at.knowcenter.wag.egov.egiz.pdf
Class PDFPage

java.lang.Object
  org.pdfbox.util.PDFStreamEngine
      org.pdfbox.util.PDFTextStripper
          at.knowcenter.wag.egov.egiz.pdf.PDFPage

public class PDFPage
extends PDFTextStripper

PDFPage is an inner class that is used to calculate the page length of a PDF Document page. It extends the PDFTextStripper class and implement one interested method: showCharacter(TextPosition)
This method is called when processing the FileStream. By calling the method PDFStreamEngine.processStream(org.pdfbox.pdmodel.PDPage, org.pdfbox.pdmodel.PDResources, org.pdfbox.cos.COSStream) the implemented method showCharacter is called.

Author:

wlackner

See Also:

PDFTextStripper

Nested Class Summary

class

PDFPage.MyInvoke

Nested classes/interfaces inherited from class org.pdfbox.util.PDFStreamEngine

PDFStreamEngine.StreamResources

Field Summary

protected float	footer_line The y coordinate of the footer line.
protected float	max_character_ypos The maximum (lowest) y position of a character.
protected float	max_image_ypos The maximum (lowest y position of an image.

Fields inherited from class org.pdfbox.util.PDFTextStripper

charactersByArticle, output

Fields inherited from class org.pdfbox.util.PDFStreamEngine

fontToAverageWidths, graphicsStack, operators, page, SPACE_BYTES, streamResourcesStack, textLineMatrix, textMatrix

Constructor Summary

PDFPage(float footer_line)
Constructor.

Method Summary

static float	findMaxX(Pos[] coordinates)
static float	findMinX(Pos[] coordinates)
static float	findMinY(Pos[] coordinates)
float	getMaxPageLength() Returns the calculated page length.
protected void	processOperator(PDFOperator operator, List arguments) This is used to handle an operation.
protected void	showCharacter(TextPosition text) A method provided as an event interface to allow a subclass to perform some specific functionality when a character needs to be displayed.
static Pos	transtormCoordinate(Pos pos, Matrix m)
static Pos[]	transtormCoordinates(Pos[] coordinates, Matrix m)

Methods inherited from class org.pdfbox.util.PDFTextStripper

endDocument, endPage, endParagraph, flushText, getCharactersByArticle, getCurrentPageNo, getEndBookmark, getEndPage, getLineSeparator, getOutput, getPageSeparator, getStartBookmark, getStartPage, getText, getText, getWordSeparator, processPage, processPages, setEndBookmark, setEndPage, setLineSeparator, setPageSeparator, setShouldSeparateByBeads, setSortByPosition, setStartBookmark, setStartPage, setSuppressDuplicateOverlappingText, setWordSeparator, shouldSeparateByBeads, shouldSortByPosition, shouldSuppressDuplicateOverlappingText, startDocument, startPage, startParagraph, writeCharacters, writeText, writeText

Methods inherited from class org.pdfbox.util.PDFStreamEngine

getColorSpaces, getCurrentPage, getFonts, getGraphicsStack, getGraphicsState, getGraphicsStates, getResources, getTextLineMatrix, getTextMatrix, getXObjects, processOperator, processStream, processSubStream, setColorSpaces, setFonts, setGraphicsStack, setGraphicsState, setGraphicsStates, setTextLineMatrix, setTextMatrix, showString

Methods inherited from class java.lang.Object

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

Field Detail

max_character_ypos

protected float max_character_ypos

The maximum (lowest) y position of a character.

max_image_ypos

protected float max_image_ypos

The maximum (lowest y position of an image.

footer_line

protected float footer_line

The y coordinate of the footer line. PDF elements below this footer line will not be regarded.

Constructor Detail

PDFPage

public PDFPage(float footer_line)
        throws IOException

Constructor.

Parameters:

footer_line - The y coordinate of the footer line. PDF elements below this footer line will not be regarded.

Throws:

IOException

Method Detail

processOperator

protected void processOperator(PDFOperator operator,
                               List arguments)
                        throws IOException

Description copied from class: PDFStreamEngine

This is used to handle an operation.

Overrides:

processOperator in class PDFStreamEngine

Parameters:

operator - The operation to perform.

arguments - The list of arguments.

Throws:

IOException - If there is an error processing the operation.

showCharacter

protected void showCharacter(TextPosition text)

A method provided as an event interface to allow a subclass to perform some specific functionality when a character needs to be displayed. This method is used to calculate the latest position of a text in the page. Sorry for this missinterpretation of the method, but it is the only way to do this (provided by PDFBox)!!!

Overrides:

showCharacter in class PDFTextStripper

Parameters:

text - the character to be displayed -> calculate there y position.

getMaxPageLength

public float getMaxPageLength()

Returns the calculated page length.

Returns:

the max page length value

transtormCoordinates

public static Pos[] transtormCoordinates(Pos[] coordinates,
                                         Matrix m)

transtormCoordinate

public static Pos transtormCoordinate(Pos pos,
                                      Matrix m)

findMinY

public static float findMinY(Pos[] coordinates)

findMaxX

public static float findMaxX(Pos[] coordinates)

findMinX

public static float findMinX(Pos[] coordinates)