src/mac/dnd.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        dnd.cpp
// Purpose:     wxDropTarget, wxDropSource, wxDataObject implementation
// Author:      AUTHOR
// Modified by:
// Created:     ??/??/98
// RCS-ID:      $Id$
// Copyright:   (c) 1998 AUTHOR
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "dnd.h"
#endif

#include "wx/defs.h"

#if wxUSE_DRAG_AND_DROP

#include "wx/dnd.h"
#include "wx/window.h"
#include "wx/toplevel.h"
#include "wx/app.h"
#include "wx/gdicmn.h"
#include "wx/mac/private.h"

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

void wxMacEnsureTrackingHandlersInstalled() ;

typedef struct
{
    wxWindow* m_currentTargetWindow ;
    wxDropTarget* m_currentTarget ;
    wxDropSource* m_currentSource ;
} MacTrackingGlobals ;

MacTrackingGlobals gTrackingGlobals ;

//----------------------------------------------------------------------------
// wxDropTarget
//----------------------------------------------------------------------------

wxDropTarget::wxDropTarget( wxDataObject *data )
            : wxDropTargetBase( data )
{
    wxMacEnsureTrackingHandlersInstalled() ;
}

wxDragResult wxDropTarget::OnDragOver( wxCoord WXUNUSED(x),
                                       wxCoord WXUNUSED(y),
                                       wxDragResult def )
{

    return CurrentDragHasSupportedFormat() ? def : wxDragNone;
}

bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
{
    if (!m_dataObject)
        return FALSE;

    return CurrentDragHasSupportedFormat() ;
}

wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
                                   wxDragResult def )
{
    if (!m_dataObject)
        return wxDragNone;

    if (!CurrentDragHasSupportedFormat())
        return wxDragNone;

    return GetData() ? def : wxDragNone;
}

bool wxDropTarget::CurrentDragHasSupportedFormat()
{
    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;
      CountDragItems((DragReference)m_currentDrag, &items);
      for (UInt16 index = 1; index <= items && supported == false ; ++index)
      {
          ItemReference theItem;
          FlavorType theType ;
          UInt16 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 ;
}

bool wxDropTarget::GetData()
{
    if (!m_dataObject)
        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;
      CountDragItems((DragReference)m_currentDrag, &items);
      for (UInt16 index = 1; index <= items; ++index)
      {
          ItemReference theItem;
          FlavorType theType ;
          UInt16 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);
            wxDataFormat format(theType) ;
            if ( m_dataObject->IsSupportedFormat( format ) )
            {
              FlavorFlags theFlags;
              result = GetFlavorFlags((DragReference)m_currentDrag, theItem, theType, &theFlags);
              if (result == noErr)
              {
                  Size dataSize ;
                  Ptr theData ;
                  GetFlavorDataSize((DragReference)m_currentDrag, theItem, theType, &dataSize);
          			  if ( theType == 'TEXT' )
          			    dataSize++ ;
                  theData = new char[dataSize];
                  GetFlavorData((DragReference)m_currentDrag, theItem, theType, (void*) theData, &dataSize, 0L);
                  if( theType == 'TEXT' )
                  {
                    theData[dataSize]=0 ;
                    if ( wxApp::s_macDefaultEncodingIsPC )
                    {
                      wxMacConvertToPC((char*)theData) ;
                    }
                    m_dataObject->SetData( format, dataSize, theData );
                  }
                  else if ( theType == kDragFlavorTypeHFS )
                  {
                    HFSFlavor* theFile = (HFSFlavor*) theData ;
                    wxString name = wxMacFSSpec2MacFilename( &theFile->fileSpec ) ;
                    m_dataObject->SetData( format , name.Length() + 1, name ) ;
                  }
                  else
                  {
                    m_dataObject->SetData( format, dataSize, theData );
                  }
                  delete[] theData;
              }
              break ;
            }
          }
      }
    }
    return TRUE ;
}

//-------------------------------------------------------------------------
// wxDropSource
//-------------------------------------------------------------------------

//-----------------------------------------------------------------------------
// drag request

wxDropSource::wxDropSource(wxWindow *win,
                           const wxIcon &iconCopy,
                           const wxIcon &iconMove,
                           const wxIcon &iconNone)
{
    wxMacEnsureTrackingHandlersInstalled() ;
    m_window = win;
}

wxDropSource::wxDropSource(wxDataObject& data,
                           wxWindow *win,
                           const wxIcon &iconCopy,
                           const wxIcon &iconMove,
                           const wxIcon &iconNone)
{
    wxMacEnsureTrackingHandlersInstalled() ;
    SetData( data );
    m_window = win;
}

wxDropSource::~wxDropSource()
{
}


wxDragResult wxDropSource::DoDragDrop( bool allowMove )
{
    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)))
    {
        return wxDragNone ;
    }
    // add data to drag
    size_t formatCount = m_data->GetFormatCount() ;
    wxDataFormat *formats = new wxDataFormat[formatCount] ;
    m_data->GetAllFormats( formats ) ;
    ItemReference theItem = 1 ;
    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' )
        {
          dataSize-- ;
          if ( wxApp::s_macDefaultEncodingIsPC )
          {
            wxMacConvertFromPC((char*)dataPtr) ;
          }
          AddDragItemFlavor(theDrag, theItem, type , dataPtr, dataSize, 0);
        }
        else if (type == kDragFlavorTypeHFS )
        {
          HFSFlavor  theFlavor ;
        	OSErr err = noErr;
         	CInfoPBRec cat;

          wxMacFilename2FSSpec( dataPtr , &theFlavor.fileSpec ) ;

        	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 = (EventRecord*) wxTheApp->MacGetCurrentEvent() ;
    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 ;

    return wxDragCopy ;
}

bool gTrackingGlobalsInstalled = false ;

// 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...

pascal OSErr wxMacWindowDragTrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow,
  void *handlerRefCon, DragReference theDrag) ;
pascal OSErr wxMacWindowDragReceiveHandler(WindowPtr theWindow, void *handlerRefCon,
DragReference theDrag) ;

void wxMacEnsureTrackingHandlersInstalled()
{
    if( !gTrackingGlobalsInstalled )
    {
        OSErr result;

        result = InstallTrackingHandler(NewDragTrackingHandlerUPP(wxMacWindowDragTrackingHandler), 0L,&gTrackingGlobals);
        wxASSERT( result == noErr ) ;
        result = InstallReceiveHandler(NewDragReceiveHandlerUPP(wxMacWindowDragReceiveHandler), 0L, &gTrackingGlobals);
        wxASSERT( result == noErr ) ;

        gTrackingGlobalsInstalled = true ;
    }
}

pascal OSErr wxMacWindowDragTrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow,
  void *handlerRefCon, DragReference theDrag)
{
    MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon;
    Point mouse, localMouse;
    DragAttributes attributes;
    GetDragAttributes(theDrag, &attributes);
    wxTopLevelWindowMac* toplevel = wxFindWinFromMacWindow( theWindow ) ;
    switch(theMessage)
    {
        case kDragTrackingEnterHandler:
            break;
        case kDragTrackingLeaveHandler:
            break;
        case kDragTrackingEnterWindow:
           trackingGlobals->m_currentTargetWindow = NULL ;
            trackingGlobals->m_currentTarget = NULL ;
            break;
        case kDragTrackingInWindow:
            if (toplevel == NULL)
                break;

            GetDragMouse(theDrag, &mouse, 0L);
            localMouse = mouse;
            GlobalToLocal(&localMouse);

//            if (attributes & kDragHasLeftSenderWindow)
            {
                wxPoint point(localMouse.h , localMouse.v) ;
                wxWindow *win = NULL ;
                toplevel->MacGetWindowFromPointSub( point , &win ) ;
                int localx , localy ;
                localx = localMouse.h ;
                localy = localMouse.v ;
                //TODO : should we use client coordinates
                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 ) ;
                           if ( trackingGlobals->m_currentTarget->OnEnter(
                                localx , localy , wxDragCopy ) != wxDragNone )
                            {
                              int x , y ;
                              x = y = 0 ;
                              win->MacWindowToRootWindow( &x , &y ) ;
                              RgnHandle hiliteRgn = NewRgn() ;
                              SetRectRgn( hiliteRgn , x , y , x+win->GetSize().x ,y+win->GetSize().y) ;
                              ShowDragHilite(theDrag, hiliteRgn, true);
                              DisposeRgn( hiliteRgn ) ;
                            }
                        }
                    }
                }
                else
                {
                    if( trackingGlobals->m_currentTarget )
                    {
                        trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
                        trackingGlobals->m_currentTarget->OnDragOver(
                            localx , localy , wxDragCopy ) ;
                    }
                }

          }
            // MyTrackItemUnderMouse(localMouse, theWindow);
            break;
        case kDragTrackingLeaveWindow:
            if (trackingGlobals->m_currentTarget)
            {
                trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
                trackingGlobals->m_currentTarget->OnLeave() ;
                HideDragHilite(theDrag);
                trackingGlobals->m_currentTarget = NULL ;
            }
            trackingGlobals->m_currentTargetWindow = NULL ;
            break;
    }
    return(noErr);
}

pascal OSErr wxMacWindowDragReceiveHandler(WindowPtr theWindow, void *handlerRefCon,
DragReference theDrag)
{
    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 ) )
        {
            trackingGlobals->m_currentTarget->OnData( localx , localy , wxDragCopy ) ;
        }
    }
    return(noErr);
}
#endif
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: dnd.cpp
	3	// Purpose: wxDropTarget, wxDropSource, wxDataObject implementation
	4	// Author: AUTHOR
	5	// Modified by:
	6	// Created: ??/??/98
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 1998 AUTHOR
	9	// Licence: wxWindows licence
	10	///////////////////////////////////////////////////////////////////////////////
	11
	12	#ifdef __GNUG__
	13	#pragma implementation "dnd.h"
	14	#endif
	15
	16	#include "wx/defs.h"
	17
	18	#if wxUSE_DRAG_AND_DROP
	19
	20	#include "wx/dnd.h"
	21	#include "wx/window.h"
	22	#include "wx/toplevel.h"
	23	#include "wx/app.h"
	24	#include "wx/gdicmn.h"
	25	#include "wx/mac/private.h"
	26
	27	// ----------------------------------------------------------------------------
	28	// global
	29	// ----------------------------------------------------------------------------
	30
	31	void wxMacEnsureTrackingHandlersInstalled() ;
	32
	33	typedef struct
	34	{
	35	wxWindow* m_currentTargetWindow ;
	36	wxDropTarget* m_currentTarget ;
	37	wxDropSource* m_currentSource ;
	38	} MacTrackingGlobals ;
	39
	40	MacTrackingGlobals gTrackingGlobals ;
	41
	42	//----------------------------------------------------------------------------
	43	// wxDropTarget
	44	//----------------------------------------------------------------------------
	45
	46	wxDropTarget::wxDropTarget( wxDataObject *data )
	47	: wxDropTargetBase( data )
	48	{
	49	wxMacEnsureTrackingHandlersInstalled() ;
	50	}
	51
	52	wxDragResult wxDropTarget::OnDragOver( wxCoord WXUNUSED(x),
	53	wxCoord WXUNUSED(y),
	54	wxDragResult def )
	55	{
	56
	57	return CurrentDragHasSupportedFormat() ? def : wxDragNone;
	58	}
	59
	60	bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
	61	{
	62	if (!m_dataObject)
	63	return FALSE;
	64
	65	return CurrentDragHasSupportedFormat() ;
	66	}
	67
	68	wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
	69	wxDragResult def )
	70	{
	71	if (!m_dataObject)
	72	return wxDragNone;
	73
	74	if (!CurrentDragHasSupportedFormat())
	75	return wxDragNone;
	76
	77	return GetData() ? def : wxDragNone;
	78	}
	79
	80	bool wxDropTarget::CurrentDragHasSupportedFormat()
	81	{
	82	bool supported = false ;
	83	if ( gTrackingGlobals.m_currentSource != NULL )
	84	{
	85	wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject() ;
	86
	87	if ( data )
	88	{
	89	size_t formatcount = data->GetFormatCount() ;
	90	wxDataFormat *array = new wxDataFormat[ formatcount ];
	91	data->GetAllFormats( array );
	92	for (size_t i = 0; !supported && i < formatcount ; i++)
	93	{
	94	wxDataFormat format = array[i] ;
	95	if ( m_dataObject->IsSupported( format ) )
	96	{
	97	supported = true ;
	98	break ;
	99	}
	100	}
	101	delete[] array ;
	102	}
	103	}
	104	if ( !supported )
	105	{
	106	UInt16 items ;
	107	OSErr result;
	108	CountDragItems((DragReference)m_currentDrag, &items);
	109	for (UInt16 index = 1; index <= items && supported == false ; ++index)
	110	{
	111	ItemReference theItem;
	112	FlavorType theType ;
	113	UInt16 flavors = 0 ;
	114	GetDragItemReferenceNumber((DragReference)m_currentDrag, index, &theItem);
	115	CountDragItemFlavors( (DragReference)m_currentDrag, theItem , &flavors ) ;
	116	for ( UInt16 flavor = 1 ; flavor <= flavors ; ++flavor )
	117	{
	118	result = GetFlavorType((DragReference)m_currentDrag, theItem, flavor , &theType);
	119	if ( m_dataObject->IsSupportedFormat( wxDataFormat( theType ) ) )
	120	{
	121	supported = true ;
	122	break ;
	123	}
	124	}
	125	}
	126	}
	127	return supported ;
	128	}
	129
	130	bool wxDropTarget::GetData()
	131	{
	132	if (!m_dataObject)
	133	return FALSE;
	134
	135	if ( !CurrentDragHasSupportedFormat() )
	136	return FALSE ;
	137
	138	bool transferred = false ;
	139	if ( gTrackingGlobals.m_currentSource != NULL )
	140	{
	141	wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject() ;
	142
	143	if ( data )
	144	{
	145	size_t formatcount = data->GetFormatCount() ;
	146	wxDataFormat *array = new wxDataFormat[ formatcount ];
	147	data->GetAllFormats( array );
	148	for (size_t i = 0; !transferred && i < formatcount ; i++)
	149	{
	150	wxDataFormat format = array[i] ;
	151	if ( m_dataObject->IsSupported( format ) )
	152	{
	153	int size = data->GetDataSize( format );
	154	transferred = true ;
	155
	156	if (size == 0)
	157	{
	158	m_dataObject->SetData(format , 0 , 0 ) ;
	159	}
	160	else
	161	{
	162	char *d = new char[size];
	163	data->GetDataHere( format , (void*) d );
	164	m_dataObject->SetData( format , size , d ) ;
	165	delete[] d ;
	166	}
	167	}
	168	}
	169	delete[] array ;
	170	}
	171	}
	172	if ( !transferred )
	173	{
	174	UInt16 items ;
	175	OSErr result;
	176	CountDragItems((DragReference)m_currentDrag, &items);
	177	for (UInt16 index = 1; index <= items; ++index)
	178	{
	179	ItemReference theItem;
	180	FlavorType theType ;
	181	UInt16 flavors = 0 ;
	182	GetDragItemReferenceNumber((DragReference)m_currentDrag, index, &theItem);
	183	CountDragItemFlavors( (DragReference)m_currentDrag, theItem , &flavors ) ;
	184	for ( UInt16 flavor = 1 ; flavor <= flavors ; ++flavor )
	185	{
	186	result = GetFlavorType((DragReference)m_currentDrag, theItem, flavor , &theType);
	187	wxDataFormat format(theType) ;
	188	if ( m_dataObject->IsSupportedFormat( format ) )
	189	{
	190	FlavorFlags theFlags;
	191	result = GetFlavorFlags((DragReference)m_currentDrag, theItem, theType, &theFlags);
	192	if (result == noErr)
	193	{
	194	Size dataSize ;
	195	Ptr theData ;
	196	GetFlavorDataSize((DragReference)m_currentDrag, theItem, theType, &dataSize);
	197	if ( theType == 'TEXT' )
	198	dataSize++ ;
	199	theData = new char[dataSize];
	200	GetFlavorData((DragReference)m_currentDrag, theItem, theType, (void*) theData, &dataSize, 0L);
	201	if( theType == 'TEXT' )
	202	{
	203	theData[dataSize]=0 ;
	204	if ( wxApp::s_macDefaultEncodingIsPC )
	205	{
	206	wxMacConvertToPC((char*)theData) ;
	207	}
	208	m_dataObject->SetData( format, dataSize, theData );
	209	}
	210	else if ( theType == kDragFlavorTypeHFS )
	211	{
	212	HFSFlavor* theFile = (HFSFlavor*) theData ;
	213	wxString name = wxMacFSSpec2MacFilename( &theFile->fileSpec ) ;
	214	m_dataObject->SetData( format , name.Length() + 1, name ) ;
	215	}
	216	else
	217	{
	218	m_dataObject->SetData( format, dataSize, theData );
	219	}
	220	delete[] theData;
	221	}
	222	break ;
	223	}
	224	}
	225	}
	226	}
	227	return TRUE ;
	228	}
	229
	230	//-------------------------------------------------------------------------
	231	// wxDropSource
	232	//-------------------------------------------------------------------------
	233
	234	//-----------------------------------------------------------------------------
	235	// drag request
	236
	237	wxDropSource::wxDropSource(wxWindow *win,
	238	const wxIcon &iconCopy,
	239	const wxIcon &iconMove,
	240	const wxIcon &iconNone)
	241	{
	242	wxMacEnsureTrackingHandlersInstalled() ;
	243	m_window = win;
	244	}
	245
	246	wxDropSource::wxDropSource(wxDataObject& data,
	247	wxWindow *win,
	248	const wxIcon &iconCopy,
	249	const wxIcon &iconMove,
	250	const wxIcon &iconNone)
	251	{
	252	wxMacEnsureTrackingHandlersInstalled() ;
	253	SetData( data );
	254	m_window = win;
	255	}
	256
	257	wxDropSource::~wxDropSource()
	258	{
	259	}
	260
	261
	262	wxDragResult wxDropSource::DoDragDrop( bool allowMove )
	263	{
	264	wxASSERT_MSG( m_data, wxT("Drop source: no data") );
	265
	266	if (!m_data)
	267	return (wxDragResult) wxDragNone;
	268
	269	if (m_data->GetFormatCount() == 0)
	270	return (wxDragResult) wxDragNone;
	271
	272	OSErr result;
	273	DragReference theDrag;
	274	RgnHandle dragRegion;
	275	if ((result = NewDrag(&theDrag)))
	276	{
	277	return wxDragNone ;
	278	}
	279	// add data to drag
	280	size_t formatCount = m_data->GetFormatCount() ;
	281	wxDataFormat *formats = new wxDataFormat[formatCount] ;
	282	m_data->GetAllFormats( formats ) ;
	283	ItemReference theItem = 1 ;
	284	for ( size_t i = 0 ; i < formatCount ; ++i )
	285	{
	286	size_t dataSize = m_data->GetDataSize( formats[i] ) ;
	287	Ptr dataPtr = new char[dataSize] ;
	288	m_data->GetDataHere( formats[i] , dataPtr ) ;
	289	OSType type = formats[i].GetFormatId() ;
	290	if ( type == 'TEXT' )
	291	{
	292	dataSize-- ;
	293	if ( wxApp::s_macDefaultEncodingIsPC )
	294	{
	295	wxMacConvertFromPC((char*)dataPtr) ;
	296	}
	297	AddDragItemFlavor(theDrag, theItem, type , dataPtr, dataSize, 0);
	298	}
	299	else if (type == kDragFlavorTypeHFS )
	300	{
	301	HFSFlavor theFlavor ;
	302	OSErr err = noErr;
	303	CInfoPBRec cat;
	304
	305	wxMacFilename2FSSpec( dataPtr , &theFlavor.fileSpec ) ;
	306
	307	cat.hFileInfo.ioNamePtr = theFlavor.fileSpec.name;
	308	cat.hFileInfo.ioVRefNum = theFlavor.fileSpec.vRefNum;
	309	cat.hFileInfo.ioDirID = theFlavor.fileSpec.parID;
	310	cat.hFileInfo.ioFDirIndex = 0;
	311	err = PBGetCatInfoSync(&cat);
	312	if (err == noErr )
	313	{
	314	theFlavor.fdFlags = cat.hFileInfo.ioFlFndrInfo.fdFlags;
	315	if (theFlavor.fileSpec.parID == fsRtParID) {
	316	theFlavor.fileCreator = 'MACS';
	317	theFlavor.fileType = 'disk';
	318	} else if ((cat.hFileInfo.ioFlAttrib & ioDirMask) != 0) {
	319	theFlavor.fileCreator = 'MACS';
	320	theFlavor.fileType = 'fold';
	321	} else {
	322	theFlavor.fileCreator = cat.hFileInfo.ioFlFndrInfo.fdCreator;
	323	theFlavor.fileType = cat.hFileInfo.ioFlFndrInfo.fdType;
	324	}
	325	AddDragItemFlavor(theDrag, theItem, type , &theFlavor, sizeof(theFlavor), 0);
	326	}
	327	}
	328	else
	329	{
	330	AddDragItemFlavor(theDrag, theItem, type , dataPtr, dataSize, 0);
	331	}
	332	delete[] dataPtr ;
	333	}
	334	delete[] formats ;
	335
	336	dragRegion = NewRgn();
	337	RgnHandle tempRgn = NewRgn() ;
	338
	339	EventRecord* ev = (EventRecord*) wxTheApp->MacGetCurrentEvent() ;
	340	const short dragRegionOuterBoundary = 10 ;
	341	const short dragRegionInnerBoundary = 9 ;
	342
	343	SetRectRgn( dragRegion , ev->where.h - dragRegionOuterBoundary ,
	344	ev->where.v - dragRegionOuterBoundary ,
	345	ev->where.h + dragRegionOuterBoundary ,
	346	ev->where.v + dragRegionOuterBoundary ) ;
	347
	348	SetRectRgn( tempRgn , ev->where.h - dragRegionInnerBoundary ,
	349	ev->where.v - dragRegionInnerBoundary ,
	350	ev->where.h + dragRegionInnerBoundary ,
	351	ev->where.v + dragRegionInnerBoundary ) ;
	352
	353	DiffRgn( dragRegion , tempRgn , dragRegion ) ;
	354	DisposeRgn( tempRgn ) ;
	355
	356	// TODO:work with promises in order to return data only when drag
	357	// was successfully completed
	358
	359	gTrackingGlobals.m_currentSource = this ;
	360	result = TrackDrag(theDrag, ev , dragRegion);
	361	DisposeRgn(dragRegion);
	362	DisposeDrag(theDrag);
	363	gTrackingGlobals.m_currentSource = NULL ;
	364
	365	return wxDragCopy ;
	366	}
	367
	368	bool gTrackingGlobalsInstalled = false ;
	369
	370	// passing the globals via refcon is not needed by the CFM and later architectures anymore
	371	// but I'll leave it in there, just in case...
	372
	373	pascal OSErr wxMacWindowDragTrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow,
	374	void *handlerRefCon, DragReference theDrag) ;
	375	pascal OSErr wxMacWindowDragReceiveHandler(WindowPtr theWindow, void *handlerRefCon,
	376	DragReference theDrag) ;
	377
	378	void wxMacEnsureTrackingHandlersInstalled()
	379	{
	380	if( !gTrackingGlobalsInstalled )
	381	{
	382	OSErr result;
	383
	384	result = InstallTrackingHandler(NewDragTrackingHandlerUPP(wxMacWindowDragTrackingHandler), 0L,&gTrackingGlobals);
	385	wxASSERT( result == noErr ) ;
	386	result = InstallReceiveHandler(NewDragReceiveHandlerUPP(wxMacWindowDragReceiveHandler), 0L, &gTrackingGlobals);
	387	wxASSERT( result == noErr ) ;
	388
	389	gTrackingGlobalsInstalled = true ;
	390	}
	391	}
	392
	393	pascal OSErr wxMacWindowDragTrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow,
	394	void *handlerRefCon, DragReference theDrag)
	395	{
	396	MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon;
	397	Point mouse, localMouse;
	398	DragAttributes attributes;
	399	GetDragAttributes(theDrag, &attributes);
	400	wxTopLevelWindowMac* toplevel = wxFindWinFromMacWindow( theWindow ) ;
	401	switch(theMessage)
	402	{
	403	case kDragTrackingEnterHandler:
	404	break;
	405	case kDragTrackingLeaveHandler:
	406	break;
	407	case kDragTrackingEnterWindow:
	408	trackingGlobals->m_currentTargetWindow = NULL ;
	409	trackingGlobals->m_currentTarget = NULL ;
	410	break;
	411	case kDragTrackingInWindow:
	412	if (toplevel == NULL)
	413	break;
	414
	415	GetDragMouse(theDrag, &mouse, 0L);
	416	localMouse = mouse;
	417	GlobalToLocal(&localMouse);
	418
	419	// if (attributes & kDragHasLeftSenderWindow)
	420	{
	421	wxPoint point(localMouse.h , localMouse.v) ;
	422	wxWindow *win = NULL ;
	423	toplevel->MacGetWindowFromPointSub( point , &win ) ;
	424	int localx , localy ;
	425	localx = localMouse.h ;
	426	localy = localMouse.v ;
	427	//TODO : should we use client coordinates
	428	if ( win )
	429	win->MacRootWindowToWindow( &localx , &localy ) ;
	430	if ( win != trackingGlobals->m_currentTargetWindow )
	431	{
	432	if ( trackingGlobals->m_currentTargetWindow )
	433	{
	434	// this window is left
	435	if ( trackingGlobals->m_currentTarget )
	436	{
	437	HideDragHilite(theDrag);
	438	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
	439	trackingGlobals->m_currentTarget->OnLeave() ;
	440	trackingGlobals->m_currentTarget = NULL;
	441	trackingGlobals->m_currentTargetWindow = NULL ;
	442	}
	443	}
	444	if ( win )
	445	{
	446	// this window is entered
	447	trackingGlobals->m_currentTargetWindow = win ;
	448	trackingGlobals->m_currentTarget = win->GetDropTarget() ;
	449	if ( trackingGlobals->m_currentTarget )
	450	{
	451	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
	452	if ( trackingGlobals->m_currentTarget->OnEnter(
	453	localx , localy , wxDragCopy ) != wxDragNone )
	454	{
	455	int x , y ;
	456	x = y = 0 ;
	457	win->MacWindowToRootWindow( &x , &y ) ;
	458	RgnHandle hiliteRgn = NewRgn() ;
	459	SetRectRgn( hiliteRgn , x , y , x+win->GetSize().x ,y+win->GetSize().y) ;
	460	ShowDragHilite(theDrag, hiliteRgn, true);
	461	DisposeRgn( hiliteRgn ) ;
	462	}
	463	}
	464	}
	465	}
	466	else
	467	{
	468	if( trackingGlobals->m_currentTarget )
	469	{
	470	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
	471	trackingGlobals->m_currentTarget->OnDragOver(
	472	localx , localy , wxDragCopy ) ;
	473	}
	474	}
	475
	476	}
	477	// MyTrackItemUnderMouse(localMouse, theWindow);
	478	break;
	479	case kDragTrackingLeaveWindow:
	480	if (trackingGlobals->m_currentTarget)
	481	{
	482	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
	483	trackingGlobals->m_currentTarget->OnLeave() ;
	484	HideDragHilite(theDrag);
	485	trackingGlobals->m_currentTarget = NULL ;
	486	}
	487	trackingGlobals->m_currentTargetWindow = NULL ;
	488	break;
	489	}
	490	return(noErr);
	491	}
	492
	493	pascal OSErr wxMacWindowDragReceiveHandler(WindowPtr theWindow, void *handlerRefCon,
	494	DragReference theDrag)
	495	{
	496	MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon;
	497	if ( trackingGlobals->m_currentTarget )
	498	{
	499	Point mouse,localMouse ;
	500	int localx,localy ;
	501
	502	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
	503	GetDragMouse(theDrag, &mouse, 0L);
	504	localMouse = mouse;
	505	GlobalToLocal(&localMouse);
	506	localx = localMouse.h ;
	507	localy = localMouse.v ;
	508	//TODO : should we use client coordinates
	509	if ( trackingGlobals->m_currentTargetWindow )
	510	trackingGlobals->m_currentTargetWindow->MacRootWindowToWindow( &localx , &localy ) ;
	511	if ( trackingGlobals->m_currentTarget->OnDrop( localx , localy ) )
	512	{
	513	trackingGlobals->m_currentTarget->OnData( localx , localy , wxDragCopy ) ;
	514	}
	515	}
	516	return(noErr);
	517	}
	518	#endif