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, _T("invalid image") );
 158
 159     wxCHECK_MSG( (width > 0) && (height > 0), image, _T("invalid image size") );
 160
 161     image.Create( width, height );
 162
 163     char unsigned *data = image.GetData();
 164
 165     wxCHECK_MSG( data, image, _T("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 void wxImage::SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b )
 193 {
 194     wxCHECK_RET( Ok(), _T("invalid image") );
 195
 196     int w = M_IMGDATA->m_width;
 197     int h = M_IMGDATA->m_height;
 198
 199     wxCHECK_RET( (x>=0) && (y>=0) && (x<w) && (y<h), _T("invalid image index") );
 200
 201     long pos = (y * w + x) * 3;
 202
 203     M_IMGDATA->m_data[ pos   ] = r;
 204     M_IMGDATA->m_data[ pos+1 ] = g;
 205     M_IMGDATA->m_data[ pos+2 ] = b;
 206 }
 207
 208 unsigned char wxImage::GetRed( int x, int y )
 209 {
 210     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 211
 212     int w = M_IMGDATA->m_width;
 213     int h = M_IMGDATA->m_height;
 214
 215     wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, _T("invalid image index") );
 216
 217     long pos = (y * w + x) * 3;
 218
 219     return M_IMGDATA->m_data[pos];
 220 }
 221
 222 unsigned char wxImage::GetGreen( int x, int y )
 223 {
 224     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 225
 226     int w = M_IMGDATA->m_width;
 227     int h = M_IMGDATA->m_height;
 228
 229     wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, _T("invalid image index") );
 230
 231     long pos = (y * w + x) * 3;
 232
 233     return M_IMGDATA->m_data[pos+1];
 234 }
 235
 236 unsigned char wxImage::GetBlue( int x, int y )
 237 {
 238     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 239
 240     int w = M_IMGDATA->m_width;
 241     int h = M_IMGDATA->m_height;
 242
 243     wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, _T("invalid image index") );
 244
 245     long pos = (y * w + x) * 3;
 246
 247     return M_IMGDATA->m_data[pos+2];
 248 }
 249
 250 bool wxImage::Ok() const
 251 {
 252     return (M_IMGDATA && M_IMGDATA->m_ok);
 253 }
 254
 255 char unsigned *wxImage::GetData() const
 256 {
 257     wxCHECK_MSG( Ok(), (char unsigned *)NULL, _T("invalid image") );
 258
 259     return M_IMGDATA->m_data;
 260 }
 261
 262 void wxImage::SetData( char unsigned *data )
 263 {
 264     wxCHECK_RET( Ok(), _T("invalid image") );
 265
 266     memcpy(M_IMGDATA->m_data, data, M_IMGDATA->m_width * M_IMGDATA->m_height * 3);
 267 }
 268
 269 void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b )
 270 {
 271     wxCHECK_RET( Ok(), _T("invalid image") );
 272
 273     M_IMGDATA->m_maskRed = r;
 274     M_IMGDATA->m_maskGreen = g;
 275     M_IMGDATA->m_maskBlue = b;
 276     M_IMGDATA->m_hasMask = TRUE;
 277 }
 278
 279 unsigned char wxImage::GetMaskRed() const
 280 {
 281     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 282
 283     return M_IMGDATA->m_maskRed;
 284 }
 285
 286 unsigned char wxImage::GetMaskGreen() const
 287 {
 288     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 289
 290     return M_IMGDATA->m_maskGreen;
 291 }
 292
 293 unsigned char wxImage::GetMaskBlue() const
 294 {
 295     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 296
 297     return M_IMGDATA->m_maskBlue;
 298 }
 299
 300 void wxImage::SetMask( bool mask )
 301 {
 302     wxCHECK_RET( Ok(), _T("invalid image") );
 303
 304     M_IMGDATA->m_hasMask = mask;
 305 }
 306
 307 bool wxImage::HasMask() const
 308 {
 309     wxCHECK_MSG( Ok(), FALSE, _T("invalid image") );
 310
 311     return M_IMGDATA->m_hasMask;
 312 }
 313
 314 int wxImage::GetWidth() const
 315 {
 316     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 317
 318     return M_IMGDATA->m_width;
 319 }
 320
 321 int wxImage::GetHeight() const
 322 {
 323     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 324
 325     return M_IMGDATA->m_height;
 326 }
 327
 328 bool wxImage::LoadFile( const wxString& filename, long type )
 329 {
 330 #if wxUSE_STREAMS
 331     if (wxFileExists(filename))
 332     {
 333         wxFileInputStream stream(filename);
 334         return LoadFile(stream, type);
 335     }
 336
 337     else {
 338         wxLogError( _T("Can't load image from file '%s': file does not exist."), filename.c_str() );
 339
 340         return FALSE;
 341     }
 342 #else // !wxUSE_STREAMS
 343     return FALSE;
 344 #endif // wxUSE_STREAMS
 345 }
 346
 347 bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype )
 348 {
 349 #if wxUSE_STREAMS
 350     if (wxFileExists(filename))
 351     {
 352         wxFileInputStream stream(filename);
 353         return LoadFile(stream, mimetype);
 354     }
 355
 356     else {
 357         wxLogError( _T("Can't load image from file '%s': file does not exist."), filename.c_str() );
 358
 359         return FALSE;
 360     }
 361 #else // !wxUSE_STREAMS
 362     return FALSE;
 363 #endif // wxUSE_STREAMS
 364 }
 365
 366 bool wxImage::SaveFile( const wxString& filename, int type )
 367 {
 368 #if wxUSE_STREAMS
 369     wxFileOutputStream stream(filename);
 370
 371     if ( stream.LastError() == wxStream_NOERROR )
 372         return SaveFile(stream, type);
 373     else
 374 #endif // wxUSE_STREAMS
 375         return FALSE;
 376 }
 377
 378 bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype )
 379 {
 380 #if wxUSE_STREAMS
 381     wxFileOutputStream stream(filename);
 382
 383     if ( stream.LastError() == wxStream_NOERROR )
 384         return SaveFile(stream, mimetype);
 385     else
 386 #endif // wxUSE_STREAMS
 387         return FALSE;
 388 }
 389
 390 #if wxUSE_STREAMS
 391 bool wxImage::LoadFile( wxInputStream& stream, long type )
 392 {
 393     UnRef();
 394
 395     m_refData = new wxImageRefData;
 396
 397     wxImageHandler *handler = FindHandler(type);
 398
 399     if (handler == NULL)
 400     {
 401         wxLogWarning( _T("No image handler for type %d defined."), type );
 402
 403         return FALSE;
 404     }
 405
 406     return handler->LoadFile( this, stream );
 407 }
 408
 409 bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype )
 410 {
 411     UnRef();
 412
 413     m_refData = new wxImageRefData;
 414
 415     wxImageHandler *handler = FindHandlerMime(mimetype);
 416
 417     if (handler == NULL)
 418     {
 419         wxLogWarning( _T("No image handler for type %s defined."), mimetype.GetData() );
 420
 421         return FALSE;
 422     }
 423
 424     return handler->LoadFile( this, stream );
 425 }
 426
 427 bool wxImage::SaveFile( wxOutputStream& stream, int type )
 428 {
 429     wxCHECK_MSG( Ok(), FALSE, _T("invalid image") );
 430
 431     wxImageHandler *handler = FindHandler(type);
 432
 433     if (handler == NULL)
 434     {
 435         wxLogWarning( _T("No image handler for type %d defined."), type );
 436
 437         return FALSE;
 438     }
 439
 440     return handler->SaveFile( this, stream );
 441 }
 442
 443 bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype )
 444 {
 445     wxCHECK_MSG( Ok(), FALSE, _T("invalid image") );
 446
 447     wxImageHandler *handler = FindHandlerMime(mimetype);
 448
 449     if (handler == NULL)
 450     {
 451         wxLogWarning( _T("No image handler for type %s defined."), mimetype.GetData() );
 452
 453         return FALSE;
 454     }
 455
 456     return handler->SaveFile( this, stream );
 457 }
 458 #endif // wxUSE_STREAMS
 459
 460 void wxImage::AddHandler( wxImageHandler *handler )
 461 {
 462     // make sure that the memory will be freed at the program end
 463     sm_handlers.DeleteContents(TRUE);
 464
 465     sm_handlers.Append( handler );
 466 }
 467
 468 void wxImage::InsertHandler( wxImageHandler *handler )
 469 {
 470     // make sure that the memory will be freed at the program end
 471     sm_handlers.DeleteContents(TRUE);
 472
 473     sm_handlers.Insert( handler );
 474 }
 475
 476 bool wxImage::RemoveHandler( const wxString& name )
 477 {
 478     wxImageHandler *handler = FindHandler(name);
 479     if (handler)
 480     {
 481         sm_handlers.DeleteObject(handler);
 482         return TRUE;
 483     }
 484     else
 485         return FALSE;
 486 }
 487
 488 wxImageHandler *wxImage::FindHandler( const wxString& name )
 489 {
 490     wxNode *node = sm_handlers.First();
 491     while (node)
 492     {
 493         wxImageHandler *handler = (wxImageHandler*)node->Data();
 494         if (handler->GetName().Cmp(name) == 0) return handler;
 495
 496         node = node->Next();
 497     }
 498     return (wxImageHandler *)NULL;
 499 }
 500
 501 wxImageHandler *wxImage::FindHandler( const wxString& extension, long bitmapType )
 502 {
 503     wxNode *node = sm_handlers.First();
 504     while (node)
 505     {
 506         wxImageHandler *handler = (wxImageHandler*)node->Data();
 507         if ( (handler->GetExtension().Cmp(extension) == 0) &&
 508             (bitmapType == -1 || handler->GetType() == bitmapType) )
 509             return handler;
 510         node = node->Next();
 511     }
 512     return (wxImageHandler*)NULL;
 513 }
 514
 515 wxImageHandler *wxImage::FindHandler( long bitmapType )
 516 {
 517     wxNode *node = sm_handlers.First();
 518     while (node)
 519     {
 520         wxImageHandler *handler = (wxImageHandler *)node->Data();
 521         if (handler->GetType() == bitmapType) return handler;
 522         node = node->Next();
 523     }
 524     return NULL;
 525 }
 526
 527 wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype )
 528 {
 529     wxNode *node = sm_handlers.First();
 530     while (node)
 531     {
 532         wxImageHandler *handler = (wxImageHandler *)node->Data();
 533         if (handler->GetMimeType().IsSameAs(mimetype, FALSE)) return handler;
 534         node = node->Next();
 535     }
 536     return NULL;
 537 }
 538
 539 void wxImage::InitStandardHandlers()
 540 {
 541     AddHandler( new wxBMPHandler );
 542 }
 543
 544 void wxImage::CleanUpHandlers()
 545 {
 546     wxNode *node = sm_handlers.First();
 547     while (node)
 548     {
 549         wxImageHandler *handler = (wxImageHandler *)node->Data();
 550         wxNode *next = node->Next();
 551         delete handler;
 552         delete node;
 553         node = next;
 554     }
 555 }
 556
 557 //-----------------------------------------------------------------------------
 558 // wxImageHandler
 559 //-----------------------------------------------------------------------------
 560
 561 #if !USE_SHARED_LIBRARIES
 562 IMPLEMENT_DYNAMIC_CLASS(wxImageHandler,wxObject)
 563 #endif
 564
 565 #if wxUSE_STREAMS
 566 bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream) )
 567 {
 568     return FALSE;
 569 }
 570
 571 bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream) )
 572 {
 573     return FALSE;
 574 }
 575 #endif // wxUSE_STREAMS
 576
 577 //-----------------------------------------------------------------------------
 578 // MSW conversion routines
 579 //-----------------------------------------------------------------------------
 580
 581 #ifdef __WXMSW__
 582
 583 wxBitmap wxImage::ConvertToBitmap() const
 584 {
 585     // sizeLimit is the MS upper limit for the DIB size
 586     int sizeLimit = 1024*768*3;
 587
 588     // width and height of the device-dependent bitmap
 589     int width = GetWidth();
 590     int bmpHeight = GetHeight();
 591
 592     // calc the number of bytes per scanline and padding
 593     int bytePerLine = width*3;
 594     int sizeDWORD = sizeof( DWORD );
 595     int lineBoundary = bytePerLine % sizeDWORD;
 596     int padding = 0;
 597     if( lineBoundary > 0 )
 598     {
 599         padding = sizeDWORD - lineBoundary;
 600         bytePerLine += padding;
 601     }
 602     // calc the number of DIBs and heights of DIBs
 603     int numDIB = 1;
 604     int hRemain = 0;
 605     int height = sizeLimit/bytePerLine;
 606     if( height >= bmpHeight )
 607         height = bmpHeight;
 608     else
 609     {
 610         numDIB =  bmpHeight / height;
 611         hRemain = bmpHeight % height;
 612         if( hRemain >0 )  numDIB++;
 613     }
 614
 615     // set bitmap parameters
 616     wxBitmap bitmap;
 617     wxCHECK_MSG( Ok(), bitmap, _T("invalid image") );
 618     bitmap.SetWidth( width );
 619     bitmap.SetHeight( bmpHeight );
 620     bitmap.SetDepth( wxDisplayDepth() );
 621
 622     // create a DIB header
 623     int headersize = sizeof(BITMAPINFOHEADER);
 624     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 625     wxCHECK_MSG( lpDIBh, bitmap, _T("could not allocate memory for DIB header") );
 626     // Fill in the DIB header
 627     lpDIBh->bmiHeader.biSize = headersize;
 628     lpDIBh->bmiHeader.biWidth = (DWORD)width;
 629     lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 630     lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 631     //   the general formula for biSizeImage:
 632     //      ( ( ( ((DWORD)width*24) +31 ) & ~31 ) >> 3 ) * height;
 633     lpDIBh->bmiHeader.biPlanes = 1;
 634     lpDIBh->bmiHeader.biBitCount = 24;
 635     lpDIBh->bmiHeader.biCompression = BI_RGB;
 636     lpDIBh->bmiHeader.biClrUsed = 0;
 637     // These seem not really needed for our purpose here.
 638     lpDIBh->bmiHeader.biClrImportant = 0;
 639     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 640     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
 641     // memory for DIB data
 642     unsigned char *lpBits;
 643     lpBits = (unsigned char *)malloc( lpDIBh->bmiHeader.biSizeImage );
 644     if( !lpBits )
 645     {
 646         wxFAIL_MSG( _T("could not allocate memory for DIB") );
 647         free( lpDIBh );
 648         return bitmap;
 649     }
 650
 651     // create and set the device-dependent bitmap
 652     HDC hdc = ::GetDC(NULL);
 653     HDC memdc = ::CreateCompatibleDC( hdc );
 654     HBITMAP hbitmap;
 655     hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight );
 656     ::SelectObject( memdc, hbitmap);
 657
 658     // copy image data into DIB data and then into DDB (in a loop)
 659     unsigned char *data = GetData();
 660     int i, j, n;
 661     int origin = 0;
 662     unsigned char *ptdata = data;
 663     unsigned char *ptbits;
 664
 665     for( n=0; n<numDIB; n++ )
 666     {
 667         if( numDIB > 1 && n == numDIB-1 && hRemain > 0 )
 668         {
 669             // redefine height and size of the (possibly) last smaller DIB
 670             // memory is not reallocated
 671             height = hRemain;
 672             lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 673             lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 674         }
 675         ptbits = lpBits;
 676
 677         for( j=0; j<height; j++ )
 678         {
 679             for( i=0; i<width; i++ )
 680             {
 681                 *(ptbits++) = *(ptdata+2);
 682                 *(ptbits++) = *(ptdata+1);
 683                 *(ptbits++) = *(ptdata  );
 684                 ptdata += 3;
 685             }
 686             for( i=0; i< padding; i++ )   *(ptbits++) = 0;
 687         }
 688         ::StretchDIBits( memdc, 0, origin, width, height,\
 689             0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
 690         origin += height;
 691         // if numDIB = 1,  lines below can also be used
 692         //    hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
 693         // The above line is equivalent to the following two lines.
 694         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
 695         //    ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
 696         // or the following lines
 697         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
 698         //    HDC memdc = ::CreateCompatibleDC( hdc );
 699         //    ::SelectObject( memdc, hbitmap);
 700         //    ::SetDIBitsToDevice( memdc, 0, 0, width, height,
 701         //          0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
 702         //    ::SelectObject( memdc, 0 );
 703         //    ::DeleteDC( memdc );
 704     }
 705     bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
 706
 707     // similarly, created an mono-bitmap for the possible mask
 708     if( HasMask() )
 709     {
 710         hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL );
 711         ::SelectObject( memdc, hbitmap);
 712         if( numDIB == 1 )   height = bmpHeight;
 713         else                height = sizeLimit/bytePerLine;
 714         lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 715         lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 716         origin = 0;
 717         unsigned char r = GetMaskRed();
 718         unsigned char g = GetMaskGreen();
 719         unsigned char b = GetMaskBlue();
 720         unsigned char zero = 0, one = 255;
 721         ptdata = data;
 722         for( n=0; n<numDIB; n++ )
 723         {
 724             if( numDIB > 1 && n == numDIB - 1 && hRemain > 0 )
 725             {
 726                 // redefine height and size of the (possibly) last smaller DIB
 727                 // memory is not reallocated
 728                 height = hRemain;
 729                 lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 730                 lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 731             }
 732             ptbits = lpBits;
 733             for( int j=0; j<height; j++ )
 734             {
 735                 for(i=0; i<width; i++ )
 736                 {
 737                     if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
 738                     {
 739                         *(ptbits++) = one;
 740                         *(ptbits++) = one;
 741                         *(ptbits++) = one;
 742                     }
 743                     else
 744                     {
 745                         *(ptbits++) = zero;
 746                         *(ptbits++) = zero;
 747                         *(ptbits++) = zero;
 748                     }
 749                 }
 750                 for( i=0; i< padding; i++ )   *(ptbits++) = zero;
 751             }
 752             ::StretchDIBits( memdc, 0, origin, width, height,\
 753                 0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
 754             origin += height;
 755         }
 756         // create a wxMask object
 757         wxMask *mask = new wxMask();
 758         mask->SetMaskBitmap( (WXHBITMAP) hbitmap );
 759         bitmap.SetMask( mask );
 760         // It will be deleted when the wxBitmap object is deleted (as of 01/1999)
 761         /* The following can also be used but is slow to run
 762         wxColour colour( GetMaskRed(), GetMaskGreen(), GetMaskBlue());
 763         wxMask *mask = new wxMask( bitmap, colour );
 764         bitmap.SetMask( mask );
 765         */
 766     }
 767
 768     // free allocated resources
 769     ::SelectObject( memdc, 0 );
 770     ::DeleteDC( memdc );
 771     ::ReleaseDC(NULL, hdc);
 772     free(lpDIBh);
 773     free(lpBits);
 774
 775     // check the wxBitmap object
 776     if( bitmap.GetHBITMAP() )
 777         bitmap.SetOk( TRUE );
 778     else
 779         bitmap.SetOk( FALSE );
 780
 781     return bitmap;
 782 }
 783
 784 wxImage::wxImage( const wxBitmap &bitmap )
 785 {
 786     // check the bitmap
 787     if( !bitmap.Ok() )
 788     {
 789         wxFAIL_MSG( _T("invalid bitmap") );
 790         return;
 791     }
 792
 793     // create an wxImage object
 794     int width = bitmap.GetWidth();
 795     int height = bitmap.GetHeight();
 796     Create( width, height );
 797     unsigned char *data = GetData();
 798     if( !data )
 799     {
 800         wxFAIL_MSG( _T("could not allocate data for image") );
 801         return;
 802     }
 803
 804     // calc the number of bytes per scanline and padding in the DIB
 805     int bytePerLine = width*3;
 806     int sizeDWORD = sizeof( DWORD );
 807     int lineBoundary =  bytePerLine % sizeDWORD;
 808     int padding = 0;
 809     if( lineBoundary > 0 )
 810     {
 811         padding = sizeDWORD - lineBoundary;
 812         bytePerLine += padding;
 813     }
 814
 815     // create a DIB header
 816     int headersize = sizeof(BITMAPINFOHEADER);
 817     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 818     if( !lpDIBh )
 819     {
 820         wxFAIL_MSG( _T("could not allocate data for DIB header") );
 821         free( data );
 822         return;
 823     }
 824     // Fill in the DIB header
 825     lpDIBh->bmiHeader.biSize = headersize;
 826     lpDIBh->bmiHeader.biWidth = width;
 827     lpDIBh->bmiHeader.biHeight = -height;
 828     lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
 829     lpDIBh->bmiHeader.biPlanes = 1;
 830     lpDIBh->bmiHeader.biBitCount = 24;
 831     lpDIBh->bmiHeader.biCompression = BI_RGB;
 832     lpDIBh->bmiHeader.biClrUsed = 0;
 833     // These seem not really needed for our purpose here.
 834     lpDIBh->bmiHeader.biClrImportant = 0;
 835     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 836     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
 837     // memory for DIB data
 838     unsigned char *lpBits;
 839     lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
 840     if( !lpBits )
 841     {
 842         wxFAIL_MSG( _T("could not allocate data for DIB") );
 843         free( data );
 844         free( lpDIBh );
 845         return;
 846     }
 847
 848     // copy data from the device-dependent bitmap to the DIB
 849     HDC hdc = ::GetDC(NULL);
 850     HBITMAP hbitmap;
 851     hbitmap = (HBITMAP) bitmap.GetHBITMAP();
 852     ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
 853
 854     // copy DIB data into the wxImage object
 855     int i, j;
 856     unsigned char *ptdata = data;
 857     unsigned char *ptbits = lpBits;
 858     for( i=0; i<height; i++ )
 859     {
 860         for( j=0; j<width; j++ )
 861         {
 862             *(ptdata++) = *(ptbits+2);
 863             *(ptdata++) = *(ptbits+1);
 864             *(ptdata++) = *(ptbits  );
 865             ptbits += 3;
 866         }
 867         ptbits += padding;
 868     }
 869
 870     // similarly, set data according to the possible mask bitmap
 871     if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
 872     {
 873         hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
 874         // memory DC created, color set, data copied, and memory DC deleted
 875         HDC memdc = ::CreateCompatibleDC( hdc );
 876         ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
 877         ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
 878         ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
 879         ::DeleteDC( memdc );
 880         // background color set to RGB(16,16,16) in consistent with wxGTK
 881         unsigned char r=16, g=16, b=16;
 882         ptdata = data;
 883         ptbits = lpBits;
 884         for( i=0; i<height; i++ )
 885         {
 886             for( j=0; j<width; j++ )
 887             {
 888                 if( *ptbits != 0 )
 889                     ptdata += 3;
 890                 else
 891                 {
 892                     *(ptdata++)  = r;
 893                     *(ptdata++)  = g;
 894                     *(ptdata++)  = b;
 895                 }
 896                 ptbits += 3;
 897             }
 898             ptbits += padding;
 899         }
 900         SetMaskColour( r, g, b );
 901         SetMask( TRUE );
 902     }
 903     else
 904     {
 905         SetMask( FALSE );
 906     }
 907     // free allocated resources
 908     ::ReleaseDC(NULL, hdc);
 909     free(lpDIBh);
 910     free(lpBits);
 911 }
 912
 913 #endif
 914
 915 //-----------------------------------------------------------------------------
 916 // GTK conversion routines
 917 //-----------------------------------------------------------------------------
 918
 919 #ifdef __WXGTK__
 920
 921 #include "gtk/gtk.h"
 922 #include "gdk/gdk.h"
 923 #include "gdk/gdkx.h"
 924
 925 #if (GTK_MINOR_VERSION > 0)
 926 #include "gdk/gdkrgb.h"
 927 #endif
 928
 929 wxBitmap wxImage::ConvertToBitmap() const
 930 {
 931     wxBitmap bitmap;
 932
 933     wxCHECK_MSG( Ok(), bitmap, _T("invalid image") );
 934
 935     int width = GetWidth();
 936     int height = GetHeight();
 937
 938     bitmap.SetHeight( height );
 939     bitmap.SetWidth( width );
 940
 941     bitmap.SetPixmap( gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, -1 ) );
 942
 943      // Retrieve depth
 944
 945     GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
 946     if (visual == NULL) visual = gdk_visual_get_system();
 947     int bpp = visual->depth;
 948
 949     bitmap.SetDepth( bpp );
 950
 951     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
 952     if (bpp < 8) bpp = 8;
 953
 954 #if (GTK_MINOR_VERSION > 0)
 955
 956     if (!HasMask() && (bpp > 8))
 957     {
 958         static bool s_hasInitialized = FALSE;
 959
 960         if (!s_hasInitialized)
 961         {
 962             gdk_rgb_init();
 963             s_hasInitialized = TRUE;
 964         }
 965
 966         GdkGC *gc = gdk_gc_new( bitmap.GetPixmap() );
 967
 968         gdk_draw_rgb_image( bitmap.GetPixmap(),
 969                             gc,
 970                             0, 0,
 971                             width, height,
 972                             GDK_RGB_DITHER_NONE,
 973                             GetData(),
 974                             width*3 );
 975
 976         gdk_gc_unref( gc );
 977
 978         return bitmap;
 979     }
 980
 981 #endif
 982
 983     // Create picture image
 984
 985     GdkImage *data_image =
 986         gdk_image_new( GDK_IMAGE_FASTEST, gdk_visual_get_system(), width, height );
 987
 988     // Create mask image
 989
 990     GdkImage *mask_image = (GdkImage*) NULL;
 991
 992     if (HasMask())
 993     {
 994         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 995
 996         mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
 997
 998         wxMask *mask = new wxMask();
 999         mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1000
1001         bitmap.SetMask( mask );
1002     }
1003
1004     // Render
1005
1006     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1007     byte_order b_o = RGB;
1008
1009     if (bpp >= 24)
1010     {
1011         GdkVisual *visual = gdk_visual_get_system();
1012         if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
1013         else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RGB;
1014         else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
1015         else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
1016         else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
1017         else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
1018     }
1019
1020     int r_mask = GetMaskRed();
1021     int g_mask = GetMaskGreen();
1022     int b_mask = GetMaskBlue();
1023
1024     unsigned char* data = GetData();
1025
1026     int index = 0;
1027     for (int y = 0; y < height; y++)
1028     {
1029         for (int x = 0; x < width; x++)
1030         {
1031             int r = data[index];
1032             index++;
1033             int g = data[index];
1034             index++;
1035             int b = data[index];
1036             index++;
1037
1038             if (HasMask())
1039             {
1040                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1041                     gdk_image_put_pixel( mask_image, x, y, 1 );
1042                 else
1043                     gdk_image_put_pixel( mask_image, x, y, 0 );
1044             }
1045
1046             if (HasMask())
1047             {
1048                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1049                     gdk_image_put_pixel( mask_image, x, y, 1 );
1050                 else
1051                     gdk_image_put_pixel( mask_image, x, y, 0 );
1052             }
1053
1054             switch (bpp)
1055             {
1056             case 8:
1057                 {
1058                     int pixel = -1;
1059                     if (wxTheApp->m_colorCube)
1060                     {
1061                         pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1062                     }
1063                     else
1064                     {
1065                         GdkColormap *cmap = gtk_widget_get_default_colormap();
1066                         GdkColor *colors = cmap->colors;
1067                         int max = 3 * (65536);
1068
1069                         for (int i = 0; i < cmap->size; i++)
1070                         {
1071                             int rdiff = (r << 8) - colors[i].red;
1072                             int gdiff = (g << 8) - colors[i].green;
1073                             int bdiff = (b << 8) - colors[i].blue;
1074                             int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
1075                             if (sum < max) { pixel = i; max = sum; }
1076                         }
1077                     }
1078
1079                     gdk_image_put_pixel( data_image, x, y, pixel );
1080
1081                     break;
1082                 }
1083             case 15:
1084                 {
1085                     guint32 pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1086                     gdk_image_put_pixel( data_image, x, y, pixel );
1087                     break;
1088                 }
1089             case 16:
1090                 {
1091                     guint32 pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1092                     gdk_image_put_pixel( data_image, x, y, pixel );
1093                     break;
1094                 }
1095             case 32:
1096             case 24:
1097                 {
1098                     guint32 pixel = 0;
1099                     switch (b_o)
1100                     {
1101                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1102                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1103                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1104                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1105                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1106                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1107                     }
1108                     gdk_image_put_pixel( data_image, x, y, pixel );
1109                 }
1110             default: break;
1111             }
1112         } // for
1113     }  // for
1114
1115     // Blit picture
1116
1117     GdkGC *data_gc = gdk_gc_new( bitmap.GetPixmap() );
1118
1119     gdk_draw_image( bitmap.GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
1120
1121     gdk_image_destroy( data_image );
1122     gdk_gc_unref( data_gc );
1123
1124     // Blit mask
1125
1126     if (HasMask())
1127     {
1128         GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1129
1130         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1131
1132         gdk_image_destroy( mask_image );
1133         gdk_gc_unref( mask_gc );
1134     }
1135
1136     return bitmap;
1137 }
1138
1139 wxImage::wxImage( const wxBitmap &bitmap )
1140 {
1141     wxCHECK_RET( bitmap.Ok(), _T("invalid bitmap") );
1142
1143     GdkImage *gdk_image = gdk_image_get( bitmap.GetPixmap(),
1144         0, 0,
1145         bitmap.GetWidth(), bitmap.GetHeight() );
1146
1147     wxCHECK_RET( gdk_image, _T("couldn't create image") );
1148
1149     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1150     char unsigned *data = GetData();
1151
1152     if (!data)
1153     {
1154         gdk_image_destroy( gdk_image );
1155         wxFAIL_MSG( _T("couldn't create image") );
1156         return;
1157     }
1158
1159     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1160     if (bitmap.GetMask())
1161     {
1162         gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1163             0, 0,
1164             bitmap.GetWidth(), bitmap.GetHeight() );
1165
1166         SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1167     }
1168
1169     GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
1170     if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent );
1171     int bpp = visual->depth;
1172     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1173
1174     GdkColormap *cmap = gtk_widget_get_default_colormap();
1175
1176     long pos = 0;
1177     for (int j = 0; j < bitmap.GetHeight(); j++)
1178     {
1179         for (int i = 0; i < bitmap.GetWidth(); i++)
1180         {
1181             int pixel = gdk_image_get_pixel( gdk_image, i, j );
1182             if (bpp <= 8)
1183             {
1184                 data[pos] = cmap->colors[pixel].red >> 8;
1185                 data[pos+1] = cmap->colors[pixel].green >> 8;
1186                 data[pos+2] = cmap->colors[pixel].blue >> 8;
1187             } else if (bpp == 15)
1188             {
1189                 data[pos] = (pixel >> 7) & 0xf8;
1190                 data[pos+1] = (pixel >> 2) & 0xf8;
1191                 data[pos+2] = (pixel << 3) & 0xf8;
1192             } else if (bpp == 16)
1193             {
1194                 data[pos] = (pixel >> 8) & 0xf8;
1195                 data[pos+1] = (pixel >> 3) & 0xfc;
1196                 data[pos+2] = (pixel << 3) & 0xf8;
1197             } else
1198             {
1199                 data[pos] = (pixel >> 16) & 0xff;
1200                 data[pos+1] = (pixel >> 8) & 0xff;
1201                 data[pos+2] = pixel & 0xff;
1202             }
1203
1204             if (gdk_image_mask)
1205             {
1206                 int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1207                 if (mask_pixel == 0)
1208                 {
1209                     data[pos] = 16;
1210                     data[pos+1] = 16;
1211                     data[pos+2] = 16;
1212                 }
1213             }
1214
1215             pos += 3;
1216         }
1217     }
1218
1219     gdk_image_destroy( gdk_image );
1220     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1221 }
1222
1223 #endif
1224
1225 //-----------------------------------------------------------------------------
1226 // Motif conversion routines
1227 //-----------------------------------------------------------------------------
1228
1229 #ifdef __WXMOTIF__
1230
1231 #include <Xm/Xm.h>
1232 #include "wx/utils.h"
1233 #include <math.h>
1234
1235 wxBitmap wxImage::ConvertToBitmap() const
1236 {
1237     wxBitmap bitmap;
1238
1239     wxCHECK_MSG( Ok(), bitmap, _T("invalid image") );
1240
1241     int width = GetWidth();
1242     int height = GetHeight();
1243
1244     bitmap.SetHeight( height );
1245     bitmap.SetWidth( width );
1246
1247     Display *dpy = (Display*) wxGetDisplay();
1248     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1249     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1250
1251     // Create image
1252
1253     XImage *data_image = XCreateImage( dpy, vis, bpp, ZPixmap, 0, 0, width, height, 32, 0 );
1254     data_image->data = (char*) malloc( data_image->bytes_per_line * data_image->height );
1255
1256     bitmap.Create( width, height, bpp );
1257
1258     /*
1259     // Create mask
1260
1261       GdkImage *mask_image = (GdkImage*) NULL;
1262
1263         if (HasMask())
1264         {
1265         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1266
1267           mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1268
1269             wxMask *mask = new wxMask();
1270             mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1271
1272               bitmap.SetMask( mask );
1273               }
1274     */
1275
1276     // Retrieve depth info
1277
1278     XVisualInfo vinfo_template;
1279     XVisualInfo *vi;
1280
1281     vinfo_template.visual = vis;
1282     vinfo_template.visualid = XVisualIDFromVisual( vis );
1283     vinfo_template.depth = bpp;
1284     int nitem = 0;
1285
1286     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1287
1288     wxCHECK_MSG( vi, wxNullBitmap, _T("no visual") );
1289
1290     XFree( vi );
1291
1292     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1293     if (bpp < 8) bpp = 8;
1294
1295     // Render
1296
1297     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1298     byte_order b_o = RGB;
1299
1300     if (bpp >= 24)
1301     {
1302         if ((vi->red_mask > vi->green_mask) && (vi->green_mask > vi->blue_mask))      b_o = RGB;
1303         else if ((vi->red_mask > vi->blue_mask) && (vi->blue_mask > vi->green_mask))  b_o = RGB;
1304         else if ((vi->blue_mask > vi->red_mask) && (vi->red_mask > vi->green_mask))   b_o = BRG;
1305         else if ((vi->blue_mask > vi->green_mask) && (vi->green_mask > vi->red_mask)) b_o = BGR;
1306         else if ((vi->green_mask > vi->red_mask) && (vi->red_mask > vi->blue_mask))   b_o = GRB;
1307         else if ((vi->green_mask > vi->blue_mask) && (vi->blue_mask > vi->red_mask))  b_o = GBR;
1308     }
1309
1310     /*
1311     int r_mask = GetMaskRed();
1312     int g_mask = GetMaskGreen();
1313     int b_mask = GetMaskBlue();
1314     */
1315
1316     XColor colors[256];
1317     if (bpp == 8)
1318     {
1319         Colormap cmap = (Colormap) wxTheApp->GetMainColormap( dpy );
1320
1321         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1322         XQueryColors( dpy, cmap, colors, 256 );
1323     }
1324
1325     unsigned char* data = GetData();
1326
1327     int index = 0;
1328     for (int y = 0; y < height; y++)
1329     {
1330         for (int x = 0; x < width; x++)
1331         {
1332             int r = data[index];
1333             index++;
1334             int g = data[index];
1335             index++;
1336             int b = data[index];
1337             index++;
1338
1339             /*
1340             if (HasMask())
1341             {
1342             if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1343             gdk_image_put_pixel( mask_image, x, y, 1 );
1344             else
1345             gdk_image_put_pixel( mask_image, x, y, 0 );
1346             }
1347             */
1348
1349             switch (bpp)
1350             {
1351             case 8:
1352                 {
1353                     int pixel = -1;
1354                     /*
1355                     if (wxTheApp->m_colorCube)
1356                     {
1357                     pixel = wxTheApp->m_colorCube
1358                     [ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1359                     }
1360                     else
1361                     {
1362                     */
1363                     int max = 3 * (65536);
1364                     for (int i = 0; i < 256; i++)
1365                     {
1366                         int rdiff = (r << 8) - colors[i].red;
1367                         int gdiff = (g << 8) - colors[i].green;
1368                         int bdiff = (b << 8) - colors[i].blue;
1369                         int sum = abs (rdiff) + abs (gdiff) + abs (bdiff);
1370                         if (sum < max) { pixel = i; max = sum; }
1371                     }
1372                     /*
1373                     }
1374                     */
1375                     XPutPixel( data_image, x, y, pixel );
1376                     break;
1377                 }
1378             case 15:
1379                 {
1380                     int pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1381                     XPutPixel( data_image, x, y, pixel );
1382                     break;
1383                 }
1384             case 16:
1385                 {
1386                     int pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1387                     XPutPixel( data_image, x, y, pixel );
1388                     break;
1389                 }
1390             case 32:
1391             case 24:
1392                 {
1393                     int pixel = 0;
1394                     switch (b_o)
1395                     {
1396                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1397                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1398                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1399                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1400                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1401                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1402                     }
1403                     XPutPixel( data_image, x, y, pixel );
1404                 }
1405             default: break;
1406             }
1407         } // for
1408     }  // for
1409
1410     // Blit picture
1411
1412     XGCValues gcvalues;
1413     gcvalues.foreground = BlackPixel( dpy, DefaultScreen( dpy ) );
1414     GC gc = XCreateGC( dpy, RootWindow ( dpy, DefaultScreen(dpy) ), GCForeground, &gcvalues );
1415     XPutImage( dpy, (Drawable)bitmap.GetPixmap(), gc, data_image, 0, 0, 0, 0, width, height );
1416
1417     XDestroyImage( data_image );
1418     XFreeGC( dpy, gc );
1419
1420     /*
1421     // Blit mask
1422
1423       if (HasMask())
1424       {
1425       GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1426
1427         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1428
1429           gdk_image_destroy( mask_image );
1430           gdk_gc_unref( mask_gc );
1431           }
1432     */
1433
1434     return bitmap;
1435 }
1436
1437 wxImage::wxImage( const wxBitmap &bitmap )
1438 {
1439     wxCHECK_RET( bitmap.Ok(), _T("invalid bitmap") );
1440
1441     Display *dpy = (Display*) wxGetDisplay();
1442     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1443     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1444
1445     XImage *ximage = XGetImage( dpy,
1446         (Drawable)bitmap.GetPixmap(),
1447         0, 0,
1448         bitmap.GetWidth(), bitmap.GetHeight(),
1449         AllPlanes, ZPixmap );
1450
1451     wxCHECK_RET( ximage, _T("couldn't create image") );
1452
1453     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1454     char unsigned *data = GetData();
1455
1456     if (!data)
1457     {
1458         XDestroyImage( ximage );
1459         wxFAIL_MSG( _T("couldn't create image") );
1460         return;
1461     }
1462
1463     /*
1464     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1465     if (bitmap.GetMask())
1466     {
1467     gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1468     0, 0,
1469     bitmap.GetWidth(), bitmap.GetHeight() );
1470
1471       SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1472       }
1473     */
1474
1475     // Retrieve depth info
1476
1477     XVisualInfo vinfo_template;
1478     XVisualInfo *vi;
1479
1480     vinfo_template.visual = vis;
1481     vinfo_template.visualid = XVisualIDFromVisual( vis );
1482     vinfo_template.depth = bpp;
1483     int nitem = 0;
1484
1485     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1486
1487     wxCHECK_RET( vi, _T("no visual") );
1488
1489     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1490
1491     XFree( vi );
1492
1493     XColor colors[256];
1494     if (bpp == 8)
1495     {
1496         Colormap cmap = (Colormap)wxTheApp->GetMainColormap( dpy );
1497
1498         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1499         XQueryColors( dpy, cmap, colors, 256 );
1500     }
1501
1502     long pos = 0;
1503     for (int j = 0; j < bitmap.GetHeight(); j++)
1504     {
1505         for (int i = 0; i < bitmap.GetWidth(); i++)
1506         {
1507             int pixel = XGetPixel( ximage, i, j );
1508             if (bpp <= 8)
1509             {
1510                 data[pos] = colors[pixel].red >> 8;
1511                 data[pos+1] = colors[pixel].green >> 8;
1512                 data[pos+2] = colors[pixel].blue >> 8;
1513             } else if (bpp == 15)
1514             {
1515                 data[pos] = (pixel >> 7) & 0xf8;
1516                 data[pos+1] = (pixel >> 2) & 0xf8;
1517                 data[pos+2] = (pixel << 3) & 0xf8;
1518             } else if (bpp == 16)
1519             {
1520                 data[pos] = (pixel >> 8) & 0xf8;
1521                 data[pos+1] = (pixel >> 3) & 0xfc;
1522                 data[pos+2] = (pixel << 3) & 0xf8;
1523             } else
1524             {
1525                 data[pos] = (pixel >> 16) & 0xff;
1526                 data[pos+1] = (pixel >> 8) & 0xff;
1527                 data[pos+2] = pixel & 0xff;
1528             }
1529
1530             /*
1531             if (gdk_image_mask)
1532             {
1533             int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1534             if (mask_pixel == 0)
1535             {
1536             data[pos] = 16;
1537             data[pos+1] = 16;
1538             data[pos+2] = 16;
1539             }
1540             }
1541             */
1542
1543             pos += 3;
1544         }
1545     }
1546
1547     XDestroyImage( ximage );
1548     /*
1549     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1550     */
1551 }
1552 #endif
1553
1554 // A module to allow wxImage initialization/cleanup
1555 // without calling these functions from app.cpp or from
1556 // the user's application.
1557
1558 class wxImageModule: public wxModule
1559 {
1560 DECLARE_DYNAMIC_CLASS(wxImageModule)
1561 public:
1562     wxImageModule() {}
1563     bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; };
1564     void OnExit() { wxImage::CleanUpHandlers(); };
1565 };
1566
1567 IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)