/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.pdfbox.util.operator;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import org.apache.pdfbox.cos.COSArray;
import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.pdmodel.graphics.pattern.PDPatternResources;
import org.apache.pdfbox.util.PDFOperator;
/**
* <p>Set the stroking pattern.</p>
*
* @version $Revision: 1.0 $
*/
public class SetStrokingPattern extends OperatorProcessor
{
/**
* Set pattern instead of a 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 pattern.
*/
public void process(PDFOperator operator, List<COSBase> arguments) throws IOException
{
COSName selectedPattern;
int numberOfArguments = arguments.size();
COSArray colorValues;
if (numberOfArguments == 1)
{
selectedPattern = (COSName)arguments.get(0);
}
else
{
// uncolored tiling patterns shall have some additional color values
// TODO: pass these values to the colorstate
colorValues = new COSArray();
for (int i=0;i<numberOfArguments-1;i++)
{
colorValues.add(arguments.get(i));
}
selectedPattern = (COSName)arguments.get(numberOfArguments-1);
}
Map<String,PDPatternResources> patterns = getContext().getResources().getPatterns();
PDPatternResources pattern = patterns.get(selectedPattern.getName());
getContext().getGraphicsState().getStrokingColor().setPattern(pattern);
}
}