src/mac/carbon/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #include "wx/icon.h"
  16 #include "wx/log.h"
  17 #include "wx/image.h"
  18 #include "wx/metafile.h"
  19 #include "wx/xpmdecod.h"
  20
  21 #include "wx/rawbmp.h"
  22
  23 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
  24 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
  25 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject)
  26
  27 #ifdef __DARWIN__
  28     #include <ApplicationServices/ApplicationServices.h>
  29 #else
  30     #include <PictUtils.h>
  31 #endif
  32
  33 #include "wx/mac/uma.h"
  34 #include "wx/dcmemory.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 // we don't dare use premultiplied alpha yet
  47 #define wxMAC_USE_PREMULTIPLIED_ALPHA 0
  48
  49 #if wxUSE_BMPBUTTON
  50
  51 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
  52 {
  53     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
  54     if ( bitmap.Ok() )
  55     {
  56         wxBitmapRefData * bmap = bitmap.GetBitmapData() ;
  57         if ( bmap == NULL )
  58             return ;
  59
  60         if ( ( bmap->HasNativeSize() && forceType == 0 ) || forceType == kControlContentIconRef )
  61         {
  62             wxBitmap scaleBmp ;
  63             wxBitmapRefData* bmp = bmap ;
  64
  65             if ( !bmap->HasNativeSize() )
  66             {
  67                 // as PICT conversion will only result in a 16x16 icon, let's attempt
  68                 // a few scales for better results
  69
  70                 int w = bitmap.GetWidth() ;
  71                 int h = bitmap.GetHeight() ;
  72                 int sz = wxMax( w , h ) ;
  73                 if ( sz == 24 || sz == 64 )
  74                 {
  75                     scaleBmp = wxBitmap( bitmap.ConvertToImage().Scale( w * 2 , h * 2 ) ) ;
  76                     bmp = scaleBmp.GetBitmapData() ;
  77                 }
  78             }
  79
  80             info->contentType = kControlContentIconRef ;
  81             info->u.iconRef = bmp->GetIconRef() ;
  82             AcquireIconRef( info->u.iconRef ) ;
  83         }
  84 #if defined( __WXMAC_OSX__ ) && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
  85         else if ( forceType == kControlContentCGImageRef )
  86         {
  87             info->contentType = kControlContentCGImageRef ;
  88             info->u.imageRef = (CGImageRef) bmap->CGImageCreate() ;
  89         }
  90 #endif
  91         else
  92         {
  93             info->contentType = kControlContentPictHandle ;
  94             info->u.picture = bmap->GetPictHandle() ;
  95         }
  96     }
  97 }
  98
  99 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
 100 {
 101     if ( info->contentType == kControlContentIconRef )
 102     {
 103         ReleaseIconRef( info->u.iconRef ) ;
 104     }
 105     else if ( info->contentType == kControlNoContent )
 106     {
 107         // there's no bitmap at all, fall through silently
 108     }
 109     else if ( info->contentType == kControlContentPictHandle )
 110     {
 111         // owned by the bitmap, no release here
 112     }
 113 #if defined( __WXMAC_OSX__ ) && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
 114     else if ( info->contentType == kControlContentCGImageRef )
 115     {
 116         CGImageRelease( info->u.imageRef ) ;
 117     }
 118 #endif
 119     else
 120     {
 121         wxFAIL_MSG(wxT("Unexpected bitmap type") ) ;
 122     }
 123 }
 124
 125 #endif //wxUSE_BMPBUTTON
 126
 127 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
 128
 129 void wxBitmapRefData::Init()
 130 {
 131     m_width = 0 ;
 132     m_height = 0 ;
 133     m_depth = 0 ;
 134     m_ok = false ;
 135     m_bitmapMask = NULL ;
 136
 137 #ifdef __WXMAC_OSX__
 138     m_cgImageRef = NULL ;
 139 #endif
 140
 141     m_iconRef = NULL ;
 142     m_pictHandle = NULL ;
 143     m_hBitmap = NULL ;
 144     m_hMaskBitmap = NULL;
 145     m_maskBytesPerRow = 0 ;
 146
 147     m_rawAccessCount = 0 ;
 148     m_hasAlpha = false;
 149 }
 150
 151 wxBitmapRefData::wxBitmapRefData()
 152 {
 153     Init() ;
 154 }
 155
 156 wxBitmapRefData::wxBitmapRefData( int w , int h , int d )
 157 {
 158     Init() ;
 159     Create( w , h , d ) ;
 160 }
 161
 162 bool wxBitmapRefData::Create( int w , int h , int d )
 163 {
 164     m_width = w ;
 165     m_height = h ;
 166     m_depth = d ;
 167
 168     m_bytesPerRow = w * 4 ;
 169     size_t size = m_bytesPerRow * h ;
 170     void* data = m_memBuf.GetWriteBuf( size ) ;
 171     memset( data , 0 , size ) ;
 172     m_memBuf.UngetWriteBuf( size ) ;
 173
 174     m_hBitmap = NULL ;
 175     Rect rect = { 0 , 0 , m_height , m_width } ;
 176     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 177         (char*) data , m_bytesPerRow ) ) ;
 178     wxASSERT_MSG( m_hBitmap , wxT("Unable to create GWorld context") ) ;
 179
 180     m_ok = ( m_hBitmap != NULL ) ;
 181
 182     return m_ok ;
 183 }
 184
 185 void wxBitmapRefData::UseAlpha( bool use )
 186 {
 187     if ( m_hasAlpha == use )
 188         return ;
 189
 190     m_hasAlpha = use ;
 191     if ( m_hasAlpha )
 192     {
 193         wxASSERT( m_hMaskBitmap == NULL ) ;
 194
 195         int width = GetWidth() ;
 196         int height = GetHeight() ;
 197         m_maskBytesPerRow = ( width * 4 + 3 ) & 0xFFFFFFC ;
 198         size_t size = height * m_maskBytesPerRow ;
 199         unsigned char * data = (unsigned char * ) m_maskMemBuf.GetWriteBuf( size ) ;
 200         wxASSERT( data != NULL ) ;
 201
 202         memset( data , 0 , size ) ;
 203         Rect rect = { 0 , 0 , height , width } ;
 204         verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hMaskBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 205             (char*) data , m_maskBytesPerRow ) ) ;
 206         wxASSERT_MSG( m_hMaskBitmap , wxT("Unable to create GWorld context for alpha mask") ) ;
 207         m_maskMemBuf.UngetWriteBuf(size) ;
 208
 209 #if !wxMAC_USE_CORE_GRAPHICS
 210         UpdateAlphaMask() ;
 211 #endif
 212     }
 213     else
 214     {
 215         DisposeGWorld( m_hMaskBitmap ) ;
 216         m_hMaskBitmap = NULL ;
 217         m_maskBytesPerRow = 0 ;
 218     }
 219 }
 220
 221 void *wxBitmapRefData::GetRawAccess() const
 222 {
 223     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 224     return m_memBuf.GetData() ;
 225 }
 226
 227 void *wxBitmapRefData::BeginRawAccess()
 228 {
 229     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") ) ;
 230     wxASSERT( m_rawAccessCount == 0 ) ;
 231     wxASSERT_MSG( m_pictHandle == NULL && m_iconRef == NULL ,
 232         wxT("Currently, modifing bitmaps that are used in controls already is not supported") ) ;
 233
 234     ++m_rawAccessCount ;
 235
 236 #ifdef __WXMAC_OSX__
 237     // we must destroy an existing cached image, as
 238     // the bitmap data may change now
 239     if ( m_cgImageRef )
 240     {
 241         CGImageRelease( m_cgImageRef ) ;
 242         m_cgImageRef = NULL ;
 243     }
 244 #endif
 245
 246     return m_memBuf.GetData() ;
 247 }
 248
 249 void wxBitmapRefData::EndRawAccess()
 250 {
 251     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 252     wxASSERT( m_rawAccessCount == 1 ) ;
 253
 254     --m_rawAccessCount ;
 255
 256 #if !wxMAC_USE_CORE_GRAPHICS
 257     UpdateAlphaMask() ;
 258 #endif
 259 }
 260
 261 bool wxBitmapRefData::HasNativeSize()
 262 {
 263     int w = GetWidth() ;
 264     int h = GetHeight() ;
 265     int sz = wxMax( w , h ) ;
 266
 267     return ( sz == 128 || sz == 48 || sz == 32 || sz == 16 );
 268 }
 269
 270 IconRef wxBitmapRefData::GetIconRef()
 271 {
 272     if ( m_iconRef == NULL )
 273     {
 274         // Create Icon Family Handle
 275
 276         IconFamilyHandle iconFamily = NULL ;
 277
 278 #ifdef WORDS_BIGENDIAN
 279         iconFamily = (IconFamilyHandle) NewHandle( 8 ) ;
 280         (**iconFamily).resourceType = kIconFamilyType ;
 281         (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
 282 #else
 283         // test this solution on big endian as well
 284         iconFamily = (IconFamilyHandle) NewHandle( 0 ) ;
 285 #endif
 286
 287         int w = GetWidth() ;
 288         int h = GetHeight() ;
 289         int sz = wxMax( w , h ) ;
 290
 291         OSType dataType = 0 ;
 292         OSType maskType = 0 ;
 293
 294         switch (sz)
 295         {
 296             case 128:
 297                 dataType = kThumbnail32BitData ;
 298                 maskType = kThumbnail8BitMask ;
 299                 break;
 300
 301             case 48:
 302                 dataType = kHuge32BitData ;
 303                 maskType = kHuge8BitMask ;
 304                 break;
 305
 306             case 32:
 307                 dataType = kLarge32BitData ;
 308                 maskType = kLarge8BitMask ;
 309                 break;
 310
 311             case 16:
 312                 dataType = kSmall32BitData ;
 313                 maskType = kSmall8BitMask ;
 314                 break;
 315
 316             default:
 317                 break;
 318         }
 319
 320         if ( dataType != 0 )
 321         {
 322             // setup the header properly
 323
 324             Handle data = NULL ;
 325             Handle maskdata = NULL ;
 326             unsigned char * maskptr = NULL ;
 327             unsigned char * ptr = NULL ;
 328             size_t datasize, masksize ;
 329
 330             datasize = sz * sz * 4 ;
 331             data = NewHandle( datasize ) ;
 332             HLock( data ) ;
 333             ptr = (unsigned char*) *data ;
 334             memset( ptr , 0, datasize ) ;
 335
 336             masksize = sz * sz ;
 337             maskdata = NewHandle( masksize ) ;
 338             HLock( maskdata ) ;
 339             maskptr = (unsigned char*) *maskdata ;
 340             memset( maskptr , 0 , masksize ) ;
 341
 342             bool hasAlpha = HasAlpha() ;
 343             wxMask *mask = m_bitmapMask ;
 344             unsigned char * source = (unsigned char*) GetRawAccess() ;
 345             unsigned char * masksource = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 346
 347             for ( int y = 0 ; y < h ; ++y )
 348             {
 349                 unsigned char * dest = ptr + y * sz * 4 ;
 350                 unsigned char * maskdest = maskptr + y * sz ;
 351                 unsigned char a, r, g, b;
 352
 353                 for ( int x = 0 ; x < w ; ++x )
 354                 {
 355                     a = *source ++ ;
 356                     r = *source ++ ;
 357                     g = *source ++ ;
 358                     b = *source ++ ;
 359
 360                     *dest++ = 0 ;
 361                     *dest++ = r ;
 362                     *dest++ = g ;
 363                     *dest++ = b ;
 364
 365                     if ( mask )
 366                     {
 367                         *maskdest++ = 0xFF - *masksource++ ;
 368                         masksource++ ;
 369                         masksource++ ;
 370                     }
 371                     else if ( hasAlpha )
 372                         *maskdest++ = a ;
 373                     else
 374                         *maskdest++ = 0xFF ;
 375                 }
 376             }
 377
 378             OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 379             wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 380
 381             err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 382             wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 383
 384             HUnlock( data ) ;
 385             HUnlock( maskdata ) ;
 386             DisposeHandle( data ) ;
 387             DisposeHandle( maskdata ) ;
 388         }
 389         else
 390         {
 391             PicHandle pic = GetPictHandle() ;
 392             SetIconFamilyData( iconFamily, 'PICT' , (Handle) pic ) ;
 393         }
 394
 395         // transform into IconRef
 396
 397         static int iconCounter = 2 ;
 398
 399         OSStatus err = RegisterIconRefFromIconFamily( 'WXNG' , (OSType) iconCounter, iconFamily, &m_iconRef ) ;
 400         wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 401
 402         // we have to retain a reference, as Unregister will decrement it
 403         AcquireIconRef( m_iconRef ) ;
 404         UnregisterIconRef( 'WXNG' , (OSType) iconCounter ) ;
 405         DisposeHandle( (Handle) iconFamily ) ;
 406         ++iconCounter ;
 407     }
 408
 409     return m_iconRef ;
 410 }
 411
 412 PicHandle wxBitmapRefData::GetPictHandle()
 413 {
 414     if ( m_pictHandle == NULL )
 415     {
 416         CGrafPtr origPort = NULL ;
 417         GDHandle origDev = NULL ;
 418         GWorldPtr wp = NULL ;
 419         GWorldPtr mask = NULL ;
 420         int height = GetHeight() ;
 421         int width = GetWidth() ;
 422
 423         Rect rect = { 0 , 0 , height , width } ;
 424         RgnHandle clipRgn = NULL ;
 425
 426         GetGWorld( &origPort , &origDev ) ;
 427         wp = GetHBITMAP( &mask ) ;
 428
 429         if ( mask )
 430         {
 431             GWorldPtr monoworld ;
 432             clipRgn = NewRgn() ;
 433             OSStatus err = NewGWorld( &monoworld , 1 , &rect , NULL , NULL , 0 ) ;
 434             verify_noerr(err) ;
 435             LockPixels( GetGWorldPixMap( monoworld ) ) ;
 436             LockPixels( GetGWorldPixMap( mask ) ) ;
 437             SetGWorld( monoworld , NULL ) ;
 438
 439             RGBColor white = { 0xffff , 0xffff , 0xffff } ;
 440             RGBColor black = { 0x0000 , 0x0000 , 0x0000 } ;
 441             RGBForeColor( &black ) ;
 442             RGBBackColor( &white ) ;
 443
 444             CopyBits(GetPortBitMapForCopyBits(mask),
 445                     GetPortBitMapForCopyBits(monoworld),
 446                     &rect,
 447                     &rect,
 448                     srcCopy, NULL);
 449             BitMapToRegion( clipRgn , (BitMap*) *GetGWorldPixMap( monoworld ) ) ;
 450
 451             UnlockPixels( GetGWorldPixMap( monoworld ) ) ;
 452             UnlockPixels( GetGWorldPixMap( mask ) ) ;
 453             DisposeGWorld( monoworld ) ;
 454         }
 455
 456         SetGWorld( wp , NULL ) ;
 457         Rect portRect ;
 458         GetPortBounds( wp , &portRect ) ;
 459         m_pictHandle = OpenPicture(&portRect);
 460
 461         if (m_pictHandle)
 462         {
 463             RGBColor white = { 0xffff , 0xffff , 0xffff } ;
 464             RGBColor black = { 0x0000 , 0x0000 , 0x0000 } ;
 465
 466             RGBForeColor( &black ) ;
 467             RGBBackColor( &white ) ;
 468
 469             if ( clipRgn )
 470                 SetClip( clipRgn ) ;
 471
 472             LockPixels( GetGWorldPixMap( wp ) ) ;
 473             CopyBits(GetPortBitMapForCopyBits(wp),
 474                     GetPortBitMapForCopyBits(wp),
 475                     &portRect,
 476                     &portRect,
 477                     srcCopy,clipRgn);
 478             UnlockPixels( GetGWorldPixMap( wp ) ) ;
 479             ClosePicture();
 480         }
 481
 482         SetGWorld( origPort , origDev ) ;
 483         if ( clipRgn )
 484             DisposeRgn( clipRgn ) ;
 485     }
 486
 487     return m_pictHandle ;
 488 }
 489
 490 #ifdef __WXMAC_OSX__
 491 void wxMacMemoryBufferReleaseProc(void *info, const void *data, size_t size)
 492 {
 493     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
 494
 495     wxASSERT( data == membuf->GetData() ) ;
 496
 497     delete membuf ;
 498 }
 499
 500 CGImageRef wxBitmapRefData::CGImageCreate() const
 501 {
 502     wxASSERT( m_ok ) ;
 503     wxASSERT( m_rawAccessCount >= 0 ) ;
 504     CGImageRef image ;
 505     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 506     {
 507         size_t imageSize = m_width * m_height * 4 ;
 508         void * dataBuffer = m_memBuf.GetData() ;
 509         int w = m_width ;
 510         int h = m_height ;
 511         CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 512         wxMemoryBuffer* membuf = NULL ;
 513
 514         if ( m_bitmapMask )
 515         {
 516             alphaInfo = kCGImageAlphaFirst ;
 517             membuf = new wxMemoryBuffer( imageSize ) ;
 518             memcpy( membuf->GetData() , dataBuffer , imageSize ) ;
 519             unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 520             int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 521             unsigned char *destalpha = (unsigned char *) membuf->GetData() ;
 522             for ( int y = 0 ; y < h ; ++y , sourcemaskstart += maskrowbytes)
 523             {
 524                 unsigned char *sourcemask = sourcemaskstart ;
 525                 for ( int x = 0 ; x < w ; ++x , sourcemask+=3 , destalpha += 4 )
 526                 {
 527                     *destalpha = 0xFF - *sourcemask ;
 528                 }
 529             }
 530         }
 531         else
 532         {
 533             if ( m_hasAlpha )
 534             {
 535 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 536                 alphaInfo = kCGImageAlphaPremultipliedFirst ;
 537 #else
 538                 alphaInfo = kCGImageAlphaFirst ;
 539 #endif
 540             }
 541
 542             membuf = new wxMemoryBuffer( m_memBuf ) ;
 543         }
 544
 545         CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 546         CGDataProviderRef dataProvider =
 547             CGDataProviderCreateWithData(
 548                 membuf , (const void *)membuf->GetData() , imageSize,
 549                 wxMacMemoryBufferReleaseProc );
 550         image =
 551             ::CGImageCreate(
 552                 w, h, 8 , 32 , 4 * m_width , colorSpace, alphaInfo ,
 553                 dataProvider, NULL , false , kCGRenderingIntentDefault );
 554         CGDataProviderRelease( dataProvider);
 555     }
 556     else
 557     {
 558         image = m_cgImageRef ;
 559         CGImageRetain( image ) ;
 560     }
 561
 562     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 563     {
 564         // we keep it for later use
 565         m_cgImageRef = image ;
 566         CGImageRetain( image ) ;
 567     }
 568
 569     return image ;
 570 }
 571 #endif
 572
 573 GWorldPtr wxBitmapRefData::GetHBITMAP(GWorldPtr* mask) const
 574 {
 575     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 576     if ( mask )
 577     {
 578         *mask = NULL ;
 579         if ( m_bitmapMask )
 580         {
 581             *mask = (GWorldPtr) m_bitmapMask->GetHBITMAP() ;
 582         }
 583         else if ( m_hasAlpha )
 584         {
 585 #if !wxMAC_USE_CORE_GRAPHICS
 586             if ( m_rawAccessCount > 0 )
 587                 UpdateAlphaMask() ;
 588 #else
 589             // this structure is not kept in synch when using CG, so if something
 590             // is really accessing the GrafPorts, we have to sync it
 591             UpdateAlphaMask() ;
 592 #endif
 593
 594             *mask = m_hMaskBitmap ;
 595         }
 596     }
 597
 598     return m_hBitmap ;
 599 }
 600
 601 void wxBitmapRefData::UpdateAlphaMask() const
 602 {
 603     if ( m_hasAlpha )
 604     {
 605         unsigned char *sourcemask = (unsigned char *) GetRawAccess() ;
 606         unsigned char *destalphabase = (unsigned char *) m_maskMemBuf.GetData() ;
 607
 608         int h = GetHeight() ;
 609         int w = GetWidth() ;
 610
 611         for ( int y = 0 ; y < h ; ++y , destalphabase += m_maskBytesPerRow )
 612         {
 613             unsigned char* destalpha = destalphabase ;
 614
 615             for ( int x = 0 ; x < w ; ++x , sourcemask += 4 )
 616             {
 617                 // we must have 24 bit depth for non quartz smooth alpha
 618                 *destalpha++ = 255 ;
 619                 *destalpha++ = 255  - *sourcemask ;
 620                 *destalpha++ = 255  - *sourcemask ;
 621                 *destalpha++ = 255  - *sourcemask ;
 622             }
 623         }
 624     }
 625 }
 626
 627 void wxBitmapRefData::Free()
 628 {
 629     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 630
 631 #ifdef __WXMAC_OSX__
 632     if ( m_cgImageRef )
 633     {
 634         CGImageRelease( m_cgImageRef ) ;
 635         m_cgImageRef = NULL ;
 636     }
 637 #endif
 638
 639     if ( m_iconRef )
 640     {
 641         ReleaseIconRef( m_iconRef ) ;
 642         m_iconRef = NULL ;
 643     }
 644
 645     if ( m_pictHandle )
 646     {
 647         KillPicture( m_pictHandle ) ;
 648         m_pictHandle = NULL ;
 649     }
 650
 651     if ( m_hBitmap )
 652     {
 653         DisposeGWorld( MAC_WXHBITMAP(m_hBitmap) ) ;
 654         m_hBitmap = NULL ;
 655     }
 656
 657     if ( m_hMaskBitmap )
 658     {
 659         DisposeGWorld( MAC_WXHBITMAP(m_hMaskBitmap) ) ;
 660         m_hMaskBitmap = NULL ;
 661     }
 662
 663     if (m_bitmapMask)
 664     {
 665         delete m_bitmapMask;
 666         m_bitmapMask = NULL;
 667     }
 668 }
 669
 670 wxBitmapRefData::~wxBitmapRefData()
 671 {
 672     Free() ;
 673 }
 674
 675 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 676 {
 677     bool created = false ;
 678     int w = icon.GetWidth() ;
 679     int h = icon.GetHeight() ;
 680
 681     Create( icon.GetWidth() , icon.GetHeight() ) ;
 682
 683     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 684     {
 685         IconFamilyHandle iconFamily = NULL ;
 686         Handle imagehandle = NewHandle( 0 ) ;
 687         Handle maskhandle = NewHandle( 0 ) ;
 688
 689         OSType maskType = 0;
 690         OSType dataType = 0;
 691         IconSelectorValue selector = 0 ;
 692
 693         switch (w)
 694         {
 695             case 128:
 696                 dataType = kThumbnail32BitData ;
 697                 maskType = kThumbnail8BitMask ;
 698                 selector = kSelectorAllAvailableData ;
 699                 break;
 700
 701             case 48:
 702                 dataType = kHuge32BitData ;
 703                 maskType = kHuge8BitMask ;
 704                 selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 705                 break;
 706
 707             case 32:
 708                 dataType = kLarge32BitData ;
 709                 maskType = kLarge8BitMask ;
 710                 selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 711                 break;
 712
 713             case 16:
 714                 dataType = kSmall32BitData ;
 715                 maskType = kSmall8BitMask ;
 716                 selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 717                 break;
 718
 719             default:
 720                 break;
 721         }
 722
 723         OSStatus err = IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ;
 724
 725         err = GetIconFamilyData( iconFamily , dataType , imagehandle ) ;
 726         err = GetIconFamilyData( iconFamily , maskType , maskhandle ) ;
 727         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 728         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 729
 730         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 731         {
 732             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 733             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 734
 735             UseAlpha() ;
 736
 737             unsigned char *source = (unsigned char *) *imagehandle ;
 738             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 739             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 740
 741             for ( int y = 0 ; y < h ; ++y )
 742             {
 743                 for ( int x = 0 ; x < w ; ++x )
 744                 {
 745                     *destination++ = *sourcemask++ ;
 746                     source++ ;
 747                     *destination++ = *source++ ;
 748                     *destination++ = *source++ ;
 749                     *destination++ = *source++ ;
 750                 }
 751             }
 752
 753             EndRawAccess() ;
 754             DisposeHandle( imagehandle ) ;
 755             DisposeHandle( maskhandle ) ;
 756             created = true ;
 757         }
 758
 759         DisposeHandle( (Handle) iconFamily ) ;
 760     }
 761
 762     if ( !created )
 763     {
 764         wxMemoryDC dc ;
 765         dc.SelectObject( *this ) ;
 766         dc.DrawIcon( icon , 0 , 0 ) ;
 767         dc.SelectObject( wxNullBitmap ) ;
 768     }
 769
 770     return true;
 771 }
 772
 773 wxBitmap::wxBitmap()
 774 {
 775 }
 776
 777 wxBitmap::~wxBitmap()
 778 {
 779 }
 780
 781 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 782 {
 783     m_refData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 784
 785     if ( no_bits == 1 )
 786     {
 787         int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 788         if ( the_width % (sizeof(unsigned char) * 8) )
 789             linesize += sizeof(unsigned char);
 790
 791         unsigned char* linestart = (unsigned char*) bits ;
 792         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 793
 794         for ( int y = 0 ; y < the_height ; ++y , linestart += linesize )
 795         {
 796             int index, bit, mask;
 797
 798             for ( int x = 0 ; x < the_width ; ++x )
 799             {
 800                 index = x / 8 ;
 801                 bit = x % 8 ;
 802                 mask = 1 << bit ;
 803
 804                 if ( linestart[index] & mask )
 805                 {
 806                     *destination++ = 0xFF ;
 807                     *destination++ = 0 ;
 808                     *destination++ = 0 ;
 809                     *destination++ = 0 ;
 810                 }
 811                 else
 812                 {
 813                     *destination++ = 0xFF ;
 814                     *destination++ = 0xFF ;
 815                     *destination++ = 0xFF ;
 816                     *destination++ = 0xFF ;
 817                 }
 818             }
 819         }
 820
 821         EndRawAccess() ;
 822     }
 823     else
 824     {
 825         wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 826     }
 827 }
 828
 829 wxBitmap::wxBitmap(int w, int h, int d)
 830 {
 831     (void)Create(w, h, d);
 832 }
 833
 834 wxBitmap::wxBitmap(void *data, wxBitmapType type, int width, int height, int depth)
 835 {
 836     (void) Create(data, type, width, height, depth);
 837 }
 838
 839 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 840 {
 841     LoadFile(filename, type);
 842 }
 843
 844 wxBitmap::wxBitmap(const char **bits)
 845 {
 846     (void) CreateFromXpm(bits);
 847 }
 848
 849 wxBitmap::wxBitmap(char **bits)
 850 {
 851     (void) CreateFromXpm((const char **)bits);
 852 }
 853
 854 void * wxBitmap::GetRawAccess() const
 855 {
 856     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 857
 858     return M_BITMAPDATA->GetRawAccess() ;
 859 }
 860
 861 void * wxBitmap::BeginRawAccess()
 862 {
 863     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 864
 865     return M_BITMAPDATA->BeginRawAccess() ;
 866 }
 867
 868 void wxBitmap::EndRawAccess()
 869 {
 870     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 871
 872     M_BITMAPDATA->EndRawAccess() ;
 873 }
 874
 875 bool wxBitmap::CreateFromXpm(const char **bits)
 876 {
 877 #if wxUSE_IMAGE
 878     wxCHECK_MSG( bits != NULL, false, wxT("invalid bitmap data") )
 879
 880     wxXPMDecoder decoder;
 881     wxImage img = decoder.ReadData(bits);
 882     wxCHECK_MSG( img.Ok(), false, wxT("invalid bitmap data") )
 883
 884     *this = wxBitmap(img);
 885
 886     return true;
 887 #else
 888
 889     return false;
 890 #endif
 891 }
 892
 893 #ifdef __WXMAC_OSX__
 894 WXCGIMAGEREF wxBitmap::CGImageCreate() const
 895 {
 896     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 897
 898     return M_BITMAPDATA->CGImageCreate() ;
 899 }
 900 #endif
 901
 902 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
 903 {
 904     wxCHECK_MSG( Ok() &&
 905                 (rect.x >= 0) && (rect.y >= 0) &&
 906                 (rect.x+rect.width <= GetWidth()) &&
 907                 (rect.y+rect.height <= GetHeight()),
 908                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 909
 910     wxBitmap ret( rect.width, rect.height, GetDepth() );
 911     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 912
 913     int sourcewidth = GetWidth() ;
 914     int destwidth = rect.width ;
 915     int destheight = rect.height ;
 916
 917     {
 918         unsigned char *sourcedata = (unsigned char*) GetRawAccess() ;
 919         unsigned char *destdata = (unsigned char*) ret.BeginRawAccess() ;
 920         wxASSERT( (sourcedata != NULL) && (destdata != NULL) ) ;
 921
 922         int sourcelinesize = sourcewidth * 4 ;
 923         int destlinesize = destwidth * 4 ;
 924         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
 925         unsigned char *dest = destdata ;
 926
 927         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 928         {
 929             memcpy( dest , source , destlinesize ) ;
 930         }
 931     }
 932
 933     ret.EndRawAccess() ;
 934
 935     if ( M_BITMAPDATA->m_bitmapMask )
 936     {
 937         wxMemoryBuffer maskbuf ;
 938         int rowBytes = ( destwidth + 3 ) & 0xFFFFFFC ;
 939         size_t maskbufsize = rowBytes * destheight ;
 940
 941         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow() ;
 942         int destlinesize = rowBytes ;
 943
 944         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
 945         unsigned char *destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
 946         wxASSERT( (source != NULL) && (destdata != NULL) ) ;
 947
 948         source += rect.x + rect.y * sourcelinesize ;
 949         unsigned char *dest = destdata ;
 950
 951         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 952         {
 953             for (int xx = 0; xx < destlinesize; xx++ )
 954                 *(dest+xx) = 0xFF - *(source+xx*3) ;
 955         }
 956
 957         maskbuf.UngetWriteBuf( maskbufsize ) ;
 958         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
 959     }
 960     else if ( HasAlpha() )
 961         ret.UseAlpha() ;
 962
 963     return ret;
 964 }
 965
 966 bool wxBitmap::Create(int w, int h, int d)
 967 {
 968     UnRef();
 969
 970     if ( d < 0 )
 971         d = wxDisplayDepth() ;
 972
 973     m_refData = new wxBitmapRefData( w , h , d );
 974
 975     return M_BITMAPDATA->Ok() ;
 976 }
 977
 978 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
 979 {
 980     UnRef();
 981
 982     wxBitmapHandler *handler = FindHandler(type);
 983
 984     if ( handler )
 985     {
 986         m_refData = new wxBitmapRefData;
 987
 988         return handler->LoadFile(this, filename, type, -1, -1);
 989     }
 990     else
 991     {
 992 #if wxUSE_IMAGE
 993         wxImage loadimage(filename, type);
 994         if (loadimage.Ok())
 995         {
 996             *this = loadimage;
 997
 998             return true;
 999         }
1000 #endif
1001     }
1002
1003     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1004
1005     return false;
1006 }
1007
1008 bool wxBitmap::Create(void *data, wxBitmapType type, int width, int height, int depth)
1009 {
1010     UnRef();
1011
1012     m_refData = new wxBitmapRefData;
1013
1014     wxBitmapHandler *handler = FindHandler(type);
1015
1016     if ( handler == NULL )
1017     {
1018         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1019
1020         return false;
1021     }
1022
1023     return handler->Create(this, data, type, width, height, depth);
1024 }
1025
1026 #if wxUSE_IMAGE
1027
1028 wxBitmap::wxBitmap(const wxImage& image, int depth)
1029 {
1030     wxCHECK_RET( image.Ok(), wxT("invalid image") )
1031
1032     // width and height of the device-dependent bitmap
1033     int width = image.GetWidth();
1034     int height = image.GetHeight();
1035
1036     m_refData = new wxBitmapRefData( width , height , depth ) ;
1037
1038     // Create picture
1039
1040     bool hasAlpha = false ;
1041
1042     if ( image.HasMask() )
1043     {
1044         // takes precedence, don't mix with alpha info
1045     }
1046     else
1047     {
1048         hasAlpha = image.HasAlpha() ;
1049     }
1050
1051     if ( hasAlpha )
1052         UseAlpha() ;
1053
1054     unsigned char* destination = (unsigned char*) BeginRawAccess() ;
1055     register unsigned char* data = image.GetData();
1056     const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
1057
1058     for (int y = 0; y < height; y++)
1059     {
1060         for (int x = 0; x < width; x++)
1061         {
1062             if ( hasAlpha )
1063             {
1064                 const unsigned char a = *alpha++;
1065                 *destination++ = a ;
1066
1067 #if wxMAC_USE_PREMULTIPLIED_ALPHA
1068                 *destination++ = ((*data++) * a + 127) / 255 ;
1069                 *destination++ = ((*data++) * a + 127) / 255 ;
1070                 *destination++ = ((*data++) * a + 127) / 255 ;
1071 #else
1072                 *destination++ = *data++ ;
1073                 *destination++ = *data++ ;
1074                 *destination++ = *data++ ;
1075 #endif
1076             }
1077             else
1078             {
1079                 *destination++ = 0xFF ;
1080                 *destination++ = *data++ ;
1081                 *destination++ = *data++ ;
1082                 *destination++ = *data++ ;
1083             }
1084         }
1085     }
1086
1087     EndRawAccess() ;
1088     if ( image.HasMask() )
1089         SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
1090 }
1091
1092 wxImage wxBitmap::ConvertToImage() const
1093 {
1094     wxImage image;
1095
1096     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
1097
1098     // create an wxImage object
1099     int width = GetWidth();
1100     int height = GetHeight();
1101     image.Create( width, height );
1102
1103     unsigned char *data = image.GetData();
1104     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
1105
1106     unsigned char* source = (unsigned char*) GetRawAccess() ;
1107
1108     bool hasAlpha = false ;
1109     bool hasMask = false ;
1110     int maskBytesPerRow = 0 ;
1111     unsigned char *alpha = NULL ;
1112     unsigned char *mask = NULL ;
1113
1114     if ( HasAlpha() )
1115         hasAlpha = true ;
1116
1117     if ( GetMask() )
1118     {
1119         hasMask = true ;
1120         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1121         maskBytesPerRow = GetMask()->GetBytesPerRow() ;
1122     }
1123
1124     if ( hasAlpha )
1125     {
1126         image.SetAlpha() ;
1127         alpha = image.GetAlpha() ;
1128     }
1129
1130     int index = 0;
1131
1132     // The following masking algorithm is the same as well in msw/gtk:
1133     // the colour used as transparent one in wxImage and the one it is
1134     // replaced with when it actually occurs in the bitmap
1135     static const int MASK_RED = 1;
1136     static const int MASK_GREEN = 2;
1137     static const int MASK_BLUE = 3;
1138     static const int MASK_BLUE_REPLACEMENT = 2;
1139
1140     for (int yy = 0; yy < height; yy++ , mask += maskBytesPerRow )
1141     {
1142         unsigned char * maskp = mask ;
1143         unsigned char a, r, g, b;
1144         long color;
1145
1146         for (int xx = 0; xx < width; xx++)
1147         {
1148             color = *((long*) source) ;
1149             a = ((color&0xFF000000) >> 24) ;
1150             r = ((color&0x00FF0000) >> 16) ;
1151             g = ((color&0x0000FF00) >> 8) ;
1152             b = (color&0x000000FF);
1153
1154             if ( hasMask )
1155             {
1156                 if ( *maskp++ == 0xFF )
1157                 {
1158                     r = MASK_RED ;
1159                     g = MASK_GREEN ;
1160                     b = MASK_BLUE ;
1161                 }
1162                 else if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1163                     b = MASK_BLUE_REPLACEMENT ;
1164
1165                 maskp++ ;
1166                 maskp++ ;
1167             }
1168             else if ( hasAlpha )
1169                 *alpha++ = a ;
1170
1171             data[index    ] = r ;
1172             data[index + 1] = g ;
1173             data[index + 2] = b ;
1174
1175             index += 3;
1176             source += 4 ;
1177         }
1178     }
1179
1180     if ( hasMask )
1181         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1182
1183     return image;
1184 }
1185
1186 #endif //wxUSE_IMAGE
1187
1188 bool wxBitmap::SaveFile( const wxString& filename,
1189     wxBitmapType type, const wxPalette *palette ) const
1190 {
1191     bool success = false;
1192     wxBitmapHandler *handler = FindHandler(type);
1193
1194     if ( handler )
1195     {
1196         success = handler->SaveFile(this, filename, type, palette);
1197     }
1198     else
1199     {
1200 #if wxUSE_IMAGE
1201         wxImage image = ConvertToImage();
1202         success = image.SaveFile(filename, type);
1203 #else
1204         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1205 #endif
1206     }
1207
1208     return success;
1209 }
1210
1211 bool wxBitmap::Ok() const
1212 {
1213    return (M_BITMAPDATA && M_BITMAPDATA->Ok());
1214 }
1215
1216 int wxBitmap::GetHeight() const
1217 {
1218    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1219
1220    return M_BITMAPDATA->GetHeight();
1221 }
1222
1223 int wxBitmap::GetWidth() const
1224 {
1225    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1226
1227    return M_BITMAPDATA->GetWidth() ;
1228 }
1229
1230 int wxBitmap::GetDepth() const
1231 {
1232    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1233
1234    return M_BITMAPDATA->GetDepth();
1235 }
1236
1237 #if WXWIN_COMPATIBILITY_2_4
1238 int wxBitmap::GetQuality() const
1239 {
1240     return 0;
1241 }
1242
1243 void wxBitmap::SetQuality(int WXUNUSED(quality))
1244 {
1245 }
1246 #endif
1247
1248 wxMask *wxBitmap::GetMask() const
1249 {
1250    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1251
1252    return M_BITMAPDATA->m_bitmapMask;
1253 }
1254
1255 bool wxBitmap::HasAlpha() const
1256 {
1257    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1258
1259    return M_BITMAPDATA->HasAlpha() ;
1260 }
1261
1262 void wxBitmap::SetWidth(int w)
1263 {
1264     if (!M_BITMAPDATA)
1265         m_refData = new wxBitmapRefData;
1266
1267     M_BITMAPDATA->SetWidth(w);
1268 }
1269
1270 void wxBitmap::SetHeight(int h)
1271 {
1272     if (!M_BITMAPDATA)
1273         m_refData = new wxBitmapRefData;
1274
1275     M_BITMAPDATA->SetHeight(h);
1276 }
1277
1278 void wxBitmap::SetDepth(int d)
1279 {
1280     if (!M_BITMAPDATA)
1281         m_refData = new wxBitmapRefData;
1282
1283     M_BITMAPDATA->SetDepth(d);
1284 }
1285
1286 void wxBitmap::SetOk(bool isOk)
1287 {
1288     if (!M_BITMAPDATA)
1289         m_refData = new wxBitmapRefData;
1290
1291     M_BITMAPDATA->SetOk(isOk);
1292 }
1293
1294 #if wxUSE_PALETTE
1295 wxPalette *wxBitmap::GetPalette() const
1296 {
1297    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1298
1299    return &M_BITMAPDATA->m_bitmapPalette;
1300 }
1301
1302 void wxBitmap::SetPalette(const wxPalette& palette)
1303 {
1304     if (!M_BITMAPDATA)
1305         m_refData = new wxBitmapRefData;
1306
1307     M_BITMAPDATA->m_bitmapPalette = palette ;
1308 }
1309 #endif // wxUSE_PALETTE
1310
1311 void wxBitmap::SetMask(wxMask *mask)
1312 {
1313     if (!M_BITMAPDATA)
1314         m_refData = new wxBitmapRefData;
1315
1316     // Remove existing mask if there is one.
1317     delete M_BITMAPDATA->m_bitmapMask;
1318
1319     M_BITMAPDATA->m_bitmapMask = mask ;
1320 }
1321
1322 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1323 {
1324     return WXHBITMAP(M_BITMAPDATA->GetHBITMAP((GWorldPtr*)mask));
1325 }
1326
1327 // ----------------------------------------------------------------------------
1328 // wxMask
1329 // ----------------------------------------------------------------------------
1330
1331 wxMask::wxMask()
1332 {
1333     Init() ;
1334 }
1335
1336 // Construct a mask from a bitmap and a colour indicating
1337 // the transparent area
1338 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
1339 {
1340     Init() ;
1341     Create( bitmap, colour );
1342 }
1343
1344 // Construct a mask from a mono bitmap (copies the bitmap).
1345 wxMask::wxMask( const wxBitmap& bitmap )
1346 {
1347     Init() ;
1348     Create( bitmap );
1349 }
1350
1351 // Construct a mask from a mono bitmap (copies the bitmap).
1352 wxMask::wxMask( const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1353 {
1354     Init() ;
1355     Create( data, width , height , bytesPerRow );
1356 }
1357
1358 wxMask::~wxMask()
1359 {
1360     if ( m_maskBitmap )
1361     {
1362         DisposeGWorld( (GWorldPtr)m_maskBitmap ) ;
1363         m_maskBitmap = NULL ;
1364     }
1365 }
1366
1367 void wxMask::Init()
1368 {
1369     m_width = m_height = m_bytesPerRow = 0 ;
1370     m_maskBitmap = NULL ;
1371 }
1372
1373 void *wxMask::GetRawAccess() const
1374 {
1375     return m_memBuf.GetData() ;
1376 }
1377
1378 // The default ColorTable for k8IndexedGrayPixelFormat in Intel appears to be broken, so we'll use an non-indexed
1379 // bitmap mask instead; in order to keep the code simple, the change applies to PowerPC implementations as well
1380
1381 void wxMask::RealizeNative()
1382 {
1383     if ( m_maskBitmap )
1384     {
1385        DisposeGWorld( (GWorldPtr)m_maskBitmap ) ;
1386        m_maskBitmap = NULL ;
1387     }
1388
1389     Rect rect = { 0 , 0 , m_height , m_width } ;
1390
1391     OSStatus err = NewGWorldFromPtr(
1392         (GWorldPtr*) &m_maskBitmap , k24RGBPixelFormat , &rect , NULL , NULL , 0 ,
1393         (char*) m_memBuf.GetData() , m_bytesPerRow ) ;
1394     verify_noerr( err ) ;
1395 }
1396
1397 // Create a mask from a mono bitmap (copies the bitmap).
1398 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1399 {
1400     m_memBuf = data ;
1401     m_width = width ;
1402     m_height = height ;
1403     m_bytesPerRow = bytesPerRow ;
1404
1405     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1406
1407     RealizeNative() ;
1408
1409     return true ;
1410 }
1411
1412 // Create a mask from a mono bitmap (copies the bitmap).
1413 bool wxMask::Create(const wxBitmap& bitmap)
1414 {
1415     m_width = bitmap.GetWidth() ;
1416     m_height = bitmap.GetHeight() ;
1417     m_bytesPerRow = ( m_width * 3 + 3 ) & 0xFFFFFFC ;
1418
1419     size_t size = m_bytesPerRow * m_height ;
1420     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1421     wxASSERT( destdatabase != NULL ) ;
1422
1423     memset( destdatabase , 0 , size ) ;
1424     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1425
1426     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1427     {
1428         unsigned char *destdata = destdatabase ;
1429         unsigned char r, g, b;
1430
1431         for ( int x = 0 ; x < m_width ; ++x )
1432         {
1433             srcdata++ ;
1434             r = *srcdata++ ;
1435             g = *srcdata++ ;
1436             b = *srcdata++ ;
1437
1438             if ( ( r + g + b ) > 0x10 )
1439             {
1440                 *destdata++ = 0xFF ;
1441                 *destdata++ = 0xFF ;
1442                 *destdata++ = 0xFF ;
1443             }
1444             else
1445             {
1446                 *destdata++ = 0x00 ;
1447                 *destdata++ = 0x00 ;
1448                 *destdata++ = 0x00 ;
1449             }
1450         }
1451     }
1452
1453     m_memBuf.UngetWriteBuf( size ) ;
1454     RealizeNative() ;
1455
1456     return true;
1457 }
1458
1459 // Create a mask from a bitmap and a colour indicating
1460 // the transparent area
1461 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1462 {
1463     m_width = bitmap.GetWidth() ;
1464     m_height = bitmap.GetHeight() ;
1465     m_bytesPerRow = ( m_width * 3 + 3 ) & 0xFFFFFFC ;
1466
1467     size_t size = m_bytesPerRow * m_height ;
1468     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1469     wxASSERT( destdatabase != NULL ) ;
1470
1471     memset( destdatabase , 0 , size ) ;
1472     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1473
1474     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow)
1475     {
1476         unsigned char *destdata = destdatabase ;
1477         unsigned char r, g, b;
1478
1479         for ( int x = 0 ; x < m_width ; ++x )
1480         {
1481             srcdata++ ;
1482             r = *srcdata++ ;
1483             g = *srcdata++ ;
1484             b = *srcdata++ ;
1485
1486             if ( colour == wxColour( r , g , b ) )
1487             {
1488                 *destdata++ = 0xFF ;
1489                 *destdata++ = 0xFF ;
1490                 *destdata++ = 0xFF ;
1491             }
1492             else
1493             {
1494                 *destdata++ = 0x00 ;
1495                 *destdata++ = 0x00 ;
1496                 *destdata++ = 0x00 ;
1497             }
1498         }
1499     }
1500
1501     m_memBuf.UngetWriteBuf( size ) ;
1502     RealizeNative() ;
1503
1504     return true;
1505 }
1506
1507 WXHBITMAP wxMask::GetHBITMAP() const
1508 {
1509     return m_maskBitmap ;
1510 }
1511
1512 // ----------------------------------------------------------------------------
1513 // wxBitmapHandler
1514 // ----------------------------------------------------------------------------
1515
1516 wxBitmapHandler::~wxBitmapHandler()
1517 {
1518 }
1519
1520 bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
1521 {
1522     return false;
1523 }
1524
1525 bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1526         int desiredWidth, int desiredHeight)
1527 {
1528     return false;
1529 }
1530
1531 bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
1532 {
1533     return false;
1534 }
1535
1536 // ----------------------------------------------------------------------------
1537 // Standard Handlers
1538 // ----------------------------------------------------------------------------
1539
1540 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1541 {
1542     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1543
1544 public:
1545     inline wxPICTResourceHandler()
1546     {
1547         SetName(wxT("Macintosh Pict resource"));
1548         SetExtension(wxEmptyString);
1549         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1550     };
1551
1552     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1553           int desiredWidth, int desiredHeight);
1554 };
1555
1556 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1557
1558
1559 bool wxPICTResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1560           int desiredWidth, int desiredHeight)
1561 {
1562 #if wxUSE_METAFILE
1563     Str255 theName ;
1564     wxMacStringToPascal( name , theName ) ;
1565
1566     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1567     if ( thePict )
1568     {
1569         wxMetafile mf ;
1570
1571         mf.SetHMETAFILE( (WXHMETAFILE) thePict ) ;
1572         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1573         wxMemoryDC dc ;
1574         dc.SelectObject( *bitmap ) ;
1575         mf.Play( &dc ) ;
1576         dc.SelectObject( wxNullBitmap ) ;
1577
1578         return true ;
1579     }
1580 #endif
1581
1582     return false ;
1583 }
1584
1585 void wxBitmap::InitStandardHandlers()
1586 {
1587     AddHandler( new wxPICTResourceHandler ) ;
1588     AddHandler( new wxICONResourceHandler ) ;
1589 }
1590
1591 // ----------------------------------------------------------------------------
1592 // raw bitmap access support
1593 // ----------------------------------------------------------------------------
1594
1595 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1596 {
1597     if ( !Ok() )
1598         // no bitmap, no data (raw or otherwise)
1599         return NULL;
1600
1601     data.m_width = GetWidth() ;
1602     data.m_height = GetHeight() ;
1603     data.m_stride = GetWidth() * 4 ;
1604
1605     return GetRawAccess() ;
1606 }
1607
1608 void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
1609 {
1610     if ( !Ok() )
1611         return;
1612
1613     // TODO: if we have some information about the API we should check
1614     // this code looks strange...
1615
1616     if ( !M_BITMAPDATA->HasAlpha() )
1617         return;
1618
1619     wxAlphaPixelData& data = (wxAlphaPixelData&)dataBase;
1620     int w = data.GetWidth();
1621     int h = data.GetHeight();
1622
1623     wxBitmap bmpMask( GetWidth(), GetHeight(), 32 );
1624     wxAlphaPixelData dataMask( bmpMask, data.GetOrigin(), wxSize( w, h ) );
1625     wxAlphaPixelData::Iterator pMask( dataMask ), p( data );
1626
1627     for ( int y = 0; y < h; y++ )
1628     {
1629         wxAlphaPixelData::Iterator rowStartMask = pMask;
1630         wxAlphaPixelData::Iterator rowStart = p;
1631
1632         for ( int x = 0; x < w; x++ )
1633         {
1634             const wxAlphaPixelData::Iterator::ChannelType alpha = p.Alpha();
1635
1636             pMask.Red() = alpha;
1637             pMask.Green() = alpha;
1638             pMask.Blue() = alpha;
1639
1640             ++p;
1641             ++pMask;
1642         }
1643
1644         p = rowStart;
1645         p.OffsetY( data, 1 );
1646
1647         pMask = rowStartMask;
1648         pMask.OffsetY( dataMask, 1 );
1649     }
1650
1651     SetMask( new wxMask( bmpMask ) );
1652 }
1653
1654 void wxBitmap::UseAlpha()
1655 {
1656     // remember that we are using alpha channel:
1657     // we'll need to create a proper mask in UngetRawData()
1658     M_BITMAPDATA->UseAlpha( true );
1659 }