Java JTextPane setTabs(int charactersPerTab, JTextPane textpane)

Description

Sets the tabWidth for a textpane

License

Open Source License

Parameter

Parameter	Description
charactersPerTab	a parameter
textpane	a parameter

Declaration

public static void setTabs(int charactersPerTab, JTextPane textpane) 

Method Source Code

//package com.java2s;
/**//from   w  w w. j  a  v  a  2s. c o m
    
   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.
    
*/

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

1. setJTextPaneFont(JTextPane jtp, Font font, Color c)
2. setSelectionFontSize(JTextPane textPane, int fontSize)
3. setSelectionForeground(JTextPane textPane, Color color)
4. setStyle(JTextPane textPane, int start, int length, String name)
5. setStyle(JTextPane textPane, Style style)
6. setTextToPane(JTextPane textPane, String text, Color foregroundColor, Color backgroundColor)
7. writeImage(final JTextPane jtPane, final ImageIcon msg)