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Structure tree parsing finalization

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Jakub Melka
2020-07-24 19:47:21 +02:00
parent 707f68fa19
commit 5d0b485d4e
2 changed files with 166 additions and 0 deletions
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78
PdfForQtLib/sources/pdfstructuretree.h
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@ -212,6 +212,8 @@ private:
class PDFStructureTree;
class PDFStructureItem;
class PDFStructureElement;
class PDFStructureObjectReference;
class PDFStructureMarkedContentReference;
using PDFStructureItemPointer = QSharedPointer<PDFStructureItem>;
@ -263,6 +265,12 @@ public:
virtual PDFStructureElement* asStructureElement() { return nullptr; }
virtual const PDFStructureElement* asStructureElement() const { return nullptr; }
virtual PDFStructureMarkedContentReference* asStructureMarkedContentReference() { return nullptr; }
virtual const PDFStructureMarkedContentReference* asStructureMarkedContentReference() const { return nullptr; }
virtual PDFStructureObjectReference* asStructureObjectReference() { return nullptr; }
virtual const PDFStructureObjectReference* asStructureObjectReference() const { return nullptr; }
const PDFStructureItem* getParent() const { return m_parent; }
const PDFStructureTree* getTree() const { return m_root; }
PDFObjectReference getSelfReference() const { return m_selfReference; }
@ -445,6 +453,76 @@ private:
QByteArray m_phoneticAlphabet;
};
/// Structure marked content reference
class PDFStructureMarkedContentReference : public PDFStructureItem
{
public:
explicit inline PDFStructureMarkedContentReference(PDFStructureItem* parent, PDFStructureTree* root) :
PDFStructureItem(parent, root)
{
}
virtual PDFStructureMarkedContentReference* asStructureMarkedContentReference() override { return this; }
virtual const PDFStructureMarkedContentReference* asStructureMarkedContentReference() const override { return this; }
const PDFObjectReference& getPageReference() const { return m_pageReference; }
const PDFObjectReference& getContentStreamReference() const { return m_contentStreamReference; }
const PDFObjectReference& getContentStreamOwnerReference() const { return m_contentStreamOwnerReference; }
PDFInteger getMarkedContentIdentifier() const { return m_markedContentIdentifier; }
/// Parses structure marked content reference from the object. If error occurs, nullptr is returned.
/// \param storage Storage
/// \param object Structure marked content reference
/// \param context Visited items context
/// \param parent Parent structure tree item
/// \param root Structure tree root
static PDFStructureItemPointer parseMarkedContentReference(const PDFObjectStorage* storage,
PDFObject object,
PDFMarkedObjectsContext* context,
PDFStructureItem* parent,
PDFStructureTree* root);
private:
PDFObjectReference m_pageReference;
PDFObjectReference m_contentStreamReference;
PDFObjectReference m_contentStreamOwnerReference;
PDFInteger m_markedContentIdentifier = 0;
};
/// Structure object reference
class PDFStructureObjectReference : public PDFStructureItem
{
public:
explicit inline PDFStructureObjectReference(PDFStructureItem* parent, PDFStructureTree* root) :
PDFStructureItem(parent, root)
{
}
virtual PDFStructureObjectReference* asStructureObjectReference() override { return this; }
virtual const PDFStructureObjectReference* asStructureObjectReference() const override { return this; }
const PDFObjectReference& getPageReference() const { return m_pageReference; }
const PDFObjectReference& getObjectReference() const { return m_objectReference; }
/// Parses structure object reference from the object. If error occurs, nullptr is returned.
/// \param storage Storage
/// \param object Structure marked content reference
/// \param context Visited items context
/// \param parent Parent structure tree item
/// \param root Structure tree root
static PDFStructureItemPointer parseObjectReference(const PDFObjectStorage* storage,
PDFObject object,
PDFMarkedObjectsContext* context,
PDFStructureItem* parent,
PDFStructureTree* root);
private:
PDFObjectReference m_pageReference;
PDFObjectReference m_objectReference;
};
} // namespace pdf
#endif // PDFSTRUCTURETREE_H