using System;
using System.Collections;

using iTextSharp.text;

/*
 * $Id: PdfPage.cs,v 1.3 2008/05/13 11:25:21 psoares33 Exp $
 * 
 *
 * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 */

namespace iTextSharp.text.pdf {
    /**
     * <CODE>PdfPage</CODE> is the PDF Page-object.
     * <P>
     * A Page object is a dictionary whose keys describe a single page containing text,
     * graphics, and images. A Page onjects is a leaf of the Pages tree.<BR>
     * This object is described in the 'Portable Document Format Reference Manual version 1.3'
     * section 6.4 (page 73-81)
     *
     * @see     PdfPageElement
     * @see     PdfPages
     */

    public class PdfPage : PdfDictionary {
    
        // membervariables
        private static String[] boxStrings = {"crop", "trim", "art", "bleed"};
        private static PdfName[] boxNames = {PdfName.CROPBOX, PdfName.TRIMBOX, PdfName.ARTBOX, PdfName.BLEEDBOX};
    
        /** value of the <B>Rotate</B> key for a page in PORTRAIT */
        public static PdfNumber PORTRAIT = new PdfNumber(0);
    
        /** value of the <B>Rotate</B> key for a page in LANDSCAPE */
        public static PdfNumber LANDSCAPE = new PdfNumber(90);
    
        /** value of the <B>Rotate</B> key for a page in INVERTEDPORTRAIT */
        public static PdfNumber INVERTEDPORTRAIT = new PdfNumber(180);
    
        /** value of the <B>Rotate</B> key for a page in SEASCAPE */
        public static PdfNumber SEASCAPE = new PdfNumber(270);
    
        /** value of the <B>MediaBox</B> key */
        PdfRectangle mediaBox;
    
        // constructors
    
        /**
         * Constructs a <CODE>PdfPage</CODE>.
         *
         * @param       mediaBox        a value for the <B>MediaBox</B> key
         * @param       resources       an indirect reference to a <CODE>PdfResources</CODE>-object
         * @param       rotate          a value for the <B>Rotate</B> key
         */
    
        internal PdfPage(PdfRectangle mediaBox, Hashtable boxSize, PdfDictionary resources, int rotate) : base(PAGE) {
            this.mediaBox = mediaBox;
            Put(PdfName.MEDIABOX, mediaBox);
            Put(PdfName.RESOURCES, resources);
            if (rotate != 0) {
                Put(PdfName.ROTATE, new PdfNumber(rotate));
            }
            for (int k = 0; k < boxStrings.Length; ++k) {
                PdfObject rect = (PdfObject)boxSize[boxStrings[k]];
                if (rect != null)
                    Put(boxNames[k], rect);
            }
        }
    
        /**
         * Constructs a <CODE>PdfPage</CODE>.
         *
         * @param       mediaBox        a value for the <B>MediaBox</B> key
         * @param       resources       an indirect reference to a <CODE>PdfResources</CODE>-object
         */
    
        internal PdfPage(PdfRectangle mediaBox, Hashtable boxSize, PdfDictionary resources) : this(mediaBox, boxSize, resources, 0) {
        }
    
        /**
         * Checks if this page element is a tree of pages.
         * <P>
         * This method allways returns <CODE>false</CODE>.
         *
         * @return  <CODE>false</CODE> because this is a single page
         */
    
        public bool IsParent() {
            return false;
        }
    
        // methods
    
        /**
         * Adds an indirect reference pointing to a <CODE>PdfContents</CODE>-object.
         *
         * @param       contents        an indirect reference to a <CODE>PdfContents</CODE>-object
         */
    
        internal void Add(PdfIndirectReference contents) {
            Put(PdfName.CONTENTS, contents);
        }
    
        /**
         * Rotates the mediabox, but not the text in it.
         *
         * @return      a <CODE>PdfRectangle</CODE>
         */
    
        internal PdfRectangle RotateMediaBox() {
            this.mediaBox =  mediaBox.Rotate;
            Put(PdfName.MEDIABOX, this.mediaBox);
            return this.mediaBox;
        }
    
        /**
         * Returns the MediaBox of this Page.
         *
         * @return      a <CODE>PdfRectangle</CODE>
         */
    
        internal PdfRectangle MediaBox {
            get {
                return mediaBox;
            }
        }
    }
}