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 August 15, 2004, 11:34 PM 035 */ 036 037package com.kitfox.svg.animation; 038 039import java.util.*; 040 041import com.kitfox.svg.*; 042import java.io.Serializable; 043 044/** 045 * Every element contains tracks, which manage the animation. There is one track 046 * for every parameter with animation, and each track in turn is composed of 047 * many events. 048 * 049 * @author Mark McKay 050 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a> 051 */ 052public class TrackManager implements Serializable 053{ 054 public static final long serialVersionUID = 0; 055 056 static class TrackKey 057 { 058 String name; 059 int type; 060 061 TrackKey(AnimationElement base) 062 { 063 this(base.getAttribName(), base.getAttribType()); 064 } 065 066 TrackKey(String name, int type) 067 { 068 this.name = name; 069 this.type = type; 070 } 071 072 public int hashCode() 073 { 074 int hash = name == null ? 0 : name.hashCode(); 075 hash = hash * 97 + type; 076 return hash; 077 } 078 079 public boolean equals(Object obj) 080 { 081 if (!(obj instanceof TrackKey)) return false; 082 TrackKey key = (TrackKey)obj; 083 return key.type == type && key.name.equals(name); 084 } 085 } 086 087 HashMap tracks = new HashMap(); 088 089 /** Creates a new instance of TrackManager */ 090 public TrackManager() 091 { 092 } 093 094 /** 095 * Adds a new animation element to this track 096 */ 097 public void addTrackElement(AnimationElement element) throws SVGElementException 098 { 099 TrackKey key = new TrackKey(element); 100 101 TrackBase track = (TrackBase)tracks.get(key); 102 103 if (track == null) 104 { 105 //Create a track for this element 106 if (element instanceof Animate) 107 { 108 switch (((Animate)element).getDataType()) 109 { 110 case Animate.DT_REAL: 111 track = new TrackDouble(element); 112 break; 113 case Animate.DT_COLOR: 114 track = new TrackColor(element); 115 break; 116 case Animate.DT_PATH: 117 track = new TrackPath(element); 118 break; 119 default: 120 throw new RuntimeException(""); 121 } 122 } 123 else if (element instanceof AnimateColor) 124 { 125 track = new TrackColor(element); 126 } 127 else if (element instanceof AnimateTransform || element instanceof AnimateMotion) 128 { 129 track = new TrackTransform(element); 130 } 131 132 tracks.put(key, track); 133 } 134 135 track.addElement(element); 136 } 137 138 public TrackBase getTrack(String name, int type) 139 { 140 //Handle AUTO, which will match either CSS or XML (in that order) 141 if (type == AnimationElement.AT_AUTO) 142 { 143 TrackBase t = getTrack(name, AnimationElement.AT_CSS); 144 if (t != null) return t; 145 t = getTrack(name, AnimationElement.AT_XML); 146 if (t != null) return t; 147 return null; 148 } 149 150 //Get requested attribute 151 TrackKey key = new TrackKey(name, type); 152 TrackBase t = (TrackBase)tracks.get(key); 153 if (t != null) return t; 154 155 //If that didn't exist, see if one exists of type AUTO 156 key = new TrackKey(name, AnimationElement.AT_AUTO); 157 return (TrackBase)tracks.get(key); 158 } 159 160 public int getNumTracks() 161 { 162 return tracks.size(); 163 } 164 165 public Iterator iterator() 166 { 167 return tracks.values().iterator(); 168 } 169}