org.geotoolkit.gui.swing.event
Class ZoomChangeEvent

Object
  EventObject
      ZoomChangeEvent

All Implemented Interfaces:

Serializable

public class ZoomChangeEvent
extends EventObject

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

Since:

2.0

Version:

3.00

Author:

Martin Desruisseaux (IRD)

See Also:

Serialized Form

Module:

display/geotk-widgets-swing (download)

View source code for this class

Field Summary

Fields inherited from class EventObject

source

Constructor Summary

ZoomChangeEvent(Object source, AffineTransform change)
Constructs a new event.

Method Summary

AffineTransform

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

Methods inherited from class EventObject

getSource, toString

Methods inherited from class Object

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

Constructor Detail

ZoomChangeEvent

public ZoomChangeEvent(Object source,
                       AffineTransform change)

Constructs a new event. If oldZoom and newZoom 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 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!

Returns:

The zoom change as an affine transform (not cloned).