com.googlecode.mgwt.dom.client.recognizer.pinch

Class PinchEvent

java.lang.Object

com.google.web.bindery.event.shared.Event<H>

com.google.gwt.event.shared.GwtEvent<PinchHandler>

com.googlecode.mgwt.dom.client.recognizer.pinch.PinchEvent

public class PinchEvent
extends com.google.gwt.event.shared.GwtEvent<PinchHandler>

A PinchEvent is fired when a user moves to finger on the display. A pinch event is fired around a center point which is calculated by looking at the two fingers producing the event.

if finger one is at x1, y1 and finger two is at x2, y2 the center point is (x1 + x2) / 2 and (y1 + y2) / 2

Author:

Daniel Kurka

Nested Class Summary

Nested classes/interfaces inherited from class com.google.gwt.event.shared.GwtEvent

com.google.gwt.event.shared.GwtEvent.Type<H>

Constructor Summary

Constructors

Constructor and Description
PinchEvent(int x, int y, double scaleFactor) Construct a pinch event

Method Summary

Modifier and Type	Method and Description
protected void	dispatch(PinchHandler handler)
com.google.gwt.event.shared.GwtEvent.Type<PinchHandler>	getAssociatedType()
double	getScaleFactor() the new scale factor that can be applied for getting a zoom effect
static com.google.gwt.event.shared.GwtEvent.Type<PinchHandler>	getType()
int	getX() The x position of the center point of the pinch.
int	getY() The y position of the center point of the pinch.

Methods inherited from class com.google.gwt.event.shared.GwtEvent

assertLive, getSource, isLive, kill, revive

Methods inherited from class com.google.web.bindery.event.shared.Event

setSource, toDebugString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

PinchEvent

public PinchEvent(int x,
                  int y,
                  double scaleFactor)

Construct a pinch event

Parameters:

x - the mid point of the pinch in x

y - the mid point of the pinch in y

scaleFactor - the new scaling factor

Method Detail

getType

public static com.google.gwt.event.shared.GwtEvent.Type<PinchHandler> getType()

getAssociatedType

public com.google.gwt.event.shared.GwtEvent.Type<PinchHandler> getAssociatedType()

Overrides:

getAssociatedType in class com.google.gwt.event.shared.GwtEvent<PinchHandler>

dispatch

protected void dispatch(PinchHandler handler)

Specified by:

dispatch in class com.google.gwt.event.shared.GwtEvent<PinchHandler>

getX

public int getX()

The x position of the center point of the pinch.

Returns:

the x position

getY

public int getY()

The y position of the center point of the pinch.

Returns:

the y position

getScaleFactor

public double getScaleFactor()

the new scale factor that can be applied for getting a zoom effect

Returns:

the scale factor