/* MultlineAtom.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 representing a vertical row of other atoms.
*/
public class MultlineAtom extends Atom {
final public static SpaceAtom vsep_in = new SpaceAtom(TeXConstants.UNIT_EX, 0.0f, 1.0f, 0.0f);
public static final int MULTLINE = 0;
public static final int GATHER = 1;
public static final int GATHERED = 2;
private ArrayOfAtoms column;
private int type1;
private boolean isPartial;
@Override
final public Atom duplicate() {
return setFields(new MultlineAtom(isPartial, column, type));
}
public MultlineAtom(boolean isPartial, ArrayOfAtoms column, int type) {
this.isPartial = isPartial;
this.column = column;
this.type1 = type;
}
public MultlineAtom(ArrayOfAtoms column, int type) {
this(false, column, type);
}
@Override
public Box createBox(TeXEnvironment env) {
double tw = env.getTextwidth();
if (tw == Double.POSITIVE_INFINITY || type1 == GATHERED) {
return new MatrixAtom(isPartial, column, "").createBox(env);
}
VerticalBox vb = new VerticalBox();
Atom at = column.get(0, 0);
int alignment = type1 == GATHER ? TeXConstants.ALIGN_CENTER : TeXConstants.ALIGN_LEFT;
if (at.alignment != -1) {
alignment = at.alignment;
}
vb.add(new HorizontalBox(at.createBox(env), tw, alignment));
Box Vsep = vsep_in.createBox(env);
for (int i = 1; i < column.row - 1; i++) {
at = column.get(i, 0);
alignment = TeXConstants.ALIGN_CENTER;
if (at.alignment != -1) {
alignment = at.alignment;
}
vb.add(Vsep);
vb.add(new HorizontalBox(at.createBox(env), tw, alignment));
}
if (column.row > 1) {
at = column.get(column.row - 1, 0);
alignment = type1 == GATHER ? TeXConstants.ALIGN_CENTER : TeXConstants.ALIGN_RIGHT;
if (at.alignment != -1) {
alignment = at.alignment;
}
vb.add(Vsep);
vb.add(new HorizontalBox(at.createBox(env), tw, alignment));
}
double height = vb.getHeight() + vb.getDepth();
vb.setHeight(height / 2);
vb.setDepth(height / 2);
return vb;
}
}