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iText, a free Java-PDF library
/*
* 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 java.awt.Color;
import com.lowagie.text.Rectangle;
/** 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 ([email protected])
*/
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, Color barColor, Color 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();
}
/** 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) {
throw new UnsupportedOperationException("The two barcodes must be composed externally.");
}
}