001/*
002 * Copyright 2006 - 2013
003 *     Stefan Balev     <stefan.balev@graphstream-project.org>
004 *     Julien Baudry    <julien.baudry@graphstream-project.org>
005 *     Antoine Dutot    <antoine.dutot@graphstream-project.org>
006 *     Yoann Pigné      <yoann.pigne@graphstream-project.org>
007 *     Guilhelm Savin   <guilhelm.savin@graphstream-project.org>
008 * 
009 * This file is part of GraphStream <http://graphstream-project.org>.
010 * 
011 * GraphStream is a library whose purpose is to handle static or dynamic
012 * graph, create them from scratch, file or any source and display them.
013 * 
014 * This program is free software distributed under the terms of two licenses, the
015 * CeCILL-C license that fits European law, and the GNU Lesser General Public
016 * License. You can  use, modify and/ or redistribute the software under the terms
017 * of the CeCILL-C license as circulated by CEA, CNRS and INRIA at the following
018 * URL <http://www.cecill.info> or under the terms of the GNU LGPL as published by
019 * the Free Software Foundation, either version 3 of the License, or (at your
020 * option) any later version.
021 * 
022 * This program is distributed in the hope that it will be useful, but WITHOUT ANY
023 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
024 * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
025 * 
026 * You should have received a copy of the GNU Lesser General Public License
027 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
028 * 
029 * The fact that you are presently reading this means that you have had
030 * knowledge of the CeCILL-C and LGPL licenses and that you accept their terms.
031 */
032package org.graphstream.ui.swingViewer.util;
033
034import java.awt.event.KeyEvent;
035
036import org.graphstream.ui.geom.Point3;
037import org.graphstream.ui.graphicGraph.GraphicGraph;
038import org.graphstream.ui.swingViewer.View;
039
040public class DefaultShortcutManager implements ShortcutManager {
041        // Attributes
042
043        /**
044         * The viewer to control.
045         */
046        protected View view;
047
048        protected double viewPercent = 1;
049
050        protected Point3 viewPos = new Point3();
051
052        protected double rotation = 0;
053
054        // Construction
055
056        public void init(GraphicGraph graph, View view) {
057                this.view = view;
058                view.addKeyListener(this);
059        }
060
061        public void release() {
062                view.removeKeyListener(this);
063        }
064
065        // Events
066
067        /**
068         * A key has been pressed.
069         * 
070         * @param event
071         *            The event that generated the key.
072         */
073        public void keyPressed(KeyEvent event) {
074                Camera camera = view.getCamera();
075
076                if (event.getKeyCode() == KeyEvent.VK_PAGE_UP) {
077                        camera.setViewPercent(Math.max(0.0001f,
078                                        camera.getViewPercent() * 0.9f));
079                } else if (event.getKeyCode() == KeyEvent.VK_PAGE_DOWN) {
080                        camera.setViewPercent(camera.getViewPercent() * 1.1f);
081                } else if (event.getKeyCode() == KeyEvent.VK_LEFT) {
082                        if ((event.getModifiers() & KeyEvent.ALT_MASK) != 0) {
083                                double r = camera.getViewRotation();
084                                camera.setViewRotation(r - 5);
085                        } else {
086                                double delta = 0;
087
088                                if ((event.getModifiers() & KeyEvent.SHIFT_MASK) != 0)
089                                        delta = camera.getGraphDimension() * 0.1f;
090                                else
091                                        delta = camera.getGraphDimension() * 0.01f;
092
093                                delta *= camera.getViewPercent();
094
095                                Point3 p = camera.getViewCenter();
096                                camera.setViewCenter(p.x - delta, p.y, 0);
097                        }
098                } else if (event.getKeyCode() == KeyEvent.VK_RIGHT) {
099                        if ((event.getModifiers() & KeyEvent.ALT_MASK) != 0) {
100                                double r = camera.getViewRotation();
101                                camera.setViewRotation(r + 5);
102                        } else {
103                                double delta = 0;
104
105                                if ((event.getModifiers() & KeyEvent.SHIFT_MASK) != 0)
106                                        delta = camera.getGraphDimension() * 0.1f;
107                                else
108                                        delta = camera.getGraphDimension() * 0.01f;
109
110                                delta *= camera.getViewPercent();
111
112                                Point3 p = camera.getViewCenter();
113                                camera.setViewCenter(p.x + delta, p.y, 0);
114                        }
115                } else if (event.getKeyCode() == KeyEvent.VK_UP) {
116                        double delta = 0;
117
118                        if ((event.getModifiers() & KeyEvent.SHIFT_MASK) != 0)
119                                delta = camera.getGraphDimension() * 0.1f;
120                        else
121                                delta = camera.getGraphDimension() * 0.01f;
122
123                        delta *= camera.getViewPercent();
124
125                        Point3 p = camera.getViewCenter();
126                        camera.setViewCenter(p.x, p.y + delta, 0);
127                } else if (event.getKeyCode() == KeyEvent.VK_DOWN) {
128                        double delta = 0;
129
130                        if ((event.getModifiers() & KeyEvent.SHIFT_MASK) != 0)
131                                delta = camera.getGraphDimension() * 0.1f;
132                        else
133                                delta = camera.getGraphDimension() * 0.01f;
134
135                        delta *= camera.getViewPercent();
136
137                        Point3 p = camera.getViewCenter();
138                        camera.setViewCenter(p.x, p.y - delta, 0);
139                }
140        }
141
142        /**
143         * A key has been pressed.
144         * 
145         * @param event
146         *            The event that generated the key.
147         */
148        public void keyReleased(KeyEvent event) {
149        }
150
151        /**
152         * A key has been typed.
153         * 
154         * @param event
155         *            The event that generated the key.
156         */
157        public void keyTyped(KeyEvent event) {
158                if (event.getKeyChar() == 'R') {
159                        view.getCamera().resetView();
160                }
161                // else if( event.getKeyChar() == 'B' )
162                // {
163                // view.setModeFPS( ! view.getModeFPS() );
164                // }
165        }
166}