PDFDeviceCMYK

java.lang.Object
- java.awt.color.ColorSpace
- - com.inductiveautomation.rm.pdf.reader.PDFDeviceCMYK

All Implemented Interfaces:

java.io.Serializable
```
public class PDFDeviceCMYK
extends java.awt.color.ColorSpace
```
This is an implementation of the DeviceCMYK colorspace as defined in the pdf spec. Note that there is a CMYK colorspace profile available from Sun in the JAICMM package, but there are several problems with it. First and foremost, it doesn't generate colors that are consistent with Acrobat. Secondly, it is enormous, at 1/2 meg.
The cmyk->rgb conversion is trivial. rgb->cmyk, however, can be arbitrarily complex as custom black-generation and undercolor-removal functions can be specified in the graphics state.
The spec defines the rgb->cmyk conversion like this : UCR(x) = undercolor-removal function BG(x) = black-generation function k = min(1-red, 1-green, 1-blue) cyan = min(1, max(0, 1-red-UCR(k))) magenta = min(1, max(0, 1-green-UCR(k))) yellow = min(1, max(0, 1-blue-UCR(k))) black = min(1, max(0, BG(k)))

See Also:

Serialized Form

Field Summary
- Fields inherited from class java.awt.color.ColorSpace
  CS_CIEXYZ, CS_GRAY, CS_LINEAR_RGB, CS_PYCC, CS_sRGB, TYPE_2CLR, TYPE_3CLR, TYPE_4CLR, TYPE_5CLR, TYPE_6CLR, TYPE_7CLR, TYPE_8CLR, TYPE_9CLR, TYPE_ACLR, TYPE_BCLR, TYPE_CCLR, TYPE_CMY, TYPE_CMYK, TYPE_DCLR, TYPE_ECLR, TYPE_FCLR, TYPE_GRAY, TYPE_HLS, TYPE_HSV, TYPE_Lab, TYPE_Luv, TYPE_RGB, TYPE_XYZ, TYPE_YCbCr, TYPE_Yxy

Constructor Summary

Constructors
Constructor Description

PDFDeviceCMYK()

PDFDeviceCMYK(int type, int numcomponents)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`float[]`	`fromCIEXYZ(float[] colorvalue)`
`float[]`	`fromRGB(float[] rgbvalue)`
`float[]`	`toCIEXYZ(float[] colorvalue)`
`float[]`	`toRGB(float[] colorvalue)`

Methods inherited from class java.awt.color.ColorSpace
getInstance, getMaxValue, getMinValue, getName, getNumComponents, getType, isCS_sRGB

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - PDFDeviceCMYK
```
public PDFDeviceCMYK()
```
  - PDFDeviceCMYK
```
public PDFDeviceCMYK(int type,
                     int numcomponents)
```
- Method Detail
  - toRGB
```
public float[] toRGB(float[] colorvalue)
```
    Specified by:
    
    toRGB in class java.awt.color.ColorSpace
  - fromRGB
```
public float[] fromRGB(float[] rgbvalue)
```
    Specified by:
    
    fromRGB in class java.awt.color.ColorSpace
  - toCIEXYZ
```
public float[] toCIEXYZ(float[] colorvalue)
```
    Specified by:
    
    toCIEXYZ in class java.awt.color.ColorSpace
  - fromCIEXYZ
```
public float[] fromCIEXYZ(float[] colorvalue)
```
    Specified by:
    
    fromCIEXYZ in class java.awt.color.ColorSpace