-// this is a temporary hack and will be replaced by using wxEventLoop in the
-// future
-//
-// it is needed to allow other event loops (currently only one: the modal
-// dialog one) to reset the OnIdle() semaphore because otherwise OnIdle()
-// wouldn't do anything while a modal dialog shown from OnIdle() call is shown.
-bool wxIsInOnIdleFlag = FALSE;
-
-void wxApp::OnIdle(wxIdleEvent& event)
-{
- // Avoid recursion (via ProcessEvent default case)
- if ( wxIsInOnIdleFlag )
- return;
-
- wxIsInOnIdleFlag = TRUE;
-
- // If there are pending events, we must process them: pending events
- // are either events to the threads other than main or events posted
- // with wxPostEvent() functions
- // GRG: I have moved this here so that all pending events are processed
- // before starting to delete any objects. This behaves better (in
- // particular, wrt wxPostEvent) and is coherent with wxGTK's current
- // behaviour. Changed Feb/2000 before 2.1.14
- ProcessPendingEvents();
-
- // 'Garbage' collection of windows deleted with Close().
- DeletePendingObjects();
-
-#if wxUSE_LOG
- // flush the logged messages if any
- wxLog::FlushActive();
-#endif // wxUSE_LOG
-
-#if wxUSE_DC_CACHEING
- // automated DC cache management: clear the cached DCs and bitmap
- // if it's likely that the app has finished with them, that is, we
- // get an idle event and we're not dragging anything.
- if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON))
- wxDC::ClearCache();
-#endif // wxUSE_DC_CACHEING
-
- // Send OnIdle events to all windows
- if ( SendIdleEvents() )
- {
- // SendIdleEvents() returns TRUE if at least one window requested more
- // idle events
- event.RequestMore(TRUE);
- }
-
- wxIsInOnIdleFlag = FALSE;
-}
-
-// Send idle event to all top-level windows
-bool wxApp::SendIdleEvents()
-{
- bool needMore = FALSE;
-
- wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
- while (node)
- {
- wxWindow* win = node->GetData();
- if (SendIdleEvents(win))
- needMore = TRUE;
- node = node->GetNext();
- }
-
- return needMore;
-}
-
-// Send idle event to window and all subwindows
-bool wxApp::SendIdleEvents(wxWindow* win)
-{
- wxIdleEvent event;
- event.SetEventObject(win);
- win->GetEventHandler()->ProcessEvent(event);
-
- bool needMore = event.MoreRequested();
-
- wxWindowList::Node *node = win->GetChildren().GetFirst();
- while ( node )
- {
- wxWindow *win = node->GetData();
- if (SendIdleEvents(win))
- needMore = TRUE;
-
- node = node->GetNext();
- }
-
- return needMore;
-}
-
-void wxApp::DeletePendingObjects()
-{
- wxNode *node = wxPendingDelete.GetFirst();
- while (node)
- {
- wxObject *obj = node->GetData();
-
- delete obj;
-
- if (wxPendingDelete.Member(obj))
- delete node;
-
- // Deleting one object may have deleted other pending
- // objects, so start from beginning of list again.
- node = wxPendingDelete.GetFirst();
- }
-}
-
-void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
-{
- if (GetTopWindow())
- GetTopWindow()->Close(TRUE);
-}
-
-// Default behaviour: close the application with prompts. The
-// user can veto the close, and therefore the end session.
-void wxApp::OnQueryEndSession(wxCloseEvent& event)
-{
- if (GetTopWindow())
- {
- if (!GetTopWindow()->Close(!event.CanVeto()))
- event.Veto(TRUE);
- }
-}
projects / wxWidgets.git / blobdiff