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Re: JSlider interactions

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On Tuesday, July 30, 2013 6:57:01 PM UTC-7, John B. Matthews wrote:
> In article <81940cb0-8687-40f5-8eda-68bf8c8ff935@googlegroups.com>,
> 
>  FredK <fred.l.kleinschmidt@gmail.com> wrote:
> 
> 
> 
> > Is there a way to set the block increment for a JSlider ? By this I 
> 
> > mean the change in value that occurs when the user clicks between the 
> 
> > current position and one of the ends (similar to the block or unit 
> 
> > increment for a JScrollBar). I can't find anything to do this in 
> 
> > JScrollBar or BoundedRangeModel.
> 
> > 
> 
> > Or is it a UI-specific amount (I am using Nimbus).
> 
> > 
> 
> > For an integer slider, I want to drag the knob to the approximate 
> 
> > position, and then be able to click near it to move one integer at a 
> 
> > time. It appears that the default amount is 10% of the range, so when 
> 
> > the range is from 0 to 40, clicking in the "trough" area moves the 
> 
> > value by 4.
> 
> 
> 
> This handled by an instance of BasicSliderUI.TrackListener, for which 
> 
> you'll need a custom UI delegate, as shown here,
> 
> 
> 
> <http://stackoverflow.com/a/518672/230513>
> 
> 
> 
> and in How to Write a Custom Swing Component:
> 
> 
> 
> <https://today.java.net/pub/a/today/2007/02/22/how-to-write-custom-swing-component.html>
> 
> 
> 
> Interestingly, BasicSliderUI.ScrollListener is public, apparently to 
> 
> work around an IE bug.
> 
> 
> 
> As an aside, the API for each says.
> 
> 
> 
>   Instantiate it only within subclasses of .
> 
> 
> 
> while the source says,
> 
> 
> 
>   Instantiate it only within subclasses of <Foo>.
> 
> 

I tried:
      slider.setUI( new BasicSliderUI( slider ) {
         @Override
         protected void scrollDueToClickInTrack( int direction ) {
            int value = slider.getValue();
            value += direction;
            slider.setValue( value );
         }
      } );

which works, but gives me a Basic LAF. The rest of my app is using Nimbus.
I haven't been able to figure out how to find or use a Nimbus SliderUI.
When I call slider.getUI(), it returns an instance of javax.swing.plaf.synth.SynthSliderUI.
If I change BasicSliderUI in the above code with SynthSliderUI, I get
an error saying that that class is not visible.
(Using Java 1.6)
-- 
Fred K

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JSlider interactions FredK <fred.l.kleinschmidt@gmail.com> - 2013-07-30 14:24 -0700
  Re: JSlider interactions "John B. Matthews" <nospam@nospam.invalid> - 2013-07-30 21:57 -0400
    Re: JSlider interactions FredK <fred.l.kleinschmidt@gmail.com> - 2013-07-31 10:34 -0700
      Re: JSlider interactions "John B. Matthews" <nospam@nospam.invalid> - 2013-08-01 17:50 -0400

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