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Structure tree parsing

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This commit is contained in:
Jakub Melka
2020-07-18 19:46:42 +02:00
parent a21f185e89
commit 0a62ad618d
7 changed files with 399 additions and 17 deletions
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22
PdfForQtLib/sources/pdfcatalog.h
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@ -95,7 +95,7 @@ public:
bool operator<(const PDFPageLabel& other) const { return m_pageIndex < other.m_pageIndex; }
/// Parses page label object from PDF object, according to PDF Reference 1.7, Table 8.10
static PDFPageLabel parse(PDFInteger pageIndex, const PDFDocument* document, const PDFObject& object);
static PDFPageLabel parse(PDFInteger pageIndex, const PDFObjectStorage* storage, const PDFObject& object);
private:
NumberingStyle m_numberingType;
@ -380,6 +380,15 @@ public:
const PDFAction* getDocumentAction(DocumentAction action) const { return m_documentActions.at(action).get(); }
const PDFObject& getMetadata() const { return m_metadata; }
/// Is document marked to have structure tree conforming to tagged document convention?
bool isLogicalStructureMarked() const { return m_markInfoFlags.testFlag(MarkInfo_Marked); }
/// Is document marked to have structure tree with user attributes?
bool isLogicalStructureUserPropertiesUsed() const { return m_markInfoFlags.testFlag(MarkInfo_UserProperties); }
/// Is document marked to have structure tree not completely conforming to standard?
bool isLogicalStructureSuspects() const { return m_markInfoFlags.testFlag(MarkInfo_Suspects); }
/// Returns destination using the key. If destination with the key is not found,
/// then nullptr is returned.
/// \param key Destination key
@ -391,6 +400,16 @@ public:
static PDFCatalog parse(const PDFObject& catalog, const PDFDocument* document);
private:
enum MarkInfoFlag : uint8_t
{
MarkInfo_None = 0x0000,
MarkInfo_Marked = 0x0001, ///< Document conforms to tagged PDF convention
MarkInfo_UserProperties = 0x0002, ///< Structure tree contains user properties
MarkInfo_Suspects = 0x0004, ///< Suspects
};
Q_DECLARE_FLAGS(MarkInfoFlags, MarkInfoFlag)
QByteArray m_version;
PDFViewerPreferences m_viewerPreferences;
std::vector<PDFPage> m_pages;
@ -407,6 +426,7 @@ private:
PDFDocumentSecurityStore m_documentSecurityStore;
std::vector<PDFArticleThread> m_threads;
PDFObject m_metadata;
MarkInfoFlags m_markInfoFlags = MarkInfo_None;
// Maps from Names dictionary
std::map<QByteArray, PDFDestination> m_destinations;