setstrokingcmykcolor.java

非常有用的操作pdf文件的java源码

/**
 * Copyright (c) 2005, www.pdfbox.org
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package org.pdfbox.util.operator;

import java.util.List;

import org.pdfbox.cos.COSNumber;
import org.pdfbox.pdmodel.graphics.color.PDColorSpace;
import org.pdfbox.pdmodel.graphics.color.PDColorSpaceInstance;
import org.pdfbox.pdmodel.graphics.color.PDDeviceCMYK;
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 <a href="mailto:[e-mail]">Ben Litchfield</a>
 * @version $Revision: 1.3 $
 */
public class SetStrokingCMYKColor extends OperatorProcessor 
{
    /**
     * CS Set color space for stroking operations.
     * @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
    {
        PDColorSpace cs = PDDeviceCMYK.INSTANCE;
        PDColorSpaceInstance colorInstance = context.getGraphicsState().getStrokingColorSpace();
        colorInstance.setColorSpace( cs );
        float[] values = new float[4];
        for( int i=0; i<arguments.size(); i++ )
        {
            values[i] = ((COSNumber)arguments.get( i )).floatValue();
        }
        colorInstance.setColorSpaceValue( values );
    }
}