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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en_US" lang="en_US">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- qwebpage.cpp -->
  <title>Qt 4.8: ViewportAttributes Class Reference</title>
  <link rel="stylesheet" type="text/css" href="style/offline.css" />
</head>
<body>
<div class="header" id="qtdocheader">
  <div class="content"> 
    <a href="index.html" class="qtref"><span>Qt Reference Documentation</span></a>
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<li><a href="modules.html">Modules</a></li>
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<li>ViewportAttributes</li>
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<div class="content mainContent">
<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>
<h1 class="title">ViewportAttributes Class Reference</h1>
<span class="small-subtitle">(QWebPage::ViewportAttributes)<br/></span>
<!-- $$$ViewportAttributes-brief -->
<p>The QWebPage::ViewportAttributes class describes hints that can be applied to a viewport. <a href="#details">More...</a></p>
<!-- @@@ViewportAttributes -->
<p>This class was introduced in Qt 4.7.</p>
<ul>
<li><a href="qwebpage-viewportattributes-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="public-functions"></a>
<h2>Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qwebpage-viewportattributes.html#ViewportAttributes">ViewportAttributes</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qwebpage-viewportattributes.html#ViewportAttributes-2">ViewportAttributes</a></b> ( const QWebPage::ViewportAttributes &amp; <i>other</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qwebpage-viewportattributes.html#dtor.ViewportAttributes">~ViewportAttributes</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> qreal </td><td class="memItemRight bottomAlign"><b><a href="qwebpage-viewportattributes.html#devicePixelRatio">devicePixelRatio</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> qreal </td><td class="memItemRight bottomAlign"><b><a href="qwebpage-viewportattributes.html#initialScaleFactor">initialScaleFactor</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qwebpage-viewportattributes.html#isUserScalable">isUserScalable</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qwebpage-viewportattributes.html#isValid">isValid</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> qreal </td><td class="memItemRight bottomAlign"><b><a href="qwebpage-viewportattributes.html#maximumScaleFactor">maximumScaleFactor</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> qreal </td><td class="memItemRight bottomAlign"><b><a href="qwebpage-viewportattributes.html#minimumScaleFactor">minimumScaleFactor</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QSize </td><td class="memItemRight bottomAlign"><b><a href="qwebpage-viewportattributes.html#size">size</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QWebPage::ViewportAttributes &amp; </td><td class="memItemRight bottomAlign"><b><a href="qwebpage-viewportattributes.html#operator-eq">operator=</a></b> ( const QWebPage::ViewportAttributes &amp; <i>other</i> )</td></tr>
</table>
<a name="details"></a>
<!-- $$$ViewportAttributes-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The QWebPage::ViewportAttributes class describes hints that can be applied to a viewport.</p>
<p>QWebPage::ViewportAttributes provides a description of a viewport, such as viewport geometry, initial scale factor with limits, plus information about whether a user should be able to scale the contents in the viewport or not, ie. by zooming.</p>
<p>ViewportAttributes can be set by a web author using the viewport meta tag extension, documented at <a href="http://developer.apple.com/safari/library/documentation/appleapplications/reference/safariwebcontent/usingtheviewport/usingtheviewport.html">Safari Reference Library: Using the Viewport Meta Tag</a>.</p>
<p>All values might not be set, as such when dealing with the hints, the developer needs to check whether the values are valid. Negative values denote an invalid qreal value.</p>
</div>
<!-- @@@ViewportAttributes -->
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$ViewportAttributes[overload1]$$$ViewportAttributes -->
<h3 class="fn"><a name="ViewportAttributes"></a>ViewportAttributes::<span class="name">ViewportAttributes</span> ()</h3>
<p>Constructs an empty <a href="qwebpage-viewportattributes.html">QWebPage::ViewportAttributes</a>.</p>
<!-- @@@ViewportAttributes -->
<!-- $$$ViewportAttributes$$$ViewportAttributesconstQWebPage::ViewportAttributes& -->
<h3 class="fn"><a name="ViewportAttributes-2"></a>ViewportAttributes::<span class="name">ViewportAttributes</span> ( const <span class="type">QWebPage::ViewportAttributes</span> &amp; <i>other</i> )</h3>
<p>Constructs a <a href="qwebpage-viewportattributes.html">QWebPage::ViewportAttributes</a> which is a copy from <i>other</i> .</p>
<!-- @@@ViewportAttributes -->
<!-- $$$~ViewportAttributes[overload1]$$$~ViewportAttributes -->
<h3 class="fn"><a name="dtor.ViewportAttributes"></a>ViewportAttributes::<span class="name">~ViewportAttributes</span> ()</h3>
<p>Destroys the <a href="qwebpage-viewportattributes.html">QWebPage::ViewportAttributes</a>.</p>
<!-- @@@~ViewportAttributes -->
<!-- $$$devicePixelRatio[overload1]$$$devicePixelRatio -->
<h3 class="fn"><a name="devicePixelRatio"></a><span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> ViewportAttributes::<span class="name">devicePixelRatio</span> () const</h3>
<!-- @@@devicePixelRatio -->
<!-- $$$initialScaleFactor[overload1]$$$initialScaleFactor -->
<h3 class="fn"><a name="initialScaleFactor"></a><span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> ViewportAttributes::<span class="name">initialScaleFactor</span> () const</h3>
<p>Returns the initial scale of the viewport as a multiplier.</p>
<!-- @@@initialScaleFactor -->
<!-- $$$isUserScalable[overload1]$$$isUserScalable -->
<h3 class="fn"><a name="isUserScalable"></a><span class="type">bool</span> ViewportAttributes::<span class="name">isUserScalable</span> () const</h3>
<p>Determines whether or not the scale can be modified by the user.</p>
<!-- @@@isUserScalable -->
<!-- $$$isValid[overload1]$$$isValid -->
<h3 class="fn"><a name="isValid"></a><span class="type">bool</span> ViewportAttributes::<span class="name">isValid</span> () const</h3>
<p>Returns whether this is a valid <a href="qwebpage-viewportattributes.html">ViewportAttributes</a> or not.</p>
<p>An invalid <a href="qwebpage-viewportattributes.html">ViewportAttributes</a> will have an empty <a href="qsize.html">QSize</a>, negative values for scale factors and true for the boolean isUserScalable.</p>
<!-- @@@isValid -->
<!-- $$$maximumScaleFactor[overload1]$$$maximumScaleFactor -->
<h3 class="fn"><a name="maximumScaleFactor"></a><span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> ViewportAttributes::<span class="name">maximumScaleFactor</span> () const</h3>
<p>Returns the maximum scale value of the viewport as a multiplier.</p>
<!-- @@@maximumScaleFactor -->
<!-- $$$minimumScaleFactor[overload1]$$$minimumScaleFactor -->
<h3 class="fn"><a name="minimumScaleFactor"></a><span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> ViewportAttributes::<span class="name">minimumScaleFactor</span> () const</h3>
<p>Returns the minimum scale value of the viewport as a multiplier.</p>
<!-- @@@minimumScaleFactor -->
<!-- $$$size[overload1]$$$size -->
<h3 class="fn"><a name="size"></a><span class="type"><a href="qsize.html">QSize</a></span> ViewportAttributes::<span class="name">size</span> () const</h3>
<p>Returns the size of the viewport.</p>
<!-- @@@size -->
<!-- $$$operator=[overload1]$$$operator=constQWebPage::ViewportAttributes& -->
<h3 class="fn"><a name="operator-eq"></a><span class="type">QWebPage::ViewportAttributes</span> &amp; ViewportAttributes::<span class="name">operator=</span> ( const <span class="type">QWebPage::ViewportAttributes</span> &amp; <i>other</i> )</h3>
<p>Assigns the given <a href="qwebpage-viewportattributes.html">QWebPage::ViewportAttributes</a> to this viewport hints and returns a reference to this.</p>
<!-- @@@operator= -->
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