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::WakeUp()
  87 {
  88     OSStatus err = noErr;
  89     wxMacCarbonEvent wakeupEvent;
  90     wakeupEvent.Create( 'WXMC', 'WXMC', GetCurrentEventTime(),
  91                         kEventAttributeNone );
  92     err = PostEventToQueue(GetMainEventQueue(), wakeupEvent,
  93                             kEventPriorityHigh );
  94 }
  95
  96 void wxGUIEventLoop::OSXDoRun()
  97 {
  98     wxMacAutoreleasePool autoreleasepool;
  99     RunApplicationEventLoop();
 100 }
 101
 102 void wxGUIEventLoop::OSXDoStop()
 103 {
 104     QuitApplicationEventLoop();
 105 }
 106
 107 CFRunLoopRef wxGUIEventLoop::CFGetCurrentRunLoop() const
 108 {
 109     return wxCFEventLoop::CFGetCurrentRunLoop();
 110 }
 111
 112 // TODO move into a evtloop_osx.cpp
 113
 114 wxModalEventLoop::wxModalEventLoop(wxWindow *modalWindow)
 115 {
 116     m_modalWindow = wxDynamicCast(modalWindow, wxNonOwnedWindow);
 117     wxASSERT_MSG( m_modalWindow != NULL, "must pass in a toplevel window for modal event loop" );
 118     m_modalNativeWindow = m_modalWindow->GetWXWindow();
 119 }
 120
 121 wxModalEventLoop::wxModalEventLoop(WXWindow modalNativeWindow)
 122 {
 123     m_modalWindow = NULL;
 124     wxASSERT_MSG( modalNativeWindow != NULL, "must pass in a toplevel window for modal event loop" );
 125     m_modalNativeWindow = modalNativeWindow;
 126 }
 127
 128 // END move into a evtloop_osx.cpp
 129
 130 void wxModalEventLoop::OSXDoRun()
 131 {
 132     wxWindowDisabler disabler(m_modalWindow);
 133     wxMacAutoreleasePool autoreleasepool;
 134
 135     bool resetGroupParent = false;
 136
 137     WindowGroupRef windowGroup = NULL;
 138     WindowGroupRef formerParentGroup = NULL;
 139
 140     // make sure modal dialogs are in the right layer so that they are not covered
 141     if ( m_modalWindow != NULL )
 142     {
 143         if ( m_modalWindow->GetParent() == NULL )
 144         {
 145             windowGroup = GetWindowGroup(m_modalNativeWindow) ;
 146             if ( windowGroup != GetWindowGroupOfClass( kMovableModalWindowClass ) )
 147             {
 148                 formerParentGroup = GetWindowGroupParent( windowGroup );
 149                 SetWindowGroupParent( windowGroup, GetWindowGroupOfClass( kMovableModalWindowClass ) );
 150                 resetGroupParent = true;
 151             }
 152         }
 153     }
 154
 155     m_modalWindow->SetFocus();
 156
 157     RunAppModalLoopForWindow(m_modalNativeWindow);
 158
 159     if ( resetGroupParent )
 160     {
 161         SetWindowGroupParent( windowGroup , formerParentGroup );
 162     }
 163
 164 }
 165
 166 void wxModalEventLoop::OSXDoStop()
 167 {
 168     wxMacAutoreleasePool autoreleasepool;
 169     QuitAppModalLoopForWindow(m_modalNativeWindow);
 170 }
 171
 172