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/* MunderoverParser.java
* =========================================================================
* This file is part of the JMathTeX Library - http://jmathtex.sourceforge.net
*
* Copyright (C) 2004-2007 Universiteit Gent
*
* 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.
*
*/
package be.ugent.caagt.jmathtex.mathml;
import java.util.List;
import org.jdom.Element;
import be.ugent.caagt.jmathtex.TeXFormula;
class MunderoverParser extends PresentationElementParser {
private static final String ACC_UNDER = "accentunder", ACC_OVER = "accent";
private static final float LIM_SPACE = 0.8f;
public TeXFormula buildFormula(Element el, Environment env)
throws MathMLException {
List formulas = MathMLParser.getFormulaList(el.getChildren(), env);
if (formulas.size() != 3)
throw new MathMLException("munderover needs exactly 3 child elements!");
// get element attribute value
String accentUnder = el.getAttributeValue(ACC_UNDER), accentOver = el
.getAttributeValue(ACC_OVER);
// if attribute value not set, use environment value if set
if (accentUnder == null)
accentUnder = env.get(ACC_UNDER);
if (accentOver == null)
accentOver = env.get(ACC_OVER);
boolean accent = false;
float u = LIM_SPACE, o = LIM_SPACE;
boolean uScript = true, oScript = true;
if (accentUnder != null && accentUnder.equals("true")) {
accent = true;
u = ACC_SPACE;
uScript = false;
}
if (accentOver != null && accentOver.equals("true")) {
accent = true;
o = ACC_SPACE;
oScript = false;
}
if (accent)
// units are guranteed to be valid
return ((TeXFormula) formulas.get(0)).putUnderAndOver(
(TeXFormula) formulas.get(1), ACC_LIM_UNIT, u, uScript,
(TeXFormula) formulas.get(2), ACC_LIM_UNIT, o, oScript);
else
// default
return new TeXFormula()
.addOp((TeXFormula) formulas.get(0), (TeXFormula) formulas
.get(1), (TeXFormula) formulas.get(2), true);
}
}
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