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 IconFamilyHandle wxMacCreateIconFamily(const wxBitmap& bmp)
  55 {
  56     // setup the header properly
  57
  58     IconFamilyHandle iconFamily = (IconFamilyHandle) NewHandle(8) ;
  59     (**iconFamily).resourceType = kIconFamilyType ;
  60     (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
  61
  62     int w = bmp.GetWidth() ;
  63     int h = bmp.GetHeight() ;
  64     int sz = wxMax( w , h ) ;
  65     if ( sz > 128 )
  66     {
  67         wxFAIL_MSG( wxT("Currently only 128 pixels wide images are supported") ) ;
  68     }
  69
  70     Handle data = NULL ;
  71     Handle maskdata = NULL ;
  72     unsigned char * maskptr = NULL ;
  73     unsigned char * ptr = NULL ;
  74     size_t size ;
  75     size_t masksize ;
  76     OSType dataType ;
  77     OSType maskType ;
  78
  79     bool hasAlpha = bmp.HasAlpha() ;
  80     wxMask *mask = bmp.GetMask() ;
  81     // thumbnail is 128 x 128 with 32 bits per pixel
  82
  83     if ( sz > 48 )
  84     {
  85         sz = 128 ;
  86         dataType = kThumbnail32BitData ;
  87         maskType = kThumbnail8BitMask ;
  88     }
  89     else if ( sz > 32 )
  90     {
  91         sz = 48 ;
  92         dataType = kHuge32BitData ;
  93         maskType = kHuge8BitMask ;
  94     }
  95     else if ( sz > 16 )
  96     {
  97         sz = 32 ;
  98         dataType = kLarge32BitData ;
  99         maskType = kLarge8BitMask ;
 100     }
 101     else
 102     {
 103         sz = 16 ;
 104         dataType = kSmall32BitData ;
 105         maskType = kSmall8BitMask ;
 106     }
 107
 108     size = sz * sz * 4 ;
 109     data = NewHandle( size) ;
 110     HLock( data ) ;
 111     ptr = (unsigned char*) *data ;
 112     memset( ptr , 0, size ) ;
 113
 114     masksize = sz * sz ;
 115     maskdata = NewHandle( masksize ) ;
 116     HLock( maskdata ) ;
 117     maskptr = (unsigned char*) *maskdata ;
 118     memset( maskptr , 0 , masksize ) ;
 119
 120     unsigned char * source = (unsigned char*) bmp.GetRawAccess() ;
 121     unsigned char * masksource = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 122     for ( int y = 0 ; y < h ; ++y )
 123     {
 124         unsigned char * dest = ptr + y * sz * 4 ;
 125         unsigned char * maskdest = maskptr + y * sz ;
 126         for ( int x = 0 ; x < w ; ++x )
 127         {
 128             unsigned char a = *source ++ ;
 129             unsigned char r = *source ++ ;
 130             unsigned char g = *source ++ ;
 131             unsigned char b = *source ++ ;
 132
 133             *dest++ = 0 ;
 134             *dest++ = r ;
 135             *dest++ = g ;
 136             *dest++ = b ;
 137
 138             if ( mask )
 139                 *maskdest++ = *masksource++ ;
 140             else if ( hasAlpha )
 141                 *maskdest++ = a ;
 142             else
 143                 *maskdest++ = 0xFF ;
 144         }
 145     }
 146
 147     OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 148     wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 149
 150     err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 151     wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 152     HUnlock( data ) ;
 153     HUnlock( maskdata ) ;
 154     DisposeHandle( data ) ;
 155     DisposeHandle( maskdata ) ;
 156     return iconFamily ;
 157 }
 158
 159 IconRef wxMacCreateIconRef(const wxBitmap& bmp)
 160 {
 161     IconFamilyHandle iconFamily = wxMacCreateIconFamily( bmp ) ;
 162     IconRef iconRef ;
 163     static int iconCounter = 2 ;
 164
 165     OSStatus err = RegisterIconRefFromIconFamily( 'WXNG' , (OSType) iconCounter, iconFamily, &iconRef ) ;
 166     UInt16 owners ;
 167     err = GetIconRefOwners(iconRef , &owners ) ;
 168
 169     wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 170     // we have to retain a reference, as Unregister will decrement it
 171     AcquireIconRef( iconRef ) ;
 172     UnregisterIconRef( 'WXNG' , (OSType) iconCounter ) ;
 173     DisposeHandle( (Handle) iconFamily ) ;
 174     ++iconCounter ;
 175
 176     return iconRef ;
 177 }
 178
 179 PicHandle wxMacCreatePicHandle( const wxBitmap &bmp )
 180 {
 181     CGrafPtr        origPort = NULL ;
 182     GDHandle        origDev = NULL ;
 183     PicHandle       pict = NULL ;
 184     GWorldPtr       wp = NULL ;
 185     GWorldPtr       mask = NULL ;
 186
 187     GetGWorld( &origPort , &origDev ) ;
 188
 189     wp = (GWorldPtr) bmp.GetHBITMAP( (WXHBITMAP*) &mask ) ;
 190
 191     SetGWorld( wp , NULL ) ;
 192     Rect portRect ;
 193     GetPortBounds( wp , &portRect ) ;
 194     pict = OpenPicture(&portRect);
 195
 196     if(pict)
 197     {
 198         RGBColor       white = { 0xffff ,0xffff , 0xffff } ;
 199         RGBColor       black = { 0x0000 ,0x0000 , 0x0000 } ;
 200         RGBForeColor( &black ) ;
 201         RGBBackColor( &white ) ;
 202
 203         LockPixels( GetGWorldPixMap( wp ) ) ;
 204         CopyBits(GetPortBitMapForCopyBits(wp),
 205                 GetPortBitMapForCopyBits(wp),
 206                 &portRect,
 207                 &portRect,
 208                 srcCopy,NULL);
 209         UnlockPixels( GetGWorldPixMap( wp ) ) ;
 210         ClosePicture();
 211     }
 212     SetGWorld( origPort , origDev ) ;
 213
 214     return pict;
 215 }
 216
 217 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
 218 {
 219     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
 220     if ( bitmap.Ok() )
 221     {
 222         wxBitmapRefData * bmap = (wxBitmapRefData*) ( bitmap.GetRefData()) ;
 223         if ( bmap == NULL )
 224             return ;
 225         info->contentType = kControlContentIconRef ;
 226         info->u.iconRef = wxMacCreateIconRef( bitmap ) ;
 227
 228 #if wxMAC_USE_CORE_GRAPHICS
 229         /*
 230             // only on 10.4 more controls will accept a CGImage
 231
 232             info->contentType = kControlContentCGImageRef ;
 233             info->u.imageRef = (CGImageRef) bmap->CGImageCreate() ;
 234         */
 235 #endif
 236     }
 237 }
 238
 239 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
 240 {
 241     if ( info->contentType == kControlContentIconRef )
 242     {
 243         ReleaseIconRef(info->u.iconRef) ;
 244     }
 245 #if wxMAC_USE_CORE_GRAPHICS && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
 246     else if ( info->contentType == kControlContentCGImageRef )
 247     {
 248         CGImageRelease( info->u.imageRef ) ;
 249     }
 250 #endif
 251     else
 252     {
 253         wxFAIL_MSG(wxT("Unexpected bitmap type") ) ;
 254     }
 255 }
 256
 257 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
 258
 259 void wxBitmapRefData::Init()
 260 {
 261     m_width = 0 ;
 262     m_height = 0 ;
 263     m_depth = 0 ;
 264     m_ok = false ;
 265     m_bitmapMask = NULL ;
 266 #if wxMAC_USE_CORE_GRAPHICS
 267     m_cgImageRef = NULL ;
 268 #endif
 269     m_hBitmap = NULL ;
 270     m_hMaskBitmap = NULL;
 271     m_maskBytesPerRow = NULL ;
 272
 273     m_rawAccessCount = 0 ;
 274     m_hasAlpha = false;
 275 }
 276
 277 wxBitmapRefData::wxBitmapRefData()
 278 {
 279     Init() ;
 280 }
 281
 282 wxBitmapRefData::wxBitmapRefData( int w , int h , int d )
 283 {
 284     Init() ;
 285     Create( w , h , d ) ;
 286 }
 287
 288 bool wxBitmapRefData::Create( int w , int h , int d )
 289 {
 290     m_width = w ;
 291     m_height = h ;
 292     m_depth = d ;
 293
 294     m_bytesPerRow = w * 4 ;
 295     size_t size = m_bytesPerRow * h ;
 296     void*  data = m_memBuf.GetWriteBuf(size) ;
 297     memset( data ,  0 , size) ;
 298     m_memBuf.UngetWriteBuf(size) ;
 299
 300     m_hBitmap = NULL ;
 301     Rect rect = { 0 , 0 , m_height , m_width } ;
 302     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 303         (char*) data , m_bytesPerRow ) ) ;
 304     wxASSERT_MSG( m_hBitmap , wxT("Unable to create GWorld context") ) ;
 305     m_ok = ( m_hBitmap != NULL ) ;
 306
 307     return m_ok ;
 308 }
 309
 310 void wxBitmapRefData::UseAlpha( bool use )
 311 {
 312     if ( m_hasAlpha == use )
 313         return ;
 314
 315     m_hasAlpha = use ;
 316     if ( m_hasAlpha )
 317     {
 318         int width = GetWidth() ;
 319         int height = GetHeight() ;
 320         m_maskBytesPerRow = ( width + 3 ) & 0xFFFFFFC ;
 321         size_t size = height * m_maskBytesPerRow ;
 322         unsigned char * data = (unsigned char * ) m_maskMemBuf.GetWriteBuf( size ) ;
 323         memset( data , 0 , size ) ;
 324         wxASSERT( m_hMaskBitmap == NULL ) ;
 325         Rect rect = { 0 , 0 , height , width } ;
 326         verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hMaskBitmap , k8IndexedGrayPixelFormat , &rect , NULL , NULL , 0 ,
 327             (char*) data , m_maskBytesPerRow ) ) ;
 328         wxASSERT_MSG( m_hMaskBitmap , wxT("Unable to create GWorld context for alpha mask") ) ;
 329         m_maskMemBuf.UngetWriteBuf(size) ;
 330 #if !wxMAC_USE_CORE_GRAPHICS
 331         UpdateAlphaMask() ;
 332 #endif
 333     }
 334     else
 335     {
 336         DisposeGWorld( m_hMaskBitmap ) ;
 337         m_hMaskBitmap = NULL ;
 338         m_maskBytesPerRow = 0 ;
 339     }
 340 }
 341
 342 void *wxBitmapRefData::GetRawAccess() const
 343 {
 344     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 345     return m_memBuf.GetData() ;
 346 }
 347
 348 void *wxBitmapRefData::BeginRawAccess()
 349 {
 350     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") ) ;
 351     wxASSERT( m_rawAccessCount == 0 ) ;
 352     ++m_rawAccessCount ;
 353 #if wxMAC_USE_CORE_GRAPHICS
 354      // we must destroy an existing cached image, as
 355     // the bitmap data may change now
 356     if ( m_cgImageRef )
 357     {
 358         CGImageRelease( m_cgImageRef ) ;
 359         m_cgImageRef = NULL ;
 360     }
 361 #endif
 362     return m_memBuf.GetData() ;
 363 }
 364
 365 void wxBitmapRefData::EndRawAccess()
 366 {
 367     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 368     wxASSERT( m_rawAccessCount == 1 ) ;
 369     --m_rawAccessCount ;
 370 #if !wxMAC_USE_CORE_GRAPHICS
 371     UpdateAlphaMask() ;
 372 #endif
 373 }
 374
 375
 376 #if wxMAC_USE_CORE_GRAPHICS
 377 void wxMacMemoryBufferReleaseProc(void *info, const void *data, size_t size)
 378 {
 379     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
 380     wxASSERT( data == membuf->GetData() ) ;
 381     delete membuf ;
 382 }
 383
 384 CGImageRef wxBitmapRefData::CGImageCreate() const
 385 {
 386     wxASSERT( m_ok ) ;
 387     wxASSERT( m_rawAccessCount >= 0 ) ;
 388     CGImageRef image ;
 389     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 390     {
 391         size_t imageSize = m_width * m_height * 4 ;
 392         void * dataBuffer = m_memBuf.GetData() ;
 393         int w = m_width ;
 394         int h = m_height ;
 395         CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 396         wxMemoryBuffer* membuf = NULL ;
 397
 398         if ( m_bitmapMask )
 399         {
 400             membuf = new wxMemoryBuffer( imageSize ) ;
 401             memcpy( membuf->GetData() , dataBuffer , imageSize ) ;
 402             unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 403             int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 404             unsigned char *destalpha = (unsigned char *) membuf->GetData() ;
 405             alphaInfo = kCGImageAlphaFirst ;
 406             for ( int y = 0 ; y < h ; ++y , sourcemaskstart += maskrowbytes)
 407             {
 408                 unsigned char *sourcemask = sourcemaskstart ;
 409                 for( int x = 0 ; x < w ; ++x , sourcemask++ , destalpha += 4 )
 410                 {
 411                     *destalpha = *sourcemask ;
 412                 }
 413             }
 414         }
 415         else if ( m_hasAlpha )
 416         {
 417 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 418             alphaInfo = kCGImageAlphaPremultipliedFirst ;
 419 #else
 420             alphaInfo = kCGImageAlphaFirst ;
 421 #endif
 422             membuf = new wxMemoryBuffer( m_memBuf ) ;
 423         }
 424         else
 425         {
 426             membuf = new wxMemoryBuffer( m_memBuf ) ;
 427         }
 428         CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 429         CGDataProviderRef dataProvider =
 430             CGDataProviderCreateWithData( membuf , (const void *)membuf->GetData() , imageSize,
 431                 wxMacMemoryBufferReleaseProc );
 432         image =
 433             ::CGImageCreate( w, h, 8 , 32 , 4 * m_width , colorSpace, alphaInfo ,
 434                         dataProvider, NULL , false , kCGRenderingIntentDefault );
 435         CGDataProviderRelease( dataProvider);
 436     }
 437     else
 438     {
 439         image = m_cgImageRef ;
 440         CGImageRetain( image ) ;
 441     }
 442     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 443     {
 444         // we keep it for later use
 445         m_cgImageRef = image ;
 446         CGImageRetain( image ) ;
 447     }
 448     return image ;
 449 }
 450 #endif
 451
 452 GWorldPtr wxBitmapRefData::GetHBITMAP(GWorldPtr* mask) const
 453 {
 454     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 455     if ( mask )
 456     {
 457         *mask = NULL ;
 458         if ( m_bitmapMask )
 459             *mask = (GWorldPtr) m_bitmapMask->GetHBITMAP() ;
 460         else if ( m_hasAlpha )
 461         {
 462 #if !wxMAC_USE_CORE_GRAPHICS
 463             if ( m_rawAccessCount > 0 )
 464                 UpdateAlphaMask() ;
 465 #else
 466             // this structure is not kept in synch when using CG, so if someone
 467             // is really accessing the Graphports, we have to sync it
 468             UpdateAlphaMask() ;
 469 #endif
 470             *mask = m_hMaskBitmap ;
 471         }
 472     }
 473     return m_hBitmap ;
 474 }
 475
 476 void wxBitmapRefData::UpdateAlphaMask() const
 477 {
 478     if ( m_hasAlpha )
 479     {
 480         unsigned char *sourcemask = (unsigned char *) GetRawAccess() ;
 481         unsigned char *destalphabase = (unsigned char *) m_maskMemBuf.GetData() ;
 482
 483         int h = GetHeight() ;
 484         int w = GetWidth() ;
 485
 486         for ( int y = 0 ; y < h ; ++y , destalphabase += m_maskBytesPerRow )
 487         {
 488             unsigned char* destalpha = destalphabase ;
 489             for( int x = 0 ; x < w ; ++x , sourcemask += 4, ++destalpha )
 490             {
 491                 *destalpha = *sourcemask ;
 492             }
 493         }
 494     }
 495 }
 496
 497 void wxBitmapRefData::Free()
 498 {
 499     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 500
 501 #if wxMAC_USE_CORE_GRAPHICS
 502     if ( m_cgImageRef )
 503     {
 504         CGImageRelease( m_cgImageRef ) ;
 505         m_cgImageRef = NULL ;
 506     }
 507 #endif
 508     if ( m_hBitmap )
 509     {
 510         DisposeGWorld( MAC_WXHBITMAP(m_hBitmap) ) ;
 511         m_hBitmap = NULL ;
 512     }
 513     if ( m_hMaskBitmap )
 514     {
 515         DisposeGWorld( MAC_WXHBITMAP(m_hMaskBitmap) ) ;
 516         m_hMaskBitmap = NULL ;
 517     }
 518
 519     if (m_bitmapMask)
 520     {
 521         delete m_bitmapMask;
 522         m_bitmapMask = NULL;
 523     }
 524 }
 525
 526 wxBitmapRefData::~wxBitmapRefData()
 527 {
 528     Free() ;
 529 }
 530
 531 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 532 {
 533     int w = icon.GetWidth() ;
 534     int h = icon.GetHeight() ;
 535     Create( icon.GetWidth() , icon.GetHeight() ) ;
 536
 537     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 538     {
 539         IconFamilyHandle iconFamily = NULL ;
 540         Handle imagehandle = NewHandle(0) ;
 541         Handle maskhandle = NewHandle(0) ;
 542
 543         OSType maskType = 0;
 544         OSType dataType = 0;
 545         IconSelectorValue selector = 0 ;
 546         if ( w == 128 )
 547         {
 548             dataType = kThumbnail32BitData ;
 549             maskType = kThumbnail8BitMask ;
 550             selector = kSelectorAllAvailableData ;
 551         }
 552         else if ( w == 48 )
 553         {
 554             dataType = kHuge32BitData ;
 555             maskType = kHuge8BitMask ;
 556             selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 557         }
 558         else if ( w == 32 )
 559         {
 560             dataType = kLarge32BitData ;
 561             maskType = kLarge8BitMask ;
 562             selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 563         }
 564         else if ( w == 16 )
 565         {
 566             dataType = kSmall32BitData ;
 567             maskType = kSmall8BitMask ;
 568             selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 569         }
 570         else
 571         {
 572             wxFAIL_MSG(wxT("Illegal icon size for conversion") ) ;
 573         }
 574
 575
 576         OSStatus err = ( IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ) ;
 577
 578         err =( GetIconFamilyData( iconFamily , dataType , imagehandle ) ) ;
 579         err =( GetIconFamilyData( iconFamily , maskType , maskhandle ) ) ;
 580         wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 581         wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 582         UseAlpha() ;
 583         unsigned char *source = (unsigned char *) *imagehandle ;
 584         unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 585
 586         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 587         for ( int y = 0 ; y < h ; ++y )
 588         {
 589             for ( int x = 0 ; x < w ; ++x )
 590             {
 591                 *destination++ = *sourcemask++ ;
 592                 source++ ;
 593                 *destination++ = *source++ ;
 594                 *destination++ = *source++ ;
 595                 *destination++ = *source++ ;
 596             }
 597         }
 598         EndRawAccess() ;
 599         DisposeHandle( imagehandle ) ;
 600         DisposeHandle( maskhandle ) ;
 601     }
 602     else
 603     {
 604         wxMemoryDC dc ;
 605         dc.SelectObject( *this ) ;
 606         dc.DrawIcon( icon , 0 , 0 ) ;
 607         dc.SelectObject( wxNullBitmap ) ;
 608     }
 609     return true;
 610 }
 611
 612 wxBitmap::wxBitmap()
 613 {
 614 }
 615
 616 wxBitmap::~wxBitmap()
 617 {
 618 }
 619
 620 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 621 {
 622     m_refData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 623
 624     if ( no_bits == 1 )
 625     {
 626         int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 627         if ( the_width % (sizeof(unsigned char) * 8) ) {
 628             linesize += sizeof(unsigned char);
 629         }
 630         unsigned char* linestart = (unsigned char*) bits ;
 631         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 632         for ( int y = 0 ; y < the_height ; ++y , linestart += linesize )
 633         {
 634             for ( int x = 0 ; x < the_width ; ++x )
 635             {
 636                 int index = x / 8 ;
 637                 int bit = x % 8 ;
 638                 int mask = 1 << bit ;
 639                 if ( linestart[index] & mask )
 640                 {
 641                     *destination++ = 0xFF ;
 642                     *destination++ = 0 ;
 643                     *destination++ = 0 ;
 644                     *destination++ = 0 ;
 645                 }
 646                 else
 647                 {
 648                     *destination++ = 0xFF ;
 649                     *destination++ = 0xFF ;
 650                     *destination++ = 0xFF ;
 651                     *destination++ = 0xFF ;
 652                 }
 653             }
 654         }
 655         EndRawAccess() ;
 656     }
 657     else
 658     {
 659         wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 660     }
 661 }
 662
 663 wxBitmap::wxBitmap(int w, int h, int d)
 664 {
 665     (void)Create(w, h, d);
 666 }
 667
 668 wxBitmap::wxBitmap(void *data, wxBitmapType type, int width, int height, int depth)
 669 {
 670     (void) Create(data, type, width, height, depth);
 671 }
 672
 673 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 674 {
 675     LoadFile(filename, type);
 676 }
 677
 678 wxBitmap::wxBitmap(const char **bits)
 679 {
 680     (void) CreateFromXpm(bits);
 681 }
 682
 683 wxBitmap::wxBitmap(char **bits)
 684 {
 685     (void) CreateFromXpm((const char **)bits);
 686 }
 687
 688 void* wxBitmap::GetRawAccess() const
 689 {
 690     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 691     return M_BITMAPDATA->GetRawAccess() ;
 692 }
 693
 694 void* wxBitmap::BeginRawAccess()
 695 {
 696     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 697     return M_BITMAPDATA->BeginRawAccess() ;
 698 }
 699
 700 void wxBitmap::EndRawAccess()
 701 {
 702     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 703     M_BITMAPDATA->EndRawAccess() ;
 704 }
 705
 706 bool wxBitmap::CreateFromXpm(const char **bits)
 707 {
 708     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
 709     wxXPMDecoder decoder;
 710     wxImage img = decoder.ReadData(bits);
 711     wxCHECK_MSG( img.Ok(), FALSE, wxT("invalid bitmap data") )
 712     *this = wxBitmap(img);
 713     return TRUE;
 714 }
 715
 716 #if wxMAC_USE_CORE_GRAPHICS
 717 WXCGIMAGEREF wxBitmap::CGImageCreate() const
 718 {
 719     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 720     return M_BITMAPDATA->CGImageCreate() ;
 721 }
 722 #endif
 723
 724 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
 725 {
 726     wxCHECK_MSG( Ok() &&
 727                 (rect.x >= 0) && (rect.y >= 0) &&
 728                 (rect.x+rect.width <= GetWidth()) &&
 729                 (rect.y+rect.height <= GetHeight()),
 730                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 731
 732
 733     wxBitmap ret( rect.width, rect.height, GetDepth() );
 734     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 735
 736
 737     int sourcewidth = GetWidth() ;
 738     int destwidth = rect.width ;
 739     int destheight = rect.height ;
 740     {
 741         unsigned char * sourcedata = (unsigned char*) GetRawAccess() ;
 742         unsigned char * destdata = (unsigned char*) ret.BeginRawAccess() ;
 743         int sourcelinesize = sourcewidth * 4 ;
 744         int destlinesize = destwidth * 4 ;
 745         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
 746         unsigned char *dest = destdata ;
 747         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 748         {
 749             memcpy( dest , source , destlinesize ) ;
 750         }
 751     }
 752     ret.EndRawAccess() ;
 753
 754     if ( M_BITMAPDATA->m_bitmapMask )
 755     {
 756         wxMemoryBuffer maskbuf ;
 757         int rowBytes = ( destwidth + 3 ) & 0xFFFFFFC ;
 758         size_t maskbufsize = rowBytes * destheight ;
 759         unsigned char * destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
 760
 761         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow()  ;
 762         int destlinesize = rowBytes ;
 763         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
 764         source += rect.x + rect.y * sourcelinesize ;
 765         unsigned char *dest = destdata ;
 766
 767         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 768         {
 769             memcpy( dest , source , destlinesize ) ;
 770         }
 771         maskbuf.UngetWriteBuf( maskbufsize ) ;
 772         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
 773     }
 774     else if ( HasAlpha() )
 775         ret.UseAlpha() ;
 776
 777     return ret;
 778 }
 779
 780 bool wxBitmap::Create(int w, int h, int d)
 781 {
 782     UnRef();
 783
 784     if ( d < 0 )
 785         d = wxDisplayDepth() ;
 786
 787     m_refData = new wxBitmapRefData( w , h , d );
 788
 789     return M_BITMAPDATA->Ok() ;
 790 }
 791
 792 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
 793 {
 794     UnRef();
 795
 796     wxBitmapHandler *handler = FindHandler(type);
 797
 798     if ( handler )
 799     {
 800         m_refData = new wxBitmapRefData;
 801
 802         return handler->LoadFile(this, filename, type, -1, -1);
 803     }
 804     else
 805     {
 806         wxImage loadimage(filename, type);
 807         if (loadimage.Ok()) {
 808             *this = loadimage;
 809             return true;
 810         }
 811     }
 812     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 813     return false;
 814 }
 815
 816 bool wxBitmap::Create(void *data, wxBitmapType type, int width, int height, int depth)
 817 {
 818     UnRef();
 819
 820     m_refData = new wxBitmapRefData;
 821
 822     wxBitmapHandler *handler = FindHandler(type);
 823
 824     if ( handler == NULL ) {
 825         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 826
 827         return FALSE;
 828     }
 829
 830     return handler->Create(this, data, type, width, height, depth);
 831 }
 832
 833 wxBitmap::wxBitmap(const wxImage& image, int depth)
 834 {
 835     wxCHECK_RET( image.Ok(), wxT("invalid image") )
 836
 837     // width and height of the device-dependent bitmap
 838     int width = image.GetWidth();
 839     int height = image.GetHeight();
 840
 841     m_refData = new wxBitmapRefData( width , height , depth ) ;;
 842
 843     // Create picture
 844
 845     bool hasAlpha = false ;
 846
 847     if ( image.HasMask() )
 848     {
 849         // takes precedence, don't mix with alpha info
 850     }
 851     else
 852     {
 853         hasAlpha = image.HasAlpha() ;
 854     }
 855
 856     if ( hasAlpha )
 857         UseAlpha() ;
 858
 859     unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 860
 861     register unsigned char* data = image.GetData();
 862     const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
 863     for (int y = 0; y < height; y++)
 864     {
 865         for (int x = 0; x < width; x++)
 866         {
 867             if ( hasAlpha )
 868             {
 869                 const unsigned char a = *alpha++;
 870                 *destination++ = a ;
 871 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 872                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 873                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 874                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 875 #else
 876                 *destination++ = *data++ ;
 877                 *destination++ = *data++ ;
 878                 *destination++ = *data++ ;
 879 #endif
 880             }
 881             else
 882             {
 883                 *destination++ = 0xFF ;
 884                 *destination++ = *data++ ;
 885                 *destination++ = *data++ ;
 886                 *destination++ = *data++ ;
 887             }
 888         }
 889     }
 890     EndRawAccess() ;
 891     if ( image.HasMask() )
 892     {
 893         SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
 894     }
 895 }
 896
 897 wxImage wxBitmap::ConvertToImage() const
 898 {
 899     wxImage image;
 900
 901     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 902
 903     // create an wxImage object
 904     int width = GetWidth();
 905     int height = GetHeight();
 906     image.Create( width, height );
 907
 908     unsigned char *data = image.GetData();
 909     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
 910
 911     unsigned char* source = (unsigned char*) GetRawAccess() ;
 912
 913     bool hasAlpha = false ;
 914     bool hasMask = false ;
 915     unsigned char *alpha = NULL ;
 916     unsigned char *mask = NULL ;
 917     if ( HasAlpha() )
 918     {
 919         hasAlpha = true ;
 920     }
 921
 922     if ( GetMask() )
 923     {
 924         hasMask = true ;
 925         mask = (unsigned char*) GetMask()->GetRawAccess() ;
 926     }
 927
 928     if ( hasAlpha )
 929     {
 930         image.SetAlpha() ;
 931         alpha = image.GetAlpha() ;
 932     }
 933     int index = 0;
 934
 935     // The following masking algorithm is the same as well in msw/gtk:
 936     // the colour used as transparent one in wxImage and the one it is
 937     // replaced with when it really occurs in the bitmap
 938     static const int MASK_RED = 1;
 939     static const int MASK_GREEN = 2;
 940     static const int MASK_BLUE = 3;
 941     static const int MASK_BLUE_REPLACEMENT = 2;
 942
 943     for (int yy = 0; yy < height; yy++)
 944     {
 945         for (int xx = 0; xx < width; xx++)
 946         {
 947             long color = *((long*) source) ;
 948             unsigned char a = ((color&0xFF000000) >> 24) ;
 949             unsigned char r = ((color&0x00FF0000) >> 16) ;
 950             unsigned char g = ((color&0x0000FF00) >> 8) ;
 951             unsigned char b = (color&0x000000FF);
 952             if ( hasMask )
 953             {
 954                 if ( *mask++ == 0 )
 955                 {
 956                     if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
 957                         b = MASK_BLUE_REPLACEMENT ;
 958                 }
 959                 else
 960                 {
 961                     r = MASK_RED ;
 962                     g = MASK_GREEN ;
 963                     b = MASK_BLUE ;
 964                 }
 965             }
 966             else if ( hasAlpha )
 967                 *alpha++ = a ;
 968
 969             data[index    ] = r ;
 970             data[index + 1] = g ;
 971             data[index + 2] = b ;
 972             index += 3;
 973             source += 4 ;
 974         }
 975     }
 976     if ( hasMask )
 977         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
 978     return image;
 979 }
 980
 981
 982 bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type,
 983                         const wxPalette *palette) const
 984 {
 985     wxBitmapHandler *handler = FindHandler(type);
 986
 987     if ( handler )
 988     {
 989         return handler->SaveFile(this, filename, type, palette);
 990     }
 991     else
 992     {
 993         wxImage image = ConvertToImage();
 994
 995         return image.SaveFile(filename, type);
 996     }
 997
 998     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 999     return false;
1000 }
1001
1002 bool wxBitmap::Ok() const
1003 {
1004    return (M_BITMAPDATA && M_BITMAPDATA->Ok());
1005 }
1006
1007 int wxBitmap::GetHeight() const
1008 {
1009    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1010
1011    return M_BITMAPDATA->GetHeight();
1012 }
1013
1014 int wxBitmap::GetWidth() const
1015 {
1016    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1017
1018    return M_BITMAPDATA->GetWidth() ;
1019 }
1020
1021 int wxBitmap::GetDepth() const
1022 {
1023    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1024
1025    return M_BITMAPDATA->GetDepth();
1026 }
1027
1028 int wxBitmap::GetQuality() const
1029 {
1030     return 0;
1031 }
1032
1033 wxMask *wxBitmap::GetMask() const
1034 {
1035    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1036
1037    return M_BITMAPDATA->m_bitmapMask;
1038 }
1039
1040 bool wxBitmap::HasAlpha() const
1041 {
1042    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1043
1044    return M_BITMAPDATA->HasAlpha() ;
1045 }
1046
1047 void wxBitmap::SetWidth(int w)
1048 {
1049     if (!M_BITMAPDATA)
1050         m_refData = new wxBitmapRefData;
1051
1052     M_BITMAPDATA->SetWidth(w);
1053 }
1054
1055 void wxBitmap::SetHeight(int h)
1056 {
1057     if (!M_BITMAPDATA)
1058         m_refData = new wxBitmapRefData;
1059
1060     M_BITMAPDATA->SetHeight(h);
1061 }
1062
1063 void wxBitmap::SetDepth(int d)
1064 {
1065     if (!M_BITMAPDATA)
1066         m_refData = new wxBitmapRefData;
1067
1068     M_BITMAPDATA->SetDepth(d);
1069 }
1070
1071 void wxBitmap::SetQuality(int WXUNUSED(quality))
1072 {
1073 }
1074
1075 void wxBitmap::SetOk(bool isOk)
1076 {
1077     if (!M_BITMAPDATA)
1078         m_refData = new wxBitmapRefData;
1079
1080     M_BITMAPDATA->SetOk(isOk);
1081 }
1082
1083 #if wxUSE_PALETTE
1084 wxPalette *wxBitmap::GetPalette() const
1085 {
1086    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1087
1088    return &M_BITMAPDATA->m_bitmapPalette;
1089 }
1090
1091 void wxBitmap::SetPalette(const wxPalette& palette)
1092 {
1093     if (!M_BITMAPDATA)
1094         m_refData = new wxBitmapRefData;
1095
1096     M_BITMAPDATA->m_bitmapPalette = palette ;
1097 }
1098 #endif // wxUSE_PALETTE
1099
1100 void wxBitmap::SetMask(wxMask *mask)
1101 {
1102     if (!M_BITMAPDATA)
1103         m_refData = new wxBitmapRefData;
1104
1105     // Remove existing mask if there is one.
1106     delete M_BITMAPDATA->m_bitmapMask;
1107
1108     M_BITMAPDATA->m_bitmapMask = mask ;
1109 }
1110
1111 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1112 {
1113     return WXHBITMAP(M_BITMAPDATA->GetHBITMAP((GWorldPtr*)mask));
1114 }
1115
1116 // ----------------------------------------------------------------------------
1117 // wxMask
1118 // ----------------------------------------------------------------------------
1119
1120 wxMask::wxMask()
1121 {
1122     Init() ;
1123 }
1124
1125 // Construct a mask from a bitmap and a colour indicating
1126 // the transparent area
1127 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
1128 {
1129     Init() ;
1130     Create(bitmap, colour);
1131 }
1132
1133 // Construct a mask from a mono bitmap (copies the bitmap).
1134 wxMask::wxMask(const wxBitmap& bitmap)
1135 {
1136     Init() ;
1137     Create(bitmap);
1138 }
1139
1140 // Construct a mask from a mono bitmap (copies the bitmap).
1141 wxMask::wxMask(const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1142 {
1143     Init() ;
1144     Create(data, width , height , bytesPerRow );
1145 }
1146
1147 wxMask::~wxMask()
1148 {
1149     if ( m_maskBitmap )
1150     {
1151         DisposeGWorld( (GWorldPtr) m_maskBitmap ) ;
1152         m_maskBitmap = NULL ;
1153     }
1154 }
1155
1156 void wxMask::Init()
1157 {
1158     m_width = m_height = m_bytesPerRow = 0 ;
1159     m_maskBitmap = NULL ;
1160 }
1161
1162 void *wxMask::GetRawAccess() const
1163 {
1164     return m_memBuf.GetData() ;
1165 }
1166
1167 void wxMask::RealizeNative()
1168 {
1169     if ( m_maskBitmap )
1170     {
1171        DisposeGWorld(  (GWorldPtr) m_maskBitmap ) ;
1172        m_maskBitmap = NULL ;
1173     }
1174     Rect rect = { 0 , 0 , m_height , m_width } ;
1175     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_maskBitmap , k8IndexedGrayPixelFormat , &rect , NULL , NULL , 0 ,
1176         (char*) m_memBuf.GetData() , m_bytesPerRow ) ) ;
1177 }
1178
1179 // Create a mask from a mono bitmap (copies the bitmap).
1180 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1181 {
1182     m_memBuf = data ;
1183     m_width = width ;
1184     m_height = height ;
1185     m_bytesPerRow = bytesPerRow ;
1186     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1187     RealizeNative() ;
1188     return true ;
1189 }
1190
1191 // Create a mask from a mono bitmap (copies the bitmap).
1192 bool wxMask::Create(const wxBitmap& bitmap)
1193 {
1194     m_width = bitmap.GetWidth() ;
1195     m_height = bitmap.GetHeight() ;
1196     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1197     size_t size = m_bytesPerRow * m_height ;
1198     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1199     memset( destdatabase , 0 , size ) ;
1200     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1201     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1202     {
1203         unsigned char *destdata= destdatabase ;
1204         for( int x = 0 ; x < m_width ; ++x )
1205         {
1206             srcdata++ ;
1207             unsigned char r = *srcdata++ ;
1208             unsigned char g = *srcdata++ ;
1209             unsigned char b = *srcdata++ ;
1210             if ( ( r + g + b ) > 0x10 )
1211                 *destdata++ = 0x00 ;
1212             else
1213                 *destdata++ = 0xFF ;
1214         }
1215     }
1216     m_memBuf.UngetWriteBuf( size ) ;
1217     RealizeNative() ;
1218     return TRUE;
1219 }
1220
1221 // Create a mask from a bitmap and a colour indicating
1222 // the transparent area
1223 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1224 {
1225     m_width = bitmap.GetWidth() ;
1226     m_height = bitmap.GetHeight() ;
1227     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1228     size_t size = m_bytesPerRow * m_height ;
1229
1230     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1231     memset( destdatabase , 0 , size ) ;
1232     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1233     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow)
1234     {
1235         unsigned char *destdata= destdatabase ;
1236         for( int x = 0 ; x < m_width ; ++x )
1237         {
1238             srcdata++ ;
1239             unsigned char r = *srcdata++ ;
1240             unsigned char g = *srcdata++ ;
1241             unsigned char b = *srcdata++ ;
1242             if ( colour == wxColour( r , g , b) )
1243                 *destdata++ = 0x00 ;
1244             else
1245                 *destdata++ = 0xFF ;
1246         }
1247     }
1248     m_memBuf.UngetWriteBuf( size ) ;
1249     RealizeNative() ;
1250     return TRUE;
1251 }
1252
1253 WXHBITMAP wxMask::GetHBITMAP() const
1254 {
1255     return m_maskBitmap ;
1256 }
1257
1258 // ----------------------------------------------------------------------------
1259 // wxBitmapHandler
1260 // ----------------------------------------------------------------------------
1261
1262 wxBitmapHandler::~wxBitmapHandler()
1263 {
1264 }
1265
1266 bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
1267 {
1268     return FALSE;
1269 }
1270
1271 bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1272         int desiredWidth, int desiredHeight)
1273 {
1274     return FALSE;
1275 }
1276
1277 bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
1278 {
1279     return FALSE;
1280 }
1281
1282 // ----------------------------------------------------------------------------
1283 // Standard Handlers
1284 // ----------------------------------------------------------------------------
1285
1286 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1287 {
1288     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1289 public:
1290     inline wxPICTResourceHandler()
1291     {
1292         SetName(wxT("Macintosh Pict resource"));
1293         SetExtension(wxEmptyString);
1294         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1295     };
1296
1297     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1298           int desiredWidth, int desiredHeight);
1299 };
1300 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1301
1302 bool  wxPICTResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1303           int desiredWidth, int desiredHeight)
1304 {
1305     Str255 theName ;
1306     wxMacStringToPascal( name , theName ) ;
1307
1308     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1309     if ( thePict )
1310     {
1311         wxMetafile mf ;
1312         mf.SetHMETAFILE((WXHMETAFILE) thePict ) ;
1313         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1314         wxMemoryDC dc ;
1315         dc.SelectObject( *bitmap ) ;
1316         mf.Play( &dc ) ;
1317         dc.SelectObject( wxNullBitmap ) ;
1318         return TRUE ;
1319     }
1320     return FALSE ;
1321 }
1322
1323 void wxBitmap::InitStandardHandlers()
1324 {
1325     AddHandler(new wxPICTResourceHandler) ;
1326     AddHandler(new wxICONResourceHandler) ;
1327 }
1328
1329 // ----------------------------------------------------------------------------
1330 // raw bitmap access support
1331 // ----------------------------------------------------------------------------
1332
1333 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1334 {
1335     if ( !Ok() )
1336     {
1337         // no bitmap, no data (raw or otherwise)
1338         return NULL;
1339     }
1340
1341     data.m_width = GetWidth() ;
1342     data.m_height = GetHeight() ;
1343     data.m_stride = GetWidth() * 4 ;
1344     return GetRawAccess() ;
1345 }
1346
1347 void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
1348 {
1349     if ( !Ok() )
1350         return;
1351
1352     // TODO : if we have some information about the API we should check
1353     // this code looks strange...
1354
1355     if ( M_BITMAPDATA->HasAlpha() )
1356     {
1357         wxAlphaPixelData& data = (wxAlphaPixelData&)dataBase;
1358
1359         int w = data.GetWidth(),
1360             h = data.GetHeight();
1361
1362         wxBitmap bmpMask(GetWidth(), GetHeight(), 32);
1363         wxAlphaPixelData dataMask(bmpMask, data.GetOrigin(), wxSize(w, h));
1364         wxAlphaPixelData::Iterator pMask(dataMask),
1365                                    p(data);
1366         for ( int y = 0; y < h; y++ )
1367         {
1368             wxAlphaPixelData::Iterator rowStartMask = pMask,
1369                                        rowStart = p;
1370
1371             for ( int x = 0; x < w; x++ )
1372             {
1373                 const wxAlphaPixelData::Iterator::ChannelType
1374                     alpha = p.Alpha();
1375
1376                 pMask.Red() = alpha;
1377                 pMask.Green() = alpha;
1378                 pMask.Blue() = alpha;
1379
1380                 ++p;
1381                 ++pMask;
1382             }
1383
1384             p = rowStart;
1385             p.OffsetY(data, 1);
1386
1387             pMask = rowStartMask;
1388             pMask.OffsetY(dataMask, 1);
1389         }
1390
1391         SetMask(new wxMask(bmpMask));
1392     }
1393 }
1394
1395 void wxBitmap::UseAlpha()
1396 {
1397     // remember that we are using alpha channel, we'll need to create a proper
1398     // mask in UngetRawData()
1399     M_BITMAPDATA->UseAlpha( true );
1400 }