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/* ColorAtom.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;
import java.awt.Color;
/**
* An atom representing the foreground and background color of an other atom.
*/
class ColorAtom extends Atom implements Row {
// background color
private final Color background;
// foreground color
private final Color color;
// RowAtom for which the colorsettings apply
private final RowAtom elements;
/**
* Creates a new ColorAtom that sets the given colors for the given atom.
* Null for a color means: no specific color set for this atom.
*
* @param atom the atom for which the given colors have to be set
* @param bg the background color
* @param c the foreground color
*/
public ColorAtom(Atom atom, Color bg, Color c) {
elements = new RowAtom(atom);
background = bg;
color = c;
}
/**
* Creates a ColorAtom that overrides the colors of the given ColorAtom if the given
* colors are not null. If they're null, the old values are used.
*
* @param bg the background color
* @param c the foreground color
* @param old the ColorAtom for which the colorsettings should be overriden with the
* given colors.
*/
public ColorAtom(Color bg, Color c, ColorAtom old) {
elements = new RowAtom(old.elements);
background = (bg == null ? old.background : bg);
color = (c == null ? old.color : c);
}
public Box createBox(TeXEnvironment env) {
TeXEnvironment copy = env.copy();
if (background != null)
copy.setBackground(background);
if (color != null)
copy.setColor(color);
return elements.createBox(copy);
}
public int getLeftType() {
return elements.getLeftType();
}
public int getRightType() {
return elements.getRightType();
}
public void setPreviousAtom(Dummy prev) {
elements.setPreviousAtom(prev);
}
}
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