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 #if wxUSE_WX_RESOURCES
  23 #include "wx/resource.h"
  24 #endif
  25 #include "wx/module.h"
  26 #include "wx/image.h"
  27 #if wxUSE_THREADS
  28 #include "wx/thread.h"
  29 #endif
  30 #include "unistd.h"
  31
  32 #include "glib.h"
  33 #include "gdk/gdk.h"
  34 #include "gtk/gtk.h"
  35 #include "wx/gtk/win_gtk.h"
  36
  37 //-----------------------------------------------------------------------------
  38 // global data
  39 //-----------------------------------------------------------------------------
  40
  41 wxApp *wxTheApp = (wxApp *)  NULL;
  42 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
  43
  44 extern wxList wxPendingDelete;
  45 extern wxResourceCache *wxTheResourceCache;
  46
  47 GdkVisual *wxVisualSetByExternal = (GdkVisual*) NULL;
  48 GdkColormap *wxColormapSetByExternal = (GdkColormap*) NULL;
  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     m_idleTag = 0;
 165     m_topWindow = (wxWindow *) NULL;
 166     m_exitOnFrameDelete = TRUE;
 167     wxTheApp = this;
 168 }
 169
 170 wxApp::~wxApp(void)
 171 {
 172     gtk_idle_remove( m_idleTag );
 173 }
 174
 175 bool wxApp::InitVisual()
 176 {
 177     if (wxVisualSetByExternal)
 178     {
 179         /* this happens in the wxModule code of the OpenGl canvas.
 180            it chooses the best display for OpenGl and stores it
 181            in wxDisplaySetByExternal. we then have to make it the
 182            default for the system */
 183
 184         gtk_widget_set_default_visual( wxVisualSetByExternal );
 185     }
 186
 187     if (wxColormapSetByExternal)
 188     {
 189         /* OpenGl also gives us a colormap */
 190
 191         gtk_widget_set_default_colormap( wxColormapSetByExternal );
 192     }
 193     else
 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
 201         GdkColormap *cmap = gdk_colormap_new( gdk_visual_get_system(), TRUE );
 202
 203         for (int i = 0; i < 64; i++)
 204         {
 205             GdkColor col;
 206             col.red    = g_palette[i*3 + 0] << 8;
 207             col.green  = g_palette[i*3 + 1] << 8;
 208             col.blue   = g_palette[i*3 + 2] << 8;
 209             col.pixel  = 0;
 210
 211             gdk_color_alloc( cmap, &col );
 212         }
 213
 214         gtk_widget_set_default_colormap( cmap );
 215     }
 216
 217     return TRUE;
 218 }
 219
 220 bool wxApp::OnInitGui(void)
 221 {
 222     m_idleTag = gtk_idle_add( wxapp_idle_callback, NULL );
 223
 224     return TRUE;
 225 }
 226
 227 bool wxApp::OnInit(void)
 228 {
 229     return TRUE;
 230 }
 231
 232 int wxApp::OnRun(void)
 233 {
 234     return MainLoop();
 235 }
 236
 237 bool wxApp::ProcessIdle(void)
 238 {
 239     wxIdleEvent event;
 240     event.SetEventObject( this );
 241     ProcessEvent( event );
 242
 243     return event.MoreRequested();
 244 }
 245
 246 void wxApp::OnIdle( wxIdleEvent &event )
 247 {
 248     static bool inOnIdle = FALSE;
 249
 250     /* Avoid recursion (via ProcessEvent default case) */
 251     if (inOnIdle)
 252         return;
 253
 254     inOnIdle = TRUE;
 255
 256     /* 'Garbage' collection of windows deleted with Close(). */
 257     DeletePendingObjects();
 258
 259     /* flush the logged messages if any */
 260     wxLog *log = wxLog::GetActiveTarget();
 261     if (log != NULL && log->HasPendingMessages())
 262         log->Flush();
 263
 264     /* Send OnIdle events to all windows */
 265     bool needMore = SendIdleEvents();
 266
 267     if (needMore)
 268         event.RequestMore(TRUE);
 269
 270     inOnIdle = FALSE;
 271 }
 272
 273 bool wxApp::SendIdleEvents(void)
 274 {
 275     bool needMore = FALSE;
 276
 277     wxNode* node = wxTopLevelWindows.First();
 278     while (node)
 279     {
 280         wxWindow* win = (wxWindow*) node->Data();
 281         if (SendIdleEvents(win))
 282             needMore = TRUE;
 283         node = node->Next();
 284     }
 285     return needMore;
 286 }
 287
 288 bool wxApp::SendIdleEvents( wxWindow* win )
 289 {
 290     bool needMore = FALSE;
 291
 292     wxIdleEvent event;
 293     event.SetEventObject(win);
 294     win->ProcessEvent(event);
 295
 296     if (event.MoreRequested())
 297         needMore = TRUE;
 298
 299     wxNode* node = win->GetChildren().First();
 300     while (node)
 301     {
 302         wxWindow* win = (wxWindow*) node->Data();
 303         if (SendIdleEvents(win))
 304             needMore = TRUE;
 305
 306         node = node->Next();
 307     }
 308     return needMore ;
 309 }
 310
 311 int wxApp::OnExit(void)
 312 {
 313     return 0;
 314 }
 315
 316 int wxApp::MainLoop(void)
 317 {
 318     gtk_main();
 319     return 0;
 320 }
 321
 322 void wxApp::ExitMainLoop(void)
 323 {
 324     gtk_main_quit();
 325 }
 326
 327 bool wxApp::Initialized(void)
 328 {
 329     return m_initialized;
 330 }
 331
 332 bool wxApp::Pending(void)
 333 {
 334     return FALSE;
 335 }
 336
 337 void wxApp::Dispatch(void)
 338 {
 339 }
 340
 341 void wxApp::DeletePendingObjects(void)
 342 {
 343     wxNode *node = wxPendingDelete.First();
 344     while (node)
 345     {
 346         wxObject *obj = (wxObject *)node->Data();
 347
 348         delete obj;
 349
 350         if (wxPendingDelete.Member(obj))
 351         delete node;
 352
 353         node = wxPendingDelete.First();
 354     }
 355 }
 356
 357 wxWindow *wxApp::GetTopWindow(void)
 358 {
 359     if (m_topWindow) return m_topWindow;
 360     wxNode *node = wxTopLevelWindows.First();
 361     if (!node) return (wxWindow *) NULL;
 362     return (wxWindow*)node->Data();
 363 }
 364
 365 void wxApp::SetTopWindow( wxWindow *win )
 366 {
 367     m_topWindow = win;
 368 }
 369
 370 void wxApp::CommonInit(void)
 371 {
 372   wxSystemSettings::Init();
 373
 374   wxTheFontNameDirectory =  new wxFontNameDirectory;
 375   wxTheFontNameDirectory->Initialize();
 376
 377   wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 378   wxTheColourDatabase->Initialize();
 379
 380   wxInitializeStockLists();
 381   wxInitializeStockObjects();
 382
 383 #if wxUSE_WX_RESOURCES
 384   wxTheResourceCache = new wxResourceCache(wxKEY_STRING);
 385
 386   wxInitializeResourceSystem();
 387 #endif
 388
 389   wxImage::InitStandardHandlers();
 390
 391 //  g_globalCursor = new wxCursor;
 392 }
 393
 394 void wxApp::CommonCleanUp(void)
 395 {
 396     if (wxTheColourDatabase) delete wxTheColourDatabase;
 397     wxTheColourDatabase = (wxColourDatabase*) NULL;
 398
 399     if (wxTheFontNameDirectory) delete wxTheFontNameDirectory;
 400     wxTheFontNameDirectory = (wxFontNameDirectory*) NULL;
 401
 402     wxDeleteStockObjects();
 403
 404 #if wxUSE_WX_RESOURCES
 405     wxFlushResources();
 406
 407     if (wxTheResourceCache) delete wxTheResourceCache;
 408     wxTheResourceCache = (wxResourceCache*) NULL;
 409
 410     wxCleanUpResourceSystem();
 411 #endif
 412
 413     wxDeleteStockLists();
 414
 415     wxImage::CleanUpHandlers();
 416
 417     wxSystemSettings::Done();
 418 }
 419
 420 wxLog *wxApp::CreateLogTarget()
 421 {
 422   return new wxLogGui;
 423 }
 424
 425 //-----------------------------------------------------------------------------
 426 // wxEntry
 427 //-----------------------------------------------------------------------------
 428
 429 int wxEntry( int argc, char *argv[] )
 430 {
 431     wxBuffer = new char[BUFSIZ + 512];
 432
 433     wxClassInfo::InitializeClasses();
 434
 435
 436     if (!wxTheApp)
 437     {
 438         if (!wxApp::GetInitializerFunction())
 439         {
 440             printf( "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
 441             return 0;
 442         }
 443
 444         wxAppInitializerFunction app_ini = wxApp::GetInitializerFunction();
 445
 446         wxObject *test_app = app_ini();
 447
 448         wxTheApp = (wxApp*) test_app;
 449     }
 450
 451     if (!wxTheApp)
 452     {
 453         printf( "wxWindows error: wxTheApp == NULL\n" );
 454         return 0;
 455     }
 456
 457     wxTheApp->argc = argc;
 458     wxTheApp->argv = argv;
 459
 460     char name[200];
 461     strcpy( name, argv[0] );
 462     strcpy( name, wxFileNameFromPath(name) );
 463     wxStripExtension( name );
 464     wxTheApp->SetAppName( name );
 465
 466     gtk_set_locale();
 467
 468     gtk_init( &argc, &argv );
 469
 470     wxModule::RegisterModules();
 471     if (!wxModule::InitializeModules()) return FALSE;
 472
 473     if (!wxTheApp->InitVisual()) return 0;
 474
 475     wxApp::CommonInit();
 476
 477     if (!wxTheApp->OnInitGui()) return 0;
 478
 479     // Here frames insert themselves automatically
 480     // into wxTopLevelWindows by getting created
 481     // in OnInit().
 482
 483     if (!wxTheApp->OnInit()) return 0;
 484
 485     wxTheApp->m_initialized = (wxTopLevelWindows.Number() > 0);
 486
 487     int retValue = 0;
 488
 489     if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun();
 490
 491     wxTheApp->DeletePendingObjects();
 492
 493     wxTheApp->OnExit();
 494
 495     wxModule::CleanUpModules();
 496
 497     wxApp::CommonCleanUp();
 498
 499     delete wxTheApp;
 500     wxTheApp = (wxApp*) NULL;
 501
 502     wxClassInfo::CleanUpClasses();
 503
 504     delete[] wxBuffer;
 505
 506 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 507
 508     if (wxDebugContext::CountObjectsLeft() > 0)
 509     {
 510         wxLogDebug("There were memory leaks.\n");
 511         wxDebugContext::Dump();
 512         wxDebugContext::PrintStatistics();
 513     }
 514
 515 #endif
 516
 517     wxLog *oldLog = wxLog::SetActiveTarget( (wxLog*) NULL );
 518     if (oldLog) delete oldLog;
 519
 520     return retValue;
 521 }
 522