src/mac/carbon/dnd.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/dnd.cpp
   3 // Purpose:     wxDropTarget, wxDropSource implementations
   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 #include "wx/wxprec.h"
  13
  14 #if wxUSE_DRAG_AND_DROP
  15
  16 #include "wx/dnd.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/app.h"
  20     #include "wx/toplevel.h"
  21     #include "wx/gdicmn.h"
  22 #endif // WX_PRECOMP
  23
  24 #include "wx/mac/private.h"
  25
  26 #ifndef __DARWIN__
  27     #include <Scrap.h>
  28 #endif
  29
  30
  31 // ----------------------------------------------------------------------------
  32 // globals
  33 // ----------------------------------------------------------------------------
  34
  35 typedef struct
  36 {
  37     wxWindow *m_currentTargetWindow;
  38     wxDropTarget *m_currentTarget;
  39     wxDropSource *m_currentSource;
  40 } MacTrackingGlobals;
  41
  42 MacTrackingGlobals gTrackingGlobals;
  43
  44 void wxMacEnsureTrackingHandlersInstalled();
  45
  46 //----------------------------------------------------------------------------
  47 // wxDropTarget
  48 //----------------------------------------------------------------------------
  49
  50 wxDropTarget::wxDropTarget( wxDataObject *data )
  51             : wxDropTargetBase( data )
  52 {
  53     wxMacEnsureTrackingHandlersInstalled();
  54 }
  55
  56 wxDragResult wxDropTarget::OnDragOver(
  57     wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
  58     wxDragResult def )
  59 {
  60     return CurrentDragHasSupportedFormat() ? def : wxDragNone;
  61 }
  62
  63 bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
  64 {
  65     if (m_dataObject == NULL)
  66         return false;
  67
  68     return CurrentDragHasSupportedFormat();
  69 }
  70
  71 wxDragResult wxDropTarget::OnData(
  72     wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
  73     wxDragResult def )
  74 {
  75     if (m_dataObject == NULL)
  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
  88     if ( gTrackingGlobals.m_currentSource != NULL )
  89     {
  90         wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject();
  91
  92         if ( data )
  93         {
  94             size_t formatcount = data->GetFormatCount();
  95             wxDataFormat *array = new wxDataFormat[formatcount];
  96             data->GetAllFormats( array );
  97             for (size_t i = 0; !supported && i < formatcount; i++)
  98             {
  99                 wxDataFormat format = array[i];
 100                 if ( m_dataObject->IsSupported( format ) )
 101                 {
 102                     supported = true;
 103                     break;
 104                 }
 105             }
 106
 107             delete [] array;
 108         }
 109     }
 110
 111     if ( !supported )
 112     {
 113         UInt16 items;
 114         ItemReference theItem;
 115         FlavorType theType;
 116         UInt16 flavors = 0;
 117
 118         CountDragItems( (DragReference)m_currentDrag, &items );
 119         for (UInt16 index = 1; index <= items && !supported; ++index)
 120         {
 121             flavors = 0;
 122             GetDragItemReferenceNumber( (DragReference)m_currentDrag, index, &theItem );
 123             CountDragItemFlavors( (DragReference)m_currentDrag, theItem, &flavors );
 124
 125             for ( UInt16 flavor = 1; flavor <= flavors; ++flavor )
 126             {
 127                 GetFlavorType( (DragReference)m_currentDrag, theItem, flavor, &theType );
 128                 if ( m_dataObject->IsSupportedFormat( wxDataFormat( theType ) ) )
 129                 {
 130                     supported = true;
 131                     break;
 132                 }
 133             }
 134         }
 135     }
 136
 137     return supported;
 138 }
 139
 140 bool wxDropTarget::GetData()
 141 {
 142     if (m_dataObject == NULL)
 143         return false;
 144
 145     if ( !CurrentDragHasSupportedFormat() )
 146         return false;
 147
 148     bool transferred = false;
 149     if ( gTrackingGlobals.m_currentSource != NULL )
 150     {
 151         wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject();
 152
 153         if (data != NULL)
 154         {
 155             size_t formatcount = data->GetFormatCount();
 156             wxDataFormat *array = new wxDataFormat[formatcount];
 157             data->GetAllFormats( array );
 158             for (size_t i = 0; !transferred && i < formatcount; i++)
 159             {
 160                 wxDataFormat format = array[i];
 161                 if ( m_dataObject->IsSupported( format ) )
 162                 {
 163                     int size = data->GetDataSize( format );
 164                     transferred = true;
 165
 166                     if (size == 0)
 167                     {
 168                         m_dataObject->SetData( format, 0, 0 );
 169                     }
 170                     else
 171                     {
 172                         char *d = new char[size];
 173                         data->GetDataHere( format, (void*)d );
 174                         m_dataObject->SetData( format, size, d );
 175                         delete [] d;
 176                     }
 177                 }
 178             }
 179
 180             delete [] array;
 181         }
 182     }
 183
 184     if ( !transferred )
 185     {
 186         UInt16 items;
 187         OSErr result;
 188         ItemReference theItem;
 189         FlavorType theType;
 190         FlavorFlags theFlags;
 191         UInt16 flavors;
 192         wxString filenamesPassed;
 193
 194         CountDragItems( (DragReference)m_currentDrag, &items );
 195         for (UInt16 index = 1; index <= items; ++index)
 196         {
 197             flavors = 0;
 198             GetDragItemReferenceNumber( (DragReference)m_currentDrag, index, &theItem );
 199             CountDragItemFlavors( (DragReference)m_currentDrag, theItem, &flavors );
 200             wxDataFormat preferredFormat = m_dataObject->GetPreferredFormat( wxDataObject::Set );
 201             bool hasPreferredFormat = false;
 202
 203             for (UInt16 flavor = 1; flavor <= flavors; ++flavor)
 204             {
 205                 result = GetFlavorType( (DragReference)m_currentDrag, theItem, flavor, &theType );
 206                 wxDataFormat format( theType );
 207                 if (preferredFormat == format)
 208                 {
 209                     hasPreferredFormat = true;
 210                     break;
 211                 }
 212             }
 213
 214             for (UInt16 flavor = 1; flavor <= flavors; ++flavor)
 215             {
 216                 result = GetFlavorType( (DragReference)m_currentDrag, theItem, flavor, &theType );
 217                 wxDataFormat format( theType );
 218                 if ((hasPreferredFormat && format == preferredFormat)
 219                     || (!hasPreferredFormat && m_dataObject->IsSupportedFormat( format )))
 220                 {
 221                     result = GetFlavorFlags( (DragReference)m_currentDrag, theItem, theType, &theFlags );
 222                     if (result == noErr)
 223                     {
 224                         Size dataSize;
 225                         Ptr theData;
 226
 227                         GetFlavorDataSize( (DragReference)m_currentDrag, theItem, theType, &dataSize );
 228                         if (theType == kScrapFlavorTypeText)
 229                         {
 230                             // this increment is only valid for allocating:
 231                             // on the next GetFlavorData call it is reset again to the original value
 232                             dataSize++;
 233                         }
 234                         else if (theType == kScrapFlavorTypeUnicode)
 235                         {
 236                             // this increment is only valid for allocating:
 237                             // on the next GetFlavorData call it is reset again to the original value
 238                             dataSize++;
 239                             dataSize++;
 240                         }
 241
 242                         if (dataSize > 0)
 243                             theData = new char[dataSize];
 244                         else
 245                             theData = NULL;
 246
 247                         GetFlavorData( (DragReference)m_currentDrag, theItem, theType, (void*)theData, &dataSize, 0L );
 248                         switch (theType)
 249                         {
 250                         case kScrapFlavorTypeText:
 251                             theData[dataSize] = 0;
 252                             m_dataObject->SetData( wxDataFormat(wxDF_TEXT), dataSize, theData );
 253                             break;
 254
 255 #if wxUSE_UNICODE
 256                         case kScrapFlavorTypeUnicode:
 257                             theData[dataSize + 0] =
 258                             theData[dataSize + 1] = 0;
 259                             m_dataObject->SetData( wxDataFormat(wxDF_UNICODETEXT), dataSize, theData );
 260                             break;
 261 #endif
 262
 263                         case kDragFlavorTypeHFS:
 264                             if (theData != NULL)
 265                             {
 266                                 HFSFlavor* theFile = (HFSFlavor*)theData;
 267                                 wxString name = wxMacFSSpec2MacFilename( &theFile->fileSpec );
 268
 269                                 if (!name.empty())
 270                                     filenamesPassed += name + wxT("\n");
 271                             }
 272                             break;
 273
 274                         default:
 275                             m_dataObject->SetData( format, dataSize, theData );
 276                             break;
 277                         }
 278
 279                         delete [] theData;
 280                     }
 281                     break;
 282                 }
 283             }
 284         }
 285
 286         if (filenamesPassed.length() > 0)
 287         {
 288             wxCharBuffer buf = filenamesPassed.fn_str();
 289             m_dataObject->SetData( wxDataFormat(wxDF_FILENAME), strlen( buf ), (const char*)buf );
 290         }
 291     }
 292
 293     return true;
 294 }
 295
 296 //-------------------------------------------------------------------------
 297 // wxDropSource
 298 //-------------------------------------------------------------------------
 299
 300 //-----------------------------------------------------------------------------
 301 // drag request
 302
 303 wxDropSource::wxDropSource(wxWindow *win,
 304                            const wxCursor &cursorCopy,
 305                            const wxCursor &cursorMove,
 306                            const wxCursor &cursorStop)
 307             : wxDropSourceBase(cursorCopy, cursorMove, cursorStop)
 308 {
 309     wxMacEnsureTrackingHandlersInstalled();
 310
 311     m_window = win;
 312 }
 313
 314 wxDropSource::wxDropSource(wxDataObject& data,
 315                            wxWindow *win,
 316                            const wxCursor &cursorCopy,
 317                            const wxCursor &cursorMove,
 318                            const wxCursor &cursorStop)
 319             : wxDropSourceBase(cursorCopy, cursorMove, cursorStop)
 320 {
 321     wxMacEnsureTrackingHandlersInstalled();
 322
 323     SetData( data );
 324     m_window = win;
 325 }
 326
 327 wxDropSource::~wxDropSource()
 328 {
 329 }
 330
 331 wxDragResult wxDropSource::DoDragDrop(int flags)
 332 {
 333     wxASSERT_MSG( m_data, wxT("Drop source: no data") );
 334
 335     if ((m_data == NULL) || (m_data->GetFormatCount() == 0))
 336         return (wxDragResult)wxDragNone;
 337
 338     DragReference theDrag;
 339     RgnHandle dragRegion;
 340
 341     if (NewDrag( &theDrag ) != noErr)
 342         return wxDragNone;
 343
 344     // add data to drag
 345     size_t formatCount = m_data->GetFormatCount();
 346     wxDataFormat *formats = new wxDataFormat[formatCount];
 347     m_data->GetAllFormats( formats );
 348     ItemReference theItem = 1;
 349
 350     for ( size_t i = 0; i < formatCount; ++i )
 351     {
 352         size_t dataSize = m_data->GetDataSize( formats[i] );
 353         Ptr dataPtr = new char[dataSize];
 354         m_data->GetDataHere( formats[i], dataPtr );
 355         OSType type = formats[i].GetFormatId();
 356         if ( type == 'TEXT' || type == 'utxt' )
 357         {
 358             if ( dataSize > 0 )
 359                 dataSize--;
 360             dataPtr[ dataSize ] = 0;
 361             if ( type == 'utxt' )
 362             {
 363                 if ( dataSize > 0 )
 364                     dataSize--;
 365                 dataPtr[ dataSize ] = 0;
 366             }
 367
 368             AddDragItemFlavor( theDrag, theItem, type, dataPtr, dataSize, 0 );
 369         }
 370         else if (type == kDragFlavorTypeHFS )
 371         {
 372             HFSFlavor  theFlavor;
 373             OSErr err = noErr;
 374             CInfoPBRec cat;
 375
 376             wxMacFilename2FSSpec( wxString( dataPtr, *wxConvCurrent ), &theFlavor.fileSpec );
 377
 378             memset( &cat, 0, sizeof(cat) );
 379             cat.hFileInfo.ioNamePtr = theFlavor.fileSpec.name;
 380             cat.hFileInfo.ioVRefNum = theFlavor.fileSpec.vRefNum;
 381             cat.hFileInfo.ioDirID = theFlavor.fileSpec.parID;
 382             cat.hFileInfo.ioFDirIndex = 0;
 383             err = PBGetCatInfoSync( &cat );
 384             if (err == noErr)
 385             {
 386                 theFlavor.fdFlags = cat.hFileInfo.ioFlFndrInfo.fdFlags;
 387                 if (theFlavor.fileSpec.parID == fsRtParID)
 388                 {
 389                     theFlavor.fileCreator = 'MACS';
 390                     theFlavor.fileType = 'disk';
 391                 }
 392                 else if ((cat.hFileInfo.ioFlAttrib & ioDirMask) != 0)
 393                 {
 394                     theFlavor.fileCreator = 'MACS';
 395                     theFlavor.fileType = 'fold';
 396                 }
 397                 else
 398                 {
 399                     theFlavor.fileCreator = cat.hFileInfo.ioFlFndrInfo.fdCreator;
 400                     theFlavor.fileType = cat.hFileInfo.ioFlFndrInfo.fdType;
 401                 }
 402
 403                 AddDragItemFlavor( theDrag, theItem, type, &theFlavor, sizeof(theFlavor), 0 );
 404             }
 405         }
 406         else
 407         {
 408             AddDragItemFlavor( theDrag, theItem, type, dataPtr, dataSize, 0 );
 409         }
 410
 411         delete [] dataPtr;
 412     }
 413
 414     delete [] formats;
 415
 416     dragRegion = NewRgn();
 417     RgnHandle tempRgn = NewRgn();
 418
 419     EventRecord* ev = NULL;
 420
 421 #if !TARGET_CARBON // TODO
 422     ev = (EventRecord*) wxTheApp->MacGetCurrentEvent();
 423 #else
 424     EventRecord rec;
 425     ev = &rec;
 426     wxMacConvertEventToRecord( (EventRef) wxTheApp->MacGetCurrentEvent(), &rec );
 427 #endif
 428
 429     const short dragRegionOuterBoundary = 10;
 430     const short dragRegionInnerBoundary = 9;
 431
 432     SetRectRgn(
 433         dragRegion,
 434         ev->where.h - dragRegionOuterBoundary,
 435         ev->where.v  - dragRegionOuterBoundary,
 436         ev->where.h + dragRegionOuterBoundary,
 437         ev->where.v + dragRegionOuterBoundary );
 438
 439     SetRectRgn(
 440         tempRgn,
 441         ev->where.h - dragRegionInnerBoundary,
 442         ev->where.v - dragRegionInnerBoundary,
 443         ev->where.h + dragRegionInnerBoundary,
 444         ev->where.v + dragRegionInnerBoundary );
 445
 446     DiffRgn( dragRegion, tempRgn, dragRegion );
 447     DisposeRgn( tempRgn );
 448
 449     // TODO: work with promises in order to return data
 450     // only when drag was successfully completed
 451
 452     gTrackingGlobals.m_currentSource = this;
 453     TrackDrag( theDrag, ev, dragRegion );
 454     DisposeRgn( dragRegion );
 455     DisposeDrag( theDrag );
 456     gTrackingGlobals.m_currentSource = NULL;
 457
 458     bool optionDown = GetCurrentKeyModifiers() & optionKey;
 459     wxDragResult dndresult = wxDragCopy;
 460     if ( flags != wxDrag_CopyOnly )
 461         // on mac the option key is always the indication for copy
 462         dndresult = optionDown ? wxDragCopy : wxDragMove;
 463
 464     return dndresult;
 465 }
 466
 467 bool wxDropSource::MacInstallDefaultCursor(wxDragResult effect)
 468 {
 469     const wxCursor& cursor = GetCursor(effect);
 470     bool result = cursor.Ok();
 471
 472     if ( result )
 473         cursor.MacInstall();
 474
 475     return result;
 476 }
 477
 478 bool gTrackingGlobalsInstalled = false;
 479
 480 // passing the globals via refcon is not needed by the CFM and later architectures anymore
 481 // but I'll leave it in there, just in case...
 482
 483 pascal OSErr wxMacWindowDragTrackingHandler(
 484     DragTrackingMessage theMessage, WindowPtr theWindow,
 485     void *handlerRefCon, DragReference theDrag );
 486 pascal OSErr wxMacWindowDragReceiveHandler(
 487     WindowPtr theWindow, void *handlerRefCon,
 488     DragReference theDrag );
 489
 490 void wxMacEnsureTrackingHandlersInstalled()
 491 {
 492     if ( !gTrackingGlobalsInstalled )
 493     {
 494         OSStatus err;
 495
 496         err = InstallTrackingHandler( NewDragTrackingHandlerUPP(wxMacWindowDragTrackingHandler), 0L, &gTrackingGlobals );
 497         verify_noerr( err );
 498
 499         err = InstallReceiveHandler( NewDragReceiveHandlerUPP(wxMacWindowDragReceiveHandler), 0L, &gTrackingGlobals );
 500         verify_noerr( err );
 501
 502         gTrackingGlobalsInstalled = true;
 503     }
 504 }
 505
 506 pascal OSErr wxMacWindowDragTrackingHandler(
 507     DragTrackingMessage theMessage, WindowPtr theWindow,
 508     void *handlerRefCon, DragReference theDrag )
 509 {
 510     MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon;
 511
 512     Point mouse, localMouse;
 513     DragAttributes attributes;
 514
 515     GetDragAttributes( theDrag, &attributes );
 516
 517     wxTopLevelWindowMac* toplevel = wxFindWinFromMacWindow( theWindow );
 518
 519     bool optionDown = GetCurrentKeyModifiers() & optionKey;
 520     wxDragResult result = optionDown ? wxDragCopy : wxDragMove;
 521
 522     switch (theMessage)
 523     {
 524         case kDragTrackingEnterHandler:
 525         case kDragTrackingLeaveHandler:
 526             break;
 527
 528         case kDragTrackingEnterWindow:
 529             if (trackingGlobals != NULL)
 530             {
 531                 trackingGlobals->m_currentTargetWindow = NULL;
 532                 trackingGlobals->m_currentTarget = NULL;
 533             }
 534             break;
 535
 536         case kDragTrackingInWindow:
 537             if (trackingGlobals == NULL)
 538                 break;
 539             if (toplevel == NULL)
 540                 break;
 541
 542             GetDragMouse( theDrag, &mouse, 0L );
 543             localMouse = mouse;
 544             GlobalToLocal( &localMouse );
 545
 546             {
 547                 wxWindow *win = NULL;
 548                 ControlPartCode controlPart;
 549                 ControlRef control = wxMacFindControlUnderMouse(
 550                     toplevel, localMouse, theWindow, &controlPart );
 551                 if ( control )
 552                     win = wxFindControlFromMacControl( control );
 553                 else
 554                     win = toplevel;
 555
 556                 int localx, localy;
 557                 localx = localMouse.h;
 558                 localy = localMouse.v;
 559
 560                 if ( win )
 561                     win->MacRootWindowToWindow( &localx, &localy );
 562                 if ( win != trackingGlobals->m_currentTargetWindow )
 563                 {
 564                     if ( trackingGlobals->m_currentTargetWindow )
 565                     {
 566                         // this window is left
 567                         if ( trackingGlobals->m_currentTarget )
 568                         {
 569                             HideDragHilite( theDrag );
 570                             trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag );
 571                             trackingGlobals->m_currentTarget->OnLeave();
 572                             trackingGlobals->m_currentTarget = NULL;
 573                             trackingGlobals->m_currentTargetWindow = NULL;
 574                         }
 575                     }
 576
 577                     if ( win )
 578                     {
 579                         // this window is entered
 580                         trackingGlobals->m_currentTargetWindow = win;
 581                         trackingGlobals->m_currentTarget = win->GetDropTarget();
 582                         {
 583                             if ( trackingGlobals->m_currentTarget )
 584                             {
 585                                 trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag );
 586                                 result = trackingGlobals->m_currentTarget->OnEnter( localx, localy, result );
 587                             }
 588
 589                             if ( result != wxDragNone )
 590                             {
 591                                 int x, y;
 592
 593                                 x = y = 0;
 594                                 win->MacWindowToRootWindow( &x, &y );
 595                                 RgnHandle hiliteRgn = NewRgn();
 596                                 Rect r = { y, x, y + win->GetSize().y, x + win->GetSize().x };
 597                                 RectRgn( hiliteRgn, &r );
 598                                 ShowDragHilite( theDrag, hiliteRgn, true );
 599                                 DisposeRgn( hiliteRgn );
 600                             }
 601                         }
 602                     }
 603                 }
 604                 else
 605                 {
 606                     if ( trackingGlobals->m_currentTarget )
 607                     {
 608                         trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag );
 609                         trackingGlobals->m_currentTarget->OnDragOver( localx, localy, result );
 610                     }
 611                 }
 612
 613                 // set cursor for OnEnter and OnDragOver
 614                 if ( trackingGlobals->m_currentSource && !trackingGlobals->m_currentSource->GiveFeedback( result ) )
 615                 {
 616                   if ( !trackingGlobals->m_currentSource->MacInstallDefaultCursor( result ) )
 617                   {
 618                       int cursorID = wxCURSOR_NONE;
 619
 620                       switch (result)
 621                       {
 622                           case wxDragCopy:
 623                               cursorID = wxCURSOR_COPY_ARROW;
 624                               break;
 625
 626                           case wxDragMove:
 627                               cursorID = wxCURSOR_ARROW;
 628                               break;
 629
 630                           case wxDragNone:
 631                               cursorID = wxCURSOR_NO_ENTRY;
 632                               break;
 633
 634                           case wxDragError:
 635                           case wxDragLink:
 636                           case wxDragCancel:
 637                           default:
 638                               // put these here to make gcc happy
 639                               ;
 640                       }
 641
 642                       if (cursorID != wxCURSOR_NONE)
 643                       {
 644                           wxCursor cursor( cursorID );
 645                           cursor.MacInstall();
 646                       }
 647                    }
 648                 }
 649             }
 650             break;
 651
 652         case kDragTrackingLeaveWindow:
 653             if (trackingGlobals == NULL)
 654                 break;
 655
 656             if (trackingGlobals->m_currentTarget)
 657             {
 658                 trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag );
 659                 trackingGlobals->m_currentTarget->OnLeave();
 660                 HideDragHilite( theDrag );
 661                 trackingGlobals->m_currentTarget = NULL;
 662             }
 663             trackingGlobals->m_currentTargetWindow = NULL;
 664             break;
 665
 666         default:
 667             break;
 668     }
 669
 670     return noErr;
 671 }
 672
 673 pascal OSErr wxMacWindowDragReceiveHandler(
 674     WindowPtr theWindow,
 675     void *handlerRefCon,
 676     DragReference theDrag)
 677 {
 678     MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*)handlerRefCon;
 679     if ( trackingGlobals->m_currentTarget )
 680     {
 681         Point mouse, localMouse;
 682         int localx, localy;
 683
 684         trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag );
 685         GetDragMouse( theDrag, &mouse, 0L );
 686         localMouse = mouse;
 687         GlobalToLocal( &localMouse );
 688         localx = localMouse.h;
 689         localy = localMouse.v;
 690
 691         // TODO : should we use client coordinates?
 692         if ( trackingGlobals->m_currentTargetWindow )
 693             trackingGlobals->m_currentTargetWindow->MacRootWindowToWindow( &localx, &localy );
 694         if ( trackingGlobals->m_currentTarget->OnDrop( localx, localy ) )
 695         {
 696             bool optionDown = GetCurrentKeyModifiers() & optionKey;
 697             wxDragResult result = optionDown ? wxDragCopy : wxDragMove;
 698             trackingGlobals->m_currentTarget->OnData( localx, localy, result );
 699         }
 700     }
 701
 702     return noErr;
 703 }
 704
 705 #endif