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 = 0 ;
 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 #ifdef WORDS_BIGENDIAN
 275         iconFamily = (IconFamilyHandle) NewHandle(8) ;
 276         (**iconFamily).resourceType = kIconFamilyType ;
 277         (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
 278 #else
 279         // test this solution on big endian as well
 280         iconFamily = (IconFamilyHandle) NewHandle(0) ;
 281 #endif
 282
 283         int w = GetWidth() ;
 284         int h = GetHeight() ;
 285         int sz = wxMax( w , h ) ;
 286
 287         OSType dataType = 0 ;
 288         OSType maskType = 0 ;
 289
 290         if ( sz == 128 )
 291         {
 292             dataType = kThumbnail32BitData ;
 293             maskType = kThumbnail8BitMask ;
 294         }
 295         else if ( sz == 48 )
 296         {
 297             dataType = kHuge32BitData ;
 298             maskType = kHuge8BitMask ;
 299         }
 300         else if ( sz == 32 )
 301         {
 302             dataType = kLarge32BitData ;
 303             maskType = kLarge8BitMask ;
 304         }
 305         else if ( sz == 16 )
 306         {
 307             dataType = kSmall32BitData ;
 308             maskType = kSmall8BitMask ;
 309         }
 310
 311         if ( dataType != 0 )
 312         {
 313             // setup the header properly
 314
 315             Handle data = NULL ;
 316             Handle maskdata = NULL ;
 317             unsigned char * maskptr = NULL ;
 318             unsigned char * ptr = NULL ;
 319             size_t size ;
 320             size_t masksize ;
 321
 322             size = sz * sz * 4 ;
 323             data = NewHandle( size) ;
 324             HLock( data ) ;
 325             ptr = (unsigned char*) *data ;
 326             memset( ptr , 0, size ) ;
 327
 328             masksize = sz * sz ;
 329             maskdata = NewHandle( masksize ) ;
 330             HLock( maskdata ) ;
 331             maskptr = (unsigned char*) *maskdata ;
 332             memset( maskptr , 0 , masksize ) ;
 333
 334             bool hasAlpha = HasAlpha() ;
 335             wxMask *mask = m_bitmapMask ;
 336             unsigned char * source = (unsigned char*) GetRawAccess() ;
 337             unsigned char * masksource = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 338             for ( int y = 0 ; y < h ; ++y )
 339             {
 340                 unsigned char * dest = ptr + y * sz * 4 ;
 341                 unsigned char * maskdest = maskptr + y * sz ;
 342                 for ( int x = 0 ; x < w ; ++x )
 343                 {
 344                     unsigned char a = *source ++ ;
 345                     unsigned char r = *source ++ ;
 346                     unsigned char g = *source ++ ;
 347                     unsigned char b = *source ++ ;
 348
 349                     *dest++ = 0 ;
 350                     *dest++ = r ;
 351                     *dest++ = g ;
 352                     *dest++ = b ;
 353
 354                     if ( mask )
 355                         *maskdest++ = *masksource++ ;
 356                     else if ( hasAlpha )
 357                         *maskdest++ = a ;
 358                     else
 359                         *maskdest++ = 0xFF ;
 360                 }
 361             }
 362
 363             OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 364             wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 365
 366             err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 367             wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 368             HUnlock( data ) ;
 369             HUnlock( maskdata ) ;
 370             DisposeHandle( data ) ;
 371             DisposeHandle( maskdata ) ;
 372         }
 373         else
 374         {
 375             PicHandle pic = GetPictHandle() ;
 376             SetIconFamilyData( iconFamily, 'PICT' , (Handle) pic ) ;
 377         }
 378
 379         // transform into IconRef
 380
 381         static int iconCounter = 2 ;
 382 #ifdef __WXDEBUG__
 383         OSStatus err =
 384 #endif
 385             RegisterIconRefFromIconFamily( 'WXNG' , (OSType) iconCounter, iconFamily, &m_iconRef ) ;
 386         wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 387         // we have to retain a reference, as Unregister will decrement it
 388         AcquireIconRef( m_iconRef ) ;
 389         UnregisterIconRef( 'WXNG' , (OSType) iconCounter ) ;
 390         DisposeHandle( (Handle) iconFamily ) ;
 391         ++iconCounter ;
 392     }
 393     return m_iconRef ;
 394 }
 395
 396 PicHandle wxBitmapRefData::GetPictHandle()
 397 {
 398     if ( m_pictHandle == NULL )
 399     {
 400         CGrafPtr        origPort = NULL ;
 401         GDHandle        origDev = NULL ;
 402         GWorldPtr       wp = NULL ;
 403         GWorldPtr       mask = NULL ;
 404         int height = GetHeight() ;
 405         int width = GetWidth() ;
 406
 407         Rect rect = { 0 , 0 , height , width } ;
 408
 409         GetGWorld( &origPort , &origDev ) ;
 410
 411         wp = GetHBITMAP( &mask ) ;
 412
 413         RgnHandle clipRgn = NULL ;
 414
 415         if ( mask )
 416         {
 417             GWorldPtr monoworld ;
 418             clipRgn = NewRgn() ;
 419             OSStatus err = NewGWorld( &monoworld , 1 , &rect , NULL , NULL , 0 ) ;
 420             verify_noerr(err) ;
 421             LockPixels( GetGWorldPixMap( monoworld ) ) ;
 422             LockPixels( GetGWorldPixMap( mask ) ) ;
 423             SetGWorld( monoworld , NULL ) ;
 424             RGBColor       white = { 0xffff ,0xffff , 0xffff } ;
 425             RGBColor       black = { 0x0000 ,0x0000 , 0x0000 } ;
 426             RGBForeColor( &black ) ;
 427             RGBBackColor( &white ) ;
 428             CopyBits(GetPortBitMapForCopyBits(mask),
 429                     GetPortBitMapForCopyBits(monoworld),
 430                     &rect,
 431                     &rect,
 432                     srcCopy,NULL);
 433             BitMapToRegion( clipRgn , (BitMap*) *GetGWorldPixMap( monoworld ) ) ;
 434             UnlockPixels( GetGWorldPixMap( monoworld ) ) ;
 435             UnlockPixels( GetGWorldPixMap( mask ) ) ;
 436             DisposeGWorld( monoworld ) ;
 437         }
 438
 439         SetGWorld( wp , NULL ) ;
 440         Rect portRect ;
 441         GetPortBounds( wp , &portRect ) ;
 442         m_pictHandle = OpenPicture(&portRect);
 443
 444         if(m_pictHandle)
 445         {
 446             RGBColor       white = { 0xffff ,0xffff , 0xffff } ;
 447             RGBColor       black = { 0x0000 ,0x0000 , 0x0000 } ;
 448             RGBForeColor( &black ) ;
 449             RGBBackColor( &white ) ;
 450
 451             if ( clipRgn )
 452                 SetClip( clipRgn ) ;
 453
 454             LockPixels( GetGWorldPixMap( wp ) ) ;
 455             CopyBits(GetPortBitMapForCopyBits(wp),
 456                     GetPortBitMapForCopyBits(wp),
 457                     &portRect,
 458                     &portRect,
 459                     srcCopy,clipRgn);
 460             UnlockPixels( GetGWorldPixMap( wp ) ) ;
 461             ClosePicture();
 462         }
 463         SetGWorld( origPort , origDev ) ;
 464         if ( clipRgn )
 465             DisposeRgn( clipRgn ) ;
 466     }
 467     return m_pictHandle ;
 468 }
 469
 470 #ifdef __WXMAC_OSX__
 471 void wxMacMemoryBufferReleaseProc(void *info, const void *data, size_t size)
 472 {
 473     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
 474     wxASSERT( data == membuf->GetData() ) ;
 475     delete membuf ;
 476 }
 477
 478 CGImageRef wxBitmapRefData::CGImageCreate() const
 479 {
 480     wxASSERT( m_ok ) ;
 481     wxASSERT( m_rawAccessCount >= 0 ) ;
 482     CGImageRef image ;
 483     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 484     {
 485         size_t imageSize = m_width * m_height * 4 ;
 486         void * dataBuffer = m_memBuf.GetData() ;
 487         int w = m_width ;
 488         int h = m_height ;
 489         CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 490         wxMemoryBuffer* membuf = NULL ;
 491
 492         if ( m_bitmapMask )
 493         {
 494             membuf = new wxMemoryBuffer( imageSize ) ;
 495             memcpy( membuf->GetData() , dataBuffer , imageSize ) ;
 496             unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 497             int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 498             unsigned char *destalpha = (unsigned char *) membuf->GetData() ;
 499             alphaInfo = kCGImageAlphaFirst ;
 500             for ( int y = 0 ; y < h ; ++y , sourcemaskstart += maskrowbytes)
 501             {
 502                 unsigned char *sourcemask = sourcemaskstart ;
 503                 for( int x = 0 ; x < w ; ++x , sourcemask++ , destalpha += 4 )
 504                 {
 505                     *destalpha = *sourcemask ;
 506                 }
 507             }
 508         }
 509         else if ( m_hasAlpha )
 510         {
 511 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 512             alphaInfo = kCGImageAlphaPremultipliedFirst ;
 513 #else
 514             alphaInfo = kCGImageAlphaFirst ;
 515 #endif
 516             membuf = new wxMemoryBuffer( m_memBuf ) ;
 517         }
 518         else
 519         {
 520             membuf = new wxMemoryBuffer( m_memBuf ) ;
 521         }
 522         CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 523         CGDataProviderRef dataProvider =
 524             CGDataProviderCreateWithData( membuf , (const void *)membuf->GetData() , imageSize,
 525                 wxMacMemoryBufferReleaseProc );
 526         image =
 527             ::CGImageCreate( w, h, 8 , 32 , 4 * m_width , colorSpace, alphaInfo ,
 528                 dataProvider, NULL , false , kCGRenderingIntentDefault );
 529         CGDataProviderRelease( dataProvider);
 530     }
 531     else
 532     {
 533         image = m_cgImageRef ;
 534         CGImageRetain( image ) ;
 535     }
 536     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 537     {
 538         // we keep it for later use
 539         m_cgImageRef = image ;
 540         CGImageRetain( image ) ;
 541     }
 542     return image ;
 543 }
 544 #endif
 545
 546 GWorldPtr wxBitmapRefData::GetHBITMAP(GWorldPtr* mask) const
 547 {
 548     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 549     if ( mask )
 550     {
 551         *mask = NULL ;
 552         if ( m_bitmapMask )
 553             *mask = (GWorldPtr) m_bitmapMask->GetHBITMAP() ;
 554         else if ( m_hasAlpha )
 555         {
 556 #if !wxMAC_USE_CORE_GRAPHICS
 557             if ( m_rawAccessCount > 0 )
 558                 UpdateAlphaMask() ;
 559 #else
 560             // this structure is not kept in synch when using CG, so if someone
 561             // is really accessing the Graphports, we have to sync it
 562             UpdateAlphaMask() ;
 563 #endif
 564             *mask = m_hMaskBitmap ;
 565         }
 566     }
 567     return m_hBitmap ;
 568 }
 569
 570 void wxBitmapRefData::UpdateAlphaMask() const
 571 {
 572     if ( m_hasAlpha )
 573     {
 574         unsigned char *sourcemask = (unsigned char *) GetRawAccess() ;
 575         unsigned char *destalphabase = (unsigned char *) m_maskMemBuf.GetData() ;
 576
 577         int h = GetHeight() ;
 578         int w = GetWidth() ;
 579
 580         for ( int y = 0 ; y < h ; ++y , destalphabase += m_maskBytesPerRow )
 581         {
 582             unsigned char* destalpha = destalphabase ;
 583             for( int x = 0 ; x < w ; ++x , sourcemask += 4 )
 584             {
 585                 // we must have 24 bit depth for non quartz smooth alpha
 586                 *destalpha++ = 255 ;
 587                 *destalpha++ = 255  - *sourcemask ;
 588                 *destalpha++ = 255  - *sourcemask ;
 589                 *destalpha++ = 255  - *sourcemask ;
 590             }
 591         }
 592     }
 593 }
 594
 595 void wxBitmapRefData::Free()
 596 {
 597     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 598
 599 #if wxMAC_USE_CORE_GRAPHICS
 600     if ( m_cgImageRef )
 601     {
 602         CGImageRelease( m_cgImageRef ) ;
 603         m_cgImageRef = NULL ;
 604     }
 605 #endif
 606     if ( m_iconRef )
 607     {
 608         ReleaseIconRef( m_iconRef ) ;
 609         m_iconRef = NULL ;
 610     }
 611     if ( m_pictHandle )
 612     {
 613         KillPicture( m_pictHandle ) ;
 614         m_pictHandle = NULL ;
 615     }
 616     if ( m_hBitmap )
 617     {
 618         DisposeGWorld( MAC_WXHBITMAP(m_hBitmap) ) ;
 619         m_hBitmap = NULL ;
 620     }
 621     if ( m_hMaskBitmap )
 622     {
 623         DisposeGWorld( MAC_WXHBITMAP(m_hMaskBitmap) ) ;
 624         m_hMaskBitmap = NULL ;
 625     }
 626
 627     if (m_bitmapMask)
 628     {
 629         delete m_bitmapMask;
 630         m_bitmapMask = NULL;
 631     }
 632 }
 633
 634 wxBitmapRefData::~wxBitmapRefData()
 635 {
 636     Free() ;
 637 }
 638
 639 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 640 {
 641     int w = icon.GetWidth() ;
 642     int h = icon.GetHeight() ;
 643
 644
 645     Create( icon.GetWidth() , icon.GetHeight() ) ;
 646
 647     bool created = false ;
 648
 649     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 650     {
 651         IconFamilyHandle iconFamily = NULL ;
 652         Handle imagehandle = NewHandle(0) ;
 653         Handle maskhandle = NewHandle(0) ;
 654
 655         OSType maskType = 0;
 656         OSType dataType = 0;
 657         IconSelectorValue selector = 0 ;
 658         if ( w == 128 )
 659         {
 660             dataType = kThumbnail32BitData ;
 661             maskType = kThumbnail8BitMask ;
 662             selector = kSelectorAllAvailableData ;
 663         }
 664         else if ( w == 48 )
 665         {
 666             dataType = kHuge32BitData ;
 667             maskType = kHuge8BitMask ;
 668             selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 669         }
 670         else if ( w == 32 )
 671         {
 672             dataType = kLarge32BitData ;
 673             maskType = kLarge8BitMask ;
 674             selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 675         }
 676         else if ( w == 16 )
 677         {
 678             dataType = kSmall32BitData ;
 679             maskType = kSmall8BitMask ;
 680             selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 681         }
 682
 683
 684         OSStatus err = ( IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ) ;
 685
 686         err =( GetIconFamilyData( iconFamily , dataType , imagehandle ) ) ;
 687         err =( GetIconFamilyData( iconFamily , maskType , maskhandle ) ) ;
 688         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 689         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 690
 691         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 692         {
 693             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 694             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 695             UseAlpha() ;
 696             unsigned char *source = (unsigned char *) *imagehandle ;
 697             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 698
 699             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 700             for ( int y = 0 ; y < h ; ++y )
 701             {
 702                 for ( int x = 0 ; x < w ; ++x )
 703                 {
 704                     *destination++ = *sourcemask++ ;
 705                     source++ ;
 706                     *destination++ = *source++ ;
 707                     *destination++ = *source++ ;
 708                     *destination++ = *source++ ;
 709                 }
 710             }
 711             EndRawAccess() ;
 712             DisposeHandle( imagehandle ) ;
 713             DisposeHandle( maskhandle ) ;
 714             created = true ;
 715         }
 716         DisposeHandle( (Handle) iconFamily ) ;
 717
 718     }
 719
 720     if ( !created )
 721     {
 722         wxMemoryDC dc ;
 723         dc.SelectObject( *this ) ;
 724         dc.DrawIcon( icon , 0 , 0 ) ;
 725         dc.SelectObject( wxNullBitmap ) ;
 726     }
 727     return true;
 728 }
 729
 730 wxBitmap::wxBitmap()
 731 {
 732 }
 733
 734 wxBitmap::~wxBitmap()
 735 {
 736 }
 737
 738 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 739 {
 740     m_refData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 741
 742     if ( no_bits == 1 )
 743     {
 744         int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 745         if ( the_width % (sizeof(unsigned char) * 8) ) {
 746             linesize += sizeof(unsigned char);
 747         }
 748         unsigned char* linestart = (unsigned char*) bits ;
 749         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 750         for ( int y = 0 ; y < the_height ; ++y , linestart += linesize )
 751         {
 752             for ( int x = 0 ; x < the_width ; ++x )
 753             {
 754                 int index = x / 8 ;
 755                 int bit = x % 8 ;
 756                 int mask = 1 << bit ;
 757                 if ( linestart[index] & mask )
 758                 {
 759                     *destination++ = 0xFF ;
 760                     *destination++ = 0 ;
 761                     *destination++ = 0 ;
 762                     *destination++ = 0 ;
 763                 }
 764                 else
 765                 {
 766                     *destination++ = 0xFF ;
 767                     *destination++ = 0xFF ;
 768                     *destination++ = 0xFF ;
 769                     *destination++ = 0xFF ;
 770                 }
 771             }
 772         }
 773         EndRawAccess() ;
 774     }
 775     else
 776     {
 777         wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 778     }
 779 }
 780
 781 wxBitmap::wxBitmap(int w, int h, int d)
 782 {
 783     (void)Create(w, h, d);
 784 }
 785
 786 wxBitmap::wxBitmap(void *data, wxBitmapType type, int width, int height, int depth)
 787 {
 788     (void) Create(data, type, width, height, depth);
 789 }
 790
 791 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 792 {
 793     LoadFile(filename, type);
 794 }
 795
 796 wxBitmap::wxBitmap(const char **bits)
 797 {
 798     (void) CreateFromXpm(bits);
 799 }
 800
 801 wxBitmap::wxBitmap(char **bits)
 802 {
 803     (void) CreateFromXpm((const char **)bits);
 804 }
 805
 806 void* wxBitmap::GetRawAccess() const
 807 {
 808     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 809     return M_BITMAPDATA->GetRawAccess() ;
 810 }
 811
 812 void* wxBitmap::BeginRawAccess()
 813 {
 814     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 815     return M_BITMAPDATA->BeginRawAccess() ;
 816 }
 817
 818 void wxBitmap::EndRawAccess()
 819 {
 820     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 821     M_BITMAPDATA->EndRawAccess() ;
 822 }
 823
 824 bool wxBitmap::CreateFromXpm(const char **bits)
 825 {
 826 #if wxUSE_IMAGE
 827     wxCHECK_MSG( bits != NULL, false, wxT("invalid bitmap data") )
 828     wxXPMDecoder decoder;
 829     wxImage img = decoder.ReadData(bits);
 830     wxCHECK_MSG( img.Ok(), false, wxT("invalid bitmap data") )
 831     *this = wxBitmap(img);
 832     return true;
 833 #else
 834     return false;
 835 #endif
 836 }
 837
 838 #ifdef __WXMAC_OSX__
 839 WXCGIMAGEREF wxBitmap::CGImageCreate() const
 840 {
 841     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 842     return M_BITMAPDATA->CGImageCreate() ;
 843 }
 844 #endif
 845
 846 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
 847 {
 848     wxCHECK_MSG( Ok() &&
 849                 (rect.x >= 0) && (rect.y >= 0) &&
 850                 (rect.x+rect.width <= GetWidth()) &&
 851                 (rect.y+rect.height <= GetHeight()),
 852                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 853
 854
 855     wxBitmap ret( rect.width, rect.height, GetDepth() );
 856     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 857
 858
 859     int sourcewidth = GetWidth() ;
 860     int destwidth = rect.width ;
 861     int destheight = rect.height ;
 862     {
 863         unsigned char * sourcedata = (unsigned char*) GetRawAccess() ;
 864         unsigned char * destdata = (unsigned char*) ret.BeginRawAccess() ;
 865         int sourcelinesize = sourcewidth * 4 ;
 866         int destlinesize = destwidth * 4 ;
 867         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
 868         unsigned char *dest = destdata ;
 869         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 870         {
 871             memcpy( dest , source , destlinesize ) ;
 872         }
 873     }
 874     ret.EndRawAccess() ;
 875
 876     if ( M_BITMAPDATA->m_bitmapMask )
 877     {
 878         wxMemoryBuffer maskbuf ;
 879         int rowBytes = ( destwidth + 3 ) & 0xFFFFFFC ;
 880         size_t maskbufsize = rowBytes * destheight ;
 881         unsigned char * destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
 882
 883         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow()  ;
 884         int destlinesize = rowBytes ;
 885         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
 886         source += rect.x + rect.y * sourcelinesize ;
 887         unsigned char *dest = destdata ;
 888
 889         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 890         {
 891             memcpy( dest , source , destlinesize ) ;
 892         }
 893         maskbuf.UngetWriteBuf( maskbufsize ) ;
 894         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
 895     }
 896     else if ( HasAlpha() )
 897         ret.UseAlpha() ;
 898
 899     return ret;
 900 }
 901
 902 bool wxBitmap::Create(int w, int h, int d)
 903 {
 904     UnRef();
 905
 906     if ( d < 0 )
 907         d = wxDisplayDepth() ;
 908
 909     m_refData = new wxBitmapRefData( w , h , d );
 910
 911     return M_BITMAPDATA->Ok() ;
 912 }
 913
 914 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
 915 {
 916     UnRef();
 917
 918     wxBitmapHandler *handler = FindHandler(type);
 919
 920     if ( handler )
 921     {
 922         m_refData = new wxBitmapRefData;
 923
 924         return handler->LoadFile(this, filename, type, -1, -1);
 925     }
 926     else
 927     {
 928 #if wxUSE_IMAGE
 929         wxImage loadimage(filename, type);
 930         if (loadimage.Ok()) {
 931             *this = loadimage;
 932             return true;
 933         }
 934 #endif
 935     }
 936     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 937     return false;
 938 }
 939
 940 bool wxBitmap::Create(void *data, wxBitmapType type, int width, int height, int depth)
 941 {
 942     UnRef();
 943
 944     m_refData = new wxBitmapRefData;
 945
 946     wxBitmapHandler *handler = FindHandler(type);
 947
 948     if ( handler == NULL ) {
 949         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 950
 951         return false;
 952     }
 953
 954     return handler->Create(this, data, type, width, height, depth);
 955 }
 956
 957 #if wxUSE_IMAGE
 958
 959 wxBitmap::wxBitmap(const wxImage& image, int depth)
 960 {
 961     wxCHECK_RET( image.Ok(), wxT("invalid image") )
 962
 963     // width and height of the device-dependent bitmap
 964     int width = image.GetWidth();
 965     int height = image.GetHeight();
 966
 967     m_refData = new wxBitmapRefData( width , height , depth ) ;
 968
 969     // Create picture
 970
 971     bool hasAlpha = false ;
 972
 973     if ( image.HasMask() )
 974     {
 975         // takes precedence, don't mix with alpha info
 976     }
 977     else
 978     {
 979         hasAlpha = image.HasAlpha() ;
 980     }
 981
 982     if ( hasAlpha )
 983         UseAlpha() ;
 984
 985     unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 986
 987     register unsigned char* data = image.GetData();
 988     const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
 989     for (int y = 0; y < height; y++)
 990     {
 991         for (int x = 0; x < width; x++)
 992         {
 993             if ( hasAlpha )
 994             {
 995                 const unsigned char a = *alpha++;
 996                 *destination++ = a ;
 997 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 998                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 999                 *destination++ = ((*data++) * a + 127 ) / 255 ;
1000                 *destination++ = ((*data++) * a + 127 ) / 255 ;
1001 #else
1002                 *destination++ = *data++ ;
1003                 *destination++ = *data++ ;
1004                 *destination++ = *data++ ;
1005 #endif
1006             }
1007             else
1008             {
1009                 *destination++ = 0xFF ;
1010                 *destination++ = *data++ ;
1011                 *destination++ = *data++ ;
1012                 *destination++ = *data++ ;
1013             }
1014         }
1015     }
1016     EndRawAccess() ;
1017     if ( image.HasMask() )
1018     {
1019         SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
1020     }
1021 }
1022
1023 wxImage wxBitmap::ConvertToImage() const
1024 {
1025     wxImage image;
1026
1027     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
1028
1029     // create an wxImage object
1030     int width = GetWidth();
1031     int height = GetHeight();
1032     image.Create( width, height );
1033
1034     unsigned char *data = image.GetData();
1035     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
1036
1037     unsigned char* source = (unsigned char*) GetRawAccess() ;
1038
1039     bool hasAlpha = false ;
1040     bool hasMask = false ;
1041     int maskBytesPerRow = 0 ;
1042     unsigned char *alpha = NULL ;
1043     unsigned char *mask = NULL ;
1044     if ( HasAlpha() )
1045     {
1046         hasAlpha = true ;
1047     }
1048
1049     if ( GetMask() )
1050     {
1051         hasMask = true ;
1052         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1053         maskBytesPerRow = GetMask()->GetBytesPerRow() ;
1054     }
1055
1056     if ( hasAlpha )
1057     {
1058         image.SetAlpha() ;
1059         alpha = image.GetAlpha() ;
1060     }
1061     int index = 0;
1062
1063     // The following masking algorithm is the same as well in msw/gtk:
1064     // the colour used as transparent one in wxImage and the one it is
1065     // replaced with when it really occurs in the bitmap
1066     static const int MASK_RED = 1;
1067     static const int MASK_GREEN = 2;
1068     static const int MASK_BLUE = 3;
1069     static const int MASK_BLUE_REPLACEMENT = 2;
1070
1071     for (int yy = 0; yy < height; yy++ , mask += maskBytesPerRow )
1072     {
1073         unsigned char * maskp = mask ;
1074         for (int xx = 0; xx < width; xx++)
1075         {
1076             long color = *((long*) source) ;
1077             unsigned char a = ((color&0xFF000000) >> 24) ;
1078             unsigned char r = ((color&0x00FF0000) >> 16) ;
1079             unsigned char g = ((color&0x0000FF00) >> 8) ;
1080             unsigned char b = (color&0x000000FF);
1081             if ( hasMask )
1082             {
1083                 if ( *maskp++ == 0 )
1084                 {
1085                     r = MASK_RED ;
1086                     g = MASK_GREEN ;
1087                     b = MASK_BLUE ;
1088                 }
1089                 else if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1090                     b = MASK_BLUE_REPLACEMENT ;
1091             }
1092             else if ( hasAlpha )
1093                 *alpha++ = a ;
1094
1095             data[index    ] = r ;
1096             data[index + 1] = g ;
1097             data[index + 2] = b ;
1098             index += 3;
1099             source += 4 ;
1100         }
1101     }
1102     if ( hasMask )
1103         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1104     return image;
1105 }
1106
1107 #endif //wxUSE_IMAGE
1108
1109 bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type,
1110                         const wxPalette *palette) const
1111 {
1112     bool success = false;
1113     wxBitmapHandler *handler = FindHandler(type);
1114
1115     if ( handler )
1116     {
1117         success = handler->SaveFile(this, filename, type, palette);
1118     }
1119     else
1120     {
1121 #if wxUSE_IMAGE
1122         wxImage image = ConvertToImage();
1123         success = image.SaveFile(filename, type);
1124 #else
1125         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1126 #endif
1127     }
1128
1129     return success;
1130 }
1131
1132 bool wxBitmap::Ok() const
1133 {
1134    return (M_BITMAPDATA && M_BITMAPDATA->Ok());
1135 }
1136
1137 int wxBitmap::GetHeight() const
1138 {
1139    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1140
1141    return M_BITMAPDATA->GetHeight();
1142 }
1143
1144 int wxBitmap::GetWidth() const
1145 {
1146    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1147
1148    return M_BITMAPDATA->GetWidth() ;
1149 }
1150
1151 int wxBitmap::GetDepth() const
1152 {
1153    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1154
1155    return M_BITMAPDATA->GetDepth();
1156 }
1157
1158 #if WXWIN_COMPATIBILITY_2_4
1159
1160 int wxBitmap::GetQuality() const
1161 {
1162     return 0;
1163 }
1164
1165 #endif
1166
1167 wxMask *wxBitmap::GetMask() const
1168 {
1169    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1170
1171    return M_BITMAPDATA->m_bitmapMask;
1172 }
1173
1174 bool wxBitmap::HasAlpha() const
1175 {
1176    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1177
1178    return M_BITMAPDATA->HasAlpha() ;
1179 }
1180
1181 void wxBitmap::SetWidth(int w)
1182 {
1183     if (!M_BITMAPDATA)
1184         m_refData = new wxBitmapRefData;
1185
1186     M_BITMAPDATA->SetWidth(w);
1187 }
1188
1189 void wxBitmap::SetHeight(int h)
1190 {
1191     if (!M_BITMAPDATA)
1192         m_refData = new wxBitmapRefData;
1193
1194     M_BITMAPDATA->SetHeight(h);
1195 }
1196
1197 void wxBitmap::SetDepth(int d)
1198 {
1199     if (!M_BITMAPDATA)
1200         m_refData = new wxBitmapRefData;
1201
1202     M_BITMAPDATA->SetDepth(d);
1203 }
1204
1205 #if WXWIN_COMPATIBILITY_2_4
1206
1207 void wxBitmap::SetQuality(int WXUNUSED(quality))
1208 {
1209 }
1210
1211 #endif
1212
1213 void wxBitmap::SetOk(bool isOk)
1214 {
1215     if (!M_BITMAPDATA)
1216         m_refData = new wxBitmapRefData;
1217
1218     M_BITMAPDATA->SetOk(isOk);
1219 }
1220
1221 #if wxUSE_PALETTE
1222 wxPalette *wxBitmap::GetPalette() const
1223 {
1224    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1225
1226    return &M_BITMAPDATA->m_bitmapPalette;
1227 }
1228
1229 void wxBitmap::SetPalette(const wxPalette& palette)
1230 {
1231     if (!M_BITMAPDATA)
1232         m_refData = new wxBitmapRefData;
1233
1234     M_BITMAPDATA->m_bitmapPalette = palette ;
1235 }
1236 #endif // wxUSE_PALETTE
1237
1238 void wxBitmap::SetMask(wxMask *mask)
1239 {
1240     if (!M_BITMAPDATA)
1241         m_refData = new wxBitmapRefData;
1242
1243     // Remove existing mask if there is one.
1244     delete M_BITMAPDATA->m_bitmapMask;
1245
1246     M_BITMAPDATA->m_bitmapMask = mask ;
1247 }
1248
1249 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1250 {
1251     return WXHBITMAP(M_BITMAPDATA->GetHBITMAP((GWorldPtr*)mask));
1252 }
1253
1254 // ----------------------------------------------------------------------------
1255 // wxMask
1256 // ----------------------------------------------------------------------------
1257
1258 wxMask::wxMask()
1259 {
1260     Init() ;
1261 }
1262
1263 // Construct a mask from a bitmap and a colour indicating
1264 // the transparent area
1265 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
1266 {
1267     Init() ;
1268     Create(bitmap, colour);
1269 }
1270
1271 // Construct a mask from a mono bitmap (copies the bitmap).
1272 wxMask::wxMask(const wxBitmap& bitmap)
1273 {
1274     Init() ;
1275     Create(bitmap);
1276 }
1277
1278 // Construct a mask from a mono bitmap (copies the bitmap).
1279 wxMask::wxMask(const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1280 {
1281     Init() ;
1282     Create(data, width , height , bytesPerRow );
1283 }
1284
1285 wxMask::~wxMask()
1286 {
1287     if ( m_maskBitmap )
1288     {
1289         DisposeGWorld( (GWorldPtr) m_maskBitmap ) ;
1290         m_maskBitmap = NULL ;
1291     }
1292 }
1293
1294 void wxMask::Init()
1295 {
1296     m_width = m_height = m_bytesPerRow = 0 ;
1297     m_maskBitmap = NULL ;
1298 }
1299
1300 void *wxMask::GetRawAccess() const
1301 {
1302     return m_memBuf.GetData() ;
1303 }
1304
1305 // this can be a k8IndexedGrayPixelFormat GWorld, because it never stores other values than black or white
1306 // so no rainbox colors will be created by QD when blitting
1307
1308 void wxMask::RealizeNative()
1309 {
1310     if ( m_maskBitmap )
1311     {
1312        DisposeGWorld(  (GWorldPtr) m_maskBitmap ) ;
1313        m_maskBitmap = NULL ;
1314     }
1315     Rect rect = { 0 , 0 , m_height , m_width } ;
1316     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_maskBitmap , k8IndexedGrayPixelFormat , &rect , NULL , NULL , 0 ,
1317         (char*) m_memBuf.GetData() , m_bytesPerRow ) ) ;
1318 }
1319
1320 // Create a mask from a mono bitmap (copies the bitmap).
1321 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1322 {
1323     m_memBuf = data ;
1324     m_width = width ;
1325     m_height = height ;
1326     m_bytesPerRow = bytesPerRow ;
1327     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1328     RealizeNative() ;
1329     return true ;
1330 }
1331
1332 // Create a mask from a mono bitmap (copies the bitmap).
1333 bool wxMask::Create(const wxBitmap& bitmap)
1334 {
1335     m_width = bitmap.GetWidth() ;
1336     m_height = bitmap.GetHeight() ;
1337     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1338     size_t size = m_bytesPerRow * m_height ;
1339     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1340     memset( destdatabase , 0 , size ) ;
1341     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1342     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1343     {
1344         unsigned char *destdata= destdatabase ;
1345         for( int x = 0 ; x < m_width ; ++x )
1346         {
1347             srcdata++ ;
1348             unsigned char r = *srcdata++ ;
1349             unsigned char g = *srcdata++ ;
1350             unsigned char b = *srcdata++ ;
1351             if ( ( r + g + b ) > 0x10 )
1352                 *destdata++ = 0x00 ;
1353             else
1354                 *destdata++ = 0xFF ;
1355         }
1356     }
1357     m_memBuf.UngetWriteBuf( size ) ;
1358     RealizeNative() ;
1359     return true;
1360 }
1361
1362 // Create a mask from a bitmap and a colour indicating
1363 // the transparent area
1364 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1365 {
1366     m_width = bitmap.GetWidth() ;
1367     m_height = bitmap.GetHeight() ;
1368     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1369     size_t size = m_bytesPerRow * m_height ;
1370
1371     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1372     memset( destdatabase , 0 , size ) ;
1373     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1374     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow)
1375     {
1376         unsigned char *destdata= destdatabase ;
1377         for( int x = 0 ; x < m_width ; ++x )
1378         {
1379             srcdata++ ;
1380             unsigned char r = *srcdata++ ;
1381             unsigned char g = *srcdata++ ;
1382             unsigned char b = *srcdata++ ;
1383             if ( colour == wxColour( r , g , b) )
1384                 *destdata++ = 0x00 ;
1385             else
1386                 *destdata++ = 0xFF ;
1387         }
1388     }
1389     m_memBuf.UngetWriteBuf( size ) ;
1390     RealizeNative() ;
1391     return true;
1392 }
1393
1394 WXHBITMAP wxMask::GetHBITMAP() const
1395 {
1396     return m_maskBitmap ;
1397 }
1398
1399 // ----------------------------------------------------------------------------
1400 // wxBitmapHandler
1401 // ----------------------------------------------------------------------------
1402
1403 wxBitmapHandler::~wxBitmapHandler()
1404 {
1405 }
1406
1407 bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
1408 {
1409     return false;
1410 }
1411
1412 bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1413         int desiredWidth, int desiredHeight)
1414 {
1415     return false;
1416 }
1417
1418 bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
1419 {
1420     return false;
1421 }
1422
1423 // ----------------------------------------------------------------------------
1424 // Standard Handlers
1425 // ----------------------------------------------------------------------------
1426
1427 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1428 {
1429     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1430 public:
1431     inline wxPICTResourceHandler()
1432     {
1433         SetName(wxT("Macintosh Pict resource"));
1434         SetExtension(wxEmptyString);
1435         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1436     };
1437
1438     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1439           int desiredWidth, int desiredHeight);
1440 };
1441 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1442
1443
1444 bool  wxPICTResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1445           int desiredWidth, int desiredHeight)
1446 {
1447 #if wxUSE_METAFILE
1448     Str255 theName ;
1449     wxMacStringToPascal( name , theName ) ;
1450
1451     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1452     if ( thePict )
1453     {
1454         wxMetafile mf ;
1455         mf.SetHMETAFILE((WXHMETAFILE) thePict ) ;
1456         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1457         wxMemoryDC dc ;
1458         dc.SelectObject( *bitmap ) ;
1459         mf.Play( &dc ) ;
1460         dc.SelectObject( wxNullBitmap ) ;
1461         return true ;
1462     }
1463 #endif //wxUSE_METAFILE
1464     return false ;
1465 }
1466
1467
1468 void wxBitmap::InitStandardHandlers()
1469 {
1470     AddHandler(new wxPICTResourceHandler) ;
1471     AddHandler(new wxICONResourceHandler) ;
1472 }
1473
1474 // ----------------------------------------------------------------------------
1475 // raw bitmap access support
1476 // ----------------------------------------------------------------------------
1477
1478 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1479 {
1480     if ( !Ok() )
1481     {
1482         // no bitmap, no data (raw or otherwise)
1483         return NULL;
1484     }
1485
1486     data.m_width = GetWidth() ;
1487     data.m_height = GetHeight() ;
1488     data.m_stride = GetWidth() * 4 ;
1489     return GetRawAccess() ;
1490 }
1491
1492 void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
1493 {
1494     if ( !Ok() )
1495         return;
1496
1497     // TODO : if we have some information about the API we should check
1498     // this code looks strange...
1499
1500     if ( M_BITMAPDATA->HasAlpha() )
1501     {
1502         wxAlphaPixelData& data = (wxAlphaPixelData&)dataBase;
1503
1504         int w = data.GetWidth(),
1505             h = data.GetHeight();
1506
1507         wxBitmap bmpMask(GetWidth(), GetHeight(), 32);
1508         wxAlphaPixelData dataMask(bmpMask, data.GetOrigin(), wxSize(w, h));
1509         wxAlphaPixelData::Iterator pMask(dataMask),
1510                                    p(data);
1511         for ( int y = 0; y < h; y++ )
1512         {
1513             wxAlphaPixelData::Iterator rowStartMask = pMask,
1514                                        rowStart = p;
1515
1516             for ( int x = 0; x < w; x++ )
1517             {
1518                 const wxAlphaPixelData::Iterator::ChannelType
1519                     alpha = p.Alpha();
1520
1521                 pMask.Red() = alpha;
1522                 pMask.Green() = alpha;
1523                 pMask.Blue() = alpha;
1524
1525                 ++p;
1526                 ++pMask;
1527             }
1528
1529             p = rowStart;
1530             p.OffsetY(data, 1);
1531
1532             pMask = rowStartMask;
1533             pMask.OffsetY(dataMask, 1);
1534         }
1535
1536         SetMask(new wxMask(bmpMask));
1537     }
1538 }
1539
1540 void wxBitmap::UseAlpha()
1541 {
1542     // remember that we are using alpha channel, we'll need to create a proper
1543     // mask in UngetRawData()
1544     M_BITMAPDATA->UseAlpha( true );
1545 }