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
  28 #ifndef WX_PRECOMP
  29     #include "wx/app.h"
  30 #endif // WX_PRECOMP
  31
  32 #include "wx/evtloop.h"
  33
  34 #include "wx/osx/private.h"
  35
  36 // ============================================================================
  37 // wxEventLoop implementation
  38 // ============================================================================
  39
  40 wxGUIEventLoop::wxGUIEventLoop()
  41 {
  42     m_sleepTime = 0.0;
  43 }
  44
  45 void wxGUIEventLoop::WakeUp()
  46 {
  47     extern void wxMacWakeUp();
  48
  49     wxMacWakeUp();
  50 }
  51
  52 bool wxGUIEventLoop::Pending() const
  53 {
  54     wxMacAutoreleasePool autoreleasepool;
  55     // a pointer to the event is returned if there is one, or nil if not
  56     return [[NSApplication sharedApplication]
  57             nextEventMatchingMask: NSAnyEventMask
  58             untilDate: nil
  59             inMode: NSDefaultRunLoopMode
  60             dequeue: NO];
  61 }
  62
  63 bool wxGUIEventLoop::Dispatch()
  64 {
  65     if ( !wxTheApp )
  66         return false;
  67
  68     wxMacAutoreleasePool autoreleasepool;
  69
  70     if(NSEvent *event = [NSApp
  71                 nextEventMatchingMask:NSAnyEventMask
  72                 untilDate:[NSDate dateWithTimeIntervalSinceNow: m_sleepTime]
  73                 inMode:NSDefaultRunLoopMode
  74                 dequeue: YES])
  75     {
  76         m_sleepTime = 0.0;
  77         [NSApp sendEvent: event];
  78     }
  79     else
  80     {
  81         if ( wxTheApp->ProcessIdle() )
  82             m_sleepTime = 0.0 ;
  83         else
  84         {
  85             m_sleepTime = 1.0;
  86 #if wxUSE_THREADS
  87             wxMutexGuiLeave();
  88             wxMilliSleep(20);
  89             wxMutexGuiEnter();
  90 #endif
  91         }
  92     }
  93
  94     return true;
  95 }
  96
  97 int wxGUIEventLoop::DispatchTimeout(unsigned long timeout)
  98 {
  99     wxMacAutoreleasePool autoreleasepool;
 100
 101     NSEvent *event = [NSApp
 102                 nextEventMatchingMask:NSAnyEventMask
 103                 untilDate:[NSDate dateWithTimeIntervalSinceNow: timeout/1000]
 104                 inMode:NSDefaultRunLoopMode
 105                 dequeue: YES];
 106     if ( !event )
 107         return -1;
 108
 109     [NSApp sendEvent: event];
 110
 111     return true;
 112 }