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 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 ( m_bitmapMask )
 619             {
 620                 CGImageRef tempImage = CGBitmapContextCreateImage( m_hBitmap );
 621                 CGImageRef tempMask = CGBitmapContextCreateImage((CGContextRef) m_bitmapMask->GetHBITMAP() );
 622                 image = CGImageCreateWithMask( tempImage, tempMask );
 623                 CGImageRelease(tempMask);
 624                 CGImageRelease(tempImage);
 625             }
 626             else
 627                 image = CGBitmapContextCreateImage( m_hBitmap );
 628         }
 629         else
 630         {
 631             size_t imageSize = m_height * m_bytesPerRow ;
 632             void * dataBuffer = m_memBuf.GetData() ;
 633             int w = m_width ;
 634             int h = m_height ;
 635             CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 636             wxMemoryBuffer membuf;
 637
 638             if ( m_bitmapMask )
 639             {
 640                 alphaInfo = kCGImageAlphaFirst ;
 641                 unsigned char *destalphastart = (unsigned char*) membuf.GetWriteBuf( imageSize ) ;
 642                 memcpy( destalphastart , dataBuffer , imageSize ) ;
 643                 unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 644                 int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 645                 for ( int y = 0 ; y < h ; ++y , destalphastart += m_bytesPerRow, sourcemaskstart += maskrowbytes)
 646                 {
 647                     unsigned char *sourcemask = sourcemaskstart ;
 648                     unsigned char *destalpha = destalphastart ;
 649                     for ( int x = 0 ; x < w ; ++x , sourcemask += kMaskBytesPerPixel , destalpha += 4 )
 650                     {
 651                         *destalpha = 0xFF - *sourcemask ;
 652                     }
 653                 }
 654                 membuf.UngetWriteBuf( imageSize );
 655             }
 656             else
 657             {
 658                 if ( m_hasAlpha )
 659                 {
 660 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 661                     alphaInfo = kCGImageAlphaPremultipliedFirst ;
 662 #else
 663                     alphaInfo = kCGImageAlphaFirst ;
 664 #endif
 665                 }
 666
 667                 membuf = m_memBuf;
 668             }
 669
 670             CGDataProviderRef dataProvider = NULL ;
 671             if ( m_depth == 1 )
 672             {
 673                 // TODO CHECK ALIGNMENT
 674                 wxMemoryBuffer maskBuf;
 675                 unsigned char * maskBufData = (unsigned char*) maskBuf.GetWriteBuf( m_width * m_height );
 676                 unsigned char * bufData = (unsigned char *) membuf.GetData() ;
 677                 // copy one color component
 678                 size_t i = 0;
 679                 for( int y = 0 ; y < m_height ; bufData+= m_bytesPerRow, ++y )
 680                 {
 681                     unsigned char *bufDataIter = bufData+3;
 682                     for ( int x = 0 ; x < m_width ; bufDataIter += 4, ++x, ++i )
 683                     {
 684                         maskBufData[i] = *bufDataIter;
 685                     }
 686                 }
 687                 maskBuf.UngetWriteBuf( m_width * m_height );
 688
 689                 dataProvider =
 690                     wxMacCGDataProviderCreateWithMemoryBuffer( maskBuf );
 691
 692                 image = ::CGImageMaskCreate( w, h, 8, 8, m_width , dataProvider, NULL, false );
 693             }
 694             else
 695             {
 696                 CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 697                 dataProvider = wxMacCGDataProviderCreateWithMemoryBuffer( membuf );
 698                 image =
 699                     ::CGImageCreate(
 700                                     w, h, 8 , 32 , m_bytesPerRow , colorSpace, alphaInfo ,
 701                                     dataProvider, NULL , false , kCGRenderingIntentDefault );
 702             }
 703             CGDataProviderRelease( dataProvider);
 704         }
 705     }
 706     else
 707     {
 708         image = m_cgImageRef ;
 709         CGImageRetain( image ) ;
 710     }
 711
 712     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 713     {
 714         // we keep it for later use
 715         m_cgImageRef = image ;
 716         CGImageRetain( image ) ;
 717     }
 718
 719     return image ;
 720 }
 721
 722 CGContextRef wxBitmapRefData::GetBitmapContext() const
 723 {
 724     return m_hBitmap;
 725 }
 726
 727 void wxBitmapRefData::Free()
 728 {
 729     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 730
 731     if ( m_cgImageRef )
 732     {
 733         CGImageRelease( m_cgImageRef ) ;
 734         m_cgImageRef = NULL ;
 735     }
 736
 737     if ( m_iconRef )
 738     {
 739         ReleaseIconRef( m_iconRef ) ;
 740         m_iconRef = NULL ;
 741     }
 742
 743 #ifndef __LP64__
 744     if ( m_pictHandle )
 745     {
 746         KillPicture( m_pictHandle ) ;
 747         m_pictHandle = NULL ;
 748     }
 749 #endif
 750
 751     if ( m_hBitmap )
 752     {
 753         CGContextRelease(m_hBitmap);
 754         m_hBitmap = NULL ;
 755     }
 756
 757     if (m_bitmapMask)
 758     {
 759         delete m_bitmapMask;
 760         m_bitmapMask = NULL;
 761     }
 762 }
 763
 764 wxBitmapRefData::~wxBitmapRefData()
 765 {
 766     Free() ;
 767 }
 768
 769 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 770 {
 771     bool created = false ;
 772     int w = icon.GetWidth() ;
 773     int h = icon.GetHeight() ;
 774
 775     Create( icon.GetWidth() , icon.GetHeight() ) ;
 776
 777     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 778     {
 779         IconFamilyHandle iconFamily = NULL ;
 780         Handle imagehandle = NewHandle( 0 ) ;
 781         Handle maskhandle = NewHandle( 0 ) ;
 782
 783         OSType maskType = 0;
 784         OSType dataType = 0;
 785         IconSelectorValue selector = 0 ;
 786
 787         switch (w)
 788         {
 789             case 128:
 790                 dataType = kThumbnail32BitData ;
 791                 maskType = kThumbnail8BitMask ;
 792                 selector = kSelectorAllAvailableData ;
 793                 break;
 794
 795             case 48:
 796                 dataType = kHuge32BitData ;
 797                 maskType = kHuge8BitMask ;
 798                 selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 799                 break;
 800
 801             case 32:
 802                 dataType = kLarge32BitData ;
 803                 maskType = kLarge8BitMask ;
 804                 selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 805                 break;
 806
 807             case 16:
 808                 dataType = kSmall32BitData ;
 809                 maskType = kSmall8BitMask ;
 810                 selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 811                 break;
 812
 813             default:
 814                 break;
 815         }
 816
 817         OSStatus err = IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ;
 818
 819         err = GetIconFamilyData( iconFamily , dataType , imagehandle ) ;
 820         err = GetIconFamilyData( iconFamily , maskType , maskhandle ) ;
 821         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 822         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 823
 824         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 825         {
 826             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 827             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 828
 829             UseAlpha() ;
 830
 831             unsigned char *source = (unsigned char *) *imagehandle ;
 832             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 833             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 834
 835             for ( int y = 0 ; y < h ; ++y )
 836             {
 837                 for ( int x = 0 ; x < w ; ++x )
 838                 {
 839                     unsigned char a = *sourcemask++;
 840                     *destination++ = a;
 841                     source++ ;
 842 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 843                     *destination++ = ( (*source++) * a + 127 ) / 255;
 844                     *destination++ = ( (*source++) * a + 127 ) / 255;
 845                     *destination++ = ( (*source++) * a + 127 ) / 255;
 846 #else
 847                     *destination++ = *source++ ;
 848                     *destination++ = *source++ ;
 849                     *destination++ = *source++ ;
 850 #endif
 851                 }
 852             }
 853
 854             EndRawAccess() ;
 855             DisposeHandle( imagehandle ) ;
 856             DisposeHandle( maskhandle ) ;
 857             created = true ;
 858         }
 859
 860         DisposeHandle( (Handle) iconFamily ) ;
 861     }
 862
 863     if ( !created )
 864     {
 865         wxMemoryDC dc ;
 866         dc.SelectObject( *this ) ;
 867         dc.DrawIcon( icon , 0 , 0 ) ;
 868         dc.SelectObject( wxNullBitmap ) ;
 869     }
 870
 871     return true;
 872 }
 873
 874 wxBitmap::wxBitmap()
 875 {
 876 }
 877
 878 wxBitmap::~wxBitmap()
 879 {
 880 }
 881
 882 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 883 {
 884     m_refData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 885
 886     if ( no_bits == 1 )
 887     {
 888         int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 889         if ( the_width % (sizeof(unsigned char) * 8) )
 890             linesize += sizeof(unsigned char);
 891
 892         unsigned char* linestart = (unsigned char*) bits ;
 893         unsigned char* destptr = (unsigned char*) BeginRawAccess() ;
 894
 895         for ( int y = 0 ; y < the_height ; ++y , linestart += linesize, destptr += M_BITMAPDATA->GetBytesPerRow() )
 896         {
 897             unsigned char* destination = destptr;
 898             int index, bit, mask;
 899
 900             for ( int x = 0 ; x < the_width ; ++x )
 901             {
 902                 index = x / 8 ;
 903                 bit = x % 8 ;
 904                 mask = 1 << bit ;
 905
 906                 if ( linestart[index] & mask )
 907                 {
 908                     *destination++ = 0xFF ;
 909                     *destination++ = 0 ;
 910                     *destination++ = 0 ;
 911                     *destination++ = 0 ;
 912                 }
 913                 else
 914                 {
 915                     *destination++ = 0xFF ;
 916                     *destination++ = 0xFF ;
 917                     *destination++ = 0xFF ;
 918                     *destination++ = 0xFF ;
 919                 }
 920             }
 921         }
 922
 923         EndRawAccess() ;
 924     }
 925     else
 926     {
 927         wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 928     }
 929 }
 930
 931 wxBitmap::wxBitmap(int w, int h, int d)
 932 {
 933     (void)Create(w, h, d);
 934 }
 935
 936 wxBitmap::wxBitmap(const void* data, wxBitmapType type, int width, int height, int depth)
 937 {
 938     (void) Create(data, type, width, height, depth);
 939 }
 940
 941 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 942 {
 943     LoadFile(filename, type);
 944 }
 945
 946 wxObjectRefData* wxBitmap::CreateRefData() const
 947 {
 948     return new wxBitmapRefData;
 949 }
 950
 951 wxObjectRefData* wxBitmap::CloneRefData(const wxObjectRefData* data) const
 952 {
 953     return new wxBitmapRefData(*wx_static_cast(const wxBitmapRefData *, data));
 954 }
 955
 956 void * wxBitmap::GetRawAccess() const
 957 {
 958     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 959
 960     return M_BITMAPDATA->GetRawAccess() ;
 961 }
 962
 963 void * wxBitmap::BeginRawAccess()
 964 {
 965     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 966
 967     return M_BITMAPDATA->BeginRawAccess() ;
 968 }
 969
 970 void wxBitmap::EndRawAccess()
 971 {
 972     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 973
 974     M_BITMAPDATA->EndRawAccess() ;
 975 }
 976
 977 CGImageRef wxBitmap::CreateCGImage() const
 978 {
 979     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 980
 981     return M_BITMAPDATA->CreateCGImage() ;
 982 }
 983
 984 IconRef wxBitmap::GetIconRef() const
 985 {
 986     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 987
 988     return M_BITMAPDATA->GetIconRef() ;
 989 }
 990
 991 IconRef wxBitmap::CreateIconRef() const
 992 {
 993     IconRef icon = GetIconRef();
 994     verify_noerr( AcquireIconRef(icon) );
 995     return icon;
 996 }
 997
 998 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
 999 {
1000     wxCHECK_MSG( Ok() &&
1001                 (rect.x >= 0) && (rect.y >= 0) &&
1002                 (rect.x+rect.width <= GetWidth()) &&
1003                 (rect.y+rect.height <= GetHeight()),
1004                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
1005
1006     wxBitmap ret( rect.width, rect.height, GetDepth() );
1007     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
1008
1009     int destwidth = rect.width ;
1010     int destheight = rect.height ;
1011
1012     {
1013         unsigned char *sourcedata = (unsigned char*) GetRawAccess() ;
1014         unsigned char *destdata = (unsigned char*) ret.BeginRawAccess() ;
1015         wxASSERT( (sourcedata != NULL) && (destdata != NULL) ) ;
1016
1017         int sourcelinesize = GetBitmapData()->GetBytesPerRow() ;
1018         int destlinesize = ret.GetBitmapData()->GetBytesPerRow() ;
1019         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
1020         unsigned char *dest = destdata ;
1021
1022         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
1023         {
1024             memcpy( dest , source , destlinesize ) ;
1025         }
1026     }
1027
1028     ret.EndRawAccess() ;
1029
1030     if ( M_BITMAPDATA->m_bitmapMask )
1031     {
1032         wxMemoryBuffer maskbuf ;
1033         int rowBytes = GetBestBytesPerRow( destwidth * kMaskBytesPerPixel );
1034         size_t maskbufsize = rowBytes * destheight ;
1035
1036         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow() ;
1037         int destlinesize = rowBytes ;
1038
1039         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
1040         unsigned char *destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
1041         wxASSERT( (source != NULL) && (destdata != NULL) ) ;
1042
1043         source += rect.x * kMaskBytesPerPixel + rect.y * sourcelinesize ;
1044         unsigned char *dest = destdata ;
1045
1046         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
1047         {
1048             memcpy( dest , source , destlinesize ) ;
1049         }
1050
1051         maskbuf.UngetWriteBuf( maskbufsize ) ;
1052         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
1053     }
1054     else if ( HasAlpha() )
1055         ret.UseAlpha() ;
1056
1057     return ret;
1058 }
1059
1060 bool wxBitmap::Create(int w, int h, int d)
1061 {
1062     UnRef();
1063
1064     if ( d < 0 )
1065         d = wxDisplayDepth() ;
1066
1067     m_refData = new wxBitmapRefData( w , h , d );
1068
1069     return M_BITMAPDATA->Ok() ;
1070 }
1071
1072 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
1073 {
1074     UnRef();
1075
1076     wxBitmapHandler *handler = FindHandler(type);
1077
1078     if ( handler )
1079     {
1080         m_refData = new wxBitmapRefData;
1081
1082         return handler->LoadFile(this, filename, type, -1, -1);
1083     }
1084     else
1085     {
1086 #if wxUSE_IMAGE
1087         wxImage loadimage(filename, type);
1088         if (loadimage.Ok())
1089         {
1090             *this = loadimage;
1091
1092             return true;
1093         }
1094 #endif
1095     }
1096
1097     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1098
1099     return false;
1100 }
1101
1102 bool wxBitmap::Create(const void* data, wxBitmapType type, int width, int height, int depth)
1103 {
1104     UnRef();
1105
1106     m_refData = new wxBitmapRefData;
1107
1108     wxBitmapHandler *handler = FindHandler(type);
1109
1110     if ( handler == NULL )
1111     {
1112         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1113
1114         return false;
1115     }
1116
1117     return handler->Create(this, data, type, width, height, depth);
1118 }
1119
1120 #if wxUSE_IMAGE
1121
1122 wxBitmap::wxBitmap(const wxImage& image, int depth)
1123 {
1124     wxCHECK_RET( image.Ok(), wxT("invalid image") );
1125
1126     // width and height of the device-dependent bitmap
1127     int width = image.GetWidth();
1128     int height = image.GetHeight();
1129
1130     m_refData = new wxBitmapRefData( width , height , depth ) ;
1131
1132     // Create picture
1133
1134     bool hasAlpha = false ;
1135
1136     if ( image.HasMask() )
1137     {
1138         // takes precedence, don't mix with alpha info
1139     }
1140     else
1141     {
1142         hasAlpha = image.HasAlpha() ;
1143     }
1144
1145     if ( hasAlpha )
1146         UseAlpha() ;
1147
1148     unsigned char* destinationstart = (unsigned char*) BeginRawAccess() ;
1149     register unsigned char* data = image.GetData();
1150     if ( destinationstart != NULL && data != NULL )
1151     {
1152         const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
1153         for (int y = 0; y < height; destinationstart += M_BITMAPDATA->GetBytesPerRow(), y++)
1154         {
1155             unsigned char * destination = destinationstart;
1156             for (int x = 0; x < width; x++)
1157             {
1158                 if ( hasAlpha )
1159                 {
1160                     const unsigned char a = *alpha++;
1161                     *destination++ = a ;
1162
1163 #if wxMAC_USE_PREMULTIPLIED_ALPHA
1164                     *destination++ = ((*data++) * a + 127) / 255 ;
1165                     *destination++ = ((*data++) * a + 127) / 255 ;
1166                     *destination++ = ((*data++) * a + 127) / 255 ;
1167 #else
1168                     *destination++ = *data++ ;
1169                     *destination++ = *data++ ;
1170                     *destination++ = *data++ ;
1171 #endif
1172                 }
1173                 else
1174                 {
1175                     *destination++ = 0xFF ;
1176                     *destination++ = *data++ ;
1177                     *destination++ = *data++ ;
1178                     *destination++ = *data++ ;
1179                 }
1180             }
1181         }
1182
1183         EndRawAccess() ;
1184     }
1185     if ( image.HasMask() )
1186         SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
1187 }
1188
1189 wxImage wxBitmap::ConvertToImage() const
1190 {
1191     wxImage image;
1192
1193     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
1194
1195     // create an wxImage object
1196     int width = GetWidth();
1197     int height = GetHeight();
1198     image.Create( width, height );
1199
1200     unsigned char *data = image.GetData();
1201     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
1202
1203     unsigned char* sourcestart = (unsigned char*) GetRawAccess() ;
1204
1205     bool hasAlpha = false ;
1206     bool hasMask = false ;
1207     int maskBytesPerRow = 0 ;
1208     unsigned char *alpha = NULL ;
1209     unsigned char *mask = NULL ;
1210
1211     if ( HasAlpha() )
1212         hasAlpha = true ;
1213
1214     if ( GetMask() )
1215     {
1216         hasMask = true ;
1217         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1218         maskBytesPerRow = GetMask()->GetBytesPerRow() ;
1219     }
1220
1221     if ( hasAlpha )
1222     {
1223         image.SetAlpha() ;
1224         alpha = image.GetAlpha() ;
1225     }
1226
1227     int index = 0;
1228
1229     // The following masking algorithm is the same as well in msw/gtk:
1230     // the colour used as transparent one in wxImage and the one it is
1231     // replaced with when it actually occurs in the bitmap
1232     static const int MASK_RED = 1;
1233     static const int MASK_GREEN = 2;
1234     static const int MASK_BLUE = 3;
1235     static const int MASK_BLUE_REPLACEMENT = 2;
1236
1237     for (int yy = 0; yy < height; yy++ , sourcestart += M_BITMAPDATA->GetBytesPerRow() , mask += maskBytesPerRow )
1238     {
1239         unsigned char * maskp = mask ;
1240         unsigned char * source = sourcestart;
1241         unsigned char a, r, g, b;
1242         long color;
1243
1244         for (int xx = 0; xx < width; xx++)
1245         {
1246             color = *((long*) source) ;
1247 #ifdef WORDS_BIGENDIAN
1248             a = ((color&0xFF000000) >> 24) ;
1249             r = ((color&0x00FF0000) >> 16) ;
1250             g = ((color&0x0000FF00) >> 8) ;
1251             b = (color&0x000000FF);
1252 #else
1253             b = ((color&0xFF000000) >> 24) ;
1254             g = ((color&0x00FF0000) >> 16) ;
1255             r = ((color&0x0000FF00) >> 8) ;
1256             a = (color&0x000000FF);
1257 #endif
1258             if ( hasMask )
1259             {
1260                 if ( *maskp++ == 0xFF )
1261                 {
1262                     r = MASK_RED ;
1263                     g = MASK_GREEN ;
1264                     b = MASK_BLUE ;
1265                 }
1266                 else if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1267                     b = MASK_BLUE_REPLACEMENT ;
1268             }
1269             else if ( hasAlpha )
1270             {
1271                 *alpha++ = a ;
1272 #if wxMAC_USE_PREMULTIPLIED_ALPHA
1273                 // this must be non-premultiplied data
1274                 if ( a != 0xFF && a!= 0 )
1275                 {
1276                     r = r * 255 / a;
1277                     g = g * 255 / a;
1278                     b = b * 255 / a;
1279                 }
1280 #endif
1281             }
1282
1283             data[index    ] = r ;
1284             data[index + 1] = g ;
1285             data[index + 2] = b ;
1286
1287             index += 3;
1288             source += 4 ;
1289         }
1290     }
1291
1292     if ( hasMask )
1293         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1294
1295     return image;
1296 }
1297
1298 #endif //wxUSE_IMAGE
1299
1300 bool wxBitmap::SaveFile( const wxString& filename,
1301     wxBitmapType type, const wxPalette *palette ) const
1302 {
1303     bool success = false;
1304     wxBitmapHandler *handler = FindHandler(type);
1305
1306     if ( handler )
1307     {
1308         success = handler->SaveFile(this, filename, type, palette);
1309     }
1310     else
1311     {
1312 #if wxUSE_IMAGE
1313         wxImage image = ConvertToImage();
1314         success = image.SaveFile(filename, type);
1315 #else
1316         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1317 #endif
1318     }
1319
1320     return success;
1321 }
1322
1323 bool wxBitmap::IsOk() const
1324 {
1325    return (M_BITMAPDATA && M_BITMAPDATA->Ok());
1326 }
1327
1328 int wxBitmap::GetHeight() const
1329 {
1330    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1331
1332    return M_BITMAPDATA->GetHeight();
1333 }
1334
1335 int wxBitmap::GetWidth() const
1336 {
1337    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1338
1339    return M_BITMAPDATA->GetWidth() ;
1340 }
1341
1342 int wxBitmap::GetDepth() const
1343 {
1344    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1345
1346    return M_BITMAPDATA->GetDepth();
1347 }
1348
1349 wxMask *wxBitmap::GetMask() const
1350 {
1351    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1352
1353    return M_BITMAPDATA->m_bitmapMask;
1354 }
1355
1356 bool wxBitmap::HasAlpha() const
1357 {
1358    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1359
1360    return M_BITMAPDATA->HasAlpha() ;
1361 }
1362
1363 void wxBitmap::SetWidth(int w)
1364 {
1365     AllocExclusive();
1366     M_BITMAPDATA->SetWidth(w);
1367 }
1368
1369 void wxBitmap::SetHeight(int h)
1370 {
1371     AllocExclusive();
1372     M_BITMAPDATA->SetHeight(h);
1373 }
1374
1375 void wxBitmap::SetDepth(int d)
1376 {
1377     AllocExclusive();
1378     M_BITMAPDATA->SetDepth(d);
1379 }
1380
1381 void wxBitmap::SetOk(bool isOk)
1382 {
1383     AllocExclusive();
1384     M_BITMAPDATA->SetOk(isOk);
1385 }
1386
1387 #if wxUSE_PALETTE
1388 wxPalette *wxBitmap::GetPalette() const
1389 {
1390    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1391
1392    return &M_BITMAPDATA->m_bitmapPalette;
1393 }
1394
1395 void wxBitmap::SetPalette(const wxPalette& palette)
1396 {
1397     AllocExclusive();
1398     M_BITMAPDATA->m_bitmapPalette = palette ;
1399 }
1400 #endif // wxUSE_PALETTE
1401
1402 void wxBitmap::SetMask(wxMask *mask)
1403 {
1404     AllocExclusive();
1405     // Remove existing mask if there is one.
1406     delete M_BITMAPDATA->m_bitmapMask;
1407
1408     M_BITMAPDATA->m_bitmapMask = mask ;
1409 }
1410
1411 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1412 {
1413     wxUnusedVar(mask);
1414
1415     return WXHBITMAP(M_BITMAPDATA->GetBitmapContext());
1416 }
1417
1418 // ----------------------------------------------------------------------------
1419 // wxMask
1420 // ----------------------------------------------------------------------------
1421
1422 wxMask::wxMask()
1423 {
1424     Init() ;
1425 }
1426
1427 wxMask::wxMask(const wxMask &tocopy)
1428 {
1429     Init();
1430
1431     m_bytesPerRow = tocopy.m_bytesPerRow;
1432     m_width = tocopy.m_width;
1433     m_height = tocopy.m_height;
1434
1435     size_t size = m_bytesPerRow * m_height;
1436     unsigned char* dest = (unsigned char*)m_memBuf.GetWriteBuf( size );
1437     unsigned char* source = (unsigned char*)tocopy.m_memBuf.GetData();
1438     memcpy( dest, source, size );
1439     m_memBuf.UngetWriteBuf( size ) ;
1440     RealizeNative() ;
1441 }
1442
1443 // Construct a mask from a bitmap and a colour indicating
1444 // the transparent area
1445 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
1446 {
1447     Init() ;
1448     Create( bitmap, colour );
1449 }
1450
1451 // Construct a mask from a mono bitmap (copies the bitmap).
1452 wxMask::wxMask( const wxBitmap& bitmap )
1453 {
1454     Init() ;
1455     Create( bitmap );
1456 }
1457
1458 // Construct a mask from a mono bitmap (copies the bitmap).
1459
1460 wxMask::wxMask( const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1461 {
1462     Init() ;
1463     Create( data, width , height , bytesPerRow );
1464 }
1465
1466 wxMask::~wxMask()
1467 {
1468     if ( m_maskBitmap )
1469     {
1470         CGContextRelease( (CGContextRef) m_maskBitmap );
1471         m_maskBitmap = NULL ;
1472     }
1473 }
1474
1475 void wxMask::Init()
1476 {
1477     m_width = m_height = m_bytesPerRow = 0 ;
1478     m_maskBitmap = NULL ;
1479 }
1480
1481 void *wxMask::GetRawAccess() const
1482 {
1483     return m_memBuf.GetData() ;
1484 }
1485
1486 // The default ColorTable for k8IndexedGrayPixelFormat in Intel appears to be broken, so we'll use an non-indexed
1487 // bitmap mask instead; in order to keep the code simple, the change applies to PowerPC implementations as well
1488
1489 void wxMask::RealizeNative()
1490 {
1491     if ( m_maskBitmap )
1492     {
1493         CGContextRelease( (CGContextRef) m_maskBitmap );
1494        m_maskBitmap = NULL ;
1495     }
1496
1497     CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceGray();
1498     // from MouseTracking sample :
1499     // Ironically, due to a bug in CGImageCreateWithMask, you cannot use
1500     // CGColorSpaceCreateWithName(kCGColorSpaceGenericGray) at this point!
1501
1502     m_maskBitmap = CGBitmapContextCreate((char*) m_memBuf.GetData(), m_width, m_height, 8, m_bytesPerRow, colorspace,
1503         kCGImageAlphaNone );
1504     CGColorSpaceRelease( colorspace );
1505     wxASSERT_MSG( m_maskBitmap , wxT("Unable to create CGBitmapContext context") ) ;
1506 }
1507
1508 // Create a mask from a mono bitmap (copies the bitmap).
1509
1510 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1511 {
1512     m_memBuf = data ;
1513     m_width = width ;
1514     m_height = height ;
1515     m_bytesPerRow = bytesPerRow ;
1516
1517     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1518
1519     RealizeNative() ;
1520
1521     return true ;
1522 }
1523
1524 // Create a mask from a mono bitmap (copies the bitmap).
1525 bool wxMask::Create(const wxBitmap& bitmap)
1526 {
1527     m_width = bitmap.GetWidth() ;
1528     m_height = bitmap.GetHeight() ;
1529     m_bytesPerRow = GetBestBytesPerRow( m_width * kMaskBytesPerPixel ) ;
1530
1531     size_t size = m_bytesPerRow * m_height ;
1532     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1533     wxASSERT( destdatabase != NULL ) ;
1534
1535     memset( destdatabase , 0 , size ) ;
1536     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1537
1538     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1539     {
1540         unsigned char *destdata = destdatabase ;
1541         unsigned char r, g, b;
1542
1543         for ( int x = 0 ; x < m_width ; ++x )
1544         {
1545             srcdata++ ;
1546             r = *srcdata++ ;
1547             g = *srcdata++ ;
1548             b = *srcdata++ ;
1549
1550             if ( ( r + g + b ) > 0x10 )
1551                 *destdata++ = 0xFF ;
1552             else
1553                 *destdata++ = 0x00 ;
1554         }
1555     }
1556
1557     m_memBuf.UngetWriteBuf( size ) ;
1558     RealizeNative() ;
1559
1560     return true;
1561 }
1562
1563 // Create a mask from a bitmap and a colour indicating
1564 // the transparent area
1565 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1566 {
1567     m_width = bitmap.GetWidth() ;
1568     m_height = bitmap.GetHeight() ;
1569     m_bytesPerRow = GetBestBytesPerRow( m_width * kMaskBytesPerPixel ) ;
1570
1571     size_t size = m_bytesPerRow * m_height ;
1572     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1573     wxASSERT( destdatabase != NULL ) ;
1574
1575     memset( destdatabase , 0 , size ) ;
1576     unsigned char * srcdatabase = (unsigned char*) bitmap.GetRawAccess() ;
1577     size_t sourceBytesRow = bitmap.GetBitmapData()->GetBytesPerRow();
1578
1579     for ( int y = 0 ; y < m_height ; ++y , srcdatabase+= sourceBytesRow, destdatabase += m_bytesPerRow)
1580     {
1581         unsigned char *srcdata = srcdatabase ;
1582         unsigned char *destdata = destdatabase ;
1583         unsigned char r, g, b;
1584
1585         for ( int x = 0 ; x < m_width ; ++x )
1586         {
1587             srcdata++ ;
1588             r = *srcdata++ ;
1589             g = *srcdata++ ;
1590             b = *srcdata++ ;
1591
1592             if ( colour == wxColour( r , g , b ) )
1593                 *destdata++ = 0xFF ;
1594             else
1595                 *destdata++ = 0x00 ;
1596         }
1597     }
1598
1599     m_memBuf.UngetWriteBuf( size ) ;
1600     RealizeNative() ;
1601
1602     return true;
1603 }
1604
1605 WXHBITMAP wxMask::GetHBITMAP() const
1606 {
1607     return m_maskBitmap ;
1608 }
1609
1610 // ----------------------------------------------------------------------------
1611 // wxBitmapHandler
1612 // ----------------------------------------------------------------------------
1613
1614 IMPLEMENT_ABSTRACT_CLASS(wxBitmapHandler, wxBitmapHandlerBase)
1615
1616 // ----------------------------------------------------------------------------
1617 // Standard Handlers
1618 // ----------------------------------------------------------------------------
1619
1620 #ifndef __LP64__
1621
1622 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1623 {
1624     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1625
1626 public:
1627     inline wxPICTResourceHandler()
1628     {
1629         SetName(wxT("Macintosh Pict resource"));
1630         SetExtension(wxEmptyString);
1631         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1632     };
1633
1634     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1635           int desiredWidth, int desiredHeight);
1636 };
1637
1638 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1639
1640
1641 bool wxPICTResourceHandler::LoadFile(wxBitmap *bitmap,
1642                                      const wxString& name,
1643                                      long WXUNUSED(flags),
1644                                      int WXUNUSED(desiredWidth),
1645                                      int WXUNUSED(desiredHeight))
1646 {
1647 #if wxUSE_METAFILE
1648     Str255 theName ;
1649     wxMacStringToPascal( name , theName ) ;
1650
1651     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1652     if ( thePict )
1653     {
1654         wxMetafile mf ;
1655
1656         mf.SetPICT( thePict ) ;
1657         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1658         wxMemoryDC dc ;
1659         dc.SelectObject( *bitmap ) ;
1660         mf.Play( &dc ) ;
1661         dc.SelectObject( wxNullBitmap ) ;
1662
1663         return true ;
1664     }
1665 #endif
1666
1667     return false ;
1668 }
1669 #endif
1670
1671 void wxBitmap::InitStandardHandlers()
1672 {
1673 #ifndef __LP64__
1674     AddHandler( new wxPICTResourceHandler ) ;
1675 #endif
1676     AddHandler( new wxICONResourceHandler ) ;
1677 }
1678
1679 // ----------------------------------------------------------------------------
1680 // raw bitmap access support
1681 // ----------------------------------------------------------------------------
1682
1683 void *wxBitmap::GetRawData(wxPixelDataBase& data, int WXUNUSED(bpp))
1684 {
1685     if ( !Ok() )
1686         // no bitmap, no data (raw or otherwise)
1687         return NULL;
1688
1689     data.m_width = GetWidth() ;
1690     data.m_height = GetHeight() ;
1691     data.m_stride = GetBitmapData()->GetBytesPerRow() ;
1692
1693     return BeginRawAccess() ;
1694 }
1695
1696 void wxBitmap::UngetRawData(wxPixelDataBase& WXUNUSED(dataBase))
1697 {
1698     EndRawAccess() ;
1699 }
1700
1701 void wxBitmap::UseAlpha()
1702 {
1703     // remember that we are using alpha channel:
1704     // we'll need to create a proper mask in UngetRawData()
1705     M_BITMAPDATA->UseAlpha( true );
1706 }