Re: [jCrollPane]Positionning the view with a command

From:
"John B. Matthews" <nospam@nospam.invalid>
Newsgroups:
comp.lang.java.help
Date:
Sat, 18 Jul 2009 19:25:58 -0400
Message-ID:
<nospam-D08787.19255818072009@news.aioe.org>
In article <4a61fc3e$0$5402$b9f67a60@news.newsdemon.com>,
 Knute Johnson <nospam@rabbitbrush.frazmtn.com> wrote:

Daniel Moyne wrote:

[...]

Now how do I recover information on the vertical slider to set its position
with my selected int variable ?


Knute: Your approach is very appealing. As an alternative, I replaced
your JTextField with a JSpinner:

        JSpinner js= new JSpinner();
        js.setModel(new SpinnerNumberModel(0, 0, 9, 1));
        js.addChangeListener(new ChangeListener() {
            //@Override
            public void stateChanged(ChangeEvent e) {
                JSpinner s = (JSpinner) e.getSource();
                int n = (Integer) s.getValue();
                JViewport vp = sp.getViewport();
                Point p = panels[n].getLocation();
                vp.setViewPosition(p);
            }
        });
        add(js, BorderLayout.SOUTH);

[...]

I also centered n vertically, in NPanel by adding half the font height:

        int h = fm.getHeight() / 2;
        g.drawString(nStr,(getWidth()-w)/2,(getHeight()+h)/2);
  
--
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>

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