src/osx/core/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/core/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 #if wxOSX_USE_CARBON
  32 #include "wx/osx/uma.h"
  33 #else
  34 #include "wx/osx/private.h"
  35 #endif
  36
  37 #ifndef __WXOSX_IPHONE__
  38 #include <QuickTime/QuickTime.h>
  39 #endif
  40
  41 CGColorSpaceRef wxMacGetGenericRGBColorSpace();
  42 CGDataProviderRef wxMacCGDataProviderCreateWithMemoryBuffer( const wxMemoryBuffer& buf );
  43
  44 // Implementation Notes
  45 // --------------------
  46 //
  47 // we are always working with a 32 bit deep pixel buffer
  48 // under QuickDraw its alpha parts are going to be ignored in the GWorld,
  49 // therefore we have a separate GWorld there for blitting the mask in
  50
  51 // under Quartz then content is transformed into a CGImageRef representing the same data
  52 // which can be transferred to the GPU by the OS for fast rendering
  53
  54 class WXDLLEXPORT wxBitmapRefData: public wxGDIRefData
  55 {
  56     friend class WXDLLIMPEXP_FWD_CORE wxIcon;
  57     friend class WXDLLIMPEXP_FWD_CORE wxCursor;
  58 public:
  59     wxBitmapRefData(int width , int height , int depth);
  60     wxBitmapRefData(CGImageRef image);
  61     wxBitmapRefData();
  62     wxBitmapRefData(const wxBitmapRefData &tocopy);
  63
  64     virtual ~wxBitmapRefData();
  65
  66     virtual bool IsOk() const { return m_ok; }
  67
  68     void Free();
  69     void SetOk( bool isOk) { m_ok = isOk; }
  70
  71     void SetWidth( int width ) { m_width = width; }
  72     void SetHeight( int height ) { m_height = height; }
  73     void SetDepth( int depth ) { m_depth = depth; }
  74
  75     int GetWidth() const { return m_width; }
  76     int GetHeight() const { return m_height; }
  77     int GetDepth() const { return m_depth; }
  78
  79     void *GetRawAccess() const;
  80     void *BeginRawAccess();
  81     void EndRawAccess();
  82
  83     bool HasAlpha() const { return m_hasAlpha; }
  84     void UseAlpha( bool useAlpha );
  85
  86 public:
  87 #if wxUSE_PALETTE
  88     wxPalette     m_bitmapPalette;
  89 #endif // wxUSE_PALETTE
  90
  91     wxMask *      m_bitmapMask; // Optional mask
  92     CGImageRef    CreateCGImage() const;
  93
  94     // returns true if the bitmap has a size that
  95     // can be natively transferred into a true icon
  96     // if no is returned GetIconRef will still produce
  97     // an icon but it will be generated via a PICT and
  98     // rescaled to 16 x 16
  99     bool          HasNativeSize();
 100
 101     // caller should increase ref count if needed longer
 102     // than the bitmap exists
 103     IconRef       GetIconRef();
 104
 105 #ifndef __WXOSX_IPHONE__
 106     // returns a Pict from the bitmap content
 107     PicHandle     GetPictHandle();
 108 #endif
 109
 110     CGContextRef  GetBitmapContext() const;
 111
 112     int           GetBytesPerRow() const { return m_bytesPerRow; }
 113     private :
 114     bool Create(int width , int height , int depth);
 115     bool Create( CGImageRef image );
 116     void Init();
 117
 118     int           m_width;
 119     int           m_height;
 120     int           m_bytesPerRow;
 121     int           m_depth;
 122     bool          m_hasAlpha;
 123     wxMemoryBuffer m_memBuf;
 124     int           m_rawAccessCount;
 125     bool          m_ok;
 126     mutable CGImageRef    m_cgImageRef;
 127
 128     IconRef       m_iconRef;
 129 #ifndef __WXOSX_IPHONE__
 130     PicHandle     m_pictHandle;
 131 #endif
 132     CGContextRef  m_hBitmap;
 133 };
 134
 135
 136 #define wxOSX_USE_PREMULTIPLIED_ALPHA 1
 137 static const int kBestByteAlignement = 16;
 138 static const int kMaskBytesPerPixel = 1;
 139
 140 static int GetBestBytesPerRow( int rawBytes )
 141 {
 142     return (((rawBytes)+kBestByteAlignement-1) & ~(kBestByteAlignement-1) );
 143 }
 144
 145 #if wxUSE_GUI && !defined(__WXOSX_IPHONE__)
 146
 147 // this is used for more controls than just the wxBitmap button, also for notebooks etc
 148
 149 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
 150 {
 151     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
 152     if ( bitmap.Ok() )
 153     {
 154         wxBitmapRefData * bmap = bitmap.GetBitmapData() ;
 155         if ( bmap == NULL )
 156             return ;
 157
 158         if ( forceType == 0  )
 159         {
 160             forceType = kControlContentCGImageRef;
 161         }
 162
 163         if ( forceType == kControlContentIconRef )
 164         {
 165             wxBitmap scaleBmp ;
 166             wxBitmapRefData* bmp = bmap ;
 167
 168             if ( !bmap->HasNativeSize() )
 169             {
 170                 // as PICT conversion will only result in a 16x16 icon, let's attempt
 171                 // a few scales for better results
 172
 173                 int w = bitmap.GetWidth() ;
 174                 int h = bitmap.GetHeight() ;
 175                 int sz = wxMax( w , h ) ;
 176                 if ( sz == 24 || sz == 64 )
 177                 {
 178                     scaleBmp = wxBitmap( bitmap.ConvertToImage().Scale( w * 2 , h * 2 ) ) ;
 179                     bmp = scaleBmp.GetBitmapData() ;
 180                 }
 181             }
 182
 183             info->contentType = kControlContentIconRef ;
 184             info->u.iconRef = bmp->GetIconRef() ;
 185             AcquireIconRef( info->u.iconRef ) ;
 186         }
 187         else if ( forceType == kControlContentCGImageRef )
 188         {
 189             info->contentType = kControlContentCGImageRef ;
 190             info->u.imageRef = (CGImageRef) bmap->CreateCGImage() ;
 191         }
 192         else
 193         {
 194 #ifndef __LP64__
 195             info->contentType = kControlContentPictHandle ;
 196             info->u.picture = bmap->GetPictHandle() ;
 197 #endif
 198         }
 199     }
 200 }
 201
 202 CGImageRef wxMacCreateCGImageFromBitmap( const wxBitmap& bitmap )
 203 {
 204     wxBitmapRefData * bmap = bitmap.GetBitmapData() ;
 205     if ( bmap == NULL )
 206         return NULL ;
 207     return (CGImageRef) bmap->CreateCGImage();
 208 }
 209
 210 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
 211 {
 212     if ( info->contentType == kControlContentIconRef )
 213     {
 214         ReleaseIconRef( info->u.iconRef ) ;
 215     }
 216     else if ( info->contentType == kControlNoContent )
 217     {
 218         // there's no bitmap at all, fall through silently
 219     }
 220     else if ( info->contentType == kControlContentPictHandle )
 221     {
 222         // owned by the bitmap, no release here
 223     }
 224     else if ( info->contentType == kControlContentCGImageRef )
 225     {
 226         CGImageRelease( info->u.imageRef ) ;
 227     }
 228     else
 229     {
 230         wxFAIL_MSG(wxT("Unexpected bitmap type") ) ;
 231     }
 232 }
 233
 234 #endif //wxUSE_BMPBUTTON
 235
 236 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
 237
 238 void wxBitmapRefData::Init()
 239 {
 240     m_width = 0 ;
 241     m_height = 0 ;
 242     m_depth = 0 ;
 243     m_bytesPerRow = 0;
 244     m_ok = false ;
 245     m_bitmapMask = NULL ;
 246     m_cgImageRef = NULL ;
 247
 248 #ifndef __WXOSX_IPHONE__
 249     m_iconRef = NULL ;
 250     m_pictHandle = NULL ;
 251 #endif
 252     m_hBitmap = NULL ;
 253
 254     m_rawAccessCount = 0 ;
 255     m_hasAlpha = false;
 256 }
 257
 258 wxBitmapRefData::wxBitmapRefData(const wxBitmapRefData &tocopy)
 259 {
 260     Init();
 261     Create(tocopy.m_width, tocopy.m_height, tocopy.m_depth);
 262
 263     if (tocopy.m_bitmapMask)
 264         m_bitmapMask = new wxMask(*tocopy.m_bitmapMask);
 265     else if (tocopy.m_hasAlpha)
 266         UseAlpha(true);
 267
 268     unsigned char* dest = (unsigned char*)GetRawAccess();
 269     unsigned char* source = (unsigned char*)tocopy.GetRawAccess();
 270     size_t numbytes = m_bytesPerRow * m_height;
 271     memcpy( dest, source, numbytes );
 272 }
 273
 274 wxBitmapRefData::wxBitmapRefData()
 275 {
 276     Init() ;
 277 }
 278
 279 wxBitmapRefData::wxBitmapRefData( int w , int h , int d )
 280 {
 281     Init() ;
 282     Create( w , h , d ) ;
 283 }
 284
 285 wxBitmapRefData::wxBitmapRefData(CGImageRef image)
 286 {
 287     Init();
 288     Create( image );
 289 }
 290 // code from Technical Q&A QA1509
 291
 292 bool wxBitmapRefData::Create(CGImageRef image)
 293 {
 294     m_width = CGImageGetWidth(image);
 295     m_height = CGImageGetHeight(image);
 296     m_depth = 32;
 297     m_hBitmap = NULL;
 298
 299     m_bytesPerRow = GetBestBytesPerRow( m_width * 4 ) ;
 300     size_t size = m_bytesPerRow * m_height ;
 301     void* data = m_memBuf.GetWriteBuf( size ) ;
 302     if ( data != NULL )
 303     {
 304         memset( data , 0 , size ) ;
 305         m_memBuf.UngetWriteBuf( size ) ;
 306         CGImageAlphaInfo alpha = CGImageGetAlphaInfo(image);
 307         if ( alpha == kCGImageAlphaNone || alpha == kCGImageAlphaNoneSkipLast || alpha == kCGImageAlphaNoneSkipLast )
 308         {
 309             m_hBitmap = CGBitmapContextCreate((char*) data, m_width, m_height, 8, m_bytesPerRow, wxMacGetGenericRGBColorSpace(), kCGImageAlphaNoneSkipFirst );
 310         }
 311         else
 312         {
 313             m_hasAlpha = true;
 314             m_hBitmap = CGBitmapContextCreate((char*) data, m_width, m_height, 8, m_bytesPerRow, wxMacGetGenericRGBColorSpace(), kCGImageAlphaPremultipliedFirst );
 315         }
 316         CGRect rect = {{0,0},{m_width,m_height}};
 317         CGContextDrawImage(m_hBitmap, rect, image);
 318
 319         wxASSERT_MSG( m_hBitmap , wxT("Unable to create CGBitmapContext context") ) ;
 320         CGContextTranslateCTM( m_hBitmap, 0,  m_height );
 321         CGContextScaleCTM( m_hBitmap, 1, -1 );
 322     } /* data != NULL */
 323     m_ok = ( m_hBitmap != NULL ) ;
 324
 325     return m_ok ;
 326
 327 }
 328
 329 bool wxBitmapRefData::Create( int w , int h , int d )
 330 {
 331     m_width = wxMax(1, w);
 332     m_height = wxMax(1, h);
 333     m_depth = d ;
 334     m_hBitmap = NULL ;
 335
 336     m_bytesPerRow = GetBestBytesPerRow( m_width * 4 ) ;
 337     size_t size = m_bytesPerRow * m_height ;
 338     void* data = m_memBuf.GetWriteBuf( size ) ;
 339     if ( data != NULL )
 340     {
 341         memset( data , 0 , size ) ;
 342         m_memBuf.UngetWriteBuf( size ) ;
 343
 344         m_hBitmap = CGBitmapContextCreate((char*) data, m_width, m_height, 8, m_bytesPerRow, wxMacGetGenericRGBColorSpace(), kCGImageAlphaNoneSkipFirst );
 345         wxASSERT_MSG( m_hBitmap , wxT("Unable to create CGBitmapContext context") ) ;
 346         CGContextTranslateCTM( m_hBitmap, 0,  m_height );
 347         CGContextScaleCTM( m_hBitmap, 1, -1 );
 348     } /* data != NULL */
 349     m_ok = ( m_hBitmap != NULL ) ;
 350
 351     return m_ok ;
 352 }
 353
 354 void wxBitmapRefData::UseAlpha( bool use )
 355 {
 356     if ( m_hasAlpha == use )
 357         return ;
 358
 359     m_hasAlpha = use ;
 360
 361     CGContextRelease( m_hBitmap );
 362     m_hBitmap = CGBitmapContextCreate((char*) m_memBuf.GetData(), m_width, m_height, 8, m_bytesPerRow, wxMacGetGenericRGBColorSpace(), m_hasAlpha ? kCGImageAlphaPremultipliedFirst : kCGImageAlphaNoneSkipFirst );
 363     wxASSERT_MSG( m_hBitmap , wxT("Unable to create CGBitmapContext context") ) ;
 364     CGContextTranslateCTM( m_hBitmap, 0,  m_height );
 365     CGContextScaleCTM( m_hBitmap, 1, -1 );
 366 }
 367
 368 void *wxBitmapRefData::GetRawAccess() const
 369 {
 370     wxCHECK_MSG( IsOk(), NULL , wxT("invalid bitmap") ) ;
 371     return m_memBuf.GetData() ;
 372 }
 373
 374 void *wxBitmapRefData::BeginRawAccess()
 375 {
 376     wxCHECK_MSG( IsOk(), NULL, wxT("invalid bitmap") ) ;
 377     wxASSERT( m_rawAccessCount == 0 ) ;
 378 #ifndef __WXOSX_IPHONE__
 379     wxASSERT_MSG( m_pictHandle == NULL && m_iconRef == NULL ,
 380         wxT("Currently, modifing bitmaps that are used in controls already is not supported") ) ;
 381 #endif
 382     ++m_rawAccessCount ;
 383
 384     // we must destroy an existing cached image, as
 385     // the bitmap data may change now
 386     if ( m_cgImageRef )
 387     {
 388         CGImageRelease( m_cgImageRef ) ;
 389         m_cgImageRef = NULL ;
 390     }
 391
 392     return m_memBuf.GetData() ;
 393 }
 394
 395 void wxBitmapRefData::EndRawAccess()
 396 {
 397     wxCHECK_RET( IsOk() , wxT("invalid bitmap") ) ;
 398     wxASSERT( m_rawAccessCount == 1 ) ;
 399
 400     --m_rawAccessCount ;
 401 }
 402
 403 bool wxBitmapRefData::HasNativeSize()
 404 {
 405     int w = GetWidth() ;
 406     int h = GetHeight() ;
 407     int sz = wxMax( w , h ) ;
 408
 409     return ( sz == 128 || sz == 48 || sz == 32 || sz == 16 );
 410 }
 411
 412 #ifndef __WXOSX_IPHONE__
 413 IconRef wxBitmapRefData::GetIconRef()
 414 {
 415     if ( m_iconRef == NULL )
 416     {
 417         // Create Icon Family Handle
 418
 419         IconFamilyHandle iconFamily = (IconFamilyHandle) NewHandle( 0 );
 420
 421         int w = GetWidth() ;
 422         int h = GetHeight() ;
 423         int sz = wxMax( w , h ) ;
 424
 425         OSType dataType = 0 ;
 426         OSType maskType = 0 ;
 427
 428         switch (sz)
 429         {
 430             case 128:
 431 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 432                 if ( UMAGetSystemVersion() >= 0x1050 )
 433                 {
 434                     dataType = kIconServices128PixelDataARGB ;
 435                 }
 436                 else
 437 #endif
 438                 {
 439                     dataType = kThumbnail32BitData ;
 440                     maskType = kThumbnail8BitMask ;
 441                 }
 442                 break;
 443
 444             case 48:
 445 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 446                 if ( UMAGetSystemVersion() >= 0x1050 )
 447                 {
 448                     dataType = kIconServices48PixelDataARGB ;
 449                 }
 450                 else
 451 #endif
 452                 {
 453                     dataType = kHuge32BitData ;
 454                     maskType = kHuge8BitMask ;
 455                 }
 456                 break;
 457
 458             case 32:
 459 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 460                 if ( UMAGetSystemVersion() >= 0x1050 )
 461                 {
 462                     dataType = kIconServices32PixelDataARGB ;
 463                 }
 464                 else
 465 #endif
 466                 {
 467                     dataType = kLarge32BitData ;
 468                     maskType = kLarge8BitMask ;
 469                 }
 470                 break;
 471
 472             case 16:
 473 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 474                 if ( UMAGetSystemVersion() >= 0x1050 )
 475                 {
 476                     dataType = kIconServices16PixelDataARGB ;
 477                 }
 478                 else
 479 #endif
 480                 {
 481                     dataType = kSmall32BitData ;
 482                     maskType = kSmall8BitMask ;
 483                 }
 484                 break;
 485
 486             default:
 487                 break;
 488         }
 489
 490         if ( dataType != 0 )
 491         {
 492 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
 493             if (  maskType == 0 && UMAGetSystemVersion() >= 0x1050 )
 494             {
 495                 size_t datasize = sz * sz * 4 ;
 496                 Handle data = NewHandle( datasize ) ;
 497                 HLock( data ) ;
 498                 unsigned char* ptr = (unsigned char*) *data ;
 499                 memset( ptr, 0, datasize );
 500                 bool hasAlpha = HasAlpha() ;
 501                 wxMask *mask = m_bitmapMask ;
 502                 unsigned char * sourcePtr = (unsigned char*) GetRawAccess() ;
 503                 unsigned char * masksourcePtr = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 504
 505                 for ( int y = 0 ; y < h ; ++y, sourcePtr += m_bytesPerRow , masksourcePtr += mask ? mask->GetBytesPerRow() : 0 )
 506                 {
 507                     unsigned char * source = sourcePtr;
 508                     unsigned char * masksource = masksourcePtr;
 509                     unsigned char * dest = ptr + y * sz * 4 ;
 510                     unsigned char a, r, g, b;
 511
 512                     for ( int x = 0 ; x < w ; ++x )
 513                     {
 514                         a = *source ++ ;
 515                         r = *source ++ ;
 516                         g = *source ++ ;
 517                         b = *source ++ ;
 518
 519                         if ( mask )
 520                         {
 521                             a = 0xFF - *masksource++ ;
 522                         }
 523                         else if ( !hasAlpha )
 524                             a = 0xFF ;
 525                         else
 526                         {
 527 #if wxOSX_USE_PREMULTIPLIED_ALPHA
 528                             // this must be non-premultiplied data
 529                             if ( a != 0xFF && a!= 0 )
 530                             {
 531                                 r = r * 255 / a;
 532                                 g = g * 255 / a;
 533                                 b = b * 255 / a;
 534                             }
 535 #endif
 536                         }
 537                         *dest++ = a ;
 538                         *dest++ = r ;
 539                         *dest++ = g ;
 540                         *dest++ = b ;
 541
 542                      }
 543                 }
 544                 HUnlock( data );
 545
 546                 OSStatus err = SetIconFamilyData( iconFamily, dataType , data );
 547                 if ( err != noErr )
 548                 {
 549                     wxFAIL_MSG("Error when adding bitmap");
 550                 }
 551
 552                 DisposeHandle( data );
 553             }
 554             else
 555 #endif
 556             {
 557                 // setup the header properly
 558
 559                 Handle data = NULL ;
 560                 Handle maskdata = NULL ;
 561                 unsigned char * maskptr = NULL ;
 562                 unsigned char * ptr = NULL ;
 563                 size_t datasize, masksize ;
 564
 565                 datasize = sz * sz * 4 ;
 566                 data = NewHandle( datasize ) ;
 567                 HLock( data ) ;
 568                 ptr = (unsigned char*) *data ;
 569                 memset( ptr , 0, datasize ) ;
 570
 571                 masksize = sz * sz ;
 572                 maskdata = NewHandle( masksize ) ;
 573                 HLock( maskdata ) ;
 574                 maskptr = (unsigned char*) *maskdata ;
 575                 memset( maskptr , 0 , masksize ) ;
 576
 577                 bool hasAlpha = HasAlpha() ;
 578                 wxMask *mask = m_bitmapMask ;
 579                 unsigned char * sourcePtr = (unsigned char*) GetRawAccess() ;
 580                 unsigned char * masksourcePtr = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 581
 582                 for ( int y = 0 ; y < h ; ++y, sourcePtr += m_bytesPerRow , masksourcePtr += mask ? mask->GetBytesPerRow() : 0 )
 583                 {
 584                     unsigned char * source = sourcePtr;
 585                     unsigned char * masksource = masksourcePtr;
 586                     unsigned char * dest = ptr + y * sz * 4 ;
 587                     unsigned char * maskdest = maskptr + y * sz ;
 588                     unsigned char a, r, g, b;
 589
 590                     for ( int x = 0 ; x < w ; ++x )
 591                     {
 592                         a = *source ++ ;
 593                         r = *source ++ ;
 594                         g = *source ++ ;
 595                         b = *source ++ ;
 596
 597                         *dest++ = 0 ;
 598                         *dest++ = r ;
 599                         *dest++ = g ;
 600                         *dest++ = b ;
 601
 602                         if ( mask )
 603                             *maskdest++ = 0xFF - *masksource++ ;
 604                         else if ( hasAlpha )
 605                             *maskdest++ = a ;
 606                         else
 607                             *maskdest++ = 0xFF ;
 608                     }
 609                 }
 610
 611                 OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 612                 wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 613
 614                 err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 615                 wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 616
 617                 HUnlock( data ) ;
 618                 HUnlock( maskdata ) ;
 619                 DisposeHandle( data ) ;
 620                 DisposeHandle( maskdata ) ;
 621             }
 622         }
 623         else
 624         {
 625             PicHandle pic = GetPictHandle() ;
 626             SetIconFamilyData( iconFamily, 'PICT' , (Handle) pic ) ;
 627         }
 628         // transform into IconRef
 629
 630         // cleaner version existing from 10.3 upwards
 631         HLock((Handle) iconFamily);
 632         OSStatus err = GetIconRefFromIconFamilyPtr( *iconFamily, GetHandleSize((Handle) iconFamily), &m_iconRef );
 633         HUnlock((Handle) iconFamily);
 634         DisposeHandle( (Handle) iconFamily ) ;
 635
 636         wxCHECK_MSG( err == noErr, NULL, wxT("Error when constructing icon ref") );
 637     }
 638
 639     return m_iconRef ;
 640 }
 641
 642 PicHandle wxBitmapRefData::GetPictHandle()
 643 {
 644     if ( m_pictHandle == NULL )
 645     {
 646 #ifndef __LP64__
 647         GraphicsExportComponent exporter = 0;
 648         OSStatus err = OpenADefaultComponent(GraphicsExporterComponentType, kQTFileTypePicture, &exporter);
 649         if (noErr == err)
 650         {
 651             m_pictHandle = (PicHandle) NewHandle(0);
 652             if ( m_pictHandle )
 653             {
 654                 // QT does not correctly export the mask
 655                 // TODO if we get around to it create a synthetic PICT with the CopyBits and Mask commands
 656                 CGImageRef imageRef = CreateCGImage();
 657                 err = GraphicsExportSetInputCGImage( exporter, imageRef );
 658                 err = GraphicsExportSetOutputHandle(exporter, (Handle)m_pictHandle);
 659                 err = GraphicsExportDoExport(exporter, NULL);
 660                 CGImageRelease( imageRef );
 661
 662                 size_t handleSize = GetHandleSize( (Handle) m_pictHandle );
 663                 // the 512 bytes header is only needed for pict files, but not in memory
 664                 if ( handleSize >= 512 )
 665                 {
 666                     memmove( *m_pictHandle , (char*)(*m_pictHandle)+512, handleSize - 512 );
 667                     SetHandleSize( (Handle) m_pictHandle, handleSize - 512 );
 668                 }
 669             }
 670             CloseComponent( exporter );
 671         }
 672 #endif
 673     }
 674
 675     return m_pictHandle ;
 676 }
 677 #endif
 678
 679 CGImageRef wxBitmapRefData::CreateCGImage() const
 680 {
 681     wxASSERT( m_ok ) ;
 682     wxASSERT( m_rawAccessCount >= 0 ) ;
 683     CGImageRef image ;
 684     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 685     {
 686         if ( m_depth != 1 && m_bitmapMask == NULL )
 687         {
 688 #if 0
 689             // in order for this code to work properly, wxMask would have to invert black and white
 690             // in the native bitmap
 691             if ( m_bitmapMask )
 692             {
 693                 CGImageRef tempImage = CGBitmapContextCreateImage( m_hBitmap );
 694                 CGImageRef tempMask = CGBitmapContextCreateImage((CGContextRef) m_bitmapMask->GetHBITMAP() );
 695                 image = CGImageCreateWithMask( tempImage, tempMask );
 696                 CGImageRelease(tempMask);
 697                 CGImageRelease(tempImage);
 698             }
 699             else
 700 #endif
 701                 image = CGBitmapContextCreateImage( m_hBitmap );
 702         }
 703         else
 704         {
 705             size_t imageSize = m_height * m_bytesPerRow ;
 706             void * dataBuffer = m_memBuf.GetData() ;
 707             int w = m_width ;
 708             int h = m_height ;
 709             CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 710             wxMemoryBuffer membuf;
 711
 712             if ( m_bitmapMask )
 713             {
 714                 alphaInfo = kCGImageAlphaFirst ;
 715                 unsigned char *destalphastart = (unsigned char*) membuf.GetWriteBuf( imageSize ) ;
 716                 memcpy( destalphastart , dataBuffer , imageSize ) ;
 717                 unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 718                 int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 719                 for ( int y = 0 ; y < h ; ++y , destalphastart += m_bytesPerRow, sourcemaskstart += maskrowbytes)
 720                 {
 721                     unsigned char *sourcemask = sourcemaskstart ;
 722                     unsigned char *destalpha = destalphastart ;
 723                     for ( int x = 0 ; x < w ; ++x , sourcemask += kMaskBytesPerPixel , destalpha += 4 )
 724                     {
 725                         *destalpha = 0xFF - *sourcemask ;
 726                     }
 727                 }
 728                 membuf.UngetWriteBuf( imageSize );
 729             }
 730             else
 731             {
 732                 if ( m_hasAlpha )
 733                 {
 734 #if wxOSX_USE_PREMULTIPLIED_ALPHA
 735                     alphaInfo = kCGImageAlphaPremultipliedFirst ;
 736 #else
 737                     alphaInfo = kCGImageAlphaFirst ;
 738 #endif
 739                 }
 740
 741                 membuf = m_memBuf;
 742             }
 743
 744             CGDataProviderRef dataProvider = NULL ;
 745             if ( m_depth == 1 )
 746             {
 747                 // TODO CHECK ALIGNMENT
 748                 wxMemoryBuffer maskBuf;
 749                 unsigned char * maskBufData = (unsigned char*) maskBuf.GetWriteBuf( m_width * m_height );
 750                 unsigned char * bufData = (unsigned char *) membuf.GetData() ;
 751                 // copy one color component
 752                 size_t i = 0;
 753                 for( int y = 0 ; y < m_height ; bufData+= m_bytesPerRow, ++y )
 754                 {
 755                     unsigned char *bufDataIter = bufData+3;
 756                     for ( int x = 0 ; x < m_width ; bufDataIter += 4, ++x, ++i )
 757                     {
 758                         maskBufData[i] = *bufDataIter;
 759                     }
 760                 }
 761                 maskBuf.UngetWriteBuf( m_width * m_height );
 762
 763                 dataProvider =
 764                     wxMacCGDataProviderCreateWithMemoryBuffer( maskBuf );
 765
 766                 image = ::CGImageMaskCreate( w, h, 8, 8, m_width , dataProvider, NULL, false );
 767             }
 768             else
 769             {
 770                 CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 771                 dataProvider = wxMacCGDataProviderCreateWithMemoryBuffer( membuf );
 772                 image =
 773                     ::CGImageCreate(
 774                                     w, h, 8 , 32 , m_bytesPerRow , colorSpace, alphaInfo ,
 775                                     dataProvider, NULL , false , kCGRenderingIntentDefault );
 776             }
 777             CGDataProviderRelease( dataProvider);
 778         }
 779     }
 780     else
 781     {
 782         image = m_cgImageRef ;
 783         CGImageRetain( image ) ;
 784     }
 785
 786     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 787     {
 788         // we keep it for later use
 789         m_cgImageRef = image ;
 790         CGImageRetain( image ) ;
 791     }
 792
 793     return image ;
 794 }
 795
 796 CGContextRef wxBitmapRefData::GetBitmapContext() const
 797 {
 798     return m_hBitmap;
 799 }
 800
 801 void wxBitmapRefData::Free()
 802 {
 803     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 804
 805     if ( m_cgImageRef )
 806     {
 807         CGImageRelease( m_cgImageRef ) ;
 808         m_cgImageRef = NULL ;
 809     }
 810 #ifndef __WXOSX_IPHONE__
 811     if ( m_iconRef )
 812     {
 813         ReleaseIconRef( m_iconRef ) ;
 814         m_iconRef = NULL ;
 815     }
 816
 817 #ifndef __LP64__
 818     if ( m_pictHandle )
 819     {
 820         KillPicture( m_pictHandle ) ;
 821         m_pictHandle = NULL ;
 822     }
 823 #endif
 824 #endif
 825     if ( m_hBitmap )
 826     {
 827         CGContextRelease(m_hBitmap);
 828         m_hBitmap = NULL ;
 829     }
 830
 831     wxDELETE(m_bitmapMask);
 832 }
 833
 834 wxBitmapRefData::~wxBitmapRefData()
 835 {
 836     Free() ;
 837 }
 838
 839
 840
 841 // ----------------------------------------------------------------------------
 842 // wxBitmap
 843 // ----------------------------------------------------------------------------
 844
 845 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 846 {
 847     bool created = false ;
 848     int w = icon.GetWidth() ;
 849     int h = icon.GetHeight() ;
 850
 851     Create( w , h ) ;
 852 #ifdef __WXOSX_CARBON__
 853     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 854     {
 855         IconFamilyHandle iconFamily = NULL ;
 856         Handle imagehandle = NewHandle( 0 ) ;
 857         Handle maskhandle = NewHandle( 0 ) ;
 858
 859         OSType maskType = 0;
 860         OSType dataType = 0;
 861         IconSelectorValue selector = 0 ;
 862
 863         switch (w)
 864         {
 865             case 128:
 866                 dataType = kThumbnail32BitData ;
 867                 maskType = kThumbnail8BitMask ;
 868                 selector = kSelectorAllAvailableData ;
 869                 break;
 870
 871             case 48:
 872                 dataType = kHuge32BitData ;
 873                 maskType = kHuge8BitMask ;
 874                 selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 875                 break;
 876
 877             case 32:
 878                 dataType = kLarge32BitData ;
 879                 maskType = kLarge8BitMask ;
 880                 selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 881                 break;
 882
 883             case 16:
 884                 dataType = kSmall32BitData ;
 885                 maskType = kSmall8BitMask ;
 886                 selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 887                 break;
 888
 889             default:
 890                 break;
 891         }
 892
 893         OSStatus err = IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ;
 894
 895         err = GetIconFamilyData( iconFamily , dataType , imagehandle ) ;
 896         err = GetIconFamilyData( iconFamily , maskType , maskhandle ) ;
 897         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 898         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 899
 900         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 901         {
 902             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 903             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 904
 905             UseAlpha() ;
 906
 907             unsigned char *source = (unsigned char *) *imagehandle ;
 908             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 909             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 910
 911             for ( int y = 0 ; y < h ; ++y )
 912             {
 913                 for ( int x = 0 ; x < w ; ++x )
 914                 {
 915                     unsigned char a = *sourcemask++;
 916                     *destination++ = a;
 917                     source++ ;
 918 #if wxOSX_USE_PREMULTIPLIED_ALPHA
 919                     *destination++ = ( (*source++) * a + 127 ) / 255;
 920                     *destination++ = ( (*source++) * a + 127 ) / 255;
 921                     *destination++ = ( (*source++) * a + 127 ) / 255;
 922 #else
 923                     *destination++ = *source++ ;
 924                     *destination++ = *source++ ;
 925                     *destination++ = *source++ ;
 926 #endif
 927                 }
 928             }
 929
 930             EndRawAccess() ;
 931             DisposeHandle( imagehandle ) ;
 932             DisposeHandle( maskhandle ) ;
 933             created = true ;
 934         }
 935
 936         DisposeHandle( (Handle) iconFamily ) ;
 937     }
 938 #endif
 939     if ( !created )
 940     {
 941         wxMemoryDC dc ;
 942         dc.SelectObject( *this ) ;
 943         dc.DrawIcon( icon , 0 , 0 ) ;
 944         dc.SelectObject( wxNullBitmap ) ;
 945     }
 946
 947     return true;
 948 }
 949
 950 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 951 {
 952     wxBitmapRefData* bitmapRefData;
 953
 954     m_refData = bitmapRefData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 955
 956     if (bitmapRefData->IsOk())
 957     {
 958         if ( no_bits == 1 )
 959         {
 960             int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 961             if ( the_width % (sizeof(unsigned char) * 8) )
 962                 linesize += sizeof(unsigned char);
 963
 964             unsigned char* linestart = (unsigned char*) bits ;
 965             unsigned char* destptr = (unsigned char*) BeginRawAccess() ;
 966
 967             for ( int y = 0 ; y < the_height ; ++y , linestart += linesize, destptr += M_BITMAPDATA->GetBytesPerRow() )
 968             {
 969                 unsigned char* destination = destptr;
 970                 int index, bit, mask;
 971
 972                 for ( int x = 0 ; x < the_width ; ++x )
 973                 {
 974                     index = x / 8 ;
 975                     bit = x % 8 ;
 976                     mask = 1 << bit ;
 977
 978                     if ( linestart[index] & mask )
 979                     {
 980                         *destination++ = 0xFF ;
 981                         *destination++ = 0 ;
 982                         *destination++ = 0 ;
 983                         *destination++ = 0 ;
 984                     }
 985                     else
 986                     {
 987                         *destination++ = 0xFF ;
 988                         *destination++ = 0xFF ;
 989                         *destination++ = 0xFF ;
 990                         *destination++ = 0xFF ;
 991                     }
 992                 }
 993             }
 994
 995             EndRawAccess() ;
 996         }
 997         else
 998         {
 999             wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
1000         }
1001     } /* bitmapRefData->IsOk() */
1002 }
1003
1004 wxBitmap::wxBitmap(const void* data, wxBitmapType type, int width, int height, int depth)
1005 {
1006     (void) Create(data, type, width, height, depth);
1007 }
1008
1009 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
1010 {
1011     LoadFile(filename, type);
1012 }
1013
1014 wxGDIRefData* wxBitmap::CreateGDIRefData() const
1015 {
1016     return new wxBitmapRefData;
1017 }
1018
1019 wxGDIRefData* wxBitmap::CloneGDIRefData(const wxGDIRefData* data) const
1020 {
1021     return new wxBitmapRefData(*static_cast<const wxBitmapRefData *>(data));
1022 }
1023
1024 void * wxBitmap::GetRawAccess() const
1025 {
1026     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
1027
1028     return M_BITMAPDATA->GetRawAccess() ;
1029 }
1030
1031 void * wxBitmap::BeginRawAccess()
1032 {
1033     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
1034
1035     return M_BITMAPDATA->BeginRawAccess() ;
1036 }
1037
1038 void wxBitmap::EndRawAccess()
1039 {
1040     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
1041
1042     M_BITMAPDATA->EndRawAccess() ;
1043 }
1044
1045 CGImageRef wxBitmap::CreateCGImage() const
1046 {
1047     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
1048
1049     return M_BITMAPDATA->CreateCGImage() ;
1050 }
1051
1052 #ifndef  __WXOSX_IPHONE__
1053 IconRef wxBitmap::GetIconRef() const
1054 {
1055     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
1056
1057     return M_BITMAPDATA->GetIconRef() ;
1058 }
1059
1060 IconRef wxBitmap::CreateIconRef() const
1061 {
1062     IconRef icon = GetIconRef();
1063     verify_noerr( AcquireIconRef(icon) );
1064     return icon;
1065 }
1066 #endif
1067
1068 #if wxOSX_USE_COCOA
1069
1070 WX_NSImage wxBitmap::GetNSImage() const
1071 {
1072     wxCFRef< CGImageRef > cgimage(CreateCGImage());
1073     return wxOSXGetNSImageFromCGImage( cgimage );
1074 }
1075
1076 #endif
1077
1078 #if wxOSX_USE_IPHONE
1079
1080 WX_UIImage wxBitmap::GetUIImage() const
1081 {
1082     wxCFRef< CGImageRef > cgimage(CreateCGImage());
1083     return wxOSXGetUIImageFromCGImage( cgimage );
1084 }
1085
1086 #endif
1087 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
1088 {
1089     wxCHECK_MSG( Ok() &&
1090                 (rect.x >= 0) && (rect.y >= 0) &&
1091                 (rect.x+rect.width <= GetWidth()) &&
1092                 (rect.y+rect.height <= GetHeight()),
1093                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
1094
1095     wxBitmap ret( rect.width, rect.height, GetDepth() );
1096     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
1097
1098     int destwidth = rect.width ;
1099     int destheight = rect.height ;
1100
1101     {
1102         unsigned char *sourcedata = (unsigned char*) GetRawAccess() ;
1103         unsigned char *destdata = (unsigned char*) ret.BeginRawAccess() ;
1104         wxASSERT( (sourcedata != NULL) && (destdata != NULL) ) ;
1105
1106         int sourcelinesize = GetBitmapData()->GetBytesPerRow() ;
1107         int destlinesize = ret.GetBitmapData()->GetBytesPerRow() ;
1108         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
1109         unsigned char *dest = destdata ;
1110
1111         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
1112         {
1113             memcpy( dest , source , destlinesize ) ;
1114         }
1115     }
1116
1117     ret.EndRawAccess() ;
1118
1119     if ( M_BITMAPDATA->m_bitmapMask )
1120     {
1121         wxMemoryBuffer maskbuf ;
1122         int rowBytes = GetBestBytesPerRow( destwidth * kMaskBytesPerPixel );
1123         size_t maskbufsize = rowBytes * destheight ;
1124
1125         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow() ;
1126         int destlinesize = rowBytes ;
1127
1128         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
1129         unsigned char *destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
1130         wxASSERT( (source != NULL) && (destdata != NULL) ) ;
1131
1132         source += rect.x * kMaskBytesPerPixel + rect.y * sourcelinesize ;
1133         unsigned char *dest = destdata ;
1134
1135         for (int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
1136         {
1137             memcpy( dest , source , destlinesize ) ;
1138         }
1139
1140         maskbuf.UngetWriteBuf( maskbufsize ) ;
1141         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
1142     }
1143     else if ( HasAlpha() )
1144         ret.UseAlpha() ;
1145
1146     return ret;
1147 }
1148
1149 bool wxBitmap::Create(int w, int h, int d)
1150 {
1151     UnRef();
1152
1153     if ( d < 0 )
1154         d = wxDisplayDepth() ;
1155
1156     m_refData = new wxBitmapRefData( w , h , d );
1157
1158     return M_BITMAPDATA->IsOk() ;
1159 }
1160
1161
1162 bool wxBitmap::Create(CGImageRef image)
1163 {
1164     UnRef();
1165
1166     m_refData = new wxBitmapRefData( image );
1167
1168     return M_BITMAPDATA->IsOk() ;
1169 }
1170
1171 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
1172 {
1173     UnRef();
1174
1175     wxBitmapHandler *handler = FindHandler(type);
1176
1177     if ( handler )
1178     {
1179         m_refData = new wxBitmapRefData;
1180
1181         return handler->LoadFile(this, filename, type, -1, -1);
1182     }
1183     else
1184     {
1185 #if wxUSE_IMAGE
1186         wxImage loadimage(filename, type);
1187         if (loadimage.Ok())
1188         {
1189             *this = loadimage;
1190
1191             return true;
1192         }
1193 #endif
1194     }
1195
1196     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1197
1198     return false;
1199 }
1200
1201 bool wxBitmap::Create(const void* data, wxBitmapType type, int width, int height, int depth)
1202 {
1203     UnRef();
1204
1205     m_refData = new wxBitmapRefData;
1206
1207     wxBitmapHandler *handler = FindHandler(type);
1208
1209     if ( handler == NULL )
1210     {
1211         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1212
1213         return false;
1214     }
1215
1216     return handler->Create(this, data, type, width, height, depth);
1217 }
1218
1219 #if wxUSE_IMAGE
1220
1221 wxBitmap::wxBitmap(const wxImage& image, int depth)
1222 {
1223     wxCHECK_RET( image.Ok(), wxT("invalid image") );
1224
1225     // width and height of the device-dependent bitmap
1226     int width = image.GetWidth();
1227     int height = image.GetHeight();
1228
1229     wxBitmapRefData* bitmapRefData;
1230
1231     m_refData = bitmapRefData = new wxBitmapRefData( width , height , depth ) ;
1232
1233     if ( bitmapRefData->IsOk())
1234     {
1235         // Create picture
1236
1237         bool hasAlpha = false ;
1238
1239         if ( image.HasMask() )
1240         {
1241             // takes precedence, don't mix with alpha info
1242         }
1243         else
1244         {
1245             hasAlpha = image.HasAlpha() ;
1246         }
1247
1248         if ( hasAlpha )
1249             UseAlpha() ;
1250
1251         unsigned char* destinationstart = (unsigned char*) BeginRawAccess() ;
1252         register unsigned char* data = image.GetData();
1253         if ( destinationstart != NULL && data != NULL )
1254         {
1255             const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
1256             for (int y = 0; y < height; destinationstart += M_BITMAPDATA->GetBytesPerRow(), y++)
1257             {
1258                 unsigned char * destination = destinationstart;
1259                 for (int x = 0; x < width; x++)
1260                 {
1261                     if ( hasAlpha )
1262                     {
1263                         const unsigned char a = *alpha++;
1264                         *destination++ = a ;
1265
1266     #if wxOSX_USE_PREMULTIPLIED_ALPHA
1267                         *destination++ = ((*data++) * a + 127) / 255 ;
1268                         *destination++ = ((*data++) * a + 127) / 255 ;
1269                         *destination++ = ((*data++) * a + 127) / 255 ;
1270     #else
1271                         *destination++ = *data++ ;
1272                         *destination++ = *data++ ;
1273                         *destination++ = *data++ ;
1274     #endif
1275                     }
1276                     else
1277                     {
1278                         *destination++ = 0xFF ;
1279                         *destination++ = *data++ ;
1280                         *destination++ = *data++ ;
1281                         *destination++ = *data++ ;
1282                     }
1283                 }
1284             }
1285
1286             EndRawAccess() ;
1287         }
1288         if ( image.HasMask() )
1289             SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
1290     } /* bitmapRefData->IsOk() */
1291 }
1292
1293 wxImage wxBitmap::ConvertToImage() const
1294 {
1295     wxImage image;
1296
1297     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
1298
1299     // create an wxImage object
1300     int width = GetWidth();
1301     int height = GetHeight();
1302     image.Create( width, height );
1303
1304     unsigned char *data = image.GetData();
1305     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
1306
1307     unsigned char* sourcestart = (unsigned char*) GetRawAccess() ;
1308
1309     bool hasAlpha = false ;
1310     bool hasMask = false ;
1311     int maskBytesPerRow = 0 ;
1312     unsigned char *alpha = NULL ;
1313     unsigned char *mask = NULL ;
1314
1315     if ( HasAlpha() )
1316         hasAlpha = true ;
1317
1318     if ( GetMask() )
1319     {
1320         hasMask = true ;
1321         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1322         maskBytesPerRow = GetMask()->GetBytesPerRow() ;
1323     }
1324
1325     if ( hasAlpha )
1326     {
1327         image.SetAlpha() ;
1328         alpha = image.GetAlpha() ;
1329     }
1330
1331     int index = 0;
1332
1333     // The following masking algorithm is the same as well in msw/gtk:
1334     // the colour used as transparent one in wxImage and the one it is
1335     // replaced with when it actually occurs in the bitmap
1336     static const int MASK_RED = 1;
1337     static const int MASK_GREEN = 2;
1338     static const int MASK_BLUE = 3;
1339     static const int MASK_BLUE_REPLACEMENT = 2;
1340
1341     for (int yy = 0; yy < height; yy++ , sourcestart += M_BITMAPDATA->GetBytesPerRow() , mask += maskBytesPerRow )
1342     {
1343         unsigned char * maskp = mask ;
1344         unsigned char * source = sourcestart;
1345         unsigned char a, r, g, b;
1346         long color;
1347
1348         for (int xx = 0; xx < width; xx++)
1349         {
1350             color = *((long*) source) ;
1351 #ifdef WORDS_BIGENDIAN
1352             a = ((color&0xFF000000) >> 24) ;
1353             r = ((color&0x00FF0000) >> 16) ;
1354             g = ((color&0x0000FF00) >> 8) ;
1355             b = (color&0x000000FF);
1356 #else
1357             b = ((color&0xFF000000) >> 24) ;
1358             g = ((color&0x00FF0000) >> 16) ;
1359             r = ((color&0x0000FF00) >> 8) ;
1360             a = (color&0x000000FF);
1361 #endif
1362             if ( hasMask )
1363             {
1364                 if ( *maskp++ == 0xFF )
1365                 {
1366                     r = MASK_RED ;
1367                     g = MASK_GREEN ;
1368                     b = MASK_BLUE ;
1369                 }
1370                 else if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1371                     b = MASK_BLUE_REPLACEMENT ;
1372             }
1373             else if ( hasAlpha )
1374             {
1375                 *alpha++ = a ;
1376 #if wxOSX_USE_PREMULTIPLIED_ALPHA
1377                 // this must be non-premultiplied data
1378                 if ( a != 0xFF && a!= 0 )
1379                 {
1380                     r = r * 255 / a;
1381                     g = g * 255 / a;
1382                     b = b * 255 / a;
1383                 }
1384 #endif
1385             }
1386
1387             data[index    ] = r ;
1388             data[index + 1] = g ;
1389             data[index + 2] = b ;
1390
1391             index += 3;
1392             source += 4 ;
1393         }
1394     }
1395
1396     if ( hasMask )
1397         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1398
1399     return image;
1400 }
1401
1402 #endif //wxUSE_IMAGE
1403
1404 bool wxBitmap::SaveFile( const wxString& filename,
1405     wxBitmapType type, const wxPalette *palette ) const
1406 {
1407     bool success = false;
1408     wxBitmapHandler *handler = FindHandler(type);
1409
1410     if ( handler )
1411     {
1412         success = handler->SaveFile(this, filename, type, palette);
1413     }
1414     else
1415     {
1416 #if wxUSE_IMAGE
1417         wxImage image = ConvertToImage();
1418         success = image.SaveFile(filename, type);
1419 #else
1420         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1421 #endif
1422     }
1423
1424     return success;
1425 }
1426
1427 int wxBitmap::GetHeight() const
1428 {
1429    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1430
1431    return M_BITMAPDATA->GetHeight();
1432 }
1433
1434 int wxBitmap::GetWidth() const
1435 {
1436    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1437
1438    return M_BITMAPDATA->GetWidth() ;
1439 }
1440
1441 int wxBitmap::GetDepth() const
1442 {
1443    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1444
1445    return M_BITMAPDATA->GetDepth();
1446 }
1447
1448 wxMask *wxBitmap::GetMask() const
1449 {
1450    wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
1451
1452    return M_BITMAPDATA->m_bitmapMask;
1453 }
1454
1455 bool wxBitmap::HasAlpha() const
1456 {
1457    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1458
1459    return M_BITMAPDATA->HasAlpha() ;
1460 }
1461
1462 void wxBitmap::SetWidth(int w)
1463 {
1464     AllocExclusive();
1465     M_BITMAPDATA->SetWidth(w);
1466 }
1467
1468 void wxBitmap::SetHeight(int h)
1469 {
1470     AllocExclusive();
1471     M_BITMAPDATA->SetHeight(h);
1472 }
1473
1474 void wxBitmap::SetDepth(int d)
1475 {
1476     AllocExclusive();
1477     M_BITMAPDATA->SetDepth(d);
1478 }
1479
1480 void wxBitmap::SetOk(bool isOk)
1481 {
1482     AllocExclusive();
1483     M_BITMAPDATA->SetOk(isOk);
1484 }
1485
1486 #if wxUSE_PALETTE
1487 wxPalette *wxBitmap::GetPalette() const
1488 {
1489    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1490
1491    return &M_BITMAPDATA->m_bitmapPalette;
1492 }
1493
1494 void wxBitmap::SetPalette(const wxPalette& palette)
1495 {
1496     AllocExclusive();
1497     M_BITMAPDATA->m_bitmapPalette = palette ;
1498 }
1499 #endif // wxUSE_PALETTE
1500
1501 void wxBitmap::SetMask(wxMask *mask)
1502 {
1503     AllocExclusive();
1504     // Remove existing mask if there is one.
1505     delete M_BITMAPDATA->m_bitmapMask;
1506
1507     M_BITMAPDATA->m_bitmapMask = mask ;
1508 }
1509
1510 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1511 {
1512     wxUnusedVar(mask);
1513
1514     return WXHBITMAP(M_BITMAPDATA->GetBitmapContext());
1515 }
1516
1517 // ----------------------------------------------------------------------------
1518 // wxMask
1519 // ----------------------------------------------------------------------------
1520
1521 wxMask::wxMask()
1522 {
1523     Init() ;
1524 }
1525
1526 wxMask::wxMask(const wxMask &tocopy)
1527 {
1528     Init();
1529
1530     m_bytesPerRow = tocopy.m_bytesPerRow;
1531     m_width = tocopy.m_width;
1532     m_height = tocopy.m_height;
1533
1534     size_t size = m_bytesPerRow * m_height;
1535     unsigned char* dest = (unsigned char*)m_memBuf.GetWriteBuf( size );
1536     unsigned char* source = (unsigned char*)tocopy.m_memBuf.GetData();
1537     memcpy( dest, source, size );
1538     m_memBuf.UngetWriteBuf( size ) ;
1539     RealizeNative() ;
1540 }
1541
1542 // Construct a mask from a bitmap and a colour indicating
1543 // the transparent area
1544 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
1545 {
1546     Init() ;
1547     Create( bitmap, colour );
1548 }
1549
1550 // Construct a mask from a mono bitmap (copies the bitmap).
1551 wxMask::wxMask( const wxBitmap& bitmap )
1552 {
1553     Init() ;
1554     Create( bitmap );
1555 }
1556
1557 // Construct a mask from a mono bitmap (copies the bitmap).
1558
1559 wxMask::wxMask( const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1560 {
1561     Init() ;
1562     Create( data, width , height , bytesPerRow );
1563 }
1564
1565 wxMask::~wxMask()
1566 {
1567     if ( m_maskBitmap )
1568     {
1569         CGContextRelease( (CGContextRef) m_maskBitmap );
1570         m_maskBitmap = NULL ;
1571     }
1572 }
1573
1574 void wxMask::Init()
1575 {
1576     m_width = m_height = m_bytesPerRow = 0 ;
1577     m_maskBitmap = NULL ;
1578 }
1579
1580 void *wxMask::GetRawAccess() const
1581 {
1582     return m_memBuf.GetData() ;
1583 }
1584
1585 // The default ColorTable for k8IndexedGrayPixelFormat in Intel appears to be broken, so we'll use an non-indexed
1586 // bitmap mask instead; in order to keep the code simple, the change applies to PowerPC implementations as well
1587
1588 void wxMask::RealizeNative()
1589 {
1590     if ( m_maskBitmap )
1591     {
1592         CGContextRelease( (CGContextRef) m_maskBitmap );
1593        m_maskBitmap = NULL ;
1594     }
1595
1596     CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceGray();
1597     // from MouseTracking sample :
1598     // Ironically, due to a bug in CGImageCreateWithMask, you cannot use
1599     // CGColorSpaceCreateWithName(kCGColorSpaceGenericGray) at this point!
1600
1601     m_maskBitmap = CGBitmapContextCreate((char*) m_memBuf.GetData(), m_width, m_height, 8, m_bytesPerRow, colorspace,
1602         kCGImageAlphaNone );
1603     CGColorSpaceRelease( colorspace );
1604     wxASSERT_MSG( m_maskBitmap , wxT("Unable to create CGBitmapContext context") ) ;
1605 }
1606
1607 // Create a mask from a mono bitmap (copies the bitmap).
1608
1609 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1610 {
1611     m_memBuf = data ;
1612     m_width = width ;
1613     m_height = height ;
1614     m_bytesPerRow = bytesPerRow ;
1615
1616     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1617
1618     RealizeNative() ;
1619
1620     return true ;
1621 }
1622
1623 // Create a mask from a mono bitmap (copies the bitmap).
1624 bool wxMask::Create(const wxBitmap& bitmap)
1625 {
1626     m_width = bitmap.GetWidth() ;
1627     m_height = bitmap.GetHeight() ;
1628     m_bytesPerRow = GetBestBytesPerRow( m_width * kMaskBytesPerPixel ) ;
1629
1630     size_t size = m_bytesPerRow * m_height ;
1631     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1632     wxASSERT( destdatabase != NULL ) ;
1633
1634     memset( destdatabase , 0 , size ) ;
1635     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1636
1637     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1638     {
1639         unsigned char *destdata = destdatabase ;
1640         unsigned char r, g, b;
1641
1642         for ( int x = 0 ; x < m_width ; ++x )
1643         {
1644             srcdata++ ;
1645             r = *srcdata++ ;
1646             g = *srcdata++ ;
1647             b = *srcdata++ ;
1648
1649             if ( ( r + g + b ) > 0x10 )
1650                 *destdata++ = 0xFF ;
1651             else
1652                 *destdata++ = 0x00 ;
1653         }
1654     }
1655
1656     m_memBuf.UngetWriteBuf( size ) ;
1657     RealizeNative() ;
1658
1659     return true;
1660 }
1661
1662 // Create a mask from a bitmap and a colour indicating
1663 // the transparent area
1664 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1665 {
1666     m_width = bitmap.GetWidth() ;
1667     m_height = bitmap.GetHeight() ;
1668     m_bytesPerRow = GetBestBytesPerRow( m_width * kMaskBytesPerPixel ) ;
1669
1670     size_t size = m_bytesPerRow * m_height ;
1671     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1672     wxASSERT( destdatabase != NULL ) ;
1673
1674     memset( destdatabase , 0 , size ) ;
1675     unsigned char * srcdatabase = (unsigned char*) bitmap.GetRawAccess() ;
1676     size_t sourceBytesRow = bitmap.GetBitmapData()->GetBytesPerRow();
1677
1678     for ( int y = 0 ; y < m_height ; ++y , srcdatabase+= sourceBytesRow, destdatabase += m_bytesPerRow)
1679     {
1680         unsigned char *srcdata = srcdatabase ;
1681         unsigned char *destdata = destdatabase ;
1682         unsigned char r, g, b;
1683
1684         for ( int x = 0 ; x < m_width ; ++x )
1685         {
1686             srcdata++ ;
1687             r = *srcdata++ ;
1688             g = *srcdata++ ;
1689             b = *srcdata++ ;
1690
1691             if ( colour == wxColour( r , g , b ) )
1692                 *destdata++ = 0xFF ;
1693             else
1694                 *destdata++ = 0x00 ;
1695         }
1696     }
1697
1698     m_memBuf.UngetWriteBuf( size ) ;
1699     RealizeNative() ;
1700
1701     return true;
1702 }
1703
1704 WXHBITMAP wxMask::GetHBITMAP() const
1705 {
1706     return m_maskBitmap ;
1707 }
1708
1709 // ----------------------------------------------------------------------------
1710 // Standard Handlers
1711 // ----------------------------------------------------------------------------
1712
1713 class WXDLLEXPORT wxBundleResourceHandler: public wxBitmapHandler
1714 {
1715     DECLARE_ABSTRACT_CLASS(wxPNGResourceHandler)
1716
1717 public:
1718     inline wxBundleResourceHandler()
1719     {
1720     };
1721
1722     virtual bool LoadFile(wxBitmap *bitmap,
1723                           const wxString& name,
1724                           wxBitmapType type,
1725                           int desiredWidth,
1726                           int desiredHeight);
1727 };
1728
1729 IMPLEMENT_ABSTRACT_CLASS(wxBundleResourceHandler, wxBitmapHandler);
1730
1731 class WXDLLEXPORT wxPNGResourceHandler: public wxBundleResourceHandler
1732 {
1733     DECLARE_DYNAMIC_CLASS(wxPNGResourceHandler)
1734
1735 public:
1736     inline wxPNGResourceHandler()
1737     {
1738         SetName(wxT("PNG resource"));
1739         SetExtension("PNG");
1740         SetType(wxBITMAP_TYPE_PNG_RESOURCE);
1741     };
1742 };
1743
1744 IMPLEMENT_DYNAMIC_CLASS(wxPNGResourceHandler, wxBundleResourceHandler)
1745
1746 class WXDLLEXPORT wxJPEGResourceHandler: public wxBundleResourceHandler
1747 {
1748     DECLARE_DYNAMIC_CLASS(wxPNGResourceHandler)
1749
1750 public:
1751     inline wxJPEGResourceHandler()
1752     {
1753         SetName(wxT("JPEG resource"));
1754         SetExtension("JPEG");
1755         SetType(wxBITMAP_TYPE_JPEG_RESOURCE);
1756     };
1757 };
1758
1759 IMPLEMENT_DYNAMIC_CLASS(wxJPEGResourceHandler, wxBundleResourceHandler)
1760
1761 bool wxBundleResourceHandler::LoadFile(wxBitmap *bitmap,
1762                                      const wxString& name,
1763                                      wxBitmapType WXUNUSED(type),
1764                                      int WXUNUSED(desiredWidth),
1765                                      int WXUNUSED(desiredHeight))
1766 {
1767     wxString ext = GetExtension().Lower();
1768     wxCFStringRef resname(name);
1769     wxCFStringRef restype(ext);
1770
1771     wxCFRef<CFURLRef> imageURL(CFBundleCopyResourceURL(CFBundleGetMainBundle(), resname, restype, NULL));
1772
1773     if ( imageURL.get() != NULL )
1774     {
1775         // Create the data provider object
1776         wxCFRef<CGDataProviderRef> provider(CGDataProviderCreateWithURL (imageURL) );
1777         CGImageRef image = NULL;
1778
1779         if ( ext == "jpeg" )
1780             image = CGImageCreateWithJPEGDataProvider (provider, NULL, true,
1781                                                    kCGRenderingIntentDefault);
1782         else if ( ext == "png" )
1783             image = CGImageCreateWithPNGDataProvider (provider, NULL, true,
1784                                                        kCGRenderingIntentDefault);
1785         if ( image != NULL )
1786         {
1787             bitmap->Create(image);
1788             CGImageRelease(image);
1789         }
1790     }
1791
1792     return false ;
1793 }
1794
1795 #if !defined( __LP64__ ) && !defined(__WXOSX_IPHONE__)
1796
1797 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1798 {
1799     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1800
1801 public:
1802     inline wxPICTResourceHandler()
1803     {
1804         SetName(wxT("Macintosh Pict resource"));
1805         SetExtension(wxEmptyString);
1806         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1807     };
1808
1809     virtual bool LoadFile(wxBitmap *bitmap,
1810                           const wxString& name,
1811                           wxBitmapType type,
1812                           int desiredWidth,
1813                           int desiredHeight);
1814 };
1815
1816 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1817
1818
1819 bool wxPICTResourceHandler::LoadFile(wxBitmap *bitmap,
1820                                      const wxString& name,
1821                                      wxBitmapType WXUNUSED(type),
1822                                      int WXUNUSED(desiredWidth),
1823                                      int WXUNUSED(desiredHeight))
1824 {
1825 #if wxUSE_METAFILE
1826     Str255 theName ;
1827     wxMacStringToPascal( name , theName ) ;
1828
1829     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1830     if ( thePict )
1831     {
1832         wxMetafile mf ;
1833
1834         mf.SetPICT( thePict ) ;
1835         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1836         wxMemoryDC dc ;
1837         dc.SelectObject( *bitmap ) ;
1838         mf.Play( &dc ) ;
1839         dc.SelectObject( wxNullBitmap ) ;
1840
1841         return true ;
1842     }
1843 #endif
1844
1845     return false ;
1846 }
1847 #endif
1848
1849 void wxBitmap::InitStandardHandlers()
1850 {
1851 #if !defined( __LP64__ ) && !defined(__WXOSX_IPHONE__)
1852     AddHandler( new wxPICTResourceHandler ) ;
1853 #endif
1854 #if wxOSX_USE_COCOA_OR_CARBON
1855     AddHandler( new wxICONResourceHandler ) ;
1856 #endif
1857     AddHandler( new wxPNGResourceHandler );
1858     AddHandler( new wxJPEGResourceHandler );
1859 }
1860
1861 // ----------------------------------------------------------------------------
1862 // raw bitmap access support
1863 // ----------------------------------------------------------------------------
1864
1865 void *wxBitmap::GetRawData(wxPixelDataBase& data, int WXUNUSED(bpp))
1866 {
1867     if ( !Ok() )
1868         // no bitmap, no data (raw or otherwise)
1869         return NULL;
1870
1871     data.m_width = GetWidth() ;
1872     data.m_height = GetHeight() ;
1873     data.m_stride = GetBitmapData()->GetBytesPerRow() ;
1874
1875     return BeginRawAccess() ;
1876 }
1877
1878 void wxBitmap::UngetRawData(wxPixelDataBase& WXUNUSED(dataBase))
1879 {
1880     EndRawAccess() ;
1881 }
1882
1883 void wxBitmap::UseAlpha()
1884 {
1885     // remember that we are using alpha channel:
1886     // we'll need to create a proper mask in UngetRawData()
1887     M_BITMAPDATA->UseAlpha( true );
1888 }