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Blit code for masks

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9610 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
David Webster 2001-03-29 22:56:40 +00:00
parent 86435b1a7d
commit b02121c3a1
1 changed files with 147 additions and 62 deletions
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209
src/os2/dc.cpp
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@ -1342,11 +1342,6 @@ bool wxDC::DoBlit(
CHARBUNDLE vCbnd;
COLORREF vOldTextColor;
COLORREF vOldBackground = ::GpiQueryBackColor(m_hPS);
POINTL aPoint[4] = { vXdest, vYdest
,vXdest + vWidth, vYdest + vHeight
,vXsrc, vYsrc
,vXsrc + vWidth, vYsrc + vHeight
};
if (bUseMask)
{
@ -1407,7 +1402,7 @@ bool wxDC::DoBlit(
}
bool bSuccess;
#if 0
if (bUseMask)
{
//
@ -1415,68 +1410,158 @@ bool wxDC::DoBlit(
//
//
// Create a temp buffer bitmap and DCs to access it and the mask
// Create a temp buffer bitmap and DCs/PSs to access it and the mask
//
HDC dc_mask = ::CreateCompatibleDC(GetHdcOf(*source));
HDC dc_buffer = ::CreateCompatibleDC(GetHdc());
HBITMAP buffer_bmap = ::CreateCompatibleBitmap(GetHdc(), width, height);
::SelectObject(dc_mask, (HBITMAP) mask->GetMaskBitmap());
::SelectObject(dc_buffer, buffer_bmap);
HDC hDCMask;
HDC hDCBuffer;
HPS hPSMask;
HPS hPSBuffer;
DEVOPENSTRUC vDOP = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
BITMAPINFOHEADER2 vBmpHdr;
SIZEL vSize = {0, 0};
LONG rc;
// copy dest to buffer
if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
GetHdc(), xdest, ydest, SRCCOPY) )
{
wxLogLastError(wxT("BitBlt"));
}
hDCMask = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
hDCBuffer = ::DevOpenDC(vHabmain, OD_MEMORY, "*", 5L, (PDEVOPENDATA)&vDOP, NULLHANDLE);
hPSMask = ::GpiCreatePS(vHabmain, hDCMask, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
hPSBuffer = ::GpiCreatePS(vHabmain, hDCBuffer, &vSize, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
// copy src to buffer using selected raster op
if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
GetHdcOf(*source), xsrc, ysrc, dwRop) )
{
wxLogLastError(wxT("BitBlt"));
}
memset(&vBmpHdr, 0, sizeof(BITMAPINFOHEADER2));
vBmpHdr.cbFix = sizeof(BITMAPINFOHEADER2);
vBmpHdr.cx = vWidth;
vBmpHdr.cy = vHeight;
vBmpHdr.cPlanes = 1;
vBmpHdr.cBitCount = 24;
// set masked area in buffer to BLACK (pixel value 0)
COLORREF prevBkCol = ::SetBkColor(GetHdc(), RGB(255, 255, 255));
COLORREF prevCol = ::SetTextColor(GetHdc(), RGB(0, 0, 0));
if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
dc_mask, xsrc, ysrc, SRCAND) )
{
wxLogLastError(wxT("BitBlt"));
}
HBITMAP hBufBitmap = ::GpiCreateBitmap(GetHPS(), &vBmpHdr, 0L, NULL, NULL);
POINTL aPoint1[4] = { 0, 0
,vWidth, vHeight
,vXdest, vYdest
,vXdest + vWidth, vYdest + vHeight
};
POINTL aPoint2[4] = { 0, 0
,vWidth, vHeight
,vXsrc, vYsrc
,vXsrc + vWidth, vYsrc + vHeight
};
POINTL aPoint3[4] = { vXdest, vYdest
,vXdest + vWidth, vYdest + vHeight
,0, 0
,vWidth, vHeight
};
::GpiSetBitmap(hPSMask, (HBITMAP) pMask->GetMaskBitmap());
::GpiSetBitmap(hPSBuffer, (HBITMAP) hBufBitmap);
// set unmasked area in dest to BLACK
::SetBkColor(GetHdc(), RGB(0, 0, 0));
::SetTextColor(GetHdc(), RGB(255, 255, 255));
if ( !::BitBlt(GetHdc(), xdest, ydest, (int)width, (int)height,
dc_mask, xsrc, ysrc, SRCAND) )
{
wxLogLastError(wxT("BitBlt"));
}
::SetBkColor(GetHdc(), prevBkCol); // restore colours to original values
::SetTextColor(GetHdc(), prevCol);
// OR buffer to dest
success = ::BitBlt(GetHdc(), xdest, ydest,
(int)width, (int)height,
dc_buffer, 0, 0, SRCPAINT) != 0;
if ( !success )
{
wxLogLastError(wxT("BitBlt"));
}
// tidy up temporary DCs and bitmap
::SelectObject(dc_mask, 0);
::DeleteDC(dc_mask);
::SelectObject(dc_buffer, 0);
::DeleteDC(dc_buffer);
::DeleteObject(buffer_bmap);
//
// Copy dest to buffer
//
rc = ::GpiBitBlt( hPSBuffer
,GetHPS()
,4L
,aPoint1
,ROP_SRCCOPY
,BBO_IGNORE
);
if (rc == GPI_ERROR)
{
wxLogLastError(wxT("BitBlt"));
}
//
// Copy src to buffer using selected raster op
//
rc = ::GpiBitBlt( hPSBuffer
,GetHPS()
,4L
,aPoint2
,lRop
,BBO_IGNORE
);
if (rc == GPI_ERROR)
{
wxLogLastError(wxT("BitBlt"));
}
//
// Set masked area in buffer to BLACK (pixel value 0)
//
COLORREF vPrevBkCol = ::GpiQueryBackColor(GetHPS());
COLORREF vPrevCol = ::GpiQueryColor(GetHPS());
::GpiSetBackColor(GetHPS(), OS2RGB(255, 255, 255));
::GpiSetColor(GetHPS(), OS2RGB(0, 0, 0));
rc = ::GpiBitBlt( hPSBuffer
,hPSMask
,4L
,aPoint2
,ROP_SRCAND
,BBO_IGNORE
);
if (rc == GPI_ERROR)
{
wxLogLastError(wxT("BitBlt"));
}
//
// Set unmasked area in dest to BLACK
//
::GpiSetBackColor(GetHPS(), OS2RGB(0, 0, 0));
::GpiSetColor(GetHPS(), OS2RGB(255, 255, 255));
rc = ::GpiBitBlt( GetHPS()
,hPSMask
,4L
,aPoint2
,ROP_SRCAND
,BBO_IGNORE
);
if (rc == GPI_ERROR)
{
wxLogLastError(wxT("BitBlt"));
}
//
// Restore colours to original values
//
::GpiSetBackColor(GetHPS(), vPrevBkCol);
::GpiSetColor(GetHPS(), vPrevCol);
//
// OR buffer to dest
//
rc = ::GpiBitBlt( GetHPS()
,hPSMask
,4L
,aPoint2
,ROP_SRCPAINT
,BBO_IGNORE
);
if (rc == GPI_ERROR)
{
bSuccess = FALSE;
wxLogLastError(wxT("BitBlt"));
}
//
// Tidy up temporary DCs and bitmap
//
::GpiSetBitmap(hPSMask, NULLHANDLE);
::GpiSetBitmap(hPSBuffer, NULLHANDLE);
::GpiDestroyPS(hPSMask);
::GpiDestroyPS(hPSBuffer);
::DevCloseDC(hDCMask);
::DevCloseDC(hDCBuffer);
::GpiDeleteBitmap(hBufBitmap);
bSuccess = TRUE;
}
#endif
// else // no mask, just BitBlt() it
// {
else // no mask, just BitBlt() it
{
POINTL aPoint[4] = { vXdest, vYdest
,vXdest + vWidth, vYdest + vHeight
,vXsrc, vYsrc
,vXsrc + vWidth, vYsrc + vHeight
};
bSuccess = (::GpiBitBlt( m_hPS
,pSource->GetHPS()
,4L
@ -1488,7 +1573,7 @@ bool wxDC::DoBlit(
{
wxLogLastError(wxT("BitBlt"));
}
// }
}
vCbnd.lColor = (LONG)vOldTextColor;
::GpiSetAttrs( m_hPS // presentation-space handle
,PRIM_CHAR // Char primitive.