Column number in JTextArea?

Hi
How do I get column number of current cursor
in JTextArea? I need to display this info
in my editor.
This is complicated by the fact that tab size
is not fixed, typing a combination of space
and tabs randomly can result in tabs
having tab size of 1 amid normal tabs.
Hence counting the number of chars in the
current line up to cursor position, call it C,
then C minus number of tabs, T and plus
T * tabSize won't work because tabSize is
sometimes 1.
Thanks
miawomi

Hello
Just figure out how to do this. In case anyone
get stuck with the same problem, here is my
soln:
JTextArea textArea = ...
int caretPos = textArea.getCaretPosition();
int lineCount = textArea.getLineCount();
int tabSize = textArea.getTabSize();
int currentLine = 1;
String str = "";
int c = 0;
try {
currentLine = textArea.getLineOfOffset( caretPos );
int startOffset =
textArea.getLineStartOffset (currentLine );
str = textArea.getText( startOffset,
caretPos-startOffset );
FontMetrics fm = textArea.getFontMetrics( textArea.getFont() );
                    StringBuffer buffer = new StringBuffer();
for ( int i = 0; i < tabSize; i++ )
buffer.append(" ");
int tabWidth = fm.stringWidth( buffer.toString() );
for ( int i = 0; i < str.length(); i++ ) {          char C = str.charAt( i );
                         if ( fm.charWidth( C ) == tabWidth )
                              c = c + tabSize;
                         else
                              c++;
               } catch ( BadLocationException ex ) {
                    ex.printStackTrace();
If anyone has a much less cpu intensive solution,
please let me know.
Thanks in advance
miaw

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