src/gtk/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 #include "wx/app.h"
  15 #include "wx/gdicmn.h"
  16 #include "wx/utils.h"
  17 #include "wx/intl.h"
  18 #include "wx/log.h"
  19 #include "wx/memory.h"
  20 #include "wx/font.h"
  21 #include "wx/settings.h"
  22 #include "wx/dialog.h"
  23
  24 #if wxUSE_WX_RESOURCES
  25     #include "wx/resource.h"
  26 #endif
  27
  28 #include "wx/module.h"
  29 #include "wx/image.h"
  30
  31 #include "wx/thread.h"
  32
  33 #include "unistd.h"
  34
  35 #include <glib.h>
  36 #include <gdk/gdk.h>
  37 #include <gtk/gtk.h>
  38
  39 #include "wx/gtk/win_gtk.h"
  40
  41 //-----------------------------------------------------------------------------
  42 // global data
  43 //-----------------------------------------------------------------------------
  44
  45 wxApp *wxTheApp = (wxApp *)  NULL;
  46 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
  47
  48 extern wxList wxPendingDelete;
  49 #if wxUSE_THREADS
  50 extern wxList *wxPendingEvents;
  51 extern wxCriticalSection *wxPendingEventsLocker;
  52 #endif
  53 extern wxResourceCache *wxTheResourceCache;
  54
  55 unsigned char g_palette[64*3] =
  56 {
  57   0x0,  0x0,  0x0,
  58   0xff, 0xff, 0xff,
  59   0xff, 0x0,  0x0,
  60   0xff, 0xff, 0x0,
  61   0x0,  0xff, 0x0,
  62   0x0,  0x0,  0xff,
  63   0x0,  0xff, 0xff,
  64   0x99, 0x99, 0x99,
  65   0xff, 0x88, 0x0,
  66   0x88, 0x0,  0x0,
  67   0x0,  0x88, 0x88,
  68   0x88, 0x88, 0x0,
  69   0xff, 0xcc, 0x97,
  70   0xbb, 0xbb, 0xbb,
  71   0x9f, 0x6b, 0x42,
  72   0x55, 0x55, 0x55,
  73   0xdd, 0xdd, 0xdd,
  74   0x77, 0x77, 0x77,
  75   0x33, 0x33, 0x33,
  76   0xcc, 0x0,  0x0,
  77   0xff, 0x44, 0x0,
  78   0xff, 0xcc, 0x0,
  79   0xcc, 0xcc, 0x0,
  80   0x60, 0x60, 0x0,
  81   0x0,  0x43, 0x0,
  82   0x0,  0x7f, 0x0,
  83   0x0,  0xcc, 0x0,
  84   0x0,  0x44, 0x44,
  85   0x0,  0x0,  0x44,
  86   0x0,  0x0,  0x88,
  87   0xef, 0xb1, 0x7b,
  88   0xdf, 0x98, 0x5f,
  89   0xbf, 0x87, 0x56,
  90   0x7f, 0x57, 0x26,
  91   0x5f, 0x39, 0xc,
  92   0x3f, 0x1c, 0x0,
  93   0x21, 0x0,  0x0,
  94   0x0,  0x43, 0x87,
  95   0x2d, 0x70, 0xaf,
  96   0x5a, 0x9e, 0xd7,
  97   0x87, 0xcc, 0xff,
  98   0xff, 0xe0, 0xba,
  99   0x21, 0x43, 0xf,
 100   0x3d, 0x5d, 0x25,
 101   0x59, 0x78, 0x3a,
 102   0x75, 0x93, 0x4f,
 103   0x91, 0xae, 0x64,
 104   0xad, 0xc8, 0x7a,
 105   0xf0, 0xa8, 0xef,
 106   0xd0, 0x88, 0xd0,
 107   0xaf, 0x66, 0xaf,
 108   0x8e, 0x44, 0x8e,
 109   0x6d, 0x22, 0x6d,
 110   0x4b, 0x0,  0x4b,
 111   0xff, 0xc0, 0xbc,
 112   0xff, 0x93, 0x91,
 113   0xff, 0x66, 0x67,
 114   0xd8, 0xf2, 0xbf,
 115   0xff, 0xc9, 0x68,
 116   0xff, 0x96, 0x67,
 117   0xa5, 0x60, 0xff,
 118   0x51, 0xff, 0x99,
 119   0x3f, 0xa5, 0x63,
 120   0x98, 0x90, 0x67
 121 };
 122
 123 //-----------------------------------------------------------------------------
 124 // local functions
 125 //-----------------------------------------------------------------------------
 126
 127 extern void wxFlushResources(void);
 128
 129 //-----------------------------------------------------------------------------
 130 // global functions
 131 //-----------------------------------------------------------------------------
 132
 133 void wxExit()
 134 {
 135     gtk_main_quit();
 136 }
 137
 138 // forward decl
 139 gint wxapp_idle_callback( gpointer WXUNUSED(data) );
 140
 141 bool wxYield()
 142 {
 143     // it's necessary to call ProcessIdle() to update the frames sizes which
 144     // might have been changed (it also will update other things set from
 145     // OnUpdateUI() which is a nice (and desired) side effect)
 146     for ( wxWindowList::Node *node = wxTopLevelWindows.GetFirst();
 147           node;
 148           node = node->GetNext() )
 149     {
 150         wxWindow *win = node->GetData();
 151         win->OnInternalIdle();
 152     }
 153
 154     // We need to temporarily remove idle callbacks or the loop will
 155     // never finish.
 156     gtk_idle_remove( wxTheApp->m_idleTag );
 157
 158     while (gtk_events_pending())
 159         gtk_main_iteration();
 160
 161     wxTheApp->m_idleTag = gtk_idle_add( wxapp_idle_callback, (gpointer) NULL );
 162     return TRUE;
 163 }
 164
 165 //-----------------------------------------------------------------------------
 166 // wxApp
 167 //-----------------------------------------------------------------------------
 168
 169 IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
 170
 171 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 172     EVT_IDLE(wxApp::OnIdle)
 173 END_EVENT_TABLE()
 174
 175 gint wxapp_idle_callback( gpointer WXUNUSED(data) )
 176 {
 177     if (wxTheApp)
 178     {
 179         while (wxTheApp->ProcessIdle())
 180         {
 181         }
 182     }
 183
 184     wxMutexGuiLeave();
 185     wxUsleep(10);
 186     wxMutexGuiEnter();
 187
 188     return TRUE;
 189 }
 190
 191 wxApp::wxApp()
 192 {
 193     wxTheApp = this;
 194
 195     m_topWindow = (wxWindow *) NULL;
 196     m_exitOnFrameDelete = TRUE;
 197
 198     m_idleTag = gtk_idle_add( wxapp_idle_callback, (gpointer) NULL );
 199
 200     m_colorCube = (unsigned char*) NULL;
 201 }
 202
 203 wxApp::~wxApp()
 204 {
 205     gtk_idle_remove( m_idleTag );
 206
 207     if (m_colorCube) free(m_colorCube);
 208 }
 209
 210 bool wxApp::OnInitGui()
 211 {
 212     /* Nothing to do for 15, 16, 24, 32 bit displays */
 213
 214     GdkVisual *visual = gdk_visual_get_system();
 215     if (visual->depth > 8) return TRUE;
 216
 217         /* this initiates the standard palette as defined by GdkImlib
 218            in the GNOME libraries. it ensures that all GNOME applications
 219            use the same 64 colormap entries on 8-bit displays so you
 220            can use several rather graphics-heavy applications at the
 221            same time.
 222            NOTE: this doesn't really seem to work this way... */
 223
 224         /*
 225         GdkColormap *cmap = gdk_colormap_new( gdk_visual_get_system(), TRUE );
 226
 227         for (int i = 0; i < 64; i++)
 228         {
 229             GdkColor col;
 230             col.red    = g_palette[i*3 + 0] << 8;
 231             col.green  = g_palette[i*3 + 1] << 8;
 232             col.blue   = g_palette[i*3 + 2] << 8;
 233             col.pixel  = 0;
 234
 235             gdk_color_alloc( cmap, &col );
 236         }
 237
 238         gtk_widget_set_default_colormap( cmap );
 239         */
 240
 241     /* initialize color cube for 8-bit color reduction dithering */
 242
 243     GdkColormap *cmap = gtk_widget_get_default_colormap();
 244
 245     m_colorCube = (unsigned char*)malloc(32 * 32 * 32);
 246
 247      for (int r = 0; r < 32; r++)
 248      {
 249         for (int g = 0; g < 32; g++)
 250         {
 251             for (int b = 0; b < 32; b++)
 252             {
 253                 int rr = (r << 3) | (r >> 2);
 254                 int gg = (g << 3) | (g >> 2);
 255                 int bb = (b << 3) | (b >> 2);
 256
 257                 GdkColor *colors = cmap->colors;
 258                 int max = 3 * (65536);
 259                 int index = -1;
 260
 261                 for (int i = 0; i < cmap->size; i++)
 262                 {
 263                     int rdiff = ((rr << 8) - colors[i].red);
 264                     int gdiff = ((gg << 8)- colors[i].green);
 265                     int bdiff = ((bb << 8)- colors[i].blue);
 266                     int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
 267                     if (sum < max) { index = i; max = sum; }
 268                 }
 269
 270                 m_colorCube[ (r*1024) + (g*32) + b ] = index;
 271             }
 272         }
 273     }
 274
 275
 276     return TRUE;
 277 }
 278
 279 bool wxApp::ProcessIdle()
 280 {
 281     wxIdleEvent event;
 282     event.SetEventObject( this );
 283     ProcessEvent( event );
 284
 285     return event.MoreRequested();
 286 }
 287
 288 void wxApp::OnIdle( wxIdleEvent &event )
 289 {
 290     static bool inOnIdle = FALSE;
 291
 292     /* Avoid recursion (via ProcessEvent default case) */
 293     if (inOnIdle)
 294         return;
 295
 296     inOnIdle = TRUE;
 297
 298 #if wxUSE_THREADS
 299     /* Resend in the main thread events which have been prepared in other
 300        threads */
 301     ProcessPendingEvents();
 302 #endif
 303
 304     /* 'Garbage' collection of windows deleted with Close(). */
 305     DeletePendingObjects();
 306
 307     /* flush the logged messages if any */
 308     wxLog *log = wxLog::GetActiveTarget();
 309     if (log != NULL && log->HasPendingMessages())
 310         log->Flush();
 311
 312     /* Send OnIdle events to all windows */
 313     bool needMore = SendIdleEvents();
 314
 315     if (needMore)
 316         event.RequestMore(TRUE);
 317
 318     inOnIdle = FALSE;
 319 }
 320
 321 bool wxApp::SendIdleEvents()
 322 {
 323     bool needMore = FALSE;
 324
 325     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
 326     while (node)
 327     {
 328         wxWindow* win = node->GetData();
 329         if (SendIdleEvents(win))
 330             needMore = TRUE;
 331         node = node->GetNext();
 332     }
 333
 334     return needMore;
 335 }
 336
 337 bool wxApp::SendIdleEvents( wxWindow* win )
 338 {
 339     bool needMore = FALSE;
 340
 341     wxIdleEvent event;
 342     event.SetEventObject(win);
 343
 344     win->OnInternalIdle();
 345
 346     win->ProcessEvent(event);
 347
 348     if (event.MoreRequested())
 349         needMore = TRUE;
 350
 351     wxNode* node = win->GetChildren().First();
 352     while (node)
 353     {
 354         wxWindow* win = (wxWindow*) node->Data();
 355         if (SendIdleEvents(win))
 356             needMore = TRUE;
 357
 358         node = node->Next();
 359     }
 360     return needMore ;
 361 }
 362
 363 int wxApp::MainLoop()
 364 {
 365     gtk_main();
 366     return 0;
 367 }
 368
 369 void wxApp::ExitMainLoop()
 370 {
 371     gtk_main_quit();
 372 }
 373
 374 bool wxApp::Initialized()
 375 {
 376     return m_initialized;
 377 }
 378
 379 bool wxApp::Pending()
 380 {
 381     return gtk_events_pending();
 382 }
 383
 384 void wxApp::Dispatch()
 385 {
 386     gtk_main_iteration();
 387 }
 388
 389 #if wxUSE_THREADS
 390 void wxApp::ProcessPendingEvents()
 391 {
 392     wxNode *node = wxPendingEvents->First();
 393     wxCriticalSectionLocker locker(*wxPendingEventsLocker);
 394
 395     while (node)
 396     {
 397         wxEvtHandler *handler = (wxEvtHandler *)node->Data();
 398
 399         handler->ProcessPendingEvents();
 400
 401         delete node;
 402
 403         node = wxPendingEvents->First();
 404     }
 405 }
 406 #endif // wxUSE_THREADS
 407
 408 void wxApp::DeletePendingObjects()
 409 {
 410     wxNode *node = wxPendingDelete.First();
 411     while (node)
 412     {
 413         wxObject *obj = (wxObject *)node->Data();
 414
 415         delete obj;
 416
 417         if (wxPendingDelete.Member(obj))
 418         delete node;
 419
 420         node = wxPendingDelete.First();
 421     }
 422 }
 423
 424 wxWindow *wxApp::GetTopWindow()
 425 {
 426     if (m_topWindow)
 427         return m_topWindow;
 428     else if (wxTopLevelWindows.GetCount() > 0)
 429         return wxTopLevelWindows.GetFirst()->GetData();
 430     else
 431         return NULL;
 432 }
 433
 434 void wxApp::SetTopWindow( wxWindow *win )
 435 {
 436     m_topWindow = win;
 437 }
 438
 439 bool wxApp::Initialize()
 440 {
 441     wxBuffer = new char[BUFSIZ + 512];
 442
 443     wxClassInfo::InitializeClasses();
 444
 445     wxSystemSettings::Init();
 446
 447     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 448     // create a module for that as it's part of the core.
 449 #if wxUSE_THREADS
 450     wxPendingEvents = new wxList();
 451     wxPendingEventsLocker = new wxCriticalSection();
 452 #endif
 453
 454 /*
 455     wxTheFontNameDirectory =  new wxFontNameDirectory;
 456     wxTheFontNameDirectory->Initialize();
 457 */
 458
 459     wxTheColourDatabase = new wxColourDatabase( wxKEY_STRING );
 460     wxTheColourDatabase->Initialize();
 461
 462     wxInitializeStockLists();
 463     wxInitializeStockObjects();
 464
 465 #if wxUSE_WX_RESOURCES
 466     wxTheResourceCache = new wxResourceCache( wxKEY_STRING );
 467
 468     wxInitializeResourceSystem();
 469 #endif
 470
 471     wxImage::InitStandardHandlers();
 472
 473     /* no global cursor under X
 474        g_globalCursor = new wxCursor; */
 475
 476     wxModule::RegisterModules();
 477     if (!wxModule::InitializeModules()) return FALSE;
 478
 479     return TRUE;
 480 }
 481
 482 void wxApp::CleanUp()
 483 {
 484     wxModule::CleanUpModules();
 485
 486 #if wxUSE_WX_RESOURCES
 487     wxFlushResources();
 488
 489     if (wxTheResourceCache)
 490         delete wxTheResourceCache;
 491     wxTheResourceCache = (wxResourceCache*) NULL;
 492
 493     wxCleanUpResourceSystem();
 494 #endif
 495
 496     if (wxTheColourDatabase)
 497         delete wxTheColourDatabase;
 498     wxTheColourDatabase = (wxColourDatabase*) NULL;
 499
 500 /*
 501     if (wxTheFontNameDirectory) delete wxTheFontNameDirectory;
 502     wxTheFontNameDirectory = (wxFontNameDirectory*) NULL;
 503 */
 504
 505     wxDeleteStockObjects();
 506
 507     wxDeleteStockLists();
 508
 509     wxImage::CleanUpHandlers();
 510
 511     delete wxTheApp;
 512     wxTheApp = (wxApp*) NULL;
 513
 514     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 515     // create a module for that as it's part of the core.
 516 #if wxUSE_THREADS
 517     delete wxPendingEvents;
 518     delete wxPendingEventsLocker;
 519 #endif
 520
 521     wxSystemSettings::Done();
 522
 523     delete[] wxBuffer;
 524
 525     wxClassInfo::CleanUpClasses();
 526
 527     // check for memory leaks
 528 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 529     if (wxDebugContext::CountObjectsLeft() > 0)
 530     {
 531         wxLogDebug("There were memory leaks.\n");
 532         wxDebugContext::Dump();
 533         wxDebugContext::PrintStatistics();
 534     }
 535 #endif // Debug
 536
 537     // do this as the very last thing because everything else can log messages
 538     wxLog::DontCreateOnDemand();
 539
 540     wxLog *oldLog = wxLog::SetActiveTarget( (wxLog*) NULL );
 541     if (oldLog)
 542         delete oldLog;
 543 }
 544
 545 wxLog *wxApp::CreateLogTarget()
 546 {
 547     return new wxLogGui;
 548 }
 549
 550 //-----------------------------------------------------------------------------
 551 // wxEntry
 552 //-----------------------------------------------------------------------------
 553
 554 int wxEntry( int argc, char *argv[] )
 555 {
 556     gtk_set_locale();
 557
 558     gtk_init( &argc, &argv );
 559
 560     if (!wxApp::Initialize())
 561         return -1;
 562
 563     if (!wxTheApp)
 564     {
 565         wxCHECK_MSG( wxApp::GetInitializerFunction(), -1,
 566                      "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
 567
 568         wxAppInitializerFunction app_ini = wxApp::GetInitializerFunction();
 569
 570         wxObject *test_app = app_ini();
 571
 572         wxTheApp = (wxApp*) test_app;
 573     }
 574
 575     wxCHECK_MSG( wxTheApp, -1, "wxWindows error: no application object" );
 576
 577     wxTheApp->argc = argc;
 578     wxTheApp->argv = argv;
 579
 580     wxString name(wxFileNameFromPath(argv[0]));
 581     wxStripExtension( name );
 582     wxTheApp->SetAppName( name );
 583
 584     if (!wxTheApp->OnInitGui())
 585         return 0;
 586
 587     // Here frames insert themselves automatically into wxTopLevelWindows by
 588     // getting created in OnInit().
 589     if (!wxTheApp->OnInit())
 590         return 0;
 591
 592     wxTheApp->m_initialized = wxTopLevelWindows.GetCount() != 0;
 593
 594     int retValue = 0;
 595
 596     if (wxTheApp->Initialized())
 597         retValue = wxTheApp->OnRun();
 598
 599     wxWindow *topWindow = wxTheApp->GetTopWindow();
 600     if (topWindow)
 601     {
 602         // Forcibly delete the window.
 603         if (topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 604             topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 605         {
 606             topWindow->Close( TRUE );
 607             wxTheApp->DeletePendingObjects();
 608         }
 609         else
 610         {
 611             delete topWindow;
 612             wxTheApp->SetTopWindow( (wxWindow*) NULL );
 613         }
 614     }
 615
 616     wxTheApp->OnExit();
 617
 618     // flush the logged messages if any
 619     wxLog *log = wxLog::GetActiveTarget();
 620     if (log != NULL && log->HasPendingMessages())
 621         log->Flush();
 622
 623     // continuing to use user defined log target is unsafe from now on because
 624     // some resources may be already unavailable, so replace it by something
 625     // more safe
 626     wxLog *oldlog = wxLog::SetActiveTarget(new wxLogStderr);
 627     if ( oldlog )
 628         delete oldlog;
 629
 630     wxApp::CleanUp();
 631
 632     return retValue;
 633 }
 634