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<h1>QwtAbstractScale Class Reference</h1> </div>
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<!-- doxytag: class="QwtAbstractScale" -->
<p>An abstract base class for classes containing a scale.
<a href="#_details">More...</a></p>
<p><code>#include <<a class="el" href="qwt__abstract__scale_8h_source.html">qwt_abstract_scale.h</a>></code></p>
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Inheritance diagram for QwtAbstractScale:</div>
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<div class="center"><img src="class_qwt_abstract_scale__inherit__graph.png" border="0" usemap="#_qwt_abstract_scale_inherit__map" alt="Inheritance graph"/></div>
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<area shape="rect" id="node3" href="class_qwt_knob.html" title="The Knob Widget." alt="" coords="5,83,80,112"/><area shape="rect" id="node5" href="class_qwt_slider.html" title="The Slider Widget." alt="" coords="104,83,181,112"/><area shape="rect" id="node7" href="class_qwt_thermo.html" title="The Thermometer Widget." alt="" coords="205,83,293,112"/></map>
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<p><a href="class_qwt_abstract_scale-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">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a01f1f43502a8ba14988a0bd3142d94b1">autoScale</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#aa12aff84cebf3ace4f1b5e61737e0051">QwtAbstractScale</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="class_qwt_scale_engine.html">QwtScaleEngine</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a5b8084cc735933ce9338fd2df1126f0e">scaleEngine</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_qwt_scale_engine.html">QwtScaleEngine</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#aea3b9d4912f1c28671f232e4100936d7">scaleEngine</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a68f120e12e373796b5d74199a9b8a4b0">scaleMap</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a4cfbcd9880297b1ca28fa824e3f4c3e6">scaleMaxMajor</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a5b23fafbb56bb43fd241c1839256357f">scaleMaxMinor</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#ade952bd5cbde1dba015bc16b880e3a28">setAutoScale</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a1e85d35fda2e18bad16e8aa43dbe99b4">setScale</a> (const <a class="el" href="class_qwt_interval.html">QwtInterval</a> &, double step=0.0)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#ad002e1a352ecf85c1a8595a138d42db7">setScale</a> (const <a class="el" href="class_qwt_scale_div.html">QwtScaleDiv</a> &)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a91af529248b556ef130add4bcfc60bb2">setScale</a> (double vmin, double vmax, double step=0.0)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#aa00f44140af3f2b7595cb6e23371198f">setScaleEngine</a> (<a class="el" href="class_qwt_scale_engine.html">QwtScaleEngine</a> *)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a40fdb4572ad8fdec8b93766ff5f8eda8">setScaleMaxMajor</a> (int ticks)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a6520bb1e52571f865b21b3710786a4db">setScaleMaxMinor</a> (int ticks)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a73890593efff11427ea7a42a3ebadefd">~QwtAbstractScale</a> ()</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">const <a class="el" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#ab3c5f30892792e5ca3d84f4409ef6216">abstractScaleDraw</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#aa61afdff037ef745a6dad686537cdb96">abstractScaleDraw</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#abd7c6b312b41882a3b509aadc9ada46e">rescale</a> (double vmin, double vmax, double step=0.0)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a0dbb7bdc557c0a7b163643e41970ed6a">scaleChange</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale.html#a950c5bf521dc704b78f76c7951346288">setAbstractScaleDraw</a> (<a class="el" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a> *)</td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>An abstract base class for classes containing a scale. </p>
<p><a class="el" href="class_qwt_abstract_scale.html" title="An abstract base class for classes containing a scale.">QwtAbstractScale</a> is used to provide classes with a <a class="el" href="class_qwt_scale_draw.html" title="A class for drawing scales.">QwtScaleDraw</a>, and a <a class="el" href="class_qwt_scale_div.html" title="A class representing a scale division.">QwtScaleDiv</a>. The <a class="el" href="class_qwt_scale_div.html" title="A class representing a scale division.">QwtScaleDiv</a> might be set explicitely or calculated by a <a class="el" href="class_qwt_scale_engine.html" title="Base class for scale engines.">QwtScaleEngine</a>. </p>
</div><hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="aa12aff84cebf3ace4f1b5e61737e0051"></a><!-- doxytag: member="QwtAbstractScale::QwtAbstractScale" ref="aa12aff84cebf3ace4f1b5e61737e0051" args="()" -->
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<td class="memname">QwtAbstractScale::QwtAbstractScale </td>
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<p>Constructor</p>
<p>Creates a default <a class="el" href="class_qwt_scale_draw.html" title="A class for drawing scales.">QwtScaleDraw</a> and a <a class="el" href="class_qwt_linear_scale_engine.html" title="A scale engine for linear scales.">QwtLinearScaleEngine</a>. Autoscaling is enabled, and the stepSize is initialized by 0.0. </p>
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<a class="anchor" id="a73890593efff11427ea7a42a3ebadefd"></a><!-- doxytag: member="QwtAbstractScale::~QwtAbstractScale" ref="a73890593efff11427ea7a42a3ebadefd" args="()" -->
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<td class="memname">QwtAbstractScale::~QwtAbstractScale </td>
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<td><code> [virtual]</code></td>
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<p>Destructor. </p>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="ab3c5f30892792e5ca3d84f4409ef6216"></a><!-- doxytag: member="QwtAbstractScale::abstractScaleDraw" ref="ab3c5f30892792e5ca3d84f4409ef6216" args="() const " -->
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<td class="memname">const <a class="el" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a> * QwtAbstractScale::abstractScaleDraw </td>
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<dl class="return"><dt><b>Returns:</b></dt><dd>Scale draw </dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_scale.html#a950c5bf521dc704b78f76c7951346288" title="Set a scale draw.">setAbstractScaleDraw()</a> </dd></dl>
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<a class="anchor" id="aa61afdff037ef745a6dad686537cdb96"></a><!-- doxytag: member="QwtAbstractScale::abstractScaleDraw" ref="aa61afdff037ef745a6dad686537cdb96" args="()" -->
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<td class="memname"><a class="el" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a> * QwtAbstractScale::abstractScaleDraw </td>
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<dl class="return"><dt><b>Returns:</b></dt><dd>Scale draw </dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_scale.html#a950c5bf521dc704b78f76c7951346288" title="Set a scale draw.">setAbstractScaleDraw()</a> </dd></dl>
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<a class="anchor" id="a01f1f43502a8ba14988a0bd3142d94b1"></a><!-- doxytag: member="QwtAbstractScale::autoScale" ref="a01f1f43502a8ba14988a0bd3142d94b1" args="() const " -->
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<td class="memname">bool QwtAbstractScale::autoScale </td>
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<td> const</td>
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<dl class="return"><dt><b>Returns:</b></dt><dd><code>true</code> if autoscaling is enabled </dd></dl>
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<a class="anchor" id="abd7c6b312b41882a3b509aadc9ada46e"></a><!-- doxytag: member="QwtAbstractScale::rescale" ref="abd7c6b312b41882a3b509aadc9ada46e" args="(double vmin, double vmax, double step=0.0)" -->
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<td class="memname">void QwtAbstractScale::rescale </td>
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<td class="paramtype">double </td>
<td class="paramname"><em>vmin</em>, </td>
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<td class="paramtype">double </td>
<td class="paramname"><em>vmax</em>, </td>
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<td class="paramtype">double </td>
<td class="paramname"><em>stepSize</em> = <code>0.0</code> </td>
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<td></td><td><code> [protected]</code></td>
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<p>Recalculate the scale division and update the scale draw.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">vmin</td><td>Lower limit of the scale interval </td></tr>
<tr><td class="paramname">vmax</td><td>Upper limit of the scale interval </td></tr>
<tr><td class="paramname">stepSize</td><td>Major step size</td></tr>
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</dd>
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<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_scale.html#a0dbb7bdc557c0a7b163643e41970ed6a" title="Notify changed scale.">scaleChange()</a> </dd></dl>
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<a class="anchor" id="a0dbb7bdc557c0a7b163643e41970ed6a"></a><!-- doxytag: member="QwtAbstractScale::scaleChange" ref="a0dbb7bdc557c0a7b163643e41970ed6a" args="()" -->
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<td class="memname">void QwtAbstractScale::scaleChange </td>
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<p>Notify changed scale. </p>
<p>Dummy empty implementation, intended to be overloaded by derived classes </p>
<p>Reimplemented in <a class="el" href="class_qwt_slider.html#a31ae4c53eb17d77ee0fd846ff6eea7e3">QwtSlider</a>, and <a class="el" href="class_qwt_thermo.html#a3f2f5077580235a5a776805a9721c8ba">QwtThermo</a>.</p>
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<a class="anchor" id="a5b8084cc735933ce9338fd2df1126f0e"></a><!-- doxytag: member="QwtAbstractScale::scaleEngine" ref="a5b8084cc735933ce9338fd2df1126f0e" args="() const " -->
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<td class="memname">const <a class="el" href="class_qwt_scale_engine.html">QwtScaleEngine</a> * QwtAbstractScale::scaleEngine </td>
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<dl class="return"><dt><b>Returns:</b></dt><dd>Scale engine </dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_scale.html#aa00f44140af3f2b7595cb6e23371198f" title="Set a scale engine.">setScaleEngine()</a> </dd></dl>
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<a class="anchor" id="aea3b9d4912f1c28671f232e4100936d7"></a><!-- doxytag: member="QwtAbstractScale::scaleEngine" ref="aea3b9d4912f1c28671f232e4100936d7" args="()" -->
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<td class="memname"><a class="el" href="class_qwt_scale_engine.html">QwtScaleEngine</a> * QwtAbstractScale::scaleEngine </td>
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<dl class="return"><dt><b>Returns:</b></dt><dd>Scale engine </dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_scale.html#aa00f44140af3f2b7595cb6e23371198f" title="Set a scale engine.">setScaleEngine()</a> </dd></dl>
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<a class="anchor" id="a68f120e12e373796b5d74199a9b8a4b0"></a><!-- doxytag: member="QwtAbstractScale::scaleMap" ref="a68f120e12e373796b5d74199a9b8a4b0" args="() const " -->
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<td class="memname">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & QwtAbstractScale::scaleMap </td>
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<dl class="return"><dt><b>Returns:</b></dt><dd><a class="el" href="class_qwt_abstract_scale.html#aa61afdff037ef745a6dad686537cdb96">abstractScaleDraw()</a>-><a class="el" href="class_qwt_abstract_scale.html#a68f120e12e373796b5d74199a9b8a4b0">scaleMap()</a> </dd></dl>
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<a class="anchor" id="a4cfbcd9880297b1ca28fa824e3f4c3e6"></a><!-- doxytag: member="QwtAbstractScale::scaleMaxMajor" ref="a4cfbcd9880297b1ca28fa824e3f4c3e6" args="() const " -->
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<td class="memname">int QwtAbstractScale::scaleMaxMajor </td>
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<dl class="return"><dt><b>Returns:</b></dt><dd>Max. number of major tick intervals The default value is 5. </dd></dl>
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<a class="anchor" id="a5b23fafbb56bb43fd241c1839256357f"></a><!-- doxytag: member="QwtAbstractScale::scaleMaxMinor" ref="a5b23fafbb56bb43fd241c1839256357f" args="() const " -->
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<td class="memname">int QwtAbstractScale::scaleMaxMinor </td>
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<dl class="return"><dt><b>Returns:</b></dt><dd>Max. number of minor tick intervals The default value is 3. </dd></dl>
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<a class="anchor" id="a950c5bf521dc704b78f76c7951346288"></a><!-- doxytag: member="QwtAbstractScale::setAbstractScaleDraw" ref="a950c5bf521dc704b78f76c7951346288" args="(QwtAbstractScaleDraw *)" -->
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<td class="memname">void QwtAbstractScale::setAbstractScaleDraw </td>
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<td class="paramtype"><a class="el" href="class_qwt_abstract_scale_draw.html">QwtAbstractScaleDraw</a> * </td>
<td class="paramname"><em>scaleDraw</em></td><td>)</td>
<td><code> [protected]</code></td>
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<p>Set a scale draw. </p>
<p>scaleDraw has to be created with new and will be deleted in ~QwtAbstractScale or the next call of setAbstractScaleDraw. </p>
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<a class="anchor" id="ade952bd5cbde1dba015bc16b880e3a28"></a><!-- doxytag: member="QwtAbstractScale::setAutoScale" ref="ade952bd5cbde1dba015bc16b880e3a28" args="()" -->
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<td class="memname">void QwtAbstractScale::setAutoScale </td>
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<p>Advise the widget to control the scale range internally. </p>
<p>Autoscaling is on by default. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_scale.html#a91af529248b556ef130add4bcfc60bb2" title="Specify a scale.">setScale()</a>, <a class="el" href="class_qwt_abstract_scale.html#a01f1f43502a8ba14988a0bd3142d94b1">autoScale()</a> </dd></dl>
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<a class="anchor" id="a91af529248b556ef130add4bcfc60bb2"></a><!-- doxytag: member="QwtAbstractScale::setScale" ref="a91af529248b556ef130add4bcfc60bb2" args="(double vmin, double vmax, double step=0.0)" -->
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<td class="memname">void QwtAbstractScale::setScale </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"><em>vmin</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">double </td>
<td class="paramname"><em>vmax</em>, </td>
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<td class="paramtype">double </td>
<td class="paramname"><em>stepSize</em> = <code>0.0</code> </td>
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<td>)</td>
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<p>Specify a scale. </p>
<p>Disable autoscaling and define a scale by an interval and a step size</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">vmin</td><td>lower limit of the scale interval </td></tr>
<tr><td class="paramname">vmax</td><td>upper limit of the scale interval </td></tr>
<tr><td class="paramname">stepSize</td><td>major step size </td></tr>
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</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_scale.html#ade952bd5cbde1dba015bc16b880e3a28" title="Advise the widget to control the scale range internally.">setAutoScale()</a> </dd></dl>
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<a class="anchor" id="ad002e1a352ecf85c1a8595a138d42db7"></a><!-- doxytag: member="QwtAbstractScale::setScale" ref="ad002e1a352ecf85c1a8595a138d42db7" args="(const QwtScaleDiv &)" -->
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<td class="memname">void QwtAbstractScale::setScale </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="class_qwt_scale_div.html">QwtScaleDiv</a> & </td>
<td class="paramname"><em>scaleDiv</em></td><td>)</td>
<td></td>
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<div class="memdoc">
<p>Specify a scale. </p>
<p>Disable autoscaling and define a scale by a scale division</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">scaleDiv</td><td>Scale division </td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_scale.html#ade952bd5cbde1dba015bc16b880e3a28" title="Advise the widget to control the scale range internally.">setAutoScale()</a> </dd></dl>
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<a class="anchor" id="a1e85d35fda2e18bad16e8aa43dbe99b4"></a><!-- doxytag: member="QwtAbstractScale::setScale" ref="a1e85d35fda2e18bad16e8aa43dbe99b4" args="(const QwtInterval &, double step=0.0)" -->
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<td class="memname">void QwtAbstractScale::setScale </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="class_qwt_interval.html">QwtInterval</a> & </td>
<td class="paramname"><em>interval</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">double </td>
<td class="paramname"><em>stepSize</em> = <code>0.0</code> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Specify a scale. </p>
<p>Disable autoscaling and define a scale by an interval and a step size</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">interval</td><td>Interval </td></tr>
<tr><td class="paramname">stepSize</td><td>major step size </td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_scale.html#ade952bd5cbde1dba015bc16b880e3a28" title="Advise the widget to control the scale range internally.">setAutoScale()</a> </dd></dl>
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<a class="anchor" id="aa00f44140af3f2b7595cb6e23371198f"></a><!-- doxytag: member="QwtAbstractScale::setScaleEngine" ref="aa00f44140af3f2b7595cb6e23371198f" args="(QwtScaleEngine *)" -->
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<td class="memname">void QwtAbstractScale::setScaleEngine </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_qwt_scale_engine.html">QwtScaleEngine</a> * </td>
<td class="paramname"><em>scaleEngine</em></td><td>)</td>
<td></td>
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</table>
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<p>Set a scale engine. </p>
<p>The scale engine is responsible for calculating the scale division, and in case of auto scaling how to align the scale.</p>
<p>scaleEngine has to be created with new and will be deleted in ~QwtAbstractScale or the next call of setScaleEngine. </p>
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<a class="anchor" id="a40fdb4572ad8fdec8b93766ff5f8eda8"></a><!-- doxytag: member="QwtAbstractScale::setScaleMaxMajor" ref="a40fdb4572ad8fdec8b93766ff5f8eda8" args="(int ticks)" -->
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<td class="memname">void QwtAbstractScale::setScaleMaxMajor </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>ticks</em></td><td>)</td>
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<p>Set the maximum number of major tick intervals. </p>
<p>The scale's major ticks are calculated automatically such that the number of major intervals does not exceed ticks. The default value is 5. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">ticks</td><td>maximal number of major ticks. </td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html" title="A abstract base class for drawing scales.">QwtAbstractScaleDraw</a> </dd></dl>
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<a class="anchor" id="a6520bb1e52571f865b21b3710786a4db"></a><!-- doxytag: member="QwtAbstractScale::setScaleMaxMinor" ref="a6520bb1e52571f865b21b3710786a4db" args="(int ticks)" -->
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<td class="memname">void QwtAbstractScale::setScaleMaxMinor </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>ticks</em></td><td>)</td>
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<p>Set the maximum number of minor tick intervals. </p>
<p>The scale's minor ticks are calculated automatically such that the number of minor intervals does not exceed ticks. The default value is 3. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">ticks</td><td></td></tr>
</table>
</dd>
</dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html" title="A abstract base class for drawing scales.">QwtAbstractScaleDraw</a> </dd></dl>
</div>
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