Package org.apache.pdfbox.pdmodel.graphics.color

Class PDCalRGB

  • All Implemented Interfaces:
    COSObjectable
    public class PDCalRGB
extends PDCIEDictionaryBasedColorSpace
    A CalRGB colour space is a CIE-based colour space with one transformation stage instead of two. In this type of space, A, B, and C represent calibrated red, green, and blue colour values.
    Author:
    Ben Litchfield, John Hewson

    • Constructor Detail

      • PDCalRGB

        public PDCalRGB()
        Creates a new CalRGB color space.

      • PDCalRGB

        public PDCalRGB​(COSArray rgb)
        Creates a new CalRGB color space using the given COS array.
        Parameters:
        rgb - the cos array which represents this color space

    • Method Detail

      • getName

        public java.lang.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

      • getGamma

        public final PDGamma getGamma()
        Returns the gamma value. If none is present then the default of 1,1,1 will be returned.
        Returns:
        the gamma value

      • getMatrix

        public final float[] getMatrix()
        Returns the linear interpretation matrix, which is an array of nine numbers. If the underlying dictionary contains null then the identity matrix will be returned.
        Returns:
        the linear interpretation matrix

      • setGamma

        public final void setGamma​(PDGamma gamma)
        Sets the gamma value.
        Parameters:
        gamma - the new gamma value

      • setMatrix

        public final void setMatrix​(Matrix matrix)
        Sets the linear interpretation matrix. Passing in null will clear the matrix.
        Parameters:
        matrix - the new linear interpretation matrix, or null