src/mac/carbon/evtloop.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        mac/carbon/evtloop.cpp
   3 // Purpose:     implementation of wxEventLoop for wxMac
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     2006-01-12
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2006 Vadim Zeitlin <vadim@wxwindows.org>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // 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 #include "wx/evtloop.h"
  28
  29 #include <Carbon/Carbon.h>
  30
  31 // ============================================================================
  32 // implementation
  33 // ============================================================================
  34
  35 wxEventLoop::wxEventLoop()
  36 {
  37     m_exitcode = 0;
  38 #if !wxMAC_USE_RUN_APP_EVENT_LOOP
  39     m_shouldExit = false;
  40 #endif
  41 }
  42
  43 int wxEventLoop::Run()
  44 {
  45     wxEventLoopActivator activate(this);
  46
  47 #if wxMAC_USE_RUN_APP_EVENT_LOOP
  48     RunApplicationEventLoop();
  49 #else // manual event loop
  50     while ( !m_shouldExit )
  51     {
  52         Dispatch();
  53     }
  54 #endif // auto/manual event loop
  55
  56     return m_exitcode;
  57 }
  58
  59 void wxEventLoop::Exit(int rc)
  60 {
  61     m_exitcode = rc;
  62
  63 #if wxMAC_USE_RUN_APP_EVENT_LOOP
  64     QuitApplicationEventLoop();
  65 #else // manual event loop
  66     m_shouldExit = true;
  67 #endif // auto/manual event loop
  68 }
  69
  70 bool wxEventLoop::Pending() const
  71 {
  72     EventRef theEvent;
  73
  74     return ReceiveNextEvent
  75            (
  76             0,          // we want any event at all so we don't specify neither
  77             NULL,       // the number of event types nor the types themselves
  78             kEventDurationNoWait,
  79             false,      // don't remove the event from queue
  80             &theEvent
  81            ) == noErr;
  82 }
  83
  84 bool wxEventLoop::Dispatch()
  85 {
  86     // TODO: we probably should do the dispatching directly from here but for
  87     //       now it's easier to forward to wxApp which has all the code to do
  88     //       it
  89     if ( !wxTheApp )
  90         return false;
  91
  92     wxTheApp->MacDoOneEvent();
  93     return true;
  94 }
  95