src/qt/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Purpose:     wxApp
   4 // Author:      AUTHOR
   5 // Modified by:
   6 // Created:     ??/??/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) AUTHOR
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "app.h"
  14 #endif
  15
  16 #include "wx/frame.h"
  17 #include "wx/app.h"
  18 #include "wx/utils.h"
  19 #include "wx/gdicmn.h"
  20 #include "wx/pen.h"
  21 #include "wx/brush.h"
  22 #include "wx/cursor.h"
  23 #include "wx/icon.h"
  24 #include "wx/palette.h"
  25 #include "wx/dc.h"
  26 #include "wx/dialog.h"
  27 #include "wx/msgdlg.h"
  28 #include "wx/log.h"
  29 #include "wx/module.h"
  30
  31 #if USE_WX_RESOURCES
  32 #include "wx/resource.h"
  33 #endif
  34
  35 #include <string.h>
  36
  37 #if defined(__WIN95__) && !defined(__GNUWIN32__)
  38 extern char *wxBuffer;
  39 extern wxList wxPendingDelete;
  40
  41 wxApp *wxTheApp = NULL;
  42
  43 #if !USE_SHARED_LIBRARY
  44 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
  45 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
  46     EVT_IDLE(wxApp::OnIdle)
  47 END_EVENT_TABLE()
  48 #endif
  49
  50 long wxApp::sm_lastMessageTime = 0;
  51
  52 void wxApp::CommonInit()
  53 {
  54 #ifdef __WXMSW__
  55   wxBuffer = new char[1500];
  56 #else
  57   wxBuffer = new char[BUFSIZ + 512];
  58 #endif
  59
  60   wxClassInfo::InitializeClasses();
  61
  62   wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
  63   wxTheColourDatabase->Initialize();
  64   wxInitializeStockObjects();
  65
  66 #if USE_WX_RESOURCES
  67   wxInitializeResourceSystem();
  68 #endif
  69
  70   // For PostScript printing
  71 #if USE_POSTSCRIPT
  72   wxInitializePrintSetupData();
  73   wxThePrintPaperDatabase = new wxPrintPaperDatabase;
  74   wxThePrintPaperDatabase->CreateDatabase();
  75 #endif
  76
  77   wxBitmap::InitStandardHandlers();
  78
  79   wxModule::RegisterModules();
  80   wxASSERT( wxModule::InitializeModules() == TRUE );
  81 }
  82
  83 void wxApp::CommonCleanUp()
  84 {
  85   wxModule::CleanUpModules();
  86
  87 #if USE_WX_RESOURCES
  88   wxCleanUpResourceSystem();
  89 #endif
  90
  91   wxDeleteStockObjects() ;
  92
  93   // Destroy all GDI lists, etc.
  94   delete wxTheBrushList;
  95   wxTheBrushList = NULL;
  96
  97   delete wxThePenList;
  98   wxThePenList = NULL;
  99
 100   delete wxTheFontList;
 101   wxTheFontList = NULL;
 102
 103   delete wxTheBitmapList;
 104   wxTheBitmapList = NULL;
 105
 106   delete wxTheColourDatabase;
 107   wxTheColourDatabase = NULL;
 108
 109 #if USE_POSTSCRIPT
 110   wxInitializePrintSetupData(FALSE);
 111   delete wxThePrintPaperDatabase;
 112   wxThePrintPaperDatabase = NULL;
 113 #endif
 114
 115   wxBitmap::CleanUpHandlers();
 116
 117   delete[] wxBuffer;
 118   wxBuffer = NULL;
 119
 120   // do it as the very last thing because everything else can log messages
 121   delete wxLog::SetActiveTarget(NULL);
 122 }
 123
 124 int wxEntry( int argc, char *argv[] )
 125 {
 126   wxClassInfo::InitializeClasses();
 127
 128 #if (WXDEBUG && USE_MEMORY_TRACING) || USE_DEBUG_CONTEXT
 129
 130 #if !defined(_WINDLL)
 131   streambuf* sBuf = new wxDebugStreamBuf;
 132 #else
 133   streambuf* sBuf = NULL;
 134 #endif
 135   ostream* oStr = new ostream(sBuf) ;
 136   wxDebugContext::SetStream(oStr, sBuf);
 137
 138 #endif
 139
 140   if (!wxTheApp)
 141   {
 142     if (!wxApp::GetInitializerFunction())
 143     {
 144       printf( "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
 145       return 0;
 146     };
 147
 148         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 149   };
 150
 151   if (!wxTheApp)
 152   {
 153     printf( "wxWindows error: wxTheApp == NULL\n" );
 154     return 0;
 155   };
 156
 157   wxTheApp->argc = argc;
 158   wxTheApp->argv = argv;
 159
 160   // TODO: your platform-specific initialization.
 161
 162   wxApp::CommonInit();
 163
 164   // GUI-specific initialization, such as creating an app context.
 165   wxTheApp->OnInitGui();
 166
 167   // Here frames insert themselves automatically
 168   // into wxTopLevelWindows by getting created
 169   // in OnInit().
 170
 171   if (!wxTheApp->OnInit()) return 0;
 172
 173   wxTheApp->m_initialized = (wxTopLevelWindows.Number() > 0);
 174
 175   int retValue = 0;
 176
 177   if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun();
 178
 179   wxTheApp->DeletePendingObjects();
 180
 181   wxTheApp->OnExit();
 182
 183   wxApp::CommonCleanUp();
 184
 185 #if (WXDEBUG && USE_MEMORY_TRACING) || USE_DEBUG_CONTEXT
 186   // At this point we want to check if there are any memory
 187   // blocks that aren't part of the wxDebugContext itself,
 188   // as a special case. Then when dumping we need to ignore
 189   // wxDebugContext, too.
 190   if (wxDebugContext::CountObjectsLeft() > 0)
 191   {
 192     wxTrace("There were memory leaks.\n");
 193     wxDebugContext::Dump();
 194     wxDebugContext::PrintStatistics();
 195   }
 196   wxDebugContext::SetStream(NULL, NULL);
 197 #endif
 198
 199   return retValue;
 200 };
 201
 202 // Static member initialization
 203 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
 204
 205 wxApp::wxApp()
 206 {
 207   m_topWindow = NULL;
 208   wxTheApp = this;
 209   m_className = "";
 210   m_wantDebugOutput = TRUE ;
 211   m_appName = "";
 212   argc = 0;
 213   argv = NULL;
 214 #ifdef __WXMSW__
 215   m_printMode = wxPRINT_WINDOWS;
 216 #else
 217   m_printMode = wxPRINT_POSTSCRIPT;
 218 #endif
 219   m_exitOnFrameDelete = TRUE;
 220   m_auto3D = TRUE;
 221 }
 222
 223 bool wxApp::Initialized()
 224 {
 225   if (GetTopWindow())
 226     return TRUE;
 227   else
 228     return FALSE;
 229 }
 230
 231 int wxApp::MainLoop()
 232 {
 233   m_keepGoing = TRUE;
 234
 235 /* TODO: implement your main loop here, calling ProcessIdle in idle time.
 236   while (m_keepGoing)
 237   {
 238     while (!::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 239            ProcessIdle()) {}
 240     if (!DoMessage())
 241       m_keepGoing = FALSE;
 242   }
 243 */
 244
 245   return 0;
 246 }
 247
 248 // Returns TRUE if more time is needed.
 249 bool wxApp::ProcessIdle()
 250 {
 251     wxIdleEvent event;
 252     event.SetEventObject(this);
 253     ProcessEvent(event);
 254
 255     return event.MoreRequested();
 256 }
 257
 258 void wxApp::ExitMainLoop()
 259 {
 260   m_keepGoing = FALSE;
 261 }
 262
 263 // Is a message/event pending?
 264 bool wxApp::Pending()
 265 {
 266 /* TODO.
 267  */
 268   return FALSE;
 269 }
 270
 271 // Dispatch a message.
 272 void wxApp::Dispatch()
 273 {
 274 /* TODO.
 275  */
 276 }
 277
 278 void wxApp::OnIdle(wxIdleEvent& event)
 279 {
 280   static bool inOnIdle = FALSE;
 281
 282   // Avoid recursion (via ProcessEvent default case)
 283   if (inOnIdle)
 284     return;
 285
 286   inOnIdle = TRUE;
 287
 288   // 'Garbage' collection of windows deleted with Close().
 289   DeletePendingObjects();
 290
 291   // flush the logged messages if any
 292   wxLog *pLog = wxLog::GetActiveTarget();
 293   if ( pLog != NULL && pLog->HasPendingMessages() )
 294     pLog->Flush();
 295
 296   // Send OnIdle events to all windows
 297   bool needMore = SendIdleEvents();
 298
 299   if (needMore)
 300     event.RequestMore(TRUE);
 301
 302   inOnIdle = FALSE;
 303 }
 304
 305 // Send idle event to all top-level windows
 306 bool wxApp::SendIdleEvents()
 307 {
 308     bool needMore = FALSE;
 309         wxNode* node = wxTopLevelWindows.First();
 310         while (node)
 311         {
 312                 wxWindow* win = (wxWindow*) node->Data();
 313                 if (SendIdleEvents(win))
 314             needMore = TRUE;
 315
 316                 node = node->Next();
 317         }
 318     return needMore;
 319 }
 320
 321 // Send idle event to window and all subwindows
 322 bool wxApp::SendIdleEvents(wxWindow* win)
 323 {
 324     bool needMore = FALSE;
 325
 326         wxIdleEvent event;
 327         event.SetEventObject(win);
 328         win->ProcessEvent(event);
 329
 330     if (event.MoreRequested())
 331         needMore = TRUE;
 332
 333         wxNode* node = win->GetChildren()->First();
 334         while (node)
 335         {
 336                 wxWindow* win = (wxWindow*) node->Data();
 337                 if (SendIdleEvents(win))
 338             needMore = TRUE;
 339
 340                 node = node->Next();
 341         }
 342     return needMore ;
 343 }
 344
 345 void wxApp::DeletePendingObjects()
 346 {
 347   wxNode *node = wxPendingDelete.First();
 348   while (node)
 349   {
 350     wxObject *obj = (wxObject *)node->Data();
 351
 352     delete obj;
 353
 354     if (wxPendingDelete.Member(obj))
 355       delete node;
 356
 357     // Deleting one object may have deleted other pending
 358     // objects, so start from beginning of list again.
 359     node = wxPendingDelete.First();
 360   }
 361 }
 362
 363 wxLog* wxApp::CreateLogTarget()
 364 {
 365     return new wxLogGui;
 366 }
 367
 368 wxWindow* wxApp::GetTopWindow() const
 369 {
 370     if (m_topWindow)
 371         return m_topWindow;
 372     else if (wxTopLevelWindows.Number() > 0)
 373         return (wxWindow*) wxTopLevelWindows.First()->Data();
 374     else
 375         return NULL;
 376 }
 377
 378 void wxExit()
 379 {
 380   wxApp::CommonCleanUp();
 381 /*
 382  * TODO: Exit in some platform-specific way. Not recommended that the app calls this:
 383  * only for emergencies.
 384  */
 385 }
 386
 387 // Yield to other processes
 388 bool wxYield()
 389 {
 390   /*
 391    * TODO
 392    */
 393   return TRUE;
 394 }
 395