    001/* ===========================================================
    002 * Orson Charts : a 3D chart library for the Java(tm) platform
    003 * ===========================================================
    004 *
    005 * (C)opyright 2013-2022, by David Gilbert.  All rights reserved.
    006 *
    007 * https://github.com/jfree/orson-charts
    008 *
    009 * This program is free software: you can redistribute it and/or modify
    010 * it under the terms of the GNU General Public License as published by
    011 * the Free Software Foundation, either version 3 of the License, or
    012 * (at your option) any later version.
    013 *
    014 * This program is distributed in the hope that it will be useful,
    015 * but WITHOUT ANY WARRANTY; without even the implied warranty of
    016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    017 * GNU General Public License for more details.
    018 *
    019 * You should have received a copy of the GNU General Public License
    020 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    021 *
    022 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
    023 * Other names may be trademarks of their respective owners.]
    024 *
    025 * If you do not wish to be bound by the terms of the GPL, an alternative
    026 * commercial license can be purchased.  For details, please see visit the
    027 * Orson Charts home page:
    028 *
    029 * http://www.object-refinery.com/orsoncharts/index.html
    030 *
    031 */
    032
    033package org.jfree.chart3d.graphics3d.swing;
    034
    035import java.awt.event.ActionEvent;
    036import javax.swing.AbstractAction;
    037import javax.swing.Action;
    038import org.jfree.chart3d.Resources;
    039import org.jfree.chart3d.internal.Args;
    040
    041/**
    042 * An action that handles rotating the 3D view towards the bottom of the screen.
    043 * <br><br>
    044 * NOTE: This class is serializable, but the serialization format is subject
    045 * to change in future releases and should not be relied upon for persisting
    046 * instances of this class.
    047 */
    048@SuppressWarnings("serial")
    049public class DownAction extends AbstractAction {
    050
    051    private final Panel3D panel;
    052
    053    /**
    054     * Creates a new action associated with the specified panel.
    055     *
    056     * @param panel  the panel ({@code null} not permitted).
    057     */
    058    public DownAction(Panel3D panel) {
    059        super("\uF063");
    060        Args.nullNotPermitted(panel, "panel");
    061        this.panel = panel;
    062        putValue(Action.SHORT_DESCRIPTION,
    063                Resources.localString("DOWN_ACTION_SHORT_DESCRIPTION"));
    064    }
    065
    066    @Override
    067    public void actionPerformed(ActionEvent e) {
    068        double delta = this.panel.getRotateIncrement();
    069        this.panel.getViewPoint().moveUpDown(-delta);
    070        this.panel.repaint();
    071    }
    072
    073}