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