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<h1 class="title">QConicalGradient Class Reference</h1>
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<p>The QConicalGradient class is used in combination with <a href="qbrush.html">QBrush</a> to specify a conical gradient brush. <a href="#details">More...</a></p>
<!-- @@@QConicalGradient -->
<pre class="cpp"> <span class="preprocessor">#include <QConicalGradient></span></pre><p><b>Inherits: </b><a href="qgradient.html">QGradient</a>.</p>
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<li><a href="qconicalgradient-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="qconicalgradient.html#QConicalGradient">QConicalGradient</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qconicalgradient.html#QConicalGradient-2">QConicalGradient</a></b> ( const QPointF & <i>center</i>, qreal <i>angle</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qconicalgradient.html#QConicalGradient-3">QConicalGradient</a></b> ( qreal <i>cx</i>, qreal <i>cy</i>, qreal <i>angle</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> qreal </td><td class="memItemRight bottomAlign"><b><a href="qconicalgradient.html#angle">angle</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QPointF </td><td class="memItemRight bottomAlign"><b><a href="qconicalgradient.html#center">center</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qconicalgradient.html#setAngle">setAngle</a></b> ( qreal <i>angle</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qconicalgradient.html#setCenter">setCenter</a></b> ( const QPointF & <i>center</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qconicalgradient.html#setCenter-2">setCenter</a></b> ( qreal <i>x</i>, qreal <i>y</i> )</td></tr>
</table>
<ul>
<li class="fn">10 public functions inherited from <a href="qgradient.html#public-functions">QGradient</a></li>
</ul>
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<!-- $$$QConicalGradient-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The QConicalGradient class is used in combination with <a href="qbrush.html">QBrush</a> to specify a conical gradient brush.</p>
<p>Conical gradients interpolate interpolate colors counter-clockwise around a center point.</p>
<p class="centerAlign"><img src="images/qconicalgradient.png" alt="" /></p><p>The colors in a gradient is defined using stop points of the <a href="qgradient.html#QGradientStop-typedef">QGradientStop</a> type, i.e. a position and a color. Use the <a href="qgradient.html#setColorAt">QGradient::setColorAt</a>() or the <a href="qgradient.html#setStops">QGradient::setStops</a>() function to define the stop points. It is the gradient's complete set of stop points that describes how the gradient area should be filled. If no stop points have been specified, a gradient of black at 0 to white at 1 is used.</p>
<p>In addition to the functions inherited from <a href="qgradient.html">QGradient</a>, the QConicalGradient class provides the <a href="qconicalgradient.html#angle">angle</a>() and <a href="qconicalgradient.html#center">center</a>() functions returning the start angle and center of the gradient.</p>
<p>Note that the <a href="qgradient.html#setSpread">setSpread</a>() function has no effect for conical gradients. The reason is that the conical gradient is closed by definition, i.e. the conical gradient fills the entire circle from 0 - 360 degrees, while the boundary of a radial or a linear gradient can be specified through its radius or final stop points, respectively.</p>
</div>
<p><b>See also </b><a href="qlineargradient.html">QLinearGradient</a>, <a href="qradialgradient.html">QRadialGradient</a>, and <a href="demos-gradients.html">The Gradients Demo</a>.</p>
<!-- @@@QConicalGradient -->
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$QConicalGradient[overload1]$$$QConicalGradient -->
<h3 class="fn"><a name="QConicalGradient"></a>QConicalGradient::<span class="name">QConicalGradient</span> ()</h3>
<p>Constructs a conical with center at (0, 0) starting the interpolation at angle 0.</p>
<p><b>See also </b><a href="qgradient.html#setColorAt">QGradient::setColorAt</a>(), <a href="qconicalgradient.html#setCenter">setCenter</a>(), and <a href="qconicalgradient.html#setAngle">setAngle</a>().</p>
<!-- @@@QConicalGradient -->
<!-- $$$QConicalGradient$$$QConicalGradientconstQPointF&qreal -->
<h3 class="fn"><a name="QConicalGradient-2"></a>QConicalGradient::<span class="name">QConicalGradient</span> ( const <span class="type"><a href="qpointf.html">QPointF</a></span> & <i>center</i>, <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <i>angle</i> )</h3>
<p>Constructs a conical gradient with the given <i>center</i>, starting the interpolation at the given <i>angle</i>. The <i>angle</i> must be specified in degrees between 0 and 360.</p>
<p><b>See also </b><a href="qgradient.html#setColorAt">QGradient::setColorAt</a>() and <a href="qgradient.html#setStops">QGradient::setStops</a>().</p>
<!-- @@@QConicalGradient -->
<!-- $$$QConicalGradient$$$QConicalGradientqrealqrealqreal -->
<h3 class="fn"><a name="QConicalGradient-3"></a>QConicalGradient::<span class="name">QConicalGradient</span> ( <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <i>cx</i>, <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <i>cy</i>, <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <i>angle</i> )</h3>
<p>Constructs a conical gradient with the given center (<i>cx</i>, <i>cy</i>), starting the interpolation at the given <i>angle</i>. The angle must be specified in degrees between 0 and 360.</p>
<p><b>See also </b><a href="qgradient.html#setColorAt">QGradient::setColorAt</a>() and <a href="qgradient.html#setStops">QGradient::setStops</a>().</p>
<!-- @@@QConicalGradient -->
<!-- $$$angle[overload1]$$$angle -->
<h3 class="fn"><a name="angle"></a><span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> QConicalGradient::<span class="name">angle</span> () const</h3>
<p>Returns the start angle of the conical gradient in logical coordinates.</p>
<p><b>See also </b><a href="qconicalgradient.html#setAngle">setAngle</a>() and <a href="qgradient.html#stops">stops</a>().</p>
<!-- @@@angle -->
<!-- $$$center[overload1]$$$center -->
<h3 class="fn"><a name="center"></a><span class="type"><a href="qpointf.html">QPointF</a></span> QConicalGradient::<span class="name">center</span> () const</h3>
<p>Returns the center of the conical gradient in logical coordinates.</p>
<p><b>See also </b><a href="qconicalgradient.html#setCenter">setCenter</a>() and <a href="qgradient.html#stops">stops</a>().</p>
<!-- @@@center -->
<!-- $$$setAngle[overload1]$$$setAngleqreal -->
<h3 class="fn"><a name="setAngle"></a><span class="type">void</span> QConicalGradient::<span class="name">setAngle</span> ( <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <i>angle</i> )</h3>
<p>Sets <i>angle</i> to be the start angle for this conical gradient in logical coordinates.</p>
<p>This function was introduced in Qt 4.2.</p>
<p><b>See also </b><a href="qconicalgradient.html#angle">angle</a>().</p>
<!-- @@@setAngle -->
<!-- $$$setCenter[overload1]$$$setCenterconstQPointF& -->
<h3 class="fn"><a name="setCenter"></a><span class="type">void</span> QConicalGradient::<span class="name">setCenter</span> ( const <span class="type"><a href="qpointf.html">QPointF</a></span> & <i>center</i> )</h3>
<p>Sets the center of this conical gradient in logical coordinates to <i>center</i>.</p>
<p><b>See also </b><a href="qconicalgradient.html#center">center</a>().</p>
<!-- @@@setCenter -->
<!-- $$$setCenter$$$setCenterqrealqreal -->
<h3 class="fn"><a name="setCenter-2"></a><span class="type">void</span> QConicalGradient::<span class="name">setCenter</span> ( <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <i>x</i>, <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <i>y</i> )</h3>
<p>This is an overloaded function.</p>
<p>Sets the center of this conical gradient in logical coordinates to (<i>x</i>, <i>y</i>).</p>
<p><b>See also </b><a href="qconicalgradient.html#center">center</a>().</p>
<!-- @@@setCenter -->
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