[wxWidgets.git] / src / mac / classic / 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
///////////////////////////////////////////////////////////////////////////////

#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;
        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 == 'TEXT' )
                        {
                            // this increment is only valid for allocating, on the next GetFlavorData
                            // call it is reset again to the original value
                            dataSize++ ;
                        }
                        theData = new char[dataSize];
                        GetFlavorData((DragReference)m_currentDrag, theItem, theType, (void*) theData, &dataSize, 0L); 
                        if( theType == 'TEXT' )
                        {
                            theData[dataSize]=0 ; 
                            wxString convert( theData , wxConvLocal ) ;    
                            m_dataObject->SetData( format, convert.Length() * sizeof(wxChar), (const wxChar*) convert );
                        }
                        else if ( theType == kDragFlavorTypeHFS )
                        {
                            HFSFlavor* theFile = (HFSFlavor*) theData ;
                            wxString name = wxMacFSSpec2MacFilename( &theFile->fileSpec ) ;
                            if (  firstFileAdded )
                                ((wxFileDataObject*)m_dataObject)->AddFile( name ) ;
                            else
                            {
                                ((wxFileDataObject*)m_dataObject)->SetData( 0 , name.c_str() ) ;
                                firstFileAdded = true ;    
                            }
                        }
                        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( 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 = 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 ;
    
    KeyMap keymap;
    GetKeys(keymap);
    bool optionDown = keymap[1] & 4;
    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( (WXWindow) theWindow ) ; 

    KeyMap keymap;
    GetKeys(keymap);
    bool optionDown = keymap[1] & 4;
    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 ;
                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() ;
                                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 , 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 ) )
        {
            KeyMap keymap;
            GetKeys(keymap);
            bool optionDown = keymap[1] & 4;
            wxDragResult result = optionDown ? wxDragCopy : wxDragMove;
            trackingGlobals->m_currentTarget->OnData( localx , localy , result ) ;
        }
    }
    return(noErr);
}
#endif
Commit	Line	Data
2646f485 SC	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
65571936	9	// Licence: wxWindows licence
2646f485 SC	10	///////////////////////////////////////////////////////////////////////////////
2646f485 SC	11
2646f485 SC	12	#include "wx/defs.h"
	13
	14	#if wxUSE_DRAG_AND_DROP
	15
	16	#include "wx/dnd.h"
	17	#include "wx/window.h"
	18	#include "wx/toplevel.h"
	19	#include "wx/app.h"
	20	#include "wx/gdicmn.h"
	21	#include "wx/mac/private.h"
	22
	23	// ----------------------------------------------------------------------------
	24	// global
	25	// ----------------------------------------------------------------------------
	26
	27	void wxMacEnsureTrackingHandlersInstalled() ;
	28
	29	typedef struct
	30	{
	31	wxWindow* m_currentTargetWindow ;
	32	wxDropTarget* m_currentTarget ;
	33	wxDropSource* m_currentSource ;
	34	} MacTrackingGlobals ;
	35
	36	MacTrackingGlobals gTrackingGlobals ;
	37
	38	//----------------------------------------------------------------------------
	39	// wxDropTarget
	40	//----------------------------------------------------------------------------
	41
	42	wxDropTarget::wxDropTarget( wxDataObject *data )
	43	: wxDropTargetBase( data )
	44	{
	45	wxMacEnsureTrackingHandlersInstalled() ;
	46	}
	47
	48	wxDragResult wxDropTarget::OnDragOver( wxCoord WXUNUSED(x),
	49	wxCoord WXUNUSED(y),
	50	wxDragResult def )
	51	{
	52
	53	return CurrentDragHasSupportedFormat() ? def : wxDragNone;
	54	}
	55
	56	bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
	57	{
	58	if (!m_dataObject)
	59	return FALSE;
	60
	61	return CurrentDragHasSupportedFormat() ;
	62	}
	63
	64	wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
	65	wxDragResult def )
	66	{
	67	if (!m_dataObject)
	68	return wxDragNone;
	69
	70	if (!CurrentDragHasSupportedFormat())
	71	return wxDragNone;
	72
	73	return GetData() ? def : wxDragNone;
	74	}
	75
76	bool wxDropTarget::CurrentDragHasSupportedFormat()
77	{
78	bool supported = false ;
79	if ( gTrackingGlobals.m_currentSource != NULL )
80	{
81	wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject() ;
82
83	if ( data )
84	{
85	size_t formatcount = data->GetFormatCount() ;
86	wxDataFormat *array = new wxDataFormat[ formatcount ];
87	data->GetAllFormats( array );
88	for (size_t i = 0; !supported && i < formatcount ; i++)
89	{
90	wxDataFormat format = array[i] ;
91	if ( m_dataObject->IsSupported( format ) )
92	{
93	supported = true ;
94	break ;
95	}
96	}
97	delete[] array ;
98	}
99	}
100	if ( !supported )
101	{
102	UInt16 items ;
103	OSErr result;
104	CountDragItems((DragReference)m_currentDrag, &items);
105	for (UInt16 index = 1; index <= items && supported == false ; ++index)
106	{
107	ItemReference theItem;
108	FlavorType theType ;
109	UInt16 flavors = 0 ;
110	GetDragItemReferenceNumber((DragReference)m_currentDrag, index, &theItem);
111	CountDragItemFlavors( (DragReference)m_currentDrag, theItem , &flavors ) ;
112	for ( UInt16 flavor = 1 ; flavor <= flavors ; ++flavor )
113	{
114	result = GetFlavorType((DragReference)m_currentDrag, theItem, flavor , &theType);
115	if ( m_dataObject->IsSupportedFormat( wxDataFormat( theType ) ) )
116	{
117	supported = true ;
118	break ;
119	}
120	}
121	}
122	}
123	return supported ;
124	}
125
126	bool wxDropTarget::GetData()
127	{
128	if (!m_dataObject)
129	return FALSE;
130
131	if ( !CurrentDragHasSupportedFormat() )
132	return FALSE ;
133
134	bool transferred = false ;
135	if ( gTrackingGlobals.m_currentSource != NULL )
136	{
137	wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject() ;
138
139	if ( data )
140	{
141	size_t formatcount = data->GetFormatCount() ;
142	wxDataFormat *array = new wxDataFormat[ formatcount ];
143	data->GetAllFormats( array );
144	for (size_t i = 0; !transferred && i < formatcount ; i++)
145	{
146	wxDataFormat format = array[i] ;
147	if ( m_dataObject->IsSupported( format ) )
148	{
149	int size = data->GetDataSize( format );
150	transferred = true ;
151
152	if (size == 0)
153	{
154	m_dataObject->SetData(format , 0 , 0 ) ;
155	}
156	else
157	{
158	char *d = new char[size];
159	data->GetDataHere( format , (void*) d );
160	m_dataObject->SetData( format , size , d ) ;
161	delete[] d ;
162	}
163	}
164	}
165	delete[] array ;
166	}
167	}
168	if ( !transferred )
169	{
170	UInt16 items ;
171	OSErr result;
172	bool firstFileAdded = false ;
173	CountDragItems((DragReference)m_currentDrag, &items);
174	for (UInt16 index = 1; index <= items; ++index)
175	{
176	ItemReference theItem;
177	FlavorType theType ;
178	UInt16 flavors = 0 ;
179	GetDragItemReferenceNumber((DragReference)m_currentDrag, index, &theItem);
180	CountDragItemFlavors( (DragReference)m_currentDrag, theItem , &flavors ) ;
181	for ( UInt16 flavor = 1 ; flavor <= flavors ; ++flavor )
182	{
183	result = GetFlavorType((DragReference)m_currentDrag, theItem, flavor , &theType);
184	wxDataFormat format(theType) ;
185	if ( m_dataObject->IsSupportedFormat( format ) )
186	{
187	FlavorFlags theFlags;
188	result = GetFlavorFlags((DragReference)m_currentDrag, theItem, theType, &theFlags);
189	if (result == noErr)
190	{
191	Size dataSize ;
192	Ptr theData ;
193	GetFlavorDataSize((DragReference)m_currentDrag, theItem, theType, &dataSize);
194	if ( theType == 'TEXT' )
195	{
196	// this increment is only valid for allocating, on the next GetFlavorData
197	// call it is reset again to the original value
198	dataSize++ ;
199	}
200	theData = new char[dataSize];
201	GetFlavorData((DragReference)m_currentDrag, theItem, theType, (void*) theData, &dataSize, 0L);
202	if( theType == 'TEXT' )
203	{
204	theData[dataSize]=0 ;
205	wxString convert( theData , wxConvLocal ) ;
206	m_dataObject->SetData( format, convert.Length() * sizeof(wxChar), (const wxChar*) convert );
207	}
208	else if ( theType == kDragFlavorTypeHFS )
209	{
210	HFSFlavor* theFile = (HFSFlavor*) theData ;
211	wxString name = wxMacFSSpec2MacFilename( &theFile->fileSpec ) ;
212	if ( firstFileAdded )
213	((wxFileDataObject*)m_dataObject)->AddFile( name ) ;
214	else
215	{
216	((wxFileDataObject*)m_dataObject)->SetData( 0 , name.c_str() ) ;
217	firstFileAdded = true ;
218	}
219	}
220	else
221	{
222	m_dataObject->SetData( format, dataSize, theData );
223	}
224	delete[] theData;
225	}
226	break ;
227	}
228	}
229	}
230	}
231	return TRUE ;
232	}
233
234	//-------------------------------------------------------------------------
235	// wxDropSource
236	//-------------------------------------------------------------------------
237
238	//-----------------------------------------------------------------------------
239	// drag request
240
241	wxDropSource::wxDropSource(wxWindow *win,
242	const wxCursor &cursorCopy,
243	const wxCursor &cursorMove,
244	const wxCursor &cursorStop)
245	: wxDropSourceBase(cursorCopy, cursorMove, cursorStop)
246	{
247	wxMacEnsureTrackingHandlersInstalled() ;
248	m_window = win;
249	}
250
251	wxDropSource::wxDropSource(wxDataObject& data,
252	wxWindow *win,
253	const wxCursor &cursorCopy,
254	const wxCursor &cursorMove,
255	const wxCursor &cursorStop)
256	: wxDropSourceBase(cursorCopy, cursorMove, cursorStop)
257	{
258	wxMacEnsureTrackingHandlersInstalled() ;
259	SetData( data );
260	m_window = win;
261	}
262
263	wxDropSource::~wxDropSource()
264	{
265	}
266
267
268	wxDragResult wxDropSource::DoDragDrop(int WXUNUSED(flags))
269	{
270	wxASSERT_MSG( m_data, wxT("Drop source: no data") );
271
272	if (!m_data)
273	return (wxDragResult) wxDragNone;
274
275	if (m_data->GetFormatCount() == 0)
276	return (wxDragResult) wxDragNone;
277
278	OSErr result;
279	DragReference theDrag;
280	RgnHandle dragRegion;
281	if ((result = NewDrag(&theDrag)))
282	{
283	return wxDragNone ;
284	}
285	// add data to drag
286	size_t formatCount = m_data->GetFormatCount() ;
287	wxDataFormat *formats = new wxDataFormat[formatCount] ;
288	m_data->GetAllFormats( formats ) ;
289	ItemReference theItem = 1 ;
290	for ( size_t i = 0 ; i < formatCount ; ++i )
291	{
292	size_t dataSize = m_data->GetDataSize( formats[i] ) ;
293	Ptr dataPtr = new char[dataSize] ;
294	m_data->GetDataHere( formats[i] , dataPtr ) ;
295	OSType type = formats[i].GetFormatId() ;
296	if ( type == 'TEXT' )
297	{
298	dataSize-- ;
299	dataPtr[ dataSize ] = 0 ;
300	wxString st( (wxChar*) dataPtr ) ;
301	wxCharBuffer buf = st.mb_str( wxConvLocal) ;
302	AddDragItemFlavor(theDrag, theItem, type , buf.data(), strlen(buf), 0);
303	}
304	else if (type == kDragFlavorTypeHFS )
305	{
306	HFSFlavor theFlavor ;
307	OSErr err = noErr;
308	CInfoPBRec cat;
309
310	wxMacFilename2FSSpec( dataPtr , &theFlavor.fileSpec ) ;
311
312	cat.hFileInfo.ioNamePtr = theFlavor.fileSpec.name;
313	cat.hFileInfo.ioVRefNum = theFlavor.fileSpec.vRefNum;
314	cat.hFileInfo.ioDirID = theFlavor.fileSpec.parID;
315	cat.hFileInfo.ioFDirIndex = 0;
316	err = PBGetCatInfoSync(&cat);
317	if (err == noErr )
318	{
319	theFlavor.fdFlags = cat.hFileInfo.ioFlFndrInfo.fdFlags;
320	if (theFlavor.fileSpec.parID == fsRtParID) {
321	theFlavor.fileCreator = 'MACS';
322	theFlavor.fileType = 'disk';
323	} else if ((cat.hFileInfo.ioFlAttrib & ioDirMask) != 0) {
324	theFlavor.fileCreator = 'MACS';
325	theFlavor.fileType = 'fold';
326	} else {
327	theFlavor.fileCreator = cat.hFileInfo.ioFlFndrInfo.fdCreator;
328	theFlavor.fileType = cat.hFileInfo.ioFlFndrInfo.fdType;
329	}
330	AddDragItemFlavor(theDrag, theItem, type , &theFlavor, sizeof(theFlavor), 0);
331	}
332	}
333	else
334	{
335	AddDragItemFlavor(theDrag, theItem, type , dataPtr, dataSize, 0);
336	}
337	delete[] dataPtr ;
338	}
339	delete[] formats ;
340
341	dragRegion = NewRgn();
342	RgnHandle tempRgn = NewRgn() ;
343
344	EventRecord* ev = NULL ;
345	#if !TARGET_CARBON // TODO
346	ev = (EventRecord*) wxTheApp->MacGetCurrentEvent() ;
347	#else
348	EventRecord rec ;
349	ev = &rec ;
350	wxMacConvertEventToRecord( (EventRef) wxTheApp->MacGetCurrentEvent() , &rec ) ;
351	#endif
352	const short dragRegionOuterBoundary = 10 ;
353	const short dragRegionInnerBoundary = 9 ;
354
355	SetRectRgn( dragRegion , ev->where.h - dragRegionOuterBoundary ,
356	ev->where.v - dragRegionOuterBoundary ,
357	ev->where.h + dragRegionOuterBoundary ,
358	ev->where.v + dragRegionOuterBoundary ) ;
359
360	SetRectRgn( tempRgn , ev->where.h - dragRegionInnerBoundary ,
361	ev->where.v - dragRegionInnerBoundary ,
362	ev->where.h + dragRegionInnerBoundary ,
363	ev->where.v + dragRegionInnerBoundary ) ;
364
365	DiffRgn( dragRegion , tempRgn , dragRegion ) ;
366	DisposeRgn( tempRgn ) ;
367
368	// TODO:work with promises in order to return data only when drag
369	// was successfully completed
370
371	gTrackingGlobals.m_currentSource = this ;
372	result = TrackDrag(theDrag, ev , dragRegion);
373	DisposeRgn(dragRegion);
374	DisposeDrag(theDrag);
375	gTrackingGlobals.m_currentSource = NULL ;
376
377	KeyMap keymap;
378	GetKeys(keymap);
379	bool optionDown = keymap[1] & 4;
380	wxDragResult dndresult = optionDown ? wxDragCopy : wxDragMove;
381	return dndresult;
382	}
383
384	bool wxDropSource::MacInstallDefaultCursor(wxDragResult effect)
385	{
386	const wxCursor& cursor = GetCursor(effect);
387	if ( cursor.Ok() )
388	{
389	cursor.MacInstall() ;
390
391	return TRUE;
392	}
393	else
394	{
395	return FALSE;
396	}
397	}
398
399	bool gTrackingGlobalsInstalled = false ;
400
401	// passing the globals via refcon is not needed by the CFM and later architectures anymore
402	// but I'll leave it in there, just in case...
403
404	pascal OSErr wxMacWindowDragTrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow,
405	void *handlerRefCon, DragReference theDrag) ;
406	pascal OSErr wxMacWindowDragReceiveHandler(WindowPtr theWindow, void *handlerRefCon,
407	DragReference theDrag) ;
408
409	void wxMacEnsureTrackingHandlersInstalled()
410	{
411	if( !gTrackingGlobalsInstalled )
412	{
413	OSErr result;
414
415	result = InstallTrackingHandler(NewDragTrackingHandlerUPP(wxMacWindowDragTrackingHandler), 0L,&gTrackingGlobals);
416	wxASSERT( result == noErr ) ;
417	result = InstallReceiveHandler(NewDragReceiveHandlerUPP(wxMacWindowDragReceiveHandler), 0L, &gTrackingGlobals);
418	wxASSERT( result == noErr ) ;
419
420	gTrackingGlobalsInstalled = true ;
421	}
422	}
423
424	pascal OSErr wxMacWindowDragTrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow,
425	void *handlerRefCon, DragReference theDrag)
426	{
427	MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon;
428	Point mouse, localMouse;
429	DragAttributes attributes;
430	GetDragAttributes(theDrag, &attributes);
6bc3b8e9	431	wxTopLevelWindowMac* toplevel = wxFindWinFromMacWindow( (WXWindow) theWindow ) ;
2646f485 SC	432
	433	KeyMap keymap;
	434	GetKeys(keymap);
	435	bool optionDown = keymap[1] & 4;
	436	wxDragResult result = optionDown ? wxDragCopy : wxDragMove;
	437
	438	switch(theMessage)
	439	{
	440	case kDragTrackingEnterHandler:
	441	break;
	442	case kDragTrackingLeaveHandler:
	443	break;
	444	case kDragTrackingEnterWindow:
	445	trackingGlobals->m_currentTargetWindow = NULL ;
	446	trackingGlobals->m_currentTarget = NULL ;
	447	break;
	448	case kDragTrackingInWindow:
	449	if (toplevel == NULL)
	450	break;
	451
	452	GetDragMouse(theDrag, &mouse, 0L);
	453	localMouse = mouse;
	454	GlobalToLocal(&localMouse);
	455
	456
	457
	458	// if (attributes & kDragHasLeftSenderWindow)
	459	{
	460	wxPoint point(localMouse.h , localMouse.v) ;
	461	wxWindow *win = NULL ;
	462	toplevel->MacGetWindowFromPointSub( point , &win ) ;
	463	int localx , localy ;
	464	localx = localMouse.h ;
	465	localy = localMouse.v ;
	466	//TODO : should we use client coordinates
	467	if ( win )
	468	win->MacRootWindowToWindow( &localx , &localy ) ;
	469	if ( win != trackingGlobals->m_currentTargetWindow )
	470	{
	471	if ( trackingGlobals->m_currentTargetWindow )
	472	{
	473	// this window is left
	474	if ( trackingGlobals->m_currentTarget )
	475	{
	476	HideDragHilite(theDrag);
	477	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
	478	trackingGlobals->m_currentTarget->OnLeave() ;
	479	trackingGlobals->m_currentTarget = NULL;
	480	trackingGlobals->m_currentTargetWindow = NULL ;
	481	}
	482	}
	483	if ( win )
	484	{
	485	// this window is entered
	486	trackingGlobals->m_currentTargetWindow = win ;
	487	trackingGlobals->m_currentTarget = win->GetDropTarget() ;
	488	{
	489
	490	if ( trackingGlobals->m_currentTarget )
	491	{
	492	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
	493	result = trackingGlobals->m_currentTarget->OnEnter(
	494	localx , localy , result ) ;
	495	}
496
497
498	if ( result != wxDragNone )
499	{
500	int x , y ;
501	x = y = 0 ;
502	win->MacWindowToRootWindow( &x , &y ) ;
503	RgnHandle hiliteRgn = NewRgn() ;
504	SetRectRgn( hiliteRgn , x , y , x+win->GetSize().x ,y+win->GetSize().y) ;
505	ShowDragHilite(theDrag, hiliteRgn, true);
506	DisposeRgn( hiliteRgn ) ;
507	}
508	}
509	}
510	}
511	else
512	{
513	if( trackingGlobals->m_currentTarget )
514	{
515	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
516	trackingGlobals->m_currentTarget->OnDragOver(
517	localx , localy , result ) ;
518	}
519	}
520
521	// set cursor for OnEnter and OnDragOver
522	if ( trackingGlobals->m_currentSource && trackingGlobals->m_currentSource->GiveFeedback( result ) == FALSE )
523	{
524	if ( trackingGlobals->m_currentSource->MacInstallDefaultCursor( result ) == FALSE )
525	{
526	switch( result )
527	{
528	case wxDragCopy :
529	{
530	wxCursor cursor(wxCURSOR_COPY_ARROW) ;
531	cursor.MacInstall() ;
532	}
533	break ;
534	case wxDragMove :
535	{
536	wxCursor cursor(wxCURSOR_ARROW) ;
537	cursor.MacInstall() ;
538	}
539	break ;
540	case wxDragNone :
541	{
542	wxCursor cursor(wxCURSOR_NO_ENTRY) ;
543	cursor.MacInstall() ;
544	}
545	break ;
546
547	case wxDragError:
548	case wxDragLink:
549	case wxDragCancel:
550	// put these here to make gcc happy
551	;
552	}
553	}
554	}
555
556	}
557	// MyTrackItemUnderMouse(localMouse, theWindow);
558	break;
559	case kDragTrackingLeaveWindow:
560	if (trackingGlobals->m_currentTarget)
561	{
562	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
563	trackingGlobals->m_currentTarget->OnLeave() ;
564	HideDragHilite(theDrag);
565	trackingGlobals->m_currentTarget = NULL ;
566	}
567	trackingGlobals->m_currentTargetWindow = NULL ;
568	break;
569	}
570	return(noErr);
571	}
572
573	pascal OSErr wxMacWindowDragReceiveHandler(WindowPtr theWindow,
574	void *handlerRefCon,
575	DragReference theDrag)
576	{
577	MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon;
578	if ( trackingGlobals->m_currentTarget )
579	{
580	Point mouse,localMouse ;
581	int localx,localy ;
582
583	trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag ) ;
584	GetDragMouse(theDrag, &mouse, 0L);
585	localMouse = mouse;
586	GlobalToLocal(&localMouse);
587	localx = localMouse.h ;
588	localy = localMouse.v ;
589	//TODO : should we use client coordinates
590	if ( trackingGlobals->m_currentTargetWindow )
591	trackingGlobals->m_currentTargetWindow->MacRootWindowToWindow( &localx , &localy ) ;
592	if ( trackingGlobals->m_currentTarget->OnDrop( localx , localy ) )
593	{
594	KeyMap keymap;
595	GetKeys(keymap);
596	bool optionDown = keymap[1] & 4;
597	wxDragResult result = optionDown ? wxDragCopy : wxDragMove;
598	trackingGlobals->m_currentTarget->OnData( localx , localy , result ) ;
599	}
600	}
601	return(noErr);
602	}
603	#endif