com.itextpdf.barcodes.BarcodeInter25 Maven / Gradle / Ivy
/*
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
* x = 0.8f;
* n = 2;
* font = new PdfType1Font(document, new TYPE_1_FONT(StandardFonts.HELVETICA, PdfEncodings.WINANSI));
* size = 8;
* baseline = size;
* barHeight = size * 3;
* textAlignment = ALIGN_CENTER;
* generateChecksum = false;
* checksumText = false;
*
*/
public class BarcodeInter25 extends Barcode1D {
/**
* The bars to generate the code.
*/
private static final byte[][] BARS =
{
{0, 0, 1, 1, 0},
{1, 0, 0, 0, 1},
{0, 1, 0, 0, 1},
{1, 1, 0, 0, 0},
{0, 0, 1, 0, 1},
{1, 0, 1, 0, 0},
{0, 1, 1, 0, 0},
{0, 0, 0, 1, 1},
{1, 0, 0, 1, 0},
{0, 1, 0, 1, 0}
};
/**
* Creates new BarcodeInter25.
* To generate the font the {@link PdfDocument#getDefaultFont()} will be implicitly called.
* If you want to use this barcode in PDF/A documents, please consider using {@link #BarcodeInter25(PdfDocument, PdfFont)}.
*
* @param document The document to which the barcode will be added
*/
public BarcodeInter25(PdfDocument document) {
this(document, document.getDefaultFont());
}
/**
* Creates new BarcodeInter25
*
* @param document The document to which the barcode will be added
* @param font The font to use
*/
public BarcodeInter25(PdfDocument document, PdfFont font) {
super(document);
this.x = 0.8f;
this.n = 2;
this.font = font;
this.size = 8;
this.baseline = size;
this.barHeight = size * 3;
this.textAlignment = ALIGN_CENTER;
this.generateChecksum = false;
this.checksumText = false;
}
/**
* Deletes all the non numeric characters from text.
*
* @param text the text
* @return a String with only numeric characters
*/
public static String keepNumbers(String text) {
StringBuilder sb = new StringBuilder();
for (int k = 0; k < text.length(); ++k) {
char c = text.charAt(k);
if (c >= '0' && c <= '9') {
sb.append(c);
}
}
return sb.toString();
}
/**
* Calculates the checksum.
*
* @param text the numeric text
* @return the checksum
*/
public static char getChecksum(String text) {
int mul = 3;
int total = 0;
for (int k = text.length() - 1; k >= 0; --k) {
int n = text.charAt(k) - '0';
total += mul * n;
mul ^= 2;
}
return (char) (((10 - (total % 10)) % 10) + '0');
}
/**
* Creates the bars for the barcode.
*
* @param text the text. It can contain non numeric characters
* @return the barcode
*/
public static byte[] getBarsInter25(String text) {
text = keepNumbers(text);
if ((text.length() & 1) != 0) {
throw new PdfException(BarcodesExceptionMessageConstant.TEXT_MUST_BE_EVEN);
}
byte[] bars = new byte[text.length() * 5 + 7];
int pb = 0;
bars[pb++] = 0;
bars[pb++] = 0;
bars[pb++] = 0;
bars[pb++] = 0;
int len = text.length() / 2;
for (int k = 0; k < len; ++k) {
int c1 = text.charAt(k * 2) - '0';
int c2 = text.charAt(k * 2 + 1) - '0';
byte[] b1 = BARS[c1];
byte[] b2 = BARS[c2];
for (int j = 0; j < 5; ++j) {
bars[pb++] = b1[j];
bars[pb++] = b2[j];
}
}
bars[pb++] = 1;
bars[pb++] = 0;
bars[pb++] = 0;
return bars;
}
/**
* 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.
*/
@Override
public Rectangle getBarcodeSize() {
float fontX = 0;
float fontY = 0;
if (font != null) {
if (baseline > 0) {
fontY = baseline - getDescender();
} else {
fontY = -baseline + size;
}
String fullCode = code;
if (generateChecksum && checksumText) {
fullCode += getChecksum(fullCode);
}
fontX = font.getWidth(altText != null ? altText : fullCode, size);
}
String fullCode = keepNumbers(code);
int len = fullCode.length();
if (generateChecksum) {
++len;
}
float fullWidth = len * (3 * x + 2 * x * n) + (6 + n) * x;
fullWidth = Math.max(fullWidth, fontX);
float fullHeight = barHeight + fontY;
return new Rectangle(fullWidth, fullHeight);
}
/**
* 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:
*
*
*
* barColortextColorResult
*
*
* nullnullbars and text painted with current fill color
*
*
* barColornullbars and text painted with barColor
*
*
* nulltextColorbars painted with current color
text painted with textColor
*
*
* barColortextColorbars 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) {
String fullCode = code;
float fontX = 0;
if (font != null) {
if (generateChecksum && checksumText)
fullCode += getChecksum(fullCode);
fontX = font.getWidth(fullCode = altText != null ? altText : fullCode, size);
}
String bCode = keepNumbers(code);
if (generateChecksum)
bCode += getChecksum(bCode);
int len = bCode.length();
float fullWidth = len * (3 * x + 2 * x * n) + (6 + n) * x;
float barStartX = 0;
float textStartX = 0;
switch (textAlignment) {
case ALIGN_LEFT:
break;
case ALIGN_RIGHT:
if (fontX > fullWidth) {
barStartX = fontX - fullWidth;
} else {
textStartX = fullWidth - fontX;
}
break;
default:
if (fontX > fullWidth) {
barStartX = (fontX - fullWidth) / 2;
} else {
textStartX = (fullWidth - fontX) / 2;
}
break;
}
float barStartY = 0;
float textStartY = 0;
if (font != null) {
if (baseline <= 0) {
textStartY = barHeight - baseline;
} else {
textStartY = -getDescender();
barStartY = textStartY + baseline;
}
}
byte[] bars = getBarsInter25(bCode);
boolean print = true;
if (barColor != null)
canvas.setFillColor(barColor);
for (int k = 0; k < bars.length; ++k) {
float w = (bars[k] == 0 ? x : x * n);
if (print) {
canvas.rectangle(barStartX, barStartY, w - inkSpreading, barHeight);
}
print = !print;
barStartX += w;
}
canvas.fill();
if (font != null) {
if (textColor != null) {
canvas.setFillColor(textColor);
}
canvas.beginText();
canvas.setFontAndSize(font, size);
canvas.setTextMatrix(textStartX, textStartY);
canvas.showText(fullCode);
canvas.endText();
}
return getBarcodeSize();
}
}