Overview | Package | Class | Use | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## org.faceless.pdf2
Class SpotColorSpace

    java.lang.Object
      java.awt.color.ColorSpace
          org.faceless.pdf2.SpotColorSpace

All Implemented Interfaces:
  Serializable

    public final class SpotColorSpace

extends ColorSpace

A type of `ColorSpace` dealing with Separation ("Spot") Colors.

Spot colors are used to define an exact color in the printed output. This is usually done by printing these colors using a matching ink onto a separate film, ink which may be outside the gamut of the normal CMYK printing process. Commonly used Spot colors include those from the PANTONE™ and Focoltone™ range of colors.

Every Spot colorspace has a name, which is the name used by the printer to identify the ink. Because not every output device may have the specified ink available (displaying the PDF on screen for example), every Spot color must have a "fallback" color specified as a process color (RGB or CMYK) as well. Remembering that not every spot color can be reproduced in CMYK, the fallback color is often just a close match.

Like normal colorspaces (RGB, CMYK and so on), different colors can be specified within this space, although they will all be just a different intensity of the specified ink - ranging from zero (no ink is applied) to one (the full intensity of the specified color is applied).

Here's an example showing how to use the PANTONE™ color "PANTONE Reflex Blue" to print a line of text.

       Color fallback = CYMKColorSpace.getColor(1.0, 0.72, 0, 0.06);
       SpotColorSpace blueink = new SpotColorSpace("PANTONE Reflex Blue CVC", fallback);
       Color logoblue = blueink.getColor(1);

       PDFStyle style = new PDFStyle();
       style.setFillColor(logoblue);
       page.setStyle(style);
       page.drawText("This is in PANTONE Reflex Blue CVC", 100, 100);

Note the three stages. First we create the fallback color, specified in CMYK. As it happens this spot color is outside the gamut of the CMYK colorspace, so our fallback is an approximation only. Then we create the colorspace, and finally we select a color which is this ink at 100% intensity. From there we can just use the color as normal.

### Registration Colors

The special color "All" can be used to create a "registration color" - objects drawn in this color will appear on all plates, including the process color plates, and this feature is commonly used for printer marks.

In the PDF specification Spot color is referred to as a "Separation" color.

Since:
  1.1.5

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
`SpotColorSpace(String name, Color color)` Create a new SpotColorSpace representing a single custom ink.

Method Summary
`boolean` | `equals(Object o)`
`float[]` | `fromCIEXYZ(float[] xyz)` Theoretically transforms a color value assumed to be in the XYZ ColorSpace into values in this ColorSpace.
`float[]` | `fromRGB(float[] rgb)` Theoretically transforms a color value assumed to be in the sRGB ColorSpace into values in this ColorSpace.
`Color` | `getColor()` A convenience method returning the color specified by the full intensity of this colorspace.
`Color` | `getColor(float amt)` A convenience method to return a color from this ColorSpace.
`Color` | `getColor(float amt, float alpha)` A convenience method to return a color from this ColorSpace.
`String` | `getName()` Get the name of this colorspace
`String` | `getName(int i)` Returns the name of the component given the component index.
`int` | `getNumComponents()` Returns the number of components of this ColorSpace.
`int` | `hashCode()`
`float[]` | `toCIEXYZ(float[] colorvalue)` Transforms a color value assumed to be in this ColorSpace into the CIEXUZ values.
`float[]` | `toRGB(float[] colorvalue)` Transforms a color value assumed to be in this ColorSpace into a value in the default CS_sRGB color space.
`int[]` | `toRGB(int[] in, int[] out)`
`String` | `toString()`

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

Methods inherited from class java.lang.Object
`getClass, notify, notifyAll, wait, wait, wait`

Constructor Detail

### SpotColorSpace

    public SpotColorSpace(String name,
                          Color color)

  Create a new SpotColorSpace representing a single custom ink.

  Parameters:
    `name` - the name of the ink
    `color` - the color to use as a fallback color if this ink is not available. Must be from either an RGB, CMYK or Grayscale ColorSpace, or an `IllegalArgumentException` is thrown.

Method Detail

### toRGB

    public int[] toRGB(int[] in,
                       int[] out)

### getName

    public String getName()

  Get the name of this colorspace

### getColor

    public Color getColor()

  A convenience method returning the color specified by the full intensity of this colorspace. Equivalent to `getColor(1)`.

### getColor

    public Color getColor(float amt)

  A convenience method to return a color from this ColorSpace.

  Parameters:
    `amt` - The intensity of the color. Any value between zero and one, where zero means no ink at all and one means the full intensity. If the number is outside this range, an `IllegalArgumentException` is thrown
  Throws:
    `IllegalArgumentException`

### getColor

    public Color getColor(float amt,
                          float alpha)

  A convenience method to return a color from this ColorSpace.

  Parameters:
    `amt` - The intensity of the color. Any value between zero and one, where zero means no ink at all and one means the full intensity. If the number is outside this range, an `IllegalArgumentException` is thrown
    `alpha` - the alpha value of this color - 0 meaning transparent, 1 meaning opaque. If the number is outside this range, an `IllegalArgumentException` is thrown
  Throws:
    `IllegalArgumentException`
  Since:
    2.0.5

### getName

    public String getName(int i)

  Returns the name of the component given the component index.

  Overrides:
    `getName` in class `ColorSpace`
  Parameters:
    `i` - the component index
  Returns:
    the name of the component at the specified index

### getNumComponents

    public int getNumComponents()

  Returns the number of components of this ColorSpace.

  Overrides:
    `getNumComponents` in class `ColorSpace`
  Returns:
    the number of components in this ColorSpace

### toString

    public String toString()

  Overrides:
    `toString` in class `Object`

### toRGB

    public float[] toRGB(float[] colorvalue)

  Transforms a color value assumed to be in this ColorSpace into a value in the default CS_sRGB color space. Calls `toRGB` on the fallback colorspace.

  Specified by:
    `toRGB` in class `ColorSpace`
  Parameters:
    `colorvalue` - a float array with length of at least the number of components in this ColorSpace
  Returns:
    a float array of length 3

### toCIEXYZ

    public float[] toCIEXYZ(float[] colorvalue)

  Transforms a color value assumed to be in this ColorSpace into the CIEXUZ values. Calls `toCIEXYZ` on the fallback colorspace.

  Specified by:
    `toCIEXYZ` in class `ColorSpace`
  Parameters:
    `colorvalue` - a float array with length of at least the number of components in this ColorSpace
  Returns:
    a float array of length 3

### fromRGB

    public float[] fromRGB(float[] rgb)

  Theoretically transforms a color value assumed to be in the sRGB ColorSpace into values in this ColorSpace. In practice this can't easily be done and isn't useful, so throws an UnsupportedOperationException.

  Specified by:
    `fromRGB` in class `ColorSpace`
  Parameters:
    `rgb` - a float array with length of at least 3

### fromCIEXYZ

    public float[] fromCIEXYZ(float[] xyz)

  Theoretically transforms a color value assumed to be in the XYZ ColorSpace into values in this ColorSpace. In practice this can't easily be done and isn't useful, so throws an UnsupportedOperationException.

  Specified by:
    `fromCIEXYZ` in class `ColorSpace`
  Parameters:
    `xyz` - a float array with length of at least 3

### equals

    public boolean equals(Object o)

  Overrides:
    `equals` in class `Object`

### hashCode

    public int hashCode()

  Overrides:
    `hashCode` in class `Object`

Overview | Package | Class | Use | Tree | Deprecated | Index | Help
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

Copyright © 2001-2012 Big Faceless Organization