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<html><head><title>QRadialGradient Class Reference</title><style>h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm }
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</style></head><body><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr /><td align="left" valign="top" width="32"><img align="left" border="0" height="32" src="images/rb-logo.png" width="32" /></td><td width="1">  </td><td class="postheader" valign="center"><a href="../pyqt4ref.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="modules.html"><font color="#004faf">Modules</font></a></td></table><h1 align="center">QRadialGradient Class Reference<br /><sup><sup>[<a href="qtgui.html">QtGui</a> module]</sup></sup></h1><p>The QRadialGradient class is used in combination with <a href="qbrush.html">QBrush</a> to specify a radial gradient brush.
<a href="#details">More...</a></p>
<p>Inherits <a href="qgradient.html">QGradient</a>.</p><h3>Methods</h3><ul><li><div class="fn" /><b><a href="qradialgradient.html#QRadialGradient">__init__</a></b> (<i>self</i>)</li><li><div class="fn" /><b><a href="qradialgradient.html#QRadialGradient-2">__init__</a></b> (<i>self</i>, QPointF <i>center</i>, float <i>radius</i>, QPointF <i>focalPoint</i>)</li><li><div class="fn" /><b><a href="qradialgradient.html#QRadialGradient-3">__init__</a></b> (<i>self</i>, QPointF <i>center</i>, float <i>radius</i>)</li><li><div class="fn" /><b><a href="qradialgradient.html#QRadialGradient-4">__init__</a></b> (<i>self</i>, float <i>cx</i>, float <i>cy</i>, float <i>radius</i>, float <i>fx</i>, float <i>fy</i>)</li><li><div class="fn" /><b><a href="qradialgradient.html#QRadialGradient-5">__init__</a></b> (<i>self</i>, float <i>cx</i>, float <i>cy</i>, float <i>radius</i>)</li><li><div class="fn" /><b><a href="qradialgradient.html#QRadialGradient-6">__init__</a></b> (<i>self</i>, QRadialGradient)</li><li><div class="fn" />QPointF <b><a href="qradialgradient.html#center">center</a></b> (<i>self</i>)</li><li><div class="fn" />QPointF <b><a href="qradialgradient.html#focalPoint">focalPoint</a></b> (<i>self</i>)</li><li><div class="fn" />float <b><a href="qradialgradient.html#radius">radius</a></b> (<i>self</i>)</li><li><div class="fn" /><b><a href="qradialgradient.html#setCenter">setCenter</a></b> (<i>self</i>, QPointF <i>center</i>)</li><li><div class="fn" /><b><a href="qradialgradient.html#setCenter-2">setCenter</a></b> (<i>self</i>, float <i>x</i>, float <i>y</i>)</li><li><div class="fn" /><b><a href="qradialgradient.html#setFocalPoint">setFocalPoint</a></b> (<i>self</i>, QPointF <i>focalPoint</i>)</li><li><div class="fn" /><b><a href="qradialgradient.html#setFocalPoint-2">setFocalPoint</a></b> (<i>self</i>, float <i>x</i>, float <i>y</i>)</li><li><div class="fn" /><b><a href="qradialgradient.html#setRadius">setRadius</a></b> (<i>self</i>, float <i>radius</i>)</li></ul><a name="details" /><hr /><h2>Detailed Description</h2><p>The QRadialGradient class is used in combination with <a href="qbrush.html">QBrush</a> to specify a radial gradient brush.</p>
<p>Radial gradients interpolate colors between a focal point and
end points on a circle surrounding it. Outside the end points the
gradient is either padded, reflected or repeated depending on the
currently set <a href="qgradient.html#Spread-enum">spread</a>
method:</p>
<table class="generic">
<tr class="odd topAlign">
<td>
<p><img src="images/qradialgradient-pad.png" /></p>
</td>
<td>
<p><img src="images/qradialgradient-reflect.png" /></p>
</td>
<td>
<p><img src="images/qradialgradient-repeat.png" /></p>
</td>
</tr>
<tr class="even topAlign">
<td>
<p><a href="qgradient.html#Spread-enum">PadSpread</a> (default)</p>
</td>
<td>
<p><a href="qgradient.html#Spread-enum">ReflectSpread</a></p>
</td>
<td>
<p><a href="qgradient.html#Spread-enum">RepeatSpread</a></p>
</td>
</tr>
</table>
<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 QRadialGradient class provides
the <a href="qradialgradient.html#center">center</a>(), <a href="qradialgradient.html#focalPoint">focalPoint</a>() and <a href="qradialgradient.html#radius">radius</a>() functions returning the
gradient's center, focal point and radius respectively.</p>
<hr /><h2>Method Documentation</h2><h3 class="fn"><a name="QRadialGradient" />QRadialGradient.__init__ (<i>self</i>)</h3><p>Constructs a radial gradient with the center and focal point at
(0, 0) with a radius of 1.</p>
<h3 class="fn"><a name="QRadialGradient-2" />QRadialGradient.__init__ (<i>self</i>, <a href="qpointf.html">QPointF</a> <i>center</i>, float <i>radius</i>, <a href="qpointf.html">QPointF</a> <i>focalPoint</i>)</h3><p>Constructs a radial gradient with the given <i>center</i>,
<i>radius</i> and <i>focalPoint</i>.</p>
<p>See also <a href="qgradient.html#setColorAt">QGradient.setColorAt</a>() and
<a href="qgradient.html#setStops">QGradient.setStops</a>().</p>
<h3 class="fn"><a name="QRadialGradient-3" />QRadialGradient.__init__ (<i>self</i>, <a href="qpointf.html">QPointF</a> <i>center</i>, float <i>radius</i>)</h3><p>Constructs a radial gradient with the given center (<i>cx</i>,
<i>cy</i>), <i>radius</i> and focal point (<i>fx</i>,
<i>fy</i>).</p>
<p>See also <a href="qgradient.html#setColorAt">QGradient.setColorAt</a>() and
<a href="qgradient.html#setStops">QGradient.setStops</a>().</p>
<h3 class="fn"><a name="QRadialGradient-4" />QRadialGradient.__init__ (<i>self</i>, float <i>cx</i>, float <i>cy</i>, float <i>radius</i>, float <i>fx</i>, float <i>fy</i>)</h3><p>Constructs a radial gradient with the given <i>center</i>,
<i>radius</i> and the focal point in the circle center.</p>
<p>See also <a href="qgradient.html#setColorAt">QGradient.setColorAt</a>() and
<a href="qgradient.html#setStops">QGradient.setStops</a>().</p>
<h3 class="fn"><a name="QRadialGradient-5" />QRadialGradient.__init__ (<i>self</i>, float <i>cx</i>, float <i>cy</i>, float <i>radius</i>)</h3><p>Constructs a radial gradient with the center at (<i>cx</i>,
<i>cy</i>) and the specified <i>radius</i>. The focal point lies at
the center of the circle.</p>
<p>See also <a href="qgradient.html#setColorAt">QGradient.setColorAt</a>() and
<a href="qgradient.html#setStops">QGradient.setStops</a>().</p>
<h3 class="fn"><a name="QRadialGradient-6" />QRadialGradient.__init__ (<i>self</i>, <a href="qradialgradient.html">QRadialGradient</a>)</h3><h3 class="fn"><a name="center" /><a href="qpointf.html">QPointF</a> QRadialGradient.center (<i>self</i>)</h3><p>Returns the center of this radial gradient in logical
coordinates.</p>
<p>See also <a href="qradialgradient.html#setCenter">setCenter</a>() and <a href="qgradient.html#stops">QGradient.stops</a>().</p>
<h3 class="fn"><a name="focalPoint" /><a href="qpointf.html">QPointF</a> QRadialGradient.focalPoint (<i>self</i>)</h3><p>Returns the focal point of this radial gradient in logical
coordinates.</p>
<p>See also <a href="qradialgradient.html#setFocalPoint">setFocalPoint</a>() and
<a href="qgradient.html#stops">QGradient.stops</a>().</p>
<h3 class="fn"><a name="radius" />float QRadialGradient.radius (<i>self</i>)</h3><p>Returns the radius of this radial gradient in logical
coordinates.</p>
<p>See also <a href="qradialgradient.html#setRadius">setRadius</a>() and <a href="qgradient.html#stops">QGradient.stops</a>().</p>
<h3 class="fn"><a name="setCenter" />QRadialGradient.setCenter (<i>self</i>, <a href="qpointf.html">QPointF</a> <i>center</i>)</h3><p>Sets the center of this radial gradient in logical coordinates
to <i>center</i>.</p>
<p>This function was introduced in Qt 4.2.</p>
<p>See also <a href="qradialgradient.html#center">center</a>().</p>
<h3 class="fn"><a name="setCenter-2" />QRadialGradient.setCenter (<i>self</i>, float <i>x</i>, float <i>y</i>)</h3><p>This is an overloaded function.</p>
<p>Sets the center of this radial gradient in logical coordinates
to (<i>x</i>, <i>y</i>).</p>
<p>This function was introduced in Qt 4.2.</p>
<p>See also <a href="qradialgradient.html#center">center</a>().</p>
<h3 class="fn"><a name="setFocalPoint" />QRadialGradient.setFocalPoint (<i>self</i>, <a href="qpointf.html">QPointF</a> <i>focalPoint</i>)</h3><p>Sets the focal point of this radial gradient in logical
coordinates to <i>focalPoint</i>.</p>
<p>This function was introduced in Qt 4.2.</p>
<p>See also <a href="qradialgradient.html#focalPoint">focalPoint</a>().</p>
<h3 class="fn"><a name="setFocalPoint-2" />QRadialGradient.setFocalPoint (<i>self</i>, float <i>x</i>, float <i>y</i>)</h3><p>This is an overloaded function.</p>
<p>Sets the focal point of this radial gradient in logical
coordinates to (<i>x</i>, <i>y</i>).</p>
<p>This function was introduced in Qt 4.2.</p>
<p>See also <a href="qradialgradient.html#focalPoint">focalPoint</a>().</p>
<h3 class="fn"><a name="setRadius" />QRadialGradient.setRadius (<i>self</i>, float <i>radius</i>)</h3><p>Sets the radius of this radial gradient in logical coordinates
to <i>radius</i></p>
<p>This function was introduced in Qt 4.2.</p>
<p>See also <a href="qradialgradient.html#radius">radius</a>().</p>
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