/* * $Id: Barcode128.java,v 1.18 2006/02/09 18:07:56 psoares33 Exp $ * * Copyright 2002-2006 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.Element; import com.lowagie.text.ExceptionConverter; import java.awt.Color; import java.awt.Image; import java.awt.Canvas; import java.awt.image.MemoryImageSource; /** * Implements the code 128 and UCC/EAN-128. Other symbologies are allowed in raw mode.

* The code types allowed are:
*

* The default parameters are: *
 * x = 0.8f;
 * font = BaseFont.createFont("Helvetica", "winansi", false);
 * size = 8;
 * baseline = size;
 * barHeight = size * 3;
 * textAlignment = Element.ALIGN_CENTER;
 * codeType = CODE128;
 * 
* @author Paulo Soares (psoares@consiste.pt) */ public class Barcode128 extends Barcode{ /** The bars to generate the code. */ static byte BARS[][] = { {2, 1, 2, 2, 2, 2}, {2, 2, 2, 1, 2, 2}, {2, 2, 2, 2, 2, 1}, {1, 2, 1, 2, 2, 3}, {1, 2, 1, 3, 2, 2}, {1, 3, 1, 2, 2, 2}, {1, 2, 2, 2, 1, 3}, {1, 2, 2, 3, 1, 2}, {1, 3, 2, 2, 1, 2}, {2, 2, 1, 2, 1, 3}, {2, 2, 1, 3, 1, 2}, {2, 3, 1, 2, 1, 2}, {1, 1, 2, 2, 3, 2}, {1, 2, 2, 1, 3, 2}, {1, 2, 2, 2, 3, 1}, {1, 1, 3, 2, 2, 2}, {1, 2, 3, 1, 2, 2}, {1, 2, 3, 2, 2, 1}, {2, 2, 3, 2, 1, 1}, {2, 2, 1, 1, 3, 2}, {2, 2, 1, 2, 3, 1}, {2, 1, 3, 2, 1, 2}, {2, 2, 3, 1, 1, 2}, {3, 1, 2, 1, 3, 1}, {3, 1, 1, 2, 2, 2}, {3, 2, 1, 1, 2, 2}, {3, 2, 1, 2, 2, 1}, {3, 1, 2, 2, 1, 2}, {3, 2, 2, 1, 1, 2}, {3, 2, 2, 2, 1, 1}, {2, 1, 2, 1, 2, 3}, {2, 1, 2, 3, 2, 1}, {2, 3, 2, 1, 2, 1}, {1, 1, 1, 3, 2, 3}, {1, 3, 1, 1, 2, 3}, {1, 3, 1, 3, 2, 1}, {1, 1, 2, 3, 1, 3}, {1, 3, 2, 1, 1, 3}, {1, 3, 2, 3, 1, 1}, {2, 1, 1, 3, 1, 3}, {2, 3, 1, 1, 1, 3}, {2, 3, 1, 3, 1, 1}, {1, 1, 2, 1, 3, 3}, {1, 1, 2, 3, 3, 1}, {1, 3, 2, 1, 3, 1}, {1, 1, 3, 1, 2, 3}, {1, 1, 3, 3, 2, 1}, {1, 3, 3, 1, 2, 1}, {3, 1, 3, 1, 2, 1}, {2, 1, 1, 3, 3, 1}, {2, 3, 1, 1, 3, 1}, {2, 1, 3, 1, 1, 3}, {2, 1, 3, 3, 1, 1}, {2, 1, 3, 1, 3, 1}, {3, 1, 1, 1, 2, 3}, {3, 1, 1, 3, 2, 1}, {3, 3, 1, 1, 2, 1}, {3, 1, 2, 1, 1, 3}, {3, 1, 2, 3, 1, 1}, {3, 3, 2, 1, 1, 1}, {3, 1, 4, 1, 1, 1}, {2, 2, 1, 4, 1, 1}, {4, 3, 1, 1, 1, 1}, {1, 1, 1, 2, 2, 4}, {1, 1, 1, 4, 2, 2}, {1, 2, 1, 1, 2, 4}, {1, 2, 1, 4, 2, 1}, {1, 4, 1, 1, 2, 2}, {1, 4, 1, 2, 2, 1}, {1, 1, 2, 2, 1, 4}, {1, 1, 2, 4, 1, 2}, {1, 2, 2, 1, 1, 4}, {1, 2, 2, 4, 1, 1}, {1, 4, 2, 1, 1, 2}, {1, 4, 2, 2, 1, 1}, {2, 4, 1, 2, 1, 1}, {2, 2, 1, 1, 1, 4}, {4, 1, 3, 1, 1, 1}, {2, 4, 1, 1, 1, 2}, {1, 3, 4, 1, 1, 1}, {1, 1, 1, 2, 4, 2}, {1, 2, 1, 1, 4, 2}, {1, 2, 1, 2, 4, 1}, {1, 1, 4, 2, 1, 2}, {1, 2, 4, 1, 1, 2}, {1, 2, 4, 2, 1, 1}, {4, 1, 1, 2, 1, 2}, {4, 2, 1, 1, 1, 2}, {4, 2, 1, 2, 1, 1}, {2, 1, 2, 1, 4, 1}, {2, 1, 4, 1, 2, 1}, {4, 1, 2, 1, 2, 1}, {1, 1, 1, 1, 4, 3}, {1, 1, 1, 3, 4, 1}, {1, 3, 1, 1, 4, 1}, {1, 1, 4, 1, 1, 3}, {1, 1, 4, 3, 1, 1}, {4, 1, 1, 1, 1, 3}, {4, 1, 1, 3, 1, 1}, {1, 1, 3, 1, 4, 1}, {1, 1, 4, 1, 3, 1}, {3, 1, 1, 1, 4, 1}, {4, 1, 1, 1, 3, 1}, {2, 1, 1, 4, 1, 2}, {2, 1, 1, 2, 1, 4}, {2, 1, 1, 2, 3, 2} }; /** The stop bars. */ static byte BARS_STOP[] = {2, 3, 3, 1, 1, 1, 2}; /** The charset code change. */ public static final char CODE_AB_TO_C = 99; /** The charset code change. */ public static final char CODE_AC_TO_B = 100; /** The charset code change. */ public static final char CODE_BC_TO_A = 101; /** The code for UCC/EAN-128. */ public static final char FNC1_INDEX = 102; /** The start code. */ public static final char START_A = 103; /** The start code. */ public static final char START_B = 104; /** The start code. */ public static final char START_C = 105; public static final char FNC1 = '\u00ca'; public static final char DEL = '\u00c3'; public static final char FNC3 = '\u00c4'; public static final char FNC2 = '\u00c5'; public static final char SHIFT = '\u00c6'; public static final char CODE_C = '\u00c7'; public static final char CODE_A = '\u00c8'; public static final char FNC4 = '\u00c8'; public static final char STARTA = '\u00cb'; public static final char STARTB = '\u00cc'; public static final char STARTC = '\u00cd'; private static final IntHashtable ais = new IntHashtable(); /** Creates new Barcode128 */ public Barcode128() { try { x = 0.8f; font = BaseFont.createFont("Helvetica", "winansi", false); size = 8; baseline = size; barHeight = size * 3; textAlignment = Element.ALIGN_CENTER; codeType = CODE128; } catch (Exception e) { throw new ExceptionConverter(e); } } /** * Removes the FNC1 codes in the text. * @param code the text to clean * @return the cleaned text */ public static String removeFNC1(String code) { int len = code.length(); StringBuffer buf = new StringBuffer(len); for (int k = 0; k < len; ++k) { char c = code.charAt(k); if (c >= 32 && c <= 126) buf.append(c); } return buf.toString(); } /** * Gets the human readable text of a sequence of AI. * @param code the text * @return the human readable text */ public static String getHumanReadableUCCEAN(String code) { StringBuffer buf = new StringBuffer(); String fnc1 = String.valueOf(FNC1); try { while (true) { if (code.startsWith(fnc1)) { code = code.substring(1); continue; } int n = 0; int idlen = 0; for (int k = 2; k < 5; ++k) { if (code.length() < k) break; if ((n = ais.get(Integer.parseInt(code.substring(0, k)))) != 0) { idlen = k; break; } } if (idlen == 0) break; buf.append('(').append(code.substring(0, idlen)).append(')'); code = code.substring(idlen); if (n > 0) { n -= idlen; if (code.length() <= n) break; buf.append(removeFNC1(code.substring(0, n))); code = code.substring(n); } else { int idx = code.indexOf(FNC1); if (idx < 0) break; buf.append(code.substring(0,idx)); code = code.substring(idx + 1); } } } catch (Exception e) { //empty } buf.append(removeFNC1(code)); return buf.toString(); } /** Returns true if the next numDigits * starting from index textIndex are numeric skipping any FNC1. * @param text the text to check * @param textIndex where to check from * @param numDigits the number of digits to check * @return the check result */ static boolean isNextDigits(String text, int textIndex, int numDigits) { int len = text.length(); while (textIndex < len && numDigits > 0) { if (text.charAt(textIndex) == FNC1) { ++textIndex; continue; } int n = Math.min(2, numDigits); if (textIndex + n > len) return false; while (n-- > 0) { char c = text.charAt(textIndex++); if (c < '0' || c > '9') return false; --numDigits; } } return numDigits == 0; } /** Packs the digits for charset C also considering FNC1. It assumes that all the parameters * are valid. * @param text the text to pack * @param textIndex where to pack from * @param numDigits the number of digits to pack. It is always an even number * @return the packed digits, two digits per character */ static String getPackedRawDigits(String text, int textIndex, int numDigits) { String out = ""; int start = textIndex; while (numDigits > 0) { if (text.charAt(textIndex) == FNC1) { out += FNC1_INDEX; ++textIndex; continue; } numDigits -= 2; int c1 = text.charAt(textIndex++) - '0'; int c2 = text.charAt(textIndex++) - '0'; out += (char)(c1 * 10 + c2); } return (char)(textIndex - start) + out; } /** Converts the human readable text to the characters needed to * create a barcode. Some optimization is done to get the shortest code. * @param text the text to convert * @param ucc true if it is an UCC/EAN-128. In this case * the character FNC1 is added * @return the code ready to be fed to getBarsCode128Raw() */ public static String getRawText(String text, boolean ucc) { String out = ""; int tLen = text.length(); if (tLen == 0) { out += START_B; if (ucc) out += FNC1_INDEX; return out; } int c = 0; for (int k = 0; k < tLen; ++k) { c = text.charAt(k); if (c > 127 && c != FNC1) throw new RuntimeException("There are illegal characters for barcode 128 in '" + text + "'."); } c = text.charAt(0); char currentCode = START_B; int index = 0; if (isNextDigits(text, index, 2)) { currentCode = START_C; out += currentCode; if (ucc) out += FNC1_INDEX; String out2 = getPackedRawDigits(text, index, 2); index += (int)out2.charAt(0); out += out2.substring(1); } else if (c < ' ') { currentCode = START_A; out += currentCode; if (ucc) out += FNC1_INDEX; out += (char)(c + 64); ++index; } else { out += currentCode; if (ucc) out += FNC1_INDEX; if (c == FNC1) out += FNC1_INDEX; else out += (char)(c - ' '); ++index; } while (index < tLen) { switch (currentCode) { case START_A: { if (isNextDigits(text, index, 4)) { currentCode = START_C; out += CODE_AB_TO_C; String out2 = getPackedRawDigits(text, index, 4); index += (int)out2.charAt(0); out += out2.substring(1); } else { c = text.charAt(index++); if (c == FNC1) out += FNC1_INDEX; else if (c > '_') { currentCode = START_B; out += CODE_AC_TO_B; out += (char)(c - ' '); } else if (c < ' ') out += (char)(c + 64); else out += (char)(c - ' '); } } break; case START_B: { if (isNextDigits(text, index, 4)) { currentCode = START_C; out += CODE_AB_TO_C; String out2 = getPackedRawDigits(text, index, 4); index += (int)out2.charAt(0); out += out2.substring(1); } else { c = text.charAt(index++); if (c == FNC1) out += FNC1_INDEX; else if (c < ' ') { currentCode = START_A; out += CODE_BC_TO_A; out += (char)(c + 64); } else { out += (char)(c - ' '); } } } break; case START_C: { if (isNextDigits(text, index, 2)) { String out2 = getPackedRawDigits(text, index, 2); index += (int)out2.charAt(0); out += out2.substring(1); } else { c = text.charAt(index++); if (c == FNC1) out += FNC1_INDEX; else if (c < ' ') { currentCode = START_A; out += CODE_BC_TO_A; out += (char)(c + 64); } else { currentCode = START_B; out += CODE_AC_TO_B; out += (char)(c - ' '); } } } break; } } return out; } /** Generates the bars. The input has the actual barcodes, not * the human readable text. * @param text the barcode * @return the bars */ public static byte[] getBarsCode128Raw(String text) { int idx = text.indexOf('\uffff'); if (idx >= 0) text = text.substring(0, idx); int chk = text.charAt(0); for (int k = 1; k < text.length(); ++k) chk += k * text.charAt(k); chk = chk % 103; text += (char)chk; byte bars[] = new byte[(text.length() + 1) * 6 + 7]; int k; for (k = 0; k < text.length(); ++k) System.arraycopy(BARS[text.charAt(k)], 0, bars, k * 6, 6); System.arraycopy(BARS_STOP, 0, bars, k * 6, 7); 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 fontX = 0; float fontY = 0; String fullCode; if (font != null) { if (baseline > 0) fontY = baseline - font.getFontDescriptor(BaseFont.DESCENT, size); else fontY = -baseline + size; if (codeType == CODE128_RAW) { int idx = code.indexOf('\uffff'); if (idx < 0) fullCode = ""; else fullCode = code.substring(idx + 1); } else if (codeType == CODE128_UCC) fullCode = getHumanReadableUCCEAN(code); else fullCode = removeFNC1(code); fontX = font.getWidthPoint(altText != null ? altText : fullCode, size); } if (codeType == CODE128_RAW) { int idx = code.indexOf('\uffff'); if (idx >= 0) fullCode = code.substring(0, idx); else fullCode = code; } else { fullCode = getRawText(code, codeType == CODE128_UCC); } int len = fullCode.length(); float fullWidth = (len + 2) * 11 * x + 2 * x; fullWidth = Math.max(fullWidth, fontX); float fullHeight = barHeight + fontY; return new Rectangle(fullWidth, fullHeight); } /** 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) { String fullCode; if (codeType == CODE128_RAW) { int idx = code.indexOf('\uffff'); if (idx < 0) fullCode = ""; else fullCode = code.substring(idx + 1); } else if (codeType == CODE128_UCC) fullCode = getHumanReadableUCCEAN(code); else fullCode = removeFNC1(code); float fontX = 0; if (font != null) { fontX = font.getWidthPoint(fullCode = altText != null ? altText : fullCode, size); } String bCode; if (codeType == CODE128_RAW) { int idx = code.indexOf('\uffff'); if (idx >= 0) bCode = code.substring(0, idx); else bCode = code; } else { bCode = getRawText(code, codeType == CODE128_UCC); } int len = bCode.length(); float fullWidth = (len + 2) * 11 * x + 2 * x; float barStartX = 0; float textStartX = 0; switch (textAlignment) { case Element.ALIGN_LEFT: break; case Element.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 = -font.getFontDescriptor(BaseFont.DESCENT, size); barStartY = textStartY + baseline; } } byte bars[] = getBarsCode128Raw(bCode); boolean print = true; if (barColor != null) cb.setColorFill(barColor); for (int k = 0; k < bars.length; ++k) { float w = bars[k] * x; if (print) 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); cb.setTextMatrix(textStartX, textStartY); cb.showText(fullCode); cb.endText(); } return getBarcodeSize(); } /** 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(); String bCode; if (codeType == CODE128_RAW) { int idx = code.indexOf('\uffff'); if (idx >= 0) bCode = code.substring(0, idx); else bCode = code; } else { bCode = getRawText(code, codeType == CODE128_UCC); } int len = bCode.length(); int fullWidth = (len + 2) * 11 + 2; byte bars[] = getBarsCode128Raw(bCode); boolean print = true; int ptr = 0; int height = (int)barHeight; int pix[] = new int[fullWidth * 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 = fullWidth; k < pix.length; k += fullWidth) { System.arraycopy(pix, 0, pix, k, fullWidth); } Image img = canvas.createImage(new MemoryImageSource(fullWidth, height, pix, 0, fullWidth)); return img; } /** * Sets the code to generate. If it's an UCC code and starts with '(' it will * be split by the AI. This code in UCC mode is valid: *

* (01)00000090311314(10)ABC123(15)060916 * @param code the code to generate */ public void setCode(String code) { if (getCodeType() == Barcode128.CODE128_UCC && code.startsWith("(")) { int idx = 0; String ret = ""; while (idx >= 0) { int end = code.indexOf(')', idx); if (end < 0) throw new IllegalArgumentException("Badly formed UCC string: " + code); String sai = code.substring(idx + 1, end); if (sai.length() < 2) throw new IllegalArgumentException("AI too short: (" + sai + ")"); int ai = Integer.parseInt(sai); int len = ais.get(ai); if (len == 0) throw new IllegalArgumentException("AI not found: (" + sai + ")"); sai = String.valueOf(ai); if (sai.length() == 1) sai = "0" + sai; idx = code.indexOf('(', end); int next = (idx < 0 ? code.length() : idx); ret += sai + code.substring(end + 1, next); if (len < 0) { if (idx >= 0) ret += FNC1; } else if (next - end - 1 + sai.length() != len) throw new IllegalArgumentException("Invalid AI length: (" + sai + ")"); } super.setCode(ret); } else super.setCode(code); } static { ais.put(0, 20); ais.put(1, 16); ais.put(2, 16); ais.put(10, -1); ais.put(11, 9); ais.put(12, 8); ais.put(13, 8); ais.put(15, 8); ais.put(17, 8); ais.put(20, 4); ais.put(21, -1); ais.put(22, -1); ais.put(23, -1); ais.put(240, -1); ais.put(241, -1); ais.put(250, -1); ais.put(251, -1); ais.put(252, -1); ais.put(30, -1); for (int k = 3100; k < 3700; ++k) ais.put(k, 10); ais.put(37, -1); for (int k = 3900; k < 3940; ++k) ais.put(k, -1); ais.put(400, -1); ais.put(401, -1); ais.put(402, 20); ais.put(403, -1); for (int k = 410; k < 416; ++k) ais.put(k, 16); ais.put(420, -1); ais.put(421, -1); ais.put(422, 6); ais.put(423, -1); ais.put(424, 6); ais.put(425, 6); ais.put(426, 6); ais.put(7001, 17); ais.put(7002, -1); for (int k = 7030; k < 704; ++k) ais.put(k, -1); ais.put(8001, 18); ais.put(8002, -1); ais.put(8003, -1); ais.put(8004, -1); ais.put(8005, 10); ais.put(8006, 22); ais.put(8007, -1); ais.put(8008, -1); ais.put(8018, 22); ais.put(8020, -1); ais.put(8100, 10); ais.put(8101, 14); ais.put(8102, 6); for (int k = 90; k < 100; ++k) ais.put(k, -1); } }