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 #if wxUSE_WX_RESOURCES
  24 #include "wx/resource.h"
  25 #endif
  26 #include "wx/module.h"
  27 #include "wx/image.h"
  28 #if wxUSE_THREADS
  29 #include "wx/thread.h"
  30 #endif
  31 #include "unistd.h"
  32
  33 #ifdef __SUN__
  34 extern "C"
  35 {
  36 void usleep(unsigned long usec);
  37 };
  38 #endif
  39
  40 #include "glib.h"
  41 #include "gdk/gdk.h"
  42 #include "gtk/gtk.h"
  43 #include "wx/gtk/win_gtk.h"
  44
  45 #include   <unistd.h> // usleep() on solaris
  46
  47 //-----------------------------------------------------------------------------
  48 // global data
  49 //-----------------------------------------------------------------------------
  50
  51 wxApp *wxTheApp = (wxApp *)  NULL;
  52 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
  53
  54 extern wxList wxPendingDelete;
  55 extern wxResourceCache *wxTheResourceCache;
  56
  57 unsigned char g_palette[64*3] =
  58 {
  59   0x0,  0x0,  0x0,
  60   0xff, 0xff, 0xff,
  61   0xff, 0x0,  0x0,
  62   0xff, 0xff, 0x0,
  63   0x0,  0xff, 0x0,
  64   0x0,  0x0,  0xff,
  65   0x0,  0xff, 0xff,
  66   0x99, 0x99, 0x99,
  67   0xff, 0x88, 0x0,
  68   0x88, 0x0,  0x0,
  69   0x0,  0x88, 0x88,
  70   0x88, 0x88, 0x0,
  71   0xff, 0xcc, 0x97,
  72   0xbb, 0xbb, 0xbb,
  73   0x9f, 0x6b, 0x42,
  74   0x55, 0x55, 0x55,
  75   0xdd, 0xdd, 0xdd,
  76   0x77, 0x77, 0x77,
  77   0x33, 0x33, 0x33,
  78   0xcc, 0x0,  0x0,
  79   0xff, 0x44, 0x0,
  80   0xff, 0xcc, 0x0,
  81   0xcc, 0xcc, 0x0,
  82   0x60, 0x60, 0x0,
  83   0x0,  0x43, 0x0,
  84   0x0,  0x7f, 0x0,
  85   0x0,  0xcc, 0x0,
  86   0x0,  0x44, 0x44,
  87   0x0,  0x0,  0x44,
  88   0x0,  0x0,  0x88,
  89   0xef, 0xb1, 0x7b,
  90   0xdf, 0x98, 0x5f,
  91   0xbf, 0x87, 0x56,
  92   0x7f, 0x57, 0x26,
  93   0x5f, 0x39, 0xc,
  94   0x3f, 0x1c, 0x0,
  95   0x21, 0x0,  0x0,
  96   0x0,  0x43, 0x87,
  97   0x2d, 0x70, 0xaf,
  98   0x5a, 0x9e, 0xd7,
  99   0x87, 0xcc, 0xff,
 100   0xff, 0xe0, 0xba,
 101   0x21, 0x43, 0xf,
 102   0x3d, 0x5d, 0x25,
 103   0x59, 0x78, 0x3a,
 104   0x75, 0x93, 0x4f,
 105   0x91, 0xae, 0x64,
 106   0xad, 0xc8, 0x7a,
 107   0xf0, 0xa8, 0xef,
 108   0xd0, 0x88, 0xd0,
 109   0xaf, 0x66, 0xaf,
 110   0x8e, 0x44, 0x8e,
 111   0x6d, 0x22, 0x6d,
 112   0x4b, 0x0,  0x4b,
 113   0xff, 0xc0, 0xbc,
 114   0xff, 0x93, 0x91,
 115   0xff, 0x66, 0x67,
 116   0xd8, 0xf2, 0xbf,
 117   0xff, 0xc9, 0x68,
 118   0xff, 0x96, 0x67,
 119   0xa5, 0x60, 0xff,
 120   0x51, 0xff, 0x99,
 121   0x3f, 0xa5, 0x63,
 122   0x98, 0x90, 0x67
 123 };
 124
 125 //-----------------------------------------------------------------------------
 126 // local functions
 127 //-----------------------------------------------------------------------------
 128
 129 extern void wxFlushResources(void);
 130
 131 //-----------------------------------------------------------------------------
 132 // global functions
 133 //-----------------------------------------------------------------------------
 134
 135 void wxExit(void)
 136 {
 137     gtk_main_quit();
 138 }
 139
 140 bool wxYield(void)
 141 {
 142     while (gtk_events_pending() > 0) gtk_main_iteration();
 143     return TRUE;
 144 }
 145
 146 //-----------------------------------------------------------------------------
 147 // wxApp
 148 //-----------------------------------------------------------------------------
 149
 150 IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
 151
 152 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 153     EVT_IDLE(wxApp::OnIdle)
 154 END_EVENT_TABLE()
 155
 156 gint wxapp_idle_callback( gpointer WXUNUSED(data) )
 157 {
 158     if (wxTheApp) while (wxTheApp->ProcessIdle()) {}
 159 #if wxUSE_THREADS
 160     wxMutexGuiLeave();
 161 #endif
 162     usleep(10000);
 163 #if wxUSE_THREADS
 164     wxMutexGuiEnter();
 165 #endif
 166     return TRUE;
 167 }
 168
 169 wxApp::wxApp()
 170 {
 171     wxTheApp = this;
 172
 173     m_topWindow = (wxWindow *) NULL;
 174     m_exitOnFrameDelete = TRUE;
 175
 176     m_idleTag = gtk_idle_add( wxapp_idle_callback, (gpointer) NULL );
 177
 178     m_colorCube = (unsigned char*) NULL;
 179 }
 180
 181 wxApp::~wxApp(void)
 182 {
 183     gtk_idle_remove( m_idleTag );
 184
 185     if (m_colorCube) free(m_colorCube);
 186 }
 187
 188 bool wxApp::OnInitGui()
 189 {
 190     /* Nothing to do for 15, 16, 24, 32 bit displays */
 191
 192     GdkVisual *visual = gdk_visual_get_system();
 193     if (visual->depth > 8) return TRUE;
 194
 195         /* this initiates the standard palette as defined by GdkImlib
 196            in the GNOME libraries. it ensures that all GNOME applications
 197            use the same 64 colormap entries on 8-bit displays so you
 198            can use several rather graphics-heavy applications at the
 199            same time.
 200            NOTE: this doesn't really seem to work this way... */
 201
 202         /*
 203         GdkColormap *cmap = gdk_colormap_new( gdk_visual_get_system(), TRUE );
 204
 205         for (int i = 0; i < 64; i++)
 206         {
 207             GdkColor col;
 208             col.red    = g_palette[i*3 + 0] << 8;
 209             col.green  = g_palette[i*3 + 1] << 8;
 210             col.blue   = g_palette[i*3 + 2] << 8;
 211             col.pixel  = 0;
 212
 213             gdk_color_alloc( cmap, &col );
 214         }
 215
 216         gtk_widget_set_default_colormap( cmap );
 217         */
 218
 219     /* initialize color cube for 8-bit color reduction dithering */
 220
 221     GdkColormap *cmap = gtk_widget_get_default_colormap();
 222
 223     m_colorCube = (unsigned char*)malloc(32 * 32 * 32);
 224
 225      for (int r = 0; r < 32; r++)
 226      {
 227         for (int g = 0; g < 32; g++)
 228         {
 229             for (int b = 0; b < 32; b++)
 230             {
 231                 int rr = (r << 3) | (r >> 2);
 232                 int gg = (g << 3) | (g >> 2);
 233                 int bb = (b << 3) | (b >> 2);
 234
 235                 GdkColor *colors = cmap->colors;
 236                 int max = 3 * (65536);
 237                 int index = -1;
 238
 239                 for (int i = 0; i < cmap->size; i++)
 240                 {
 241                     int rdiff = ((rr << 8) - colors[i].red);
 242                     int gdiff = ((gg << 8)- colors[i].green);
 243                     int bdiff = ((bb << 8)- colors[i].blue);
 244                     int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
 245                     if (sum < max) { index = i; max = sum; }
 246                 }
 247
 248                 m_colorCube[ (r*1024) + (g*32) + b ] = index;
 249             }
 250         }
 251     }
 252
 253
 254     return TRUE;
 255 }
 256
 257 bool wxApp::ProcessIdle(void)
 258 {
 259     wxIdleEvent event;
 260     event.SetEventObject( this );
 261     ProcessEvent( event );
 262
 263     return event.MoreRequested();
 264 }
 265
 266 void wxApp::OnIdle( wxIdleEvent &event )
 267 {
 268     static bool inOnIdle = FALSE;
 269
 270     /* Avoid recursion (via ProcessEvent default case) */
 271     if (inOnIdle)
 272         return;
 273
 274     inOnIdle = TRUE;
 275
 276     /* 'Garbage' collection of windows deleted with Close(). */
 277     DeletePendingObjects();
 278
 279     /* flush the logged messages if any */
 280     wxLog *log = wxLog::GetActiveTarget();
 281     if (log != NULL && log->HasPendingMessages())
 282         log->Flush();
 283
 284     /* Send OnIdle events to all windows */
 285     bool needMore = SendIdleEvents();
 286
 287     if (needMore)
 288         event.RequestMore(TRUE);
 289
 290     inOnIdle = FALSE;
 291 }
 292
 293 bool wxApp::SendIdleEvents(void)
 294 {
 295     bool needMore = FALSE;
 296
 297     wxNode* node = wxTopLevelWindows.First();
 298     while (node)
 299     {
 300         wxWindow* win = (wxWindow*) node->Data();
 301         if (SendIdleEvents(win))
 302             needMore = TRUE;
 303         node = node->Next();
 304     }
 305     return needMore;
 306 }
 307
 308 bool wxApp::SendIdleEvents( wxWindow* win )
 309 {
 310     bool needMore = FALSE;
 311
 312     wxIdleEvent event;
 313     event.SetEventObject(win);
 314
 315     win->OnInternalIdle();
 316
 317     win->ProcessEvent(event);
 318
 319     if (event.MoreRequested())
 320         needMore = TRUE;
 321
 322     wxNode* node = win->GetChildren().First();
 323     while (node)
 324     {
 325         wxWindow* win = (wxWindow*) node->Data();
 326         if (SendIdleEvents(win))
 327             needMore = TRUE;
 328
 329         node = node->Next();
 330     }
 331     return needMore ;
 332 }
 333
 334 int wxApp::MainLoop(void)
 335 {
 336     gtk_main();
 337     return 0;
 338 }
 339
 340 void wxApp::ExitMainLoop(void)
 341 {
 342     gtk_main_quit();
 343 }
 344
 345 bool wxApp::Initialized(void)
 346 {
 347     return m_initialized;
 348 }
 349
 350 bool wxApp::Pending(void)
 351 {
 352     return FALSE;
 353 }
 354
 355 void wxApp::Dispatch(void)
 356 {
 357 }
 358
 359 void wxApp::DeletePendingObjects(void)
 360 {
 361     wxNode *node = wxPendingDelete.First();
 362     while (node)
 363     {
 364         wxObject *obj = (wxObject *)node->Data();
 365
 366         delete obj;
 367
 368         if (wxPendingDelete.Member(obj))
 369         delete node;
 370
 371         node = wxPendingDelete.First();
 372     }
 373 }
 374
 375 wxWindow *wxApp::GetTopWindow(void)
 376 {
 377     if (m_topWindow) return m_topWindow;
 378     wxNode *node = wxTopLevelWindows.First();
 379     if (!node) return (wxWindow *) NULL;
 380     return (wxWindow*)node->Data();
 381 }
 382
 383 void wxApp::SetTopWindow( wxWindow *win )
 384 {
 385     m_topWindow = win;
 386 }
 387
 388 bool wxApp::Initialize(void)
 389 {
 390     wxBuffer = new char[BUFSIZ + 512];
 391
 392     wxClassInfo::InitializeClasses();
 393
 394     wxSystemSettings::Init();
 395
 396 /*
 397     wxTheFontNameDirectory =  new wxFontNameDirectory;
 398     wxTheFontNameDirectory->Initialize();
 399 */
 400
 401     wxTheColourDatabase = new wxColourDatabase( wxKEY_STRING );
 402     wxTheColourDatabase->Initialize();
 403
 404     wxInitializeStockLists();
 405     wxInitializeStockObjects();
 406
 407 #if wxUSE_WX_RESOURCES
 408     wxTheResourceCache = new wxResourceCache( wxKEY_STRING );
 409
 410     wxInitializeResourceSystem();
 411 #endif
 412
 413     wxImage::InitStandardHandlers();
 414
 415     /* no global cursor under X
 416        g_globalCursor = new wxCursor; */
 417
 418     wxModule::RegisterModules();
 419     if (!wxModule::InitializeModules()) return FALSE;
 420
 421     return TRUE;
 422 }
 423
 424 void wxApp::CleanUp(void)
 425 {
 426     wxModule::CleanUpModules();
 427
 428 #if wxUSE_WX_RESOURCES
 429     wxFlushResources();
 430
 431     if (wxTheResourceCache) delete wxTheResourceCache;
 432     wxTheResourceCache = (wxResourceCache*) NULL;
 433
 434     wxCleanUpResourceSystem();
 435 #endif
 436
 437     if (wxTheColourDatabase) delete wxTheColourDatabase;
 438     wxTheColourDatabase = (wxColourDatabase*) NULL;
 439
 440 /*
 441     if (wxTheFontNameDirectory) delete wxTheFontNameDirectory;
 442     wxTheFontNameDirectory = (wxFontNameDirectory*) NULL;
 443 */
 444
 445     wxDeleteStockObjects();
 446
 447     wxDeleteStockLists();
 448
 449     wxImage::CleanUpHandlers();
 450
 451     delete wxTheApp;
 452     wxTheApp = (wxApp*) NULL;
 453
 454     wxSystemSettings::Done();
 455
 456     delete[] wxBuffer;
 457
 458     wxClassInfo::CleanUpClasses();
 459
 460     /* check for memory leaks */
 461 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 462     if (wxDebugContext::CountObjectsLeft() > 0)
 463     {
 464         wxLogDebug("There were memory leaks.\n");
 465         wxDebugContext::Dump();
 466         wxDebugContext::PrintStatistics();
 467     }
 468 #endif
 469
 470     /* do this as the very last thing because everything else can log messages */
 471     wxLog::DontCreateOnDemand();
 472
 473     wxLog *oldLog = wxLog::SetActiveTarget( (wxLog*) NULL );
 474     if (oldLog) delete oldLog;
 475 }
 476
 477 wxLog *wxApp::CreateLogTarget()
 478 {
 479     return new wxLogGui;
 480 }
 481
 482 //-----------------------------------------------------------------------------
 483 // wxEntry
 484 //-----------------------------------------------------------------------------
 485
 486 int wxEntry( int argc, char *argv[] )
 487 {
 488     gtk_set_locale();
 489
 490     gtk_init( &argc, &argv );
 491
 492     if (!wxApp::Initialize()) return 0;
 493
 494     if (!wxTheApp)
 495     {
 496         if (!wxApp::GetInitializerFunction())
 497         {
 498             printf( "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
 499             return 0;
 500         }
 501
 502         wxAppInitializerFunction app_ini = wxApp::GetInitializerFunction();
 503
 504         wxObject *test_app = app_ini();
 505
 506         wxTheApp = (wxApp*) test_app;
 507     }
 508
 509     if (!wxTheApp)
 510     {
 511         printf( "wxWindows error: wxTheApp == NULL\n" );
 512         return 0;
 513     }
 514
 515     wxTheApp->argc = argc;
 516     wxTheApp->argv = argv;
 517
 518     char name[200];
 519     strcpy( name, argv[0] );
 520     strcpy( name, wxFileNameFromPath(name) );
 521     wxStripExtension( name );
 522     wxTheApp->SetAppName( name );
 523
 524     if (!wxTheApp->OnInitGui()) return 0;
 525
 526     /* Here frames insert themselves automatically
 527      * into wxTopLevelWindows by getting created
 528      * in OnInit(). */
 529
 530     if (!wxTheApp->OnInit()) return 0;
 531
 532     wxTheApp->m_initialized = (wxTopLevelWindows.Number() > 0);
 533
 534     int retValue = 0;
 535
 536     if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun();
 537
 538     wxWindow *topWindow = wxTheApp->GetTopWindow();
 539     if (topWindow)
 540     {
 541         /* Forcibly delete the window. */
 542         if (topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 543             topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 544         {
 545             topWindow->Close( TRUE );
 546             wxTheApp->DeletePendingObjects();
 547         }
 548         else
 549         {
 550             delete topWindow;
 551             wxTheApp->SetTopWindow( (wxWindow*) NULL );
 552         }
 553     }
 554
 555     wxTheApp->OnExit();
 556
 557     /* flush the logged messages if any */
 558     wxLog *log = wxLog::GetActiveTarget();
 559     if (log != NULL && log->HasPendingMessages())
 560         log->Flush();
 561
 562     wxApp::CleanUp();
 563
 564     return retValue;
 565 }
 566