Sets the tab Width for a JTextPane - Java Swing

Java examples for Swing:JTextPane

  1. HOME
  2. Java
  3. Swing
  4. JTextPane

Description

Sets the tab Width for a JTextPane

Demo Code

/**/*from  www. ja  v a  2  s  .c om*/

   BlackBoard BreadBoard Designer
   Written and maintained by Matthias Pueski 
           
   Copyright (c) 2010-2011 Matthias Pueski
           
   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.
           
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

 */
//package com.java2s;
import java.awt.FontMetrics;
import javax.swing.JTextPane;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.TabSet;
import javax.swing.text.TabStop;

public class Main {
    /**
     * Sets the tabWidth for a textpane
     * 
     * @param charactersPerTab
     * @param textpane
     */

    public static void setTabs(int charactersPerTab, JTextPane textpane) {

        charactersPerTab--;

        FontMetrics fm = textpane.getFontMetrics(textpane.getFont());
        int charWidth = fm.charWidth('w');
        int tabWidth = charWidth * charactersPerTab;

        TabStop[] tabs = new TabStop[10];

        for (int j = 0; j < tabs.length; j++) {
            int tab = j + 1;
            tabs[j] = new TabStop(tab * tabWidth);
        }

        TabSet tabSet = new TabSet(tabs);
        SimpleAttributeSet attributes = new SimpleAttributeSet();
        StyleConstants.setTabSet(attributes, tabSet);
        int length = textpane.getDocument().getLength();
        textpane.getStyledDocument().setParagraphAttributes(0, length,
                attributes, false);

    }
}

Related Tutorials