     return dest;
 520 }
 521 #endif
 522
 523 static wxChar* wxPyCopyWString(const char *src)
 524 {
 525     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 526     wxString str(src, *wxConvCurrent);
 527     return copystring(str);
 528 }
 529
 530 #if wxUSE_UNICODE
 531 static wxChar* wxPyCopyWString(const wxChar *src)
 532 {
 533     return copystring(src);
 534 }
 535 #endif
 536 #endif
 537
 538
 539 inline const char* dropwx(const char* name) {
 540     if (name[0] == 'w' && name[1] == 'x')
 541         return name+2;
 542     else
 543         return name;
 544 }
 545
 546 //----------------------------------------------------------------------
 547
 548 // This function is called when the wx._core_ module is imported to do some
 549 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 550 // wxPyApp::_BootstrapApp
 551 void __wxPyPreStart(PyObject* moduleDict)
 552 {
 553
 554 #ifdef __WXMSW__
 555 //     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF
 556 //                     | _CRTDBG_CHECK_ALWAYS_DF
 557 //                     | _CRTDBG_DELAY_FREE_MEM_DF
 558 //         );
 559 #endif
 560
 561 #ifdef WXP_WITH_THREAD
 562 #if wxPyUSE_GIL_STATE
 563     PyEval_InitThreads();
 564 #else
 565     PyEval_InitThreads();
 566     wxPyTStates = new wxPyThreadStateArray;
 567     wxPyTMutex = new wxMutex;
 568
 569     // Save the current (main) thread state in our array
 570     PyThreadState* tstate = wxPyBeginAllowThreads();
 571     wxPyEndAllowThreads(tstate);
 572 #endif
 573 #endif
 574
 575     // Ensure that the build options in the DLL (or whatever) match this build
 576     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 577
 578     // Init the stock objects to a non-NULL value so SWIG doesn't create them as None
 579     wxPy_ReinitStockObjects(1);
 580
 581     wxInitAllImageHandlers();
 582 }
 583
 584
 585
 586 void __wxPyCleanup() {
 587     wxPyDoingCleanup = true;
 588     if (wxPyDoCleanup) {
 589         wxPyDoCleanup = false;
 590         wxEntryCleanup();
 591     }
 592 #ifdef WXP_WITH_THREAD
 593 #if !wxPyUSE_GIL_STATE
 594     delete wxPyTMutex;
 595     wxPyTMutex = NULL;
 596     wxPyTStates->Empty();
 597     delete wxPyTStates;
 598     wxPyTStates = NULL;
 599 #endif
 600 #endif
 601 }
 602
 603
 604 // Save a reference to the dictionary of the wx._core module, and inject
 605 // a few more things into it.
 606 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 607 {
 608
 609     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 610         return NULL;
 611
 612     if (!PyDict_Check(wxPython_dict)) {
 613         PyErr_SetString(PyExc_TypeError,
 614                         "_wxPySetDictionary must have dictionary object!");
 615         return NULL;
 616     }
 617
 618     if (! wxPyPtrTypeMap)
 619         wxPyPtrTypeMap = PyDict_New();
 620     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 621
 622     // Create an exception object to use for wxASSERTions
 623     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 624                                             PyExc_AssertionError, NULL);
 625     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 626
 627     // Create an exception object to use when the app object hasn't been created yet
 628     wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
 629                                         PyExc_RuntimeError, NULL);
 630     PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
 631
 632
 633
 634 #ifdef __WXMOTIF__
 635 #define wxPlatform "__WXMOTIF__"
 636 #define wxPlatName "wxMotif"
 637 #endif
 638 #ifdef __WXX11__
 639 #define wxPlatform "__WXX11__"
 640 #define wxPlatName "wxX11"
 641 #endif
 642 #ifdef __WXGTK__
 643 #define wxPlatform "__WXGTK__"
 644 #define wxPlatName "wxGTK"
 645 #endif
 646 #ifdef __WXMSW__
 647 #define wxPlatform "__WXMSW__"
 648 #define wxPlatName "wxMSW"
 649 #endif
 650 #ifdef __WXMAC__
 651 #define wxPlatform "__WXMAC__"
 652 #define wxPlatName "wxMac"
 653 #endif
 654
 655 #ifdef __WXDEBUG__
 656     int wxdebug = 1;
 657 #else
 658     int wxdebug = 0;
 659 #endif
 660
 661     // These should be deprecated in favor of the PlatformInfo tuple built below...
 662     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 663     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 664     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 665
 666     // Make a tuple of strings that gives more info about the platform.
 667     PyObject* PlatInfo = PyList_New(0);
 668     PyObject* obj;
 669
 670 #define _AddInfoString(st) \
 671     obj = PyString_FromString(st); \
 672     PyList_Append(PlatInfo, obj); \
 673     Py_DECREF(obj)
 674
 675     _AddInfoString(wxPlatform);
 676     _AddInfoString(wxPlatName);
 677 #if wxUSE_UNICODE
 678     _AddInfoString("unicode");
 679 #else
 680     _AddInfoString("ansi");
 681 #endif
 682 #ifdef __WXGTK__
 683 #ifdef __WXGTK20__
 684     _AddInfoString("gtk2");
 685 #else
 686     _AddInfoString("gtk1");
 687 #endif
 688 #endif
 689 #ifdef __WXDEBUG__
 690     _AddInfoString("wx-assertions-on");
 691 #else
 692     _AddInfoString("wx-assertions-off");
 693 #endif
 694     _AddInfoString(wxPy_SWIG_VERSION);
 695
 696 #undef _AddInfoString
 697
 698     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 699     Py_DECREF(PlatInfo);
 700     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 701
 702     RETURN_NONE();
 703 }
 704
 705
 706
 707 //---------------------------------------------------------------------------
 708
 709 // The stock objects are no longer created when the wx._core_ module is
 710 // imported, but only after the app object has been created.  The
 711 // wxPy_ReinitStockObjects function will be called 3 times to pass the stock
 712 // objects though various stages of evolution:
 713 //
 714 //   pass 1: Set all the pointers to a non-NULL value so the Python proxy
 715 //           object will be created (otherwise SWIG will just use None.)
 716 //
 717 //   pass 2: After the module has been imported and the python proxys have
 718 //           been created, then set the __class__ to be _wxPyUnbornObject so
 719 //           it will catch any access to the object and will raise an exception.
 720 //
 721 //   pass 3: Finally, from BootstrapApp patch things up so the stock objects
 722 //           can be used.
 723
 724
 725 PyObject* __wxPyFixStockObjects(PyObject* /* self */, PyObject* args)
 726 {
 727     wxPy_ReinitStockObjects(2);
 728     RETURN_NONE();
 729 }
 730
 731
 732 static void rsoPass2(const char* name)
 733 {
 734     static PyObject* unbornObjectClass = NULL;
 735     PyObject* obj;
 736
 737     if (unbornObjectClass == NULL) {
 738         unbornObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyUnbornObject");
 739         Py_INCREF(unbornObjectClass);
 740     }
 741
 742     // Find the object instance
 743     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 744     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 745     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 746
 747     // Change its class
 748     PyObject_SetAttrString(obj, "__class__",  unbornObjectClass);
 749
 750 }
 751
 752 static void rsoPass3(const char* name, const char* classname, void* ptr)
 753 {
 754     PyObject* obj;
 755     PyObject* classobj;
 756     PyObject* ptrobj;
 757
 758     // Find the object instance
 759     obj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(name));
 760     wxCHECK_RET(obj != NULL, wxT("Unable to find stock object"));
 761     wxCHECK_RET(wxPySwigInstance_Check(obj), wxT("Not a swig instance"));
 762
 763     // Find the class object and put it back in the instance
 764     classobj = PyDict_GetItemString(wxPython_dict, (char*)dropwx(classname));
 765     wxCHECK_RET(classobj != NULL, wxT("Unable to find stock class object"));
 766     PyObject_SetAttrString(obj, "__class__",  classobj);
 767
 768     // Rebuild the .this swigified pointer with the new value of the C++ pointer
 769     ptrobj = wxPyMakeSwigPtr(ptr, wxString(classname, *wxConvCurrent));
 770     PyObject_SetAttrString(obj, "this", ptrobj);
 771     Py_DECREF(ptrobj);
 772 }
 773
 774
 775
 776 void wxPy_ReinitStockObjects(int pass)
 777 {
 778
 779     // If there is already an App object then wxPython is probably embedded in
 780     // a wx C++ application, so there is no need to do all this.
 781     static bool embedded = false;
 782     if ((pass == 1 || pass == 2) && wxTheApp) {
 783         embedded = true;
 784         return;
 785     }
 786     if (pass == 3 && embedded)
 787         return;
 788
 789
 790 #define REINITOBJ(name, classname) \
 791     if (pass == 1) { name = (classname*)0xC0C0C0C0; } \
 792     else if (pass == 2) { rsoPass2(#name); } \
 793     else if (pass == 3) { rsoPass3(#name, #classname, (void*)name); }
 794
 795
 796 #define REINITOBJ2(name, classname) \
 797     if (pass == 1) { } \
 798     else if (pass == 2) { rsoPass2(#name); } \
 799     else if (pass == 3) { rsoPass3(#name, #classname, (void*)&name); }
 800
 801
 802     REINITOBJ(wxNORMAL_FONT, wxFont);
 803     REINITOBJ(wxSMALL_FONT, wxFont);
 804     REINITOBJ(wxITALIC_FONT, wxFont);
 805     REINITOBJ(wxSWISS_FONT, wxFont);
 806
 807     REINITOBJ(wxRED_PEN, wxPen);
 808     REINITOBJ(wxCYAN_PEN, wxPen);
 809     REINITOBJ(wxGREEN_PEN, wxPen);
 810     REINITOBJ(wxBLACK_PEN, wxPen);
 811     REINITOBJ(wxWHITE_PEN, wxPen);
 812     REINITOBJ(wxTRANSPARENT_PEN, wxPen);
 813     REINITOBJ(wxBLACK_DASHED_PEN, wxPen);
 814     REINITOBJ(wxGREY_PEN, wxPen);
 815     REINITOBJ(wxMEDIUM_GREY_PEN, wxPen);
 816     REINITOBJ(wxLIGHT_GREY_PEN, wxPen);
 817
 818     REINITOBJ(wxBLUE_BRUSH, wxBrush);
 819     REINITOBJ(wxGREEN_BRUSH, wxBrush);
 820     REINITOBJ(wxWHITE_BRUSH, wxBrush);
 821     REINITOBJ(wxBLACK_BRUSH, wxBrush);
 822     REINITOBJ(wxTRANSPARENT_BRUSH, wxBrush);
 823     REINITOBJ(wxCYAN_BRUSH, wxBrush);
 824     REINITOBJ(wxRED_BRUSH, wxBrush);
 825     REINITOBJ(wxGREY_BRUSH, wxBrush);
 826     REINITOBJ(wxMEDIUM_GREY_BRUSH, wxBrush);
 827     REINITOBJ(wxLIGHT_GREY_BRUSH, wxBrush);
 828
 829     REINITOBJ(wxBLACK, wxColour);
 830     REINITOBJ(wxWHITE, wxColour);
 831     REINITOBJ(wxRED, wxColour);
 832     REINITOBJ(wxBLUE, wxColour);
 833     REINITOBJ(wxGREEN, wxColour);
 834     REINITOBJ(wxCYAN, wxColour);
 835     REINITOBJ(wxLIGHT_GREY, wxColour);
 836
 837     REINITOBJ(wxSTANDARD_CURSOR, wxCursor);
 838     REINITOBJ(wxHOURGLASS_CURSOR, wxCursor);
 839     REINITOBJ(wxCROSS_CURSOR, wxCursor);
 840
 841     REINITOBJ2(wxNullBitmap, wxBitmap);
 842     REINITOBJ2(wxNullIcon, wxIcon);
 843     REINITOBJ2(wxNullCursor, wxCursor);
 844     REINITOBJ2(wxNullPen, wxPen);
 845     REINITOBJ2(wxNullBrush, wxBrush);
 846     REINITOBJ2(wxNullPalette, wxPalette);
 847     REINITOBJ2(wxNullFont, wxFont);
 848     REINITOBJ2(wxNullColour, wxColour);
 849
 850     REINITOBJ(wxTheFontList, wxFontList);
 851     REINITOBJ(wxThePenList, wxPenList);
 852     REINITOBJ(wxTheBrushList, wxBrushList);
 853     REINITOBJ(wxTheColourDatabase, wxColourDatabase);
 854
 855
 856     REINITOBJ2(wxDefaultValidator, wxValidator);
 857     REINITOBJ2(wxNullImage, wxImage);
 858     REINITOBJ2(wxNullAcceleratorTable, wxAcceleratorTable);
 859
 860 #undef REINITOBJ
 861 #undef REINITOBJ2
 862 }
 863
 864 //---------------------------------------------------------------------------
 865
 866 // Check for existence of a wxApp, setting an exception if there isn't one.
 867 // This doesn't need to aquire the GIL because it should only be called from
 868 // an %exception before the lock is released.
 869
 870 bool wxPyCheckForApp() {
 871     if (wxTheApp != NULL)
 872         return true;
 873     else {
 874         PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
 875         return false;
 876     }
 877 }
 878
 879 //---------------------------------------------------------------------------
 880
 881 void wxPyUserData_dtor(wxPyUserData* self) {
 882     if (! wxPyDoingCleanup) {
 883         wxPyBlock_t blocked = wxPyBeginBlockThreads();
 884         Py_DECREF(self->m_obj);
 885         self->m_obj = NULL;
 886         wxPyEndBlockThreads(blocked);
 887     }
 888 }
 889
 890
 891 void wxPyClientData_dtor(wxPyClientData* self) {
 892     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 893                                         // may have already garbage collected the object...
 894         if (self->m_incRef) {
 895             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 896             Py_DECREF(self->m_obj);
 897             wxPyEndBlockThreads(blocked);
 898         }
 899         self->m_obj = NULL;
 900     }
 901 }
 902
 903
 904
 905 // This is called when an OOR controled object is being destroyed.  Although
 906 // the C++ object is going away there is no way to force the Python object
 907 // (and all references to it) to die too.  This causes problems (crashes) in
 908 // wxPython when a python shadow object attempts to call a C++ method using
 909 // the now bogus pointer... So to try and prevent this we'll do a little black
 910 // magic and change the class of the python instance to a class that will
 911 // raise an exception for any attempt to call methods with it.  See
 912 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 913 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 914
 915     static PyObject* deadObjectClass = NULL;
 916
 917     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 918     if (deadObjectClass == NULL) {
 919         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 920         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 921         // will lead to a deadlock when it tries to aquire the GIL again.
 922         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 923         Py_INCREF(deadObjectClass);
 924     }
 925
 926
 927     // Only if there is more than one reference to the object and we are
 928     // holding the OOR reference:
 929     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
 930         // bool isInstance = wxPyInstance_Check(self->m_obj);
 931         // TODO same here
 932         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 933
 934         // Call __del__, if there is one.
 935         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 936         if (func) {
 937             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 938             Py_XDECREF(rv);
 939             Py_DECREF(func);
 940         }
 941         if (PyErr_Occurred())
 942             PyErr_Clear();      // just ignore it for now
 943
 944
 945         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 946         if (dict) {
 947             // Clear the instance's dictionary
 948             PyDict_Clear(dict);
 949
 950             // put the name of the old class into the instance, and then reset the
 951             // class to be the dead class.
 952             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 953             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 954             PyDict_SetItemString(dict, "_name", name);
 955             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 956             //Py_INCREF(deadObjectClass);
 957             Py_DECREF(klass);
 958             Py_DECREF(name);
 959         }
 960     }
 961
 962     // m_obj is DECREF'd in the base class dtor...
 963     wxPyEndBlockThreads(blocked);
 964 }
 965
 966
 967 //---------------------------------------------------------------------------
 968 // Stuff used by OOR to find the right wxPython class type to return and to
 969 // build it.
 970
 971
 972 // The pointer type map is used when the "pointer" type name generated by SWIG
 973 // is not the same as the shadow class name, for example wxPyTreeCtrl
 974 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 975 // so we'll just make it a Python dictionary in the wx module's namespace.
 976 // (See __wxSetDictionary)
 977 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 978     if (! wxPyPtrTypeMap)
 979         wxPyPtrTypeMap = PyDict_New();
 980     PyDict_SetItemString(wxPyPtrTypeMap,
 981                          (char*)commonName,
 982                          PyString_FromString((char*)ptrName));
 983 }
 984
 985
 986
 987
 988 PyObject*  wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
 989     PyObject* target = NULL;
 990     bool      isEvtHandler = false;
 991     bool      isSizer = false;
 992
 993     if (source) {
 994         // If it's derived from wxEvtHandler then there may
 995         // already be a pointer to a Python object that we can use
 996         // in the OOR data.
 997         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 998             isEvtHandler = true;
 999             wxEvtHandler* eh = (wxEvtHandler*)source;
1000             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
1001             if (data) {
1002                 target = data->m_obj;
1003                 if (target)
1004                     Py_INCREF(target);
1005             }
1006         }
1007
1008         // Also check for wxSizer
1009         if (!target && wxIsKindOf(source, wxSizer)) {
1010             isSizer = true;
1011             wxSizer* sz = (wxSizer*)source;
1012             wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
1013             if (data) {
1014                 target = data->m_obj;
1015                 if (target)
1016                     Py_INCREF(target);
1017             }
1018         }
1019
1020         if (! target) {
1021             // Otherwise make it the old fashioned way by making a new shadow
1022             // object and putting this pointer in it.  Look up the class
1023             // heirarchy until we find a class name that is located in the
1024             // python module.
1025             const wxClassInfo* info   = source->GetClassInfo();
1026             wxString           name   = info->GetClassName();
1027             bool               exists = wxPyCheckSwigType(name);
1028             while (info && !exists) {
1029                 info = info->GetBaseClass1();
1030                 name = info->GetClassName();
1031                 exists = wxPyCheckSwigType(name);
1032             }
1033             if (info) {
1034                 target = wxPyConstructObject((void*)source, name, setThisOwn);
1035                 if (target && isEvtHandler)
1036                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
1037                 if (target && isSizer)
1038                     ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
1039             } else {
1040                 wxString msg(wxT("wxPython class not found for "));
1041                 msg += source->GetClassInfo()->GetClassName();
1042                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
1043                 target = NULL;
1044             }
1045         }
1046     } else {  // source was NULL so return None.
1047         Py_INCREF(Py_None); target = Py_None;
1048     }
1049     return target;
1050 }
1051
1052
1053 PyObject*  wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
1054
1055     return wxPyMake_wxObject(source, setThisOwn);
1056 }
1057
1058
1059 //---------------------------------------------------------------------------
1060
1061
1062 #ifdef WXP_WITH_THREAD
1063 #if !wxPyUSE_GIL_STATE
1064
1065 inline
1066 unsigned long wxPyGetCurrentThreadId() {
1067     return wxThread::GetCurrentId();
1068 }
1069
1070 static wxPyThreadState gs_shutdownTState;
1071
1072 static
1073 wxPyThreadState* wxPyGetThreadState() {
1074     if (wxPyTMutex == NULL) // Python is shutting down...
1075         return &gs_shutdownTState;
1076
1077     unsigned long ctid = wxPyGetCurrentThreadId();
1078     wxPyThreadState* tstate = NULL;
1079
1080     wxPyTMutex->Lock();
1081     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1082         wxPyThreadState& info = wxPyTStates->Item(i);
1083         if (info.tid == ctid) {
1084             tstate = &info;
1085             break;
1086         }
1087     }
1088     wxPyTMutex->Unlock();
1089     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
1090     return tstate;
1091 }
1092
1093
1094 static
1095 void wxPySaveThreadState(PyThreadState* tstate) {
1096     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
1097         gs_shutdownTState.tstate = tstate;
1098         return;
1099     }
1100     unsigned long ctid = wxPyGetCurrentThreadId();
1101     wxPyTMutex->Lock();
1102     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
1103         wxPyThreadState& info = wxPyTStates->Item(i);
1104         if (info.tid == ctid) {
1105 #if 0
1106             if (info.tstate != tstate)
1107                 wxLogMessage("*** tstate mismatch!???");
1108 #endif
1109             info.tstate = tstate;    // allow for transient tstates
1110             // Normally it will never change, but apparently COM callbacks
1111             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
1112             // tstate which will then be garbage the next time we try to use
1113             // it...
1114
1115             wxPyTMutex->Unlock();
1116             return;
1117         }
1118     }
1119     // not found, so add it...
1120     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
1121     wxPyTMutex->Unlock();
1122 }
1123
1124 #endif
1125 #endif
1126
1127
1128
1129 // Calls from Python to wxWindows code are wrapped in calls to these
1130 // functions:
1131
1132 PyThreadState* wxPyBeginAllowThreads() {
1133 #ifdef WXP_WITH_THREAD
1134     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1135 #if !wxPyUSE_GIL_STATE
1136     wxPySaveThreadState(saved);
1137 #endif
1138     return saved;
1139 #else
1140     return NULL;
1141 #endif
1142 }
1143
1144 void wxPyEndAllowThreads(PyThreadState* saved) {
1145 #ifdef WXP_WITH_THREAD
1146     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1147 #endif
1148 }
1149
1150
1151
1152 // Calls from wxWindows back to Python code, or even any PyObject
1153 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1154
1155 wxPyBlock_t wxPyBeginBlockThreads() {
1156 #ifdef WXP_WITH_THREAD
1157     if (! Py_IsInitialized()) {
1158         return (wxPyBlock_t)0;
1159     }
1160 #if wxPyUSE_GIL_STATE
1161     PyGILState_STATE state = PyGILState_Ensure();
1162     return state;
1163 #else
1164     PyThreadState *current = _PyThreadState_Current;
1165
1166     // Only block if there wasn't already a tstate, or if the current one is
1167     // not the one we are wanting to change to.  This should prevent deadlock
1168     // if there are nested calls to wxPyBeginBlockThreads
1169     wxPyBlock_t blocked = false;
1170     wxPyThreadState* tstate = wxPyGetThreadState();
1171     if (current != tstate->tstate) {
1172         PyEval_RestoreThread(tstate->tstate);
1173         blocked = true;
1174     }
1175     return blocked;
1176 #endif
1177 #else
1178     return (wxPyBlock_t)0;
1179 #endif
1180 }
1181
1182
1183 void wxPyEndBlockThreads(wxPyBlock_t blocked) {
1184 #ifdef WXP_WITH_THREAD
1185     if (! Py_IsInitialized()) {
1186         return;
1187     }
1188 #if wxPyUSE_GIL_STATE
1189     PyGILState_Release(blocked);
1190 #else
1191     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1192     // The value of blocked passed in needs to be the same as that returned
1193     // from wxPyBeginBlockThreads at the same nesting level.
1194     if ( blocked ) {
1195         PyEval_SaveThread();
1196     }
1197 #endif
1198 #endif
1199 }
1200
1201
1202 //---------------------------------------------------------------------------
1203 // wxPyInputStream and wxPyCBInputStream methods
1204
1205
1206 void wxPyInputStream::close() {
1207     /* do nothing for now */
1208 }
1209
1210 void wxPyInputStream::flush() {
1211     /* do nothing for now */
1212 }
1213
1214 bool wxPyInputStream::eof() {
1215     if (m_wxis)
1216         return m_wxis->Eof();
1217     else
1218         return true;
1219 }
1220
1221 wxPyInputStream::~wxPyInputStream() {
1222     if (m_wxis)
1223         delete m_wxis;
1224 }
1225
1226
1227
1228
1229 PyObject* wxPyInputStream::read(int size) {
1230     PyObject* obj = NULL;
1231     wxMemoryBuffer buf;
1232     const int BUFSIZE = 1024;
1233
1234     // check if we have a real wxInputStream to work with
1235     if (!m_wxis) {
1236         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1237         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1238         wxPyEndBlockThreads(blocked);
1239         return NULL;
1240     }
1241
1242     if (size < 0) {
1243         // read while bytes are available on the stream
1244         while ( m_wxis->CanRead() ) {
1245             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1246             buf.UngetAppendBuf(m_wxis->LastRead());
1247         }
1248
1249     } else {  // Read only size number of characters
1250         m_wxis->Read(buf.GetWriteBuf(size), size);
1251         buf.UngetWriteBuf(m_wxis->LastRead());
1252     }
1253
1254     // error check
1255     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1256     wxStreamError err = m_wxis->GetLastError();
1257     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1258         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1259     }
1260     else {
1261         // We use only strings for the streams, not unicode
1262         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1263     }
1264     wxPyEndBlockThreads(blocked);
1265     return obj;
1266 }
1267
1268
1269 PyObject* wxPyInputStream::readline(int size) {
1270     PyObject* obj = NULL;
1271     wxMemoryBuffer buf;
1272     int i;
1273     char ch;
1274
1275     // check if we have a real wxInputStream to work with
1276     if (!m_wxis) {
1277         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1278         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1279         wxPyEndBlockThreads(blocked);
1280         return NULL;
1281     }
1282
1283     // read until \n or byte limit reached
1284     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1285         ch = m_wxis->GetC();
1286         buf.AppendByte(ch);
1287     }
1288
1289     // errorcheck
1290     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1291     wxStreamError err = m_wxis->GetLastError();
1292     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1293         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1294     }
1295     else {
1296         // We use only strings for the streams, not unicode
1297         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1298     }
1299     wxPyEndBlockThreads(blocked);
1300     return obj;
1301 }
1302
1303
1304 PyObject* wxPyInputStream::readlines(int sizehint) {
1305     PyObject* pylist;
1306
1307     // check if we have a real wxInputStream to work with
1308     if (!m_wxis) {
1309         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1310         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1311         wxPyEndBlockThreads(blocked);
1312         return NULL;
1313     }
1314
1315     // init list
1316     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1317     pylist = PyList_New(0);
1318     wxPyEndBlockThreads(blocked);
1319
1320     if (!pylist) {
1321         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1322         PyErr_NoMemory();
1323         wxPyEndBlockThreads(blocked);
1324         return NULL;
1325     }
1326
1327     // read sizehint bytes or until EOF
1328     int i;
1329     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1330         PyObject* s = this->readline();
1331         if (s == NULL) {
1332             wxPyBlock_t blocked = wxPyBeginBlockThreads();
1333             Py_DECREF(pylist);
1334             wxPyEndBlockThreads(blocked);
1335             return NULL;
1336         }
1337         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1338         PyList_Append(pylist, s);
1339         i += PyString_Size(s);
1340         wxPyEndBlockThreads(blocked);
1341     }
1342
1343     // error check
1344     wxStreamError err = m_wxis->GetLastError();
1345     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1346         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1347         Py_DECREF(pylist);
1348         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1349         wxPyEndBlockThreads(blocked);
1350         return NULL;
1351     }
1352
1353     return pylist;
1354 }
1355
1356
1357 void wxPyInputStream::seek(int offset, int whence) {
1358     if (m_wxis)
1359         m_wxis->SeekI(offset, wxSeekMode(whence));
1360 }
1361
1362 int wxPyInputStream::tell(){
1363     if (m_wxis)
1364         return m_wxis->TellI();
1365     else return 0;
1366 }
1367
1368
1369
1370
1371 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1372     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1373 {}
1374
1375 wxPyCBInputStream::wxPyCBInputStream(const wxPyCBInputStream& other)
1376 {
1377     m_read  = other.m_read;
1378     m_seek  = other.m_seek;
1379     m_tell  = other.m_tell;
1380     m_block = other.m_block;
1381     Py_INCREF(m_read);
1382     Py_INCREF(m_seek);
1383     Py_INCREF(m_tell);
1384 }
1385
1386
1387 wxPyCBInputStream::~wxPyCBInputStream() {
1388     wxPyBlock_t blocked;
1389     if (m_block) blocked = wxPyBeginBlockThreads();
1390     Py_XDECREF(m_read);
1391     Py_XDECREF(m_seek);
1392     Py_XDECREF(m_tell);
1393     if (m_block) wxPyEndBlockThreads(blocked);
1394 }
1395
1396
1397 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1398     wxPyBlock_t blocked;
1399     if (block) blocked = wxPyBeginBlockThreads();
1400
1401     PyObject* read = getMethod(py, "read");
1402     PyObject* seek = getMethod(py, "seek");
1403     PyObject* tell = getMethod(py, "tell");
1404
1405     if (!read) {
1406         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1407         Py_XDECREF(read);
1408         Py_XDECREF(seek);
1409         Py_XDECREF(tell);
1410         if (block) wxPyEndBlockThreads(blocked);
1411         return NULL;
1412     }
1413
1414     if (block) wxPyEndBlockThreads(blocked);
1415     return new wxPyCBInputStream(read, seek, tell, block);
1416 }
1417
1418
1419 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1420     return wxPyCBInputStream::create(py, block);
1421 }
1422
1423 wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other) {
1424     return new wxPyCBInputStream(*other);
1425 }
1426
1427 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1428     if (!PyObject_HasAttrString(py, name))
1429         return NULL;
1430     PyObject* o = PyObject_GetAttrString(py, name);
1431     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1432         Py_DECREF(o);
1433         return NULL;
1434     }
1435     return o;
1436 }
1437
1438
1439 wxFileOffset wxPyCBInputStream::GetLength() const {
1440     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1441     if (m_seek && m_tell) {
1442         wxFileOffset temp = self->OnSysTell();
1443         wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
1444         self->OnSysSeek(temp, wxFromStart);
1445         return ret;
1446     }
1447     else
1448         return wxInvalidOffset;
1449 }
1450
1451
1452 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1453     if (bufsize == 0)
1454         return 0;
1455
1456     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1457     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1458     PyObject* result = PyEval_CallObject(m_read, arglist);
1459     Py_DECREF(arglist);
1460
1461     size_t o = 0;
1462     if ((result != NULL) && PyString_Check(result)) {
1463         o = PyString_Size(result);
1464         if (o == 0)
1465             m_lasterror = wxSTREAM_EOF;
1466         if (o > bufsize)
1467             o = bufsize;
1468         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1469         Py_DECREF(result);
1470
1471     }
1472     else
1473         m_lasterror = wxSTREAM_READ_ERROR;
1474     wxPyEndBlockThreads(blocked);
1475     return o;
1476 }
1477
1478 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1479     m_lasterror = wxSTREAM_WRITE_ERROR;
1480     return 0;
1481 }
1482
1483
1484 wxFileOffset wxPyCBInputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
1485     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1486     PyObject* arglist = PyTuple_New(2);
1487
1488     if (sizeof(wxFileOffset) > sizeof(long))
1489         // wxFileOffset is a 64-bit value...
1490         PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
1491     else
1492         PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
1493
1494     PyTuple_SET_ITEM(arglist, 1, PyInt_FromLong(mode));
1495
1496
1497     PyObject* result = PyEval_CallObject(m_seek, arglist);
1498     Py_DECREF(arglist);
1499     Py_XDECREF(result);
1500     wxPyEndBlockThreads(blocked);
1501     return OnSysTell();
1502 }
1503
1504
1505 wxFileOffset wxPyCBInputStream::OnSysTell() const {
1506     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1507     PyObject* arglist = Py_BuildValue("()");
1508     PyObject* result = PyEval_CallObject(m_tell, arglist);
1509     Py_DECREF(arglist);
1510     wxFileOffset o = 0;
1511     if (result != NULL) {
1512         if (PyLong_Check(result))
1513             o = PyLong_AsLongLong(result);
1514         else
1515             o = PyInt_AsLong(result);
1516         Py_DECREF(result);
1517     };
1518     wxPyEndBlockThreads(blocked);
1519     return o;
1520 }
1521
1522 //----------------------------------------------------------------------
1523
1524 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1525
1526 wxPyCallback::wxPyCallback(PyObject* func) {
1527     m_func = func;
1528     Py_INCREF(m_func);
1529 }
1530
1531 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1532     m_func = other.m_func;
1533     Py_INCREF(m_func);
1534 }
1535
1536 wxPyCallback::~wxPyCallback() {
1537     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1538     Py_DECREF(m_func);
1539     wxPyEndBlockThreads(blocked);
1540 }
1541
1542
1543 #define wxPy_PRECALLINIT     "_preCallInit"
1544 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1545
1546 // This function is used for all events destined for Python event handlers.
1547 void wxPyCallback::EventThunker(wxEvent& event) {
1548     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1549     PyObject*       func = cb->m_func;
1550     PyObject*       result;
1551     PyObject*       arg;
1552     PyObject*       tuple;
1553     bool            checkSkip = false;
1554
1555     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1556     wxString className = event.GetClassInfo()->GetClassName();
1557
1558     // If the event is one of these types then pass the original
1559     // event object instead of the one passed to us.
1560     if ( className == wxT("wxPyEvent") ) {
1561         arg =       ((wxPyEvent*)&event)->GetSelf();
1562         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1563     }
1564     else if ( className == wxT("wxPyCommandEvent") ) {
1565         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1566         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1567     }
1568     else {
1569         arg = wxPyConstructObject((void*)&event, className);
1570     }
1571
1572     if (!arg) {
1573         PyErr_Print();
1574     } else {
1575         // "intern" the pre/post method names to speed up the HasAttr
1576         static PyObject* s_preName  = NULL;
1577         static PyObject* s_postName = NULL;
1578         if (s_preName == NULL) {
1579             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1580             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1581         }
1582
1583         // Check if the event object needs some preinitialization
1584         if (PyObject_HasAttr(arg, s_preName)) {
1585             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1586             if ( result ) {
1587                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1588                 PyErr_Clear();       // Just in case...
1589             } else {
1590                 PyErr_Print();
1591             }
1592         }
1593
1594         // Call the event handler, passing the event object
1595         tuple = PyTuple_New(1);
1596         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1597         result = PyEval_CallObject(func, tuple);
1598         if ( result ) {
1599             Py_DECREF(result);   // result is ignored, but we still need to decref it
1600             PyErr_Clear();       // Just in case...
1601         } else {
1602             PyErr_Print();
1603         }
1604
1605         // Check if the event object needs some post cleanup
1606         if (PyObject_HasAttr(arg, s_postName)) {
1607             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1608             if ( result ) {
1609                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1610                 PyErr_Clear();       // Just in case...
1611             } else {
1612                 PyErr_Print();
1613             }
1614         }
1615
1616         if ( checkSkip ) {
1617             // if the event object was one of our special types and
1618             // it had been cloned, then we need to extract the Skipped
1619             // value from the original and set it in the clone.
1620             result = PyObject_CallMethod(arg, "GetSkipped", "");
1621             if ( result ) {
1622                 event.Skip(PyInt_AsLong(result));
1623                 Py_DECREF(result);
1624             } else {
1625                 PyErr_Print();
1626             }
1627         }
1628         Py_DECREF(tuple);
1629     }
1630     wxPyEndBlockThreads(blocked);
1631 }
1632
1633
1634 //----------------------------------------------------------------------
1635
1636 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1637       m_lastFound = NULL;
1638       m_self = other.m_self;
1639       m_class = other.m_class;
1640       if (m_self) {
1641           Py_INCREF(m_self);
1642           Py_INCREF(m_class);
1643       }
1644 }
1645
1646
1647 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1648     m_self = self;
1649     m_class = klass;
1650     m_incRef = incref;
1651     if (incref) {
1652         Py_INCREF(m_self);
1653         Py_INCREF(m_class);
1654     }
1655 }
1656
1657
1658 #if PYTHON_API_VERSION >= 1011
1659
1660 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1661 // in which the method was defined.  Starting with 2.2 it returns
1662 // "class that asked for the method" which seems totally bogus to me
1663 // but apprently it fixes some obscure problem waiting to happen in
1664 // Python.  Since the API was not documented Guido and the gang felt
1665 // safe in changing it.  Needless to say that totally screwed up the
1666 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1667 // code to find the class where the method is actually defined...
1668
1669 static
1670 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1671 {
1672     int i, n;
1673
1674     if (PyType_Check(klass)) {      // new style classes
1675         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1676         PyTypeObject* type = (PyTypeObject*)klass;
1677         PyObject *mro, *res, *base, *dict;
1678         /* Look in tp_dict of types in MRO */
1679         mro = type->tp_mro;
1680         assert(PyTuple_Check(mro));
1681         n = PyTuple_GET_SIZE(mro);
1682         for (i = 0; i < n; i++) {
1683             base = PyTuple_GET_ITEM(mro, i);
1684             if (PyClass_Check(base))
1685                 dict = ((PyClassObject *)base)->cl_dict;
1686             else {
1687                 assert(PyType_Check(base));
1688                 dict = ((PyTypeObject *)base)->tp_dict;
1689             }
1690             assert(dict && PyDict_Check(dict));
1691             res = PyDict_GetItem(dict, name);
1692             if (res != NULL)
1693                 return base;
1694         }
1695         return NULL;
1696     }
1697
1698     else if (PyClass_Check(klass)) { // old style classes
1699         // This code is borrowed/adapted from class_lookup in classobject.c
1700         PyClassObject* cp = (PyClassObject*)klass;
1701         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1702         if (value != NULL) {
1703             return (PyObject*)cp;
1704         }
1705         n = PyTuple_Size(cp->cl_bases);
1706         for (i = 0; i < n; i++) {
1707             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1708             PyObject *v = PyFindClassWithAttr(base, name);
1709             if (v != NULL)
1710                 return v;
1711         }
1712         return NULL;
1713     }
1714     return NULL;
1715 }
1716 #endif
1717
1718
1719 static
1720 PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name)
1721 {
1722     PyObject* mgc = PyMethod_GET_CLASS(method);
1723
1724 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1725     return mgc;
1726 #else                             // 2.2 and after, the hard way...
1727
1728     PyObject* nameo = PyString_FromString(name);
1729     PyObject* klass = PyFindClassWithAttr(mgc, nameo);
1730     Py_DECREF(nameo);
1731     return klass;
1732 #endif
1733 }
1734
1735
1736
1737 bool wxPyCallbackHelper::findCallback(const char* name) const {
1738     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1739     self->m_lastFound = NULL;
1740
1741     // If the object (m_self) has an attibute of the given name...
1742     if (m_self && PyObject_HasAttrString(m_self, (char*)name)) {
1743         PyObject *method, *klass;
1744         method = PyObject_GetAttrString(m_self, (char*)name);
1745
1746         // ...and if that attribute is a method, and if that method's class is
1747         // not from a base class...
1748         if (PyMethod_Check(method) &&
1749             (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL &&
1750             ((klass == m_class) || PyObject_IsSubclass(klass, m_class))) {
1751
1752             // ...then we'll save a pointer to the method so callCallback can call it.
1753             self->m_lastFound = method;
1754         }
1755         else {
1756             Py_DECREF(method);
1757         }
1758     }
1759     return m_lastFound != NULL;
1760 }
1761
1762
1763 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1764     PyObject*   result;
1765     int         retval = false;
1766
1767     result = callCallbackObj(argTuple);
1768     if (result) {                       // Assumes an integer return type...
1769         retval = PyInt_AsLong(result);
1770         Py_DECREF(result);
1771         PyErr_Clear();                  // forget about it if it's not...
1772     }
1773     return retval;
1774 }
1775
1776 // Invoke the Python callable object, returning the raw PyObject return
1777 // value.  Caller should DECREF the return value and also manage the GIL.
1778 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1779     PyObject* result;
1780
1781     // Save a copy of the pointer in case the callback generates another
1782     // callback.  In that case m_lastFound will have a different value when
1783     // it gets back here...
1784     PyObject* method = m_lastFound;
1785
1786     result = PyEval_CallObject(method, argTuple);
1787     Py_DECREF(argTuple);
1788     Py_DECREF(method);
1789     if (!result) {
1790         PyErr_Print();
1791     }
1792     return result;
1793 }
1794
1795
1796 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1797     cbh.setSelf(self, klass, incref);
1798 }
1799
1800 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name) {
1801     return cbh.findCallback(name);
1802 }
1803
1804 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1805     return cbh.callCallback(argTuple);
1806 }
1807
1808 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1809     return cbh.callCallbackObj(argTuple);
1810 }
1811
1812
1813 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1814     if (cbh->m_incRef) {
1815         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1816         Py_XDECREF(cbh->m_self);
1817         Py_XDECREF(cbh->m_class);
1818         wxPyEndBlockThreads(blocked);
1819     }
1820 }
1821
1822 //---------------------------------------------------------------------------
1823 //---------------------------------------------------------------------------
1824 // These event classes can be derived from in Python and passed through the event
1825 // system without losing anything.  They do this by keeping a reference to
1826 // themselves and some special case handling in wxPyCallback::EventThunker.
1827
1828
1829 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1830     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1831     //Py_INCREF(m_self);        //      circular loops...
1832     m_cloned = false;
1833 }
1834
1835 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1836     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1837     if (m_cloned)
1838         Py_DECREF(m_self);
1839     wxPyEndBlockThreads(blocked);
1840 }
1841
1842 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1843     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1844     if (m_cloned)
1845         Py_DECREF(m_self);
1846     m_self = self;
1847     if (clone) {
1848         Py_INCREF(m_self);
1849         m_cloned = true;
1850     }
1851     wxPyEndBlockThreads(blocked);
1852 }
1853
1854 PyObject* wxPyEvtSelfRef::GetSelf() const {
1855     Py_INCREF(m_self);
1856     return m_self;
1857 }
1858
1859
1860 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1861 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1862
1863
1864 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1865     : wxEvent(winid, commandType) {
1866 }
1867
1868
1869 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1870     : wxEvent(evt)
1871 {
1872     SetSelf(evt.m_self, true);
1873 }
1874
1875
1876 wxPyEvent::~wxPyEvent() {
1877 }
1878
1879
1880 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1881     : wxCommandEvent(commandType, id) {
1882 }
1883
1884
1885 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1886     : wxCommandEvent(evt)
1887 {
1888     SetSelf(evt.m_self, true);
1889 }
1890
1891
1892 wxPyCommandEvent::~wxPyCommandEvent() {
1893 }
1894
1895
1896
1897
1898
1899 //---------------------------------------------------------------------------
1900 //---------------------------------------------------------------------------
1901 // Convert a wxList to a Python List, only works for lists of wxObjects
1902
1903 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1904     wxList*     list = (wxList*)listbase;  // this is probably bad...
1905     PyObject*   pyList;
1906     PyObject*   pyObj;
1907     wxObject*   wxObj;
1908     wxNode*     node = list->GetFirst();
1909
1910     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1911     pyList = PyList_New(0);
1912     while (node) {
1913         wxObj = node->GetData();
1914         pyObj = wxPyMake_wxObject(wxObj,false);
1915         PyList_Append(pyList, pyObj);
1916         node = node->GetNext();
1917     }
1918     wxPyEndBlockThreads(blocked);
1919     return pyList;
1920 }
1921
1922 //----------------------------------------------------------------------
1923
1924 long wxPyGetWinHandle(wxWindow* win) {
1925
1926 #ifdef __WXMSW__
1927     return (long)win->GetHandle();
1928 #endif
1929
1930 #if defined(__WXGTK__) || defined(__WXX11)
1931     return (long)GetXWindow(win);
1932 #endif
1933
1934 #ifdef __WXMAC__
1935     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
1936     return (long)win->GetHandle();
1937 #endif
1938
1939     return 0;
1940 }
1941
1942 //----------------------------------------------------------------------
1943 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1944 // included in every file over and over again...
1945
1946 wxString* wxString_in_helper(PyObject* source) {
1947     wxString* target = NULL;
1948
1949     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1950         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
1951         return NULL;
1952     }
1953 #if wxUSE_UNICODE
1954     PyObject* uni = source;
1955     if (PyString_Check(source)) {
1956         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1957         if (PyErr_Occurred()) return NULL;
1958     }
1959     target = new wxString();
1960     size_t len = PyUnicode_GET_SIZE(uni);
1961     if (len) {
1962         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target->GetWriteBuf(len), len);
1963         target->UngetWriteBuf(len);
1964     }
1965
1966     if (PyString_Check(source))
1967         Py_DECREF(uni);
1968 #else
1969     // Convert to a string object if it isn't already, then to wxString
1970     PyObject* str = source;
1971     if (PyUnicode_Check(source)) {
1972         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1973         if (PyErr_Occurred()) return NULL;
1974     }
1975     else if (!PyString_Check(source)) {
1976         str = PyObject_Str(source);
1977         if (PyErr_Occurred()) return NULL;
1978     }
1979     char* tmpPtr; int tmpSize;
1980     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1981     target = new wxString(tmpPtr, tmpSize);
1982
1983     if (!PyString_Check(source))
1984         Py_DECREF(str);
1985 #endif // wxUSE_UNICODE
1986
1987     return target;
1988 }
1989
1990
1991 // Similar to above except doesn't use "new" and doesn't set an exception
1992 wxString Py2wxString(PyObject* source)
1993 {
1994     wxString target;
1995
1996 #if wxUSE_UNICODE
1997     // Convert to a unicode object, if not already, then to a wxString
1998     PyObject* uni = source;
1999     if (!PyUnicode_Check(source)) {
2000         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
2001         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
2002     }
2003     size_t len = PyUnicode_GET_SIZE(uni);
2004     if (len) {
2005         PyUnicode_AsWideChar((PyUnicodeObject*)uni, target.GetWriteBuf(len), len);
2006         target.UngetWriteBuf();
2007     }
2008
2009     if (!PyUnicode_Check(source))
2010         Py_DECREF(uni);
2011 #else
2012     // Convert to a string object if it isn't already, then to wxString
2013     PyObject* str = source;
2014     if (PyUnicode_Check(source)) {
2015         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
2016         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
2017     }
2018     else if (!PyString_Check(source)) {
2019         str = PyObject_Str(source);
2020         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
2021     }
2022     char* tmpPtr; int tmpSize;
2023     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
2024     target = wxString(tmpPtr, tmpSize);
2025
2026     if (!PyString_Check(source))
2027         Py_DECREF(str);
2028 #endif // wxUSE_UNICODE
2029
2030     return target;
2031 }
2032
2033
2034 // Make either a Python String or Unicode object, depending on build mode
2035 PyObject* wx2PyString(const wxString& src)
2036 {
2037     PyObject* str;
2038 #if wxUSE_UNICODE
2039     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
2040 #else
2041     str = PyString_FromStringAndSize(src.c_str(), src.Len());
2042 #endif
2043     return str;
2044 }
2045
2046
2047
2048 void wxSetDefaultPyEncoding(const char* encoding)
2049 {
2050     strncpy(wxPyDefaultEncoding, encoding, DEFAULTENCODING_SIZE);
2051 }
2052
2053 const char* wxGetDefaultPyEncoding()
2054 {
2055     return wxPyDefaultEncoding;
2056 }
2057
2058 //----------------------------------------------------------------------
2059
2060
2061 byte* byte_LIST_helper(PyObject* source) {
2062     if (!PyList_Check(source)) {
2063         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2064         return NULL;
2065     }
2066     int count = PyList_Size(source);
2067     byte* temp = new byte[count];
2068     if (! temp) {
2069         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2070         return NULL;
2071     }
2072     for (int x=0; x<count; x++) {
2073         PyObject* o = PyList_GetItem(source, x);
2074         if (! PyInt_Check(o)) {
2075             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2076             return NULL;
2077         }
2078         temp[x] = (byte)PyInt_AsLong(o);
2079     }
2080     return temp;
2081 }
2082
2083
2084 int* int_LIST_helper(PyObject* source) {
2085     if (!PyList_Check(source)) {
2086         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2087         return NULL;
2088     }
2089     int count = PyList_Size(source);
2090     int* temp = new int[count];
2091     if (! temp) {
2092         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2093         return NULL;
2094     }
2095     for (int x=0; x<count; x++) {
2096         PyObject* o = PyList_GetItem(source, x);
2097         if (! PyInt_Check(o)) {
2098             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2099             return NULL;
2100         }
2101         temp[x] = PyInt_AsLong(o);
2102     }
2103     return temp;
2104 }
2105
2106
2107 long* long_LIST_helper(PyObject* source) {
2108     if (!PyList_Check(source)) {
2109         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2110         return NULL;
2111     }
2112     int count = PyList_Size(source);
2113     long* temp = new long[count];
2114     if (! temp) {
2115         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2116         return NULL;
2117     }
2118     for (int x=0; x<count; x++) {
2119         PyObject* o = PyList_GetItem(source, x);
2120         if (! PyInt_Check(o)) {
2121             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2122             return NULL;
2123         }
2124         temp[x] = PyInt_AsLong(o);
2125     }
2126     return temp;
2127 }
2128
2129
2130 char** string_LIST_helper(PyObject* source) {
2131     if (!PyList_Check(source)) {
2132         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2133         return NULL;
2134     }
2135     int count = PyList_Size(source);
2136     char** temp = new char*[count];
2137     if (! temp) {
2138         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2139         return NULL;
2140     }
2141     for (int x=0; x<count; x++) {
2142         PyObject* o = PyList_GetItem(source, x);
2143         if (! PyString_Check(o)) {
2144             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2145             return NULL;
2146         }
2147         temp[x] = PyString_AsString(o);
2148     }
2149     return temp;
2150 }
2151
2152 //--------------------------------
2153 // Part of patch from Tim Hochberg
2154 static inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point) {
2155     if (PyInt_Check(o1) && PyInt_Check(o2)) {
2156         point->x = PyInt_AS_LONG(o1);
2157         point->y = PyInt_AS_LONG(o2);
2158         return true;
2159     }
2160     if (PyFloat_Check(o1) && PyFloat_Check(o2)) {
2161         point->x = (int)PyFloat_AS_DOUBLE(o1);
2162         point->y = (int)PyFloat_AS_DOUBLE(o2);
2163         return true;
2164     }
2165     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {  // TODO: Why???
2166         // Disallow instances because they can cause havok
2167         return false;
2168     }
2169     if (PyNumber_Check(o1) && PyNumber_Check(o2)) {
2170         // I believe this excludes instances, so this should be safe without INCREFFing o1 and o2
2171         point->x = PyInt_AsLong(o1);
2172         point->y = PyInt_AsLong(o2);
2173         return true;
2174     }
2175     return false;
2176 }
2177
2178
2179 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count) {
2180     // Putting all of the declarations here allows
2181     // us to put the error handling all in one place.
2182     int x;
2183     wxPoint* temp;
2184     PyObject *o, *o1, *o2;
2185     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2186
2187     if (!PySequence_Check(source)) {
2188         goto error0;
2189     }
2190
2191     // The length of the sequence is returned in count.
2192     *count = PySequence_Length(source);
2193     if (*count < 0) {
2194         goto error0;
2195     }
2196
2197     temp = new wxPoint[*count];
2198     if (!temp) {
2199         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2200         return NULL;
2201     }
2202     for (x=0; x<*count; x++) {
2203         // Get an item: try fast way first.
2204         if (isFast) {
2205             o = PySequence_Fast_GET_ITEM(source, x);
2206         }
2207         else {
2208             o = PySequence_GetItem(source, x);
2209             if (o == NULL) {
2210                 goto error1;
2211             }
2212         }
2213
2214         // Convert o to wxPoint.
2215         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2216             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2217             o1 = PySequence_Fast_GET_ITEM(o, 0);
2218             o2 = PySequence_Fast_GET_ITEM(o, 1);
2219             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2220                 goto error2;
2221             }
2222         }
2223         else if (wxPySwigInstance_Check(o)) {
2224             wxPoint* pt;
2225             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2226                 goto error2;
2227             }
2228             temp[x] = *pt;
2229         }
2230         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2231             o1 = PySequence_GetItem(o, 0);
2232             o2 = PySequence_GetItem(o, 1);
2233             if (!wxPointFromObjects(o1, o2, &temp[x])) {
2234                 goto error3;
2235             }
2236             Py_DECREF(o1);
2237             Py_DECREF(o2);
2238         }
2239         else {
2240             goto error2;
2241         }
2242         // Clean up.
2243         if (!isFast)
2244             Py_DECREF(o);
2245     }
2246     return temp;
2247
2248 error3:
2249     Py_DECREF(o1);
2250     Py_DECREF(o2);
2251 error2:
2252     if (!isFast)
2253         Py_DECREF(o);
2254 error1:
2255     delete [] temp;
2256 error0:
2257     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2258     return NULL;
2259 }
2260 // end of patch
2261 //------------------------------
2262
2263
2264 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2265     if (!PyList_Check(source)) {
2266         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2267         return NULL;
2268     }
2269     int count = PyList_Size(source);
2270     wxBitmap** temp = new wxBitmap*[count];
2271     if (! temp) {
2272         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2273         return NULL;
2274     }
2275     for (int x=0; x<count; x++) {
2276         PyObject* o = PyList_GetItem(source, x);
2277         if (wxPySwigInstance_Check(o)) {
2278             wxBitmap*    pt;
2279             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2280                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2281                 return NULL;
2282             }
2283             temp[x] = pt;
2284         }
2285         else {
2286             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2287             return NULL;
2288         }
2289     }
2290     return temp;
2291 }
2292
2293
2294
2295 wxString* wxString_LIST_helper(PyObject* source) {
2296     if (!PyList_Check(source)) {
2297         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2298         return NULL;
2299     }
2300     int count = PyList_Size(source);
2301     wxString* temp = new wxString[count];
2302     if (! temp) {
2303         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2304         return NULL;
2305     }
2306     for (int x=0; x<count; x++) {
2307         PyObject* o = PyList_GetItem(source, x);
2308 #if PYTHON_API_VERSION >= 1009
2309         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2310             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2311             return NULL;
2312         }
2313 #else
2314         if (! PyString_Check(o)) {
2315             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2316             return NULL;
2317         }
2318 #endif
2319
2320         wxString* pStr = wxString_in_helper(o);
2321         temp[x] = *pStr;
2322         delete pStr;
2323     }
2324     return temp;
2325 }
2326
2327
2328 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2329     if (!PyList_Check(source)) {
2330         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2331         return NULL;
2332     }
2333     int count                = PyList_Size(source);
2334     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2335     if (! temp) {
2336         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2337         return NULL;
2338     }
2339     for (int x=0; x<count; x++) {
2340         PyObject* o = PyList_GetItem(source, x);
2341         if (wxPySwigInstance_Check(o)) {
2342             wxAcceleratorEntry* ae;
2343             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2344                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2345                 return NULL;
2346             }
2347             temp[x] = *ae;
2348         }
2349         else if (PyTuple_Check(o)) {
2350             PyObject* o1 = PyTuple_GetItem(o, 0);
2351             PyObject* o2 = PyTuple_GetItem(o, 1);
2352             PyObject* o3 = PyTuple_GetItem(o, 2);
2353             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2354         }
2355         else {
2356             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2357             return NULL;
2358         }
2359     }
2360     return temp;
2361 }
2362
2363
2364 wxPen** wxPen_LIST_helper(PyObject* source) {
2365     if (!PyList_Check(source)) {
2366         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2367         return NULL;
2368     }
2369     int count = PyList_Size(source);
2370     wxPen** temp = new wxPen*[count];
2371     if (!temp) {
2372         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2373         return NULL;
2374     }
2375     for (int x=0; x<count; x++) {
2376         PyObject* o = PyList_GetItem(source, x);
2377         if (wxPySwigInstance_Check(o)) {
2378             wxPen*  pt;
2379             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2380                 delete temp;
2381                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2382                 return NULL;
2383             }
2384             temp[x] = pt;
2385         }
2386         else {
2387             delete temp;
2388             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2389             return NULL;
2390         }
2391     }
2392     return temp;
2393 }
2394
2395
2396 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2397     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2398     PyObject *o1, *o2;
2399
2400     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2401         return false;
2402
2403     if (isFast) {
2404         o1 = PySequence_Fast_GET_ITEM(source, 0);
2405         o2 = PySequence_Fast_GET_ITEM(source, 1);
2406     }
2407     else {
2408         o1 = PySequence_GetItem(source, 0);
2409         o2 = PySequence_GetItem(source, 1);
2410     }
2411
2412     *i1 = PyInt_AsLong(o1);
2413     *i2 = PyInt_AsLong(o2);
2414
2415     if (! isFast) {
2416         Py_DECREF(o1);
2417         Py_DECREF(o2);
2418     }
2419     return true;
2420 }
2421
2422
2423 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2424     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2425     PyObject *o1, *o2, *o3, *o4;
2426
2427     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2428         return false;
2429
2430     if (isFast) {
2431         o1 = PySequence_Fast_GET_ITEM(source, 0);
2432         o2 = PySequence_Fast_GET_ITEM(source, 1);
2433         o3 = PySequence_Fast_GET_ITEM(source, 2);
2434         o4 = PySequence_Fast_GET_ITEM(source, 3);
2435     }
2436     else {
2437         o1 = PySequence_GetItem(source, 0);
2438         o2 = PySequence_GetItem(source, 1);
2439         o3 = PySequence_GetItem(source, 2);
2440         o4 = PySequence_GetItem(source, 3);
2441     }
2442
2443     *i1 = PyInt_AsLong(o1);
2444     *i2 = PyInt_AsLong(o2);
2445     *i3 = PyInt_AsLong(o3);
2446     *i4 = PyInt_AsLong(o4);
2447
2448     if (! isFast) {
2449         Py_DECREF(o1);
2450         Py_DECREF(o2);
2451         Py_DECREF(o3);
2452         Py_DECREF(o4);
2453     }
2454     return true;
2455 }
2456
2457
2458 //----------------------------------------------------------------------
2459
2460 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2461 {
2462     void* ptr;
2463
2464     if (wxPySwigInstance_Check(source) &&
2465         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2466         return true;
2467
2468     PyErr_Clear();
2469     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2470         return true;
2471
2472     return false;
2473 }
2474
2475 bool wxSize_helper(PyObject* source, wxSize** obj)
2476 {
2477     if (source == Py_None) {
2478         **obj = wxSize(-1,-1);
2479         return true;
2480     }
2481     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2482 }
2483
2484
2485 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2486 {
2487     if (source == Py_None) {
2488         **obj = wxPoint(-1,-1);
2489         return true;
2490     }
2491     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2492 }
2493
2494
2495
2496 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2497
2498     if (source == Py_None) {
2499         **obj = wxRealPoint(-1,-1);
2500         return true;
2501     }
2502
2503     // If source is an object instance then it may already be the right type
2504     if (wxPySwigInstance_Check(source)) {
2505         wxRealPoint* ptr;
2506         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2507             goto error;
2508         *obj = ptr;
2509         return true;
2510     }
2511     // otherwise a 2-tuple of floats is expected
2512     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2513         PyObject* o1 = PySequence_GetItem(source, 0);
2514         PyObject* o2 = PySequence_GetItem(source, 1);
2515         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2516             Py_DECREF(o1);
2517             Py_DECREF(o2);
2518             goto error;
2519         }
2520         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2521         Py_DECREF(o1);
2522         Py_DECREF(o2);
2523         return true;
2524     }
2525
2526  error:
2527     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2528     return false;
2529 }
2530
2531
2532
2533 bool wxRect_helper(PyObject* source, wxRect** obj) {
2534
2535     if (source == Py_None) {
2536         **obj = wxRect(-1,-1,-1,-1);
2537         return true;
2538     }
2539
2540     // If source is an object instance then it may already be the right type
2541     if (wxPySwigInstance_Check(source)) {
2542         wxRect* ptr;
2543         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2544             goto error;
2545         *obj = ptr;
2546         return true;
2547     }
2548     // otherwise a 4-tuple of integers is expected
2549     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2550         PyObject* o1 = PySequence_GetItem(source, 0);
2551         PyObject* o2 = PySequence_GetItem(source, 1);
2552         PyObject* o3 = PySequence_GetItem(source, 2);
2553         PyObject* o4 = PySequence_GetItem(source, 3);
2554         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2555             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2556             Py_DECREF(o1);
2557             Py_DECREF(o2);
2558             Py_DECREF(o3);
2559             Py_DECREF(o4);
2560             goto error;
2561         }
2562         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2563                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2564         Py_DECREF(o1);
2565         Py_DECREF(o2);
2566         Py_DECREF(o3);
2567         Py_DECREF(o4);
2568         return true;
2569     }
2570
2571  error:
2572     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2573     return false;
2574 }
2575
2576
2577
2578 bool wxColour_helper(PyObject* source, wxColour** obj) {
2579
2580     if (source == Py_None) {
2581         **obj = wxNullColour;
2582         return true;
2583     }
2584
2585     // If source is an object instance then it may already be the right type
2586     if (wxPySwigInstance_Check(source)) {
2587         wxColour* ptr;
2588         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2589             goto error;
2590         *obj = ptr;
2591         return true;
2592     }
2593     // otherwise check for a string
2594     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2595         wxString spec = Py2wxString(source);
2596         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2597             long red, green, blue;
2598             red = green = blue = 0;
2599             spec.Mid(1,2).ToLong(&red,   16);
2600             spec.Mid(3,2).ToLong(&green, 16);
2601             spec.Mid(5,2).ToLong(&blue,  16);
2602
2603             **obj = wxColour(red, green, blue);
2604             return true;
2605         }
2606         else {                                       // it's a colour name
2607             **obj = wxColour(spec);
2608             return true;
2609         }
2610     }
2611     // last chance: 3-tuple of integers is expected
2612     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2613         PyObject* o1 = PySequence_GetItem(source, 0);
2614         PyObject* o2 = PySequence_GetItem(source, 1);
2615         PyObject* o3 = PySequence_GetItem(source, 2);
2616         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2617             Py_DECREF(o1);
2618             Py_DECREF(o2);
2619             Py_DECREF(o3);
2620             goto error;
2621         }
2622         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2623         Py_DECREF(o1);
2624         Py_DECREF(o2);
2625         Py_DECREF(o3);
2626         return true;
2627     }
2628
2629  error:
2630     PyErr_SetString(PyExc_TypeError,
2631                     "Expected a wxColour object or a string containing a colour name or '#RRGGBB'.");
2632     return false;
2633 }
2634
2635
2636 bool wxColour_typecheck(PyObject* source) {
2637
2638     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2639         return true;
2640
2641     if (PyString_Check(source) || PyUnicode_Check(source))
2642         return true;
2643
2644     return false;
2645 }
2646
2647
2648
2649 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2650
2651     if (source == Py_None) {
2652         **obj = wxPoint2D(-1,-1);
2653         return true;
2654     }
2655
2656     // If source is an object instance then it may already be the right type
2657     if (wxPySwigInstance_Check(source)) {
2658         wxPoint2D* ptr;
2659         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2660             goto error;
2661         *obj = ptr;
2662         return true;
2663     }
2664     // otherwise a length-2 sequence of floats is expected
2665     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2666         PyObject* o1 = PySequence_GetItem(source, 0);
2667         PyObject* o2 = PySequence_GetItem(source, 1);
2668         // This should really check for floats, not numbers -- but that would break code.
2669         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2670             Py_DECREF(o1);
2671             Py_DECREF(o2);
2672             goto error;
2673         }
2674         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2675         Py_DECREF(o1);
2676         Py_DECREF(o2);
2677         return true;
2678     }
2679  error:
2680     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxPoint2D object.");
2681     return false;
2682 }
2683
2684
2685 //----------------------------------------------------------------------
2686
2687 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr) {
2688
2689     PyObject* list = PyList_New(0);
2690     for (size_t i=0; i < arr.GetCount(); i++) {
2691 #if wxUSE_UNICODE
2692         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2693 #else
2694         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2695 #endif
2696         PyList_Append(list, str);
2697         Py_DECREF(str);
2698     }
2699     return list;
2700 }
2701
2702
2703 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr) {
2704
2705     PyObject* list = PyList_New(0);
2706     for (size_t i=0; i < arr.GetCount(); i++) {
2707         PyObject* number = PyInt_FromLong(arr[i]);
2708         PyList_Append(list, number);
2709         Py_DECREF(number);
2710     }
2711     return list;
2712 }
2713
2714
2715 //----------------------------------------------------------------------
2716 // wxPyImageHandler methods
2717 //
2718 // TODO: Switch these to use wxPython's standard macros and helper classes
2719 //       for calling callbacks.
2720
2721 PyObject* wxPyImageHandler::m_DoCanRead_Name = NULL;
2722 PyObject* wxPyImageHandler::m_GetImageCount_Name = NULL;
2723 PyObject* wxPyImageHandler::m_LoadFile_Name = NULL;
2724 PyObject* wxPyImageHandler::m_SaveFile_Name = NULL;
2725
2726 PyObject* wxPyImageHandler::py_InputStream(wxInputStream* stream) {
2727     return wxPyConstructObject(new wxPyInputStream(stream),
2728                                wxT("wxPyInputStream"), 0);
2729 }
2730
2731 PyObject* wxPyImageHandler::py_Image(wxImage* image) {
2732     return wxPyConstructObject(image, wxT("wxImage"), 0);
2733 }
2734
2735 PyObject* wxPyImageHandler::py_OutputStream(wxOutputStream* stream) {
2736     return wxPyConstructObject(stream, wxT("wxOutputStream"), 0);
2737 }
2738
2739 wxPyImageHandler::wxPyImageHandler():
2740     m_self(NULL)
2741 {
2742     if (!m_DoCanRead_Name) {
2743         m_DoCanRead_Name = PyString_FromString("DoCanRead");
2744         m_GetImageCount_Name = PyString_FromString("GetImageCount");
2745         m_LoadFile_Name = PyString_FromString("LoadFile");
2746         m_SaveFile_Name = PyString_FromString("SaveFile");
2747     }
2748 }
2749
2750 wxPyImageHandler::~wxPyImageHandler() {
2751     if (m_self) {
2752         Py_DECREF(m_self);
2753         m_self = NULL;
2754     }
2755 }
2756
2757 void wxPyImageHandler::_SetSelf(PyObject *self) {
2758     // should check here for isinstance(PyImageHandler) ??
2759     m_self = self;
2760     Py_INCREF(m_self);
2761 }
2762
2763 bool wxPyImageHandler::DoCanRead(wxInputStream& stream) {
2764     // check if our object has this method
2765     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2766     if (!m_self || !PyObject_HasAttr(m_self, m_DoCanRead_Name)) {
2767         wxPyEndBlockThreads(blocked);
2768         return false;
2769     }
2770
2771     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_DoCanRead_Name,
2772                                                py_InputStream(&stream), NULL);
2773     bool retval = false;
2774     if (res) {
2775         retval = PyInt_AsLong(res);
2776         Py_DECREF(res);
2777         PyErr_Clear();
2778     }
2779     else
2780         PyErr_Print();
2781     wxPyEndBlockThreads(blocked);
2782     return retval;
2783 }
2784
2785 bool wxPyImageHandler::LoadFile( wxImage* image, wxInputStream& stream,
2786                                  bool verbose, int index ) {
2787     // check if our object has this method
2788     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2789     if (!m_self || !PyObject_HasAttr(m_self, m_LoadFile_Name)) {
2790         wxPyEndBlockThreads(blocked);
2791         return false;
2792     }
2793     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_LoadFile_Name,
2794                                                py_Image(image),
2795                                                py_InputStream(&stream),
2796                                                PyInt_FromLong(verbose),
2797                                                PyInt_FromLong(index),
2798                                                NULL);
2799     bool retval = false;
2800     if (res) {
2801         retval = PyInt_AsLong(res);
2802         Py_DECREF(res);
2803         PyErr_Clear();
2804     } else
2805         PyErr_Print();
2806     wxPyEndBlockThreads(blocked);
2807     return retval;
2808 }
2809
2810 bool wxPyImageHandler::SaveFile( wxImage* image, wxOutputStream& stream,
2811                                  bool verbose ) {
2812     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2813     if (!m_self || !PyObject_HasAttr(m_self, m_SaveFile_Name)) {
2814         wxPyEndBlockThreads(blocked);
2815         return false;
2816     }
2817     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_SaveFile_Name,
2818                                                py_Image(image),
2819                                                py_OutputStream(&stream),
2820                                                PyInt_FromLong(verbose),
2821                                                NULL);
2822     bool retval = false;
2823     if(res) {
2824         retval=PyInt_AsLong(res);
2825         Py_DECREF(res);
2826         PyErr_Clear();
2827     } else
2828         PyErr_Print();
2829     wxPyEndBlockThreads(blocked);
2830     return retval;
2831 }
2832
2833 int wxPyImageHandler::GetImageCount( wxInputStream& stream ) {
2834     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2835     if (!m_self || !PyObject_HasAttr(m_self, m_GetImageCount_Name)) {
2836         wxPyEndBlockThreads(blocked);
2837         return 1;
2838     }
2839     PyObject *res=PyObject_CallMethodObjArgs(m_self, m_GetImageCount_Name,
2840                                              py_InputStream(&stream),
2841                                              NULL);
2842     int retval = 1;
2843     if(res) {
2844         retval=PyInt_AsLong(res);
2845         Py_DECREF(res);
2846         PyErr_Clear();
2847     } else
2848         PyErr_Print();
2849     wxPyEndBlockThreads(blocked);
2850     return retval;
2851 }
2852
2853
2854 //----------------------------------------------------------------------
2855 //----------------------------------------------------------------------
2856
2857
2858
2859