Package com.luciad.controllers

Class HoverEventHandler

java.lang.Object

com.luciad.controllers.HoverEventHandler

All Implemented Interfaces:

AutoCloseable

public final class HoverEventHandler
extends Object
implements AutoCloseable

Handler that translates hover gesture events to a hovering operation.

Features under the cursor will have their FeatureState#hover() state updated.

Constructor Summary

Constructors

Constructor	Description
HoverEventHandler()	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
void	close()
protected void	finalize()
long	getMargin()	Returns the margin used to detect if a feature is considered under the cursor or not.
EventResult	onMouseMoveEvent(MouseMoveEvent moveEvent, Map map)	Changes the FeatureState#hover() state of features located under the mouse position.
void	setMargin(long margin)	Sets the margin used to detect if a feature is considered under the cursor or not.

Methods inherited from class java.lang.Object

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

Constructor Details

HoverEventHandler

public HoverEventHandler()

Creates a new instance.

Method Details

finalize

protected void finalize()

Overrides:

finalize in class Object

close

public void close()

Specified by:

close in interface AutoCloseable

onMouseMoveEvent

@NotNull
public EventResult onMouseMoveEvent(@NotNull
 MouseMoveEvent moveEvent,
 @NotNull
 Map map)
                             throws NullPointerException

Changes the FeatureState#hover() state of features located under the mouse position.

Parameters:

moveEvent - a move event. Cannot be null.

map - the map. Cannot be null.

Returns:

whether the move event is consumed or not. Always EventResult#Consumed.

Throws:

NullPointerException - when passing null for the map or the event.

See Also:

• HoverEventHandler#setMargin for the margin applied to the mouse position to detect which features are considered.

setMargin

public void setMargin(long margin)

Sets the margin used to detect if a feature is considered under the cursor or not.

This margin is expressed in device independent pixels. By default, the margin is 5 pixels.

Parameters:

margin - the margin, defined in device independent pixels.

getMargin

public long getMargin()

Returns the margin used to detect if a feature is considered under the cursor or not.

The default value is 5 pixels.

Returns:

the margin used to detect if a feature is considered under the cursor or not.