itextpdf-master/pdfa/src/main/java/com/itextpdf/text/pdf/PdfARadioCheckField.java
/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2022 iText Group NV
 * Authors: Bruno Lowagie, Alexander Chingarev, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of 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
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
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 * address: sales@itextpdf.com
 */
package com.itextpdf.text.pdf;

import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Rectangle;

import java.io.IOException;

public class PdfARadioCheckField extends RadioCheckField {

    private static final PdfName off = new PdfName("Off");

    protected static final String check = "0.8 0 0 0.8 0.3 0.5 cm 0 0 m\n" +
            "0.066 -0.026 l\n" +
            "0.137 -0.15 l\n" +
            "0.259 0.081 0.46 0.391 0.553 0.461 c\n" +
            "0.604 0.489 l\n" +
            "0.703 0.492 l\n" +
            "0.543 0.312 0.255 -0.205 0.154 -0.439 c\n" +
            "0.069 -0.399 l\n" +
            "0.035 -0.293 -0.039 -0.136 -0.091 -0.057 c\n" +
            "h\n" +
            "f\n";


    protected static final String circle = "1 0 0 1 0.86 0.5 cm 0 0 m\n" +
            "0 0.204 -0.166 0.371 -0.371 0.371 c\n" +
            "-0.575 0.371 -0.741 0.204 -0.741 0 c\n" +
            "-0.741 -0.204 -0.575 -0.371 -0.371 -0.371 c\n" +
            "-0.166 -0.371 0 -0.204 0 0 c\n" +
            "f\n";


    protected static final String cross = "1 0 0 1 0.85 0.8 cm 0 0 m\n" +
            "-0.172 -0.027 l\n" +
            "-0.332 -0.184 l\n" +
            "-0.443 -0.019 l\n" +
            "-0.475 -0.009 l\n" +
            "-0.568 -0.168 l\n" +
            "-0.453 -0.324 l\n" +
            "-0.58 -0.497 l\n" +
            "-0.59 -0.641 l\n" +
            "-0.549 -0.627 l\n" +
            "-0.543 -0.612 -0.457 -0.519 -0.365 -0.419 c\n" +
            "-0.163 -0.572 l\n" +
            "-0.011 -0.536 l\n" +
            "-0.004 -0.507 l\n" +
            "-0.117 -0.441 l\n" +
            "-0.246 -0.294 l\n" +
            "-0.132 -0.181 l\n" +
            "0.031 -0.04 l\n" +
            "h\n" +
            "f\n";

    protected static final String diamond = "1 0 0 1 0.55 0.12 cm 0 0 m\n" +
            "0.376 0.376 l\n" +
            "0 0.751 l\n" +
            "-0.376 0.376 l\n" +
            "h\n" +
            "f\n";

    protected static final String square = "1 0 0 1 0.885 0.835 cm 0 0 -0.669 -0.67 re\n" +
            "f\n";

    protected static final String star = "0.95 0 0 0.95 0.9 0.6 cm 0 0 m\n" +
            "-0.291 0 l\n" +
            "-0.381 0.277 l\n" +
            "-0.47 0 l\n" +
            "-0.761 0 l\n" +
            "-0.526 -0.171 l\n" +
            "-0.616 -0.448 l\n" +
            "-0.381 -0.277 l\n" +
            "-0.145 -0.448 l\n" +
            "-0.236 -0.171 l\n" +
            "h\n" +
            "f\n";

    protected static String typeStreams[] = {check, circle, cross, diamond, square, star};

    public PdfARadioCheckField(PdfWriter writer, Rectangle box, String fieldName, String onValue) {
        super(writer, box, fieldName, onValue);
    }

    @Override
    protected PdfFormField getField(boolean isRadio) throws IOException, DocumentException {
        PdfFormField field = super.getField(isRadio);
        PdfDictionary ap = field.getAsDict(PdfName.AP);
        if (ap != null) {
            PdfDictionary n = ap.getAsDict(PdfName.N);
            if (n != null) {
                PdfObject stream = null;
                if (isChecked())
                    stream = n.get(new PdfName(getOnValue()));
                else
                    stream = n.get(off);
                if (stream != null) {
                    ap.put(PdfName.N, stream);
                }
            }
        }
        return field;
    }

    @Override
    public void setCheckType(int checkType) {
        if (checkType < TYPE_CHECK || checkType > TYPE_STAR)
            checkType = TYPE_CIRCLE;
        this.checkType = checkType;
    }

    @Override
    public PdfAppearance getAppearance(boolean isRadio, boolean on) throws IOException, DocumentException {
        if (isRadio && checkType == TYPE_CIRCLE)
            return getAppearanceRadioCircle(on);
        PdfAppearance app = getBorderAppearance();
        if (!on)
            return app;
        boolean borderExtra = borderStyle == PdfBorderDictionary.STYLE_BEVELED || borderStyle == PdfBorderDictionary.STYLE_INSET;
        float bw2 = borderWidth;
        if (borderExtra) {
            bw2 *= 2;
        }
        float offsetX = (borderExtra ? 2 * borderWidth : borderWidth);
        offsetX = Math.max(offsetX, 1);
        float offX = Math.min(bw2, offsetX);
        float wt = box.getWidth() - 2 * offX;
        float ht = box.getHeight() - 2 * offX;
        app.saveState();
        app.rectangle(offX, offX, wt, ht);
        app.clip();
        app.newPath();
        if (textColor == null)
            app.resetGrayFill();
        else
            app.setColorFill(textColor);
        float size = Math.min(box.getWidth(), box.getHeight());
        app.concatCTM(size, 0, 0, size, 0, 0);
        app.getInternalBuffer().append(typeStreams[checkType - 1]);
        app.restoreState();
        return app;
    }

    @Override
    protected BaseFont getRealFont() throws IOException, DocumentException {
        return null;
    }
}
