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     if (m_pBitmapMask)
  78     {
  79         delete m_pBitmapMask;
  80         m_pBitmapMask = NULL;
  81     }
  82 } // end of wxBitmapRefData::Free
  83
  84 // ----------------------------------------------------------------------------
  85 // wxBitmap creation
  86 // ----------------------------------------------------------------------------
  87
  88 // this function should be called from all wxBitmap ctors
  89 void wxBitmap::Init()
  90 {
  91     m_bIsMono = FALSE;
  92     //
  93     // True for all bitmaps created from bits, wxImages, Xpms
  94     //
  95 } // end of wxBitmap::Init
  96
  97 bool wxBitmap::CopyFromIconOrCursor(
  98   const wxGDIImage&                 rIcon
  99 )
 100 {
 101     HPOINTER                        hIcon = (HPOINTER)rIcon.GetHandle();
 102     POINTERINFO                     SIconInfo;
 103
 104     if (!::WinQueryPointerInfo(hIcon, &SIconInfo))
 105     {
 106         wxLogLastError(wxT("WinQueryPointerInfo"));
 107         return FALSE;
 108     }
 109     wxBitmapRefData*                pRefData = new wxBitmapRefData;
 110
 111     m_refData = pRefData;
 112
 113     int                             nWidth = rIcon.GetWidth();
 114     int                             nHeight = rIcon.GetHeight();
 115
 116     pRefData->m_nWidth  = nWidth;
 117     pRefData->m_nHeight = nHeight;
 118     pRefData->m_nDepth  = wxDisplayDepth();
 119
 120     pRefData->m_hBitmap = (WXHBITMAP)SIconInfo.hbmColor;
 121
 122     wxMask*                         pMask = new wxMask(SIconInfo.hbmPointer);
 123
 124     pMask->SetMaskBitmap(GetHBITMAP());
 125     SetMask(pMask);
 126
 127     return(TRUE);
 128 } // end of wxBitmap::CopyFromIconOrCursor
 129
 130 bool wxBitmap::CopyFromCursor(
 131   const wxCursor&                   rCursor
 132 )
 133 {
 134     UnRef();
 135
 136     if (!rCursor.Ok())
 137         return(FALSE);
 138     return(CopyFromIconOrCursor(rCursor));
 139 } // end of wxBitmap::CopyFromCursor
 140
 141 bool wxBitmap::CopyFromIcon(
 142   const wxIcon&                     rIcon
 143 )
 144 {
 145     UnRef();
 146
 147     if (!rIcon.Ok())
 148         return(FALSE);
 149
 150     return CopyFromIconOrCursor(rIcon);
 151 } // end of wxBitmap::CopyFromIcon
 152
 153 wxBitmap::~wxBitmap()
 154 {
 155 } // end of wxBitmap::~wxBitmap
 156
 157 wxBitmap::wxBitmap(
 158   const char                        zBits[]
 159 , int                               nWidth
 160 , int                               nHeight
 161 , int                               nDepth
 162 )
 163 {
 164     Init();
 165
 166     wxBitmapRefData*                pRefData = new wxBitmapRefData;
 167     BITMAPINFOHEADER2               vHeader;
 168     BITMAPINFO2                     vInfo;
 169     HDC                             hDc;
 170     HPS                             hPs;
 171     DEVOPENSTRUC                    vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
 172     SIZEL                           vSize = {0, 0};
 173     char*                           pzData;
 174
 175     wxASSERT(vHabmain != NULL);
 176
 177     m_refData = pRefData;
 178
 179     pRefData->m_nWidth        = nWidth;
 180     pRefData->m_nHeight       = nHeight;
 181     pRefData->m_nDepth        = nDepth;
 182     pRefData->m_nNumColors    = 0;
 183     pRefData->m_pSelectedInto = NULL;
 184
 185     hDc   = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
 186     hPs = ::GpiCreatePS(vHabmain, hDc, &vSize, GPIA_ASSOC | PU_PELS);
 187     if (hPs == 0)
 188     {
 189         wxLogLastError("GpiCreatePS Failure");
 190     }
 191
 192     if (nDepth == 1)
 193     {
 194         //
 195         // We assume that it is in XBM format which is not quite the same as
 196         // the format CreateBitmap() wants because the order of bytes in the
 197         // line is inversed!
 198         //
 199         const size_t                nBytesPerLine = (nWidth + 7) / 8;
 200         const size_t                nPadding = nBytesPerLine % 2;
 201         const size_t                nLen = nHeight * (nPadding + nBytesPerLine);
 202         const char*                 pzSrc = zBits;
 203         int                         nRows;
 204         size_t                      nCols;
 205
 206         pzData = (char *)malloc(nLen);
 207
 208         char*                       pzDst = pzData;
 209
 210         for (nRows = 0; nRows < nHeight; nRows++)
 211         {
 212             for (nCols = 0; nCols < nBytesPerLine; nCols++)
 213             {
 214                 unsigned char       ucVal = *pzSrc++;
 215                 unsigned char       ucReversed = 0;
 216                 int                 nBits;
 217
 218                 for (nBits = 0; nBits < 8; nBits++)
 219                 {
 220                     ucReversed <<= 1;
 221                     ucReversed |= (ucVal & 0x01);
 222                     ucVal >>= 1;
 223                 }
 224                 *pzDst++ = ucReversed;
 225             }
 226             if (nPadding)
 227                 *pzDst++ = 0;
 228         }
 229     }
 230     else
 231     {
 232         //
 233         // Bits should already be in Windows standard format
 234         //
 235         pzData = (char *)zBits;    // const_cast is harmless
 236     }
 237
 238     if (nDepth > 24)
 239         nDepth = 24; // MAX supported in PM
 240     memset(&vHeader, '\0', 16);
 241     vHeader.cbFix           = 16;
 242     vHeader.cx              = (USHORT)nWidth;
 243     vHeader.cy              = (USHORT)nHeight;
 244     vHeader.cPlanes         = 1L;
 245     vHeader.cBitCount       = nDepth;
 246     vHeader.usReserved      = 0;
 247
 248     memset(&vInfo, '\0', 16);
 249     vInfo.cbFix           = 16;
 250     vInfo.cx              = (USHORT)nWidth;
 251     vInfo.cy              = (USHORT)nHeight;
 252     vInfo.cPlanes         = 1L;
 253     vInfo.cBitCount       = nDepth;
 254
 255     HBITMAP                         hBmp = ::GpiCreateBitmap(hPs, &vHeader, CBM_INIT, (PBYTE)pzData, &vInfo);
 256
 257     if (!hBmp)
 258     {
 259         wxLogLastError("CreateBitmap");
 260     }
 261     ::GpiDestroyPS(hPs);
 262     ::DevCloseDC(hDc);
 263     SetHBITMAP((WXHBITMAP)hBmp);
 264 } // end of wxBitmap::wxBitmap
 265
 266 wxBitmap::wxBitmap(
 267   int                               nW
 268 , int                               nH
 269 , int                               nD
 270 )
 271 {
 272     Init();
 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   int                               nId
 299 , long                              lType
 300 )
 301 {
 302     Init();
 303     LoadFile( nId
 304              ,(int)lType
 305             );
 306     SetId(nId);
 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     //
 326     // Xpms and bitmaps from other images can also be mono's, but only
 327     // mono's need help changing their colors with MemDC changes
 328     //
 329     if (nD > 0)
 330     {
 331         DEVOPENSTRUC                vDop  = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
 332         SIZEL                       vSize = {0, 0};
 333         HDC                         hDC   = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
 334         HPS                         hPS   = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
 335
 336         if (nD == 1)
 337             m_bIsMono = TRUE;
 338         memset(&vHeader, '\0', 16);
 339         vHeader.cbFix     =  16;
 340         vHeader.cx        = nW;
 341         vHeader.cy        = nH;
 342         vHeader.cPlanes   = 1;
 343         vHeader.cBitCount = 24; //nD;
 344
 345         hBmp = ::GpiCreateBitmap( hPS
 346                                  ,&vHeader
 347                                  ,0L
 348                                  ,NULL
 349                                  ,NULL
 350                                 );
 351         ::GpiDestroyPS(hPS);
 352         ::DevCloseDC(hDC);
 353     }
 354     else
 355     {
 356         HPS                             hPSScreen;
 357         HDC                             hDCScreen;
 358         LONG                            lBitCount;
 359
 360         hPSScreen = ::WinGetScreenPS(HWND_DESKTOP);
 361         hDCScreen = ::GpiQueryDevice(hPSScreen);
 362         ::DevQueryCaps(hDCScreen, CAPS_COLOR_BITCOUNT, 1L, &lBitCount);
 363
 364         if (lBitCount > 24)
 365             lBitCount = 24;
 366
 367         memset(&vHeader, '\0', 16);
 368         vHeader.cbFix     =  16;
 369         vHeader.cx        = nW;
 370         vHeader.cy        = nH;
 371         vHeader.cPlanes   = 1;
 372         vHeader.cBitCount = lBitCount;
 373
 374         hBmp = ::GpiCreateBitmap( hPSScreen
 375                                  ,&vHeader
 376                                  ,0L
 377                                  ,NULL
 378                                  ,NULL
 379                                 );
 380
 381         GetBitmapData()->m_nDepth = wxDisplayDepth();
 382         ::WinReleasePS(hPSScreen);
 383     }
 384     SetHBITMAP((WXHBITMAP)hBmp);
 385
 386 #if WXWIN_COMPATIBILITY_2
 387     GetBitmapData()->m_bOk = hBmp != 0;
 388 #endif // WXWIN_COMPATIBILITY_2
 389
 390     return Ok();
 391 } // end of wxBitmap::Create
 392
 393 bool wxBitmap::CreateFromXpm(
 394   const char**                      ppData
 395 )
 396 {
 397 #if wxUSE_IMAGE && wxUSE_XPM
 398     Init();
 399
 400     wxCHECK_MSG(ppData != NULL, FALSE, wxT("invalid bitmap data"))
 401
 402     wxXPMDecoder                    vDecoder;
 403     wxImage                         vImg = vDecoder.ReadData(ppData);
 404
 405     wxCHECK_MSG(vImg.Ok(), FALSE, wxT("invalid bitmap data"))
 406
 407     *this = wxBitmap(vImg);
 408     return TRUE;
 409 #else
 410     return FALSE;
 411 #endif
 412 } // end of wxBitmap::CreateFromXpm
 413
 414 bool wxBitmap::LoadFile(
 415   int                               nId
 416 , long                              lType
 417 )
 418 {
 419     HPS                             hPs = NULLHANDLE;
 420
 421     UnRef();
 422
 423     wxBitmapHandler*                pHandler = wxDynamicCast( FindHandler(lType)
 424                                                              ,wxBitmapHandler
 425                                                             );
 426
 427     if (pHandler)
 428     {
 429         m_refData = new wxBitmapRefData;
 430
 431         return(pHandler->LoadFile( this
 432                                   ,nId
 433                                   ,lType
 434                                   , -1
 435                                   , -1
 436                                  ));
 437     }
 438     else
 439     {
 440         return(FALSE);
 441     }
 442 } // end of wxBitmap::LoadFile
 443
 444 bool wxBitmap::Create(
 445   void*                             pData
 446 , long                              lType
 447 , int                               nWidth
 448 , int                               nHeight
 449 , int                               nDepth
 450 )
 451 {
 452     UnRef();
 453
 454     wxBitmapHandler*                pHandler = wxDynamicCast( FindHandler(lType)
 455                                                              ,wxBitmapHandler
 456                                                             );
 457
 458     if (!pHandler)
 459     {
 460         wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for "
 461                        "type %d defined."), lType);
 462
 463         return(FALSE);
 464     }
 465
 466     m_refData = new wxBitmapRefData;
 467
 468     return(pHandler->Create( this
 469                             ,pData
 470                             ,lType
 471                             ,nWidth
 472                             ,nHeight
 473                             ,nDepth
 474                            ));
 475 } // end of wxBitmap::Create
 476
 477 bool wxBitmap::SaveFile(
 478   const wxString&                   rFilename
 479 , int                               lType
 480 , const wxPalette*                  pPalette
 481 )
 482 {
 483     wxBitmapHandler*                pHandler = wxDynamicCast( FindHandler(lType)
 484                                                              ,wxBitmapHandler
 485                                                             );
 486
 487     if (pHandler)
 488     {
 489         return pHandler->SaveFile( this
 490                                   ,rFilename
 491                                   ,lType
 492                                   ,pPalette
 493                                  );
 494     }
 495     else
 496     {
 497         // FIXME what about palette? shouldn't we use it?
 498         wxImage                     vImage = ConvertToImage();
 499
 500         if (!vImage.Ok())
 501             return(FALSE);
 502
 503         return(vImage.SaveFile( rFilename
 504                                ,lType
 505                               ));
 506     }
 507 } // end of wxBitmap::SaveFile
 508
 509
 510 // ----------------------------------------------------------------------------
 511 // wxImage-wxBitmap conversion
 512 // ----------------------------------------------------------------------------
 513
 514 bool wxBitmap::CreateFromImage (
 515   const wxImage&                    rImage
 516 , int                               nDepth
 517 )
 518 {
 519     wxCHECK_MSG(rImage.Ok(), FALSE, wxT("invalid image"));
 520     m_refData = new wxBitmapRefData();
 521
 522     int                             nSizeLimit = 1024 * 768 * 3;
 523     int                             nWidth = rImage.GetWidth();
 524     int                             nBmpHeight = rImage.GetHeight();
 525     int                             nBytePerLine = nWidth * 3;
 526     int                             nSizeDWORD = sizeof(DWORD);
 527     int                             nLineBoundary = nBytePerLine % nSizeDWORD;
 528     int                             nPadding = 0;
 529
 530     if (nLineBoundary > 0)
 531     {
 532         nPadding = nSizeDWORD - nLineBoundary;
 533         nBytePerLine += nPadding;
 534     }
 535
 536     //
 537     // Calc the number of DIBs and heights of DIBs
 538     //
 539     int                             nNumDIB = 1;
 540     int                             nHRemain = 0;
 541     int                             nHeight = nSizeLimit / nBytePerLine;
 542
 543     if (nHeight >= nBmpHeight)
 544         nHeight = nBmpHeight;
 545     else
 546     {
 547         nNumDIB  = nBmpHeight / nHeight;
 548         nHRemain = nBmpHeight % nHeight;
 549         if (nHRemain > 0)
 550             nNumDIB++;
 551     }
 552
 553     //
 554     // Set bitmap parameters
 555     //
 556     wxCHECK_MSG(rImage.Ok(), FALSE, wxT("invalid image"));
 557     SetWidth(nWidth);
 558     SetHeight(nBmpHeight);
 559     if (nDepth == 1)
 560         m_bIsMono = TRUE;
 561     else
 562         m_bIsMono = FALSE;
 563     if (nDepth == -1)
 564         nDepth = wxDisplayDepth();
 565     SetDepth(nDepth);
 566
 567 #if wxUSE_PALETTE
 568     //
 569     // Copy the palette from the source image
 570     //
 571     SetPalette(rImage.GetPalette());
 572 #endif // wxUSE_PALETTE
 573
 574     //
 575     // Create a DIB header
 576     //
 577     BITMAPINFOHEADER2               vHeader;
 578     BITMAPINFO2                     vInfo;
 579
 580     //
 581     // Fill in the DIB header
 582     //
 583     memset(&vHeader, '\0', 16);
 584     vHeader.cbFix           = 16;
 585     vHeader.cx              = (ULONG)nWidth;
 586     vHeader.cy              = (ULONG)nHeight;
 587     vHeader.cPlanes         = 1L;
 588     vHeader.cBitCount       = 24;
 589
 590     //
 591     // Memory for DIB data
 592     //
 593     unsigned char*                  pucBits;
 594
 595     pucBits = (unsigned char *)malloc(nBytePerLine * nHeight);
 596     if(!pucBits)
 597     {
 598         wxFAIL_MSG(wxT("could not allocate memory for DIB"));
 599         return FALSE;
 600     }
 601     memset(pucBits, '\0', (nBytePerLine * nHeight));
 602
 603     //
 604     // Create and set the device-dependent bitmap
 605     //
 606     DEVOPENSTRUC                    vDop  = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
 607     SIZEL                           vSize = {0, 0};
 608     HDC                             hDC   = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
 609     HPS                             hPS   = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
 610     LONG                            lScans;
 611     HDC                             hDCScreen = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
 612     HPS                             hPSScreen;
 613     HBITMAP                         hBmp;
 614     HBITMAP                         hBmpOld;
 615
 616     memset(&vInfo, '\0', 16);
 617     vInfo.cbFix           = 16;
 618     vInfo.cx              = (ULONG)nWidth;
 619     vInfo.cy              = (ULONG)nHeight;
 620     vInfo.cPlanes         = 1;
 621     vInfo.cBitCount       = 24; // Set to desired count going in
 622
 623     hBmp = ::GpiCreateBitmap( hPS
 624                              ,&vHeader
 625                              ,0L
 626                              ,NULL
 627                              ,NULL
 628                             );
 629 #if wxUSE_PALETTE
 630     HPAL                            hOldPalette = NULLHANDLE;
 631     if (rImage.GetPalette().Ok())
 632     {
 633         hOldPalette = ::GpiSelectPalette(hPS, (HPAL)rImage.GetPalette().GetHPALETTE());
 634     }
 635 #endif // wxUSE_PALETTE
 636
 637     //
 638     // Copy image data into DIB data and then into DDB (in a loop)
 639     //
 640     unsigned char*                  pData = rImage.GetData();
 641     int                             i;
 642     int                             j;
 643     int                             n;
 644     int                             nOrigin = 0;
 645     unsigned char*                  ptdata = pData;
 646     unsigned char*                  ptbits;
 647
 648     if ((hBmpOld = ::GpiSetBitmap(hPS, hBmp)) == HBM_ERROR)
 649     {
 650         ERRORID                 vError;
 651         wxString                sError;
 652
 653         vError = ::WinGetLastError(vHabmain);
 654         sError = wxPMErrorToStr(vError);
 655     }
 656     for (n = 0; n < nNumDIB; n++)
 657     {
 658         if (nNumDIB > 1 && n == nNumDIB - 1 && nHRemain > 0)
 659         {
 660             //
 661             // Redefine height and size of the (possibly) last smaller DIB
 662             // memory is not reallocated
 663             //
 664             nHeight         = nHRemain;
 665             vHeader.cy      = (DWORD)(nHeight);
 666             vHeader.cbImage = nBytePerLine * nHeight;
 667         }
 668         ptbits = pucBits;
 669         for (j = 0; j < nHeight; j++)
 670         {
 671             for (i = 0; i < nWidth; i++)
 672             {
 673                 *(ptbits++) = *(ptdata + 2);
 674                 *(ptbits++) = *(ptdata + 1);
 675                 *(ptbits++) = *(ptdata);
 676                 ptdata += 3;
 677             }
 678             for (i = 0; i < nPadding; i++)
 679                 *(ptbits++) = 0;
 680         }
 681
 682         //
 683         // Have to do something similar to WIN32's StretchDIBits, use GpiBitBlt
 684         // in combination with setting the bits into the selected bitmap
 685         //
 686         if ((lScans = ::GpiSetBitmapBits( hPS
 687                                          ,0             // Start at the bottom
 688                                          ,(LONG)nHeight // One line per scan
 689                                          ,(PBYTE)pucBits
 690                                          ,&vInfo
 691                                        )) == GPI_ALTERROR)
 692         {
 693             ERRORID                 vError;
 694             wxString                sError;
 695
 696             vError = ::WinGetLastError(vHabmain);
 697             sError = wxPMErrorToStr(vError);
 698         }
 699         hPSScreen = ::GpiCreatePS( vHabmain
 700                                   ,hDCScreen
 701                                   ,&vSize
 702                                   ,PU_PELS | GPIA_ASSOC
 703                                  );
 704
 705         POINTL                      vPoint[4] = { 0, nOrigin,
 706                                                   nWidth, nHeight,
 707                                                   0, 0, nWidth, nHeight
 708                                                 };
 709
 710
 711         ::GpiBitBlt( hPSScreen
 712                     ,hPS
 713                     ,4
 714                     ,vPoint
 715                     ,ROP_SRCCOPY
 716                     ,BBO_IGNORE
 717                    );
 718         ::GpiDestroyPS(hPSScreen);
 719         nOrigin += nHeight;
 720     }
 721     SetHBITMAP((WXHBITMAP)hBmp);
 722 #if wxUSE_PALETTE
 723     if (hOldPalette)
 724         ::GpiSelectPalette(hPS, hOldPalette);
 725 #endif // wxUSE_PALETTE
 726
 727     //
 728     // Similarly, created an mono-bitmap for the possible mask
 729     //
 730     if (rImage.HasMask())
 731     {
 732         vHeader.cbFix     = 16;
 733         vHeader.cx        = nWidth;
 734         vHeader.cy        = nHeight;
 735         vHeader.cPlanes   = 1;
 736         vHeader.cBitCount = 24;
 737         hBmp = ::GpiCreateBitmap( hPS
 738                                  ,&vHeader
 739                                  ,0L
 740                                  ,NULL
 741                                  ,NULL
 742                                 );
 743         hBmpOld = ::GpiSetBitmap(hPS, hBmp);
 744         if (nNumDIB == 1)
 745             nHeight = nBmpHeight;
 746         else
 747             nHeight = nSizeLimit / nBytePerLine;
 748         vHeader.cy = (DWORD)(nHeight);
 749         nOrigin = 0;
 750
 751         unsigned char               cRed   = rImage.GetMaskRed();
 752         unsigned char               cGreen = rImage.GetMaskGreen();
 753         unsigned char               cBlue  = rImage.GetMaskBlue();
 754         unsigned char               cZero = 0;
 755         unsigned char               cOne = 255;
 756
 757         ptdata = pData;
 758         for (n = 0; n < nNumDIB; n++)
 759         {
 760             if (nNumDIB > 1 && n == nNumDIB - 1 && nHRemain > 0)
 761             {
 762                 //
 763                 // Redefine height and size of the (possibly) last smaller DIB
 764                 // memory is not reallocated
 765                 //
 766                 nHeight         = nHRemain;
 767                 vHeader.cy      = (DWORD)(nHeight);
 768                 vHeader.cbImage = nBytePerLine * nHeight;
 769             }
 770             ptbits = pucBits;
 771             for (int j = 0; j < nHeight; j++)
 772             {
 773                 for (i = 0; i < nWidth; i++)
 774                 {
 775                     unsigned char cRedImage   = (*(ptdata++)) ;
 776                     unsigned char cGreenImage = (*(ptdata++)) ;
 777                     unsigned char cBlueImage  = (*(ptdata++)) ;
 778
 779                     if ((cRedImage != cRed) || (cGreenImage != cGreen) || (cBlueImage != cBlue))
 780                     {
 781                         *(ptbits++) = cOne;
 782                         *(ptbits++) = cOne;
 783                         *(ptbits++) = cOne;
 784                     }
 785                     else
 786                     {
 787                         *(ptbits++) = cZero;
 788                         *(ptbits++) = cZero;
 789                         *(ptbits++) = cZero;
 790                     }
 791                 }
 792                 for (i = 0; i < nPadding; i++)
 793                     *(ptbits++) = cZero;
 794             }
 795             lScans = ::GpiSetBitmapBits( hPS
 796                                         ,0              // Start at the bottom
 797                                         ,(LONG)nHeight // One line per scan
 798                                         ,(PBYTE)pucBits
 799                                         ,&vInfo
 800                                        );
 801             hPSScreen = ::GpiCreatePS( vHabmain
 802                                       ,hDCScreen
 803                                       ,&vSize
 804                                       ,PU_PELS | GPIA_ASSOC
 805                                      );
 806             POINTL vPoint2[4] = { 0, nOrigin,
 807                                   nWidth, nHeight,
 808                                   0, 0, nWidth, nHeight
 809                                 };
 810             ::GpiBitBlt( hPSScreen
 811                         ,hPS
 812                         ,4
 813                         ,vPoint2
 814                         ,ROP_SRCCOPY
 815                         ,BBO_IGNORE
 816                    );
 817             ::GpiDestroyPS(hPSScreen);
 818             nOrigin += nHeight;
 819         }
 820
 821         //
 822         // Create a wxMask object
 823         //
 824         wxMask*                     pMask = new wxMask();
 825
 826         pMask->SetMaskBitmap((WXHBITMAP)hBmp);
 827         SetMask(pMask);
 828         hBmpOld = ::GpiSetBitmap(hPS, hBmpOld);
 829     }
 830
 831     //
 832     // Free allocated resources
 833     //
 834     ::GpiSetBitmap(hPS, NULLHANDLE);
 835     ::GpiDestroyPS(hPS);
 836     ::DevCloseDC(hDCScreen);
 837     ::DevCloseDC(hDC);
 838     free(pucBits);
 839     return TRUE;
 840 } // end of wxBitmap::CreateFromImage
 841
 842 wxImage wxBitmap::ConvertToImage() const
 843 {
 844     wxImage                         vImage;
 845     wxDC*                           pDC;
 846
 847     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 848
 849     //
 850     // Create an wxImage object
 851     //
 852     int                             nWidth        = GetWidth();
 853     int                             nHeight       = GetHeight();
 854     int                             nDevWidth;
 855     int                             nDevHeight;
 856     int                             nBytePerLine  = nWidth * 3;
 857     int                             nSizeDWORD    = sizeof(DWORD);
 858     int                             nLineBoundary = nBytePerLine % nSizeDWORD;
 859     int                             nPadding = 0;
 860     unsigned char*                  pData;
 861     unsigned char*                  lpBits;
 862     long                            lScans;
 863     BITMAPINFOHEADER2               vDIBh;
 864     BITMAPINFO2                     vDIBInfo;
 865     HPS                             hPSMem;
 866     HPS                             hPS;
 867     HBITMAP                         hBitmap;
 868     HBITMAP                         hOldBitmap;
 869     DEVOPENSTRUC                    vDop  = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
 870     SIZEL                           vSizlPage = {0,0};
 871     HDC                             hDCMem;
 872
 873     vImage.Create( nWidth
 874                   ,nHeight
 875                  );
 876     pData = vImage.GetData();
 877     if(!pData)
 878     {
 879         wxFAIL_MSG( wxT("could not allocate data for image") );
 880         return wxNullImage;
 881     }
 882     if(nLineBoundary > 0)
 883     {
 884         nPadding     = nSizeDWORD - nLineBoundary;
 885         nBytePerLine += nPadding;
 886     }
 887     wxDisplaySize( &nDevWidth
 888                   ,&nDevHeight
 889                  );
 890     //
 891     // Create and fill a DIB header
 892     //
 893     memset(&vDIBh, '\0', 16);
 894     vDIBh.cbFix     =  16;
 895     vDIBh.cx        = nWidth;
 896     vDIBh.cy        = nHeight;
 897     vDIBh.cPlanes   = 1;
 898     vDIBh.cBitCount = 24;
 899
 900     memset(&vDIBInfo, '\0', 16);
 901     vDIBInfo.cbFix           = 16;
 902     vDIBInfo.cx              = nWidth;
 903     vDIBInfo.cy              = nHeight;
 904     vDIBInfo.cPlanes         = 1;
 905     vDIBInfo.cBitCount       = 24;
 906
 907     lpBits = (unsigned char *)malloc(nBytePerLine * nHeight);
 908     if (!lpBits)
 909     {
 910         wxFAIL_MSG(wxT("could not allocate data for DIB"));
 911         free(pData);
 912         return wxNullImage;
 913     }
 914     memset(lpBits, '\0', (nBytePerLine * nHeight));
 915     hBitmap = (HBITMAP)GetHBITMAP();
 916
 917     //
 918     // May already be selected into a PS
 919     //
 920     if ((pDC = GetSelectedInto()) != NULL)
 921     {
 922         hPSMem = pDC->GetHPS();
 923     }
 924     else
 925     {
 926         hDCMem = ::DevOpenDC( vHabmain
 927                              ,OD_MEMORY
 928                              ,"*"
 929                              ,5L
 930                              ,(PDEVOPENDATA)&vDop
 931                              ,NULLHANDLE
 932                             );
 933         hPSMem = ::GpiCreatePS( vHabmain
 934                                ,hDCMem
 935                                ,&vSizlPage
 936                                ,PU_PELS | GPIA_ASSOC
 937                               );
 938     }
 939     if ((hOldBitmap = ::GpiSetBitmap(hPSMem, hBitmap)) == HBM_ERROR)
 940     {
 941         ERRORID                 vError;
 942         wxString                sError;
 943
 944         vError = ::WinGetLastError(vHabmain);
 945         sError = wxPMErrorToStr(vError);
 946     }
 947
 948     //
 949     // Copy data from the device-dependent bitmap to the DIB
 950     //
 951     if ((lScans = ::GpiQueryBitmapBits( hPSMem
 952                                        ,0L
 953                                        ,(LONG)nHeight
 954                                        ,(PBYTE)lpBits
 955                                        ,&vDIBInfo
 956                                       )) == GPI_ALTERROR)
 957     {
 958         ERRORID                     vError;
 959         wxString                    sError;
 960
 961         vError = ::WinGetLastError(vHabmain);
 962         sError = wxPMErrorToStr(vError);
 963     }
 964
 965     //
 966     // Copy DIB data into the wxImage object
 967     //
 968     int                             i;
 969     int                             j;
 970     unsigned char*                  ptdata = pData;
 971     unsigned char*                  ptbits = lpBits;
 972
 973     for (i = 0; i < nHeight; i++)
 974     {
 975         for (j = 0; j < nWidth; j++)
 976         {
 977             *(ptdata++) = *(ptbits+2);
 978             *(ptdata++) = *(ptbits+1);
 979             *(ptdata++) = *(ptbits  );
 980             ptbits += 3;
 981         }
 982         ptbits += nPadding;
 983     }
 984     if ((pDC = GetSelectedInto()) == NULL)
 985     {
 986         ::GpiSetBitmap(hPSMem, NULLHANDLE);
 987         ::GpiDestroyPS(hPSMem);
 988         ::DevCloseDC(hDCMem);
 989     }
 990
 991     //
 992     // Similarly, set data according to the possible mask bitmap
 993     //
 994     if (GetMask() && GetMask()->GetMaskBitmap())
 995     {
 996         hBitmap = (HBITMAP)GetMask()->GetMaskBitmap();
 997
 998         //
 999         // Memory DC/PS created, color set, data copied, and memory DC/PS deleted
1000         //
1001         HDC                        hMemDC = ::DevOpenDC( vHabmain
1002                                                         ,OD_MEMORY
1003                                                         ,"*"
1004                                                         ,5L
1005                                                         ,(PDEVOPENDATA)&vDop
1006                                                         ,NULLHANDLE
1007                                                        );
1008         HPS                         hMemPS = ::GpiCreatePS( vHabmain
1009                                                            ,hMemDC
1010                                                            ,&vSizlPage
1011                                                            ,PU_PELS | GPIA_ASSOC
1012                                                           );
1013         ::GpiSetColor(hMemPS, OS2RGB(0, 0, 0));
1014         ::GpiSetBackColor(hMemPS, OS2RGB(255, 255, 255) );
1015         ::GpiSetBitmap(hMemPS, hBitmap);
1016         ::GpiQueryBitmapBits( hPSMem
1017                              ,0L
1018                              ,(LONG)nHeight
1019                              ,(PBYTE)lpBits
1020                              ,&vDIBInfo
1021                             );
1022         ::GpiSetBitmap(hMemPS, NULLHANDLE);
1023         ::GpiDestroyPS(hMemPS);
1024         ::DevCloseDC(hMemDC);
1025
1026         //
1027         // Background color set to RGB(16,16,16) in consistent with wxGTK
1028         //
1029         unsigned char               ucRed = 16;
1030         unsigned char               ucGreen = 16;
1031         unsigned char               ucBlue = 16;
1032
1033         ptdata = pData;
1034         ptbits = lpBits;
1035         for (i = 0; i < nHeight; i++)
1036         {
1037             for (j = 0; j < nWidth; j++)
1038             {
1039                 if (*ptbits != 0)
1040                     ptdata += 3;
1041                 else
1042                 {
1043                     *(ptdata++)  = ucRed;
1044                     *(ptdata++)  = ucGreen;
1045                     *(ptdata++)  = ucBlue;
1046                 }
1047                 ptbits += 3;
1048             }
1049             ptbits += nPadding;
1050         }
1051         vImage.SetMaskColour( ucRed
1052                              ,ucGreen
1053                              ,ucBlue
1054                             );
1055         vImage.SetMask(TRUE);
1056     }
1057     else
1058     {
1059         vImage.SetMask(FALSE);
1060     }
1061
1062     //
1063     // Free allocated resources
1064     //
1065     free(lpBits);
1066     return vImage;
1067 } // end of wxBitmap::ConvertToImage
1068
1069 // ----------------------------------------------------------------------------
1070 // sub bitmap extraction
1071 // ----------------------------------------------------------------------------
1072
1073 wxBitmap wxBitmap::GetSubBitmap(
1074   const wxRect&                     rRect
1075 ) const
1076 {
1077     wxCHECK_MSG( Ok() &&
1078                  (rRect.x >= 0) && (rRect.y >= 0) &&
1079                  (rRect.x + rRect.width <= GetWidth()) &&
1080                  (rRect.y + rRect.height <= GetHeight()),
1081                  wxNullBitmap, wxT("Invalid bitmap or bitmap region") );
1082
1083     wxBitmap                        vRet( rRect.width
1084                                          ,rRect.height
1085                                          ,GetDepth()
1086                                         );
1087     wxASSERT_MSG( vRet.Ok(), wxT("GetSubBitmap error") );
1088
1089
1090     //
1091     // Copy bitmap data
1092     //
1093     SIZEL                           vSize = {0, 0};
1094     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1095     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1096     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1097     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1098     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1099     POINTL                          vPoint[4] = { 0, 0, rRect.width, rRect.height,
1100                                                   rRect.x, rRect.y,
1101                                                   rRect.x + rRect.width, rRect.y + rRect.height
1102                                                 };
1103
1104     ::GpiSetBitmap(hPSSrc, (HBITMAP) GetHBITMAP());
1105     ::GpiSetBitmap(hPSDst, (HBITMAP) vRet.GetHBITMAP());
1106     ::GpiBitBlt( hPSDst
1107                 ,hPSSrc
1108                 ,4L
1109                 ,vPoint
1110                 ,ROP_SRCCOPY
1111                 ,BBO_IGNORE
1112                );
1113
1114     //
1115     // Copy mask if there is one
1116     //
1117     if (GetMask())
1118     {
1119         BITMAPINFOHEADER2           vBmih;
1120
1121         memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1122         vBmih.cbFix     = sizeof(BITMAPINFOHEADER2);
1123         vBmih.cx        = rRect.width;
1124         vBmih.cy        = rRect.height;
1125         vBmih.cPlanes   = 1;
1126         vBmih.cBitCount = 24;
1127
1128         HBITMAP                     hBmpMask = ::GpiCreateBitmap( hPSDst
1129                                                                  ,&vBmih
1130                                                                  ,0L
1131                                                                  ,NULL
1132                                                                  ,NULL
1133                                                                 );
1134
1135         ::GpiSetBitmap(hPSSrc, (HBITMAP) GetHBITMAP());
1136         ::GpiSetBitmap(hPSDst, (HBITMAP) vRet.GetHBITMAP());
1137
1138         ::GpiSetBitmap(hPSSrc, (HBITMAP) GetMask()->GetMaskBitmap());
1139         ::GpiSetBitmap(hPSDst, (HBITMAP) hBmpMask);
1140         ::GpiBitBlt( hPSDst
1141                     ,hPSSrc
1142                     ,4L
1143                     ,vPoint
1144                     ,ROP_SRCCOPY
1145                     ,BBO_IGNORE
1146                    );
1147
1148         wxMask*                     pMask = new wxMask((WXHBITMAP)hBmpMask);
1149         vRet.SetMask(pMask);
1150     }
1151
1152     ::GpiSetBitmap(hPSSrc, NULL);
1153     ::GpiSetBitmap(hPSDst, NULL);
1154     ::GpiDestroyPS(hPSSrc);
1155     ::GpiDestroyPS(hPSDst);
1156     ::DevCloseDC(hDCSrc);
1157     ::DevCloseDC(hDCDst);
1158     return vRet;
1159 } // end of wxBitmap::GetSubBitmap
1160
1161 // ----------------------------------------------------------------------------
1162 // wxBitmap accessors
1163 // ----------------------------------------------------------------------------
1164
1165 void wxBitmap::SetQuality(
1166   int                               nQ
1167 )
1168 {
1169     EnsureHasData();
1170
1171     GetBitmapData()->m_nQuality = nQ;
1172 } // end of wxBitmap::SetQuality
1173
1174 #if WXWIN_COMPATIBILITY_2
1175 void wxBitmap::SetOk(
1176   bool                              bOk
1177 )
1178 {
1179     EnsureHasData();
1180
1181     GetBitmapData()->m_bOk = bOk;
1182 } // end of wxBitmap::SetOk
1183 #endif // WXWIN_COMPATIBILITY_2
1184
1185 void wxBitmap::SetPalette(
1186   const wxPalette&                  rPalette
1187 )
1188 {
1189     EnsureHasData();
1190
1191     GetBitmapData()->m_vBitmapPalette = rPalette;
1192 } // end of wxBitmap::SetPalette
1193
1194 void wxBitmap::SetMask(
1195   wxMask*                           pMask
1196 )
1197 {
1198     EnsureHasData();
1199
1200     GetBitmapData()->m_pBitmapMask = pMask;
1201 } // end of wxBitmap::SetMask
1202
1203 wxBitmap wxBitmap::GetBitmapForDC(
1204   wxDC&                             rDc
1205 ) const
1206 {
1207     return(*this);
1208 } // end of wxBitmap::GetBitmapForDC
1209
1210 // ----------------------------------------------------------------------------
1211 // wxMask
1212 // ----------------------------------------------------------------------------
1213
1214 wxMask::wxMask()
1215 {
1216     m_hMaskBitmap = 0;
1217 } // end of wxMask::wxMask
1218
1219 // Construct a mask from a bitmap and a colour indicating
1220 // the transparent area
1221 wxMask::wxMask(
1222   const wxBitmap&                   rBitmap
1223 , const wxColour&                   rColour
1224 )
1225 {
1226     m_hMaskBitmap = 0;
1227     Create( rBitmap
1228            ,rColour
1229           );
1230 } // end of wxMask::wxMask
1231
1232 // Construct a mask from a bitmap and a palette index indicating
1233 // the transparent area
1234 wxMask::wxMask(
1235   const wxBitmap&                   rBitmap
1236 , int                               nPaletteIndex
1237 )
1238 {
1239     m_hMaskBitmap = 0;
1240     Create( rBitmap
1241            ,nPaletteIndex
1242           );
1243 } // end of wxMask::wxMask
1244
1245 // Construct a mask from a mono bitmap (copies the bitmap).
1246 wxMask::wxMask(
1247   const wxBitmap&                   rBitmap
1248 )
1249 {
1250     m_hMaskBitmap = 0;
1251     Create(rBitmap);
1252 } // end of wxMask::wxMask
1253
1254 wxMask::~wxMask()
1255 {
1256     if (m_hMaskBitmap)
1257         ::GpiDeleteBitmap((HBITMAP)m_hMaskBitmap);
1258 } // end of wxMask::~wxMask
1259
1260 // Create a mask from a mono bitmap (copies the bitmap).
1261 bool wxMask::Create(
1262   const wxBitmap&                   rBitmap
1263 )
1264 {
1265     BITMAPINFOHEADER2               vBmih;
1266     SIZEL                           vSize = {0, 0};
1267     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1268     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1269     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1270     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1271     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1272     POINTL                          vPoint[4] = { 0 ,0, rBitmap.GetWidth(), rBitmap.GetHeight(),
1273                                                   0, 0, rBitmap.GetWidth(), rBitmap.GetHeight()
1274                                                 };
1275
1276     if (m_hMaskBitmap)
1277     {
1278         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1279         m_hMaskBitmap = 0;
1280     }
1281     if (!rBitmap.Ok() || rBitmap.GetDepth() != 1)
1282     {
1283         return(FALSE);
1284     }
1285
1286     memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1287     vBmih.cbFix     =  sizeof(BITMAPINFOHEADER2);
1288     vBmih.cx        = rBitmap.GetWidth();
1289     vBmih.cy        = rBitmap.GetHeight();
1290     vBmih.cPlanes   = 1;
1291     vBmih.cBitCount = 24;
1292
1293     m_hMaskBitmap = ::GpiCreateBitmap( hPSDst
1294                                       ,&vBmih
1295                                       ,0L
1296                                       ,NULL
1297                                       ,NULL
1298                                      );
1299
1300     ::GpiSetBitmap(hPSSrc, (HBITMAP) rBitmap.GetHBITMAP());
1301     ::GpiSetBitmap(hPSDst, (HBITMAP) m_hMaskBitmap);
1302     ::GpiBitBlt( hPSDst
1303                 ,hPSSrc
1304                 ,4L
1305                 ,vPoint
1306                 ,ROP_SRCCOPY
1307                 ,BBO_IGNORE
1308                );
1309
1310     ::GpiDestroyPS(hPSSrc);
1311     ::GpiDestroyPS(hPSDst);
1312     ::DevCloseDC(hDCSrc);
1313     ::DevCloseDC(hDCDst);
1314     return(TRUE);
1315 } // end of wxMask::Create
1316
1317 // Create a mask from a bitmap and a palette index indicating
1318 // the transparent area
1319 bool wxMask::Create(
1320   const wxBitmap&                   rBitmap
1321 , int                               nPaletteIndex
1322 )
1323 {
1324     if (m_hMaskBitmap)
1325     {
1326         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1327         m_hMaskBitmap = 0;
1328     }
1329     if (rBitmap.Ok() && rBitmap.GetPalette()->Ok())
1330     {
1331         unsigned char               cRed;
1332         unsigned char               cGreen;
1333         unsigned char               cBlue;
1334
1335         if (rBitmap.GetPalette()->GetRGB( nPaletteIndex
1336                                          ,&cRed
1337                                          ,&cGreen
1338                                          ,&cBlue
1339                                         ))
1340         {
1341             wxColour                vTransparentColour( cRed
1342                                                        ,cGreen
1343                                                        ,cBlue
1344                                                       );
1345
1346             return (Create( rBitmap
1347                            ,vTransparentColour
1348                           ));
1349         }
1350     }
1351     return(FALSE);
1352 } // end of wxMask::Create
1353
1354 // Create a mask from a bitmap and a colour indicating
1355 // the transparent area
1356 bool wxMask::Create(
1357   const wxBitmap&                   rBitmap
1358 , const wxColour&                   rColour
1359 )
1360 {
1361     bool                            bOk = TRUE;
1362     COLORREF                        vMaskColour = OS2RGB( rColour.Red()
1363                                                          ,rColour.Green()
1364                                                          ,rColour.Blue()
1365                                                         );
1366     BITMAPINFOHEADER2               vBmih;
1367     SIZEL                           vSize = {0, 0};
1368     DEVOPENSTRUC                    vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
1369     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1370     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1371     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1372     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1373     POINTL                          vPoint[4] = { 0 ,0, rBitmap.GetWidth(), rBitmap.GetHeight(),
1374                                                   0, 0, rBitmap.GetWidth(), rBitmap.GetHeight()
1375                                                 };
1376
1377     if (m_hMaskBitmap)
1378     {
1379         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1380         m_hMaskBitmap = 0;
1381     }
1382     if (!rBitmap.Ok())
1383     {
1384         return(FALSE);
1385     }
1386
1387     //
1388     // Scan the bitmap for the transparent colour and set
1389     // the corresponding pixels in the mask to BLACK and
1390     // the rest to WHITE
1391     //
1392
1393     memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1394     vBmih.cbFix     =  sizeof(BITMAPINFOHEADER2);
1395     vBmih.cx        = rBitmap.GetWidth();
1396     vBmih.cy        = rBitmap.GetHeight();
1397     vBmih.cPlanes   = 1;
1398     vBmih.cBitCount = 1;
1399
1400     m_hMaskBitmap = ::GpiCreateBitmap( hPSDst
1401                                       ,&vBmih
1402                                       ,0L
1403                                       ,NULL
1404                                       ,NULL
1405                                      );
1406
1407     ::GpiSetBitmap(hPSSrc, (HBITMAP) rBitmap.GetHBITMAP());
1408     ::GpiSetBitmap(hPSDst, (HBITMAP) m_hMaskBitmap);
1409
1410     //
1411     // This is not very efficient, but I can't think
1412     // of a better way of doing it
1413     //
1414     for (int w = 0; w < rBitmap.GetWidth(); w++)
1415     {
1416         for (int h = 0; h < rBitmap.GetHeight(); h++)
1417         {
1418             POINTL                  vPt = {w, h};
1419             COLORREF                vCol = (COLORREF)::GpiQueryPel(hPSSrc, &vPt);
1420             if (vCol == (COLORREF)CLR_NOINDEX)
1421             {
1422                 //
1423                 // Doesn't make sense to continue
1424                 //
1425                 bOk = FALSE;
1426                 break;
1427             }
1428
1429             if (vCol == vMaskColour)
1430             {
1431                 ::GpiSetColor(hPSDst, OS2RGB(0, 0, 0));
1432                 ::GpiSetPel(hPSDst, &vPt);
1433             }
1434             else
1435             {
1436                 ::GpiSetColor(hPSDst, OS2RGB(255, 255, 255));
1437                 ::GpiSetPel(hPSDst, &vPt);
1438             }
1439         }
1440     }
1441     ::GpiSetBitmap(hPSSrc, NULL);
1442     ::GpiSetBitmap(hPSDst, NULL);
1443     ::GpiDestroyPS(hPSSrc);
1444     ::GpiDestroyPS(hPSDst);
1445     ::DevCloseDC(hDCSrc);
1446     ::DevCloseDC(hDCDst);
1447     return(TRUE);
1448 } // end of wxMask::Create
1449
1450 // ----------------------------------------------------------------------------
1451 // wxBitmapHandler
1452 // ----------------------------------------------------------------------------
1453
1454 bool wxBitmapHandler::Create(
1455   wxGDIImage*                       pImage
1456 , void*                             pData
1457 , long                              lFlags
1458 , int                               nWidth
1459 , int                               nHeight
1460 , int                               nDepth
1461 )
1462 {
1463     wxBitmap*                       pBitmap = wxDynamicCast( pImage
1464                                                             ,wxBitmap
1465                                                            );
1466
1467     return(pBitmap ? Create( pBitmap
1468                             ,pData
1469                             ,nWidth
1470                             ,nHeight
1471                             ,nDepth
1472                            ) : FALSE);
1473 }
1474
1475 bool wxBitmapHandler::Load(
1476   wxGDIImage*                       pImage
1477 , int                               nId
1478 , long                              lFlags
1479 , int                               nWidth
1480 , int                               nHeight
1481 )
1482 {
1483     wxBitmap*                       pBitmap = wxDynamicCast( pImage
1484                                                             ,wxBitmap
1485                                                            );
1486
1487     return(pBitmap ? LoadFile( pBitmap
1488                               ,nId
1489                               ,lFlags
1490                               ,nWidth
1491                               ,nHeight
1492                              ) : FALSE);
1493 }
1494
1495 bool wxBitmapHandler::Save(
1496   wxGDIImage*                       pImage
1497 , const wxString&                   rName
1498 , int                               lType
1499 )
1500 {
1501     wxBitmap*                       pBitmap = wxDynamicCast( pImage
1502                                                             ,wxBitmap
1503                                                            );
1504
1505     return(pBitmap ? SaveFile( pBitmap
1506                               ,rName
1507                               ,lType
1508                              ) : FALSE);
1509 }
1510
1511 bool wxBitmapHandler::Create(
1512   wxBitmap*                         WXUNUSED(pBitmap)
1513 , void*                             WXUNUSED(pData)
1514 , long                              WXUNUSED(lType)
1515 , int                               WXUNUSED(nWidth)
1516 , int                               WXUNUSED(nHeight)
1517 , int                               WXUNUSED(nDepth)
1518 )
1519 {
1520     return(FALSE);
1521 }
1522
1523 bool wxBitmapHandler::LoadFile(
1524   wxBitmap*                         WXUNUSED(pBitmap)
1525 , int                               WXUNUSED(nId)
1526 , long                              WXUNUSED(lType)
1527 , int                               WXUNUSED(nDesiredWidth)
1528 , int                               WXUNUSED(nDesiredHeight)
1529 )
1530 {
1531     return(FALSE);
1532 }
1533
1534 bool wxBitmapHandler::SaveFile(
1535   wxBitmap*                         WXUNUSED(pBitmap)
1536 , const wxString&                   WXUNUSED(rName)
1537 , int                               WXUNUSED(nType)
1538 , const wxPalette*                  WXUNUSED(pPalette)
1539 )
1540 {
1541     return(FALSE);
1542 }
1543
1544 // ----------------------------------------------------------------------------
1545 // Utility functions
1546 // ----------------------------------------------------------------------------
1547 HBITMAP wxInvertMask(
1548   HBITMAP                           hBmpMask
1549 , int                               nWidth
1550 , int                               nHeight
1551 )
1552 {
1553     HBITMAP                         hBmpInvMask = 0;
1554
1555     wxCHECK_MSG( hBmpMask, 0, _T("invalid bitmap in wxInvertMask") );
1556
1557     //
1558     // Get width/height from the bitmap if not given
1559     //
1560     if (!nWidth || !nHeight)
1561     {
1562         BITMAPINFOHEADER2           vBmhdr;
1563
1564         ::GpiQueryBitmapInfoHeader( hBmpMask
1565                                    ,&vBmhdr
1566                                   );
1567         nWidth  = (int)vBmhdr.cx;
1568         nHeight = (int)vBmhdr.cy;
1569     }
1570
1571     BITMAPINFOHEADER2               vBmih;
1572     SIZEL                           vSize = {0, 0};
1573     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1574     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1575     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1576     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1577     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1578     POINTL                          vPoint[4] = { 0 ,0, nWidth, nHeight,
1579                                                   0, 0, nWidth, nHeight
1580                                                 };
1581
1582     memset(&vBmih, '\0', 16);
1583     vBmih.cbFix     = 16;
1584     vBmih.cx        = nWidth;
1585     vBmih.cy        = nHeight;
1586     vBmih.cPlanes   = 1;
1587     vBmih.cBitCount = 24;
1588
1589     hBmpInvMask = ::GpiCreateBitmap( hPSDst
1590                                     ,&vBmih
1591                                     ,0L
1592                                     ,NULL
1593                                     ,NULL
1594                                    );
1595
1596     ::GpiSetBitmap(hPSSrc, (HBITMAP) hBmpMask);
1597     ::GpiSetBitmap(hPSDst, (HBITMAP) hBmpInvMask);
1598
1599     ::GpiBitBlt( hPSDst
1600                 ,hPSSrc
1601                 ,4L
1602                 ,vPoint
1603                 ,ROP_SRCINVERT
1604                 ,BBO_IGNORE
1605                );
1606
1607     ::GpiDestroyPS(hPSSrc);
1608     ::GpiDestroyPS(hPSDst);
1609     ::DevCloseDC(hDCSrc);
1610     ::DevCloseDC(hDCDst);
1611
1612     return hBmpInvMask;
1613 } // end of WxWinGdi_InvertMask
1614