1 files changed, 104 insertions, 0 deletions
diff --git a/src/main/java/com/kitfox/svg/animation/TrackBase.java b/src/main/java/com/kitfox/svg/animation/TrackBase.java
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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 com.kitfox.svg.xml.StyleAttribute;
+import java.util.*;
+
+import com.kitfox.svg.xml.*;
+import com.kitfox.svg.*;
+
+/**
+ * A track holds the animation events for a single parameter of a single SVG 
+ * element.  It also contains the default value for the element, should the
+ * user want to see the 'unanimated' value.
+ *
+ * @author Mark McKay
+ * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
+ */
+abstract public class TrackBase
+{
+    protected final String attribName;
+    protected final int attribType;  //AnimationElement.AT_*
+ 
+    /** Element we're animating */
+    protected final SVGElement parent;
+    
+    //It doesn't make sense to sort this, since some events will depend on
+    // other events - in many cases, there will be no meaningful sorted order.
+    final Vector animEvents = new Vector();
+    
+    /** Creates a new instance of TrackManager */
+//    public TrackBase(SVGElement parent)
+//    {
+//        this(parent, "", AnimationElement.AT_AUTO);
+//    }
+    
+    /**
+     * Creates a track that would be valid for the name and type of element
+     * passed in.  Does not actually add this elemnt to the track.
+     */
+    public TrackBase(SVGElement parent, AnimationElement ele) throws SVGElementException
+    {
+        this(parent, ele.getAttribName(), ele.getAttribType());
+    }
+    
+    public TrackBase(SVGElement parent, String attribName, int attribType) throws SVGElementException
+    {
+        this.parent = parent;
+        this.attribName = attribName;
+        this.attribType = attribType;
+        
+        //Make sure parent has an attribute we will write to
+        if (attribType == AnimationElement.AT_AUTO 
+            && !parent.hasAttribute(attribName, AnimationElement.AT_CSS)
+            && !parent.hasAttribute(attribName, AnimationElement.AT_XML))
+        {
+            parent.addAttribute(attribName, AnimationElement.AT_CSS, "");
+        }
+        else if (!parent.hasAttribute(attribName, attribType))
+        {
+            parent.addAttribute(attribName, attribType, "");
+        }
+    }
+    
+    public String getAttribName() { return attribName; }
+    public int getAttribType() { return attribType; }
+    
+    public void addElement(AnimationElement ele)
+    {
+        animEvents.add(ele);
+    }
+    
+    /**
+     * Returns a StyleAttribute representing the value of this track at the
+     * passed time.  If this track does not apply, returns null.
+     * @return - True if successful, false if a value could not be obtained
+     */
+    abstract public boolean getValue(StyleAttribute attrib, double curTime) throws SVGException;
+    
+}