src/mac/carbon/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        bitmap.cpp
   3 // Purpose:     wxBitmap
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "bitmap.h"
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17
  18 #include "wx/bitmap.h"
  19 #include "wx/icon.h"
  20 #include "wx/log.h"
  21 #include "wx/image.h"
  22 #include "wx/metafile.h"
  23 #include "wx/xpmdecod.h"
  24
  25 #include "wx/rawbmp.h"
  26
  27 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
  28 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
  29 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject )
  30
  31 #ifdef __DARWIN__
  32     #include <ApplicationServices/ApplicationServices.h>
  33 #else
  34     #include <PictUtils.h>
  35 #endif
  36
  37 #include "wx/mac/uma.h"
  38
  39 #include "wx/dcmemory.h"
  40
  41 // Implementation Notes
  42 // --------------------
  43 //
  44 // we are always working with a 32 bit deep pixel buffer
  45 // under QuickDraw its alpha parts are going to be ignored in the GWorld,
  46 // therefore we have a separate GWorld there for blitting the mask in
  47
  48 // under Quartz then content is transformed into a CGImageRef representing the same data
  49 // which can be transferred to the GPU by the OS for fast rendering
  50
  51 // we don't dare premultiplied alpha yet
  52 #define wxMAC_USE_PREMULTIPLIED_ALPHA 0
  53
  54 #if wxUSE_BMPBUTTON
  55
  56 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
  57 {
  58     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
  59     if ( bitmap.Ok() )
  60     {
  61         wxBitmapRefData * bmap = bitmap.GetBitmapData() ;
  62         if ( bmap == NULL )
  63             return ;
  64
  65         if ( ( bmap->HasNativeSize() && forceType == 0 ) || forceType == kControlContentIconRef )
  66         {
  67             wxBitmap scaleBmp ;
  68
  69             wxBitmapRefData* bmp = bmap ;
  70
  71             if ( !bmap->HasNativeSize() )
  72             {
  73                 // as PICT conversion will only result in a 16x16 icon, let's attempt
  74                 // a few scales for better results
  75
  76                 int w = bitmap.GetWidth() ;
  77                 int h = bitmap.GetHeight() ;
  78                 int sz = wxMax( w , h ) ;
  79                 if ( sz == 24 || sz == 64)
  80                 {
  81                     scaleBmp = wxBitmap( bitmap.ConvertToImage().Scale( w * 2 , h * 2 ) ) ;
  82                     bmp = scaleBmp.GetBitmapData() ;
  83                 }
  84             }
  85
  86             info->contentType = kControlContentIconRef ;
  87             info->u.iconRef = bmp->GetIconRef() ;
  88             AcquireIconRef( info->u.iconRef ) ;
  89         }
  90 #if wxMAC_USE_CORE_GRAPHICS && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
  91         else if ( forceType == kControlContentCGImageRef )
  92         {
  93             info->contentType = kControlContentCGImageRef ;
  94             info->u.imageRef = (CGImageRef) bmap->CGImageCreate() ;
  95         }
  96 #endif
  97         else
  98         {
  99             info->contentType = kControlContentPictHandle ;
 100             info->u.picture = bmap->GetPictHandle() ;
 101         }
 102     }
 103 }
 104
 105 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
 106 {
 107     if ( info->contentType == kControlContentIconRef )
 108     {
 109         ReleaseIconRef( info->u.iconRef ) ;
 110     }
 111     else if ( info->contentType == 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 = NULL ;
 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         iconFamily = (IconFamilyHandle) NewHandle(8) ;
 271         (**iconFamily).resourceType = kIconFamilyType ;
 272         (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
 273
 274         int w = GetWidth() ;
 275         int h = GetHeight() ;
 276         int sz = wxMax( w , h ) ;
 277
 278         OSType dataType = 0 ;
 279         OSType maskType = 0 ;
 280
 281         if ( sz == 128 )
 282         {
 283             dataType = kThumbnail32BitData ;
 284             maskType = kThumbnail8BitMask ;
 285         }
 286         else if ( sz == 48 )
 287         {
 288             dataType = kHuge32BitData ;
 289             maskType = kHuge8BitMask ;
 290         }
 291         else if ( sz == 32 )
 292         {
 293             dataType = kLarge32BitData ;
 294             maskType = kLarge8BitMask ;
 295         }
 296         else if ( sz == 16 )
 297         {
 298             dataType = kSmall32BitData ;
 299             maskType = kSmall8BitMask ;
 300         }
 301
 302         if ( dataType != 0 )
 303         {
 304             // setup the header properly
 305
 306             Handle data = NULL ;
 307             Handle maskdata = NULL ;
 308             unsigned char * maskptr = NULL ;
 309             unsigned char * ptr = NULL ;
 310             size_t size ;
 311             size_t masksize ;
 312
 313             size = sz * sz * 4 ;
 314             data = NewHandle( size) ;
 315             HLock( data ) ;
 316             ptr = (unsigned char*) *data ;
 317             memset( ptr , 0, size ) ;
 318
 319             masksize = sz * sz ;
 320             maskdata = NewHandle( masksize ) ;
 321             HLock( maskdata ) ;
 322             maskptr = (unsigned char*) *maskdata ;
 323             memset( maskptr , 0 , masksize ) ;
 324
 325             bool hasAlpha = HasAlpha() ;
 326             wxMask *mask = m_bitmapMask ;
 327             unsigned char * source = (unsigned char*) GetRawAccess() ;
 328             unsigned char * masksource = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 329             for ( int y = 0 ; y < h ; ++y )
 330             {
 331                 unsigned char * dest = ptr + y * sz * 4 ;
 332                 unsigned char * maskdest = maskptr + y * sz ;
 333                 for ( int x = 0 ; x < w ; ++x )
 334                 {
 335                     unsigned char a = *source ++ ;
 336                     unsigned char r = *source ++ ;
 337                     unsigned char g = *source ++ ;
 338                     unsigned char b = *source ++ ;
 339
 340                     *dest++ = 0 ;
 341                     *dest++ = r ;
 342                     *dest++ = g ;
 343                     *dest++ = b ;
 344
 345                     if ( mask )
 346                         *maskdest++ = *masksource++ ;
 347                     else if ( hasAlpha )
 348                         *maskdest++ = a ;
 349                     else
 350                         *maskdest++ = 0xFF ;
 351                 }
 352             }
 353
 354             OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 355             wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 356
 357             err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 358             wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 359             HUnlock( data ) ;
 360             HUnlock( maskdata ) ;
 361             DisposeHandle( data ) ;
 362             DisposeHandle( maskdata ) ;
 363         }
 364         else
 365         {
 366             iconFamily = (IconFamilyHandle) NewHandle(8) ;
 367             (**iconFamily).resourceType = kIconFamilyType ;
 368             (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
 369             PicHandle pic = GetPictHandle() ;
 370             SetIconFamilyData( iconFamily, 'PICT' , (Handle) pic ) ;
 371         }
 372
 373         // transform into IconRef
 374
 375         static int iconCounter = 2 ;
 376 #ifdef __WXDEBUG__
 377         OSStatus err =
 378 #endif
 379             RegisterIconRefFromIconFamily( 'WXNG' , (OSType) iconCounter, iconFamily, &m_iconRef ) ;
 380         wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 381         // we have to retain a reference, as Unregister will decrement it
 382         AcquireIconRef( m_iconRef ) ;
 383         UnregisterIconRef( 'WXNG' , (OSType) iconCounter ) ;
 384         DisposeHandle( (Handle) iconFamily ) ;
 385         ++iconCounter ;
 386     }
 387     return m_iconRef ;
 388 }
 389
 390 PicHandle wxBitmapRefData::GetPictHandle()
 391 {
 392     if ( m_pictHandle == NULL )
 393     {
 394         CGrafPtr        origPort = NULL ;
 395         GDHandle        origDev = NULL ;
 396         GWorldPtr       wp = NULL ;
 397         GWorldPtr       mask = NULL ;
 398         int height = GetHeight() ;
 399         int width = GetWidth() ;
 400
 401         Rect rect = { 0 , 0 , height , width } ;
 402
 403         GetGWorld( &origPort , &origDev ) ;
 404
 405         wp = GetHBITMAP( &mask ) ;
 406
 407         RgnHandle clipRgn = NULL ;
 408
 409         if ( mask )
 410         {
 411             GWorldPtr monoworld ;
 412             clipRgn = NewRgn() ;
 413             OSStatus err = NewGWorld( &monoworld , 1 , &rect , NULL , NULL , 0 ) ;
 414             verify_noerr(err) ;
 415             LockPixels( GetGWorldPixMap( monoworld ) ) ;
 416             LockPixels( GetGWorldPixMap( mask ) ) ;
 417             SetGWorld( monoworld , NULL ) ;
 418             RGBColor       white = { 0xffff ,0xffff , 0xffff } ;
 419             RGBColor       black = { 0x0000 ,0x0000 , 0x0000 } ;
 420             RGBForeColor( &black ) ;
 421             RGBBackColor( &white ) ;
 422             CopyBits(GetPortBitMapForCopyBits(mask),
 423                     GetPortBitMapForCopyBits(monoworld),
 424                     &rect,
 425                     &rect,
 426                     srcCopy,NULL);
 427             BitMapToRegion( clipRgn , (BitMap*) *GetGWorldPixMap( monoworld ) ) ;
 428             UnlockPixels( GetGWorldPixMap( monoworld ) ) ;
 429             UnlockPixels( GetGWorldPixMap( mask ) ) ;
 430             DisposeGWorld( monoworld ) ;
 431         }
 432
 433         SetGWorld( wp , NULL ) ;
 434         Rect portRect ;
 435         GetPortBounds( wp , &portRect ) ;
 436         m_pictHandle = OpenPicture(&portRect);
 437
 438         if(m_pictHandle)
 439         {
 440             RGBColor       white = { 0xffff ,0xffff , 0xffff } ;
 441             RGBColor       black = { 0x0000 ,0x0000 , 0x0000 } ;
 442             RGBForeColor( &black ) ;
 443             RGBBackColor( &white ) ;
 444
 445             if ( clipRgn )
 446                 SetClip( clipRgn ) ;
 447
 448             LockPixels( GetGWorldPixMap( wp ) ) ;
 449             CopyBits(GetPortBitMapForCopyBits(wp),
 450                     GetPortBitMapForCopyBits(wp),
 451                     &portRect,
 452                     &portRect,
 453                     srcCopy,clipRgn);
 454             UnlockPixels( GetGWorldPixMap( wp ) ) ;
 455             ClosePicture();
 456         }
 457         SetGWorld( origPort , origDev ) ;
 458         if ( clipRgn )
 459             DisposeRgn( clipRgn ) ;
 460     }
 461     return m_pictHandle ;
 462 }
 463
 464 #ifdef __WXMAC_OSX__
 465 void wxMacMemoryBufferReleaseProc(void *info, const void *data, size_t size)
 466 {
 467     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
 468     wxASSERT( data == membuf->GetData() ) ;
 469     delete membuf ;
 470 }
 471
 472 CGImageRef wxBitmapRefData::CGImageCreate() const
 473 {
 474     wxASSERT( m_ok ) ;
 475     wxASSERT( m_rawAccessCount >= 0 ) ;
 476     CGImageRef image ;
 477     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 478     {
 479         size_t imageSize = m_width * m_height * 4 ;
 480         void * dataBuffer = m_memBuf.GetData() ;
 481         int w = m_width ;
 482         int h = m_height ;
 483         CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 484         wxMemoryBuffer* membuf = NULL ;
 485
 486         if ( m_bitmapMask )
 487         {
 488             membuf = new wxMemoryBuffer( imageSize ) ;
 489             memcpy( membuf->GetData() , dataBuffer , imageSize ) ;
 490             unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 491             int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 492             unsigned char *destalpha = (unsigned char *) membuf->GetData() ;
 493             alphaInfo = kCGImageAlphaFirst ;
 494             for ( int y = 0 ; y < h ; ++y , sourcemaskstart += maskrowbytes)
 495             {
 496                 unsigned char *sourcemask = sourcemaskstart ;
 497                 for( int x = 0 ; x < w ; ++x , sourcemask++ , destalpha += 4 )
 498                 {
 499                     *destalpha = *sourcemask ;
 500                 }
 501             }
 502         }
 503         else if ( m_hasAlpha )
 504         {
 505 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 506             alphaInfo = kCGImageAlphaPremultipliedFirst ;
 507 #else
 508             alphaInfo = kCGImageAlphaFirst ;
 509 #endif
 510             membuf = new wxMemoryBuffer( m_memBuf ) ;
 511         }
 512         else
 513         {
 514             membuf = new wxMemoryBuffer( m_memBuf ) ;
 515         }
 516         CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 517         CGDataProviderRef dataProvider =
 518             CGDataProviderCreateWithData( membuf , (const void *)membuf->GetData() , imageSize,
 519                 wxMacMemoryBufferReleaseProc );
 520         image =
 521             ::CGImageCreate( w, h, 8 , 32 , 4 * m_width , colorSpace, alphaInfo ,
 522                         dataProvider, NULL , false , kCGRenderingIntentDefault );
 523         CGDataProviderRelease( dataProvider);
 524     }
 525     else
 526     {
 527         image = m_cgImageRef ;
 528         CGImageRetain( image ) ;
 529     }
 530     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 531     {
 532         // we keep it for later use
 533         m_cgImageRef = image ;
 534         CGImageRetain( image ) ;
 535     }
 536     return image ;
 537 }
 538 #endif
 539
 540 GWorldPtr wxBitmapRefData::GetHBITMAP(GWorldPtr* mask) const
 541 {
 542     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 543     if ( mask )
 544     {
 545         *mask = NULL ;
 546         if ( m_bitmapMask )
 547             *mask = (GWorldPtr) m_bitmapMask->GetHBITMAP() ;
 548         else if ( m_hasAlpha )
 549         {
 550 #if !wxMAC_USE_CORE_GRAPHICS
 551             if ( m_rawAccessCount > 0 )
 552                 UpdateAlphaMask() ;
 553 #else
 554             // this structure is not kept in synch when using CG, so if someone
 555             // is really accessing the Graphports, we have to sync it
 556             UpdateAlphaMask() ;
 557 #endif
 558             *mask = m_hMaskBitmap ;
 559         }
 560     }
 561     return m_hBitmap ;
 562 }
 563
 564 void wxBitmapRefData::UpdateAlphaMask() const
 565 {
 566     if ( m_hasAlpha )
 567     {
 568         unsigned char *sourcemask = (unsigned char *) GetRawAccess() ;
 569         unsigned char *destalphabase = (unsigned char *) m_maskMemBuf.GetData() ;
 570
 571         int h = GetHeight() ;
 572         int w = GetWidth() ;
 573
 574         for ( int y = 0 ; y < h ; ++y , destalphabase += m_maskBytesPerRow )
 575         {
 576             unsigned char* destalpha = destalphabase ;
 577             for( int x = 0 ; x < w ; ++x , sourcemask += 4 )
 578             {
 579                 // we must have 24 bit depth for non quartz smooth alpha
 580                 *destalpha++ = 255 ;
 581                 *destalpha++ = 255  - *sourcemask ;
 582                 *destalpha++ = 255  - *sourcemask ;
 583                 *destalpha++ = 255  - *sourcemask ;
 584             }
 585         }
 586     }
 587 }
 588
 589 void wxBitmapRefData::Free()
 590 {
 591     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 592
 593 #if wxMAC_USE_CORE_GRAPHICS
 594     if ( m_cgImageRef )
 595     {
 596         CGImageRelease( m_cgImageRef ) ;
 597         m_cgImageRef = NULL ;
 598     }
 599 #endif
 600     if ( m_iconRef )
 601     {
 602         ReleaseIconRef( m_iconRef ) ;
 603         m_iconRef = NULL ;
 604     }
 605     if ( m_pictHandle )
 606     {
 607         KillPicture( m_pictHandle ) ;
 608         m_pictHandle = NULL ;
 609     }
 610     if ( m_hBitmap )
 611     {
 612         DisposeGWorld( MAC_WXHBITMAP(m_hBitmap) ) ;
 613         m_hBitmap = NULL ;
 614     }
 615     if ( m_hMaskBitmap )
 616     {
 617         DisposeGWorld( MAC_WXHBITMAP(m_hMaskBitmap) ) ;
 618         m_hMaskBitmap = NULL ;
 619     }
 620
 621     if (m_bitmapMask)
 622     {
 623         delete m_bitmapMask;
 624         m_bitmapMask = NULL;
 625     }
 626 }
 627
 628 wxBitmapRefData::~wxBitmapRefData()
 629 {
 630     Free() ;
 631 }
 632
 633 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 634 {
 635     int w = icon.GetWidth() ;
 636     int h = icon.GetHeight() ;
 637
 638
 639     Create( icon.GetWidth() , icon.GetHeight() ) ;
 640
 641     bool created = false ;
 642
 643     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 644     {
 645         IconFamilyHandle iconFamily = NULL ;
 646         Handle imagehandle = NewHandle(0) ;
 647         Handle maskhandle = NewHandle(0) ;
 648
 649         OSType maskType = 0;
 650         OSType dataType = 0;
 651         IconSelectorValue selector = 0 ;
 652         if ( w == 128 )
 653         {
 654             dataType = kThumbnail32BitData ;
 655             maskType = kThumbnail8BitMask ;
 656             selector = kSelectorAllAvailableData ;
 657         }
 658         else if ( w == 48 )
 659         {
 660             dataType = kHuge32BitData ;
 661             maskType = kHuge8BitMask ;
 662             selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 663         }
 664         else if ( w == 32 )
 665         {
 666             dataType = kLarge32BitData ;
 667             maskType = kLarge8BitMask ;
 668             selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 669         }
 670         else if ( w == 16 )
 671         {
 672             dataType = kSmall32BitData ;
 673             maskType = kSmall8BitMask ;
 674             selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 675         }
 676
 677
 678         OSStatus err = ( IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ) ;
 679
 680         err =( GetIconFamilyData( iconFamily , dataType , imagehandle ) ) ;
 681         err =( GetIconFamilyData( iconFamily , maskType , maskhandle ) ) ;
 682         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 683         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 684
 685         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 686         {
 687             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 688             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 689             UseAlpha() ;
 690             unsigned char *source = (unsigned char *) *imagehandle ;
 691             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 692
 693             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 694             for ( int y = 0 ; y < h ; ++y )
 695             {
 696                 for ( int x = 0 ; x < w ; ++x )
 697                 {
 698                     *destination++ = *sourcemask++ ;
 699                     source++ ;
 700                     *destination++ = *source++ ;
 701                     *destination++ = *source++ ;
 702                     *destination++ = *source++ ;
 703                 }
 704             }
 705             EndRawAccess() ;
 706             DisposeHandle( imagehandle ) ;
 707             DisposeHandle( maskhandle ) ;
 708         }
 709         DisposeHandle( (Handle) iconFamily ) ;
 710
 711     }
 712
 713     if ( !created )
 714     {
 715         wxMemoryDC dc ;
 716         dc.SelectObject( *this ) ;
 717         dc.DrawIcon( icon , 0 , 0 ) ;
 718         dc.SelectObject( wxNullBitmap ) ;
 719     }
 720     return true;
 721 }
 722
 723 wxBitmap::wxBitmap()
 724 {
 725 }
 726
 727 wxBitmap::~wxBitmap()
 728 {
 729 }
 730
 731 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 732 {
 733     m_refData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 734
 735     if ( no_bits == 1 )
 736     {
 737         int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 738         if ( the_width % (sizeof(unsigned char) * 8) ) {
 739             linesize += sizeof(unsigned char);
 740         }
 741         unsigned char* linestart = (unsigned char*) bits ;
 742         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 743         for ( int y = 0 ; y < the_height ; ++y , linestart += linesize )
 744         {
 745             for ( int x = 0 ; x < the_width ; ++x )
 746             {
 747                 int index = x / 8 ;
 748                 int bit = x % 8 ;
 749                 int mask = 1 << bit ;
 750                 if ( linestart[index] & mask )
 751                 {
 752                     *destination++ = 0xFF ;
 753                     *destination++ = 0 ;
 754                     *destination++ = 0 ;
 755                     *destination++ = 0 ;
 756                 }
 757                 else
 758                 {
 759                     *destination++ = 0xFF ;
 760                     *destination++ = 0xFF ;
 761                     *destination++ = 0xFF ;
 762                     *destination++ = 0xFF ;
 763                 }
 764             }
 765         }
 766         EndRawAccess() ;
 767     }
 768     else
 769     {
 770         wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 771     }
 772 }
 773
 774 wxBitmap::wxBitmap(int w, int h, int d)
 775 {
 776     (void)Create(w, h, d);
 777 }
 778
 779 wxBitmap::wxBitmap(void *data, wxBitmapType type, int width, int height, int depth)
 780 {
 781     (void) Create(data, type, width, height, depth);
 782 }
 783
 784 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 785 {
 786     LoadFile(filename, type);
 787 }
 788
 789 wxBitmap::wxBitmap(const char **bits)
 790 {
 791     (void) CreateFromXpm(bits);
 792 }
 793
 794 wxBitmap::wxBitmap(char **bits)
 795 {
 796     (void) CreateFromXpm((const char **)bits);
 797 }
 798
 799 void* wxBitmap::GetRawAccess() const
 800 {
 801     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 802     return M_BITMAPDATA->GetRawAccess() ;
 803 }
 804
 805 void* wxBitmap::BeginRawAccess()
 806 {
 807     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 808     return M_BITMAPDATA->BeginRawAccess() ;
 809 }
 810
 811 void wxBitmap::EndRawAccess()
 812 {
 813     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 814     M_BITMAPDATA->EndRawAccess() ;
 815 }
 816
 817 bool wxBitmap::CreateFromXpm(const char **bits)
 818 {
 819 #if wxUSE_IMAGE
 820     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
 821     wxXPMDecoder decoder;
 822     wxImage img = decoder.ReadData(bits);
 823     wxCHECK_MSG( img.Ok(), FALSE, wxT("invalid bitmap data") )
 824     *this = wxBitmap(img);
 825     return TRUE;
 826 #else
 827     return FALSE;
 828 #endif
 829 }
 830
 831 #ifdef __WXMAC_OSX__
 832 WXCGIMAGEREF wxBitmap::CGImageCreate() const
 833 {
 834     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 835     return M_BITMAPDATA->CGImageCreate() ;
 836 }
 837 #endif
 838
 839 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
 840 {
 841     wxCHECK_MSG( Ok() &&
 842                 (rect.x >= 0) && (rect.y >= 0) &&
 843                 (rect.x+rect.width <= GetWidth()) &&
 844                 (rect.y+rect.height <= GetHeight()),
 845                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 846
 847
 848     wxBitmap ret( rect.width, rect.height, GetDepth() );
 849     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 850
 851
 852     int sourcewidth = GetWidth() ;
 853     int destwidth = rect.width ;
 854     int destheight = rect.height ;
 855     {
 856         unsigned char * sourcedata = (unsigned char*) GetRawAccess() ;
 857         unsigned char * destdata = (unsigned char*) ret.BeginRawAccess() ;
 858         int sourcelinesize = sourcewidth * 4 ;
 859         int destlinesize = destwidth * 4 ;
 860         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
 861         unsigned char *dest = destdata ;
 862         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 863         {
 864             memcpy( dest , source , destlinesize ) ;
 865         }
 866     }
 867     ret.EndRawAccess() ;
 868
 869     if ( M_BITMAPDATA->m_bitmapMask )
 870     {
 871         wxMemoryBuffer maskbuf ;
 872         int rowBytes = ( destwidth + 3 ) & 0xFFFFFFC ;
 873         size_t maskbufsize = rowBytes * destheight ;
 874         unsigned char * destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
 875
 876         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow()  ;
 877         int destlinesize = rowBytes ;
 878         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
 879         source += rect.x + rect.y * sourcelinesize ;
 880         unsigned char *dest = destdata ;
 881
 882         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 883         {
 884             memcpy( dest , source , destlinesize ) ;
 885         }
 886         maskbuf.UngetWriteBuf( maskbufsize ) ;
 887         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
 888     }
 889     else if ( HasAlpha() )
 890         ret.UseAlpha() ;
 891
 892     return ret;
 893 }
 894
 895 bool wxBitmap::Create(int w, int h, int d)
 896 {
 897     UnRef();
 898
 899     if ( d < 0 )
 900         d = wxDisplayDepth() ;
 901
 902     m_refData = new wxBitmapRefData( w , h , d );
 903
 904     return M_BITMAPDATA->Ok() ;
 905 }
 906
 907 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
 908 {
 909     UnRef();
 910
 911     wxBitmapHandler *handler = FindHandler(type);
 912
 913     if ( handler )
 914     {
 915         m_refData = new wxBitmapRefData;
 916
 917         return handler->LoadFile(this, filename, type, -1, -1);
 918     }
 919     else
 920     {
 921 #if wxUSE_IMAGE
 922         wxImage loadimage(filename, type);
 923         if (loadimage.Ok()) {
 924             *this = loadimage;
 925             return true;
 926         }
 927 #endif
 928     }
 929     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 930     return false;
 931 }
 932
 933 bool wxBitmap::Create(void *data, wxBitmapType type, int width, int height, int depth)
 934 {
 935     UnRef();
 936
 937     m_refData = new wxBitmapRefData;
 938
 939     wxBitmapHandler *handler = FindHandler(type);
 940
 941     if ( handler == NULL ) {
 942         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 943
 944         return FALSE;
 945     }
 946
 947     return handler->Create(this, data, type, width, height, depth);
 948 }
 949
 950 #if wxUSE_IMAGE
 951
 952 wxBitmap::wxBitmap(const wxImage& image, int depth)
 953 {
 954     wxCHECK_RET( image.Ok(), wxT("invalid image") )
 955
 956     // width and height of the device-dependent bitmap
 957     int width = image.GetWidth();
 958     int height = image.GetHeight();
 959
 960     m_refData = new wxBitmapRefData( width , height , depth ) ;;
 961
 962     // Create picture
 963
 964     bool hasAlpha = false ;
 965
 966     if ( image.HasMask() )
 967     {
 968         // takes precedence, don't mix with alpha info
 969     }
 970     else
 971     {
 972         hasAlpha = image.HasAlpha() ;
 973     }
 974
 975     if ( hasAlpha )
 976         UseAlpha() ;
 977
 978     unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 979
 980     register unsigned char* data = image.GetData();
 981     const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
 982     for (int y = 0; y < height; y++)
 983     {
 984         for (int x = 0; x < width; x++)
 985         {
 986             if ( hasAlpha )
 987             {
 988                 const unsigned char a = *alpha++;
 989                 *destination++ = a ;
 990 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 991                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 992                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 993                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 994 #else
 995                 *destination++ = *data++ ;
 996                 *destination++ = *data++ ;
 997                 *destination++ = *data++ ;
 998 #endif
 999             }
1000             else
1001             {
1002                 *destination++ = 0xFF ;
1003                 *destination++ = *data++ ;
1004                 *destination++ = *data++ ;
1005                 *destination++ = *data++ ;
1006             }
1007         }
1008     }
1009     EndRawAccess() ;
1010     if ( image.HasMask() )
1011     {
1012         SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
1013     }
1014 }
1015
1016 wxImage wxBitmap::ConvertToImage() const
1017 {
1018     wxImage image;
1019
1020     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
1021
1022     // create an wxImage object
1023     int width = GetWidth();
1024     int height = GetHeight();
1025     image.Create( width, height );
1026
1027     unsigned char *data = image.GetData();
1028     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
1029
1030     unsigned char* source = (unsigned char*) GetRawAccess() ;
1031
1032     bool hasAlpha = false ;
1033     bool hasMask = false ;
1034     int maskBytesPerRow = 0 ;
1035     unsigned char *alpha = NULL ;
1036     unsigned char *mask = NULL ;
1037     if ( HasAlpha() )
1038     {
1039         hasAlpha = true ;
1040     }
1041
1042     if ( GetMask() )
1043     {
1044         hasMask = true ;
1045         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1046         maskBytesPerRow = GetMask()->GetBytesPerRow() ;
1047     }
1048
1049     if ( hasAlpha )
1050     {
1051         image.SetAlpha() ;
1052         alpha = image.GetAlpha() ;
1053     }
1054     int index = 0;
1055
1056     // The following masking algorithm is the same as well in msw/gtk:
1057     // the colour used as transparent one in wxImage and the one it is
1058     // replaced with when it really occurs in the bitmap
1059     static const int MASK_RED = 1;
1060     static const int MASK_GREEN = 2;
1061     static const int MASK_BLUE = 3;
1062     static const int MASK_BLUE_REPLACEMENT = 2;
1063
1064     for (int yy = 0; yy < height; yy++ , mask += maskBytesPerRow )
1065     {
1066         unsigned char * maskp = mask ;
1067         for (int xx = 0; xx < width; xx++)
1068         {
1069             long color = *((long*) source) ;
1070             unsigned char a = ((color&0xFF000000) >> 24) ;
1071             unsigned char r = ((color&0x00FF0000) >> 16) ;
1072             unsigned char g = ((color&0x0000FF00) >> 8) ;
1073             unsigned char b = (color&0x000000FF);
1074             if ( hasMask )
1075             {
1076                 if ( *maskp++ == 0 )
1077                 {
1078                     if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1079                         b = MASK_BLUE_REPLACEMENT ;
1080                     else
1081                     {
1082                         r = MASK_RED ;
1083                         g = MASK_GREEN ;
1084                         b = MASK_BLUE ;
1085                     }
1086                 }
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     wxBitmapHandler *handler = FindHandler(type);
1109
1110     if ( handler )
1111     {
1112         return handler->SaveFile(this, filename, type, palette);
1113     }
1114     else
1115     {
1116 #if wxUSE_IMAGE
1117         wxImage image = ConvertToImage();
1118         return image.SaveFile(filename, type);
1119 #endif
1120     }
1121
1122     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1123     return false;
1124 }
1125
1126 bool wxBitmap::Ok() const
1127 {
1128    return (M_BITMAPDATA && M_BITMAPDATA->Ok());
1129 }
1130
1131 int wxBitmap::GetHeight() const
1132 {
1133    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1134
1135    return M_BITMAPDATA->GetHeight();
1136 }
1137
1138 int wxBitmap::GetWidth() const
1139 {
1140    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1141
1142    return M_BITMAPDATA->GetWidth() ;
1143 }
1144
1145 int wxBitmap::GetDepth() const
1146 {
1147    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1148
1149    return M_BITMAPDATA->GetDepth();
1150 }
1151
1152 #if WXWIN_COMPATIBILITY_2_4
1153
1154 int wxBitmap::GetQuality() const
1155 {
1156     return 0;
1157 }
1158
1159 #endif
1160
1161 wxMask *wxBitmap::GetMask() const
1162 {
1163    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1164
1165    return M_BITMAPDATA->m_bitmapMask;
1166 }
1167
1168 bool wxBitmap::HasAlpha() const
1169 {
1170    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1171
1172    return M_BITMAPDATA->HasAlpha() ;
1173 }
1174
1175 void wxBitmap::SetWidth(int w)
1176 {
1177     if (!M_BITMAPDATA)
1178         m_refData = new wxBitmapRefData;
1179
1180     M_BITMAPDATA->SetWidth(w);
1181 }
1182
1183 void wxBitmap::SetHeight(int h)
1184 {
1185     if (!M_BITMAPDATA)
1186         m_refData = new wxBitmapRefData;
1187
1188     M_BITMAPDATA->SetHeight(h);
1189 }
1190
1191 void wxBitmap::SetDepth(int d)
1192 {
1193     if (!M_BITMAPDATA)
1194         m_refData = new wxBitmapRefData;
1195
1196     M_BITMAPDATA->SetDepth(d);
1197 }
1198
1199 #if WXWIN_COMPATIBILITY_2_4
1200
1201 void wxBitmap::SetQuality(int WXUNUSED(quality))
1202 {
1203 }
1204
1205 #endif
1206
1207 void wxBitmap::SetOk(bool isOk)
1208 {
1209     if (!M_BITMAPDATA)
1210         m_refData = new wxBitmapRefData;
1211
1212     M_BITMAPDATA->SetOk(isOk);
1213 }
1214
1215 #if wxUSE_PALETTE
1216 wxPalette *wxBitmap::GetPalette() const
1217 {
1218    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1219
1220    return &M_BITMAPDATA->m_bitmapPalette;
1221 }
1222
1223 void wxBitmap::SetPalette(const wxPalette& palette)
1224 {
1225     if (!M_BITMAPDATA)
1226         m_refData = new wxBitmapRefData;
1227
1228     M_BITMAPDATA->m_bitmapPalette = palette ;
1229 }
1230 #endif // wxUSE_PALETTE
1231
1232 void wxBitmap::SetMask(wxMask *mask)
1233 {
1234     if (!M_BITMAPDATA)
1235         m_refData = new wxBitmapRefData;
1236
1237     // Remove existing mask if there is one.
1238     delete M_BITMAPDATA->m_bitmapMask;
1239
1240     M_BITMAPDATA->m_bitmapMask = mask ;
1241 }
1242
1243 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1244 {
1245     return WXHBITMAP(M_BITMAPDATA->GetHBITMAP((GWorldPtr*)mask));
1246 }
1247
1248 // ----------------------------------------------------------------------------
1249 // wxMask
1250 // ----------------------------------------------------------------------------
1251
1252 wxMask::wxMask()
1253 {
1254     Init() ;
1255 }
1256
1257 // Construct a mask from a bitmap and a colour indicating
1258 // the transparent area
1259 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
1260 {
1261     Init() ;
1262     Create(bitmap, colour);
1263 }
1264
1265 // Construct a mask from a mono bitmap (copies the bitmap).
1266 wxMask::wxMask(const wxBitmap& bitmap)
1267 {
1268     Init() ;
1269     Create(bitmap);
1270 }
1271
1272 // Construct a mask from a mono bitmap (copies the bitmap).
1273 wxMask::wxMask(const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1274 {
1275     Init() ;
1276     Create(data, width , height , bytesPerRow );
1277 }
1278
1279 wxMask::~wxMask()
1280 {
1281     if ( m_maskBitmap )
1282     {
1283         DisposeGWorld( (GWorldPtr) m_maskBitmap ) ;
1284         m_maskBitmap = NULL ;
1285     }
1286 }
1287
1288 void wxMask::Init()
1289 {
1290     m_width = m_height = m_bytesPerRow = 0 ;
1291     m_maskBitmap = NULL ;
1292 }
1293
1294 void *wxMask::GetRawAccess() const
1295 {
1296     return m_memBuf.GetData() ;
1297 }
1298
1299 // this can be a k8IndexedGrayPixelFormat GWorld, because it never stores other values than black or white
1300 // so no rainbox colors will be created by QD when blitting
1301
1302 void wxMask::RealizeNative()
1303 {
1304     if ( m_maskBitmap )
1305     {
1306        DisposeGWorld(  (GWorldPtr) m_maskBitmap ) ;
1307        m_maskBitmap = NULL ;
1308     }
1309     Rect rect = { 0 , 0 , m_height , m_width } ;
1310     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_maskBitmap , k8IndexedGrayPixelFormat , &rect , NULL , NULL , 0 ,
1311         (char*) m_memBuf.GetData() , m_bytesPerRow ) ) ;
1312 }
1313
1314 // Create a mask from a mono bitmap (copies the bitmap).
1315 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1316 {
1317     m_memBuf = data ;
1318     m_width = width ;
1319     m_height = height ;
1320     m_bytesPerRow = bytesPerRow ;
1321     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1322     RealizeNative() ;
1323     return true ;
1324 }
1325
1326 // Create a mask from a mono bitmap (copies the bitmap).
1327 bool wxMask::Create(const wxBitmap& bitmap)
1328 {
1329     m_width = bitmap.GetWidth() ;
1330     m_height = bitmap.GetHeight() ;
1331     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1332     size_t size = m_bytesPerRow * m_height ;
1333     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1334     memset( destdatabase , 0 , size ) ;
1335     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1336     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1337     {
1338         unsigned char *destdata= destdatabase ;
1339         for( int x = 0 ; x < m_width ; ++x )
1340         {
1341             srcdata++ ;
1342             unsigned char r = *srcdata++ ;
1343             unsigned char g = *srcdata++ ;
1344             unsigned char b = *srcdata++ ;
1345             if ( ( r + g + b ) > 0x10 )
1346                 *destdata++ = 0x00 ;
1347             else
1348                 *destdata++ = 0xFF ;
1349         }
1350     }
1351     m_memBuf.UngetWriteBuf( size ) ;
1352     RealizeNative() ;
1353     return TRUE;
1354 }
1355
1356 // Create a mask from a bitmap and a colour indicating
1357 // the transparent area
1358 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1359 {
1360     m_width = bitmap.GetWidth() ;
1361     m_height = bitmap.GetHeight() ;
1362     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1363     size_t size = m_bytesPerRow * m_height ;
1364
1365     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1366     memset( destdatabase , 0 , size ) ;
1367     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1368     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow)
1369     {
1370         unsigned char *destdata= destdatabase ;
1371         for( int x = 0 ; x < m_width ; ++x )
1372         {
1373             srcdata++ ;
1374             unsigned char r = *srcdata++ ;
1375             unsigned char g = *srcdata++ ;
1376             unsigned char b = *srcdata++ ;
1377             if ( colour == wxColour( r , g , b) )
1378                 *destdata++ = 0x00 ;
1379             else
1380                 *destdata++ = 0xFF ;
1381         }
1382     }
1383     m_memBuf.UngetWriteBuf( size ) ;
1384     RealizeNative() ;
1385     return TRUE;
1386 }
1387
1388 WXHBITMAP wxMask::GetHBITMAP() const
1389 {
1390     return m_maskBitmap ;
1391 }
1392
1393 // ----------------------------------------------------------------------------
1394 // wxBitmapHandler
1395 // ----------------------------------------------------------------------------
1396
1397 wxBitmapHandler::~wxBitmapHandler()
1398 {
1399 }
1400
1401 bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
1402 {
1403     return FALSE;
1404 }
1405
1406 bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1407         int desiredWidth, int desiredHeight)
1408 {
1409     return FALSE;
1410 }
1411
1412 bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
1413 {
1414     return FALSE;
1415 }
1416
1417 // ----------------------------------------------------------------------------
1418 // Standard Handlers
1419 // ----------------------------------------------------------------------------
1420
1421 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1422 {
1423     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1424 public:
1425     inline wxPICTResourceHandler()
1426     {
1427         SetName(wxT("Macintosh Pict resource"));
1428         SetExtension(wxEmptyString);
1429         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1430     };
1431
1432     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1433           int desiredWidth, int desiredHeight);
1434 };
1435 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1436
1437
1438 bool  wxPICTResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1439           int desiredWidth, int desiredHeight)
1440 {
1441 #if wxUSE_METAFILE
1442     Str255 theName ;
1443     wxMacStringToPascal( name , theName ) ;
1444
1445     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1446     if ( thePict )
1447     {
1448         wxMetafile mf ;
1449         mf.SetHMETAFILE((WXHMETAFILE) thePict ) ;
1450         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1451         wxMemoryDC dc ;
1452         dc.SelectObject( *bitmap ) ;
1453         mf.Play( &dc ) ;
1454         dc.SelectObject( wxNullBitmap ) ;
1455         return TRUE ;
1456     }
1457 #endif //wxUSE_METAFILE
1458     return FALSE ;
1459 }
1460
1461
1462 void wxBitmap::InitStandardHandlers()
1463 {
1464     AddHandler(new wxPICTResourceHandler) ;
1465     AddHandler(new wxICONResourceHandler) ;
1466 }
1467
1468 // ----------------------------------------------------------------------------
1469 // raw bitmap access support
1470 // ----------------------------------------------------------------------------
1471
1472 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1473 {
1474     if ( !Ok() )
1475     {
1476         // no bitmap, no data (raw or otherwise)
1477         return NULL;
1478     }
1479
1480     data.m_width = GetWidth() ;
1481     data.m_height = GetHeight() ;
1482     data.m_stride = GetWidth() * 4 ;
1483     return GetRawAccess() ;
1484 }
1485
1486 void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
1487 {
1488     if ( !Ok() )
1489         return;
1490
1491     // TODO : if we have some information about the API we should check
1492     // this code looks strange...
1493
1494     if ( M_BITMAPDATA->HasAlpha() )
1495     {
1496         wxAlphaPixelData& data = (wxAlphaPixelData&)dataBase;
1497
1498         int w = data.GetWidth(),
1499             h = data.GetHeight();
1500
1501         wxBitmap bmpMask(GetWidth(), GetHeight(), 32);
1502         wxAlphaPixelData dataMask(bmpMask, data.GetOrigin(), wxSize(w, h));
1503         wxAlphaPixelData::Iterator pMask(dataMask),
1504                                    p(data);
1505         for ( int y = 0; y < h; y++ )
1506         {
1507             wxAlphaPixelData::Iterator rowStartMask = pMask,
1508                                        rowStart = p;
1509
1510             for ( int x = 0; x < w; x++ )
1511             {
1512                 const wxAlphaPixelData::Iterator::ChannelType
1513                     alpha = p.Alpha();
1514
1515                 pMask.Red() = alpha;
1516                 pMask.Green() = alpha;
1517                 pMask.Blue() = alpha;
1518
1519                 ++p;
1520                 ++pMask;
1521             }
1522
1523             p = rowStart;
1524             p.OffsetY(data, 1);
1525
1526             pMask = rowStartMask;
1527             pMask.OffsetY(dataMask, 1);
1528         }
1529
1530         SetMask(new wxMask(bmpMask));
1531     }
1532 }
1533
1534 void wxBitmap::UseAlpha()
1535 {
1536     // remember that we are using alpha channel, we'll need to create a proper
1537     // mask in UngetRawData()
1538     M_BITMAPDATA->UseAlpha( true );
1539 }