001 /* ========================================================================
002 * JCommon : a free general purpose class library for the Java(tm) platform
003 * ========================================================================
004 *
005 * (C) Copyright 2000-2005, 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 * ExtendedDrawable.java
029 * ---------------------
030 * (C) Copyright 2002-2005, by Object Refinery Limited.
031 *
032 * Original Author: Thomas Morgner;
033 * Contributor(s): -;
034 *
035 * $Id: ExtendedDrawable.java,v 1.4 2005/10/18 13:18:34 mungady Exp $
036 *
037 * Changes
038 * -------
039 * 27-Apr-2005: Initial version.
040 *
041 */
042 package org.jfree.ui;
043
044 import java.awt.Dimension;
045
046 /**
047 * A drawable that has a preferred size and aspect ratio. Implement this interface to gain
048 * some control over the rendering and layouting process for the drawable.
049 *
050 * @author Thomas Morgner
051 */
052 public interface ExtendedDrawable extends Drawable
053 {
054 /**
055 * Returns the preferred size of the drawable. If the drawable is aspect ratio aware,
056 * these bounds should be used to compute the preferred aspect ratio for this drawable.
057 *
058 * @return the preferred size.
059 */
060 public Dimension getPreferredSize ();
061
062 /**
063 * Returns true, if this drawable will preserve an aspect ratio during the drawing.
064 *
065 * @return true, if an aspect ratio is preserved, false otherwise.
066 */
067 public boolean isPreserveAspectRatio ();
068 }