-// ---------------------------------------------------------------------------
-// Helper for taking a regular bitmap and giving it a disabled look
-// ---------------------------------------------------------------------------
-wxBitmap wxDisableBitmap(
- const wxBitmap& rBmp
-, long lColor
-)
-{
- wxMask* pMask = rBmp.GetMask();
-
- if (!pMask)
- return(wxNullBitmap);
-
- DEVOPENSTRUC vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
- SIZEL vSize = {0, 0};
- HDC hDC = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDop, NULLHANDLE);
- HPS hPS = ::GpiCreatePS(vHabmain, hDC, &vSize, PU_PELS | GPIA_ASSOC);
- BITMAPINFOHEADER2 vHeader;
- BITMAPINFO2 vInfo;
- ERRORID vError;
- wxString sError;
- HBITMAP hBitmap = (HBITMAP)rBmp.GetHBITMAP();
- HBITMAP hOldBitmap = NULLHANDLE;
- HBITMAP hOldMask = NULLHANDLE;
- HBITMAP hMask = (HBITMAP)rBmp.GetMask()->GetMaskBitmap();
- unsigned char* pucBits; // buffer that will contain the bitmap data
- unsigned char* pucData; // pointer to use to traverse bitmap data
- unsigned char* pucBitsMask; // buffer that will contain the mask data
- unsigned char* pucDataMask; // pointer to use to traverse mask data
- LONG lScans = 0L;
- LONG lScansSet = 0L;
- bool bpp16 = (wxDisplayDepth() == 16);
-
- memset(&vHeader, '\0', 16);
- vHeader.cbFix = 16;
-
- memset(&vInfo, '\0', 16);
- vInfo.cbFix = 16;
- vInfo.cx = (ULONG)rBmp.GetWidth();
- vInfo.cy = (ULONG)rBmp.GetHeight();
- vInfo.cPlanes = 1;
- vInfo.cBitCount = 24; // Set to desired count going in
-
- //
- // Create the buffers for data....all wxBitmaps are 24 bit internally
- //
- int nBytesPerLine = rBmp.GetWidth() * 3;
- int nSizeDWORD = sizeof(DWORD);
- int nLineBoundary = nBytesPerLine % nSizeDWORD;
- int nPadding = 0;
- int i;
- int j;
-
- //
- // Bitmap must be ina double-word alligned address so we may
- // have some padding to worry about
- //
- if (nLineBoundary > 0)
- {
- nPadding = nSizeDWORD - nLineBoundary;
- nBytesPerLine += nPadding;
- }
- pucBits = (unsigned char *)malloc(nBytesPerLine * rBmp.GetHeight());
- memset(pucBits, '\0', (nBytesPerLine * rBmp.GetHeight()));
- pucBitsMask = (unsigned char *)malloc(nBytesPerLine * rBmp.GetHeight());
- memset(pucBitsMask, '\0', (nBytesPerLine * rBmp.GetHeight()));
-
- //
- // Extract the bitmap and mask data
- //
- if ((hOldBitmap = ::GpiSetBitmap(hPS, hBitmap)) == HBM_ERROR)
- {
- vError = ::WinGetLastError(vHabmain);
- sError = wxPMErrorToStr(vError);
- }
- ::GpiQueryBitmapInfoHeader(hBitmap, &vHeader);
- vInfo.cBitCount = 24;
- if ((lScans = ::GpiQueryBitmapBits( hPS
- ,0L
- ,(LONG)rBmp.GetHeight()
- ,(PBYTE)pucBits
- ,&vInfo
- )) == GPI_ALTERROR)
- {
- vError = ::WinGetLastError(vHabmain);
- sError = wxPMErrorToStr(vError);
- }
- if ((hOldMask = ::GpiSetBitmap(hPS, hMask)) == HBM_ERROR)
- {
- vError = ::WinGetLastError(vHabmain);
- sError = wxPMErrorToStr(vError);
- }
- ::GpiQueryBitmapInfoHeader(hMask, &vHeader);
- vInfo.cBitCount = 24;
- if ((lScans = ::GpiQueryBitmapBits( hPS
- ,0L
- ,(LONG)rBmp.GetHeight()
- ,(PBYTE)pucBitsMask
- ,&vInfo
- )) == GPI_ALTERROR)
- {
- vError = ::WinGetLastError(vHabmain);
- sError = wxPMErrorToStr(vError);
- }
- if (( hMask = ::GpiSetBitmap(hPS, hOldMask)) == HBM_ERROR)
- {
- vError = ::WinGetLastError(vHabmain);
- sError = wxPMErrorToStr(vError);
- }
- pucData = pucBits;
- pucDataMask = pucBitsMask;
-
- //
- // Get the mask value
- //
- for (i = 0; i < rBmp.GetHeight(); i++)
- {
- for (j = 0; j < rBmp.GetWidth(); j++)
- {
- // Byte 1
- if (bpp16 && *pucDataMask == 0xF8) // 16 bit display gobblygook
- {
- *pucData = 0x7F;
- pucData++;
- }
- else if (*pucDataMask == 0xFF) // set to grey
- {
- *pucData = 0x7F;
- pucData++;
- }
- else
- {
- *pucData = ((unsigned char)(lColor >> 16));
- pucData++;
- }
-
- // Byte 2
- if (bpp16 && *(pucDataMask + 1) == 0xFC) // 16 bit display gobblygook
- {
- *pucData = 0x7F;
- pucData++;
- }
- else if (*(pucDataMask + 1) == 0xFF) // set to grey
- {
- *pucData = 0x7F;
- pucData++;
- }
- else
- {
- *pucData = ((unsigned char)(lColor >> 8));
- pucData++;
- }
-
- // Byte 3
- if (bpp16 && *(pucDataMask + 2) == 0xF8) // 16 bit display gobblygook
- {
- *pucData = 0x7F;
- pucData++;
- }
- else if (*(pucDataMask + 2) == 0xFF) // set to grey
- {
- *pucData = 0x7F;
- pucData++;
- }
- else
- {
- *pucData = ((unsigned char)lColor);
- pucData++;
- }
- pucDataMask += 3;
- }
- for (j = 0; j < nPadding; j++)
- {
- pucData++;
- pucDataMask++;
- }
- }
-
- //
- // Create a new bitmap and set the modified bits
- //
- wxBitmap vNewBmp( rBmp.GetWidth()
- ,rBmp.GetHeight()
- ,24
- );
- HBITMAP hNewBmp = (HBITMAP)vNewBmp.GetHBITMAP();
-
- if ((hOldBitmap = ::GpiSetBitmap(hPS, hNewBmp)) == HBM_ERROR)
- {
- vError = ::WinGetLastError(vHabmain);
- sError = wxPMErrorToStr(vError);
- }
- if ((lScansSet = ::GpiSetBitmapBits( hPS
- ,0L
- ,(LONG)rBmp.GetHeight()
- ,(PBYTE)pucBits
- ,&vInfo
- )) == GPI_ALTERROR)
-
- {
- vError = ::WinGetLastError(vHabmain);
- sError = wxPMErrorToStr(vError);
- }
- vNewBmp.SetMask(rBmp.GetMask());
- free(pucBits);
- ::GpiSetBitmap(hPS, NULLHANDLE);
- ::GpiDestroyPS(hPS);
- ::DevCloseDC(hDC);
- if (vNewBmp.Ok())
- return(vNewBmp);
- return(wxNullBitmap);
-} // end of wxDisableBitmap
-
projects / wxWidgets.git / blobdiff