/*
 * $Id: PdfPage.java,v 1.47 2004/11/29 14:07:03 blowagie Exp $
 * $Name:  $
 *
 * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
 *
 *
 * 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.
 *
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) 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.
 * 
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 *
 *
 * 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/
 */

package com.lowagie.text.pdf;
import java.util.HashMap;
/**
 * <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 extends PdfDictionary {

    private static final String boxStrings[] = {"crop", "trim", "art", "bleed"};
    private static final PdfName boxNames[] = {PdfName.CROPBOX, PdfName.TRIMBOX, PdfName.ARTBOX, PdfName.BLEEDBOX};
    // membervariables
    
/** value of the <B>Rotate</B> key for a page in PORTRAIT */
    public static final PdfNumber PORTRAIT = new PdfNumber(0);
    
/** value of the <B>Rotate</B> key for a page in LANDSCAPE */
    public static final PdfNumber LANDSCAPE = new PdfNumber(90);
    
/** value of the <B>Rotate</B> key for a page in INVERTEDPORTRAIT */
    public static final PdfNumber INVERTEDPORTRAIT = new PdfNumber(180);
    
/**	value of the <B>Rotate</B> key for a page in SEASCAPE */
    public static final 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
 */
    
//    PdfPage(PdfRectangle mediaBox, Rectangle cropBox, PdfIndirectReference resources, PdfNumber rotate) {
//        super(PAGE);
//        this.mediaBox = mediaBox;
//        put(PdfName.MEDIABOX, mediaBox);
//        put(PdfName.RESOURCES, resources);
//        if (rotate != null) {
//            put(PdfName.ROTATE, rotate);
//        }
//        if (cropBox != null)
//            put(PdfName.CROPBOX, new PdfRectangle(cropBox));
//    }
    
/**
 * 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
 */
    
    PdfPage(PdfRectangle mediaBox, HashMap boxSize, PdfDictionary resources, int rotate) {
        super(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.get(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
 */
    
//    PdfPage(PdfRectangle mediaBox, Rectangle cropBox, PdfIndirectReference resources) {
//        this(mediaBox, cropBox, resources, null);
//    }
    
/**
 * 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
 */
    
    PdfPage(PdfRectangle mediaBox, HashMap 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 boolean 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
 */
    
    void add(PdfIndirectReference contents) {
        put(PdfName.CONTENTS, contents);
    }
    
/**
 * Rotates the mediabox, but not the text in it.
 *
 * @return		a <CODE>PdfRectangle</CODE>
 */
    
    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>
 */
    
    PdfRectangle getMediaBox() {
        return mediaBox;
    }
}