+ if (pMask)
+ {
+ //
+ // Need to imitate ::MaskBlt in windows.
+ // 1) Extract the bits from from the bitmap.
+ // 2) Extract the bits from the mask
+ // 3) Using the mask bits do the following:
+ // A) If the mask byte is 00 leave the bitmap byte alone
+ // B) If the mask byte is FF copy the screen color into
+ // bitmap byte
+ // 4) Create a new bitmap and set its bits to the above result
+ // 5) Blit this to the screen PS
+ //
+ HBITMAP hMask = (HBITMAP)pMask->GetMaskBitmap();
+ HBITMAP hOldMask = NULLHANDLE;
+ HBITMAP hOldBitmap = NULLHANDLE;
+ HBITMAP hNewBitmap = NULLHANDLE;
+ unsigned char* pucBits; // buffer that will contain the bitmap data
+ unsigned char* pucBitsMask; // buffer that will contain the mask data
+ unsigned char* pucData; // pointer to use to traverse bitmap data
+ unsigned char* pucDataMask; // pointer to use to traverse mask data
+ LONG lHits;
+ ERRORID vError;
+ wxString sError;
+
+ //
+ // The usual Memory context creation stuff
+ //
+ 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);
+
+ //
+ // The usual bitmap header stuff
+ //
+ BITMAPINFOHEADER2 vHeader;
+ BITMAPINFO2 vInfo;
+
+ 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;
+ LONG lScans = 0L;
+ LONG lColor = 0L;
+
+ //
+ // Need to get a background color for mask blitting
+ //
+ if (IsKindOf(CLASSINFO(wxWindowDCImpl)))
+ {
+ wxWindowDCImpl* pWindowDC = wxDynamicCast(this, wxWindowDCImpl);
+
+ lColor = pWindowDC->m_pCanvas->GetBackgroundColour().GetPixel();
+ }
+ else if (GetBrush().Ok())
+ lColor = GetBrush().GetColour().GetPixel();
+ else
+ lColor = m_textBackgroundColour.GetPixel();
+
+ //
+ // Bitmap must be in a double-word aligned 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());
+ pucBitsMask = (unsigned char *)malloc(nBytesPerLine * rBmp.GetHeight());
+ memset(pucBits, '\0', (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);
+ }
+
+ //
+ // Now set the bytes(bits) according to the mask values
+ // 3 bytes per pel...must handle one at a time
+ //
+ pucData = pucBits;
+ pucDataMask = pucBitsMask;
+
+ //
+ // 16 bit kludge really only kinda works. The mask gets applied
+ // where needed but the original bitmap bits are dorked sometimes
+ //
+ bool bpp16 = (wxDisplayDepth() == 16);
+
+ 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++;
+ else if (*pucDataMask == 0xFF) // leave bitmap byte alone
+ pucData++;
+ else
+ {
+ *pucData = ((unsigned char)(lColor >> 16));
+ pucData++;
+ }
+ // Byte 2
+ if (bpp16 && *(pucDataMask + 1) == 0xFC) // 16 bit display gobblygook
+ pucData++;
+ else if (*(pucDataMask + 1) == 0xFF) // leave bitmap byte alone
+ pucData++;
+ else
+ {
+ *pucData = ((unsigned char)(lColor >> 8));
+ pucData++;
+ }
+
+ // Byte 3
+ if (bpp16 && *(pucDataMask + 2) == 0xF8) // 16 bit display gobblygook
+ pucData++;
+ else if (*(pucDataMask + 2) == 0xFF) // leave bitmap byte alone
+ pucData++;
+ else
+ {
+ *pucData = ((unsigned char)lColor);
+ pucData++;
+ }
+ pucDataMask += 3;
+ }
+ for (j = 0; j < nPadding; j++)
+ {
+ pucData++;
+ pucDataMask++;
+ }
+ }
+ //
+ // Create a new bitmap
+ //
+ vHeader.cx = (ULONG)rBmp.GetWidth();
+ vHeader.cy = (ULONG)rBmp.GetHeight();
+ vHeader.cPlanes = 1L;
+ vHeader.cBitCount = 24;
+ if ((hNewBitmap = ::GpiCreateBitmap( hPS
+ ,&vHeader
+ ,CBM_INIT
+ ,(PBYTE)pucBits
+ ,&vInfo
+ )) == GPI_ERROR)
+ {
+ vError = ::WinGetLastError(vHabmain);
+ sError = wxPMErrorToStr(vError);
+ }
+
+ //
+ // Now blit it to the screen PS
+ //
+ if ((lHits = ::GpiWCBitBlt( (HPS)GetHPS()
+ ,hNewBitmap
+ ,4
+ ,vPoint
+ ,ROP_SRCCOPY
+ ,BBO_IGNORE
+ )) == GPI_ERROR)
+ {
+ vError = ::WinGetLastError(vHabmain);
+ sError = wxPMErrorToStr(vError);
+ }
+
+ //
+ // Clean up
+ //
+ free(pucBits);
+ free(pucBitsMask);
+ ::GpiSetBitmap(hPS, NULLHANDLE);
+ ::GpiDeleteBitmap(hNewBitmap);
+ ::GpiDestroyPS(hPS);
+ ::DevCloseDC(hDC);
+ }
+ }
+ else
+ {
+ ULONG lOldForeGround = ::GpiQueryColor((HPS)GetHPS());
+ ULONG lOldBackGround = ::GpiQueryBackColor((HPS)GetHPS());
+
+ if (m_textForegroundColour.Ok())
+ {
+ ::GpiSetColor( (HPS)GetHPS()
+ ,m_textForegroundColour.GetPixel()
+ );
+ }
+ if (m_textBackgroundColour.Ok())
+ {
+ ::GpiSetBackColor( (HPS)GetHPS()
+ ,m_textBackgroundColour.GetPixel()
+ );
+ }
+ //
+ // Need to alter bits in a mono bitmap to match the new
+ // background-foreground if it is different.
+ //
+ if (rBmp.IsMono() &&
+ ((m_textForegroundColour.GetPixel() != lOldForeGround) ||
+ (m_textBackgroundColour.GetPixel() != lOldBackGround)))
+ {
+ 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);
+
+ int nBytesPerLine = rBmp.GetWidth() * 3;
+ int i, j;
+ LONG lForeGround = m_textForegroundColour.GetPixel();
+ LONG lBackGround = m_textBackgroundColour.GetPixel();
+ LONG lScans;
+ HBITMAP hOldBitmap = NULLHANDLE;
+ BITMAPINFO2 vInfo;
+ ERRORID vError;
+ wxString sError;
+
+
+ memset(&vInfo, '\0', 16);
+ vInfo.cbFix = 16;
+ vInfo.cx = (ULONG)rBmp.GetWidth();
+ vInfo.cy = (ULONG)rBmp.GetHeight();
+ vInfo.cPlanes = 1;
+ vInfo.cBitCount = 24;
+
+ unsigned char* pucBits; // buffer that will contain the bitmap data
+ unsigned char* pucData; // pointer to use to traverse bitmap data
+
+ pucBits = new unsigned char[nBytesPerLine * rBmp.GetHeight()];
+ memset(pucBits, '\0', (nBytesPerLine * rBmp.GetHeight()));
+
+ if ((hOldBitmap = ::GpiSetBitmap(hPS, hBitmap)) == HBM_ERROR)
+ {
+ vError = ::WinGetLastError(vHabmain);
+ sError = wxPMErrorToStr(vError);
+ return;
+ }
+ if ((lScans = ::GpiQueryBitmapBits( hPS
+ ,0L
+ ,(LONG)rBmp.GetHeight()
+ ,(PBYTE)pucBits
+ ,&vInfo
+ )) == GPI_ALTERROR)
+ {
+ vError = ::WinGetLastError(vHabmain);
+ sError = wxPMErrorToStr(vError);
+ return;
+ }
+ unsigned char cOldRedFore = (unsigned char)(lOldForeGround >> 16);
+ unsigned char cOldGreenFore = (unsigned char)(lOldForeGround >> 8);
+ unsigned char cOldBlueFore = (unsigned char)lOldForeGround;
+
+ unsigned char cRedFore = (unsigned char)(lForeGround >> 16);
+ unsigned char cGreenFore = (unsigned char)(lForeGround >> 8);
+ unsigned char cBlueFore = (unsigned char)lForeGround;
+
+ unsigned char cRedBack = (unsigned char)(lBackGround >> 16);
+ unsigned char cGreenBack = (unsigned char)(lBackGround >> 8);
+ unsigned char cBlueBack = (unsigned char)lBackGround;
+
+ pucData = pucBits;
+ for (i = 0; i < rBmp.GetHeight(); i++)
+ {
+ for (j = 0; j < rBmp.GetWidth(); j++)
+ {
+ unsigned char cBmpRed = *pucData;
+ unsigned char cBmpGreen = *(pucData + 1);
+ unsigned char cBmpBlue = *(pucData + 2);
+
+ if ((cBmpRed == cOldRedFore) &&
+ (cBmpGreen == cOldGreenFore) &&
+ (cBmpBlue == cOldBlueFore))
+ {
+ *pucData = cBlueFore;
+ pucData++;
+ *pucData = cGreenFore;
+ pucData++;
+ *pucData = cRedFore;
+ pucData++;
+ }
+ else
+ {
+ *pucData = cBlueBack;
+ pucData++;
+ *pucData = cGreenBack;
+ pucData++;
+ *pucData = cRedBack;
+ pucData++;
+ }
+ }
+ }
+ if ((lScans = ::GpiSetBitmapBits( hPS
+ ,0L
+ ,(LONG)rBmp.GetHeight()
+ ,(PBYTE)pucBits
+ ,&vInfo
+ )) == GPI_ALTERROR)
+ {
+ vError = ::WinGetLastError(vHabmain);
+ sError = wxPMErrorToStr(vError);
+ return;
+ }
+ delete [] pucBits;
+ ::GpiSetBitmap(hPS, NULLHANDLE);
+ ::GpiDestroyPS(hPS);
+ ::DevCloseDC(hDC);
+ }
+ ::GpiWCBitBlt( (HPS)GetHPS()
+ ,hBitmap
+ ,4
+ ,vPoint
+ ,ROP_SRCCOPY
+ ,BBO_IGNORE
+ );
+ ::GpiSetBitmap((HPS)GetHPS(), hBitmapOld);
+ ::GpiSetColor((HPS)GetHPS(), lOldForeGround);
+ ::GpiSetBackColor((HPS)GetHPS(), lOldBackGround);
+ }
+ }
+} // end of wxPMDCImpl::DoDrawBitmap
projects / wxWidgets.git / blobdiff