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