/* * Copyright 2002 by Paulo Soares. * * The contents of this file are subject to the Mozilla Public License Version 1.1 * (the "License"); you may not use this file except in compliance with the License. * You may obtain a copy of the License at http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the License. * * The Original Code is 'iText, a free JAVA-PDF library'. * * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie. * All Rights Reserved. * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved. * * Contributor(s): all the names of the contributors are added in the source code * where applicable. * * Alternatively, the contents of this file may be used under the terms of the * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the * provisions of LGPL are applicable instead of those above. If you wish to * allow use of your version of this file only under the terms of the LGPL * License and not to allow others to use your version of this file under * the MPL, indicate your decision by deleting the provisions above and * replace them with the notice and other provisions required by the LGPL. * If you do not delete the provisions above, a recipient may use your version * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE. * * This library is free software; you can redistribute it and/or modify it * under the terms of the MPL as stated above or under the terms of the GNU * Library General Public License as published by the Free Software Foundation; * either version 2 of the License, or any later version. * * This library 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 Library general Public License for more * details. * * If you didn't download this code from the following link, you should check if * you aren't using an obsolete version: * http://www.lowagie.com/iText/ */ package com.lowagie.text.pdf; import com.lowagie.text.Rectangle; import com.lowagie.text.ExceptionConverter; import java.util.Arrays; import java.awt.Color; import java.awt.Image; import java.awt.Canvas; import java.awt.image.MemoryImageSource; /** Generates barcodes in several formats: EAN13, EAN8, UPCA, UPCE, * supplemental 2 and 5. The default parameters are: *
 *x = 0.8f;
 *font = BaseFont.createFont("Helvetica", "winansi", false);
 *size = 8;
 *baseline = size;
 *barHeight = size * 3;
 *guardBars = true;
 *codeType = EAN13;
 *code = "";
 * 
* * @author Paulo Soares (psoares@consiste.pt) */ public class BarcodeEAN extends Barcode{ /** The bar positions that are guard bars.*/ static int GUARD_EMPTY[] = {}; /** The bar positions that are guard bars.*/ static int GUARD_UPCA[] = {0, 2, 4, 6, 28, 30, 52, 54, 56, 58}; /** The bar positions that are guard bars.*/ static int GUARD_EAN13[] = {0, 2, 28, 30, 56, 58}; /** The bar positions that are guard bars.*/ static int GUARD_EAN8[] = {0, 2, 20, 22, 40, 42}; /** The bar positions that are guard bars.*/ static int GUARD_UPCE[] = {0, 2, 28, 30, 32}; /** The x coordinates to place the text.*/ static float TEXTPOS_EAN13[] = {6.5f, 13.5f, 20.5f, 27.5f, 34.5f, 41.5f, 53.5f, 60.5f, 67.5f, 74.5f, 81.5f, 88.5f}; /** The x coordinates to place the text.*/ static float TEXTPOS_EAN8[] = {6.5f, 13.5f, 20.5f, 27.5f, 39.5f, 46.5f, 53.5f, 60.5f}; /** The basic bar widths.*/ static byte BARS[][] = { {3, 2, 1, 1}, // 0 {2, 2, 2, 1}, // 1 {2, 1, 2, 2}, // 2 {1, 4, 1, 1}, // 3 {1, 1, 3, 2}, // 4 {1, 2, 3, 1}, // 5 {1, 1, 1, 4}, // 6 {1, 3, 1, 2}, // 7 {1, 2, 1, 3}, // 8 {3, 1, 1, 2} // 9 }; /** The total number of bars for EAN13.*/ static final int TOTALBARS_EAN13 = 11 + 12 * 4; /** The total number of bars for EAN8.*/ static final int TOTALBARS_EAN8 = 11 + 8 * 4; /** The total number of bars for UPCE.*/ static final int TOTALBARS_UPCE = 9 + 6 * 4; /** The total number of bars for supplemental 2.*/ static final int TOTALBARS_SUPP2 = 13; /** The total number of bars for supplemental 5.*/ static final int TOTALBARS_SUPP5 = 31; /** Marker for odd parity.*/ static final int ODD = 0; /** Marker for even parity.*/ static final int EVEN = 1; /** Sequence of parities to be used with EAN13.*/ static byte PARITY13[][] = { {ODD, ODD, ODD, ODD, ODD, ODD}, // 0 {ODD, ODD, EVEN, ODD, EVEN, EVEN}, // 1 {ODD, ODD, EVEN, EVEN, ODD, EVEN}, // 2 {ODD, ODD, EVEN, EVEN, EVEN, ODD}, // 3 {ODD, EVEN, ODD, ODD, EVEN, EVEN}, // 4 {ODD, EVEN, EVEN, ODD, ODD, EVEN}, // 5 {ODD, EVEN, EVEN, EVEN, ODD, ODD}, // 6 {ODD, EVEN, ODD, EVEN, ODD, EVEN}, // 7 {ODD, EVEN, ODD, EVEN, EVEN, ODD}, // 8 {ODD, EVEN, EVEN, ODD, EVEN, ODD} // 9 }; /** Sequence of parities to be used with supplemental 2.*/ static byte PARITY2[][] = { {ODD, ODD}, // 0 {ODD, EVEN}, // 1 {EVEN, ODD}, // 2 {EVEN, EVEN} // 3 }; /** Sequence of parities to be used with supplemental 2.*/ static byte PARITY5[][] = { {EVEN, EVEN, ODD, ODD, ODD}, // 0 {EVEN, ODD, EVEN, ODD, ODD}, // 1 {EVEN, ODD, ODD, EVEN, ODD}, // 2 {EVEN, ODD, ODD, ODD, EVEN}, // 3 {ODD, EVEN, EVEN, ODD, ODD}, // 4 {ODD, ODD, EVEN, EVEN, ODD}, // 5 {ODD, ODD, ODD, EVEN, EVEN}, // 6 {ODD, EVEN, ODD, EVEN, ODD}, // 7 {ODD, EVEN, ODD, ODD, EVEN}, // 8 {ODD, ODD, EVEN, ODD, EVEN} // 9 }; /** Sequence of parities to be used with UPCE.*/ static byte PARITYE[][] = { {EVEN, EVEN, EVEN, ODD, ODD, ODD}, // 0 {EVEN, EVEN, ODD, EVEN, ODD, ODD}, // 1 {EVEN, EVEN, ODD, ODD, EVEN, ODD}, // 2 {EVEN, EVEN, ODD, ODD, ODD, EVEN}, // 3 {EVEN, ODD, EVEN, EVEN, ODD, ODD}, // 4 {EVEN, ODD, ODD, EVEN, EVEN, ODD}, // 5 {EVEN, ODD, ODD, ODD, EVEN, EVEN}, // 6 {EVEN, ODD, EVEN, ODD, EVEN, ODD}, // 7 {EVEN, ODD, EVEN, ODD, ODD, EVEN}, // 8 {EVEN, ODD, ODD, EVEN, ODD, EVEN} // 9 }; /** Creates new BarcodeEAN */ public BarcodeEAN() { try { x = 0.8f; font = BaseFont.createFont("Helvetica", "winansi", false); size = 8; baseline = size; barHeight = size * 3; guardBars = true; codeType = EAN13; code = ""; } catch (Exception e) { throw new ExceptionConverter(e); } } /** Calculates the EAN parity character. * @param code the code * @return the parity character */ public static int calculateEANParity(String code) { int mul = 3; int total = 0; for (int k = code.length() - 1; k >= 0; --k) { int n = code.charAt(k) - '0'; total += mul * n; mul ^= 2; } return (10 - (total % 10)) % 10; } /** Converts an UPCA code into an UPCE code. If the code can not * be converted a null is returned. * @param text the code to convert. It must have 12 numeric characters * @return the 8 converted digits or null if the * code could not be converted */ static public String convertUPCAtoUPCE(String text) { if (text.length() != 12 || !(text.startsWith("0") || text.startsWith("1"))) return null; if (text.substring(3, 6).equals("000") || text.substring(3, 6).equals("100") || text.substring(3, 6).equals("200")) { if (text.substring(6, 8).equals("00")) return text.substring(0, 1) + text.substring(1, 3) + text.substring(8, 11) + text.substring(3, 4) + text.substring(11); } else if (text.substring(4, 6).equals("00")) { if (text.substring(6, 9).equals("000")) return text.substring(0, 1) + text.substring(1, 4) + text.substring(9, 11) + "3" + text.substring(11); } else if (text.substring(5, 6).equals("0")) { if (text.substring(6, 10).equals("0000")) return text.substring(0, 1) + text.substring(1, 5) + text.substring(10, 11) + "4" + text.substring(11); } else if (text.charAt(10) >= '5') { if (text.substring(6, 10).equals("0000")) return text.substring(0, 1) + text.substring(1, 6) + text.substring(10, 11) + text.substring(11); } return null; } /** Creates the bars for the barcode EAN13 and UPCA. * @param _code the text with 13 digits * @return the barcode */ public static byte[] getBarsEAN13(String _code) { int code[] = new int[_code.length()]; for (int k = 0; k < code.length; ++k) code[k] = _code.charAt(k) - '0'; byte bars[] = new byte[TOTALBARS_EAN13]; int pb = 0; bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; byte sequence[] = PARITY13[code[0]]; for (int k = 0; k < sequence.length; ++k) { int c = code[k + 1]; byte stripes[] = BARS[c]; if (sequence[k] == ODD) { bars[pb++] = stripes[0]; bars[pb++] = stripes[1]; bars[pb++] = stripes[2]; bars[pb++] = stripes[3]; } else { bars[pb++] = stripes[3]; bars[pb++] = stripes[2]; bars[pb++] = stripes[1]; bars[pb++] = stripes[0]; } } bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; for (int k = 7; k < 13; ++k) { int c = code[k]; byte stripes[] = BARS[c]; bars[pb++] = stripes[0]; bars[pb++] = stripes[1]; bars[pb++] = stripes[2]; bars[pb++] = stripes[3]; } bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; return bars; } /** Creates the bars for the barcode EAN8. * @param _code the text with 8 digits * @return the barcode */ public static byte[] getBarsEAN8(String _code) { int code[] = new int[_code.length()]; for (int k = 0; k < code.length; ++k) code[k] = _code.charAt(k) - '0'; byte bars[] = new byte[TOTALBARS_EAN8]; int pb = 0; bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; for (int k = 0; k < 4; ++k) { int c = code[k]; byte stripes[] = BARS[c]; bars[pb++] = stripes[0]; bars[pb++] = stripes[1]; bars[pb++] = stripes[2]; bars[pb++] = stripes[3]; } bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; for (int k = 4; k < 8; ++k) { int c = code[k]; byte stripes[] = BARS[c]; bars[pb++] = stripes[0]; bars[pb++] = stripes[1]; bars[pb++] = stripes[2]; bars[pb++] = stripes[3]; } bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; return bars; } /** Creates the bars for the barcode UPCE. * @param _code the text with 8 digits * @return the barcode */ public static byte[] getBarsUPCE(String _code) { int code[] = new int[_code.length()]; for (int k = 0; k < code.length; ++k) code[k] = _code.charAt(k) - '0'; byte bars[] = new byte[TOTALBARS_UPCE]; boolean flip = (code[0] != 0); int pb = 0; bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; byte sequence[] = PARITYE[code[code.length - 1]]; for (int k = 1; k < code.length - 1; ++k) { int c = code[k]; byte stripes[] = BARS[c]; if (sequence[k - 1] == (flip ? EVEN : ODD)) { bars[pb++] = stripes[0]; bars[pb++] = stripes[1]; bars[pb++] = stripes[2]; bars[pb++] = stripes[3]; } else { bars[pb++] = stripes[3]; bars[pb++] = stripes[2]; bars[pb++] = stripes[1]; bars[pb++] = stripes[0]; } } bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 1; return bars; } /** Creates the bars for the barcode supplemental 2. * @param _code the text with 2 digits * @return the barcode */ public static byte[] getBarsSupplemental2(String _code) { int code[] = new int[2]; for (int k = 0; k < code.length; ++k) code[k] = _code.charAt(k) - '0'; byte bars[] = new byte[TOTALBARS_SUPP2]; int pb = 0; int parity = (code[0] * 10 + code[1]) % 4; bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 2; byte sequence[] = PARITY2[parity]; for (int k = 0; k < sequence.length; ++k) { if (k == 1) { bars[pb++] = 1; bars[pb++] = 1; } int c = code[k]; byte stripes[] = BARS[c]; if (sequence[k] == ODD) { bars[pb++] = stripes[0]; bars[pb++] = stripes[1]; bars[pb++] = stripes[2]; bars[pb++] = stripes[3]; } else { bars[pb++] = stripes[3]; bars[pb++] = stripes[2]; bars[pb++] = stripes[1]; bars[pb++] = stripes[0]; } } return bars; } /** Creates the bars for the barcode supplemental 5. * @param _code the text with 5 digits * @return the barcode */ public static byte[] getBarsSupplemental5(String _code) { int code[] = new int[5]; for (int k = 0; k < code.length; ++k) code[k] = _code.charAt(k) - '0'; byte bars[] = new byte[TOTALBARS_SUPP5]; int pb = 0; int parity = (((code[0] + code[2] + code[4]) * 3) + ((code[1] + code[3]) * 9)) % 10; bars[pb++] = 1; bars[pb++] = 1; bars[pb++] = 2; byte sequence[] = PARITY5[parity]; for (int k = 0; k < sequence.length; ++k) { if (k != 0) { bars[pb++] = 1; bars[pb++] = 1; } int c = code[k]; byte stripes[] = BARS[c]; if (sequence[k] == ODD) { bars[pb++] = stripes[0]; bars[pb++] = stripes[1]; bars[pb++] = stripes[2]; bars[pb++] = stripes[3]; } else { bars[pb++] = stripes[3]; bars[pb++] = stripes[2]; bars[pb++] = stripes[1]; bars[pb++] = stripes[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. */ public Rectangle getBarcodeSize() { float width = 0; float height = barHeight; if (font != null) { if (baseline <= 0) height += -baseline + size; else height += baseline - font.getFontDescriptor(BaseFont.DESCENT, size); } switch (codeType) { case EAN13: width = x * (11 + 12 * 7); if (font != null) { width += font.getWidthPoint(code.charAt(0), size); } break; case EAN8: width = x * (11 + 8 * 7); break; case UPCA: width = x * (11 + 12 * 7); if (font != null) { width += font.getWidthPoint(code.charAt(0), size) + font.getWidthPoint(code.charAt(11), size); } break; case UPCE: width = x * (9 + 6 * 7); if (font != null) { width += font.getWidthPoint(code.charAt(0), size) + font.getWidthPoint(code.charAt(7), size); } break; case SUPP2: width = x * (6 + 2 * 7); break; case SUPP5: width = x * (4 + 5 * 7 + 4 * 2); break; default: throw new RuntimeException("Invalid code type."); } return new Rectangle(width, height); } /** Places the barcode in a PdfContentByte. The * barcode is always placed at coodinates (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, Color barColor, Color textColor) { Rectangle rect = getBarcodeSize(); float barStartX = 0; float barStartY = 0; float textStartY = 0; if (font != null) { if (baseline <= 0) textStartY = barHeight - baseline; else { textStartY = -font.getFontDescriptor(BaseFont.DESCENT, size); barStartY = textStartY + baseline; } } switch (codeType) { case EAN13: case UPCA: case UPCE: if (font != null) barStartX += font.getWidthPoint(code.charAt(0), size); break; } byte bars[] = null; int guard[] = GUARD_EMPTY; switch (codeType) { case EAN13: bars = getBarsEAN13(code); guard = GUARD_EAN13; break; case EAN8: bars = getBarsEAN8(code); guard = GUARD_EAN8; break; case UPCA: bars = getBarsEAN13("0" + code); guard = GUARD_UPCA; break; case UPCE: bars = getBarsUPCE(code); guard = GUARD_UPCE; break; case SUPP2: bars = getBarsSupplemental2(code); break; case SUPP5: bars = getBarsSupplemental5(code); break; } float keepBarX = barStartX; boolean print = true; float gd = 0; if (font != null && baseline > 0 && guardBars) { gd = baseline / 2; } if (barColor != null) cb.setColorFill(barColor); for (int k = 0; k < bars.length; ++k) { float w = bars[k] * x; if (print) { if (Arrays.binarySearch(guard, k) >= 0) cb.rectangle(barStartX, barStartY - gd, w - inkSpreading, barHeight + gd); else cb.rectangle(barStartX, barStartY, w - inkSpreading, barHeight); } print = !print; barStartX += w; } cb.fill(); if (font != null) { if (textColor != null) cb.setColorFill(textColor); cb.beginText(); cb.setFontAndSize(font, size); switch (codeType) { case EAN13: cb.setTextMatrix(0, textStartY); cb.showText(code.substring(0, 1)); for (int k = 1; k < 13; ++k) { String c = code.substring(k, k + 1); float len = font.getWidthPoint(c, size); float pX = keepBarX + TEXTPOS_EAN13[k - 1] * x - len / 2; cb.setTextMatrix(pX, textStartY); cb.showText(c); } break; case EAN8: for (int k = 0; k < 8; ++k) { String c = code.substring(k, k + 1); float len = font.getWidthPoint(c, size); float pX = TEXTPOS_EAN8[k] * x - len / 2; cb.setTextMatrix(pX, textStartY); cb.showText(c); } break; case UPCA: cb.setTextMatrix(0, textStartY); cb.showText(code.substring(0, 1)); for (int k = 1; k < 11; ++k) { String c = code.substring(k, k + 1); float len = font.getWidthPoint(c, size); float pX = keepBarX + TEXTPOS_EAN13[k] * x - len / 2; cb.setTextMatrix(pX, textStartY); cb.showText(c); } cb.setTextMatrix(keepBarX + x * (11 + 12 * 7), textStartY); cb.showText(code.substring(11, 12)); break; case UPCE: cb.setTextMatrix(0, textStartY); cb.showText(code.substring(0, 1)); for (int k = 1; k < 7; ++k) { String c = code.substring(k, k + 1); float len = font.getWidthPoint(c, size); float pX = keepBarX + TEXTPOS_EAN13[k - 1] * x - len / 2; cb.setTextMatrix(pX, textStartY); cb.showText(c); } cb.setTextMatrix(keepBarX + x * (9 + 6 * 7), textStartY); cb.showText(code.substring(7, 8)); break; case SUPP2: case SUPP5: for (int k = 0; k < code.length(); ++k) { String c = code.substring(k, k + 1); float len = font.getWidthPoint(c, size); float pX = (7.5f + (9 * k)) * x - len / 2; cb.setTextMatrix(pX, textStartY); cb.showText(c); } break; } cb.endText(); } return rect; } /** Creates a java.awt.Image. This image only * contains the bars without any text. * @param foreground the color of the bars * @param background the color of the background * @return the image */ public java.awt.Image createAwtImage(Color foreground, Color background) { int f = foreground.getRGB(); int g = background.getRGB(); Canvas canvas = new Canvas(); int width = 0; byte bars[] = null; switch (codeType) { case EAN13: bars = getBarsEAN13(code); width = 11 + 12 * 7; break; case EAN8: bars = getBarsEAN8(code); width = 11 + 8 * 7; break; case UPCA: bars = getBarsEAN13("0" + code); width = 11 + 12 * 7; break; case UPCE: bars = getBarsUPCE(code); width = 9 + 6 * 7; break; case SUPP2: bars = getBarsSupplemental2(code); width = 6 + 2 * 7; break; case SUPP5: bars = getBarsSupplemental5(code); width = 4 + 5 * 7 + 4 * 2; break; default: throw new RuntimeException("Invalid code type."); } boolean print = true; int ptr = 0; int height = (int)barHeight; int pix[] = new int[width * height]; for (int k = 0; k < bars.length; ++k) { int w = bars[k]; int c = g; if (print) c = f; print = !print; for (int j = 0; j < w; ++j) pix[ptr++] = c; } for (int k = width; k < pix.length; k += width) { System.arraycopy(pix, 0, pix, k, width); } Image img = canvas.createImage(new MemoryImageSource(width, height, pix, 0, width)); return img; } }