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<a href="#pub-methods">Public Member Functions</a> &#124;
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<div class="title">QwtDialNeedle Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div>  </div>
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<p>Base class for needles that can be used in a <a class="el" href="class_qwt_dial.html" title="QwtDial class provides a rounded range control.">QwtDial</a>.
 <a href="class_qwt_dial_needle.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="qwt__dial__needle_8h_source.html">qwt_dial_needle.h</a>&gt;</code></p>
<div class="dynheader">
Inheritance diagram for QwtDialNeedle:</div>
<div class="dyncontent">
<div class="center"><img src="class_qwt_dial_needle__inherit__graph.png" border="0" usemap="#_qwt_dial_needle_inherit__map" alt="Inheritance graph"/></div>
<map name="_qwt_dial_needle_inherit__map" id="_qwt_dial_needle_inherit__map">
<area shape="rect" id="node3" href="class_qwt_compass_magnet_needle.html" title="A magnet needle for compass widgets." alt="" coords="5,80,187,107"/><area shape="rect" id="node5" href="class_qwt_compass_wind_arrow.html" title="An indicator for the wind direction." alt="" coords="211,80,369,107"/><area shape="rect" id="node7" href="class_qwt_dial_simple_needle.html" title="A needle for dial widgets." alt="" coords="395,80,541,107"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:aef3af79632ce784bc4d7332f6e269a1f"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aef3af79632ce784bc4d7332f6e269a1f"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#aef3af79632ce784bc4d7332f6e269a1f">QwtDialNeedle</a> ()</td></tr>
<tr class="memdesc:aef3af79632ce784bc4d7332f6e269a1f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <br/></td></tr>
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<tr class="memitem:ac23b2af4af50042967c8cea87b474247"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ac23b2af4af50042967c8cea87b474247"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#ac23b2af4af50042967c8cea87b474247">~QwtDialNeedle</a> ()</td></tr>
<tr class="memdesc:ac23b2af4af50042967c8cea87b474247"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br/></td></tr>
<tr class="separator:ac23b2af4af50042967c8cea87b474247"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae850883a64501136bca64d6ea2d084b9"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#ae850883a64501136bca64d6ea2d084b9">setPalette</a> (const QPalette &amp;)</td></tr>
<tr class="separator:ae850883a64501136bca64d6ea2d084b9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8b3c915032389261e07cc983b433166c"><td class="memItemLeft" align="right" valign="top">const QPalette &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#a8b3c915032389261e07cc983b433166c">palette</a> () const </td></tr>
<tr class="separator:a8b3c915032389261e07cc983b433166c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a425085086c4a8c7baff10b161616ee42"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#a425085086c4a8c7baff10b161616ee42">draw</a> (QPainter *painter, const QPointF &amp;center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const </td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr class="memitem:a1e4fee366fec1838edc18890d9957f2b"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#a1e4fee366fec1838edc18890d9957f2b">drawNeedle</a> (QPainter *painter, double length, QPalette::ColorGroup colorGroup) const =0</td></tr>
<tr class="memdesc:a1e4fee366fec1838edc18890d9957f2b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Draw the needle.  <a href="#a1e4fee366fec1838edc18890d9957f2b">More...</a><br/></td></tr>
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virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_dial_needle.html#aaca9572717a1db10b1b6609571024688">drawKnob</a> (QPainter *, double width, const QBrush &amp;, bool sunken) const </td></tr>
<tr class="memdesc:aaca9572717a1db10b1b6609571024688"><td class="mdescLeft">&#160;</td><td class="mdescRight">Draw the knob. <br/></td></tr>
<tr class="separator:aaca9572717a1db10b1b6609571024688"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Base class for needles that can be used in a <a class="el" href="class_qwt_dial.html" title="QwtDial class provides a rounded range control.">QwtDial</a>. </p>
<p><a class="el" href="class_qwt_dial_needle.html" title="Base class for needles that can be used in a QwtDial.">QwtDialNeedle</a> is a pointer that indicates a value by pointing to a specific direction.</p>
<dl class="section see"><dt>See Also</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><h2 class="groupheader">Member Function Documentation</h2>
<a class="anchor" id="a425085086c4a8c7baff10b161616ee42"></a>
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          <td class="memname">void QwtDialNeedle::draw </td>
          <td>(</td>
          <td class="paramtype">QPainter *&#160;</td>
          <td class="paramname"><em>painter</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const QPointF &amp;&#160;</td>
          <td class="paramname"><em>center</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>length</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>direction</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">QPalette::ColorGroup&#160;</td>
          <td class="paramname"><em>colorGroup</em> = <code>QPalette::Active</code>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td> const</td>
        </tr>
      </table>
  </td>
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<p>Draw the needle</p>
<dl class="params"><dt>Parameters</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>

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          <td class="memname">virtual void QwtDialNeedle::drawNeedle </td>
          <td>(</td>
          <td class="paramtype">QPainter *&#160;</td>
          <td class="paramname"><em>painter</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">double&#160;</td>
          <td class="paramname"><em>length</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">QPalette::ColorGroup&#160;</td>
          <td class="paramname"><em>colorGroup</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td> const</td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">protected</span><span class="mlabel">pure virtual</span></span>  </td>
  </tr>
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<p>Draw the needle. </p>
<p>The origin of the needle is at position (0.0, 0.0 ) pointing in direction 0.0 ( = east ).</p>
<p>The painter is already initialized with translation and rotation.</p>
<dl class="params"><dt>Parameters</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>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_dial_needle.html#ae850883a64501136bca64d6ea2d084b9">setPalette()</a>, <a class="el" href="class_qwt_dial_needle.html#a8b3c915032389261e07cc983b433166c">palette()</a> </dd></dl>

<p>Implemented in <a class="el" href="class_qwt_compass_wind_arrow.html#a4e3b612f2de83ff416e34f62c1f0fd6c">QwtCompassWindArrow</a>, <a class="el" href="class_qwt_compass_magnet_needle.html#aa052d929a09bfc6d487a973b2221d44d">QwtCompassMagnetNeedle</a>, and <a class="el" href="class_qwt_dial_simple_needle.html#a0eff8832707ff968d17eddf478d6a771">QwtDialSimpleNeedle</a>.</p>

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          <td class="memname">const QPalette &amp; QwtDialNeedle::palette </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
        </tr>
      </table>
</div><div class="memdoc">
<dl class="section return"><dt>Returns</dt><dd>the palette of the needle. </dd></dl>

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          <td class="memname">void QwtDialNeedle::setPalette </td>
          <td>(</td>
          <td class="paramtype">const QPalette &amp;&#160;</td>
          <td class="paramname"><em>palette</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span>  </td>
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<p>Sets the palette for the needle.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">palette</td><td>New Palette </td></tr>
  </table>
  </dd>
</dl>

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