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 #if WXWIN_COMPATIBILITY_2
 898     // check the wxBitmap object
 899     bitmap.GetBitmapData()->SetOk();
 900 #endif // WXWIN_COMPATIBILITY_2
 901
 902     return bitmap;
 903 }
 904
 905 wxImage::wxImage( const wxBitmap &bitmap )
 906 {
 907     // check the bitmap
 908     if( !bitmap.Ok() )
 909     {
 910         wxFAIL_MSG( wxT("invalid bitmap") );
 911         return;
 912     }
 913
 914     // create an wxImage object
 915     int width = bitmap.GetWidth();
 916     int height = bitmap.GetHeight();
 917     Create( width, height );
 918     unsigned char *data = GetData();
 919     if( !data )
 920     {
 921         wxFAIL_MSG( wxT("could not allocate data for image") );
 922         return;
 923     }
 924
 925     // calc the number of bytes per scanline and padding in the DIB
 926     int bytePerLine = width*3;
 927     int sizeDWORD = sizeof( DWORD );
 928     int lineBoundary =  bytePerLine % sizeDWORD;
 929     int padding = 0;
 930     if( lineBoundary > 0 )
 931     {
 932         padding = sizeDWORD - lineBoundary;
 933         bytePerLine += padding;
 934     }
 935
 936     // create a DIB header
 937     int headersize = sizeof(BITMAPINFOHEADER);
 938     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 939     if( !lpDIBh )
 940     {
 941         wxFAIL_MSG( wxT("could not allocate data for DIB header") );
 942         free( data );
 943         return;
 944     }
 945     // Fill in the DIB header
 946     lpDIBh->bmiHeader.biSize = headersize;
 947     lpDIBh->bmiHeader.biWidth = width;
 948     lpDIBh->bmiHeader.biHeight = -height;
 949     lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
 950     lpDIBh->bmiHeader.biPlanes = 1;
 951     lpDIBh->bmiHeader.biBitCount = 24;
 952     lpDIBh->bmiHeader.biCompression = BI_RGB;
 953     lpDIBh->bmiHeader.biClrUsed = 0;
 954     // These seem not really needed for our purpose here.
 955     lpDIBh->bmiHeader.biClrImportant = 0;
 956     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 957     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
 958     // memory for DIB data
 959     unsigned char *lpBits;
 960     lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
 961     if( !lpBits )
 962     {
 963         wxFAIL_MSG( wxT("could not allocate data for DIB") );
 964         free( data );
 965         free( lpDIBh );
 966         return;
 967     }
 968
 969     // copy data from the device-dependent bitmap to the DIB
 970     HDC hdc = ::GetDC(NULL);
 971     HBITMAP hbitmap;
 972     hbitmap = (HBITMAP) bitmap.GetHBITMAP();
 973     ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
 974
 975     // copy DIB data into the wxImage object
 976     int i, j;
 977     unsigned char *ptdata = data;
 978     unsigned char *ptbits = lpBits;
 979     for( i=0; i<height; i++ )
 980     {
 981         for( j=0; j<width; j++ )
 982         {
 983             *(ptdata++) = *(ptbits+2);
 984             *(ptdata++) = *(ptbits+1);
 985             *(ptdata++) = *(ptbits  );
 986             ptbits += 3;
 987         }
 988         ptbits += padding;
 989     }
 990
 991     // similarly, set data according to the possible mask bitmap
 992     if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
 993     {
 994         hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
 995         // memory DC created, color set, data copied, and memory DC deleted
 996         HDC memdc = ::CreateCompatibleDC( hdc );
 997         ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
 998         ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
 999         ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
1000         ::DeleteDC( memdc );
1001         // background color set to RGB(16,16,16) in consistent with wxGTK
1002         unsigned char r=16, g=16, b=16;
1003         ptdata = data;
1004         ptbits = lpBits;
1005         for( i=0; i<height; i++ )
1006         {
1007             for( j=0; j<width; j++ )
1008             {
1009                 if( *ptbits != 0 )
1010                     ptdata += 3;
1011                 else
1012                 {
1013                     *(ptdata++)  = r;
1014                     *(ptdata++)  = g;
1015                     *(ptdata++)  = b;
1016                 }
1017                 ptbits += 3;
1018             }
1019             ptbits += padding;
1020         }
1021         SetMaskColour( r, g, b );
1022         SetMask( TRUE );
1023     }
1024     else
1025     {
1026         SetMask( FALSE );
1027     }
1028     // free allocated resources
1029     ::ReleaseDC(NULL, hdc);
1030     free(lpDIBh);
1031     free(lpBits);
1032 }
1033
1034 #endif
1035
1036 #ifdef __WXMAC__
1037
1038 #include <PictUtils.h>
1039
1040 extern CTabHandle wxMacCreateColorTable( int numColors ) ;
1041 extern void wxMacDestroyColorTable( CTabHandle colors ) ;
1042 extern void wxMacSetColorTableEntry( CTabHandle newColors , int index , int red , int green ,  int blue ) ;
1043 extern GWorldPtr wxMacCreateGWorld( int height , int width , int depth ) ;
1044 extern void wxMacDestroyGWorld( GWorldPtr gw ) ;
1045
1046 wxBitmap wxImage::ConvertToBitmap() const
1047 {
1048     // width and height of the device-dependent bitmap
1049     int width = GetWidth();
1050     int height = GetHeight();
1051
1052     // Create picture
1053
1054     wxBitmap bitmap( width , height , wxDisplayDepth() ) ;
1055
1056     // Create mask
1057
1058     if (HasMask())
1059     {
1060         /*
1061         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1062
1063         mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1064
1065         wxMask *mask = new wxMask();
1066         mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1067
1068         bitmap.SetMask( mask );
1069        */
1070     }
1071
1072     // Render
1073
1074     int r_mask = GetMaskRed();
1075     int g_mask = GetMaskGreen();
1076     int b_mask = GetMaskBlue();
1077
1078                 CGrafPtr        origPort ;
1079                 GDHandle        origDevice ;
1080
1081                 GetGWorld( &origPort , &origDevice ) ;
1082                 SetGWorld( bitmap.GetHBITMAP() , NULL ) ;
1083
1084     register unsigned char* data = GetData();
1085
1086     int index = 0;
1087     for (int y = 0; y < height; y++)
1088     {
1089 #if 0
1090         unsigned char lastr = 0 ;
1091         unsigned char lastg = 0 ;
1092         unsigned char lastb = 0 ;
1093         RGBColor lastcolor ;
1094
1095                 MoveTo( 0 , y ) ;
1096         for (int x = 0; x < width; x++)
1097         {
1098                 unsigned char r = data[index++];
1099                 unsigned char g = data[index++];
1100                 unsigned char b = data[index++];
1101
1102                         if ( r != lastr || g != lastg || b != lastb )
1103                         {
1104                         lastcolor.red = ( lastr  << 8 ) + lastr ;
1105                         lastcolor.green = ( lastg << 8 ) + lastg ;
1106                         lastcolor.blue = ( lastb << 8 ) + lastb ;
1107                                 RGBForeColor( &lastcolor ) ;
1108                                 LineTo( x , y ) ;
1109                                 lastr = r ;
1110                                 lastg = g ;
1111                                 lastb = b ;
1112                         }
1113         } // for width
1114                 lastcolor.red = ( lastr  << 8 ) + lastr ;
1115                 lastcolor.green = ( lastg << 8 ) + lastg ;
1116                 lastcolor.blue = ( lastb << 8 ) + lastb ;
1117                 RGBForeColor( &lastcolor ) ;
1118         LineTo( width - 1 , y ) ;
1119 #else
1120         for (int x = 0; x < width; x++)
1121         {
1122                 unsigned char r = data[index++];
1123                 unsigned char g = data[index++];
1124                 unsigned char b = data[index++];
1125                 RGBColor color ;
1126                 color.red = ( r  << 8 ) + r ;
1127                 color.green = ( g << 8 ) + g ;
1128                 color.blue = ( b << 8 ) + b ;
1129                 SetCPixel( x , y , &color ) ;
1130         }
1131 #endif
1132     }  // for height
1133
1134         SetGWorld( origPort , origDevice ) ;
1135
1136     return bitmap;
1137
1138 }
1139
1140 wxImage::wxImage( const wxBitmap &bitmap )
1141 {
1142     // check the bitmap
1143     if( !bitmap.Ok() )
1144     {
1145         wxFAIL_MSG( "invalid bitmap" );
1146         return;
1147     }
1148
1149     // create an wxImage object
1150     int width = bitmap.GetWidth();
1151     int height = bitmap.GetHeight();
1152     Create( width, height );
1153     /*
1154     unsigned char *data = GetData();
1155     if( !data )
1156     {
1157         wxFAIL_MSG( "could not allocate data for image" );
1158         return;
1159     }
1160
1161     // calc the number of bytes per scanline and padding in the DIB
1162     int bytePerLine = width*3;
1163     int sizeDWORD = sizeof( DWORD );
1164     div_t lineBoundary = div( bytePerLine, sizeDWORD );
1165     int padding = 0;
1166     if( lineBoundary.rem > 0 )
1167     {
1168         padding = sizeDWORD - lineBoundary.rem;
1169         bytePerLine += padding;
1170     }
1171
1172     // create a DIB header
1173     int headersize = sizeof(BITMAPINFOHEADER);
1174     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
1175     if( !lpDIBh )
1176     {
1177         wxFAIL_MSG( "could not allocate data for DIB header" );
1178         free( data );
1179         return;
1180     }
1181     // Fill in the DIB header
1182     lpDIBh->bmiHeader.biSize = headersize;
1183     lpDIBh->bmiHeader.biWidth = width;
1184     lpDIBh->bmiHeader.biHeight = -height;
1185     lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
1186     lpDIBh->bmiHeader.biPlanes = 1;
1187     lpDIBh->bmiHeader.biBitCount = 24;
1188     lpDIBh->bmiHeader.biCompression = BI_RGB;
1189     lpDIBh->bmiHeader.biClrUsed = 0;
1190     // These seem not really needed for our purpose here.
1191     lpDIBh->bmiHeader.biClrImportant = 0;
1192     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
1193     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
1194     // memory for DIB data
1195     unsigned char *lpBits;
1196     lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
1197     if( !lpBits )
1198     {
1199         wxFAIL_MSG( "could not allocate data for DIB" );
1200         free( data );
1201         free( lpDIBh );
1202         return;
1203     }
1204
1205     // copy data from the device-dependent bitmap to the DIB
1206     HDC hdc = ::GetDC(NULL);
1207     HBITMAP hbitmap;
1208     hbitmap = (HBITMAP) bitmap.GetHBITMAP();
1209     ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
1210
1211     // copy DIB data into the wxImage object
1212     int i, j;
1213     unsigned char *ptdata = data;
1214     unsigned char *ptbits = lpBits;
1215     for( i=0; i<height; i++ )
1216     {
1217         for( j=0; j<width; j++ )
1218         {
1219             *(ptdata++) = *(ptbits+2);
1220             *(ptdata++) = *(ptbits+1);
1221             *(ptdata++) = *(ptbits  );
1222             ptbits += 3;
1223         }
1224         ptbits += padding;
1225     }
1226
1227     // similarly, set data according to the possible mask bitmap
1228     if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
1229     {
1230         hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
1231         // memory DC created, color set, data copied, and memory DC deleted
1232         HDC memdc = ::CreateCompatibleDC( hdc );
1233         ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
1234         ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
1235         ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
1236         ::DeleteDC( memdc );
1237         // background color set to RGB(16,16,16) in consistent with wxGTK
1238         unsigned char r=16, g=16, b=16;
1239         ptdata = data;
1240         ptbits = lpBits;
1241         for( i=0; i<height; i++ )
1242         {
1243             for( j=0; j<width; j++ )
1244             {
1245                 if( *ptbits != 0 )
1246                     ptdata += 3;
1247                 else
1248                 {
1249                     *(ptdata++)  = r;
1250                     *(ptdata++)  = g;
1251                     *(ptdata++)  = b;
1252                 }
1253                 ptbits += 3;
1254             }
1255             ptbits += padding;
1256         }
1257         SetMaskColour( r, g, b );
1258         SetMask( TRUE );
1259     }
1260     else
1261     {
1262         SetMask( FALSE );
1263     }
1264     // free allocated resources
1265     ::ReleaseDC(NULL, hdc);
1266     free(lpDIBh);
1267     free(lpBits);
1268     */
1269 }
1270
1271 #endif
1272
1273 //-----------------------------------------------------------------------------
1274 // GTK conversion routines
1275 //-----------------------------------------------------------------------------
1276
1277 #ifdef __WXGTK__
1278
1279 #include <gtk/gtk.h>
1280 #include <gdk/gdk.h>
1281 #include <gdk/gdkx.h>
1282
1283 #if (GTK_MINOR_VERSION > 0)
1284 #include <gdk/gdkrgb.h>
1285 #endif
1286
1287 wxBitmap wxImage::ConvertToBitmap() const
1288 {
1289     wxBitmap bitmap;
1290
1291     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
1292
1293     int width = GetWidth();
1294     int height = GetHeight();
1295
1296     bitmap.SetHeight( height );
1297     bitmap.SetWidth( width );
1298
1299     bitmap.SetPixmap( gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, -1 ) );
1300
1301      // Retrieve depth
1302
1303     GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
1304     if (visual == NULL) visual = gdk_visual_get_system();
1305     int bpp = visual->depth;
1306
1307     bitmap.SetDepth( bpp );
1308
1309     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1310     if (bpp < 8) bpp = 8;
1311
1312 #if (GTK_MINOR_VERSION > 0)
1313
1314     if (!HasMask() && (bpp > 8))
1315     {
1316         static bool s_hasInitialized = FALSE;
1317
1318         if (!s_hasInitialized)
1319         {
1320             gdk_rgb_init();
1321             s_hasInitialized = TRUE;
1322         }
1323
1324         GdkGC *gc = gdk_gc_new( bitmap.GetPixmap() );
1325
1326         gdk_draw_rgb_image( bitmap.GetPixmap(),
1327                             gc,
1328                             0, 0,
1329                             width, height,
1330                             GDK_RGB_DITHER_NONE,
1331                             GetData(),
1332                             width*3 );
1333
1334         gdk_gc_unref( gc );
1335
1336         return bitmap;
1337     }
1338
1339 #endif
1340
1341     // Create picture image
1342
1343     GdkImage *data_image =
1344         gdk_image_new( GDK_IMAGE_FASTEST, gdk_visual_get_system(), width, height );
1345
1346     // Create mask image
1347
1348     GdkImage *mask_image = (GdkImage*) NULL;
1349
1350     if (HasMask())
1351     {
1352         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1353
1354         mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1355
1356         wxMask *mask = new wxMask();
1357         mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1358
1359         bitmap.SetMask( mask );
1360     }
1361
1362     // Render
1363
1364     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1365     byte_order b_o = RGB;
1366
1367     if (bpp >= 24)
1368     {
1369         GdkVisual *visual = gdk_visual_get_system();
1370         if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
1371         else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RGB;
1372         else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
1373         else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
1374         else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
1375         else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
1376     }
1377
1378     int r_mask = GetMaskRed();
1379     int g_mask = GetMaskGreen();
1380     int b_mask = GetMaskBlue();
1381
1382     unsigned char* data = GetData();
1383
1384     int index = 0;
1385     for (int y = 0; y < height; y++)
1386     {
1387         for (int x = 0; x < width; x++)
1388         {
1389             int r = data[index];
1390             index++;
1391             int g = data[index];
1392             index++;
1393             int b = data[index];
1394             index++;
1395
1396             if (HasMask())
1397             {
1398                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1399                     gdk_image_put_pixel( mask_image, x, y, 1 );
1400                 else
1401                     gdk_image_put_pixel( mask_image, x, y, 0 );
1402             }
1403
1404             if (HasMask())
1405             {
1406                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1407                     gdk_image_put_pixel( mask_image, x, y, 1 );
1408                 else
1409                     gdk_image_put_pixel( mask_image, x, y, 0 );
1410             }
1411
1412             switch (bpp)
1413             {
1414             case 8:
1415                 {
1416                     int pixel = -1;
1417                     if (wxTheApp->m_colorCube)
1418                     {
1419                         pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1420                     }
1421                     else
1422                     {
1423                         GdkColormap *cmap = gtk_widget_get_default_colormap();
1424                         GdkColor *colors = cmap->colors;
1425                         int max = 3 * (65536);
1426
1427                         for (int i = 0; i < cmap->size; i++)
1428                         {
1429                             int rdiff = (r << 8) - colors[i].red;
1430                             int gdiff = (g << 8) - colors[i].green;
1431                             int bdiff = (b << 8) - colors[i].blue;
1432                             int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
1433                             if (sum < max) { pixel = i; max = sum; }
1434                         }
1435                     }
1436
1437                     gdk_image_put_pixel( data_image, x, y, pixel );
1438
1439                     break;
1440                 }
1441             case 15:
1442                 {
1443                     guint32 pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1444                     gdk_image_put_pixel( data_image, x, y, pixel );
1445                     break;
1446                 }
1447             case 16:
1448                 {
1449                     guint32 pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1450                     gdk_image_put_pixel( data_image, x, y, pixel );
1451                     break;
1452                 }
1453             case 32:
1454             case 24:
1455                 {
1456                     guint32 pixel = 0;
1457                     switch (b_o)
1458                     {
1459                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1460                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1461                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1462                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1463                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1464                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1465                     }
1466                     gdk_image_put_pixel( data_image, x, y, pixel );
1467                 }
1468             default: break;
1469             }
1470         } // for
1471     }  // for
1472
1473     // Blit picture
1474
1475     GdkGC *data_gc = gdk_gc_new( bitmap.GetPixmap() );
1476
1477     gdk_draw_image( bitmap.GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
1478
1479     gdk_image_destroy( data_image );
1480     gdk_gc_unref( data_gc );
1481
1482     // Blit mask
1483
1484     if (HasMask())
1485     {
1486         GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1487
1488         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1489
1490         gdk_image_destroy( mask_image );
1491         gdk_gc_unref( mask_gc );
1492     }
1493
1494     return bitmap;
1495 }
1496
1497 wxImage::wxImage( const wxBitmap &bitmap )
1498 {
1499     wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1500
1501     GdkImage *gdk_image = (GdkImage*) NULL;
1502     if (bitmap.GetPixmap())
1503     {
1504         gdk_image = gdk_image_get( bitmap.GetPixmap(),
1505             0, 0,
1506             bitmap.GetWidth(), bitmap.GetHeight() );
1507     } else
1508     if (bitmap.GetBitmap())
1509     {
1510         gdk_image = gdk_image_get( bitmap.GetBitmap(),
1511             0, 0,
1512             bitmap.GetWidth(), bitmap.GetHeight() );
1513     } else
1514     {
1515         wxFAIL_MSG( wxT("Ill-formed bitmap") );
1516     }
1517
1518     wxCHECK_RET( gdk_image, wxT("couldn't create image") );
1519
1520     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1521     char unsigned *data = GetData();
1522
1523     if (!data)
1524     {
1525         gdk_image_destroy( gdk_image );
1526         wxFAIL_MSG( wxT("couldn't create image") );
1527         return;
1528     }
1529
1530     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1531     if (bitmap.GetMask())
1532     {
1533         gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1534             0, 0,
1535             bitmap.GetWidth(), bitmap.GetHeight() );
1536
1537         SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1538     }
1539
1540     GdkVisual *visual = (GdkVisual*) NULL;
1541     if (bitmap.GetPixmap())
1542         visual = gdk_window_get_visual( bitmap.GetPixmap() );
1543     else
1544         visual = gdk_window_get_visual( bitmap.GetBitmap() );
1545
1546     if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent );
1547     int bpp = visual->depth;
1548     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1549
1550     GdkColormap *cmap = gtk_widget_get_default_colormap();
1551
1552     long pos = 0;
1553     for (int j = 0; j < bitmap.GetHeight(); j++)
1554     {
1555         for (int i = 0; i < bitmap.GetWidth(); i++)
1556         {
1557             wxInt32 pixel = gdk_image_get_pixel( gdk_image, i, j );
1558             if (bpp <= 8)
1559             {
1560                 data[pos] = cmap->colors[pixel].red >> 8;
1561                 data[pos+1] = cmap->colors[pixel].green >> 8;
1562                 data[pos+2] = cmap->colors[pixel].blue >> 8;
1563             } else if (bpp == 15)
1564             {
1565 #if (wxBYTE_ORDER == wxBIG_ENDIAN)
1566                 // ?
1567 #endif
1568                 data[pos] = (pixel >> 7) & 0xf8;
1569                 data[pos+1] = (pixel >> 2) & 0xf8;
1570                 data[pos+2] = (pixel << 3) & 0xf8;
1571             } else if (bpp == 16)
1572             {
1573 #if (wxBYTE_ORDER == wxBIG_ENDIAN)
1574                 // ?
1575 #endif
1576                 data[pos] = (pixel >> 8) & 0xf8;
1577                 data[pos+1] = (pixel >> 3) & 0xfc;
1578                 data[pos+2] = (pixel << 3) & 0xf8;
1579             } else
1580             {
1581 #if (wxBYTE_ORDER == wxBIG_ENDIAN)
1582                 data[pos] = (pixel) & 0xff;             // Red
1583                 data[pos+1] = (pixel >> 8) & 0xff;      // Green
1584                 data[pos+2] = (pixel >> 16) & 0xff;     // Blue
1585 #else
1586                 data[pos] = (pixel >> 16) & 0xff;
1587                 data[pos+1] = (pixel >> 8) & 0xff;
1588                 data[pos+2] = pixel & 0xff;
1589 #endif
1590             }
1591
1592             if (gdk_image_mask)
1593             {
1594                 int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1595                 if (mask_pixel == 0)
1596                 {
1597                     data[pos] = 16;
1598                     data[pos+1] = 16;
1599                     data[pos+2] = 16;
1600                 }
1601             }
1602
1603             pos += 3;
1604         }
1605     }
1606
1607     gdk_image_destroy( gdk_image );
1608     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1609 }
1610
1611 #endif
1612
1613 //-----------------------------------------------------------------------------
1614 // Motif conversion routines
1615 //-----------------------------------------------------------------------------
1616
1617 #ifdef __WXMOTIF__
1618 #ifdef __VMS__
1619 #pragma message disable nosimpint
1620 #endif
1621 #include <Xm/Xm.h>
1622 #ifdef __VMS__
1623 #pragma message enable nosimpint
1624 #endif
1625 #include "wx/utils.h"
1626 #include <math.h>
1627
1628 wxBitmap wxImage::ConvertToBitmap() const
1629 {
1630     wxBitmap bitmap;
1631
1632     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
1633
1634     int width = GetWidth();
1635     int height = GetHeight();
1636
1637     bitmap.SetHeight( height );
1638     bitmap.SetWidth( width );
1639
1640     Display *dpy = (Display*) wxGetDisplay();
1641     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1642     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1643
1644     // Create image
1645
1646     XImage *data_image = XCreateImage( dpy, vis, bpp, ZPixmap, 0, 0, width, height, 32, 0 );
1647     data_image->data = (char*) malloc( data_image->bytes_per_line * data_image->height );
1648
1649     bitmap.Create( width, height, bpp );
1650
1651     /*
1652     // Create mask
1653
1654       GdkImage *mask_image = (GdkImage*) NULL;
1655
1656         if (HasMask())
1657         {
1658         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1659
1660           mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1661
1662             wxMask *mask = new wxMask();
1663             mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1664
1665               bitmap.SetMask( mask );
1666               }
1667     */
1668
1669     // Retrieve depth info
1670
1671     XVisualInfo vinfo_template;
1672     XVisualInfo *vi;
1673
1674     vinfo_template.visual = vis;
1675     vinfo_template.visualid = XVisualIDFromVisual( vis );
1676     vinfo_template.depth = bpp;
1677     int nitem = 0;
1678
1679     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1680
1681     wxCHECK_MSG( vi, wxNullBitmap, wxT("no visual") );
1682
1683     XFree( vi );
1684
1685     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1686     if (bpp < 8) bpp = 8;
1687
1688     // Render
1689
1690     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1691     byte_order b_o = RGB;
1692
1693     if (bpp >= 24)
1694     {
1695         if ((vi->red_mask > vi->green_mask) && (vi->green_mask > vi->blue_mask))      b_o = RGB;
1696         else if ((vi->red_mask > vi->blue_mask) && (vi->blue_mask > vi->green_mask))  b_o = RGB;
1697         else if ((vi->blue_mask > vi->red_mask) && (vi->red_mask > vi->green_mask))   b_o = BRG;
1698         else if ((vi->blue_mask > vi->green_mask) && (vi->green_mask > vi->red_mask)) b_o = BGR;
1699         else if ((vi->green_mask > vi->red_mask) && (vi->red_mask > vi->blue_mask))   b_o = GRB;
1700         else if ((vi->green_mask > vi->blue_mask) && (vi->blue_mask > vi->red_mask))  b_o = GBR;
1701     }
1702
1703     /*
1704     int r_mask = GetMaskRed();
1705     int g_mask = GetMaskGreen();
1706     int b_mask = GetMaskBlue();
1707     */
1708
1709     XColor colors[256];
1710     if (bpp == 8)
1711     {
1712         Colormap cmap = (Colormap) wxTheApp->GetMainColormap( dpy );
1713
1714         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1715         XQueryColors( dpy, cmap, colors, 256 );
1716     }
1717
1718     unsigned char* data = GetData();
1719
1720     int index = 0;
1721     for (int y = 0; y < height; y++)
1722     {
1723         for (int x = 0; x < width; x++)
1724         {
1725             int r = data[index];
1726             index++;
1727             int g = data[index];
1728             index++;
1729             int b = data[index];
1730             index++;
1731
1732             /*
1733             if (HasMask())
1734             {
1735             if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1736             gdk_image_put_pixel( mask_image, x, y, 1 );
1737             else
1738             gdk_image_put_pixel( mask_image, x, y, 0 );
1739             }
1740             */
1741
1742             switch (bpp)
1743             {
1744             case 8:
1745                 {
1746                     int pixel = -1;
1747                     /*
1748                     if (wxTheApp->m_colorCube)
1749                     {
1750                     pixel = wxTheApp->m_colorCube
1751                     [ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1752                     }
1753                     else
1754                     {
1755                     */
1756                     int max = 3 * (65536);
1757                     for (int i = 0; i < 256; i++)
1758                     {
1759                         int rdiff = (r << 8) - colors[i].red;
1760                         int gdiff = (g << 8) - colors[i].green;
1761                         int bdiff = (b << 8) - colors[i].blue;
1762                         int sum = abs (rdiff) + abs (gdiff) + abs (bdiff);
1763                         if (sum < max) { pixel = i; max = sum; }
1764                     }
1765                     /*
1766                     }
1767                     */
1768                     XPutPixel( data_image, x, y, pixel );
1769                     break;
1770                 }
1771             case 15:
1772                 {
1773                     int pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1774                     XPutPixel( data_image, x, y, pixel );
1775                     break;
1776                 }
1777             case 16:
1778                 {
1779                     int pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1780                     XPutPixel( data_image, x, y, pixel );
1781                     break;
1782                 }
1783             case 32:
1784             case 24:
1785                 {
1786                     int pixel = 0;
1787                     switch (b_o)
1788                     {
1789                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1790                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1791                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1792                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1793                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1794                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1795                     }
1796                     XPutPixel( data_image, x, y, pixel );
1797                 }
1798             default: break;
1799             }
1800         } // for
1801     }  // for
1802
1803     // Blit picture
1804
1805     XGCValues gcvalues;
1806     gcvalues.foreground = BlackPixel( dpy, DefaultScreen( dpy ) );
1807     GC gc = XCreateGC( dpy, RootWindow ( dpy, DefaultScreen(dpy) ), GCForeground, &gcvalues );
1808     XPutImage( dpy, (Drawable)bitmap.GetPixmap(), gc, data_image, 0, 0, 0, 0, width, height );
1809
1810     XDestroyImage( data_image );
1811     XFreeGC( dpy, gc );
1812
1813     /*
1814     // Blit mask
1815
1816       if (HasMask())
1817       {
1818       GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1819
1820         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1821
1822           gdk_image_destroy( mask_image );
1823           gdk_gc_unref( mask_gc );
1824           }
1825     */
1826
1827     return bitmap;
1828 }
1829
1830 wxImage::wxImage( const wxBitmap &bitmap )
1831 {
1832     wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1833
1834     Display *dpy = (Display*) wxGetDisplay();
1835     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1836     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1837
1838     XImage *ximage = XGetImage( dpy,
1839         (Drawable)bitmap.GetPixmap(),
1840         0, 0,
1841         bitmap.GetWidth(), bitmap.GetHeight(),
1842         AllPlanes, ZPixmap );
1843
1844     wxCHECK_RET( ximage, wxT("couldn't create image") );
1845
1846     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1847     char unsigned *data = GetData();
1848
1849     if (!data)
1850     {
1851         XDestroyImage( ximage );
1852         wxFAIL_MSG( wxT("couldn't create image") );
1853         return;
1854     }
1855
1856     /*
1857     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1858     if (bitmap.GetMask())
1859     {
1860     gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1861     0, 0,
1862     bitmap.GetWidth(), bitmap.GetHeight() );
1863
1864       SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1865       }
1866     */
1867
1868     // Retrieve depth info
1869
1870     XVisualInfo vinfo_template;
1871     XVisualInfo *vi;
1872
1873     vinfo_template.visual = vis;
1874     vinfo_template.visualid = XVisualIDFromVisual( vis );
1875     vinfo_template.depth = bpp;
1876     int nitem = 0;
1877
1878     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1879
1880     wxCHECK_RET( vi, wxT("no visual") );
1881
1882     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1883
1884     XFree( vi );
1885
1886     XColor colors[256];
1887     if (bpp == 8)
1888     {
1889         Colormap cmap = (Colormap)wxTheApp->GetMainColormap( dpy );
1890
1891         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1892         XQueryColors( dpy, cmap, colors, 256 );
1893     }
1894
1895     long pos = 0;
1896     for (int j = 0; j < bitmap.GetHeight(); j++)
1897     {
1898         for (int i = 0; i < bitmap.GetWidth(); i++)
1899         {
1900             int pixel = XGetPixel( ximage, i, j );
1901             if (bpp <= 8)
1902             {
1903                 data[pos] = colors[pixel].red >> 8;
1904                 data[pos+1] = colors[pixel].green >> 8;
1905                 data[pos+2] = colors[pixel].blue >> 8;
1906             } else if (bpp == 15)
1907             {
1908                 data[pos] = (pixel >> 7) & 0xf8;
1909                 data[pos+1] = (pixel >> 2) & 0xf8;
1910                 data[pos+2] = (pixel << 3) & 0xf8;
1911             } else if (bpp == 16)
1912             {
1913                 data[pos] = (pixel >> 8) & 0xf8;
1914                 data[pos+1] = (pixel >> 3) & 0xfc;
1915                 data[pos+2] = (pixel << 3) & 0xf8;
1916             } else
1917             {
1918                 data[pos] = (pixel >> 16) & 0xff;
1919                 data[pos+1] = (pixel >> 8) & 0xff;
1920                 data[pos+2] = pixel & 0xff;
1921             }
1922
1923             /*
1924             if (gdk_image_mask)
1925             {
1926             int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1927             if (mask_pixel == 0)
1928             {
1929             data[pos] = 16;
1930             data[pos+1] = 16;
1931             data[pos+2] = 16;
1932             }
1933             }
1934             */
1935
1936             pos += 3;
1937         }
1938     }
1939
1940     XDestroyImage( ximage );
1941     /*
1942     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1943     */
1944 }
1945 #endif
1946
1947 #ifdef __WXPM__
1948 // OS/2 Presentation manager conversion routings
1949
1950 wxBitmap wxImage::ConvertToBitmap() const
1951 {
1952     if ( !Ok() )
1953         return wxNullBitmap;
1954     wxBitmap bitmap; // remove
1955 // TODO:
1956 /*
1957     int sizeLimit = 1024*768*3;
1958
1959     // width and height of the device-dependent bitmap
1960     int width = GetWidth();
1961     int bmpHeight = GetHeight();
1962
1963     // calc the number of bytes per scanline and padding
1964     int bytePerLine = width*3;
1965     int sizeDWORD = sizeof( DWORD );
1966     int lineBoundary = bytePerLine % sizeDWORD;
1967     int padding = 0;
1968     if( lineBoundary > 0 )
1969     {
1970         padding = sizeDWORD - lineBoundary;
1971         bytePerLine += padding;
1972     }
1973     // calc the number of DIBs and heights of DIBs
1974     int numDIB = 1;
1975     int hRemain = 0;
1976     int height = sizeLimit/bytePerLine;
1977     if( height >= bmpHeight )
1978         height = bmpHeight;
1979     else
1980     {
1981         numDIB =  bmpHeight / height;
1982         hRemain = bmpHeight % height;
1983         if( hRemain >0 )  numDIB++;
1984     }
1985
1986     // set bitmap parameters
1987     wxBitmap bitmap;
1988     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
1989     bitmap.SetWidth( width );
1990     bitmap.SetHeight( bmpHeight );
1991     bitmap.SetDepth( wxDisplayDepth() );
1992
1993     // create a DIB header
1994     int headersize = sizeof(BITMAPINFOHEADER);
1995     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
1996     wxCHECK_MSG( lpDIBh, bitmap, wxT("could not allocate memory for DIB header") );
1997     // Fill in the DIB header
1998     lpDIBh->bmiHeader.biSize = headersize;
1999     lpDIBh->bmiHeader.biWidth = (DWORD)width;
2000     lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
2001     lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
2002     //   the general formula for biSizeImage:
2003     //      ( ( ( ((DWORD)width*24) +31 ) & ~31 ) >> 3 ) * height;
2004     lpDIBh->bmiHeader.biPlanes = 1;
2005     lpDIBh->bmiHeader.biBitCount = 24;
2006     lpDIBh->bmiHeader.biCompression = BI_RGB;
2007     lpDIBh->bmiHeader.biClrUsed = 0;
2008     // These seem not really needed for our purpose here.
2009     lpDIBh->bmiHeader.biClrImportant = 0;
2010     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
2011     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
2012     // memory for DIB data
2013     unsigned char *lpBits;
2014     lpBits = (unsigned char *)malloc( lpDIBh->bmiHeader.biSizeImage );
2015     if( !lpBits )
2016     {
2017         wxFAIL_MSG( wxT("could not allocate memory for DIB") );
2018         free( lpDIBh );
2019         return bitmap;
2020     }
2021
2022     // create and set the device-dependent bitmap
2023     HDC hdc = ::GetDC(NULL);
2024     HDC memdc = ::CreateCompatibleDC( hdc );
2025     HBITMAP hbitmap;
2026     hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight );
2027     ::SelectObject( memdc, hbitmap);
2028
2029     // copy image data into DIB data and then into DDB (in a loop)
2030     unsigned char *data = GetData();
2031     int i, j, n;
2032     int origin = 0;
2033     unsigned char *ptdata = data;
2034     unsigned char *ptbits;
2035
2036     for( n=0; n<numDIB; n++ )
2037     {
2038         if( numDIB > 1 && n == numDIB-1 && hRemain > 0 )
2039         {
2040             // redefine height and size of the (possibly) last smaller DIB
2041             // memory is not reallocated
2042             height = hRemain;
2043             lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
2044             lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
2045         }
2046         ptbits = lpBits;
2047
2048         for( j=0; j<height; j++ )
2049         {
2050             for( i=0; i<width; i++ )
2051             {
2052                 *(ptbits++) = *(ptdata+2);
2053                 *(ptbits++) = *(ptdata+1);
2054                 *(ptbits++) = *(ptdata  );
2055                 ptdata += 3;
2056             }
2057             for( i=0; i< padding; i++ )   *(ptbits++) = 0;
2058         }
2059         ::StretchDIBits( memdc, 0, origin, width, height,\
2060             0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
2061         origin += height;
2062         // if numDIB = 1,  lines below can also be used
2063         //    hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
2064         // The above line is equivalent to the following two lines.
2065         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
2066         //    ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
2067         // or the following lines
2068         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
2069         //    HDC memdc = ::CreateCompatibleDC( hdc );
2070         //    ::SelectObject( memdc, hbitmap);
2071         //    ::SetDIBitsToDevice( memdc, 0, 0, width, height,
2072         //            0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
2073         //    ::SelectObject( memdc, 0 );
2074         //    ::DeleteDC( memdc );
2075     }
2076     bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
2077
2078     // similarly, created an mono-bitmap for the possible mask
2079     if( HasMask() )
2080     {
2081         hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL );
2082         ::SelectObject( memdc, hbitmap);
2083         if( numDIB == 1 )   height = bmpHeight;
2084         else                height = sizeLimit/bytePerLine;
2085         lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
2086         lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
2087         origin = 0;
2088         unsigned char r = GetMaskRed();
2089         unsigned char g = GetMaskGreen();
2090         unsigned char b = GetMaskBlue();
2091         unsigned char zero = 0, one = 255;
2092         ptdata = data;
2093         for( n=0; n<numDIB; n++ )
2094         {
2095             if( numDIB > 1 && n == numDIB - 1 && hRemain > 0 )
2096             {
2097                 // redefine height and size of the (possibly) last smaller DIB
2098                 // memory is not reallocated
2099                 height = hRemain;
2100                 lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
2101                 lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
2102             }
2103             ptbits = lpBits;
2104             for( int j=0; j<height; j++ )
2105             {
2106                 for(i=0; i<width; i++ )
2107                 {
2108                     if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
2109                     {
2110                         *(ptbits++) = one;
2111                         *(ptbits++) = one;
2112                         *(ptbits++) = one;
2113                     }
2114                     else
2115                     {
2116                         *(ptbits++) = zero;
2117                         *(ptbits++) = zero;
2118                         *(ptbits++) = zero;
2119                     }
2120                 }
2121                 for( i=0; i< padding; i++ )   *(ptbits++) = zero;
2122             }
2123             ::StretchDIBits( memdc, 0, origin, width, height,\
2124                 0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
2125             origin += height;
2126         }
2127         // create a wxMask object
2128         wxMask *mask = new wxMask();
2129         mask->SetMaskBitmap( (WXHBITMAP) hbitmap );
2130         bitmap.SetMask( mask );
2131     }
2132
2133     // free allocated resources
2134     ::SelectObject( memdc, 0 );
2135     ::DeleteDC( memdc );
2136     ::ReleaseDC(NULL, hdc);
2137     free(lpDIBh);
2138     free(lpBits);
2139
2140     // check the wxBitmap object
2141     if( bitmap.GetHBITMAP() )
2142         bitmap.SetOk( TRUE );
2143     else
2144         bitmap.SetOk( FALSE );
2145 */
2146     return bitmap;
2147 }
2148
2149 wxImage::wxImage( const wxBitmap &bitmap )
2150 {
2151     // check the bitmap
2152     if( !bitmap.Ok() )
2153     {
2154         wxFAIL_MSG( wxT("invalid bitmap") );
2155         return;
2156     }
2157
2158     // create an wxImage object
2159     int width = bitmap.GetWidth();
2160     int height = bitmap.GetHeight();
2161     Create( width, height );
2162     unsigned char *data = GetData();
2163     if( !data )
2164     {
2165         wxFAIL_MSG( wxT("could not allocate data for image") );
2166         return;
2167     }
2168
2169     // calc the number of bytes per scanline and padding in the DIB
2170     int bytePerLine = width*3;
2171     int sizeDWORD = sizeof( DWORD );
2172     int lineBoundary =  bytePerLine % sizeDWORD;
2173     int padding = 0;
2174     if( lineBoundary > 0 )
2175     {
2176         padding = sizeDWORD - lineBoundary;
2177         bytePerLine += padding;
2178     }
2179 // TODO:
2180 /*
2181     // create a DIB header
2182     int headersize = sizeof(BITMAPINFOHEADER);
2183     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
2184     if( !lpDIBh )
2185     {
2186         wxFAIL_MSG( wxT("could not allocate data for DIB header") );
2187         free( data );
2188         return;
2189     }
2190     // Fill in the DIB header
2191     lpDIBh->bmiHeader.biSize = headersize;
2192     lpDIBh->bmiHeader.biWidth = width;
2193     lpDIBh->bmiHeader.biHeight = -height;
2194     lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
2195     lpDIBh->bmiHeader.biPlanes = 1;
2196     lpDIBh->bmiHeader.biBitCount = 24;
2197     lpDIBh->bmiHeader.biCompression = BI_RGB;
2198     lpDIBh->bmiHeader.biClrUsed = 0;
2199     // These seem not really needed for our purpose here.
2200     lpDIBh->bmiHeader.biClrImportant = 0;
2201     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
2202     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
2203     // memory for DIB data
2204     unsigned char *lpBits;
2205     lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
2206     if( !lpBits )
2207     {
2208         wxFAIL_MSG( wxT("could not allocate data for DIB") );
2209         free( data );
2210         free( lpDIBh );
2211         return;
2212     }
2213
2214     // copy data from the device-dependent bitmap to the DIB
2215     HDC hdc = ::GetDC(NULL);
2216     HBITMAP hbitmap;
2217     hbitmap = (HBITMAP) bitmap.GetHBITMAP();
2218     ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
2219
2220     // copy DIB data into the wxImage object
2221     int i, j;
2222     unsigned char *ptdata = data;
2223     unsigned char *ptbits = lpBits;
2224     for( i=0; i<height; i++ )
2225     {
2226         for( j=0; j<width; j++ )
2227         {
2228             *(ptdata++) = *(ptbits+2);
2229             *(ptdata++) = *(ptbits+1);
2230             *(ptdata++) = *(ptbits  );
2231             ptbits += 3;
2232         }
2233         ptbits += padding;
2234     }
2235
2236     // similarly, set data according to the possible mask bitmap
2237     if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
2238     {
2239         hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
2240         // memory DC created, color set, data copied, and memory DC deleted
2241         HDC memdc = ::CreateCompatibleDC( hdc );
2242         ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
2243         ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
2244         ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
2245         ::DeleteDC( memdc );
2246         // background color set to RGB(16,16,16) in consistent with wxGTK
2247         unsigned char r=16, g=16, b=16;
2248         ptdata = data;
2249         ptbits = lpBits;
2250         for( i=0; i<height; i++ )
2251         {
2252             for( j=0; j<width; j++ )
2253             {
2254                 if( *ptbits != 0 )
2255                     ptdata += 3;
2256                 else
2257                 {
2258                     *(ptdata++)  = r;
2259                     *(ptdata++)  = g;
2260                     *(ptdata++)  = b;
2261                 }
2262                 ptbits += 3;
2263             }
2264             ptbits += padding;
2265         }
2266         SetMaskColour( r, g, b );
2267         SetMask( TRUE );
2268     }
2269     else
2270     {
2271         SetMask( FALSE );
2272     }
2273     // free allocated resources
2274     ::ReleaseDC(NULL, hdc);
2275     free(lpDIBh);
2276     free(lpBits);
2277 */
2278 }
2279
2280 #endif
2281
2282 // A module to allow wxImage initialization/cleanup
2283 // without calling these functions from app.cpp or from
2284 // the user's application.
2285
2286 class wxImageModule: public wxModule
2287 {
2288 DECLARE_DYNAMIC_CLASS(wxImageModule)
2289 public:
2290     wxImageModule() {}
2291     bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; };
2292     void OnExit() { wxImage::CleanUpHandlers(); };
2293 };
2294
2295 IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)