src/common/image.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        image.cpp
   3 // Purpose:     wxImage
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "image.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #ifdef __BORLANDC__
  18 #pragma hdrstop
  19 #endif
  20
  21 #include "wx/image.h"
  22 #include "wx/bitmap.h"
  23 #include "wx/debug.h"
  24 #include "wx/log.h"
  25 #include "wx/app.h"
  26 #include "wx/filefn.h"
  27 #include "wx/wfstream.h"
  28 #include "wx/intl.h"
  29 #include "wx/module.h"
  30
  31 // For memcpy
  32 #include <string.h>
  33
  34 #ifdef __SALFORDC__
  35 #ifdef FAR
  36 #undef FAR
  37 #endif
  38 #endif
  39
  40 #ifdef __WXMSW__
  41 #include <windows.h>
  42 #endif
  43
  44 //-----------------------------------------------------------------------------
  45 // wxImage
  46 //-----------------------------------------------------------------------------
  47
  48 class wxImageRefData: public wxObjectRefData
  49 {
  50
  51 public:
  52     wxImageRefData(void);
  53     ~wxImageRefData(void);
  54
  55     int             m_width;
  56     int             m_height;
  57     unsigned char  *m_data;
  58     bool            m_hasMask;
  59     unsigned char   m_maskRed,m_maskGreen,m_maskBlue;
  60     bool            m_ok;
  61 };
  62
  63 wxImageRefData::wxImageRefData(void)
  64 {
  65     m_width = 0;
  66     m_height = 0;
  67     m_data = (unsigned char*) NULL;
  68     m_ok = FALSE;
  69     m_maskRed = 0;
  70     m_maskGreen = 0;
  71     m_maskBlue = 0;
  72     m_hasMask = FALSE;
  73 }
  74
  75 wxImageRefData::~wxImageRefData(void)
  76 {
  77     if (m_data) free( m_data );
  78 }
  79
  80 wxList wxImage::sm_handlers;
  81
  82 //-----------------------------------------------------------------------------
  83
  84 #define M_IMGDATA ((wxImageRefData *)m_refData)
  85
  86 #if !USE_SHARED_LIBRARIES
  87 IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject)
  88 #endif
  89
  90 wxImage::wxImage()
  91 {
  92 }
  93
  94 wxImage::wxImage( int width, int height )
  95 {
  96     Create( width, height );
  97 }
  98
  99 wxImage::wxImage( const wxString& name, long type )
 100 {
 101     LoadFile( name, type );
 102 }
 103
 104 wxImage::wxImage( const wxString& name, const wxString& mimetype )
 105 {
 106     LoadFile( name, mimetype );
 107 }
 108
 109 #if wxUSE_STREAMS
 110 wxImage::wxImage( wxInputStream& stream, long type )
 111 {
 112     LoadFile( stream, type );
 113 }
 114
 115 wxImage::wxImage( wxInputStream& stream, const wxString& mimetype )
 116 {
 117     LoadFile( stream, mimetype );
 118 }
 119 #endif // wxUSE_STREAMS
 120
 121 wxImage::wxImage( const wxImage& image )
 122 {
 123     Ref(image);
 124 }
 125
 126 wxImage::wxImage( const wxImage* image )
 127 {
 128     if (image) Ref(*image);
 129 }
 130
 131 void wxImage::Create( int width, int height )
 132 {
 133     m_refData = new wxImageRefData();
 134
 135     M_IMGDATA->m_data = (unsigned char *) malloc( width*height*3 );
 136     if (M_IMGDATA->m_data)
 137     {
 138         for (int l = 0; l < width*height*3; l++) M_IMGDATA->m_data[l] = 0;
 139
 140         M_IMGDATA->m_width = width;
 141         M_IMGDATA->m_height = height;
 142         M_IMGDATA->m_ok = TRUE;
 143     }
 144     else
 145     {
 146         UnRef();
 147     }
 148 }
 149
 150 void wxImage::Destroy()
 151 {
 152     UnRef();
 153 }
 154
 155 wxImage wxImage::Scale( int width, int height )
 156 {
 157     wxImage image;
 158
 159     wxCHECK_MSG( Ok(), image, _T("invalid image") );
 160
 161     wxCHECK_MSG( (width > 0) && (height > 0), image, _T("invalid image size") );
 162
 163     image.Create( width, height );
 164
 165     char unsigned *data = image.GetData();
 166
 167     wxCHECK_MSG( data, image, _T("unable to create image") );
 168
 169     if (M_IMGDATA->m_hasMask)
 170         image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
 171
 172     long old_height = M_IMGDATA->m_height;
 173     long old_width  = M_IMGDATA->m_width;
 174
 175     char unsigned *source_data = M_IMGDATA->m_data;
 176     char unsigned *target_data = data;
 177
 178     for (long j = 0; j < height; j++)
 179     {
 180         long y_offset = (j * old_height / height) * old_width;
 181
 182         for (long i = 0; i < width; i++)
 183         {
 184             memcpy( target_data,
 185                 source_data + 3*(y_offset + ((i * old_width )/ width)),
 186                 3 );
 187             target_data += 3;
 188         }
 189     }
 190
 191     return image;
 192 }
 193
 194 void wxImage::SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b )
 195 {
 196     wxCHECK_RET( Ok(), _T("invalid image") );
 197
 198     int w = M_IMGDATA->m_width;
 199     int h = M_IMGDATA->m_height;
 200
 201     wxCHECK_RET( (x>=0) && (y>=0) && (x<w) && (y<h), _T("invalid image index") );
 202
 203     long pos = (y * w + x) * 3;
 204
 205     M_IMGDATA->m_data[ pos   ] = r;
 206     M_IMGDATA->m_data[ pos+1 ] = g;
 207     M_IMGDATA->m_data[ pos+2 ] = b;
 208 }
 209
 210 unsigned char wxImage::GetRed( int x, int y )
 211 {
 212     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 213
 214     int w = M_IMGDATA->m_width;
 215     int h = M_IMGDATA->m_height;
 216
 217     wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, _T("invalid image index") );
 218
 219     long pos = (y * w + x) * 3;
 220
 221     return M_IMGDATA->m_data[pos];
 222 }
 223
 224 unsigned char wxImage::GetGreen( int x, int y )
 225 {
 226     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 227
 228     int w = M_IMGDATA->m_width;
 229     int h = M_IMGDATA->m_height;
 230
 231     wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, _T("invalid image index") );
 232
 233     long pos = (y * w + x) * 3;
 234
 235     return M_IMGDATA->m_data[pos+1];
 236 }
 237
 238 unsigned char wxImage::GetBlue( int x, int y )
 239 {
 240     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 241
 242     int w = M_IMGDATA->m_width;
 243     int h = M_IMGDATA->m_height;
 244
 245     wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, _T("invalid image index") );
 246
 247     long pos = (y * w + x) * 3;
 248
 249     return M_IMGDATA->m_data[pos+2];
 250 }
 251
 252 bool wxImage::Ok() const
 253 {
 254     return (M_IMGDATA && M_IMGDATA->m_ok);
 255 }
 256
 257 char unsigned *wxImage::GetData() const
 258 {
 259     wxCHECK_MSG( Ok(), (char unsigned *)NULL, _T("invalid image") );
 260
 261     return M_IMGDATA->m_data;
 262 }
 263
 264 void wxImage::SetData( char unsigned *data )
 265 {
 266     wxCHECK_RET( Ok(), _T("invalid image") );
 267
 268     memcpy(M_IMGDATA->m_data, data, M_IMGDATA->m_width * M_IMGDATA->m_height * 3);
 269 }
 270
 271 void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b )
 272 {
 273     wxCHECK_RET( Ok(), _T("invalid image") );
 274
 275     M_IMGDATA->m_maskRed = r;
 276     M_IMGDATA->m_maskGreen = g;
 277     M_IMGDATA->m_maskBlue = b;
 278     M_IMGDATA->m_hasMask = TRUE;
 279 }
 280
 281 unsigned char wxImage::GetMaskRed() const
 282 {
 283     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 284
 285     return M_IMGDATA->m_maskRed;
 286 }
 287
 288 unsigned char wxImage::GetMaskGreen() const
 289 {
 290     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 291
 292     return M_IMGDATA->m_maskGreen;
 293 }
 294
 295 unsigned char wxImage::GetMaskBlue() const
 296 {
 297     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 298
 299     return M_IMGDATA->m_maskBlue;
 300 }
 301
 302 void wxImage::SetMask( bool mask )
 303 {
 304     wxCHECK_RET( Ok(), _T("invalid image") );
 305
 306     M_IMGDATA->m_hasMask = mask;
 307 }
 308
 309 bool wxImage::HasMask() const
 310 {
 311     wxCHECK_MSG( Ok(), FALSE, _T("invalid image") );
 312
 313     return M_IMGDATA->m_hasMask;
 314 }
 315
 316 int wxImage::GetWidth() const
 317 {
 318     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 319
 320     return M_IMGDATA->m_width;
 321 }
 322
 323 int wxImage::GetHeight() const
 324 {
 325     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 326
 327     return M_IMGDATA->m_height;
 328 }
 329
 330 bool wxImage::LoadFile( const wxString& filename, long type )
 331 {
 332 #if wxUSE_STREAMS
 333     if (wxFileExists(filename))
 334     {
 335         wxFileInputStream stream(filename);
 336         return LoadFile(stream, type);
 337     }
 338
 339     else {
 340         wxLogError( _T("Can't load image from file '%s': file does not exist."), filename.c_str() );
 341
 342         return FALSE;
 343     }
 344 #else // !wxUSE_STREAMS
 345     return FALSE;
 346 #endif // wxUSE_STREAMS
 347 }
 348
 349 bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype )
 350 {
 351 #if wxUSE_STREAMS
 352     if (wxFileExists(filename))
 353     {
 354         wxFileInputStream stream(filename);
 355         return LoadFile(stream, mimetype);
 356     }
 357
 358     else {
 359         wxLogError( _T("Can't load image from file '%s': file does not exist."), filename.c_str() );
 360
 361         return FALSE;
 362     }
 363 #else // !wxUSE_STREAMS
 364     return FALSE;
 365 #endif // wxUSE_STREAMS
 366 }
 367
 368 bool wxImage::SaveFile( const wxString& filename, int type )
 369 {
 370 #if wxUSE_STREAMS
 371     wxFileOutputStream stream(filename);
 372
 373     if ( stream.LastError() == wxStream_NOERROR )
 374         return SaveFile(stream, type);
 375     else
 376 #endif // wxUSE_STREAMS
 377         return FALSE;
 378 }
 379
 380 bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype )
 381 {
 382 #if wxUSE_STREAMS
 383     wxFileOutputStream stream(filename);
 384
 385     if ( stream.LastError() == wxStream_NOERROR )
 386         return SaveFile(stream, mimetype);
 387     else
 388 #endif // wxUSE_STREAMS
 389         return FALSE;
 390 }
 391
 392 #if wxUSE_STREAMS
 393 bool wxImage::LoadFile( wxInputStream& stream, long type )
 394 {
 395     UnRef();
 396
 397     m_refData = new wxImageRefData;
 398
 399     wxImageHandler *handler = FindHandler(type);
 400
 401     if (handler == NULL)
 402     {
 403         wxLogWarning( _T("No image handler for type %d defined."), type );
 404
 405         return FALSE;
 406     }
 407
 408     return handler->LoadFile( this, stream );
 409 }
 410
 411 bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype )
 412 {
 413     UnRef();
 414
 415     m_refData = new wxImageRefData;
 416
 417     wxImageHandler *handler = FindHandlerMime(mimetype);
 418
 419     if (handler == NULL)
 420     {
 421         wxLogWarning( _T("No image handler for type %s defined."), mimetype.GetData() );
 422
 423         return FALSE;
 424     }
 425
 426     return handler->LoadFile( this, stream );
 427 }
 428
 429 bool wxImage::SaveFile( wxOutputStream& stream, int type )
 430 {
 431     wxCHECK_MSG( Ok(), FALSE, _T("invalid image") );
 432
 433     wxImageHandler *handler = FindHandler(type);
 434
 435     if (handler == NULL)
 436     {
 437         wxLogWarning( _T("No image handler for type %d defined."), type );
 438
 439         return FALSE;
 440     }
 441
 442     return handler->SaveFile( this, stream );
 443 }
 444
 445 bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype )
 446 {
 447     wxCHECK_MSG( Ok(), FALSE, _T("invalid image") );
 448
 449     wxImageHandler *handler = FindHandlerMime(mimetype);
 450
 451     if (handler == NULL)
 452     {
 453         wxLogWarning( _T("No image handler for type %s defined."), mimetype.GetData() );
 454
 455         return FALSE;
 456     }
 457
 458     return handler->SaveFile( this, stream );
 459 }
 460 #endif // wxUSE_STREAMS
 461
 462 void wxImage::AddHandler( wxImageHandler *handler )
 463 {
 464     // make sure that the memory will be freed at the program end
 465     sm_handlers.DeleteContents(TRUE);
 466
 467     sm_handlers.Append( handler );
 468 }
 469
 470 void wxImage::InsertHandler( wxImageHandler *handler )
 471 {
 472     // make sure that the memory will be freed at the program end
 473     sm_handlers.DeleteContents(TRUE);
 474
 475     sm_handlers.Insert( handler );
 476 }
 477
 478 bool wxImage::RemoveHandler( const wxString& name )
 479 {
 480     wxImageHandler *handler = FindHandler(name);
 481     if (handler)
 482     {
 483         sm_handlers.DeleteObject(handler);
 484         return TRUE;
 485     }
 486     else
 487         return FALSE;
 488 }
 489
 490 wxImageHandler *wxImage::FindHandler( const wxString& name )
 491 {
 492     wxNode *node = sm_handlers.First();
 493     while (node)
 494     {
 495         wxImageHandler *handler = (wxImageHandler*)node->Data();
 496         if (handler->GetName().Cmp(name) == 0) return handler;
 497
 498         node = node->Next();
 499     }
 500     return (wxImageHandler *)NULL;
 501 }
 502
 503 wxImageHandler *wxImage::FindHandler( const wxString& extension, long bitmapType )
 504 {
 505     wxNode *node = sm_handlers.First();
 506     while (node)
 507     {
 508         wxImageHandler *handler = (wxImageHandler*)node->Data();
 509         if ( (handler->GetExtension().Cmp(extension) == 0) &&
 510             (bitmapType == -1 || handler->GetType() == bitmapType) )
 511             return handler;
 512         node = node->Next();
 513     }
 514     return (wxImageHandler*)NULL;
 515 }
 516
 517 wxImageHandler *wxImage::FindHandler( long bitmapType )
 518 {
 519     wxNode *node = sm_handlers.First();
 520     while (node)
 521     {
 522         wxImageHandler *handler = (wxImageHandler *)node->Data();
 523         if (handler->GetType() == bitmapType) return handler;
 524         node = node->Next();
 525     }
 526     return NULL;
 527 }
 528
 529 wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype )
 530 {
 531     wxNode *node = sm_handlers.First();
 532     while (node)
 533     {
 534         wxImageHandler *handler = (wxImageHandler *)node->Data();
 535         if (handler->GetMimeType().IsSameAs(mimetype, FALSE)) return handler;
 536         node = node->Next();
 537     }
 538     return NULL;
 539 }
 540
 541 void wxImage::InitStandardHandlers()
 542 {
 543     AddHandler( new wxBMPHandler );
 544 }
 545
 546 void wxImage::CleanUpHandlers()
 547 {
 548     wxNode *node = sm_handlers.First();
 549     while (node)
 550     {
 551         wxImageHandler *handler = (wxImageHandler *)node->Data();
 552         wxNode *next = node->Next();
 553         delete handler;
 554         delete node;
 555         node = next;
 556     }
 557 }
 558
 559 //-----------------------------------------------------------------------------
 560 // wxImageHandler
 561 //-----------------------------------------------------------------------------
 562
 563 #if !USE_SHARED_LIBRARIES
 564 IMPLEMENT_DYNAMIC_CLASS(wxImageHandler,wxObject)
 565 #endif
 566
 567 #if wxUSE_STREAMS
 568 bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream) )
 569 {
 570     return FALSE;
 571 }
 572
 573 bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream) )
 574 {
 575     return FALSE;
 576 }
 577 #endif // wxUSE_STREAMS
 578
 579 //-----------------------------------------------------------------------------
 580 // wxBMPHandler
 581 //-----------------------------------------------------------------------------
 582
 583 #if !USE_SHARED_LIBRARIES
 584 IMPLEMENT_DYNAMIC_CLASS(wxBMPHandler,wxImageHandler)
 585 #endif
 586
 587 #if wxUSE_STREAMS
 588 bool wxBMPHandler::LoadFile( wxImage *image, wxInputStream& stream )
 589 {
 590     unsigned char      *data, *ptr;
 591     int                 done, i, bpp, planes, comp, ncolors, line, column,
 592         linesize, linepos, rshift = 0, gshift = 0, bshift = 0;
 593     unsigned char       aByte;
 594     short int           word;
 595     long int            dbuf[4], dword, rmask = 0, gmask = 0, bmask = 0, offset,
 596         size;
 597     off_t               start_offset = stream.TellI();
 598     signed char         bbuf[4];
 599     struct _cmap
 600     {
 601         unsigned char       r, g, b;
 602     }
 603     *cmap = NULL;
 604 #ifndef BI_RGB
 605 #define BI_RGB       0
 606 #define BI_RLE8      1
 607 #define BI_RLE4      2
 608 #endif
 609
 610 #ifndef BI_BITFIELDS
 611 #define BI_BITFIELDS 3
 612 #endif
 613
 614     image->Destroy();
 615
 616     done = 0;
 617     /*
 618     * Reading the bmp header
 619     */
 620
 621     stream.Read(&bbuf, 2);
 622
 623     stream.Read(dbuf, 4 * 4);
 624
 625     size = dbuf[0];
 626     offset = dbuf[2];
 627
 628     stream.Read(dbuf, 4 * 2);
 629     int width = (int)dbuf[0];
 630     int height = (int)dbuf[1];
 631     if (width > 32767)
 632     {
 633         wxLogError( _T("Image width > 32767 pixels for file\n") );
 634         return FALSE;
 635     }
 636     if (height > 32767)
 637     {
 638         wxLogError( _T("Image height > 32767 pixels for file\n") );
 639         return FALSE;
 640     }
 641     stream.Read(&word, 2);
 642     planes = (int)word;
 643     stream.Read(&word, 2);
 644     bpp = (int)word;
 645     if (bpp != 1 && bpp != 4 && bpp != 8 && bpp && 16 && bpp != 24 && bpp != 32)
 646     {
 647         wxLogError( _T("unknown bitdepth in file\n") );
 648         return FALSE;
 649     }
 650     stream.Read(dbuf, 4 * 4);
 651     comp = (int)dbuf[0];
 652     if (comp != BI_RGB && comp != BI_RLE4 && comp != BI_RLE8 && comp != BI_BITFIELDS)
 653     {
 654         wxLogError( _T("unknown encoding in Windows BMP file\n") );
 655         return FALSE;
 656     }
 657     stream.Read(dbuf, 4 * 2);
 658     ncolors = (int)dbuf[0];
 659     if (ncolors == 0)
 660         ncolors = 1 << bpp;
 661     /* some more sanity checks */
 662     if (((comp == BI_RLE4) && (bpp != 4)) || ((comp == BI_RLE8) && (bpp != 8)) || ((comp == BI_BITFIELDS) && (bpp != 16 && bpp != 32)))
 663     {
 664         wxLogError( _T("encoding of BMP doesn't match bitdepth\n") );
 665         return FALSE;
 666     }
 667     if (bpp < 16)
 668     {
 669         cmap = (struct _cmap *)malloc(sizeof(struct _cmap) * ncolors);
 670
 671         if (!cmap)
 672         {
 673             wxLogError( _T("Cannot allocate RAM for color map in BMP file\n") );
 674             return FALSE;
 675         }
 676     }
 677     else
 678         cmap = NULL;
 679
 680     image->Create( width, height );
 681     ptr = image->GetData();
 682     if (!ptr)
 683     {
 684         wxLogError( _T("Cannot allocate RAM for RGB data in file\n") );
 685         if (cmap)
 686             free(cmap);
 687         return FALSE;
 688     }
 689
 690     /*
 691     * Reading the palette, if it exists.
 692     */
 693     if (bpp < 16 && ncolors != 0)
 694     {
 695         for (i = 0; i < ncolors; i++)
 696         {
 697             stream.Read(bbuf, 4);
 698             cmap[i].b = bbuf[0];
 699             cmap[i].g = bbuf[1];
 700             cmap[i].r = bbuf[2];
 701         }
 702     }
 703     else if (bpp == 16 || bpp == 32)
 704     {
 705         if (comp == BI_BITFIELDS)
 706         {
 707             int                 bit = 0;
 708
 709             stream.Read(dbuf, 4 * 3);
 710             bmask = dbuf[0];
 711             gmask = dbuf[1];
 712             rmask = dbuf[2];
 713             /* find shift amount.. ugly, but i can't think of a better way */
 714             for (bit = 0; bit < bpp; bit++)
 715             {
 716                 if (bmask & (1 << bit))
 717                     bshift = bit;
 718                 if (gmask & (1 << bit))
 719                     gshift = bit;
 720                 if (rmask & (1 << bit))
 721                     rshift = bit;
 722             }
 723         }
 724         else if (bpp == 16)
 725         {
 726             rmask = 0x7C00;
 727             gmask = 0x03E0;
 728             bmask = 0x001F;
 729             rshift = 10;
 730             gshift = 5;
 731             bshift = 0;
 732         }
 733         else if (bpp == 32)
 734         {
 735             rmask = 0x00FF0000;
 736             gmask = 0x0000FF00;
 737             bmask = 0x000000FF;
 738             rshift = 16;
 739             gshift = 8;
 740             bshift = 0;
 741         }
 742     }
 743
 744     /*
 745     * Reading the image data
 746     */
 747     stream.SeekI(start_offset + offset);
 748     data = ptr;
 749
 750     /* set the whole image to the background color */
 751     if (bpp < 16 && (comp == BI_RLE4 || comp == BI_RLE8))
 752     {
 753         for (i = 0; i < width * height; i++)
 754         {
 755             *ptr++ = cmap[0].r;
 756             *ptr++ = cmap[0].g;
 757             *ptr++ = cmap[0].b;
 758         }
 759         ptr = data;
 760     }
 761     line = 0;
 762     column = 0;
 763 #define poffset (line * width * 3 + column * 3)
 764
 765     /*
 766     * BMPs are stored upside down... hmmmmmmmmmm....
 767     */
 768
 769     linesize = ((width * bpp + 31) / 32) * 4;
 770     for (line = (height - 1); line >= 0; line--)
 771     {
 772         linepos = 0;
 773         for (column = 0; column < width;)
 774         {
 775             if (bpp < 16)
 776             {
 777                 int                 index;
 778
 779                 linepos++;
 780                 aByte = stream.GetC();
 781                 if (bpp == 1)
 782                 {
 783                     int                 bit = 0;
 784
 785                     for (bit = 0; bit < 8; bit++)
 786                     {
 787                         index = ((aByte & (0x80 >> bit)) ? 1 : 0);
 788                         ptr[poffset] = cmap[index].r;
 789                         ptr[poffset + 1] = cmap[index].g;
 790                         ptr[poffset + 2] = cmap[index].b;
 791                         column++;
 792                     }
 793                 }
 794                 else if (bpp == 4)
 795                 {
 796                     if (comp == BI_RLE4)
 797                     {
 798                         wxLogError( _T("can't deal with 4bit encoded yet.\n") );
 799                         image->Destroy();
 800                         free(cmap);
 801                         return FALSE;
 802                     }
 803                     else
 804                     {
 805                         int                 nibble = 0;
 806
 807                         for (nibble = 0; nibble < 2; nibble++)
 808                         {
 809                             index = ((aByte & (0xF0 >> nibble * 4)) >> (!nibble * 4));
 810                             if (index >= 16)
 811                                 index = 15;
 812                             ptr[poffset] = cmap[index].r;
 813                             ptr[poffset + 1] = cmap[index].g;
 814                             ptr[poffset + 2] = cmap[index].b;
 815                             column++;
 816                         }
 817                     }
 818                 }
 819                 else if (bpp == 8)
 820                 {
 821                     if (comp == BI_RLE8)
 822                     {
 823                         unsigned char       first;
 824
 825                         first = aByte;
 826                         aByte = stream.GetC();
 827                         if (first == 0)
 828                         {
 829                             if (aByte == 0)
 830                             {
 831                                 /*                                    column = width; */
 832                             }
 833                             else if (aByte == 1)
 834                             {
 835                                 column = width;
 836                                 line = -1;
 837                             }
 838                             else if (aByte == 2)
 839                             {
 840                                 aByte = stream.GetC();
 841                                 column += aByte;
 842                                 linepos = column * bpp / 8;
 843                                 aByte = stream.GetC();
 844                                 line += aByte;
 845                             }
 846                             else
 847                             {
 848                                 int                 absolute = aByte;
 849
 850                                 for (i = 0; i < absolute; i++)
 851                                 {
 852                                     linepos++;
 853                                     aByte = stream.GetC();
 854                                     ptr[poffset] = cmap[aByte].r;
 855                                     ptr[poffset + 1] = cmap[aByte].g;
 856                                     ptr[poffset + 2] = cmap[aByte].b;
 857                                     column++;
 858                                 }
 859                                 if (absolute & 0x01)
 860                                     aByte = stream.GetC();
 861                             }
 862                         }
 863                         else
 864                         {
 865                             for (i = 0; i < first; i++)
 866                             {
 867                                 ptr[poffset] = cmap[aByte].r;
 868                                 ptr[poffset + 1] = cmap[aByte].g;
 869                                 ptr[poffset + 2] = cmap[aByte].b;
 870                                 column++;
 871                                 linepos++;
 872                             }
 873                         }
 874                     }
 875                     else
 876                     {
 877                         ptr[poffset] = cmap[aByte].r;
 878                         ptr[poffset + 1] = cmap[aByte].g;
 879                         ptr[poffset + 2] = cmap[aByte].b;
 880                         column++;
 881                         linepos += size;
 882                     }
 883                 }
 884                }
 885                else if (bpp == 24)
 886                {
 887                    stream.Read(&bbuf, 3);
 888                    linepos += 3;
 889                    ptr[poffset] = (unsigned char)bbuf[2];
 890                    ptr[poffset + 1] = (unsigned char)bbuf[1];
 891                    ptr[poffset + 2] = (unsigned char)bbuf[0];
 892                    column++;
 893                }
 894                else if (bpp == 16)
 895                {
 896                    unsigned char       temp;
 897
 898                    stream.Read(&word, 2);
 899                    linepos += 2;
 900                    temp = (word & rmask) >> rshift;
 901                    ptr[poffset] = temp;
 902                    temp = (word & gmask) >> gshift;
 903                    ptr[poffset + 1] = temp;
 904                    temp = (word & bmask) >> gshift;
 905                    ptr[poffset + 2] = temp;
 906                    column++;
 907                }
 908                else
 909                {
 910                    unsigned char       temp;
 911
 912                    stream.Read(&dword, 4);
 913                    linepos += 4;
 914                    temp = (dword & rmask) >> rshift;
 915                    ptr[poffset] = temp;
 916                    temp = (dword & gmask) >> gshift;
 917                    ptr[poffset + 1] = temp;
 918                    temp = (dword & bmask) >> bshift;
 919                    ptr[poffset + 2] = temp;
 920                    column++;
 921                }
 922           }
 923           while ((linepos < linesize) && (comp != 1) && (comp != 2))
 924           {
 925               stream.Read(&aByte, 1);
 926               linepos += 1;
 927               if (stream.LastError() != wxStream_NOERROR)
 928                   break;
 929           }
 930      }
 931      if (cmap) free(cmap);
 932
 933      image->SetMask( FALSE );
 934
 935      return TRUE;
 936 }
 937 #endif // wxUSE_STREAMS
 938
 939 #ifdef __WXMSW__
 940
 941 wxBitmap wxImage::ConvertToBitmap() const
 942 {
 943     // sizeLimit is the MS upper limit for the DIB size
 944     int sizeLimit = 1024*768*3;
 945
 946     // width and height of the device-dependent bitmap
 947     int width = GetWidth();
 948     int bmpHeight = GetHeight();
 949
 950     // calc the number of bytes per scanline and padding
 951     int bytePerLine = width*3;
 952     int sizeDWORD = sizeof( DWORD );
 953     div_t lineBoundary = div( bytePerLine, sizeDWORD );
 954     int padding = 0;
 955     if( lineBoundary.rem > 0 )
 956     {
 957         padding = sizeDWORD - lineBoundary.rem;
 958         bytePerLine += padding;
 959     }
 960     // calc the number of DIBs and heights of DIBs
 961     int numDIB = 1;
 962     int hRemain = 0;
 963     int height = sizeLimit/bytePerLine;
 964     if( height >= bmpHeight )
 965         height = bmpHeight;
 966     else
 967     {
 968         div_t result = div( bmpHeight, height );
 969         numDIB = result.quot;
 970         hRemain = result.rem;
 971         if( hRemain >0 )  numDIB++;
 972     }
 973
 974     // set bitmap parameters
 975     wxBitmap bitmap;
 976     wxCHECK_MSG( Ok(), bitmap, _T("invalid image") );
 977     bitmap.SetWidth( width );
 978     bitmap.SetHeight( bmpHeight );
 979     bitmap.SetDepth( wxDisplayDepth() );
 980
 981     // create a DIB header
 982     int headersize = sizeof(BITMAPINFOHEADER);
 983     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 984     wxCHECK_MSG( lpDIBh, bitmap, _T("could not allocate memory for DIB header") );
 985     // Fill in the DIB header
 986     lpDIBh->bmiHeader.biSize = headersize;
 987     lpDIBh->bmiHeader.biWidth = (DWORD)width;
 988     lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 989     lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 990     //   the general formula for biSizeImage:
 991     //      ( ( ( ((DWORD)width*24) +31 ) & ~31 ) >> 3 ) * height;
 992     lpDIBh->bmiHeader.biPlanes = 1;
 993     lpDIBh->bmiHeader.biBitCount = 24;
 994     lpDIBh->bmiHeader.biCompression = BI_RGB;
 995     lpDIBh->bmiHeader.biClrUsed = 0;
 996     // These seem not really needed for our purpose here.
 997     lpDIBh->bmiHeader.biClrImportant = 0;
 998     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 999     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
1000     // memory for DIB data
1001     unsigned char *lpBits;
1002     lpBits = (unsigned char *)malloc( lpDIBh->bmiHeader.biSizeImage );
1003     if( !lpBits )
1004     {
1005         wxFAIL_MSG( _T("could not allocate memory for DIB") );
1006         free( lpDIBh );
1007         return bitmap;
1008     }
1009
1010     // create and set the device-dependent bitmap
1011     HDC hdc = ::GetDC(NULL);
1012     HDC memdc = ::CreateCompatibleDC( hdc );
1013     HBITMAP hbitmap;
1014     hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight );
1015     ::SelectObject( memdc, hbitmap);
1016
1017     // copy image data into DIB data and then into DDB (in a loop)
1018     unsigned char *data = GetData();
1019     int i, j, n;
1020     int origin = 0;
1021     unsigned char *ptdata = data;
1022     unsigned char *ptbits;
1023
1024     for( n=0; n<numDIB; n++ )
1025     {
1026         if( numDIB > 1 && n == numDIB-1 && hRemain > 0 )
1027         {
1028             // redefine height and size of the (possibly) last smaller DIB
1029             // memory is not reallocated
1030             height = hRemain;
1031             lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
1032             lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
1033         }
1034         ptbits = lpBits;
1035
1036         for( j=0; j<height; j++ )
1037         {
1038             for( i=0; i<width; i++ )
1039             {
1040                 *(ptbits++) = *(ptdata+2);
1041                 *(ptbits++) = *(ptdata+1);
1042                 *(ptbits++) = *(ptdata  );
1043                 ptdata += 3;
1044             }
1045             for( i=0; i< padding; i++ )   *(ptbits++) = 0;
1046         }
1047         ::StretchDIBits( memdc, 0, origin, width, height,\
1048             0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
1049         origin += height;
1050         // if numDIB = 1,  lines below can also be used
1051         //    hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
1052         // The above line is equivalent to the following two lines.
1053         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
1054         //    ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
1055         // or the following lines
1056         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
1057         //    HDC memdc = ::CreateCompatibleDC( hdc );
1058         //    ::SelectObject( memdc, hbitmap);
1059         //    ::SetDIBitsToDevice( memdc, 0, 0, width, height,
1060         //          0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
1061         //    ::SelectObject( memdc, 0 );
1062         //    ::DeleteDC( memdc );
1063     }
1064     bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
1065
1066     // similarly, created an mono-bitmap for the possible mask
1067     if( HasMask() )
1068     {
1069         hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL );
1070         ::SelectObject( memdc, hbitmap);
1071         if( numDIB == 1 )   height = bmpHeight;
1072         else                height = sizeLimit/bytePerLine;
1073         lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
1074         lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
1075         origin = 0;
1076         unsigned char r = GetMaskRed();
1077         unsigned char g = GetMaskGreen();
1078         unsigned char b = GetMaskBlue();
1079         unsigned char zero = 0, one = 255;
1080         ptdata = data;
1081         for( n=0; n<numDIB; n++ )
1082         {
1083             if( numDIB > 1 && n == numDIB - 1 && hRemain > 0 )
1084             {
1085                 // redefine height and size of the (possibly) last smaller DIB
1086                 // memory is not reallocated
1087                 height = hRemain;
1088                 lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
1089                 lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
1090             }
1091             ptbits = lpBits;
1092             for( int j=0; j<height; j++ )
1093             {
1094                 for(i=0; i<width; i++ )
1095                 {
1096                     if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
1097                     {
1098                         *(ptbits++) = one;
1099                         *(ptbits++) = one;
1100                         *(ptbits++) = one;
1101                     }
1102                     else
1103                     {
1104                         *(ptbits++) = zero;
1105                         *(ptbits++) = zero;
1106                         *(ptbits++) = zero;
1107                     }
1108                 }
1109                 for( i=0; i< padding; i++ )   *(ptbits++) = zero;
1110             }
1111             ::StretchDIBits( memdc, 0, origin, width, height,\
1112                 0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
1113             origin += height;
1114         }
1115         // create a wxMask object
1116         wxMask *mask = new wxMask();
1117         mask->SetMaskBitmap( (WXHBITMAP) hbitmap );
1118         bitmap.SetMask( mask );
1119         // It will be deleted when the wxBitmap object is deleted (as of 01/1999)
1120         /* The following can also be used but is slow to run
1121         wxColour colour( GetMaskRed(), GetMaskGreen(), GetMaskBlue());
1122         wxMask *mask = new wxMask( bitmap, colour );
1123         bitmap.SetMask( mask );
1124         */
1125     }
1126
1127     // free allocated resources
1128     ::SelectObject( memdc, 0 );
1129     ::DeleteDC( memdc );
1130     ::ReleaseDC(NULL, hdc);
1131     free(lpDIBh);
1132     free(lpBits);
1133
1134     // check the wxBitmap object
1135     if( bitmap.GetHBITMAP() )
1136         bitmap.SetOk( TRUE );
1137     else
1138         bitmap.SetOk( FALSE );
1139
1140     return bitmap;
1141 }
1142
1143 wxImage::wxImage( const wxBitmap &bitmap )
1144 {
1145     // check the bitmap
1146     if( !bitmap.Ok() )
1147     {
1148         wxFAIL_MSG( _T("invalid bitmap") );
1149         return;
1150     }
1151
1152     // create an wxImage object
1153     int width = bitmap.GetWidth();
1154     int height = bitmap.GetHeight();
1155     Create( width, height );
1156     unsigned char *data = GetData();
1157     if( !data )
1158     {
1159         wxFAIL_MSG( _T("could not allocate data for image") );
1160         return;
1161     }
1162
1163     // calc the number of bytes per scanline and padding in the DIB
1164     int bytePerLine = width*3;
1165     int sizeDWORD = sizeof( DWORD );
1166     div_t lineBoundary = div( bytePerLine, sizeDWORD );
1167     int padding = 0;
1168     if( lineBoundary.rem > 0 )
1169     {
1170         padding = sizeDWORD - lineBoundary.rem;
1171         bytePerLine += padding;
1172     }
1173
1174     // create a DIB header
1175     int headersize = sizeof(BITMAPINFOHEADER);
1176     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
1177     if( !lpDIBh )
1178     {
1179         wxFAIL_MSG( _T("could not allocate data for DIB header") );
1180         free( data );
1181         return;
1182     }
1183     // Fill in the DIB header
1184     lpDIBh->bmiHeader.biSize = headersize;
1185     lpDIBh->bmiHeader.biWidth = width;
1186     lpDIBh->bmiHeader.biHeight = -height;
1187     lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
1188     lpDIBh->bmiHeader.biPlanes = 1;
1189     lpDIBh->bmiHeader.biBitCount = 24;
1190     lpDIBh->bmiHeader.biCompression = BI_RGB;
1191     lpDIBh->bmiHeader.biClrUsed = 0;
1192     // These seem not really needed for our purpose here.
1193     lpDIBh->bmiHeader.biClrImportant = 0;
1194     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
1195     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
1196     // memory for DIB data
1197     unsigned char *lpBits;
1198     lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
1199     if( !lpBits )
1200     {
1201         wxFAIL_MSG( _T("could not allocate data for DIB") );
1202         free( data );
1203         free( lpDIBh );
1204         return;
1205     }
1206
1207     // copy data from the device-dependent bitmap to the DIB
1208     HDC hdc = ::GetDC(NULL);
1209     HBITMAP hbitmap;
1210     hbitmap = (HBITMAP) bitmap.GetHBITMAP();
1211     ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
1212
1213     // copy DIB data into the wxImage object
1214     int i, j;
1215     unsigned char *ptdata = data;
1216     unsigned char *ptbits = lpBits;
1217     for( i=0; i<height; i++ )
1218     {
1219         for( j=0; j<width; j++ )
1220         {
1221             *(ptdata++) = *(ptbits+2);
1222             *(ptdata++) = *(ptbits+1);
1223             *(ptdata++) = *(ptbits  );
1224             ptbits += 3;
1225         }
1226         ptbits += padding;
1227     }
1228
1229     // similarly, set data according to the possible mask bitmap
1230     if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
1231     {
1232         hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
1233         // memory DC created, color set, data copied, and memory DC deleted
1234         HDC memdc = ::CreateCompatibleDC( hdc );
1235         ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
1236         ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
1237         ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
1238         ::DeleteDC( memdc );
1239         // background color set to RGB(16,16,16) in consistent with wxGTK
1240         unsigned char r=16, g=16, b=16;
1241         ptdata = data;
1242         ptbits = lpBits;
1243         for( i=0; i<height; i++ )
1244         {
1245             for( j=0; j<width; j++ )
1246             {
1247                 if( *ptbits != 0 )
1248                     ptdata += 3;
1249                 else
1250                 {
1251                     *(ptdata++)  = r;
1252                     *(ptdata++)  = g;
1253                     *(ptdata++)  = b;
1254                 }
1255                 ptbits += 3;
1256             }
1257             ptbits += padding;
1258         }
1259         SetMaskColour( r, g, b );
1260         SetMask( TRUE );
1261     }
1262     else
1263     {
1264         SetMask( FALSE );
1265     }
1266     // free allocated resources
1267     ::ReleaseDC(NULL, hdc);
1268     free(lpDIBh);
1269     free(lpBits);
1270 }
1271
1272 #endif
1273
1274 #ifdef __WXGTK__
1275
1276 #include "gtk/gtk.h"
1277 #include "gdk/gdk.h"
1278 #include "gdk/gdkx.h"
1279
1280 wxBitmap wxImage::ConvertToBitmap() const
1281 {
1282     wxBitmap bitmap;
1283
1284     wxCHECK_MSG( Ok(), bitmap, _T("invalid image") );
1285
1286     int width = GetWidth();
1287     int height = GetHeight();
1288
1289     bitmap.SetHeight( height );
1290     bitmap.SetWidth( width );
1291
1292     // Create picture
1293
1294     GdkImage *data_image =
1295         gdk_image_new( GDK_IMAGE_FASTEST, gdk_visual_get_system(), width, height );
1296
1297     bitmap.SetPixmap( gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, -1 ) );
1298
1299     // Create mask
1300
1301     GdkImage *mask_image = (GdkImage*) NULL;
1302
1303     if (HasMask())
1304     {
1305         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1306
1307         mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1308
1309         wxMask *mask = new wxMask();
1310         mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1311
1312         bitmap.SetMask( mask );
1313     }
1314
1315     // Retrieve depth
1316
1317     GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
1318     if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent );
1319     int bpp = visual->depth;
1320
1321     bitmap.SetDepth( bpp );
1322
1323     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1324     if (bpp < 8) bpp = 8;
1325
1326     // Render
1327
1328     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1329     byte_order b_o = RGB;
1330
1331     if (bpp >= 24)
1332     {
1333         GdkVisual *visual = gdk_visual_get_system();
1334         if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
1335         else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RGB;
1336         else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
1337         else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
1338         else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
1339         else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
1340     }
1341
1342     int r_mask = GetMaskRed();
1343     int g_mask = GetMaskGreen();
1344     int b_mask = GetMaskBlue();
1345
1346     unsigned char* data = GetData();
1347
1348     int index = 0;
1349     for (int y = 0; y < height; y++)
1350     {
1351         for (int x = 0; x < width; x++)
1352         {
1353             int r = data[index];
1354             index++;
1355             int g = data[index];
1356             index++;
1357             int b = data[index];
1358             index++;
1359
1360             if (HasMask())
1361             {
1362                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1363                     gdk_image_put_pixel( mask_image, x, y, 1 );
1364                 else
1365                     gdk_image_put_pixel( mask_image, x, y, 0 );
1366             }
1367
1368             if (HasMask())
1369             {
1370                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1371                     gdk_image_put_pixel( mask_image, x, y, 1 );
1372                 else
1373                     gdk_image_put_pixel( mask_image, x, y, 0 );
1374             }
1375
1376             switch (bpp)
1377             {
1378             case 8:
1379                 {
1380                     int pixel = -1;
1381                     if (wxTheApp->m_colorCube)
1382                     {
1383                         pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1384                     }
1385                     else
1386                     {
1387                         GdkColormap *cmap = gtk_widget_get_default_colormap();
1388                         GdkColor *colors = cmap->colors;
1389                         int max = 3 * (65536);
1390
1391                         for (int i = 0; i < cmap->size; i++)
1392                         {
1393                             int rdiff = (r << 8) - colors[i].red;
1394                             int gdiff = (g << 8) - colors[i].green;
1395                             int bdiff = (b << 8) - colors[i].blue;
1396                             int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
1397                             if (sum < max) { pixel = i; max = sum; }
1398                         }
1399                     }
1400
1401                     gdk_image_put_pixel( data_image, x, y, pixel );
1402
1403                     break;
1404                 }
1405             case 15:
1406                 {
1407                     guint32 pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1408                     gdk_image_put_pixel( data_image, x, y, pixel );
1409                     break;
1410                 }
1411             case 16:
1412                 {
1413                     guint32 pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1414                     gdk_image_put_pixel( data_image, x, y, pixel );
1415                     break;
1416                 }
1417             case 32:
1418             case 24:
1419                 {
1420                     guint32 pixel = 0;
1421                     switch (b_o)
1422                     {
1423                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1424                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1425                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1426                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1427                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1428                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1429                     }
1430                     gdk_image_put_pixel( data_image, x, y, pixel );
1431                 }
1432             default: break;
1433             }
1434         } // for
1435     }  // for
1436
1437     // Blit picture
1438
1439     GdkGC *data_gc = gdk_gc_new( bitmap.GetPixmap() );
1440
1441     gdk_draw_image( bitmap.GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
1442
1443     gdk_image_destroy( data_image );
1444     gdk_gc_unref( data_gc );
1445
1446     // Blit mask
1447
1448     if (HasMask())
1449     {
1450         GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1451
1452         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1453
1454         gdk_image_destroy( mask_image );
1455         gdk_gc_unref( mask_gc );
1456     }
1457
1458     return bitmap;
1459 }
1460
1461 wxImage::wxImage( const wxBitmap &bitmap )
1462 {
1463     wxCHECK_RET( bitmap.Ok(), _T("invalid bitmap") );
1464
1465     GdkImage *gdk_image = gdk_image_get( bitmap.GetPixmap(),
1466         0, 0,
1467         bitmap.GetWidth(), bitmap.GetHeight() );
1468
1469     wxCHECK_RET( gdk_image, _T("couldn't create image") );
1470
1471     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1472     char unsigned *data = GetData();
1473
1474     if (!data)
1475     {
1476         gdk_image_destroy( gdk_image );
1477         wxFAIL_MSG( _T("couldn't create image") );
1478         return;
1479     }
1480
1481     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1482     if (bitmap.GetMask())
1483     {
1484         gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1485             0, 0,
1486             bitmap.GetWidth(), bitmap.GetHeight() );
1487
1488         SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1489     }
1490
1491     GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
1492     if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent );
1493     int bpp = visual->depth;
1494     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1495
1496     GdkColormap *cmap = gtk_widget_get_default_colormap();
1497
1498     long pos = 0;
1499     for (int j = 0; j < bitmap.GetHeight(); j++)
1500     {
1501         for (int i = 0; i < bitmap.GetWidth(); i++)
1502         {
1503             int pixel = gdk_image_get_pixel( gdk_image, i, j );
1504             if (bpp <= 8)
1505             {
1506                 data[pos] = cmap->colors[pixel].red >> 8;
1507                 data[pos+1] = cmap->colors[pixel].green >> 8;
1508                 data[pos+2] = cmap->colors[pixel].blue >> 8;
1509             } else if (bpp == 15)
1510             {
1511                 data[pos] = (pixel >> 7) & 0xf8;
1512                 data[pos+1] = (pixel >> 2) & 0xf8;
1513                 data[pos+2] = (pixel << 3) & 0xf8;
1514             } else if (bpp == 16)
1515             {
1516                 data[pos] = (pixel >> 8) & 0xf8;
1517                 data[pos+1] = (pixel >> 3) & 0xfc;
1518                 data[pos+2] = (pixel << 3) & 0xf8;
1519             } else
1520             {
1521                 data[pos] = (pixel >> 16) & 0xff;
1522                 data[pos+1] = (pixel >> 8) & 0xff;
1523                 data[pos+2] = pixel & 0xff;
1524             }
1525
1526             if (gdk_image_mask)
1527             {
1528                 int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1529                 if (mask_pixel == 0)
1530                 {
1531                     data[pos] = 16;
1532                     data[pos+1] = 16;
1533                     data[pos+2] = 16;
1534                 }
1535             }
1536
1537             pos += 3;
1538         }
1539     }
1540
1541     gdk_image_destroy( gdk_image );
1542     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1543 }
1544
1545 #endif
1546
1547 #ifdef __WXMOTIF__
1548
1549 #include <Xm/Xm.h>
1550 #include "wx/utils.h"
1551 #include <math.h>
1552
1553 wxBitmap wxImage::ConvertToBitmap() const
1554 {
1555     wxBitmap bitmap;
1556
1557     wxCHECK_MSG( Ok(), bitmap, _T("invalid image") );
1558
1559     int width = GetWidth();
1560     int height = GetHeight();
1561
1562     bitmap.SetHeight( height );
1563     bitmap.SetWidth( width );
1564
1565     Display *dpy = (Display*) wxGetDisplay();
1566     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1567     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1568
1569     // Create image
1570
1571     XImage *data_image = XCreateImage( dpy, vis, bpp, ZPixmap, 0, 0, width, height, 32, 0 );
1572     data_image->data = (char*) malloc( data_image->bytes_per_line * data_image->height );
1573
1574     bitmap.Create( width, height, bpp );
1575
1576     /*
1577     // Create mask
1578
1579       GdkImage *mask_image = (GdkImage*) NULL;
1580
1581         if (HasMask())
1582         {
1583         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1584
1585           mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1586
1587             wxMask *mask = new wxMask();
1588             mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1589
1590               bitmap.SetMask( mask );
1591               }
1592     */
1593
1594     // Retrieve depth info
1595
1596     XVisualInfo vinfo_template;
1597     XVisualInfo *vi;
1598
1599     vinfo_template.visual = vis;
1600     vinfo_template.visualid = XVisualIDFromVisual( vis );
1601     vinfo_template.depth = bpp;
1602     int nitem = 0;
1603
1604     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1605
1606     if (!vi)
1607     {
1608         printf("no visual.\n" );
1609         return wxNullBitmap;
1610     }
1611
1612     XFree( vi );
1613
1614     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1615     if (bpp < 8) bpp = 8;
1616
1617     // Render
1618
1619     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1620     byte_order b_o = RGB;
1621
1622     if (bpp >= 24)
1623     {
1624         if ((vi->red_mask > vi->green_mask) && (vi->green_mask > vi->blue_mask))      b_o = RGB;
1625         else if ((vi->red_mask > vi->blue_mask) && (vi->blue_mask > vi->green_mask))  b_o = RGB;
1626         else if ((vi->blue_mask > vi->red_mask) && (vi->red_mask > vi->green_mask))   b_o = BRG;
1627         else if ((vi->blue_mask > vi->green_mask) && (vi->green_mask > vi->red_mask)) b_o = BGR;
1628         else if ((vi->green_mask > vi->red_mask) && (vi->red_mask > vi->blue_mask))   b_o = GRB;
1629         else if ((vi->green_mask > vi->blue_mask) && (vi->blue_mask > vi->red_mask))  b_o = GBR;
1630     }
1631
1632     /*
1633     int r_mask = GetMaskRed();
1634     int g_mask = GetMaskGreen();
1635     int b_mask = GetMaskBlue();
1636     */
1637
1638     XColor colors[256];
1639     if (bpp == 8)
1640     {
1641         Colormap cmap = (Colormap) wxTheApp->GetMainColormap( dpy );
1642
1643         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1644         XQueryColors( dpy, cmap, colors, 256 );
1645     }
1646
1647     unsigned char* data = GetData();
1648
1649     int index = 0;
1650     for (int y = 0; y < height; y++)
1651     {
1652         for (int x = 0; x < width; x++)
1653         {
1654             int r = data[index];
1655             index++;
1656             int g = data[index];
1657             index++;
1658             int b = data[index];
1659             index++;
1660
1661             /*
1662             if (HasMask())
1663             {
1664             if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1665             gdk_image_put_pixel( mask_image, x, y, 1 );
1666             else
1667             gdk_image_put_pixel( mask_image, x, y, 0 );
1668             }
1669             */
1670
1671             switch (bpp)
1672             {
1673             case 8:
1674                 {
1675                     int pixel = -1;
1676                     /*
1677                     if (wxTheApp->m_colorCube)
1678                     {
1679                     pixel = wxTheApp->m_colorCube
1680                     [ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1681                     }
1682                     else
1683                     {
1684                     */
1685                     int max = 3 * (65536);
1686                     for (int i = 0; i < 256; i++)
1687                     {
1688                         int rdiff = (r << 8) - colors[i].red;
1689                         int gdiff = (g << 8) - colors[i].green;
1690                         int bdiff = (b << 8) - colors[i].blue;
1691                         int sum = abs (rdiff) + abs (gdiff) + abs (bdiff);
1692                         if (sum < max) { pixel = i; max = sum; }
1693                     }
1694                     /*
1695                     }
1696                     */
1697                     XPutPixel( data_image, x, y, pixel );
1698                     break;
1699                 }
1700             case 15:
1701                 {
1702                     int pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1703                     XPutPixel( data_image, x, y, pixel );
1704                     break;
1705                 }
1706             case 16:
1707                 {
1708                     int pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1709                     XPutPixel( data_image, x, y, pixel );
1710                     break;
1711                 }
1712             case 32:
1713             case 24:
1714                 {
1715                     int pixel = 0;
1716                     switch (b_o)
1717                     {
1718                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1719                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1720                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1721                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1722                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1723                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1724                     }
1725                     XPutPixel( data_image, x, y, pixel );
1726                 }
1727             default: break;
1728             }
1729         } // for
1730     }  // for
1731
1732     // Blit picture
1733
1734     XGCValues gcvalues;
1735     gcvalues.foreground = BlackPixel( dpy, DefaultScreen( dpy ) );
1736     GC gc = XCreateGC( dpy, RootWindow ( dpy, DefaultScreen(dpy) ), GCForeground, &gcvalues );
1737     XPutImage( dpy, (Drawable)bitmap.GetPixmap(), gc, data_image, 0, 0, 0, 0, width, height );
1738
1739     XDestroyImage( data_image );
1740     XFreeGC( dpy, gc );
1741
1742     /*
1743     // Blit mask
1744
1745       if (HasMask())
1746       {
1747       GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1748
1749         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1750
1751           gdk_image_destroy( mask_image );
1752           gdk_gc_unref( mask_gc );
1753           }
1754     */
1755
1756     return bitmap;
1757 }
1758
1759 wxImage::wxImage( const wxBitmap &bitmap )
1760 {
1761     wxCHECK_RET( bitmap.Ok(), _T("invalid bitmap") );
1762
1763     Display *dpy = (Display*) wxGetDisplay();
1764     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1765     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1766
1767     XImage *ximage = XGetImage( dpy,
1768         (Drawable)bitmap.GetPixmap(),
1769         0, 0,
1770         bitmap.GetWidth(), bitmap.GetHeight(),
1771         AllPlanes, ZPixmap );
1772
1773     wxCHECK_RET( ximage, _T("couldn't create image") );
1774
1775     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1776     char unsigned *data = GetData();
1777
1778     if (!data)
1779     {
1780         XDestroyImage( ximage );
1781         wxFAIL_MSG( _T("couldn't create image") );
1782         return;
1783     }
1784
1785     /*
1786     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1787     if (bitmap.GetMask())
1788     {
1789     gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1790     0, 0,
1791     bitmap.GetWidth(), bitmap.GetHeight() );
1792
1793       SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1794       }
1795     */
1796
1797     // Retrieve depth info
1798
1799     XVisualInfo vinfo_template;
1800     XVisualInfo *vi;
1801
1802     vinfo_template.visual = vis;
1803     vinfo_template.visualid = XVisualIDFromVisual( vis );
1804     vinfo_template.depth = bpp;
1805     int nitem = 0;
1806
1807     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1808
1809     if (!vi)
1810     {
1811         printf("no visual.\n" );
1812         return;
1813     }
1814
1815     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1816
1817     XFree( vi );
1818
1819     XColor colors[256];
1820     if (bpp == 8)
1821     {
1822         Colormap cmap = (Colormap)wxTheApp->GetMainColormap( dpy );
1823
1824         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1825         XQueryColors( dpy, cmap, colors, 256 );
1826     }
1827
1828     long pos = 0;
1829     for (int j = 0; j < bitmap.GetHeight(); j++)
1830     {
1831         for (int i = 0; i < bitmap.GetWidth(); i++)
1832         {
1833             int pixel = XGetPixel( ximage, i, j );
1834             if (bpp <= 8)
1835             {
1836                 data[pos] = colors[pixel].red >> 8;
1837                 data[pos+1] = colors[pixel].green >> 8;
1838                 data[pos+2] = colors[pixel].blue >> 8;
1839             } else if (bpp == 15)
1840             {
1841                 data[pos] = (pixel >> 7) & 0xf8;
1842                 data[pos+1] = (pixel >> 2) & 0xf8;
1843                 data[pos+2] = (pixel << 3) & 0xf8;
1844             } else if (bpp == 16)
1845             {
1846                 data[pos] = (pixel >> 8) & 0xf8;
1847                 data[pos+1] = (pixel >> 3) & 0xfc;
1848                 data[pos+2] = (pixel << 3) & 0xf8;
1849             } else
1850             {
1851                 data[pos] = (pixel >> 16) & 0xff;
1852                 data[pos+1] = (pixel >> 8) & 0xff;
1853                 data[pos+2] = pixel & 0xff;
1854             }
1855
1856             /*
1857             if (gdk_image_mask)
1858             {
1859             int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1860             if (mask_pixel == 0)
1861             {
1862             data[pos] = 16;
1863             data[pos+1] = 16;
1864             data[pos+2] = 16;
1865             }
1866             }
1867             */
1868
1869             pos += 3;
1870         }
1871     }
1872
1873     XDestroyImage( ximage );
1874     /*
1875     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1876     */
1877 }
1878 #endif
1879
1880 // A module to allow wxImage initialization/cleanup
1881 // without calling these functions from app.cpp or from
1882 // the user's application.
1883
1884 class wxImageModule: public wxModule
1885 {
1886 DECLARE_DYNAMIC_CLASS(wxImageModule)
1887 public:
1888     wxImageModule() {}
1889     bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; };
1890     void OnExit() { wxImage::CleanUpHandlers(); };
1891 };
1892
1893 IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)