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