src/osx/core/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/core/bitmap.cpp
   3 // Purpose:     wxBitmap
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/bitmap.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/log.h"
  18     #include "wx/dcmemory.h"
  19     #include "wx/icon.h"
  20     #include "wx/image.h"
  21 #endif
  22
  23 #include "wx/metafile.h"
  24 #include "wx/xpmdecod.h"
  25
  26 #include "wx/rawbmp.h"
  27
  28 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
  29 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
  30
  31 #if wxOSX_USE_CARBON
  32 #include "wx/osx/uma.h"
  33 #else
  34 #include "wx/osx/private.h"
  35 #endif
  36
  37 #ifndef __WXOSX_IPHONE__
  38 #include <QuickTime/QuickTime.h>
  39 #endif
  40
  41 CGColorSpaceRef wxMacGetGenericRGBColorSpace();
  42 CGDataProviderRef wxMacCGDataProviderCreateWithMemoryBuffer( const wxMemoryBuffer& buf );
  43
  44 // Implementation Notes
  45 // --------------------
  46 //
  47 // we are always working with a 32 bit deep pixel buffer
  48 // under QuickDraw its alpha parts are going to be ignored in the GWorld,
  49 // therefore we have a separate GWorld there for blitting the mask in
  50
  51 // under Quartz then content is transformed into a CGImageRef representing the same data
  52 // which can be transferred to the GPU by the OS for fast rendering
  53
  54 class WXDLLEXPORT wxBitmapRefData: public wxGDIRefData
  55 {
  56     friend class WXDLLIMPEXP_FWD_CORE wxIcon;
  57     friend class WXDLLIMPEXP_FWD_CORE wxCursor;
  58 public:
  59     wxBitmapRefData(int width , int height , int depth);
  60     wxBitmapRefData();
  61     wxBitmapRefData(const wxBitmapRefData &tocopy);
  62
  63     virtual ~wxBitmapRefData();
  64
  65     virtual bool IsOk() const { return m_ok; }
  66
  67     void Free();
  68     void SetOk( bool isOk) { m_ok = isOk; }
  69
  70     void SetWidth( int width ) { m_width = width; }
  71     void SetHeight( int height ) { m_height = height; }
  72     void SetDepth( int depth ) { m_depth = depth; }
  73
  74     int GetWidth() const { return m_width; }
  75     int GetHeight() const { return m_height; }
  76     int GetDepth() const { return m_depth; }
  77
  78     void *GetRawAccess() const;
  79     void *BeginRawAccess();
  80     void EndRawAccess();
  81
  82     bool HasAlpha() const { return m_hasAlpha; }
  83     void UseAlpha( bool useAlpha );
  84
  85 public:
  86 #if wxUSE_PALETTE
  87     wxPalette     m_bitmapPalette;
  88 #endif // wxUSE_PALETTE
  89
  90     wxMask *      m_bitmapMask; // Optional mask
  91     CGImageRef    CreateCGImage() const;
  92
  93     // returns true if the bitmap has a size that
  94     // can be natively transferred into a true icon
  95     // if no is returned GetIconRef will still produce
  96     // an icon but it will be generated via a PICT and
  97     // rescaled to 16 x 16
  98     bool          HasNativeSize();
  99
 100     // caller should increase ref count if needed longer
 101     // than the bitmap exists
 102     IconRef       GetIconRef();
 103
 104 #ifndef __WXOSX_IPHONE__
 105     // returns a Pict from the bitmap content
 106     PicHandle     GetPictHandle();
 107 #endif
 108
 109     CGContextRef  GetBitmapContext() const;
 110
 111     int           GetBytesPerRow() const { return m_bytesPerRow; }
 112     private :
 113     bool Create(int width , int height , int depth);
 114     void Init();
 115
 116     int           m_width;
 117     int           m_height;
 118     int           m_bytesPerRow;
 119     int           m_depth;
 120     bool          m_hasAlpha;
 121     wxMemoryBuffer m_memBuf;
 122     int           m_rawAccessCount;
 123     bool          m_ok;
 124     mutable CGImageRef    m_cgImageRef;
 125
 126     IconRef       m_iconRef;
 127 #ifndef __WXOSX_IPHONE__
 128     PicHandle     m_pictHandle;
 129 #endif
 130     CGContextRef  m_hBitmap;
 131 };
 132
 133
 134 #define wxOSX_USE_PREMULTIPLIED_ALPHA 1
 135 static const int kBestByteAlignement = 16;
 136 static const int kMaskBytesPerPixel = 1;
 137
 138 static int GetBestBytesPerRow( int rawBytes )
 139 {
 140     return (((rawBytes)+kBestByteAlignement-1) & ~(kBestByteAlignement-1) );
 141 }
 142
 143 #if wxUSE_GUI && !defined(__WXOSX_IPHONE__)
 144
 145 // this is used for more controls than just the wxBitmap button, also for notebooks etc
 146
 147 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
 148 {
 149     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
 150     if ( bitmap.Ok() )
 151     {
 152         wxBitmapRefData * bmap = bitmap.GetBitmapData() ;
 153         if ( bmap == NULL )
 154             return ;
 155
 156         if ( forceType == 0  )
 157         {
 158             forceType = kControlContentCGImageRef;
 159         }
 160
 161         if ( forceType == kControlContentIconRef )
 162         {
 163             wxBitmap scaleBmp ;
 164             wxBitmapRefData* bmp = bmap ;
 165
 166             if ( !bmap->HasNativeSize() )
 167             {
 168                 // as PICT conversion will only result in a 16x16 icon, let's attempt
 169                 // a few scales for better results
 170
 171                 int w = bitmap.GetWidth() ;
 172                 int h = bitmap.GetHeight() ;
 173                 int sz = wxMax( w , h ) ;
 174                 if ( sz == 24 || sz == 64 )
 175                 {
 176                     scaleBmp = wxBitmap( bitmap.ConvertToImage().Scale( w * 2 , h * 2 ) ) ;
 177                     bmp = scaleBmp.GetBitmapData() ;
 178                 }
 179             }
 180
 181             info->contentType = kControlContentIconRef ;
 182             info->u.iconRef = bmp->GetIconRef() ;
 183             AcquireIconRef( info->u.iconRef ) ;
 184         }
 185         else if ( forceType == kControlContentCGImageRef )
 186         {
 187             info->contentType = kControlContentCGImageRef ;
 188             info->u.imageRef = (CGImageRef) bmap->CreateCGImage() ;
 189         }
 190         else
 191         {
 192 #ifndef __LP64__
 193             info->contentType = kControlContentPictHandle ;
 194             info->u.picture = bmap->GetPictHandle() ;
 195 #endif
 196         }
 197     }
 198 }
 199
 200 CGImageRef wxMacCreateCGImageFromBitmap( const wxBitmap& bitmap )
 201 {
 202     wxBitmapRefData * bmap = bitmap.GetBitmapData() ;
 203     if ( bmap == NULL )
 204         return NULL ;
 205     return (CGImageRef) bmap->CreateCGImage();
 206 }
 207
 208 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
 209 {
 210     if ( info->contentType == kControlContentIconRef )
 211     {
 212         ReleaseIconRef( info->u.iconRef ) ;
 213     }
 214     else if ( info->contentType == kControlNoContent )
 215     {
 216         // there's no bitmap at all, fall through silently
 217     }
 218     else if ( info->contentType == kControlContentPictHandle )
 219     {
 220         // owned by the bitmap, no release here
 221     }
 222     else if ( info->contentType == kControlContentCGImageRef )
 223     {
 224         CGImageRelease( info->u.imageRef ) ;
 225     }
 226     else
 227     {
 228         wxFAIL_MSG(wxT("Unexpected bitmap type") ) ;
 229     }
 230 }
 231
 232 #endif //wxUSE_BMPBUTTON
 233
 234 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
 235
 236 void wxBitmapRefData::Init()
 237 {
 238     m_width = 0 ;
 239     m_height = 0 ;
 240     m_depth = 0 ;
 241     m_bytesPerRow = 0;
 242     m_ok = false ;
 243     m_bitmapMask = NULL ;
 244     m_cgImageRef = NULL ;
 245
 246 #ifndef __WXOSX_IPHONE__
 247     m_iconRef = NULL ;
 248     m_pictHandle = NULL ;
 249 #endif
 250     m_hBitmap = NULL ;
 251
 252     m_rawAccessCount = 0 ;
 253     m_hasAlpha = false;
 254 }
 255
 256 wxBitmapRefData::wxBitmapRefData(const wxBitmapRefData &tocopy)
 257 {
 258     Init();
 259     Create(tocopy.m_width, tocopy.m_height, tocopy.m_depth);
 260
 261     if (tocopy.m_bitmapMask)
 262         m_bitmapMask = new wxMask(*tocopy.m_bitmapMask);
 263     else if (tocopy.m_hasAlpha)
 264         UseAlpha(true);
 265
 266     unsigned char* dest = (unsigned char*)GetRawAccess();
 267     unsigned char* source = (unsigned char*)tocopy.GetRawAccess();
 268     size_t numbytes = m_bytesPerRow * m_height;
 269     memcpy( dest, source, numbytes );
 270 }
 271
 272 wxBitmapRefData::wxBitmapRefData()
 273 {
 274     Init() ;
 275 }
 276
 277 wxBitmapRefData::wxBitmapRefData( int w , int h , int d )
 278 {
 279     Init() ;
 280     Create( w , h , d ) ;
 281 }
 282
 283 bool wxBitmapRefData::Create( int w , int h , int d )
 284 {
 285     m_width = wxMax(1, w);
 286     m_height = wxMax(1, h);
 287     m_depth = d ;
 288     m_hBitmap = NULL ;
 289
 290     m_bytesPerRow = GetBestBytesPerRow( w * 4 ) ;
 291     size_t size = m_bytesPerRow * h ;
 292     void* data = m_memBuf.GetWriteBuf( size ) ;
 293     if ( data != NULL )
 294     {
 295         memset( data , 0 , size ) ;
 296         m_memBuf.UngetWriteBuf( size ) ;
 297
 298         m_hBitmap = CGBitmapContextCreate((char*) data, m_width, m_height, 8, m_bytesPerRow, wxMacGetGenericRGBColorSpace(), kCGImageAlphaNoneSkipFirst );
 299         wxASSERT_MSG( m_hBitmap , wxT("Unable to create CGBitmapContext context") ) ;
 300         CGContextTranslateCTM( m_hBitmap, 0,  m_height );
 301         CGContextScaleCTM( m_hBitmap, 1, -1 );
 302     } /* data != NULL */
 303     m_ok = ( m_hBitmap != NULL ) ;
 304
 305     return m_ok ;
 306 }
 307
 308 void wxBitmapRefData::UseAlpha( bool use )
 309 {
 310     if ( m_hasAlpha == use )
 311         return ;
 312
 313     m_hasAlpha = use ;
 314
 315     CGContextRelease( m_hBitmap );
 316     m_hBitmap = CGBitmapContextCreate((char*) m_memBuf.GetData(), m_width, m_height, 8, m_bytesPerRow, wxMacGetGenericRGBColorSpace(), m_hasAlpha ? kCGImageAlphaPremultipliedFirst : kCGImageAlphaNoneSkipFirst );
 317     wxASSERT_MSG( m_hBitmap , wxT("Unable to create CGBitmapContext context") ) ;
 318     CGContextTranslateCTM( m_hBitmap, 0,  m_height );
 319     CGContextScaleCTM( m_hBitmap, 1, -1 );
 320 }
 321
 322 void *wxBitmapRefData::GetRawAccess() const
 323 {
 324     wxCHECK_MSG( IsOk(), NULL , wxT("invalid bitmap") ) ;
 325     return m_memBuf.GetData() ;
 326 }
 327
 328 void *wxBitmapRefData::BeginRawAccess()
 329 {
 330     wxCHECK_MSG( IsOk(), NULL, wxT("invalid bitmap") ) ;
 331     wxASSERT( m_rawAccessCount == 0 ) ;
 332 #ifndef __WXOSX_IPHONE__
 333     wxASSERT_MSG( m_pictHandle == NULL && m_iconRef == NULL ,
 334         wxT("Currently, modifing bitmaps that are used in controls already is not supported") ) ;
 335 #endif
 336     ++m_rawAccessCount ;
 337
 338     // we must destroy an existing cached image, as
 339     // the bitmap data may change now
 340     if ( m_cgImageRef )
 341     {
 342         CGImageRelease( m_cgImageRef ) ;
 343         m_cgImageRef = NULL ;
 344     }
 345
 346     return m_memBuf.GetData() ;
 347 }
 348
 349 void wxBitmapRefData::EndRawAccess()
 350 {
 351     wxCHECK_RET( IsOk() , wxT("invalid bitmap") ) ;
 352     wxASSERT( m_rawAccessCount == 1 ) ;
 353
 354     --m_rawAccessCount ;
 355 }
 356
 357 bool wxBitmapRefData::HasNativeSize()
 358 {
 359     int w = GetWidth() ;
 360     int h = GetHeight() ;
 361     int sz = wxMax( w , h ) ;
 362
 363     return ( sz == 128 || sz == 48 || sz == 32 || sz == 16 );
 364 }
 365
 366 #ifndef __WXOSX_IPHONE__
 367 IconRef wxBitmapRefData::GetIconRef()
 368 {
 369     if ( m_iconRef == NULL )
 370     {
 371         // Create Icon Family Handle
 372
 373         IconFamilyHandle iconFamily = (IconFamilyHandle) NewHandle( 0 );
 374
 375         int w = GetWidth() ;
 376         int h = GetHeight() ;
 377         int sz = wxMax( w , h ) ;
 378
 379         OSType dataType = 0 ;
 380         OSType maskType = 0 ;
 381
 382         switch (sz)
 383         {
 384             case 128:
 385 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 386                 if ( UMAGetSystemVersion() >= 0x1050 )
 387                 {
 388                     dataType = kIconServices128PixelDataARGB ;
 389                 }
 390                 else
 391 #endif
 392                 {
 393                     dataType = kThumbnail32BitData ;
 394                     maskType = kThumbnail8BitMask ;
 395                 }
 396                 break;
 397
 398             case 48:
 399 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 400                 if ( UMAGetSystemVersion() >= 0x1050 )
 401                 {
 402                     dataType = kIconServices48PixelDataARGB ;
 403                 }
 404                 else
 405 #endif
 406                 {
 407                     dataType = kHuge32BitData ;
 408                     maskType = kHuge8BitMask ;
 409                 }
 410                 break;
 411
 412             case 32:
 413 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 414                 if ( UMAGetSystemVersion() >= 0x1050 )
 415                 {
 416                     dataType = kIconServices32PixelDataARGB ;
 417                 }
 418                 else
 419 #endif
 420                 {
 421                     dataType = kLarge32BitData ;
 422                     maskType = kLarge8BitMask ;
 423                 }
 424                 break;
 425
 426             case 16:
 427 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 428                 if ( UMAGetSystemVersion() >= 0x1050 )
 429                 {
 430                     dataType = kIconServices16PixelDataARGB ;
 431                 }
 432                 else
 433 #endif
 434                 {
 435                     dataType = kSmall32BitData ;
 436                     maskType = kSmall8BitMask ;
 437                 }
 438                 break;
 439
 440             default:
 441                 break;
 442         }
 443
 444         if ( dataType != 0 )
 445         {
 446 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 447             if (  maskType == 0 && UMAGetSystemVersion() >= 0x1050 )
 448             {
 449                 size_t datasize = sz * sz * 4 ;
 450                 Handle data = NewHandle( datasize ) ;
 451                 HLock( data ) ;
 452                 unsigned char* ptr = (unsigned char*) *data ;
 453                 memset( ptr, 0, datasize );
 454                 bool hasAlpha = HasAlpha() ;
 455                 wxMask *mask = m_bitmapMask ;
 456                 unsigned char * sourcePtr = (unsigned char*) GetRawAccess() ;
 457                 unsigned char * masksourcePtr = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 458
 459                 for ( int y = 0 ; y < h ; ++y, sourcePtr += m_bytesPerRow , masksourcePtr += mask ? mask->GetBytesPerRow() : 0 )
 460                 {
 461                     unsigned char * source = sourcePtr;
 462                     unsigned char * masksource = masksourcePtr;
 463                     unsigned char * dest = ptr + y * sz * 4 ;
 464                     unsigned char a, r, g, b;
 465
 466                     for ( int x = 0 ; x < w ; ++x )
 467                     {
 468                         a = *source ++ ;
 469                         r = *source ++ ;
 470                         g = *source ++ ;
 471                         b = *source ++ ;
 472
 473                         if ( mask )
 474                         {
 475                             a = 0xFF - *masksource++ ;
 476                         }
 477                         else if ( !hasAlpha )
 478                             a = 0xFF ;
 479                         else
 480                         {
 481 #if wxOSX_USE_PREMULTIPLIED_ALPHA
 482                             // this must be non-premultiplied data
 483                             if ( a != 0xFF && a!= 0 )
 484                             {
 485                                 r = r * 255 / a;
 486                                 g = g * 255 / a;
 487                                 b = b * 255 / a;
 488                             }
 489 #endif
 490                         }
 491                         *dest++ = a ;
 492                         *dest++ = r ;
 493                         *dest++ = g ;
 494                         *dest++ = b ;
 495
 496                      }
 497                 }
 498                 HUnlock( data );
 499                 OSStatus err = SetIconFamilyData( iconFamily, dataType , data );
 500                 wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") );
 501                 DisposeHandle( data );
 502             }
 503             else
 504 #endif
 505             {
 506                 // setup the header properly
 507
 508                 Handle data = NULL ;
 509                 Handle maskdata = NULL ;
 510                 unsigned char * maskptr = NULL ;
 511                 unsigned char * ptr = NULL ;
 512                 size_t datasize, masksize ;
 513
 514                 datasize = sz * sz * 4 ;
 515                 data = NewHandle( datasize ) ;
 516                 HLock( data ) ;
 517                 ptr = (unsigned char*) *data ;
 518                 memset( ptr , 0, datasize ) ;
 519
 520                 masksize = sz * sz ;
 521                 maskdata = NewHandle( masksize ) ;
 522                 HLock( maskdata ) ;
 523                 maskptr = (unsigned char*) *maskdata ;
 524                 memset( maskptr , 0 , masksize ) ;
 525
 526                 bool hasAlpha = HasAlpha() ;
 527                 wxMask *mask = m_bitmapMask ;
 528                 unsigned char * sourcePtr = (unsigned char*) GetRawAccess() ;
 529                 unsigned char * masksourcePtr = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 530
 531                 for ( int y = 0 ; y < h ; ++y, sourcePtr += m_bytesPerRow , masksourcePtr += mask ? mask->GetBytesPerRow() : 0 )
 532                 {
 533                     unsigned char * source = sourcePtr;
 534                     unsigned char * masksource = masksourcePtr;
 535                     unsigned char * dest = ptr + y * sz * 4 ;
 536                     unsigned char * maskdest = maskptr + y * sz ;
 537                     unsigned char a, r, g, b;
 538
 539                     for ( int x = 0 ; x < w ; ++x )
 540                     {
 541                         a = *source ++ ;
 542                         r = *source ++ ;
 543                         g = *source ++ ;
 544                         b = *source ++ ;
 545
 546                         *dest++ = 0 ;
 547                         *dest++ = r ;
 548                         *dest++ = g ;
 549                         *dest++ = b ;
 550
 551                         if ( mask )
 552                             *maskdest++ = 0xFF - *masksource++ ;
 553                         else if ( hasAlpha )
 554                             *maskdest++ = a ;
 555                         else
 556                             *maskdest++ = 0xFF ;
 557                     }
 558                 }
 559
 560                 OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 561                 wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 562
 563                 err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 564                 wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 565
 566                 HUnlock( data ) ;
 567                 HUnlock( maskdata ) ;
 568                 DisposeHandle( data ) ;
 569                 DisposeHandle( maskdata ) ;
 570             }
 571         }
 572         else
 573         {
 574             PicHandle pic = GetPictHandle() ;
 575             SetIconFamilyData( iconFamily, 'PICT' , (Handle) pic ) ;
 576         }
 577         // transform into IconRef
 578
 579         // cleaner version existing from 10.3 upwards
 580         HLock((Handle) iconFamily);
 581         OSStatus err = GetIconRefFromIconFamilyPtr( *iconFamily, GetHandleSize((Handle) iconFamily), &m_iconRef );
 582         HUnlock((Handle) iconFamily);
 583         DisposeHandle( (Handle) iconFamily ) ;
 584
 585         wxCHECK_MSG( err == noErr, NULL, wxT("Error when constructing icon ref") );
 586     }
 587
 588     return m_iconRef ;
 589 }
 590
 591 PicHandle wxBitmapRefData::GetPictHandle()
 592 {
 593     if ( m_pictHandle == NULL )
 594     {
 595 #ifndef __LP64__
 596         GraphicsExportComponent exporter = 0;
 597         OSStatus err = OpenADefaultComponent(GraphicsExporterComponentType, kQTFileTypePicture, &exporter);
 598         if (noErr == err)
 599         {
 600             m_pictHandle = (PicHandle) NewHandle(0);
 601             if ( m_pictHandle )
 602             {
 603                 // QT does not correctly export the mask
 604                 // TODO if we get around to it create a synthetic PICT with the CopyBits and Mask commands
 605                 CGImageRef imageRef = CreateCGImage();
 606                 err = GraphicsExportSetInputCGImage( exporter, imageRef );
 607                 err = GraphicsExportSetOutputHandle(exporter, (Handle)m_pictHandle);
 608                 err = GraphicsExportDoExport(exporter, NULL);
 609                 CGImageRelease( imageRef );
 610
 611                 size_t handleSize = GetHandleSize( (Handle) m_pictHandle );
 612                 // the 512 bytes header is only needed for pict files, but not in memory
 613                 if ( handleSize >= 512 )
 614                 {
 615                     memmove( *m_pictHandle , (char*)(*m_pictHandle)+512, handleSize - 512 );
 616                     SetHandleSize( (Handle) m_pictHandle, handleSize - 512 );
 617                 }
 618             }
 619             CloseComponent( exporter );
 620         }
 621 #endif
 622     }
 623
 624     return m_pictHandle ;
 625 }
 626 #endif
 627
 628 CGImageRef wxBitmapRefData::CreateCGImage() const
 629 {
 630     wxASSERT( m_ok ) ;
 631     wxASSERT( m_rawAccessCount >= 0 ) ;
 632     CGImageRef image ;
 633     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 634     {
 635         if ( m_depth != 1 && m_bitmapMask == NULL )
 636         {
 637             if ( m_bitmapMask )
 638             {
 639                 CGImageRef tempImage = CGBitmapContextCreateImage( m_hBitmap );
 640                 CGImageRef tempMask = CGBitmapContextCreateImage((CGContextRef) m_bitmapMask->GetHBITMAP() );
 641                 image = CGImageCreateWithMask( tempImage, tempMask );
 642                 CGImageRelease(tempMask);
 643                 CGImageRelease(tempImage);
 644             }
 645             else
 646                 image = CGBitmapContextCreateImage( m_hBitmap );
 647         }
 648         else
 649         {
 650             size_t imageSize = m_height * m_bytesPerRow ;
 651             void * dataBuffer = m_memBuf.GetData() ;
 652             int w = m_width ;
 653             int h = m_height ;
 654             CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 655             wxMemoryBuffer membuf;
 656
 657             if ( m_bitmapMask )
 658             {
 659                 alphaInfo = kCGImageAlphaFirst ;
 660                 unsigned char *destalphastart = (unsigned char*) membuf.GetWriteBuf( imageSize ) ;
 661                 memcpy( destalphastart , dataBuffer , imageSize ) ;
 662                 unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 663                 int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 664                 for ( int y = 0 ; y < h ; ++y , destalphastart += m_bytesPerRow, sourcemaskstart += maskrowbytes)
 665                 {
 666                     unsigned char *sourcemask = sourcemaskstart ;
 667                     unsigned char *destalpha = destalphastart ;
 668                     for ( int x = 0 ; x < w ; ++x , sourcemask += kMaskBytesPerPixel , destalpha += 4 )
 669                     {
 670                         *destalpha = 0xFF - *sourcemask ;
 671                     }
 672                 }
 673                 membuf.UngetWriteBuf( imageSize );
 674             }
 675             else
 676             {
 677                 if ( m_hasAlpha )
 678                 {
 679 #if wxOSX_USE_PREMULTIPLIED_ALPHA
 680                     alphaInfo = kCGImageAlphaPremultipliedFirst ;
 681 #else
 682                     alphaInfo = kCGImageAlphaFirst ;
 683 #endif
 684                 }
 685
 686                 membuf = m_memBuf;
 687             }
 688
 689             CGDataProviderRef dataProvider = NULL ;
 690             if ( m_depth == 1 )
 691             {
 692                 // TODO CHECK ALIGNMENT
 693                 wxMemoryBuffer maskBuf;
 694                 unsigned char * maskBufData = (unsigned char*) maskBuf.GetWriteBuf( m_width * m_height );
 695                 unsigned char * bufData = (unsigned char *) membuf.GetData() ;
 696                 // copy one color component
 697                 size_t i = 0;
 698                 for( int y = 0 ; y < m_height ; bufData+= m_bytesPerRow, ++y )
 699                 {
 700                     unsigned char *bufDataIter = bufData+3;
 701                     for ( int x = 0 ; x < m_width ; bufDataIter += 4, ++x, ++i )
 702                     {
 703                         maskBufData[i] = *bufDataIter;
 704                     }
 705                 }
 706                 maskBuf.UngetWriteBuf( m_width * m_height );
 707
 708                 dataProvider =
 709                     wxMacCGDataProviderCreateWithMemoryBuffer( maskBuf );
 710
 711                 image = ::CGImageMaskCreate( w, h, 8, 8, m_width , dataProvider, NULL, false );
 712             }
 713             else
 714             {
 715                 CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 716                 dataProvider = wxMacCGDataProviderCreateWithMemoryBuffer( membuf );
 717                 image =
 718                     ::CGImageCreate(
 719                                     w, h, 8 , 32 , m_bytesPerRow , colorSpace, alphaInfo ,
 720                                     dataProvider, NULL , false , kCGRenderingIntentDefault );
 721             }
 722             CGDataProviderRelease( dataProvider);
 723         }
 724     }
 725     else
 726     {
 727         image = m_cgImageRef ;
 728         CGImageRetain( image ) ;
 729     }
 730
 731     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 732     {
 733         // we keep it for later use
 734         m_cgImageRef = image ;
 735         CGImageRetain( image ) ;
 736     }
 737
 738     return image ;
 739 }
 740
 741 CGContextRef wxBitmapRefData::GetBitmapContext() const
 742 {
 743     return m_hBitmap;
 744 }
 745
 746 void wxBitmapRefData::Free()
 747 {
 748     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 749
 750     if ( m_cgImageRef )
 751     {
 752         CGImageRelease( m_cgImageRef ) ;
 753         m_cgImageRef = NULL ;
 754     }
 755 #ifndef __WXOSX_IPHONE__
 756     if ( m_iconRef )
 757     {
 758         ReleaseIconRef( m_iconRef ) ;
 759         m_iconRef = NULL ;
 760     }
 761
 762 #ifndef __LP64__
 763     if ( m_pictHandle )
 764     {
 765         KillPicture( m_pictHandle ) ;
 766         m_pictHandle = NULL ;
 767     }
 768 #endif
 769 #endif
 770     if ( m_hBitmap )
 771     {
 772         CGContextRelease(m_hBitmap);
 773         m_hBitmap = NULL ;
 774     }
 775
 776     if (m_bitmapMask)
 777     {
 778         delete m_bitmapMask;
 779         m_bitmapMask = NULL;
 780     }
 781 }
 782
 783 wxBitmapRefData::~wxBitmapRefData()
 784 {
 785     Free() ;
 786 }
 787
 788
 789
 790 // ----------------------------------------------------------------------------
 791 // wxBitmap
 792 // ----------------------------------------------------------------------------
 793
 794 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 795 {
 796     bool created = false ;
 797     int w = icon.GetWidth() ;
 798     int h = icon.GetHeight() ;
 799
 800     Create( w , h ) ;
 801 #ifdef __WXOSX_CARBON__
 802     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 803     {
 804         IconFamilyHandle iconFamily = NULL ;
 805         Handle imagehandle = NewHandle( 0 ) ;
 806         Handle maskhandle = NewHandle( 0 ) ;
 807
 808         OSType maskType = 0;
 809         OSType dataType = 0;
 810         IconSelectorValue selector = 0 ;
 811
 812         switch (w)
 813         {
 814             case 128:
 815                 dataType = kThumbnail32BitData ;
 816                 maskType = kThumbnail8BitMask ;
 817                 selector = kSelectorAllAvailableData ;
 818                 break;
 819
 820             case 48:
 821                 dataType = kHuge32BitData ;
 822                 maskType = kHuge8BitMask ;
 823                 selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 824                 break;
 825
 826             case 32:
 827                 dataType = kLarge32BitData ;
 828                 maskType = kLarge8BitMask ;
 829                 selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 830                 break;
 831
 832             case 16:
 833                 dataType = kSmall32BitData ;
 834                 maskType = kSmall8BitMask ;
 835                 selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 836                 break;
 837
 838             default:
 839                 break;
 840         }
 841
 842         OSStatus err = IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ;
 843
 844         err = GetIconFamilyData( iconFamily , dataType , imagehandle ) ;
 845         err = GetIconFamilyData( iconFamily , maskType , maskhandle ) ;
 846         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 847         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 848
 849         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 850         {
 851             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 852             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 853
 854             UseAlpha() ;
 855
 856             unsigned char *source = (unsigned char *) *imagehandle ;
 857             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 858             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 859
 860             for ( int y = 0 ; y < h ; ++y )
 861             {
 862                 for ( int x = 0 ; x < w ; ++x )
 863                 {
 864                     unsigned char a = *sourcemask++;
 865                     *destination++ = a;
 866                     source++ ;
 867 #if wxOSX_USE_PREMULTIPLIED_ALPHA
 868                     *destination++ = ( (*source++) * a + 127 ) / 255;
 869                     *destination++ = ( (*source++) * a + 127 ) / 255;
 870                     *destination++ = ( (*source++) * a + 127 ) / 255;
 871 #else
 872                     *destination++ = *source++ ;
 873                     *destination++ = *source++ ;
 874                     *destination++ = *source++ ;
 875 #endif
 876                 }
 877             }
 878
 879             EndRawAccess() ;
 880             DisposeHandle( imagehandle ) ;
 881             DisposeHandle( maskhandle ) ;
 882             created = true ;
 883         }
 884
 885         DisposeHandle( (Handle) iconFamily ) ;
 886     }
 887 #endif
 888     if ( !created )
 889     {
 890         wxMemoryDC dc ;
 891         dc.SelectObject( *this ) ;
 892         dc.DrawIcon( icon , 0 , 0 ) ;
 893         dc.SelectObject( wxNullBitmap ) ;
 894     }
 895
 896     return true;
 897 }
 898
 899 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 900 {
 901     wxBitmapRefData* bitmapRefData;
 902
 903     m_refData = bitmapRefData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 904
 905     if (bitmapRefData->IsOk())
 906     {
 907         if ( no_bits == 1 )
 908         {
 909             int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 910             if ( the_width % (sizeof(unsigned char) * 8) )
 911                 linesize += sizeof(unsigned char);
 912
 913             unsigned char* linestart = (unsigned char*) bits ;
 914             unsigned char* destptr = (unsigned char*) BeginRawAccess() ;
 915
 916             for ( int y = 0 ; y < the_height ; ++y , linestart += linesize, destptr += M_BITMAPDATA->GetBytesPerRow() )
 917             {
 918                 unsigned char* destination = destptr;
 919                 int index, bit, mask;
 920
 921                 for ( int x = 0 ; x < the_width ; ++x )
 922                 {
 923                     index = x / 8 ;
 924                     bit = x % 8 ;
 925                     mask = 1 << bit ;
 926
 927                     if ( linestart[index] & mask )
 928                     {
 929                         *destination++ = 0xFF ;
 930                         *destination++ = 0 ;
 931                         *destination++ = 0 ;
 932                         *destination++ = 0 ;
 933                     }
 934                     else
 935                     {
 936                         *destination++ = 0xFF ;
 937                         *destination++ = 0xFF ;
 938                         *destination++ = 0xFF ;
 939                         *destination++ = 0xFF ;
 940                     }
 941                 }
 942             }
 943
 944             EndRawAccess() ;
 945         }
 946         else
 947         {
 948             wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 949         }
 950     } /* bitmapRefData->IsOk() */
 951 }
 952
 953 wxBitmap::wxBitmap(const void* data, wxBitmapType type, int width, int height, int depth)
 954 {
 955     (void) Create(data, type, width, height, depth);
 956 }
 957
 958 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 959 {
 960     LoadFile(filename, type);
 961 }
 962
 963 wxGDIRefData* wxBitmap::CreateGDIRefData() const
 964 {
 965     return new wxBitmapRefData;
 966 }
 967
 968 wxGDIRefData* wxBitmap::CloneGDIRefData(const wxGDIRefData* data) const
 969 {
 970     return new wxBitmapRefData(*static_cast<const wxBitmapRefData *>(data));
 971 }
 972
 973 void * wxBitmap::GetRawAccess() const
 974 {
 975     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 976
 977     return M_BITMAPDATA->GetRawAccess() ;
 978 }
 979
 980 void * wxBitmap::BeginRawAccess()
 981 {
 982     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 983
 984     return M_BITMAPDATA->BeginRawAccess() ;
 985 }
 986
 987 void wxBitmap::EndRawAccess()
 988 {
 989     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 990
 991     M_BITMAPDATA->EndRawAccess() ;
 992 }
 993
 994 CGImageRef wxBitmap::CreateCGImage() const
 995 {
 996     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 997
 998     return M_BITMAPDATA->CreateCGImage() ;
 999 }
1000
1001 #ifndef  __WXOSX_IPHONE__
1002 IconRef wxBitmap::GetIconRef() const
1003 {
1004     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
1005
1006     return M_BITMAPDATA->GetIconRef() ;
1007 }
1008
1009 IconRef wxBitmap::CreateIconRef() const
1010 {
1011     IconRef icon = GetIconRef();
1012     verify_noerr( AcquireIconRef(icon) );
1013     return icon;
1014 }
1015 #endif
1016
1017 #if wxOSX_USE_COCOA_OR_IPHONE
1018
1019 WX_NSImage wxBitmap::GetNSImage() const
1020 {
1021     wxCFRef< CGImageRef > cgimage(CreateCGImage());
1022     return wxOSXCreateNSImageFromCGImage( cgimage );
1023 }
1024
1025 #endif
1026
1027 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
1028 {
1029     wxCHECK_MSG( Ok() &&
1030                 (rect.x >= 0) && (rect.y >= 0) &&
1031                 (rect.x+rect.width <= GetWidth()) &&
1032                 (rect.y+rect.height <= GetHeight()),
1033                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
1034
1035     wxBitmap ret( rect.width, rect.height, GetDepth() );
1036     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
1037
1038     int destwidth = rect.width ;
1039     int destheight = rect.height ;
1040
1041     {
1042         unsigned char *sourcedata = (unsigned char*) GetRawAccess() ;
1043         unsigned char *destdata = (unsigned char*) ret.BeginRawAccess() ;
1044         wxASSERT( (sourcedata != NULL) && (destdata != NULL) ) ;
1045
1046         int sourcelinesize = GetBitmapData()->GetBytesPerRow() ;
1047         int destlinesize = ret.GetBitmapData()->GetBytesPerRow() ;
1048         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
1049         unsigned char *dest = destdata ;
1050
1051         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
1052         {
1053             memcpy( dest , source , destlinesize ) ;
1054         }
1055     }
1056
1057     ret.EndRawAccess() ;
1058
1059     if ( M_BITMAPDATA->m_bitmapMask )
1060     {
1061         wxMemoryBuffer maskbuf ;
1062         int rowBytes = GetBestBytesPerRow( destwidth * kMaskBytesPerPixel );
1063         size_t maskbufsize = rowBytes * destheight ;
1064
1065         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow() ;
1066         int destlinesize = rowBytes ;
1067
1068         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
1069         unsigned char *destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
1070         wxASSERT( (source != NULL) && (destdata != NULL) ) ;
1071
1072         source += rect.x * kMaskBytesPerPixel + rect.y * sourcelinesize ;
1073         unsigned char *dest = destdata ;
1074
1075         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
1076         {
1077             memcpy( dest , source , destlinesize ) ;
1078         }
1079
1080         maskbuf.UngetWriteBuf( maskbufsize ) ;
1081         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
1082     }
1083     else if ( HasAlpha() )
1084         ret.UseAlpha() ;
1085
1086     return ret;
1087 }
1088
1089 bool wxBitmap::Create(int w, int h, int d)
1090 {
1091     UnRef();
1092
1093     if ( d < 0 )
1094         d = wxDisplayDepth() ;
1095
1096     m_refData = new wxBitmapRefData( w , h , d );
1097
1098     return M_BITMAPDATA->IsOk() ;
1099 }
1100
1101 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
1102 {
1103     UnRef();
1104
1105     wxBitmapHandler *handler = FindHandler(type);
1106
1107     if ( handler )
1108     {
1109         m_refData = new wxBitmapRefData;
1110
1111         return handler->LoadFile(this, filename, type, -1, -1);
1112     }
1113     else
1114     {
1115 #if wxUSE_IMAGE
1116         wxImage loadimage(filename, type);
1117         if (loadimage.Ok())
1118         {
1119             *this = loadimage;
1120
1121             return true;
1122         }
1123 #endif
1124     }
1125
1126     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1127
1128     return false;
1129 }
1130
1131 bool wxBitmap::Create(const void* data, wxBitmapType type, int width, int height, int depth)
1132 {
1133     UnRef();
1134
1135     m_refData = new wxBitmapRefData;
1136
1137     wxBitmapHandler *handler = FindHandler(type);
1138
1139     if ( handler == NULL )
1140     {
1141         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1142
1143         return false;
1144     }
1145
1146     return handler->Create(this, data, type, width, height, depth);
1147 }
1148
1149 #if wxUSE_IMAGE
1150
1151 wxBitmap::wxBitmap(const wxImage& image, int depth)
1152 {
1153     wxCHECK_RET( image.Ok(), wxT("invalid image") );
1154
1155     // width and height of the device-dependent bitmap
1156     int width = image.GetWidth();
1157     int height = image.GetHeight();
1158
1159     wxBitmapRefData* bitmapRefData;
1160
1161     m_refData = bitmapRefData = new wxBitmapRefData( width , height , depth ) ;
1162
1163     if ( bitmapRefData->IsOk())
1164     {
1165         // Create picture
1166
1167         bool hasAlpha = false ;
1168
1169         if ( image.HasMask() )
1170         {
1171             // takes precedence, don't mix with alpha info
1172         }
1173         else
1174         {
1175             hasAlpha = image.HasAlpha() ;
1176         }
1177
1178         if ( hasAlpha )
1179             UseAlpha() ;
1180
1181         unsigned char* destinationstart = (unsigned char*) BeginRawAccess() ;
1182         register unsigned char* data = image.GetData();
1183         if ( destinationstart != NULL && data != NULL )
1184         {
1185             const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
1186             for (int y = 0; y < height; destinationstart += M_BITMAPDATA->GetBytesPerRow(), y++)
1187             {
1188                 unsigned char * destination = destinationstart;
1189                 for (int x = 0; x < width; x++)
1190                 {
1191                     if ( hasAlpha )
1192                     {
1193                         const unsigned char a = *alpha++;
1194                         *destination++ = a ;
1195
1196     #if wxOSX_USE_PREMULTIPLIED_ALPHA
1197                         *destination++ = ((*data++) * a + 127) / 255 ;
1198                         *destination++ = ((*data++) * a + 127) / 255 ;
1199                         *destination++ = ((*data++) * a + 127) / 255 ;
1200     #else
1201                         *destination++ = *data++ ;
1202                         *destination++ = *data++ ;
1203                         *destination++ = *data++ ;
1204     #endif
1205                     }
1206                     else
1207                     {
1208                         *destination++ = 0xFF ;
1209                         *destination++ = *data++ ;
1210                         *destination++ = *data++ ;
1211                         *destination++ = *data++ ;
1212                     }
1213                 }
1214             }
1215
1216             EndRawAccess() ;
1217         }
1218         if ( image.HasMask() )
1219             SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
1220     } /* bitmapRefData->IsOk() */
1221 }
1222
1223 wxImage wxBitmap::ConvertToImage() const
1224 {
1225     wxImage image;
1226
1227     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
1228
1229     // create an wxImage object
1230     int width = GetWidth();
1231     int height = GetHeight();
1232     image.Create( width, height );
1233
1234     unsigned char *data = image.GetData();
1235     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
1236
1237     unsigned char* sourcestart = (unsigned char*) GetRawAccess() ;
1238
1239     bool hasAlpha = false ;
1240     bool hasMask = false ;
1241     int maskBytesPerRow = 0 ;
1242     unsigned char *alpha = NULL ;
1243     unsigned char *mask = NULL ;
1244
1245     if ( HasAlpha() )
1246         hasAlpha = true ;
1247
1248     if ( GetMask() )
1249     {
1250         hasMask = true ;
1251         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1252         maskBytesPerRow = GetMask()->GetBytesPerRow() ;
1253     }
1254
1255     if ( hasAlpha )
1256     {
1257         image.SetAlpha() ;
1258         alpha = image.GetAlpha() ;
1259     }
1260
1261     int index = 0;
1262
1263     // The following masking algorithm is the same as well in msw/gtk:
1264     // the colour used as transparent one in wxImage and the one it is
1265     // replaced with when it actually occurs in the bitmap
1266     static const int MASK_RED = 1;
1267     static const int MASK_GREEN = 2;
1268     static const int MASK_BLUE = 3;
1269     static const int MASK_BLUE_REPLACEMENT = 2;
1270
1271     for (int yy = 0; yy < height; yy++ , sourcestart += M_BITMAPDATA->GetBytesPerRow() , mask += maskBytesPerRow )
1272     {
1273         unsigned char * maskp = mask ;
1274         unsigned char * source = sourcestart;
1275         unsigned char a, r, g, b;
1276         long color;
1277
1278         for (int xx = 0; xx < width; xx++)
1279         {
1280             color = *((long*) source) ;
1281 #ifdef WORDS_BIGENDIAN
1282             a = ((color&0xFF000000) >> 24) ;
1283             r = ((color&0x00FF0000) >> 16) ;
1284             g = ((color&0x0000FF00) >> 8) ;
1285             b = (color&0x000000FF);
1286 #else
1287             b = ((color&0xFF000000) >> 24) ;
1288             g = ((color&0x00FF0000) >> 16) ;
1289             r = ((color&0x0000FF00) >> 8) ;
1290             a = (color&0x000000FF);
1291 #endif
1292             if ( hasMask )
1293             {
1294                 if ( *maskp++ == 0xFF )
1295                 {
1296                     r = MASK_RED ;
1297                     g = MASK_GREEN ;
1298                     b = MASK_BLUE ;
1299                 }
1300                 else if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1301                     b = MASK_BLUE_REPLACEMENT ;
1302             }
1303             else if ( hasAlpha )
1304             {
1305                 *alpha++ = a ;
1306 #if wxOSX_USE_PREMULTIPLIED_ALPHA
1307                 // this must be non-premultiplied data
1308                 if ( a != 0xFF && a!= 0 )
1309                 {
1310                     r = r * 255 / a;
1311                     g = g * 255 / a;
1312                     b = b * 255 / a;
1313                 }
1314 #endif
1315             }
1316
1317             data[index    ] = r ;
1318             data[index + 1] = g ;
1319             data[index + 2] = b ;
1320
1321             index += 3;
1322             source += 4 ;
1323         }
1324     }
1325
1326     if ( hasMask )
1327         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1328
1329     return image;
1330 }
1331
1332 #endif //wxUSE_IMAGE
1333
1334 bool wxBitmap::SaveFile( const wxString& filename,
1335     wxBitmapType type, const wxPalette *palette ) const
1336 {
1337     bool success = false;
1338     wxBitmapHandler *handler = FindHandler(type);
1339
1340     if ( handler )
1341     {
1342         success = handler->SaveFile(this, filename, type, palette);
1343     }
1344     else
1345     {
1346 #if wxUSE_IMAGE
1347         wxImage image = ConvertToImage();
1348         success = image.SaveFile(filename, type);
1349 #else
1350         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1351 #endif
1352     }
1353
1354     return success;
1355 }
1356
1357 int wxBitmap::GetHeight() const
1358 {
1359    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1360
1361    return M_BITMAPDATA->GetHeight();
1362 }
1363
1364 int wxBitmap::GetWidth() const
1365 {
1366    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1367
1368    return M_BITMAPDATA->GetWidth() ;
1369 }
1370
1371 int wxBitmap::GetDepth() const
1372 {
1373    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1374
1375    return M_BITMAPDATA->GetDepth();
1376 }
1377
1378 wxMask *wxBitmap::GetMask() const
1379 {
1380    wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
1381
1382    return M_BITMAPDATA->m_bitmapMask;
1383 }
1384
1385 bool wxBitmap::HasAlpha() const
1386 {
1387    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1388
1389    return M_BITMAPDATA->HasAlpha() ;
1390 }
1391
1392 void wxBitmap::SetWidth(int w)
1393 {
1394     AllocExclusive();
1395     M_BITMAPDATA->SetWidth(w);
1396 }
1397
1398 void wxBitmap::SetHeight(int h)
1399 {
1400     AllocExclusive();
1401     M_BITMAPDATA->SetHeight(h);
1402 }
1403
1404 void wxBitmap::SetDepth(int d)
1405 {
1406     AllocExclusive();
1407     M_BITMAPDATA->SetDepth(d);
1408 }
1409
1410 void wxBitmap::SetOk(bool isOk)
1411 {
1412     AllocExclusive();
1413     M_BITMAPDATA->SetOk(isOk);
1414 }
1415
1416 #if wxUSE_PALETTE
1417 wxPalette *wxBitmap::GetPalette() const
1418 {
1419    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1420
1421    return &M_BITMAPDATA->m_bitmapPalette;
1422 }
1423
1424 void wxBitmap::SetPalette(const wxPalette& palette)
1425 {
1426     AllocExclusive();
1427     M_BITMAPDATA->m_bitmapPalette = palette ;
1428 }
1429 #endif // wxUSE_PALETTE
1430
1431 void wxBitmap::SetMask(wxMask *mask)
1432 {
1433     AllocExclusive();
1434     // Remove existing mask if there is one.
1435     delete M_BITMAPDATA->m_bitmapMask;
1436
1437     M_BITMAPDATA->m_bitmapMask = mask ;
1438 }
1439
1440 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1441 {
1442     wxUnusedVar(mask);
1443
1444     return WXHBITMAP(M_BITMAPDATA->GetBitmapContext());
1445 }
1446
1447 // ----------------------------------------------------------------------------
1448 // wxMask
1449 // ----------------------------------------------------------------------------
1450
1451 wxMask::wxMask()
1452 {
1453     Init() ;
1454 }
1455
1456 wxMask::wxMask(const wxMask &tocopy)
1457 {
1458     Init();
1459
1460     m_bytesPerRow = tocopy.m_bytesPerRow;
1461     m_width = tocopy.m_width;
1462     m_height = tocopy.m_height;
1463
1464     size_t size = m_bytesPerRow * m_height;
1465     unsigned char* dest = (unsigned char*)m_memBuf.GetWriteBuf( size );
1466     unsigned char* source = (unsigned char*)tocopy.m_memBuf.GetData();
1467     memcpy( dest, source, size );
1468     m_memBuf.UngetWriteBuf( size ) ;
1469     RealizeNative() ;
1470 }
1471
1472 // Construct a mask from a bitmap and a colour indicating
1473 // the transparent area
1474 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
1475 {
1476     Init() ;
1477     Create( bitmap, colour );
1478 }
1479
1480 // Construct a mask from a mono bitmap (copies the bitmap).
1481 wxMask::wxMask( const wxBitmap& bitmap )
1482 {
1483     Init() ;
1484     Create( bitmap );
1485 }
1486
1487 // Construct a mask from a mono bitmap (copies the bitmap).
1488
1489 wxMask::wxMask( const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1490 {
1491     Init() ;
1492     Create( data, width , height , bytesPerRow );
1493 }
1494
1495 wxMask::~wxMask()
1496 {
1497     if ( m_maskBitmap )
1498     {
1499         CGContextRelease( (CGContextRef) m_maskBitmap );
1500         m_maskBitmap = NULL ;
1501     }
1502 }
1503
1504 void wxMask::Init()
1505 {
1506     m_width = m_height = m_bytesPerRow = 0 ;
1507     m_maskBitmap = NULL ;
1508 }
1509
1510 void *wxMask::GetRawAccess() const
1511 {
1512     return m_memBuf.GetData() ;
1513 }
1514
1515 // The default ColorTable for k8IndexedGrayPixelFormat in Intel appears to be broken, so we'll use an non-indexed
1516 // bitmap mask instead; in order to keep the code simple, the change applies to PowerPC implementations as well
1517
1518 void wxMask::RealizeNative()
1519 {
1520     if ( m_maskBitmap )
1521     {
1522         CGContextRelease( (CGContextRef) m_maskBitmap );
1523        m_maskBitmap = NULL ;
1524     }
1525
1526     CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceGray();
1527     // from MouseTracking sample :
1528     // Ironically, due to a bug in CGImageCreateWithMask, you cannot use
1529     // CGColorSpaceCreateWithName(kCGColorSpaceGenericGray) at this point!
1530
1531     m_maskBitmap = CGBitmapContextCreate((char*) m_memBuf.GetData(), m_width, m_height, 8, m_bytesPerRow, colorspace,
1532         kCGImageAlphaNone );
1533     CGColorSpaceRelease( colorspace );
1534     wxASSERT_MSG( m_maskBitmap , wxT("Unable to create CGBitmapContext context") ) ;
1535 }
1536
1537 // Create a mask from a mono bitmap (copies the bitmap).
1538
1539 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1540 {
1541     m_memBuf = data ;
1542     m_width = width ;
1543     m_height = height ;
1544     m_bytesPerRow = bytesPerRow ;
1545
1546     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1547
1548     RealizeNative() ;
1549
1550     return true ;
1551 }
1552
1553 // Create a mask from a mono bitmap (copies the bitmap).
1554 bool wxMask::Create(const wxBitmap& bitmap)
1555 {
1556     m_width = bitmap.GetWidth() ;
1557     m_height = bitmap.GetHeight() ;
1558     m_bytesPerRow = GetBestBytesPerRow( m_width * kMaskBytesPerPixel ) ;
1559
1560     size_t size = m_bytesPerRow * m_height ;
1561     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1562     wxASSERT( destdatabase != NULL ) ;
1563
1564     memset( destdatabase , 0 , size ) ;
1565     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1566
1567     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1568     {
1569         unsigned char *destdata = destdatabase ;
1570         unsigned char r, g, b;
1571
1572         for ( int x = 0 ; x < m_width ; ++x )
1573         {
1574             srcdata++ ;
1575             r = *srcdata++ ;
1576             g = *srcdata++ ;
1577             b = *srcdata++ ;
1578
1579             if ( ( r + g + b ) > 0x10 )
1580                 *destdata++ = 0xFF ;
1581             else
1582                 *destdata++ = 0x00 ;
1583         }
1584     }
1585
1586     m_memBuf.UngetWriteBuf( size ) ;
1587     RealizeNative() ;
1588
1589     return true;
1590 }
1591
1592 // Create a mask from a bitmap and a colour indicating
1593 // the transparent area
1594 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1595 {
1596     m_width = bitmap.GetWidth() ;
1597     m_height = bitmap.GetHeight() ;
1598     m_bytesPerRow = GetBestBytesPerRow( m_width * kMaskBytesPerPixel ) ;
1599
1600     size_t size = m_bytesPerRow * m_height ;
1601     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1602     wxASSERT( destdatabase != NULL ) ;
1603
1604     memset( destdatabase , 0 , size ) ;
1605     unsigned char * srcdatabase = (unsigned char*) bitmap.GetRawAccess() ;
1606     size_t sourceBytesRow = bitmap.GetBitmapData()->GetBytesPerRow();
1607
1608     for ( int y = 0 ; y < m_height ; ++y , srcdatabase+= sourceBytesRow, destdatabase += m_bytesPerRow)
1609     {
1610         unsigned char *srcdata = srcdatabase ;
1611         unsigned char *destdata = destdatabase ;
1612         unsigned char r, g, b;
1613
1614         for ( int x = 0 ; x < m_width ; ++x )
1615         {
1616             srcdata++ ;
1617             r = *srcdata++ ;
1618             g = *srcdata++ ;
1619             b = *srcdata++ ;
1620
1621             if ( colour == wxColour( r , g , b ) )
1622                 *destdata++ = 0xFF ;
1623             else
1624                 *destdata++ = 0x00 ;
1625         }
1626     }
1627
1628     m_memBuf.UngetWriteBuf( size ) ;
1629     RealizeNative() ;
1630
1631     return true;
1632 }
1633
1634 WXHBITMAP wxMask::GetHBITMAP() const
1635 {
1636     return m_maskBitmap ;
1637 }
1638
1639 // ----------------------------------------------------------------------------
1640 // Standard Handlers
1641 // ----------------------------------------------------------------------------
1642
1643 #if !defined( __LP64__ ) && !defined(__WXOSX_IPHONE__)
1644
1645 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1646 {
1647     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1648
1649 public:
1650     inline wxPICTResourceHandler()
1651     {
1652         SetName(wxT("Macintosh Pict resource"));
1653         SetExtension(wxEmptyString);
1654         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1655     };
1656
1657     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1658           int desiredWidth, int desiredHeight);
1659 };
1660
1661 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1662
1663
1664 bool wxPICTResourceHandler::LoadFile(wxBitmap *bitmap,
1665                                      const wxString& name,
1666                                      long WXUNUSED(flags),
1667                                      int WXUNUSED(desiredWidth),
1668                                      int WXUNUSED(desiredHeight))
1669 {
1670 #if wxUSE_METAFILE
1671     Str255 theName ;
1672     wxMacStringToPascal( name , theName ) ;
1673
1674     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1675     if ( thePict )
1676     {
1677         wxMetafile mf ;
1678
1679         mf.SetPICT( thePict ) ;
1680         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1681         wxMemoryDC dc ;
1682         dc.SelectObject( *bitmap ) ;
1683         mf.Play( &dc ) ;
1684         dc.SelectObject( wxNullBitmap ) ;
1685
1686         return true ;
1687     }
1688 #endif
1689
1690     return false ;
1691 }
1692 #endif
1693
1694 void wxBitmap::InitStandardHandlers()
1695 {
1696 #if !defined( __LP64__ ) && !defined(__WXOSX_IPHONE__)
1697     AddHandler( new wxPICTResourceHandler ) ;
1698 #endif
1699 #if wxOSX_USE_CARBON
1700     AddHandler( new wxICONResourceHandler ) ;
1701 #endif
1702 }
1703
1704 // ----------------------------------------------------------------------------
1705 // raw bitmap access support
1706 // ----------------------------------------------------------------------------
1707
1708 void *wxBitmap::GetRawData(wxPixelDataBase& data, int WXUNUSED(bpp))
1709 {
1710     if ( !Ok() )
1711         // no bitmap, no data (raw or otherwise)
1712         return NULL;
1713
1714     data.m_width = GetWidth() ;
1715     data.m_height = GetHeight() ;
1716     data.m_stride = GetBitmapData()->GetBytesPerRow() ;
1717
1718     return BeginRawAccess() ;
1719 }
1720
1721 void wxBitmap::UngetRawData(wxPixelDataBase& WXUNUSED(dataBase))
1722 {
1723     EndRawAccess() ;
1724 }
1725
1726 void wxBitmap::UseAlpha()
1727 {
1728     // remember that we are using alpha channel:
1729     // we'll need to create a proper mask in UngetRawData()
1730     M_BITMAPDATA->UseAlpha( true );
1731 }