CalGrayColorSpace Class Documentation

class CalGrayColorSpace : ColorSpace

Namespace:com::datalogics::PDFL

Inherits from:
ColorSpace

Detailed Description

A calibrated gray color space. A CalGray color space is a special case of a single-component CIE-based color space, known as a CIE-based A color space.

This type of space is the one-dimensional (and usually achromatic) analog of CIE-based ABC spaces.

Constructor & Destructor Documentation

CalGrayColorSpace

CalGrayColorSpace(java.util.List< Double > whitePoint)

Parameters

whitePoint: java.util.List< Double >

An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse white point. The numbers X and Z must be positive, and Y must be equal to 1.0.

Create a CalGray color space.

The blackPoint defaults to [0.0, 0.0, 0.0].

The gamma defaults to 1

CalGrayColorSpace

CalGrayColorSpace(java.util.List< Double > whitePoint, java.util.List< Double > blackPoint, double gamma)

Parameters

whitePoint: java.util.List< Double >

An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse white point. The numbers X and Z must be positive, and Y must be equal to 1.0.

blackPoint: java.util.List< Double >

An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse black point. All three of these numbers must be non-negative.

gamma: double

A number G defining the gamma for the gray component. G must be positive and is generally greater than or equal to 1.

Create a CalGray color space.

Field Documentation

DEVICE_CMYK

static DEVICE_CMYK

The DeviceCMYK color space, representing cyan, magenta, yellow, and black components.

DEVICE_GRAY

static DEVICE_GRAY

The DeviceGray color space, representing a single grayscale component.

DEVICE_RGB

static DEVICE_RGB

The DeviceRGB color space, representing red, green, and blue components.

DEVICE_RGBA

static DEVICE_RGBA

The DeviceRGBA color space, representing red, green, blue, and alpha components.

LAB

static LAB

The CIE-based L*a*b* color space.

LAB_A

static LAB_A

The CIE-based L*a*b* color space with an alpha component.

Member Function Documentation

delete

synchronized void delete(Boolean disposing)

Parameters

disposing: Boolean

Returns:

synchronized void

delete

synchronized void delete()

Returns:

synchronized void

equals

boolean equals(Object rhs)

Parameters

rhs: Object

Returns:

boolean

finalize

void finalize()

Returns:

void

getBlackPoint

java.util.List< Double > getBlackPoint()

Returns:

java.util.List< Double >

An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse black point. All three of these numbers must be non-negative.

getGamma

double getGamma()

Returns:

double

A number G defining the gamma for the gray component. G must be positive and is generally greater than or equal to 1.

getName

String getName()

Returns:

String

The name of the color space. A named color space may be named something like DeviceRGB. More complicated color spaces may have a name like Indexed or ICCBased.

getNumComponents

int getNumComponents()

Returns:

int

The number of color components.

The number of components in the color space. For example, DeviceGray has 1 component, DeviceRGB has 3, and DeviceCMYK has 4.

getPDFObject

PDFObject getPDFObject()

Returns:

PDFObject

The PDFObject associated with the color space.

Get the PDFObject associated with the color space. This may be a PDFName, PDFDict, PDFStream, or PDFArray.

getWhitePoint

java.util.List< Double > getWhitePoint()

Returns:

java.util.List< Double >

An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse white point. The numbers X and Z must be positive, and Y must be equal to 1.0.

toString

String toString()

Returns:

String

A string describing this ColorSpace.

Convert a ColorSpace to a string representation.