/* HdotsforAtom.java
 * =========================================================================
 * This file is part of the JLaTeXMath Library - http://forge.scilab.org/jlatexmath
 *
 * Copyright (C) 2010 DENIZET Calixte
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * 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
 * General Public License for more details.
 *
 * A copy of the GNU General Public License can be found in the file
 * LICENSE.txt provided with the source distribution of this program (see
 * the META-INF directory in the source jar). This license can also be
 * found on the GNU website at http://www.gnu.org/licenses/gpl.html.
 *
 * If you did not receive a copy of the GNU General Public License along
 * with this program, contact the lead developer, or write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 *
 * Linking this library statically or dynamically with other modules 
 * is making a combined work based on this library. Thus, the terms 
 * and conditions of the GNU General Public License cover the whole 
 * combination.
 * 
 * As a special exception, the copyright holders of this library give you 
 * permission to link this library with independent modules to produce 
 * an executable, regardless of the license terms of these independent 
 * modules, and to copy and distribute the resulting executable under terms 
 * of your choice, provided that you also meet, for each linked independent 
 * module, the terms and conditions of the license of that module. 
 * An independent module is a module which is not derived from or based 
 * on this library. If you modify this library, you may extend this exception 
 * to your version of the library, but you are not obliged to do so. 
 * If you do not wish to do so, delete this exception statement from your 
 * version.
 * 
 */

package com.himamis.retex.renderer.share;

/**
 * An atom used in array mode to write on several columns.
 */
public class HdotsforAtom extends MulticolumnAtom {

	private static final Atom ldotp = SymbolAtom.get("ldotp");
	private static final Atom thin = new SpaceAtom(TeXConstants.THINMUSKIP);
	private double coeff;

	@Override
	final public Atom duplicate() {
		
		HdotsforAtom ret = new HdotsforAtom();
		
		ret.n = n;
		ret.align = align;
		ret.w = w;
		ret.cols = cols;
		ret.beforeVlines = beforeVlines;
		ret.afterVlines = afterVlines;
		ret.row = row;
		ret.col = col;
		
		ret.coeff = coeff;

		return setFields(ret);
	}

	public HdotsforAtom(int n, double coeff) {
		super(n, "c", ldotp);
		this.coeff = coeff;
	}

	private HdotsforAtom() {
		super();
	}

	@Override
	public Box createBox(TeXEnvironment env) {
		Box sp = new StrutBox(coeff * thin.createBox(env).getWidth(), 0, 0, 0);
		HorizontalBox db = new HorizontalBox(sp);
		db.add(ldotp.createBox(env));
		db.add(sp);
		Box b;
		if (w != 0) {
			b = new HorizontalBox(db);
			while (b.getWidth() < w) {
				b.add(db);
			}
			b = new HorizontalBox(b, w, TeXConstants.ALIGN_CENTER);
		} else {
			b = db;
		}

		b.type = TeXConstants.TYPE_MULTICOLUMN;
		return b;
	}
}