internal void GetLineDetails(int dcpLine, out int cchContent, out int cchEllipses)
{
// Query paragraph details
PTS.FSTEXTDETAILS textDetails;
PTS.Validate(PTS.FsQueryTextDetails(PtsContext.Context, _paraHandle.Value, out textDetails));
int lineWidth = 0;
bool firstLine = (dcpLine == 0);
int dcpLim = 0;
IntPtr breakRecLine = IntPtr.Zero;
// There are 3 different types of text paragraphs:
// (a) full with simple lines
// (b) full with composite lines - when figures/floaters are present
// (c) cached - when using ParaChache
if (textDetails.fsktd == PTS.FSKTEXTDETAILS.fsktdFull)
{
if (textDetails.u.full.cLines > 0)
{
if (!PTS.ToBoolean(textDetails.u.full.fLinesComposite))
{
// (a) full with simple lines
PTS.FSLINEDESCRIPTIONSINGLE[] arrayLineDesc;
PtsHelper.LineListSimpleFromTextPara(PtsContext, _paraHandle.Value, ref textDetails.u.full, out arrayLineDesc);
// Get lines information
int index;
for (index = 0; index < arrayLineDesc.Length; index++)
{
PTS.FSLINEDESCRIPTIONSINGLE lineDesc = arrayLineDesc[index];
if (dcpLine == lineDesc.dcpFirst)
{
lineWidth = lineDesc.dur;
// Store dcpLim to check that line lengths are in [....]
dcpLim = lineDesc.dcpLim;
breakRecLine = lineDesc.pfsbreakreclineclient;
break;
}
}
}
else
{
// (b) full with composite lines - when figures/floaters are present
PTS.FSLINEDESCRIPTIONCOMPOSITE[] arrayLineDesc;
PtsHelper.LineListCompositeFromTextPara(PtsContext, _paraHandle.Value, ref textDetails.u.full, out arrayLineDesc);
// Get lines information
int index;
for (index = 0; index < arrayLineDesc.Length; index++)
{
PTS.FSLINEDESCRIPTIONCOMPOSITE lineDesc = arrayLineDesc[index];
if (lineDesc.cElements == 0) continue;
// Get list of line elements.
PTS.FSLINEELEMENT[] arrayLineElement;
PtsHelper.LineElementListFromCompositeLine(PtsContext, ref lineDesc, out arrayLineElement);
int elIndex;
for (elIndex = 0; elIndex < arrayLineElement.Length; elIndex++)
{
PTS.FSLINEELEMENT element = arrayLineElement[elIndex];
if (element.dcpFirst == dcpLine)
{
lineWidth = element.dur;
// Store dcpLim to check that line lengths are in [....]
dcpLim = element.dcpLim;
breakRecLine = element.pfsbreakreclineclient;
break;
}
}
if (elIndex < arrayLineElement.Length)
{
firstLine = (index == 0);
break;
}
}
}
}
}
else
{
// (c) cached - when using ParaChache
Invariant.Assert(textDetails.fsktd == PTS.FSKTEXTDETAILS.fsktdCached);
Invariant.Assert(false, "Should not get here. ParaCache is not currently used.");
}
// Recreate text line
Line.FormattingContext ctx = new Line.FormattingContext(false, true, true, TextParagraph.TextRunCache);
Line line = new Line(Paragraph.StructuralCache.TextFormatterHost, this, Paragraph.ParagraphStartCharacterPosition);
if(IsOptimalParagraph)
{
ctx.LineFormatLengthTarget = dcpLim - dcpLine;
}
TextParagraph.FormatLineCore(line, breakRecLine, ctx, dcpLine, lineWidth, firstLine, dcpLine);
// Assert that number of characters in Text line is the same as our expected length
Invariant.Assert(line.SafeLength == dcpLim - dcpLine, "Line length is out of [....]");
cchContent = line.ContentLength;
cchEllipses = line.GetEllipsesLength();
line.Dispose();
}
