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</tr></table><h1 class="title">QGraphicsBlurEffect Class Reference<br /><span class="small-subtitle">[<a href="qtgui.html">QtGui</a> module]</span>

</h1>

<p>The QGraphicsBlurEffect class provides a blur effect. <a href="#details">More...</a></p>

<pre> #include <QGraphicsBlurEffect></pre><p>Inherits <a href="qgraphicseffect.html">QGraphicsEffect</a>.</p>

<p>This class was introduced in Qt 4.6.</p>

<ul>

<li><a href="qgraphicsblureffect-members.html">List of all members, including inherited members</a></li>

</ul>

<hr />

<h2>Properties</h2>

<ul>

<li><div class="fn"><b><a href="qgraphicsblureffect.html#blurHint-prop">blurHint</a></b> : Qt::RenderHint</div></li>

<li><div class="fn"><b><a href="qgraphicsblureffect.html#blurRadius-prop">blurRadius</a></b> : int</div></li>

</ul>

<ul>

<li><div bar="2" class="fn"></div>1 property inherited from <a href="qgraphicseffect.html#properties">QGraphicsEffect</a></li>

<li><div bar="2" class="fn"></div>1 property inherited from <a href="qobject.html#properties">QObject</a></li>

</ul>

<hr />

<h2>Public Functions</h2>

<tr><td class="memItemLeft" align="right" valign="top"></td><td class="memItemRight" valign="bottom"><b><a href="qgraphicsblureffect.html#QGraphicsBlurEffect">QGraphicsBlurEffect</a></b> ( QObject * <i>parent</i> = 0 )</td></tr>

<tr><td class="memItemLeft" align="right" valign="top"></td><td class="memItemRight" valign="bottom"><b><a href="qgraphicsblureffect.html#dtor.QGraphicsBlurEffect">~QGraphicsBlurEffect</a></b> ()</td></tr>

<tr><td class="memItemLeft" align="right" valign="top">Qt::RenderHint </td><td class="memItemRight" valign="bottom"><b><a href="qgraphicsblureffect.html#blurHint-prop">blurHint</a></b> () const</td></tr>

<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><b><a href="qgraphicsblureffect.html#blurRadius-prop">blurRadius</a></b> () const</td></tr>

</table>

<hr />

<h2>Reimplemented Public Functions</h2>

<tr><td class="memItemLeft" align="right" valign="top">virtual QRectF </td><td class="memItemRight" valign="bottom"><b><a href="qgraphicsblureffect.html#boundingRectFor">boundingRectFor</a></b> ( const QRectF & <i>rect</i> ) const</td></tr>

</table>

<ul>

<li><div bar="2" class="fn"></div>4 public functions inherited from <a href="qgraphicseffect.html#public-functions">QGraphicsEffect</a></li>

<li><div bar="2" class="fn"></div>29 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li>

</ul>

<hr />

<h2>Public Slots</h2>

<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b><a href="qgraphicsblureffect.html#blurHint-prop">setBlurHint</a></b> ( Qt::RenderHint <i>hint</i> )</td></tr>

<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b><a href="qgraphicsblureffect.html#blurRadius-prop">setBlurRadius</a></b> ( int <i>blurRadius</i> )</td></tr>

</table>

<ul>

<li><div bar="2" class="fn"></div>2 public slots inherited from <a href="qgraphicseffect.html#public-slots">QGraphicsEffect</a></li>

<li><div bar="2" class="fn"></div>1 public slot inherited from <a href="qobject.html#public-slots">QObject</a></li>

</ul>

<hr />

<h2>Signals</h2>

<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b><a href="qgraphicsblureffect.html#blurHintChanged">blurHintChanged</a></b> ( Qt::RenderHint <i>hint</i> )</td></tr>

<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b><a href="qgraphicsblureffect.html#blurRadiusChanged">blurRadiusChanged</a></b> ( int <i>radius</i> )</td></tr>

</table>

<ul>

<li><div bar="2" class="fn"></div>1 signal inherited from <a href="qgraphicseffect.html#signals">QGraphicsEffect</a></li>

<li><div bar="2" class="fn"></div>1 signal inherited from <a href="qobject.html#signals">QObject</a></li>

</ul>

<hr />

<h2>Reimplemented Protected Functions</h2>

<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><b><a href="qgraphicsblureffect.html#draw">draw</a></b> ( QPainter * <i>painter</i>, QGraphicsEffectSource * <i>source</i> )</td></tr>

</table>

<ul>

<li><div bar="2" class="fn"></div>3 protected functions inherited from <a href="qgraphicseffect.html#protected-functions">QGraphicsEffect</a></li>

<li><div bar="2" class="fn"></div>7 protected functions inherited from <a href="qobject.html#protected-functions">QObject</a></li>

</ul>

<h3>Additional Inherited Members</h3>

<ul>

<li><div class="fn"></div>5 static public members inherited from <a href="qobject.html#static-public-members">QObject</a></li>

<li><div class="fn"></div>3 protected functions inherited from <a href="qgraphicseffect.html#protected-functions">QGraphicsEffect</a></li>

<li><div class="fn"></div>7 protected functions inherited from <a href="qobject.html#protected-functions">QObject</a></li>

</ul>

<hr />

<h2>Detailed Description</h2>

<p>The QGraphicsBlurEffect class provides a blur effect.</p>

<p>A blur effect blurs the source. This effect is useful for reducing details, such as when the source loses focus and you want to draw attention to other elements. The level of detail can be modified using the <a href="qgraphicsblureffect.html#blurRadius-prop">setBlurRadius</a>() function. Use <a href="qgraphicsblureffect.html#blurHint-prop">setBlurHint</a>() to choose the quality or performance blur hints.</p>

<p>By default, the blur radius is 5 pixels.</p>

<p align="center"><img src="images/graphicseffect-blur.png" /></p><p>See also <a href="qgraphicsdropshadoweffect.html">QGraphicsDropShadowEffect</a>, <a href="qgraphicspixelizeeffect.html">QGraphicsPixelizeEffect</a>, <a href="qgraphicsgrayscaleeffect.html">QGraphicsGrayscaleEffect</a>, <a href="qgraphicscolorizeeffect.html">QGraphicsColorizeEffect</a>, and <a href="qgraphicsopacityeffect.html">QGraphicsOpacityEffect</a>.</p>

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<h2>Property Documentation</h2>

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<h3 class="fn"><a name="blurHint-prop"></a>blurHint : <a href="qt.html#RenderHint-enum">Qt::RenderHint</a></h3>

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<p>This property holds the blur hint of the effect.</p>

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<p>Use the <a href="qt.html#RenderHint-enum">Qt::PerformanceHint</a> hint to say that you want a faster blur, and the <a href="qt.html#RenderHint-enum">Qt::QualityHint</a> hint to say that you prefer a higher quality blur.</p>

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<p>When animating the blur radius it's recommended to use <a href="qt.html#RenderHint-enum">Qt::PerformanceHint</a>.</p>

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<p>By default, the blur hint is <a href="qt.html#RenderHint-enum">Qt::PerformanceHint</a>.</p>

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<p><b>Access functions:</b></p>

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<tr><td class="memItemLeft" align="right" valign="top">Qt::RenderHint </td><td class="memItemRight" valign="bottom"><b>blurHint</b> () const</td></tr>

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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b>setBlurHint</b> ( Qt::RenderHint <i>hint</i> )</td></tr>

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<p><b>Notifier signal:</b></p>

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</table>

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<h3 class="fn"><a name="blurRadius-prop"></a>blurRadius : int</h3>

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<p>This property holds the blur radius of the effect.</p>

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<p>Using a smaller radius results in a sharper appearance, whereas a bigger radius results in a more blurred appearance.</p>

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<p>By default, the blur radius is 5 pixels.</p>

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<p><b>Access functions:</b></p>

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<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><b>blurRadius</b> () const</td></tr>

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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b>setBlurRadius</b> ( int <i>blurRadius</i> )</td></tr>

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</table>

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<p><b>Notifier signal:</b></p>

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</table>

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<hr />

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<h2>Member Function Documentation</h2>

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<h3 class="fn"><a name="QGraphicsBlurEffect"></a>QGraphicsBlurEffect::QGraphicsBlurEffect ( <a href="qobject.html">QObject</a> * <i>parent</i> = 0 )</h3>

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<p>Constructs a new <a href="qgraphicsblureffect.html">QGraphicsBlurEffect</a> instance. The <i>parent</i> parameter is passed to <a href="qgraphicseffect.html">QGraphicsEffect</a>'s constructor.</p>

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<h3 class="fn"><a name="dtor.QGraphicsBlurEffect"></a>QGraphicsBlurEffect::~QGraphicsBlurEffect ()</h3>

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<p>Destroys the effect.</p>

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<h3 class="fn"><a name="blurHintChanged"></a>void QGraphicsBlurEffect::blurHintChanged ( <a href="qt.html#RenderHint-enum">Qt::RenderHint</a> <i>hint</i> )  <tt> [signal]</tt></h3>

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<p>This signal is emitted whenever the effect's blur hint changes. The <i>hint</i> parameter holds the effect's new blur hint.</p>

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<h3 class="fn"><a name="blurRadiusChanged"></a>void QGraphicsBlurEffect::blurRadiusChanged ( int <i>radius</i> )  <tt> [signal]</tt></h3>

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<p>This signal is emitted whenever the effect's blur radius changes. The <i>radius</i> parameter holds the effect's new blur radius.</p>

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<h3 class="fn"><a name="boundingRectFor"></a><a href="qrectf.html">QRectF</a> QGraphicsBlurEffect::boundingRectFor ( const <a href="qrectf.html">QRectF</a> & <i>rect</i> ) const  <tt> [virtual]</tt></h3>

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<p>Reimplemented from <a href="qgraphicseffect.html#boundingRectFor">QGraphicsEffect::boundingRectFor</a>().</p>

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<h3 class="fn"><a name="draw"></a>void QGraphicsBlurEffect::draw ( <a href="qpainter.html">QPainter</a> * <i>painter</i>, <a href="qgraphicseffectsource.html">QGraphicsEffectSource</a> * <i>source</i> )  <tt> [virtual protected]</tt></h3>

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<p>Reimplemented from <a href="qgraphicseffect.html#draw">QGraphicsEffect::draw</a>().</p>

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