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 #if wxUSE_GUI
  35 #include "wx/nonownedwnd.h"
  36 #endif
  37
  38 #include "wx/osx/private.h"
  39
  40 // ============================================================================
  41 // wxEventLoop implementation
  42 // ============================================================================
  43
  44 wxGUIEventLoop::wxGUIEventLoop()
  45 {
  46 }
  47
  48 static void DispatchAndReleaseEvent(EventRef theEvent)
  49 {
  50     if ( wxTheApp )
  51         wxTheApp->MacSetCurrentEvent( theEvent, NULL );
  52
  53     OSStatus status = SendEventToEventTarget(theEvent, GetEventDispatcherTarget());
  54     if (status == eventNotHandledErr && wxTheApp)
  55         wxTheApp->MacHandleUnhandledEvent(theEvent);
  56
  57     ReleaseEvent( theEvent );
  58 }
  59
  60 int wxGUIEventLoop::DoDispatchTimeout(unsigned long timeout)
  61 {
  62     wxMacAutoreleasePool autoreleasepool;
  63
  64     EventRef event;
  65     OSStatus status = ReceiveNextEvent(0, NULL, timeout/1000, true, &event);
  66     switch ( status )
  67     {
  68         default:
  69             wxFAIL_MSG( "unexpected ReceiveNextEvent() error" );
  70             // fall through
  71
  72         case eventLoopTimedOutErr:
  73             return -1;
  74
  75         case eventLoopQuitErr:
  76             // according to QA1061 this may also occur
  77             // when a WakeUp Process is executed
  78             return 0;
  79
  80         case noErr:
  81             DispatchAndReleaseEvent(event);
  82             return 1;
  83     }
  84 }
  85
  86 void wxGUIEventLoop::DoRun()
  87 {
  88     wxMacAutoreleasePool autoreleasepool;
  89     RunApplicationEventLoop();
  90 }
  91
  92 void wxGUIEventLoop::DoStop()
  93 {
  94     QuitApplicationEventLoop();
  95 }
  96
  97 wxModalEventLoop::wxModalEventLoop(wxWindow *winModal)
  98 {
  99     m_modalWindow = dynamic_cast<wxNonOwnedWindow*> (winModal);
 100     wxASSERT_MSG( m_modalWindow != NULL, "must pass in a toplevel window for modal event loop" );
 101 }
 102
 103 void wxModalEventLoop::DoRun()
 104 {
 105     wxMacAutoreleasePool autoreleasepool;
 106     WindowRef windowRef = m_modalWindow->GetWXWindow();
 107
 108     WindowGroupRef windowGroup = NULL;
 109     WindowGroupRef formerParentGroup = NULL;
 110     bool resetGroupParent = false;
 111
 112     // make sure modal dialogs are in the right layer so that they are not covered
 113
 114     if ( m_modalWindow->GetParent() == NULL )
 115     {
 116         windowGroup = GetWindowGroup(windowRef) ;
 117         if ( windowGroup != GetWindowGroupOfClass( kMovableModalWindowClass ) )
 118         {
 119             formerParentGroup = GetWindowGroupParent( windowGroup );
 120             SetWindowGroupParent( windowGroup, GetWindowGroupOfClass( kMovableModalWindowClass ) );
 121             resetGroupParent = true;
 122         }
 123     }
 124
 125     m_modalWindow->SetFocus();
 126
 127     RunAppModalLoopForWindow(windowRef);
 128
 129     if ( resetGroupParent )
 130     {
 131         SetWindowGroupParent( windowGroup , formerParentGroup );
 132     }
 133
 134 }
 135
 136 void wxModalEventLoop::DoStop()
 137 {
 138     wxMacAutoreleasePool autoreleasepool;
 139     WindowRef theWindow = m_modalWindow->GetWXWindow();
 140     QuitAppModalLoopForWindow(theWindow);
 141 }
 142
 143