src/os2/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        bitmap.cpp
   3 // Purpose:     wxBitmap
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     08/08/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13     #pragma implementation "bitmap.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifndef WX_PRECOMP
  20     #include <stdio.h>
  21
  22     #include "wx/list.h"
  23     #include "wx/utils.h"
  24     #include "wx/app.h"
  25     #include "wx/palette.h"
  26     #include "wx/dcmemory.h"
  27     #include "wx/bitmap.h"
  28     #include "wx/icon.h"
  29 #endif
  30
  31 #include "wx/os2/private.h"
  32 #include "wx/log.h"
  33
  34 //#include "wx/msw/dib.h"
  35 #include "wx/image.h"
  36 #include "wx/xpmdecod.h"
  37
  38 // ----------------------------------------------------------------------------
  39 // macros
  40 // ----------------------------------------------------------------------------
  41
  42 IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
  43 IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
  44
  45 IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject)
  46
  47 // ============================================================================
  48 // implementation
  49 // ============================================================================
  50
  51 // ----------------------------------------------------------------------------
  52 // wxBitmapRefData
  53 // ----------------------------------------------------------------------------
  54
  55 wxBitmapRefData::wxBitmapRefData()
  56 {
  57     m_nQuality      = 0;
  58     m_pSelectedInto = NULL;
  59     m_nNumColors    = 0;
  60     m_pBitmapMask   = NULL;
  61     m_hBitmap = (WXHBITMAP) NULL;
  62 } // end of wxBitmapRefData::wxBitmapRefData
  63
  64 void wxBitmapRefData::Free()
  65 {
  66     if ( m_pSelectedInto )
  67     {
  68         wxLogLastError("GpiDeleteBitmap(hbitmap)");
  69     }
  70     if (m_hBitmap)
  71     {
  72         if (!::GpiDeleteBitmap((HBITMAP)m_hBitmap))
  73         {
  74             wxLogLastError("GpiDeleteBitmap(hbitmap)");
  75         }
  76     }
  77
  78     delete m_pBitmapMask;
  79     m_pBitmapMask = NULL;
  80 } // end of wxBitmapRefData::Free
  81
  82 // ----------------------------------------------------------------------------
  83 // wxBitmap creation
  84 // ----------------------------------------------------------------------------
  85
  86 // this function should be called from all wxBitmap ctors
  87 void wxBitmap::Init()
  88 {
  89 } // end of wxBitmap::Init
  90
  91 bool wxBitmap::CopyFromIconOrCursor(
  92   const wxGDIImage&                 rIcon
  93 )
  94 {
  95     HPOINTER                        hIcon = (HPOINTER)rIcon.GetHandle();
  96     POINTERINFO                     SIconInfo;
  97
  98     if (!::WinQueryPointerInfo(hIcon, &SIconInfo))
  99     {
 100         wxLogLastError(wxT("WinQueryPointerInfo"));
 101         return FALSE;
 102     }
 103     wxBitmapRefData*                pRefData = new wxBitmapRefData;
 104
 105     m_refData = pRefData;
 106
 107     int                             nWidth = rIcon.GetWidth();
 108     int                             nHeight = rIcon.GetHeight();
 109
 110     pRefData->m_nWidth  = nWidth;
 111     pRefData->m_nHeight = nHeight;
 112     pRefData->m_nDepth  = wxDisplayDepth();
 113
 114     pRefData->m_hBitmap = (WXHBITMAP)SIconInfo.hbmColor;
 115
 116     //
 117     // No mask in the Info struct in OS/2
 118     //
 119     return(TRUE);
 120 } // end of wxBitmap::CopyFromIconOrCursor
 121
 122 bool wxBitmap::CopyFromCursor(
 123   const wxCursor&                   rCursor
 124 )
 125 {
 126     UnRef();
 127
 128     if (!rCursor.Ok())
 129         return(FALSE);
 130     return(CopyFromIconOrCursor(rCursor));
 131 } // end of wxBitmap::CopyFromCursor
 132
 133 bool wxBitmap::CopyFromIcon(
 134   const wxIcon&                     rIcon
 135 )
 136 {
 137     UnRef();
 138
 139     if (!rIcon.Ok())
 140         return(FALSE);
 141
 142     return CopyFromIconOrCursor(rIcon);
 143 } // end of wxBitmap::CopyFromIcon
 144
 145 wxBitmap::~wxBitmap()
 146 {
 147 } // end of wxBitmap::~wxBitmap
 148
 149 wxBitmap::wxBitmap(
 150   const char                        zBits[]
 151 , int                               nWidth
 152 , int                               nHeight
 153 , int                               nDepth
 154 )
 155 {
 156     Init();
 157
 158     wxBitmapRefData*                pRefData = new wxBitmapRefData;
 159     BITMAPINFOHEADER2               vHeader;
 160     BITMAPINFO2                     vInfo;
 161     HDC                             hDc;
 162     HPS                             hPs;
 163     DEVOPENSTRUC                    vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
 164     SIZEL                           vSize = {0, 0};
 165     char*                           pzData;
 166
 167     wxASSERT(vHabmain != NULL);
 168
 169     m_refData = pRefData;
 170
 171     pRefData->m_nWidth        = nWidth;
 172     pRefData->m_nHeight       = nHeight;
 173     pRefData->m_nDepth        = nDepth;
 174     pRefData->m_nNumColors    = 0;
 175     pRefData->m_pSelectedInto = NULL;
 176
 177     hDc   = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
 178     hPs = ::GpiCreatePS(vHabmain, hDc, &vSize, GPIA_ASSOC | PU_PELS);
 179     if (hPs == 0)
 180     {
 181         wxLogLastError("GpiCreatePS Failure");
 182     }
 183
 184     if (nDepth == 1)
 185     {
 186         //
 187         // We assume that it is in XBM format which is not quite the same as
 188         // the format CreateBitmap() wants because the order of bytes in the
 189         // line is inversed!
 190         //
 191         const size_t                nBytesPerLine = (nWidth + 7) / 8;
 192         const size_t                nPadding = nBytesPerLine % 2;
 193         const size_t                nLen = nHeight * (nPadding + nBytesPerLine);
 194         const char*                 pzSrc = zBits;
 195         int                         nRows;
 196         size_t                      nCols;
 197
 198         pzData = (char *)malloc(nLen);
 199
 200         char*                       pzDst = pzData;
 201
 202         for (nRows = 0; nRows < nHeight; nRows++)
 203         {
 204             for (nCols = 0; nCols < nBytesPerLine; nCols++)
 205             {
 206                 unsigned char       ucVal = *pzSrc++;
 207                 unsigned char       ucReversed = 0;
 208                 int                 nBits;
 209
 210                 for (nBits = 0; nBits < 8; nBits++)
 211                 {
 212                     ucReversed <<= 1;
 213                     ucReversed |= (ucVal & 0x01);
 214                     ucVal >>= 1;
 215                 }
 216                 *pzDst++ = ucReversed;
 217             }
 218             if (nPadding)
 219                 *pzDst++ = 0;
 220         }
 221     }
 222     else
 223     {
 224         //
 225         // Bits should already be in Windows standard format
 226         //
 227         pzData = (char *)zBits;    // const_cast is harmless
 228     }
 229
 230     memset(&vHeader, '\0', 16);
 231     vHeader.cbFix           = 16;
 232     vHeader.cx              = (USHORT)nWidth;
 233     vHeader.cy              = (USHORT)nHeight;
 234     vHeader.cPlanes         = 1L;
 235     vHeader.cBitCount       = nDepth;
 236     vHeader.usReserved      = 0;
 237
 238     memset(&vInfo, '\0', 16);
 239     vInfo.cbFix           = 16;
 240     vInfo.cx              = (USHORT)nWidth;
 241     vInfo.cy              = (USHORT)nHeight;
 242     vInfo.cPlanes         = 1L;
 243     vInfo.cBitCount       = nDepth;
 244
 245     HBITMAP                         hBmp = ::GpiCreateBitmap(hPs, &vHeader, CBM_INIT, (PBYTE)pzData, &vInfo);
 246
 247     if (!hBmp)
 248     {
 249         wxLogLastError("CreateBitmap");
 250     }
 251     ::GpiDestroyPS(hPs);
 252     ::DevCloseDC(hDc);
 253     SetHBITMAP((WXHBITMAP)hBmp);
 254 } // end of wxBitmap::wxBitmap
 255
 256 wxBitmap::wxBitmap(
 257   int                               nW
 258 , int                               nH
 259 , int                               nD
 260 )
 261 {
 262     Init();
 263
 264     (void)Create( nW
 265                  ,nH
 266                  ,nD
 267                 );
 268 } // end of wxBitmap::wxBitmap
 269
 270 wxBitmap::wxBitmap(
 271   void*                             pData
 272 , long                              lType
 273 , int                               nWidth
 274 , int                               nHeight
 275 , int                               nDepth
 276 )
 277 {
 278     Init();
 279
 280     (void)Create( pData
 281                  ,lType
 282                  ,nWidth
 283                  ,nHeight
 284                  ,nDepth
 285                 );
 286 } // end of wxBitmap::wxBitmap
 287
 288 wxBitmap::wxBitmap(
 289   const wxString&                   rFilename
 290 , long                              lType
 291 )
 292 {
 293     Init();
 294
 295     LoadFile( rFilename
 296              ,(int)lType
 297             );
 298 } // end of wxBitmap::wxBitmap
 299
 300 bool wxBitmap::Create(
 301   int                               nW
 302 , int                               nH
 303 , int                               nD
 304 )
 305 {
 306     HBITMAP                         hBmp;
 307     BITMAPINFOHEADER2               vHeader;
 308
 309     wxASSERT(vHabmain != NULL);
 310     UnRef();
 311     m_refData = new wxBitmapRefData;
 312     GetBitmapData()->m_nWidth = nW;
 313     GetBitmapData()->m_nHeight = nH;
 314     GetBitmapData()->m_nDepth = nD;
 315
 316     if (nD > 0)
 317     {
 318         DEVOPENSTRUC                vDop  = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
 319         SIZEL                       vSize = {0, 0};
 320         HDC                         hDC   = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
 321         HPS                         hPS   = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
 322
 323         memset(&vHeader, '\0', 16);
 324         vHeader.cbFix     =  16;
 325         vHeader.cx        = nW;
 326         vHeader.cy        = nH;
 327         vHeader.cPlanes   = 1;
 328         vHeader.cBitCount = nD;
 329
 330         hBmp = ::GpiCreateBitmap( hPS
 331                                  ,&vHeader
 332                                  ,0L
 333                                  ,NULL
 334                                  ,NULL
 335                                 );
 336         ::GpiDestroyPS(hPS);
 337         ::DevCloseDC(hDC);
 338     }
 339     else
 340     {
 341         HPS                             hPSScreen;
 342         HDC                             hDCScreen;
 343         LONG                            lBitCount;
 344
 345         hPSScreen = ::WinGetScreenPS(HWND_DESKTOP);
 346         hDCScreen = ::GpiQueryDevice(hPSScreen);
 347         ::DevQueryCaps(hDCScreen, CAPS_COLOR_BITCOUNT, 1L, &lBitCount);
 348
 349         memset(&vHeader, '\0', 16);
 350         vHeader.cbFix     =  16;
 351         vHeader.cx        = nW;
 352         vHeader.cy        = nH;
 353         vHeader.cPlanes   = 1;
 354         vHeader.cBitCount = lBitCount;
 355
 356         hBmp = ::GpiCreateBitmap( hPSScreen
 357                                  ,&vHeader
 358                                  ,0L
 359                                  ,NULL
 360                                  ,NULL
 361                                 );
 362
 363         GetBitmapData()->m_nDepth = wxDisplayDepth();
 364         ::WinReleasePS(hPSScreen);
 365     }
 366     SetHBITMAP((WXHBITMAP)hBmp);
 367
 368 #if WXWIN_COMPATIBILITY_2
 369     GetBitmapData()->m_bOk = hBmp != 0;
 370 #endif // WXWIN_COMPATIBILITY_2
 371
 372     return Ok();
 373 } // end of wxBitmap::Create
 374
 375 bool wxBitmap::CreateFromXpm(
 376   const char**                      ppData
 377 )
 378 {
 379 #if wxUSE_IMAGE && wxUSE_XPM
 380     Init();
 381
 382     wxCHECK_MSG(ppData != NULL, FALSE, wxT("invalid bitmap data"))
 383
 384     wxXPMDecoder                    vDecoder;
 385     wxImage                         vImg = vDecoder.ReadData(ppData);
 386
 387     wxCHECK_MSG(vImg.Ok(), FALSE, wxT("invalid bitmap data"))
 388
 389     *this = wxBitmap(vImg);
 390     return TRUE;
 391 #else
 392     return FALSE;
 393 #endif
 394 } // end of wxBitmap::CreateFromXpm
 395
 396 bool wxBitmap::LoadFile(
 397   const wxString&                   rFilename
 398 , long                              lType
 399 )
 400 {
 401     HPS                             hPs = NULLHANDLE;
 402
 403     UnRef();
 404
 405     wxBitmapHandler*                pHandler = wxDynamicCast( FindHandler(lType)
 406                                                              ,wxBitmapHandler
 407                                                             );
 408
 409     if (pHandler)
 410     {
 411         m_refData = new wxBitmapRefData;
 412
 413         return(pHandler->LoadFile( this
 414                                   ,rFilename
 415                                   ,hPs
 416                                   ,lType
 417                                   , -1
 418                                   , -1
 419                                  ));
 420     }
 421     else
 422     {
 423         wxImage                     vImage;
 424
 425         if (!vImage.LoadFile(rFilename, lType) || !vImage.Ok() )
 426             return(FALSE);
 427
 428         *this = wxBitmap(vImage);
 429
 430         return(TRUE);
 431     }
 432 } // end of wxBitmap::LoadFile
 433
 434 bool wxBitmap::Create(
 435   void*                             pData
 436 , long                              lType
 437 , int                               nWidth
 438 , int                               nHeight
 439 , int                               nDepth
 440 )
 441 {
 442     UnRef();
 443
 444     wxBitmapHandler*                pHandler = wxDynamicCast( FindHandler(lType)
 445                                                              ,wxBitmapHandler
 446                                                             );
 447
 448     if (!pHandler)
 449     {
 450         wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for "
 451                        "type %d defined."), lType);
 452
 453         return(FALSE);
 454     }
 455
 456     m_refData = new wxBitmapRefData;
 457
 458     return(pHandler->Create( this
 459                             ,pData
 460                             ,lType
 461                             ,nWidth
 462                             ,nHeight
 463                             ,nDepth
 464                            ));
 465 } // end of wxBitmap::Create
 466
 467 bool wxBitmap::SaveFile(
 468   const wxString&                   rFilename
 469 , int                               lType
 470 , const wxPalette*                  pPalette
 471 )
 472 {
 473     wxBitmapHandler*                pHandler = wxDynamicCast( FindHandler(lType)
 474                                                              ,wxBitmapHandler
 475                                                             );
 476
 477     if (pHandler)
 478     {
 479         return pHandler->SaveFile( this
 480                                   ,rFilename
 481                                   ,lType
 482                                   ,pPalette
 483                                  );
 484     }
 485     else
 486     {
 487         // FIXME what about palette? shouldn't we use it?
 488         wxImage                     vImage = ConvertToImage();
 489
 490         if (!vImage.Ok())
 491             return(FALSE);
 492
 493         return(vImage.SaveFile( rFilename
 494                                ,lType
 495                               ));
 496     }
 497 } // end of wxBitmap::SaveFile
 498
 499
 500 // ----------------------------------------------------------------------------
 501 // wxImage-wxBitmap convertion
 502 // ----------------------------------------------------------------------------
 503
 504 bool wxBitmap::CreateFromImage (
 505   const wxImage&                    rImage
 506 , int                               nDepth
 507 )
 508 {
 509     wxCHECK_MSG(rImage.Ok(), FALSE, wxT("invalid image"));
 510     m_refData = new wxBitmapRefData();
 511
 512
 513     int                             nSizeLimit = 1024 * 768 * 3;
 514     int                             nWidth = rImage.GetWidth();
 515     int                             nBmpHeight = rImage.GetHeight();
 516     int                             nBytePerLine = nWidth * 3;
 517     int                             nSizeDWORD = sizeof(DWORD);
 518     int                             nLineBoundary = nBytePerLine % nSizeDWORD;
 519     int                             nPadding = 0;
 520
 521     if (nLineBoundary > 0)
 522     {
 523         nPadding = nSizeDWORD - nLineBoundary;
 524         nBytePerLine += nPadding;
 525     }
 526
 527     //
 528     // Calc the number of DIBs and heights of DIBs
 529     //
 530     int                             nNumDIB = 1;
 531     int                             nHRemain = 0;
 532     int                             nHeight = nSizeLimit / nBytePerLine;
 533
 534     if (nHeight >= nBmpHeight)
 535         nHeight = nBmpHeight;
 536     else
 537     {
 538         nNumDIB  = nBmpHeight / nHeight;
 539         nHRemain = nBmpHeight % nHeight;
 540         if (nHRemain > 0)
 541             nNumDIB++;
 542     }
 543
 544     //
 545     // Set bitmap parameters
 546     //
 547     wxCHECK_MSG(rImage.Ok(), FALSE, wxT("invalid image"));
 548     SetWidth(nWidth);
 549     SetHeight(nBmpHeight);
 550     if (nDepth == -1)
 551         nDepth = 16; // wxDisplayDepth();
 552     SetDepth(nDepth);
 553
 554 #if wxUSE_PALETTE
 555     //
 556     // Copy the palette from the source image
 557     //
 558     SetPalette(rImage.GetPalette());
 559 #endif // wxUSE_PALETTE
 560
 561     //
 562     // Create a DIB header
 563     //
 564     BITMAPINFOHEADER2               vHeader;
 565     BITMAPINFO2                     vInfo;
 566
 567     //
 568     // Fill in the DIB header
 569     //
 570     memset(&vHeader, '\0', 16);
 571     vHeader.cbFix           = 16;
 572     vHeader.cx              = (ULONG)nWidth;
 573     vHeader.cy              = (ULONG)nHeight;
 574     vHeader.cPlanes         = 1L;
 575     vHeader.cBitCount       = 24;
 576
 577     memset(&vInfo, '\0', 16);
 578     vInfo.cbFix           = 16;
 579     vInfo.cx              = (ULONG)nWidth;
 580     vInfo.cy              = (ULONG)nHeight;
 581     vInfo.cPlanes         = 1L;
 582     vInfo.cBitCount       = 24;
 583     //
 584     // Memory for DIB data
 585     //
 586     unsigned char*                  pucBits;
 587
 588     pucBits = (unsigned char *)malloc(nBytePerLine * nHeight);
 589     if(!pucBits)
 590     {
 591         wxFAIL_MSG(wxT("could not allocate memory for DIB"));
 592         return FALSE;
 593     }
 594
 595     //
 596     // Create and set the device-dependent bitmap
 597     //
 598     DEVOPENSTRUC                    vDop  = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
 599     SIZEL                           vSize = {0, 0};
 600     HDC                             hDC   = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
 601     HPS                             hPS   = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
 602     LONG                            lScans;
 603     HDC                             hDCScreen = ::WinOpenWindowDC(HWND_DESKTOP);
 604     HPS                             hPSScreen;
 605     HBITMAP                         hBmp;
 606     HBITMAP                         hBmpOld;
 607
 608     hBmp = ::GpiCreateBitmap( hPS
 609                              ,&vHeader
 610                              ,0L
 611                              ,NULL
 612                              ,NULL
 613                             );
 614     hBmpOld = ::GpiSetBitmap(hPS, hBmp);
 615 #if wxUSE_PALETTE
 616     HPAL                            hOldPalette = NULLHANDLE;
 617     if (rImage.GetPalette().Ok())
 618     {
 619         hOldPalette = ::GpiSelectPalette(hPS, (HPAL)rImage.GetPalette().GetHPALETTE());
 620     }
 621 #endif // wxUSE_PALETTE
 622
 623     //
 624     // Copy image data into DIB data and then into DDB (in a loop)
 625     //
 626     unsigned char*                  pData = rImage.GetData();
 627     int                             i;
 628     int                             j;
 629     int                             n;
 630     int                             nOrigin = 0;
 631     unsigned char*                  ptdata = pData;
 632     unsigned char*                  ptbits;
 633
 634     for (n = 0; n < nNumDIB; n++)
 635     {
 636         if (nNumDIB > 1 && n == nNumDIB - 1 && nHRemain > 0)
 637         {
 638             //
 639             // Redefine height and size of the (possibly) last smaller DIB
 640             // memory is not reallocated
 641             //
 642             nHeight         = nHRemain;
 643             vHeader.cy      = (DWORD)(nHeight);
 644             vHeader.cbImage = nBytePerLine * nHeight;
 645         }
 646         ptbits = pucBits;
 647         for (j = 0; j < nHeight; j++)
 648         {
 649             for (i = 0; i < nWidth; i++)
 650             {
 651                 *(ptbits++) = *(ptdata + 2);
 652                 *(ptbits++) = *(ptdata + 1);
 653                 *(ptbits++) = *(ptdata);
 654                 ptdata += 3;
 655             }
 656             for (i = 0; i < nPadding; i++)
 657                 *(ptbits++) = 0;
 658         }
 659
 660         //
 661         // Have to do something similar to WIN32's StretchDIBits, use GpiBitBlt
 662         // in combination with setting the bits into the selected bitmap
 663         //
 664         lScans = ::GpiSetBitmapBits( hPS
 665                                     ,0             // Start at the bottom
 666                                     ,(LONG)nHeight // One line per scan
 667                                     ,(PBYTE)pucBits
 668                                     ,&vInfo
 669                                    );
 670         hPSScreen = ::GpiCreatePS( vHabmain
 671                                   ,hDCScreen
 672                                   ,&vSize
 673                                   ,PU_PELS | GPIA_ASSOC
 674                                  );
 675
 676         POINTL                      vPoint[4] = { 0, nOrigin,
 677                                                   nWidth, nHeight,
 678                                                   0, 0, nWidth, nHeight
 679                                                 };
 680
 681
 682         ::GpiBitBlt( hPSScreen
 683                     ,hPS
 684                     ,4
 685                     ,vPoint
 686                     ,ROP_SRCCOPY
 687                     ,BBO_IGNORE
 688                    );
 689         ::GpiDestroyPS(hPSScreen);
 690         nOrigin += nHeight;
 691     }
 692     SetHBITMAP((WXHBITMAP)hBmp);
 693 #if wxUSE_PALETTE
 694     if (hOldPalette)
 695         ::GpiSelectPalette(hPS, hOldPalette);
 696 #endif // wxUSE_PALETTE
 697
 698     //
 699     // Similarly, created an mono-bitmap for the possible mask
 700     //
 701     if (rImage.HasMask())
 702     {
 703         vHeader.cbFix     =  sizeof(BITMAPINFOHEADER2);
 704         vHeader.cx        = nWidth;
 705         vHeader.cy        = nHeight;
 706         vHeader.cPlanes   = 1;
 707         vHeader.cBitCount = 1;
 708         hBmp = ::GpiCreateBitmap( hPS
 709                                  ,&vHeader
 710                                  ,0L
 711                                  ,NULL
 712                                  ,NULL
 713                                 );
 714         hBmpOld = ::GpiSetBitmap(hPS, hBmp);
 715         if (nNumDIB == 1)
 716             nHeight = nBmpHeight;
 717         else
 718             nHeight = nSizeLimit / nBytePerLine;
 719         vHeader.cy = (DWORD)(nHeight);
 720         vHeader.cbImage = nBytePerLine * nHeight;
 721         nOrigin = 0;
 722
 723         unsigned char               cRed   = rImage.GetMaskRed();
 724         unsigned char               cGreen = rImage.GetMaskGreen();
 725         unsigned char               cBlue  = rImage.GetMaskBlue();
 726         unsigned char               cZero = 0;
 727         unsigned char               cOne = 255;
 728
 729         ptdata = pData;
 730         for (n = 0; n < nNumDIB; n++)
 731         {
 732             if (nNumDIB > 1 && n == nNumDIB - 1 && nHRemain > 0)
 733             {
 734                 //
 735                 // Redefine height and size of the (possibly) last smaller DIB
 736                 // memory is not reallocated
 737                 //
 738                 nHeight         = nHRemain;
 739                 vHeader.cy      = (DWORD)(nHeight);
 740                 vHeader.cbImage = nBytePerLine * nHeight;
 741             }
 742             ptbits = pucBits;
 743             for (int j = 0; j < nHeight; j++)
 744             {
 745                 for (i = 0; i < nWidth; i++)
 746                 {
 747                     if ((*(ptdata++) != cRed) || (*(ptdata++) != cGreen) || (*(ptdata++) != cBlue))
 748                     {
 749                         *(ptbits++) = cOne;
 750                         *(ptbits++) = cOne;
 751                         *(ptbits++) = cOne;
 752                     }
 753                     else
 754                     {
 755                         *(ptbits++) = cZero;
 756                         *(ptbits++) = cZero;
 757                         *(ptbits++) = cZero;
 758                     }
 759                 }
 760                 for (i = 0; i < nPadding; i++)
 761                     *(ptbits++) = cZero;
 762             }
 763             lScans = ::GpiSetBitmapBits( hPS
 764                                         ,0              // Start at the bottom
 765                                         ,(LONG)nHeight // One line per scan
 766                                         ,(PBYTE)pucBits
 767                                         ,&vInfo
 768                                        );
 769             hPSScreen = ::GpiCreatePS( vHabmain
 770                                       ,hDCScreen
 771                                       ,&vSize
 772                                       ,PU_PELS | GPIA_ASSOC
 773                                      );
 774             POINTL vPoint2[4] = { 0, nOrigin,
 775                                   nWidth, nHeight,
 776                                   0, 0, nWidth, nHeight
 777                                 };
 778             ::GpiBitBlt( hPSScreen
 779                         ,hPS
 780                         ,4
 781                         ,vPoint2
 782                         ,ROP_SRCCOPY
 783                         ,BBO_IGNORE
 784                    );
 785             ::GpiDestroyPS(hPSScreen);
 786             nOrigin += nHeight;
 787         }
 788
 789         //
 790         // Create a wxMask object
 791         //
 792         wxMask*                     pMask = new wxMask();
 793
 794         pMask->SetMaskBitmap((WXHBITMAP)hBmp);
 795         SetMask(pMask);
 796         hBmpOld = ::GpiSetBitmap(hPS, hBmp);
 797     }
 798
 799     //
 800     // Free allocated resources
 801     //
 802     ::GpiSetBitmap(hPS, NULLHANDLE);
 803     ::GpiDestroyPS(hPS);
 804     ::DevCloseDC(hDC);
 805     free(pucBits);
 806     return TRUE;
 807 } // end of wxBitmap::CreateFromImage
 808
 809 wxImage wxBitmap::ConvertToImage() const
 810 {
 811     wxImage                         vImage;
 812
 813     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 814
 815     //
 816     // Create an wxImage object
 817     //
 818     int                             nWidth        = GetWidth();
 819     int                             nHeight       = GetHeight();
 820     int                             nDevWidth;
 821     int                             nDevHeight;
 822     int                             nBytePerLine  = nWidth * 3;
 823     int                             nSizeDWORD    = sizeof(DWORD);
 824     int                             nLineBoundary = nBytePerLine % nSizeDWORD;
 825     int                             nPadding = 0;
 826     unsigned char*                  pData;
 827     unsigned char*                  lpBits;
 828     long                            lScans;
 829     BITMAPINFOHEADER2               vDIBh;
 830     BITMAPINFO2                     vDIBInfo;
 831     HDC                             hDCMem;
 832     PSZ                             pszData[4] = { "Display", NULL, NULL, NULL };
 833     HPS                             hPSMem;
 834     HPS                             hPS;
 835     SIZEL                           vSizlPage = {0,0};
 836     HBITMAP                         hBitmap;
 837
 838     vImage.Create( nWidth
 839                   ,nHeight
 840                  );
 841     pData = vImage.GetData();
 842     if(!pData)
 843     {
 844         wxFAIL_MSG( wxT("could not allocate data for image") );
 845         return wxNullImage;
 846     }
 847     if(nLineBoundary > 0)
 848     {
 849         nPadding     = nSizeDWORD - nLineBoundary;
 850         nBytePerLine += nPadding;
 851     }
 852     wxDisplaySize( &nDevWidth
 853                   ,&nDevHeight
 854                  );
 855     //
 856     // Create and fill a DIB header
 857     //
 858     memset(&vDIBh, '\0', 16);
 859     vDIBh.cbFix     =  16;
 860     vDIBh.cx        = nWidth;
 861     vDIBh.cy        = nHeight;
 862     vDIBh.cPlanes   = 1;
 863     vDIBh.cBitCount = 24;
 864
 865     memset(&vDIBInfo, '\0', 16);
 866     vDIBInfo.cbFix           = 16;
 867     vDIBInfo.cx              = nWidth;
 868     vDIBInfo.cy              = nHeight;
 869     vDIBInfo.cPlanes         = 1;
 870     vDIBInfo.cBitCount       = 24;
 871
 872     lpBits = (unsigned char *)malloc(nBytePerLine * nHeight);
 873     if (!lpBits)
 874     {
 875         wxFAIL_MSG(wxT("could not allocate data for DIB"));
 876         free(pData);
 877         return wxNullImage;
 878     }
 879
 880     //
 881     // Copy data from the device-dependent bitmap to the DIB
 882     //
 883     hDCMem = ::DevOpenDC( vHabmain
 884                          ,OD_MEMORY
 885                          ,"*"
 886                          ,4
 887                          ,(PDEVOPENDATA)pszData
 888                          ,NULLHANDLE
 889                         );
 890     hPSMem = ::GpiCreatePS( vHabmain
 891                            ,hDCMem
 892                            ,&vSizlPage
 893                            ,PU_PELS | GPIA_ASSOC | GPIT_MICRO
 894                           );
 895     hBitmap = ::GpiCreateBitmap( hPSMem
 896                                 ,&vDIBh
 897                                 ,0L
 898                                 ,NULL
 899                                 ,NULL
 900                                );
 901     ::GpiSetBitmap(hPSMem, hBitmap);
 902     lScans = ::GpiQueryBitmapBits( hPSMem
 903                                   ,0L
 904                                   ,(LONG)nHeight
 905                                   ,(PBYTE)lpBits
 906                                   ,&vDIBInfo
 907                                  );
 908
 909     //
 910     // Copy DIB data into the wxImage object
 911     //
 912     int                             i;
 913     int                             j;
 914     unsigned char*                  ptdata = pData;
 915     unsigned char*                  ptbits = lpBits;
 916
 917     for (i = 0; i < nHeight; i++)
 918     {
 919         for (j = 0; j < nWidth; j++)
 920         {
 921             *(ptdata++) = *(ptbits+2);
 922             *(ptdata++) = *(ptbits+1);
 923             *(ptdata++) = *(ptbits  );
 924             ptbits += 3;
 925         }
 926         ptbits += nPadding;
 927     }
 928     ::GpiSetBitmap(hPSMem, NULLHANDLE);
 929
 930     //
 931     // Similarly, set data according to the possible mask bitmap
 932     //
 933     if (GetMask() && GetMask()->GetMaskBitmap())
 934     {
 935         hBitmap = (HBITMAP)GetMask()->GetMaskBitmap();
 936
 937         //
 938         // Memory DC/PS created, color set, data copied, and memory DC/PS deleted
 939         //
 940         HDC                         hMemDC = ::DevOpenDC( vHabmain
 941                                                          ,OD_MEMORY
 942                                                          ,"*"
 943                                                          ,4
 944                                                          ,(PDEVOPENDATA)pszData
 945                                                          ,NULLHANDLE
 946                                                         );
 947         HPS                         hMemPS = ::GpiCreatePS( vHabmain
 948                                                            ,hMemDC
 949                                                            ,&vSizlPage
 950                                                            ,PU_PELS | GPIA_ASSOC | GPIT_MICRO
 951                                                           );
 952         ::GpiSetColor(hMemPS, OS2RGB(0, 0, 0));
 953         ::GpiSetBackColor(hMemPS, OS2RGB(255, 255, 255) );
 954         ::GpiSetBitmap(hMemPS, hBitmap);
 955         ::GpiQueryBitmapBits( hPSMem
 956                              ,0L
 957                              ,(LONG)nHeight
 958                              ,(PBYTE)lpBits
 959                              ,&vDIBInfo
 960                             );
 961         ::GpiSetBitmap(hMemPS, NULLHANDLE);
 962         ::GpiDestroyPS(hMemPS);
 963         ::DevCloseDC(hMemDC);
 964
 965         //
 966         // Background color set to RGB(16,16,16) in consistent with wxGTK
 967         //
 968         unsigned char               ucRed = 16;
 969         unsigned char               ucGreen = 16;
 970         unsigned char               ucBlue = 16;
 971
 972         ptdata = pData;
 973         ptbits = lpBits;
 974         for (i = 0; i < nHeight; i++)
 975         {
 976             for (j = 0; j < nWidth; j++)
 977             {
 978                 if (*ptbits != 0)
 979                     ptdata += 3;
 980                 else
 981                 {
 982                     *(ptdata++)  = ucRed;
 983                     *(ptdata++)  = ucGreen;
 984                     *(ptdata++)  = ucBlue;
 985                 }
 986                 ptbits += 3;
 987             }
 988             ptbits += nPadding;
 989         }
 990         vImage.SetMaskColour( ucRed
 991                              ,ucGreen
 992                              ,ucBlue
 993                             );
 994         vImage.SetMask(TRUE);
 995     }
 996     else
 997     {
 998         vImage.SetMask(FALSE);
 999     }
1000
1001     //
1002     // Free allocated resources
1003     //
1004     ::GpiDestroyPS(hPSMem);
1005     ::DevCloseDC(hDCMem);
1006     free(lpBits);
1007     return vImage;
1008 } // end of wxBitmap::ConvertToImage
1009
1010 // ----------------------------------------------------------------------------
1011 // sub bitmap extraction
1012 // ----------------------------------------------------------------------------
1013
1014 wxBitmap wxBitmap::GetSubBitmap(
1015   const wxRect&                     rRect
1016 ) const
1017 {
1018     wxCHECK_MSG( Ok() &&
1019                  (rRect.x >= 0) && (rRect.y >= 0) &&
1020                  (rRect.x + rRect.width <= GetWidth()) &&
1021                  (rRect.y + rRect.height <= GetHeight()),
1022                  wxNullBitmap, wxT("Invalid bitmap or bitmap region") );
1023
1024     wxBitmap                        vRet( rRect.width
1025                                          ,rRect.height
1026                                          ,GetDepth()
1027                                         );
1028     wxASSERT_MSG( vRet.Ok(), wxT("GetSubBitmap error") );
1029
1030
1031     //
1032     // Copy bitmap data
1033     //
1034     SIZEL                           vSize = {0, 0};
1035     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1036     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1037     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1038     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1039     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1040     POINTL                          vPoint[4] = { 0, 0, rRect.width, rRect.height,
1041                                                   rRect.x, rRect.y,
1042                                                   rRect.x + rRect.width, rRect.y + rRect.height
1043                                                 };
1044
1045     ::GpiSetBitmap(hPSSrc, (HBITMAP) GetHBITMAP());
1046     ::GpiSetBitmap(hPSDst, (HBITMAP) vRet.GetHBITMAP());
1047     ::GpiBitBlt( hPSDst
1048                 ,hPSSrc
1049                 ,4L
1050                 ,vPoint
1051                 ,ROP_SRCCOPY
1052                 ,BBO_IGNORE
1053                );
1054
1055     //
1056     // Copy mask if there is one
1057     //
1058     if (GetMask())
1059     {
1060         BITMAPINFOHEADER2           vBmih;
1061
1062         memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1063         vBmih.cbFix     = sizeof(BITMAPINFOHEADER2);
1064         vBmih.cx        = rRect.width;
1065         vBmih.cy        = rRect.height;
1066         vBmih.cPlanes   = 1;
1067         vBmih.cBitCount = 1;
1068
1069         HBITMAP                     hBmpMask = ::GpiCreateBitmap( hPSDst
1070                                                                  ,&vBmih
1071                                                                  ,0L
1072                                                                  ,NULL
1073                                                                  ,NULL
1074                                                                 );
1075
1076         ::GpiSetBitmap(hPSSrc, (HBITMAP) GetHBITMAP());
1077         ::GpiSetBitmap(hPSDst, (HBITMAP) vRet.GetHBITMAP());
1078
1079         ::GpiSetBitmap(hPSSrc, (HBITMAP) GetMask()->GetMaskBitmap());
1080         ::GpiSetBitmap(hPSDst, (HBITMAP) hBmpMask);
1081         ::GpiBitBlt( hPSDst
1082                     ,hPSSrc
1083                     ,4L
1084                     ,vPoint
1085                     ,ROP_SRCCOPY
1086                     ,BBO_IGNORE
1087                    );
1088
1089         wxMask*                     pMask = new wxMask((WXHBITMAP)hBmpMask);
1090         vRet.SetMask(pMask);
1091     }
1092
1093     ::GpiSetBitmap(hPSSrc, NULL);
1094     ::GpiSetBitmap(hPSDst, NULL);
1095     ::GpiDestroyPS(hPSSrc);
1096     ::GpiDestroyPS(hPSDst);
1097     ::DevCloseDC(hDCSrc);
1098     ::DevCloseDC(hDCDst);
1099     return vRet;
1100 } // end of wxBitmap::GetSubBitmap
1101
1102 // ----------------------------------------------------------------------------
1103 // wxBitmap accessors
1104 // ----------------------------------------------------------------------------
1105
1106 void wxBitmap::SetQuality(
1107   int                               nQ
1108 )
1109 {
1110     EnsureHasData();
1111
1112     GetBitmapData()->m_nQuality = nQ;
1113 } // end of wxBitmap::SetQuality
1114
1115 #if WXWIN_COMPATIBILITY_2
1116 void wxBitmap::SetOk(
1117   bool                              bOk
1118 )
1119 {
1120     EnsureHasData();
1121
1122     GetBitmapData()->m_bOk = bOk;
1123 } // end of wxBitmap::SetOk
1124 #endif // WXWIN_COMPATIBILITY_2
1125
1126 void wxBitmap::SetPalette(
1127   const wxPalette&                  rPalette
1128 )
1129 {
1130     EnsureHasData();
1131
1132     GetBitmapData()->m_vBitmapPalette = rPalette;
1133 } // end of wxBitmap::SetPalette
1134
1135 void wxBitmap::SetMask(
1136   wxMask*                           pMask
1137 )
1138 {
1139     EnsureHasData();
1140
1141     GetBitmapData()->m_pBitmapMask = pMask;
1142 } // end of wxBitmap::SetMask
1143
1144 wxBitmap wxBitmap::GetBitmapForDC(
1145   wxDC&                             rDc
1146 ) const
1147 {
1148     return(*this);
1149 } // end of wxBitmap::GetBitmapForDC
1150
1151 // ----------------------------------------------------------------------------
1152 // wxMask
1153 // ----------------------------------------------------------------------------
1154
1155 wxMask::wxMask()
1156 {
1157     m_hMaskBitmap = 0;
1158 } // end of wxMask::wxMask
1159
1160 // Construct a mask from a bitmap and a colour indicating
1161 // the transparent area
1162 wxMask::wxMask(
1163   const wxBitmap&                   rBitmap
1164 , const wxColour&                   rColour
1165 )
1166 {
1167     m_hMaskBitmap = 0;
1168     Create( rBitmap
1169            ,rColour
1170           );
1171 } // end of wxMask::wxMask
1172
1173 // Construct a mask from a bitmap and a palette index indicating
1174 // the transparent area
1175 wxMask::wxMask(
1176   const wxBitmap&                   rBitmap
1177 , int                               nPaletteIndex
1178 )
1179 {
1180     m_hMaskBitmap = 0;
1181     Create( rBitmap
1182            ,nPaletteIndex
1183           );
1184 } // end of wxMask::wxMask
1185
1186 // Construct a mask from a mono bitmap (copies the bitmap).
1187 wxMask::wxMask(
1188   const wxBitmap&                   rBitmap
1189 )
1190 {
1191     m_hMaskBitmap = 0;
1192     Create(rBitmap);
1193 } // end of wxMask::wxMask
1194
1195 wxMask::~wxMask()
1196 {
1197     if (m_hMaskBitmap)
1198         ::GpiDeleteBitmap((HBITMAP)m_hMaskBitmap);
1199 } // end of wxMask::~wxMask
1200
1201 // Create a mask from a mono bitmap (copies the bitmap).
1202 bool wxMask::Create(
1203   const wxBitmap&                   rBitmap
1204 )
1205 {
1206     BITMAPINFOHEADER2               vBmih;
1207     SIZEL                           vSize = {0, 0};
1208     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1209     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1210     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1211     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1212     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1213     POINTL                          vPoint[4] = { 0 ,0, rBitmap.GetWidth(), rBitmap.GetHeight(),
1214                                                   0, 0, rBitmap.GetWidth(), rBitmap.GetHeight()
1215                                                 };
1216
1217     if (m_hMaskBitmap)
1218     {
1219         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1220         m_hMaskBitmap = 0;
1221     }
1222     if (!rBitmap.Ok() || rBitmap.GetDepth() != 1)
1223     {
1224         return(FALSE);
1225     }
1226
1227     memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1228     vBmih.cbFix     =  sizeof(BITMAPINFOHEADER2);
1229     vBmih.cx        = rBitmap.GetWidth();
1230     vBmih.cy        = rBitmap.GetHeight();
1231     vBmih.cPlanes   = 1;
1232     vBmih.cBitCount = 1;
1233
1234     m_hMaskBitmap = ::GpiCreateBitmap( hPSDst
1235                                       ,&vBmih
1236                                       ,0L
1237                                       ,NULL
1238                                       ,NULL
1239                                      );
1240
1241     ::GpiSetBitmap(hPSSrc, (HBITMAP) rBitmap.GetHBITMAP());
1242     ::GpiSetBitmap(hPSDst, (HBITMAP) m_hMaskBitmap);
1243     ::GpiBitBlt( hPSDst
1244                 ,hPSSrc
1245                 ,4L
1246                 ,vPoint
1247                 ,ROP_SRCCOPY
1248                 ,BBO_IGNORE
1249                );
1250
1251     ::GpiDestroyPS(hPSSrc);
1252     ::GpiDestroyPS(hPSDst);
1253     ::DevCloseDC(hDCSrc);
1254     ::DevCloseDC(hDCDst);
1255     return(TRUE);
1256 } // end of wxMask::Create
1257
1258 // Create a mask from a bitmap and a palette index indicating
1259 // the transparent area
1260 bool wxMask::Create(
1261   const wxBitmap&                   rBitmap
1262 , int                               nPaletteIndex
1263 )
1264 {
1265     if (m_hMaskBitmap)
1266     {
1267         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1268         m_hMaskBitmap = 0;
1269     }
1270     if (rBitmap.Ok() && rBitmap.GetPalette()->Ok())
1271     {
1272         unsigned char               cRed;
1273         unsigned char               cGreen;
1274         unsigned char               cBlue;
1275
1276         if (rBitmap.GetPalette()->GetRGB( nPaletteIndex
1277                                          ,&cRed
1278                                          ,&cGreen
1279                                          ,&cBlue
1280                                         ))
1281         {
1282             wxColour                vTransparentColour( cRed
1283                                                        ,cGreen
1284                                                        ,cBlue
1285                                                       );
1286
1287             return (Create( rBitmap
1288                            ,vTransparentColour
1289                           ));
1290         }
1291     }
1292     return(FALSE);
1293 } // end of wxMask::Create
1294
1295 // Create a mask from a bitmap and a colour indicating
1296 // the transparent area
1297 bool wxMask::Create(
1298   const wxBitmap&                   rBitmap
1299 , const wxColour&                   rColour
1300 )
1301 {
1302     bool                            bOk = TRUE;
1303     COLORREF                        vMaskColour = OS2RGB( rColour.Red()
1304                                                          ,rColour.Green()
1305                                                          ,rColour.Blue()
1306                                                         );
1307     BITMAPINFOHEADER2               vBmih;
1308     SIZEL                           vSize = {0, 0};
1309     DEVOPENSTRUC                    vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
1310     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1311     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1312     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1313     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1314     POINTL                          vPoint[4] = { 0 ,0, rBitmap.GetWidth(), rBitmap.GetHeight(),
1315                                                   0, 0, rBitmap.GetWidth(), rBitmap.GetHeight()
1316                                                 };
1317
1318     if (m_hMaskBitmap)
1319     {
1320         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1321         m_hMaskBitmap = 0;
1322     }
1323     if (!rBitmap.Ok())
1324     {
1325         return(FALSE);
1326     }
1327
1328     //
1329     // Scan the bitmap for the transparent colour and set
1330     // the corresponding pixels in the mask to BLACK and
1331     // the rest to WHITE
1332     //
1333
1334     memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1335     vBmih.cbFix     =  sizeof(BITMAPINFOHEADER2);
1336     vBmih.cx        = rBitmap.GetWidth();
1337     vBmih.cy        = rBitmap.GetHeight();
1338     vBmih.cPlanes   = 1;
1339     vBmih.cBitCount = 1;
1340
1341     m_hMaskBitmap = ::GpiCreateBitmap( hPSDst
1342                                       ,&vBmih
1343                                       ,0L
1344                                       ,NULL
1345                                       ,NULL
1346                                      );
1347
1348     ::GpiSetBitmap(hPSSrc, (HBITMAP) rBitmap.GetHBITMAP());
1349     ::GpiSetBitmap(hPSDst, (HBITMAP) m_hMaskBitmap);
1350
1351     //
1352     // This is not very efficient, but I can't think
1353     // of a better way of doing it
1354     //
1355     for (int w = 0; w < rBitmap.GetWidth(); w++)
1356     {
1357         for (int h = 0; h < rBitmap.GetHeight(); h++)
1358         {
1359             POINTL                  vPt = {w, h};
1360             COLORREF                vCol = (COLORREF)::GpiQueryPel(hPSSrc, &vPt);
1361             if (vCol == (COLORREF)CLR_NOINDEX)
1362             {
1363                 //
1364                 // Doesn't make sense to continue
1365                 //
1366                 bOk = FALSE;
1367                 break;
1368             }
1369
1370             if (vCol == vMaskColour)
1371             {
1372                 ::GpiSetColor(hPSDst, OS2RGB(0, 0, 0));
1373                 ::GpiSetPel(hPSDst, &vPt);
1374             }
1375             else
1376             {
1377                 ::GpiSetColor(hPSDst, OS2RGB(255, 255, 255));
1378                 ::GpiSetPel(hPSDst, &vPt);
1379             }
1380         }
1381     }
1382     ::GpiSetBitmap(hPSSrc, NULL);
1383     ::GpiSetBitmap(hPSDst, NULL);
1384     ::GpiDestroyPS(hPSSrc);
1385     ::GpiDestroyPS(hPSDst);
1386     ::DevCloseDC(hDCSrc);
1387     ::DevCloseDC(hDCDst);
1388     return(TRUE);
1389 } // end of wxMask::Create
1390
1391 // ----------------------------------------------------------------------------
1392 // wxBitmapHandler
1393 // ----------------------------------------------------------------------------
1394
1395 bool wxBitmapHandler::Create(
1396   wxGDIImage*                       pImage
1397 , void*                             pData
1398 , long                              lFlags
1399 , int                               nWidth
1400 , int                               nHeight
1401 , int                               nDepth
1402 )
1403 {
1404     wxBitmap*                       pBitmap = wxDynamicCast( pImage
1405                                                             ,wxBitmap
1406                                                            );
1407
1408     return(pBitmap ? Create( pBitmap
1409                             ,pData
1410                             ,nWidth
1411                             ,nHeight
1412                             ,nDepth
1413                            ) : FALSE);
1414 }
1415
1416 bool wxBitmapHandler::Load(
1417   wxGDIImage*                       pImage
1418 , const wxString&                   rName
1419 , HPS                               hPs
1420 , long                              lFlags
1421 , int                               nWidth
1422 , int                               nHeight
1423 )
1424 {
1425     wxBitmap*                       pBitmap = wxDynamicCast( pImage
1426                                                             ,wxBitmap
1427                                                            );
1428
1429     return(pBitmap ? LoadFile( pBitmap
1430                               ,rName
1431                               ,hPs
1432                               ,lFlags
1433                               ,nWidth
1434                               ,nHeight
1435                              ) : FALSE);
1436 }
1437
1438 bool wxBitmapHandler::Save(
1439   wxGDIImage*                       pImage
1440 , const wxString&                   rName
1441 , int                               lType
1442 )
1443 {
1444     wxBitmap*                       pBitmap = wxDynamicCast( pImage
1445                                                             ,wxBitmap
1446                                                            );
1447
1448     return(pBitmap ? SaveFile( pBitmap
1449                               ,rName
1450                               ,lType
1451                              ) : FALSE);
1452 }
1453
1454 bool wxBitmapHandler::Create(
1455   wxBitmap*                         WXUNUSED(pBitmap)
1456 , void*                             WXUNUSED(pData)
1457 , long                              WXUNUSED(lType)
1458 , int                               WXUNUSED(nWidth)
1459 , int                               WXUNUSED(nHeight)
1460 , int                               WXUNUSED(nDepth)
1461 )
1462 {
1463     return(FALSE);
1464 }
1465
1466 bool wxBitmapHandler::LoadFile(
1467   wxBitmap*                         WXUNUSED(pBitmap)
1468 , const wxString&                   WXUNUSED(rName)
1469 , HPS                               WXUNUSED(hPs)
1470 , long                              WXUNUSED(lType)
1471 , int                               WXUNUSED(nDesiredWidth)
1472 , int                               WXUNUSED(nDesiredHeight)
1473 )
1474 {
1475     return(FALSE);
1476 }
1477
1478 bool wxBitmapHandler::SaveFile(
1479   wxBitmap*                         WXUNUSED(pBitmap)
1480 , const wxString&                   WXUNUSED(rName)
1481 , int                               WXUNUSED(nType)
1482 , const wxPalette*                  WXUNUSED(pPalette)
1483 )
1484 {
1485     return(FALSE);
1486 }
1487
1488 // ----------------------------------------------------------------------------
1489 // Utility functions
1490 // ----------------------------------------------------------------------------
1491 HBITMAP wxInvertMask(
1492   HBITMAP                           hBmpMask
1493 , int                               nWidth
1494 , int                               nHeight
1495 )
1496 {
1497     HBITMAP                         hBmpInvMask = 0;
1498
1499     wxCHECK_MSG( hBmpMask, 0, _T("invalid bitmap in wxInvertMask") );
1500
1501     //
1502     // Get width/height from the bitmap if not given
1503     //
1504     if (!nWidth || !nHeight)
1505     {
1506         BITMAPINFOHEADER2           vBmhdr;
1507
1508         ::GpiQueryBitmapInfoHeader( hBmpMask
1509                                    ,&vBmhdr
1510                                   );
1511         nWidth  = (int)vBmhdr.cx;
1512         nHeight = (int)vBmhdr.cy;
1513     }
1514
1515     BITMAPINFOHEADER2               vBmih;
1516     SIZEL                           vSize = {0, 0};
1517     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1518     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1519     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1520     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1521     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1522     POINTL                          vPoint[4] = { 0 ,0, nWidth, nHeight,
1523                                                   0, 0, nWidth, nHeight
1524                                                 };
1525
1526     memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1527     vBmih.cbFix     =  sizeof(BITMAPINFOHEADER2);
1528     vBmih.cx        = nWidth;
1529     vBmih.cy        = nHeight;
1530     vBmih.cPlanes   = 1;
1531     vBmih.cBitCount = 1;
1532
1533     hBmpInvMask = ::GpiCreateBitmap( hPSDst
1534                                     ,&vBmih
1535                                     ,0L
1536                                     ,NULL
1537                                     ,NULL
1538                                    );
1539
1540     ::GpiSetBitmap(hPSSrc, (HBITMAP) hBmpMask);
1541     ::GpiSetBitmap(hPSDst, (HBITMAP) hBmpInvMask);
1542
1543     ::GpiBitBlt( hPSDst
1544                 ,hPSSrc
1545                 ,4L
1546                 ,vPoint
1547                 ,ROP_SRCINVERT
1548                 ,BBO_IGNORE
1549                );
1550
1551     ::GpiDestroyPS(hPSSrc);
1552     ::GpiDestroyPS(hPSDst);
1553     ::DevCloseDC(hDCSrc);
1554     ::DevCloseDC(hDCDst);
1555
1556     return hBmpInvMask;
1557 } // end of WxWinGdi_InvertMask
1558