com.lowagie.text.pdf.parser

Class PdfContentStreamProcessor

java.lang.Object

com.lowagie.text.pdf.parser.PdfContentStreamProcessor

Direct Known Subclasses:

SimpleTextExtractingPdfContentStreamProcessor

public abstract class PdfContentStreamProcessor
extends Object

Processor for a PDF content Stream.

Since:

2.1.4

Constructor Summary

Constructors

Constructor and Description
PdfContentStreamProcessor() Creates a new PDF Content Stream Processor.

Method Summary

Modifier and Type	Method and Description
void	displayPdfString(PdfString string, float tj) Displays text.
abstract void	displayText(String text, Matrix nextTextMatrix) Displays text.
Matrix	getCurrentTextLineMatrix() Returns the current line matrix.
Matrix	getCurrentTextMatrix() Returns the current text matrix.
float	getStringWidth(String string, float tj) Gets the width of a String.
GraphicsState	gs() Returns the current graphics state.
void	invokeOperator(PdfLiteral operator, ArrayList operands) Invokes an operator.
void	processContent(byte[] contentBytes, PdfDictionary resources) Processes PDF syntax
void	registerContentOperator(String operatorString, ContentOperator operator) Registers a content operator that will be called when the specified operator string is encountered during content processing.
void	reset() Resets the graphics state stack, matrices and resources.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PdfContentStreamProcessor

public PdfContentStreamProcessor()

Creates a new PDF Content Stream Processor.

Method Detail

registerContentOperator

public void registerContentOperator(String operatorString,
                                    ContentOperator operator)

Registers a content operator that will be called when the specified operator string is encountered during content processing. Each operator may be registered only once (it is not legal to have multiple operators with the same operatorString)

Parameters:

operatorString - the operator id

operator - the operator that will receive notification when the operator is encountered

Since:

2.1.8

reset

public void reset()

Resets the graphics state stack, matrices and resources.

gs

public GraphicsState gs()

Returns the current graphics state.

Returns:

the graphics state

getCurrentTextMatrix

public Matrix getCurrentTextMatrix()

Returns the current text matrix.

Returns:

the text matrix

Since:

2.1.5

getCurrentTextLineMatrix

public Matrix getCurrentTextLineMatrix()

Returns the current line matrix.

Returns:

the line matrix

Since:

2.1.5

invokeOperator

public void invokeOperator(PdfLiteral operator,
                           ArrayList operands)

Invokes an operator.

Parameters:

operator - the PDF Syntax of the operator

operands - a list with operands

displayText

public abstract void displayText(String text,
                                 Matrix nextTextMatrix)

Displays text.

Parameters:

text - the text that needs to be displayed

nextTextMatrix - a text matrix

getStringWidth

public float getStringWidth(String string,
                            float tj)

Gets the width of a String.

Parameters:

string - the string that needs measuring

tj - text adjustment

Returns:

the width of a String

displayPdfString

public void displayPdfString(PdfString string,
                             float tj)

Displays text.

Parameters:

string - the text to display

tj - the text adjustment

processContent

public void processContent(byte[] contentBytes,
                           PdfDictionary resources)

Processes PDF syntax

Parameters:

contentBytes - the bytes of a content stream

resources - the resources that come with the content stream