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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "bitmap.h"
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17
  18 #include "wx/bitmap.h"
  19 #include "wx/icon.h"
  20 #include "wx/log.h"
  21 #include "wx/image.h"
  22 #include "wx/metafile.h"
  23 #include "wx/xpmdecod.h"
  24
  25 #include "wx/rawbmp.h"
  26
  27 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
  28 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
  29 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject )
  30
  31 #ifdef __DARWIN__
  32     #include <ApplicationServices/ApplicationServices.h>
  33 #else
  34     #include <PictUtils.h>
  35 #endif
  36
  37 #include "wx/mac/uma.h"
  38
  39 #include "wx/dcmemory.h"
  40
  41 // Implementation Notes
  42 // --------------------
  43 //
  44 // we are always working with a 32 bit deep pixel buffer
  45 // under QuickDraw its alpha parts are going to be ignored in the GWorld,
  46 // therefore we have a separate GWorld there for blitting the mask in
  47
  48 // under Quartz then content is transformed into a CGImageRef representing the same data
  49 // which can be transferred to the GPU by the OS for fast rendering
  50
  51 // we don't dare premultiplied alpha yet
  52 #define wxMAC_USE_PREMULTIPLIED_ALPHA 0
  53
  54 #if wxUSE_BMPBUTTON
  55
  56 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
  57 {
  58     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
  59     if ( bitmap.Ok() )
  60     {
  61         wxBitmapRefData * bmap = bitmap.GetBitmapData() ;
  62         if ( bmap == NULL )
  63             return ;
  64
  65         if ( ( bmap->HasNativeSize() && forceType == 0 ) || forceType == kControlContentIconRef )
  66         {
  67             wxBitmap scaleBmp ;
  68
  69             wxBitmapRefData* bmp = bmap ;
  70
  71             if ( !bmap->HasNativeSize() )
  72             {
  73                 // as PICT conversion will only result in a 16x16 icon, let's attempt
  74                 // a few scales for better results
  75
  76                 int w = bitmap.GetWidth() ;
  77                 int h = bitmap.GetHeight() ;
  78                 int sz = wxMax( w , h ) ;
  79                 if ( sz == 24 || sz == 64)
  80                 {
  81                     scaleBmp = wxBitmap( bitmap.ConvertToImage().Scale( w * 2 , h * 2 ) ) ;
  82                     bmp = scaleBmp.GetBitmapData() ;
  83                 }
  84             }
  85
  86             info->contentType = kControlContentIconRef ;
  87             info->u.iconRef = bmp->GetIconRef() ;
  88             AcquireIconRef( info->u.iconRef ) ;
  89         }
  90 #if wxMAC_USE_CORE_GRAPHICS && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
  91         else if ( forceType == kControlContentCGImageRef )
  92         {
  93             info->contentType = kControlContentCGImageRef ;
  94             info->u.imageRef = (CGImageRef) bmap->CGImageCreate() ;
  95         }
  96 #endif
  97         else
  98         {
  99             info->contentType = kControlContentPictHandle ;
 100             info->u.picture = bmap->GetPictHandle() ;
 101         }
 102     }
 103 }
 104
 105 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
 106 {
 107     if ( info->contentType == kControlContentIconRef )
 108     {
 109         ReleaseIconRef( info->u.iconRef ) ;
 110     }
 111     else if ( info->contentType == kControlNoContent )
 112     {
 113         // there's no bitmap at all, fall through silently
 114     }
 115     else if ( info->contentType == kControlContentPictHandle )
 116     {
 117         // owned by the bitmap, no release here
 118     }
 119 #if wxMAC_USE_CORE_GRAPHICS && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
 120     else if ( info->contentType == kControlContentCGImageRef )
 121     {
 122         CGImageRelease( info->u.imageRef ) ;
 123     }
 124 #endif
 125     else
 126     {
 127         wxFAIL_MSG(wxT("Unexpected bitmap type") ) ;
 128     }
 129 }
 130
 131 #endif //wxUSE_BMPBUTTON
 132
 133 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
 134
 135 void wxBitmapRefData::Init()
 136 {
 137     m_width = 0 ;
 138     m_height = 0 ;
 139     m_depth = 0 ;
 140     m_ok = false ;
 141     m_bitmapMask = NULL ;
 142 #if wxMAC_USE_CORE_GRAPHICS
 143     m_cgImageRef = NULL ;
 144 #endif
 145     m_iconRef = NULL ;
 146     m_pictHandle = NULL ;
 147     m_hBitmap = NULL ;
 148     m_hMaskBitmap = NULL;
 149     m_maskBytesPerRow = NULL ;
 150
 151     m_rawAccessCount = 0 ;
 152     m_hasAlpha = false;
 153 }
 154
 155 wxBitmapRefData::wxBitmapRefData()
 156 {
 157     Init() ;
 158 }
 159
 160 wxBitmapRefData::wxBitmapRefData( int w , int h , int d )
 161 {
 162     Init() ;
 163     Create( w , h , d ) ;
 164 }
 165
 166 bool wxBitmapRefData::Create( int w , int h , int d )
 167 {
 168     m_width = w ;
 169     m_height = h ;
 170     m_depth = d ;
 171
 172     m_bytesPerRow = w * 4 ;
 173     size_t size = m_bytesPerRow * h ;
 174     void*  data = m_memBuf.GetWriteBuf(size) ;
 175     memset( data ,  0 , size) ;
 176     m_memBuf.UngetWriteBuf(size) ;
 177
 178     m_hBitmap = NULL ;
 179     Rect rect = { 0 , 0 , m_height , m_width } ;
 180     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 181         (char*) data , m_bytesPerRow ) ) ;
 182     wxASSERT_MSG( m_hBitmap , wxT("Unable to create GWorld context") ) ;
 183     m_ok = ( m_hBitmap != NULL ) ;
 184
 185     return m_ok ;
 186 }
 187
 188 void wxBitmapRefData::UseAlpha( bool use )
 189 {
 190     if ( m_hasAlpha == use )
 191         return ;
 192
 193     m_hasAlpha = use ;
 194     if ( m_hasAlpha )
 195     {
 196         int width = GetWidth() ;
 197         int height = GetHeight() ;
 198         m_maskBytesPerRow = ( width * 4 + 3 ) & 0xFFFFFFC ;
 199         size_t size = height * m_maskBytesPerRow ;
 200         unsigned char * data = (unsigned char * ) m_maskMemBuf.GetWriteBuf( size ) ;
 201         memset( data , 0 , size ) ;
 202         wxASSERT( m_hMaskBitmap == NULL ) ;
 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 #if !wxMAC_USE_CORE_GRAPHICS
 209         UpdateAlphaMask() ;
 210 #endif
 211     }
 212     else
 213     {
 214         DisposeGWorld( m_hMaskBitmap ) ;
 215         m_hMaskBitmap = NULL ;
 216         m_maskBytesPerRow = 0 ;
 217     }
 218 }
 219
 220 void *wxBitmapRefData::GetRawAccess() const
 221 {
 222     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 223     return m_memBuf.GetData() ;
 224 }
 225
 226 void *wxBitmapRefData::BeginRawAccess()
 227 {
 228     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") ) ;
 229     wxASSERT( m_rawAccessCount == 0 ) ;
 230     ++m_rawAccessCount ;
 231     // we must destroy an existing cached image, as
 232     // the bitmap data may change now
 233     wxASSERT_MSG( m_pictHandle == NULL && m_iconRef == NULL ,
 234         wxT("Currently, modifing bitmaps that are used in controls already is not supported") ) ;
 235 #if wxMAC_USE_CORE_GRAPHICS
 236     if ( m_cgImageRef )
 237     {
 238         CGImageRelease( m_cgImageRef ) ;
 239         m_cgImageRef = NULL ;
 240     }
 241 #endif
 242     return m_memBuf.GetData() ;
 243 }
 244
 245 void wxBitmapRefData::EndRawAccess()
 246 {
 247     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 248     wxASSERT( m_rawAccessCount == 1 ) ;
 249     --m_rawAccessCount ;
 250 #if !wxMAC_USE_CORE_GRAPHICS
 251     UpdateAlphaMask() ;
 252 #endif
 253 }
 254
 255 bool wxBitmapRefData::HasNativeSize()
 256 {
 257     int w = GetWidth() ;
 258     int h = GetHeight() ;
 259     int sz = wxMax( w , h ) ;
 260
 261     if ( sz == 128 || sz == 48 || sz == 32 || sz == 16 )
 262         return true ;
 263     return false ;
 264 }
 265
 266 IconRef wxBitmapRefData::GetIconRef()
 267 {
 268     if ( m_iconRef == NULL )
 269     {
 270         // Create Icon Family Handle
 271
 272         IconFamilyHandle iconFamily = NULL ;
 273
 274         iconFamily = (IconFamilyHandle) NewHandle(8) ;
 275         (**iconFamily).resourceType = kIconFamilyType ;
 276         (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
 277
 278         int w = GetWidth() ;
 279         int h = GetHeight() ;
 280         int sz = wxMax( w , h ) ;
 281
 282         OSType dataType = 0 ;
 283         OSType maskType = 0 ;
 284
 285         if ( sz == 128 )
 286         {
 287             dataType = kThumbnail32BitData ;
 288             maskType = kThumbnail8BitMask ;
 289         }
 290         else if ( sz == 48 )
 291         {
 292             dataType = kHuge32BitData ;
 293             maskType = kHuge8BitMask ;
 294         }
 295         else if ( sz == 32 )
 296         {
 297             dataType = kLarge32BitData ;
 298             maskType = kLarge8BitMask ;
 299         }
 300         else if ( sz == 16 )
 301         {
 302             dataType = kSmall32BitData ;
 303             maskType = kSmall8BitMask ;
 304         }
 305
 306         if ( dataType != 0 )
 307         {
 308             // setup the header properly
 309
 310             Handle data = NULL ;
 311             Handle maskdata = NULL ;
 312             unsigned char * maskptr = NULL ;
 313             unsigned char * ptr = NULL ;
 314             size_t size ;
 315             size_t masksize ;
 316
 317             size = sz * sz * 4 ;
 318             data = NewHandle( size) ;
 319             HLock( data ) ;
 320             ptr = (unsigned char*) *data ;
 321             memset( ptr , 0, size ) ;
 322
 323             masksize = sz * sz ;
 324             maskdata = NewHandle( masksize ) ;
 325             HLock( maskdata ) ;
 326             maskptr = (unsigned char*) *maskdata ;
 327             memset( maskptr , 0 , masksize ) ;
 328
 329             bool hasAlpha = HasAlpha() ;
 330             wxMask *mask = m_bitmapMask ;
 331             unsigned char * source = (unsigned char*) GetRawAccess() ;
 332             unsigned char * masksource = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 333             for ( int y = 0 ; y < h ; ++y )
 334             {
 335                 unsigned char * dest = ptr + y * sz * 4 ;
 336                 unsigned char * maskdest = maskptr + y * sz ;
 337                 for ( int x = 0 ; x < w ; ++x )
 338                 {
 339                     unsigned char a = *source ++ ;
 340                     unsigned char r = *source ++ ;
 341                     unsigned char g = *source ++ ;
 342                     unsigned char b = *source ++ ;
 343
 344                     *dest++ = 0 ;
 345                     *dest++ = r ;
 346                     *dest++ = g ;
 347                     *dest++ = b ;
 348
 349                     if ( mask )
 350                         *maskdest++ = *masksource++ ;
 351                     else if ( hasAlpha )
 352                         *maskdest++ = a ;
 353                     else
 354                         *maskdest++ = 0xFF ;
 355                 }
 356             }
 357
 358             OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 359             wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 360
 361             err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 362             wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 363             HUnlock( data ) ;
 364             HUnlock( maskdata ) ;
 365             DisposeHandle( data ) ;
 366             DisposeHandle( maskdata ) ;
 367         }
 368         else
 369         {
 370             PicHandle pic = GetPictHandle() ;
 371             SetIconFamilyData( iconFamily, 'PICT' , (Handle) pic ) ;
 372         }
 373
 374         // transform into IconRef
 375
 376         static int iconCounter = 2 ;
 377 #ifdef __WXDEBUG__
 378         OSStatus err =
 379 #endif
 380             RegisterIconRefFromIconFamily( 'WXNG' , (OSType) iconCounter, iconFamily, &m_iconRef ) ;
 381         wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 382         // we have to retain a reference, as Unregister will decrement it
 383         AcquireIconRef( m_iconRef ) ;
 384         UnregisterIconRef( 'WXNG' , (OSType) iconCounter ) ;
 385         DisposeHandle( (Handle) iconFamily ) ;
 386         ++iconCounter ;
 387     }
 388     return m_iconRef ;
 389 }
 390
 391 PicHandle wxBitmapRefData::GetPictHandle()
 392 {
 393     if ( m_pictHandle == NULL )
 394     {
 395         CGrafPtr        origPort = NULL ;
 396         GDHandle        origDev = NULL ;
 397         GWorldPtr       wp = NULL ;
 398         GWorldPtr       mask = NULL ;
 399         int height = GetHeight() ;
 400         int width = GetWidth() ;
 401
 402         Rect rect = { 0 , 0 , height , width } ;
 403
 404         GetGWorld( &origPort , &origDev ) ;
 405
 406         wp = GetHBITMAP( &mask ) ;
 407
 408         RgnHandle clipRgn = NULL ;
 409
 410         if ( mask )
 411         {
 412             GWorldPtr monoworld ;
 413             clipRgn = NewRgn() ;
 414             OSStatus err = NewGWorld( &monoworld , 1 , &rect , NULL , NULL , 0 ) ;
 415             verify_noerr(err) ;
 416             LockPixels( GetGWorldPixMap( monoworld ) ) ;
 417             LockPixels( GetGWorldPixMap( mask ) ) ;
 418             SetGWorld( monoworld , NULL ) ;
 419             RGBColor       white = { 0xffff ,0xffff , 0xffff } ;
 420             RGBColor       black = { 0x0000 ,0x0000 , 0x0000 } ;
 421             RGBForeColor( &black ) ;
 422             RGBBackColor( &white ) ;
 423             CopyBits(GetPortBitMapForCopyBits(mask),
 424                     GetPortBitMapForCopyBits(monoworld),
 425                     &rect,
 426                     &rect,
 427                     srcCopy,NULL);
 428             BitMapToRegion( clipRgn , (BitMap*) *GetGWorldPixMap( monoworld ) ) ;
 429             UnlockPixels( GetGWorldPixMap( monoworld ) ) ;
 430             UnlockPixels( GetGWorldPixMap( mask ) ) ;
 431             DisposeGWorld( monoworld ) ;
 432         }
 433
 434         SetGWorld( wp , NULL ) ;
 435         Rect portRect ;
 436         GetPortBounds( wp , &portRect ) ;
 437         m_pictHandle = OpenPicture(&portRect);
 438
 439         if(m_pictHandle)
 440         {
 441             RGBColor       white = { 0xffff ,0xffff , 0xffff } ;
 442             RGBColor       black = { 0x0000 ,0x0000 , 0x0000 } ;
 443             RGBForeColor( &black ) ;
 444             RGBBackColor( &white ) ;
 445
 446             if ( clipRgn )
 447                 SetClip( clipRgn ) ;
 448
 449             LockPixels( GetGWorldPixMap( wp ) ) ;
 450             CopyBits(GetPortBitMapForCopyBits(wp),
 451                     GetPortBitMapForCopyBits(wp),
 452                     &portRect,
 453                     &portRect,
 454                     srcCopy,clipRgn);
 455             UnlockPixels( GetGWorldPixMap( wp ) ) ;
 456             ClosePicture();
 457         }
 458         SetGWorld( origPort , origDev ) ;
 459         if ( clipRgn )
 460             DisposeRgn( clipRgn ) ;
 461     }
 462     return m_pictHandle ;
 463 }
 464
 465 #ifdef __WXMAC_OSX__
 466 void wxMacMemoryBufferReleaseProc(void *info, const void *data, size_t size)
 467 {
 468     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
 469     wxASSERT( data == membuf->GetData() ) ;
 470     delete membuf ;
 471 }
 472
 473 CGImageRef wxBitmapRefData::CGImageCreate() const
 474 {
 475     wxASSERT( m_ok ) ;
 476     wxASSERT( m_rawAccessCount >= 0 ) ;
 477     CGImageRef image ;
 478     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 479     {
 480         size_t imageSize = m_width * m_height * 4 ;
 481         void * dataBuffer = m_memBuf.GetData() ;
 482         int w = m_width ;
 483         int h = m_height ;
 484         CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 485         wxMemoryBuffer* membuf = NULL ;
 486
 487         if ( m_bitmapMask )
 488         {
 489             membuf = new wxMemoryBuffer( imageSize ) ;
 490             memcpy( membuf->GetData() , dataBuffer , imageSize ) ;
 491             unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 492             int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 493             unsigned char *destalpha = (unsigned char *) membuf->GetData() ;
 494             alphaInfo = kCGImageAlphaFirst ;
 495             for ( int y = 0 ; y < h ; ++y , sourcemaskstart += maskrowbytes)
 496             {
 497                 unsigned char *sourcemask = sourcemaskstart ;
 498                 for( int x = 0 ; x < w ; ++x , sourcemask++ , destalpha += 4 )
 499                 {
 500                     *destalpha = *sourcemask ;
 501                 }
 502             }
 503         }
 504         else if ( m_hasAlpha )
 505         {
 506 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 507             alphaInfo = kCGImageAlphaPremultipliedFirst ;
 508 #else
 509             alphaInfo = kCGImageAlphaFirst ;
 510 #endif
 511             membuf = new wxMemoryBuffer( m_memBuf ) ;
 512         }
 513         else
 514         {
 515             membuf = new wxMemoryBuffer( m_memBuf ) ;
 516         }
 517         CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 518         CGDataProviderRef dataProvider =
 519             CGDataProviderCreateWithData( membuf , (const void *)membuf->GetData() , imageSize,
 520                 wxMacMemoryBufferReleaseProc );
 521         image =
 522             ::CGImageCreate( w, h, 8 , 32 , 4 * m_width , colorSpace, alphaInfo ,
 523                         dataProvider, NULL , false , kCGRenderingIntentDefault );
 524         CGDataProviderRelease( dataProvider);
 525     }
 526     else
 527     {
 528         image = m_cgImageRef ;
 529         CGImageRetain( image ) ;
 530     }
 531     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 532     {
 533         // we keep it for later use
 534         m_cgImageRef = image ;
 535         CGImageRetain( image ) ;
 536     }
 537     return image ;
 538 }
 539 #endif
 540
 541 GWorldPtr wxBitmapRefData::GetHBITMAP(GWorldPtr* mask) const
 542 {
 543     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 544     if ( mask )
 545     {
 546         *mask = NULL ;
 547         if ( m_bitmapMask )
 548             *mask = (GWorldPtr) m_bitmapMask->GetHBITMAP() ;
 549         else if ( m_hasAlpha )
 550         {
 551 #if !wxMAC_USE_CORE_GRAPHICS
 552             if ( m_rawAccessCount > 0 )
 553                 UpdateAlphaMask() ;
 554 #else
 555             // this structure is not kept in synch when using CG, so if someone
 556             // is really accessing the Graphports, we have to sync it
 557             UpdateAlphaMask() ;
 558 #endif
 559             *mask = m_hMaskBitmap ;
 560         }
 561     }
 562     return m_hBitmap ;
 563 }
 564
 565 void wxBitmapRefData::UpdateAlphaMask() const
 566 {
 567     if ( m_hasAlpha )
 568     {
 569         unsigned char *sourcemask = (unsigned char *) GetRawAccess() ;
 570         unsigned char *destalphabase = (unsigned char *) m_maskMemBuf.GetData() ;
 571
 572         int h = GetHeight() ;
 573         int w = GetWidth() ;
 574
 575         for ( int y = 0 ; y < h ; ++y , destalphabase += m_maskBytesPerRow )
 576         {
 577             unsigned char* destalpha = destalphabase ;
 578             for( int x = 0 ; x < w ; ++x , sourcemask += 4 )
 579             {
 580                 // we must have 24 bit depth for non quartz smooth alpha
 581                 *destalpha++ = 255 ;
 582                 *destalpha++ = 255  - *sourcemask ;
 583                 *destalpha++ = 255  - *sourcemask ;
 584                 *destalpha++ = 255  - *sourcemask ;
 585             }
 586         }
 587     }
 588 }
 589
 590 void wxBitmapRefData::Free()
 591 {
 592     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 593
 594 #if wxMAC_USE_CORE_GRAPHICS
 595     if ( m_cgImageRef )
 596     {
 597         CGImageRelease( m_cgImageRef ) ;
 598         m_cgImageRef = NULL ;
 599     }
 600 #endif
 601     if ( m_iconRef )
 602     {
 603         ReleaseIconRef( m_iconRef ) ;
 604         m_iconRef = NULL ;
 605     }
 606     if ( m_pictHandle )
 607     {
 608         KillPicture( m_pictHandle ) ;
 609         m_pictHandle = NULL ;
 610     }
 611     if ( m_hBitmap )
 612     {
 613         DisposeGWorld( MAC_WXHBITMAP(m_hBitmap) ) ;
 614         m_hBitmap = NULL ;
 615     }
 616     if ( m_hMaskBitmap )
 617     {
 618         DisposeGWorld( MAC_WXHBITMAP(m_hMaskBitmap) ) ;
 619         m_hMaskBitmap = NULL ;
 620     }
 621
 622     if (m_bitmapMask)
 623     {
 624         delete m_bitmapMask;
 625         m_bitmapMask = NULL;
 626     }
 627 }
 628
 629 wxBitmapRefData::~wxBitmapRefData()
 630 {
 631     Free() ;
 632 }
 633
 634 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 635 {
 636     int w = icon.GetWidth() ;
 637     int h = icon.GetHeight() ;
 638
 639
 640     Create( icon.GetWidth() , icon.GetHeight() ) ;
 641
 642     bool created = false ;
 643
 644     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 645     {
 646         IconFamilyHandle iconFamily = NULL ;
 647         Handle imagehandle = NewHandle(0) ;
 648         Handle maskhandle = NewHandle(0) ;
 649
 650         OSType maskType = 0;
 651         OSType dataType = 0;
 652         IconSelectorValue selector = 0 ;
 653         if ( w == 128 )
 654         {
 655             dataType = kThumbnail32BitData ;
 656             maskType = kThumbnail8BitMask ;
 657             selector = kSelectorAllAvailableData ;
 658         }
 659         else if ( w == 48 )
 660         {
 661             dataType = kHuge32BitData ;
 662             maskType = kHuge8BitMask ;
 663             selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 664         }
 665         else if ( w == 32 )
 666         {
 667             dataType = kLarge32BitData ;
 668             maskType = kLarge8BitMask ;
 669             selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 670         }
 671         else if ( w == 16 )
 672         {
 673             dataType = kSmall32BitData ;
 674             maskType = kSmall8BitMask ;
 675             selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 676         }
 677
 678
 679         OSStatus err = ( IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ) ;
 680
 681         err =( GetIconFamilyData( iconFamily , dataType , imagehandle ) ) ;
 682         err =( GetIconFamilyData( iconFamily , maskType , maskhandle ) ) ;
 683         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 684         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 685
 686         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 687         {
 688             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 689             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 690             UseAlpha() ;
 691             unsigned char *source = (unsigned char *) *imagehandle ;
 692             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 693
 694             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 695             for ( int y = 0 ; y < h ; ++y )
 696             {
 697                 for ( int x = 0 ; x < w ; ++x )
 698                 {
 699                     *destination++ = *sourcemask++ ;
 700                     source++ ;
 701                     *destination++ = *source++ ;
 702                     *destination++ = *source++ ;
 703                     *destination++ = *source++ ;
 704                 }
 705             }
 706             EndRawAccess() ;
 707             DisposeHandle( imagehandle ) ;
 708             DisposeHandle( maskhandle ) ;
 709             created = true ;
 710         }
 711         DisposeHandle( (Handle) iconFamily ) ;
 712
 713     }
 714
 715     if ( !created )
 716     {
 717         wxMemoryDC dc ;
 718         dc.SelectObject( *this ) ;
 719         dc.DrawIcon( icon , 0 , 0 ) ;
 720         dc.SelectObject( wxNullBitmap ) ;
 721     }
 722     return true;
 723 }
 724
 725 wxBitmap::wxBitmap()
 726 {
 727 }
 728
 729 wxBitmap::~wxBitmap()
 730 {
 731 }
 732
 733 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 734 {
 735     m_refData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 736
 737     if ( no_bits == 1 )
 738     {
 739         int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 740         if ( the_width % (sizeof(unsigned char) * 8) ) {
 741             linesize += sizeof(unsigned char);
 742         }
 743         unsigned char* linestart = (unsigned char*) bits ;
 744         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 745         for ( int y = 0 ; y < the_height ; ++y , linestart += linesize )
 746         {
 747             for ( int x = 0 ; x < the_width ; ++x )
 748             {
 749                 int index = x / 8 ;
 750                 int bit = x % 8 ;
 751                 int mask = 1 << bit ;
 752                 if ( linestart[index] & mask )
 753                 {
 754                     *destination++ = 0xFF ;
 755                     *destination++ = 0 ;
 756                     *destination++ = 0 ;
 757                     *destination++ = 0 ;
 758                 }
 759                 else
 760                 {
 761                     *destination++ = 0xFF ;
 762                     *destination++ = 0xFF ;
 763                     *destination++ = 0xFF ;
 764                     *destination++ = 0xFF ;
 765                 }
 766             }
 767         }
 768         EndRawAccess() ;
 769     }
 770     else
 771     {
 772         wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 773     }
 774 }
 775
 776 wxBitmap::wxBitmap(int w, int h, int d)
 777 {
 778     (void)Create(w, h, d);
 779 }
 780
 781 wxBitmap::wxBitmap(void *data, wxBitmapType type, int width, int height, int depth)
 782 {
 783     (void) Create(data, type, width, height, depth);
 784 }
 785
 786 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 787 {
 788     LoadFile(filename, type);
 789 }
 790
 791 wxBitmap::wxBitmap(const char **bits)
 792 {
 793     (void) CreateFromXpm(bits);
 794 }
 795
 796 wxBitmap::wxBitmap(char **bits)
 797 {
 798     (void) CreateFromXpm((const char **)bits);
 799 }
 800
 801 void* wxBitmap::GetRawAccess() const
 802 {
 803     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 804     return M_BITMAPDATA->GetRawAccess() ;
 805 }
 806
 807 void* wxBitmap::BeginRawAccess()
 808 {
 809     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 810     return M_BITMAPDATA->BeginRawAccess() ;
 811 }
 812
 813 void wxBitmap::EndRawAccess()
 814 {
 815     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 816     M_BITMAPDATA->EndRawAccess() ;
 817 }
 818
 819 bool wxBitmap::CreateFromXpm(const char **bits)
 820 {
 821 #if wxUSE_IMAGE
 822     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
 823     wxXPMDecoder decoder;
 824     wxImage img = decoder.ReadData(bits);
 825     wxCHECK_MSG( img.Ok(), FALSE, wxT("invalid bitmap data") )
 826     *this = wxBitmap(img);
 827     return TRUE;
 828 #else
 829     return FALSE;
 830 #endif
 831 }
 832
 833 #ifdef __WXMAC_OSX__
 834 WXCGIMAGEREF wxBitmap::CGImageCreate() const
 835 {
 836     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 837     return M_BITMAPDATA->CGImageCreate() ;
 838 }
 839 #endif
 840
 841 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
 842 {
 843     wxCHECK_MSG( Ok() &&
 844                 (rect.x >= 0) && (rect.y >= 0) &&
 845                 (rect.x+rect.width <= GetWidth()) &&
 846                 (rect.y+rect.height <= GetHeight()),
 847                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 848
 849
 850     wxBitmap ret( rect.width, rect.height, GetDepth() );
 851     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 852
 853
 854     int sourcewidth = GetWidth() ;
 855     int destwidth = rect.width ;
 856     int destheight = rect.height ;
 857     {
 858         unsigned char * sourcedata = (unsigned char*) GetRawAccess() ;
 859         unsigned char * destdata = (unsigned char*) ret.BeginRawAccess() ;
 860         int sourcelinesize = sourcewidth * 4 ;
 861         int destlinesize = destwidth * 4 ;
 862         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
 863         unsigned char *dest = destdata ;
 864         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 865         {
 866             memcpy( dest , source , destlinesize ) ;
 867         }
 868     }
 869     ret.EndRawAccess() ;
 870
 871     if ( M_BITMAPDATA->m_bitmapMask )
 872     {
 873         wxMemoryBuffer maskbuf ;
 874         int rowBytes = ( destwidth + 3 ) & 0xFFFFFFC ;
 875         size_t maskbufsize = rowBytes * destheight ;
 876         unsigned char * destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
 877
 878         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow()  ;
 879         int destlinesize = rowBytes ;
 880         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
 881         source += rect.x + rect.y * sourcelinesize ;
 882         unsigned char *dest = destdata ;
 883
 884         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 885         {
 886             memcpy( dest , source , destlinesize ) ;
 887         }
 888         maskbuf.UngetWriteBuf( maskbufsize ) ;
 889         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
 890     }
 891     else if ( HasAlpha() )
 892         ret.UseAlpha() ;
 893
 894     return ret;
 895 }
 896
 897 bool wxBitmap::Create(int w, int h, int d)
 898 {
 899     UnRef();
 900
 901     if ( d < 0 )
 902         d = wxDisplayDepth() ;
 903
 904     m_refData = new wxBitmapRefData( w , h , d );
 905
 906     return M_BITMAPDATA->Ok() ;
 907 }
 908
 909 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
 910 {
 911     UnRef();
 912
 913     wxBitmapHandler *handler = FindHandler(type);
 914
 915     if ( handler )
 916     {
 917         m_refData = new wxBitmapRefData;
 918
 919         return handler->LoadFile(this, filename, type, -1, -1);
 920     }
 921     else
 922     {
 923 #if wxUSE_IMAGE
 924         wxImage loadimage(filename, type);
 925         if (loadimage.Ok()) {
 926             *this = loadimage;
 927             return true;
 928         }
 929 #endif
 930     }
 931     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 932     return false;
 933 }
 934
 935 bool wxBitmap::Create(void *data, wxBitmapType type, int width, int height, int depth)
 936 {
 937     UnRef();
 938
 939     m_refData = new wxBitmapRefData;
 940
 941     wxBitmapHandler *handler = FindHandler(type);
 942
 943     if ( handler == NULL ) {
 944         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 945
 946         return FALSE;
 947     }
 948
 949     return handler->Create(this, data, type, width, height, depth);
 950 }
 951
 952 #if wxUSE_IMAGE
 953
 954 wxBitmap::wxBitmap(const wxImage& image, int depth)
 955 {
 956     wxCHECK_RET( image.Ok(), wxT("invalid image") )
 957
 958     // width and height of the device-dependent bitmap
 959     int width = image.GetWidth();
 960     int height = image.GetHeight();
 961
 962     m_refData = new wxBitmapRefData( width , height , depth ) ;;
 963
 964     // Create picture
 965
 966     bool hasAlpha = false ;
 967
 968     if ( image.HasMask() )
 969     {
 970         // takes precedence, don't mix with alpha info
 971     }
 972     else
 973     {
 974         hasAlpha = image.HasAlpha() ;
 975     }
 976
 977     if ( hasAlpha )
 978         UseAlpha() ;
 979
 980     unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 981
 982     register unsigned char* data = image.GetData();
 983     const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
 984     for (int y = 0; y < height; y++)
 985     {
 986         for (int x = 0; x < width; x++)
 987         {
 988             if ( hasAlpha )
 989             {
 990                 const unsigned char a = *alpha++;
 991                 *destination++ = a ;
 992 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 993                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 994                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 995                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 996 #else
 997                 *destination++ = *data++ ;
 998                 *destination++ = *data++ ;
 999                 *destination++ = *data++ ;
1000 #endif
1001             }
1002             else
1003             {
1004                 *destination++ = 0xFF ;
1005                 *destination++ = *data++ ;
1006                 *destination++ = *data++ ;
1007                 *destination++ = *data++ ;
1008             }
1009         }
1010     }
1011     EndRawAccess() ;
1012     if ( image.HasMask() )
1013     {
1014         SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
1015     }
1016 }
1017
1018 wxImage wxBitmap::ConvertToImage() const
1019 {
1020     wxImage image;
1021
1022     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
1023
1024     // create an wxImage object
1025     int width = GetWidth();
1026     int height = GetHeight();
1027     image.Create( width, height );
1028
1029     unsigned char *data = image.GetData();
1030     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
1031
1032     unsigned char* source = (unsigned char*) GetRawAccess() ;
1033
1034     bool hasAlpha = false ;
1035     bool hasMask = false ;
1036     int maskBytesPerRow = 0 ;
1037     unsigned char *alpha = NULL ;
1038     unsigned char *mask = NULL ;
1039     if ( HasAlpha() )
1040     {
1041         hasAlpha = true ;
1042     }
1043
1044     if ( GetMask() )
1045     {
1046         hasMask = true ;
1047         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1048         maskBytesPerRow = GetMask()->GetBytesPerRow() ;
1049     }
1050
1051     if ( hasAlpha )
1052     {
1053         image.SetAlpha() ;
1054         alpha = image.GetAlpha() ;
1055     }
1056     int index = 0;
1057
1058     // The following masking algorithm is the same as well in msw/gtk:
1059     // the colour used as transparent one in wxImage and the one it is
1060     // replaced with when it really occurs in the bitmap
1061     static const int MASK_RED = 1;
1062     static const int MASK_GREEN = 2;
1063     static const int MASK_BLUE = 3;
1064     static const int MASK_BLUE_REPLACEMENT = 2;
1065
1066     for (int yy = 0; yy < height; yy++ , mask += maskBytesPerRow )
1067     {
1068         unsigned char * maskp = mask ;
1069         for (int xx = 0; xx < width; xx++)
1070         {
1071             long color = *((long*) source) ;
1072             unsigned char a = ((color&0xFF000000) >> 24) ;
1073             unsigned char r = ((color&0x00FF0000) >> 16) ;
1074             unsigned char g = ((color&0x0000FF00) >> 8) ;
1075             unsigned char b = (color&0x000000FF);
1076             if ( hasMask )
1077             {
1078                 if ( *maskp++ == 0 )
1079                 {
1080                     if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1081                         b = MASK_BLUE_REPLACEMENT ;
1082                     else
1083                     {
1084                         r = MASK_RED ;
1085                         g = MASK_GREEN ;
1086                         b = MASK_BLUE ;
1087                     }
1088                 }
1089             }
1090             else if ( hasAlpha )
1091                 *alpha++ = a ;
1092
1093             data[index    ] = r ;
1094             data[index + 1] = g ;
1095             data[index + 2] = b ;
1096             index += 3;
1097             source += 4 ;
1098         }
1099     }
1100     if ( hasMask )
1101         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1102     return image;
1103 }
1104
1105 #endif //wxUSE_IMAGE
1106
1107 bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type,
1108                         const wxPalette *palette) const
1109 {
1110     wxBitmapHandler *handler = FindHandler(type);
1111
1112     if ( handler )
1113     {
1114         return handler->SaveFile(this, filename, type, palette);
1115     }
1116     else
1117     {
1118 #if wxUSE_IMAGE
1119         wxImage image = ConvertToImage();
1120         return image.SaveFile(filename, type);
1121 #endif
1122     }
1123
1124     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1125     return false;
1126 }
1127
1128 bool wxBitmap::Ok() const
1129 {
1130    return (M_BITMAPDATA && M_BITMAPDATA->Ok());
1131 }
1132
1133 int wxBitmap::GetHeight() const
1134 {
1135    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1136
1137    return M_BITMAPDATA->GetHeight();
1138 }
1139
1140 int wxBitmap::GetWidth() const
1141 {
1142    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1143
1144    return M_BITMAPDATA->GetWidth() ;
1145 }
1146
1147 int wxBitmap::GetDepth() const
1148 {
1149    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1150
1151    return M_BITMAPDATA->GetDepth();
1152 }
1153
1154 #if WXWIN_COMPATIBILITY_2_4
1155
1156 int wxBitmap::GetQuality() const
1157 {
1158     return 0;
1159 }
1160
1161 #endif
1162
1163 wxMask *wxBitmap::GetMask() const
1164 {
1165    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1166
1167    return M_BITMAPDATA->m_bitmapMask;
1168 }
1169
1170 bool wxBitmap::HasAlpha() const
1171 {
1172    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1173
1174    return M_BITMAPDATA->HasAlpha() ;
1175 }
1176
1177 void wxBitmap::SetWidth(int w)
1178 {
1179     if (!M_BITMAPDATA)
1180         m_refData = new wxBitmapRefData;
1181
1182     M_BITMAPDATA->SetWidth(w);
1183 }
1184
1185 void wxBitmap::SetHeight(int h)
1186 {
1187     if (!M_BITMAPDATA)
1188         m_refData = new wxBitmapRefData;
1189
1190     M_BITMAPDATA->SetHeight(h);
1191 }
1192
1193 void wxBitmap::SetDepth(int d)
1194 {
1195     if (!M_BITMAPDATA)
1196         m_refData = new wxBitmapRefData;
1197
1198     M_BITMAPDATA->SetDepth(d);
1199 }
1200
1201 #if WXWIN_COMPATIBILITY_2_4
1202
1203 void wxBitmap::SetQuality(int WXUNUSED(quality))
1204 {
1205 }
1206
1207 #endif
1208
1209 void wxBitmap::SetOk(bool isOk)
1210 {
1211     if (!M_BITMAPDATA)
1212         m_refData = new wxBitmapRefData;
1213
1214     M_BITMAPDATA->SetOk(isOk);
1215 }
1216
1217 #if wxUSE_PALETTE
1218 wxPalette *wxBitmap::GetPalette() const
1219 {
1220    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1221
1222    return &M_BITMAPDATA->m_bitmapPalette;
1223 }
1224
1225 void wxBitmap::SetPalette(const wxPalette& palette)
1226 {
1227     if (!M_BITMAPDATA)
1228         m_refData = new wxBitmapRefData;
1229
1230     M_BITMAPDATA->m_bitmapPalette = palette ;
1231 }
1232 #endif // wxUSE_PALETTE
1233
1234 void wxBitmap::SetMask(wxMask *mask)
1235 {
1236     if (!M_BITMAPDATA)
1237         m_refData = new wxBitmapRefData;
1238
1239     // Remove existing mask if there is one.
1240     delete M_BITMAPDATA->m_bitmapMask;
1241
1242     M_BITMAPDATA->m_bitmapMask = mask ;
1243 }
1244
1245 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1246 {
1247     return WXHBITMAP(M_BITMAPDATA->GetHBITMAP((GWorldPtr*)mask));
1248 }
1249
1250 // ----------------------------------------------------------------------------
1251 // wxMask
1252 // ----------------------------------------------------------------------------
1253
1254 wxMask::wxMask()
1255 {
1256     Init() ;
1257 }
1258
1259 // Construct a mask from a bitmap and a colour indicating
1260 // the transparent area
1261 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
1262 {
1263     Init() ;
1264     Create(bitmap, colour);
1265 }
1266
1267 // Construct a mask from a mono bitmap (copies the bitmap).
1268 wxMask::wxMask(const wxBitmap& bitmap)
1269 {
1270     Init() ;
1271     Create(bitmap);
1272 }
1273
1274 // Construct a mask from a mono bitmap (copies the bitmap).
1275 wxMask::wxMask(const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1276 {
1277     Init() ;
1278     Create(data, width , height , bytesPerRow );
1279 }
1280
1281 wxMask::~wxMask()
1282 {
1283     if ( m_maskBitmap )
1284     {
1285         DisposeGWorld( (GWorldPtr) m_maskBitmap ) ;
1286         m_maskBitmap = NULL ;
1287     }
1288 }
1289
1290 void wxMask::Init()
1291 {
1292     m_width = m_height = m_bytesPerRow = 0 ;
1293     m_maskBitmap = NULL ;
1294 }
1295
1296 void *wxMask::GetRawAccess() const
1297 {
1298     return m_memBuf.GetData() ;
1299 }
1300
1301 // this can be a k8IndexedGrayPixelFormat GWorld, because it never stores other values than black or white
1302 // so no rainbox colors will be created by QD when blitting
1303
1304 void wxMask::RealizeNative()
1305 {
1306     if ( m_maskBitmap )
1307     {
1308        DisposeGWorld(  (GWorldPtr) m_maskBitmap ) ;
1309        m_maskBitmap = NULL ;
1310     }
1311     Rect rect = { 0 , 0 , m_height , m_width } ;
1312     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_maskBitmap , k8IndexedGrayPixelFormat , &rect , NULL , NULL , 0 ,
1313         (char*) m_memBuf.GetData() , m_bytesPerRow ) ) ;
1314 }
1315
1316 // Create a mask from a mono bitmap (copies the bitmap).
1317 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1318 {
1319     m_memBuf = data ;
1320     m_width = width ;
1321     m_height = height ;
1322     m_bytesPerRow = bytesPerRow ;
1323     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1324     RealizeNative() ;
1325     return true ;
1326 }
1327
1328 // Create a mask from a mono bitmap (copies the bitmap).
1329 bool wxMask::Create(const wxBitmap& bitmap)
1330 {
1331     m_width = bitmap.GetWidth() ;
1332     m_height = bitmap.GetHeight() ;
1333     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1334     size_t size = m_bytesPerRow * m_height ;
1335     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1336     memset( destdatabase , 0 , size ) ;
1337     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1338     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1339     {
1340         unsigned char *destdata= destdatabase ;
1341         for( int x = 0 ; x < m_width ; ++x )
1342         {
1343             srcdata++ ;
1344             unsigned char r = *srcdata++ ;
1345             unsigned char g = *srcdata++ ;
1346             unsigned char b = *srcdata++ ;
1347             if ( ( r + g + b ) > 0x10 )
1348                 *destdata++ = 0x00 ;
1349             else
1350                 *destdata++ = 0xFF ;
1351         }
1352     }
1353     m_memBuf.UngetWriteBuf( size ) ;
1354     RealizeNative() ;
1355     return TRUE;
1356 }
1357
1358 // Create a mask from a bitmap and a colour indicating
1359 // the transparent area
1360 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1361 {
1362     m_width = bitmap.GetWidth() ;
1363     m_height = bitmap.GetHeight() ;
1364     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1365     size_t size = m_bytesPerRow * m_height ;
1366
1367     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1368     memset( destdatabase , 0 , size ) ;
1369     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1370     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow)
1371     {
1372         unsigned char *destdata= destdatabase ;
1373         for( int x = 0 ; x < m_width ; ++x )
1374         {
1375             srcdata++ ;
1376             unsigned char r = *srcdata++ ;
1377             unsigned char g = *srcdata++ ;
1378             unsigned char b = *srcdata++ ;
1379             if ( colour == wxColour( r , g , b) )
1380                 *destdata++ = 0x00 ;
1381             else
1382                 *destdata++ = 0xFF ;
1383         }
1384     }
1385     m_memBuf.UngetWriteBuf( size ) ;
1386     RealizeNative() ;
1387     return TRUE;
1388 }
1389
1390 WXHBITMAP wxMask::GetHBITMAP() const
1391 {
1392     return m_maskBitmap ;
1393 }
1394
1395 // ----------------------------------------------------------------------------
1396 // wxBitmapHandler
1397 // ----------------------------------------------------------------------------
1398
1399 wxBitmapHandler::~wxBitmapHandler()
1400 {
1401 }
1402
1403 bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
1404 {
1405     return FALSE;
1406 }
1407
1408 bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1409         int desiredWidth, int desiredHeight)
1410 {
1411     return FALSE;
1412 }
1413
1414 bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
1415 {
1416     return FALSE;
1417 }
1418
1419 // ----------------------------------------------------------------------------
1420 // Standard Handlers
1421 // ----------------------------------------------------------------------------
1422
1423 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1424 {
1425     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1426 public:
1427     inline wxPICTResourceHandler()
1428     {
1429         SetName(wxT("Macintosh Pict resource"));
1430         SetExtension(wxEmptyString);
1431         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1432     };
1433
1434     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1435           int desiredWidth, int desiredHeight);
1436 };
1437 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1438
1439
1440 bool  wxPICTResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1441           int desiredWidth, int desiredHeight)
1442 {
1443 #if wxUSE_METAFILE
1444     Str255 theName ;
1445     wxMacStringToPascal( name , theName ) ;
1446
1447     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1448     if ( thePict )
1449     {
1450         wxMetafile mf ;
1451         mf.SetHMETAFILE((WXHMETAFILE) thePict ) ;
1452         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1453         wxMemoryDC dc ;
1454         dc.SelectObject( *bitmap ) ;
1455         mf.Play( &dc ) ;
1456         dc.SelectObject( wxNullBitmap ) ;
1457         return TRUE ;
1458     }
1459 #endif //wxUSE_METAFILE
1460     return FALSE ;
1461 }
1462
1463
1464 void wxBitmap::InitStandardHandlers()
1465 {
1466     AddHandler(new wxPICTResourceHandler) ;
1467     AddHandler(new wxICONResourceHandler) ;
1468 }
1469
1470 // ----------------------------------------------------------------------------
1471 // raw bitmap access support
1472 // ----------------------------------------------------------------------------
1473
1474 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1475 {
1476     if ( !Ok() )
1477     {
1478         // no bitmap, no data (raw or otherwise)
1479         return NULL;
1480     }
1481
1482     data.m_width = GetWidth() ;
1483     data.m_height = GetHeight() ;
1484     data.m_stride = GetWidth() * 4 ;
1485     return GetRawAccess() ;
1486 }
1487
1488 void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
1489 {
1490     if ( !Ok() )
1491         return;
1492
1493     // TODO : if we have some information about the API we should check
1494     // this code looks strange...
1495
1496     if ( M_BITMAPDATA->HasAlpha() )
1497     {
1498         wxAlphaPixelData& data = (wxAlphaPixelData&)dataBase;
1499
1500         int w = data.GetWidth(),
1501             h = data.GetHeight();
1502
1503         wxBitmap bmpMask(GetWidth(), GetHeight(), 32);
1504         wxAlphaPixelData dataMask(bmpMask, data.GetOrigin(), wxSize(w, h));
1505         wxAlphaPixelData::Iterator pMask(dataMask),
1506                                    p(data);
1507         for ( int y = 0; y < h; y++ )
1508         {
1509             wxAlphaPixelData::Iterator rowStartMask = pMask,
1510                                        rowStart = p;
1511
1512             for ( int x = 0; x < w; x++ )
1513             {
1514                 const wxAlphaPixelData::Iterator::ChannelType
1515                     alpha = p.Alpha();
1516
1517                 pMask.Red() = alpha;
1518                 pMask.Green() = alpha;
1519                 pMask.Blue() = alpha;
1520
1521                 ++p;
1522                 ++pMask;
1523             }
1524
1525             p = rowStart;
1526             p.OffsetY(data, 1);
1527
1528             pMask = rowStartMask;
1529             pMask.OffsetY(dataMask, 1);
1530         }
1531
1532         SetMask(new wxMask(bmpMask));
1533     }
1534 }
1535
1536 void wxBitmap::UseAlpha()
1537 {
1538     // remember that we are using alpha channel, we'll need to create a proper
1539     // mask in UngetRawData()
1540     M_BITMAPDATA->UseAlpha( true );
1541 }