itextpdf-master/itext/src/main/java/com/itextpdf/text/pdf/PdfSpotColor.java
/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2022 iText Group NV
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
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package com.itextpdf.text.pdf;

import com.itextpdf.text.BaseColor;
import com.itextpdf.text.error_messages.MessageLocalization;

/**
 * A <CODE>PdfSpotColor</CODE> defines a ColorSpace
 *
 * @see		PdfDictionary
 */

public class PdfSpotColor implements ICachedColorSpace, IPdfSpecialColorSpace {
    
/**	The color name */
    public PdfName name;
    
/** The alternative color space */
    public BaseColor altcs;
    // constructors

    public ColorDetails altColorDetails;
    
    /**
     * Constructs a new <CODE>PdfSpotColor</CODE>.
     *
     * @param		name		a String value
     * @param		altcs		an alternative colorspace value
     */
    
    public PdfSpotColor(String name, BaseColor altcs) {
        this.name = new PdfName(name);
        this.altcs = altcs;
    }

    public ColorDetails[] getColorantDetails(PdfWriter writer) {
        if (altColorDetails == null && this.altcs instanceof ExtendedColor && ((ExtendedColor) this.altcs).getType() == ExtendedColor.TYPE_LAB) {
            altColorDetails = writer.addSimple(((LabColor)altcs).getLabColorSpace());
        }
        return new ColorDetails[] {altColorDetails};
    }
    
    /**
     * Gets the alternative ColorSpace.
     * @return a BaseColor
     */
    public BaseColor getAlternativeCS() {
        return altcs;
    }

    public PdfName getName() {
        return name;
    }


    @Deprecated
    protected PdfObject getSpotObject(PdfWriter writer) {
        return getPdfObject(writer);
    }

    public PdfObject getPdfObject(PdfWriter writer) {
        PdfArray array = new PdfArray(PdfName.SEPARATION);
        array.add(name);
        PdfFunction func = null;
        if (altcs instanceof ExtendedColor) {
            int type = ((ExtendedColor)altcs).type;
            switch (type) {
                case ExtendedColor.TYPE_GRAY:
                    array.add(PdfName.DEVICEGRAY);
                    func = PdfFunction.type2(writer, new float[]{0, 1}, null, new float[]{1}, new float[]{((GrayColor)altcs).getGray()}, 1);
                    break;
                case ExtendedColor.TYPE_CMYK:
                    array.add(PdfName.DEVICECMYK);
                    CMYKColor cmyk = (CMYKColor)altcs;
                    func = PdfFunction.type2(writer, new float[]{0, 1}, null, new float[]{0, 0, 0, 0},
                        new float[]{cmyk.getCyan(), cmyk.getMagenta(), cmyk.getYellow(), cmyk.getBlack()}, 1);
                    break;
                case ExtendedColor.TYPE_LAB:
                    LabColor lab = (LabColor)altcs;
                    if (altColorDetails != null)
                        array.add(altColorDetails.getIndirectReference());
                    else
                        array.add(lab.getLabColorSpace().getPdfObject(writer));
                    func = PdfFunction.type2(writer, new float[]{0, 1}, null, new float[]{100f, 0f, 0f},
                            new float[]{lab.getL(), lab.getA(), lab.getB()}, 1);
                    break;
                default:
                    throw new RuntimeException(MessageLocalization.getComposedMessage("only.rgb.gray.and.cmyk.are.supported.as.alternative.color.spaces"));
            }
        }
        else {
            array.add(PdfName.DEVICERGB);
            func = PdfFunction.type2(writer, new float[]{0, 1}, null, new float[]{1, 1, 1},
                new float[]{(float)altcs.getRed() / 255, (float)altcs.getGreen() / 255, (float)altcs.getBlue() / 255}, 1);
        }
        array.add(func.getReference());
        return array;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (!(o instanceof PdfSpotColor)) return false;

        PdfSpotColor spotColor = (PdfSpotColor) o;

        if (!altcs.equals(spotColor.altcs)) return false;
        if (!name.equals(spotColor.name)) return false;

        return true;
    }

    @Override
    public int hashCode() {
        int result = name.hashCode();
        result = 31 * result + altcs.hashCode();
        return result;
    }
}
