src/mac/carbon/dnd.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        dnd.cpp
// Purpose:     wxDropTarget, wxDropSource, wxDataObject implementation
// Author:      Stefan Csomor
// Modified by:
// Created:     1998-01-01
// RCS-ID:      $Id$
// Copyright:   (c) 1998 Stefan Csomor
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "dnd.h"
#endif

#include "wx/wxprec.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"

#ifndef __DARWIN__
    #include <Scrap.h>
#endif

// ----------------------------------------------------------------------------
// 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;
        bool firstFileAdded = false ;
        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 == 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 )
                        {
                            HFSFlavor* theFile = (HFSFlavor*) theData ;
                            wxString name = wxMacFSSpec2MacFilename( &theFile->fileSpec ) ;
                            if ( !firstFileAdded )
                            {
                                // reset file list
                                ((wxFileDataObject*)m_dataObject)->SetData( 0 , "" ) ;
                                firstFileAdded = true ;
                            }
                            ((wxFileDataObject*)m_dataObject)->AddFile( name ) ;
                        }
                        else
                        {
                            m_dataObject->SetData( format, dataSize, theData );
                        }
                        delete[] theData;
                    }
                    break ;
                }
            }
        }
    }
    return TRUE ;
}

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

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

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()
{
}


wxDragResult wxDropSource::DoDragDrop(int WXUNUSED(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)))
    {
        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-- ;
            dataPtr[ dataSize ] = 0 ;
            wxString st( (wxChar*) dataPtr ) ;
            wxCharBuffer buf = st.mb_str( wxConvLocal) ;
            AddDragItemFlavor(theDrag, theItem, type , buf.data(), strlen(buf), 0);
        }
        else if (type == kDragFlavorTypeHFS )
        {
            HFSFlavor  theFlavor ;
            OSErr err = noErr;
            CInfoPBRec cat;

            wxMacFilename2FSSpec( wxString( dataPtr , *wxConvCurrent ) , &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 = 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 = optionDown ? wxDragCopy : wxDragMove;
    return dndresult;
}

bool wxDropSource::MacInstallDefaultCursor(wxDragResult effect)
{
    const wxCursor& cursor = GetCursor(effect);
    if ( cursor.Ok() )
    {
        cursor.MacInstall() ;

        return TRUE;
    }
    else
    {
        return FALSE;
    }
}

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 ) ;

    bool optionDown = GetCurrentKeyModifiers() & optionKey ;
    wxDragResult result = optionDown ? wxDragCopy : wxDragMove;

    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 ;
                ControlPartCode controlPart ;
                ControlRef control = wxMacFindControlUnderMouse( toplevel , localMouse ,
                    theWindow , &controlPart ) ;
                if ( control )
                    win = wxFindControlFromMacControl( control ) ;
                // TODO 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 ) ;
                            	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 ) == FALSE )
                {
                  if ( trackingGlobals->m_currentSource->MacInstallDefaultCursor( result ) == FALSE )
                  {
                      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:
                              // put these here to make gcc happy
                              ;
                      }
                  }
                }

          }
            // 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 ) )
        {
            bool optionDown = GetCurrentKeyModifiers() & optionKey ;
            wxDragResult result = optionDown ? wxDragCopy : wxDragMove;
            trackingGlobals->m_currentTarget->OnData( localx , localy , result ) ;
        }
    }
    return(noErr);
}
#endif
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: dnd.cpp
	3	// Purpose: wxDropTarget, wxDropSource, wxDataObject implementation
	4	// Author: Stefan Csomor
	5	// Modified by:
	6	// Created: 1998-01-01
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 1998 Stefan Csomor
	9	// Licence: wxWindows licence
	10	///////////////////////////////////////////////////////////////////////////////
	11
	12	#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
	13	#pragma implementation "dnd.h"
	14	#endif
	15
	16	#include "wx/wxprec.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	#ifndef __DARWIN__
	28	#include <Scrap.h>
	29	#endif
	30
	31	// ----------------------------------------------------------------------------
	32	// global
	33	// ----------------------------------------------------------------------------
	34
	35	void wxMacEnsureTrackingHandlersInstalled() ;
	36
	37	typedef struct
	38	{
	39	wxWindow* m_currentTargetWindow ;
	40	wxDropTarget* m_currentTarget ;
	41	wxDropSource* m_currentSource ;
	42	} MacTrackingGlobals ;
	43
	44	MacTrackingGlobals gTrackingGlobals ;
	45
	46	//----------------------------------------------------------------------------
	47	// wxDropTarget
	48	//----------------------------------------------------------------------------
	49
	50	wxDropTarget::wxDropTarget( wxDataObject *data )
	51	: wxDropTargetBase( data )
	52	{
	53	wxMacEnsureTrackingHandlersInstalled() ;
	54	}
	55
	56	wxDragResult wxDropTarget::OnDragOver( wxCoord WXUNUSED(x),
	57	wxCoord WXUNUSED(y),
	58	wxDragResult def )
	59	{
	60
	61	return CurrentDragHasSupportedFormat() ? def : wxDragNone;
	62	}
	63
	64	bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
	65	{
	66	if (!m_dataObject)
	67	return FALSE;
	68
	69	return CurrentDragHasSupportedFormat() ;
	70	}
	71
	72	wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
	73	wxDragResult def )
	74	{
	75	if (!m_dataObject)
	76	return wxDragNone;
	77
	78	if (!CurrentDragHasSupportedFormat())
	79	return wxDragNone;
	80
	81	return GetData() ? def : wxDragNone;
	82	}
	83
	84	bool wxDropTarget::CurrentDragHasSupportedFormat()
	85	{
	86	bool supported = false ;
	87	if ( gTrackingGlobals.m_currentSource != NULL )
	88	{
	89	wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject() ;
	90
	91	if ( data )
	92	{
	93	size_t formatcount = data->GetFormatCount() ;
	94	wxDataFormat *array = new wxDataFormat[ formatcount ];
	95	data->GetAllFormats( array );
	96	for (size_t i = 0; !supported && i < formatcount ; i++)
	97	{
	98	wxDataFormat format = array[i] ;
	99	if ( m_dataObject->IsSupported( format ) )
	100	{
	101	supported = true ;
	102	break ;
	103	}
	104	}
	105	delete[] array ;
	106	}
	107	}
	108	if ( !supported )
	109	{
	110	UInt16 items ;
	111	OSErr result;
	112	CountDragItems((DragReference)m_currentDrag, &items);
	113	for (UInt16 index = 1; index <= items && supported == false ; ++index)
	114	{
	115	ItemReference theItem;
	116	FlavorType theType ;
	117	UInt16 flavors = 0 ;
	118	GetDragItemReferenceNumber((DragReference)m_currentDrag, index, &theItem);
	119	CountDragItemFlavors( (DragReference)m_currentDrag, theItem , &flavors ) ;
	120	for ( UInt16 flavor = 1 ; flavor <= flavors ; ++flavor )
	121	{
	122	result = GetFlavorType((DragReference)m_currentDrag, theItem, flavor , &theType);
	123	if ( m_dataObject->IsSupportedFormat( wxDataFormat( theType ) ) )
	124	{
	125	supported = true ;
	126	break ;
	127	}
	128	}
	129	}
	130	}
	131	return supported ;
	132	}
	133
	134	bool wxDropTarget::GetData()
	135	{
	136	if (!m_dataObject)
	137	return FALSE;
	138
	139	if ( !CurrentDragHasSupportedFormat() )
	140	return FALSE ;
	141
	142	bool transferred = false ;
	143	if ( gTrackingGlobals.m_currentSource != NULL )
	144	{
	145	wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject() ;
	146
	147	if ( data )
	148	{
	149	size_t formatcount = data->GetFormatCount() ;
	150	wxDataFormat *array = new wxDataFormat[ formatcount ];
	151	data->GetAllFormats( array );
	152	for (size_t i = 0; !transferred && i < formatcount ; i++)
	153	{
	154	wxDataFormat format = array[i] ;
	155	if ( m_dataObject->IsSupported( format ) )
	156	{
	157	int size = data->GetDataSize( format );
	158	transferred = true ;
	159
	160	if (size == 0)
	161	{
	162	m_dataObject->SetData(format , 0 , 0 ) ;
	163	}
	164	else
	165	{
	166	char *d = new char[size];
	167	data->GetDataHere( format , (void*) d );
	168	m_dataObject->SetData( format , size , d ) ;
	169	delete[] d ;
	170	}
	171	}
	172	}
	173	delete[] array ;
	174	}
	175	}
	176	if ( !transferred )
	177	{
	178	UInt16 items ;
	179	OSErr result;
	180	bool firstFileAdded = false ;
	181	CountDragItems((DragReference)m_currentDrag, &items);
	182	for (UInt16 index = 1; index <= items; ++index)
	183	{
	184	ItemReference theItem;
	185	FlavorType theType ;
	186	UInt16 flavors = 0 ;
	187	GetDragItemReferenceNumber((DragReference)m_currentDrag, index, &theItem);
	188	CountDragItemFlavors( (DragReference)m_currentDrag, theItem , &flavors ) ;
	189	for ( UInt16 flavor = 1 ; flavor <= flavors ; ++flavor )
	190	{
	191	result = GetFlavorType((DragReference)m_currentDrag, theItem, flavor , &theType);
	192	wxDataFormat format(theType) ;
	193	if ( m_dataObject->IsSupportedFormat( format ) )
	194	{
	195	FlavorFlags theFlags;
	196	result = GetFlavorFlags((DragReference)m_currentDrag, theItem, theType, &theFlags);
	197	if (result == noErr)
	198	{
	199	Size dataSize ;
	200	Ptr theData ;
	201	GetFlavorDataSize((DragReference)m_currentDrag, theItem, theType, &dataSize);
	202	if ( theType == kScrapFlavorTypeText )
	203	{
	204	// this increment is only valid for allocating, on the next GetFlavorData
	205	// call it is reset again to the original value
	206	dataSize++ ;
	207	}
	208	else if ( theType == kScrapFlavorTypeUnicode )
	209	{
	210	// this increment is only valid for allocating, on the next GetFlavorData
	211	// call it is reset again to the original value
	212	dataSize++ ;
	213	dataSize++ ;
	214	}
	215	theData = new char[dataSize];
	216	GetFlavorData((DragReference)m_currentDrag, theItem, theType, (void*) theData, &dataSize, 0L);
	217	if( theType == kScrapFlavorTypeText )
	218	{
	219	theData[dataSize]=0 ;
	220	m_dataObject->SetData( wxDataFormat(wxDF_TEXT), dataSize , theData );
	221	}
	222	#if wxUSE_UNICODE
	223	else if ( theType == kScrapFlavorTypeUnicode )
	224	{
	225	theData[dataSize]=0 ;
	226	theData[dataSize+1]=0 ;
	227	m_dataObject->SetData( wxDataFormat(wxDF_UNICODETEXT), dataSize , theData );
	228	}
	229	#endif
	230	else if ( theType == kDragFlavorTypeHFS )
	231	{
	232	HFSFlavor* theFile = (HFSFlavor*) theData ;
	233	wxString name = wxMacFSSpec2MacFilename( &theFile->fileSpec ) ;
	234	if ( !firstFileAdded )
	235	{
	236	// reset file list
	237	((wxFileDataObject*)m_dataObject)->SetData( 0 , "" ) ;
	238	firstFileAdded = true ;
	239	}
	240	((wxFileDataObject*)m_dataObject)->AddFile( name ) ;
	241	}
	242	else
	243	{
	244	m_dataObject->SetData( format, dataSize, theData );
	245	}
	246	delete[] theData;
	247	}
	248	break ;
	249	}
	250	}
	251	}
	252	}
	253	return TRUE ;
	254	}
	255
	256	//-------------------------------------------------------------------------
	257	// wxDropSource
	258	//-------------------------------------------------------------------------
	259
	260	//-----------------------------------------------------------------------------
	261	// drag request
	262
	263	wxDropSource::wxDropSource(wxWindow *win,
	264	const wxCursor &cursorCopy,
	265	const wxCursor &cursorMove,
	266	const wxCursor &cursorStop)
	267	: wxDropSourceBase(cursorCopy, cursorMove, cursorStop)
	268	{
	269	wxMacEnsureTrackingHandlersInstalled() ;
	270	m_window = win;
	271	}
	272
	273	wxDropSource::wxDropSource(wxDataObject& data,
	274	wxWindow *win,
	275	const wxCursor &cursorCopy,
	276	const wxCursor &cursorMove,
	277	const wxCursor &cursorStop)
	278	: wxDropSourceBase(cursorCopy, cursorMove, cursorStop)
	279	{
	280	wxMacEnsureTrackingHandlersInstalled() ;
	281	SetData( data );
	282	m_window = win;
	283	}
	284
	285	wxDropSource::~wxDropSource()
	286	{
	287	}
	288
	289
	290	wxDragResult wxDropSource::DoDragDrop(int WXUNUSED(flags))
	291	{
	292	wxASSERT_MSG( m_data, wxT("Drop source: no data") );
	293
	294	if (!m_data)
	295	return (wxDragResult) wxDragNone;
	296
	297	if (m_data->GetFormatCount() == 0)
	298	return (wxDragResult) wxDragNone;
	299
	300	OSErr result;
	301	DragReference theDrag;
	302	RgnHandle dragRegion;
	303	if ((result = NewDrag(&theDrag)))
	304	{
	305	return wxDragNone ;
	306	}
	307	// add data to drag
	308	size_t formatCount = m_data->GetFormatCount() ;
	309	wxDataFormat *formats = new wxDataFormat[formatCount] ;
	310	m_data->GetAllFormats( formats ) ;
	311	ItemReference theItem = 1 ;
	312	for ( size_t i = 0 ; i < formatCount ; ++i )
	313	{
	314	size_t dataSize = m_data->GetDataSize( formats[i] ) ;
	315	Ptr dataPtr = new char[dataSize] ;
	316	m_data->GetDataHere( formats[i] , dataPtr ) ;
	317	OSType type = formats[i].GetFormatId() ;
	318	if ( type == 'TEXT' )
	319	{
	320	dataSize-- ;
	321	dataPtr[ dataSize ] = 0 ;
	322	wxString st( (wxChar*) dataPtr ) ;
	323	wxCharBuffer buf = st.mb_str( wxConvLocal) ;
	324	AddDragItemFlavor(theDrag, theItem, type , buf.data(), strlen(buf), 0);
	325	}
	326	else if (type == kDragFlavorTypeHFS )
	327	{
	328	HFSFlavor theFlavor ;
	329	OSErr err = noErr;
	330	CInfoPBRec cat;
	331
	332	wxMacFilename2FSSpec( wxString( dataPtr , *wxConvCurrent ) , &theFlavor.fileSpec ) ;
	333
	334	cat.hFileInfo.ioNamePtr = theFlavor.fileSpec.name;
	335	cat.hFileInfo.ioVRefNum = theFlavor.fileSpec.vRefNum;
	336	cat.hFileInfo.ioDirID = theFlavor.fileSpec.parID;
	337	cat.hFileInfo.ioFDirIndex = 0;
	338	err = PBGetCatInfoSync(&cat);
	339	if (err == noErr )
	340	{
	341	theFlavor.fdFlags = cat.hFileInfo.ioFlFndrInfo.fdFlags;
	342	if (theFlavor.fileSpec.parID == fsRtParID) {
	343	theFlavor.fileCreator = 'MACS';
	344	theFlavor.fileType = 'disk';
	345	} else if ((cat.hFileInfo.ioFlAttrib & ioDirMask) != 0) {
	346	theFlavor.fileCreator = 'MACS';
	347	theFlavor.fileType = 'fold';
	348	} else {
	349	theFlavor.fileCreator = cat.hFileInfo.ioFlFndrInfo.fdCreator;
	350	theFlavor.fileType = cat.hFileInfo.ioFlFndrInfo.fdType;
	351	}
	352	AddDragItemFlavor(theDrag, theItem, type , &theFlavor, sizeof(theFlavor), 0);
	353	}
	354	}
	355	else
	356	{
	357	AddDragItemFlavor(theDrag, theItem, type , dataPtr, dataSize, 0);
	358	}
	359	delete[] dataPtr ;
	360	}
	361	delete[] formats ;
	362
	363	dragRegion = NewRgn();
	364	RgnHandle tempRgn = NewRgn() ;
	365
	366	EventRecord* ev = NULL ;
	367	#if !TARGET_CARBON // TODO
	368	ev = (EventRecord*) wxTheApp->MacGetCurrentEvent() ;
	369	#else
	370	EventRecord rec ;
	371	ev = &rec ;
	372	wxMacConvertEventToRecord( (EventRef) wxTheApp->MacGetCurrentEvent() , &rec ) ;
	373	#endif
	374	const short dragRegionOuterBoundary = 10 ;
	375	const short dragRegionInnerBoundary = 9 ;
	376
	377	SetRectRgn( dragRegion , ev->where.h - dragRegionOuterBoundary ,
	378	ev->where.v - dragRegionOuterBoundary ,
	379	ev->where.h + dragRegionOuterBoundary ,
	380	ev->where.v + dragRegionOuterBoundary ) ;
	381
	382	SetRectRgn( tempRgn , ev->where.h - dragRegionInnerBoundary ,
	383	ev->where.v - dragRegionInnerBoundary ,
	384	ev->where.h + dragRegionInnerBoundary ,
	385	ev->where.v + dragRegionInnerBoundary ) ;
	386
	387	DiffRgn( dragRegion , tempRgn , dragRegion ) ;
	388	DisposeRgn( tempRgn ) ;
	389
	390	// TODO:work with promises in order to return data only when drag
	391	// was successfully completed
	392
	393	gTrackingGlobals.m_currentSource = this ;
	394	result = TrackDrag(theDrag, ev , dragRegion);
	395	DisposeRgn(dragRegion);
	396	DisposeDrag(theDrag);
	397	gTrackingGlobals.m_currentSource = NULL ;
	398
	399	bool optionDown = GetCurrentKeyModifiers() & optionKey ;
	400	wxDragResult dndresult = optionDown ? wxDragCopy : wxDragMove;
	401	return dndresult;
	402	}
	403
	404	bool wxDropSource::MacInstallDefaultCursor(wxDragResult effect)
	405	{
	406	const wxCursor& cursor = GetCursor(effect);
	407	if ( cursor.Ok() )
	408	{
	409	cursor.MacInstall() ;
	410
	411	return TRUE;
	412	}
	413	else
	414	{
	415	return FALSE;
	416	}
	417	}
	418
	419	bool gTrackingGlobalsInstalled = false ;
	420
	421	// passing the globals via refcon is not needed by the CFM and later architectures anymore
	422	// but I'll leave it in there, just in case...
	423
	424	pascal OSErr wxMacWindowDragTrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow,
	425	void *handlerRefCon, DragReference theDrag) ;
	426	pascal OSErr wxMacWindowDragReceiveHandler(WindowPtr theWindow, void *handlerRefCon,
	427	DragReference theDrag) ;
	428
	429	void wxMacEnsureTrackingHandlersInstalled()
	430	{
	431	if( !gTrackingGlobalsInstalled )
	432	{
	433	OSErr result;
	434
	435	result = InstallTrackingHandler(NewDragTrackingHandlerUPP(wxMacWindowDragTrackingHandler), 0L,&gTrackingGlobals);
	436	wxASSERT( result == noErr ) ;
	437	result = InstallReceiveHandler(NewDragReceiveHandlerUPP(wxMacWindowDragReceiveHandler), 0L, &gTrackingGlobals);
	438	wxASSERT( result == noErr ) ;
	439
	440	gTrackingGlobalsInstalled = true ;
	441	}
	442	}
	443
	444	pascal OSErr wxMacWindowDragTrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow,
	445	void *handlerRefCon, DragReference theDrag)
	446	{
	447	MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon;
	448	Point mouse, localMouse;
	449	DragAttributes attributes;
	450	GetDragAttributes(theDrag, &attributes);
	451	wxTopLevelWindowMac* toplevel = wxFindWinFromMacWindow( theWindow ) ;
	452
	453	bool optionDown = GetCurrentKeyModifiers() & optionKey ;
	454	wxDragResult result = optionDown ? wxDragCopy : wxDragMove;
	455
	456	switch(theMessage)
	457	{
	458	case kDragTrackingEnterHandler:
	459	break;
	460	case kDragTrackingLeaveHandler:
	461	break;
	462	case kDragTrackingEnterWindow:
	463	trackingGlobals->m_currentTargetWindow = NULL ;
	464	trackingGlobals->m_currentTarget = NULL ;
	465	break;
	466	case kDragTrackingInWindow:
	467	if (toplevel == NULL)
	468	break;
	469
	470	GetDragMouse(theDrag, &mouse, 0L);
	471	localMouse = mouse;
	472	GlobalToLocal(&localMouse);
	473
	474
	475
	476	// if (attributes & kDragHasLeftSenderWindow)
	477	{
	478	// wxPoint point(localMouse.h , localMouse.v) ;
	479	wxWindow *win = NULL ;
	480	ControlPartCode controlPart ;
	481	ControlRef control = wxMacFindControlUnderMouse( toplevel , localMouse ,
	482	theWindow , &controlPart ) ;
	483	if ( control )
	484	win = wxFindControlFromMacControl( control ) ;
	485	// TODO toplevel->MacGetWindowFromPointSub( point , &win ) ;
	486	int localx , localy ;
	487	localx = localMouse.h ;
	488	localy = localMouse.v ;
	489	//TODO : should we use client coordinates
	490	if ( win )
	491	win->MacRootWindowToWindow( &localx , &localy ) ;
	492	if ( win != trackingGlobals->m_currentTargetWindow )
	493	{
	494	if ( trackingGlobals->m_currentTargetWindow )
	495	{
	496	// this window is left
	497	if ( trackingGlobals->m_currentTarget )
	498	{
	499	HideDragHilite(theDrag);
	500	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
	501	trackingGlobals->m_currentTarget->OnLeave() ;
	502	trackingGlobals->m_currentTarget = NULL;
	503	trackingGlobals->m_currentTargetWindow = NULL ;
	504	}
	505	}
	506	if ( win )
	507	{
	508	// this window is entered
	509	trackingGlobals->m_currentTargetWindow = win ;
	510	trackingGlobals->m_currentTarget = win->GetDropTarget() ;
	511	{
	512
	513	if ( trackingGlobals->m_currentTarget )
	514	{
	515	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
	516	result = trackingGlobals->m_currentTarget->OnEnter(
	517	localx , localy , result ) ;
	518	}
	519
	520
	521	if ( result != wxDragNone )
	522	{
	523	int x , y ;
	524	x = y = 0 ;
	525	win->MacWindowToRootWindow( &x , &y ) ;
	526	RgnHandle hiliteRgn = NewRgn() ;
	527	Rect r = { y , x , y+win->GetSize().y , x+win->GetSize().x } ;
	528	RectRgn( hiliteRgn , &r ) ;
	529	ShowDragHilite(theDrag, hiliteRgn, true);
	530	DisposeRgn( hiliteRgn ) ;
	531	}
	532	}
	533	}
	534	}
	535	else
	536	{
	537	if( trackingGlobals->m_currentTarget )
	538	{
	539	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
	540	trackingGlobals->m_currentTarget->OnDragOver(
	541	localx , localy , result ) ;
	542	}
	543	}
	544
	545	// set cursor for OnEnter and OnDragOver
	546	if ( trackingGlobals->m_currentSource && trackingGlobals->m_currentSource->GiveFeedback( result ) == FALSE )
	547	{
	548	if ( trackingGlobals->m_currentSource->MacInstallDefaultCursor( result ) == FALSE )
	549	{
	550	switch( result )
	551	{
	552	case wxDragCopy :
	553	{
	554	wxCursor cursor(wxCURSOR_COPY_ARROW) ;
	555	cursor.MacInstall() ;
	556	}
	557	break ;
	558	case wxDragMove :
	559	{
	560	wxCursor cursor(wxCURSOR_ARROW) ;
	561	cursor.MacInstall() ;
	562	}
	563	break ;
	564	case wxDragNone :
	565	{
	566	wxCursor cursor(wxCURSOR_NO_ENTRY) ;
	567	cursor.MacInstall() ;
	568	}
	569	break ;
	570
	571	case wxDragError:
	572	case wxDragLink:
	573	case wxDragCancel:
	574	// put these here to make gcc happy
	575	;
	576	}
	577	}
	578	}
	579
	580	}
	581	// MyTrackItemUnderMouse(localMouse, theWindow);
	582	break;
	583	case kDragTrackingLeaveWindow:
	584	if (trackingGlobals->m_currentTarget)
	585	{
	586	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
	587	trackingGlobals->m_currentTarget->OnLeave() ;
	588	HideDragHilite(theDrag);
	589	trackingGlobals->m_currentTarget = NULL ;
	590	}
	591	trackingGlobals->m_currentTargetWindow = NULL ;
	592	break;
	593	}
	594	return(noErr);
	595	}
	596
	597	pascal OSErr wxMacWindowDragReceiveHandler(WindowPtr theWindow,
	598	void *handlerRefCon,
	599	DragReference theDrag)
	600	{
	601	MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon;
	602	if ( trackingGlobals->m_currentTarget )
	603	{
	604	Point mouse,localMouse ;
	605	int localx,localy ;
	606
	607	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
	608	GetDragMouse(theDrag, &mouse, 0L);
	609	localMouse = mouse;
	610	GlobalToLocal(&localMouse);
	611	localx = localMouse.h ;
	612	localy = localMouse.v ;
	613	//TODO : should we use client coordinates
	614	if ( trackingGlobals->m_currentTargetWindow )
	615	trackingGlobals->m_currentTargetWindow->MacRootWindowToWindow( &localx , &localy ) ;
	616	if ( trackingGlobals->m_currentTarget->OnDrop( localx , localy ) )
	617	{
	618	bool optionDown = GetCurrentKeyModifiers() & optionKey ;
	619	wxDragResult result = optionDown ? wxDragCopy : wxDragMove;
	620	trackingGlobals->m_currentTarget->OnData( localx , localy , result ) ;
	621	}
	622	}
	623	return(noErr);
	624	}
	625	#endif