QPDFOutlineDocumentHelper.cc
3.54 KB
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#include <qpdf/QPDFOutlineDocumentHelper.hh>
#include <qpdf/QTC.hh>
QPDFOutlineDocumentHelper::Members::~Members()
{
}
QPDFOutlineDocumentHelper::Members::Members()
{
}
QPDFOutlineDocumentHelper::QPDFOutlineDocumentHelper(QPDF& qpdf) :
QPDFDocumentHelper(qpdf),
m(new Members())
{
QPDFObjectHandle root = qpdf.getRoot();
if (! root.hasKey("/Outlines"))
{
return;
}
QPDFObjectHandle outlines = root.getKey("/Outlines");
if (! (outlines.isDictionary() && outlines.hasKey("/First")))
{
return;
}
QPDFObjectHandle cur = outlines.getKey("/First");
std::set<QPDFObjGen> seen;
while (! cur.isNull())
{
auto og = cur.getObjGen();
if (seen.count(og))
{
break;
}
seen.insert(og);
this->m->outlines.push_back(
QPDFOutlineObjectHelper::Accessor::create(cur, *this, 1));
cur = cur.getKey("/Next");
}
}
QPDFOutlineDocumentHelper::~QPDFOutlineDocumentHelper()
{
}
bool
QPDFOutlineDocumentHelper::hasOutlines()
{
return ! this->m->outlines.empty();
}
std::vector<QPDFOutlineObjectHelper>
QPDFOutlineDocumentHelper::getTopLevelOutlines()
{
return this->m->outlines;
}
void
QPDFOutlineDocumentHelper::initializeByPage()
{
std::list<QPDFOutlineObjectHelper> queue;
queue.insert(queue.end(), this->m->outlines.begin(), this->m->outlines.end());
while (! queue.empty())
{
QPDFOutlineObjectHelper oh = queue.front();
queue.pop_front();
this->m->by_page[oh.getDestPage().getObjGen()].push_back(oh);
std::vector<QPDFOutlineObjectHelper> kids = oh.getKids();
queue.insert(queue.end(), kids.begin(), kids.end());
}
}
std::vector<QPDFOutlineObjectHelper>
QPDFOutlineDocumentHelper::getOutlinesForPage(QPDFObjGen const& og)
{
if (this->m->by_page.empty())
{
initializeByPage();
}
std::vector<QPDFOutlineObjectHelper> result;
if (this->m->by_page.count(og))
{
result = this->m->by_page[og];
}
return result;
}
QPDFObjectHandle
QPDFOutlineDocumentHelper::resolveNamedDest(QPDFObjectHandle name)
{
QPDFObjectHandle result;
if (name.isName())
{
if (! this->m->dest_dict.isInitialized())
{
this->m->dest_dict = this->qpdf.getRoot().getKey("/Dests");
}
if (this->m->dest_dict.isDictionary())
{
QTC::TC("qpdf", "QPDFOutlineDocumentHelper name named dest");
result = this->m->dest_dict.getKey(name.getName());
}
}
else if (name.isString())
{
if (0 == this->m->names_dest.getPointer())
{
QPDFObjectHandle names = this->qpdf.getRoot().getKey("/Names");
if (names.isDictionary())
{
QPDFObjectHandle dests = names.getKey("/Dests");
if (dests.isDictionary())
{
this->m->names_dest =
new QPDFNameTreeObjectHelper(dests, this->qpdf);
}
}
}
if (this->m->names_dest.getPointer())
{
if (this->m->names_dest->findObject(name.getUTF8Value(), result))
{
QTC::TC("qpdf", "QPDFOutlineDocumentHelper string named dest");
}
}
}
if (! result.isInitialized())
{
result = QPDFObjectHandle::newNull();
}
return result;
}
bool
QPDFOutlineDocumentHelper::checkSeen(QPDFObjGen const& og)
{
if (this->m->seen.count(og) > 0)
{
return true;
}
this->m->seen.insert(og);
return false;
}