/*----------------------------------------------------------------------------------------------
Return the size of the text, in points.
----------------------------------------------------------------------------------------------*/
float FwGrTxtSrc::getVerticalOffset(toffset ich)
{
LgCharRenderProps lgchrp;
int ichMinBogus, ichLimBogus;
GrResult res = (GrResult)m_qts->GetCharProps(GrToVwOffset(ich), &lgchrp, &ichMinBogus, &ichLimBogus);
int dympOffset = lgchrp.dympOffset;
if(lgchrp.ssv != kssvOff)
{
// psuedo device context works since we are getting proportions which are invariant
HDC hdc = ::CreateDC(TEXT("DISPLAY"),NULL,NULL,NULL);
IVwGraphicsWin32Ptr qvgW;
qvgW.CreateInstance(CLSID_VwGraphicsWin32);
qvgW->Initialize(hdc);
IVwGraphicsPtr qvg;
CheckHr(qvgW->QueryInterface(IID_IVwGraphics, (void **) &qvg));
CheckHr(qvg->SetupGraphics(&lgchrp));
if (lgchrp.ssv == kssvSuper)
{
int dSuperscriptYOffsetNumerator;
int dSuperscriptYOffsetDenominator;
CheckHr(qvg->GetSuperscriptYOffsetRatio(&dSuperscriptYOffsetNumerator, &dSuperscriptYOffsetDenominator));
dympOffset += gr::GrEngine::GrIntMulDiv(lgchrp.dympHeight, dSuperscriptYOffsetNumerator, dSuperscriptYOffsetDenominator);
}
else if (lgchrp.ssv == kssvSub)
{
int dSubscriptYOffsetNumerator;
int dSubscriptYOffsetDenominator;
CheckHr(qvg->GetSubscriptYOffsetRatio(&dSubscriptYOffsetNumerator, &dSubscriptYOffsetDenominator));
dympOffset -= gr::GrEngine::GrIntMulDiv(lgchrp.dympHeight, dSubscriptYOffsetNumerator, dSubscriptYOffsetDenominator);
}
qvgW.Clear();
qvg.Clear();
::DeleteDC(hdc);
}
return (float)(dympOffset / 1000);
}
