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/* LaTeXViewer.java
* =========================================================================
* This file is part of the GrInvIn project - http://www.grinvin.org
*
* Copyright (C) 2005-2008 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 org.grinvin.help;
import be.ugent.caagt.jmathtex.TeXConstants;
import be.ugent.caagt.jmathtex.TeXFormula;
import be.ugent.caagt.jmathtex.TeXIcon;
import com.sun.java.help.impl.ViewAwareComponent;
import java.awt.Dimension;
import java.awt.Insets;
import javax.swing.JLabel;
import javax.swing.text.ComponentView;
import javax.swing.text.StyleConstants;
import javax.swing.text.View;
/**
*
*/
public class LaTeXViewer extends JLabel implements ViewAwareComponent {
private TeXFormula formula = new TeXFormula();
private float fontSize;
/** Creates a new instance of LaTeXViewer */
public LaTeXViewer() {
}
/** Creates a new instance of LaTeXViewer */
public LaTeXViewer(String text, View view) {
formula = new TeXFormula(text);
setViewData(view);
}
public void setLaTeX(String text) {
formula = new TeXFormula(text);
setIcon();
}
private void setIcon() {
TeXIcon icon = formula.createTeXIcon(TeXConstants.STYLE_DISPLAY, fontSize);
icon.setInsets(new Insets(1,1,1,1));
setPreferredSize(new Dimension(icon.getIconWidth(), icon.getIconHeight()));
setAlignmentY(icon.getBaseLine());
setIcon(icon);
}
public void setViewData(View view) {
//ComponentView always returns the default font size 12
//so we first escape the ComponentView
while(view instanceof ComponentView)
view = view.getParent();
fontSize = StyleConstants.getFontSize(view.getAttributes()) + 2;
//we take the font just a bit bigger for clearity.
setIcon();
}
}
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