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 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 789 {
 790     bool created = false ;
 791     int w = icon.GetWidth() ;
 792     int h = icon.GetHeight() ;
 793
 794     Create( w , h ) ;
 795 #ifdef __WXOSX_CARBON__
 796     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 797     {
 798         IconFamilyHandle iconFamily = NULL ;
 799         Handle imagehandle = NewHandle( 0 ) ;
 800         Handle maskhandle = NewHandle( 0 ) ;
 801
 802         OSType maskType = 0;
 803         OSType dataType = 0;
 804         IconSelectorValue selector = 0 ;
 805
 806         switch (w)
 807         {
 808             case 128:
 809                 dataType = kThumbnail32BitData ;
 810                 maskType = kThumbnail8BitMask ;
 811                 selector = kSelectorAllAvailableData ;
 812                 break;
 813
 814             case 48:
 815                 dataType = kHuge32BitData ;
 816                 maskType = kHuge8BitMask ;
 817                 selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 818                 break;
 819
 820             case 32:
 821                 dataType = kLarge32BitData ;
 822                 maskType = kLarge8BitMask ;
 823                 selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 824                 break;
 825
 826             case 16:
 827                 dataType = kSmall32BitData ;
 828                 maskType = kSmall8BitMask ;
 829                 selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 830                 break;
 831
 832             default:
 833                 break;
 834         }
 835
 836         OSStatus err = IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ;
 837
 838         err = GetIconFamilyData( iconFamily , dataType , imagehandle ) ;
 839         err = GetIconFamilyData( iconFamily , maskType , maskhandle ) ;
 840         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 841         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 842
 843         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 844         {
 845             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 846             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 847
 848             UseAlpha() ;
 849
 850             unsigned char *source = (unsigned char *) *imagehandle ;
 851             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 852             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 853
 854             for ( int y = 0 ; y < h ; ++y )
 855             {
 856                 for ( int x = 0 ; x < w ; ++x )
 857                 {
 858                     unsigned char a = *sourcemask++;
 859                     *destination++ = a;
 860                     source++ ;
 861 #if wxOSX_USE_PREMULTIPLIED_ALPHA
 862                     *destination++ = ( (*source++) * a + 127 ) / 255;
 863                     *destination++ = ( (*source++) * a + 127 ) / 255;
 864                     *destination++ = ( (*source++) * a + 127 ) / 255;
 865 #else
 866                     *destination++ = *source++ ;
 867                     *destination++ = *source++ ;
 868                     *destination++ = *source++ ;
 869 #endif
 870                 }
 871             }
 872
 873             EndRawAccess() ;
 874             DisposeHandle( imagehandle ) ;
 875             DisposeHandle( maskhandle ) ;
 876             created = true ;
 877         }
 878
 879         DisposeHandle( (Handle) iconFamily ) ;
 880     }
 881 #endif
 882     if ( !created )
 883     {
 884         wxMemoryDC dc ;
 885         dc.SelectObject( *this ) ;
 886         dc.DrawIcon( icon , 0 , 0 ) ;
 887         dc.SelectObject( wxNullBitmap ) ;
 888     }
 889
 890     return true;
 891 }
 892
 893 wxBitmap::wxBitmap()
 894 {
 895 }
 896
 897 wxBitmap::~wxBitmap()
 898 {
 899 }
 900
 901 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 902 {
 903     wxBitmapRefData* bitmapRefData;
 904
 905     m_refData = bitmapRefData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 906
 907     if (bitmapRefData->IsOk())
 908     {
 909         if ( no_bits == 1 )
 910         {
 911             int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 912             if ( the_width % (sizeof(unsigned char) * 8) )
 913                 linesize += sizeof(unsigned char);
 914
 915             unsigned char* linestart = (unsigned char*) bits ;
 916             unsigned char* destptr = (unsigned char*) BeginRawAccess() ;
 917
 918             for ( int y = 0 ; y < the_height ; ++y , linestart += linesize, destptr += M_BITMAPDATA->GetBytesPerRow() )
 919             {
 920                 unsigned char* destination = destptr;
 921                 int index, bit, mask;
 922
 923                 for ( int x = 0 ; x < the_width ; ++x )
 924                 {
 925                     index = x / 8 ;
 926                     bit = x % 8 ;
 927                     mask = 1 << bit ;
 928
 929                     if ( linestart[index] & mask )
 930                     {
 931                         *destination++ = 0xFF ;
 932                         *destination++ = 0 ;
 933                         *destination++ = 0 ;
 934                         *destination++ = 0 ;
 935                     }
 936                     else
 937                     {
 938                         *destination++ = 0xFF ;
 939                         *destination++ = 0xFF ;
 940                         *destination++ = 0xFF ;
 941                         *destination++ = 0xFF ;
 942                     }
 943                 }
 944             }
 945
 946             EndRawAccess() ;
 947         }
 948         else
 949         {
 950             wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 951         }
 952     } /* bitmapRefData->IsOk() */
 953 }
 954
 955 wxBitmap::wxBitmap(int w, int h, int d)
 956 {
 957     (void)Create(w, h, d);
 958 }
 959
 960 wxBitmap::wxBitmap(const void* data, wxBitmapType type, int width, int height, int depth)
 961 {
 962     (void) Create(data, type, width, height, depth);
 963 }
 964
 965 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 966 {
 967     LoadFile(filename, type);
 968 }
 969
 970 wxGDIRefData* wxBitmap::CreateGDIRefData() const
 971 {
 972     return new wxBitmapRefData;
 973 }
 974
 975 wxGDIRefData* wxBitmap::CloneGDIRefData(const wxGDIRefData* data) const
 976 {
 977     return new wxBitmapRefData(*static_cast<const wxBitmapRefData *>(data));
 978 }
 979
 980 void * wxBitmap::GetRawAccess() const
 981 {
 982     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 983
 984     return M_BITMAPDATA->GetRawAccess() ;
 985 }
 986
 987 void * wxBitmap::BeginRawAccess()
 988 {
 989     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 990
 991     return M_BITMAPDATA->BeginRawAccess() ;
 992 }
 993
 994 void wxBitmap::EndRawAccess()
 995 {
 996     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 997
 998     M_BITMAPDATA->EndRawAccess() ;
 999 }
1000
1001 CGImageRef wxBitmap::CreateCGImage() const
1002 {
1003     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
1004
1005     return M_BITMAPDATA->CreateCGImage() ;
1006 }
1007
1008 #ifndef  __WXOSX_IPHONE__
1009 IconRef wxBitmap::GetIconRef() const
1010 {
1011     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
1012
1013     return M_BITMAPDATA->GetIconRef() ;
1014 }
1015
1016 IconRef wxBitmap::CreateIconRef() const
1017 {
1018     IconRef icon = GetIconRef();
1019     verify_noerr( AcquireIconRef(icon) );
1020     return icon;
1021 }
1022 #endif
1023
1024 #if wxOSX_USE_COCOA_OR_IPHONE
1025
1026 WX_NSImage wxBitmap::GetNSImage() const
1027 {
1028     wxCFRef< CGImageRef > cgimage(CreateCGImage());
1029     return wxOSXCreateNSImageFromCGImage( cgimage );
1030 }
1031
1032 #endif
1033
1034 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
1035 {
1036     wxCHECK_MSG( Ok() &&
1037                 (rect.x >= 0) && (rect.y >= 0) &&
1038                 (rect.x+rect.width <= GetWidth()) &&
1039                 (rect.y+rect.height <= GetHeight()),
1040                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
1041
1042     wxBitmap ret( rect.width, rect.height, GetDepth() );
1043     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
1044
1045     int destwidth = rect.width ;
1046     int destheight = rect.height ;
1047
1048     {
1049         unsigned char *sourcedata = (unsigned char*) GetRawAccess() ;
1050         unsigned char *destdata = (unsigned char*) ret.BeginRawAccess() ;
1051         wxASSERT( (sourcedata != NULL) && (destdata != NULL) ) ;
1052
1053         int sourcelinesize = GetBitmapData()->GetBytesPerRow() ;
1054         int destlinesize = ret.GetBitmapData()->GetBytesPerRow() ;
1055         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
1056         unsigned char *dest = destdata ;
1057
1058         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
1059         {
1060             memcpy( dest , source , destlinesize ) ;
1061         }
1062     }
1063
1064     ret.EndRawAccess() ;
1065
1066     if ( M_BITMAPDATA->m_bitmapMask )
1067     {
1068         wxMemoryBuffer maskbuf ;
1069         int rowBytes = GetBestBytesPerRow( destwidth * kMaskBytesPerPixel );
1070         size_t maskbufsize = rowBytes * destheight ;
1071
1072         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow() ;
1073         int destlinesize = rowBytes ;
1074
1075         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
1076         unsigned char *destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
1077         wxASSERT( (source != NULL) && (destdata != NULL) ) ;
1078
1079         source += rect.x * kMaskBytesPerPixel + rect.y * sourcelinesize ;
1080         unsigned char *dest = destdata ;
1081
1082         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
1083         {
1084             memcpy( dest , source , destlinesize ) ;
1085         }
1086
1087         maskbuf.UngetWriteBuf( maskbufsize ) ;
1088         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
1089     }
1090     else if ( HasAlpha() )
1091         ret.UseAlpha() ;
1092
1093     return ret;
1094 }
1095
1096 bool wxBitmap::Create(int w, int h, int d)
1097 {
1098     UnRef();
1099
1100     if ( d < 0 )
1101         d = wxDisplayDepth() ;
1102
1103     m_refData = new wxBitmapRefData( w , h , d );
1104
1105     return M_BITMAPDATA->IsOk() ;
1106 }
1107
1108 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
1109 {
1110     UnRef();
1111
1112     wxBitmapHandler *handler = FindHandler(type);
1113
1114     if ( handler )
1115     {
1116         m_refData = new wxBitmapRefData;
1117
1118         return handler->LoadFile(this, filename, type, -1, -1);
1119     }
1120     else
1121     {
1122 #if wxUSE_IMAGE
1123         wxImage loadimage(filename, type);
1124         if (loadimage.Ok())
1125         {
1126             *this = loadimage;
1127
1128             return true;
1129         }
1130 #endif
1131     }
1132
1133     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1134
1135     return false;
1136 }
1137
1138 bool wxBitmap::Create(const void* data, wxBitmapType type, int width, int height, int depth)
1139 {
1140     UnRef();
1141
1142     m_refData = new wxBitmapRefData;
1143
1144     wxBitmapHandler *handler = FindHandler(type);
1145
1146     if ( handler == NULL )
1147     {
1148         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1149
1150         return false;
1151     }
1152
1153     return handler->Create(this, data, type, width, height, depth);
1154 }
1155
1156 #if wxUSE_IMAGE
1157
1158 wxBitmap::wxBitmap(const wxImage& image, int depth)
1159 {
1160     wxCHECK_RET( image.Ok(), wxT("invalid image") );
1161
1162     // width and height of the device-dependent bitmap
1163     int width = image.GetWidth();
1164     int height = image.GetHeight();
1165
1166     wxBitmapRefData* bitmapRefData;
1167
1168     m_refData = bitmapRefData = new wxBitmapRefData( width , height , depth ) ;
1169
1170     if ( bitmapRefData->IsOk())
1171     {
1172         // Create picture
1173
1174         bool hasAlpha = false ;
1175
1176         if ( image.HasMask() )
1177         {
1178             // takes precedence, don't mix with alpha info
1179         }
1180         else
1181         {
1182             hasAlpha = image.HasAlpha() ;
1183         }
1184
1185         if ( hasAlpha )
1186             UseAlpha() ;
1187
1188         unsigned char* destinationstart = (unsigned char*) BeginRawAccess() ;
1189         register unsigned char* data = image.GetData();
1190         if ( destinationstart != NULL && data != NULL )
1191         {
1192             const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
1193             for (int y = 0; y < height; destinationstart += M_BITMAPDATA->GetBytesPerRow(), y++)
1194             {
1195                 unsigned char * destination = destinationstart;
1196                 for (int x = 0; x < width; x++)
1197                 {
1198                     if ( hasAlpha )
1199                     {
1200                         const unsigned char a = *alpha++;
1201                         *destination++ = a ;
1202
1203     #if wxOSX_USE_PREMULTIPLIED_ALPHA
1204                         *destination++ = ((*data++) * a + 127) / 255 ;
1205                         *destination++ = ((*data++) * a + 127) / 255 ;
1206                         *destination++ = ((*data++) * a + 127) / 255 ;
1207     #else
1208                         *destination++ = *data++ ;
1209                         *destination++ = *data++ ;
1210                         *destination++ = *data++ ;
1211     #endif
1212                     }
1213                     else
1214                     {
1215                         *destination++ = 0xFF ;
1216                         *destination++ = *data++ ;
1217                         *destination++ = *data++ ;
1218                         *destination++ = *data++ ;
1219                     }
1220                 }
1221             }
1222
1223             EndRawAccess() ;
1224         }
1225         if ( image.HasMask() )
1226             SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
1227     } /* bitmapRefData->IsOk() */
1228 }
1229
1230 wxImage wxBitmap::ConvertToImage() const
1231 {
1232     wxImage image;
1233
1234     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
1235
1236     // create an wxImage object
1237     int width = GetWidth();
1238     int height = GetHeight();
1239     image.Create( width, height );
1240
1241     unsigned char *data = image.GetData();
1242     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
1243
1244     unsigned char* sourcestart = (unsigned char*) GetRawAccess() ;
1245
1246     bool hasAlpha = false ;
1247     bool hasMask = false ;
1248     int maskBytesPerRow = 0 ;
1249     unsigned char *alpha = NULL ;
1250     unsigned char *mask = NULL ;
1251
1252     if ( HasAlpha() )
1253         hasAlpha = true ;
1254
1255     if ( GetMask() )
1256     {
1257         hasMask = true ;
1258         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1259         maskBytesPerRow = GetMask()->GetBytesPerRow() ;
1260     }
1261
1262     if ( hasAlpha )
1263     {
1264         image.SetAlpha() ;
1265         alpha = image.GetAlpha() ;
1266     }
1267
1268     int index = 0;
1269
1270     // The following masking algorithm is the same as well in msw/gtk:
1271     // the colour used as transparent one in wxImage and the one it is
1272     // replaced with when it actually occurs in the bitmap
1273     static const int MASK_RED = 1;
1274     static const int MASK_GREEN = 2;
1275     static const int MASK_BLUE = 3;
1276     static const int MASK_BLUE_REPLACEMENT = 2;
1277
1278     for (int yy = 0; yy < height; yy++ , sourcestart += M_BITMAPDATA->GetBytesPerRow() , mask += maskBytesPerRow )
1279     {
1280         unsigned char * maskp = mask ;
1281         unsigned char * source = sourcestart;
1282         unsigned char a, r, g, b;
1283         long color;
1284
1285         for (int xx = 0; xx < width; xx++)
1286         {
1287             color = *((long*) source) ;
1288 #ifdef WORDS_BIGENDIAN
1289             a = ((color&0xFF000000) >> 24) ;
1290             r = ((color&0x00FF0000) >> 16) ;
1291             g = ((color&0x0000FF00) >> 8) ;
1292             b = (color&0x000000FF);
1293 #else
1294             b = ((color&0xFF000000) >> 24) ;
1295             g = ((color&0x00FF0000) >> 16) ;
1296             r = ((color&0x0000FF00) >> 8) ;
1297             a = (color&0x000000FF);
1298 #endif
1299             if ( hasMask )
1300             {
1301                 if ( *maskp++ == 0xFF )
1302                 {
1303                     r = MASK_RED ;
1304                     g = MASK_GREEN ;
1305                     b = MASK_BLUE ;
1306                 }
1307                 else if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1308                     b = MASK_BLUE_REPLACEMENT ;
1309             }
1310             else if ( hasAlpha )
1311             {
1312                 *alpha++ = a ;
1313 #if wxOSX_USE_PREMULTIPLIED_ALPHA
1314                 // this must be non-premultiplied data
1315                 if ( a != 0xFF && a!= 0 )
1316                 {
1317                     r = r * 255 / a;
1318                     g = g * 255 / a;
1319                     b = b * 255 / a;
1320                 }
1321 #endif
1322             }
1323
1324             data[index    ] = r ;
1325             data[index + 1] = g ;
1326             data[index + 2] = b ;
1327
1328             index += 3;
1329             source += 4 ;
1330         }
1331     }
1332
1333     if ( hasMask )
1334         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1335
1336     return image;
1337 }
1338
1339 #endif //wxUSE_IMAGE
1340
1341 bool wxBitmap::SaveFile( const wxString& filename,
1342     wxBitmapType type, const wxPalette *palette ) const
1343 {
1344     bool success = false;
1345     wxBitmapHandler *handler = FindHandler(type);
1346
1347     if ( handler )
1348     {
1349         success = handler->SaveFile(this, filename, type, palette);
1350     }
1351     else
1352     {
1353 #if wxUSE_IMAGE
1354         wxImage image = ConvertToImage();
1355         success = image.SaveFile(filename, type);
1356 #else
1357         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1358 #endif
1359     }
1360
1361     return success;
1362 }
1363
1364 int wxBitmap::GetHeight() const
1365 {
1366    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1367
1368    return M_BITMAPDATA->GetHeight();
1369 }
1370
1371 int wxBitmap::GetWidth() const
1372 {
1373    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1374
1375    return M_BITMAPDATA->GetWidth() ;
1376 }
1377
1378 int wxBitmap::GetDepth() const
1379 {
1380    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1381
1382    return M_BITMAPDATA->GetDepth();
1383 }
1384
1385 wxMask *wxBitmap::GetMask() const
1386 {
1387    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1388
1389    return M_BITMAPDATA->m_bitmapMask;
1390 }
1391
1392 bool wxBitmap::HasAlpha() const
1393 {
1394    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1395
1396    return M_BITMAPDATA->HasAlpha() ;
1397 }
1398
1399 void wxBitmap::SetWidth(int w)
1400 {
1401     AllocExclusive();
1402     M_BITMAPDATA->SetWidth(w);
1403 }
1404
1405 void wxBitmap::SetHeight(int h)
1406 {
1407     AllocExclusive();
1408     M_BITMAPDATA->SetHeight(h);
1409 }
1410
1411 void wxBitmap::SetDepth(int d)
1412 {
1413     AllocExclusive();
1414     M_BITMAPDATA->SetDepth(d);
1415 }
1416
1417 void wxBitmap::SetOk(bool isOk)
1418 {
1419     AllocExclusive();
1420     M_BITMAPDATA->SetOk(isOk);
1421 }
1422
1423 #if wxUSE_PALETTE
1424 wxPalette *wxBitmap::GetPalette() const
1425 {
1426    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1427
1428    return &M_BITMAPDATA->m_bitmapPalette;
1429 }
1430
1431 void wxBitmap::SetPalette(const wxPalette& palette)
1432 {
1433     AllocExclusive();
1434     M_BITMAPDATA->m_bitmapPalette = palette ;
1435 }
1436 #endif // wxUSE_PALETTE
1437
1438 void wxBitmap::SetMask(wxMask *mask)
1439 {
1440     AllocExclusive();
1441     // Remove existing mask if there is one.
1442     delete M_BITMAPDATA->m_bitmapMask;
1443
1444     M_BITMAPDATA->m_bitmapMask = mask ;
1445 }
1446
1447 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1448 {
1449     wxUnusedVar(mask);
1450
1451     return WXHBITMAP(M_BITMAPDATA->GetBitmapContext());
1452 }
1453
1454 // ----------------------------------------------------------------------------
1455 // wxMask
1456 // ----------------------------------------------------------------------------
1457
1458 wxMask::wxMask()
1459 {
1460     Init() ;
1461 }
1462
1463 wxMask::wxMask(const wxMask &tocopy)
1464 {
1465     Init();
1466
1467     m_bytesPerRow = tocopy.m_bytesPerRow;
1468     m_width = tocopy.m_width;
1469     m_height = tocopy.m_height;
1470
1471     size_t size = m_bytesPerRow * m_height;
1472     unsigned char* dest = (unsigned char*)m_memBuf.GetWriteBuf( size );
1473     unsigned char* source = (unsigned char*)tocopy.m_memBuf.GetData();
1474     memcpy( dest, source, size );
1475     m_memBuf.UngetWriteBuf( size ) ;
1476     RealizeNative() ;
1477 }
1478
1479 // Construct a mask from a bitmap and a colour indicating
1480 // the transparent area
1481 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
1482 {
1483     Init() ;
1484     Create( bitmap, colour );
1485 }
1486
1487 // Construct a mask from a mono bitmap (copies the bitmap).
1488 wxMask::wxMask( const wxBitmap& bitmap )
1489 {
1490     Init() ;
1491     Create( bitmap );
1492 }
1493
1494 // Construct a mask from a mono bitmap (copies the bitmap).
1495
1496 wxMask::wxMask( const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1497 {
1498     Init() ;
1499     Create( data, width , height , bytesPerRow );
1500 }
1501
1502 wxMask::~wxMask()
1503 {
1504     if ( m_maskBitmap )
1505     {
1506         CGContextRelease( (CGContextRef) m_maskBitmap );
1507         m_maskBitmap = NULL ;
1508     }
1509 }
1510
1511 void wxMask::Init()
1512 {
1513     m_width = m_height = m_bytesPerRow = 0 ;
1514     m_maskBitmap = NULL ;
1515 }
1516
1517 void *wxMask::GetRawAccess() const
1518 {
1519     return m_memBuf.GetData() ;
1520 }
1521
1522 // The default ColorTable for k8IndexedGrayPixelFormat in Intel appears to be broken, so we'll use an non-indexed
1523 // bitmap mask instead; in order to keep the code simple, the change applies to PowerPC implementations as well
1524
1525 void wxMask::RealizeNative()
1526 {
1527     if ( m_maskBitmap )
1528     {
1529         CGContextRelease( (CGContextRef) m_maskBitmap );
1530        m_maskBitmap = NULL ;
1531     }
1532
1533     CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceGray();
1534     // from MouseTracking sample :
1535     // Ironically, due to a bug in CGImageCreateWithMask, you cannot use
1536     // CGColorSpaceCreateWithName(kCGColorSpaceGenericGray) at this point!
1537
1538     m_maskBitmap = CGBitmapContextCreate((char*) m_memBuf.GetData(), m_width, m_height, 8, m_bytesPerRow, colorspace,
1539         kCGImageAlphaNone );
1540     CGColorSpaceRelease( colorspace );
1541     wxASSERT_MSG( m_maskBitmap , wxT("Unable to create CGBitmapContext context") ) ;
1542 }
1543
1544 // Create a mask from a mono bitmap (copies the bitmap).
1545
1546 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1547 {
1548     m_memBuf = data ;
1549     m_width = width ;
1550     m_height = height ;
1551     m_bytesPerRow = bytesPerRow ;
1552
1553     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1554
1555     RealizeNative() ;
1556
1557     return true ;
1558 }
1559
1560 // Create a mask from a mono bitmap (copies the bitmap).
1561 bool wxMask::Create(const wxBitmap& bitmap)
1562 {
1563     m_width = bitmap.GetWidth() ;
1564     m_height = bitmap.GetHeight() ;
1565     m_bytesPerRow = GetBestBytesPerRow( m_width * kMaskBytesPerPixel ) ;
1566
1567     size_t size = m_bytesPerRow * m_height ;
1568     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1569     wxASSERT( destdatabase != NULL ) ;
1570
1571     memset( destdatabase , 0 , size ) ;
1572     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1573
1574     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1575     {
1576         unsigned char *destdata = destdatabase ;
1577         unsigned char r, g, b;
1578
1579         for ( int x = 0 ; x < m_width ; ++x )
1580         {
1581             srcdata++ ;
1582             r = *srcdata++ ;
1583             g = *srcdata++ ;
1584             b = *srcdata++ ;
1585
1586             if ( ( r + g + b ) > 0x10 )
1587                 *destdata++ = 0xFF ;
1588             else
1589                 *destdata++ = 0x00 ;
1590         }
1591     }
1592
1593     m_memBuf.UngetWriteBuf( size ) ;
1594     RealizeNative() ;
1595
1596     return true;
1597 }
1598
1599 // Create a mask from a bitmap and a colour indicating
1600 // the transparent area
1601 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1602 {
1603     m_width = bitmap.GetWidth() ;
1604     m_height = bitmap.GetHeight() ;
1605     m_bytesPerRow = GetBestBytesPerRow( m_width * kMaskBytesPerPixel ) ;
1606
1607     size_t size = m_bytesPerRow * m_height ;
1608     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1609     wxASSERT( destdatabase != NULL ) ;
1610
1611     memset( destdatabase , 0 , size ) ;
1612     unsigned char * srcdatabase = (unsigned char*) bitmap.GetRawAccess() ;
1613     size_t sourceBytesRow = bitmap.GetBitmapData()->GetBytesPerRow();
1614
1615     for ( int y = 0 ; y < m_height ; ++y , srcdatabase+= sourceBytesRow, destdatabase += m_bytesPerRow)
1616     {
1617         unsigned char *srcdata = srcdatabase ;
1618         unsigned char *destdata = destdatabase ;
1619         unsigned char r, g, b;
1620
1621         for ( int x = 0 ; x < m_width ; ++x )
1622         {
1623             srcdata++ ;
1624             r = *srcdata++ ;
1625             g = *srcdata++ ;
1626             b = *srcdata++ ;
1627
1628             if ( colour == wxColour( r , g , b ) )
1629                 *destdata++ = 0xFF ;
1630             else
1631                 *destdata++ = 0x00 ;
1632         }
1633     }
1634
1635     m_memBuf.UngetWriteBuf( size ) ;
1636     RealizeNative() ;
1637
1638     return true;
1639 }
1640
1641 WXHBITMAP wxMask::GetHBITMAP() const
1642 {
1643     return m_maskBitmap ;
1644 }
1645
1646 // ----------------------------------------------------------------------------
1647 // Standard Handlers
1648 // ----------------------------------------------------------------------------
1649
1650 #if !defined( __LP64__ ) && !defined(__WXOSX_IPHONE__)
1651
1652 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1653 {
1654     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1655
1656 public:
1657     inline wxPICTResourceHandler()
1658     {
1659         SetName(wxT("Macintosh Pict resource"));
1660         SetExtension(wxEmptyString);
1661         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1662     };
1663
1664     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1665           int desiredWidth, int desiredHeight);
1666 };
1667
1668 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1669
1670
1671 bool wxPICTResourceHandler::LoadFile(wxBitmap *bitmap,
1672                                      const wxString& name,
1673                                      long WXUNUSED(flags),
1674                                      int WXUNUSED(desiredWidth),
1675                                      int WXUNUSED(desiredHeight))
1676 {
1677 #if wxUSE_METAFILE
1678     Str255 theName ;
1679     wxMacStringToPascal( name , theName ) ;
1680
1681     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1682     if ( thePict )
1683     {
1684         wxMetafile mf ;
1685
1686         mf.SetPICT( thePict ) ;
1687         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1688         wxMemoryDC dc ;
1689         dc.SelectObject( *bitmap ) ;
1690         mf.Play( &dc ) ;
1691         dc.SelectObject( wxNullBitmap ) ;
1692
1693         return true ;
1694     }
1695 #endif
1696
1697     return false ;
1698 }
1699 #endif
1700
1701 void wxBitmap::InitStandardHandlers()
1702 {
1703 #if !defined( __LP64__ ) && !defined(__WXOSX_IPHONE__)
1704     AddHandler( new wxPICTResourceHandler ) ;
1705 #endif
1706 #if wxOSX_USE_CARBON
1707     AddHandler( new wxICONResourceHandler ) ;
1708 #endif
1709 }
1710
1711 // ----------------------------------------------------------------------------
1712 // raw bitmap access support
1713 // ----------------------------------------------------------------------------
1714
1715 void *wxBitmap::GetRawData(wxPixelDataBase& data, int WXUNUSED(bpp))
1716 {
1717     if ( !Ok() )
1718         // no bitmap, no data (raw or otherwise)
1719         return NULL;
1720
1721     data.m_width = GetWidth() ;
1722     data.m_height = GetHeight() ;
1723     data.m_stride = GetBitmapData()->GetBytesPerRow() ;
1724
1725     return BeginRawAccess() ;
1726 }
1727
1728 void wxBitmap::UngetRawData(wxPixelDataBase& WXUNUSED(dataBase))
1729 {
1730     EndRawAccess() ;
1731 }
1732
1733 void wxBitmap::UseAlpha()
1734 {
1735     // remember that we are using alpha channel:
1736     // we'll need to create a proper mask in UngetRawData()
1737     M_BITMAPDATA->UseAlpha( true );
1738 }