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Java > Open Source Codes > org > jfree > ui > ExtendedDrawable


1 /* ========================================================================
2  * JCommon : a free general purpose class library for the Java(tm) platform
3  * ========================================================================
4  *
5  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
6  *
7  * Project Info: http://www.jfree.org/jcommon/index.html
8  *
9  * This library is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU Lesser General Public License as published by
11  * the Free Software Foundation; either version 2.1 of the License, or
12  * (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17  * License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22  * USA.
23  *
24  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
25  * in the United States and other countries.]
26  *
27  * ---------------------
28  * ExtendedDrawable.java
29  * ---------------------
30  * (C) Copyright 2002-2005, by Object Refinery Limited.
31  *
32  * Original Author: Thomas Morgner;
33  * Contributor(s): -;
34  *
35  * $Id: ExtendedDrawable.java,v 1.4 2005/10/18 13:18:34 mungady Exp $
36  *
37  * Changes
38  * -------
39  * 27-Apr-2005: Initial version.
40  *
41  */
42 package org.jfree.ui;
43
44 import java.awt.Dimension JavaDoc;
45
46 /**
47  * A drawable that has a preferred size and aspect ratio. Implement this interface to gain
48  * some control over the rendering and layouting process for the drawable.
49  *
50  * @author Thomas Morgner
51  */
52 public interface ExtendedDrawable extends Drawable
53 {
54   /**
55    * Returns the preferred size of the drawable. If the drawable is aspect ratio aware,
56    * these bounds should be used to compute the preferred aspect ratio for this drawable.
57    *
58    * @return the preferred size.
59    */
60   public Dimension JavaDoc getPreferredSize ();
61
62   /**
63    * Returns true, if this drawable will preserve an aspect ratio during the drawing.
64    *
65    * @return true, if an aspect ratio is preserved, false otherwise.
66    */
67   public boolean isPreserveAspectRatio ();
68 }
69
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