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/*
* TrackManager.java
*
* The Salamander Project - 2D and 3D graphics libraries in Java
* Copyright (C) 2004 Mark McKay
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Mark McKay can be contacted at mark@kitfox.com. Salamander and other
* projects can be found at http://www.kitfox.com
*
* Created on August 15, 2004, 11:34 PM
*/
package com.kitfox.svg.animation;
import java.util.*;
import com.kitfox.svg.*;
import java.io.Serializable;
/**
* Every element contains tracks, which manage the animation. There is one track
* for every parameter with animation, and each track in turn is composed of
* many events.
*
* @author Mark McKay
* @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
*/
public class TrackManager implements Serializable
{
public static final long serialVersionUID = 0;
static class TrackKey
{
String name;
int type;
TrackKey(AnimationElement base)
{
this(base.getAttribName(), base.getAttribType());
}
TrackKey(String name, int type)
{
this.name = name;
this.type = type;
}
public int hashCode()
{
int hash = name == null ? 0 : name.hashCode();
hash = hash * 97 + type;
return hash;
}
public boolean equals(Object obj)
{
if (!(obj instanceof TrackKey)) return false;
TrackKey key = (TrackKey)obj;
return key.type == type && key.name.equals(name);
}
}
HashMap tracks = new HashMap();
/** Creates a new instance of TrackManager */
public TrackManager()
{
}
/**
* Adds a new animation element to this track
*/
public void addTrackElement(AnimationElement element) throws SVGElementException
{
TrackKey key = new TrackKey(element);
TrackBase track = (TrackBase)tracks.get(key);
if (track == null)
{
//Create a track for this element
if (element instanceof Animate)
{
switch (((Animate)element).getDataType())
{
case Animate.DT_REAL:
track = new TrackDouble(element);
break;
case Animate.DT_COLOR:
track = new TrackColor(element);
break;
case Animate.DT_PATH:
track = new TrackPath(element);
break;
default:
throw new RuntimeException("");
}
}
else if (element instanceof AnimateColor)
{
track = new TrackColor(element);
}
else if (element instanceof AnimateTransform || element instanceof AnimateMotion)
{
track = new TrackTransform(element);
}
tracks.put(key, track);
}
track.addElement(element);
}
public TrackBase getTrack(String name, int type)
{
//Handle AUTO, which will match either CSS or XML (in that order)
if (type == AnimationElement.AT_AUTO)
{
TrackBase t = getTrack(name, AnimationElement.AT_CSS);
if (t != null) return t;
t = getTrack(name, AnimationElement.AT_XML);
if (t != null) return t;
return null;
}
//Get requested attribute
TrackKey key = new TrackKey(name, type);
TrackBase t = (TrackBase)tracks.get(key);
if (t != null) return t;
//If that didn't exist, see if one exists of type AUTO
key = new TrackKey(name, AnimationElement.AT_AUTO);
return (TrackBase)tracks.get(key);
}
public int getNumTracks()
{
return tracks.size();
}
public Iterator iterator()
{
return tracks.values().iterator();
}
}
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