<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- qevent.cpp -->
<title>QScrollPrepareEvent Class | Qt GUI 5.12.6</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");
// loading style sheet breaks anchors that were jumped to before
// so force jumping to anchor again
setTimeout(function() {
var anchor = location.hash;
// 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 5.12</td><td ><a href="qtgui-index.html">Qt GUI</a></td><td ><a href="qtgui-module.html">C++ Classes</a></td><td >QScrollPrepareEvent</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtgui-index.html">Qt 5.12.6 Reference Documentation</a></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="#public-functions">Public Functions</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">QScrollPrepareEvent Class</h1>
<!-- $$$QScrollPrepareEvent-brief -->
<p>The <a href="qscrollprepareevent.html">QScrollPrepareEvent</a> class is sent in preparation of scrolling. <a href="#details">More...</a></p>
<!-- @@@QScrollPrepareEvent -->
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign"> <span class="preprocessor">#include <QScrollPrepareEvent></span>
</td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += gui</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign"> Qt 4.8</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Inherits:</td><td class="memItemRight bottomAlign"> <a href="../qtcore/qevent.html">QEvent</a></td></tr></table></div><ul>
<li><a href="qscrollprepareevent-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="public-functions"></a>
<h2 id="public-functions">Public Functions</h2>
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qscrollprepareevent.html#QScrollPrepareEvent">QScrollPrepareEvent</a></b>(const QPointF &<i>startPos</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qscrollprepareevent.html#dtor.QScrollPrepareEvent">~QScrollPrepareEvent</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QPointF </td><td class="memItemRight bottomAlign"><b><a href="qscrollprepareevent.html#contentPos">contentPos</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QRectF </td><td class="memItemRight bottomAlign"><b><a href="qscrollprepareevent.html#contentPosRange">contentPosRange</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qscrollprepareevent.html#setContentPos">setContentPos</a></b>(const QPointF &<i>pos</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qscrollprepareevent.html#setContentPosRange">setContentPosRange</a></b>(const QRectF &<i>rect</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qscrollprepareevent.html#setViewportSize">setViewportSize</a></b>(const QSizeF &<i>size</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QPointF </td><td class="memItemRight bottomAlign"><b><a href="qscrollprepareevent.html#startPos">startPos</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QSizeF </td><td class="memItemRight bottomAlign"><b><a href="qscrollprepareevent.html#viewportSize">viewportSize</a></b>() const</td></tr>
</table></div>
<ul>
<li class="fn">6 public functions inherited from <a href="../qtcore/qevent.html#public-functions">QEvent</a></li>
</ul>
<h3>Additional Inherited Members</h3>
<ul>
<li class="fn">1 property inherited from <a href="../qtcore/qevent.html#properties">QEvent</a></li>
<li class="fn">1 static public member inherited from <a href="../qtcore/qevent.html#static-public-members">QEvent</a></li>
</ul>
<a name="details"></a>
<!-- $$$QScrollPrepareEvent-description -->
<div class="descr">
<h2 id="details">Detailed Description</h2>
<p>The <a href="qscrollprepareevent.html">QScrollPrepareEvent</a> class is sent in preparation of scrolling.</p>
<p>The scroll prepare event is sent before scrolling (usually by <a href="../qtwidgets/qscroller.html">QScroller</a>) is started. The object receiving this event should set <a href="qscrollprepareevent.html#viewportSize">viewportSize</a>, maxContentPos and <a href="qscrollprepareevent.html#contentPos">contentPos</a>. It also should accept this event to indicate that scrolling should be started.</p>
<p>It is not guaranteed that a <a href="qscrollevent.html">QScrollEvent</a> will be sent after an acceepted <a href="qscrollprepareevent.html">QScrollPrepareEvent</a>, e.g. in a case where the maximum content position is (0,0).</p>
</div>
<p><b>See also </b><a href="qscrollevent.html">QScrollEvent</a> and <a href="../qtwidgets/qscroller.html">QScroller</a>.</p>
<!-- @@@QScrollPrepareEvent -->
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$QScrollPrepareEvent[overload1]$$$QScrollPrepareEventconstQPointF& -->
<h3 class="fn" id="QScrollPrepareEvent"><a name="QScrollPrepareEvent"></a>QScrollPrepareEvent::<span class="name">QScrollPrepareEvent</span>(const <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> &<i>startPos</i>)</h3>
<p>Creates new <a href="qscrollprepareevent.html">QScrollPrepareEvent</a> The <i>startPos</i> is the position of a touch or mouse event that started the scrolling.</p>
<!-- @@@QScrollPrepareEvent -->
<!-- $$$~QScrollPrepareEvent[overload1]$$$~QScrollPrepareEvent -->
<h3 class="fn" id="dtor.QScrollPrepareEvent"><a name="dtor.QScrollPrepareEvent"></a><code>[virtual] </code>QScrollPrepareEvent::<span class="name">~QScrollPrepareEvent</span>()</h3>
<p>Destroys <a href="qscrollevent.html">QScrollEvent</a>.</p>
<!-- @@@~QScrollPrepareEvent -->
<!-- $$$contentPos[overload1]$$$contentPos -->
<h3 class="fn" id="contentPos"><a name="contentPos"></a><span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> QScrollPrepareEvent::<span class="name">contentPos</span>() const</h3>
<p>Returns the current position of the content as set by <a href="qscrollprepareevent.html#setContentPos">setContentPos</a>.</p>
<p><b>See also </b><a href="qscrollprepareevent.html#setContentPos">setContentPos</a>().</p>
<!-- @@@contentPos -->
<!-- $$$contentPosRange[overload1]$$$contentPosRange -->
<h3 class="fn" id="contentPosRange"><a name="contentPosRange"></a><span class="type"><a href="../qtcore/qrectf.html">QRectF</a></span> QScrollPrepareEvent::<span class="name">contentPosRange</span>() const</h3>
<p>Returns the range of coordinates for the content as set by <a href="qscrollprepareevent.html#setContentPosRange">setContentPosRange</a>().</p>
<p><b>See also </b><a href="qscrollprepareevent.html#setContentPosRange">setContentPosRange</a>().</p>
<!-- @@@contentPosRange -->
<!-- $$$setContentPos[overload1]$$$setContentPosconstQPointF& -->
<h3 class="fn" id="setContentPos"><a name="setContentPos"></a><span class="type">void</span> QScrollPrepareEvent::<span class="name">setContentPos</span>(const <span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> &<i>pos</i>)</h3>
<p>Sets the current content position to <i>pos</i>.</p>
<p><b>See also </b><a href="qscrollprepareevent.html#contentPos">contentPos</a>().</p>
<!-- @@@setContentPos -->
<!-- $$$setContentPosRange[overload1]$$$setContentPosRangeconstQRectF& -->
<h3 class="fn" id="setContentPosRange"><a name="setContentPosRange"></a><span class="type">void</span> QScrollPrepareEvent::<span class="name">setContentPosRange</span>(const <span class="type"><a href="../qtcore/qrectf.html">QRectF</a></span> &<i>rect</i>)</h3>
<p>Sets the range of content coordinates to <i>rect</i>.</p>
<p><b>See also </b><a href="qscrollprepareevent.html#contentPosRange">contentPosRange</a>().</p>
<!-- @@@setContentPosRange -->
<!-- $$$setViewportSize[overload1]$$$setViewportSizeconstQSizeF& -->
<h3 class="fn" id="setViewportSize"><a name="setViewportSize"></a><span class="type">void</span> QScrollPrepareEvent::<span class="name">setViewportSize</span>(const <span class="type"><a href="../qtcore/qsizef.html">QSizeF</a></span> &<i>size</i>)</h3>
<p>Sets the size of the area that is to be scrolled to <i>size</i>.</p>
<p><b>See also </b><a href="qscrollprepareevent.html#viewportSize">viewportSize</a>().</p>
<!-- @@@setViewportSize -->
<!-- $$$startPos[overload1]$$$startPos -->
<h3 class="fn" id="startPos"><a name="startPos"></a><span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> QScrollPrepareEvent::<span class="name">startPos</span>() const</h3>
<p>Returns the position of the touch or mouse event that started the scrolling.</p>
<!-- @@@startPos -->
<!-- $$$viewportSize[overload1]$$$viewportSize -->
<h3 class="fn" id="viewportSize"><a name="viewportSize"></a><span class="type"><a href="../qtcore/qsizef.html">QSizeF</a></span> QScrollPrepareEvent::<span class="name">viewportSize</span>() const</h3>
<p>Returns size of the area that is to be scrolled as set by <a href="qscrollprepareevent.html#setViewportSize">setViewportSize</a></p>
<p><b>See also </b><a href="qscrollprepareevent.html#setViewportSize">setViewportSize</a>().</p>
<!-- @@@viewportSize -->
</div>
</div>
</div>
</div>
</div>
</div>
<div class="footer">
<p>
<acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd.
Documentation contributions included herein are the copyrights of
their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property
of their respective owners. </p>
</div>
</body>
</html>
distrib
>
Mageia
>
7
>
armv7hl
>
media
>
core-updates
>
by-pkgid
>
d5e62c01ae8d1e579463c6a871dd44bf
>
files
>
1715
