src/common/image.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        image.cpp
   3 // Purpose:     wxImage
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "image.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #ifdef __BORLANDC__
  18     #pragma hdrstop
  19 #endif
  20
  21 #include "wx/image.h"
  22 #include "wx/bitmap.h"
  23 #include "wx/debug.h"
  24 #include "wx/log.h"
  25 #include "wx/app.h"
  26 #include "wx/filefn.h"
  27 #include "wx/wfstream.h"
  28 #include "wx/intl.h"
  29 #include "wx/module.h"
  30
  31 // For memcpy
  32 #include <string.h>
  33
  34 #ifdef __SALFORDC__
  35     #undef FAR
  36 #endif
  37
  38 #ifdef __WXMSW__
  39     #include "wx/msw/private.h"
  40 #endif
  41
  42 //-----------------------------------------------------------------------------
  43 // wxImage
  44 //-----------------------------------------------------------------------------
  45
  46 class wxImageRefData: public wxObjectRefData
  47 {
  48
  49 public:
  50     wxImageRefData();
  51     ~wxImageRefData();
  52
  53     int             m_width;
  54     int             m_height;
  55     unsigned char  *m_data;
  56     bool            m_hasMask;
  57     unsigned char   m_maskRed,m_maskGreen,m_maskBlue;
  58     bool            m_ok;
  59 };
  60
  61 wxImageRefData::wxImageRefData()
  62 {
  63     m_width = 0;
  64     m_height = 0;
  65     m_data = (unsigned char*) NULL;
  66     m_ok = FALSE;
  67     m_maskRed = 0;
  68     m_maskGreen = 0;
  69     m_maskBlue = 0;
  70     m_hasMask = FALSE;
  71 }
  72
  73 wxImageRefData::~wxImageRefData()
  74 {
  75     if (m_data) free( m_data );
  76 }
  77
  78 wxList wxImage::sm_handlers;
  79
  80 //-----------------------------------------------------------------------------
  81
  82 #define M_IMGDATA ((wxImageRefData *)m_refData)
  83
  84 #if !USE_SHARED_LIBRARIES
  85     IMPLEMENT_DYNAMIC_CLASS(wxImage, wxObject)
  86 #endif
  87
  88 wxImage::wxImage()
  89 {
  90 }
  91
  92 wxImage::wxImage( int width, int height )
  93 {
  94     Create( width, height );
  95 }
  96
  97 wxImage::wxImage( const wxString& name, long type )
  98 {
  99     LoadFile( name, type );
 100 }
 101
 102 wxImage::wxImage( const wxString& name, const wxString& mimetype )
 103 {
 104     LoadFile( name, mimetype );
 105 }
 106
 107 #if wxUSE_STREAMS
 108 wxImage::wxImage( wxInputStream& stream, long type )
 109 {
 110     LoadFile( stream, type );
 111 }
 112
 113 wxImage::wxImage( wxInputStream& stream, const wxString& mimetype )
 114 {
 115     LoadFile( stream, mimetype );
 116 }
 117 #endif // wxUSE_STREAMS
 118
 119 wxImage::wxImage( const wxImage& image )
 120 {
 121     Ref(image);
 122 }
 123
 124 wxImage::wxImage( const wxImage* image )
 125 {
 126     if (image) Ref(*image);
 127 }
 128
 129 void wxImage::Create( int width, int height )
 130 {
 131     m_refData = new wxImageRefData();
 132
 133     M_IMGDATA->m_data = (unsigned char *) malloc( width*height*3 );
 134     if (M_IMGDATA->m_data)
 135     {
 136         for (int l = 0; l < width*height*3; l++) M_IMGDATA->m_data[l] = 0;
 137
 138         M_IMGDATA->m_width = width;
 139         M_IMGDATA->m_height = height;
 140         M_IMGDATA->m_ok = TRUE;
 141     }
 142     else
 143     {
 144         UnRef();
 145     }
 146 }
 147
 148 void wxImage::Destroy()
 149 {
 150     UnRef();
 151 }
 152
 153 wxImage wxImage::Scale( int width, int height ) const
 154 {
 155     wxImage image;
 156
 157     wxCHECK_MSG( Ok(), image, wxT("invalid image") );
 158
 159     wxCHECK_MSG( (width > 0) && (height > 0), image, wxT("invalid image size") );
 160
 161     image.Create( width, height );
 162
 163     char unsigned *data = image.GetData();
 164
 165     wxCHECK_MSG( data, image, wxT("unable to create image") );
 166
 167     if (M_IMGDATA->m_hasMask)
 168         image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
 169
 170     long old_height = M_IMGDATA->m_height;
 171     long old_width  = M_IMGDATA->m_width;
 172
 173     char unsigned *source_data = M_IMGDATA->m_data;
 174     char unsigned *target_data = data;
 175
 176     for (long j = 0; j < height; j++)
 177     {
 178         long y_offset = (j * old_height / height) * old_width;
 179
 180         for (long i = 0; i < width; i++)
 181         {
 182             memcpy( target_data,
 183                 source_data + 3*(y_offset + ((i * old_width )/ width)),
 184                 3 );
 185             target_data += 3;
 186         }
 187     }
 188
 189     return image;
 190 }
 191
 192 wxImage wxImage::GetSubImage( const wxRect &rect ) const
 193 {
 194     wxImage image;
 195
 196     wxCHECK_MSG( Ok(), image, wxT("invalid image") );
 197
 198     wxCHECK_MSG( (rect.GetLeft()>=0) && (rect.GetTop()>=0) && (rect.GetRight()<=GetWidth()) && (rect.GetBottom()<=GetHeight())
 199                  , image, wxT("invalid subimage size") );
 200
 201     int subwidth=rect.GetWidth();
 202     const int subheight=rect.GetHeight();
 203
 204     image.Create( subwidth, subheight );
 205
 206     char unsigned *subdata = image.GetData(), *data=GetData();
 207
 208     wxCHECK_MSG( subdata, image, wxT("unable to create image") );
 209
 210     if (M_IMGDATA->m_hasMask)
 211         image.SetMaskColour( M_IMGDATA->m_maskRed, M_IMGDATA->m_maskGreen, M_IMGDATA->m_maskBlue );
 212
 213     const int subleft=3*rect.GetLeft();
 214     const int width=3*GetWidth();
 215     subwidth*=3;
 216
 217     data+=rect.GetTop()*width+subleft;
 218
 219     for (long j = 0; j < subheight; ++j)
 220     {
 221         memcpy( subdata, data, subwidth);
 222         subdata+=subwidth;
 223         data+=width;
 224     }
 225
 226     return image;
 227 }
 228
 229 void wxImage::SetRGB( int x, int y, unsigned char r, unsigned char g, unsigned char b )
 230 {
 231     wxCHECK_RET( Ok(), wxT("invalid image") );
 232
 233     int w = M_IMGDATA->m_width;
 234     int h = M_IMGDATA->m_height;
 235
 236     wxCHECK_RET( (x>=0) && (y>=0) && (x<w) && (y<h), wxT("invalid image index") );
 237
 238     long pos = (y * w + x) * 3;
 239
 240     M_IMGDATA->m_data[ pos   ] = r;
 241     M_IMGDATA->m_data[ pos+1 ] = g;
 242     M_IMGDATA->m_data[ pos+2 ] = b;
 243 }
 244
 245 unsigned char wxImage::GetRed( int x, int y )
 246 {
 247     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 248
 249     int w = M_IMGDATA->m_width;
 250     int h = M_IMGDATA->m_height;
 251
 252     wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, wxT("invalid image index") );
 253
 254     long pos = (y * w + x) * 3;
 255
 256     return M_IMGDATA->m_data[pos];
 257 }
 258
 259 unsigned char wxImage::GetGreen( int x, int y )
 260 {
 261     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 262
 263     int w = M_IMGDATA->m_width;
 264     int h = M_IMGDATA->m_height;
 265
 266     wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, wxT("invalid image index") );
 267
 268     long pos = (y * w + x) * 3;
 269
 270     return M_IMGDATA->m_data[pos+1];
 271 }
 272
 273 unsigned char wxImage::GetBlue( int x, int y )
 274 {
 275     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 276
 277     int w = M_IMGDATA->m_width;
 278     int h = M_IMGDATA->m_height;
 279
 280     wxCHECK_MSG( (x>=0) && (y>=0) && (x<w) && (y<h), 0, wxT("invalid image index") );
 281
 282     long pos = (y * w + x) * 3;
 283
 284     return M_IMGDATA->m_data[pos+2];
 285 }
 286
 287 bool wxImage::Ok() const
 288 {
 289     return (M_IMGDATA && M_IMGDATA->m_ok);
 290 }
 291
 292 char unsigned *wxImage::GetData() const
 293 {
 294     wxCHECK_MSG( Ok(), (char unsigned *)NULL, wxT("invalid image") );
 295
 296     return M_IMGDATA->m_data;
 297 }
 298
 299 void wxImage::SetData( char unsigned *data )
 300 {
 301     wxCHECK_RET( Ok(), wxT("invalid image") );
 302
 303     wxImageRefData *newRefData = new wxImageRefData();
 304
 305     newRefData->m_width = M_IMGDATA->m_width;
 306     newRefData->m_height = M_IMGDATA->m_height;
 307     newRefData->m_data = data;
 308     newRefData->m_ok = TRUE;
 309     newRefData->m_maskRed = M_IMGDATA->m_maskRed;
 310     newRefData->m_maskGreen = M_IMGDATA->m_maskGreen;
 311     newRefData->m_maskBlue = M_IMGDATA->m_maskBlue;
 312     newRefData->m_hasMask = M_IMGDATA->m_hasMask;
 313
 314     UnRef();
 315
 316     m_refData = newRefData;
 317 }
 318
 319 void wxImage::SetMaskColour( unsigned char r, unsigned char g, unsigned char b )
 320 {
 321     wxCHECK_RET( Ok(), wxT("invalid image") );
 322
 323     M_IMGDATA->m_maskRed = r;
 324     M_IMGDATA->m_maskGreen = g;
 325     M_IMGDATA->m_maskBlue = b;
 326     M_IMGDATA->m_hasMask = TRUE;
 327 }
 328
 329 unsigned char wxImage::GetMaskRed() const
 330 {
 331     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 332
 333     return M_IMGDATA->m_maskRed;
 334 }
 335
 336 unsigned char wxImage::GetMaskGreen() const
 337 {
 338     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 339
 340     return M_IMGDATA->m_maskGreen;
 341 }
 342
 343 unsigned char wxImage::GetMaskBlue() const
 344 {
 345     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 346
 347     return M_IMGDATA->m_maskBlue;
 348 }
 349
 350 void wxImage::SetMask( bool mask )
 351 {
 352     wxCHECK_RET( Ok(), wxT("invalid image") );
 353
 354     M_IMGDATA->m_hasMask = mask;
 355 }
 356
 357 bool wxImage::HasMask() const
 358 {
 359     wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
 360
 361     return M_IMGDATA->m_hasMask;
 362 }
 363
 364 int wxImage::GetWidth() const
 365 {
 366     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 367
 368     return M_IMGDATA->m_width;
 369 }
 370
 371 int wxImage::GetHeight() const
 372 {
 373     wxCHECK_MSG( Ok(), 0, wxT("invalid image") );
 374
 375     return M_IMGDATA->m_height;
 376 }
 377
 378 bool wxImage::LoadFile( const wxString& filename, long type )
 379 {
 380 #if wxUSE_STREAMS
 381     if (wxFileExists(filename))
 382     {
 383         wxFileInputStream stream(filename);
 384         return LoadFile(stream, type);
 385     }
 386
 387     else {
 388         wxLogError( wxT("Can't load image from file '%s': file does not exist."), filename.c_str() );
 389
 390         return FALSE;
 391     }
 392 #else // !wxUSE_STREAMS
 393     return FALSE;
 394 #endif // wxUSE_STREAMS
 395 }
 396
 397 bool wxImage::LoadFile( const wxString& filename, const wxString& mimetype )
 398 {
 399 #if wxUSE_STREAMS
 400     if (wxFileExists(filename))
 401     {
 402         wxFileInputStream stream(filename);
 403         return LoadFile(stream, mimetype);
 404     }
 405
 406     else {
 407         wxLogError( wxT("Can't load image from file '%s': file does not exist."), filename.c_str() );
 408
 409         return FALSE;
 410     }
 411 #else // !wxUSE_STREAMS
 412     return FALSE;
 413 #endif // wxUSE_STREAMS
 414 }
 415
 416 bool wxImage::SaveFile( const wxString& filename, int type )
 417 {
 418 #if wxUSE_STREAMS
 419     wxFileOutputStream stream(filename);
 420
 421     if ( stream.LastError() == wxStream_NOERROR )
 422         return SaveFile(stream, type);
 423     else
 424 #endif // wxUSE_STREAMS
 425         return FALSE;
 426 }
 427
 428 bool wxImage::SaveFile( const wxString& filename, const wxString& mimetype )
 429 {
 430 #if wxUSE_STREAMS
 431     wxFileOutputStream stream(filename);
 432
 433     if ( stream.LastError() == wxStream_NOERROR )
 434         return SaveFile(stream, mimetype);
 435     else
 436 #endif // wxUSE_STREAMS
 437         return FALSE;
 438 }
 439
 440 #if wxUSE_STREAMS
 441
 442 bool wxImage::LoadFile( wxInputStream& stream, long type )
 443 {
 444     UnRef();
 445
 446     m_refData = new wxImageRefData;
 447
 448     wxImageHandler *handler;
 449
 450     if (type==wxBITMAP_TYPE_ANY)
 451     {
 452         wxList &list=GetHandlers();
 453
 454         for ( wxList::Node *node = list.GetFirst(); node; node = node->GetNext() )
 455         {
 456              handler=(wxImageHandler*)node->GetData();
 457              if (handler->CanRead( stream ))
 458                  return handler->LoadFile( this, stream );
 459
 460         }
 461
 462         wxLogWarning( wxT("No handler found for this image.") );
 463         return FALSE;
 464     }
 465
 466     handler = FindHandler(type);
 467
 468     if (handler == NULL)
 469     {
 470         wxLogWarning( wxT("No image handler for type %d defined."), type );
 471
 472         return FALSE;
 473     }
 474
 475     return handler->LoadFile( this, stream );
 476 }
 477
 478 bool wxImage::LoadFile( wxInputStream& stream, const wxString& mimetype )
 479 {
 480     UnRef();
 481
 482     m_refData = new wxImageRefData;
 483
 484     wxImageHandler *handler = FindHandlerMime(mimetype);
 485
 486     if (handler == NULL)
 487     {
 488         wxLogWarning( wxT("No image handler for type %s defined."), mimetype.GetData() );
 489
 490         return FALSE;
 491     }
 492
 493     return handler->LoadFile( this, stream );
 494 }
 495
 496 bool wxImage::SaveFile( wxOutputStream& stream, int type )
 497 {
 498     wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
 499
 500     wxImageHandler *handler = FindHandler(type);
 501
 502     if (handler == NULL)
 503     {
 504         wxLogWarning( wxT("No image handler for type %d defined."), type );
 505
 506         return FALSE;
 507     }
 508
 509     return handler->SaveFile( this, stream );
 510 }
 511
 512 bool wxImage::SaveFile( wxOutputStream& stream, const wxString& mimetype )
 513 {
 514     wxCHECK_MSG( Ok(), FALSE, wxT("invalid image") );
 515
 516     wxImageHandler *handler = FindHandlerMime(mimetype);
 517
 518     if (handler == NULL)
 519     {
 520         wxLogWarning( wxT("No image handler for type %s defined."), mimetype.GetData() );
 521
 522         return FALSE;
 523     }
 524
 525     return handler->SaveFile( this, stream );
 526 }
 527 #endif // wxUSE_STREAMS
 528
 529 void wxImage::AddHandler( wxImageHandler *handler )
 530 {
 531     // make sure that the memory will be freed at the program end
 532     sm_handlers.DeleteContents(TRUE);
 533
 534     sm_handlers.Append( handler );
 535 }
 536
 537 void wxImage::InsertHandler( wxImageHandler *handler )
 538 {
 539     // make sure that the memory will be freed at the program end
 540     sm_handlers.DeleteContents(TRUE);
 541
 542     sm_handlers.Insert( handler );
 543 }
 544
 545 bool wxImage::RemoveHandler( const wxString& name )
 546 {
 547     wxImageHandler *handler = FindHandler(name);
 548     if (handler)
 549     {
 550         sm_handlers.DeleteObject(handler);
 551         return TRUE;
 552     }
 553     else
 554         return FALSE;
 555 }
 556
 557 wxImageHandler *wxImage::FindHandler( const wxString& name )
 558 {
 559     wxNode *node = sm_handlers.First();
 560     while (node)
 561     {
 562         wxImageHandler *handler = (wxImageHandler*)node->Data();
 563         if (handler->GetName().Cmp(name) == 0) return handler;
 564
 565         node = node->Next();
 566     }
 567     return (wxImageHandler *)NULL;
 568 }
 569
 570 wxImageHandler *wxImage::FindHandler( const wxString& extension, long bitmapType )
 571 {
 572     wxNode *node = sm_handlers.First();
 573     while (node)
 574     {
 575         wxImageHandler *handler = (wxImageHandler*)node->Data();
 576         if ( (handler->GetExtension().Cmp(extension) == 0) &&
 577             (bitmapType == -1 || handler->GetType() == bitmapType) )
 578             return handler;
 579         node = node->Next();
 580     }
 581     return (wxImageHandler*)NULL;
 582 }
 583
 584 wxImageHandler *wxImage::FindHandler( long bitmapType )
 585 {
 586     wxNode *node = sm_handlers.First();
 587     while (node)
 588     {
 589         wxImageHandler *handler = (wxImageHandler *)node->Data();
 590         if (handler->GetType() == bitmapType) return handler;
 591         node = node->Next();
 592     }
 593     return NULL;
 594 }
 595
 596 wxImageHandler *wxImage::FindHandlerMime( const wxString& mimetype )
 597 {
 598     wxNode *node = sm_handlers.First();
 599     while (node)
 600     {
 601         wxImageHandler *handler = (wxImageHandler *)node->Data();
 602         if (handler->GetMimeType().IsSameAs(mimetype, FALSE)) return handler;
 603         node = node->Next();
 604     }
 605     return NULL;
 606 }
 607
 608 void wxImage::InitStandardHandlers()
 609 {
 610   AddHandler( new wxBMPHandler );
 611 }
 612
 613 void wxImage::CleanUpHandlers()
 614 {
 615     wxNode *node = sm_handlers.First();
 616     while (node)
 617     {
 618         wxImageHandler *handler = (wxImageHandler *)node->Data();
 619         wxNode *next = node->Next();
 620         delete handler;
 621         delete node;
 622         node = next;
 623     }
 624 }
 625
 626 //-----------------------------------------------------------------------------
 627 // wxImageHandler
 628 //-----------------------------------------------------------------------------
 629
 630 #if !USE_SHARED_LIBRARIES
 631 IMPLEMENT_DYNAMIC_CLASS(wxImageHandler,wxObject)
 632 #endif
 633
 634 #if wxUSE_STREAMS
 635 bool wxImageHandler::LoadFile( wxImage *WXUNUSED(image), wxInputStream& WXUNUSED(stream), bool WXUNUSED(verbose) )
 636 {
 637     return FALSE;
 638 }
 639
 640 bool wxImageHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), bool WXUNUSED(verbose) )
 641 {
 642     return FALSE;
 643 }
 644
 645 bool wxImageHandler::CanRead( const wxString& name )
 646 {
 647 #if wxUSE_STREAMS
 648     if (wxFileExists(name))
 649     {
 650         wxFileInputStream stream(name);
 651         return CanRead(stream);
 652     }
 653
 654     else {
 655         wxLogError( wxT("Can't check image format of file '%s': file does not exist."), name.c_str() );
 656
 657         return FALSE;
 658     }
 659 #else // !wxUSE_STREAMS
 660     return FALSE;
 661 #endif // wxUSE_STREAMS
 662 }
 663
 664
 665
 666 #endif // wxUSE_STREAMS
 667
 668 //-----------------------------------------------------------------------------
 669 // MSW conversion routines
 670 //-----------------------------------------------------------------------------
 671
 672 #ifdef __WXMSW__
 673
 674 wxBitmap wxImage::ConvertToBitmap() const
 675 {
 676     if ( !Ok() )
 677         return wxNullBitmap;
 678
 679     // sizeLimit is the MS upper limit for the DIB size
 680 #ifdef  WIN32
 681     int sizeLimit = 1024*768*3;
 682 #else
 683     int sizeLimit = 0x7fff ;
 684 #endif
 685
 686     // width and height of the device-dependent bitmap
 687     int width = GetWidth();
 688     int bmpHeight = GetHeight();
 689
 690     // calc the number of bytes per scanline and padding
 691     int bytePerLine = width*3;
 692     int sizeDWORD = sizeof( DWORD );
 693     int lineBoundary = bytePerLine % sizeDWORD;
 694     int padding = 0;
 695     if( lineBoundary > 0 )
 696     {
 697         padding = sizeDWORD - lineBoundary;
 698         bytePerLine += padding;
 699     }
 700     // calc the number of DIBs and heights of DIBs
 701     int numDIB = 1;
 702     int hRemain = 0;
 703     int height = sizeLimit/bytePerLine;
 704     if( height >= bmpHeight )
 705         height = bmpHeight;
 706     else
 707     {
 708         numDIB =  bmpHeight / height;
 709         hRemain = bmpHeight % height;
 710         if( hRemain >0 )  numDIB++;
 711     }
 712
 713     // set bitmap parameters
 714     wxBitmap bitmap;
 715     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
 716     bitmap.SetWidth( width );
 717     bitmap.SetHeight( bmpHeight );
 718     bitmap.SetDepth( wxDisplayDepth() );
 719
 720     // create a DIB header
 721     int headersize = sizeof(BITMAPINFOHEADER);
 722     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 723     wxCHECK_MSG( lpDIBh, bitmap, wxT("could not allocate memory for DIB header") );
 724     // Fill in the DIB header
 725     lpDIBh->bmiHeader.biSize = headersize;
 726     lpDIBh->bmiHeader.biWidth = (DWORD)width;
 727     lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 728     lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 729     //   the general formula for biSizeImage:
 730     //      ( ( ( ((DWORD)width*24) +31 ) & ~31 ) >> 3 ) * height;
 731     lpDIBh->bmiHeader.biPlanes = 1;
 732     lpDIBh->bmiHeader.biBitCount = 24;
 733     lpDIBh->bmiHeader.biCompression = BI_RGB;
 734     lpDIBh->bmiHeader.biClrUsed = 0;
 735     // These seem not really needed for our purpose here.
 736     lpDIBh->bmiHeader.biClrImportant = 0;
 737     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 738     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
 739     // memory for DIB data
 740     unsigned char *lpBits;
 741     lpBits = (unsigned char *)malloc( lpDIBh->bmiHeader.biSizeImage );
 742     if( !lpBits )
 743     {
 744         wxFAIL_MSG( wxT("could not allocate memory for DIB") );
 745         free( lpDIBh );
 746         return bitmap;
 747     }
 748
 749     // create and set the device-dependent bitmap
 750     HDC hdc = ::GetDC(NULL);
 751     HDC memdc = ::CreateCompatibleDC( hdc );
 752     HBITMAP hbitmap;
 753     hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight );
 754     ::SelectObject( memdc, hbitmap);
 755
 756     // copy image data into DIB data and then into DDB (in a loop)
 757     unsigned char *data = GetData();
 758     int i, j, n;
 759     int origin = 0;
 760     unsigned char *ptdata = data;
 761     unsigned char *ptbits;
 762
 763     for( n=0; n<numDIB; n++ )
 764     {
 765         if( numDIB > 1 && n == numDIB-1 && hRemain > 0 )
 766         {
 767             // redefine height and size of the (possibly) last smaller DIB
 768             // memory is not reallocated
 769             height = hRemain;
 770             lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 771             lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 772         }
 773         ptbits = lpBits;
 774
 775         for( j=0; j<height; j++ )
 776         {
 777             for( i=0; i<width; i++ )
 778             {
 779                 *(ptbits++) = *(ptdata+2);
 780                 *(ptbits++) = *(ptdata+1);
 781                 *(ptbits++) = *(ptdata  );
 782                 ptdata += 3;
 783             }
 784             for( i=0; i< padding; i++ )   *(ptbits++) = 0;
 785         }
 786         ::StretchDIBits( memdc, 0, origin, width, height,\
 787             0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
 788         origin += height;
 789         // if numDIB = 1,  lines below can also be used
 790         //    hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
 791         // The above line is equivalent to the following two lines.
 792         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
 793         //    ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
 794         // or the following lines
 795         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
 796         //    HDC memdc = ::CreateCompatibleDC( hdc );
 797         //    ::SelectObject( memdc, hbitmap);
 798         //    ::SetDIBitsToDevice( memdc, 0, 0, width, height,
 799         //            0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
 800         //    ::SelectObject( memdc, 0 );
 801         //    ::DeleteDC( memdc );
 802     }
 803     bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
 804
 805     // similarly, created an mono-bitmap for the possible mask
 806     if( HasMask() )
 807     {
 808         hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL );
 809         ::SelectObject( memdc, hbitmap);
 810         if( numDIB == 1 )   height = bmpHeight;
 811         else                height = sizeLimit/bytePerLine;
 812         lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 813         lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 814         origin = 0;
 815         unsigned char r = GetMaskRed();
 816         unsigned char g = GetMaskGreen();
 817         unsigned char b = GetMaskBlue();
 818         unsigned char zero = 0, one = 255;
 819         ptdata = data;
 820         for( n=0; n<numDIB; n++ )
 821         {
 822             if( numDIB > 1 && n == numDIB - 1 && hRemain > 0 )
 823             {
 824                 // redefine height and size of the (possibly) last smaller DIB
 825                 // memory is not reallocated
 826                 height = hRemain;
 827                 lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 828                 lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 829             }
 830             ptbits = lpBits;
 831             for( int j=0; j<height; j++ )
 832             {
 833                 for(i=0; i<width; i++ )
 834                 {
 835                     if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
 836                     {
 837                         *(ptbits++) = one;
 838                         *(ptbits++) = one;
 839                         *(ptbits++) = one;
 840                     }
 841                     else
 842                     {
 843                         *(ptbits++) = zero;
 844                         *(ptbits++) = zero;
 845                         *(ptbits++) = zero;
 846                     }
 847                 }
 848                 for( i=0; i< padding; i++ )   *(ptbits++) = zero;
 849             }
 850             ::StretchDIBits( memdc, 0, origin, width, height,\
 851                 0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
 852             origin += height;
 853         }
 854         // create a wxMask object
 855         wxMask *mask = new wxMask();
 856         mask->SetMaskBitmap( (WXHBITMAP) hbitmap );
 857         bitmap.SetMask( mask );
 858         // It will be deleted when the wxBitmap object is deleted (as of 01/1999)
 859         /* The following can also be used but is slow to run
 860         wxColour colour( GetMaskRed(), GetMaskGreen(), GetMaskBlue());
 861         wxMask *mask = new wxMask( bitmap, colour );
 862         bitmap.SetMask( mask );
 863         */
 864     }
 865
 866     // free allocated resources
 867     ::SelectObject( memdc, 0 );
 868     ::DeleteDC( memdc );
 869     ::ReleaseDC(NULL, hdc);
 870     free(lpDIBh);
 871     free(lpBits);
 872
 873     // check the wxBitmap object
 874     if( bitmap.GetHBITMAP() )
 875         bitmap.SetOk( TRUE );
 876     else
 877         bitmap.SetOk( FALSE );
 878
 879     return bitmap;
 880 }
 881
 882 wxImage::wxImage( const wxBitmap &bitmap )
 883 {
 884     // check the bitmap
 885     if( !bitmap.Ok() )
 886     {
 887         wxFAIL_MSG( wxT("invalid bitmap") );
 888         return;
 889     }
 890
 891     // create an wxImage object
 892     int width = bitmap.GetWidth();
 893     int height = bitmap.GetHeight();
 894     Create( width, height );
 895     unsigned char *data = GetData();
 896     if( !data )
 897     {
 898         wxFAIL_MSG( wxT("could not allocate data for image") );
 899         return;
 900     }
 901
 902     // calc the number of bytes per scanline and padding in the DIB
 903     int bytePerLine = width*3;
 904     int sizeDWORD = sizeof( DWORD );
 905     int lineBoundary =  bytePerLine % sizeDWORD;
 906     int padding = 0;
 907     if( lineBoundary > 0 )
 908     {
 909         padding = sizeDWORD - lineBoundary;
 910         bytePerLine += padding;
 911     }
 912
 913     // create a DIB header
 914     int headersize = sizeof(BITMAPINFOHEADER);
 915     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 916     if( !lpDIBh )
 917     {
 918         wxFAIL_MSG( wxT("could not allocate data for DIB header") );
 919         free( data );
 920         return;
 921     }
 922     // Fill in the DIB header
 923     lpDIBh->bmiHeader.biSize = headersize;
 924     lpDIBh->bmiHeader.biWidth = width;
 925     lpDIBh->bmiHeader.biHeight = -height;
 926     lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
 927     lpDIBh->bmiHeader.biPlanes = 1;
 928     lpDIBh->bmiHeader.biBitCount = 24;
 929     lpDIBh->bmiHeader.biCompression = BI_RGB;
 930     lpDIBh->bmiHeader.biClrUsed = 0;
 931     // These seem not really needed for our purpose here.
 932     lpDIBh->bmiHeader.biClrImportant = 0;
 933     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 934     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
 935     // memory for DIB data
 936     unsigned char *lpBits;
 937     lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
 938     if( !lpBits )
 939     {
 940         wxFAIL_MSG( wxT("could not allocate data for DIB") );
 941         free( data );
 942         free( lpDIBh );
 943         return;
 944     }
 945
 946     // copy data from the device-dependent bitmap to the DIB
 947     HDC hdc = ::GetDC(NULL);
 948     HBITMAP hbitmap;
 949     hbitmap = (HBITMAP) bitmap.GetHBITMAP();
 950     ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
 951
 952     // copy DIB data into the wxImage object
 953     int i, j;
 954     unsigned char *ptdata = data;
 955     unsigned char *ptbits = lpBits;
 956     for( i=0; i<height; i++ )
 957     {
 958         for( j=0; j<width; j++ )
 959         {
 960             *(ptdata++) = *(ptbits+2);
 961             *(ptdata++) = *(ptbits+1);
 962             *(ptdata++) = *(ptbits  );
 963             ptbits += 3;
 964         }
 965         ptbits += padding;
 966     }
 967
 968     // similarly, set data according to the possible mask bitmap
 969     if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
 970     {
 971         hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
 972         // memory DC created, color set, data copied, and memory DC deleted
 973         HDC memdc = ::CreateCompatibleDC( hdc );
 974         ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
 975         ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
 976         ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
 977         ::DeleteDC( memdc );
 978         // background color set to RGB(16,16,16) in consistent with wxGTK
 979         unsigned char r=16, g=16, b=16;
 980         ptdata = data;
 981         ptbits = lpBits;
 982         for( i=0; i<height; i++ )
 983         {
 984             for( j=0; j<width; j++ )
 985             {
 986                 if( *ptbits != 0 )
 987                     ptdata += 3;
 988                 else
 989                 {
 990                     *(ptdata++)  = r;
 991                     *(ptdata++)  = g;
 992                     *(ptdata++)  = b;
 993                 }
 994                 ptbits += 3;
 995             }
 996             ptbits += padding;
 997         }
 998         SetMaskColour( r, g, b );
 999         SetMask( TRUE );
1000     }
1001     else
1002     {
1003         SetMask( FALSE );
1004     }
1005     // free allocated resources
1006     ::ReleaseDC(NULL, hdc);
1007     free(lpDIBh);
1008     free(lpBits);
1009 }
1010
1011 #endif
1012
1013 //-----------------------------------------------------------------------------
1014 // GTK conversion routines
1015 //-----------------------------------------------------------------------------
1016
1017 #ifdef __WXGTK__
1018
1019 #include "gtk/gtk.h"
1020 #include "gdk/gdk.h"
1021 #include "gdk/gdkx.h"
1022
1023 #if (GTK_MINOR_VERSION > 0)
1024 #include "gdk/gdkrgb.h"
1025 #endif
1026
1027 wxBitmap wxImage::ConvertToBitmap() const
1028 {
1029     wxBitmap bitmap;
1030
1031     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
1032
1033     int width = GetWidth();
1034     int height = GetHeight();
1035
1036     bitmap.SetHeight( height );
1037     bitmap.SetWidth( width );
1038
1039     bitmap.SetPixmap( gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, -1 ) );
1040
1041      // Retrieve depth
1042
1043     GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
1044     if (visual == NULL) visual = gdk_visual_get_system();
1045     int bpp = visual->depth;
1046
1047     bitmap.SetDepth( bpp );
1048
1049     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1050     if (bpp < 8) bpp = 8;
1051
1052 #if (GTK_MINOR_VERSION > 0)
1053
1054     if (!HasMask() && (bpp > 8))
1055     {
1056         static bool s_hasInitialized = FALSE;
1057
1058         if (!s_hasInitialized)
1059         {
1060             gdk_rgb_init();
1061             s_hasInitialized = TRUE;
1062         }
1063
1064         GdkGC *gc = gdk_gc_new( bitmap.GetPixmap() );
1065
1066         gdk_draw_rgb_image( bitmap.GetPixmap(),
1067                             gc,
1068                             0, 0,
1069                             width, height,
1070                             GDK_RGB_DITHER_NONE,
1071                             GetData(),
1072                             width*3 );
1073
1074         gdk_gc_unref( gc );
1075
1076         return bitmap;
1077     }
1078
1079 #endif
1080
1081     // Create picture image
1082
1083     GdkImage *data_image =
1084         gdk_image_new( GDK_IMAGE_FASTEST, gdk_visual_get_system(), width, height );
1085
1086     // Create mask image
1087
1088     GdkImage *mask_image = (GdkImage*) NULL;
1089
1090     if (HasMask())
1091     {
1092         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1093
1094         mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1095
1096         wxMask *mask = new wxMask();
1097         mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1098
1099         bitmap.SetMask( mask );
1100     }
1101
1102     // Render
1103
1104     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1105     byte_order b_o = RGB;
1106
1107     if (bpp >= 24)
1108     {
1109         GdkVisual *visual = gdk_visual_get_system();
1110         if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
1111         else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RGB;
1112         else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
1113         else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
1114         else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
1115         else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
1116     }
1117
1118     int r_mask = GetMaskRed();
1119     int g_mask = GetMaskGreen();
1120     int b_mask = GetMaskBlue();
1121
1122     unsigned char* data = GetData();
1123
1124     int index = 0;
1125     for (int y = 0; y < height; y++)
1126     {
1127         for (int x = 0; x < width; x++)
1128         {
1129             int r = data[index];
1130             index++;
1131             int g = data[index];
1132             index++;
1133             int b = data[index];
1134             index++;
1135
1136             if (HasMask())
1137             {
1138                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1139                     gdk_image_put_pixel( mask_image, x, y, 1 );
1140                 else
1141                     gdk_image_put_pixel( mask_image, x, y, 0 );
1142             }
1143
1144             if (HasMask())
1145             {
1146                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1147                     gdk_image_put_pixel( mask_image, x, y, 1 );
1148                 else
1149                     gdk_image_put_pixel( mask_image, x, y, 0 );
1150             }
1151
1152             switch (bpp)
1153             {
1154             case 8:
1155                 {
1156                     int pixel = -1;
1157                     if (wxTheApp->m_colorCube)
1158                     {
1159                         pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1160                     }
1161                     else
1162                     {
1163                         GdkColormap *cmap = gtk_widget_get_default_colormap();
1164                         GdkColor *colors = cmap->colors;
1165                         int max = 3 * (65536);
1166
1167                         for (int i = 0; i < cmap->size; i++)
1168                         {
1169                             int rdiff = (r << 8) - colors[i].red;
1170                             int gdiff = (g << 8) - colors[i].green;
1171                             int bdiff = (b << 8) - colors[i].blue;
1172                             int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
1173                             if (sum < max) { pixel = i; max = sum; }
1174                         }
1175                     }
1176
1177                     gdk_image_put_pixel( data_image, x, y, pixel );
1178
1179                     break;
1180                 }
1181             case 15:
1182                 {
1183                     guint32 pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1184                     gdk_image_put_pixel( data_image, x, y, pixel );
1185                     break;
1186                 }
1187             case 16:
1188                 {
1189                     guint32 pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1190                     gdk_image_put_pixel( data_image, x, y, pixel );
1191                     break;
1192                 }
1193             case 32:
1194             case 24:
1195                 {
1196                     guint32 pixel = 0;
1197                     switch (b_o)
1198                     {
1199                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1200                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1201                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1202                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1203                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1204                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1205                     }
1206                     gdk_image_put_pixel( data_image, x, y, pixel );
1207                 }
1208             default: break;
1209             }
1210         } // for
1211     }  // for
1212
1213     // Blit picture
1214
1215     GdkGC *data_gc = gdk_gc_new( bitmap.GetPixmap() );
1216
1217     gdk_draw_image( bitmap.GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
1218
1219     gdk_image_destroy( data_image );
1220     gdk_gc_unref( data_gc );
1221
1222     // Blit mask
1223
1224     if (HasMask())
1225     {
1226         GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1227
1228         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1229
1230         gdk_image_destroy( mask_image );
1231         gdk_gc_unref( mask_gc );
1232     }
1233
1234     return bitmap;
1235 }
1236
1237 wxImage::wxImage( const wxBitmap &bitmap )
1238 {
1239     wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1240
1241     GdkImage *gdk_image = gdk_image_get( bitmap.GetPixmap(),
1242         0, 0,
1243         bitmap.GetWidth(), bitmap.GetHeight() );
1244
1245     wxCHECK_RET( gdk_image, wxT("couldn't create image") );
1246
1247     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1248     char unsigned *data = GetData();
1249
1250     if (!data)
1251     {
1252         gdk_image_destroy( gdk_image );
1253         wxFAIL_MSG( wxT("couldn't create image") );
1254         return;
1255     }
1256
1257     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1258     if (bitmap.GetMask())
1259     {
1260         gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1261             0, 0,
1262             bitmap.GetWidth(), bitmap.GetHeight() );
1263
1264         SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1265     }
1266
1267     GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
1268     if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent );
1269     int bpp = visual->depth;
1270     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1271
1272     GdkColormap *cmap = gtk_widget_get_default_colormap();
1273
1274     long pos = 0;
1275     for (int j = 0; j < bitmap.GetHeight(); j++)
1276     {
1277         for (int i = 0; i < bitmap.GetWidth(); i++)
1278         {
1279             wxInt32 pixel = gdk_image_get_pixel( gdk_image, i, j );
1280             pixel = wxINT32_SWAP_ON_BE( pixel );
1281             if (bpp <= 8)
1282             {
1283                 data[pos] = cmap->colors[pixel].red >> 8;
1284                 data[pos+1] = cmap->colors[pixel].green >> 8;
1285                 data[pos+2] = cmap->colors[pixel].blue >> 8;
1286             } else if (bpp == 15)
1287             {
1288                 data[pos] = (pixel >> 7) & 0xf8;
1289                 data[pos+1] = (pixel >> 2) & 0xf8;
1290                 data[pos+2] = (pixel << 3) & 0xf8;
1291             } else if (bpp == 16)
1292             {
1293                 data[pos] = (pixel >> 8) & 0xf8;
1294                 data[pos+1] = (pixel >> 3) & 0xfc;
1295                 data[pos+2] = (pixel << 3) & 0xf8;
1296             } else
1297             {
1298                 data[pos] = (pixel >> 16) & 0xff;
1299                 data[pos+1] = (pixel >> 8) & 0xff;
1300                 data[pos+2] = pixel & 0xff;
1301             }
1302
1303             if (gdk_image_mask)
1304             {
1305                 int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1306                 if (mask_pixel == 0)
1307                 {
1308                     data[pos] = 16;
1309                     data[pos+1] = 16;
1310                     data[pos+2] = 16;
1311                 }
1312             }
1313
1314             pos += 3;
1315         }
1316     }
1317
1318     gdk_image_destroy( gdk_image );
1319     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1320 }
1321
1322 #endif
1323
1324 //-----------------------------------------------------------------------------
1325 // Motif conversion routines
1326 //-----------------------------------------------------------------------------
1327
1328 #ifdef __WXMOTIF__
1329
1330 #include <Xm/Xm.h>
1331 #include "wx/utils.h"
1332 #include <math.h>
1333
1334 wxBitmap wxImage::ConvertToBitmap() const
1335 {
1336     wxBitmap bitmap;
1337
1338     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
1339
1340     int width = GetWidth();
1341     int height = GetHeight();
1342
1343     bitmap.SetHeight( height );
1344     bitmap.SetWidth( width );
1345
1346     Display *dpy = (Display*) wxGetDisplay();
1347     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1348     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1349
1350     // Create image
1351
1352     XImage *data_image = XCreateImage( dpy, vis, bpp, ZPixmap, 0, 0, width, height, 32, 0 );
1353     data_image->data = (char*) malloc( data_image->bytes_per_line * data_image->height );
1354
1355     bitmap.Create( width, height, bpp );
1356
1357     /*
1358     // Create mask
1359
1360       GdkImage *mask_image = (GdkImage*) NULL;
1361
1362         if (HasMask())
1363         {
1364         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1365
1366           mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1367
1368             wxMask *mask = new wxMask();
1369             mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1370
1371               bitmap.SetMask( mask );
1372               }
1373     */
1374
1375     // Retrieve depth info
1376
1377     XVisualInfo vinfo_template;
1378     XVisualInfo *vi;
1379
1380     vinfo_template.visual = vis;
1381     vinfo_template.visualid = XVisualIDFromVisual( vis );
1382     vinfo_template.depth = bpp;
1383     int nitem = 0;
1384
1385     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1386
1387     wxCHECK_MSG( vi, wxNullBitmap, wxT("no visual") );
1388
1389     XFree( vi );
1390
1391     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1392     if (bpp < 8) bpp = 8;
1393
1394     // Render
1395
1396     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1397     byte_order b_o = RGB;
1398
1399     if (bpp >= 24)
1400     {
1401         if ((vi->red_mask > vi->green_mask) && (vi->green_mask > vi->blue_mask))      b_o = RGB;
1402         else if ((vi->red_mask > vi->blue_mask) && (vi->blue_mask > vi->green_mask))  b_o = RGB;
1403         else if ((vi->blue_mask > vi->red_mask) && (vi->red_mask > vi->green_mask))   b_o = BRG;
1404         else if ((vi->blue_mask > vi->green_mask) && (vi->green_mask > vi->red_mask)) b_o = BGR;
1405         else if ((vi->green_mask > vi->red_mask) && (vi->red_mask > vi->blue_mask))   b_o = GRB;
1406         else if ((vi->green_mask > vi->blue_mask) && (vi->blue_mask > vi->red_mask))  b_o = GBR;
1407     }
1408
1409     /*
1410     int r_mask = GetMaskRed();
1411     int g_mask = GetMaskGreen();
1412     int b_mask = GetMaskBlue();
1413     */
1414
1415     XColor colors[256];
1416     if (bpp == 8)
1417     {
1418         Colormap cmap = (Colormap) wxTheApp->GetMainColormap( dpy );
1419
1420         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1421         XQueryColors( dpy, cmap, colors, 256 );
1422     }
1423
1424     unsigned char* data = GetData();
1425
1426     int index = 0;
1427     for (int y = 0; y < height; y++)
1428     {
1429         for (int x = 0; x < width; x++)
1430         {
1431             int r = data[index];
1432             index++;
1433             int g = data[index];
1434             index++;
1435             int b = data[index];
1436             index++;
1437
1438             /*
1439             if (HasMask())
1440             {
1441             if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1442             gdk_image_put_pixel( mask_image, x, y, 1 );
1443             else
1444             gdk_image_put_pixel( mask_image, x, y, 0 );
1445             }
1446             */
1447
1448             switch (bpp)
1449             {
1450             case 8:
1451                 {
1452                     int pixel = -1;
1453                     /*
1454                     if (wxTheApp->m_colorCube)
1455                     {
1456                     pixel = wxTheApp->m_colorCube
1457                     [ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1458                     }
1459                     else
1460                     {
1461                     */
1462                     int max = 3 * (65536);
1463                     for (int i = 0; i < 256; i++)
1464                     {
1465                         int rdiff = (r << 8) - colors[i].red;
1466                         int gdiff = (g << 8) - colors[i].green;
1467                         int bdiff = (b << 8) - colors[i].blue;
1468                         int sum = abs (rdiff) + abs (gdiff) + abs (bdiff);
1469                         if (sum < max) { pixel = i; max = sum; }
1470                     }
1471                     /*
1472                     }
1473                     */
1474                     XPutPixel( data_image, x, y, pixel );
1475                     break;
1476                 }
1477             case 15:
1478                 {
1479                     int pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1480                     XPutPixel( data_image, x, y, pixel );
1481                     break;
1482                 }
1483             case 16:
1484                 {
1485                     int pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1486                     XPutPixel( data_image, x, y, pixel );
1487                     break;
1488                 }
1489             case 32:
1490             case 24:
1491                 {
1492                     int pixel = 0;
1493                     switch (b_o)
1494                     {
1495                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1496                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1497                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1498                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1499                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1500                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1501                     }
1502                     XPutPixel( data_image, x, y, pixel );
1503                 }
1504             default: break;
1505             }
1506         } // for
1507     }  // for
1508
1509     // Blit picture
1510
1511     XGCValues gcvalues;
1512     gcvalues.foreground = BlackPixel( dpy, DefaultScreen( dpy ) );
1513     GC gc = XCreateGC( dpy, RootWindow ( dpy, DefaultScreen(dpy) ), GCForeground, &gcvalues );
1514     XPutImage( dpy, (Drawable)bitmap.GetPixmap(), gc, data_image, 0, 0, 0, 0, width, height );
1515
1516     XDestroyImage( data_image );
1517     XFreeGC( dpy, gc );
1518
1519     /*
1520     // Blit mask
1521
1522       if (HasMask())
1523       {
1524       GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1525
1526         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1527
1528           gdk_image_destroy( mask_image );
1529           gdk_gc_unref( mask_gc );
1530           }
1531     */
1532
1533     return bitmap;
1534 }
1535
1536 wxImage::wxImage( const wxBitmap &bitmap )
1537 {
1538     wxCHECK_RET( bitmap.Ok(), wxT("invalid bitmap") );
1539
1540     Display *dpy = (Display*) wxGetDisplay();
1541     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1542     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1543
1544     XImage *ximage = XGetImage( dpy,
1545         (Drawable)bitmap.GetPixmap(),
1546         0, 0,
1547         bitmap.GetWidth(), bitmap.GetHeight(),
1548         AllPlanes, ZPixmap );
1549
1550     wxCHECK_RET( ximage, wxT("couldn't create image") );
1551
1552     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1553     char unsigned *data = GetData();
1554
1555     if (!data)
1556     {
1557         XDestroyImage( ximage );
1558         wxFAIL_MSG( wxT("couldn't create image") );
1559         return;
1560     }
1561
1562     /*
1563     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1564     if (bitmap.GetMask())
1565     {
1566     gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1567     0, 0,
1568     bitmap.GetWidth(), bitmap.GetHeight() );
1569
1570       SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1571       }
1572     */
1573
1574     // Retrieve depth info
1575
1576     XVisualInfo vinfo_template;
1577     XVisualInfo *vi;
1578
1579     vinfo_template.visual = vis;
1580     vinfo_template.visualid = XVisualIDFromVisual( vis );
1581     vinfo_template.depth = bpp;
1582     int nitem = 0;
1583
1584     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1585
1586     wxCHECK_RET( vi, wxT("no visual") );
1587
1588     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1589
1590     XFree( vi );
1591
1592     XColor colors[256];
1593     if (bpp == 8)
1594     {
1595         Colormap cmap = (Colormap)wxTheApp->GetMainColormap( dpy );
1596
1597         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1598         XQueryColors( dpy, cmap, colors, 256 );
1599     }
1600
1601     long pos = 0;
1602     for (int j = 0; j < bitmap.GetHeight(); j++)
1603     {
1604         for (int i = 0; i < bitmap.GetWidth(); i++)
1605         {
1606             int pixel = XGetPixel( ximage, i, j );
1607             if (bpp <= 8)
1608             {
1609                 data[pos] = colors[pixel].red >> 8;
1610                 data[pos+1] = colors[pixel].green >> 8;
1611                 data[pos+2] = colors[pixel].blue >> 8;
1612             } else if (bpp == 15)
1613             {
1614                 data[pos] = (pixel >> 7) & 0xf8;
1615                 data[pos+1] = (pixel >> 2) & 0xf8;
1616                 data[pos+2] = (pixel << 3) & 0xf8;
1617             } else if (bpp == 16)
1618             {
1619                 data[pos] = (pixel >> 8) & 0xf8;
1620                 data[pos+1] = (pixel >> 3) & 0xfc;
1621                 data[pos+2] = (pixel << 3) & 0xf8;
1622             } else
1623             {
1624                 data[pos] = (pixel >> 16) & 0xff;
1625                 data[pos+1] = (pixel >> 8) & 0xff;
1626                 data[pos+2] = pixel & 0xff;
1627             }
1628
1629             /*
1630             if (gdk_image_mask)
1631             {
1632             int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1633             if (mask_pixel == 0)
1634             {
1635             data[pos] = 16;
1636             data[pos+1] = 16;
1637             data[pos+2] = 16;
1638             }
1639             }
1640             */
1641
1642             pos += 3;
1643         }
1644     }
1645
1646     XDestroyImage( ximage );
1647     /*
1648     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1649     */
1650 }
1651 #endif
1652
1653 // A module to allow wxImage initialization/cleanup
1654 // without calling these functions from app.cpp or from
1655 // the user's application.
1656
1657 class wxImageModule: public wxModule
1658 {
1659 DECLARE_DYNAMIC_CLASS(wxImageModule)
1660 public:
1661     wxImageModule() {}
1662     bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; };
1663     void OnExit() { wxImage::CleanUpHandlers(); };
1664 };
1665
1666 IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)