001 /* ========================================================================
002 * JCommon : a free general purpose class library for the Java(tm) platform
003 * ========================================================================
004 *
005 * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
006 *
007 * Project Info: http://www.jfree.org/jcommon/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 * GradientPaintTransformer.java
029 * -----------------------------
030 * (C) Copyright 2003-2007, by Object Refinery Limited.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): -;
034 *
035 * $Id: GradientPaintTransformer.java,v 1.4 2007/04/03 12:34:13 mungady Exp $
036 *
037 * Changes
038 * -------
039 * 28-Oct-2003 : Version 1 (DG);
040 *
041 */
042
043 package org.jfree.ui;
044
045 import java.awt.GradientPaint;
046 import java.awt.Shape;
047
048 /**
049 * The interface for a class that can transform a <code>GradientPaint</code> to
050 * fit an arbitrary shape.
051 *
052 * @author David Gilbert
053 */
054 public interface GradientPaintTransformer {
055
056 /**
057 * Transforms a <code>GradientPaint</code> instance to fit some target
058 * shape. Classes that implement this method typically return a new
059 * instance of <code>GradientPaint</code>.
060 *
061 * @param paint the original paint (not <code>null</code>).
062 * @param target the reference area (not <code>null</code>).
063 *
064 * @return A transformed paint.
065 */
066 public GradientPaint transform(GradientPaint paint, Shape target);
067
068 }