<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>Qwt User's Guide: QwtCompassMagnetNeedle Class Reference</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="doxygen.css" rel="stylesheet" type="text/css"/> </head> <body> <!-- Generated by Doxygen 1.7.3 --> <div id="top"> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">Qwt User's Guide <span id="projectnumber">6.0.1</span></div> </td> </tr> </tbody> </table> </div> <div id="navrow1" class="tabs"> <ul class="tablist"> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li class="current"><a href="annotated.html"><span>Classes</span></a></li> <li><a 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Inheritance diagram for QwtCompassMagnetNeedle:</div> <div class="dyncontent"> <div class="center"><img src="class_qwt_compass_magnet_needle__inherit__graph.png" border="0" usemap="#_qwt_compass_magnet_needle_inherit__map" alt="Inheritance graph"/></div> <map name="_qwt_compass_magnet_needle_inherit__map" id="_qwt_compass_magnet_needle_inherit__map"> <area shape="rect" id="node2" href="class_qwt_dial_needle.html" title="Base class for needles that can be used in a QwtDial." alt="" coords="43,5,149,35"/></map> <center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div> <p><a href="class_qwt_compass_magnet_needle-members.html">List of all members.</a></p> <table class="memberdecls"> <tr><td colspan="2"><h2><a name="pub-types"></a> Public Types</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_compass_magnet_needle.html#aee1d882c6ec8b680b94b59b5710a92a5">Style</a> { <br/>   <a class="el" href="class_qwt_compass_magnet_needle.html#aee1d882c6ec8b680b94b59b5710a92a5ad2ba960c4dae88e36da39f6b62798f3b">TriangleStyle</a>, <br/>   <a class="el" href="class_qwt_compass_magnet_needle.html#aee1d882c6ec8b680b94b59b5710a92a5ab63a2dd26ef14c2aaf9763bc24a8bdac">ThinStyle</a> <br/> }</td></tr> <tr><td colspan="2"><h2><a name="pub-methods"></a> Public Member Functions</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#a425085086c4a8c7baff10b161616ee42">draw</a> (QPainter *painter, const QPointF &center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const </td></tr> <tr><td class="memItemLeft" align="right" valign="top">const QPalette & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#a8b3c915032389261e07cc983b433166c">palette</a> () const </td></tr> <tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_compass_magnet_needle.html#a3422e6490d44c527289bafdcceecd741">QwtCompassMagnetNeedle</a> (<a class="el" href="class_qwt_compass_magnet_needle.html#aee1d882c6ec8b680b94b59b5710a92a5">Style</a>=TriangleStyle, const QColor &light=Qt::white, const QColor &dark=Qt::red)</td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#ae850883a64501136bca64d6ea2d084b9">setPalette</a> (const QPalette &)</td></tr> <tr><td colspan="2"><h2><a name="pro-methods"></a> Protected Member Functions</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#aaca9572717a1db10b1b6609571024688">drawKnob</a> (QPainter *, double width, const QBrush &, bool sunken) const </td></tr> <tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_compass_magnet_needle.html#aa052d929a09bfc6d487a973b2221d44d">drawNeedle</a> (QPainter *, double length, QPalette::ColorGroup) const </td></tr> </table> <hr/><a name="_details"></a><h2>Detailed Description</h2> <div class="textblock"><p>A magnet needle for compass widgets. </p> <p>A magnet needle points to two opposite directions indicating north and south.</p> <p>The following colors are used:</p> <ul> <li>QPalette::Light<br/> Used for pointing south</li> <li>QPalette::Dark<br/> Used for pointing north</li> <li>QPalette::Base<br/> Knob (ThinStyle only)</li> </ul> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_dial.html" title="QwtDial class provides a rounded range control.">QwtDial</a>, <a class="el" href="class_qwt_compass.html" title="A Compass Widget.">QwtCompass</a> </dd></dl> </div><hr/><h2>Member Enumeration Documentation</h2> <a class="anchor" id="aee1d882c6ec8b680b94b59b5710a92a5"></a><!-- doxytag: member="QwtCompassMagnetNeedle::Style" ref="aee1d882c6ec8b680b94b59b5710a92a5" args="" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">enum <a class="el" href="class_qwt_compass_magnet_needle.html#aee1d882c6ec8b680b94b59b5710a92a5">QwtCompassMagnetNeedle::Style</a></td> </tr> </table> </div> <div class="memdoc"> <p>Style of the needle. </p> <dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"><em><a class="anchor" id="aee1d882c6ec8b680b94b59b5710a92a5ad2ba960c4dae88e36da39f6b62798f3b"></a><!-- doxytag: member="TriangleStyle" ref="aee1d882c6ec8b680b94b59b5710a92a5ad2ba960c4dae88e36da39f6b62798f3b" args="" -->TriangleStyle</em> </td><td> <p>A needle with a triangular shape. </p> </td></tr> <tr><td valign="top"><em><a class="anchor" id="aee1d882c6ec8b680b94b59b5710a92a5ab63a2dd26ef14c2aaf9763bc24a8bdac"></a><!-- doxytag: member="ThinStyle" ref="aee1d882c6ec8b680b94b59b5710a92a5ab63a2dd26ef14c2aaf9763bc24a8bdac" args="" -->ThinStyle</em> </td><td> <p>A thin needle. </p> </td></tr> </table> </dd> </dl> </div> </div> <hr/><h2>Constructor & Destructor Documentation</h2> <a class="anchor" id="a3422e6490d44c527289bafdcceecd741"></a><!-- doxytag: member="QwtCompassMagnetNeedle::QwtCompassMagnetNeedle" ref="a3422e6490d44c527289bafdcceecd741" args="(Style=TriangleStyle, const QColor &light=Qt::white, const QColor &dark=Qt::red)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">QwtCompassMagnetNeedle::QwtCompassMagnetNeedle </td> <td>(</td> <td class="paramtype"><a class="el" href="class_qwt_compass_magnet_needle.html#aee1d882c6ec8b680b94b59b5710a92a5">Style</a> </td> <td class="paramname"><em>style</em> = <code>TriangleStyle</code>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const QColor & </td> <td class="paramname"><em>light</em> = <code>Qt::white</code>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const QColor & </td> <td class="paramname"><em>dark</em> = <code>Qt::red</code> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Constructor. </p> </div> </div> <hr/><h2>Member Function Documentation</h2> <a class="anchor" id="a425085086c4a8c7baff10b161616ee42"></a><!-- doxytag: member="QwtCompassMagnetNeedle::draw" ref="a425085086c4a8c7baff10b161616ee42" args="(QPainter *painter, const QPointF &center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void QwtDialNeedle::draw </td> <td>(</td> <td class="paramtype">QPainter * </td> <td class="paramname"><em>painter</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const QPointF & </td> <td class="paramname"><em>center</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">double </td> <td class="paramname"><em>length</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">double </td> <td class="paramname"><em>direction</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">QPalette::ColorGroup </td> <td class="paramname"><em>colorGroup</em> = <code>QPalette::Active</code> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td> const<code> [virtual, inherited]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Draw the needle</p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">painter</td><td>Painter </td></tr> <tr><td class="paramname">center</td><td>Center of the dial, start position for the needle </td></tr> <tr><td class="paramname">length</td><td>Length of the needle </td></tr> <tr><td class="paramname">direction</td><td>Direction of the needle, in degrees counter clockwise </td></tr> <tr><td class="paramname">colorGroup</td><td>Color group, used for painting </td></tr> </table> </dd> </dl> </div> </div> <a class="anchor" id="aaca9572717a1db10b1b6609571024688"></a><!-- doxytag: member="QwtCompassMagnetNeedle::drawKnob" ref="aaca9572717a1db10b1b6609571024688" args="(QPainter *, double width, const QBrush &, bool sunken) const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void QwtDialNeedle::drawKnob </td> <td>(</td> <td class="paramtype">QPainter * </td> <td class="paramname"><em>painter</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">double </td> <td class="paramname"><em>width</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">const QBrush & </td> <td class="paramname"><em>brush</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">bool </td> <td class="paramname"><em>sunken</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td> const<code> [protected, virtual, inherited]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Draw the knob. </p> </div> </div> <a class="anchor" id="aa052d929a09bfc6d487a973b2221d44d"></a><!-- doxytag: member="QwtCompassMagnetNeedle::drawNeedle" ref="aa052d929a09bfc6d487a973b2221d44d" args="(QPainter *, double length, QPalette::ColorGroup) const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void QwtCompassMagnetNeedle::drawNeedle </td> <td>(</td> <td class="paramtype">QPainter * </td> <td class="paramname"><em>painter</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">double </td> <td class="paramname"><em>length</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">QPalette::ColorGroup </td> <td class="paramname"><em>colorGroup</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td> const<code> [protected, virtual]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Draw the needle</p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">painter</td><td>Painter </td></tr> <tr><td class="paramname">length</td><td>Length of the needle </td></tr> <tr><td class="paramname">colorGroup</td><td>Color group, used for painting </td></tr> </table> </dd> </dl> <p>Implements <a class="el" href="class_qwt_dial_needle.html#a1e4fee366fec1838edc18890d9957f2b">QwtDialNeedle</a>.</p> </div> </div> <a class="anchor" id="a8b3c915032389261e07cc983b433166c"></a><!-- doxytag: member="QwtCompassMagnetNeedle::palette" ref="a8b3c915032389261e07cc983b433166c" args="() const " --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">const QPalette & QwtDialNeedle::palette </td> <td>(</td> <td class="paramname"></td><td>)</td> <td> const<code> [inherited]</code></td> </tr> </table> </div> <div class="memdoc"> <dl class="return"><dt><b>Returns:</b></dt><dd>the palette of the needle. </dd></dl> </div> </div> <a class="anchor" id="ae850883a64501136bca64d6ea2d084b9"></a><!-- doxytag: member="QwtCompassMagnetNeedle::setPalette" ref="ae850883a64501136bca64d6ea2d084b9" args="(const QPalette &)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">void QwtDialNeedle::setPalette </td> <td>(</td> <td class="paramtype">const QPalette & </td> <td class="paramname"><em>palette</em></td><td>)</td> <td><code> [virtual, inherited]</code></td> </tr> </table> </div> <div class="memdoc"> <p>Sets the palette for the needle.</p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">palette</td><td>New Palette </td></tr> </table> </dd> </dl> </div> </div> </div> <hr 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