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iText, a free Java-PDF library
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/*
 * $Id: DrawInterface.java 5075 2012-02-27 16:36:18Z blowagie $
 *
 * This file is part of the iText (R) project.
 * Copyright (c) 1998-2012 1T3XT BVBA
 * Authors: Bruno Lowagie, Paulo Soares, 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,
 * a covered work 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: [email protected]
 */
package com.itextpdf.text.pdf.draw;

import com.itextpdf.text.pdf.PdfContentByte;

/**
 * Interface for an Element that allows you to draw something at the current
 * vertical position. Trivial implementations are LineSeparator and VerticalPositionMark.
 * It is also used to define what has to be drawn by a separator chunk.
 * @since 2.1.2
 */
public interface DrawInterface {
	/**
	 * Implement this method if you want to draw something at the current Y position
	 * (for instance a line).
	 * @param	canvas	the canvas on which you can draw
	 * @param	llx		the x coordinate of the left page margin
	 * @param	lly		the y coordinate of the bottom page margin
	 * @param	urx		the x coordinate of the right page margin
	 * @param	ury		the y coordinate of the top page margin
	 * @param	y		the current y position on the page
	 */
    public void draw(PdfContentByte canvas, float llx, float lly, float urx, float ury, float y);    
}