view flys-artifacts/src/main/java/de/intevation/flys/jfree/DoubleBounds.java @ 2407:dce0cc856357

'Bezugslinien': Added axis labels matching the displayed data. flys-artifacts/trunk@4036 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 10 Feb 2012 16:00:57 +0000
parents 73b15736cb80
children cbe2febe30cc
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package de.intevation.flys.jfree;


import org.jfree.chart.axis.ValueAxis;
import org.jfree.data.Range;


/**
 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
 */
public class DoubleBounds implements Bounds {

    protected double lower;
    protected double upper;


    /**
     * Default constructor. <b>A DoubleBounds has always set lower &lt;
     * upper!</b>
     */
    public DoubleBounds(double lower, double upper) {
        this.lower = Math.min(lower, upper);
        this.upper = Math.max(lower, upper);
    }


    @Override
    public Number getLower() {
        return Double.valueOf(lower);
    }


    @Override
    public Number getUpper() {
        return Double.valueOf(upper);
    }


    @Override
    public void applyBounds(ValueAxis axis) {
        axis.setRange(new Range(lower, upper));
    }


    @Override
    public void applyBounds(ValueAxis axis, int percent) {
        double space = (upper - lower) / 100 * percent;
        axis.setRange(new Range(lower-space, upper+space));
    }


    @Override
    public Bounds combine(Bounds bounds) {
        if (bounds == null) {
            return this;
        }

        DoubleBounds other = (DoubleBounds) bounds;

        double otherLower = other.getLower().doubleValue();
        double otherUpper = other.getUpper().doubleValue();

        return new DoubleBounds(
            otherLower < lower ? otherLower : lower,
            otherUpper > upper ? otherUpper : upper);
    }


    @Override
    public String toString() {
        return "DoubleBounds=[" + lower + " ; " + upper + "]";
    }
}
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