/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2011, 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.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* --------------------
* ShadowGenerator.java
* --------------------
* (C) Copyright 2009, 2011, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes:
* --------
* 10-Jul-2009 : Version 1 (DG);
*
*/
package org.jfree.chart.util;
import java.awt.image.BufferedImage;
/**
* An interface that defines the API for a shadow generator. Some plot
* classes use this to create drop shadows.
*
* @since 1.0.14
*/
public interface ShadowGenerator {
/**
* Creates and returns an image containing the drop shadow for the
* specified source image.
*
* @param source the source image.
*
* @return A new image containing the shadow.
*/
public BufferedImage createDropShadow(BufferedImage source);
/**
* Calculates the x-offset for drawing the shadow image relative to the
* source.
*
* @return The x-offset.
*/
public int calculateOffsetX();
/**
* Calculates the y-offset for drawing the shadow image relative to the
* source.
*
* @return The y-offset.
*/
public int calculateOffsetY();
}
|