src/mac/carbon/bitmap.cpp

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