001/* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-present, by David Gilbert 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 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
025 * Other names may be trademarks of their respective owners.]
026 *
027 */
028
029package org.jfree.chart.ui;
030
031import java.awt.GradientPaint;
032import java.awt.Shape;
033
034/**
035 * The interface for a class that can transform a {@code GradientPaint} to
036 * fit an arbitrary shape.
037 */
038public interface GradientPaintTransformer {
039    
040    /**
041     * Transforms a {@code GradientPaint} instance to fit some target 
042     * shape.  Classes that implement this method typically return a new
043     * instance of {@code GradientPaint}.
044     * 
045     * @param paint  the original paint (not {@code null}).
046     * @param target  the reference area (not {@code null}).
047     * 
048     * @return A transformed paint.
049     */
050    GradientPaint transform(GradientPaint paint, Shape target);
051
052}
053