org.sejda.sambox.pdmodel.graphics.color

Class PDDeviceGray

java.lang.Object

org.sejda.sambox.pdmodel.graphics.color.PDColorSpace

org.sejda.sambox.pdmodel.graphics.color.PDDeviceColorSpace

org.sejda.sambox.pdmodel.graphics.color.PDDeviceGray

All Implemented Interfaces:

COSObjectable

public final class PDDeviceGray
extends PDDeviceColorSpace

A color space with black, white, and intermediate shades of gray.

Author:

Ben Litchfield, John Hewson

Field Summary

Fields

Modifier and Type	Field and Description
static PDDeviceGray	INSTANCE The single instance of this class.

Fields inherited from class org.sejda.sambox.pdmodel.graphics.color.PDColorSpace

array

Method Summary

Modifier and Type	Method and Description
float[]	getDefaultDecode(int bitsPerComponent) Returns the default decode array for this color space.
PDColor	getInitialColor() Returns the initial color value for this color space.
String	getName() Returns the name of the color space.
int	getNumberOfComponents() Returns the number of components in this color space
float[]	toRGB(float[] value) Returns the RGB equivalent of the given color value.
BufferedImage	toRGBImage(WritableRaster raster) Returns the (A)RGB equivalent of the given raster.

Methods inherited from class org.sejda.sambox.pdmodel.graphics.color.PDDeviceColorSpace

getCOSObject, toString

Methods inherited from class org.sejda.sambox.pdmodel.graphics.color.PDColorSpace

create, create, create, isAllowedCache, toRGBImageAWT

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

INSTANCE

public static final PDDeviceGray INSTANCE

The single instance of this class.

Method Detail

getName

public String getName()

Description copied from class: PDColorSpace

Returns the name of the color space.

Specified by:

getName in class PDColorSpace

Returns:

the name of the color space

getNumberOfComponents

public int getNumberOfComponents()

Description copied from class: PDColorSpace

Returns the number of components in this color space

Specified by:

getNumberOfComponents in class PDColorSpace

Returns:

the number of components in this color space

getDefaultDecode

public float[] getDefaultDecode(int bitsPerComponent)

Description copied from class: PDColorSpace

Returns the default decode array for this color space.

Specified by:

getDefaultDecode in class PDColorSpace

Parameters:

bitsPerComponent - the number of bits per component.

Returns:

the default decode array

getInitialColor

public PDColor getInitialColor()

Description copied from class: PDColorSpace

Returns the initial color value for this color space.

Specified by:

getInitialColor in class PDColorSpace

Returns:

the initial color value for this color space

toRGB

public float[] toRGB(float[] value)

Description copied from class: PDColorSpace

Returns the RGB equivalent of the given color value.

Specified by:

toRGB in class PDColorSpace

Parameters:

value - a color value with component values between 0 and 1

Returns:

an array of R,G,B value between 0 and 255

toRGBImage

public BufferedImage toRGBImage(WritableRaster raster)
                         throws IOException

Description copied from class: PDColorSpace

Returns the (A)RGB equivalent of the given raster.

Specified by:

toRGBImage in class PDColorSpace

Parameters:

raster - the source raster

Returns:

an (A)RGB buffered image

Throws:

IOException - if the color conversion fails