+
+// ---------------------------------------------------------------------------
+// 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);
+ }
+ wxMask* pNewMask;
+
+ pNewMask = new wxMask(pMask->GetMaskBitmap());
+ vNewBmp.SetMask(pNewMask);
+ free(pucBits);
+ ::GpiSetBitmap(hPS, NULLHANDLE);
+ ::GpiDestroyPS(hPS);
+ ::DevCloseDC(hDC);
+ if (vNewBmp.Ok())
+ return(vNewBmp);
+ return(wxNullBitmap);
+} // end of wxDisableBitmap
+
+
projects / wxWidgets.git / blobdiff