/*********************************************************************
 *
 *      Copyright (C) 2002 Andrew Khan
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ***************************************************************************/

package jxl.read.biff;

import jxl.biff.DoubleHelper;
import jxl.biff.RecordData;
import jxl.biff.Type;

/**
 * Abstract class containing the margin value for top,left,right and bottom
 * margins
 */
abstract class MarginRecord extends RecordData {
    /**
     * The size of the margin
     */
    private final double margin;

    /**
     * Constructs this record from the raw data
     *
     * @param t the type
     * @param r the record
     */
    protected MarginRecord(Type t, Record r) {
        super(t);

        byte[] data = r.getData();

        margin = DoubleHelper.getIEEEDouble(data, 0);
    }

    /**
     * Accessor for the margin
     *
     * @return the margin
     */
    double getMargin() {
        return margin;
    }
}
