ElementReader.h

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//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2024 by Apryse Software Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------
#ifndef PDFTRON_H_CPPPDFElementReader
#define PDFTRON_H_CPPPDFElementReader

#include <PDF/Page.h>
#include <PDF/Element.h>
#include <PDF/OCG/Context.h>
#include <Common/Iterator.h>
#include <C/PDF/TRN_ElementReader.h>


namespace pdftron { 
    namespace PDF {

        
typedef Common::Iterator<int> GSChangesIterator; 


typedef TRN_CharData CharData;
    
class ElementReader
{
public:

    ElementReader();
    ~ElementReader();

    void Begin(const Page& page, OCG::Context* ocg_context = 0);    

    void Begin(SDF::Obj content_stream, SDF::Obj resource_dict = 0, OCG::Context* ocg_context = 0);

    Element Next();

    Element Current();

    void FormBegin();

    void PatternBegin(bool fill_pattern, bool reset_ctm_tfm = false);

    void Type3FontBegin(CharData& char_data, SDF::Obj resource_dict = 0);

    bool End();

    GSChangesIterator GetChangesIterator();

    bool IsChanged(GState::GStateAttribute attrib); 

    void ClearChangeList();

    void AppendResource(SDF::Obj res);

    SDF::Obj GetFont (const char* name);

    SDF::Obj GetXObject (const char* name);     

    SDF::Obj GetShading(const char* name);

    SDF::Obj GetColorSpace (const char* name);

    SDF::Obj GetPattern (const char* name);

    SDF::Obj GetExtGState (const char* name);

     void Destroy();

// @cond PRIVATE_DOC
#ifndef SWIGHIDDEN
    ElementReader(TRN_ElementReader impl);
    TRN_ElementReader mp_reader;
#endif
private:
    ElementReader(const ElementReader&);
    ElementReader& operator= (const ElementReader&);
// @endcond
};



#include <Impl/ElementReader.inl>

    };  // namespace PDF
};  // namespace pdftron

#endif // PDFTRON_H_CPPPDFElementReader