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Diffstat (limited to 'src/main/java/com/lowagie/text/pdf/Barcode39.java')
| -rw-r--r-- | src/main/java/com/lowagie/text/pdf/Barcode39.java | 392 |
1 files changed, 392 insertions, 0 deletions
diff --git a/src/main/java/com/lowagie/text/pdf/Barcode39.java b/src/main/java/com/lowagie/text/pdf/Barcode39.java new file mode 100644 index 0000000..cf9ecdf --- /dev/null +++ b/src/main/java/com/lowagie/text/pdf/Barcode39.java @@ -0,0 +1,392 @@ +/*
+ * $Id: Barcode39.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.ExceptionConverter;
+import com.lowagie.text.Element;
+import com.lowagie.text.Rectangle;
+import java.awt.Color;
+import java.awt.Image;
+import java.awt.Canvas;
+import java.awt.image.MemoryImageSource;
+
+/** Implements the code 39 and code 39 extended. The default parameters are:
+ * <pre>
+ *x = 0.8f;
+ *n = 2;
+ *font = BaseFont.createFont("Helvetica", "winansi", false);
+ *size = 8;
+ *baseline = size;
+ *barHeight = size * 3;
+ *textAlignment = Element.ALIGN_CENTER;
+ *generateChecksum = false;
+ *checksumText = false;
+ *startStopText = true;
+ *extended = false;
+ * </pre>
+ *
+ * @author Paulo Soares (psoares@consiste.pt)
+ */
+public class Barcode39 extends Barcode{
+
+ /** The bars to generate the code.
+ */
+ static byte BARS[][] =
+ {
+ {0,0,0,1,1,0,1,0,0},
+ {1,0,0,1,0,0,0,0,1},
+ {0,0,1,1,0,0,0,0,1},
+ {1,0,1,1,0,0,0,0,0},
+ {0,0,0,1,1,0,0,0,1},
+ {1,0,0,1,1,0,0,0,0},
+ {0,0,1,1,1,0,0,0,0},
+ {0,0,0,1,0,0,1,0,1},
+ {1,0,0,1,0,0,1,0,0},
+ {0,0,1,1,0,0,1,0,0},
+ {1,0,0,0,0,1,0,0,1},
+ {0,0,1,0,0,1,0,0,1},
+ {1,0,1,0,0,1,0,0,0},
+ {0,0,0,0,1,1,0,0,1},
+ {1,0,0,0,1,1,0,0,0},
+ {0,0,1,0,1,1,0,0,0},
+ {0,0,0,0,0,1,1,0,1},
+ {1,0,0,0,0,1,1,0,0},
+ {0,0,1,0,0,1,1,0,0},
+ {0,0,0,0,1,1,1,0,0},
+ {1,0,0,0,0,0,0,1,1},
+ {0,0,1,0,0,0,0,1,1},
+ {1,0,1,0,0,0,0,1,0},
+ {0,0,0,0,1,0,0,1,1},
+ {1,0,0,0,1,0,0,1,0},
+ {0,0,1,0,1,0,0,1,0},
+ {0,0,0,0,0,0,1,1,1},
+ {1,0,0,0,0,0,1,1,0},
+ {0,0,1,0,0,0,1,1,0},
+ {0,0,0,0,1,0,1,1,0},
+ {1,1,0,0,0,0,0,0,1},
+ {0,1,1,0,0,0,0,0,1},
+ {1,1,1,0,0,0,0,0,0},
+ {0,1,0,0,1,0,0,0,1},
+ {1,1,0,0,1,0,0,0,0},
+ {0,1,1,0,1,0,0,0,0},
+ {0,1,0,0,0,0,1,0,1},
+ {1,1,0,0,0,0,1,0,0},
+ {0,1,1,0,0,0,1,0,0},
+ {0,1,0,1,0,1,0,0,0},
+ {0,1,0,1,0,0,0,1,0},
+ {0,1,0,0,0,1,0,1,0},
+ {0,0,0,1,0,1,0,1,0},
+ {0,1,0,0,1,0,1,0,0}
+ };
+
+ /** The index chars to <CODE>BARS</CODE>.
+ */
+ static String CHARS = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%*";
+
+ /** The character combinations to make the code 39 extended.
+ */
+ static String EXTENDED = "%U" +
+ "$A$B$C$D$E$F$G$H$I$J$K$L$M$N$O$P$Q$R$S$T$U$V$W$X$Y$Z" +
+ "%A%B%C%D%E /A/B/C/D/E/F/G/H/I/J/K/L - ./O" +
+ " 0 1 2 3 4 5 6 7 8 9/Z%F%G%H%I%J%V" +
+ " A B C D E F G H I J K L M N O P Q R S T U V W X Y Z" +
+ "%K%L%M%N%O%W" +
+ "+A+B+C+D+E+F+G+H+I+J+K+L+M+N+O+P+Q+R+S+T+U+V+W+X+Y+Z" +
+ "%P%Q%R%S%T";
+
+ /** Creates a new Barcode39.
+ */
+ public Barcode39() {
+ try {
+ x = 0.8f;
+ n = 2;
+ font = BaseFont.createFont("Helvetica", "winansi", false);
+ size = 8;
+ baseline = size;
+ barHeight = size * 3;
+ textAlignment = Element.ALIGN_CENTER;
+ generateChecksum = false;
+ checksumText = false;
+ startStopText = true;
+ extended = false;
+ }
+ catch (Exception e) {
+ throw new ExceptionConverter(e);
+ }
+ }
+
+ /** Creates the bars.
+ * @param text the text to create the bars. This text does not include the start and
+ * stop characters
+ * @return the bars
+ */
+ public static byte[] getBarsCode39(String text) {
+ text = "*" + text + "*";
+ byte bars[] = new byte[text.length() * 10 - 1];
+ for (int k = 0; k < text.length(); ++k) {
+ int idx = CHARS.indexOf(text.charAt(k));
+ if (idx < 0)
+ throw new IllegalArgumentException("The character '" + text.charAt(k) + "' is illegal in code 39.");
+ System.arraycopy(BARS[idx], 0, bars, k * 10, 9);
+ }
+ return bars;
+ }
+
+ /** Converts the extended text into a normal, escaped text,
+ * ready to generate bars.
+ * @param text the extended text
+ * @return the escaped text
+ */
+ public static String getCode39Ex(String text) {
+ String out = "";
+ for (int k = 0; k < text.length(); ++k) {
+ char c = text.charAt(k);
+ if (c > 127)
+ throw new IllegalArgumentException("The character '" + c + "' is illegal in code 39 extended.");
+ char c1 = EXTENDED.charAt(c * 2);
+ char c2 = EXTENDED.charAt(c * 2 + 1);
+ if (c1 != ' ')
+ out += c1;
+ out += c2;
+ }
+ return out;
+ }
+
+ /** Calculates the checksum.
+ * @param text the text
+ * @return the checksum
+ */
+ static char getChecksum(String text) {
+ int chk = 0;
+ for (int k = 0; k < text.length(); ++k) {
+ int idx = CHARS.indexOf(text.charAt(k));
+ if (idx < 0)
+ throw new IllegalArgumentException("The character '" + text.charAt(k) + "' is illegal in code 39.");
+ chk += idx;
+ }
+ return CHARS.charAt(chk % 43);
+ }
+
+ /** 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;
+ if (font != null) {
+ if (baseline > 0)
+ fontY = baseline - font.getFontDescriptor(BaseFont.DESCENT, size);
+ else
+ fontY = -baseline + size;
+ String fullCode = code;
+ if (generateChecksum && checksumText)
+ fullCode += getChecksum(fullCode);
+ if (startStopText)
+ fullCode = "*" + fullCode + "*";
+ fontX = font.getWidthPoint(altText != null ? altText : fullCode, size);
+ }
+ String fullCode = code;
+ if (extended)
+ fullCode = getCode39Ex(code);
+ int len = fullCode.length() + 2;
+ if (generateChecksum)
+ ++len;
+ float fullWidth = len * (6 * x + 3 * x * n) + (len - 1) * x;
+ fullWidth = Math.max(fullWidth, fontX);
+ float fullHeight = barHeight + fontY;
+ return new Rectangle(fullWidth, fullHeight);
+ }
+
+ /** Places the barcode in a <CODE>PdfContentByte</CODE>. The
+ * barcode is always placed at coodinates (0, 0). Use the
+ * translation matrix to move it elsewhere.<p>
+ * The bars and text are written in the following colors:<p>
+ * <P><TABLE BORDER=1>
+ * <TR>
+ * <TH><P><CODE>barColor</CODE></TH>
+ * <TH><P><CODE>textColor</CODE></TH>
+ * <TH><P>Result</TH>
+ * </TR>
+ * <TR>
+ * <TD><P><CODE>null</CODE></TD>
+ * <TD><P><CODE>null</CODE></TD>
+ * <TD><P>bars and text painted with current fill color</TD>
+ * </TR>
+ * <TR>
+ * <TD><P><CODE>barColor</CODE></TD>
+ * <TD><P><CODE>null</CODE></TD>
+ * <TD><P>bars and text painted with <CODE>barColor</CODE></TD>
+ * </TR>
+ * <TR>
+ * <TD><P><CODE>null</CODE></TD>
+ * <TD><P><CODE>textColor</CODE></TD>
+ * <TD><P>bars painted with current color<br>text painted with <CODE>textColor</CODE></TD>
+ * </TR>
+ * <TR>
+ * <TD><P><CODE>barColor</CODE></TD>
+ * <TD><P><CODE>textColor</CODE></TD>
+ * <TD><P>bars painted with <CODE>barColor</CODE><br>text painted with <CODE>textColor</CODE></TD>
+ * </TR>
+ * </TABLE>
+ * @param cb the <CODE>PdfContentByte</CODE> where the barcode will be placed
+ * @param barColor the color of the bars. It can be <CODE>null</CODE>
+ * @param textColor the color of the text. It can be <CODE>null</CODE>
+ * @return the dimensions the barcode occupies
+ */
+ public Rectangle placeBarcode(PdfContentByte cb, Color barColor, Color textColor) {
+ String fullCode = code;
+ float fontX = 0;
+ if (font != null) {
+ if (generateChecksum && checksumText)
+ fullCode += getChecksum(fullCode);
+ if (startStopText)
+ fullCode = "*" + fullCode + "*";
+ fontX = font.getWidthPoint(fullCode = altText != null ? altText : fullCode, size);
+ }
+ String bCode = code;
+ if (extended)
+ bCode = getCode39Ex(code);
+ if (generateChecksum)
+ bCode += getChecksum(bCode);
+ int len = bCode.length() + 2;
+ float fullWidth = len * (6 * x + 3 * x * n) + (len - 1) * 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[] = getBarsCode39(bCode);
+ boolean print = true;
+ if (barColor != null)
+ cb.setColorFill(barColor);
+ for (int k = 0; k < bars.length; ++k) {
+ float w = (bars[k] == 0 ? x : x * n);
+ 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 <CODE>java.awt.Image</CODE>. 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 = code;
+ if (extended)
+ bCode = getCode39Ex(code);
+ if (generateChecksum)
+ bCode += getChecksum(bCode);
+ int len = bCode.length() + 2;
+ int nn = (int)n;
+ int fullWidth = len * (6 + 3 * nn) + (len - 1);
+ byte bars[] = getBarsCode39(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] == 0 ? 1 : nn);
+ 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;
+ }
+}
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