src/mac/carbon/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/bitmap.cpp
   3 // Purpose:     wxBitmap
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/bitmap.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/log.h"
  18     #include "wx/dcmemory.h"
  19     #include "wx/icon.h"
  20 #endif
  21
  22 #include "wx/image.h"
  23 #include "wx/metafile.h"
  24 #include "wx/xpmdecod.h"
  25
  26 #include "wx/rawbmp.h"
  27
  28 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
  29 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
  30 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject)
  31
  32 #ifdef __DARWIN__
  33     #include <ApplicationServices/ApplicationServices.h>
  34 #else
  35     #include <PictUtils.h>
  36 #endif
  37
  38 #include "wx/mac/uma.h"
  39
  40 // Implementation Notes
  41 // --------------------
  42 //
  43 // we are always working with a 32 bit deep pixel buffer
  44 // under QuickDraw its alpha parts are going to be ignored in the GWorld,
  45 // therefore we have a separate GWorld there for blitting the mask in
  46
  47 // under Quartz then content is transformed into a CGImageRef representing the same data
  48 // which can be transferred to the GPU by the OS for fast rendering
  49
  50 // we don't dare use premultiplied alpha yet
  51 #define wxMAC_USE_PREMULTIPLIED_ALPHA 0
  52
  53 #if wxUSE_BMPBUTTON
  54
  55 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
  56 {
  57     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
  58     if ( bitmap.Ok() )
  59     {
  60         wxBitmapRefData * bmap = bitmap.GetBitmapData() ;
  61         if ( bmap == NULL )
  62             return ;
  63
  64         if ( ( bmap->HasNativeSize() && forceType == 0 ) || forceType == kControlContentIconRef )
  65         {
  66             wxBitmap scaleBmp ;
  67             wxBitmapRefData* bmp = bmap ;
  68
  69             if ( !bmap->HasNativeSize() )
  70             {
  71                 // as PICT conversion will only result in a 16x16 icon, let's attempt
  72                 // a few scales for better results
  73
  74                 int w = bitmap.GetWidth() ;
  75                 int h = bitmap.GetHeight() ;
  76                 int sz = wxMax( w , h ) ;
  77                 if ( sz == 24 || sz == 64 )
  78                 {
  79                     scaleBmp = wxBitmap( bitmap.ConvertToImage().Scale( w * 2 , h * 2 ) ) ;
  80                     bmp = scaleBmp.GetBitmapData() ;
  81                 }
  82             }
  83
  84             info->contentType = kControlContentIconRef ;
  85             info->u.iconRef = bmp->GetIconRef() ;
  86             AcquireIconRef( info->u.iconRef ) ;
  87         }
  88 #if defined( __WXMAC_OSX__ ) && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
  89         else if ( forceType == kControlContentCGImageRef )
  90         {
  91             info->contentType = kControlContentCGImageRef ;
  92             info->u.imageRef = (CGImageRef) bmap->CGImageCreate() ;
  93         }
  94 #endif
  95         else
  96         {
  97             info->contentType = kControlContentPictHandle ;
  98             info->u.picture = bmap->GetPictHandle() ;
  99         }
 100     }
 101 }
 102
 103 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
 104 {
 105     if ( info->contentType == kControlContentIconRef )
 106     {
 107         ReleaseIconRef( info->u.iconRef ) ;
 108     }
 109     else if ( info->contentType == kControlNoContent )
 110     {
 111         // there's no bitmap at all, fall through silently
 112     }
 113     else if ( info->contentType == kControlContentPictHandle )
 114     {
 115         // owned by the bitmap, no release here
 116     }
 117 #if defined( __WXMAC_OSX__ ) && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
 118     else if ( info->contentType == kControlContentCGImageRef )
 119     {
 120         CGImageRelease( info->u.imageRef ) ;
 121     }
 122 #endif
 123     else
 124     {
 125         wxFAIL_MSG(wxT("Unexpected bitmap type") ) ;
 126     }
 127 }
 128
 129 #endif //wxUSE_BMPBUTTON
 130
 131 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
 132
 133 void wxBitmapRefData::Init()
 134 {
 135     m_width = 0 ;
 136     m_height = 0 ;
 137     m_depth = 0 ;
 138     m_ok = false ;
 139     m_bitmapMask = NULL ;
 140
 141 #ifdef __WXMAC_OSX__
 142     m_cgImageRef = NULL ;
 143 #endif
 144
 145     m_iconRef = NULL ;
 146     m_pictHandle = NULL ;
 147     m_hBitmap = NULL ;
 148     m_hMaskBitmap = NULL;
 149     m_maskBytesPerRow = 0 ;
 150
 151     m_rawAccessCount = 0 ;
 152     m_hasAlpha = false;
 153 }
 154
 155 wxBitmapRefData::wxBitmapRefData()
 156 {
 157     Init() ;
 158 }
 159
 160 wxBitmapRefData::wxBitmapRefData( int w , int h , int d )
 161 {
 162     Init() ;
 163     Create( w , h , d ) ;
 164 }
 165
 166 bool wxBitmapRefData::Create( int w , int h , int d )
 167 {
 168     m_width = w ;
 169     m_height = h ;
 170     m_depth = d ;
 171
 172     m_bytesPerRow = w * 4 ;
 173     size_t size = m_bytesPerRow * h ;
 174     void* data = m_memBuf.GetWriteBuf( size ) ;
 175     memset( data , 0 , size ) ;
 176     m_memBuf.UngetWriteBuf( size ) ;
 177
 178     m_hBitmap = NULL ;
 179     Rect rect = { 0 , 0 , m_height , m_width } ;
 180     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 181         (char*) data , m_bytesPerRow ) ) ;
 182     wxASSERT_MSG( m_hBitmap , wxT("Unable to create GWorld context") ) ;
 183
 184     m_ok = ( m_hBitmap != NULL ) ;
 185
 186     return m_ok ;
 187 }
 188
 189 void wxBitmapRefData::UseAlpha( bool use )
 190 {
 191     if ( m_hasAlpha == use )
 192         return ;
 193
 194     m_hasAlpha = use ;
 195     if ( m_hasAlpha )
 196     {
 197         wxASSERT( m_hMaskBitmap == NULL ) ;
 198
 199         int width = GetWidth() ;
 200         int height = GetHeight() ;
 201         m_maskBytesPerRow = ( width * 4 + 3 ) & 0xFFFFFFC ;
 202         size_t size = height * m_maskBytesPerRow ;
 203         unsigned char * data = (unsigned char * ) m_maskMemBuf.GetWriteBuf( size ) ;
 204         wxASSERT( data != NULL ) ;
 205
 206         memset( data , 0 , size ) ;
 207         Rect rect = { 0 , 0 , height , width } ;
 208         verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hMaskBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 209             (char*) data , m_maskBytesPerRow ) ) ;
 210         wxASSERT_MSG( m_hMaskBitmap , wxT("Unable to create GWorld context for alpha mask") ) ;
 211         m_maskMemBuf.UngetWriteBuf(size) ;
 212
 213 #if !wxMAC_USE_CORE_GRAPHICS
 214         UpdateAlphaMask() ;
 215 #endif
 216     }
 217     else
 218     {
 219         DisposeGWorld( m_hMaskBitmap ) ;
 220         m_hMaskBitmap = NULL ;
 221         m_maskBytesPerRow = 0 ;
 222     }
 223 }
 224
 225 void *wxBitmapRefData::GetRawAccess() const
 226 {
 227     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 228     return m_memBuf.GetData() ;
 229 }
 230
 231 void *wxBitmapRefData::BeginRawAccess()
 232 {
 233     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") ) ;
 234     wxASSERT( m_rawAccessCount == 0 ) ;
 235     wxASSERT_MSG( m_pictHandle == NULL && m_iconRef == NULL ,
 236         wxT("Currently, modifing bitmaps that are used in controls already is not supported") ) ;
 237
 238     ++m_rawAccessCount ;
 239
 240 #ifdef __WXMAC_OSX__
 241     // we must destroy an existing cached image, as
 242     // the bitmap data may change now
 243     if ( m_cgImageRef )
 244     {
 245         CGImageRelease( m_cgImageRef ) ;
 246         m_cgImageRef = NULL ;
 247     }
 248 #endif
 249
 250     return m_memBuf.GetData() ;
 251 }
 252
 253 void wxBitmapRefData::EndRawAccess()
 254 {
 255     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 256     wxASSERT( m_rawAccessCount == 1 ) ;
 257
 258     --m_rawAccessCount ;
 259
 260 #if !wxMAC_USE_CORE_GRAPHICS
 261     UpdateAlphaMask() ;
 262 #endif
 263 }
 264
 265 bool wxBitmapRefData::HasNativeSize()
 266 {
 267     int w = GetWidth() ;
 268     int h = GetHeight() ;
 269     int sz = wxMax( w , h ) ;
 270
 271     return ( sz == 128 || sz == 48 || sz == 32 || sz == 16 );
 272 }
 273
 274 IconRef wxBitmapRefData::GetIconRef()
 275 {
 276     if ( m_iconRef == NULL )
 277     {
 278         // Create Icon Family Handle
 279
 280         IconFamilyHandle iconFamily = NULL ;
 281
 282 #ifdef WORDS_BIGENDIAN
 283         iconFamily = (IconFamilyHandle) NewHandle( 8 ) ;
 284         (**iconFamily).resourceType = kIconFamilyType ;
 285         (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
 286 #else
 287         // test this solution on big endian as well
 288         iconFamily = (IconFamilyHandle) NewHandle( 0 ) ;
 289 #endif
 290
 291         int w = GetWidth() ;
 292         int h = GetHeight() ;
 293         int sz = wxMax( w , h ) ;
 294
 295         OSType dataType = 0 ;
 296         OSType maskType = 0 ;
 297
 298         switch (sz)
 299         {
 300             case 128:
 301                 dataType = kThumbnail32BitData ;
 302                 maskType = kThumbnail8BitMask ;
 303                 break;
 304
 305             case 48:
 306                 dataType = kHuge32BitData ;
 307                 maskType = kHuge8BitMask ;
 308                 break;
 309
 310             case 32:
 311                 dataType = kLarge32BitData ;
 312                 maskType = kLarge8BitMask ;
 313                 break;
 314
 315             case 16:
 316                 dataType = kSmall32BitData ;
 317                 maskType = kSmall8BitMask ;
 318                 break;
 319
 320             default:
 321                 break;
 322         }
 323
 324         if ( dataType != 0 )
 325         {
 326             // setup the header properly
 327
 328             Handle data = NULL ;
 329             Handle maskdata = NULL ;
 330             unsigned char * maskptr = NULL ;
 331             unsigned char * ptr = NULL ;
 332             size_t datasize, masksize ;
 333
 334             datasize = sz * sz * 4 ;
 335             data = NewHandle( datasize ) ;
 336             HLock( data ) ;
 337             ptr = (unsigned char*) *data ;
 338             memset( ptr , 0, datasize ) ;
 339
 340             masksize = sz * sz ;
 341             maskdata = NewHandle( masksize ) ;
 342             HLock( maskdata ) ;
 343             maskptr = (unsigned char*) *maskdata ;
 344             memset( maskptr , 0 , masksize ) ;
 345
 346             bool hasAlpha = HasAlpha() ;
 347             wxMask *mask = m_bitmapMask ;
 348             unsigned char * source = (unsigned char*) GetRawAccess() ;
 349             unsigned char * masksource = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 350
 351             for ( int y = 0 ; y < h ; ++y )
 352             {
 353                 unsigned char * dest = ptr + y * sz * 4 ;
 354                 unsigned char * maskdest = maskptr + y * sz ;
 355                 unsigned char a, r, g, b;
 356
 357                 for ( int x = 0 ; x < w ; ++x )
 358                 {
 359                     a = *source ++ ;
 360                     r = *source ++ ;
 361                     g = *source ++ ;
 362                     b = *source ++ ;
 363
 364                     *dest++ = 0 ;
 365                     *dest++ = r ;
 366                     *dest++ = g ;
 367                     *dest++ = b ;
 368
 369                     if ( mask )
 370                     {
 371                         *maskdest++ = 0xFF - *masksource++ ;
 372                         masksource++ ;
 373                         masksource++ ;
 374                         masksource++ ;
 375                     }
 376                     else if ( hasAlpha )
 377                         *maskdest++ = a ;
 378                     else
 379                         *maskdest++ = 0xFF ;
 380                 }
 381             }
 382
 383             OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 384             wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 385
 386             err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 387             wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 388
 389             HUnlock( data ) ;
 390             HUnlock( maskdata ) ;
 391             DisposeHandle( data ) ;
 392             DisposeHandle( maskdata ) ;
 393         }
 394         else
 395         {
 396             PicHandle pic = GetPictHandle() ;
 397             SetIconFamilyData( iconFamily, 'PICT' , (Handle) pic ) ;
 398         }
 399         // transform into IconRef
 400 #ifdef __WXMAC_OSX__
 401         // cleaner version existing from 10.3 upwards
 402         HLock((Handle) iconFamily);
 403         OSStatus err = GetIconRefFromIconFamilyPtr( *iconFamily, GetHandleSize((Handle) iconFamily), &m_iconRef );
 404         HUnlock((Handle) iconFamily);
 405         wxASSERT_MSG( err == noErr , wxT("Error when constructing icon ref") );
 406 #else
 407         static int iconCounter = 2 ;
 408
 409         OSStatus err = RegisterIconRefFromIconFamily( 'WXNG' , (OSType) iconCounter, iconFamily, &m_iconRef ) ;
 410         wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 411
 412         // we have to retain a reference, as Unregister will decrement it
 413         AcquireIconRef( m_iconRef ) ;
 414         UnregisterIconRef( 'WXNG' , (OSType) iconCounter ) ;
 415         ++iconCounter ;
 416 #endif
 417         DisposeHandle( (Handle) iconFamily ) ;
 418     }
 419
 420     return m_iconRef ;
 421 }
 422
 423 PicHandle wxBitmapRefData::GetPictHandle()
 424 {
 425     if ( m_pictHandle == NULL )
 426     {
 427         CGrafPtr origPort = NULL ;
 428         GDHandle origDev = NULL ;
 429         GWorldPtr wp = NULL ;
 430         GWorldPtr mask = NULL ;
 431         int height = GetHeight() ;
 432         int width = GetWidth() ;
 433
 434         Rect rect = { 0 , 0 , height , width } ;
 435         RgnHandle clipRgn = NULL ;
 436
 437         GetGWorld( &origPort , &origDev ) ;
 438         wp = GetHBITMAP( &mask ) ;
 439
 440         if ( mask )
 441         {
 442             GWorldPtr monoworld ;
 443             clipRgn = NewRgn() ;
 444             OSStatus err = NewGWorld( &monoworld , 1 , &rect , NULL , NULL , 0 ) ;
 445             verify_noerr(err) ;
 446             LockPixels( GetGWorldPixMap( monoworld ) ) ;
 447             LockPixels( GetGWorldPixMap( mask ) ) ;
 448             SetGWorld( monoworld , NULL ) ;
 449
 450             RGBColor white = { 0xffff , 0xffff , 0xffff } ;
 451             RGBColor black = { 0x0000 , 0x0000 , 0x0000 } ;
 452             RGBForeColor( &black ) ;
 453             RGBBackColor( &white ) ;
 454
 455             CopyBits(GetPortBitMapForCopyBits(mask),
 456                     GetPortBitMapForCopyBits(monoworld),
 457                     &rect,
 458                     &rect,
 459                     srcCopy, NULL);
 460             BitMapToRegion( clipRgn , (BitMap*) *GetGWorldPixMap( monoworld ) ) ;
 461
 462             UnlockPixels( GetGWorldPixMap( monoworld ) ) ;
 463             UnlockPixels( GetGWorldPixMap( mask ) ) ;
 464             DisposeGWorld( monoworld ) ;
 465         }
 466
 467         SetGWorld( wp , NULL ) ;
 468         Rect portRect ;
 469         GetPortBounds( wp , &portRect ) ;
 470         m_pictHandle = OpenPicture(&portRect);
 471
 472         if (m_pictHandle)
 473         {
 474             RGBColor white = { 0xffff , 0xffff , 0xffff } ;
 475             RGBColor black = { 0x0000 , 0x0000 , 0x0000 } ;
 476
 477             RGBForeColor( &black ) ;
 478             RGBBackColor( &white ) ;
 479
 480             if ( clipRgn )
 481                 SetClip( clipRgn ) ;
 482
 483             LockPixels( GetGWorldPixMap( wp ) ) ;
 484             CopyBits(GetPortBitMapForCopyBits(wp),
 485                     GetPortBitMapForCopyBits(wp),
 486                     &portRect,
 487                     &portRect,
 488                     srcCopy,clipRgn);
 489             UnlockPixels( GetGWorldPixMap( wp ) ) ;
 490             ClosePicture();
 491         }
 492
 493         SetGWorld( origPort , origDev ) ;
 494         if ( clipRgn )
 495             DisposeRgn( clipRgn ) ;
 496     }
 497
 498     return m_pictHandle ;
 499 }
 500
 501 #ifdef __WXMAC_OSX__
 502 void wxMacMemoryBufferReleaseProc(void *info, const void *data, size_t size)
 503 {
 504     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
 505
 506     wxASSERT( data == membuf->GetData() ) ;
 507
 508     delete membuf ;
 509 }
 510
 511 CGImageRef wxBitmapRefData::CGImageCreate() const
 512 {
 513     wxASSERT( m_ok ) ;
 514     wxASSERT( m_rawAccessCount >= 0 ) ;
 515     CGImageRef image ;
 516     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 517     {
 518         size_t imageSize = m_width * m_height * 4 ;
 519         void * dataBuffer = m_memBuf.GetData() ;
 520         int w = m_width ;
 521         int h = m_height ;
 522         CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 523         wxMemoryBuffer* membuf = NULL ;
 524
 525         if ( m_bitmapMask )
 526         {
 527             alphaInfo = kCGImageAlphaFirst ;
 528             membuf = new wxMemoryBuffer( imageSize ) ;
 529             memcpy( membuf->GetData() , dataBuffer , imageSize ) ;
 530             unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 531             int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 532             unsigned char *destalpha = (unsigned char *) membuf->GetData() ;
 533             for ( int y = 0 ; y < h ; ++y , sourcemaskstart += maskrowbytes)
 534             {
 535                 unsigned char *sourcemask = sourcemaskstart ;
 536                 for ( int x = 0 ; x < w ; ++x , sourcemask += 4 , destalpha += 4 )
 537                 {
 538                     *destalpha = 0xFF - *sourcemask ;
 539                 }
 540             }
 541         }
 542         else
 543         {
 544             if ( m_hasAlpha )
 545             {
 546 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 547                 alphaInfo = kCGImageAlphaPremultipliedFirst ;
 548 #else
 549                 alphaInfo = kCGImageAlphaFirst ;
 550 #endif
 551             }
 552
 553             membuf = new wxMemoryBuffer( m_memBuf ) ;
 554         }
 555
 556         CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 557         CGDataProviderRef dataProvider =
 558             CGDataProviderCreateWithData(
 559                 membuf , (const void *)membuf->GetData() , imageSize,
 560                 wxMacMemoryBufferReleaseProc );
 561         image =
 562             ::CGImageCreate(
 563                 w, h, 8 , 32 , 4 * m_width , colorSpace, alphaInfo ,
 564                 dataProvider, NULL , false , kCGRenderingIntentDefault );
 565         CGDataProviderRelease( dataProvider);
 566     }
 567     else
 568     {
 569         image = m_cgImageRef ;
 570         CGImageRetain( image ) ;
 571     }
 572
 573     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 574     {
 575         // we keep it for later use
 576         m_cgImageRef = image ;
 577         CGImageRetain( image ) ;
 578     }
 579
 580     return image ;
 581 }
 582 #endif
 583
 584 GWorldPtr wxBitmapRefData::GetHBITMAP(GWorldPtr* mask) const
 585 {
 586     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 587     if ( mask )
 588     {
 589         *mask = NULL ;
 590         if ( m_bitmapMask )
 591         {
 592             *mask = (GWorldPtr) m_bitmapMask->GetHBITMAP() ;
 593         }
 594         else if ( m_hasAlpha )
 595         {
 596 #if !wxMAC_USE_CORE_GRAPHICS
 597             if ( m_rawAccessCount > 0 )
 598                 UpdateAlphaMask() ;
 599 #else
 600             // this structure is not kept in synch when using CG, so if something
 601             // is really accessing the GrafPorts, we have to sync it
 602             UpdateAlphaMask() ;
 603 #endif
 604
 605             *mask = m_hMaskBitmap ;
 606         }
 607     }
 608
 609     return m_hBitmap ;
 610 }
 611
 612 void wxBitmapRefData::UpdateAlphaMask() const
 613 {
 614     if ( m_hasAlpha )
 615     {
 616         unsigned char *sourcemask = (unsigned char *) GetRawAccess() ;
 617         unsigned char *destalphabase = (unsigned char *) m_maskMemBuf.GetData() ;
 618
 619         int h = GetHeight() ;
 620         int w = GetWidth() ;
 621
 622         for ( int y = 0 ; y < h ; ++y , destalphabase += m_maskBytesPerRow )
 623         {
 624             unsigned char* destalpha = destalphabase ;
 625
 626             for ( int x = 0 ; x < w ; ++x , sourcemask += 4 )
 627             {
 628                 // we must have 24 bit depth for non quartz smooth alpha
 629                 *destalpha++ = 255 ;
 630                 *destalpha++ = 255  - *sourcemask ;
 631                 *destalpha++ = 255  - *sourcemask ;
 632                 *destalpha++ = 255  - *sourcemask ;
 633             }
 634         }
 635     }
 636 }
 637
 638 void wxBitmapRefData::Free()
 639 {
 640     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 641
 642 #ifdef __WXMAC_OSX__
 643     if ( m_cgImageRef )
 644     {
 645         CGImageRelease( m_cgImageRef ) ;
 646         m_cgImageRef = NULL ;
 647     }
 648 #endif
 649
 650     if ( m_iconRef )
 651     {
 652         ReleaseIconRef( m_iconRef ) ;
 653         m_iconRef = NULL ;
 654     }
 655
 656     if ( m_pictHandle )
 657     {
 658         KillPicture( m_pictHandle ) ;
 659         m_pictHandle = NULL ;
 660     }
 661
 662     if ( m_hBitmap )
 663     {
 664         DisposeGWorld( MAC_WXHBITMAP(m_hBitmap) ) ;
 665         m_hBitmap = NULL ;
 666     }
 667
 668     if ( m_hMaskBitmap )
 669     {
 670         DisposeGWorld( MAC_WXHBITMAP(m_hMaskBitmap) ) ;
 671         m_hMaskBitmap = NULL ;
 672     }
 673
 674     if (m_bitmapMask)
 675     {
 676         delete m_bitmapMask;
 677         m_bitmapMask = NULL;
 678     }
 679 }
 680
 681 wxBitmapRefData::~wxBitmapRefData()
 682 {
 683     Free() ;
 684 }
 685
 686 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 687 {
 688     bool created = false ;
 689     int w = icon.GetWidth() ;
 690     int h = icon.GetHeight() ;
 691
 692     Create( icon.GetWidth() , icon.GetHeight() ) ;
 693
 694     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 695     {
 696         IconFamilyHandle iconFamily = NULL ;
 697         Handle imagehandle = NewHandle( 0 ) ;
 698         Handle maskhandle = NewHandle( 0 ) ;
 699
 700         OSType maskType = 0;
 701         OSType dataType = 0;
 702         IconSelectorValue selector = 0 ;
 703
 704         switch (w)
 705         {
 706             case 128:
 707                 dataType = kThumbnail32BitData ;
 708                 maskType = kThumbnail8BitMask ;
 709                 selector = kSelectorAllAvailableData ;
 710                 break;
 711
 712             case 48:
 713                 dataType = kHuge32BitData ;
 714                 maskType = kHuge8BitMask ;
 715                 selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 716                 break;
 717
 718             case 32:
 719                 dataType = kLarge32BitData ;
 720                 maskType = kLarge8BitMask ;
 721                 selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 722                 break;
 723
 724             case 16:
 725                 dataType = kSmall32BitData ;
 726                 maskType = kSmall8BitMask ;
 727                 selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 728                 break;
 729
 730             default:
 731                 break;
 732         }
 733
 734         OSStatus err = IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ;
 735
 736         err = GetIconFamilyData( iconFamily , dataType , imagehandle ) ;
 737         err = GetIconFamilyData( iconFamily , maskType , maskhandle ) ;
 738         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 739         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 740
 741         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 742         {
 743             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 744             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 745
 746             UseAlpha() ;
 747
 748             unsigned char *source = (unsigned char *) *imagehandle ;
 749             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 750             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 751
 752             for ( int y = 0 ; y < h ; ++y )
 753             {
 754                 for ( int x = 0 ; x < w ; ++x )
 755                 {
 756                     *destination++ = *sourcemask++ ;
 757                     source++ ;
 758                     *destination++ = *source++ ;
 759                     *destination++ = *source++ ;
 760                     *destination++ = *source++ ;
 761                 }
 762             }
 763
 764             EndRawAccess() ;
 765             DisposeHandle( imagehandle ) ;
 766             DisposeHandle( maskhandle ) ;
 767             created = true ;
 768         }
 769
 770         DisposeHandle( (Handle) iconFamily ) ;
 771     }
 772
 773     if ( !created )
 774     {
 775         wxMemoryDC dc ;
 776         dc.SelectObject( *this ) ;
 777         dc.DrawIcon( icon , 0 , 0 ) ;
 778         dc.SelectObject( wxNullBitmap ) ;
 779     }
 780
 781     return true;
 782 }
 783
 784 wxBitmap::wxBitmap()
 785 {
 786 }
 787
 788 wxBitmap::~wxBitmap()
 789 {
 790 }
 791
 792 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 793 {
 794     m_refData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 795
 796     if ( no_bits == 1 )
 797     {
 798         int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 799         if ( the_width % (sizeof(unsigned char) * 8) )
 800             linesize += sizeof(unsigned char);
 801
 802         unsigned char* linestart = (unsigned char*) bits ;
 803         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 804
 805         for ( int y = 0 ; y < the_height ; ++y , linestart += linesize )
 806         {
 807             int index, bit, mask;
 808
 809             for ( int x = 0 ; x < the_width ; ++x )
 810             {
 811                 index = x / 8 ;
 812                 bit = x % 8 ;
 813                 mask = 1 << bit ;
 814
 815                 if ( !(linestart[index] & mask ) )
 816                 {
 817                     *destination++ = 0xFF ;
 818                     *destination++ = 0 ;
 819                     *destination++ = 0 ;
 820                     *destination++ = 0 ;
 821                 }
 822                 else
 823                 {
 824                     *destination++ = 0xFF ;
 825                     *destination++ = 0xFF ;
 826                     *destination++ = 0xFF ;
 827                     *destination++ = 0xFF ;
 828                 }
 829             }
 830         }
 831
 832         EndRawAccess() ;
 833     }
 834     else
 835     {
 836         wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 837     }
 838 }
 839
 840 wxBitmap::wxBitmap(int w, int h, int d)
 841 {
 842     (void)Create(w, h, d);
 843 }
 844
 845 wxBitmap::wxBitmap(void *data, wxBitmapType type, int width, int height, int depth)
 846 {
 847     (void) Create(data, type, width, height, depth);
 848 }
 849
 850 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 851 {
 852     LoadFile(filename, type);
 853 }
 854
 855 wxBitmap::wxBitmap(const char **bits)
 856 {
 857     (void) CreateFromXpm(bits);
 858 }
 859
 860 wxBitmap::wxBitmap(char **bits)
 861 {
 862     (void) CreateFromXpm((const char **)bits);
 863 }
 864
 865 void * wxBitmap::GetRawAccess() const
 866 {
 867     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 868
 869     return M_BITMAPDATA->GetRawAccess() ;
 870 }
 871
 872 void * wxBitmap::BeginRawAccess()
 873 {
 874     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 875
 876     return M_BITMAPDATA->BeginRawAccess() ;
 877 }
 878
 879 void wxBitmap::EndRawAccess()
 880 {
 881     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 882
 883     M_BITMAPDATA->EndRawAccess() ;
 884 }
 885
 886 bool wxBitmap::CreateFromXpm(const char **bits)
 887 {
 888 #if wxUSE_IMAGE
 889     wxCHECK_MSG( bits != NULL, false, wxT("invalid bitmap data") );
 890
 891     wxXPMDecoder decoder;
 892     wxImage img = decoder.ReadData(bits);
 893     wxCHECK_MSG( img.Ok(), false, wxT("invalid bitmap data") );
 894
 895     *this = wxBitmap(img);
 896
 897     return true;
 898 #else
 899
 900     return false;
 901 #endif
 902 }
 903
 904 #ifdef __WXMAC_OSX__
 905 WXCGIMAGEREF wxBitmap::CGImageCreate() const
 906 {
 907     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 908
 909     return M_BITMAPDATA->CGImageCreate() ;
 910 }
 911 #endif
 912
 913 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
 914 {
 915     wxCHECK_MSG( Ok() &&
 916                 (rect.x >= 0) && (rect.y >= 0) &&
 917                 (rect.x+rect.width <= GetWidth()) &&
 918                 (rect.y+rect.height <= GetHeight()),
 919                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 920
 921     wxBitmap ret( rect.width, rect.height, GetDepth() );
 922     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 923
 924     int sourcewidth = GetWidth() ;
 925     int destwidth = rect.width ;
 926     int destheight = rect.height ;
 927
 928     {
 929         unsigned char *sourcedata = (unsigned char*) GetRawAccess() ;
 930         unsigned char *destdata = (unsigned char*) ret.BeginRawAccess() ;
 931         wxASSERT( (sourcedata != NULL) && (destdata != NULL) ) ;
 932
 933         int sourcelinesize = sourcewidth * 4 ;
 934         int destlinesize = destwidth * 4 ;
 935         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
 936         unsigned char *dest = destdata ;
 937
 938         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 939         {
 940             memcpy( dest , source , destlinesize ) ;
 941         }
 942     }
 943
 944     ret.EndRawAccess() ;
 945
 946     if ( M_BITMAPDATA->m_bitmapMask )
 947     {
 948         wxMemoryBuffer maskbuf ;
 949         int rowBytes = ( destwidth * 4 + 3 ) & 0xFFFFFFC ;
 950         size_t maskbufsize = rowBytes * destheight ;
 951
 952         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow() ;
 953         int destlinesize = rowBytes ;
 954
 955         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
 956         unsigned char *destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
 957         wxASSERT( (source != NULL) && (destdata != NULL) ) ;
 958
 959         source += rect.x * 4 + rect.y * sourcelinesize ;
 960         unsigned char *dest = destdata ;
 961
 962         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 963         {
 964             memcpy( dest , source , destlinesize ) ;
 965         }
 966
 967         maskbuf.UngetWriteBuf( maskbufsize ) ;
 968         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
 969     }
 970     else if ( HasAlpha() )
 971         ret.UseAlpha() ;
 972
 973     return ret;
 974 }
 975
 976 bool wxBitmap::Create(int w, int h, int d)
 977 {
 978     UnRef();
 979
 980     if ( d < 0 )
 981         d = wxDisplayDepth() ;
 982
 983     m_refData = new wxBitmapRefData( w , h , d );
 984
 985     return M_BITMAPDATA->Ok() ;
 986 }
 987
 988 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
 989 {
 990     UnRef();
 991
 992     wxBitmapHandler *handler = FindHandler(type);
 993
 994     if ( handler )
 995     {
 996         m_refData = new wxBitmapRefData;
 997
 998         return handler->LoadFile(this, filename, type, -1, -1);
 999     }
1000     else
1001     {
1002 #if wxUSE_IMAGE
1003         wxImage loadimage(filename, type);
1004         if (loadimage.Ok())
1005         {
1006             *this = loadimage;
1007
1008             return true;
1009         }
1010 #endif
1011     }
1012
1013     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1014
1015     return false;
1016 }
1017
1018 bool wxBitmap::Create(void *data, wxBitmapType type, int width, int height, int depth)
1019 {
1020     UnRef();
1021
1022     m_refData = new wxBitmapRefData;
1023
1024     wxBitmapHandler *handler = FindHandler(type);
1025
1026     if ( handler == NULL )
1027     {
1028         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1029
1030         return false;
1031     }
1032
1033     return handler->Create(this, data, type, width, height, depth);
1034 }
1035
1036 #if wxUSE_IMAGE
1037
1038 wxBitmap::wxBitmap(const wxImage& image, int depth)
1039 {
1040     wxCHECK_RET( image.Ok(), wxT("invalid image") );
1041
1042     // width and height of the device-dependent bitmap
1043     int width = image.GetWidth();
1044     int height = image.GetHeight();
1045
1046     m_refData = new wxBitmapRefData( width , height , depth ) ;
1047
1048     // Create picture
1049
1050     bool hasAlpha = false ;
1051
1052     if ( image.HasMask() )
1053     {
1054         // takes precedence, don't mix with alpha info
1055     }
1056     else
1057     {
1058         hasAlpha = image.HasAlpha() ;
1059     }
1060
1061     if ( hasAlpha )
1062         UseAlpha() ;
1063
1064     unsigned char* destination = (unsigned char*) BeginRawAccess() ;
1065     register unsigned char* data = image.GetData();
1066     const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
1067
1068     for (int y = 0; y < height; y++)
1069     {
1070         for (int x = 0; x < width; x++)
1071         {
1072             if ( hasAlpha )
1073             {
1074                 const unsigned char a = *alpha++;
1075                 *destination++ = a ;
1076
1077 #if wxMAC_USE_PREMULTIPLIED_ALPHA
1078                 *destination++ = ((*data++) * a + 127) / 255 ;
1079                 *destination++ = ((*data++) * a + 127) / 255 ;
1080                 *destination++ = ((*data++) * a + 127) / 255 ;
1081 #else
1082                 *destination++ = *data++ ;
1083                 *destination++ = *data++ ;
1084                 *destination++ = *data++ ;
1085 #endif
1086             }
1087             else
1088             {
1089                 *destination++ = 0xFF ;
1090                 *destination++ = *data++ ;
1091                 *destination++ = *data++ ;
1092                 *destination++ = *data++ ;
1093             }
1094         }
1095     }
1096
1097     EndRawAccess() ;
1098     if ( image.HasMask() )
1099         SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
1100 }
1101
1102 wxImage wxBitmap::ConvertToImage() const
1103 {
1104     wxImage image;
1105
1106     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
1107
1108     // create an wxImage object
1109     int width = GetWidth();
1110     int height = GetHeight();
1111     image.Create( width, height );
1112
1113     unsigned char *data = image.GetData();
1114     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
1115
1116     unsigned char* source = (unsigned char*) GetRawAccess() ;
1117
1118     bool hasAlpha = false ;
1119     bool hasMask = false ;
1120     int maskBytesPerRow = 0 ;
1121     unsigned char *alpha = NULL ;
1122     unsigned char *mask = NULL ;
1123
1124     if ( HasAlpha() )
1125         hasAlpha = true ;
1126
1127     if ( GetMask() )
1128     {
1129         hasMask = true ;
1130         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1131         maskBytesPerRow = GetMask()->GetBytesPerRow() ;
1132     }
1133
1134     if ( hasAlpha )
1135     {
1136         image.SetAlpha() ;
1137         alpha = image.GetAlpha() ;
1138     }
1139
1140     int index = 0;
1141
1142     // The following masking algorithm is the same as well in msw/gtk:
1143     // the colour used as transparent one in wxImage and the one it is
1144     // replaced with when it actually occurs in the bitmap
1145     static const int MASK_RED = 1;
1146     static const int MASK_GREEN = 2;
1147     static const int MASK_BLUE = 3;
1148     static const int MASK_BLUE_REPLACEMENT = 2;
1149
1150     for (int yy = 0; yy < height; yy++ , mask += maskBytesPerRow )
1151     {
1152         unsigned char * maskp = mask ;
1153         unsigned char a, r, g, b;
1154         long color;
1155
1156         for (int xx = 0; xx < width; xx++)
1157         {
1158             color = *((long*) source) ;
1159 #ifdef WORDS_BIGENDIAN
1160             a = ((color&0xFF000000) >> 24) ;
1161             r = ((color&0x00FF0000) >> 16) ;
1162             g = ((color&0x0000FF00) >> 8) ;
1163             b = (color&0x000000FF);
1164 #else
1165             b = ((color&0xFF000000) >> 24) ;
1166             g = ((color&0x00FF0000) >> 16) ;
1167             r = ((color&0x0000FF00) >> 8) ;
1168             a = (color&0x000000FF);
1169 #endif
1170             if ( hasMask )
1171             {
1172                 if ( *maskp++ == 0xFF )
1173                 {
1174                     r = MASK_RED ;
1175                     g = MASK_GREEN ;
1176                     b = MASK_BLUE ;
1177                 }
1178                 else if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1179                     b = MASK_BLUE_REPLACEMENT ;
1180
1181                 maskp++ ;
1182                 maskp++ ;
1183                 maskp++ ;
1184             }
1185             else if ( hasAlpha )
1186                 *alpha++ = a ;
1187
1188             data[index    ] = r ;
1189             data[index + 1] = g ;
1190             data[index + 2] = b ;
1191
1192             index += 3;
1193             source += 4 ;
1194         }
1195     }
1196
1197     if ( hasMask )
1198         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1199
1200     return image;
1201 }
1202
1203 #endif //wxUSE_IMAGE
1204
1205 bool wxBitmap::SaveFile( const wxString& filename,
1206     wxBitmapType type, const wxPalette *palette ) const
1207 {
1208     bool success = false;
1209     wxBitmapHandler *handler = FindHandler(type);
1210
1211     if ( handler )
1212     {
1213         success = handler->SaveFile(this, filename, type, palette);
1214     }
1215     else
1216     {
1217 #if wxUSE_IMAGE
1218         wxImage image = ConvertToImage();
1219         success = image.SaveFile(filename, type);
1220 #else
1221         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1222 #endif
1223     }
1224
1225     return success;
1226 }
1227
1228 bool wxBitmap::Ok() const
1229 {
1230    return (M_BITMAPDATA && M_BITMAPDATA->Ok());
1231 }
1232
1233 int wxBitmap::GetHeight() const
1234 {
1235    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1236
1237    return M_BITMAPDATA->GetHeight();
1238 }
1239
1240 int wxBitmap::GetWidth() const
1241 {
1242    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1243
1244    return M_BITMAPDATA->GetWidth() ;
1245 }
1246
1247 int wxBitmap::GetDepth() const
1248 {
1249    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1250
1251    return M_BITMAPDATA->GetDepth();
1252 }
1253
1254 #if WXWIN_COMPATIBILITY_2_4
1255 int wxBitmap::GetQuality() const
1256 {
1257     return 0;
1258 }
1259
1260 void wxBitmap::SetQuality(int WXUNUSED(quality))
1261 {
1262 }
1263 #endif
1264
1265 wxMask *wxBitmap::GetMask() const
1266 {
1267    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1268
1269    return M_BITMAPDATA->m_bitmapMask;
1270 }
1271
1272 bool wxBitmap::HasAlpha() const
1273 {
1274    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1275
1276    return M_BITMAPDATA->HasAlpha() ;
1277 }
1278
1279 void wxBitmap::SetWidth(int w)
1280 {
1281     if (!M_BITMAPDATA)
1282         m_refData = new wxBitmapRefData;
1283
1284     M_BITMAPDATA->SetWidth(w);
1285 }
1286
1287 void wxBitmap::SetHeight(int h)
1288 {
1289     if (!M_BITMAPDATA)
1290         m_refData = new wxBitmapRefData;
1291
1292     M_BITMAPDATA->SetHeight(h);
1293 }
1294
1295 void wxBitmap::SetDepth(int d)
1296 {
1297     if (!M_BITMAPDATA)
1298         m_refData = new wxBitmapRefData;
1299
1300     M_BITMAPDATA->SetDepth(d);
1301 }
1302
1303 void wxBitmap::SetOk(bool isOk)
1304 {
1305     if (!M_BITMAPDATA)
1306         m_refData = new wxBitmapRefData;
1307
1308     M_BITMAPDATA->SetOk(isOk);
1309 }
1310
1311 #if wxUSE_PALETTE
1312 wxPalette *wxBitmap::GetPalette() const
1313 {
1314    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1315
1316    return &M_BITMAPDATA->m_bitmapPalette;
1317 }
1318
1319 void wxBitmap::SetPalette(const wxPalette& palette)
1320 {
1321     if (!M_BITMAPDATA)
1322         m_refData = new wxBitmapRefData;
1323
1324     M_BITMAPDATA->m_bitmapPalette = palette ;
1325 }
1326 #endif // wxUSE_PALETTE
1327
1328 void wxBitmap::SetMask(wxMask *mask)
1329 {
1330     if (!M_BITMAPDATA)
1331         m_refData = new wxBitmapRefData;
1332
1333     // Remove existing mask if there is one.
1334     delete M_BITMAPDATA->m_bitmapMask;
1335
1336     M_BITMAPDATA->m_bitmapMask = mask ;
1337 }
1338
1339 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1340 {
1341     return WXHBITMAP(M_BITMAPDATA->GetHBITMAP((GWorldPtr*)mask));
1342 }
1343
1344 // ----------------------------------------------------------------------------
1345 // wxMask
1346 // ----------------------------------------------------------------------------
1347
1348 wxMask::wxMask()
1349 {
1350     Init() ;
1351 }
1352
1353 // Construct a mask from a bitmap and a colour indicating
1354 // the transparent area
1355 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
1356 {
1357     Init() ;
1358     Create( bitmap, colour );
1359 }
1360
1361 // Construct a mask from a mono bitmap (copies the bitmap).
1362 wxMask::wxMask( const wxBitmap& bitmap )
1363 {
1364     Init() ;
1365     Create( bitmap );
1366 }
1367
1368 // Construct a mask from a mono bitmap (copies the bitmap).
1369
1370 wxMask::wxMask( const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1371 {
1372     Init() ;
1373     Create( data, width , height , bytesPerRow );
1374 }
1375
1376 wxMask::~wxMask()
1377 {
1378     if ( m_maskBitmap )
1379     {
1380         DisposeGWorld( (GWorldPtr)m_maskBitmap ) ;
1381         m_maskBitmap = NULL ;
1382     }
1383 }
1384
1385 void wxMask::Init()
1386 {
1387     m_width = m_height = m_bytesPerRow = 0 ;
1388     m_maskBitmap = NULL ;
1389 }
1390
1391 void *wxMask::GetRawAccess() const
1392 {
1393     return m_memBuf.GetData() ;
1394 }
1395
1396 // The default ColorTable for k8IndexedGrayPixelFormat in Intel appears to be broken, so we'll use an non-indexed
1397 // bitmap mask instead; in order to keep the code simple, the change applies to PowerPC implementations as well
1398
1399 void wxMask::RealizeNative()
1400 {
1401     if ( m_maskBitmap )
1402     {
1403        DisposeGWorld( (GWorldPtr)m_maskBitmap ) ;
1404        m_maskBitmap = NULL ;
1405     }
1406
1407     Rect rect = { 0 , 0 , m_height , m_width } ;
1408
1409     OSStatus err = NewGWorldFromPtr(
1410         (GWorldPtr*) &m_maskBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
1411         (char*) m_memBuf.GetData() , m_bytesPerRow ) ;
1412     verify_noerr( err ) ;
1413 }
1414
1415 // Create a mask from a mono bitmap (copies the bitmap).
1416
1417 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1418 {
1419     m_memBuf = data ;
1420     m_width = width ;
1421     m_height = height ;
1422     m_bytesPerRow = bytesPerRow ;
1423
1424     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1425
1426     RealizeNative() ;
1427
1428     return true ;
1429 }
1430
1431 // Create a mask from a mono bitmap (copies the bitmap).
1432 bool wxMask::Create(const wxBitmap& bitmap)
1433 {
1434     m_width = bitmap.GetWidth() ;
1435     m_height = bitmap.GetHeight() ;
1436     m_bytesPerRow = ( m_width * 4 + 3 ) & 0xFFFFFFC ;
1437
1438     size_t size = m_bytesPerRow * m_height ;
1439     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1440     wxASSERT( destdatabase != NULL ) ;
1441
1442     memset( destdatabase , 0 , size ) ;
1443     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1444
1445     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1446     {
1447         unsigned char *destdata = destdatabase ;
1448         unsigned char r, g, b;
1449
1450         for ( int x = 0 ; x < m_width ; ++x )
1451         {
1452             srcdata++ ;
1453             r = *srcdata++ ;
1454             g = *srcdata++ ;
1455             b = *srcdata++ ;
1456
1457             if ( ( r + g + b ) > 0x10 )
1458             {
1459                 *destdata++ = 0xFF ;
1460                 *destdata++ = 0xFF ;
1461                 *destdata++ = 0xFF ;
1462                 *destdata++ = 0xFF ;
1463             }
1464             else
1465             {
1466                 *destdata++ = 0x00 ;
1467                 *destdata++ = 0x00 ;
1468                 *destdata++ = 0x00 ;
1469                 *destdata++ = 0x00 ;
1470             }
1471         }
1472     }
1473
1474     m_memBuf.UngetWriteBuf( size ) ;
1475     RealizeNative() ;
1476
1477     return true;
1478 }
1479
1480 // Create a mask from a bitmap and a colour indicating
1481 // the transparent area
1482 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1483 {
1484     m_width = bitmap.GetWidth() ;
1485     m_height = bitmap.GetHeight() ;
1486     m_bytesPerRow = ( m_width * 4 + 3 ) & 0xFFFFFFC ;
1487
1488     size_t size = m_bytesPerRow * m_height ;
1489     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1490     wxASSERT( destdatabase != NULL ) ;
1491
1492     memset( destdatabase , 0 , size ) ;
1493     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1494
1495     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow)
1496     {
1497         unsigned char *destdata = destdatabase ;
1498         unsigned char r, g, b;
1499
1500         for ( int x = 0 ; x < m_width ; ++x )
1501         {
1502             srcdata++ ;
1503             r = *srcdata++ ;
1504             g = *srcdata++ ;
1505             b = *srcdata++ ;
1506
1507             if ( colour == wxColour( r , g , b ) )
1508             {
1509                 *destdata++ = 0xFF ;
1510                 *destdata++ = 0xFF ;
1511                 *destdata++ = 0xFF ;
1512                 *destdata++ = 0xFF ;
1513             }
1514             else
1515             {
1516                 *destdata++ = 0x00 ;
1517                 *destdata++ = 0x00 ;
1518                 *destdata++ = 0x00 ;
1519                 *destdata++ = 0x00 ;
1520             }
1521         }
1522     }
1523
1524     m_memBuf.UngetWriteBuf( size ) ;
1525     RealizeNative() ;
1526
1527     return true;
1528 }
1529
1530 WXHBITMAP wxMask::GetHBITMAP() const
1531 {
1532     return m_maskBitmap ;
1533 }
1534
1535 // ----------------------------------------------------------------------------
1536 // wxBitmapHandler
1537 // ----------------------------------------------------------------------------
1538
1539 wxBitmapHandler::~wxBitmapHandler()
1540 {
1541 }
1542
1543 bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
1544 {
1545     return false;
1546 }
1547
1548 bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1549         int desiredWidth, int desiredHeight)
1550 {
1551     return false;
1552 }
1553
1554 bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
1555 {
1556     return false;
1557 }
1558
1559 // ----------------------------------------------------------------------------
1560 // Standard Handlers
1561 // ----------------------------------------------------------------------------
1562
1563 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1564 {
1565     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1566
1567 public:
1568     inline wxPICTResourceHandler()
1569     {
1570         SetName(wxT("Macintosh Pict resource"));
1571         SetExtension(wxEmptyString);
1572         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1573     };
1574
1575     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1576           int desiredWidth, int desiredHeight);
1577 };
1578
1579 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1580
1581
1582 bool wxPICTResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1583           int desiredWidth, int desiredHeight)
1584 {
1585 #if wxUSE_METAFILE
1586     Str255 theName ;
1587     wxMacStringToPascal( name , theName ) ;
1588
1589     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1590     if ( thePict )
1591     {
1592         wxMetafile mf ;
1593
1594         mf.SetHMETAFILE( (WXHMETAFILE) thePict ) ;
1595         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1596         wxMemoryDC dc ;
1597         dc.SelectObject( *bitmap ) ;
1598         mf.Play( &dc ) ;
1599         dc.SelectObject( wxNullBitmap ) ;
1600
1601         return true ;
1602     }
1603 #endif
1604
1605     return false ;
1606 }
1607
1608 void wxBitmap::InitStandardHandlers()
1609 {
1610     AddHandler( new wxPICTResourceHandler ) ;
1611     AddHandler( new wxICONResourceHandler ) ;
1612 }
1613
1614 // ----------------------------------------------------------------------------
1615 // raw bitmap access support
1616 // ----------------------------------------------------------------------------
1617
1618 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1619 {
1620     if ( !Ok() )
1621         // no bitmap, no data (raw or otherwise)
1622         return NULL;
1623
1624     data.m_width = GetWidth() ;
1625     data.m_height = GetHeight() ;
1626     data.m_stride = GetWidth() * 4 ;
1627
1628     return BeginRawAccess() ;
1629 }
1630
1631 void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
1632 {
1633     EndRawAccess() ;
1634 }
1635
1636 void wxBitmap::UseAlpha()
1637 {
1638     // remember that we are using alpha channel:
1639     // we'll need to create a proper mask in UngetRawData()
1640     M_BITMAPDATA->UseAlpha( true );
1641 }