DefaultMomentum (GWT Javadoc)

java.lang.Object

com.google.gwt.touch.client.DefaultMomentum

All Implemented Interfaces:: Momentum

public class DefaultMomentum extends Object implements Momentum

Default implementation of momentum.

Nested Class Summary

Nested classes/interfaces inherited from interface com.google.gwt.touch.client.Momentum
Momentum.State
Constructor Summary

Constructors

Constructor

Description

DefaultMomentum()
Method Summary

Modifier and Type

Method

Description

Momentum.State

createState(Point initialPosition, Point initialVelocity)

Create a Momentum.State instance.

boolean

updateState(Momentum.State state)

Update the state based on the specified Momentum.State.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- DefaultMomentum
  
  public DefaultMomentum()
Method Details
- createState
  
  public Momentum.State createState(Point initialPosition, Point initialVelocity)
  
  Description copied from interface: Momentum
  
  Create a Momentum.State instance. The Momentum.State instance will be passed to Momentum.updateState(State) until the momentum is depleted.
  
  Specified by:
  
  createState in interface Momentum
  
  Parameters:
  
  initialPosition - the initial position
  
  initialVelocity - the initial velocity in pixels per millisecond
- updateState
  
  public boolean updateState(Momentum.State state)
  
  Description copied from interface: Momentum
  
  Update the state based on the specified Momentum.State. When no more momentum remains, this method should return false to stop future calls.
  
  The Momentum.State instance is created by a call to Momentum.createState(Point, Point), and the same instance if used for the duration of the momentum. This method should modify the existing state by calling Momentum.State.setPosition(Point) and/or Momentum.State.setVelocity(Point).
  
  Specified by:
  
  updateState in interface Momentum
  
  Parameters:
  
  state - the current state
  
  Returns:
  
  true to continue momentum, false if no momentum remains