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 wxImage wxImage::GetSubImage( const wxRect &rect ) const
 193 {
 194     wxImage image;
 195
 196     wxCHECK_MSG( Ok(), image, _T("invalid image") );
 197
 198     wxCHECK_MSG( (rect.GetLeft()>=0) && (rect.GetTop()>=0) && (rect.GetRight()<=GetWidth()) && (rect.GetBottom()<=GetHeight())
 199                  , image, _T("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, _T("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(), _T("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), _T("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, _T("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, _T("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, _T("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, _T("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, _T("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, _T("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, _T("invalid image") );
 295
 296     return M_IMGDATA->m_data;
 297 }
 298
 299 void wxImage::SetData( char unsigned *data )
 300 {
 301     wxCHECK_RET( Ok(), _T("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(), _T("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, _T("invalid image") );
 332
 333     return M_IMGDATA->m_maskRed;
 334 }
 335
 336 unsigned char wxImage::GetMaskGreen() const
 337 {
 338     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 339
 340     return M_IMGDATA->m_maskGreen;
 341 }
 342
 343 unsigned char wxImage::GetMaskBlue() const
 344 {
 345     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 346
 347     return M_IMGDATA->m_maskBlue;
 348 }
 349
 350 void wxImage::SetMask( bool mask )
 351 {
 352     wxCHECK_RET( Ok(), _T("invalid image") );
 353
 354     M_IMGDATA->m_hasMask = mask;
 355 }
 356
 357 bool wxImage::HasMask() const
 358 {
 359     wxCHECK_MSG( Ok(), FALSE, _T("invalid image") );
 360
 361     return M_IMGDATA->m_hasMask;
 362 }
 363
 364 int wxImage::GetWidth() const
 365 {
 366     wxCHECK_MSG( Ok(), 0, _T("invalid image") );
 367
 368     return M_IMGDATA->m_width;
 369 }
 370
 371 int wxImage::GetHeight() const
 372 {
 373     wxCHECK_MSG( Ok(), 0, _T("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( _T("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( _T("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( _T("No handler found for this image.") );
 463         return FALSE;
 464     }
 465
 466     handler = FindHandler(type);
 467
 468     if (handler == NULL)
 469     {
 470         wxLogWarning( _T("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( _T("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, _T("invalid image") );
 499
 500     wxImageHandler *handler = FindHandler(type);
 501
 502     if (handler == NULL)
 503     {
 504         wxLogWarning( _T("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, _T("invalid image") );
 515
 516     wxImageHandler *handler = FindHandlerMime(mimetype);
 517
 518     if (handler == NULL)
 519     {
 520         wxLogWarning( _T("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( wxInputStream& stream )
 646 {
 647     return FALSE;
 648 }
 649
 650 bool wxImageHandler::CanRead( const wxString& name )
 651 {
 652 #if wxUSE_STREAMS
 653     if (wxFileExists(name))
 654     {
 655         wxFileInputStream stream(name);
 656         return CanRead(stream);
 657     }
 658
 659     else {
 660         wxLogError( _T("Can't check image format of file '%s': file does not exist."), name.c_str() );
 661
 662         return FALSE;
 663     }
 664 #else // !wxUSE_STREAMS
 665     return FALSE;
 666 #endif // wxUSE_STREAMS
 667 }
 668
 669
 670
 671 #endif // wxUSE_STREAMS
 672
 673 //-----------------------------------------------------------------------------
 674 // MSW conversion routines
 675 //-----------------------------------------------------------------------------
 676
 677 #ifdef __WXMSW__
 678
 679 wxBitmap wxImage::ConvertToBitmap() const
 680 {
 681     if ( !Ok() )
 682         return wxNullBitmap;
 683
 684     // sizeLimit is the MS upper limit for the DIB size
 685     int sizeLimit = 1024*768*3;
 686
 687     // width and height of the device-dependent bitmap
 688     int width = GetWidth();
 689     int bmpHeight = GetHeight();
 690
 691     // calc the number of bytes per scanline and padding
 692     int bytePerLine = width*3;
 693     int sizeDWORD = sizeof( DWORD );
 694     int lineBoundary = bytePerLine % sizeDWORD;
 695     int padding = 0;
 696     if( lineBoundary > 0 )
 697     {
 698         padding = sizeDWORD - lineBoundary;
 699         bytePerLine += padding;
 700     }
 701     // calc the number of DIBs and heights of DIBs
 702     int numDIB = 1;
 703     int hRemain = 0;
 704     int height = sizeLimit/bytePerLine;
 705     if( height >= bmpHeight )
 706         height = bmpHeight;
 707     else
 708     {
 709         numDIB =  bmpHeight / height;
 710         hRemain = bmpHeight % height;
 711         if( hRemain >0 )  numDIB++;
 712     }
 713
 714     // set bitmap parameters
 715     wxBitmap bitmap;
 716     wxCHECK_MSG( Ok(), bitmap, _T("invalid image") );
 717     bitmap.SetWidth( width );
 718     bitmap.SetHeight( bmpHeight );
 719     bitmap.SetDepth( wxDisplayDepth() );
 720
 721     // create a DIB header
 722     int headersize = sizeof(BITMAPINFOHEADER);
 723     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 724     wxCHECK_MSG( lpDIBh, bitmap, _T("could not allocate memory for DIB header") );
 725     // Fill in the DIB header
 726     lpDIBh->bmiHeader.biSize = headersize;
 727     lpDIBh->bmiHeader.biWidth = (DWORD)width;
 728     lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 729     lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 730     //   the general formula for biSizeImage:
 731     //      ( ( ( ((DWORD)width*24) +31 ) & ~31 ) >> 3 ) * height;
 732     lpDIBh->bmiHeader.biPlanes = 1;
 733     lpDIBh->bmiHeader.biBitCount = 24;
 734     lpDIBh->bmiHeader.biCompression = BI_RGB;
 735     lpDIBh->bmiHeader.biClrUsed = 0;
 736     // These seem not really needed for our purpose here.
 737     lpDIBh->bmiHeader.biClrImportant = 0;
 738     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 739     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
 740     // memory for DIB data
 741     unsigned char *lpBits;
 742     lpBits = (unsigned char *)malloc( lpDIBh->bmiHeader.biSizeImage );
 743     if( !lpBits )
 744     {
 745         wxFAIL_MSG( _T("could not allocate memory for DIB") );
 746         free( lpDIBh );
 747         return bitmap;
 748     }
 749
 750     // create and set the device-dependent bitmap
 751     HDC hdc = ::GetDC(NULL);
 752     HDC memdc = ::CreateCompatibleDC( hdc );
 753     HBITMAP hbitmap;
 754     hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight );
 755     ::SelectObject( memdc, hbitmap);
 756
 757     // copy image data into DIB data and then into DDB (in a loop)
 758     unsigned char *data = GetData();
 759     int i, j, n;
 760     int origin = 0;
 761     unsigned char *ptdata = data;
 762     unsigned char *ptbits;
 763
 764     for( n=0; n<numDIB; n++ )
 765     {
 766         if( numDIB > 1 && n == numDIB-1 && hRemain > 0 )
 767         {
 768             // redefine height and size of the (possibly) last smaller DIB
 769             // memory is not reallocated
 770             height = hRemain;
 771             lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 772             lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 773         }
 774         ptbits = lpBits;
 775
 776         for( j=0; j<height; j++ )
 777         {
 778             for( i=0; i<width; i++ )
 779             {
 780                 *(ptbits++) = *(ptdata+2);
 781                 *(ptbits++) = *(ptdata+1);
 782                 *(ptbits++) = *(ptdata  );
 783                 ptdata += 3;
 784             }
 785             for( i=0; i< padding; i++ )   *(ptbits++) = 0;
 786         }
 787         ::StretchDIBits( memdc, 0, origin, width, height,\
 788             0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
 789         origin += height;
 790         // if numDIB = 1,  lines below can also be used
 791         //    hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
 792         // The above line is equivalent to the following two lines.
 793         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
 794         //    ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
 795         // or the following lines
 796         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
 797         //    HDC memdc = ::CreateCompatibleDC( hdc );
 798         //    ::SelectObject( memdc, hbitmap);
 799         //    ::SetDIBitsToDevice( memdc, 0, 0, width, height,
 800         //          0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
 801         //    ::SelectObject( memdc, 0 );
 802         //    ::DeleteDC( memdc );
 803     }
 804     bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
 805
 806     // similarly, created an mono-bitmap for the possible mask
 807     if( HasMask() )
 808     {
 809         hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL );
 810         ::SelectObject( memdc, hbitmap);
 811         if( numDIB == 1 )   height = bmpHeight;
 812         else                height = sizeLimit/bytePerLine;
 813         lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 814         lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 815         origin = 0;
 816         unsigned char r = GetMaskRed();
 817         unsigned char g = GetMaskGreen();
 818         unsigned char b = GetMaskBlue();
 819         unsigned char zero = 0, one = 255;
 820         ptdata = data;
 821         for( n=0; n<numDIB; n++ )
 822         {
 823             if( numDIB > 1 && n == numDIB - 1 && hRemain > 0 )
 824             {
 825                 // redefine height and size of the (possibly) last smaller DIB
 826                 // memory is not reallocated
 827                 height = hRemain;
 828                 lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 829                 lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 830             }
 831             ptbits = lpBits;
 832             for( int j=0; j<height; j++ )
 833             {
 834                 for(i=0; i<width; i++ )
 835                 {
 836                     if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
 837                     {
 838                         *(ptbits++) = one;
 839                         *(ptbits++) = one;
 840                         *(ptbits++) = one;
 841                     }
 842                     else
 843                     {
 844                         *(ptbits++) = zero;
 845                         *(ptbits++) = zero;
 846                         *(ptbits++) = zero;
 847                     }
 848                 }
 849                 for( i=0; i< padding; i++ )   *(ptbits++) = zero;
 850             }
 851             ::StretchDIBits( memdc, 0, origin, width, height,\
 852                 0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
 853             origin += height;
 854         }
 855         // create a wxMask object
 856         wxMask *mask = new wxMask();
 857         mask->SetMaskBitmap( (WXHBITMAP) hbitmap );
 858         bitmap.SetMask( mask );
 859         // It will be deleted when the wxBitmap object is deleted (as of 01/1999)
 860         /* The following can also be used but is slow to run
 861         wxColour colour( GetMaskRed(), GetMaskGreen(), GetMaskBlue());
 862         wxMask *mask = new wxMask( bitmap, colour );
 863         bitmap.SetMask( mask );
 864         */
 865     }
 866
 867     // free allocated resources
 868     ::SelectObject( memdc, 0 );
 869     ::DeleteDC( memdc );
 870     ::ReleaseDC(NULL, hdc);
 871     free(lpDIBh);
 872     free(lpBits);
 873
 874     // check the wxBitmap object
 875     if( bitmap.GetHBITMAP() )
 876         bitmap.SetOk( TRUE );
 877     else
 878         bitmap.SetOk( FALSE );
 879
 880     return bitmap;
 881 }
 882
 883 wxImage::wxImage( const wxBitmap &bitmap )
 884 {
 885     // check the bitmap
 886     if( !bitmap.Ok() )
 887     {
 888         wxFAIL_MSG( _T("invalid bitmap") );
 889         return;
 890     }
 891
 892     // create an wxImage object
 893     int width = bitmap.GetWidth();
 894     int height = bitmap.GetHeight();
 895     Create( width, height );
 896     unsigned char *data = GetData();
 897     if( !data )
 898     {
 899         wxFAIL_MSG( _T("could not allocate data for image") );
 900         return;
 901     }
 902
 903     // calc the number of bytes per scanline and padding in the DIB
 904     int bytePerLine = width*3;
 905     int sizeDWORD = sizeof( DWORD );
 906     int lineBoundary =  bytePerLine % sizeDWORD;
 907     int padding = 0;
 908     if( lineBoundary > 0 )
 909     {
 910         padding = sizeDWORD - lineBoundary;
 911         bytePerLine += padding;
 912     }
 913
 914     // create a DIB header
 915     int headersize = sizeof(BITMAPINFOHEADER);
 916     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 917     if( !lpDIBh )
 918     {
 919         wxFAIL_MSG( _T("could not allocate data for DIB header") );
 920         free( data );
 921         return;
 922     }
 923     // Fill in the DIB header
 924     lpDIBh->bmiHeader.biSize = headersize;
 925     lpDIBh->bmiHeader.biWidth = width;
 926     lpDIBh->bmiHeader.biHeight = -height;
 927     lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
 928     lpDIBh->bmiHeader.biPlanes = 1;
 929     lpDIBh->bmiHeader.biBitCount = 24;
 930     lpDIBh->bmiHeader.biCompression = BI_RGB;
 931     lpDIBh->bmiHeader.biClrUsed = 0;
 932     // These seem not really needed for our purpose here.
 933     lpDIBh->bmiHeader.biClrImportant = 0;
 934     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 935     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
 936     // memory for DIB data
 937     unsigned char *lpBits;
 938     lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
 939     if( !lpBits )
 940     {
 941         wxFAIL_MSG( _T("could not allocate data for DIB") );
 942         free( data );
 943         free( lpDIBh );
 944         return;
 945     }
 946
 947     // copy data from the device-dependent bitmap to the DIB
 948     HDC hdc = ::GetDC(NULL);
 949     HBITMAP hbitmap;
 950     hbitmap = (HBITMAP) bitmap.GetHBITMAP();
 951     ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
 952
 953     // copy DIB data into the wxImage object
 954     int i, j;
 955     unsigned char *ptdata = data;
 956     unsigned char *ptbits = lpBits;
 957     for( i=0; i<height; i++ )
 958     {
 959         for( j=0; j<width; j++ )
 960         {
 961             *(ptdata++) = *(ptbits+2);
 962             *(ptdata++) = *(ptbits+1);
 963             *(ptdata++) = *(ptbits  );
 964             ptbits += 3;
 965         }
 966         ptbits += padding;
 967     }
 968
 969     // similarly, set data according to the possible mask bitmap
 970     if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
 971     {
 972         hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
 973         // memory DC created, color set, data copied, and memory DC deleted
 974         HDC memdc = ::CreateCompatibleDC( hdc );
 975         ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
 976         ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
 977         ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
 978         ::DeleteDC( memdc );
 979         // background color set to RGB(16,16,16) in consistent with wxGTK
 980         unsigned char r=16, g=16, b=16;
 981         ptdata = data;
 982         ptbits = lpBits;
 983         for( i=0; i<height; i++ )
 984         {
 985             for( j=0; j<width; j++ )
 986             {
 987                 if( *ptbits != 0 )
 988                     ptdata += 3;
 989                 else
 990                 {
 991                     *(ptdata++)  = r;
 992                     *(ptdata++)  = g;
 993                     *(ptdata++)  = b;
 994                 }
 995                 ptbits += 3;
 996             }
 997             ptbits += padding;
 998         }
 999         SetMaskColour( r, g, b );
1000         SetMask( TRUE );
1001     }
1002     else
1003     {
1004         SetMask( FALSE );
1005     }
1006     // free allocated resources
1007     ::ReleaseDC(NULL, hdc);
1008     free(lpDIBh);
1009     free(lpBits);
1010 }
1011
1012 #endif
1013
1014 //-----------------------------------------------------------------------------
1015 // GTK conversion routines
1016 //-----------------------------------------------------------------------------
1017
1018 #ifdef __WXGTK__
1019
1020 #include "gtk/gtk.h"
1021 #include "gdk/gdk.h"
1022 #include "gdk/gdkx.h"
1023
1024 #if (GTK_MINOR_VERSION > 0)
1025 #include "gdk/gdkrgb.h"
1026 #endif
1027
1028 wxBitmap wxImage::ConvertToBitmap() const
1029 {
1030     wxBitmap bitmap;
1031
1032     wxCHECK_MSG( Ok(), bitmap, _T("invalid image") );
1033
1034     int width = GetWidth();
1035     int height = GetHeight();
1036
1037     bitmap.SetHeight( height );
1038     bitmap.SetWidth( width );
1039
1040     bitmap.SetPixmap( gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, -1 ) );
1041
1042      // Retrieve depth
1043
1044     GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
1045     if (visual == NULL) visual = gdk_visual_get_system();
1046     int bpp = visual->depth;
1047
1048     bitmap.SetDepth( bpp );
1049
1050     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1051     if (bpp < 8) bpp = 8;
1052
1053 #if (GTK_MINOR_VERSION > 0)
1054
1055     if (!HasMask() && (bpp > 8))
1056     {
1057         static bool s_hasInitialized = FALSE;
1058
1059         if (!s_hasInitialized)
1060         {
1061             gdk_rgb_init();
1062             s_hasInitialized = TRUE;
1063         }
1064
1065         GdkGC *gc = gdk_gc_new( bitmap.GetPixmap() );
1066
1067         gdk_draw_rgb_image( bitmap.GetPixmap(),
1068                             gc,
1069                             0, 0,
1070                             width, height,
1071                             GDK_RGB_DITHER_NONE,
1072                             GetData(),
1073                             width*3 );
1074
1075         gdk_gc_unref( gc );
1076
1077         return bitmap;
1078     }
1079
1080 #endif
1081
1082     // Create picture image
1083
1084     GdkImage *data_image =
1085         gdk_image_new( GDK_IMAGE_FASTEST, gdk_visual_get_system(), width, height );
1086
1087     // Create mask image
1088
1089     GdkImage *mask_image = (GdkImage*) NULL;
1090
1091     if (HasMask())
1092     {
1093         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1094
1095         mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1096
1097         wxMask *mask = new wxMask();
1098         mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1099
1100         bitmap.SetMask( mask );
1101     }
1102
1103     // Render
1104
1105     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1106     byte_order b_o = RGB;
1107
1108     if (bpp >= 24)
1109     {
1110         GdkVisual *visual = gdk_visual_get_system();
1111         if ((visual->red_mask > visual->green_mask) && (visual->green_mask > visual->blue_mask))      b_o = RGB;
1112         else if ((visual->red_mask > visual->blue_mask) && (visual->blue_mask > visual->green_mask))  b_o = RGB;
1113         else if ((visual->blue_mask > visual->red_mask) && (visual->red_mask > visual->green_mask))   b_o = BRG;
1114         else if ((visual->blue_mask > visual->green_mask) && (visual->green_mask > visual->red_mask)) b_o = BGR;
1115         else if ((visual->green_mask > visual->red_mask) && (visual->red_mask > visual->blue_mask))   b_o = GRB;
1116         else if ((visual->green_mask > visual->blue_mask) && (visual->blue_mask > visual->red_mask))  b_o = GBR;
1117     }
1118
1119     int r_mask = GetMaskRed();
1120     int g_mask = GetMaskGreen();
1121     int b_mask = GetMaskBlue();
1122
1123     unsigned char* data = GetData();
1124
1125     int index = 0;
1126     for (int y = 0; y < height; y++)
1127     {
1128         for (int x = 0; x < width; x++)
1129         {
1130             int r = data[index];
1131             index++;
1132             int g = data[index];
1133             index++;
1134             int b = data[index];
1135             index++;
1136
1137             if (HasMask())
1138             {
1139                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1140                     gdk_image_put_pixel( mask_image, x, y, 1 );
1141                 else
1142                     gdk_image_put_pixel( mask_image, x, y, 0 );
1143             }
1144
1145             if (HasMask())
1146             {
1147                 if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1148                     gdk_image_put_pixel( mask_image, x, y, 1 );
1149                 else
1150                     gdk_image_put_pixel( mask_image, x, y, 0 );
1151             }
1152
1153             switch (bpp)
1154             {
1155             case 8:
1156                 {
1157                     int pixel = -1;
1158                     if (wxTheApp->m_colorCube)
1159                     {
1160                         pixel = wxTheApp->m_colorCube[ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1161                     }
1162                     else
1163                     {
1164                         GdkColormap *cmap = gtk_widget_get_default_colormap();
1165                         GdkColor *colors = cmap->colors;
1166                         int max = 3 * (65536);
1167
1168                         for (int i = 0; i < cmap->size; i++)
1169                         {
1170                             int rdiff = (r << 8) - colors[i].red;
1171                             int gdiff = (g << 8) - colors[i].green;
1172                             int bdiff = (b << 8) - colors[i].blue;
1173                             int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
1174                             if (sum < max) { pixel = i; max = sum; }
1175                         }
1176                     }
1177
1178                     gdk_image_put_pixel( data_image, x, y, pixel );
1179
1180                     break;
1181                 }
1182             case 15:
1183                 {
1184                     guint32 pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1185                     gdk_image_put_pixel( data_image, x, y, pixel );
1186                     break;
1187                 }
1188             case 16:
1189                 {
1190                     guint32 pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1191                     gdk_image_put_pixel( data_image, x, y, pixel );
1192                     break;
1193                 }
1194             case 32:
1195             case 24:
1196                 {
1197                     guint32 pixel = 0;
1198                     switch (b_o)
1199                     {
1200                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1201                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1202                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1203                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1204                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1205                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1206                     }
1207                     gdk_image_put_pixel( data_image, x, y, pixel );
1208                 }
1209             default: break;
1210             }
1211         } // for
1212     }  // for
1213
1214     // Blit picture
1215
1216     GdkGC *data_gc = gdk_gc_new( bitmap.GetPixmap() );
1217
1218     gdk_draw_image( bitmap.GetPixmap(), data_gc, data_image, 0, 0, 0, 0, width, height );
1219
1220     gdk_image_destroy( data_image );
1221     gdk_gc_unref( data_gc );
1222
1223     // Blit mask
1224
1225     if (HasMask())
1226     {
1227         GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1228
1229         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1230
1231         gdk_image_destroy( mask_image );
1232         gdk_gc_unref( mask_gc );
1233     }
1234
1235     return bitmap;
1236 }
1237
1238 wxImage::wxImage( const wxBitmap &bitmap )
1239 {
1240     wxCHECK_RET( bitmap.Ok(), _T("invalid bitmap") );
1241
1242     GdkImage *gdk_image = gdk_image_get( bitmap.GetPixmap(),
1243         0, 0,
1244         bitmap.GetWidth(), bitmap.GetHeight() );
1245
1246     wxCHECK_RET( gdk_image, _T("couldn't create image") );
1247
1248     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1249     char unsigned *data = GetData();
1250
1251     if (!data)
1252     {
1253         gdk_image_destroy( gdk_image );
1254         wxFAIL_MSG( _T("couldn't create image") );
1255         return;
1256     }
1257
1258     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1259     if (bitmap.GetMask())
1260     {
1261         gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1262             0, 0,
1263             bitmap.GetWidth(), bitmap.GetHeight() );
1264
1265         SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1266     }
1267
1268     GdkVisual *visual = gdk_window_get_visual( bitmap.GetPixmap() );
1269     if (visual == NULL) visual = gdk_window_get_visual( (GdkWindow*) &gdk_root_parent );
1270     int bpp = visual->depth;
1271     if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
1272
1273     GdkColormap *cmap = gtk_widget_get_default_colormap();
1274
1275     long pos = 0;
1276     for (int j = 0; j < bitmap.GetHeight(); j++)
1277     {
1278         for (int i = 0; i < bitmap.GetWidth(); i++)
1279         {
1280             wxInt32 pixel = gdk_image_get_pixel( gdk_image, i, j );
1281             pixel = wxINT32_SWAP_ON_BE( pixel );
1282             if (bpp <= 8)
1283             {
1284                 data[pos] = cmap->colors[pixel].red >> 8;
1285                 data[pos+1] = cmap->colors[pixel].green >> 8;
1286                 data[pos+2] = cmap->colors[pixel].blue >> 8;
1287             } else if (bpp == 15)
1288             {
1289                 data[pos] = (pixel >> 7) & 0xf8;
1290                 data[pos+1] = (pixel >> 2) & 0xf8;
1291                 data[pos+2] = (pixel << 3) & 0xf8;
1292             } else if (bpp == 16)
1293             {
1294                 data[pos] = (pixel >> 8) & 0xf8;
1295                 data[pos+1] = (pixel >> 3) & 0xfc;
1296                 data[pos+2] = (pixel << 3) & 0xf8;
1297             } else
1298             {
1299                 data[pos] = (pixel >> 16) & 0xff;
1300                 data[pos+1] = (pixel >> 8) & 0xff;
1301                 data[pos+2] = pixel & 0xff;
1302             }
1303
1304             if (gdk_image_mask)
1305             {
1306                 int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1307                 if (mask_pixel == 0)
1308                 {
1309                     data[pos] = 16;
1310                     data[pos+1] = 16;
1311                     data[pos+2] = 16;
1312                 }
1313             }
1314
1315             pos += 3;
1316         }
1317     }
1318
1319     gdk_image_destroy( gdk_image );
1320     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1321 }
1322
1323 #endif
1324
1325 //-----------------------------------------------------------------------------
1326 // Motif conversion routines
1327 //-----------------------------------------------------------------------------
1328
1329 #ifdef __WXMOTIF__
1330
1331 #include <Xm/Xm.h>
1332 #include "wx/utils.h"
1333 #include <math.h>
1334
1335 wxBitmap wxImage::ConvertToBitmap() const
1336 {
1337     wxBitmap bitmap;
1338
1339     wxCHECK_MSG( Ok(), bitmap, _T("invalid image") );
1340
1341     int width = GetWidth();
1342     int height = GetHeight();
1343
1344     bitmap.SetHeight( height );
1345     bitmap.SetWidth( width );
1346
1347     Display *dpy = (Display*) wxGetDisplay();
1348     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1349     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1350
1351     // Create image
1352
1353     XImage *data_image = XCreateImage( dpy, vis, bpp, ZPixmap, 0, 0, width, height, 32, 0 );
1354     data_image->data = (char*) malloc( data_image->bytes_per_line * data_image->height );
1355
1356     bitmap.Create( width, height, bpp );
1357
1358     /*
1359     // Create mask
1360
1361       GdkImage *mask_image = (GdkImage*) NULL;
1362
1363         if (HasMask())
1364         {
1365         unsigned char *mask_data = (unsigned char*)malloc( ((width >> 3)+8) * height );
1366
1367           mask_image =  gdk_image_new_bitmap( gdk_visual_get_system(), mask_data, width, height );
1368
1369             wxMask *mask = new wxMask();
1370             mask->m_bitmap = gdk_pixmap_new( (GdkWindow*)&gdk_root_parent, width, height, 1 );
1371
1372               bitmap.SetMask( mask );
1373               }
1374     */
1375
1376     // Retrieve depth info
1377
1378     XVisualInfo vinfo_template;
1379     XVisualInfo *vi;
1380
1381     vinfo_template.visual = vis;
1382     vinfo_template.visualid = XVisualIDFromVisual( vis );
1383     vinfo_template.depth = bpp;
1384     int nitem = 0;
1385
1386     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1387
1388     wxCHECK_MSG( vi, wxNullBitmap, _T("no visual") );
1389
1390     XFree( vi );
1391
1392     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1393     if (bpp < 8) bpp = 8;
1394
1395     // Render
1396
1397     enum byte_order { RGB, RBG, BRG, BGR, GRB, GBR };
1398     byte_order b_o = RGB;
1399
1400     if (bpp >= 24)
1401     {
1402         if ((vi->red_mask > vi->green_mask) && (vi->green_mask > vi->blue_mask))      b_o = RGB;
1403         else if ((vi->red_mask > vi->blue_mask) && (vi->blue_mask > vi->green_mask))  b_o = RGB;
1404         else if ((vi->blue_mask > vi->red_mask) && (vi->red_mask > vi->green_mask))   b_o = BRG;
1405         else if ((vi->blue_mask > vi->green_mask) && (vi->green_mask > vi->red_mask)) b_o = BGR;
1406         else if ((vi->green_mask > vi->red_mask) && (vi->red_mask > vi->blue_mask))   b_o = GRB;
1407         else if ((vi->green_mask > vi->blue_mask) && (vi->blue_mask > vi->red_mask))  b_o = GBR;
1408     }
1409
1410     /*
1411     int r_mask = GetMaskRed();
1412     int g_mask = GetMaskGreen();
1413     int b_mask = GetMaskBlue();
1414     */
1415
1416     XColor colors[256];
1417     if (bpp == 8)
1418     {
1419         Colormap cmap = (Colormap) wxTheApp->GetMainColormap( dpy );
1420
1421         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1422         XQueryColors( dpy, cmap, colors, 256 );
1423     }
1424
1425     unsigned char* data = GetData();
1426
1427     int index = 0;
1428     for (int y = 0; y < height; y++)
1429     {
1430         for (int x = 0; x < width; x++)
1431         {
1432             int r = data[index];
1433             index++;
1434             int g = data[index];
1435             index++;
1436             int b = data[index];
1437             index++;
1438
1439             /*
1440             if (HasMask())
1441             {
1442             if ((r == r_mask) && (b == b_mask) && (g == g_mask))
1443             gdk_image_put_pixel( mask_image, x, y, 1 );
1444             else
1445             gdk_image_put_pixel( mask_image, x, y, 0 );
1446             }
1447             */
1448
1449             switch (bpp)
1450             {
1451             case 8:
1452                 {
1453                     int pixel = -1;
1454                     /*
1455                     if (wxTheApp->m_colorCube)
1456                     {
1457                     pixel = wxTheApp->m_colorCube
1458                     [ ((r & 0xf8) << 7) + ((g & 0xf8) << 2) + ((b & 0xf8) >> 3) ];
1459                     }
1460                     else
1461                     {
1462                     */
1463                     int max = 3 * (65536);
1464                     for (int i = 0; i < 256; i++)
1465                     {
1466                         int rdiff = (r << 8) - colors[i].red;
1467                         int gdiff = (g << 8) - colors[i].green;
1468                         int bdiff = (b << 8) - colors[i].blue;
1469                         int sum = abs (rdiff) + abs (gdiff) + abs (bdiff);
1470                         if (sum < max) { pixel = i; max = sum; }
1471                     }
1472                     /*
1473                     }
1474                     */
1475                     XPutPixel( data_image, x, y, pixel );
1476                     break;
1477                 }
1478             case 15:
1479                 {
1480                     int pixel = ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | ((b & 0xf8) >> 3);
1481                     XPutPixel( data_image, x, y, pixel );
1482                     break;
1483                 }
1484             case 16:
1485                 {
1486                     int pixel = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | ((b & 0xf8) >> 3);
1487                     XPutPixel( data_image, x, y, pixel );
1488                     break;
1489                 }
1490             case 32:
1491             case 24:
1492                 {
1493                     int pixel = 0;
1494                     switch (b_o)
1495                     {
1496                     case RGB: pixel = (r << 16) | (g << 8) | b; break;
1497                     case RBG: pixel = (r << 16) | (b << 8) | g; break;
1498                     case BRG: pixel = (b << 16) | (r << 8) | g; break;
1499                     case BGR: pixel = (b << 16) | (g << 8) | r; break;
1500                     case GRB: pixel = (g << 16) | (r << 8) | b; break;
1501                     case GBR: pixel = (g << 16) | (b << 8) | r; break;
1502                     }
1503                     XPutPixel( data_image, x, y, pixel );
1504                 }
1505             default: break;
1506             }
1507         } // for
1508     }  // for
1509
1510     // Blit picture
1511
1512     XGCValues gcvalues;
1513     gcvalues.foreground = BlackPixel( dpy, DefaultScreen( dpy ) );
1514     GC gc = XCreateGC( dpy, RootWindow ( dpy, DefaultScreen(dpy) ), GCForeground, &gcvalues );
1515     XPutImage( dpy, (Drawable)bitmap.GetPixmap(), gc, data_image, 0, 0, 0, 0, width, height );
1516
1517     XDestroyImage( data_image );
1518     XFreeGC( dpy, gc );
1519
1520     /*
1521     // Blit mask
1522
1523       if (HasMask())
1524       {
1525       GdkGC *mask_gc = gdk_gc_new( bitmap.GetMask()->GetBitmap() );
1526
1527         gdk_draw_image( bitmap.GetMask()->GetBitmap(), mask_gc, mask_image, 0, 0, 0, 0, width, height );
1528
1529           gdk_image_destroy( mask_image );
1530           gdk_gc_unref( mask_gc );
1531           }
1532     */
1533
1534     return bitmap;
1535 }
1536
1537 wxImage::wxImage( const wxBitmap &bitmap )
1538 {
1539     wxCHECK_RET( bitmap.Ok(), _T("invalid bitmap") );
1540
1541     Display *dpy = (Display*) wxGetDisplay();
1542     Visual* vis = DefaultVisual( dpy, DefaultScreen( dpy ) );
1543     int bpp = DefaultDepth( dpy, DefaultScreen( dpy ) );
1544
1545     XImage *ximage = XGetImage( dpy,
1546         (Drawable)bitmap.GetPixmap(),
1547         0, 0,
1548         bitmap.GetWidth(), bitmap.GetHeight(),
1549         AllPlanes, ZPixmap );
1550
1551     wxCHECK_RET( ximage, _T("couldn't create image") );
1552
1553     Create( bitmap.GetWidth(), bitmap.GetHeight() );
1554     char unsigned *data = GetData();
1555
1556     if (!data)
1557     {
1558         XDestroyImage( ximage );
1559         wxFAIL_MSG( _T("couldn't create image") );
1560         return;
1561     }
1562
1563     /*
1564     GdkImage *gdk_image_mask = (GdkImage*) NULL;
1565     if (bitmap.GetMask())
1566     {
1567     gdk_image_mask = gdk_image_get( bitmap.GetMask()->GetBitmap(),
1568     0, 0,
1569     bitmap.GetWidth(), bitmap.GetHeight() );
1570
1571       SetMaskColour( 16, 16, 16 );  // anything unlikely and dividable
1572       }
1573     */
1574
1575     // Retrieve depth info
1576
1577     XVisualInfo vinfo_template;
1578     XVisualInfo *vi;
1579
1580     vinfo_template.visual = vis;
1581     vinfo_template.visualid = XVisualIDFromVisual( vis );
1582     vinfo_template.depth = bpp;
1583     int nitem = 0;
1584
1585     vi = XGetVisualInfo( dpy, VisualIDMask|VisualDepthMask, &vinfo_template, &nitem );
1586
1587     wxCHECK_RET( vi, _T("no visual") );
1588
1589     if ((bpp == 16) && (vi->red_mask != 0xf800)) bpp = 15;
1590
1591     XFree( vi );
1592
1593     XColor colors[256];
1594     if (bpp == 8)
1595     {
1596         Colormap cmap = (Colormap)wxTheApp->GetMainColormap( dpy );
1597
1598         for (int i = 0; i < 256; i++) colors[i].pixel = i;
1599         XQueryColors( dpy, cmap, colors, 256 );
1600     }
1601
1602     long pos = 0;
1603     for (int j = 0; j < bitmap.GetHeight(); j++)
1604     {
1605         for (int i = 0; i < bitmap.GetWidth(); i++)
1606         {
1607             int pixel = XGetPixel( ximage, i, j );
1608             if (bpp <= 8)
1609             {
1610                 data[pos] = colors[pixel].red >> 8;
1611                 data[pos+1] = colors[pixel].green >> 8;
1612                 data[pos+2] = colors[pixel].blue >> 8;
1613             } else if (bpp == 15)
1614             {
1615                 data[pos] = (pixel >> 7) & 0xf8;
1616                 data[pos+1] = (pixel >> 2) & 0xf8;
1617                 data[pos+2] = (pixel << 3) & 0xf8;
1618             } else if (bpp == 16)
1619             {
1620                 data[pos] = (pixel >> 8) & 0xf8;
1621                 data[pos+1] = (pixel >> 3) & 0xfc;
1622                 data[pos+2] = (pixel << 3) & 0xf8;
1623             } else
1624             {
1625                 data[pos] = (pixel >> 16) & 0xff;
1626                 data[pos+1] = (pixel >> 8) & 0xff;
1627                 data[pos+2] = pixel & 0xff;
1628             }
1629
1630             /*
1631             if (gdk_image_mask)
1632             {
1633             int mask_pixel = gdk_image_get_pixel( gdk_image_mask, i, j );
1634             if (mask_pixel == 0)
1635             {
1636             data[pos] = 16;
1637             data[pos+1] = 16;
1638             data[pos+2] = 16;
1639             }
1640             }
1641             */
1642
1643             pos += 3;
1644         }
1645     }
1646
1647     XDestroyImage( ximage );
1648     /*
1649     if (gdk_image_mask) gdk_image_destroy( gdk_image_mask );
1650     */
1651 }
1652 #endif
1653
1654 // A module to allow wxImage initialization/cleanup
1655 // without calling these functions from app.cpp or from
1656 // the user's application.
1657
1658 class wxImageModule: public wxModule
1659 {
1660 DECLARE_DYNAMIC_CLASS(wxImageModule)
1661 public:
1662     wxImageModule() {}
1663     bool OnInit() { wxImage::InitStandardHandlers(); return TRUE; };
1664     void OnExit() { wxImage::CleanUpHandlers(); };
1665 };
1666
1667 IMPLEMENT_DYNAMIC_CLASS(wxImageModule, wxModule)