Class PdfCanvasParser

Namespace

iText.Kernel.Pdf.Canvas.Parser.Util

Assembly

itext.kernel.dll

Parses the page or form XObject content.

public class PdfCanvasParser

Inheritance

object

PdfCanvasParser

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Constructors

PdfCanvasParser(PdfTokenizer)

Creates a new instance of PdfContentParser

public PdfCanvasParser(PdfTokenizer tokeniser)

Parameters

tokeniser PdfTokenizer

the tokeniser with the content

PdfCanvasParser(PdfTokenizer, PdfResources)

Creates a new instance of PdfContentParser

public PdfCanvasParser(PdfTokenizer tokeniser, PdfResources currentResources)

Parameters

tokeniser PdfTokenizer

the tokeniser with the content

currentResources PdfResources

current resources of the content stream. It is optional parameter, which is used for performance improvements of specific cases of inline images parsing.

Methods

GetTokeniser()

Gets the tokeniser.

public virtual PdfTokenizer GetTokeniser()

Returns

PdfTokenizer

the tokeniser.

NextValidToken()

Reads the next token skipping over the comments.

public virtual bool NextValidToken()

Returns

bool

true if a token was read, false if the end of content was reached

Parse(IList<PdfObject>)

Parses a single command from the content.

public virtual IList<PdfObject> Parse(IList<PdfObject> ls)

Parameters

ls IList<PdfObject>

an ArrayList to use. It will be cleared before using. If it's null will create a new ArrayList

Returns

IList<PdfObject>

the same ArrayList given as argument or a new one

Remarks

Parses a single command from the content. Each command is output as an array of arguments having the command itself as the last element. The returned array will be empty if the end of content was reached.
A specific behaviour occurs when inline image is encountered (BI command): in that case, parser would continue parsing until it meets EI - end of the inline image; as a result in this case it will return an array with inline image dictionary and image bytes encapsulated in PdfStream object as first element and EI command as second element.

ReadArray()

Reads an array.

public virtual PdfArray ReadArray()

Returns

PdfArray

an array

Remarks

Reads an array. The tokeniser must be positioned past the "[" token.

ReadDictionary()

Reads a dictionary.

public virtual PdfDictionary ReadDictionary()

Returns

PdfDictionary

the dictionary

Remarks

Reads a dictionary. The tokeniser must be positioned past the "<<" token.

ReadObject()

Reads a pdf object.

public virtual PdfObject ReadObject()

Returns

PdfObject

the pdf object

SetTokeniser(PdfTokenizer)

Sets the tokeniser.

public virtual void SetTokeniser(PdfTokenizer tokeniser)

Parameters

tokeniser PdfTokenizer

the tokeniser