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/* VCenteredAtom.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 vertically centered with respect to the axis
* (determined by a general TeXFont parameter)
*/
class VCenteredAtom extends Atom {
// atom to be centered vertically with respect to the axis
private final Atom atom;
public VCenteredAtom(Atom atom) {
this.atom = atom;
}
public Box createBox(TeXEnvironment env) {
Box b = atom.createBox(env);
float total = b.getHeight() + b.getDepth(), axis = env.getTeXFont()
.getAxisHeight(env.getStyle());
// center on axis
b.setShift(-(total / 2) - axis);
// put in horizontal box, so shifting will be vertically!
return new HorizontalBox(b);
}
}
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