org.apache.batik.gvt
Class UpdateTracker

java.lang.Object
  |
  +--org.apache.batik.gvt.event.GraphicsNodeChangeAdapter
        |
        +--org.apache.batik.gvt.UpdateTracker

All Implemented Interfaces:

java.util.EventListener, GraphicsNodeChangeListener

public class UpdateTracker

extends GraphicsNodeChangeAdapter

This class tracks the changes on a GVT tree

Constructor Summary

UpdateTracker()

Method Summary

void	changeStarted(GraphicsNodeChangeEvent gnce) Recieves notification of a change to a GraphicsNode.
void	clear() Clears the tracker.
java.util.List	getDirtyAreas() Returns the list of dirty areas on GVT.
boolean	hasChanged() Tells whether the GVT tree has changed.

Methods inherited from class org.apache.batik.gvt.event.GraphicsNodeChangeAdapter

changeCompleted

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

UpdateTracker

public UpdateTracker()

Method Detail

hasChanged

public boolean hasChanged()

Tells whether the GVT tree has changed.

getDirtyAreas

public java.util.List getDirtyAreas()

Returns the list of dirty areas on GVT.

changeStarted

public void changeStarted(GraphicsNodeChangeEvent gnce)

Recieves notification of a change to a GraphicsNode.

Overrides:

changeStarted in class GraphicsNodeChangeAdapter

Parameters:

gn - The graphics node that is changing.

clear

public void clear()

Clears the tracker.