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252 lines
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/kernel/qevent.cpp:1900 -->
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<title>TQTabletEvent Class</title>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQTabletEvent Class Reference</h1>
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<p>The TQTabletEvent class contains parameters that describe a Tablet
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event.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="qevent-h.html">ntqevent.h</a>></tt>
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<p>Inherits <a href="ntqevent.html">TQEvent</a>.
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<p><a href="qtabletevent-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn>enum <a href="#TabletDevice-enum"><b>TabletDevice</b></a> { NoDevice = -1, Puck, Stylus, Eraser }</li>
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<li class=fn><a href="#TQTabletEvent"><b>TQTabletEvent</b></a> ( Type t, const TQPoint & pos, const TQPoint & globalPos, int device, int pressure, int xTilt, int yTilt, const TQPair<int, int> & uId )</li>
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<li class=fn>TQTabletEvent ( const TQPoint & pos, const TQPoint & globalPos, int device, int pressure, int xTilt, int yTilt, const TQPair<int, int> & uId ) <em>(obsolete)</em></li>
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<li class=fn>int <a href="#pressure"><b>pressure</b></a> () const</li>
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<li class=fn>int <a href="#xTilt"><b>xTilt</b></a> () const</li>
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<li class=fn>int <a href="#yTilt"><b>yTilt</b></a> () const</li>
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<li class=fn>const TQPoint & <a href="#pos"><b>pos</b></a> () const</li>
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<li class=fn>const TQPoint & <a href="#globalPos"><b>globalPos</b></a> () const</li>
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<li class=fn>int <a href="#x"><b>x</b></a> () const</li>
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<li class=fn>int <a href="#y"><b>y</b></a> () const</li>
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<li class=fn>int <a href="#globalX"><b>globalX</b></a> () const</li>
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<li class=fn>int <a href="#globalY"><b>globalY</b></a> () const</li>
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<li class=fn>TabletDevice <a href="#device"><b>device</b></a> () const</li>
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<li class=fn>int <a href="#isAccepted"><b>isAccepted</b></a> () const</li>
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<li class=fn>void <a href="#accept"><b>accept</b></a> ()</li>
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<li class=fn>void <a href="#ignore"><b>ignore</b></a> ()</li>
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<li class=fn>TQPair<int, int> <a href="#uniqueId"><b>uniqueId</b></a> ()</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The TQTabletEvent class contains parameters that describe a Tablet
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event.
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<p>
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<p> Tablet Events are generated from a Wacom© tablet. Most of
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the time you will want to deal with events from the tablet as if
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they were events from a mouse, for example retrieving the position
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with <a href="#x">x</a>(), <a href="#y">y</a>(), <a href="#pos">pos</a>(), <a href="#globalX">globalX</a>(), <a href="#globalY">globalY</a>() and <a href="#globalPos">globalPos</a>(). In
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some situations you may wish to retrieve the extra information
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provided by the tablet device driver, for example, you might want
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to adjust color brightness based on pressure. TQTabletEvent allows
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you to get the <a href="#pressure">pressure</a>(), the <a href="#xTilt">xTilt</a>() and <a href="#yTilt">yTilt</a>(), as well as the
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type of device being used with <a href="#device">device</a>() (see <a href="#TabletDevice-enum">TabletDevice</a>).
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<p> A tablet event contains a special accept flag that indicates
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whether the receiver wants the event. You should call
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<a href="#accept">TQTabletEvent::accept</a>() if you handle the tablet event; otherwise
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it will be sent to the parent widget.
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<p> The <a href="ntqwidget.html#setEnabled">TQWidget::setEnabled</a>() function can be used to enable or
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disable mouse and keyboard events for a widget.
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<p> The event handler <a href="ntqwidget.html#tabletEvent">TQWidget::tabletEvent</a>() receives all three types of tablet
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events. TQt will first send a tabletEvent and then, if it is not accepted,
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it will send a mouse event. This allows applications that don't utilize
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tablets to use a tablet like a mouse while also enabling those who want to
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use both tablets and mouses differently.
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<p> <p>See also <a href="events.html">Event Classes</a>.
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<hr><h2>Member Type Documentation</h2>
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<h3 class=fn><a name="TabletDevice-enum"></a>TQTabletEvent::TabletDevice</h3>
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<p> This enum defines what type of device is generating the event.
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<ul>
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<li><tt>TQTabletEvent::NoDevice</tt> - No device, or an unknown device.
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<li><tt>TQTabletEvent::Puck</tt> - A Puck (a device that is similar to a flat mouse with
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a transparent circle with cross-hairs).
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<li><tt>TQTabletEvent::Stylus</tt> - A Stylus (the narrow end of the pen).
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<li><tt>TQTabletEvent::Eraser</tt> - An Eraser (the broad end of the pen).
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</ul>
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a name="TQTabletEvent"></a>TQTabletEvent::TQTabletEvent ( <a href="ntqevent.html#Type-enum">Type</a> t, const <a href="ntqpoint.html">TQPoint</a> & pos, const <a href="ntqpoint.html">TQPoint</a> & globalPos, int device, int pressure, int xTilt, int yTilt, const <a href="ntqpair.html">TQPair</a><int, int> & uId )
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</h3>
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Construct a tablet event of type <em>t</em>. The position of when the event occurred is given
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int <em>pos</em> and <em>globalPos</em>. <em>device</em> contains the <a href="#TabletDevice-enum">device type</a>,
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<em>pressure</em> contains the pressure exerted on the <em>device</em>, <em>xTilt</em> and <em>yTilt</em> contain
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<em>device</em>'s degree of tilt from the X and Y axis respectively. The <em>uId</em> contains an
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event id.
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<p> On Irix, <em>globalPos</em> will contain the high-resolution coordinates received from the
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tablet device driver, instead of from the windowing system.
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<p> <p>See also <a href="#pos">pos</a>(), <a href="#globalPos">globalPos</a>(), <a href="#device">device</a>(), <a href="#pressure">pressure</a>(), <a href="#xTilt">xTilt</a>(), and <a href="#yTilt">yTilt</a>().
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<h3 class=fn><a name="TQTabletEvent-2"></a>TQTabletEvent::TQTabletEvent ( const <a href="ntqpoint.html">TQPoint</a> & pos, const <a href="ntqpoint.html">TQPoint</a> & globalPos, int device, int pressure, int xTilt, int yTilt, const <a href="ntqpair.html">TQPair</a><int, int> & uId )
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</h3>
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<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
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<p>
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<p> Constructs a tablet event object. The position when the event
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occurred is is given in <em>pos</em> and <em>globalPos</em>. <em>device</em>
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contains the <a href="#TabletDevice-enum">device type</a>, <em>pressure</em>
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contains the pressure exerted on the <em>device</em>, <em>xTilt</em> and <em>yTilt</em> contain the <em>device</em>'s degrees of tilt from the X and Y
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axis respectively. The <em>uId</em> contains an event id.
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<p> On Irix, <em>globalPos</em> will contain the high-resolution coordinates
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received from the tablet device driver, instead of from the
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windowing system.
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<p> <p>See also <a href="#pos">pos</a>(), <a href="#globalPos">globalPos</a>(), <a href="#device">device</a>(), <a href="#pressure">pressure</a>(), <a href="#xTilt">xTilt</a>(), and <a href="#yTilt">yTilt</a>().
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<h3 class=fn>void <a name="accept"></a>TQTabletEvent::accept ()
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</h3>
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<p> Sets the accept flag of the tablet event object.
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<p> Setting the accept flag indicates that the receiver of the event
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wants the tablet event. Unwanted tablet events are sent to the
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parent widget.
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<p> The accept flag is set by default.
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<p> <p>See also <a href="#ignore">ignore</a>().
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<h3 class=fn><a href="qtabletevent.html#TabletDevice-enum">TabletDevice</a> <a name="device"></a>TQTabletEvent::device () const
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</h3>
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<p> Returns the type of device that generated the event. Useful if you
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want one end of the pen to do something different than the other.
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<p> <p>See also <a href="#TabletDevice-enum">TabletDevice</a>.
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<h3 class=fn>const <a href="ntqpoint.html">TQPoint</a> & <a name="globalPos"></a>TQTabletEvent::globalPos () const
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</h3>
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<p> Returns the global position of the device <em>at the time of the event</em>. This is important on asynchronous windows systems like X11;
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whenever you move your widgets around in response to mouse events,
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<a href="#globalPos">globalPos</a>() can differ significantly from the current position
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<a href="ntqcursor.html#pos">TQCursor::pos</a>().
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<p> <p>See also <a href="#globalX">globalX</a>() and <a href="#globalY">globalY</a>().
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<h3 class=fn>int <a name="globalX"></a>TQTabletEvent::globalX () const
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</h3>
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<p> Returns the global x-position of the mouse pointer at the time of
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the event.
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<p> <p>See also <a href="#globalY">globalY</a>() and <a href="#globalPos">globalPos</a>().
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<h3 class=fn>int <a name="globalY"></a>TQTabletEvent::globalY () const
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</h3>
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<p> Returns the global y-position of the mouse pointer at the time of
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the event.
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<p> <p>See also <a href="#globalX">globalX</a>() and <a href="#globalPos">globalPos</a>().
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<h3 class=fn>void <a name="ignore"></a>TQTabletEvent::ignore ()
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</h3>
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<p> Clears the accept flag parameter of the tablet event object.
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<p> Clearing the accept flag indicates that the event receiver does
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not want the tablet event. Unwanted tablet events are sent to the
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parent widget.
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<p> The accept flag is set by default.
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<p> <p>See also <a href="#accept">accept</a>().
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<h3 class=fn>int <a name="isAccepted"></a>TQTabletEvent::isAccepted () const
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</h3>
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<p> Returns TRUE if the receiver of the event handles the tablet
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event; otherwise returns FALSE.
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<h3 class=fn>const <a href="ntqpoint.html">TQPoint</a> & <a name="pos"></a>TQTabletEvent::pos () const
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</h3>
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<p> Returns the position of the device, relative to the widget that
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received the event.
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<p> If you move widgets around in response to mouse events, use
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<a href="#globalPos">globalPos</a>() instead of this function.
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<p> <p>See also <a href="#x">x</a>(), <a href="#y">y</a>(), and <a href="#globalPos">globalPos</a>().
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<h3 class=fn>int <a name="pressure"></a>TQTabletEvent::pressure () const
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</h3>
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<p> Returns the pressure that is exerted on the device. This number is
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a value from 0 (no pressure) to 255 (maximum pressure). The
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pressure is always scaled to be within this range no matter how
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many pressure levels the underlying hardware supports.
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<h3 class=fn><a href="ntqpair.html">TQPair</a><int, int> <a name="uniqueId"></a>TQTabletEvent::uniqueId ()
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</h3>
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<p> Returns a unique ID for the current device. It is possible to
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generate a unique ID for any Wacom© device. This makes it
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possible to differentiate between multiple devices being used at
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the same time on the tablet. The <tt>first</tt> member contains a value
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for the type, the <tt>second</tt> member contains a physical ID obtained
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from the device. Each combination of these values is unique. Note:
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for different platforms, the <tt>first</tt> value is different due to
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different driver implementations.
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<h3 class=fn>int <a name="x"></a>TQTabletEvent::x () const
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</h3>
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<p> Returns the x-position of the device, relative to the widget that
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received the event.
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<p> <p>See also <a href="#y">y</a>() and <a href="#pos">pos</a>().
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<h3 class=fn>int <a name="xTilt"></a>TQTabletEvent::xTilt () const
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</h3>
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<p> Returns the difference from the perpendicular in the X Axis.
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Positive values are towards the tablet's physical right. The angle
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is in the range -60 to +60 degrees.
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<p> <p>See also <a href="#yTilt">yTilt</a>().
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<h3 class=fn>int <a name="y"></a>TQTabletEvent::y () const
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</h3>
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<p> Returns the y-position of the device, relative to the widget that
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received the event.
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<p> <p>See also <a href="#x">x</a>() and <a href="#pos">pos</a>().
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<h3 class=fn>int <a name="yTilt"></a>TQTabletEvent::yTilt () const
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</h3>
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<p> Returns the difference from the perpendicular in the Y Axis.
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Positive values are towards the bottom of the tablet. The angle is
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within the range -60 to +60 degrees.
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<p> <p>See also <a href="#xTilt">xTilt</a>().
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<!-- eof -->
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<hr><p>
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This file is part of the <a href="index.html">TQt toolkit</a>.
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Copyright © 1995-2007
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<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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<table width=100% cellspacing=0 border=0><tr>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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</table></div></address></body>
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