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     wxASSERT_MSG( !m_pSelectedInto,
  67                   wxT("deleting bitmap still selected into wxMemoryDC") );
  68
  69     if (m_hBitmap)
  70     {
  71         if (!::GpiDeleteBitmap((HBITMAP)m_hBitmap))
  72         {
  73             wxLogLastError("GpiDeleteBitmap(hbitmap)");
  74         }
  75     }
  76
  77     delete m_pBitmapMask;
  78     m_pBitmapMask = NULL;
  79 } // end of wxBitmapRefData::Free
  80
  81 // ----------------------------------------------------------------------------
  82 // wxBitmap creation
  83 // ----------------------------------------------------------------------------
  84
  85 // this function should be called from all wxBitmap ctors
  86 void wxBitmap::Init()
  87 {
  88 } // end of wxBitmap::Init
  89
  90 bool wxBitmap::CopyFromIconOrCursor(
  91   const wxGDIImage&                 rIcon
  92 )
  93 {
  94     HPOINTER                        hIcon = (HPOINTER)rIcon.GetHandle();
  95     POINTERINFO                     SIconInfo;
  96
  97     if (!::WinQueryPointerInfo(hIcon, &SIconInfo))
  98     {
  99         wxLogLastError(wxT("WinQueryPointerInfo"));
 100         return FALSE;
 101     }
 102     wxBitmapRefData*                pRefData = new wxBitmapRefData;
 103
 104     m_refData = pRefData;
 105
 106     int                             nWidth = rIcon.GetWidth();
 107     int                             nHeight = rIcon.GetHeight();
 108
 109     pRefData->m_nWidth  = nWidth;
 110     pRefData->m_nHeight = nHeight;
 111     pRefData->m_nDepth  = wxDisplayDepth();
 112
 113     pRefData->m_hBitmap = (WXHBITMAP)SIconInfo.hbmColor;
 114
 115     //
 116     // No mask in the Info struct in OS/2
 117     //
 118     return(TRUE);
 119 } // end of wxBitmap::CopyFromIconOrCursor
 120
 121 bool wxBitmap::CopyFromCursor(
 122   const wxCursor&                   rCursor
 123 )
 124 {
 125     UnRef();
 126
 127     if (!rCursor.Ok())
 128         return(FALSE);
 129     return(CopyFromIconOrCursor(rCursor));
 130 } // end of wxBitmap::CopyFromCursor
 131
 132 bool wxBitmap::CopyFromIcon(
 133   const wxIcon&                     rIcon
 134 )
 135 {
 136     UnRef();
 137
 138     if (!rIcon.Ok())
 139         return(FALSE);
 140
 141     return CopyFromIconOrCursor(rIcon);
 142 } // end of wxBitmap::CopyFromIcon
 143
 144 wxBitmap::~wxBitmap()
 145 {
 146 } // end of wxBitmap::~wxBitmap
 147
 148 wxBitmap::wxBitmap(
 149   const char                        zBits[]
 150 , int                               nWidth
 151 , int                               nHeight
 152 , int                               nDepth
 153 )
 154 {
 155     Init();
 156
 157     wxBitmapRefData*                pRefData = new wxBitmapRefData;
 158     BITMAPINFOHEADER2               vHeader;
 159     BITMAPINFO2                     vInfo;
 160     HDC                             hDc;
 161     HPS                             hPs;
 162     DEVOPENSTRUC                    vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
 163     SIZEL                           vSize = {0, 0};
 164     char*                           pzData;
 165
 166     wxASSERT(vHabmain != NULL);
 167
 168     m_refData = pRefData;
 169
 170     pRefData->m_nWidth        = nWidth;
 171     pRefData->m_nHeight       = nHeight;
 172     pRefData->m_nDepth        = nDepth;
 173     pRefData->m_nNumColors    = 0;
 174     pRefData->m_pSelectedInto = NULL;
 175
 176     hDc = ::DevOpenDC(vHabmain, OD_MEMORY, (PSZ)"*", 1L, (PDEVOPENDATA)&vDop, 0L);
 177     hPs = ::GpiCreatePS(vHabmain, hDc, &vSize, GPIA_ASSOC | PU_PELS);
 178     if (hPs == 0)
 179     {
 180         wxLogLastError("GpiCreatePS Failure");
 181     }
 182
 183     if (nDepth == 1)
 184     {
 185         //
 186         // We assume that it is in XBM format which is not quite the same as
 187         // the format CreateBitmap() wants because the order of bytes in the
 188         // line is inversed!
 189         //
 190         const size_t                nBytesPerLine = (nWidth + 7) / 8;
 191         const size_t                nPadding = nBytesPerLine % 2;
 192         const size_t                nLen = nHeight * (nPadding + nBytesPerLine);
 193         const char*                 pzSrc = zBits;
 194         int                         nRows;
 195         size_t                      nCols;
 196
 197         pzData = (char *)malloc(nLen);
 198
 199         char*                       pzDst = pzData;
 200
 201         for (nRows = 0; nRows < nHeight; nRows++)
 202         {
 203             for (nCols = 0; nCols < nBytesPerLine; nCols++)
 204             {
 205                 unsigned char       ucVal = *pzSrc++;
 206                 unsigned char       ucReversed = 0;
 207                 int                 nBits;
 208
 209                 for (nBits = 0; nBits < 8; nBits++)
 210                 {
 211                     ucReversed <<= 1;
 212                     ucReversed |= (ucVal & 0x01);
 213                     ucVal >>= 1;
 214                 }
 215                 *pzDst++ = ucReversed;
 216             }
 217             if (nPadding)
 218                 *pzDst++ = 0;
 219         }
 220     }
 221     else
 222     {
 223         //
 224         // Bits should already be in Windows standard format
 225         //
 226         pzData = (char *)zBits;    // const_cast is harmless
 227     }
 228
 229     memset(&vHeader, '\0', sizeof(BITMAPINFOHEADER2));
 230     vHeader.cbFix           = sizeof(vHeader);
 231     vHeader.cx              = (USHORT)nWidth;
 232     vHeader.cy              = (USHORT)nHeight;
 233     vHeader.cPlanes         = 1L;
 234     vHeader.cBitCount       = nDepth;
 235     vHeader.usReserved      = 0;
 236     vHeader.ulCompression   = BCA_UNCOMP;
 237     vHeader.usRecording     = BRA_BOTTOMUP;
 238     vHeader.usRendering     = BRH_NOTHALFTONED;
 239     vHeader.ulColorEncoding = BCE_RGB;
 240     vHeader.ulIdentifier    = 0;
 241
 242     memset(&vInfo, '\0', sizeof(BITMAPINFO2));
 243     vInfo.cbFix           = sizeof(vInfo);
 244     vInfo.cx              = (USHORT)nWidth;
 245     vInfo.cy              = (USHORT)nHeight;
 246     vInfo.cPlanes         = 1L;
 247     vInfo.cBitCount       = nDepth;
 248     vInfo.usReserved      = 0;
 249     vInfo.ulCompression   = BCA_UNCOMP;
 250     vInfo.usRecording     = BRA_BOTTOMUP;
 251     vInfo.usRendering     = BRH_NOTHALFTONED;
 252     vInfo.ulColorEncoding = BCE_RGB;
 253     vInfo.ulIdentifier    = 0;
 254
 255     HBITMAP                         hBmp = ::GpiCreateBitmap(hPs, &vHeader, CBM_INIT, (PBYTE)pzData, &vInfo);
 256
 257     if (!hBmp)
 258     {
 259         wxLogLastError("CreateBitmap");
 260     }
 261     ::WinReleasePS(hPs);
 262     SetHBITMAP((WXHBITMAP)hBmp);
 263 } // end of wxBitmap::wxBitmap
 264
 265 wxBitmap::wxBitmap(
 266   int                               nW
 267 , int                               nH
 268 , int                               nD
 269 )
 270 {
 271     Init();
 272
 273     (void)Create( nW
 274                  ,nH
 275                  ,nD
 276                 );
 277 } // end of wxBitmap::wxBitmap
 278
 279 wxBitmap::wxBitmap(
 280   void*                             pData
 281 , long                              lType
 282 , int                               nWidth
 283 , int                               nHeight
 284 , int                               nDepth
 285 )
 286 {
 287     Init();
 288
 289     (void)Create( pData
 290                  ,lType
 291                  ,nWidth
 292                  ,nHeight
 293                  ,nDepth
 294                 );
 295 } // end of wxBitmap::wxBitmap
 296
 297 wxBitmap::wxBitmap(
 298   const wxString&                   rFilename
 299 , long                              lType
 300 )
 301 {
 302     Init();
 303
 304     LoadFile( rFilename
 305              ,(int)lType
 306             );
 307 } // end of wxBitmap::wxBitmap
 308
 309 bool wxBitmap::Create(
 310   int                               nW
 311 , int                               nH
 312 , int                               nD
 313 )
 314 {
 315     HBITMAP                         hBmp;
 316     BITMAPINFOHEADER2               vHeader;
 317
 318     wxASSERT(vHabmain != NULL);
 319     UnRef();
 320     m_refData = new wxBitmapRefData;
 321     GetBitmapData()->m_nWidth = nW;
 322     GetBitmapData()->m_nHeight = nH;
 323     GetBitmapData()->m_nDepth = nD;
 324
 325     if (nD > 0)
 326     {
 327         DEVOPENSTRUC                vDop  = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
 328         SIZEL                       vSize = {0, 0};
 329         HDC                         hDC   = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
 330         HPS                         hPS   = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
 331
 332         memset(&vHeader, '\0', sizeof(BITMAPINFOHEADER2));
 333         vHeader.cbFix     =  sizeof(BITMAPINFOHEADER2);
 334         vHeader.cx        = nW;
 335         vHeader.cy        = nH;
 336         vHeader.cPlanes   = 1;
 337         vHeader.cBitCount = nD;
 338
 339         hBmp = ::GpiCreateBitmap( hPS
 340                                  ,&vHeader
 341                                  ,0L
 342                                  ,NULL
 343                                  ,NULL
 344                                 );
 345         ::GpiDestroyPS(hPS);
 346         ::DevCloseDC(hDC);
 347     }
 348     else
 349     {
 350         HPS                             hPSScreen;
 351         HDC                             hDCScreen;
 352         LONG                            lBitCount;
 353
 354         hPSScreen = ::WinGetScreenPS(HWND_DESKTOP);
 355         hDCScreen = ::GpiQueryDevice(hPSScreen);
 356         ::DevQueryCaps(hDCScreen, CAPS_COLOR_BITCOUNT, 1L, &lBitCount);
 357
 358         memset(&vHeader, '\0', sizeof(BITMAPINFOHEADER2));
 359         vHeader.cbFix     =  sizeof(BITMAPINFOHEADER2);
 360         vHeader.cx        = nW;
 361         vHeader.cy        = nH;
 362         vHeader.cPlanes   = 1;
 363         vHeader.cBitCount = lBitCount;
 364
 365         hBmp = ::GpiCreateBitmap( hPSScreen
 366                                  ,&vHeader
 367                                  ,0L
 368                                  ,NULL
 369                                  ,NULL
 370                                 );
 371
 372         GetBitmapData()->m_nDepth = wxDisplayDepth();
 373         ::WinReleasePS(hPSScreen);
 374     }
 375     SetHBITMAP((WXHBITMAP)hBmp);
 376
 377 #if WXWIN_COMPATIBILITY_2
 378     GetBitmapData()->m_bOk = hBmp != 0;
 379 #endif // WXWIN_COMPATIBILITY_2
 380
 381     return Ok();
 382 } // end of wxBitmap::Create
 383
 384 bool wxBitmap::CreateFromXpm(
 385   const char**                      ppData
 386 )
 387 {
 388 #if wxUSE_IMAGE && wxUSE_XPM
 389     Init();
 390
 391     wxCHECK_MSG(ppData != NULL, FALSE, wxT("invalid bitmap data"))
 392
 393     wxXPMDecoder                    vDecoder;
 394     wxImage                         vImg = vDecoder.ReadData(ppData);
 395
 396     wxCHECK_MSG(vImg.Ok(), FALSE, wxT("invalid bitmap data"))
 397
 398     *this = wxBitmap(vImg);
 399     return TRUE;
 400 #else
 401     return FALSE;
 402 #endif
 403 } // end of wxBitmap::CreateFromXpm
 404
 405 bool wxBitmap::LoadFile(
 406   const wxString&                   rFilename
 407 , long                              lType
 408 )
 409 {
 410     HPS                             hPs = NULLHANDLE;
 411
 412     UnRef();
 413
 414     wxBitmapHandler*                pHandler = wxDynamicCast( FindHandler(lType)
 415                                                              ,wxBitmapHandler
 416                                                             );
 417
 418     if (pHandler)
 419     {
 420         m_refData = new wxBitmapRefData;
 421
 422         return(pHandler->LoadFile( this
 423                                   ,rFilename
 424                                   ,hPs
 425                                   ,lType
 426                                   , -1
 427                                   , -1
 428                                  ));
 429     }
 430     else
 431     {
 432         wxImage                     vImage;
 433
 434         if (!vImage.LoadFile(rFilename, lType) || !vImage.Ok() )
 435             return(FALSE);
 436
 437         *this = wxBitmap(vImage);
 438
 439         return(TRUE);
 440     }
 441 } // end of wxBitmap::LoadFile
 442
 443 bool wxBitmap::Create(
 444   void*                             pData
 445 , long                              lType
 446 , int                               nWidth
 447 , int                               nHeight
 448 , int                               nDepth
 449 )
 450 {
 451     UnRef();
 452
 453     wxBitmapHandler*                pHandler = wxDynamicCast( FindHandler(lType)
 454                                                              ,wxBitmapHandler
 455                                                             );
 456
 457     if (!pHandler)
 458     {
 459         wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for "
 460                        "type %d defined."), lType);
 461
 462         return(FALSE);
 463     }
 464
 465     m_refData = new wxBitmapRefData;
 466
 467     return(pHandler->Create( this
 468                             ,pData
 469                             ,lType
 470                             ,nWidth
 471                             ,nHeight
 472                             ,nDepth
 473                            ));
 474 } // end of wxBitmap::Create
 475
 476 bool wxBitmap::SaveFile(
 477   const wxString&                   rFilename
 478 , int                               lType
 479 , const wxPalette*                  pPalette
 480 )
 481 {
 482     wxBitmapHandler*                pHandler = wxDynamicCast( FindHandler(lType)
 483                                                              ,wxBitmapHandler
 484                                                             );
 485
 486     if (pHandler)
 487     {
 488         return pHandler->SaveFile( this
 489                                   ,rFilename
 490                                   ,lType
 491                                   ,pPalette
 492                                  );
 493     }
 494     else
 495     {
 496         // FIXME what about palette? shouldn't we use it?
 497         wxImage                     vImage = ConvertToImage();
 498
 499         if (!vImage.Ok())
 500             return(FALSE);
 501
 502         return(vImage.SaveFile( rFilename
 503                                ,lType
 504                               ));
 505     }
 506 } // end of wxBitmap::SaveFile
 507
 508
 509 // ----------------------------------------------------------------------------
 510 // wxImage-wxBitmap convertion
 511 // ----------------------------------------------------------------------------
 512
 513 bool wxBitmap::CreateFromImage (
 514   const wxImage&                    rImage
 515 , int                               nDepth
 516 )
 517 {
 518     wxCHECK_MSG(rImage.Ok(), FALSE, wxT("invalid image"));
 519
 520     int                             nSizeLimit = 1024 * 768 * 3;
 521     int                             nWidth = GetWidth();
 522     int                             nBmpHeight = GetHeight();
 523     int                             nBytePerLine = nWidth * 3;
 524     int                             nSizeDWORD = sizeof(DWORD);
 525     int                             nLineBoundary = nBytePerLine % nSizeDWORD;
 526     int                             nPadding = 0;
 527
 528     if (nLineBoundary > 0)
 529     {
 530         nPadding = nSizeDWORD - nLineBoundary;
 531         nBytePerLine += nPadding;
 532     }
 533
 534     //
 535     // Calc the number of DIBs and heights of DIBs
 536     //
 537     int                             nNumDIB = 1;
 538     int                             nHRemain = 0;
 539     int                             nHeight = nSizeLimit / nBytePerLine;
 540
 541     if (nHeight >= nBmpHeight)
 542         nHeight = nBmpHeight;
 543     else
 544     {
 545         nNumDIB  = nBmpHeight / nHeight;
 546         nHRemain = nBmpHeight % nHeight;
 547         if (nHRemain > 0)
 548             nNumDIB++;
 549     }
 550
 551     //
 552     // Set bitmap parameters
 553     //
 554     wxCHECK_MSG(rImage.Ok(), FALSE, wxT("invalid image"));
 555     SetWidth(nWidth);
 556     SetHeight(nBmpHeight);
 557     if (nDepth == -1)
 558         nDepth = wxDisplayDepth();
 559     SetDepth(nDepth);
 560
 561 #if wxUSE_PALETTE
 562     //
 563     // Copy the palette from the source image
 564     //
 565     SetPalette(rImage.GetPalette());
 566 #endif // wxUSE_PALETTE
 567
 568     //
 569     // Create a DIB header
 570     //
 571     BITMAPINFOHEADER2               vHeader;
 572
 573     //
 574     // Fill in the DIB header
 575     //
 576     memset(&vHeader, '\0', sizeof(BITMAPINFOHEADER2));
 577     vHeader.cbFix           = sizeof(vHeader);
 578     vHeader.cx              = (USHORT)nWidth;
 579     vHeader.cy              = (USHORT)nHeight;
 580     vHeader.cPlanes         = 1L;
 581     vHeader.cBitCount       = 24;
 582     vHeader.ulCompression   = BCA_UNCOMP;
 583     vHeader.cbImage         = nBytePerLine * nHeight;
 584     vHeader.cclrUsed        = 0;
 585
 586     //
 587     // These seem not really needed for our purpose here.
 588     //
 589     vHeader.cxResolution    = 0;
 590     vHeader.cyResolution    = 0;
 591     vHeader.cclrImportant   = 0;
 592     vHeader.usUnits         = BRU_METRIC;
 593     vHeader.usReserved      = 0;
 594     vHeader.cSize1          = 0;
 595     vHeader.cSize2          = 0;
 596     vHeader.usRecording     = BRA_BOTTOMUP;
 597     vHeader.usRendering     = BRH_NOTHALFTONED;
 598     vHeader.ulColorEncoding = BCE_RGB;
 599     vHeader.ulIdentifier    = 0;
 600
 601     //
 602     // Memory for DIB data
 603     //
 604     unsigned char*                  pucBits;
 605
 606     pucBits = (unsigned char *)malloc(vHeader.cbImage);
 607     if(!pucBits)
 608     {
 609         wxFAIL_MSG(wxT("could not allocate memory for DIB"));
 610         return FALSE;
 611     }
 612
 613     //
 614     // Create and set the device-dependent bitmap
 615     //
 616     DEVOPENSTRUC                    vDop  = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
 617     SIZEL                           vSize = {0, 0};
 618     HDC                             hDC   = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
 619     HPS                             hPS   = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
 620     HBITMAP                         hBmp;
 621     HBITMAP                         hBmpOld;
 622
 623     hBmp = ::GpiCreateBitmap( hPS
 624                              ,&vHeader
 625                              ,0L
 626                              ,NULL
 627                              ,NULL
 628                             );
 629     hBmpOld = ::GpiSetBitmap(hPS, hBmp);
 630 #if wxUSE_PALETTE
 631     HPAL                            hOldPalette = NULLHANDLE;
 632     if (rImage.GetPalette().Ok())
 633     {
 634         hOldPalette = ::GpiSelectPalette(hPS, (HPAL)rImage.GetPalette().GetHPALETTE());
 635     }
 636 #endif // wxUSE_PALETTE
 637
 638     //
 639     // Copy image data into DIB data and then into DDB (in a loop)
 640     //
 641     unsigned char*                  pData = rImage.GetData();
 642     int                             i;
 643     int                             j;
 644     int                             n;
 645     int                             nOrigin = 0;
 646     unsigned char*                  ptdata = pData;
 647     unsigned char*                  ptbits;
 648
 649     for (n = 0; n < nNumDIB; n++)
 650     {
 651         if (nNumDIB > 1 && n == nNumDIB - 1 && nHRemain > 0)
 652         {
 653             //
 654             // Redefine height and size of the (possibly) last smaller DIB
 655             // memory is not reallocated
 656             //
 657             nHeight         = nHRemain;
 658             vHeader.cy      = (DWORD)(nHeight);
 659             vHeader.cbImage = nBytePerLine * nHeight;
 660         }
 661         ptbits = pucBits;
 662         for (j = 0; j < nHeight; j++)
 663         {
 664             for (i = 0; i < nWidth; i++)
 665             {
 666                 *(ptbits++) = *(ptdata + 2);
 667                 *(ptbits++) = *(ptdata + 1);
 668                 *(ptbits++) = *(ptdata);
 669                 ptdata += 3;
 670             }
 671             for (i = 0; i < nPadding; i++)
 672                 *(ptbits++) = 0;
 673         }
 674
 675         //
 676         // Have to do something similar to WIN32's StretchDIBits, use GpiBitBlt
 677         //
 678         POINTL                      vPoint[4] = { 0, nOrigin,
 679                                                   nWidth, nHeight,
 680                                                   0, 0, nWidth, nHeight
 681                                                 };
 682
 683         ::GpiBitBlt( hPS
 684                     ,hPS
 685                     ,4
 686                     ,vPoint
 687                     ,ROP_SRCCOPY
 688                     ,BBO_IGNORE
 689                    );
 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         memset(&vHeader, '\0', sizeof(BITMAPINFOHEADER2));
 704         vHeader.cbFix     =  sizeof(BITMAPINFOHEADER2);
 705         vHeader.cx        = nWidth;
 706         vHeader.cy        = nHeight;
 707         vHeader.cPlanes   = 1;
 708         vHeader.cBitCount = 1;
 709         hBmp = ::GpiCreateBitmap( hPS
 710                                  ,&vHeader
 711                                  ,0L
 712                                  ,NULL
 713                                  ,NULL
 714                                 );
 715         hBmpOld = ::GpiSetBitmap(hPS, hBmp);
 716         if (nNumDIB == 1)
 717             nHeight = nBmpHeight;
 718         else
 719             nHeight = nSizeLimit / nBytePerLine;
 720         vHeader.cy = (DWORD)(nHeight);
 721         vHeader.cbImage = nBytePerLine * nHeight;
 722         nOrigin = 0;
 723
 724         unsigned char               cRed   = rImage.GetMaskRed();
 725         unsigned char               cGreen = rImage.GetMaskGreen();
 726         unsigned char               cBlue  = rImage.GetMaskBlue();
 727         unsigned char               cZero = 0;
 728         unsigned char               cOne = 255;
 729
 730         ptdata = pData;
 731         for (n = 0; n < nNumDIB; n++)
 732         {
 733             if (nNumDIB > 1 && n == nNumDIB - 1 && nHRemain > 0)
 734             {
 735                 //
 736                 // Redefine height and size of the (possibly) last smaller DIB
 737                 // memory is not reallocated
 738                 //
 739                 nHeight         = nHRemain;
 740                 vHeader.cy      = (DWORD)(nHeight);
 741                 vHeader.cbImage = nBytePerLine * nHeight;
 742             }
 743             ptbits = pucBits;
 744             for (int j = 0; j < nHeight; j++)
 745             {
 746                 for (i = 0; i < nWidth; i++)
 747                 {
 748                     if ((*(ptdata++) != cRed) || (*(ptdata++) != cGreen) || (*(ptdata++) != cBlue))
 749                     {
 750                         *(ptbits++) = cOne;
 751                         *(ptbits++) = cOne;
 752                         *(ptbits++) = cOne;
 753                     }
 754                     else
 755                     {
 756                         *(ptbits++) = cZero;
 757                         *(ptbits++) = cZero;
 758                         *(ptbits++) = cZero;
 759                     }
 760                 }
 761                 for (i = 0; i < nPadding; i++)
 762                     *(ptbits++) = cZero;
 763             }
 764             POINTL                  vPoint[4] = { 0, nOrigin,
 765                                                   nWidth, nHeight,
 766                                                   0, 0, nWidth, nHeight
 767                                                 };
 768
 769             ::GpiBitBlt( hPS
 770                         ,hPS
 771                         ,4
 772                         ,vPoint
 773                         ,ROP_SRCCOPY
 774                         ,BBO_IGNORE
 775                        );
 776             nOrigin += nHeight;
 777         }
 778
 779         //
 780         // Create a wxMask object
 781         //
 782         wxMask*                     pMask = new wxMask();
 783
 784         pMask->SetMaskBitmap((WXHBITMAP)hBmp);
 785         SetMask(pMask);
 786         hBmpOld = ::GpiSetBitmap(hPS, hBmp);
 787     }
 788
 789     //
 790     // Free allocated resources
 791     //
 792     ::GpiSetBitmap(hPS, NULLHANDLE);
 793     ::GpiDestroyPS(hPS);
 794     ::DevCloseDC(hDC);
 795     free(pucBits);
 796     return TRUE;
 797 } // end of wxBitmap::CreateFromImage
 798
 799 wxImage wxBitmap::ConvertToImage() const
 800 {
 801     wxImage                         vImage;
 802
 803     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 804
 805     //
 806     // Create an wxImage object
 807     //
 808     int                             nWidth        = GetWidth();
 809     int                             nHeight       = GetHeight();
 810     int                             nDevWidth;
 811     int                             nDevHeight;
 812     int                             nBytePerLine  = nWidth * 3;
 813     int                             nSizeDWORD    = sizeof(DWORD);
 814     int                             nLineBoundary = nBytePerLine % nSizeDWORD;
 815     int                             nPadding = 0;
 816     unsigned char*                  pData;
 817     unsigned char*                  lpBits;
 818     long                            lScans;
 819     BITMAPINFOHEADER2               vDIBh;
 820     BITMAPINFO2                     vDIBInfo;
 821     HDC                             hDCMem;
 822     PSZ                             pszData[4] = { "Display", NULL, NULL, NULL };
 823     HPS                             hPSMem;
 824     HPS                             hPS;
 825     SIZEL                           vSizlPage = {0,0};
 826     HBITMAP                         hBitmap;
 827
 828     vImage.Create( nWidth
 829                   ,nHeight
 830                  );
 831     pData = vImage.GetData();
 832     if(!pData)
 833     {
 834         wxFAIL_MSG( wxT("could not allocate data for image") );
 835         return wxNullImage;
 836     }
 837     if(nLineBoundary > 0)
 838     {
 839         nPadding     = nSizeDWORD - nLineBoundary;
 840         nBytePerLine += nPadding;
 841     }
 842     wxDisplaySize( &nDevWidth
 843                   ,&nDevHeight
 844                  );
 845     //
 846     // Create and fill a DIB header
 847     //
 848     memset(&vDIBh, '\0', sizeof(BITMAPINFOHEADER2));
 849     vDIBh.cbFix     =  sizeof(BITMAPINFOHEADER2);
 850     vDIBh.cx        = nWidth;
 851     vDIBh.cy        = nHeight;
 852     vDIBh.cPlanes   = 1;
 853     vDIBh.cbImage   = nBytePerLine * nHeight;
 854     vDIBh.cBitCount = 24;
 855
 856     memset(&vDIBInfo, '\0', sizeof(BITMAPINFO2));
 857     vDIBInfo.cbFix           = sizeof(BITMAPINFO2);
 858     vDIBInfo.cPlanes         = 1;
 859     vDIBInfo.cBitCount       = 24;
 860     vDIBInfo.ulCompression   = BCA_UNCOMP;
 861     vDIBInfo.usReserved      = 0;
 862     vDIBInfo.usRecording     = BRA_BOTTOMUP;
 863     vDIBInfo.usRendering     = BRH_NOTHALFTONED;
 864     vDIBInfo.ulColorEncoding = BCE_RGB;
 865     vDIBInfo.ulIdentifier    = 0;
 866
 867     lpBits = (unsigned char *)malloc(vDIBh.cbImage);
 868     if (!lpBits)
 869     {
 870         wxFAIL_MSG(wxT("could not allocate data for DIB"));
 871         free(pData);
 872         return wxNullImage;
 873     }
 874
 875     //
 876     // Copy data from the device-dependent bitmap to the DIB
 877     //
 878     hDCMem = ::DevOpenDC( vHabmain
 879                          ,OD_MEMORY
 880                          ,"*"
 881                          ,4
 882                          ,(PDEVOPENDATA)pszData
 883                          ,NULLHANDLE
 884                         );
 885     hPSMem = ::GpiCreatePS( vHabmain
 886                            ,hDCMem
 887                            ,&vSizlPage
 888                            ,PU_PELS | GPIA_ASSOC | GPIT_MICRO
 889                           );
 890     hBitmap = ::GpiCreateBitmap( hPSMem
 891                                 ,&vDIBh
 892                                 ,0L
 893                                 ,NULL
 894                                 ,NULL
 895                                );
 896     lScans = ::GpiQueryBitmapBits( hPSMem
 897                                   ,0L
 898                                   ,(LONG)nHeight
 899                                   ,(PBYTE)lpBits
 900                                   ,&vDIBInfo
 901                                  );
 902
 903     //
 904     // Copy DIB data into the wxImage object
 905     //
 906     int                             i;
 907     int                             j;
 908     unsigned char*                  ptdata = pData;
 909     unsigned char*                  ptbits = lpBits;
 910
 911     for (i = 0; i < nHeight; i++)
 912     {
 913         for (j = 0; j < nWidth; j++)
 914         {
 915             *(ptdata++) = *(ptbits+2);
 916             *(ptdata++) = *(ptbits+1);
 917             *(ptdata++) = *(ptbits  );
 918             ptbits += 3;
 919         }
 920         ptbits += nPadding;
 921     }
 922
 923     //
 924     // Similarly, set data according to the possible mask bitmap
 925     //
 926     if (GetMask() && GetMask()->GetMaskBitmap())
 927     {
 928         hBitmap = (HBITMAP)GetMask()->GetMaskBitmap();
 929
 930         //
 931         // Memory DC/PS created, color set, data copied, and memory DC/PS deleted
 932         //
 933         HDC                         hMemDC = ::DevOpenDC( vHabmain
 934                                                          ,OD_MEMORY
 935                                                          ,"*"
 936                                                          ,4
 937                                                          ,(PDEVOPENDATA)pszData
 938                                                          ,NULLHANDLE
 939                                                         );
 940         HPS                         hMemPS = ::GpiCreatePS( vHabmain
 941                                                            ,hMemDC
 942                                                            ,&vSizlPage
 943                                                            ,PU_PELS | GPIA_ASSOC | GPIT_MICRO
 944                                                           );
 945         ::GpiSetColor(hMemPS, OS2RGB(0, 0, 0));
 946         ::GpiSetBackColor(hMemPS, OS2RGB(255, 255, 255) );
 947         ::GpiQueryBitmapBits( hPSMem
 948                              ,0L
 949                              ,(LONG)nHeight
 950                              ,(PBYTE)lpBits
 951                              ,&vDIBInfo
 952                             );
 953         ::GpiDestroyPS(hMemPS);
 954         ::DevCloseDC(hMemDC);
 955
 956         //
 957         // Background color set to RGB(16,16,16) in consistent with wxGTK
 958         //
 959         unsigned char               ucRed = 16;
 960         unsigned char               ucGreen = 16;
 961         unsigned char               ucBlue = 16;
 962
 963         ptdata = pData;
 964         ptbits = lpBits;
 965         for (i = 0; i < nHeight; i++)
 966         {
 967             for (j = 0; j < nWidth; j++)
 968             {
 969                 if (*ptbits != 0)
 970                     ptdata += 3;
 971                 else
 972                 {
 973                     *(ptdata++)  = ucRed;
 974                     *(ptdata++)  = ucGreen;
 975                     *(ptdata++)  = ucBlue;
 976                 }
 977                 ptbits += 3;
 978             }
 979             ptbits += nPadding;
 980         }
 981         vImage.SetMaskColour( ucRed
 982                              ,ucGreen
 983                              ,ucBlue
 984                             );
 985         vImage.SetMask(TRUE);
 986     }
 987     else
 988     {
 989         vImage.SetMask(FALSE);
 990     }
 991
 992     //
 993     // Free allocated resources
 994     //
 995     ::GpiDestroyPS(hPSMem);
 996     ::DevCloseDC(hDCMem);
 997     free(lpBits);
 998     return vImage;
 999 } // end of wxBitmap::ConvertToImage
1000
1001 // ----------------------------------------------------------------------------
1002 // sub bitmap extraction
1003 // ----------------------------------------------------------------------------
1004
1005 wxBitmap wxBitmap::GetSubBitmap(
1006   const wxRect&                     rRect
1007 ) const
1008 {
1009     wxCHECK_MSG( Ok() &&
1010                  (rRect.x >= 0) && (rRect.y >= 0) &&
1011                  (rRect.x + rRect.width <= GetWidth()) &&
1012                  (rRect.y + rRect.height <= GetHeight()),
1013                  wxNullBitmap, wxT("Invalid bitmap or bitmap region") );
1014
1015     wxBitmap                        vRet( rRect.width
1016                                          ,rRect.height
1017                                          ,GetDepth()
1018                                         );
1019     wxASSERT_MSG( vRet.Ok(), wxT("GetSubBitmap error") );
1020
1021
1022     //
1023     // Copy bitmap data
1024     //
1025     SIZEL                           vSize = {0, 0};
1026     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1027     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1028     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1029     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1030     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1031     POINTL                          vPoint[4] = { rRect.x, rRect.y,
1032                                                   rRect.x + rRect.width, rRect.y + rRect.height,
1033                                                   0, 0, GetWidth(), GetHeight()
1034                                                 };
1035
1036     ::GpiSetBitmap(hPSSrc, (HBITMAP) GetHBITMAP());
1037     ::GpiSetBitmap(hPSDst, (HBITMAP) vRet.GetHBITMAP());
1038     ::GpiBitBlt( hPSDst
1039                 ,hPSSrc
1040                 ,4L
1041                 ,vPoint
1042                 ,ROP_SRCCOPY
1043                 ,BBO_IGNORE
1044                );
1045
1046     //
1047     // Copy mask if there is one
1048     //
1049     if (GetMask())
1050     {
1051         BITMAPINFOHEADER2           vBmih;
1052
1053         memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1054         vBmih.cbFix     = sizeof(BITMAPINFOHEADER2);
1055         vBmih.cx        = rRect.width;
1056         vBmih.cy        = rRect.height;
1057         vBmih.cPlanes   = 1;
1058         vBmih.cBitCount = 1;
1059
1060         HBITMAP                     hBmpMask = ::GpiCreateBitmap( hPSDst
1061                                                                  ,&vBmih
1062                                                                  ,0L
1063                                                                  ,NULL
1064                                                                  ,NULL
1065                                                                 );
1066
1067         ::GpiSetBitmap(hPSSrc, (HBITMAP) GetHBITMAP());
1068         ::GpiSetBitmap(hPSDst, (HBITMAP) vRet.GetHBITMAP());
1069
1070         ::GpiSetBitmap(hPSSrc, (HBITMAP) GetMask()->GetMaskBitmap());
1071         ::GpiSetBitmap(hPSDst, (HBITMAP) hBmpMask);
1072         ::GpiBitBlt( hPSDst
1073                     ,hPSSrc
1074                     ,4L
1075                     ,vPoint
1076                     ,ROP_SRCCOPY
1077                     ,BBO_IGNORE
1078                    );
1079
1080         wxMask*                     pMask = new wxMask((WXHBITMAP)hBmpMask);
1081         vRet.SetMask(pMask);
1082     }
1083
1084     ::GpiSetBitmap(hPSSrc, NULL);
1085     ::GpiSetBitmap(hPSDst, NULL);
1086     ::GpiDestroyPS(hPSSrc);
1087     ::GpiDestroyPS(hPSDst);
1088     ::DevCloseDC(hDCSrc);
1089     ::DevCloseDC(hDCDst);
1090     return vRet;
1091 } // end of wxBitmap::GetSubBitmap
1092
1093 // ----------------------------------------------------------------------------
1094 // wxBitmap accessors
1095 // ----------------------------------------------------------------------------
1096
1097 void wxBitmap::SetQuality(
1098   int                               nQ
1099 )
1100 {
1101     EnsureHasData();
1102
1103     GetBitmapData()->m_nQuality = nQ;
1104 } // end of wxBitmap::SetQuality
1105
1106 #if WXWIN_COMPATIBILITY_2
1107 void wxBitmap::SetOk(
1108   bool                              bOk
1109 )
1110 {
1111     EnsureHasData();
1112
1113     GetBitmapData()->m_bOk = bOk;
1114 } // end of wxBitmap::SetOk
1115 #endif // WXWIN_COMPATIBILITY_2
1116
1117 void wxBitmap::SetPalette(
1118   const wxPalette&                  rPalette
1119 )
1120 {
1121     EnsureHasData();
1122
1123     GetBitmapData()->m_vBitmapPalette = rPalette;
1124 } // end of wxBitmap::SetPalette
1125
1126 void wxBitmap::SetMask(
1127   wxMask*                           pMask
1128 )
1129 {
1130     EnsureHasData();
1131
1132     GetBitmapData()->m_pBitmapMask = pMask;
1133 } // end of wxBitmap::SetMask
1134
1135 wxBitmap wxBitmap::GetBitmapForDC(
1136   wxDC&                             rDc
1137 ) const
1138 {
1139     return(*this);
1140 } // end of wxBitmap::GetBitmapForDC
1141
1142 // ----------------------------------------------------------------------------
1143 // wxMask
1144 // ----------------------------------------------------------------------------
1145
1146 wxMask::wxMask()
1147 {
1148     m_hMaskBitmap = 0;
1149 } // end of wxMask::wxMask
1150
1151 // Construct a mask from a bitmap and a colour indicating
1152 // the transparent area
1153 wxMask::wxMask(
1154   const wxBitmap&                   rBitmap
1155 , const wxColour&                   rColour
1156 )
1157 {
1158     m_hMaskBitmap = 0;
1159     Create( rBitmap
1160            ,rColour
1161           );
1162 } // end of wxMask::wxMask
1163
1164 // Construct a mask from a bitmap and a palette index indicating
1165 // the transparent area
1166 wxMask::wxMask(
1167   const wxBitmap&                   rBitmap
1168 , int                               nPaletteIndex
1169 )
1170 {
1171     m_hMaskBitmap = 0;
1172     Create( rBitmap
1173            ,nPaletteIndex
1174           );
1175 } // end of wxMask::wxMask
1176
1177 // Construct a mask from a mono bitmap (copies the bitmap).
1178 wxMask::wxMask(
1179   const wxBitmap&                   rBitmap
1180 )
1181 {
1182     m_hMaskBitmap = 0;
1183     Create(rBitmap);
1184 } // end of wxMask::wxMask
1185
1186 wxMask::~wxMask()
1187 {
1188     if (m_hMaskBitmap)
1189         ::GpiDeleteBitmap((HBITMAP)m_hMaskBitmap);
1190 } // end of wxMask::~wxMask
1191
1192 // Create a mask from a mono bitmap (copies the bitmap).
1193 bool wxMask::Create(
1194   const wxBitmap&                   rBitmap
1195 )
1196 {
1197     BITMAPINFOHEADER2               vBmih;
1198     SIZEL                           vSize = {0, 0};
1199     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1200     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1201     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1202     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1203     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1204     POINTL                          vPoint[4] = { 0 ,0, rBitmap.GetWidth(), rBitmap.GetHeight(),
1205                                                   0, 0, rBitmap.GetWidth(), rBitmap.GetHeight()
1206                                                 };
1207
1208     if (m_hMaskBitmap)
1209     {
1210         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1211         m_hMaskBitmap = 0;
1212     }
1213     if (!rBitmap.Ok() || rBitmap.GetDepth() != 1)
1214     {
1215         return(FALSE);
1216     }
1217
1218     memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1219     vBmih.cbFix     =  sizeof(BITMAPINFOHEADER2);
1220     vBmih.cx        = rBitmap.GetWidth();
1221     vBmih.cy        = rBitmap.GetHeight();
1222     vBmih.cPlanes   = 1;
1223     vBmih.cBitCount = 1;
1224
1225     m_hMaskBitmap = ::GpiCreateBitmap( hPSDst
1226                                       ,&vBmih
1227                                       ,0L
1228                                       ,NULL
1229                                       ,NULL
1230                                      );
1231
1232     ::GpiSetBitmap(hPSSrc, (HBITMAP) rBitmap.GetHBITMAP());
1233     ::GpiSetBitmap(hPSDst, (HBITMAP) m_hMaskBitmap);
1234     ::GpiBitBlt( hPSDst
1235                 ,hPSSrc
1236                 ,4L
1237                 ,vPoint
1238                 ,ROP_SRCCOPY
1239                 ,BBO_IGNORE
1240                );
1241
1242     ::GpiDestroyPS(hPSSrc);
1243     ::GpiDestroyPS(hPSDst);
1244     ::DevCloseDC(hDCSrc);
1245     ::DevCloseDC(hDCDst);
1246     return(TRUE);
1247 } // end of wxMask::Create
1248
1249 // Create a mask from a bitmap and a palette index indicating
1250 // the transparent area
1251 bool wxMask::Create(
1252   const wxBitmap&                   rBitmap
1253 , int                               nPaletteIndex
1254 )
1255 {
1256     if (m_hMaskBitmap)
1257     {
1258         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1259         m_hMaskBitmap = 0;
1260     }
1261     if (rBitmap.Ok() && rBitmap.GetPalette()->Ok())
1262     {
1263         unsigned char               cRed;
1264         unsigned char               cGreen;
1265         unsigned char               cBlue;
1266
1267         if (rBitmap.GetPalette()->GetRGB( nPaletteIndex
1268                                          ,&cRed
1269                                          ,&cGreen
1270                                          ,&cBlue
1271                                         ))
1272         {
1273             wxColour                vTransparentColour( cRed
1274                                                        ,cGreen
1275                                                        ,cBlue
1276                                                       );
1277
1278             return (Create( rBitmap
1279                            ,vTransparentColour
1280                           ));
1281         }
1282     }
1283     return(FALSE);
1284 } // end of wxMask::Create
1285
1286 // Create a mask from a bitmap and a colour indicating
1287 // the transparent area
1288 bool wxMask::Create(
1289   const wxBitmap&                   rBitmap
1290 , const wxColour&                   rColour
1291 )
1292 {
1293     bool                            bOk = TRUE;
1294     COLORREF                        vMaskColour = OS2RGB( rColour.Red()
1295                                                          ,rColour.Green()
1296                                                          ,rColour.Blue()
1297                                                         );
1298     BITMAPINFOHEADER2               vBmih;
1299     SIZEL                           vSize = {0, 0};
1300     DEVOPENSTRUC                    vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
1301     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1302     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1303     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1304     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1305     POINTL                          vPoint[4] = { 0 ,0, rBitmap.GetWidth(), rBitmap.GetHeight(),
1306                                                   0, 0, rBitmap.GetWidth(), rBitmap.GetHeight()
1307                                                 };
1308
1309     if (m_hMaskBitmap)
1310     {
1311         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1312         m_hMaskBitmap = 0;
1313     }
1314     if (!rBitmap.Ok())
1315     {
1316         return(FALSE);
1317     }
1318
1319     //
1320     // Scan the bitmap for the transparent colour and set
1321     // the corresponding pixels in the mask to BLACK and
1322     // the rest to WHITE
1323     //
1324
1325     memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1326     vBmih.cbFix     =  sizeof(BITMAPINFOHEADER2);
1327     vBmih.cx        = rBitmap.GetWidth();
1328     vBmih.cy        = rBitmap.GetHeight();
1329     vBmih.cPlanes   = 1;
1330     vBmih.cBitCount = 1;
1331
1332     m_hMaskBitmap = ::GpiCreateBitmap( hPSDst
1333                                       ,&vBmih
1334                                       ,0L
1335                                       ,NULL
1336                                       ,NULL
1337                                      );
1338
1339     ::GpiSetBitmap(hPSSrc, (HBITMAP) rBitmap.GetHBITMAP());
1340     ::GpiSetBitmap(hPSDst, (HBITMAP) m_hMaskBitmap);
1341
1342     //
1343     // This is not very efficient, but I can't think
1344     // of a better way of doing it
1345     //
1346     for (int w = 0; w < rBitmap.GetWidth(); w++)
1347     {
1348         for (int h = 0; h < rBitmap.GetHeight(); h++)
1349         {
1350             POINTL                  vPt = {w, h};
1351             COLORREF                vCol = (COLORREF)::GpiQueryPel(hPSSrc, &vPt);
1352             if (vCol == (COLORREF)CLR_NOINDEX)
1353             {
1354                 //
1355                 // Doesn't make sense to continue
1356                 //
1357                 bOk = FALSE;
1358                 break;
1359             }
1360
1361             if (vCol == vMaskColour)
1362             {
1363                 ::GpiSetColor(hPSDst, OS2RGB(0, 0, 0));
1364                 ::GpiSetPel(hPSDst, &vPt);
1365             }
1366             else
1367             {
1368                 ::GpiSetColor(hPSDst, OS2RGB(255, 255, 255));
1369                 ::GpiSetPel(hPSDst, &vPt);
1370             }
1371         }
1372     }
1373     ::GpiSetBitmap(hPSSrc, NULL);
1374     ::GpiSetBitmap(hPSDst, NULL);
1375     ::GpiDestroyPS(hPSSrc);
1376     ::GpiDestroyPS(hPSDst);
1377     ::DevCloseDC(hDCSrc);
1378     ::DevCloseDC(hDCDst);
1379     return(TRUE);
1380 } // end of wxMask::Create
1381
1382 // ----------------------------------------------------------------------------
1383 // wxBitmapHandler
1384 // ----------------------------------------------------------------------------
1385
1386 bool wxBitmapHandler::Create(
1387   wxGDIImage*                       pImage
1388 , void*                             pData
1389 , long                              lFlags
1390 , int                               nWidth
1391 , int                               nHeight
1392 , int                               nDepth
1393 )
1394 {
1395     wxBitmap*                       pBitmap = wxDynamicCast( pImage
1396                                                             ,wxBitmap
1397                                                            );
1398
1399     return(pBitmap ? Create( pBitmap
1400                             ,pData
1401                             ,nWidth
1402                             ,nHeight
1403                             ,nDepth
1404                            ) : FALSE);
1405 }
1406
1407 bool wxBitmapHandler::Load(
1408   wxGDIImage*                       pImage
1409 , const wxString&                   rName
1410 , HPS                               hPs
1411 , long                              lFlags
1412 , int                               nWidth
1413 , int                               nHeight
1414 )
1415 {
1416     wxBitmap*                       pBitmap = wxDynamicCast( pImage
1417                                                             ,wxBitmap
1418                                                            );
1419
1420     return(pBitmap ? LoadFile( pBitmap
1421                               ,rName
1422                               ,hPs
1423                               ,lFlags
1424                               ,nWidth
1425                               ,nHeight
1426                              ) : FALSE);
1427 }
1428
1429 bool wxBitmapHandler::Save(
1430   wxGDIImage*                       pImage
1431 , const wxString&                   rName
1432 , int                               lType
1433 )
1434 {
1435     wxBitmap*                       pBitmap = wxDynamicCast( pImage
1436                                                             ,wxBitmap
1437                                                            );
1438
1439     return(pBitmap ? SaveFile( pBitmap
1440                               ,rName
1441                               ,lType
1442                              ) : FALSE);
1443 }
1444
1445 bool wxBitmapHandler::Create(
1446   wxBitmap*                         WXUNUSED(pBitmap)
1447 , void*                             WXUNUSED(pData)
1448 , long                              WXUNUSED(lType)
1449 , int                               WXUNUSED(nWidth)
1450 , int                               WXUNUSED(nHeight)
1451 , int                               WXUNUSED(nDepth)
1452 )
1453 {
1454     return(FALSE);
1455 }
1456
1457 bool wxBitmapHandler::LoadFile(
1458   wxBitmap*                         WXUNUSED(pBitmap)
1459 , const wxString&                   WXUNUSED(rName)
1460 , HPS                               WXUNUSED(hPs)
1461 , long                              WXUNUSED(lType)
1462 , int                               WXUNUSED(nDesiredWidth)
1463 , int                               WXUNUSED(nDesiredHeight)
1464 )
1465 {
1466     return(FALSE);
1467 }
1468
1469 bool wxBitmapHandler::SaveFile(
1470   wxBitmap*                         WXUNUSED(pBitmap)
1471 , const wxString&                   WXUNUSED(rName)
1472 , int                               WXUNUSED(nType)
1473 , const wxPalette*                  WXUNUSED(pPalette)
1474 )
1475 {
1476     return(FALSE);
1477 }
1478
1479 // ----------------------------------------------------------------------------
1480 // Utility functions
1481 // ----------------------------------------------------------------------------
1482 HBITMAP wxInvertMask(
1483   HBITMAP                           hBmpMask
1484 , int                               nWidth
1485 , int                               nHeight
1486 )
1487 {
1488     HBITMAP                         hBmpInvMask = 0;
1489
1490     wxCHECK_MSG( hBmpMask, 0, _T("invalid bitmap in wxInvertMask") );
1491
1492     //
1493     // Get width/height from the bitmap if not given
1494     //
1495     if (!nWidth || !nHeight)
1496     {
1497         BITMAPINFOHEADER2           vBmhdr;
1498
1499         ::GpiQueryBitmapInfoHeader( hBmpMask
1500                                    ,&vBmhdr
1501                                   );
1502         nWidth  = (int)vBmhdr.cx;
1503         nHeight = (int)vBmhdr.cy;
1504     }
1505
1506     BITMAPINFOHEADER2               vBmih;
1507     SIZEL                           vSize = {0, 0};
1508     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1509     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1510     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1511     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1512     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1513     POINTL                          vPoint[4] = { 0 ,0, nWidth, nHeight,
1514                                                   0, 0, nWidth, nHeight
1515                                                 };
1516
1517     memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1518     vBmih.cbFix     =  sizeof(BITMAPINFOHEADER2);
1519     vBmih.cx        = nWidth;
1520     vBmih.cy        = nHeight;
1521     vBmih.cPlanes   = 1;
1522     vBmih.cBitCount = 1;
1523
1524     hBmpInvMask = ::GpiCreateBitmap( hPSDst
1525                                     ,&vBmih
1526                                     ,0L
1527                                     ,NULL
1528                                     ,NULL
1529                                    );
1530
1531     ::GpiSetBitmap(hPSSrc, (HBITMAP) hBmpMask);
1532     ::GpiSetBitmap(hPSDst, (HBITMAP) hBmpInvMask);
1533
1534     ::GpiBitBlt( hPSDst
1535                 ,hPSSrc
1536                 ,4L
1537                 ,vPoint
1538                 ,ROP_SRCINVERT
1539                 ,BBO_IGNORE
1540                );
1541
1542     ::GpiDestroyPS(hPSSrc);
1543     ::GpiDestroyPS(hPSDst);
1544     ::DevCloseDC(hDCSrc);
1545     ::DevCloseDC(hDCDst);
1546
1547     return hBmpInvMask;
1548 } // end of WxWinGdi_InvertMask
1549