Package org.apache.pdfbox.pdmodel.graphics.color

Class PDLab

java.lang.Object

org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace

org.apache.pdfbox.pdmodel.graphics.color.PDCIEBasedColorSpace

org.apache.pdfbox.pdmodel.graphics.color.PDCIEDictionaryBasedColorSpace

org.apache.pdfbox.pdmodel.graphics.color.PDLab

All Implemented Interfaces:

COSObjectable

public final class PDLab
extends PDCIEDictionaryBasedColorSpace

A Lab colour space is a CIE-based ABC colour space with two transformation stages.

Author:

Ben Litchfield, John Hewson

Field Summary

Fields inherited from class org.apache.pdfbox.pdmodel.graphics.color.PDCIEDictionaryBasedColorSpace

dictionary, wpX, wpY, wpZ

Fields inherited from class org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace

array

Constructor Summary

Constructors

Constructor	Description
PDLab()	Creates a new Lab color space.
PDLab(COSArray lab)	Creates a new Lab color space from a PDF array.

Method Summary

Modifier and Type	Method	Description
PDRange	getARange()	This will get the valid range for the "a" component.
PDRange	getBRange()	This will get the valid range for the "b" component.
float[]	getDefaultDecode(int bitsPerComponent)	Returns the default decode array for this color space.
PDColor	getInitialColor()	Returns the initial color value for this color space.
java.lang.String	getName()	Returns the name of the color space.
int	getNumberOfComponents()	Returns the number of components in this color space
void	setARange(PDRange range)	This will set the a range for the "a" component.
void	setBRange(PDRange range)	This will set the "b" range for this color space.
float[]	toRGB(float[] value)	Returns the RGB equivalent of the given color value.
java.awt.image.BufferedImage	toRGBImage(java.awt.image.WritableRaster raster)	Returns the (A)RGB equivalent of the given raster.

Methods inherited from class java.lang.Object

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

Methods inherited from class org.apache.pdfbox.pdmodel.graphics.color.PDCIEBasedColorSpace

toString

Methods inherited from class org.apache.pdfbox.pdmodel.graphics.color.PDCIEDictionaryBasedColorSpace

convXYZtoRGB, getBlackPoint, getWhitepoint, setBlackPoint, setWhitePoint

Methods inherited from class org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace

create, create, create, getCOSObject, toRGBImageAWT

Constructor Detail

PDLab

public PDLab()

Creates a new Lab color space.

PDLab

public PDLab(COSArray lab)

Creates a new Lab color space from a PDF array.

Parameters:

lab - the color space array

Method Detail

getName

public java.lang.String getName()

Description copied from class: PDColorSpace

Returns the name of the color space.

Specified by:

getName in class PDColorSpace

Returns:

the name of the color space

toRGBImage

public java.awt.image.BufferedImage toRGBImage(java.awt.image.WritableRaster raster)
                                        throws java.io.IOException

Description copied from class: PDColorSpace

Returns the (A)RGB equivalent of the given raster.

Overrides:

toRGBImage in class PDCIEBasedColorSpace

Parameters:

raster - the source raster

Returns:

an (A)RGB buffered image

Throws:

java.io.IOException - if the color conversion fails

toRGB

public float[] toRGB(float[] value)

Description copied from class: PDColorSpace

Returns the RGB equivalent of the given color value.

Specified by:

toRGB in class PDColorSpace

Parameters:

value - a color value with component values between 0 and 1

Returns:

an array of R,G,B value between 0 and 255

getNumberOfComponents

public int getNumberOfComponents()

Description copied from class: PDColorSpace

Returns the number of components in this color space

Specified by:

getNumberOfComponents in class PDColorSpace

Returns:

the number of components in this color space

getDefaultDecode

public float[] getDefaultDecode(int bitsPerComponent)

Description copied from class: PDColorSpace

Returns the default decode array for this color space.

Specified by:

getDefaultDecode in class PDColorSpace

Parameters:

bitsPerComponent - the number of bits per component.

Returns:

the default decode array

getInitialColor

public PDColor getInitialColor()

Description copied from class: PDColorSpace

Returns the initial color value for this color space.

Specified by:

getInitialColor in class PDColorSpace

Returns:

the initial color value for this color space

getARange

public PDRange getARange()

This will get the valid range for the "a" component. If none is found then the default will be returned, which is -100..100.

Returns:

the "a" range.

getBRange

public PDRange getBRange()

This will get the valid range for the "b" component. If none is found then the default will be returned, which is -100..100.

Returns:

the "b" range.

setARange

public void setARange(PDRange range)

This will set the a range for the "a" component.

Parameters:

range - the new range for the "a" component, or null if defaults (-100..100) are to be set.

setBRange

public void setBRange(PDRange range)

This will set the "b" range for this color space.

Parameters:

range - the new range for the "b" component, or null if defaults (-100..100) are to be set.