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 #include "wx/wxprec.h"
  13
  14 #include "wx/bitmap.h"
  15 #include "wx/icon.h"
  16 #include "wx/log.h"
  17 #include "wx/image.h"
  18 #include "wx/metafile.h"
  19 #include "wx/xpmdecod.h"
  20
  21 #include "wx/rawbmp.h"
  22
  23 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
  24 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
  25 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject )
  26
  27 #ifdef __DARWIN__
  28     #include <ApplicationServices/ApplicationServices.h>
  29 #else
  30     #include <PictUtils.h>
  31 #endif
  32
  33 #include "wx/mac/uma.h"
  34
  35 #include "wx/dcmemory.h"
  36
  37 // Implementation Notes
  38 // --------------------
  39 //
  40 // we are always working with a 32 bit deep pixel buffer
  41 // under QuickDraw its alpha parts are going to be ignored in the GWorld,
  42 // therefore we have a separate GWorld there for blitting the mask in
  43
  44 // under Quartz then content is transformed into a CGImageRef representing the same data
  45 // which can be transferred to the GPU by the OS for fast rendering
  46
  47 // we don't dare premultiplied alpha yet
  48 #define wxMAC_USE_PREMULTIPLIED_ALPHA 0
  49
  50 #if wxUSE_BMPBUTTON
  51
  52 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
  53 {
  54     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
  55     if ( bitmap.Ok() )
  56     {
  57         wxBitmapRefData * bmap = bitmap.GetBitmapData() ;
  58         if ( bmap == NULL )
  59             return ;
  60
  61         if ( ( bmap->HasNativeSize() && forceType == 0 ) || forceType == kControlContentIconRef )
  62         {
  63             wxBitmap scaleBmp ;
  64
  65             wxBitmapRefData* bmp = bmap ;
  66
  67             if ( !bmap->HasNativeSize() )
  68             {
  69                 // as PICT conversion will only result in a 16x16 icon, let's attempt
  70                 // a few scales for better results
  71
  72                 int w = bitmap.GetWidth() ;
  73                 int h = bitmap.GetHeight() ;
  74                 int sz = wxMax( w , h ) ;
  75                 if ( sz == 24 || sz == 64)
  76                 {
  77                     scaleBmp = wxBitmap( bitmap.ConvertToImage().Scale( w * 2 , h * 2 ) ) ;
  78                     bmp = scaleBmp.GetBitmapData() ;
  79                 }
  80             }
  81
  82             info->contentType = kControlContentIconRef ;
  83             info->u.iconRef = bmp->GetIconRef() ;
  84             AcquireIconRef( info->u.iconRef ) ;
  85         }
  86 #if wxMAC_USE_CORE_GRAPHICS && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
  87         else if ( forceType == kControlContentCGImageRef )
  88         {
  89             info->contentType = kControlContentCGImageRef ;
  90             info->u.imageRef = (CGImageRef) bmap->CGImageCreate() ;
  91         }
  92 #endif
  93         else
  94         {
  95             info->contentType = kControlContentPictHandle ;
  96             info->u.picture = bmap->GetPictHandle() ;
  97         }
  98     }
  99 }
 100
 101 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
 102 {
 103     if ( info->contentType == kControlContentIconRef )
 104     {
 105         ReleaseIconRef( info->u.iconRef ) ;
 106     }
 107     else if ( info->contentType == kControlNoContent )
 108     {
 109         // there's no bitmap at all, fall through silently
 110     }
 111     else if ( info->contentType == kControlContentPictHandle )
 112     {
 113         // owned by the bitmap, no release here
 114     }
 115 #if wxMAC_USE_CORE_GRAPHICS && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
 116     else if ( info->contentType == kControlContentCGImageRef )
 117     {
 118         CGImageRelease( info->u.imageRef ) ;
 119     }
 120 #endif
 121     else
 122     {
 123         wxFAIL_MSG(wxT("Unexpected bitmap type") ) ;
 124     }
 125 }
 126
 127 #endif //wxUSE_BMPBUTTON
 128
 129 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
 130
 131 void wxBitmapRefData::Init()
 132 {
 133     m_width = 0 ;
 134     m_height = 0 ;
 135     m_depth = 0 ;
 136     m_ok = false ;
 137     m_bitmapMask = NULL ;
 138 #if wxMAC_USE_CORE_GRAPHICS
 139     m_cgImageRef = NULL ;
 140 #endif
 141     m_iconRef = NULL ;
 142     m_pictHandle = NULL ;
 143     m_hBitmap = NULL ;
 144     m_hMaskBitmap = NULL;
 145     m_maskBytesPerRow = 0 ;
 146
 147     m_rawAccessCount = 0 ;
 148     m_hasAlpha = false;
 149 }
 150
 151 wxBitmapRefData::wxBitmapRefData()
 152 {
 153     Init() ;
 154 }
 155
 156 wxBitmapRefData::wxBitmapRefData( int w , int h , int d )
 157 {
 158     Init() ;
 159     Create( w , h , d ) ;
 160 }
 161
 162 bool wxBitmapRefData::Create( int w , int h , int d )
 163 {
 164     m_width = w ;
 165     m_height = h ;
 166     m_depth = d ;
 167
 168     m_bytesPerRow = w * 4 ;
 169     size_t size = m_bytesPerRow * h ;
 170     void*  data = m_memBuf.GetWriteBuf(size) ;
 171     memset( data ,  0 , size) ;
 172     m_memBuf.UngetWriteBuf(size) ;
 173
 174     m_hBitmap = NULL ;
 175     Rect rect = { 0 , 0 , m_height , m_width } ;
 176     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 177         (char*) data , m_bytesPerRow ) ) ;
 178     wxASSERT_MSG( m_hBitmap , wxT("Unable to create GWorld context") ) ;
 179     m_ok = ( m_hBitmap != NULL ) ;
 180
 181     return m_ok ;
 182 }
 183
 184 void wxBitmapRefData::UseAlpha( bool use )
 185 {
 186     if ( m_hasAlpha == use )
 187         return ;
 188
 189     m_hasAlpha = use ;
 190     if ( m_hasAlpha )
 191     {
 192         int width = GetWidth() ;
 193         int height = GetHeight() ;
 194         m_maskBytesPerRow = ( width * 4 + 3 ) & 0xFFFFFFC ;
 195         size_t size = height * m_maskBytesPerRow ;
 196         unsigned char * data = (unsigned char * ) m_maskMemBuf.GetWriteBuf( size ) ;
 197         memset( data , 0 , size ) ;
 198         wxASSERT( m_hMaskBitmap == NULL ) ;
 199         Rect rect = { 0 , 0 , height , width } ;
 200         verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hMaskBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 201             (char*) data , m_maskBytesPerRow ) ) ;
 202         wxASSERT_MSG( m_hMaskBitmap , wxT("Unable to create GWorld context for alpha mask") ) ;
 203         m_maskMemBuf.UngetWriteBuf(size) ;
 204 #if !wxMAC_USE_CORE_GRAPHICS
 205         UpdateAlphaMask() ;
 206 #endif
 207     }
 208     else
 209     {
 210         DisposeGWorld( m_hMaskBitmap ) ;
 211         m_hMaskBitmap = NULL ;
 212         m_maskBytesPerRow = 0 ;
 213     }
 214 }
 215
 216 void *wxBitmapRefData::GetRawAccess() const
 217 {
 218     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 219     return m_memBuf.GetData() ;
 220 }
 221
 222 void *wxBitmapRefData::BeginRawAccess()
 223 {
 224     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") ) ;
 225     wxASSERT( m_rawAccessCount == 0 ) ;
 226     ++m_rawAccessCount ;
 227     // we must destroy an existing cached image, as
 228     // the bitmap data may change now
 229     wxASSERT_MSG( m_pictHandle == NULL && m_iconRef == NULL ,
 230         wxT("Currently, modifing bitmaps that are used in controls already is not supported") ) ;
 231 #if wxMAC_USE_CORE_GRAPHICS
 232     if ( m_cgImageRef )
 233     {
 234         CGImageRelease( m_cgImageRef ) ;
 235         m_cgImageRef = NULL ;
 236     }
 237 #endif
 238     return m_memBuf.GetData() ;
 239 }
 240
 241 void wxBitmapRefData::EndRawAccess()
 242 {
 243     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 244     wxASSERT( m_rawAccessCount == 1 ) ;
 245     --m_rawAccessCount ;
 246 #if !wxMAC_USE_CORE_GRAPHICS
 247     UpdateAlphaMask() ;
 248 #endif
 249 }
 250
 251 bool wxBitmapRefData::HasNativeSize()
 252 {
 253     int w = GetWidth() ;
 254     int h = GetHeight() ;
 255     int sz = wxMax( w , h ) ;
 256
 257     if ( sz == 128 || sz == 48 || sz == 32 || sz == 16 )
 258         return true ;
 259     return false ;
 260 }
 261
 262 IconRef wxBitmapRefData::GetIconRef()
 263 {
 264     if ( m_iconRef == NULL )
 265     {
 266         // Create Icon Family Handle
 267
 268         IconFamilyHandle iconFamily = NULL ;
 269
 270 #ifdef WORDS_BIGENDIAN
 271         iconFamily = (IconFamilyHandle) NewHandle(8) ;
 272         (**iconFamily).resourceType = kIconFamilyType ;
 273         (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
 274 #else
 275         // test this solution on big endian as well
 276         iconFamily = (IconFamilyHandle) NewHandle(0) ;
 277 #endif
 278
 279         int w = GetWidth() ;
 280         int h = GetHeight() ;
 281         int sz = wxMax( w , h ) ;
 282
 283         OSType dataType = 0 ;
 284         OSType maskType = 0 ;
 285
 286         if ( sz == 128 )
 287         {
 288             dataType = kThumbnail32BitData ;
 289             maskType = kThumbnail8BitMask ;
 290         }
 291         else if ( sz == 48 )
 292         {
 293             dataType = kHuge32BitData ;
 294             maskType = kHuge8BitMask ;
 295         }
 296         else if ( sz == 32 )
 297         {
 298             dataType = kLarge32BitData ;
 299             maskType = kLarge8BitMask ;
 300         }
 301         else if ( sz == 16 )
 302         {
 303             dataType = kSmall32BitData ;
 304             maskType = kSmall8BitMask ;
 305         }
 306
 307         if ( dataType != 0 )
 308         {
 309             // setup the header properly
 310
 311             Handle data = NULL ;
 312             Handle maskdata = NULL ;
 313             unsigned char * maskptr = NULL ;
 314             unsigned char * ptr = NULL ;
 315             size_t size ;
 316             size_t masksize ;
 317
 318             size = sz * sz * 4 ;
 319             data = NewHandle( size) ;
 320             HLock( data ) ;
 321             ptr = (unsigned char*) *data ;
 322             memset( ptr , 0, size ) ;
 323
 324             masksize = sz * sz ;
 325             maskdata = NewHandle( masksize ) ;
 326             HLock( maskdata ) ;
 327             maskptr = (unsigned char*) *maskdata ;
 328             memset( maskptr , 0 , masksize ) ;
 329
 330             bool hasAlpha = HasAlpha() ;
 331             wxMask *mask = m_bitmapMask ;
 332             unsigned char * source = (unsigned char*) GetRawAccess() ;
 333             unsigned char * masksource = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 334             for ( int y = 0 ; y < h ; ++y )
 335             {
 336                 unsigned char * dest = ptr + y * sz * 4 ;
 337                 unsigned char * maskdest = maskptr + y * sz ;
 338                 for ( int x = 0 ; x < w ; ++x )
 339                 {
 340                     unsigned char a = *source ++ ;
 341                     unsigned char r = *source ++ ;
 342                     unsigned char g = *source ++ ;
 343                     unsigned char b = *source ++ ;
 344
 345                     *dest++ = 0 ;
 346                     *dest++ = r ;
 347                     *dest++ = g ;
 348                     *dest++ = b ;
 349
 350                     if ( mask )
 351                         *maskdest++ = *masksource++ ;
 352                     else if ( hasAlpha )
 353                         *maskdest++ = a ;
 354                     else
 355                         *maskdest++ = 0xFF ;
 356                 }
 357             }
 358
 359             OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 360             wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 361
 362             err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 363             wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 364             HUnlock( data ) ;
 365             HUnlock( maskdata ) ;
 366             DisposeHandle( data ) ;
 367             DisposeHandle( maskdata ) ;
 368         }
 369         else
 370         {
 371             PicHandle pic = GetPictHandle() ;
 372             SetIconFamilyData( iconFamily, 'PICT' , (Handle) pic ) ;
 373         }
 374
 375         // transform into IconRef
 376
 377         static int iconCounter = 2 ;
 378 #ifdef __WXDEBUG__
 379         OSStatus err =
 380 #endif
 381             RegisterIconRefFromIconFamily( 'WXNG' , (OSType) iconCounter, iconFamily, &m_iconRef ) ;
 382         wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 383         // we have to retain a reference, as Unregister will decrement it
 384         AcquireIconRef( m_iconRef ) ;
 385         UnregisterIconRef( 'WXNG' , (OSType) iconCounter ) ;
 386         DisposeHandle( (Handle) iconFamily ) ;
 387         ++iconCounter ;
 388     }
 389     return m_iconRef ;
 390 }
 391
 392 PicHandle wxBitmapRefData::GetPictHandle()
 393 {
 394     if ( m_pictHandle == NULL )
 395     {
 396         CGrafPtr        origPort = NULL ;
 397         GDHandle        origDev = NULL ;
 398         GWorldPtr       wp = NULL ;
 399         GWorldPtr       mask = NULL ;
 400         int height = GetHeight() ;
 401         int width = GetWidth() ;
 402
 403         Rect rect = { 0 , 0 , height , width } ;
 404
 405         GetGWorld( &origPort , &origDev ) ;
 406
 407         wp = GetHBITMAP( &mask ) ;
 408
 409         RgnHandle clipRgn = NULL ;
 410
 411         if ( mask )
 412         {
 413             GWorldPtr monoworld ;
 414             clipRgn = NewRgn() ;
 415             OSStatus err = NewGWorld( &monoworld , 1 , &rect , NULL , NULL , 0 ) ;
 416             verify_noerr(err) ;
 417             LockPixels( GetGWorldPixMap( monoworld ) ) ;
 418             LockPixels( GetGWorldPixMap( mask ) ) ;
 419             SetGWorld( monoworld , NULL ) ;
 420             RGBColor       white = { 0xffff ,0xffff , 0xffff } ;
 421             RGBColor       black = { 0x0000 ,0x0000 , 0x0000 } ;
 422             RGBForeColor( &black ) ;
 423             RGBBackColor( &white ) ;
 424             CopyBits(GetPortBitMapForCopyBits(mask),
 425                     GetPortBitMapForCopyBits(monoworld),
 426                     &rect,
 427                     &rect,
 428                     srcCopy,NULL);
 429             BitMapToRegion( clipRgn , (BitMap*) *GetGWorldPixMap( monoworld ) ) ;
 430             UnlockPixels( GetGWorldPixMap( monoworld ) ) ;
 431             UnlockPixels( GetGWorldPixMap( mask ) ) ;
 432             DisposeGWorld( monoworld ) ;
 433         }
 434
 435         SetGWorld( wp , NULL ) ;
 436         Rect portRect ;
 437         GetPortBounds( wp , &portRect ) ;
 438         m_pictHandle = OpenPicture(&portRect);
 439
 440         if(m_pictHandle)
 441         {
 442             RGBColor       white = { 0xffff ,0xffff , 0xffff } ;
 443             RGBColor       black = { 0x0000 ,0x0000 , 0x0000 } ;
 444             RGBForeColor( &black ) ;
 445             RGBBackColor( &white ) ;
 446
 447             if ( clipRgn )
 448                 SetClip( clipRgn ) ;
 449
 450             LockPixels( GetGWorldPixMap( wp ) ) ;
 451             CopyBits(GetPortBitMapForCopyBits(wp),
 452                     GetPortBitMapForCopyBits(wp),
 453                     &portRect,
 454                     &portRect,
 455                     srcCopy,clipRgn);
 456             UnlockPixels( GetGWorldPixMap( wp ) ) ;
 457             ClosePicture();
 458         }
 459         SetGWorld( origPort , origDev ) ;
 460         if ( clipRgn )
 461             DisposeRgn( clipRgn ) ;
 462     }
 463     return m_pictHandle ;
 464 }
 465
 466 #ifdef __WXMAC_OSX__
 467 void wxMacMemoryBufferReleaseProc(void *info, const void *data, size_t size)
 468 {
 469     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
 470     wxASSERT( data == membuf->GetData() ) ;
 471     delete membuf ;
 472 }
 473
 474 CGImageRef wxBitmapRefData::CGImageCreate() const
 475 {
 476     wxASSERT( m_ok ) ;
 477     wxASSERT( m_rawAccessCount >= 0 ) ;
 478     CGImageRef image ;
 479     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 480     {
 481         size_t imageSize = m_width * m_height * 4 ;
 482         void * dataBuffer = m_memBuf.GetData() ;
 483         int w = m_width ;
 484         int h = m_height ;
 485         CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 486         wxMemoryBuffer* membuf = NULL ;
 487
 488         if ( m_bitmapMask )
 489         {
 490             membuf = new wxMemoryBuffer( imageSize ) ;
 491             memcpy( membuf->GetData() , dataBuffer , imageSize ) ;
 492             unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 493             int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 494             unsigned char *destalpha = (unsigned char *) membuf->GetData() ;
 495             alphaInfo = kCGImageAlphaFirst ;
 496             for ( int y = 0 ; y < h ; ++y , sourcemaskstart += maskrowbytes)
 497             {
 498                 unsigned char *sourcemask = sourcemaskstart ;
 499                 for( int x = 0 ; x < w ; ++x , sourcemask++ , destalpha += 4 )
 500                 {
 501                     *destalpha = *sourcemask ;
 502                 }
 503             }
 504         }
 505         else if ( m_hasAlpha )
 506         {
 507 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 508             alphaInfo = kCGImageAlphaPremultipliedFirst ;
 509 #else
 510             alphaInfo = kCGImageAlphaFirst ;
 511 #endif
 512             membuf = new wxMemoryBuffer( m_memBuf ) ;
 513         }
 514         else
 515         {
 516             membuf = new wxMemoryBuffer( m_memBuf ) ;
 517         }
 518         CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 519         CGDataProviderRef dataProvider =
 520             CGDataProviderCreateWithData( membuf , (const void *)membuf->GetData() , imageSize,
 521                 wxMacMemoryBufferReleaseProc );
 522         image =
 523             ::CGImageCreate( w, h, 8 , 32 , 4 * m_width , colorSpace, alphaInfo ,
 524                 dataProvider, NULL , false , kCGRenderingIntentDefault );
 525         CGDataProviderRelease( dataProvider);
 526     }
 527     else
 528     {
 529         image = m_cgImageRef ;
 530         CGImageRetain( image ) ;
 531     }
 532     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 533     {
 534         // we keep it for later use
 535         m_cgImageRef = image ;
 536         CGImageRetain( image ) ;
 537     }
 538     return image ;
 539 }
 540 #endif
 541
 542 GWorldPtr wxBitmapRefData::GetHBITMAP(GWorldPtr* mask) const
 543 {
 544     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 545     if ( mask )
 546     {
 547         *mask = NULL ;
 548         if ( m_bitmapMask )
 549             *mask = (GWorldPtr) m_bitmapMask->GetHBITMAP() ;
 550         else if ( m_hasAlpha )
 551         {
 552 #if !wxMAC_USE_CORE_GRAPHICS
 553             if ( m_rawAccessCount > 0 )
 554                 UpdateAlphaMask() ;
 555 #else
 556             // this structure is not kept in synch when using CG, so if someone
 557             // is really accessing the Graphports, we have to sync it
 558             UpdateAlphaMask() ;
 559 #endif
 560             *mask = m_hMaskBitmap ;
 561         }
 562     }
 563     return m_hBitmap ;
 564 }
 565
 566 void wxBitmapRefData::UpdateAlphaMask() const
 567 {
 568     if ( m_hasAlpha )
 569     {
 570         unsigned char *sourcemask = (unsigned char *) GetRawAccess() ;
 571         unsigned char *destalphabase = (unsigned char *) m_maskMemBuf.GetData() ;
 572
 573         int h = GetHeight() ;
 574         int w = GetWidth() ;
 575
 576         for ( int y = 0 ; y < h ; ++y , destalphabase += m_maskBytesPerRow )
 577         {
 578             unsigned char* destalpha = destalphabase ;
 579             for( int x = 0 ; x < w ; ++x , sourcemask += 4 )
 580             {
 581                 // we must have 24 bit depth for non quartz smooth alpha
 582                 *destalpha++ = 255 ;
 583                 *destalpha++ = 255  - *sourcemask ;
 584                 *destalpha++ = 255  - *sourcemask ;
 585                 *destalpha++ = 255  - *sourcemask ;
 586             }
 587         }
 588     }
 589 }
 590
 591 void wxBitmapRefData::Free()
 592 {
 593     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 594
 595 #if wxMAC_USE_CORE_GRAPHICS
 596     if ( m_cgImageRef )
 597     {
 598         CGImageRelease( m_cgImageRef ) ;
 599         m_cgImageRef = NULL ;
 600     }
 601 #endif
 602     if ( m_iconRef )
 603     {
 604         ReleaseIconRef( m_iconRef ) ;
 605         m_iconRef = NULL ;
 606     }
 607     if ( m_pictHandle )
 608     {
 609         KillPicture( m_pictHandle ) ;
 610         m_pictHandle = NULL ;
 611     }
 612     if ( m_hBitmap )
 613     {
 614         DisposeGWorld( MAC_WXHBITMAP(m_hBitmap) ) ;
 615         m_hBitmap = NULL ;
 616     }
 617     if ( m_hMaskBitmap )
 618     {
 619         DisposeGWorld( MAC_WXHBITMAP(m_hMaskBitmap) ) ;
 620         m_hMaskBitmap = NULL ;
 621     }
 622
 623     if (m_bitmapMask)
 624     {
 625         delete m_bitmapMask;
 626         m_bitmapMask = NULL;
 627     }
 628 }
 629
 630 wxBitmapRefData::~wxBitmapRefData()
 631 {
 632     Free() ;
 633 }
 634
 635 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 636 {
 637     int w = icon.GetWidth() ;
 638     int h = icon.GetHeight() ;
 639
 640
 641     Create( icon.GetWidth() , icon.GetHeight() ) ;
 642
 643     bool created = false ;
 644
 645     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 646     {
 647         IconFamilyHandle iconFamily = NULL ;
 648         Handle imagehandle = NewHandle(0) ;
 649         Handle maskhandle = NewHandle(0) ;
 650
 651         OSType maskType = 0;
 652         OSType dataType = 0;
 653         IconSelectorValue selector = 0 ;
 654         if ( w == 128 )
 655         {
 656             dataType = kThumbnail32BitData ;
 657             maskType = kThumbnail8BitMask ;
 658             selector = kSelectorAllAvailableData ;
 659         }
 660         else if ( w == 48 )
 661         {
 662             dataType = kHuge32BitData ;
 663             maskType = kHuge8BitMask ;
 664             selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 665         }
 666         else if ( w == 32 )
 667         {
 668             dataType = kLarge32BitData ;
 669             maskType = kLarge8BitMask ;
 670             selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 671         }
 672         else if ( w == 16 )
 673         {
 674             dataType = kSmall32BitData ;
 675             maskType = kSmall8BitMask ;
 676             selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 677         }
 678
 679
 680         OSStatus err = ( IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ) ;
 681
 682         err =( GetIconFamilyData( iconFamily , dataType , imagehandle ) ) ;
 683         err =( GetIconFamilyData( iconFamily , maskType , maskhandle ) ) ;
 684         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 685         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 686
 687         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 688         {
 689             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 690             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 691             UseAlpha() ;
 692             unsigned char *source = (unsigned char *) *imagehandle ;
 693             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 694
 695             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 696             for ( int y = 0 ; y < h ; ++y )
 697             {
 698                 for ( int x = 0 ; x < w ; ++x )
 699                 {
 700                     *destination++ = *sourcemask++ ;
 701                     source++ ;
 702                     *destination++ = *source++ ;
 703                     *destination++ = *source++ ;
 704                     *destination++ = *source++ ;
 705                 }
 706             }
 707             EndRawAccess() ;
 708             DisposeHandle( imagehandle ) ;
 709             DisposeHandle( maskhandle ) ;
 710             created = true ;
 711         }
 712         DisposeHandle( (Handle) iconFamily ) ;
 713
 714     }
 715
 716     if ( !created )
 717     {
 718         wxMemoryDC dc ;
 719         dc.SelectObject( *this ) ;
 720         dc.DrawIcon( icon , 0 , 0 ) ;
 721         dc.SelectObject( wxNullBitmap ) ;
 722     }
 723     return true;
 724 }
 725
 726 wxBitmap::wxBitmap()
 727 {
 728 }
 729
 730 wxBitmap::~wxBitmap()
 731 {
 732 }
 733
 734 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 735 {
 736     m_refData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 737
 738     if ( no_bits == 1 )
 739     {
 740         int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 741         if ( the_width % (sizeof(unsigned char) * 8) ) {
 742             linesize += sizeof(unsigned char);
 743         }
 744         unsigned char* linestart = (unsigned char*) bits ;
 745         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 746         for ( int y = 0 ; y < the_height ; ++y , linestart += linesize )
 747         {
 748             for ( int x = 0 ; x < the_width ; ++x )
 749             {
 750                 int index = x / 8 ;
 751                 int bit = x % 8 ;
 752                 int mask = 1 << bit ;
 753                 if ( linestart[index] & mask )
 754                 {
 755                     *destination++ = 0xFF ;
 756                     *destination++ = 0 ;
 757                     *destination++ = 0 ;
 758                     *destination++ = 0 ;
 759                 }
 760                 else
 761                 {
 762                     *destination++ = 0xFF ;
 763                     *destination++ = 0xFF ;
 764                     *destination++ = 0xFF ;
 765                     *destination++ = 0xFF ;
 766                 }
 767             }
 768         }
 769         EndRawAccess() ;
 770     }
 771     else
 772     {
 773         wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 774     }
 775 }
 776
 777 wxBitmap::wxBitmap(int w, int h, int d)
 778 {
 779     (void)Create(w, h, d);
 780 }
 781
 782 wxBitmap::wxBitmap(void *data, wxBitmapType type, int width, int height, int depth)
 783 {
 784     (void) Create(data, type, width, height, depth);
 785 }
 786
 787 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 788 {
 789     LoadFile(filename, type);
 790 }
 791
 792 wxBitmap::wxBitmap(const char **bits)
 793 {
 794     (void) CreateFromXpm(bits);
 795 }
 796
 797 wxBitmap::wxBitmap(char **bits)
 798 {
 799     (void) CreateFromXpm((const char **)bits);
 800 }
 801
 802 void* wxBitmap::GetRawAccess() const
 803 {
 804     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 805     return M_BITMAPDATA->GetRawAccess() ;
 806 }
 807
 808 void* wxBitmap::BeginRawAccess()
 809 {
 810     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 811     return M_BITMAPDATA->BeginRawAccess() ;
 812 }
 813
 814 void wxBitmap::EndRawAccess()
 815 {
 816     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 817     M_BITMAPDATA->EndRawAccess() ;
 818 }
 819
 820 bool wxBitmap::CreateFromXpm(const char **bits)
 821 {
 822 #if wxUSE_IMAGE
 823     wxCHECK_MSG( bits != NULL, false, wxT("invalid bitmap data") )
 824     wxXPMDecoder decoder;
 825     wxImage img = decoder.ReadData(bits);
 826     wxCHECK_MSG( img.Ok(), false, wxT("invalid bitmap data") )
 827     *this = wxBitmap(img);
 828     return true;
 829 #else
 830     return false;
 831 #endif
 832 }
 833
 834 #ifdef __WXMAC_OSX__
 835 WXCGIMAGEREF wxBitmap::CGImageCreate() const
 836 {
 837     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 838     return M_BITMAPDATA->CGImageCreate() ;
 839 }
 840 #endif
 841
 842 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
 843 {
 844     wxCHECK_MSG( Ok() &&
 845                 (rect.x >= 0) && (rect.y >= 0) &&
 846                 (rect.x+rect.width <= GetWidth()) &&
 847                 (rect.y+rect.height <= GetHeight()),
 848                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 849
 850
 851     wxBitmap ret( rect.width, rect.height, GetDepth() );
 852     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 853
 854
 855     int sourcewidth = GetWidth() ;
 856     int destwidth = rect.width ;
 857     int destheight = rect.height ;
 858     {
 859         unsigned char * sourcedata = (unsigned char*) GetRawAccess() ;
 860         unsigned char * destdata = (unsigned char*) ret.BeginRawAccess() ;
 861         int sourcelinesize = sourcewidth * 4 ;
 862         int destlinesize = destwidth * 4 ;
 863         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
 864         unsigned char *dest = destdata ;
 865         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 866         {
 867             memcpy( dest , source , destlinesize ) ;
 868         }
 869     }
 870     ret.EndRawAccess() ;
 871
 872     if ( M_BITMAPDATA->m_bitmapMask )
 873     {
 874         wxMemoryBuffer maskbuf ;
 875         int rowBytes = ( destwidth + 3 ) & 0xFFFFFFC ;
 876         size_t maskbufsize = rowBytes * destheight ;
 877         unsigned char * destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
 878
 879         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow()  ;
 880         int destlinesize = rowBytes ;
 881         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
 882         source += rect.x + rect.y * sourcelinesize ;
 883         unsigned char *dest = destdata ;
 884
 885         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 886         {
 887             memcpy( dest , source , destlinesize ) ;
 888         }
 889         maskbuf.UngetWriteBuf( maskbufsize ) ;
 890         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
 891     }
 892     else if ( HasAlpha() )
 893         ret.UseAlpha() ;
 894
 895     return ret;
 896 }
 897
 898 bool wxBitmap::Create(int w, int h, int d)
 899 {
 900     UnRef();
 901
 902     if ( d < 0 )
 903         d = wxDisplayDepth() ;
 904
 905     m_refData = new wxBitmapRefData( w , h , d );
 906
 907     return M_BITMAPDATA->Ok() ;
 908 }
 909
 910 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
 911 {
 912     UnRef();
 913
 914     wxBitmapHandler *handler = FindHandler(type);
 915
 916     if ( handler )
 917     {
 918         m_refData = new wxBitmapRefData;
 919
 920         return handler->LoadFile(this, filename, type, -1, -1);
 921     }
 922     else
 923     {
 924 #if wxUSE_IMAGE
 925         wxImage loadimage(filename, type);
 926         if (loadimage.Ok()) {
 927             *this = loadimage;
 928             return true;
 929         }
 930 #endif
 931     }
 932     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 933     return false;
 934 }
 935
 936 bool wxBitmap::Create(void *data, wxBitmapType type, int width, int height, int depth)
 937 {
 938     UnRef();
 939
 940     m_refData = new wxBitmapRefData;
 941
 942     wxBitmapHandler *handler = FindHandler(type);
 943
 944     if ( handler == NULL ) {
 945         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 946
 947         return false;
 948     }
 949
 950     return handler->Create(this, data, type, width, height, depth);
 951 }
 952
 953 #if wxUSE_IMAGE
 954
 955 wxBitmap::wxBitmap(const wxImage& image, int depth)
 956 {
 957     wxCHECK_RET( image.Ok(), wxT("invalid image") )
 958
 959     // width and height of the device-dependent bitmap
 960     int width = image.GetWidth();
 961     int height = image.GetHeight();
 962
 963     m_refData = new wxBitmapRefData( width , height , depth ) ;
 964
 965     // Create picture
 966
 967     bool hasAlpha = false ;
 968
 969     if ( image.HasMask() )
 970     {
 971         // takes precedence, don't mix with alpha info
 972     }
 973     else
 974     {
 975         hasAlpha = image.HasAlpha() ;
 976     }
 977
 978     if ( hasAlpha )
 979         UseAlpha() ;
 980
 981     unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 982
 983     register unsigned char* data = image.GetData();
 984     const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
 985     for (int y = 0; y < height; y++)
 986     {
 987         for (int x = 0; x < width; x++)
 988         {
 989             if ( hasAlpha )
 990             {
 991                 const unsigned char a = *alpha++;
 992                 *destination++ = a ;
 993 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 994                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 995                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 996                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 997 #else
 998                 *destination++ = *data++ ;
 999                 *destination++ = *data++ ;
1000                 *destination++ = *data++ ;
1001 #endif
1002             }
1003             else
1004             {
1005                 *destination++ = 0xFF ;
1006                 *destination++ = *data++ ;
1007                 *destination++ = *data++ ;
1008                 *destination++ = *data++ ;
1009             }
1010         }
1011     }
1012     EndRawAccess() ;
1013     if ( image.HasMask() )
1014     {
1015         SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
1016     }
1017 }
1018
1019 wxImage wxBitmap::ConvertToImage() const
1020 {
1021     wxImage image;
1022
1023     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
1024
1025     // create an wxImage object
1026     int width = GetWidth();
1027     int height = GetHeight();
1028     image.Create( width, height );
1029
1030     unsigned char *data = image.GetData();
1031     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
1032
1033     unsigned char* source = (unsigned char*) GetRawAccess() ;
1034
1035     bool hasAlpha = false ;
1036     bool hasMask = false ;
1037     int maskBytesPerRow = 0 ;
1038     unsigned char *alpha = NULL ;
1039     unsigned char *mask = NULL ;
1040     if ( HasAlpha() )
1041     {
1042         hasAlpha = true ;
1043     }
1044
1045     if ( GetMask() )
1046     {
1047         hasMask = true ;
1048         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1049         maskBytesPerRow = GetMask()->GetBytesPerRow() ;
1050     }
1051
1052     if ( hasAlpha )
1053     {
1054         image.SetAlpha() ;
1055         alpha = image.GetAlpha() ;
1056     }
1057     int index = 0;
1058
1059     // The following masking algorithm is the same as well in msw/gtk:
1060     // the colour used as transparent one in wxImage and the one it is
1061     // replaced with when it really occurs in the bitmap
1062     static const int MASK_RED = 1;
1063     static const int MASK_GREEN = 2;
1064     static const int MASK_BLUE = 3;
1065     static const int MASK_BLUE_REPLACEMENT = 2;
1066
1067     for (int yy = 0; yy < height; yy++ , mask += maskBytesPerRow )
1068     {
1069         unsigned char * maskp = mask ;
1070         for (int xx = 0; xx < width; xx++)
1071         {
1072             long color = *((long*) source) ;
1073             unsigned char a = ((color&0xFF000000) >> 24) ;
1074             unsigned char r = ((color&0x00FF0000) >> 16) ;
1075             unsigned char g = ((color&0x0000FF00) >> 8) ;
1076             unsigned char b = (color&0x000000FF);
1077             if ( hasMask )
1078             {
1079                 if ( *maskp++ == 0 )
1080                 {
1081                     r = MASK_RED ;
1082                     g = MASK_GREEN ;
1083                     b = MASK_BLUE ;
1084                 }
1085                 else if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1086                     b = MASK_BLUE_REPLACEMENT ;
1087             }
1088             else if ( hasAlpha )
1089                 *alpha++ = a ;
1090
1091             data[index    ] = r ;
1092             data[index + 1] = g ;
1093             data[index + 2] = b ;
1094             index += 3;
1095             source += 4 ;
1096         }
1097     }
1098     if ( hasMask )
1099         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1100     return image;
1101 }
1102
1103 #endif //wxUSE_IMAGE
1104
1105 bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type,
1106                         const wxPalette *palette) const
1107 {
1108     bool success = false;
1109     wxBitmapHandler *handler = FindHandler(type);
1110
1111     if ( handler )
1112     {
1113         success = handler->SaveFile(this, filename, type, palette);
1114     }
1115     else
1116     {
1117 #if wxUSE_IMAGE
1118         wxImage image = ConvertToImage();
1119         success = image.SaveFile(filename, type);
1120 #else
1121         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1122 #endif
1123     }
1124
1125     return success;
1126 }
1127
1128 bool wxBitmap::Ok() const
1129 {
1130    return (M_BITMAPDATA && M_BITMAPDATA->Ok());
1131 }
1132
1133 int wxBitmap::GetHeight() const
1134 {
1135    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1136
1137    return M_BITMAPDATA->GetHeight();
1138 }
1139
1140 int wxBitmap::GetWidth() const
1141 {
1142    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1143
1144    return M_BITMAPDATA->GetWidth() ;
1145 }
1146
1147 int wxBitmap::GetDepth() const
1148 {
1149    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1150
1151    return M_BITMAPDATA->GetDepth();
1152 }
1153
1154 #if WXWIN_COMPATIBILITY_2_4
1155
1156 int wxBitmap::GetQuality() const
1157 {
1158     return 0;
1159 }
1160
1161 #endif
1162
1163 wxMask *wxBitmap::GetMask() const
1164 {
1165    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1166
1167    return M_BITMAPDATA->m_bitmapMask;
1168 }
1169
1170 bool wxBitmap::HasAlpha() const
1171 {
1172    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1173
1174    return M_BITMAPDATA->HasAlpha() ;
1175 }
1176
1177 void wxBitmap::SetWidth(int w)
1178 {
1179     if (!M_BITMAPDATA)
1180         m_refData = new wxBitmapRefData;
1181
1182     M_BITMAPDATA->SetWidth(w);
1183 }
1184
1185 void wxBitmap::SetHeight(int h)
1186 {
1187     if (!M_BITMAPDATA)
1188         m_refData = new wxBitmapRefData;
1189
1190     M_BITMAPDATA->SetHeight(h);
1191 }
1192
1193 void wxBitmap::SetDepth(int d)
1194 {
1195     if (!M_BITMAPDATA)
1196         m_refData = new wxBitmapRefData;
1197
1198     M_BITMAPDATA->SetDepth(d);
1199 }
1200
1201 #if WXWIN_COMPATIBILITY_2_4
1202
1203 void wxBitmap::SetQuality(int WXUNUSED(quality))
1204 {
1205 }
1206
1207 #endif
1208
1209 void wxBitmap::SetOk(bool isOk)
1210 {
1211     if (!M_BITMAPDATA)
1212         m_refData = new wxBitmapRefData;
1213
1214     M_BITMAPDATA->SetOk(isOk);
1215 }
1216
1217 #if wxUSE_PALETTE
1218 wxPalette *wxBitmap::GetPalette() const
1219 {
1220    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1221
1222    return &M_BITMAPDATA->m_bitmapPalette;
1223 }
1224
1225 void wxBitmap::SetPalette(const wxPalette& palette)
1226 {
1227     if (!M_BITMAPDATA)
1228         m_refData = new wxBitmapRefData;
1229
1230     M_BITMAPDATA->m_bitmapPalette = palette ;
1231 }
1232 #endif // wxUSE_PALETTE
1233
1234 void wxBitmap::SetMask(wxMask *mask)
1235 {
1236     if (!M_BITMAPDATA)
1237         m_refData = new wxBitmapRefData;
1238
1239     // Remove existing mask if there is one.
1240     delete M_BITMAPDATA->m_bitmapMask;
1241
1242     M_BITMAPDATA->m_bitmapMask = mask ;
1243 }
1244
1245 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1246 {
1247     return WXHBITMAP(M_BITMAPDATA->GetHBITMAP((GWorldPtr*)mask));
1248 }
1249
1250 // ----------------------------------------------------------------------------
1251 // wxMask
1252 // ----------------------------------------------------------------------------
1253
1254 wxMask::wxMask()
1255 {
1256     Init() ;
1257 }
1258
1259 // Construct a mask from a bitmap and a colour indicating
1260 // the transparent area
1261 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
1262 {
1263     Init() ;
1264     Create(bitmap, colour);
1265 }
1266
1267 // Construct a mask from a mono bitmap (copies the bitmap).
1268 wxMask::wxMask(const wxBitmap& bitmap)
1269 {
1270     Init() ;
1271     Create(bitmap);
1272 }
1273
1274 // Construct a mask from a mono bitmap (copies the bitmap).
1275 wxMask::wxMask(const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1276 {
1277     Init() ;
1278     Create(data, width , height , bytesPerRow );
1279 }
1280
1281 wxMask::~wxMask()
1282 {
1283     if ( m_maskBitmap )
1284     {
1285         DisposeGWorld( (GWorldPtr) m_maskBitmap ) ;
1286         m_maskBitmap = NULL ;
1287     }
1288 }
1289
1290 void wxMask::Init()
1291 {
1292     m_width = m_height = m_bytesPerRow = 0 ;
1293     m_maskBitmap = NULL ;
1294 }
1295
1296 void *wxMask::GetRawAccess() const
1297 {
1298     return m_memBuf.GetData() ;
1299 }
1300
1301 // this can be a k8IndexedGrayPixelFormat GWorld, because it never stores other values than black or white
1302 // so no rainbox colors will be created by QD when blitting
1303
1304 void wxMask::RealizeNative()
1305 {
1306     if ( m_maskBitmap )
1307     {
1308        DisposeGWorld(  (GWorldPtr) m_maskBitmap ) ;
1309        m_maskBitmap = NULL ;
1310     }
1311     Rect rect = { 0 , 0 , m_height , m_width } ;
1312     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_maskBitmap , k8IndexedGrayPixelFormat , &rect , NULL , NULL , 0 ,
1313         (char*) m_memBuf.GetData() , m_bytesPerRow ) ) ;
1314 }
1315
1316 // Create a mask from a mono bitmap (copies the bitmap).
1317 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1318 {
1319     m_memBuf = data ;
1320     m_width = width ;
1321     m_height = height ;
1322     m_bytesPerRow = bytesPerRow ;
1323     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1324     RealizeNative() ;
1325     return true ;
1326 }
1327
1328 // Create a mask from a mono bitmap (copies the bitmap).
1329 bool wxMask::Create(const wxBitmap& bitmap)
1330 {
1331     m_width = bitmap.GetWidth() ;
1332     m_height = bitmap.GetHeight() ;
1333     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1334     size_t size = m_bytesPerRow * m_height ;
1335     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1336     memset( destdatabase , 0 , size ) ;
1337     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1338     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1339     {
1340         unsigned char *destdata= destdatabase ;
1341         for( int x = 0 ; x < m_width ; ++x )
1342         {
1343             srcdata++ ;
1344             unsigned char r = *srcdata++ ;
1345             unsigned char g = *srcdata++ ;
1346             unsigned char b = *srcdata++ ;
1347             if ( ( r + g + b ) > 0x10 )
1348                 *destdata++ = 0x00 ;
1349             else
1350                 *destdata++ = 0xFF ;
1351         }
1352     }
1353     m_memBuf.UngetWriteBuf( size ) ;
1354     RealizeNative() ;
1355     return true;
1356 }
1357
1358 // Create a mask from a bitmap and a colour indicating
1359 // the transparent area
1360 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1361 {
1362     m_width = bitmap.GetWidth() ;
1363     m_height = bitmap.GetHeight() ;
1364     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1365     size_t size = m_bytesPerRow * m_height ;
1366
1367     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1368     memset( destdatabase , 0 , size ) ;
1369     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1370     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow)
1371     {
1372         unsigned char *destdata= destdatabase ;
1373         for( int x = 0 ; x < m_width ; ++x )
1374         {
1375             srcdata++ ;
1376             unsigned char r = *srcdata++ ;
1377             unsigned char g = *srcdata++ ;
1378             unsigned char b = *srcdata++ ;
1379             if ( colour == wxColour( r , g , b) )
1380                 *destdata++ = 0x00 ;
1381             else
1382                 *destdata++ = 0xFF ;
1383         }
1384     }
1385     m_memBuf.UngetWriteBuf( size ) ;
1386     RealizeNative() ;
1387     return true;
1388 }
1389
1390 WXHBITMAP wxMask::GetHBITMAP() const
1391 {
1392     return m_maskBitmap ;
1393 }
1394
1395 // ----------------------------------------------------------------------------
1396 // wxBitmapHandler
1397 // ----------------------------------------------------------------------------
1398
1399 wxBitmapHandler::~wxBitmapHandler()
1400 {
1401 }
1402
1403 bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
1404 {
1405     return false;
1406 }
1407
1408 bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1409         int desiredWidth, int desiredHeight)
1410 {
1411     return false;
1412 }
1413
1414 bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
1415 {
1416     return false;
1417 }
1418
1419 // ----------------------------------------------------------------------------
1420 // Standard Handlers
1421 // ----------------------------------------------------------------------------
1422
1423 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1424 {
1425     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1426 public:
1427     inline wxPICTResourceHandler()
1428     {
1429         SetName(wxT("Macintosh Pict resource"));
1430         SetExtension(wxEmptyString);
1431         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1432     };
1433
1434     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1435           int desiredWidth, int desiredHeight);
1436 };
1437 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1438
1439
1440 bool  wxPICTResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1441           int desiredWidth, int desiredHeight)
1442 {
1443 #if wxUSE_METAFILE
1444     Str255 theName ;
1445     wxMacStringToPascal( name , theName ) ;
1446
1447     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1448     if ( thePict )
1449     {
1450         wxMetafile mf ;
1451         mf.SetHMETAFILE((WXHMETAFILE) thePict ) ;
1452         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1453         wxMemoryDC dc ;
1454         dc.SelectObject( *bitmap ) ;
1455         mf.Play( &dc ) ;
1456         dc.SelectObject( wxNullBitmap ) ;
1457         return true ;
1458     }
1459 #endif //wxUSE_METAFILE
1460     return false ;
1461 }
1462
1463
1464 void wxBitmap::InitStandardHandlers()
1465 {
1466     AddHandler(new wxPICTResourceHandler) ;
1467     AddHandler(new wxICONResourceHandler) ;
1468 }
1469
1470 // ----------------------------------------------------------------------------
1471 // raw bitmap access support
1472 // ----------------------------------------------------------------------------
1473
1474 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1475 {
1476     if ( !Ok() )
1477     {
1478         // no bitmap, no data (raw or otherwise)
1479         return NULL;
1480     }
1481
1482     data.m_width = GetWidth() ;
1483     data.m_height = GetHeight() ;
1484     data.m_stride = GetWidth() * 4 ;
1485     return GetRawAccess() ;
1486 }
1487
1488 void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
1489 {
1490     if ( !Ok() )
1491         return;
1492
1493     // TODO : if we have some information about the API we should check
1494     // this code looks strange...
1495
1496     if ( M_BITMAPDATA->HasAlpha() )
1497     {
1498         wxAlphaPixelData& data = (wxAlphaPixelData&)dataBase;
1499
1500         int w = data.GetWidth(),
1501             h = data.GetHeight();
1502
1503         wxBitmap bmpMask(GetWidth(), GetHeight(), 32);
1504         wxAlphaPixelData dataMask(bmpMask, data.GetOrigin(), wxSize(w, h));
1505         wxAlphaPixelData::Iterator pMask(dataMask),
1506                                    p(data);
1507         for ( int y = 0; y < h; y++ )
1508         {
1509             wxAlphaPixelData::Iterator rowStartMask = pMask,
1510                                        rowStart = p;
1511
1512             for ( int x = 0; x < w; x++ )
1513             {
1514                 const wxAlphaPixelData::Iterator::ChannelType
1515                     alpha = p.Alpha();
1516
1517                 pMask.Red() = alpha;
1518                 pMask.Green() = alpha;
1519                 pMask.Blue() = alpha;
1520
1521                 ++p;
1522                 ++pMask;
1523             }
1524
1525             p = rowStart;
1526             p.OffsetY(data, 1);
1527
1528             pMask = rowStartMask;
1529             pMask.OffsetY(dataMask, 1);
1530         }
1531
1532         SetMask(new wxMask(bmpMask));
1533     }
1534 }
1535
1536 void wxBitmap::UseAlpha()
1537 {
1538     // remember that we are using alpha channel, we'll need to create a proper
1539     // mask in UngetRawData()
1540     M_BITMAPDATA->UseAlpha( true );
1541 }