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iText, a free Java-PDF library
/*
* $Id: BarcodeEANSUPP.java 5075 2012-02-27 16:36:18Z blowagie $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2012 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,
* a covered work 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: [email protected]
*/
package com.itextpdf.text.pdf;
import com.itextpdf.text.error_messages.MessageLocalization;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.BaseColor;
/** This class takes 2 barcodes, an EAN/UPC and a supplemental
* and creates a single barcode with both combined in the
* expected layout. The UPC/EAN should have a positive text
* baseline and the supplemental a negative one (in the supplemental
* the text is on the top of the barcode.
* The default parameters are:
*
*n = 8; // horizontal distance between the two barcodes
*
*
* @author Paulo Soares
*/
public class BarcodeEANSUPP extends Barcode{
/** The barcode with the EAN/UPC.
*/
protected Barcode ean;
/** The barcode with the supplemental.
*/
protected Barcode supp;
/** Creates new combined barcode.
* @param ean the EAN/UPC barcode
* @param supp the supplemental barcode
*/
public BarcodeEANSUPP(Barcode ean, Barcode supp) {
n = 8; // horizontal distance between the two barcodes
this.ean = ean;
this.supp = supp;
}
/** 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() {
Rectangle rect = ean.getBarcodeSize();
rect.setRight(rect.getWidth() + supp.getBarcodeSize().getWidth() + n);
return rect;
}
/** Places the barcode in a PdfContentByte. The
* barcode is always placed at coordinates (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, BaseColor barColor, BaseColor textColor) {
if (supp.getFont() != null)
supp.setBarHeight(ean.getBarHeight() + supp.getBaseline() - supp.getFont().getFontDescriptor(BaseFont.CAPHEIGHT, supp.getSize()));
else
supp.setBarHeight(ean.getBarHeight());
Rectangle eanR = ean.getBarcodeSize();
cb.saveState();
ean.placeBarcode(cb, barColor, textColor);
cb.restoreState();
cb.saveState();
cb.concatCTM(1, 0, 0, 1, eanR.getWidth() + n, eanR.getHeight() - ean.getBarHeight());
supp.placeBarcode(cb, barColor, textColor);
cb.restoreState();
return getBarcodeSize();
}
// AWT related methods (remove this if you port to Android / GAE)
/** 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(java.awt.Color foreground, java.awt.Color background) {
throw new UnsupportedOperationException(MessageLocalization.getComposedMessage("the.two.barcodes.must.be.composed.externally"));
}
}