001/*
002 * SVG Salamander
003 * Copyright (c) 2004, Mark McKay
004 * All rights reserved.
005 *
006 * Redistribution and use in source and binary forms, with or 
007 * without modification, are permitted provided that the following
008 * conditions are met:
009 *
010 *   - Redistributions of source code must retain the above 
011 *     copyright notice, this list of conditions and the following
012 *     disclaimer.
013 *   - Redistributions in binary form must reproduce the above
014 *     copyright notice, this list of conditions and the following
015 *     disclaimer in the documentation and/or other materials 
016 *     provided with the distribution.
017 *
018 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
019 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
020 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
021 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
022 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
023 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
025 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
026 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
027 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
028 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
029 * OF THE POSSIBILITY OF SUCH DAMAGE. 
030 * 
031 * Mark McKay can be contacted at mark@kitfox.com.  Salamander and other
032 * projects can be found at http://www.kitfox.com
033 *
034 * Created on January 26, 2004, 5:25 PM
035 */
036package com.kitfox.svg;
037
038import com.kitfox.svg.xml.StyleAttribute;
039import com.kitfox.svg.xml.XMLParseUtil;
040import java.awt.Graphics2D;
041import java.awt.Shape;
042import java.awt.geom.GeneralPath;
043import java.awt.geom.Rectangle2D;
044
045/**
046 * @author Mark McKay
047 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
048 */
049public class Polyline extends ShapeElement
050{
051    public static final String TAG_NAME = "polyline";
052    
053    int fillRule = GeneralPath.WIND_NON_ZERO;
054    String pointsStrn = "";
055    GeneralPath path;
056
057    /**
058     * Creates a new instance of Rect
059     */
060    public Polyline()
061    {
062    }
063
064    @Override
065    public String getTagName()
066    {
067        return TAG_NAME;
068    }
069
070    @Override
071    public void build() throws SVGException
072    {
073        super.build();
074
075        StyleAttribute sty = new StyleAttribute();
076
077        if (getPres(sty.setName("points")))
078        {
079            pointsStrn = sty.getStringValue();
080        }
081
082        String fillRuleStrn = getStyle(sty.setName("fill-rule")) ? sty.getStringValue() : "nonzero";
083        fillRule = fillRuleStrn.equals("evenodd") ? GeneralPath.WIND_EVEN_ODD : GeneralPath.WIND_NON_ZERO;
084
085        buildPath();
086    }
087
088    protected void buildPath()
089    {
090        float[] points = XMLParseUtil.parseFloatList(pointsStrn);
091        path = new GeneralPath(fillRule, points.length / 2);
092
093        path.moveTo(points[0], points[1]);
094        for (int i = 2; i < points.length; i += 2)
095        {
096            path.lineTo(points[i], points[i + 1]);
097        }
098    }
099
100    @Override
101    public void render(Graphics2D g) throws SVGException
102    {
103        beginLayer(g);
104        renderShape(g, path);
105        finishLayer(g);
106    }
107
108    @Override
109    public Shape getShape()
110    {
111        return shapeToParent(path);
112    }
113
114    @Override
115    public Rectangle2D getBoundingBox() throws SVGException
116    {
117        return boundsToParent(includeStrokeInBounds(path.getBounds2D()));
118    }
119
120    /**
121     * Updates all attributes in this diagram associated with a time event. Ie,
122     * all attributes with track information.
123     *
124     * @return - true if this node has changed state as a result of the time
125     * update
126     */
127    @Override
128    public boolean updateTime(double curTime) throws SVGException
129    {
130//        if (trackManager.getNumTracks() == 0) return false;
131        boolean changeState = super.updateTime(curTime);
132
133        //Get current values for parameters
134        StyleAttribute sty = new StyleAttribute();
135        boolean shapeChange = false;
136
137        if (getStyle(sty.setName("fill-rule")))
138        {
139            int newVal = sty.getStringValue().equals("evenodd")
140                ? GeneralPath.WIND_EVEN_ODD
141                : GeneralPath.WIND_NON_ZERO;
142            if (newVal != fillRule)
143            {
144                fillRule = newVal;
145                shapeChange = true;
146            }
147        }
148
149        if (getPres(sty.setName("points")))
150        {
151            String newVal = sty.getStringValue();
152            if (!newVal.equals(pointsStrn))
153            {
154                pointsStrn = newVal;
155                shapeChange = true;
156            }
157        }
158
159
160        if (shapeChange)
161        {
162            build();
163//            buildPath();
164//            return true;
165        }
166
167        return changeState || shapeChange;
168    }
169}