| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: gtk/timer.cpp |
| 3 | // Purpose: wxTimer implementation |
| 4 | // Author: Robert Roebling |
| 5 | // Id: $Id$ |
| 6 | // Copyright: (c) 1998 Robert Roebling |
| 7 | // Licence: wxWindows licence |
| 8 | ///////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | #include "wx/wxprec.h" |
| 11 | |
| 12 | #if wxUSE_TIMER |
| 13 | |
| 14 | #include "wx/gtk1/private/timer.h" |
| 15 | |
| 16 | #include "gtk/gtk.h" |
| 17 | |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | // wxTimer |
| 20 | // ---------------------------------------------------------------------------- |
| 21 | |
| 22 | extern "C" { |
| 23 | static gint timeout_callback(void *data) |
| 24 | { |
| 25 | wxTimerImpl * const timer = (wxTimerImpl *)data; |
| 26 | |
| 27 | const bool keepGoing = !timer->IsOneShot(); |
| 28 | if ( !keepGoing ) |
| 29 | timer->Stop(); |
| 30 | |
| 31 | // When getting called from GDK's timer handler we |
| 32 | // are no longer within GDK's grab on the GUI |
| 33 | // thread so we must lock it here ourselves. |
| 34 | gdk_threads_enter(); |
| 35 | |
| 36 | timer->Notify(); |
| 37 | |
| 38 | // Release lock again. |
| 39 | gdk_threads_leave(); |
| 40 | |
| 41 | return keepGoing; |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | bool wxGTKTimerImpl::Start(int millisecs, bool oneShot) |
| 46 | { |
| 47 | if ( !wxTimerImpl::Start(millisecs, oneShot) ) |
| 48 | return false; |
| 49 | |
| 50 | wxASSERT_MSG( m_tag == -1, _T("shouldn't be still running") ); |
| 51 | |
| 52 | m_tag = gtk_timeout_add( m_milli, timeout_callback, this ); |
| 53 | |
| 54 | return true; |
| 55 | } |
| 56 | |
| 57 | void wxGTKTimerImpl::Stop() |
| 58 | { |
| 59 | wxASSERT_MSG( m_tag != -1, _T("should be running") ); |
| 60 | |
| 61 | gtk_timeout_remove( m_tag ); |
| 62 | m_tag = -1; |
| 63 | } |
| 64 | |
| 65 | #endif // wxUSE_TIMER |
| 66 | |