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TextField too big

I have a JTextField that I have set the number of columns to 13. However, when it is displayed, it is bigger that the space needed to display "1234567890123". Why is this? What can I do about it? There is nothing in the container layout that is causing it to be stretched.

[286 byte] By [DancingCodera] at [2007-11-26 19:11:12]

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# 1

> I have a JTextField that I have set the number of

> columns to 13. However, when it is displayed, it is

> bigger that the space needed to display

> "1234567890123". Why is this? What can I do about it?

Try typing in WWWWWWWWWWWWW and iiiiiiiiiiii.

The width of each character in the font is not the same.

Easiest solution: make it smaller or don't worry about it. As long as the user can see all of what they are typing it should be good, right?

zadoka at 2007-7-9 21:08:07 >

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# 2

In this case, I am only displaying numeric values ("1-9", ".", ","), I don't have to worry about internationalization issues, and formatting is important. Is there a way to adjust the preferred size to the max size needed for a text string like "255.255.255.255"?

DancingCodera at 2007-7-9 21:08:07 >

# 3

> In this case, I am only displaying numeric values

> ("1-9", ".", ","), I don't have to worry about

> internationalization issues, and formatting is

> important.

> Is there a way to adjust the preferred size to the

> max size needed for a text string like

> "255.255.255.255"?

There might be a better way. But if 13 is too long, see how 12 looks with the data. If that is still too long try 11, etc.

zadoka at 2007-7-9 21:08:07 >

# 4

perhaps just creating it with the set number, then resetting the text might do

import javax.swing.*;

import java.awt.*;

class Testing

{

public void buildGUI()

{

JFrame f = new JFrame();

JTextField tf = new JTextField("255.255.255.255");

tf.setFont(new Font("monospaced",Font.PLAIN,12));

f.getContentPane().add(tf);

f.pack();

f.setLocationRelativeTo(null);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

tf.setText("");

f.setVisible(true);

}

public static void main(String[] args)

{

SwingUtilities.invokeLater(new Runnable(){

public void run(){

new Testing().buildGUI();

}

});

}

Michael_Dunna at 2007-7-9 21:08:07 >

# 5

Is there a way to adjust the preferred size to the max size needed for a text string like "255.255.255.255"?

JTextField ipAddressField = createSizedTextField("000.000.000.000");

...

public static final JTextField createSizedTextField(String sizingString)

{

JTextField f = new JTextField(sizingString);

f.setPreferredSize(f.getPreferredSize());

f.setText(null);

return f;

}

itchyscratchya at 2007-7-9 21:08:07 >

# 6

JTextField tf = new JTextField("255.255.255.255");This works very well.Thank you.

DancingCodera at 2007-7-9 21:08:07 >

# 7

f.setPreferredSize(f.getPreferredSize());Very important step!Thanks.

DancingCodera at 2007-7-9 21:08:07 >

# 8

Very nice itchyscratchy. Not something I have seen before.

zadoka at 2007-7-9 21:08:07 >

# 9

It's not something I've seen before either, I've never needed to do it. But it is at least PLAF/platform/etc independent (provided all numbers are the same width - some fonts may have narrower "1" glyphs, though it would be unusual). Naturally it may break if you then reconfigure the font/border/etc on the field, but the changes required to cope with that should be fairly obvious :o)

itchyscratchya at 2007-7-9 21:08:07 >

# 10

text = new JTextField(42);try this. The lower the number the smaller it is and the higher the number the bigger the textfield will be!

Vausta at 2007-7-9 21:08:08 >

# 11

Did you actually read this thread before posting that, or just the title?

itchyscratchya at 2007-7-9 21:08:08 >

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