src/common/timerimpl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/timerimpl.cpp
   3 // Purpose:     wxTimerBase implementation
   4 // Author:      Julian Smart, Guillermo Rodriguez, Vadim Zeitlin
   5 // Modified by: VZ: extracted all non-wxTimer stuff in stopwatch.cpp (20.06.03)
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 //              (c) 1999 Guillermo Rodriguez <guille@iies.es>
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 // ============================================================================
  14 // declarations
  15 // ============================================================================
  16
  17 // ----------------------------------------------------------------------------
  18 // wxWin headers
  19 // ----------------------------------------------------------------------------
  20
  21 // For compilers that support precompilation, includes "wx.h".
  22 #include "wx/wxprec.h"
  23
  24 #ifdef __BORLANDC__
  25     #pragma hdrstop
  26 #endif
  27
  28 #if wxUSE_TIMER
  29
  30 #include "wx/private/timer.h"
  31 #include "wx/utils.h"               // for wxNewId()
  32 #include "wx/thread.h"
  33
  34 wxTimerImpl::wxTimerImpl(wxTimer *timer)
  35 {
  36     m_timer = timer;
  37     m_owner = NULL;
  38     m_idTimer = wxID_ANY;
  39     m_milli = 0;
  40     m_oneShot = false;
  41 }
  42
  43 void wxTimerImpl::SetOwner(wxEvtHandler *owner, int timerid)
  44 {
  45     m_owner = owner;
  46     m_idTimer = timerid == wxID_ANY ? wxNewId() : timerid;
  47 }
  48
  49 void wxTimerImpl::SendEvent()
  50 {
  51     wxTimerEvent event(*m_timer);
  52     (void)m_owner->SafelyProcessEvent(event);
  53 }
  54
  55 bool wxTimerImpl::Start(int milliseconds, bool oneShot)
  56 {
  57     // under MSW timers only work when they're started from the main thread so
  58     // let the caller know about it
  59 #if wxUSE_THREADS
  60     wxASSERT_MSG( wxThread::IsMain(),
  61                   wxT("timer can only be started from the main thread") );
  62 #endif // wxUSE_THREADS
  63
  64     if ( IsRunning() )
  65     {
  66         // not stopping the already running timer might work for some
  67         // platforms (no problems under MSW) but leads to mysterious crashes
  68         // on the others (GTK), so to be on the safe side do it here
  69         Stop();
  70     }
  71
  72     if ( milliseconds != -1 )
  73     {
  74         m_milli = milliseconds;
  75     }
  76
  77     m_oneShot = oneShot;
  78
  79     return true;
  80 }
  81
  82
  83 #endif // wxUSE_TIMER
  84