com.datecs.api.universalreader
Class TouchEvent

java.lang.Object
  com.datecs.api.universalreader.TouchEvent

public final class TouchEvent
extends java.lang.Object

This class is used to report single touch event from touch screen peripherals.

Field Summary

static int	ACTION_DOWN A pressed gesture has started, the touch event contains a valid location of event.
static int	ACTION_UP A pressed gesture has finished, the touch event does not contains a valid location.

Constructor Summary

TouchEvent(int x, int y, int pressure, int elapse)
Constructs a TouchEvent, filling in all of the basic values that define the touch.

Method Summary

int	getAction() Gets the kind of action being performed.
int	getElapse() Gets the time between this event and the previous one.
int	getPressure() Gets the current pressure of this event.
int	getX() Gets the X coordinate of this event.
int	getY() Gets the Y coordinate of this event.
static TouchEvent[]	obtainArray(byte[] data) Constructs a new instance of this class from a given byte array.
java.lang.String	toString() Returns the string representation of object.

Methods inherited from class java.lang.Object

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

Field Detail

ACTION_DOWN

public static final int ACTION_DOWN

A pressed gesture has started, the touch event contains a valid location of event.

See Also:

Constant Field Values

ACTION_UP

public static final int ACTION_UP

A pressed gesture has finished, the touch event does not contains a valid location.

See Also:

Constant Field Values

Constructor Detail

TouchEvent

public TouchEvent(int x,
                  int y,
                  int pressure,
                  int elapse)

Constructs a TouchEvent, filling in all of the basic values that define the touch.

Parameters:

x - the X coordinate of this event.

y - the Y coordinate of this event.

pressure - the current pressure of this event.

elapse - the time (in ms) between this event and the previous one.

Method Detail

obtainArray

public static TouchEvent[] obtainArray(byte[] data)

Constructs a new instance of this class from a given byte array.

Every touch event in array must be defined in block of 4 bytes, in format: X coordinate, Y coordinate, pressure, elapse (4 ms units).

If data is null, a NullPointerException is thrown.

If (data.length % 4) != 0, a IllegalArgumentException is thrown.

Parameters:

data - the byte array contains blocks with touch events.

Returns:

an instance of TouchEvent[].

getX

public int getX()

Gets the X coordinate of this event.

Returns:

the X coordinate of this event.

getY

public int getY()

Gets the Y coordinate of this event.

Returns:

the X coordinate of this event.

getPressure

public int getPressure()

Gets the current pressure of this event.

Returns:

the current pressure of this event.

getElapse

public int getElapse()

Gets the time between this event and the previous one.

Returns:

the time (in milliseconds) between this event and the previous one. If the time is greater then 1 seconds, -1 is returned.

getAction

public int getAction()

Gets the kind of action being performed.

Returns:

the kind of action being performed - one of either ACTION_DOWN or ACTION_UP.

toString

public java.lang.String toString()

Returns the string representation of object.

Overrides:

toString in class java.lang.Object