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

Class PDCalGray

java.lang.Object

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

org.apache.pdfbox.pdmodel.graphics.color.PDCalGray

All Implemented Interfaces:

COSObjectable

public class PDCalGray
extends PDColorSpace

This class represents a Cal Gray color space.

Version:

$Revision: 1.5 $

Author:

Ben Litchfield

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	NAME	The name of this color space.

Constructor Summary

Constructors

Constructor	Description
PDCalGray()	Constructor.
PDCalGray(COSArray gray)	Constructor with array.

Method Summary

Modifier and Type	Method	Description
java.awt.image.ColorModel	createColorModel(int bpc)	Create a Java color model for this colorspace.
protected java.awt.color.ColorSpace	createColorSpace()	Create a Java colorspace for this colorspace.
PDTristimulus	getBlackPoint()	This will return the BlackPoint tristimulus.
COSBase	getCOSObject()	Convert this standard java object to a COS object.
float	getGamma()	This will get the gamma value.
java.lang.String	getName()	This will return the name of the color space.
int	getNumberOfComponents()	This will get the number of components that this color space is made up of.
PDTristimulus	getWhitepoint()	This will return the whitepoint tristimulus.
void	setBlackPoint(PDTristimulus bp)	This will set the BlackPoint tristimulus.
void	setGamma(float value)	Set the gamma value.
void	setWhitepoint(PDTristimulus wp)	This will set the whitepoint tristimulus.

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.PDColorSpace

getJavaColorSpace, toString

Field Detail

NAME

public static final java.lang.String NAME

The name of this color space.

See Also:

Constant Field Values

Constructor Detail

PDCalGray

public PDCalGray()

Constructor.

PDCalGray

public PDCalGray(COSArray gray)

Constructor with array.

Parameters:

gray - The underlying color space.

Method Detail

getNumberOfComponents

public int getNumberOfComponents()
                          throws java.io.IOException

This will get the number of components that this color space is made up of.

Specified by:

getNumberOfComponents in class PDColorSpace

Returns:

The number of components in this color space.

Throws:

java.io.IOException - If there is an error getting the number of color components.

getName

public java.lang.String getName()

This will return the name of the color space.

Specified by:

getName in class PDColorSpace

Returns:

The name of the color space.

createColorSpace

protected java.awt.color.ColorSpace createColorSpace()
                                              throws java.io.IOException

Create a Java colorspace for this colorspace.

Specified by:

createColorSpace in class PDColorSpace

Returns:

A color space that can be used for Java AWT operations.

Throws:

java.io.IOException - If there is an error creating the color space.

createColorModel

public java.awt.image.ColorModel createColorModel(int bpc)
                                           throws java.io.IOException

Create a Java color model for this colorspace.

Specified by:

createColorModel in class PDColorSpace

Parameters:

bpc - The number of bits per component.

Returns:

A color model that can be used for Java AWT operations.

Throws:

java.io.IOException - If there is an error creating the color model.

getCOSObject

public COSBase getCOSObject()

Convert this standard java object to a COS object.

Specified by:

getCOSObject in interface COSObjectable

Overrides:

getCOSObject in class PDColorSpace

Returns:

The cos object that matches this Java object.

getGamma

public float getGamma()

This will get the gamma value. If none is present then the default of 1 will be returned.

Returns:

The gamma value.

setGamma

public void setGamma(float value)

Set the gamma value.

Parameters:

value - The new gamma value.

getWhitepoint

public PDTristimulus getWhitepoint()

This will return the whitepoint tristimulus. As this is a required field this will never return null. A default of 1,1,1 will be returned if the pdf does not have any values yet.

Returns:

The whitepoint tristimulus.

setWhitepoint

public void setWhitepoint(PDTristimulus wp)

This will set the whitepoint tristimulus. As this is a required field this null should not be passed into this function.

Parameters:

wp - The whitepoint tristimulus.

getBlackPoint

public PDTristimulus getBlackPoint()

This will return the BlackPoint tristimulus. This is an optional field but has defaults so this will never return null. A default of 0,0,0 will be returned if the pdf does not have any values yet.

Returns:

The blackpoint tristimulus.

setBlackPoint

public void setBlackPoint(PDTristimulus bp)

This will set the BlackPoint tristimulus. As this is a required field this null should not be passed into this function.

Parameters:

bp - The BlackPoint tristimulus.