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<div class="title">Wt::WCircleArea Class Reference</div> </div>
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<!-- doxytag: class="Wt::WCircleArea" --><!-- doxytag: inherits="Wt::WAbstractArea" -->
<p>A interactive area in a widget, specified by a circle.
<a href="classWt_1_1WCircleArea.html#details">More...</a></p>
<p><code>#include <Wt/WCircleArea></code></p>
<div class="dynheader">
Inheritance diagram for Wt::WCircleArea:</div>
<div class="dyncontent">
<div class="center"><img src="classWt_1_1WCircleArea__inherit__graph.png" border="0" usemap="#Wt_1_1WCircleArea_inherit__map" alt="Inheritance graph"/></div>
<map name="Wt_1_1WCircleArea_inherit__map" id="Wt_1_1WCircleArea_inherit__map">
<area shape="rect" href="classWt_1_1WAbstractArea.html" title="Abstract base class for interactive areas in a widget." alt="" coords="5,80,141,107"/><area shape="rect" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system." alt="" coords="25,5,121,32"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<p><a href="classWt_1_1WCircleArea-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WCircleArea.html#a60514d5a3a2da148a684b0a0b3a5b235">WCircleArea</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Default constructor. <a href="#a60514d5a3a2da148a684b0a0b3a5b235"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WCircleArea.html#ae2d43a04099e8d29a317700570828365">WCircleArea</a> (int x, int y, int radius)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a circular area with given geometry. <a href="#ae2d43a04099e8d29a317700570828365"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a10932e173eef6c9531c8086324b7ced8"></a><!-- doxytag: member="Wt::WCircleArea::setCenter" ref="a10932e173eef6c9531c8086324b7ced8" args="(const WPoint &point)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WCircleArea.html#a10932e173eef6c9531c8086324b7ced8">setCenter</a> (const <a class="el" href="classWt_1_1WPoint.html">WPoint</a> &point)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the center. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a604bd32d585d03c2ea509b57f71412f3"></a><!-- doxytag: member="Wt::WCircleArea::setCenter" ref="a604bd32d585d03c2ea509b57f71412f3" args="(const WPointF &point)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WCircleArea.html#a604bd32d585d03c2ea509b57f71412f3">setCenter</a> (const <a class="el" href="classWt_1_1WPointF.html">WPointF</a> &point)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the center. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a939c6645039059067b6924466a477c6c"></a><!-- doxytag: member="Wt::WCircleArea::setCenter" ref="a939c6645039059067b6924466a477c6c" args="(int x, int y)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WCircleArea.html#a939c6645039059067b6924466a477c6c">setCenter</a> (int x, int y)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the center. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a34a758fe81f9f9705e2bd1c9c4d46c41"></a><!-- doxytag: member="Wt::WCircleArea::centerX" ref="a34a758fe81f9f9705e2bd1c9c4d46c41" args="() const " -->
int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WCircleArea.html#a34a758fe81f9f9705e2bd1c9c4d46c41">centerX</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the center X coordinate. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a044104f691997c0238b3abfb95217ee2"></a><!-- doxytag: member="Wt::WCircleArea::centerY" ref="a044104f691997c0238b3abfb95217ee2" args="() const " -->
int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WCircleArea.html#a044104f691997c0238b3abfb95217ee2">centerY</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the center Y coordinate. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a69d4391565a8cb7c707d951362fe22bf"></a><!-- doxytag: member="Wt::WCircleArea::setRadius" ref="a69d4391565a8cb7c707d951362fe22bf" args="(int radius)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WCircleArea.html#a69d4391565a8cb7c707d951362fe22bf">setRadius</a> (int radius)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the radius. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="afe7fed59edd0636ca23771400a63d7f4"></a><!-- doxytag: member="Wt::WCircleArea::radius" ref="afe7fed59edd0636ca23771400a63d7f4" args="() const " -->
int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WCircleArea.html#afe7fed59edd0636ca23771400a63d7f4">radius</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the radius. <br/></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>A interactive area in a widget, specified by a circle. </p>
<p>The area may be added to a <a class="el" href="classWt_1_1WImage.html" title="A widget that displays an image.">WImage</a> or <a class="el" href="classWt_1_1WPaintedWidget.html" title="A widget that is painted using vector graphics.">WPaintedWidget</a> to provide interactivity on a circular area of the image. The circle is specified in pixel coordinates.</p>
<p>Usage example: </p>
<div class="fragment"><pre class="fragment"> <a class="code" href="classWt_1_1WImage.html" title="A widget that displays an image.">Wt::WImage</a> *image = <span class="keyword">new</span> <a class="code" href="classWt_1_1WImage.html" title="A widget that displays an image.">Wt::WImage</a>(<span class="stringliteral">"images/events.png"</span>, <span class="keyword">this</span>);
<a class="code" href="classWt_1_1WCircleArea.html" title="A interactive area in a widget, specified by a circle.">Wt::WCircleArea</a> *area = <span class="keyword">new</span> <a class="code" href="classWt_1_1WCircleArea.html#a60514d5a3a2da148a684b0a0b3a5b235" title="Default constructor.">Wt::WCircleArea</a>(20, 30, 15);
image-><a class="code" href="classWt_1_1WImage.html#aa5737b44a5161b8494b2691c20315417" title="Adds an interactive area.">addArea</a>(area);
area-><a class="code" href="classWt_1_1WAbstractArea.html#acc47a02510ddcc77db551fa51e1479bf" title="Event signal emitted when a mouse key was clicked on this widget.">clicked</a>().connect(<span class="keyword">this</span>, &MyWidget::areaClicked);
</pre></div><dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WImage.html#aa5737b44a5161b8494b2691c20315417" title="Adds an interactive area.">WImage::addArea()</a>, <a class="el" href="classWt_1_1WPaintedWidget.html#ac4c031c7ab47e85f27aac09b7fc37bea" title="Adds an interactive area.">WPaintedWidget::addArea()</a> </dd>
<dd>
<a class="el" href="classWt_1_1WRectArea.html" title="A interactive area in a widget, specified by a rectangle.">WRectArea</a>, <a class="el" href="classWt_1_1WPolygonArea.html" title="An interactive area in a widget, specified by a polygon.">WPolygonArea</a> </dd></dl>
</div><hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="a60514d5a3a2da148a684b0a0b3a5b235"></a><!-- doxytag: member="Wt::WCircleArea::WCircleArea" ref="a60514d5a3a2da148a684b0a0b3a5b235" args="()" -->
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<td class="memname">Wt::WCircleArea::WCircleArea </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
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<p>Default constructor. </p>
<p>Specifies a circular area with center (0, 0) and radius 0. </p>
</div>
</div>
<a class="anchor" id="ae2d43a04099e8d29a317700570828365"></a><!-- doxytag: member="Wt::WCircleArea::WCircleArea" ref="ae2d43a04099e8d29a317700570828365" args="(int x, int y, int radius)" -->
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<td class="memname">Wt::WCircleArea::WCircleArea </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>x</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>y</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>radius</em> </td>
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<td>)</td>
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<p>Creates a circular area with given geometry. </p>
<p>The arguments are in pixel units. </p>
</div>
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