001 /*
002 * Stop.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, 1:56 AM
026 */
027
028 package com.kitfox.svg;
029
030 import com.kitfox.svg.xml.StyleAttribute;
031 import java.awt.*;
032 import java.util.*;
033
034 import com.kitfox.svg.xml.*;
035 import org.xml.sax.*;
036
037 /**
038 * @author Mark McKay
039 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
040 */
041 public class Stop extends SVGElement {
042
043 float offset = 0f;
044 float opacity = 1f;
045 Color color = Color.black;
046
047 /** Creates a new instance of Stop */
048 public Stop() {
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 String offset = attrs.getValue("offset");
057 this.offset = (float)XMLParseUtil.parseRatio(offset);
058
059 buildStop();
060 }
061 */
062
063 protected void build() throws SVGException
064 {
065 super.build();
066
067 StyleAttribute sty = new StyleAttribute();
068
069 if (getPres(sty.setName("offset")))
070 {
071 offset = sty.getFloatValue();
072 String units = sty.getUnits();
073 if (units != null && units.equals("%")) offset /= 100f;
074 if (offset > 1) offset = 1;
075 if (offset < 0) offset = 0;
076 }
077
078 if (getStyle(sty.setName("stop-color"))) color = sty.getColorValue();
079
080 if (getStyle(sty.setName("stop-opacity"))) opacity = sty.getRatioValue();
081 }
082
083 /**
084 * Updates all attributes in this diagram associated with a time event.
085 * Ie, all attributes with track information.
086 * @return - true if this node has changed state as a result of the time
087 * update
088 */
089 public boolean updateTime(double curTime) throws SVGException
090 {
091 // if (trackManager.getNumTracks() == 0) return false;
092
093 //Get current values for parameters
094 StyleAttribute sty = new StyleAttribute();
095 boolean shapeChange = false;
096
097 if (getPres(sty.setName("offset")))
098 {
099 float newVal = sty.getFloatValue();
100 if (newVal != offset)
101 {
102 offset = newVal;
103 shapeChange = true;
104 }
105 }
106
107 if (getPres(sty.setName("stop-color")))
108 {
109 Color newVal = sty.getColorValue();
110 if (newVal != color)
111 {
112 color = newVal;
113 shapeChange = true;
114 }
115 }
116
117 if (getPres(sty.setName("stop-opacity")))
118 {
119 float newVal = sty.getFloatValue();
120 if (newVal != opacity)
121 {
122 opacity = newVal;
123 shapeChange = true;
124 }
125 }
126
127 return shapeChange;
128 }
129 }