net.sf.mzmine.chartbasics.listener.AxisRangeChangedListener.java Source code

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Here is the source code for net.sf.mzmine.chartbasics.listener.AxisRangeChangedListener.java

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/*
 * Copyright 2006-2018 The MZmine 2 Development Team
 * 
 * This file is part of MZmine 2.
 * 
 * MZmine 2 is free software; you can redistribute it and/or modify it under the terms of the GNU
 * General Public License as published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 * 
 * MZmine 2 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
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along with MZmine 2; if not,
 * write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
 * USA
 */

package net.sf.mzmine.chartbasics.listener;

import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.event.AxisChangeEvent;
import org.jfree.chart.event.AxisChangeListener;
import org.jfree.data.Range;
import net.sf.mzmine.chartbasics.gui.wrapper.ChartViewWrapper;

public abstract class AxisRangeChangedListener implements AxisChangeListener {

    // last lower / upper range
    private Range lastRange = null;
    private ChartViewWrapper chart;

    public AxisRangeChangedListener(ChartViewWrapper cp) {
        chart = cp;
    }

    @Override
    public void axisChanged(AxisChangeEvent e) {
        ValueAxis a = (ValueAxis) e.getAxis();
        Range r = a.getRange();

        if (r != null && (lastRange == null || !r.equals(lastRange))) {
            // range has changed
            axisRangeChanged(chart, a, lastRange, r);
        }
        lastRange = r;
    }

    /**
     * only if axis range has changed
     * 
     * @param axis
     * @param lastR
     * @param newR
     */
    public abstract void axisRangeChanged(ChartViewWrapper chart, ValueAxis axis, Range lastR, Range newR);
}