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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html lang="en">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- qquickpincharea.cpp -->
  <title>PinchEvent QML Type | Qt Quick 5.9</title>
  <link rel="stylesheet" type="text/css" href="style/offline-simple.css" />
  <script type="text/javascript">
    document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css");
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        // need to jump to different anchor first (e.g. none)
        location.hash = "#";
        setTimeout(function() {
            location.hash = anchor;
        }, 0);
    }, 0);
  </script>
</head>
<body>
<div class="header" id="qtdocheader">
  <div class="main">
    <div class="main-rounded">
      <div class="navigationbar">
        <table><tr>
<td >Qt 5.9</td><td ><a href="qtquick-index.html">Qt Quick</a></td><td ><a href="qtquick-qmlmodule.html">QML Types</a></td><td >PinchEvent QML Type</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right">Qt 5.9.5 Reference Documentation</td>
        </tr></table>
      </div>
    </div>
<div class="content">
<div class="line">
<div class="content mainContent">
<div class="sidebar">
<div class="toc">
<h3><a name="toc">Contents</a></h3>
<ul>
<li class="level1"><a href="#properties">Properties</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
</ul>
</div>
<div class="sidebar-content" id="sidebar-content"></div></div>
<h1 class="title">PinchEvent QML Type</h1>
<span class="subtitle"></span>
<!-- $$$PinchEvent-brief -->
<p>For specifying information about a pinch event <a href="#details">More...</a></p>
<!-- @@@PinchEvent -->
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> import QtQuick 2.7</td></tr></table></div><ul>
<li><a href="qml-qtquick-pinchevent-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="properties"></a>
<h2 id="properties">Properties</h2>
<ul>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#accepted-prop">accepted</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#angle-prop">angle</a></b></b> : real</li>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#center-prop">center</a></b></b> : QPointF</li>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#point1-prop">point1</a></b></b> : QPointF</li>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#point2-prop">point2</a></b></b> : QPointF</li>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#pointCount-prop">pointCount</a></b></b> : int</li>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#previousAngle-prop">previousAngle</a></b></b> : real</li>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#previousCenter-prop">previousCenter</a></b></b> : QPointF</li>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#previousScale-prop">previousScale</a></b></b> : real</li>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#rotation-prop">rotation</a></b></b> : real</li>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#scale-prop">scale</a></b></b> : real</li>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#startCenter-prop">startCenter</a></b></b> : QPointF</li>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#startPoint1-prop">startPoint1</a></b></b> : QPointF</li>
<li class="fn"><b><b><a href="qml-qtquick-pinchevent.html#startPoint2-prop">startPoint2</a></b></b> : QPointF</li>
</ul>
<!-- $$$PinchEvent-description -->
<a name="details"></a>
<h2 id="details">Detailed Description</h2>
<p><b>The <a href="qml-qtquick-pinchevent.html">PinchEvent</a> type was added in <a href="qtquick-module.html">QtQuick</a> 1.1</b></p>
<p>The <code>center</code>, <code>startCenter</code>, <code>previousCenter</code> properties provide the center position between the two touch points.</p>
<p>The <code>scale</code> and <code>previousScale</code> properties provide the scale factor.</p>
<p>The <code>angle</code>, <code>previousAngle</code> and <code>rotation</code> properties provide the angle between the two points and the amount of rotation.</p>
<p>The <code>point1</code>, <code>point2</code>, <code>startPoint1</code>, <code>startPoint2</code> properties provide the positions of the touch points.</p>
<p>The <code>accepted</code> property may be set to false in the <code>onPinchStarted</code> handler if the gesture should not be handled.</p>
<p><b>See also </b><a href="qml-qtquick-pincharea.html">PinchArea</a>.</p>
<!-- @@@PinchEvent -->
<h2>Property Documentation</h2>
<!-- $$$accepted -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="accepted-prop">
<td class="tblQmlPropNode"><p>
<a name="accepted-prop"></a><span class="name">accepted</span> : <span class="type">bool</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>Setting this property to false in the <code>PinchArea::onPinchStarted</code> handler will result in no further pinch events being generated, and the gesture ignored.</p>
</div></div><!-- @@@accepted -->
<br/>
<!-- $$$angle -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="angle-prop">
<td class="tblQmlPropNode"><p>
<a name="angle-prop"></a><span class="name">angle</span> : <span class="type">real</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>These properties hold the angle between the two touch points.</p>
<ul>
<li><code>angle</code> is the current angle between the two points in the range -180 to 180.</li>
<li><code>previousAngle</code> is the angle of the previous event.</li>
<li><code>rotation</code> is the total rotation since the pinch gesture started.</li>
</ul>
<p>When a pinch gesture is started, the rotation is <code>0.0</code>.</p>
</div></div><!-- @@@angle -->
<br/>
<!-- $$$center -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="center-prop">
<td class="tblQmlPropNode"><p>
<a name="center-prop"></a><span class="name">center</span> : <span class="type">QPointF</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>These properties hold the position of the center point between the two touch points.</p>
<ul>
<li><code>center</code> is the current center point</li>
<li><code>previousCenter</code> is the center point of the previous event.</li>
<li><code>startCenter</code> is the center point when the gesture began</li>
</ul>
</div></div><!-- @@@center -->
<br/>
<!-- $$$point1 -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="point1-prop">
<td class="tblQmlPropNode"><p>
<a name="point1-prop"></a><span class="name">point1</span> : <span class="type">QPointF</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>These properties provide the actual touch points generating the pinch.</p>
<ul>
<li><code>point1</code> and <code>point2</code> hold the current positions of the points.</li>
<li><code>startPoint1</code> and <code>startPoint2</code> hold the positions of the points when the second point was touched.</li>
</ul>
</div></div><!-- @@@point1 -->
<br/>
<!-- $$$point2 -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="point2-prop">
<td class="tblQmlPropNode"><p>
<a name="point2-prop"></a><span class="name">point2</span> : <span class="type">QPointF</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>These properties provide the actual touch points generating the pinch.</p>
<ul>
<li><code>point1</code> and <code>point2</code> hold the current positions of the points.</li>
<li><code>startPoint1</code> and <code>startPoint2</code> hold the positions of the points when the second point was touched.</li>
</ul>
</div></div><!-- @@@point2 -->
<br/>
<!-- $$$pointCount -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="pointCount-prop">
<td class="tblQmlPropNode"><p>
<a name="pointCount-prop"></a><span class="name">pointCount</span> : <span class="type">int</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>Holds the number of points currently touched. The <a href="qml-qtquick-pincharea.html">PinchArea</a> will not react until two touch points have initited a gesture, but will remain active until all touch points have been released.</p>
</div></div><!-- @@@pointCount -->
<br/>
<!-- $$$previousAngle -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="previousAngle-prop">
<td class="tblQmlPropNode"><p>
<a name="previousAngle-prop"></a><span class="name">previousAngle</span> : <span class="type">real</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>These properties hold the angle between the two touch points.</p>
<ul>
<li><code>angle</code> is the current angle between the two points in the range -180 to 180.</li>
<li><code>previousAngle</code> is the angle of the previous event.</li>
<li><code>rotation</code> is the total rotation since the pinch gesture started.</li>
</ul>
<p>When a pinch gesture is started, the rotation is <code>0.0</code>.</p>
</div></div><!-- @@@previousAngle -->
<br/>
<!-- $$$previousCenter -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="previousCenter-prop">
<td class="tblQmlPropNode"><p>
<a name="previousCenter-prop"></a><span class="name">previousCenter</span> : <span class="type">QPointF</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>These properties hold the position of the center point between the two touch points.</p>
<ul>
<li><code>center</code> is the current center point</li>
<li><code>previousCenter</code> is the center point of the previous event.</li>
<li><code>startCenter</code> is the center point when the gesture began</li>
</ul>
</div></div><!-- @@@previousCenter -->
<br/>
<!-- $$$previousScale -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="previousScale-prop">
<td class="tblQmlPropNode"><p>
<a name="previousScale-prop"></a><span class="name">previousScale</span> : <span class="type">real</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>These properties hold the scale factor determined by the change in distance between the two touch points.</p>
<ul>
<li><code>scale</code> is the current scale factor.</li>
<li><code>previousScale</code> is the scale factor of the previous event.</li>
</ul>
<p>When a pinch gesture is started, the scale is <code>1.0</code>.</p>
</div></div><!-- @@@previousScale -->
<br/>
<!-- $$$rotation -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="rotation-prop">
<td class="tblQmlPropNode"><p>
<a name="rotation-prop"></a><span class="name">rotation</span> : <span class="type">real</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>These properties hold the angle between the two touch points.</p>
<ul>
<li><code>angle</code> is the current angle between the two points in the range -180 to 180.</li>
<li><code>previousAngle</code> is the angle of the previous event.</li>
<li><code>rotation</code> is the total rotation since the pinch gesture started.</li>
</ul>
<p>When a pinch gesture is started, the rotation is <code>0.0</code>.</p>
</div></div><!-- @@@rotation -->
<br/>
<!-- $$$scale -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="scale-prop">
<td class="tblQmlPropNode"><p>
<a name="scale-prop"></a><span class="name">scale</span> : <span class="type">real</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>These properties hold the scale factor determined by the change in distance between the two touch points.</p>
<ul>
<li><code>scale</code> is the current scale factor.</li>
<li><code>previousScale</code> is the scale factor of the previous event.</li>
</ul>
<p>When a pinch gesture is started, the scale is <code>1.0</code>.</p>
</div></div><!-- @@@scale -->
<br/>
<!-- $$$startCenter -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="startCenter-prop">
<td class="tblQmlPropNode"><p>
<a name="startCenter-prop"></a><span class="name">startCenter</span> : <span class="type">QPointF</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>These properties hold the position of the center point between the two touch points.</p>
<ul>
<li><code>center</code> is the current center point</li>
<li><code>previousCenter</code> is the center point of the previous event.</li>
<li><code>startCenter</code> is the center point when the gesture began</li>
</ul>
</div></div><!-- @@@startCenter -->
<br/>
<!-- $$$startPoint1 -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="startPoint1-prop">
<td class="tblQmlPropNode"><p>
<a name="startPoint1-prop"></a><span class="name">startPoint1</span> : <span class="type">QPointF</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>These properties provide the actual touch points generating the pinch.</p>
<ul>
<li><code>point1</code> and <code>point2</code> hold the current positions of the points.</li>
<li><code>startPoint1</code> and <code>startPoint2</code> hold the positions of the points when the second point was touched.</li>
</ul>
</div></div><!-- @@@startPoint1 -->
<br/>
<!-- $$$startPoint2 -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="startPoint2-prop">
<td class="tblQmlPropNode"><p>
<a name="startPoint2-prop"></a><span class="name">startPoint2</span> : <span class="type">QPointF</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>These properties provide the actual touch points generating the pinch.</p>
<ul>
<li><code>point1</code> and <code>point2</code> hold the current positions of the points.</li>
<li><code>startPoint1</code> and <code>startPoint2</code> hold the positions of the points when the second point was touched.</li>
</ul>
</div></div><!-- @@@startPoint2 -->
<br/>
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