/* * 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 org.apache.pdfbox.cos.COSBase; import org.apache.pdfbox.cos.COSName; import org.apache.pdfbox.cos.COSStream; import org.apache.pdfbox.pdmodel.PDPage; import org.apache.pdfbox.pdmodel.PDResources; import org.apache.pdfbox.pdmodel.graphics.xobject.PDXObject; import org.apache.pdfbox.pdmodel.graphics.xobject.PDXObjectForm; import org.apache.pdfbox.util.PDFMarkedContentExtractor; import org.apache.pdfbox.util.PDFOperator; import java.io.IOException; import java.util.List; import java.util.Map; /** * Invoke named XObject. * * @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a> * @author Mario Ivankovits * * @version $Revision: 1.9 $ */ public class Invoke extends OperatorProcessor { //private Set inProcess = new TreeSet(); /** * process : Do - Invoke a named xobject. * @param operator The operator that is being executed. * @param arguments List * * @throws IOException If there is an error processing this operator. */ public void process(PDFOperator operator, List<COSBase> arguments) throws IOException { COSName name = (COSName) arguments.get( 0 ); Map xobjects = context.getXObjects(); PDXObject xobject = (PDXObject) xobjects.get(name.getName()); if (this.context instanceof PDFMarkedContentExtractor) { ((PDFMarkedContentExtractor) this.context).xobject(xobject); } if(xobject instanceof PDXObjectForm) { PDXObjectForm form = (PDXObjectForm)xobject; COSStream invoke = (COSStream)form.getCOSObject(); PDResources pdResources = form.getResources(); PDPage page = context.getCurrentPage(); if(pdResources == null) { pdResources = page.findResources(); } getContext().processSubStream( page, pdResources, invoke ); } } }