| /* |
| * 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; |
| |
| /** |
| * Class representing a PDF /ParentTree. |
| */ |
| public class PDFParentTree extends PDFNumberTreeNode { |
| |
| private static final int MAX_NUMS_ARRAY_SIZE = 50; |
| |
| public PDFParentTree() { |
| put("Kids", new PDFArray()); |
| } |
| |
| @Override |
| public void addToNums(int num, Object object) { |
| int arrayIndex = num / MAX_NUMS_ARRAY_SIZE; |
| setNumOfKidsArrays(arrayIndex + 1); |
| insertItemToNumsArray(arrayIndex, num, object); |
| } |
| |
| private void setNumOfKidsArrays(int numKids) { |
| for (int i = getKids().length(); i < numKids; i++) { |
| PDFNumberTreeNode newArray = new PDFNumberTreeNode(); |
| newArray.setNums(new PDFNumsArray(newArray)); |
| newArray.setLowerLimit(i * MAX_NUMS_ARRAY_SIZE); |
| newArray.setUpperLimit(i * MAX_NUMS_ARRAY_SIZE); |
| addKid(newArray); |
| } |
| } |
| |
| /** |
| * Registers a child object and adds it to the Kids array. |
| * @param kid The child PDF object to be added |
| */ |
| private void addKid(PDFObject kid) { |
| assert getDocument() != null; |
| getDocument().assignObjectNumber(kid); |
| getDocument().addTrailerObject(kid); |
| ((PDFArray) get("Kids")).add(kid); |
| } |
| |
| private void insertItemToNumsArray(int array, int num, Object object) { |
| assert getKids().get(array) instanceof PDFNumberTreeNode; |
| PDFNumberTreeNode numsArray = (PDFNumberTreeNode) getKids().get(array); |
| numsArray.addToNums(num, object); |
| } |
| } |
| |
| |
| |
| |