PdfMemDocument is the core class for reading and manipulating PDF files and writing them back to disk. More...

#include <PdfMemDocument.h>

Inheritance diagram for PoDoFo::PdfMemDocument:

Public Member Functions
	PdfMemDocument ()
	Construct a new PdfMemDocument.

	PdfMemDocument (const std::shared_ptr< InputStreamDevice > &device, const std::string_view &password={ })

	PdfMemDocument (const PdfMemDocument &rhs)
	Construct a copy of the given document.

void	Load (const std::string_view &filename, const std::string_view &password={ })
	Load a PdfMemDocument from a file.

void	LoadFromBuffer (const bufferview &buffer, const std::string_view &password={ })
	Load a PdfMemDocument from a buffer in memory.

void	Load (const std::shared_ptr< InputStreamDevice > &device, const std::string_view &password={ })
	Load a PdfMemDocument from a PdfRefCountedInputDevice.

void	Save (const std::string_view &filename, PdfSaveOptions opts=PdfSaveOptions::None)
	Save the complete document to a file.

void	Save (OutputStreamDevice &device, PdfSaveOptions opts=PdfSaveOptions::None)
	Save the complete document to an output device.

void	SaveUpdate (const std::string_view &filename, PdfSaveOptions opts=PdfSaveOptions::None)
	Save the document changes to a file.

void	SaveUpdate (OutputStreamDevice &device, PdfSaveOptions opts=PdfSaveOptions::None)
	Save the document changes to an output device.

void	SetEncrypted (const std::string_view &userPassword, const std::string_view &ownerPassword, PdfPermissions protection=PdfPermissions::Default, PdfEncryptionAlgorithm algorithm=PdfEncryptionAlgorithm::AESV3R6, PdfKeyLength keyLength=PdfKeyLength::Unknown)
	Encrypt the document during writing.

void	SetEncrypt (std::unique_ptr< PdfEncrypt > &&encrypt)
	Encrypt the document during writing using a PdfEncrypt object.

const PdfEncrypt *	GetEncrypt () const override

Public Member Functions inherited from PoDoFo::PdfDocument
virtual	~PdfDocument ()
	Close down/destruct the PdfDocument.

PdfOutlines &	GetOrCreateOutlines ()
	Get access to the Outlines (Bookmarks) dictionary The returned outlines object is owned by the PdfDocument.

PdfNameTrees &	GetOrCreateNames ()
	Get access to the Names dictionary (where all the named objects are stored) The returned PdfNameTrees object is owned by the PdfDocument.

PdfAcroForm &	GetOrCreateAcroForm (PdfAcroFormDefaulAppearance eDefaultAppearance=PdfAcroFormDefaulAppearance::ArialBlack)
	Get access to the AcroForm dictionary.

void	CollectGarbage ()

std::unique_ptr< PdfImage >	CreateImage ()
	Construct a new PdfImage object.

std::unique_ptr< PdfXObjectForm >	CreateXObjectForm (const Rect &rect)

std::unique_ptr< PdfDestination >	CreateDestination ()

std::unique_ptr< PdfColorSpace >	CreateColorSpace (const PdfColorSpaceFilterPtr &filter)

std::unique_ptr< PdfFunction >	CreateFunction (const PdfFunctionDefinitionPtr &definition)

std::unique_ptr< PdfUncolouredTilingPattern >	CreateTilingPattern (const std::shared_ptr< PdfUncolouredTilingPatternDefinition > &definition)

std::unique_ptr< PdfColouredTilingPattern >	CreateTilingPattern (const std::shared_ptr< PdfColouredTilingPatternDefinition > &definition)

std::unique_ptr< PdfShadingPattern >	CreateShadingPattern (const PdfShadingPatternDefinitionPtr &definition)

std::unique_ptr< PdfShadingDictionary >	CreateShadingDictionary (const PdfShadingDefinitionPtr &definition)

std::unique_ptr< PdfExtGState >	CreateExtGState (const PdfExtGStateDefinitionPtr &definition)

template<typename Taction >
std::unique_ptr< Taction >	CreateAction ()

std::unique_ptr< PdfAction >	CreateAction (PdfActionType type)

std::unique_ptr< PdfFileSpec >	CreateFileSpec ()

bool	IsPrintAllowed () const
	Checks if printing this document is allowed.

bool	IsEditAllowed () const
	Checks if modifying this document (besides annotations, form fields or substituting pages) is allowed.

bool	IsCopyAllowed () const
	Checks if text and graphics extraction is allowed.

bool	IsEditNotesAllowed () const
	Checks if it is allowed to add or modify annotations or form fields.

bool	IsFillAndSignAllowed () const
	Checks if it is allowed to fill in existing form or signature fields.

bool	IsAccessibilityAllowed () const
	Checks if it is allowed to extract text and graphics to support users with disabilities.

bool	IsDocAssemblyAllowed () const
	Checks if it is allowed to insert, create, rotate, or delete pages or add bookmarks.

bool	IsHighPrintAllowed () const
	Checks if it is allowed to print a high quality version of this document Every PDF-consuming application has to adhere to this value!

void	PushPdfExtension (const PdfExtension &extension)
	Add a vendor-specific extension to the current PDF version.

bool	HasPdfExtension (const std::string_view &ns, int64_t level) const
	Checks whether the documents is tagged to imlpement a vendor-specific extension to the current PDF version.

void	RemovePdfExtension (const std::string_view &ns, int64_t level)
	Remove a vendor-specific extension to the current PDF version.

std::vector< PdfExtension >	GetPdfExtensions () const
	Return the list of all vendor-specific extensions to the current PDF version.

PdfAcroForm &	MustGetAcroForm ()

const PdfAcroForm &	MustGetAcroForm () const

PdfNameTrees &	MustGetNames ()

const PdfNameTrees &	MustGetNames () const

PdfOutlines &	MustGetOutlines ()

const PdfOutlines &	MustGetOutlines () const

PdfDocumentFieldIterable	GetFieldsIterator ()
	Get an iterator for all fields in the document.

PdfDocumentConstFieldIterable	GetFieldsIterator () const

void	Reset ()
	Clear all internal structures and reset PdfDocument to an empty state.

bool	IsEncrypted () const

PdfCatalog &	GetCatalog ()
	Get access to the internal Catalog dictionary or root object.

const PdfCatalog &	GetCatalog () const
	Get access to the internal Catalog dictionary or root object.

PdfPageCollection &	GetPages ()
	Get access to the page tree.

const PdfPageCollection &	GetPages () const
	Get access to the page tree.

PdfTrailer &	GetTrailer ()
	Get access to the internal trailer dictionary or root object.

const PdfTrailer &	GetTrailer () const
	Get access to the internal trailer dictionary or root object.

const PdfInfo *	GetInfo () const
	Get access to the internal Info dictionary You can set the author, title etc.

PdfMetadata &	GetMetadata ()

const PdfMetadata &	GetMetadata () const

PdfIndirectObjectList &	GetObjects ()
	Get access to the internal vector of objects or root object.

const PdfIndirectObjectList &	GetObjects () const
	Get access to the internal vector of objects or root object.

PdfAcroForm *	GetAcroForm ()

const PdfAcroForm *	GetAcroForm () const

PdfNameTrees *	GetNames ()

const PdfNameTrees *	GetNames () const

PdfOutlines *	GetOutlines ()

const PdfOutlines *	GetOutlines () const

PdfFontManager &	GetFonts ()

template<typename TAction >
std::unique_ptr< TAction >	CreateAction ()

Protected Member Functions
void	SetPdfVersion (PdfVersion version) override
	Set the PDF Version of the document.

PdfVersion	GetPdfVersion () const override
	Get the PDF version of the document.

Protected Member Functions inherited from PoDoFo::PdfDocument
void	SetTrailer (std::unique_ptr< PdfObject > obj)
	Set the trailer of this PdfDocument deleting the old one.

void	Init ()
	Internal method for initializing the pages tree for this document.

void	Clear ()
	Clear all variables that have internal memory usage.

Detailed Description

PdfMemDocument is the core class for reading and manipulating PDF files and writing them back to disk.

PdfMemDocument was designed to allow easy access to the object structure of a PDF file.

PdfMemDocument should be used whenever you want to change the object structure of a PDF file.

When you are only creating PDF files, please use PdfStreamedDocument which is usually faster for creating PDFs.

See also: PdfDocument; PdfStreamedDocument; PdfParser

Member Function Documentation

◆ GetEncrypt()

const PdfEncrypt * PdfMemDocument::GetEncrypt ( ) const

overridevirtual

Implements PoDoFo::PdfDocument.

◆ GetPdfVersion()

PdfVersion PdfMemDocument::GetPdfVersion ( ) const

overrideprotectedvirtual

Get the PDF version of the document.

Returns: PdfVersion version of the pdf document

Implements PoDoFo::PdfDocument.

◆ Load() [1/2]

void PoDoFo::PdfMemDocument::Load	(	const std::shared_ptr< InputStreamDevice > &	device,
		const std::string_view &	password = `{ }`
	)

Load a PdfMemDocument from a PdfRefCountedInputDevice.

Parameters

device the input device containing the PDF

See also: WriteUpdate, Load, LoadFromBuffer

◆ Load() [2/2]

void PoDoFo::PdfMemDocument::Load	(	const std::string_view &	filename,
		const std::string_view &	password = `{ }`
	)

Load a PdfMemDocument from a file.

Parameters

filename filename of the file which is going to be parsed/opened

When the bForUpdate is set to true, the filename is copied for later use by WriteUpdate.

See also: WriteUpdate, LoadFromBuffer, LoadFromDevice

◆ LoadFromBuffer()

void PdfMemDocument::LoadFromBuffer	(	const bufferview &	buffer,
		const std::string_view &	password = `{ }`
	)

Load a PdfMemDocument from a buffer in memory.

Parameters

buffer a memory area containing the PDF data

See also: WriteUpdate, Load, LoadFromDevice

◆ Save() [1/2]

void PoDoFo::PdfMemDocument::Save	(	const std::string_view &	filename,
		PdfSaveOptions	opts = `PdfSaveOptions::None`
	)

Save the complete document to a file.

Parameters

filename filename of the document

See also: Save, SaveUpdate

This is an overloaded member function for your convenience.

◆ Save() [2/2]

void PdfMemDocument::Save	(	OutputStreamDevice &	device,
		PdfSaveOptions	opts = `PdfSaveOptions::None`
	)

Save the complete document to an output device.

Parameters

device write to this output device

See also: SaveUpdate

◆ SaveUpdate() [1/2]

void PoDoFo::PdfMemDocument::SaveUpdate	(	const std::string_view &	filename,
		PdfSaveOptions	opts = `PdfSaveOptions::None`
	)

Save the document changes to a file.

Parameters

filename filename of the document

Writes the document changes to a file as an incremental update. The document should be loaded with bForUpdate = true, otherwise an exception is thrown.

Beware when overwriting existing files. Plain file overwrite is allowed only if the document was loaded with the same filename (and the same overloaded function), otherwise the destination file cannot be the same as the source file, because the destination file is truncated first and only then the source file content is copied into it.

See also: Save, SaveUpdate

This is an overloaded member function for your convenience.

◆ SaveUpdate() [2/2]

void PdfMemDocument::SaveUpdate	(	OutputStreamDevice &	device,
		PdfSaveOptions	opts = `PdfSaveOptions::None`
	)

Save the document changes to an output device.

Parameters

device write to this output device

Writes the document changes to the output device as an incremental update. The document should be loaded with bForUpdate = true, otherwise an exception is thrown.

See also: Save, SaveUpdate

◆ SetEncrypt()

void PdfMemDocument::SetEncrypt ( std::unique_ptr< PdfEncrypt > && encrypt )

Encrypt the document during writing using a PdfEncrypt object.

Parameters

encrypt an encryption object that will be owned by PdfMemDocument

◆ SetEncrypted()

void PdfMemDocument::SetEncrypted	(	const std::string_view &	userPassword,
		const std::string_view &	ownerPassword,
		PdfPermissions	protection = `PdfPermissions::Default`,
		PdfEncryptionAlgorithm	algorithm = `PdfEncryptionAlgorithm::AESV3R6`,
		PdfKeyLength	keyLength = `PdfKeyLength::Unknown`
	)

Encrypt the document during writing.

Parameters

userPassword	the user password (if empty the user does not have to enter a password to open the document)
ownerPassword	the owner password
protection	several PdfPermissions values or'ed together to set the users permissions for this document
algorithm	the revision of the encryption algorithm to be used
keyLength	the length of the encryption key ranging from 40 to 256 bits (only used if algorithm >= PdfEncryptAlgorithm::RC4V2)

See also: PdfEncrypt

◆ SetPdfVersion()

void PdfMemDocument::SetPdfVersion ( PdfVersion version )

overrideprotectedvirtual

Set the PDF Version of the document.

Has to be called before Write() to have an effect.

Parameters

version version of the pdf document

Implements PoDoFo::PdfDocument.

The documentation for this class was generated from the following files:

src/podofo/main/PdfMemDocument.h
src/podofo/main/PdfMemDocument.cpp

Public Member Functions

Protected Member Functions

Detailed Description

Member Function Documentation

◆ GetEncrypt()

◆ GetPdfVersion()

◆ Load() [1/2]

◆ Load() [2/2]

◆ LoadFromBuffer()

◆ Save() [1/2]

◆ Save() [2/2]

◆ SaveUpdate() [1/2]

◆ SaveUpdate() [2/2]

◆ SetEncrypt()

◆ SetEncrypted()

◆ SetPdfVersion()