Re: getting a JSlider to expand

From:
"John B. Matthews" <nospam@nospam.com>
Newsgroups:
comp.lang.java.help
Date:
Sat, 12 Jul 2008 14:45:55 -0400
Message-ID:
<nospam-407C7B.14452512072008@aioe.org>
In article <jNZdk.72234$Jx.23947@pd7urf1no>,
 thufir <hawat.thufir@gmail.com> wrote:

red, green and blue are instance of LabelSliderText, which extends
JPanel. How can I get the three "rows", beans, to line up vertically?

I suppose I could pass in:

"red "
"green"
"blue "

so that the spacing matches up?

[...]

Can you use setHorizontalAlignment on the JLabel?

Also, I can't figure out how to make the JSlider expand horizontally when
the JFrame is enlarged. The surrounding JPane, "green " for instance,
does seem to expand.


Can you set the horizontal component of your JSlider's preferred size
to a large number and add it to a panel having a suitable layout?

<sscce>
import java.awt.*;
import javax.swing.*;

/**
 * JSliderTest
 * @author John B. Matthews
 */
public class JSliderTest extends JPanel {

    public static void main(String args[]) {
        JFrame frame = new JFrame("Sliders!");
        frame.setContentPane(new JSliderTest());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(500, 200);
        frame.setVisible(true);
    }

    public JSliderTest() {
        this.setLayout(new GridLayout(3, 1));
        this.add(genSliderPanel("Red"));
        this.add(genSliderPanel("Green"));
        this.add(genSliderPanel("Blue"));
    }

    private JPanel genSliderPanel(String name) {
        JPanel panel = new JPanel();
        panel.setLayout(new BoxLayout(panel, BoxLayout.X_AXIS));

        JLabel label = new JLabel(name);
        label.setHorizontalAlignment(JLabel.RIGHT);
        label.setMinimumSize(new Dimension(60, 0));
        panel.add(label);

        JSlider slider = new JSlider();
        slider.setPreferredSize(new Dimension(Short.MAX_VALUE, 0));
        panel.add(slider);
        return panel;
    }

}
</sscce>

I'm sure you already looked at JColorChooser.

[...]
--
John B. Matthews
trashgod at gmail dot com
home dot woh dot rr dot com slash jbmatthews

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