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The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.

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/**
 * Copyright (C) 2011-2015 The XDocReport Team 
 *
 * All rights reserved.
 *
 * Permission is hereby granted, free  of charge, to any person obtaining
 * a  copy  of this  software  and  associated  documentation files  (the
 * "Software"), to  deal in  the Software without  restriction, including
 * without limitation  the rights to  use, copy, modify,  merge, publish,
 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
 * permit persons to whom the Software  is furnished to do so, subject to
 * the following conditions:
 *
 * The  above  copyright  notice  and  this permission  notice  shall  be
 * included in all copies or substantial portions of the Software.
 *
 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package fr.opensagres.poi.xwpf.converter.pdf.internal.elements;

import java.math.BigInteger;

import com.lowagie.text.Table;
import com.lowagie.text.pdf.PdfContentByte;

import fr.opensagres.poi.xwpf.converter.core.utils.DxaUtil;
import fr.opensagres.xdocreport.itext.extension.IMasterPageHeaderFooter;

/**
 * fixes for pdf conversion by Leszek Piotrowicz 
 */
public class StylableHeaderFooter
    extends StylableTable
    implements IMasterPageHeaderFooter
{

    private final StylableDocument ownerDocument;

    private final boolean header;

    private StylableTableCell tableCell;

    private boolean flushed;

    private final Float y;

    private Float totalHeight;

    public StylableHeaderFooter( StylableDocument ownerDocument, BigInteger dxaY, boolean header )
    {
        super( ownerDocument, null, 1 );
        this.ownerDocument = ownerDocument;
        this.header = header;
        tableCell = ownerDocument.createTableCell( this );
        tableCell.setBorder( Table.NO_BORDER );
        // set padding to zero for proper alignment
        //tableCell.setPadding( 0.0f );
        this.y = dxaY != null ? DxaUtil.dxa2points( dxaY ) : null;
        this.totalHeight = null;
    }

    public StylableTableCell getTableCell()
    {
        return tableCell;
    }

    private void setWidthIfNecessary()
    {
        // compute width as page width - margins
        float headerFooterWidth = ownerDocument.right() - ownerDocument.left();
        if ( getTotalWidth() != headerFooterWidth )
        {
            setTotalWidth( headerFooterWidth );
        }
    }

    public float getTotalHeight()
    {
        if ( totalHeight == null )
        {
            totalHeight = computeTotalHeight();
        }
        return totalHeight;
    }

    private float computeTotalHeight()
    {
        setWidthIfNecessary();
        float height = super.getRowHeight( 0 );
        if ( y != null )
        {
            return height + y;
        }
        return height;
    }

    public void flush()
    {
        if ( flushed )
        {
            return;
        }
        super.addCell( tableCell );
        flushed = true;
    }

    @Override
    public float writeSelectedRows( int rowStart, int rowEnd, float xPos, float yPos, PdfContentByte canvas )
    {
        setWidthIfNecessary();
        return super.writeSelectedRows( rowStart, rowEnd, xPos, yPos, canvas );
    }

    public Float getY()
    {
        return y;
    }
}