src/mac/carbon/dnd.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #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 #ifndef __DARWIN__
  24     #include <Scrap.h>
  25 #endif
  26
  27
  28 // ----------------------------------------------------------------------------
  29 // globals
  30 // ----------------------------------------------------------------------------
  31
  32 typedef struct
  33 {
  34     wxWindow *m_currentTargetWindow;
  35     wxDropTarget *m_currentTarget;
  36     wxDropSource *m_currentSource;
  37 }
  38 MacTrackingGlobals;
  39
  40 MacTrackingGlobals gTrackingGlobals;
  41
  42 void wxMacEnsureTrackingHandlersInstalled();
  43
  44 //----------------------------------------------------------------------------
  45 // wxDropTarget
  46 //----------------------------------------------------------------------------
  47
  48 wxDropTarget::wxDropTarget( wxDataObject *data )
  49             : wxDropTargetBase( data )
  50 {
  51     wxMacEnsureTrackingHandlersInstalled();
  52 }
  53
  54 wxDragResult wxDropTarget::OnDragOver(
  55     wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
  56     wxDragResult def )
  57 {
  58     return CurrentDragHasSupportedFormat() ? def : wxDragNone;
  59 }
  60
  61 bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
  62 {
  63     if (m_dataObject == NULL)
  64         return false;
  65
  66     return CurrentDragHasSupportedFormat();
  67 }
  68
  69 wxDragResult wxDropTarget::OnData(
  70     wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
  71     wxDragResult def )
  72 {
  73     if (m_dataObject == NULL)
  74         return wxDragNone;
  75
  76     if (!CurrentDragHasSupportedFormat())
  77         return wxDragNone;
  78
  79     return GetData() ? def : wxDragNone;
  80 }
  81
  82 bool wxDropTarget::CurrentDragHasSupportedFormat()
  83 {
  84     bool supported = false;
  85
  86     if ( gTrackingGlobals.m_currentSource != NULL )
  87     {
  88         wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject();
  89
  90         if ( data )
  91         {
  92             size_t formatcount = data->GetFormatCount();
  93             wxDataFormat *array = new wxDataFormat[formatcount];
  94             data->GetAllFormats( array );
  95             for (size_t i = 0; !supported && i < formatcount; i++)
  96             {
  97                 wxDataFormat format = array[i];
  98                 if ( m_dataObject->IsSupported( format ) )
  99                 {
 100                     supported = true;
 101                     break;
 102                 }
 103             }
 104
 105             delete [] array;
 106         }
 107     }
 108
 109     if ( !supported )
 110     {
 111         UInt16 items;
 112         OSErr result;
 113         ItemReference theItem;
 114         FlavorType theType;
 115         UInt16 flavors = 0;
 116
 117         CountDragItems( (DragReference)m_currentDrag, &items );
 118         for (UInt16 index = 1; index <= items && !supported; ++index)
 119         {
 120             flavors = 0;
 121             GetDragItemReferenceNumber( (DragReference)m_currentDrag, index, &theItem );
 122             CountDragItemFlavors( (DragReference)m_currentDrag, theItem, &flavors );
 123
 124             for ( UInt16 flavor = 1; flavor <= flavors; ++flavor )
 125             {
 126                 result = GetFlavorType( (DragReference)m_currentDrag, theItem, flavor, &theType );
 127                 if ( m_dataObject->IsSupportedFormat( wxDataFormat( theType ) ) )
 128                 {
 129                     supported = true;
 130                     break;
 131                 }
 132             }
 133         }
 134     }
 135
 136     return supported;
 137 }
 138
 139 bool wxDropTarget::GetData()
 140 {
 141     if (m_dataObject == NULL)
 142         return false;
 143
 144     if ( !CurrentDragHasSupportedFormat() )
 145         return false;
 146
 147     bool transferred = false;
 148     if ( gTrackingGlobals.m_currentSource != NULL )
 149     {
 150         wxDataObject* data = gTrackingGlobals.m_currentSource->GetDataObject();
 151
 152         if (data != NULL)
 153         {
 154             size_t formatcount = data->GetFormatCount();
 155             wxDataFormat *array = new wxDataFormat[formatcount];
 156             data->GetAllFormats( array );
 157             for (size_t i = 0; !transferred && i < formatcount; i++)
 158             {
 159                 wxDataFormat format = array[i];
 160                 if ( m_dataObject->IsSupported( format ) )
 161                 {
 162                     int size = data->GetDataSize( format );
 163                     transferred = true;
 164
 165                     if (size == 0)
 166                     {
 167                         m_dataObject->SetData( format, 0, 0 );
 168                     }
 169                     else
 170                     {
 171                         char *d = new char[size];
 172                         data->GetDataHere( format, (void*)d );
 173                         m_dataObject->SetData( format, size, d );
 174                         delete [] d;
 175                     }
 176                 }
 177             }
 178
 179             delete [] array;
 180         }
 181     }
 182
 183     if ( !transferred )
 184     {
 185         UInt16 items;
 186         OSErr result;
 187         ItemReference theItem;
 188         FlavorType theType;
 189         FlavorFlags theFlags;
 190         UInt16 flavors;
 191         bool firstFileAdded = false;
 192
 193         CountDragItems( (DragReference)m_currentDrag, &items );
 194         for (UInt16 index = 1; index <= items; ++index)
 195         {
 196             flavors = 0;
 197             GetDragItemReferenceNumber( (DragReference)m_currentDrag, index, &theItem );
 198             CountDragItemFlavors( (DragReference)m_currentDrag, theItem, &flavors );
 199             wxDataFormat preferredFormat = m_dataObject->GetPreferredFormat( wxDataObject::Set );
 200             bool hasPreferredFormat = false;
 201
 202             for ( UInt16 flavor = 1; flavor <= flavors; ++flavor )
 203             {
 204                 result = GetFlavorType( (DragReference)m_currentDrag, theItem, flavor, &theType );
 205                 wxDataFormat format( theType );
 206                 if ( preferredFormat == format )
 207                 {
 208                     hasPreferredFormat = true;
 209                     break;
 210                 }
 211             }
 212
 213             for ( UInt16 flavor = 1; flavor <= flavors; ++flavor )
 214             {
 215                 result = GetFlavorType( (DragReference)m_currentDrag, theItem, flavor, &theType );
 216                 wxDataFormat format( theType );
 217                 if ( (hasPreferredFormat && format == preferredFormat)
 218                     || (!hasPreferredFormat && m_dataObject->IsSupportedFormat( format )))
 219                 {
 220                     result = GetFlavorFlags( (DragReference)m_currentDrag, theItem, theType, &theFlags );
 221                     if (result == noErr)
 222                     {
 223                         Size dataSize;
 224                         Ptr theData;
 225
 226                         GetFlavorDataSize( (DragReference)m_currentDrag, theItem, theType, &dataSize );
 227                         if ( theType == kScrapFlavorTypeText )
 228                         {
 229                             // this increment is only valid for allocating:
 230                             // on the next GetFlavorData call it is reset again to the original value
 231                             dataSize++;
 232                         }
 233                         else if ( theType == kScrapFlavorTypeUnicode )
 234                         {
 235                             // this increment is only valid for allocating:
 236                             // on the next GetFlavorData call it is reset again to the original value
 237                             dataSize++;
 238                             dataSize++;
 239                         }
 240
 241                         if (dataSize > 0)
 242                             theData = new char[dataSize];
 243                         else
 244                             theData = NULL;
 245
 246                         GetFlavorData( (DragReference)m_currentDrag, theItem, theType, (void*) theData, &dataSize, 0L );
 247                         switch (theType)
 248                         {
 249                         case kScrapFlavorTypeText:
 250                             theData[dataSize] = 0;
 251                             m_dataObject->SetData( wxDataFormat(wxDF_TEXT), dataSize, theData );
 252                             break;
 253
 254 #if wxUSE_UNICODE
 255                         case kScrapFlavorTypeUnicode:
 256                             theData[dataSize + 0] =
 257                             theData[dataSize + 1] = 0;
 258                             m_dataObject->SetData( wxDataFormat(wxDF_UNICODETEXT), dataSize, theData );
 259                             break;
 260 #endif
 261
 262                         case kDragFlavorTypeHFS:
 263                             {
 264                                 wxFileDataObject *fdo = dynamic_cast<wxFileDataObject*>(m_dataObject);
 265                                 wxASSERT( fdo != NULL );
 266
 267                                 if ((theData != NULL) && (fdo != NULL))
 268                                 {
 269                                     HFSFlavor* theFile = (HFSFlavor*) theData;
 270                                     wxString name = wxMacFSSpec2MacFilename( &theFile->fileSpec );
 271
 272                                     if ( !firstFileAdded )
 273                                     {
 274                                         // reset file list
 275                                         fdo->SetData( 0, "" );
 276                                         firstFileAdded = true;
 277                                     }
 278
 279                                     if (!name.IsEmpty())
 280                                         fdo->AddFile( name );
 281                                 }
 282                             }
 283                             break;
 284
 285                         default:
 286                             m_dataObject->SetData( format, dataSize, theData );
 287                             break;
 288                         }
 289
 290                         delete [] theData;
 291                     }
 292                     break;
 293                 }
 294             }
 295         }
 296     }
 297
 298     return true;
 299 }
 300
 301 //-------------------------------------------------------------------------
 302 // wxDropSource
 303 //-------------------------------------------------------------------------
 304
 305 //-----------------------------------------------------------------------------
 306 // drag request
 307
 308 wxDropSource::wxDropSource(wxWindow *win,
 309                            const wxCursor &cursorCopy,
 310                            const wxCursor &cursorMove,
 311                            const wxCursor &cursorStop)
 312             : wxDropSourceBase(cursorCopy, cursorMove, cursorStop)
 313 {
 314     wxMacEnsureTrackingHandlersInstalled();
 315
 316     m_window = win;
 317 }
 318
 319 wxDropSource::wxDropSource(wxDataObject& data,
 320                            wxWindow *win,
 321                            const wxCursor &cursorCopy,
 322                            const wxCursor &cursorMove,
 323                            const wxCursor &cursorStop)
 324             : wxDropSourceBase(cursorCopy, cursorMove, cursorStop)
 325 {
 326     wxMacEnsureTrackingHandlersInstalled();
 327
 328     SetData( data );
 329     m_window = win;
 330 }
 331
 332 wxDropSource::~wxDropSource()
 333 {
 334 }
 335
 336 wxDragResult wxDropSource::DoDragDrop(int flags)
 337 {
 338     wxASSERT_MSG( m_data, wxT("Drop source: no data") );
 339
 340     if (!m_data)
 341         return (wxDragResult) wxDragNone;
 342     if (m_data->GetFormatCount() == 0)
 343         return (wxDragResult) wxDragNone;
 344
 345     OSStatus result;
 346     DragReference theDrag;
 347     RgnHandle dragRegion;
 348     if ((result = NewDrag(&theDrag)) != noErr)
 349         return wxDragNone;
 350
 351     // add data to drag
 352     size_t formatCount = m_data->GetFormatCount();
 353     wxDataFormat *formats = new wxDataFormat[formatCount];
 354     m_data->GetAllFormats( formats );
 355     ItemReference theItem = 1;
 356
 357     for ( size_t i = 0; i < formatCount; ++i )
 358     {
 359         size_t dataSize = m_data->GetDataSize( formats[i] );
 360         Ptr dataPtr = new char[dataSize];
 361         m_data->GetDataHere( formats[i], dataPtr );
 362         OSType type = formats[i].GetFormatId();
 363         if ( type == 'TEXT' || type == 'utxt' )
 364         {
 365             if ( dataSize > 0 )
 366                 dataSize--;
 367             dataPtr[ dataSize ] = 0;
 368             if ( type == 'utxt' )
 369             {
 370                 if ( dataSize > 0 )
 371                     dataSize--;
 372                 dataPtr[ dataSize ] = 0;
 373             }
 374
 375             AddDragItemFlavor( theDrag, theItem, type, dataPtr, dataSize, 0 );
 376         }
 377         else if (type == kDragFlavorTypeHFS )
 378         {
 379             HFSFlavor  theFlavor;
 380             OSErr err = noErr;
 381             CInfoPBRec cat;
 382
 383             wxMacFilename2FSSpec( wxString( dataPtr, *wxConvCurrent ), &theFlavor.fileSpec );
 384
 385             memset( &cat, 0, sizeof(cat) );
 386             cat.hFileInfo.ioNamePtr = theFlavor.fileSpec.name;
 387             cat.hFileInfo.ioVRefNum = theFlavor.fileSpec.vRefNum;
 388             cat.hFileInfo.ioDirID = theFlavor.fileSpec.parID;
 389             cat.hFileInfo.ioFDirIndex = 0;
 390             err = PBGetCatInfoSync( &cat );
 391             if (err == noErr)
 392             {
 393                 theFlavor.fdFlags = cat.hFileInfo.ioFlFndrInfo.fdFlags;
 394                 if (theFlavor.fileSpec.parID == fsRtParID)
 395                 {
 396                     theFlavor.fileCreator = 'MACS';
 397                     theFlavor.fileType = 'disk';
 398                 }
 399                 else if ((cat.hFileInfo.ioFlAttrib & ioDirMask) != 0)
 400                 {
 401                     theFlavor.fileCreator = 'MACS';
 402                     theFlavor.fileType = 'fold';
 403                 }
 404                 else
 405                 {
 406                     theFlavor.fileCreator = cat.hFileInfo.ioFlFndrInfo.fdCreator;
 407                     theFlavor.fileType = cat.hFileInfo.ioFlFndrInfo.fdType;
 408                 }
 409
 410                 AddDragItemFlavor( theDrag, theItem, type, &theFlavor, sizeof(theFlavor), 0 );
 411             }
 412         }
 413         else
 414         {
 415             AddDragItemFlavor( theDrag, theItem, type, dataPtr, dataSize, 0 );
 416         }
 417
 418         delete [] dataPtr;
 419     }
 420
 421     delete [] formats;
 422
 423     dragRegion = NewRgn();
 424     RgnHandle tempRgn = NewRgn();
 425
 426     EventRecord* ev = NULL;
 427
 428 #if !TARGET_CARBON // TODO
 429     ev = (EventRecord*) wxTheApp->MacGetCurrentEvent();
 430 #else
 431     EventRecord rec;
 432     ev = &rec;
 433     wxMacConvertEventToRecord( (EventRef) wxTheApp->MacGetCurrentEvent(), &rec );
 434 #endif
 435
 436     const short dragRegionOuterBoundary = 10;
 437     const short dragRegionInnerBoundary = 9;
 438
 439     SetRectRgn(
 440         dragRegion,
 441         ev->where.h - dragRegionOuterBoundary,
 442         ev->where.v  - dragRegionOuterBoundary,
 443         ev->where.h + dragRegionOuterBoundary,
 444         ev->where.v + dragRegionOuterBoundary );
 445
 446     SetRectRgn(
 447         tempRgn,
 448         ev->where.h - dragRegionInnerBoundary,
 449         ev->where.v - dragRegionInnerBoundary,
 450         ev->where.h + dragRegionInnerBoundary,
 451         ev->where.v + dragRegionInnerBoundary );
 452
 453     DiffRgn( dragRegion, tempRgn, dragRegion );
 454     DisposeRgn( tempRgn );
 455
 456     // TODO: work with promises in order to return data
 457     // only when drag was successfully completed
 458
 459     gTrackingGlobals.m_currentSource = this;
 460     result = TrackDrag( theDrag, ev, dragRegion );
 461     DisposeRgn( dragRegion );
 462     DisposeDrag( theDrag );
 463     gTrackingGlobals.m_currentSource = NULL;
 464
 465     bool optionDown = GetCurrentKeyModifiers() & optionKey;
 466     wxDragResult dndresult = wxDragCopy;
 467     if ( flags != wxDrag_CopyOnly )
 468         // on mac the option key is always the indication for copy
 469         dndresult = optionDown ? wxDragCopy : wxDragMove;
 470
 471     return dndresult;
 472 }
 473
 474 bool wxDropSource::MacInstallDefaultCursor(wxDragResult effect)
 475 {
 476     const wxCursor& cursor = GetCursor(effect);
 477     bool result = cursor.Ok();
 478
 479     if ( result )
 480         cursor.MacInstall();
 481
 482     return result;
 483 }
 484
 485 bool gTrackingGlobalsInstalled = false;
 486
 487 // passing the globals via refcon is not needed by the CFM and later architectures anymore
 488 // but I'll leave it in there, just in case...
 489
 490 pascal OSErr wxMacWindowDragTrackingHandler(
 491     DragTrackingMessage theMessage, WindowPtr theWindow,
 492     void *handlerRefCon, DragReference theDrag );
 493 pascal OSErr wxMacWindowDragReceiveHandler(
 494     WindowPtr theWindow, void *handlerRefCon,
 495     DragReference theDrag );
 496
 497 void wxMacEnsureTrackingHandlersInstalled()
 498 {
 499     if ( !gTrackingGlobalsInstalled )
 500     {
 501         OSStatus err;
 502
 503         err = InstallTrackingHandler( NewDragTrackingHandlerUPP(wxMacWindowDragTrackingHandler), 0L, &gTrackingGlobals );
 504         verify_noerr( err );
 505
 506         err = InstallReceiveHandler( NewDragReceiveHandlerUPP(wxMacWindowDragReceiveHandler), 0L, &gTrackingGlobals );
 507         verify_noerr( err );
 508
 509         gTrackingGlobalsInstalled = true;
 510     }
 511 }
 512
 513 pascal OSErr wxMacWindowDragTrackingHandler(
 514     DragTrackingMessage theMessage, WindowPtr theWindow,
 515     void *handlerRefCon, DragReference theDrag )
 516 {
 517     MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*) handlerRefCon;
 518
 519     Point mouse, localMouse;
 520     DragAttributes attributes;
 521
 522     GetDragAttributes( theDrag, &attributes );
 523
 524     wxTopLevelWindowMac* toplevel = wxFindWinFromMacWindow( theWindow );
 525
 526     bool optionDown = GetCurrentKeyModifiers() & optionKey;
 527     wxDragResult result = optionDown ? wxDragCopy : wxDragMove;
 528
 529     switch (theMessage)
 530     {
 531         case kDragTrackingEnterHandler:
 532         case kDragTrackingLeaveHandler:
 533             break;
 534
 535         case kDragTrackingEnterWindow:
 536             if (trackingGlobals != NULL)
 537             {
 538                 trackingGlobals->m_currentTargetWindow = NULL;
 539                 trackingGlobals->m_currentTarget = NULL;
 540             }
 541             break;
 542
 543         case kDragTrackingInWindow:
 544             if (trackingGlobals == NULL)
 545                 break;
 546             if (toplevel == NULL)
 547                 break;
 548
 549             GetDragMouse( theDrag, &mouse, 0L );
 550             localMouse = mouse;
 551             GlobalToLocal( &localMouse );
 552
 553             {
 554                 wxWindow *win = NULL;
 555                 ControlPartCode controlPart;
 556                 ControlRef control = wxMacFindControlUnderMouse(
 557                     toplevel, localMouse, theWindow, &controlPart );
 558                 if ( control )
 559                     win = wxFindControlFromMacControl( control );
 560                 else
 561                     win = toplevel;
 562
 563                 int localx, localy;
 564                 localx = localMouse.h;
 565                 localy = localMouse.v;
 566
 567                 if ( win )
 568                     win->MacRootWindowToWindow( &localx, &localy );
 569                 if ( win != trackingGlobals->m_currentTargetWindow )
 570                 {
 571                     if ( trackingGlobals->m_currentTargetWindow )
 572                     {
 573                         // this window is left
 574                         if ( trackingGlobals->m_currentTarget )
 575                         {
 576                             HideDragHilite( theDrag );
 577                             trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag );
 578                             trackingGlobals->m_currentTarget->OnLeave();
 579                             trackingGlobals->m_currentTarget = NULL;
 580                             trackingGlobals->m_currentTargetWindow = NULL;
 581                         }
 582                     }
 583
 584                     if ( win )
 585                     {
 586                         // this window is entered
 587                         trackingGlobals->m_currentTargetWindow = win;
 588                         trackingGlobals->m_currentTarget = win->GetDropTarget();
 589                         {
 590                             if ( trackingGlobals->m_currentTarget )
 591                             {
 592                                 trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag );
 593                                 result = trackingGlobals->m_currentTarget->OnEnter( localx, localy, result );
 594                             }
 595
 596                             if ( result != wxDragNone )
 597                             {
 598                                 int x, y;
 599
 600                                 x = y = 0;
 601                                 win->MacWindowToRootWindow( &x, &y );
 602                                 RgnHandle hiliteRgn = NewRgn();
 603                                 Rect r = { y, x, y + win->GetSize().y, x + win->GetSize().x };
 604                                 RectRgn( hiliteRgn, &r );
 605                                 ShowDragHilite( theDrag, hiliteRgn, true );
 606                                 DisposeRgn( hiliteRgn );
 607                             }
 608                         }
 609                     }
 610                 }
 611                 else
 612                 {
 613                     if ( trackingGlobals->m_currentTarget )
 614                     {
 615                         trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag );
 616                         trackingGlobals->m_currentTarget->OnDragOver( localx, localy, result );
 617                     }
 618                 }
 619
 620                 // set cursor for OnEnter and OnDragOver
 621                 if ( trackingGlobals->m_currentSource && !trackingGlobals->m_currentSource->GiveFeedback( result ) )
 622                 {
 623                   if ( !trackingGlobals->m_currentSource->MacInstallDefaultCursor( result ) )
 624                   {
 625                       switch ( result )
 626                       {
 627                           case wxDragCopy:
 628                               {
 629                                   wxCursor cursor(wxCURSOR_COPY_ARROW);
 630                                   cursor.MacInstall();
 631                               }
 632                               break;
 633
 634                           case wxDragMove:
 635                               {
 636                                   wxCursor cursor(wxCURSOR_ARROW);
 637                                   cursor.MacInstall();
 638                               }
 639                               break;
 640
 641                           case wxDragNone:
 642                               {
 643                                   wxCursor cursor(wxCURSOR_NO_ENTRY);
 644                                   cursor.MacInstall();
 645                               }
 646                               break;
 647
 648                           case wxDragError:
 649                           case wxDragLink:
 650                           case wxDragCancel:
 651                           default:
 652                               // put these here to make gcc happy
 653                               ;
 654                       }
 655                    }
 656                 }
 657             }
 658             break;
 659
 660         case kDragTrackingLeaveWindow:
 661             if (trackingGlobals == NULL)
 662                 break;
 663
 664             if (trackingGlobals->m_currentTarget)
 665             {
 666                 trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag );
 667                 trackingGlobals->m_currentTarget->OnLeave();
 668                 HideDragHilite( theDrag );
 669                 trackingGlobals->m_currentTarget = NULL;
 670             }
 671             trackingGlobals->m_currentTargetWindow = NULL;
 672             break;
 673
 674         default:
 675             break;
 676     }
 677
 678     return noErr;
 679 }
 680
 681 pascal OSErr wxMacWindowDragReceiveHandler(
 682     WindowPtr theWindow,
 683     void *handlerRefCon,
 684     DragReference theDrag)
 685 {
 686     MacTrackingGlobals* trackingGlobals = (MacTrackingGlobals*)handlerRefCon;
 687     if ( trackingGlobals->m_currentTarget )
 688     {
 689         Point mouse, localMouse;
 690         int localx, localy;
 691
 692         trackingGlobals->m_currentTarget->SetCurrentDrag( theDrag );
 693         GetDragMouse( theDrag, &mouse, 0L );
 694         localMouse = mouse;
 695         GlobalToLocal( &localMouse );
 696         localx = localMouse.h;
 697         localy = localMouse.v;
 698
 699         // TODO : should we use client coordinates?
 700         if ( trackingGlobals->m_currentTargetWindow )
 701             trackingGlobals->m_currentTargetWindow->MacRootWindowToWindow( &localx, &localy );
 702         if ( trackingGlobals->m_currentTarget->OnDrop( localx, localy ) )
 703         {
 704             bool optionDown = GetCurrentKeyModifiers() & optionKey;
 705             wxDragResult result = optionDown ? wxDragCopy : wxDragMove;
 706             trackingGlobals->m_currentTarget->OnData( localx, localy, result );
 707         }
 708     }
 709
 710     return noErr;
 711 }
 712
 713 #endif