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.basicRenderer;
033
034import java.awt.Color;
035import java.awt.Graphics2D;
036import java.awt.geom.Ellipse2D;
037
038import org.graphstream.ui.graphicGraph.GraphicElement;
039import org.graphstream.ui.graphicGraph.GraphicNode;
040import org.graphstream.ui.graphicGraph.StyleGroup;
041import org.graphstream.ui.graphicGraph.stylesheet.Values;
042import org.graphstream.ui.graphicGraph.stylesheet.StyleConstants;
043import org.graphstream.ui.graphicGraph.stylesheet.StyleConstants.FillMode;
044import org.graphstream.ui.graphicGraph.stylesheet.StyleConstants.SizeMode;
045import org.graphstream.ui.swingViewer.util.Camera;
046import org.graphstream.ui.swingViewer.util.GraphMetrics;
047
048public class NodeRenderer extends ElementRenderer {
049        protected GraphMetrics metrics;
050
051        protected Values size;
052
053        protected Ellipse2D shape;
054
055        protected double width, height, w2, h2;
056
057        @Override
058        protected void setupRenderingPass(StyleGroup group, Graphics2D g,
059                        Camera camera) {
060                metrics = camera.getMetrics();
061                configureText(group, camera);
062        }
063
064        @Override
065        protected void pushDynStyle(StyleGroup group, Graphics2D g, Camera camera,
066                        GraphicElement element) {
067                Color color = group.getFillColor(0);
068
069                if (element != null && group.getFillMode() == FillMode.DYN_PLAIN)
070                        color = interpolateColor(group, element);
071
072                g.setColor(color);
073
074                if (group.getSizeMode() == SizeMode.DYN_SIZE) {
075                        Object s = element.getAttribute("ui.size");
076
077                        if (s != null) {
078                                width = metrics.lengthToGu(StyleConstants.convertValue(s));
079                                height = width;
080                                w2 = width / 2;
081                                h2 = height / 2;
082                        } else {
083                                size = group.getSize();
084                                width = metrics.lengthToGu(size, 0);
085                                height = size.size() > 1 ? metrics.lengthToGu(size, 1) : width;
086                                w2 = width / 2;
087                                h2 = height / 2;
088                        }
089                }
090        }
091
092        @Override
093        protected void pushStyle(StyleGroup group, Graphics2D g, Camera camera) {
094                size = group.getSize();
095                shape = new Ellipse2D.Double();
096                width = metrics.lengthToGu(size, 0);
097                height = size.size() > 1 ? metrics.lengthToGu(size, 1) : width;
098                w2 = width / 2;
099                h2 = height / 2;
100
101                Color color = group.getFillColor(0);
102
103                g.setColor(color);
104        }
105
106        @Override
107        protected void elementInvisible(StyleGroup group, Graphics2D g,
108                        Camera camera, GraphicElement element) {
109        }
110
111        @Override
112        protected void renderElement(StyleGroup group, Graphics2D g, Camera camera,
113                        GraphicElement element) {
114                GraphicNode node = (GraphicNode) element;
115
116                shape.setFrame(node.x - w2, node.y - h2, width, height);
117                g.fill(shape);
118                renderText(group, g, camera, element);
119        }
120}