src/mac/carbon/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/bitmap.cpp
   3 // Purpose:     wxBitmap
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/bitmap.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/log.h"
  18     #include "wx/dcmemory.h"
  19     #include "wx/icon.h"
  20     #include "wx/image.h"
  21 #endif
  22
  23 #include "wx/metafile.h"
  24 #include "wx/xpmdecod.h"
  25
  26 #include "wx/rawbmp.h"
  27
  28 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
  29 IMPLEMENT_DYNAMIC_CLASS(wxMask, 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 use premultiplied alpha yet
  50 #define wxMAC_USE_PREMULTIPLIED_ALPHA 0
  51
  52 #if wxUSE_BMPBUTTON
  53
  54 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
  55 {
  56     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
  57     if ( bitmap.Ok() )
  58     {
  59         wxBitmapRefData * bmap = bitmap.GetBitmapData() ;
  60         if ( bmap == NULL )
  61             return ;
  62
  63         if ( ( bmap->HasNativeSize() && forceType == 0 ) || forceType == kControlContentIconRef )
  64         {
  65             wxBitmap scaleBmp ;
  66             wxBitmapRefData* bmp = bmap ;
  67
  68             if ( !bmap->HasNativeSize() )
  69             {
  70                 // as PICT conversion will only result in a 16x16 icon, let's attempt
  71                 // a few scales for better results
  72
  73                 int w = bitmap.GetWidth() ;
  74                 int h = bitmap.GetHeight() ;
  75                 int sz = wxMax( w , h ) ;
  76                 if ( sz == 24 || sz == 64 )
  77                 {
  78                     scaleBmp = wxBitmap( bitmap.ConvertToImage().Scale( w * 2 , h * 2 ) ) ;
  79                     bmp = scaleBmp.GetBitmapData() ;
  80                 }
  81             }
  82
  83             info->contentType = kControlContentIconRef ;
  84             info->u.iconRef = bmp->GetIconRef() ;
  85             AcquireIconRef( info->u.iconRef ) ;
  86         }
  87 #if defined( __WXMAC_OSX__ ) && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
  88         else if ( forceType == kControlContentCGImageRef )
  89         {
  90             info->contentType = kControlContentCGImageRef ;
  91             info->u.imageRef = (CGImageRef) bmap->CGImageCreate() ;
  92         }
  93 #endif
  94         else
  95         {
  96 #ifndef __LP64__
  97             info->contentType = kControlContentPictHandle ;
  98             info->u.picture = bmap->GetPictHandle() ;
  99 #endif
 100         }
 101     }
 102 }
 103
 104 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
 105 {
 106     if ( info->contentType == kControlContentIconRef )
 107     {
 108         ReleaseIconRef( info->u.iconRef ) ;
 109     }
 110     else if ( info->contentType == kControlNoContent )
 111     {
 112         // there's no bitmap at all, fall through silently
 113     }
 114     else if ( info->contentType == kControlContentPictHandle )
 115     {
 116         // owned by the bitmap, no release here
 117     }
 118 #if defined( __WXMAC_OSX__ ) && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
 119     else if ( info->contentType == kControlContentCGImageRef )
 120     {
 121         CGImageRelease( info->u.imageRef ) ;
 122     }
 123 #endif
 124     else
 125     {
 126         wxFAIL_MSG(wxT("Unexpected bitmap type") ) ;
 127     }
 128 }
 129
 130 #endif //wxUSE_BMPBUTTON
 131
 132 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
 133
 134 void wxBitmapRefData::Init()
 135 {
 136     m_width = 0 ;
 137     m_height = 0 ;
 138     m_depth = 0 ;
 139     m_ok = false ;
 140     m_bitmapMask = NULL ;
 141
 142 #ifdef __WXMAC_OSX__
 143     m_cgImageRef = NULL ;
 144 #endif
 145
 146     m_iconRef = NULL ;
 147     m_pictHandle = NULL ;
 148     m_hBitmap = NULL ;
 149     m_hMaskBitmap = NULL;
 150     m_maskBytesPerRow = 0 ;
 151
 152     m_rawAccessCount = 0 ;
 153     m_hasAlpha = false;
 154 }
 155
 156 wxBitmapRefData::wxBitmapRefData()
 157 {
 158     Init() ;
 159 }
 160
 161 wxBitmapRefData::wxBitmapRefData( int w , int h , int d )
 162 {
 163     Init() ;
 164     Create( w , h , d ) ;
 165 }
 166
 167 bool wxBitmapRefData::Create( int w , int h , int d )
 168 {
 169     m_width = wxMax(1, w);
 170     m_height = wxMax(1, h);
 171     m_depth = d ;
 172
 173     m_bytesPerRow = w * 4 ;
 174     size_t size = m_bytesPerRow * h ;
 175     void* data = m_memBuf.GetWriteBuf( size ) ;
 176     memset( data , 0 , size ) ;
 177     m_memBuf.UngetWriteBuf( size ) ;
 178
 179     m_hBitmap = NULL ;
 180     Rect rect = { 0 , 0 , m_height , m_width } ;
 181 #ifndef __LP64__
 182     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 183         (char*) data , m_bytesPerRow ) ) ;
 184     wxASSERT_MSG( m_hBitmap , wxT("Unable to create GWorld context") ) ;
 185 #endif
 186     m_ok = ( m_hBitmap != NULL ) ;
 187
 188     return m_ok ;
 189 }
 190
 191 void wxBitmapRefData::UseAlpha( bool use )
 192 {
 193     if ( m_hasAlpha == use )
 194         return ;
 195
 196     m_hasAlpha = use ;
 197     if ( m_hasAlpha )
 198     {
 199         wxASSERT( m_hMaskBitmap == NULL ) ;
 200
 201         int width = GetWidth() ;
 202         int height = GetHeight() ;
 203         m_maskBytesPerRow = ( width * 4 + 3 ) & 0xFFFFFFC ;
 204         size_t size = height * m_maskBytesPerRow ;
 205         unsigned char * data = (unsigned char * ) m_maskMemBuf.GetWriteBuf( size ) ;
 206         wxASSERT( data != NULL ) ;
 207
 208         memset( data , 0 , size ) ;
 209         Rect rect = { 0 , 0 , height , width } ;
 210 #ifndef __LP64__
 211         verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hMaskBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 212             (char*) data , m_maskBytesPerRow ) ) ;
 213         wxASSERT_MSG( m_hMaskBitmap , wxT("Unable to create GWorld context for alpha mask") ) ;
 214 #endif
 215         m_maskMemBuf.UngetWriteBuf(size) ;
 216
 217 #if !wxMAC_USE_CORE_GRAPHICS
 218         UpdateAlphaMask() ;
 219 #endif
 220     }
 221     else
 222     {
 223 #ifndef __LP64__
 224         DisposeGWorld( m_hMaskBitmap ) ;
 225 #endif
 226         m_hMaskBitmap = NULL ;
 227         m_maskBytesPerRow = 0 ;
 228     }
 229 }
 230
 231 void *wxBitmapRefData::GetRawAccess() const
 232 {
 233     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 234     return m_memBuf.GetData() ;
 235 }
 236
 237 void *wxBitmapRefData::BeginRawAccess()
 238 {
 239     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") ) ;
 240     wxASSERT( m_rawAccessCount == 0 ) ;
 241     wxASSERT_MSG( m_pictHandle == NULL && m_iconRef == NULL ,
 242         wxT("Currently, modifing bitmaps that are used in controls already is not supported") ) ;
 243
 244     ++m_rawAccessCount ;
 245
 246 #ifdef __WXMAC_OSX__
 247     // we must destroy an existing cached image, as
 248     // the bitmap data may change now
 249     if ( m_cgImageRef )
 250     {
 251         CGImageRelease( m_cgImageRef ) ;
 252         m_cgImageRef = NULL ;
 253     }
 254 #endif
 255
 256     return m_memBuf.GetData() ;
 257 }
 258
 259 void wxBitmapRefData::EndRawAccess()
 260 {
 261     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 262     wxASSERT( m_rawAccessCount == 1 ) ;
 263
 264     --m_rawAccessCount ;
 265
 266 #if !wxMAC_USE_CORE_GRAPHICS
 267     UpdateAlphaMask() ;
 268 #endif
 269 }
 270
 271 bool wxBitmapRefData::HasNativeSize()
 272 {
 273     int w = GetWidth() ;
 274     int h = GetHeight() ;
 275     int sz = wxMax( w , h ) ;
 276
 277     return ( sz == 128 || sz == 48 || sz == 32 || sz == 16 );
 278 }
 279
 280 IconRef wxBitmapRefData::GetIconRef()
 281 {
 282     if ( m_iconRef == NULL )
 283     {
 284         // Create Icon Family Handle
 285
 286         IconFamilyHandle iconFamily = NULL ;
 287
 288 #ifdef WORDS_BIGENDIAN
 289         iconFamily = (IconFamilyHandle) NewHandle( 8 ) ;
 290         (**iconFamily).resourceType = kIconFamilyType ;
 291         (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
 292 #else
 293         // test this solution on big endian as well
 294         iconFamily = (IconFamilyHandle) NewHandle( 0 ) ;
 295 #endif
 296
 297         int w = GetWidth() ;
 298         int h = GetHeight() ;
 299         int sz = wxMax( w , h ) ;
 300
 301         OSType dataType = 0 ;
 302         OSType maskType = 0 ;
 303
 304         switch (sz)
 305         {
 306             case 128:
 307                 dataType = kThumbnail32BitData ;
 308                 maskType = kThumbnail8BitMask ;
 309                 break;
 310
 311             case 48:
 312                 dataType = kHuge32BitData ;
 313                 maskType = kHuge8BitMask ;
 314                 break;
 315
 316             case 32:
 317                 dataType = kLarge32BitData ;
 318                 maskType = kLarge8BitMask ;
 319                 break;
 320
 321             case 16:
 322                 dataType = kSmall32BitData ;
 323                 maskType = kSmall8BitMask ;
 324                 break;
 325
 326             default:
 327                 break;
 328         }
 329
 330         if ( dataType != 0 )
 331         {
 332             // setup the header properly
 333
 334             Handle data = NULL ;
 335             Handle maskdata = NULL ;
 336             unsigned char * maskptr = NULL ;
 337             unsigned char * ptr = NULL ;
 338             size_t datasize, masksize ;
 339
 340             datasize = sz * sz * 4 ;
 341             data = NewHandle( datasize ) ;
 342             HLock( data ) ;
 343             ptr = (unsigned char*) *data ;
 344             memset( ptr , 0, datasize ) ;
 345
 346             masksize = sz * sz ;
 347             maskdata = NewHandle( masksize ) ;
 348             HLock( maskdata ) ;
 349             maskptr = (unsigned char*) *maskdata ;
 350             memset( maskptr , 0 , masksize ) ;
 351
 352             bool hasAlpha = HasAlpha() ;
 353             wxMask *mask = m_bitmapMask ;
 354             unsigned char * source = (unsigned char*) GetRawAccess() ;
 355             unsigned char * masksource = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 356
 357             for ( int y = 0 ; y < h ; ++y )
 358             {
 359                 unsigned char * dest = ptr + y * sz * 4 ;
 360                 unsigned char * maskdest = maskptr + y * sz ;
 361                 unsigned char a, r, g, b;
 362
 363                 for ( int x = 0 ; x < w ; ++x )
 364                 {
 365                     a = *source ++ ;
 366                     r = *source ++ ;
 367                     g = *source ++ ;
 368                     b = *source ++ ;
 369
 370                     *dest++ = 0 ;
 371                     *dest++ = r ;
 372                     *dest++ = g ;
 373                     *dest++ = b ;
 374
 375                     if ( mask )
 376                     {
 377                         *maskdest++ = 0xFF - *masksource++ ;
 378                         masksource++ ;
 379                         masksource++ ;
 380                         masksource++ ;
 381                     }
 382                     else if ( hasAlpha )
 383                         *maskdest++ = a ;
 384                     else
 385                         *maskdest++ = 0xFF ;
 386                 }
 387             }
 388
 389             OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 390             wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 391
 392             err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 393             wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 394
 395             HUnlock( data ) ;
 396             HUnlock( maskdata ) ;
 397             DisposeHandle( data ) ;
 398             DisposeHandle( maskdata ) ;
 399         }
 400         else
 401         {
 402             PicHandle pic = GetPictHandle() ;
 403             SetIconFamilyData( iconFamily, 'PICT' , (Handle) pic ) ;
 404         }
 405         // transform into IconRef
 406 #if defined( __WXMAC_OSX__ ) && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
 407         // cleaner version existing from 10.3 upwards
 408         HLock((Handle) iconFamily);
 409         OSStatus err = GetIconRefFromIconFamilyPtr( *iconFamily, GetHandleSize((Handle) iconFamily), &m_iconRef );
 410         HUnlock((Handle) iconFamily);
 411         wxASSERT_MSG( err == noErr , wxT("Error when constructing icon ref") );
 412 #else
 413         static int iconCounter = 2 ;
 414
 415         OSStatus err = RegisterIconRefFromIconFamily( 'WXNG' , (OSType) iconCounter, iconFamily, &m_iconRef ) ;
 416         wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 417
 418         // we have to retain a reference, as Unregister will decrement it
 419         AcquireIconRef( m_iconRef ) ;
 420         UnregisterIconRef( 'WXNG' , (OSType) iconCounter ) ;
 421         ++iconCounter ;
 422 #endif
 423         DisposeHandle( (Handle) iconFamily ) ;
 424     }
 425
 426     return m_iconRef ;
 427 }
 428
 429 PicHandle wxBitmapRefData::GetPictHandle()
 430 {
 431     if ( m_pictHandle == NULL )
 432     {
 433 #ifndef __LP64__
 434         CGrafPtr origPort = NULL ;
 435         GDHandle origDev = NULL ;
 436         GWorldPtr wp = NULL ;
 437         GWorldPtr mask = NULL ;
 438         int height = GetHeight() ;
 439         int width = GetWidth() ;
 440
 441         Rect rect = { 0 , 0 , height , width } ;
 442         RgnHandle clipRgn = NULL ;
 443
 444         GetGWorld( &origPort , &origDev ) ;
 445         wp = GetHBITMAP( &mask ) ;
 446
 447         if ( mask )
 448         {
 449             GWorldPtr monoworld ;
 450             clipRgn = NewRgn() ;
 451             OSStatus err = NewGWorld( &monoworld , 1 , &rect , NULL , NULL , 0 ) ;
 452             verify_noerr(err) ;
 453             LockPixels( GetGWorldPixMap( monoworld ) ) ;
 454             LockPixels( GetGWorldPixMap( mask ) ) ;
 455             SetGWorld( monoworld , NULL ) ;
 456
 457             RGBColor white = { 0xffff , 0xffff , 0xffff } ;
 458             RGBColor black = { 0x0000 , 0x0000 , 0x0000 } ;
 459             RGBForeColor( &black ) ;
 460             RGBBackColor( &white ) ;
 461
 462             CopyBits(GetPortBitMapForCopyBits(mask),
 463                     GetPortBitMapForCopyBits(monoworld),
 464                     &rect,
 465                     &rect,
 466                     srcCopy, NULL);
 467             BitMapToRegion( clipRgn , (BitMap*) *GetGWorldPixMap( monoworld ) ) ;
 468
 469             UnlockPixels( GetGWorldPixMap( monoworld ) ) ;
 470             UnlockPixels( GetGWorldPixMap( mask ) ) ;
 471             DisposeGWorld( monoworld ) ;
 472         }
 473
 474         SetGWorld( wp , NULL ) ;
 475         Rect portRect ;
 476         GetPortBounds( wp , &portRect ) ;
 477         m_pictHandle = OpenPicture(&portRect);
 478
 479         if (m_pictHandle)
 480         {
 481             RGBColor white = { 0xffff , 0xffff , 0xffff } ;
 482             RGBColor black = { 0x0000 , 0x0000 , 0x0000 } ;
 483
 484             RGBForeColor( &black ) ;
 485             RGBBackColor( &white ) ;
 486
 487             if ( clipRgn )
 488                 SetClip( clipRgn ) ;
 489
 490             LockPixels( GetGWorldPixMap( wp ) ) ;
 491             CopyBits(GetPortBitMapForCopyBits(wp),
 492                     GetPortBitMapForCopyBits(wp),
 493                     &portRect,
 494                     &portRect,
 495                     srcCopy,clipRgn);
 496             UnlockPixels( GetGWorldPixMap( wp ) ) ;
 497             ClosePicture();
 498         }
 499
 500         SetGWorld( origPort , origDev ) ;
 501         if ( clipRgn )
 502             DisposeRgn( clipRgn ) ;
 503 #endif
 504     }
 505
 506     return m_pictHandle ;
 507 }
 508
 509 #ifdef __WXMAC_OSX__
 510 void wxMacMemoryBufferReleaseProc(void *info, const void *data, size_t size)
 511 {
 512     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
 513
 514     wxASSERT( data == membuf->GetData() ) ;
 515
 516     delete membuf ;
 517 }
 518
 519 CGImageRef wxBitmapRefData::CGImageCreate() const
 520 {
 521     wxASSERT( m_ok ) ;
 522     wxASSERT( m_rawAccessCount >= 0 ) ;
 523     CGImageRef image ;
 524     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 525     {
 526         size_t imageSize = m_width * m_height * 4 ;
 527         void * dataBuffer = m_memBuf.GetData() ;
 528         int w = m_width ;
 529         int h = m_height ;
 530         CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 531         wxMemoryBuffer* membuf = NULL ;
 532
 533         if ( m_bitmapMask )
 534         {
 535             alphaInfo = kCGImageAlphaFirst ;
 536             membuf = new wxMemoryBuffer( imageSize ) ;
 537             memcpy( membuf->GetData() , dataBuffer , imageSize ) ;
 538             unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 539             int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 540             unsigned char *destalpha = (unsigned char *) membuf->GetData() ;
 541             for ( int y = 0 ; y < h ; ++y , sourcemaskstart += maskrowbytes)
 542             {
 543                 unsigned char *sourcemask = sourcemaskstart ;
 544                 for ( int x = 0 ; x < w ; ++x , sourcemask += 4 , destalpha += 4 )
 545                 {
 546                     *destalpha = 0xFF - *sourcemask ;
 547                 }
 548             }
 549         }
 550         else
 551         {
 552             if ( m_hasAlpha )
 553             {
 554 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 555                 alphaInfo = kCGImageAlphaPremultipliedFirst ;
 556 #else
 557                 alphaInfo = kCGImageAlphaFirst ;
 558 #endif
 559             }
 560
 561             membuf = new wxMemoryBuffer( m_memBuf ) ;
 562         }
 563
 564         CGDataProviderRef dataProvider = NULL ;
 565         if ( m_depth == 1 )
 566         {
 567             wxMemoryBuffer* maskBuf = new wxMemoryBuffer( m_width * m_height );
 568             unsigned char * maskBufData = (unsigned char *) maskBuf->GetData();
 569             unsigned char * bufData = (unsigned char *) membuf->GetData() ;
 570             // copy one color component
 571             for( int i = 0 ; i < m_width * m_height ; ++i )
 572                 maskBufData[i] = bufData[i*4+3];
 573             dataProvider =
 574                 CGDataProviderCreateWithData(
 575                     maskBuf , (const void *) maskBufData , m_width * m_height,
 576                     wxMacMemoryBufferReleaseProc );
 577             // as we are now passing the mask buffer to the data provider, we have
 578             // to release the membuf ourselves
 579             delete membuf ;
 580
 581             image = ::CGImageMaskCreate( w, h, 8, 8, m_width , dataProvider, NULL, false );
 582         }
 583         else
 584         {
 585             CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 586             dataProvider =
 587                 CGDataProviderCreateWithData(
 588                     membuf , (const void *)membuf->GetData() , imageSize,
 589                     wxMacMemoryBufferReleaseProc );
 590             image =
 591             ::CGImageCreate(
 592                 w, h, 8 , 32 , 4 * m_width , colorSpace, alphaInfo ,
 593                 dataProvider, NULL , false , kCGRenderingIntentDefault );
 594         }
 595         CGDataProviderRelease( dataProvider);
 596     }
 597     else
 598     {
 599         image = m_cgImageRef ;
 600         CGImageRetain( image ) ;
 601     }
 602
 603     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 604     {
 605         // we keep it for later use
 606         m_cgImageRef = image ;
 607         CGImageRetain( image ) ;
 608     }
 609
 610     return image ;
 611 }
 612 #endif
 613
 614 GWorldPtr wxBitmapRefData::GetHBITMAP(GWorldPtr* mask) const
 615 {
 616     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 617     if ( mask )
 618     {
 619         *mask = NULL ;
 620         if ( m_bitmapMask )
 621         {
 622             *mask = (GWorldPtr) m_bitmapMask->GetHBITMAP() ;
 623         }
 624         else if ( m_hasAlpha )
 625         {
 626 #if !wxMAC_USE_CORE_GRAPHICS
 627             if ( m_rawAccessCount > 0 )
 628                 UpdateAlphaMask() ;
 629 #else
 630             // this structure is not kept in synch when using CG, so if something
 631             // is really accessing the GrafPorts, we have to sync it
 632             UpdateAlphaMask() ;
 633 #endif
 634
 635             *mask = m_hMaskBitmap ;
 636         }
 637     }
 638
 639     return m_hBitmap ;
 640 }
 641
 642 void wxBitmapRefData::UpdateAlphaMask() const
 643 {
 644     if ( m_hasAlpha )
 645     {
 646         unsigned char *sourcemask = (unsigned char *) GetRawAccess() ;
 647         unsigned char *destalphabase = (unsigned char *) m_maskMemBuf.GetData() ;
 648
 649         int h = GetHeight() ;
 650         int w = GetWidth() ;
 651
 652         for ( int y = 0 ; y < h ; ++y , destalphabase += m_maskBytesPerRow )
 653         {
 654             unsigned char* destalpha = destalphabase ;
 655
 656             for ( int x = 0 ; x < w ; ++x , sourcemask += 4 )
 657             {
 658                 // we must have 24 bit depth for non quartz smooth alpha
 659                 *destalpha++ = 255 ;
 660                 *destalpha++ = 255  - *sourcemask ;
 661                 *destalpha++ = 255  - *sourcemask ;
 662                 *destalpha++ = 255  - *sourcemask ;
 663             }
 664         }
 665     }
 666 }
 667
 668 void wxBitmapRefData::Free()
 669 {
 670     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 671
 672 #ifdef __WXMAC_OSX__
 673     if ( m_cgImageRef )
 674     {
 675         CGImageRelease( m_cgImageRef ) ;
 676         m_cgImageRef = NULL ;
 677     }
 678 #endif
 679
 680     if ( m_iconRef )
 681     {
 682         ReleaseIconRef( m_iconRef ) ;
 683         m_iconRef = NULL ;
 684     }
 685
 686 #ifndef __LP64__
 687     if ( m_pictHandle )
 688     {
 689         KillPicture( m_pictHandle ) ;
 690         m_pictHandle = NULL ;
 691     }
 692
 693     if ( m_hBitmap )
 694     {
 695         DisposeGWorld( MAC_WXHBITMAP(m_hBitmap) ) ;
 696         m_hBitmap = NULL ;
 697     }
 698
 699     if ( m_hMaskBitmap )
 700     {
 701         DisposeGWorld( MAC_WXHBITMAP(m_hMaskBitmap) ) ;
 702         m_hMaskBitmap = NULL ;
 703     }
 704 #endif
 705     if (m_bitmapMask)
 706     {
 707         delete m_bitmapMask;
 708         m_bitmapMask = NULL;
 709     }
 710 }
 711
 712 wxBitmapRefData::~wxBitmapRefData()
 713 {
 714     Free() ;
 715 }
 716
 717 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 718 {
 719     bool created = false ;
 720     int w = icon.GetWidth() ;
 721     int h = icon.GetHeight() ;
 722
 723     Create( icon.GetWidth() , icon.GetHeight() ) ;
 724
 725     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 726     {
 727         IconFamilyHandle iconFamily = NULL ;
 728         Handle imagehandle = NewHandle( 0 ) ;
 729         Handle maskhandle = NewHandle( 0 ) ;
 730
 731         OSType maskType = 0;
 732         OSType dataType = 0;
 733         IconSelectorValue selector = 0 ;
 734
 735         switch (w)
 736         {
 737             case 128:
 738                 dataType = kThumbnail32BitData ;
 739                 maskType = kThumbnail8BitMask ;
 740                 selector = kSelectorAllAvailableData ;
 741                 break;
 742
 743             case 48:
 744                 dataType = kHuge32BitData ;
 745                 maskType = kHuge8BitMask ;
 746                 selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 747                 break;
 748
 749             case 32:
 750                 dataType = kLarge32BitData ;
 751                 maskType = kLarge8BitMask ;
 752                 selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 753                 break;
 754
 755             case 16:
 756                 dataType = kSmall32BitData ;
 757                 maskType = kSmall8BitMask ;
 758                 selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 759                 break;
 760
 761             default:
 762                 break;
 763         }
 764
 765         OSStatus err = IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ;
 766
 767         err = GetIconFamilyData( iconFamily , dataType , imagehandle ) ;
 768         err = GetIconFamilyData( iconFamily , maskType , maskhandle ) ;
 769         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 770         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 771
 772         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 773         {
 774             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 775             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 776
 777             UseAlpha() ;
 778
 779             unsigned char *source = (unsigned char *) *imagehandle ;
 780             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 781             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 782
 783             for ( int y = 0 ; y < h ; ++y )
 784             {
 785                 for ( int x = 0 ; x < w ; ++x )
 786                 {
 787                     *destination++ = *sourcemask++ ;
 788                     source++ ;
 789                     *destination++ = *source++ ;
 790                     *destination++ = *source++ ;
 791                     *destination++ = *source++ ;
 792                 }
 793             }
 794
 795             EndRawAccess() ;
 796             DisposeHandle( imagehandle ) ;
 797             DisposeHandle( maskhandle ) ;
 798             created = true ;
 799         }
 800
 801         DisposeHandle( (Handle) iconFamily ) ;
 802     }
 803
 804     if ( !created )
 805     {
 806         wxMemoryDC dc ;
 807         dc.SelectObject( *this ) ;
 808         dc.DrawIcon( icon , 0 , 0 ) ;
 809         dc.SelectObject( wxNullBitmap ) ;
 810     }
 811
 812     return true;
 813 }
 814
 815 wxBitmap::wxBitmap()
 816 {
 817 }
 818
 819 wxBitmap::~wxBitmap()
 820 {
 821 }
 822
 823 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 824 {
 825     m_refData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 826
 827     if ( no_bits == 1 )
 828     {
 829         int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 830         if ( the_width % (sizeof(unsigned char) * 8) )
 831             linesize += sizeof(unsigned char);
 832
 833         unsigned char* linestart = (unsigned char*) bits ;
 834         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 835
 836         for ( int y = 0 ; y < the_height ; ++y , linestart += linesize )
 837         {
 838             int index, bit, mask;
 839
 840             for ( int x = 0 ; x < the_width ; ++x )
 841             {
 842                 index = x / 8 ;
 843                 bit = x % 8 ;
 844                 mask = 1 << bit ;
 845
 846                 if ( linestart[index] & mask )
 847                 {
 848                     *destination++ = 0xFF ;
 849                     *destination++ = 0 ;
 850                     *destination++ = 0 ;
 851                     *destination++ = 0 ;
 852                 }
 853                 else
 854                 {
 855                     *destination++ = 0xFF ;
 856                     *destination++ = 0xFF ;
 857                     *destination++ = 0xFF ;
 858                     *destination++ = 0xFF ;
 859                 }
 860             }
 861         }
 862
 863         EndRawAccess() ;
 864     }
 865     else
 866     {
 867         wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 868     }
 869 }
 870
 871 wxBitmap::wxBitmap(int w, int h, int d)
 872 {
 873     (void)Create(w, h, d);
 874 }
 875
 876 wxBitmap::wxBitmap(const void* data, wxBitmapType type, int width, int height, int depth)
 877 {
 878     (void) Create(data, type, width, height, depth);
 879 }
 880
 881 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 882 {
 883     LoadFile(filename, type);
 884 }
 885
 886 void * wxBitmap::GetRawAccess() const
 887 {
 888     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 889
 890     return M_BITMAPDATA->GetRawAccess() ;
 891 }
 892
 893 void * wxBitmap::BeginRawAccess()
 894 {
 895     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 896
 897     return M_BITMAPDATA->BeginRawAccess() ;
 898 }
 899
 900 void wxBitmap::EndRawAccess()
 901 {
 902     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 903
 904     M_BITMAPDATA->EndRawAccess() ;
 905 }
 906
 907 #ifdef __WXMAC_OSX__
 908 WXCGIMAGEREF wxBitmap::CGImageCreate() const
 909 {
 910     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 911
 912     return M_BITMAPDATA->CGImageCreate() ;
 913 }
 914 #endif
 915
 916 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
 917 {
 918     wxCHECK_MSG( Ok() &&
 919                 (rect.x >= 0) && (rect.y >= 0) &&
 920                 (rect.x+rect.width <= GetWidth()) &&
 921                 (rect.y+rect.height <= GetHeight()),
 922                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 923
 924     wxBitmap ret( rect.width, rect.height, GetDepth() );
 925     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 926
 927     int sourcewidth = GetWidth() ;
 928     int destwidth = rect.width ;
 929     int destheight = rect.height ;
 930
 931     {
 932         unsigned char *sourcedata = (unsigned char*) GetRawAccess() ;
 933         unsigned char *destdata = (unsigned char*) ret.BeginRawAccess() ;
 934         wxASSERT( (sourcedata != NULL) && (destdata != NULL) ) ;
 935
 936         int sourcelinesize = sourcewidth * 4 ;
 937         int destlinesize = destwidth * 4 ;
 938         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
 939         unsigned char *dest = destdata ;
 940
 941         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 942         {
 943             memcpy( dest , source , destlinesize ) ;
 944         }
 945     }
 946
 947     ret.EndRawAccess() ;
 948
 949     if ( M_BITMAPDATA->m_bitmapMask )
 950     {
 951         wxMemoryBuffer maskbuf ;
 952         int rowBytes = ( destwidth * 4 + 3 ) & 0xFFFFFFC ;
 953         size_t maskbufsize = rowBytes * destheight ;
 954
 955         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow() ;
 956         int destlinesize = rowBytes ;
 957
 958         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
 959         unsigned char *destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
 960         wxASSERT( (source != NULL) && (destdata != NULL) ) ;
 961
 962         source += rect.x * 4 + rect.y * sourcelinesize ;
 963         unsigned char *dest = destdata ;
 964
 965         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 966         {
 967             memcpy( dest , source , destlinesize ) ;
 968         }
 969
 970         maskbuf.UngetWriteBuf( maskbufsize ) ;
 971         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
 972     }
 973     else if ( HasAlpha() )
 974         ret.UseAlpha() ;
 975
 976     return ret;
 977 }
 978
 979 bool wxBitmap::Create(int w, int h, int d)
 980 {
 981     UnRef();
 982
 983     if ( d < 0 )
 984         d = wxDisplayDepth() ;
 985
 986     m_refData = new wxBitmapRefData( w , h , d );
 987
 988     return M_BITMAPDATA->Ok() ;
 989 }
 990
 991 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
 992 {
 993     UnRef();
 994
 995     wxBitmapHandler *handler = FindHandler(type);
 996
 997     if ( handler )
 998     {
 999         m_refData = new wxBitmapRefData;
1000
1001         return handler->LoadFile(this, filename, type, -1, -1);
1002     }
1003     else
1004     {
1005 #if wxUSE_IMAGE
1006         wxImage loadimage(filename, type);
1007         if (loadimage.Ok())
1008         {
1009             *this = loadimage;
1010
1011             return true;
1012         }
1013 #endif
1014     }
1015
1016     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1017
1018     return false;
1019 }
1020
1021 bool wxBitmap::Create(const void* data, wxBitmapType type, int width, int height, int depth)
1022 {
1023     UnRef();
1024
1025     m_refData = new wxBitmapRefData;
1026
1027     wxBitmapHandler *handler = FindHandler(type);
1028
1029     if ( handler == NULL )
1030     {
1031         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1032
1033         return false;
1034     }
1035
1036     return handler->Create(this, data, type, width, height, depth);
1037 }
1038
1039 #if wxUSE_IMAGE
1040
1041 wxBitmap::wxBitmap(const wxImage& image, int depth)
1042 {
1043     wxCHECK_RET( image.Ok(), wxT("invalid image") );
1044
1045     // width and height of the device-dependent bitmap
1046     int width = image.GetWidth();
1047     int height = image.GetHeight();
1048
1049     m_refData = new wxBitmapRefData( width , height , depth ) ;
1050
1051     // Create picture
1052
1053     bool hasAlpha = false ;
1054
1055     if ( image.HasMask() )
1056     {
1057         // takes precedence, don't mix with alpha info
1058     }
1059     else
1060     {
1061         hasAlpha = image.HasAlpha() ;
1062     }
1063
1064     if ( hasAlpha )
1065         UseAlpha() ;
1066
1067     unsigned char* destination = (unsigned char*) BeginRawAccess() ;
1068     register unsigned char* data = image.GetData();
1069     const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
1070
1071     for (int y = 0; y < height; y++)
1072     {
1073         for (int x = 0; x < width; x++)
1074         {
1075             if ( hasAlpha )
1076             {
1077                 const unsigned char a = *alpha++;
1078                 *destination++ = a ;
1079
1080 #if wxMAC_USE_PREMULTIPLIED_ALPHA
1081                 *destination++ = ((*data++) * a + 127) / 255 ;
1082                 *destination++ = ((*data++) * a + 127) / 255 ;
1083                 *destination++ = ((*data++) * a + 127) / 255 ;
1084 #else
1085                 *destination++ = *data++ ;
1086                 *destination++ = *data++ ;
1087                 *destination++ = *data++ ;
1088 #endif
1089             }
1090             else
1091             {
1092                 *destination++ = 0xFF ;
1093                 *destination++ = *data++ ;
1094                 *destination++ = *data++ ;
1095                 *destination++ = *data++ ;
1096             }
1097         }
1098     }
1099
1100     EndRawAccess() ;
1101     if ( image.HasMask() )
1102         SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
1103 }
1104
1105 wxImage wxBitmap::ConvertToImage() const
1106 {
1107     wxImage image;
1108
1109     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
1110
1111     // create an wxImage object
1112     int width = GetWidth();
1113     int height = GetHeight();
1114     image.Create( width, height );
1115
1116     unsigned char *data = image.GetData();
1117     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
1118
1119     unsigned char* source = (unsigned char*) GetRawAccess() ;
1120
1121     bool hasAlpha = false ;
1122     bool hasMask = false ;
1123     int maskBytesPerRow = 0 ;
1124     unsigned char *alpha = NULL ;
1125     unsigned char *mask = NULL ;
1126
1127     if ( HasAlpha() )
1128         hasAlpha = true ;
1129
1130     if ( GetMask() )
1131     {
1132         hasMask = true ;
1133         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1134         maskBytesPerRow = GetMask()->GetBytesPerRow() ;
1135     }
1136
1137     if ( hasAlpha )
1138     {
1139         image.SetAlpha() ;
1140         alpha = image.GetAlpha() ;
1141     }
1142
1143     int index = 0;
1144
1145     // The following masking algorithm is the same as well in msw/gtk:
1146     // the colour used as transparent one in wxImage and the one it is
1147     // replaced with when it actually occurs in the bitmap
1148     static const int MASK_RED = 1;
1149     static const int MASK_GREEN = 2;
1150     static const int MASK_BLUE = 3;
1151     static const int MASK_BLUE_REPLACEMENT = 2;
1152
1153     for (int yy = 0; yy < height; yy++ , mask += maskBytesPerRow )
1154     {
1155         unsigned char * maskp = mask ;
1156         unsigned char a, r, g, b;
1157         long color;
1158
1159         for (int xx = 0; xx < width; xx++)
1160         {
1161             color = *((long*) source) ;
1162 #ifdef WORDS_BIGENDIAN
1163             a = ((color&0xFF000000) >> 24) ;
1164             r = ((color&0x00FF0000) >> 16) ;
1165             g = ((color&0x0000FF00) >> 8) ;
1166             b = (color&0x000000FF);
1167 #else
1168             b = ((color&0xFF000000) >> 24) ;
1169             g = ((color&0x00FF0000) >> 16) ;
1170             r = ((color&0x0000FF00) >> 8) ;
1171             a = (color&0x000000FF);
1172 #endif
1173             if ( hasMask )
1174             {
1175                 if ( *maskp++ == 0xFF )
1176                 {
1177                     r = MASK_RED ;
1178                     g = MASK_GREEN ;
1179                     b = MASK_BLUE ;
1180                 }
1181                 else if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1182                     b = MASK_BLUE_REPLACEMENT ;
1183
1184                 maskp++ ;
1185                 maskp++ ;
1186                 maskp++ ;
1187             }
1188             else if ( hasAlpha )
1189                 *alpha++ = a ;
1190
1191             data[index    ] = r ;
1192             data[index + 1] = g ;
1193             data[index + 2] = b ;
1194
1195             index += 3;
1196             source += 4 ;
1197         }
1198     }
1199
1200     if ( hasMask )
1201         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1202
1203     return image;
1204 }
1205
1206 #endif //wxUSE_IMAGE
1207
1208 bool wxBitmap::SaveFile( const wxString& filename,
1209     wxBitmapType type, const wxPalette *palette ) const
1210 {
1211     bool success = false;
1212     wxBitmapHandler *handler = FindHandler(type);
1213
1214     if ( handler )
1215     {
1216         success = handler->SaveFile(this, filename, type, palette);
1217     }
1218     else
1219     {
1220 #if wxUSE_IMAGE
1221         wxImage image = ConvertToImage();
1222         success = image.SaveFile(filename, type);
1223 #else
1224         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1225 #endif
1226     }
1227
1228     return success;
1229 }
1230
1231 bool wxBitmap::IsOk() const
1232 {
1233    return (M_BITMAPDATA && M_BITMAPDATA->Ok());
1234 }
1235
1236 int wxBitmap::GetHeight() const
1237 {
1238    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1239
1240    return M_BITMAPDATA->GetHeight();
1241 }
1242
1243 int wxBitmap::GetWidth() const
1244 {
1245    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1246
1247    return M_BITMAPDATA->GetWidth() ;
1248 }
1249
1250 int wxBitmap::GetDepth() const
1251 {
1252    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1253
1254    return M_BITMAPDATA->GetDepth();
1255 }
1256
1257 #if WXWIN_COMPATIBILITY_2_4
1258 int wxBitmap::GetQuality() const
1259 {
1260     return 0;
1261 }
1262
1263 void wxBitmap::SetQuality(int WXUNUSED(quality))
1264 {
1265 }
1266 #endif
1267
1268 wxMask *wxBitmap::GetMask() const
1269 {
1270    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1271
1272    return M_BITMAPDATA->m_bitmapMask;
1273 }
1274
1275 bool wxBitmap::HasAlpha() const
1276 {
1277    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1278
1279    return M_BITMAPDATA->HasAlpha() ;
1280 }
1281
1282 void wxBitmap::SetWidth(int w)
1283 {
1284     if (!M_BITMAPDATA)
1285         m_refData = new wxBitmapRefData;
1286
1287     M_BITMAPDATA->SetWidth(w);
1288 }
1289
1290 void wxBitmap::SetHeight(int h)
1291 {
1292     if (!M_BITMAPDATA)
1293         m_refData = new wxBitmapRefData;
1294
1295     M_BITMAPDATA->SetHeight(h);
1296 }
1297
1298 void wxBitmap::SetDepth(int d)
1299 {
1300     if (!M_BITMAPDATA)
1301         m_refData = new wxBitmapRefData;
1302
1303     M_BITMAPDATA->SetDepth(d);
1304 }
1305
1306 void wxBitmap::SetOk(bool isOk)
1307 {
1308     if (!M_BITMAPDATA)
1309         m_refData = new wxBitmapRefData;
1310
1311     M_BITMAPDATA->SetOk(isOk);
1312 }
1313
1314 #if wxUSE_PALETTE
1315 wxPalette *wxBitmap::GetPalette() const
1316 {
1317    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1318
1319    return &M_BITMAPDATA->m_bitmapPalette;
1320 }
1321
1322 void wxBitmap::SetPalette(const wxPalette& palette)
1323 {
1324     if (!M_BITMAPDATA)
1325         m_refData = new wxBitmapRefData;
1326
1327     M_BITMAPDATA->m_bitmapPalette = palette ;
1328 }
1329 #endif // wxUSE_PALETTE
1330
1331 void wxBitmap::SetMask(wxMask *mask)
1332 {
1333     if (!M_BITMAPDATA)
1334         m_refData = new wxBitmapRefData;
1335
1336     // Remove existing mask if there is one.
1337     delete M_BITMAPDATA->m_bitmapMask;
1338
1339     M_BITMAPDATA->m_bitmapMask = mask ;
1340 }
1341
1342 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1343 {
1344     return WXHBITMAP(M_BITMAPDATA->GetHBITMAP((GWorldPtr*)mask));
1345 }
1346
1347 // ----------------------------------------------------------------------------
1348 // wxMask
1349 // ----------------------------------------------------------------------------
1350
1351 wxMask::wxMask()
1352 {
1353     Init() ;
1354 }
1355
1356 // Construct a mask from a bitmap and a colour indicating
1357 // the transparent area
1358 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
1359 {
1360     Init() ;
1361     Create( bitmap, colour );
1362 }
1363
1364 // Construct a mask from a mono bitmap (copies the bitmap).
1365 wxMask::wxMask( const wxBitmap& bitmap )
1366 {
1367     Init() ;
1368     Create( bitmap );
1369 }
1370
1371 // Construct a mask from a mono bitmap (copies the bitmap).
1372
1373 wxMask::wxMask( const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1374 {
1375     Init() ;
1376     Create( data, width , height , bytesPerRow );
1377 }
1378
1379 wxMask::~wxMask()
1380 {
1381 #ifndef __LP64__
1382     if ( m_maskBitmap )
1383     {
1384         DisposeGWorld( (GWorldPtr)m_maskBitmap ) ;
1385         m_maskBitmap = NULL ;
1386     }
1387 #endif
1388 }
1389
1390 void wxMask::Init()
1391 {
1392     m_width = m_height = m_bytesPerRow = 0 ;
1393     m_maskBitmap = NULL ;
1394 }
1395
1396 void *wxMask::GetRawAccess() const
1397 {
1398     return m_memBuf.GetData() ;
1399 }
1400
1401 // The default ColorTable for k8IndexedGrayPixelFormat in Intel appears to be broken, so we'll use an non-indexed
1402 // bitmap mask instead; in order to keep the code simple, the change applies to PowerPC implementations as well
1403
1404 void wxMask::RealizeNative()
1405 {
1406 #ifndef __LP64__
1407     if ( m_maskBitmap )
1408     {
1409        DisposeGWorld( (GWorldPtr)m_maskBitmap ) ;
1410        m_maskBitmap = NULL ;
1411     }
1412
1413     Rect rect = { 0 , 0 , m_height , m_width } ;
1414
1415     OSStatus err = NewGWorldFromPtr(
1416         (GWorldPtr*) &m_maskBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
1417         (char*) m_memBuf.GetData() , m_bytesPerRow ) ;
1418     verify_noerr( err ) ;
1419 #endif
1420 }
1421
1422 // Create a mask from a mono bitmap (copies the bitmap).
1423
1424 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1425 {
1426     m_memBuf = data ;
1427     m_width = width ;
1428     m_height = height ;
1429     m_bytesPerRow = bytesPerRow ;
1430
1431     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1432
1433     RealizeNative() ;
1434
1435     return true ;
1436 }
1437
1438 // Create a mask from a mono bitmap (copies the bitmap).
1439 bool wxMask::Create(const wxBitmap& bitmap)
1440 {
1441     m_width = bitmap.GetWidth() ;
1442     m_height = bitmap.GetHeight() ;
1443     m_bytesPerRow = ( m_width * 4 + 3 ) & 0xFFFFFFC ;
1444
1445     size_t size = m_bytesPerRow * m_height ;
1446     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1447     wxASSERT( destdatabase != NULL ) ;
1448
1449     memset( destdatabase , 0 , size ) ;
1450     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1451
1452     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1453     {
1454         unsigned char *destdata = destdatabase ;
1455         unsigned char r, g, b;
1456
1457         for ( int x = 0 ; x < m_width ; ++x )
1458         {
1459             srcdata++ ;
1460             r = *srcdata++ ;
1461             g = *srcdata++ ;
1462             b = *srcdata++ ;
1463
1464             if ( ( r + g + b ) > 0x10 )
1465             {
1466                 *destdata++ = 0xFF ;
1467                 *destdata++ = 0xFF ;
1468                 *destdata++ = 0xFF ;
1469                 *destdata++ = 0xFF ;
1470             }
1471             else
1472             {
1473                 *destdata++ = 0x00 ;
1474                 *destdata++ = 0x00 ;
1475                 *destdata++ = 0x00 ;
1476                 *destdata++ = 0x00 ;
1477             }
1478         }
1479     }
1480
1481     m_memBuf.UngetWriteBuf( size ) ;
1482     RealizeNative() ;
1483
1484     return true;
1485 }
1486
1487 // Create a mask from a bitmap and a colour indicating
1488 // the transparent area
1489 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1490 {
1491     m_width = bitmap.GetWidth() ;
1492     m_height = bitmap.GetHeight() ;
1493     m_bytesPerRow = ( m_width * 4 + 3 ) & 0xFFFFFFC ;
1494
1495     size_t size = m_bytesPerRow * m_height ;
1496     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1497     wxASSERT( destdatabase != NULL ) ;
1498
1499     memset( destdatabase , 0 , size ) ;
1500     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1501
1502     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow)
1503     {
1504         unsigned char *destdata = destdatabase ;
1505         unsigned char r, g, b;
1506
1507         for ( int x = 0 ; x < m_width ; ++x )
1508         {
1509             srcdata++ ;
1510             r = *srcdata++ ;
1511             g = *srcdata++ ;
1512             b = *srcdata++ ;
1513
1514             if ( colour == wxColour( r , g , b ) )
1515             {
1516                 *destdata++ = 0xFF ;
1517                 *destdata++ = 0xFF ;
1518                 *destdata++ = 0xFF ;
1519                 *destdata++ = 0xFF ;
1520             }
1521             else
1522             {
1523                 *destdata++ = 0x00 ;
1524                 *destdata++ = 0x00 ;
1525                 *destdata++ = 0x00 ;
1526                 *destdata++ = 0x00 ;
1527             }
1528         }
1529     }
1530
1531     m_memBuf.UngetWriteBuf( size ) ;
1532     RealizeNative() ;
1533
1534     return true;
1535 }
1536
1537 WXHBITMAP wxMask::GetHBITMAP() const
1538 {
1539     return m_maskBitmap ;
1540 }
1541
1542 // ----------------------------------------------------------------------------
1543 // wxBitmapHandler
1544 // ----------------------------------------------------------------------------
1545
1546 IMPLEMENT_ABSTRACT_CLASS(wxBitmapHandler, wxBitmapHandlerBase)
1547
1548 // ----------------------------------------------------------------------------
1549 // Standard Handlers
1550 // ----------------------------------------------------------------------------
1551
1552 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1553 {
1554     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1555
1556 public:
1557     inline wxPICTResourceHandler()
1558     {
1559         SetName(wxT("Macintosh Pict resource"));
1560         SetExtension(wxEmptyString);
1561         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1562     };
1563
1564     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1565           int desiredWidth, int desiredHeight);
1566 };
1567
1568 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1569
1570
1571 bool wxPICTResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1572           int desiredWidth, int desiredHeight)
1573 {
1574 #if wxUSE_METAFILE
1575     Str255 theName ;
1576     wxMacStringToPascal( name , theName ) ;
1577
1578     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1579     if ( thePict )
1580     {
1581         wxMetafile mf ;
1582
1583         mf.SetHMETAFILE( (WXHMETAFILE) thePict ) ;
1584         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1585         wxMemoryDC dc ;
1586         dc.SelectObject( *bitmap ) ;
1587         mf.Play( &dc ) ;
1588         dc.SelectObject( wxNullBitmap ) ;
1589
1590         return true ;
1591     }
1592 #endif
1593
1594     return false ;
1595 }
1596
1597 void wxBitmap::InitStandardHandlers()
1598 {
1599     AddHandler( new wxPICTResourceHandler ) ;
1600     AddHandler( new wxICONResourceHandler ) ;
1601 }
1602
1603 // ----------------------------------------------------------------------------
1604 // raw bitmap access support
1605 // ----------------------------------------------------------------------------
1606
1607 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1608 {
1609     if ( !Ok() )
1610         // no bitmap, no data (raw or otherwise)
1611         return NULL;
1612
1613     data.m_width = GetWidth() ;
1614     data.m_height = GetHeight() ;
1615     data.m_stride = GetWidth() * 4 ;
1616
1617     return BeginRawAccess() ;
1618 }
1619
1620 void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
1621 {
1622     EndRawAccess() ;
1623 }
1624
1625 void wxBitmap::UseAlpha()
1626 {
1627     // remember that we are using alpha channel:
1628     // we'll need to create a proper mask in UngetRawData()
1629     M_BITMAPDATA->UseAlpha( true );
1630 }