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                 win->GetClearRegion().Union( XExposeEventGetX(event), XExposeEventGetY(event),
 511                                          XExposeEventGetWidth(event), XExposeEventGetHeight(event));
 512
 513 #if !wxUSE_NANOX
 514                 XEvent tmp_event;
 515                 wxExposeInfo info;
 516                 info.window = event->xexpose.window;
 517                 info.found_non_matching = FALSE;
 518                 while (XCheckIfEvent( wxGlobalDisplay(), &tmp_event, expose_predicate, (XPointer) &info ))
 519                 {
 520                     win->GetUpdateRegion().Union( tmp_event.xexpose.x, tmp_event.xexpose.y,
 521                                                   tmp_event.xexpose.width, tmp_event.xexpose.height );
 522
 523                     win->GetClearRegion().Union( tmp_event.xexpose.x, tmp_event.xexpose.y,
 524                                                  tmp_event.xexpose.width, tmp_event.xexpose.height );
 525                 }
 526 #endif
 527
 528                 // This simplifies the expose and clear areas to simple
 529                 // rectangles.
 530                 win->GetUpdateRegion() = win->GetUpdateRegion().GetBox();
 531                 win->GetClearRegion() = win->GetClearRegion().GetBox();
 532
 533                 // If we only have one X11 window, always indicate
 534                 // that borders might have to be redrawn.
 535                 if (win->GetMainWindow() == win->GetClientWindow())
 536                     win->NeedUpdateNcAreaInIdle();
 537
 538                 // Only erase background, paint in idle time.
 539                 win->SendEraseEvents();
 540                 // win->Update();
 541             }
 542
 543             return TRUE;
 544         }
 545
 546 #if !wxUSE_NANOX
 547         case GraphicsExpose:
 548         {
 549             // wxLogDebug( "GraphicsExpose from %s", win->GetName().c_str(),
 550             //                              event->xgraphicsexpose.x, event->xgraphicsexpose.y,
 551             //                              event->xgraphicsexpose.width, event->xgraphicsexpose.height);
 552
 553             win->GetUpdateRegion().Union( event->xgraphicsexpose.x, event->xgraphicsexpose.y,
 554                                           event->xgraphicsexpose.width, event->xgraphicsexpose.height);
 555
 556             win->GetClearRegion().Union( event->xgraphicsexpose.x, event->xgraphicsexpose.y,
 557                                          event->xgraphicsexpose.width, event->xgraphicsexpose.height);
 558
 559             if (event->xgraphicsexpose.count == 0)
 560             {
 561                 // Only erase background, paint in idle time.
 562                 win->SendEraseEvents();
 563                 // win->Update();
 564             }
 565
 566             return TRUE;
 567         }
 568 #endif
 569
 570         case KeyPress:
 571         {
 572             if (!win->IsEnabled())
 573                 return FALSE;
 574
 575             wxKeyEvent keyEvent(wxEVT_KEY_DOWN);
 576             wxTranslateKeyEvent(keyEvent, win, window, event);
 577
 578             // wxLogDebug( "OnKey from %s", win->GetName().c_str() );
 579
 580             // We didn't process wxEVT_KEY_DOWN, so send wxEVT_CHAR
 581             if (win->GetEventHandler()->ProcessEvent( keyEvent ))
 582                 return TRUE;
 583
 584             keyEvent.SetEventType(wxEVT_CHAR);
 585             if (win->GetEventHandler()->ProcessEvent( keyEvent ))
 586                 return TRUE;
 587
 588             if ( (keyEvent.m_keyCode == WXK_TAB) &&
 589                  win->GetParent() && (win->GetParent()->HasFlag( wxTAB_TRAVERSAL)) )
 590             {
 591                 wxNavigationKeyEvent new_event;
 592                 new_event.SetEventObject( win->GetParent() );
 593                 /* GDK reports GDK_ISO_Left_Tab for SHIFT-TAB */
 594                 new_event.SetDirection( (keyEvent.m_keyCode == WXK_TAB) );
 595                 /* CTRL-TAB changes the (parent) window, i.e. switch notebook page */
 596                 new_event.SetWindowChange( keyEvent.ControlDown() );
 597                 new_event.SetCurrentFocus( win );
 598                 return win->GetParent()->GetEventHandler()->ProcessEvent( new_event );
 599             }
 600
 601             return FALSE;
 602         }
 603         case KeyRelease:
 604         {
 605             if (!win->IsEnabled())
 606                 return FALSE;
 607
 608             wxKeyEvent keyEvent(wxEVT_KEY_UP);
 609             wxTranslateKeyEvent(keyEvent, win, window, event);
 610
 611             return win->GetEventHandler()->ProcessEvent( keyEvent );
 612         }
 613         case ConfigureNotify:
 614         {
 615 #if wxUSE_NANOX
 616             if (event->update.utype == GR_UPDATE_SIZE)
 617 #endif
 618             {
 619                 if (win->IsTopLevel())
 620                 {
 621                     wxTopLevelWindow *tlw = (wxTopLevelWindow*) win;
 622                     tlw->SetConfigureGeometry( XConfigureEventGetX(event), XConfigureEventGetY(event),
 623                         XConfigureEventGetWidth(event), XConfigureEventGetHeight(event) );
 624                 }
 625
 626                 if (win->IsTopLevel() && win->IsShown())
 627                 {
 628                     wxTopLevelWindowX11 *tlw = (wxTopLevelWindowX11 *) win;
 629                     tlw->SetNeedResizeInIdle();
 630                 }
 631                 else
 632                 {
 633                     wxSizeEvent sizeEvent( wxSize(XConfigureEventGetWidth(event), XConfigureEventGetHeight(event)), win->GetId() );
 634                     sizeEvent.SetEventObject( win );
 635
 636                     return win->GetEventHandler()->ProcessEvent( sizeEvent );
 637                 }
 638             }
 639             return FALSE;
 640             break;
 641         }
 642 #if !wxUSE_NANOX
 643         case PropertyNotify:
 644         {
 645             //wxLogDebug("PropertyNotify: %s", windowClass.c_str());
 646             return HandlePropertyChange(_event);
 647         }
 648         case ClientMessage:
 649         {
 650             if (!win->IsEnabled())
 651                 return FALSE;
 652
 653             Atom wm_delete_window = XInternAtom(wxGlobalDisplay(), "WM_DELETE_WINDOW", True);
 654             Atom wm_protocols = XInternAtom(wxGlobalDisplay(), "WM_PROTOCOLS", True);
 655
 656             if (event->xclient.message_type == wm_protocols)
 657             {
 658                 if ((Atom) (event->xclient.data.l[0]) == wm_delete_window)
 659                 {
 660                     win->Close(FALSE);
 661                     return TRUE;
 662                 }
 663             }
 664             return FALSE;
 665         }
 666 #if 0
 667         case DestroyNotify:
 668         {
 669             printf( "destroy from %s\n", win->GetName().c_str() );
 670             break;
 671         }
 672         case CreateNotify:
 673         {
 674             printf( "create from %s\n", win->GetName().c_str() );
 675             break;
 676         }
 677         case MapRequest:
 678         {
 679             printf( "map request from %s\n", win->GetName().c_str() );
 680             break;
 681         }
 682         case ResizeRequest:
 683         {
 684             printf( "resize request from %s\n", win->GetName().c_str() );
 685
 686             Display *disp = (Display*) wxGetDisplay();
 687             XEvent report;
 688
 689             //  to avoid flicker
 690             report = * event;
 691             while( XCheckTypedWindowEvent (disp, actualWindow, ResizeRequest, &report));
 692
 693             wxSize sz = win->GetSize();
 694             wxSizeEvent sizeEvent(sz, win->GetId());
 695             sizeEvent.SetEventObject(win);
 696
 697             return win->GetEventHandler()->ProcessEvent( sizeEvent );
 698         }
 699 #endif
 700 #endif
 701 #if wxUSE_NANOX
 702         case GR_EVENT_TYPE_CLOSE_REQ:
 703         {
 704             if (win)
 705             {
 706                 win->Close(FALSE);
 707                 return TRUE;
 708             }
 709             return FALSE;
 710             break;
 711         }
 712 #endif
 713         case EnterNotify:
 714         case LeaveNotify:
 715         case ButtonPress:
 716         case ButtonRelease:
 717         case MotionNotify:
 718         {
 719             if (!win->IsEnabled())
 720                 return FALSE;
 721
 722             // Here we check if the top level window is
 723             // disabled, which is one aspect of modality.
 724             wxWindow *tlw = win;
 725             while (tlw && !tlw->IsTopLevel())
 726                 tlw = tlw->GetParent();
 727             if (tlw && !tlw->IsEnabled())
 728                 return FALSE;
 729
 730             if (event->type == ButtonPress)
 731             {
 732                 if ((win != wxWindow::FindFocus()) && win->AcceptsFocus())
 733                 {
 734                     // This might actually be done in wxWindow::SetFocus()
 735                     // and not here. TODO.
 736                     g_prevFocus = wxWindow::FindFocus();
 737                     g_nextFocus = win;
 738
 739                     win->SetFocus();
 740                 }
 741             }
 742
 743 #if !wxUSE_NANOX
 744             if (event->type == LeaveNotify || event->type == EnterNotify)
 745             {
 746                 // Throw out NotifyGrab and NotifyUngrab
 747                 if (event->xcrossing.mode != NotifyNormal)
 748                     return FALSE;
 749             }
 750 #endif
 751             wxMouseEvent wxevent;
 752             wxTranslateMouseEvent(wxevent, win, window, event);
 753             return win->GetEventHandler()->ProcessEvent( wxevent );
 754         }
 755         case FocusIn:
 756             {
 757 #if !wxUSE_NANOX
 758                 if ((event->xfocus.detail != NotifyPointer) &&
 759                     (event->xfocus.mode == NotifyNormal))
 760 #endif
 761                 {
 762                     // wxLogDebug( "FocusIn from %s of type %s", win->GetName().c_str(), win->GetClassInfo()->GetClassName() );
 763
 764                     wxFocusEvent focusEvent(wxEVT_SET_FOCUS, win->GetId());
 765                     focusEvent.SetEventObject(win);
 766                     focusEvent.SetWindow( g_prevFocus );
 767                     g_prevFocus = NULL;
 768
 769                     return win->GetEventHandler()->ProcessEvent(focusEvent);
 770                 }
 771                 return FALSE;
 772                 break;
 773             }
 774         case FocusOut:
 775             {
 776 #if !wxUSE_NANOX
 777                 if ((event->xfocus.detail != NotifyPointer) &&
 778                     (event->xfocus.mode == NotifyNormal))
 779 #endif
 780                 {
 781                     // wxLogDebug( "FocusOut from %s of type %s", win->GetName().c_str(), win->GetClassInfo()->GetClassName() );
 782
 783                     wxFocusEvent focusEvent(wxEVT_KILL_FOCUS, win->GetId());
 784                     focusEvent.SetEventObject(win);
 785                     focusEvent.SetWindow( g_nextFocus );
 786                     g_nextFocus = NULL;
 787                     return win->GetEventHandler()->ProcessEvent(focusEvent);
 788                 }
 789                 return FALSE;
 790                 break;
 791             }
 792         default:
 793         {
 794 #ifdef __WXDEBUG__
 795             //wxString eventName = wxGetXEventName(XEvent& event);
 796             //wxLogDebug(wxT("Event %s not handled"), eventName.c_str());
 797 #endif
 798             return FALSE;
 799             break;
 800         }
 801     }
 802     return FALSE;
 803 }
 804
 805 // Returns TRUE if more time is needed.
 806 // Note that this duplicates wxEventLoopImpl::SendIdleEvent
 807 // but ProcessIdle may be needed by apps, so is kept.
 808 bool wxApp::ProcessIdle()
 809 {
 810     wxIdleEvent event;
 811     event.SetEventObject(this);
 812     ProcessEvent(event);
 813
 814     return event.MoreRequested();
 815 }
 816
 817 void wxApp::ExitMainLoop()
 818 {
 819     if (m_mainLoop)
 820         m_mainLoop->Exit(0);
 821 }
 822
 823 // Is a message/event pending?
 824 bool wxApp::Pending()
 825 {
 826     return wxEventLoop::GetActive()->Pending();
 827 }
 828
 829 // Dispatch a message.
 830 void wxApp::Dispatch()
 831 {
 832     wxEventLoop::GetActive()->Dispatch();
 833 }
 834
 835 // This should be redefined in a derived class for
 836 // handling property change events for XAtom IPC.
 837 bool wxApp::HandlePropertyChange(WXEvent *event)
 838 {
 839     // by default do nothing special
 840     // TODO: what to do for X11
 841     // XtDispatchEvent((XEvent*) event);
 842     return FALSE;
 843 }
 844
 845 void wxApp::OnIdle(wxIdleEvent& event)
 846 {
 847     static bool s_inOnIdle = FALSE;
 848
 849     // Avoid recursion (via ProcessEvent default case)
 850     if (s_inOnIdle)
 851         return;
 852
 853     s_inOnIdle = TRUE;
 854
 855     // Resend in the main thread events which have been prepared in other
 856     // threads
 857     ProcessPendingEvents();
 858
 859     // 'Garbage' collection of windows deleted with Close()
 860     DeletePendingObjects();
 861
 862     // Send OnIdle events to all windows
 863     bool needMore = SendIdleEvents();
 864
 865     if (needMore)
 866         event.RequestMore(TRUE);
 867
 868     s_inOnIdle = FALSE;
 869 }
 870
 871 void wxWakeUpIdle()
 872 {
 873     // **** please implement me! ****
 874     // Wake up the idle handler processor, even if it is in another thread...
 875 }
 876
 877
 878 // Send idle event to all top-level windows
 879 bool wxApp::SendIdleEvents()
 880 {
 881     bool needMore = FALSE;
 882
 883     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
 884     while (node)
 885     {
 886         wxWindow* win = node->GetData();
 887         if (SendIdleEvents(win))
 888             needMore = TRUE;
 889         node = node->GetNext();
 890     }
 891
 892     return needMore;
 893 }
 894
 895 // Send idle event to window and all subwindows
 896 bool wxApp::SendIdleEvents(wxWindow* win)
 897 {
 898     bool needMore = FALSE;
 899
 900     wxIdleEvent event;
 901     event.SetEventObject(win);
 902
 903     win->GetEventHandler()->ProcessEvent(event);
 904
 905     win->OnInternalIdle();
 906
 907     if (event.MoreRequested())
 908         needMore = TRUE;
 909
 910     wxNode* node = win->GetChildren().First();
 911     while (node)
 912     {
 913         wxWindow* win = (wxWindow*) node->Data();
 914         if (SendIdleEvents(win))
 915             needMore = TRUE;
 916
 917         node = node->Next();
 918     }
 919
 920     return needMore;
 921 }
 922
 923 void wxApp::DeletePendingObjects()
 924 {
 925     wxNode *node = wxPendingDelete.First();
 926     while (node)
 927     {
 928         wxObject *obj = (wxObject *)node->Data();
 929
 930         delete obj;
 931
 932         if (wxPendingDelete.Member(obj))
 933             delete node;
 934
 935         // Deleting one object may have deleted other pending
 936         // objects, so start from beginning of list again.
 937         node = wxPendingDelete.First();
 938     }
 939 }
 940
 941 // Create display, and other initialization
 942 bool wxApp::OnInitGui()
 943 {
 944     // Eventually this line will be removed, but for
 945     // now we don't want to try popping up a dialog
 946     // for error messages.
 947     delete wxLog::SetActiveTarget(new wxLogStderr);
 948
 949     if (!wxAppBase::OnInitGui())
 950     return FALSE;
 951
 952     GetMainColormap( wxApp::GetDisplay() );
 953
 954     m_maxRequestSize = XMaxRequestSize( (Display*) wxApp::GetDisplay() );
 955
 956     return TRUE;
 957 }
 958
 959 WXColormap wxApp::GetMainColormap(WXDisplay* display)
 960 {
 961     if (!display) /* Must be called first with non-NULL display */
 962         return m_mainColormap;
 963
 964     int defaultScreen = DefaultScreen((Display*) display);
 965     Screen* screen = XScreenOfDisplay((Display*) display, defaultScreen);
 966
 967     Colormap c = DefaultColormapOfScreen(screen);
 968
 969     if (!m_mainColormap)
 970         m_mainColormap = (WXColormap) c;
 971
 972     return (WXColormap) c;
 973 }
 974
 975 Window wxGetWindowParent(Window window)
 976 {
 977     wxASSERT_MSG( window, "invalid window" );
 978
 979     return (Window) 0;
 980
 981     Window parent, root = 0;
 982 #if wxUSE_NANOX
 983     int noChildren = 0;
 984 #else
 985     unsigned int noChildren = 0;
 986 #endif
 987     Window* children = NULL;
 988
 989     // #define XQueryTree(d,w,r,p,c,nc)     GrQueryTree(w,p,c,nc)
 990     int res = 1;
 991 #if !wxUSE_NANOX
 992     res =
 993 #endif
 994         XQueryTree((Display*) wxGetDisplay(), window, & root, & parent,
 995              & children, & noChildren);
 996     if (children)
 997         XFree(children);
 998     if (res)
 999         return parent;
1000     else
1001         return (Window) 0;
1002 }
1003
1004 void wxExit()
1005 {
1006     int retValue = 0;
1007     if (wxTheApp)
1008         retValue = wxTheApp->OnExit();
1009
1010     wxApp::CleanUp();
1011     /*
1012     * Exit in some platform-specific way. Not recommended that the app calls this:
1013     * only for emergencies.
1014     */
1015     exit(retValue);
1016 }
1017
1018 // Yield to other processes
1019
1020 bool wxApp::Yield(bool onlyIfNeeded)
1021 {
1022     bool s_inYield = FALSE;
1023
1024     if ( s_inYield )
1025     {
1026         if ( !onlyIfNeeded )
1027         {
1028             wxFAIL_MSG( wxT("wxYield called recursively" ) );
1029         }
1030
1031         return FALSE;
1032     }
1033
1034     s_inYield = TRUE;
1035
1036     // Make sure we have an event loop object,
1037     // or Pending/Dispatch will fail
1038     wxEventLoop* eventLoop = wxEventLoop::GetActive();
1039     wxEventLoop* newEventLoop = NULL;
1040     if (!eventLoop)
1041     {
1042         newEventLoop = new wxEventLoop;
1043         wxEventLoop::SetActive(newEventLoop);
1044     }
1045
1046     while (wxTheApp && wxTheApp->Pending())
1047         wxTheApp->Dispatch();
1048
1049 #if wxUSE_TIMER
1050     wxTimer::NotifyTimers();
1051 #endif
1052     ProcessIdle();
1053
1054     if (newEventLoop)
1055     {
1056         wxEventLoop::SetActive(NULL);
1057         delete newEventLoop;
1058     }
1059
1060     s_inYield = FALSE;
1061
1062     return TRUE;
1063 }
1064
1065 void wxApp::OnAssert(const wxChar *file, int line, const wxChar *msg)
1066 {
1067     // While the GUI isn't working that well, just print out the
1068     // message.
1069 #if 0
1070     wxAppBase::OnAssert(file, line, msg);
1071 #else
1072     wxString msg2;
1073     msg2.Printf("At file %s:%d: %s", file, line, msg);
1074     wxLogDebug(msg2);
1075 #endif
1076 }
1077