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iText, a free Java-PDF library
/*
* $Id: Barcode.java 6134 2013-12-23 13:15:14Z blowagie $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2014 iText Group NV
* 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
* ITEXT GROUP. ITEXT GROUP 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.ExceptionConverter;
import com.itextpdf.text.Image;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.BaseColor;
/** Base class containing properties and methods common to all
* barcode types.
*
* @author Paulo Soares
*/
public abstract class Barcode {
/** A type of barcode */
public static final int EAN13 = 1;
/** A type of barcode */
public static final int EAN8 = 2;
/** A type of barcode */
public static final int UPCA = 3;
/** A type of barcode */
public static final int UPCE = 4;
/** A type of barcode */
public static final int SUPP2 = 5;
/** A type of barcode */
public static final int SUPP5 = 6;
/** A type of barcode */
public static final int POSTNET = 7;
/** A type of barcode */
public static final int PLANET = 8;
/** A type of barcode */
public static final int CODE128 = 9;
/** A type of barcode */
public static final int CODE128_UCC = 10;
/** A type of barcode */
public static final int CODE128_RAW = 11;
/** A type of barcode */
public static final int CODABAR = 12;
/** The minimum bar width.
*/
protected float x;
/** The bar multiplier for wide bars or the distance between
* bars for Postnet and Planet.
*/
protected float n;
/** The text font. null if no text.
*/
protected BaseFont font;
/** The size of the text or the height of the shorter bar
* in Postnet.
*/
protected float size;
/** If positive, the text distance under the bars. If zero or negative,
* the text distance above the bars.
*/
protected float baseline;
/** The height of the bars.
*/
protected float barHeight;
/** The text alignment. Can be Element.ALIGN_LEFT,
* Element.ALIGN_CENTER or Element.ALIGN_RIGHT.
*/
protected int textAlignment;
/** The optional checksum generation.
*/
protected boolean generateChecksum;
/** Shows the generated checksum in the the text.
*/
protected boolean checksumText;
/** Show the start and stop character '*' in the text for
* the barcode 39 or 'ABCD' for codabar.
*/
protected boolean startStopText;
/** Generates extended barcode 39.
*/
protected boolean extended;
/** The code to generate.
*/
protected String code = "";
/** Show the guard bars for barcode EAN.
*/
protected boolean guardBars;
/** The code type.
*/
protected int codeType;
/** The ink spreading. */
protected float inkSpreading = 0;
/** Gets the minimum bar width.
* @return the minimum bar width
*/
public float getX() {
return x;
}
/** Sets the minimum bar width.
* @param x the minimum bar width
*/
public void setX(float x) {
this.x = x;
}
/** Gets the bar multiplier for wide bars.
* @return the bar multiplier for wide bars
*/
public float getN() {
return n;
}
/** Sets the bar multiplier for wide bars.
* @param n the bar multiplier for wide bars
*/
public void setN(float n) {
this.n = n;
}
/** Gets the text font. null if no text.
* @return the text font. null if no text
*/
public BaseFont getFont() {
return font;
}
/** Sets the text font.
* @param font the text font. Set to null to suppress any text
*/
public void setFont(BaseFont font) {
this.font = font;
}
/** Gets the size of the text.
* @return the size of the text
*/
public float getSize() {
return size;
}
/** Sets the size of the text.
* @param size the size of the text
*/
public void setSize(float size) {
this.size = size;
}
/** Gets the text baseline.
* If positive, the text distance under the bars. If zero or negative,
* the text distance above the bars.
* @return the baseline.
*/
public float getBaseline() {
return baseline;
}
/** Sets the text baseline.
* If positive, the text distance under the bars. If zero or negative,
* the text distance above the bars.
* @param baseline the baseline.
*/
public void setBaseline(float baseline) {
this.baseline = baseline;
}
/** Gets the height of the bars.
* @return the height of the bars
*/
public float getBarHeight() {
return barHeight;
}
/** Sets the height of the bars.
* @param barHeight the height of the bars
*/
public void setBarHeight(float barHeight) {
this.barHeight = barHeight;
}
/** Gets the text alignment. Can be Element.ALIGN_LEFT,
* Element.ALIGN_CENTER or Element.ALIGN_RIGHT.
* @return the text alignment
*/
public int getTextAlignment() {
return textAlignment;
}
/** Sets the text alignment. Can be Element.ALIGN_LEFT,
* Element.ALIGN_CENTER or Element.ALIGN_RIGHT.
* @param textAlignment the text alignment
*/
public void setTextAlignment(int textAlignment) {
this.textAlignment = textAlignment;
}
/** Gets the optional checksum generation.
* @return the optional checksum generation
*/
public boolean isGenerateChecksum() {
return generateChecksum;
}
/** Setter for property generateChecksum.
* @param generateChecksum New value of property generateChecksum.
*/
public void setGenerateChecksum(boolean generateChecksum) {
this.generateChecksum = generateChecksum;
}
/** Gets the property to show the generated checksum in the the text.
* @return value of property checksumText
*/
public boolean isChecksumText() {
return checksumText;
}
/** Sets the property to show the generated checksum in the the text.
* @param checksumText new value of property checksumText
*/
public void setChecksumText(boolean checksumText) {
this.checksumText = checksumText;
}
/** Sets the property to show the start and stop character '*' in the text for
* the barcode 39.
* @return value of property startStopText
*/
public boolean isStartStopText() {
return startStopText;
}
/** Gets the property to show the start and stop character '*' in the text for
* the barcode 39.
* @param startStopText new value of property startStopText
*/
public void setStartStopText(boolean startStopText) {
this.startStopText = startStopText;
}
/** Gets the property to generate extended barcode 39.
* @return value of property extended.
*/
public boolean isExtended() {
return extended;
}
/** Sets the property to generate extended barcode 39.
* @param extended new value of property extended
*/
public void setExtended(boolean extended) {
this.extended = extended;
}
/** Gets the code to generate.
* @return the code to generate
*/
public String getCode() {
return code;
}
/** Sets the code to generate.
* @param code the code to generate
*/
public void setCode(String code) {
this.code = code;
}
/** Gets the property to show the guard bars for barcode EAN.
* @return value of property guardBars
*/
public boolean isGuardBars() {
return guardBars;
}
/** Sets the property to show the guard bars for barcode EAN.
* @param guardBars new value of property guardBars
*/
public void setGuardBars(boolean guardBars) {
this.guardBars = guardBars;
}
/** Gets the code type.
* @return the code type
*/
public int getCodeType() {
return codeType;
}
/** Sets the code type.
* @param codeType the code type
*/
public void setCodeType(int codeType) {
this.codeType = codeType;
}
/** 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 abstract Rectangle getBarcodeSize();
/** 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 abstract Rectangle placeBarcode(PdfContentByte cb, BaseColor barColor, BaseColor textColor);
/** Creates a template with the barcode.
* @param cb the PdfContentByte to create the template. It
* serves no other use
* @param barColor the color of the bars. It can be null
* @param textColor the color of the text. It can be null
* @return the template
* @see #placeBarcode(PdfContentByte cb, BaseColor barColor, BaseColor textColor)
*/
public PdfTemplate createTemplateWithBarcode(PdfContentByte cb, BaseColor barColor, BaseColor textColor) {
PdfTemplate tp = cb.createTemplate(0, 0);
Rectangle rect = placeBarcode(tp, barColor, textColor);
tp.setBoundingBox(rect);
return tp;
}
/** Creates an Image with the barcode.
* @param cb the PdfContentByte to create the Image. It
* serves no other use
* @param barColor the color of the bars. It can be null
* @param textColor the color of the text. It can be null
* @return the Image
* @see #placeBarcode(PdfContentByte cb, BaseColor barColor, BaseColor textColor)
*/
public Image createImageWithBarcode(PdfContentByte cb, BaseColor barColor, BaseColor textColor) {
try {
return Image.getInstance(createTemplateWithBarcode(cb, barColor, textColor));
}
catch (Exception e) {
throw new ExceptionConverter(e);
}
}
/** Gets the amount of ink spreading.
* @return the ink spreading
*
*/
public float getInkSpreading() {
return this.inkSpreading;
}
/** Sets the amount of ink spreading. This value will be subtracted
* to the width of each bar. The actual value will depend on the ink
* and the printing medium.
* @param inkSpreading the ink spreading
*
*/
public void setInkSpreading(float inkSpreading) {
this.inkSpreading = inkSpreading;
}
/**
* The alternate text to be used, if present.
*/
protected String altText;
/**
* Gets the alternate text.
* @return the alternate text
*/
public String getAltText() {
return this.altText;
}
/**
* Sets the alternate text. If present, this text will be used instead of the
* text derived from the supplied code.
* @param altText the alternate text
*/
public void setAltText(String altText) {
this.altText = altText;
}
// 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 abstract java.awt.Image createAwtImage(java.awt.Color foreground, java.awt.Color background);
}
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