diff options
Diffstat (limited to 'src/main/java/com/lowagie/text/pdf/BarcodeEAN.java')
| -rw-r--r-- | src/main/java/com/lowagie/text/pdf/BarcodeEAN.java | 718 |
1 files changed, 718 insertions, 0 deletions
diff --git a/src/main/java/com/lowagie/text/pdf/BarcodeEAN.java b/src/main/java/com/lowagie/text/pdf/BarcodeEAN.java new file mode 100644 index 0000000..c6d5f28 --- /dev/null +++ b/src/main/java/com/lowagie/text/pdf/BarcodeEAN.java @@ -0,0 +1,718 @@ +/*
+ * 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 com.lowagie.text.ExceptionConverter;
+import java.util.Arrays;
+import java.awt.Color;
+import java.awt.Image;
+import java.awt.Canvas;
+import java.awt.image.MemoryImageSource;
+
+/** Generates barcodes in several formats: EAN13, EAN8, UPCA, UPCE,
+ * supplemental 2 and 5. The default parameters are:
+ * <pre>
+ *x = 0.8f;
+ *font = BaseFont.createFont("Helvetica", "winansi", false);
+ *size = 8;
+ *baseline = size;
+ *barHeight = size * 3;
+ *guardBars = true;
+ *codeType = EAN13;
+ *code = "";
+ * </pre>
+ *
+ * @author Paulo Soares (psoares@consiste.pt)
+ */
+public class BarcodeEAN extends Barcode{
+
+ /** The bar positions that are guard bars.*/
+ static int GUARD_EMPTY[] = {};
+ /** The bar positions that are guard bars.*/
+ static int GUARD_UPCA[] = {0, 2, 4, 6, 28, 30, 52, 54, 56, 58};
+ /** The bar positions that are guard bars.*/
+ static int GUARD_EAN13[] = {0, 2, 28, 30, 56, 58};
+ /** The bar positions that are guard bars.*/
+ static int GUARD_EAN8[] = {0, 2, 20, 22, 40, 42};
+ /** The bar positions that are guard bars.*/
+ static int GUARD_UPCE[] = {0, 2, 28, 30, 32};
+ /** The x coordinates to place the text.*/
+ static float TEXTPOS_EAN13[] = {6.5f, 13.5f, 20.5f, 27.5f, 34.5f, 41.5f, 53.5f, 60.5f, 67.5f, 74.5f, 81.5f, 88.5f};
+ /** The x coordinates to place the text.*/
+ static float TEXTPOS_EAN8[] = {6.5f, 13.5f, 20.5f, 27.5f, 39.5f, 46.5f, 53.5f, 60.5f};
+ /** The basic bar widths.*/
+ static byte BARS[][] =
+ {
+ {3, 2, 1, 1}, // 0
+ {2, 2, 2, 1}, // 1
+ {2, 1, 2, 2}, // 2
+ {1, 4, 1, 1}, // 3
+ {1, 1, 3, 2}, // 4
+ {1, 2, 3, 1}, // 5
+ {1, 1, 1, 4}, // 6
+ {1, 3, 1, 2}, // 7
+ {1, 2, 1, 3}, // 8
+ {3, 1, 1, 2} // 9
+ };
+
+ /** The total number of bars for EAN13.*/
+ static final int TOTALBARS_EAN13 = 11 + 12 * 4;
+ /** The total number of bars for EAN8.*/
+ static final int TOTALBARS_EAN8 = 11 + 8 * 4;
+ /** The total number of bars for UPCE.*/
+ static final int TOTALBARS_UPCE = 9 + 6 * 4;
+ /** The total number of bars for supplemental 2.*/
+ static final int TOTALBARS_SUPP2 = 13;
+ /** The total number of bars for supplemental 5.*/
+ static final int TOTALBARS_SUPP5 = 31;
+ /** Marker for odd parity.*/
+ static final int ODD = 0;
+ /** Marker for even parity.*/
+ static final int EVEN = 1;
+
+ /** Sequence of parities to be used with EAN13.*/
+ static byte PARITY13[][] =
+ {
+ {ODD, ODD, ODD, ODD, ODD, ODD}, // 0
+ {ODD, ODD, EVEN, ODD, EVEN, EVEN}, // 1
+ {ODD, ODD, EVEN, EVEN, ODD, EVEN}, // 2
+ {ODD, ODD, EVEN, EVEN, EVEN, ODD}, // 3
+ {ODD, EVEN, ODD, ODD, EVEN, EVEN}, // 4
+ {ODD, EVEN, EVEN, ODD, ODD, EVEN}, // 5
+ {ODD, EVEN, EVEN, EVEN, ODD, ODD}, // 6
+ {ODD, EVEN, ODD, EVEN, ODD, EVEN}, // 7
+ {ODD, EVEN, ODD, EVEN, EVEN, ODD}, // 8
+ {ODD, EVEN, EVEN, ODD, EVEN, ODD} // 9
+ };
+
+ /** Sequence of parities to be used with supplemental 2.*/
+ static byte PARITY2[][] =
+ {
+ {ODD, ODD}, // 0
+ {ODD, EVEN}, // 1
+ {EVEN, ODD}, // 2
+ {EVEN, EVEN} // 3
+ };
+
+ /** Sequence of parities to be used with supplemental 2.*/
+ static byte PARITY5[][] =
+ {
+ {EVEN, EVEN, ODD, ODD, ODD}, // 0
+ {EVEN, ODD, EVEN, ODD, ODD}, // 1
+ {EVEN, ODD, ODD, EVEN, ODD}, // 2
+ {EVEN, ODD, ODD, ODD, EVEN}, // 3
+ {ODD, EVEN, EVEN, ODD, ODD}, // 4
+ {ODD, ODD, EVEN, EVEN, ODD}, // 5
+ {ODD, ODD, ODD, EVEN, EVEN}, // 6
+ {ODD, EVEN, ODD, EVEN, ODD}, // 7
+ {ODD, EVEN, ODD, ODD, EVEN}, // 8
+ {ODD, ODD, EVEN, ODD, EVEN} // 9
+ };
+
+ /** Sequence of parities to be used with UPCE.*/
+ static byte PARITYE[][] =
+ {
+ {EVEN, EVEN, EVEN, ODD, ODD, ODD}, // 0
+ {EVEN, EVEN, ODD, EVEN, ODD, ODD}, // 1
+ {EVEN, EVEN, ODD, ODD, EVEN, ODD}, // 2
+ {EVEN, EVEN, ODD, ODD, ODD, EVEN}, // 3
+ {EVEN, ODD, EVEN, EVEN, ODD, ODD}, // 4
+ {EVEN, ODD, ODD, EVEN, EVEN, ODD}, // 5
+ {EVEN, ODD, ODD, ODD, EVEN, EVEN}, // 6
+ {EVEN, ODD, EVEN, ODD, EVEN, ODD}, // 7
+ {EVEN, ODD, EVEN, ODD, ODD, EVEN}, // 8
+ {EVEN, ODD, ODD, EVEN, ODD, EVEN} // 9
+ };
+
+ /** Creates new BarcodeEAN */
+ public BarcodeEAN() {
+ try {
+ x = 0.8f;
+ font = BaseFont.createFont("Helvetica", "winansi", false);
+ size = 8;
+ baseline = size;
+ barHeight = size * 3;
+ guardBars = true;
+ codeType = EAN13;
+ code = "";
+ }
+ catch (Exception e) {
+ throw new ExceptionConverter(e);
+ }
+ }
+
+ /** Calculates the EAN parity character.
+ * @param code the code
+ * @return the parity character
+ */
+ public static int calculateEANParity(String code) {
+ int mul = 3;
+ int total = 0;
+ for (int k = code.length() - 1; k >= 0; --k) {
+ int n = code.charAt(k) - '0';
+ total += mul * n;
+ mul ^= 2;
+ }
+ return (10 - (total % 10)) % 10;
+ }
+
+ /** Converts an UPCA code into an UPCE code. If the code can not
+ * be converted a <CODE>null</CODE> is returned.
+ * @param text the code to convert. It must have 12 numeric characters
+ * @return the 8 converted digits or <CODE>null</CODE> if the
+ * code could not be converted
+ */
+ static public String convertUPCAtoUPCE(String text) {
+ if (text.length() != 12 || !(text.startsWith("0") || text.startsWith("1")))
+ return null;
+ if (text.substring(3, 6).equals("000") || text.substring(3, 6).equals("100")
+ || text.substring(3, 6).equals("200")) {
+ if (text.substring(6, 8).equals("00"))
+ return text.substring(0, 1) + text.substring(1, 3) + text.substring(8, 11) + text.substring(3, 4) + text.substring(11);
+ }
+ else if (text.substring(4, 6).equals("00")) {
+ if (text.substring(6, 9).equals("000"))
+ return text.substring(0, 1) + text.substring(1, 4) + text.substring(9, 11) + "3" + text.substring(11);
+ }
+ else if (text.substring(5, 6).equals("0")) {
+ if (text.substring(6, 10).equals("0000"))
+ return text.substring(0, 1) + text.substring(1, 5) + text.substring(10, 11) + "4" + text.substring(11);
+ }
+ else if (text.charAt(10) >= '5') {
+ if (text.substring(6, 10).equals("0000"))
+ return text.substring(0, 1) + text.substring(1, 6) + text.substring(10, 11) + text.substring(11);
+ }
+ return null;
+ }
+
+ /** Creates the bars for the barcode EAN13 and UPCA.
+ * @param _code the text with 13 digits
+ * @return the barcode
+ */
+ public static byte[] getBarsEAN13(String _code) {
+ int code[] = new int[_code.length()];
+ for (int k = 0; k < code.length; ++k)
+ code[k] = _code.charAt(k) - '0';
+ byte bars[] = new byte[TOTALBARS_EAN13];
+ int pb = 0;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ byte sequence[] = PARITY13[code[0]];
+ for (int k = 0; k < sequence.length; ++k) {
+ int c = code[k + 1];
+ byte stripes[] = BARS[c];
+ if (sequence[k] == ODD) {
+ bars[pb++] = stripes[0];
+ bars[pb++] = stripes[1];
+ bars[pb++] = stripes[2];
+ bars[pb++] = stripes[3];
+ }
+ else {
+ bars[pb++] = stripes[3];
+ bars[pb++] = stripes[2];
+ bars[pb++] = stripes[1];
+ bars[pb++] = stripes[0];
+ }
+ }
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ for (int k = 7; k < 13; ++k) {
+ int c = code[k];
+ byte stripes[] = BARS[c];
+ bars[pb++] = stripes[0];
+ bars[pb++] = stripes[1];
+ bars[pb++] = stripes[2];
+ bars[pb++] = stripes[3];
+ }
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ return bars;
+ }
+
+ /** Creates the bars for the barcode EAN8.
+ * @param _code the text with 8 digits
+ * @return the barcode
+ */
+ public static byte[] getBarsEAN8(String _code) {
+ int code[] = new int[_code.length()];
+ for (int k = 0; k < code.length; ++k)
+ code[k] = _code.charAt(k) - '0';
+ byte bars[] = new byte[TOTALBARS_EAN8];
+ int pb = 0;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ for (int k = 0; k < 4; ++k) {
+ int c = code[k];
+ byte stripes[] = BARS[c];
+ bars[pb++] = stripes[0];
+ bars[pb++] = stripes[1];
+ bars[pb++] = stripes[2];
+ bars[pb++] = stripes[3];
+ }
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ for (int k = 4; k < 8; ++k) {
+ int c = code[k];
+ byte stripes[] = BARS[c];
+ bars[pb++] = stripes[0];
+ bars[pb++] = stripes[1];
+ bars[pb++] = stripes[2];
+ bars[pb++] = stripes[3];
+ }
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ return bars;
+ }
+
+ /** Creates the bars for the barcode UPCE.
+ * @param _code the text with 8 digits
+ * @return the barcode
+ */
+ public static byte[] getBarsUPCE(String _code) {
+ int code[] = new int[_code.length()];
+ for (int k = 0; k < code.length; ++k)
+ code[k] = _code.charAt(k) - '0';
+ byte bars[] = new byte[TOTALBARS_UPCE];
+ boolean flip = (code[0] != 0);
+ int pb = 0;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ byte sequence[] = PARITYE[code[code.length - 1]];
+ for (int k = 1; k < code.length - 1; ++k) {
+ int c = code[k];
+ byte stripes[] = BARS[c];
+ if (sequence[k - 1] == (flip ? EVEN : ODD)) {
+ bars[pb++] = stripes[0];
+ bars[pb++] = stripes[1];
+ bars[pb++] = stripes[2];
+ bars[pb++] = stripes[3];
+ }
+ else {
+ bars[pb++] = stripes[3];
+ bars[pb++] = stripes[2];
+ bars[pb++] = stripes[1];
+ bars[pb++] = stripes[0];
+ }
+ }
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ return bars;
+ }
+
+ /** Creates the bars for the barcode supplemental 2.
+ * @param _code the text with 2 digits
+ * @return the barcode
+ */
+ public static byte[] getBarsSupplemental2(String _code) {
+ int code[] = new int[2];
+ for (int k = 0; k < code.length; ++k)
+ code[k] = _code.charAt(k) - '0';
+ byte bars[] = new byte[TOTALBARS_SUPP2];
+ int pb = 0;
+ int parity = (code[0] * 10 + code[1]) % 4;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 2;
+ byte sequence[] = PARITY2[parity];
+ for (int k = 0; k < sequence.length; ++k) {
+ if (k == 1) {
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ }
+ int c = code[k];
+ byte stripes[] = BARS[c];
+ if (sequence[k] == ODD) {
+ bars[pb++] = stripes[0];
+ bars[pb++] = stripes[1];
+ bars[pb++] = stripes[2];
+ bars[pb++] = stripes[3];
+ }
+ else {
+ bars[pb++] = stripes[3];
+ bars[pb++] = stripes[2];
+ bars[pb++] = stripes[1];
+ bars[pb++] = stripes[0];
+ }
+ }
+ return bars;
+ }
+
+ /** Creates the bars for the barcode supplemental 5.
+ * @param _code the text with 5 digits
+ * @return the barcode
+ */
+ public static byte[] getBarsSupplemental5(String _code) {
+ int code[] = new int[5];
+ for (int k = 0; k < code.length; ++k)
+ code[k] = _code.charAt(k) - '0';
+ byte bars[] = new byte[TOTALBARS_SUPP5];
+ int pb = 0;
+ int parity = (((code[0] + code[2] + code[4]) * 3) + ((code[1] + code[3]) * 9)) % 10;
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ bars[pb++] = 2;
+ byte sequence[] = PARITY5[parity];
+ for (int k = 0; k < sequence.length; ++k) {
+ if (k != 0) {
+ bars[pb++] = 1;
+ bars[pb++] = 1;
+ }
+ int c = code[k];
+ byte stripes[] = BARS[c];
+ if (sequence[k] == ODD) {
+ bars[pb++] = stripes[0];
+ bars[pb++] = stripes[1];
+ bars[pb++] = stripes[2];
+ bars[pb++] = stripes[3];
+ }
+ else {
+ bars[pb++] = stripes[3];
+ bars[pb++] = stripes[2];
+ bars[pb++] = stripes[1];
+ bars[pb++] = stripes[0];
+ }
+ }
+ 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 = 0;
+ float height = barHeight;
+ if (font != null) {
+ if (baseline <= 0)
+ height += -baseline + size;
+ else
+ height += baseline - font.getFontDescriptor(BaseFont.DESCENT, size);
+ }
+ switch (codeType) {
+ case EAN13:
+ width = x * (11 + 12 * 7);
+ if (font != null) {
+ width += font.getWidthPoint(code.charAt(0), size);
+ }
+ break;
+ case EAN8:
+ width = x * (11 + 8 * 7);
+ break;
+ case UPCA:
+ width = x * (11 + 12 * 7);
+ if (font != null) {
+ width += font.getWidthPoint(code.charAt(0), size) + font.getWidthPoint(code.charAt(11), size);
+ }
+ break;
+ case UPCE:
+ width = x * (9 + 6 * 7);
+ if (font != null) {
+ width += font.getWidthPoint(code.charAt(0), size) + font.getWidthPoint(code.charAt(7), size);
+ }
+ break;
+ case SUPP2:
+ width = x * (6 + 2 * 7);
+ break;
+ case SUPP5:
+ width = x * (4 + 5 * 7 + 4 * 2);
+ break;
+ default:
+ throw new RuntimeException("Invalid code type.");
+ }
+ return new Rectangle(width, height);
+ }
+
+ /** 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) {
+ Rectangle rect = getBarcodeSize();
+ float barStartX = 0;
+ float barStartY = 0;
+ float textStartY = 0;
+ if (font != null) {
+ if (baseline <= 0)
+ textStartY = barHeight - baseline;
+ else {
+ textStartY = -font.getFontDescriptor(BaseFont.DESCENT, size);
+ barStartY = textStartY + baseline;
+ }
+ }
+ switch (codeType) {
+ case EAN13:
+ case UPCA:
+ case UPCE:
+ if (font != null)
+ barStartX += font.getWidthPoint(code.charAt(0), size);
+ break;
+ }
+ byte bars[] = null;
+ int guard[] = GUARD_EMPTY;
+ switch (codeType) {
+ case EAN13:
+ bars = getBarsEAN13(code);
+ guard = GUARD_EAN13;
+ break;
+ case EAN8:
+ bars = getBarsEAN8(code);
+ guard = GUARD_EAN8;
+ break;
+ case UPCA:
+ bars = getBarsEAN13("0" + code);
+ guard = GUARD_UPCA;
+ break;
+ case UPCE:
+ bars = getBarsUPCE(code);
+ guard = GUARD_UPCE;
+ break;
+ case SUPP2:
+ bars = getBarsSupplemental2(code);
+ break;
+ case SUPP5:
+ bars = getBarsSupplemental5(code);
+ break;
+ }
+ float keepBarX = barStartX;
+ boolean print = true;
+ float gd = 0;
+ if (font != null && baseline > 0 && guardBars) {
+ gd = baseline / 2;
+ }
+ if (barColor != null)
+ cb.setColorFill(barColor);
+ for (int k = 0; k < bars.length; ++k) {
+ float w = bars[k] * x;
+ if (print) {
+ if (Arrays.binarySearch(guard, k) >= 0)
+ cb.rectangle(barStartX, barStartY - gd, w - inkSpreading, barHeight + gd);
+ else
+ cb.rectangle(barStartX, barStartY, w - inkSpreading, barHeight);
+ }
+ print = !print;
+ barStartX += w;
+ }
+ cb.fill();
+ if (font != null) {
+ if (textColor != null)
+ cb.setColorFill(textColor);
+ cb.beginText();
+ cb.setFontAndSize(font, size);
+ switch (codeType) {
+ case EAN13:
+ cb.setTextMatrix(0, textStartY);
+ cb.showText(code.substring(0, 1));
+ for (int k = 1; k < 13; ++k) {
+ String c = code.substring(k, k + 1);
+ float len = font.getWidthPoint(c, size);
+ float pX = keepBarX + TEXTPOS_EAN13[k - 1] * x - len / 2;
+ cb.setTextMatrix(pX, textStartY);
+ cb.showText(c);
+ }
+ break;
+ case EAN8:
+ for (int k = 0; k < 8; ++k) {
+ String c = code.substring(k, k + 1);
+ float len = font.getWidthPoint(c, size);
+ float pX = TEXTPOS_EAN8[k] * x - len / 2;
+ cb.setTextMatrix(pX, textStartY);
+ cb.showText(c);
+ }
+ break;
+ case UPCA:
+ cb.setTextMatrix(0, textStartY);
+ cb.showText(code.substring(0, 1));
+ for (int k = 1; k < 11; ++k) {
+ String c = code.substring(k, k + 1);
+ float len = font.getWidthPoint(c, size);
+ float pX = keepBarX + TEXTPOS_EAN13[k] * x - len / 2;
+ cb.setTextMatrix(pX, textStartY);
+ cb.showText(c);
+ }
+ cb.setTextMatrix(keepBarX + x * (11 + 12 * 7), textStartY);
+ cb.showText(code.substring(11, 12));
+ break;
+ case UPCE:
+ cb.setTextMatrix(0, textStartY);
+ cb.showText(code.substring(0, 1));
+ for (int k = 1; k < 7; ++k) {
+ String c = code.substring(k, k + 1);
+ float len = font.getWidthPoint(c, size);
+ float pX = keepBarX + TEXTPOS_EAN13[k - 1] * x - len / 2;
+ cb.setTextMatrix(pX, textStartY);
+ cb.showText(c);
+ }
+ cb.setTextMatrix(keepBarX + x * (9 + 6 * 7), textStartY);
+ cb.showText(code.substring(7, 8));
+ break;
+ case SUPP2:
+ case SUPP5:
+ for (int k = 0; k < code.length(); ++k) {
+ String c = code.substring(k, k + 1);
+ float len = font.getWidthPoint(c, size);
+ float pX = (7.5f + (9 * k)) * x - len / 2;
+ cb.setTextMatrix(pX, textStartY);
+ cb.showText(c);
+ }
+ break;
+ }
+ cb.endText();
+ }
+ return rect;
+ }
+
+ /** 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 width = 0;
+ byte bars[] = null;
+ switch (codeType) {
+ case EAN13:
+ bars = getBarsEAN13(code);
+ width = 11 + 12 * 7;
+ break;
+ case EAN8:
+ bars = getBarsEAN8(code);
+ width = 11 + 8 * 7;
+ break;
+ case UPCA:
+ bars = getBarsEAN13("0" + code);
+ width = 11 + 12 * 7;
+ break;
+ case UPCE:
+ bars = getBarsUPCE(code);
+ width = 9 + 6 * 7;
+ break;
+ case SUPP2:
+ bars = getBarsSupplemental2(code);
+ width = 6 + 2 * 7;
+ break;
+ case SUPP5:
+ bars = getBarsSupplemental5(code);
+ width = 4 + 5 * 7 + 4 * 2;
+ break;
+ default:
+ throw new RuntimeException("Invalid code type.");
+ }
+
+ boolean print = true;
+ int ptr = 0;
+ int height = (int)barHeight;
+ int pix[] = new int[width * height];
+ for (int k = 0; k < bars.length; ++k) {
+ int w = bars[k];
+ int c = g;
+ if (print)
+ c = f;
+ print = !print;
+ for (int j = 0; j < w; ++j)
+ pix[ptr++] = c;
+ }
+ for (int k = width; k < pix.length; k += width) {
+ System.arraycopy(pix, 0, pix, k, width);
+ }
+ Image img = canvas.createImage(new MemoryImageSource(width, height, pix, 0, width));
+
+ return img;
+ }
+}
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