Re: [jCrollPane]Positionning the view with a command

From:

Knute Johnson <nospam@rabbitbrush.frazmtn.com>

Newsgroups:

comp.lang.java.help

Date:

Sun, 19 Jul 2009 09:22:09 -0700

Message-ID:

<4a634831$0$21588$b9f67a60@news.newsdemon.com>

John B. Matthews wrote:

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'll admit it, I was too lazy to do the spinner.

[...]

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);

Now you're giving away all the secrets :-).

--

Knute Johnson
email s/nospam/knute2009/

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