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     #include "wx/nonownedwnd.h"
  33 #endif // WX_PRECOMP
  34
  35 #include "wx/osx/private.h"
  36
  37 // ============================================================================
  38 // wxEventLoop implementation
  39 // ============================================================================
  40
  41 wxGUIEventLoop::wxGUIEventLoop()
  42 {
  43 }
  44
  45 static void DispatchAndReleaseEvent(EventRef theEvent)
  46 {
  47     if ( wxTheApp )
  48         wxTheApp->MacSetCurrentEvent( theEvent, NULL );
  49
  50     OSStatus status = SendEventToEventTarget(theEvent, GetEventDispatcherTarget());
  51     if (status == eventNotHandledErr && wxTheApp)
  52         wxTheApp->MacHandleUnhandledEvent(theEvent);
  53
  54     ReleaseEvent( theEvent );
  55 }
  56
  57 int wxGUIEventLoop::DoDispatchTimeout(unsigned long timeout)
  58 {
  59     wxMacAutoreleasePool autoreleasepool;
  60
  61     EventRef event;
  62     OSStatus status = ReceiveNextEvent(0, NULL, timeout/1000, true, &event);
  63     switch ( status )
  64     {
  65         default:
  66             wxFAIL_MSG( "unexpected ReceiveNextEvent() error" );
  67             // fall through
  68
  69         case eventLoopTimedOutErr:
  70             return -1;
  71
  72         case eventLoopQuitErr:
  73             // according to QA1061 this may also occur
  74             // when a WakeUp Process is executed
  75             return 0;
  76
  77         case noErr:
  78             DispatchAndReleaseEvent(event);
  79             return 1;
  80     }
  81 }
  82
  83 void wxGUIEventLoop::DoRun()
  84 {
  85     wxMacAutoreleasePool autoreleasepool;
  86     RunApplicationEventLoop();
  87 }
  88
  89 void wxGUIEventLoop::DoStop()
  90 {
  91     QuitApplicationEventLoop();
  92 }
  93
  94 void wxModalEventLoop::DoRun()
  95 {
  96     wxMacAutoreleasePool autoreleasepool;
  97     WindowRef windowRef = m_modalWindow->GetWXWindow();
  98
  99     WindowGroupRef windowGroup = NULL;
 100     WindowGroupRef formerParentGroup = NULL;
 101     bool resetGroupParent = false;
 102
 103     // make sure modal dialogs are in the right layer so that they are not covered
 104
 105     if ( m_modalWindow->GetParent() == NULL )
 106     {
 107         windowGroup = GetWindowGroup(windowRef) ;
 108         if ( windowGroup != GetWindowGroupOfClass( kMovableModalWindowClass ) )
 109         {
 110             formerParentGroup = GetWindowGroupParent( windowGroup );
 111             SetWindowGroupParent( windowGroup, GetWindowGroupOfClass( kMovableModalWindowClass ) );
 112             resetGroupParent = true;
 113         }
 114     }
 115
 116     m_modalWindow->SetFocus();
 117
 118     RunAppModalLoopForWindow(windowRef);
 119
 120     if ( resetGroupParent )
 121     {
 122         SetWindowGroupParent( windowGroup , formerParentGroup );
 123     }
 124
 125 }
 126
 127 void wxModalEventLoop::DoStop()
 128 {
 129     wxMacAutoreleasePool autoreleasepool;
 130     WindowRef theWindow = m_modalWindow->GetWXWindow();
 131     QuitAppModalLoopForWindow(theWindow);
 132 }
 133
 134