Package com.tom_roush.pdfbox.text

Class PDFMarkedContentExtractor

java.lang.Object

com.tom_roush.pdfbox.contentstream.PDFStreamEngine

com.tom_roush.pdfbox.text.PDFMarkedContentExtractor

public class PDFMarkedContentExtractor
extends PDFStreamEngine

This is an stream engine to extract the marked content of a pdf.

Constructor Summary

Constructors

Constructor	Description
PDFMarkedContentExtractor()	Instantiate a new PDFTextStripper object.
PDFMarkedContentExtractor(String encoding)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	beginMarkedContentSequence(COSName tag, COSDictionary properties)
void	endMarkedContentSequence()
List<PDMarkedContent>	getMarkedContents()
void	processPage(PDPage page)	This will initialise and process the contents of the stream.
protected void	processTextPosition(TextPosition text)	This will process a TextPosition object and add the text to the list of characters on a page.
protected void	showGlyph(Matrix textRenderingMatrix, PDFont font, int code, String unicode, Vector displacement)	This method was originally written by Ben Litchfield for PDFStreamEngine.
protected void	showText(byte[] string)	Process text from the PDF Stream.
void	xobject(PDXObject xobject)

Methods inherited from class java.lang.Object

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

Methods inherited from class com.tom_roush.pdfbox.contentstream.PDFStreamEngine

addOperator, applyTextAdjustment, beginText, endText, getAppearance, getCurrentPage, getGraphicsStackSize, getGraphicsState, getInitialMatrix, getResources, getTextLineMatrix, getTextMatrix, operatorException, processAnnotation, processChildStream, processOperator, processOperator, processSoftMask, processTilingPattern, processTilingPattern, processTransparencyGroup, processType3Stream, registerOperatorProcessor, restoreGraphicsStack, restoreGraphicsState, saveGraphicsStack, saveGraphicsState, setLineDashPattern, setTextLineMatrix, setTextMatrix, showAnnotation, showFontGlyph, showForm, showTextString, showTextStrings, showTransparencyGroup, showType3Glyph, transformedPoint, transformWidth, unsupportedOperator

Constructor Detail

PDFMarkedContentExtractor

public PDFMarkedContentExtractor()
                          throws IOException

Instantiate a new PDFTextStripper object.

Throws:

IOException

PDFMarkedContentExtractor

public PDFMarkedContentExtractor(String encoding)
                          throws IOException

Constructor. Will apply encoding-specific conversions to the output text.

Parameters:

encoding - The encoding that the output will be written in.

Throws:

IOException

Method Detail

beginMarkedContentSequence

public void beginMarkedContentSequence(COSName tag,
                                       COSDictionary properties)

endMarkedContentSequence

public void endMarkedContentSequence()

xobject

public void xobject(PDXObject xobject)

processTextPosition

protected void processTextPosition(TextPosition text)

This will process a TextPosition object and add the text to the list of characters on a page. It takes care of overlapping text.

Parameters:

text - The text to process.

getMarkedContents

public List<PDMarkedContent> getMarkedContents()

processPage

public void processPage(PDPage page)
                 throws IOException

This will initialise and process the contents of the stream.

Overrides:

processPage in class PDFStreamEngine

Parameters:

page - the page to process

Throws:

IOException - if there is an error accessing the stream.

showText

protected void showText(byte[] string)
                 throws IOException

Description copied from class: PDFStreamEngine

Process text from the PDF Stream. You should override this method if you want to perform an action when encoded text is being processed.

Overrides:

showText in class PDFStreamEngine

Parameters:

string - the encoded text

Throws:

IOException - if there is an error processing the string

showGlyph

protected void showGlyph(Matrix textRenderingMatrix,
                         PDFont font,
                         int code,
                         String unicode,
                         Vector displacement)
                  throws IOException

This method was originally written by Ben Litchfield for PDFStreamEngine.

Overrides:

showGlyph in class PDFStreamEngine

Parameters:

textRenderingMatrix - the current text rendering matrix, T_rm

font - the current font

code - internal PDF character code for the glyph

unicode - the Unicode text for this glyph, or null if the PDF does provide it

displacement - the displacement (i.e. advance) of the glyph in text space

Throws:

IOException - if the glyph cannot be processed