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Diffstat (limited to 'src/main/java/com/lowagie/text/pdf/BarcodePostnet.java')
| -rw-r--r-- | src/main/java/com/lowagie/text/pdf/BarcodePostnet.java | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/src/main/java/com/lowagie/text/pdf/BarcodePostnet.java b/src/main/java/com/lowagie/text/pdf/BarcodePostnet.java new file mode 100644 index 0000000..5befa67 --- /dev/null +++ b/src/main/java/com/lowagie/text/pdf/BarcodePostnet.java @@ -0,0 +1,233 @@ +/*
+ * 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 java.awt.Color;
+import java.awt.Image;
+import java.awt.Canvas;
+import java.awt.image.MemoryImageSource;
+
+/** Implements the Postnet and Planet barcodes. The default parameters are:
+ * <pre>
+ *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
+ * </pre>
+ *
+ * @author Paulo Soares (psoares@consiste.pt)
+ */
+public class BarcodePostnet extends Barcode{
+
+ /** The bars for each character.
+ */
+ static 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 <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) {
+ 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();
+ }
+
+ /** 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();
+ int barWidth = (int)x;
+ if (barWidth <= 0)
+ barWidth = 1;
+ int barDistance = (int)n;
+ if (barDistance <= barWidth)
+ barDistance = barWidth + 1;
+ int barShort = (int)size;
+ if (barShort <= 0)
+ barShort = 1;
+ int barTall = (int)barHeight;
+ if (barTall <= barShort)
+ barTall = barShort + 1;
+ int width = ((code.length() + 1) * 5 + 1) * barDistance + barWidth;
+ int pix[] = new int[width * barTall];
+ byte bars[] = getBarsPostnet(code);
+ byte flip = 1;
+ if (codeType == PLANET) {
+ flip = 0;
+ bars[0] = 0;
+ bars[bars.length - 1] = 0;
+ }
+ int idx = 0;
+ for (int k = 0; k < bars.length; ++k) {
+ boolean dot = (bars[k] == flip);
+ for (int j = 0; j < barDistance; ++j) {
+ pix[idx + j] = ((dot && j < barWidth) ? f : g);
+ }
+ idx += barDistance;
+ }
+ int limit = width * (barTall - barShort);
+ for (int k = width; k < limit; k += width)
+ System.arraycopy(pix, 0, pix, k, width);
+ idx = limit;
+ for (int k = 0; k < bars.length; ++k) {
+ for (int j = 0; j < barDistance; ++j) {
+ pix[idx + j] = ((j < barWidth) ? f : g);
+ }
+ idx += barDistance;
+ }
+ for (int k = limit + width; k < pix.length; k += width)
+ System.arraycopy(pix, limit, pix, k, width);
+ Image img = canvas.createImage(new MemoryImageSource(width, barTall, pix, 0, width));
+
+ return img;
+ }
+}
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