com.rapidminer.gui.new_plotter.engine.jfreechart.link_and_brush.axis.CustomLogarithmicAxis.java Source code

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Here is the source code for com.rapidminer.gui.new_plotter.engine.jfreechart.link_and_brush.axis.CustomLogarithmicAxis.java

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/**
 * Copyright (C) 2001-2015 by RapidMiner and the contributors
 *
 * Complete list of developers available at our web site:
 *
 *      http://rapidminer.com
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package com.rapidminer.gui.new_plotter.engine.jfreechart.link_and_brush.axis;

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

/**
 * Wrapper class for {@link LogarithmicAxis} that overrides the resizing behaviour.
 * 
 * @author Nils Woehler
 * 
 */
public class CustomLogarithmicAxis extends LogarithmicAxis implements LinkAndBrushAxis {

    private static final long serialVersionUID = 1L;

    public CustomLogarithmicAxis(String label) {
        super(label);
    }

    private double upperBoundCache = Double.NEGATIVE_INFINITY;
    private double lowerBoundCache = Double.POSITIVE_INFINITY;

    private double upperBoundWithoutMargin = Double.NEGATIVE_INFINITY;
    private double lowerBoundWithoutMargin = Double.POSITIVE_INFINITY;

    @Override
    public void setLowerBound(double min) {
        if (getRange().getUpperBound() > min) {
            this.lowerBoundCache = min;
            setRange(new Range(min, getRange().getUpperBound()));
        } else {
            this.lowerBoundCache = min + 1.0;
            setRange(new Range(min, min + 1.0));
        }
    }

    @Override
    public void setUpperBound(double max) {
        if (getRange().getLowerBound() < max) {
            this.upperBoundCache = max;
            setRange(new Range(getRange().getLowerBound(), max));
        } else {
            this.upperBoundCache = max - 1.0;
            setRange(max - 1.0, max);
        }
    }

    @Override
    public void saveUpperBound(double max, double maxWOMargin) {
        setUpperBound(max);
        this.upperBoundWithoutMargin = maxWOMargin;
    }

    @Override
    public void saveLowerBound(double min, double minWOMargin) {
        setLowerBound(min);
        this.lowerBoundWithoutMargin = minWOMargin;
    }

    @Override
    public void resizeRange(double percent, double anchorValue) {
        if (percent > 0.0) {
            double halfLength = getRange().getLength() * percent / 2;
            Range adjusted = new Range(anchorValue - halfLength, anchorValue + halfLength);
            setRange(adjusted);
        } else {
            restoreAutoRange(true);
        }
    }

    @Override
    public void resizeRange2(double percent, double anchorValue) {
        if (percent > 0.0) {
            double left = anchorValue - getLowerBound();
            double right = getUpperBound() - anchorValue;
            Range adjusted = new Range(anchorValue - left * percent, anchorValue + right * percent);
            setRange(adjusted);
        } else {
            restoreAutoRange(true);
        }
    }

    @Override
    public Range calculateZoomRange(double lowerPercent, double upperPercent, boolean zoomIn) {
        double startLog = switchedLog10(getRange().getLowerBound());
        double lengthLog = switchedLog10(getRange().getUpperBound()) - startLog;
        Range adjusted;

        if (isInverted()) {
            adjusted = new Range(switchedPow10(startLog + (lengthLog * (1 - upperPercent))),
                    switchedPow10(startLog + (lengthLog * (1 - lowerPercent))));
        } else {
            adjusted = new Range(switchedPow10(startLog + (lengthLog * lowerPercent)),
                    switchedPow10(startLog + (lengthLog * upperPercent)));
        }

        if (zoomIn) {
            setRange(adjusted);
        }

        return adjusted;
    }

    @Override
    public Range restoreAutoRange(boolean zoomOut) {
        if (upperBoundCache < lowerBoundCache) {
            upperBoundCache = lowerBoundCache + 1;
        }
        Range autoRange = new Range(lowerBoundCache, upperBoundCache);
        if (zoomOut) {
            setRange(autoRange);
        }
        return new Range(lowerBoundWithoutMargin, upperBoundWithoutMargin);
    }
}