edu.stanford.hci.r3.events.handlers
Class ClickHandler

java.lang.Object
  edu.stanford.hci.r3.events.EventHandler
      edu.stanford.hci.r3.events.handlers.ClickHandler

Direct Known Subclasses:

ClickAdapter

public abstract class ClickHandler
extends EventHandler

Unlike Java Swing's MouseListener, the Pen & Paper Click Handler cannot sense mouseover. Therefore, there is no analogue to mouseEntered, Exited.

This software is distributed under the BSD License.

Field Summary

protected int	clickCount Use this variable to see if there was a double click, while handing a clicked() event.
protected int	maxMillisBetweenMultipleClicks

Fields inherited from class edu.stanford.hci.r3.events.EventHandler

parentRegions

Constructor Summary

ClickHandler()

Method Summary

abstract void	clicked(PenEvent e)
void	handleEvent(PenEvent event) This method does the hard work of figuring out when a pen pressed, released, and clicked.
abstract void	pressed(PenEvent e)
abstract void	released(PenEvent e)
java.lang.String	toString()

Methods inherited from class edu.stanford.hci.r3.events.EventHandler

addParentRegion, getParentRegions, showMe

Methods inherited from class java.lang.Object

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

Field Detail

clickCount

protected int clickCount

Use this variable to see if there was a double click, while handing a clicked() event.

maxMillisBetweenMultipleClicks

protected int maxMillisBetweenMultipleClicks

Constructor Detail

ClickHandler

public ClickHandler()

Method Detail

clicked

public abstract void clicked(PenEvent e)

Parameters:

e -

handleEvent

public void handleEvent(PenEvent event)

This method does the hard work of figuring out when a pen pressed, released, and clicked. It is up to the subclass to do something interesting with it once the events are triggered. We also use the 20 ms filter heuristic that the InkCollector uses. We assume people can't click faster than 20ms.

Specified by:

handleEvent in class EventHandler

See Also:

EventHandler.handleEvent(edu.stanford.hci.r3.events.PenEvent)

pressed

public abstract void pressed(PenEvent e)

Parameters:

e -

released

public abstract void released(PenEvent e)

Parameters:

e -

toString

public java.lang.String toString()

Specified by:

toString in class EventHandler

Returns:

the Event Handler's Name