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
  22 #include "unistd.h"
  23
  24 #ifdef USE_GDK_IMLIB
  25 #include "gdk_imlib.h"
  26 #endif
  27
  28 //-----------------------------------------------------------------------------
  29 // global data
  30 //-----------------------------------------------------------------------------
  31
  32 wxApp *wxTheApp = NULL;
  33 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
  34
  35 extern wxList wxPendingDelete;
  36
  37 //-----------------------------------------------------------------------------
  38 // local functions
  39 //-----------------------------------------------------------------------------
  40
  41 extern void wxFlushResources(void);
  42
  43 //-----------------------------------------------------------------------------
  44 // global functions
  45 //-----------------------------------------------------------------------------
  46
  47 void wxExit(void)
  48 {
  49   gtk_main_quit();
  50 };
  51
  52 bool wxYield(void)
  53 {
  54   while (gtk_events_pending() > 0) gtk_main_iteration();
  55   return TRUE;
  56 };
  57
  58 //-----------------------------------------------------------------------------
  59 // wxApp
  60 //-----------------------------------------------------------------------------
  61
  62 IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
  63
  64 gint wxapp_idle_callback( gpointer WXUNUSED(data) )
  65 {
  66   if (wxTheApp) wxTheApp->OnIdle();
  67   usleep( 10000 );
  68   return TRUE;
  69 };
  70
  71 wxApp::wxApp()
  72 {
  73   m_idleTag = 0;
  74   m_topWindow = NULL;
  75   m_exitOnFrameDelete = TRUE;
  76 };
  77
  78 wxApp::~wxApp(void)
  79 {
  80   gtk_idle_remove( m_idleTag );
  81 };
  82
  83 bool wxApp::OnInit(void)
  84 {
  85   return TRUE;
  86 };
  87
  88 bool wxApp::OnInitGui(void)
  89 {
  90   m_idleTag = gtk_idle_add( wxapp_idle_callback, NULL );
  91   return TRUE;
  92 };
  93
  94 int wxApp::OnRun(void)
  95 {
  96   return MainLoop();
  97 };
  98
  99 bool wxApp::OnIdle(void)
 100 {
 101   DeletePendingObjects();
 102   return FALSE;
 103 };
 104
 105 int wxApp::OnExit(void)
 106 {
 107   return 0;
 108 };
 109
 110 int wxApp::MainLoop(void)
 111 {
 112   gtk_main();
 113   return 0;
 114 };
 115
 116 void wxApp::ExitMainLoop(void)
 117 {
 118   gtk_main_quit();
 119 };
 120
 121 bool wxApp::Initialized(void)
 122 {
 123   return m_initialized;
 124 };
 125
 126 bool wxApp::Pending(void)
 127 {
 128   return FALSE;
 129 };
 130
 131 void wxApp::Dispatch(void)
 132 {
 133 };
 134
 135 void wxApp::DeletePendingObjects(void)
 136 {
 137   wxNode *node = wxPendingDelete.First();
 138   while (node)
 139   {
 140     wxObject *obj = (wxObject *)node->Data();
 141
 142     delete obj;
 143
 144     if (wxPendingDelete.Member(obj))
 145       delete node;
 146
 147     node = wxPendingDelete.First();
 148   };
 149 };
 150
 151 wxWindow *wxApp::GetTopWindow(void)
 152 {
 153   if (m_topWindow) return m_topWindow;
 154   wxNode *node = wxTopLevelWindows.First();
 155   if (!node) return NULL;
 156   return (wxWindow*)node->Data();
 157 };
 158
 159 void wxApp::SetTopWindow( wxWindow *win )
 160 {
 161   m_topWindow = win;
 162 };
 163
 164 void wxApp::CommonInit(void)
 165 {
 166
 167 /*
 168 #if USE_RESOURCES
 169   (void) wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
 170 #endif
 171 */
 172
 173   wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 174   wxTheColourDatabase->Initialize();
 175   wxInitializeStockObjects();
 176
 177   // For PostScript printing
 178 #if USE_POSTSCRIPT
 179   wxInitializePrintSetupData();
 180   wxThePrintPaperDatabase = new wxPrintPaperDatabase;
 181   wxThePrintPaperDatabase->CreateDatabase();
 182 #endif
 183
 184
 185 /*
 186   wxBitmap::InitStandardHandlers();
 187
 188   g_globalCursor = new wxCursor;
 189 */
 190
 191   wxInitializeStockObjects();
 192 };
 193
 194 void wxApp::CommonCleanUp(void)
 195 {
 196   wxDeleteStockObjects();
 197
 198   wxFlushResources();
 199 };
 200
 201 wxLog *wxApp::CreateLogTarget()
 202 {
 203   return new wxLogGui;
 204 }
 205
 206 //-----------------------------------------------------------------------------
 207 // wxEntry
 208 //-----------------------------------------------------------------------------
 209
 210 int wxEntry( int argc, char *argv[] )
 211 {
 212   wxBuffer = new char[BUFSIZ + 512];
 213
 214   wxClassInfo::InitializeClasses();
 215
 216   if (!wxTheApp)
 217   {
 218     if (!wxApp::GetInitializerFunction())
 219     {
 220       printf( "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
 221       return 0;
 222     };
 223
 224     wxAppInitializerFunction app_ini = wxApp::GetInitializerFunction();
 225
 226     wxObject *test_app = app_ini();
 227
 228     wxTheApp = (wxApp*) test_app;
 229
 230 //    wxTheApp = (wxApp*)( app_ini() );
 231   };
 232
 233   if (!wxTheApp)
 234   {
 235     printf( "wxWindows error: wxTheApp == NULL\n" );
 236     return 0;
 237   };
 238
 239 //  printf( "Programmstart.\n" );
 240
 241   wxTheApp->argc = argc;
 242   wxTheApp->argv = argv;
 243
 244   gtk_init( &argc, &argv );
 245
 246 #ifdef USE_GDK_IMLIB
 247
 248   gdk_imlib_init();
 249
 250   gtk_widget_push_visual(gdk_imlib_get_visual());
 251
 252   gtk_widget_push_colormap(gdk_imlib_get_colormap());
 253
 254 #endif
 255
 256   wxApp::CommonInit();
 257
 258   wxTheApp->OnInitGui();
 259
 260   // Here frames insert themselves automatically
 261   // into wxTopLevelWindows by getting created
 262   // in OnInit().
 263
 264   if (!wxTheApp->OnInit()) return 0;
 265
 266   wxTheApp->m_initialized = (wxTopLevelWindows.Number() > 0);
 267
 268   int retValue = 0;
 269
 270   if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun();
 271
 272   wxTheApp->DeletePendingObjects();
 273
 274   wxTheApp->OnExit();
 275
 276   wxApp::CommonCleanUp();
 277
 278   return retValue;
 279 };