Package org.jfree.chart

Class MouseWheelHandler

java.lang.Object

org.jfree.chart.MouseWheelHandler

All Implemented Interfaces:

MouseWheelListener, Serializable, EventListener

public class MouseWheelHandler
extends Object
implements MouseWheelListener, Serializable

A class that handles mouse wheel events for the ChartPanel class.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
MouseWheelHandler(ChartPanel chartPanel)	Creates a new instance for the specified chart panel.

Method Summary

Modifier and Type	Method	Description
double	getZoomFactor()	Returns the current zoom factor.
void	mouseWheelMoved(MouseWheelEvent e)	Handles a mouse wheel event from the underlying chart panel.
void	setZoomFactor(double zoomFactor)	Sets the zoom factor.

Methods inherited from class java.lang.Object

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

Constructor Details

MouseWheelHandler

public MouseWheelHandler(ChartPanel chartPanel)

Creates a new instance for the specified chart panel.

Parameters:

chartPanel - the chart panel (null not permitted).

Method Details

getZoomFactor

public double getZoomFactor()

Returns the current zoom factor. The default value is 0.10 (ten percent).

Returns:

The zoom factor.

See Also:

• setZoomFactor(double)

setZoomFactor

public void setZoomFactor(double zoomFactor)

Sets the zoom factor.

Parameters:

zoomFactor - the zoom factor.

See Also:

• getZoomFactor()

mouseWheelMoved

public void mouseWheelMoved(MouseWheelEvent e)

Handles a mouse wheel event from the underlying chart panel.

Specified by:

mouseWheelMoved in interface MouseWheelListener

Parameters:

e - the event.