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 IconFamilyHandle wxMacCreateIconFamily(const wxBitmap& bitmap)
  55 {
  56     wxBitmap bmp = bitmap ;
  57     // setup the header properly
  58
  59     IconFamilyHandle iconFamily = (IconFamilyHandle) NewHandle(8) ;
  60     (**iconFamily).resourceType = kIconFamilyType ;
  61     (**iconFamily).resourceSize = sizeof(OSType) + sizeof(Size);
  62
  63     int w = bmp.GetWidth() ;
  64     int h = bmp.GetHeight() ;
  65     int sz = wxMax( w , h ) ;
  66
  67     OSType dataType ;
  68     OSType maskType ;
  69
  70     if ( sz == 64 )
  71     {
  72         bmp = wxBitmap( bitmap.ConvertToImage().Scale( 128 , 128 ) ) ;
  73         sz = 128 ;
  74         h = w = 128 ;
  75     }
  76     else if ( sz == 24 )
  77     {
  78         bmp = wxBitmap( bitmap.ConvertToImage().Scale( 48 , 48 ) ) ;
  79         sz = 48 ;
  80         h = w = 48 ;
  81     }
  82
  83     if ( sz == 128 )
  84     {
  85         dataType = kThumbnail32BitData ;
  86         maskType = kThumbnail8BitMask ;
  87     }
  88     else if ( sz == 48 )
  89     {
  90         dataType = kHuge32BitData ;
  91         maskType = kHuge8BitMask ;
  92     }
  93     else if ( sz == 32 )
  94     {
  95         dataType = kLarge32BitData ;
  96         maskType = kLarge8BitMask ;
  97     }
  98     else if ( sz == 16 )
  99     {
 100         dataType = kSmall32BitData ;
 101         maskType = kSmall8BitMask ;
 102     }
 103     else
 104     {
 105         return NULL ;
 106     }
 107
 108     Handle data = NULL ;
 109     Handle maskdata = NULL ;
 110     unsigned char * maskptr = NULL ;
 111     unsigned char * ptr = NULL ;
 112     size_t size ;
 113     size_t masksize ;
 114
 115     size = sz * sz * 4 ;
 116     data = NewHandle( size) ;
 117     HLock( data ) ;
 118     ptr = (unsigned char*) *data ;
 119     memset( ptr , 0, size ) ;
 120
 121     masksize = sz * sz ;
 122     maskdata = NewHandle( masksize ) ;
 123     HLock( maskdata ) ;
 124     maskptr = (unsigned char*) *maskdata ;
 125     memset( maskptr , 0 , masksize ) ;
 126
 127     bool hasAlpha = bmp.HasAlpha() ;
 128     wxMask *mask = bmp.GetMask() ;
 129     unsigned char * source = (unsigned char*) bmp.GetRawAccess() ;
 130     unsigned char * masksource = mask ? (unsigned char*) mask->GetRawAccess() : NULL ;
 131     for ( int y = 0 ; y < h ; ++y )
 132     {
 133         unsigned char * dest = ptr + y * sz * 4 ;
 134         unsigned char * maskdest = maskptr + y * sz ;
 135         for ( int x = 0 ; x < w ; ++x )
 136         {
 137             unsigned char a = *source ++ ;
 138             unsigned char r = *source ++ ;
 139             unsigned char g = *source ++ ;
 140             unsigned char b = *source ++ ;
 141
 142             *dest++ = 0 ;
 143             *dest++ = r ;
 144             *dest++ = g ;
 145             *dest++ = b ;
 146
 147             if ( mask )
 148                 *maskdest++ = *masksource++ ;
 149             else if ( hasAlpha )
 150                 *maskdest++ = a ;
 151             else
 152                 *maskdest++ = 0xFF ;
 153         }
 154     }
 155
 156     OSStatus err = SetIconFamilyData( iconFamily, dataType , data ) ;
 157     wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 158
 159     err = SetIconFamilyData( iconFamily, maskType , maskdata ) ;
 160     wxASSERT_MSG( err == noErr , wxT("Error when adding mask") ) ;
 161     HUnlock( data ) ;
 162     HUnlock( maskdata ) ;
 163     DisposeHandle( data ) ;
 164     DisposeHandle( maskdata ) ;
 165     return iconFamily ;
 166 }
 167
 168 IconRef wxMacCreateIconRef(const wxBitmap& bmp)
 169 {
 170     IconFamilyHandle iconFamily = wxMacCreateIconFamily( bmp ) ;
 171     if ( iconFamily == NULL )
 172         return NULL ;
 173
 174     IconRef iconRef ;
 175     static int iconCounter = 2 ;
 176
 177     OSStatus err = RegisterIconRefFromIconFamily( 'WXNG' , (OSType) iconCounter, iconFamily, &iconRef ) ;
 178     UInt16 owners ;
 179     err = GetIconRefOwners(iconRef , &owners ) ;
 180
 181     wxASSERT_MSG( err == noErr , wxT("Error when adding bitmap") ) ;
 182     // we have to retain a reference, as Unregister will decrement it
 183     AcquireIconRef( iconRef ) ;
 184     UnregisterIconRef( 'WXNG' , (OSType) iconCounter ) ;
 185     DisposeHandle( (Handle) iconFamily ) ;
 186     ++iconCounter ;
 187
 188     return iconRef ;
 189 }
 190
 191 PicHandle wxMacCreatePicHandle( const wxBitmap &bmp )
 192 {
 193     CGrafPtr        origPort = NULL ;
 194     GDHandle        origDev = NULL ;
 195     PicHandle       pict = NULL ;
 196     GWorldPtr       wp = NULL ;
 197     GWorldPtr       mask = NULL ;
 198
 199     GetGWorld( &origPort , &origDev ) ;
 200
 201     wp = (GWorldPtr) bmp.GetHBITMAP( (WXHBITMAP*) &mask ) ;
 202
 203     SetGWorld( wp , NULL ) ;
 204     Rect portRect ;
 205     GetPortBounds( wp , &portRect ) ;
 206     pict = OpenPicture(&portRect);
 207
 208     if(pict)
 209     {
 210         RGBColor       white = { 0xffff ,0xffff , 0xffff } ;
 211         RGBColor       black = { 0x0000 ,0x0000 , 0x0000 } ;
 212         RGBForeColor( &black ) ;
 213         RGBBackColor( &white ) ;
 214
 215         LockPixels( GetGWorldPixMap( wp ) ) ;
 216         CopyBits(GetPortBitMapForCopyBits(wp),
 217                 GetPortBitMapForCopyBits(wp),
 218                 &portRect,
 219                 &portRect,
 220                 srcCopy,NULL);
 221         UnlockPixels( GetGWorldPixMap( wp ) ) ;
 222         ClosePicture();
 223     }
 224     SetGWorld( origPort , origDev ) ;
 225
 226     return pict;
 227 }
 228
 229 void wxMacCreateBitmapButton( ControlButtonContentInfo*info , const wxBitmap& bitmap , int forceType )
 230 {
 231     memset( info , 0 , sizeof(ControlButtonContentInfo) ) ;
 232     if ( bitmap.Ok() )
 233     {
 234         wxBitmapRefData * bmap = (wxBitmapRefData*) ( bitmap.GetRefData()) ;
 235         if ( bmap == NULL )
 236             return ;
 237         info->contentType = kControlContentIconRef ;
 238         info->u.iconRef = wxMacCreateIconRef( bitmap ) ;
 239         wxASSERT_MSG( info->u.iconRef , wxT("Converting to IconRef not possible") ) ;
 240 #if wxMAC_USE_CORE_GRAPHICS
 241         /*
 242             // only on 10.4 more controls will accept a CGImage
 243
 244             info->contentType = kControlContentCGImageRef ;
 245             info->u.imageRef = (CGImageRef) bmap->CGImageCreate() ;
 246         */
 247 #endif
 248     }
 249 }
 250
 251 void wxMacReleaseBitmapButton( ControlButtonContentInfo*info )
 252 {
 253     if ( info->contentType == kControlContentIconRef )
 254     {
 255         ReleaseIconRef(info->u.iconRef) ;
 256     }
 257 #if wxMAC_USE_CORE_GRAPHICS && MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
 258     else if ( info->contentType == kControlContentCGImageRef )
 259     {
 260         CGImageRelease( info->u.imageRef ) ;
 261     }
 262 #endif
 263     else
 264     {
 265         wxFAIL_MSG(wxT("Unexpected bitmap type") ) ;
 266     }
 267 }
 268
 269 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
 270
 271 void wxBitmapRefData::Init()
 272 {
 273     m_width = 0 ;
 274     m_height = 0 ;
 275     m_depth = 0 ;
 276     m_ok = false ;
 277     m_bitmapMask = NULL ;
 278 #if wxMAC_USE_CORE_GRAPHICS
 279     m_cgImageRef = NULL ;
 280 #endif
 281     m_hBitmap = NULL ;
 282     m_hMaskBitmap = NULL;
 283     m_maskBytesPerRow = NULL ;
 284
 285     m_rawAccessCount = 0 ;
 286     m_hasAlpha = false;
 287 }
 288
 289 wxBitmapRefData::wxBitmapRefData()
 290 {
 291     Init() ;
 292 }
 293
 294 wxBitmapRefData::wxBitmapRefData( int w , int h , int d )
 295 {
 296     Init() ;
 297     Create( w , h , d ) ;
 298 }
 299
 300 bool wxBitmapRefData::Create( int w , int h , int d )
 301 {
 302     m_width = w ;
 303     m_height = h ;
 304     m_depth = d ;
 305
 306     m_bytesPerRow = w * 4 ;
 307     size_t size = m_bytesPerRow * h ;
 308     void*  data = m_memBuf.GetWriteBuf(size) ;
 309     memset( data ,  0 , size) ;
 310     m_memBuf.UngetWriteBuf(size) ;
 311
 312     m_hBitmap = NULL ;
 313     Rect rect = { 0 , 0 , m_height , m_width } ;
 314     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hBitmap , k32ARGBPixelFormat , &rect , NULL , NULL , 0 ,
 315         (char*) data , m_bytesPerRow ) ) ;
 316     wxASSERT_MSG( m_hBitmap , wxT("Unable to create GWorld context") ) ;
 317     m_ok = ( m_hBitmap != NULL ) ;
 318
 319     return m_ok ;
 320 }
 321
 322 void wxBitmapRefData::UseAlpha( bool use )
 323 {
 324     if ( m_hasAlpha == use )
 325         return ;
 326
 327     m_hasAlpha = use ;
 328     if ( m_hasAlpha )
 329     {
 330         int width = GetWidth() ;
 331         int height = GetHeight() ;
 332         m_maskBytesPerRow = ( width + 3 ) & 0xFFFFFFC ;
 333         size_t size = height * m_maskBytesPerRow ;
 334         unsigned char * data = (unsigned char * ) m_maskMemBuf.GetWriteBuf( size ) ;
 335         memset( data , 0 , size ) ;
 336         wxASSERT( m_hMaskBitmap == NULL ) ;
 337         Rect rect = { 0 , 0 , height , width } ;
 338         verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_hMaskBitmap , k8IndexedGrayPixelFormat , &rect , NULL , NULL , 0 ,
 339             (char*) data , m_maskBytesPerRow ) ) ;
 340         wxASSERT_MSG( m_hMaskBitmap , wxT("Unable to create GWorld context for alpha mask") ) ;
 341         m_maskMemBuf.UngetWriteBuf(size) ;
 342 #if !wxMAC_USE_CORE_GRAPHICS
 343         UpdateAlphaMask() ;
 344 #endif
 345     }
 346     else
 347     {
 348         DisposeGWorld( m_hMaskBitmap ) ;
 349         m_hMaskBitmap = NULL ;
 350         m_maskBytesPerRow = 0 ;
 351     }
 352 }
 353
 354 void *wxBitmapRefData::GetRawAccess() const
 355 {
 356     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 357     return m_memBuf.GetData() ;
 358 }
 359
 360 void *wxBitmapRefData::BeginRawAccess()
 361 {
 362     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") ) ;
 363     wxASSERT( m_rawAccessCount == 0 ) ;
 364     ++m_rawAccessCount ;
 365 #if wxMAC_USE_CORE_GRAPHICS
 366      // we must destroy an existing cached image, as
 367     // the bitmap data may change now
 368     if ( m_cgImageRef )
 369     {
 370         CGImageRelease( m_cgImageRef ) ;
 371         m_cgImageRef = NULL ;
 372     }
 373 #endif
 374     return m_memBuf.GetData() ;
 375 }
 376
 377 void wxBitmapRefData::EndRawAccess()
 378 {
 379     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 380     wxASSERT( m_rawAccessCount == 1 ) ;
 381     --m_rawAccessCount ;
 382 #if !wxMAC_USE_CORE_GRAPHICS
 383     UpdateAlphaMask() ;
 384 #endif
 385 }
 386
 387
 388 #if wxMAC_USE_CORE_GRAPHICS
 389 void wxMacMemoryBufferReleaseProc(void *info, const void *data, size_t size)
 390 {
 391     wxMemoryBuffer* membuf = (wxMemoryBuffer*) info ;
 392     wxASSERT( data == membuf->GetData() ) ;
 393     delete membuf ;
 394 }
 395
 396 CGImageRef wxBitmapRefData::CGImageCreate() const
 397 {
 398     wxASSERT( m_ok ) ;
 399     wxASSERT( m_rawAccessCount >= 0 ) ;
 400     CGImageRef image ;
 401     if ( m_rawAccessCount > 0 || m_cgImageRef == NULL )
 402     {
 403         size_t imageSize = m_width * m_height * 4 ;
 404         void * dataBuffer = m_memBuf.GetData() ;
 405         int w = m_width ;
 406         int h = m_height ;
 407         CGImageAlphaInfo alphaInfo = kCGImageAlphaNoneSkipFirst ;
 408         wxMemoryBuffer* membuf = NULL ;
 409
 410         if ( m_bitmapMask )
 411         {
 412             membuf = new wxMemoryBuffer( imageSize ) ;
 413             memcpy( membuf->GetData() , dataBuffer , imageSize ) ;
 414             unsigned char *sourcemaskstart = (unsigned char *) m_bitmapMask->GetRawAccess() ;
 415             int maskrowbytes = m_bitmapMask->GetBytesPerRow() ;
 416             unsigned char *destalpha = (unsigned char *) membuf->GetData() ;
 417             alphaInfo = kCGImageAlphaFirst ;
 418             for ( int y = 0 ; y < h ; ++y , sourcemaskstart += maskrowbytes)
 419             {
 420                 unsigned char *sourcemask = sourcemaskstart ;
 421                 for( int x = 0 ; x < w ; ++x , sourcemask++ , destalpha += 4 )
 422                 {
 423                     *destalpha = *sourcemask ;
 424                 }
 425             }
 426         }
 427         else if ( m_hasAlpha )
 428         {
 429 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 430             alphaInfo = kCGImageAlphaPremultipliedFirst ;
 431 #else
 432             alphaInfo = kCGImageAlphaFirst ;
 433 #endif
 434             membuf = new wxMemoryBuffer( m_memBuf ) ;
 435         }
 436         else
 437         {
 438             membuf = new wxMemoryBuffer( m_memBuf ) ;
 439         }
 440         CGColorSpaceRef colorSpace = wxMacGetGenericRGBColorSpace();
 441         CGDataProviderRef dataProvider =
 442             CGDataProviderCreateWithData( membuf , (const void *)membuf->GetData() , imageSize,
 443                 wxMacMemoryBufferReleaseProc );
 444         image =
 445             ::CGImageCreate( w, h, 8 , 32 , 4 * m_width , colorSpace, alphaInfo ,
 446                         dataProvider, NULL , false , kCGRenderingIntentDefault );
 447         CGDataProviderRelease( dataProvider);
 448     }
 449     else
 450     {
 451         image = m_cgImageRef ;
 452         CGImageRetain( image ) ;
 453     }
 454     if ( m_rawAccessCount == 0 && m_cgImageRef == NULL)
 455     {
 456         // we keep it for later use
 457         m_cgImageRef = image ;
 458         CGImageRetain( image ) ;
 459     }
 460     return image ;
 461 }
 462 #endif
 463
 464 GWorldPtr wxBitmapRefData::GetHBITMAP(GWorldPtr* mask) const
 465 {
 466     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 467     if ( mask )
 468     {
 469         *mask = NULL ;
 470         if ( m_bitmapMask )
 471             *mask = (GWorldPtr) m_bitmapMask->GetHBITMAP() ;
 472         else if ( m_hasAlpha )
 473         {
 474 #if !wxMAC_USE_CORE_GRAPHICS
 475             if ( m_rawAccessCount > 0 )
 476                 UpdateAlphaMask() ;
 477 #else
 478             // this structure is not kept in synch when using CG, so if someone
 479             // is really accessing the Graphports, we have to sync it
 480             UpdateAlphaMask() ;
 481 #endif
 482             *mask = m_hMaskBitmap ;
 483         }
 484     }
 485     return m_hBitmap ;
 486 }
 487
 488 void wxBitmapRefData::UpdateAlphaMask() const
 489 {
 490     if ( m_hasAlpha )
 491     {
 492         unsigned char *sourcemask = (unsigned char *) GetRawAccess() ;
 493         unsigned char *destalphabase = (unsigned char *) m_maskMemBuf.GetData() ;
 494
 495         int h = GetHeight() ;
 496         int w = GetWidth() ;
 497
 498         for ( int y = 0 ; y < h ; ++y , destalphabase += m_maskBytesPerRow )
 499         {
 500             unsigned char* destalpha = destalphabase ;
 501             for( int x = 0 ; x < w ; ++x , sourcemask += 4, ++destalpha )
 502             {
 503                 *destalpha = *sourcemask ;
 504             }
 505         }
 506     }
 507 }
 508
 509 void wxBitmapRefData::Free()
 510 {
 511     wxASSERT_MSG( m_rawAccessCount == 0 , wxT("Bitmap still selected when destroyed") ) ;
 512
 513 #if wxMAC_USE_CORE_GRAPHICS
 514     if ( m_cgImageRef )
 515     {
 516         CGImageRelease( m_cgImageRef ) ;
 517         m_cgImageRef = NULL ;
 518     }
 519 #endif
 520     if ( m_hBitmap )
 521     {
 522         DisposeGWorld( MAC_WXHBITMAP(m_hBitmap) ) ;
 523         m_hBitmap = NULL ;
 524     }
 525     if ( m_hMaskBitmap )
 526     {
 527         DisposeGWorld( MAC_WXHBITMAP(m_hMaskBitmap) ) ;
 528         m_hMaskBitmap = NULL ;
 529     }
 530
 531     if (m_bitmapMask)
 532     {
 533         delete m_bitmapMask;
 534         m_bitmapMask = NULL;
 535     }
 536 }
 537
 538 wxBitmapRefData::~wxBitmapRefData()
 539 {
 540     Free() ;
 541 }
 542
 543 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 544 {
 545     int w = icon.GetWidth() ;
 546     int h = icon.GetHeight() ;
 547     Create( icon.GetWidth() , icon.GetHeight() ) ;
 548
 549     if ( w == h && ( w == 16 || w == 32 || w == 48 || w == 128 ) )
 550     {
 551         IconFamilyHandle iconFamily = NULL ;
 552         Handle imagehandle = NewHandle(0) ;
 553         Handle maskhandle = NewHandle(0) ;
 554
 555         OSType maskType = 0;
 556         OSType dataType = 0;
 557         IconSelectorValue selector = 0 ;
 558         if ( w == 128 )
 559         {
 560             dataType = kThumbnail32BitData ;
 561             maskType = kThumbnail8BitMask ;
 562             selector = kSelectorAllAvailableData ;
 563         }
 564         else if ( w == 48 )
 565         {
 566             dataType = kHuge32BitData ;
 567             maskType = kHuge8BitMask ;
 568             selector = kSelectorHuge32Bit | kSelectorHuge8BitMask ;
 569         }
 570         else if ( w == 32 )
 571         {
 572             dataType = kLarge32BitData ;
 573             maskType = kLarge8BitMask ;
 574             selector = kSelectorLarge32Bit | kSelectorLarge8BitMask ;
 575         }
 576         else if ( w == 16 )
 577         {
 578             dataType = kSmall32BitData ;
 579             maskType = kSmall8BitMask ;
 580             selector = kSelectorSmall32Bit | kSelectorSmall8BitMask ;
 581         }
 582         else
 583         {
 584             wxFAIL_MSG(wxT("Illegal icon size for conversion") ) ;
 585         }
 586
 587
 588         OSStatus err = ( IconRefToIconFamily( MAC_WXHICON(icon.GetHICON()) , selector , &iconFamily ) ) ;
 589
 590         err =( GetIconFamilyData( iconFamily , dataType , imagehandle ) ) ;
 591         err =( GetIconFamilyData( iconFamily , maskType , maskhandle ) ) ;
 592         wxASSERT( GetHandleSize( imagehandle ) == w * 4 * h ) ;
 593         wxASSERT( GetHandleSize( maskhandle ) == w * h ) ;
 594         UseAlpha() ;
 595         unsigned char *source = (unsigned char *) *imagehandle ;
 596         unsigned char *sourcemask = (unsigned char *) *maskhandle ;
 597
 598         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 599         for ( int y = 0 ; y < h ; ++y )
 600         {
 601             for ( int x = 0 ; x < w ; ++x )
 602             {
 603                 *destination++ = *sourcemask++ ;
 604                 source++ ;
 605                 *destination++ = *source++ ;
 606                 *destination++ = *source++ ;
 607                 *destination++ = *source++ ;
 608             }
 609         }
 610         EndRawAccess() ;
 611         DisposeHandle( imagehandle ) ;
 612         DisposeHandle( maskhandle ) ;
 613     }
 614     else
 615     {
 616         wxMemoryDC dc ;
 617         dc.SelectObject( *this ) ;
 618         dc.DrawIcon( icon , 0 , 0 ) ;
 619         dc.SelectObject( wxNullBitmap ) ;
 620     }
 621     return true;
 622 }
 623
 624 wxBitmap::wxBitmap()
 625 {
 626 }
 627
 628 wxBitmap::~wxBitmap()
 629 {
 630 }
 631
 632 wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits)
 633 {
 634     m_refData = new wxBitmapRefData( the_width , the_height , no_bits ) ;
 635
 636     if ( no_bits == 1 )
 637     {
 638         int linesize = ( the_width / (sizeof(unsigned char) * 8)) ;
 639         if ( the_width % (sizeof(unsigned char) * 8) ) {
 640             linesize += sizeof(unsigned char);
 641         }
 642         unsigned char* linestart = (unsigned char*) bits ;
 643         unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 644         for ( int y = 0 ; y < the_height ; ++y , linestart += linesize )
 645         {
 646             for ( int x = 0 ; x < the_width ; ++x )
 647             {
 648                 int index = x / 8 ;
 649                 int bit = x % 8 ;
 650                 int mask = 1 << bit ;
 651                 if ( linestart[index] & mask )
 652                 {
 653                     *destination++ = 0xFF ;
 654                     *destination++ = 0 ;
 655                     *destination++ = 0 ;
 656                     *destination++ = 0 ;
 657                 }
 658                 else
 659                 {
 660                     *destination++ = 0xFF ;
 661                     *destination++ = 0xFF ;
 662                     *destination++ = 0xFF ;
 663                     *destination++ = 0xFF ;
 664                 }
 665             }
 666         }
 667         EndRawAccess() ;
 668     }
 669     else
 670     {
 671         wxFAIL_MSG(wxT("multicolor BITMAPs not yet implemented"));
 672     }
 673 }
 674
 675 wxBitmap::wxBitmap(int w, int h, int d)
 676 {
 677     (void)Create(w, h, d);
 678 }
 679
 680 wxBitmap::wxBitmap(void *data, wxBitmapType type, int width, int height, int depth)
 681 {
 682     (void) Create(data, type, width, height, depth);
 683 }
 684
 685 wxBitmap::wxBitmap(const wxString& filename, wxBitmapType type)
 686 {
 687     LoadFile(filename, type);
 688 }
 689
 690 wxBitmap::wxBitmap(const char **bits)
 691 {
 692     (void) CreateFromXpm(bits);
 693 }
 694
 695 wxBitmap::wxBitmap(char **bits)
 696 {
 697     (void) CreateFromXpm((const char **)bits);
 698 }
 699
 700 void* wxBitmap::GetRawAccess() const
 701 {
 702     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 703     return M_BITMAPDATA->GetRawAccess() ;
 704 }
 705
 706 void* wxBitmap::BeginRawAccess()
 707 {
 708     wxCHECK_MSG( Ok() , NULL , wxT("invalid bitmap") ) ;
 709     return M_BITMAPDATA->BeginRawAccess() ;
 710 }
 711
 712 void wxBitmap::EndRawAccess()
 713 {
 714     wxCHECK_RET( Ok() , wxT("invalid bitmap") ) ;
 715     M_BITMAPDATA->EndRawAccess() ;
 716 }
 717
 718 bool wxBitmap::CreateFromXpm(const char **bits)
 719 {
 720     wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
 721     wxXPMDecoder decoder;
 722     wxImage img = decoder.ReadData(bits);
 723     wxCHECK_MSG( img.Ok(), FALSE, wxT("invalid bitmap data") )
 724     *this = wxBitmap(img);
 725     return TRUE;
 726 }
 727
 728 #if wxMAC_USE_CORE_GRAPHICS
 729 WXCGIMAGEREF wxBitmap::CGImageCreate() const
 730 {
 731     wxCHECK_MSG( Ok(), NULL , wxT("invalid bitmap") ) ;
 732     return M_BITMAPDATA->CGImageCreate() ;
 733 }
 734 #endif
 735
 736 wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
 737 {
 738     wxCHECK_MSG( Ok() &&
 739                 (rect.x >= 0) && (rect.y >= 0) &&
 740                 (rect.x+rect.width <= GetWidth()) &&
 741                 (rect.y+rect.height <= GetHeight()),
 742                 wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 743
 744
 745     wxBitmap ret( rect.width, rect.height, GetDepth() );
 746     wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
 747
 748
 749     int sourcewidth = GetWidth() ;
 750     int destwidth = rect.width ;
 751     int destheight = rect.height ;
 752     {
 753         unsigned char * sourcedata = (unsigned char*) GetRawAccess() ;
 754         unsigned char * destdata = (unsigned char*) ret.BeginRawAccess() ;
 755         int sourcelinesize = sourcewidth * 4 ;
 756         int destlinesize = destwidth * 4 ;
 757         unsigned char *source = sourcedata + rect.x * 4 + rect.y * sourcelinesize ;
 758         unsigned char *dest = destdata ;
 759         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 760         {
 761             memcpy( dest , source , destlinesize ) ;
 762         }
 763     }
 764     ret.EndRawAccess() ;
 765
 766     if ( M_BITMAPDATA->m_bitmapMask )
 767     {
 768         wxMemoryBuffer maskbuf ;
 769         int rowBytes = ( destwidth + 3 ) & 0xFFFFFFC ;
 770         size_t maskbufsize = rowBytes * destheight ;
 771         unsigned char * destdata = (unsigned char * ) maskbuf.GetWriteBuf( maskbufsize ) ;
 772
 773         int sourcelinesize = M_BITMAPDATA->m_bitmapMask->GetBytesPerRow()  ;
 774         int destlinesize = rowBytes ;
 775         unsigned char *source = (unsigned char *) M_BITMAPDATA->m_bitmapMask->GetRawAccess() ;
 776         source += rect.x + rect.y * sourcelinesize ;
 777         unsigned char *dest = destdata ;
 778
 779         for(int yy = 0; yy < destheight; ++yy, source += sourcelinesize , dest += destlinesize)
 780         {
 781             memcpy( dest , source , destlinesize ) ;
 782         }
 783         maskbuf.UngetWriteBuf( maskbufsize ) ;
 784         ret.SetMask( new wxMask( maskbuf , destwidth , destheight , rowBytes ) ) ;
 785     }
 786     else if ( HasAlpha() )
 787         ret.UseAlpha() ;
 788
 789     return ret;
 790 }
 791
 792 bool wxBitmap::Create(int w, int h, int d)
 793 {
 794     UnRef();
 795
 796     if ( d < 0 )
 797         d = wxDisplayDepth() ;
 798
 799     m_refData = new wxBitmapRefData( w , h , d );
 800
 801     return M_BITMAPDATA->Ok() ;
 802 }
 803
 804 bool wxBitmap::LoadFile(const wxString& filename, wxBitmapType type)
 805 {
 806     UnRef();
 807
 808     wxBitmapHandler *handler = FindHandler(type);
 809
 810     if ( handler )
 811     {
 812         m_refData = new wxBitmapRefData;
 813
 814         return handler->LoadFile(this, filename, type, -1, -1);
 815     }
 816     else
 817     {
 818         wxImage loadimage(filename, type);
 819         if (loadimage.Ok()) {
 820             *this = loadimage;
 821             return true;
 822         }
 823     }
 824     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 825     return false;
 826 }
 827
 828 bool wxBitmap::Create(void *data, wxBitmapType type, int width, int height, int depth)
 829 {
 830     UnRef();
 831
 832     m_refData = new wxBitmapRefData;
 833
 834     wxBitmapHandler *handler = FindHandler(type);
 835
 836     if ( handler == NULL ) {
 837         wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
 838
 839         return FALSE;
 840     }
 841
 842     return handler->Create(this, data, type, width, height, depth);
 843 }
 844
 845 wxBitmap::wxBitmap(const wxImage& image, int depth)
 846 {
 847     wxCHECK_RET( image.Ok(), wxT("invalid image") )
 848
 849     // width and height of the device-dependent bitmap
 850     int width = image.GetWidth();
 851     int height = image.GetHeight();
 852
 853     m_refData = new wxBitmapRefData( width , height , depth ) ;;
 854
 855     // Create picture
 856
 857     bool hasAlpha = false ;
 858
 859     if ( image.HasMask() )
 860     {
 861         // takes precedence, don't mix with alpha info
 862     }
 863     else
 864     {
 865         hasAlpha = image.HasAlpha() ;
 866     }
 867
 868     if ( hasAlpha )
 869         UseAlpha() ;
 870
 871     unsigned char* destination = (unsigned char*) BeginRawAccess() ;
 872
 873     register unsigned char* data = image.GetData();
 874     const unsigned char *alpha = hasAlpha ? image.GetAlpha() : NULL ;
 875     for (int y = 0; y < height; y++)
 876     {
 877         for (int x = 0; x < width; x++)
 878         {
 879             if ( hasAlpha )
 880             {
 881                 const unsigned char a = *alpha++;
 882                 *destination++ = a ;
 883 #if wxMAC_USE_PREMULTIPLIED_ALPHA
 884                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 885                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 886                 *destination++ = ((*data++) * a + 127 ) / 255 ;
 887 #else
 888                 *destination++ = *data++ ;
 889                 *destination++ = *data++ ;
 890                 *destination++ = *data++ ;
 891 #endif
 892             }
 893             else
 894             {
 895                 *destination++ = 0xFF ;
 896                 *destination++ = *data++ ;
 897                 *destination++ = *data++ ;
 898                 *destination++ = *data++ ;
 899             }
 900         }
 901     }
 902     EndRawAccess() ;
 903     if ( image.HasMask() )
 904     {
 905         SetMask( new wxMask( *this , wxColour( image.GetMaskRed() , image.GetMaskGreen() , image.GetMaskBlue() ) ) ) ;
 906     }
 907 }
 908
 909 wxImage wxBitmap::ConvertToImage() const
 910 {
 911     wxImage image;
 912
 913     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 914
 915     // create an wxImage object
 916     int width = GetWidth();
 917     int height = GetHeight();
 918     image.Create( width, height );
 919
 920     unsigned char *data = image.GetData();
 921     wxCHECK_MSG( data, wxNullImage, wxT("Could not allocate data for image") );
 922
 923     unsigned char* source = (unsigned char*) GetRawAccess() ;
 924
 925     bool hasAlpha = false ;
 926     bool hasMask = false ;
 927     unsigned char *alpha = NULL ;
 928     unsigned char *mask = NULL ;
 929     if ( HasAlpha() )
 930     {
 931         hasAlpha = true ;
 932     }
 933
 934     if ( GetMask() )
 935     {
 936         hasMask = true ;
 937         mask = (unsigned char*) GetMask()->GetRawAccess() ;
 938     }
 939
 940     if ( hasAlpha )
 941     {
 942         image.SetAlpha() ;
 943         alpha = image.GetAlpha() ;
 944     }
 945     int index = 0;
 946
 947     // The following masking algorithm is the same as well in msw/gtk:
 948     // the colour used as transparent one in wxImage and the one it is
 949     // replaced with when it really occurs in the bitmap
 950     static const int MASK_RED = 1;
 951     static const int MASK_GREEN = 2;
 952     static const int MASK_BLUE = 3;
 953     static const int MASK_BLUE_REPLACEMENT = 2;
 954
 955     for (int yy = 0; yy < height; yy++)
 956     {
 957         for (int xx = 0; xx < width; xx++)
 958         {
 959             long color = *((long*) source) ;
 960             unsigned char a = ((color&0xFF000000) >> 24) ;
 961             unsigned char r = ((color&0x00FF0000) >> 16) ;
 962             unsigned char g = ((color&0x0000FF00) >> 8) ;
 963             unsigned char b = (color&0x000000FF);
 964             if ( hasMask )
 965             {
 966                 if ( *mask++ == 0 )
 967                 {
 968                     if ( r == MASK_RED && g == MASK_GREEN && b == MASK_BLUE )
 969                         b = MASK_BLUE_REPLACEMENT ;
 970                 }
 971                 else
 972                 {
 973                     r = MASK_RED ;
 974                     g = MASK_GREEN ;
 975                     b = MASK_BLUE ;
 976                 }
 977             }
 978             else if ( hasAlpha )
 979                 *alpha++ = a ;
 980
 981             data[index    ] = r ;
 982             data[index + 1] = g ;
 983             data[index + 2] = b ;
 984             index += 3;
 985             source += 4 ;
 986         }
 987     }
 988     if ( hasMask )
 989         image.SetMaskColour( MASK_RED, MASK_GREEN, MASK_BLUE );
 990     return image;
 991 }
 992
 993
 994 bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type,
 995                         const wxPalette *palette) const
 996 {
 997     wxBitmapHandler *handler = FindHandler(type);
 998
 999     if ( handler )
1000     {
1001         return handler->SaveFile(this, filename, type, palette);
1002     }
1003     else
1004     {
1005         wxImage image = ConvertToImage();
1006
1007         return image.SaveFile(filename, type);
1008     }
1009
1010     wxLogWarning(wxT("no bitmap handler for type %d defined."), type);
1011     return false;
1012 }
1013
1014 bool wxBitmap::Ok() const
1015 {
1016    return (M_BITMAPDATA && M_BITMAPDATA->Ok());
1017 }
1018
1019 int wxBitmap::GetHeight() const
1020 {
1021    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1022
1023    return M_BITMAPDATA->GetHeight();
1024 }
1025
1026 int wxBitmap::GetWidth() const
1027 {
1028    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1029
1030    return M_BITMAPDATA->GetWidth() ;
1031 }
1032
1033 int wxBitmap::GetDepth() const
1034 {
1035    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
1036
1037    return M_BITMAPDATA->GetDepth();
1038 }
1039
1040 #if WXWIN_COMPATIBILITY_2_4
1041
1042 int wxBitmap::GetQuality() const
1043 {
1044     return 0;
1045 }
1046
1047 #endif
1048
1049 wxMask *wxBitmap::GetMask() const
1050 {
1051    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
1052
1053    return M_BITMAPDATA->m_bitmapMask;
1054 }
1055
1056 bool wxBitmap::HasAlpha() const
1057 {
1058    wxCHECK_MSG( Ok(), false , wxT("invalid bitmap") );
1059
1060    return M_BITMAPDATA->HasAlpha() ;
1061 }
1062
1063 void wxBitmap::SetWidth(int w)
1064 {
1065     if (!M_BITMAPDATA)
1066         m_refData = new wxBitmapRefData;
1067
1068     M_BITMAPDATA->SetWidth(w);
1069 }
1070
1071 void wxBitmap::SetHeight(int h)
1072 {
1073     if (!M_BITMAPDATA)
1074         m_refData = new wxBitmapRefData;
1075
1076     M_BITMAPDATA->SetHeight(h);
1077 }
1078
1079 void wxBitmap::SetDepth(int d)
1080 {
1081     if (!M_BITMAPDATA)
1082         m_refData = new wxBitmapRefData;
1083
1084     M_BITMAPDATA->SetDepth(d);
1085 }
1086
1087 #if WXWIN_COMPATIBILITY_2_4
1088
1089 void wxBitmap::SetQuality(int WXUNUSED(quality))
1090 {
1091 }
1092
1093 #endif
1094
1095 void wxBitmap::SetOk(bool isOk)
1096 {
1097     if (!M_BITMAPDATA)
1098         m_refData = new wxBitmapRefData;
1099
1100     M_BITMAPDATA->SetOk(isOk);
1101 }
1102
1103 #if wxUSE_PALETTE
1104 wxPalette *wxBitmap::GetPalette() const
1105 {
1106    wxCHECK_MSG( Ok(), NULL, wxT("Invalid bitmap  GetPalette()") );
1107
1108    return &M_BITMAPDATA->m_bitmapPalette;
1109 }
1110
1111 void wxBitmap::SetPalette(const wxPalette& palette)
1112 {
1113     if (!M_BITMAPDATA)
1114         m_refData = new wxBitmapRefData;
1115
1116     M_BITMAPDATA->m_bitmapPalette = palette ;
1117 }
1118 #endif // wxUSE_PALETTE
1119
1120 void wxBitmap::SetMask(wxMask *mask)
1121 {
1122     if (!M_BITMAPDATA)
1123         m_refData = new wxBitmapRefData;
1124
1125     // Remove existing mask if there is one.
1126     delete M_BITMAPDATA->m_bitmapMask;
1127
1128     M_BITMAPDATA->m_bitmapMask = mask ;
1129 }
1130
1131 WXHBITMAP wxBitmap::GetHBITMAP(WXHBITMAP* mask) const
1132 {
1133     return WXHBITMAP(M_BITMAPDATA->GetHBITMAP((GWorldPtr*)mask));
1134 }
1135
1136 // ----------------------------------------------------------------------------
1137 // wxMask
1138 // ----------------------------------------------------------------------------
1139
1140 wxMask::wxMask()
1141 {
1142     Init() ;
1143 }
1144
1145 // Construct a mask from a bitmap and a colour indicating
1146 // the transparent area
1147 wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
1148 {
1149     Init() ;
1150     Create(bitmap, colour);
1151 }
1152
1153 // Construct a mask from a mono bitmap (copies the bitmap).
1154 wxMask::wxMask(const wxBitmap& bitmap)
1155 {
1156     Init() ;
1157     Create(bitmap);
1158 }
1159
1160 // Construct a mask from a mono bitmap (copies the bitmap).
1161 wxMask::wxMask(const wxMemoryBuffer& data, int width , int height , int bytesPerRow )
1162 {
1163     Init() ;
1164     Create(data, width , height , bytesPerRow );
1165 }
1166
1167 wxMask::~wxMask()
1168 {
1169     if ( m_maskBitmap )
1170     {
1171         DisposeGWorld( (GWorldPtr) m_maskBitmap ) ;
1172         m_maskBitmap = NULL ;
1173     }
1174 }
1175
1176 void wxMask::Init()
1177 {
1178     m_width = m_height = m_bytesPerRow = 0 ;
1179     m_maskBitmap = NULL ;
1180 }
1181
1182 void *wxMask::GetRawAccess() const
1183 {
1184     return m_memBuf.GetData() ;
1185 }
1186
1187 void wxMask::RealizeNative()
1188 {
1189     if ( m_maskBitmap )
1190     {
1191        DisposeGWorld(  (GWorldPtr) m_maskBitmap ) ;
1192        m_maskBitmap = NULL ;
1193     }
1194     Rect rect = { 0 , 0 , m_height , m_width } ;
1195     verify_noerr( NewGWorldFromPtr( (GWorldPtr*) &m_maskBitmap , k8IndexedGrayPixelFormat , &rect , NULL , NULL , 0 ,
1196         (char*) m_memBuf.GetData() , m_bytesPerRow ) ) ;
1197 }
1198
1199 // Create a mask from a mono bitmap (copies the bitmap).
1200 bool wxMask::Create(const wxMemoryBuffer& data,int width , int height , int bytesPerRow)
1201 {
1202     m_memBuf = data ;
1203     m_width = width ;
1204     m_height = height ;
1205     m_bytesPerRow = bytesPerRow ;
1206     wxASSERT( data.GetDataLen() == (size_t)(height * bytesPerRow) ) ;
1207     RealizeNative() ;
1208     return true ;
1209 }
1210
1211 // Create a mask from a mono bitmap (copies the bitmap).
1212 bool wxMask::Create(const wxBitmap& bitmap)
1213 {
1214     m_width = bitmap.GetWidth() ;
1215     m_height = bitmap.GetHeight() ;
1216     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1217     size_t size = m_bytesPerRow * m_height ;
1218     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1219     memset( destdatabase , 0 , size ) ;
1220     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1221     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow )
1222     {
1223         unsigned char *destdata= destdatabase ;
1224         for( int x = 0 ; x < m_width ; ++x )
1225         {
1226             srcdata++ ;
1227             unsigned char r = *srcdata++ ;
1228             unsigned char g = *srcdata++ ;
1229             unsigned char b = *srcdata++ ;
1230             if ( ( r + g + b ) > 0x10 )
1231                 *destdata++ = 0x00 ;
1232             else
1233                 *destdata++ = 0xFF ;
1234         }
1235     }
1236     m_memBuf.UngetWriteBuf( size ) ;
1237     RealizeNative() ;
1238     return TRUE;
1239 }
1240
1241 // Create a mask from a bitmap and a colour indicating
1242 // the transparent area
1243 bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
1244 {
1245     m_width = bitmap.GetWidth() ;
1246     m_height = bitmap.GetHeight() ;
1247     m_bytesPerRow = ( m_width + 3 ) & 0xFFFFFFC ;
1248     size_t size = m_bytesPerRow * m_height ;
1249
1250     unsigned char * destdatabase = (unsigned char*) m_memBuf.GetWriteBuf( size ) ;
1251     memset( destdatabase , 0 , size ) ;
1252     unsigned char * srcdata = (unsigned char*) bitmap.GetRawAccess() ;
1253     for ( int y = 0 ; y < m_height ; ++y , destdatabase += m_bytesPerRow)
1254     {
1255         unsigned char *destdata= destdatabase ;
1256         for( int x = 0 ; x < m_width ; ++x )
1257         {
1258             srcdata++ ;
1259             unsigned char r = *srcdata++ ;
1260             unsigned char g = *srcdata++ ;
1261             unsigned char b = *srcdata++ ;
1262             if ( colour == wxColour( r , g , b) )
1263                 *destdata++ = 0x00 ;
1264             else
1265                 *destdata++ = 0xFF ;
1266         }
1267     }
1268     m_memBuf.UngetWriteBuf( size ) ;
1269     RealizeNative() ;
1270     return TRUE;
1271 }
1272
1273 WXHBITMAP wxMask::GetHBITMAP() const
1274 {
1275     return m_maskBitmap ;
1276 }
1277
1278 // ----------------------------------------------------------------------------
1279 // wxBitmapHandler
1280 // ----------------------------------------------------------------------------
1281
1282 wxBitmapHandler::~wxBitmapHandler()
1283 {
1284 }
1285
1286 bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, long type, int width, int height, int depth)
1287 {
1288     return FALSE;
1289 }
1290
1291 bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1292         int desiredWidth, int desiredHeight)
1293 {
1294     return FALSE;
1295 }
1296
1297 bool wxBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
1298 {
1299     return FALSE;
1300 }
1301
1302 // ----------------------------------------------------------------------------
1303 // Standard Handlers
1304 // ----------------------------------------------------------------------------
1305
1306 class WXDLLEXPORT wxPICTResourceHandler: public wxBitmapHandler
1307 {
1308     DECLARE_DYNAMIC_CLASS(wxPICTResourceHandler)
1309 public:
1310     inline wxPICTResourceHandler()
1311     {
1312         SetName(wxT("Macintosh Pict resource"));
1313         SetExtension(wxEmptyString);
1314         SetType(wxBITMAP_TYPE_PICT_RESOURCE);
1315     };
1316
1317     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1318           int desiredWidth, int desiredHeight);
1319 };
1320 IMPLEMENT_DYNAMIC_CLASS(wxPICTResourceHandler, wxBitmapHandler)
1321
1322
1323 bool  wxPICTResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
1324           int desiredWidth, int desiredHeight)
1325 {
1326 #if wxUSE_METAFILE
1327     Str255 theName ;
1328     wxMacStringToPascal( name , theName ) ;
1329
1330     PicHandle thePict = (PicHandle ) GetNamedResource( 'PICT' , theName ) ;
1331     if ( thePict )
1332     {
1333         wxMetafile mf ;
1334         mf.SetHMETAFILE((WXHMETAFILE) thePict ) ;
1335         bitmap->Create( mf.GetWidth() , mf.GetHeight() ) ;
1336         wxMemoryDC dc ;
1337         dc.SelectObject( *bitmap ) ;
1338         mf.Play( &dc ) ;
1339         dc.SelectObject( wxNullBitmap ) ;
1340         return TRUE ;
1341     }
1342 #endif //wxUSE_METAFILE
1343     return FALSE ;
1344 }
1345
1346
1347 void wxBitmap::InitStandardHandlers()
1348 {
1349     AddHandler(new wxPICTResourceHandler) ;
1350     AddHandler(new wxICONResourceHandler) ;
1351 }
1352
1353 // ----------------------------------------------------------------------------
1354 // raw bitmap access support
1355 // ----------------------------------------------------------------------------
1356
1357 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
1358 {
1359     if ( !Ok() )
1360     {
1361         // no bitmap, no data (raw or otherwise)
1362         return NULL;
1363     }
1364
1365     data.m_width = GetWidth() ;
1366     data.m_height = GetHeight() ;
1367     data.m_stride = GetWidth() * 4 ;
1368     return GetRawAccess() ;
1369 }
1370
1371 void wxBitmap::UngetRawData(wxPixelDataBase& dataBase)
1372 {
1373     if ( !Ok() )
1374         return;
1375
1376     // TODO : if we have some information about the API we should check
1377     // this code looks strange...
1378
1379     if ( M_BITMAPDATA->HasAlpha() )
1380     {
1381         wxAlphaPixelData& data = (wxAlphaPixelData&)dataBase;
1382
1383         int w = data.GetWidth(),
1384             h = data.GetHeight();
1385
1386         wxBitmap bmpMask(GetWidth(), GetHeight(), 32);
1387         wxAlphaPixelData dataMask(bmpMask, data.GetOrigin(), wxSize(w, h));
1388         wxAlphaPixelData::Iterator pMask(dataMask),
1389                                    p(data);
1390         for ( int y = 0; y < h; y++ )
1391         {
1392             wxAlphaPixelData::Iterator rowStartMask = pMask,
1393                                        rowStart = p;
1394
1395             for ( int x = 0; x < w; x++ )
1396             {
1397                 const wxAlphaPixelData::Iterator::ChannelType
1398                     alpha = p.Alpha();
1399
1400                 pMask.Red() = alpha;
1401                 pMask.Green() = alpha;
1402                 pMask.Blue() = alpha;
1403
1404                 ++p;
1405                 ++pMask;
1406             }
1407
1408             p = rowStart;
1409             p.OffsetY(data, 1);
1410
1411             pMask = rowStartMask;
1412             pMask.OffsetY(dataMask, 1);
1413         }
1414
1415         SetMask(new wxMask(bmpMask));
1416     }
1417 }
1418
1419 void wxBitmap::UseAlpha()
1420 {
1421     // remember that we are using alpha channel, we'll need to create a proper
1422     // mask in UngetRawData()
1423     M_BITMAPDATA->UseAlpha( true );
1424 }