PdfSquareAnnotation.java

/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2025 Apryse Group NV
    Authors: Apryse Software.

    This program is offered under a commercial and under the AGPL license.
    For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.

    AGPL licensing:
    This program is free software: you can redistribute it and/or modify
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    This program is distributed in the hope that it will be useful,
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
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 */
package com.itextpdf.kernel.pdf.annot;

import com.itextpdf.kernel.colors.Color;
import com.itextpdf.kernel.colors.DeviceCmyk;
import com.itextpdf.kernel.colors.DeviceGray;
import com.itextpdf.kernel.colors.DeviceRgb;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.kernel.pdf.PdfArray;
import com.itextpdf.kernel.pdf.PdfDictionary;
import com.itextpdf.kernel.pdf.PdfName;
import com.itextpdf.kernel.pdf.PdfObject;

public class PdfSquareAnnotation extends PdfMarkupAnnotation {


	public PdfSquareAnnotation(Rectangle rect) {
        super(rect);
    }

    /**
     * Instantiates a new {@link PdfSquareAnnotation} instance based on {@link PdfDictionary}
     * instance, that represents existing annotation object in the document.
     *
     * @param pdfObject the {@link PdfDictionary} representing annotation object
     * @see PdfAnnotation#makeAnnotation(PdfObject)
     */
    protected PdfSquareAnnotation(PdfDictionary pdfObject) {
        super(pdfObject);
    }

    @Override
    public PdfName getSubtype() {
        return PdfName.Square;
    }

    /**
     * The dictionaries for some annotation types (such as free text and polygon annotations) can include the BS entry.
     * That entry specifies a border style dictionary that has more settings than the array specified for the Border
     * entry (see {@link PdfAnnotation#getBorder()}). If an annotation dictionary includes the BS entry, then the Border
     * entry is ignored. If annotation includes AP (see {@link PdfAnnotation#getAppearanceDictionary()}) it takes
     * precedence over the BS entry. For more info on BS entry see ISO-320001, Table 166.
     * @return {@link PdfDictionary} which is a border style dictionary or null if it is not specified.
     */
    public PdfDictionary getBorderStyle() {
        return getPdfObject().getAsDictionary(PdfName.BS);
    }

    /**
     * Sets border style dictionary that has more settings than the array specified for the Border entry ({@link PdfAnnotation#getBorder()}).
     * See ISO-320001, Table 166 and {@link #getBorderStyle()} for more info.
     * @param borderStyle a border style dictionary specifying the line width and dash pattern that shall be used
     *                    in drawing the annotation���s border.
     * @return this {@link PdfSquareAnnotation} instance.
     */
    public PdfSquareAnnotation setBorderStyle(PdfDictionary borderStyle) {
        return (PdfSquareAnnotation) put(PdfName.BS, borderStyle);
    }

    /**
     * Setter for the annotation's preset border style. Possible values are
     * <ul>
     *     <li>{@link PdfAnnotation#STYLE_SOLID} - A solid rectangle surrounding the annotation.
     *     <li>{@link PdfAnnotation#STYLE_DASHED} - A dashed rectangle surrounding the annotation.
     *     <li>{@link PdfAnnotation#STYLE_BEVELED} - A simulated embossed rectangle that appears to be raised above the surface of the page.
     *     <li>{@link PdfAnnotation#STYLE_INSET} - A simulated engraved rectangle that appears to be recessed below the surface of the page.
     *     <li>{@link PdfAnnotation#STYLE_UNDERLINE} - A single line along the bottom of the annotation rectangle.
     * </ul>
     * See also ISO-320001, Table 166.
     * @param style The new value for the annotation's border style.
     * @return this {@link PdfSquareAnnotation} instance.
     * @see #getBorderStyle()
     */
    public PdfSquareAnnotation setBorderStyle(PdfName style) {
        return setBorderStyle(BorderStyleUtil.setStyle(getBorderStyle(), style));
    }

    /**
     * Setter for the annotation's preset dashed border style. This property has affect only if {@link PdfAnnotation#STYLE_DASHED}
     * style was used for the annotation border style (see {@link #setBorderStyle(PdfName)}.
     * See ISO-320001 8.4.3.6, "Line Dash Pattern" for the format in which dash pattern shall be specified.
     * @param dashPattern a dash array defining a pattern of dashes and gaps that
     *                    shall be used in drawing a dashed border.
     * @return this {@link PdfSquareAnnotation} instance.
     */
    public PdfSquareAnnotation setDashPattern(PdfArray dashPattern) {
        return setBorderStyle(BorderStyleUtil.setDashPattern(getBorderStyle(), dashPattern));
    }

    /**
     * A set of four numbers describing the numerical differences between two rectangles:
     * the Rect entry of the annotation and the actual boundaries of the underlying square.
     *
     * @return null if not specified, otherwise a {@link PdfArray} with four numbers which correspond to the
     * differences in default user space between the left, top, right, and bottom coordinates of Rect and those
     * of the inner rectangle, respectively.
     */
    public PdfArray getRectangleDifferences() {
        return getPdfObject().getAsArray(PdfName.RD);
    }

    /**
     * A set of four numbers describing the numerical differences between two rectangles:
     * the Rect entry of the annotation and the actual boundaries of the underlying square.
     *
     * @param rect a {@link PdfArray} with four numbers which correspond to the differences in default user space between
     *             the left, top, right, and bottom coordinates of Rect and those of the inner rectangle, respectively.
     *             Each value shall be greater than or equal to 0. The sum of the top and bottom differences shall be
     *             less than the height of Rect, and the sum of the left and right differences shall be less than
     *             the width of Rect.
     * @return this {@link PdfSquareAnnotation} instance.
     */
    public PdfSquareAnnotation setRectangleDifferences(PdfArray rect) {
        return (PdfSquareAnnotation) put(PdfName.RD, rect);
    }

    /**
     * Gets a border effect dictionary that specifies an effect that shall be applied to the border of the annotations.
     * @return a {@link PdfDictionary}, which is a border effect dictionary (see ISO-320001, Table 167).
     */
    public PdfDictionary getBorderEffect() {
        return getPdfObject().getAsDictionary(PdfName.BE);
    }

    /**
     * Sets a border effect dictionary that specifies an effect that shall be applied to the border of the annotations.
     *
     * @param borderEffect a {@link PdfDictionary} which contents shall be specified in accordance to ISO-320001, Table 167.
     * @return this {@link PdfSquareAnnotation} instance.
     */
    public PdfSquareAnnotation setBorderEffect(PdfDictionary borderEffect) {
        return (PdfSquareAnnotation) put(PdfName.BE, borderEffect);
    }

    /**
     * The interior color which is used to fill the annotation's rectangle.
     *
     * @return {@link Color} of either {@link DeviceGray}, {@link DeviceRgb} or {@link DeviceCmyk} type which defines
     * interior color of the annotation, or null if interior color is not specified.
     */
    public Color getInteriorColor() {
        return InteriorColorUtil.parseInteriorColor(getPdfObject().getAsArray(PdfName.IC));
    }

    /**
     * An array of numbers in the range 0.0 to 1.0 specifying the interior color
     * which is used to fill the annotation's rectangle.
     *
     * @param interiorColor a {@link PdfArray} of numbers in the range 0.0 to 1.0. The number of array elements determines
     *                      the colour space in which the colour is defined: 0 - No colour, transparent; 1 - DeviceGray,
     *                      3 - DeviceRGB, 4 - DeviceCMYK. For the {@link PdfRedactAnnotation} number of elements shall be
     *                      equal to 3 (which defines DeviceRGB colour space).
     * @return this {@link PdfSquareAnnotation} instance.
     */
    public PdfSquareAnnotation setInteriorColor(PdfArray interiorColor) {
        return (PdfSquareAnnotation) put(PdfName.IC, interiorColor);
    }

    /**
     * An array of numbers in the range 0.0 to 1.0 specifying the interior color
     * which is used to fill the annotation's rectangle.
     *
     * @param interiorColor an array of floats in the range 0.0 to 1.0.
     * @return this {@link PdfSquareAnnotation} instance.
     */
    public PdfSquareAnnotation setInteriorColor(float[] interiorColor) {
        return setInteriorColor(new PdfArray(interiorColor));
    }
}