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(CGImageRef image);
  61     wxBitmapRefData();
  62     wxBitmapRefData(const wxBitmapRefData &tocopy);
  63
  64     virtual ~wxBitmapRefData();
  65
  66     virtual bool IsOk() const { return m_ok; }
  67
  68     void Free();
  69     void SetOk( bool isOk) { m_ok = isOk; }
  70
  71     void SetWidth( int width ) { m_width = width; }
  72     void SetHeight( int height ) { m_height = height; }
  73     void SetDepth( int depth ) { m_depth = depth; }
  74
  75     int GetWidth() const { return m_width; }
  76     int GetHeight() const { return m_height; }
  77     int GetDepth() const { return m_depth; }
  78
  79     void *GetRawAccess() const;
  80     void *BeginRawAccess();
  81     void EndRawAccess();
  82
  83     bool HasAlpha() const { return m_hasAlpha; }
  84     void UseAlpha( bool useAlpha );
  85
  86 public:
  87 #if wxUSE_PALETTE
  88     wxPalette     m_bitmapPalette;
  89 #endif // wxUSE_PALETTE
  90
  91     wxMask *      m_bitmapMask; // Optional mask
  92     CGImageRef    CreateCGImage() const;
  93
  94     // returns true if the bitmap has a size that
  95     // can be natively transferred into a true icon
  96     // if no is returned GetIconRef will still produce
  97     // an icon but it will be generated via a PICT and
  98     // rescaled to 16 x 16
  99     bool          HasNativeSize();
 100
 101     // caller should increase ref count if needed longer
 102     // than the bitmap exists
 103     IconRef       GetIconRef();
 104
 105 #ifndef __WXOSX_IPHONE__
 106     // returns a Pict from the bitmap content
 107     PicHandle     GetPictHandle();
 108 #endif
 109
 110     CGContextRef  GetBitmapContext() const;
 111
 112     int           GetBytesPerRow() const { return m_bytesPerRow; }
 113     private :
 114     bool Create(int width , int height , int depth);
 115     bool Create( CGImageRef image );
 116     void Init();
 117
 118     int           m_width;
 119     int           m_height;
 120     int           m_bytesPerRow;
 121     int           m_depth;
 122     bool          m_hasAlpha;
 123     wxMemoryBuffer m_memBuf;
 124     int           m_rawAccessCount;
 125     bool          m_ok;
 126     mutable CGImageRef    m_cgImageRef;
 127
 128     IconRef       m_iconRef;
 129 #ifndef __WXOSX_IPHONE__
 130     PicHandle     m_pictHandle;
 131 #endif
 132     CGContextRef  m_hBitmap;
 133 };
 134
 135
 136 #define wxOSX_USE_PREMULTIPLIED_ALPHA 1
 137 static const int kBestByteAlignement = 16;
 138 static const int kMaskBytesPerPixel = 1;
 139
 140 static int GetBestBytesPerRow( int rawBytes )
 141 {
 142     return (((rawBytes)+kBestByteAlignement-1) & ~(kBestByteAlignement-1) );
 143 }
 144
 145 #if wxUSE_GUI && !defined(__WXOSX_IPHONE__)
 146
 147 // this is used for more controls than just the wxBitmap button, also for notebooks etc
 148
 149 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
 150 {
 151     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
 152     if ( bitmap.IsOk() )
 153     {
 154         wxBitmapRefData * bmap = bitmap.GetBitmapData() ;
 155         if ( bmap == NULL )
 156             return ;
 157
 158         if ( forceType == 0  )
 159         {
 160             forceType = kControlContentCGImageRef;
 161         }
 162
 163         if ( forceType == kControlContentIconRef )
 164         {
 165             wxBitmap scaleBmp ;
 166             wxBitmapRefData* bmp = bmap ;
 167
 168             if ( !bmap->HasNativeSize() )
 169             {
 170                 // as PICT conversion will only result in a 16x16 icon, let's attempt
 171                 // a few scales for better results
 172
 173                 int w = bitmap.GetWidth() ;
 174                 int h = bitmap.GetHeight() ;
 175                 int sz = wxMax( w , h ) ;
 176                 if ( sz == 24 || sz == 64 )
 177                 {
 178                     scaleBmp = wxBitmap( bitmap.ConvertToImage().Scale( w * 2 , h * 2 ) ) ;
 179                     bmp = scaleBmp.GetBitmapData() ;
 180                 }
 181             }
 182
 183             info->contentType = kControlContentIconRef ;
 184             info->u.iconRef = bmp->GetIconRef() ;
 185             AcquireIconRef( info->u.iconRef ) ;
 186         }
 187         else if ( forceType == kControlContentCGImageRef )
 188         {
 189             info->contentType = kControlContentCGImageRef ;
 190             info->u.imageRef = (CGImageRef) bmap->CreateCGImage() ;
 191         }
 192         else
 193         {
 194 #ifndef __LP64__
 195             info->contentType = kControlContentPictHandle ;
 196             info->u.picture = bmap->GetPictHandle() ;
 197 #endif
 198         }
 199     }
 200 }
 201
 202 CGImageRef wxMacCreateCGImageFromBitmap( const wxBitmap& bitmap )
 203 {
 204     wxBitmapRefData * bmap = bitmap.GetBitmapData() ;
 205     if ( bmap == NULL )
 206         return NULL ;
 207     return (CGImageRef) bmap->CreateCGImage();
 208 }
 209
 210 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
 211 {
 212     if ( info->contentType == kControlContentIconRef )
 213     {
 214         ReleaseIconRef( info->u.iconRef ) ;
 215     }
 216     else if ( info->contentType == kControlNoContent )
 217     {
 218         // there's no bitmap at all, fall through silently
 219     }
 220     else if ( info->contentType == kControlContentPictHandle )
 221     {
 222         // owned by the bitmap, no release here
 223     }
 224     else if ( info->contentType == kControlContentCGImageRef )
 225     {
 226         CGImageRelease( info->u.imageRef ) ;
 227     }
 228     else
 229     {
 230         wxFAIL_MSG(wxT("Unexpected bitmap type") ) ;
 231     }
 232 }
 233
 234 #endif //wxUSE_BMPBUTTON
 235
 236 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
 237
 238 void wxBitmapRefData::Init()
 239 {
 240     m_width = 0 ;
 241     m_height = 0 ;
 242     m_depth = 0 ;
 243     m_bytesPerRow = 0;
 244     m_ok = false ;
 245     m_bitmapMask = NULL ;
 246     m_cgImageRef = NULL ;
 247
 248 #ifndef __WXOSX_IPHONE__
 249     m_iconRef = NULL ;
 250     m_pictHandle = NULL ;
 251 #endif
 252     m_hBitmap = NULL ;
 253
 254     m_rawAccessCount = 0 ;
 255     m_hasAlpha = false;
 256 }
 257
 258 wxBitmapRefData::wxBitmapRefData(const wxBitmapRefData &tocopy) : wxGDIRefData()
 259 {
 260     Init();
 261     Create(tocopy.m_width, tocopy.m_height, tocopy.m_depth);
 262
 263     if (tocopy.m_bitmapMask)
 264         m_bitmapMask = new wxMask(*tocopy.m_bitmapMask);
 265     else if (tocopy.m_hasAlpha)
 266         UseAlpha(true);
 267
 268     unsigned char* dest = (unsigned char*)GetRawAccess();
 269     unsigned char* source = (unsigned char*)tocopy.GetRawAccess();
 270     size_t numbytes = m_bytesPerRow * m_height;
 271     memcpy( dest, source, numbytes );
 272 }
 273
 274 wxBitmapRefData::wxBitmapRefData()
 275 {
 276     Init() ;
 277 }
 278
 279 wxBitmapRefData::wxBitmapRefData( int w , int h , int d )
 280 {
 281     Init() ;
 282     Create( w , h , d ) ;
 283 }
 284
 285 wxBitmapRefData::wxBitmapRefData(CGImageRef image)
 286 {
 287     Init();
 288     Create( image );
 289 }
 290 // code from Technical Q&A QA1509
 291
 292 bool wxBitmapRefData::Create(CGImageRef image)
 293 {
 294     if ( image != NULL )
 295     {
 296         m_width = CGImageGetWidth(image);
 297         m_height = CGImageGetHeight(image);
 298         m_depth = 32;
 299         m_hBitmap = NULL;
 300
 301         m_bytesPerRow = GetBestBytesPerRow( m_width * 4 ) ;
 302         size_t size = m_bytesPerRow * m_height ;
 303         void* data = m_memBuf.GetWriteBuf( size ) ;
 304         if ( data != NULL )
 305         {
 306             memset( data , 0 , size ) ;
 307             m_memBuf.UngetWriteBuf( size ) ;
 308             CGImageAlphaInfo alpha = CGImageGetAlphaInfo(image);
 309             if ( alpha == kCGImageAlphaNone || alpha == kCGImageAlphaNoneSkipFirst || alpha == kCGImageAlphaNoneSkipLast )
 310             {
 311                 m_hBitmap = CGBitmapContextCreate((char*) data, m_width, m_height, 8, m_bytesPerRow, wxMacGetGenericRGBColorSpace(), kCGImageAlphaNoneSkipFirst );
 312             }
 313             else
 314             {
 315                 m_hasAlpha = true;
 316                 m_hBitmap = CGBitmapContextCreate((char*) data, m_width, m_height, 8, m_bytesPerRow, wxMacGetGenericRGBColorSpace(), kCGImageAlphaPremultipliedFirst );
 317             }
 318             CGRect rect = {{0,0},{m_width,m_height}};
 319             CGContextDrawImage(m_hBitmap, rect, image);
 320
 321             wxASSERT_MSG( m_hBitmap , wxT("Unable to create CGBitmapContext context") ) ;
 322             CGContextTranslateCTM( m_hBitmap, 0,  m_height );
 323             CGContextScaleCTM( m_hBitmap, 1, -1 );
 324         } /* data != NULL */
 325     }
 326     m_ok = ( m_hBitmap != NULL ) ;
 327
 328     return m_ok ;
 329
 330 }
 331
 332 bool wxBitmapRefData::Create( int w , int h , int d )
 333 {
 334     m_width = wxMax(1, w);
 335     m_height = wxMax(1, h);
 336     m_depth = d ;
 337     m_hBitmap = NULL ;
 338
 339     m_bytesPerRow = GetBestBytesPerRow( m_width * 4 ) ;
 340     size_t size = m_bytesPerRow * m_height ;
 341     void* data = m_memBuf.GetWriteBuf( size ) ;
 342     if ( data != NULL )
 343     {
 344         memset( data , 0 , size ) ;
 345         m_memBuf.UngetWriteBuf( size ) ;
 346
 347         m_hBitmap = CGBitmapContextCreate((char*) data, m_width, m_height, 8, m_bytesPerRow, wxMacGetGenericRGBColorSpace(), kCGImageAlphaNoneSkipFirst );
 348         wxASSERT_MSG( m_hBitmap , wxT("Unable to create CGBitmapContext context") ) ;
 349         CGContextTranslateCTM( m_hBitmap, 0,  m_height );
 350         CGContextScaleCTM( m_hBitmap, 1, -1 );
 351     } /* data != NULL */
 352     m_ok = ( m_hBitmap != NULL ) ;
 353
 354     return m_ok ;
 355 }
 356
 357 void wxBitmapRefData::UseAlpha( bool use )
 358 {
 359     if ( m_hasAlpha == use )
 360         return ;
 361
 362     m_hasAlpha = use ;
 363
 364     CGContextRelease( m_hBitmap );
 365     m_hBitmap = CGBitmapContextCreate((char*) m_memBuf.GetData(), m_width, m_height, 8, m_bytesPerRow, wxMacGetGenericRGBColorSpace(), m_hasAlpha ? kCGImageAlphaPremultipliedFirst : kCGImageAlphaNoneSkipFirst );
 366     wxASSERT_MSG( m_hBitmap , wxT("Unable to create CGBitmapContext context") ) ;
 367     CGContextTranslateCTM( m_hBitmap, 0,  m_height );
 368     CGContextScaleCTM( m_hBitmap, 1, -1 );
 369 }
 370
 371 void *wxBitmapRefData::GetRawAccess() const
 372 {
 373     wxCHECK_MSG( IsOk(), NULL , wxT("invalid bitmap") ) ;
 374     return m_memBuf.GetData() ;
 375 }
 376
 377 void *wxBitmapRefData::BeginRawAccess()
 378 {
 379     wxCHECK_MSG( IsOk(), NULL, wxT("invalid bitmap") ) ;
 380     wxASSERT( m_rawAccessCount == 0 ) ;
 381 #ifndef __WXOSX_IPHONE__
 382     wxASSERT_MSG( m_pictHandle == NULL && m_iconRef == NULL ,
 383         wxT("Currently, modifing bitmaps that are used in controls already is not supported") ) ;
 384 #endif
 385     ++m_rawAccessCount ;
 386
 387     // we must destroy an existing cached image, as
 388     // the bitmap data may change now
 389     if ( m_cgImageRef )
 390     {
 391         CGImageRelease( m_cgImageRef ) ;
 392         m_cgImageRef = NULL ;
 393     }
 394
 395     return m_memBuf.GetData() ;
 396 }
 397
 398 void wxBitmapRefData::EndRawAccess()
 399 {
 400     wxCHECK_RET( IsOk() , wxT("invalid bitmap") ) ;
 401     wxASSERT( m_rawAccessCount == 1 ) ;
 402
 403     --m_rawAccessCount ;
 404 }
 405
 406 bool wxBitmapRefData::HasNativeSize()
 407 {
 408     int w = GetWidth() ;
 409     int h = GetHeight() ;
 410     int sz = wxMax( w , h ) ;
 411
 412     return ( sz == 128 || sz == 48 || sz == 32 || sz == 16 );
 413 }
 414
 415 #ifndef __WXOSX_IPHONE__
 416 IconRef wxBitmapRefData::GetIconRef()
 417 {
 418     if ( m_iconRef == NULL )
 419     {
 420         // Create Icon Family Handle
 421
 422         IconFamilyHandle iconFamily = (IconFamilyHandle) NewHandle( 0 );
 423
 424         int w = GetWidth() ;
 425         int h = GetHeight() ;
 426         int sz = wxMax( w , h ) ;
 427
 428         OSType dataType = 0 ;
 429         OSType maskType = 0 ;
 430
 431         switch (sz)
 432         {
 433             case 128:
 434                 dataType = kIconServices128PixelDataARGB ;
 435                 break;
 436
 437             case 48:
 438                 dataType = kIconServices48PixelDataARGB ;
 439                 break;
 440
 441             case 32:
 442                 dataType = kIconServices32PixelDataARGB ;
 443                 break;
 444
 445             case 16:
 446                 dataType = kIconServices16PixelDataARGB ;
 447                 break;
 448
 449             default:
 450                 break;
 451         }
 452
 453         if ( dataType != 0 )
 454         {
 455             if (  maskType == 0 )
 456             {
 457                 size_t datasize = sz * sz * 4 ;
 458                 Handle data = NewHandle( datasize ) ;
 459                 HLock( data ) ;
 460                 unsigned char* ptr = (unsigned char*) *data ;
 461                 memset( ptr, 0, datasize );
 462                 bool hasAlpha = HasAlpha() ;
 463                 wxMask *mask = m_bitmapMask ;
 464                 unsigned char * sourcePtr = (unsigned char*) GetRawAccess() ;
 465                 unsigned char * masksourcePtr = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 466
 467                 for ( int y = 0 ; y < h ; ++y, sourcePtr += m_bytesPerRow , masksourcePtr += mask ? mask->GetBytesPerRow() : 0 )
 468                 {
 469                     unsigned char * source = sourcePtr;
 470                     unsigned char * masksource = masksourcePtr;
 471                     unsigned char * dest = ptr + y * sz * 4 ;
 472                     unsigned char a, r, g, b;
 473
 474                     for ( int x = 0 ; x < w ; ++x )
 475                     {
 476                         a = *source ++ ;
 477                         r = *source ++ ;
 478                         g = *source ++ ;
 479                         b = *source ++ ;
 480
 481                         if ( mask )
 482                         {
 483                             a = 0xFF - *masksource++ ;
 484                         }
 485                         else if ( !hasAlpha )
 486                             a = 0xFF ;
 487                         else
 488                         {
 489 #if wxOSX_USE_PREMULTIPLIED_ALPHA
 490                             // this must be non-premultiplied data
 491                             if ( a != 0xFF && a!= 0 )
 492                             {
 493                                 r = r * 255 / a;
 494                                 g = g * 255 / a;
 495                                 b = b * 255 / a;
 496                             }
 497 #endif
 498                         }
 499                         *dest++ = a ;
 500                         *dest++ = r ;
 501                         *dest++ = g ;
 502                         *dest++ = b ;
 503
 504                      }
 505                 }
 506                 HUnlock( data );
 507
 508                 OSStatus err = SetIconFamilyData( iconFamily, dataType , data );
 509                 if ( err != noErr )
 510                 {
 511                     wxFAIL_MSG("Error when adding bitmap");
 512                 }
 513
 514                 DisposeHandle( data );
 515             }
 516             else
 517             {
 518                 // setup the header properly
 519
 520                 Handle data = NULL ;
 521                 Handle maskdata = NULL ;
 522                 unsigned char * maskptr = NULL ;
 523                 unsigned char * ptr = NULL ;
 524                 size_t datasize, masksize ;
 525
 526                 datasize = sz * sz * 4 ;
 527                 data = NewHandle( datasize ) ;
 528                 HLock( data ) ;
 529                 ptr = (unsigned char*) *data ;
 530                 memset( ptr , 0, datasize ) ;
 531
 532                 masksize = sz * sz ;
 533                 maskdata = NewHandle( masksize ) ;
 534                 HLock( maskdata ) ;
 535                 maskptr = (unsigned char*) *maskdata ;
 536                 memset( maskptr , 0 , masksize ) ;
 537
 538                 bool hasAlpha = HasAlpha() ;
 539                 wxMask *mask = m_bitmapMask ;
 540                 unsigned char * sourcePtr = (unsigned char*) GetRawAccess() ;
 541                 unsigned char * masksourcePtr = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 542
 543                 for ( int y = 0 ; y < h ; ++y, sourcePtr += m_bytesPerRow , masksourcePtr += mask ? mask->GetBytesPerRow() : 0 )
 544                 {
 545                     unsigned char * source = sourcePtr;
 546                     unsigned char * masksource = masksourcePtr;
 547                     unsigned char * dest = ptr + y * sz * 4 ;
 548                     unsigned char * maskdest = maskptr + y * sz ;
 549                     unsigned char a, r, g, b;
 550
 551                     for ( int x = 0 ; x < w ; ++x )
 552                     {
 553                         a = *source ++ ;
 554                         r = *source ++ ;
 555                         g = *source ++ ;
 556                         b = *source ++ ;
 557
 558                         *dest++ = 0 ;
 559                         *dest++ = r ;
 560                         *dest++ = g ;
 561                         *dest++ = b ;
 562
 563                         if ( mask )
 564                             *maskdest++ = 0xFF - *masksource++ ;
 565                         else if ( hasAlpha )
 566                             *maskdest++ = a ;
 567                         else
 568                             *maskdest++ = 0xFF ;
 569                     }
 570                 }
 571
 572                 OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 573                 wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 574
 575                 err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 576                 wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 577
 578                 HUnlock( data ) ;
 579                 HUnlock( maskdata ) ;
 580                 DisposeHandle( data ) ;
 581                 DisposeHandle( maskdata ) ;
 582             }
 583         }
 584         else
 585         {
 586             PicHandle pic = GetPictHandle() ;
 587             SetIconFamilyData( iconFamily, 'PICT' , (Handle) pic ) ;
 588         }
 589         // transform into IconRef
 590
 591         // cleaner version existing from 10.3 upwards
 592         HLock((Handle) iconFamily);
 593         OSStatus err = GetIconRefFromIconFamilyPtr( *iconFamily, GetHandleSize((Handle) iconFamily), &m_iconRef );
 594         HUnlock((Handle) iconFamily);
 595         DisposeHandle( (Handle) iconFamily ) ;
 596
 597         wxCHECK_MSG( err == noErr, NULL, wxT("Error when constructing icon ref") );
 598     }
 599
 600     return m_iconRef ;
 601 }
 602
 603 PicHandle wxBitmapRefData::GetPictHandle()
 604 {
 605     return m_pictHandle ;
 606 }
 607 #endif
 608
 609 CGImageRef wxBitmapRefData::CreateCGImage() const
 610 {
 611     wxASSERT( m_ok ) ;
 612     wxASSERT( m_rawAccessCount >= 0 ) ;
 613     CGImageRef image ;
 614     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 615     {
 616         if ( m_depth != 1 && m_bitmapMask == NULL )
 617         {
 618 #if 0
 619             // in order for this code to work properly, wxMask would have to invert black and white
 620             // in the native bitmap
 621             if ( m_bitmapMask )
 622             {
 623                 CGImageRef tempImage = CGBitmapContextCreateImage( m_hBitmap );
 624                 CGImageRef tempMask = CGBitmapContextCreateImage((CGContextRef) m_bitmapMask->GetHBITMAP() );
 625                 image = CGImageCreateWithMask( tempImage, tempMask );
 626                 CGImageRelease(tempMask);
 627                 CGImageRelease(tempImage);
 628             }
 629             else
 630 #endif
 631                 image = CGBitmapContextCreateImage( m_hBitmap );
 632         }
 633         else
 634         {
 635             size_t imageSize = m_height * m_bytesPerRow ;
 636             void * dataBuffer = m_memBuf.GetData() ;
 637             int w = m_width ;
 638             int h = m_height ;
 639             CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 640             wxMemoryBuffer membuf;
 641
 642             if ( m_bitmapMask )
 643             {
 644                 alphaInfo = kCGImageAlphaFirst ;
 645                 unsigned char *destalphastart = (unsigned char*) membuf.GetWriteBuf( imageSize ) ;
 646                 memcpy( destalphastart , dataBuffer , imageSize ) ;
 647                 unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 648                 int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 649                 for ( int y = 0 ; y < h ; ++y , destalphastart += m_bytesPerRow, sourcemaskstart += maskrowbytes)
 650                 {
 651                     unsigned char *sourcemask = sourcemaskstart ;
 652                     unsigned char *destalpha = destalphastart ;
 653                     for ( int x = 0 ; x < w ; ++x , sourcemask += kMaskBytesPerPixel , destalpha += 4 )
 654                     {
 655                         *destalpha = 0xFF - *sourcemask ;
 656                     }
 657                 }
 658                 membuf.UngetWriteBuf( imageSize );
 659             }
 660             else
 661             {
 662                 if ( m_hasAlpha )
 663                 {
 664 #if wxOSX_USE_PREMULTIPLIED_ALPHA
 665                     alphaInfo = kCGImageAlphaPremultipliedFirst ;
 666 #else
 667                     alphaInfo = kCGImageAlphaFirst ;
 668 #endif
 669                 }
 670
 671                 membuf = m_memBuf;
 672             }
 673
 674             CGDataProviderRef dataProvider = NULL ;
 675             if ( m_depth == 1 )
 676             {
 677                 // TODO CHECK ALIGNMENT
 678                 wxMemoryBuffer maskBuf;
 679                 unsigned char * maskBufData = (unsigned char*) maskBuf.GetWriteBuf( m_width * m_height );
 680                 unsigned char * bufData = (unsigned char *) membuf.GetData() ;
 681                 // copy one color component
 682                 size_t i = 0;
 683                 for( int y = 0 ; y < m_height ; bufData+= m_bytesPerRow, ++y )
 684                 {
 685                     unsigned char *bufDataIter = bufData+3;
 686                     for ( int x = 0 ; x < m_width ; bufDataIter += 4, ++x, ++i )
 687                     {
 688                         maskBufData[i] = *bufDataIter;
 689                     }
 690                 }
 691                 maskBuf.UngetWriteBuf( m_width * m_height );
 692
 693                 dataProvider =
 694                     wxMacCGDataProviderCreateWithMemoryBuffer( maskBuf );
 695
 696                 image = ::CGImageMaskCreate( w, h, 8, 8, m_width , dataProvider, NULL, false );
 697             }
 698             else
 699             {
 700                 CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 701                 dataProvider = wxMacCGDataProviderCreateWithMemoryBuffer( membuf );
 702                 image =
 703                     ::CGImageCreate(
 704                                     w, h, 8 , 32 , m_bytesPerRow , colorSpace, alphaInfo ,
 705                                     dataProvider, NULL , false , kCGRenderingIntentDefault );
 706             }
 707             CGDataProviderRelease( dataProvider);
 708         }
 709     }
 710     else
 711     {
 712         image = m_cgImageRef ;
 713         CGImageRetain( image ) ;
 714     }
 715
 716     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 717     {
 718         // we keep it for later use
 719         m_cgImageRef = image ;
 720         CGImageRetain( image ) ;
 721     }
 722
 723     return image ;
 724 }
 725
 726 CGContextRef wxBitmapRefData::GetBitmapContext() const
 727 {
 728     return m_hBitmap;
 729 }
 730
 731 void wxBitmapRefData::Free()
 732 {
 733     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 734
 735     if ( m_cgImageRef )
 736     {
 737         CGImageRelease( m_cgImageRef ) ;
 738         m_cgImageRef = NULL ;
 739     }
 740 #ifndef __WXOSX_IPHONE__
 741     if ( m_iconRef )
 742     {
 743         ReleaseIconRef( m_iconRef ) ;
 744         m_iconRef = NULL ;
 745     }
 746
 747 #ifndef __LP64__
 748     if ( m_pictHandle )
 749     {
 750         m_pictHandle = NULL ;
 751     }
 752 #endif
 753 #endif
 754     if ( m_hBitmap )
 755     {
 756         CGContextRelease(m_hBitmap);
 757         m_hBitmap = NULL ;
 758     }
 759
 760     wxDELETE(m_bitmapMask);
 761 }
 762
 763 wxBitmapRefData::~wxBitmapRefData()
 764 {
 765     Free() ;
 766 }
 767
 768
 769
 770 // ----------------------------------------------------------------------------
 771 // wxBitmap
 772 // ----------------------------------------------------------------------------
 773
 774 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 775 {
 776     bool created = false ;
 777     int w = icon.GetWidth() ;
 778     int h = icon.GetHeight() ;
 779
 780     Create( w , h ) ;
 781 #ifdef __WXOSX_CARBON__
 782     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 783     {
 784         IconFamilyHandle iconFamily = NULL ;
 785         Handle imagehandle = NewHandle( 0 ) ;
 786         Handle maskhandle = NewHandle( 0 ) ;
 787
 788         OSType maskType = 0;
 789         OSType dataType = 0;
 790         IconSelectorValue selector = 0 ;
 791
 792         switch (w)
 793         {
 794             case 128:
 795                 dataType = kThumbnail32BitData ;
 796                 maskType = kThumbnail8BitMask ;
 797                 selector = kSelectorAllAvailableData ;
 798                 break;
 799
 800             case 48:
 801                 dataType = kHuge32BitData ;
 802                 maskType = kHuge8BitMask ;
 803                 selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 804                 break;
 805
 806             case 32:
 807                 dataType = kLarge32BitData ;
 808                 maskType = kLarge8BitMask ;
 809                 selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 810                 break;
 811
 812             case 16:
 813                 dataType = kSmall32BitData ;
 814                 maskType = kSmall8BitMask ;
 815                 selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 816                 break;
 817
 818             default:
 819                 break;
 820         }
 821
 822         OSStatus err = IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ;
 823
 824         err = GetIconFamilyData( iconFamily , dataType , imagehandle ) ;
 825         err = GetIconFamilyData( iconFamily , maskType , maskhandle ) ;
 826         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 827         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 828
 829         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 830         {
 831             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 832             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 833
 834             UseAlpha() ;
 835
 836             unsigned char *source = (unsigned char *) *imagehandle ;
 837             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 838             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 839
 840             for ( int y = 0 ; y < h ; ++y )
 841             {
 842                 for ( int x = 0 ; x < w ; ++x )
 843                 {
 844                     unsigned char a = *sourcemask++;
 845                     *destination++ = a;
 846                     source++ ;
 847 #if wxOSX_USE_PREMULTIPLIED_ALPHA
 848                     *destination++ = ( (*source++) * a + 127 ) / 255;
 849                     *destination++ = ( (*source++) * a + 127 ) / 255;
 850                     *destination++ = ( (*source++) * a + 127 ) / 255;
 851 #else
 852                     *destination++ = *source++ ;
 853                     *destination++ = *source++ ;
 854                     *destination++ = *source++ ;
 855 #endif
 856                 }
 857             }
 858
 859             EndRawAccess() ;
 860             DisposeHandle( imagehandle ) ;
 861             DisposeHandle( maskhandle ) ;
 862             created = true ;
 863         }
 864
 865         DisposeHandle( (Handle) iconFamily ) ;
 866     }
 867 #endif
 868     if ( !created )
 869     {
 870         wxMemoryDC dc ;
 871         dc.SelectObject( *this ) ;
 872         dc.DrawIcon( icon , 0 , 0 ) ;
 873         dc.SelectObject( wxNullBitmap ) ;
 874     }
 875
 876     return true;
 877 }
 878
 879 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 880 {
 881     wxBitmapRefData* bitmapRefData;
 882
 883     m_refData = bitmapRefData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 884
 885     if (bitmapRefData->IsOk())
 886     {
 887         if ( no_bits == 1 )
 888         {
 889             int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 890             if ( the_width % (sizeof(unsigned char) * 8) )
 891                 linesize += sizeof(unsigned char);
 892
 893             unsigned char* linestart = (unsigned char*) bits ;
 894             unsigned char* destptr = (unsigned char*) BeginRawAccess() ;
 895
 896             for ( int y = 0 ; y < the_height ; ++y , linestart += linesize, destptr += M_BITMAPDATA->GetBytesPerRow() )
 897             {
 898                 unsigned char* destination = destptr;
 899                 int index, bit, mask;
 900
 901                 for ( int x = 0 ; x < the_width ; ++x )
 902                 {
 903                     index = x / 8 ;
 904                     bit = x % 8 ;
 905                     mask = 1 << bit ;
 906
 907                     if ( linestart[index] & mask )
 908                     {
 909                         *destination++ = 0xFF ;
 910                         *destination++ = 0 ;
 911                         *destination++ = 0 ;
 912                         *destination++ = 0 ;
 913                     }
 914                     else
 915                     {
 916                         *destination++ = 0xFF ;
 917                         *destination++ = 0xFF ;
 918                         *destination++ = 0xFF ;
 919                         *destination++ = 0xFF ;
 920                     }
 921                 }
 922             }
 923
 924             EndRawAccess() ;
 925         }
 926         else
 927         {
 928             wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 929         }
 930     } /* bitmapRefData->IsOk() */
 931 }
 932
 933 wxBitmap::wxBitmap(const void* data, wxBitmapType type, int width, int height, int depth)
 934 {
 935     (void) Create(data, type, width, height, depth);
 936 }
 937
 938 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 939 {
 940     LoadFile(filename, type);
 941 }
 942
 943 wxBitmap::wxBitmap(CGImageRef image)
 944 {
 945     (void) Create(image);
 946 }
 947
 948 wxGDIRefData* wxBitmap::CreateGDIRefData() const
 949 {
 950     return new wxBitmapRefData;
 951 }
 952
 953 wxGDIRefData* wxBitmap::CloneGDIRefData(const wxGDIRefData* data) const
 954 {
 955     return new wxBitmapRefData(*static_cast<const wxBitmapRefData *>(data));
 956 }
 957
 958 void * wxBitmap::GetRawAccess() const
 959 {
 960     wxCHECK_MSG( IsOk() , NULL , wxT("invalid bitmap") ) ;
 961
 962     return M_BITMAPDATA->GetRawAccess() ;
 963 }
 964
 965 void * wxBitmap::BeginRawAccess()
 966 {
 967     wxCHECK_MSG( IsOk() , NULL , wxT("invalid bitmap") ) ;
 968
 969     return M_BITMAPDATA->BeginRawAccess() ;
 970 }
 971
 972 void wxBitmap::EndRawAccess()
 973 {
 974     wxCHECK_RET( IsOk() , wxT("invalid bitmap") ) ;
 975
 976     M_BITMAPDATA->EndRawAccess() ;
 977 }
 978
 979 CGImageRef wxBitmap::CreateCGImage() const
 980 {
 981     wxCHECK_MSG( IsOk(), NULL , wxT("invalid bitmap") ) ;
 982
 983     return M_BITMAPDATA->CreateCGImage() ;
 984 }
 985
 986 #ifndef  __WXOSX_IPHONE__
 987 IconRef wxBitmap::GetIconRef() const
 988 {
 989     wxCHECK_MSG( IsOk(), NULL , wxT("invalid bitmap") ) ;
 990
 991     return M_BITMAPDATA->GetIconRef() ;
 992 }
 993
 994 IconRef wxBitmap::CreateIconRef() const
 995 {
 996     IconRef icon = GetIconRef();
 997     verify_noerr( AcquireIconRef(icon) );
 998     return icon;
 999 }
1000 #endif
1001
1002 #if wxOSX_USE_COCOA
1003
1004 WX_NSImage wxBitmap::GetNSImage() const
1005 {
1006     wxCFRef< CGImageRef > cgimage(CreateCGImage());
1007     return wxOSXGetNSImageFromCGImage( cgimage );
1008 }
1009
1010 #endif
1011
1012 #if wxOSX_USE_IPHONE
1013
1014 WX_UIImage wxBitmap::GetUIImage() const
1015 {
1016     wxCFRef< CGImageRef > cgimage(CreateCGImage());
1017     return wxOSXGetUIImageFromCGImage( cgimage );
1018 }
1019
1020 #endif
1021 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
1022 {
1023     wxCHECK_MSG( IsOk() &&
1024                 (rect.x >= 0) && (rect.y >= 0) &&
1025                 (rect.x+rect.width <= GetWidth()) &&
1026                 (rect.y+rect.height <= GetHeight()),
1027                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
1028
1029     wxBitmap ret( rect.width, rect.height, GetDepth() );
1030     wxASSERT_MSG( ret.IsOk(), wxT("GetSubBitmap error") );
1031
1032     int destwidth = rect.width ;
1033     int destheight = rect.height ;
1034
1035     {
1036         unsigned char *sourcedata = (unsigned char*) GetRawAccess() ;
1037         unsigned char *destdata = (unsigned char*) ret.BeginRawAccess() ;
1038         wxASSERT( (sourcedata != NULL) && (destdata != NULL) ) ;
1039
1040         int sourcelinesize = GetBitmapData()->GetBytesPerRow() ;
1041         int destlinesize = ret.GetBitmapData()->GetBytesPerRow() ;
1042         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
1043         unsigned char *dest = destdata ;
1044
1045         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
1046         {
1047             memcpy( dest , source , destlinesize ) ;
1048         }
1049     }
1050
1051     ret.EndRawAccess() ;
1052
1053     if ( M_BITMAPDATA->m_bitmapMask )
1054     {
1055         wxMemoryBuffer maskbuf ;
1056         int rowBytes = GetBestBytesPerRow( destwidth * kMaskBytesPerPixel );
1057         size_t maskbufsize = rowBytes * destheight ;
1058
1059         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow() ;
1060         int destlinesize = rowBytes ;
1061
1062         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
1063         unsigned char *destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
1064         wxASSERT( (source != NULL) && (destdata != NULL) ) ;
1065
1066         source += rect.x * kMaskBytesPerPixel + rect.y * sourcelinesize ;
1067         unsigned char *dest = destdata ;
1068
1069         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
1070         {
1071             memcpy( dest , source , destlinesize ) ;
1072         }
1073
1074         maskbuf.UngetWriteBuf( maskbufsize ) ;
1075         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
1076     }
1077     else if ( HasAlpha() )
1078         ret.UseAlpha() ;
1079
1080     return ret;
1081 }
1082
1083 bool wxBitmap::Create(int w, int h, int d)
1084 {
1085     UnRef();
1086
1087     if ( d < 0 )
1088         d = wxDisplayDepth() ;
1089
1090     m_refData = new wxBitmapRefData( w , h , d );
1091
1092     return M_BITMAPDATA->IsOk() ;
1093 }
1094
1095
1096 bool wxBitmap::Create(CGImageRef image)
1097 {
1098     UnRef();
1099
1100     m_refData = new wxBitmapRefData( image );
1101
1102     return M_BITMAPDATA->IsOk() ;
1103 }
1104
1105 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
1106 {
1107     UnRef();
1108
1109     wxBitmapHandler *handler = FindHandler(type);
1110
1111     if ( handler )
1112     {
1113         m_refData = new wxBitmapRefData;
1114
1115         return handler->LoadFile(this, filename, type, -1, -1);
1116     }
1117     else
1118     {
1119 #if wxUSE_IMAGE
1120         wxImage loadimage(filename, type);
1121         if (loadimage.IsOk())
1122         {
1123             *this = loadimage;
1124
1125             return true;
1126         }
1127 #endif
1128     }
1129
1130     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1131
1132     return false;
1133 }
1134
1135 bool wxBitmap::Create(const void* data, wxBitmapType type, int width, int height, int depth)
1136 {
1137     UnRef();
1138
1139     m_refData = new wxBitmapRefData;
1140
1141     wxBitmapHandler *handler = FindHandler(type);
1142
1143     if ( handler == NULL )
1144     {
1145         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1146
1147         return false;
1148     }
1149
1150     return handler->Create(this, data, type, width, height, depth);
1151 }
1152
1153 #if wxUSE_IMAGE
1154
1155 wxBitmap::wxBitmap(const wxImage& image, int depth)
1156 {
1157     wxCHECK_RET( image.IsOk(), wxT("invalid image") );
1158
1159     // width and height of the device-dependent bitmap
1160     int width = image.GetWidth();
1161     int height = image.GetHeight();
1162
1163     wxBitmapRefData* bitmapRefData;
1164
1165     m_refData = bitmapRefData = new wxBitmapRefData( width , height , depth ) ;
1166
1167     if ( bitmapRefData->IsOk())
1168     {
1169         // Create picture
1170
1171         bool hasAlpha = false ;
1172
1173         if ( image.HasMask() )
1174         {
1175             // takes precedence, don't mix with alpha info
1176         }
1177         else
1178         {
1179             hasAlpha = image.HasAlpha() ;
1180         }
1181
1182         if ( hasAlpha )
1183             UseAlpha() ;
1184
1185         unsigned char* destinationstart = (unsigned char*) BeginRawAccess() ;
1186         register unsigned char* data = image.GetData();
1187         if ( destinationstart != NULL && data != NULL )
1188         {
1189             const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
1190             for (int y = 0; y < height; destinationstart += M_BITMAPDATA->GetBytesPerRow(), y++)
1191             {
1192                 unsigned char * destination = destinationstart;
1193                 for (int x = 0; x < width; x++)
1194                 {
1195                     if ( hasAlpha )
1196                     {
1197                         const unsigned char a = *alpha++;
1198                         *destination++ = a ;
1199
1200     #if wxOSX_USE_PREMULTIPLIED_ALPHA
1201                         *destination++ = ((*data++) * a + 127) / 255 ;
1202                         *destination++ = ((*data++) * a + 127) / 255 ;
1203                         *destination++ = ((*data++) * a + 127) / 255 ;
1204     #else
1205                         *destination++ = *data++ ;
1206                         *destination++ = *data++ ;
1207                         *destination++ = *data++ ;
1208     #endif
1209                     }
1210                     else
1211                     {
1212                         *destination++ = 0xFF ;
1213                         *destination++ = *data++ ;
1214                         *destination++ = *data++ ;
1215                         *destination++ = *data++ ;
1216                     }
1217                 }
1218             }
1219
1220             EndRawAccess() ;
1221         }
1222         if ( image.HasMask() )
1223             SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
1224     } /* bitmapRefData->IsOk() */
1225 }
1226
1227 wxImage wxBitmap::ConvertToImage() const
1228 {
1229     wxImage image;
1230
1231     wxCHECK_MSG( IsOk(), wxNullImage, wxT("invalid bitmap") );
1232
1233     // create an wxImage object
1234     int width = GetWidth();
1235     int height = GetHeight();
1236     image.Create( width, height );
1237
1238     unsigned char *data = image.GetData();
1239     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
1240
1241     unsigned char* sourcestart = (unsigned char*) GetRawAccess() ;
1242
1243     bool hasAlpha = false ;
1244     bool hasMask = false ;
1245     int maskBytesPerRow = 0 ;
1246     unsigned char *alpha = NULL ;
1247     unsigned char *mask = NULL ;
1248
1249     if ( HasAlpha() )
1250         hasAlpha = true ;
1251
1252     if ( GetMask() )
1253     {
1254         hasMask = true ;
1255         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1256         maskBytesPerRow = GetMask()->GetBytesPerRow() ;
1257     }
1258
1259     if ( hasAlpha )
1260     {
1261         image.SetAlpha() ;
1262         alpha = image.GetAlpha() ;
1263     }
1264
1265     int index = 0;
1266
1267     // The following masking algorithm is the same as well in msw/gtk:
1268     // the colour used as transparent one in wxImage and the one it is
1269     // replaced with when it actually occurs in the bitmap
1270     static const int MASK_RED = 1;
1271     static const int MASK_GREEN = 2;
1272     static const int MASK_BLUE = 3;
1273     static const int MASK_BLUE_REPLACEMENT = 2;
1274
1275     for (int yy = 0; yy < height; yy++ , sourcestart += M_BITMAPDATA->GetBytesPerRow() , mask += maskBytesPerRow )
1276     {
1277         unsigned char * maskp = mask ;
1278         unsigned char * source = sourcestart;
1279         unsigned char a, r, g, b;
1280         long color;
1281
1282         for (int xx = 0; xx < width; xx++)
1283         {
1284             color = *((long*) source) ;
1285 #ifdef WORDS_BIGENDIAN
1286             a = ((color&0xFF000000) >> 24) ;
1287             r = ((color&0x00FF0000) >> 16) ;
1288             g = ((color&0x0000FF00) >> 8) ;
1289             b = (color&0x000000FF);
1290 #else
1291             b = ((color&0xFF000000) >> 24) ;
1292             g = ((color&0x00FF0000) >> 16) ;
1293             r = ((color&0x0000FF00) >> 8) ;
1294             a = (color&0x000000FF);
1295 #endif
1296             if ( hasMask )
1297             {
1298                 if ( *maskp++ == 0xFF )
1299                 {
1300                     r = MASK_RED ;
1301                     g = MASK_GREEN ;
1302                     b = MASK_BLUE ;
1303                 }
1304                 else if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1305                     b = MASK_BLUE_REPLACEMENT ;
1306             }
1307             else if ( hasAlpha )
1308             {
1309                 *alpha++ = a ;
1310 #if wxOSX_USE_PREMULTIPLIED_ALPHA
1311                 // this must be non-premultiplied data
1312                 if ( a != 0xFF && a!= 0 )
1313                 {
1314                     r = r * 255 / a;
1315                     g = g * 255 / a;
1316                     b = b * 255 / a;
1317                 }
1318 #endif
1319             }
1320
1321             data[index    ] = r ;
1322             data[index + 1] = g ;
1323             data[index + 2] = b ;
1324
1325             index += 3;
1326             source += 4 ;
1327         }
1328     }
1329
1330     if ( hasMask )
1331         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1332
1333     return image;
1334 }
1335
1336 #endif //wxUSE_IMAGE
1337
1338 bool wxBitmap::SaveFile( const wxString& filename,
1339     wxBitmapType type, const wxPalette *palette ) const
1340 {
1341     bool success = false;
1342     wxBitmapHandler *handler = FindHandler(type);
1343
1344     if ( handler )
1345     {
1346         success = handler->SaveFile(this, filename, type, palette);
1347     }
1348     else
1349     {
1350 #if wxUSE_IMAGE
1351         wxImage image = ConvertToImage();
1352         success = image.SaveFile(filename, type);
1353 #else
1354         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1355 #endif
1356     }
1357
1358     return success;
1359 }
1360
1361 int wxBitmap::GetHeight() const
1362 {
1363    wxCHECK_MSG( IsOk(), -1, wxT("invalid bitmap") );
1364
1365    return M_BITMAPDATA->GetHeight();
1366 }
1367
1368 int wxBitmap::GetWidth() const
1369 {
1370    wxCHECK_MSG( IsOk(), -1, wxT("invalid bitmap") );
1371
1372    return M_BITMAPDATA->GetWidth() ;
1373 }
1374
1375 int wxBitmap::GetDepth() const
1376 {
1377    wxCHECK_MSG( IsOk(), -1, wxT("invalid bitmap") );
1378
1379    return M_BITMAPDATA->GetDepth();
1380 }
1381
1382 wxMask *wxBitmap::GetMask() const
1383 {
1384    wxCHECK_MSG( IsOk(), NULL, wxT("invalid bitmap") );
1385
1386    return M_BITMAPDATA->m_bitmapMask;
1387 }
1388
1389 bool wxBitmap::HasAlpha() const
1390 {
1391    wxCHECK_MSG( IsOk(), false , wxT("invalid bitmap") );
1392
1393    return M_BITMAPDATA->HasAlpha() ;
1394 }
1395
1396 void wxBitmap::SetWidth(int w)
1397 {
1398     AllocExclusive();
1399     M_BITMAPDATA->SetWidth(w);
1400 }
1401
1402 void wxBitmap::SetHeight(int h)
1403 {
1404     AllocExclusive();
1405     M_BITMAPDATA->SetHeight(h);
1406 }
1407
1408 void wxBitmap::SetDepth(int d)
1409 {
1410     AllocExclusive();
1411     M_BITMAPDATA->SetDepth(d);
1412 }
1413
1414 void wxBitmap::SetOk(bool isOk)
1415 {
1416     AllocExclusive();
1417     M_BITMAPDATA->SetOk(isOk);
1418 }
1419
1420 #if wxUSE_PALETTE
1421 wxPalette *wxBitmap::GetPalette() const
1422 {
1423    wxCHECK_MSG( IsOk(), NULL, wxT("Invalid bitmap  GetPalette()") );
1424
1425    return &M_BITMAPDATA->m_bitmapPalette;
1426 }
1427
1428 void wxBitmap::SetPalette(const wxPalette& palette)
1429 {
1430     AllocExclusive();
1431     M_BITMAPDATA->m_bitmapPalette = palette ;
1432 }
1433 #endif // wxUSE_PALETTE
1434
1435 void wxBitmap::SetMask(wxMask *mask)
1436 {
1437     AllocExclusive();
1438     // Remove existing mask if there is one.
1439     delete M_BITMAPDATA->m_bitmapMask;
1440
1441     M_BITMAPDATA->m_bitmapMask = mask ;
1442 }
1443
1444 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1445 {
1446     wxUnusedVar(mask);
1447
1448     return WXHBITMAP(M_BITMAPDATA->GetBitmapContext());
1449 }
1450
1451 // ----------------------------------------------------------------------------
1452 // wxMask
1453 // ----------------------------------------------------------------------------
1454
1455 wxMask::wxMask()
1456 {
1457     Init() ;
1458 }
1459
1460 wxMask::wxMask(const wxMask &tocopy) : wxObject()
1461 {
1462     Init();
1463
1464     m_bytesPerRow = tocopy.m_bytesPerRow;
1465     m_width = tocopy.m_width;
1466     m_height = tocopy.m_height;
1467
1468     size_t size = m_bytesPerRow * m_height;
1469     unsigned char* dest = (unsigned char*)m_memBuf.GetWriteBuf( size );
1470     unsigned char* source = (unsigned char*)tocopy.m_memBuf.GetData();
1471     memcpy( dest, source, size );
1472     m_memBuf.UngetWriteBuf( size ) ;
1473     RealizeNative() ;
1474 }
1475
1476 // Construct a mask from a bitmap and a colour indicating
1477 // the transparent area
1478 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
1479 {
1480     Init() ;
1481     Create( bitmap, colour );
1482 }
1483
1484 // Construct a mask from a mono bitmap (copies the bitmap).
1485 wxMask::wxMask( const wxBitmap& bitmap )
1486 {
1487     Init() ;
1488     Create( bitmap );
1489 }
1490
1491 // Construct a mask from a mono bitmap (copies the bitmap).
1492
1493 wxMask::wxMask( const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1494 {
1495     Init() ;
1496     Create( data, width , height , bytesPerRow );
1497 }
1498
1499 wxMask::~wxMask()
1500 {
1501     if ( m_maskBitmap )
1502     {
1503         CGContextRelease( (CGContextRef) m_maskBitmap );
1504         m_maskBitmap = NULL ;
1505     }
1506 }
1507
1508 void wxMask::Init()
1509 {
1510     m_width = m_height = m_bytesPerRow = 0 ;
1511     m_maskBitmap = NULL ;
1512 }
1513
1514 void *wxMask::GetRawAccess() const
1515 {
1516     return m_memBuf.GetData() ;
1517 }
1518
1519 // The default ColorTable for k8IndexedGrayPixelFormat in Intel appears to be broken, so we'll use an non-indexed
1520 // bitmap mask instead; in order to keep the code simple, the change applies to PowerPC implementations as well
1521
1522 void wxMask::RealizeNative()
1523 {
1524     if ( m_maskBitmap )
1525     {
1526         CGContextRelease( (CGContextRef) m_maskBitmap );
1527        m_maskBitmap = NULL ;
1528     }
1529
1530     CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceGray();
1531     // from MouseTracking sample :
1532     // Ironically, due to a bug in CGImageCreateWithMask, you cannot use
1533     // CGColorSpaceCreateWithName(kCGColorSpaceGenericGray) at this point!
1534
1535     m_maskBitmap = CGBitmapContextCreate((char*) m_memBuf.GetData(), m_width, m_height, 8, m_bytesPerRow, colorspace,
1536         kCGImageAlphaNone );
1537     CGColorSpaceRelease( colorspace );
1538     wxASSERT_MSG( m_maskBitmap , wxT("Unable to create CGBitmapContext context") ) ;
1539 }
1540
1541 // Create a mask from a mono bitmap (copies the bitmap).
1542
1543 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1544 {
1545     m_memBuf = data ;
1546     m_width = width ;
1547     m_height = height ;
1548     m_bytesPerRow = bytesPerRow ;
1549
1550     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1551
1552     RealizeNative() ;
1553
1554     return true ;
1555 }
1556
1557 // Create a mask from a mono bitmap (copies the bitmap).
1558 bool wxMask::Create(const wxBitmap& bitmap)
1559 {
1560     m_width = bitmap.GetWidth() ;
1561     m_height = bitmap.GetHeight() ;
1562     m_bytesPerRow = GetBestBytesPerRow( m_width * kMaskBytesPerPixel ) ;
1563
1564     size_t size = m_bytesPerRow * m_height ;
1565     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1566     wxASSERT( destdatabase != NULL ) ;
1567
1568     if ( destdatabase )
1569     {
1570         memset( destdatabase , 0 , size ) ;
1571         unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1572
1573         for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1574         {
1575             unsigned char *destdata = destdatabase ;
1576             unsigned char r, g, b;
1577
1578             for ( int x = 0 ; x < m_width ; ++x )
1579             {
1580                 srcdata++ ;
1581                 r = *srcdata++ ;
1582                 g = *srcdata++ ;
1583                 b = *srcdata++ ;
1584
1585                 if ( ( r + g + b ) > 0x10 )
1586                     *destdata++ = 0xFF ;
1587                 else
1588                     *destdata++ = 0x00 ;
1589             }
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 class WXDLLEXPORT wxBundleResourceHandler: public wxBitmapHandler
1651 {
1652     DECLARE_ABSTRACT_CLASS(wxBundleResourceHandler)
1653
1654 public:
1655     inline wxBundleResourceHandler()
1656     {
1657     };
1658
1659     virtual bool LoadFile(wxBitmap *bitmap,
1660                           const wxString& name,
1661                           wxBitmapType type,
1662                           int desiredWidth,
1663                           int desiredHeight);
1664 };
1665
1666 IMPLEMENT_ABSTRACT_CLASS(wxBundleResourceHandler, wxBitmapHandler);
1667
1668 class WXDLLEXPORT wxPNGResourceHandler: public wxBundleResourceHandler
1669 {
1670     DECLARE_DYNAMIC_CLASS(wxPNGResourceHandler)
1671
1672 public:
1673     inline wxPNGResourceHandler()
1674     {
1675         SetName(wxT("PNG resource"));
1676         SetExtension("PNG");
1677         SetType(wxBITMAP_TYPE_PNG_RESOURCE);
1678     };
1679 };
1680
1681 IMPLEMENT_DYNAMIC_CLASS(wxPNGResourceHandler, wxBundleResourceHandler)
1682
1683 class WXDLLEXPORT wxJPEGResourceHandler: public wxBundleResourceHandler
1684 {
1685     DECLARE_DYNAMIC_CLASS(wxPNGResourceHandler)
1686
1687 public:
1688     inline wxJPEGResourceHandler()
1689     {
1690         SetName(wxT("JPEG resource"));
1691         SetExtension("JPEG");
1692         SetType(wxBITMAP_TYPE_JPEG_RESOURCE);
1693     };
1694 };
1695
1696 IMPLEMENT_DYNAMIC_CLASS(wxJPEGResourceHandler, wxBundleResourceHandler)
1697
1698 bool wxBundleResourceHandler::LoadFile(wxBitmap *bitmap,
1699                                      const wxString& name,
1700                                      wxBitmapType WXUNUSED(type),
1701                                      int WXUNUSED(desiredWidth),
1702                                      int WXUNUSED(desiredHeight))
1703 {
1704     wxString ext = GetExtension().Lower();
1705     wxCFStringRef resname(name);
1706     wxCFStringRef restype(ext);
1707
1708     wxCFRef<CFURLRef> imageURL(CFBundleCopyResourceURL(CFBundleGetMainBundle(), resname, restype, NULL));
1709
1710     if ( imageURL.get() != NULL )
1711     {
1712         // Create the data provider object
1713         wxCFRef<CGDataProviderRef> provider(CGDataProviderCreateWithURL (imageURL) );
1714         CGImageRef image = NULL;
1715
1716         if ( ext == "jpeg" )
1717             image = CGImageCreateWithJPEGDataProvider (provider, NULL, true,
1718                                                    kCGRenderingIntentDefault);
1719         else if ( ext == "png" )
1720             image = CGImageCreateWithPNGDataProvider (provider, NULL, true,
1721                                                        kCGRenderingIntentDefault);
1722         if ( image != NULL )
1723         {
1724             bitmap->Create(image);
1725             CGImageRelease(image);
1726         }
1727     }
1728
1729     return false ;
1730 }
1731
1732 void wxBitmap::InitStandardHandlers()
1733 {
1734 #if wxOSX_USE_COCOA_OR_CARBON
1735     AddHandler( new wxICONResourceHandler ) ;
1736 #endif
1737     AddHandler( new wxPNGResourceHandler );
1738     AddHandler( new wxJPEGResourceHandler );
1739 }
1740
1741 // ----------------------------------------------------------------------------
1742 // raw bitmap access support
1743 // ----------------------------------------------------------------------------
1744
1745 void *wxBitmap::GetRawData(wxPixelDataBase& data, int WXUNUSED(bpp))
1746 {
1747     if ( !IsOk() )
1748         // no bitmap, no data (raw or otherwise)
1749         return NULL;
1750
1751     data.m_width = GetWidth() ;
1752     data.m_height = GetHeight() ;
1753     data.m_stride = GetBitmapData()->GetBytesPerRow() ;
1754
1755     return BeginRawAccess() ;
1756 }
1757
1758 void wxBitmap::UngetRawData(wxPixelDataBase& WXUNUSED(dataBase))
1759 {
1760     EndRawAccess() ;
1761 }
1762
1763 void wxBitmap::UseAlpha()
1764 {
1765     // remember that we are using alpha channel:
1766     // we'll need to create a proper mask in UngetRawData()
1767     M_BITMAPDATA->UseAlpha( true );
1768 }