src/mac/carbon/bitmap.cpp

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