com.itextpdf.barcodes.BarcodeEANSUPP Maven / Gradle / Ivy

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/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2023 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
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    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 .
 */
package com.itextpdf.barcodes;

import com.itextpdf.barcodes.exceptions.BarcodesExceptionMessageConstant;
import com.itextpdf.io.font.FontProgram;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
import com.itextpdf.kernel.colors.Color;


public class BarcodeEANSUPP extends Barcode1D {

    /**
     * The barcode with the EAN/UPC.
     */
    protected Barcode1D ean;
    /**
     * The barcode with the supplemental.
     */
    protected Barcode1D supp;

    /**
     * Creates new combined barcode.
     *
     * @param ean  the EAN/UPC barcode
     * @param supp the supplemental barcode
     */
    public BarcodeEANSUPP(Barcode1D ean, Barcode1D supp) {
        super(ean.document);
        // horizontal distance between the two barcodes
        n = 8;
        this.ean = ean;
        this.supp = supp;
    }

    /**
     * Gets the maximum area that the barcode and the text, if
     * any, will occupy. The lower left corner is always (0, 0).
     *
     * @return the size the barcode occupies.
     */
    public Rectangle getBarcodeSize() {
        Rectangle rect = ean.getBarcodeSize();
        rect.setWidth(rect.getWidth() + supp.getBarcodeSize().getWidth() + n);
        return rect;
    }

    /**
     * Places the barcode in a PdfCanvas. The
     * barcode is always placed at coordinates (0, 0). Use the
     * translation matrix to move it elsewhere.
     * The bars and text are written in the following colors:
     * 

     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * 
     * barColor textColor Result
null null bars and text painted with current fill color
barColor null bars and text painted with barColor
null textColor bars painted with current color
text painted with textColor
barColor textColor bars painted with barColor
text painted with textColor
     *
     * @param canvas    the PdfCanvas where the barcode will be placed
     * @param barColor  the color of the bars. It can be null
     * @param textColor the color of the text. It can be null
     * @return the dimensions the barcode occupies
     */
    @Override
    public Rectangle placeBarcode(PdfCanvas canvas, Color barColor, Color textColor) {
        if (supp.getFont() == null) {
            supp.setBarHeight(ean.getBarHeight());
        } else {
            final float sizeCoefficient = FontProgram.convertTextSpaceToGlyphSpace(supp.getSize());
            supp.setBarHeight(ean.getBarHeight() + supp.getBaseline()
                    - supp.getFont().getFontProgram().getFontMetrics().getCapHeight() * sizeCoefficient);
        }
        Rectangle eanR = ean.getBarcodeSize();
        canvas.saveState();
        ean.placeBarcode(canvas, barColor, textColor);
        canvas.restoreState();
        canvas.saveState();
        canvas.concatMatrix(1, 0, 0, 1, eanR.getWidth() + n, eanR.getHeight() - ean.getBarHeight());
        supp.placeBarcode(canvas, barColor, textColor);
        canvas.restoreState();
        return getBarcodeSize();
    }

}
`barColor`	`textColor`	Result
`null`	`null`	bars and text painted with current fill color
`barColor`	`null`	bars and text painted with `barColor`
`null`	`textColor`	bars painted with current color text painted with `textColor`
`barColor`	`textColor`	bars painted with `barColor` text painted with `textColor`