001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
006 *
007 * Project Info: http://www.jfree.org/jfreechart/index.html
008 *
009 * This library is free software; you can redistribute it and/or modify it
010 * under the terms of the GNU Lesser General Public License as published by
011 * the Free Software Foundation; either version 2.1 of the License, or
012 * (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but
015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
017 * License for more details.
018 *
019 * You should have received a copy of the GNU Lesser General Public
020 * License along with this library; if not, write to the Free Software
021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
022 * USA.
023 *
024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
025 * in the United States and other countries.]
026 *
027 * ------------------
028 * ValueAxisPlot.java
029 * ------------------
030 *
031 * (C) Copyright 2003-2008, by Object Refinery Limited and Contributors.
032 *
033 * Original Author: David Gilbert (for Object Refinery Limited);
034 * Contributor(s): -;
035 *
036 * Changes
037 * -------
038 * 07-May-2003 : Version 1 (DG);
039 * 11-Nov-2004 : Changed Horizontal --> Domain and Vertical --> Range (DG);
040 * 12-Nov-2004 : Moved zooming methods to new Zoomable interface (DG);
041 *
042 */
043
044 package org.jfree.chart.plot;
045
046 import org.jfree.chart.axis.ValueAxis;
047 import org.jfree.data.Range;
048
049 /**
050 * An interface that is implemented by plots that use a {@link ValueAxis},
051 * providing a standard method to find the current data range.
052 */
053 public interface ValueAxisPlot {
054
055 /**
056 * Returns the data range that should apply for the specified axis.
057 *
058 * @param axis the axis.
059 *
060 * @return The data range.
061 */
062 public Range getDataRange(ValueAxis axis);
063
064 }