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127 lines
6.2 KiB
127 lines
6.2 KiB
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/canvas/qcanvas.cpp:4134 -->
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<title>QCanvasPolygon Class</title>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QCanvasPolygon Class Reference<br><small>[<a href="canvas.html">canvas module</a>]</small></h1>
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<p>The QCanvasPolygon class provides a polygon on a QCanvas.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="qcanvas-h.html">qcanvas.h</a>></tt>
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<p>Inherits <a href="qcanvaspolygonalitem.html">QCanvasPolygonalItem</a>.
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<p>Inherited by <a href="qcanvasspline.html">QCanvasSpline</a>.
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<p><a href="qcanvaspolygon-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn><a href="#QCanvasPolygon"><b>QCanvasPolygon</b></a> ( QCanvas * canvas )</li>
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<li class=fn><a href="#~QCanvasPolygon"><b>~QCanvasPolygon</b></a> ()</li>
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<li class=fn>void <a href="#setPoints"><b>setPoints</b></a> ( QPointArray pa )</li>
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<li class=fn>QPointArray <a href="#points"><b>points</b></a> () const</li>
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<li class=fn>virtual QPointArray <a href="#areaPoints"><b>areaPoints</b></a> () const</li>
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<li class=fn>virtual int <a href="#rtti"><b>rtti</b></a> () const</li>
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</ul>
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<h2>Protected Members</h2>
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<ul>
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<li class=fn>virtual void <a href="#drawShape"><b>drawShape</b></a> ( QPainter & p )</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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The QCanvasPolygon class provides a polygon on a <a href="qcanvas.html">QCanvas</a>.
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<p>
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<p> Paints a polygon with a <a href="qbrush.html">QBrush</a>. The polygon's points can be set in
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the constructor or set or changed later using <a href="#setPoints">setPoints</a>(). Use
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<a href="#points">points</a>() to retrieve the points, or <a href="#areaPoints">areaPoints</a>() to retrieve the
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points relative to the canvas's origin.
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<p> The polygon can be drawn on a painter with <a href="#drawShape">drawShape</a>().
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<p> Like any other canvas item polygons can be moved with
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<a href="qcanvasitem.html#move">QCanvasItem::move</a>() and <a href="qcanvasitem.html#moveBy">QCanvasItem::moveBy</a>(), or by setting
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coordinates with <a href="qcanvasitem.html#setX">QCanvasItem::setX</a>(), <a href="qcanvasitem.html#setY">QCanvasItem::setY</a>() and
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<a href="qcanvasitem.html#setZ">QCanvasItem::setZ</a>().
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<p> Note: QCanvasPolygon does not use the pen.
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<p>See also <a href="graphics.html">Graphics Classes</a> and <a href="images.html">Image Processing Classes</a>.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn><a name="QCanvasPolygon"></a>QCanvasPolygon::QCanvasPolygon ( <a href="qcanvas.html">QCanvas</a> * canvas )
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</h3>
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Constructs a point-less polygon on the canvas <em>canvas</em>. You
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should call <a href="#setPoints">setPoints</a>() before using it further.
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<h3 class=fn><a name="~QCanvasPolygon"></a>QCanvasPolygon::~QCanvasPolygon ()
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</h3>
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Destroys the polygon.
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<h3 class=fn><a href="qpointarray.html">QPointArray</a> <a name="areaPoints"></a>QCanvasPolygon::areaPoints () const<tt> [virtual]</tt>
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</h3>
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Returns the vertices of the polygon translated by the polygon's
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current <a href="qcanvasitem.html#x">x</a>(), <a href="qcanvasitem.html#y">y</a>() position, i.e. relative to the canvas's origin.
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<p> <p>See also <a href="#setPoints">setPoints</a>() and <a href="#points">points</a>().
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<p>Reimplemented from <a href="qcanvaspolygonalitem.html#areaPoints">QCanvasPolygonalItem</a>.
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<h3 class=fn>void <a name="drawShape"></a>QCanvasPolygon::drawShape ( <a href="qpainter.html">QPainter</a> & p )<tt> [virtual protected]</tt>
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</h3>
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Draws the polygon using the painter <em>p</em>.
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<p> Note that QCanvasPolygon does not support an outline (the pen is
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always NoPen).
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<p>Reimplemented from <a href="qcanvaspolygonalitem.html#drawShape">QCanvasPolygonalItem</a>.
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<h3 class=fn><a href="qpointarray.html">QPointArray</a> <a name="points"></a>QCanvasPolygon::points () const
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</h3>
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<p> Returns the vertices of the polygon, not translated by the position.
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<p> <p>See also <a href="#setPoints">setPoints</a>() and <a href="#areaPoints">areaPoints</a>().
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<h3 class=fn>int <a name="rtti"></a>QCanvasPolygon::rtti () const<tt> [virtual]</tt>
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</h3>
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Returns 4 (QCanvasItem::Rtti_Polygon).
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<p> <p>See also <a href="qcanvasitem.html#rtti">QCanvasItem::rtti</a>().
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<p>Reimplemented from <a href="qcanvaspolygonalitem.html#rtti">QCanvasPolygonalItem</a>.
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<p>Reimplemented in <a href="qcanvasspline.html#rtti">QCanvasSpline</a>.
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<h3 class=fn>void <a name="setPoints"></a>QCanvasPolygon::setPoints ( <a href="qpointarray.html">QPointArray</a> pa )
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</h3>
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Sets the points of the polygon to be <em>pa</em>. These points will have
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their x and y coordinates automatically translated by <a href="qcanvasitem.html#x">x</a>(), <a href="qcanvasitem.html#y">y</a>() as
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the polygon is moved.
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