Package org.apache.pdfbox.preflight.font.util

Class PreflightType3Stream

java.lang.Object

org.apache.pdfbox.contentstream.PDFStreamEngine

org.apache.pdfbox.preflight.content.PreflightStreamEngine

org.apache.pdfbox.preflight.font.util.PreflightType3Stream

public class PreflightType3Stream
extends PreflightStreamEngine

This class is used to parse a glyph of a Type3 font program. If the glyph is parsed without error, the width of the glyph is accessible through the getWidth method.

Field Summary

Fields

Modifier and Type	Field	Description
private BoundingBox	box
private final PDType3CharProc	charProc
private boolean	firstOperator
private PDInlineImage	image
private float	width

Fields inherited from class org.apache.pdfbox.preflight.content.PreflightStreamEngine

context, cosDocument, processedPage

Constructor Summary

Constructors

Constructor	Description
PreflightType3Stream(PreflightContext context, PDPage page, PDType3CharProc charProc)

Method Summary

Modifier and Type	Method	Description
private void	checkType3FirstOperator(List<COSBase> arguments)	According to the PDF Reference, the first operator in a CharProc of a Type3 font must be "d0" or "d1".
Image	createImage()	This will parse a type3 stream and create an image from it.
float	getWidth()
protected void	processOperator(Operator operator, List<COSBase> operands)	This is used to handle an operation.
void	showType3Character(PDType3CharProc charProc)

Methods inherited from class org.apache.pdfbox.preflight.content.PreflightStreamEngine

checkColorOperators, checkSetColorSpaceOperators, registerError, registerError, registerError, registerError, validateInlineImageColorSpace, validateInlineImageFilter, validateNumberOfGraphicStates, validateRenderingIntent

Methods inherited from class org.apache.pdfbox.contentstream.PDFStreamEngine

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

Methods inherited from class java.lang.Object

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

Field Details

charProc

private final PDType3CharProc charProc

firstOperator

private boolean firstOperator

width

private float width

image

private PDInlineImage image

box

private BoundingBox box

Constructor Details

PreflightType3Stream

public PreflightType3Stream(PreflightContext context,
 PDPage page,
 PDType3CharProc charProc)

Method Details

showType3Character

public void showType3Character(PDType3CharProc charProc)
                        throws IOException

Throws:

IOException

createImage

public Image createImage()
                  throws IOException

This will parse a type3 stream and create an image from it.

Returns:

The image that was created.

Throws:

IOException - If there is an error processing the stream.

processOperator

protected void processOperator(Operator operator,
 List<COSBase> operands)
                        throws IOException

This is used to handle an operation.

Overrides:

processOperator in class PDFStreamEngine

Parameters:

operator - The operation to perform.

operands - The list of arguments.

Throws:

IOException - If there is an error processing the operation.

checkType3FirstOperator

private void checkType3FirstOperator(List<COSBase> arguments)
                              throws IOException

According to the PDF Reference, the first operator in a CharProc of a Type3 font must be "d0" or "d1". This method process this validation. This method is called by the processOperator method.

Parameters:

arguments -

Throws:

IOException

getWidth

public float getWidth()

Returns:

the width of the CharProc glyph description