    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    }