org.jpedal.parser

Class PdfStreamDecoder

java.lang.Object

org.jpedal.parser.BaseDecoder

org.jpedal.parser.PdfStreamDecoder

Direct Known Subclasses:

PdfStreamDecoderForPattern, PdfStreamDecoderForPrinting, PdfStreamDecoderForSampling, T3StreamDecoder

public class PdfStreamDecoder
extends BaseDecoder

Contains the code which 'parses' the commands in the stream and extracts the data (images and text). Users should not need to call it.

Field Summary

Fields

Modifier and Type	Field and Description
protected StructuredContentHandler	contentHandler
static float	currentThreshold
protected ImageHandler	customImageHandler
protected boolean	getSamplingOnly
boolean	ignoreColors shows if t3 glyph uses internal colour or current colour
protected static String	indent used to debug
protected boolean	isDataValid show if possible error in stream data
protected GraphicsState	newGS
protected ObjectStore	objectStoreStreamRef
protected byte[]	pageStream
static boolean	showCommands internal development flag which should not be used
static boolean	useTextPrintingForNonEmbeddedFonts

Fields inherited from class org.jpedal.parser.BaseDecoder

current, GenerateGlyphOnRender, gs, isHTML, multiplyer, parserOptions, streamType

Constructor Summary

Constructors

Constructor and Description
PdfStreamDecoder(PdfObjectReader currentPdfFile)
PdfStreamDecoder(PdfObjectReader currentPdfFile, PdfLayerList layers) create new StreamDecoder to create display

Method Summary

Modifier and Type	Method and Description
T3Size	decodePageContent(PdfObject pdfObject) objects off the page, stitch into a stream and decode and put into our data object.
String	decodeStreamIntoObjects(byte[] stream, boolean returnText) decode the actual 'Postscript' stream into text and images by extracting commands and decoding each.
void	dispose()
int	getBlendMode()
boolean	getBooleanValue(int key) return boolean flags with appropriate ket
PdfObjectCache	getObjectCache()
Object	getObjectValue(int key) return the data
void	incrementTokenNumber()
void	readResources(PdfObject Resources, boolean resetList) read page header and extract page metadata
void	setBBox(float[] BBox) pass in BBox so we can work out if we ignore scaling
void	setBooleanValue(int key, boolean value) NOT PART OF API tells software to generate glyph when first rendered not when decoded.
void	setDefaultColors(PdfPaint strokeCol, PdfPaint nonstrokeCol) used internally to allow for colored streams
void	setFormLevel(int value)
void	setIntValue(int key, int value)
void	setObjectValue(int key, Object obj)
void	setParameters(boolean isPageContent, boolean renderPage, int renderMode, int extractionMode, boolean isPrinting, boolean useJavaFX)
void	setXMLExtraction(boolean isXMLExtraction)

Methods inherited from class org.jpedal.parser.BaseDecoder

setGS, setMultiplyer, setParams, setRenderer, setStreamType

Methods inherited from class java.lang.Object

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

Field Detail

contentHandler

protected StructuredContentHandler contentHandler

newGS

protected GraphicsState newGS

pageStream

protected byte[] pageStream

getSamplingOnly

protected boolean getSamplingOnly

ignoreColors

public boolean ignoreColors

shows if t3 glyph uses internal colour or current colour

currentThreshold

public static final float currentThreshold

See Also:

Constant Field Values

customImageHandler

protected ImageHandler customImageHandler

showCommands

public static final boolean showCommands

internal development flag which should not be used

See Also:

Constant Field Values

indent

protected static String indent

used to debug

isDataValid

protected boolean isDataValid

show if possible error in stream data

objectStoreStreamRef

protected ObjectStore objectStoreStreamRef

useTextPrintingForNonEmbeddedFonts

public static boolean useTextPrintingForNonEmbeddedFonts

Constructor Detail

PdfStreamDecoder

public PdfStreamDecoder(PdfObjectReader currentPdfFile)

PdfStreamDecoder

public PdfStreamDecoder(PdfObjectReader currentPdfFile,
                        PdfLayerList layers)

create new StreamDecoder to create display

Method Detail

decodePageContent

public T3Size decodePageContent(PdfObject pdfObject)
                         throws PdfException

objects off the page, stitch into a stream and decode and put into our data object. Could be altered if you just want to read the stream

Parameters:

pdfObject -

Throws:

PdfException

setObjectValue

public void setObjectValue(int key,
                           Object obj)

setBooleanValue

public void setBooleanValue(int key,
                            boolean value)

NOT PART OF API tells software to generate glyph when first rendered not when decoded. Should not need to be called in general usage

Parameters:

key -

value -

setDefaultColors

public void setDefaultColors(PdfPaint strokeCol,
                             PdfPaint nonstrokeCol)

used internally to allow for colored streams

getObjectValue

public Object getObjectValue(int key)

return the data

readResources

public final void readResources(PdfObject Resources,
                                boolean resetList)
                         throws PdfException

read page header and extract page metadata

Throws:

PdfException

decodeStreamIntoObjects

public String decodeStreamIntoObjects(byte[] stream,
                                      boolean returnText)

decode the actual 'Postscript' stream into text and images by extracting commands and decoding each.

getBooleanValue

public boolean getBooleanValue(int key)

return boolean flags with appropriate ket

dispose

public void dispose()

setIntValue

public void setIntValue(int key,
                        int value)

setXMLExtraction

public void setXMLExtraction(boolean isXMLExtraction)

setParameters

public void setParameters(boolean isPageContent,
                          boolean renderPage,
                          int renderMode,
                          int extractionMode,
                          boolean isPrinting,
                          boolean useJavaFX)

setFormLevel

public void setFormLevel(int value)

getObjectCache

public PdfObjectCache getObjectCache()

setBBox

public void setBBox(float[] BBox)

pass in BBox so we can work out if we ignore scaling

Parameters:

BBox -

getBlendMode

public int getBlendMode()

incrementTokenNumber

public void incrementTokenNumber()