src/gtk1/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Julian Smart
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11     #pragma implementation "app.h"
  12 #endif
  13
  14 #ifdef __VMS
  15 #include <vms_jackets.h>
  16 #undef ConnectionNumber
  17 #endif
  18
  19 #include "wx/app.h"
  20 #include "wx/gdicmn.h"
  21 #include "wx/utils.h"
  22 #include "wx/intl.h"
  23 #include "wx/log.h"
  24 #include "wx/memory.h"
  25 #include "wx/font.h"
  26 #include "wx/settings.h"
  27 #include "wx/dialog.h"
  28 #include "wx/msgdlg.h"
  29 #include "wx/file.h"
  30 #include "wx/filename.h"
  31 #include "wx/module.h"
  32 #include "wx/image.h"
  33
  34 #ifdef __WXUNIVERSAL__
  35     #include "wx/univ/theme.h"
  36     #include "wx/univ/renderer.h"
  37 #endif
  38
  39 #if wxUSE_THREADS
  40     #include "wx/thread.h"
  41 #endif
  42
  43 #include <unistd.h>
  44
  45 #ifdef HAVE_POLL
  46     #if defined(__VMS)
  47         #include <poll.h>
  48     #else
  49         // bug in the OpenBSD headers: at least in 3.1 there is no extern "C"
  50         // in neither poll.h nor sys/poll.h which results in link errors later
  51         #ifdef __OPENBSD__
  52             extern "C"
  53             {
  54         #endif
  55
  56         #include <sys/poll.h>
  57
  58         #ifdef __OPENBSD__
  59             };
  60         #endif
  61     #endif // platform
  62 #else // !HAVE_POLL
  63     // we implement poll() ourselves using select() which is supposed exist in
  64     // all modern Unices
  65     #include <sys/types.h>
  66     #include <sys/time.h>
  67     #include <unistd.h>
  68 #endif // HAVE_POLL/!HAVE_POLL
  69
  70 #include "wx/gtk/win_gtk.h"
  71
  72 #include <gtk/gtk.h>
  73
  74
  75 //-----------------------------------------------------------------------------
  76 // global data
  77 //-----------------------------------------------------------------------------
  78
  79 bool   g_mainThreadLocked = FALSE;
  80 gint   g_pendingTag = 0;
  81
  82 static GtkWidget *gs_RootWindow = (GtkWidget*) NULL;
  83
  84 //-----------------------------------------------------------------------------
  85 // idle system
  86 //-----------------------------------------------------------------------------
  87
  88 extern bool g_isIdle;
  89
  90 void wxapp_install_idle_handler();
  91
  92 //-----------------------------------------------------------------------------
  93 // wxYield
  94 //-----------------------------------------------------------------------------
  95
  96 // not static because used by textctrl.cpp
  97 //
  98 // MT-FIXME
  99 bool wxIsInsideYield = FALSE;
 100
 101 bool wxApp::Yield(bool onlyIfNeeded)
 102 {
 103     if ( wxIsInsideYield )
 104     {
 105         if ( !onlyIfNeeded )
 106         {
 107             wxFAIL_MSG( wxT("wxYield called recursively" ) );
 108         }
 109
 110         return FALSE;
 111     }
 112
 113 #if wxUSE_THREADS
 114     if ( !wxThread::IsMain() )
 115     {
 116         // can't call gtk_main_iteration() from other threads like this
 117         return TRUE;
 118     }
 119 #endif // wxUSE_THREADS
 120
 121     wxIsInsideYield = TRUE;
 122
 123     if (!g_isIdle)
 124     {
 125         // We need to remove idle callbacks or the loop will
 126         // never finish.
 127         gtk_idle_remove( m_idleTag );
 128         m_idleTag = 0;
 129         g_isIdle = TRUE;
 130     }
 131
 132     // disable log flushing from here because a call to wxYield() shouldn't
 133     // normally result in message boxes popping up &c
 134     wxLog::Suspend();
 135
 136     while (gtk_events_pending())
 137         gtk_main_iteration();
 138
 139     // It's necessary to call ProcessIdle() to update the frames sizes which
 140     // might have been changed (it also will update other things set from
 141     // OnUpdateUI() which is a nice (and desired) side effect). But we
 142     // call ProcessIdle() only once since this is not meant for longish
 143     // background jobs (controlled by wxIdleEvent::RequestMore() and the
 144     // return value of Processidle().
 145     ProcessIdle();
 146
 147     // let the logs be flashed again
 148     wxLog::Resume();
 149
 150     wxIsInsideYield = FALSE;
 151
 152     return TRUE;
 153 }
 154
 155 //-----------------------------------------------------------------------------
 156 // wxWakeUpIdle
 157 //-----------------------------------------------------------------------------
 158
 159 void wxApp::WakeUpIdle()
 160 {
 161 #if wxUSE_THREADS
 162     if (!wxThread::IsMain())
 163         wxMutexGuiEnter();
 164 #endif
 165
 166     if (g_isIdle)
 167         wxapp_install_idle_handler();
 168
 169 #if wxUSE_THREADS
 170     if (!wxThread::IsMain())
 171         wxMutexGuiLeave();
 172 #endif
 173 }
 174
 175 //-----------------------------------------------------------------------------
 176 // local functions
 177 //-----------------------------------------------------------------------------
 178
 179 // the callback functions must be extern "C" to comply with GTK+ declarations
 180 extern "C"
 181 {
 182
 183 static gint wxapp_pending_callback( gpointer WXUNUSED(data) )
 184 {
 185     if (!wxTheApp) return TRUE;
 186
 187     // When getting called from GDK's time-out handler
 188     // we are no longer within GDK's grab on the GUI
 189     // thread so we must lock it here ourselves.
 190     gdk_threads_enter();
 191
 192     // Sent idle event to all who request them.
 193     wxTheApp->ProcessPendingEvents();
 194
 195     g_pendingTag = 0;
 196
 197     // Flush the logged messages if any.
 198 #if wxUSE_LOG
 199     wxLog::FlushActive();
 200 #endif // wxUSE_LOG
 201
 202     // Release lock again
 203     gdk_threads_leave();
 204
 205     // Return FALSE to indicate that no more idle events are
 206     // to be sent (single shot instead of continuous stream)
 207     return FALSE;
 208 }
 209
 210 static gint wxapp_idle_callback( gpointer WXUNUSED(data) )
 211 {
 212     if (!wxTheApp)
 213         return TRUE;
 214
 215 #ifdef __WXDEBUG__
 216     // don't generate the idle events while the assert modal dialog is shown,
 217     // this completely confuses the apps which don't expect to be reentered
 218     // from some safely-looking functions
 219     if ( wxTheApp->IsInAssert() )
 220     {
 221         // But repaint the assertion message if necessary
 222         if (wxTopLevelWindows.GetCount() > 0)
 223         {
 224             wxWindow* win = (wxWindow*) wxTopLevelWindows.GetLast()->GetData();
 225 #ifdef __WXGTK20__
 226             if (win->IsKindOf(CLASSINFO(wxMessageDialog)))
 227 #else
 228             if (win->IsKindOf(CLASSINFO(wxGenericMessageDialog)))
 229 #endif
 230                 win->OnInternalIdle();
 231         }
 232         return TRUE;
 233     }
 234 #endif // __WXDEBUG__
 235
 236     // When getting called from GDK's time-out handler
 237     // we are no longer within GDK's grab on the GUI
 238     // thread so we must lock it here ourselves.
 239     gdk_threads_enter();
 240
 241     // Indicate that we are now in idle mode and event handlers
 242     // will have to reinstall the idle handler again.
 243     g_isIdle = TRUE;
 244     wxTheApp->m_idleTag = 0;
 245
 246     // Send idle event to all who request them as long as
 247     // no events have popped up in the event queue.
 248     while (wxTheApp->ProcessIdle() && (gtk_events_pending() == 0))
 249         ;
 250
 251     // Release lock again
 252     gdk_threads_leave();
 253
 254     // Return FALSE to indicate that no more idle events are
 255     // to be sent (single shot instead of continuous stream).
 256     return FALSE;
 257 }
 258
 259 #if wxUSE_THREADS
 260
 261 #ifdef HAVE_POLL
 262     #define wxPoll poll
 263     #define wxPollFd pollfd
 264 #else // !HAVE_POLL
 265
 266 typedef GPollFD wxPollFd;
 267
 268 int wxPoll(wxPollFd *ufds, unsigned int nfds, int timeout)
 269 {
 270     // convert timeout from ms to struct timeval (s/us)
 271     timeval tv_timeout;
 272     tv_timeout.tv_sec = timeout/1000;
 273     tv_timeout.tv_usec = (timeout%1000)*1000;
 274
 275     // remember the highest fd used here
 276     int fdMax = -1;
 277
 278     // and fill the sets for select()
 279     fd_set readfds;
 280     fd_set writefds;
 281     fd_set exceptfds;
 282     FD_ZERO(&readfds);
 283     FD_ZERO(&writefds);
 284     FD_ZERO(&exceptfds);
 285
 286     unsigned int i;
 287     for ( i = 0; i < nfds; i++ )
 288     {
 289         wxASSERT_MSG( ufds[i].fd < FD_SETSIZE, _T("fd out of range") );
 290
 291         if ( ufds[i].events & G_IO_IN )
 292             FD_SET(ufds[i].fd, &readfds);
 293
 294         if ( ufds[i].events & G_IO_PRI )
 295             FD_SET(ufds[i].fd, &exceptfds);
 296
 297         if ( ufds[i].events & G_IO_OUT )
 298             FD_SET(ufds[i].fd, &writefds);
 299
 300         if ( ufds[i].fd > fdMax )
 301             fdMax = ufds[i].fd;
 302     }
 303
 304     fdMax++;
 305     int res = select(fdMax, &readfds, &writefds, &exceptfds, &tv_timeout);
 306
 307     // translate the results back
 308     for ( i = 0; i < nfds; i++ )
 309     {
 310         ufds[i].revents = 0;
 311
 312         if ( FD_ISSET(ufds[i].fd, &readfds ) )
 313             ufds[i].revents |= G_IO_IN;
 314
 315         if ( FD_ISSET(ufds[i].fd, &exceptfds ) )
 316             ufds[i].revents |= G_IO_PRI;
 317
 318         if ( FD_ISSET(ufds[i].fd, &writefds ) )
 319             ufds[i].revents |= G_IO_OUT;
 320     }
 321
 322     return res;
 323 }
 324
 325 #endif // HAVE_POLL/!HAVE_POLL
 326
 327 static gint wxapp_poll_func( GPollFD *ufds, guint nfds, gint timeout )
 328 {
 329     gdk_threads_enter();
 330
 331     wxMutexGuiLeave();
 332     g_mainThreadLocked = TRUE;
 333
 334     // we rely on the fact that glib GPollFD struct is really just pollfd but
 335     // I wonder how wise is this in the long term (VZ)
 336     gint res = wxPoll( (wxPollFd *) ufds, nfds, timeout );
 337
 338     wxMutexGuiEnter();
 339     g_mainThreadLocked = FALSE;
 340
 341     gdk_threads_leave();
 342
 343     return res;
 344 }
 345
 346 #endif // wxUSE_THREADS
 347
 348 } // extern "C"
 349
 350 void wxapp_install_idle_handler()
 351 {
 352     // GD: this assert is raised when using the thread sample (which works)
 353     //     so the test is probably not so easy. Can widget callbacks be
 354     //     triggered from child threads and, if so, for which widgets?
 355     // wxASSERT_MSG( wxThread::IsMain() || gs_WakeUpIdle, wxT("attempt to install idle handler from widget callback in child thread (should be exclusively from wxWakeUpIdle)") );
 356
 357     wxASSERT_MSG( wxTheApp->m_idleTag == 0, wxT("attempt to install idle handler twice") );
 358
 359     g_isIdle = FALSE;
 360
 361     if (g_pendingTag == 0)
 362         g_pendingTag = gtk_idle_add_priority( 900, wxapp_pending_callback, (gpointer) NULL );
 363
 364     // This routine gets called by all event handlers
 365     // indicating that the idle is over. It may also
 366     // get called from other thread for sending events
 367     // to the main thread (and processing these in
 368     // idle time). Very low priority.
 369     wxTheApp->m_idleTag = gtk_idle_add_priority( 1000, wxapp_idle_callback, (gpointer) NULL );
 370 }
 371
 372 //-----------------------------------------------------------------------------
 373 // Access to the root window global
 374 //-----------------------------------------------------------------------------
 375
 376 GtkWidget* wxGetRootWindow()
 377 {
 378     if (gs_RootWindow == NULL)
 379     {
 380         gs_RootWindow = gtk_window_new( GTK_WINDOW_TOPLEVEL );
 381         gtk_widget_realize( gs_RootWindow );
 382     }
 383     return gs_RootWindow;
 384 }
 385
 386 //-----------------------------------------------------------------------------
 387 // wxApp
 388 //-----------------------------------------------------------------------------
 389
 390 IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
 391
 392 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 393     EVT_IDLE(wxApp::OnIdle)
 394 END_EVENT_TABLE()
 395
 396 wxApp::wxApp()
 397 {
 398     m_initialized = FALSE;
 399 #ifdef __WXDEBUG__
 400     m_isInAssert = FALSE;
 401 #endif // __WXDEBUG__
 402
 403     m_idleTag = 0;
 404     wxapp_install_idle_handler();
 405
 406 #if wxUSE_THREADS
 407     g_main_set_poll_func( wxapp_poll_func );
 408 #endif
 409
 410     m_colorCube = (unsigned char*) NULL;
 411
 412     // this is NULL for a "regular" wxApp, but is set (and freed) by a wxGLApp
 413     m_glVisualInfo = (void *) NULL;
 414 }
 415
 416 wxApp::~wxApp()
 417 {
 418     if (m_idleTag) gtk_idle_remove( m_idleTag );
 419
 420     if (m_colorCube) free(m_colorCube);
 421 }
 422
 423 bool wxApp::OnInitGui()
 424 {
 425     if ( !wxAppBase::OnInitGui() )
 426         return FALSE;
 427
 428     GdkVisual *visual = gdk_visual_get_system();
 429
 430     // if this is a wxGLApp (derived from wxApp), and we've already
 431     // chosen a specific visual, then derive the GdkVisual from that
 432     if (m_glVisualInfo != NULL)
 433     {
 434 #ifdef __WXGTK20__
 435         // seems gtk_widget_set_default_visual no longer exists?
 436         GdkVisual* vis = gtk_widget_get_default_visual();
 437 #else
 438         GdkVisual* vis = gdkx_visual_get(
 439             ((XVisualInfo *) m_glVisualInfo) ->visualid );
 440         gtk_widget_set_default_visual( vis );
 441 #endif
 442
 443         GdkColormap *colormap = gdk_colormap_new( vis, FALSE );
 444         gtk_widget_set_default_colormap( colormap );
 445
 446         visual = vis;
 447     }
 448
 449     // On some machines, the default visual is just 256 colours, so
 450     // we make sure we get the best. This can sometimes be wasteful.
 451
 452     else
 453     if ((gdk_visual_get_best() != gdk_visual_get_system()) && (m_useBestVisual))
 454     {
 455 #ifdef __WXGTK20__
 456         /* seems gtk_widget_set_default_visual no longer exists? */
 457         GdkVisual* vis = gtk_widget_get_default_visual();
 458 #else
 459         GdkVisual* vis = gdk_visual_get_best();
 460         gtk_widget_set_default_visual( vis );
 461 #endif
 462
 463         GdkColormap *colormap = gdk_colormap_new( vis, FALSE );
 464         gtk_widget_set_default_colormap( colormap );
 465
 466         visual = vis;
 467     }
 468
 469     // Nothing to do for 15, 16, 24, 32 bit displays
 470     if (visual->depth > 8) return TRUE;
 471
 472     // initialize color cube for 8-bit color reduction dithering
 473
 474     GdkColormap *cmap = gtk_widget_get_default_colormap();
 475
 476     m_colorCube = (unsigned char*)malloc(32 * 32 * 32);
 477
 478     for (int r = 0; r < 32; r++)
 479     {
 480         for (int g = 0; g < 32; g++)
 481         {
 482             for (int b = 0; b < 32; b++)
 483             {
 484                 int rr = (r << 3) | (r >> 2);
 485                 int gg = (g << 3) | (g >> 2);
 486                 int bb = (b << 3) | (b >> 2);
 487
 488                 int index = -1;
 489
 490                 GdkColor *colors = cmap->colors;
 491                 if (colors)
 492                 {
 493                     int max = 3 * 65536;
 494
 495                     for (int i = 0; i < cmap->size; i++)
 496                     {
 497                         int rdiff = ((rr << 8) - colors[i].red);
 498                         int gdiff = ((gg << 8) - colors[i].green);
 499                         int bdiff = ((bb << 8) - colors[i].blue);
 500                         int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
 501                         if (sum < max)
 502                         {
 503                             index = i; max = sum;
 504                         }
 505                     }
 506                 }
 507                 else
 508                 {
 509                     // assume 8-bit true or static colors. this really exists
 510                     GdkVisual* vis = gdk_colormap_get_visual( cmap );
 511                     index = (r >> (5 - vis->red_prec)) << vis->red_shift;
 512                     index |= (g >> (5 - vis->green_prec)) << vis->green_shift;
 513                     index |= (b >> (5 - vis->blue_prec)) << vis->blue_shift;
 514                 }
 515                 m_colorCube[ (r*1024) + (g*32) + b ] = index;
 516             }
 517         }
 518     }
 519
 520     return TRUE;
 521 }
 522
 523 GdkVisual *wxApp::GetGdkVisual()
 524 {
 525     GdkVisual *visual = NULL;
 526
 527     if (m_glVisualInfo)
 528         visual = gdkx_visual_get( ((XVisualInfo *) m_glVisualInfo)->visualid );
 529     else
 530         visual = gdk_window_get_visual( wxGetRootWindow()->window );
 531
 532     wxASSERT( visual );
 533
 534     return visual;
 535 }
 536
 537 bool wxApp::ProcessIdle()
 538 {
 539     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
 540     node = wxTopLevelWindows.GetFirst();
 541     while (node)
 542     {
 543         wxWindow* win = node->GetData();
 544         CallInternalIdle( win );
 545
 546         node = node->GetNext();
 547     }
 548
 549     wxIdleEvent event;
 550     event.SetEventObject( this );
 551     ProcessEvent( event );
 552
 553     return event.MoreRequested();
 554 }
 555
 556 void wxApp::OnIdle( wxIdleEvent &event )
 557 {
 558     static bool s_inOnIdle = FALSE;
 559
 560     // Avoid recursion (via ProcessEvent default case)
 561     if (s_inOnIdle)
 562         return;
 563
 564     s_inOnIdle = TRUE;
 565
 566     // Resend in the main thread events which have been prepared in other
 567     // threads
 568     ProcessPendingEvents();
 569
 570     // 'Garbage' collection of windows deleted with Close()
 571     DeletePendingObjects();
 572
 573     // Send OnIdle events to all windows
 574     bool needMore = SendIdleEvents();
 575
 576     if (needMore)
 577         event.RequestMore(TRUE);
 578
 579     s_inOnIdle = FALSE;
 580 }
 581
 582 bool wxApp::SendIdleEvents()
 583 {
 584     bool needMore = FALSE;
 585
 586     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
 587     while (node)
 588     {
 589         wxWindow* win = node->GetData();
 590         if (SendIdleEvents(win))
 591             needMore = TRUE;
 592
 593         node = node->GetNext();
 594     }
 595
 596     return needMore;
 597 }
 598
 599 bool wxApp::CallInternalIdle( wxWindow* win )
 600 {
 601     win->OnInternalIdle();
 602
 603     wxWindowList::Node  *node = win->GetChildren().GetFirst();
 604     while (node)
 605     {
 606         wxWindow    *win = node->GetData();
 607
 608         CallInternalIdle( win );
 609         node = node->GetNext();
 610     }
 611
 612     return TRUE;
 613 }
 614
 615 bool wxApp::SendIdleEvents( wxWindow* win )
 616 {
 617     bool needMore = FALSE;
 618
 619     wxIdleEvent event;
 620     event.SetEventObject(win);
 621
 622     win->GetEventHandler()->ProcessEvent(event);
 623
 624     if (event.MoreRequested())
 625         needMore = TRUE;
 626
 627     wxWindowList::Node  *node = win->GetChildren().GetFirst();
 628     while (node)
 629     {
 630         wxWindow    *win = node->GetData();
 631
 632         if (SendIdleEvents(win))
 633             needMore = TRUE;
 634         node = node->GetNext();
 635     }
 636
 637     return needMore;
 638 }
 639
 640 int wxApp::MainLoop()
 641 {
 642     gtk_main();
 643     return 0;
 644 }
 645
 646 void wxApp::Exit()
 647 {
 648     // VZ: no idea why is it different from ExitMainLoop() but this is what
 649     //     wxExit() used to do
 650     gtk_main_quit();
 651 }
 652
 653 void wxApp::ExitMainLoop()
 654 {
 655     if (gtk_main_level() > 0)
 656         gtk_main_quit();
 657 }
 658
 659 bool wxApp::Initialized()
 660 {
 661     return m_initialized;
 662 }
 663
 664 bool wxApp::Pending()
 665 {
 666     return (gtk_events_pending() > 0);
 667 }
 668
 669 void wxApp::Dispatch()
 670 {
 671     gtk_main_iteration();
 672 }
 673
 674 void wxApp::DeletePendingObjects()
 675 {
 676     wxNode *node = wxPendingDelete.GetFirst();
 677     while (node)
 678     {
 679         wxObject *obj = (wxObject *)node->GetData();
 680
 681         delete obj;
 682
 683         if (wxPendingDelete.Find(obj))
 684             delete node;
 685
 686         node = wxPendingDelete.GetFirst();
 687     }
 688 }
 689
 690 bool wxApp::Initialize()
 691 {
 692     wxClassInfo::InitializeClasses();
 693
 694     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 695     // create a module for that as it's part of the core.
 696 #if wxUSE_THREADS
 697     wxPendingEvents = new wxList();
 698     wxPendingEventsLocker = new wxCriticalSection();
 699 #endif
 700
 701     wxTheColourDatabase = new wxColourDatabase( wxKEY_STRING );
 702     wxTheColourDatabase->Initialize();
 703
 704     wxInitializeStockLists();
 705     wxInitializeStockObjects();
 706
 707     wxModule::RegisterModules();
 708     if (!wxModule::InitializeModules())
 709         return FALSE;
 710
 711 #if wxUSE_INTL
 712     wxFont::SetDefaultEncoding(wxLocale::GetSystemEncoding());
 713 #endif
 714
 715     return TRUE;
 716 }
 717
 718 void wxApp::CleanUp()
 719 {
 720     wxModule::CleanUpModules();
 721
 722     delete wxTheColourDatabase;
 723     wxTheColourDatabase = (wxColourDatabase*) NULL;
 724
 725     wxDeleteStockObjects();
 726
 727     wxDeleteStockLists();
 728
 729     delete wxTheApp;
 730     wxTheApp = (wxApp*) NULL;
 731
 732     wxClassInfo::CleanUpClasses();
 733
 734 #if wxUSE_THREADS
 735     delete wxPendingEvents;
 736     wxPendingEvents = NULL;
 737     delete wxPendingEventsLocker;
 738     wxPendingEventsLocker = NULL;
 739 #endif
 740
 741     // check for memory leaks
 742 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 743     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 744     {
 745         wxLogDebug(wxT("There were memory leaks.\n"));
 746         wxDebugContext::Dump();
 747         wxDebugContext::PrintStatistics();
 748     }
 749 #endif // Debug
 750
 751 #if wxUSE_LOG
 752     // do this as the very last thing because everything else can log messages
 753     wxLog::DontCreateOnDemand();
 754
 755     wxLog *oldLog = wxLog::SetActiveTarget( (wxLog*) NULL );
 756     if (oldLog)
 757         delete oldLog;
 758 #endif // wxUSE_LOG
 759 }
 760
 761 //-----------------------------------------------------------------------------
 762 // wxEntry
 763 //-----------------------------------------------------------------------------
 764
 765 // NB: argc and argv may be changed here, pass by reference!
 766 int wxEntryStart( int& argc, char *argv[] )
 767 {
 768 #if wxUSE_THREADS
 769     // GTK 1.2 up to version 1.2.3 has broken threads
 770     if ((gtk_major_version == 1) &&
 771         (gtk_minor_version == 2) &&
 772         (gtk_micro_version < 4))
 773     {
 774         printf( "wxWindows warning: GUI threading disabled due to outdated GTK version\n" );
 775     }
 776     else
 777     {
 778         g_thread_init(NULL);
 779     }
 780 #endif
 781
 782     gtk_set_locale();
 783
 784     // We should have the wxUSE_WCHAR_T test on the _outside_
 785 #if wxUSE_WCHAR_T
 786 #if defined(__WXGTK20__)
 787     // gtk+ 2.0 supports Unicode through UTF-8 strings
 788     wxConvCurrent = &wxConvUTF8;
 789 #else
 790     if (!wxOKlibc()) wxConvCurrent = &wxConvLocal;
 791 #endif
 792 #else
 793     if (!wxOKlibc()) wxConvCurrent = (wxMBConv*) NULL;
 794 #endif
 795
 796     gtk_init( &argc, &argv );
 797
 798     /* we can not enter threads before gtk_init is done */
 799     gdk_threads_enter();
 800
 801     wxSetDetectableAutoRepeat( TRUE );
 802
 803     if (!wxApp::Initialize())
 804     {
 805         gdk_threads_leave();
 806         return -1;
 807     }
 808
 809     return 0;
 810 }
 811
 812
 813 int wxEntryInitGui()
 814 {
 815     int retValue = 0;
 816
 817     if ( !wxTheApp->OnInitGui() )
 818         retValue = -1;
 819
 820     wxGetRootWindow();
 821
 822     return retValue;
 823 }
 824
 825
 826 void wxEntryCleanup()
 827 {
 828 #if wxUSE_LOG
 829     // flush the logged messages if any
 830     wxLog *log = wxLog::GetActiveTarget();
 831     if (log != NULL && log->HasPendingMessages())
 832         log->Flush();
 833
 834     // continuing to use user defined log target is unsafe from now on because
 835     // some resources may be already unavailable, so replace it by something
 836     // more safe
 837     wxLog *oldlog = wxLog::SetActiveTarget(new wxLogStderr);
 838     if ( oldlog )
 839         delete oldlog;
 840 #endif // wxUSE_LOG
 841
 842     wxApp::CleanUp();
 843
 844     gdk_threads_leave();
 845 }
 846
 847
 848 int wxEntry( int argc, char *argv[] )
 849 {
 850 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 851     // This seems to be necessary since there are 'rogue'
 852     // objects present at this point (perhaps global objects?)
 853     // Setting a checkpoint will ignore them as far as the
 854     // memory checking facility is concerned.
 855     // Of course you may argue that memory allocated in globals should be
 856     // checked, but this is a reasonable compromise.
 857     wxDebugContext::SetCheckpoint();
 858 #endif
 859     int err = wxEntryStart(argc, argv);
 860     if (err)
 861         return err;
 862
 863     if (!wxTheApp)
 864     {
 865         wxCHECK_MSG( wxApp::GetInitializerFunction(), -1,
 866                      wxT("wxWindows error: No initializer - use IMPLEMENT_APP macro.\n") );
 867
 868         wxAppInitializerFunction app_ini = wxApp::GetInitializerFunction();
 869
 870         wxObject *test_app = app_ini();
 871
 872         wxTheApp = (wxApp*) test_app;
 873     }
 874
 875     wxCHECK_MSG( wxTheApp, -1, wxT("wxWindows error: no application object") );
 876
 877     wxTheApp->argc = argc;
 878 #if wxUSE_UNICODE
 879     wxTheApp->argv = new wxChar*[argc+1];
 880     int mb_argc = 0;
 881     while (mb_argc < argc)
 882     {
 883         wxTheApp->argv[mb_argc] = wxStrdup(wxConvLibc.cMB2WX(argv[mb_argc]));
 884         mb_argc++;
 885     }
 886     wxTheApp->argv[mb_argc] = (wxChar *)NULL;
 887 #else
 888     wxTheApp->argv = argv;
 889 #endif
 890
 891     if (wxTheApp->argc > 0)
 892     {
 893         wxFileName fname( wxTheApp->argv[0] );
 894         wxTheApp->SetAppName( fname.GetName() );
 895     }
 896
 897     int retValue;
 898     retValue = wxEntryInitGui();
 899
 900     // Here frames insert themselves automatically into wxTopLevelWindows by
 901     // getting created in OnInit().
 902     if ( retValue == 0 )
 903     {
 904         if ( !wxTheApp->OnInit() )
 905             retValue = -1;
 906     }
 907
 908     if ( retValue == 0 )
 909     {
 910         // Delete pending toplevel windows
 911         wxTheApp->DeletePendingObjects();
 912
 913         // When is the app not initialized ?
 914         wxTheApp->m_initialized = TRUE;
 915
 916         if (wxTheApp->Initialized())
 917         {
 918             wxTheApp->OnRun();
 919
 920             wxWindow *topWindow = wxTheApp->GetTopWindow();
 921
 922             // Delete all pending windows if any
 923             wxTheApp->DeletePendingObjects();
 924
 925             // Reset top window
 926             if (topWindow)
 927                 wxTheApp->SetTopWindow( (wxWindow*) NULL );
 928
 929             retValue = wxTheApp->OnExit();
 930         }
 931     }
 932
 933     wxEntryCleanup();
 934
 935     return retValue;
 936 }
 937
 938 #ifdef __WXDEBUG__
 939
 940 void wxApp::OnAssert(const wxChar *file, int line, const wxChar* cond, const wxChar *msg)
 941 {
 942     m_isInAssert = TRUE;
 943
 944     wxAppBase::OnAssert(file, line, cond, msg);
 945
 946     m_isInAssert = FALSE;
 947 }
 948
 949 #endif // __WXDEBUG__
 950