LabColorSpace Class

class LabColorSpace : ColorSpace

Namespace:com::datalogics::PDFL

Inherits from:: ColorSpace

Detailed Description

A Lab color space is a CIE-based ABC color space with two transformation stages. In this type of space, A, B, and C represent the L*, a*, and b* components of a CIE 1976 L*a*b* space. The range of the first (L*) component is always 0 to 100; the ranges of the second and third (a* and b*) components are defined by the Range.

Uses types

ColorSpace PDFObject

Constructor & Destructor Documentation

LabColorSpace(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 Lab color space.

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

The range defaults to [-100 100 -100 100]

LabColorSpace(java.util.List< Double > whitePoint, java.util.List< Double > blackPoint, java.util.List< Double > range)

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.
range: java.util.List< Double >: An array of four numbers [ amin amax bmin bmax ] specifying the range of valid values for the a* and b* (B and C) components of the color space.

Create a Lab color space.

Field Documentation

static DEVICE_CMYK

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

static DEVICE_GRAY

The DeviceGray color space, representing a single grayscale component.

static DEVICE_RGB

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

static DEVICE_RGBA

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

static LAB

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

static LAB_A

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

Member Function Documentation

synchronized void delete(Boolean disposing)

Parameters

disposing: Boolean

Returns:

synchronized void

synchronized void delete()

Returns:

synchronized void

boolean equals(Object rhs)

Parameters

rhs: Object

Returns:

boolean

void finalize()

Returns:

void

java.util.List< Double > getBlackPoint()

Returns:

java.util.List< Double >

An array of three doubles representing the X, Y, and Z tristimulus values of the black point.

The black point tristimulus value for this Lab color space. 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. If no black point was specified during construction, the default value [0.0, 0.0, 0.0] is returned.

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.

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.

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.

java.util.List< Double > getRange()

Returns:

java.util.List< Double >

An array of four doubles specifying the minimum and maximum values for a* and b*.

The range of valid values for the a* and b* components. An array of four numbers [ amin amax bmin bmax ] specifying the range of valid values for the a* and b* (B and C) components of the color space. If no range was specified during construction, the default value [-100, 100, -100, 100] is returned.

java.util.List< Double > getWhitePoint()

Returns:

java.util.List< Double >

An array of three doubles representing the X, Y, and Z tristimulus values of the white point.

The white point tristimulus value for this Lab color space. 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.

String toString()

Returns:

String

A string describing this ColorSpace.

Convert a ColorSpace to a string representation.