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