Class PDLab
java.lang.Object
org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace
org.apache.pdfbox.pdmodel.graphics.color.PDCIEBasedColorSpace
org.apache.pdfbox.pdmodel.graphics.color.PDCIEDictionaryBasedColorSpace
org.apache.pdfbox.pdmodel.graphics.color.PDLab
- All Implemented Interfaces:
COSObjectable
A Lab colour space is a CIE-based ABC colour space with two transformation stages.
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Field Summary
FieldsFields inherited from class org.apache.pdfbox.pdmodel.graphics.color.PDCIEDictionaryBasedColorSpace
dictionary, wpX, wpY, wpZ
Fields inherited from class org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace
array
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionThis will get the valid range for the "a" component.This will get the valid range for the "b" component.float[]
getDefaultDecode
(int bitsPerComponent) Returns the default decode array for this color space.private COSArray
creates a range array with default values (-100..100 -100..100).Returns the initial color value for this color space.getName()
Returns the name of the color space.int
Returns the number of components in this color spaceprivate float
inverse
(float x) void
This will set the a range for the "a" component.void
This will set the "b" range for this color space.private void
setComponentRangeArray
(PDRange range, int index) toRawImage
(WritableRaster raster) Returns the image in this colorspace or null.float[]
toRGB
(float[] value) Returns the RGB equivalent of the given color value.toRGBImage
(WritableRaster raster) Returns the (A)RGB equivalent of the given raster.Methods inherited from class org.apache.pdfbox.pdmodel.graphics.color.PDCIEDictionaryBasedColorSpace
convXYZtoRGB, getBlackPoint, getWhitepoint, setBlackPoint, setWhitePoint
Methods inherited from class org.apache.pdfbox.pdmodel.graphics.color.PDCIEBasedColorSpace
toString
Methods inherited from class org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace
create, create, create, getCOSObject, toRawImage, toRGBImageAWT
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Field Details
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initialColor
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Constructor Details
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PDLab
public PDLab()Creates a new Lab color space. -
PDLab
Creates a new Lab color space from a PDF array.- Parameters:
lab
- the color space array
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Method Details
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getName
Description copied from class:PDColorSpace
Returns the name of the color space.- Specified by:
getName
in classPDColorSpace
- Returns:
- the name of the color space
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toRGBImage
Description copied from class:PDColorSpace
Returns the (A)RGB equivalent of the given raster.- Overrides:
toRGBImage
in classPDCIEBasedColorSpace
- Parameters:
raster
- the source raster- Returns:
- an (A)RGB buffered image
- Throws:
IOException
- if the color conversion fails
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toRawImage
Description copied from class:PDColorSpace
Returns the image in this colorspace or null. No conversion is performed. For special colorspaces like PDSeparation the image is returned in the gray colorspace. For undefined colorspaces like DeviceCMYK/DeviceRGB and DeviceGray null is returned. You can always fallback toPDColorSpace.toRGBImage(WritableRaster)
if this returns null.- Overrides:
toRawImage
in classPDCIEBasedColorSpace
- Parameters:
raster
- the source raster- Returns:
- an buffered image in this colorspace. Or null if it is not possible to extract that image with the original colorspace without conversion.
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toRGB
public float[] toRGB(float[] value) Description copied from class:PDColorSpace
Returns the RGB equivalent of the given color value.- Specified by:
toRGB
in classPDColorSpace
- Parameters:
value
- a color value with component values between 0 and 1- Returns:
- an array of R,G,B value between 0 and 255
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inverse
private float inverse(float x) -
getNumberOfComponents
public int getNumberOfComponents()Description copied from class:PDColorSpace
Returns the number of components in this color space- Specified by:
getNumberOfComponents
in classPDColorSpace
- Returns:
- the number of components in this color space
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getDefaultDecode
public float[] getDefaultDecode(int bitsPerComponent) Description copied from class:PDColorSpace
Returns the default decode array for this color space.- Specified by:
getDefaultDecode
in classPDColorSpace
- Parameters:
bitsPerComponent
- the number of bits per component.- Returns:
- the default decode array
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getInitialColor
Description copied from class:PDColorSpace
Returns the initial color value for this color space.- Specified by:
getInitialColor
in classPDColorSpace
- Returns:
- the initial color value for this color space
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getDefaultRangeArray
creates a range array with default values (-100..100 -100..100).- Returns:
- the new range array.
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getARange
This will get the valid range for the "a" component. If none is found then the default will be returned, which is -100..100.- Returns:
- the "a" range.
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getBRange
This will get the valid range for the "b" component. If none is found then the default will be returned, which is -100..100.- Returns:
- the "b" range.
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setARange
This will set the a range for the "a" component.- Parameters:
range
- the new range for the "a" component, or null if defaults (-100..100) are to be set.
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setBRange
This will set the "b" range for this color space.- Parameters:
range
- the new range for the "b" component, or null if defaults (-100..100) are to be set.
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setComponentRangeArray
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