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iTechSharp/iTextSharp/text/pdf/PdfArray.cs
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iTechSharp/iTextSharp/text/pdf/PdfArray.cs
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using System;
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using System.IO;
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using System.Collections;
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using System.util;
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/*
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* $Id: PdfArray.cs,v 1.7 2008/05/13 11:25:18 psoares33 Exp $
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*
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*
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* Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* (the "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the License.
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*
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* The Original Code is 'iText, a free JAVA-PDF library'.
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*
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* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
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* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
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* All Rights Reserved.
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* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
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* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
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*
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* Contributor(s): all the names of the contributors are added in the source code
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* where applicable.
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*
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* Alternatively, the contents of this file may be used under the terms of the
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* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
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* provisions of LGPL are applicable instead of those above. If you wish to
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* allow use of your version of this file only under the terms of the LGPL
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* License and not to allow others to use your version of this file under
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* the MPL, indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by the LGPL.
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* If you do not delete the provisions above, a recipient may use your version
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* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the MPL as stated above or under the terms of the GNU
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* Library General Public License as published by the Free Software Foundation;
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* either version 2 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
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* details.
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*
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* If you didn't download this code from the following link, you should check if
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* you aren't using an obsolete version:
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* http://www.lowagie.com/iText/
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*/
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namespace iTextSharp.text.pdf {
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/**
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* <CODE>PdfArray</CODE> is the PDF Array object.
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* <P>
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* An array is a sequence of PDF objects. An array may contain a mixture of object types.
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* An array is written as a left square bracket ([), followed by a sequence of objects,
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* followed by a right square bracket (]).<BR>
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* This object is described in the 'Portable Document Format Reference Manual version 1.3'
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* section 4.6 (page 40).
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*
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* @see PdfObject
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*/
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public class PdfArray : PdfObject {
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// membervariables
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/** this is the actual array of PdfObjects */
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protected ArrayList arrayList;
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// constructors
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/**
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* Constructs an empty <CODE>PdfArray</CODE>-object.
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*/
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public PdfArray() : base(ARRAY) {
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arrayList = new ArrayList();
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}
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/**
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* Constructs an <CODE>PdfArray</CODE>-object, containing 1 <CODE>PdfObject</CODE>.
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*
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* @param object a <CODE>PdfObject</CODE> that has to be added to the array
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*/
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public PdfArray(PdfObject obj) : base(ARRAY) {
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arrayList = new ArrayList();
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arrayList.Add(obj);
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}
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public PdfArray(float[] values) : base(ARRAY) {
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arrayList = new ArrayList();
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Add(values);
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}
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public PdfArray(int[] values) : base(ARRAY) {
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arrayList = new ArrayList();
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Add(values);
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}
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/**
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* Constructs an <CODE>PdfArray</CODE>-object, containing all the <CODE>PdfObject</CODE>s in a given <CODE>PdfArray</CODE>.
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*
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* @param array a <CODE>PdfArray</CODE> that has to be added to the array
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*/
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public PdfArray(PdfArray array) : base(ARRAY) {
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arrayList = new ArrayList(array.ArrayList);
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}
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// methods overriding some methods in PdfObject
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/**
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* Returns the PDF representation of this <CODE>PdfArray</CODE>.
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*
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* @return an array of <CODE>byte</CODE>s
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*/
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public override void ToPdf(PdfWriter writer, Stream os) {
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os.WriteByte((byte)'[');
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bool first = true;
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PdfObject obj = null;
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foreach (PdfObject obja in arrayList) {
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obj = (obja == null) ? PdfNull.PDFNULL : obja;
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type = obj.Type;
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if (!first && type != PdfObject.ARRAY && type != PdfObject.DICTIONARY && type != PdfObject.NAME && type != PdfObject.STRING)
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os.WriteByte((byte)' ');
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first = false;
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obj.ToPdf(writer, os);
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}
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os.WriteByte((byte)']');
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}
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// methods concerning the ArrayList-membervalue
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/**
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* Returns an ArrayList containing <CODE>PdfObject</CODE>s.
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*
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* @return an ArrayList
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*/
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public ArrayList ArrayList {
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get {
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return arrayList;
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}
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}
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/**
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* Returns the number of entries in the array.
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*
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* @return the size of the ArrayList
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*/
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public int Size {
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get {
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return arrayList.Count;
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}
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}
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/**
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* Adds a <CODE>PdfObject</CODE> to the <CODE>PdfArray</CODE>.
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*
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* @param object <CODE>PdfObject</CODE> to add
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* @return <CODE>true</CODE>
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*/
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public virtual bool Add(PdfObject obj) {
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arrayList.Add(obj);
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return true;
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}
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public bool Add(float[] values) {
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for (int k = 0; k < values.Length; ++k)
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arrayList.Add(new PdfNumber(values[k]));
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return true;
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}
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public bool Add(int[] values) {
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for (int k = 0; k < values.Length; ++k)
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arrayList.Add(new PdfNumber(values[k]));
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return true;
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}
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/**
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* Adds a <CODE>PdfObject</CODE> to the <CODE>PdfArray</CODE>.
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* <P>
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* The newly added object will be the first element in the <CODE>ArrayList</CODE>.
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*
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* @param object <CODE>PdfObject</CODE> to add
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*/
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public void AddFirst(PdfObject obj) {
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arrayList.Insert(0, obj);
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}
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/**
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* Checks if the <CODE>PdfArray</CODE> allready contains a certain <CODE>PdfObject</CODE>.
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*
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* @param object <CODE>PdfObject</CODE> to check
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* @return <CODE>true</CODE>
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*/
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public bool Contains(PdfObject obj) {
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return arrayList.Contains(obj);
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}
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public ListIterator GetListIterator() {
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return new ListIterator(arrayList);
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}
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public override string ToString() {
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return arrayList.ToString();
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}
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public PdfObject GetPdfObject( int idx ) {
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return (PdfObject)arrayList[idx];
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}
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public PdfObject GetDirectObject( int idx ) {
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return PdfReader.GetPdfObject(GetPdfObject(idx));
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}
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// more of the same like PdfDictionary. (MAS 2/17/06)
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public PdfDictionary GetAsDict(int idx) {
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PdfDictionary dict = null;
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PdfObject orig = GetDirectObject(idx);
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if (orig != null && orig.IsDictionary())
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dict = (PdfDictionary) orig;
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return dict;
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}
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public PdfArray GetAsArray(int idx) {
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PdfArray array = null;
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PdfObject orig = GetDirectObject(idx);
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if (orig != null && orig.IsArray())
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array = (PdfArray) orig;
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return array;
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}
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public PdfStream GetAsStream(int idx) {
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PdfStream stream = null;
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PdfObject orig = GetDirectObject(idx);
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if (orig != null && orig.IsStream())
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stream = (PdfStream) orig;
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return stream;
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}
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public PdfString GetAsString(int idx) {
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PdfString str = null;
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PdfObject orig = GetDirectObject(idx);
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if (orig != null && orig.IsString())
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str = (PdfString) orig;
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return str;
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}
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public PdfNumber GetAsNumber(int idx) {
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PdfNumber number = null;
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PdfObject orig = GetDirectObject(idx);
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if (orig != null && orig.IsNumber())
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number = (PdfNumber) orig;
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return number;
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}
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public PdfName GetAsName(int idx) {
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PdfName name = null;
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PdfObject orig = GetDirectObject(idx);
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if (orig != null && orig.IsName())
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name = (PdfName) orig;
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return name;
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}
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public PdfBoolean GetAsBoolean(int idx) {
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PdfBoolean b = null;
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PdfObject orig = GetDirectObject(idx);
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if (orig != null && orig.IsBoolean())
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b = (PdfBoolean) orig;
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return b;
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}
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public PdfIndirectReference GetAsIndirectObject(int idx) {
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PdfIndirectReference refi = null;
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PdfObject orig = GetPdfObject(idx); // not getDirect this time.
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if (orig != null && orig.IsIndirect())
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refi = (PdfIndirectReference) orig;
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return refi;
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}
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}
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}
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