com.itextpdf.kernel.pdf.function

Class PdfType4Function

java.lang.Object

com.itextpdf.kernel.pdf.PdfObjectWrapper

com.itextpdf.kernel.pdf.function.AbstractPdfFunction<PdfStream>

com.itextpdf.kernel.pdf.function.PdfType4Function

All Implemented Interfaces:

IPdfFunction

public class PdfType4Function
extends AbstractPdfFunction<PdfStream>

Constructor Summary

Constructors

Constructor and Description
PdfType4Function(double[] domain, double[] range, byte[] code)
PdfType4Function(PdfStream dict)

Method Summary

Modifier and Type	Method and Description
double[]	calculate(double[] input) Calculates one set of input components to one set of output components.
boolean	checkCompatibilityWithColorSpace(PdfColorSpace alternateSpace) Chacks wether the output of the function matches in components with the passed by color space.
protected boolean	isWrappedObjectMustBeIndirect() Defines if the object behind this wrapper must be an indirect object in the resultant document.

Methods inherited from class com.itextpdf.kernel.pdf.function.AbstractPdfFunction

calculateFromByteArray, calculateFromByteArray, clip, clipInput, clipOutput, getAsPdfObject, getDomain, getFunctionType, getInputSize, getOutputSize, getRange, normalize, setDomain, setRange

Methods inherited from class com.itextpdf.kernel.pdf.PdfObjectWrapper

ensureObjectIsAddedToDocument, ensureUnderlyingObjectHasIndirectReference, flush, getPdfObject, isFlushed, makeIndirect, makeIndirect, markObjectAsIndirect, setForbidRelease, setModified, setPdfObject, unsetForbidRelease

Methods inherited from class java.lang.Object

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

Constructor Detail

PdfType4Function

public PdfType4Function(PdfStream dict)

PdfType4Function

public PdfType4Function(double[] domain,
                        double[] range,
                        byte[] code)

Method Detail

checkCompatibilityWithColorSpace

public boolean checkCompatibilityWithColorSpace(PdfColorSpace alternateSpace)

Description copied from class: AbstractPdfFunction

Chacks wether the output of the function matches in components with the passed by color space.

Specified by:

checkCompatibilityWithColorSpace in interface IPdfFunction

Overrides:

checkCompatibilityWithColorSpace in class AbstractPdfFunction<PdfStream>

Parameters:

alternateSpace - The color space to verify against

Returns:

True when compatible

calculate

public double[] calculate(double[] input)

Description copied from interface: IPdfFunction

Calculates one set of input components to one set of output components.

Parameters:

input - The input values size must contain IPdfFunction.getInputSize() items

Returns:

an array the size of IPdfFunction.getOutputSize() items containing the result

isWrappedObjectMustBeIndirect

protected boolean isWrappedObjectMustBeIndirect()

Description copied from class: PdfObjectWrapper

Defines if the object behind this wrapper must be an indirect object in the resultant document.

If this method returns true it doesn't necessarily mean that object must be in the indirect state at any moment, but rather defines that when the object will be written to the document it will be transformed into indirect object if it's not indirect yet.

Return value of this method shouldn't depend on any logic, it should return always true or false.

Specified by:

isWrappedObjectMustBeIndirect in class PdfObjectWrapper<PdfStream>

Returns:

true if in the resultant document the object behind the wrapper must be indirect, otherwise false.