PoDoFo::PdfXRef Class Reference

#include <PdfXRef.h>

Inheritance diagram for PoDoFo::PdfXRef:

List of all members.

Public Member Functions
	PdfXRef ()
virtual	~PdfXRef ()
void	AddObject (const PdfReference &rRef, pdf_uint64 offset, bool bUsed)
void	Write (PdfOutputDevice *pDevice)
pdf_uint32	GetSize () const
virtual pdf_uint64	GetOffset () const
Protected Member Functions
virtual void	BeginWrite (PdfOutputDevice *pDevice)
virtual void	WriteSubSection (PdfOutputDevice *pDevice, pdf_objnum nFirst, pdf_uint32 nCount)
virtual void	WriteXRefEntry (PdfOutputDevice *pDevice, pdf_uint64 offset, pdf_gennum generation, char cMode, pdf_objnum objectNumber=0)
virtual void	EndWrite (PdfOutputDevice *pDevice)

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Detailed Description

Creates an XRef table.

This is an internal class of PoDoFo used by PdfWriter.

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Constructor & Destructor Documentation

PoDoFo::PdfXRef::PdfXRef

(

)

Create a new XRef table

PoDoFo::PdfXRef::~PdfXRef

(

)

[virtual]

Destruct the XRef table

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Member Function Documentation

void PoDoFo::PdfXRef::AddObject	(	const PdfReference &	rRef,
		pdf_uint64	offset,
		bool	bUsed
	)

Add an object to the XRef table. The object should have been written to an output device already.

Parameters:

	rRef	reference of this object
	offset	the offset where on the device the object was written
	bUsed	specifies wether this is an used or free object. Set this value to true for all normal objects and to false for free object references.

void PoDoFo::PdfXRef::BeginWrite

(

PdfOutputDevice *

pDevice

)

[protected, virtual]

Called at the start of writing the XRef table. This method can be overwritten in subclasses to write a general header for the XRef table.

Parameters:

pDevice

the output device to which the XRef table should be written.

Reimplemented in PoDoFo::PdfXRefStream.

void PoDoFo::PdfXRef::EndWrite

(

PdfOutputDevice *

pDevice

)

[protected, virtual]

Called at the end of writing the XRef table. Sub classes can overload this method to finish a XRef table.

Parameters:

pDevice

the output device to which the XRef table should be written.

Reimplemented in PoDoFo::PdfXRefStream.

pdf_uint64 PoDoFo::PdfXRef::GetOffset

(

)

const [inline, virtual]

Returns:

the offset in the file at which the XRef table starts after it was written

Reimplemented in PoDoFo::PdfXRefStream.

pdf_uint32 PoDoFo::PdfXRef::GetSize

(

)

const

Get the size of the XRef table. I.e. the highest object number + 1.

Returns:

the size of the xref table

void PoDoFo::PdfXRef::Write

(

PdfOutputDevice *

pDevice

)

Write the XRef table to an output device.

Parameters:

pDevice

an output device (usually a PDF file)

void PoDoFo::PdfXRef::WriteSubSection	(	PdfOutputDevice *	pDevice,
		pdf_objnum	nFirst,
		pdf_uint32	nCount
	)			[protected, virtual]

Begin an XRef subsection. All following calls of WriteXRefEntry belong to this XRef subsection.

Parameters:

	pDevice	the output device to which the XRef table should be written.
	nFirst	the object number of the first object in this subsection
	nCount	the number of entries in this subsection

Reimplemented in PoDoFo::PdfXRefStream.

void PoDoFo::PdfXRef::WriteXRefEntry	(	PdfOutputDevice *	pDevice,
		pdf_uint64	offset,
		pdf_gennum	generation,
		char	cMode,
		pdf_objnum	objectNumber = 0
	)			[protected, virtual]

Write a single entry to the XRef table

Parameters:

	pDevice	the output device to which the XRef table should be written.
	offset	the offset of the object
	generation	the generation number
	cMode	the mode 'n' for object and 'f' for free objects
	objectNumber	the object number of the currently written object if cMode = 'n' otherwise undefined

Reimplemented in PoDoFo::PdfXRefStream.

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