Dépôt officiel du code source de l'ERP OpenConcerto

/*

 * Copyright 2014 Robin Stuart

 *

 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software distributed under the License

 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express

 * or implied. See the License for the specific language governing permissions and limitations under

 * the License.

 */

package uk.org.okapibarcode.backend;

import static uk.org.okapibarcode.backend.HumanReadableLocation.NONE;

import static uk.org.okapibarcode.backend.HumanReadableLocation.TOP;

import java.awt.geom.Rectangle2D;

/**

 * <p>

 * Implements <a href="http://en.wikipedia.org/wiki/POSTNET">POSTNET</a> and

 * <a href="http://en.wikipedia.org/wiki/Postal_Alpha_Numeric_Encoding_Technique">PLANET</a> bar

 * code symbologies.

 *

 * <p>

 * POSTNET and PLANET both use numerical input data and include a modulo-10 check digit.

 *

 * @author <a href="mailto:rstuart114@gmail.com">Robin Stuart</a>

 */

public class Postnet extends Symbol {

    public static enum Mode {

        PLANET, POSTNET

    };

    private static final String[] PN_TABLE = { "LLSSS", "SSSLL", "SSLSL", "SSLLS", "SLSSL", "SLSLS", "SLLSS", "LSSSL", "LSSLS", "LSLSS" };

    private static final String[] PL_TABLE = { "SSLLL", "LLLSS", "LLSLS", "LLSSL", "LSLLS", "LSLSL", "LSSLL", "SLLLS", "SLLSL", "SLSLL" };

    private Mode mode;

    public Postnet() {

        this.mode = Mode.POSTNET;

        this.default_height = 12;

        this.humanReadableLocation = HumanReadableLocation.NONE;

    }

    /**

     * Sets the barcode mode (PLANET or POSTNET). The default mode is POSTNET.

     *

     * @param mode the barcode mode (PLANET or POSTNET)

     */

    public void setMode(final Mode mode) {

        this.mode = mode;

    }

    /**

     * Returns the barcode mode (PLANET or POSTNET). The default mode is POSTNET.

     *

     * @return the barcode mode (PLANET or POSTNET)

     */

    public Mode getMode() {

        return this.mode;

    }

    @Override

    protected void encode() {

        final String[] table = this.mode == Mode.POSTNET ? PN_TABLE : PL_TABLE;

        encode(table);

    }

    private void encode(final String[] table) {

        int i, sum, check_digit;

        String dest;

        if (this.content.length() > 38) {

            throw new OkapiException("Input too long");

        }

        if (!this.content.matches("[0-9]+")) {

            throw new OkapiException("Invalid characters in data");

        }

        sum = 0;

        dest = "L";

        for (i = 0; i < this.content.length(); i++) {

            dest += table[this.content.charAt(i) - '0'];

            sum += this.content.charAt(i) - '0';

        }

        check_digit = (10 - sum % 10) % 10;

        infoLine("Check Digit: " + check_digit);

        dest += table[check_digit];

        dest += "L";

        infoLine("Encoding: " + dest);

        this.readable = this.content;

        this.pattern = new String[] { dest };

        this.row_count = 1;

        this.row_height = new int[] { -1 };

    }

    @Override

    protected void plotSymbol() {

        int xBlock, shortHeight;

        double x, y, w, h;

        this.rectangles.clear();

        this.texts.clear();

        int baseY;

        if (this.humanReadableLocation == TOP) {

            baseY = getTheoreticalHumanReadableHeight();

        } else {

            baseY = 0;

        }

        x = 0;

        w = this.moduleWidth;

        shortHeight = (int) (0.4 * this.default_height);

        for (xBlock = 0; xBlock < this.pattern[0].length(); xBlock++) {

            if (this.pattern[0].charAt(xBlock) == 'L') {

                y = baseY;

                h = this.default_height;

            } else {

                y = baseY + this.default_height - shortHeight;

                h = shortHeight;

            }

            this.rectangles.add(new Rectangle2D.Double(x, y, w, h));

            x += 2.5 * w;

        }

        this.symbol_width = (int) Math.ceil((this.pattern[0].length() - 1) * 2.5 * w + w); // final

                                                                                           // bar

                                                                                           // doesn't

                                                                                           // need

                                                                                           // extra

                                                                                           // whitespace

        this.symbol_height = this.default_height;

        if (this.humanReadableLocation != NONE && !this.readable.isEmpty()) {

            double baseline;

            if (this.humanReadableLocation == TOP) {

                baseline = this.fontSize;

            } else {

                baseline = this.symbol_height + this.fontSize;

            }

            this.texts.add(new TextBox(0, baseline, this.symbol_width, this.readable, this.humanReadableAlignment));

        }

    }

}