src/mac/carbon/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        bitmap.cpp
   3 // Purpose:     wxBitmap
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "bitmap.h"
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17
  18 #include "wx/bitmap.h"
  19 #include "wx/icon.h"
  20 #include "wx/log.h"
  21 #include "wx/image.h"
  22 #include "wx/metafile.h"
  23 #include "wx/xpmdecod.h"
  24
  25 #include "wx/rawbmp.h"
  26
  27 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
  28 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
  29 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject )
  30
  31 #ifdef __DARWIN__
  32     #include <ApplicationServices/ApplicationServices.h>
  33 #else
  34     #include <PictUtils.h>
  35 #endif
  36
  37 #include "wx/mac/uma.h"
  38
  39 #include "wx/dcmemory.h"
  40
  41 // Implementation Notes
  42 // --------------------
  43 //
  44 // we are always working with a 32 bit deep pixel buffer
  45 // under QuickDraw its alpha parts are going to be ignored in the GWorld,
  46 // therefore we have a separate GWorld there for blitting the mask in
  47
  48 // under Quartz then content is transformed into a CGImageRef representing the same data
  49 // which can be transferred to the GPU by the OS for fast rendering
  50
  51 // we don't dare premultiplied alpha yet
  52 #define wxMAC_USE_PREMULTIPLIED_ALPHA 0
  53
  54 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
  55 {
  56     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
  57     if ( bitmap.Ok() )
  58     {
  59         wxBitmapRefData * bmap = (wxBitmapRefData*) ( bitmap.GetRefData()) ;
  60         if ( bmap == NULL )
  61             return ;
  62
  63         if ( bmap->HasNativeSize() )
  64         {
  65             info->contentType = kControlContentIconRef ;
  66             info->u.iconRef = bmap->GetIconRef() ;
  67         }
  68         else
  69         {
  70             info->contentType = kControlContentPictHandle ;
  71             info->u.picture = bmap->GetPictHandle() ;
  72         }
  73 #if wxMAC_USE_CORE_GRAPHICS
  74         /*
  75             // only on 10.4 more controls will accept a CGImage
  76
  77             info->contentType = kControlContentCGImageRef ;
  78             info->u.imageRef = (CGImageRef) bmap->CGImageCreate() ;
  79         */
  80 #endif
  81     }
  82 }
  83
  84 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
  85 {
  86     if ( info->contentType == kControlContentIconRef )
  87     {
  88         // as the bitmap is now the owner, no need to release here
  89     }
  90     else if ( info->contentType == kControlContentPictHandle )
  91     {
  92         // owned by the bitma, no release here
  93     }
  94 #if wxMAC_USE_CORE_GRAPHICS && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
  95     else if ( info->contentType == kControlContentCGImageRef )
  96     {
  97         CGImageRelease( info->u.imageRef ) ;
  98     }
  99 #endif
 100     else
 101     {
 102         wxFAIL_MSG(wxT("Unexpected bitmap type") ) ;
 103     }
 104 }
 105
 106 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
 107
 108 void wxBitmapRefData::Init()
 109 {
 110     m_width = 0 ;
 111     m_height = 0 ;
 112     m_depth = 0 ;
 113     m_ok = false ;
 114     m_bitmapMask = NULL ;
 115 #if wxMAC_USE_CORE_GRAPHICS
 116     m_cgImageRef = NULL ;
 117 #endif
 118     m_iconRef = NULL ;
 119     m_pictHandle = NULL ;
 120     m_hBitmap = NULL ;
 121     m_hMaskBitmap = NULL;
 122     m_maskBytesPerRow = NULL ;
 123
 124     m_rawAccessCount = 0 ;
 125     m_hasAlpha = false;
 126 }
 127
 128 wxBitmapRefData::wxBitmapRefData()
 129 {
 130     Init() ;
 131 }
 132
 133 wxBitmapRefData::wxBitmapRefData( int w , int h , int d )
 134 {
 135     Init() ;
 136     Create( w , h , d ) ;
 137 }
 138
 139 bool wxBitmapRefData::Create( int w , int h , int d )
 140 {
 141     m_width = w ;
 142     m_height = h ;
 143     m_depth = d ;
 144
 145     m_bytesPerRow = w * 4 ;
 146     size_t size = m_bytesPerRow * h ;
 147     void*  data = m_memBuf.GetWriteBuf(size) ;
 148     memset( data ,  0 , size) ;
 149     m_memBuf.UngetWriteBuf(size) ;
 150
 151     m_hBitmap = NULL ;
 152     Rect rect = { 0 , 0 , m_height , m_width } ;
 153     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 154         (char*) data , m_bytesPerRow ) ) ;
 155     wxASSERT_MSG( m_hBitmap , wxT("Unable to create GWorld context") ) ;
 156     m_ok = ( m_hBitmap != NULL ) ;
 157
 158     return m_ok ;
 159 }
 160
 161 void wxBitmapRefData::UseAlpha( bool use )
 162 {
 163     if ( m_hasAlpha == use )
 164         return ;
 165
 166     m_hasAlpha = use ;
 167     if ( m_hasAlpha )
 168     {
 169         int width = GetWidth() ;
 170         int height = GetHeight() ;
 171         m_maskBytesPerRow = ( width * 4 + 3 ) & 0xFFFFFFC ;
 172         size_t size = height * m_maskBytesPerRow ;
 173         unsigned char * data = (unsigned char * ) m_maskMemBuf.GetWriteBuf( size ) ;
 174         memset( data , 0 , size ) ;
 175         wxASSERT( m_hMaskBitmap == NULL ) ;
 176         Rect rect = { 0 , 0 , height , width } ;
 177         verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hMaskBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 178             (char*) data , m_maskBytesPerRow ) ) ;
 179         wxASSERT_MSG( m_hMaskBitmap , wxT("Unable to create GWorld context for alpha mask") ) ;
 180         m_maskMemBuf.UngetWriteBuf(size) ;
 181 #if !wxMAC_USE_CORE_GRAPHICS
 182         UpdateAlphaMask() ;
 183 #endif
 184     }
 185     else
 186     {
 187         DisposeGWorld( m_hMaskBitmap ) ;
 188         m_hMaskBitmap = NULL ;
 189         m_maskBytesPerRow = 0 ;
 190     }
 191 }
 192
 193 void *wxBitmapRefData::GetRawAccess() const
 194 {
 195     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 196     return m_memBuf.GetData() ;
 197 }
 198
 199 void *wxBitmapRefData::BeginRawAccess()
 200 {
 201     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") ) ;
 202     wxASSERT( m_rawAccessCount == 0 ) ;
 203     ++m_rawAccessCount ;
 204     // we must destroy an existing cached image, as
 205     // the bitmap data may change now
 206     wxASSERT_MSG( m_pictHandle == NULL && m_iconRef == NULL ,
 207         wxT("Currently, modifing bitmaps that are used in controls already is not supported") ) ;
 208 #if wxMAC_USE_CORE_GRAPHICS
 209     if ( m_cgImageRef )
 210     {
 211         CGImageRelease( m_cgImageRef ) ;
 212         m_cgImageRef = NULL ;
 213     }
 214 #endif
 215     return m_memBuf.GetData() ;
 216 }
 217
 218 void wxBitmapRefData::EndRawAccess()
 219 {
 220     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 221     wxASSERT( m_rawAccessCount == 1 ) ;
 222     --m_rawAccessCount ;
 223 #if !wxMAC_USE_CORE_GRAPHICS
 224     UpdateAlphaMask() ;
 225 #endif
 226 }
 227
 228 bool wxBitmapRefData::HasNativeSize()
 229 {
 230     int w = GetWidth() ;
 231     int h = GetHeight() ;
 232     int sz = wxMax( w , h ) ;
 233
 234     if ( sz == 128 || sz == 48 || sz == 32 || sz == 16 )
 235         return true ;
 236     return false ;
 237 }
 238
 239 IconRef wxBitmapRefData::GetIconRef()
 240 {
 241     if ( m_iconRef == NULL )
 242     {
 243         // Create Icon Family Handle
 244
 245         IconFamilyHandle iconFamily = NULL ;
 246
 247         iconFamily = (IconFamilyHandle) NewHandle(8) ;
 248         (**iconFamily).resourceType = kIconFamilyType ;
 249         (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
 250
 251         int w = GetWidth() ;
 252         int h = GetHeight() ;
 253         int sz = wxMax( w , h ) ;
 254
 255         OSType dataType = 0 ;
 256         OSType maskType = 0 ;
 257
 258         if ( sz == 128 )
 259         {
 260             dataType = kThumbnail32BitData ;
 261             maskType = kThumbnail8BitMask ;
 262         }
 263         else if ( sz == 48 )
 264         {
 265             dataType = kHuge32BitData ;
 266             maskType = kHuge8BitMask ;
 267         }
 268         else if ( sz == 32 )
 269         {
 270             dataType = kLarge32BitData ;
 271             maskType = kLarge8BitMask ;
 272         }
 273         else if ( sz == 16 )
 274         {
 275             dataType = kSmall32BitData ;
 276             maskType = kSmall8BitMask ;
 277         }
 278
 279         if ( dataType != 0 )
 280         {
 281             // setup the header properly
 282
 283             Handle data = NULL ;
 284             Handle maskdata = NULL ;
 285             unsigned char * maskptr = NULL ;
 286             unsigned char * ptr = NULL ;
 287             size_t size ;
 288             size_t masksize ;
 289
 290             size = sz * sz * 4 ;
 291             data = NewHandle( size) ;
 292             HLock( data ) ;
 293             ptr = (unsigned char*) *data ;
 294             memset( ptr , 0, size ) ;
 295
 296             masksize = sz * sz ;
 297             maskdata = NewHandle( masksize ) ;
 298             HLock( maskdata ) ;
 299             maskptr = (unsigned char*) *maskdata ;
 300             memset( maskptr , 0 , masksize ) ;
 301
 302             bool hasAlpha = HasAlpha() ;
 303             wxMask *mask = m_bitmapMask ;
 304             unsigned char * source = (unsigned char*) GetRawAccess() ;
 305             unsigned char * masksource = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 306             for ( int y = 0 ; y < h ; ++y )
 307             {
 308                 unsigned char * dest = ptr + y * sz * 4 ;
 309                 unsigned char * maskdest = maskptr + y * sz ;
 310                 for ( int x = 0 ; x < w ; ++x )
 311                 {
 312                     unsigned char a = *source ++ ;
 313                     unsigned char r = *source ++ ;
 314                     unsigned char g = *source ++ ;
 315                     unsigned char b = *source ++ ;
 316
 317                     *dest++ = 0 ;
 318                     *dest++ = r ;
 319                     *dest++ = g ;
 320                     *dest++ = b ;
 321
 322                     if ( mask )
 323                         *maskdest++ = *masksource++ ;
 324                     else if ( hasAlpha )
 325                         *maskdest++ = a ;
 326                     else
 327                         *maskdest++ = 0xFF ;
 328                 }
 329             }
 330
 331             OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 332             wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 333
 334             err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 335             wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 336             HUnlock( data ) ;
 337             HUnlock( maskdata ) ;
 338             DisposeHandle( data ) ;
 339             DisposeHandle( maskdata ) ;
 340         }
 341         else
 342         {
 343             iconFamily = (IconFamilyHandle) NewHandle(8) ;
 344             (**iconFamily).resourceType = kIconFamilyType ;
 345             (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
 346             PicHandle pic = GetPictHandle() ;
 347             SetIconFamilyData( iconFamily, 'PICT' , (Handle) pic ) ;
 348         }
 349
 350         // transform into IconRef
 351
 352         static int iconCounter = 2 ;
 353         OSStatus err = RegisterIconRefFromIconFamily( 'WXNG' , (OSType) iconCounter, iconFamily, &m_iconRef ) ;
 354         wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 355         // we have to retain a reference, as Unregister will decrement it
 356         AcquireIconRef( m_iconRef ) ;
 357         UnregisterIconRef( 'WXNG' , (OSType) iconCounter ) ;
 358         DisposeHandle( (Handle) iconFamily ) ;
 359         ++iconCounter ;
 360     }
 361     return m_iconRef ;
 362 }
 363
 364 PicHandle wxBitmapRefData::GetPictHandle()
 365 {
 366     if ( m_pictHandle == NULL )
 367     {
 368         CGrafPtr        origPort = NULL ;
 369         GDHandle        origDev = NULL ;
 370         PicHandle       pict = NULL ;
 371         GWorldPtr       wp = NULL ;
 372         GWorldPtr       mask = NULL ;
 373         int height = GetHeight() ;
 374         int width = GetWidth() ;
 375
 376         Rect rect = { 0 , 0 , height , width } ;
 377
 378         GetGWorld( &origPort , &origDev ) ;
 379
 380         wp = GetHBITMAP( &mask ) ;
 381
 382         RgnHandle clipRgn = NULL ;
 383
 384         if ( mask )
 385         {
 386             GWorldPtr monoworld ;
 387             clipRgn = NewRgn() ;
 388             OSStatus err = NewGWorld( &monoworld , 1 , &rect , NULL , NULL , 0 ) ;
 389             verify_noerr(err) ;
 390             LockPixels( GetGWorldPixMap( monoworld ) ) ;
 391             LockPixels( GetGWorldPixMap( mask ) ) ;
 392             SetGWorld( monoworld , NULL ) ;
 393             RGBColor       white = { 0xffff ,0xffff , 0xffff } ;
 394             RGBColor       black = { 0x0000 ,0x0000 , 0x0000 } ;
 395             RGBForeColor( &black ) ;
 396             RGBBackColor( &white ) ;
 397             CopyBits(GetPortBitMapForCopyBits(mask),
 398                     GetPortBitMapForCopyBits(monoworld),
 399                     &rect,
 400                     &rect,
 401                     srcCopy,NULL);
 402             BitMapToRegion( clipRgn , (BitMap*) *GetGWorldPixMap( monoworld ) ) ;
 403             UnlockPixels( GetGWorldPixMap( monoworld ) ) ;
 404             UnlockPixels( GetGWorldPixMap( mask ) ) ;
 405             DisposeGWorld( monoworld ) ;
 406         }
 407
 408         SetGWorld( wp , NULL ) ;
 409         Rect portRect ;
 410         GetPortBounds( wp , &portRect ) ;
 411         m_pictHandle = OpenPicture(&portRect);
 412
 413         if(m_pictHandle)
 414         {
 415             RGBColor       white = { 0xffff ,0xffff , 0xffff } ;
 416             RGBColor       black = { 0x0000 ,0x0000 , 0x0000 } ;
 417             RGBForeColor( &black ) ;
 418             RGBBackColor( &white ) ;
 419
 420             if ( clipRgn )
 421                 SetClip( clipRgn ) ;
 422
 423             LockPixels( GetGWorldPixMap( wp ) ) ;
 424             CopyBits(GetPortBitMapForCopyBits(wp),
 425                     GetPortBitMapForCopyBits(wp),
 426                     &portRect,
 427                     &portRect,
 428                     srcCopy,clipRgn);
 429             UnlockPixels( GetGWorldPixMap( wp ) ) ;
 430             ClosePicture();
 431         }
 432         SetGWorld( origPort , origDev ) ;
 433         if ( clipRgn )
 434             DisposeRgn( clipRgn ) ;
 435     }
 436     return m_pictHandle ;
 437 }
 438
 439 #if wxMAC_USE_CORE_GRAPHICS
 440 void wxMacMemoryBufferReleaseProc(void *info, const void *data, size_t size)
 441 {
 442     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
 443     wxASSERT( data == membuf->GetData() ) ;
 444     delete membuf ;
 445 }
 446
 447 CGImageRef wxBitmapRefData::CGImageCreate() const
 448 {
 449     wxASSERT( m_ok ) ;
 450     wxASSERT( m_rawAccessCount >= 0 ) ;
 451     CGImageRef image ;
 452     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 453     {
 454         size_t imageSize = m_width * m_height * 4 ;
 455         void * dataBuffer = m_memBuf.GetData() ;
 456         int w = m_width ;
 457         int h = m_height ;
 458         CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 459         wxMemoryBuffer* membuf = NULL ;
 460
 461         if ( m_bitmapMask )
 462         {
 463             membuf = new wxMemoryBuffer( imageSize ) ;
 464             memcpy( membuf->GetData() , dataBuffer , imageSize ) ;
 465             unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 466             int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 467             unsigned char *destalpha = (unsigned char *) membuf->GetData() ;
 468             alphaInfo = kCGImageAlphaFirst ;
 469             for ( int y = 0 ; y < h ; ++y , sourcemaskstart += maskrowbytes)
 470             {
 471                 unsigned char *sourcemask = sourcemaskstart ;
 472                 for( int x = 0 ; x < w ; ++x , sourcemask++ , destalpha += 4 )
 473                 {
 474                     *destalpha = *sourcemask ;
 475                 }
 476             }
 477         }
 478         else if ( m_hasAlpha )
 479         {
 480 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 481             alphaInfo = kCGImageAlphaPremultipliedFirst ;
 482 #else
 483             alphaInfo = kCGImageAlphaFirst ;
 484 #endif
 485             membuf = new wxMemoryBuffer( m_memBuf ) ;
 486         }
 487         else
 488         {
 489             membuf = new wxMemoryBuffer( m_memBuf ) ;
 490         }
 491         CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 492         CGDataProviderRef dataProvider =
 493             CGDataProviderCreateWithData( membuf , (const void *)membuf->GetData() , imageSize,
 494                 wxMacMemoryBufferReleaseProc );
 495         image =
 496             ::CGImageCreate( w, h, 8 , 32 , 4 * m_width , colorSpace, alphaInfo ,
 497                         dataProvider, NULL , false , kCGRenderingIntentDefault );
 498         CGDataProviderRelease( dataProvider);
 499     }
 500     else
 501     {
 502         image = m_cgImageRef ;
 503         CGImageRetain( image ) ;
 504     }
 505     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 506     {
 507         // we keep it for later use
 508         m_cgImageRef = image ;
 509         CGImageRetain( image ) ;
 510     }
 511     return image ;
 512 }
 513 #endif
 514
 515 GWorldPtr wxBitmapRefData::GetHBITMAP(GWorldPtr* mask) const
 516 {
 517     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 518     if ( mask )
 519     {
 520         *mask = NULL ;
 521         if ( m_bitmapMask )
 522             *mask = (GWorldPtr) m_bitmapMask->GetHBITMAP() ;
 523         else if ( m_hasAlpha )
 524         {
 525 #if !wxMAC_USE_CORE_GRAPHICS
 526             if ( m_rawAccessCount > 0 )
 527                 UpdateAlphaMask() ;
 528 #else
 529             // this structure is not kept in synch when using CG, so if someone
 530             // is really accessing the Graphports, we have to sync it
 531             UpdateAlphaMask() ;
 532 #endif
 533             *mask = m_hMaskBitmap ;
 534         }
 535     }
 536     return m_hBitmap ;
 537 }
 538
 539 void wxBitmapRefData::UpdateAlphaMask() const
 540 {
 541     if ( m_hasAlpha )
 542     {
 543         unsigned char *sourcemask = (unsigned char *) GetRawAccess() ;
 544         unsigned char *destalphabase = (unsigned char *) m_maskMemBuf.GetData() ;
 545
 546         int h = GetHeight() ;
 547         int w = GetWidth() ;
 548
 549         for ( int y = 0 ; y < h ; ++y , destalphabase += m_maskBytesPerRow )
 550         {
 551             unsigned char* destalpha = destalphabase ;
 552             for( int x = 0 ; x < w ; ++x , sourcemask += 4 )
 553             {
 554                 // we must have 24 bit depth for non quartz smooth alpha
 555                 *destalpha++ = 255 ;
 556                 *destalpha++ = 255  - *sourcemask ;
 557                 *destalpha++ = 255  - *sourcemask ;
 558                 *destalpha++ = 255  - *sourcemask ;
 559             }
 560         }
 561     }
 562 }
 563
 564 void wxBitmapRefData::Free()
 565 {
 566     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 567
 568 #if wxMAC_USE_CORE_GRAPHICS
 569     if ( m_cgImageRef )
 570     {
 571         CGImageRelease( m_cgImageRef ) ;
 572         m_cgImageRef = NULL ;
 573     }
 574 #endif
 575     if ( m_iconRef )
 576     {
 577         ReleaseIconRef( m_iconRef ) ;
 578         m_iconRef = NULL ;
 579     }
 580     if ( m_pictHandle )
 581     {
 582         KillPicture( m_pictHandle ) ;
 583         m_pictHandle = NULL ;
 584     }
 585     if ( m_hBitmap )
 586     {
 587         DisposeGWorld( MAC_WXHBITMAP(m_hBitmap) ) ;
 588         m_hBitmap = NULL ;
 589     }
 590     if ( m_hMaskBitmap )
 591     {
 592         DisposeGWorld( MAC_WXHBITMAP(m_hMaskBitmap) ) ;
 593         m_hMaskBitmap = NULL ;
 594     }
 595
 596     if (m_bitmapMask)
 597     {
 598         delete m_bitmapMask;
 599         m_bitmapMask = NULL;
 600     }
 601 }
 602
 603 wxBitmapRefData::~wxBitmapRefData()
 604 {
 605     Free() ;
 606 }
 607
 608 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 609 {
 610     int w = icon.GetWidth() ;
 611     int h = icon.GetHeight() ;
 612
 613
 614     Create( icon.GetWidth() , icon.GetHeight() ) ;
 615
 616     bool created = false ;
 617
 618     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 619     {
 620         IconFamilyHandle iconFamily = NULL ;
 621         Handle imagehandle = NewHandle(0) ;
 622         Handle maskhandle = NewHandle(0) ;
 623
 624         OSType maskType = 0;
 625         OSType dataType = 0;
 626         IconSelectorValue selector = 0 ;
 627         if ( w == 128 )
 628         {
 629             dataType = kThumbnail32BitData ;
 630             maskType = kThumbnail8BitMask ;
 631             selector = kSelectorAllAvailableData ;
 632         }
 633         else if ( w == 48 )
 634         {
 635             dataType = kHuge32BitData ;
 636             maskType = kHuge8BitMask ;
 637             selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 638         }
 639         else if ( w == 32 )
 640         {
 641             dataType = kLarge32BitData ;
 642             maskType = kLarge8BitMask ;
 643             selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 644         }
 645         else if ( w == 16 )
 646         {
 647             dataType = kSmall32BitData ;
 648             maskType = kSmall8BitMask ;
 649             selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 650         }
 651
 652
 653         OSStatus err = ( IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ) ;
 654
 655         err =( GetIconFamilyData( iconFamily , dataType , imagehandle ) ) ;
 656         err =( GetIconFamilyData( iconFamily , maskType , maskhandle ) ) ;
 657         size_t imagehandlesize = GetHandleSize( imagehandle ) ;
 658         size_t maskhandlesize = GetHandleSize( maskhandle ) ;
 659
 660         if ( imagehandlesize != 0 && maskhandlesize != 0 )
 661         {
 662             wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 663             wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 664             UseAlpha() ;
 665             unsigned char *source = (unsigned char *) *imagehandle ;
 666             unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 667
 668             unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 669             for ( int y = 0 ; y < h ; ++y )
 670             {
 671                 for ( int x = 0 ; x < w ; ++x )
 672                 {
 673                     *destination++ = *sourcemask++ ;
 674                     source++ ;
 675                     *destination++ = *source++ ;
 676                     *destination++ = *source++ ;
 677                     *destination++ = *source++ ;
 678                 }
 679             }
 680             EndRawAccess() ;
 681             DisposeHandle( imagehandle ) ;
 682             DisposeHandle( maskhandle ) ;
 683         }
 684         DisposeHandle( (Handle) iconFamily ) ;
 685
 686     }
 687
 688     if ( !created )
 689     {
 690         wxMemoryDC dc ;
 691         dc.SelectObject( *this ) ;
 692         dc.DrawIcon( icon , 0 , 0 ) ;
 693         dc.SelectObject( wxNullBitmap ) ;
 694     }
 695     return true;
 696 }
 697
 698 wxBitmap::wxBitmap()
 699 {
 700 }
 701
 702 wxBitmap::~wxBitmap()
 703 {
 704 }
 705
 706 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 707 {
 708     m_refData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 709
 710     if ( no_bits == 1 )
 711     {
 712         int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 713         if ( the_width % (sizeof(unsigned char) * 8) ) {
 714             linesize += sizeof(unsigned char);
 715         }
 716         unsigned char* linestart = (unsigned char*) bits ;
 717         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 718         for ( int y = 0 ; y < the_height ; ++y , linestart += linesize )
 719         {
 720             for ( int x = 0 ; x < the_width ; ++x )
 721             {
 722                 int index = x / 8 ;
 723                 int bit = x % 8 ;
 724                 int mask = 1 << bit ;
 725                 if ( linestart[index] & mask )
 726                 {
 727                     *destination++ = 0xFF ;
 728                     *destination++ = 0 ;
 729                     *destination++ = 0 ;
 730                     *destination++ = 0 ;
 731                 }
 732                 else
 733                 {
 734                     *destination++ = 0xFF ;
 735                     *destination++ = 0xFF ;
 736                     *destination++ = 0xFF ;
 737                     *destination++ = 0xFF ;
 738                 }
 739             }
 740         }
 741         EndRawAccess() ;
 742     }
 743     else
 744     {
 745         wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 746     }
 747 }
 748
 749 wxBitmap::wxBitmap(int w, int h, int d)
 750 {
 751     (void)Create(w, h, d);
 752 }
 753
 754 wxBitmap::wxBitmap(void *data, wxBitmapType type, int width, int height, int depth)
 755 {
 756     (void) Create(data, type, width, height, depth);
 757 }
 758
 759 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 760 {
 761     LoadFile(filename, type);
 762 }
 763
 764 wxBitmap::wxBitmap(const char **bits)
 765 {
 766     (void) CreateFromXpm(bits);
 767 }
 768
 769 wxBitmap::wxBitmap(char **bits)
 770 {
 771     (void) CreateFromXpm((const char **)bits);
 772 }
 773
 774 void* wxBitmap::GetRawAccess() const
 775 {
 776     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 777     return M_BITMAPDATA->GetRawAccess() ;
 778 }
 779
 780 void* wxBitmap::BeginRawAccess()
 781 {
 782     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 783     return M_BITMAPDATA->BeginRawAccess() ;
 784 }
 785
 786 void wxBitmap::EndRawAccess()
 787 {
 788     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 789     M_BITMAPDATA->EndRawAccess() ;
 790 }
 791
 792 bool wxBitmap::CreateFromXpm(const char **bits)
 793 {
 794     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
 795     wxXPMDecoder decoder;
 796     wxImage img = decoder.ReadData(bits);
 797     wxCHECK_MSG( img.Ok(), FALSE, wxT("invalid bitmap data") )
 798     *this = wxBitmap(img);
 799     return TRUE;
 800 }
 801
 802 #if wxMAC_USE_CORE_GRAPHICS
 803 WXCGIMAGEREF wxBitmap::CGImageCreate() const
 804 {
 805     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 806     return M_BITMAPDATA->CGImageCreate() ;
 807 }
 808 #endif
 809
 810 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
 811 {
 812     wxCHECK_MSG( Ok() &&
 813                 (rect.x >= 0) && (rect.y >= 0) &&
 814                 (rect.x+rect.width <= GetWidth()) &&
 815                 (rect.y+rect.height <= GetHeight()),
 816                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 817
 818
 819     wxBitmap ret( rect.width, rect.height, GetDepth() );
 820     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 821
 822
 823     int sourcewidth = GetWidth() ;
 824     int destwidth = rect.width ;
 825     int destheight = rect.height ;
 826     {
 827         unsigned char * sourcedata = (unsigned char*) GetRawAccess() ;
 828         unsigned char * destdata = (unsigned char*) ret.BeginRawAccess() ;
 829         int sourcelinesize = sourcewidth * 4 ;
 830         int destlinesize = destwidth * 4 ;
 831         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
 832         unsigned char *dest = destdata ;
 833         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 834         {
 835             memcpy( dest , source , destlinesize ) ;
 836         }
 837     }
 838     ret.EndRawAccess() ;
 839
 840     if ( M_BITMAPDATA->m_bitmapMask )
 841     {
 842         wxMemoryBuffer maskbuf ;
 843         int rowBytes = ( destwidth + 3 ) & 0xFFFFFFC ;
 844         size_t maskbufsize = rowBytes * destheight ;
 845         unsigned char * destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
 846
 847         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow()  ;
 848         int destlinesize = rowBytes ;
 849         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
 850         source += rect.x + rect.y * sourcelinesize ;
 851         unsigned char *dest = destdata ;
 852
 853         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 854         {
 855             memcpy( dest , source , destlinesize ) ;
 856         }
 857         maskbuf.UngetWriteBuf( maskbufsize ) ;
 858         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
 859     }
 860     else if ( HasAlpha() )
 861         ret.UseAlpha() ;
 862
 863     return ret;
 864 }
 865
 866 bool wxBitmap::Create(int w, int h, int d)
 867 {
 868     UnRef();
 869
 870     if ( d < 0 )
 871         d = wxDisplayDepth() ;
 872
 873     m_refData = new wxBitmapRefData( w , h , d );
 874
 875     return M_BITMAPDATA->Ok() ;
 876 }
 877
 878 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
 879 {
 880     UnRef();
 881
 882     wxBitmapHandler *handler = FindHandler(type);
 883
 884     if ( handler )
 885     {
 886         m_refData = new wxBitmapRefData;
 887
 888         return handler->LoadFile(this, filename, type, -1, -1);
 889     }
 890     else
 891     {
 892         wxImage loadimage(filename, type);
 893         if (loadimage.Ok()) {
 894             *this = loadimage;
 895             return true;
 896         }
 897     }
 898     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 899     return false;
 900 }
 901
 902 bool wxBitmap::Create(void *data, wxBitmapType type, int width, int height, int depth)
 903 {
 904     UnRef();
 905
 906     m_refData = new wxBitmapRefData;
 907
 908     wxBitmapHandler *handler = FindHandler(type);
 909
 910     if ( handler == NULL ) {
 911         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 912
 913         return FALSE;
 914     }
 915
 916     return handler->Create(this, data, type, width, height, depth);
 917 }
 918
 919 wxBitmap::wxBitmap(const wxImage& image, int depth)
 920 {
 921     wxCHECK_RET( image.Ok(), wxT("invalid image") )
 922
 923     // width and height of the device-dependent bitmap
 924     int width = image.GetWidth();
 925     int height = image.GetHeight();
 926
 927     m_refData = new wxBitmapRefData( width , height , depth ) ;;
 928
 929     // Create picture
 930
 931     bool hasAlpha = false ;
 932
 933     if ( image.HasMask() )
 934     {
 935         // takes precedence, don't mix with alpha info
 936     }
 937     else
 938     {
 939         hasAlpha = image.HasAlpha() ;
 940     }
 941
 942     if ( hasAlpha )
 943         UseAlpha() ;
 944
 945     unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 946
 947     register unsigned char* data = image.GetData();
 948     const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
 949     for (int y = 0; y < height; y++)
 950     {
 951         for (int x = 0; x < width; x++)
 952         {
 953             if ( hasAlpha )
 954             {
 955                 const unsigned char a = *alpha++;
 956                 *destination++ = a ;
 957 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 958                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 959                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 960                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 961 #else
 962                 *destination++ = *data++ ;
 963                 *destination++ = *data++ ;
 964                 *destination++ = *data++ ;
 965 #endif
 966             }
 967             else
 968             {
 969                 *destination++ = 0xFF ;
 970                 *destination++ = *data++ ;
 971                 *destination++ = *data++ ;
 972                 *destination++ = *data++ ;
 973             }
 974         }
 975     }
 976     EndRawAccess() ;
 977     if ( image.HasMask() )
 978     {
 979         SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
 980     }
 981 }
 982
 983 wxImage wxBitmap::ConvertToImage() const
 984 {
 985     wxImage image;
 986
 987     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 988
 989     // create an wxImage object
 990     int width = GetWidth();
 991     int height = GetHeight();
 992     image.Create( width, height );
 993
 994     unsigned char *data = image.GetData();
 995     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
 996
 997     unsigned char* source = (unsigned char*) GetRawAccess() ;
 998
 999     bool hasAlpha = false ;
1000     bool hasMask = false ;
1001     unsigned char *alpha = NULL ;
1002     unsigned char *mask = NULL ;
1003     if ( HasAlpha() )
1004     {
1005         hasAlpha = true ;
1006     }
1007
1008     if ( GetMask() )
1009     {
1010         hasMask = true ;
1011         mask = (unsigned char*) GetMask()->GetRawAccess() ;
1012     }
1013
1014     if ( hasAlpha )
1015     {
1016         image.SetAlpha() ;
1017         alpha = image.GetAlpha() ;
1018     }
1019     int index = 0;
1020
1021     // The following masking algorithm is the same as well in msw/gtk:
1022     // the colour used as transparent one in wxImage and the one it is
1023     // replaced with when it really occurs in the bitmap
1024     static const int MASK_RED = 1;
1025     static const int MASK_GREEN = 2;
1026     static const int MASK_BLUE = 3;
1027     static const int MASK_BLUE_REPLACEMENT = 2;
1028
1029     for (int yy = 0; yy < height; yy++)
1030     {
1031         for (int xx = 0; xx < width; xx++)
1032         {
1033             long color = *((long*) source) ;
1034             unsigned char a = ((color&0xFF000000) >> 24) ;
1035             unsigned char r = ((color&0x00FF0000) >> 16) ;
1036             unsigned char g = ((color&0x0000FF00) >> 8) ;
1037             unsigned char b = (color&0x000000FF);
1038             if ( hasMask )
1039             {
1040                 if ( *mask++ == 0 )
1041                 {
1042                     if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
1043                         b = MASK_BLUE_REPLACEMENT ;
1044                     else
1045                     {
1046                         r = MASK_RED ;
1047                         g = MASK_GREEN ;
1048                         b = MASK_BLUE ;
1049                     }
1050                 }
1051             }
1052             else if ( hasAlpha )
1053                 *alpha++ = a ;
1054
1055             data[index    ] = r ;
1056             data[index + 1] = g ;
1057             data[index + 2] = b ;
1058             index += 3;
1059             source += 4 ;
1060         }
1061     }
1062     if ( hasMask )
1063         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
1064     return image;
1065 }
1066
1067
1068 bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type,
1069                         const wxPalette *palette) const
1070 {
1071     wxBitmapHandler *handler = FindHandler(type);
1072
1073     if ( handler )
1074     {
1075         return handler->SaveFile(this, filename, type, palette);
1076     }
1077     else
1078     {
1079         wxImage image = ConvertToImage();
1080
1081         return image.SaveFile(filename, type);
1082     }
1083
1084     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1085     return false;
1086 }
1087
1088 bool wxBitmap::Ok() const
1089 {
1090    return (M_BITMAPDATA && M_BITMAPDATA->Ok());
1091 }
1092
1093 int wxBitmap::GetHeight() const
1094 {
1095    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1096
1097    return M_BITMAPDATA->GetHeight();
1098 }
1099
1100 int wxBitmap::GetWidth() const
1101 {
1102    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1103
1104    return M_BITMAPDATA->GetWidth() ;
1105 }
1106
1107 int wxBitmap::GetDepth() const
1108 {
1109    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1110
1111    return M_BITMAPDATA->GetDepth();
1112 }
1113
1114 #if WXWIN_COMPATIBILITY_2_4
1115
1116 int wxBitmap::GetQuality() const
1117 {
1118     return 0;
1119 }
1120
1121 #endif
1122
1123 wxMask *wxBitmap::GetMask() const
1124 {
1125    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1126
1127    return M_BITMAPDATA->m_bitmapMask;
1128 }
1129
1130 bool wxBitmap::HasAlpha() const
1131 {
1132    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1133
1134    return M_BITMAPDATA->HasAlpha() ;
1135 }
1136
1137 void wxBitmap::SetWidth(int w)
1138 {
1139     if (!M_BITMAPDATA)
1140         m_refData = new wxBitmapRefData;
1141
1142     M_BITMAPDATA->SetWidth(w);
1143 }
1144
1145 void wxBitmap::SetHeight(int h)
1146 {
1147     if (!M_BITMAPDATA)
1148         m_refData = new wxBitmapRefData;
1149
1150     M_BITMAPDATA->SetHeight(h);
1151 }
1152
1153 void wxBitmap::SetDepth(int d)
1154 {
1155     if (!M_BITMAPDATA)
1156         m_refData = new wxBitmapRefData;
1157
1158     M_BITMAPDATA->SetDepth(d);
1159 }
1160
1161 #if WXWIN_COMPATIBILITY_2_4
1162
1163 void wxBitmap::SetQuality(int WXUNUSED(quality))
1164 {
1165 }
1166
1167 #endif
1168
1169 void wxBitmap::SetOk(bool isOk)
1170 {
1171     if (!M_BITMAPDATA)
1172         m_refData = new wxBitmapRefData;
1173
1174     M_BITMAPDATA->SetOk(isOk);
1175 }
1176
1177 #if wxUSE_PALETTE
1178 wxPalette *wxBitmap::GetPalette() const
1179 {
1180    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1181
1182    return &M_BITMAPDATA->m_bitmapPalette;
1183 }
1184
1185 void wxBitmap::SetPalette(const wxPalette& palette)
1186 {
1187     if (!M_BITMAPDATA)
1188         m_refData = new wxBitmapRefData;
1189
1190     M_BITMAPDATA->m_bitmapPalette = palette ;
1191 }
1192 #endif // wxUSE_PALETTE
1193
1194 void wxBitmap::SetMask(wxMask *mask)
1195 {
1196     if (!M_BITMAPDATA)
1197         m_refData = new wxBitmapRefData;
1198
1199     // Remove existing mask if there is one.
1200     delete M_BITMAPDATA->m_bitmapMask;
1201
1202     M_BITMAPDATA->m_bitmapMask = mask ;
1203 }
1204
1205 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1206 {
1207     return WXHBITMAP(M_BITMAPDATA->GetHBITMAP((GWorldPtr*)mask));
1208 }
1209
1210 // ----------------------------------------------------------------------------
1211 // wxMask
1212 // ----------------------------------------------------------------------------
1213
1214 wxMask::wxMask()
1215 {
1216     Init() ;
1217 }
1218
1219 // Construct a mask from a bitmap and a colour indicating
1220 // the transparent area
1221 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
1222 {
1223     Init() ;
1224     Create(bitmap, colour);
1225 }
1226
1227 // Construct a mask from a mono bitmap (copies the bitmap).
1228 wxMask::wxMask(const wxBitmap& bitmap)
1229 {
1230     Init() ;
1231     Create(bitmap);
1232 }
1233
1234 // Construct a mask from a mono bitmap (copies the bitmap).
1235 wxMask::wxMask(const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1236 {
1237     Init() ;
1238     Create(data, width , height , bytesPerRow );
1239 }
1240
1241 wxMask::~wxMask()
1242 {
1243     if ( m_maskBitmap )
1244     {
1245         DisposeGWorld( (GWorldPtr) m_maskBitmap ) ;
1246         m_maskBitmap = NULL ;
1247     }
1248 }
1249
1250 void wxMask::Init()
1251 {
1252     m_width = m_height = m_bytesPerRow = 0 ;
1253     m_maskBitmap = NULL ;
1254 }
1255
1256 void *wxMask::GetRawAccess() const
1257 {
1258     return m_memBuf.GetData() ;
1259 }
1260
1261 // this can be a k8IndexedGrayPixelFormat GWorld, because it never stores other values than black or white
1262 // so no rainbox colors will be created by QD when blitting
1263
1264 void wxMask::RealizeNative()
1265 {
1266     if ( m_maskBitmap )
1267     {
1268        DisposeGWorld(  (GWorldPtr) m_maskBitmap ) ;
1269        m_maskBitmap = NULL ;
1270     }
1271     Rect rect = { 0 , 0 , m_height , m_width } ;
1272     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_maskBitmap , k8IndexedGrayPixelFormat , &rect , NULL , NULL , 0 ,
1273         (char*) m_memBuf.GetData() , m_bytesPerRow ) ) ;
1274 }
1275
1276 // Create a mask from a mono bitmap (copies the bitmap).
1277 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1278 {
1279     m_memBuf = data ;
1280     m_width = width ;
1281     m_height = height ;
1282     m_bytesPerRow = bytesPerRow ;
1283     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1284     RealizeNative() ;
1285     return true ;
1286 }
1287
1288 // Create a mask from a mono bitmap (copies the bitmap).
1289 bool wxMask::Create(const wxBitmap& bitmap)
1290 {
1291     m_width = bitmap.GetWidth() ;
1292     m_height = bitmap.GetHeight() ;
1293     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1294     size_t size = m_bytesPerRow * m_height ;
1295     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1296     memset( destdatabase , 0 , size ) ;
1297     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1298     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1299     {
1300         unsigned char *destdata= destdatabase ;
1301         for( int x = 0 ; x < m_width ; ++x )
1302         {
1303             srcdata++ ;
1304             unsigned char r = *srcdata++ ;
1305             unsigned char g = *srcdata++ ;
1306             unsigned char b = *srcdata++ ;
1307             if ( ( r + g + b ) > 0x10 )
1308                 *destdata++ = 0x00 ;
1309             else
1310                 *destdata++ = 0xFF ;
1311         }
1312     }
1313     m_memBuf.UngetWriteBuf( size ) ;
1314     RealizeNative() ;
1315     return TRUE;
1316 }
1317
1318 // Create a mask from a bitmap and a colour indicating
1319 // the transparent area
1320 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1321 {
1322     m_width = bitmap.GetWidth() ;
1323     m_height = bitmap.GetHeight() ;
1324     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1325     size_t size = m_bytesPerRow * m_height ;
1326
1327     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1328     memset( destdatabase , 0 , size ) ;
1329     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1330     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow)
1331     {
1332         unsigned char *destdata= destdatabase ;
1333         for( int x = 0 ; x < m_width ; ++x )
1334         {
1335             srcdata++ ;
1336             unsigned char r = *srcdata++ ;
1337             unsigned char g = *srcdata++ ;
1338             unsigned char b = *srcdata++ ;
1339             if ( colour == wxColour( r , g , b) )
1340                 *destdata++ = 0x00 ;
1341             else
1342                 *destdata++ = 0xFF ;
1343         }
1344     }
1345     m_memBuf.UngetWriteBuf( size ) ;
1346     RealizeNative() ;
1347     return TRUE;
1348 }
1349
1350 WXHBITMAP wxMask::GetHBITMAP() const
1351 {
1352     return m_maskBitmap ;
1353 }
1354
1355 // ----------------------------------------------------------------------------
1356 // wxBitmapHandler
1357 // ----------------------------------------------------------------------------
1358
1359 wxBitmapHandler::~wxBitmapHandler()
1360 {
1361 }
1362
1363 bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
1364 {
1365     return FALSE;
1366 }
1367
1368 bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1369         int desiredWidth, int desiredHeight)
1370 {
1371     return FALSE;
1372 }
1373
1374 bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
1375 {
1376     return FALSE;
1377 }
1378
1379 // ----------------------------------------------------------------------------
1380 // Standard Handlers
1381 // ----------------------------------------------------------------------------
1382
1383 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1384 {
1385     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1386 public:
1387     inline wxPICTResourceHandler()
1388     {
1389         SetName(wxT("Macintosh Pict resource"));
1390         SetExtension(wxEmptyString);
1391         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1392     };
1393
1394     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1395           int desiredWidth, int desiredHeight);
1396 };
1397 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1398
1399
1400 bool  wxPICTResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1401           int desiredWidth, int desiredHeight)
1402 {
1403 #if wxUSE_METAFILE
1404     Str255 theName ;
1405     wxMacStringToPascal( name , theName ) ;
1406
1407     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1408     if ( thePict )
1409     {
1410         wxMetafile mf ;
1411         mf.SetHMETAFILE((WXHMETAFILE) thePict ) ;
1412         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1413         wxMemoryDC dc ;
1414         dc.SelectObject( *bitmap ) ;
1415         mf.Play( &dc ) ;
1416         dc.SelectObject( wxNullBitmap ) ;
1417         return TRUE ;
1418     }
1419 #endif //wxUSE_METAFILE
1420     return FALSE ;
1421 }
1422
1423
1424 void wxBitmap::InitStandardHandlers()
1425 {
1426     AddHandler(new wxPICTResourceHandler) ;
1427     AddHandler(new wxICONResourceHandler) ;
1428 }
1429
1430 // ----------------------------------------------------------------------------
1431 // raw bitmap access support
1432 // ----------------------------------------------------------------------------
1433
1434 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1435 {
1436     if ( !Ok() )
1437     {
1438         // no bitmap, no data (raw or otherwise)
1439         return NULL;
1440     }
1441
1442     data.m_width = GetWidth() ;
1443     data.m_height = GetHeight() ;
1444     data.m_stride = GetWidth() * 4 ;
1445     return GetRawAccess() ;
1446 }
1447
1448 void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
1449 {
1450     if ( !Ok() )
1451         return;
1452
1453     // TODO : if we have some information about the API we should check
1454     // this code looks strange...
1455
1456     if ( M_BITMAPDATA->HasAlpha() )
1457     {
1458         wxAlphaPixelData& data = (wxAlphaPixelData&)dataBase;
1459
1460         int w = data.GetWidth(),
1461             h = data.GetHeight();
1462
1463         wxBitmap bmpMask(GetWidth(), GetHeight(), 32);
1464         wxAlphaPixelData dataMask(bmpMask, data.GetOrigin(), wxSize(w, h));
1465         wxAlphaPixelData::Iterator pMask(dataMask),
1466                                    p(data);
1467         for ( int y = 0; y < h; y++ )
1468         {
1469             wxAlphaPixelData::Iterator rowStartMask = pMask,
1470                                        rowStart = p;
1471
1472             for ( int x = 0; x < w; x++ )
1473             {
1474                 const wxAlphaPixelData::Iterator::ChannelType
1475                     alpha = p.Alpha();
1476
1477                 pMask.Red() = alpha;
1478                 pMask.Green() = alpha;
1479                 pMask.Blue() = alpha;
1480
1481                 ++p;
1482                 ++pMask;
1483             }
1484
1485             p = rowStart;
1486             p.OffsetY(data, 1);
1487
1488             pMask = rowStartMask;
1489             pMask.OffsetY(dataMask, 1);
1490         }
1491
1492         SetMask(new wxMask(bmpMask));
1493     }
1494 }
1495
1496 void wxBitmap::UseAlpha()
1497 {
1498     // remember that we are using alpha channel, we'll need to create a proper
1499     // mask in UngetRawData()
1500     M_BITMAPDATA->UseAlpha( true );
1501 }