src/osx/cocoa/evtloop.mm

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/cocoa/evtloop.mm
   3 // Purpose:     implementation of wxEventLoop for OS X
   4 // Author:      Vadim Zeitlin, Stefan Csomor
   5 // Modified by:
   6 // Created:     2006-01-12
   7 // RCS-ID:      $Id: evtloop.cpp 54845 2008-07-30 14:52:41Z SC $
   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 #ifndef WX_PRECOMP
  30     #include "wx/app.h"
  31 #endif // WX_PRECOMP
  32
  33 #include "wx/osx/private.h"
  34
  35 // ============================================================================
  36 // wxEventLoop implementation
  37 // ============================================================================
  38
  39 wxGUIEventLoop::wxGUIEventLoop()
  40 {
  41     m_sleepTime = 0.0;
  42 }
  43
  44 void wxGUIEventLoop::WakeUp()
  45 {
  46     extern void wxMacWakeUp();
  47
  48     wxMacWakeUp();
  49 }
  50
  51 bool wxGUIEventLoop::Pending() const
  52 {
  53     // a pointer to the event is returned if there is one, or nil if not
  54     return [[NSApplication sharedApplication]
  55             nextEventMatchingMask: NSAnyEventMask
  56             untilDate: nil
  57             inMode: NSDefaultRunLoopMode
  58             dequeue: NO];
  59 }
  60
  61 bool wxGUIEventLoop::Dispatch()
  62 {
  63     if ( !wxTheApp )
  64         return false;
  65
  66     wxMacAutoreleasePool autoreleasepool;
  67
  68     if(NSEvent *event = [NSApp
  69                 nextEventMatchingMask:NSAnyEventMask
  70                 untilDate:[NSDate dateWithTimeIntervalSinceNow: m_sleepTime]
  71                 inMode:NSDefaultRunLoopMode
  72                 dequeue: YES])
  73     {
  74         m_sleepTime = 0.0;
  75         [NSApp sendEvent: event];
  76     }
  77     else
  78     {
  79         if ( wxTheApp->ProcessIdle() )
  80             m_sleepTime = 0.0 ;
  81         else
  82         {
  83             m_sleepTime = 1.0;
  84 #if wxUSE_THREADS
  85             wxMutexGuiLeave();
  86             wxMilliSleep(20);
  87             wxMutexGuiEnter();
  88 #endif
  89         }
  90     }
  91
  92     return true;
  93 }