/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ---------------
* PaintScale.java
* ---------------
* (C) Copyright 2006, 2007, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 05-Jul-2006 : Version 1 (DG);
* 31-Jan-2007 : Added getLowerBound() and getUpperBound() methods (DG);
*
*/
package org.jfree.chart.renderer;
import java.awt.Paint;
import org.jfree.chart.renderer.xy.XYBlockRenderer;
/**
* A source for <code>Paint</code> instances, used by the
* {@link XYBlockRenderer}.
* <br><br>
* NOTE: Classes that implement this interface should also implement
* <code>PublicCloneable</code> and <code>Serializable</code>, so
* that any renderer (or other object instance) that references an instance of
* this interface can still be cloned or serialized.
*
* @since 1.0.4
*/
public interface PaintScale {
/**
* Returns the lower bound for the scale.
*
* @return The lower bound.
*
* @see #getUpperBound()
*/
public double getLowerBound();
/**
* Returns the upper bound for the scale.
*
* @return The upper bound.
*
* @see #getLowerBound()
*/
public double getUpperBound();
/**
* Returns a <code>Paint</code> instance for the specified value.
*
* @param value the value.
*
* @return A <code>Paint</code> instance (never <code>null</code>).
*/
public Paint getPaint(double value);
}
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