77 lines
2.7 KiB
Java
Executable File
77 lines
2.7 KiB
Java
Executable File
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package qz.printer.rendering;
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import java.io.IOException;
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import java.util.List;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.pdfbox.contentstream.operator.OperatorProcessor;
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import org.apache.pdfbox.cos.COSBase;
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import org.apache.pdfbox.cos.COSName;
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import org.apache.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState;
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import org.apache.pdfbox.contentstream.operator.Operator;
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import org.apache.pdfbox.contentstream.operator.OperatorName;
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import org.apache.pdfbox.contentstream.PDFStreamEngine;
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import org.apache.pdfbox.contentstream.operator.MissingOperandException;
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/**
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* gs: Set parameters from graphics state parameter dictionary.
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*
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* @author Ben Litchfield
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*/
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public class OpaqueGraphicStateParameters extends OperatorProcessor
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{
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private static final Log LOG = LogFactory.getLog(OpaqueGraphicStateParameters.class);
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@Override
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public void process(Operator operator, List<COSBase> arguments) throws IOException
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{
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if (arguments.isEmpty())
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{
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throw new MissingOperandException(operator, arguments);
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}
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COSBase base0 = arguments.get(0);
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if (!(base0 instanceof COSName))
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{
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return;
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}
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// set parameters from graphics state parameter dictionary
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COSName graphicsName = (COSName) base0;
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PDFStreamEngine context = getContext();
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PDExtendedGraphicsState gs = context.getResources().getExtGState(graphicsName);
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if (gs == null)
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{
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LOG.error("name for 'gs' operator not found in resources: /" + graphicsName.getName());
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return;
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}
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// PDFBOX-5605: Disable alpha for lines, etc
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gs.setNonStrokingAlphaConstant(1f);
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gs.setStrokingAlphaConstant(1f);
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gs.copyIntoGraphicsState( context.getGraphicsState() );
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}
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@Override
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public String getName()
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{
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return OperatorName.SET_GRAPHICS_STATE_PARAMS;
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}
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} |