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