src/osx/carbon/dataobj.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/dataobj.cpp
   3 // Purpose:     implementation of wxDataObject class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     10/21/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 Stefan Csomor
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #if wxUSE_DATAOBJ
  16
  17 #include "wx/dataobj.h"
  18
  19 #ifndef WX_PRECOMP
  20     #include "wx/intl.h"
  21     #include "wx/log.h"
  22     #include "wx/dcmemory.h"
  23     #include "wx/image.h"
  24 #endif
  25
  26 #include "wx/mstream.h"
  27 #include "wx/metafile.h"
  28 #include "wx/tokenzr.h"
  29
  30 #include "wx/osx/private.h"
  31
  32 #if wxOSX_USE_COCOA_OR_CARBON
  33     #include <QuickTime/QuickTime.h>
  34 #endif
  35
  36
  37 // ----------------------------------------------------------------------------
  38 // wxDataFormat
  39 // ----------------------------------------------------------------------------
  40
  41 wxDataFormat::wxDataFormat()
  42 {
  43     m_type = wxDF_INVALID;
  44     m_format = 0;
  45 }
  46
  47 wxDataFormat::wxDataFormat( wxDataFormatId vType )
  48 {
  49     m_format = 0;
  50     m_type = wxDF_INVALID;
  51     SetType( vType );
  52 }
  53
  54 wxDataFormat::wxDataFormat( const wxChar *zId )
  55 {
  56     m_format = 0;
  57     m_type = wxDF_INVALID;
  58     SetId( zId );
  59 }
  60
  61 wxDataFormat::wxDataFormat( const wxString& rId )
  62 {
  63     m_format = 0;
  64     m_type = wxDF_INVALID;
  65     SetId( rId );
  66 }
  67
  68 wxDataFormat::wxDataFormat(const wxDataFormat& rFormat)
  69 {
  70     if ( rFormat.m_format )
  71         m_format = (NativeFormat) CFStringCreateCopy(NULL, (CFStringRef)rFormat.m_format);
  72     else
  73         m_format = 0;
  74     m_type = rFormat.m_type;
  75     m_id = rFormat.m_id;
  76 }
  77
  78 wxDataFormat::wxDataFormat( NativeFormat vFormat )
  79 {
  80     m_format = 0;
  81     m_type = wxDF_INVALID;
  82     SetId( vFormat );
  83 }
  84
  85 wxDataFormat::~wxDataFormat()
  86 {
  87     if ( m_format != 0 )
  88     {
  89         CFRelease( (CFStringRef) m_format );
  90         m_format = 0;
  91     }
  92 }
  93
  94 // in order to be correct for 10.3 we restrict to the available types there
  95 // http://developer.apple.com/qa/qa2005/qa1406.html
  96 // TODO : Use UTCoreTypes.h constants once we support 10.4+ only
  97
  98 wxDataFormat& wxDataFormat::operator=(const wxDataFormat& rFormat)
  99 {
 100     if ( m_format != 0 )
 101     {
 102         CFRelease( (CFStringRef) m_format );
 103         m_format = 0;
 104     }
 105     if ( rFormat.m_format )
 106         m_format = (NativeFormat) CFStringCreateCopy(NULL, (CFStringRef)rFormat.m_format);
 107     m_type = rFormat.m_type;
 108     m_id = rFormat.m_id;
 109     return *this;
 110 }
 111
 112 void wxDataFormat::SetType( wxDataFormatId dataType )
 113 {
 114     m_type = dataType;
 115     if ( m_format != 0 )
 116     {
 117         CFRelease( (CFStringRef) m_format );
 118         m_format = 0;
 119     }
 120
 121     switch (m_type)
 122     {
 123     case wxDF_TEXT:
 124         m_format = (long) CFStringCreateCopy( NULL, CFSTR("public.plain-text") );
 125         break;
 126
 127     case wxDF_UNICODETEXT:
 128         m_format = (long) CFStringCreateCopy( NULL, CFSTR("public.utf16-plain-text") );
 129         break;
 130
 131     case wxDF_BITMAP:
 132         m_format = (long) CFStringCreateCopy( NULL, CFSTR("public.tiff") );
 133         break;
 134     case wxDF_METAFILE:
 135         m_format = (long) CFStringCreateCopy( NULL, CFSTR("com.adobe.pdf") );
 136         break;
 137
 138     case wxDF_FILENAME:
 139         m_format = (long) CFStringCreateCopy( NULL, CFSTR("public.file-url") );
 140         break;
 141
 142     default:
 143        wxFAIL_MSG( wxT("invalid data format") );
 144        break;
 145     }
 146 }
 147
 148 wxString wxDataFormat::GetId() const
 149 {
 150     return wxCFStringRef(wxCFRetain((CFStringRef)m_format)).AsString();
 151 }
 152
 153 void wxDataFormat::SetId( NativeFormat format )
 154 {
 155     if ( m_format != 0 )
 156     {
 157         CFRelease( (CFStringRef) m_format );
 158         m_format = 0;
 159     }
 160     m_format = (NativeFormat) CFStringCreateCopy(NULL, (CFStringRef)format);
 161     if (  UTTypeConformsTo( (CFStringRef)format, CFSTR("public.utf16-plain-text") )  )
 162     {
 163         m_type = wxDF_UNICODETEXT;
 164     }
 165     else if ( UTTypeConformsTo( (CFStringRef)format, CFSTR("public.plain-text") ) )
 166     {
 167         m_type = wxDF_TEXT;
 168     }
 169     else if (  UTTypeConformsTo( (CFStringRef)format, CFSTR("public.tiff") )  )
 170     {
 171         m_type = wxDF_BITMAP;
 172     }
 173     else if (  UTTypeConformsTo( (CFStringRef)format, CFSTR("com.adobe.pdf") )  )
 174     {
 175         m_type = wxDF_METAFILE;
 176     }
 177     else if (  UTTypeConformsTo( (CFStringRef)format, CFSTR("public.file-url") )  )
 178     {
 179         m_type = wxDF_FILENAME;
 180     }
 181     else
 182     {
 183         m_type = wxDF_PRIVATE;
 184         m_id = wxCFStringRef( (CFStringRef) CFRetain((CFStringRef) format )).AsString();
 185     }
 186 }
 187
 188 void wxDataFormat::SetId( const wxString& zId )
 189 {
 190     m_type = wxDF_PRIVATE;
 191     m_id = zId;
 192     if ( m_format != 0 )
 193     {
 194         CFRelease( (CFStringRef) m_format );
 195         m_format = 0;
 196     }
 197     // since it is private, no need to conform to anything ...
 198     m_format = (long) wxCFRetain( (CFStringRef) wxCFStringRef(m_id) );
 199 }
 200
 201 bool wxDataFormat::operator==(const wxDataFormat& format) const
 202 {
 203     if (IsStandard() || format.IsStandard())
 204         return (format.m_type == m_type);
 205     else
 206         return ( UTTypeConformsTo( (CFStringRef) m_format , (CFStringRef) format.m_format ) );
 207 }
 208
 209 //-------------------------------------------------------------------------
 210 // wxDataObject
 211 //-------------------------------------------------------------------------
 212
 213 wxDataObject::wxDataObject()
 214 {
 215 }
 216
 217 bool wxDataObject::IsSupportedFormat( const wxDataFormat& rFormat, Direction vDir ) const
 218 {
 219     size_t nFormatCount = GetFormatCount( vDir );
 220     bool found = false;
 221
 222     if (nFormatCount == 1)
 223     {
 224         found = (rFormat == GetPreferredFormat());
 225     }
 226     else
 227     {
 228         wxDataFormat *pFormats = new wxDataFormat[nFormatCount];
 229         GetAllFormats( pFormats, vDir );
 230
 231         for (size_t n = 0; n < nFormatCount; n++)
 232         {
 233             if (pFormats[n] == rFormat)
 234             {
 235                 found = true;
 236                 break;
 237             }
 238         }
 239
 240         delete [] pFormats;
 241     }
 242
 243     return found;
 244 }
 245
 246 void wxDataObject::AddToPasteboard( void * pb, int itemID )
 247 {
 248     PasteboardRef pasteboard = (PasteboardRef) pb;
 249    // get formats from wxDataObjects
 250     wxDataFormat *array = new wxDataFormat[ GetFormatCount() ];
 251     GetAllFormats( array );
 252
 253     for (size_t i = 0; i < GetFormatCount(); i++)
 254     {
 255         wxDataFormat thisFormat = array[ i ];
 256
 257         // add four bytes at the end for data objs like text that
 258         // have a datasize = strlen but still need a buffer for the
 259         // string including trailing zero
 260
 261         size_t datasize = GetDataSize( thisFormat );
 262         size_t sz = datasize + 4;
 263         void* buf = malloc( sz );
 264         if ( buf != NULL )
 265         {
 266             // empty the buffer because in some case GetDataHere does not fill buf
 267             memset( buf, 0, sz );
 268             if ( GetDataHere( array[ i ], buf ) )
 269             {
 270                 int counter = 1 ;
 271                 if ( thisFormat.GetType() == wxDF_FILENAME )
 272                 {
 273                     // the data is D-normalized UTF8 strings of filenames delimited with \n
 274                     char *fname = strtok((char*) buf,"\n");
 275                     while (fname != NULL)
 276                     {
 277                         // translate the filepath into a fileurl and put that into the pasteobard
 278                         CFStringRef path = CFStringCreateWithBytes(NULL,(UInt8*)fname,strlen(fname),kCFStringEncodingUTF8,false);
 279                         CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path , kCFURLPOSIXPathStyle, false);
 280                         CFRelease(path);
 281                         CFDataRef data = CFURLCreateData(NULL,url,kCFStringEncodingUTF8,true);
 282                         CFRelease(url);
 283                         PasteboardPutItemFlavor( pasteboard, (PasteboardItemID) counter,
 284                             (CFStringRef) thisFormat.GetFormatId() , data, kPasteboardFlavorNoFlags);
 285                         CFRelease( data );
 286                         counter++;
 287                         fname = strtok (NULL,"\n");
 288                     }
 289
 290                 }
 291                 else
 292                 {
 293                     CFDataRef data = CFDataCreate( kCFAllocatorDefault, (UInt8*)buf, datasize );
 294                     if ( thisFormat.GetType() == wxDF_TEXT )
 295                          PasteboardPutItemFlavor( pasteboard, (PasteboardItemID) itemID,
 296                             CFSTR("com.apple.traditional-mac-plain-text") , data, kPasteboardFlavorNoFlags);
 297                     else
 298                         PasteboardPutItemFlavor( pasteboard, (PasteboardItemID) itemID,
 299                             (CFStringRef) thisFormat.GetFormatId() , data, kPasteboardFlavorNoFlags);
 300                     CFRelease( data );
 301                 }
 302             }
 303             free( buf );
 304         }
 305     }
 306
 307     delete [] array;
 308 }
 309
 310 bool wxDataObject::IsFormatInPasteboard( void * pb, const wxDataFormat &dataFormat )
 311 {
 312     PasteboardRef pasteboard = (PasteboardRef) pb;
 313     bool hasData = false;
 314     OSStatus err = noErr;
 315     ItemCount itemCount;
 316
 317     // we synchronize here once again, so we don't mind which flags get returned
 318     PasteboardSynchronize( pasteboard );
 319
 320     err = PasteboardGetItemCount( pasteboard, &itemCount );
 321     if ( err == noErr )
 322     {
 323         for( UInt32 itemIndex = 1; itemIndex <= itemCount && hasData == false ; itemIndex++ )
 324         {
 325             PasteboardItemID    itemID;
 326             CFArrayRef          flavorTypeArray;
 327             CFIndex             flavorCount;
 328
 329             err = PasteboardGetItemIdentifier( pasteboard, itemIndex, &itemID );
 330             if ( err != noErr )
 331                 continue;
 332
 333             err = PasteboardCopyItemFlavors( pasteboard, itemID, &flavorTypeArray );
 334             if ( err != noErr )
 335                 continue;
 336
 337             flavorCount = CFArrayGetCount( flavorTypeArray );
 338
 339             for( CFIndex flavorIndex = 0; flavorIndex < flavorCount && hasData == false ; flavorIndex++ )
 340             {
 341                 CFStringRef             flavorType;
 342
 343                 flavorType = (CFStringRef)CFArrayGetValueAtIndex( flavorTypeArray,
 344                                                                      flavorIndex );
 345
 346                 wxDataFormat flavorFormat( (wxDataFormat::NativeFormat) flavorType );
 347                 if ( dataFormat == flavorFormat )
 348                     hasData = true;
 349                 else if (  dataFormat.GetType() == wxDF_UNICODETEXT && flavorFormat.GetType() == wxDF_TEXT )
 350                     hasData = true;
 351             }
 352             CFRelease (flavorTypeArray);
 353         }
 354     }
 355
 356     return hasData;
 357 }
 358
 359 bool wxDataObject::GetFromPasteboard( void * pb )
 360 {
 361     PasteboardRef pasteboard = (PasteboardRef) pb;
 362     size_t formatcount = GetFormatCount() + 1;
 363     wxDataFormat *array = new wxDataFormat[ formatcount ];
 364     array[0] = GetPreferredFormat();
 365     GetAllFormats( &array[1] );
 366     ItemCount itemCount = 0;
 367     wxString filenamesPassed;
 368     bool transferred = false;
 369
 370     // we synchronize here once again, so we don't mind which flags get returned
 371     PasteboardSynchronize( pasteboard );
 372
 373     OSStatus err = PasteboardGetItemCount( pasteboard, &itemCount );
 374     if ( err == noErr )
 375     {
 376         for (size_t i = 0; !transferred && i < formatcount; i++)
 377         {
 378             // go through the data in our order of preference
 379             wxDataFormat dataFormat = array[ i ];
 380
 381             for( UInt32 itemIndex = 1; itemIndex <= itemCount && transferred == false ; itemIndex++ )
 382             {
 383                 PasteboardItemID    itemID = 0;
 384                 CFArrayRef          flavorTypeArray = NULL;
 385                 CFIndex             flavorCount = 0;
 386
 387                 err = PasteboardGetItemIdentifier( pasteboard, itemIndex, &itemID );
 388                 if ( err != noErr )
 389                     continue;
 390
 391                 err = PasteboardCopyItemFlavors( pasteboard, itemID, &flavorTypeArray );
 392                 if ( err != noErr )
 393                     continue;
 394
 395                 flavorCount = CFArrayGetCount( flavorTypeArray );
 396
 397                 for( CFIndex flavorIndex = 0; !transferred && flavorIndex < flavorCount ; flavorIndex++ )
 398                 {
 399                     CFStringRef             flavorType;
 400                     CFDataRef               flavorData;
 401                     CFIndex                 flavorDataSize;
 402
 403                     flavorType = (CFStringRef)CFArrayGetValueAtIndex( flavorTypeArray,
 404                                                                          flavorIndex );
 405
 406                     // avoid utf8 being treated closer to plain-text than unicode by forcing a conversion
 407                     if ( UTTypeConformsTo(flavorType, CFSTR("public.utf8-plain-text") ) )
 408                     {
 409                         flavorType = CFSTR("public.utf16-plain-text");
 410                     }
 411                     wxDataFormat flavorFormat( (wxDataFormat::NativeFormat) flavorType );
 412
 413                     if ( dataFormat == flavorFormat )
 414                     {
 415                         err = PasteboardCopyItemFlavorData( pasteboard, itemID, flavorType , &flavorData );
 416                         if ( err == noErr )
 417                         {
 418                             flavorDataSize = CFDataGetLength( flavorData );
 419                             if (dataFormat.GetType() == wxDF_FILENAME )
 420                             {
 421                                 // revert the translation and decomposition to arrive at a proper utf8 string again
 422                                 CFURLRef url = CFURLCreateWithBytes( kCFAllocatorDefault, CFDataGetBytePtr( flavorData ), flavorDataSize, kCFStringEncodingUTF8, NULL );
 423                                 CFStringRef cfString = CFURLCopyFileSystemPath( url, kCFURLPOSIXPathStyle );
 424                                 CFRelease( url );
 425                                 CFMutableStringRef cfMutableString = CFStringCreateMutableCopy(NULL, 0, cfString);
 426                                 CFRelease( cfString );
 427                                 CFStringNormalize(cfMutableString,kCFStringNormalizationFormC);
 428                                 wxString path = wxCFStringRef(cfMutableString).AsString();
 429                                 if (!path.empty())
 430                                     filenamesPassed += path + wxT("\n");
 431                             }
 432                             else
 433                             {
 434                                 // because some data implementation expect trailing a trailing NUL, we add some headroom
 435                                 void *buf = malloc( flavorDataSize + 4 );
 436                                 if ( buf )
 437                                 {
 438                                     memset( buf, 0, flavorDataSize + 4 );
 439                                     memcpy( buf, CFDataGetBytePtr( flavorData ), flavorDataSize );
 440
 441                                     if (dataFormat.GetType() == wxDF_TEXT)
 442                                         wxMacConvertNewlines10To13( (char*) buf );
 443                                     SetData( flavorFormat, flavorDataSize, buf );
 444                                     transferred = true;
 445                                     free( buf );
 446                                 }
 447                             }
 448                             CFRelease (flavorData);
 449                         }
 450                     }
 451                     else if ( dataFormat.GetType() == wxDF_UNICODETEXT && flavorFormat.GetType() == wxDF_TEXT )
 452                     {
 453                         err = PasteboardCopyItemFlavorData( pasteboard, itemID, flavorType, &flavorData );
 454                         if ( err == noErr )
 455                         {
 456                             flavorDataSize = CFDataGetLength( flavorData );
 457                             void *asciibuf = malloc( flavorDataSize + 1 );
 458                             if ( asciibuf )
 459                             {
 460                                 memset( asciibuf, 0, flavorDataSize + 1 );
 461                                 memcpy( asciibuf, CFDataGetBytePtr( flavorData ), flavorDataSize );
 462                                 CFRelease (flavorData);
 463
 464                                 SetData( wxDF_TEXT, flavorDataSize, asciibuf );
 465                                 transferred = true;
 466                                 free( asciibuf );
 467                             }
 468                             else
 469                                 CFRelease (flavorData);
 470                         }
 471                     }
 472                 }
 473                 CFRelease( flavorTypeArray );
 474             }
 475             if (filenamesPassed.length() > 0)
 476             {
 477                 wxCharBuffer buf = filenamesPassed.fn_str();
 478                 SetData( wxDF_FILENAME, strlen( buf ), (const char*)buf );
 479                 transferred = true;
 480             }
 481         }
 482     }
 483     return transferred;
 484 }
 485
 486 bool wxDataObject::HasDataInPasteboard( void * pb )
 487 {
 488     PasteboardRef pasteboard = (PasteboardRef) pb;
 489     size_t formatcount = GetFormatCount() + 1;
 490     wxDataFormat *array = new wxDataFormat[ formatcount ];
 491     array[0] = GetPreferredFormat();
 492     GetAllFormats( &array[1] );
 493     ItemCount itemCount = 0;
 494     bool hasData = false;
 495
 496     // we synchronize here once again, so we don't mind which flags get returned
 497     PasteboardSynchronize( pasteboard );
 498
 499     OSStatus err = PasteboardGetItemCount( pasteboard, &itemCount );
 500     if ( err == noErr )
 501     {
 502         for (size_t i = 0; !hasData && i < formatcount; i++)
 503         {
 504             // go through the data in our order of preference
 505             wxDataFormat dataFormat = array[ i ];
 506
 507             for( UInt32 itemIndex = 1; itemIndex <= itemCount && hasData == false ; itemIndex++ )
 508             {
 509                 PasteboardItemID    itemID = 0;
 510                 CFArrayRef          flavorTypeArray = NULL;
 511                 CFIndex             flavorCount = 0;
 512
 513                 err = PasteboardGetItemIdentifier( pasteboard, itemIndex, &itemID );
 514                 if ( err != noErr )
 515                     continue;
 516
 517                 err = PasteboardCopyItemFlavors( pasteboard, itemID, &flavorTypeArray );
 518                 if ( err != noErr )
 519                     continue;
 520
 521                 flavorCount = CFArrayGetCount( flavorTypeArray );
 522
 523                 for( CFIndex flavorIndex = 0; !hasData && flavorIndex < flavorCount ; flavorIndex++ )
 524                 {
 525                     CFStringRef             flavorType;
 526
 527                     flavorType = (CFStringRef)CFArrayGetValueAtIndex( flavorTypeArray,
 528                                                                          flavorIndex );
 529
 530                     wxDataFormat flavorFormat( (wxDataFormat::NativeFormat) flavorType );
 531
 532                     if ( dataFormat == flavorFormat ||
 533                         dataFormat.GetType() == wxDF_UNICODETEXT && flavorFormat.GetType() == wxDF_TEXT )
 534                     {
 535                         hasData = true;
 536                     }
 537                 }
 538                 CFRelease( flavorTypeArray );
 539             }
 540         }
 541     }
 542     return hasData;
 543 }
 544
 545 // ----------------------------------------------------------------------------
 546 // wxTextDataObject
 547 // ----------------------------------------------------------------------------
 548
 549 #if wxUSE_UNICODE
 550 void wxTextDataObject::GetAllFormats(wxDataFormat *formats,
 551                                      wxDataObjectBase::Direction WXUNUSED(dir)) const
 552 {
 553     *formats++ = wxDataFormat( wxDF_TEXT );
 554     *formats = wxDataFormat( wxDF_UNICODETEXT );
 555 }
 556 #endif
 557
 558 // ----------------------------------------------------------------------------
 559 // wxFileDataObject
 560 // ----------------------------------------------------------------------------
 561
 562 void wxFileDataObject::GetFileNames( wxCharBuffer &buf ) const
 563 {
 564     wxString filenames;
 565
 566     for (size_t i = 0; i < m_filenames.GetCount(); i++)
 567     {
 568         filenames += m_filenames[i];
 569         filenames += wxT('\n');
 570     }
 571
 572     buf = filenames.fn_str();
 573 }
 574
 575 bool wxFileDataObject::GetDataHere( void *pBuf ) const
 576 {
 577     if (pBuf == NULL)
 578         return false;
 579
 580     wxCharBuffer buf;
 581     size_t buffLength;
 582
 583     GetFileNames( buf );
 584     buffLength = strlen( buf );
 585     memcpy( pBuf, (const char*)buf, buffLength + 1 );
 586
 587     return true;
 588 }
 589
 590 size_t wxFileDataObject::GetDataSize() const
 591 {
 592     wxCharBuffer buf;
 593     size_t buffLength;
 594
 595     GetFileNames( buf );
 596     buffLength = strlen( buf );
 597     // terminating 0
 598     return buffLength + 1;
 599 }
 600
 601 bool wxFileDataObject::SetData( size_t WXUNUSED(nSize), const void *pBuf )
 602 {
 603     wxString filenames;
 604
 605 #if wxUSE_UNICODE
 606     filenames = wxString( (const char*)pBuf, *wxConvFileName );
 607 #else
 608     filenames = wxString (wxConvLocal.cWC2WX(wxConvFileName->cMB2WC( (const char*)pBuf)));
 609 #endif
 610
 611     m_filenames = wxStringTokenize( filenames, wxT("\n"), wxTOKEN_STRTOK );
 612
 613     return true;
 614 }
 615
 616 void wxFileDataObject::AddFile( const wxString& rFilename )
 617 {
 618     m_filenames.Add( rFilename );
 619 }
 620
 621 // ----------------------------------------------------------------------------
 622 // wxBitmapDataObject
 623 // ----------------------------------------------------------------------------
 624
 625 wxBitmapDataObject::wxBitmapDataObject()
 626 {
 627     Init();
 628 }
 629
 630 wxBitmapDataObject::wxBitmapDataObject( const wxBitmap& rBitmap )
 631 : wxBitmapDataObjectBase( rBitmap )
 632 {
 633     Init();
 634
 635     if (m_bitmap.Ok())
 636     {
 637         SetBitmap( rBitmap );
 638     }
 639 }
 640
 641 wxBitmapDataObject::~wxBitmapDataObject()
 642 {
 643     Clear();
 644 }
 645
 646 void wxBitmapDataObject::SetBitmap( const wxBitmap& rBitmap )
 647 {
 648     Clear();
 649     wxBitmapDataObjectBase::SetBitmap( rBitmap );
 650     if (m_bitmap.Ok())
 651     {
 652         CGImageRef cgImageRef = (CGImageRef) m_bitmap.CreateCGImage();
 653
 654         CFMutableDataRef data = CFDataCreateMutable(kCFAllocatorDefault, 0);
 655         CGImageDestinationRef destination = CGImageDestinationCreateWithData( data , kUTTypeTIFF , 1 , NULL );
 656         if ( destination )
 657         {
 658             CGImageDestinationAddImage( destination, cgImageRef, NULL );
 659             CGImageDestinationFinalize( destination );
 660             CFRelease( destination );
 661         }
 662         m_pictHandle = NewHandle(CFDataGetLength(data));
 663         if ( m_pictHandle )
 664         {
 665             memcpy( *(Handle)m_pictHandle, (const char *)CFDataGetBytePtr(data), CFDataGetLength(data) );
 666         }
 667         CFRelease( data );
 668
 669         CGImageRelease(cgImageRef);
 670     }
 671 }
 672
 673 void wxBitmapDataObject::Init()
 674 {
 675     m_pictHandle = NULL;
 676     m_pictCreated = false;
 677 }
 678
 679 void wxBitmapDataObject::Clear()
 680 {
 681     if (m_pictHandle != NULL)
 682     {
 683         DisposeHandle( (Handle) m_pictHandle );
 684         m_pictHandle = NULL;
 685     }
 686     m_pictCreated = false;
 687 }
 688
 689 bool wxBitmapDataObject::GetDataHere( void *pBuf ) const
 690 {
 691     if (m_pictHandle == NULL)
 692     {
 693         wxFAIL_MSG( wxT("attempt to copy empty bitmap failed") );
 694         return false;
 695     }
 696
 697     if (pBuf == NULL)
 698         return false;
 699
 700     memcpy( pBuf, *(Handle)m_pictHandle, GetHandleSize( (Handle)m_pictHandle ) );
 701
 702     return true;
 703 }
 704
 705 size_t wxBitmapDataObject::GetDataSize() const
 706 {
 707     if (m_pictHandle != NULL)
 708         return GetHandleSize( (Handle)m_pictHandle );
 709     else
 710         return 0;
 711 }
 712
 713 Handle MacCreateDataReferenceHandle(Handle theDataHandle)
 714 {
 715     Handle  dataRef = NULL;
 716     OSErr   err     = noErr;
 717
 718     // Create a data reference handle for our data.
 719     err = PtrToHand( &theDataHandle, &dataRef, sizeof(Handle));
 720
 721     return dataRef;
 722 }
 723
 724 bool wxBitmapDataObject::SetData( size_t nSize, const void *pBuf )
 725 {
 726     Clear();
 727
 728     if ((pBuf == NULL) || (nSize == 0))
 729         return false;
 730
 731     Handle picHandle = NewHandle( nSize );
 732     memcpy( *picHandle, pBuf, nSize );
 733     m_pictHandle = picHandle;
 734     CGImageRef cgImageRef = 0;
 735
 736     CFDataRef data = CFDataCreateWithBytesNoCopy( kCFAllocatorDefault, (const UInt8*) pBuf, nSize, kCFAllocatorNull);
 737     CGImageSourceRef source = CGImageSourceCreateWithData( data, NULL );
 738     if ( source )
 739     {
 740         cgImageRef = CGImageSourceCreateImageAtIndex(source, 0, NULL);
 741     }
 742     CFRelease( source );
 743     CFRelease( data );
 744
 745     if ( cgImageRef )
 746     {
 747         m_bitmap.Create( CGImageGetWidth(cgImageRef)  , CGImageGetHeight(cgImageRef) );
 748         CGRect r = CGRectMake( 0 , 0 , CGImageGetWidth(cgImageRef)  , CGImageGetHeight(cgImageRef) );
 749         // since our context is upside down we dont use CGContextDrawImage
 750         wxMacDrawCGImage( (CGContextRef) m_bitmap.GetHBITMAP() , &r, cgImageRef ) ;
 751         CGImageRelease(cgImageRef);
 752         cgImageRef = NULL;
 753     }
 754
 755     return m_bitmap.Ok();
 756 }
 757
 758 #endif