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/* UnderlinedAtom.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;
/**
* An atom representing another atom with a line under it.
*/
class UnderlinedAtom extends Atom {
// the base to be underlined
private final Atom base;
public UnderlinedAtom(Atom f) {
base = f;
type = TeXConstants.TYPE_ORDINARY; // for spacing rules
}
public Box createBox(TeXEnvironment env) {
float drt = env.getTeXFont().getDefaultRuleThickness(env.getStyle());
// create formula box in same style
Box b = (base == null ? new StrutBox(0, 0, 0, 0) : base.createBox(env));
// create vertical box
VerticalBox vBox = new VerticalBox();
vBox.add(b);
vBox.add(new StrutBox(0, 3 * drt, 0, 0));
vBox.add(new HorizontalRule(drt, b.getWidth(), 0));
// baseline vertical box = baseline box b
// there's also an invisible strut of height drt under the rule
vBox.setDepth(b.getDepth() + 5 * drt);
vBox.setHeight(b.getHeight());
return vBox;
}
}
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