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 //-----------------------------------------------------------------------------
1038 // GTK conversion routines
1039 //-----------------------------------------------------------------------------
1040
1041 #ifdef __WXGTK__
1042
1043 #include "gtk/gtk.h"
1044 #include "gdk/gdk.h"
1045 #include "gdk/gdkx.h"
1046
1047 #if (GTK_MINOR_VERSION > 0)
1048 #include "gdk/gdkrgb.h"
1049 #endif
1050
1051 wxBitmap wxImage::ConvertToBitmap() const
1052 {
1053     wxBitmap bitmap;
1054
1055     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
1056
1057     int width = GetWidth();
1058     int height = GetHeight();
1059
1060     bitmap.SetHeight( height );
1061     bitmap.SetWidth( width );
1062
1063     bitmap.SetPixmap( gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, -1 ) );
1064
1065      // Retrieve depth
1066
1067     GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
1068     if (visual == NULL) visual = gdk_visual_get_system();
1069     int bpp = visual->depth;
1070
1071     bitmap.SetDepth( bpp );
1072
1073     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1074     if (bpp < 8) bpp = 8;
1075
1076 #if (GTK_MINOR_VERSION > 0)
1077
1078     if (!HasMask() && (bpp > 8))
1079     {
1080         static bool s_hasInitialized = FALSE;
1081
1082         if (!s_hasInitialized)
1083         {
1084             gdk_rgb_init();
1085             s_hasInitialized = TRUE;
1086         }
1087
1088         GdkGC *gc = gdk_gc_new( bitmap.GetPixmap() );
1089
1090         gdk_draw_rgb_image( bitmap.GetPixmap(),
1091                             gc,
1092                             0, 0,
1093                             width, height,
1094                             GDK_RGB_DITHER_NONE,
1095                             GetData(),
1096                             width*3 );
1097
1098         gdk_gc_unref( gc );
1099
1100         return bitmap;
1101     }
1102
1103 #endif
1104
1105     // Create picture image
1106
1107     GdkImage *data_image =
1108         gdk_image_new( GDK_IMAGE_FASTEST, gdk_visual_get_system(), width, height );
1109
1110     // Create mask image
1111
1112     GdkImage *mask_image = (GdkImage*) NULL;
1113
1114     if (HasMask())
1115     {
1116         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1117
1118         mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1119
1120         wxMask *mask = new wxMask();
1121         mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1122
1123         bitmap.SetMask( mask );
1124     }
1125
1126     // Render
1127
1128     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1129     byte_order b_o = RGB;
1130
1131     if (bpp >= 24)
1132     {
1133         GdkVisual *visual = gdk_visual_get_system();
1134         if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
1135         else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RGB;
1136         else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
1137         else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
1138         else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
1139         else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
1140     }
1141
1142     int r_mask = GetMaskRed();
1143     int g_mask = GetMaskGreen();
1144     int b_mask = GetMaskBlue();
1145
1146     unsigned char* data = GetData();
1147
1148     int index = 0;
1149     for (int y = 0; y < height; y++)
1150     {
1151         for (int x = 0; x < width; x++)
1152         {
1153             int r = data[index];
1154             index++;
1155             int g = data[index];
1156             index++;
1157             int b = data[index];
1158             index++;
1159
1160             if (HasMask())
1161             {
1162                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1163                     gdk_image_put_pixel( mask_image, x, y, 1 );
1164                 else
1165                     gdk_image_put_pixel( mask_image, x, y, 0 );
1166             }
1167
1168             if (HasMask())
1169             {
1170                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1171                     gdk_image_put_pixel( mask_image, x, y, 1 );
1172                 else
1173                     gdk_image_put_pixel( mask_image, x, y, 0 );
1174             }
1175
1176             switch (bpp)
1177             {
1178             case 8:
1179                 {
1180                     int pixel = -1;
1181                     if (wxTheApp->m_colorCube)
1182                     {
1183                         pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1184                     }
1185                     else
1186                     {
1187                         GdkColormap *cmap = gtk_widget_get_default_colormap();
1188                         GdkColor *colors = cmap->colors;
1189                         int max = 3 * (65536);
1190
1191                         for (int i = 0; i < cmap->size; i++)
1192                         {
1193                             int rdiff = (r << 8) - colors[i].red;
1194                             int gdiff = (g << 8) - colors[i].green;
1195                             int bdiff = (b << 8) - colors[i].blue;
1196                             int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
1197                             if (sum < max) { pixel = i; max = sum; }
1198                         }
1199                     }
1200
1201                     gdk_image_put_pixel( data_image, x, y, pixel );
1202
1203                     break;
1204                 }
1205             case 15:
1206                 {
1207                     guint32 pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1208                     gdk_image_put_pixel( data_image, x, y, pixel );
1209                     break;
1210                 }
1211             case 16:
1212                 {
1213                     guint32 pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1214                     gdk_image_put_pixel( data_image, x, y, pixel );
1215                     break;
1216                 }
1217             case 32:
1218             case 24:
1219                 {
1220                     guint32 pixel = 0;
1221                     switch (b_o)
1222                     {
1223                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1224                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1225                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1226                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1227                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1228                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1229                     }
1230                     gdk_image_put_pixel( data_image, x, y, pixel );
1231                 }
1232             default: break;
1233             }
1234         } // for
1235     }  // for
1236
1237     // Blit picture
1238
1239     GdkGC *data_gc = gdk_gc_new( bitmap.GetPixmap() );
1240
1241     gdk_draw_image( bitmap.GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
1242
1243     gdk_image_destroy( data_image );
1244     gdk_gc_unref( data_gc );
1245
1246     // Blit mask
1247
1248     if (HasMask())
1249     {
1250         GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1251
1252         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1253
1254         gdk_image_destroy( mask_image );
1255         gdk_gc_unref( mask_gc );
1256     }
1257
1258     return bitmap;
1259 }
1260
1261 wxImage::wxImage( const wxBitmap &bitmap )
1262 {
1263     wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1264
1265     GdkImage *gdk_image = (GdkImage*) NULL;
1266     if (bitmap.GetPixmap())
1267     {
1268         gdk_image = gdk_image_get( bitmap.GetPixmap(),
1269             0, 0,
1270             bitmap.GetWidth(), bitmap.GetHeight() );
1271     } else
1272     if (bitmap.GetBitmap())
1273     {
1274         gdk_image = gdk_image_get( bitmap.GetBitmap(),
1275             0, 0,
1276             bitmap.GetWidth(), bitmap.GetHeight() );
1277     } else
1278     {
1279         wxFAIL_MSG( wxT("Ill-formed bitmap") );
1280     }
1281
1282     wxCHECK_RET( gdk_image, wxT("couldn't create image") );
1283
1284     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1285     char unsigned *data = GetData();
1286
1287     if (!data)
1288     {
1289         gdk_image_destroy( gdk_image );
1290         wxFAIL_MSG( wxT("couldn't create image") );
1291         return;
1292     }
1293
1294     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1295     if (bitmap.GetMask())
1296     {
1297         gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1298             0, 0,
1299             bitmap.GetWidth(), bitmap.GetHeight() );
1300
1301         SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1302     }
1303
1304     GdkVisual *visual = (GdkVisual*) NULL;
1305     if (bitmap.GetPixmap())
1306         visual = gdk_window_get_visual( bitmap.GetPixmap() );
1307     else
1308         visual = gdk_window_get_visual( bitmap.GetBitmap() );
1309
1310     if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent );
1311     int bpp = visual->depth;
1312     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1313
1314     GdkColormap *cmap = gtk_widget_get_default_colormap();
1315
1316     long pos = 0;
1317     for (int j = 0; j < bitmap.GetHeight(); j++)
1318     {
1319         for (int i = 0; i < bitmap.GetWidth(); i++)
1320         {
1321             wxInt32 pixel = gdk_image_get_pixel( gdk_image, i, j );
1322             // pixel = wxINT32_SWAP_ON_BE( pixel );
1323             if (bpp <= 8)
1324             {
1325                 data[pos] = cmap->colors[pixel].red >> 8;
1326                 data[pos+1] = cmap->colors[pixel].green >> 8;
1327                 data[pos+2] = cmap->colors[pixel].blue >> 8;
1328             } else if (bpp == 15)
1329             {
1330                 data[pos] = (pixel >> 7) & 0xf8;
1331                 data[pos+1] = (pixel >> 2) & 0xf8;
1332                 data[pos+2] = (pixel << 3) & 0xf8;
1333             } else if (bpp == 16)
1334             {
1335                 data[pos] = (pixel >> 8) & 0xf8;
1336                 data[pos+1] = (pixel >> 3) & 0xfc;
1337                 data[pos+2] = (pixel << 3) & 0xf8;
1338             } else
1339             {
1340                 data[pos] = (pixel >> 16) & 0xff;
1341                 data[pos+1] = (pixel >> 8) & 0xff;
1342                 data[pos+2] = pixel & 0xff;
1343             }
1344
1345             if (gdk_image_mask)
1346             {
1347                 int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1348                 if (mask_pixel == 0)
1349                 {
1350                     data[pos] = 16;
1351                     data[pos+1] = 16;
1352                     data[pos+2] = 16;
1353                 }
1354             }
1355
1356             pos += 3;
1357         }
1358     }
1359
1360     gdk_image_destroy( gdk_image );
1361     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1362 }
1363
1364 #endif
1365
1366 //-----------------------------------------------------------------------------
1367 // Motif conversion routines
1368 //-----------------------------------------------------------------------------
1369
1370 #ifdef __WXMOTIF__
1371
1372 #include <Xm/Xm.h>
1373 #include "wx/utils.h"
1374 #include <math.h>
1375
1376 wxBitmap wxImage::ConvertToBitmap() const
1377 {
1378     wxBitmap bitmap;
1379
1380     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
1381
1382     int width = GetWidth();
1383     int height = GetHeight();
1384
1385     bitmap.SetHeight( height );
1386     bitmap.SetWidth( width );
1387
1388     Display *dpy = (Display*) wxGetDisplay();
1389     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1390     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1391
1392     // Create image
1393
1394     XImage *data_image = XCreateImage( dpy, vis, bpp, ZPixmap, 0, 0, width, height, 32, 0 );
1395     data_image->data = (char*) malloc( data_image->bytes_per_line * data_image->height );
1396
1397     bitmap.Create( width, height, bpp );
1398
1399     /*
1400     // Create mask
1401
1402       GdkImage *mask_image = (GdkImage*) NULL;
1403
1404         if (HasMask())
1405         {
1406         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1407
1408           mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1409
1410             wxMask *mask = new wxMask();
1411             mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1412
1413               bitmap.SetMask( mask );
1414               }
1415     */
1416
1417     // Retrieve depth info
1418
1419     XVisualInfo vinfo_template;
1420     XVisualInfo *vi;
1421
1422     vinfo_template.visual = vis;
1423     vinfo_template.visualid = XVisualIDFromVisual( vis );
1424     vinfo_template.depth = bpp;
1425     int nitem = 0;
1426
1427     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1428
1429     wxCHECK_MSG( vi, wxNullBitmap, wxT("no visual") );
1430
1431     XFree( vi );
1432
1433     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1434     if (bpp < 8) bpp = 8;
1435
1436     // Render
1437
1438     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1439     byte_order b_o = RGB;
1440
1441     if (bpp >= 24)
1442     {
1443         if ((vi->red_mask > vi->green_mask) && (vi->green_mask > vi->blue_mask))      b_o = RGB;
1444         else if ((vi->red_mask > vi->blue_mask) && (vi->blue_mask > vi->green_mask))  b_o = RGB;
1445         else if ((vi->blue_mask > vi->red_mask) && (vi->red_mask > vi->green_mask))   b_o = BRG;
1446         else if ((vi->blue_mask > vi->green_mask) && (vi->green_mask > vi->red_mask)) b_o = BGR;
1447         else if ((vi->green_mask > vi->red_mask) && (vi->red_mask > vi->blue_mask))   b_o = GRB;
1448         else if ((vi->green_mask > vi->blue_mask) && (vi->blue_mask > vi->red_mask))  b_o = GBR;
1449     }
1450
1451     /*
1452     int r_mask = GetMaskRed();
1453     int g_mask = GetMaskGreen();
1454     int b_mask = GetMaskBlue();
1455     */
1456
1457     XColor colors[256];
1458     if (bpp == 8)
1459     {
1460         Colormap cmap = (Colormap) wxTheApp->GetMainColormap( dpy );
1461
1462         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1463         XQueryColors( dpy, cmap, colors, 256 );
1464     }
1465
1466     unsigned char* data = GetData();
1467
1468     int index = 0;
1469     for (int y = 0; y < height; y++)
1470     {
1471         for (int x = 0; x < width; x++)
1472         {
1473             int r = data[index];
1474             index++;
1475             int g = data[index];
1476             index++;
1477             int b = data[index];
1478             index++;
1479
1480             /*
1481             if (HasMask())
1482             {
1483             if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1484             gdk_image_put_pixel( mask_image, x, y, 1 );
1485             else
1486             gdk_image_put_pixel( mask_image, x, y, 0 );
1487             }
1488             */
1489
1490             switch (bpp)
1491             {
1492             case 8:
1493                 {
1494                     int pixel = -1;
1495                     /*
1496                     if (wxTheApp->m_colorCube)
1497                     {
1498                     pixel = wxTheApp->m_colorCube
1499                     [ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1500                     }
1501                     else
1502                     {
1503                     */
1504                     int max = 3 * (65536);
1505                     for (int i = 0; i < 256; i++)
1506                     {
1507                         int rdiff = (r << 8) - colors[i].red;
1508                         int gdiff = (g << 8) - colors[i].green;
1509                         int bdiff = (b << 8) - colors[i].blue;
1510                         int sum = abs (rdiff) + abs (gdiff) + abs (bdiff);
1511                         if (sum < max) { pixel = i; max = sum; }
1512                     }
1513                     /*
1514                     }
1515                     */
1516                     XPutPixel( data_image, x, y, pixel );
1517                     break;
1518                 }
1519             case 15:
1520                 {
1521                     int pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1522                     XPutPixel( data_image, x, y, pixel );
1523                     break;
1524                 }
1525             case 16:
1526                 {
1527                     int pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1528                     XPutPixel( data_image, x, y, pixel );
1529                     break;
1530                 }
1531             case 32:
1532             case 24:
1533                 {
1534                     int pixel = 0;
1535                     switch (b_o)
1536                     {
1537                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1538                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1539                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1540                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1541                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1542                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1543                     }
1544                     XPutPixel( data_image, x, y, pixel );
1545                 }
1546             default: break;
1547             }
1548         } // for
1549     }  // for
1550
1551     // Blit picture
1552
1553     XGCValues gcvalues;
1554     gcvalues.foreground = BlackPixel( dpy, DefaultScreen( dpy ) );
1555     GC gc = XCreateGC( dpy, RootWindow ( dpy, DefaultScreen(dpy) ), GCForeground, &gcvalues );
1556     XPutImage( dpy, (Drawable)bitmap.GetPixmap(), gc, data_image, 0, 0, 0, 0, width, height );
1557
1558     XDestroyImage( data_image );
1559     XFreeGC( dpy, gc );
1560
1561     /*
1562     // Blit mask
1563
1564       if (HasMask())
1565       {
1566       GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1567
1568         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1569
1570           gdk_image_destroy( mask_image );
1571           gdk_gc_unref( mask_gc );
1572           }
1573     */
1574
1575     return bitmap;
1576 }
1577
1578 wxImage::wxImage( const wxBitmap &bitmap )
1579 {
1580     wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1581
1582     Display *dpy = (Display*) wxGetDisplay();
1583     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1584     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1585
1586     XImage *ximage = XGetImage( dpy,
1587         (Drawable)bitmap.GetPixmap(),
1588         0, 0,
1589         bitmap.GetWidth(), bitmap.GetHeight(),
1590         AllPlanes, ZPixmap );
1591
1592     wxCHECK_RET( ximage, wxT("couldn't create image") );
1593
1594     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1595     char unsigned *data = GetData();
1596
1597     if (!data)
1598     {
1599         XDestroyImage( ximage );
1600         wxFAIL_MSG( wxT("couldn't create image") );
1601         return;
1602     }
1603
1604     /*
1605     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1606     if (bitmap.GetMask())
1607     {
1608     gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1609     0, 0,
1610     bitmap.GetWidth(), bitmap.GetHeight() );
1611
1612       SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1613       }
1614     */
1615
1616     // Retrieve depth info
1617
1618     XVisualInfo vinfo_template;
1619     XVisualInfo *vi;
1620
1621     vinfo_template.visual = vis;
1622     vinfo_template.visualid = XVisualIDFromVisual( vis );
1623     vinfo_template.depth = bpp;
1624     int nitem = 0;
1625
1626     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1627
1628     wxCHECK_RET( vi, wxT("no visual") );
1629
1630     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1631
1632     XFree( vi );
1633
1634     XColor colors[256];
1635     if (bpp == 8)
1636     {
1637         Colormap cmap = (Colormap)wxTheApp->GetMainColormap( dpy );
1638
1639         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1640         XQueryColors( dpy, cmap, colors, 256 );
1641     }
1642
1643     long pos = 0;
1644     for (int j = 0; j < bitmap.GetHeight(); j++)
1645     {
1646         for (int i = 0; i < bitmap.GetWidth(); i++)
1647         {
1648             int pixel = XGetPixel( ximage, i, j );
1649             if (bpp <= 8)
1650             {
1651                 data[pos] = colors[pixel].red >> 8;
1652                 data[pos+1] = colors[pixel].green >> 8;
1653                 data[pos+2] = colors[pixel].blue >> 8;
1654             } else if (bpp == 15)
1655             {
1656                 data[pos] = (pixel >> 7) & 0xf8;
1657                 data[pos+1] = (pixel >> 2) & 0xf8;
1658                 data[pos+2] = (pixel << 3) & 0xf8;
1659             } else if (bpp == 16)
1660             {
1661                 data[pos] = (pixel >> 8) & 0xf8;
1662                 data[pos+1] = (pixel >> 3) & 0xfc;
1663                 data[pos+2] = (pixel << 3) & 0xf8;
1664             } else
1665             {
1666                 data[pos] = (pixel >> 16) & 0xff;
1667                 data[pos+1] = (pixel >> 8) & 0xff;
1668                 data[pos+2] = pixel & 0xff;
1669             }
1670
1671             /*
1672             if (gdk_image_mask)
1673             {
1674             int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1675             if (mask_pixel == 0)
1676             {
1677             data[pos] = 16;
1678             data[pos+1] = 16;
1679             data[pos+2] = 16;
1680             }
1681             }
1682             */
1683
1684             pos += 3;
1685         }
1686     }
1687
1688     XDestroyImage( ximage );
1689     /*
1690     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1691     */
1692 }
1693 #endif
1694
1695 #ifdef __WXPM__
1696 // OS/2 Presentation manager conversion routings
1697
1698 wxBitmap wxImage::ConvertToBitmap() const
1699 {
1700     if ( !Ok() )
1701         return wxNullBitmap;
1702     wxBitmap bitmap; // remove
1703 // TODO:
1704 /*
1705     int sizeLimit = 1024*768*3;
1706
1707     // width and height of the device-dependent bitmap
1708     int width = GetWidth();
1709     int bmpHeight = GetHeight();
1710
1711     // calc the number of bytes per scanline and padding
1712     int bytePerLine = width*3;
1713     int sizeDWORD = sizeof( DWORD );
1714     int lineBoundary = bytePerLine % sizeDWORD;
1715     int padding = 0;
1716     if( lineBoundary > 0 )
1717     {
1718         padding = sizeDWORD - lineBoundary;
1719         bytePerLine += padding;
1720     }
1721     // calc the number of DIBs and heights of DIBs
1722     int numDIB = 1;
1723     int hRemain = 0;
1724     int height = sizeLimit/bytePerLine;
1725     if( height >= bmpHeight )
1726         height = bmpHeight;
1727     else
1728     {
1729         numDIB =  bmpHeight / height;
1730         hRemain = bmpHeight % height;
1731         if( hRemain >0 )  numDIB++;
1732     }
1733
1734     // set bitmap parameters
1735     wxBitmap bitmap;
1736     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
1737     bitmap.SetWidth( width );
1738     bitmap.SetHeight( bmpHeight );
1739     bitmap.SetDepth( wxDisplayDepth() );
1740
1741     // create a DIB header
1742     int headersize = sizeof(BITMAPINFOHEADER);
1743     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
1744     wxCHECK_MSG( lpDIBh, bitmap, wxT("could not allocate memory for DIB header") );
1745     // Fill in the DIB header
1746     lpDIBh->bmiHeader.biSize = headersize;
1747     lpDIBh->bmiHeader.biWidth = (DWORD)width;
1748     lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
1749     lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
1750     //   the general formula for biSizeImage:
1751     //      ( ( ( ((DWORD)width*24) +31 ) & ~31 ) >> 3 ) * height;
1752     lpDIBh->bmiHeader.biPlanes = 1;
1753     lpDIBh->bmiHeader.biBitCount = 24;
1754     lpDIBh->bmiHeader.biCompression = BI_RGB;
1755     lpDIBh->bmiHeader.biClrUsed = 0;
1756     // These seem not really needed for our purpose here.
1757     lpDIBh->bmiHeader.biClrImportant = 0;
1758     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
1759     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
1760     // memory for DIB data
1761     unsigned char *lpBits;
1762     lpBits = (unsigned char *)malloc( lpDIBh->bmiHeader.biSizeImage );
1763     if( !lpBits )
1764     {
1765         wxFAIL_MSG( wxT("could not allocate memory for DIB") );
1766         free( lpDIBh );
1767         return bitmap;
1768     }
1769
1770     // create and set the device-dependent bitmap
1771     HDC hdc = ::GetDC(NULL);
1772     HDC memdc = ::CreateCompatibleDC( hdc );
1773     HBITMAP hbitmap;
1774     hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight );
1775     ::SelectObject( memdc, hbitmap);
1776
1777     // copy image data into DIB data and then into DDB (in a loop)
1778     unsigned char *data = GetData();
1779     int i, j, n;
1780     int origin = 0;
1781     unsigned char *ptdata = data;
1782     unsigned char *ptbits;
1783
1784     for( n=0; n<numDIB; n++ )
1785     {
1786         if( numDIB > 1 && n == numDIB-1 && hRemain > 0 )
1787         {
1788             // redefine height and size of the (possibly) last smaller DIB
1789             // memory is not reallocated
1790             height = hRemain;
1791             lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
1792             lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
1793         }
1794         ptbits = lpBits;
1795
1796         for( j=0; j<height; j++ )
1797         {
1798             for( i=0; i<width; i++ )
1799             {
1800                 *(ptbits++) = *(ptdata+2);
1801                 *(ptbits++) = *(ptdata+1);
1802                 *(ptbits++) = *(ptdata  );
1803                 ptdata += 3;
1804             }
1805             for( i=0; i< padding; i++ )   *(ptbits++) = 0;
1806         }
1807         ::StretchDIBits( memdc, 0, origin, width, height,\
1808             0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
1809         origin += height;
1810         // if numDIB = 1,  lines below can also be used
1811         //    hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
1812         // The above line is equivalent to the following two lines.
1813         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
1814         //    ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
1815         // or the following lines
1816         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
1817         //    HDC memdc = ::CreateCompatibleDC( hdc );
1818         //    ::SelectObject( memdc, hbitmap);
1819         //    ::SetDIBitsToDevice( memdc, 0, 0, width, height,
1820         //            0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
1821         //    ::SelectObject( memdc, 0 );
1822         //    ::DeleteDC( memdc );
1823     }
1824     bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
1825
1826     // similarly, created an mono-bitmap for the possible mask
1827     if( HasMask() )
1828     {
1829         hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL );
1830         ::SelectObject( memdc, hbitmap);
1831         if( numDIB == 1 )   height = bmpHeight;
1832         else                height = sizeLimit/bytePerLine;
1833         lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
1834         lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
1835         origin = 0;
1836         unsigned char r = GetMaskRed();
1837         unsigned char g = GetMaskGreen();
1838         unsigned char b = GetMaskBlue();
1839         unsigned char zero = 0, one = 255;
1840         ptdata = data;
1841         for( n=0; n<numDIB; n++ )
1842         {
1843             if( numDIB > 1 && n == numDIB - 1 && hRemain > 0 )
1844             {
1845                 // redefine height and size of the (possibly) last smaller DIB
1846                 // memory is not reallocated
1847                 height = hRemain;
1848                 lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
1849                 lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
1850             }
1851             ptbits = lpBits;
1852             for( int j=0; j<height; j++ )
1853             {
1854                 for(i=0; i<width; i++ )
1855                 {
1856                     if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
1857                     {
1858                         *(ptbits++) = one;
1859                         *(ptbits++) = one;
1860                         *(ptbits++) = one;
1861                     }
1862                     else
1863                     {
1864                         *(ptbits++) = zero;
1865                         *(ptbits++) = zero;
1866                         *(ptbits++) = zero;
1867                     }
1868                 }
1869                 for( i=0; i< padding; i++ )   *(ptbits++) = zero;
1870             }
1871             ::StretchDIBits( memdc, 0, origin, width, height,\
1872                 0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
1873             origin += height;
1874         }
1875         // create a wxMask object
1876         wxMask *mask = new wxMask();
1877         mask->SetMaskBitmap( (WXHBITMAP) hbitmap );
1878         bitmap.SetMask( mask );
1879     }
1880
1881     // free allocated resources
1882     ::SelectObject( memdc, 0 );
1883     ::DeleteDC( memdc );
1884     ::ReleaseDC(NULL, hdc);
1885     free(lpDIBh);
1886     free(lpBits);
1887
1888     // check the wxBitmap object
1889     if( bitmap.GetHBITMAP() )
1890         bitmap.SetOk( TRUE );
1891     else
1892         bitmap.SetOk( FALSE );
1893 */
1894     return bitmap;
1895 }
1896
1897 wxImage::wxImage( const wxBitmap &bitmap )
1898 {
1899     // check the bitmap
1900     if( !bitmap.Ok() )
1901     {
1902         wxFAIL_MSG( wxT("invalid bitmap") );
1903         return;
1904     }
1905
1906     // create an wxImage object
1907     int width = bitmap.GetWidth();
1908     int height = bitmap.GetHeight();
1909     Create( width, height );
1910     unsigned char *data = GetData();
1911     if( !data )
1912     {
1913         wxFAIL_MSG( wxT("could not allocate data for image") );
1914         return;
1915     }
1916
1917     // calc the number of bytes per scanline and padding in the DIB
1918     int bytePerLine = width*3;
1919     int sizeDWORD = sizeof( DWORD );
1920     int lineBoundary =  bytePerLine % sizeDWORD;
1921     int padding = 0;
1922     if( lineBoundary > 0 )
1923     {
1924         padding = sizeDWORD - lineBoundary;
1925         bytePerLine += padding;
1926     }
1927 // TODO:
1928 /*
1929     // create a DIB header
1930     int headersize = sizeof(BITMAPINFOHEADER);
1931     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
1932     if( !lpDIBh )
1933     {
1934         wxFAIL_MSG( wxT("could not allocate data for DIB header") );
1935         free( data );
1936         return;
1937     }
1938     // Fill in the DIB header
1939     lpDIBh->bmiHeader.biSize = headersize;
1940     lpDIBh->bmiHeader.biWidth = width;
1941     lpDIBh->bmiHeader.biHeight = -height;
1942     lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
1943     lpDIBh->bmiHeader.biPlanes = 1;
1944     lpDIBh->bmiHeader.biBitCount = 24;
1945     lpDIBh->bmiHeader.biCompression = BI_RGB;
1946     lpDIBh->bmiHeader.biClrUsed = 0;
1947     // These seem not really needed for our purpose here.
1948     lpDIBh->bmiHeader.biClrImportant = 0;
1949     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
1950     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
1951     // memory for DIB data
1952     unsigned char *lpBits;
1953     lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
1954     if( !lpBits )
1955     {
1956         wxFAIL_MSG( wxT("could not allocate data for DIB") );
1957         free( data );
1958         free( lpDIBh );
1959         return;
1960     }
1961
1962     // copy data from the device-dependent bitmap to the DIB
1963     HDC hdc = ::GetDC(NULL);
1964     HBITMAP hbitmap;
1965     hbitmap = (HBITMAP) bitmap.GetHBITMAP();
1966     ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
1967
1968     // copy DIB data into the wxImage object
1969     int i, j;
1970     unsigned char *ptdata = data;
1971     unsigned char *ptbits = lpBits;
1972     for( i=0; i<height; i++ )
1973     {
1974         for( j=0; j<width; j++ )
1975         {
1976             *(ptdata++) = *(ptbits+2);
1977             *(ptdata++) = *(ptbits+1);
1978             *(ptdata++) = *(ptbits  );
1979             ptbits += 3;
1980         }
1981         ptbits += padding;
1982     }
1983
1984     // similarly, set data according to the possible mask bitmap
1985     if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
1986     {
1987         hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
1988         // memory DC created, color set, data copied, and memory DC deleted
1989         HDC memdc = ::CreateCompatibleDC( hdc );
1990         ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
1991         ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
1992         ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
1993         ::DeleteDC( memdc );
1994         // background color set to RGB(16,16,16) in consistent with wxGTK
1995         unsigned char r=16, g=16, b=16;
1996         ptdata = data;
1997         ptbits = lpBits;
1998         for( i=0; i<height; i++ )
1999         {
2000             for( j=0; j<width; j++ )
2001             {
2002                 if( *ptbits != 0 )
2003                     ptdata += 3;
2004                 else
2005                 {
2006                     *(ptdata++)  = r;
2007                     *(ptdata++)  = g;
2008                     *(ptdata++)  = b;
2009                 }
2010                 ptbits += 3;
2011             }
2012             ptbits += padding;
2013         }
2014         SetMaskColour( r, g, b );
2015         SetMask( TRUE );
2016     }
2017     else
2018     {
2019         SetMask( FALSE );
2020     }
2021     // free allocated resources
2022     ::ReleaseDC(NULL, hdc);
2023     free(lpDIBh);
2024     free(lpBits);
2025 */
2026 }
2027
2028 #endif
2029
2030 // A module to allow wxImage initialization/cleanup
2031 // without calling these functions from app.cpp or from
2032 // the user's application.
2033
2034 class wxImageModule: public wxModule
2035 {
2036 DECLARE_DYNAMIC_CLASS(wxImageModule)
2037 public:
2038     wxImageModule() {}
2039     bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; };
2040     void OnExit() { wxImage::CleanUpHandlers(); };
2041 };
2042
2043 IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)