CODEWITHSUNDEEP
javaswingjslider
Varun Madiath
Varun Madiath

Reputation: 3252

Custom range to use with JSlider

I'm trying to create a jslider that moves withing the following ranges.

[-x,-1)[1,x]

In short I don't want the values -1 and 0 to be valid values for the JSlider. But the values from x to -1 should be allowed, and 1 to x should be allowed.

I'm trying to not write hacky code, so I don't want to write a function in the UI code that just gets the value from a different (continuous) range, and then transforms it to the range I want with a bunch of it statements.

Ideally, I should just be able to call slider.getValue() and know that the return value will be in the range I described above.

Upvotes: 2

Views: 689

Answers (2)

trashgod
trashgod

Reputation: 205785

A slider's value is just the ratio between the thumb's current position and the sliders width, in pixels. IIUC, you have three ranges, [-x,-1), [-1,1) and [1,x], so you'll need two thumbs. You might look at JXMultiThumbSlider, which supports a MultiThumbModel.

Addendum: For a related use-case, I started with How to Write a Custom Swing Component. It's laborious, but it may produce a cleaner result.

Upvotes: 2

Boro
Boro

Reputation: 7943

I think you must do this value adjustment yourself perhaps within overridden method setValue()?

Try out this code:

    int x = 10;
    @Override
    public void setValue(int n)
    {
        if((n >= -x && n < -1)|| (n =< x && n >= 1))
        {   
            super.setValue(n);
            System.out.println("OI in setValue");
        }
    }

Upvotes: 2

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