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     wxMacAutoreleasePool autoreleasepool;
  54     // a pointer to the event is returned if there is one, or nil if not
  55     return [[NSApplication sharedApplication]
  56             nextEventMatchingMask: NSAnyEventMask
  57             untilDate: nil
  58             inMode: NSDefaultRunLoopMode
  59             dequeue: NO];
  60 }
  61
  62 bool wxGUIEventLoop::Dispatch()
  63 {
  64     if ( !wxTheApp )
  65         return false;
  66
  67     wxMacAutoreleasePool autoreleasepool;
  68
  69     if(NSEvent *event = [NSApp
  70                 nextEventMatchingMask:NSAnyEventMask
  71                 untilDate:[NSDate dateWithTimeIntervalSinceNow: m_sleepTime]
  72                 inMode:NSDefaultRunLoopMode
  73                 dequeue: YES])
  74     {
  75         m_sleepTime = 0.0;
  76         [NSApp sendEvent: event];
  77     }
  78     else
  79     {
  80         if ( wxTheApp->ProcessIdle() )
  81             m_sleepTime = 0.0 ;
  82         else
  83         {
  84             m_sleepTime = 1.0;
  85 #if wxUSE_THREADS
  86             wxMutexGuiLeave();
  87             wxMilliSleep(20);
  88             wxMutexGuiEnter();
  89 #endif
  90         }
  91     }
  92
  93     return true;
  94 }
  95
  96 int wxGUIEventLoop::DispatchTimeout(unsigned long timeout)
  97 {
  98     wxMacAutoreleasePool autoreleasepool;
  99
 100     NSEvent *event = [NSApp
 101                 nextEventMatchingMask:NSAnyEventMask
 102                 untilDate:[NSDate dateWithTimeIntervalSinceNow: timeout/1000]
 103                 inMode:NSDefaultRunLoopMode
 104                 dequeue: YES];
 105     if ( !event )
 106         return -1;
 107
 108     [NSApp sendEvent: event];
 109
 110     return true;
 111 }