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

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Here is the source code for net.sf.mzmine.chartbasics.listener.AxesRangeChangedListener.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;

/**
 * Listener for multiple axes
 * 
 * @author Robin Schmid (robinschmid@uni-muenster.de)
 */
public abstract class AxesRangeChangedListener implements AxisChangeListener {

    // last lower / upper range
    private ValueAxis[] axis;
    private Range[] lastRange = null;
    private ChartViewWrapper chart;

    /**
     * Creates no listeners. Needs to by notified by external AxisRangeChangedListeners
     */
    public AxesRangeChangedListener(int axiscount) {
        axis = new ValueAxis[axiscount];
        lastRange = new Range[axiscount];
    }

    /**
     * Creates two axisrangechangedlistener for the Domain and Range axis
     * 
     * @param cp
     */
    public AxesRangeChangedListener(ChartViewWrapper cp) {
        this(2);
        chart = cp;
        if (chart != null && chart.getChart() != null) {
            chart.getChart().getXYPlot().getDomainAxis().addChangeListener(this);
            chart.getChart().getXYPlot().getRangeAxis().addChangeListener(this);
        }
    }

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

        boolean found = false;
        int i = 0;
        for (i = 0; i < axis.length && !found; i++) {
            // get index of axis
            if (axis[i] == null)
                break;
            if (a.equals(axis[i])) {
                found = true;
                break;
            }
        }
        if (i >= axis.length)
            i = axis.length - 1;
        // insert if not found
        if (!found) {
            axis[i] = a;
        }

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

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