src/osx/carbon/evtloop.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/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 #ifndef WX_PRECOMP
  30     #include "wx/app.h"
  31     #include "wx/log.h"
  32 #endif // WX_PRECOMP
  33
  34 #include "wx/osx/private.h"
  35
  36 // ============================================================================
  37 // wxEventLoop implementation
  38 // ============================================================================
  39
  40 wxGUIEventLoop::wxGUIEventLoop()
  41 {
  42 }
  43
  44 static void DispatchAndReleaseEvent(EventRef theEvent)
  45 {
  46     if ( wxTheApp )
  47         wxTheApp->MacSetCurrentEvent( theEvent, NULL );
  48
  49     OSStatus status = SendEventToEventTarget(theEvent, GetEventDispatcherTarget());
  50     if (status == eventNotHandledErr && wxTheApp)
  51         wxTheApp->MacHandleUnhandledEvent(theEvent);
  52
  53     ReleaseEvent( theEvent );
  54 }
  55
  56 int wxGUIEventLoop::DoDispatchTimeout(unsigned long timeout)
  57 {
  58     wxMacAutoreleasePool autoreleasepool;
  59
  60     EventRef event;
  61     OSStatus status = ReceiveNextEvent(0, NULL, timeout/1000, true, &event);
  62     switch ( status )
  63     {
  64         default:
  65             wxFAIL_MSG( "unexpected ReceiveNextEvent() error" );
  66             // fall through
  67
  68         case eventLoopTimedOutErr:
  69             return -1;
  70
  71         case eventLoopQuitErr:
  72             // according to QA1061 this may also occur
  73             // when a WakeUp Process is executed
  74             return 0;
  75
  76         case noErr:
  77             DispatchAndReleaseEvent(event);
  78             return 1;
  79     }
  80 }
  81
  82 void wxGUIEventLoop::DoRun()
  83 {
  84     wxMacAutoreleasePool autoreleasepool;
  85     RunApplicationEventLoop();
  86 }
  87
  88 void wxGUIEventLoop::DoStop()
  89 {
  90     QuitApplicationEventLoop();
  91 }
  92
  93 void wxModalEventLoop::DoRun()
  94 {
  95     wxMacAutoreleasePool autoreleasepool;
  96     WindowRef windowRef = m_modalWindow->GetWXWindow();
  97
  98     WindowGroupRef windowGroup = NULL;
  99     WindowGroupRef formerParentGroup = NULL;
 100     bool resetGroupParent = false;
 101
 102     // make sure modal dialogs are in the right layer so that they are not covered
 103
 104     if ( m_modalWindow->GetParent() == NULL )
 105     {
 106         windowGroup = GetWindowGroup(windowRef) ;
 107         if ( windowGroup != GetWindowGroupOfClass( kMovableModalWindowClass ) )
 108         {
 109             formerParentGroup = GetWindowGroupParent( windowGroup );
 110             SetWindowGroupParent( windowGroup, GetWindowGroupOfClass( kMovableModalWindowClass ) );
 111             resetGroupParent = true;
 112         }
 113     }
 114
 115     m_modalWindow->SetFocus();
 116
 117     RunAppModalLoopForWindow(windowRef);
 118
 119     if ( resetGroupParent )
 120     {
 121         SetWindowGroupParent( windowGroup , formerParentGroup );
 122     }
 123
 124 }
 125
 126 void wxModalEventLoop::DoStop()
 127 {
 128     wxMacAutoreleasePool autoreleasepool;
 129     WindowRef theWindow = m_modalWindow->GetWXWindow();
 130     QuitAppModalLoopForWindow(theWindow);
 131 }
 132
 133