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     if ( !Ok() )
 586         return wxNullBitmap;
 587
 588     // sizeLimit is the MS upper limit for the DIB size
 589     int sizeLimit = 1024*768*3;
 590
 591     // width and height of the device-dependent bitmap
 592     int width = GetWidth();
 593     int bmpHeight = GetHeight();
 594
 595     // calc the number of bytes per scanline and padding
 596     int bytePerLine = width*3;
 597     int sizeDWORD = sizeof( DWORD );
 598     int lineBoundary = bytePerLine % sizeDWORD;
 599     int padding = 0;
 600     if( lineBoundary > 0 )
 601     {
 602         padding = sizeDWORD - lineBoundary;
 603         bytePerLine += padding;
 604     }
 605     // calc the number of DIBs and heights of DIBs
 606     int numDIB = 1;
 607     int hRemain = 0;
 608     int height = sizeLimit/bytePerLine;
 609     if( height >= bmpHeight )
 610         height = bmpHeight;
 611     else
 612     {
 613         numDIB =  bmpHeight / height;
 614         hRemain = bmpHeight % height;
 615         if( hRemain >0 )  numDIB++;
 616     }
 617
 618     // set bitmap parameters
 619     wxBitmap bitmap;
 620     wxCHECK_MSG( Ok(), bitmap, _T("invalid image") );
 621     bitmap.SetWidth( width );
 622     bitmap.SetHeight( bmpHeight );
 623     bitmap.SetDepth( wxDisplayDepth() );
 624
 625     // create a DIB header
 626     int headersize = sizeof(BITMAPINFOHEADER);
 627     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 628     wxCHECK_MSG( lpDIBh, bitmap, _T("could not allocate memory for DIB header") );
 629     // Fill in the DIB header
 630     lpDIBh->bmiHeader.biSize = headersize;
 631     lpDIBh->bmiHeader.biWidth = (DWORD)width;
 632     lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 633     lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 634     //   the general formula for biSizeImage:
 635     //      ( ( ( ((DWORD)width*24) +31 ) & ~31 ) >> 3 ) * height;
 636     lpDIBh->bmiHeader.biPlanes = 1;
 637     lpDIBh->bmiHeader.biBitCount = 24;
 638     lpDIBh->bmiHeader.biCompression = BI_RGB;
 639     lpDIBh->bmiHeader.biClrUsed = 0;
 640     // These seem not really needed for our purpose here.
 641     lpDIBh->bmiHeader.biClrImportant = 0;
 642     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 643     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
 644     // memory for DIB data
 645     unsigned char *lpBits;
 646     lpBits = (unsigned char *)malloc( lpDIBh->bmiHeader.biSizeImage );
 647     if( !lpBits )
 648     {
 649         wxFAIL_MSG( _T("could not allocate memory for DIB") );
 650         free( lpDIBh );
 651         return bitmap;
 652     }
 653
 654     // create and set the device-dependent bitmap
 655     HDC hdc = ::GetDC(NULL);
 656     HDC memdc = ::CreateCompatibleDC( hdc );
 657     HBITMAP hbitmap;
 658     hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight );
 659     ::SelectObject( memdc, hbitmap);
 660
 661     // copy image data into DIB data and then into DDB (in a loop)
 662     unsigned char *data = GetData();
 663     int i, j, n;
 664     int origin = 0;
 665     unsigned char *ptdata = data;
 666     unsigned char *ptbits;
 667
 668     for( n=0; n<numDIB; n++ )
 669     {
 670         if( numDIB > 1 && n == numDIB-1 && hRemain > 0 )
 671         {
 672             // redefine height and size of the (possibly) last smaller DIB
 673             // memory is not reallocated
 674             height = hRemain;
 675             lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 676             lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 677         }
 678         ptbits = lpBits;
 679
 680         for( j=0; j<height; j++ )
 681         {
 682             for( i=0; i<width; i++ )
 683             {
 684                 *(ptbits++) = *(ptdata+2);
 685                 *(ptbits++) = *(ptdata+1);
 686                 *(ptbits++) = *(ptdata  );
 687                 ptdata += 3;
 688             }
 689             for( i=0; i< padding; i++ )   *(ptbits++) = 0;
 690         }
 691         ::StretchDIBits( memdc, 0, origin, width, height,\
 692             0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
 693         origin += height;
 694         // if numDIB = 1,  lines below can also be used
 695         //    hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
 696         // The above line is equivalent to the following two lines.
 697         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
 698         //    ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
 699         // or the following lines
 700         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
 701         //    HDC memdc = ::CreateCompatibleDC( hdc );
 702         //    ::SelectObject( memdc, hbitmap);
 703         //    ::SetDIBitsToDevice( memdc, 0, 0, width, height,
 704         //          0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
 705         //    ::SelectObject( memdc, 0 );
 706         //    ::DeleteDC( memdc );
 707     }
 708     bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
 709
 710     // similarly, created an mono-bitmap for the possible mask
 711     if( HasMask() )
 712     {
 713         hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL );
 714         ::SelectObject( memdc, hbitmap);
 715         if( numDIB == 1 )   height = bmpHeight;
 716         else                height = sizeLimit/bytePerLine;
 717         lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 718         lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 719         origin = 0;
 720         unsigned char r = GetMaskRed();
 721         unsigned char g = GetMaskGreen();
 722         unsigned char b = GetMaskBlue();
 723         unsigned char zero = 0, one = 255;
 724         ptdata = data;
 725         for( n=0; n<numDIB; n++ )
 726         {
 727             if( numDIB > 1 && n == numDIB - 1 && hRemain > 0 )
 728             {
 729                 // redefine height and size of the (possibly) last smaller DIB
 730                 // memory is not reallocated
 731                 height = hRemain;
 732                 lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 733                 lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 734             }
 735             ptbits = lpBits;
 736             for( int j=0; j<height; j++ )
 737             {
 738                 for(i=0; i<width; i++ )
 739                 {
 740                     if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
 741                     {
 742                         *(ptbits++) = one;
 743                         *(ptbits++) = one;
 744                         *(ptbits++) = one;
 745                     }
 746                     else
 747                     {
 748                         *(ptbits++) = zero;
 749                         *(ptbits++) = zero;
 750                         *(ptbits++) = zero;
 751                     }
 752                 }
 753                 for( i=0; i< padding; i++ )   *(ptbits++) = zero;
 754             }
 755             ::StretchDIBits( memdc, 0, origin, width, height,\
 756                 0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
 757             origin += height;
 758         }
 759         // create a wxMask object
 760         wxMask *mask = new wxMask();
 761         mask->SetMaskBitmap( (WXHBITMAP) hbitmap );
 762         bitmap.SetMask( mask );
 763         // It will be deleted when the wxBitmap object is deleted (as of 01/1999)
 764         /* The following can also be used but is slow to run
 765         wxColour colour( GetMaskRed(), GetMaskGreen(), GetMaskBlue());
 766         wxMask *mask = new wxMask( bitmap, colour );
 767         bitmap.SetMask( mask );
 768         */
 769     }
 770
 771     // free allocated resources
 772     ::SelectObject( memdc, 0 );
 773     ::DeleteDC( memdc );
 774     ::ReleaseDC(NULL, hdc);
 775     free(lpDIBh);
 776     free(lpBits);
 777
 778     // check the wxBitmap object
 779     if( bitmap.GetHBITMAP() )
 780         bitmap.SetOk( TRUE );
 781     else
 782         bitmap.SetOk( FALSE );
 783
 784     return bitmap;
 785 }
 786
 787 wxImage::wxImage( const wxBitmap &bitmap )
 788 {
 789     // check the bitmap
 790     if( !bitmap.Ok() )
 791     {
 792         wxFAIL_MSG( _T("invalid bitmap") );
 793         return;
 794     }
 795
 796     // create an wxImage object
 797     int width = bitmap.GetWidth();
 798     int height = bitmap.GetHeight();
 799     Create( width, height );
 800     unsigned char *data = GetData();
 801     if( !data )
 802     {
 803         wxFAIL_MSG( _T("could not allocate data for image") );
 804         return;
 805     }
 806
 807     // calc the number of bytes per scanline and padding in the DIB
 808     int bytePerLine = width*3;
 809     int sizeDWORD = sizeof( DWORD );
 810     int lineBoundary =  bytePerLine % sizeDWORD;
 811     int padding = 0;
 812     if( lineBoundary > 0 )
 813     {
 814         padding = sizeDWORD - lineBoundary;
 815         bytePerLine += padding;
 816     }
 817
 818     // create a DIB header
 819     int headersize = sizeof(BITMAPINFOHEADER);
 820     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 821     if( !lpDIBh )
 822     {
 823         wxFAIL_MSG( _T("could not allocate data for DIB header") );
 824         free( data );
 825         return;
 826     }
 827     // Fill in the DIB header
 828     lpDIBh->bmiHeader.biSize = headersize;
 829     lpDIBh->bmiHeader.biWidth = width;
 830     lpDIBh->bmiHeader.biHeight = -height;
 831     lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
 832     lpDIBh->bmiHeader.biPlanes = 1;
 833     lpDIBh->bmiHeader.biBitCount = 24;
 834     lpDIBh->bmiHeader.biCompression = BI_RGB;
 835     lpDIBh->bmiHeader.biClrUsed = 0;
 836     // These seem not really needed for our purpose here.
 837     lpDIBh->bmiHeader.biClrImportant = 0;
 838     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 839     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
 840     // memory for DIB data
 841     unsigned char *lpBits;
 842     lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
 843     if( !lpBits )
 844     {
 845         wxFAIL_MSG( _T("could not allocate data for DIB") );
 846         free( data );
 847         free( lpDIBh );
 848         return;
 849     }
 850
 851     // copy data from the device-dependent bitmap to the DIB
 852     HDC hdc = ::GetDC(NULL);
 853     HBITMAP hbitmap;
 854     hbitmap = (HBITMAP) bitmap.GetHBITMAP();
 855     ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
 856
 857     // copy DIB data into the wxImage object
 858     int i, j;
 859     unsigned char *ptdata = data;
 860     unsigned char *ptbits = lpBits;
 861     for( i=0; i<height; i++ )
 862     {
 863         for( j=0; j<width; j++ )
 864         {
 865             *(ptdata++) = *(ptbits+2);
 866             *(ptdata++) = *(ptbits+1);
 867             *(ptdata++) = *(ptbits  );
 868             ptbits += 3;
 869         }
 870         ptbits += padding;
 871     }
 872
 873     // similarly, set data according to the possible mask bitmap
 874     if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
 875     {
 876         hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
 877         // memory DC created, color set, data copied, and memory DC deleted
 878         HDC memdc = ::CreateCompatibleDC( hdc );
 879         ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
 880         ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
 881         ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
 882         ::DeleteDC( memdc );
 883         // background color set to RGB(16,16,16) in consistent with wxGTK
 884         unsigned char r=16, g=16, b=16;
 885         ptdata = data;
 886         ptbits = lpBits;
 887         for( i=0; i<height; i++ )
 888         {
 889             for( j=0; j<width; j++ )
 890             {
 891                 if( *ptbits != 0 )
 892                     ptdata += 3;
 893                 else
 894                 {
 895                     *(ptdata++)  = r;
 896                     *(ptdata++)  = g;
 897                     *(ptdata++)  = b;
 898                 }
 899                 ptbits += 3;
 900             }
 901             ptbits += padding;
 902         }
 903         SetMaskColour( r, g, b );
 904         SetMask( TRUE );
 905     }
 906     else
 907     {
 908         SetMask( FALSE );
 909     }
 910     // free allocated resources
 911     ::ReleaseDC(NULL, hdc);
 912     free(lpDIBh);
 913     free(lpBits);
 914 }
 915
 916 #endif
 917
 918 //-----------------------------------------------------------------------------
 919 // GTK conversion routines
 920 //-----------------------------------------------------------------------------
 921
 922 #ifdef __WXGTK__
 923
 924 #include "gtk/gtk.h"
 925 #include "gdk/gdk.h"
 926 #include "gdk/gdkx.h"
 927
 928 #if (GTK_MINOR_VERSION > 0)
 929 #include "gdk/gdkrgb.h"
 930 #endif
 931
 932 wxBitmap wxImage::ConvertToBitmap() const
 933 {
 934     wxBitmap bitmap;
 935
 936     wxCHECK_MSG( Ok(), bitmap, _T("invalid image") );
 937
 938     int width = GetWidth();
 939     int height = GetHeight();
 940
 941     bitmap.SetHeight( height );
 942     bitmap.SetWidth( width );
 943
 944     bitmap.SetPixmap( gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, -1 ) );
 945
 946      // Retrieve depth
 947
 948     GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
 949     if (visual == NULL) visual = gdk_visual_get_system();
 950     int bpp = visual->depth;
 951
 952     bitmap.SetDepth( bpp );
 953
 954     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
 955     if (bpp < 8) bpp = 8;
 956
 957 #if (GTK_MINOR_VERSION > 0)
 958
 959     if (!HasMask() && (bpp > 8))
 960     {
 961         static bool s_hasInitialized = FALSE;
 962
 963         if (!s_hasInitialized)
 964         {
 965             gdk_rgb_init();
 966             s_hasInitialized = TRUE;
 967         }
 968
 969         GdkGC *gc = gdk_gc_new( bitmap.GetPixmap() );
 970
 971         gdk_draw_rgb_image( bitmap.GetPixmap(),
 972                             gc,
 973                             0, 0,
 974                             width, height,
 975                             GDK_RGB_DITHER_NONE,
 976                             GetData(),
 977                             width*3 );
 978
 979         gdk_gc_unref( gc );
 980
 981         return bitmap;
 982     }
 983
 984 #endif
 985
 986     // Create picture image
 987
 988     GdkImage *data_image =
 989         gdk_image_new( GDK_IMAGE_FASTEST, gdk_visual_get_system(), width, height );
 990
 991     // Create mask image
 992
 993     GdkImage *mask_image = (GdkImage*) NULL;
 994
 995     if (HasMask())
 996     {
 997         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
 998
 999         mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1000
1001         wxMask *mask = new wxMask();
1002         mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1003
1004         bitmap.SetMask( mask );
1005     }
1006
1007     // Render
1008
1009     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1010     byte_order b_o = RGB;
1011
1012     if (bpp >= 24)
1013     {
1014         GdkVisual *visual = gdk_visual_get_system();
1015         if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
1016         else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RGB;
1017         else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
1018         else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
1019         else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
1020         else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
1021     }
1022
1023     int r_mask = GetMaskRed();
1024     int g_mask = GetMaskGreen();
1025     int b_mask = GetMaskBlue();
1026
1027     unsigned char* data = GetData();
1028
1029     int index = 0;
1030     for (int y = 0; y < height; y++)
1031     {
1032         for (int x = 0; x < width; x++)
1033         {
1034             int r = data[index];
1035             index++;
1036             int g = data[index];
1037             index++;
1038             int b = data[index];
1039             index++;
1040
1041             if (HasMask())
1042             {
1043                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1044                     gdk_image_put_pixel( mask_image, x, y, 1 );
1045                 else
1046                     gdk_image_put_pixel( mask_image, x, y, 0 );
1047             }
1048
1049             if (HasMask())
1050             {
1051                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1052                     gdk_image_put_pixel( mask_image, x, y, 1 );
1053                 else
1054                     gdk_image_put_pixel( mask_image, x, y, 0 );
1055             }
1056
1057             switch (bpp)
1058             {
1059             case 8:
1060                 {
1061                     int pixel = -1;
1062                     if (wxTheApp->m_colorCube)
1063                     {
1064                         pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1065                     }
1066                     else
1067                     {
1068                         GdkColormap *cmap = gtk_widget_get_default_colormap();
1069                         GdkColor *colors = cmap->colors;
1070                         int max = 3 * (65536);
1071
1072                         for (int i = 0; i < cmap->size; i++)
1073                         {
1074                             int rdiff = (r << 8) - colors[i].red;
1075                             int gdiff = (g << 8) - colors[i].green;
1076                             int bdiff = (b << 8) - colors[i].blue;
1077                             int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
1078                             if (sum < max) { pixel = i; max = sum; }
1079                         }
1080                     }
1081
1082                     gdk_image_put_pixel( data_image, x, y, pixel );
1083
1084                     break;
1085                 }
1086             case 15:
1087                 {
1088                     guint32 pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1089                     gdk_image_put_pixel( data_image, x, y, pixel );
1090                     break;
1091                 }
1092             case 16:
1093                 {
1094                     guint32 pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1095                     gdk_image_put_pixel( data_image, x, y, pixel );
1096                     break;
1097                 }
1098             case 32:
1099             case 24:
1100                 {
1101                     guint32 pixel = 0;
1102                     switch (b_o)
1103                     {
1104                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1105                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1106                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1107                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1108                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1109                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1110                     }
1111                     gdk_image_put_pixel( data_image, x, y, pixel );
1112                 }
1113             default: break;
1114             }
1115         } // for
1116     }  // for
1117
1118     // Blit picture
1119
1120     GdkGC *data_gc = gdk_gc_new( bitmap.GetPixmap() );
1121
1122     gdk_draw_image( bitmap.GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
1123
1124     gdk_image_destroy( data_image );
1125     gdk_gc_unref( data_gc );
1126
1127     // Blit mask
1128
1129     if (HasMask())
1130     {
1131         GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1132
1133         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1134
1135         gdk_image_destroy( mask_image );
1136         gdk_gc_unref( mask_gc );
1137     }
1138
1139     return bitmap;
1140 }
1141
1142 wxImage::wxImage( const wxBitmap &bitmap )
1143 {
1144     wxCHECK_RET( bitmap.Ok(), _T("invalid bitmap") );
1145
1146     GdkImage *gdk_image = gdk_image_get( bitmap.GetPixmap(),
1147         0, 0,
1148         bitmap.GetWidth(), bitmap.GetHeight() );
1149
1150     wxCHECK_RET( gdk_image, _T("couldn't create image") );
1151
1152     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1153     char unsigned *data = GetData();
1154
1155     if (!data)
1156     {
1157         gdk_image_destroy( gdk_image );
1158         wxFAIL_MSG( _T("couldn't create image") );
1159         return;
1160     }
1161
1162     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1163     if (bitmap.GetMask())
1164     {
1165         gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1166             0, 0,
1167             bitmap.GetWidth(), bitmap.GetHeight() );
1168
1169         SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1170     }
1171
1172     GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
1173     if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent );
1174     int bpp = visual->depth;
1175     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1176
1177     GdkColormap *cmap = gtk_widget_get_default_colormap();
1178
1179     long pos = 0;
1180     for (int j = 0; j < bitmap.GetHeight(); j++)
1181     {
1182         for (int i = 0; i < bitmap.GetWidth(); i++)
1183         {
1184             int pixel = gdk_image_get_pixel( gdk_image, i, j );
1185             if (bpp <= 8)
1186             {
1187                 data[pos] = cmap->colors[pixel].red >> 8;
1188                 data[pos+1] = cmap->colors[pixel].green >> 8;
1189                 data[pos+2] = cmap->colors[pixel].blue >> 8;
1190             } else if (bpp == 15)
1191             {
1192                 data[pos] = (pixel >> 7) & 0xf8;
1193                 data[pos+1] = (pixel >> 2) & 0xf8;
1194                 data[pos+2] = (pixel << 3) & 0xf8;
1195             } else if (bpp == 16)
1196             {
1197                 data[pos] = (pixel >> 8) & 0xf8;
1198                 data[pos+1] = (pixel >> 3) & 0xfc;
1199                 data[pos+2] = (pixel << 3) & 0xf8;
1200             } else
1201             {
1202                 data[pos] = (pixel >> 16) & 0xff;
1203                 data[pos+1] = (pixel >> 8) & 0xff;
1204                 data[pos+2] = pixel & 0xff;
1205             }
1206
1207             if (gdk_image_mask)
1208             {
1209                 int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1210                 if (mask_pixel == 0)
1211                 {
1212                     data[pos] = 16;
1213                     data[pos+1] = 16;
1214                     data[pos+2] = 16;
1215                 }
1216             }
1217
1218             pos += 3;
1219         }
1220     }
1221
1222     gdk_image_destroy( gdk_image );
1223     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1224 }
1225
1226 #endif
1227
1228 //-----------------------------------------------------------------------------
1229 // Motif conversion routines
1230 //-----------------------------------------------------------------------------
1231
1232 #ifdef __WXMOTIF__
1233
1234 #include <Xm/Xm.h>
1235 #include "wx/utils.h"
1236 #include <math.h>
1237
1238 wxBitmap wxImage::ConvertToBitmap() const
1239 {
1240     wxBitmap bitmap;
1241
1242     wxCHECK_MSG( Ok(), bitmap, _T("invalid image") );
1243
1244     int width = GetWidth();
1245     int height = GetHeight();
1246
1247     bitmap.SetHeight( height );
1248     bitmap.SetWidth( width );
1249
1250     Display *dpy = (Display*) wxGetDisplay();
1251     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1252     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1253
1254     // Create image
1255
1256     XImage *data_image = XCreateImage( dpy, vis, bpp, ZPixmap, 0, 0, width, height, 32, 0 );
1257     data_image->data = (char*) malloc( data_image->bytes_per_line * data_image->height );
1258
1259     bitmap.Create( width, height, bpp );
1260
1261     /*
1262     // Create mask
1263
1264       GdkImage *mask_image = (GdkImage*) NULL;
1265
1266         if (HasMask())
1267         {
1268         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1269
1270           mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1271
1272             wxMask *mask = new wxMask();
1273             mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1274
1275               bitmap.SetMask( mask );
1276               }
1277     */
1278
1279     // Retrieve depth info
1280
1281     XVisualInfo vinfo_template;
1282     XVisualInfo *vi;
1283
1284     vinfo_template.visual = vis;
1285     vinfo_template.visualid = XVisualIDFromVisual( vis );
1286     vinfo_template.depth = bpp;
1287     int nitem = 0;
1288
1289     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1290
1291     wxCHECK_MSG( vi, wxNullBitmap, _T("no visual") );
1292
1293     XFree( vi );
1294
1295     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1296     if (bpp < 8) bpp = 8;
1297
1298     // Render
1299
1300     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1301     byte_order b_o = RGB;
1302
1303     if (bpp >= 24)
1304     {
1305         if ((vi->red_mask > vi->green_mask) && (vi->green_mask > vi->blue_mask))      b_o = RGB;
1306         else if ((vi->red_mask > vi->blue_mask) && (vi->blue_mask > vi->green_mask))  b_o = RGB;
1307         else if ((vi->blue_mask > vi->red_mask) && (vi->red_mask > vi->green_mask))   b_o = BRG;
1308         else if ((vi->blue_mask > vi->green_mask) && (vi->green_mask > vi->red_mask)) b_o = BGR;
1309         else if ((vi->green_mask > vi->red_mask) && (vi->red_mask > vi->blue_mask))   b_o = GRB;
1310         else if ((vi->green_mask > vi->blue_mask) && (vi->blue_mask > vi->red_mask))  b_o = GBR;
1311     }
1312
1313     /*
1314     int r_mask = GetMaskRed();
1315     int g_mask = GetMaskGreen();
1316     int b_mask = GetMaskBlue();
1317     */
1318
1319     XColor colors[256];
1320     if (bpp == 8)
1321     {
1322         Colormap cmap = (Colormap) wxTheApp->GetMainColormap( dpy );
1323
1324         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1325         XQueryColors( dpy, cmap, colors, 256 );
1326     }
1327
1328     unsigned char* data = GetData();
1329
1330     int index = 0;
1331     for (int y = 0; y < height; y++)
1332     {
1333         for (int x = 0; x < width; x++)
1334         {
1335             int r = data[index];
1336             index++;
1337             int g = data[index];
1338             index++;
1339             int b = data[index];
1340             index++;
1341
1342             /*
1343             if (HasMask())
1344             {
1345             if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1346             gdk_image_put_pixel( mask_image, x, y, 1 );
1347             else
1348             gdk_image_put_pixel( mask_image, x, y, 0 );
1349             }
1350             */
1351
1352             switch (bpp)
1353             {
1354             case 8:
1355                 {
1356                     int pixel = -1;
1357                     /*
1358                     if (wxTheApp->m_colorCube)
1359                     {
1360                     pixel = wxTheApp->m_colorCube
1361                     [ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1362                     }
1363                     else
1364                     {
1365                     */
1366                     int max = 3 * (65536);
1367                     for (int i = 0; i < 256; i++)
1368                     {
1369                         int rdiff = (r << 8) - colors[i].red;
1370                         int gdiff = (g << 8) - colors[i].green;
1371                         int bdiff = (b << 8) - colors[i].blue;
1372                         int sum = abs (rdiff) + abs (gdiff) + abs (bdiff);
1373                         if (sum < max) { pixel = i; max = sum; }
1374                     }
1375                     /*
1376                     }
1377                     */
1378                     XPutPixel( data_image, x, y, pixel );
1379                     break;
1380                 }
1381             case 15:
1382                 {
1383                     int pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1384                     XPutPixel( data_image, x, y, pixel );
1385                     break;
1386                 }
1387             case 16:
1388                 {
1389                     int pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1390                     XPutPixel( data_image, x, y, pixel );
1391                     break;
1392                 }
1393             case 32:
1394             case 24:
1395                 {
1396                     int pixel = 0;
1397                     switch (b_o)
1398                     {
1399                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1400                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1401                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1402                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1403                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1404                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1405                     }
1406                     XPutPixel( data_image, x, y, pixel );
1407                 }
1408             default: break;
1409             }
1410         } // for
1411     }  // for
1412
1413     // Blit picture
1414
1415     XGCValues gcvalues;
1416     gcvalues.foreground = BlackPixel( dpy, DefaultScreen( dpy ) );
1417     GC gc = XCreateGC( dpy, RootWindow ( dpy, DefaultScreen(dpy) ), GCForeground, &gcvalues );
1418     XPutImage( dpy, (Drawable)bitmap.GetPixmap(), gc, data_image, 0, 0, 0, 0, width, height );
1419
1420     XDestroyImage( data_image );
1421     XFreeGC( dpy, gc );
1422
1423     /*
1424     // Blit mask
1425
1426       if (HasMask())
1427       {
1428       GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1429
1430         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1431
1432           gdk_image_destroy( mask_image );
1433           gdk_gc_unref( mask_gc );
1434           }
1435     */
1436
1437     return bitmap;
1438 }
1439
1440 wxImage::wxImage( const wxBitmap &bitmap )
1441 {
1442     wxCHECK_RET( bitmap.Ok(), _T("invalid bitmap") );
1443
1444     Display *dpy = (Display*) wxGetDisplay();
1445     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1446     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1447
1448     XImage *ximage = XGetImage( dpy,
1449         (Drawable)bitmap.GetPixmap(),
1450         0, 0,
1451         bitmap.GetWidth(), bitmap.GetHeight(),
1452         AllPlanes, ZPixmap );
1453
1454     wxCHECK_RET( ximage, _T("couldn't create image") );
1455
1456     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1457     char unsigned *data = GetData();
1458
1459     if (!data)
1460     {
1461         XDestroyImage( ximage );
1462         wxFAIL_MSG( _T("couldn't create image") );
1463         return;
1464     }
1465
1466     /*
1467     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1468     if (bitmap.GetMask())
1469     {
1470     gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1471     0, 0,
1472     bitmap.GetWidth(), bitmap.GetHeight() );
1473
1474       SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1475       }
1476     */
1477
1478     // Retrieve depth info
1479
1480     XVisualInfo vinfo_template;
1481     XVisualInfo *vi;
1482
1483     vinfo_template.visual = vis;
1484     vinfo_template.visualid = XVisualIDFromVisual( vis );
1485     vinfo_template.depth = bpp;
1486     int nitem = 0;
1487
1488     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1489
1490     wxCHECK_RET( vi, _T("no visual") );
1491
1492     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1493
1494     XFree( vi );
1495
1496     XColor colors[256];
1497     if (bpp == 8)
1498     {
1499         Colormap cmap = (Colormap)wxTheApp->GetMainColormap( dpy );
1500
1501         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1502         XQueryColors( dpy, cmap, colors, 256 );
1503     }
1504
1505     long pos = 0;
1506     for (int j = 0; j < bitmap.GetHeight(); j++)
1507     {
1508         for (int i = 0; i < bitmap.GetWidth(); i++)
1509         {
1510             int pixel = XGetPixel( ximage, i, j );
1511             if (bpp <= 8)
1512             {
1513                 data[pos] = colors[pixel].red >> 8;
1514                 data[pos+1] = colors[pixel].green >> 8;
1515                 data[pos+2] = colors[pixel].blue >> 8;
1516             } else if (bpp == 15)
1517             {
1518                 data[pos] = (pixel >> 7) & 0xf8;
1519                 data[pos+1] = (pixel >> 2) & 0xf8;
1520                 data[pos+2] = (pixel << 3) & 0xf8;
1521             } else if (bpp == 16)
1522             {
1523                 data[pos] = (pixel >> 8) & 0xf8;
1524                 data[pos+1] = (pixel >> 3) & 0xfc;
1525                 data[pos+2] = (pixel << 3) & 0xf8;
1526             } else
1527             {
1528                 data[pos] = (pixel >> 16) & 0xff;
1529                 data[pos+1] = (pixel >> 8) & 0xff;
1530                 data[pos+2] = pixel & 0xff;
1531             }
1532
1533             /*
1534             if (gdk_image_mask)
1535             {
1536             int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1537             if (mask_pixel == 0)
1538             {
1539             data[pos] = 16;
1540             data[pos+1] = 16;
1541             data[pos+2] = 16;
1542             }
1543             }
1544             */
1545
1546             pos += 3;
1547         }
1548     }
1549
1550     XDestroyImage( ximage );
1551     /*
1552     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1553     */
1554 }
1555 #endif
1556
1557 // A module to allow wxImage initialization/cleanup
1558 // without calling these functions from app.cpp or from
1559 // the user's application.
1560
1561 class wxImageModule: public wxModule
1562 {
1563 DECLARE_DYNAMIC_CLASS(wxImageModule)
1564 public:
1565     wxImageModule() {}
1566     bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; };
1567     void OnExit() { wxImage::CleanUpHandlers(); };
1568 };
1569
1570 IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)