Package tripleplay.util

Class Tapper

java.lang.Object

react.Slot<Object>

playn.scene.Pointer.Listener

tripleplay.util.Tapper

All Implemented Interfaces:

react.Reactor.RListener, react.SignalView.Listener<Object>, react.ValueView.Listener<Object>

Direct Known Subclasses:

DoubleTapper

public class Tapper
extends Pointer.Listener

Detects taps on a layer. This is a simple implementation using a threshold distance. If the pointer is dragged less than the threshold, a call to onTap(Event.XY) is generated.

Field Summary

Fields

Modifier and Type	Field	Description
static final float	DEFAULT_TAP_DIST	Default threshold distance.
static final float	DEFAULT_TAP_DIST_SQ	Default threshold distance, set to DEFAULT_TAP_DIST squared.
float	maxTapDistSq	Square of the threshold distance for this tapper, defaults to DEFAULT_TAP_DIST_SQ.

Constructor Summary

Constructors

Constructor	Description
Tapper()

Method Summary

Modifier and Type	Method	Description
void	onCancel(Pointer.Interaction iact)
void	onDrag(Pointer.Interaction iact)
void	onEnd(Pointer.Interaction iact)
void	onStart(Pointer.Interaction iact)
void	onTap()	Called when a tap occurs.
void	onTap(Event.XY where)	Called when a tap occurs.

Methods inherited from class playn.scene.Pointer.Listener

onEmit

Methods inherited from class react.Slot

andThen, compose, filtered, onChange

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_TAP_DIST

public static final float DEFAULT_TAP_DIST

Default threshold distance.

See Also:

• Constant Field Values

DEFAULT_TAP_DIST_SQ

public static final float DEFAULT_TAP_DIST_SQ

Default threshold distance, set to DEFAULT_TAP_DIST squared.

See Also:

• Constant Field Values

maxTapDistSq

public float maxTapDistSq

Square of the threshold distance for this tapper, defaults to DEFAULT_TAP_DIST_SQ.

Constructor Details

Tapper

public Tapper()

Method Details

onTap

public void onTap()

Called when a tap occurs. This is a simpler version of onTap(Event.XY), for subclasses that don't require the event position.

onTap

public void onTap(Event.XY where)

Called when a tap occurs. By default, this just calls onTap(). Subclasses overriding needn't call super.

Parameters:

where - the pointer's end position

onStart

public void onStart(Pointer.Interaction iact)

Overrides:

onStart in class Pointer.Listener

onEnd

public void onEnd(Pointer.Interaction iact)

Overrides:

onEnd in class Pointer.Listener

onDrag

public void onDrag(Pointer.Interaction iact)

Overrides:

onDrag in class Pointer.Listener

onCancel

public void onCancel(Pointer.Interaction iact)

Overrides:

onCancel in class Pointer.Listener