/**
 * Copyright (c) 2004, www.pdfbox.org
 * All rights reserved.
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 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. Neither the name of pdfbox; nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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package org.pdfbox.util.operator;

import java.util.List;
import org.apache.log4j.Logger;
import org.pdfbox.cos.COSNumber;
import org.pdfbox.util.PDFOperator;

import java.io.IOException;

/**
 * <p>Structal modification of the PDFEngine class :
 * the long sequence of conditions in processOperator is remplaced by
 * this strategy pattern.</p>
 * 
 * @author Ben Litchfield (ben@csh.rit.edu)
 * @version $Revision: 1.3 $
 */

public class SetHorizontalTextScaling extends OperatorProcessor 
{
    private static final Logger LOG = Logger.getLogger(SetTextFont.class);

    /**
     * Tz Set horizontal text scaling.
     * @param operator The operator that is being executed.
     * @param arguments List
     * @throws IOException If an error occurs while processing the font.
     */
    public void process(PDFOperator operator, List arguments) throws IOException
    {
        COSNumber scaling = (COSNumber)arguments.get(0);
        context.getGraphicsState().getTextState().setHorizontalScalingPercent( scaling.floatValue() );
    }
}