ch.claudio.pen.input
Class Event

java.lang.Object
  ch.claudio.pen.input.Event

public final class Event
extends java.lang.Object

Hold the data for an event.

Version:

$Id:$

Author:

Claudio Nieder

Copyright (C) 2007-2008 Claudio Nieder <private@claudio.ch>, CH-8610 Uster

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Field Summary

short	code Code (ABS_X etc.) as supplied by the event device
PenState	penState Pen state
long	timestamp Time stamp as supplied by the event device.
short	type Type (EV_ABS etc.) as supplied by the event device
int	value value as supplied by the event device
int	x Absolute x coordinate
int	y Absolute

Constructor Summary

Event(int lastX, int lastY, PenState lastState)
Create a new event and initialise it with the given last coordinate values.

Event(long time, short typeArg, short codeArg, int valueArg)
Creates an Event object out of an input handler event

Method Summary

Event	clone()
boolean	equals(java.lang.Object obj)
int	hashCode()
boolean	isSync() Return true if this event is a snc event EV_SYN indicating that all preceding invents since the lasy sync belong together.
long	javaTime() Return a time stamp conforming to java time.
static void	main(java.lang.String[] args) Print license.
java.lang.String	toString()
void	update(Event other) Updates this event considering the values found in the other event.

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

timestamp

public long timestamp

Time stamp as supplied by the event device. Currently this is the time since Unix epoch measured in microseconds. One should not rely on that, but simply be happy to know that it is increasing monotonically.

type

public short type

Type (EV_ABS etc.) as supplied by the event device

code

public short code

Code (ABS_X etc.) as supplied by the event device

value

public int value

value as supplied by the event device

x

public int x

Absolute x coordinate

y

public int y

Absolute

penState

public PenState penState

Pen state

Constructor Detail

Event

public Event(long time,
             short typeArg,
             short codeArg,
             int valueArg)

Creates an Event object out of an input handler event

Parameters:

time - time stamp

typeArg - event type (e.g. EV_ABS)

codeArg - event code (e.g. ABS_X)

valueArg - event value

Event

public Event(int lastX,
             int lastY,
             PenState lastState)

Create a new event and initialise it with the given last coordinate values.

Parameters:

lastX -

lastY -

lastState -

Method Detail

update

public void update(Event other)

Updates this event considering the values found in the other event.

Parameters:

other - event

isSync

public boolean isSync()

Return true if this event is a snc event EV_SYN indicating that all preceding invents since the lasy sync belong together. This is needed because changes in different axis and buttons are reported separatly, yet should later be treated as one event. Also input events are "optimized" thus one might receive more or less events between two sync events depending on which values changes.

Returns:

true id this is a sync event.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

See Also:

Object.toString()

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

See Also:

Object.hashCode()

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

See Also:

Object.equals(java.lang.Object)

javaTime

public long javaTime()

Return a time stamp conforming to java time.

Returns:

time in milliseconds

clone

public Event clone()

Overrides:

clone in class java.lang.Object

See Also:

Object.clone()

main

public static void main(java.lang.String[] args)

Print license.

Parameters:

args - ignored