Class SpotColorSpace
- java.lang.Object
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- java.awt.color.ColorSpace
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- org.faceless.pdf2.DeviceNColorSpace
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- org.faceless.pdf2.SpotColorSpace
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- All Implemented Interfaces:
Serializable
public final class SpotColorSpace extends DeviceNColorSpace
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,
CMYK
orLab
) as well. Remembering that not every spot color can be reproduced in CMYK, the fallback color is often just a close match unless aLab
color is used.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
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Nested Class Summary
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Nested classes/interfaces inherited from class org.faceless.pdf2.DeviceNColorSpace
DeviceNColorSpace.Builder
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Field Summary
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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
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Constructor Summary
Constructors Constructor Description SpotColorSpace(String name, Color color)
Create a new SpotColorSpace representing a single custom ink.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description 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.SpotColorSpace
getComponentColorSpace(int component)
Get the Component ColorSpace for an individual spot color in the ColorSpace.String
getName()
Get the name of this ColorSpace (which is the name of the Ink)int[]
toRGB(int[] in, int[] out, int intent)
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Methods inherited from class org.faceless.pdf2.DeviceNColorSpace
equals, fromCIEXYZ, fromRGB, getColor, getColorConvertOp, getFallbackColorSpace, getMaxValue, getMinValue, getName, getNames, getNumComponents, hashCode, isAdditive, isProcessComponent, remap, toCIEXYZ, toFallback, toRGB, toString
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Methods inherited from class java.awt.color.ColorSpace
getInstance, getType, isCS_sRGB
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Constructor Detail
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SpotColorSpace
public SpotColorSpace(String name, Color color)
Create a new SpotColorSpace representing a single custom ink.- Parameters:
name
- the name of the inkcolor
- 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.
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Method Detail
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toRGB
public int[] toRGB(int[] in, int[] out, int intent)
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getName
public String getName()
Get the name of this ColorSpace (which is the name of the Ink)
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getColor
public Color getColor()
A convenience method returning the color specified by the full intensity of this colorspace. Equivalent to getColor(1).
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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
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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 thrownalpha
- 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
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getComponentColorSpace
public SpotColorSpace getComponentColorSpace(int component)
Description copied from class:DeviceNColorSpace
Get the Component ColorSpace for an individual spot color in the ColorSpace. Note that prior to 2.28.4 this method returned null for process components, which is no longer the case.- Overrides:
getComponentColorSpace
in classDeviceNColorSpace
- Parameters:
component
- the component index
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