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     // m_refData = NULL; done in the base class ctor
  89
  90     if (wxTheBitmapList)
  91         wxTheBitmapList->AddBitmap(this);
  92 } // end of wxBitmap::Init
  93
  94 bool wxBitmap::CopyFromIconOrCursor(
  95   const wxGDIImage&                 rIcon
  96 )
  97 {
  98     HPOINTER                        hIcon = (HPOINTER)rIcon.GetHandle();
  99     POINTERINFO                     SIconInfo;
 100
 101     if (!::WinQueryPointerInfo(hIcon, &SIconInfo))
 102     {
 103         wxLogLastError(wxT("WinQueryPointerInfo"));
 104         return FALSE;
 105     }
 106     wxBitmapRefData*                pRefData = new wxBitmapRefData;
 107
 108     m_refData = pRefData;
 109
 110     int                             nWidth = rIcon.GetWidth();
 111     int                             nHeight = rIcon.GetHeight();
 112
 113     pRefData->m_nWidth  = nWidth;
 114     pRefData->m_nHeight = nHeight;
 115     pRefData->m_nDepth  = wxDisplayDepth();
 116
 117     pRefData->m_hBitmap = (WXHBITMAP)SIconInfo.hbmColor;
 118
 119     //
 120     // No mask in the Info struct in OS/2
 121     //
 122     return(TRUE);
 123 } // end of wxBitmap::CopyFromIconOrCursor
 124
 125 bool wxBitmap::CopyFromCursor(
 126   const wxCursor&                   rCursor
 127 )
 128 {
 129     UnRef();
 130
 131     if (!rCursor.Ok())
 132         return(FALSE);
 133     return(CopyFromIconOrCursor(rCursor));
 134 } // end of wxBitmap::CopyFromCursor
 135
 136 bool wxBitmap::CopyFromIcon(
 137   const wxIcon&                     rIcon
 138 )
 139 {
 140     UnRef();
 141
 142     if (!rIcon.Ok())
 143         return(FALSE);
 144
 145     return CopyFromIconOrCursor(rIcon);
 146 } // end of wxBitmap::CopyFromIcon
 147
 148 wxBitmap::~wxBitmap()
 149 {
 150     if (wxTheBitmapList)
 151         wxTheBitmapList->DeleteObject(this);
 152 } // end of wxBitmap::~wxBitmap
 153
 154 wxBitmap::wxBitmap(
 155   const char                        zBits[]
 156 , int                               nTheWidth
 157 , int                               nTheHeight
 158 , int                               nNoBits
 159 )
 160 {
 161     Init();
 162
 163     wxBitmapRefData*                pRefData = new wxBitmapRefData;
 164     BITMAPINFOHEADER2               vHeader;
 165     BITMAPINFO2                     vInfo;
 166     HDC                             hDc;
 167     HPS                             hPs;
 168     DEVOPENSTRUC                    vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
 169     SIZEL                           vSize = {0, 0};
 170
 171     wxASSERT(vHabmain != NULL);
 172
 173     hDc = ::DevOpenDC(vHabmain, OD_MEMORY, (PSZ)"*", 1L, (PDEVOPENDATA)&vDop, 0L);
 174
 175     vHeader.cbFix           = sizeof(vHeader);
 176     vHeader.cx              = (USHORT)nTheWidth;
 177     vHeader.cy              = (USHORT)nTheHeight;
 178     vHeader.cPlanes         = 1L;
 179     vHeader.cBitCount       = nNoBits;
 180     vHeader.ulCompression   = BCA_UNCOMP;
 181     vHeader.cxResolution    = 0;
 182     vHeader.cyResolution    = 0;
 183     vHeader.cclrUsed        = 0;
 184     vHeader.cclrImportant   = 0;
 185     vHeader.usUnits         = BRU_METRIC;
 186     vHeader.usRecording     = BRA_BOTTOMUP;
 187     vHeader.usRendering     = BRH_NOTHALFTONED;
 188     vHeader.cSize1          = 0;
 189     vHeader.cSize2          = 0;
 190     vHeader.ulColorEncoding = 0;
 191     vHeader.ulIdentifier    = 0;
 192
 193     hPs = ::GpiCreatePS(vHabmain, hDc, &vSize, GPIA_ASSOC | PU_PELS);
 194     if (hPs == 0)
 195     {
 196         wxLogLastError("GpiCreatePS Failure");
 197     }
 198
 199     m_refData = pRefData;
 200
 201     pRefData->m_nWidth = nTheWidth;
 202     pRefData->m_nHeight = nTheHeight;
 203     pRefData->m_nDepth = nNoBits;
 204     pRefData->m_nNumColors = 0;
 205     pRefData->m_pSelectedInto = NULL;
 206
 207     HBITMAP hBmp = ::GpiCreateBitmap(hPs, &vHeader, 0L, NULL, &vInfo);
 208     if (!hBmp)
 209     {
 210         wxLogLastError("CreateBitmap");
 211     }
 212     SetHBITMAP((WXHBITMAP)hBmp);
 213 } // end of wxBitmap::wxBitmap
 214
 215 wxBitmap::wxBitmap(
 216   int                               nW
 217 , int                               nH
 218 , int                               nD
 219 )
 220 {
 221     Init();
 222
 223     (void)Create( nW
 224                  ,nH
 225                  ,nD
 226                 );
 227 } // end of wxBitmap::wxBitmap
 228
 229 wxBitmap::wxBitmap(
 230   void*                             pData
 231 , long                              lType
 232 , int                               nWidth
 233 , int                               nHeight
 234 , int                               nDepth
 235 )
 236 {
 237     Init();
 238
 239     (void)Create( pData
 240                  ,lType
 241                  ,nWidth
 242                  ,nHeight
 243                  ,nDepth
 244                 );
 245 } // end of wxBitmap::wxBitmap
 246
 247 wxBitmap::wxBitmap(
 248   const wxString&                   rFilename
 249 , long                              lType
 250 )
 251 {
 252     Init();
 253
 254     LoadFile( rFilename
 255              ,(int)lType
 256             );
 257 } // end of wxBitmap::wxBitmap
 258
 259 bool wxBitmap::Create(
 260   int                               nW
 261 , int                               nH
 262 , int                               nD
 263 )
 264 {
 265     HBITMAP                         hBmp;
 266     BITMAPINFOHEADER2               vHeader;
 267
 268     wxASSERT(vHabmain != NULL);
 269     UnRef();
 270     m_refData = new wxBitmapRefData;
 271     GetBitmapData()->m_nWidth = nW;
 272     GetBitmapData()->m_nHeight = nH;
 273     GetBitmapData()->m_nDepth = nD;
 274
 275     if (nD > 0)
 276     {
 277         DEVOPENSTRUC                vDop  = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
 278         SIZEL                       vSize = {0, 0};
 279         HDC                         hDC   = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
 280         HPS                         hPS   = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
 281
 282         memset(&vHeader, '\0', sizeof(BITMAPINFOHEADER2));
 283         vHeader.cbFix     =  sizeof(BITMAPINFOHEADER2);
 284         vHeader.cx        = nW;
 285         vHeader.cy        = nH;
 286         vHeader.cPlanes   = 1;
 287         vHeader.cBitCount = nD;
 288
 289         hBmp = ::GpiCreateBitmap( hPS
 290                                  ,&vHeader
 291                                  ,0L
 292                                  ,NULL
 293                                  ,NULL
 294                                 );
 295         ::GpiDestroyPS(hPS);
 296         ::DevCloseDC(hDC);
 297     }
 298     else
 299     {
 300         HPS                             hPSScreen;
 301         HDC                             hDCScreen;
 302         LONG                            lBitCount;
 303
 304         hPSScreen = ::WinGetScreenPS(HWND_DESKTOP);
 305         hDCScreen = ::GpiQueryDevice(hPSScreen);
 306         ::DevQueryCaps(hDCScreen, CAPS_COLOR_BITCOUNT, 1L, &lBitCount);
 307
 308         memset(&vHeader, '\0', sizeof(BITMAPINFOHEADER2));
 309         vHeader.cbFix     =  sizeof(BITMAPINFOHEADER2);
 310         vHeader.cx        = nW;
 311         vHeader.cy        = nH;
 312         vHeader.cPlanes   = 1;
 313         vHeader.cBitCount = lBitCount;
 314
 315         hBmp = ::GpiCreateBitmap( hPSScreen
 316                                  ,&vHeader
 317                                  ,0L
 318                                  ,NULL
 319                                  ,NULL
 320                                 );
 321
 322         GetBitmapData()->m_nDepth = wxDisplayDepth();
 323         ::WinReleasePS(hPSScreen);
 324     }
 325     SetHBITMAP((WXHBITMAP)hBmp);
 326
 327 #if WXWIN_COMPATIBILITY_2
 328     GetBitmapData()->m_bOk = hBmp != 0;
 329 #endif // WXWIN_COMPATIBILITY_2
 330
 331     return Ok();
 332 } // end of wxBitmap::Create
 333
 334 bool wxBitmap::CreateFromXpm(
 335   const char**                      ppData
 336 )
 337 {
 338 #if wxUSE_IMAGE && wxUSE_XPM
 339     Init();
 340
 341     wxCHECK_MSG(ppData != NULL, FALSE, wxT("invalid bitmap data"))
 342
 343     wxXPMDecoder                    vDecoder;
 344     wxImage                         vImg = vDecoder.ReadData(ppData);
 345
 346     wxCHECK_MSG(vImg.Ok(), FALSE, wxT("invalid bitmap data"))
 347
 348     *this = wxBitmap(vImg);
 349     return TRUE;
 350 #else
 351     return FALSE;
 352 #endif
 353 } // end of wxBitmap::CreateFromXpm
 354
 355 bool wxBitmap::LoadFile(
 356   const wxString&                   rFilename
 357 , long                              lType
 358 )
 359 {
 360     HPS                             hPs = NULLHANDLE;
 361
 362     UnRef();
 363
 364     wxBitmapHandler*                pHandler = wxDynamicCast( FindHandler(lType)
 365                                                              ,wxBitmapHandler
 366                                                             );
 367
 368     if (pHandler)
 369     {
 370         m_refData = new wxBitmapRefData;
 371
 372         return(pHandler->LoadFile( this
 373                                   ,rFilename
 374                                   ,hPs
 375                                   ,lType
 376                                   , -1
 377                                   , -1
 378                                  ));
 379     }
 380     else
 381     {
 382         wxImage                     vImage;
 383
 384         if (!vImage.LoadFile(rFilename, lType) || !vImage.Ok() )
 385             return(FALSE);
 386
 387         *this = wxBitmap(vImage);
 388
 389         return(TRUE);
 390     }
 391 } // end of wxBitmap::LoadFile
 392
 393 bool wxBitmap::Create(
 394   void*                             pData
 395 , long                              lType
 396 , int                               nWidth
 397 , int                               nHeight
 398 , int                               nDepth
 399 )
 400 {
 401     UnRef();
 402
 403     wxBitmapHandler*                pHandler = wxDynamicCast( FindHandler(lType)
 404                                                              ,wxBitmapHandler
 405                                                             );
 406
 407     if (!pHandler)
 408     {
 409         wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for "
 410                        "type %d defined."), lType);
 411
 412         return(FALSE);
 413     }
 414
 415     m_refData = new wxBitmapRefData;
 416
 417     return(pHandler->Create( this
 418                             ,pData
 419                             ,lType
 420                             ,nWidth
 421                             ,nHeight
 422                             ,nDepth
 423                            ));
 424 } // end of wxBitmap::Create
 425
 426 bool wxBitmap::SaveFile(
 427   const wxString&                   rFilename
 428 , int                               lType
 429 , const wxPalette*                  pPalette
 430 )
 431 {
 432     wxBitmapHandler*                pHandler = wxDynamicCast( FindHandler(lType)
 433                                                              ,wxBitmapHandler
 434                                                             );
 435
 436     if (pHandler)
 437     {
 438         return pHandler->SaveFile( this
 439                                   ,rFilename
 440                                   ,lType
 441                                   ,pPalette
 442                                  );
 443     }
 444     else
 445     {
 446         // FIXME what about palette? shouldn't we use it?
 447         wxImage                     vImage = ConvertToImage();
 448
 449         if (!vImage.Ok())
 450             return(FALSE);
 451
 452         return(vImage.SaveFile( rFilename
 453                                ,lType
 454                               ));
 455     }
 456 } // end of wxBitmap::SaveFile
 457
 458
 459 // ----------------------------------------------------------------------------
 460 // wxImage-wxBitmap convertion
 461 // ----------------------------------------------------------------------------
 462
 463 bool wxBitmap::CreateFromImage( const wxImage& image, int depth )
 464 {
 465     wxCHECK_MSG( image.Ok(), FALSE, wxT("invalid image") )
 466
 467 // TODO:
 468 /*
 469     int sizeLimit = 1024*768*3;
 470
 471     // width and height of the device-dependent bitmap
 472     int width = GetWidth();
 473     int bmpHeight = GetHeight();
 474
 475     // calc the number of bytes per scanline and padding
 476     int bytePerLine = width*3;
 477     int sizeDWORD = sizeof( DWORD );
 478     int lineBoundary = bytePerLine % sizeDWORD;
 479     int padding = 0;
 480     if( lineBoundary > 0 )
 481     {
 482         padding = sizeDWORD - lineBoundary;
 483         bytePerLine += padding;
 484     }
 485     // calc the number of DIBs and heights of DIBs
 486     int numDIB = 1;
 487     int hRemain = 0;
 488     int height = sizeLimit/bytePerLine;
 489     if( height >= bmpHeight )
 490         height = bmpHeight;
 491     else
 492     {
 493         numDIB =  bmpHeight / height;
 494         hRemain = bmpHeight % height;
 495         if( hRemain >0 )  numDIB++;
 496     }
 497
 498     // set bitmap parameters
 499     wxBitmap bitmap;
 500     wxCHECK_MSG( Ok(), bitmap, wxT("invalid image") );
 501     bitmap.SetWidth( width );
 502     bitmap.SetHeight( bmpHeight );
 503     bitmap.SetDepth( wxDisplayDepth() );
 504
 505     // create a DIB header
 506     int headersize = sizeof(BITMAPINFOHEADER);
 507     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 508     wxCHECK_MSG( lpDIBh, bitmap, wxT("could not allocate memory for DIB header") );
 509     // Fill in the DIB header
 510     lpDIBh->bmiHeader.biSize = headersize;
 511     lpDIBh->bmiHeader.biWidth = (DWORD)width;
 512     lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 513     lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 514     //   the general formula for biSizeImage:
 515     //      ( ( ( ((DWORD)width*24) +31 ) & ~31 ) >> 3 ) * height;
 516     lpDIBh->bmiHeader.biPlanes = 1;
 517     lpDIBh->bmiHeader.biBitCount = 24;
 518     lpDIBh->bmiHeader.biCompression = BI_RGB;
 519     lpDIBh->bmiHeader.biClrUsed = 0;
 520     // These seem not really needed for our purpose here.
 521     lpDIBh->bmiHeader.biClrImportant = 0;
 522     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 523     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
 524     // memory for DIB data
 525     unsigned char *lpBits;
 526     lpBits = (unsigned char *)malloc( lpDIBh->bmiHeader.biSizeImage );
 527     if( !lpBits )
 528     {
 529         wxFAIL_MSG( wxT("could not allocate memory for DIB") );
 530         free( lpDIBh );
 531         return bitmap;
 532     }
 533
 534     // create and set the device-dependent bitmap
 535     HDC hdc = ::GetDC(NULL);
 536     HDC memdc = ::CreateCompatibleDC( hdc );
 537     HBITMAP hbitmap;
 538     hbitmap = ::CreateCompatibleBitmap( hdc, width, bmpHeight );
 539     ::SelectObject( memdc, hbitmap);
 540
 541     // copy image data into DIB data and then into DDB (in a loop)
 542     unsigned char *data = GetData();
 543     int i, j, n;
 544     int origin = 0;
 545     unsigned char *ptdata = data;
 546     unsigned char *ptbits;
 547
 548     for( n=0; n<numDIB; n++ )
 549     {
 550         if( numDIB > 1 && n == numDIB-1 && hRemain > 0 )
 551         {
 552             // redefine height and size of the (possibly) last smaller DIB
 553             // memory is not reallocated
 554             height = hRemain;
 555             lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 556             lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 557         }
 558         ptbits = lpBits;
 559
 560         for( j=0; j<height; j++ )
 561         {
 562             for( i=0; i<width; i++ )
 563             {
 564                 *(ptbits++) = *(ptdata+2);
 565                 *(ptbits++) = *(ptdata+1);
 566                 *(ptbits++) = *(ptdata  );
 567                 ptdata += 3;
 568             }
 569             for( i=0; i< padding; i++ )   *(ptbits++) = 0;
 570         }
 571         ::StretchDIBits( memdc, 0, origin, width, height,\
 572             0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
 573         origin += height;
 574         // if numDIB = 1,  lines below can also be used
 575         //    hbitmap = CreateDIBitmap( hdc, &(lpDIBh->bmiHeader), CBM_INIT, lpBits, lpDIBh, DIB_RGB_COLORS );
 576         // The above line is equivalent to the following two lines.
 577         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
 578         //    ::SetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS);
 579         // or the following lines
 580         //    hbitmap = ::CreateCompatibleBitmap( hdc, width, height );
 581         //    HDC memdc = ::CreateCompatibleDC( hdc );
 582         //    ::SelectObject( memdc, hbitmap);
 583         //    ::SetDIBitsToDevice( memdc, 0, 0, width, height,
 584         //            0, 0, 0, height, (void *)lpBits, lpDIBh, DIB_RGB_COLORS);
 585         //    ::SelectObject( memdc, 0 );
 586         //    ::DeleteDC( memdc );
 587     }
 588     bitmap.SetHBITMAP( (WXHBITMAP) hbitmap );
 589
 590     // similarly, created an mono-bitmap for the possible mask
 591     if( HasMask() )
 592     {
 593         hbitmap = ::CreateBitmap( (WORD)width, (WORD)bmpHeight, 1, 1, NULL );
 594         ::SelectObject( memdc, hbitmap);
 595         if( numDIB == 1 )   height = bmpHeight;
 596         else                height = sizeLimit/bytePerLine;
 597         lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 598         lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 599         origin = 0;
 600         unsigned char r = GetMaskRed();
 601         unsigned char g = GetMaskGreen();
 602         unsigned char b = GetMaskBlue();
 603         unsigned char zero = 0, one = 255;
 604         ptdata = data;
 605         for( n=0; n<numDIB; n++ )
 606         {
 607             if( numDIB > 1 && n == numDIB - 1 && hRemain > 0 )
 608             {
 609                 // redefine height and size of the (possibly) last smaller DIB
 610                 // memory is not reallocated
 611                 height = hRemain;
 612                 lpDIBh->bmiHeader.biHeight = (DWORD)(-height);
 613                 lpDIBh->bmiHeader.biSizeImage = bytePerLine*height;
 614             }
 615             ptbits = lpBits;
 616             for( int j=0; j<height; j++ )
 617             {
 618                 for(i=0; i<width; i++ )
 619                 {
 620                     if( (*(ptdata++)!=r) | (*(ptdata++)!=g) | (*(ptdata++)!=b) )
 621                     {
 622                         *(ptbits++) = one;
 623                         *(ptbits++) = one;
 624                         *(ptbits++) = one;
 625                     }
 626                     else
 627                     {
 628                         *(ptbits++) = zero;
 629                         *(ptbits++) = zero;
 630                         *(ptbits++) = zero;
 631                     }
 632                 }
 633                 for( i=0; i< padding; i++ )   *(ptbits++) = zero;
 634             }
 635             ::StretchDIBits( memdc, 0, origin, width, height,\
 636                 0, 0, width, height, lpBits, lpDIBh, DIB_RGB_COLORS, SRCCOPY);
 637             origin += height;
 638         }
 639         // create a wxMask object
 640         wxMask *mask = new wxMask();
 641         mask->SetMaskBitmap( (WXHBITMAP) hbitmap );
 642         bitmap.SetMask( mask );
 643     }
 644
 645     // free allocated resources
 646     ::SelectObject( memdc, 0 );
 647     ::DeleteDC( memdc );
 648     ::ReleaseDC(NULL, hdc);
 649     free(lpDIBh);
 650     free(lpBits);
 651
 652     // check the wxBitmap object
 653     if( bitmap.GetHBITMAP() )
 654         bitmap.SetOk( TRUE );
 655     else
 656         bitmap.SetOk( FALSE );
 657 */
 658
 659     return TRUE;
 660 }
 661
 662 wxImage wxBitmap::ConvertToImage() const
 663 {
 664     wxImage image;
 665
 666     wxCHECK_MSG( Ok(), wxNullImage, wxT("invalid bitmap") );
 667
 668     // create an wxImage object
 669     int width = GetWidth();
 670     int height = GetHeight();
 671     image.Create( width, height );
 672     unsigned char *data = image.GetData();
 673     if( !data )
 674     {
 675         wxFAIL_MSG( wxT("could not allocate data for image") );
 676         return wxNullImage;
 677     }
 678
 679     // calc the number of bytes per scanline and padding in the DIB
 680     int bytePerLine = width*3;
 681     int sizeDWORD = sizeof( DWORD );
 682     int lineBoundary =  bytePerLine % sizeDWORD;
 683     int padding = 0;
 684     if( lineBoundary > 0 )
 685     {
 686         padding = sizeDWORD - lineBoundary;
 687         bytePerLine += padding;
 688     }
 689 // TODO:
 690 /*
 691     // create a DIB header
 692     int headersize = sizeof(BITMAPINFOHEADER);
 693     LPBITMAPINFO lpDIBh = (BITMAPINFO *) malloc( headersize );
 694     if( !lpDIBh )
 695     {
 696         wxFAIL_MSG( wxT("could not allocate data for DIB header") );
 697         free( data );
 698         return;
 699     }
 700     // Fill in the DIB header
 701     lpDIBh->bmiHeader.biSize = headersize;
 702     lpDIBh->bmiHeader.biWidth = width;
 703     lpDIBh->bmiHeader.biHeight = -height;
 704     lpDIBh->bmiHeader.biSizeImage = bytePerLine * height;
 705     lpDIBh->bmiHeader.biPlanes = 1;
 706     lpDIBh->bmiHeader.biBitCount = 24;
 707     lpDIBh->bmiHeader.biCompression = BI_RGB;
 708     lpDIBh->bmiHeader.biClrUsed = 0;
 709     // These seem not really needed for our purpose here.
 710     lpDIBh->bmiHeader.biClrImportant = 0;
 711     lpDIBh->bmiHeader.biXPelsPerMeter = 0;
 712     lpDIBh->bmiHeader.biYPelsPerMeter = 0;
 713     // memory for DIB data
 714     unsigned char *lpBits;
 715     lpBits = (unsigned char *) malloc( lpDIBh->bmiHeader.biSizeImage );
 716     if( !lpBits )
 717     {
 718         wxFAIL_MSG( wxT("could not allocate data for DIB") );
 719         free( data );
 720         free( lpDIBh );
 721         return;
 722     }
 723
 724     // copy data from the device-dependent bitmap to the DIB
 725     HDC hdc = ::GetDC(NULL);
 726     HBITMAP hbitmap;
 727     hbitmap = (HBITMAP) bitmap.GetHBITMAP();
 728     ::GetDIBits( hdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
 729
 730     // copy DIB data into the wxImage object
 731     int i, j;
 732     unsigned char *ptdata = data;
 733     unsigned char *ptbits = lpBits;
 734     for( i=0; i<height; i++ )
 735     {
 736         for( j=0; j<width; j++ )
 737         {
 738             *(ptdata++) = *(ptbits+2);
 739             *(ptdata++) = *(ptbits+1);
 740             *(ptdata++) = *(ptbits  );
 741             ptbits += 3;
 742         }
 743         ptbits += padding;
 744     }
 745
 746     // similarly, set data according to the possible mask bitmap
 747     if( bitmap.GetMask() && bitmap.GetMask()->GetMaskBitmap() )
 748     {
 749         hbitmap = (HBITMAP) bitmap.GetMask()->GetMaskBitmap();
 750         // memory DC created, color set, data copied, and memory DC deleted
 751         HDC memdc = ::CreateCompatibleDC( hdc );
 752         ::SetTextColor( memdc, RGB( 0, 0, 0 ) );
 753         ::SetBkColor( memdc, RGB( 255, 255, 255 ) );
 754         ::GetDIBits( memdc, hbitmap, 0, height, lpBits, lpDIBh, DIB_RGB_COLORS );
 755         ::DeleteDC( memdc );
 756         // background color set to RGB(16,16,16) in consistent with wxGTK
 757         unsigned char r=16, g=16, b=16;
 758         ptdata = data;
 759         ptbits = lpBits;
 760         for( i=0; i<height; i++ )
 761         {
 762             for( j=0; j<width; j++ )
 763             {
 764                 if( *ptbits != 0 )
 765                     ptdata += 3;
 766                 else
 767                 {
 768                     *(ptdata++)  = r;
 769                     *(ptdata++)  = g;
 770                     *(ptdata++)  = b;
 771                 }
 772                 ptbits += 3;
 773             }
 774             ptbits += padding;
 775         }
 776         SetMaskColour( r, g, b );
 777         SetMask( TRUE );
 778     }
 779     else
 780     {
 781         SetMask( FALSE );
 782     }
 783     // free allocated resources
 784     ::ReleaseDC(NULL, hdc);
 785     free(lpDIBh);
 786     free(lpBits);
 787 */
 788
 789     return image;
 790 }
 791
 792
 793 // ----------------------------------------------------------------------------
 794 // sub bitmap extraction
 795 // ----------------------------------------------------------------------------
 796
 797 wxBitmap wxBitmap::GetSubBitmap(
 798   const wxRect&                     rRect
 799 ) const
 800 {
 801     wxCHECK_MSG( Ok() &&
 802                  (rRect.x >= 0) && (rRect.y >= 0) &&
 803                  (rRect.x + rRect.width <= GetWidth()) &&
 804                  (rRect.y + rRect.height <= GetHeight()),
 805                  wxNullBitmap, wxT("Invalid bitmap or bitmap region") );
 806
 807     wxBitmap                        vRet( rRect.width
 808                                          ,rRect.height
 809                                          ,GetDepth()
 810                                         );
 811     wxASSERT_MSG( vRet.Ok(), wxT("GetSubBitmap error") );
 812
 813
 814     //
 815     // Copy bitmap data
 816     //
 817     SIZEL                           vSize = {0, 0};
 818     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
 819     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
 820     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
 821     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
 822     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
 823     POINTL                          vPoint[4] = { rRect.x, rRect.y,
 824                                                   rRect.x + rRect.width, rRect.y + rRect.height,
 825                                                   0, 0, GetWidth(), GetHeight()
 826                                                 };
 827
 828     ::GpiSetBitmap(hPSSrc, (HBITMAP) GetHBITMAP());
 829     ::GpiSetBitmap(hPSDst, (HBITMAP) vRet.GetHBITMAP());
 830     ::GpiBitBlt( hPSDst
 831                 ,hPSSrc
 832                 ,4L
 833                 ,vPoint
 834                 ,ROP_SRCCOPY
 835                 ,BBO_IGNORE
 836                );
 837
 838     //
 839     // Copy mask if there is one
 840     //
 841     if (GetMask())
 842     {
 843         BITMAPINFOHEADER2           vBmih;
 844
 845         memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
 846         vBmih.cbFix     = sizeof(BITMAPINFOHEADER2);
 847         vBmih.cx        = rRect.width;
 848         vBmih.cy        = rRect.height;
 849         vBmih.cPlanes   = 1;
 850         vBmih.cBitCount = 1;
 851
 852         HBITMAP                     hBmpMask = ::GpiCreateBitmap( hPSDst
 853                                                                  ,&vBmih
 854                                                                  ,0L
 855                                                                  ,NULL
 856                                                                  ,NULL
 857                                                                 );
 858
 859         ::GpiSetBitmap(hPSSrc, (HBITMAP) GetHBITMAP());
 860         ::GpiSetBitmap(hPSDst, (HBITMAP) vRet.GetHBITMAP());
 861
 862         ::GpiSetBitmap(hPSSrc, (HBITMAP) GetMask()->GetMaskBitmap());
 863         ::GpiSetBitmap(hPSDst, (HBITMAP) hBmpMask);
 864         ::GpiBitBlt( hPSDst
 865                     ,hPSSrc
 866                     ,4L
 867                     ,vPoint
 868                     ,ROP_SRCCOPY
 869                     ,BBO_IGNORE
 870                    );
 871
 872         wxMask*                     pMask = new wxMask((WXHBITMAP)hBmpMask);
 873         vRet.SetMask(pMask);
 874     }
 875
 876     ::GpiSetBitmap(hPSSrc, NULL);
 877     ::GpiSetBitmap(hPSDst, NULL);
 878     ::GpiDestroyPS(hPSSrc);
 879     ::GpiDestroyPS(hPSDst);
 880     ::DevCloseDC(hDCSrc);
 881     ::DevCloseDC(hDCDst);
 882     return vRet;
 883 } // end of wxBitmap::GetSubBitmap
 884
 885 // ----------------------------------------------------------------------------
 886 // wxBitmap accessors
 887 // ----------------------------------------------------------------------------
 888
 889 void wxBitmap::SetQuality(
 890   int                               nQ
 891 )
 892 {
 893     EnsureHasData();
 894
 895     GetBitmapData()->m_nQuality = nQ;
 896 } // end of wxBitmap::SetQuality
 897
 898 #if WXWIN_COMPATIBILITY_2
 899 void wxBitmap::SetOk(
 900   bool                              bOk
 901 )
 902 {
 903     EnsureHasData();
 904
 905     GetBitmapData()->m_bOk = bOk;
 906 } // end of wxBitmap::SetOk
 907 #endif // WXWIN_COMPATIBILITY_2
 908
 909 void wxBitmap::SetPalette(
 910   const wxPalette&                  rPalette
 911 )
 912 {
 913     EnsureHasData();
 914
 915     GetBitmapData()->m_vBitmapPalette = rPalette;
 916 } // end of wxBitmap::SetPalette
 917
 918 void wxBitmap::SetMask(
 919   wxMask*                           pMask
 920 )
 921 {
 922     EnsureHasData();
 923
 924     GetBitmapData()->m_pBitmapMask = pMask;
 925 } // end of wxBitmap::SetMask
 926
 927 //
 928 // Will try something for OS/2 but not really sure how close
 929 // to the msw intent this is.
 930 //
 931 wxBitmap wxBitmap::GetBitmapForDC(
 932   wxDC&                             rDc
 933 ) const
 934 {
 935     wxMemoryDC                      vMemDC;
 936     wxBitmap                        vTmpBitmap( this->GetWidth()
 937                                                ,this->GetHeight()
 938                                                ,rDc.GetDepth()
 939                                               );
 940     WXHBITMAP                       vOldBitmap;
 941     HPS                             hMemoryPS;
 942     HPS                             hPs;
 943     POINTL                          vPoint[4];
 944     SIZEL                           vSize = {0,0};
 945
 946     hMemoryPS = ::GpiCreatePS(vHabmain, (HDC)vMemDC.GetHDC(), &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
 947     hPs       = ::GpiCreatePS(vHabmain, (HDC)rDc.GetHDC(), &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
 948
 949     // TODO: Set the points
 950
 951     vOldBitmap = (WXHBITMAP)::GpiSetBitmap(hPs, (HBITMAP)vTmpBitmap.GetHBITMAP());
 952     ::GpiBitBlt(hPs, hMemoryPS, 4L, vPoint, ROP_SRCCOPY, BBO_IGNORE);
 953
 954     return(vTmpBitmap);
 955 } // end of wxBitmap::GetBitmapForDC
 956
 957 // ----------------------------------------------------------------------------
 958 // wxMask
 959 // ----------------------------------------------------------------------------
 960
 961 wxMask::wxMask()
 962 {
 963     m_hMaskBitmap = 0;
 964 } // end of wxMask::wxMask
 965
 966 // Construct a mask from a bitmap and a colour indicating
 967 // the transparent area
 968 wxMask::wxMask(
 969   const wxBitmap&                   rBitmap
 970 , const wxColour&                   rColour
 971 )
 972 {
 973     m_hMaskBitmap = 0;
 974     Create( rBitmap
 975            ,rColour
 976           );
 977 } // end of wxMask::wxMask
 978
 979 // Construct a mask from a bitmap and a palette index indicating
 980 // the transparent area
 981 wxMask::wxMask(
 982   const wxBitmap&                   rBitmap
 983 , int                               nPaletteIndex
 984 )
 985 {
 986     m_hMaskBitmap = 0;
 987     Create( rBitmap
 988            ,nPaletteIndex
 989           );
 990 } // end of wxMask::wxMask
 991
 992 // Construct a mask from a mono bitmap (copies the bitmap).
 993 wxMask::wxMask(
 994   const wxBitmap&                   rBitmap
 995 )
 996 {
 997     m_hMaskBitmap = 0;
 998     Create(rBitmap);
 999 } // end of wxMask::wxMask
1000
1001 wxMask::~wxMask()
1002 {
1003     if (m_hMaskBitmap)
1004         ::GpiDeleteBitmap((HBITMAP)m_hMaskBitmap);
1005 } // end of wxMask::~wxMask
1006
1007 // Create a mask from a mono bitmap (copies the bitmap).
1008 bool wxMask::Create(
1009   const wxBitmap&                   rBitmap
1010 )
1011 {
1012     BITMAPINFOHEADER2               vBmih;
1013     SIZEL                           vSize = {0, 0};
1014     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1015     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1016     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1017     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1018     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1019     POINTL                          vPoint[4] = { 0 ,0, rBitmap.GetWidth(), rBitmap.GetHeight(),
1020                                                   0, 0, rBitmap.GetWidth(), rBitmap.GetHeight()
1021                                                 };
1022
1023     if (m_hMaskBitmap)
1024     {
1025         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1026         m_hMaskBitmap = 0;
1027     }
1028     if (!rBitmap.Ok() || rBitmap.GetDepth() != 1)
1029     {
1030         return(FALSE);
1031     }
1032
1033     memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1034     vBmih.cbFix     =  sizeof(BITMAPINFOHEADER2);
1035     vBmih.cx        = rBitmap.GetWidth();
1036     vBmih.cy        = rBitmap.GetHeight();
1037     vBmih.cPlanes   = 1;
1038     vBmih.cBitCount = 1;
1039
1040     m_hMaskBitmap = ::GpiCreateBitmap( hPSDst
1041                                       ,&vBmih
1042                                       ,0L
1043                                       ,NULL
1044                                       ,NULL
1045                                      );
1046
1047     ::GpiSetBitmap(hPSSrc, (HBITMAP) rBitmap.GetHBITMAP());
1048     ::GpiSetBitmap(hPSDst, (HBITMAP) m_hMaskBitmap);
1049     ::GpiBitBlt( hPSDst
1050                 ,hPSSrc
1051                 ,4L
1052                 ,vPoint
1053                 ,ROP_SRCCOPY
1054                 ,BBO_IGNORE
1055                );
1056
1057     ::GpiDestroyPS(hPSSrc);
1058     ::GpiDestroyPS(hPSDst);
1059     ::DevCloseDC(hDCSrc);
1060     ::DevCloseDC(hDCDst);
1061     return(TRUE);
1062 } // end of wxMask::Create
1063
1064 // Create a mask from a bitmap and a palette index indicating
1065 // the transparent area
1066 bool wxMask::Create(
1067   const wxBitmap&                   rBitmap
1068 , int                               nPaletteIndex
1069 )
1070 {
1071     if (m_hMaskBitmap)
1072     {
1073         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1074         m_hMaskBitmap = 0;
1075     }
1076     if (rBitmap.Ok() && rBitmap.GetPalette()->Ok())
1077     {
1078         unsigned char               cRed;
1079         unsigned char               cGreen;
1080         unsigned char               cBlue;
1081
1082         if (rBitmap.GetPalette()->GetRGB( nPaletteIndex
1083                                          ,&cRed
1084                                          ,&cGreen
1085                                          ,&cBlue
1086                                         ))
1087         {
1088             wxColour                vTransparentColour( cRed
1089                                                        ,cGreen
1090                                                        ,cBlue
1091                                                       );
1092
1093             return (Create( rBitmap
1094                            ,vTransparentColour
1095                           ));
1096         }
1097     }
1098     return(FALSE);
1099 } // end of wxMask::Create
1100
1101 // Create a mask from a bitmap and a colour indicating
1102 // the transparent area
1103 bool wxMask::Create(
1104   const wxBitmap&                   rBitmap
1105 , const wxColour&                   rColour
1106 )
1107 {
1108     bool                            bOk = TRUE;
1109     COLORREF                        vMaskColour = OS2RGB( rColour.Red()
1110                                                          ,rColour.Green()
1111                                                          ,rColour.Blue()
1112                                                         );
1113     BITMAPINFOHEADER2               vBmih;
1114     SIZEL                           vSize = {0, 0};
1115     DEVOPENSTRUC                    vDop = { NULL, "DISPLAY", NULL, NULL, NULL, NULL, NULL, NULL, NULL };
1116     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1117     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1118     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1119     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1120     POINTL                          vPoint[4] = { 0 ,0, rBitmap.GetWidth(), rBitmap.GetHeight(),
1121                                                   0, 0, rBitmap.GetWidth(), rBitmap.GetHeight()
1122                                                 };
1123
1124     if (m_hMaskBitmap)
1125     {
1126         ::GpiDeleteBitmap((HBITMAP) m_hMaskBitmap);
1127         m_hMaskBitmap = 0;
1128     }
1129     if (!rBitmap.Ok())
1130     {
1131         return(FALSE);
1132     }
1133
1134     //
1135     // Scan the bitmap for the transparent colour and set
1136     // the corresponding pixels in the mask to BLACK and
1137     // the rest to WHITE
1138     //
1139
1140     memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1141     vBmih.cbFix     =  sizeof(BITMAPINFOHEADER2);
1142     vBmih.cx        = rBitmap.GetWidth();
1143     vBmih.cy        = rBitmap.GetHeight();
1144     vBmih.cPlanes   = 1;
1145     vBmih.cBitCount = 1;
1146
1147     m_hMaskBitmap = ::GpiCreateBitmap( hPSDst
1148                                       ,&vBmih
1149                                       ,0L
1150                                       ,NULL
1151                                       ,NULL
1152                                      );
1153
1154     ::GpiSetBitmap(hPSSrc, (HBITMAP) rBitmap.GetHBITMAP());
1155     ::GpiSetBitmap(hPSDst, (HBITMAP) m_hMaskBitmap);
1156
1157     //
1158     // This is not very efficient, but I can't think
1159     // of a better way of doing it
1160     //
1161     for (int w = 0; w < rBitmap.GetWidth(); w++)
1162     {
1163         for (int h = 0; h < rBitmap.GetHeight(); h++)
1164         {
1165             POINTL                  vPt = {w, h};
1166             COLORREF                vCol = (COLORREF)::GpiQueryPel(hPSSrc, &vPt);
1167             if (vCol == (COLORREF)CLR_NOINDEX)
1168             {
1169                 //
1170                 // Doesn't make sense to continue
1171                 //
1172                 bOk = FALSE;
1173                 break;
1174             }
1175
1176             if (vCol == vMaskColour)
1177             {
1178                 ::GpiSetColor(hPSDst, OS2RGB(0, 0, 0));
1179                 ::GpiSetPel(hPSDst, &vPt);
1180             }
1181             else
1182             {
1183                 ::GpiSetColor(hPSDst, OS2RGB(255, 255, 255));
1184                 ::GpiSetPel(hPSDst, &vPt);
1185             }
1186         }
1187     }
1188     ::GpiSetBitmap(hPSSrc, NULL);
1189     ::GpiSetBitmap(hPSDst, NULL);
1190     ::GpiDestroyPS(hPSSrc);
1191     ::GpiDestroyPS(hPSDst);
1192     ::DevCloseDC(hDCSrc);
1193     ::DevCloseDC(hDCDst);
1194     return(TRUE);
1195 } // end of wxMask::Create
1196
1197 // ----------------------------------------------------------------------------
1198 // wxBitmapHandler
1199 // ----------------------------------------------------------------------------
1200
1201 bool wxBitmapHandler::Create(
1202   wxGDIImage*                       pImage
1203 , void*                             pData
1204 , long                              lFlags
1205 , int                               nWidth
1206 , int                               nHeight
1207 , int                               nDepth
1208 )
1209 {
1210     wxBitmap*                       pBitmap = wxDynamicCast( pImage
1211                                                             ,wxBitmap
1212                                                            );
1213
1214     return(pBitmap ? Create( pBitmap
1215                             ,pData
1216                             ,nWidth
1217                             ,nHeight
1218                             ,nDepth
1219                            ) : FALSE);
1220 }
1221
1222 bool wxBitmapHandler::Load(
1223   wxGDIImage*                       pImage
1224 , const wxString&                   rName
1225 , HPS                               hPs
1226 , long                              lFlags
1227 , int                               nWidth
1228 , int                               nHeight
1229 )
1230 {
1231     wxBitmap*                       pBitmap = wxDynamicCast( pImage
1232                                                             ,wxBitmap
1233                                                            );
1234
1235     return(pBitmap ? LoadFile( pBitmap
1236                               ,rName
1237                               ,hPs
1238                               ,lFlags
1239                               ,nWidth
1240                               ,nHeight
1241                              ) : FALSE);
1242 }
1243
1244 bool wxBitmapHandler::Save(
1245   wxGDIImage*                       pImage
1246 , const wxString&                   rName
1247 , int                               lType
1248 )
1249 {
1250     wxBitmap*                       pBitmap = wxDynamicCast( pImage
1251                                                             ,wxBitmap
1252                                                            );
1253
1254     return(pBitmap ? SaveFile( pBitmap
1255                               ,rName
1256                               ,lType
1257                              ) : FALSE);
1258 }
1259
1260 bool wxBitmapHandler::Create(
1261   wxBitmap*                         WXUNUSED(pBitmap)
1262 , void*                             WXUNUSED(pData)
1263 , long                              WXUNUSED(lType)
1264 , int                               WXUNUSED(nWidth)
1265 , int                               WXUNUSED(nHeight)
1266 , int                               WXUNUSED(nDepth)
1267 )
1268 {
1269     return(FALSE);
1270 }
1271
1272 bool wxBitmapHandler::LoadFile(
1273   wxBitmap*                         WXUNUSED(pBitmap)
1274 , const wxString&                   WXUNUSED(rName)
1275 , HPS                               WXUNUSED(hPs)
1276 , long                              WXUNUSED(lType)
1277 , int                               WXUNUSED(nDesiredWidth)
1278 , int                               WXUNUSED(nDesiredHeight)
1279 )
1280 {
1281     return(FALSE);
1282 }
1283
1284 bool wxBitmapHandler::SaveFile(
1285   wxBitmap*                         WXUNUSED(pBitmap)
1286 , const wxString&                   WXUNUSED(rName)
1287 , int                               WXUNUSED(nType)
1288 , const wxPalette*                  WXUNUSED(pPalette)
1289 )
1290 {
1291     return(FALSE);
1292 }
1293
1294 // ----------------------------------------------------------------------------
1295 // Utility functions
1296 // ----------------------------------------------------------------------------
1297 HBITMAP wxInvertMask(
1298   HBITMAP                           hBmpMask
1299 , int                               nWidth
1300 , int                               nHeight
1301 )
1302 {
1303     HBITMAP                         hBmpInvMask = 0;
1304
1305     wxCHECK_MSG( hBmpMask, 0, _T("invalid bitmap in wxInvertMask") );
1306
1307     //
1308     // Get width/height from the bitmap if not given
1309     //
1310     if (!nWidth || !nHeight)
1311     {
1312         BITMAPINFOHEADER2           vBmhdr;
1313
1314         ::GpiQueryBitmapInfoHeader( hBmpMask
1315                                    ,&vBmhdr
1316                                   );
1317         nWidth  = (int)vBmhdr.cx;
1318         nHeight = (int)vBmhdr.cy;
1319     }
1320
1321     BITMAPINFOHEADER2               vBmih;
1322     SIZEL                           vSize = {0, 0};
1323     DEVOPENSTRUC                    vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
1324     HDC                             hDCSrc = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1325     HDC                             hDCDst = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
1326     HPS                             hPSSrc = ::GpiCreatePS(vHabmain, hDCSrc, &vSize, PU_PELS | GPIA_ASSOC);
1327     HPS                             hPSDst = ::GpiCreatePS(vHabmain, hDCDst, &vSize, PU_PELS | GPIA_ASSOC);
1328     POINTL                          vPoint[4] = { 0 ,0, nWidth, nHeight,
1329                                                   0, 0, nWidth, nHeight
1330                                                 };
1331
1332     memset(&vBmih, '\0', sizeof(BITMAPINFOHEADER2));
1333     vBmih.cbFix     =  sizeof(BITMAPINFOHEADER2);
1334     vBmih.cx        = nWidth;
1335     vBmih.cy        = nHeight;
1336     vBmih.cPlanes   = 1;
1337     vBmih.cBitCount = 1;
1338
1339     hBmpInvMask = ::GpiCreateBitmap( hPSDst
1340                                     ,&vBmih
1341                                     ,0L
1342                                     ,NULL
1343                                     ,NULL
1344                                    );
1345
1346     ::GpiSetBitmap(hPSSrc, (HBITMAP) hBmpMask);
1347     ::GpiSetBitmap(hPSDst, (HBITMAP) hBmpInvMask);
1348
1349     ::GpiBitBlt( hPSDst
1350                 ,hPSSrc
1351                 ,4L
1352                 ,vPoint
1353                 ,ROP_SRCINVERT
1354                 ,BBO_IGNORE
1355                );
1356
1357     ::GpiDestroyPS(hPSSrc);
1358     ::GpiDestroyPS(hPSDst);
1359     ::DevCloseDC(hDCSrc);
1360     ::DevCloseDC(hDCDst);
1361
1362     return hBmpInvMask;
1363 } // end of WxWinGdi_InvertMask