001 /*
002 * Rect.java
003 *
004 *
005 * The Salamander Project - 2D and 3D graphics libraries in Java
006 * Copyright (C) 2004 Mark McKay
007 *
008 * This library is free software; you can redistribute it and/or
009 * modify it under the terms of the GNU Lesser General Public
010 * License as published by the Free Software Foundation; either
011 * version 2.1 of the License, or (at your option) any later version.
012 *
013 * This library is distributed in the hope that it will be useful,
014 * but WITHOUT ANY WARRANTY; without even the implied warranty of
015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
016 * Lesser General Public License for more details.
017 *
018 * You should have received a copy of the GNU Lesser General Public
019 * License along with this library; if not, write to the Free Software
020 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
021 *
022 * Mark McKay can be contacted at mark@kitfox.com. Salamander and other
023 * projects can be found at http://www.kitfox.com
024 *
025 * Created on January 26, 2004, 5:25 PM
026 */
027
028 package com.kitfox.svg;
029
030 import java.awt.geom.*;
031 import java.awt.*;
032
033 import com.kitfox.svg.xml.*;
034
035 /**
036 * @author Mark McKay
037 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
038 */
039 public class Polyline extends ShapeElement {
040
041 int fillRule = GeneralPath.WIND_NON_ZERO;
042 String pointsStrn = "";
043 // float[] points = null;
044 GeneralPath path;
045
046 /** Creates a new instance of Rect */
047 public Polyline() {
048 }
049
050 /*
051 public void loaderStartElement(SVGLoaderHelper helper, Attributes attrs, SVGElement parent)
052 {
053 //Load style string
054 super.loaderStartElement(helper, attrs, parent);
055
056
057 points = XMLParseUtil.parseFloatList(attrs.getValue("points"));
058
059 build();
060 }
061 */
062
063 public void build() throws SVGException
064 {
065 super.build();
066
067 StyleAttribute sty = new StyleAttribute();
068
069 if (getPres(sty.setName("points"))) pointsStrn = sty.getStringValue();
070
071 String fillRuleStrn = getStyle(sty.setName("fill-rule")) ? sty.getStringValue() : "nonzero";
072 fillRule = fillRuleStrn.equals("evenodd") ? GeneralPath.WIND_EVEN_ODD : GeneralPath.WIND_NON_ZERO;
073
074 buildPath();
075 }
076
077 protected void buildPath()
078 {
079 float[] points = XMLParseUtil.parseFloatList(pointsStrn);
080 path = new GeneralPath(fillRule, points.length / 2);
081
082 path.moveTo(points[0], points[1]);
083 for (int i = 2; i < points.length; i += 2)
084 {
085 path.lineTo(points[i], points[i + 1]);
086 }
087 }
088
089 public void render(Graphics2D g) throws SVGException
090 {
091 beginLayer(g);
092 renderShape(g, path);
093 finishLayer(g);
094 }
095
096 public Shape getShape()
097 {
098 return shapeToParent(path);
099 }
100
101 public Rectangle2D getBoundingBox() throws SVGException
102 {
103 return boundsToParent(includeStrokeInBounds(path.getBounds2D()));
104 }
105
106 /**
107 * Updates all attributes in this diagram associated with a time event.
108 * Ie, all attributes with track information.
109 * @return - true if this node has changed state as a result of the time
110 * update
111 */
112 public boolean updateTime(double curTime) throws SVGException
113 {
114 // if (trackManager.getNumTracks() == 0) return false;
115 boolean changeState = super.updateTime(curTime);
116
117 //Get current values for parameters
118 StyleAttribute sty = new StyleAttribute();
119 boolean shapeChange = false;
120
121 if (getStyle(sty.setName("fill-rule")))
122 {
123 int newVal = sty.getStringValue().equals("evenodd")
124 ? GeneralPath.WIND_EVEN_ODD
125 : GeneralPath.WIND_NON_ZERO;
126 if (newVal != fillRule)
127 {
128 fillRule = newVal;
129 shapeChange = true;
130 }
131 }
132
133 if (getPres(sty.setName("points")))
134 {
135 String newVal = sty.getStringValue();
136 if (!newVal.equals(pointsStrn))
137 {
138 pointsStrn = newVal;
139 shapeChange = true;
140 }
141 }
142
143
144 if (shapeChange)
145 {
146 build();
147 // buildPath();
148 // return true;
149 }
150
151 return changeState || shapeChange;
152 }
153 }