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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Qwt User's Guide: QwtDialNeedle Class Reference</title>
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<!-- Generated by Doxygen 1.3.8 -->
<div class="qindex"><a class="qindex" href="index.html">Main Page</a> | <a class="qindex" href="hierarchy.html">Class Hierarchy</a> | <a class="qindex" href="classes.html">Alphabetical List</a> | <a class="qindex" href="annotated.html">Class List</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="functions.html">Class Members</a> | <a class="qindex" href="globals.html">File Members</a> | <a class="qindex" href="pages.html">Related Pages</a></div>
<h1>QwtDialNeedle Class Reference</h1>Inheritance diagram for QwtDialNeedle:<p><center><img src="class_qwt_dial_needle__inherit__graph.png" border="0" usemap="#_qwt_dial_needle__inherit__map" alt="Inheritance graph"></center>
<map name="_qwt_dial_needle__inherit__map">
<area href="class_qwt_compass_magnet_needle.html" shape="rect" coords="6,93,190,117" alt="">
<area href="class_qwt_compass_wind_arrow.html" shape="rect" coords="214,93,377,117" alt="">
<area href="class_qwt_dial_simple_needle.html" shape="rect" coords="401,93,545,117" alt="">
</map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="class_qwt_dial_needle-members.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
Base class for needles that can be used in a <a class="el" href="class_qwt_dial.html">QwtDial</a>.
<p>
QwtDialNeedle is a pointer that indicates a value by pointing to a specific direction.<p>
Qwt is missing a set of good looking needles. Contributions are very welcome.<p>
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_dial.html">QwtDial</a>, <a class="el" href="class_qwt_compass.html">QwtCompass</a> </dd></dl>
<p>
Definition at line <a class="el" href="qwt__dial__needle_8h-source.html#l00031">31</a> of file <a class="el" href="qwt__dial__needle_8h-source.html">qwt_dial_needle.h</a>.<table border=0 cellpadding=0 cellspacing=0>
<tr><td></td></tr>
<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top> </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_dial_needle.html#a0">QwtDialNeedle</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_dial_needle.html#a1">~QwtDialNeedle</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_dial_needle.html#a2">draw</a> (QPainter *painter, const QPoint &center, int length, double direction, QPalette::ColorGroup cg=QPalette::Active) const =0</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_dial_needle.html#a3">setPalette</a> (const QPalette &)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>const QPalette & </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_dial_needle.html#a4">palette</a> () const</td></tr>
<tr><td colspan=2><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>const QColorGroup & </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_dial_needle.html#b0">colorGroup</a> (QPalette::ColorGroup) const</td></tr>
<tr><td colspan=2><br><h2>Static Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="class_qwt_dial_needle.html#f0">drawKnob</a> (QPainter *, const QPoint &pos, int width, const QBrush &, bool sunken)</td></tr>
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<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="a0" doxytag="QwtDialNeedle::QwtDialNeedle" ></a><p>
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<td class="md" nowrap valign="top"> QwtDialNeedle::QwtDialNeedle </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
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</td>
<td>
<p>
Constructor.
<p>
Definition at line <a class="el" href="qwt__dial__needle_8cpp-source.html#l00018">18</a> of file <a class="el" href="qwt__dial__needle_8cpp-source.html">qwt_dial_needle.cpp</a>. </td>
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</table>
<a class="anchor" name="a1" doxytag="QwtDialNeedle::~QwtDialNeedle" ></a><p>
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<td class="md" nowrap valign="top"> QwtDialNeedle::~<a class="el" href="class_qwt_dial_needle.html">QwtDialNeedle</a> </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
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</td>
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<p>
Destructor.
<p>
Definition at line <a class="el" href="qwt__dial__needle_8cpp-source.html#l00024">24</a> of file <a class="el" href="qwt__dial__needle_8cpp-source.html">qwt_dial_needle.cpp</a>. </td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="b0" doxytag="QwtDialNeedle::colorGroup" ></a><p>
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<td class="md" nowrap valign="top"> const QColorGroup & QwtDialNeedle::colorGroup </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">QPalette::ColorGroup </td>
<td class="mdname1" valign="top" nowrap> <em>cg</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [protected]</code></td>
</tr>
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</td>
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<td>
</td>
<td>
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>cg</em> </td><td>Identifier of the color group </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>The color group of the palette. </dd></dl>
Definition at line <a class="el" href="qwt__dial__needle_8cpp-source.html#l00085">85</a> of file <a class="el" href="qwt__dial__needle_8cpp-source.html">qwt_dial_needle.cpp</a>.
<p>
Referenced by <a class="el" href="qwt__dial__needle_8cpp-source.html#l00462">QwtCompassWindArrow::draw()</a>, <a class="el" href="qwt__dial__needle_8cpp-source.html#l00295">QwtCompassMagnetNeedle::draw()</a>, and <a class="el" href="qwt__dial__needle_8cpp-source.html#l00142">QwtDialSimpleNeedle::draw()</a>. </td>
</tr>
</table>
<a class="anchor" name="a2" doxytag="QwtDialNeedle::draw" ></a><p>
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<td class="md" nowrap valign="top"> virtual void QwtDialNeedle::draw </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">QPainter * </td>
<td class="mdname" nowrap> <em>painter</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>const QPoint & </td>
<td class="mdname" nowrap> <em>center</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>length</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>double </td>
<td class="mdname" nowrap> <em>direction</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>QPalette::ColorGroup </td>
<td class="mdname" nowrap> <em>cg</em> = <code>QPalette::Active</code></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"> const<code> [pure virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Draw the needle<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>painter</em> </td><td>Painter </td></tr>
<tr><td></td><td valign=top><em>center</em> </td><td>Center of the dial, start position for the needle </td></tr>
<tr><td></td><td valign=top><em>length</em> </td><td>Length of the needle </td></tr>
<tr><td></td><td valign=top><em>direction</em> </td><td>Direction of the needle, in degrees counter clockwise </td></tr>
<tr><td></td><td valign=top><em>cg</em> </td><td>Color group, used for painting </td></tr>
</table>
</dl>
<p>
Implemented in <a class="el" href="class_qwt_dial_simple_needle.html#a1">QwtDialSimpleNeedle</a>, <a class="el" href="class_qwt_compass_magnet_needle.html#a1">QwtCompassMagnetNeedle</a>, and <a class="el" href="class_qwt_compass_wind_arrow.html#a1">QwtCompassWindArrow</a>.
<p>
<p>
Referenced by <a class="el" href="qwt__analog__clock_8cpp-source.html#l00191">QwtAnalogClock::drawHand()</a>, and <a class="el" href="qwt__dial_8cpp-source.html#l00584">QwtDial::drawNeedle()</a>. </td>
</tr>
</table>
<a class="anchor" name="f0" doxytag="QwtDialNeedle::drawKnob" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top"> void QwtDialNeedle::drawKnob </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">QPainter * </td>
<td class="mdname" nowrap>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>const QPoint & </td>
<td class="mdname" nowrap> <em>pos</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>width</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>const QBrush & </td>
<td class="mdname" nowrap>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>bool </td>
<td class="mdname" nowrap> <em>sunken</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [static, protected]</code></td>
</tr>
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</td>
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<td>
</td>
<td>
<p>
Draw the knob.
<p>
Definition at line <a class="el" href="qwt__dial__needle_8cpp-source.html#l00047">47</a> of file <a class="el" href="qwt__dial__needle_8cpp-source.html">qwt_dial_needle.cpp</a>.
<p>
Referenced by <a class="el" href="qwt__dial__needle_8cpp-source.html#l00208">QwtDialSimpleNeedle::drawArrowNeedle()</a>, <a class="el" href="qwt__dial__needle_8cpp-source.html#l00160">QwtDialSimpleNeedle::drawRayNeedle()</a>, and <a class="el" href="qwt__dial__needle_8cpp-source.html#l00369">QwtCompassMagnetNeedle::drawThinNeedle()</a>. </td>
</tr>
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<a class="anchor" name="a4" doxytag="QwtDialNeedle::palette" ></a><p>
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<td class="md" nowrap valign="top"> const QPalette & QwtDialNeedle::palette </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
</tr>
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</td>
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</td>
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<p>
<dl compact><dt><b>Returns:</b></dt><dd>the palette of the needle. </dd></dl>
Definition at line <a class="el" href="qwt__dial__needle_8cpp-source.html#l00041">41</a> of file <a class="el" href="qwt__dial__needle_8cpp-source.html">qwt_dial_needle.cpp</a>. </td>
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<a class="anchor" name="a3" doxytag="QwtDialNeedle::setPalette" ></a><p>
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<td class="md" nowrap valign="top"> void QwtDialNeedle::setPalette </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const QPalette & </td>
<td class="mdname1" valign="top" nowrap> <em>palette</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
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</td>
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<p>
Sets the palette for the needle.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign=top><em>palette</em> </td><td>New Palette </td></tr>
</table>
</dl>
Definition at line <a class="el" href="qwt__dial__needle_8cpp-source.html#l00033">33</a> of file <a class="el" href="qwt__dial__needle_8cpp-source.html">qwt_dial_needle.cpp</a>.
<p>
Referenced by <a class="el" href="qwt__dial__needle_8cpp-source.html#l00268">QwtCompassMagnetNeedle::QwtCompassMagnetNeedle()</a>, <a class="el" href="qwt__dial__needle_8cpp-source.html#l00437">QwtCompassWindArrow::QwtCompassWindArrow()</a>, and <a class="el" href="qwt__dial__needle_8cpp-source.html#l00101">QwtDialSimpleNeedle::QwtDialSimpleNeedle()</a>. </td>
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