/*
* $Id: BarcodePostnet.java 4144 2009-12-06 19:08:44Z psoares33 $
*
* This file is part of the iText project.
* Copyright (c) 1998-2009 1T3XT BVBA
* 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):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
* 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
*
* This program 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* you 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
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: sales@itextpdf.com
*/
package com.itextpdf.text.pdf;
import java.awt.Canvas;
import java.awt.Image;
import java.awt.image.MemoryImageSource;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.BaseColor;
/** 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
*/
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 <CODE>PdfContentByte</CODE>. The
* barcode is always placed at coordinates (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, 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();
}
/** 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(java.awt.Color foreground, java.awt.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;
}
}