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