Swing TitledBorder needs option to prevent "text cropping"

Name: dbT83986 Date: 01/06/99


If the width of the text string in TitledBorder object exceeds the width
of the contained component, then the text will get "cropped" off. I feel
that the class should be changed so that the component would be resized
to preserve the text. It makes no sense to have a border title with its text
cropped, so forcing a resize of the contained component is a very natural
thing to do(since I would have to add the extra code to get it
done anyway). Basically you treat the text string as an object that
has its own geometry data that the layout manager should honor. As it is
now the layout manager ignores the width of the text which is why it is
getting cropped.

Here is the code to demonstrate the default behavior and the extra code
that is needed to prevent the cropping:

import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;

class tstTitleCrop {
    public static void main (String args[]) {
        JFrame frame = new JFrame();
        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {System.exit(0);}
        });

        JPanel pane = new JPanel();
        TitledBorder tb;
        //
        // LABEL1 - title border text gets cropped
        //
        JLabel label1 = new JLabel("This is label #1");
        tb = new TitledBorder("This is a very wide border title");
        label1.setBorder(tb);

        //
        // LABEL2 - jump through hoops to prevent title cropping
        //
        JLabel label2 = new JLabel("This is label #2");
        tb = new TitledBorder("This is a very wide border title");
        label2.setBorder(tb);

        // --- Start of extra stuff needed to prevent title cropping
        Dimension ldim = label2.getPreferredSize();
        int h = ldim.height;
        Insets insets = tb.getBorderInsets(label2);
        Dimension dim = tb.getMinimumSize(label2);
        int w = dim.width;
        w += insets.left; // This is needed to preserve pad on right side of title
        label2.setPreferredSize(new Dimension(w,h));
        // --- End of extra stuff

        pane.add(label1);
        pane.add(label2);

        // Then add the components to the frame
        frame.getContentPane().add(pane, BorderLayout.CENTER);

        frame.pack();
        frame.setVisible(true);
    }
}
(Review ID: 49113)
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