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     #undef FAR
  36 #endif
  37
  38 #ifdef __WXMSW__
  39     #include "wx/msw/private.h"
  40 #endif
  41
  42 //-----------------------------------------------------------------------------
  43 // wxImage
  44 //-----------------------------------------------------------------------------
  45
  46 class wxImageRefData: public wxObjectRefData
  47 {
  48
  49 public:
  50     wxImageRefData();
  51     ~wxImageRefData();
  52
  53     int             m_width;
  54     int             m_height;
  55     unsigned char  *m_data;
  56     bool            m_hasMask;
  57     unsigned char   m_maskRed,m_maskGreen,m_maskBlue;
  58     bool            m_ok;
  59 };
  60
  61 wxImageRefData::wxImageRefData()
  62 {
  63     m_width = 0;
  64     m_height = 0;
  65     m_data = (unsigned char*) NULL;
  66     m_ok = FALSE;
  67     m_maskRed = 0;
  68     m_maskGreen = 0;
  69     m_maskBlue = 0;
  70     m_hasMask = FALSE;
  71 }
  72
  73 wxImageRefData::~wxImageRefData()
  74 {
  75     if (m_data) free( m_data );
  76 }
  77
  78 wxList wxImage::sm_handlers;
  79
  80 //-----------------------------------------------------------------------------
  81
  82 #define M_IMGDATA ((wxImageRefData *)m_refData)
  83
  84 #if !USE_SHARED_LIBRARIES
  85     IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject)
  86 #endif
  87
  88 wxImage::wxImage()
  89 {
  90 }
  91
  92 wxImage::wxImage( int width, int height )
  93 {
  94     Create( width, height );
  95 }
  96
  97 wxImage::wxImage( const wxString& name, long type )
  98 {
  99     LoadFile( name, type );
 100 }
 101
 102 wxImage::wxImage( const wxString& name, const wxString& mimetype )
 103 {
 104     LoadFile( name, mimetype );
 105 }
 106
 107 #if wxUSE_STREAMS
 108 wxImage::wxImage( wxInputStream& stream, long type )
 109 {
 110     LoadFile( stream, type );
 111 }
 112
 113 wxImage::wxImage( wxInputStream& stream, const wxString& mimetype )
 114 {
 115     LoadFile( stream, mimetype );
 116 }
 117 #endif // wxUSE_STREAMS
 118
 119 wxImage::wxImage( const wxImage& image )
 120 {
 121     Ref(image);
 122 }
 123
 124 wxImage::wxImage( const wxImage* image )
 125 {
 126     if (image) Ref(*image);
 127 }
 128
 129 void wxImage::Create( int width, int height )
 130 {
 131     m_refData = new wxImageRefData();
 132
 133     M_IMGDATA->m_data = (unsigned char *) malloc( width*height*3 );
 134     if (M_IMGDATA->m_data)
 135     {
 136         for (int l = 0; l < width*height*3; l++) M_IMGDATA->m_data[l] = 0;
 137
 138         M_IMGDATA->m_width = width;
 139         M_IMGDATA->m_height = height;
 140         M_IMGDATA->m_ok = TRUE;
 141     }
 142     else
 143     {
 144         UnRef();
 145     }
 146 }
 147
 148 void wxImage::Destroy()
 149 {
 150     UnRef();
 151 }
 152
 153 wxImage wxImage::Scale( int width, int height ) const
 154 {
 155     wxImage image;
 156
 157     wxCHECK_MSG( Ok(), image, wxT("invalid image") );
 158
 159     wxCHECK_MSG( (width > 0) && (height > 0), image, wxT("invalid image size") );
 160
 161     image.Create( width, height );
 162
 163     char unsigned *data = image.GetData();
 164
 165     wxCHECK_MSG( data, image, wxT("unable to create image") );
 166
 167     if (M_IMGDATA->m_hasMask)
 168         image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
 169
 170     long old_height = M_IMGDATA->m_height;
 171     long old_width  = M_IMGDATA->m_width;
 172
 173     char unsigned *source_data = M_IMGDATA->m_data;
 174     char unsigned *target_data = data;
 175
 176     for (long j = 0; j < height; j++)
 177     {
 178         long y_offset = (j * old_height / height) * old_width;
 179
 180         for (long i = 0; i < width; i++)
 181         {
 182             memcpy( target_data,
 183                 source_data + 3*(y_offset + ((i * old_width )/ width)),
 184                 3 );
 185             target_data += 3;
 186         }
 187     }
 188
 189     return image;
 190 }
 191
 192 wxImage wxImage::GetSubImage( const wxRect &rect ) const
 193 {
 194     wxImage image;
 195
 196     wxCHECK_MSG( Ok(), image, wxT("invalid image") );
 197
 198     wxCHECK_MSG( (rect.GetLeft()>=0) && (rect.GetTop()>=0) && (rect.GetRight()<=GetWidth()) && (rect.GetBottom()<=GetHeight())
 199                  , image, wxT("invalid subimage size") );
 200
 201     int subwidth=rect.GetWidth();
 202     const int subheight=rect.GetHeight();
 203
 204     image.Create( subwidth, subheight );
 205
 206     char unsigned *subdata = image.GetData(), *data=GetData();
 207
 208     wxCHECK_MSG( subdata, image, wxT("unable to create image") );
 209
 210     if (M_IMGDATA->m_hasMask)
 211         image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
 212
 213     const int subleft=3*rect.GetLeft();
 214     const int width=3*GetWidth();
 215     subwidth*=3;
 216
 217     data+=rect.GetTop()*width+subleft;
 218
 219     for (long j = 0; j < subheight; ++j)
 220     {
 221         memcpy( subdata, data, subwidth);
 222         subdata+=subwidth;
 223         data+=width;
 224     }
 225
 226     return image;
 227 }
 228
 229 void wxImage::SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b )
 230 {
 231     wxCHECK_RET( Ok(), wxT("invalid image") );
 232
 233     int w = M_IMGDATA->m_width;
 234     int h = M_IMGDATA->m_height;
 235
 236     wxCHECK_RET( (x>=0) && (y>=0) && (x<w) && (y<h), wxT("invalid image index") );
 237
 238     long pos = (y * w + x) * 3;
 239
 240     M_IMGDATA->m_data[ pos   ] = r;
 241     M_IMGDATA->m_data[ pos+1 ] = g;
 242     M_IMGDATA->m_data[ pos+2 ] = b;
 243 }
 244
 245 unsigned char wxImage::GetRed( int x, int y )
 246 {
 247     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 248
 249     int w = M_IMGDATA->m_width;
 250     int h = M_IMGDATA->m_height;
 251
 252     wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, wxT("invalid image index") );
 253
 254     long pos = (y * w + x) * 3;
 255
 256     return M_IMGDATA->m_data[pos];
 257 }
 258
 259 unsigned char wxImage::GetGreen( int x, int y )
 260 {
 261     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 262
 263     int w = M_IMGDATA->m_width;
 264     int h = M_IMGDATA->m_height;
 265
 266     wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, wxT("invalid image index") );
 267
 268     long pos = (y * w + x) * 3;
 269
 270     return M_IMGDATA->m_data[pos+1];
 271 }
 272
 273 unsigned char wxImage::GetBlue( int x, int y )
 274 {
 275     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 276
 277     int w = M_IMGDATA->m_width;
 278     int h = M_IMGDATA->m_height;
 279
 280     wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, wxT("invalid image index") );
 281
 282     long pos = (y * w + x) * 3;
 283
 284     return M_IMGDATA->m_data[pos+2];
 285 }
 286
 287 bool wxImage::Ok() const
 288 {
 289     return (M_IMGDATA && M_IMGDATA->m_ok);
 290 }
 291
 292 char unsigned *wxImage::GetData() const
 293 {
 294     wxCHECK_MSG( Ok(), (char unsigned *)NULL, wxT("invalid image") );
 295
 296     return M_IMGDATA->m_data;
 297 }
 298
 299 void wxImage::SetData( char unsigned *data )
 300 {
 301     wxCHECK_RET( Ok(), wxT("invalid image") );
 302
 303     wxImageRefData *newRefData = new wxImageRefData();
 304
 305     newRefData->m_width = M_IMGDATA->m_width;
 306     newRefData->m_height = M_IMGDATA->m_height;
 307     newRefData->m_data = data;
 308     newRefData->m_ok = TRUE;
 309     newRefData->m_maskRed = M_IMGDATA->m_maskRed;
 310     newRefData->m_maskGreen = M_IMGDATA->m_maskGreen;
 311     newRefData->m_maskBlue = M_IMGDATA->m_maskBlue;
 312     newRefData->m_hasMask = M_IMGDATA->m_hasMask;
 313
 314     UnRef();
 315
 316     m_refData = newRefData;
 317 }
 318
 319 void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b )
 320 {
 321     wxCHECK_RET( Ok(), wxT("invalid image") );
 322
 323     M_IMGDATA->m_maskRed = r;
 324     M_IMGDATA->m_maskGreen = g;
 325     M_IMGDATA->m_maskBlue = b;
 326     M_IMGDATA->m_hasMask = TRUE;
 327 }
 328
 329 unsigned char wxImage::GetMaskRed() const
 330 {
 331     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 332
 333     return M_IMGDATA->m_maskRed;
 334 }
 335
 336 unsigned char wxImage::GetMaskGreen() const
 337 {
 338     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 339
 340     return M_IMGDATA->m_maskGreen;
 341 }
 342
 343 unsigned char wxImage::GetMaskBlue() const
 344 {
 345     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 346
 347     return M_IMGDATA->m_maskBlue;
 348 }
 349
 350 void wxImage::SetMask( bool mask )
 351 {
 352     wxCHECK_RET( Ok(), wxT("invalid image") );
 353
 354     M_IMGDATA->m_hasMask = mask;
 355 }
 356
 357 bool wxImage::HasMask() const
 358 {
 359     wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
 360
 361     return M_IMGDATA->m_hasMask;
 362 }
 363
 364 int wxImage::GetWidth() const
 365 {
 366     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 367
 368     return M_IMGDATA->m_width;
 369 }
 370
 371 int wxImage::GetHeight() const
 372 {
 373     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 374
 375     return M_IMGDATA->m_height;
 376 }
 377
 378 bool wxImage::LoadFile( const wxString& filename, long type )
 379 {
 380 #if wxUSE_STREAMS
 381     if (wxFileExists(filename))
 382     {
 383         wxFileInputStream stream(filename);
 384         return LoadFile(stream, type);
 385     }
 386
 387     else {
 388         wxLogError( wxT("Can't load image from file '%s': file does not exist."), filename.c_str() );
 389
 390         return FALSE;
 391     }
 392 #else // !wxUSE_STREAMS
 393     return FALSE;
 394 #endif // wxUSE_STREAMS
 395 }
 396
 397 bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype )
 398 {
 399 #if wxUSE_STREAMS
 400     if (wxFileExists(filename))
 401     {
 402         wxFileInputStream stream(filename);
 403         return LoadFile(stream, mimetype);
 404     }
 405
 406     else {
 407         wxLogError( wxT("Can't load image from file '%s': file does not exist."), filename.c_str() );
 408
 409         return FALSE;
 410     }
 411 #else // !wxUSE_STREAMS
 412     return FALSE;
 413 #endif // wxUSE_STREAMS
 414 }
 415
 416 bool wxImage::SaveFile( const wxString& filename, int type )
 417 {
 418 #if wxUSE_STREAMS
 419     wxFileOutputStream stream(filename);
 420
 421     if ( stream.LastError() == wxStream_NOERROR )
 422         return SaveFile(stream, type);
 423     else
 424 #endif // wxUSE_STREAMS
 425         return FALSE;
 426 }
 427
 428 bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype )
 429 {
 430 #if wxUSE_STREAMS
 431     wxFileOutputStream stream(filename);
 432
 433     if ( stream.LastError() == wxStream_NOERROR )
 434         return SaveFile(stream, mimetype);
 435     else
 436 #endif // wxUSE_STREAMS
 437         return FALSE;
 438 }
 439
 440 bool wxImage::CanRead( const wxString &name )
 441 {
 442 #if wxUSE_STREAMS
 443   wxFileInputStream stream(name);
 444   return CanRead(stream);
 445 #else
 446   return FALSE;
 447 #endif
 448 }
 449
 450 #if wxUSE_STREAMS
 451
 452 bool wxImage::CanRead( wxInputStream &stream )
 453 {
 454   wxList &list=GetHandlers();
 455
 456   for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
 457     {
 458       wxImageHandler *handler=(wxImageHandler*)node->GetData();
 459       if (handler->CanRead( stream ))
 460         return TRUE;
 461     }
 462
 463   return FALSE;
 464 }
 465
 466 bool wxImage::LoadFile( wxInputStream& stream, long type )
 467 {
 468     UnRef();
 469
 470     m_refData = new wxImageRefData;
 471
 472     wxImageHandler *handler;
 473
 474     if (type==wxBITMAP_TYPE_ANY)
 475     {
 476         wxList &list=GetHandlers();
 477
 478         for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
 479         {
 480              handler=(wxImageHandler*)node->GetData();
 481              if (handler->CanRead( stream ))
 482                  return handler->LoadFile( this, stream );
 483
 484         }
 485
 486         wxLogWarning( wxT("No handler found for this image.") );
 487         return FALSE;
 488     }
 489
 490     handler = FindHandler(type);
 491
 492     if (handler == NULL)
 493     {
 494         wxLogWarning( wxT("No image handler for type %d defined."), type );
 495
 496         return FALSE;
 497     }
 498
 499     return handler->LoadFile( this, stream );
 500 }
 501
 502 bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype )
 503 {
 504     UnRef();
 505
 506     m_refData = new wxImageRefData;
 507
 508     wxImageHandler *handler = FindHandlerMime(mimetype);
 509
 510     if (handler == NULL)
 511     {
 512         wxLogWarning( wxT("No image handler for type %s defined."), mimetype.GetData() );
 513
 514         return FALSE;
 515     }
 516
 517     return handler->LoadFile( this, stream );
 518 }
 519
 520 bool wxImage::SaveFile( wxOutputStream& stream, int type )
 521 {
 522     wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
 523
 524     wxImageHandler *handler = FindHandler(type);
 525
 526     if (handler == NULL)
 527     {
 528         wxLogWarning( wxT("No image handler for type %d defined."), type );
 529
 530         return FALSE;
 531     }
 532
 533     return handler->SaveFile( this, stream );
 534 }
 535
 536 bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype )
 537 {
 538     wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
 539
 540     wxImageHandler *handler = FindHandlerMime(mimetype);
 541
 542     if (handler == NULL)
 543     {
 544         wxLogWarning( wxT("No image handler for type %s defined."), mimetype.GetData() );
 545
 546         return FALSE;
 547     }
 548
 549     return handler->SaveFile( this, stream );
 550 }
 551 #endif // wxUSE_STREAMS
 552
 553 void wxImage::AddHandler( wxImageHandler *handler )
 554 {
 555     // make sure that the memory will be freed at the program end
 556     sm_handlers.DeleteContents(TRUE);
 557
 558     sm_handlers.Append( handler );
 559 }
 560
 561 void wxImage::InsertHandler( wxImageHandler *handler )
 562 {
 563     // make sure that the memory will be freed at the program end
 564     sm_handlers.DeleteContents(TRUE);
 565
 566     sm_handlers.Insert( handler );
 567 }
 568
 569 bool wxImage::RemoveHandler( const wxString& name )
 570 {
 571     wxImageHandler *handler = FindHandler(name);
 572     if (handler)
 573     {
 574         sm_handlers.DeleteObject(handler);
 575         return TRUE;
 576     }
 577     else
 578         return FALSE;
 579 }
 580
 581 wxImageHandler *wxImage::FindHandler( const wxString& name )
 582 {
 583     wxNode *node = sm_handlers.First();
 584     while (node)
 585     {
 586         wxImageHandler *handler = (wxImageHandler*)node->Data();
 587         if (handler->GetName().Cmp(name) == 0) return handler;
 588
 589         node = node->Next();
 590     }
 591     return (wxImageHandler *)NULL;
 592 }
 593
 594 wxImageHandler *wxImage::FindHandler( const wxString& extension, long bitmapType )
 595 {
 596     wxNode *node = sm_handlers.First();
 597     while (node)
 598     {
 599         wxImageHandler *handler = (wxImageHandler*)node->Data();
 600         if ( (handler->GetExtension().Cmp(extension) == 0) &&
 601             (bitmapType == -1 || handler->GetType() == bitmapType) )
 602             return handler;
 603         node = node->Next();
 604     }
 605     return (wxImageHandler*)NULL;
 606 }
 607
 608 wxImageHandler *wxImage::FindHandler( long bitmapType )
 609 {
 610     wxNode *node = sm_handlers.First();
 611     while (node)
 612     {
 613         wxImageHandler *handler = (wxImageHandler *)node->Data();
 614         if (handler->GetType() == bitmapType) return handler;
 615         node = node->Next();
 616     }
 617     return NULL;
 618 }
 619
 620 wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype )
 621 {
 622     wxNode *node = sm_handlers.First();
 623     while (node)
 624     {
 625         wxImageHandler *handler = (wxImageHandler *)node->Data();
 626         if (handler->GetMimeType().IsSameAs(mimetype, FALSE)) return handler;
 627         node = node->Next();
 628     }
 629     return NULL;
 630 }
 631
 632 void wxImage::InitStandardHandlers()
 633 {
 634   AddHandler( new wxBMPHandler );
 635 }
 636
 637 void wxImage::CleanUpHandlers()
 638 {
 639     wxNode *node = sm_handlers.First();
 640     while (node)
 641     {
 642         wxImageHandler *handler = (wxImageHandler *)node->Data();
 643         wxNode *next = node->Next();
 644         delete handler;
 645         delete node;
 646         node = next;
 647     }
 648 }
 649
 650 //-----------------------------------------------------------------------------
 651 // wxImageHandler
 652 //-----------------------------------------------------------------------------
 653
 654 #if !USE_SHARED_LIBRARIES
 655 IMPLEMENT_ABSTRACT_CLASS(wxImageHandler,wxObject)
 656 #endif
 657
 658 #if wxUSE_STREAMS
 659 bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream), bool WXUNUSED(verbose) )
 660 {
 661     return FALSE;
 662 }
 663
 664 bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), bool WXUNUSED(verbose) )
 665 {
 666     return FALSE;
 667 }
 668
 669 bool wxImageHandler::CanRead( const wxString& name )
 670 {
 671 #if wxUSE_STREAMS
 672     if (wxFileExists(name))
 673     {
 674         wxFileInputStream stream(name);
 675         return CanRead(stream);
 676     }
 677
 678     else {
 679         wxLogError( wxT("Can't check image format of file '%s': file does not exist."), name.c_str() );
 680
 681         return FALSE;
 682     }
 683 #else // !wxUSE_STREAMS
 684     return FALSE;
 685 #endif // wxUSE_STREAMS
 686 }
 687
 688
 689
 690 #endif // wxUSE_STREAMS
 691
 692 //-----------------------------------------------------------------------------
 693 // MSW conversion routines
 694 //-----------------------------------------------------------------------------
 695
 696 #ifdef __WXMSW__
 697
 698 wxBitmap wxImage::ConvertToBitmap() const
 699 {
 700     if ( !Ok() )
 701         return wxNullBitmap;
 702
 703     // sizeLimit is the MS upper limit for the DIB size
 704 #ifdef  WIN32
 705     int sizeLimit = 1024*768*3;
 706 #else
 707     int sizeLimit = 0x7fff ;
 708 #endif
 709
 710     // width and height of the device-dependent bitmap
 711     int width = GetWidth();
 712     int bmpHeight = GetHeight();
 713
 714     // calc the number of bytes per scanline and padding
 715     int bytePerLine = width*3;
 716     int sizeDWORD = sizeof( DWORD );
 717     int lineBoundary = bytePerLine % sizeDWORD;
 718     int padding = 0;
 719     if( lineBoundary > 0 )
 720     {
 721         padding = sizeDWORD - lineBoundary;
 722         bytePerLine += padding;
 723     }
 724     // calc the number of DIBs and heights of DIBs
 725     int numDIB = 1;
 726     int hRemain = 0;
 727     int height = sizeLimit/bytePerLine;
 728     if( height >= bmpHeight )
 729         height = bmpHeight;
 730     else
 731     {
 732         numDIB =  bmpHeight / height;
 733         hRemain = bmpHeight % height;
 734         if( hRemain >0 )  numDIB++;
 735     }
 736
 737     // set bitmap parameters
 738     wxBitmap bitmap;
 739     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
 740     bitmap.SetWidth( width );
 741     bitmap.SetHeight( bmpHeight );
 742     bitmap.SetDepth( wxDisplayDepth() );
 743
 744     // create a DIB header
 745     int headersize = sizeof(BITMAPINFOHEADER);
 746     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 747     wxCHECK_MSG( lpDIBh, bitmap, wxT("could not allocate memory for DIB header") );
 748     // Fill in the DIB header
 749     lpDIBh->bmiHeader.biSize = headersize;
 750     lpDIBh->bmiHeader.biWidth = (DWORD)width;
 751     lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 752     lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 753     //   the general formula for biSizeImage:
 754     //      ( ( ( ((DWORD)width*24) +31 ) & ~31 ) >> 3 ) * height;
 755     lpDIBh->bmiHeader.biPlanes = 1;
 756     lpDIBh->bmiHeader.biBitCount = 24;
 757     lpDIBh->bmiHeader.biCompression = BI_RGB;
 758     lpDIBh->bmiHeader.biClrUsed = 0;
 759     // These seem not really needed for our purpose here.
 760     lpDIBh->bmiHeader.biClrImportant = 0;
 761     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 762     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
 763     // memory for DIB data
 764     unsigned char *lpBits;
 765     lpBits = (unsigned char *)malloc( lpDIBh->bmiHeader.biSizeImage );
 766     if( !lpBits )
 767     {
 768         wxFAIL_MSG( wxT("could not allocate memory for DIB") );
 769         free( lpDIBh );
 770         return bitmap;
 771     }
 772
 773     // create and set the device-dependent bitmap
 774     HDC hdc = ::GetDC(NULL);
 775     HDC memdc = ::CreateCompatibleDC( hdc );
 776     HBITMAP hbitmap;
 777     hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight );
 778     ::SelectObject( memdc, hbitmap);
 779
 780     // copy image data into DIB data and then into DDB (in a loop)
 781     unsigned char *data = GetData();
 782     int i, j, n;
 783     int origin = 0;
 784     unsigned char *ptdata = data;
 785     unsigned char *ptbits;
 786
 787     for( n=0; n<numDIB; n++ )
 788     {
 789         if( numDIB > 1 && n == numDIB-1 && hRemain > 0 )
 790         {
 791             // redefine height and size of the (possibly) last smaller DIB
 792             // memory is not reallocated
 793             height = hRemain;
 794             lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 795             lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 796         }
 797         ptbits = lpBits;
 798
 799         for( j=0; j<height; j++ )
 800         {
 801             for( i=0; i<width; i++ )
 802             {
 803                 *(ptbits++) = *(ptdata+2);
 804                 *(ptbits++) = *(ptdata+1);
 805                 *(ptbits++) = *(ptdata  );
 806                 ptdata += 3;
 807             }
 808             for( i=0; i< padding; i++ )   *(ptbits++) = 0;
 809         }
 810         ::StretchDIBits( memdc, 0, origin, width, height,\
 811             0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
 812         origin += height;
 813         // if numDIB = 1,  lines below can also be used
 814         //    hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
 815         // The above line is equivalent to the following two lines.
 816         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
 817         //    ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
 818         // or the following lines
 819         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
 820         //    HDC memdc = ::CreateCompatibleDC( hdc );
 821         //    ::SelectObject( memdc, hbitmap);
 822         //    ::SetDIBitsToDevice( memdc, 0, 0, width, height,
 823         //            0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
 824         //    ::SelectObject( memdc, 0 );
 825         //    ::DeleteDC( memdc );
 826     }
 827     bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
 828
 829     // similarly, created an mono-bitmap for the possible mask
 830     if( HasMask() )
 831     {
 832         hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL );
 833         ::SelectObject( memdc, hbitmap);
 834         if( numDIB == 1 )   height = bmpHeight;
 835         else                height = sizeLimit/bytePerLine;
 836         lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 837         lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 838         origin = 0;
 839         unsigned char r = GetMaskRed();
 840         unsigned char g = GetMaskGreen();
 841         unsigned char b = GetMaskBlue();
 842         unsigned char zero = 0, one = 255;
 843         ptdata = data;
 844         for( n=0; n<numDIB; n++ )
 845         {
 846             if( numDIB > 1 && n == numDIB - 1 && hRemain > 0 )
 847             {
 848                 // redefine height and size of the (possibly) last smaller DIB
 849                 // memory is not reallocated
 850                 height = hRemain;
 851                 lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 852                 lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 853             }
 854             ptbits = lpBits;
 855             for( int j=0; j<height; j++ )
 856             {
 857                 for(i=0; i<width; i++ )
 858                 {
 859                     if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
 860                     {
 861                         *(ptbits++) = one;
 862                         *(ptbits++) = one;
 863                         *(ptbits++) = one;
 864                     }
 865                     else
 866                     {
 867                         *(ptbits++) = zero;
 868                         *(ptbits++) = zero;
 869                         *(ptbits++) = zero;
 870                     }
 871                 }
 872                 for( i=0; i< padding; i++ )   *(ptbits++) = zero;
 873             }
 874             ::StretchDIBits( memdc, 0, origin, width, height,\
 875                 0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
 876             origin += height;
 877         }
 878         // create a wxMask object
 879         wxMask *mask = new wxMask();
 880         mask->SetMaskBitmap( (WXHBITMAP) hbitmap );
 881         bitmap.SetMask( mask );
 882         // It will be deleted when the wxBitmap object is deleted (as of 01/1999)
 883         /* The following can also be used but is slow to run
 884         wxColour colour( GetMaskRed(), GetMaskGreen(), GetMaskBlue());
 885         wxMask *mask = new wxMask( bitmap, colour );
 886         bitmap.SetMask( mask );
 887         */
 888     }
 889
 890     // free allocated resources
 891     ::SelectObject( memdc, 0 );
 892     ::DeleteDC( memdc );
 893     ::ReleaseDC(NULL, hdc);
 894     free(lpDIBh);
 895     free(lpBits);
 896
 897     // check the wxBitmap object
 898     if( bitmap.GetHBITMAP() )
 899         bitmap.SetOk( TRUE );
 900     else
 901         bitmap.SetOk( FALSE );
 902
 903     return bitmap;
 904 }
 905
 906 wxImage::wxImage( const wxBitmap &bitmap )
 907 {
 908     // check the bitmap
 909     if( !bitmap.Ok() )
 910     {
 911         wxFAIL_MSG( wxT("invalid bitmap") );
 912         return;
 913     }
 914
 915     // create an wxImage object
 916     int width = bitmap.GetWidth();
 917     int height = bitmap.GetHeight();
 918     Create( width, height );
 919     unsigned char *data = GetData();
 920     if( !data )
 921     {
 922         wxFAIL_MSG( wxT("could not allocate data for image") );
 923         return;
 924     }
 925
 926     // calc the number of bytes per scanline and padding in the DIB
 927     int bytePerLine = width*3;
 928     int sizeDWORD = sizeof( DWORD );
 929     int lineBoundary =  bytePerLine % sizeDWORD;
 930     int padding = 0;
 931     if( lineBoundary > 0 )
 932     {
 933         padding = sizeDWORD - lineBoundary;
 934         bytePerLine += padding;
 935     }
 936
 937     // create a DIB header
 938     int headersize = sizeof(BITMAPINFOHEADER);
 939     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 940     if( !lpDIBh )
 941     {
 942         wxFAIL_MSG( wxT("could not allocate data for DIB header") );
 943         free( data );
 944         return;
 945     }
 946     // Fill in the DIB header
 947     lpDIBh->bmiHeader.biSize = headersize;
 948     lpDIBh->bmiHeader.biWidth = width;
 949     lpDIBh->bmiHeader.biHeight = -height;
 950     lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
 951     lpDIBh->bmiHeader.biPlanes = 1;
 952     lpDIBh->bmiHeader.biBitCount = 24;
 953     lpDIBh->bmiHeader.biCompression = BI_RGB;
 954     lpDIBh->bmiHeader.biClrUsed = 0;
 955     // These seem not really needed for our purpose here.
 956     lpDIBh->bmiHeader.biClrImportant = 0;
 957     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 958     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
 959     // memory for DIB data
 960     unsigned char *lpBits;
 961     lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
 962     if( !lpBits )
 963     {
 964         wxFAIL_MSG( wxT("could not allocate data for DIB") );
 965         free( data );
 966         free( lpDIBh );
 967         return;
 968     }
 969
 970     // copy data from the device-dependent bitmap to the DIB
 971     HDC hdc = ::GetDC(NULL);
 972     HBITMAP hbitmap;
 973     hbitmap = (HBITMAP) bitmap.GetHBITMAP();
 974     ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
 975
 976     // copy DIB data into the wxImage object
 977     int i, j;
 978     unsigned char *ptdata = data;
 979     unsigned char *ptbits = lpBits;
 980     for( i=0; i<height; i++ )
 981     {
 982         for( j=0; j<width; j++ )
 983         {
 984             *(ptdata++) = *(ptbits+2);
 985             *(ptdata++) = *(ptbits+1);
 986             *(ptdata++) = *(ptbits  );
 987             ptbits += 3;
 988         }
 989         ptbits += padding;
 990     }
 991
 992     // similarly, set data according to the possible mask bitmap
 993     if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
 994     {
 995         hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
 996         // memory DC created, color set, data copied, and memory DC deleted
 997         HDC memdc = ::CreateCompatibleDC( hdc );
 998         ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
 999         ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
1000         ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
1001         ::DeleteDC( memdc );
1002         // background color set to RGB(16,16,16) in consistent with wxGTK
1003         unsigned char r=16, g=16, b=16;
1004         ptdata = data;
1005         ptbits = lpBits;
1006         for( i=0; i<height; i++ )
1007         {
1008             for( j=0; j<width; j++ )
1009             {
1010                 if( *ptbits != 0 )
1011                     ptdata += 3;
1012                 else
1013                 {
1014                     *(ptdata++)  = r;
1015                     *(ptdata++)  = g;
1016                     *(ptdata++)  = b;
1017                 }
1018                 ptbits += 3;
1019             }
1020             ptbits += padding;
1021         }
1022         SetMaskColour( r, g, b );
1023         SetMask( TRUE );
1024     }
1025     else
1026     {
1027         SetMask( FALSE );
1028     }
1029     // free allocated resources
1030     ::ReleaseDC(NULL, hdc);
1031     free(lpDIBh);
1032     free(lpBits);
1033 }
1034
1035 #endif
1036
1037 #ifdef __WXMAC__
1038
1039 #include <PictUtils.h>
1040
1041 extern CTabHandle wxMacCreateColorTable( int numColors ) ;
1042 extern void wxMacDestroyColorTable( CTabHandle colors ) ;
1043 extern void wxMacSetColorTableEntry( CTabHandle newColors , int index , int red , int green ,  int blue ) ;
1044 extern GWorldPtr wxMacCreateGWorld( int height , int width , int depth ) ;
1045 extern void wxMacDestroyGWorld( GWorldPtr gw ) ;
1046
1047 wxBitmap wxImage::ConvertToBitmap() const
1048 {
1049     // width and height of the device-dependent bitmap
1050     int width = GetWidth();
1051     int height = GetHeight();
1052
1053     // Create picture
1054
1055     wxBitmap bitmap( width , height , wxDisplayDepth() ) ;
1056
1057     // Create mask
1058
1059     if (HasMask())
1060     {
1061         /*
1062         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1063
1064         mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1065
1066         wxMask *mask = new wxMask();
1067         mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1068
1069         bitmap.SetMask( mask );
1070        */
1071     }
1072
1073     // Render
1074
1075     int r_mask = GetMaskRed();
1076     int g_mask = GetMaskGreen();
1077     int b_mask = GetMaskBlue();
1078
1079                 CGrafPtr        origPort ;
1080                 GDHandle        origDevice ;
1081
1082                 GetGWorld( &origPort , &origDevice ) ;
1083                 SetGWorld( bitmap.GetHBITMAP() , NULL ) ;
1084
1085     register unsigned char* data = GetData();
1086
1087     int index = 0;
1088     for (int y = 0; y < height; y++)
1089     {
1090 #if 0
1091         unsigned char lastr = 0 ;
1092         unsigned char lastg = 0 ;
1093         unsigned char lastb = 0 ;
1094         RGBColor lastcolor ;
1095
1096                 MoveTo( 0 , y ) ;
1097         for (int x = 0; x < width; x++)
1098         {
1099                 unsigned char r = data[index++];
1100                 unsigned char g = data[index++];
1101                 unsigned char b = data[index++];
1102
1103                         if ( r != lastr || g != lastg || b != lastb )
1104                         {
1105                         lastcolor.red = ( lastr  << 8 ) + lastr ;
1106                         lastcolor.green = ( lastg << 8 ) + lastg ;
1107                         lastcolor.blue = ( lastb << 8 ) + lastb ;
1108                                 RGBForeColor( &lastcolor ) ;
1109                                 LineTo( x , y ) ;
1110                                 lastr = r ;
1111                                 lastg = g ;
1112                                 lastb = b ;
1113                         }
1114         } // for width
1115                 lastcolor.red = ( lastr  << 8 ) + lastr ;
1116                 lastcolor.green = ( lastg << 8 ) + lastg ;
1117                 lastcolor.blue = ( lastb << 8 ) + lastb ;
1118                 RGBForeColor( &lastcolor ) ;
1119         LineTo( width - 1 , y ) ;
1120 #else
1121         for (int x = 0; x < width; x++)
1122         {
1123                 unsigned char r = data[index++];
1124                 unsigned char g = data[index++];
1125                 unsigned char b = data[index++];
1126                 RGBColor color ;
1127                 color.red = ( r  << 8 ) + r ;
1128                 color.green = ( g << 8 ) + g ;
1129                 color.blue = ( b << 8 ) + b ;
1130                 SetCPixel( x , y , &color ) ;
1131         }
1132 #endif
1133     }  // for height
1134
1135         SetGWorld( origPort , origDevice ) ;
1136
1137     return bitmap;
1138
1139 }
1140
1141 wxImage::wxImage( const wxBitmap &bitmap )
1142 {
1143     // check the bitmap
1144     if( !bitmap.Ok() )
1145     {
1146         wxFAIL_MSG( "invalid bitmap" );
1147         return;
1148     }
1149
1150     // create an wxImage object
1151     int width = bitmap.GetWidth();
1152     int height = bitmap.GetHeight();
1153     Create( width, height );
1154     /*
1155     unsigned char *data = GetData();
1156     if( !data )
1157     {
1158         wxFAIL_MSG( "could not allocate data for image" );
1159         return;
1160     }
1161
1162     // calc the number of bytes per scanline and padding in the DIB
1163     int bytePerLine = width*3;
1164     int sizeDWORD = sizeof( DWORD );
1165     div_t lineBoundary = div( bytePerLine, sizeDWORD );
1166     int padding = 0;
1167     if( lineBoundary.rem > 0 )
1168     {
1169         padding = sizeDWORD - lineBoundary.rem;
1170         bytePerLine += padding;
1171     }
1172
1173     // create a DIB header
1174     int headersize = sizeof(BITMAPINFOHEADER);
1175     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
1176     if( !lpDIBh )
1177     {
1178         wxFAIL_MSG( "could not allocate data for DIB header" );
1179         free( data );
1180         return;
1181     }
1182     // Fill in the DIB header
1183     lpDIBh->bmiHeader.biSize = headersize;
1184     lpDIBh->bmiHeader.biWidth = width;
1185     lpDIBh->bmiHeader.biHeight = -height;
1186     lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
1187     lpDIBh->bmiHeader.biPlanes = 1;
1188     lpDIBh->bmiHeader.biBitCount = 24;
1189     lpDIBh->bmiHeader.biCompression = BI_RGB;
1190     lpDIBh->bmiHeader.biClrUsed = 0;
1191     // These seem not really needed for our purpose here.
1192     lpDIBh->bmiHeader.biClrImportant = 0;
1193     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
1194     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
1195     // memory for DIB data
1196     unsigned char *lpBits;
1197     lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
1198     if( !lpBits )
1199     {
1200         wxFAIL_MSG( "could not allocate data for DIB" );
1201         free( data );
1202         free( lpDIBh );
1203         return;
1204     }
1205
1206     // copy data from the device-dependent bitmap to the DIB
1207     HDC hdc = ::GetDC(NULL);
1208     HBITMAP hbitmap;
1209     hbitmap = (HBITMAP) bitmap.GetHBITMAP();
1210     ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
1211
1212     // copy DIB data into the wxImage object
1213     int i, j;
1214     unsigned char *ptdata = data;
1215     unsigned char *ptbits = lpBits;
1216     for( i=0; i<height; i++ )
1217     {
1218         for( j=0; j<width; j++ )
1219         {
1220             *(ptdata++) = *(ptbits+2);
1221             *(ptdata++) = *(ptbits+1);
1222             *(ptdata++) = *(ptbits  );
1223             ptbits += 3;
1224         }
1225         ptbits += padding;
1226     }
1227
1228     // similarly, set data according to the possible mask bitmap
1229     if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
1230     {
1231         hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
1232         // memory DC created, color set, data copied, and memory DC deleted
1233         HDC memdc = ::CreateCompatibleDC( hdc );
1234         ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
1235         ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
1236         ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
1237         ::DeleteDC( memdc );
1238         // background color set to RGB(16,16,16) in consistent with wxGTK
1239         unsigned char r=16, g=16, b=16;
1240         ptdata = data;
1241         ptbits = lpBits;
1242         for( i=0; i<height; i++ )
1243         {
1244             for( j=0; j<width; j++ )
1245             {
1246                 if( *ptbits != 0 )
1247                     ptdata += 3;
1248                 else
1249                 {
1250                     *(ptdata++)  = r;
1251                     *(ptdata++)  = g;
1252                     *(ptdata++)  = b;
1253                 }
1254                 ptbits += 3;
1255             }
1256             ptbits += padding;
1257         }
1258         SetMaskColour( r, g, b );
1259         SetMask( TRUE );
1260     }
1261     else
1262     {
1263         SetMask( FALSE );
1264     }
1265     // free allocated resources
1266     ::ReleaseDC(NULL, hdc);
1267     free(lpDIBh);
1268     free(lpBits);
1269     */
1270 }
1271
1272 #endif
1273
1274 //-----------------------------------------------------------------------------
1275 // GTK conversion routines
1276 //-----------------------------------------------------------------------------
1277
1278 #ifdef __WXGTK__
1279
1280 #include "gtk/gtk.h"
1281 #include "gdk/gdk.h"
1282 #include "gdk/gdkx.h"
1283
1284 #if (GTK_MINOR_VERSION > 0)
1285 #include "gdk/gdkrgb.h"
1286 #endif
1287
1288 wxBitmap wxImage::ConvertToBitmap() const
1289 {
1290     wxBitmap bitmap;
1291
1292     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
1293
1294     int width = GetWidth();
1295     int height = GetHeight();
1296
1297     bitmap.SetHeight( height );
1298     bitmap.SetWidth( width );
1299
1300     bitmap.SetPixmap( gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, -1 ) );
1301
1302      // Retrieve depth
1303
1304     GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
1305     if (visual == NULL) visual = gdk_visual_get_system();
1306     int bpp = visual->depth;
1307
1308     bitmap.SetDepth( bpp );
1309
1310     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1311     if (bpp < 8) bpp = 8;
1312
1313 #if (GTK_MINOR_VERSION > 0)
1314
1315     if (!HasMask() && (bpp > 8))
1316     {
1317         static bool s_hasInitialized = FALSE;
1318
1319         if (!s_hasInitialized)
1320         {
1321             gdk_rgb_init();
1322             s_hasInitialized = TRUE;
1323         }
1324
1325         GdkGC *gc = gdk_gc_new( bitmap.GetPixmap() );
1326
1327         gdk_draw_rgb_image( bitmap.GetPixmap(),
1328                             gc,
1329                             0, 0,
1330                             width, height,
1331                             GDK_RGB_DITHER_NONE,
1332                             GetData(),
1333                             width*3 );
1334
1335         gdk_gc_unref( gc );
1336
1337         return bitmap;
1338     }
1339
1340 #endif
1341
1342     // Create picture image
1343
1344     GdkImage *data_image =
1345         gdk_image_new( GDK_IMAGE_FASTEST, gdk_visual_get_system(), width, height );
1346
1347     // Create mask image
1348
1349     GdkImage *mask_image = (GdkImage*) NULL;
1350
1351     if (HasMask())
1352     {
1353         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1354
1355         mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1356
1357         wxMask *mask = new wxMask();
1358         mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1359
1360         bitmap.SetMask( mask );
1361     }
1362
1363     // Render
1364
1365     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1366     byte_order b_o = RGB;
1367
1368     if (bpp >= 24)
1369     {
1370         GdkVisual *visual = gdk_visual_get_system();
1371         if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
1372         else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RGB;
1373         else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
1374         else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
1375         else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
1376         else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
1377     }
1378
1379     int r_mask = GetMaskRed();
1380     int g_mask = GetMaskGreen();
1381     int b_mask = GetMaskBlue();
1382
1383     unsigned char* data = GetData();
1384
1385     int index = 0;
1386     for (int y = 0; y < height; y++)
1387     {
1388         for (int x = 0; x < width; x++)
1389         {
1390             int r = data[index];
1391             index++;
1392             int g = data[index];
1393             index++;
1394             int b = data[index];
1395             index++;
1396
1397             if (HasMask())
1398             {
1399                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1400                     gdk_image_put_pixel( mask_image, x, y, 1 );
1401                 else
1402                     gdk_image_put_pixel( mask_image, x, y, 0 );
1403             }
1404
1405             if (HasMask())
1406             {
1407                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1408                     gdk_image_put_pixel( mask_image, x, y, 1 );
1409                 else
1410                     gdk_image_put_pixel( mask_image, x, y, 0 );
1411             }
1412
1413             switch (bpp)
1414             {
1415             case 8:
1416                 {
1417                     int pixel = -1;
1418                     if (wxTheApp->m_colorCube)
1419                     {
1420                         pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1421                     }
1422                     else
1423                     {
1424                         GdkColormap *cmap = gtk_widget_get_default_colormap();
1425                         GdkColor *colors = cmap->colors;
1426                         int max = 3 * (65536);
1427
1428                         for (int i = 0; i < cmap->size; i++)
1429                         {
1430                             int rdiff = (r << 8) - colors[i].red;
1431                             int gdiff = (g << 8) - colors[i].green;
1432                             int bdiff = (b << 8) - colors[i].blue;
1433                             int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
1434                             if (sum < max) { pixel = i; max = sum; }
1435                         }
1436                     }
1437
1438                     gdk_image_put_pixel( data_image, x, y, pixel );
1439
1440                     break;
1441                 }
1442             case 15:
1443                 {
1444                     guint32 pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1445                     gdk_image_put_pixel( data_image, x, y, pixel );
1446                     break;
1447                 }
1448             case 16:
1449                 {
1450                     guint32 pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1451                     gdk_image_put_pixel( data_image, x, y, pixel );
1452                     break;
1453                 }
1454             case 32:
1455             case 24:
1456                 {
1457                     guint32 pixel = 0;
1458                     switch (b_o)
1459                     {
1460                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1461                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1462                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1463                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1464                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1465                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1466                     }
1467                     gdk_image_put_pixel( data_image, x, y, pixel );
1468                 }
1469             default: break;
1470             }
1471         } // for
1472     }  // for
1473
1474     // Blit picture
1475
1476     GdkGC *data_gc = gdk_gc_new( bitmap.GetPixmap() );
1477
1478     gdk_draw_image( bitmap.GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
1479
1480     gdk_image_destroy( data_image );
1481     gdk_gc_unref( data_gc );
1482
1483     // Blit mask
1484
1485     if (HasMask())
1486     {
1487         GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1488
1489         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1490
1491         gdk_image_destroy( mask_image );
1492         gdk_gc_unref( mask_gc );
1493     }
1494
1495     return bitmap;
1496 }
1497
1498 wxImage::wxImage( const wxBitmap &bitmap )
1499 {
1500     wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1501
1502     GdkImage *gdk_image = (GdkImage*) NULL;
1503     if (bitmap.GetPixmap())
1504     {
1505         gdk_image = gdk_image_get( bitmap.GetPixmap(),
1506             0, 0,
1507             bitmap.GetWidth(), bitmap.GetHeight() );
1508     } else
1509     if (bitmap.GetBitmap())
1510     {
1511         gdk_image = gdk_image_get( bitmap.GetBitmap(),
1512             0, 0,
1513             bitmap.GetWidth(), bitmap.GetHeight() );
1514     } else
1515     {
1516         wxFAIL_MSG( wxT("Ill-formed bitmap") );
1517     }
1518
1519     wxCHECK_RET( gdk_image, wxT("couldn't create image") );
1520
1521     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1522     char unsigned *data = GetData();
1523
1524     if (!data)
1525     {
1526         gdk_image_destroy( gdk_image );
1527         wxFAIL_MSG( wxT("couldn't create image") );
1528         return;
1529     }
1530
1531     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1532     if (bitmap.GetMask())
1533     {
1534         gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1535             0, 0,
1536             bitmap.GetWidth(), bitmap.GetHeight() );
1537
1538         SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1539     }
1540
1541     GdkVisual *visual = (GdkVisual*) NULL;
1542     if (bitmap.GetPixmap())
1543         visual = gdk_window_get_visual( bitmap.GetPixmap() );
1544     else
1545         visual = gdk_window_get_visual( bitmap.GetBitmap() );
1546
1547     if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent );
1548     int bpp = visual->depth;
1549     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1550
1551     GdkColormap *cmap = gtk_widget_get_default_colormap();
1552
1553     long pos = 0;
1554     for (int j = 0; j < bitmap.GetHeight(); j++)
1555     {
1556         for (int i = 0; i < bitmap.GetWidth(); i++)
1557         {
1558             wxInt32 pixel = gdk_image_get_pixel( gdk_image, i, j );
1559             // pixel = wxINT32_SWAP_ON_BE( pixel );
1560             if (bpp <= 8)
1561             {
1562                 data[pos] = cmap->colors[pixel].red >> 8;
1563                 data[pos+1] = cmap->colors[pixel].green >> 8;
1564                 data[pos+2] = cmap->colors[pixel].blue >> 8;
1565             } else if (bpp == 15)
1566             {
1567                 data[pos] = (pixel >> 7) & 0xf8;
1568                 data[pos+1] = (pixel >> 2) & 0xf8;
1569                 data[pos+2] = (pixel << 3) & 0xf8;
1570             } else if (bpp == 16)
1571             {
1572                 data[pos] = (pixel >> 8) & 0xf8;
1573                 data[pos+1] = (pixel >> 3) & 0xfc;
1574                 data[pos+2] = (pixel << 3) & 0xf8;
1575             } else
1576             {
1577                 data[pos] = (pixel >> 16) & 0xff;
1578                 data[pos+1] = (pixel >> 8) & 0xff;
1579                 data[pos+2] = pixel & 0xff;
1580             }
1581
1582             if (gdk_image_mask)
1583             {
1584                 int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1585                 if (mask_pixel == 0)
1586                 {
1587                     data[pos] = 16;
1588                     data[pos+1] = 16;
1589                     data[pos+2] = 16;
1590                 }
1591             }
1592
1593             pos += 3;
1594         }
1595     }
1596
1597     gdk_image_destroy( gdk_image );
1598     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1599 }
1600
1601 #endif
1602
1603 //-----------------------------------------------------------------------------
1604 // Motif conversion routines
1605 //-----------------------------------------------------------------------------
1606
1607 #ifdef __WXMOTIF__
1608
1609 #include <Xm/Xm.h>
1610 #include "wx/utils.h"
1611 #include <math.h>
1612
1613 wxBitmap wxImage::ConvertToBitmap() const
1614 {
1615     wxBitmap bitmap;
1616
1617     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
1618
1619     int width = GetWidth();
1620     int height = GetHeight();
1621
1622     bitmap.SetHeight( height );
1623     bitmap.SetWidth( width );
1624
1625     Display *dpy = (Display*) wxGetDisplay();
1626     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1627     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1628
1629     // Create image
1630
1631     XImage *data_image = XCreateImage( dpy, vis, bpp, ZPixmap, 0, 0, width, height, 32, 0 );
1632     data_image->data = (char*) malloc( data_image->bytes_per_line * data_image->height );
1633
1634     bitmap.Create( width, height, bpp );
1635
1636     /*
1637     // Create mask
1638
1639       GdkImage *mask_image = (GdkImage*) NULL;
1640
1641         if (HasMask())
1642         {
1643         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1644
1645           mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1646
1647             wxMask *mask = new wxMask();
1648             mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1649
1650               bitmap.SetMask( mask );
1651               }
1652     */
1653
1654     // Retrieve depth info
1655
1656     XVisualInfo vinfo_template;
1657     XVisualInfo *vi;
1658
1659     vinfo_template.visual = vis;
1660     vinfo_template.visualid = XVisualIDFromVisual( vis );
1661     vinfo_template.depth = bpp;
1662     int nitem = 0;
1663
1664     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1665
1666     wxCHECK_MSG( vi, wxNullBitmap, wxT("no visual") );
1667
1668     XFree( vi );
1669
1670     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1671     if (bpp < 8) bpp = 8;
1672
1673     // Render
1674
1675     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1676     byte_order b_o = RGB;
1677
1678     if (bpp >= 24)
1679     {
1680         if ((vi->red_mask > vi->green_mask) && (vi->green_mask > vi->blue_mask))      b_o = RGB;
1681         else if ((vi->red_mask > vi->blue_mask) && (vi->blue_mask > vi->green_mask))  b_o = RGB;
1682         else if ((vi->blue_mask > vi->red_mask) && (vi->red_mask > vi->green_mask))   b_o = BRG;
1683         else if ((vi->blue_mask > vi->green_mask) && (vi->green_mask > vi->red_mask)) b_o = BGR;
1684         else if ((vi->green_mask > vi->red_mask) && (vi->red_mask > vi->blue_mask))   b_o = GRB;
1685         else if ((vi->green_mask > vi->blue_mask) && (vi->blue_mask > vi->red_mask))  b_o = GBR;
1686     }
1687
1688     /*
1689     int r_mask = GetMaskRed();
1690     int g_mask = GetMaskGreen();
1691     int b_mask = GetMaskBlue();
1692     */
1693
1694     XColor colors[256];
1695     if (bpp == 8)
1696     {
1697         Colormap cmap = (Colormap) wxTheApp->GetMainColormap( dpy );
1698
1699         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1700         XQueryColors( dpy, cmap, colors, 256 );
1701     }
1702
1703     unsigned char* data = GetData();
1704
1705     int index = 0;
1706     for (int y = 0; y < height; y++)
1707     {
1708         for (int x = 0; x < width; x++)
1709         {
1710             int r = data[index];
1711             index++;
1712             int g = data[index];
1713             index++;
1714             int b = data[index];
1715             index++;
1716
1717             /*
1718             if (HasMask())
1719             {
1720             if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1721             gdk_image_put_pixel( mask_image, x, y, 1 );
1722             else
1723             gdk_image_put_pixel( mask_image, x, y, 0 );
1724             }
1725             */
1726
1727             switch (bpp)
1728             {
1729             case 8:
1730                 {
1731                     int pixel = -1;
1732                     /*
1733                     if (wxTheApp->m_colorCube)
1734                     {
1735                     pixel = wxTheApp->m_colorCube
1736                     [ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1737                     }
1738                     else
1739                     {
1740                     */
1741                     int max = 3 * (65536);
1742                     for (int i = 0; i < 256; i++)
1743                     {
1744                         int rdiff = (r << 8) - colors[i].red;
1745                         int gdiff = (g << 8) - colors[i].green;
1746                         int bdiff = (b << 8) - colors[i].blue;
1747                         int sum = abs (rdiff) + abs (gdiff) + abs (bdiff);
1748                         if (sum < max) { pixel = i; max = sum; }
1749                     }
1750                     /*
1751                     }
1752                     */
1753                     XPutPixel( data_image, x, y, pixel );
1754                     break;
1755                 }
1756             case 15:
1757                 {
1758                     int pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1759                     XPutPixel( data_image, x, y, pixel );
1760                     break;
1761                 }
1762             case 16:
1763                 {
1764                     int pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1765                     XPutPixel( data_image, x, y, pixel );
1766                     break;
1767                 }
1768             case 32:
1769             case 24:
1770                 {
1771                     int pixel = 0;
1772                     switch (b_o)
1773                     {
1774                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1775                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1776                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1777                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1778                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1779                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1780                     }
1781                     XPutPixel( data_image, x, y, pixel );
1782                 }
1783             default: break;
1784             }
1785         } // for
1786     }  // for
1787
1788     // Blit picture
1789
1790     XGCValues gcvalues;
1791     gcvalues.foreground = BlackPixel( dpy, DefaultScreen( dpy ) );
1792     GC gc = XCreateGC( dpy, RootWindow ( dpy, DefaultScreen(dpy) ), GCForeground, &gcvalues );
1793     XPutImage( dpy, (Drawable)bitmap.GetPixmap(), gc, data_image, 0, 0, 0, 0, width, height );
1794
1795     XDestroyImage( data_image );
1796     XFreeGC( dpy, gc );
1797
1798     /*
1799     // Blit mask
1800
1801       if (HasMask())
1802       {
1803       GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1804
1805         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1806
1807           gdk_image_destroy( mask_image );
1808           gdk_gc_unref( mask_gc );
1809           }
1810     */
1811
1812     return bitmap;
1813 }
1814
1815 wxImage::wxImage( const wxBitmap &bitmap )
1816 {
1817     wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1818
1819     Display *dpy = (Display*) wxGetDisplay();
1820     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1821     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1822
1823     XImage *ximage = XGetImage( dpy,
1824         (Drawable)bitmap.GetPixmap(),
1825         0, 0,
1826         bitmap.GetWidth(), bitmap.GetHeight(),
1827         AllPlanes, ZPixmap );
1828
1829     wxCHECK_RET( ximage, wxT("couldn't create image") );
1830
1831     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1832     char unsigned *data = GetData();
1833
1834     if (!data)
1835     {
1836         XDestroyImage( ximage );
1837         wxFAIL_MSG( wxT("couldn't create image") );
1838         return;
1839     }
1840
1841     /*
1842     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1843     if (bitmap.GetMask())
1844     {
1845     gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1846     0, 0,
1847     bitmap.GetWidth(), bitmap.GetHeight() );
1848
1849       SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1850       }
1851     */
1852
1853     // Retrieve depth info
1854
1855     XVisualInfo vinfo_template;
1856     XVisualInfo *vi;
1857
1858     vinfo_template.visual = vis;
1859     vinfo_template.visualid = XVisualIDFromVisual( vis );
1860     vinfo_template.depth = bpp;
1861     int nitem = 0;
1862
1863     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1864
1865     wxCHECK_RET( vi, wxT("no visual") );
1866
1867     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1868
1869     XFree( vi );
1870
1871     XColor colors[256];
1872     if (bpp == 8)
1873     {
1874         Colormap cmap = (Colormap)wxTheApp->GetMainColormap( dpy );
1875
1876         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1877         XQueryColors( dpy, cmap, colors, 256 );
1878     }
1879
1880     long pos = 0;
1881     for (int j = 0; j < bitmap.GetHeight(); j++)
1882     {
1883         for (int i = 0; i < bitmap.GetWidth(); i++)
1884         {
1885             int pixel = XGetPixel( ximage, i, j );
1886             if (bpp <= 8)
1887             {
1888                 data[pos] = colors[pixel].red >> 8;
1889                 data[pos+1] = colors[pixel].green >> 8;
1890                 data[pos+2] = colors[pixel].blue >> 8;
1891             } else if (bpp == 15)
1892             {
1893                 data[pos] = (pixel >> 7) & 0xf8;
1894                 data[pos+1] = (pixel >> 2) & 0xf8;
1895                 data[pos+2] = (pixel << 3) & 0xf8;
1896             } else if (bpp == 16)
1897             {
1898                 data[pos] = (pixel >> 8) & 0xf8;
1899                 data[pos+1] = (pixel >> 3) & 0xfc;
1900                 data[pos+2] = (pixel << 3) & 0xf8;
1901             } else
1902             {
1903                 data[pos] = (pixel >> 16) & 0xff;
1904                 data[pos+1] = (pixel >> 8) & 0xff;
1905                 data[pos+2] = pixel & 0xff;
1906             }
1907
1908             /*
1909             if (gdk_image_mask)
1910             {
1911             int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1912             if (mask_pixel == 0)
1913             {
1914             data[pos] = 16;
1915             data[pos+1] = 16;
1916             data[pos+2] = 16;
1917             }
1918             }
1919             */
1920
1921             pos += 3;
1922         }
1923     }
1924
1925     XDestroyImage( ximage );
1926     /*
1927     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1928     */
1929 }
1930 #endif
1931
1932 #ifdef __WXPM__
1933 // OS/2 Presentation manager conversion routings
1934
1935 wxBitmap wxImage::ConvertToBitmap() const
1936 {
1937     if ( !Ok() )
1938         return wxNullBitmap;
1939     wxBitmap bitmap; // remove
1940 // TODO:
1941 /*
1942     int sizeLimit = 1024*768*3;
1943
1944     // width and height of the device-dependent bitmap
1945     int width = GetWidth();
1946     int bmpHeight = GetHeight();
1947
1948     // calc the number of bytes per scanline and padding
1949     int bytePerLine = width*3;
1950     int sizeDWORD = sizeof( DWORD );
1951     int lineBoundary = bytePerLine % sizeDWORD;
1952     int padding = 0;
1953     if( lineBoundary > 0 )
1954     {
1955         padding = sizeDWORD - lineBoundary;
1956         bytePerLine += padding;
1957     }
1958     // calc the number of DIBs and heights of DIBs
1959     int numDIB = 1;
1960     int hRemain = 0;
1961     int height = sizeLimit/bytePerLine;
1962     if( height >= bmpHeight )
1963         height = bmpHeight;
1964     else
1965     {
1966         numDIB =  bmpHeight / height;
1967         hRemain = bmpHeight % height;
1968         if( hRemain >0 )  numDIB++;
1969     }
1970
1971     // set bitmap parameters
1972     wxBitmap bitmap;
1973     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
1974     bitmap.SetWidth( width );
1975     bitmap.SetHeight( bmpHeight );
1976     bitmap.SetDepth( wxDisplayDepth() );
1977
1978     // create a DIB header
1979     int headersize = sizeof(BITMAPINFOHEADER);
1980     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
1981     wxCHECK_MSG( lpDIBh, bitmap, wxT("could not allocate memory for DIB header") );
1982     // Fill in the DIB header
1983     lpDIBh->bmiHeader.biSize = headersize;
1984     lpDIBh->bmiHeader.biWidth = (DWORD)width;
1985     lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
1986     lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
1987     //   the general formula for biSizeImage:
1988     //      ( ( ( ((DWORD)width*24) +31 ) & ~31 ) >> 3 ) * height;
1989     lpDIBh->bmiHeader.biPlanes = 1;
1990     lpDIBh->bmiHeader.biBitCount = 24;
1991     lpDIBh->bmiHeader.biCompression = BI_RGB;
1992     lpDIBh->bmiHeader.biClrUsed = 0;
1993     // These seem not really needed for our purpose here.
1994     lpDIBh->bmiHeader.biClrImportant = 0;
1995     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
1996     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
1997     // memory for DIB data
1998     unsigned char *lpBits;
1999     lpBits = (unsigned char *)malloc( lpDIBh->bmiHeader.biSizeImage );
2000     if( !lpBits )
2001     {
2002         wxFAIL_MSG( wxT("could not allocate memory for DIB") );
2003         free( lpDIBh );
2004         return bitmap;
2005     }
2006
2007     // create and set the device-dependent bitmap
2008     HDC hdc = ::GetDC(NULL);
2009     HDC memdc = ::CreateCompatibleDC( hdc );
2010     HBITMAP hbitmap;
2011     hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight );
2012     ::SelectObject( memdc, hbitmap);
2013
2014     // copy image data into DIB data and then into DDB (in a loop)
2015     unsigned char *data = GetData();
2016     int i, j, n;
2017     int origin = 0;
2018     unsigned char *ptdata = data;
2019     unsigned char *ptbits;
2020
2021     for( n=0; n<numDIB; n++ )
2022     {
2023         if( numDIB > 1 && n == numDIB-1 && hRemain > 0 )
2024         {
2025             // redefine height and size of the (possibly) last smaller DIB
2026             // memory is not reallocated
2027             height = hRemain;
2028             lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
2029             lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
2030         }
2031         ptbits = lpBits;
2032
2033         for( j=0; j<height; j++ )
2034         {
2035             for( i=0; i<width; i++ )
2036             {
2037                 *(ptbits++) = *(ptdata+2);
2038                 *(ptbits++) = *(ptdata+1);
2039                 *(ptbits++) = *(ptdata  );
2040                 ptdata += 3;
2041             }
2042             for( i=0; i< padding; i++ )   *(ptbits++) = 0;
2043         }
2044         ::StretchDIBits( memdc, 0, origin, width, height,\
2045             0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
2046         origin += height;
2047         // if numDIB = 1,  lines below can also be used
2048         //    hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
2049         // The above line is equivalent to the following two lines.
2050         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
2051         //    ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
2052         // or the following lines
2053         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
2054         //    HDC memdc = ::CreateCompatibleDC( hdc );
2055         //    ::SelectObject( memdc, hbitmap);
2056         //    ::SetDIBitsToDevice( memdc, 0, 0, width, height,
2057         //            0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
2058         //    ::SelectObject( memdc, 0 );
2059         //    ::DeleteDC( memdc );
2060     }
2061     bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
2062
2063     // similarly, created an mono-bitmap for the possible mask
2064     if( HasMask() )
2065     {
2066         hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL );
2067         ::SelectObject( memdc, hbitmap);
2068         if( numDIB == 1 )   height = bmpHeight;
2069         else                height = sizeLimit/bytePerLine;
2070         lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
2071         lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
2072         origin = 0;
2073         unsigned char r = GetMaskRed();
2074         unsigned char g = GetMaskGreen();
2075         unsigned char b = GetMaskBlue();
2076         unsigned char zero = 0, one = 255;
2077         ptdata = data;
2078         for( n=0; n<numDIB; n++ )
2079         {
2080             if( numDIB > 1 && n == numDIB - 1 && hRemain > 0 )
2081             {
2082                 // redefine height and size of the (possibly) last smaller DIB
2083                 // memory is not reallocated
2084                 height = hRemain;
2085                 lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
2086                 lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
2087             }
2088             ptbits = lpBits;
2089             for( int j=0; j<height; j++ )
2090             {
2091                 for(i=0; i<width; i++ )
2092                 {
2093                     if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
2094                     {
2095                         *(ptbits++) = one;
2096                         *(ptbits++) = one;
2097                         *(ptbits++) = one;
2098                     }
2099                     else
2100                     {
2101                         *(ptbits++) = zero;
2102                         *(ptbits++) = zero;
2103                         *(ptbits++) = zero;
2104                     }
2105                 }
2106                 for( i=0; i< padding; i++ )   *(ptbits++) = zero;
2107             }
2108             ::StretchDIBits( memdc, 0, origin, width, height,\
2109                 0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
2110             origin += height;
2111         }
2112         // create a wxMask object
2113         wxMask *mask = new wxMask();
2114         mask->SetMaskBitmap( (WXHBITMAP) hbitmap );
2115         bitmap.SetMask( mask );
2116     }
2117
2118     // free allocated resources
2119     ::SelectObject( memdc, 0 );
2120     ::DeleteDC( memdc );
2121     ::ReleaseDC(NULL, hdc);
2122     free(lpDIBh);
2123     free(lpBits);
2124
2125     // check the wxBitmap object
2126     if( bitmap.GetHBITMAP() )
2127         bitmap.SetOk( TRUE );
2128     else
2129         bitmap.SetOk( FALSE );
2130 */
2131     return bitmap;
2132 }
2133
2134 wxImage::wxImage( const wxBitmap &bitmap )
2135 {
2136     // check the bitmap
2137     if( !bitmap.Ok() )
2138     {
2139         wxFAIL_MSG( wxT("invalid bitmap") );
2140         return;
2141     }
2142
2143     // create an wxImage object
2144     int width = bitmap.GetWidth();
2145     int height = bitmap.GetHeight();
2146     Create( width, height );
2147     unsigned char *data = GetData();
2148     if( !data )
2149     {
2150         wxFAIL_MSG( wxT("could not allocate data for image") );
2151         return;
2152     }
2153
2154     // calc the number of bytes per scanline and padding in the DIB
2155     int bytePerLine = width*3;
2156     int sizeDWORD = sizeof( DWORD );
2157     int lineBoundary =  bytePerLine % sizeDWORD;
2158     int padding = 0;
2159     if( lineBoundary > 0 )
2160     {
2161         padding = sizeDWORD - lineBoundary;
2162         bytePerLine += padding;
2163     }
2164 // TODO:
2165 /*
2166     // create a DIB header
2167     int headersize = sizeof(BITMAPINFOHEADER);
2168     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
2169     if( !lpDIBh )
2170     {
2171         wxFAIL_MSG( wxT("could not allocate data for DIB header") );
2172         free( data );
2173         return;
2174     }
2175     // Fill in the DIB header
2176     lpDIBh->bmiHeader.biSize = headersize;
2177     lpDIBh->bmiHeader.biWidth = width;
2178     lpDIBh->bmiHeader.biHeight = -height;
2179     lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
2180     lpDIBh->bmiHeader.biPlanes = 1;
2181     lpDIBh->bmiHeader.biBitCount = 24;
2182     lpDIBh->bmiHeader.biCompression = BI_RGB;
2183     lpDIBh->bmiHeader.biClrUsed = 0;
2184     // These seem not really needed for our purpose here.
2185     lpDIBh->bmiHeader.biClrImportant = 0;
2186     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
2187     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
2188     // memory for DIB data
2189     unsigned char *lpBits;
2190     lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
2191     if( !lpBits )
2192     {
2193         wxFAIL_MSG( wxT("could not allocate data for DIB") );
2194         free( data );
2195         free( lpDIBh );
2196         return;
2197     }
2198
2199     // copy data from the device-dependent bitmap to the DIB
2200     HDC hdc = ::GetDC(NULL);
2201     HBITMAP hbitmap;
2202     hbitmap = (HBITMAP) bitmap.GetHBITMAP();
2203     ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
2204
2205     // copy DIB data into the wxImage object
2206     int i, j;
2207     unsigned char *ptdata = data;
2208     unsigned char *ptbits = lpBits;
2209     for( i=0; i<height; i++ )
2210     {
2211         for( j=0; j<width; j++ )
2212         {
2213             *(ptdata++) = *(ptbits+2);
2214             *(ptdata++) = *(ptbits+1);
2215             *(ptdata++) = *(ptbits  );
2216             ptbits += 3;
2217         }
2218         ptbits += padding;
2219     }
2220
2221     // similarly, set data according to the possible mask bitmap
2222     if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
2223     {
2224         hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
2225         // memory DC created, color set, data copied, and memory DC deleted
2226         HDC memdc = ::CreateCompatibleDC( hdc );
2227         ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
2228         ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
2229         ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
2230         ::DeleteDC( memdc );
2231         // background color set to RGB(16,16,16) in consistent with wxGTK
2232         unsigned char r=16, g=16, b=16;
2233         ptdata = data;
2234         ptbits = lpBits;
2235         for( i=0; i<height; i++ )
2236         {
2237             for( j=0; j<width; j++ )
2238             {
2239                 if( *ptbits != 0 )
2240                     ptdata += 3;
2241                 else
2242                 {
2243                     *(ptdata++)  = r;
2244                     *(ptdata++)  = g;
2245                     *(ptdata++)  = b;
2246                 }
2247                 ptbits += 3;
2248             }
2249             ptbits += padding;
2250         }
2251         SetMaskColour( r, g, b );
2252         SetMask( TRUE );
2253     }
2254     else
2255     {
2256         SetMask( FALSE );
2257     }
2258     // free allocated resources
2259     ::ReleaseDC(NULL, hdc);
2260     free(lpDIBh);
2261     free(lpBits);
2262 */
2263 }
2264
2265 #endif
2266
2267 // A module to allow wxImage initialization/cleanup
2268 // without calling these functions from app.cpp or from
2269 // the user's application.
2270
2271 class wxImageModule: public wxModule
2272 {
2273 DECLARE_DYNAMIC_CLASS(wxImageModule)
2274 public:
2275     wxImageModule() {}
2276     bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; };
2277     void OnExit() { wxImage::CleanUpHandlers(); };
2278 };
2279
2280 IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)