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 // Implementation Notes
  40 // --------------------
  41 //
  42 // we are always working with a 32 bit deep pixel buffer
  43 // under QuickDraw its alpha parts are going to be ignored in the GWorld,
  44 // therefore we have a separate GWorld there for blitting the mask in
  45
  46 // under Quartz then content is transformed into a CGImageRef representing the same data
  47 // which can be transferred to the GPU by the OS for fast rendering
  48
  49 // we don't dare premultiplied alpha yet
  50 #define wxMAC_USE_PREMULTIPLIED_ALPHA 0
  51
  52 IconRef wxMacCreateIconRef(const wxBitmap& bmp)
  53 {
  54     // setup the header properly
  55
  56     IconFamilyHandle iconFamily = (IconFamilyHandle) NewHandle(8) ;
  57     (**iconFamily).resourceType = kIconFamilyType ;
  58     (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
  59
  60     int w = bmp.GetWidth() ;
  61     int h = bmp.GetHeight() ;
  62     int sz = wxMax( w , h ) ;
  63     if ( sz > 128 )
  64     {
  65         wxFAIL_MSG( wxT("Currently only 128 pixels wide images are supported") ) ;
  66     }
  67
  68     Handle data = NULL ;
  69     Handle maskdata = NULL ;
  70     unsigned char * maskptr = NULL ;
  71     unsigned char * ptr = NULL ;
  72     size_t size ;
  73     size_t masksize ;
  74     OSType dataType ;
  75     OSType maskType ;
  76
  77     bool hasAlpha = bmp.HasAlpha() ;
  78     wxMask *mask = bmp.GetMask() ;
  79     // thumbnail is 128 x 128 with 32 bits per pixel
  80
  81     if ( sz > 48 )
  82     {
  83         sz = 128 ;
  84         dataType = kThumbnail32BitData ;
  85         maskType = kThumbnail8BitMask ;
  86     }
  87     else if ( sz > 32 )
  88     {
  89         sz = 48 ;
  90         dataType = kHuge32BitData ;
  91         maskType = kHuge8BitMask ;
  92     }
  93     else if ( sz > 16 )
  94     {
  95         sz = 32 ;
  96         dataType = kLarge32BitData ;
  97         maskType = kLarge8BitMask ;
  98     }
  99     else
 100     {
 101         sz = 16 ;
 102         dataType = kSmall32BitData ;
 103         maskType = kSmall8BitMask ;
 104     }
 105
 106     size = sz * sz * 4 ;
 107     data = NewHandle( size) ;
 108     HLock( data ) ;
 109     ptr = (unsigned char*) *data ;
 110     memset( ptr , 0, size ) ;
 111
 112     masksize = sz * sz ;
 113     maskdata = NewHandle( masksize ) ;
 114     HLock( maskdata ) ;
 115     maskptr = (unsigned char*) *maskdata ;
 116     memset( maskptr , 0 , masksize ) ;
 117
 118     unsigned char * source = (unsigned char*) bmp.GetRawAccess() ;
 119     unsigned char * masksource = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 120     for ( int y = 0 ; y < h ; ++y )
 121     {
 122         unsigned char * dest = ptr + y * sz * 4 ;
 123         unsigned char * maskdest = maskptr + y * sz ;
 124         for ( int x = 0 ; x < w ; ++x )
 125         {
 126             unsigned char a = *source ++ ;
 127             unsigned char r = *source ++ ;
 128             unsigned char g = *source ++ ;
 129             unsigned char b = *source ++ ;
 130
 131             *dest++ = 0 ;
 132             *dest++ = r ;
 133             *dest++ = g ;
 134             *dest++ = b ;
 135
 136             if ( mask )
 137                 *maskdest++ = *masksource++ ;
 138             else if ( hasAlpha )
 139                 *maskdest++ = a ;
 140             else
 141                 *maskdest++ = 0xFF ;
 142         }
 143     }
 144
 145     OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 146     wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 147
 148     err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 149     wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 150     HUnlock( data ) ;
 151     HUnlock( maskdata ) ;
 152     DisposeHandle( data ) ;
 153     DisposeHandle( maskdata ) ;
 154
 155     IconRef iconRef ;
 156     static int iconCounter = 2 ;
 157
 158     err = RegisterIconRefFromIconFamily( 'WXNG' , (OSType) iconCounter, iconFamily, &iconRef ) ;
 159     UInt16 owners ;
 160     err = GetIconRefOwners(iconRef , &owners ) ;
 161
 162     wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 163     // we have to retain a reference, as Unregister will decrement it
 164     AcquireIconRef( iconRef ) ;
 165     UnregisterIconRef( 'WXNG' , (OSType) iconCounter ) ;
 166     DisposeHandle( (Handle) iconFamily ) ;
 167     ++iconCounter ;
 168
 169     return iconRef ;
 170 }
 171
 172 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
 173 {
 174     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
 175     if ( bitmap.Ok() )
 176     {
 177         wxBitmapRefData * bmap = (wxBitmapRefData*) ( bitmap.GetRefData()) ;
 178         if ( bmap == NULL )
 179             return ;
 180         info->contentType = kControlContentIconRef ;
 181         info->u.iconRef = wxMacCreateIconRef( bitmap ) ;
 182
 183 #if wxMAC_USE_CORE_GRAPHICS
 184         /*
 185             // only on 10.4 more controls will accept a CGImage
 186
 187             info->contentType = kControlContentCGImageRef ;
 188             info->u.imageRef = (CGImageRef) bmap->CGImageCreate() ;
 189         */
 190 #endif
 191     }
 192 }
 193
 194 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
 195 {
 196     if ( info->contentType == kControlContentIconRef )
 197     {
 198         ReleaseIconRef(info->u.iconRef) ;
 199     }
 200 #if wxMAC_USE_CORE_GRAPHICS
 201     else if ( info->contentType == kControlContentCGImageRef )
 202     {
 203         CGImageRelease( info->u.imageRef ) ;
 204     }
 205 #endif
 206     else
 207     {
 208         wxFAIL_MSG(wxT("Unexpected bitmap type") ) ;
 209     }
 210 }
 211
 212
 213 void wxBitmapRefData::Init()
 214 {
 215     m_width = 0 ;
 216     m_height = 0 ;
 217     m_depth = 0 ;
 218     m_ok = false ;
 219     m_bitmapMask = NULL ;
 220 #if wxMAC_USE_CORE_GRAPHICS
 221     m_cgImageRef = NULL ;
 222 #else
 223     m_hBitmap = NULL ;
 224     m_hMaskBitmap = NULL;
 225     m_maskBytesPerRow = NULL ;
 226 #endif
 227     m_rawAccessCount = 0 ;
 228     m_hasAlpha = false;
 229 }
 230
 231 wxBitmapRefData::wxBitmapRefData()
 232 {
 233     Init() ;
 234 }
 235
 236 wxBitmapRefData::wxBitmapRefData( int w , int h , int d )
 237 {
 238     Init() ;
 239     Create( w , h , d ) ;
 240 }
 241
 242 bool wxBitmapRefData::Create( int w , int h , int d )
 243 {
 244     m_width = w ;
 245     m_height = h ;
 246     m_depth = d ;
 247
 248     m_bytesPerRow = w * 4 ;
 249     size_t size = m_bytesPerRow * h ;
 250     void*  data = m_memBuf.GetWriteBuf(size) ;
 251     memset( data ,  0 , size) ;
 252     m_memBuf.UngetWriteBuf(size) ;
 253 #if wxMAC_USE_CORE_GRAPHICS
 254     m_ok = true ;
 255 #else
 256     m_hBitmap = NULL ;
 257     Rect rect = { 0 , 0 , m_height , m_width } ;
 258     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 259         (char*) data , m_bytesPerRow ) ) ;
 260     wxASSERT_MSG( m_hBitmap , wxT("Unable to create GWorld context") ) ;
 261     m_ok = ( m_hBitmap != NULL ) ;
 262 #endif
 263     return m_ok ;
 264 }
 265
 266 void wxBitmapRefData::UseAlpha( bool use )
 267 {
 268     if ( m_hasAlpha == use )
 269         return ;
 270
 271     m_hasAlpha = use ;
 272 #if !wxMAC_USE_CORE_GRAPHICS
 273     if ( m_hasAlpha )
 274     {
 275         int width = GetWidth() ;
 276         int height = GetHeight() ;
 277         m_maskBytesPerRow = ( width + 3 ) & 0xFFFFFFC ;
 278         size_t size = height * m_maskBytesPerRow ;
 279         unsigned char * data = (unsigned char * ) m_maskMemBuf.GetWriteBuf( size ) ;
 280         memset( data , 0 , size ) ;
 281         wxASSERT( m_hMaskBitmap == NULL ) ;
 282         Rect rect = { 0 , 0 , height , width } ;
 283         verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hMaskBitmap , k8IndexedGrayPixelFormat , &rect , NULL , NULL , 0 ,
 284             (char*) data , m_maskBytesPerRow ) ) ;
 285         wxASSERT_MSG( m_hMaskBitmap , wxT("Unable to create GWorld context for alpha mask") ) ;
 286         m_maskMemBuf.UngetWriteBuf(size) ;
 287         UpdateAlphaMask() ;
 288     }
 289     else
 290     {
 291         DisposeGWorld( m_hMaskBitmap ) ;
 292         m_hMaskBitmap = NULL ;
 293         m_maskBytesPerRow = 0 ;
 294     }
 295 #endif
 296 }
 297
 298 void *wxBitmapRefData::GetRawAccess() const
 299 {
 300     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 301     return m_memBuf.GetData() ;
 302 }
 303
 304 void *wxBitmapRefData::BeginRawAccess()
 305 {
 306     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") ) ;
 307     wxASSERT( m_rawAccessCount == 0 ) ;
 308     ++m_rawAccessCount ;
 309 #if wxMAC_USE_CORE_GRAPHICS
 310      // we must destroy an existing cached image, as
 311     // the bitmap data may change now
 312     if ( m_cgImageRef )
 313     {
 314         CGImageRelease( m_cgImageRef ) ;
 315         m_cgImageRef = NULL ;
 316     }
 317 #endif
 318     return m_memBuf.GetData() ;
 319 }
 320
 321 void wxBitmapRefData::EndRawAccess()
 322 {
 323     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 324     wxASSERT( m_rawAccessCount == 1 ) ;
 325     --m_rawAccessCount ;
 326 #if !wxMAC_USE_CORE_GRAPHICS
 327     UpdateAlphaMask() ;
 328 #endif
 329 }
 330
 331
 332 #if wxMAC_USE_CORE_GRAPHICS
 333 static void FreeImageMemoryBufferInstance(void *info, const void *data, size_t size)
 334 {
 335     delete ((wxMemoryBuffer*)info) ;
 336 }
 337
 338 CGImageRef wxBitmapRefData::CGImageCreate() const
 339 {
 340     wxASSERT( m_ok ) ;
 341     wxASSERT( m_rawAccessCount >= 0 ) ;
 342     CGImageRef image ;
 343     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 344     {
 345         size_t imageSize = m_width * m_height * 4 ;
 346         void * dataBuffer = m_memBuf.GetData() ;
 347         int w = m_width ;
 348         int h = m_height ;
 349         CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 350         wxMemoryBuffer* membuf = NULL ;
 351
 352         if ( m_bitmapMask )
 353         {
 354             membuf = new wxMemoryBuffer( imageSize ) ;
 355             memcpy( membuf->GetData() , dataBuffer , imageSize ) ;
 356             unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 357             int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 358             unsigned char *destalpha = (unsigned char *) membuf->GetData() ;
 359             alphaInfo = kCGImageAlphaFirst ;
 360             for ( int y = 0 ; y < h ; ++y , sourcemaskstart += maskrowbytes)
 361             {
 362                 unsigned char *sourcemask = sourcemaskstart ;
 363                 for( int x = 0 ; x < w ; ++x , sourcemask++ , destalpha += 4 )
 364                 {
 365                     *destalpha = *sourcemask ;
 366                 }
 367             }
 368         }
 369         else if ( m_hasAlpha )
 370         {
 371 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 372             alphaInfo = kCGImageAlphaPremultipliedFirst ;
 373 #else
 374             alphaInfo = kCGImageAlphaFirst ;
 375 #endif
 376             membuf = new wxMemoryBuffer( m_memBuf ) ;
 377         }
 378         else
 379         {
 380             membuf = new wxMemoryBuffer( m_memBuf ) ;
 381         }
 382         CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 383         CGDataProviderRef dataProvider =
 384             CGDataProviderCreateWithData( membuf , (const void *)membuf->GetData() , imageSize, FreeImageMemoryBufferInstance );
 385         image =
 386             ::CGImageCreate( w, h, 8 , 32 , 4 * m_width , colorSpace, alphaInfo ,
 387                         dataProvider, NULL , false , kCGRenderingIntentDefault );
 388         CGDataProviderRelease( dataProvider);
 389     }
 390     else
 391     {
 392         image = m_cgImageRef ;
 393         CGImageRetain( image ) ;
 394     }
 395     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 396     {
 397         // we keep it for later use
 398         m_cgImageRef = image ;
 399         CGImageRetain( image ) ;
 400     }
 401     return image ;
 402 }
 403 #endif
 404
 405 #if !wxMAC_USE_CORE_GRAPHICS
 406 GWorldPtr wxBitmapRefData::GetHBITMAP(GWorldPtr* mask) const
 407 {
 408     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 409     if ( mask )
 410     {
 411         *mask = NULL ;
 412         if ( m_bitmapMask )
 413             *mask = (GWorldPtr) m_bitmapMask->GetHBITMAP() ;
 414         else if ( m_hasAlpha )
 415         {
 416             if ( m_rawAccessCount > 0 )
 417                 UpdateAlphaMask() ;
 418             *mask = m_hMaskBitmap ;
 419         }
 420     }
 421     return m_hBitmap ;
 422 }
 423
 424 void wxBitmapRefData::UpdateAlphaMask() const
 425 {
 426     if ( m_hasAlpha )
 427     {
 428         unsigned char *sourcemask = (unsigned char *) GetRawAccess() ;
 429         unsigned char *destalphabase = (unsigned char *) m_maskMemBuf.GetData() ;
 430
 431         int h = GetHeight() ;
 432         int w = GetWidth() ;
 433
 434         for ( int y = 0 ; y < h ; ++y , destalphabase += m_maskBytesPerRow )
 435         {
 436             unsigned char* destalpha = destalphabase ;
 437             for( int x = 0 ; x < w ; ++x , sourcemask += 4, ++destalpha )
 438             {
 439                 *destalpha = *sourcemask ;
 440             }
 441         }
 442     }
 443 }
 444
 445 #endif
 446
 447 void wxBitmapRefData::Free()
 448 {
 449     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 450
 451 #if wxMAC_USE_CORE_GRAPHICS
 452     if ( m_cgImageRef )
 453     {
 454         CGImageRelease( m_cgImageRef ) ;
 455         m_cgImageRef = NULL ;
 456     }
 457 #else
 458     if ( m_hBitmap )
 459     {
 460         DisposeGWorld( MAC_WXHBITMAP(m_hBitmap) ) ;
 461         m_hBitmap = NULL ;
 462     }
 463     if ( m_hMaskBitmap )
 464     {
 465         DisposeGWorld( MAC_WXHBITMAP(m_hMaskBitmap) ) ;
 466         m_hMaskBitmap = NULL ;
 467     }
 468 #endif
 469
 470     if (m_bitmapMask)
 471     {
 472         delete m_bitmapMask;
 473         m_bitmapMask = NULL;
 474     }
 475 }
 476
 477 wxBitmapRefData::~wxBitmapRefData()
 478 {
 479     Free() ;
 480 }
 481
 482 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 483 {
 484     int w = icon.GetWidth() ;
 485     int h = icon.GetHeight() ;
 486     Create( icon.GetWidth() , icon.GetHeight() ) ;
 487
 488     if ( w == h && w == 32 )
 489     {
 490         IconFamilyHandle iconFamily = NULL ;
 491         Handle imagehandle = NewHandle(0) ;
 492         Handle maskhandle = NewHandle(0) ;
 493         OSStatus err = ( IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , kSelectorLarge32Bit | kSelectorLarge8BitMask , &iconFamily ) ) ;
 494         err =( GetIconFamilyData( iconFamily , kLarge32BitData , imagehandle ) ) ;
 495         err =( GetIconFamilyData( iconFamily , kLarge8BitMask , maskhandle ) ) ;
 496         wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 497         wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 498         UseAlpha() ;
 499         unsigned char *source = (unsigned char *) *imagehandle ;
 500         unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 501
 502         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 503         for ( int y = 0 ; y < h ; ++y )
 504         {
 505             for ( int x = 0 ; x < w ; ++x )
 506             {
 507                 *destination++ = *sourcemask++ ;
 508                 source++ ;
 509                 *destination++ = *source++ ;
 510                 *destination++ = *source++ ;
 511                 *destination++ = *source++ ;
 512             }
 513         }
 514         EndRawAccess() ;
 515         DisposeHandle( imagehandle ) ;
 516         DisposeHandle( maskhandle ) ;
 517     }
 518     else
 519     {
 520         wxMemoryDC dc ;
 521         dc.SelectObject( *this ) ;
 522         dc.DrawIcon( icon , 0 , 0 ) ;
 523         dc.SelectObject( wxNullBitmap ) ;
 524     }
 525     return true;
 526 }
 527
 528 wxBitmap::wxBitmap()
 529 {
 530 }
 531
 532 wxBitmap::~wxBitmap()
 533 {
 534 }
 535
 536 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 537 {
 538     m_refData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 539
 540     if ( no_bits == 1 )
 541     {
 542         int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 543         if ( the_width % (sizeof(unsigned char) * 8) ) {
 544             linesize += sizeof(unsigned char);
 545         }
 546         unsigned char* linestart = (unsigned char*) bits ;
 547         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 548         for ( int y = 0 ; y < the_height ; ++y , linestart += linesize )
 549         {
 550             for ( int x = 0 ; x < the_width ; ++x )
 551             {
 552                 int index = x / 8 ;
 553                 int bit = x % 8 ;
 554                 int mask = 1 << bit ;
 555                 if ( linestart[index] & mask )
 556                 {
 557                     *destination++ = 0xFF ;
 558                     *destination++ = 0 ;
 559                     *destination++ = 0 ;
 560                     *destination++ = 0 ;
 561                 }
 562                 else
 563                 {
 564                     *destination++ = 0xFF ;
 565                     *destination++ = 0xFF ;
 566                     *destination++ = 0xFF ;
 567                     *destination++ = 0xFF ;
 568                 }
 569             }
 570         }
 571         EndRawAccess() ;
 572     }
 573     else
 574     {
 575         wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 576     }
 577 }
 578
 579 wxBitmap::wxBitmap(int w, int h, int d)
 580 {
 581     (void)Create(w, h, d);
 582 }
 583
 584 wxBitmap::wxBitmap(void *data, wxBitmapType type, int width, int height, int depth)
 585 {
 586     (void) Create(data, type, width, height, depth);
 587 }
 588
 589 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 590 {
 591     LoadFile(filename, type);
 592 }
 593
 594 wxBitmap::wxBitmap(const char **bits)
 595 {
 596     (void) CreateFromXpm(bits);
 597 }
 598
 599 wxBitmap::wxBitmap(char **bits)
 600 {
 601     (void) CreateFromXpm((const char **)bits);
 602 }
 603
 604 void* wxBitmap::GetRawAccess() const
 605 {
 606     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 607     return M_BITMAPDATA->GetRawAccess() ;
 608 }
 609
 610 void* wxBitmap::BeginRawAccess()
 611 {
 612     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 613     return M_BITMAPDATA->BeginRawAccess() ;
 614 }
 615
 616 void wxBitmap::EndRawAccess()
 617 {
 618     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 619     M_BITMAPDATA->EndRawAccess() ;
 620 }
 621
 622 bool wxBitmap::CreateFromXpm(const char **bits)
 623 {
 624     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
 625     wxXPMDecoder decoder;
 626     wxImage img = decoder.ReadData(bits);
 627     wxCHECK_MSG( img.Ok(), FALSE, wxT("invalid bitmap data") )
 628     *this = wxBitmap(img);
 629     return TRUE;
 630 }
 631
 632 #if wxMAC_USE_CORE_GRAPHICS
 633 WXCGIMAGEREF wxBitmap::CGImageCreate() const
 634 {
 635     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 636     return M_BITMAPDATA->CGImageCreate() ;
 637 }
 638 #endif
 639
 640 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
 641 {
 642     wxCHECK_MSG( Ok() &&
 643                 (rect.x >= 0) && (rect.y >= 0) &&
 644                 (rect.x+rect.width <= GetWidth()) &&
 645                 (rect.y+rect.height <= GetHeight()),
 646                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 647
 648
 649     wxBitmap ret( rect.width, rect.height, GetDepth() );
 650     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 651
 652
 653     int sourcewidth = GetWidth() ;
 654     int destwidth = rect.width ;
 655     int destheight = rect.height ;
 656     {
 657         unsigned char * sourcedata = (unsigned char*) GetRawAccess() ;
 658         unsigned char * destdata = (unsigned char*) ret.BeginRawAccess() ;
 659         int sourcelinesize = sourcewidth * 4 ;
 660         int destlinesize = destwidth * 4 ;
 661         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
 662         unsigned char *dest = destdata ;
 663         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 664         {
 665             memcpy( dest , source , destlinesize ) ;
 666         }
 667     }
 668     ret.EndRawAccess() ;
 669
 670     if ( M_BITMAPDATA->m_bitmapMask )
 671     {
 672         wxMemoryBuffer maskbuf ;
 673         int rowBytes = ( destwidth + 3 ) & 0xFFFFFFC ;
 674         size_t maskbufsize = rowBytes * destheight ;
 675         unsigned char * destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
 676
 677         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow()  ;
 678         int destlinesize = rowBytes ;
 679         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
 680         source += rect.x + rect.y * sourcelinesize ;
 681         unsigned char *dest = destdata ;
 682
 683         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 684         {
 685             memcpy( dest , source , destlinesize ) ;
 686         }
 687         maskbuf.UngetWriteBuf( maskbufsize ) ;
 688         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
 689     }
 690     else if ( HasAlpha() )
 691         ret.UseAlpha() ;
 692
 693     return ret;
 694 }
 695
 696 bool wxBitmap::Create(int w, int h, int d)
 697 {
 698     UnRef();
 699
 700     if ( d < 0 )
 701         d = wxDisplayDepth() ;
 702
 703     m_refData = new wxBitmapRefData( w , h , d );
 704
 705     return M_BITMAPDATA->Ok() ;
 706 }
 707
 708 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
 709 {
 710     UnRef();
 711
 712     wxBitmapHandler *handler = FindHandler(type);
 713
 714     if ( handler )
 715     {
 716         m_refData = new wxBitmapRefData;
 717
 718         return handler->LoadFile(this, filename, type, -1, -1);
 719     }
 720     else
 721     {
 722         wxImage loadimage(filename, type);
 723         if (loadimage.Ok()) {
 724             *this = loadimage;
 725             return true;
 726         }
 727     }
 728     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 729     return false;
 730 }
 731
 732 bool wxBitmap::Create(void *data, wxBitmapType type, int width, int height, int depth)
 733 {
 734     UnRef();
 735
 736     m_refData = new wxBitmapRefData;
 737
 738     wxBitmapHandler *handler = FindHandler(type);
 739
 740     if ( handler == NULL ) {
 741         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 742
 743         return FALSE;
 744     }
 745
 746     return handler->Create(this, data, type, width, height, depth);
 747 }
 748
 749 wxBitmap::wxBitmap(const wxImage& image, int depth)
 750 {
 751     wxCHECK_RET( image.Ok(), wxT("invalid image") )
 752
 753     // width and height of the device-dependent bitmap
 754     int width = image.GetWidth();
 755     int height = image.GetHeight();
 756
 757     m_refData = new wxBitmapRefData( width , height , depth ) ;;
 758
 759     // Create picture
 760
 761     bool hasAlpha = false ;
 762
 763     if ( image.HasMask() )
 764     {
 765         // takes precedence, don't mix with alpha info
 766     }
 767     else
 768     {
 769         hasAlpha = image.HasAlpha() ;
 770     }
 771
 772     if ( hasAlpha )
 773         UseAlpha() ;
 774
 775     unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 776
 777     register unsigned char* data = image.GetData();
 778     const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
 779     for (int y = 0; y < height; y++)
 780     {
 781         for (int x = 0; x < width; x++)
 782         {
 783             if ( hasAlpha )
 784             {
 785                 const unsigned char a = *alpha++;
 786                 *destination++ = a ;
 787 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 788                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 789                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 790                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 791 #else
 792                 *destination++ = *data++ ;
 793                 *destination++ = *data++ ;
 794                 *destination++ = *data++ ;
 795 #endif
 796             }
 797             else
 798             {
 799                 *destination++ = 0xFF ;
 800                 *destination++ = *data++ ;
 801                 *destination++ = *data++ ;
 802                 *destination++ = *data++ ;
 803             }
 804         }
 805     }
 806     EndRawAccess() ;
 807     if ( image.HasMask() )
 808     {
 809         SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
 810     }
 811 }
 812
 813 wxImage wxBitmap::ConvertToImage() const
 814 {
 815     wxImage image;
 816
 817     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 818
 819     // create an wxImage object
 820     int width = GetWidth();
 821     int height = GetHeight();
 822     image.Create( width, height );
 823
 824     unsigned char *data = image.GetData();
 825     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
 826
 827     unsigned char* source = (unsigned char*) GetRawAccess() ;
 828
 829     bool hasAlpha = false ;
 830     bool hasMask = false ;
 831     unsigned char *alpha = NULL ;
 832     unsigned char *mask = NULL ;
 833     if ( HasAlpha() )
 834     {
 835         hasAlpha = true ;
 836     }
 837
 838     if ( GetMask() )
 839     {
 840         hasMask = true ;
 841         mask = (unsigned char*) GetMask()->GetRawAccess() ;
 842     }
 843
 844     if ( hasAlpha )
 845     {
 846         image.SetAlpha() ;
 847         alpha = image.GetAlpha() ;
 848     }
 849     int index = 0;
 850
 851     // The following masking algorithm is the same as well in msw/gtk:
 852     // the colour used as transparent one in wxImage and the one it is
 853     // replaced with when it really occurs in the bitmap
 854     static const int MASK_RED = 1;
 855     static const int MASK_GREEN = 2;
 856     static const int MASK_BLUE = 3;
 857     static const int MASK_BLUE_REPLACEMENT = 2;
 858
 859     for (int yy = 0; yy < height; yy++)
 860     {
 861         for (int xx = 0; xx < width; xx++)
 862         {
 863             long color = *((long*) source) ;
 864             unsigned char a = ((color&0xFF000000) >> 24) ;
 865             unsigned char r = ((color&0x00FF0000) >> 16) ;
 866             unsigned char g = ((color&0x0000FF00) >> 8) ;
 867             unsigned char b = (color&0x000000FF);
 868             if ( hasMask )
 869             {
 870                 if ( *mask++ == 0 )
 871                 {
 872                     if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
 873                         b = MASK_BLUE_REPLACEMENT ;
 874                 }
 875                 else
 876                 {
 877                     r = MASK_RED ;
 878                     g = MASK_GREEN ;
 879                     b = MASK_BLUE ;
 880                 }
 881             }
 882             else if ( hasAlpha )
 883                 *alpha++ = a ;
 884
 885             data[index    ] = r ;
 886             data[index + 1] = g ;
 887             data[index + 2] = b ;
 888             index += 3;
 889             source += 4 ;
 890         }
 891     }
 892     if ( hasMask )
 893         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
 894     return image;
 895 }
 896
 897
 898 bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type,
 899                         const wxPalette *palette) const
 900 {
 901     wxBitmapHandler *handler = FindHandler(type);
 902
 903     if ( handler )
 904     {
 905         return handler->SaveFile(this, filename, type, palette);
 906     }
 907     else
 908     {
 909         wxImage image = ConvertToImage();
 910
 911         return image.SaveFile(filename, type);
 912     }
 913
 914     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 915     return false;
 916 }
 917
 918 bool wxBitmap::Ok() const
 919 {
 920    return (M_BITMAPDATA && M_BITMAPDATA->Ok());
 921 }
 922
 923 int wxBitmap::GetHeight() const
 924 {
 925    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 926
 927    return M_BITMAPDATA->GetHeight();
 928 }
 929
 930 int wxBitmap::GetWidth() const
 931 {
 932    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 933
 934    return M_BITMAPDATA->GetWidth() ;
 935 }
 936
 937 int wxBitmap::GetDepth() const
 938 {
 939    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 940
 941    return M_BITMAPDATA->GetDepth();
 942 }
 943
 944 int wxBitmap::GetQuality() const
 945 {
 946     return 0;
 947 }
 948
 949 wxMask *wxBitmap::GetMask() const
 950 {
 951    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
 952
 953    return M_BITMAPDATA->m_bitmapMask;
 954 }
 955
 956 bool wxBitmap::HasAlpha() const
 957 {
 958    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
 959
 960    return M_BITMAPDATA->HasAlpha() ;
 961 }
 962
 963 void wxBitmap::SetWidth(int w)
 964 {
 965     if (!M_BITMAPDATA)
 966         m_refData = new wxBitmapRefData;
 967
 968     M_BITMAPDATA->SetWidth(w);
 969 }
 970
 971 void wxBitmap::SetHeight(int h)
 972 {
 973     if (!M_BITMAPDATA)
 974         m_refData = new wxBitmapRefData;
 975
 976     M_BITMAPDATA->SetHeight(h);
 977 }
 978
 979 void wxBitmap::SetDepth(int d)
 980 {
 981     if (!M_BITMAPDATA)
 982         m_refData = new wxBitmapRefData;
 983
 984     M_BITMAPDATA->SetDepth(d);
 985 }
 986
 987 void wxBitmap::SetQuality(int WXUNUSED(quality))
 988 {
 989 }
 990
 991 void wxBitmap::SetOk(bool isOk)
 992 {
 993     if (!M_BITMAPDATA)
 994         m_refData = new wxBitmapRefData;
 995
 996     M_BITMAPDATA->SetOk(isOk);
 997 }
 998
 999 #if wxUSE_PALETTE
1000 wxPalette *wxBitmap::GetPalette() const
1001 {
1002    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1003
1004    return &M_BITMAPDATA->m_bitmapPalette;
1005 }
1006
1007 void wxBitmap::SetPalette(const wxPalette& palette)
1008 {
1009     if (!M_BITMAPDATA)
1010         m_refData = new wxBitmapRefData;
1011
1012     M_BITMAPDATA->m_bitmapPalette = palette ;
1013 }
1014 #endif // wxUSE_PALETTE
1015
1016 void wxBitmap::SetMask(wxMask *mask)
1017 {
1018     if (!M_BITMAPDATA)
1019         m_refData = new wxBitmapRefData;
1020
1021     // Remove existing mask if there is one.
1022     delete M_BITMAPDATA->m_bitmapMask;
1023
1024     M_BITMAPDATA->m_bitmapMask = mask ;
1025 }
1026
1027 #if !wxMAC_USE_CORE_GRAPHICS
1028 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1029 {
1030     return WXHBITMAP(M_BITMAPDATA->GetHBITMAP((GWorldPtr*)mask));
1031 }
1032 #endif
1033
1034 // ----------------------------------------------------------------------------
1035 // wxMask
1036 // ----------------------------------------------------------------------------
1037
1038 wxMask::wxMask()
1039 {
1040     Init() ;
1041 }
1042
1043 // Construct a mask from a bitmap and a colour indicating
1044 // the transparent area
1045 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
1046 {
1047     Init() ;
1048     Create(bitmap, colour);
1049 }
1050
1051 // Construct a mask from a mono bitmap (copies the bitmap).
1052 wxMask::wxMask(const wxBitmap& bitmap)
1053 {
1054     Init() ;
1055     Create(bitmap);
1056 }
1057
1058 // Construct a mask from a mono bitmap (copies the bitmap).
1059 wxMask::wxMask(const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1060 {
1061     Init() ;
1062     Create(data, width , height , bytesPerRow );
1063 }
1064
1065 wxMask::~wxMask()
1066 {
1067 #if !wxMAC_USE_CORE_GRAPHICS
1068     if ( m_maskBitmap )
1069     {
1070         DisposeGWorld( (GWorldPtr) m_maskBitmap ) ;
1071         m_maskBitmap = NULL ;
1072     }
1073 #endif
1074 }
1075
1076 void wxMask::Init()
1077 {
1078     m_width = m_height = m_bytesPerRow = 0 ;
1079 #if !wxMAC_USE_CORE_GRAPHICS
1080     m_maskBitmap = NULL ;
1081 #endif
1082
1083 }
1084
1085 void *wxMask::GetRawAccess() const
1086 {
1087     return m_memBuf.GetData() ;
1088 }
1089
1090 void wxMask::RealizeNative()
1091 {
1092 #if !wxMAC_USE_CORE_GRAPHICS
1093     if ( m_maskBitmap )
1094     {
1095        DisposeGWorld(  (GWorldPtr) m_maskBitmap ) ;
1096        m_maskBitmap = NULL ;
1097     }
1098     Rect rect = { 0 , 0 , m_height , m_width } ;
1099     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_maskBitmap , k8IndexedGrayPixelFormat , &rect , NULL , NULL , 0 ,
1100         (char*) m_memBuf.GetData() , m_bytesPerRow ) ) ;
1101 #endif
1102 }
1103
1104 // Create a mask from a mono bitmap (copies the bitmap).
1105 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1106 {
1107     m_memBuf = data ;
1108     m_width = width ;
1109     m_height = height ;
1110     m_bytesPerRow = bytesPerRow ;
1111     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1112     RealizeNative() ;
1113     return true ;
1114 }
1115
1116 // Create a mask from a mono bitmap (copies the bitmap).
1117 bool wxMask::Create(const wxBitmap& bitmap)
1118 {
1119     m_width = bitmap.GetWidth() ;
1120     m_height = bitmap.GetHeight() ;
1121     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1122     size_t size = m_bytesPerRow * m_height ;
1123     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1124     memset( destdatabase , 0 , size ) ;
1125     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1126     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1127     {
1128         unsigned char *destdata= destdatabase ;
1129         for( int x = 0 ; x < m_width ; ++x )
1130         {
1131             srcdata++ ;
1132             unsigned char r = *srcdata++ ;
1133             unsigned char g = *srcdata++ ;
1134             unsigned char b = *srcdata++ ;
1135             if ( ( r + g + b ) > 0x10 )
1136                 *destdata++ = 0x00 ;
1137             else
1138                 *destdata++ = 0xFF ;
1139         }
1140     }
1141     m_memBuf.UngetWriteBuf( size ) ;
1142     RealizeNative() ;
1143     return TRUE;
1144 }
1145
1146 // Create a mask from a bitmap and a colour indicating
1147 // the transparent area
1148 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1149 {
1150     m_width = bitmap.GetWidth() ;
1151     m_height = bitmap.GetHeight() ;
1152     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1153     size_t size = m_bytesPerRow * m_height ;
1154
1155     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1156     memset( destdatabase , 0 , size ) ;
1157     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1158     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow)
1159     {
1160         unsigned char *destdata= destdatabase ;
1161         for( int x = 0 ; x < m_width ; ++x )
1162         {
1163             srcdata++ ;
1164             unsigned char r = *srcdata++ ;
1165             unsigned char g = *srcdata++ ;
1166             unsigned char b = *srcdata++ ;
1167             if ( colour == wxColour( r , g , b) )
1168                 *destdata++ = 0x00 ;
1169             else
1170                 *destdata++ = 0xFF ;
1171         }
1172     }
1173     m_memBuf.UngetWriteBuf( size ) ;
1174     RealizeNative() ;
1175     return TRUE;
1176 }
1177
1178 #if !wxMAC_USE_CORE_GRAPHICS
1179 WXHBITMAP wxMask::GetHBITMAP() const
1180 {
1181     return m_maskBitmap ;
1182 }
1183 #endif
1184
1185 // ----------------------------------------------------------------------------
1186 // wxBitmapHandler
1187 // ----------------------------------------------------------------------------
1188
1189 wxBitmapHandler::~wxBitmapHandler()
1190 {
1191 }
1192
1193 bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
1194 {
1195     return FALSE;
1196 }
1197
1198 bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1199         int desiredWidth, int desiredHeight)
1200 {
1201     return FALSE;
1202 }
1203
1204 bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
1205 {
1206     return FALSE;
1207 }
1208
1209 // ----------------------------------------------------------------------------
1210 // Standard Handlers
1211 // ----------------------------------------------------------------------------
1212
1213 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1214 {
1215     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1216 public:
1217     inline wxPICTResourceHandler()
1218     {
1219         SetName(wxT("Macintosh Pict resource"));
1220         SetExtension(wxEmptyString);
1221         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1222     };
1223
1224     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1225           int desiredWidth, int desiredHeight);
1226 };
1227 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1228
1229 bool  wxPICTResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1230           int desiredWidth, int desiredHeight)
1231 {
1232     Str255 theName ;
1233     wxMacStringToPascal( name , theName ) ;
1234
1235     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1236     if ( thePict )
1237     {
1238         wxMetafile mf ;
1239         mf.SetHMETAFILE((WXHMETAFILE) thePict ) ;
1240         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1241         wxMemoryDC dc ;
1242         dc.SelectObject( *bitmap ) ;
1243         mf.Play( &dc ) ;
1244         dc.SelectObject( wxNullBitmap ) ;
1245         return TRUE ;
1246     }
1247     return FALSE ;
1248 }
1249
1250 void wxBitmap::InitStandardHandlers()
1251 {
1252     AddHandler(new wxPICTResourceHandler) ;
1253     AddHandler(new wxICONResourceHandler) ;
1254 }
1255
1256 // ----------------------------------------------------------------------------
1257 // raw bitmap access support
1258 // ----------------------------------------------------------------------------
1259
1260 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1261 {
1262     if ( !Ok() )
1263     {
1264         // no bitmap, no data (raw or otherwise)
1265         return NULL;
1266     }
1267
1268     data.m_width = GetWidth() ;
1269     data.m_height = GetHeight() ;
1270     data.m_stride = GetWidth() * 4 ;
1271     return GetRawAccess() ;
1272 }
1273
1274 void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
1275 {
1276     if ( !Ok() )
1277         return;
1278
1279     // TODO : if we have some information about the API we should check
1280     // this code looks strange...
1281
1282     if ( M_BITMAPDATA->HasAlpha() )
1283     {
1284         wxAlphaPixelData& data = (wxAlphaPixelData&)dataBase;
1285
1286         int w = data.GetWidth(),
1287             h = data.GetHeight();
1288
1289         wxBitmap bmpMask(GetWidth(), GetHeight(), 32);
1290         wxAlphaPixelData dataMask(bmpMask, data.GetOrigin(), wxSize(w, h));
1291         wxAlphaPixelData::Iterator pMask(dataMask),
1292                                    p(data);
1293         for ( int y = 0; y < h; y++ )
1294         {
1295             wxAlphaPixelData::Iterator rowStartMask = pMask,
1296                                        rowStart = p;
1297
1298             for ( int x = 0; x < w; x++ )
1299             {
1300                 const wxAlphaPixelData::Iterator::ChannelType
1301                     alpha = p.Alpha();
1302
1303                 pMask.Red() = alpha;
1304                 pMask.Green() = alpha;
1305                 pMask.Blue() = alpha;
1306
1307                 ++p;
1308                 ++pMask;
1309             }
1310
1311             p = rowStart;
1312             p.OffsetY(data, 1);
1313
1314             pMask = rowStartMask;
1315             pMask.OffsetY(dataMask, 1);
1316         }
1317
1318         SetMask(new wxMask(bmpMask));
1319     }
1320 }
1321
1322 void wxBitmap::UseAlpha()
1323 {
1324     // remember that we are using alpha channel, we'll need to create a proper
1325     // mask in UngetRawData()
1326     M_BITMAPDATA->UseAlpha( true );
1327 }