org.geotools.gui.swing.event
Class ZoomChangeEvent

java.lang.Object
  java.util.EventObject
      org.geotools.gui.swing.event.ZoomChangeEvent

All Implemented Interfaces:

java.io.Serializable

public class ZoomChangeEvent

extends java.util.EventObject

An event which indicates that a zoom occurred in a component. This event is usually fired by ZoomPane.

Since:

2.0

Version:

$Id: ZoomChangeEvent.java 17672 2006-01-19 00:25:55Z desruisseaux $

Author:

Martin Desruisseaux

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.EventObject

source

Constructor Summary

ZoomChangeEvent(java.lang.Object source, java.awt.geom.AffineTransform change)
Constructs a new event.

Method Summary

java.awt.geom.AffineTransform

getChange() Returns the affine transform indicating the zoom change.

Methods inherited from class java.util.EventObject

getSource, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ZoomChangeEvent

public ZoomChangeEvent(java.lang.Object source,
                       java.awt.geom.AffineTransform change)

Constructs a new event. If and are the affine transforms before and after the change respectively, then the following relation must hold (within the limits of rounding error): newZoom = oldZoom.concatenate(change)

Parameters:

source - The event source (usually a ZoomPane).

change - An affine transform indicating the zoom change.

Method Detail

getChange

public java.awt.geom.AffineTransform getChange()

Returns the affine transform indicating the zoom change. Note: for performance reasons, this method does not clone the returned transform. Do not change!