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.graphicGraph.stylesheet;
033
034/**
035 * A value and the units of the value.
036 * 
037 * <p>
038 * As a style sheet may express values in several different units. This class
039 * purpose is to pack the value and the units it is expressed in into a single
040 * object.
041 * </p>
042 */
043public class Value extends Number {
044        // Attributes
045
046        private static final long serialVersionUID = 1L;
047
048        /**
049         * The value.
050         */
051        public double value;
052
053        /**
054         * The value units.
055         */
056        public Style.Units units;
057
058        // Constructor
059
060        /**
061         * New value.
062         * 
063         * @param units
064         *            The value units.
065         * @param value
066         *            The value.
067         */
068        public Value(Style.Units units, double value) {
069                this.value = value;
070                this.units = units;
071        }
072
073        /**
074         * New copy of another value.
075         * 
076         * @param other
077         *            The other value to copy.
078         */
079        public Value(Value other) {
080                this.value = other.value;
081                this.units = other.units;
082        }
083
084        @Override
085        public float floatValue() {
086                return (float)value;
087        }
088
089        @Override
090        public double doubleValue() {
091                return value;
092        }
093
094        @Override
095        public int intValue() {
096                return (int)Math.round(value);
097        }
098
099        @Override
100        public long longValue() {
101                return Math.round(value);
102        }
103
104        @Override
105        public String toString() {
106                StringBuilder builder = new StringBuilder();
107
108                builder.append(value);
109
110                switch (units) {
111                case GU:
112                        builder.append("gu");
113                        break;
114                case PX:
115                        builder.append("px");
116                        break;
117                case PERCENTS:
118                        builder.append("%");
119                        break;
120                default:
121                        builder.append("wtf (what's the fuck?)");
122                        break;
123                }
124
125                return builder.toString();
126        }
127
128        public boolean equals(Value o) {
129                if (o != this) {
130                        if (!(o instanceof Value))
131                                return false;
132
133                        Value other = (Value) o;
134
135                        if (other.units != units)
136                                return false;
137
138                        if (other.value != value)
139                                return false;
140                }
141
142                return true;
143        }
144}