void wxDC::DoDrawSubBitmap(const wxBitmap &bmp,
wxCoord x, wxCoord y, wxCoord w, wxCoord h,
wxCoord destx, wxCoord desty, int rop, bool useMask)
{
wxCHECK_RET( Ok(), wxT("invalid dc") );
wxCHECK_RET( bmp.Ok(), wxT("invalid bitmap") );
// NB: we could also support XOR here (via DSBLIT_XOR)
// and possibly others via SetSrc/DstBlendFunction()
wxCHECK_RET( rop == wxCOPY, _T("only wxCOPY function supported") );
if ( bmp.GetDepth() == 1 )
{
// Mono bitmaps are handled in special way -- all 1s are drawn in
// foreground colours, all 0s in background colour.
wxFAIL_MSG( _T("drawing mono bitmaps not implemented") );
return;
}
if ( useMask && bmp.GetMask() )
{
// FIXME_DFB: see MGL sources for a way to do it, but it's not directly
// applicable because DirectFB doesn't implement ROPs; OTOH,
// it has blitting modes that can be useful; finally, see
// DFB's SetSrcBlendFunction() and SetSrcColorKey()
wxFAIL_MSG( _T("drawing bitmaps with masks not implemented") );
return;
}
DoBlitFromSurface(bmp.GetDirectFBSurface(),
x, y,
w, h,
destx, desty);
}
bool wxDFBDCImpl::DoBlit(wxCoord xdest, wxCoord ydest,
wxCoord width, wxCoord height,
wxDC *source, wxCoord xsrc, wxCoord ysrc,
wxRasterOperationMode rop, bool useMask,
wxCoord xsrcMask, wxCoord ysrcMask)
{
wxCHECK_MSG( IsOk(), false, "invalid dc" );
wxCHECK_MSG( source, false, "invalid source dc" );
// NB: we could also support XOR here (via DSBLIT_XOR)
// and possibly others via SetSrc/DstBlendFunction()
wxCHECK_MSG( rop == wxCOPY, false, "only wxCOPY function supported" );
// transform the source DC coords to the device ones
xsrc = source->LogicalToDeviceX(xsrc);
ysrc = source->LogicalToDeviceY(ysrc);
// FIXME_DFB: use the mask origin when drawing transparently
wxASSERT_MSG( xsrcMask == -1 && ysrcMask == -1,
"non-default source mask offset not implemented" );
#if 0
if (xsrcMask == -1 && ysrcMask == -1)
{
xsrcMask = xsrc; ysrcMask = ysrc;
}
else
{
xsrcMask = source->LogicalToDeviceX(xsrcMask);
ysrcMask = source->LogicalToDeviceY(ysrcMask);
}
#endif
wxMemoryDC *sourceAsMemDC = wxDynamicCast(source, wxMemoryDC);
if ( sourceAsMemDC )
{
DoDrawSubBitmap(sourceAsMemDC->GetSelectedBitmap(),
xsrc, ysrc,
width, height,
xdest, ydest,
rop,
useMask);
}
else
{
return DoBlitFromSurface
(
static_cast<wxDFBDCImpl *>(source->GetImpl())
->GetDirectFBSurface(),
xsrc, ysrc,
width, height,
xdest, ydest
);
}
return true;
}
