com.itextpdf.text.pdf.BarcodePostnet Maven / Gradle / Ivy
/*
* $Id: 52a397286d872829bb15e1f1d1c337936ae15c5a $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2016 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, 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):
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* or FITNESS FOR A PARTICULAR PURPOSE.
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* Boston, MA, 02110-1301 USA, or download the license from the following URL:
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* Section 5 of the GNU Affero General Public License.
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* 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
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*/
package com.itextpdf.text.pdf;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.BaseColor;
/** Implements the Postnet and Planet barcodes. The default parameters are:
*
*n = 72f / 22f; // distance between bars
*x = 0.02f * 72f; // bar width
*barHeight = 0.125f * 72f; // height of the tall bars
*size = 0.05f * 72f; // height of the short bars
*codeType = POSTNET; // type of code
*
*
* @author Paulo Soares
*/
public class BarcodePostnet extends Barcode{
/** The bars for each character.
*/
private static final byte BARS[][] =
{
{1,1,0,0,0},
{0,0,0,1,1},
{0,0,1,0,1},
{0,0,1,1,0},
{0,1,0,0,1},
{0,1,0,1,0},
{0,1,1,0,0},
{1,0,0,0,1},
{1,0,0,1,0},
{1,0,1,0,0}
};
/** Creates new BarcodePostnet */
public BarcodePostnet() {
n = 72f / 22f; // distance between bars
x = 0.02f * 72f; // bar width
barHeight = 0.125f * 72f; // height of the tall bars
size = 0.05f * 72f; // height of the short bars
codeType = POSTNET; // type of code
}
/** Creates the bars for Postnet.
* @param text the code to be created without checksum
* @return the bars
*/
public static byte[] getBarsPostnet(String text) {
int total = 0;
for (int k = text.length() - 1; k >= 0; --k) {
int n = text.charAt(k) - '0';
total += n;
}
text += (char)(((10 - (total % 10)) % 10) + '0');
byte bars[] = new byte[text.length() * 5 + 2];
bars[0] = 1;
bars[bars.length - 1] = 1;
for (int k = 0; k < text.length(); ++k) {
int c = text.charAt(k) - '0';
System.arraycopy(BARS[c], 0, bars, k * 5 + 1, 5);
}
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.
*/
public Rectangle getBarcodeSize() {
float width = ((code.length() + 1) * 5 + 1) * n + x;
return new Rectangle(width, barHeight);
}
/** Places the barcode in a PdfContentByte. 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 cb the PdfContentByte 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
*/
public Rectangle placeBarcode(PdfContentByte cb, BaseColor barColor, BaseColor textColor) {
if (barColor != null)
cb.setColorFill(barColor);
byte bars[] = getBarsPostnet(code);
byte flip = 1;
if (codeType == PLANET) {
flip = 0;
bars[0] = 0;
bars[bars.length - 1] = 0;
}
float startX = 0;
for (int k = 0; k < bars.length; ++k) {
cb.rectangle(startX, 0, x - inkSpreading, bars[k] == flip ? barHeight : size);
startX += n;
}
cb.fill();
return getBarcodeSize();
}
}