    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 */
    042package org.jfree.ui;
    043
    044import 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 */
    052public 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}