jfreechart example source code file (Arrangement.java)

This example jfreechart source code file (Arrangement.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - jfreechart tags/keywords

arrangement, awt, graphics2d, graphics2d, object, object, rectangleconstraint, rectangleconstraint, size2d, size2d

The jfreechart Arrangement.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * ----------------
 * Arrangement.java
 * ----------------
 * (C) Copyright 2004-2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes:
 * --------
 * 22-Oct-2004 : Version 1 (DG);
 * 11-Feb-2005 : Modified arrange() method to return Size2D (DG);
 * 22-Apr-2005 : Reordered arguments in arrange() method (DG);
 *
 */

package org.jfree.chart.block;

import java.awt.Graphics2D;

import org.jfree.ui.Size2D;

/**
 * An object that is responsible for arranging a collection of {@link Block}s
 * within a {@link BlockContainer}.
 */
public interface Arrangement {

    /**
     * Adds a block and a key which can be used to determine the position of
     * the block in the arrangement.  This method is called by the container
     * (you don't need to call this method directly) and gives the arrangement
     * an opportunity to record the details if they are required.
     *
     * @param block  the block.
     * @param key  the key (<code>null permitted).
     */
    public void add(Block block, Object key);

    /**
     * Arranges the blocks within the specified container, subject to the given
     * constraint.
     *
     * @param container  the container (<code>null not permitted).
     * @param g2  the graphics device.
     * @param constraint  the constraint.
     *
     * @return The container size after the arrangement.
     */
    public Size2D arrange(BlockContainer container,
                          Graphics2D g2,
                          RectangleConstraint constraint);

    /**
     * Clears any cached layout information retained by the arrangement.
     */
    public void clear();

}