cleanup - reformatting; simplified OnPaint

[wxWidgets.git] / src / mac / carbon / dnd.cpp

diff --git a/src/mac/carbon/dnd.cpp b/src/mac/carbon/dnd.cpp
index 32088eef0f6deea25207f69117d2fdeb92a3f6da..f5212eb4e210e5d007c82f947b17abe3975bcc48 100644 (file)
--- a/src/mac/carbon/dnd.cpp
+++ b/src/mac/carbon/dnd.cpp
@@ -1,92 +1,293 @@
 ///////////////////////////////////////////////////////////////////////////////
 // Name:        dnd.cpp
 ///////////////////////////////////////////////////////////////////////////////
 // Name:        dnd.cpp

-// Purpose:     wxDropTarget, wxDropSource, wxDataObject implementation
-// Author:      AUTHOR
+// Purpose:     wxDropTarget, wxDropSource implementations
+// Author:      Stefan Csomor

 // Modified by:
 // Modified by:

-// Created:     ??/??/98
+// Created:     1998-01-01

 // RCS-ID:      $Id$
 // RCS-ID:      $Id$

-// Copyright:   (c) 1998 AUTHOR
+// Copyright:   (c) 1998 Stefan Csomor

 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "dnd.h"
-#endif
+#include "wx/wxprec.h"
+
+#if wxUSE_DRAG_AND_DROP

 
 #include "wx/dnd.h"
 #include "wx/window.h"
 
 #include "wx/dnd.h"
 #include "wx/window.h"

+#include "wx/toplevel.h"

 #include "wx/app.h"
 #include "wx/gdicmn.h"
 #include "wx/app.h"
 #include "wx/gdicmn.h"

+#include "wx/mac/private.h"
+
+#ifndef __DARWIN__
+    #include <Scrap.h>
+#endif

 
 

-// ----------------------------------------------------------------------------
-// global
-// ----------------------------------------------------------------------------

 
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------

-// wxDropTarget
+// globals

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-wxDropTarget::wxDropTarget()
+typedef struct

 {
 {

-};
-
-wxDropTarget::~wxDropTarget()
-{
-};
+    wxWindow* m_currentTargetWindow;
+    wxDropTarget* m_currentTarget;
+    wxDropSource* m_currentSource;
+}
+MacTrackingGlobals;

 
 

-// ----------------------------------------------------------------------------
-// wxTextDropTarget
-// ----------------------------------------------------------------------------
+MacTrackingGlobals gTrackingGlobals;

 
 

-bool wxTextDropTarget::OnDrop( long x, long y, const void *pData )
-{
-  OnDropText( x, y, (const char*)pData );
-  return TRUE;
-};
+void wxMacEnsureTrackingHandlersInstalled() ;

 
 

-bool wxTextDropTarget::OnDropText( long x, long y, const char *psz )
-{
-  printf( "Got dropped text: %s.\n", psz );
-  printf( "At x: %d, y: %d.\n", (int)x, (int)y );
-  return TRUE;
-};
+//----------------------------------------------------------------------------
+// wxDropTarget
+//----------------------------------------------------------------------------

 
 

-size_t wxTextDropTarget::GetFormatCount() const
+wxDropTarget::wxDropTarget( wxDataObject *data )
+            : wxDropTargetBase( data )

 {
 {

-  return 1;
+    wxMacEnsureTrackingHandlersInstalled() ;

 }
 
 }
 

-wxDataFormat wxTextDropTarget::GetFormat(size_t WXUNUSED(n)) const
+wxDragResult wxDropTarget::OnDragOver( wxCoord WXUNUSED(x),
+                                       wxCoord WXUNUSED(y),
+                                       wxDragResult def )

 {
 {

-  return wxDF_TEXT;
+    return CurrentDragHasSupportedFormat() ? def : wxDragNone;

 }
 
 }
 

-// ----------------------------------------------------------------------------
-// wxFileDropTarget
-// ----------------------------------------------------------------------------
-
-bool wxFileDropTarget::OnDropFiles( long x, long y, size_t nFiles, const char * const WXUNUSED(aszFiles)[] )
+bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )

 {
 {

-  printf( "Got %d dropped files.\n", (int)nFiles );
-  printf( "At x: %d, y: %d.\n", (int)x, (int)y );
-  return TRUE;
+    if (m_dataObject == NULL)
+        return false;
+
+    return CurrentDragHasSupportedFormat() ;

 }
 
 }
 

-bool wxFileDropTarget::OnDrop(long x, long y, const void *WXUNUSED(pData) )
+wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
+                                   wxDragResult def )

 {
 {

-  char *str = "/this/is/a/path.txt";
+    if (m_dataObject == NULL)
+        return wxDragNone;

 
 

-  return OnDropFiles(x, y, 1, &str ); 
+    if (!CurrentDragHasSupportedFormat())
+        return wxDragNone;
+
+    return GetData() ? def : wxDragNone;

 }
 
 }
 

-size_t wxFileDropTarget::GetFormatCount() const
+bool wxDropTarget::CurrentDragHasSupportedFormat()

 {
 {

-  return 1;
+    bool supported = false ;
+
+    if ( gTrackingGlobals.m_currentSource != NULL )
+    {
+        wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject() ;
+
+        if ( data )
+        {
+            size_t formatcount = data->GetFormatCount() ;
+            wxDataFormat *array = new wxDataFormat[formatcount];
+            data->GetAllFormats( array );
+            for (size_t i = 0; !supported && i < formatcount ; i++)
+            {
+                wxDataFormat format = array[i] ;
+                if ( m_dataObject->IsSupported( format ) )
+                {
+                    supported = true ;
+                    break ;
+                }
+            }
+
+            delete [] array ;
+        }
+    }
+
+    if ( !supported )
+    {
+        UInt16 items ;
+        OSErr result;
+        ItemReference theItem;
+        FlavorType theType ;
+        UInt16 flavors = 0 ;
+
+        CountDragItems( (DragReference)m_currentDrag, &items );
+        for (UInt16 index = 1; index <= items && !supported; ++index)
+        {
+            flavors = 0 ;
+            GetDragItemReferenceNumber( (DragReference)m_currentDrag, index, &theItem );
+            CountDragItemFlavors( (DragReference)m_currentDrag, theItem, &flavors );
+
+            for ( UInt16 flavor = 1 ; flavor <= flavors ; ++flavor )
+            {
+                result = GetFlavorType( (DragReference)m_currentDrag, theItem, flavor, &theType );
+                if ( m_dataObject->IsSupportedFormat( wxDataFormat( theType ) ) )
+                {
+                    supported = true ;
+                    break ;
+                }
+            }
+        }
+    }
+
+    return supported ;

 }
 
 }
 

-wxDataFormat wxFileDropTarget::GetFormat(size_t WXUNUSED(n)) const
+bool wxDropTarget::GetData()

 {
 {

-  return wxDF_FILENAME;
+    if (m_dataObject == NULL)
+        return false;
+
+    if ( !CurrentDragHasSupportedFormat() )
+        return false ;
+
+    bool transferred = false ;
+    if ( gTrackingGlobals.m_currentSource != NULL )
+    {
+        wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject() ;
+
+        if ( data )
+        {
+            size_t formatcount = data->GetFormatCount() ;
+            wxDataFormat *array = new wxDataFormat[formatcount];
+            data->GetAllFormats( array );
+            for (size_t i = 0; !transferred && i < formatcount ; i++)
+            {
+                wxDataFormat format = array[i] ;
+                if ( m_dataObject->IsSupported( format ) )
+                {
+                    int size = data->GetDataSize( format );
+                    transferred = true ;
+
+                    if (size == 0)
+                    {
+                        m_dataObject->SetData( format , 0 , 0 );
+                    }
+                    else
+                    {
+                        char *d = new char[size];
+                        data->GetDataHere( format , (void*) d );
+                        m_dataObject->SetData( format , size , d ) ;
+                        delete [] d ;
+                    }
+                }
+            }
+
+            delete [] array ;
+        }
+    }
+
+    if ( !transferred )
+    {
+        UInt16 items ;
+        OSErr result;
+        ItemReference theItem;
+        FlavorType theType ;
+        FlavorFlags theFlags;
+        UInt16 flavors ;
+        bool firstFileAdded = false ;
+
+        CountDragItems( (DragReference)m_currentDrag, &items );
+        for (UInt16 index = 1; index <= items; ++index)
+        {
+            flavors = 0 ;
+            GetDragItemReferenceNumber( (DragReference)m_currentDrag, index, &theItem );
+            CountDragItemFlavors( (DragReference)m_currentDrag, theItem , &flavors );
+            wxDataFormat preferredFormat = m_dataObject->GetPreferredFormat( wxDataObject::Set );
+            bool hasPreferredFormat = false ;
+
+            for ( UInt16 flavor = 1 ; flavor <= flavors ; ++flavor )
+            {
+                result = GetFlavorType( (DragReference)m_currentDrag, theItem, flavor, &theType );
+                wxDataFormat format( theType );
+                if ( preferredFormat == format )
+                {
+                    hasPreferredFormat = true ;
+                    break ;
+                }
+            }
+
+            for ( UInt16 flavor = 1 ; flavor <= flavors ; ++flavor )
+            {
+                result = GetFlavorType( (DragReference)m_currentDrag, theItem, flavor, &theType );
+                wxDataFormat format( theType ) ;
+                if ( (hasPreferredFormat && format == preferredFormat)
+                    || (!hasPreferredFormat && m_dataObject->IsSupportedFormat( format )))
+                {
+                    result = GetFlavorFlags( (DragReference)m_currentDrag, theItem, theType, &theFlags );
+                    if (result == noErr)
+                    {
+                        Size dataSize ;
+                        Ptr theData ;
+
+                        GetFlavorDataSize( (DragReference)m_currentDrag, theItem, theType, &dataSize );
+                        if ( theType == kScrapFlavorTypeText )
+                        {
+                            // this increment is only valid for allocating:
+                            // on the next GetFlavorData call it is reset again to the original value
+                            dataSize++ ;
+                        }
+                        else if ( theType == kScrapFlavorTypeUnicode )
+                        {
+                            // this increment is only valid for allocating:
+                            // on the next GetFlavorData call it is reset again to the original value
+                            dataSize++ ;
+                            dataSize++ ;
+                        }
+
+                        theData = new char[dataSize];
+
+                        GetFlavorData( (DragReference)m_currentDrag, theItem, theType, (void*) theData, &dataSize, 0L );
+                        if ( theType == kScrapFlavorTypeText )
+                        {
+                            theData[dataSize] = 0 ;
+                            m_dataObject->SetData( wxDataFormat(wxDF_TEXT), dataSize , theData );
+                        }
+#if wxUSE_UNICODE
+                        else if ( theType == kScrapFlavorTypeUnicode )
+                        {
+                            theData[dataSize + 0] =
+                            theData[dataSize + 1] = 0 ;
+                            m_dataObject->SetData( wxDataFormat(wxDF_UNICODETEXT), dataSize , theData );
+                        }
+#endif
+                        else if ( theType == kDragFlavorTypeHFS )
+                        {
+                            wxFileDataObject *fdo = dynamic_cast<wxFileDataObject*>(m_dataObject);
+                            wxASSERT( fdo != NULL );
+
+                            if ((theData != NULL) && (fdo != NULL))
+                            {
+                                HFSFlavor* theFile = (HFSFlavor*) theData ;
+                                wxString name = wxMacFSSpec2MacFilename( &theFile->fileSpec ) ;
+
+                                if ( !firstFileAdded )
+                                {
+                                    // reset file list
+                                    fdo->SetData( 0 , "" ) ;
+                                    firstFileAdded = true ;
+                                }
+
+                                if (!name.IsEmpty())
+                                    fdo->AddFile( name ) ;
+                            }
+                        }
+                        else
+                        {
+                            m_dataObject->SetData( format, dataSize, theData );
+                        }
+
+                        delete [] theData;
+                    }
+                    break ;
+                }
+            }
+        }
+    }
+
+    return true ;

 }
 
 //-------------------------------------------------------------------------
 }
 
 //-------------------------------------------------------------------------


@@ -96,38 +297,409 @@ wxDataFormat wxFileDropTarget::GetFormat(size_t WXUNUSED(n)) const
 //-----------------------------------------------------------------------------
 // drag request
 
 //-----------------------------------------------------------------------------
 // drag request
 

-wxDropSource::wxDropSource( wxWindow *win )
+wxDropSource::wxDropSource(wxWindow *win,
+                           const wxCursor &cursorCopy,
+                           const wxCursor &cursorMove,
+                           const wxCursor &cursorStop)
+            : wxDropSourceBase(cursorCopy, cursorMove, cursorStop)
+{
+    wxMacEnsureTrackingHandlersInstalled() ;
+
+    m_window = win;
+}
+
+wxDropSource::wxDropSource(wxDataObject& data,
+                           wxWindow *win,
+                           const wxCursor &cursorCopy,
+                           const wxCursor &cursorMove,
+                           const wxCursor &cursorStop)
+            : wxDropSourceBase(cursorCopy, cursorMove, cursorStop)
+{
+    wxMacEnsureTrackingHandlersInstalled() ;
+
+    SetData( data );
+    m_window = win;
+}
+
+wxDropSource::~wxDropSource()

 {
 {

-    // TODO
-  //    m_window = win;
-    m_data = NULL;
+}
+
+wxDragResult wxDropSource::DoDragDrop(int flags)
+{
+    wxASSERT_MSG( m_data, wxT("Drop source: no data") );
+
+    if (!m_data)
+        return (wxDragResult) wxDragNone;
+    if (m_data->GetFormatCount() == 0)
+        return (wxDragResult) wxDragNone;
+
+    OSErr result;
+    DragReference theDrag;
+    RgnHandle dragRegion;
+    if ((result = NewDrag(&theDrag)) != noErr)
+        return wxDragNone ;

 
 

-    //    m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
-    //    m_goaheadCursor = wxCursor( wxCURSOR_HAND );
-};
+    // add data to drag
+    size_t formatCount = m_data->GetFormatCount() ;
+    wxDataFormat *formats = new wxDataFormat[formatCount] ;
+    m_data->GetAllFormats( formats ) ;
+    ItemReference theItem = 1 ;

 
 

-wxDropSource::wxDropSource( wxDataObject &data, wxWindow *win )
+    for ( size_t i = 0 ; i < formatCount ; ++i )
+    {
+        size_t dataSize = m_data->GetDataSize( formats[i] ) ;
+        Ptr dataPtr = new char[dataSize] ;
+        m_data->GetDataHere( formats[i] , dataPtr ) ;
+        OSType type = formats[i].GetFormatId() ;
+        if ( type == 'TEXT' || type == 'utxt' )
+        {
+            if ( dataSize > 0 )
+                dataSize-- ;
+            dataPtr[ dataSize ] = 0 ;
+            if ( type == 'utxt' )
+            {
+                if ( dataSize > 0 )
+                    dataSize-- ;
+                dataPtr[ dataSize ] = 0 ;
+            }
+
+            AddDragItemFlavor( theDrag, theItem, type , dataPtr, dataSize, 0 );
+        }
+        else if (type == kDragFlavorTypeHFS )
+        {
+            HFSFlavor  theFlavor ;
+            OSErr err = noErr;
+            CInfoPBRec cat;
+
+            wxMacFilename2FSSpec( wxString( dataPtr, *wxConvCurrent ), &theFlavor.fileSpec ) ;
+
+            memset( &cat, 0, sizeof(cat) );
+            cat.hFileInfo.ioNamePtr = theFlavor.fileSpec.name;
+            cat.hFileInfo.ioVRefNum = theFlavor.fileSpec.vRefNum;
+            cat.hFileInfo.ioDirID = theFlavor.fileSpec.parID;
+            cat.hFileInfo.ioFDirIndex = 0;
+            err = PBGetCatInfoSync( &cat );
+            if (err == noErr)
+            {
+                theFlavor.fdFlags = cat.hFileInfo.ioFlFndrInfo.fdFlags;
+                if (theFlavor.fileSpec.parID == fsRtParID)
+                {
+                    theFlavor.fileCreator = 'MACS';
+                    theFlavor.fileType = 'disk';
+                }
+                else if ((cat.hFileInfo.ioFlAttrib & ioDirMask) != 0)
+                {
+                    theFlavor.fileCreator = 'MACS';
+                    theFlavor.fileType = 'fold';
+                }
+                else
+                {
+                    theFlavor.fileCreator = cat.hFileInfo.ioFlFndrInfo.fdCreator;
+                    theFlavor.fileType = cat.hFileInfo.ioFlFndrInfo.fdType;
+                }
+
+                AddDragItemFlavor( theDrag, theItem, type , &theFlavor, sizeof(theFlavor), 0 );
+            }
+        }
+        else
+        {
+            AddDragItemFlavor( theDrag, theItem, type , dataPtr, dataSize, 0 );
+        }
+
+        delete [] dataPtr ;
+    }
+
+    delete [] formats ;
+
+    dragRegion = NewRgn();
+    RgnHandle tempRgn = NewRgn() ;
+
+    EventRecord* ev = NULL ;
+
+#if !TARGET_CARBON // TODO
+    ev = (EventRecord*) wxTheApp->MacGetCurrentEvent() ;
+#else
+    {
+        EventRecord rec ;
+        ev = &rec ;
+        wxMacConvertEventToRecord( (EventRef) wxTheApp->MacGetCurrentEvent() , &rec ) ;
+    }
+#endif
+
+    const short dragRegionOuterBoundary = 10 ;
+    const short dragRegionInnerBoundary = 9 ;
+
+    SetRectRgn(
+        dragRegion , ev->where.h - dragRegionOuterBoundary ,
+        ev->where.v  - dragRegionOuterBoundary ,
+        ev->where.h + dragRegionOuterBoundary ,
+        ev->where.v + dragRegionOuterBoundary ) ;
+
+    SetRectRgn(
+        tempRgn , ev->where.h - dragRegionInnerBoundary ,
+        ev->where.v  - dragRegionInnerBoundary ,
+        ev->where.h + dragRegionInnerBoundary ,
+        ev->where.v + dragRegionInnerBoundary ) ;
+
+    DiffRgn( dragRegion , tempRgn , dragRegion ) ;
+    DisposeRgn( tempRgn ) ;
+
+    // TODO: work with promises in order to return data
+    // only when drag was successfully completed
+
+    gTrackingGlobals.m_currentSource = this;
+    result = TrackDrag( theDrag, ev, dragRegion );
+    DisposeRgn( dragRegion );
+    DisposeDrag( theDrag );
+    gTrackingGlobals.m_currentSource = NULL;
+
+    bool optionDown = GetCurrentKeyModifiers() & optionKey;
+    wxDragResult dndresult = wxDragCopy;
+    if ( flags != wxDrag_CopyOnly )
+        // on mac the option key is always the indication for copy
+        dndresult = optionDown ? wxDragCopy : wxDragMove;
+
+    return dndresult;
+}
+
+bool wxDropSource::MacInstallDefaultCursor(wxDragResult effect)

 {
 {

-    // TODO
-  //    m_window = win;
-    m_data = &data;
+    const wxCursor& cursor = GetCursor(effect);
+    bool result = cursor.Ok();
+
+    if ( result )
+        cursor.MacInstall();
+
+    return result;
+}
+
+bool gTrackingGlobalsInstalled = false ;

 
 

-    //    m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
-    //    m_goaheadCursor = wxCursor( wxCURSOR_HAND );
-};
+// passing the globals via refcon is not needed by the CFM and later architectures anymore
+// but I'll leave it in there, just in case...

 
 

-void wxDropSource::SetData( wxDataObject &data )
+pascal OSErr wxMacWindowDragTrackingHandler(
+    DragTrackingMessage theMessage, WindowPtr theWindow,
+    void *handlerRefCon, DragReference theDrag );
+pascal OSErr wxMacWindowDragReceiveHandler(
+    WindowPtr theWindow, void *handlerRefCon,
+    DragReference theDrag );
+
+void wxMacEnsureTrackingHandlersInstalled()

 {
 {

-    m_data = &data;
-};
+    if ( !gTrackingGlobalsInstalled )
+    {
+        OSErr result;
+
+        result = InstallTrackingHandler( NewDragTrackingHandlerUPP(wxMacWindowDragTrackingHandler), 0L, &gTrackingGlobals );
+        wxASSERT( result == noErr );
+
+        result = InstallReceiveHandler( NewDragReceiveHandlerUPP(wxMacWindowDragReceiveHandler), 0L, &gTrackingGlobals );
+        wxASSERT( result == noErr );
+
+        gTrackingGlobalsInstalled = true;
+    }
+}

 
 

-wxDropSource::~wxDropSource(void)
+pascal OSErr wxMacWindowDragTrackingHandler(
+    DragTrackingMessage theMessage, WindowPtr theWindow,
+    void *handlerRefCon, DragReference theDrag )

 {
 {

-};
-   
-wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) )
+    MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon;
+
+    Point mouse, localMouse;
+    DragAttributes attributes;
+
+    GetDragAttributes( theDrag, &attributes );
+
+    wxTopLevelWindowMac* toplevel = wxFindWinFromMacWindow( theWindow ) ;
+
+    bool optionDown = GetCurrentKeyModifiers() & optionKey ;
+    wxDragResult result = optionDown ? wxDragCopy : wxDragMove;
+
+    switch (theMessage)
+    {
+        case kDragTrackingEnterHandler:
+        case kDragTrackingLeaveHandler:
+            break;
+
+        case kDragTrackingEnterWindow:
+            if (trackingGlobals != NULL)
+            {
+                trackingGlobals->m_currentTargetWindow = NULL ;
+                trackingGlobals->m_currentTarget = NULL ;
+            }
+            break;
+
+        case kDragTrackingInWindow:
+            if (trackingGlobals == NULL)
+                break;
+            if (toplevel == NULL)
+                break;
+
+            GetDragMouse( theDrag, &mouse, 0L );
+            localMouse = mouse;
+            GlobalToLocal( &localMouse );
+
+            {
+                wxWindow *win = NULL ;
+                ControlPartCode controlPart ;
+                ControlRef control = wxMacFindControlUnderMouse(
+                    toplevel , localMouse , theWindow , &controlPart ) ;
+                if ( control )
+                    win = wxFindControlFromMacControl( control ) ;
+                else
+                    win = toplevel ;
+
+                int localx , localy ;
+                localx = localMouse.h ;
+                localy = localMouse.v ;
+
+                if ( win )
+                    win->MacRootWindowToWindow( &localx , &localy ) ;
+                if ( win != trackingGlobals->m_currentTargetWindow )
+                {
+                    if ( trackingGlobals->m_currentTargetWindow )
+                    {
+                        // this window is left
+                        if ( trackingGlobals->m_currentTarget )
+                        {
+                            HideDragHilite( theDrag );
+                            trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag );
+                            trackingGlobals->m_currentTarget->OnLeave();
+                            trackingGlobals->m_currentTarget = NULL;
+                            trackingGlobals->m_currentTargetWindow = NULL;
+                        }
+                    }
+
+                    if ( win )
+                    {
+                        // this window is entered
+                        trackingGlobals->m_currentTargetWindow = win ;
+                        trackingGlobals->m_currentTarget = win->GetDropTarget() ;
+                        {
+                            if ( trackingGlobals->m_currentTarget )
+                            {
+                                trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
+                                result = trackingGlobals->m_currentTarget->OnEnter( localx , localy , result ) ;
+                            }
+
+                            if ( result != wxDragNone )
+                            {
+                                int x , y ;
+
+                                x = y = 0 ;
+                                win->MacWindowToRootWindow( &x , &y ) ;
+                                RgnHandle hiliteRgn = NewRgn() ;
+                                Rect r = { y , x , y + win->GetSize().y , x + win->GetSize().x } ;
+                                RectRgn( hiliteRgn , &r ) ;
+                                ShowDragHilite( theDrag, hiliteRgn, true );
+                                DisposeRgn( hiliteRgn ) ;
+                            }
+                        }
+                    }
+                }
+                else
+                {
+                    if ( trackingGlobals->m_currentTarget )
+                    {
+                        trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
+                        trackingGlobals->m_currentTarget->OnDragOver( localx , localy , result ) ;
+                    }
+                }
+
+                // set cursor for OnEnter and OnDragOver
+                if ( trackingGlobals->m_currentSource && !trackingGlobals->m_currentSource->GiveFeedback( result ) )
+                {
+                  if ( !trackingGlobals->m_currentSource->MacInstallDefaultCursor( result ) )
+                  {
+                      switch ( result )
+                      {
+                          case wxDragCopy :
+                              {
+                                  wxCursor cursor(wxCURSOR_COPY_ARROW) ;
+                                  cursor.MacInstall() ;
+                              }
+                              break ;
+
+                          case wxDragMove :
+                              {
+                                  wxCursor cursor(wxCURSOR_ARROW) ;
+                                  cursor.MacInstall() ;
+                              }
+                              break ;
+
+                          case wxDragNone :
+                              {
+                                  wxCursor cursor(wxCURSOR_NO_ENTRY) ;
+                                  cursor.MacInstall() ;
+                              }
+                              break ;
+
+                          case wxDragError:
+                          case wxDragLink:
+                          case wxDragCancel:
+                          default:
+                              // put these here to make gcc happy
+                              ;
+                      }
+                   }
+                }
+            }
+            break;
+
+        case kDragTrackingLeaveWindow:
+            if (trackingGlobals == NULL)
+                break;
+
+            if (trackingGlobals->m_currentTarget)
+            {
+                trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag );
+                trackingGlobals->m_currentTarget->OnLeave();
+                HideDragHilite( theDrag );
+                trackingGlobals->m_currentTarget = NULL;
+            }
+            trackingGlobals->m_currentTargetWindow = NULL;
+            break;
+
+        default:
+            break;
+    }
+
+    return noErr;
+}
+
+pascal OSErr wxMacWindowDragReceiveHandler(
+    WindowPtr theWindow,
+    void *handlerRefCon,
+    DragReference theDrag)

 {
 {

-    // TODO
-    return wxDragError;
-};
+    MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*)handlerRefCon;
+    if ( trackingGlobals->m_currentTarget )
+    {
+        Point mouse, localMouse ;
+        int localx, localy ;
+
+        trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
+        GetDragMouse(theDrag, &mouse, 0L);
+        localMouse = mouse;
+        GlobalToLocal(&localMouse);
+        localx = localMouse.h ;
+        localy = localMouse.v ;
+
+        // TODO : should we use client coordinates?
+        if ( trackingGlobals->m_currentTargetWindow )
+            trackingGlobals->m_currentTargetWindow->MacRootWindowToWindow( &localx , &localy ) ;
+        if ( trackingGlobals->m_currentTarget->OnDrop( localx , localy ) )
+        {
+            bool optionDown = GetCurrentKeyModifiers() & optionKey ;
+            wxDragResult result = optionDown ? wxDragCopy : wxDragMove;
+            trackingGlobals->m_currentTarget->OnData( localx , localy , result ) ;
+        }
+    }

 
 

+    return noErr;
+}
+
+#endif