| /* |
| * 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.io.IOException; |
| import java.io.OutputStream; |
| import java.io.Writer; |
| import java.util.Collection; |
| import java.util.List; |
| |
| import org.apache.commons.io.output.CountingOutputStream; |
| |
| /** |
| * Class representing an array object. |
| */ |
| public class PDFArray extends PDFObject { |
| /** |
| * List holding the values of this array |
| */ |
| protected List values = new java.util.ArrayList(); |
| |
| /** |
| * Create a new, empty array object |
| * @param parent the array's parent if any |
| */ |
| public PDFArray(PDFObject parent) { |
| /* generic creation of PDF object */ |
| super(parent); |
| } |
| |
| /** |
| * Create a new, empty array object with no parent. |
| */ |
| public PDFArray() { |
| this(null); |
| } |
| |
| /** |
| * Create an array object. |
| * @param parent the array's parent if any |
| * @param values the actual array wrapped by this object |
| */ |
| public PDFArray(PDFObject parent, int[] values) { |
| /* generic creation of PDF object */ |
| super(parent); |
| |
| for (int i = 0, c = values.length; i < c; i++) { |
| this.values.add(new Integer(values[i])); |
| } |
| } |
| |
| /** |
| * Create an array object. |
| * @param parent the array's parent if any |
| * @param values the actual array wrapped by this object |
| */ |
| public PDFArray(PDFObject parent, double[] values) { |
| /* generic creation of PDF object */ |
| super(parent); |
| |
| for (int i = 0, c = values.length; i < c; i++) { |
| this.values.add(new Double(values[i])); |
| } |
| } |
| |
| /** |
| * Create an array object. |
| * @param parent the array's parent if any |
| * @param values the actual values wrapped by this object |
| */ |
| public PDFArray(PDFObject parent, Collection values) { |
| /* generic creation of PDF object */ |
| super(parent); |
| |
| this.values.addAll(values); |
| } |
| |
| /** |
| * Create the array object |
| * @param parent the array's parent if any |
| * @param values the actual array wrapped by this object |
| */ |
| public PDFArray(PDFObject parent, Object[] values) { |
| /* generic creation of PDF object */ |
| super(parent); |
| |
| for (int i = 0, c = values.length; i < c; i++) { |
| this.values.add(values[i]); |
| } |
| } |
| |
| /** |
| * Returns the length of the array |
| * @return the length of the array |
| */ |
| public int length() { |
| return this.values.size(); |
| } |
| |
| /** |
| * Sets an entry at a given location. |
| * @param index the index of the value to set |
| * @param obj the new value |
| */ |
| public void set(int index, Object obj) { |
| this.values.set(index, obj); |
| } |
| |
| /** |
| * Sets an entry at a given location. |
| * @param index the index of the value to set |
| * @param value the new value |
| */ |
| public void set(int index, double value) { |
| this.values.set(index, new Double(value)); |
| } |
| |
| /** |
| * Gets an entry at a given location. |
| * @param index the index of the value to set |
| * @return the requested value |
| */ |
| public Object get(int index) { |
| return this.values.get(index); |
| } |
| |
| /** |
| * Adds a new value to the array. |
| * @param obj the value |
| */ |
| public void add(Object obj) { |
| if (obj instanceof PDFObject) { |
| PDFObject pdfObj = (PDFObject)obj; |
| if (!pdfObj.hasObjectNumber()) { |
| pdfObj.setParent(this); |
| } |
| } |
| this.values.add(obj); |
| } |
| |
| /** |
| * Adds a new value to the array. |
| * @param value the value |
| */ |
| public void add(double value) { |
| this.values.add(new Double(value)); |
| } |
| |
| /** {@inheritDoc} */ |
| protected int output(OutputStream stream) throws IOException { |
| CountingOutputStream cout = new CountingOutputStream(stream); |
| Writer writer = PDFDocument.getWriterFor(cout); |
| if (hasObjectNumber()) { |
| writer.write(getObjectID()); |
| } |
| |
| writer.write('['); |
| for (int i = 0; i < values.size(); i++) { |
| if (i > 0) { |
| writer.write(' '); |
| } |
| Object obj = this.values.get(i); |
| formatObject(obj, cout, writer); |
| } |
| writer.write(']'); |
| |
| if (hasObjectNumber()) { |
| writer.write("\nendobj\n"); |
| } |
| |
| writer.flush(); |
| return cout.getCount(); |
| } |
| |
| } |