src/x11/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Purpose:     wxApp
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13     #pragma implementation "app.h"
  14 #endif
  15
  16 #include "wx/frame.h"
  17 #include "wx/app.h"
  18 #include "wx/utils.h"
  19 #include "wx/gdicmn.h"
  20 #include "wx/icon.h"
  21 #include "wx/dialog.h"
  22 #include "wx/log.h"
  23 #include "wx/module.h"
  24 #include "wx/memory.h"
  25 #include "wx/log.h"
  26 #include "wx/intl.h"
  27 #include "wx/evtloop.h"
  28 #include "wx/timer.h"
  29
  30 #include "wx/univ/theme.h"
  31 #include "wx/univ/renderer.h"
  32
  33 #if wxUSE_THREADS
  34     #include "wx/thread.h"
  35 #endif
  36
  37 #if wxUSE_WX_RESOURCES
  38     #include "wx/resource.h"
  39 #endif
  40
  41 #include "wx/x11/private.h"
  42
  43 #include <string.h>
  44
  45 //------------------------------------------------------------------------
  46 //   global data
  47 //------------------------------------------------------------------------
  48
  49 extern wxList wxPendingDelete;
  50
  51 wxHashTable *wxWidgetHashTable = NULL;
  52 wxHashTable *wxClientWidgetHashTable = NULL;
  53
  54 wxApp *wxTheApp = NULL;
  55
  56 // This is set within wxEntryStart -- too early on
  57 // to put these in wxTheApp
  58 static int g_newArgc = 0;
  59 static wxChar** g_newArgv = NULL;
  60 static bool g_showIconic = FALSE;
  61 static wxSize g_initialSize = wxDefaultSize;
  62
  63 // This is required for wxFocusEvent::SetWindow(). It will only
  64 // work for focus events which we provoke ourselves (by calling
  65 // SetFocus()). It will not work for those events, which X11
  66 // generates itself.
  67 static wxWindow *g_nextFocus = NULL;
  68 static wxWindow *g_prevFocus = NULL;
  69
  70 //------------------------------------------------------------------------
  71 //   X11 error handling
  72 //------------------------------------------------------------------------
  73
  74 #ifdef __WXDEBUG__
  75 typedef int (*XErrorHandlerFunc)(Display *, XErrorEvent *);
  76
  77 XErrorHandlerFunc gs_pfnXErrorHandler = 0;
  78
  79 static int wxXErrorHandler(Display *dpy, XErrorEvent *xevent)
  80 {
  81     // just forward to the default handler for now
  82     if (gs_pfnXErrorHandler)
  83         return gs_pfnXErrorHandler(dpy, xevent);
  84     else
  85         return 0;
  86 }
  87 #endif // __WXDEBUG__
  88
  89 //------------------------------------------------------------------------
  90 //   wxApp
  91 //------------------------------------------------------------------------
  92
  93 long wxApp::sm_lastMessageTime = 0;
  94 WXDisplay *wxApp::ms_display = NULL;
  95
  96 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
  97
  98 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
  99     EVT_IDLE(wxApp::OnIdle)
 100 END_EVENT_TABLE()
 101
 102 bool wxApp::Initialize()
 103 {
 104     wxClassInfo::InitializeClasses();
 105
 106     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 107     // create a module for that as it's part of the core.
 108 #if wxUSE_THREADS
 109     wxPendingEventsLocker = new wxCriticalSection();
 110 #endif
 111
 112     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 113     wxTheColourDatabase->Initialize();
 114
 115     wxInitializeStockLists();
 116     wxInitializeStockObjects();
 117
 118 #if wxUSE_WX_RESOURCES
 119     wxInitializeResourceSystem();
 120 #endif
 121
 122     wxWidgetHashTable = new wxHashTable(wxKEY_INTEGER);
 123     wxClientWidgetHashTable = new wxHashTable(wxKEY_INTEGER);
 124
 125     wxModule::RegisterModules();
 126     if (!wxModule::InitializeModules()) return FALSE;
 127
 128     return TRUE;
 129 }
 130
 131 void wxApp::CleanUp()
 132 {
 133     if (g_newArgv)
 134         delete[] g_newArgv;
 135     g_newArgv = NULL;
 136
 137     delete wxWidgetHashTable;
 138     wxWidgetHashTable = NULL;
 139     delete wxClientWidgetHashTable;
 140     wxClientWidgetHashTable = NULL;
 141
 142     wxModule::CleanUpModules();
 143
 144 #if wxUSE_WX_RESOURCES
 145     wxCleanUpResourceSystem();
 146 #endif
 147
 148     delete wxTheColourDatabase;
 149     wxTheColourDatabase = NULL;
 150
 151     wxDeleteStockObjects();
 152
 153     wxDeleteStockLists();
 154
 155     delete wxTheApp;
 156     wxTheApp = NULL;
 157
 158     wxClassInfo::CleanUpClasses();
 159
 160 #if wxUSE_THREADS
 161     delete wxPendingEvents;
 162     delete wxPendingEventsLocker;
 163 #endif
 164
 165 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 166     // At this point we want to check if there are any memory
 167     // blocks that aren't part of the wxDebugContext itself,
 168     // as a special case. Then when dumping we need to ignore
 169     // wxDebugContext, too.
 170     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 171     {
 172         wxLogDebug("There were memory leaks.");
 173         wxDebugContext::Dump();
 174         wxDebugContext::PrintStatistics();
 175     }
 176 #endif
 177
 178     // do it as the very last thing because everything else can log messages
 179     wxLog::DontCreateOnDemand();
 180     // do it as the very last thing because everything else can log messages
 181     delete wxLog::SetActiveTarget(NULL);
 182 }
 183
 184 // NB: argc and argv may be changed here, pass by reference!
 185 int wxEntryStart( int& argc, char *argv[] )
 186 {
 187 #ifdef __WXDEBUG__
 188 #if !wxUSE_NANOX
 189     // install the X error handler
 190     gs_pfnXErrorHandler = XSetErrorHandler( wxXErrorHandler );
 191 #endif
 192 #endif // __WXDEBUG__
 193
 194     wxString displayName;
 195     bool syncDisplay = FALSE;
 196
 197     // Parse the arguments.
 198     // We can't use wxCmdLineParser or OnInitCmdLine and friends because
 199     // we have to create the Display earlier. If we can find a way to
 200     // use the wxAppBase API then I'll be quite happy to change it.
 201     g_newArgv = new wxChar*[argc];
 202     g_newArgc = 0;
 203     int i;
 204     for (i = 0; i < argc; i++)
 205     {
 206         wxString arg(argv[i]);
 207         if (arg == wxT("-display"))
 208         {
 209             if (i < (argc - 1))
 210             {
 211                 i ++;
 212                 displayName = argv[i];
 213                 continue;
 214             }
 215         }
 216         else if (arg == wxT("-geometry"))
 217         {
 218             if (i < (argc - 1))
 219             {
 220                 i ++;
 221                 wxString windowGeometry = argv[i];
 222                 int w, h;
 223                 if (wxSscanf(windowGeometry.c_str(), _T("%dx%d"), &w, &h) != 2)
 224                 {
 225                     wxLogError(_("Invalid geometry specification '%s'"), windowGeometry.c_str());
 226                 }
 227                 else
 228                 {
 229                     g_initialSize = wxSize(w, h);
 230                 }
 231                 continue;
 232             }
 233         }
 234         else if (arg == wxT("-sync"))
 235         {
 236             syncDisplay = TRUE;
 237             continue;
 238         }
 239         else if (arg == wxT("-iconic"))
 240         {
 241             g_showIconic = TRUE;
 242
 243             continue;
 244         }
 245
 246         // Not eaten by wxWindows, so pass through
 247         g_newArgv[g_newArgc] = argv[i];
 248         g_newArgc ++;
 249     }
 250
 251     Display* xdisplay = NULL;
 252     if (displayName.IsEmpty())
 253         xdisplay = XOpenDisplay(NULL);
 254     else
 255         xdisplay = XOpenDisplay((char*) displayName.c_str());
 256
 257     if (!xdisplay)
 258     {
 259         wxLogError( _("wxWindows could not open display. Exiting.") );
 260         return -1;
 261     }
 262
 263     if (syncDisplay)
 264     {
 265         XSynchronize(xdisplay, True);
 266     }
 267
 268     wxApp::ms_display = (WXDisplay*) xdisplay;
 269
 270     XSelectInput( xdisplay, XDefaultRootWindow(xdisplay), PropertyChangeMask);
 271
 272     wxSetDetectableAutoRepeat( TRUE );
 273
 274     if (!wxApp::Initialize())
 275         return -1;
 276
 277     return 0;
 278 }
 279
 280 int wxEntryInitGui()
 281 {
 282     int retValue = 0;
 283
 284     if ( !wxTheApp->OnInitGui() )
 285         retValue = -1;
 286
 287     return retValue;
 288 }
 289
 290
 291 int wxEntry( int argc, char *argv[] )
 292 {
 293 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 294     // This seems to be necessary since there are 'rogue'
 295     // objects present at this point (perhaps global objects?)
 296     // Setting a checkpoint will ignore them as far as the
 297     // memory checking facility is concerned.
 298     // Of course you may argue that memory allocated in globals should be
 299     // checked, but this is a reasonable compromise.
 300     wxDebugContext::SetCheckpoint();
 301 #endif
 302     int err = wxEntryStart(argc, argv);
 303     if (err)
 304         return err;
 305
 306     if (!wxTheApp)
 307     {
 308         if (!wxApp::GetInitializerFunction())
 309         {
 310             printf( "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
 311             return 0;
 312         };
 313
 314         wxTheApp = (wxApp*) (* wxApp::GetInitializerFunction()) ();
 315     };
 316
 317     if (!wxTheApp)
 318     {
 319         printf( "wxWindows error: wxTheApp == NULL\n" );
 320         return 0;
 321     };
 322
 323     wxTheApp->SetClassName(wxFileNameFromPath(argv[0]));
 324     wxTheApp->SetAppName(wxFileNameFromPath(argv[0]));
 325
 326     // The command line may have been changed
 327     // by stripping out -display etc.
 328     if (g_newArgc > 0)
 329     {
 330         wxTheApp->argc = g_newArgc;
 331         wxTheApp->argv = g_newArgv;
 332     }
 333     else
 334     {
 335         wxTheApp->argc = argc;
 336         wxTheApp->argv = argv;
 337     }
 338     wxTheApp->m_showIconic = g_showIconic;
 339     wxTheApp->m_initialSize = g_initialSize;
 340
 341     int retValue;
 342     retValue = wxEntryInitGui();
 343
 344     // Here frames insert themselves automatically into wxTopLevelWindows by
 345     // getting created in OnInit().
 346     if ( retValue == 0 )
 347     {
 348         if ( !wxTheApp->OnInit() )
 349             retValue = -1;
 350     }
 351
 352     if ( retValue == 0 )
 353     {
 354         if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun();
 355     }
 356
 357     // flush the logged messages if any
 358     wxLog *pLog = wxLog::GetActiveTarget();
 359     if ( pLog != NULL && pLog->HasPendingMessages() )
 360         pLog->Flush();
 361
 362     delete wxLog::SetActiveTarget(new wxLogStderr); // So dialog boxes aren't used
 363     // for further messages
 364
 365     if (wxTheApp->GetTopWindow())
 366     {
 367         delete wxTheApp->GetTopWindow();
 368         wxTheApp->SetTopWindow(NULL);
 369     }
 370
 371     wxTheApp->DeletePendingObjects();
 372
 373     wxTheApp->OnExit();
 374
 375     wxApp::CleanUp();
 376
 377     return retValue;
 378 };
 379
 380 // Static member initialization
 381 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 382
 383 wxApp::wxApp()
 384 {
 385     m_topWindow = NULL;
 386     wxTheApp = this;
 387     m_className = "";
 388     m_wantDebugOutput = TRUE ;
 389     m_appName = "";
 390     argc = 0;
 391     argv = NULL;
 392     m_exitOnFrameDelete = TRUE;
 393     m_mainColormap = (WXColormap) NULL;
 394     m_topLevelWidget = (WXWindow) NULL;
 395     m_maxRequestSize = 0;
 396     m_mainLoop = NULL;
 397     m_showIconic = FALSE;
 398     m_initialSize = wxDefaultSize;
 399 }
 400
 401 bool wxApp::Initialized()
 402 {
 403     if (GetTopWindow())
 404         return TRUE;
 405     else
 406         return FALSE;
 407 }
 408
 409 int wxApp::MainLoop()
 410 {
 411     int rt;
 412     m_mainLoop = new wxEventLoop;
 413
 414     rt = m_mainLoop->Run();
 415
 416     delete m_mainLoop;
 417     m_mainLoop = NULL;
 418     return rt;
 419 }
 420
 421 #if !wxUSE_NANOX
 422 //-----------------------------------------------------------------------
 423 // X11 predicate function for exposure compression
 424 //-----------------------------------------------------------------------
 425
 426 struct wxExposeInfo
 427 {
 428     Window window;
 429     Bool found_non_matching;
 430 };
 431
 432 static Bool expose_predicate (Display *display, XEvent *xevent, XPointer arg)
 433 {
 434     wxExposeInfo *info = (wxExposeInfo*) arg;
 435
 436     if (info->found_non_matching)
 437        return FALSE;
 438
 439     if (xevent->xany.type != Expose)
 440     {
 441         info->found_non_matching = TRUE;
 442         return FALSE;
 443     }
 444
 445     if (xevent->xexpose.window != info->window)
 446     {
 447         info->found_non_matching = TRUE;
 448         return FALSE;
 449     }
 450
 451     return TRUE;
 452 }
 453 #endif
 454     // wxUSE_NANOX
 455
 456 //-----------------------------------------------------------------------
 457 // Processes an X event, returning TRUE if the event was processed.
 458 //-----------------------------------------------------------------------
 459
 460 bool wxApp::ProcessXEvent(WXEvent* _event)
 461 {
 462     XEvent* event = (XEvent*) _event;
 463
 464     wxWindow* win = NULL;
 465     Window window = XEventGetWindow(event);
 466     Window actualWindow = window;
 467
 468     // Find the first wxWindow that corresponds to this event window
 469     // Because we're receiving events after a window
 470     // has been destroyed, assume a 1:1 match between
 471     // Window and wxWindow, so if it's not in the table,
 472     // it must have been destroyed.
 473
 474     win = wxGetWindowFromTable(window);
 475     if (!win)
 476     {
 477 #if wxUSE_TWO_WINDOWS
 478         win = wxGetClientWindowFromTable(window);
 479         if (!win)
 480 #endif
 481             return FALSE;
 482     }
 483
 484 #ifdef __WXDEBUG__
 485     wxString windowClass = win->GetClassInfo()->GetClassName();
 486 #endif
 487
 488     switch (event->type)
 489     {
 490         case Expose:
 491         {
 492 #if wxUSE_TWO_WINDOWS
 493             if (event->xexpose.window != (Window)win->GetClientWindow())
 494             {
 495                 XEvent tmp_event;
 496                 wxExposeInfo info;
 497                 info.window = event->xexpose.window;
 498                 info.found_non_matching = FALSE;
 499                 while (XCheckIfEvent( wxGlobalDisplay(), &tmp_event, expose_predicate, (XPointer) &info ))
 500                 {
 501                     // Don't worry about optimizing redrawing the border etc.
 502                 }
 503                 win->NeedUpdateNcAreaInIdle();
 504             }
 505             else
 506 #endif
 507             {
 508                 win->GetUpdateRegion().Union( XExposeEventGetX(event), XExposeEventGetY(event),
 509                                               XExposeEventGetWidth(event), XExposeEventGetHeight(event));
 510
 511                 win->GetClearRegion().Union( XExposeEventGetX(event), XExposeEventGetY(event),
 512                                          XExposeEventGetWidth(event), XExposeEventGetHeight(event));
 513
 514 #if !wxUSE_NANOX
 515                 XEvent tmp_event;
 516                 wxExposeInfo info;
 517                 info.window = event->xexpose.window;
 518                 info.found_non_matching = FALSE;
 519                 while (XCheckIfEvent( wxGlobalDisplay(), &tmp_event, expose_predicate, (XPointer) &info ))
 520                 {
 521                     win->GetUpdateRegion().Union( tmp_event.xexpose.x, tmp_event.xexpose.y,
 522                                                   tmp_event.xexpose.width, tmp_event.xexpose.height );
 523
 524                     win->GetClearRegion().Union( tmp_event.xexpose.x, tmp_event.xexpose.y,
 525                                                  tmp_event.xexpose.width, tmp_event.xexpose.height );
 526                 }
 527 #endif
 528                 if (win->GetMainWindow() == win->GetClientWindow())
 529                     win->NeedUpdateNcAreaInIdle();
 530
 531                 // Only erase background, paint in idle time.
 532                 win->SendEraseEvents();
 533                 //win->Update();
 534             }
 535
 536             return TRUE;
 537         }
 538
 539 #if !wxUSE_NANOX
 540         case GraphicsExpose:
 541         {
 542             // wxLogDebug( "GraphicsExpose from %s", win->GetName().c_str(),
 543             //                              event->xgraphicsexpose.x, event->xgraphicsexpose.y,
 544             //                              event->xgraphicsexpose.width, event->xgraphicsexpose.height);
 545
 546             win->GetUpdateRegion().Union( event->xgraphicsexpose.x, event->xgraphicsexpose.y,
 547                                           event->xgraphicsexpose.width, event->xgraphicsexpose.height);
 548
 549             win->GetClearRegion().Union( event->xgraphicsexpose.x, event->xgraphicsexpose.y,
 550                                          event->xgraphicsexpose.width, event->xgraphicsexpose.height);
 551
 552             if (event->xgraphicsexpose.count == 0)
 553             {
 554                 // Only erase background, paint in idle time.
 555                 win->SendEraseEvents();
 556                 //win->Update();
 557             }
 558
 559             return TRUE;
 560         }
 561 #endif
 562
 563         case KeyPress:
 564         {
 565             if (!win->IsEnabled())
 566                 return FALSE;
 567
 568             wxKeyEvent keyEvent(wxEVT_KEY_DOWN);
 569             wxTranslateKeyEvent(keyEvent, win, window, event);
 570
 571             // wxLogDebug( "OnKey from %s", win->GetName().c_str() );
 572
 573             // We didn't process wxEVT_KEY_DOWN, so send wxEVT_CHAR
 574             if (win->GetEventHandler()->ProcessEvent( keyEvent ))
 575                 return TRUE;
 576
 577             keyEvent.SetEventType(wxEVT_CHAR);
 578             if (win->GetEventHandler()->ProcessEvent( keyEvent ))
 579                 return TRUE;
 580
 581             if ( (keyEvent.m_keyCode == WXK_TAB) &&
 582                  win->GetParent() && (win->GetParent()->HasFlag( wxTAB_TRAVERSAL)) )
 583             {
 584                 wxNavigationKeyEvent new_event;
 585                 new_event.SetEventObject( win->GetParent() );
 586                 /* GDK reports GDK_ISO_Left_Tab for SHIFT-TAB */
 587                 new_event.SetDirection( (keyEvent.m_keyCode == WXK_TAB) );
 588                 /* CTRL-TAB changes the (parent) window, i.e. switch notebook page */
 589                 new_event.SetWindowChange( keyEvent.ControlDown() );
 590                 new_event.SetCurrentFocus( win );
 591                 return win->GetParent()->GetEventHandler()->ProcessEvent( new_event );
 592             }
 593
 594             return FALSE;
 595         }
 596         case KeyRelease:
 597         {
 598             if (!win->IsEnabled())
 599                 return FALSE;
 600
 601             wxKeyEvent keyEvent(wxEVT_KEY_UP);
 602             wxTranslateKeyEvent(keyEvent, win, window, event);
 603
 604             return win->GetEventHandler()->ProcessEvent( keyEvent );
 605         }
 606         case ConfigureNotify:
 607         {
 608 #if wxUSE_NANOX
 609             if (event->update.utype == GR_UPDATE_SIZE)
 610 #endif
 611             {
 612                 if (win->IsTopLevel() && win->IsShown())
 613                 {
 614                     wxTopLevelWindowX11 *tlw = (wxTopLevelWindowX11 *) win;
 615                     tlw->SetNeedResizeInIdle();
 616                 }
 617                 else
 618                 {
 619                     wxSizeEvent sizeEvent( wxSize(XConfigureEventGetWidth(event), XConfigureEventGetHeight(event)), win->GetId() );
 620                     sizeEvent.SetEventObject( win );
 621
 622                     return win->GetEventHandler()->ProcessEvent( sizeEvent );
 623                 }
 624             }
 625             return FALSE;
 626             break;
 627         }
 628 #if !wxUSE_NANOX
 629         case PropertyNotify:
 630         {
 631             //wxLogDebug("PropertyNotify: %s", windowClass.c_str());
 632             return HandlePropertyChange(_event);
 633         }
 634         case ClientMessage:
 635         {
 636             if (!win->IsEnabled())
 637                 return FALSE;
 638
 639             Atom wm_delete_window = XInternAtom(wxGlobalDisplay(), "WM_DELETE_WINDOW", True);
 640             Atom wm_protocols = XInternAtom(wxGlobalDisplay(), "WM_PROTOCOLS", True);
 641
 642             if (event->xclient.message_type == wm_protocols)
 643             {
 644                 if ((Atom) (event->xclient.data.l[0]) == wm_delete_window)
 645                 {
 646                     win->Close(FALSE);
 647                     return TRUE;
 648                 }
 649             }
 650             return FALSE;
 651         }
 652 #if 0
 653         case DestroyNotify:
 654         {
 655             printf( "destroy from %s\n", win->GetName().c_str() );
 656             break;
 657         }
 658         case CreateNotify:
 659         {
 660             printf( "create from %s\n", win->GetName().c_str() );
 661             break;
 662         }
 663         case MapRequest:
 664         {
 665             printf( "map request from %s\n", win->GetName().c_str() );
 666             break;
 667         }
 668         case ResizeRequest:
 669         {
 670             printf( "resize request from %s\n", win->GetName().c_str() );
 671
 672             Display *disp = (Display*) wxGetDisplay();
 673             XEvent report;
 674
 675             //  to avoid flicker
 676             report = * event;
 677             while( XCheckTypedWindowEvent (disp, actualWindow, ResizeRequest, &report));
 678
 679             wxSize sz = win->GetSize();
 680             wxSizeEvent sizeEvent(sz, win->GetId());
 681             sizeEvent.SetEventObject(win);
 682
 683             return win->GetEventHandler()->ProcessEvent( sizeEvent );
 684         }
 685 #endif
 686 #endif
 687 #if wxUSE_NANOX
 688         case GR_EVENT_TYPE_CLOSE_REQ:
 689         {
 690             if (win)
 691             {
 692                 win->Close(FALSE);
 693                 return TRUE;
 694             }
 695             return FALSE;
 696             break;
 697         }
 698 #endif
 699         case EnterNotify:
 700         case LeaveNotify:
 701         case ButtonPress:
 702         case ButtonRelease:
 703         case MotionNotify:
 704         {
 705             if (!win->IsEnabled())
 706                 return FALSE;
 707
 708             // Here we check if the top level window is
 709             // disabled, which is one aspect of modality.
 710             wxWindow *tlw = win;
 711             while (tlw && !tlw->IsTopLevel())
 712                 tlw = tlw->GetParent();
 713             if (tlw && !tlw->IsEnabled())
 714                 return FALSE;
 715
 716             if (event->type == ButtonPress)
 717             {
 718                 if ((win != wxWindow::FindFocus()) && win->AcceptsFocus())
 719                 {
 720                     // This might actually be done in wxWindow::SetFocus()
 721                     // and not here. TODO.
 722                     g_prevFocus = wxWindow::FindFocus();
 723                     g_nextFocus = win;
 724
 725                     win->SetFocus();
 726                 }
 727             }
 728
 729 #if !wxUSE_NANOX
 730             if (event->type == LeaveNotify || event->type == EnterNotify)
 731             {
 732                 // Throw out NotifyGrab and NotifyUngrab
 733                 if (event->xcrossing.mode != NotifyNormal)
 734                     return FALSE;
 735             }
 736 #endif
 737             wxMouseEvent wxevent;
 738             wxTranslateMouseEvent(wxevent, win, window, event);
 739             return win->GetEventHandler()->ProcessEvent( wxevent );
 740         }
 741         case FocusIn:
 742             {
 743 #if !wxUSE_NANOX
 744                 if ((event->xfocus.detail != NotifyPointer) &&
 745                     (event->xfocus.mode == NotifyNormal))
 746 #endif
 747                 {
 748                     // wxLogDebug( "FocusIn from %s of type %s", win->GetName().c_str(), win->GetClassInfo()->GetClassName() );
 749
 750                     wxFocusEvent focusEvent(wxEVT_SET_FOCUS, win->GetId());
 751                     focusEvent.SetEventObject(win);
 752                     focusEvent.SetWindow( g_prevFocus );
 753                     g_prevFocus = NULL;
 754
 755                     return win->GetEventHandler()->ProcessEvent(focusEvent);
 756                 }
 757                 return FALSE;
 758                 break;
 759             }
 760         case FocusOut:
 761             {
 762 #if !wxUSE_NANOX
 763                 if ((event->xfocus.detail != NotifyPointer) &&
 764                     (event->xfocus.mode == NotifyNormal))
 765 #endif
 766                 {
 767                     // wxLogDebug( "FocusOut from %s of type %s", win->GetName().c_str(), win->GetClassInfo()->GetClassName() );
 768
 769                     wxFocusEvent focusEvent(wxEVT_KILL_FOCUS, win->GetId());
 770                     focusEvent.SetEventObject(win);
 771                     focusEvent.SetWindow( g_nextFocus );
 772                     g_nextFocus = NULL;
 773                     return win->GetEventHandler()->ProcessEvent(focusEvent);
 774                 }
 775                 return FALSE;
 776                 break;
 777             }
 778         default:
 779         {
 780 #ifdef __WXDEBUG__
 781             //wxString eventName = wxGetXEventName(XEvent& event);
 782             //wxLogDebug(wxT("Event %s not handled"), eventName.c_str());
 783 #endif
 784             return FALSE;
 785             break;
 786         }
 787     }
 788     return FALSE;
 789 }
 790
 791 // Returns TRUE if more time is needed.
 792 // Note that this duplicates wxEventLoopImpl::SendIdleEvent
 793 // but ProcessIdle may be needed by apps, so is kept.
 794 bool wxApp::ProcessIdle()
 795 {
 796     wxIdleEvent event;
 797     event.SetEventObject(this);
 798     ProcessEvent(event);
 799
 800     return event.MoreRequested();
 801 }
 802
 803 void wxApp::ExitMainLoop()
 804 {
 805     if (m_mainLoop)
 806         m_mainLoop->Exit(0);
 807 }
 808
 809 // Is a message/event pending?
 810 bool wxApp::Pending()
 811 {
 812     return wxEventLoop::GetActive()->Pending();
 813 }
 814
 815 // Dispatch a message.
 816 void wxApp::Dispatch()
 817 {
 818     wxEventLoop::GetActive()->Dispatch();
 819 }
 820
 821 // This should be redefined in a derived class for
 822 // handling property change events for XAtom IPC.
 823 bool wxApp::HandlePropertyChange(WXEvent *event)
 824 {
 825     // by default do nothing special
 826     // TODO: what to do for X11
 827     // XtDispatchEvent((XEvent*) event);
 828     return FALSE;
 829 }
 830
 831 void wxApp::OnIdle(wxIdleEvent& event)
 832 {
 833     static bool s_inOnIdle = FALSE;
 834
 835     // Avoid recursion (via ProcessEvent default case)
 836     if (s_inOnIdle)
 837         return;
 838
 839     s_inOnIdle = TRUE;
 840
 841     // Resend in the main thread events which have been prepared in other
 842     // threads
 843     ProcessPendingEvents();
 844
 845     // 'Garbage' collection of windows deleted with Close()
 846     DeletePendingObjects();
 847
 848     // Send OnIdle events to all windows
 849     bool needMore = SendIdleEvents();
 850
 851     if (needMore)
 852         event.RequestMore(TRUE);
 853
 854     s_inOnIdle = FALSE;
 855 }
 856
 857 void wxWakeUpIdle()
 858 {
 859     // **** please implement me! ****
 860     // Wake up the idle handler processor, even if it is in another thread...
 861 }
 862
 863
 864 // Send idle event to all top-level windows
 865 bool wxApp::SendIdleEvents()
 866 {
 867     bool needMore = FALSE;
 868
 869     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
 870     while (node)
 871     {
 872         wxWindow* win = node->GetData();
 873         if (SendIdleEvents(win))
 874             needMore = TRUE;
 875         node = node->GetNext();
 876     }
 877
 878     return needMore;
 879 }
 880
 881 // Send idle event to window and all subwindows
 882 bool wxApp::SendIdleEvents(wxWindow* win)
 883 {
 884     bool needMore = FALSE;
 885
 886     wxIdleEvent event;
 887     event.SetEventObject(win);
 888
 889     win->GetEventHandler()->ProcessEvent(event);
 890
 891     win->OnInternalIdle();
 892
 893     if (event.MoreRequested())
 894         needMore = TRUE;
 895
 896     wxNode* node = win->GetChildren().First();
 897     while (node)
 898     {
 899         wxWindow* win = (wxWindow*) node->Data();
 900         if (SendIdleEvents(win))
 901             needMore = TRUE;
 902
 903         node = node->Next();
 904     }
 905
 906     return needMore;
 907 }
 908
 909 void wxApp::DeletePendingObjects()
 910 {
 911     wxNode *node = wxPendingDelete.First();
 912     while (node)
 913     {
 914         wxObject *obj = (wxObject *)node->Data();
 915
 916         delete obj;
 917
 918         if (wxPendingDelete.Member(obj))
 919             delete node;
 920
 921         // Deleting one object may have deleted other pending
 922         // objects, so start from beginning of list again.
 923         node = wxPendingDelete.First();
 924     }
 925 }
 926
 927 // Create display, and other initialization
 928 bool wxApp::OnInitGui()
 929 {
 930     // Eventually this line will be removed, but for
 931     // now we don't want to try popping up a dialog
 932     // for error messages.
 933     delete wxLog::SetActiveTarget(new wxLogStderr);
 934
 935     if (!wxAppBase::OnInitGui())
 936     return FALSE;
 937
 938     GetMainColormap( wxApp::GetDisplay() );
 939
 940     m_maxRequestSize = XMaxRequestSize( (Display*) wxApp::GetDisplay() );
 941
 942     return TRUE;
 943 }
 944
 945 WXColormap wxApp::GetMainColormap(WXDisplay* display)
 946 {
 947     if (!display) /* Must be called first with non-NULL display */
 948         return m_mainColormap;
 949
 950     int defaultScreen = DefaultScreen((Display*) display);
 951     Screen* screen = XScreenOfDisplay((Display*) display, defaultScreen);
 952
 953     Colormap c = DefaultColormapOfScreen(screen);
 954
 955     if (!m_mainColormap)
 956         m_mainColormap = (WXColormap) c;
 957
 958     return (WXColormap) c;
 959 }
 960
 961 Window wxGetWindowParent(Window window)
 962 {
 963     wxASSERT_MSG( window, "invalid window" );
 964
 965     return (Window) 0;
 966
 967     Window parent, root = 0;
 968 #if wxUSE_NANOX
 969     int noChildren = 0;
 970 #else
 971     unsigned int noChildren = 0;
 972 #endif
 973     Window* children = NULL;
 974
 975     // #define XQueryTree(d,w,r,p,c,nc)     GrQueryTree(w,p,c,nc)
 976     int res = 1;
 977 #if !wxUSE_NANOX
 978     res =
 979 #endif
 980         XQueryTree((Display*) wxGetDisplay(), window, & root, & parent,
 981              & children, & noChildren);
 982     if (children)
 983         XFree(children);
 984     if (res)
 985         return parent;
 986     else
 987         return (Window) 0;
 988 }
 989
 990 void wxExit()
 991 {
 992     int retValue = 0;
 993     if (wxTheApp)
 994         retValue = wxTheApp->OnExit();
 995
 996     wxApp::CleanUp();
 997     /*
 998     * Exit in some platform-specific way. Not recommended that the app calls this:
 999     * only for emergencies.
1000     */
1001     exit(retValue);
1002 }
1003
1004 // Yield to other processes
1005
1006 bool wxApp::Yield(bool onlyIfNeeded)
1007 {
1008     bool s_inYield = FALSE;
1009
1010     if ( s_inYield )
1011     {
1012         if ( !onlyIfNeeded )
1013         {
1014             wxFAIL_MSG( wxT("wxYield called recursively" ) );
1015         }
1016
1017         return FALSE;
1018     }
1019
1020     s_inYield = TRUE;
1021
1022     // Make sure we have an event loop object,
1023     // or Pending/Dispatch will fail
1024     wxEventLoop* eventLoop = wxEventLoop::GetActive();
1025     wxEventLoop* newEventLoop = NULL;
1026     if (!eventLoop)
1027     {
1028         newEventLoop = new wxEventLoop;
1029         wxEventLoop::SetActive(newEventLoop);
1030     }
1031
1032     while (wxTheApp && wxTheApp->Pending())
1033         wxTheApp->Dispatch();
1034
1035 #if wxUSE_TIMER
1036     wxTimer::NotifyTimers();
1037 #endif
1038     ProcessIdle();
1039
1040     if (newEventLoop)
1041     {
1042         wxEventLoop::SetActive(NULL);
1043         delete newEventLoop;
1044     }
1045
1046     s_inYield = FALSE;
1047
1048     return TRUE;
1049 }
1050
1051 void wxApp::OnAssert(const wxChar *file, int line, const wxChar *msg)
1052 {
1053     // While the GUI isn't working that well, just print out the
1054     // message.
1055 #if 0
1056     wxAppBase::OnAssert(file, line, msg);
1057 #else
1058     wxString msg2;
1059     msg2.Printf("At file %s:%d: %s", file, line, msg);
1060     wxLogDebug(msg2);
1061 #endif
1062 }
1063