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