Java JTextComponent Column getColumnNumber(JTextComponent editor, int pos)

Description

Gets the column number at given position of editor.

License

Apache License

Parameter

Parameter	Description
editor	a parameter
pos	a parameter

Exception

Parameter	Description

Return

the 0 based column number

Declaration

public static int getColumnNumber(JTextComponent editor, int pos) throws BadLocationException 

Method Source Code

//package com.java2s;
/*/*w  w  w.ja  v  a  2 s  . c om*/
 * Copyright 2008 Ayman Al-Sairafi ayman.alsairafi@gmail.com
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License 
 *       at http://www.apache.org/licenses/LICENSE-2.0 
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and 
 * limitations under the License.  
 */

import java.awt.Point;
import java.awt.Rectangle;

import javax.swing.text.BadLocationException;

import javax.swing.text.JTextComponent;

public class Main {
    /**
     * Gets the column number at given position of editor.  The first column is
     * ZERO
     * @param editor
     * @param pos
     * @return the 0 based column number
     * @throws javax.swing.text.BadLocationException
     */
    public static int getColumnNumber(JTextComponent editor, int pos) throws BadLocationException {
        // speedup if the pos is 0
        if (pos == 0) {
            return 0;
        }
        Rectangle r = editor.modelToView(pos);
        int start = editor.viewToModel(new Point(0, r.y));
        int column = pos - start;
        return column;
    }
}

Related

1. getColumn(int pos, JTextComponent editor)
2. getColumn(JTextComponent editor, int pos)
3. getColumnAtPosition(JTextComponent editor, int caretPosition)
4. getDocumentPosition(JTextComponent editor, int line, int column)
5. setCaretPosition(JTextComponent target, int line, int column)