wxPython/src/helpers.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpers.cpp
   3 // Purpose:     Helper functions/classes for the wxPython extension module
   4 //
   5 // Author:      Robin Dunn
   6 //
   7 // Created:     1-July-1997
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13
  14 #undef DEBUG
  15 #include <Python.h>
  16 #include "wx/wxPython/wxPython_int.h"
  17 #include "wx/wxPython/pyistream.h"
  18 #include "wx/wxPython/swigver.h"
  19 #include "wx/wxPython/twoitem.h"
  20
  21 #ifdef __WXMSW__
  22 #include <wx/msw/private.h>
  23 #include <wx/msw/winundef.h>
  24 #include <wx/msw/msvcrt.h>
  25 #endif
  26
  27 #ifdef __WXGTK__
  28 #include <gdk/gdk.h>
  29 #include <gdk/gdkx.h>
  30 #include <gtk/gtk.h>
  31 #include <gdk/gdkprivate.h>
  32 #ifdef __WXGTK20__
  33 #include <wx/gtk/win_gtk.h>
  34 #else
  35 #include <wx/gtk1/win_gtk.h>
  36 #endif
  37 #define GetXWindow(wxwin) (wxwin)->m_wxwindow ? \
  38                           GDK_WINDOW_XWINDOW(GTK_PIZZA((wxwin)->m_wxwindow)->bin_window) : \
  39                           GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
  40 #include <locale.h>
  41 #endif
  42
  43 #ifdef __WXX11__
  44 #include "wx/x11/privx.h"
  45 #define GetXWindow(wxwin)   ((Window)(wxwin)->GetHandle())
  46 #endif
  47
  48 #ifdef __WXMAC__
  49 #include <wx/mac/private.h>
  50 #endif
  51
  52 #include <wx/clipbrd.h>
  53 #include <wx/mimetype.h>
  54 #include <wx/image.h>
  55
  56 //----------------------------------------------------------------------
  57
  58 #if PYTHON_API_VERSION < 1009 && wxUSE_UNICODE
  59 #error Python must support Unicode to use wxWindows Unicode
  60 #endif
  61
  62 //----------------------------------------------------------------------
  63
  64 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  65 bool wxPyDoCleanup = false;
  66 bool wxPyDoingCleanup = false;
  67
  68
  69 #ifdef WXP_WITH_THREAD
  70 #if !wxPyUSE_GIL_STATE
  71 struct wxPyThreadState {
  72     unsigned long  tid;
  73     PyThreadState* tstate;
  74
  75     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  76         : tid(_tid), tstate(_tstate) {}
  77 };
  78
  79 #include <wx/dynarray.h>
  80 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  81 #include <wx/arrimpl.cpp>
  82 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  83
  84 wxPyThreadStateArray* wxPyTStates = NULL;
  85 wxMutex*              wxPyTMutex = NULL;
  86
  87 #endif
  88 #endif
  89
  90
  91 #define DEFAULTENCODING_SIZE 64
  92 static char wxPyDefaultEncoding[DEFAULTENCODING_SIZE] = "ascii";
  93
  94 static PyObject* wxPython_dict = NULL;
  95 static PyObject* wxPyAssertionError = NULL;
  96 static PyObject* wxPyNoAppError = NULL;
  97
  98 PyObject* wxPyPtrTypeMap = NULL;
  99
 100
 101 #ifdef __WXMSW__             // If building for win32...
 102 //----------------------------------------------------------------------
 103 // This gets run when the DLL is loaded.  We just need to save a handle.
 104 //----------------------------------------------------------------------
 105
 106 extern "C"
 107 BOOL WINAPI DllMain(
 108     HINSTANCE   hinstDLL,    // handle to DLL module
 109     DWORD       fdwReason,   // reason for calling function
 110     LPVOID      lpvReserved  // reserved
 111    )
 112 {
 113     // If wxPython is embedded in another wxWidgets app then
 114     // the instance has already been set.
 115     if (! wxGetInstance())
 116         wxSetInstance(hinstDLL);
 117     return true;
 118 }
 119 #endif
 120
 121 //----------------------------------------------------------------------
 122 // Classes for implementing the wxp main application shell.
 123 //----------------------------------------------------------------------
 124
 125 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 126
 127
 128 wxPyApp::wxPyApp() {
 129     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 130     m_startupComplete = false;
 131 }
 132
 133
 134 wxPyApp::~wxPyApp() {
 135     wxPythonApp = NULL;
 136     wxApp::SetInstance(NULL);
 137 }
 138
 139
 140 // This one isn't acutally called...  We fake it with _BootstrapApp
 141 bool wxPyApp::OnInit() {
 142     return false;
 143 }
 144
 145
 146 int  wxPyApp::MainLoop() {
 147     int retval = 0;
 148
 149     DeletePendingObjects();
 150     bool initialized = wxTopLevelWindows.GetCount() != 0;
 151     if (initialized) {
 152         if ( m_exitOnFrameDelete == Later ) {
 153             m_exitOnFrameDelete = Yes;
 154         }
 155
 156         retval = wxApp::MainLoop();
 157         OnExit();
 158     }
 159     return retval;
 160 }
 161
 162
 163 bool wxPyApp::OnInitGui() {
 164     bool rval=true;
 165     wxApp::OnInitGui();  // in this case always call the base class version
 166     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 167     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 168         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 169     wxPyEndBlockThreads(blocked);
 170     return rval;
 171 }
 172
 173
 174 int wxPyApp::OnExit() {
 175     int rval=0;
 176     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 177     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 178         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 179     wxPyEndBlockThreads(blocked);
 180     wxApp::OnExit();  // in this case always call the base class version
 181     return rval;
 182 }
 183
 184
 185
 186 void wxPyApp::ExitMainLoop() {
 187     bool found;
 188     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 189     if ((found = wxPyCBH_findCallback(m_myInst, "ExitMainLoop")))
 190         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 191     wxPyEndBlockThreads(blocked);
 192     if (! found)
 193         wxApp::ExitMainLoop();
 194 }
 195
 196
 197 #ifdef __WXDEBUG__
 198 void wxPyApp::OnAssertFailure(const wxChar *file,
 199                               int line,
 200                               const wxChar *func,
 201                               const wxChar *cond,
 202                               const wxChar *msg)
 203 {
 204     // if we're not fully initialized then just log the error
 205     if (! m_startupComplete) {
 206         wxString buf;
 207         buf.Alloc(4096);
 208         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 209                    file, line, cond);
 210         if ( func && *func )
 211             buf << wxT(" in ") << func << wxT("()");
 212         if (msg != NULL)
 213             buf << wxT(": ") << msg;
 214
 215         wxLogDebug(buf);
 216         return;
 217     }
 218
 219     // If the OnAssert is overloaded in the Python class then call it...
 220     bool found;
 221     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 222     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 223         PyObject* fso = wx2PyString(file);
 224         PyObject* cso = wx2PyString(file);
 225         PyObject* mso;
 226         if (msg != NULL)
 227             mso = wx2PyString(file);
 228         else {
 229             mso = Py_None; Py_INCREF(Py_None);
 230         }
 231         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 232         Py_DECREF(fso);
 233         Py_DECREF(cso);
 234         Py_DECREF(mso);
 235     }
 236     wxPyEndBlockThreads(blocked);
 237
 238     // ...otherwise do our own thing with it
 239     if (! found) {
 240         // ignore it?
 241         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 242             return;
 243
 244         // turn it into a Python exception?
 245         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 246             wxString buf;
 247             buf.Alloc(4096);
 248             buf.Printf(wxT("C++ assertion \"%s\" failed at %s(%d)"), cond, file, line);
 249             if ( func && *func )
 250                 buf << wxT(" in ") << func << wxT("()");
 251             if (msg != NULL)
 252                 buf << wxT(": ") << msg;
 253
 254
 255             // set the exception
 256             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 257             PyObject* s = wx2PyString(buf);
 258             PyErr_SetObject(wxPyAssertionError, s);
 259             Py_DECREF(s);
 260             wxPyEndBlockThreads(blocked);
 261
 262             // Now when control returns to whatever API wrapper was called from
 263             // Python it should detect that an exception is set and will return
 264             // NULL, signalling the exception to Python.
 265         }
 266
 267         // Send it to the normal log destination, but only if
 268         // not _DIALOG because it will call this too
 269         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 270             wxString buf;
 271             buf.Alloc(4096);
 272             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 273                        file, line, cond);
 274             if ( func && *func )
 275                 buf << wxT(" in ") << func << wxT("()");
 276             if (msg != NULL)
 277                 buf << wxT(": ") << msg;
 278             wxLogDebug(buf);
 279         }
 280
 281         // do the normal wx assert dialog?
 282         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 283             wxApp::OnAssertFailure(file, line, func, cond, msg);
 284     }
 285 }
 286 #endif
 287
 288     // For catching Apple Events
 289 void wxPyApp::MacOpenFile(const wxString &fileName)
 290 {
 291     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 292     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 293         PyObject* s = wx2PyString(fileName);
 294         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 295         Py_DECREF(s);
 296     }
 297     wxPyEndBlockThreads(blocked);
 298 }
 299
 300 void wxPyApp::MacOpenURL(const wxString &url)
 301 {
 302     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 303     if (wxPyCBH_findCallback(m_myInst, "MacOpenURL")) {
 304         PyObject* s = wx2PyString(url);
 305         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 306         Py_DECREF(s);
 307     }
 308     wxPyEndBlockThreads(blocked);
 309 }
 310
 311 void wxPyApp::MacPrintFile(const wxString &fileName)
 312 {
 313     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 314     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 315         PyObject* s = wx2PyString(fileName);
 316         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 317         Py_DECREF(s);
 318     }
 319     wxPyEndBlockThreads(blocked);
 320 }
 321
 322 void wxPyApp::MacNewFile()
 323 {
 324     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 325     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 326         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 327     wxPyEndBlockThreads(blocked);
 328 }
 329
 330 void wxPyApp::MacReopenApp()
 331 {
 332     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 333     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 334         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 335     wxPyEndBlockThreads(blocked);
 336 }
 337
 338
 339 /*static*/
 340 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 341     return 0;
 342 }
 343
 344 /*static*/
 345 long wxPyApp::GetMacAboutMenuItemId() {
 346 #ifdef __WXMAC__
 347     return s_macAboutMenuItemId;
 348 #else
 349     return 0;
 350 #endif
 351 }
 352
 353 /*static*/
 354 long wxPyApp::GetMacPreferencesMenuItemId() {
 355 #ifdef __WXMAC__
 356     return s_macPreferencesMenuItemId;
 357 #else
 358     return 0;
 359 #endif
 360 }
 361
 362 /*static*/
 363 long wxPyApp::GetMacExitMenuItemId() {
 364 #ifdef __WXMAC__
 365     return s_macExitMenuItemId;
 366 #else
 367     return 0;
 368 #endif
 369 }
 370
 371 /*static*/
 372 wxString wxPyApp::GetMacHelpMenuTitleName() {
 373 #ifdef __WXMAC__
 374     return s_macHelpMenuTitleName;
 375 #else
 376     return wxEmptyString;
 377 #endif
 378 }
 379
 380 /*static*/
 381 void wxPyApp::SetMacSupportPCMenuShortcuts(bool) {
 382 }
 383
 384 /*static*/
 385 void wxPyApp::SetMacAboutMenuItemId(long val) {
 386 #ifdef __WXMAC__
 387     s_macAboutMenuItemId = val;
 388 #endif
 389 }
 390
 391 /*static*/
 392 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 393 #ifdef __WXMAC__
 394     s_macPreferencesMenuItemId = val;
 395 #endif
 396 }
 397
 398 /*static*/
 399 void wxPyApp::SetMacExitMenuItemId(long val) {
 400 #ifdef __WXMAC__
 401     s_macExitMenuItemId = val;
 402 #endif
 403 }
 404
 405 /*static*/
 406 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 407 #ifdef __WXMAC__
 408     s_macHelpMenuTitleName = val;
 409 #endif
 410 }
 411
 412
 413 // This finishes the initialization of wxWindows and then calls the OnInit
 414 // that should be present in the derived (Python) class.
 415 void wxPyApp::_BootstrapApp()
 416 {
 417     static      bool haveInitialized = false;
 418     bool        result;
 419     wxPyBlock_t     blocked;
 420     PyObject*   retval = NULL;
 421     PyObject*   pyint  = NULL;
 422
 423
 424     // Only initialize wxWidgets once
 425     if (! haveInitialized) {
 426
 427         // Get any command-line args passed to this program from the sys module
 428         int    argc = 0;
 429         char** argv = NULL;
 430         blocked = wxPyBeginBlockThreads();
 431
 432         PyObject* sysargv = PySys_GetObject("argv");
 433         PyObject* executable = PySys_GetObject("executable");
 434
 435         if (sysargv != NULL && executable != NULL) {
 436             argc = PyList_Size(sysargv) + 1;
 437             argv = new char*[argc+1];
 438             argv[0] = strdup(PyString_AsString(executable));
 439             int x;
 440             for(x=1; x<argc; x++) {
 441                 PyObject *pyArg = PyList_GetItem(sysargv, x-1);
 442                 argv[x] = strdup(PyString_AsString(pyArg));
 443             }
 444             argv[argc] = NULL;
 445         }
 446         wxPyEndBlockThreads(blocked);
 447
 448         // Initialize wxWidgets
 449         result = wxEntryStart(argc, argv);
 450         // wxApp takes ownership of the argv array, don't delete it here
 451
 452         blocked = wxPyBeginBlockThreads();
 453         if (! result)  {
 454             PyErr_SetString(PyExc_SystemError,
 455                             "wxEntryStart failed, unable to initialize wxWidgets!"
 456 #ifdef __WXGTK__
 457                             "  (Is DISPLAY set properly?)"
 458 #endif
 459                 );
 460             goto error;
 461         }
 462
 463         // On wxGTK the locale will be changed to match the system settings,
 464         // but Python before 2.4 needs to have LC_NUMERIC set to "C" in order
 465         // for the floating point conversions and such to work right.
 466 #if defined(__WXGTK__) && PY_VERSION_HEX < 0x02040000
 467         setlocale(LC_NUMERIC, "C");
 468 #endif
 469
 470 //        wxSystemOptions::SetOption(wxT("mac.textcontrol-use-mlte"), 1);
 471
 472         wxPyEndBlockThreads(blocked);
 473         haveInitialized = true;
 474     }
 475     else {
 476         this->argc = 0;
 477         this->argv = NULL;
 478     }
 479
 480
 481     // It's now ok to generate exceptions for assertion errors.
 482     wxPythonApp->SetStartupComplete(true);
 483
 484
 485     // Call the Python wxApp's OnPreInit and OnInit functions
 486     blocked = wxPyBeginBlockThreads();
 487     if (wxPyCBH_findCallback(m_myInst, "OnPreInit")) {
 488         PyObject* method = m_myInst.GetLastFound();
 489         PyObject* argTuple = PyTuple_New(0);
 490         retval = PyEval_CallObject(method, argTuple);
 491         m_myInst.clearRecursionGuard(method);
 492         Py_DECREF(argTuple);
 493         Py_DECREF(method);
 494         if (retval == NULL)
 495             goto error;
 496     }
 497     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 498
 499         PyObject* method = m_myInst.GetLastFound();
 500         PyObject* argTuple = PyTuple_New(0);
 501         retval = PyEval_CallObject(method, argTuple);
 502         m_myInst.clearRecursionGuard(method);
 503         Py_DECREF(argTuple);
 504         Py_DECREF(method);
 505         if (retval == NULL)
 506             // Don't PyErr_Print here, let the exception in this case go back
 507             // up to the wx.PyApp.__init__ scope.
 508             goto error;
 509
 510         pyint = PyNumber_Int(retval);
 511         if (! pyint) {
 512             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 513             goto error;
 514         }
 515         result = PyInt_AS_LONG(pyint);
 516     }
 517     else {
 518         // Is it okay if there is no OnInit?  Probably so...
 519         result = true;
 520     }
 521
 522     if (! result) {
 523         PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
 524     }
 525
 526  error:
 527     Py_XDECREF(retval);
 528     Py_XDECREF(pyint);
 529
 530     wxPyEndBlockThreads(blocked);
 531 };
 532
 533 //---------------------------------------------------------------------
 534 //----------------------------------------------------------------------
 535
 536
 537 #if 0
 538 static char* wxPyCopyCString(const wxChar* src)
 539 {
 540     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 541     size_t len = strlen(buff);
 542     char*  dest = new char[len+1];
 543     strcpy(dest, buff);
 544     return dest;
 545 }
 546
 547 #if wxUSE_UNICODE
 548 static char* wxPyCopyCString(const char* src)   // we need a char version too
 549 {
 550     size_t len = strlen(src);
 551     char*  dest = new char[len+1];
 552     strcpy(dest, src);
 553     return dest;
 554 }
 555 #endif
 556
 557 static wxChar* wxPyCopyWString(const char *src)
 558 {
 559     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 560     wxString str(src, *wxConvCurrent);
 561     return copystring(str);
 562 }
 563
 564 #if wxUSE_UNICODE
 565 static wxChar* wxPyCopyWString(const wxChar *src)
 566 {
 567     return copystring(src);
 568 }
 569 #endif
 570 #endif
 571
 572
 573 inline const char* dropwx(const char* name) {
 574     if (name[0] == 'w' && name[1] == 'x')
 575         return name+2;
 576     else
 577         return name;
 578 }
 579
 580 //----------------------------------------------------------------------
 581
 582 // This function is called when the wx._core_ module is imported to do some
 583 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 584 // wxPyApp::_BootstrapApp
 585 void __wxPyPreStart(PyObject* moduleDict)
 586 {
 587
 588 #ifdef __WXMSW__
 589 //     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF
 590 //                     | _CRTDBG_CHECK_ALWAYS_DF
 591 //                     | _CRTDBG_DELAY_FREE_MEM_DF
 592 //         );
 593 #endif
 594
 595 #ifdef WXP_WITH_THREAD
 596 #if wxPyUSE_GIL_STATE
 597     PyEval_InitThreads();
 598 #else
 599     PyEval_InitThreads();
 600     wxPyTStates = new wxPyThreadStateArray;
 601     wxPyTMutex = new wxMutex;
 602
 603     // Save the current (main) thread state in our array
 604     PyThreadState* tstate = wxPyBeginAllowThreads();
 605     wxPyEndAllowThreads(tstate);
 606 #endif
 607 #endif
 608
 609     // Ensure that the build options in the DLL (or whatever) match this build
 610     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 611
 612     wxInitAllImageHandlers();
 613 }
 614
 615
 616
 617 void __wxPyCleanup() {
 618     wxPyDoingCleanup = true;
 619     if (wxPyDoCleanup) {
 620         wxPyDoCleanup = false;
 621         wxEntryCleanup();
 622     }
 623 #ifdef WXP_WITH_THREAD
 624 #if !wxPyUSE_GIL_STATE
 625     delete wxPyTMutex;
 626     wxPyTMutex = NULL;
 627     wxPyTStates->Empty();
 628     delete wxPyTStates;
 629     wxPyTStates = NULL;
 630 #endif
 631 #endif
 632 }
 633
 634
 635 // Save a reference to the dictionary of the wx._core module, and inject
 636 // a few more things into it.
 637 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 638 {
 639
 640     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 641         return NULL;
 642
 643     if (!PyDict_Check(wxPython_dict)) {
 644         PyErr_SetString(PyExc_TypeError,
 645                         "_wxPySetDictionary must have dictionary object!");
 646         return NULL;
 647     }
 648
 649     if (! wxPyPtrTypeMap)
 650         wxPyPtrTypeMap = PyDict_New();
 651     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 652
 653     // Create an exception object to use for wxASSERTions
 654     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 655                                             PyExc_AssertionError, NULL);
 656     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 657
 658     // Create an exception object to use when the app object hasn't been created yet
 659     wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
 660                                         PyExc_RuntimeError, NULL);
 661     PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
 662
 663
 664
 665 #ifdef __WXMOTIF__
 666 #define wxPlatform "__WXMOTIF__"
 667 #define wxPlatName "wxMotif"
 668 #endif
 669 #ifdef __WXX11__
 670 #define wxPlatform "__WXX11__"
 671 #define wxPlatName "wxX11"
 672 #endif
 673 #ifdef __WXGTK__
 674 #define wxPlatform "__WXGTK__"
 675 #define wxPlatName "wxGTK"
 676 #endif
 677 #ifdef __WXMSW__
 678 #define wxPlatform "__WXMSW__"
 679 #define wxPlatName "wxMSW"
 680 #endif
 681 #ifdef __WXMAC__
 682 #define wxPlatform "__WXMAC__"
 683 #define wxPlatName "wxMac"
 684 #endif
 685
 686 #ifdef __WXDEBUG__
 687     int wxdebug = 1;
 688 #else
 689     int wxdebug = 0;
 690 #endif
 691
 692     // These should be deprecated in favor of the PlatformInfo tuple built below...
 693     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 694     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 695     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 696
 697     // Make a tuple of strings that gives more info about the platform.
 698     PyObject* PlatInfo = PyList_New(0);
 699     PyObject* obj;
 700
 701 #define _AddInfoString(st) \
 702     obj = PyString_FromString(st); \
 703     PyList_Append(PlatInfo, obj); \
 704     Py_DECREF(obj)
 705
 706     _AddInfoString(wxPlatform);
 707     _AddInfoString(wxPlatName);
 708 #if wxUSE_UNICODE
 709     _AddInfoString("unicode");
 710 #else
 711     _AddInfoString("ansi");
 712 #endif
 713 #ifdef __WXGTK__
 714 #ifdef __WXGTK20__
 715     _AddInfoString("gtk2");
 716 #else
 717     _AddInfoString("gtk1");
 718 #endif
 719 #endif
 720 #ifdef __WXDEBUG__
 721     _AddInfoString("wx-assertions-on");
 722 #else
 723     _AddInfoString("wx-assertions-off");
 724 #endif
 725     _AddInfoString(wxPy_SWIG_VERSION);
 726 #ifdef __WXMAC__
 727     #if wxMAC_USE_CORE_GRAPHICS
 728         _AddInfoString("mac-cg");
 729     #else
 730         _AddInfoString("mac-qd");
 731     #endif
 732     #if wxMAC_USE_NATIVE_TOOLBAR
 733         _AddInfoString("mac-native-tb");
 734     #else
 735         _AddInfoString("mac-no-native-tb");
 736     #endif
 737 #endif
 738
 739 #undef _AddInfoString
 740
 741     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 742     Py_DECREF(PlatInfo);
 743     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 744
 745     RETURN_NONE();
 746 }
 747
 748
 749
 750 //---------------------------------------------------------------------------
 751
 752 // Check for existence of a wxApp, setting an exception if there isn't one.
 753 // This doesn't need to aquire the GIL because it should only be called from
 754 // an %exception before the lock is released.
 755
 756 bool wxPyCheckForApp() {
 757     if (wxTheApp != NULL)
 758         return true;
 759     else {
 760         PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
 761         return false;
 762     }
 763 }
 764
 765 //---------------------------------------------------------------------------
 766
 767 void wxPyUserData_dtor(wxPyUserData* self) {
 768     if (! wxPyDoingCleanup) {
 769         wxPyBlock_t blocked = wxPyBeginBlockThreads();
 770         Py_DECREF(self->m_obj);
 771         self->m_obj = NULL;
 772         wxPyEndBlockThreads(blocked);
 773     }
 774 }
 775
 776
 777 void wxPyClientData_dtor(wxPyClientData* self) {
 778     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 779                                         // may have already garbage collected the object...
 780         if (self->m_incRef) {
 781             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 782             Py_DECREF(self->m_obj);
 783             wxPyEndBlockThreads(blocked);
 784         }
 785         self->m_obj = NULL;
 786     }
 787 }
 788
 789
 790
 791 // This is called when an OOR controled object is being destroyed.  Although
 792 // the C++ object is going away there is no way to force the Python object
 793 // (and all references to it) to die too.  This causes problems (crashes) in
 794 // wxPython when a python shadow object attempts to call a C++ method using
 795 // the now bogus pointer... So to try and prevent this we'll do a little black
 796 // magic and change the class of the python instance to a class that will
 797 // raise an exception for any attempt to call methods with it.  See
 798 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 799 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 800
 801     static PyObject* deadObjectClass = NULL;
 802
 803     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 804     if (deadObjectClass == NULL) {
 805         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 806         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 807         // will lead to a deadlock when it tries to aquire the GIL again.
 808         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 809         Py_INCREF(deadObjectClass);
 810     }
 811
 812
 813     // Only if there is more than one reference to the object and we are
 814     // holding the OOR reference:
 815     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
 816         // bool isInstance = wxPyInstance_Check(self->m_obj);
 817         // TODO same here
 818         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 819
 820         // Call __del__, if there is one.
 821         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 822         if (func) {
 823             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 824             Py_XDECREF(rv);
 825             Py_DECREF(func);
 826         }
 827         if (PyErr_Occurred())
 828             PyErr_Clear();      // just ignore it for now
 829
 830
 831         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 832         if (dict) {
 833             // Clear the instance's dictionary
 834             PyDict_Clear(dict);
 835
 836             // put the name of the old class into the instance, and then reset the
 837             // class to be the dead class.
 838             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 839             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 840             PyDict_SetItemString(dict, "_name", name);
 841             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 842             //Py_INCREF(deadObjectClass);
 843             Py_DECREF(klass);
 844             Py_DECREF(name);
 845             Py_DECREF(dict);
 846         }
 847     }
 848
 849     // m_obj is DECREF'd in the base class dtor...
 850     wxPyEndBlockThreads(blocked);
 851 }
 852
 853
 854 //---------------------------------------------------------------------------
 855 // Stuff used by OOR to find the right wxPython class type to return and to
 856 // build it.
 857
 858
 859 // The pointer type map is used when the "pointer" type name generated by SWIG
 860 // is not the same as the shadow class name, for example wxPyTreeCtrl
 861 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 862 // so we'll just make it a Python dictionary in the wx module's namespace.
 863 // (See __wxSetDictionary)
 864 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 865     if (! wxPyPtrTypeMap)
 866         wxPyPtrTypeMap = PyDict_New();
 867     PyDict_SetItemString(wxPyPtrTypeMap,
 868                          (char*)commonName,
 869                          PyString_FromString((char*)ptrName));
 870 }
 871
 872
 873
 874
 875 PyObject*  wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
 876     PyObject* target = NULL;
 877     bool      isEvtHandler = false;
 878     bool      isSizer = false;
 879
 880     if (source) {
 881         // If it's derived from wxEvtHandler then there may
 882         // already be a pointer to a Python object that we can use
 883         // in the OOR data.
 884         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 885             isEvtHandler = true;
 886             wxEvtHandler* eh = (wxEvtHandler*)source;
 887             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 888             if (data) {
 889                 target = data->m_obj;
 890                 if (target)
 891                     Py_INCREF(target);
 892             }
 893         }
 894
 895         // Also check for wxSizer
 896         if (!target && wxIsKindOf(source, wxSizer)) {
 897             isSizer = true;
 898             wxSizer* sz = (wxSizer*)source;
 899             wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
 900             if (data) {
 901                 target = data->m_obj;
 902                 if (target)
 903                     Py_INCREF(target);
 904             }
 905         }
 906
 907         if (! target) {
 908             // Otherwise make it the old fashioned way by making a new shadow
 909             // object and putting this pointer in it.  Look up the class
 910             // heirarchy until we find a class name that is located in the
 911             // python module.
 912             const wxClassInfo* info   = source->GetClassInfo();
 913             wxString           name   = info->GetClassName();
 914             bool               exists = wxPyCheckSwigType(name);
 915             while (info && !exists) {
 916                 info = info->GetBaseClass1();
 917                 name = info->GetClassName();
 918                 exists = wxPyCheckSwigType(name);
 919             }
 920             if (info) {
 921                 target = wxPyConstructObject((void*)source, name, setThisOwn);
 922                 if (target && isEvtHandler)
 923                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
 924                 if (target && isSizer)
 925                     ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
 926             } else {
 927                 wxString msg(wxT("wxPython class not found for "));
 928                 msg += source->GetClassInfo()->GetClassName();
 929                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
 930                 target = NULL;
 931             }
 932         }
 933     } else {  // source was NULL so return None.
 934         Py_INCREF(Py_None); target = Py_None;
 935     }
 936     return target;
 937 }
 938
 939
 940 PyObject*  wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
 941
 942     return wxPyMake_wxObject(source, setThisOwn);
 943 }
 944
 945
 946 //---------------------------------------------------------------------------
 947
 948
 949 #ifdef WXP_WITH_THREAD
 950 #if !wxPyUSE_GIL_STATE
 951
 952 inline
 953 unsigned long wxPyGetCurrentThreadId() {
 954     return wxThread::GetCurrentId();
 955 }
 956
 957 static wxPyThreadState gs_shutdownTState;
 958
 959 static
 960 wxPyThreadState* wxPyGetThreadState() {
 961     if (wxPyTMutex == NULL) // Python is shutting down...
 962         return &gs_shutdownTState;
 963
 964     unsigned long ctid = wxPyGetCurrentThreadId();
 965     wxPyThreadState* tstate = NULL;
 966
 967     wxPyTMutex->Lock();
 968     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 969         wxPyThreadState& info = wxPyTStates->Item(i);
 970         if (info.tid == ctid) {
 971             tstate = &info;
 972             break;
 973         }
 974     }
 975     wxPyTMutex->Unlock();
 976     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
 977     return tstate;
 978 }
 979
 980
 981 static
 982 void wxPySaveThreadState(PyThreadState* tstate) {
 983     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
 984         gs_shutdownTState.tstate = tstate;
 985         return;
 986     }
 987     unsigned long ctid = wxPyGetCurrentThreadId();
 988     wxPyTMutex->Lock();
 989     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 990         wxPyThreadState& info = wxPyTStates->Item(i);
 991         if (info.tid == ctid) {
 992 #if 0
 993             if (info.tstate != tstate)
 994                 wxLogMessage("*** tstate mismatch!???");
 995 #endif
 996             info.tstate = tstate;    // allow for transient tstates
 997             // Normally it will never change, but apparently COM callbacks
 998             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
 999             // tstate which will then be garbage the next time we try to use
1000             // it...
1001
1002             wxPyTMutex->Unlock();
1003             return;
1004         }
1005     }
1006     // not found, so add it...
1007     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
1008     wxPyTMutex->Unlock();
1009 }
1010
1011 #endif
1012 #endif
1013
1014
1015
1016 // Calls from Python to wxWindows code are wrapped in calls to these
1017 // functions:
1018
1019 PyThreadState* wxPyBeginAllowThreads() {
1020 #ifdef WXP_WITH_THREAD
1021     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1022 #if !wxPyUSE_GIL_STATE
1023     wxPySaveThreadState(saved);
1024 #endif
1025     return saved;
1026 #else
1027     return NULL;
1028 #endif
1029 }
1030
1031 void wxPyEndAllowThreads(PyThreadState* saved) {
1032 #ifdef WXP_WITH_THREAD
1033     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1034 #endif
1035 }
1036
1037
1038
1039 // Calls from wxWindows back to Python code, or even any PyObject
1040 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1041
1042 wxPyBlock_t wxPyBeginBlockThreads() {
1043 #ifdef WXP_WITH_THREAD
1044     if (! Py_IsInitialized()) {
1045         return (wxPyBlock_t)0;
1046     }
1047 #if wxPyUSE_GIL_STATE
1048     PyGILState_STATE state = PyGILState_Ensure();
1049     return state;
1050 #else
1051     PyThreadState *current = _PyThreadState_Current;
1052
1053     // Only block if there wasn't already a tstate, or if the current one is
1054     // not the one we are wanting to change to.  This should prevent deadlock
1055     // if there are nested calls to wxPyBeginBlockThreads
1056     wxPyBlock_t blocked = false;
1057     wxPyThreadState* tstate = wxPyGetThreadState();
1058     if (current != tstate->tstate) {
1059         PyEval_RestoreThread(tstate->tstate);
1060         blocked = true;
1061     }
1062     return blocked;
1063 #endif
1064 #else
1065     return (wxPyBlock_t)0;
1066 #endif
1067 }
1068
1069
1070 void wxPyEndBlockThreads(wxPyBlock_t blocked) {
1071 #ifdef WXP_WITH_THREAD
1072     if (! Py_IsInitialized()) {
1073         return;
1074     }
1075 #if wxPyUSE_GIL_STATE
1076     PyGILState_Release(blocked);
1077 #else
1078     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1079     // The value of blocked passed in needs to be the same as that returned
1080     // from wxPyBeginBlockThreads at the same nesting level.
1081     if ( blocked ) {
1082         PyEval_SaveThread();
1083     }
1084 #endif
1085 #endif
1086 }
1087
1088
1089 //---------------------------------------------------------------------------
1090 // wxPyInputStream and wxPyCBInputStream methods
1091
1092
1093 void wxPyInputStream::close() {
1094     /* do nothing for now */
1095 }
1096
1097 void wxPyInputStream::flush() {
1098     /* do nothing for now */
1099 }
1100
1101 bool wxPyInputStream::eof() {
1102     if (m_wxis)
1103         return m_wxis->Eof();
1104     else
1105         return true;
1106 }
1107
1108 wxPyInputStream::~wxPyInputStream() {
1109     if (m_wxis)
1110         delete m_wxis;
1111 }
1112
1113
1114
1115
1116 PyObject* wxPyInputStream::read(int size) {
1117     PyObject* obj = NULL;
1118     wxMemoryBuffer buf;
1119     const int BUFSIZE = 1024;
1120
1121     // check if we have a real wxInputStream to work with
1122     if (!m_wxis) {
1123         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1124         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1125         wxPyEndBlockThreads(blocked);
1126         return NULL;
1127     }
1128
1129     if (size < 0) {
1130         // read while bytes are available on the stream
1131         while ( m_wxis->CanRead() ) {
1132             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1133             buf.UngetAppendBuf(m_wxis->LastRead());
1134         }
1135
1136     } else {  // Read only size number of characters
1137         m_wxis->Read(buf.GetWriteBuf(size), size);
1138         buf.UngetWriteBuf(m_wxis->LastRead());
1139     }
1140
1141     // error check
1142     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1143     wxStreamError err = m_wxis->GetLastError();
1144     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1145         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1146     }
1147     else {
1148         // We use only strings for the streams, not unicode
1149         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1150     }
1151     wxPyEndBlockThreads(blocked);
1152     return obj;
1153 }
1154
1155
1156 PyObject* wxPyInputStream::readline(int size) {
1157     PyObject* obj = NULL;
1158     wxMemoryBuffer buf;
1159     int i;
1160     char ch;
1161
1162     // check if we have a real wxInputStream to work with
1163     if (!m_wxis) {
1164         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1165         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1166         wxPyEndBlockThreads(blocked);
1167         return NULL;
1168     }
1169
1170     // read until \n or byte limit reached
1171     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1172         ch = m_wxis->GetC();
1173         buf.AppendByte(ch);
1174     }
1175
1176     // errorcheck
1177     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1178     wxStreamError err = m_wxis->GetLastError();
1179     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1180         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1181     }
1182     else {
1183         // We use only strings for the streams, not unicode
1184         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1185     }
1186     wxPyEndBlockThreads(blocked);
1187     return obj;
1188 }
1189
1190
1191 PyObject* wxPyInputStream::readlines(int sizehint) {
1192     PyObject* pylist;
1193
1194     // check if we have a real wxInputStream to work with
1195     if (!m_wxis) {
1196         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1197         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1198         wxPyEndBlockThreads(blocked);
1199         return NULL;
1200     }
1201
1202     // init list
1203     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1204     pylist = PyList_New(0);
1205     wxPyEndBlockThreads(blocked);
1206
1207     if (!pylist) {
1208         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1209         PyErr_NoMemory();
1210         wxPyEndBlockThreads(blocked);
1211         return NULL;
1212     }
1213
1214     // read sizehint bytes or until EOF
1215     int i;
1216     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1217         PyObject* s = this->readline();
1218         if (s == NULL) {
1219             wxPyBlock_t blocked = wxPyBeginBlockThreads();
1220             Py_DECREF(pylist);
1221             wxPyEndBlockThreads(blocked);
1222             return NULL;
1223         }
1224         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1225         PyList_Append(pylist, s);
1226         i += PyString_Size(s);
1227         wxPyEndBlockThreads(blocked);
1228     }
1229
1230     // error check
1231     wxStreamError err = m_wxis->GetLastError();
1232     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1233         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1234         Py_DECREF(pylist);
1235         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1236         wxPyEndBlockThreads(blocked);
1237         return NULL;
1238     }
1239
1240     return pylist;
1241 }
1242
1243
1244 void wxPyInputStream::seek(int offset, int whence) {
1245     if (m_wxis)
1246         m_wxis->SeekI(offset, wxSeekMode(whence));
1247 }
1248
1249 int wxPyInputStream::tell(){
1250     if (m_wxis)
1251         return m_wxis->TellI();
1252     else return 0;
1253 }
1254
1255
1256
1257
1258 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1259     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1260 {}
1261
1262 wxPyCBInputStream::wxPyCBInputStream(const wxPyCBInputStream& other)
1263 {
1264     m_read  = other.m_read;
1265     m_seek  = other.m_seek;
1266     m_tell  = other.m_tell;
1267     m_block = other.m_block;
1268     Py_INCREF(m_read);
1269     Py_INCREF(m_seek);
1270     Py_INCREF(m_tell);
1271 }
1272
1273
1274 wxPyCBInputStream::~wxPyCBInputStream() {
1275     wxPyBlock_t blocked = wxPyBlock_t_default;
1276     if (m_block) blocked = wxPyBeginBlockThreads();
1277     Py_XDECREF(m_read);
1278     Py_XDECREF(m_seek);
1279     Py_XDECREF(m_tell);
1280     if (m_block) wxPyEndBlockThreads(blocked);
1281 }
1282
1283
1284 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1285     wxPyBlock_t blocked = wxPyBlock_t_default;
1286     if (block) blocked = wxPyBeginBlockThreads();
1287
1288     PyObject* read = getMethod(py, "read");
1289     PyObject* seek = getMethod(py, "seek");
1290     PyObject* tell = getMethod(py, "tell");
1291
1292     if (!read) {
1293         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1294         Py_XDECREF(read);
1295         Py_XDECREF(seek);
1296         Py_XDECREF(tell);
1297         if (block) wxPyEndBlockThreads(blocked);
1298         return NULL;
1299     }
1300
1301     if (block) wxPyEndBlockThreads(blocked);
1302     return new wxPyCBInputStream(read, seek, tell, block);
1303 }
1304
1305
1306 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1307     return wxPyCBInputStream::create(py, block);
1308 }
1309
1310 wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other) {
1311     return new wxPyCBInputStream(*other);
1312 }
1313
1314 PyObject* wxPyCBInputStream::getMethod(PyObject* py, char* name) {
1315     if (!PyObject_HasAttrString(py, name))
1316         return NULL;
1317     PyObject* o = PyObject_GetAttrString(py, name);
1318     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1319         Py_DECREF(o);
1320         return NULL;
1321     }
1322     return o;
1323 }
1324
1325
1326 wxFileOffset wxPyCBInputStream::GetLength() const {
1327     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1328     if (m_seek && m_tell) {
1329         wxFileOffset temp = self->OnSysTell();
1330         wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
1331         self->OnSysSeek(temp, wxFromStart);
1332         return ret;
1333     }
1334     else
1335         return wxInvalidOffset;
1336 }
1337
1338
1339 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1340     if (bufsize == 0)
1341         return 0;
1342
1343     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1344     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1345     PyObject* result = PyEval_CallObject(m_read, arglist);
1346     Py_DECREF(arglist);
1347
1348     size_t o = 0;
1349     if ((result != NULL) && PyString_Check(result)) {
1350         o = PyString_Size(result);
1351         if (o == 0)
1352             m_lasterror = wxSTREAM_EOF;
1353         if (o > bufsize)
1354             o = bufsize;
1355         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1356         Py_DECREF(result);
1357
1358     }
1359     else
1360         m_lasterror = wxSTREAM_READ_ERROR;
1361     wxPyEndBlockThreads(blocked);
1362     return o;
1363 }
1364
1365 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1366     m_lasterror = wxSTREAM_WRITE_ERROR;
1367     return 0;
1368 }
1369
1370
1371 wxFileOffset wxPyCBInputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
1372     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1373     PyObject* arglist = PyTuple_New(2);
1374
1375     if (sizeof(wxFileOffset) > sizeof(long))
1376         // wxFileOffset is a 64-bit value...
1377         PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
1378     else
1379         PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
1380
1381     PyTuple_SET_ITEM(arglist, 1, PyInt_FromLong(mode));
1382
1383
1384     PyObject* result = PyEval_CallObject(m_seek, arglist);
1385     Py_DECREF(arglist);
1386     Py_XDECREF(result);
1387     wxPyEndBlockThreads(blocked);
1388     return OnSysTell();
1389 }
1390
1391
1392 wxFileOffset wxPyCBInputStream::OnSysTell() const {
1393     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1394     PyObject* arglist = Py_BuildValue("()");
1395     PyObject* result = PyEval_CallObject(m_tell, arglist);
1396     Py_DECREF(arglist);
1397     wxFileOffset o = 0;
1398     if (result != NULL) {
1399         if (PyLong_Check(result))
1400             o = PyLong_AsLongLong(result);
1401         else
1402             o = PyInt_AsLong(result);
1403         Py_DECREF(result);
1404     };
1405     wxPyEndBlockThreads(blocked);
1406     return o;
1407 }
1408
1409 //----------------------------------------------------------------------
1410
1411 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1412
1413 wxPyCallback::wxPyCallback(PyObject* func) {
1414     m_func = func;
1415     Py_INCREF(m_func);
1416 }
1417
1418 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1419     m_func = other.m_func;
1420     Py_INCREF(m_func);
1421 }
1422
1423 wxPyCallback::~wxPyCallback() {
1424     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1425     Py_DECREF(m_func);
1426     wxPyEndBlockThreads(blocked);
1427 }
1428
1429
1430 #define wxPy_PRECALLINIT     "_preCallInit"
1431 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1432
1433 // This function is used for all events destined for Python event handlers.
1434 void wxPyCallback::EventThunker(wxEvent& event) {
1435     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1436     PyObject*       func = cb->m_func;
1437     PyObject*       result;
1438     PyObject*       arg;
1439     PyObject*       tuple;
1440     bool            checkSkip = false;
1441
1442     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1443     wxString className = event.GetClassInfo()->GetClassName();
1444
1445     // If the event is one of these types then pass the original
1446     // event object instead of the one passed to us.
1447     if ( className == wxT("wxPyEvent") ) {
1448         arg =       ((wxPyEvent*)&event)->GetSelf();
1449         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1450     }
1451     else if ( className == wxT("wxPyCommandEvent") ) {
1452         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1453         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1454     }
1455     else {
1456         arg = wxPyConstructObject((void*)&event, className);
1457     }
1458
1459     if (!arg) {
1460         PyErr_Print();
1461     } else {
1462         // "intern" the pre/post method names to speed up the HasAttr
1463         static PyObject* s_preName  = NULL;
1464         static PyObject* s_postName = NULL;
1465         if (s_preName == NULL) {
1466             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1467             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1468         }
1469
1470         // Check if the event object needs some preinitialization
1471         if (PyObject_HasAttr(arg, s_preName)) {
1472             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1473             if ( result ) {
1474                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1475                 PyErr_Clear();       // Just in case...
1476             } else {
1477                 PyErr_Print();
1478             }
1479         }
1480
1481         // Call the event handler, passing the event object
1482         tuple = PyTuple_New(1);
1483         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1484         result = PyEval_CallObject(func, tuple);
1485         if ( result ) {
1486             Py_DECREF(result);   // result is ignored, but we still need to decref it
1487             PyErr_Clear();       // Just in case...
1488         } else {
1489             PyErr_Print();
1490         }
1491
1492         // Check if the event object needs some post cleanup
1493         if (PyObject_HasAttr(arg, s_postName)) {
1494             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1495             if ( result ) {
1496                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1497                 PyErr_Clear();       // Just in case...
1498             } else {
1499                 PyErr_Print();
1500             }
1501         }
1502
1503         if ( checkSkip ) {
1504             // if the event object was one of our special types and
1505             // it had been cloned, then we need to extract the Skipped
1506             // value from the original and set it in the clone.
1507             result = PyObject_CallMethod(arg, "GetSkipped", "");
1508             if ( result ) {
1509                 event.Skip(PyInt_AsLong(result));
1510                 Py_DECREF(result);
1511             } else {
1512                 PyErr_Print();
1513             }
1514         }
1515         Py_DECREF(tuple);
1516     }
1517     wxPyEndBlockThreads(blocked);
1518 }
1519
1520
1521 //----------------------------------------------------------------------
1522
1523 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1524       m_lastFound = NULL;
1525       m_self = other.m_self;
1526       m_class = other.m_class;
1527       if (m_self) {
1528           Py_INCREF(m_self);
1529           Py_INCREF(m_class);
1530       }
1531 }
1532
1533
1534 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1535     m_self = self;
1536     m_class = klass;
1537     m_incRef = incref;
1538     if (incref) {
1539         Py_INCREF(m_self);
1540         Py_INCREF(m_class);
1541     }
1542 }
1543
1544
1545 #if PYTHON_API_VERSION >= 1011
1546
1547 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1548 // in which the method was defined.  Starting with 2.2 it returns
1549 // "class that asked for the method" which seems totally bogus to me
1550 // but apprently it fixes some obscure problem waiting to happen in
1551 // Python.  Since the API was not documented Guido and the gang felt
1552 // safe in changing it.  Needless to say that totally screwed up the
1553 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1554 // code to find the class where the method is actually defined...
1555
1556 static
1557 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1558 {
1559     int i, n;
1560
1561     if (PyType_Check(klass)) {      // new style classes
1562         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1563         PyTypeObject* type = (PyTypeObject*)klass;
1564         PyObject *mro, *res, *base, *dict;
1565         /* Look in tp_dict of types in MRO */
1566         mro = type->tp_mro;
1567         assert(PyTuple_Check(mro));
1568         n = PyTuple_GET_SIZE(mro);
1569         for (i = 0; i < n; i++) {
1570             base = PyTuple_GET_ITEM(mro, i);
1571             if (PyClass_Check(base))
1572                 dict = ((PyClassObject *)base)->cl_dict;
1573             else {
1574                 assert(PyType_Check(base));
1575                 dict = ((PyTypeObject *)base)->tp_dict;
1576             }
1577             assert(dict && PyDict_Check(dict));
1578             res = PyDict_GetItem(dict, name);
1579             if (res != NULL)
1580                 return base;
1581         }
1582         return NULL;
1583     }
1584
1585     else if (PyClass_Check(klass)) { // old style classes
1586         // This code is borrowed/adapted from class_lookup in classobject.c
1587         PyClassObject* cp = (PyClassObject*)klass;
1588         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1589         if (value != NULL) {
1590             return (PyObject*)cp;
1591         }
1592         n = PyTuple_Size(cp->cl_bases);
1593         for (i = 0; i < n; i++) {
1594             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1595             PyObject *v = PyFindClassWithAttr(base, name);
1596             if (v != NULL)
1597                 return v;
1598         }
1599         return NULL;
1600     }
1601     return NULL;
1602 }
1603 #endif
1604
1605
1606 static
1607 PyObject* PyMethod_GetDefiningClass(PyObject* method, PyObject* nameo)
1608 {
1609     PyObject* mgc = PyMethod_GET_CLASS(method);
1610
1611 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1612     return mgc;
1613 #else                             // 2.2 and after, the hard way...
1614     return PyFindClassWithAttr(mgc, nameo);
1615 #endif
1616 }
1617
1618
1619
1620 // To avoid recursion when an overridden virtual method wants to call the base
1621 // class version, temporarily set an attribute in the instance with the same
1622 // name as the method.  Then the PyObject_GetAttr in the next findCallback
1623 // will return this attribute and the PyMethod_Check will fail.
1624
1625 void wxPyCallbackHelper::setRecursionGuard(PyObject* method) const
1626 {
1627     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1628     PyObject_SetAttr(m_self, func->func_name, Py_None);
1629 }
1630
1631 void wxPyCallbackHelper::clearRecursionGuard(PyObject* method) const
1632 {
1633     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1634     if (PyObject_HasAttr(m_self, func->func_name)) {
1635         PyObject_DelAttr(m_self, func->func_name);
1636     }
1637 }
1638
1639 // bool wxPyCallbackHelper::hasRecursionGuard(PyObject* method) const
1640 // {
1641 //     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1642 //     if (PyObject_HasAttr(m_self, func->func_name)) {
1643 //         PyObject* attr = PyObject_GetAttr(m_self, func->func_name);
1644 //         bool retval = (attr == Py_None);
1645 //         Py_DECREF(attr);
1646 //         return retval;
1647 //     }
1648 //     return false;
1649 // }
1650
1651
1652 bool wxPyCallbackHelper::findCallback(const char* name, bool setGuard) const {
1653     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1654     PyObject *method, *klass;
1655     PyObject* nameo = PyString_FromString(name);
1656     self->m_lastFound = NULL;
1657
1658     // If the object (m_self) has an attibute of the given name...
1659     if (m_self && PyObject_HasAttr(m_self, nameo)) {
1660         method = PyObject_GetAttr(m_self, nameo);
1661
1662         // ...and if that attribute is a method, and if that method's class is
1663         // not from the registered class or a base class...
1664         if (PyMethod_Check(method) &&
1665             (klass = PyMethod_GetDefiningClass(method, nameo)) != NULL &&
1666             (klass != m_class) &&
1667             PyObject_IsSubclass(klass, m_class)) {
1668
1669             // ...then we'll save a pointer to the method so callCallback can
1670             // call it.  But first, set a recursion guard in case the
1671             // overridden method wants to call the base class version.
1672             if (setGuard)
1673                 setRecursionGuard(method);
1674             self->m_lastFound = method;
1675         }
1676         else {
1677             Py_DECREF(method);
1678         }
1679     }
1680
1681     Py_DECREF(nameo);
1682     return m_lastFound != NULL;
1683 }
1684
1685
1686 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1687     PyObject*   result;
1688     int         retval = false;
1689
1690     result = callCallbackObj(argTuple);
1691     if (result) {                       // Assumes an integer return type...
1692         retval = PyInt_AsLong(result);
1693         Py_DECREF(result);
1694         PyErr_Clear();                  // forget about it if it's not...
1695     }
1696     return retval;
1697 }
1698
1699 // Invoke the Python callable object, returning the raw PyObject return
1700 // value.  Caller should DECREF the return value and also manage the GIL.
1701 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1702     PyObject* result;
1703
1704     // Save a copy of the pointer in case the callback generates another
1705     // callback.  In that case m_lastFound will have a different value when
1706     // it gets back here...
1707     PyObject* method = m_lastFound;
1708
1709     result = PyEval_CallObject(method, argTuple);
1710     clearRecursionGuard(method);
1711
1712     Py_DECREF(argTuple);
1713     Py_DECREF(method);
1714     if (!result) {
1715         PyErr_Print();
1716     }
1717     return result;
1718 }
1719
1720
1721 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1722     cbh.setSelf(self, klass, incref);
1723 }
1724
1725 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name, bool setGuard) {
1726     return cbh.findCallback(name, setGuard);
1727 }
1728
1729 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1730     return cbh.callCallback(argTuple);
1731 }
1732
1733 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1734     return cbh.callCallbackObj(argTuple);
1735 }
1736
1737
1738 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1739     if (cbh->m_incRef && Py_IsInitialized()) {
1740         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1741         Py_XDECREF(cbh->m_self);
1742         Py_XDECREF(cbh->m_class);
1743         wxPyEndBlockThreads(blocked);
1744     }
1745 }
1746
1747 //---------------------------------------------------------------------------
1748 //---------------------------------------------------------------------------
1749 // These event classes can be derived from in Python and passed through the event
1750 // system without losing anything.  They do this by keeping a reference to
1751 // themselves and some special case handling in wxPyCallback::EventThunker.
1752
1753
1754 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1755     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1756     //Py_INCREF(m_self);        //      circular loops...
1757     m_cloned = false;
1758 }
1759
1760 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1761     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1762     if (m_cloned)
1763         Py_DECREF(m_self);
1764     wxPyEndBlockThreads(blocked);
1765 }
1766
1767 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1768     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1769     if (m_cloned)
1770         Py_DECREF(m_self);
1771     m_self = self;
1772     if (clone) {
1773         Py_INCREF(m_self);
1774         m_cloned = true;
1775     }
1776     wxPyEndBlockThreads(blocked);
1777 }
1778
1779 PyObject* wxPyEvtSelfRef::GetSelf() const {
1780     Py_INCREF(m_self);
1781     return m_self;
1782 }
1783
1784
1785 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1786 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1787
1788
1789 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1790     : wxEvent(winid, commandType) {
1791 }
1792
1793
1794 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1795     : wxEvent(evt)
1796 {
1797     SetSelf(evt.m_self, true);
1798 }
1799
1800
1801 wxPyEvent::~wxPyEvent() {
1802 }
1803
1804
1805 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
1806     : wxCommandEvent(commandType, id) {
1807 }
1808
1809
1810 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
1811     : wxCommandEvent(evt)
1812 {
1813     SetSelf(evt.m_self, true);
1814 }
1815
1816
1817 wxPyCommandEvent::~wxPyCommandEvent() {
1818 }
1819
1820
1821
1822
1823
1824 //---------------------------------------------------------------------------
1825 //---------------------------------------------------------------------------
1826 // Convert a wxList to a Python List, only works for lists of wxObjects
1827
1828 PyObject* wxPy_ConvertList(wxListBase* listbase) {
1829     wxList*     list = (wxList*)listbase;  // this is probably bad...
1830     PyObject*   pyList;
1831     PyObject*   pyObj;
1832     wxObject*   wxObj;
1833     wxNode*     node = list->GetFirst();
1834
1835     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1836     pyList = PyList_New(0);
1837     while (node) {
1838         wxObj = node->GetData();
1839         pyObj = wxPyMake_wxObject(wxObj,false);
1840         PyList_Append(pyList, pyObj);
1841         Py_DECREF(pyObj);  // the Append also does an INCREF, that's one more than we need.
1842         node = node->GetNext();
1843     }
1844     wxPyEndBlockThreads(blocked);
1845     return pyList;
1846 }
1847
1848 //----------------------------------------------------------------------
1849
1850 long wxPyGetWinHandle(wxWindow* win) {
1851
1852 #ifdef __WXMSW__
1853     return (long)win->GetHandle();
1854 #endif
1855
1856 #if defined(__WXGTK__) || defined(__WXX11)
1857     return (long)GetXWindow(win);
1858 #endif
1859
1860 #ifdef __WXMAC__
1861     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
1862     return (long)win->GetHandle();
1863 #endif
1864
1865     return 0;
1866 }
1867
1868 //----------------------------------------------------------------------
1869 // Some helper functions for typemaps in my_typemaps.i, so they won't be
1870 // included in every file over and over again...
1871
1872 wxString* wxString_in_helper(PyObject* source) {
1873     wxString* target = NULL;
1874
1875     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
1876         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
1877         return NULL;
1878     }
1879 #if wxUSE_UNICODE
1880     PyObject* uni = source;
1881     if (PyString_Check(source)) {
1882         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1883         if (PyErr_Occurred()) return NULL;
1884     }
1885     target = new wxString();
1886     size_t len = PyUnicode_GET_SIZE(uni);
1887     if (len) {
1888         PyUnicode_AsWideChar((PyUnicodeObject*)uni, wxStringBuffer(*target, len), len);
1889     }
1890
1891     if (PyString_Check(source))
1892         Py_DECREF(uni);
1893 #else
1894     // Convert to a string object if it isn't already, then to wxString
1895     PyObject* str = source;
1896     if (PyUnicode_Check(source)) {
1897         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1898         if (PyErr_Occurred()) return NULL;
1899     }
1900     else if (!PyString_Check(source)) {
1901         str = PyObject_Str(source);
1902         if (PyErr_Occurred()) return NULL;
1903     }
1904     char* tmpPtr; Py_ssize_t tmpSize;
1905     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1906     target = new wxString(tmpPtr, tmpSize);
1907
1908     if (!PyString_Check(source))
1909         Py_DECREF(str);
1910 #endif // wxUSE_UNICODE
1911
1912     return target;
1913 }
1914
1915
1916 // Similar to above except doesn't use "new" and doesn't set an exception
1917 wxString Py2wxString(PyObject* source)
1918 {
1919     wxString target;
1920
1921 #if wxUSE_UNICODE
1922     // Convert to a unicode object, if not already, then to a wxString
1923     PyObject* uni = source;
1924     if (!PyUnicode_Check(source)) {
1925         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
1926         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
1927     }
1928     size_t len = PyUnicode_GET_SIZE(uni);
1929     if (len) {
1930         PyUnicode_AsWideChar((PyUnicodeObject*)uni, wxStringBuffer(target, len), len);
1931     }
1932
1933     if (!PyUnicode_Check(source))
1934         Py_DECREF(uni);
1935 #else
1936     // Convert to a string object if it isn't already, then to wxString
1937     PyObject* str = source;
1938     if (PyUnicode_Check(source)) {
1939         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
1940         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1941     }
1942     else if (!PyString_Check(source)) {
1943         str = PyObject_Str(source);
1944         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
1945     }
1946     char* tmpPtr; Py_ssize_t tmpSize;
1947     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
1948     target = wxString(tmpPtr, tmpSize);
1949
1950     if (!PyString_Check(source))
1951         Py_DECREF(str);
1952 #endif // wxUSE_UNICODE
1953
1954     return target;
1955 }
1956
1957
1958 // Make either a Python String or Unicode object, depending on build mode
1959 PyObject* wx2PyString(const wxString& src)
1960 {
1961     PyObject* str;
1962 #if wxUSE_UNICODE
1963     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
1964 #else
1965     str = PyString_FromStringAndSize(src.c_str(), src.Len());
1966 #endif
1967     return str;
1968 }
1969
1970
1971
1972 void wxSetDefaultPyEncoding(const char* encoding)
1973 {
1974     strncpy(wxPyDefaultEncoding, encoding, DEFAULTENCODING_SIZE);
1975 }
1976
1977 const char* wxGetDefaultPyEncoding()
1978 {
1979     return wxPyDefaultEncoding;
1980 }
1981
1982 //----------------------------------------------------------------------
1983
1984
1985 byte* byte_LIST_helper(PyObject* source) {
1986     if (!PyList_Check(source)) {
1987         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
1988         return NULL;
1989     }
1990     int count = PyList_Size(source);
1991     byte* temp = new byte[count];
1992     if (! temp) {
1993         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
1994         return NULL;
1995     }
1996     for (int x=0; x<count; x++) {
1997         PyObject* o = PyList_GetItem(source, x);
1998         if (! PyInt_Check(o)) {
1999             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2000             return NULL;
2001         }
2002         temp[x] = (byte)PyInt_AsLong(o);
2003     }
2004     return temp;
2005 }
2006
2007
2008 int* int_LIST_helper(PyObject* source) {
2009     if (!PyList_Check(source)) {
2010         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2011         return NULL;
2012     }
2013     int count = PyList_Size(source);
2014     int* temp = new int[count];
2015     if (! temp) {
2016         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2017         return NULL;
2018     }
2019     for (int x=0; x<count; x++) {
2020         PyObject* o = PyList_GetItem(source, x);
2021         if (! PyInt_Check(o)) {
2022             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2023             return NULL;
2024         }
2025         temp[x] = PyInt_AsLong(o);
2026     }
2027     return temp;
2028 }
2029
2030
2031 long* long_LIST_helper(PyObject* source) {
2032     if (!PyList_Check(source)) {
2033         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2034         return NULL;
2035     }
2036     int count = PyList_Size(source);
2037     long* temp = new long[count];
2038     if (! temp) {
2039         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2040         return NULL;
2041     }
2042     for (int x=0; x<count; x++) {
2043         PyObject* o = PyList_GetItem(source, x);
2044         if (! PyInt_Check(o)) {
2045             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2046             return NULL;
2047         }
2048         temp[x] = PyInt_AsLong(o);
2049     }
2050     return temp;
2051 }
2052
2053
2054 char** string_LIST_helper(PyObject* source) {
2055     if (!PyList_Check(source)) {
2056         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2057         return NULL;
2058     }
2059     int count = PyList_Size(source);
2060     char** temp = new char*[count];
2061     if (! temp) {
2062         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2063         return NULL;
2064     }
2065     for (int x=0; x<count; x++) {
2066         PyObject* o = PyList_GetItem(source, x);
2067         if (! PyString_Check(o)) {
2068             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2069             return NULL;
2070         }
2071         temp[x] = PyString_AsString(o);
2072     }
2073     return temp;
2074 }
2075
2076 //---------------------------------------------------------------------------
2077 // NOTE: The following functions could really use some refactoring using
2078 // templates to make things somewhat simpler...
2079
2080 inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point)
2081 {
2082     // get the x value
2083     if (PyInt_Check(o1))
2084         point->x = (int)PyInt_AS_LONG(o1);
2085     else if (PyFloat_Check(o1))
2086         point->x = (int)PyFloat_AS_DOUBLE(o1);
2087     else if (PyNumber_Check(o1))
2088         point->x = (int)PyInt_AsLong(o1);
2089     else
2090         return false;
2091
2092     // get the y value
2093     if (PyInt_Check(o2))
2094         point->y = (int)PyInt_AS_LONG(o2);
2095     else if (PyFloat_Check(o2))
2096         point->y = (int)PyFloat_AS_DOUBLE(o2);
2097     else if (PyNumber_Check(o2))
2098         point->y = (int)PyInt_AsLong(o2);
2099     else
2100         return false;
2101
2102     return true;
2103
2104 // NOTE: This function used to have this code in it, but I don't know why it
2105 // is a problem nor what havok it will cause, so removing for now...
2106 //     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {
2107 //         // Disallow instances because they can cause havok
2108 //         return false;
2109 //     }
2110 }
2111
2112
2113 inline bool wxPoint2DFromObjects(PyObject* o1, PyObject* o2, wxPoint2D* point)
2114 {
2115     // get the x value
2116     if (PyInt_Check(o1))
2117         point->m_x = (double)PyInt_AS_LONG(o1);
2118     else if (PyFloat_Check(o1))
2119         point->m_x = (double)PyFloat_AS_DOUBLE(o1);
2120     else if (PyNumber_Check(o1))
2121         point->m_x = (double)PyFloat_AsDouble(o1);
2122     else
2123         return false;
2124
2125     // get the y value
2126     if (PyInt_Check(o2))
2127         point->m_y = (double)PyInt_AS_LONG(o2);
2128     else if (PyFloat_Check(o2))
2129         point->m_y = (double)PyFloat_AS_DOUBLE(o2);
2130     else if (PyNumber_Check(o2))
2131         point->m_y = (double)PyFloat_AsDouble(o2);
2132     else
2133         return false;
2134
2135     return true;
2136 }
2137
2138
2139
2140 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count)
2141 {
2142     int idx;
2143     wxPoint* temp;
2144     PyObject *o, *o1, *o2;
2145     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2146
2147     if (!PySequence_Check(source)) {
2148         goto error0;
2149     }
2150
2151     // The length of the sequence is returned in count.
2152     *count = PySequence_Length(source);
2153     if (*count < 0) {
2154         goto error0;
2155     }
2156
2157     temp = new wxPoint[*count];
2158     if (!temp) {
2159         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2160         return NULL;
2161     }
2162     for (idx=0; idx<*count; idx++) {
2163         // Get an item: try fast way first.
2164         if (isFast) {
2165             o = PySequence_Fast_GET_ITEM(source, idx);
2166         }
2167         else {
2168             o = PySequence_GetItem(source, idx);
2169             if (o == NULL) {
2170                 goto error1;
2171             }
2172         }
2173
2174         // Convert o to wxPoint.
2175         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2176             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2177             o1 = PySequence_Fast_GET_ITEM(o, 0);
2178             o2 = PySequence_Fast_GET_ITEM(o, 1);
2179             if (!wxPointFromObjects(o1, o2, &temp[idx])) {
2180                 goto error2;
2181             }
2182         }
2183         else if (wxPySwigInstance_Check(o)) {
2184             wxPoint* pt;
2185             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2186                 goto error2;
2187             }
2188             temp[idx] = *pt;
2189         }
2190         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2191             o1 = PySequence_GetItem(o, 0);
2192             o2 = PySequence_GetItem(o, 1);
2193             if (!wxPointFromObjects(o1, o2, &temp[idx])) {
2194                 goto error3;
2195             }
2196             Py_DECREF(o1);
2197             Py_DECREF(o2);
2198         }
2199         else {
2200             goto error2;
2201         }
2202         // Clean up.
2203         if (!isFast)
2204             Py_DECREF(o);
2205     }
2206     return temp;
2207
2208 error3:
2209     Py_DECREF(o1);
2210     Py_DECREF(o2);
2211 error2:
2212     if (!isFast)
2213         Py_DECREF(o);
2214 error1:
2215     delete [] temp;
2216 error0:
2217     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2218     return NULL;
2219 }
2220
2221
2222
2223 wxPoint2D* wxPoint2D_LIST_helper(PyObject* source, size_t *count)
2224 {
2225     size_t idx;
2226     wxPoint2D* temp;
2227     PyObject *o, *o1, *o2;
2228     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2229
2230     if (!PySequence_Check(source)) {
2231         goto error0;
2232     }
2233
2234     // The length of the sequence is returned in count.
2235     *count = PySequence_Length(source);
2236     if (*count < 0) {
2237         goto error0;
2238     }
2239
2240     temp = new wxPoint2D[*count];
2241     if (!temp) {
2242         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2243         return NULL;
2244     }
2245     for (idx=0; idx<*count; idx++) {
2246         // Get an item: try fast way first.
2247         if (isFast) {
2248             o = PySequence_Fast_GET_ITEM(source, idx);
2249         }
2250         else {
2251             o = PySequence_GetItem(source, idx);
2252             if (o == NULL) {
2253                 goto error1;
2254             }
2255         }
2256
2257         // Convert o to wxPoint.
2258         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2259             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2260             o1 = PySequence_Fast_GET_ITEM(o, 0);
2261             o2 = PySequence_Fast_GET_ITEM(o, 1);
2262             if (!wxPoint2DFromObjects(o1, o2, &temp[idx])) {
2263                 goto error2;
2264             }
2265         }
2266         else if (wxPySwigInstance_Check(o)) {
2267             wxPoint2D* pt;
2268             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint2D"))) {
2269                 goto error2;
2270             }
2271             temp[idx] = *pt;
2272         }
2273         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2274             o1 = PySequence_GetItem(o, 0);
2275             o2 = PySequence_GetItem(o, 1);
2276             if (!wxPoint2DFromObjects(o1, o2, &temp[idx])) {
2277                 goto error3;
2278             }
2279             Py_DECREF(o1);
2280             Py_DECREF(o2);
2281         }
2282         else {
2283             goto error2;
2284         }
2285         // Clean up.
2286         if (!isFast)
2287             Py_DECREF(o);
2288     }
2289     return temp;
2290
2291 error3:
2292     Py_DECREF(o1);
2293     Py_DECREF(o2);
2294 error2:
2295     if (!isFast)
2296         Py_DECREF(o);
2297 error1:
2298     delete [] temp;
2299 error0:
2300     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoint2Ds.");
2301     return NULL;
2302 }
2303
2304 //---------------------------------------------------------------------------
2305
2306
2307 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2308     if (!PyList_Check(source)) {
2309         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2310         return NULL;
2311     }
2312     int count = PyList_Size(source);
2313     wxBitmap** temp = new wxBitmap*[count];
2314     if (! temp) {
2315         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2316         return NULL;
2317     }
2318     for (int x=0; x<count; x++) {
2319         PyObject* o = PyList_GetItem(source, x);
2320         if (wxPySwigInstance_Check(o)) {
2321             wxBitmap*    pt;
2322             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2323                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2324                 return NULL;
2325             }
2326             temp[x] = pt;
2327         }
2328         else {
2329             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2330             return NULL;
2331         }
2332     }
2333     return temp;
2334 }
2335
2336
2337
2338 wxString* wxString_LIST_helper(PyObject* source) {
2339     if (!PyList_Check(source)) {
2340         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2341         return NULL;
2342     }
2343     int count = PyList_Size(source);
2344     wxString* temp = new wxString[count];
2345     if (! temp) {
2346         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2347         return NULL;
2348     }
2349     for (int x=0; x<count; x++) {
2350         PyObject* o = PyList_GetItem(source, x);
2351 #if PYTHON_API_VERSION >= 1009
2352         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2353             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2354             return NULL;
2355         }
2356 #else
2357         if (! PyString_Check(o)) {
2358             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2359             return NULL;
2360         }
2361 #endif
2362
2363         wxString* pStr = wxString_in_helper(o);
2364         temp[x] = *pStr;
2365         delete pStr;
2366     }
2367     return temp;
2368 }
2369
2370
2371 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2372     if (!PyList_Check(source)) {
2373         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2374         return NULL;
2375     }
2376     int count                = PyList_Size(source);
2377     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2378     if (! temp) {
2379         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2380         return NULL;
2381     }
2382     for (int x=0; x<count; x++) {
2383         PyObject* o = PyList_GetItem(source, x);
2384         if (wxPySwigInstance_Check(o)) {
2385             wxAcceleratorEntry* ae;
2386             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2387                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2388                 return NULL;
2389             }
2390             temp[x] = *ae;
2391         }
2392         else if (PyTuple_Check(o)) {
2393             PyObject* o1 = PyTuple_GetItem(o, 0);
2394             PyObject* o2 = PyTuple_GetItem(o, 1);
2395             PyObject* o3 = PyTuple_GetItem(o, 2);
2396             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2397         }
2398         else {
2399             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2400             return NULL;
2401         }
2402     }
2403     return temp;
2404 }
2405
2406
2407 wxPen** wxPen_LIST_helper(PyObject* source) {
2408     if (!PyList_Check(source)) {
2409         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2410         return NULL;
2411     }
2412     int count = PyList_Size(source);
2413     wxPen** temp = new wxPen*[count];
2414     if (!temp) {
2415         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2416         return NULL;
2417     }
2418     for (int x=0; x<count; x++) {
2419         PyObject* o = PyList_GetItem(source, x);
2420         if (wxPySwigInstance_Check(o)) {
2421             wxPen*  pt;
2422             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2423                 delete temp;
2424                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2425                 return NULL;
2426             }
2427             temp[x] = pt;
2428         }
2429         else {
2430             delete temp;
2431             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2432             return NULL;
2433         }
2434     }
2435     return temp;
2436 }
2437
2438
2439 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2440     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2441     PyObject *o1, *o2;
2442
2443     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2444         return false;
2445
2446     if (isFast) {
2447         o1 = PySequence_Fast_GET_ITEM(source, 0);
2448         o2 = PySequence_Fast_GET_ITEM(source, 1);
2449     }
2450     else {
2451         o1 = PySequence_GetItem(source, 0);
2452         o2 = PySequence_GetItem(source, 1);
2453     }
2454
2455     *i1 = PyInt_AsLong(o1);
2456     *i2 = PyInt_AsLong(o2);
2457
2458     if (! isFast) {
2459         Py_DECREF(o1);
2460         Py_DECREF(o2);
2461     }
2462     return true;
2463 }
2464
2465
2466 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2467     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2468     PyObject *o1, *o2, *o3, *o4;
2469
2470     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2471         return false;
2472
2473     if (isFast) {
2474         o1 = PySequence_Fast_GET_ITEM(source, 0);
2475         o2 = PySequence_Fast_GET_ITEM(source, 1);
2476         o3 = PySequence_Fast_GET_ITEM(source, 2);
2477         o4 = PySequence_Fast_GET_ITEM(source, 3);
2478     }
2479     else {
2480         o1 = PySequence_GetItem(source, 0);
2481         o2 = PySequence_GetItem(source, 1);
2482         o3 = PySequence_GetItem(source, 2);
2483         o4 = PySequence_GetItem(source, 3);
2484     }
2485
2486     *i1 = PyInt_AsLong(o1);
2487     *i2 = PyInt_AsLong(o2);
2488     *i3 = PyInt_AsLong(o3);
2489     *i4 = PyInt_AsLong(o4);
2490
2491     if (! isFast) {
2492         Py_DECREF(o1);
2493         Py_DECREF(o2);
2494         Py_DECREF(o3);
2495         Py_DECREF(o4);
2496     }
2497     return true;
2498 }
2499
2500
2501 //----------------------------------------------------------------------
2502
2503 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2504 {
2505     void* ptr;
2506
2507     if (wxPySwigInstance_Check(source) &&
2508         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2509         return true;
2510
2511     PyErr_Clear();
2512     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2513         return true;
2514
2515     return false;
2516 }
2517
2518 bool wxSize_helper(PyObject* source, wxSize** obj)
2519 {
2520     if (source == Py_None) {
2521         **obj = wxSize(-1,-1);
2522         return true;
2523     }
2524     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2525 }
2526
2527
2528 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2529 {
2530     if (source == Py_None) {
2531         **obj = wxPoint(-1,-1);
2532         return true;
2533     }
2534     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2535 }
2536
2537
2538
2539 bool wxPosition_helper(PyObject* source, wxPosition** obj)
2540 {
2541     if (source == Py_None) {
2542         **obj = wxPosition(-1,-1);
2543         return true;
2544     }
2545     return wxPyTwoIntItem_helper(source, obj, wxT("wxPosition"));
2546 }
2547
2548
2549
2550 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2551
2552     if (source == Py_None) {
2553         **obj = wxRealPoint(-1,-1);
2554         return true;
2555     }
2556
2557     // If source is an object instance then it may already be the right type
2558     if (wxPySwigInstance_Check(source)) {
2559         wxRealPoint* ptr;
2560         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2561             goto error;
2562         *obj = ptr;
2563         return true;
2564     }
2565     // otherwise a 2-tuple of floats is expected
2566     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2567         PyObject* o1 = PySequence_GetItem(source, 0);
2568         PyObject* o2 = PySequence_GetItem(source, 1);
2569         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2570             Py_DECREF(o1);
2571             Py_DECREF(o2);
2572             goto error;
2573         }
2574         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2575         Py_DECREF(o1);
2576         Py_DECREF(o2);
2577         return true;
2578     }
2579
2580  error:
2581     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2582     return false;
2583 }
2584
2585
2586
2587 bool wxRect_helper(PyObject* source, wxRect** obj) {
2588
2589     if (source == Py_None) {
2590         **obj = wxRect(-1,-1,-1,-1);
2591         return true;
2592     }
2593
2594     // If source is an object instance then it may already be the right type
2595     if (wxPySwigInstance_Check(source)) {
2596         wxRect* ptr;
2597         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2598             goto error;
2599         *obj = ptr;
2600         return true;
2601     }
2602     // otherwise a 4-tuple of integers is expected
2603     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2604         PyObject* o1 = PySequence_GetItem(source, 0);
2605         PyObject* o2 = PySequence_GetItem(source, 1);
2606         PyObject* o3 = PySequence_GetItem(source, 2);
2607         PyObject* o4 = PySequence_GetItem(source, 3);
2608         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2609             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2610             Py_DECREF(o1);
2611             Py_DECREF(o2);
2612             Py_DECREF(o3);
2613             Py_DECREF(o4);
2614             goto error;
2615         }
2616         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2617                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2618         Py_DECREF(o1);
2619         Py_DECREF(o2);
2620         Py_DECREF(o3);
2621         Py_DECREF(o4);
2622         return true;
2623     }
2624
2625  error:
2626     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2627     return false;
2628 }
2629
2630
2631
2632 bool wxColour_helper(PyObject* source, wxColour** obj) {
2633
2634     if (source == Py_None) {
2635         **obj = wxNullColour;
2636         return true;
2637     }
2638
2639     // If source is an object instance then it may already be the right type
2640     if (wxPySwigInstance_Check(source)) {
2641         wxColour* ptr;
2642         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2643             goto error;
2644         *obj = ptr;
2645         return true;
2646     }
2647     // otherwise check for a string
2648     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2649         wxString spec = Py2wxString(source);
2650         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2651             long red, green, blue;
2652             red = green = blue = 0;
2653             spec.Mid(1,2).ToLong(&red,   16);
2654             spec.Mid(3,2).ToLong(&green, 16);
2655             spec.Mid(5,2).ToLong(&blue,  16);
2656
2657             **obj = wxColour(red, green, blue);
2658             return true;
2659         }
2660         else {                                       // it's a colour name
2661             **obj = wxColour(spec);
2662             return true;
2663         }
2664     }
2665     // last chance: 3-tuple or 4-tuple of integers is expected
2666     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2667         PyObject* o1 = PySequence_GetItem(source, 0);
2668         PyObject* o2 = PySequence_GetItem(source, 1);
2669         PyObject* o3 = PySequence_GetItem(source, 2);
2670         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2671             Py_DECREF(o1);
2672             Py_DECREF(o2);
2673             Py_DECREF(o3);
2674             goto error;
2675         }
2676         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2677         Py_DECREF(o1);
2678         Py_DECREF(o2);
2679         Py_DECREF(o3);
2680         return true;
2681     }
2682     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2683         PyObject* o1 = PySequence_GetItem(source, 0);
2684         PyObject* o2 = PySequence_GetItem(source, 1);
2685         PyObject* o3 = PySequence_GetItem(source, 2);
2686         PyObject* o4 = PySequence_GetItem(source, 3);
2687         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2688             Py_DECREF(o1);
2689             Py_DECREF(o2);
2690             Py_DECREF(o3);
2691             Py_DECREF(o4);
2692             goto error;
2693         }
2694         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3), PyInt_AsLong(o4));
2695         Py_DECREF(o1);
2696         Py_DECREF(o2);
2697         Py_DECREF(o3);
2698         Py_DECREF(o4);
2699         return true;
2700     }
2701
2702  error:
2703     PyErr_SetString(PyExc_TypeError,
2704                     "Expected a wxColour object, a string containing a colour name or '#RRGGBB', or a 3- or 4-tuple of integers.");
2705     return false;
2706 }
2707
2708
2709 bool wxColour_typecheck(PyObject* source) {
2710
2711     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2712         return true;
2713
2714     if (PyString_Check(source) || PyUnicode_Check(source))
2715         return true;
2716
2717     return false;
2718 }
2719
2720
2721
2722 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2723
2724     if (source == Py_None) {
2725         **obj = wxPoint2D(-1,-1);
2726         return true;
2727     }
2728
2729     // If source is an object instance then it may already be the right type
2730     if (wxPySwigInstance_Check(source)) {
2731         wxPoint2D* ptr;
2732         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2733             goto error;
2734         *obj = ptr;
2735         return true;
2736     }
2737     // otherwise a length-2 sequence of floats is expected
2738     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2739         PyObject* o1 = PySequence_GetItem(source, 0);
2740         PyObject* o2 = PySequence_GetItem(source, 1);
2741         // This should really check for floats, not numbers -- but that would break code.
2742         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2743             Py_DECREF(o1);
2744             Py_DECREF(o2);
2745             goto error;
2746         }
2747         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2748         Py_DECREF(o1);
2749         Py_DECREF(o2);
2750         return true;
2751     }
2752  error:
2753     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wx.Point2D object.");
2754     return false;
2755 }
2756
2757
2758
2759 bool wxRect2D_helper(PyObject* source, wxRect2D** obj) {
2760
2761     if (source == Py_None) {
2762         **obj = wxRect2D(-1,-1,-1,-1);
2763         return true;
2764     }
2765
2766     // If source is an object instance then it may already be the right type
2767     if (wxPySwigInstance_Check(source)) {
2768         wxRect2D* ptr;
2769         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect2D")))
2770             goto error;
2771         *obj = ptr;
2772         return true;
2773     }
2774     // otherwise a length-4 sequence of floats is expected
2775     if (PySequence_Check(source) && PySequence_Length(source) == 4) {
2776         PyObject* o1 = PySequence_GetItem(source, 0);
2777         PyObject* o2 = PySequence_GetItem(source, 1);
2778         PyObject* o3 = PySequence_GetItem(source, 2);
2779         PyObject* o4 = PySequence_GetItem(source, 3);
2780         // This should really check for floats, not numbers -- but that would break code.
2781         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2782             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2783             Py_DECREF(o1);
2784             Py_DECREF(o2);
2785             Py_DECREF(o3);
2786             Py_DECREF(o4);
2787             goto error;
2788         }
2789         **obj = wxRect2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2),
2790                          PyFloat_AsDouble(o3), PyFloat_AsDouble(o4));
2791         Py_DECREF(o1);
2792         Py_DECREF(o2);
2793         Py_DECREF(o3);
2794         Py_DECREF(o4);
2795         return true;
2796     }
2797  error:
2798     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of floats or a wx.Rect2D object.");
2799     return false;
2800 }
2801
2802
2803 //----------------------------------------------------------------------
2804
2805 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr)
2806 {
2807     PyObject* list = PyList_New(0);
2808     for (size_t i=0; i < arr.GetCount(); i++) {
2809 #if wxUSE_UNICODE
2810         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
2811 #else
2812         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
2813 #endif
2814         PyList_Append(list, str);
2815         Py_DECREF(str);
2816     }
2817     return list;
2818 }
2819
2820
2821 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr)
2822 {
2823     PyObject* list = PyList_New(0);
2824     for (size_t i=0; i < arr.GetCount(); i++) {
2825         PyObject* number = PyInt_FromLong(arr[i]);
2826         PyList_Append(list, number);
2827         Py_DECREF(number);
2828     }
2829     return list;
2830 }
2831
2832
2833 PyObject* wxArrayDouble2PyList_helper(const wxArrayDouble& arr)
2834 {
2835     PyObject* list = PyList_New(0);
2836     for (size_t i=0; i < arr.GetCount(); i++) {
2837         PyObject* number = PyFloat_FromDouble(arr[i]);
2838         PyList_Append(list, number);
2839         Py_DECREF(number);
2840     }
2841     return list;
2842 }
2843
2844
2845 //----------------------------------------------------------------------
2846 // wxPyImageHandler methods
2847 //
2848 // TODO: Switch these to use wxPython's standard macros and helper classes
2849 //       for calling callbacks.
2850
2851 PyObject* wxPyImageHandler::m_DoCanRead_Name = NULL;
2852 PyObject* wxPyImageHandler::m_GetImageCount_Name = NULL;
2853 PyObject* wxPyImageHandler::m_LoadFile_Name = NULL;
2854 PyObject* wxPyImageHandler::m_SaveFile_Name = NULL;
2855
2856 PyObject* wxPyImageHandler::py_InputStream(wxInputStream* stream) {
2857     return wxPyConstructObject(new wxPyInputStream(stream),
2858                                wxT("wxPyInputStream"), 0);
2859 }
2860
2861 PyObject* wxPyImageHandler::py_Image(wxImage* image) {
2862     return wxPyConstructObject(image, wxT("wxImage"), 0);
2863 }
2864
2865 PyObject* wxPyImageHandler::py_OutputStream(wxOutputStream* stream) {
2866     return wxPyConstructObject(stream, wxT("wxOutputStream"), 0);
2867 }
2868
2869 wxPyImageHandler::wxPyImageHandler():
2870     m_self(NULL)
2871 {
2872     if (!m_DoCanRead_Name) {
2873         m_DoCanRead_Name = PyString_FromString("DoCanRead");
2874         m_GetImageCount_Name = PyString_FromString("GetImageCount");
2875         m_LoadFile_Name = PyString_FromString("LoadFile");
2876         m_SaveFile_Name = PyString_FromString("SaveFile");
2877     }
2878 }
2879
2880 wxPyImageHandler::~wxPyImageHandler() {
2881     if (m_self) {
2882         Py_DECREF(m_self);
2883         m_self = NULL;
2884     }
2885 }
2886
2887 void wxPyImageHandler::_SetSelf(PyObject *self) {
2888     // should check here for isinstance(PyImageHandler) ??
2889     m_self = self;
2890     Py_INCREF(m_self);
2891 }
2892
2893 bool wxPyImageHandler::DoCanRead(wxInputStream& stream) {
2894     // check if our object has this method
2895     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2896     if (!m_self || !PyObject_HasAttr(m_self, m_DoCanRead_Name)) {
2897         wxPyEndBlockThreads(blocked);
2898         return false;
2899     }
2900
2901     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_DoCanRead_Name,
2902                                                py_InputStream(&stream), NULL);
2903     bool retval = false;
2904     if (res) {
2905         retval = PyInt_AsLong(res);
2906         Py_DECREF(res);
2907         PyErr_Clear();
2908     }
2909     else
2910         PyErr_Print();
2911     wxPyEndBlockThreads(blocked);
2912     return retval;
2913 }
2914
2915 bool wxPyImageHandler::LoadFile( wxImage* image, wxInputStream& stream,
2916                                  bool verbose, int index ) {
2917     // check if our object has this method
2918     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2919     if (!m_self || !PyObject_HasAttr(m_self, m_LoadFile_Name)) {
2920         wxPyEndBlockThreads(blocked);
2921         return false;
2922     }
2923     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_LoadFile_Name,
2924                                                py_Image(image),
2925                                                py_InputStream(&stream),
2926                                                PyInt_FromLong(verbose),
2927                                                PyInt_FromLong(index),
2928                                                NULL);
2929     bool retval = false;
2930     if (res) {
2931         retval = PyInt_AsLong(res);
2932         Py_DECREF(res);
2933         PyErr_Clear();
2934     } else
2935         PyErr_Print();
2936     wxPyEndBlockThreads(blocked);
2937     return retval;
2938 }
2939
2940 bool wxPyImageHandler::SaveFile( wxImage* image, wxOutputStream& stream,
2941                                  bool verbose ) {
2942     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2943     if (!m_self || !PyObject_HasAttr(m_self, m_SaveFile_Name)) {
2944         wxPyEndBlockThreads(blocked);
2945         return false;
2946     }
2947     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_SaveFile_Name,
2948                                                py_Image(image),
2949                                                py_OutputStream(&stream),
2950                                                PyInt_FromLong(verbose),
2951                                                NULL);
2952     bool retval = false;
2953     if(res) {
2954         retval=PyInt_AsLong(res);
2955         Py_DECREF(res);
2956         PyErr_Clear();
2957     } else
2958         PyErr_Print();
2959     wxPyEndBlockThreads(blocked);
2960     return retval;
2961 }
2962
2963 int wxPyImageHandler::GetImageCount( wxInputStream& stream ) {
2964     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2965     if (!m_self || !PyObject_HasAttr(m_self, m_GetImageCount_Name)) {
2966         wxPyEndBlockThreads(blocked);
2967         return 1;
2968     }
2969     PyObject *res=PyObject_CallMethodObjArgs(m_self, m_GetImageCount_Name,
2970                                              py_InputStream(&stream),
2971                                              NULL);
2972     int retval = 1;
2973     if(res) {
2974         retval=PyInt_AsLong(res);
2975         Py_DECREF(res);
2976         PyErr_Clear();
2977     } else
2978         PyErr_Print();
2979     wxPyEndBlockThreads(blocked);
2980     return retval;
2981 }
2982
2983
2984 //----------------------------------------------------------------------
2985 // Function to test if the Display (or whatever is the platform equivallent)
2986 // can be connected to.  This is accessable from wxPython as a staticmethod of
2987 // wx.App called DisplayAvailable().
2988
2989
2990 bool wxPyTestDisplayAvailable()
2991 {
2992 #ifdef __WXGTK__
2993     Display* display;
2994     display = XOpenDisplay(NULL);
2995     if (display == NULL)
2996         return false;
2997     XCloseDisplay(display);
2998     return true;
2999 #endif
3000
3001 #ifdef __WXMAC__
3002     // This is adapted from Python's Mac/Modules/MacOS.c in the
3003     // MacOS_WMAvailable function.
3004     bool rv;
3005     ProcessSerialNumber psn;
3006
3007     /*
3008     ** This is a fairly innocuous call to make if we don't have a window
3009     ** manager, or if we have no permission to talk to it. It will print
3010     ** a message on stderr, but at least it won't abort the process.
3011     ** It appears the function caches the result itself, and it's cheap, so
3012     ** no need for us to cache.
3013     */
3014 #ifdef kCGNullDirectDisplay
3015     /* On 10.1 CGMainDisplayID() isn't available, and
3016     ** kCGNullDirectDisplay isn't defined.
3017     */
3018     if (CGMainDisplayID() == 0) {
3019         rv = false;
3020     } else
3021 #endif
3022     {
3023         // Also foreground the application on the first call as a side-effect.
3024         if (GetCurrentProcess(&psn) < 0 || SetFrontProcess(&psn) < 0) {
3025             rv = false;
3026         } else {
3027             rv = true;
3028         }
3029     }
3030     return rv;
3031 #endif
3032
3033 #ifdef __WXMSW__
3034     // TODO...
3035     return true;
3036 #endif
3037 }
3038
3039
3040 //----------------------------------------------------------------------
3041 //----------------------------------------------------------------------
3042
3043
3044
3045