QTabletEvent man page on Peanut
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QTabletEvent(3qt) QTabletEvent(3qt)
NAME
QTabletEvent - Parameters that describe a Tablet event
SYNOPSIS
#include <qevent.h>
Inherits QEvent.
Public Members
enum TabletDevice { NoDevice = -1, Puck, Stylus, Eraser }
QTabletEvent ( Type t, const QPoint & pos, const QPoint & globalPos,
int device, int pressure, int xTilt, int yTilt, const QPair<int,
int> & uId )
QTabletEvent ( const QPoint & pos, const QPoint & globalPos, int
device, int pressure, int xTilt, int yTilt, const QPair<int, int> &
uId ) (obsolete)
int pressure () const
int xTilt () const
int yTilt () const
const QPoint & pos () const
const QPoint & globalPos () const
int x () const
int y () const
int globalX () const
int globalY () const
TabletDevice device () const
int isAccepted () const
void accept ()
void ignore ()
QPair<int, int> uniqueId ()
DESCRIPTION
The QTabletEvent class contains parameters that describe a Tablet
event.
Tablet Events are generated from a Wacom© tablet. Most of the time
you will want to deal with events from the tablet as if they were
events from a mouse, for example retrieving the position with x(), y(),
pos(), globalX(), globalY() and globalPos(). In some situations you may
wish to retrieve the extra information provided by the tablet device
driver, for example, you might want to adjust color brightness based on
pressure. QTabletEvent allows you to get the pressure(), the xTilt()
and yTilt(), as well as the type of device being used with device()
(see TabletDevice).
A tablet event contains a special accept flag that indicates whether
the receiver wants the event. You should call QTabletEvent::accept() if
you handle the tablet event; otherwise it will be sent to the parent
widget.
The QWidget::setEnabled() function can be used to enable or disable
mouse and keyboard events for a widget.
The event handler QWidget::tabletEvent() receives all three types of
tablet events. Qt will first send a tabletEvent and then, if it is not
accepted, it will send a mouse event. This allows applications that
don't utilize tablets to use a tablet like a mouse while also enabling
those who want to use both tablets and mouses differently.
See also Event Classes.
Member Type Documentation
QTabletEvent::TabletDevice
This enum defines what type of device is generating the event.
QTabletEvent::NoDevice - No device, or an unknown device.
QTabletEvent::Puck - A Puck (a device that is similar to a flat mouse
with a transparent circle with cross-hairs).
QTabletEvent::Stylus - A Stylus (the narrow end of the pen).
QTabletEvent::Eraser - An Eraser (the broad end of the pen).
MEMBER FUNCTION DOCUMENTATION
QTabletEvent::QTabletEvent ( Type t, const QPoint & pos, const QPoint &
globalPos, int device, int pressure, int xTilt, int yTilt, const
QPair<int, int> & uId )
Construct a tablet event of type t. The position of when the event
occurred is given int pos and globalPos. device contains the device
type, pressure contains the pressure exerted on the device, xTilt and
yTilt contain device's degree of tilt from the X and Y axis
respectively. The uId contains an event id.
On Irix, globalPos will contain the high-resolution coordinates
received from the tablet device driver, instead of from the windowing
system.
See also pos(), globalPos(), device(), pressure(), xTilt(), and
yTilt().
QTabletEvent::QTabletEvent ( const QPoint & pos, const QPoint & globalPos, int
device, int pressure, int xTilt, int yTilt, const QPair<int, int> & uId
)
This function is obsolete. It is provided to keep old source working.
We strongly advise against using it in new code.
Constructs a tablet event object. The position when the event occurred
is is given in pos and globalPos. device contains the device type,
pressure contains the pressure exerted on the device, xTilt and yTilt
contain the device's degrees of tilt from the X and Y axis
respectively. The uId contains an event id.
On Irix, globalPos will contain the high-resolution coordinates
received from the tablet device driver, instead of from the windowing
system.
See also pos(), globalPos(), device(), pressure(), xTilt(), and
yTilt().
void QTabletEvent::accept ()
Sets the accept flag of the tablet event object.
Setting the accept flag indicates that the receiver of the event wants
the tablet event. Unwanted tablet events are sent to the parent widget.
The accept flag is set by default.
See also ignore().
TabletDevice QTabletEvent::device () const
Returns the type of device that generated the event. Useful if you want
one end of the pen to do something different than the other.
See also TabletDevice.
const QPoint & QTabletEvent::globalPos () const
Returns the global position of the device at the time of the event.
This is important on asynchronous windows systems like X11; whenever
you move your widgets around in response to mouse events, globalPos()
can differ significantly from the current position QCursor::pos().
See also globalX() and globalY().
int QTabletEvent::globalX () const
Returns the global x-position of the mouse pointer at the time of the
event.
See also globalY() and globalPos().
int QTabletEvent::globalY () const
Returns the global y-position of the mouse pointer at the time of the
event.
See also globalX() and globalPos().
void QTabletEvent::ignore ()
Clears the accept flag parameter of the tablet event object.
Clearing the accept flag indicates that the event receiver does not
want the tablet event. Unwanted tablet events are sent to the parent
widget.
The accept flag is set by default.
See also accept().
int QTabletEvent::isAccepted () const
Returns TRUE if the receiver of the event handles the tablet event;
otherwise returns FALSE.
const QPoint & QTabletEvent::pos () const
Returns the position of the device, relative to the widget that
received the event.
If you move widgets around in response to mouse events, use globalPos()
instead of this function.
See also x(), y(), and globalPos().
int QTabletEvent::pressure () const
Returns the pressure that is exerted on the device. This number is a
value from 0 (no pressure) to 255 (maximum pressure). The pressure is
always scaled to be within this range no matter how many pressure
levels the underlying hardware supports.
QPair<int, int> QTabletEvent::uniqueId ()
Returns a unique ID for the current device. It is possible to generate
a unique ID for any Wacom© device. This makes it possible to
differentiate between multiple devices being used at the same time on
the tablet. The first member contains a value for the type, the second
member contains a physical ID obtained from the device. Each
combination of these values is unique. Note: for different platforms,
the first value is different due to different driver implementations.
int QTabletEvent::x () const
Returns the x-position of the device, relative to the widget that
received the event.
See also y() and pos().
int QTabletEvent::xTilt () const
Returns the difference from the perpendicular in the X Axis. Positive
values are towards the tablet's physical right. The angle is in the
range -60 to +60 degrees.
See also yTilt().
int QTabletEvent::y () const
Returns the y-position of the device, relative to the widget that
received the event.
See also x() and pos().
int QTabletEvent::yTilt () const
Returns the difference from the perpendicular in the Y Axis. Positive
values are towards the bottom of the tablet. The angle is within the
range -60 to +60 degrees.
See also xTilt().
SEE ALSO
http://doc.trolltech.com/qtabletevent.html
http://www.trolltech.com/faq/tech.html
COPYRIGHT
Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com. See the
license file included in the distribution for a complete license
statement.
AUTHOR
Generated automatically from the source code.
BUGS
If you find a bug in Qt, please report it as described in
http://doc.trolltech.com/bughowto.html. Good bug reports help us to
help you. Thank you.
The definitive Qt documentation is provided in HTML format; it is
located at $QTDIR/doc/html and can be read using Qt Assistant or with a
web browser. This man page is provided as a convenience for those users
who prefer man pages, although this format is not officially supported
by Trolltech.
If you find errors in this manual page, please report them to qt-
bugs@trolltech.com. Please include the name of the manual page
(qtabletevent.3qt) and the Qt version (3.3.8).
Trolltech AS 2 February 2007 QTabletEvent(3qt)
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