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- /*
- * 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.
- */
-
- /* $Id$ */
-
- package org.apache.fop.pdf;
-
- import java.util.LinkedHashSet;
- import java.util.Set;
-
- /**
- * The PDF resource context.
- *
- * There is one of these for every page in a PDF document. The object
- * specifies the dimensions of the page and references a /Resources
- * object, a contents stream and the page's parent in the page
- * hierarchy.
- *
- * Modified by Mark Lillywhite, mark-fop@inomial.com. The Parent
- * object was being referred to by reference, but all that we
- * ever used from the Parent was its PDF object ID, and according
- * to the memory profile this was causing OOM issues. So, we store
- * only the object ID of the parent, rather than the parent itself.
- */
- public class PDFResourceContext extends PDFDictionary {
- private Set<PDFXObject> xObjects = new LinkedHashSet<PDFXObject>();
- private Set<PDFPattern> patterns = new LinkedHashSet<PDFPattern>();
- private Set<PDFShading> shadings = new LinkedHashSet<PDFShading>();
- private Set<PDFGState> gstates = new LinkedHashSet<PDFGState>();
-
- /**
- * Creates a new ResourceContext.
- * @param resources the /Resources object
- */
- public PDFResourceContext(PDFResources resources) {
- /* generic creation of object */
- super();
-
- /* set fields using parameters */
- put("Resources", resources);
-
- resources.addContext(this);
- }
-
- public void addXObject(PDFXObject xObject) {
- xObjects.add(xObject);
- }
-
- public Set<PDFXObject> getXObjects() {
- return xObjects;
- }
-
- /**
- * Get the resources for this resource context.
- *
- * @return the resources in this resource context
- */
- public PDFResources getPDFResources() {
- return (PDFResources)get("Resources");
- }
-
- /**
- * set this page's annotation list
- *
- * @param annot a PDFAnnotList list of annotations
- */
- public void addAnnotation(PDFObject annot) {
- PDFAnnotList annotList = getAnnotations();
- if (annotList == null) {
- annotList = getDocument().getFactory().makeAnnotList();
- put("Annots", annotList);
- }
- annotList.addAnnot(annot);
- }
-
- /**
- * Get the current annotations.
- *
- * @return the current annotation list
- */
- public PDFAnnotList getAnnotations() {
- return (PDFAnnotList)get("Annots");
- }
-
- /**
- * A a GState to this resource context.
- *
- * @param gstate the GState to add
- */
- public void addGState(PDFGState gstate) {
- gstates.add(gstate);
- }
-
- public Set<PDFGState> getGStates() {
- return gstates;
- }
-
- /**
- * Add the shading to the current resource context.
- *
- * @param shading the shading to add
- */
- public void addShading(PDFShading shading) {
- shadings.add(shading);
- }
-
- public Set<PDFShading> getShadings() {
- return shadings;
- }
-
- public Set<PDFPattern> getPatterns() {
- return patterns;
- }
-
- public void addPattern(PDFPattern pattern) {
- patterns.add(pattern);
- }
- }
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