/* VRowAtom.java
* =========================================================================
* This file is originally part of the JMathTeX Library - http://jmathtex.sourceforge.net
*
* Copyright (C) 2004-2007 Universiteit Gent
* Copyright (C) 2009 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.
*
*/
/* Modified by Calixte Denizet */
package com.himamis.retex.renderer.share;
import java.util.LinkedList;
import java.util.ListIterator;
/**
* An atom representing a vertical row of other atoms.
*/
public class VRowAtom extends Atom {
// atoms to be displayed horizontally next to eachother
protected LinkedList<Atom> elements = new LinkedList<Atom>();
private SpaceAtom raise = new SpaceAtom(TeXConstants.UNIT_EX, 0, 0, 0);
protected boolean addInterline = false;
@Override
final public Atom duplicate() {
return setFields(new VRowAtom(elements, raise, addInterline));
}
public VRowAtom() {
// empty
}
public VRowAtom(Atom el) {
if (el != null) {
if (el instanceof VRowAtom) {
// no need to make an mrow the only element of an mrow
elements.addAll(((VRowAtom) el).elements);
} else {
elements.add(el);
}
}
}
private VRowAtom(LinkedList<Atom> elements, SpaceAtom raise, boolean addInterline) {
this.elements = elements;
this.raise = raise;
this.addInterline = addInterline;
}
public void setAddInterline(boolean addInterline) {
this.addInterline = addInterline;
}
public boolean getAddInterline() {
return this.addInterline;
}
public void setRaise(int unit, double r) {
raise = new SpaceAtom(unit, r, 0, 0);
}
public Atom getLastAtom() {
return elements.removeLast();
}
public final void add(Atom el) {
if (el != null) {
elements.add(0, el);
}
}
public final void append(Atom el) {
if (el != null) {
elements.add(el);
}
}
@Override
public Box createBox(TeXEnvironment env) {
VerticalBox vb = new VerticalBox();
Box interline = new StrutBox(0, env.getInterline(), 0, 0);
// convert atoms to boxes and add to the horizontal box
for (ListIterator it = elements.listIterator(); it.hasNext();) {
vb.add(((Atom) it.next()).createBox(env));
if (addInterline && it.hasNext()) {
vb.add(interline);
}
}
vb.setShift(-raise.createBox(env).getWidth());
double t = vb.getSize() == 0 ? 0 : vb.children.getLast().getDepth();
vb.setHeight(vb.getDepth() + vb.getHeight() - t);
vb.setDepth(t);
return vb;
}
}