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<h1 class="title">QML GestureArea Element</h1>
<span class="subtitle"></span>
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<p>The GestureArea item enables simple gesture handling. <a href="#details">More...</a></p>
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<p>Inherits <a href="qml-item.html">Item</a></p>
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<h2>Detailed Description</h2>
<p>A GestureArea is like a <a href="qml-mousearea.html">MouseArea</a>, but it has signals for gesture events.</p>
<p><b>Warning:</b> Elements in the Qt.labs module are not guaranteed to remain compatible in future versions.</p>
<p><b>Warning:</b> GestureArea is an experimental element whose development has been discontinued. <a href="qml-pincharea.html">PinchArea</a> is available in QtQuick 1.1 and handles two finger gesture input.</p>
<p><b>Note:</b> This element is only functional on devices with touch input.</p>
<pre class="qml"> import Qt.labs.gestures 1.0
<span class="type">GestureArea</span> {
<span class="name">anchors</span>.fill: <span class="name">parent</span>
<span class="comment">// onPan: ... gesture.acceleration ...</span>
<span class="comment">// onPinch: ... gesture.rotationAngle ...</span>
<span class="comment">// onSwipe: ...</span>
<span class="comment">// onTapAndHold: ...</span>
<span class="comment">// onTap: ...</span>
<span class="comment">// onGesture: ...</span>
}</pre>
<p>Each signal has a <i>gesture</i> parameter that has the properties of the gesture.</p>
<table class="generic">
<thead><tr class="qt-style"><th >Signal</th><th >Type</th><th >Property</th><th >Description</th></tr></thead>
<tr valign="top" class="odd"><td >onTap</td><td >point</td><td >position</td><td >the position of the tap</td></tr>
<tr valign="top" class="even"><td >onTapAndHold</td><td >point</td><td >position</td><td >the position of the tap</td></tr>
<tr valign="top" class="odd"><td >onPan</td><td >real</td><td >acceleration</td><td >the acceleration of the pan</td></tr>
<tr valign="top" class="even"><td >onPan</td><td >point</td><td >delta</td><td >the offset from the previous input position to the current input</td></tr>
<tr valign="top" class="odd"><td >onPan</td><td >point</td><td >offset</td><td >the total offset from the first input position to the current input position</td></tr>
<tr valign="top" class="even"><td >onPan</td><td >point</td><td >lastOffset</td><td >the previous value of offset</td></tr>
<tr valign="top" class="odd"><td >onPinch</td><td >point</td><td >centerPoint</td><td >the midpoint between the two input points</td></tr>
<tr valign="top" class="even"><td >onPinch</td><td >point</td><td >lastCenterPoint</td><td >the previous value of centerPoint</td></tr>
<tr valign="top" class="odd"><td >onPinch</td><td >point</td><td >startCenterPoint</td><td >the first value of centerPoint</td></tr>
<tr valign="top" class="even"><td >onPinch</td><td >real</td><td >rotationAngle</td><td >the angle covered by the gesture motion</td></tr>
<tr valign="top" class="odd"><td >onPinch</td><td >real</td><td >lastRotationAngle</td><td >the previous value of rotationAngle</td></tr>
<tr valign="top" class="even"><td >onPinch</td><td >real</td><td >totalRotationAngle</td><td >the complete angle covered by the gesture</td></tr>
<tr valign="top" class="odd"><td >onPinch</td><td >real</td><td >scaleFactor</td><td >the change in distance between the two input points</td></tr>
<tr valign="top" class="even"><td >onPinch</td><td >real</td><td >lastScaleFactor</td><td >the previous value of scaleFactor</td></tr>
<tr valign="top" class="odd"><td >onPinch</td><td >real</td><td >totalScaleFactor</td><td >the complete scale factor of the gesture</td></tr>
<tr valign="top" class="even"><td >onSwipe</td><td >real</td><td >swipeAngle</td><td >the angle of the swipe</td></tr>
</table>
<p>Custom gestures, handled by onGesture, will have custom properties.</p>
<p>GestureArea is an invisible item: it is never painted.</p>
<p><b>See also </b><a href="qml-mousearea.html">MouseArea</a>.</p>
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