using System;
using System.Drawing;
using System.util;
/*
 * $Id: TextMarginFinder.cs 158 2010-04-18 20:31:15Z psoares33 $
 *
 * This file is part of the iText project.
 * Copyright (c) 1998-2012 1T3XT BVBA
 * Authors: Bruno Lowagie, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 *
 * This program 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 Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * you must retain the producer line in every PDF that is created or manipulated
 * using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */
namespace iTextSharp.text.pdf.parser {

    /**
     * Allows you to find the rectangle that contains all the text in a page.
     * @since 5.0.2
     */
    public class TextMarginFinder : IRenderListener {
        private RectangleJ textRectangle = null;
        
        /**
         * Method invokes by the PdfContentStreamProcessor.
         * Passes a TextRenderInfo for every text chunk that is encountered.
         * We'll use this object to obtain coordinates.
         * @see com.itextpdf.text.pdf.parser.RenderListener#renderText(com.itextpdf.text.pdf.parser.TextRenderInfo)
         */
        public void RenderText(TextRenderInfo renderInfo) {
            if (textRectangle == null)
                textRectangle = renderInfo.GetDescentLine().GetBoundingRectange();
            else
                textRectangle.Add(renderInfo.GetDescentLine().GetBoundingRectange());
            
            textRectangle.Add(renderInfo.GetAscentLine().GetBoundingRectange());

        }

        /**
         * Getter for the left margin.
         * @return the X position of the left margin
         */
        public float GetLlx() {
            return textRectangle.X;
        }

        /**
         * Getter for the bottom margin.
         * @return the Y position of the bottom margin
         */
        public float GetLly() {
            return textRectangle.Y;
        }

        /**
         * Getter for the right margin.
         * @return the X position of the right margin
         */
        public float GetUrx() {
            return textRectangle.X + textRectangle.Width;
        }

        /**
         * Getter for the top margin.
         * @return the Y position of the top margin
         */
        public float GetUry() {
            return textRectangle.Y + textRectangle.Height;
        }

        /**
         * Gets the width of the text block.
         * @return a width
         */
        public float GetWidth() {
            return textRectangle.Width;
        }
        
        /**
         * Gets the height of the text block.
         * @return a height
         */
        public float GetHeight() {
            return textRectangle.Height;
        }
        
        /**
         * @see com.itextpdf.text.pdf.parser.RenderListener#beginTextBlock()
         */
        public void BeginTextBlock() {
            // do nothing
        }

        /**
         * @see com.itextpdf.text.pdf.parser.RenderListener#endTextBlock()
         */
        public void EndTextBlock() {
            // do nothing
        }

        /**
         * @see com.itextpdf.text.pdf.parser.RenderListener#renderImage(com.itextpdf.text.pdf.parser.ImageRenderInfo)
         */
        public void RenderImage(ImageRenderInfo renderInfo) {
            // do nothing
        }
    }
}