com.datalogics.PDFL

Class IndexedColorSpace

java.lang.Object

com.datalogics.PDFL.ColorSpace

com.datalogics.PDFL.IndexedColorSpace

public class IndexedColorSpace
extends ColorSpace

Indexed color spaces are used to reduce the amount of memory used for processing images. Indexed color spaces are used when a limited number of colors are needed.

Commonly, an image with an indexed color space can be one third the size of the same image with a standard color space, because the indexed image uses a smaller palette of colors.

Field Summary

Fields inherited from class com.datalogics.PDFL.ColorSpace

DEVICE_CMYK, DEVICE_GRAY, DEVICE_RGB, DEVICE_RGBA, LAB, LAB_A

Constructor Summary

Constructors

Constructor and Description
IndexedColorSpace(ColorSpace base, int hival, java.util.List<java.lang.Integer> lookup) Create a Indexed color space.

Method Summary

Modifier and Type	Method and Description
void	delete()
ColorSpace	getBase() The base color space in which the values in the color table are to be interpreted.
int	getHiVal() an integer that specifies the maximum valid index value.
java.util.List<java.lang.Integer>	getLookup() A list of integers in the range 0..255.

Methods inherited from class com.datalogics.PDFL.ColorSpace

equals, getName, getNumComponents, getPDFObject, toString

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

IndexedColorSpace

public IndexedColorSpace(ColorSpace base,
                         int hival,
                         java.util.List<java.lang.Integer> lookup)

Create a Indexed color space.

Parameters:

base - The base color space in which the values in the color table are to be interpreted. It can be any device or CIE-based color space or (in PDF 1.3) a Separation or DeviceN space, but not a Pattern space or another Indexed space.

hival - an integer that specifies the maximum valid index value. In other words, the color table is to be indexed by integers in the range 0 to hival. hival can be no greater than 255.

lookup - a list of integers in the range 0..255. There must be m * (hival + 1) values, where m is the number of components of the base color space.

Method Detail

delete

public void delete()

Overrides:

delete in class ColorSpace

getBase

public ColorSpace getBase()

The base color space in which the values in the color table are to be interpreted. It can be any device or CIE-based color space or (in PDF 1.3) a Separation or DeviceN space, but not a Pattern space or another Indexed space.

getHiVal

public int getHiVal()

an integer that specifies the maximum valid index value. In other words, the color table is to be indexed by integers in the range 0 to hival. hival can be no greater than 255.

getLookup

public java.util.List<java.lang.Integer> getLookup()

A list of integers in the range 0..255. There must be m * (hival + 1) values, where m is the number of components of the base color space.