diff options
Diffstat (limited to 'libqpdf/QPDFOutlineDocumentHelper.cc')
-rw-r--r-- | libqpdf/QPDFOutlineDocumentHelper.cc | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/libqpdf/QPDFOutlineDocumentHelper.cc b/libqpdf/QPDFOutlineDocumentHelper.cc new file mode 100644 index 00000000..411ccf34 --- /dev/null +++ b/libqpdf/QPDFOutlineDocumentHelper.cc @@ -0,0 +1,137 @@ +#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"); + while (! cur.isNull()) + { + 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::list<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::list<QPDFOutlineObjectHelper> kids = oh.getKids(); + queue.insert(queue.end(), kids.begin(), kids.end()); + } +} + +std::list<QPDFOutlineObjectHelper> +QPDFOutlineDocumentHelper::getOutlinesForPage(QPDFObjGen const& og) +{ + if (this->m->by_page.empty()) + { + initializeByPage(); + } + std::list<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); + } + } + } + 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; +} |