src/gtk/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Created:     01/02/97
   6 // Id:
   7 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "app.h"
  13 #endif
  14
  15 #include "wx/app.h"
  16 #include "wx/gdicmn.h"
  17 #include "wx/utils.h"
  18 #include "wx/postscrp.h"
  19 #include "wx/intl.h"
  20 #include "wx/log.h"
  21 #include "wx/memory.h"
  22 #include "wx/font.h"
  23 #include "wx/settings.h"
  24 #include "wx/resource.h"
  25
  26 #include "unistd.h"
  27
  28 #ifdef USE_GDK_IMLIB
  29 #include "../gdk_imlib/gdk_imlib.h"
  30 #endif
  31
  32 //-----------------------------------------------------------------------------
  33 // global data
  34 //-----------------------------------------------------------------------------
  35
  36 wxApp *wxTheApp = NULL;
  37 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
  38
  39 extern wxList wxPendingDelete;
  40 extern wxResourceCache *wxTheResourceCache;
  41
  42 //-----------------------------------------------------------------------------
  43 // local functions
  44 //-----------------------------------------------------------------------------
  45
  46 extern void wxFlushResources(void);
  47
  48 //-----------------------------------------------------------------------------
  49 // global functions
  50 //-----------------------------------------------------------------------------
  51
  52 void wxExit(void)
  53 {
  54   gtk_main_quit();
  55 }
  56
  57 bool wxYield(void)
  58 {
  59   while (gtk_events_pending() > 0) gtk_main_iteration();
  60   return TRUE;
  61 }
  62
  63 //-----------------------------------------------------------------------------
  64 // wxApp
  65 //-----------------------------------------------------------------------------
  66
  67 IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
  68
  69 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
  70     EVT_IDLE(wxApp::OnIdle)
  71 END_EVENT_TABLE()
  72
  73 gint wxapp_idle_callback( gpointer WXUNUSED(data) )
  74 {
  75   if (wxTheApp) while (wxTheApp->ProcessIdle()) {}
  76   usleep( 10000 );
  77   return TRUE;
  78 }
  79
  80 wxApp::wxApp()
  81 {
  82   m_idleTag = 0;
  83   m_topWindow = NULL;
  84   m_exitOnFrameDelete = TRUE;
  85 }
  86
  87 wxApp::~wxApp(void)
  88 {
  89   gtk_idle_remove( m_idleTag );
  90 }
  91
  92 bool wxApp::OnInit(void)
  93 {
  94   return TRUE;
  95 }
  96
  97 bool wxApp::OnInitGui(void)
  98 {
  99   m_idleTag = gtk_idle_add( wxapp_idle_callback, NULL );
 100   return TRUE;
 101 }
 102
 103 int wxApp::OnRun(void)
 104 {
 105   return MainLoop();
 106 }
 107
 108 bool wxApp::ProcessIdle(void)
 109 {
 110   wxIdleEvent event;
 111   event.SetEventObject( this );
 112   ProcessEvent( event );
 113
 114   return event.MoreRequested();
 115 }
 116
 117 void wxApp::OnIdle( wxIdleEvent &event )
 118 {
 119   static bool inOnIdle = FALSE;
 120
 121   // Avoid recursion (via ProcessEvent default case)
 122   if (inOnIdle)
 123     return;
 124
 125   inOnIdle = TRUE;
 126
 127   // 'Garbage' collection of windows deleted with Close().
 128   DeletePendingObjects();
 129
 130   // flush the logged messages if any
 131   wxLog *pLog = wxLog::GetActiveTarget();
 132   if ( pLog != NULL && pLog->HasPendingMessages() )
 133     pLog->Flush();
 134
 135   // Send OnIdle events to all windows
 136   bool needMore = SendIdleEvents();
 137
 138   if (needMore)
 139     event.RequestMore(TRUE);
 140
 141   inOnIdle = FALSE;
 142 }
 143
 144 bool wxApp::SendIdleEvents(void)
 145 {
 146     bool needMore = FALSE;
 147         wxNode* node = wxTopLevelWindows.First();
 148         while (node)
 149         {
 150                 wxWindow* win = (wxWindow*) node->Data();
 151                 if (SendIdleEvents(win))
 152             needMore = TRUE;
 153
 154                 node = node->Next();
 155         }
 156     return needMore;
 157 }
 158
 159 bool wxApp::SendIdleEvents( wxWindow* win )
 160 {
 161     bool needMore = FALSE;
 162
 163         wxIdleEvent event;
 164         event.SetEventObject(win);
 165         win->ProcessEvent(event);
 166
 167     if (event.MoreRequested())
 168         needMore = TRUE;
 169
 170         wxNode* node = win->GetChildren()->First();
 171         while (node)
 172         {
 173                 wxWindow* win = (wxWindow*) node->Data();
 174                 if (SendIdleEvents(win))
 175             needMore = TRUE;
 176
 177                 node = node->Next();
 178         }
 179     return needMore ;
 180 }
 181
 182 int wxApp::OnExit(void)
 183 {
 184   return 0;
 185 }
 186
 187 int wxApp::MainLoop(void)
 188 {
 189   gtk_main();
 190   return 0;
 191 }
 192
 193 void wxApp::ExitMainLoop(void)
 194 {
 195   gtk_main_quit();
 196 }
 197
 198 bool wxApp::Initialized(void)
 199 {
 200   return m_initialized;
 201 }
 202
 203 bool wxApp::Pending(void)
 204 {
 205   return FALSE;
 206 }
 207
 208 void wxApp::Dispatch(void)
 209 {
 210 }
 211
 212 void wxApp::DeletePendingObjects(void)
 213 {
 214   wxNode *node = wxPendingDelete.First();
 215   while (node)
 216   {
 217     wxObject *obj = (wxObject *)node->Data();
 218
 219     delete obj;
 220
 221     if (wxPendingDelete.Member(obj))
 222       delete node;
 223
 224     node = wxPendingDelete.First();
 225   }
 226 }
 227
 228 wxWindow *wxApp::GetTopWindow(void)
 229 {
 230   if (m_topWindow) return m_topWindow;
 231   wxNode *node = wxTopLevelWindows.First();
 232   if (!node) return NULL;
 233   return (wxWindow*)node->Data();
 234 }
 235
 236 void wxApp::SetTopWindow( wxWindow *win )
 237 {
 238   m_topWindow = win;
 239 }
 240
 241 void wxApp::CommonInit(void)
 242 {
 243
 244 /*
 245 #if USE_RESOURCES
 246   (void) wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
 247 #endif
 248 */
 249   wxSystemSettings::Init();
 250   wxTheResourceCache = new wxResourceCache(wxKEY_STRING);
 251
 252   wxTheFontNameDirectory =  new wxFontNameDirectory;
 253   wxTheFontNameDirectory->Initialize();
 254
 255   wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 256   wxTheColourDatabase->Initialize();
 257
 258   wxInitializeStockLists();
 259   wxInitializeStockObjects();
 260
 261   wxInitializeResourceSystem();
 262
 263   // For PostScript printing
 264 #if USE_POSTSCRIPT
 265   wxInitializePrintSetupData();
 266   wxThePrintPaperDatabase = new wxPrintPaperDatabase;
 267   wxThePrintPaperDatabase->CreateDatabase();
 268 #endif
 269
 270
 271 /*
 272   wxBitmap::InitStandardHandlers();
 273
 274   g_globalCursor = new wxCursor;
 275 */
 276 }
 277
 278 void wxApp::CommonCleanUp(void)
 279 {
 280   wxDELETE(wxTheColourDatabase);
 281   wxDELETE(wxThePrintPaperDatabase);
 282   wxDELETE(wxThePrintSetupData);
 283   wxDELETE(wxTheFontNameDirectory);
 284   wxDeleteStockObjects();
 285
 286   wxFlushResources();
 287
 288   wxDELETE(wxTheResourceCache);
 289
 290   wxDeleteStockLists();
 291
 292   wxCleanUpResourceSystem();
 293
 294   wxSystemSettings::Done();
 295 }
 296
 297 wxLog *wxApp::CreateLogTarget()
 298 {
 299   return new wxLogGui;
 300 }
 301
 302 //-----------------------------------------------------------------------------
 303 // wxEntry
 304 //-----------------------------------------------------------------------------
 305
 306 int wxEntry( int argc, char *argv[] )
 307 {
 308   wxBuffer = new char[BUFSIZ + 512];
 309
 310   wxClassInfo::InitializeClasses();
 311
 312 #if (WXDEBUG && USE_MEMORY_TRACING) || USE_DEBUG_CONTEXT
 313
 314 #if !defined(_WINDLL)
 315   streambuf* sBuf = new wxDebugStreamBuf;
 316 #else
 317   streambuf* sBuf = NULL;
 318 #endif
 319   ostream* oStr = new ostream(sBuf) ;
 320   wxDebugContext::SetStream(oStr, sBuf);
 321
 322 #endif
 323
 324   if (!wxTheApp)
 325   {
 326     if (!wxApp::GetInitializerFunction())
 327     {
 328       printf( _("wxWindows error: No initializer - use IMPLEMENT_APP macro.\n") );
 329       return 0;
 330     }
 331
 332     wxAppInitializerFunction app_ini = wxApp::GetInitializerFunction();
 333
 334     wxObject *test_app = app_ini();
 335
 336     wxTheApp = (wxApp*) test_app;
 337   }
 338
 339   if (!wxTheApp)
 340   {
 341     printf( _("wxWindows error: wxTheApp == NULL\n") );
 342     return 0;
 343   }
 344
 345   wxTheApp->argc = argc;
 346   wxTheApp->argv = argv;
 347
 348   gtk_init( &argc, &argv );
 349
 350 #ifdef USE_GDK_IMLIB
 351
 352   gdk_imlib_init();
 353
 354   gtk_widget_push_visual(gdk_imlib_get_visual());
 355
 356   gtk_widget_push_colormap(gdk_imlib_get_colormap());
 357
 358 #endif
 359
 360   wxApp::CommonInit();
 361
 362   wxTheApp->OnInitGui();
 363
 364   // Here frames insert themselves automatically
 365   // into wxTopLevelWindows by getting created
 366   // in OnInit().
 367
 368   if (!wxTheApp->OnInit()) return 0;
 369
 370   wxTheApp->m_initialized = (wxTopLevelWindows.Number() > 0);
 371
 372   int retValue = 0;
 373
 374   if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun();
 375
 376   wxTheApp->DeletePendingObjects();
 377
 378   wxTheApp->OnExit();
 379
 380   wxApp::CommonCleanUp();
 381
 382   wxDELETE(wxTheApp);
 383
 384 #if (WXDEBUG && USE_MEMORY_TRACING) || USE_DEBUG_CONTEXT
 385   // At this point we want to check if there are any memory
 386   // blocks that aren't part of the wxDebugContext itself,
 387   // as a special case. Then when dumping we need to ignore
 388   // wxDebugContext, too.
 389   if (wxDebugContext::CountObjectsLeft() > 0)
 390   {
 391     wxTrace("There were memory leaks.\n");
 392     wxDebugContext::Dump();
 393     wxDebugContext::PrintStatistics();
 394   }
 395   wxDebugContext::SetStream(NULL, NULL);
 396 #endif
 397
 398   return retValue;
 399 }
 400
 401 //-----------------------------------------------------------------------------
 402 // main()
 403 //-----------------------------------------------------------------------------
 404
 405 #if defined(AIX) || defined(AIX4) || defined(____HPUX__)
 406
 407  // main in IMPLEMENT_WX_MAIN in IMPLEMENT_APP in app.h
 408
 409 #else
 410
 411   int main(int argc, char *argv[]) { return wxEntry(argc, argv); }
 412
 413 #endif
 414
 415