wxPython/src/helpers.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpers.cpp
   3 // Purpose:     Helper functions/classes for the wxPython extension module
   4 //
   5 // Author:      Robin Dunn
   6 //
   7 // Created:     1-July-1997
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 1998 by Total Control Software
  10 // Licence:     wxWindows license
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13
  14 #undef DEBUG
  15 #include <Python.h>
  16 #include "wx/wxPython/wxPython_int.h"
  17 #include "wx/wxPython/pyistream.h"
  18 #include "wx/wxPython/swigver.h"
  19 #include "wx/wxPython/twoitem.h"
  20
  21 #ifdef __WXMSW__
  22 #include <wx/msw/private.h>
  23 #include <wx/msw/winundef.h>
  24 #include <wx/msw/msvcrt.h>
  25 #endif
  26
  27 #ifdef __WXGTK__
  28 #include <gdk/gdk.h>
  29 #include <gdk/gdkx.h>
  30 #include <gtk/gtk.h>
  31 #include <gdk/gdkprivate.h>
  32 #ifdef __WXGTK20__
  33 #include <wx/gtk/win_gtk.h>
  34 #else
  35 #include <wx/gtk1/win_gtk.h>
  36 #endif
  37 #define GetXWindow(wxwin) (wxwin)->m_wxwindow ? \
  38                           GDK_WINDOW_XWINDOW(GTK_PIZZA((wxwin)->m_wxwindow)->bin_window) : \
  39                           GDK_WINDOW_XWINDOW((wxwin)->m_widget->window)
  40 #include <locale.h>
  41 #endif
  42
  43 #ifdef __WXX11__
  44 #include "wx/x11/privx.h"
  45 #define GetXWindow(wxwin)   ((Window)(wxwin)->GetHandle())
  46 #endif
  47
  48 #ifdef __WXMAC__
  49 #include <wx/mac/private.h>
  50 #endif
  51
  52 #include <wx/clipbrd.h>
  53 #include <wx/mimetype.h>
  54 #include <wx/image.h>
  55
  56 //----------------------------------------------------------------------
  57
  58 #if PYTHON_API_VERSION < 1009 && wxUSE_UNICODE
  59 #error Python must support Unicode to use wxWindows Unicode
  60 #endif
  61
  62 //----------------------------------------------------------------------
  63
  64 wxPyApp* wxPythonApp = NULL;  // Global instance of application object
  65 bool wxPyDoCleanup = false;
  66 bool wxPyDoingCleanup = false;
  67
  68
  69 #ifdef WXP_WITH_THREAD
  70 #if !wxPyUSE_GIL_STATE
  71 struct wxPyThreadState {
  72     unsigned long  tid;
  73     PyThreadState* tstate;
  74
  75     wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL)
  76         : tid(_tid), tstate(_tstate) {}
  77 };
  78
  79 #include <wx/dynarray.h>
  80 WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray);
  81 #include <wx/arrimpl.cpp>
  82 WX_DEFINE_OBJARRAY(wxPyThreadStateArray);
  83
  84 wxPyThreadStateArray* wxPyTStates = NULL;
  85 wxMutex*              wxPyTMutex = NULL;
  86
  87 #endif
  88 #endif
  89
  90
  91 #define DEFAULTENCODING_SIZE 64
  92 static char wxPyDefaultEncoding[DEFAULTENCODING_SIZE] = "ascii";
  93
  94 static PyObject* wxPython_dict = NULL;
  95 static PyObject* wxPyAssertionError = NULL;
  96 static PyObject* wxPyNoAppError = NULL;
  97
  98 PyObject* wxPyPtrTypeMap = NULL;
  99
 100
 101 #ifdef __WXMSW__             // If building for win32...
 102 //----------------------------------------------------------------------
 103 // This gets run when the DLL is loaded.  We just need to save a handle.
 104 //----------------------------------------------------------------------
 105
 106 extern "C"
 107 BOOL WINAPI DllMain(
 108     HINSTANCE   hinstDLL,    // handle to DLL module
 109     DWORD       fdwReason,   // reason for calling function
 110     LPVOID      lpvReserved  // reserved
 111    )
 112 {
 113     // If wxPython is embedded in another wxWidgets app then
 114     // the instance has already been set.
 115     if (! wxGetInstance())
 116         wxSetInstance(hinstDLL);
 117     return true;
 118 }
 119 #endif
 120
 121 //----------------------------------------------------------------------
 122 // Classes for implementing the wxp main application shell.
 123 //----------------------------------------------------------------------
 124
 125 IMPLEMENT_ABSTRACT_CLASS(wxPyApp, wxApp);
 126
 127
 128 wxPyApp::wxPyApp() {
 129     m_assertMode = wxPYAPP_ASSERT_EXCEPTION;
 130     m_startupComplete = false;
 131 }
 132
 133
 134 wxPyApp::~wxPyApp() {
 135     wxPythonApp = NULL;
 136     wxApp::SetInstance(NULL);
 137 }
 138
 139
 140 // This one isn't acutally called...  We fake it with _BootstrapApp
 141 bool wxPyApp::OnInit() {
 142     return false;
 143 }
 144
 145
 146 int  wxPyApp::MainLoop() {
 147     int retval = 0;
 148
 149     DeletePendingObjects();
 150     bool initialized = wxTopLevelWindows.GetCount() != 0;
 151     if (initialized) {
 152         if ( m_exitOnFrameDelete == Later ) {
 153             m_exitOnFrameDelete = Yes;
 154         }
 155
 156         retval = wxApp::MainLoop();
 157         OnExit();
 158     }
 159     return retval;
 160 }
 161
 162
 163 bool wxPyApp::OnInitGui() {
 164     bool rval=true;
 165     wxApp::OnInitGui();  // in this case always call the base class version
 166     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 167     if (wxPyCBH_findCallback(m_myInst, "OnInitGui"))
 168         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 169     wxPyEndBlockThreads(blocked);
 170     return rval;
 171 }
 172
 173
 174 int wxPyApp::OnExit() {
 175     int rval=0;
 176     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 177     if (wxPyCBH_findCallback(m_myInst, "OnExit"))
 178         rval = wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 179     wxPyEndBlockThreads(blocked);
 180     wxApp::OnExit();  // in this case always call the base class version
 181     return rval;
 182 }
 183
 184
 185
 186 void wxPyApp::ExitMainLoop() {
 187     bool found;
 188     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 189     if ((found = wxPyCBH_findCallback(m_myInst, "ExitMainLoop")))
 190         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 191     wxPyEndBlockThreads(blocked);
 192     if (! found)
 193         wxApp::ExitMainLoop();
 194 }
 195
 196
 197 #ifdef __WXDEBUG__
 198 void wxPyApp::OnAssertFailure(const wxChar *file,
 199                               int line,
 200                               const wxChar *func,
 201                               const wxChar *cond,
 202                               const wxChar *msg)
 203 {
 204     // if we're not fully initialized then just log the error
 205     if (! m_startupComplete) {
 206         wxString buf;
 207         buf.Alloc(4096);
 208         buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 209                    file, line, cond);
 210         if ( func && *func )
 211             buf << wxT(" in ") << func << wxT("()");
 212         if (msg != NULL)
 213             buf << wxT(": ") << msg;
 214
 215         wxLogDebug(buf);
 216         return;
 217     }
 218
 219     // If the OnAssert is overloaded in the Python class then call it...
 220     bool found;
 221     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 222     if ((found = wxPyCBH_findCallback(m_myInst, "OnAssert"))) {
 223         PyObject* fso = wx2PyString(file);
 224         PyObject* cso = wx2PyString(file);
 225         PyObject* mso;
 226         if (msg != NULL)
 227             mso = wx2PyString(file);
 228         else {
 229             mso = Py_None; Py_INCREF(Py_None);
 230         }
 231         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(OiOO)", fso, line, cso, mso));
 232         Py_DECREF(fso);
 233         Py_DECREF(cso);
 234         Py_DECREF(mso);
 235     }
 236     wxPyEndBlockThreads(blocked);
 237
 238     // ...otherwise do our own thing with it
 239     if (! found) {
 240         // ignore it?
 241         if (m_assertMode & wxPYAPP_ASSERT_SUPPRESS)
 242             return;
 243
 244         // turn it into a Python exception?
 245         if (m_assertMode & wxPYAPP_ASSERT_EXCEPTION) {
 246             wxString buf;
 247             buf.Alloc(4096);
 248             buf.Printf(wxT("C++ assertion \"%s\" failed at %s(%d)"), cond, file, line);
 249             if ( func && *func )
 250                 buf << wxT(" in ") << func << wxT("()");
 251             if (msg != NULL)
 252                 buf << wxT(": ") << msg;
 253
 254
 255             // set the exception
 256             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 257             PyObject* s = wx2PyString(buf);
 258             PyErr_SetObject(wxPyAssertionError, s);
 259             Py_DECREF(s);
 260             wxPyEndBlockThreads(blocked);
 261
 262             // Now when control returns to whatever API wrapper was called from
 263             // Python it should detect that an exception is set and will return
 264             // NULL, signalling the exception to Python.
 265         }
 266
 267         // Send it to the normal log destination, but only if
 268         // not _DIALOG because it will call this too
 269         if ( (m_assertMode & wxPYAPP_ASSERT_LOG) && !(m_assertMode & wxPYAPP_ASSERT_DIALOG)) {
 270             wxString buf;
 271             buf.Alloc(4096);
 272             buf.Printf(wxT("%s(%d): assert \"%s\" failed"),
 273                        file, line, cond);
 274             if ( func && *func )
 275                 buf << wxT(" in ") << func << wxT("()");
 276             if (msg != NULL)
 277                 buf << wxT(": ") << msg;
 278             wxLogDebug(buf);
 279         }
 280
 281         // do the normal wx assert dialog?
 282         if (m_assertMode & wxPYAPP_ASSERT_DIALOG)
 283             wxApp::OnAssertFailure(file, line, func, cond, msg);
 284     }
 285 }
 286 #endif
 287
 288     // For catching Apple Events
 289 void wxPyApp::MacOpenFile(const wxString &fileName)
 290 {
 291     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 292     if (wxPyCBH_findCallback(m_myInst, "MacOpenFile")) {
 293         PyObject* s = wx2PyString(fileName);
 294         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 295         Py_DECREF(s);
 296     }
 297     wxPyEndBlockThreads(blocked);
 298 }
 299
 300 void wxPyApp::MacOpenURL(const wxString &url)
 301 {
 302     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 303     if (wxPyCBH_findCallback(m_myInst, "MacOpenURL")) {
 304         PyObject* s = wx2PyString(url);
 305         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 306         Py_DECREF(s);
 307     }
 308     wxPyEndBlockThreads(blocked);
 309 }
 310
 311 void wxPyApp::MacPrintFile(const wxString &fileName)
 312 {
 313     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 314     if (wxPyCBH_findCallback(m_myInst, "MacPrintFile")) {
 315         PyObject* s = wx2PyString(fileName);
 316         wxPyCBH_callCallback(m_myInst, Py_BuildValue("(O)", s));
 317         Py_DECREF(s);
 318     }
 319     wxPyEndBlockThreads(blocked);
 320 }
 321
 322 void wxPyApp::MacNewFile()
 323 {
 324     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 325     if (wxPyCBH_findCallback(m_myInst, "MacNewFile"))
 326         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 327     wxPyEndBlockThreads(blocked);
 328 }
 329
 330 void wxPyApp::MacReopenApp()
 331 {
 332     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 333     if (wxPyCBH_findCallback(m_myInst, "MacReopenApp"))
 334         wxPyCBH_callCallback(m_myInst, Py_BuildValue("()"));
 335     wxPyEndBlockThreads(blocked);
 336 }
 337
 338
 339 /*static*/
 340 bool wxPyApp::GetMacSupportPCMenuShortcuts() {
 341     return 0;
 342 }
 343
 344 /*static*/
 345 long wxPyApp::GetMacAboutMenuItemId() {
 346 #ifdef __WXMAC__
 347     return s_macAboutMenuItemId;
 348 #else
 349     return 0;
 350 #endif
 351 }
 352
 353 /*static*/
 354 long wxPyApp::GetMacPreferencesMenuItemId() {
 355 #ifdef __WXMAC__
 356     return s_macPreferencesMenuItemId;
 357 #else
 358     return 0;
 359 #endif
 360 }
 361
 362 /*static*/
 363 long wxPyApp::GetMacExitMenuItemId() {
 364 #ifdef __WXMAC__
 365     return s_macExitMenuItemId;
 366 #else
 367     return 0;
 368 #endif
 369 }
 370
 371 /*static*/
 372 wxString wxPyApp::GetMacHelpMenuTitleName() {
 373 #ifdef __WXMAC__
 374     return s_macHelpMenuTitleName;
 375 #else
 376     return wxEmptyString;
 377 #endif
 378 }
 379
 380 /*static*/
 381 void wxPyApp::SetMacSupportPCMenuShortcuts(bool) {
 382 }
 383
 384 /*static*/
 385 void wxPyApp::SetMacAboutMenuItemId(long val) {
 386 #ifdef __WXMAC__
 387     s_macAboutMenuItemId = val;
 388 #endif
 389 }
 390
 391 /*static*/
 392 void wxPyApp::SetMacPreferencesMenuItemId(long val) {
 393 #ifdef __WXMAC__
 394     s_macPreferencesMenuItemId = val;
 395 #endif
 396 }
 397
 398 /*static*/
 399 void wxPyApp::SetMacExitMenuItemId(long val) {
 400 #ifdef __WXMAC__
 401     s_macExitMenuItemId = val;
 402 #endif
 403 }
 404
 405 /*static*/
 406 void wxPyApp::SetMacHelpMenuTitleName(const wxString& val) {
 407 #ifdef __WXMAC__
 408     s_macHelpMenuTitleName = val;
 409 #endif
 410 }
 411
 412
 413 // This finishes the initialization of wxWindows and then calls the OnInit
 414 // that should be present in the derived (Python) class.
 415 void wxPyApp::_BootstrapApp()
 416 {
 417     static      bool haveInitialized = false;
 418     bool        result;
 419     wxPyBlock_t     blocked;
 420     PyObject*   retval = NULL;
 421     PyObject*   pyint  = NULL;
 422
 423
 424     // Only initialize wxWidgets once
 425     if (! haveInitialized) {
 426
 427         // Get any command-line args passed to this program from the sys module
 428         int    argc = 0;
 429         char** argv = NULL;
 430         blocked = wxPyBeginBlockThreads();
 431
 432         PyObject* sysargv = PySys_GetObject("argv");
 433         PyObject* executable = PySys_GetObject("executable");
 434
 435         if (sysargv != NULL && executable != NULL) {
 436             argc = PyList_Size(sysargv) + 1;
 437             argv = new char*[argc+1];
 438             argv[0] = strdup(PyString_AsString(executable));
 439             int x;
 440             for(x=1; x<argc; x++) {
 441                 PyObject *pyArg = PyList_GetItem(sysargv, x-1);
 442                 argv[x] = strdup(PyString_AsString(pyArg));
 443             }
 444             argv[argc] = NULL;
 445         }
 446         wxPyEndBlockThreads(blocked);
 447
 448         // Initialize wxWidgets
 449         result = wxEntryStart(argc, argv);
 450         // wxApp takes ownership of the argv array, don't delete it here
 451
 452         blocked = wxPyBeginBlockThreads();
 453         if (! result)  {
 454             PyErr_SetString(PyExc_SystemError,
 455                             "wxEntryStart failed, unable to initialize wxWidgets!"
 456 #ifdef __WXGTK__
 457                             "  (Is DISPLAY set properly?)"
 458 #endif
 459                 );
 460             goto error;
 461         }
 462
 463         // On wxGTK the locale will be changed to match the system settings,
 464         // but Python before 2.4 needs to have LC_NUMERIC set to "C" in order
 465         // for the floating point conversions and such to work right.
 466 #if defined(__WXGTK__) && PY_VERSION_HEX < 0x02040000
 467         setlocale(LC_NUMERIC, "C");
 468 #endif
 469
 470 //        wxSystemOptions::SetOption(wxT("mac.textcontrol-use-mlte"), 1);
 471
 472         wxPyEndBlockThreads(blocked);
 473         haveInitialized = true;
 474     }
 475     else {
 476         this->argc = 0;
 477         this->argv = NULL;
 478     }
 479
 480
 481     // It's now ok to generate exceptions for assertion errors.
 482     wxPythonApp->SetStartupComplete(true);
 483
 484
 485     // Call the Python wxApp's OnPreInit and OnInit functions
 486     blocked = wxPyBeginBlockThreads();
 487     if (wxPyCBH_findCallback(m_myInst, "OnPreInit")) {
 488         PyObject* method = m_myInst.GetLastFound();
 489         PyObject* argTuple = PyTuple_New(0);
 490         retval = PyEval_CallObject(method, argTuple);
 491         m_myInst.clearRecursionGuard(method);
 492         Py_DECREF(argTuple);
 493         Py_DECREF(method);
 494         if (retval == NULL)
 495             goto error;
 496     }
 497     if (wxPyCBH_findCallback(m_myInst, "OnInit")) {
 498
 499         PyObject* method = m_myInst.GetLastFound();
 500         PyObject* argTuple = PyTuple_New(0);
 501         retval = PyEval_CallObject(method, argTuple);
 502         m_myInst.clearRecursionGuard(method);
 503         Py_DECREF(argTuple);
 504         Py_DECREF(method);
 505         if (retval == NULL)
 506             // Don't PyErr_Print here, let the exception in this case go back
 507             // up to the wx.PyApp.__init__ scope.
 508             goto error;
 509
 510         pyint = PyNumber_Int(retval);
 511         if (! pyint) {
 512             PyErr_SetString(PyExc_TypeError, "OnInit should return a boolean value");
 513             goto error;
 514         }
 515         result = PyInt_AS_LONG(pyint);
 516     }
 517     else {
 518         // Is it okay if there is no OnInit?  Probably so...
 519         result = true;
 520     }
 521
 522     if (! result) {
 523         PyErr_SetString(PyExc_SystemExit, "OnInit returned false, exiting...");
 524     }
 525
 526  error:
 527     Py_XDECREF(retval);
 528     Py_XDECREF(pyint);
 529
 530     wxPyEndBlockThreads(blocked);
 531 };
 532
 533 //---------------------------------------------------------------------
 534 //----------------------------------------------------------------------
 535
 536
 537 #if 0
 538 static char* wxPyCopyCString(const wxChar* src)
 539 {
 540     wxWX2MBbuf buff = (wxWX2MBbuf)wxConvCurrent->cWX2MB(src);
 541     size_t len = strlen(buff);
 542     char*  dest = new char[len+1];
 543     strcpy(dest, buff);
 544     return dest;
 545 }
 546
 547 #if wxUSE_UNICODE
 548 static char* wxPyCopyCString(const char* src)   // we need a char version too
 549 {
 550     size_t len = strlen(src);
 551     char*  dest = new char[len+1];
 552     strcpy(dest, src);
 553     return dest;
 554 }
 555 #endif
 556
 557 static wxChar* wxPyCopyWString(const char *src)
 558 {
 559     //wxMB2WXbuf buff = wxConvCurrent->cMB2WX(src);
 560     wxString str(src, *wxConvCurrent);
 561     return copystring(str);
 562 }
 563
 564 #if wxUSE_UNICODE
 565 static wxChar* wxPyCopyWString(const wxChar *src)
 566 {
 567     return copystring(src);
 568 }
 569 #endif
 570 #endif
 571
 572
 573 inline const char* dropwx(const char* name) {
 574     if (name[0] == 'w' && name[1] == 'x')
 575         return name+2;
 576     else
 577         return name;
 578 }
 579
 580 //----------------------------------------------------------------------
 581
 582 // This function is called when the wx._core_ module is imported to do some
 583 // initial setup.  (Before there is a wxApp object.)  The rest happens in
 584 // wxPyApp::_BootstrapApp
 585 void __wxPyPreStart(PyObject* moduleDict)
 586 {
 587
 588 #ifdef __WXMSW__
 589 //     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF
 590 //                     | _CRTDBG_CHECK_ALWAYS_DF
 591 //                     | _CRTDBG_DELAY_FREE_MEM_DF
 592 //         );
 593 #endif
 594
 595 #ifdef WXP_WITH_THREAD
 596 #if wxPyUSE_GIL_STATE
 597     PyEval_InitThreads();
 598 #else
 599     PyEval_InitThreads();
 600     wxPyTStates = new wxPyThreadStateArray;
 601     wxPyTMutex = new wxMutex;
 602
 603     // Save the current (main) thread state in our array
 604     PyThreadState* tstate = wxPyBeginAllowThreads();
 605     wxPyEndAllowThreads(tstate);
 606 #endif
 607 #endif
 608
 609     // Ensure that the build options in the DLL (or whatever) match this build
 610     wxApp::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, "wxPython");
 611
 612     wxInitAllImageHandlers();
 613 }
 614
 615
 616
 617 void __wxPyCleanup() {
 618     wxPyDoingCleanup = true;
 619     if (wxPyDoCleanup) {
 620         wxPyDoCleanup = false;
 621         wxEntryCleanup();
 622     }
 623 #ifdef WXP_WITH_THREAD
 624 #if !wxPyUSE_GIL_STATE
 625     delete wxPyTMutex;
 626     wxPyTMutex = NULL;
 627     wxPyTStates->Empty();
 628     delete wxPyTStates;
 629     wxPyTStates = NULL;
 630 #endif
 631 #endif
 632 }
 633
 634
 635 // Save a reference to the dictionary of the wx._core module, and inject
 636 // a few more things into it.
 637 PyObject* __wxPySetDictionary(PyObject* /* self */, PyObject* args)
 638 {
 639
 640     if (!PyArg_ParseTuple(args, "O", &wxPython_dict))
 641         return NULL;
 642
 643     if (!PyDict_Check(wxPython_dict)) {
 644         PyErr_SetString(PyExc_TypeError,
 645                         "_wxPySetDictionary must have dictionary object!");
 646         return NULL;
 647     }
 648
 649     if (! wxPyPtrTypeMap)
 650         wxPyPtrTypeMap = PyDict_New();
 651     PyDict_SetItemString(wxPython_dict, "__wxPyPtrTypeMap", wxPyPtrTypeMap);
 652
 653     // Create an exception object to use for wxASSERTions
 654     wxPyAssertionError = PyErr_NewException("wx._core.PyAssertionError",
 655                                             PyExc_AssertionError, NULL);
 656     PyDict_SetItemString(wxPython_dict, "PyAssertionError", wxPyAssertionError);
 657
 658     // Create an exception object to use when the app object hasn't been created yet
 659     wxPyNoAppError = PyErr_NewException("wx._core.PyNoAppError",
 660                                         PyExc_RuntimeError, NULL);
 661     PyDict_SetItemString(wxPython_dict, "PyNoAppError", wxPyNoAppError);
 662
 663
 664
 665 #ifdef __WXMOTIF__
 666 #define wxPlatform "__WXMOTIF__"
 667 #define wxPlatName "wxMotif"
 668 #endif
 669 #ifdef __WXX11__
 670 #define wxPlatform "__WXX11__"
 671 #define wxPlatName "wxX11"
 672 #endif
 673 #ifdef __WXGTK__
 674 #define wxPlatform "__WXGTK__"
 675 #define wxPlatName "wxGTK"
 676 #endif
 677 #ifdef __WXMSW__
 678 #define wxPlatform "__WXMSW__"
 679 #define wxPlatName "wxMSW"
 680 #endif
 681 #ifdef __WXMAC__
 682 #define wxPlatform "__WXMAC__"
 683 #define wxPlatName "wxMac"
 684 #endif
 685
 686 #ifdef __WXDEBUG__
 687     int wxdebug = 1;
 688 #else
 689     int wxdebug = 0;
 690 #endif
 691
 692     // These should be deprecated in favor of the PlatformInfo tuple built below...
 693     PyDict_SetItemString(wxPython_dict, "Platform", PyString_FromString(wxPlatform));
 694     PyDict_SetItemString(wxPython_dict, "USE_UNICODE", PyInt_FromLong(wxUSE_UNICODE));
 695     PyDict_SetItemString(wxPython_dict, "__WXDEBUG__", PyInt_FromLong(wxdebug));
 696
 697     // Make a tuple of strings that gives more info about the platform.
 698     PyObject* PlatInfo = PyList_New(0);
 699     PyObject* obj;
 700
 701 #define _AddInfoString(st) \
 702     obj = PyString_FromString(st); \
 703     PyList_Append(PlatInfo, obj); \
 704     Py_DECREF(obj)
 705
 706     _AddInfoString(wxPlatform);
 707     _AddInfoString(wxPlatName);
 708 #if wxUSE_UNICODE
 709     _AddInfoString("unicode");
 710 #else
 711     _AddInfoString("ansi");
 712 #endif
 713 #ifdef __WXGTK__
 714 #ifdef __WXGTK20__
 715     _AddInfoString("gtk2");
 716 #else
 717     _AddInfoString("gtk1");
 718 #endif
 719 #endif
 720 #ifdef __WXDEBUG__
 721     _AddInfoString("wx-assertions-on");
 722 #else
 723     _AddInfoString("wx-assertions-off");
 724 #endif
 725     _AddInfoString(wxPy_SWIG_VERSION);
 726 #ifdef __WXMAC__
 727     #if wxMAC_USE_CORE_GRAPHICS
 728         _AddInfoString("mac-cg");
 729     #else
 730         _AddInfoString("mac-qd");
 731     #endif
 732     #if wxMAC_USE_NATIVE_TOOLBAR
 733         _AddInfoString("mac-native-tb");
 734     #else
 735         _AddInfoString("mac-no-native-tb");
 736     #endif
 737 #endif
 738
 739 #undef _AddInfoString
 740
 741     PyObject* PlatInfoTuple = PyList_AsTuple(PlatInfo);
 742     Py_DECREF(PlatInfo);
 743     PyDict_SetItemString(wxPython_dict, "PlatformInfo", PlatInfoTuple);
 744
 745     RETURN_NONE();
 746 }
 747
 748
 749
 750 //---------------------------------------------------------------------------
 751
 752 // Check for existence of a wxApp, setting an exception if there isn't one.
 753 // This doesn't need to aquire the GIL because it should only be called from
 754 // an %exception before the lock is released.
 755
 756 bool wxPyCheckForApp() {
 757     if (wxTheApp != NULL)
 758         return true;
 759     else {
 760         PyErr_SetString(wxPyNoAppError, "The wx.App object must be created first!");
 761         return false;
 762     }
 763 }
 764
 765 //---------------------------------------------------------------------------
 766
 767 void wxPyUserData_dtor(wxPyUserData* self) {
 768     if (! wxPyDoingCleanup) {
 769         wxPyBlock_t blocked = wxPyBeginBlockThreads();
 770         Py_DECREF(self->m_obj);
 771         self->m_obj = NULL;
 772         wxPyEndBlockThreads(blocked);
 773     }
 774 }
 775
 776
 777 void wxPyClientData_dtor(wxPyClientData* self) {
 778     if (! wxPyDoingCleanup) {           // Don't do it during cleanup as Python
 779                                         // may have already garbage collected the object...
 780         if (self->m_incRef) {
 781             wxPyBlock_t blocked = wxPyBeginBlockThreads();
 782             Py_DECREF(self->m_obj);
 783             wxPyEndBlockThreads(blocked);
 784         }
 785         self->m_obj = NULL;
 786     }
 787 }
 788
 789
 790
 791 // This is called when an OOR controled object is being destroyed.  Although
 792 // the C++ object is going away there is no way to force the Python object
 793 // (and all references to it) to die too.  This causes problems (crashes) in
 794 // wxPython when a python shadow object attempts to call a C++ method using
 795 // the now bogus pointer... So to try and prevent this we'll do a little black
 796 // magic and change the class of the python instance to a class that will
 797 // raise an exception for any attempt to call methods with it.  See
 798 // _wxPyDeadObject in _core_ex.py for the implementation of this class.
 799 void wxPyOORClientData_dtor(wxPyOORClientData* self) {
 800
 801     static PyObject* deadObjectClass = NULL;
 802
 803     wxPyBlock_t blocked = wxPyBeginBlockThreads();
 804     if (deadObjectClass == NULL) {
 805         deadObjectClass = PyDict_GetItemString(wxPython_dict, "_wxPyDeadObject");
 806         // TODO:  Can not wxASSERT here because inside a wxPyBeginBlock Threads,
 807         // will lead to a deadlock when it tries to aquire the GIL again.
 808         //wxASSERT_MSG(deadObjectClass != NULL, wxT("Can't get _wxPyDeadObject class!"));
 809         Py_INCREF(deadObjectClass);
 810     }
 811
 812
 813     // Only if there is more than one reference to the object and we are
 814     // holding the OOR reference:
 815     if ( !wxPyDoingCleanup && self->m_obj->ob_refcnt > 1 && self->m_incRef) {
 816         // bool isInstance = wxPyInstance_Check(self->m_obj);
 817         // TODO same here
 818         //wxASSERT_MSG(isInstance, wxT("m_obj not an instance!?!?!"));
 819
 820         // Call __del__, if there is one.
 821         PyObject* func = PyObject_GetAttrString(self->m_obj, "__del__");
 822         if (func) {
 823             PyObject* rv = PyObject_CallMethod(self->m_obj, "__del__", NULL);
 824             Py_XDECREF(rv);
 825             Py_DECREF(func);
 826         }
 827         if (PyErr_Occurred())
 828             PyErr_Clear();      // just ignore it for now
 829
 830
 831         PyObject* dict = PyObject_GetAttrString(self->m_obj, "__dict__");
 832         if (dict) {
 833             // Clear the instance's dictionary
 834             PyDict_Clear(dict);
 835
 836             // put the name of the old class into the instance, and then reset the
 837             // class to be the dead class.
 838             PyObject* klass = PyObject_GetAttrString(self->m_obj, "__class__");
 839             PyObject* name =  PyObject_GetAttrString(klass, "__name__");
 840             PyDict_SetItemString(dict, "_name", name);
 841             PyObject_SetAttrString(self->m_obj, "__class__",  deadObjectClass);
 842             //Py_INCREF(deadObjectClass);
 843             Py_DECREF(klass);
 844             Py_DECREF(name);
 845             Py_DECREF(dict);
 846         }
 847     }
 848
 849     // m_obj is DECREF'd in the base class dtor...
 850     wxPyEndBlockThreads(blocked);
 851 }
 852
 853
 854 //---------------------------------------------------------------------------
 855 // Stuff used by OOR to find the right wxPython class type to return and to
 856 // build it.
 857
 858
 859 // The pointer type map is used when the "pointer" type name generated by SWIG
 860 // is not the same as the shadow class name, for example wxPyTreeCtrl
 861 // vs. wxTreeCtrl.  It needs to be referenced in Python as well as from C++,
 862 // so we'll just make it a Python dictionary in the wx module's namespace.
 863 // (See __wxSetDictionary)
 864 void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) {
 865     if (! wxPyPtrTypeMap)
 866         wxPyPtrTypeMap = PyDict_New();
 867     PyDict_SetItemString(wxPyPtrTypeMap,
 868                          (char*)commonName,
 869                          PyString_FromString((char*)ptrName));
 870 }
 871
 872
 873
 874
 875 PyObject*  wxPyMake_wxObject(wxObject* source, bool setThisOwn, bool checkEvtHandler) {
 876     PyObject* target = NULL;
 877     bool      isEvtHandler = false;
 878     bool      isSizer = false;
 879
 880     if (source) {
 881         // If it's derived from wxEvtHandler then there may
 882         // already be a pointer to a Python object that we can use
 883         // in the OOR data.
 884         if (checkEvtHandler && wxIsKindOf(source, wxEvtHandler)) {
 885             isEvtHandler = true;
 886             wxEvtHandler* eh = (wxEvtHandler*)source;
 887             wxPyOORClientData* data = (wxPyOORClientData*)eh->GetClientObject();
 888             if (data) {
 889                 target = data->m_obj;
 890                 if (target)
 891                     Py_INCREF(target);
 892             }
 893         }
 894
 895         // Also check for wxSizer
 896         if (!target && wxIsKindOf(source, wxSizer)) {
 897             isSizer = true;
 898             wxSizer* sz = (wxSizer*)source;
 899             wxPyOORClientData* data = (wxPyOORClientData*)sz->GetClientObject();
 900             if (data) {
 901                 target = data->m_obj;
 902                 if (target)
 903                     Py_INCREF(target);
 904             }
 905         }
 906
 907         if (! target) {
 908             // Otherwise make it the old fashioned way by making a new shadow
 909             // object and putting this pointer in it.  Look up the class
 910             // heirarchy until we find a class name that is located in the
 911             // python module.
 912             const wxClassInfo* info   = source->GetClassInfo();
 913             wxString           name   = info->GetClassName();
 914             bool               exists = wxPyCheckSwigType(name);
 915             while (info && !exists) {
 916                 info = info->GetBaseClass1();
 917                 name = info->GetClassName();
 918                 exists = wxPyCheckSwigType(name);
 919             }
 920             if (info) {
 921                 target = wxPyConstructObject((void*)source, name, setThisOwn);
 922                 if (target && isEvtHandler)
 923                     ((wxEvtHandler*)source)->SetClientObject(new wxPyOORClientData(target));
 924                 if (target && isSizer)
 925                     ((wxSizer*)source)->SetClientObject(new wxPyOORClientData(target));
 926             } else {
 927                 wxString msg(wxT("wxPython class not found for "));
 928                 msg += source->GetClassInfo()->GetClassName();
 929                 PyErr_SetString(PyExc_NameError, msg.mbc_str());
 930                 target = NULL;
 931             }
 932         }
 933     } else {  // source was NULL so return None.
 934         Py_INCREF(Py_None); target = Py_None;
 935     }
 936     return target;
 937 }
 938
 939
 940 PyObject*  wxPyMake_wxSizer(wxSizer* source, bool setThisOwn) {
 941
 942     return wxPyMake_wxObject(source, setThisOwn);
 943 }
 944
 945
 946 //---------------------------------------------------------------------------
 947
 948
 949 #ifdef WXP_WITH_THREAD
 950 #if !wxPyUSE_GIL_STATE
 951
 952 inline
 953 unsigned long wxPyGetCurrentThreadId() {
 954     return wxThread::GetCurrentId();
 955 }
 956
 957 static wxPyThreadState gs_shutdownTState;
 958
 959 static
 960 wxPyThreadState* wxPyGetThreadState() {
 961     if (wxPyTMutex == NULL) // Python is shutting down...
 962         return &gs_shutdownTState;
 963
 964     unsigned long ctid = wxPyGetCurrentThreadId();
 965     wxPyThreadState* tstate = NULL;
 966
 967     wxPyTMutex->Lock();
 968     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 969         wxPyThreadState& info = wxPyTStates->Item(i);
 970         if (info.tid == ctid) {
 971             tstate = &info;
 972             break;
 973         }
 974     }
 975     wxPyTMutex->Unlock();
 976     wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
 977     return tstate;
 978 }
 979
 980
 981 static
 982 void wxPySaveThreadState(PyThreadState* tstate) {
 983     if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
 984         gs_shutdownTState.tstate = tstate;
 985         return;
 986     }
 987     unsigned long ctid = wxPyGetCurrentThreadId();
 988     wxPyTMutex->Lock();
 989     for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
 990         wxPyThreadState& info = wxPyTStates->Item(i);
 991         if (info.tid == ctid) {
 992 #if 0
 993             if (info.tstate != tstate)
 994                 wxLogMessage("*** tstate mismatch!???");
 995 #endif
 996             info.tstate = tstate;    // allow for transient tstates
 997             // Normally it will never change, but apparently COM callbacks
 998             // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
 999             // tstate which will then be garbage the next time we try to use
1000             // it...
1001
1002             wxPyTMutex->Unlock();
1003             return;
1004         }
1005     }
1006     // not found, so add it...
1007     wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
1008     wxPyTMutex->Unlock();
1009 }
1010
1011 #endif
1012 #endif
1013
1014
1015
1016 // Calls from Python to wxWindows code are wrapped in calls to these
1017 // functions:
1018
1019 PyThreadState* wxPyBeginAllowThreads() {
1020 #ifdef WXP_WITH_THREAD
1021     PyThreadState* saved = PyEval_SaveThread();  // Py_BEGIN_ALLOW_THREADS;
1022 #if !wxPyUSE_GIL_STATE
1023     wxPySaveThreadState(saved);
1024 #endif
1025     return saved;
1026 #else
1027     return NULL;
1028 #endif
1029 }
1030
1031 void wxPyEndAllowThreads(PyThreadState* saved) {
1032 #ifdef WXP_WITH_THREAD
1033     PyEval_RestoreThread(saved);   // Py_END_ALLOW_THREADS;
1034 #endif
1035 }
1036
1037
1038
1039 // Calls from wxWindows back to Python code, or even any PyObject
1040 // manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
1041
1042 wxPyBlock_t wxPyBeginBlockThreads() {
1043 #ifdef WXP_WITH_THREAD
1044     if (! Py_IsInitialized()) {
1045         return (wxPyBlock_t)0;
1046     }
1047 #if wxPyUSE_GIL_STATE
1048     PyGILState_STATE state = PyGILState_Ensure();
1049     return state;
1050 #else
1051     PyThreadState *current = _PyThreadState_Current;
1052
1053     // Only block if there wasn't already a tstate, or if the current one is
1054     // not the one we are wanting to change to.  This should prevent deadlock
1055     // if there are nested calls to wxPyBeginBlockThreads
1056     wxPyBlock_t blocked = false;
1057     wxPyThreadState* tstate = wxPyGetThreadState();
1058     if (current != tstate->tstate) {
1059         PyEval_RestoreThread(tstate->tstate);
1060         blocked = true;
1061     }
1062     return blocked;
1063 #endif
1064 #else
1065     return (wxPyBlock_t)0;
1066 #endif
1067 }
1068
1069
1070 void wxPyEndBlockThreads(wxPyBlock_t blocked) {
1071 #ifdef WXP_WITH_THREAD
1072     if (! Py_IsInitialized()) {
1073         return;
1074     }
1075 #if wxPyUSE_GIL_STATE
1076     PyGILState_Release(blocked);
1077 #else
1078     // Only unblock if we blocked in the last call to wxPyBeginBlockThreads.
1079     // The value of blocked passed in needs to be the same as that returned
1080     // from wxPyBeginBlockThreads at the same nesting level.
1081     if ( blocked ) {
1082         PyEval_SaveThread();
1083     }
1084 #endif
1085 #endif
1086 }
1087
1088
1089 //---------------------------------------------------------------------------
1090 // wxPyInputStream and wxPyCBInputStream methods
1091
1092
1093 static PyObject* wxPyGetMethod(PyObject* py, char* name)
1094 {
1095     if (!PyObject_HasAttrString(py, name))
1096         return NULL;
1097     PyObject* o = PyObject_GetAttrString(py, name);
1098     if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
1099         Py_DECREF(o);
1100         return NULL;
1101     }
1102     return o;
1103 }
1104
1105
1106
1107
1108 void wxPyInputStream::close() {
1109     /* do nothing for now */
1110 }
1111
1112 void wxPyInputStream::flush() {
1113     /* do nothing for now */
1114 }
1115
1116 bool wxPyInputStream::eof() {
1117     if (m_wxis)
1118         return m_wxis->Eof();
1119     else
1120         return true;
1121 }
1122
1123 wxPyInputStream::~wxPyInputStream() {
1124     if (m_wxis)
1125         delete m_wxis;
1126 }
1127
1128
1129
1130
1131 PyObject* wxPyInputStream::read(int size) {
1132     PyObject* obj = NULL;
1133     wxMemoryBuffer buf;
1134     const int BUFSIZE = 1024;
1135
1136     // check if we have a real wxInputStream to work with
1137     if (!m_wxis) {
1138         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1139         PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
1140         wxPyEndBlockThreads(blocked);
1141         return NULL;
1142     }
1143
1144     if (size < 0) {
1145         // read while bytes are available on the stream
1146         while ( m_wxis->CanRead() ) {
1147             m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
1148             buf.UngetAppendBuf(m_wxis->LastRead());
1149         }
1150
1151     } else {  // Read only size number of characters
1152         m_wxis->Read(buf.GetWriteBuf(size), size);
1153         buf.UngetWriteBuf(m_wxis->LastRead());
1154     }
1155
1156     // error check
1157     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1158     wxStreamError err = m_wxis->GetLastError();
1159     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1160         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1161     }
1162     else {
1163         // We use only strings for the streams, not unicode
1164         obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
1165     }
1166     wxPyEndBlockThreads(blocked);
1167     return obj;
1168 }
1169
1170
1171 PyObject* wxPyInputStream::readline(int size) {
1172     PyObject* obj = NULL;
1173     wxMemoryBuffer buf;
1174     int i;
1175     char ch;
1176
1177     // check if we have a real wxInputStream to work with
1178     if (!m_wxis) {
1179         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1180         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1181         wxPyEndBlockThreads(blocked);
1182         return NULL;
1183     }
1184
1185     // read until \n or byte limit reached
1186     for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
1187         ch = m_wxis->GetC();
1188         buf.AppendByte(ch);
1189     }
1190
1191     // errorcheck
1192     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1193     wxStreamError err = m_wxis->GetLastError();
1194     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1195         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1196     }
1197     else {
1198         // We use only strings for the streams, not unicode
1199         obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
1200     }
1201     wxPyEndBlockThreads(blocked);
1202     return obj;
1203 }
1204
1205
1206 PyObject* wxPyInputStream::readlines(int sizehint) {
1207     PyObject* pylist;
1208
1209     // check if we have a real wxInputStream to work with
1210     if (!m_wxis) {
1211         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1212         PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
1213         wxPyEndBlockThreads(blocked);
1214         return NULL;
1215     }
1216
1217     // init list
1218     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1219     pylist = PyList_New(0);
1220     wxPyEndBlockThreads(blocked);
1221
1222     if (!pylist) {
1223         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1224         PyErr_NoMemory();
1225         wxPyEndBlockThreads(blocked);
1226         return NULL;
1227     }
1228
1229     // read sizehint bytes or until EOF
1230     int i;
1231     for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
1232         PyObject* s = this->readline();
1233         if (s == NULL) {
1234             wxPyBlock_t blocked = wxPyBeginBlockThreads();
1235             Py_DECREF(pylist);
1236             wxPyEndBlockThreads(blocked);
1237             return NULL;
1238         }
1239         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1240         PyList_Append(pylist, s);
1241         i += PyString_Size(s);
1242         wxPyEndBlockThreads(blocked);
1243     }
1244
1245     // error check
1246     wxStreamError err = m_wxis->GetLastError();
1247     if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
1248         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1249         Py_DECREF(pylist);
1250         PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
1251         wxPyEndBlockThreads(blocked);
1252         return NULL;
1253     }
1254
1255     return pylist;
1256 }
1257
1258
1259 void wxPyInputStream::seek(int offset, int whence) {
1260     if (m_wxis)
1261         m_wxis->SeekI(offset, wxSeekMode(whence));
1262 }
1263
1264 int wxPyInputStream::tell() {
1265     if (m_wxis)
1266         return m_wxis->TellI();
1267     else return 0;
1268 }
1269
1270
1271
1272
1273 wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
1274     : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
1275 {}
1276
1277 wxPyCBInputStream::wxPyCBInputStream(const wxPyCBInputStream& other)
1278 {
1279     m_read  = other.m_read;
1280     m_seek  = other.m_seek;
1281     m_tell  = other.m_tell;
1282     m_block = other.m_block;
1283     Py_INCREF(m_read);
1284     Py_INCREF(m_seek);
1285     Py_INCREF(m_tell);
1286 }
1287
1288
1289 wxPyCBInputStream::~wxPyCBInputStream() {
1290     wxPyBlock_t blocked = wxPyBlock_t_default;
1291     if (m_block) blocked = wxPyBeginBlockThreads();
1292     Py_XDECREF(m_read);
1293     Py_XDECREF(m_seek);
1294     Py_XDECREF(m_tell);
1295     if (m_block) wxPyEndBlockThreads(blocked);
1296 }
1297
1298
1299 wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
1300     wxPyBlock_t blocked = wxPyBlock_t_default;
1301     if (block) blocked = wxPyBeginBlockThreads();
1302
1303     PyObject* read = wxPyGetMethod(py, "read");
1304     PyObject* seek = wxPyGetMethod(py, "seek");
1305     PyObject* tell = wxPyGetMethod(py, "tell");
1306
1307     if (!read) {
1308         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1309         Py_XDECREF(read);
1310         Py_XDECREF(seek);
1311         Py_XDECREF(tell);
1312         if (block) wxPyEndBlockThreads(blocked);
1313         return NULL;
1314     }
1315
1316     if (block) wxPyEndBlockThreads(blocked);
1317     return new wxPyCBInputStream(read, seek, tell, block);
1318 }
1319
1320
1321 wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
1322     return wxPyCBInputStream::create(py, block);
1323 }
1324
1325 wxPyCBInputStream* wxPyCBInputStream_copy(wxPyCBInputStream* other) {
1326     return new wxPyCBInputStream(*other);
1327 }
1328
1329
1330 wxFileOffset wxPyCBInputStream::GetLength() const {
1331     wxPyCBInputStream* self = (wxPyCBInputStream*)this; // cast off const
1332     if (m_seek && m_tell) {
1333         wxFileOffset temp = self->OnSysTell();
1334         wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
1335         self->OnSysSeek(temp, wxFromStart);
1336         return ret;
1337     }
1338     else
1339         return wxInvalidOffset;
1340 }
1341
1342
1343 size_t wxPyCBInputStream::OnSysRead(void *buffer, size_t bufsize) {
1344     if (bufsize == 0)
1345         return 0;
1346
1347     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1348     PyObject* arglist = Py_BuildValue("(i)", bufsize);
1349     PyObject* result = PyEval_CallObject(m_read, arglist);
1350     Py_DECREF(arglist);
1351
1352     size_t o = 0;
1353     if ((result != NULL) && PyString_Check(result)) {
1354         o = PyString_Size(result);
1355         if (o == 0)
1356             m_lasterror = wxSTREAM_EOF;
1357         if (o > bufsize)
1358             o = bufsize;
1359         memcpy((char*)buffer, PyString_AsString(result), o);  // strings only, not unicode...
1360         Py_DECREF(result);
1361
1362     }
1363     else
1364         m_lasterror = wxSTREAM_READ_ERROR;
1365     wxPyEndBlockThreads(blocked);
1366     return o;
1367 }
1368
1369 size_t wxPyCBInputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1370     m_lasterror = wxSTREAM_WRITE_ERROR;
1371     return 0;
1372 }
1373
1374
1375 wxFileOffset wxPyCBInputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
1376     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1377     PyObject* arglist = PyTuple_New(2);
1378
1379     if (sizeof(wxFileOffset) > sizeof(long))
1380         // wxFileOffset is a 64-bit value...
1381         PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
1382     else
1383         PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
1384
1385     PyTuple_SET_ITEM(arglist, 1, PyInt_FromLong(mode));
1386
1387
1388     PyObject* result = PyEval_CallObject(m_seek, arglist);
1389     Py_DECREF(arglist);
1390     Py_XDECREF(result);
1391     wxPyEndBlockThreads(blocked);
1392     return OnSysTell();
1393 }
1394
1395
1396 wxFileOffset wxPyCBInputStream::OnSysTell() const {
1397     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1398     PyObject* arglist = Py_BuildValue("()");
1399     PyObject* result = PyEval_CallObject(m_tell, arglist);
1400     Py_DECREF(arglist);
1401     wxFileOffset o = 0;
1402     if (result != NULL) {
1403         if (PyLong_Check(result))
1404             o = PyLong_AsLongLong(result);
1405         else
1406             o = PyInt_AsLong(result);
1407         Py_DECREF(result);
1408     };
1409     wxPyEndBlockThreads(blocked);
1410     return o;
1411 }
1412
1413 //----------------------------------------------------------------------
1414 // Output stream
1415
1416 wxPyOutputStream::~wxPyOutputStream()
1417 {
1418     if (m_wxos)
1419         delete m_wxos;
1420 }
1421
1422 void wxPyOutputStream::close()
1423 {
1424 }
1425
1426 void wxPyOutputStream::flush()
1427 {
1428 }
1429
1430 bool wxPyOutputStream::eof()
1431 {
1432     return false;
1433 }
1434
1435 void wxPyOutputStream::seek(int offset, int whence)
1436 {
1437     if (m_wxos)
1438         m_wxos->SeekO(offset, wxSeekMode(whence));
1439 }
1440
1441 int wxPyOutputStream::tell()
1442 {
1443     if (m_wxos)
1444         return m_wxos->TellO();
1445     else return 0;
1446 }
1447
1448 void wxPyOutputStream::write(PyObject* data)
1449 {
1450     if (!m_wxos)
1451         return;
1452
1453     // We use only strings for the streams, not unicode
1454     PyObject* str = PyObject_Str(data);
1455     if (! str) {
1456         PyErr_SetString(PyExc_TypeError, "Unable to convert to string");
1457         return;
1458     }
1459     m_wxos->Write(PyString_AS_STRING(str), PyString_GET_SIZE(str));
1460     Py_DECREF(str);
1461 }
1462
1463
1464
1465
1466
1467
1468 wxPyCBOutputStream::wxPyCBOutputStream(PyObject *w, PyObject *s, PyObject *t, bool block)
1469     : wxOutputStream(), m_write(w), m_seek(s), m_tell(t), m_block(block)
1470 {}
1471
1472 wxPyCBOutputStream::wxPyCBOutputStream(const wxPyCBOutputStream& other)
1473 {
1474     m_write = other.m_write;
1475     m_seek  = other.m_seek;
1476     m_tell  = other.m_tell;
1477     m_block = other.m_block;
1478     Py_INCREF(m_write);
1479     Py_INCREF(m_seek);
1480     Py_INCREF(m_tell);
1481 }
1482
1483
1484 wxPyCBOutputStream::~wxPyCBOutputStream() {
1485     wxPyBlock_t blocked = wxPyBlock_t_default;
1486     if (m_block) blocked = wxPyBeginBlockThreads();
1487     Py_XDECREF(m_write);
1488     Py_XDECREF(m_seek);
1489     Py_XDECREF(m_tell);
1490     if (m_block) wxPyEndBlockThreads(blocked);
1491 }
1492
1493
1494 wxPyCBOutputStream* wxPyCBOutputStream::create(PyObject *py, bool block) {
1495     wxPyBlock_t blocked = wxPyBlock_t_default;
1496     if (block) blocked = wxPyBeginBlockThreads();
1497
1498     PyObject* write = wxPyGetMethod(py, "write");
1499     PyObject* seek = wxPyGetMethod(py, "seek");
1500     PyObject* tell = wxPyGetMethod(py, "tell");
1501
1502     if (!write) {
1503         PyErr_SetString(PyExc_TypeError, "Not a file-like object");
1504         Py_XDECREF(write);
1505         Py_XDECREF(seek);
1506         Py_XDECREF(tell);
1507         if (block) wxPyEndBlockThreads(blocked);
1508         return NULL;
1509     }
1510
1511     if (block) wxPyEndBlockThreads(blocked);
1512     return new wxPyCBOutputStream(write, seek, tell, block);
1513 }
1514
1515
1516 wxPyCBOutputStream* wxPyCBOutputStream_create(PyObject *py, bool block) {
1517     return wxPyCBOutputStream::create(py, block);
1518 }
1519
1520 wxPyCBOutputStream* wxPyCBOutputStream_copy(wxPyCBOutputStream* other) {
1521     return new wxPyCBOutputStream(*other);
1522 }
1523
1524
1525 wxFileOffset wxPyCBOutputStream::GetLength() const {
1526     wxPyCBOutputStream* self = (wxPyCBOutputStream*)this; // cast off const
1527     if (m_seek && m_tell) {
1528         wxFileOffset temp = self->OnSysTell();
1529         wxFileOffset ret = self->OnSysSeek(0, wxFromEnd);
1530         self->OnSysSeek(temp, wxFromStart);
1531         return ret;
1532     }
1533     else
1534         return wxInvalidOffset;
1535 }
1536
1537
1538 size_t wxPyCBOutputStream::OnSysRead(void *buffer, size_t bufsize) {
1539     m_lasterror = wxSTREAM_READ_ERROR;
1540     return 0;
1541 }
1542
1543 size_t wxPyCBOutputStream::OnSysWrite(const void *buffer, size_t bufsize) {
1544     if (bufsize == 0)
1545         return 0;
1546
1547     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1548     PyObject* arglist = PyTuple_New(1);
1549     PyTuple_SET_ITEM(arglist, 0, PyString_FromStringAndSize((char*)buffer, bufsize));
1550
1551     PyObject* result = PyEval_CallObject(m_write, arglist);
1552     Py_DECREF(arglist);
1553
1554     if (result != NULL)
1555         Py_DECREF(result);
1556     else
1557         m_lasterror = wxSTREAM_WRITE_ERROR;
1558     wxPyEndBlockThreads(blocked);
1559     return bufsize;
1560 }
1561
1562
1563 wxFileOffset wxPyCBOutputStream::OnSysSeek(wxFileOffset off, wxSeekMode mode) {
1564     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1565     PyObject* arglist = PyTuple_New(2);
1566
1567     if (sizeof(wxFileOffset) > sizeof(long))
1568         // wxFileOffset is a 64-bit value...
1569         PyTuple_SET_ITEM(arglist, 0, PyLong_FromLongLong(off));
1570     else
1571         PyTuple_SET_ITEM(arglist, 0, PyInt_FromLong(off));
1572
1573     PyTuple_SET_ITEM(arglist, 1, PyInt_FromLong(mode));
1574
1575
1576     PyObject* result = PyEval_CallObject(m_seek, arglist);
1577     Py_DECREF(arglist);
1578     Py_XDECREF(result);
1579     wxPyEndBlockThreads(blocked);
1580     return OnSysTell();
1581 }
1582
1583
1584 wxFileOffset wxPyCBOutputStream::OnSysTell() const {
1585     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1586     PyObject* arglist = Py_BuildValue("()");
1587     PyObject* result = PyEval_CallObject(m_tell, arglist);
1588     Py_DECREF(arglist);
1589     wxFileOffset o = 0;
1590     if (result != NULL) {
1591         if (PyLong_Check(result))
1592             o = PyLong_AsLongLong(result);
1593         else
1594             o = PyInt_AsLong(result);
1595         Py_DECREF(result);
1596     };
1597     wxPyEndBlockThreads(blocked);
1598     return o;
1599 }
1600
1601
1602
1603 //----------------------------------------------------------------------
1604
1605 IMPLEMENT_ABSTRACT_CLASS(wxPyCallback, wxObject);
1606
1607 wxPyCallback::wxPyCallback(PyObject* func) {
1608     m_func = func;
1609     Py_INCREF(m_func);
1610 }
1611
1612 wxPyCallback::wxPyCallback(const wxPyCallback& other) {
1613     m_func = other.m_func;
1614     Py_INCREF(m_func);
1615 }
1616
1617 wxPyCallback::~wxPyCallback() {
1618     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1619     Py_DECREF(m_func);
1620     wxPyEndBlockThreads(blocked);
1621 }
1622
1623
1624 #define wxPy_PRECALLINIT     "_preCallInit"
1625 #define wxPy_POSTCALLCLEANUP "_postCallCleanup"
1626
1627 // This function is used for all events destined for Python event handlers.
1628 void wxPyCallback::EventThunker(wxEvent& event) {
1629     wxPyCallback*   cb = (wxPyCallback*)event.m_callbackUserData;
1630     PyObject*       func = cb->m_func;
1631     PyObject*       result;
1632     PyObject*       arg;
1633     PyObject*       tuple;
1634     bool            checkSkip = false;
1635
1636     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1637     wxString className = event.GetClassInfo()->GetClassName();
1638
1639     // If the event is one of these types then pass the original
1640     // event object instead of the one passed to us.
1641     if ( className == wxT("wxPyEvent") ) {
1642         arg =       ((wxPyEvent*)&event)->GetSelf();
1643         checkSkip = ((wxPyEvent*)&event)->GetCloned();
1644     }
1645     else if ( className == wxT("wxPyCommandEvent") ) {
1646         arg =       ((wxPyCommandEvent*)&event)->GetSelf();
1647         checkSkip = ((wxPyCommandEvent*)&event)->GetCloned();
1648     }
1649     else {
1650         arg = wxPyConstructObject((void*)&event, className);
1651     }
1652
1653     if (!arg) {
1654         PyErr_Print();
1655     } else {
1656         // "intern" the pre/post method names to speed up the HasAttr
1657         static PyObject* s_preName  = NULL;
1658         static PyObject* s_postName = NULL;
1659         if (s_preName == NULL) {
1660             s_preName  = PyString_FromString(wxPy_PRECALLINIT);
1661             s_postName = PyString_FromString(wxPy_POSTCALLCLEANUP);
1662         }
1663
1664         // Check if the event object needs some preinitialization
1665         if (PyObject_HasAttr(arg, s_preName)) {
1666             result = PyObject_CallMethodObjArgs(arg, s_preName, arg, NULL);
1667             if ( result ) {
1668                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1669                 PyErr_Clear();       // Just in case...
1670             } else {
1671                 PyErr_Print();
1672             }
1673         }
1674
1675         // Call the event handler, passing the event object
1676         tuple = PyTuple_New(1);
1677         PyTuple_SET_ITEM(tuple, 0, arg);  // steals ref to arg
1678         result = PyEval_CallObject(func, tuple);
1679         if ( result ) {
1680             Py_DECREF(result);   // result is ignored, but we still need to decref it
1681             PyErr_Clear();       // Just in case...
1682         } else {
1683             PyErr_Print();
1684         }
1685
1686         // Check if the event object needs some post cleanup
1687         if (PyObject_HasAttr(arg, s_postName)) {
1688             result = PyObject_CallMethodObjArgs(arg, s_postName, arg, NULL);
1689             if ( result ) {
1690                 Py_DECREF(result);   // result is ignored, but we still need to decref it
1691                 PyErr_Clear();       // Just in case...
1692             } else {
1693                 PyErr_Print();
1694             }
1695         }
1696
1697         if ( checkSkip ) {
1698             // if the event object was one of our special types and
1699             // it had been cloned, then we need to extract the Skipped
1700             // value from the original and set it in the clone.
1701             result = PyObject_CallMethod(arg, "GetSkipped", "");
1702             if ( result ) {
1703                 event.Skip(PyInt_AsLong(result));
1704                 Py_DECREF(result);
1705             } else {
1706                 PyErr_Print();
1707             }
1708         }
1709         Py_DECREF(tuple);
1710     }
1711     wxPyEndBlockThreads(blocked);
1712 }
1713
1714
1715 //----------------------------------------------------------------------
1716
1717 wxPyCallbackHelper::wxPyCallbackHelper(const wxPyCallbackHelper& other) {
1718       m_lastFound = NULL;
1719       m_self = other.m_self;
1720       m_class = other.m_class;
1721       if (m_self) {
1722           Py_INCREF(m_self);
1723           Py_INCREF(m_class);
1724       }
1725 }
1726
1727
1728 void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) {
1729     m_self = self;
1730     m_class = klass;
1731     m_incRef = incref;
1732     if (incref) {
1733         Py_INCREF(m_self);
1734         Py_INCREF(m_class);
1735     }
1736 }
1737
1738
1739 #if PYTHON_API_VERSION >= 1011
1740
1741 // Prior to Python 2.2 PyMethod_GetClass returned the class object
1742 // in which the method was defined.  Starting with 2.2 it returns
1743 // "class that asked for the method" which seems totally bogus to me
1744 // but apprently it fixes some obscure problem waiting to happen in
1745 // Python.  Since the API was not documented Guido and the gang felt
1746 // safe in changing it.  Needless to say that totally screwed up the
1747 // logic below in wxPyCallbackHelper::findCallback, hence this icky
1748 // code to find the class where the method is actually defined...
1749
1750 static
1751 PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name)
1752 {
1753     int i, n;
1754
1755     if (PyType_Check(klass)) {      // new style classes
1756         // This code is borrowed/adapted from _PyType_Lookup in typeobject.c
1757         PyTypeObject* type = (PyTypeObject*)klass;
1758         PyObject *mro, *res, *base, *dict;
1759         /* Look in tp_dict of types in MRO */
1760         mro = type->tp_mro;
1761         assert(PyTuple_Check(mro));
1762         n = PyTuple_GET_SIZE(mro);
1763         for (i = 0; i < n; i++) {
1764             base = PyTuple_GET_ITEM(mro, i);
1765             if (PyClass_Check(base))
1766                 dict = ((PyClassObject *)base)->cl_dict;
1767             else {
1768                 assert(PyType_Check(base));
1769                 dict = ((PyTypeObject *)base)->tp_dict;
1770             }
1771             assert(dict && PyDict_Check(dict));
1772             res = PyDict_GetItem(dict, name);
1773             if (res != NULL)
1774                 return base;
1775         }
1776         return NULL;
1777     }
1778
1779     else if (PyClass_Check(klass)) { // old style classes
1780         // This code is borrowed/adapted from class_lookup in classobject.c
1781         PyClassObject* cp = (PyClassObject*)klass;
1782         PyObject *value = PyDict_GetItem(cp->cl_dict, name);
1783         if (value != NULL) {
1784             return (PyObject*)cp;
1785         }
1786         n = PyTuple_Size(cp->cl_bases);
1787         for (i = 0; i < n; i++) {
1788             PyObject* base = PyTuple_GetItem(cp->cl_bases, i);
1789             PyObject *v = PyFindClassWithAttr(base, name);
1790             if (v != NULL)
1791                 return v;
1792         }
1793         return NULL;
1794     }
1795     return NULL;
1796 }
1797 #endif
1798
1799
1800 static
1801 PyObject* PyMethod_GetDefiningClass(PyObject* method, PyObject* nameo)
1802 {
1803     PyObject* mgc = PyMethod_GET_CLASS(method);
1804
1805 #if PYTHON_API_VERSION <= 1010    // prior to Python 2.2, the easy way
1806     return mgc;
1807 #else                             // 2.2 and after, the hard way...
1808     return PyFindClassWithAttr(mgc, nameo);
1809 #endif
1810 }
1811
1812
1813
1814 // To avoid recursion when an overridden virtual method wants to call the base
1815 // class version, temporarily set an attribute in the instance with the same
1816 // name as the method.  Then the PyObject_GetAttr in the next findCallback
1817 // will return this attribute and the PyMethod_Check will fail.
1818
1819 void wxPyCallbackHelper::setRecursionGuard(PyObject* method) const
1820 {
1821     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1822     PyObject_SetAttr(m_self, func->func_name, Py_None);
1823 }
1824
1825 void wxPyCallbackHelper::clearRecursionGuard(PyObject* method) const
1826 {
1827     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1828     if (PyObject_HasAttr(m_self, func->func_name)) {
1829         PyObject_DelAttr(m_self, func->func_name);
1830     }
1831 }
1832
1833 // bool wxPyCallbackHelper::hasRecursionGuard(PyObject* method) const
1834 // {
1835 //     PyFunctionObject* func = (PyFunctionObject*)PyMethod_Function(method);
1836 //     if (PyObject_HasAttr(m_self, func->func_name)) {
1837 //         PyObject* attr = PyObject_GetAttr(m_self, func->func_name);
1838 //         bool retval = (attr == Py_None);
1839 //         Py_DECREF(attr);
1840 //         return retval;
1841 //     }
1842 //     return false;
1843 // }
1844
1845
1846 bool wxPyCallbackHelper::findCallback(const char* name, bool setGuard) const {
1847     wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const
1848     PyObject *method, *klass;
1849     PyObject* nameo = PyString_FromString(name);
1850     self->m_lastFound = NULL;
1851
1852     // If the object (m_self) has an attibute of the given name...
1853     if (m_self && PyObject_HasAttr(m_self, nameo)) {
1854         method = PyObject_GetAttr(m_self, nameo);
1855
1856         // ...and if that attribute is a method, and if that method's class is
1857         // not from the registered class or a base class...
1858         if (PyMethod_Check(method) &&
1859             (klass = PyMethod_GetDefiningClass(method, nameo)) != NULL &&
1860             (klass != m_class) &&
1861             PyObject_IsSubclass(klass, m_class)) {
1862
1863             // ...then we'll save a pointer to the method so callCallback can
1864             // call it.  But first, set a recursion guard in case the
1865             // overridden method wants to call the base class version.
1866             if (setGuard)
1867                 setRecursionGuard(method);
1868             self->m_lastFound = method;
1869         }
1870         else {
1871             Py_DECREF(method);
1872         }
1873     }
1874
1875     Py_DECREF(nameo);
1876     return m_lastFound != NULL;
1877 }
1878
1879
1880 int wxPyCallbackHelper::callCallback(PyObject* argTuple) const {
1881     PyObject*   result;
1882     int         retval = false;
1883
1884     result = callCallbackObj(argTuple);
1885     if (result) {                       // Assumes an integer return type...
1886         retval = PyInt_AsLong(result);
1887         Py_DECREF(result);
1888         PyErr_Clear();                  // forget about it if it's not...
1889     }
1890     return retval;
1891 }
1892
1893 // Invoke the Python callable object, returning the raw PyObject return
1894 // value.  Caller should DECREF the return value and also manage the GIL.
1895 PyObject* wxPyCallbackHelper::callCallbackObj(PyObject* argTuple) const {
1896     PyObject* result;
1897
1898     // Save a copy of the pointer in case the callback generates another
1899     // callback.  In that case m_lastFound will have a different value when
1900     // it gets back here...
1901     PyObject* method = m_lastFound;
1902
1903     result = PyEval_CallObject(method, argTuple);
1904     clearRecursionGuard(method);
1905
1906     Py_DECREF(argTuple);
1907     Py_DECREF(method);
1908     if (!result) {
1909         PyErr_Print();
1910     }
1911     return result;
1912 }
1913
1914
1915 void wxPyCBH_setCallbackInfo(wxPyCallbackHelper& cbh, PyObject* self, PyObject* klass, int incref) {
1916     cbh.setSelf(self, klass, incref);
1917 }
1918
1919 bool wxPyCBH_findCallback(const wxPyCallbackHelper& cbh, const char* name, bool setGuard) {
1920     return cbh.findCallback(name, setGuard);
1921 }
1922
1923 int  wxPyCBH_callCallback(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1924     return cbh.callCallback(argTuple);
1925 }
1926
1927 PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTuple) {
1928     return cbh.callCallbackObj(argTuple);
1929 }
1930
1931
1932 void wxPyCBH_delete(wxPyCallbackHelper* cbh) {
1933     if (cbh->m_incRef && Py_IsInitialized()) {
1934         wxPyBlock_t blocked = wxPyBeginBlockThreads();
1935         Py_XDECREF(cbh->m_self);
1936         Py_XDECREF(cbh->m_class);
1937         wxPyEndBlockThreads(blocked);
1938     }
1939 }
1940
1941 //---------------------------------------------------------------------------
1942 //---------------------------------------------------------------------------
1943 // These event classes can be derived from in Python and passed through the event
1944 // system without losing anything.  They do this by keeping a reference to
1945 // themselves and some special case handling in wxPyCallback::EventThunker.
1946
1947
1948 wxPyEvtSelfRef::wxPyEvtSelfRef() {
1949     //m_self = Py_None;         // **** We don't do normal ref counting to prevent
1950     //Py_INCREF(m_self);        //      circular loops...
1951     m_cloned = false;
1952 }
1953
1954 wxPyEvtSelfRef::~wxPyEvtSelfRef() {
1955     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1956     if (m_cloned)
1957         Py_DECREF(m_self);
1958     wxPyEndBlockThreads(blocked);
1959 }
1960
1961 void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) {
1962     wxPyBlock_t blocked = wxPyBeginBlockThreads();
1963     if (m_cloned)
1964         Py_DECREF(m_self);
1965     m_self = self;
1966     if (clone) {
1967         Py_INCREF(m_self);
1968         m_cloned = true;
1969     }
1970     wxPyEndBlockThreads(blocked);
1971 }
1972
1973 PyObject* wxPyEvtSelfRef::GetSelf() const {
1974     Py_INCREF(m_self);
1975     return m_self;
1976 }
1977
1978
1979 IMPLEMENT_ABSTRACT_CLASS(wxPyEvent, wxEvent);
1980 IMPLEMENT_ABSTRACT_CLASS(wxPyCommandEvent, wxCommandEvent);
1981
1982
1983 wxPyEvent::wxPyEvent(int winid, wxEventType commandType)
1984     : wxEvent(winid, commandType) {
1985 }
1986
1987
1988 wxPyEvent::wxPyEvent(const wxPyEvent& evt)
1989     : wxEvent(evt)
1990 {
1991     SetSelf(evt.m_self, true);
1992 }
1993
1994
1995 wxPyEvent::~wxPyEvent() {
1996 }
1997
1998
1999 wxPyCommandEvent::wxPyCommandEvent(wxEventType commandType, int id)
2000     : wxCommandEvent(commandType, id) {
2001 }
2002
2003
2004 wxPyCommandEvent::wxPyCommandEvent(const wxPyCommandEvent& evt)
2005     : wxCommandEvent(evt)
2006 {
2007     SetSelf(evt.m_self, true);
2008 }
2009
2010
2011 wxPyCommandEvent::~wxPyCommandEvent() {
2012 }
2013
2014
2015
2016
2017
2018 //---------------------------------------------------------------------------
2019 //---------------------------------------------------------------------------
2020 // Convert a wxList to a Python List, only works for lists of wxObjects
2021
2022 PyObject* wxPy_ConvertList(wxListBase* listbase) {
2023     wxList*     list = (wxList*)listbase;  // this is probably bad...
2024     PyObject*   pyList;
2025     PyObject*   pyObj;
2026     wxObject*   wxObj;
2027     wxNode*     node = list->GetFirst();
2028
2029     wxPyBlock_t blocked = wxPyBeginBlockThreads();
2030     pyList = PyList_New(0);
2031     while (node) {
2032         wxObj = node->GetData();
2033         pyObj = wxPyMake_wxObject(wxObj,false);
2034         PyList_Append(pyList, pyObj);
2035         Py_DECREF(pyObj);  // the Append also does an INCREF, that's one more than we need.
2036         node = node->GetNext();
2037     }
2038     wxPyEndBlockThreads(blocked);
2039     return pyList;
2040 }
2041
2042 //----------------------------------------------------------------------
2043
2044 long wxPyGetWinHandle(wxWindow* win) {
2045
2046 #ifdef __WXMSW__
2047     return (long)win->GetHandle();
2048 #endif
2049
2050 #if defined(__WXGTK__) || defined(__WXX11)
2051     return (long)GetXWindow(win);
2052 #endif
2053
2054 #ifdef __WXMAC__
2055     //return (long)MAC_WXHWND(win->MacGetTopLevelWindowRef());
2056     return (long)win->GetHandle();
2057 #endif
2058
2059     return 0;
2060 }
2061
2062 //----------------------------------------------------------------------
2063 // Some helper functions for typemaps in my_typemaps.i, so they won't be
2064 // included in every file over and over again...
2065
2066 wxString* wxString_in_helper(PyObject* source) {
2067     wxString* target = NULL;
2068
2069     if (!PyString_Check(source) && !PyUnicode_Check(source)) {
2070         PyErr_SetString(PyExc_TypeError, "String or Unicode type required");
2071         return NULL;
2072     }
2073 #if wxUSE_UNICODE
2074     PyObject* uni = source;
2075     if (PyString_Check(source)) {
2076         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
2077         if (PyErr_Occurred()) return NULL;
2078     }
2079     target = new wxString();
2080     size_t len = PyUnicode_GET_SIZE(uni);
2081     if (len) {
2082         PyUnicode_AsWideChar((PyUnicodeObject*)uni, wxStringBuffer(*target, len), len);
2083     }
2084
2085     if (PyString_Check(source))
2086         Py_DECREF(uni);
2087 #else
2088     // Convert to a string object if it isn't already, then to wxString
2089     PyObject* str = source;
2090     if (PyUnicode_Check(source)) {
2091         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
2092         if (PyErr_Occurred()) return NULL;
2093     }
2094     else if (!PyString_Check(source)) {
2095         str = PyObject_Str(source);
2096         if (PyErr_Occurred()) return NULL;
2097     }
2098     char* tmpPtr; Py_ssize_t tmpSize;
2099     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
2100     target = new wxString(tmpPtr, tmpSize);
2101
2102     if (!PyString_Check(source))
2103         Py_DECREF(str);
2104 #endif // wxUSE_UNICODE
2105
2106     return target;
2107 }
2108
2109
2110 // Similar to above except doesn't use "new" and doesn't set an exception
2111 wxString Py2wxString(PyObject* source)
2112 {
2113     wxString target;
2114
2115 #if wxUSE_UNICODE
2116     // Convert to a unicode object, if not already, then to a wxString
2117     PyObject* uni = source;
2118     if (!PyUnicode_Check(source)) {
2119         uni = PyUnicode_FromEncodedObject(source, wxPyDefaultEncoding, "strict");
2120         if (PyErr_Occurred()) return wxEmptyString;  // TODO:  should we PyErr_Clear?
2121     }
2122     size_t len = PyUnicode_GET_SIZE(uni);
2123     if (len) {
2124         PyUnicode_AsWideChar((PyUnicodeObject*)uni, wxStringBuffer(target, len), len);
2125     }
2126
2127     if (!PyUnicode_Check(source))
2128         Py_DECREF(uni);
2129 #else
2130     // Convert to a string object if it isn't already, then to wxString
2131     PyObject* str = source;
2132     if (PyUnicode_Check(source)) {
2133         str = PyUnicode_AsEncodedString(source, wxPyDefaultEncoding, "strict");
2134         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
2135     }
2136     else if (!PyString_Check(source)) {
2137         str = PyObject_Str(source);
2138         if (PyErr_Occurred()) return wxEmptyString;    // TODO:  should we PyErr_Clear?
2139     }
2140     char* tmpPtr; Py_ssize_t tmpSize;
2141     PyString_AsStringAndSize(str, &tmpPtr, &tmpSize);
2142     target = wxString(tmpPtr, tmpSize);
2143
2144     if (!PyString_Check(source))
2145         Py_DECREF(str);
2146 #endif // wxUSE_UNICODE
2147
2148     return target;
2149 }
2150
2151
2152 // Make either a Python String or Unicode object, depending on build mode
2153 PyObject* wx2PyString(const wxString& src)
2154 {
2155     PyObject* str;
2156 #if wxUSE_UNICODE
2157     str = PyUnicode_FromWideChar(src.c_str(), src.Len());
2158 #else
2159     str = PyString_FromStringAndSize(src.c_str(), src.Len());
2160 #endif
2161     return str;
2162 }
2163
2164
2165
2166 void wxSetDefaultPyEncoding(const char* encoding)
2167 {
2168     strncpy(wxPyDefaultEncoding, encoding, DEFAULTENCODING_SIZE);
2169 }
2170
2171 const char* wxGetDefaultPyEncoding()
2172 {
2173     return wxPyDefaultEncoding;
2174 }
2175
2176 //----------------------------------------------------------------------
2177
2178
2179 byte* byte_LIST_helper(PyObject* source) {
2180     if (!PyList_Check(source)) {
2181         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2182         return NULL;
2183     }
2184     int count = PyList_Size(source);
2185     byte* temp = new byte[count];
2186     if (! temp) {
2187         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2188         return NULL;
2189     }
2190     for (int x=0; x<count; x++) {
2191         PyObject* o = PyList_GetItem(source, x);
2192         if (! PyInt_Check(o)) {
2193             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2194             return NULL;
2195         }
2196         temp[x] = (byte)PyInt_AsLong(o);
2197     }
2198     return temp;
2199 }
2200
2201
2202 int* int_LIST_helper(PyObject* source) {
2203     if (!PyList_Check(source)) {
2204         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2205         return NULL;
2206     }
2207     int count = PyList_Size(source);
2208     int* temp = new int[count];
2209     if (! temp) {
2210         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2211         return NULL;
2212     }
2213     for (int x=0; x<count; x++) {
2214         PyObject* o = PyList_GetItem(source, x);
2215         if (! PyInt_Check(o)) {
2216             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2217             return NULL;
2218         }
2219         temp[x] = PyInt_AsLong(o);
2220     }
2221     return temp;
2222 }
2223
2224
2225 long* long_LIST_helper(PyObject* source) {
2226     if (!PyList_Check(source)) {
2227         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2228         return NULL;
2229     }
2230     int count = PyList_Size(source);
2231     long* temp = new long[count];
2232     if (! temp) {
2233         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2234         return NULL;
2235     }
2236     for (int x=0; x<count; x++) {
2237         PyObject* o = PyList_GetItem(source, x);
2238         if (! PyInt_Check(o)) {
2239             PyErr_SetString(PyExc_TypeError, "Expected a list of integers.");
2240             return NULL;
2241         }
2242         temp[x] = PyInt_AsLong(o);
2243     }
2244     return temp;
2245 }
2246
2247
2248 char** string_LIST_helper(PyObject* source) {
2249     if (!PyList_Check(source)) {
2250         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2251         return NULL;
2252     }
2253     int count = PyList_Size(source);
2254     char** temp = new char*[count];
2255     if (! temp) {
2256         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2257         return NULL;
2258     }
2259     for (int x=0; x<count; x++) {
2260         PyObject* o = PyList_GetItem(source, x);
2261         if (! PyString_Check(o)) {
2262             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2263             return NULL;
2264         }
2265         temp[x] = PyString_AsString(o);
2266     }
2267     return temp;
2268 }
2269
2270 //---------------------------------------------------------------------------
2271 // NOTE: The following functions could really use some refactoring using
2272 // templates to make things somewhat simpler...
2273
2274 inline bool wxPointFromObjects(PyObject* o1, PyObject* o2, wxPoint* point)
2275 {
2276     // get the x value
2277     if (PyInt_Check(o1))
2278         point->x = (int)PyInt_AS_LONG(o1);
2279     else if (PyFloat_Check(o1))
2280         point->x = (int)PyFloat_AS_DOUBLE(o1);
2281     else if (PyNumber_Check(o1))
2282         point->x = (int)PyInt_AsLong(o1);
2283     else
2284         return false;
2285
2286     // get the y value
2287     if (PyInt_Check(o2))
2288         point->y = (int)PyInt_AS_LONG(o2);
2289     else if (PyFloat_Check(o2))
2290         point->y = (int)PyFloat_AS_DOUBLE(o2);
2291     else if (PyNumber_Check(o2))
2292         point->y = (int)PyInt_AsLong(o2);
2293     else
2294         return false;
2295
2296     return true;
2297
2298 // NOTE: This function used to have this code in it, but I don't know why it
2299 // is a problem nor what havok it will cause, so removing for now...
2300 //     if (wxPySwigInstance_Check(o1) || wxPySwigInstance_Check(o2)) {
2301 //         // Disallow instances because they can cause havok
2302 //         return false;
2303 //     }
2304 }
2305
2306
2307 inline bool wxPoint2DFromObjects(PyObject* o1, PyObject* o2, wxPoint2D* point)
2308 {
2309     // get the x value
2310     if (PyInt_Check(o1))
2311         point->m_x = (double)PyInt_AS_LONG(o1);
2312     else if (PyFloat_Check(o1))
2313         point->m_x = (double)PyFloat_AS_DOUBLE(o1);
2314     else if (PyNumber_Check(o1))
2315         point->m_x = (double)PyFloat_AsDouble(o1);
2316     else
2317         return false;
2318
2319     // get the y value
2320     if (PyInt_Check(o2))
2321         point->m_y = (double)PyInt_AS_LONG(o2);
2322     else if (PyFloat_Check(o2))
2323         point->m_y = (double)PyFloat_AS_DOUBLE(o2);
2324     else if (PyNumber_Check(o2))
2325         point->m_y = (double)PyFloat_AsDouble(o2);
2326     else
2327         return false;
2328
2329     return true;
2330 }
2331
2332
2333
2334 wxPoint* wxPoint_LIST_helper(PyObject* source, int *count)
2335 {
2336     int idx;
2337     wxPoint* temp;
2338     PyObject *o, *o1, *o2;
2339     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2340
2341     if (!PySequence_Check(source)) {
2342         goto error0;
2343     }
2344
2345     // The length of the sequence is returned in count.
2346     *count = PySequence_Length(source);
2347     if (*count < 0) {
2348         goto error0;
2349     }
2350
2351     temp = new wxPoint[*count];
2352     if (!temp) {
2353         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2354         return NULL;
2355     }
2356     for (idx=0; idx<*count; idx++) {
2357         // Get an item: try fast way first.
2358         if (isFast) {
2359             o = PySequence_Fast_GET_ITEM(source, idx);
2360         }
2361         else {
2362             o = PySequence_GetItem(source, idx);
2363             if (o == NULL) {
2364                 goto error1;
2365             }
2366         }
2367
2368         // Convert o to wxPoint.
2369         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2370             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2371             o1 = PySequence_Fast_GET_ITEM(o, 0);
2372             o2 = PySequence_Fast_GET_ITEM(o, 1);
2373             if (!wxPointFromObjects(o1, o2, &temp[idx])) {
2374                 goto error2;
2375             }
2376         }
2377         else if (wxPySwigInstance_Check(o)) {
2378             wxPoint* pt;
2379             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint"))) {
2380                 goto error2;
2381             }
2382             temp[idx] = *pt;
2383         }
2384         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2385             o1 = PySequence_GetItem(o, 0);
2386             o2 = PySequence_GetItem(o, 1);
2387             if (!wxPointFromObjects(o1, o2, &temp[idx])) {
2388                 goto error3;
2389             }
2390             Py_DECREF(o1);
2391             Py_DECREF(o2);
2392         }
2393         else {
2394             goto error2;
2395         }
2396         // Clean up.
2397         if (!isFast)
2398             Py_DECREF(o);
2399     }
2400     return temp;
2401
2402 error3:
2403     Py_DECREF(o1);
2404     Py_DECREF(o2);
2405 error2:
2406     if (!isFast)
2407         Py_DECREF(o);
2408 error1:
2409     delete [] temp;
2410 error0:
2411     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoints.");
2412     return NULL;
2413 }
2414
2415
2416
2417 wxPoint2D* wxPoint2D_LIST_helper(PyObject* source, size_t *count)
2418 {
2419     size_t idx;
2420     wxPoint2D* temp;
2421     PyObject *o, *o1, *o2;
2422     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2423
2424     if (!PySequence_Check(source)) {
2425         goto error0;
2426     }
2427
2428     // The length of the sequence is returned in count.
2429     *count = PySequence_Length(source);
2430     if (*count < 0) {
2431         goto error0;
2432     }
2433
2434     temp = new wxPoint2D[*count];
2435     if (!temp) {
2436         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2437         return NULL;
2438     }
2439     for (idx=0; idx<*count; idx++) {
2440         // Get an item: try fast way first.
2441         if (isFast) {
2442             o = PySequence_Fast_GET_ITEM(source, idx);
2443         }
2444         else {
2445             o = PySequence_GetItem(source, idx);
2446             if (o == NULL) {
2447                 goto error1;
2448             }
2449         }
2450
2451         // Convert o to wxPoint.
2452         if ((PyTuple_Check(o) && PyTuple_GET_SIZE(o) == 2) ||
2453             (PyList_Check(o) && PyList_GET_SIZE(o) == 2)) {
2454             o1 = PySequence_Fast_GET_ITEM(o, 0);
2455             o2 = PySequence_Fast_GET_ITEM(o, 1);
2456             if (!wxPoint2DFromObjects(o1, o2, &temp[idx])) {
2457                 goto error2;
2458             }
2459         }
2460         else if (wxPySwigInstance_Check(o)) {
2461             wxPoint2D* pt;
2462             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPoint2D"))) {
2463                 goto error2;
2464             }
2465             temp[idx] = *pt;
2466         }
2467         else if (PySequence_Check(o) && PySequence_Length(o) == 2) {
2468             o1 = PySequence_GetItem(o, 0);
2469             o2 = PySequence_GetItem(o, 1);
2470             if (!wxPoint2DFromObjects(o1, o2, &temp[idx])) {
2471                 goto error3;
2472             }
2473             Py_DECREF(o1);
2474             Py_DECREF(o2);
2475         }
2476         else {
2477             goto error2;
2478         }
2479         // Clean up.
2480         if (!isFast)
2481             Py_DECREF(o);
2482     }
2483     return temp;
2484
2485 error3:
2486     Py_DECREF(o1);
2487     Py_DECREF(o2);
2488 error2:
2489     if (!isFast)
2490         Py_DECREF(o);
2491 error1:
2492     delete [] temp;
2493 error0:
2494     PyErr_SetString(PyExc_TypeError, "Expected a sequence of length-2 sequences or wxPoint2Ds.");
2495     return NULL;
2496 }
2497
2498 //---------------------------------------------------------------------------
2499
2500
2501 wxBitmap** wxBitmap_LIST_helper(PyObject* source) {
2502     if (!PyList_Check(source)) {
2503         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2504         return NULL;
2505     }
2506     int count = PyList_Size(source);
2507     wxBitmap** temp = new wxBitmap*[count];
2508     if (! temp) {
2509         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2510         return NULL;
2511     }
2512     for (int x=0; x<count; x++) {
2513         PyObject* o = PyList_GetItem(source, x);
2514         if (wxPySwigInstance_Check(o)) {
2515             wxBitmap*    pt;
2516             if (! wxPyConvertSwigPtr(o, (void **) &pt, wxT("wxBitmap"))) {
2517                 PyErr_SetString(PyExc_TypeError,"Expected wxBitmap.");
2518                 return NULL;
2519             }
2520             temp[x] = pt;
2521         }
2522         else {
2523             PyErr_SetString(PyExc_TypeError, "Expected a list of wxBitmaps.");
2524             return NULL;
2525         }
2526     }
2527     return temp;
2528 }
2529
2530
2531
2532 wxString* wxString_LIST_helper(PyObject* source) {
2533     if (!PyList_Check(source)) {
2534         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2535         return NULL;
2536     }
2537     int count = PyList_Size(source);
2538     wxString* temp = new wxString[count];
2539     if (! temp) {
2540         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2541         return NULL;
2542     }
2543     for (int x=0; x<count; x++) {
2544         PyObject* o = PyList_GetItem(source, x);
2545 #if PYTHON_API_VERSION >= 1009
2546         if (! PyString_Check(o) && ! PyUnicode_Check(o)) {
2547             PyErr_SetString(PyExc_TypeError, "Expected a list of string or unicode objects.");
2548             return NULL;
2549         }
2550 #else
2551         if (! PyString_Check(o)) {
2552             PyErr_SetString(PyExc_TypeError, "Expected a list of strings.");
2553             return NULL;
2554         }
2555 #endif
2556
2557         wxString* pStr = wxString_in_helper(o);
2558         temp[x] = *pStr;
2559         delete pStr;
2560     }
2561     return temp;
2562 }
2563
2564
2565 wxAcceleratorEntry* wxAcceleratorEntry_LIST_helper(PyObject* source) {
2566     if (!PyList_Check(source)) {
2567         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2568         return NULL;
2569     }
2570     int count                = PyList_Size(source);
2571     wxAcceleratorEntry* temp = new wxAcceleratorEntry[count];
2572     if (! temp) {
2573         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2574         return NULL;
2575     }
2576     for (int x=0; x<count; x++) {
2577         PyObject* o = PyList_GetItem(source, x);
2578         if (wxPySwigInstance_Check(o)) {
2579             wxAcceleratorEntry* ae;
2580             if (! wxPyConvertSwigPtr(o, (void **) &ae, wxT("wxAcceleratorEntry"))) {
2581                 PyErr_SetString(PyExc_TypeError,"Expected wxAcceleratorEntry.");
2582                 return NULL;
2583             }
2584             temp[x] = *ae;
2585         }
2586         else if (PyTuple_Check(o)) {
2587             PyObject* o1 = PyTuple_GetItem(o, 0);
2588             PyObject* o2 = PyTuple_GetItem(o, 1);
2589             PyObject* o3 = PyTuple_GetItem(o, 2);
2590             temp[x].Set(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2591         }
2592         else {
2593             PyErr_SetString(PyExc_TypeError, "Expected a list of 3-tuples or wxAcceleratorEntry objects.");
2594             return NULL;
2595         }
2596     }
2597     return temp;
2598 }
2599
2600
2601 wxPen** wxPen_LIST_helper(PyObject* source) {
2602     if (!PyList_Check(source)) {
2603         PyErr_SetString(PyExc_TypeError, "Expected a list object.");
2604         return NULL;
2605     }
2606     int count = PyList_Size(source);
2607     wxPen** temp = new wxPen*[count];
2608     if (!temp) {
2609         PyErr_SetString(PyExc_MemoryError, "Unable to allocate temporary array");
2610         return NULL;
2611     }
2612     for (int x=0; x<count; x++) {
2613         PyObject* o = PyList_GetItem(source, x);
2614         if (wxPySwigInstance_Check(o)) {
2615             wxPen*  pt;
2616             if (! wxPyConvertSwigPtr(o, (void **)&pt, wxT("wxPen"))) {
2617                 delete temp;
2618                 PyErr_SetString(PyExc_TypeError,"Expected wxPen.");
2619                 return NULL;
2620             }
2621             temp[x] = pt;
2622         }
2623         else {
2624             delete temp;
2625             PyErr_SetString(PyExc_TypeError, "Expected a list of wxPens.");
2626             return NULL;
2627         }
2628     }
2629     return temp;
2630 }
2631
2632
2633 bool wxPy2int_seq_helper(PyObject* source, int* i1, int* i2) {
2634     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2635     PyObject *o1, *o2;
2636
2637     if (!PySequence_Check(source) || PySequence_Length(source) != 2)
2638         return false;
2639
2640     if (isFast) {
2641         o1 = PySequence_Fast_GET_ITEM(source, 0);
2642         o2 = PySequence_Fast_GET_ITEM(source, 1);
2643     }
2644     else {
2645         o1 = PySequence_GetItem(source, 0);
2646         o2 = PySequence_GetItem(source, 1);
2647     }
2648
2649     *i1 = PyInt_AsLong(o1);
2650     *i2 = PyInt_AsLong(o2);
2651
2652     if (! isFast) {
2653         Py_DECREF(o1);
2654         Py_DECREF(o2);
2655     }
2656     return true;
2657 }
2658
2659
2660 bool wxPy4int_seq_helper(PyObject* source, int* i1, int* i2, int* i3, int* i4) {
2661     bool isFast = PyList_Check(source) || PyTuple_Check(source);
2662     PyObject *o1, *o2, *o3, *o4;
2663
2664     if (!PySequence_Check(source) || PySequence_Length(source) != 4)
2665         return false;
2666
2667     if (isFast) {
2668         o1 = PySequence_Fast_GET_ITEM(source, 0);
2669         o2 = PySequence_Fast_GET_ITEM(source, 1);
2670         o3 = PySequence_Fast_GET_ITEM(source, 2);
2671         o4 = PySequence_Fast_GET_ITEM(source, 3);
2672     }
2673     else {
2674         o1 = PySequence_GetItem(source, 0);
2675         o2 = PySequence_GetItem(source, 1);
2676         o3 = PySequence_GetItem(source, 2);
2677         o4 = PySequence_GetItem(source, 3);
2678     }
2679
2680     *i1 = PyInt_AsLong(o1);
2681     *i2 = PyInt_AsLong(o2);
2682     *i3 = PyInt_AsLong(o3);
2683     *i4 = PyInt_AsLong(o4);
2684
2685     if (! isFast) {
2686         Py_DECREF(o1);
2687         Py_DECREF(o2);
2688         Py_DECREF(o3);
2689         Py_DECREF(o4);
2690     }
2691     return true;
2692 }
2693
2694
2695 //----------------------------------------------------------------------
2696
2697 bool wxPySimple_typecheck(PyObject* source, const wxChar* classname, int seqLen)
2698 {
2699     void* ptr;
2700
2701     if (wxPySwigInstance_Check(source) &&
2702         wxPyConvertSwigPtr(source, (void **)&ptr, classname))
2703         return true;
2704
2705     PyErr_Clear();
2706     if (PySequence_Check(source) && PySequence_Length(source) == seqLen)
2707         return true;
2708
2709     return false;
2710 }
2711
2712 bool wxSize_helper(PyObject* source, wxSize** obj)
2713 {
2714     if (source == Py_None) {
2715         **obj = wxSize(-1,-1);
2716         return true;
2717     }
2718     return wxPyTwoIntItem_helper(source, obj, wxT("wxSize"));
2719 }
2720
2721
2722 bool wxPoint_helper(PyObject* source, wxPoint** obj)
2723 {
2724     if (source == Py_None) {
2725         **obj = wxPoint(-1,-1);
2726         return true;
2727     }
2728     return wxPyTwoIntItem_helper(source, obj, wxT("wxPoint"));
2729 }
2730
2731
2732
2733 bool wxPosition_helper(PyObject* source, wxPosition** obj)
2734 {
2735     if (source == Py_None) {
2736         **obj = wxPosition(-1,-1);
2737         return true;
2738     }
2739     return wxPyTwoIntItem_helper(source, obj, wxT("wxPosition"));
2740 }
2741
2742
2743
2744 bool wxRealPoint_helper(PyObject* source, wxRealPoint** obj) {
2745
2746     if (source == Py_None) {
2747         **obj = wxRealPoint(-1,-1);
2748         return true;
2749     }
2750
2751     // If source is an object instance then it may already be the right type
2752     if (wxPySwigInstance_Check(source)) {
2753         wxRealPoint* ptr;
2754         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRealPoint")))
2755             goto error;
2756         *obj = ptr;
2757         return true;
2758     }
2759     // otherwise a 2-tuple of floats is expected
2760     else if (PySequence_Check(source) && PyObject_Length(source) == 2) {
2761         PyObject* o1 = PySequence_GetItem(source, 0);
2762         PyObject* o2 = PySequence_GetItem(source, 1);
2763         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2764             Py_DECREF(o1);
2765             Py_DECREF(o2);
2766             goto error;
2767         }
2768         **obj = wxRealPoint(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2769         Py_DECREF(o1);
2770         Py_DECREF(o2);
2771         return true;
2772     }
2773
2774  error:
2775     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wxRealPoint object.");
2776     return false;
2777 }
2778
2779
2780
2781 bool wxRect_helper(PyObject* source, wxRect** obj) {
2782
2783     if (source == Py_None) {
2784         **obj = wxRect(-1,-1,-1,-1);
2785         return true;
2786     }
2787
2788     // If source is an object instance then it may already be the right type
2789     if (wxPySwigInstance_Check(source)) {
2790         wxRect* ptr;
2791         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect")))
2792             goto error;
2793         *obj = ptr;
2794         return true;
2795     }
2796     // otherwise a 4-tuple of integers is expected
2797     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2798         PyObject* o1 = PySequence_GetItem(source, 0);
2799         PyObject* o2 = PySequence_GetItem(source, 1);
2800         PyObject* o3 = PySequence_GetItem(source, 2);
2801         PyObject* o4 = PySequence_GetItem(source, 3);
2802         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2803             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2804             Py_DECREF(o1);
2805             Py_DECREF(o2);
2806             Py_DECREF(o3);
2807             Py_DECREF(o4);
2808             goto error;
2809         }
2810         **obj = wxRect(PyInt_AsLong(o1), PyInt_AsLong(o2),
2811                        PyInt_AsLong(o3), PyInt_AsLong(o4));
2812         Py_DECREF(o1);
2813         Py_DECREF(o2);
2814         Py_DECREF(o3);
2815         Py_DECREF(o4);
2816         return true;
2817     }
2818
2819  error:
2820     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of integers or a wxRect object.");
2821     return false;
2822 }
2823
2824
2825
2826 bool wxColour_helper(PyObject* source, wxColour** obj) {
2827
2828     if (source == Py_None) {
2829         **obj = wxNullColour;
2830         return true;
2831     }
2832
2833     // If source is an object instance then it may already be the right type
2834     if (wxPySwigInstance_Check(source)) {
2835         wxColour* ptr;
2836         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxColour")))
2837             goto error;
2838         *obj = ptr;
2839         return true;
2840     }
2841     // otherwise check for a string
2842     else if (PyString_Check(source) || PyUnicode_Check(source)) {
2843         wxString spec = Py2wxString(source);
2844         if (spec.GetChar(0) == '#' && spec.Length() == 7) {  // It's  #RRGGBB
2845             long red, green, blue;
2846             red = green = blue = 0;
2847             spec.Mid(1,2).ToLong(&red,   16);
2848             spec.Mid(3,2).ToLong(&green, 16);
2849             spec.Mid(5,2).ToLong(&blue,  16);
2850
2851             **obj = wxColour(red, green, blue);
2852             return true;
2853         }
2854         else {                                       // it's a colour name
2855             **obj = wxColour(spec);
2856             return true;
2857         }
2858     }
2859     // last chance: 3-tuple or 4-tuple of integers is expected
2860     else if (PySequence_Check(source) && PyObject_Length(source) == 3) {
2861         PyObject* o1 = PySequence_GetItem(source, 0);
2862         PyObject* o2 = PySequence_GetItem(source, 1);
2863         PyObject* o3 = PySequence_GetItem(source, 2);
2864         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3)) {
2865             Py_DECREF(o1);
2866             Py_DECREF(o2);
2867             Py_DECREF(o3);
2868             goto error;
2869         }
2870         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3));
2871         Py_DECREF(o1);
2872         Py_DECREF(o2);
2873         Py_DECREF(o3);
2874         return true;
2875     }
2876     else if (PySequence_Check(source) && PyObject_Length(source) == 4) {
2877         PyObject* o1 = PySequence_GetItem(source, 0);
2878         PyObject* o2 = PySequence_GetItem(source, 1);
2879         PyObject* o3 = PySequence_GetItem(source, 2);
2880         PyObject* o4 = PySequence_GetItem(source, 3);
2881         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) || !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2882             Py_DECREF(o1);
2883             Py_DECREF(o2);
2884             Py_DECREF(o3);
2885             Py_DECREF(o4);
2886             goto error;
2887         }
2888         **obj = wxColour(PyInt_AsLong(o1), PyInt_AsLong(o2), PyInt_AsLong(o3), PyInt_AsLong(o4));
2889         Py_DECREF(o1);
2890         Py_DECREF(o2);
2891         Py_DECREF(o3);
2892         Py_DECREF(o4);
2893         return true;
2894     }
2895
2896  error:
2897     PyErr_SetString(PyExc_TypeError,
2898                     "Expected a wxColour object, a string containing a colour name or '#RRGGBB', or a 3- or 4-tuple of integers.");
2899     return false;
2900 }
2901
2902
2903 bool wxColour_typecheck(PyObject* source) {
2904
2905     if (wxPySimple_typecheck(source, wxT("wxColour"), 3))
2906         return true;
2907
2908     if (PyString_Check(source) || PyUnicode_Check(source))
2909         return true;
2910
2911     return false;
2912 }
2913
2914
2915
2916 bool wxPoint2D_helper(PyObject* source, wxPoint2D** obj) {
2917
2918     if (source == Py_None) {
2919         **obj = wxPoint2D(-1,-1);
2920         return true;
2921     }
2922
2923     // If source is an object instance then it may already be the right type
2924     if (wxPySwigInstance_Check(source)) {
2925         wxPoint2D* ptr;
2926         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxPoint2D")))
2927             goto error;
2928         *obj = ptr;
2929         return true;
2930     }
2931     // otherwise a length-2 sequence of floats is expected
2932     if (PySequence_Check(source) && PySequence_Length(source) == 2) {
2933         PyObject* o1 = PySequence_GetItem(source, 0);
2934         PyObject* o2 = PySequence_GetItem(source, 1);
2935         // This should really check for floats, not numbers -- but that would break code.
2936         if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) {
2937             Py_DECREF(o1);
2938             Py_DECREF(o2);
2939             goto error;
2940         }
2941         **obj = wxPoint2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2));
2942         Py_DECREF(o1);
2943         Py_DECREF(o2);
2944         return true;
2945     }
2946  error:
2947     PyErr_SetString(PyExc_TypeError, "Expected a 2-tuple of floats or a wx.Point2D object.");
2948     return false;
2949 }
2950
2951
2952
2953 bool wxRect2D_helper(PyObject* source, wxRect2D** obj) {
2954
2955     if (source == Py_None) {
2956         **obj = wxRect2D(-1,-1,-1,-1);
2957         return true;
2958     }
2959
2960     // If source is an object instance then it may already be the right type
2961     if (wxPySwigInstance_Check(source)) {
2962         wxRect2D* ptr;
2963         if (! wxPyConvertSwigPtr(source, (void **)&ptr, wxT("wxRect2D")))
2964             goto error;
2965         *obj = ptr;
2966         return true;
2967     }
2968     // otherwise a length-4 sequence of floats is expected
2969     if (PySequence_Check(source) && PySequence_Length(source) == 4) {
2970         PyObject* o1 = PySequence_GetItem(source, 0);
2971         PyObject* o2 = PySequence_GetItem(source, 1);
2972         PyObject* o3 = PySequence_GetItem(source, 2);
2973         PyObject* o4 = PySequence_GetItem(source, 3);
2974         // This should really check for floats, not numbers -- but that would break code.
2975         if (!PyNumber_Check(o1) || !PyNumber_Check(o2) ||
2976             !PyNumber_Check(o3) || !PyNumber_Check(o4)) {
2977             Py_DECREF(o1);
2978             Py_DECREF(o2);
2979             Py_DECREF(o3);
2980             Py_DECREF(o4);
2981             goto error;
2982         }
2983         **obj = wxRect2D(PyFloat_AsDouble(o1), PyFloat_AsDouble(o2),
2984                          PyFloat_AsDouble(o3), PyFloat_AsDouble(o4));
2985         Py_DECREF(o1);
2986         Py_DECREF(o2);
2987         Py_DECREF(o3);
2988         Py_DECREF(o4);
2989         return true;
2990     }
2991  error:
2992     PyErr_SetString(PyExc_TypeError, "Expected a 4-tuple of floats or a wx.Rect2D object.");
2993     return false;
2994 }
2995
2996
2997 //----------------------------------------------------------------------
2998
2999 PyObject* wxArrayString2PyList_helper(const wxArrayString& arr)
3000 {
3001     PyObject* list = PyList_New(0);
3002     for (size_t i=0; i < arr.GetCount(); i++) {
3003 #if wxUSE_UNICODE
3004         PyObject* str = PyUnicode_FromWideChar(arr[i].c_str(), arr[i].Len());
3005 #else
3006         PyObject* str = PyString_FromStringAndSize(arr[i].c_str(), arr[i].Len());
3007 #endif
3008         PyList_Append(list, str);
3009         Py_DECREF(str);
3010     }
3011     return list;
3012 }
3013
3014
3015 PyObject* wxArrayInt2PyList_helper(const wxArrayInt& arr)
3016 {
3017     PyObject* list = PyList_New(0);
3018     for (size_t i=0; i < arr.GetCount(); i++) {
3019         PyObject* number = PyInt_FromLong(arr[i]);
3020         PyList_Append(list, number);
3021         Py_DECREF(number);
3022     }
3023     return list;
3024 }
3025
3026
3027 PyObject* wxArrayDouble2PyList_helper(const wxArrayDouble& arr)
3028 {
3029     PyObject* list = PyList_New(0);
3030     for (size_t i=0; i < arr.GetCount(); i++) {
3031         PyObject* number = PyFloat_FromDouble(arr[i]);
3032         PyList_Append(list, number);
3033         Py_DECREF(number);
3034     }
3035     return list;
3036 }
3037
3038
3039 //----------------------------------------------------------------------
3040 // wxPyImageHandler methods
3041 //
3042 // TODO: Switch these to use wxPython's standard macros and helper classes
3043 //       for calling callbacks.
3044
3045 PyObject* wxPyImageHandler::m_DoCanRead_Name = NULL;
3046 PyObject* wxPyImageHandler::m_GetImageCount_Name = NULL;
3047 PyObject* wxPyImageHandler::m_LoadFile_Name = NULL;
3048 PyObject* wxPyImageHandler::m_SaveFile_Name = NULL;
3049
3050 PyObject* wxPyImageHandler::py_InputStream(wxInputStream* stream) {
3051     return wxPyConstructObject(new wxPyInputStream(stream),
3052                                wxT("wxPyInputStream"), 0);
3053 }
3054
3055 PyObject* wxPyImageHandler::py_Image(wxImage* image) {
3056     return wxPyConstructObject(image, wxT("wxImage"), 0);
3057 }
3058
3059 PyObject* wxPyImageHandler::py_OutputStream(wxOutputStream* stream) {
3060     return wxPyConstructObject(stream, wxT("wxOutputStream"), 0);
3061 }
3062
3063 wxPyImageHandler::wxPyImageHandler():
3064     m_self(NULL)
3065 {
3066     if (!m_DoCanRead_Name) {
3067         m_DoCanRead_Name = PyString_FromString("DoCanRead");
3068         m_GetImageCount_Name = PyString_FromString("GetImageCount");
3069         m_LoadFile_Name = PyString_FromString("LoadFile");
3070         m_SaveFile_Name = PyString_FromString("SaveFile");
3071     }
3072 }
3073
3074 wxPyImageHandler::~wxPyImageHandler() {
3075     if (m_self) {
3076         Py_DECREF(m_self);
3077         m_self = NULL;
3078     }
3079 }
3080
3081 void wxPyImageHandler::_SetSelf(PyObject *self) {
3082     // should check here for isinstance(PyImageHandler) ??
3083     m_self = self;
3084     Py_INCREF(m_self);
3085 }
3086
3087 bool wxPyImageHandler::DoCanRead(wxInputStream& stream) {
3088     // check if our object has this method
3089     wxPyBlock_t blocked = wxPyBeginBlockThreads();
3090     if (!m_self || !PyObject_HasAttr(m_self, m_DoCanRead_Name)) {
3091         wxPyEndBlockThreads(blocked);
3092         return false;
3093     }
3094
3095     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_DoCanRead_Name,
3096                                                py_InputStream(&stream), NULL);
3097     bool retval = false;
3098     if (res) {
3099         retval = PyInt_AsLong(res);
3100         Py_DECREF(res);
3101         PyErr_Clear();
3102     }
3103     else
3104         PyErr_Print();
3105     wxPyEndBlockThreads(blocked);
3106     return retval;
3107 }
3108
3109 bool wxPyImageHandler::LoadFile( wxImage* image, wxInputStream& stream,
3110                                  bool verbose, int index ) {
3111     // check if our object has this method
3112     wxPyBlock_t blocked = wxPyBeginBlockThreads();
3113     if (!m_self || !PyObject_HasAttr(m_self, m_LoadFile_Name)) {
3114         wxPyEndBlockThreads(blocked);
3115         return false;
3116     }
3117     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_LoadFile_Name,
3118                                                py_Image(image),
3119                                                py_InputStream(&stream),
3120                                                PyInt_FromLong(verbose),
3121                                                PyInt_FromLong(index),
3122                                                NULL);
3123     bool retval = false;
3124     if (res) {
3125         retval = PyInt_AsLong(res);
3126         Py_DECREF(res);
3127         PyErr_Clear();
3128     } else
3129         PyErr_Print();
3130     wxPyEndBlockThreads(blocked);
3131     return retval;
3132 }
3133
3134 bool wxPyImageHandler::SaveFile( wxImage* image, wxOutputStream& stream,
3135                                  bool verbose ) {
3136     wxPyBlock_t blocked = wxPyBeginBlockThreads();
3137     if (!m_self || !PyObject_HasAttr(m_self, m_SaveFile_Name)) {
3138         wxPyEndBlockThreads(blocked);
3139         return false;
3140     }
3141     PyObject* res = PyObject_CallMethodObjArgs(m_self, m_SaveFile_Name,
3142                                                py_Image(image),
3143                                                py_OutputStream(&stream),
3144                                                PyInt_FromLong(verbose),
3145                                                NULL);
3146     bool retval = false;
3147     if(res) {
3148         retval=PyInt_AsLong(res);
3149         Py_DECREF(res);
3150         PyErr_Clear();
3151     } else
3152         PyErr_Print();
3153     wxPyEndBlockThreads(blocked);
3154     return retval;
3155 }
3156
3157 int wxPyImageHandler::GetImageCount( wxInputStream& stream ) {
3158     wxPyBlock_t blocked = wxPyBeginBlockThreads();
3159     if (!m_self || !PyObject_HasAttr(m_self, m_GetImageCount_Name)) {
3160         wxPyEndBlockThreads(blocked);
3161         return 1;
3162     }
3163     PyObject *res=PyObject_CallMethodObjArgs(m_self, m_GetImageCount_Name,
3164                                              py_InputStream(&stream),
3165                                              NULL);
3166     int retval = 1;
3167     if(res) {
3168         retval=PyInt_AsLong(res);
3169         Py_DECREF(res);
3170         PyErr_Clear();
3171     } else
3172         PyErr_Print();
3173     wxPyEndBlockThreads(blocked);
3174     return retval;
3175 }
3176
3177
3178 //----------------------------------------------------------------------
3179 // Function to test if the Display (or whatever is the platform equivallent)
3180 // can be connected to.  This is accessable from wxPython as a staticmethod of
3181 // wx.App called DisplayAvailable().
3182
3183
3184 bool wxPyTestDisplayAvailable()
3185 {
3186 #ifdef __WXGTK__
3187     Display* display;
3188     display = XOpenDisplay(NULL);
3189     if (display == NULL)
3190         return false;
3191     XCloseDisplay(display);
3192     return true;
3193 #endif
3194
3195 #ifdef __WXMAC__
3196     // This is adapted from Python's Mac/Modules/MacOS.c in the
3197     // MacOS_WMAvailable function.
3198     bool rv;
3199     ProcessSerialNumber psn;
3200
3201     /*
3202     ** This is a fairly innocuous call to make if we don't have a window
3203     ** manager, or if we have no permission to talk to it. It will print
3204     ** a message on stderr, but at least it won't abort the process.
3205     ** It appears the function caches the result itself, and it's cheap, so
3206     ** no need for us to cache.
3207     */
3208 #ifdef kCGNullDirectDisplay
3209     /* On 10.1 CGMainDisplayID() isn't available, and
3210     ** kCGNullDirectDisplay isn't defined.
3211     */
3212     if (CGMainDisplayID() == 0) {
3213         rv = false;
3214     } else
3215 #endif
3216     {
3217         // Also foreground the application on the first call as a side-effect.
3218         if (GetCurrentProcess(&psn) < 0 || SetFrontProcess(&psn) < 0) {
3219             rv = false;
3220         } else {
3221             rv = true;
3222         }
3223     }
3224     return rv;
3225 #endif
3226
3227 #ifdef __WXMSW__
3228     // TODO...
3229     return true;
3230 #endif
3231 }
3232
3233
3234 //----------------------------------------------------------------------
3235 //----------------------------------------------------------------------
3236
3237
3238
3239