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Qt 5.2.1 Reference Documentation</li>
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<h1 class="title">ViewportAttributes Class</h1>
<span class="small-subtitle">(QWebPage::ViewportAttributes)<br/></span>
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<p>The QWebPage::ViewportAttributes class describes hints that can be applied to a viewport. <a href="#details">More...</a></p>
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<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign">  Qt 4.7</td></tr></table><ul>
<li><a href="qwebpage-viewportattributes-members.html">List of all members, including inherited members</a></li>
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<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"> QSizeF </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>
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<a name="details"></a>
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<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>
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<h2>Member Function Documentation</h2>
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<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>
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<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>
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<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>
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<h3 class="fn"><a name="devicePixelRatio"></a><span class="type"><a href="../qtcore/qtglobal.html#qreal-typedef">qreal</a></span> ViewportAttributes::<span class="name">devicePixelRatio</span>() const</h3>
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<h3 class="fn"><a name="initialScaleFactor"></a><span class="type"><a href="../qtcore/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>
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<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>
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<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="../qtcore/qsize.html">QSize</a>, negative values for scale factors and true for the boolean isUserScalable.</p>
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<h3 class="fn"><a name="maximumScaleFactor"></a><span class="type"><a href="../qtcore/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>
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<h3 class="fn"><a name="minimumScaleFactor"></a><span class="type"><a href="../qtcore/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>
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<h3 class="fn"><a name="size"></a><span class="type"><a href="../qtcore/qsizef.html">QSizeF</a></span> ViewportAttributes::<span class="name">size</span>() const</h3>
<p>Returns the size of the viewport.</p>
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<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>
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