src/mac/carbon/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/bitmap.cpp
   3 // Purpose:     wxBitmap
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/bitmap.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/log.h"
  18     #include "wx/dcmemory.h"
  19     #include "wx/icon.h"
  20     #include "wx/image.h"
  21 #endif
  22
  23 #include "wx/metafile.h"
  24 #include "wx/xpmdecod.h"
  25
  26 #include "wx/rawbmp.h"
  27
  28 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
  29 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
  30
  31 #ifdef __DARWIN__
  32     #include <ApplicationServices/ApplicationServices.h>
  33 #else
  34     #include <PictUtils.h>
  35 #endif
  36
  37 #include "wx/mac/uma.h"
  38
  39 // Implementation Notes
  40 // --------------------
  41 //
  42 // we are always working with a 32 bit deep pixel buffer
  43 // under QuickDraw its alpha parts are going to be ignored in the GWorld,
  44 // therefore we have a separate GWorld there for blitting the mask in
  45
  46 // under Quartz then content is transformed into a CGImageRef representing the same data
  47 // which can be transferred to the GPU by the OS for fast rendering
  48
  49 // we don't dare use premultiplied alpha yet
  50 #define wxMAC_USE_PREMULTIPLIED_ALPHA 0
  51
  52 #if wxUSE_BMPBUTTON
  53
  54 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
  55 {
  56     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
  57     if ( bitmap.Ok() )
  58     {
  59         wxBitmapRefData * bmap = bitmap.GetBitmapData() ;
  60         if ( bmap == NULL )
  61             return ;
  62
  63         if ( ( bmap->HasNativeSize() && forceType == 0 ) || forceType == kControlContentIconRef )
  64         {
  65             wxBitmap scaleBmp ;
  66             wxBitmapRefData* bmp = bmap ;
  67
  68             if ( !bmap->HasNativeSize() )
  69             {
  70                 // as PICT conversion will only result in a 16x16 icon, let's attempt
  71                 // a few scales for better results
  72
  73                 int w = bitmap.GetWidth() ;
  74                 int h = bitmap.GetHeight() ;
  75                 int sz = wxMax( w , h ) ;
  76                 if ( sz == 24 || sz == 64 )
  77                 {
  78                     scaleBmp = wxBitmap( bitmap.ConvertToImage().Scale( w * 2 , h * 2 ) ) ;
  79                     bmp = scaleBmp.GetBitmapData() ;
  80                 }
  81             }
  82
  83             info->contentType = kControlContentIconRef ;
  84             info->u.iconRef = bmp->GetIconRef() ;
  85             AcquireIconRef( info->u.iconRef ) ;
  86         }
  87 #if defined( __WXMAC_OSX__ ) && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
  88         else if ( forceType == kControlContentCGImageRef )
  89         {
  90             info->contentType = kControlContentCGImageRef ;
  91             info->u.imageRef = (CGImageRef) bmap->CGImageCreate() ;
  92         }
  93 #endif
  94         else
  95         {
  96 #ifndef __LP64__
  97             info->contentType = kControlContentPictHandle ;
  98             info->u.picture = bmap->GetPictHandle() ;
  99 #endif
 100         }
 101     }
 102 }
 103
 104 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
 105 {
 106     if ( info->contentType == kControlContentIconRef )
 107     {
 108         ReleaseIconRef( info->u.iconRef ) ;
 109     }
 110     else if ( info->contentType == kControlNoContent )
 111     {
 112         // there's no bitmap at all, fall through silently
 113     }
 114     else if ( info->contentType == kControlContentPictHandle )
 115     {
 116         // owned by the bitmap, no release here
 117     }
 118 #if defined( __WXMAC_OSX__ ) && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
 119     else if ( info->contentType == kControlContentCGImageRef )
 120     {
 121         CGImageRelease( info->u.imageRef ) ;
 122     }
 123 #endif
 124     else
 125     {
 126         wxFAIL_MSG(wxT("Unexpected bitmap type") ) ;
 127     }
 128 }
 129
 130 #endif //wxUSE_BMPBUTTON
 131
 132 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
 133
 134 void wxBitmapRefData::Init()
 135 {
 136     m_width = 0 ;
 137     m_height = 0 ;
 138     m_depth = 0 ;
 139     m_ok = false ;
 140     m_bitmapMask = NULL ;
 141
 142 #ifdef __WXMAC_OSX__
 143     m_cgImageRef = NULL ;
 144 #endif
 145
 146     m_iconRef = NULL ;
 147     m_pictHandle = NULL ;
 148     m_hBitmap = NULL ;
 149     m_hMaskBitmap = NULL;
 150     m_maskBytesPerRow = 0 ;
 151
 152     m_rawAccessCount = 0 ;
 153     m_hasAlpha = false;
 154 }
 155
 156 wxBitmapRefData::wxBitmapRefData(const wxBitmapRefData &tocopy)
 157 {
 158     Init();
 159     Create(tocopy.m_width, tocopy.m_height, tocopy.m_depth);
 160
 161     if (tocopy.m_bitmapMask)
 162         m_bitmapMask = new wxMask(*tocopy.m_bitmapMask);
 163
 164     unsigned char* dest = (unsigned char*)GetRawAccess();
 165     unsigned char* source = (unsigned char*)tocopy.GetRawAccess();
 166     size_t numbytes = tocopy.m_width * tocopy.m_height * 4;
 167
 168     for (size_t i=0; i<numbytes; i++)
 169     {
 170         *dest++ = *source++;
 171     }
 172
 173     UseAlpha(tocopy.m_hasAlpha);
 174
 175     // TODO:  Copy palette?
 176 }
 177
 178 wxBitmapRefData::wxBitmapRefData()
 179 {
 180     Init() ;
 181 }
 182
 183 wxBitmapRefData::wxBitmapRefData( int w , int h , int d )
 184 {
 185     Init() ;
 186     Create( w , h , d ) ;
 187 }
 188
 189 bool wxBitmapRefData::Create( int w , int h , int d )
 190 {
 191     m_width = wxMax(1, w);
 192     m_height = wxMax(1, h);
 193     m_depth = d ;
 194
 195     m_bytesPerRow = w * 4 ;
 196     size_t size = m_bytesPerRow * h ;
 197     void* data = m_memBuf.GetWriteBuf( size ) ;
 198     memset( data , 0 , size ) ;
 199     m_memBuf.UngetWriteBuf( size ) ;
 200
 201     m_hBitmap = NULL ;
 202     Rect rect = { 0 , 0 , m_height , m_width } ;
 203 #ifndef __LP64__
 204     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 205         (char*) data , m_bytesPerRow ) ) ;
 206     wxASSERT_MSG( m_hBitmap , wxT("Unable to create GWorld context") ) ;
 207 #endif
 208     m_ok = ( m_hBitmap != NULL ) ;
 209
 210     return m_ok ;
 211 }
 212
 213 void wxBitmapRefData::UseAlpha( bool use )
 214 {
 215     if ( m_hasAlpha == use )
 216         return ;
 217
 218     m_hasAlpha = use ;
 219     if ( m_hasAlpha )
 220     {
 221         wxASSERT( m_hMaskBitmap == NULL ) ;
 222
 223         int width = GetWidth() ;
 224         int height = GetHeight() ;
 225         m_maskBytesPerRow = ( width * 4 + 3 ) & 0xFFFFFFC ;
 226         size_t size = height * m_maskBytesPerRow ;
 227         unsigned char * data = (unsigned char * ) m_maskMemBuf.GetWriteBuf( size ) ;
 228         wxASSERT( data != NULL ) ;
 229
 230         memset( data , 0 , size ) ;
 231         Rect rect = { 0 , 0 , height , width } ;
 232 #ifndef __LP64__
 233         verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hMaskBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 234             (char*) data , m_maskBytesPerRow ) ) ;
 235         wxASSERT_MSG( m_hMaskBitmap , wxT("Unable to create GWorld context for alpha mask") ) ;
 236 #endif
 237         m_maskMemBuf.UngetWriteBuf(size) ;
 238
 239 #if !wxMAC_USE_CORE_GRAPHICS
 240         UpdateAlphaMask() ;
 241 #endif
 242     }
 243     else
 244     {
 245 #ifndef __LP64__
 246         DisposeGWorld( m_hMaskBitmap ) ;
 247 #endif
 248         m_hMaskBitmap = NULL ;
 249         m_maskBytesPerRow = 0 ;
 250     }
 251 }
 252
 253 void *wxBitmapRefData::GetRawAccess() const
 254 {
 255     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 256     return m_memBuf.GetData() ;
 257 }
 258
 259 void *wxBitmapRefData::BeginRawAccess()
 260 {
 261     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") ) ;
 262     wxASSERT( m_rawAccessCount == 0 ) ;
 263     wxASSERT_MSG( m_pictHandle == NULL && m_iconRef == NULL ,
 264         wxT("Currently, modifing bitmaps that are used in controls already is not supported") ) ;
 265
 266     ++m_rawAccessCount ;
 267
 268 #ifdef __WXMAC_OSX__
 269     // we must destroy an existing cached image, as
 270     // the bitmap data may change now
 271     if ( m_cgImageRef )
 272     {
 273         CGImageRelease( m_cgImageRef ) ;
 274         m_cgImageRef = NULL ;
 275     }
 276 #endif
 277
 278     return m_memBuf.GetData() ;
 279 }
 280
 281 void wxBitmapRefData::EndRawAccess()
 282 {
 283     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 284     wxASSERT( m_rawAccessCount == 1 ) ;
 285
 286     --m_rawAccessCount ;
 287
 288 #if !wxMAC_USE_CORE_GRAPHICS
 289     UpdateAlphaMask() ;
 290 #endif
 291 }
 292
 293 bool wxBitmapRefData::HasNativeSize()
 294 {
 295     int w = GetWidth() ;
 296     int h = GetHeight() ;
 297     int sz = wxMax( w , h ) ;
 298
 299     return ( sz == 128 || sz == 48 || sz == 32 || sz == 16 );
 300 }
 301
 302 IconRef wxBitmapRefData::GetIconRef()
 303 {
 304     if ( m_iconRef == NULL )
 305     {
 306         // Create Icon Family Handle
 307
 308         IconFamilyHandle iconFamily = NULL ;
 309
 310 #ifdef WORDS_BIGENDIAN
 311         iconFamily = (IconFamilyHandle) NewHandle( 8 ) ;
 312         (**iconFamily).resourceType = kIconFamilyType ;
 313         (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
 314 #else
 315         // test this solution on big endian as well
 316         iconFamily = (IconFamilyHandle) NewHandle( 0 ) ;
 317 #endif
 318
 319         int w = GetWidth() ;
 320         int h = GetHeight() ;
 321         int sz = wxMax( w , h ) ;
 322
 323         OSType dataType = 0 ;
 324         OSType maskType = 0 ;
 325
 326         switch (sz)
 327         {
 328             case 128:
 329                 dataType = kThumbnail32BitData ;
 330                 maskType = kThumbnail8BitMask ;
 331                 break;
 332
 333             case 48:
 334                 dataType = kHuge32BitData ;
 335                 maskType = kHuge8BitMask ;
 336                 break;
 337
 338             case 32:
 339                 dataType = kLarge32BitData ;
 340                 maskType = kLarge8BitMask ;
 341                 break;
 342
 343             case 16:
 344                 dataType = kSmall32BitData ;
 345                 maskType = kSmall8BitMask ;
 346                 break;
 347
 348             default:
 349                 break;
 350         }
 351
 352         if ( dataType != 0 )
 353         {
 354             // setup the header properly
 355
 356             Handle data = NULL ;
 357             Handle maskdata = NULL ;
 358             unsigned char * maskptr = NULL ;
 359             unsigned char * ptr = NULL ;
 360             size_t datasize, masksize ;
 361
 362             datasize = sz * sz * 4 ;
 363             data = NewHandle( datasize ) ;
 364             HLock( data ) ;
 365             ptr = (unsigned char*) *data ;
 366             memset( ptr , 0, datasize ) ;
 367
 368             masksize = sz * sz ;
 369             maskdata = NewHandle( masksize ) ;
 370             HLock( maskdata ) ;
 371             maskptr = (unsigned char*) *maskdata ;
 372             memset( maskptr , 0 , masksize ) ;
 373
 374             bool hasAlpha = HasAlpha() ;
 375             wxMask *mask = m_bitmapMask ;
 376             unsigned char * source = (unsigned char*) GetRawAccess() ;
 377             unsigned char * masksource = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 378
 379             for ( int y = 0 ; y < h ; ++y )
 380             {
 381                 unsigned char * dest = ptr + y * sz * 4 ;
 382                 unsigned char * maskdest = maskptr + y * sz ;
 383                 unsigned char a, r, g, b;
 384
 385                 for ( int x = 0 ; x < w ; ++x )
 386                 {
 387                     a = *source ++ ;
 388                     r = *source ++ ;
 389                     g = *source ++ ;
 390                     b = *source ++ ;
 391
 392                     *dest++ = 0 ;
 393                     *dest++ = r ;
 394                     *dest++ = g ;
 395                     *dest++ = b ;
 396
 397                     if ( mask )
 398                     {
 399                         *maskdest++ = 0xFF - *masksource++ ;
 400                         masksource++ ;
 401                         masksource++ ;
 402                         masksource++ ;
 403                     }
 404                     else if ( hasAlpha )
 405                         *maskdest++ = a ;
 406                     else
 407                         *maskdest++ = 0xFF ;
 408                 }
 409             }
 410
 411             OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 412             wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 413
 414             err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 415             wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 416
 417             HUnlock( data ) ;
 418             HUnlock( maskdata ) ;
 419             DisposeHandle( data ) ;
 420             DisposeHandle( maskdata ) ;
 421         }
 422         else
 423         {
 424             PicHandle pic = GetPictHandle() ;
 425             SetIconFamilyData( iconFamily, 'PICT' , (Handle) pic ) ;
 426         }
 427         // transform into IconRef
 428 #if defined( __WXMAC_OSX__ ) && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
 429         // cleaner version existing from 10.3 upwards
 430         HLock((Handle) iconFamily);
 431         OSStatus err = GetIconRefFromIconFamilyPtr( *iconFamily, GetHandleSize((Handle) iconFamily), &m_iconRef );
 432         HUnlock((Handle) iconFamily);
 433         wxASSERT_MSG( err == noErr , wxT("Error when constructing icon ref") );
 434 #else
 435         static int iconCounter = 2 ;
 436
 437         OSStatus err = RegisterIconRefFromIconFamily( 'WXNG' , (OSType) iconCounter, iconFamily, &m_iconRef ) ;
 438         wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 439
 440         // we have to retain a reference, as Unregister will decrement it
 441         AcquireIconRef( m_iconRef ) ;
 442         UnregisterIconRef( 'WXNG' , (OSType) iconCounter ) ;
 443         ++iconCounter ;
 444 #endif
 445         DisposeHandle( (Handle) iconFamily ) ;
 446     }
 447
 448     return m_iconRef ;
 449 }
 450
 451 PicHandle wxBitmapRefData::GetPictHandle()
 452 {
 453     if ( m_pictHandle == NULL )
 454     {
 455 #ifndef __LP64__
 456         CGrafPtr origPort = NULL ;
 457         GDHandle origDev = NULL ;
 458         GWorldPtr wp = NULL ;
 459         GWorldPtr mask = NULL ;
 460         int height = GetHeight() ;
 461         int width = GetWidth() ;
 462
 463         Rect rect = { 0 , 0 , height , width } ;
 464         RgnHandle clipRgn = NULL ;
 465
 466         GetGWorld( &origPort , &origDev ) ;
 467         wp = GetHBITMAP( &mask ) ;
 468
 469         if ( mask )
 470         {
 471             GWorldPtr monoworld ;
 472             clipRgn = NewRgn() ;
 473             OSStatus err = NewGWorld( &monoworld , 1 , &rect , NULL , NULL , 0 ) ;
 474             verify_noerr(err) ;
 475             LockPixels( GetGWorldPixMap( monoworld ) ) ;
 476             LockPixels( GetGWorldPixMap( mask ) ) ;
 477             SetGWorld( monoworld , NULL ) ;
 478
 479             RGBColor white = { 0xffff , 0xffff , 0xffff } ;
 480             RGBColor black = { 0x0000 , 0x0000 , 0x0000 } ;
 481             RGBForeColor( &black ) ;
 482             RGBBackColor( &white ) ;
 483
 484             CopyBits(GetPortBitMapForCopyBits(mask),
 485                     GetPortBitMapForCopyBits(monoworld),
 486                     &rect,
 487                     &rect,
 488                     srcCopy, NULL);
 489             BitMapToRegion( clipRgn , (BitMap*) *GetGWorldPixMap( monoworld ) ) ;
 490
 491             UnlockPixels( GetGWorldPixMap( monoworld ) ) ;
 492             UnlockPixels( GetGWorldPixMap( mask ) ) ;
 493             DisposeGWorld( monoworld ) ;
 494         }
 495
 496         SetGWorld( wp , NULL ) ;
 497         Rect portRect ;
 498         GetPortBounds( wp , &portRect ) ;
 499         m_pictHandle = OpenPicture(&portRect);
 500
 501         if (m_pictHandle)
 502         {
 503             RGBColor white = { 0xffff , 0xffff , 0xffff } ;
 504             RGBColor black = { 0x0000 , 0x0000 , 0x0000 } ;
 505
 506             RGBForeColor( &black ) ;
 507             RGBBackColor( &white ) ;
 508
 509             if ( clipRgn )
 510                 SetClip( clipRgn ) ;
 511
 512             LockPixels( GetGWorldPixMap( wp ) ) ;
 513             CopyBits(GetPortBitMapForCopyBits(wp),
 514                     GetPortBitMapForCopyBits(wp),
 515                     &portRect,
 516                     &portRect,
 517                     srcCopy,clipRgn);
 518             UnlockPixels( GetGWorldPixMap( wp ) ) ;
 519             ClosePicture();
 520         }
 521
 522         SetGWorld( origPort , origDev ) ;
 523         if ( clipRgn )
 524             DisposeRgn( clipRgn ) ;
 525 #endif
 526     }
 527
 528     return m_pictHandle ;
 529 }
 530
 531 #ifdef __WXMAC_OSX__
 532 void wxMacMemoryBufferReleaseProc(void *info, const void *data, size_t size)
 533 {
 534     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
 535
 536     wxASSERT( data == membuf->GetData() ) ;
 537
 538     delete membuf ;
 539 }
 540
 541 CGImageRef wxBitmapRefData::CGImageCreate() const
 542 {
 543     wxASSERT( m_ok ) ;
 544     wxASSERT( m_rawAccessCount >= 0 ) ;
 545     CGImageRef image ;
 546     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 547     {
 548         size_t imageSize = m_width * m_height * 4 ;
 549         void * dataBuffer = m_memBuf.GetData() ;
 550         int w = m_width ;
 551         int h = m_height ;
 552         CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 553         wxMemoryBuffer* membuf = NULL ;
 554
 555         if ( m_bitmapMask )
 556         {
 557             alphaInfo = kCGImageAlphaFirst ;
 558             membuf = new wxMemoryBuffer( imageSize ) ;
 559             memcpy( membuf->GetData() , dataBuffer , imageSize ) ;
 560             unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 561             int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 562             unsigned char *destalpha = (unsigned char *) membuf->GetData() ;
 563             for ( int y = 0 ; y < h ; ++y , sourcemaskstart += maskrowbytes)
 564             {
 565                 unsigned char *sourcemask = sourcemaskstart ;
 566                 for ( int x = 0 ; x < w ; ++x , sourcemask += 4 , destalpha += 4 )
 567                 {
 568                     *destalpha = 0xFF - *sourcemask ;
 569                 }
 570             }
 571         }
 572         else
 573         {
 574             if ( m_hasAlpha )
 575             {
 576 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 577                 alphaInfo = kCGImageAlphaPremultipliedFirst ;
 578 #else
 579                 alphaInfo = kCGImageAlphaFirst ;
 580 #endif
 581             }
 582
 583             membuf = new wxMemoryBuffer( m_memBuf ) ;
 584         }
 585
 586         CGDataProviderRef dataProvider = NULL ;
 587         if ( m_depth == 1 )
 588         {
 589             wxMemoryBuffer* maskBuf = new wxMemoryBuffer( m_width * m_height );
 590             unsigned char * maskBufData = (unsigned char *) maskBuf->GetData();
 591             unsigned char * bufData = (unsigned char *) membuf->GetData() ;
 592             // copy one color component
 593             for( int i = 0 ; i < m_width * m_height ; ++i )
 594                 maskBufData[i] = bufData[i*4+3];
 595             dataProvider =
 596                 CGDataProviderCreateWithData(
 597                     maskBuf , (const void *) maskBufData , m_width * m_height,
 598                     wxMacMemoryBufferReleaseProc );
 599             // as we are now passing the mask buffer to the data provider, we have
 600             // to release the membuf ourselves
 601             delete membuf ;
 602
 603             image = ::CGImageMaskCreate( w, h, 8, 8, m_width , dataProvider, NULL, false );
 604         }
 605         else
 606         {
 607             CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 608             dataProvider =
 609                 CGDataProviderCreateWithData(
 610                     membuf , (const void *)membuf->GetData() , imageSize,
 611                     wxMacMemoryBufferReleaseProc );
 612             image =
 613             ::CGImageCreate(
 614                 w, h, 8 , 32 , 4 * m_width , colorSpace, alphaInfo ,
 615                 dataProvider, NULL , false , kCGRenderingIntentDefault );
 616         }
 617         CGDataProviderRelease( dataProvider);
 618     }
 619     else
 620     {
 621         image = m_cgImageRef ;
 622         CGImageRetain( image ) ;
 623     }
 624
 625     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 626     {
 627         // we keep it for later use
 628         m_cgImageRef = image ;
 629         CGImageRetain( image ) ;
 630     }
 631
 632     return image ;
 633 }
 634 #endif
 635
 636 GWorldPtr wxBitmapRefData::GetHBITMAP(GWorldPtr* mask) const
 637 {
 638     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 639     if ( mask )
 640     {
 641         *mask = NULL ;
 642         if ( m_bitmapMask )
 643         {
 644             *mask = (GWorldPtr) m_bitmapMask->GetHBITMAP() ;
 645         }
 646         else if ( m_hasAlpha )
 647         {
 648 #if !wxMAC_USE_CORE_GRAPHICS
 649             if ( m_rawAccessCount > 0 )
 650                 UpdateAlphaMask() ;
 651 #else
 652             // this structure is not kept in synch when using CG, so if something
 653             // is really accessing the GrafPorts, we have to sync it
 654             UpdateAlphaMask() ;
 655 #endif
 656
 657             *mask = m_hMaskBitmap ;
 658         }
 659     }
 660
 661     return m_hBitmap ;
 662 }
 663
 664 void wxBitmapRefData::UpdateAlphaMask() const
 665 {
 666     if ( m_hasAlpha )
 667     {
 668         unsigned char *sourcemask = (unsigned char *) GetRawAccess() ;
 669         unsigned char *destalphabase = (unsigned char *) m_maskMemBuf.GetData() ;
 670
 671         int h = GetHeight() ;
 672         int w = GetWidth() ;
 673
 674         for ( int y = 0 ; y < h ; ++y , destalphabase += m_maskBytesPerRow )
 675         {
 676             unsigned char* destalpha = destalphabase ;
 677
 678             for ( int x = 0 ; x < w ; ++x , sourcemask += 4 )
 679             {
 680                 // we must have 24 bit depth for non quartz smooth alpha
 681                 *destalpha++ = 255 ;
 682                 *destalpha++ = 255  - *sourcemask ;
 683                 *destalpha++ = 255  - *sourcemask ;
 684                 *destalpha++ = 255  - *sourcemask ;
 685             }
 686         }
 687     }
 688 }
 689
 690 void wxBitmapRefData::Free()
 691 {
 692     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 693
 694 #ifdef __WXMAC_OSX__
 695     if ( m_cgImageRef )
 696     {
 697         CGImageRelease( m_cgImageRef ) ;
 698         m_cgImageRef = NULL ;
 699     }
 700 #endif
 701
 702     if ( m_iconRef )
 703     {
 704         ReleaseIconRef( m_iconRef ) ;
 705         m_iconRef = NULL ;
 706     }
 707
 708 #ifndef __LP64__
 709     if ( m_pictHandle )
 710     {
 711         KillPicture( m_pictHandle ) ;
 712         m_pictHandle = NULL ;
 713     }
 714
 715     if ( m_hBitmap )
 716     {
 717         DisposeGWorld( MAC_WXHBITMAP(m_hBitmap) ) ;
 718         m_hBitmap = NULL ;
 719     }
 720
 721     if ( m_hMaskBitmap )
 722     {
 723         DisposeGWorld( MAC_WXHBITMAP(m_hMaskBitmap) ) ;
 724         m_hMaskBitmap = NULL ;
 725     }
 726 #endif
 727     if (m_bitmapMask)
 728     {
 729         delete m_bitmapMask;
 730         m_bitmapMask = NULL;
 731     }
 732 }
 733
 734 wxBitmapRefData::~wxBitmapRefData()
 735 {
 736     Free() ;
 737 }
 738
 739 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 740 {
 741     bool created = false ;
 742     int w = icon.GetWidth() ;
 743     int h = icon.GetHeight() ;
 744
 745     Create( icon.GetWidth() , icon.GetHeight() ) ;
 746
 747     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 748     {
 749         IconFamilyHandle iconFamily = NULL ;
 750         Handle imagehandle = NewHandle( 0 ) ;
 751         Handle maskhandle = NewHandle( 0 ) ;
 752
 753         OSType maskType = 0;
 754         OSType dataType = 0;
 755         IconSelectorValue selector = 0 ;
 756
 757         switch (w)
 758         {
 759             case 128:
 760                 dataType = kThumbnail32BitData ;
 761                 maskType = kThumbnail8BitMask ;
 762                 selector = kSelectorAllAvailableData ;
 763                 break;
 764
 765             case 48:
 766                 dataType = kHuge32BitData ;
 767                 maskType = kHuge8BitMask ;
 768                 selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 769                 break;
 770
 771             case 32:
 772                 dataType = kLarge32BitData ;
 773                 maskType = kLarge8BitMask ;
 774                 selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 775                 break;
 776
 777             case 16:
 778                 dataType = kSmall32BitData ;
 779                 maskType = kSmall8BitMask ;
 780                 selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 781                 break;
 782
 783             default:
 784                 break;
 785         }
 786
 787         OSStatus err = IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ;
 788
 789         err = GetIconFamilyData( iconFamily , dataType , imagehandle ) ;
 790         err = GetIconFamilyData( iconFamily , maskType , maskhandle ) ;
 791         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 792         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 793
 794         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 795         {
 796             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 797             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 798
 799             UseAlpha() ;
 800
 801             unsigned char *source = (unsigned char *) *imagehandle ;
 802             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 803             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 804
 805             for ( int y = 0 ; y < h ; ++y )
 806             {
 807                 for ( int x = 0 ; x < w ; ++x )
 808                 {
 809                     *destination++ = *sourcemask++ ;
 810                     source++ ;
 811                     *destination++ = *source++ ;
 812                     *destination++ = *source++ ;
 813                     *destination++ = *source++ ;
 814                 }
 815             }
 816
 817             EndRawAccess() ;
 818             DisposeHandle( imagehandle ) ;
 819             DisposeHandle( maskhandle ) ;
 820             created = true ;
 821         }
 822
 823         DisposeHandle( (Handle) iconFamily ) ;
 824     }
 825
 826     if ( !created )
 827     {
 828         wxMemoryDC dc ;
 829         dc.SelectObject( *this ) ;
 830         dc.DrawIcon( icon , 0 , 0 ) ;
 831         dc.SelectObject( wxNullBitmap ) ;
 832     }
 833
 834     return true;
 835 }
 836
 837 wxBitmap::wxBitmap()
 838 {
 839 }
 840
 841 wxBitmap::~wxBitmap()
 842 {
 843 }
 844
 845 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 846 {
 847     m_refData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 848
 849     if ( no_bits == 1 )
 850     {
 851         int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 852         if ( the_width % (sizeof(unsigned char) * 8) )
 853             linesize += sizeof(unsigned char);
 854
 855         unsigned char* linestart = (unsigned char*) bits ;
 856         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 857
 858         for ( int y = 0 ; y < the_height ; ++y , linestart += linesize )
 859         {
 860             int index, bit, mask;
 861
 862             for ( int x = 0 ; x < the_width ; ++x )
 863             {
 864                 index = x / 8 ;
 865                 bit = x % 8 ;
 866                 mask = 1 << bit ;
 867
 868                 if ( linestart[index] & mask )
 869                 {
 870                     *destination++ = 0xFF ;
 871                     *destination++ = 0 ;
 872                     *destination++ = 0 ;
 873                     *destination++ = 0 ;
 874                 }
 875                 else
 876                 {
 877                     *destination++ = 0xFF ;
 878                     *destination++ = 0xFF ;
 879                     *destination++ = 0xFF ;
 880                     *destination++ = 0xFF ;
 881                 }
 882             }
 883         }
 884
 885         EndRawAccess() ;
 886     }
 887     else
 888     {
 889         wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 890     }
 891 }
 892
 893 wxBitmap::wxBitmap(int w, int h, int d)
 894 {
 895     (void)Create(w, h, d);
 896 }
 897
 898 wxBitmap::wxBitmap(const void* data, wxBitmapType type, int width, int height, int depth)
 899 {
 900     (void) Create(data, type, width, height, depth);
 901 }
 902
 903 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 904 {
 905     LoadFile(filename, type);
 906 }
 907
 908 wxObjectRefData* wxBitmap::CreateRefData() const
 909 {
 910     return new wxBitmapRefData;
 911 }
 912
 913 wxObjectRefData* wxBitmap::CloneRefData(const wxObjectRefData* data) const
 914 {
 915     return new wxBitmapRefData(*wx_static_cast(const wxBitmapRefData *, data));
 916 }
 917
 918 void * wxBitmap::GetRawAccess() const
 919 {
 920     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 921
 922     return M_BITMAPDATA->GetRawAccess() ;
 923 }
 924
 925 void * wxBitmap::BeginRawAccess()
 926 {
 927     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 928
 929     return M_BITMAPDATA->BeginRawAccess() ;
 930 }
 931
 932 void wxBitmap::EndRawAccess()
 933 {
 934     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 935
 936     M_BITMAPDATA->EndRawAccess() ;
 937 }
 938
 939 #ifdef __WXMAC_OSX__
 940 WXCGIMAGEREF wxBitmap::CGImageCreate() const
 941 {
 942     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 943
 944     return M_BITMAPDATA->CGImageCreate() ;
 945 }
 946 #endif
 947
 948 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
 949 {
 950     wxCHECK_MSG( Ok() &&
 951                 (rect.x >= 0) && (rect.y >= 0) &&
 952                 (rect.x+rect.width <= GetWidth()) &&
 953                 (rect.y+rect.height <= GetHeight()),
 954                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 955
 956     wxBitmap ret( rect.width, rect.height, GetDepth() );
 957     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 958
 959     int sourcewidth = GetWidth() ;
 960     int destwidth = rect.width ;
 961     int destheight = rect.height ;
 962
 963     {
 964         unsigned char *sourcedata = (unsigned char*) GetRawAccess() ;
 965         unsigned char *destdata = (unsigned char*) ret.BeginRawAccess() ;
 966         wxASSERT( (sourcedata != NULL) && (destdata != NULL) ) ;
 967
 968         int sourcelinesize = sourcewidth * 4 ;
 969         int destlinesize = destwidth * 4 ;
 970         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
 971         unsigned char *dest = destdata ;
 972
 973         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 974         {
 975             memcpy( dest , source , destlinesize ) ;
 976         }
 977     }
 978
 979     ret.EndRawAccess() ;
 980
 981     if ( M_BITMAPDATA->m_bitmapMask )
 982     {
 983         wxMemoryBuffer maskbuf ;
 984         int rowBytes = ( destwidth * 4 + 3 ) & 0xFFFFFFC ;
 985         size_t maskbufsize = rowBytes * destheight ;
 986
 987         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow() ;
 988         int destlinesize = rowBytes ;
 989
 990         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
 991         unsigned char *destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
 992         wxASSERT( (source != NULL) && (destdata != NULL) ) ;
 993
 994         source += rect.x * 4 + rect.y * sourcelinesize ;
 995         unsigned char *dest = destdata ;
 996
 997         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 998         {
 999             memcpy( dest , source , destlinesize ) ;
1000         }
1001
1002         maskbuf.UngetWriteBuf( maskbufsize ) ;
1003         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
1004     }
1005     else if ( HasAlpha() )
1006         ret.UseAlpha() ;
1007
1008     return ret;
1009 }
1010
1011 bool wxBitmap::Create(int w, int h, int d)
1012 {
1013     UnRef();
1014
1015     if ( d < 0 )
1016         d = wxDisplayDepth() ;
1017
1018     m_refData = new wxBitmapRefData( w , h , d );
1019
1020     return M_BITMAPDATA->Ok() ;
1021 }
1022
1023 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
1024 {
1025     UnRef();
1026
1027     wxBitmapHandler *handler = FindHandler(type);
1028
1029     if ( handler )
1030     {
1031         m_refData = new wxBitmapRefData;
1032
1033         return handler->LoadFile(this, filename, type, -1, -1);
1034     }
1035     else
1036     {
1037 #if wxUSE_IMAGE
1038         wxImage loadimage(filename, type);
1039         if (loadimage.Ok())
1040         {
1041             *this = loadimage;
1042
1043             return true;
1044         }
1045 #endif
1046     }
1047
1048     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1049
1050     return false;
1051 }
1052
1053 bool wxBitmap::Create(const void* data, wxBitmapType type, int width, int height, int depth)
1054 {
1055     UnRef();
1056
1057     m_refData = new wxBitmapRefData;
1058
1059     wxBitmapHandler *handler = FindHandler(type);
1060
1061     if ( handler == NULL )
1062     {
1063         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1064
1065         return false;
1066     }
1067
1068     return handler->Create(this, data, type, width, height, depth);
1069 }
1070
1071 #if wxUSE_IMAGE
1072
1073 wxBitmap::wxBitmap(const wxImage& image, int depth)
1074 {
1075     wxCHECK_RET( image.Ok(), wxT("invalid image") );
1076
1077     // width and height of the device-dependent bitmap
1078     int width = image.GetWidth();
1079     int height = image.GetHeight();
1080
1081     m_refData = new wxBitmapRefData( width , height , depth ) ;
1082
1083     // Create picture
1084
1085     bool hasAlpha = false ;
1086
1087     if ( image.HasMask() )
1088     {
1089         // takes precedence, don't mix with alpha info
1090     }
1091     else
1092     {
1093         hasAlpha = image.HasAlpha() ;
1094     }
1095
1096     if ( hasAlpha )
1097         UseAlpha() ;
1098
1099     unsigned char* destination = (unsigned char*) BeginRawAccess() ;
1100     register unsigned char* data = image.GetData();
1101     const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
1102
1103     for (int y = 0; y < height; y++)
1104     {
1105         for (int x = 0; x < width; x++)
1106         {
1107             if ( hasAlpha )
1108             {
1109                 const unsigned char a = *alpha++;
1110                 *destination++ = a ;
1111
1112 #if wxMAC_USE_PREMULTIPLIED_ALPHA
1113                 *destination++ = ((*data++) * a + 127) / 255 ;
1114                 *destination++ = ((*data++) * a + 127) / 255 ;
1115                 *destination++ = ((*data++) * a + 127) / 255 ;
1116 #else
1117                 *destination++ = *data++ ;
1118                 *destination++ = *data++ ;
1119                 *destination++ = *data++ ;
1120 #endif
1121             }
1122             else
1123             {
1124                 *destination++ = 0xFF ;
1125                 *destination++ = *data++ ;
1126                 *destination++ = *data++ ;
1127                 *destination++ = *data++ ;
1128             }
1129         }
1130     }
1131
1132     EndRawAccess() ;
1133     if ( image.HasMask() )
1134         SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
1135 }
1136
1137 wxImage wxBitmap::ConvertToImage() const
1138 {
1139     wxImage image;
1140
1141     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
1142
1143     // create an wxImage object
1144     int width = GetWidth();
1145     int height = GetHeight();
1146     image.Create( width, height );
1147
1148     unsigned char *data = image.GetData();
1149     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
1150
1151     unsigned char* source = (unsigned char*) GetRawAccess() ;
1152
1153     bool hasAlpha = false ;
1154     bool hasMask = false ;
1155     int maskBytesPerRow = 0 ;
1156     unsigned char *alpha = NULL ;
1157     unsigned char *mask = NULL ;
1158
1159     if ( HasAlpha() )
1160         hasAlpha = true ;
1161
1162     if ( GetMask() )
1163     {
1164         hasMask = true ;
1165         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1166         maskBytesPerRow = GetMask()->GetBytesPerRow() ;
1167     }
1168
1169     if ( hasAlpha )
1170     {
1171         image.SetAlpha() ;
1172         alpha = image.GetAlpha() ;
1173     }
1174
1175     int index = 0;
1176
1177     // The following masking algorithm is the same as well in msw/gtk:
1178     // the colour used as transparent one in wxImage and the one it is
1179     // replaced with when it actually occurs in the bitmap
1180     static const int MASK_RED = 1;
1181     static const int MASK_GREEN = 2;
1182     static const int MASK_BLUE = 3;
1183     static const int MASK_BLUE_REPLACEMENT = 2;
1184
1185     for (int yy = 0; yy < height; yy++ , mask += maskBytesPerRow )
1186     {
1187         unsigned char * maskp = mask ;
1188         unsigned char a, r, g, b;
1189         long color;
1190
1191         for (int xx = 0; xx < width; xx++)
1192         {
1193             color = *((long*) source) ;
1194 #ifdef WORDS_BIGENDIAN
1195             a = ((color&0xFF000000) >> 24) ;
1196             r = ((color&0x00FF0000) >> 16) ;
1197             g = ((color&0x0000FF00) >> 8) ;
1198             b = (color&0x000000FF);
1199 #else
1200             b = ((color&0xFF000000) >> 24) ;
1201             g = ((color&0x00FF0000) >> 16) ;
1202             r = ((color&0x0000FF00) >> 8) ;
1203             a = (color&0x000000FF);
1204 #endif
1205             if ( hasMask )
1206             {
1207                 if ( *maskp++ == 0xFF )
1208                 {
1209                     r = MASK_RED ;
1210                     g = MASK_GREEN ;
1211                     b = MASK_BLUE ;
1212                 }
1213                 else if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1214                     b = MASK_BLUE_REPLACEMENT ;
1215
1216                 maskp++ ;
1217                 maskp++ ;
1218                 maskp++ ;
1219             }
1220             else if ( hasAlpha )
1221                 *alpha++ = a ;
1222
1223             data[index    ] = r ;
1224             data[index + 1] = g ;
1225             data[index + 2] = b ;
1226
1227             index += 3;
1228             source += 4 ;
1229         }
1230     }
1231
1232     if ( hasMask )
1233         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1234
1235     return image;
1236 }
1237
1238 #endif //wxUSE_IMAGE
1239
1240 bool wxBitmap::SaveFile( const wxString& filename,
1241     wxBitmapType type, const wxPalette *palette ) const
1242 {
1243     bool success = false;
1244     wxBitmapHandler *handler = FindHandler(type);
1245
1246     if ( handler )
1247     {
1248         success = handler->SaveFile(this, filename, type, palette);
1249     }
1250     else
1251     {
1252 #if wxUSE_IMAGE
1253         wxImage image = ConvertToImage();
1254         success = image.SaveFile(filename, type);
1255 #else
1256         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1257 #endif
1258     }
1259
1260     return success;
1261 }
1262
1263 bool wxBitmap::IsOk() const
1264 {
1265    return (M_BITMAPDATA && M_BITMAPDATA->Ok());
1266 }
1267
1268 int wxBitmap::GetHeight() const
1269 {
1270    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1271
1272    return M_BITMAPDATA->GetHeight();
1273 }
1274
1275 int wxBitmap::GetWidth() const
1276 {
1277    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1278
1279    return M_BITMAPDATA->GetWidth() ;
1280 }
1281
1282 int wxBitmap::GetDepth() const
1283 {
1284    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1285
1286    return M_BITMAPDATA->GetDepth();
1287 }
1288
1289 #if WXWIN_COMPATIBILITY_2_4
1290 int wxBitmap::GetQuality() const
1291 {
1292     return 0;
1293 }
1294
1295 void wxBitmap::SetQuality(int WXUNUSED(quality))
1296 {
1297 }
1298 #endif
1299
1300 wxMask *wxBitmap::GetMask() const
1301 {
1302    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1303
1304    return M_BITMAPDATA->m_bitmapMask;
1305 }
1306
1307 bool wxBitmap::HasAlpha() const
1308 {
1309    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1310
1311    return M_BITMAPDATA->HasAlpha() ;
1312 }
1313
1314 void wxBitmap::SetWidth(int w)
1315 {
1316     AllocExclusive();
1317     M_BITMAPDATA->SetWidth(w);
1318 }
1319
1320 void wxBitmap::SetHeight(int h)
1321 {
1322     AllocExclusive();
1323     M_BITMAPDATA->SetHeight(h);
1324 }
1325
1326 void wxBitmap::SetDepth(int d)
1327 {
1328     AllocExclusive();
1329     M_BITMAPDATA->SetDepth(d);
1330 }
1331
1332 void wxBitmap::SetOk(bool isOk)
1333 {
1334     AllocExclusive();
1335     M_BITMAPDATA->SetOk(isOk);
1336 }
1337
1338 #if wxUSE_PALETTE
1339 wxPalette *wxBitmap::GetPalette() const
1340 {
1341    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1342
1343    return &M_BITMAPDATA->m_bitmapPalette;
1344 }
1345
1346 void wxBitmap::SetPalette(const wxPalette& palette)
1347 {
1348     AllocExclusive();
1349     M_BITMAPDATA->m_bitmapPalette = palette ;
1350 }
1351 #endif // wxUSE_PALETTE
1352
1353 void wxBitmap::SetMask(wxMask *mask)
1354 {
1355     AllocExclusive();
1356     // Remove existing mask if there is one.
1357     delete M_BITMAPDATA->m_bitmapMask;
1358
1359     M_BITMAPDATA->m_bitmapMask = mask ;
1360 }
1361
1362 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1363 {
1364     return WXHBITMAP(M_BITMAPDATA->GetHBITMAP((GWorldPtr*)mask));
1365 }
1366
1367 // ----------------------------------------------------------------------------
1368 // wxMask
1369 // ----------------------------------------------------------------------------
1370
1371 wxMask::wxMask()
1372 {
1373     Init() ;
1374 }
1375
1376 wxMask::wxMask(const wxMask &tocopy)
1377 {
1378     Init();
1379
1380     m_bytesPerRow = tocopy.m_bytesPerRow;
1381     m_width = tocopy.m_width;
1382     m_height = tocopy.m_height;
1383
1384     size_t size = m_bytesPerRow * m_height;
1385     unsigned char* dest = (unsigned char*)m_memBuf.GetWriteBuf( size );
1386     unsigned char* source = (unsigned char*)tocopy.m_memBuf.GetData();
1387     for (size_t i=0; i<size; i++)
1388     {
1389         *dest++ = *source++;
1390     }
1391
1392     m_memBuf.UngetWriteBuf( size ) ;
1393     RealizeNative() ;
1394 }
1395
1396 // Construct a mask from a bitmap and a colour indicating
1397 // the transparent area
1398 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
1399 {
1400     Init() ;
1401     Create( bitmap, colour );
1402 }
1403
1404 // Construct a mask from a mono bitmap (copies the bitmap).
1405 wxMask::wxMask( const wxBitmap& bitmap )
1406 {
1407     Init() ;
1408     Create( bitmap );
1409 }
1410
1411 // Construct a mask from a mono bitmap (copies the bitmap).
1412
1413 wxMask::wxMask( const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1414 {
1415     Init() ;
1416     Create( data, width , height , bytesPerRow );
1417 }
1418
1419 wxMask::~wxMask()
1420 {
1421 #ifndef __LP64__
1422     if ( m_maskBitmap )
1423     {
1424         DisposeGWorld( (GWorldPtr)m_maskBitmap ) ;
1425         m_maskBitmap = NULL ;
1426     }
1427 #endif
1428 }
1429
1430 void wxMask::Init()
1431 {
1432     m_width = m_height = m_bytesPerRow = 0 ;
1433     m_maskBitmap = NULL ;
1434 }
1435
1436 void *wxMask::GetRawAccess() const
1437 {
1438     return m_memBuf.GetData() ;
1439 }
1440
1441 // The default ColorTable for k8IndexedGrayPixelFormat in Intel appears to be broken, so we'll use an non-indexed
1442 // bitmap mask instead; in order to keep the code simple, the change applies to PowerPC implementations as well
1443
1444 void wxMask::RealizeNative()
1445 {
1446 #ifndef __LP64__
1447     if ( m_maskBitmap )
1448     {
1449        DisposeGWorld( (GWorldPtr)m_maskBitmap ) ;
1450        m_maskBitmap = NULL ;
1451     }
1452
1453     Rect rect = { 0 , 0 , m_height , m_width } ;
1454
1455     OSStatus err = NewGWorldFromPtr(
1456         (GWorldPtr*) &m_maskBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
1457         (char*) m_memBuf.GetData() , m_bytesPerRow ) ;
1458     verify_noerr( err ) ;
1459 #endif
1460 }
1461
1462 // Create a mask from a mono bitmap (copies the bitmap).
1463
1464 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1465 {
1466     m_memBuf = data ;
1467     m_width = width ;
1468     m_height = height ;
1469     m_bytesPerRow = bytesPerRow ;
1470
1471     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1472
1473     RealizeNative() ;
1474
1475     return true ;
1476 }
1477
1478 // Create a mask from a mono bitmap (copies the bitmap).
1479 bool wxMask::Create(const wxBitmap& bitmap)
1480 {
1481     m_width = bitmap.GetWidth() ;
1482     m_height = bitmap.GetHeight() ;
1483     m_bytesPerRow = ( m_width * 4 + 3 ) & 0xFFFFFFC ;
1484
1485     size_t size = m_bytesPerRow * m_height ;
1486     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1487     wxASSERT( destdatabase != NULL ) ;
1488
1489     memset( destdatabase , 0 , size ) ;
1490     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1491
1492     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1493     {
1494         unsigned char *destdata = destdatabase ;
1495         unsigned char r, g, b;
1496
1497         for ( int x = 0 ; x < m_width ; ++x )
1498         {
1499             srcdata++ ;
1500             r = *srcdata++ ;
1501             g = *srcdata++ ;
1502             b = *srcdata++ ;
1503
1504             if ( ( r + g + b ) > 0x10 )
1505             {
1506                 *destdata++ = 0xFF ;
1507                 *destdata++ = 0xFF ;
1508                 *destdata++ = 0xFF ;
1509                 *destdata++ = 0xFF ;
1510             }
1511             else
1512             {
1513                 *destdata++ = 0x00 ;
1514                 *destdata++ = 0x00 ;
1515                 *destdata++ = 0x00 ;
1516                 *destdata++ = 0x00 ;
1517             }
1518         }
1519     }
1520
1521     m_memBuf.UngetWriteBuf( size ) ;
1522     RealizeNative() ;
1523
1524     return true;
1525 }
1526
1527 // Create a mask from a bitmap and a colour indicating
1528 // the transparent area
1529 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1530 {
1531     m_width = bitmap.GetWidth() ;
1532     m_height = bitmap.GetHeight() ;
1533     m_bytesPerRow = ( m_width * 4 + 3 ) & 0xFFFFFFC ;
1534
1535     size_t size = m_bytesPerRow * m_height ;
1536     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1537     wxASSERT( destdatabase != NULL ) ;
1538
1539     memset( destdatabase , 0 , size ) ;
1540     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1541
1542     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow)
1543     {
1544         unsigned char *destdata = destdatabase ;
1545         unsigned char r, g, b;
1546
1547         for ( int x = 0 ; x < m_width ; ++x )
1548         {
1549             srcdata++ ;
1550             r = *srcdata++ ;
1551             g = *srcdata++ ;
1552             b = *srcdata++ ;
1553
1554             if ( colour == wxColour( r , g , b ) )
1555             {
1556                 *destdata++ = 0xFF ;
1557                 *destdata++ = 0xFF ;
1558                 *destdata++ = 0xFF ;
1559                 *destdata++ = 0xFF ;
1560             }
1561             else
1562             {
1563                 *destdata++ = 0x00 ;
1564                 *destdata++ = 0x00 ;
1565                 *destdata++ = 0x00 ;
1566                 *destdata++ = 0x00 ;
1567             }
1568         }
1569     }
1570
1571     m_memBuf.UngetWriteBuf( size ) ;
1572     RealizeNative() ;
1573
1574     return true;
1575 }
1576
1577 WXHBITMAP wxMask::GetHBITMAP() const
1578 {
1579     return m_maskBitmap ;
1580 }
1581
1582 // ----------------------------------------------------------------------------
1583 // wxBitmapHandler
1584 // ----------------------------------------------------------------------------
1585
1586 IMPLEMENT_ABSTRACT_CLASS(wxBitmapHandler, wxBitmapHandlerBase)
1587
1588 // ----------------------------------------------------------------------------
1589 // Standard Handlers
1590 // ----------------------------------------------------------------------------
1591
1592 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1593 {
1594     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1595
1596 public:
1597     inline wxPICTResourceHandler()
1598     {
1599         SetName(wxT("Macintosh Pict resource"));
1600         SetExtension(wxEmptyString);
1601         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1602     };
1603
1604     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1605           int desiredWidth, int desiredHeight);
1606 };
1607
1608 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1609
1610
1611 bool wxPICTResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1612           int desiredWidth, int desiredHeight)
1613 {
1614 #if wxUSE_METAFILE
1615     Str255 theName ;
1616     wxMacStringToPascal( name , theName ) ;
1617
1618     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1619     if ( thePict )
1620     {
1621         wxMetafile mf ;
1622
1623         mf.SetHMETAFILE( (WXHMETAFILE) thePict ) ;
1624         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1625         wxMemoryDC dc ;
1626         dc.SelectObject( *bitmap ) ;
1627         mf.Play( &dc ) ;
1628         dc.SelectObject( wxNullBitmap ) ;
1629
1630         return true ;
1631     }
1632 #endif
1633
1634     return false ;
1635 }
1636
1637 void wxBitmap::InitStandardHandlers()
1638 {
1639     AddHandler( new wxPICTResourceHandler ) ;
1640     AddHandler( new wxICONResourceHandler ) ;
1641 }
1642
1643 // ----------------------------------------------------------------------------
1644 // raw bitmap access support
1645 // ----------------------------------------------------------------------------
1646
1647 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1648 {
1649     if ( !Ok() )
1650         // no bitmap, no data (raw or otherwise)
1651         return NULL;
1652
1653     data.m_width = GetWidth() ;
1654     data.m_height = GetHeight() ;
1655     data.m_stride = GetWidth() * 4 ;
1656
1657     return BeginRawAccess() ;
1658 }
1659
1660 void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
1661 {
1662     EndRawAccess() ;
1663 }
1664
1665 void wxBitmap::UseAlpha()
1666 {
1667     // remember that we are using alpha channel:
1668     // we'll need to create a proper mask in UngetRawData()
1669     M_BITMAPDATA->UseAlpha( true );
1670 }