src/dfb/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/dfb/bitmap.cpp
   3 // Purpose:     wxBitmap implementation
   4 // Author:      Vaclav Slavik
   5 // Created:     2006-08-04
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2006 REA Elektronik GmbH
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/app.h"
  20     #include "wx/log.h"
  21 #endif
  22
  23 #include "wx/bitmap.h"
  24 #include "wx/colour.h"
  25 #include "wx/image.h"
  26 #include "wx/rawbmp.h"
  27
  28 #include "wx/dfb/private.h"
  29
  30 //-----------------------------------------------------------------------------
  31 // helpers for translating between wx and DFB pixel formats
  32 //-----------------------------------------------------------------------------
  33
  34 namespace
  35 {
  36
  37 // NB: Most of this conversion code is needed because of differences between
  38 //     wxImage and wxDFB's wxBitmap representations:
  39 //     (1) wxImage uses RGB order, while DirectFB uses BGR
  40 //     (2) wxImage has alpha channel in a separate plane, while DirectFB puts
  41 //         all components into single BGRA plane
  42
  43 // pitch = stride = # of bytes between the start of N-th line and (N+1)-th line
  44 // {Src,Dst}PixSize = # of bytes used to represent one pixel
  45 template<int SrcPixSize, int DstPixSize>
  46 void CopyPixelsAndSwapRGB(unsigned w, unsigned h,
  47                           const unsigned char *src,
  48                           unsigned src_pitch,
  49                           unsigned char *dst,
  50                           unsigned dst_pitch)
  51 {
  52     unsigned src_advance = src_pitch - SrcPixSize * w;
  53     unsigned dst_advance = dst_pitch - DstPixSize * w;
  54     for ( unsigned y = 0; y < h; y++, src += src_advance, dst += dst_advance )
  55     {
  56         for ( unsigned x = 0; x < w; x++, src += SrcPixSize, dst += DstPixSize )
  57         {
  58             // copy with RGB -> BGR translation:
  59             dst[0] = src[2];
  60             dst[1] = src[1];
  61             dst[2] = src[0];
  62         }
  63     }
  64 }
  65
  66 void CopySurfaceToImage(const wxIDirectFBSurfacePtr& surface, wxImage& image)
  67 {
  68     wxIDirectFBSurface::Locked locked(surface, DSLF_READ);
  69     wxCHECK_RET( locked.ptr, "failed to lock surface" );
  70
  71     const unsigned width = image.GetWidth();
  72     const unsigned height = image.GetHeight();
  73     const DFBSurfacePixelFormat format = surface->GetPixelFormat();
  74
  75     // copy RGB data from the surface:
  76     switch ( format )
  77     {
  78         case DSPF_RGB24:
  79             CopyPixelsAndSwapRGB<3,3>
  80             (
  81                 width, height,
  82                 (unsigned char*)locked.ptr, locked.pitch,
  83                 image.GetData(), width * 3
  84             );
  85             break;
  86
  87         case DSPF_RGB32:
  88         case DSPF_ARGB:
  89             CopyPixelsAndSwapRGB<4,3>
  90             (
  91                 width, height,
  92                 (unsigned char*)locked.ptr, locked.pitch,
  93                 image.GetData(), width * 3
  94             );
  95             break;
  96
  97         default:
  98             wxFAIL_MSG( "unexpected pixel format" );
  99             return;
 100     }
 101
 102     // extract alpha channel if the bitmap has it:
 103     if ( format == DSPF_ARGB )
 104     {
 105         // create alpha plane:
 106         image.SetAlpha();
 107
 108         // and copy alpha data to it:
 109         const unsigned advance = locked.pitch - 4 * width;
 110         unsigned char *alpha = image.GetAlpha();
 111         // NB: "+3" is to get pointer to alpha component
 112         const unsigned char *src = ((unsigned char*)locked.ptr) + 3;
 113
 114         for ( unsigned y = 0; y < height; y++, src += advance )
 115             for ( unsigned x = 0; x < width; x++, src += 4 )
 116                 *(alpha++) = *src;
 117     }
 118 }
 119
 120 void CopyImageToSurface(const wxImage& image,
 121                         const wxIDirectFBSurfacePtr& surface)
 122 {
 123     wxIDirectFBSurface::Locked locked(surface, DSLF_WRITE);
 124     wxCHECK_RET( locked.ptr, "failed to lock surface" );
 125
 126     const unsigned width = image.GetWidth();
 127     const unsigned height = image.GetHeight();
 128     const DFBSurfacePixelFormat format = surface->GetPixelFormat();
 129
 130     // copy RGB data to the surface:
 131     switch ( format )
 132     {
 133         case DSPF_RGB24:
 134             CopyPixelsAndSwapRGB<3,3>
 135             (
 136                width, height,
 137                image.GetData(), width * 3,
 138                (unsigned char*)locked.ptr, locked.pitch
 139             );
 140             break;
 141
 142         case DSPF_RGB32:
 143         case DSPF_ARGB:
 144             CopyPixelsAndSwapRGB<3,4>
 145             (
 146                width, height,
 147                image.GetData(), width * 3,
 148                (unsigned char*)locked.ptr, locked.pitch
 149             );
 150             break;
 151
 152         default:
 153             wxFAIL_MSG( "unexpected pixel format" );
 154             return;
 155     }
 156
 157     // if the image has alpha channel, merge it in:
 158     if ( format == DSPF_ARGB )
 159     {
 160         wxCHECK_RET( image.HasAlpha(), "logic error - ARGB, but no alpha" );
 161
 162         const unsigned advance = locked.pitch - 4 * width;
 163         const unsigned char *alpha = image.GetAlpha();
 164         // NB: "+3" is to get pointer to alpha component
 165         unsigned char *dest = ((unsigned char*)locked.ptr) + 3;
 166
 167         for ( unsigned y = 0; y < height; y++, dest += advance )
 168             for ( unsigned x = 0; x < width; x++, dest += 4 )
 169                 *dest = *(alpha++);
 170     }
 171 }
 172
 173 wxIDirectFBSurfacePtr
 174 CreateSurfaceWithFormat(int w, int h, DFBSurfacePixelFormat format)
 175 {
 176     DFBSurfaceDescription desc;
 177     desc.flags = (DFBSurfaceDescriptionFlags)
 178         (DSDESC_CAPS | DSDESC_WIDTH | DSDESC_HEIGHT);
 179     desc.caps = DSCAPS_NONE;
 180     desc.width = w;
 181     desc.height = h;
 182
 183     if ( format != DSPF_UNKNOWN )
 184     {
 185         desc.flags = (DFBSurfaceDescriptionFlags)(
 186                             desc.flags | DSDESC_PIXELFORMAT);
 187         desc.pixelformat = format;
 188     }
 189
 190     return wxIDirectFB::Get()->CreateSurface(&desc);
 191 }
 192
 193 // Creates a surface that will use wxImage's pixel data (RGB only)
 194 wxIDirectFBSurfacePtr CreateSurfaceForImage(const wxImage& image)
 195 {
 196     wxCHECK_MSG( image.Ok(), NULL, "invalid image" );
 197     // FIXME_DFB: implement alpha handling by merging alpha buffer with RGB
 198     //            into a temporary RGBA surface
 199     wxCHECK_MSG( !image.HasAlpha(), NULL, "alpha channel not supported" );
 200
 201     // NB: wxImage uses RGB order of bytes while DirectFB uses BGR, so we
 202     //     cannot use preallocated surface that shares data with wxImage, we
 203     //     have to copy the data to temporary surface instead
 204     return CreateSurfaceWithFormat(image.GetWidth(), image.GetHeight(),
 205                                    DSPF_RGB24);
 206 }
 207
 208 bool ConvertSurfaceToFormat(wxIDirectFBSurfacePtr& surface,
 209                             DFBSurfacePixelFormat format)
 210 {
 211     if ( surface->GetPixelFormat() == format )
 212         return true;
 213
 214     int w, h;
 215     surface->GetSize(&w, &h);
 216     wxIDirectFBSurfacePtr s = CreateSurfaceWithFormat(w, h, format);
 217     if ( !s )
 218         return false;
 219
 220     if ( !s->SetBlittingFlags(DSBLIT_NOFX) )
 221         return false;
 222     if ( !s->Blit(surface->GetRaw(), NULL, 0, 0) )
 223         return false;
 224
 225     surface = s;
 226     return true;
 227 }
 228
 229 DFBSurfacePixelFormat DepthToFormat(int depth)
 230 {
 231     switch ( depth )
 232     {
 233         case 24:
 234             return DSPF_RGB24;
 235         case 32:
 236             // NB: we treat depth=32 as requesting ARGB for consistency with
 237             //     other ports
 238             return DSPF_ARGB;
 239         default:
 240             wxFAIL_MSG( "unsupported depth requested" );
 241             // fall through
 242         case -1:
 243             return DSPF_UNKNOWN;
 244     }
 245 }
 246
 247 // ----------------------------------------------------------------------------
 248 // monochrome bitmap functions
 249 // ----------------------------------------------------------------------------
 250
 251 // this function works with destination buffer of type T and not char (where T
 252 // is typically wxUint32 for RGB32, wxUint16 for RGB16 &c) as we don't need
 253 // access to the individual pixel components -- and so it's not suitable for
 254 // the pixel formats with pixel size not equal to 8, 16 or 32
 255 template <typename T, int White, int Black>
 256 void
 257 CopyBits(int width,
 258          int height,
 259          const unsigned char *src,
 260          const wxIDirectFBSurface::Locked locked)
 261 {
 262     static const int BITS_PER_BYTE = 8;
 263
 264     // extra padding to add to dst at the end of each row: this works on the
 265     // assumption that all rows are aligned at multiples of T (and usually 4
 266     // bytes) boundary so check for it (and change the code if this assert is
 267     // ever triggered)
 268     wxASSERT_MSG( !(locked.pitch % sizeof(T)), "image rows not aligned?" );
 269     const int padDst = (locked.pitch - width*sizeof(T))/sizeof(T);
 270
 271     int x = 0; // position in the current bitmap row
 272
 273     // a single char in src corresponds to 8 destination pixels and the last
 274     // char in the row contains padding if necessary, i.e. there is always an
 275     // integer number of chars per row
 276     const unsigned char * const
 277         srcEnd = src + ((width + BITS_PER_BYTE - 1)/BITS_PER_BYTE)*height;
 278
 279     // we operate with sizeof(T), not 1, bytes at once
 280     T *dst = static_cast<T *>(locked.ptr);
 281     while ( src < srcEnd )
 282     {
 283         unsigned char val = *src++;
 284
 285         for ( int bit = 0; bit < BITS_PER_BYTE; bit++ )
 286         {
 287             *dst++ = val & 1 ? White : Black;
 288             val >>= 1;
 289             if ( ++x == width )
 290             {
 291                 dst += padDst;
 292                 x = 0;
 293                 break;
 294             }
 295         }
 296     }
 297 }
 298
 299 bool
 300 CopyBitsToSurface(const unsigned char *bits,
 301                   int width,
 302                   int height,
 303                   wxIDirectFBSurfacePtr& surface)
 304 {
 305     wxIDirectFBSurface::Locked locked(surface, DSLF_WRITE);
 306     wxCHECK_MSG( locked.ptr, false, "failed to lock surface" );
 307
 308     const DFBSurfacePixelFormat format = surface->GetPixelFormat();
 309
 310     switch ( format )
 311     {
 312         case DSPF_LUT8:
 313             // we suppose that these indices correspond to the palette entries
 314             // for white and black, respectively, but a better idea would be to
 315             // use IDirectFBPalette::FindBestMatch() to determine them
 316             CopyBits<wxUint8, 0xff, 0>(width, height, bits, locked);
 317             break;
 318
 319         case DSPF_RGB16:
 320             CopyBits<wxUint16, 0xffff, 0>(width, height, bits, locked);
 321             break;
 322
 323         case DSPF_RGB32:
 324             CopyBits<wxUint32, 0xffffffff, 0>(width, height, bits, locked);
 325             break;
 326
 327         default:
 328             // we don't really have time to implement efficient support for all
 329             // the other formats so simply (and awfully slowly, of course...)
 330             // convert everything else from RGB32
 331             surface = CreateSurfaceWithFormat(width, height, DSPF_RGB32);
 332             if ( !surface )
 333                 return false;
 334
 335             if ( !CopyBitsToSurface(bits, width, height, surface) )
 336                 return false;
 337
 338             if ( !ConvertSurfaceToFormat(surface, format) )
 339                 return false;
 340     }
 341
 342     return true;
 343 }
 344
 345 } // anonymous namespace
 346
 347 //-----------------------------------------------------------------------------
 348 // wxBitmapRefData
 349 //-----------------------------------------------------------------------------
 350
 351 class wxBitmapRefData: public wxGDIRefData
 352 {
 353 public:
 354     wxBitmapRefData()
 355     {
 356         m_mask = NULL;
 357 #if wxUSE_PALETTE
 358         m_palette = NULL;
 359 #endif
 360     }
 361
 362     wxBitmapRefData(const wxBitmapRefData& data)
 363     {
 364         m_surface = data.m_surface ? data.m_surface->Clone() : NULL;
 365
 366         m_mask = data.m_mask ? new wxMask(*data.m_mask) : NULL;
 367 #if wxUSE_PALETTE
 368         m_palette = data.m_palette ? new wxPalette(*data.m_palette) : NULL;
 369 #endif
 370     }
 371
 372     virtual ~wxBitmapRefData()
 373     {
 374         delete m_mask;
 375 #if wxUSE_PALETTE
 376         delete m_palette;
 377 #endif
 378     }
 379
 380     virtual bool IsOk() const { return m_surface; }
 381
 382     wxIDirectFBSurfacePtr m_surface;
 383     wxMask               *m_mask;
 384 #if wxUSE_PALETTE
 385     wxPalette            *m_palette;
 386 #endif
 387 };
 388
 389 #define M_BITMAP ((wxBitmapRefData *)m_refData)
 390
 391 //-----------------------------------------------------------------------------
 392 // wxBitmap
 393 //-----------------------------------------------------------------------------
 394
 395 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxBitmapBase)
 396
 397 bool wxBitmap::Create(const wxIDirectFBSurfacePtr& surface)
 398 {
 399     UnRef();
 400
 401     wxCHECK_MSG( surface, false, "invalid surface" );
 402
 403     m_refData = new wxBitmapRefData();
 404     M_BITMAP->m_surface = surface;
 405     return true;
 406 }
 407
 408 bool wxBitmap::Create(int width, int height, int depth)
 409 {
 410     return CreateWithFormat(width, height, DepthToFormat(depth));
 411 }
 412
 413 bool wxBitmap::CreateWithFormat(int width, int height, int dfbFormat)
 414 {
 415     UnRef();
 416
 417     wxCHECK_MSG( width > 0 && height > 0, false, wxT("invalid bitmap size") );
 418
 419     return Create(CreateSurfaceWithFormat(width, height,
 420                                           DFBSurfacePixelFormat(dfbFormat)));
 421 }
 422
 423 #if wxUSE_IMAGE
 424 wxBitmap::wxBitmap(const wxImage& imageOrig, int depth)
 425 {
 426     wxCHECK_RET( imageOrig.Ok(), wxT("invalid image") );
 427
 428     wxImage image(imageOrig);
 429
 430     // convert mask to alpha channel, because wxMask isn't implemented yet
 431     // FIXME: don't do this, implement proper wxMask support
 432     if ( image.HasMask() )
 433         image.InitAlpha();
 434
 435     DFBSurfacePixelFormat format = DepthToFormat(depth);
 436     if ( format == DSPF_UNKNOWN && image.HasAlpha() )
 437         format = DSPF_ARGB;
 438
 439     // create surface in screen's format (unless we need alpha channel,
 440     // in which case use ARGB):
 441     if ( !CreateWithFormat(image.GetWidth(), image.GetHeight(), format) )
 442         return;
 443
 444     // then copy the image to it:
 445     wxIDirectFBSurfacePtr dst = M_BITMAP->m_surface;
 446
 447     switch ( dst->GetPixelFormat() )
 448     {
 449         case DSPF_RGB24:
 450         case DSPF_RGB32:
 451         case DSPF_ARGB:
 452             CopyImageToSurface(image, dst);
 453             break;
 454
 455         default:
 456         {
 457             // wxBitmap uses different pixel format, so we have to use a
 458             // temporary surface and blit to the bitmap via it:
 459             wxIDirectFBSurfacePtr src(CreateSurfaceForImage(image));
 460             CopyImageToSurface(image, src);
 461
 462             if ( !dst->SetBlittingFlags(DSBLIT_NOFX) )
 463                 return;
 464             if ( !dst->Blit(src->GetRaw(), NULL, 0, 0) )
 465                 return;
 466         }
 467     }
 468 }
 469
 470 wxImage wxBitmap::ConvertToImage() const
 471 {
 472     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 473
 474     wxImage img(GetWidth(), GetHeight());
 475     wxIDirectFBSurfacePtr src = M_BITMAP->m_surface;
 476
 477     switch ( src->GetPixelFormat() )
 478     {
 479         case DSPF_RGB24:
 480         case DSPF_RGB32:
 481         case DSPF_ARGB:
 482             CopySurfaceToImage(src, img);
 483             break;
 484         default:
 485         {
 486             // wxBitmap uses different pixel format, so we have to use a
 487             // temporary surface and blit to the bitmap via it:
 488             wxIDirectFBSurfacePtr dst(CreateSurfaceForImage(img));
 489
 490             if ( !dst->SetBlittingFlags(DSBLIT_NOFX) )
 491                 return wxNullImage;
 492             if ( !dst->Blit(src->GetRaw(), NULL, 0, 0) )
 493                 return wxNullImage;
 494
 495             CopySurfaceToImage(dst, img);
 496         }
 497     }
 498
 499     // FIXME: implement mask setting in the image
 500     wxASSERT_MSG( GetMask() == NULL, "bitmap masks are ignored for now" );
 501
 502     return img;
 503 }
 504 #endif // wxUSE_IMAGE
 505
 506 void *wxBitmap::GetRawData(wxPixelDataBase& data, int bpp)
 507 {
 508     wxCHECK_MSG( Ok(), NULL, "invalid bitmap" );
 509
 510     AllocExclusive();
 511
 512     DFBSurfacePixelFormat format;
 513     if ( bpp == 32 )
 514         format = DSPF_ARGB;
 515     else
 516         format = DSPF_RGB24;
 517
 518     // convert the bitmap into format compatible with requested raw access;
 519     // note that we don't bother converting the bitmap back in UngetRawData(),
 520     // as unpacked formats (RGB24, RGB32) are the common case and converting
 521     // between them while blitting is fast enough (FIXME?)
 522     if ( !ConvertSurfaceToFormat(M_BITMAP->m_surface, format) )
 523         return NULL;
 524
 525     void *bits = NULL;
 526     if ( !M_BITMAP->m_surface->Lock
 527                                (
 528                                  (DFBSurfaceLockFlags)(DSLF_READ | DSLF_WRITE),
 529                                  &bits,
 530                                  &data.m_stride
 531                                ) )
 532         return NULL;
 533
 534     M_BITMAP->m_surface->GetSize(&data.m_width, &data.m_height);
 535
 536     return bits;
 537 }
 538
 539 void wxBitmap::UngetRawData(wxPixelDataBase& WXUNUSED(data))
 540 {
 541     M_BITMAP->m_surface->Unlock();
 542 }
 543
 544 bool wxBitmap::HasAlpha() const
 545 {
 546     wxCHECK_MSG( Ok(), false, "invalid bitmap" );
 547
 548     return M_BITMAP->m_surface->GetPixelFormat() == DSPF_ARGB;
 549 }
 550
 551 wxBitmap::wxBitmap(const wxString &filename, wxBitmapType type)
 552 {
 553     LoadFile(filename, type);
 554 }
 555
 556 wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)
 557 {
 558     wxCHECK_RET( depth == 1, wxT("can only create mono bitmap from XBM data") );
 559
 560     // create bitmap in the device-dependent format
 561     if ( !CreateWithFormat(width, height, DSPF_UNKNOWN) )
 562         return;
 563
 564     if ( !CopyBitsToSurface((const unsigned char *)bits,
 565                             width, height, M_BITMAP->m_surface) )
 566         UnRef();
 567 }
 568
 569 int wxBitmap::GetHeight() const
 570 {
 571     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 572
 573     int h = -1;
 574     M_BITMAP->m_surface->GetSize(NULL, &h);
 575     return h;
 576 }
 577
 578 int wxBitmap::GetWidth() const
 579 {
 580     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 581
 582     int w = -1;
 583     M_BITMAP->m_surface->GetSize(&w, NULL);
 584     return w;
 585 }
 586
 587 int wxBitmap::GetDepth() const
 588 {
 589     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 590
 591     return M_BITMAP->m_surface->GetDepth();
 592 }
 593
 594 wxMask *wxBitmap::GetMask() const
 595 {
 596     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 597
 598     return M_BITMAP->m_mask;
 599 }
 600
 601 void wxBitmap::SetMask(wxMask *mask)
 602 {
 603     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
 604
 605     AllocExclusive();
 606     delete M_BITMAP->m_mask;
 607     M_BITMAP->m_mask = mask;
 608 }
 609
 610 bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 611 {
 612     *this = *((wxBitmap*)(&icon));
 613     return true;
 614 }
 615
 616 wxBitmap wxBitmap::GetSubBitmap(const wxRect& rect) const
 617 {
 618     wxCHECK_MSG( Ok() &&
 619                  rect.x >= 0 && rect.y >= 0 &&
 620                  rect.x+rect.width <= GetWidth() &&
 621                  rect.y+rect.height <= GetHeight(),
 622                  wxNullBitmap,
 623                  wxT("invalid bitmap or bitmap region") );
 624
 625     // NB: DirectFB subsurfaces share the same pixels buffer, so we must
 626     //     clone the obtained subsurface
 627     DFBRectangle r = { rect.x, rect.y, rect.width, rect.height };
 628     return wxBitmap(M_BITMAP->m_surface->GetSubSurface(&r)->Clone());
 629 }
 630
 631 #warning "to common code"
 632 bool wxBitmap::LoadFile(const wxString &name, wxBitmapType type)
 633 {
 634     UnRef();
 635
 636     wxBitmapHandler *handler = FindHandler(type);
 637
 638     if ( handler == NULL )
 639     {
 640         wxImage image;
 641         if ( !image.LoadFile(name, type) || !image.Ok() )
 642         {
 643             wxLogError(_("No bitmap handler for type %d defined."), type);
 644             return false;
 645         }
 646         else
 647         {
 648             *this = wxBitmap(image);
 649             return true;
 650         }
 651     }
 652
 653     m_refData = new wxBitmapRefData();
 654
 655     return handler->LoadFile(this, name, type, -1, -1);
 656 }
 657
 658 #warning "to common code"
 659 bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type, const wxPalette *palette) const
 660 {
 661     wxCHECK_MSG( Ok(), false, wxT("invalid bitmap") );
 662
 663     wxBitmapHandler *handler = FindHandler(type);
 664
 665     if ( handler == NULL )
 666     {
 667         wxImage image = ConvertToImage();
 668 #if wxUSE_PALETTE
 669         if ( palette )
 670             image.SetPalette(*palette);
 671 #endif // wxUSE_PALETTE
 672
 673         if ( image.Ok() )
 674             return image.SaveFile(filename, type);
 675         else
 676         {
 677             wxLogError(_("No bitmap handler for type %d defined."), type);
 678             return false;
 679         }
 680     }
 681
 682     return handler->SaveFile(this, filename, type, palette);
 683 }
 684
 685 #if wxUSE_PALETTE
 686 wxPalette *wxBitmap::GetPalette() const
 687 {
 688     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 689
 690     return M_BITMAP->m_palette;
 691 }
 692
 693 void wxBitmap::SetPalette(const wxPalette& palette)
 694 {
 695     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
 696     wxCHECK_RET( GetDepth() > 1 && GetDepth() <= 8, wxT("cannot set palette for bitmap of this depth") );
 697
 698     AllocExclusive();
 699     wxDELETE(M_BITMAP->m_palette);
 700
 701     if ( !palette.Ok() ) return;
 702
 703     M_BITMAP->m_palette = new wxPalette(palette);
 704 }
 705 #endif // wxUSE_PALETTE
 706
 707 void wxBitmap::SetHeight(int height)
 708 {
 709     AllocExclusive();
 710
 711     wxFAIL_MSG( "SetHeight not implemented" );
 712 }
 713
 714 void wxBitmap::SetWidth(int width)
 715 {
 716     AllocExclusive();
 717
 718     wxFAIL_MSG( "SetWidth not implemented" );
 719 }
 720
 721 void wxBitmap::SetDepth(int depth)
 722 {
 723     DFBSurfacePixelFormat format = DepthToFormat(depth);
 724     if ( M_BITMAP->m_surface->GetPixelFormat() == format )
 725         return;
 726
 727     AllocExclusive();
 728
 729     int w, h;
 730     M_BITMAP->m_surface->GetSize(&w, &h);
 731     wxIDirectFBSurfacePtr s = CreateSurfaceWithFormat(w, h, format);
 732     if ( !s )
 733         return;
 734     if ( !s->SetBlittingFlags(DSBLIT_NOFX) )
 735         return;
 736     if ( !s->Blit(M_BITMAP->m_surface->GetRaw(), NULL, 0, 0) )
 737         return;
 738
 739     M_BITMAP->m_surface = s;
 740 }
 741
 742 wxIDirectFBSurfacePtr wxBitmap::GetDirectFBSurface() const
 743 {
 744     wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
 745
 746     return M_BITMAP->m_surface;
 747 }
 748
 749 wxGDIRefData *wxBitmap::CreateGDIRefData() const
 750 {
 751     return new wxBitmapRefData;
 752 }
 753
 754 wxGDIRefData *wxBitmap::CloneGDIRefData(const wxGDIRefData *data) const
 755 {
 756     return new wxBitmapRefData(*(wxBitmapRefData *)data);
 757 }
 758
 759
 760 /*static*/
 761 void wxBitmap::InitStandardHandlers()
 762 {
 763     // not wxBitmap handlers, we rely on wxImage
 764 }